FORM 2
THE PATENTS ACT 1970
[39 OF 1970]
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
[See section 10; rule 13] TITLE: “AN INTEGRATED MOTOR DIFFERENTIAL ASSEMBLY”
Name and Address of the Applicant:
TATA MOTORS LIMITED of Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai - 400 001 Maharashtra, India.
Nationality: Indian
The following specification particularly describes the invention and the manner in which it is to be performed.

TECHNICAL FIELD
Present disclosure relates in general to the field of automobiles. Particularly, but not exclusively, the present disclosure relates to a drive train of a vehicle. Further, embodiments of the present disclosure disclose an integrated motor differential assembly of an electric vehicle.
BACKGROUND OF THE DISCLOSURE
Generally, in the automobile industry, internal combustion engines are employed for driving the vehicles. However, due to increase in global warming, automobile companies are actively working to develop alternative powertrain systems in an effort to reduce the level of pollutants exhausted into the air by the internal combustion engines. Significant developments have been made towards electric vehicles which use electric motor to drive the vehicle.
Conventionally, in the electric vehicles electronically controlled axles (E-axles) are employed to drive the vehicle. In the conventional E-Axle, a motor and a gearbox are arranged parallel to the vehicle axle. That is, the motor is coupled to the gearbox and in-turn the gearbox is coupled to a differential which drives the vehicle axles. This construction of providing the motor and the gearbox parallel to the axis of the vehicle axle leads to requirement of large mounting space. The large mounting space of the E-axles leads to constraints in vehicle packaging, as the battery size has to be limited and adversely affecting the range of the vehicle. Additionally, balancing the center of gravity of the conventional E-Axle is difficult as the motor and the gearbox are not in line with the vehicle axle, which would lead to improper vehicle dynamics, which is undesired. Furthermore, due to such configuration, the distance between the motor and the axle increases, which may cause bending mode of the motor and gearbox arrangement, thereby demands for complex support arrangement, which is undesired.
Present disclosure is directed to overcome one or more limitations stated above or any other limitations associated with the known arts.
SUMMARY OF THE DISCLOSURE
One or more shortcomings of the prior art are overcome by an integrated motor differential assembly as claimed and additional advantages are provided through the integrated motor

differential assembly as claimed in the present disclosure. Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.
In one non-limiting embodiment, an integrated motor differential assembly of an electric vehicle is disclosed. The assembly includes a stator and a rotor rotatably disposed within the stator. The rotor is adapted to rotate upon energizing the stator. Further, a differential is disposed within the rotor and adapted to rotate along with the rotor. The differential is adapted to transmit rotational motion from the rotor to axles of the vehicle thereby the differential functions to provide desired varying speeds at both wheel ends. Furthermore, a gear drive is coupled to each end of the differential and enclosed within gear drive housing which is connected to the stator. The gear drive is adapted to receive rotational motion from the differential for transmitting the rotational motion at different speed ratios to the axles of the electric vehicle. The configuration of integrating the differential within the electric motor facilitates a compact drive train enabling effective vehicle packaging, eliminates need of complex mounting structures and aids in balancing the center of gravity, thus providing better vehicle dynamics. Further, the configuration of the integrated motor differential assembly mitigates the chances of bending unlike the conventional e-axle assemblies.
In an embodiment, the stator includes a stator housing and a stator subassembly which is fixed to the stator housing.
In an embodiment, the differential includes a differential housing which is coupled to the rotor and adapted to rotate along with the rotor. Further, the differential includes a cross-pin which is disposed within the differential housing. Additionally, a bevel pinion is rotatably disposed at each end of the cross-pin.
In an embodiment, the differential housing includes a first section and a second section which are connected with each other and are disposed within the rotor.
In an embodiment, the differential includes a side gear fixed to each of the first section and the second section of the differential housing.

In an embodiment, the side gear is meshingly engaged with the bevel pinion and adapted to rotate corresponding to rotation of the differential housing.
In an embodiment, the gear drive is a sun-planetary gear drive.
In an embodiment, the gear drive includes a sun gear which is coupled to the side gear of the differential, where the sun gear is adapted to rotate along with the side gear. Further, the gear drive includes a plurality of planetary gears which are meshingly engaged with the sun gear. The plurality of planetary gears are adapted rotate and revolve around the sun gear. Additionally, a planetary gear carrier is coupled to the plurality of planetary gears and is adapted to rotate corresponding to revolution of the plurality of planetary gears around the sun gear. The planetary gear carrier is connected to the axle to rotate the axle based on rotation of the differential.
In an embodiment, the gear drive housing is coupled to each end of the stator housing and adapted to accommodate the gear drive.
In an embodiment, the assembly includes a cover member which is coupled to the gear drive housing and adapted to receive the axle.
The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The novel features and characteristics of the disclosure are set forth in the appended claims. The disclosure itself, however, as well as a preferred mode of use, further objectives, and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiments when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:

Fig. 1 illustrates a perspective view of an of electronically controlled axle depicting an integrated motor differential assembly, according to an embodiment of the present disclosure.
Fig. 2 illustrates an exploded view of the integrated motor differential assembly, according to an embodiment of the present disclosure.
Fig. 3 illustrates a cross-sectional view of the integrated motor differential assembly, according to an embodiment of the present disclosure.
Fig. 4 illustrates an exploded view of a differential positioned within a rotor in the integrated motor differential assembly, according to an embodiment of the present disclosure.
Fig. 5 illustrates an exploded view of a gear drive of the integrated motor differential assembly, according to an embodiment of the present disclosure.
The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the system and method illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which forms the subject of the claims of the disclosure. It should be appreciated by those skilled in the art that, the conception and specific embodiments disclosed may be readily utilized as a basis for modifying other devices, assemblies, system, methods and processes for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that, such equivalent construction do not depart from the scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristics of the disclosure, to its construction and features, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be

expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.
In the present document, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the present subject matter described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
While the disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and will be described in detail below. It should be understood, however that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure.
The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusions, such that a device or a system or a method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such device, assembly, system or method. In other words, one or more elements in a device or an assembly or a system or a method proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the device or system or method.
The construction and configuration of the mechanism of the present disclosure enables automatic calibration of the horn by maintaining contact between the first contact member and the second contact member. Thus, the mechanism the mitigates the need for manual tuning of the horn.
Reference will now be made to the exemplary embodiments of the disclosure, as illustrated in the accompanying drawings. Wherever possible, same numerals have been used to refer to the same or like parts. The following paragraphs describe the present disclosure with reference to Figs. 1-5.
Figs. 1 and 2, illustrates an electronically controlled axle having an integrated motor differential assembly (100) of an electric vehicle. In an embodiment, the electric vehicle [not shown in Figs] may be including but not limited to completely electric vehicles and hybrid vehicle. For example,

the integrated motor differential assembly (100) may be employed in vehicles such as electric cars, electric trucks and the like for powering the vehicle. The integrated motor differential assembly
(100) [herein after referred to as assembly (100)] may include a stator (25). The stator (25) may
include a stator housing (13) and a stator subassembly (14) which may be fixed to the stator
housing (13). The stator subassembly (14) may be configured to receive electrical energy from a
battery [not shown in Figs] of the electric vehicle [hereafter referred to as vehicle] and may get
energized. In an embodiment, the stator subassembly (14) may include electrical coils [not shown
in Figs] which may get energized upon receiving electrical energy from the battery of the vehicle.
In an embodiment, the stator subassembly (14) may be connected to the accelerator pedal [not
shown in Figs] of the vehicle and may be configured to energize based on the acceleration inputs
received from the accelerator pedal. Further, the assembly (100) may include a rotor (15) which
may be rotatably disposed within the stator (25). The rotor (15) may be adapted to rotate upon
energizing the stator (25). In an embodiment, the rotor (15) may be disposed within the stator
subassembly (14) which may in-turn be positioned within the stator housing (13).
Further as seen in Figs. 2, 3 and 4, the assembly (100) may include a differential (101) which may be disposed within the rotor (15). The differential (101) may be rigidly fixed to the rotor (15) and may be adapted to rotate along with the rotor (15). The differential (101) may be adapted to transmit rotational motion from the rotor (15) to axles (2) of the vehicle for driving the vehicle. That is the axle (2) may be connected to a wheel hub (1) which may be adapted to support a wheel and the axle (2) may be adapted to rotate the wheel based on rotational motion received from the differential. As apparent from Fig. 3, the differential (101) may include a differential housing (17) which may be coupled to the rotor (15) and may be adapted to rotate along with the rotor (15). In an embodiment, the differential housing (17) may include a first section (17a) and a second section (17b) connected with each other and disposed within the rotor (15). The first section (17a) and the second section (17b) may be connected to each other through suitable fastening means, such as fasteners, and the first section (17a) and the second section (17b) may enclose various components of the differential (101). In another embodiment, the differential (101) may include a cross-pin (23) which may be disposed within the differential housing (17). Furthermore, the differential
(101) may include a bevel pinion (22) which may be rotatably disposed at each end of the cross-
pin (23). Additionally, the differential (101) includes a side gear (19) which may be fixed to each

of the first section (17a) and the second section (17b) of the differential housing (17). The side gear (19) may be meshingly engaged with the bevel pinion (22) at each end of the cross-pin (23) and may be adapted to rotate corresponding to rotation of the differential housing (17). In an embodiment, the side gear (19) may be coupled to the axle (2) of the vehicle.
In an embodiment, the rotational motion attained by the rotor (15) due to energizing of the stator subassembly (14) may be transferred to the differential housing (17). The differential housing (17) may in-turn transmit the rotational motion onto the side gear (19) such that the axle (2) which may be coupled to the side gear (19) may rotate upon energization of the stator subassembly (14). In an embodiment, during turning of the vehicle, the wheels of the vehicle may rotate at different speeds and such difference in speed may be compensated by the differential. For example, during turning of the vehicle, the side gear (19) fixed to the first section (17a) may rotate at a speed which may be greater or lesser than the speed of the side gear (19) which may be fixed to the second section (17b) of the differential housing (17). The side gear (19) having the greater speed may transmit the additional rotation of the wheel onto the bevel pinion (22) thereby regulating difference in rotational motion of the side gear (19) which are connected to each of the first section (17a) and the second section (17b) of the differential housing (17).
Referring now to Figs. 2, 3 and 5, the assembly (100) may include a gear drive (102) which may be coupled to each end of the differential. That is, a gear drive (102) may be provided at each end of the differential (101) and may be positioned between the differential (101) and the axle (2) of the vehicle. The gear drive (102) may be configured to deliver varied speed and torque requirement to the axles (2) based on rotational motion received from the differential (101). The gear drive (102) may be for example a sun-planetary gear drive (102). In an embodiment, the gear drive (102) may be adapted to receive rotational motion from the differential (101) for transmitting the rotational motion to the axles (2) for driving the vehicle. Further, the gear drive (102) may be enclosed within a gear drive housing (12). The gear drive housing (12) may be coupled to each end of the stator (25), that is the gear drive housing (12) may be connected to the stator housing (13) and may be adapted to accommodate the gear drive (102). In an embodiment, the gear drive housing (12) may be coupled to the stator housing (13) through suitable fastening means, for example, through fasteners. Furthermore, the gear drive (102) may include a sun gear (9) which may be coupled to the side gear (19) of the differential. The sun gear (9) may be adapted to rotate

along with the side gear (19), when the rotor (15) rotates based on energizing of the stator (25). Additionally, the gear drive (102) may include a plurality of planetary gears (8) which may be meshingly engaged with the sun gear (9). The plurality of planetary gears (8) may be adapted rotate and revolve around the sun gear (9). The revolution of the plurality of planetary gears (8) around the sun gear (9) facilitates reduction in rotational speed from the stator (25) to the axle (2). Additionally, the gear drive (102) may include a planetary gear carrier (6) which may be coupled to the plurality of planetary gears (8). The planetary gear carrier (6) may be adapted to rotate corresponding to revolution of the plurality of planetary gears (8) around the sun gear (9). Here, the planetary gear carrier (6) may be connected to the axle (2) of the vehicle and may be adapted to rotate the axle (2) based on rotation of the differential.
Further, the gear drive (102) may include a ring gear (10) which may be meshingly engaged with the plurality of planetary gears (8). The ring gear (10) may be adapted to be fixed to the stator housing (13) and remain stationary corresponding to revolution of the plurality of planetary gears (8). In an embodiment, the gear drive (102) may be configured to provide a reduction in the rotational speed to be transmitted to the axle (2) from the rotor (15). In an embodiment, the number of planetary gears (8) and the dimensions of the sun gear (9) and the plurality of planetary gears (8) may be determined based on the amount of reduction to be achieved by the gear drive (102).
Referring back to Figs. 1 and 2, the assembly (100) may include a cover member (3) which may be coupled to the gear drive housing (12) and may be adapted to receive the axle (2) of the vehicle. The cover member (3) may be coupled to the gear drive (102) housing at a side of the gear drive housing (12) which may be opposite to the stator housing (13). In an embodiment, the planetary gear carrier (6) may be disposed within the cover member (3). The planetary gear carrier (6) may be supported on the cover member (3) through a bearing which facilitates rotation of the planetary gear carrier (6) without leading to rotation of the cover member (3). Further, in an embodiment, the assembly (100) may include an oil seal (4) positioned on the cover member (3) to prevent entry of dust and foreign particles like dirt, water, metal powder, etc. from outside as well as prevent oil leakage from cover member (3) or from the gear drive housing (12).

In an embodiment, the assembly (100) may include a ball bearing (5). An outer race of the ball bearing (5) may be fixed in the stator housing (13) and an inner race of the ball bearing (5) may be fixed in rotating components like planetary gear carrier (6) and/or the differential housing (17) to supports and transfer the loads of the differential to the stator housing (13). In an embodiment, a bush (7) may be provided in the assembly (100). The bush (7) may be placed in between the planetary gear carrier (6) and the sun gear (9) with a function to restrict axial movement of the sun gear (9) and also to counter the friction of two relative rotating parts, that is, the planetary gear carrier (6) and the sun gear (9). Furthermore, the assembly (100) may include an oil cover (11) and an oil seal (16) which may be adapted to provide an oil lubrication path for the differential (101).
In an embodiment, the assembly (100) may include a first washer (18) and a second washer (21) disposed within the differential (101). The first washer (18) and the second washer (21) may be adapted to counter the friction of two relative rotating parts within the differential (101). Further, the assembly (100) may include a sealing cover (20) which may be positioned within the stator housing (13) or within the rotor (15) or with the differential (101) and may be adapted to prevent oil entry in a gap created between the stator (25) and the rotor (15).
In an embodiment, the construction of the assembly (100) having the differential (101) within the stator (25) reduces the size of the electronically controlled axle (2) of the vehicle or the drive train of the vehicle. In other words, the motor [combination of stator (25) and rotor (15)], the differential (101) and the gear drive (102) are integrated with each other in a series configuration under different housing which are coupled to each other to resemble a single housing. This compact construction of the assembly (100) enhances the vehicle packaging and facilitates more space for a larger battery to be installed in the vehicle and in-turn increasing the range. Additionally, by providing the differential (101) within the stator (25) and also by providing the gear drive (102) connected to said differential, the center of gravity of the drive train may be concentrated at a required location. Further, such integrated construction of the motor and the differential (101) along with the gear drive (102) enhances the vehicle dynamics as the drive train may be concentrated at a particular location rather than being elongated over different portions of the vehicle. Also, the assembly (100) eliminates need of complex mounting structures which further aids in balancing the center of gravity, thus providing better vehicle dynamics. Further, the

configuration of the integrated motor differential assembly mitigates the chances of bending unlike the conventional e-axle assemblies.
It should be noted that in an exemplary embodiment, as seen in the Figs. 1-5 the features, construction, position and connections should not be construed as a limitation as the assembly (100) may include any other type of features, construction, position, and connections which may work with other combinations for forming the drive train or to drive the vehicle.
In an operational embodiment, upon energizing the stator (25), the rotor (15) may rotate. The rotation of the rotor (15) may be transmitted to the differential (101) as the rotor (15) may be connected to the differential housing (17). The rotation of the differential housing (17) may be transmitted to the side gears (19), as the side gears (19) are fixed to the differential housing (17). The rotation attained by the side gear (19) may be transmitted to the sun gear (9) of the gear drive (102). Further, the plurality of planetary gears (8) may receive the rotational motion from the sun gear (9) due to the meshing engagement between the sun gear (9) and the plurality of planetary gears (8). The plurality of planetary gears (8) may rotate and revolve around the sun gear (9) corresponding to rotation of the sun gear (9), thereby providing the required reduction. Furthermore, the revolution of the plurality of planetary gears (8) may be received by the planetary gear carrier (6). The planetary gear carrier (6) may be adapted to transmit the rotational motion to the axle (2) of the vehicle, which may in-turn deliver varied speed and torque requirement to the axles (2) based on rotational motion received from the differential (101).
In an embodiment, the assembly (100) is simple in construction and easy to manufacture and aids in providing a compact drive train.
It should be imperative that the integrated motor differential assembly and any other elements or features described in the above detailed description should not be considered as a limitation with respect to the figures. Rather, variation to such device and system should be considered within the scope of the detailed description.
Equivalents:

With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited

to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group.
While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope.

Referral Numerals:
Reference Number Description
100 Integrated motor differential assembly
101 Differential
102 Gear drive
1 Wheel hub
2 Axle
3 Cover member
4 Oil seal
5 Bearing
6 Planetary gear carrier
7 Bush
8 Planetary gear
9 Sun gear
10 Ring gear
11 Oil cover
12 Gear drive housing
13 Stator housing
14 Stator subassembly
15 Rotor
16 Oil seal
17 Differential housing
17a First section
17b Second section
18 First washer
19 Side gear
20 Sealing cover
21 Second washer
22 Bevel pinion

23 Cross-pin
25 Stator

We Claim:
1. An integrated motor differential assembly (100) of an electric vehicle, the assembly (100)
comprising:
a stator (25);
a rotor (15) rotatably disposed within the stator (25) and adapted to rotate upon energizing the stator (25);
a differential (101) disposed within the rotor (15) and adapted to rotate along with the rotor (15); and
a gear drive (102) coupled to each end of the differential (101) and enclosed within a gear drive housing (12) connected to the stator (25), the gear drive (102) is adapted to receive rotational motion from the differential (101) for transmitting the rotational motion at different speed ratios to axles (2) of the electric vehicle.
2. The assembly (100) as claimed in claim 1, wherein the stator (25) comprises a stator housing (13) and a stator subassembly (14) fixed to the stator housing (13).
3. The assembly (100) as claimed in claim 1, wherein the differential (101) comprises:
a differential housing (17) coupled to the rotor (15) and adapted to rotate along with the rotor (15);
a cross-pin (23) disposed within the differential housing (17); and
a bevel pinion (22) rotatably disposed at each end of the cross-pin (23).
4. The assembly (100) as claimed in claim 3, wherein the differential housing (17) comprises a first section (17a) and a second section (17b) connected with each other and disposed within the rotor (15).
5. The assembly (100) as claimed in claims 3 and 4, wherein the differential (101) comprises a side gear (19) fixed to each of the first section (17a) and the second section (17b) of the differential housing (17).

6. The assembly (100) as claimed in claim 5, wherein the side gear (19) is meshingly engaged with the bevel pinion (22), the side gear (19) is adapted to rotate corresponding to rotation of the differential housing (17).
7. The assembly (100) as claimed in claim 1, wherein the gear drive (102) is a sun-planetary gear drive.
8. The assembly (100) as claimed in claim 1, wherein the gear drive (102) comprises:
a sun gear (9) coupled to the side gear (19) of the differential (101), wherein the sun gear (9) is adapted to rotate along with the side gear (19);
plurality of planetary gears (8) meshingly engaged with the sun gear (9), wherein the plurality of planetary gears (8) are adapted rotate and revolve around the sun gear (9); and
a planetary gear carrier (6) coupled to the plurality of planetary gears (8) and adapted to rotate corresponding to revolution of the plurality of planetary gears (8) around the sun gear (9), wherein the planetary gear carrier (6) is connected to the axle (2) to rotate the axle (2) based on rotation of the differential (101).
9. The assembly (100) as claimed in claim 1, wherein the gear drive housing (12) is coupled to each end of the stator housing (13) and adapted to accommodate the gear drive (102).
10. The assembly (100) as claimed in claim 1, comprising a cover member (3) coupled to the gear drive housing (12) and adapted to receive the axle (2).