Air bag for improving stability of suspension of passenger car

Abstract

The utility model discloses an air bag for increasing the stability of a suspension of a passenger car, which is arranged in a spiral spring of the suspension and comprises an air bag body, a cushion block and an inflating valve, the air bag body is of a hollow structure, an air hole is arranged on the air bag body, the inflating valve is arranged on the air hole, and the cushion block is arranged on one side, contacted with the suspension, of the air bag body. The device can be independently installed in the spiral spring, is low in cost, can effectively filter road bumping, and provides better comfort.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile suspension, in particular to an air bag for increasing the stability of passenger car suspension. Background Art

[0002] The elastic element in the current traditional suspension of passenger cars is a coil spring. Due to the high stiffness of the coil spring, it is relatively stiff when dealing with road impacts and unevenness, and the comfort is relatively poor. The air suspension, which focuses on comfort, is currently mainly used in high-end models due to its high manufacturing cost and is not widely used. Utility Model Content

[0003] The purpose of the utility model is to provide an air bag for increasing the stability of the suspension of a passenger car. The utility model can be independently installed in a coil spring and has a low cost. It can effectively filter road bumps and provide better comfort.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an airbag for increasing the stability of a passenger car suspension, installed in a coil spring of the suspension, comprising an airbag body, a cushion block and an air valve, the airbag body being a hollow structure, the airbag body being provided with an air hole, the valve nozzle being installed on the air hole, and the cushion block being arranged on the side of the airbag body in contact with the suspension.

[0005] By adopting the above technical solution, the airbag can be independently installed in the coil spring at a low cost, can effectively filter road bumps, provide better comfort, and solve the problems of high cost of purchasing air suspension models and inability to convert traditional suspensions into air suspensions. A pad is provided at the contact portion between the airbag body and the suspension, and the airbag body is protected by the pad to prevent the airbag body from directly contacting the metal surface, which will cause wear over time and lead to a reduction in service life.

[0006] The utility model is further configured to include an elastic support member for installing a valve, the elastic support member includes a support plate and an elastic extension portion arranged at the center of the support plate, the support plate and the surface of the airbag body are vulcanized together, an outer hole is provided through the middle of the elastic support member, an inner hole is provided through the surface of the airbag body, the outer hole and the inner hole form the air hole, and the valve is inserted into the outer hole of the support member and the two are vulcanized together.

[0007] By adopting the above technical solution, it is not only convenient for processing, but also the connection strength between components is high and the structure is very stable and reliable.

[0008] The utility model is further configured that a recessed portion is provided on the surface of the airbag body, and the support plate of the elastic support member is embedded in the recessed portion.

[0009] By adopting the above technical solution, not only the reliability of the connection between the elastic support part and the airbag body can be improved, but also the surface of the airbag body can be made smoother. Only the elastic extension part of the elastic support part and the valve nozzle protrude from the surface of the airbag body, occupying less space, avoiding interference with other components, and being more conducive to installation.

[0010] The utility model is further configured that a valve cover is installed on the valve.

[0011] By adopting the above technical solution, dirt such as mud and sand can be prevented from entering the valve stem, causing the valve stem to be blocked or rusted, thereby avoiding damage to the valve stem or air leakage.

[0012] The utility model is further configured such that the airbag body is cylindrical in shape, and the upper and lower edges of the airbag body are chamfered, and the upper and lower edges of the inner cavity of the airbag body are provided with inwardly protruding annular reinforcement parts, and the annular reinforcement parts are in the shape of arc protrusions.

[0013] By adopting the above technical solution, the strength of the airbag body can be improved, the edge of the end of the airbag body can be prevented from being damaged due to long-term stress concentration, and the service life of the airbag body can be increased.

[0014] The utility model is further configured that a plurality of reinforcing ribs are arranged on the inner side wall of the airbag body along the circumferential direction, and each reinforcing rib extends along the vertical direction.

[0015] By adopting the above technical solution, the overall strength of the airbag body can be further improved, thereby significantly increasing the service life of the airbag body.

[0016] The utility model is further configured that the elastic extension portion includes a cylindrical section and a conical section integrally arranged at the outer end of the cylindrical section, and the cross-sectional area of ​​the conical section gradually decreases in a direction away from the airbag body.

[0017] By adopting the above technical solution, it is not only easy to process, but also has high strength and good resilience.

[0018] The utility model is further configured such that the elastic support member and the valve nozzle are arranged at the top of the airbag body, the cushion block is also arranged at the top of the airbag body, and the cushion block is provided with a through hole for the valve nozzle to pass through; and the through hole includes a large hole and a small hole arranged coaxially, and the large hole is arranged at one end of the cushion block close to the airbag body.

[0019] By adopting the above technical solution, this is the first structure in which the airbag is integrally adapted to the position of the air nozzle of the vehicle body.

[0020] The utility model is further configured such that the elastic support member and the valve nozzle are arranged on the side of the airbag body, the cushion block is arranged at the bottom of the airbag body, and the end of the cushion block close to the airbag body is provided with an annular recess for embedding the bottom edge of the airbag body, and the end of the cushion block away from the airbag body is provided with a barb portion for plug-in cooperation with the suspension swing arm.

[0021] By adopting the above technical solution, this is the second structure in which the airbag is integrally adapted to the position of the air nozzle of the vehicle body.

[0022] The utility model is further configured that the support plate is provided with an annular groove at a position corresponding to the outer periphery of the elastic extension portion.

[0023] By adopting the above technical solution, the bending deformation of the elastic extension part is facilitated, so that the boundary between the elastic extension part and the support plate is not easily torn. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of Example 1;

[0025] Figure 2 It is an exploded view of the overall structure of Example 1;

[0026] Figure 3 It is a schematic diagram of the overall structure of Example 2;

[0027] Figure 4 This is an exploded view of the overall structure of Example 2.

[0028] In the figure: 1. airbag body; 2. pad; 3. valve; 4. air hole; 5. elastic support member; 6. support plate; 7. elastic extension; 8. outer hole; 9. inner hole; 10. recessed portion; 11. valve cover; 12. annular reinforcement portion; 13. reinforcing rib; 14. cylindrical section; 15. conical section; 16. through hole; 17. large hole; 18. small hole; 19. annular recess; 20. barb portion; 21. annular groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1: As attached Figure 1 and attached Figure 2The airbag shown in the figure is used to increase the stability of the passenger car suspension. The airbag is installed in the coil spring of the suspension. The airbag includes an airbag body 1, a cushion block 2 and an air valve 3. The airbag body 1 is a hollow structure. The airbag body 1 is provided with an air hole 4. The air valve 3 is installed on the air hole 4. The cushion block 2 is arranged on the side where the airbag body 1 contacts the suspension. The airbag can be independently installed in the coil spring, and the cost is not high. It can effectively filter the road bumps and provide better comfort. It solves the problem that the cost of purchasing air suspension models is too high and the traditional suspension cannot be converted into air suspension. The cushion block 2 is arranged at the part where the airbag body 1 contacts the suspension. The cushion block 2 protects the airbag body 1 to prevent the airbag body 1 from directly contacting the metal surface, which will cause wear over time and reduce the service life.

[0031] As attached Figure 1 and attached Figure 2 As shown, the airbag also includes an elastic support member 5 for installing the valve 3, the elastic support member 5 includes a support plate 6 and an elastic extension 7 arranged at the center of the support plate 6, the support plate 6 and the surface of the airbag body 1 are vulcanized together, the middle of the elastic support member 5 is provided with an outer hole 8, the surface of the airbag body 1 is provided with an inner hole 9, the outer hole 8 and the inner hole 9 are coaxially arranged, and the outer hole 8 and the inner hole 9 form the air hole 4, the valve 3 is plugged into the outer hole 8 of the support member and the two are vulcanized together. This design is not only conducive to processing, but also has high connection strength between components, and the structure is very stable and reliable.

[0032] As attached Figure 1 and attached Figure 2 As shown, the surface of the airbag body 1 is provided with a recessed portion 10, and the support plate 6 of the elastic support member 5 is embedded in the recessed portion 10. This design can not only improve the reliability of the connection between the elastic support member 5 and the airbag body 1, but also make the surface of the airbag body 1 smoother. Only the elastic extension portion 7 of the elastic support member 5 and the valve 3 protrude from the surface of the airbag body 1, occupying less space, avoiding interference with other components, and being more convenient for installation.

[0033] As attached Figure 1 and attached Figure 2 As shown, a valve cover 11 is installed on the valve 3, and the valve cover 11 is threadedly connected to the valve 3. This design can prevent dirt such as mud and sand from entering the valve 3, causing the valve 3 to be blocked or rusted, and avoid damage or leakage of the valve 3.

[0034] As attached Figure 1 and attached Figure 2As shown, the airbag body 1 is cylindrical, and the upper and lower edges of the airbag body 1 are chamfered, and the upper and lower edges of the airbag body 1 in the inner cavity are provided with an annular reinforcement part 12 protruding inward, and the annular reinforcement part 12 is in an arc-shaped protrusion. This design can improve the strength of the airbag body 1, avoid damage to the edge of the end of the airbag body 1 due to long-term stress concentration, and improve the service life of the airbag body 1.

[0035] As attached Figure 1 and attached Figure 2 As shown, a plurality of reinforcing ribs 13 are arranged circumferentially on the inner wall of the airbag body 1, each reinforcing rib 13 extends in the vertical direction, and the upper and lower ends of the reinforcing rib 13 respectively abut against the annular reinforcing parts 12 on the upper and lower inner walls of the airbag body 1. This design can further improve the overall strength of the airbag body 1, thereby significantly improving the service life of the airbag body 1.

[0036] As attached Figure 1 and attached Figure 2 As shown, the elastic extension 7 includes a cylindrical section 14 and a tapered section 15 integrally arranged at the outer end of the cylindrical section 14, and the cross-sectional area of ​​the tapered section 15 gradually decreases in the direction away from the airbag body 1. This design is not only easy to process, but also has high strength and good resilience.

[0037] As attached Figure 1 and attached Figure 2 As shown, the elastic support member 5 and the valve 3 are arranged at the top of the airbag body 1, the cushion block 2 is also arranged at the top of the airbag body 1, and the cushion block 2 is provided with a through hole 16 for the valve 3 to pass through; and the through hole 16 includes a large hole 17 and a small hole 18 arranged coaxially, and the large hole 17 is arranged at one end of the cushion block 2 close to the airbag body 1. This is the first structure in which the airbag is integrally adapted to the position of the air valve of the vehicle body.

[0038] Embodiment 2 is different from embodiment 1. Figure 3 and attached Figure 4 As shown, in this embodiment, the elastic support member 5 and the valve 3 are arranged on the side of the airbag body 1, the cushion block 2 is arranged at the bottom of the airbag body 1, and the end of the cushion block 2 close to the airbag body 1 is provided with an annular recess 19 for embedding the bottom edge of the airbag body 1, the annular recess 19 is arc-shaped, and the cushion block 2 is located in the middle of the annular recess 19 to form an arc-shaped convex structure, and the end of the cushion block 2 away from the airbag body 1 is provided with a barb 20 for plugging and matching with the suspension swing arm. This is the second structure of the airbag as a whole adapting to the air valve position of the vehicle body.

[0039] As attached Figure 3 and attached Figure 4As shown, the support plate 6 is provided with an annular groove 21 at a position corresponding to the outer periphery of the elastic extension 7, and the annular groove 21 plays the role of making way and dispersing stress. This design is conducive to the bending deformation of the elastic extension 7, so that the junction between the elastic extension 7 and the support plate 6 is not easy to tear.

Claims

1. An airbag for increasing the stability of a passenger car suspension, installed in a coil spring of the suspension, characterized in that: The invention comprises an airbag body (1), a cushion block (2) and an air valve (3); the airbag body (1) is a hollow structure; an air hole (4) is arranged on the airbag body (1); the air valve (3) is mounted on the air hole (4); and the cushion block (2) is arranged on the side of the airbag body (1) in contact with the suspension.

2. The airbag for increasing the stability of a passenger vehicle suspension according to claim 1, characterized in that: It also includes an elastic support member (5) for installing the valve (3), the elastic support member (5) includes a support plate (6) and an elastic extension portion (7) arranged at the center of the support plate (6), the support plate (6) and the surface of the airbag body (1) are vulcanized together, the middle of the elastic support member (5) is provided with an outer hole (8), the surface of the airbag body (1) is provided with an inner hole (9), the outer hole (8) and the inner hole (9) form the air hole (4), the valve (3) is inserted into the outer hole (8) of the support member and the two are vulcanized together.

3. The airbag for increasing the stability of a passenger vehicle suspension according to claim 2, characterized in that: The surface of the airbag body (1) is provided with a recessed portion (10), and the support plate (6) of the elastic support member (5) is embedded in the recessed portion (10).

4. The airbag for increasing the stability of a passenger vehicle suspension according to claim 1, characterized in that: A valve cover (11) is installed on the valve (3).

5. The airbag for increasing the stability of a passenger vehicle suspension according to claim 1, characterized in that: The airbag body (1) is cylindrical in shape, and the upper and lower edges of the airbag body (1) are chamfered. The upper and lower edges of the airbag body (1) in the inner cavity are provided with an inwardly protruding annular reinforcement parts (12), and the annular reinforcement parts (12) are in the shape of arc protrusions.

6. The airbag for increasing the stability of a passenger vehicle suspension according to claim 1, characterized in that: A plurality of reinforcing ribs (13) are arranged on the inner side wall of the airbag body (1) along the circumferential direction, and each reinforcing rib (13) extends in the vertical direction.

7. The airbag for increasing the stability of a passenger vehicle suspension according to claim 2, characterized in that: The elastic extension portion (7) comprises a cylindrical section (14) and a conical section (15) integrally arranged at the outer end of the cylindrical section (14), and the cross-sectional area of ​​the conical section (15) gradually decreases in a direction away from the airbag body (1).

8. The airbag for increasing the stability of a passenger vehicle suspension according to claim 7, characterized in that: The elastic support member (5) and the valve (3) are arranged at the top of the airbag body (1), and the cushion block (2) is also arranged at the top of the airbag body (1), and the cushion block (2) is provided with a through hole (16) for allowing the valve (3) to pass through; and the through hole (16) includes a large hole (17) and a small hole (18) arranged coaxially, and the large hole (17) is arranged at one end of the cushion block (2) close to the airbag body (1).

9. The airbag for increasing the stability of a passenger vehicle suspension according to claim 2, characterized in that: The elastic support member (5) and the valve (3) are arranged on the side of the airbag body (1), the cushion block (2) is arranged at the bottom of the airbag body (1), and the end of the cushion block (2) close to the airbag body (1) is provided with an annular recess (19) for embedding the bottom edge of the airbag body (1), and the end of the cushion block (2) away from the airbag body (1) is provided with a barb (20) for plug-in cooperation with the suspension swing arm.

10. An airbag for increasing the stability of a passenger vehicle suspension according to claim 9, characterized in that: The support plate (6) is provided with an annular groove (21) at a position corresponding to the outer periphery of the elastic extension portion (7).

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