Lightweight vehicle body control rear side support arm

Abstract

The utility model relates to a light-weight automobile body control rear side supporting arm, and belongs to the technical field of automobile parts. The light-weight vehicle body control rear side supporting arm comprises a swing arm body, a ball head assembly A, a ball head assembly B and a connecting assembly. The swing arm body is of a C-shaped structure; a connecting pin shaft is arranged at one end of the swing arm body; a connecting assembly is arranged on the connecting pin shaft; the other end of the swing arm body is provided with a ball head assembly A through an assembly hole A; and a ball head assembly B is mounted in the middle of the swing arm body through an assembly hole B. The light-weight vehicle body control rear side supporting arm is compact in structure and ingenious in design, solves the problems that the rotation angle of a ball pin of an existing control rear side supporting arm is relatively small and abnormal sound occurs in the existing control rear side supporting arm by arranging the sealing bottom cover and the limiting steel sleeve, and is particularly suitable for being used in a vehicle suspension system.

Description

Technical Field

[0001] This utility model relates to a lightweight rear control arm for vehicle body, belonging to the field of automotive parts technology. Background Technology

[0002] In the field of automotive component technology, the body control rear control arm is a crucial component of the automotive suspension system. The body control rear control arm comprises the control arm body, ball joint assembly, and rear bushing connection structure. While the utility model patent with authorization announcement number CN209795091U discloses a novel forged steel front lower control arm that meets certain usage requirements, it suffers from the following problems:

[0003] First: The ball joint of the existing control arm ball joint assembly is directly installed on the control arm body through a plastic bushing. It only relies on the bottom end cap for a single seal. Foreign objects can easily enter the ball joint assembly, causing damage to the ball joint assembly and resulting in abnormal noise.

[0004] Second: The ball pin of the existing control arm ball joint assembly is directly installed on the mounting hole of the control arm body; in order to limit the ball pin, the upper end of the mounting hole of the control arm body must be spherical. As a result, when the ball pin rotates, there is not only a problem of relatively small rotation angle, but also a problem that the ball pin is very easy to make hard contact with the control arm body during rotation, which can easily cause abnormal noise.

[0005] Therefore, it is necessary to develop a new vehicle body control rear control arm to solve the above-mentioned problems of existing control arms. Summary of the Invention

[0006] The purpose of this utility model is to provide a lightweight vehicle body control rear arm with a compact structure and ingenious design, which solves the problems of relatively small ball pin rotation angle and abnormal noise in existing control rear arm systems.

[0007] The technical solution of this utility model is:

[0008] A lightweight rear control arm for vehicle body control includes a swing arm body, a ball joint assembly A, a ball joint assembly B, and a connecting assembly; characterized in that: the swing arm body has a "C" shaped structure; a connecting pin is provided at one end of the swing arm body; a connecting assembly is mounted on the connecting pin; the ball joint assembly A is mounted at the other end of the swing arm body through a mounting hole A; the ball joint assembly B is mounted at the middle of the swing arm body through a mounting hole B; the ball joint assembly A includes a ball joint pin A, a sealing bottom cover, a dust cover A, an inner bushing A, a limiting steel sleeve, and a buffer rubber sleeve. The assembly hole A contains a positioning sleeve, a buffer rubber sleeve, and a limiting steel sleeve. A ball head pin A is installed inside the limiting steel sleeve via an inner liner A. The upper end of the ball head pin A extends beyond the limiting steel sleeve and is fitted with a dust cover A via a locking ring. The lower end of the dust cover A is connected to the upper end of the limiting steel sleeve via the locking ring. A support ring and a sealing plate are sequentially installed on the limiting steel sleeve below the inner liner A. The lower end of the limiting steel sleeve is riveted to the sealing plate. A sealing bottom cover is provided below the sealing plate and is riveted to the assembly hole A.

[0009] The assembly hole A has a stepped straight hole structure; the ball head pin A inside the dust cover A is fitted with a sound-insulating rubber sleeve.

[0010] The buffer rubber sleeve is connected to the positioning sleeve and the limiting steel sleeve by vulcanization.

[0011] The ball joint assembly B includes a ball joint pin B, a sealing base plate, and a dust cover B; the ball joint pin B is installed in the assembly hole B through an inner bushing B and a support seat; the upper end of the ball joint pin B extends above the assembly hole B and is fitted with the dust cover B through a locking ring; the lower end of the dust cover B is connected to the swing arm body through a locking ring; a sealing base plate is provided below the support seat; the assembly hole B is riveted to the sealing base plate.

[0012] The swing arm body is made of aluminum; the swing arm body is provided with weight reduction holes.

[0013] The cross-section of the connecting pin is hexagonal.

[0014] The advantages of this utility model are:

[0015] This lightweight rear control arm for vehicle body is compact and ingeniously designed. By setting a sealed bottom cover and a limiting steel sleeve, it solves the problems of relatively small ball pin rotation angle and abnormal noise in existing rear control arms, making it particularly suitable for use in vehicle suspension systems. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure in the AA direction;

[0018] Figure 3 for Figure 1 Schematic diagram of the structure in the middle BB direction;

[0019] Figure 4 This is a schematic diagram of the structure of the suspension arm body of this utility model;

[0020] Figure 5 for Figure 4 Schematic diagram of the CC-axis structure;

[0021] Figure 6 for Figure 1 Enlarged structural diagram at point D;

[0022] Figure 7 for Figure 6 A schematic diagram of the right-side structure.

[0023] In the diagram: 1. Swing arm body; 2. Connecting pin; 3. Connecting assembly; 4. Assembly hole A; 5. Ball head assembly A; 6. Assembly hole B; 7. Ball head assembly B; 8. Positioning sleeve; 9. Buffer rubber sleeve; 10. Limiting steel sleeve; 11. Inner bushing A; 12. Ball head pin A; 13. Locking ring; 14. Dust cover A; 15. Support ring; 16. Sealing plate; 17. Sealing bottom cover; 18. Sound insulation rubber sleeve; 19. Inner bushing B; 20. Support seat; 21. Dust cover B; 22. Sealing bottom plate; 23. Weight reduction hole; 24. Vibration damping rubber sleeve; 25. Connecting steel sleeve; 26. Vibration damping sleeve; 27. Connecting lug; 28. Matching hole; 29. ​​Ball head pin B. Detailed Implementation

[0024] The lightweight rear control arm for vehicle body control includes a control arm body 1, a ball joint assembly A5, a ball joint assembly B7, and a connecting assembly 3 (see the attached instruction manual). Figure 1 ).

[0025] The swing arm body 1 has a "C" shaped structure (see instruction manual appendix). Figure 1 The swing arm body 1 is made of aluminum; weight reduction holes 23 are provided on the swing arm body 1. The purpose of this design is to reduce the weight of the swing arm body 1 by utilizing the low density and relatively light weight of aluminum.

[0026] One end of the swing arm body 1 is provided with a connecting pin 2 (see the instruction manual appendix). Figure 4 The cross-section of the connecting pin 2 has a hexagonal structure (see the instruction manual appendix). Figure 5 Connecting pin 2 is equipped with connecting assembly 3 (see instruction manual appendix). Figure 1 , 6 and 7).

[0027] Connection assembly 3 includes shock-absorbing rubber sleeve 24, connecting steel sleeve 25, and shock-absorbing sleeve 26 (see instruction manual appendix). Figure 6 and 7 A shock-absorbing rubber sleeve 24, a connecting steel sleeve 25, and a shock-absorbing sleeve 26 are sequentially fitted onto the outer side of the connecting pin 2; the shock-absorbing rubber sleeve 24 is connected to the connecting pin 2 and the connecting steel sleeve 25 by vulcanization; the shock-absorbing sleeve 26 is installed on the outside of the connecting steel sleeve 25 by interference fit; the shock-absorbing sleeve 26 is provided with a connecting lug 27; the connecting lug 27 is provided with a matching hole 28 (see the instruction manual appendix). Figure 7 ).

[0028] During assembly, the connecting assembly 3 is connected to other parts of the vehicle through the matching hole 28; thus, when the vehicle is subjected to force, it is transmitted to the swing arm body 1 through the connecting lug 27, and the shock-absorbing rubber cylinder 24 will have a shock-absorbing function.

[0029] The other end of the swing arm body 1 is fitted with a ball joint assembly A5 through mounting hole A4 (see instruction manual appendix). Figure 1 , 2 (and 4). The assembly hole A4 has a stepped straight hole structure; the purpose of this design is to solve the problem that when the existing assembly hole has a spherical structure, the upper end of the assembly hole restricts the rotation range of the ball head pin during rotation, resulting in a relatively small rotation range.

[0030] Ball joint assembly A5 includes ball joint pin A12, sealing bottom cover 17, dust cover A14, inner bushing A11, limiting steel sleeve 10, buffer rubber sleeve 9, and positioning sleeve 8 (see instruction manual appendix). Figure 2 ).

[0031] A positioning sleeve 8, a buffer rubber sleeve 9, and a limiting steel sleeve 10 are sequentially installed inside the assembly hole A4. The buffer rubber sleeve 9 is connected to the positioning sleeve 8 and the limiting steel sleeve 10 by vulcanization. A ball head pin A12 is installed inside the limiting steel sleeve 10 through an inner bushing A11.

[0032] The purpose of setting up the positioning sleeve 8, the buffer rubber sleeve 9, and the limiting steel sleeve 10 is that the ball head pin A12 can be limited and assembled by the spherical structure inside the limiting steel sleeve 10; so that when the ball head pin A12 touches the limiting steel sleeve 10, the limiting steel sleeve 10 can squeeze the buffer rubber sleeve 9 to rotate a certain angle, thus achieving the purpose of expanding the rotation angle of the ball head pin A12.

[0033] The upper end of the ball head pin A12 extends to the limiting steel sleeve 10 and is fitted with a dust cover A14 via a locking ring 13; the lower end of the dust cover A14 is connected to the upper end of the limiting steel sleeve 10 via the locking ring 13.

[0034] A support ring 15 and a sealing plate 16 are sequentially installed on the limiting steel sleeve 10 below the inner liner A11; the lower end of the limiting steel sleeve 10 is riveted to the sealing plate 16.

[0035] A sealing bottom cover 17 is provided below the sealing plate 16; the sealing bottom cover 17 is riveted to the assembly hole A4. The purpose of providing the sealing plate 16 and the sealing bottom cover 17 is to enable the sealing plate 16 and the sealing bottom cover 17 to form a double seal for the ball head pin A12, thereby solving the problem of easy leakage that exists when the existing ball head assembly only has a single layer of seal.

[0036] The ball head pin A12 inside the dust cover A14 is fitted with a sound-insulating rubber sleeve 18 (see instruction manual). Figure 2 The purpose of setting the sound-insulating rubber sleeve 18 is to buffer and reduce noise when the ball head pin A12 comes into contact with the limiting steel sleeve 10 during operation, so as to avoid the problem of "abnormal noise".

[0037] The ball joint assembly B7 is mounted on the middle of the swing arm body 1 through the mounting hole B6 (see the instruction manual appendix). Figure 1 , 3 (and 4). The ball joint assembly B7 includes the ball joint pin B29, the sealing base plate 22, and the dust cover B21 (see the instruction manual appendix). Figure 3 ).

[0038] A ball head pin B29 is installed inside the assembly hole B6 via an inner bushing B19 and a support base 20; the upper end of the ball head pin B29 extends above the assembly hole B6 and is fitted with a dust cover B21 via a locking ring 13; the lower end of the dust cover B21 is connected to the swing arm body 1 via the locking ring 13; a sealing base plate 22 is provided below the support base 20; the assembly hole B6 and the sealing base plate 22 are riveted together (see the appendix to the instruction manual). Figure 3 ).

[0039] This lightweight rear control arm for vehicle body is compact and ingeniously designed. By setting a sealed bottom cover 17 and a limiting steel sleeve 10, it solves the problems of relatively small ball pin rotation angle and abnormal noise in existing rear control arms, making it particularly suitable for use in vehicle suspension systems.

Claims

1. A lightweight rear control arm for vehicle body, comprising a control arm body (1), a ball joint assembly A (5), a ball joint assembly B (7), and a connecting assembly (3); characterized in that: The swing arm body (1) has a "C" shaped structure; one end of the swing arm body (1) is provided with a connecting pin (2); a connecting assembly (3) is mounted on the connecting pin (2); the other end of the swing arm body (1) is equipped with a ball head assembly A (5) through the assembly hole A (4); the middle part of the swing arm body (1) is equipped with a ball head assembly B (7) through the assembly hole B (6); the ball head assembly A (5) includes a ball head pin A (12), a sealing bottom cover (17), a dust cover A (14), an inner bushing A (11), a limiting steel sleeve (10), a buffer rubber sleeve (9), and a positioning sleeve (8); the positioning sleeve (8), the buffer rubber sleeve (9), and the limiting steel sleeve (8) are sequentially installed in the assembly hole A (4). The limiting steel sleeve (10) is fitted with a ball head pin A (12) through an inner bushing A (11). The upper end of the ball head pin A (12) extends to the limiting steel sleeve (10) and is fitted with a dust cover A (14) through a locking ring (13). The lower end of the dust cover A (14) is connected to the upper end of the limiting steel sleeve (10) through the locking ring (13). A support ring (15) and a sealing plate (16) are sequentially installed on the limiting steel sleeve (10) below the inner bushing A (11). The lower end of the limiting steel sleeve (10) is riveted to the sealing plate (16). A sealing bottom cover (17) is provided below the sealing plate (16). The sealing bottom cover (17) is riveted to the assembly hole A (4).

2. The lightweight rear side control arm for vehicle body control according to claim 1, characterized in that: The assembly hole A (4) has a stepped straight hole structure; the ball head pin A (12) inside the dust cover A (14) is fitted with a sound insulation rubber sleeve (18).

3. The lightweight rear side control arm for vehicle body control according to claim 1, characterized in that: The buffer rubber sleeve (9) is connected to the positioning sleeve (8) and the limiting steel sleeve (10) by vulcanization connection.

4. A lightweight rear side control arm for vehicle body control according to claim 1, characterized in that: The ball joint assembly B (7) includes a ball pin B (29), a sealing base plate (22), and a dust cover B (21); the ball pin B (29) is installed in the assembly hole B (6) through an inner bushing B (19) and a support seat (20); the upper end of the ball pin B (29) extends above the assembly hole B (6) and is fitted with a dust cover B (21) through a locking ring (13); the lower end of the dust cover B (21) is connected to the swing arm body (1) through the locking ring (13); a sealing base plate (22) is provided below the support seat (20); the assembly hole B (6) and the sealing base plate (22) are riveted together.

5. A lightweight rear side control arm for vehicle body control according to claim 1, characterized in that: The swing arm body (1) is made of aluminum material; the swing arm body (1) is provided with weight reduction holes (23).

6. A lightweight rear side control arm for vehicle body control according to claim 1, characterized in that: The cross-section of the connecting pin (2) is hexagonal.

7. A lightweight rear side control arm for vehicle body control according to claim 6, characterized in that: The connecting assembly (3) includes a shock-absorbing rubber sleeve (24), a connecting steel sleeve (25), and a shock-absorbing sleeve (26); the shock-absorbing rubber sleeve (24), the connecting steel sleeve (25), and the shock-absorbing sleeve (26) are sequentially fitted on the outside of the connecting pin (2); the shock-absorbing rubber sleeve (24) is connected to the connecting pin (2) and the connecting steel sleeve (25) by vulcanization; the shock-absorbing sleeve (26) is installed on the outside of the connecting steel sleeve (25) by interference fit; the shock-absorbing sleeve (26) is provided with a connecting lug (27); the connecting lug (27) is provided with a matching hole (28).

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