Differential locking mechanism, differential and vehicle

Abstract

The utility model relates to the technical field of vehicle transmission, and provides a differential mechanism locking mechanism, a differential mechanism and a vehicle, the differential mechanism locking mechanism comprises a first joint disc, a second joint disc and a third joint disc, the first joint disc is arranged on a differential mechanism shell and can reciprocate in the first direction relative to the differential mechanism shell, and the first joint disc and the differential mechanism shell are in locking fit in the circumferential direction; the second joint disc is arranged in the differential mechanism shell, the second joint disc and the wheel half shaft are in power joint and rotate synchronously, and the second joint disc can be in joint fit with the first joint disc; the reset assembly is elastically supported between the first joint disc and the second joint disc, is always in an energy storage state and has a movement trend of driving the first joint disc and the second joint disc to be far away from each other in the first direction; the first joint disc can move towards one side of the second joint disc in the first direction relative to the differential mechanism shell and is in joint fit with the second joint disc, so that the wheel half shaft locking function is achieved, and the vehicle escape performance can be improved.

Description

Technical Field

[0001] This application relates to the field of vehicle transmission technology, and in particular to a differential locking mechanism, a differential, and a vehicle. Background Technology

[0002] Currently, in vehicle transmission systems, the differential can only achieve the function of differential movement. However, with the improvement of living standards, vehicle configurations are no longer limited to meeting the needs of daily travel and tourism. More people are inclined towards off-road capability and safety, and vehicles with locking functions can be used to help the vehicle get out of trouble. For example, when one of the drive wheels on a vehicle slips, the power to that drive wheel will be consumed, making it impossible to get out of trouble.

[0003] In related technologies, if a single drive wheel of a vehicle slips, a differential with a locking function can lock the half-shafts of both wheels. At this time, the differential loses its differential function, thereby transferring torque to the effective wheel side (i.e., the other drive wheel arranged on the same axle as the failed wheel), so that the vehicle can obtain greater driving force, improve the vehicle's passability, and help the vehicle get out of trouble. However, the differential with a locking function has a relatively complex overall structure and a large overall size, which makes it inconvenient to arrange the differential in the transmission system. Utility Model Content

[0004] In view of this, this application aims to propose a differential locking mechanism to achieve the locking function of the wheel half-shafts on both sides of the vehicle, which helps to improve the vehicle's ability to get out of trouble.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0006] A differential locking mechanism is provided, the differential locking mechanism being used for a differential, and the differential having a differential housing. The differential locking mechanism includes: a first engagement plate, the first engagement plate being disposed inside the differential housing and capable of reciprocating relative to the differential housing along a first direction, and the first engagement plate being locked in a circumferential engagement with the differential housing; a second engagement plate, the second engagement plate being disposed within the differential housing and being poweredly engaged with and synchronously rotating with a wheel half-shaft, and the second engagement plate being capable of engaging with the first engagement plate; and a reset assembly, the reset assembly being elastically supported between the first engagement plate and the second engagement plate, and being in a normally stored energy state and having a tendency to drive the first engagement plate and the second engagement plate away from each other along the first direction; wherein the first engagement plate and the second engagement plate are disposed opposite each other in the first direction, and the first engagement plate is capable of moving relative to the differential housing along the first direction toward the second engagement plate and engaging with the second engagement plate.

[0007] According to some embodiments of this application, the first engagement disc includes a first disc body, the first disc body being provided with a first engagement tooth; the second engagement disc includes a second disc body, the second disc body being provided with a second engagement tooth on the side opposite to the first disc body, the second engagement tooth being provided protruding toward the first disc body along the first direction and used to engage with the first engagement tooth.

[0008] According to some embodiments of this application, the second engaging tooth is arranged in a ring shape, the second disk body has an annular mounting surface on the circumferential outer side of the second engaging tooth, and the reset component surrounds the circumferential outer side of the second engaging tooth and is disposed on the annular mounting surface.

[0009] According to some embodiments of this application, the reset assembly includes: a spring support pad, which is sleeved on the second engagement tooth and fits against the annular mounting surface; and a reset spring, which is sleeved on the second engagement tooth and elastically supported between the first disc body and the spring support pad.

[0010] According to some embodiments of this application, the first tray body is provided with a limiting groove that opens to one side of the second tray body; the spring support pad is provided with a limiting flange that extends from the spring support pad toward one side of the first tray body along the first direction, and at least part of the limiting flange is placed in the limiting groove to limit the spring support pad to engage with the first tray body in the circumferential direction, and the limiting flange can slide in the limiting groove along the first direction.

[0011] According to some embodiments of this application, the limiting flange is provided on the circumferential outer side of the reset spring and is used to limit the reset spring in the circumferential direction; and / or, the spring support pad is provided with a plurality of the limiting flanges, and the plurality of limiting flanges are arranged at intervals along the circumferential direction of the spring support pad.

[0012] According to some embodiments of this application, the first mating disc is arranged in a ring shape, and the second mating disc is provided with a positioning boss. The positioning boss protrudes from the body of the second disc along the first direction toward one side of the body of the first disc and is used to position and cooperate with the inner periphery of the first mating disc.

[0013] Compared with the prior art, the differential locking mechanism described in this application has the following advantages:

[0014] (1) The differential locking mechanism is arranged on the inside of the differential housing, and the components are closely matched, which can improve the space utilization of the differential. Moreover, the wheel half shaft can be locked with the differential housing through the first and second engagement plates, which helps to improve the vehicle's passability and off-road performance.

[0015] (2) The reset component is always in an energy storage state and is sandwiched between the first and second engagement plates, which can realize the reset adjustment of the first and second engagement plates. The reset component is located on the circumferential outside of the first engagement tooth and the second engagement tooth, which facilitates the improvement of the structural strength of the spring support pad.

[0016] (3) A spring support pad is provided between the reset spring and the second engagement plate, and the spring support pad is matched with the first engagement plate to prevent rotation at the spring support pad. This can prevent the torsional force on the second engagement plate from acting on the reset spring, and ensure the stability and reliability of the elastic support of the reset spring to the first engagement plate and the second engagement plate.

[0017] Another objective of this application is to propose a differential.

[0018] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0019] A differential, comprising the differential locking mechanism described above.

[0020] According to some embodiments of this application, the differential further includes: a differential housing having a cavity, and the locking mechanism being disposed in the cavity; and a drive mechanism disposed on the outside of the differential housing and used to drive the first engagement plate to move toward the second engagement plate side along the first direction.

[0021] According to some embodiments of this application, the differential housing is provided with a positioning groove that extends through the first direction; the first engagement plate is provided with a positioning protrusion that is inserted into the positioning groove, and a portion of the positioning protrusion protrudes outward from the positioning groove along the first direction.

[0022] The differential described above has the same advantages over the prior art as the differential locking mechanism described above, and will not be repeated here.

[0023] Another objective of this application is to propose a vehicle.

[0024] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0025] A differential, comprising the differential described above.

[0026] The vehicle described above has the same advantages over the prior art as the aforementioned differential, which will not be repeated here. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the differential described in one embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the differential locking mechanism according to one embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the structure of the first coupling plate according to an embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the structure of the second coupling disk according to one embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the structure of a spring support pad according to one embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] Differential 1000;

[0035] Differential locking mechanism 100; drive mechanism 200; drive unit 201; differential housing 300;

[0036] First mating disc 1; First disc body 11; Limiting groove 111; First mating tooth 12; Positioning protrusion 13;

[0037] Second mating disc 2; Second disc body 21; Annular mounting surface 211; Second mating tooth 22; Positioning boss 23; Internal spline 24;

[0038] Reset assembly 3; reset spring 31; spring support pad 32; limit flange 321. Detailed Implementation

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0040] The differential locking mechanism 100 of this application embodiment will be described in detail below with reference to the accompanying drawings and embodiments. The differential locking mechanism 100 is applied in the differential 1000 to realize the locking function at the differential 1000, thereby realizing the half-shaft locking function at the differential 1000.

[0041] The differential 1000 includes a differential housing 300, and the differential locking mechanism 100 can be disposed within the differential housing 300.

[0042] According to a first aspect of this application, a differential locking mechanism 100 includes a first engagement plate 1, a second engagement plate 2, and a reset assembly 3.

[0043] Specifically, the first engagement plate 1 is disposed on the differential housing 300, and the first engagement plate 1 can reciprocate relative to the differential housing 300 in a first direction. Moreover, the first engagement plate 1 and the differential housing 300 are locked in the circumferential direction, that is, the first engagement plate 1 cannot rotate relative to the differential housing 300. The second engagement plate 2 is disposed inside the differential housing 300. The second engagement plate 2 is disposed opposite to the first engagement plate 1 in the first direction. The second engagement plate 2 is poweredly engaged with the wheel half-shaft and rotates synchronously. Moreover, the second engagement plate 2 can engage with the first engagement plate 1.

[0044] When the first engagement plate 1 and the second engagement plate 2 are engaged, the second engagement plate 2 can be connected to the differential housing 300 through the first engagement plate 1, so that the wheel half shaft can be engaged to the differential housing 300 through the first engagement plate 1 and the second engagement plate 2, thereby achieving a locking engagement between the wheel half shaft and the differential housing 300, which helps to improve the vehicle's off-road performance.

[0045] Furthermore, the reset component 3 is elastically supported between the first engagement plate 1 and the second engagement plate 2, and the range component is always in an energy storage state, so that the reset component 3 has a tendency to drive the first engagement plate 1 and the second engagement plate 2 away from each other along the first direction, so as to realize the reset function of the first engagement plate 1 and the second engagement plate 2 through the reset component 3, thereby releasing the engagement state of the first engagement plate 1 and the second engagement plate 2.

[0046] It is understood that the first engagement plate 1 and the second engagement plate 2 are arranged opposite to each other in a first direction, and the first engagement plate 1 can reciprocate relative to the differential housing 300 in the first direction to achieve engagement or disengagement of the first engagement plate 1 and the second engagement plate 2. When the first engagement plate 1 moves towards the second engagement plate 2 in the first direction, the first engagement plate 1 can engage with the second engagement plate 2 to lock the wheel half-shaft to the differential housing 300; when the first engagement plate 1 moves away from the second engagement plate 2 in the first direction under the drive of the reset assembly 3, the first engagement plate 1 and the second engagement plate 2 disengage to release the locking engagement between the wheel half-shaft and the differential housing 300.

[0047] It should be noted that the first direction in this application is set parallel to the axial direction of the wheel half shaft, so that the wheel half shaft can be selectively locked to the differential housing 300 by the axial movement of the first engagement plate 1 relative to the wheel half shaft.

[0048] In this application, the reset component 3 is constantly in an energy-storing state, enabling it to provide stable support for the first mating plate 1 and the second mating plate 2. Furthermore, under the clamping action of the first and second mating plates 1 and 2, the reset component 3 can be constrained between them. The phrase "constantly in an energy-storing state" in this application means that the reset component 3 can continuously apply a driving force that moves the first and second mating plates 1 and 2 away from each other. For example, the reset spring 31, clamped between the first and second mating plates 1 and 2, is always in a compressed state regardless of the mating state of the first and second mating plates 1 and 2.

[0049] It can be further understood that when the first engagement plate 1 is driven to move toward the second engagement plate 2, the first engagement plate 1 and the second engagement plate 2 move closer to each other in the first direction, so as to compress the reset assembly 3 through the first engagement plate 1 and the second engagement plate 2, thereby increasing the energy storage of the reset assembly 3, so that when the driving force received at the first engagement plate 1 decreases or disappears, the first engagement plate 1 is driven to reset through the reset assembly 3.

[0050] Currently, in vehicle transmission systems, the differential 1000 can achieve the differential function. However, with the improvement of living standards, vehicle configurations are no longer limited to meeting daily travel and travel needs. More people are inclined towards off-road capability and safety, and vehicles with locking functions can be used to help the vehicle get out of trouble. For example, when one of the vehicle's drive wheels slips, the power to that drive wheel will be consumed, making it impossible to get out of trouble.

[0051] In related technologies, if a single drive wheel of a vehicle slips, the half-shafts of both wheels can be locked by a differential 1000 with a locking function. At this time, the differential 1000 loses its differential function, thereby transferring torque to the effective wheel side (i.e., the other drive wheel), so that the vehicle can obtain greater driving force, improve the vehicle's passability, and help the vehicle get out of trouble. However, the differential 1000 with a locking function has a relatively complex overall structure and a large overall size, which makes it inconvenient to arrange the differential 1000 in the transmission system.

[0052] In this application, the first engagement plate 1 and the second engagement plate 2 are both disposed inside the differential housing 300, thereby integrating the differential locking mechanism 100 into the differential housing 300, which helps to improve the space utilization of the differential 100. Furthermore, by moving the first engagement plate 1 in the first direction, the first engagement plate 1 and the second engagement plate 2 can be selectively engaged, thereby enabling the wheel half-shaft to engage with the differential housing 300, which helps to improve the vehicle's off-road performance.

[0053] Combination Figure 2 , Figure 3 and Figure 4 As shown in a further embodiment of this application, the first engaging plate 1 includes a first plate body 11, and the first plate body 11 is provided with a first engaging tooth 12; the second engaging plate 2 includes a second plate body 21, and the second plate body 21 is provided with a second engaging tooth 22 on the side opposite to the first plate body 11. The second engaging tooth 22 is provided to protrude towards the first plate body 11 in a first direction, and the second engaging tooth 22 is used to engage with the first engaging tooth 12 to realize the engagement of the second engaging plate 2 and the first engaging plate 1, so that the second engaging plate 2 cannot rotate relative to the first engaging plate 1 around the central axis.

[0054] Specifically, the first engaging tooth 12 is formed on one side surface of the first disk body 11 and the second disk body 21, and has a recessed tooth that can engage with the second engaging tooth 22. The recessed tooth is used for the second engaging tooth 22 to extend in the first direction so as to achieve engagement between the second engaging tooth 22 and the first engaging tooth 12.

[0055] The first engaging tooth 12 and the second engaging tooth 22 are both configured in a ring shape, so that when the first engaging tooth 12 and the second engaging tooth 22 are engaged, the rotation of the second engaging disk 2 relative to the first engaging disk 1 can be restricted.

[0056] It is understandable that the second engagement plate 2 is poweredly engaged with the wheel half-shaft, allowing the second engagement plate 2 to rotate synchronously with the wheel half-shaft. The second engagement plate 2 is coaxially arranged with the wheel half-shaft, and the second engagement plate 2 can rotate around its own central axis (which is also the central axis of the wheel half-shaft). The second engagement plate 2 can be poweredly engaged with the wheel half-shaft via a spline connection.

[0057] Combination Figure 2 and Figure 4 As shown, in some embodiments of this application, the second engagement tooth 22 is arranged in a ring shape, the second disk body 21 has an annular mounting surface 211 formed on the circumferential outer side of the second engagement tooth 22, the reset component 3 is arranged around the circumferential outer side of the second engagement tooth 22, and the reset component 3 is disposed on the annular mounting surface 211 so that the reset component 3 can be assembled by the cooperation between the second disk body 21 and the reset component 3.

[0058] The reset component 3 is sleeved around the outer side of the second engaging tooth 22, thereby placing the reset component 3 outside the engagement position of the first engaging tooth 12 and the second engaging tooth 22, which can reserve sufficient space for the reset component 3 to improve the overall strength of the reset component 3.

[0059] Combination Figure 2 , Figure 4 and Figure 5As shown, in a further embodiment of this application, the reset assembly 3 includes: a spring support pad 32 and a reset spring 31. The spring support pad 32 is sleeved on the second engagement tooth portion 22 and is fitted to the annular mounting surface 211. The reset spring 31 is sleeved on the second engagement tooth portion 22 and is elastically supported between the first disc body 11 and the spring support pad 32.

[0060] Since the reset component 3 in this application is in a constant energy storage state, the spring support pad 32 can be kept in close contact with the annular mounting surface 211 under the elastic support of the reset spring 31. The spring support pad 32 separates the reset spring 31 from the annular mounting surface 211 to prevent interference between the reset spring 31 and the second engagement plate 2, thus ensuring the service life of the reset spring 31.

[0061] It should be noted that in the differential locking mechanism 100 of this application embodiment, the second engagement plate 2 is dynamically engaged with the wheel half-shaft. That is, when the first engagement plate 1 and the second engagement plate 2 are not engaged, the second engagement plate 2 can rotate relative to the first engagement plate 1 along with the wheel half-shaft. If the spring support pad 32 is not provided between the reset assembly 3 and the annular mounting surface 211, the reset spring 31 will abut against the second engagement plate 2. Under the driving action of the second engagement plate 2, the two end faces of the reset spring 31 (i.e., the end face of the reset spring 31 abutting against the first engagement plate 1 and the end face of the reset spring 31 abutting against one side of the second engagement plate 2) will twist relative to each other. If a twist occurs at the reset spring 31 along the winding direction of the reset spring 31, the elastic force of the reset spring 31 will be reduced, resulting in a mis-locking problem at the reset spring 31; if a twist occurs at the reset spring 31 against the winding direction of the reset spring 31, the elastic force of the reset spring 31 will be increased, resulting in a problem that the first engagement plate 1 and the second engagement plate 2 cannot be effectively locked. At the same time, the continuous twisting of the return spring 31 results in low durability and a significantly shortened service life.

[0062] In this application, the spring support pad 32 is positioned between one end of the return spring 31 and the annular mounting surface 211. This prevents the torsional force generated on one side of the second mating disc 2 from acting on the return spring 31, thus ensuring the reliability of the elastic support of the return spring 31 and helping to extend its service life. The spring support pad 32 needs to have good structural strength and wear resistance.

[0063] Combination Figure 2 , Figure 3 and Figure 4As shown, in some embodiments of this application, the first tray body 11 is provided with a limiting groove 111 that opens to one side of the second tray body 21; the spring support pad 32 is provided with a limiting flange 321, which extends from the spring support pad 32 to one side of the first tray body 11 along a first direction, and at least part of the limiting flange 321 is placed in the limiting groove 111, so that the limiting flange 321 and the limiting groove 111 are limited and engaged, so that the spring support pad 32 is limited and engaged with the first tray body 11 in the circumferential direction.

[0064] Therefore, the spring support pad 32 can only be adjusted in the first direction relative to the first disc body 11. In other words, the spring support pad 32 cannot rotate relative to the first disc body 11, which can prevent the spring support pad 32 from rotating.

[0065] Since the limiting groove 111 is designed to be open to the side of the second disc body 21, the limiting flange 321 can extend into the limiting groove 111 from the open end of the limiting groove 111. When the first connecting disc 1 is adjusted to the position in the first direction, the limiting flange 321 can slide relative to the first connecting disc 1 in the limiting groove 111 along the first direction. During the sliding process of the limiting flange 321 relative to the limiting groove 111, the limiting flange 321 maintains a limiting fit with the limiting groove 111 to ensure the anti-rotation effect at the spring support pad 32.

[0066] Understandably, the spring support pad 32 maintains abutment against the annular mounting surface 211 under the elastic support of the return spring 31. Therefore, when the second mating disc 2 rotates, the friction between the spring support pad 32 and the annular mounting surface 211 tends to cause the spring support pad 32 to rotate. In this application, the limiting flange 321 and the limiting groove 111 effectively limit the rotation of the spring support pad 32 relative to the first mating disc 1, thereby preventing the rotating spring support pad 32 from transmitting torsional force to the return spring 31. This ensures the reliability and stability of the elastic support provided by the return spring 31 between the first disc body 11 and the spring support pad 32.

[0067] In some embodiments of this application, the limiting flange 321 and the limiting surface of the limiting groove 111 are in clearance fit, and the clearance between the limiting flange 321 and the limiting surface of the limiting groove 111 is small, such as no more than 1 mm, etc., which is not specifically limited here. Here, the limiting surface of the limiting groove 111 refers to the side wall of the limiting groove 111, that is, the wall surface used to restrict the rotation of the limiting flange 321.

[0068] like Figure 3As shown, in some embodiments of this application, the limiting groove 111 is formed on the outer peripheral wall of the first disc body 11, and the limiting groove 111 is recessed from the outer peripheral wall of the first disc body 11 in the radial direction toward the center side of the first disc body 11, thereby reducing the processing difficulty of the limiting groove 111 and facilitating the insertion and cooperation between the limiting groove 111 and the limiting flange 321.

[0069] Combination Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments of this application, the limiting flange 321 is disposed on the circumferential outer side of the reset spring 31, and the limiting flange 321 is used to limit the reset spring 31 in the circumferential direction, so that the inner sidewall of the limiting flange 321 limits the reset spring 31, which helps to improve the elastic support stability and reliability of the reset spring 31.

[0070] The return spring 31 is sleeved on the second engaging tooth 22. The inner circumferential side of the return spring 31 can cooperate with the outer circumferential wall of the annularly arranged second engaging tooth 22 to support the inner circumferential side of the return spring 31. The limiting flange 321 provided on the outer side of the return spring 31 can avoid the return spring 31, preventing interference between the limiting flange 321 and the return spring 31. Moreover, the limiting flange 321 can limit and support the outer circumferential side of the return spring 31.

[0071] like Figure 5 As shown, in some embodiments of this application, the spring support pad 32 is provided with multiple limiting flanges 321, and the multiple limiting flanges 321 are arranged at intervals along the circumferential direction of the spring support pad 32 to improve the reliability of the limiting fit between the spring support pad 32 and the first disc body 11, avoid excessive local stress at the fit between the limiting flange 321 and the limiting groove 111, help extend the service life of the limiting flange 321 and ensure the limiting reliability.

[0072] It is understandable that the first tray body 11 is provided with limiting grooves 111 that match the number of limiting flanges 321, so that the first tray body 11 and the spring support pad 32 can achieve limiting cooperation through multiple sets of limiting flanges 321 and limiting grooves 111, thereby increasing the contact cooperation area between the first tray body 11 and the spring support pad 32 in the limiting anti-rotation direction and improving the reliability of the limiting cooperation between the first tray body 11 and the spring support pad 32.

[0073] Combination Figure 2 , Figure 3 and Figure 4As shown, in some embodiments of this application, the first mating plate 1 is arranged in a ring shape, and the second mating plate 2 is provided with a positioning boss 23. The positioning boss 23 protrudes from the second plate body 21 along a first direction toward the first plate body 11 and is used to position and cooperate with the inner circumference of the first mating plate 1 to improve the stability of the position adjustment process of the first mating plate 1 relative to the second mating plate 2.

[0074] In a further embodiment of this application, the second engagement disk 2 has a hole structure that extends through the first direction. An inner spline 24 is provided on the inner peripheral wall of the hole structure. The inner spline 24 is used to engage with the outer spline (not shown in the figure) of the wheel half-shaft to realize the power engagement between the second engagement disk 2 and the wheel half-shaft, so that the second engagement disk 2 can rotate synchronously with the wheel half-shaft.

[0075] In some embodiments of this application, the differential housing 300 is provided with a positioning groove (not shown in the figure) that extends through a first direction, the positioning groove being used for positioning and engaging with the first engagement plate 1.

[0076] Combination Figure 1 , Figure 2 as well as Figure 3 As shown, a positioning protrusion 13 is provided on the side of the first engagement plate 1 away from the second engagement plate 2. The positioning protrusion 13 is used to engage with the positioning groove, and part of the positioning protrusion 13 protrudes outward from the positioning groove along the first direction, so that part of the positioning protrusion 13 can be exposed on the outside of the differential housing 300, which facilitates the engagement of the positioning protrusion 13 with the drive mechanism 200.

[0077] Combination Figure 2 and Figure 3 As shown, the positioning protrusion 13 protrudes from the first disc body 11 along the first direction toward the side away from the second disc body 21, and part of the positioning protrusion 13 can protrude from the differential housing 300, so that the drive mechanism 200 can be correspondingly set with the positioning protrusion 13, so that the driving force can be applied to the first disc body 11 through the positioning protrusion 13 to realize the driving of the first disc body 11.

[0078] Reference Figure 3 As shown, the first engagement plate 1 is provided with a plurality of positioning protrusions 13, which are arranged at intervals along the circumference on the first plate body 11, so as to improve the positioning reliability between the first engagement plate 1 and the differential housing 300 by positioning and cooperating with the differential housing 300 through the plurality of positioning protrusions 13.

[0079] The differential locking mechanism 100 according to the embodiments of this application has at least the following advantages:

[0080] (1) The differential locking mechanism 100 is arranged on the inner side of the differential housing 300, and the components are closely matched, which can improve the space utilization of the differential 1000. Moreover, the wheel half shaft can be locked with the differential housing 300 through the first engagement plate 1 and the second engagement plate 2, which helps to improve the vehicle's passability and off-road performance.

[0081] (2) The reset component 3 is always in an energy storage state and is sandwiched between the first engagement plate 1 and the second engagement plate 2, which can realize the reset adjustment of the first engagement plate 1 and the second engagement plate 2. The reset component 3 is located on the circumferential outside of the first engagement tooth 12 and the second engagement tooth 22, which facilitates the improvement of the structural strength of the spring support pad 32.

[0082] (3) A spring support pad 32 is provided between the return spring 31 and the second connecting plate 2, and the spring support pad 32 is in a limiting fit with the first connecting plate 1 to achieve anti-rotation at the spring support pad 32, which can prevent the torsional force on one side of the second connecting plate 2 from acting on the return spring 31, and ensure the stability and reliability of the elastic support of the return spring 31 to the first connecting plate 1 and the second connecting plate 2.

[0083] (4) The first engagement plate 1 can be positioned and engaged with the differential housing 300 by the positioning protrusion 13 provided on the differential housing 300, and can achieve anti-rotation design of the first engagement plate 1 relative to the differential housing 300. Moreover, the first engagement plate 1 can be driven by the drive mechanism 200 and the part of the positioning protrusion 13 protruding from the differential housing 300.

[0084] According to the second aspect of this application, the differential 1000 includes the differential locking mechanism 100 described above. The differential 1000 can lock the wheel half shaft and the differential housing 300 through the differential locking mechanism 100, which helps to improve the overall passability of the vehicle and enables the vehicle to get out of trouble by using the other drive wheel when one drive wheel fails (such as slipping or being suspended).

[0085] In a further embodiment of this application, the differential 1000 further includes: a differential housing 300 and a drive mechanism 200. The differential housing 300 has a cavity, and a locking mechanism is disposed in the cavity to improve the integration of the differential 1000, making the components in the differential 1000 fit together compactly, which helps to improve the space utilization of the differential 1000, reduce the overall volume of the differential 1000, and reduce the difficulty of arranging the differential 1000 in the vehicle.

[0086] Reference Figure 1As shown, the drive mechanism 200 is located on the outside of the differential housing 300, and the drive mechanism 200 is used to drive the first engagement plate 1 to move towards the second engagement plate 2 in the first direction, so as to output driving force through the drive mechanism 200 to drive the first engagement plate 1 towards the second engagement plate 2, thereby realizing the engagement of the first engagement plate 1 and the second engagement plate 2.

[0087] Specifically, the drive mechanism 200 may include an electromagnetic coil and a drive unit 201. The electromagnetic coil may be sleeved on the differential housing 300 or the wheel half-shaft. The drive unit 201 may move in a first direction under the action of the electromagnetic coil to abut against the part of the first engagement plate 1 that protrudes from the differential housing 300 and output driving force to the first engagement plate 1 to drive the first engagement plate 1 to move.

[0088] It should be noted that the structure and installation method of the drive mechanism 200 are not limited to this, and it can also be constructed as a hydraulic drive device, etc.

[0089] In a specific embodiment of this application, the driving part 201 is configured as an annular driving disk, which can fully correspond to the first engaging disk 1 to ensure the driving effect of the annular driving disk on the first engaging disk 1.

[0090] According to a third aspect embodiment of this application, the vehicle includes the differential 1000 described above.

[0091] The advantages of this vehicle compared to existing technologies are the same as those of the aforementioned differential 1000, and will not be repeated here.

[0092] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0093] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0094] In the description of this application, "multiple" means two or more.

[0095] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0096] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A differential locking mechanism, characterized in that, The differential locking mechanism (100) is used for the differential, and the differential has a differential housing (300). The differential locking mechanism includes: The first engagement plate (1) is located inside the differential housing (300) and can reciprocate relative to the differential housing (300) in a first direction, and the first engagement plate (1) and the differential housing (300) are locked together in the circumferential direction. The second engagement plate (2) is located inside the differential housing (300) and is positioned opposite to the first engagement plate (1) in the first direction. The second engagement plate (2) is powered to engage with the wheel half-shaft and rotates synchronously. The second engagement plate (2) can engage with the first engagement plate (1). The reset component (3) is elastically supported between the first engagement plate (1) and the second engagement plate (2), and is always in an energy storage state and has a tendency to drive the first engagement plate (1) and the second engagement plate (2) to move away from each other along the first direction; The first engagement plate (1) can move relative to the differential housing (300) along the first direction toward the second engagement plate (2) and engage with the second engagement plate (2).

2. The differential locking mechanism according to claim 1, characterized in that, The first engagement plate (1) includes a first plate body (11), and the first plate body (11) is provided with a first engagement tooth (12). The second engagement plate (2) includes a second plate body (21). The second plate body (21) is provided with a second engagement tooth (22) on the side opposite to the first plate body (11). The second engagement tooth (22) protrudes towards the first plate body (11) along the first direction and is used to engage with the first engagement tooth (12).

3. The differential locking mechanism according to claim 2, characterized in that, The second engagement tooth (22) is arranged in a ring shape, and the second disk body (21) has an annular mounting surface (211) on the circumferential outer side of the second engagement tooth (22). The reset component (3) surrounds the circumferential outer side of the second engagement tooth (22) and is located on the annular mounting surface (211).

4. The differential locking mechanism according to claim 3, characterized in that, The reset component (3) includes: Spring support pad (32), the spring support pad (32) is sleeved on the second engaging tooth (22) and fits against the annular mounting surface (211); A reset spring (31) is sleeved on the second engagement tooth (22) and elastically supported between the first disc body (11) and the spring support pad (32).

5. The differential locking mechanism according to claim 4, characterized in that, The first plate body (11) is provided with a limiting groove (111) that opens to the side of the second plate body (21). The spring support pad (32) is provided with a limiting flange (321). The limiting flange (321) extends from the spring support pad (32) toward the first disk body (11) along the first direction. At least part of the limiting flange (321) is placed in the limiting groove (111) to limit the spring support pad (32) to cooperate with the first disk body (11) in the circumferential direction. The limiting flange (321) can slide in the limiting groove (111) along the first direction.

6. The differential locking mechanism according to claim 5, characterized in that, The limiting flange (321) is provided on the circumferential outer side of the return spring (31) and is used to limit the return spring (31) in the circumferential direction; And / or, the spring support pad (32) is provided with a plurality of limiting flanges (321), and the plurality of limiting flanges (321) are arranged at intervals along the circumferential direction of the spring support pad (32).

7. The differential locking mechanism according to claim 2, characterized in that, The first mating plate (1) is arranged in a ring shape, and the second mating plate (2) is provided with a positioning boss (23). The positioning boss (23) protrudes from the second plate body (21) along the first direction toward the first plate body (11) and is used to position and cooperate with the inner periphery of the first mating plate (1).

8. A differential, characterized in that, The differential includes the differential locking mechanism according to any one of claims 1-7, and the differential further includes: A differential housing (300) having a cavity, and the locking mechanism being disposed in the cavity; A drive mechanism (200) is provided on the outside of the differential housing (300) and is used to drive the first engagement plate (1) to move along the first direction toward the second engagement plate (2).

9. The differential according to claim 8, characterized in that, The differential housing (300) is provided with a positioning groove that extends through the first direction; The first coupling plate (1) is provided with a positioning protrusion (13), which is inserted into the positioning groove, and part of the positioning protrusion (13) protrudes outward from the positioning groove along the first direction.

10. A vehicle, characterized in that, Includes the differential according to any one of claims 8-9.

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