Connecting structure of vehicle and vehicle

Abstract

The utility model discloses a connecting structure of a vehicle and the vehicle. The connecting structure comprises a vehicle driving shaft, a mounting hole is formed in the speed reducer, and the vehicle driving shaft is arranged in the mounting hole in a penetrating manner; the clamping spring is arranged on the vehicle driving shaft in a sleeving mode and located between the vehicle driving shaft and the speed reducer; wherein the clamping spring is provided with a first abutting part and a second abutting part, and the first abutting part and the second abutting part abut against the two opposite sides of the vehicle driving shaft so that the clamping spring can be positioned on the vehicle driving shaft. According to the utility model, the first abutting part and the second abutting part are arranged to abut against the two opposite sides of the vehicle driving shaft, so that the clamp spring is positioned on the vehicle driving shaft, and in the process of installing the vehicle driving shaft in an installing hole, the clamp spring is prevented from shaking, the assembling difficulty is reduced, and the risk that the clamp spring interferes with the inner wall of the installing hole is reduced; the assembling convenience and the connecting reliability are improved, the requirement for assembling workers is lowered, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a vehicle connection structure and a vehicle. Background Art

[0002] In the related art, a retaining spring is arranged between the vehicle drive shaft and the reducer to relatively fix the vehicle drive shaft and the reducer. Usually, the retaining spring is a relatively large annular structure. During the process of installing the vehicle drive shaft to the reducer, the vehicle drive shaft is inserted into the mounting hole on the reducer. The retaining spring sleeved on the vehicle drive shaft is always in a floating state, which makes assembly difficult. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a vehicle connection structure, which reduces the difficulty of assembly.

[0004] According to an embodiment of the utility model, a vehicle connection structure includes: a vehicle drive shaft; a reducer, the reducer is provided with a mounting hole, and the vehicle drive shaft is inserted into the mounting hole; a retaining spring, the retaining spring is sleeved on the vehicle drive shaft and is located between the vehicle drive shaft and the reducer; wherein the retaining spring is provided with a first stop portion and a second stop portion, the first stop portion and the second stop portion stop at opposite sides of the vehicle drive shaft to position the retaining spring on the vehicle drive shaft.

[0005] According to the vehicle connection structure of the embodiment of the utility model, the first stop portion and the second stop portion are arranged to stop the opposite sides of the vehicle drive shaft, so that the retaining spring is positioned on the vehicle drive shaft. In the process of installing the vehicle drive shaft to the mounting hole, the retaining spring is prevented from shaking, the difficulty of assembly is reduced, the risk of interference between the retaining spring and the inner wall of the mounting hole is reduced, the assembly convenience and connection reliability are improved, the requirements for assembly workers are reduced, and the efficiency is improved.

[0006] In some embodiments, the clamping spring is provided with a notch, a portion of the clamping spring adjacent to the notch is configured as a first stop portion, and a portion of the clamping spring away from the notch is configured as a second stop portion.

[0007] In some embodiments, the retaining spring includes: a first arc segment and a second arc segment, the first arc segment and the second arc segment are arranged on opposite sides of the notch, and the ends of the first arc segment and the second arc segment close to the notch are constructed as a first stop; a transition section, the transition section is arranged between the first arc segment and the second arc segment, the transition section is constructed as a second stop, and the two ends of the transition section are smoothly connected to the first arc segment and the second arc segment respectively.

[0008] In some embodiments, the snap ring includes: a first arc segment and a second arc segment, the first arc segment and the second arc segment are disposed on opposite sides of the notch, and one end of the first arc segment and the second arc segment close to the notch is configured as a first stop; a third arc segment and a fourth arc segment, the third arc segment is disposed at one end of the first arc segment away from the notch, and the fourth arc segment is disposed at one end of the second arc segment away from the notch; a transition segment, the transition segment is disposed between the third arc segment and the fourth arc segment, the transition segment is configured as a second stop portion, and both ends of the transition segment are smoothly connected to the third arc segment and the fourth arc segment respectively.

[0009] In some embodiments, the diameter of the vehicle drive shaft is Y, the third arc segment is configured as a third circular arc segment, the center of the third circular arc segment is the third center, the fourth arc segment is configured as a fourth circular arc segment, the center of the fourth circular arc segment is the fourth center, the distance between the third center and the fourth center is Q, 0 < Q ≤ 0.5Y, the first arc segment is configured as a first circular arc segment, the center of the first circular arc segment is the first center, and the distance between the first center and the center of the vehicle drive shaft is T, 0 < T ≤ 0.25Y.

[0010] In some embodiments, the length of the notch is X, 0.5Y ≤ X ≤ 0.9Y, the radius of the first circular arc segment is R1, 0.2X ≤ R1 ≤ X, the radius of the third circular arc segment is R2, X ≥ R2 ≥ 0.2X.

[0011] In some embodiments, the speed reducer includes a speed reducer housing, a differential is disposed in the speed reducer housing, and the differential includes: a differential housing, the differential housing is rotatably disposed in the speed reducer housing, and the differential housing is provided with a first through hole; a side gear, the side gear is disposed in the differential housing, the side gear is provided with a second through hole, a limiting groove is provided on the second through hole, and the limiting groove is clamped with the snap ring; wherein, the first through hole and the second through hole jointly form an installation hole.

[0012] In some embodiments, the diameter of the first through hole is B, the rotational diameter of the snap ring is S, and the inner diameter of the limiting groove is H, H ≤ S < B.

[0013] In some embodiments, the side gear is provided with a fillet, and the fillet is adjacent to the second through hole.

[0014] The vehicle according to an embodiment of the present invention includes the above-mentioned connection structure of the vehicle.

[0015] The vehicle according to an embodiment of the present invention positions the snap ring on the vehicle drive shaft by providing the first stop portion and the second stop portion to abut against opposite sides of the vehicle drive shaft. During the process of installing the vehicle drive shaft into the installation hole, the snap ring is prevented from shaking, the difficulty of assembly is reduced, the risk of interference between the snap ring and the inner wall of the installation hole is reduced, the assembly convenience and connection reliability are improved, the requirements for assembly workers are reduced, and the efficiency is increased.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the connection structure in the embodiment of the utility model;

[0019] Figure 2 The schematic diagram of the cooperation between the retaining spring and the vehicle drive shaft in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 3 The schematic diagram of the cooperation between the retaining spring and the vehicle drive shaft in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 4 for Figure 1 A partial enlarged view of point I in the middle.

[0022] Reference numerals:

[0023] 100. Connection structure;

[0024] 10. Vehicle drive shaft; 11. Positioning groove; 12. Dust cover;

[0025] 20. reducer; 21. mounting hole; 211. oil seal structure; 22. reducer housing; 23. differential housing; 231. first through hole; 232. bearing; 24. axle gear; 241. second through hole; 2411. limit groove; 242. fillet; 243. adjustment washer;

[0026] 30. retaining spring; 31. first stop portion; 32. second stop portion; 321. notch; 33. first arc segment; 34. second arc segment; 35. transition segment; 36. third arc segment; 37. fourth arc segment. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, features defined as “first” or “second” may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.

[0030] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The vehicle connection structure 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0033] Reference Figure 1 and Figure 2 According to an embodiment of the present utility model, a vehicle connection structure 100 includes: a vehicle drive shaft 10, a reducer 20 and a retaining spring 30.

[0034] The reducer 20 is provided with a mounting hole 21, and the vehicle drive shaft 10 is inserted into the mounting hole 21. The circlip 30 is sleeved on the vehicle drive shaft 10 and is located between the vehicle drive shaft 10 and the reducer 20; wherein the circlip 30 is provided with a first stop portion 31 and a second stop portion 32, and the first stop portion 31 and the second stop portion 32 stop at opposite sides of the vehicle drive shaft 10 to position the circlip 30 on the vehicle drive shaft 10.

[0035] The vehicle drive shaft 10 is inserted into the mounting hole 21 on the reducer 20, and the vehicle drive shaft 10 is responsible for transmitting the power output by the reducer 20 to the wheel axle of the vehicle to drive the vehicle. For example, the vehicle drive shaft 10 is connected to the output end of the reducer 20, and transmits the rotational motion output by the reducer 20 to the wheel axle of the vehicle, thereby driving the vehicle to travel.

[0036] The circlip 30 is installed between the vehicle drive shaft 10 and the reducer 20, and the circlip 30 plays a fixing effect. In the related art, the transmission shaft will be subjected to torsion and vibration when the vehicle is running, so it is necessary to install the circlip to ensure that the vehicle drive shaft and the reducer can be firmly in the correct position to ensure the normal operation of the vehicle transmission system.

[0037] The circlip 30 can provide a certain elasticity and generate a certain extrusion force on the shaft through its special shape and material properties. When the reducer 20 is installed on the transmission shaft, the circlip 30 will be compressed, thereby generating a retaining force to prevent the reducer 20 and the vehicle drive shaft 10 from loosening or falling off during operation.

[0038] In the related art, a retaining spring is arranged between the vehicle drive shaft and the reducer to relatively fix the vehicle drive shaft and the reducer. Usually, the retaining spring is a relatively large annular structure. During the process of installing the vehicle drive shaft to the reducer, the vehicle drive shaft is inserted into the mounting hole on the reducer. The retaining spring sleeved on the vehicle drive shaft is always in a floating state, which makes assembly difficult.

[0039] In the embodiment of the utility model, the retaining spring 30 is provided with a first stop portion 31 and a second stop portion 32, and the first stop portion 31 and the second stop portion 32 stop against the opposite sides of the vehicle drive shaft 10. For example, the first stop portion 31 and the second stop portion 32 respectively stop against the upper and lower sides of the vehicle drive shaft 10, thereby fixing the retaining spring 30 on the vehicle drive shaft 10. In the process of installing the vehicle drive shaft 10 to the mounting hole 21, the retaining spring 30 is prevented from shaking, thereby reducing the difficulty of assembly.

[0040] At the same time, after the retaining spring 30 is positioned on the vehicle drive shaft 10 through the first stop portion 31 and the second stop portion 32, the hanging amount is reduced. In the related art, a larger retaining spring is sleeved on the vehicle drive shaft, and the retaining spring automatically sags due to its own gravity, which easily causes the retaining spring to interfere with the inner wall of the mounting hole during the axial concentric installation of the retaining spring into the mounting hole, causing local deformation or damage of the retaining spring, affecting the pull-off force after assembly. In the embodiment of the utility model, by setting the retaining spring 30 to be positioned on the vehicle drive shaft 10, the risk of interference between the retaining spring 30 and the inner wall of the mounting hole 21 is reduced, and the assembly convenience and connection reliability are improved.

[0041] At the same time, in the related art, the floating retaining spring is difficult to assemble and requires multiple axial forces to be assembled into place, which affects the production rhythm, increases the labor intensity of the assemblers, and requires high assembly skills and operational stability of the assemblers. In the embodiment of the utility model, the retaining spring 30 is positioned on the vehicle drive shaft 10, thereby reducing labor intensity, reducing requirements for assembly workers, and improving efficiency.

[0042] At the same time, in the related art, the floating retaining spring has high requirements on the size of the mounting hole and the tolerance accuracy and size of the boundary size when it is assembled through the mounting hole, which increases the complexity of designing a matching dimension chain and increases the difficulty and cost of processing the mounting hole. The embodiment of the utility model reduces the requirements and complexity and reduces the cost by positioning the retaining spring 30 on the vehicle drive shaft 10.

[0043] According to the vehicle connection structure 100 of the embodiment of the utility model, the first stop portion 31 and the second stop portion 32 are provided to stop the opposite sides of the vehicle drive shaft 10, so that the retaining spring 30 is positioned on the vehicle drive shaft 10. In the process of installing the vehicle drive shaft 10 to the mounting hole 21, the retaining spring 30 is prevented from shaking, the difficulty of assembly is reduced, the risk of interference between the retaining spring 30 and the inner wall of the mounting hole 21 is reduced, the assembly convenience and connection reliability are improved, the requirements for assembly workers are reduced, and the efficiency is improved.

[0044] Reference Figure 2 , Figure 3 As shown, in some embodiments, the retaining spring 30 is provided with a notch 321 , the portion of the retaining spring 30 adjacent to the notch 321 is configured as a first stop portion 31 , and the portion of the retaining spring 30 away from the notch 321 is configured as a second stop portion 32 .

[0045] Among them, the retaining spring 30 is provided with a notch 321, and the retaining spring 30 can be put onto the vehicle drive shaft 10 through the notch 321. The part of the retaining spring 30 adjacent to the notch 321 is constructed as a first stop part 31, and the part away from the notch 321 is constructed as a second stop part 32. The notch 321 is fully utilized to improve the stability of the connection between the first stop part 31 and the vehicle drive shaft 10.

[0046] In the above solution, the retaining spring 30 is positioned on the vehicle drive shaft 10. During the assembly process, there is no need to consider the orientation of the notch 321. The assembly consistency is high, which meets the manual assembly requirements and can also achieve mechanical tooling assembly.

[0047] Reference Figure 2 As shown, in some embodiments, the retaining spring 30 includes: a first arc segment 33 , a second arc segment 34 and a transition segment 35 .

[0048] The first arc segment 33 and the second arc segment 34 are arranged at opposite sides of the notch 321, and one end of the first arc segment 33 and the second arc segment 34 close to the notch 321 is configured as a first stop. The transition segment 35 is arranged between the first arc segment 33 and the second arc segment 34, and the transition segment 35 is configured as a second stop portion 32, and both ends of the transition segment 35 are smoothly connected to the first arc segment 33 and the second arc segment 34 respectively.

[0049] Among them, the retaining spring 30 is divided into at least three sections, including a first arc section 33, a second arc section 34 and a transition section 35. The first arc section 33 is arc-shaped, and the second arc section 34 is arc-shaped, so as to better fit the shape of the vehicle drive shaft 10. The two ends of the transition section 35 are smoothly connected to the first arc section 33 and the second arc section 34. The connecting parts between the transition section 35 and the first arc section 33 and the second arc section 34 have no edges and corners, thereby reducing the risk of stress concentration.

[0050] In the embodiment of the utility model, the first arc segment 33 and the second arc segment 34 are arranged on opposite sides of the notch 321. The first arc segment 33 and the second arc segment 34 are more closely fitted to the outer wall of the vehicle drive shaft 10. The transition segment 35 is arranged between the first arc segment 33 and the second arc segment 34. The transition segment 35 is constructed as a second stop portion 32, which makes full use of the surface of the transition segment 35, increases the contact area, and thus improves stability.

[0051] Reference Figure 3 As shown, in some embodiments, the retaining spring 30 includes: a first arc segment 33 , a second arc segment 34 , a third arc segment 36 , a fourth arc segment 37 and a transition segment 35 .

[0052] The first arc segment 33 and the second arc segment 34 are arranged on opposite sides of the notch 321, and the ends of the first arc segment 33 and the second arc segment 34 close to the notch 321 are configured as a first stop. The third arc segment 36 is arranged at the end of the first arc segment 33 away from the notch 321, and the fourth arc segment 37 is arranged at the end of the second arc segment 34 away from the notch 321. The transition segment 35 is arranged between the third arc segment 36 and the fourth arc segment 37, and the transition segment 35 is configured as a second stop portion 32, and the two ends of the transition segment 35 are smoothly connected to the third arc segment 36 and the fourth arc segment 37 respectively.

[0053] Among them, the snap ring 30 is divided into at least five segments, including: a first arc segment 33, a second arc segment 34, a third arc segment 36, a fourth arc segment 37, and a transition segment 35. The shape of the first arc segment 33 is arc-shaped, the shape of the second arc segment 34 is arc-shaped, the shape of the third arc segment 36 is arc-shaped, and the shape of the fourth arc segment 37 is arc-shaped, so as to better fit the outer shape of the vehicle drive shaft 10. The two ends of the transition segment 35 are smoothly connected to the third arc segment 36 and the fourth arc segment 37, and there are no sharp corners at the connection parts of the transition segment 35 with the third arc segment 36 and the fourth arc segment 37, reducing the risk of stress concentration.

[0054] In the above solution, the first arc segment 33, the second arc segment 34, the third arc segment 36, the fourth arc segment 37, and the transition segment 35 wrap the vehicle drive shaft 10. The material of the snap ring 30 has elasticity, and the first arc segment 33, the second arc segment 34, the third arc segment 36, the fourth arc segment 37, and the transition segment 35 exert a clamping force on the vehicle drive shaft 10, thereby making the snap ring 30 more stable.

[0055] Specifically, the first arc segment 33 and the second arc segment 34 are symmetric about the vehicle drive shaft 10, and the third arc segment 36 and the fourth arc segment 37 are symmetric about the vehicle drive shaft 10.

[0056] Refer to Figure 3 As shown, in some embodiments, the diameter of the vehicle drive shaft 10 is Y. The third arc segment 36 is configured as a third circular arc segment, the center of the third circular arc segment is the third center, the fourth arc segment 37 is configured as a fourth circular arc segment, the center of the fourth circular arc segment is the fourth center, the distance between the third center and the fourth center is Q, 0 < Q ≤ 0.5Y. The first arc segment 33 is configured as a first circular arc segment, the center of the first circular arc segment is the first center, the distance between the first center and the center of the vehicle drive shaft 10 is T, 0 < T ≤ 0.25Y.

[0057] Among them, the third arc segment 36 is configured as a third circular arc segment, the third circular arc segment is arc-shaped, the fourth arc segment 37 is configured as a fourth circular arc segment, the fourth circular arc segment is arc-shaped, the first arc segment 33 is configured as a first circular arc segment, the first circular arc segment is arc-shaped, the distance between the third center and the fourth center is Q. That is to say, Q affects the round and flat shape of the snap ring 30. The closer Q is to 0, the rounder the snap ring 30 is; the larger Q is, the flatter the snap ring 30 is. The distance between the first center and the center of the vehicle drive shaft 10 is T. That is to say, T affects the round and flat shape of the snap ring 30. The larger T is, the flatter the snap ring 30 is; the closer T is to 0, the rounder the snap ring 30 is.

[0058] In the above solution, it is set that 0 < Q ≤ 0.5Y and 0 < T ≤ 0.25Y, so as to control the shape of the snap ring 30 within a certain range. On the basis of positioning the snap ring 30 on the vehicle drive shaft 10, the volume of the snap ring 30 is reduced. During the process of inserting the vehicle drive shaft 10 into the mounting hole 21, the probability of interference between the snap ring 30 and the inner wall of the mounting hole 21 is reduced.

[0059] For example, the diameter of the vehicle drive shaft 10 is 17.8 mm, the radius of the third arc segment is 8.3 mm, the radius of the fourth arc segment is 8.3 mm, Q is 5 mm, and T is 3.55 mm.

[0060] Refer to Figure 2 、 Figure 3 As shown in the figure, in some embodiments, the length of the notch 321 is X, 0.5Y ≤ X ≤ 0.9Y, the radius of the first arc segment is R1, 0.2X ≤ R1 ≤ X, and the radius of the third arc segment is R2, X ≥ R2 ≥ 0.2X.

[0061] Among them, the length of the notch 321 is X, and X is set within the range of 0.5Y to 0.9Y. That is to say, the size of the notch 321 is within a certain range, so that when the snap ring 30 is sleeved on the vehicle drive shaft 10, it can fit well with the vehicle drive shaft 10. The snap ring 30 can be stably fixed on the vehicle drive shaft 10, reducing the probability of the snap ring 30 detaching from the vehicle drive shaft 10. And the notch 321 is set within the range of 0.5Y to 0.9Y, and the size of the notch 321 enables the snap ring 30 to be easily installed on the vehicle drive shaft 10.

[0062] Among them, the radius of the first arc segment is R1, 0.2X ≤ R1 ≤ X, and the radius of the third arc segment is R2, 0.2X ≤ R2 ≤ X. By controlling the sizes of the first arc segment and the third arc segment, the snap ring 30 can fit well with the vehicle drive shaft 10, and the snap ring 30 and the vehicle drive shaft 10 are well matched.

[0063] For example, R1 is equal to 0.2X; or, R1 is equal to 0.3X; or, R1 is equal to 0.4X; or, R1 is equal to 0.5X; or, R1 is equal to 0.6X; or, R1 is equal to 0.7X; or, R1 is equal to 0.8X; or, R1 is equal to 0.9X; or, R1 is equal to X.

[0064] For example, R2 is equal to 0.2X; or, R2 is equal to 0.3X; or, R2 is equal to 0.4X; or, R2 is equal to 0.5X; or, R2 is equal to 0.6X; or, R2 is equal to 0.7X; or, R2 is equal to 0.8X; or, R2 is equal to 0.9X; or, R2 is equal to X.

[0065] Specifically, R1 is related to R2.

[0066] Reference Figure 3 As shown, specifically, the first arc segment 33 and the second arc segment 34 are symmetrical about the vehicle drive shaft 10 , and the third arc segment 36 and the fourth arc segment 37 are symmetrical about the vehicle drive shaft 10 , so that the retaining spring 30 fits the vehicle drive shaft 10 more closely.

[0067] For example, the diameter of the vehicle drive shaft 10 is 17.8 mm, the radius of the third arc segment is 8.3 mm, the radius of the fourth arc segment is 8.3 mm, Q is 5 mm, T is 3.55 mm, the radius of the first arc segment is 12.2 mm, the radius of the second arc segment is 12.2 mm, and the length of the notch 321 is 12.6 mm.

[0068] Reference Figure 4 As shown, in some embodiments, the reducer 20 includes: a reducer housing 22 , in which a differential is arranged, and the differential includes: a differential housing 23 and a half-axle gear 24 .

[0069] The differential housing 23 is rotatably disposed on the reducer housing 22, and is provided with a first through hole 231. The side gear 24 is disposed on the differential housing 23, and is provided with a second through hole 241. The second through hole 241 is provided with a limiting groove 2411, and the limiting groove 2411 is clamped with the clamping spring 30.

[0070] The first through hole 231 and the second through hole 241 together form a mounting hole 21 .

[0071] The reducer housing 22 is fixed on the vehicle body or subframe by suspension, and the reducer housing 22 is mainly used to bear external forces and fix and seal internal components. The differential housing 23 is a part of the differential, and a half-axle gear 24 is arranged in the differential housing 23. The half-axle gear 24 mainly bears the torque input by the motor and transmits it to the vehicle drive shaft 10, and has a differential function when the vehicle turns.

[0072] In the above scheme, a first through hole 231 is provided on the differential housing 23, and a second through hole 241 is provided on the half-shaft gear 24. The first through hole 231 and the second through hole 241 together constitute a mounting hole 21. When the vehicle is assembled, the vehicle drive shaft 10 is passed through the first through hole 231 and the second through hole 241, so that the vehicle drive shaft 10 is more stably fixed in the reducer 20.

[0073] Specifically, the differential also includes: planetary gears. In the differential, the side gear 24 is located between the two half shafts of the differential, and is used to transmit the power output by the engine to the wheel axle of the vehicle. The side gear 24 usually cooperates with the planetary gears of the differential to form the structure of the differential.

[0074] The differential is a key component in the vehicle transmission system, mainly used to adjust and distribute the torque output by the engine to the left and right axles of the vehicle. When turning, due to the different distances traveled by the inner and outer wheels, the differential allows the vehicle to turn smoothly by making the speed difference between the inner and outer axles. The function of the half-shaft gear 24 is to transmit the torque output by the differential to the axles of the vehicle, thereby driving the vehicle.

[0075] The side gears 24 are made of high-strength steel and can withstand high torque and high load. Their design and size need to be reasonably selected and optimized according to factors such as the type, performance and use conditions of the vehicle.

[0076] Reference Figure 4 As shown, specifically, a bearing 232 is provided between the differential housing 23 and the reducer housing 22 , the outer ring of the bearing 232 is fixed on the reducer housing 22 , and the inner ring of the bearing 232 is connected to the differential housing 23 .

[0077] Reference Figure 4 As shown, in some embodiments, the diameter of the first through hole 231 is B, the rotation diameter of the retaining spring 30 is S, the inner diameter of the limiting groove 2411 is H, and H≤S<B.

[0078] The rotation diameter is the maximum diameter occupied by a rotating object during the rotation process. The rotation diameter of the clamping spring 30 is the maximum diameter occupied by the clamping spring 30 during the rotation process.

[0079] In the above solution, by setting H≤S<B, the clamping spring 30 can pass through the first through hole 231 relatively smoothly, and at the same time, the groove of the clamping spring 30 can normally limit the movement of the clamping spring 30.

[0080] For example, the rotation diameter S of the circlip 30 is 25.1 mm, or the rotation diameter S of the circlip 30 is 25.9 mm.

[0081] In some specific embodiments, the spring wire radius of the retaining spring 30 is r, and the half-shaft gear 24 is also provided with a spline structure that cooperates with the vehicle drive shaft 10. The inner diameter of the spline structure is E, Y<E-2r, so that after the retaining spring 30 is contracted by the spline structure, the inner diameter surface does not interfere with the outside of the retaining spring 30 groove.

[0082] In some embodiments, Y<B.

[0083] The diameter of the vehicle drive shaft 10 is Y, and the diameter of the first through hole 231 is B.

[0084] In the related art, when the vehicle drive shaft is assembled to the mounting hole, the retaining spring contracts when passing through the first through hole and also contracts at the position of the spline structure. In the embodiment of the utility model, by setting Y<B, the number of contraction times of the retaining spring 30 is reduced, and the deformation and reduction of the rigidity of the retaining spring 30 caused by the two contraction and rebound of the retaining spring 30 during the assembly process of the existing structure are eliminated, thereby reducing the probability of deformation of the retaining spring 30 and improving the reliability of the connection of the retaining spring 30 after assembly.

[0085] Reference Figure 4 As shown, in some other embodiments, the side gear 24 is provided with a rounded corner 242 , and the rounded corner 242 is adjacent to the second through hole 241 .

[0086] The fillet 242 is a guide angle to achieve a process of increasing the maximum diameter of the opening. The fillet 242 is provided to guide the retaining spring 30, thereby improving assembly passability and reducing assembly difficulty.

[0087] Reference Figure 4 As shown, in some specific embodiments, an adjusting washer 243 is provided on the half-shaft gear 24, and the adjusting washer 243 is used to adjust the meshing clearance between the half-shaft gear 24 and the planetary gear.

[0088] The maximum diameter of the fillet 242 is K, and the inner diameter of the adjusting washer 243 is Φ1, Φ1<K, thereby improving the guiding stability.

[0089] In some other embodiments, Y<B, and the side gear 24 is provided with a rounded corner 242 , and the rounded corner 242 is adjacent to the second through hole 241 .

[0090] The diameter of the vehicle drive shaft 10 is Y, the diameter of the first through hole 231 is B, and the fillet 242 is a guide angle.

[0091] In the related art, when the vehicle drive shaft is assembled to the mounting hole, the retaining spring contracts when passing through the first through hole, and also contracts at the position of the spline structure. In the embodiment of the utility model, by setting Y<B, the number of contraction times of the retaining spring 30 is reduced, and the deformation and reduction of the rigidity of the retaining spring 30 caused by the two contractions and rebounds of the retaining spring 30 during the assembly process of the existing structure are eliminated, thereby reducing the probability of deformation of the retaining spring 30 and improving the reliability of the connection of the retaining spring 30 after assembly. At the same time, the rounded corner 242 is provided for guidance to further improve the passability.

[0092] Reference Figure 4 As shown, in some embodiments, the vehicle drive shaft 10 is provided with a positioning groove 11 , and the retaining spring 30 is sleeved in the positioning groove 11 .

[0093] Reference Figure 4As shown, in some embodiments, the mounting hole 21 is provided with an oil seal structure 211 , and the oil seal structure 211 cooperates with the vehicle drive shaft 10 to prevent the gear oil in the reducer 20 from leaking or foreign debris from entering the reducer 20 .

[0094] Reference Figure 1 , Figure 4 As shown, in some specific embodiments, a dust cover 12 is provided on the vehicle drive shaft 10 to cooperate with the oil seal structure 211 to isolate the internal space of the reducer 20 and improve the sealing performance.

[0095] In the above scheme, the radial clearance between the retaining spring 30 positioned on the vehicle drive shaft 10 and the main lip of the oil seal structure 211 will become larger during assembly, reducing the risk of scratching the oil seal structure 211. At the same time, the overall size can be made more compact, reducing the requirements for dimensional tolerances and reducing processing and development costs.

[0096] The vehicle according to the embodiment of the present invention includes the above-mentioned vehicle connection structure 100 .

[0097] According to the vehicle of the embodiment of the utility model, the first stop portion 31 and the second stop portion 32 are provided to stop the opposite sides of the vehicle drive shaft 10, so that the retaining spring 30 is positioned on the vehicle drive shaft 10. In the process of installing the vehicle drive shaft 10 to the mounting hole 21, the retaining spring 30 is prevented from shaking, the difficulty of assembly is reduced, the risk of interference between the retaining spring 30 and the inner wall of the mounting hole 21 is reduced, the assembly convenience and connection reliability are improved, the requirements for assembly workers are reduced, and the efficiency is improved.

[0098] Other structures and operations of the vehicle connection structure 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0099] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0100] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle connection structure, characterized in that: Comprising: A vehicle drive shaft (10); A speed reducer (20) provided with a mounting hole (21), and the vehicle drive shaft (10) passes through the mounting hole (21); A snap ring (30) sleeved on the vehicle drive shaft (10) and located between the vehicle drive shaft (10) and the speed reducer (20); wherein, the snap ring (30) is provided with a first abutting portion (31) and a second abutting portion (32), and the first abutting portion (31) and the second abutting portion (32) abut against opposite sides of the vehicle drive shaft (10) to position the snap ring (30) on the vehicle drive shaft (10).

2. The vehicle connection structure according to claim 1, characterized in that: The snap ring (30) is provided with a notch (321), the portion of the snap ring (30) adjacent to the notch (321) is configured as the first abutting portion (31), and the portion of the snap ring (30) away from the notch (321) is configured as the second abutting portion (32).

3. The vehicle connection structure according to claim 2, characterized in that: The snap ring (30) includes: A first arc segment (33) and a second arc segment (34), the first arc segment (33) and the second arc segment (34) are arranged on opposite sides of the notch (321), and the ends of the first arc segment (33) and the second arc segment (34) close to the notch (321) are configured as the first abutment; A transition segment (35) arranged between the first arc segment (33) and the second arc segment (34), the transition segment (35) is configured as the second abutting portion (32), and the two ends of the transition segment (35) are respectively and smoothly connected to the first arc segment (33) and the second arc segment (34).

4. The vehicle connection structure according to claim 2, characterized in that: The snap ring (30) includes: A first arc segment (33) and a second arc segment (34), the first arc segment (33) and the second arc segment (34) are arranged on opposite sides of the notch (321), and the ends of the first arc segment (33) and the second arc segment (34) close to the notch (321) are configured as the first abutment; A third arc segment (36) arranged at one end of the first arc segment (33)背离 the notch (321), and a fourth arc segment (37) arranged at one end of the second arc segment (34)背离 the notch (321); A transition segment (35) arranged between the third arc segment (36) and the fourth arc segment (37), the transition segment (35) is configured as the second abutting portion (32), and the two ends of the transition segment (35) are respectively and smoothly connected to the third arc segment (36) and the fourth arc segment (37).

5. The vehicle connection structure according to claim 4, characterized in that: The diameter of the vehicle drive shaft (10) is Y, the third arc segment (36) is configured as a third circular arc segment, the center of the third circular arc segment is the third center, the fourth arc segment (37) is configured as a fourth circular arc segment, the center of the fourth circular arc segment is the fourth center, the distance between the third center and the fourth center is Q, 0 < Q ≤ 0.5Y, the first arc segment (33) is configured as a first circular arc segment, the center of the first circular arc segment is the first center, and the distance between the first center and the center of the vehicle drive shaft (10) is T, 0 < T ≤ 0.25Y.

6. The vehicle connection structure according to claim 5, characterized in that: The length of the notch (321) is X, 0.5Y≤X≤0.9Y, the radius of the first arc segment is R1, 0.2X≤R1≤X, and the radius of the third arc segment is R2, X≥R2≥0.2X.

7. The vehicle connection structure according to claim 5, characterized in that: The reducer (20) comprises a reducer housing (22), a differential is arranged in the reducer housing (22), and the differential comprises: A differential housing (23), the differential housing (23) being rotatably disposed on the reducer housing (22), and the differential housing (23) being provided with a first through hole (231); A half-axle gear (24), the half-axle gear (24) is arranged on the differential housing (23), a second through hole (241) is arranged on the half-axle gear (24), a limiting groove (2411) is arranged on the second through hole (241), and the limiting groove (2411) is clamped with a clamping spring (30); wherein, The first through hole (231) and the second through hole (241) together form a mounting hole (21).

8. The vehicle connection structure according to claim 7, characterized in that: The diameter of the first through hole (231) is B, the rotation diameter of the retaining spring (30) is S, the inner diameter of the limiting groove (2411) is H, and H≤S<B.

9. The vehicle connection structure according to claim 8, characterized in that: The half-axle gear (24) is provided with a rounded corner (242), and the rounded corner (242) is adjacent to the second through hole (241).

10. A vehicle, characterized in that: A vehicle connection structure (100) comprising the vehicle connection structure (100) according to any one of claims 1 to 9.

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