Auxiliary tooling

Abstract

This application discloses an auxiliary tooling for assembling a differential. The differential includes a differential housing, a first half-shaft gear set, and a second half-shaft gear set, which are disposed within the differential housing. The auxiliary tooling is positioned between the first and second half-shaft gear sets. The auxiliary tooling includes a first top block and a second top block. The first top block abuts against the first half-shaft gear set, and the second top block abuts against the second half-shaft gear set. The first top block is provided with a stud, and the second top block is provided with a threaded hole that mates with the stud. This allows the first and second top blocks to move away from each other when they rotate relative to each other, thereby compressing the first and second half-shaft gear sets. The auxiliary tooling of this application has a simple structure and is easy to operate, reducing the assembly difficulty of the differential and improving assembly efficiency.

Description

Technical Field

[0001] This application relates to the field of differential assembly technology, and in particular to an auxiliary tooling. Background Technology

[0002] In automotive transmissions or electric drive systems, two wave-shaped washers or arc-shaped thrust washers are often placed between the two half-shaft gears and the differential housing. The wave-shaped washers are in a compressed state within the differential, and the elastic force generated by their compression keeps the half-shaft gears tightly pressed against the differential housing, thereby greatly reducing abnormal noise from the differential during vehicle operation. However, during differential assembly, significant pressure must first be applied to the wave-shaped washers to compress them to a certain stroke before the half-shaft gears, planetary gears, and other components can be properly assembled.

[0003] Meanwhile, due to the small assembly space and high assembly precision requirements of differentials, the auxiliary tooling structures in related technologies are complex and cumbersome to operate, resulting in poor actual performance. Utility Model Content

[0004] This application provides an auxiliary tooling, which aims to simplify the structure of the auxiliary tooling, reduce the difficulty of operating the auxiliary tooling, thereby reducing the assembly difficulty of the differential and improving the assembly efficiency of the differential.

[0005] According to an embodiment of this application, the auxiliary tooling is used for assembling a differential. The differential includes a differential housing, a first half-shaft gear set, and a second half-shaft gear set. The first half-shaft gear set and the second half-shaft gear set are disposed within the differential housing. The auxiliary tooling is disposed between the first half-shaft gear set and the second half-shaft gear set. The auxiliary tooling includes: a first top block, which abuts against the first half-shaft gear set; and a second top block, which abuts against the second half-shaft gear set. The first top block is provided with a stud, and the second top block is provided with a threaded hole that mates with the stud, so that when the first top block and the second top block rotate relative to each other, the first top block and the second top block can move away from each other to compress the first half-shaft gear set and the second half-shaft gear set.

[0006] According to the auxiliary tooling of the present application embodiment, the distance between the first top block and the second top block is adjusted by means of a stud and a screw hole in a threaded engagement manner, which can better compress the first half-shaft gear set and the second half-shaft gear set, thereby facilitating the assembly of planetary gears. Moreover, the auxiliary tooling of the present application has a simple structure and is easy to operate, which helps to reduce the assembly difficulty of the differential and improve the assembly efficiency of the differential.

[0007] In addition, the auxiliary tooling according to this application may also have the following additional technical features: In some embodiments of this application, the first top block is provided with a first driving part, and the first top block is adapted to drive the first top block to rotate through the first driving part.

[0008] In the above-mentioned technical method, the stud can be rotated in the screw hole by simply driving the first top block to rotate, thereby adjusting the distance between the first top block and the second top block. The operation method is simple and convenient.

[0009] In some embodiments of this application, the first driving part includes: a groove, the groove being disposed on the side of the first top block away from the stud, the groove being opposite to the shaft hole of the first half-shaft gear set, and a limited rotating surface being provided in the groove.

[0010] In the above-mentioned technical method, along the axial direction of the first half-shaft gear set, the groove is arranged at the end of the first top block. When the first top block rotates, the groove and the adjusting rod are less likely to interfere with the components inside the differential, which is beneficial to the use of auxiliary tooling and can also help improve the assembly efficiency of the differential.

[0011] In some embodiments of this application, the cross-sectional shape of the groove is polygonal in a section perpendicular to the shaft hole.

[0012] In the above-mentioned technical method, by making the cross-sectional shape of the groove polygonal, the relative position of the adjusting rod and the first top block in the rotation direction can be better restricted during rotation, so that the adjusting rod and the first top block are less likely to slip when the adjusting rod drives the first top block to rotate, thereby improving the stability of the auxiliary tooling.

[0013] In some embodiments of this application, the second top block is provided with a second driving part, and the second top block is adapted to drive the second top block to rotate through the second driving part.

[0014] In the above-mentioned technical method, the stud can be rotated in the screw hole by simply driving the second top block to rotate, thereby adjusting the distance between the first top block and the second top block. The operation is simple and convenient.

[0015] In some embodiments of this application, the second top block includes at least one locking hole, which is formed by a recess in the outer peripheral surface of the second top block. When there are multiple locking holes, the multiple locking holes are arranged circumferentially spaced apart along the second top block.

[0016] In the above-mentioned technical method, the second top block can be adjusted simply by inserting the drive rod. The adjustment method is simple and convenient, which can facilitate the use of auxiliary tooling and improve the assembly efficiency of the differential.

[0017] In some embodiments of this application, the locking hole is a blind hole.

[0018] In the above-mentioned technical method, by making the locking hole a blind hole, the driving rod is less likely to penetrate into the screw hole when it is engaged with the locking hole. As a result, it is less likely to damage the threads and studs in the screw hole, thereby improving the reliability of the auxiliary tooling.

[0019] In some embodiments of this application, the screw hole is a through hole penetrating the second top block.

[0020] In the above-mentioned technical method, by making the screw hole a through hole that penetrates the second top block, the thickness of the second top block can be adjusted more flexibly. It is not easy for the feed rate of the stud to be affected by the second top block being too thick or too thin. At the same time, the processing method of the through hole is simple, which helps to reduce production costs.

[0021] In some embodiments of this application, the second top block has a first protrusion structure on its side facing the first top block, and in the radial direction of the screw hole, the outer peripheral surface of the first protrusion structure is located on the side of the outer peripheral surface of the second top block closer to the screw hole.

[0022] In the above-mentioned technical method, after the first top block and the second top block abut against each other, by setting the first protrusion structure, the end of the second top block facing the first top block still has a gap with the first top block in the circumferential direction, thereby avoiding the problem that the first top block and the second top block are not easy to separate after they are attached.

[0023] In some embodiments of this application, the first top block has a second protrusion structure on its side facing the second top block. In the radial direction of the stud, the outer peripheral surface of the second protrusion structure is located on the side of the outer peripheral surface of the first top block closer to the stud, and in the axial direction of the stud, the size of the second protrusion structure is smaller than the size of the stud.

[0024] In the above-mentioned technical method, after the first top block and the second top block abut against each other, by setting a second protruding structure, the end of the first top block facing the second top block still has a gap with the second top block in the circumferential direction, thereby avoiding the problem that the first top block and the second top block are not easy to separate after they are attached.

[0025] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1This is a schematic diagram of the differential and auxiliary tooling in one embodiment of this application, showing a structural view at one angle. Figure 2 This is an exploded view of an auxiliary tooling provided in an embodiment of this application; Figure 3 This is a schematic diagram of the differential and auxiliary tooling provided in one embodiment of this application from another angle.

[0027] Explanation of reference numerals in the attached figures: 10. Auxiliary tooling; 1. First top block; 11. Stud; 12. Groove; 2. Second top block; 21. Screw hole; 22. Locking hole; 23. First protruding structure; 20. Differential; 3. Differential housing; 4. First half-shaft gear set; 41. Shaft hole; 5. Second half-shaft gear set; 6. Planetary gear. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In automotive transmissions or electric drive systems, two wave-shaped washers or arc-shaped thrust washers are often placed between the two half-shaft gears and the differential housing. The wave-shaped washers are in a compressed state within the differential, and the elastic force generated by their compression keeps the half-shaft gears tightly pressed against the differential housing, thereby greatly reducing abnormal noise from the differential during vehicle operation. However, during differential assembly, significant pressure must first be applied to the wave-shaped washers to compress them to a certain stroke before the half-shaft gears, planetary gears, and other components can be properly assembled.

[0032] Meanwhile, due to the small assembly space and high assembly precision requirements of differentials, the auxiliary tooling structures in related technologies are complex and cumbersome to operate, resulting in poor actual performance.

[0033] like Figures 1-3 As shown in the embodiment of this application, an auxiliary tooling 10 is provided. The auxiliary tooling 10 can be used for assembling a differential 20. The differential 20 includes a differential housing 3, a first half-shaft gear set 4, and a second half-shaft gear set 5. The first half-shaft gear set 4 and the second half-shaft gear set 5 are disposed inside the differential housing 3. The auxiliary tooling 10 is disposed between the first half-shaft gear set 4 and the second half-shaft gear set 5. The auxiliary tooling 10 includes a first top block 1 and a second top block 2. The first top block 1 abuts against the first half-shaft gear set 4, and the second top block 2 abuts against the second half-shaft gear set 5. The first top block 1 is provided with a stud 11, and the second top block 2 is provided with a screw hole 21 that mates with the stud 11, so that when the first top block 1 and the second top block 2 rotate relative to each other, the first top block 1 and the second top block 2 can move away from each other to compress the first half-shaft gear set 4 and the second half-shaft gear set 5.

[0034] For example, the first half-shaft gear set 4 includes a first half-shaft gear and a first wave washer, the first wave washer being disposed between the first half-shaft gear and the differential housing 3. The second half-shaft gear set 5 includes a second half-shaft gear and a second wave washer, the second wave washer being disposed between the second half-shaft gear and the differential housing 3. When assembling the differential 20, the first wave washer or the second wave washer can be placed inside the differential housing 3 first, and then the first half-shaft gear and the second half-shaft gear can be installed between the first wave washer and the second wave washer. Then, the auxiliary tooling 10 is placed inside the differential housing 3. At this time, the first top block 1 abuts against the first half-shaft gear, and the second top block 2 abuts against the second half-shaft gear. Since the first top block 1 or the second top block 2 is engaged by the stud 11 and the threaded hole 21, by rotating the first top block 1 or the second top block 2 (e.g., clockwise rotation), the first top block 1 and the second top block 2 can be moved away from each other, thereby distributing pressure through the first half-shaft gear and the second half-shaft gear respectively. The gears transmit power to the first and second wave washers, which can deform, thereby increasing the distance between the first and second half-shaft gears. This facilitates the installation of the planetary gear 6 between the first and second half-shaft gears. After the first and second half-shaft gears are installed, the first top block 1 or the second top block 2 can be rotated in the opposite direction (e.g., counterclockwise) to bring the first top block 1 and the second top block 2 closer together. At this time, the first top block 1 and the first half-shaft gear, and the second top block 2 and the second half-shaft gear can be separated from each other respectively. During this process, the first and second wave washers can recover their elastic deformation, thereby driving the first and second half-shaft gears closer together, so that both the first and second half-shaft gears mesh with the planetary gear 6, thus completing the assembly of the differential 20. The operation is simple and convenient, which can reduce the assembly difficulty of the differential 20 and improve the assembly efficiency of the differential 20.

[0035] The above example only uses a wave washer as an example for illustration, but it cannot be regarded as a limitation of this application. For example, an arc-shaped thrust washer can also be set between the half-shaft gear and the differential housing 3.

[0036] In addition, the auxiliary tooling 10 of this application only includes a first top block 1 and a second top block 2, which has a simple structure. The distance between the first top block 1 and the second top block 2 is adjusted by means of a threaded engagement between the stud 11 and the screw hole 21, which is convenient to operate and the operation accuracy can be well controlled.

[0037] According to the auxiliary tooling 10 of the present application embodiment, the distance between the first top block 1 and the second top block 2 is adjusted by means of a threaded engagement between the stud 11 and the screw hole 21, which can better compress the first half-shaft gear set 4 and the second half-shaft gear set 5, thereby facilitating the assembly of the planetary gear 6. Moreover, the auxiliary tooling 10 of the present application has a simple structure and is easy to operate, which helps to reduce the assembly difficulty of the differential 20 and improve the assembly efficiency of the differential 20.

[0038] In some embodiments of this application, the first top block 1 is provided with a first driving part, and the first top block 1 is adapted to drive the first top block 1 to rotate through the first driving part.

[0039] In other words, such as Figures 1-3 As shown, after the auxiliary tooling 10 presses against the first half-shaft gear set 4 and the second half-shaft gear set 5 respectively by the first top block 1 and the second top block 2, the second top block 2 can be kept stationary. The first top block 1 can be driven to rotate by the first drive unit alone, so that the stud 11 can rotate in the screw hole 21 to adjust the distance between the first top block 1 and the second top block 2. The operation is simple and convenient.

[0040] For example, the way to keep the second top block 2 stationary can be to adjust the distance between the first top block 1 and the second top block 2 to an appropriate distance beforehand outside the differential housing 3, so that the second top block 2 can abut against the second half-shaft gear set 5, and the second top block 2 is basically in a state of not being easily rotated by friction; or the second top block 2 can be clamped by a clamping member. This application will not elaborate on this. At the same time, the way to keep the first top block 1 stationary in the following example will not be elaborated on below.

[0041] In the above-mentioned technical method, the first top block 1 can be driven to rotate by the first driving part, which can make the stud 11 rotate in the screw hole 21 to adjust the distance between the first top block 1 and the second top block 2. The operation method is simple and convenient.

[0042] In some embodiments of this application, such as Figures 1-3 As shown, the first drive unit includes a groove 12, which is disposed on the side of the first top block 1 away from the stud 11. The groove 12 is opposite to the shaft hole 41 of the first half-shaft gear set 4, and a limited rotating surface is provided in the groove 12.

[0043] In other words, a rod-shaped adjusting rod can be inserted along the shaft hole 41 of the first half-shaft gear set 4. The end of the adjusting rod can be inserted into the groove 12, thereby driving the first top block 1 to rotate by rotating the adjusting rod. It can be understood that the groove 12 is arranged at the end of the first top block 1 along the axial direction of the first half-shaft gear set 4. When the first top block 1 rotates, the groove 12 and the adjusting rod are less likely to interfere with the components in the differential 20, which is beneficial to the use of the auxiliary tooling 10 and can also help improve the assembly efficiency of the differential 20. After the adjusting rod is inserted into the groove 12, the relative rotation between the adjusting rod and the first top block 1 can be restricted by the rotation limiting surface, so that the adjusting rod can drive the first top block 1 to rotate better.

[0044] Additionally, it should be noted that the adjusting rod mentioned in the above example is only for the purpose of illustrating that the first top block 1 can be driven by inserting a rod-shaped structural component into the groove 12. The adjusting rod does not need to be designed separately and can be adjusted directly using existing tools such as screwdrivers, thereby reducing the production cost of the auxiliary tooling 10. Of course, the adjusting rod can also be designed separately according to actual needs, and this application does not impose any restrictions on this.

[0045] For example, at least one rotation limiting surface can be provided in the groove 12, that is, one rotation limiting surface can be provided in the groove 12, or two or more rotation limiting surfaces can be provided. This application does not limit this. Correspondingly, the adjusting rod can be provided with a mating surface, which can fit with the rotation limiting surface. The size and number of the mating surface can be set according to the size and number of the rotation limiting surface in the groove 12. This application does not limit this.

[0046] In the above-mentioned technical method, along the axial direction of the first half-shaft gear set 4, the groove 12 is arranged at the end of the first top block 1. When the first top block 1 rotates, the groove 12 and the adjusting rod are less likely to interfere with the components in the differential 20, which is beneficial to the use of the auxiliary tooling 10 and can also help improve the assembly efficiency of the differential 20.

[0047] In some embodiments of this application, such as Figures 1-3 As shown, the cross-sectional shape of the groove 12 is polygonal within the section perpendicular to the shaft hole 41.

[0048] For example, the shape of the polygon can be a triangle, quadrilateral, pentagon, hexagon, etc., and this application does not limit it.

[0049] In a specific example, the cross-sectional shape of the groove 12 can be hexagonal, so that when adjusting the first top block 1, an Allen wrench can be inserted into the groove 12 and then rotated.

[0050] In the above-mentioned technical method, by making the cross-sectional shape of the groove 12 polygonal, the relative position of the adjusting rod and the first top block 1 in the rotation direction can be better restricted during rotation, so that when the adjusting rod drives the first top block 1 to rotate, the adjusting rod and the first top block 1 are less likely to slip, thereby improving the stability of the auxiliary tooling 10.

[0051] In some embodiments of this application, such as Figures 1-3 As shown, the first driving part may also include a protrusion. The protrusion is disposed on the side of the first top block 1 away from the stud 11. The protrusion is opposite to the shaft hole 41 of the first half-shaft gear set 4. A rotation limiting surface may also be provided on the outer peripheral side of the protrusion. Thus, an adjusting rod with a concave structure can be inserted into the protrusion along the shaft hole 41, and the relative rotation between the adjusting rod and the first top block 1 can be limited by the rotation limiting surface. Thus, the adjusting rod can drive the first top block to rotate through the cooperation of the protrusion and the concave structure.

[0052] In some embodiments, the first driving part may also be a recessed hole provided on the outer periphery of the first top block 1. The structure of the recessed hole and the driving form of the first top block may be the same as the locking hole 22 described below, which will not be described in detail in this application.

[0053] Based on the above examples, this application does not impose any restrictions on the structural form of the first drive unit.

[0054] In some embodiments of this application, the second top block 2 is provided with a second driving part, and the second top block 2 is adapted to be driven to rotate by the second driving part.

[0055] In other words, after the auxiliary tooling 10 presses against the first half-shaft gear set 4 and the second half-shaft gear set 5 respectively through the first top block 1 and the second top block 2, the first top block 1 can remain stationary, and the second top block 2 can be driven to rotate by the second drive unit alone, so that the stud 11 can rotate in the screw hole 21 to adjust the distance between the first top block 1 and the second top block 2. The operation is simple and convenient.

[0056] In the above-mentioned technical method, the second top block 2 can be driven to rotate by the second driving part, which can make the stud 11 rotate in the screw hole 21 to adjust the distance between the first top block 1 and the second top block 2. The operation method is simple and convenient.

[0057] In some embodiments of this application, such as Figures 1-3 As shown, the second top block 2 includes at least one locking hole 22, which is formed by a recess in the outer peripheral surface of the second top block 2. When there are multiple locking holes 22, the multiple locking holes 22 are arranged at intervals along the circumference of the second top block 2.

[0058] In other words, the second top block 2 can be driven to rotate by inserting a rod-shaped drive rod into the locking hole 22 through the window of the differential housing 3. It can be understood that the locking hole 22 is recessed inward in the circumferential direction of the second top block 2, so it is not easy to interfere with the components inside the differential housing 3. When adjusting the second top block 2, it is only necessary to insert the drive rod. The adjustment method is simple and convenient, which can help the use of the auxiliary tooling 10 and improve the assembly efficiency of the differential 20.

[0059] Additionally, it should be noted that the driving rod mentioned in the above example is only for the purpose of illustrating that the second top block 2 can be driven by inserting a rod-shaped structural component into the locking hole 22. The driving rod does not need to be designed separately and can be adjusted directly using existing screwdrivers and other tools, thereby reducing the production cost of the auxiliary tooling 10.

[0060] For example, when multiple locking holes 22 are provided, it is advantageous to ensure that there is always a locking hole 22 at the window of the differential housing 3, thereby facilitating the control of the auxiliary tooling 10.

[0061] In the above-mentioned technical method, when adjusting the second top block 2, it is only necessary to insert the drive rod. The adjustment method is simple and convenient, which can help the use of the auxiliary tooling 10 and improve the assembly efficiency of the differential 20.

[0062] In some embodiments of this application, such as Figures 1-3 As shown, the second driving part may include a locking groove, which may be provided on the side of the second top block 2 away from the first top block 1. In the radial direction of the screw hole 21, the locking groove is spaced apart from the screw hole 21, and both the locking groove and the screw hole 21 are opposite to the shaft hole of the second half-shaft gear set 5. Multiple locking grooves may be provided, which are spaced apart and surround the outer periphery of the screw hole 21. The driving rod may be provided with at least two extension parts, each of which can extend into a locking groove, thereby better driving the rotation of the second top block 2.

[0063] Alternatively, the locking groove can also be formed as an arc around the screw hole 21, and a rotation limiting surface can also be provided in the locking groove. After the end of the drive rod extends into the locking groove, the rotation limiting surface can restrict the relative rotation between the drive rod and the second top block 2, so that the drive rod can drive the second top block 2 to rotate better.

[0064] Based on the above examples, this application does not impose any restrictions on the structural form of the second drive unit.

[0065] In a specific example of this application, such as Figures 1-3As shown, the first top block 1 may include the groove 12 of the example above, and the second top block 2 may include the locking hole 22 of the example above. Thus, when using the auxiliary tooling 10, the first half-shaft gear set 4 can be fixed by inserting the adjusting rod into the groove 12. Then, after the driving rod engages with the locking hole 22, the second top block 2 can be rotated by pushing the driving rod. Alternatively, the second top block 2 can be fixed by engaging the driving rod with the locking hole 22, and the first top block 1 can be rotated by rotating the adjusting rod. Or, the adjusting rod and the driving rod can be moved simultaneously, causing the first top block 1 and the second top block 2 to rotate in opposite directions at the same time. This application does not limit this.

[0066] In some embodiments of this application, the locking hole 22 is a blind hole.

[0067] In the above-mentioned technical method, by making the locking hole 22 a blind hole, the driving rod is less likely to penetrate into the screw hole 21 when it is engaged with the locking hole 22. As a result, it is less likely to damage the threads and studs 11 in the screw hole 21, thereby improving the reliability of the auxiliary tooling 10.

[0068] In some embodiments of this application, such as Figures 1-3 As shown, screw hole 21 is a through hole that penetrates the second top block 2.

[0069] In the above-mentioned technical method, by making the screw hole 21 a through hole that penetrates the second top block 2, the stud 11 can pass through the second top block 2 well. The feed amount of the stud 11 can be controlled by controlling only the axial length of the stud 11, which can reduce the thickness requirement of the second top block 2, thereby reducing the processing difficulty of the second top block 2. At the same time, the processing method of the through hole is simple, which is conducive to reducing production costs.

[0070] In some embodiments of this application, such as Figures 1-3 As shown, the second top block 2 has a first protrusion structure 23 on its side facing the first top block 1. In the radial direction of the screw hole 21, the outer peripheral surface of the first protrusion structure 23 is located on the side of the outer peripheral surface of the second top block 2 that is close to the screw hole 21.

[0071] In the above technical method, after the first top block 1 and the second top block 2 abut against each other, by setting the first protrusion structure 23, the end of the second top block 2 facing the first top block 1 also has a gap with the first top block 1 in the circumferential direction, thereby avoiding the problem that the first top block 1 and the second top block 2 are not easy to separate after they are attached.

[0072] For example, the first protrusion structure 23 may be a protruding post, an annular ring around the axis of the second half-shaft gear set 5, or a protruding hull, etc. This application does not limit it in this way.

[0073] In some embodiments of this application, such as Figures 1-3As shown, the first top block 1 has a second protrusion structure on its side facing the second top block 2. In the radial direction of the stud 11, the outer peripheral surface of the second protrusion structure is located on the side of the outer peripheral surface of the first top block 1 close to the stud 11, and in the axial direction of the stud 11, the size of the second protrusion structure is smaller than the size of the stud 11.

[0074] In the above technical method, after the first top block 1 and the second top block 2 abut against each other, by setting a second protruding structure, the end of the first top block 1 facing the second top block 2 also has a gap with the second top block 2 in the circumferential direction, thereby avoiding the problem that the first top block 1 and the second top block 2 are not easy to separate after they are attached.

[0075] For example, the second protrusion structure can be a protruding post, an annular ring around the axis of the second half-shaft gear set 5, or a protruding hull, etc., and this application does not limit it.

[0076] This application also proposes a vehicle that includes a differential 20 assembled using the auxiliary tooling 10 described in the above embodiments.

[0077] According to the present application, by using the auxiliary tooling 10 of the above embodiment to assemble the differential 20, the assembly difficulty of the differential 20 can be reduced and the assembly efficiency of the differential 20 can be improved, thereby reducing the production cost of the differential 20 and thus reducing the production cost of the vehicle.

[0078] The auxiliary tooling 10 and other components and operations of the vehicle according to the embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0079] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," 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.

[0080] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An auxiliary tooling (10) for assembling a differential (20), the differential (20) comprising a differential housing (3), a first half-shaft gear set (4), and a second half-shaft gear set (5), the first half-shaft gear set (4) and the second half-shaft gear set (5) being disposed within the differential housing (3), the auxiliary tooling (10) being disposed between the first half-shaft gear set (4) and the second half-shaft gear set (5), characterized in that, The auxiliary tooling (10) includes: The first top block (1) abuts against the first half-shaft gear set (4); The second top block (2) abuts against the second half-shaft gear set (5), wherein, The first top block (1) is provided with a stud (11), and the second top block (2) is provided with a screw hole (21) that mates with the stud (11), so that when the first top block (1) and the second top block (2) rotate relative to each other, the first top block (1) and the second top block (2) can move away from each other, so as to compress the first half-shaft gear set (4) and the second half-shaft gear set (5).

2. The auxiliary tooling (10) according to claim 1, characterized in that, The first top block (1) is provided with a first driving part, and the first top block (1) is adapted to drive the first top block (1) to rotate through the first driving part.

3. The auxiliary tooling (10) according to claim 2, characterized in that, The first drive unit includes a groove (12), which is disposed on the side of the first top block (1) away from the stud (11). The groove (12) is opposite to the shaft hole (41) of the first half-shaft gear set (4), and a limited rotating surface is provided in the groove (12).

4. The auxiliary tooling (10) according to claim 3, characterized in that, Within a cross section perpendicular to the shaft hole (41), the cross-sectional shape of the groove (12) is polygonal.

5. The auxiliary tooling (10) according to claim 1, characterized in that, The second top block (2) is provided with a second driving part, and the second top block (2) is adapted to drive the second top block (2) to rotate through the second driving part.

6. The auxiliary tooling (10) according to claim 5, characterized in that, The second top block (2) includes at least one locking hole (22), which is formed by a recess in the outer peripheral surface of the second top block (2). When there are multiple locking holes (22), the multiple locking holes (22) are arranged at intervals along the circumference of the second top block (2).

7. The auxiliary tooling (10) according to claim 6, characterized in that, The locking hole (22) is a blind hole.

8. The auxiliary tooling (10) according to claim 1, characterized in that, The screw hole (21) is a through hole that penetrates the second top block (2).

9. The auxiliary tooling (10) of claim 1, wherein, The second top block (2) has a first protrusion structure (23) on its side facing the first top block (1). In the radial direction of the screw hole (21), the outer peripheral surface of the first protrusion structure (23) is located on the side of the outer peripheral surface of the second top block (2) close to the screw hole (21).

10. The auxiliary tool (10) according to claim 1, characterized in that The first top block (1) has a second protrusion structure on its side facing the second top block (2). In the radial direction of the stud (11), the outer peripheral surface of the second protrusion structure is located on the side of the outer peripheral surface of the first top block (1) close to the stud (11). In the axial direction of the stud (11), the size of the second protrusion structure is smaller than the size of the stud (11).

Images