A dual-channel air spring strut assembly and air spring assembly

Abstract

The utility model discloses a double -channel air spring support pillar assembly and air spring assembly, including upper support assembly, upper air chamber, piston rod, and upper support assembly includes vibration -isolating block, upper support, and vibration -isolating block fixedly is established in the upper support, and is connected fastening with piston rod through locking nut, and the upper support is rotatably connected with the upper air chamber through the plane bearing. In the utility model, the plane bearing is arranged between the upper support and the upper air chamber, the compensation torsion of the support assembly to the suspension is transferred to the bearing between the upper support assembly and the upper air chamber outside the air spring, so that the capsule skin is protected by reducing the additional use condition, and the rotation compensation is sufficient, so that the large angle compensation can be realized.

Description

Technical Field

[0001] This utility model relates to the field of air spring technology, and more specifically to a dual-channel air spring support assembly and an air spring assembly. Background Technology

[0002] With the development of the automobile consumer market and the improvement of driving and riding needs, integrated air spring struts are being used more and more widely in the suspensions of new energy and luxury fuel vehicles. In order to achieve a larger steering angle, the existing front spring double wishbone structure has been optimized from a "triangle" to a "quadrilateral". As we all know, the stability of a "quadrilateral" is worse than that of a "triangle". This means that the suspension applies a larger self-torsion and yaw angle to the air spring strut. Excessive self-torsion compensation will cause excessive relative rubbing of the inner and outer ply layers of the spring skin, resulting in delamination defects. In order to ensure the service life of the spring skin, it is necessary to avoid the spring skin from undergoing greater "self-torsion" while compensating for the suspension torsion. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to avoid excessive self-torsion compensation leading to delamination defects in the inner and outer pouch layers of the bladder skin.

[0004] This utility model solves the above-mentioned technical problems through the following technical means: a dual-channel air spring support assembly, including an upper support assembly, an upper air chamber, and a piston rod. The upper support assembly includes a vibration isolation block and an upper support. The vibration isolation block is fixedly installed in the upper support and is connected and fastened to the piston rod by a locking nut. The upper support is rotatably connected to the upper air chamber through a plane bearing.

[0005] As a preferred technical solution, the piston rod has a stepped surface at its end, and a vibration damping block is sleeved and fixed to the end of the piston rod, located above the plane of the stepped surface. A locking nut is threadedly connected to the piston rod.

[0006] As a preferred technical solution, the piston rod is also provided with a pad that is coaxial with the vibration isolation block and the upper support axis, and the plane where the bottom of the pad is located is coplanar with the plane where the step surface is located.

[0007] As a preferred technical solution, the planar bearing includes an upper ring and a lower ring, with the upper ring fixedly connected to the upper support and the lower ring fixedly connected to the upper air chamber.

[0008] As a preferred technical solution, the air chamber includes an upper shell and a lower shell that are fixedly connected, and the top of the upper shell is rotatably connected to the upper support through a planar bearing.

[0009] As a preferred technical solution, the upper support assembly also includes a nut body, and a groove adapted to the vibration isolation block is provided in the upper support. The nut body is threaded in the groove and abuts against the vibration isolation block.

[0010] As a preferred technical solution, the piston rod is sealed and fixed to the upper air chamber by at least two sealing rings, and the plane where the sealing rings are located is below the plane where the step surface is located.

[0011] As a preferred technical solution, it also includes an undulating piston, an anti-rotation block, and a shock absorber, with the undulating piston being connected and fastened to the shock absorber via the anti-rotation block.

[0012] As a preferred technical solution, the upper air chamber is connected to an air nozzle.

[0013] This utility model also provides an air spring assembly, including the above-mentioned dual-channel air spring support assembly.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) In this utility model, the planar bearing is set between the upper support and the upper air chamber. The compensation torsion of the suspension by the strut assembly is transferred to the bearing located between the upper support assembly and the upper air chamber outside the air spring, so that the bladder is protected by reducing additional working conditions. The rotation compensation is sufficient, which can realize large angle compensation.

[0016] (2) In this utility model, the surface bearing has a larger working area, which can transfer the compressive force of the buffer block to the upper support frame, thereby avoiding the vibration isolation block from being subjected to greater impact, protecting the vibration isolation block and improving its service life. Attached Figure Description

[0017] Figure 1 This is a schematic cross-sectional view of the dual-channel air spring strut assembly provided in Embodiment 1 of this utility model;

[0018] Figure 2 This is a schematic diagram of the upper support cross-sectional structure provided in Embodiment 1 of the present utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the nut body provided in Embodiment 1 of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the planar bearing provided in Embodiment 1 of this utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the upper shell provided in Embodiment 1 of this utility model;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the lower shell provided in Embodiment 1 of this utility model;

[0023] Reference numerals: 1. Nut body; 2. Locking nut; 3. Vibration isolation block; 4. Pad block; 5. Upper support; 6. Upper housing; 7. Sealing ring; 8. Lower housing; 9. Piston rod; 10. Anti-rotation block; 11. Irregular piston; 12. Air nozzle; 13. Surface bearing. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Example 1

[0026] See Figure 1 A dual-channel air spring support assembly includes a nut body 1, a locking nut 2, a vibration damping block 3, a pad 4, an upper support 5, an upper housing 6, a sealing ring 7, a lower housing 8, a piston rod 9, an anti-rotation block 10, an undulating piston 11, an air nozzle 12, and a plane bearing 13. The piston rod 9 of the vibration damper has a stepped surface at its end, and a pad 4 is fixedly connected to the stepped surface. The vibration damping block 3 is sleeved on the piston rod 9, and a locking nut 2 is threadedly connected to the top of the piston rod 9. The locking nut 2 presses the vibration damping block 3 and the pad 4 onto the stepped surface of the piston rod 9, and the locking nut 2 is located on the top of the vibration damping block 3.

[0027] The upper support assembly is composed of nut body 1, locking nut 2, vibration damping block 3, pad block 4, and upper support 5. The upper air chamber is composed of upper housing 6 and lower housing 8. The plane bearing 13 is placed between the upper support assembly and the upper air chamber. The torsional compensation of the suspension by the strut assembly is transferred to the bearing located between the upper support assembly and the upper air chamber outside the air spring, so that the bladder is protected by reducing additional operating conditions.

[0028] See Figure 1 The upper shell 6 and the lower shell 8 are fixedly connected and enclose each other to form an upper air chamber. The top of the upper air chamber is rotatably connected to the upper support 5 through a plane bearing 13. In this embodiment, the top of the upper shell 6 is rotatably connected to the upper support 5 through a plane bearing 13. The upper support 5 and the upper air chamber are connected by a plane bearing 13, which contacts each other but remains independent. The upper support 5 has a built-in vibration isolation block 3, and a groove adapted to the vibration isolation block 3 is opened in the upper support 5. (See reference...) Figure 2 , Figure 3The groove has an internal thread, and the top of the upper support 5 is also threaded with a nut body 1. The nut body 1 has an external thread that matches the internal thread in the circumference. The nut body 1 presses the vibration isolation block 3 into the groove. In this example, the plane bearing 13 includes an upper ring and a lower ring. The upper ring of the plane bearing 13 is fixedly connected to the upper support 5, and the lower ring of the plane bearing 13 is fixedly connected to the upper housing 6. A buffer block is connected to the bottom of the upper housing 6, and the buffer block is sleeved on the outside of the piston rod 9.

[0029] See Figure 1 The air nozzle 12 is connected to the upper air chamber and is used to provide a high-pressure air source for the entire air spring. At least two coaxially arranged sealing rings 7 are provided on the piston rod 9. In this embodiment, the sealing rings 7 are located in the area below the step surface of the piston rod 9. The piston rod 9 is sealed and fixed to the upper housing 6 through the sealing rings 7. The shock absorber is fixedly connected to the undulating piston 11. The undulating piston 11 at the lower end of the air spring is held tightly on the outer cylinder wall of the shock absorber by the anti-rotation block 10 and forms an integral part with the shock absorber. The anti-rotation block 10, the undulating piston 11, and the shock absorber are coaxially arranged. A spring plate is fixedly connected to the outer cylinder wall of the shock absorber. The spring plate supports the anti-rotation block 10. The lower end of the undulating piston 11 is fixedly connected to the anti-rotation block 10.

[0030] When the suspension deforms and torsions due to the vertical movement of the wheels, the friction torque of the plane bearing 13 located at the connecting end of the piston rod 9 in the entire system is minimal, thus compensating for the torsion. This reduces the additional operating conditions of the bladder and protects it. The rotational compensation is sufficient and can achieve large-angle compensation. Since the plane bearing 13 has a larger working area, it can transfer the compressive force of the buffer block to the frame of the upper support 5, thereby preventing the vibration isolation block 3 from suffering greater impact, protecting the vibration isolation block 3, and extending its service life.

[0031] Example 2

[0032] The difference between this embodiment and Embodiment 1 is that an air spring including the dual-channel air spring support assembly of Embodiment 1 is provided.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dual-channel air spring strut assembly, characterized in that, It includes an upper support assembly, an upper air chamber, and a piston rod. The upper support assembly includes a vibration isolation block and an upper support. The vibration isolation block is fixedly installed inside the upper support and is connected and fastened to the piston rod by a locking nut. The upper support is rotatably connected to the upper air chamber through a plane bearing.

2. The dual-channel air spring strut assembly according to claim 1, characterized in that, The piston rod has a stepped surface at its end. The vibration isolation block is sleeved and fixed at the end of the piston rod and is located above the plane of the stepped surface. The locking nut is threadedly connected to the piston rod.

3. The dual-channel air spring strut assembly according to claim 1, characterized in that, The piston rod is also equipped with a pad that is coaxial with the vibration isolation block and the upper support axis, and the plane where the bottom of the pad is located is coplanar with the plane where the step surface is located.

4. The dual-channel air spring strut assembly according to claim 1, characterized in that, A surface bearing consists of an upper ring and a lower ring. The upper ring is fixedly connected to the upper support, and the lower ring is fixedly connected to the upper air chamber.

5. A dual-channel air spring strut assembly according to claim 1, characterized in that, The upper air chamber includes a fixedly connected upper shell and a lower shell, with the top of the upper shell rotatably connected to the upper support via a planar bearing.

6. A dual-channel air spring strut assembly according to claim 1, characterized in that, The upper support assembly also includes a nut body, and a groove adapted to the vibration isolation block is provided inside the upper support. The nut body is threaded into the groove and abuts against the vibration isolation block.

7. A dual-channel air spring strut assembly according to claim 2, characterized in that, The piston rod is sealed and fixed to the upper air chamber by at least two sealing rings, and the plane of the sealing rings is located below the plane of the step surface.

8. A dual-channel air spring strut assembly according to claim 1, characterized in that, It also includes a undulating piston, an anti-rotation block, and a shock absorber. The undulating piston is connected and fastened to the shock absorber through the anti-rotation block.

9. A dual-channel air spring strut assembly according to claim 1, characterized in that, The upper air chamber is connected to an air nozzle.

10. An air spring assembly, characterized in that, Includes the dual-channel air spring strut assembly as described in any one of claims 1-9.

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