Automobile rear overhang control arm
By designing a rear suspension control arm of a single-piece high-strength board stamping, the problems of complex process, difficult processing and high cost in the prior art are solved, and the effect of simple structure and reduced cost and weight is achieved.
Patent Information
- Application Number
- CN202422078651.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing automotive rear suspension control arms have complex processes, high processing difficulties and high cost.
A car rear suspension control arm is designed, and its control arm body is stamped with a single-piece high-strength board, with a "U" cross-section, including the main board, side board and boss. By reducing machining steps and simplifying the process, weight and cost are reduced.
It achieves a simple structure, reduces stamping difficulty and cost, avoids weld fatigue problems, meets working conditions, and reduces weight and cost while ensuring quality.
Smart Images
Figure CN222933662U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile parts, and particularly relates to an automobile rear suspension control arm. Background Art
[0002] Automobile rear suspension control arms are mostly used in multi-link rear suspensions and need sufficient strength and stiffness to withstand impacts from the road surface and forces generated by vehicle movement. One end of the automobile rear suspension control arm is connected to the subframe, the other end is connected to the steering knuckle, the side close to the steering knuckle is connected to the shock absorber, and the middle part is connected to the shock absorber spring. There are many connection points and the working conditions are complex, so it is a difficult part to design among the rear suspension parts. Content of the Utility Model
[0003] The utility model provides an automobile rear suspension control arm, which can solve the problems of complex process, high processing difficulty and high cost of the existing automobile rear suspension control arm.
[0004] To achieve the above object, the utility model provides the following technical solution: an automobile rear suspension control arm, including a control arm body, the cross-section of the control arm body is in a "U" shape, the control arm body includes a main board, and side boards are relatively arranged on both sides of the main board, and flanges are arranged on the upper sides of the side boards; a first boss is arranged at the right end of the side board, a subframe mounting hole is arranged in the middle of the first boss, a second boss is arranged at the left end of the side board, a steering knuckle mounting hole is arranged on the second boss, a third boss is arranged on one side of the second boss, and a shock absorber mounting hole is arranged on the third boss; a shock absorber spring mounting hole is arranged in the middle of the main board, a flanging part extending upward is arranged at the edge of the shock absorber spring mounting hole, a fourth boss is arranged at the right part of the shock absorber spring mounting hole, and a through hole is arranged at the fourth boss, reducing the machining steps, simplifying the process, and ensuring the quality of the automobile rear suspension control arm.
[0005] Preferably, a first trimming edge and a second trimming edge are respectively arranged on the left and right sides of the side board, and the first trimming edge and the second trimming edge can effectively reduce the stress concentration problem at this part and reduce the weight.
[0006] Preferably, a first weight reduction groove is arranged at the left end of the main board, a second weight reduction hole is arranged on one side of the first weight reduction groove, a second weight reduction groove is arranged at the right end of the main board, and the second weight reduction groove is used to reduce the opening stiffness, avoid the problem of difficult locking due to excessive stiffness, and reduce the weight at the same time.
[0007] Preferably, a first weight reduction hole is arranged between the fourth boss and the second weight reduction groove to reduce the weight.
[0008] Preferably, a rectangular boss is arranged at a position close to the first weight reduction hole on one side of the first boss, and the rectangular boss can effectively improve the strength of the part.
[0009] Preferably, a first positioning hole, a second positioning hole and a third positioning hole are provided on the outer periphery of the shock absorber spring mounting hole to achieve the function of process positioning.
[0010] Preferably, the control arm body is connected to the steering knuckle through a first screw and a first nut passing through the steering knuckle mounting hole, which is convenient for connection.
[0011] Preferably, the control arm body is connected to the subframe through a second screw and a second nut passing through the subframe mounting hole, which is convenient for connection.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] The structure is simple, which can effectively reduce the stamping difficulty, reduce the use of reinforcing plates, effectively avoid the part failure caused by weld fatigue problems, reduce the weight and cost under the condition of meeting the working condition requirements, and can solve the problems of complex process, large processing difficulty and high cost of the existing automotive rear suspension control arm. Description of the Drawings
[0014] Figure 1 is a three-dimensional structure diagram of the present utility model;
[0015] Figure 2 is a three-dimensional structure diagram of the control arm body of the present utility model;
[0016] Figure 3 is a three-dimensional structure diagram of the control arm body of the present utility model from different angles.
[0017] Reference Signs:
[0018] 1. Control arm body, 11. Main board, 12. Side board, 101. Flange, 102. Shock absorber spring mounting hole, 1021. Flange part, 103. Second boss, 104. Steering knuckle mounting hole, 105. Third boss, 106. Shock absorber mounting hole, 107. First boss, 108. Subframe mounting hole, 109. First positioning hole, 110. Second positioning hole, 111. Fourth boss, 112. Through hole, 113. First weight reducing hole, 114. First cutting edge, 115. First weight reducing groove, 116. Second weight reducing hole, 117. Third positioning hole, 118. Rectangular boss, 119. Second cutting edge, 120. Second weight reducing groove, 2. First nut, 3. First screw, 4. Second nut, 5. Second screw. Detailed Embodiments
[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model.
[0020] Such asFigures 1 - 3 As shown in the figure, in order to solve the problems of complex process, high processing difficulty and high cost of the existing automotive rear suspension control arm, the following technical solutions are provided: An automotive rear suspension control arm includes a control arm body 1. The control arm body 1 is formed by stamping a single-piece high-strength sheet. The cross-section of the control arm body 1 is in a "U" shape. The control arm body 1 includes a main board 11. On both sides of the main board 11, side boards 12 are relatively arranged. On the upper side of the side board 12, there is a flanging 101 to control the strength of the control arm body. At the right end of the side board 12, there is a first boss 107. The first boss 107 is in a "U" shape. The design of the opening direction of the "U" shape helps the stamping die to open. In the middle of the first boss 107, there is a subframe mounting hole 108. At the left end of the side board 12, there is a second boss 103. On the second boss 103, there is a steering knuckle mounting hole 104. On one side of the second boss 103, there is a third boss 105. The third boss 105 helps to reduce the stress concentration problem at this part. On the third boss 105, there is a shock absorber mounting hole 106. In the middle of the main board 11, there is a shock absorber spring mounting hole 102. The shock absorber spring mounting hole 102 is in a "D" shape. The "D" shaped hole can achieve the anti-rotation function. At the edge of the shock absorber spring mounting hole 102, there is a flanging part 1021 extending upward. At the right part of the shock absorber spring mounting hole 102, there is a fourth boss 111, which can effectively improve the strength of the part. At the fourth boss 111, there is a through hole 112, which reduces the machining steps, simplifies the process and ensures the quality of the automotive rear suspension control arm.
[0021] In this embodiment, as Figure 3 shown, on the left and right sides of the side board 12, there are respectively a first trimming edge 114 and a second trimming edge 119. The first trimming edge 114 and the second trimming edge 119 can effectively reduce the stress concentration problem at this part and reduce the weight.
[0022] In this embodiment, as Figure 3 shown, at the left end of the main board 11, there is a first weight reduction groove 115. On one side of the first weight reduction groove 115, there is a second weight reduction hole 116. At the right end of the main board 11, there is a second weight reduction groove 120 to reduce the weight.
[0023] In this embodiment, as Figure 3 shown, between the fourth boss 111 and the second weight reduction groove 120, there is a first weight reduction hole 113 to reduce the weight.
[0024] In this embodiment, as Figure 3 shown, near the position of the first weight reduction hole 113 on one side of the first boss 107, there is a rectangular boss 118. The rectangular boss 118 can effectively improve the strength of the part.
[0025] In this embodiment, as Figure 3 shown, a first positioning hole 109, a second positioning hole 110 and a third positioning hole 117 are provided on the outer periphery of the shock-absorbing spring mounting hole 102 to achieve the function of process positioning.
[0026] In this embodiment, as Figure 1 shown, the control arm body 1 is connected to the steering knuckle through a first screw 3 and a first nut 2 passing through the steering knuckle mounting hole 104, which is convenient for connection.
[0027] In this embodiment, as Figure 1 shown, the control arm body 1 is connected to the subframe through a second screw 5 and a second nut 4 passing through the subframe mounting hole 108, which is convenient for connection.
[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indicators will also change accordingly.
[0029] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0030] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0031] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.
Claims
1. A rear suspension control arm for an automobile, characterized in that: include: A control arm body (1), wherein the cross section of the control arm body (1) is in a "U" shape, and the control arm body (1) comprises a main board (11), side boards (12) are arranged opposite to each other on two sides of the main board (11), and a flange (101) is arranged on the upper side of the side board (12); A first boss (107) is provided at the right end of the side plate (12), a sub-frame mounting hole (108) is provided in the middle of the first boss (107), a second boss (103) is provided at the left end of the side plate (12), a steering knuckle mounting hole (104) is provided on the second boss (103), a third boss (105) is provided on one side of the second boss (103), and a shock absorber mounting hole (106) is provided on the third boss (105); A shock-absorbing spring mounting hole (102) is provided in the middle of the main board (11), a flange portion (1021) extending upward is provided at the edge of the shock-absorbing spring mounting hole (102), a fourth boss (111) is provided at the right portion of the shock-absorbing spring mounting hole (102), and a through hole (112) is provided at the fourth boss (111).
2. The automobile rear suspension control arm according to claim 1, characterized in that: The left and right sides of the side plate (12) are respectively provided with a first cutting edge (114) and a second cutting edge (119).
3. The automobile rear suspension control arm according to claim 1, characterized in that: A first weight-reducing groove (115) is provided at the left end of the main board (11), a second weight-reducing hole (116) is provided on one side of the first weight-reducing groove (115), and a second weight-reducing groove (120) is provided at the right end of the main board (11).
4. The automobile rear suspension control arm according to claim 3, characterized in that: A first weight-reducing hole (113) is provided between the fourth boss (111) and the second weight-reducing groove (120).
5. The automobile rear suspension control arm according to claim 4, characterized in that: A rectangular boss (118) is provided on one side of the first boss (107) at a position close to the first weight-reducing hole (113).
6. The automobile rear suspension control arm according to claim 1, characterized in that: The outer periphery of the shock-absorbing spring installation hole (102) is provided with a first positioning hole (109), a second positioning hole (110) and a third positioning hole (117).
7. The automobile rear suspension control arm according to claim 1, characterized in that: The control arm body (1) is connected to the steering knuckle via a first screw rod (3) and a first nut (2) passing through the steering knuckle mounting hole (104).
8. The automobile rear suspension control arm according to claim 1, characterized in that: The control arm body (1) is connected to the sub-frame via a second screw rod (5) and a second nut (4) passing through the sub-frame mounting hole (108).