Magnetic limited slip differential

Abstract

The present application relates to a magnetic limited slip differential, characterized by comprising: a fixed electromagnetic coil having a magnetic field region formed therein; the control piece is connected with the fixed electromagnetic coil and is used for starting the fixed electromagnetic coil to generate a magnetic induction line in the magnetic field area; the differential shell penetrates through the magnetic field area, the differential shell and the electromagnetic coil are coaxially arranged, and a conductive path is arranged on the differential shell in the peripheral direction of the differential shell; the gear mechanism comprises a fixed shaft, a first gear set and a second gear set, the first gear set and the second gear set are meshed with each other, the fixed shaft passes through and is perpendicular to the central axis of the differential shell, the two ends of the fixed shaft are fixed to the differential shell, the fixed shaft is movably sleeved with the first gear set, the second gear set comprises two half-axle gears, and the rotation directions of the two half-axle gears around the central axis of the differential shell are opposite; and the electromagnetic cutting assembly is arranged in the fixing shaft in a sleeved mode, the two ends of the electromagnetic cutting assembly communicate with the conductive path, and the problems that in the related technology, a mechanical locking structure is low in response speed, rigidity loss exists, and the driving smoothness is easily affected are solved.

Description

Technical Field

[0001] The present application relates to the field of differentials, and in particular to a magnetic limited slip differential. Background Art

[0002] The differential is an indispensable core component in the vehicle's transmission system. Its core function is to allow the drive wheels to rotate at different speeds when turning, thereby compensating for the difference in travel distance between the inner and outer wheels.

[0003] Currently, most differentials use mechanical mechanisms such as friction plates or clutches to limit pulley speed. However, when one wheel slips, all power flows to the idler wheel. Relying on mechanical mechanisms to limit pulley speed is slow to respond and can affect driving comfort due to mechanical impact. On snowy roads, where wheels are prone to slipping, the mechanical locking mechanism can directly lock the wheel during the slip-limiting process, affecting normal driving. Furthermore, mechanical locking can experience a certain degree of rigidity loss over time, requiring frequent maintenance and causing significant inconvenience for users. Summary of the Invention

[0004] The embodiment of the present application provides a magnetic limited slip differential to solve the problems in the related art that the mechanical locking structure has a slow response speed and has a rigidity loss that easily affects driving smoothness.

[0005] An embodiment of the present application provides a magnetic limited slip differential, comprising: A fixed electromagnetic coil has a magnetic field region formed inside it; a control member connected to the fixed electromagnetic coil and configured to activate the fixed electromagnetic coil to generate magnetic flux lines in the magnetic field region; a differential housing passing through the magnetic field region and being coaxially arranged with the electromagnetic coil, wherein the differential housing is provided with a conductive path along its circumference; A gear mechanism comprising a fixed shaft and a first gear set and a second gear set meshing with each other, wherein the fixed shaft passes through and is perpendicular to the central axis of the differential housing and is fixed to the differential housing at both ends, the first gear set being movably sleeved on the fixed shaft, and the second gear set comprising two side gears located on either side of the fixed shaft along the central axis of the differential housing, the two side gears rotating in opposite directions about the central axis of the differential housing; And, an electromagnetic cutting component is sleeved in the fixed shaft, and two ends of the electromagnetic cutting component are connected with the conductive path.

[0006] In one embodiment, the electromagnetic cutting assembly comprises: an electromagnet, which is disposed in the fixed shaft and passes through the fixed shaft; Also, two conductive members are respectively arranged at both ends of the electromagnet in the length direction, and one end of the conductive member away from the electromagnet is connected to the conductive path to form a current path.

[0007] In one embodiment, the conductive member includes a conductive brush, two ends of which are respectively connected to the electromagnet and the conductive path.

[0008] In one embodiment, the first gear set includes two planetary gears, which are respectively mounted on both ends of the fixed shaft in the length direction. The planetary gears are simultaneously engaged with the two half-shaft gears and abut against the inner wall of the differential housing.

[0009] In one embodiment, a magnetic limited slip differential further comprises: A planetary gasket is sleeved on the fixed shaft and located between the planetary gear and the differential housing.

[0010] In one embodiment, a magnetic limited slip differential further comprises: The half-shaft gasket is arranged on the half-shaft gears and is located at one end of the two half-shaft gears that is away from each other.

[0011] In one embodiment, a magnetic limited slip differential further comprises: A fixing pin passes through the fixing shaft and is connected to the differential housing.

[0012] In one embodiment, a magnetic limited slip differential further comprises: The electric sensor is sleeved on the differential housing along the peripheral direction of the differential housing to form a conductive path in the peripheral direction of the differential housing.

[0013] In one embodiment, the differential housing, the fixed shaft, and the gear mechanism are all coated with an insulating coating.

[0014] In one embodiment, an observation window is provided on the surface of the differential housing corresponding to the gear mechanism.

[0015] The technical solution provided by this application provides the following beneficial effects: a fixed electromagnetic coil is activated by a control element, generating magnetic flux lines within the magnetic field region. Two half-shaft gears in the second gear set within the gear mechanism connect the two wheels in the vehicle width direction. The two half-shaft gears rotate in opposite directions about the center axis of the differential housing. When the two wheels slip, a differential speed is generated between the two half-shaft gears. At this time, the differential housing is driven by the first gear set to rotate about its center axis within the magnetic field region. The fixed shaft passes through and is perpendicular to the center axis of the differential housing. The electromagnetic cutting assembly is disposed within the differential housing. Therefore, when the differential housing rotates about its center axis, the electromagnetic cutting assembly cuts the magnetic flux lines within the magnetic field region, generating an electric current through the electromagnetic cutting assembly. This current is then directed into the conductive path to generate a slip-blocking magnetic force in the opposite direction of the movement of the first gear set, thereby hindering the rotation of the first gear set and achieving wheel slip limitation. The slip-blocking magnetic force hinders the rotation of the first gear set, thereby preventing direct mechanical contact with the gear mechanism during the slip-limiting process, thereby reducing the rigidity loss of the first gear set during the slip-limiting process. At the same time, the overall structure is simple. After the fixed electromagnetic coil is energized, the electromagnetic cutting component can cut the magnetic lines of force to generate anti-slip magnetic force with a fast response speed. Moreover, since the generation of the anti-slip magnetic force is related to the rotation speed of the differential housing, the faster the differential housing rotates, the faster the electromagnetic cutting component arranged on the differential housing cuts the magnetic lines of force, and the greater the obstructive magnetic force generated, which plays a role in stabilizing the slip, and solves the problem in the related technology that the mechanical locking structure has a slow response speed and there is a rigidity loss that easily affects the driving smoothness.

[0016] An embodiment of the present application provides a magnetic limited-slip differential. Since an electromagnetic cutting assembly is provided on the differential housing, when the vehicle slips, the differential housing can drive the electromagnetic cutting assembly to rotate in a fixed electromagnetic coil, thereby cutting the magnetic lines of force to generate anti-slip magnetic force. The anti-slip magnetic force can limit the rotation of the first gear set. Therefore, while reducing the rigidity loss of the first gear set, it can stably limit the rotation of the differential housing, thereby playing the role of limiting the slip of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 An exploded diagram of the structure of a magnetic limited slip differential provided in an embodiment of the present application; Figure 2 This is a structural diagram of a magnetic limited slip differential provided in an embodiment of the present application.

[0019] In the figure: 1. Fixed electromagnetic coil; 2. Differential housing; 21. First gear set; 211. Planetary gear; 212. Planetary gasket; 22. Fixed shaft; 23. Second gear set; 231. Axle gear; 232. Axle gasket; 24. Fixed pin; 25. Electric sensor; 26. Observation window; 3. Electromagnet; 31. Conductive part; 311. Conductive brush. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] The embodiments of the present application provide a magnetic limited slip differential, which can solve the problems in the related art of slow response of the mechanical locking structure and rigidity loss that easily affects driving smoothness.

[0022] Reference Figure 1 and Figure 2 The present invention provides a magnetic limited-slip differential, comprising a fixed electromagnetic coil 1, a control component, a differential housing 2, a gear mechanism, and an electromagnetic cutting assembly. A magnetic field region is formed within the fixed electromagnetic coil 1. During installation, the fixed electromagnetic coil 1 is bolted to a fixed structure within the vehicle. The control component is connected to the fixed electromagnetic coil 1 and is used to activate the fixed electromagnetic coil 1, so that magnetic flux lines are generated within the magnetic field region when the fixed electromagnetic coil 1 is energized. The differential housing 2 extends through the magnetic field region and is coaxially arranged with the electromagnetic coil. A conductive path is provided along the outer circumference of the differential housing 2. The gear mechanism is located within the differential housing 2 and comprises a fixed shaft 22 and a first gear set 21 and a second gear set 23 that mesh with each other. The fixed shaft 22 passes through and is perpendicular to the central axis of the differential housing 2. Both ends of the fixed shaft 22 are fixed to the differential housing 2. The electromagnetic cutting assembly is sleeved within the fixed shaft 22, with both ends connected to the conductive path. The second gear set 23 includes two half-shaft gears 231 located on both sides of the fixed shaft 22 along the central axis of the differential housing 2. The two half-shaft gears 231 are used to connect two wheels located on the same horizontal line in the vehicle width direction. The two half-shaft gears 231 rotate in opposite directions around the central axis of the differential housing 2. The first gear set 21 is engaged with the two half-shaft gears 231 and is pressed against the inside of the differential housing 2 by the two half-shaft gears 231.

[0023] During normal vehicle operation, the two side gears 231 rotate in opposite directions. At this time, the wheels connected to the two side gears 231 rotate at the same speed. The control unit does not activate the fixed electromagnetic coil 1. The first gear set 21, meshing with the two side gears 231, rotates about the fixed shaft 22 on the differential case 2. The control unit does not activate the fixed electromagnetic coil 1. When the vehicle encounters rain, snow, or complex road conditions with multiple turns, the wheels are prone to slipping. Differential rotation occurs between the two wheels located on the same horizontal line across the vehicle width, causing the two side gears 231 to rotate at different speeds. This, in turn, drives the differential case 2 to rotate about its central axis via the first gear set 21. The control unit activates the fixed electromagnetic coil 1, causing the fixed electromagnetic coil 1 to generate magnetic flux lines within the magnetic field region. Since the fixed shaft 22 passes through and is perpendicular to the central axis of the differential housing 2, when the fixed shaft 22 rotates with the differential housing 2, the electromagnetic cutting assembly mounted within the fixed shaft 22 will simultaneously cut the magnetic flux lines within the magnetic field region, thereby generating an electric current. The two ends of the electromagnetic cutting assembly are connected to the conductive path, thereby generating a complete circuit in the peripheral direction of the differential housing 2. A slip-resistant magnetic force opposite to the direction of movement of the first gear set 21 is generated at both ends of the electromagnetic cutting assembly, inhibiting the rotation of the first gear set 21 and thus limiting wheel slip. The faster the speed of the differential housing 2, the faster the electromagnetic cutting assembly within the fixed shaft 22 cuts the magnetic flux lines, and the greater the slip-resistant magnetic force generated, and the better the effect of inhibiting vehicle slip. The slip-resistant magnetic force can be automatically generated after the control unit is activated, and the response speed is fast. There is no connection between the differential housing 2 and the fixed electromagnetic coil 1. The rotation of the first gear set 21 is suppressed only by the anti-slip magnetic force, which avoids the rigidity loss of the first gear set 21 caused by mechanical locking, plays a role in stable limited slip, and solves the problem in related technologies that the mechanical locking structure has a slow response speed and rigidity loss that easily affects driving smoothness.

[0024] In one embodiment of the present application, a control unit is connected to the vehicle control system and manually activated by the user, thereby implementing the vehicle's limited slip function. While driving, the user can selectively activate the control unit based on road conditions and driving environment. When the first gear set 21 drives the differential case 2 via the fixed shaft 22, an anti-slip magnetic force is immediately generated, providing limited slip protection for the vehicle. In other embodiments of the present application, speed meters can be installed on the two half-shaft gears 231, and a differential threshold can be preset within the control unit. When the speed of the two half-shaft gears 231 exceeds the differential threshold, the control unit automatically activates the fixed electromagnetic coil 1 to provide limited slip protection for the vehicle, further enhancing the vehicle's automated limited slip function.

[0025] Reference Figure 1In one embodiment of the present application, the electromagnetic cutting assembly includes an electromagnet 3 and two conductive members 31. The electromagnet 3 is inserted into the fixed shaft 22 and extends out from the fixed shaft 22. When the fixed shaft 22 rotates with the differential housing 2, the electromagnet 3 cuts the magnetic flux lines in the magnetic field region, thereby generating current in the electromagnet 3. The two conductive members 31 are respectively arranged at both ends of the length direction of the electromagnet 3, and the end of the conductive member 31 away from the electromagnet 3 is connected to the conductive path to form a current path. When the electromagnet 3 performs the magnetic flux line cutting movement, a unidirectional current is generated in its own length direction, and flows along the conductive member 31 to the conductive path to form a closed circuit, thereby generating anti-slip magnetic force at both ends of its own length direction, thereby playing an adsorption role on the first gear set 21 to suppress the rotation of the first gear set 21 and achieve anti-slip protection for the vehicle.

[0026] More specifically, in an embodiment of the present application, the conductive member 31 is specifically selected from a conductive brush 311. A fixing groove for fixing the conductive brush 311 is provided on the surface of the differential housing 2 so that the conductive brush 311 is embedded in the fixing groove. The two ends of the conductive brush 311 in the length direction are respectively connected to the electromagnet 3 and the conductive path, which plays the role of transmitting current. The surface of the differential housing 2 is sleeved with an electric sensor 25 along its circumferential direction. The electric sensor 25 is connected to the conductive brush 311 so that the electric sensor 25 forms a conductive path, and combines the conductive brush 311 and the electromagnet 3 to form a complete closed circuit. A fixing pin 24 is specifically selected to connect the fixed shaft 22 and the differential housing 2. The fixing pin 24 passes through the fixed shaft 22 and the electromagnet 3 inside the fixed shaft 22 in the length direction of the differential housing 2 at the same time, and is connected to the differential housing 2, achieving the fixed installation of the electromagnet 3 through a simple mechanical structure. In other embodiments of the present application, the conductive member 31 and the conductive path can also be selected from other conductive elements that are easy to install.

[0027] Electrical sensor 25 utilizes a highly conductive copper substrate, combined with a spirally wound structure to optimize electromagnetic distribution and ensure stable current transmission along its axial direction. Furthermore, the contact surface between electromagnet 3 and conductive brush 311 has been specially treated. A graphite-copper composite material is used as the base of conductive brush 311, and the surface is plated with a highly conductive silver alloy layer. This ensures stable conduction with low contact resistance while also reducing the risk of poor contact due to oxidation due to the chemical inertness of silver. This composite structure significantly improves the reliability of current transmission and reduces power fluctuations caused by wear or corrosion on the contact surface.

[0028] Furthermore, in order to ensure the unidirectional flow of current between the electrical sensor 25, the electromagnet 3 and the conductive brush 311, the surface of the differential housing 2, the surface of the fixed shaft 22 and the surface of the gear mechanism are coated with an insulating coating to ensure the unidirectional flow of current and reduce the possibility of current flowing to other structures. In the embodiment of the present application, the insulating coating specifically uses an epoxy resin coating. The epoxy resin coating is a thermosetting polymer material with an epoxy group as the skeleton. After curing, it forms a dense cross-linked network with excellent dielectric strength and chemical corrosion resistance. It is a relatively excellent insulating coating option. The fixed shaft 22 can use a plasma-deposited silicon nitride coating. This material has both the insulating properties of ceramics and the wear resistance of metals. Its dense amorphous structure can effectively isolate current leakage, and its smooth surface reduces friction loss with the gear mechanism. The gear mechanism is protected as a whole by a ceramic-based composite insulating material. This type of material has self-lubricating properties while maintaining high insulation, significantly reducing the wear caused by direct contact between metal parts and extending the service life of the mechanical structure. In terms of material production, the differential shell 2 can be made of polyimide resin, which has excellent dielectric properties and heat stability. The aromatic rings and imide groups in its molecular structure give the material extremely high anti-puncture ability and long-term temperature resistance, and it can maintain a stable insulation state even in extreme high or low temperature environments.

[0029] To facilitate meshing between the first gear set 21 and the second gear set 23 and conserve mounting space, the first gear set 21 includes two planetary gears 211, each mounted on either end of the fixed shaft 22. Each planetary gear 211 simultaneously meshes with two side gears 231, which are abutted against the inner wall of the differential housing 2 by the side gears 231. During normal vehicle operation, the side gears 231 rotate in opposite directions but at the same speed, rotating around the axis of the fixed shaft 22. When the vehicle slips, the side gears 231 rotate in opposite directions but at different speeds. The different rotational speeds of the two planetary gears 211 drive the differential housing 2 to rotate around its central axis via the fixed shaft 22. This simple meshing structure facilitates assembly of the first and second gear sets 21 and 23 within the differential housing 2.

[0030] Furthermore, since the two opposing surfaces of the planetary gears 211 abut against the inner wall of the differential housing 2, to reduce wear on the inner wall of the differential housing 2 and the surfaces of the planetary gears 211 during rotation, planetary washers 212 are disposed between the planetary gears 211 and the differential housing 2. The planetary washers 212 are sleeved on the fixed shaft 22. While protecting the surfaces of the planetary gears 211 and the inner wall of the differential housing 2, they also further enhance the tightness of the abutment of the planetary gears 211, making them more convenient to use. Furthermore, during assembly of the second gear set 23, the ends of the two side gears 231 that are spaced apart from each other will also rotate relative to the inner wall of the differential housing 2. To protect the two side gears 231 and enhance their tightness of installation, the side gears 231 are also provided with side washers 232. The side washers 232 are specifically disposed at the ends of the two side gears 231 that are spaced apart from each other and abut against the inner wall of the differential housing 2.

[0031] In actual manufacturing, the planetary gaskets 212 and the axle gaskets 232 can be made from EPDM rubber. The synergistic effect of the non-polar vinyl segments in its molecular structure and the polar third monomer (acrylonitrile) ensures that the planetary gaskets 212 and axle gaskets 232 maintain a high elastic modulus while exhibiting excellent aging resistance. In other embodiments, the planetary gaskets 212 and axle gaskets 232 can also be made from other materials, such as natural rubber, nitrile rubber, fluororubber, and silicone rubber. Natural rubber has a higher elastic modulus; nitrile rubber has a higher polar acrylonitrile content and better oil resistance; fluororubber has excellent high temperature and chemical resistance; and silicone rubber has a wider temperature range. In actual manufacturing, the materials for the planetary gaskets 212 and axle gaskets 232 can be flexibly selected based on actual operating conditions.

[0032] Because the first and second gear sets 21 and 23 are subject to mechanical wear during prolonged engagement due to the surrounding environment and their own materials, regular lubrication and maintenance are required at the meshing point between the first and second gear sets 21 and 23. To facilitate observation of wear and lubrication during subsequent maintenance, an observation window 26 is provided on the surface of the differential housing 2, corresponding to the meshing point between the first and second gear sets 21 and 23. This allows maintenance personnel to visually assess the wear pattern of the gear tooth surfaces, such as early root cracks or later tooth surface adhesion marks, thereby accurately determining the grease replacement cycle and facilitating subsequent regular maintenance. The choice of lubrication method should be based on the material characteristics of the first and second gear sets 21 and 23. For carbon steel gears, extreme pressure grease should be prioritized to mitigate the risk of metal-to-metal cold welding. For stainless steel gears, a highly resistant synthetic ester lubricant can be used to prevent corrosion of the tooth surfaces by corrosive byproducts.

[0033] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0035] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A magnetic limited slip differential, characterized in that: It includes: A fixed electromagnetic coil (1) having a magnetic field region formed therein; A control member connected to the fixed electromagnetic coil (1) and used to turn on the fixed electromagnetic coil (1) to generate magnetic flux lines in the magnetic field region; A differential housing (2) passes through the magnetic field region and is coaxially arranged with the electromagnetic coil, wherein a conductive path is provided on the differential housing (2) along its peripheral direction; A gear mechanism comprising a fixed shaft (22) and a first gear set (21) and a second gear set (23) meshing with each other, wherein the fixed shaft (22) passes through and is perpendicular to the central axis of the differential housing (2) and is fixed to the differential housing (2) at both ends, the first gear set (21) being movably sleeved on the fixed shaft (22), and the second gear set (23) comprising two half-shaft gears (231) respectively located on both sides of the fixed shaft (22) along the central axis of the differential housing (2), the two half-shaft gears (231) rotating in opposite directions around the central axis of the differential housing (2); And, an electromagnetic cutting component is sleeved in the fixed shaft (22), and both ends of the electromagnetic cutting component are connected to the conductive path.

2. A magnetic limited slip differential according to claim 1, characterized in that: The electromagnetic cutting assembly comprises: an electromagnet (3) disposed in the fixed shaft (22) and extending out from the fixed shaft (22); Furthermore, two conductive members (31) are respectively arranged at two ends of the electromagnet (3) in a length direction, and one end of the conductive member (31) away from the electromagnet (3) is connected to the conductive path to form a current path.

3. The magnetic limited slip differential according to claim 2, wherein: The conductive member (31) comprises a conductive brush (311), two ends of which are respectively connected to the electromagnet (3) and the conductive path.

4. The magnetic limited slip differential according to claim 1, wherein: The first gear set (21) includes two planetary gears (211), the two planetary gears (211) are respectively sleeved on both ends of the fixed shaft (22) in the length direction, and the planetary gears (211) are simultaneously engaged with the two half-shaft gears (231) and abut against the inner wall of the differential housing (2).

5. The magnetic limited slip differential according to claim 4, characterized in that: It also includes: A planetary gasket (212) is sleeved on the fixed shaft (22) and located between the planetary gear (211) and the differential housing (2).

6. The magnetic limited slip differential according to claim 1, characterized in that: It also includes: A half-shaft gasket (232) is provided on the half-shaft gear (231) and is located at one end of the two half-shaft gears (231) that is away from each other.

7. The magnetic limited slip differential according to claim 1, characterized in that: It also includes: A fixing pin (24) passes through the fixing shaft (22) and is connected to the differential housing (2).

8. The magnetic limited slip differential according to claim 1, wherein: It also includes: An electrical sensor (25) is sleeved on the differential housing (2) along the peripheral direction of the differential housing (2) to form a conductive path in the peripheral direction of the differential housing (2).

9. The magnetic limited slip differential according to claim 1, wherein: The surfaces of the differential housing (2), the fixed shaft (22) and the gear mechanism are all coated with an insulating coating.

10. The magnetic limited slip differential according to claim 1, wherein: An observation window (26) is provided on the surface of the differential housing (2) corresponding to the gear mechanism.

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