Half shaft assembly, differential mechanism assembly and vehicle

Abstract

The invention provides a half shaft assembly, a differential mechanism assembly and a vehicle. The half shaft assembly comprises a half shaft, a half shaft gear and a limiting structural part, the half shaft and the half shaft gear are arranged in a sleeving mode and connected in a meshed mode, the limiting structural part is arranged between the half shaft and the half shaft gear, and the half shaft and the half shaft gear are subjected to play limiting through the limiting structural part; the half axle gear comprises a transmission hole, and the half axle gear is arranged on the half axle in a sleeving mode through the transmission hole. The limiting structural part comprises a clamping part and a limiting part, the clamping part is arranged on the half shaft and protrudes out of the outer circumferential face of the half shaft in the radial direction, the clamping part is distributed in the circumferential direction of the half shaft in an extending mode, the limiting part is arranged on the half shaft gear and sinks towards the interior of the half shaft gear from the inner surface of the transmission hole, and the clamping part and the limiting part are connected in a clearance fit mode. According to the half shaft assembly, the differential mechanism assembly and the vehicle, axial movement of the half shaft can be limited, and impact and abrasion of the axial movement of the half shaft on other parts in the differential mechanism are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular, to a half shaft assembly, a differential assembly and a vehicle. Background Art

[0002] The differential is a core part of a vehicle and can control the speed balance of the tires on both sides of the vehicle to enable the vehicle to run smoothly. The differential controls the speed balance of the tires on both sides through the cooperation of the half shafts and the half shaft gears on both sides.

[0003] However, when the current half shaft is matched with the half shaft gear, since the two are connected by meshing, a large axial movement amount will occur during the transmission process. The axial movement of the half shaft will impact and wear other parts in the differential. Summary of the Invention

[0004] The half shaft assembly, the differential assembly and the vehicle provided by the present application can limit the axial movement of the half shaft and avoid the impact and wear of the half shaft on other parts in the differential.

[0005] The present application provides a half shaft assembly, which includes a half shaft and a half shaft gear that are sleeved and meshed with each other, and a limiting structural member disposed between the half shaft and the half shaft gear. The half shaft and the half shaft gear limit the movement through the limiting structural member; the half shaft gear includes a transmission hole, and the half shaft gear is sleeved on the half shaft through the transmission hole; the limiting structural member includes a clamping portion and a limiting portion. The clamping portion is disposed on the half shaft and protrudes radially from the outer peripheral surface of the half shaft, and the clamping portion extends and distributes along the circumferential direction of the half shaft. The limiting portion is disposed on the half shaft gear and is recessed from the inner surface of the transmission hole into the half shaft gear. The clamping portion and the limiting portion are connected by means of clearance fit.

[0006] For the above half shaft assembly, along the axial direction of the half shaft gear, the limiting portion has two side walls arranged at intervals, and there is a gap D between the clamping portion and the side walls. The gap D has the following range: 0.5 mm ≤ D ≤ 1 mm.

[0007] For the above half shaft assembly, the two side walls are arranged at a preset angle A. The preset angle A has the following range: 50° ≤ A ≤ 90°.

[0008] For the above half shaft assembly, the clamping portion is made of an elastic material, and the clamping portion is an annular structure, and the annular structure is sleeved on the outer peripheral surface of the half shaft.

[0009] For the above half shaft assembly, the annular structure of the clamping portion has a clamping opening, and the half shaft is clamped and matched with the clamping portion through the clamping opening.

[0010] The half - shaft assembly as described above, wherein the half - shaft has a mounting portion recessed in its outer peripheral surface, at least a part of the clamping portion is clamped in the mounting portion, and along the axial direction of the half - shaft, the mounting portion and the limiting portion are arranged opposite to each other.

[0011] The half - shaft assembly as described above, wherein, along the circumferential direction of the half - shaft, the mounting portion is arranged to surround the half - shaft for one week.

[0012] The half - shaft assembly as described above, wherein, along the circumferential direction of the transmission hole, the limiting portion is arranged to surround the inner surface of the transmission hole for one week.

[0013] On the other hand, the present application also provides a differential assembly, which includes the above - mentioned half - shaft assembly.

[0014] On another aspect, the present application also provides a vehicle, which includes the above - mentioned differential assembly.

[0015] The half - shaft assembly of the present application includes a half - shaft and a half - shaft gear that are sleeved and meshed with each other, and a limiting structural member arranged between the half - shaft and the half - shaft gear. The half - shaft gear includes a transmission hole, and the half - shaft gear is sleeved on the half - shaft through the transmission hole. The half - shaft and the transmission hole are meshed and connected to realize the transmission between the half - shaft and the half - shaft gear. The limiting structural member includes a clamping portion and a limiting portion. The clamping portion is arranged on the half - shaft and protrudes radially from the outer peripheral surface of the half - shaft. The limiting portion is arranged on the half - shaft gear and is recessed from the inner surface of the transmission hole towards the inside of the half - shaft gear. When the half - shaft gear is sleeved on the outer peripheral surface of the half - shaft through the transmission hole, the clamping portion protruding from the outer peripheral surface of the half - shaft can be in clamping fit with the limiting portion recessed from the inner surface of the transmission hole, and the clamping portion extends and distributes along the circumferential direction of the half - shaft. Thus, when the clamping portion is clamped in the limiting portion, it can be blocked by the limiting portion axially. In the case of clearance fit connection between the clamping portion and the limiting portion, the connection between the clamping portion and the limiting portion is tight enough to limit the axial movement of the clamping portion, and further limit the axial movement of the half - shaft, avoiding the axial movement of the half - shaft from impacting and wearing other parts in the differential. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the half - shaft assembly provided by the embodiment of the present application;

[0017] Figure 2 It is a schematic diagram of the structure of the half - shaft gear of the half - shaft assembly provided by the embodiment of the present application;

[0018] Figure 3 It is a cross - sectional view of the differential assembly provided by the embodiment of the present application;

[0019] Figure 4 It is an exploded view of the differential assembly provided by the embodiment of the present application;

[0020] Figure 5Schematic diagram of the limiting structural member of the half shaft assembly provided by the embodiment of the present application.

[0021] Description of the reference numerals in the drawings:

[0022] 10. Half shaft; 11. Installation part; 20. Limiting structural member; 21. Clamping part; 22. Limiting part; 221. Side wall; 30. Half shaft gear; 31. Transmission hole. Detailed implementation manners

[0023] In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other.

[0024] Many specific details are set forth in the following description in order to fully understand the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all the embodiments.

[0025] Figure 4 Exploded view of the differential assembly of the embodiment of the present application; Figure 1 Schematic diagram of the structure of the half shaft assembly, and also Figure 4 Cross-sectional view of the half shaft assembly part in the A-A direction in Figure 2 Cross-sectional view of the half shaft gear 30 along Figure 4 in the A-A direction, showing the structure of the inner surface of the half shaft gear 30; Figure 3 For Figure 4 Cross-sectional view of the differential assembly in Figure 5 Schematic diagram of the limiting structural member of the half shaft assembly provided by the embodiment of the present application.

[0026] As Figures 1 to 5 shown, the embodiment of the present application provides a half shaft assembly, which includes a half shaft 10 and a half shaft gear 30 that are sleeved and meshed with each other, and a limiting structural member 20 disposed between the half shaft 10 and the half shaft gear 30. The half shaft 10 and the half shaft gear 30 are restricted from moving axially through the limiting structural member 20; the half shaft gear 30 includes a transmission hole 31, and the half shaft gear 30 is sleeved on the half shaft 10 through the transmission hole 31; the limiting structural member 20 includes a clamping part 21 and a limiting part 22. The clamping part 21 is disposed on the half shaft 10 and protrudes radially from the outer peripheral surface of the half shaft 10, and the clamping part 21 extends circumferentially along the half shaft 10. The limiting part 22 is disposed on the half shaft gear 30 and recesses from the inner surface of the transmission hole 31 into the half shaft gear 30. The clamping part 21 and the limiting part 22 are connected by means of clearance fit.

[0027] In specific implementation, the half shaft assembly of the present application includes a half shaft 10 and a differential gear 30 that are sleeved and meshed with each other, and a limiting structural member 20 disposed between the half shaft 10 and the differential gear 30. The differential gear 30 includes a transmission hole 31. The differential gear 30 is sleeved on the half shaft 10 through the transmission hole 31. The half shaft 10 and the differential gear 30 are meshed and connected to achieve the transmission between the half shaft 10 and the differential gear 30. The limiting structural member 20 includes a clamping portion 21 and a limiting portion 22. The clamping portion 21 is disposed on the half shaft 10 and protrudes radially from the outer peripheral surface of the half shaft 10. The limiting portion 22 is disposed on the differential gear 30 and is recessed from the inner surface of the transmission hole 31 toward the inside of the differential gear 30. When the differential gear 30 is sleeved on the outer peripheral surface of the half shaft 10 through the transmission hole 31, the clamping portion 21 protruding from the outer peripheral surface of the half shaft 10 can be clamped and matched with the limiting portion 22 recessed from the inner surface of the transmission hole 31, and the clamping portion 21 extends and distributes along the circumferential direction of the half shaft 10, so that when the clamping portion 21 is clamped in the limiting portion 22, it can be blocked by the limiting portion 22 in the axial direction. In the case of clearance fit connection between the clamping portion 21 and the limiting portion 22, the connection between the clamping portion 21 and the limiting portion 22 is tight enough to limit the axial movement of the clamping portion 21, and further limit the axial movement of the half shaft 10 connected to the clamping portion 21, avoiding the impact and wear on other parts caused by the axial movement of the half shaft 10.

[0028] As Figure 5 shown, for the half shaft assembly of the embodiment of the present application, along the axial direction of the differential gear 30, the limiting portion 22 has two side walls 221 arranged at intervals, and there is a gap D between the clamping portion 21 and the side wall 221. The gap D has the following range: 0.5 mm ≤ D ≤ 1 mm.

[0029] In specific implementation, setting the maximum value of the gap D to 1 mm can ensure that the axial movement of the clamping portion 21 is restricted, thereby restricting the axial movement of the half shaft 10 and avoiding the impact and wear on other parts caused by the axial movement of the half shaft 10. Setting the minimum value of the gap D to 0.5 mm makes the resistance of the clamping portion 21 against the side wall 221 smaller during installation, and the clamping portion 21 can be smoothly clamped between the two side walls 221, reducing the installation difficulty of the half shaft 10.

[0030] As Figure 5 shown, for the half shaft assembly of the embodiment of the present application, the two side walls 221 are arranged at a preset angle A. The preset angle A has the following range: 50° ≤ A ≤ 90°.

[0031] During specific implementation, within the range of the preset angle A, the minimum value of the preset angle A being 50° can ensure that the side wall 221 has a certain inclination angle, enabling the clamping portion 21 to be more easily installed into the limiting portion 22 for clamping fit when the half shaft 10 and the half shaft gear 30 are assembled; the maximum value of the preset angle A being 90° can ensure that when the clamping portion 21 is clamped between the two side walls 221, there is sufficient frictional force between the clamping portion 21 and the two side walls 221, avoiding excessive play of the clamping portion 21 and thus preventing excessive play of the half shaft 10.

[0032] Specifically, the limiting portion 22 is a trapezoidal groove structure or a V-shaped groove structure, and the two side walls 221 of the trapezoidal groove structure and the V-shaped groove structure can be arranged at a preset angle A, enabling the clamping portion 21 to be clamped in the trapezoidal groove structure or the V-shaped groove structure.

[0033] As Figures 1 to 3 shown, for the half shaft assembly of the embodiment of the present application, the clamping portion 21 is made of an elastic material, and the clamping portion 21 is an annular structure, and the annular structure is sleeved on the outer peripheral surface of the half shaft 10.

[0034] During specific implementation, the elastic and annular clamping portion 21 is adapted to the outer peripheral surface shape of the half shaft 10, and can expand the diameter of the annular structure under the action of an external tool and be sleeved on the outer peripheral surface of the half shaft 10. After being sleeved, the elastic annular structure restores its elastic deformation and can be tightly connected to the outer peripheral surface of the half shaft 10, ensuring the clamping effect between the clamping portion 21 and the half shaft 10, avoiding sliding between the clamping portion 21 itself and the half shaft 10, and thus preventing large axial play of the half shaft 10, and being able to avoid impact and wear of the half shaft 10 on other parts.

[0035] For the half shaft assembly of the embodiment of the present application, the annular structure of the clamping portion 21 has a clamping opening, and the half shaft 10 is in clamping fit with the clamping portion 21 through the clamping opening.

[0036] During specific implementation, since the clamping portion 21 is made of an elastic material and has a certain elasticity, the open clamping opening of the clamping portion 21 can be expanded so that the half shaft 10 can enter the inside of the clamping portion 21 through the clamping opening for clamping fit. After restoring the size of the clamping opening, the half shaft 10 can be clamped inside the clamping portion 21 to achieve stable connection between the two. The setting of the clamping opening facilitates the operation of the operator to cause elastic deformation of the clamping portion 21, making the operation process of the operator more labor-saving.

[0037] Specifically, the clamping portion 21 is a snap ring. The operator can use a tool to expand the clamping opening of the snap ring and snap the half shaft 10 into the snap ring. After the snap ring restores its elastic deformation, the clamping of the half shaft 10 and the snap ring can be achieved.

[0038] The half - shaft assembly of the embodiment of the present application, wherein the half - shaft 10 has a mounting portion 11 recessed in its outer peripheral surface, at least a part of the clamping portion 21 is clamped in the mounting portion 11, and along the axial direction of the half - shaft 10, the mounting portion 11 and the limiting portion 22 are arranged opposite to each other.

[0039] During specific implementation, the arrangement that the mounting portion 11 and the limiting portion 22 are opposite to each other enables the clamping portion 21 to be directly assembled into the mounting portion 11 when assembled with the half - shaft 10, facilitating the positioning of the clamping portion 21. Moreover, the recessed setting of the mounting portion 11 enables the clamping portion 21 to be snapped into the mounting portion 11, avoiding axial movement between the clamping portion 21 and the half - shaft 10, realizing stable connection between the two, so that the half - shaft 10 can be restricted by the limiting portion 22 in its axial direction, reducing axial movement.

[0040] As Figures 1 to 3 shown, for the half - shaft assembly of the embodiment of the present application, wherein, along the circumferential direction of the half - shaft 10, the mounting portion 11 is arranged to surround the half - shaft 10 for one week.

[0041] During specific implementation, the arrangement that the mounting portion 11 surrounds the half - shaft 10 for one week enables the whole clamping portion 21 to be clamped into the mounting portion 11, increasing the clamping - fit area between the clamping portion 21 and the mounting portion 11, thereby enhancing the connection stability between the two, so that the half - shaft 10 can be stably restricted by the limiting portion 22 in its axial direction, reducing the axial movement of the half - shaft 10.

[0042] As Figure 2 shown, for the half - shaft assembly of the embodiment of the present application, wherein, along the circumferential direction of the transmission hole 31, the limiting portion 22 is arranged to surround the inner surface of the transmission hole 31 for one week.

[0043] During specific implementation, the arrangement that the limiting portion 22 surrounds the inner surface of the transmission hole 31 for one week enables the part of the clamping portion 21 protruding from the half - shaft 10 to be fully clamped and fitted with the limiting portion 22, ensuring the clamping - fit area between the clamping portion 21 and the limiting portion 22, reducing the axial movement of the clamping portion 21, and thus reducing the axial movement of the half - shaft 10 that is clamped and fitted with the clamping portion 21, avoiding impact and wear on other parts by the half - shaft.

[0044] As Figure 3 and Figure 4 shown, the embodiment of the present application further provides a differential assembly, which includes the above - mentioned half - shaft assembly.

[0045] The embodiment of the present application further provides a vehicle, which includes the above - mentioned differential assembly.

[0046] In specific implementation, the vehicle of the embodiment of the present application includes a differential assembly. The differential assembly includes a half-shaft assembly. The half-shaft assembly includes a half-shaft 10 and a half-shaft gear 30 that are sleeved and meshed with each other, and a limiting structural member 20 disposed between the half-shaft 10 and the half-shaft gear 30. The half-shaft gear 30 includes a transmission hole 31. The half-shaft gear 30 is sleeved on the half-shaft 10 through the transmission hole 31. The half-shaft 10 is meshed with the half-shaft gear 30 to achieve the transmission between the half-shaft 10 and the half-shaft gear 30. The limiting structural member 20 includes a clamping portion 21 and a limiting portion 22. The clamping portion 21 is disposed on the half-shaft 10 and protrudes radially from the outer peripheral surface of the half-shaft 10. The limiting portion 22 is disposed on the half-shaft gear 30 and is recessed from the inner surface of the transmission hole 31 into the interior of the half-shaft gear 30. When the half-shaft gear 30 is sleeved on the outer peripheral surface of the half-shaft 10 through the transmission hole 31, the clamping portion 21 protruding from the outer peripheral surface of the half-shaft 10 can be clamped and matched with the limiting portion 22 recessed from the inner surface of the transmission hole 31. Moreover, the clamping portion 21 extends and distributes along the circumferential direction of the half-shaft 10, so that when the clamping portion 21 is clamped in the limiting portion 22, it can be blocked by the limiting portion 22 in the axial direction. In the case of the clearance fit connection between the clamping portion 21 and the limiting portion 22, the connection between the clamping portion 21 and the limiting portion 22 is tight enough to limit the axial movement of the clamping portion 21, and further limit the axial movement of the half-shaft 10 connected to the clamping portion 21, avoiding the impact and wear on other parts caused by the axial movement of the half-shaft 10.

[0047] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A half shaft assembly, characterized in that, it includes a half shaft (10) and a half shaft gear (30) which are sleeved with each other and meshed and connected, and a limit structural member (20) arranged between the half shaft (10) and the half shaft gear (30), and the half shaft (10) and the half shaft gear (30) are restricted from moving axially through the limit structural member (20); the half shaft gear (30) includes a transmission hole (31), and the half shaft gear (30) is sleeved on the half shaft (10) through the transmission hole (31); the limit structural member (20) includes a clamping portion (21) and a limiting portion (22), the clamping portion (21) is arranged on the half shaft (10) and protrudes radially from the outer peripheral surface of the half shaft (10), and the clamping portion (21) extends and distributes along the circumferential direction of the half shaft (10), the limiting portion (22) is arranged on the half shaft gear (30) and is recessed from the inner surface of the transmission hole (31) into the half shaft gear (30), and the clamping portion (21) and the limiting portion (22) are connected by a clearance fit manner.

2. The half shaft assembly according to claim 1, characterized in that, along the axial direction of the half shaft gear (30), the limiting portion (22) has two side walls (221) arranged at intervals, there is a gap D between the clamping portion (21) and the side wall (221), and the gap D has the following range: 0.5mm ≤ D ≤ 1mm.

3. The half shaft assembly according to claim 2, characterized in that, the two side walls (221) are arranged at a preset angle A, and the preset angle A has the following range: 50° ≤ A ≤ 90°.

4. The half shaft assembly according to claim 1, characterized in that, the clamping portion (21) is made of an elastic material, the clamping portion (21) is an annular structure, and the annular structure is sleeved on the outer peripheral surface of the half shaft (10).

5. The half shaft assembly according to claim 4, characterized in that, the annular structure of the clamping portion (21) has a clamping opening, and the half shaft (10) is clamped and matched with the clamping portion (21) through the clamping opening.

6. The half shaft assembly according to claim 1, characterized in that, the half shaft (10) has a mounting portion (11) recessed in its outer peripheral surface, at least part of the clamping portion (21) is clamped in the mounting portion (11), and along the axial direction of the half shaft (10), the mounting portion (11) is arranged opposite to the limiting portion (22) in position.

7. The half shaft assembly according to claim 6, characterized in that, along the circumferential direction of the half shaft (10), the mounting portion (11) surrounds the half shaft (10) for one week.

8. The half shaft assembly according to claim 1, characterized in that, along the circumferential direction of the transmission hole (31), the limiting portion (22) surrounds the inner surface of the transmission hole (31) for one week.

9. A differential assembly, characterized in that, it includes the half shaft assembly according to any one of claims 1 to 8.

10. A vehicle, characterized in that, Comprising a differential assembly as described in claim 9.

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