Air bag sealing structure with multiple sealing effects, shock absorber and vehicle

Abstract

The utility model provides an air bag sealing structure with multiple sealing effects, a shock absorber and a vehicle, and relates to the technical field of shock absorbers, the air bag sealing structure with the multiple sealing effects comprises an inner framework and a sealing block, the inner framework comprises two groups of annular frameworks, the two groups of annular frameworks are arranged inside and outside, and the sealing block is wrapped on the inner framework. The sealing block forms an inner buffer layer between the two groups of annular frameworks, a sealing layer is formed on the outer sides of the two groups of annular frameworks, and a plurality of protruding structures are arranged on the outer edge of the sealing layer. An inner framework and a sealing block are arranged to form an inner buffer layer and a sealing layer, so that parts are in an elastic rubber matching state, and good buffer and vibration absorption capabilities and an abnormal sound prevention function are achieved; the service life of a matching part is directly prolonged, the driving and riding comfort of an automobile is indirectly improved, meanwhile, the sealing layer is provided with a protruding structure and an inclined face structure, multiple contact faces are stressed and extruded to be in interference in the installation process, and therefore the multi-sealing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to an air bag sealing structure with multiple sealing effects, a shock absorber and a vehicle. Background Art

[0002] Air springs are light in weight and have excellent sound insulation and vibration absorption properties. The airbag height can be adjusted freely and conveniently to meet the needs of various road conditions and loads. Compared with traditional shock absorbers, they are more comfortable and are therefore increasingly favored by automobile manufacturers and car drivers and passengers.

[0003] Automobile shock-absorbing air springs are basically divided into two forms according to their sealing methods. One is directly used through the pressing ring, which directly replaces the traditional automobile shock absorber; the other is that after the pressing ring is pressed, it is matched with sealing rings, sealing gaskets and other sealing media and cooperates with the traditional shock absorber body to achieve the sealing effect.

[0004] Air springs have many advantages and are now increasingly popular in various passenger cars and commercial vehicles. However, one of the problems is the sealing problem. Because air springs are composed of multiple rubber parts, plastic parts, metal stamping parts, machined parts, etc., when they are subjected to high-intensity compression or strong impact during use, it is easier for the gas in the sealing cavity to leak out between the connected parts. In response to the above defects, this application is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an airbag sealing structure, a shock absorber and a vehicle with multiple sealing effects, which improves the original sealing structure and adds multiple sealings to the original single-channel sealing function, making the sealing safer and more reliable, and enabling the air spring to still have excellent sealing performance at the sealing part of the air spring under harsh use conditions.

[0006] In order to solve the above problems, the utility model provides an airbag sealing structure with multiple sealing effects, including an inner skeleton and a sealing block, the inner skeleton includes two groups of annular skeletons, the two groups of annular skeletons are arranged one inside and one outside, the sealing block is coated on the inner skeleton, the sealing block forms an inner buffer layer between the two groups of annular skeletons, and forms a sealing layer on the outside of the two groups of annular skeletons, and the outer edge of the sealing layer has a plurality of protruding structures.

[0007] According to an embodiment of the present invention, the sealing layers are all arranged obliquely.

[0008] According to an embodiment of the present invention, the protruding structure is a step-shaped structure or a wave-shaped structure.

[0009] According to an embodiment of the present invention, the diameter of the annular skeleton gradually decreases from one end to the other end.

[0010] According to an embodiment of the present invention, concave areas are provided on both sides of the inner buffer layer.

[0011] According to an embodiment of the utility model, the annular frame is made of metal material, and the sealing block is made of rubber material.

[0012] According to an embodiment of the present invention, the number of the annular skeletons is greater than two groups.

[0013] A shock absorber comprises a shock absorber body, an air spring assembly and the above-mentioned air bag sealing structure with multiple sealing effects. The air bag sealing structure with multiple sealing effects is installed between the piston of the air spring assembly and the shock absorber body.

[0014] According to an embodiment of the utility model, a swelling bag is arranged on the shock absorber body, and both the swelling bag and the piston are provided with inclined surfaces cooperating with the sealing layer.

[0015] A vehicle comprises the shock absorber mentioned above.

[0016] The beneficial effect of the utility model is that an inner buffer layer and a sealing layer are formed by arranging an inner skeleton and a sealing block, so that the parts are all in an elastic rubber matching state, have good buffering and vibration absorption capabilities, and prevent abnormal noise; directly improve the service life of its matching parts, and indirectly improve the driving and riding comfort of the car. At the same time, the sealing layer is provided with a convex structure and a slope structure. During installation, multiple contact surfaces are forced to squeeze and interfere, thereby forming a multiple sealing effect and improving the sealing performance of the product; the greater the pressure, the larger the sealing surface can be, and the better the sealing performance, which effectively improves the high pressure and strong impact resistance of the air spring top seat and directly improves the service life of the air spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of the shock absorber;

[0019] Figure 2 It is a structural schematic diagram of an airbag sealing structure with multiple sealing effects not installed on the shock absorber;

[0020] Figure 3 It is a partial enlarged schematic diagram of the shock absorber;

[0021] Figure 4 A schematic diagram of an airbag sealing structure with multiple sealing effects. DETAILED DESCRIPTION

[0022] The following description is only used to disclose the utility model so that those skilled in the art can implement the utility model. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate from the spirit and scope of the utility model.

[0023] An airbag sealing structure with multiple sealing effects, such as Figure 4 , including an inner skeleton and a sealing block 32. The inner skeleton includes two groups of annular skeletons 31. The two groups of annular skeletons 31 are nested one inside and one outside. The sealing block 32 is coated on the inner skeleton. The sealing block 32 forms an inner buffer layer 34 between the two groups of annular skeletons 31, and forms a sealing layer 33 on the outside of the two groups of annular skeletons 31. The outer edge of the sealing layer 33 has a plurality of protruding structures.

[0024] Specifically, the annular frame 31 is made of metal, and the sealing block 32 is made of rubber, natural rubber, which has strong wear resistance and can ensure air tightness. The high elasticity can ensure that the product has a certain cushioning property, and the high tear strength and elongation can ensure the stability and reliability of the parts. The process and structure combining metal and NR (natural rubber) are adopted. The inner frame is first processed, and then the inner frame and rubber vulcanization process are integrated to form multiple inner and outer sealing grooves for sealing between parts to ensure the sealing between assemblies.

[0025] Furthermore, in order to achieve a better sealing effect when the shock absorber is under stress, the sealing layer 33 is arranged at an angle, so that when the stress is applied, the inclined surface can squeeze the protruding structure to increase the sealing effect. The inclined surface can be formed by a rubber structure, or by a rubber structure in combination with an annular frame 31. In this embodiment, the diameter of the annular frame 31 gradually decreases from one end to the other, and cooperates with the rubber to form an inclined surface.

[0026] The protruding structure is a step-shaped structure or a wave-shaped structure. In this embodiment, a step-shaped structure is adopted.

[0027] The inner and outer annular frames 31 are staggered to ensure the sealing contact area while avoiding the overall structure height being too high. The inner annular frame 31 has an elbow structure to increase the contact area and bonding force with the rubber.

[0028] Preferably, concave areas 35 are provided on both sides of the inner buffer layer 34 , so that the inner buffer layer 34 can have a better buffering effect when the annular frame 31 is under pressure.

[0029] Optionally, the number of the annular skeletons 31 is greater than two groups, such as 3-4 groups.

[0030] A shock absorber, such as Figure 1 , Figure 2 , including a shock absorber body 1, an air spring assembly 2 and the above-mentioned airbag sealing structure 3 with multiple sealing effects. The shock absorber body 1 passes through the through hole in the airbag sealing structure 3 with multiple sealing effects, and the airbag sealing structure 3 with multiple sealing effects is installed between the piston 21 of the air spring assembly 2 and the shock absorber body 1.

[0031] like Figure 2 , Figure 3 A swelling bag 11 is arranged on the outer cylinder of the shock absorber body 1, and the swelling bag 11 has an inclined surface. The end of the piston 21 has an inclined surface. The two inclined surfaces can be arranged in parallel. The inner ring sealing layer 33 and the outer ring sealing layer 33 are respectively fitted with the swelling bag 11 and the piston 21 by interference. The inclined surface not only realizes the limiting effect, but also makes the sealing structure more reliable by changing the force surface. The greater the pressure, the larger the sealing surface and the better the sealing performance. The air spring effectively improves the ability to resist high pressure and strong impact at the top seat, and directly improves the service life of the air spring.

[0032] The airbag sealing structure 3 with multiple sealing effects needs to be installed by extruding rubber interference fit, and the parts are all in an elastic rubber matching state, which has good buffering and vibration absorption capabilities and the function of preventing abnormal noise; it directly improves the service life of its matching parts and indirectly improves the driving and riding comfort of the car.

[0033] A vehicle comprises the above-mentioned shock absorber.

[0034] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed and modified in any way.

Claims

1. An airbag sealing structure with multiple sealing effects, characterized in that: The invention comprises an inner frame and a sealing block (32), wherein the inner frame comprises two groups of annular frames (31), the two groups of annular frames (31) are arranged one inside and one outside, the sealing block (32) is coated on the inner frame, the sealing block (32) forms an inner buffer layer (34) between the two groups of annular frames (31), and forms a sealing layer (33) on the outside of the two groups of annular frames (31), and the outer edge of the sealing layer (33) has a plurality of protruding structures.

2. The airbag sealing structure with multiple sealing effects according to claim 1, characterized in that: The sealing layers (33) are all arranged obliquely.

3. The airbag sealing structure with multiple sealing effects according to claim 1 or 2, characterized in that: The protrusion structure is a step-shaped structure or a wave-shaped structure.

4. The airbag sealing structure with multiple sealing effects according to claim 2, characterized in that: The diameter of the annular skeleton (31) gradually decreases from one end to the other end.

5. The airbag sealing structure with multiple sealing effects according to claim 1, characterized in that: Concave areas (35) are provided on both sides of the inner buffer layer (34).

6. The airbag sealing structure with multiple sealing effects according to claim 1, characterized in that: The annular frame (31) is made of metal, and the sealing block (32) is made of rubber.

7. The airbag sealing structure with multiple sealing effects according to claim 1, characterized in that: The number of the annular skeletons (31) is greater than two groups.

8. A shock absorber, characterized in that: It comprises a shock absorber body (1), an air spring assembly (2) and an airbag sealing structure (3) with multiple sealing effects as described in any one of claims 1 to 7, wherein the airbag sealing structure (3) with multiple sealing effects is installed between the piston (21) of the air spring assembly (2) and the shock absorber body (1).

9. The shock absorber according to claim 8, characterized in that: The shock absorber body (1) is provided with an expansion bag (11), and both the expansion bag (11) and the piston (21) are provided with inclined surfaces that cooperate with the sealing layer (33).

10. A vehicle, characterized in that: The vehicle comprises the shock absorber according to any one of claims 8-9.

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