Differential device and vehicle
By placing the electromagnetic assembly radially outside the output half-shaft in the differential device, the problem of the electromagnetic clutch occupying a large axial space is solved, and a compact design of the differential device is achieved, which facilitates vehicle layout and maintenance.
Patent Information
- Application Number
- CN202520017453.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2035-01-03
AI Technical Summary
The layout of the electromagnetic clutch in the existing differential device is unreasonable, resulting in an increase in axial size, occupying a large space and affecting the layout of the entire vehicle.
The electromagnetic assembly is arranged radially outside the output half-shaft and spaced apart from the output half-shaft to form an accommodation space for installing bearings or other components, thereby reducing the space occupied by the electromagnetic assembly in the axial direction.
The axial dimension of the output half-shaft is shortened, making the differential device structure more compact and easier to arrange on the vehicle, thus reducing maintenance costs and improving space utilization efficiency.
Smart Images
Figure CN223483336U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of differential device technology, and in particular to a differential device and a vehicle. Background Technology
[0002] In related technologies, the differential is an important component of a vehicle's powertrain system. Its function is to achieve differential action when the wheels on both sides of the drive axle rotate at different speeds (such as when the vehicle is turning), preventing wheel slippage and reducing driving resistance and tire wear. Existing differentials typically have an electromagnetic clutch to achieve functions such as locking and disengaging the differential. However, the unreasonable placement of the electromagnetic clutch leads to an increase in the axial dimension of the differential, occupying a large space and thus affecting its layout in the vehicle. Utility Model Content
[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a differential speed device to solve the problem of unreasonable arrangement of electromagnetic components and large axial space occupation.
[0004] This utility model also proposes a vehicle having the above-mentioned differential device.
[0005] According to a first aspect of the present invention, a differential device includes: a differential assembly, an output half-shaft, an electromagnetic assembly, and an active toothed disc. The output half-shaft is drivenly connected to the differential assembly, and the electromagnetic assembly is connected to the active toothed disc. The electromagnetic assembly is adapted to drive the active toothed disc to move, so that the active toothed disc is drivenly connected to or disconnected from the differential assembly. The electromagnetic assembly is located radially outside the output half-shaft and is radially spaced from the output half-shaft to form a receiving space between the output half-shaft and the electromagnetic assembly.
[0006] According to the differential device of this utility model embodiment, the electromagnetic component is located on the radial outer side of the output half shaft, and the electromagnetic component and the output half shaft are arranged radially spaced to form a receiving space between the output half shaft and the electromagnetic component. The receiving space can be used to install bearings or other components. The electromagnetic component no longer occupies the axial space of the output half shaft, thereby shortening the axial dimension of the output half shaft, making the structure of the differential device more compact and facilitating its arrangement on the vehicle.
[0007] According to some embodiments of the present invention, multiple electromagnetic components are provided, and the multiple electromagnetic components are arranged at intervals on the radial outer side of the output half-shaft.
[0008] According to some embodiments of the present invention, multiple electromagnetic components are connected in parallel.
[0009] According to some embodiments of the present invention, an electromagnetic component is provided, and the electromagnetic component is sleeved on the circumferential outer side of the output half-shaft. The inner circumferential radius of the electromagnetic component is larger than the outer circumferential radius of the output half-shaft, so as to form the accommodating space between the output half-shaft and the electromagnetic component.
[0010] According to some embodiments of the present invention, the differential device further includes a plurality of half-shaft bearings, the half-shaft bearings being sleeved on the circumferential outer side of the output half-shaft, and at least one of the half-shaft bearings being located within the receiving space.
[0011] According to some embodiments of the present invention, the differential device further includes a return member, which is adapted to push the active tooth disc toward the electromagnetic component.
[0012] According to some embodiments of the present invention, the differential device further includes a connecting component, which is connected between the electromagnetic component and the active toothed disc. The connecting component includes a pusher, and the electromagnetic component includes an electromagnetic coil. One end of the pusher is connected to the active toothed disc, and the other end is used to receive the electromagnetic force of the electromagnetic coil. The pusher is adapted to move axially along the output half-shaft under the action of the electromagnetic force of the electromagnetic coil.
[0013] According to some embodiments of the present invention, the connecting assembly further includes a thrust bearing located between the pusher and the active tooth disc. The thrust bearing includes an inner ring and an outer ring, one of which is connected to the active tooth disc and the other is connected to the pusher.
[0014] According to some embodiments of the present invention, it further includes: a housing and a first end cap, the first end cap being connected to one axial side of the housing, the differential assembly being located inside the housing, the active toothed disc being disposed through the first end cap and rotating synchronously with the first end cap, the active toothed disc being adapted to move along the axial direction of the first end cap.
[0015] According to some embodiments of the present invention, the differential device further includes: a drive gear, the drive gear being located inside the housing, the drive gear surrounding the outer periphery of the housing and the first end cover, and the drive gear being fixedly connected to the housing and the first end cover.
[0016] According to some embodiments of this utility model, the differential assembly includes: a driven toothed disc, a planetary gear, and a half-shaft gear. The driven toothed disc is movably engaged with the housing. The driving toothed disc is connected to or disconnected from the driven toothed disc. The planetary gear is fixed to the inner side of the driven toothed disc. There are two half-shaft gears, which are spaced apart along the first axis. The planetary gear is located between the two half-shaft gears and meshes with both half-shaft gears. The two half-shaft gears are a first half-shaft gear and a second half-shaft gear, respectively. There are two output half-shafts, which are a first output half-shaft and a second output half-shaft, respectively. The first half-shaft gear is fixedly connected to the first output half-shaft, and the second half-shaft gear is fixedly connected to the second output half-shaft. The electromagnetic component is located radially outside one of the output half-shafts.
[0017] A vehicle according to a second aspect embodiment of the present invention includes: a differential device according to the first aspect embodiment of the present invention; a reduction gearbox, wherein the differential device is located inside the reduction gearbox, and the electromagnetic component is fixedly connected to the housing of the reduction gearbox; and wheels connected to the output half-shaft.
[0018] According to the vehicle of the present invention, by setting the above-mentioned differential device, the electromagnetic component no longer occupies the axial space of the output half shaft, thereby shortening the axial dimension of the output half shaft, making the structure of the differential device more compact and facilitating its arrangement on the vehicle.
[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0021] Figure 1 This is a cross-sectional view of a differential device according to some embodiments of the present invention;
[0022] Figure 2 This is a cross-sectional view of a differential device according to other embodiments of the present invention.
[0023] Figure label:
[0024] 100. Differential gear;
[0025] 11. Housing; 12. First end cap; 121. First output half-shaft; 13. Second end cap; 131. Second output half-shaft; 14. Accommodation space; 15. Half-shaft bearing;
[0026] 20. Differential assembly; 21. Driven gear insert; 211. Second engagement gear; 22. Planetary gear; 231. First half-shaft gear; 232. Second half-shaft gear;
[0027] 30. Active tooth disc; 31. First mating tooth;
[0028] 40. Electromagnetic components; 41. Electromagnetic coils; 42. Electromagnetic housing;
[0029] 50. Drive gear;
[0030] 60. Connecting assembly; 611. Push rod; 612. Push ring; 62. Pressure plate; 63. Gasket; 64. Thrust bearing. Detailed Implementation
[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.
[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.
[0033] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0034] The following is for reference. Figure 1-Figure 2 Description of a differential device 100 according to an embodiment of the present invention.
[0035] According to the first aspect of the present invention, the differential device 100 enables the wheels at the left and right ends of the vehicle to rotate at different speeds. When the vehicle turns or travels on uneven roads, the left and right wheels roll at different speeds, thereby ensuring the normal driving of the vehicle.
[0036] The differential device 100 includes a differential assembly 20, an output half-shaft, a drive jaw clutch 30, and an electromagnetic assembly 40. The output half-shaft is drivenly connected to the differential assembly 20, and the electromagnetic assembly 40 is connected to the drive jaw clutch 30 and adapted to drive the drive jaw clutch 30 to move, so that the drive jaw clutch 30 is drivenly connected to or disconnected from the differential assembly 20. The electromagnetic assembly 40 is located radially outside the output half-shaft and is spaced apart from the output half-shaft in the radial direction to form a receiving space 14 between the output half-shaft and the electromagnetic assembly 40.
[0037] The output half-shaft is a cylinder with radial and axial directions. The axial direction of the output half-shaft is the extension direction of the rotation center axis (see reference). Figure 1-Figure 2 The X direction of the output half-shaft is the straight line along the diameter or radius of the output half-shaft, and the radial direction of the output half-shaft is perpendicular to the axial direction of the output half-shaft; the radial outer direction of the output half-shaft is the direction away from the central axis of the output half-shaft.
[0038] In related technologies, the electromagnetic component 4 of the differential gear 100 is typically mounted on the output half-shaft, occupying the bearing mounting position. This necessitates increasing the axial length of the output half-shaft to accommodate the bearing, resulting in an increase in the axial dimension of the differential gear 100 and a larger space requirement, affecting its placement in the vehicle. In this application, however, the electromagnetic component 40 is located radially outside the output half-shaft, and the electromagnetic component 40 and the output half-shaft are radially spaced to form a receiving space 14 between the output half-shaft and the electromagnetic component 40. This receiving space 14 can be used to install bearings or other components. The electromagnetic component 40 no longer occupies the axial space of the output half-shaft, thereby shortening the axial dimension of the output half-shaft and making the differential gear 100 more compact, facilitating its placement in the vehicle.
[0039] According to some embodiments of the present invention, referring to Figure 1Multiple electromagnetic components 40 are provided, and these components are arranged at intervals on the radially outer side of the output half-shaft. These components can apply a thrust to the active jaw disc 30 in the circumferential direction. The size of each individual electromagnetic component 40 can be relatively small, thereby increasing the radial distance between the electromagnetic component 40 and the output half-shaft within a limited space, thus allowing for a larger accommodating space. While reducing the size of the electromagnetic components 40, to ensure that the electromagnetic force output by each component 40 is not reduced, multiple electromagnetic components 40 are provided, arranged at intervals along the circumferential direction of the output half-shaft, without occupying space relative to the output half-shaft in the radial direction.
[0040] As an example, refer to Figure 1 There are two electromagnetic components 40, which are located on the radial sides of the output half shaft respectively. In the case of limited space, this layout will not occupy too much space in the radial direction of the output half shaft. With the reasonable arrangement of the two electromagnetic components 40, the two electromagnetic components 40 can also better drive the active tooth disc 30 to move.
[0041] According to some embodiments of the present invention, referring to Figure 1 Multiple electromagnetic components 40 are connected in parallel and are independent of each other. If one electromagnetic component 40 fails, the other electromagnetic components 40 can still work and drive the active tooth disc 30 to move. Moreover, only the corresponding electromagnetic component 40 needs to be replaced, which can reduce maintenance costs.
[0042] According to some embodiments of the present invention, referring to Figure 2 An electromagnetic component 40 is provided, which is sleeved on the outer circumferential side of the output half-shaft. The inner circumferential radius of the electromagnetic component 40 is larger than the outer circumferential radius of the output half-shaft, so as to form a receiving space 14 between the output half-shaft and the electromagnetic component. The circumferential direction of the output half-shaft refers to the circular direction of the output half-shaft, and the outer circumferential side of the output half-shaft is the side away from the circumferential surface of the output half-shaft. The electromagnetic component 40 has few components and is easy to install, making the movement of the active dental disc 30 smoother and more stable when driven by the electromagnetic component 40.
[0043] According to some embodiments of the present invention, referring to Figure 1-Figure 2The differential 100 also includes multiple half-shaft bearings 15, which are sleeved on the circumferential outer side of the output half-shaft. At least one half-shaft bearing 15 is located within a receiving space 14; either one or multiple half-shaft bearings 15 may be located within the receiving space 14. The output half-shaft is used to connect to the wheel, and the half-shaft bearings 15 provide rotatable support force when the output half-shaft rotates. Placing at least one half-shaft bearing 15 within the receiving space 14 saves on the axial dimension of the output half-shaft, making the differential 100 more compact.
[0044] According to some embodiments of the present invention, referring to Figure 1-Figure 2 The differential gear 100 also includes a return member (not shown in the attached figure), which is adapted to push the active jaw clutch 30 toward the electromagnetic component 40. When the electromagnetic component 40 is de-energized, the return member drives the active jaw clutch 30 to reset, thereby disconnecting the active jaw clutch 30 from the differential gear 20. For example, the return member can be an elastic element such as a spring.
[0045] According to some embodiments of the present invention, referring to Figure 1-Figure 2 The differential gear also includes a connecting assembly 60, which connects the electromagnetic assembly 40 and the active jaw clutch 30. The connecting assembly 60 includes a pusher, and the electromagnetic assembly 40 includes an electromagnetic coil 41. One end of the pusher is connected to the active jaw clutch 30, and the other end receives the electromagnetic force from the electromagnetic coil 41. Under the action of the electromagnetic force from the electromagnetic coil 41, the pusher moves axially along the output half-shaft, thereby driving the active jaw clutch 30 to move, specifically, driving the active jaw clutch 30 to move axially along the output half-shaft. Precise adjustment of the pusher's movement can be achieved through precise control of the current in the electromagnetic coil 41.
[0046] Reference Figure 1 When multiple electromagnetic components 40 are provided, the pushing member is a push rod 611. The push rod 611 corresponds one-to-one with the multiple electromagnetic components 40 and is movably located within the corresponding electromagnetic coil 41; see reference. Figure 2 When the electromagnetic component 40 is provided, the pushing member is the push ring 612. The circumferential surface of the push ring 612 and the electromagnetic coil 41 are subjected to the pushing force of the electromagnetic coil 41, and the force is balanced and stable.
[0047] According to some embodiments of the present invention, referring to Figure 1-Figure 2The connecting assembly 60 also includes a thrust bearing 64, which is located between the pusher and the active jaw clutch 30. The thrust bearing 64 includes an inner ring and an outer ring, one of which is connected to the active jaw clutch 30, and the other is connected to the pusher. Alternatively, the inner ring of the thrust bearing 64 can be connected to the active jaw clutch 30, and the outer ring can be connected to the pusher; or the outer ring can be connected to the active jaw clutch 30, and the inner ring can be connected to the pusher. When the active jaw clutch 30 is connected to the differential assembly 20, the active jaw clutch 30 rotates. The thrust bearing 64, positioned between the pusher and the active jaw clutch 30, allows relative rotation between its inner and outer rings, ensuring that the active jaw clutch 30 rotates without causing the pusher to rotate.
[0048] In one embodiment, a gasket 63 is provided between the thrust bearing 64 and the active jaw clutch 30 to avoid a rigid connection between them. The connecting assembly 60 also includes a pressure plate 62, which is located between the thrust bearing 64 and the pusher. The pressure plate 62 can bridge the thrust bearing 64 and the pusher, and ensure the accuracy of the force transmission path from the pusher to the thrust bearing 64 and then to the active jaw clutch 30.
[0049] According to some embodiments of the present invention, referring to Figure 1-Figure 2 The differential device 100 includes a housing 11 and a first end cover 12. The housing 11 is the outer housing of the differential device 100. The first end cover 12 is connected to one axial side of the housing 11. The differential assembly 20 is located inside the housing 11. The active jaw clutch 30 passes through the first end cover 12 and rotates synchronously with the first end cover 12. The active jaw clutch 30 is adapted to move along the axial direction of the first end cover 12 to switch the engagement and disengagement states between the active jaw clutch 30 and the differential assembly 20. Specifically, the aforementioned return member is located between the first end cover 12 and the thrust bearing.
[0050] For example, the first end cap 12 is provided with a first through hole and a second through hole spaced apart. The first through hole surrounds the circumferential outer side of the second through hole. The active tooth insert 30 passes through the first through hole, and the second through hole is used for the output half shaft to pass through.
[0051] According to some embodiments of the present invention, referring to Figure 1-Figure 2The differential device 100 further includes a drive gear 50, which surrounds the outer periphery of the housing 11 and the first end cover 12 and is fixedly connected to them. The drive gear 50 is connected to a power source, which can be an electric motor or an engine. The power output from the power source is transmitted to the drive gear 50, causing it to rotate, which in turn drives the housing 11 and the first end cover 12 to rotate. When the first end cover 12 rotates, it can drive the drive jaw disc 30 to rotate. When the drive jaw disc 30 is connected to the differential assembly 20, the power is further transmitted to the differential assembly 20 and output through the output half-shaft. When the drive jaw disc 30 is disconnected from the differential assembly 20, the power transmission between the power source and the output half-shaft is interrupted. Since the radius of the drive gear 50 is usually large, it occupies a large radial space. Therefore, by placing the electromagnetic component 40 on the radial outer side of the output half shaft, the axial space of the output half shaft can be saved by utilizing the extra radial space in the differential device 100, making the overall structure of the differential device 100 more compact and facilitating its placement on the vehicle.
[0052] According to some embodiments of the present invention, referring to Figure 1-Figure 2 The differential assembly 20 includes a driven toothed disc 21, a planetary gear 22, and a half-shaft gear. The driven toothed disc 21 is movably engaged with the housing 11. When the driving toothed disc 30 is disconnected from the driven toothed disc 21, the driven toothed disc 21 can rotate relative to the housing 11. When the driven toothed disc 21 is connected to the driving toothed disc 30, the driven toothed disc 21 rotates synchronously with the housing 11, the first end cover 12, and the driving gear 50.
[0053] In some embodiments, the active dental insert 30 has a first engagement tooth 31, and the driven dental insert 21 has a second engagement tooth 211 disposed toward the first engagement tooth 31. When the driven dental insert 21 is connected to the active dental insert 30 in a transmission manner, the first engagement tooth 31 and the second engagement tooth 211 engage.
[0054] The driven gear disc 21 is a hollow gear disc. The planetary gear 22 is fixed to the inner side of the driven gear disc 21. There are two half-shaft gears, which are spaced apart along the axial direction of the first housing 11. The planetary gear 22 is located between the two half-shaft gears and meshes with both half-shaft gears. The two half-shaft gears are the first half-shaft gear 231 and the second half-shaft gear 232. There are two output half-shafts, which are the first output half-shaft 121 and the second output half-shaft 131. The first half-shaft gear 231 is fixedly connected to the first output half-shaft 121, and the second half-shaft gear 232 is fixedly connected to the second output half-shaft 131. The first output half-shaft 121 passes through the second through hole of the first end cover 12. The electromagnetic component 40 is located radially outside one of the output half-shafts.
[0055] When the drive gear 50 rotates, it drives the housing 11 and the first end cover 12 to rotate synchronously. The first end cover 12 drives the drive jaw disc 30 to rotate. When the drive jaw disc 30 is engaged with the driven jaw disc 21, it drives the driven jaw disc 21 to rotate. When the driven jaw disc 21 rotates, it drives the two planetary gears 22 to rotate. When the two planetary gears 22 rotate, they drive the first half-shaft gear 231 and the second half-shaft gear 232 to rotate, respectively. The first half-shaft gear 231 and the second half-shaft gear 232 further drive the first output half-shaft 121 and the second output half-shaft 131 to rotate, respectively, forming differential motion. When the drive jaw disc 30 is disconnected from the driven jaw disc 21, the power transmission is interrupted. The output half-shaft reverses and does not drive the drive gear 50 to rotate, thus preventing the reverse drag of the power source, reducing drag losses and improving economy.
[0056] In one embodiment, the differential device 100 further includes a second end cap 13, which is connected to the side of the housing 11 away from the first end cap 12. The second end cap 13 is provided with a third through hole, through which the second output half shaft 131 extends.
[0057] A vehicle according to a second aspect embodiment of the present invention includes: a differential device 100, a reduction gearbox, and wheels as described in the first aspect embodiment of the present invention. The differential device 100 is located inside the reduction gearbox, and the wheels are connected to the output half-shaft. An electromagnetic component 40 is fixedly connected to the housing of the reduction gearbox. Specifically, the electromagnetic component 40 further includes an electromagnetic housing, an electromagnetic coil 41 is fixed inside the electromagnetic housing 42, and the electromagnetic housing 42 is fixedly connected to the housing of the reduction gearbox. The output half-shaft is adapted to pass through the reduction gearbox and connect to the wheels.
[0058] According to the vehicle of the present utility model embodiment, by setting the above-mentioned differential device 100, the electromagnetic component 40 no longer occupies the axial space of the output half shaft, thereby shortening the axial dimension of the output half shaft, making the structure of the differential device more compact and facilitating its arrangement on the vehicle.
[0059] Throughout this specification, references to terms such as "some embodiments," "optionally," "further," or "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A differential device, characterized in that, include: The system includes a differential assembly, an output half-shaft, an electromagnetic assembly, and an active toothed disc. The output half-shaft is connected to the differential assembly, and the electromagnetic assembly is connected to the active toothed disc. The electromagnetic assembly is adapted to drive the active toothed disc to move, so that the active toothed disc is connected to or disconnected from the differential assembly. The electromagnetic component is located radially outside the output half-shaft and is spaced apart from the output half-shaft in the radial direction to form a receiving space between the output half-shaft and the electromagnetic component.
2. The differential device according to claim 1, characterized in that, The electromagnetic components are provided in multiple quantities, and the multiple electromagnetic components are arranged at intervals on the radial outer side of the output half shaft.
3. The differential device according to claim 2, characterized in that, The electromagnetic components are connected in parallel.
4. The differential device according to claim 1, characterized in that, The electromagnetic component is provided and is sleeved on the circumferential outer side of the output half-shaft. The inner circumferential radius of the electromagnetic component is larger than the outer circumferential radius of the output half-shaft, so as to form the accommodating space between the output half-shaft and the electromagnetic component.
5. The differential device according to claim 1, characterized in that, The differential device also includes multiple half-shaft bearings, which are sleeved on the circumferential outer side of the output half-shaft, and at least one of the half-shaft bearings is located within the receiving space.
6. The differential device according to claim 1, characterized in that, The differential device also includes a return member adapted to push the active tooth disc toward the electromagnetic component.
7. The differential device according to claim 1, characterized in that, The differential device further includes a connecting assembly connected between the electromagnetic assembly and the active toothed disc. The connecting assembly includes a pusher, and the electromagnetic assembly includes an electromagnetic coil. One end of the pusher is connected to the active toothed disc, and the other end is used to receive the electromagnetic force of the electromagnetic coil. The pusher is adapted to move axially along the output half-shaft under the action of the electromagnetic force of the electromagnetic coil.
8. The differential device according to claim 7, characterized in that, The connecting assembly further includes a thrust bearing located between the pusher and the active dental disc. The thrust bearing includes an inner ring and an outer ring, one of which is connected to the active dental disc and the other is connected to the pusher.
9. The differential device according to claim 1, characterized in that, Also includes: The housing and a first end cap are connected to one axial side of the housing. The differential assembly is located inside the housing. The active toothed disc passes through the first end cap and rotates synchronously with the first end cap. The active toothed disc is adapted to move along the axial direction of the first end cap.
10. The differential device according to claim 9, characterized in that, Also includes: A drive gear surrounds the outer periphery of the housing and the first end cover, and is fixedly connected to the housing and the first end cover.
11. The differential device according to claim 10, characterized in that, The differential assembly includes: a driven toothed disc, a planetary gear, and a half-shaft gear. The driven toothed disc is movably engaged with the housing. The driving toothed disc is connected to or disconnected from the driven toothed disc. The planetary gear is fixed to the inner side of the driven toothed disc. There are two half-shaft gears, which are spaced apart along the axial direction of the housing. The planetary gear is located between the two half-shaft gears and meshes with both half-shaft gears. The two half-shaft gears are a first half-shaft gear and a second half-shaft gear, respectively. There are two output half-shafts, which are a first output half-shaft and a second output half-shaft, respectively. The first half-shaft gear is fixedly connected to the first output half-shaft, and the second half-shaft gear is fixedly connected to the second output half-shaft. The electromagnetic component is located radially outside one of the output half-shafts.
12. A vehicle, characterized in that, include: The differential device according to any one of claims 1-11; A gearbox, wherein the differential device is located inside the gearbox, and the electromagnetic component is fixedly connected to the housing of the gearbox; A wheel, which is connected to the output half-shaft.