An air spring strut assembly and air spring

Abstract

The utility model discloses a kind of air spring support pillar assembly and air spring, including shock absorber, upper support assembly, bearing, locking nut and damping pad, the piston rod of shock absorber extends air spring and is connected with upper support assembly through bearing and is locked through locking nut, damping pad is set on the upper shell of air spring and is used to support upper support assembly.The utility model is characterized in that, the piston rod on damper can rotate on bearing, compensate for torsion, so that the torsion that cylinder body exerts to heave piston greatly reduces, thereby reducing the torsion to capsule skin, prevent the relative rubbing of the excessive relative rubbing of inner and outer lining layer of capsule skin and occur delamination defect, further guarantee the air tightness of air spring, prevent air spring from leaking.

Description

Technical Field

[0001] This utility model relates to the field of air spring technology, specifically to an air spring support assembly and an air spring. 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, air leakage, and affecting the air tightness of the air spring. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to ensure the airtightness of the air spring.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A spring support assembly includes a shock absorber, an upper support assembly, a bearing, a locking nut, and a damping pad. The piston rod of the shock absorber extends out of the spring and is connected to the upper support assembly via the bearing and locked by the locking nut. The damping pad is sleeved on the upper housing of the spring to support the upper support assembly.

[0006] When the suspension deforms and torsions due to the up-and-down movement of the wheels, the piston rod on the shock absorber can rotate on the bearing to compensate for the torsion. This greatly reduces the torsion exerted by the cylinder on the undulating piston, thereby reducing the torsion on the spring skin. This prevents excessive relative rubbing of the inner and outer ply layers of the spring skin, which could lead to delamination defects. In turn, it ensures the airtightness of the air spring and prevents air leakage.

[0007] Preferably, the upper support assembly includes an inner frame and an outer frame. The outer wall of the inner frame is integrally vulcanized with the inner wall of the outer frame using vulcanized rubber, and the bearing is disposed on the inner wall of the inner frame.

[0008] Preferably, the inner wall of the inner frame is also provided with a slot, and a retaining ring for supporting the bearing is provided in the slot.

[0009] Preferably, the outer frame is provided with threaded holes.

[0010] Preferably, the vibration damping pad is a foam vibration damping pad.

[0011] Preferably, it also includes a sealing ring, which is sealed and fitted on the piston rod of the shock absorber, and the outer wall of the sealing ring is sealed and fitted with the upper housing of the air spring.

[0012] Preferably, the number of sealing rings is 2 sets.

[0013] Preferably, the present invention also provides an air spring, the air spring comprising the above-described air spring support assembly.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When the suspension deforms and torsions due to the up-and-down movement of the wheel, the piston rod on the shock absorber can rotate on the bearing to compensate for the torsion. This greatly reduces the torsion exerted by the cylinder on the undulating piston, thereby reducing the torsion on the bladder skin. This prevents excessive relative rubbing of the inner and outer ply layers of the bladder skin, which could lead to delamination defects. In turn, it ensures the airtightness of the air spring and prevents air leakage.

[0016] 2. The vibration damping pads reduce the vibrations caused by wheel bumps. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 A magnified view of A in the middle. Detailed Implementation

[0019] To facilitate understanding of the technical solution of this utility model by those skilled in the art, the technical solution of this utility model will now be further described in conjunction with the accompanying drawings.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0022] See Figure 1 and Figure 2This embodiment discloses a spring support assembly, including a shock absorber 1, an upper support assembly 2, a bearing 3, a locking nut 4, and a damping pad 5. The shock absorber 1 includes a cylinder 11 and a piston rod 12 that cooperates with the cylinder 11. The piston rod 12 extends out of the spring 6 and is connected to the upper support assembly 2 through the bearing 3 and locked by the locking nut 4. The damping pad 5 is sleeved on the upper housing 61 of the spring 6 to support the upper support assembly 2. In this embodiment, the damping pad 5 is a foam damping pad, which damps the vibration generated by wheel bumps.

[0023] The upper support assembly 2 includes an inner frame 21, an outer frame 22, and vulcanized rubber 23. The outer wall of the inner frame 21 is integrally vulcanized with the inner wall of the outer frame 22 through vulcanized rubber 23, and the bearing 3 is disposed on the inner wall of the inner frame 21. The vulcanized rubber 23 can adjust installation errors and reduce the vibration of the vehicle body caused by wheel sway.

[0024] The inner wall of the inner frame 21 is also provided with a slot, and a retaining ring 7 for supporting the bearing is provided in the slot. The outer ring of the bearing 3 is axially positioned by the retaining ring 4.

[0025] The outer frame 22 is provided with threaded holes (not marked in the figure), and is connected to the vehicle body by bolts passing through the threaded holes.

[0026] Furthermore, the air spring support assembly also includes a sealing ring 8. In this embodiment, there are two sets of sealing rings 8. The two sets of sealing rings 8 are sealed and fitted on the piston rod 12. The outer wall of the sealing ring 8 is sealed and fitted with the upper housing 61 of the air spring 6, thus sealing the air spring 6.

[0027] Specifically, the undulating piston 62 at the lower end of the air spring 6 is held tightly on the cylinder 11 of the shock absorber 1 by the anti-rotation block 63, forming an integral part with the shock absorber 1. When the suspension deforms and torsions due to the up-and-down movement of the wheel, the piston rod 12 on the shock absorber 1 can rotate on the bearing 3, thereby compensating for the torsion. This greatly reduces the torsion applied by the cylinder 11 to the undulating piston 62, thereby reducing the torsion on the bladder 64 and preventing excessive relative rubbing of the inner and outer ply layers of the bladder 64, which could lead to delamination defects. This ensures the airtightness of the air spring 6 and prevents air leakage.

[0028] Furthermore, this embodiment also provides an air spring, which includes the air spring support assembly described above.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] The above-described embodiments are merely examples of implementation methods of the utility model. The scope of protection of this utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model.

Claims

1. A spring strut assembly, characterized in that: It includes a shock absorber, an upper support assembly, a bearing, a lock nut, and a damping pad. The piston rod of the shock absorber extends out of the air spring and is connected to the upper support assembly through the bearing and locked by the lock nut. The damping pad is sleeved on the upper housing of the air spring to support the upper support assembly.

2. The air spring strut assembly according to claim 1, characterized in that: The upper support assembly includes an inner frame and an outer frame. The outer wall of the inner frame is integrally vulcanized with the inner wall of the outer frame using vulcanized rubber, and the bearing is located on the inner wall of the inner frame.

3. The air spring strut assembly according to claim 2, characterized in that: The inner wall of the inner frame is also provided with a slot, and a retaining ring is installed in the slot to support the bearing.

4. The air spring strut assembly according to claim 1, characterized in that: The outer frame is provided with threaded holes.

5. The air spring strut assembly according to claim 1, characterized in that: The vibration damping pad is a foamed vibration damping pad.

6. The air spring strut assembly according to claim 1, characterized in that: It also includes a sealing ring, which is fitted onto the piston rod of the shock absorber, and the outer wall of the sealing ring is in a sealed fit with the upper housing of the air spring.

7. The air spring strut assembly according to claim 6, characterized in that: There are 2 sets of sealing rings.

8. An air spring, characterized in that: The air spring includes the air spring strut assembly as described in any one of claims 1-7.

Images