Independent air suspension support arm

Abstract

An independent air suspension supporting arm relates to the technical field of vehicle accessories and comprises an air bag supporting arm and a shock absorber supporting arm, the air bag supporting arm and the shock absorber supporting arm are integrally formed, an air bag mounting hole is formed in the connecting position of the air bag supporting arm and the shock absorber supporting arm, and the end of the air bag supporting arm is arranged to be a mounting end. The bottom of the air bag supporting arm is sequentially provided with a plurality of special-shaped structure grooves from the mounting end to the shock absorber supporting arm in the extending direction of the air bag supporting arm. And a shock absorber mounting hole is formed in the end part of the shock absorber supporting arm. The air bag supporting arm and the shock absorber supporting arm are integrated, the forming efficiency can be improved, the production cost can be reduced, the connecting strength and rigidity can be improved, and the product quality and the use safety can be improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to an independent air suspension support arm. Background Technology

[0002] As a key component of the independent suspension system, the support arm primarily bears the reaction forces of the air spring (airbag) and shock absorber. Its structure consists of two parts: the airbag support arm and the shock absorber support arm. The core function of the airbag support arm is to bear the vehicle's weight load and buffer road impacts; the shock absorber support arm is mainly used to fix the shock absorber, while also achieving impact load transfer, vibration amplitude suppression, and suspension trajectory optimization. Its performance directly affects the vehicle's comfort, handling stability, and durability. In engineering design, the support arm not only needs to meet performance indicators such as structural layout rationality and strength and stiffness, but also requires careful consideration of practical issues such as the feasibility of a one-time casting process and optimization of process yield.

[0003] like Figure 5 As shown, however, in the existing support arm structure design, the existing airbag support arm 5 adopts an I-shaped structure. During the casting process, a sand core needs to be added at the position of each existing reinforcing rib 51, which makes it impossible to achieve integrated casting of this component, increasing production costs and reducing molding efficiency. In addition, the existing airbag support arm 5 and the existing shock absorber support arm 6 are assembled using multiple bolts, which not only increases the assembly process but also directly affects manufacturing efficiency. Moreover, once pressure is applied at the connection point, the existing airbag support arm 5 and the existing shock absorber support arm 6 are prone to wear due to overlapping pressure, which is not conducive to later disassembly and long-term safe use. Utility Model Content

[0004] In view of this, the technical problem to be solved by this utility model is to provide an independent air suspension support arm that integrates the airbag support arm and the shock absorber support arm into one unit, which can improve molding efficiency, reduce production costs, improve connection strength and rigidity, and improve product quality and safety of use.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] An independent air suspension support arm includes an airbag support arm and a shock absorber support arm. The airbag support arm and the shock absorber support arm are integrally formed. An airbag mounting hole is provided at the connection between the airbag support arm and the shock absorber support arm. The end of the airbag support arm is set as the mounting end. Several irregularly shaped grooves are sequentially provided on the bottom of the airbag support arm from the mounting end to the shock absorber support arm along its extension direction.

[0007] The end of the shock absorber support arm is provided with a shock absorber mounting hole.

[0008] Preferably, the irregularly shaped groove includes a first groove, a second groove, a third groove, and a fourth groove.

[0009] The first structural groove is disposed at the mounting end, the third structural groove is disposed at the riser of the airbag support arm, and the fourth structural groove is coaxially disposed with the airbag mounting hole.

[0010] Preferably, the mounting end is provided with two connecting protrusions that protrude outward in the horizontal direction, and the two connecting protrusions are arranged vertically parallel to each other on the outside of the first structural groove.

[0011] Preferably, the mounting end is provided with a plurality of horizontally arranged bolt mounting holes.

[0012] Preferably, the top and bottom of the airbag support arm are provided with transition reinforcing ribs, the transition reinforcing ribs are connected to the mounting end, and the transition reinforcing ribs are disposed between two adjacent bolt mounting holes.

[0013] Preferably, vertically, the height of the mounting end is greater than the height of the airbag mounting hole, and the height of the airbag mounting hole is greater than the height of the shock absorber mounting hole.

[0014] Preferably, an airbag mounting plane is provided on the outer side of the airbag mounting hole, and a shock-absorbing reinforcing rib is provided on the outer side of the shock absorber mounting hole.

[0015] Preferably, the top and bottom of the shock absorber support arm are provided with weight reduction grooves.

[0016] Preferably, the airbag support arm and the shock absorber support arm are respectively provided with a first auxiliary mounting hole and a second auxiliary mounting hole, and the first auxiliary mounting hole and the second auxiliary mounting hole are provided on the same side.

[0017] Preferably, a reinforcing boss is provided on the outer side of both the first auxiliary mounting hole and the second auxiliary mounting hole.

[0018] After adopting the above technical solution, the beneficial effects of this utility model are:

[0019] Because the independent air suspension support arm of this application includes an airbag support arm and a shock absorber support arm, the airbag support arm and the shock absorber support arm are integrally formed, and there is no need to connect the two with bolts, which improves the forming efficiency and also improves the connection strength and rigidity; moreover, there will be no wear between the two, which improves the service life.

[0020] An airbag mounting hole is provided at the connection between the airbag support arm and the shock absorber support arm. The end of the airbag support arm is designated as the mounting end, and several irregularly shaped structural grooves are sequentially arranged along the bottom of the airbag support arm from the mounting end to the shock absorber support arm. By incorporating these irregularly shaped structural grooves at the bottom of the airbag support arm, the traditional practice of placing the structural grooves on the sidewall of the airbag support arm is changed. This facilitates the integral casting of the airbag support arm and the shock absorber support arm. Furthermore, the irregularly shaped structural grooves can be directly formed using sand molding, eliminating the need for separate sand core fabrication and reducing sand core manufacturing costs. While ensuring product performance (strength and fatigue), adjusting the distribution of the original structural grooves results in a more uniform wall thickness distribution, avoiding thermal sintering and shrinkage porosity problems caused by uneven thickness, and improving the product's yield and pass rate.

[0021] The end of the shock absorber support arm is provided with a shock absorber mounting hole, which makes it easy to directly install the shock absorber onto the shock absorber support arm, thus meeting the installation requirements of the shock absorber. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the structure of the independent air suspension support arm according to an embodiment of this utility model;

[0024] Figure 2 yes Figure 1 Top view;

[0025] Figure 3 yes Figure 2 AA section view;

[0026] Figure 4 yes Figure 1 A structural diagram from another direction;

[0027] Figure 5 This is a schematic diagram of the support arm structure in the prior art;

[0028] In the picture:

[0029] 1. Airbag support arm; 11. Airbag mounting hole; 12. Mounting end; 13. Connecting protrusion; 14. Bolt mounting hole; 15. Transition reinforcing rib; 16. Airbag mounting plane; 17. First auxiliary mounting hole;

[0030] 2. Shock absorber support arm; 21. Shock absorber mounting hole; 22. Shock absorber reinforcing rib; 23. Weight reduction groove; 24. Second auxiliary mounting hole;

[0031] 3. Irregularly shaped groove; 31. First structural groove; 32. Second structural groove; 33. Third structural groove; 34. Fourth structural groove;

[0032] 4. Reinforce the boss;

[0033] 5. Existing airbag support arm; 51. Existing reinforcing rib;

[0034] 6. Existing shock absorber support arm;

[0035] 7. Air spring;

[0036] 8. Shock absorbers. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0038] like Figures 1 to 3 As shown in the figure, the independent air suspension support arm disclosed in this utility model includes an airbag support arm 1 and a shock absorber support arm 2. The airbag support arm 1 and the shock absorber support arm 2 are integrally formed, and there is no need to connect them with bolts, which improves the forming efficiency and also improves the connection strength and rigidity; moreover, there will be no wear between the two, which improves the service life.

[0039] In actual production, the airbag support arm 1 and the shock absorber support arm 2 are integrally cast and the connection between the two is set as a T-shaped structure, which improves the fluidity of molten iron and the filling capacity during casting. The product has a small cooling temperature gradient and a consistent cooling rate, which ensures a balanced product temperature distribution and ensures consistent product performance and structural stability.

[0040] An airbag mounting hole 11 is provided at the connection between the airbag support arm 1 and the shock absorber support arm 2. The airbag mounting hole 11 is used to install the air spring 7, which is also called an airbag.

[0041] The end of the airbag support arm 1 is designated as the mounting end 12. Several irregularly shaped structural grooves 3 are sequentially arranged from the mounting end 12 towards the shock absorber support arm 2 along the bottom of the airbag support arm 1. By providing several irregularly shaped structural grooves 3 at the bottom of the airbag support arm 1, the traditional practice of placing structural grooves on the sidewall of the airbag support arm 1 is changed. This facilitates the integral casting of the airbag support arm 1 and the shock absorber support arm 2. Furthermore, the irregularly shaped structural grooves 3 can be directly formed using sand molds, eliminating the need for separate sand core fabrication and reducing sand core manufacturing costs. While ensuring product performance (strength and fatigue), adjusting the distribution of the original structural grooves makes the wall thickness distribution more uniform, avoiding thermal sintering and shrinkage porosity problems caused by uneven thickness, and improving the product's yield and pass rate.

[0042] Preferably, the height of the mounting end 12 is greater than the height of the airbag mounting hole 11, and the height of the airbag mounting hole 11 is greater than the height of the shock absorber mounting hole 21. This facilitates the flow of molten iron during casting and also meets the installation and use requirements of the independent air suspension support arm of this application.

[0043] The end of the shock absorber support arm 2 is provided with a shock absorber mounting hole 21, which facilitates the direct installation of the shock absorber 8 onto the shock absorber support arm 2, thus meeting the installation requirements of the shock absorber 8.

[0044] In this application, the irregularly shaped groove 3 includes a first groove 31, a second groove 32, a third groove 33, and a fourth groove 34. The first groove 31 is located at the mounting end 12, the third groove 33 is located at the riser of the airbag support arm 1, and the fourth groove 34 is coaxially arranged with the airbag mounting hole 11.

[0045] The mounting end 12 is provided with two connecting protrusions 13 protruding outward in the horizontal direction, and the two connecting protrusions 13 are arranged vertically parallel to each other on the outside of the first structural groove 31. When the present application is installed through the mounting end 12, the two connecting protrusions 13 are used for connection, which facilitates the connection and fixation of the present application.

[0046] The mounting end 12 is provided with a plurality of horizontally arranged bolt mounting holes 14. In this application, the mounting end 12 is connected and fixed by bolts passing through the bolt mounting holes 14.

[0047] The airbag support arm 1 is provided with transition reinforcing ribs 15 at both the top and bottom. The transition reinforcing ribs 15 are connected to the mounting end 12 and are located between two adjacent bolt mounting holes 14. By providing transition reinforcing ribs 15 and connecting them to the mounting end 12, the connection strength of the mounting end 12 is increased and stress concentration is reduced.

[0048] like Figures 2 to 4 As shown in the present application, an airbag mounting surface 16 is provided on the outer side of the airbag mounting hole 11 to facilitate the installation of the air spring 7; a shock absorber mounting hole 21 is provided on the outer side of the shock absorber reinforcing rib 22 to enhance the connection strength between the shock absorber mounting hole 21 and the shock absorber support arm 2.

[0049] The top and bottom of the shock absorber support arm 2 are provided with weight reduction grooves 23 to reduce the overall weight of the shock absorber support arm 2.

[0050] The airbag support arm 1 and the shock absorber support arm 2 are respectively provided with a first auxiliary mounting hole 17 and a second auxiliary mounting hole 24, which are located on the same side. Both the first auxiliary mounting hole 17 and the second auxiliary mounting hole 24 are used to install the wiring harness, which facilitates the fixing of the wiring harness in position as needed.

[0051] Reinforcing bosses 4 are provided on the outer sides of both the first auxiliary mounting hole 17 and the second auxiliary mounting hole 24. The independent air suspension support arm of this application is subjected to bending stress, and the first auxiliary mounting hole 17 and the second auxiliary mounting hole 24 are weak points in fatigue life. By providing reinforcing bosses 4 on the outer sides of both, the fatigue life strength can be increased.

[0052] like Figure 1 , Figure 5 As shown in the figure, the independent air suspension support arm of this application is a modification of the existing support arm structure. In the existing support arm structure, the existing airbag support arm 5 and the existing shock absorber support arm 6 are independent and are detachably connected by four bolts. During installation, the two need to be assembled together, thus increasing the assembly process.

[0053] The existing reinforcing ribs 51 on the existing airbag support arm 5 are formed on the side walls on both sides. They are formed by adding sand cores at the side wall positions. However, placing the sand cores at the side walls makes it impossible to achieve integrated casting of the existing airbag support arm 5. Therefore, it reduces the forming efficiency and increases the production cost.

[0054] Therefore, the independent air suspension support arm of this application is integrally cast, forming the airbag support arm 1 and the shock absorber support arm 2 in one piece, which improves molding efficiency. Furthermore, by eliminating the detachable connection between the two, the connection strength and rigidity are improved, thus enhancing product quality and safety. In use, the air spring 7 is installed in the airbag mounting hole 11, and the shock absorber 8 is installed in the shock absorber mounting hole 21.

[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An independent air suspension support arm, comprising an airbag support arm and a shock absorber support arm, characterized in that, The airbag support arm and the shock absorber support arm are integrally formed. An airbag mounting hole is provided at the connection between the airbag support arm and the shock absorber support arm. The end of the airbag support arm is set as the mounting end. Several irregularly shaped grooves are sequentially provided on the bottom of the airbag support arm from the mounting end to the shock absorber support arm along its extension direction. The end of the shock absorber support arm is provided with a shock absorber mounting hole.

2. The independent air suspension support arm as described in claim 1, characterized in that, The irregularly shaped groove includes a first groove, a second groove, a third groove, and a fourth groove. The first structural groove is disposed at the mounting end, the third structural groove is disposed at the riser of the airbag support arm, and the fourth structural groove is coaxially disposed with the airbag mounting hole.

3. The independent air suspension support arm as described in claim 2, characterized in that, The mounting end is provided with two connecting protrusions that protrude outward in the horizontal direction, and the two connecting protrusions are arranged vertically parallel to each other on the outside of the first structural groove.

4. The independent air suspension support arm as described in claim 1, characterized in that, The mounting end is provided with several horizontally arranged bolt mounting holes.

5. The independent air suspension support arm as described in claim 4, characterized in that, The airbag support arm is provided with transition reinforcing ribs at both the top and bottom. The transition reinforcing ribs are connected to the mounting end and are located between two adjacent bolt mounting holes.

6. The independent air suspension support arm as described in claim 1, characterized in that, Vertically, the height of the mounting end is greater than the height of the airbag mounting hole, and the height of the airbag mounting hole is greater than the height of the shock absorber mounting hole.

7. The independent air suspension support arm as described in claim 1, characterized in that, An airbag mounting surface is provided on the outside of the airbag mounting hole, and a shock-absorbing reinforcing rib is provided on the outside of the shock absorber mounting hole.

8. The independent air suspension support arm as described in claim 1, characterized in that, The top and bottom of the shock absorber support arm are provided with weight reduction grooves.

9. The independent air suspension support arm as described in claim 1, characterized in that, The airbag support arm and the shock absorber support arm are respectively provided with a first auxiliary mounting hole and a second auxiliary mounting hole, and the first auxiliary mounting hole and the second auxiliary mounting hole are located on the same side.

10. The independent air suspension support arm as described in claim 9, characterized in that, Both the first auxiliary mounting hole and the second auxiliary mounting hole have reinforcing bosses on their outer sides.

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