Differential and vehicle

Abstract

The application relates to the technical field of vehicle chassis, and provides a differential and a vehicle. The differential provided by the application comprises a differential housing, a first half shaft gear in transmission connection with a first half shaft, a second half shaft gear in transmission connection with the first half shaft gear through a planetary gear assembly, a disconnecting assembly in transmission connection with a second half shaft, and a driving assembly corresponding to the disconnecting assembly. The disconnecting assembly comprises a shaft ring arranged on the second half shaft gear, a toothed sleeve in transmission connection with the second half shaft, and an elastic piece in abutment with the shaft ring at one end, and a driving end of the driving assembly is in abutment with the shaft ring through a gasket. Under the driving of the driving assembly, the shaft ring can compress the elastic piece, and the second half shaft gear and the toothed sleeve are in transmission connection, and when the elastic piece is reset, the shaft ring can be driven to return to the original position, and the transmission connection between the second half shaft gear and the toothed sleeve is disconnected. The differential provided by the application can be disconnected, which is beneficial to reducing energy waste and improving the use quality of the differential.

Description

Technical Field

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

[0002] In a vehicle, a differential allows the left and right wheels to rotate at different speeds. This reduces tire wear and ensures a smooth ride when the vehicle is turning or driving on uneven surfaces by having the left and right wheels rotate at different speeds according to the path.

[0003] Currently, differentials generally do not have a disconnect function. When a vehicle is coasting in neutral or switching from four-wheel drive to two-wheel drive, although there is no torque or speed input to the differential from the drive shaft, the differential will receive the torque and speed input from the wheels and transmit them to the drive shaft, causing a power back-dragging phenomenon, which will lead to energy waste. Utility Model Content

[0004] In view of this, the present application aims to provide a differential that enables differential disengagement and improves the performance of the differential.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: A differential includes a differential housing, a first half-shaft gear that is drivenly connected to a first half-shaft, and a second half-shaft gear that is drivenly connected to the first half-shaft gear via a planetary gear assembly. It also includes a disconnection assembly that is connected to the second half-shaft drive, and a drive assembly provided corresponding to the disconnection assembly; The disconnecting component includes a collar disposed on the second half-shaft gear, a gear sleeve that is kinetically connected to the second half-shaft, and an elastic element with one end abutting against the collar. The driving end of the driving component abuts against the collar through a washer. Driven by the drive assembly, the collar can compress the elastic element and drive the second half-shaft gear and the gear sleeve together. When the elastic element resets, it can drive the collar back to its original position and disconnect the drive connection between the second half-shaft gear and the gear sleeve.

[0006] Furthermore, the collar is sleeved on one end of the second half-shaft gear, and the inner wall of the collar is provided with internal teeth, while the second half-shaft gear is provided with external teeth. The internal teeth and the external teeth mesh, constraining the collar to slide only along the axial direction of the second half-shaft gear.

[0007] Furthermore, the collar has a first end face tooth on the side facing the gear sleeve, and the gear sleeve has a second end face tooth on the side facing the collar. The collar connects the second half-shaft gear and the gear sleeve together through the meshing between the first end face teeth and the second end face teeth.

[0008] Furthermore, the elastic element is a wave spring; The elastic element is nested outside the gear sleeve, with one end of the elastic element abutting against the collar and the other end of the elastic element abutting against the differential housing.

[0009] Furthermore, the drive assembly includes a drive unit disposed on the differential housing, and a push rod that is driven by the drive unit to slide linearly. One end of the push rod is connected to the drive unit, the other end of the push rod constitutes the drive end, and the washer is fixedly connected to the push rod.

[0010] Furthermore, the drive unit employs an electromagnetic actuator; When the drive unit is energized, the push rod pushes the collar through the washer, causing the collar to compress the elastic element, and connecting the second half-shaft gear and the gear sleeve together. When the drive unit is de-energized, the elastic element resets, causing the collar to return to its original position and disconnecting the transmission connection between the second half-shaft gear and the gear sleeve.

[0011] Furthermore, the drive unit is located outside the differential housing, the push rod is disposed transversely through the differential housing, and there are multiple push rods arranged at intervals along the circumference of the washer.

[0012] Furthermore, a guide structure is provided between the differential housing and the washer, the guide structure constraining the washer to be able to move only along the axial direction of the collar.

[0013] Furthermore, the guide structure includes a guide groove provided on the inner wall of the differential housing, and a lug provided on the washer; The guide groove is arranged along the axial direction of the collar, and the lug is slidably embedded in the guide groove.

[0014] Compared with related technologies, this application has the following advantages: (1) The differential described in this application, by setting up the disconnect component and the drive component, and under the drive of the drive component, the collar can compress the elastic element and drive the second half shaft gear and the gear sleeve together. When the elastic element is reset, it can also drive the collar back to its original position and disconnect the transmission connection between the second half shaft gear and the gear sleeve. Thus, the disconnect function of the differential can be realized. When there is no input to the differential, it can avoid the phenomenon of power back drag caused by the differential receiving the torque and speed input from the wheel, resulting in energy waste. At the same time, by making the drive end of the drive component abut against the collar through the washer, it also helps to avoid abnormal wear and abnormal noise between the collar and the drive component. It can improve the NVH performance and durability of the differential, and thus improve the quality of use of the differential.

[0015] (2) By meshing the internal teeth on the inner wall of the collar with the external teeth on the second half-shaft gear, the collar can slide only along the axial direction of the second half-shaft gear while being set at one end of the second half-shaft gear. The structure is simple, easy to design and implement, and helps to ensure the smoothness of the collar as it rotates with the second half-shaft gear and slides relative to the second half-shaft gear.

[0016] (3) By utilizing the meshing between the first end face teeth on one side of the collar and the second end face teeth on the other side of the gear sleeve, the collar can drive the second half-shaft gear and the gear sleeve together. The structure is simple, easy to design and implement, and also helps to ensure the reliability of the transmission connection between the second half-shaft gear and the gear sleeve.

[0017] (4) The use of wave springs nested outside the gear sleeve for the elastic component not only makes it convenient to install the elastic component in the differential by taking advantage of the compact size of the wave spring structure and the small installation space required, but also makes it convenient to take advantage of the advantages of the wave spring such as high load-bearing capacity, good structural stability, strong buffering and vibration absorption capacity, good flexibility, strong impact resistance and high customizability, which is conducive to the design and manufacturing of the elastic component and ensures the quality of the elastic component.

[0018] (5) The drive assembly includes a drive unit and a push rod that is driven to slide linearly by the drive unit, and the washer is fixed to one end of the push rod. The drive unit and the washer can be arranged in the differential through the connecting action of the push rod.

[0019] (6) The drive unit adopts an electromagnetic actuator, which can take advantage of the advantages of electromagnetic actuator such as compact structure, simple operation, fast response speed, high reliability, long service life and easy remote control, so that the drive unit has a good drive control effect and helps to ensure the quality of differential use.

[0020] (7) The drive unit is set on the outside of the differential housing, so that the push rod is set across the differential housing and multiple push rods are arranged at intervals along the circumference of the washer. This can effectively reduce the size of the reducer housing, help reduce the space occupied by the differential, facilitate the arrangement of the differential in the vehicle, and also facilitate the installation of the drive unit on the differential housing. At the same time, setting multiple push rods at intervals along the circumference of the washer can ensure the driving effect of the drive unit on the washer, ensure the smoothness of the washer movement, and ensure the pushing effect of the washer on the collar.

[0021] (8) By setting a guide structure between the differential housing and the washer to restrict the washer to only move axially, the smoothness of the washer movement can be ensured when the drive unit moves the washer by the push rod. It can also prevent abnormal contact between the washer and the shaft collar when the washer and the shaft collar are in contact, thus ensuring the pushing effect of the washer on the shaft collar.

[0022] (9) The guide structure includes a guide groove on the inner wall of the differential housing and a lug on the washer. The lug slides in the guide groove to guide the washer. The structure is simple, easy to design and form, and helps to reduce the development and manufacturing cost of the differential.

[0023] Another object of this application is to provide a vehicle in which a differential as described above is provided.

[0024] The vehicle described in this application has the same beneficial effects as the aforementioned differential compared to related technologies, and will not be repeated here. Attached Figure Description

[0025] 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: Figure 1 This is a schematic diagram of the differential described in an embodiment of this application; Figure 2 This is a schematic diagram of the differential described in an embodiment of this application from another perspective; Figure 3 This is a schematic diagram of the internal structure of the differential described in the embodiments of this application; Figure 4 This is a schematic diagram of the differential shell structure described in the embodiments of this application; Figure 5 This is a schematic diagram of the differential shell from another perspective, as described in an embodiment of this application. Figure 6 This is a schematic diagram of the shell cover structure described in an embodiment of this application; Figure 7This is a schematic diagram showing the two half-shaft gears connected by a planetary gear assembly as described in the embodiments of this application; Figure 8 This is a schematic diagram of the structure of the second half-shaft gear described in the embodiment of this application; Figure 9 This is a schematic diagram of the structure of the collar described in an embodiment of this application; Figure 10 This is a schematic diagram of the collar described in an embodiment of this application from another perspective; Figure 11 This is a schematic diagram of the toothed sleeve described in an embodiment of this application; Figure 12 This is a schematic diagram of the toothed sleeve from another perspective in an embodiment of this application; Figure 13 This is a schematic diagram of the structure of the elastic element described in the embodiments of this application; Figure 14 This is a schematic diagram illustrating the structure of the driving component described in an embodiment of this application; Figure 15 This is a schematic diagram of the structure of the gasket described in an embodiment of this application; Explanation of reference numerals in the attached figures: 1. Differential housing; 2. First half-shaft gear; 3. Planetary gear assembly; 4. Second half-shaft gear; 5. Disconnect assembly; 6. Drive assembly; 101. Housing; 1011. Half-shaft gear mounting slot; 1012. Planetary gear shaft mounting hole; 1013. Mounting boss; 1014. Through hole; 1015. Guide groove; 1016. Connecting through hole; 102. Housing cover; 1021. Connecting hole; 1022. Gear sleeve mounting slot; 1023. Housing cover mating surface; 103. Connecting bolt; 301. Planetary gear axle; 302. Planetary gear; 401. External gear; 402. Thrust surface; 501, collar; 5011, internal gear; 5012, first end face gear; 5013, first abutting plane; 5014, collar abutting surface; 502, gear sleeve; 5021, mounting convex ring; 5022, second end face gear; 503, elastic element; 601, drive unit; 6011, drive disc; 602, push rod; 603, washer; 6031, lug; 6032, second abutment plane. Detailed Implementation

[0026] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0028] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are 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 on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0030] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which 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. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0032] An embodiment of the first aspect of this application provides a differential that is used in a vehicle. Through its innovative structural design, the differential of this embodiment not only enables the differential to disconnect but also improves the quality of differential use.

[0033] In related technologies, the differentials commonly used in vehicles generally do not have a disconnect function. When the vehicle is coasting in neutral or switching from four-wheel drive to two-wheel drive, although there is no torque or speed input to the differential from the drive shaft, the differential will receive the torque and speed input from the wheels and transmit the torque input from the wheels to the drive shaft, causing a power back-dragging phenomenon, which can lead to problems such as energy waste.

[0034] In view of this, in order to overcome the shortcomings of related technologies, the differential in this embodiment combines... Figures 1 to 15 As shown, the overall design includes a differential housing 1, a first half-shaft gear 2 that is drivenly connected to the first half-shaft (not shown in the figure), a second half-shaft gear 4 that is drivenly connected to the first half-shaft gear 2 through a planetary gear assembly 3, a disconnection assembly 5 that is drivenly connected to the second half-shaft (not shown in the figure), and a drive assembly 6 that is provided corresponding to the disconnection assembly 5.

[0035] The disconnecting component 5 includes a collar 501 disposed on the second half-shaft gear 4, a gear sleeve 502 that is connected to the second half-shaft for transmission, and an elastic element 503 that abuts against the collar 501 at one end. The driving end of the driving component 6 also abuts against the collar 501 through a washer 603.

[0036] Driven by the drive assembly 6, the collar 501 can compress the elastic element 503 and connect the second half-shaft gear 4 and the gear sleeve 502 together. At the same time, when the elastic element 503 is reset, it can drive the collar 501 back to its original position and disconnect the transmission connection between the second half-shaft gear 4 and the gear sleeve 502.

[0037] Thus, as configured above, by disconnecting component 5 and drive component 6, and under the drive of drive component 6, collar 501 can compress elastic element 503 to drive the second half-shaft gear 4 and gear sleeve 3 together. At the same time, when elastic element 503 resets, it can also drive collar 501 back to its original position and disconnect the drive connection between the second half-shaft gear 4 and gear sleeve 3. This embodiment can realize the differential disconnection function, and can avoid the power back-dragging phenomenon caused by the differential receiving the torque and speed input from the wheel when there is no input to the differential, thus avoiding energy waste.

[0038] Of course, furthermore, by having the drive end of the drive assembly 6 abut against the collar 501 via the washer 603, this embodiment also helps to avoid abnormal wear and noise between the collar 501 and the drive assembly 6, thereby improving the NVH performance and durability of the differential and achieving the effect of improving the quality of differential use.

[0039] Based on the above overview, specifically, it is worth noting that it is still by [the relevant authority / organization]. Figure 1 , Figure 2 as well as Figures 4 to 6 As shown, in some exemplary embodiments, the differential housing 1 of this embodiment may include, for example, a differential housing 101 and a housing cover 102 connected together.

[0040] The differential housing 101 is the main structure of the differential housing 1. The cover 102 is connected to one end of the differential housing 101 by connecting bolts 103. The cover 102 and the differential housing 101 together define the inner cavity of the differential housing 1. The first half-shaft gear 2, planetary gear assembly 3, second half-shaft gear 4, disconnect assembly 5, and a part of the drive assembly 6 are located in this inner cavity.

[0041] Furthermore, for the specific structure, please refer to [link / reference]. Figure 4 and Figure 5 As shown, the differential housing 101 has a central hole at the other end relative to the housing cover 102 for the first half-shaft to pass through. A half-shaft gear mounting groove 1011 is also provided inside the differential housing 101. The first half-shaft gear 2 is rotatably mounted in the half-shaft gear mounting groove 1011. At the same time, one end of the first half-shaft passes through the central hole on the differential housing 101 and is also inserted into the first half-shaft gear 2. The transmission connection can be achieved by using the spline pairs formed on both.

[0042] In addition to the half-shaft gear mounting slot 1011, the differential housing 101 also has a planetary gear shaft mounting hole 1012 and a connecting through hole 1016. The planetary gear shaft mounting hole 1012 is used to install the planetary gear shaft 301 in the planetary gear assembly 3 to realize the arrangement of the planetary gear assembly 3 in the differential housing 1, and the connecting through hole 1016 is used for the aforementioned connecting bolt 103 to pass through to realize the fixed connection between the differential housing 101 and the housing cover 102.

[0043] See also Figure 6 As shown, the cover 102 has a connecting hole 1021 and a gear sleeve mounting groove 1022. The connecting hole 1021 is specifically a threaded hole, which is used to screw the connecting bolt 103 passing through the connecting hole 1016, thus fixing the housing 101 and the cover 102 together. The gear sleeve mounting groove 1022 is used to rotatably mount the gear sleeve 502, and in specific implementation, it is combined with... Figure 12 As shown, the gear sleeve 502 can be installed into the gear sleeve mounting groove 1022 using the mounting protrusion 5021 located on one side of it.

[0044] In this embodiment, as follows... Figure 3 and Figure 7 As shown, the planetary gear assembly 3 may include, for example, a planetary gear shaft 301 and planetary gears 302 rotatably mounted at both ends of the planetary gear shaft 301. As described above, the planetary gear shaft 301 is mounted on the housing 101 via the planetary gear shaft mounting hole 1012, and each planetary gear 302 meshes with the first half-shaft gear 2 and the second half-shaft gear 4 on both sides, thereby realizing the transmission connection between the two half-shaft gears.

[0045] The installation arrangement of each planetary gear 302 on the planetary gear shaft 301, as well as the meshing between each planetary gear 302 and the two half-shaft gears, can all be referenced from the relevant structures in existing differentials, and will not be elaborated here.

[0046] In this embodiment, we continue to combine Figures 7 to 10 As shown, regarding the arrangement of the collar 501 on the second half-shaft gear 4, in some exemplary embodiments, the collar 501 is specifically sleeved on one end of the second half-shaft gear 4, and the inner wall of the collar 501 is provided with internal teeth 5011, while the second half-shaft gear 4 is provided with external teeth 401 that mesh with the internal teeth 5011. Thus, through the meshing between the internal teeth 5011 and the external teeth 401, the collar 501 is constrained to be able to slide only along the axial direction of the second half-shaft gear 4.

[0047] In this way, through the meshing between the internal teeth 5011 on the inner wall of the collar 501 and the external teeth 401 on the second half-shaft gear 4, while the collar 501 is set at one end of the second half-shaft gear 4, the collar 501 can only slide along the axial direction of the second half-shaft gear 4. It can be understood that this structure is not only simple and easy to design and implement, but also obviously helps to ensure that the collar 501 rotates with the second half-shaft gear 4 and the smoothness of the collar 501 sliding relative to the second half-shaft gear 4.

[0048] In a specific implementation, preferably, the internal teeth 5011 located on the inner wall of the collar 501 can be a plurality of teeth arranged at intervals along the circumference of the collar 501, and the external teeth 401 on the second half-shaft gear 4 are matched with the internal teeth 5011 on the collar 501, and can also be a plurality of teeth arranged at intervals along the circumference of the second half-shaft gear 4.

[0049] In addition, as before Figure 8 As shown, it is worth noting that a thrust surface 402 is also provided at the root of the external tooth 401 on the second half-shaft gear 4. The thrust surface 402 is used to limit the collar 501 so as to prevent the collar 501 from affecting the operation of the second half-shaft gear 4.

[0050] In this embodiment, in some exemplary implementations, the method continues to be used... Figure 7 , Figure 9 and combined Figure 11 As shown, when the collar 501 receives the drive assembly 6 to drive the compression elastic member 503, for the transmission connection between the collar 501 and the second half-shaft gear 4 and the gear sleeve 502, for example, a first end face tooth 5012 can be provided on the side of the collar 501 facing the gear sleeve 502, while a second end face tooth 5022 can be provided on the side of the gear sleeve 502 facing the collar 501. Based on this, the collar 501 drives the second half-shaft gear 4 and the gear sleeve 502 together through the meshing between the first end face tooth 5012 and the second end face tooth 5022.

[0051] At this point, it can be understood that by utilizing the meshing between the first end face tooth 5012 on one side of the collar 501 and the second end face tooth 5022 on one side of the sleeve 502, the collar 501 drives the second half-shaft gear 4 and the sleeve 502 together. Obviously, it also has the advantages of simple structure and easy design and implementation, and at the same time helps to ensure the reliability of the transmission connection between the second half-shaft gear 4 and the sleeve 502.

[0052] In a specific implementation, preferably, the first end face tooth 5012 located on one side of the collar 501 can also be a plurality of teeth arranged at intervals along the circumference of the collar 501, and the second end face tooth 5022 located on one side of the gear sleeve 502 is also matched with the first end face tooth 5012 on the collar 501, and can also be a plurality of teeth arranged at intervals along the circumference of the gear sleeve 502.

[0053] In this embodiment, it is worth noting that the gear sleeve 502 and the second half-shaft can generally be connected by a spline pair provided on both. Since the gear sleeve 502 and the second half-shaft are connected by transmission, no structure for transmission connection with the second half-shaft gear 4 is provided on the second half-shaft gear 4. At the same time, after the second half-shaft is inserted into the differential through the center hole on the housing 102 and is connected by transmission with the gear sleeve 502, the second half-shaft gear 4 can also be rotatably mounted on the end of the second half-shaft through the center hole thereon, so as to realize the rotational arrangement of the second half-shaft gear in the differential.

[0054] Continue by Figure 3 as well as Figure 13 As shown, in some exemplary embodiments of this embodiment, the elastic element 503 may be a wave spring, for example. When a wave spring is used, the elastic element 503 is nested outside the gear sleeve 502, with one end of the elastic element 503 abutting against the collar 501 and the other end abutting against the cover 102 in the differential housing 1.

[0055] It is understandable that by using a wave spring nested outside the gear sleeve 502 for the elastic element 503, the compact size and small installation space required by the wave spring can be utilized, facilitating the installation of the elastic element 503 within the differential. At the same time, this embodiment also clearly utilizes the advantages of the wave spring, such as high load-bearing capacity, good structural stability, strong damping and vibration absorption capacity, good flexibility, strong impact resistance, and high customizability, which are beneficial to the design and fabrication of the elastic element 503 and help ensure the quality of the elastic element 503 in use.

[0056] In practical implementation, to ensure the stability of the elastic element 503 between the collar 501 and the cover 102, for example, see... Figure 6 as well as Figure 9As shown, a cover abutment surface 1023 is formed on the cover 102, and a collar abutment surface 5014 is formed on the collar 501. The cover abutment surface 1023 and the collar abutment surface 5014 are usually designed to be flat. The two ends of the elastic element 503 of the wave spring abut against the cover abutment surface 1023 and the collar abutment surface 5014, respectively.

[0057] In some exemplary embodiments of this invention, the drive assembly 6 may include, for example, a drive portion 601 disposed on the differential housing 1, and a push rod 602 driven by the drive portion 601 to slide linearly. One end of the push rod 602 is connected to the drive portion 601, and the other end of the push rod 602 constitutes the drive end, while the washer 603 is fixedly connected to the push rod 602.

[0058] Thus, the drive assembly 6 includes a drive unit 601 and a push rod 602 that is driven by the drive unit 601 to slide linearly, and the washer 603 is fixedly connected to one end of the push rod 602. Obviously, through the connecting action of the push rod 602, it is convenient to realize the arrangement of the drive unit 601 and the washer 603 in the differential, which helps to reduce the design and manufacturing cost of the differential.

[0059] In practice, as a feasible implementation, in some exemplary embodiments, the drive unit 601 described above may be an electromagnetic actuator.

[0060] An electromagnetic actuator typically consists of an electromagnetic solenoid and a transmission piston. In this embodiment, a commonly used electromagnetic actuator capable of outputting linear driving force in existing vehicles is sufficient. By employing an electromagnetic actuator in the drive unit 601, it is understood that the advantages of electromagnetic actuators, such as compact structure, simple operation, fast response speed, high reliability, long service life, and ease of remote control, can be utilized to ensure excellent drive control performance of the drive unit 601, thus contributing to the quality of the differential in this embodiment.

[0061] Furthermore, since the drive unit 601 employs an electromagnetic actuator, when the drive unit 601 is energized, the push rod 602 can push the collar 501 through the washer 603, causing the collar 501 to compress the elastic element 503 and connecting the second half-shaft gear 4 and the gear sleeve 502 together. When the drive unit 601 is de-energized, the pushing force on the washer 603 disappears, the elastic element 503 can reset, causing the collar 501 to return to its original position and disconnecting the transmission connection between the second half-shaft gear 4 and the gear sleeve 502.

[0062] Still Figure 1 , Figure 2 and then combine Figure 14 and Figure 15As shown, in some exemplary embodiments of this embodiment, the drive unit 601 in the drive assembly 6 may be located outside the differential housing 1, and based on this arrangement, the push rod 602 is also arranged across the differential housing 1, and the push rod 602 is arranged in a plurality of spaced-apart arrangements along the circumference of the washer 603.

[0063] At this time, the drive unit 601 is set on the outside of the differential housing 1, so that the push rod 602 is set across the differential housing 1, and the push rod 602 is set as multiple rods arranged at intervals along the circumference of the washer 603. Compared with the form in which the drive unit 601 is located inside the differential housing 1, it can undoubtedly effectively reduce the size of the reducer housing 1, which helps to reduce the space occupied by the differential, thereby facilitating the arrangement of the differential in the vehicle. At the same time, it is also conducive to realizing the installation arrangement of the drive unit 601 on the differential housing 1.

[0064] By setting multiple push rods 602 arranged at intervals along the circumference of the washer 603, it can be understood that the synchronous force transmission of multiple push rods 602 can ensure the driving effect of the drive unit 601 on the washer 603, ensure the smooth movement of the washer 603, and ensure the pushing effect of the washer 603 on the collar 501.

[0065] In a specific implementation, the drive unit 601 located outside the differential housing 1 is specifically mounted on the differential housing 101, and since the drive unit 601 uses an electromagnetic actuator, for example, see... Figure 1 and Figure 4 As shown, a mounting boss 1013 is provided at one end of the housing 101, and the drive unit 601 is mounted on the mounting boss 1013.

[0066] In addition, to enable the push rod 602 to pass through the differential housing 1, specifically through the differential housing 101, a through hole 1014 can be provided on the differential housing 101. The outer diameter of the push rod 602 is smaller than the inner diameter of the through hole 1014, and a through hole 1014 can be provided on the differential housing 101 for each push rod 602.

[0067] In some exemplary embodiments of this embodiment, a guide structure may be provided between the differential housing 1 and the washer 603, and the guide structure is specifically used to constrain the washer 603 to move only along the axial direction of the collar 501.

[0068] Specifically, the guide structure is set between the differential housing 101 and the washer 603. By setting the guide structure between the differential housing 1 and the washer 603 to constrain the washer 603 to move only axially, it can be understood that it can ensure the smooth movement of the washer 603 when the drive unit 601 drives the washer 603 to move through the push rod 602. It can also prevent abnormal contact between the washer 603 and the shaft collar 501 when the washer 603 abuts against the shaft collar 501, thus ensuring the pushing effect of the washer 603 on the shaft collar 501.

[0069] In specific implementations, in some of the exemplary implementations, combined with Figure 5 and Figure 15 As shown, the aforementioned guide structure may specifically include, for example, a guide groove 1015 disposed on the inner wall of the differential housing 101 in the differential housing 1, and a lug 6031 disposed on the washer 603. The guide groove 1015 is arranged along the axial direction of the collar 501, and the lug 6031 is slidably embedded in the guide groove 1015.

[0070] Thus, the guide structure includes a guide groove 1015 provided on the inner wall of the differential housing 101 and a lug 6031 provided on the washer 603. The lug 6031 slides in the guide groove 1015 to guide the washer 603. It also has the characteristics of simple structure, easy design and molding, and also helps to reduce the development and manufacturing cost of differential.

[0071] In specific implementation, it should be noted that the aforementioned lugs 6031 can generally be multiple lugs arranged at intervals along the circumference of the washer 603, and the guide grooves 1015 on the differential housing 101 can also be multiple lugs arranged at intervals along the circumference of the differential housing 101. The lugs 6031 constituting the guide structure can be slidably embedded in the corresponding guide grooves 1015.

[0072] The washer 603 has multiple lugs 6031, which can not only form a guide structure, but also, in specific implementations, serve as a structure for connecting the washer 603 to the push rod 602. Furthermore, each push rod 602 is provided with a lug 6031, and each push rod 602 and its corresponding lug 6031 can be fixed together by means of screwing, snap-fitting, or interference fit.

[0073] In this embodiment, it remains the same. Figure 14 As shown, to facilitate the connection between the drive unit 601 and the push rod 602, in a specific implementation, for example, a drive disk 6011 can be provided at the drive unit 601. Since the drive unit 601 adopts an electromagnetic actuator, the drive disk 6011 is connected to the transmission piston in the drive unit 601 so that it can follow the transmission piston to drive the push rod 602.

[0074] The push rod 602 and the drive disc 6011 can also be fixed together by screws, snap-fits, or interference fits. Furthermore, this embodiment aims to reduce wear between the washer 603 and the collar 501 when they are in contact. For specific implementation details, please refer to [reference needed]. Figure 10 and Figure 15 As shown, for example, a first abutting plane 5013 can be formed on the collar 501, and a second abutting plane 6032 can be formed on the washer 603, which abuts against the first abutting plane 5013.

[0075] It is worth noting that, regarding the differential in this embodiment, based on the above exemplary implementations, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 15 As shown, it may include, for example, a differential housing 1, a first half-shaft gear 2 that is driven to the first half-shaft, and a second half-shaft gear 4 that is driven to the first half-shaft gear 2 via a planetary gear assembly 3, and also includes a disconnection assembly 5 that is driven to the second half-shaft, and a drive assembly 6 provided corresponding to the disconnection assembly 5.

[0076] The differential housing 1 includes a differential housing 101 and a housing cover 102 connected together. The disconnect assembly 5 includes a collar 501 disposed on the second half-shaft gear 4, a gear sleeve 502 drivenly connected to the second half-shaft, and an elastic member 503 with one end abutting against the collar 501. The collar 501 is slidably disposed along the axial direction of the second half-shaft gear 4 through the meshing between its internal teeth 5011 and the external teeth 401 on the second half-shaft gear 4. Specifically, the collar 501 also drivesly connects the second half-shaft gear 4 and the gear sleeve 502 together through the meshing between its first end face teeth 5012 on one side and the second end face teeth 5022 on the other side of the gear sleeve 502.

[0077] The elastic element 503 is a wave spring. The drive assembly 6 includes a drive part 601 disposed on the differential housing 1, and a push rod 602 driven by the drive part 601 to slide linearly. One end of the push rod 602 is fixedly connected to a washer 603, and the drive end of the drive assembly 6 abuts against the collar 501 through the washer 603.

[0078] Furthermore, the drive unit 601 employs an electromagnetic actuator and is located outside the differential housing 1. Push rods 602 are arranged transversely through the differential housing 101 and are spaced apart circumferentially along the gasket 603. Simultaneously, a guide structure consisting of a guide groove 1015 and a lug 6031 is provided between the differential housing 1 and the gasket 603. This guide structure constrains the gasket 603 to move only axially along the collar 501.

[0079] In the preferred embodiment of the differential above, the specific configuration and arrangement of the differential housing 1, disconnect component 5, drive component 6, etc. can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the differential housing 1, disconnect component 5, and drive component 6 can also be referred to the descriptions in the above exemplary embodiments.

[0080] Moreover, taking the differential in the above preferred embodiment as an example, in actual use, the differential is generally filled with lubricating grease to lubricate the meshing teeth and the parts with relative movement. During operation, by controlling the power on and off of the drive unit 601, with the cooperation of the elastic member 503, the differential function can be realized when the second half-shaft gear 4 and the gear sleeve 3 are connected together by the collar 501, and the differential can be disconnected when the transmission connection between the second half-shaft gear 4 and the gear sleeve 3 is disconnected.

[0081] The differential in this embodiment adopts the above design. By setting up the disconnect component 5 and the drive component 6, and by making the drive end of the drive component 6 abut against the collar 501 in the disconnect component 5 via the washer 603, the differential can be disconnected. When there is no input to the differential, it can avoid the phenomenon of power back drag caused by the differential receiving the torque and speed input from the wheel, which would lead to energy waste. It also helps to avoid abnormal wear and abnormal noise between the collar 501 and the drive component 6, which can improve the NVH performance and durability of the differential and improve the quality of use of the differential, thus having good practicality.

[0082] A second aspect of this application provides a vehicle in which a differential as described in the first aspect embodiment is provided. The installation and arrangement of the aforementioned differential in the vehicle can be found in the differential installation and arrangement methods in existing vehicles, and will not be repeated here.

[0083] The vehicle in this embodiment, by setting the differential as described above, can realize the differential disconnection function. When there is no input to the differential, it can avoid the phenomenon of power back drag caused by the differential receiving the torque and speed input from the wheels, which would lead to energy waste. At the same time, it can also help avoid abnormal wear and abnormal noise of the differential, improve the NVH performance and durability of the differential, and improve the quality of use of the differential, thus having good practicality.

[0084] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A differential, comprising a differential housing (1), a first half-shaft gear (2) drivenly connected to a first half-shaft, and a second half-shaft gear (4) drivenly connected to the first half-shaft gear (2) via a planetary gear assembly (3), characterized in that: It also includes a disconnect component (5) connected to the second half-shaft drive, and a drive component (6) provided corresponding to the disconnect component (5); The disconnecting component (5) includes a collar (501) disposed on the second half-shaft gear (4), a gear sleeve (502) that is connected to the second half-shaft in a transmission, and an elastic element (503) with one end abutting against the collar (501). The driving end of the driving component (6) abuts against the collar (501) through a washer (603). Driven by the drive assembly (6), the collar (501) can compress the elastic element (503) and drive the second half-shaft gear (4) and the gear sleeve (502) together. When the elastic element (503) is reset, it can drive the collar (501) back to its original position and disconnect the drive connection between the second half-shaft gear (4) and the gear sleeve (502).

2. The differential according to claim 1, characterized in that: The collar (501) is sleeved on one end of the second half-shaft gear (4), and the inner wall of the collar (501) is provided with internal teeth (5011), and the second half-shaft gear (4) is provided with external teeth (401). The internal teeth (5011) and the external teeth (401) mesh, constraining the collar (501) to slide only along the axial direction of the second half-shaft gear (4).

3. The differential according to claim 2, characterized in that: The collar (501) has a first end face tooth (5012) on the side facing the toothed sleeve (502), and the toothed sleeve (502) has a second end face tooth (5022) on the side facing the collar (501). The collar (501) connects the second half-shaft gear (4) and the gear sleeve (502) through the meshing between the first end face teeth (5012) and the second end face teeth (5022).

4. The differential according to claim 1, characterized in that: The elastic element (503) is a wave spring; The elastic element (503) is nested outside the gear sleeve (502), and one end of the elastic element (503) abuts against the collar (501), while the other end of the elastic element (503) abuts against the differential housing (1).

5. The differential according to any one of claims 1 to 4, characterized in that: The drive assembly (6) includes a drive unit (601) disposed on the differential housing (1) and a push rod (602) driven by the drive unit (601) to slide linearly. One end of the push rod (602) is connected to the drive unit (601), the other end of the push rod (602) constitutes the drive end, and the washer (603) is fixedly connected to the push rod (602).

6. The differential according to claim 5, characterized in that: The drive unit (601) employs an electromagnetic actuator; When the drive unit (601) is energized, the push rod (602) pushes the collar (501) through the washer (603), causing the collar (501) to compress the elastic element (503), and drivingly connecting the second half-shaft gear (4) and the gear sleeve (502) together; When the drive unit (601) is de-energized, the elastic element (503) resets, causing the collar (501) to return to its original position, and disconnecting the transmission connection between the second half-shaft gear (4) and the gear sleeve (502).

7. The differential according to claim 5, characterized in that: The drive unit (601) is located outside the differential housing (1), the push rod (602) is arranged across the differential housing (1), and the push rod (602) consists of a plurality of push rods arranged at intervals along the circumference of the washer (603).

8. The differential according to claim 5, characterized in that: A guide structure is provided between the differential housing (1) and the washer (603), the guide structure constraining the washer (603) to be able to move only along the axial direction of the collar (501).

9. The differential according to claim 8, characterized in that: The guide structure includes a guide groove (1015) provided on the inner wall of the differential housing (1) and a lug (6031) provided on the washer (603). The guide groove (1015) is arranged along the axial direction of the collar (501), and the lug (6031) is slidably embedded in the guide groove (1015).

10. A vehicle, characterized in that: The vehicle is equipped with a differential as described in any one of claims 1 to 9.

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