Description:TECHNICAL FIELD

[001] The present disclosure generally relates to the field of electric motors and more particularly to a stator tooth for a stator of an electric motor.

BACKGROUND

[002] An electric motor is a device that converts electrical energy into mechanical energy. The electric motor operates based on the principle of electromagnetic induction, where the interaction of magnetic fields generates motion. In the context of an electric vehicle, an electric motor converts electrical energy from a battery into mechanical energy to drive the electric vehicle. Generally, the electric vehicles use brushless direct current (BLDC) motors for their efficiency, reliability, and maintenance requirements.

[003] Fundamental components of the electric motor include a rotor and a stator, working together to generate motion. Typically, the rotor comprises a coil or coils of wire wound around a core, or magnets in the rotor core, and it is connected to a shaft of the motor. When an electric current flows through the coil, it interacts with the magnetic field produced by the stator, causing the rotor to turn. The stator surrounds the rotor and creates a magnetic field. The stator comprises coils or windings of wire that are connected to the power supply. When electric current flows through the stator windings, it produces a magnetic field that interacts with the magnetic field of the rotor, causing the rotor to rotate.

[004] The stators can be categorized into two main types, concentrated winding stators and distributed winding stators. The concentrated winding stator can be made through continuous stators or segmented stators which use corresponding winding techniques. In a continuous stator, a continuous winding covers the circumference of each tooth of the stator. In contrast, a segmented stator has the stator and winding divided into distinct segments, and each segment is responsible for generating a portion of the stator's magnetic field. The construction of a segmented winding stator involves multiple stator teeth, typically made of laminated iron or steel sheets. Each tooth contains copper coils, and these coils are connected to the power supply or invertor. Conventionally, plastic bobbins are used to electrically isolate the copper coils from the stator tooth in the construction process. The plastic bobbins also provide support to form and wind the wire in addition to being electrically insulative. Nevertheless, the plastic bobbins exhibit limited thermal conductivity, failing to establish an efficient heat dissipation route from the coils to the stator and ultimately to the motor housing. For example, the electrical resistance of the stator winding increases with temperature, leading to higher losses and reduced efficiency. Further, increase in temperature may lead to insulation breakdown, reduced motor life, and potential failure. Furthermore, excessive heat may demagnetize the stator core material, affecting the motor's magnetic properties and efficiency.

BRIEF SUMMARY

[005] This summary is provided to introduce a selection of concepts in a simple manner that is further described in the detailed description of the disclosure. This summary is not intended to identify key or essential inventive concepts of the subject matter nor is it intended for determining the scope of the disclosure.

[006] To overcome or mitigate at least one of the problems mentioned above, there exists a need for a stator tooth, for a stator of an electric motor, that establishes an efficient heat dissipation route from coil to the stator.

[007] Thus, disclosed is a stator tooth for a stator of an electric motor. The stator tooth comprises, an iron part having a central portion, and a first portion and a second portion substantially perpendicular to the central portion, at least one electrically insulating paper adhered to at least a first pair of sides of the central portion of the iron part of the stator tooth and two surfaces of the first portion and two surfaces of the second portion contiguous with the first pair of sides, two electrically insulating bobbins covering a front portion and a back portion of the central portion of the iron part of the stator tooth, and a coil wound around the central portion covered with the least one electrically insulating paper and the two electrically insulating bobbins.

[008] Further disclosed is a method of forming a stator tooth for a stator of a motor. The method comprises, adhering at least one electrically insulating paper to at least a first pair of sides of a central portion of an iron part of the stator tooth and two surfaces of a first portion and two surfaces of a second portion contiguous with the first pair of sides, wherein the first portion and the second portion are substantially perpendicular to the central portion, detachably coupling two electrically insulating bobbins, to a slot on a surface of the first portion of the iron part of the stator tooth, for covering a front portion and a back portion of the central portion of the iron part of the stator tooth for receiving a coil to be wound around the central portion covered with the at least one electrically insulating paper and the two electrically insulating bobbins.

[009] To further clarify advantages and features of the present disclosure, a more particular description of the disclosure will be rendered by reference to specific embodiments thereof, which is illustrated in the appended figures. It is to be appreciated that these figures depict only typical embodiments of the disclosure and are therefore not to be considered limiting of its scope. The disclosure will be described and explained with additional specificity and detail with the accompanying figures.

BRIEF DESCRIPTION OF THE FIGURES

[0010] The disclosed method and system will be described and explained with additional specificity and detail with the accompanying figures in which:

[0011] Figure 1A shows a front view of an exemplary stator tooth for a stator of an electric motor in accordance with an embodiment of the present disclosure;

[0012] Figure 1B shows an isometric view of the exemplary stator tooth;

[0013] Figure 2A illustrates a stator tooth with at least one electrically insulating paper and a method of adhering the at least one electrically insulating paper to the stator tooth in accordance with an embodiment of the present disclosure;

[0014] Figure 2B is a greyscale image illustrating a stator tooth with at least one electrically insulating paper in accordance with an embodiment of the present disclosure.

[0015] Figure 2C illustrates a stator tooth with two electrically insulating papers and a method of adhering the two electrically insulating papers to the stator tooth in accordance with an embodiment of the present disclosure;

[0016] Figure 3 illustrates a stator tooth with two electrically insulating bobbins in accordance with an embodiment of the present disclosure;

[0017] Figure 4 shows an exemplary bobbin in accordance with an embodiment of the present disclosure;

[0018] Figure 5A shows a side view of a stator in accordance with an embodiment of the present disclosure; and

[0019] Figure 5B shows a perspective view of the stator in accordance with an embodiment of the present disclosure.

[0020] Further, persons skilled in the art to which this disclosure belongs will appreciate that elements in the figures are illustrated for simplicity and may not have been necessarily drawn to scale. Furthermore, in terms of the construction of the joining ring and one or more components of the bearing assembly may have been represented in the figures by conventional symbols, and the figures may show only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the figures with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.

DETAILED DESCRIPTION

[0021] For the purpose of promoting an understanding of the principles of the present disclosure, reference will now be made to the various embodiments and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the present disclosure is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the present disclosure as illustrated therein being contemplated as would normally occur to one skilled in the art to which the present disclosure relates.

[0022] It will be understood by those skilled in the art that the foregoing general description and the following detailed description are explanatory of the present disclosure and are not intended to be restrictive thereof.

[0023] Whether or not a certain feature or element was limited to being used only once, it may still be referred to as “one or more features” or “one or more elements” or “at least one feature” or “at least one element.” Furthermore, the use of the terms “one or more” or “at least one” feature or element do not preclude there being none of that feature or element, unless otherwise specified by limiting language including, but not limited to, “there needs to be one or more…” or “one or more elements is required.”

[0024] Reference is made herein to some “embodiments.” It should be understood that an embodiment is an example of a possible implementation of any features and/or elements of the present disclosure. Some embodiments have been described for the purpose of explaining one or more of the potential ways in which the specific features and/or elements of the proposed disclosure fulfil the requirements of uniqueness, utility, and non-obviousness.

[0025] Use of the phrases and/or terms including, but not limited to, “a first embodiment,” “a further embodiment,” “an alternative embodiment,” “one embodiment,” “an embodiment,” “multiple embodiments,” “some embodiments,” “other embodiments,” “further embodiment”, “furthermore embodiment”, “additional embodiment” or other variants thereof do not necessarily refer to the same embodiments. Unless otherwise specified, one or more particular features and/or elements described in connection with one or more embodiments may be found in one embodiment, or may be found in more than one embodiment, or may be found in all embodiments, or may be found in no embodiments. Although one or more features and/or elements may be described herein in the context of only a single embodiment, or in the context of more than one embodiment, or in the context of all embodiments, the features and/or elements may instead be provided separately or in any appropriate combination or not at all. Conversely, any features and/or elements described in the context of separate embodiments may alternatively be realized as existing together in the context of a single embodiment.

[0026] Any particular and all details set forth herein are used in the context of some embodiments and therefore should not necessarily be taken as limiting factors to the proposed disclosure.

[0027] The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded by “comprises... a” does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components.

[0028] Embodiments of the present disclosure will be described below in detail with reference to the accompanying drawings.

[0029] For the sake of clarity, the first digit of a reference numeral of each component of the present disclosure is indicative of the Figure number, in which the corresponding component is shown. For example, reference numerals starting with digit “1” are shown at least in Figure 1. Similarly, reference numerals starting with digit “2” are shown at least in Figure 2.

[0030] Figure 1A shows a front view of an exemplary stator tooth for a stator of an electric motor in accordance with an embodiment of the present disclosure. Figure 1B shows an isometric view of the exemplary stator tooth. As shown in Figure 1A, stator tooth 100 comprises an iron part having a central portion 105, and a first portion 110 and a second portion 115 substantially perpendicular to the central portion 105. That is, the axis (as shown by a dotted line A) of first portion 110 and the second portion 115 are substantially perpendicular to the axis (as shown by a dotted line B) of the central portion 105. It is to be noted that the stator teeth 100 may be made of laminated iron or steel sheets, and copper wire is wound around the central portion 105 of the iron part of the stator tooth 100.

[0031] Referring to Figure 1A and Figure 1B, the central portion 105 portion of the iron part of the stator tooth 100 is substantially rectangular in shape and comprises a first pair of sides 120 and 125, and a front portion 130 and a back portion 135. Further, the first portion 110 of the iron part of the stator tooth 100 comprises two surfaces 140 and 145, wherein the two surfaces 140 and 145 are contiguous with the first pair of sides 120 and 125 respectively. That is, the surface 140 is contiguous with the side 120 of the first pair of sides and the surface 145 is contiguous with the side 125 of the first pair of sides. Furthermore, the second portion 115 of the iron part of the stator tooth 100 comprises two surfaces 150 and 155, wherein the two surfaces 150 and 155 are contiguous with the first pair of sides 120 and 125 respectively. That is, the surface 150 is contiguous with the side 120 of the first pair of sides and the surface 155 is contiguous with the side 125 of the first pair of sides.

[0032] In one embodiment of the present disclosure, the first portion 110 of the iron part of the stator tooth 100 comprises a slot 160 substantially at the center of a surface 165 for detachably coupling two electrically insulating bobbins. In one embodiment, the slot 160 is made along the width of the first portion 110 of the iron part of the stator tooth 100.

[0033] As described, the stator tooth 100 comprises the iron part, wherein the iron part comprises the central portion 105, and the first portion 110 and the second portion 115 substantially perpendicular to the central portion 105. In one embodiment of the present disclosure, the first portion 110 and the second portion 115 of the iron part of the stator tooth 100 are of the same length to form an I-shaped stator tooth. In another embodiment of the present disclosure, the second portion 115 of the iron part of the stator tooth 100 is smaller in length compared to the first portion 110 to form a T-shaped stator tooth.

[0034] In one embodiment of the present disclosure, at least one electrically insulating paper is adhered to the stator tooth 100 to provide electrical insulation between the iron part of the stator tooth 100 and the coil. Further, two electrically insulating bobbins are detachably coupled to the slot 160 on the surface 165 of the first portion 110 of the iron part of the stator tooth 100, for covering the front portion 130 and the back portion 135 of the central portion 105 of the iron part of the stator tooth 100. Then a coil wound around the central portion 105 covered with the least one electrically insulating paper and the two electrically insulating bobbins, wherein the at least one electrically insulating paper provides electrical insulation between the iron part of the stator tooth 100 and the coil, and the two electrically insulating bobbins provide structural support for the coil.

[0035] Figure 2A illustrates a stator tooth with at least one electrically insulating paper and a method of adhering the at least one electrically insulating paper to the stator tooth in accordance with an embodiment of the present disclosure. As shown, at least one electrically insulating paper 200 is adhered to the stator tooth 100 to provide electrical insulation between the iron part of the stator tooth 100 and the coil. In one embodiment of the present disclosure, the at least one electrically insulating paper 200 is affixed to at least the first pair of sides 120 and 125 of the central portion 105 of the iron part of the stator tooth 100, and to the front portion 130 and the back portion 135 of the central portion 105 of the iron part of the stator tooth 100. Further, the at least one electrically insulating paper 200 is adhered to the two surfaces 140 and 145 of the first portion 110, and to the two surfaces 150 and 155 of the second portion 115. That is, a single electrically insulating paper 200 is used and the single electrically insulating paper 200 is cut to the intended shape as shown and adhered to the stator tooth 100. The thicker line L illustrates the least the first pair of sides 120 wrapped around the central portion 105 of the iron part of the stator tooth 100 and covers the two surfaces 140 and 145 of the first portion 110, and to the two surfaces 150 and 155 of the second portion 115.

[0036] Figure 2B is a greyscale image illustrating a stator tooth with at least one electrically insulating paper in accordance with an embodiment of the present disclosure. It is to be noted that the greyscale image is shown for better understating. As shown, the at least one electrically insulating paper 200 (shown in white) is wrapped around the central portion 105 of the iron part of the stator tooth 100 and covers the two surfaces 140 and 145 of the first portion 110, and to the two surfaces 150 and 155 of the second portion 115.

[0037] Alternatively, two or more electrically insulating papers may be employed to cover at least the first pair of sides 120 and 125 of the central portion 105 of the iron part of the stator tooth 100, and the surfaces of the first portion 110 and the second portion 115 that are contiguous with the first pair of sides 120 and 125. Figure 2C illustrates a stator tooth with two electrically insulating papers and a method of adhering the two electrically insulating papers to the stator tooth in accordance with an embodiment of the present disclosure. As shown, a first electrically insulating paper 205 is adhered to the side 120 of the first pair of sides 120 and 125 of the central portion 105 of the iron part of the stator tooth 100, and to the surface 140 of the first portion 110 and the surface 150 of the second portion 115 of the iron part of the stator tooth 100. Similarly, a second electrically insulating paper 210 is adhered to the side 125 of the first pair of sides 120 and 125 of the central portion 105 of the iron part of the stator tooth 100, and to the surface 145 of the first portion 110 and the surface 155 of the second portion 115 of the iron part of the stator tooth 100. In such an implementation, the front portion 130 and the back portion 135 of the central portion 105 of the iron part of the stator tooth 100, wherein the two electrically bobbins are attached (not shown), are not covered with the electrically insulating paper.

[0038] In a preferred embodiment of the present disclosure, as shown in Figure 2A, a single electrically insulating paper 200 is adhered to the first pair of sides 120 and 125 of the central portion 105 of the iron part of the stator tooth 100, and to the front portion 130 and the back portion 135 of the central portion 105 of the iron part of the stator tooth 100, and to the two surfaces 140 and 145 of the first portion 110, and to the two surfaces 150 and 155 of the second portion 115. That is, the single electrically insulating paper 200 is cut to the intended shape and adhered to the stator tooth 100 as shown in Figure 2A. The dotted lines indicate directives for folding the electrically insulating paper 200 along the edges of the stator tooth 100. In one embodiment of the present disclosure, the least one electrically insulating paper 200 comprises adhesive liners for adhering the least one electrically insulating paper 200 to the stator tooth 100. The adhesive liners may be provided along the dotted lines where the the electrically insulating paper 200 is folded along the edges of the stator tooth 100. Alternatively, adhesive may be applied on at least on the surfaces of the stator tooth 100 and on an inner surface of the electrically insulating paper 200, and then the electrically insulating paper 200 is adhered to the stator tooth 100.

[0039] In one embodiment of the present disclosure, the stator tooth 100 comprises two electrically insulating bobbins covering the front portion 130 and the back portion 135 of the central portion 105 of the iron part of the stator tooth 100, wherein two electrically insulating bobbins provide support to the coil wound around the stator tooth 100. Figure 3 illustrates a stator tooth with two electrically insulating bobbins in accordance with an embodiment of the present disclosure. As shown, two electrically insulating bobbins 305 and 310 are detachably fitted in to the slot 160 on the surface 165 of the first portion 110 of the iron part of the stator tooth 100. The two electrically insulating bobbins 305 and 310 cover the front portion 130 and the back portion 135 of the central portion 105 of the iron part of the stator tooth 100. Then the coil is wound around the central portion 105 covered with the at least one electrically insulating paper 200 and the two electrically insulating bobbins 305 and 310. The two electrically insulating bobbins 305 and 310 provide structural support to the coil 315.

[0040] In one embodiment of the present disclosure, each of the electrically insulating bobbin is substantially L-shaped and a shorter arm of each L-shaped electrically insulating bobbin is fitted in to the slot 160 on the first portion 110 of the iron part of the stator tooth 100. Further, a first face of a longer arm of each L-shaped electrically insulating bobbin covers the front portion 130 and the back portion 135 of the central portion 105 of the iron part of the stator tooth 100 respectively, wherein a second face is substantially curved for receiving the coil 315.

[0041] Figure 4 shows an exemplary bobbin in accordance with an embodiment of the present disclosure. As shown, the electrically insulating bobbin 305 is L-shaped and comprises a shorter arm 405 and a longer arm 410, wherein the longer arm 410 comprises a first face 415 and a second face 420 that is substantially curved for receiving the coil 315 to be wound. In one embodiment, the shorter arm 405 of the L-shaped electrically insulating bobbin 305 is fitted in to the slot 160 on the first portion 110 of the iron part of the stator tooth 100. Further, the first face 415 of a longer arm 410 of the L-shaped electrically insulating bobbin 305 covers the front portion 130 of the central portion 105 of the iron part of the stator tooth 100, and the second face 420 is substantially curved for receiving the coil 315. Similarly, the L-shaped electrically insulating bobbin 310 is fitted in to the slot 160 and covers the back portion 135 of the central portion 105 of the iron part of the stator tooth 100. It is to be noted that the two electrically insulating bobbins 305 and 310 are made of plastic that provide electrical insulation and structural support to the coil 315.

[0042] As described, the stator tooth 100 comprises the at least one electrically insulating paper 200 adhered to at least the first pair of sides 120 and 125 of the central portion 105 of the iron part of the stator tooth 100 and to the two surfaces 140 and 145 of the first portion 110 and two surfaces 150 and 155 of the second portion 115 contiguous with the first pair of sides 120 and 125. Further, the stator tooth 100 comprises the two electrically insulating bobbins 305 and 310 fixed into the slot 160 and the two electrically insulating bobbins 305 and 310 covers the front portion 130 and the back portion 135 of the central portion 105 of the iron part of the stator tooth 100. During construction of the stator tooth 100, the at least one electrically insulating paper 200 is adhered to at least the first pair of sides 120 and 125 of the central portion 105, and to the two surfaces 140 and 145 of the first portion 110 and the two surfaces 150 and 155 of the second portion 115 of the stator tooth 100. Further, the two electrically insulating bobbins 305 and 310 are detachably coupled to the slot 160 of the first portion 110 of the iron part of the stator tooth 100, for covering the front portion 130 and the back portion 135 of the central portion 105 of the iron part of the stator tooth 100. Then the coil 315 is wound around the central portion 105 covered with the at least one electrically insulating paper 200 and the two electrically insulating bobbins 305 and 310. The at least one electrically insulating paper 200 provides electrical insulation and thermal conduction between the stator tooth 100 and the coil 315. Further, the two electrically insulating bobbins 305 and 310 provide electrical insulation between stator tooth 100 and the coil 315 and provide structural to the stator tooth 100 and the coil 315.

[0043] In one embodiment of the present disclosure, a plurality of stator tooth is assembled to form the stator for an electric motor. Figure 5A shows a side view of a stator in accordance with an embodiment of the present disclosure. Figure 5B shows a perspective view of the stator in accordance with an embodiment of the present disclosure. Referring to Figures 5A and 5B, a stator 500 comprises a plurality of stator tooth 505, wherein each stator tooth among the plurality of stator tooth 505 comprises at least one insulating paper 200 and two electrically insulating bobbins 305 and 310.

[001] As described, at least one electrically insulating paper 200 provides electrical insulation and thermal conduction between the stator tooth 100 and the coil 315. Further, the two electrically insulating bobbins 305 and 310 provide electrical insulation between stator tooth 100 and the coil 315 and provide structural to the stator tooth 100 and the coil 315. Hence, the stator comprising the proposed stator tooth substantially improves the performance of the electric motor. That is, the proposed stator tooth keeps keep the stator within the safe temperature range, helps to preserve the integrity of the insulation and prolong the motor's lifespan, helps to preserve the magnetic characteristics of the stator, minimizes thermal stress, etc.

[002] While specific language has been used to describe the disclosure, any limitations arising on account of the same are not intended. As would be apparent to a person skilled in the art, various working modifications may be made to the method in order to implement the inventive concept as taught herein.

[003] The figures and the foregoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment. For example, orders of processes described herein may be changed and are not limited to the manner described herein. Moreover, the actions of any flow diagram need not be implemented in the order shown; nor do all of the acts necessarily need to be performed. Also, those acts that are not dependent on other acts may be performed in parallel with the other acts. The scope of embodiments is by no means limited by these specific examples. Numerous variations, whether explicitly given in the specification or not, such as differences in structure, dimension, and use of material, are possible. The scope of embodiments is at least as broad as given by the following claims.

List of reference numerals:
Components Reference numerals
Stator 100
Central portion of an iron part of the stator tooth 105
First portion of the iron part of the stator tooth 110
Second portion of the iron part of the stator tooth 115
First pair of sides of the central portion 120 and 125
Front portion of the central portion 130
Back portion of the central portion 135
Two surfaces of the first portion 140 and 145
Two surfaces of the second portion 150 and 155
Slot 160
Surface of the first portion 165
At least one electrically insulating paper 200
First electrically insulating paper 205
Second electrically insulating paper 210
Two electrically insulating bobbins 305 and 310
Coil 315
Shorter arm of an L-shaped electrically insulating bobbin 405
Londer arm of an L-shaped electrically insulating bobbin 410
First face of the longer arm 415
Second face of the longer arm 420
Stator 500
Plurality of stator tooth 505 , Claims:1. A stator tooth (100) for a stator (500) of an electric motor, the stator tooth (100) comprising:
an iron part having a central portion (105), and a first portion (110) and a second portion (115) substantially perpendicular to the central portion (105);
at least one electrically insulating paper (200) adhered to at least a first pair of sides (120 and 125) of the central portion (105) of the iron part of the stator tooth (100) and two surfaces (140 and 145) of the first portion (110) and two surfaces (150 and 155) of the second portion (115) contiguous with the first pair of sides (120 and 125);
two electrically insulating bobbins (305 and 310) covering a front portion (130) and a back portion (135) of the central portion (105) of the iron part of the stator tooth (100); and
a coil (315) wound around the central portion (105) covered with the least one electrically insulating paper (200) and the two electrically insulating bobbins (305 and 310).

2. ¬¬¬¬The stator tooth (100) as claimed in claim 1, wherein the at least one electrically insulating paper (200) is adhered to the front portion (130) and the back portion (135) of the central portion (105) of the iron part of the stator tooth (100), apart from covering the first pair of sides (120 and 125) of the central portion (105).

3. The stator tooth (100) as claimed in claim 1, wherein the at least one electrically insulating paper (200) comprises an adhesive on at least one of its surfaces.

4. The stator tooth (100) as claimed in claim 1, wherein the first portion (110) of the iron part of the stator tooth (100) comprises a slot (160) substantially at the center of a surface (165) for detachably coupling the two electrically insulating bobbins (305 and 310).

5. The stator tooth (100) as claimed in claim 4, wherein each of the electrically insulating bobbin (305 and 310) is substantially L-shaped and a shorter arm (405) of each L-shaped electrically insulating bobbin (305 and 310) is fitted in to the slot (160) on the first portion (110) of the iron part of the stator tooth (100).

6. The stator tooth (100) as claimed in claim 5, wherein a first face (415) of a longer arm (410) of each L-shaped electrically insulating bobbin covers the front portion (130) and the back portion (135) of the central portion (105) of the iron part of the stator tooth (100) respectively, wherein a second face (420) is substantially curved for receiving the coil (315).

7. The stator tooth (100) as claimed in claim 1, wherein the first portion (110) and the second portion (115) of the iron part of the stator tooth (100) are of the same length to form an I-shaped stator tooth (100).

8. The stator tooth (100) as claimed in claim 1, wherein the second portion (115) of the iron part of the stator tooth (100) is smaller in length compared to the first portion (110) to form a T-shaped stator tooth (100).

9. A method of forming a stator tooth (100) for a stator (500) of a motor, the method comprising:
adhering at least one electrically insulating paper (200) to at least a first pair of sides (120 and 125) of a central portion (105) of an iron part of the stator tooth (100) and two surfaces (140 and 145) of a first portion (110) and two surfaces (150 and 155) of a second portion (115) contiguous with the first pair of sides (120 and 125), wherein the first portion (110) and the second portion (115) are substantially perpendicular to the central portion (105);
detachably coupling two electrically insulating bobbins (305 and 310), to a slot (160) on a surface of the first portion (110) of the iron part of the stator tooth (100), for covering a front portion (130) and a back portion (135) of the central portion (105) of the iron part of the stator tooth (100) for receiving a coil (315) to be wound around the central portion (105) covered with the at least one electrically insulating paper (200) and the two electrically insulating bobbins (305 and 310).

10. The method as claimed in claim 6, the at least one electrically insulating paper (200) comprises adhesive liners.

11. The method as claimed in claim 6, wherein the at least one electrically insulating paper (200) is adhered using glue.

12. The method as claimed in claim 6, wherein the slot (160) is substantially at the center of the surface (165) of the first portion (110) of the iron part of the stator tooth (100).

13. A segmented stator (500) for a motor, the segmented stator (500) comprising:
a plurality of stator tooth (505); and
a plurality of windings, each winding wound around a respective stator tooth (505) of the plurality of stator tooth (505);
characterized in that each stator tooth (505) comprises:
an iron part having a central portion (105), and a first portion (110) and a second portion (115) substantially perpendicular to the central portion (105);
at least one electrically insulating paper (200) adhered to at least a first pair of sides (120 and 125) of the central portion (105) of the iron part of the stator tooth (505) and two surfaces (140 and 145) of the first portion (110) and two surfaces (150 and 155) of the second portion (115) contiguous with the first pair of sides (120 and 125);
two electrically insulating bobbins (305 and 310) covering a front portion (130) and a back portion (135) of the central portion (105) of the iron part of the stator tooth (505); and
a coil (315) wound around the central portion (105) covered with the least one electrically insulating paper (200) and the two electrically insulating bobbins (305 and 310).