Metal-inlaid supporting cover for air spring

Abstract

The utility model provides a metal-inlaid supporting cover for an air spring, which comprises a cover body, the cover body comprises a cover plate and a cover wall, the cover plate is fixed at the upper end of the cover wall, the lower end of the cover wall is open, an annular metal supporting sheet is embedded in the cover plate, and a through hole for a piston rod to penetrate through is formed in the center of the cover plate; salient points are uniformly arranged at the top end of the cover plate; the outer side face of the cover wall is provided with a strip-shaped protrusion, and the strip-shaped protrusion is arranged in the height direction of the cover wall. First reinforcing ribs are arranged on the inner side of the cover wall. According to the supporting cover, under the condition that the light weight is guaranteed, the impact strength is improved, the supporting cover is not prone to being broken, the service life of the bag skin is prolonged, the protruding points are arranged on the end face, abnormal sound caused by contact is prevented, and the comfort of a vehicle is improved.

Description

Technical Field

[0001] The utility model relates to a support cover for an air spring, in particular to a support cover for an air spring embedded with metal. Background Art

[0002] Currently, the support covers used in the market are made of all-plastic or all-metal materials. The plastic support cover has insufficient strength and is easy to break. The broken fragments may pierce the bladder skin, resulting in the failure of the air spring and vehicle faults. The metal support cover is too heavy and cannot meet the lightweight index requirements. In addition, abnormal noises are likely to occur at the top contact of the existing support cover, affecting the comfort of the vehicle. Summary of the Invention

[0003] In view of the above problems, the utility model provides a support cover for an air spring embedded with metal.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A support cover for an air spring embedded with metal, comprising a cover body, the cover body includes a cover plate and a cover wall, the cover plate is fixed at the upper end of the cover wall, the lower end of the cover wall is open, a ring-shaped metal support piece is embedded in the cover plate, and a through hole for a piston rod to pass through is provided at the center of the cover plate; convex points are evenly arranged at the top end of the cover plate;

[0006] A strip-shaped protrusion is arranged on the outer side surface of the cover wall, and the strip-shaped protrusion is arranged along the height direction of the cover wall; a first reinforcing rib is arranged on the inner side of the cover wall.

[0007] Further, the ring-shaped metal support piece is concentric with the cover plate, and the inner diameter of the ring-shaped metal support piece is larger than the diameter of the through hole.

[0008] Further, the convex point is a square convex platform or a circular convex platform that gradually narrows from the bottom to the top.

[0009] Further, the length of the strip-shaped protrusion is less than the height of the cover wall, one end of the strip-shaped protrusion is flush with the open end of the cover body, the other end of the strip-shaped protrusion is bullet-shaped, the cross-section of the strip-shaped protrusion is semi-circular, and both sides of the bottom of the strip-shaped protrusion are fixedly connected to the outer side surface of the cover wall through rounded corners.

[0010] Further, the through hole includes a straight hole section and an enlarged hole section, the enlarged hole section is connected to the lower end of the straight hole section, the diameter of the enlarged hole section gradually increases downward from the connection with the straight hole section, and a second reinforcing rib is arranged on the inner side wall of the hole passage of the enlarged hole section.

[0011] Furthermore, the second reinforcing rib is strip-shaped, extending from the top of the reamed section along the inner side wall of the hole to the bottom, and the second reinforcing ribs are arranged equidistantly around the circumference.

[0012] Furthermore, the upper end of the first reinforcing rib is connected to the cover plate, the lower end of the first reinforcing rib is flush with the lower end of the cover wall, and there are at least four first reinforcing ribs, which are arranged equidistantly along the circumference on the inner side surface of the cover wall.

[0013] Furthermore, the annular metal support sheet and the cover body are integrally injection-molded.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: (1) By inlaying an annular metal support sheet in the cover plate, the support strength of the cover body is ensured, the impact resistance is improved while ensuring light weight, it is not easy to break, and the service life of the bladder is increased. A through hole for the piston rod to pass through is provided at the center of the cover plate; convex points are evenly arranged at the top end of the cover plate; the end surface has convex points, which can prevent abnormal sounds caused by contact and improve the comfort of the vehicle. (2) By providing strip-shaped protrusions on the outer side wall of the cover body, and the length of the strip-shaped protrusions is less than the height of the cover wall, while ensuring better support strength of the present utility model, the use of shorter strip-shaped protrusions ensures light weight. The strip-shaped protrusions have bullet-shaped tops, which facilitate assembly and also facilitate air intake from the top, ensuring good air intake on the side. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of a support cover for an air spring with inlaid metal of the present utility model;

[0016] Figure 2 is a top view of a support cover for an air spring with inlaid metal of the present utility model;

[0017] Figure 3 is a sectional view taken along line A-A of a support cover for an air spring with inlaid metal of the present utility model;

[0018] Figure 4 is an assembly connection structural schematic diagram of a support cover for an air spring with inlaid metal of the present utility model. Detailed Description of the Embodiment

[0019] For a further understanding of the purpose, structure, features and functions of the present utility model, the following is a detailed description in conjunction with the embodiments.

[0020] Please refer to Figure 1 、 Figure 2 、 Figure 3, A support cover for an air spring inlaid with metal according to an embodiment of the present utility model includes a cover body 100. The cover body 100 includes a cover plate 110 and a cover wall 120. The cover plate 110 is fixed to the upper end of the cover wall 120. The lower end of the cover wall 120 is open. An annular metal support sheet 200 is embedded in the cover plate 110 to ensure the support strength of the cover body 100, improve the impact resistance under the condition of ensuring light weight, not easy to break, and improve the service life of the bladder. A through hole 130 for the piston rod to pass through is provided at the center of the cover plate 110; convex points 140 are uniformly arranged at the top end of the cover plate 110; with convex points 140 on the end face, it can prevent abnormal noise caused by contact and improve the comfort of the vehicle.

[0021] A strip-shaped protrusion 121 is provided on the outer side surface of the cover wall 120, and the strip-shaped protrusion 121 is arranged along the height direction of the cover wall 120; firstly, the external strip-shaped protrusion 121 can better play the role of assembly cooperation during piston assembly, facilitating assembly. Secondly, it enhances the structural strength of the cover wall, reduces deformation, and improves the service life of the present utility model. Finally, the strip-shaped protrusion 121 arranged along the height direction can also play the role of an air passage, facilitating air intake and avoiding hindering gas flow during the use of the piston. A first reinforcing rib 122 is provided on the inner side of the cover wall 120. Through the first reinforcing rib 122, the strength of the cover wall is improved, ensuring strong impact resistance of the cover body. At the same time, when a shock absorber is installed inside the cover body 100, it provides higher friction force to ensure the shock absorber is firmly installed and prevent rotation.

[0022] Such as Figure 4 , During installation, the piston rod 2 of the shock absorber 1 passes through the through hole 130, and a buffer block 3 is installed. The outer side wall of the shock absorber 1 is matched with the cover wall of the cover body 100 to install the shock absorber 1 inside the cover body 100, ensuring firm installation.

[0023] The annular metal support sheet 200 is concentric with the cover plate 110, and the inner diameter of the annular metal support sheet 200 is greater than the diameter of the through hole 130. Ensure that the annular metal support sheet 200 can support the cover plate and ensure uniform force.

[0024] The convex point 140 is a square convex platform or a circular convex platform that gradually shrinks from the bottom to the top. Ensure that the convex point 140 is more firmly connected to the cover body, prevent falling off, and at the same time reduce the contact area at the top end of the convex point 140, reduce the friction force, and thus reduce the noise generated by friction.

[0025] The length of the strip-shaped protrusion 121 is less than the height of the cover wall 120. The strip-shaped protrusion 121 is used in cooperation with the piston to reduce the lateral pressure generated by the piston during movement. One end of the strip-shaped protrusion 121 is flush with the open end of the cover body 100, which improves the structural strength of the product. While ensuring that the utility model has better support strength, the use of a shorter strip-shaped protrusion ensures lightweight. The other end of the strip-shaped protrusion 121 is bullet-shaped. The cross-section of the strip-shaped protrusion 121 is semi-circular. Both sides of the bottom of the strip-shaped protrusion 121 are connected and fixed to the outer side surface of the cover wall 120 through rounded corners. This ensures that the strip-shaped protrusion 121 is firmly installed. At the same time, the top of the bullet shape facilitates assembly and also allows air to flow in from the top, ensuring good air intake on the side.

[0026] The through hole 130 includes a straight hole section 131 and an enlarged hole section 132. The enlarged hole section 132 is connected to the lower end of the straight hole section 131. The diameter of the enlarged hole section 132 gradually increases downward from the connection with the straight hole section 131. The inner side wall of the hole passage of the enlarged hole section 132 is provided with a second reinforcing rib 133. This ensures the strength of the through hole 130. When the piston rod 2 is installed in the through hole 130, the through hole is not easily damaged, extending the service life. It can also further reduce the mass of the support cover through the through hole, ensuring the strength of the support cover while ensuring lightweight.

[0027] The second reinforcing rib 133 is strip-shaped. The second reinforcing rib 133 extends from the top of the enlarged hole section 132 along the inner side wall of the hole passage to the bottom of the enlarged hole section 132. The second reinforcing ribs 133 are arranged equidistantly around the circumference. This ensures that the second reinforcing rib 133 can achieve uniform stress and disperse stress. It ensures the support strength and improves the impact resistance.

[0028] The upper end of the first reinforcing rib 122 is connected to the cover plate 110. The lower end of the first reinforcing rib 122 is flush with the lower end of the cover wall 120. There are at least four first reinforcing ribs 122, which are arranged equidistantly along the circumference on the inner side surface of the cover wall 120. This ensures the support strength of the first reinforcing rib 122, realizes uniform stress, improves the impact resistance under the condition of ensuring lightweight, is not easily broken, and extends the service life of the piston.

[0029] The annular metal support sheet 200 and the cover body 100 are integrally injection-molded. The cover body 100 is made of plastic material, ensuring that the support cover is lightweight and meets the lightweight requirement. Through integral injection molding, the connection strength is high, which is convenient for manufacturing and production, and reduces the cost.

[0030] The present utility model has been described by the above related embodiments. However, the above embodiments are only examples for implementing the present utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the present utility model. On the contrary, modifications and refinements made without departing from the spirit and scope of the present utility model fall within the scope of patent protection of the present utility model.

Claims

1. A support cover for an air spring with inlaid metal, characterized in that: It includes a cover body, the cover body includes a cover plate and a cover wall, the cover plate is fixed at the upper end of the cover wall, the lower end of the cover wall is open, a ring-shaped metal support piece is embedded in the cover plate, and a through hole for the piston rod to pass through is provided at the center of the cover plate; bump points are evenly arranged at the top end of the cover plate; A strip-shaped protrusion is arranged on the outer side surface of the cover wall, and the strip-shaped protrusion is arranged along the height direction of the cover wall; a first reinforcing rib is arranged on the inner side of the cover wall.

2. The support cover for an air spring with inlaid metal according to claim 1, characterized in that: The ring-shaped metal support piece is concentric with the cover plate, and the inner diameter of the ring-shaped metal support piece is larger than the diameter of the through hole.

3. The support cover for an air spring with inlaid metal as claimed in claim 1, wherein: The bump point is a square boss or a circular boss that gradually narrows from the bottom to the top.

4. The support cover for an air spring with inlaid metal according to claim 1, characterized in that: The length of the strip-shaped protrusion is less than the height of the cover wall. One end of the strip-shaped protrusion is flush with the open end of the cover body, and the other end of the strip-shaped protrusion is bullet-shaped. The cross-section of the strip-shaped protrusion is semi-circular, and both sides of the bottom of the strip-shaped protrusion are connected and fixed to the outer side surface of the cover wall through rounded corners.

5. The support cover for an air spring with inlaid metal according to claim 1, characterized in that: The through hole includes a straight hole section and an enlarged hole section. The enlarged hole section is connected to the lower end of the straight hole section. The diameter of the enlarged hole section gradually increases downward from the connection with the straight hole section, and a second reinforcing rib is provided on the inner side wall of the hole passage of the enlarged hole section.

6. The support cover for an air spring with inlaid metal according to claim 5, characterized in that: The second reinforcing rib is strip-shaped, and the second reinforcing rib extends from the top of the enlarged hole section along the inner side wall of the hole passage to the bottom, and the second reinforcing ribs are arranged equidistantly around the circumference.

7. The support cover for an air spring with inlaid metal according to claim 1, characterized in that: The upper end of the first reinforcing rib is connected to the cover plate, and the lower end of the first reinforcing rib is flush with the lower end of the cover wall. There are at least four first reinforcing ribs, which are arranged equidistantly along the circumference on the inner side surface of the cover wall.

8. The support cover for an air spring with inlaid metal according to claim 1, characterized in that: The ring-shaped metal support piece and the cover body are integrally injection-molded.

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