Description:FIELD OF THE INVENTION
[0001] The present invention relates to the domain of electric machines, more specifically, the present invention is related to a spider and stator of a motor.

BACKGROUND OF THE INVENTION
[0002] An electrical machine generally includes motors and generators. Typically, the electrical machine includes electrical members, such as a rotating part known as rotor and a stationary part known as stator. As is well known, such electrical machines operate on the principle of electromagnetism. During operation of the electrical machine as a motor, a magnetic field provided in the stator interacts with a magnetic field provided in the rotor. The interaction of the magnetic fields causes generation of an electromagnetic force, which further causes rotation of the rotor. On the other hand, during the operation of the electrical machine as a generator, torque is supplied to the rotor to rotate the rotor with reference to the stator, and magnetic field is provided on one or both the electrical members. Upon relative motion between the rotor and the stator, the magnetic field, that is, magnetic flux linked with the other electrical member varies with time and an electro-motive force or a voltage is generated in the stator, which can be either directly fed to a load or can be stored for future use by the load.

[0003] Typically, to generate the magnetic field in the electrical member, either permanent magnets are fixed to the electrical member, or the electrical member is wound with a conductor coupled to a power source to form an electromagnetic coil.

[0004] A rotary electrical machine, in the domain of vehicle such as but not limited to a hub motor, a range extender of an electric vehicle, or an electric motor, comprises a housing which supports a stator, a shaft which is integral with a rotor fitted inside the stator.

[0005] Generally, the stator, rotor and shaft are made up of same solid material such as steel or iron core or the like which are heavy and increases overall weight of the motor. Further, the rotor comprises silicon steel blocks and magnetic steel which are arranged in a circular mode, and the magnetic steel is clamped between every two adjacent silicon steel blocks, so that a complete rotor is formed. Furthermore, the silicon steel block, the magnetic steel, the silicon steel block and the inner edge of the hub body are bonded by glue. The requirement of adhesive bonding is high, the requirement on the production and processing environment of the hub motor is high, the adhesive is not firm, and the rotor is easy to fall off from the hub body. Also, in the said configuration there is always a chance of slippage between stator and rotor while torque transmission.

[0006] Generally, the hub motor of a vehicle consists of stator and rotor. Stator is a stationary part mounted on wheel axle and rotor is rotating part on which wheel rim is mounted. The stator consists of a spider which is fixed on shaft and on spider stator sheet stack is mounted and copper is winded on the steel stack on which flux is generated. In case of automobiles, the shaft is mounted on a swing arm of the vehicle. Magnets are pasted on the inner surface of the rotor and rotor is welded to the wheel rim. Further, in the conventional design a single sheet is wounded into 360 degrees (n number of turns) to make the stator and stator sheets are stacked together by means of riveting or welding and then they are placed on spider with interference fit. However, if there is a welding between sheets, then before assembling them on spider the welding projections are machined and removed. Accordingly, the load acting on the stack during interference fit is high and single sheet will plastically deform for such high loads. Hence stator sheets should be stacked together before press fit as required for the essential operation of the motor.

[0007] In a motor torque transmission is achieved through the interference fit between spider and stator. Further, tangential forces will be acting on stator teeth at torque transmission which might result in stator slipping from spider. Further, during high Revolutions Per Minute (RPM’s) there is a high chance that the stator might slip laterally. Accordingly, high interference fit is required to ensure that the stator and spider act as one part in case of torque transmission. However, the challenge is due to high interference fit the stator and sheets are plastically deformed while pressing which results in relative motion between the spider and stator while torque transmission. This slip will distort hall sensor signal. This distortion will cause error in hall signal and controller will stop supplying power to motor resulting in motor stoppage.

[0008] In light of the aforesaid problem available in the art there is a need to arrest relative motion between stator and spider during torque transmission to ensure smooth running of the vehicle. Further, there is also a need to produce a motor which is light in weight in comparison to the convention motor available in the art.

[0009] The above information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

SUMMARY OF THE INVENTION
[00010] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

[00011] In one of the embodiments of the present application, a spider of a motor comprising a hollow cylinder having an inner wall facing towards centre of the hollow cylinder and an outer wall facing opposite to the inner wall. The hollow cylinder further comprising at least one protrusion on the inner wall of the hollow cylinder. The at least one protrusion being facing towards centre of the hollow cylinder and a hollow opening at the centre of the hollow cylinder. Further, the spider also comprises a perforated circular disc being moulded between the inner wall of the hollow cylinder. The perforated moulded circular disc is moulded at a predetermined height inside the hollow cylinder.

[00012] In one of the embodiments of the present application, the centre of the hollow cylinder of the spider comprising a hollow opening.

[00013] In one of the embodiments of the present application, the hollow opening of the spider is configured to accommodate at least one shaft. Further, the hollow opening is disposed at a centre of the perforated circular disc.

[00014] In one of the embodiments of the present application, the at least one protrusion in the spider is placed uniformly along the inner wall of the hollow cylinder.

[00015] In one of the embodiments of the present application, a stator of the motor comprising plurality of stator sheets which are assembled on top of each other within a spider. Further, each stator sheet of the plurality of stator sheets comprising an inner circumference which is facing centre of corresponding stator sheet of the plurality of stator sheets, an outer circumference which is facing opposite to the inner circumference and at least one hollow hump which is disposed on the inner circumference of the corresponding stator sheet of the plurality of stator sheets. Furthermore, the plurality of stator sheets is coaxially aligned over one another such that the at least one hollow hump of plurality of stator sheets coaxially aligns with each other to form at least one hollow rail. The at least one hollow rail is configured to receive at least one fastener to detachably attach the plurality of stator sheets to form an interlock.

[00016] In one of the embodiments of the present application, the at least one hollow rail is placed uniformly along the inner circumference.

[00017] In one of the embodiments of the present application, the stator further comprising an inner circumference and an outer circumference. Further, the outer circumference (210) comprising copper winding, magnet, an air gap (206) and plurality of teeth.

[00018] In one of the embodiments of the present application, the air gap is of 0.25mm to 0.75mm.

[00019] In one of the embodiments of the present application, a motor comprising a spider and a stator. The spider further comprising a hollow cylinder which is having an inner wall which is facing centre of the hollow cylinder and an outer wall which is facing opposite to the inner wall. The inner wall also comprising at least one protrusion which is facing centre of the hollow cylinder and a perforated circular disc which is moulded between the inner wall of the hollow cylinder. The stator comprising plurality of stator sheets which are assembled on top of each other within the spider. Further, each stator sheet of the plurality of stator sheets comprising an inner circumference which is facing centre of corresponding stator sheet of the plurality of stator sheets, an outer circumference which is facing opposite to the inner circumference, and at least one hollow hump which is disposed on the inner circumference of the corresponding stator sheet of the plurality of stator sheets. Furthermore, the plurality of stator sheets is coaxially aligned over one another such that the at least one hollow hump of plurality of stator sheets coaxially aligns with each other to form at least one hollow rail. The at least one hollow rail is configured to receive at least one fastener to detachably attach the plurality of stator sheets to form an interlock.

[00020] In one of the embodiments of the present application, the perforated moulded circular disc is moulded at a predetermined height inside the hollow cylinder.

[00021] In one of the embodiments of the present application, the inner circumference of the stator in the motor comprising the at least one hollow rail corresponding to the at least one hollow hump of the inner wall of the spider. Further, the at least one hollow rail is corresponding to the at least one protrusion of the spider to couple the spider with the stator. Furthermore, the interlock is used to connect the plurality of stator sheets on the outer circumference of the stator.

[00022] In one of the embodiments of the present application, the spider is made of a first material and the stator is made of a second material. Further, the second material is having a higher thermal expansion then the first material.

[00023] In one of the embodiments of the present application, the spider comprising a hollow opening at the centre of the hollow cylinder. Further, the hollow opening is disposed at a centre of the perforated circular disc. Furthermore, the hollow opening is configured to accommodate at least one shaft. Moreover, the at least one shaft is assembled with the spider.

[00024] In one of the embodiments of the present application, the at least one shaft is assembled with the spider and mounted on a swing arm of a vehicle.

[00025] In one of the embodiments of the present application, the hollow opening is parallel to the at least one protrusion which is placed on the inner wall of the spider.

[00026] In one of the embodiments of the present application, the spider further comprises a circular cover plate which is comprises at least one opening for the at least one fastener to lock the plurality of stator sheets placed over the spider. Further, the at least one opening is placed parallelly to the at least one protrusion. Furthermore, the circular cover plate is placed over outermost stator sheet of the plurality of stator sheets.

[00027] In one of the embodiments of the present application, the stator further comprising at least one hall sensor. Further, the at least one hall sensor is placed on the outer circumference.

[00028] In one of the embodiments of the present application, the at least one protrusion is placed uniformly along the inner wall of the hollow cylinder.

[00029] In one of the embodiments of the present application, the at least one hollow rail is placed uniformly along the inner circumference of each stator sheet of the plurality of stator sheets.

[00030] In one of the embodiments of the present application, a vehicle comprising at least one motor. Further, the vehicle can be a two-wheeler, three-wheeler, four-wheeler of the like. Furthermore, the vehicle is a hybrid electric vehicle (HEV), an electric vehicle (EV), Internal Combustion (IC) engine-driven vehicle, or the like.

[00031] According to one of the embodiments, it is an object of the present invention to provide a motor, which is compact, efficient and light in weight. Further, one of the objects of the present invention is to provide effective torque transmission without jerks in a motor. Furthermore, one of the objects of the present application is to produce a light weight and easily manufactured motor which can be easily used in the vehicle and is economical in comparison to the motors available in the art.

BRIEF DESCRIPTION OF FIGURES:
[00032] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate preferred embodiments of the invention, and together with the general description given above and the detailed description given below, serve to explain features of the invention.

[00033] Figure 1 illustrates a spider as per one of the embodiments of the present invention.

[00034] Figure 2 illustrates a stator as per one of the embodiments of the present invention.

[00035] Figure 3 illustrates an arrangement of a spider and a stator as per one of the embodiments of the present invention.

[00036] Figure 4 illustrates each stator sheet of the plurality of stator sheets as per one of the embodiments of the present invention.

[00037] Figure 5 illustrates a motor along with a shaft as per one of the embodiments of the present invention.

DETAILED DESCRIPTION
[00038] Exemplary embodiments detailing features of a motor in accordance with the present subject matter will be described hereunder with reference to the accompanying drawings. Various aspects of different embodiments of the present invention will become discernible from the following description set out hereunder. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the present subject matter. Further, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. Additionally, all numerical terms, such as, but not limited to, “first”, “second”, “third”, “primary”, “secondary”, “main” or any other ordinary and/or numerical terms, should also be taken only as identifiers, to assist the reader's understanding of the various elements, embodiments, variations and/or modifications of the present disclosure, and may not create any limitations, particularly as to the order, or preference, of any element, embodiment, variation and/or modification relative to, or over, another element, embodiment, variation and/or modification.

[00039] The following detailed description refers to the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the following description to refer to the same or similar elements. While embodiments may be described, modifications, adaptations, and other implementations are possible. For example, substitutions, additions, or modifications may be made to the elements illustrated in the drawings, and the methods described herein may be modified by substituting, reordering, or adding stages to the disclosed methods. Accordingly, the following detailed description does not limit the claimed subject matter. Instead, the proper scope of the claimed subject matter is defined by the appended claims. It should be noted that the description and figures merely illustrate principles of the present subject matter. Various arrangements may be devised that, although not explicitly described or shown herein, encompass the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and examples of the present subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof.

[00040] Further, various embodiments disclosed herein are to be taken in the illustrative and explanatory sense and should in no way be construed as limiting of the present disclosure. All joinder references (e.g., attached, affixed, coupled, disposed, etc.) are only used to aid the reader's understanding of the present disclosure, and may not create limitations, particularly as to the position, orientation, or use of the systems and/or methods disclosed herein. Therefore, joinder references, if any, are to be construed broadly. Moreover, such joinder references do not necessarily infer those two elements are directly connected to each other.

[00041] It will also be appreciated that one or more of the elements depicted in the drawings/figures can also be implemented in a more separated or integrated manner, or even removed or rendered as inoperable in certain cases, as is useful in accordance with a particular application. Additionally, any signal hatches in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise specifically specified.

[00042] With the initiation of electric vehicles and electric vehicles, there is a growing interest in an automotive industry to develop electrical machines which are light in weight, utilize less space and are efficient in operation. Therefore, the direction of innovation in designing electrical machines is to develop electrical machines which have low losses, lighter in weight and compact size for a given power rating, or for a given size, power rating should be more than the present rating. However, in general, close packaging of components in compact machines leads to greater electrical and magnetic interactions between the components and may lead to high core losses in case of electrical machines using permanent magnets.

[00043] The present invention is about creating an interlock between a stator and a spider which will prevent relative motion between two parts during high torque transmission.

[00044] With reference to figure 1, in which a spider (100) of a motor (500) is shown, the spider (100) comprising a hollow opening (106) at the centre for accommodating a shaft (502), as shown in figure 5. The spider (100) is in the form of a hollow cylinder (112) such that an inner wall (102) of the spider (100) is facing towards the hollow opening (106) of the spider (100) and an outer wall (104) is facing opposite to the inner wall (102). Further, the spider (100) also comprises a perforated circular disc (110) and at least one protrusion (108) facing towards the hollow opening (106) of the spider (100). The at least one protrusion (108) is disposed over the inner wall (102) of the spider (100). The perforated circular disc (110) is placed inside the hollow cylinder of the spider (100). The hollow opening (106) being disposed at the centre of the perforated circular disc (110). Furthermore, the spider (100) also comprises a circular cover plate (504), as shown in figure 5, which is comprises at least one opening to lock all the plurality of stator sheets (204) which are placed over the spider (100). The position of the hollow opening (106) on the circular cover plate (504) is in such a way that the same is in parallel to the at least one protrusion (108) placed over the inner wall (102) of the spider (100).

[00045] With reference to figure 2, in which a stator (200) of the motor (500) is shown which is comprising plurality of stator sheet (204). The plurality of stator sheets (204) is assembled on top of each other within the spider (100). The stator (200) takes a form of hollow tube. Each stator sheet of the plurality of stator sheets (204) as shown in figure 4 comprising an inner circumference (406) which is facing inside the hollow tube (or facing centre of the corresponding stator sheet (400) of the plurality of stator sheet (204)) and an outer circumference (408) which is facing outside the hollow tube (or facing opposite to the inner circumference (202) of the stator (200)).

[00046] The stator (200) also comprising an inner circumference (202) which is facing inside the hollow tube (or facing centre of the stator (400)) and an outer circumference (210) which is facing outside the hollow tube (or facing opposite to the inner circumference (202) of the stator (200)). The outer circumference (210) of the stator (200) comprises copper windings and magnet. Further, the outer circumference (210) of the stator (200) will have magnet with air gap (206) of 0.25mm to 0.75mm and plurality of teeth.

[00047] Each stator sheet (400) of the plurality of stator sheets (204) also comprising at least one hollow hump (404). The at least one hollow hump (404) is disposed on the inner circumference (406) of each stator sheet of the plurality of stator sheets (204). Further, the plurality of stator sheets (204) being coaxially stacked over one another to form the stator (200). Further, the plurality of stator sheets (204) is coaxially aligned over one another such that the at least one hollow hump (404) of plurality of stator sheets (204) coaxially aligns with each other to form at least one hollow rail (208). Furthermore, the at least one hollow rail (208) is configured to receive at least one fastener (302) to detachably attach the plurality of stator sheets (204) to form an interlock. The interlocks are provided to increase robustness / smoothness of torque transmission. The interlocks will also prevent tangential slippage between the stator (200) and a rotor while torque transmission. Accordingly, the spider (100) and the stator (200) can be of transition fit.

[00048] The stator (200) also comprises one or more hollow rail (208) on the inner circumference (202). The one or more hollow rail (208) may be equivalent to length of the inner circumference (202) of the hollow tube. In one of the embodiments, one or more hollow rail (208) may be of partial length of the inner circumference (202) of the hollow tube. Further, the stator (200) also comprises as outer surface (210), the outer surface (210) is placed opposite to the inner circumference (202).

[00049] In the stator (200), the one or more hollow rail (208) is placed uniformly over the inner circumference (202) such that it will couple with the at least one protrusion (108) placed over the inner wall (102) of the spider (100).

[00050] With reference to figure 3, in which an interlocking of the spider (100) and the stator (200) is shown. More specifically, figure 3 is reflecting how spider (100) as shown in figure 1 will interconnect with the stator (200) as shown in figure 2. Accordingly, at least one protrusion (108) placed over the inner wall (102) of the spider (100) will slide over the corresponding one or more hollow rail (208) placed over the inner circumference (202) of the stator (200) to form the interlocking connection.

[00051] In one of the embodiments of the present application, a circular cover plate (504) comprising at least one opening for the at least one fastener (302) to lock the plurality of stator sheets (204) is placed over the spider (100). Further, the circular cover plate (504) is placed over the outer most stator sheet of the of the plurality of stator sheets (204) such that the same is visible from the outer environment and will protect the plurality of stator sheets (204) from the external factors such as but not limited to water, dirt. Furthermore, the at least one opening is placed parallelly to the at least one protrusion (108). In this way, the locking mechanism will improve, and the chances of slippage will also decrease to the greater extent.

[00052] With reference to figure 4, in which one stator sheet (400) of the plurality of the stator sheets (204) is shown. Every stator sheet of the plurality of the stator sheets (204) is of same dimension, more specifically, every stator sheet of the plurality of the stator sheets (204) is of same size, radius, same material, same cut-outs or the like. The one stator sheet (400) of the plurality of stator sheets (204) is having an inner circumference (406) which is facing towards the centre of one stator sheet (400) of the plurality of stator sheets (204) and an outer circumference (408) which is facing opposite to the facing of the inner circumference (406). The stator sheet (400) also comprises one or more hall sensors (401, 402, 402) which are placed over the outer circumference (408) of the one stator sheet (400) of the plurality of stator sheets (204). Further, each stator sheet (400) is comprising at least one hump (404) kind of structure which is hollow from the inside. The at least one hollow hump (404) is placed on the periphery of the inner circumference (406) of each stator sheet of the plurality of stator sheets (204). The outer circumference (408) further, comprising copper winding, magnet, an air gap (206) and plurality of teeth. Furthermore, the air gap (206) is of 0.25mm to 0.75mm.

[00053] In one of the embodiments of the present application, the one or more hall sensors (401, 402, 402) are placed equidistantly over the outer circumference (210) of the stator (200).

[00054] The plurality of stator sheets (204) being coaxially stacked over one another to form the stator (200). Further, the at least one hollow hump (404) of the one stator sheet (400) of the plurality of stator sheets (204) being coaxially aligns with corresponding hollow hump (404) of the plurality of remaining stator sheets (204) to form at least one hollow rail (208). Furthermore, the at least one hollow rail (208) being configured to receive at least one fastener (302) to detachably attach plurality of stator sheets (204) to form the interlock of the motor (500). The at least one hollow rail (208) is placed uniformly along the inner circumference (406).

[00055] The at least one hollow hump (404) are also placed over one another coaxially to form the at least one hollow rail (208) of the stator (200) when seen from the top or bottom of the stator (200). The hollow opening of the at least one hollow rail (208) is fastened using mechanism such as rivet or the like to form the interlock. Accordingly, the plurality of stator sheets (204) in the stator (200) will remain in an order and will not move. Therefore, the interlocks will prevent tangential slippage between the stator (200) and rotor while torque transmission. The rivet is made up of material like soft steel or the like.

[00056] With reference to figure 5, in which the coupling of the spider (100) with the stator (200) is shown in a motor (500) along with the shaft (502) which is passing through the hollow opening (106) of the spider (100). Accordingly, when the at least one hollow rail (208) is connected to the corresponding at least one protrusion (108) of the spider (100), the spider (100) will couple to the stator (200) to form one single unit.

[00057] In one of the embodiments, the spider (100) and the stator (200) are made up of two different materials.. Further, the materials are chosen in such a way that the material which is chosen for the stator (200) (such as steel or the like) will always have a higher thermal expansion point in comparison to the material which is chosen for the spider (100) (such as aluminium or the like). The thermal expansion is the tendency of the material to change its shape, area, volume, and density in response to a change in temperature. Accordingly, when torque is higher, the stator (200) will carry higher current which will produce higher temperature so both the stator (200) and the spider (100) will expand at different rate. More specifically, the element made up of material with the higher thermal expansion point will expend less in comparison to the element made up of material with the less thermal expansion point. In the present invention the spider (100) will expand more in comparison to the stator (200). Therefore, in the present invention locking will improve with the increase in temperature which is not possible if both the interfacing materials of the stator (200) and the spider (100) is made up of same material. Therefore, slippage chances during higher torque will also reduce.

[00058] In one of the embodiments, the material which is used for the formation of the spider (100) is aluminium or the like which will further reduce the overall weight of the motor (500). This will also reduce the overall weight of the vehicle, if the motor (500) is used in that vehicle. Accordingly, range of the vehicle will increase. Further, the motor (500) of the present invention are easy to manufacture in comparison to the motors available in the art.

[00059] Generally, the motor covers are generally made up using a casting process, since we are making the spider (100) using light material such as but not limited to aluminium, we can manufacture the spider (100) as disclosed in the present application using same casting process. Accordingly, there is no need to go through a sheet process only which will further reduce the cost, time and expedite the process to manufacture the spider (100).

[00060] The stator (200) is provided with at least one hollow rail (208) and corresponding at least one protrusion (108) is provided on the spider (100) for coupling the spider (100) with each stator sheet of the plurality of stator sheets (204), same is shown in the motor (500) of figure 5. The interaction of the at least one hollow rail (208) and the at least one protrusion (108) is called as a coupling point. Further, the number of coupling points is provided to increase robustness / smoothness of torque transmission. These coupling points will prevent tangential slippage between the stator (200) and rotor while torque transmission. Hence the spider (100) and the stator (200) can be of transition fit.

[00061] To arrest lateral movement of the stator (200), at least one protrusion (108) facing towards the hollow opening (106) at the centre of the spider (100) is provided for 3600 in such a way during assembly, at least one hollow rail (208) of the stator (200) rests on at least one protrusion (108) of the spider (100). The same will also stop the lateral movement in the opposite direction. Since the at least one protrusion (108) is placed over the inner wall (102) of the spider (100), the same will slide over the corresponding one or more hollow rail (208) placed over the inner circumference (202) of the stator (200) to form the interlocking connection. This configuration will help in stacking the plurality of stator sheets (204) together, hence “n” number of individual stator sheet (400) can be stacked together to form the stator (200). This enables ease of scalability of the stator (200) for higher torque transmission. Further, raw material handling of individual stator sheet (400) is much simple than handling a single sheet which will be wounded into “n” number of turns. Since plurality of stator sheets (204) are fastened together there is no need for welding and machining of hence those operations can be eliminated.

[00062] In the aforesaid configuration, the torque transmission is through the interlocks. Since interlocks are provided on the stator (200) and the spider (100), this configuration will prevent the stator (200) to slip during tangential torque transmission and will provide effective torque transmission without any jerks.

[00063] In one of the embodiments of the present application, a motor (500) comprising: a spider (100) and a rotor (200). The spider (100) further comprising a hollow cylinder (112) comprising an inner wall (102) which is facing towards centre of the hollow cylinder (112) and an outer wall (104) which is facing opposite to the inner wall (102). The inner wall (102) also comprising at least one protrusion (108) which is disposed on the inner wall (102) and is facing towards centre of the hollow cylinder (112) and a perforated circular disc (110) which is moulded between the inner wall (102) of the hollow cylinder (112). The stator (200) further comprising plurality of stator sheets (204) which are assembled on top of each other within the spider (100). Further, each stator sheet (400) of the plurality of stator sheets (204) comprising an inner circumference (406) which is facing centre of corresponding stator sheet (400) of the plurality of stator sheets (204), an outer circumference (408) which is facing opposite to the inner circumference (406) and at least one hollow hump (404) which is disposed on the inner circumference (406) of the corresponding stator sheet (400) of the plurality of stator sheets (204). Furthermore, the plurality of stator sheets (204) is coaxially aligned over one another in such a way that the at least one hollow hump (404) of plurality of stator sheets (204) coaxially aligns with each other to form at least one hollow rail (208). The at least one hollow rail (208) is configured to receive at least one fastener (302) to detachably attach plurality of stator sheets (204) to form the interlock.

[00064] In one of the embodiments of the present application, the motor (500) consists of the stator (200) which gets its alternating flux by alternating current carried by winding and rotor which is mounted with magnets, and it gets its alternating flux as by its rotation. The stator (200) consists of the shaft (502) and the spider (100). The stator (200) and the shaft are assembled over the spider (100).

[00065] In one of the embodiments of the present application, the assembled stator (200) and the shaft (502) is assembled with the spider (100) and mounted on a swing arm (not shown in the figures) of a vehicle. The stator (200) is wounded by copper wire and one or more hall sensors (401, 402, 402) which are placed on the stator (200) which gives position of magnets on the rotor to a controller to generate alternating current to be pumped in winding. In case of the automobiles, the controllers can be Engine Control Unit (ECU), Engine Control Module (ECM), Vehicle Control Unit (VCU), Automotive Microcontrollers (MCU), Transmission Control Module (TCM), Central Timing Module (CTM), General Electronic Module (GEM), or the like.

[00066] In one of the embodiments of the present application, the inner circumference (406) of the stator (200) comprising the at least one hollow rail (208) corresponding to the at least one hollow hump (404) of the inner wall (102) of the spider (100). Further, the at least one hollow rail (208) is corresponding to the at least one protrusion (108) of the spider (100) to couple the spider (100) with the stator (200). Furthermore, the interlock is used to connect the plurality of stator sheets (204) on the outer circumference (408) of the stator (200). The at least one hollow rail (208) is placed uniformly along the inner circumference (406) of the each stator sheet (400) of the plurality of stator sheets (204).

[00067] In one of the embodiments of the present application, in the motor (500) the hollow opening (106) is parallel to the at least one protrusion (108) is placed on the inner wall (102) of the spider (100).

[00068] In one of the embodiments of the present application, in the motor (500) the spider (100) further comprises a circular cover plate (504) which is comprising at least one opening for the at least one fastener (302) to lock the plurality of stator sheets (204) placed over the spider (100). Further, the circular cover plate (504) is placed over outermost stator sheet of the plurality of stator sheets (204). Furthermore, the at least one opening is placed parallelly to the at least one protrusion (108).

[00069] In one of the embodiments of the present application, the stator (200) of the motor (500) is mounted on the spider (100) with many interlocks on the spider (100) and as many interlocks on the stator (200). These interlocks act as arresting radius during high torque transmission from the rotor to the stator (200). Since the torque transmission is tangential, the tangential interlocks are provided on the spider (100) and the stator (200).

[00070] In one of the embodiments of the present application, the at least one protrusion (108) is placed uniformly along the inner wall (102) of the hollow cylinder (112).

[00071] In one of the embodiments of the present application, to arrest the lateral motion of the stator (200) in the motor (500), an opening (302) is provided on one side of the spider (100). Further, on the other side at least one fastener (302) is provided and is locked with the spider (100). Furthermore, the at least one protrusion (108) is facing towards the hollow opening (106) of the spider (100). Accordingly, the lateral movement between the spider (100) and the stator (200) is arrested.

[00072] In one of the embodiments of the present application, the motor (500) comprising at least one protrusion (108) is facing towards the hollow opening (106) of the spider (100) and the one or more hollow rail (208) are placed over the inner circumference (202) of the stator (200) to arrest the tangential relative motion. Further, the same prevent the lateral motion between the spider (100) and the stator (200) during high torque transmission from the rotor to the stator (200) which consists of the plurality of stator sheets (204), the spider (100) and the shaft (502). The stator (200) is locked with the spider (100) using interlocks. The spider (100) is locked with the shaft (502) using known means available in the art and the shaft (502) is mounted to the swing arm of the vehicle by a nut or the like (not shown in the figures). Furthermore, if any of the member is unable to take transmitted torque that will slip against the other member and it will create error in the one or more hall sensor (401, 402, 402) which is mounted on the stator sheet (400), the controller will detects such error in one or more hall sensor (401, 402, 402) it will stop power supply to the motor (500).

[00073] Accordingly, in the present invention, in the motor (500) torque transmission is through interlocks. The interlocks provided on the stator (200) and the spider (100) will prevent the stator (200) to slip during tangential torque transmission and this will give effective torque transmission without jerks. Further, the present invention is about creating interlock between the stator (200) and the spider (100) in the motor (500) which will prevent relative motion between two parts during high torque transmission. The motor (500) of the present application is easy to manufacture and is less costly in comparison to the motors available in the art. Furthermore, the motor (500) of the present invention can be used in any industry such as but not limited to automobiles, electrical machine, construction equipment’s.

[00074] In one of the embodiments of the present application, a vehicle comprising at least one motor (500). Further, the vehicle can be a two-wheeler, three-wheeler, four-wheeler of the like. Furthermore, the vehicle can be a hybrid electric vehicle (HEV), an electric vehicle (EV), Internal Combustion (IC) engine-driven vehicle, or the like.

[00075] In view of the above, the claimed steps as discussed above are not routine, conventional, or well understood in the art, as the claimed steps enable the following solutions to the existing problems in conventional technologies.

[00076] The above-described embodiments, and particularly any “preferred” embodiments, are possible examples of implementations and merely set forth for a clear understanding of the principles of the invention. It will be apparent to those skilled in the art that changes in form, connection, and detail may be made therein without departing from the spirit and scope of the invention.

[00077] Non-limiting and non-exhaustive embodiments of the invention are described with reference to the following figures, wherein like reference numerals refer to like parts throughout the various views unless otherwise specified. It should be appreciated that the following figures may not be drawn to scale.

[00078] Descriptions of certain details and implementations follow, including a description of the figures, which may depict some or all of the embodiments described below, as well as a discussion of other potential embodiments or implementations of the inventive concepts presented herein. An overview of embodiments of the invention is provided below, followed by a more detailed description with reference to the drawings.

[00079] The foregoing disclosure is not intended to limit the present disclosure to the precise forms or particular fields of use disclosed. As such, it is contemplated that various alternate embodiments and/or modifications to the present disclosure, whether explicitly described or implied herein, are possible in light of the disclosure. Having thus described embodiments of the present disclosure, a person of ordinary skill in the art will recognize that changes may be made in form and detail without departing from the scope of the present disclosure. Thus, the present disclosure is limited only by the claims.

In the foregoing specification, the disclosure has been described with reference to specific embodiments. However, as one skilled in the art will appreciate, various embodiments disclosed herein can be modified or otherwise implemented in various other ways without departing from the spirit and scope of the disclosure. Accordingly, this description is to be considered as illustrative and is for the purpose of teaching those skilled in the art the manner of making and using various embodiments of the disclosure. It is to be understood that the forms of disclosure herein shown and described are to be taken as representative embodiments. Equivalent elements, materials, processes or steps may be substituted for those representatively illustrated and described herein. Moreover, certain features of the disclosure may be utilized independently of the use of other features, all as would be apparent to one skilled in the art after having the benefit of this description of the disclosure. Expressions such as “including”, “comprising”, “incorporating”, “consisting of”, “have”, “is” used to describe and claim the present disclosure are intended to be construed in a non-exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural. , Claims:We Claim:

1. A spider (100) of a motor (500), the spider (100) comprising:
a hollow cylinder (112), the hollow cylinder (112) comprising an inner wall (102) facing centre of the hollow cylinder (112) and an outer wall (104) facing opposite to the inner wall (102) and the hollow cylinder (112) comprising:
at least one protrusion (108), the at least one protrusion (108) is disposed on the inner wall (102) of the hollow cylinder (112) and the at least one protrusion (108) is facing centre of the hollow cylinder (112); and
a perforated circular disc (110), the perforated circular disc (110) is moulded between the inner wall (102) of the hollow cylinder (112);
wherein the perforated moulded circular disc (110) is moulded at a predetermined height inside the hollow cylinder (112).

2. The spider (100) of the motor (500) as claimed in claim 1, wherein the centre of the hollow cylinder (112) comprising a hollow opening (106).

3. The spider (100) of the motor (500) as claimed in claim 2, wherein the hollow opening (106) is configured to accommodate at least one shaft (502); and wherein the hollow opening (106) is disposed at a centre of the perforated circular disc (110).

4. The spider (100) of the motor (500) as claimed in claim 1, wherein the at least one protrusion (108) is placed uniformly along the inner wall (102) of the hollow cylinder (112).

5. A stator (200) of a motor (500), the stator (200) comprising:
plurality of stator sheets (204) assembled on top of each other within a spider (100), wherein each stator sheet of the plurality of stator sheets (204) comprising:
an inner circumference (406), the inner circumference (406) facing centre of corresponding stator sheet (400) of the plurality of stator sheets (204);
an outer circumference (408), the outer circumference (408) is facing opposite to the inner circumference (406); and
at least one hollow hump (404), the at least one hollow hump (404) is disposed on the inner circumference (406) of the corresponding stator sheet (400) of the plurality of stator sheets (204);
wherein the plurality of stator sheets (204) is coaxially aligned over one another such that the at least one hollow hump (404) of plurality of stator sheets (204) coaxially aligns with each other to form at least one hollow rail (208),
wherein the at least one hollow rail (208) is configured to receive at least one fastener (302) to detachably attach the plurality of stator sheets (204) to form an interlock.

6. The stator (200) of the motor (500) as claimed in claim 5, wherein the at least one hollow rail (208) is placed uniformly along the inner circumference (406).

7. The stator (200) of the motor (500) as claimed in claim 5, wherein the stator (200) further comprising an inner circumference (202) and an outer circumference (210), wherein the outer circumference (210) comprising: copper winding, magnet, an air gap (206) and plurality of teeth.

8. The stator (200) of the motor (500) as claimed in claim 7, wherein the air gap (206) is of 0.25mm to 0.75mm.

9. A motor (500), the motor (500) comprising:
a spider (100), the spider (100) comprising:
a hollow cylinder (112), the hollow cylinder (112) comprising an inner wall (102) facing centre of the hollow cylinder (112),
an outer wall (104) facing opposite to the inner wall (102) and the inner wall (102),
at least one protrusion (108), the at least one protrusion (108) is disposed on the inner wall (102) and the at least one protrusion (108) facing centre of the hollow cylinder (112), and
a perforated circular disc (110), the perforated circular disc (110) is moulded between the inner wall (102) of the hollow cylinder (112); and
a stator (200), the stator (200) comprising plurality of stator sheets (204) assembled on top of each other within the spider (100), wherein each stator sheet of the plurality of stator sheets (204) comprising:
an inner circumference (406), the inner circumference (406) facing centre of corresponding stator sheet (400) of the plurality of stator sheets (204);
an outer circumference (408), the outer circumference (408) is facing opposite to the inner circumference (406), and
at least one hollow hump (404), the at least one hollow hump (404) is disposed on the inner circumference (406) of the corresponding stator sheet (400) of the plurality of stator sheets (204);
wherein the plurality of stator sheets (204) is coaxially aligned over one another such that the at least one hollow hump (404) of plurality of stator sheets (204) coaxially aligns with each other to form at least one hollow rail (208),
wherein the at least one hollow rail (208) is configured to receive at least one fastener (302) to detachably attach plurality of stator sheets (204) to form an interlock.

10. The motor (500) as claimed in claim 9, wherein the perforated moulded circular disc (110) is moulded at a predetermined height inside the hollow cylinder (112).

11. The motor (500) as claimed in claim 9, wherein the inner circumference (406) of the stator (200) comprising the at least one hollow rail (208) corresponding to the at least one hollow hump (404) of the inner wall (102) of the spider (100);
wherein the at least one hollow rail (208) is corresponds to the at least one protrusion (108) of the spider (100) to couple the spider (100) with the stator (200); and
wherein the interlock is used to connect the plurality of stator sheets (204) on the outer circumference (408) of the stator (200).

12. The motor (500) as claimed in claim 10, wherein the spider (100) is made of a first material and the stator (200) is made of a second material; and wherein the second material is having a higher thermal expansion point then the first material.

13. The motor (500) as claimed in claim 10, wherein the spider (100) comprising a hollow opening (106) at the centre of the hollow cylinder (112); wherein the hollow opening (106) is disposed at a centre of the perforated circular disc (110); wherein the hollow opening (106) configured to accommodate at least one shaft (502); and wherein the at least one shaft (502) is assembled with the spider (100).

14. The motor (500) as claimed in claim 13, wherein the at least one shaft (502) is assembled with the spider (100) and mounted on a swing arm of a vehicle.

15. The motor (500) as claimed in claim 13 and wherein the hollow opening (106) is parallel to the at least one protrusion (108) is placed on the inner wall (102) of the spider (100).

16. The motor (500) as claimed in claim 10, wherein the spider (100) further comprises a circular cover plate (504), the circular cover plate (504) comprising at least one opening for the at least one fastener (302) to lock the plurality of stator sheets (204) placed over the spider (100); wherein the circular cover plate (504) is placed over outermost stator sheet of the plurality of stator sheets (204); and wherein the at least one opening is placed parallelly to the at least one protrusion (108).

17. The motor (500) as claimed in claim 10, wherein the stator (200) further comprising at least one hall sensor (401, 402, 402), wherein the at least one hall sensor (401, 402, 402) is placed on the outer circumference (408).

18. The motor (500) as claimed in claim 10, wherein the at least one protrusion (108) is placed uniformly along the inner wall (102) of the hollow cylinder (112).

19. The motor (500) as claimed in claim 10, wherein the at least one hollow rail (208) is placed uniformly along the inner circumference (406) of the each stator sheet (400) of the plurality of stator sheets (204).

20. The motor (500) as claimed in claim 10, wherein the stator (200) further comprising an inner circumference (202) and an outer circumference (210), wherein the outer circumference (210) comprising: copper winding, magnet, an air gap (206) and plurality of teeth.

21. The motor (500) as claimed in claim 21, wherein the outer circumference (408) comprises the magnets with the air gap (206) is of 0.25mm to 0.75mm.