Air spring support, air spring and vehicle

Abstract

The utility model discloses an air spring support seat, an air spring and a vehicle, the air spring support seat comprises an upper air chamber assembly, a lower air chamber assembly, an upper air chamber assembly and a lower air chamber assembly, the upper air chamber assembly is provided with a first accommodating cavity; the top rubber assembly comprises an elastic body, the elastic body is provided with a first flange, the elastic body comprises a first cavity and a second cavity which are separated by the first flange, and at least one groove is formed in the first flange; the top rubber assembly is arranged in the first containing cavity, the first flange is attached to the bottom wall of the first containing cavity, and the first cavity is communicated with the second cavity through the groove. According to the technical scheme, the elastic body can be prevented from moving in the radial direction, and therefore the durability of the top rubber assembly is improved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and in particular relates to an air spring support, an air spring and a vehicle. Background Art

[0002] In the prior art, because the elastic body is usually pressed tightly against the upper air chamber assembly to form a closed space, when the air spring is in the process of extension and retraction, the air pressure in the air spring cavity changes, which will cause the air pressure on both sides of the elastic body to be different, causing the elastic body to creep in the radial direction, thus adversely affecting the durability of the top rubber assembly. Utility Model Content

[0003] In order to solve the above problems, the embodiments of the present application provide an air spring support, an air spring and a vehicle.

[0004] According to a first aspect of an embodiment of the present application, there is provided an air spring support, comprising:

[0005] An upper air chamber assembly, wherein the upper air chamber assembly is provided with a first accommodating cavity;

[0006] A top rubber assembly, the top rubber assembly comprising an elastic body, the elastic body being provided with a first flange, the elastic body comprising a first cavity and a second cavity separated by the first flange, and the first flange being provided with at least one groove;

[0007] The top glue assembly is arranged in the first accommodating cavity, the first flange is in contact with the bottom wall of the first accommodating cavity, and the first cavity is connected with the second cavity through the groove.

[0008] Optionally, the air spring support further includes a first sealing ring, and the first sealing ring is arranged between the first accommodating cavity and the top rubber assembly.

[0009] Optionally, the top glue assembly further includes an outer frame and an inner frame, the elastomer is arranged between the outer frame and the inner frame, and the first flange protrudes from the outer frame and the inner frame.

[0010] Optionally, the outer frame is provided with at least one exhaust groove.

[0011] Optionally, the exhaust grooves correspond to the grooves one by one.

[0012] Optionally, the inner frame is provided with a mounting hole, and the mounting hole is used for mounting a shock absorber piston rod.

[0013] Optionally, the upper air chamber assembly includes a first shell and a second shell, the first shell is connected to the second shell, the top glue assembly is arranged on the first shell, and the material strength of the first shell is greater than the material strength of the second shell.

[0014] Optionally, the air spring support further includes a buffer body, the second shell includes a second accommodating cavity, the buffer body is disposed in the second accommodating cavity, and is fixed to a side of the bottom wall of the first accommodating cavity away from the top rubber assembly.

[0015] Optionally, the air spring support further includes a pressing piece, the elastic body further includes a second flange, and the pressing piece is disposed in the first accommodating cavity and fits with the second flange.

[0016] According to a second aspect of an embodiment of the present application, an air spring is provided, comprising the above-mentioned air spring support.

[0017] According to a third aspect of an embodiment of the present application, a vehicle is provided, comprising the above-mentioned air spring.

[0018] The technical effect of the embodiment of the present application is that a groove is provided on the first flange, and the groove connects the first cavity and the second cavity, so that the first cavity and the second cavity form a connecting air passage; when the first flange is in contact with the bottom wall of the first accommodating cavity, the first cavity and the second cavity can be connected through the groove, so that there is no pressure difference in the first cavity and the second cavity, avoiding radial movement of the elastomer, thereby improving the durability of the top rubber assembly.

[0019] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0021] Figure 1 It is a schematic diagram of the structure of the air spring support in the embodiment of the present application;

[0022] Figure 2 is a cross-sectional view of an air spring support in an embodiment of the present application;

[0023] Figure 3 is a cross-sectional view of an upper air chamber assembly in an embodiment of the present application;

[0024] Figure 4 It is a structural schematic diagram of the top glue assembly in the embodiment of the present application;

[0025] Figure 5 is a cross-sectional view of the top rubber assembly in the embodiment of the present application;

[0026] Figure 6 It is an exploded schematic diagram of the air spring in the embodiment of the present application;

[0027] Figure 7 It is a cross-sectional view of the air spring in the embodiment of the present application.

[0028] Explanation of the reference numerals in the accompanying drawings: air spring support 100; upper air chamber assembly 1; first shell 11; first accommodating cavity 111; bottom wall 111a; second shell 12; second accommodating cavity 121; top rubber assembly 2; outer frame 21; exhaust groove 211; inner frame 22; mounting hole 221; elastomer 23; first flange 231; groove 232; second flange 233; first cavity 234; second cavity 235; buffer body 3; clamping member 4; avoidance hole 41; first sealing ring 5; second sealing ring 6; fastening nut 7; connecting air duct 8; shock absorber 200; shock absorber piston rod 201; bladder 300; retaining ring 301; air spring 400. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0030] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0031] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0032] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0033] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0034] like Figure 1-Figure 5As shown, according to the first aspect of the embodiment of the present application, an air spring support 100 is provided, including an upper air chamber assembly 1 and a top glue assembly 2, the upper air chamber assembly 1 is provided with a first accommodating cavity 111; the top glue assembly 2 includes an elastomer 23, the elastomer 23 is provided with a first flange 231, the elastomer 23 includes a first cavity 234 and a second cavity 235 separated by the first flange 231, and the first flange 231 is provided with at least one groove 232; the top glue assembly 2 is provided in the first accommodating cavity 111, the first flange 231 is in contact with the bottom wall 111a of the first accommodating cavity 111, and the first cavity 234 is connected with the second cavity 235 through the groove 232.

[0035] The air spring support 100 is connected to the vehicle body and is used to provide support force for the air spring 400 .

[0036] like Figure 1 and Figure 2 As shown, the air spring support 100 includes an upper air chamber assembly 1 and a top rubber assembly 2. The top rubber assembly 2 includes an elastic body 23, and the elastic body 23 includes a first flange 231, a first cavity 234 and a second cavity 235 separated by the first flange 231, and a groove 232 is formed on the first flange 231; the upper air chamber assembly 1 is formed with a first accommodating cavity 111, and the top rubber assembly 2 is arranged inside the first accommodating cavity 111, and the first flange 231 is in contact with the bottom wall 111a of the first accommodating cavity 111, and the first cavity 234 is connected with the second cavity 235 through the groove 232.

[0037] In the prior art, when the air spring 400 is in the process of extension and retraction, the air pressure in the cavity of the air spring 400 changes. When the first flange 231 fits against the bottom wall 111a of the first accommodating cavity 111, the first cavity 234 becomes a closed space, which causes an air pressure difference between the first cavity 234 and the second cavity 235 of the elastomer 23, causing the second flange 233 of the elastomer 23 to creep in the radial direction, thereby adversely affecting the durability of the top rubber assembly 2.

[0038] To further illustrate, in this embodiment, a groove 232 is provided on the first flange 231, and the groove 232 connects the first cavity 234 and the second cavity 235, so that the first cavity 234 and the second cavity 235 form a connecting air channel 8; when the first flange 231 is in contact with the bottom wall 111a of the first accommodating cavity 111, the first cavity 234 and the second cavity 235 can be connected through the groove 232, so that there is no pressure difference in the first cavity 234 and the second cavity 235, thereby avoiding the radial movement of the elastomer 23, thereby improving the durability of the top rubber assembly 2.

[0039] Further explanation, the first flange 231 may be provided with one groove 232, two grooves 232, three grooves 232, or even more. Preferably, the first flange 231 is provided with two grooves 232, and the two grooves 232 are symmetrically arranged along the axis of the top glue assembly 2. The first flange 231 fits with the bottom wall 111a of the first accommodating cavity 111, so that the elastomer 23 can withstand a certain load, thereby improving the rigidity and reliability of the top glue assembly 2. If the number of grooves 232 is too large, the first flange 231 may not be able to withstand a certain load for the top glue assembly 2. If the number of grooves 232 is too small, the pressure difference between the first cavity 234 and the second cavity 235 cannot be quickly adjusted.

[0040] Preferably, there are two grooves 232 , which are symmetrically arranged along the axis of the elastic body 23 to form convection, so that the pressure difference between the first cavity 234 and the second cavity 235 can be quickly adjusted to prevent the elastic body 23 from moving in the radial direction.

[0041] In this embodiment, the air spring support 100 further includes a first sealing ring 5 , and the first sealing ring 5 is disposed between the first accommodating cavity 111 and the top rubber assembly 2 .

[0042] like Figure 2 As shown, the air spring support 100 also includes a first sealing ring 5, which is arranged between the first accommodating chamber 111 and the top glue assembly 2, so that an airtight structure is formed between the first accommodating chamber 111 and the top glue assembly 2 to prevent gas from leaking from the outer wall of the top glue assembly 2 and the inner wall of the first accommodating chamber 111.

[0043] It is further explained that the top rubber assembly 2 and the upper air chamber assembly 1 are sealed by the first sealing ring 5. Since the elastomer 23 is installed after the first accommodating chamber 111, the installation of the first flange 231 and the upper air chamber assembly 1 will produce a sealing effect. When the product is tested for air tightness using helium on the production line, in order to ensure the production rhythm, the limit fixture is not used, that is, the air spring 400 is in a free state. When the air spring 400 is filled with air pressure, the top rubber assembly 2 is pulled downward by the shock absorber piston rod 201, so that the extrusion pressure between the first flange 231 of the elastomer 23 and the bottom wall 111a of the first accommodating chamber 111 increases, and the contact area between the first flange 231 of the elastomer 23 and the bottom wall 111a of the first accommodating chamber 111 increases, thereby enhancing the airtight effect between the two. This phenomenon will lead to the first flange 231 of the elastomer 23 being in contact with the bottom wall 111a of the first accommodating chamber 111 during online testing. When the seal of the sealing ring 5 fails, the fit between the first flange 231 and the bottom wall 111a of the first accommodating chamber 111 produces a sealing effect at the front end of the first sealing ring 5, resulting in the failure to truly detect the seal between the top rubber assembly 2 and the upper air chamber assembly 1, that is, the airtight detection is invalid, resulting in a false seal phenomenon. When the air spring 400 is loaded on the vehicle, the tension of the shock absorber piston rod 201 is eliminated, and there is a deflection. During the wheel jumping process, the shock absorber piston rod 201 has an upward thrust on the top rubber assembly 2, and the seal formed between the first flange 231 of the elastic body 23 and the bottom wall 111a of the first accommodating chamber 111 may fail, and the airtight failure between the top rubber assembly 2 and the upper air chamber assembly 1 of the air spring 400 is exposed. After the groove 232 is opened, it is ensured that when the first sealing ring 5 fails, the gas can be discharged to the outside of the air spring 400 through the groove 232, which can be effectively detected through the helium airtight test on the production line to prevent defective products from flowing out and loading.

[0044] In this embodiment, the top rubber assembly 2 further includes an outer frame 21 and an inner frame 22 , the elastic body 23 is disposed between the outer frame 21 and the inner frame 22 , and the first flange 231 protrudes from the outer frame 21 and the inner frame 22 .

[0045] like Figure 4 and Figure 5 As shown, the top rubber assembly 2 also includes an inner frame 22 and an outer frame 21. The elastic body 23 is arranged between the inner frame 22 and the outer frame 21, and the elastic body 23 wraps the inner frame 22; the first flange 231 on the elastic body 23 protrudes from the lower end surface of the outer frame 21 and the lower end surface of the inner frame 22.

[0046] To further illustrate, the outer frame 21 and the inner wall of the first accommodating cavity 111 may be clearance fit, transition fit or interference fit.

[0047] To further illustrate, the first flange 231 protrudes from the lower end surface of the outer frame 21 and the lower end surface of the inner frame 22. When the top rubber assembly 2 is placed in the first accommodating cavity 111, the first flange 231 can fit with the bottom wall 111a of the first accommodating cavity 111, so that the elastomer 23 can withstand a certain load to improve the stiffness and reliability of the top rubber assembly 2.

[0048] It is further explained that the outer frame 21 and the inner frame 22 are made of metal material, so as to further improve the rigidity and reliability of the top rubber assembly 2.

[0049] In this embodiment, the outer frame 21 is provided with at least one exhaust slot 211 .

[0050] like Figure 4 and Figure 5 As shown, at least one exhaust groove 211 is provided on the exoskeleton 21, wherein the exhaust groove 211 is provided on the outer wall of the exoskeleton 21. Normally, the exoskeleton 21 and the first accommodating chamber 111 are interference fit, which may have a certain airtight effect, thereby affecting the misjudgment of a real leak. An exhaust groove 211 is provided on the outer wall of the exoskeleton 21. During detection, when the first sealing ring 5 fails, the gas can be discharged to the outside of the air spring 400 through the exhaust groove 211 without hindrance, which can ensure that the airtight test during detection is an effective detection and prevent defective products from flowing out and being loaded.

[0051] In this embodiment, the inner frame 22 is provided with a mounting hole 221 , and the mounting hole 221 is used for mounting the shock absorber piston rod 201 .

[0052] Further, the inner frame 22 is provided with a mounting hole 221, and the shock absorber piston rod 201 passes through the mounting hole 221 and is locked on the inner frame 22 by the fastening nut 7. A second sealing ring 6 is provided on the shock absorber piston rod 201, and the mounting hole 221 and the upper air chamber assembly 1 are airtight through the second sealing ring 6.

[0053] In this embodiment, the upper air chamber assembly 1 includes a first shell 11 and a second shell 12 , the first shell 11 is connected to the second shell 12 , the top glue assembly 2 is arranged on the first shell 11 , and the material strength of the first shell 11 is greater than the material strength of the second shell 12 .

[0054] like Figure 3 As shown, the upper air chamber assembly 1 includes a first shell 11 and a second shell 12, and the first shell 11 is connected to the second shell 12. The first accommodating cavity 111 is opened in the first shell 11, so the top glue assembly 2 is arranged in the first shell 11. The material strength of the first shell 11 is greater than the material strength of the second shell 12. The first shell 11 needs to provide structural strength for the top glue assembly 2.

[0055] In order to make the upper air chamber assembly 1 a lightweight structure, the first shell 11 is made of aluminum structural parts, the second shell 12 is made of plastic parts, and the first shell 11 and the second shell 12 are formed by embedded injection molding, which can ensure the structural strength of the upper air chamber assembly 1 and reduce the weight of the upper air chamber assembly 1.

[0056] In this embodiment, the air spring support 100 also includes a buffer body 3, the second shell 12 includes a second accommodating chamber 121, the buffer body 3 is arranged in the second accommodating chamber 121, and is fixed to the bottom wall 111a of the first accommodating chamber 111 away from the side of the top rubber assembly 2.

[0057] like Figure 2 and Figure 3 As shown, the second housing 12 defines a second accommodating chamber 121 , and the second accommodating chamber 121 is communicated with the first accommodating chamber 111 .

[0058] The buffer body 3 is disposed in the second accommodating chamber 121 and fixed on the bottom wall 111a of the first accommodating chamber 111. When the wheel jumps, the buffer body 3 acts as a limit buffer block, that is, when the air spring 400 is compressed to a certain position, the shock absorber 200 begins to contact the buffer body 3, and the buffer body 3 is compressed to provide a buffering effect for the shock absorber 200.

[0059] In this embodiment, the air spring support 100 further includes a pressing member 4 , and the elastic body 23 further includes a second flange 233 . The pressing member 4 is disposed in the first accommodating cavity 111 and fits with the second flange 233 .

[0060] like Figure 2 and 5 As shown, the elastic body 23 further includes a second flange 233, which is disposed on a side of the elastic body 23 away from the first flange 231. The air spring support 100 further includes a pressing member 4, which is disposed in the first accommodating cavity 111, fits with the second flange 233, and can press the top rubber assembly 2 in the first accommodating cavity 111, so as to prevent the top rubber assembly 2 from being separated from the first accommodating cavity 111.

[0061] Further, a evacuation hole 41 is provided in the middle of the pressing member 4, and the inner diameter of the evacuation hole 41 is larger than the outer diameter of the fastening nut 7 and smaller than the inner diameter of the second flange 233. When the shock absorber piston rod 201 moves upward, the pressing member 4 provides an evacuation space for the shock absorber piston rod 201, and the top rubber assembly 2 can be pressed into the first accommodating chamber 111 by the pressing member 4.

[0062] To further explain, the pressing member 4 and the first housing 11 may be connected by screws, threads, or clamping.

[0063] According to a second aspect of an embodiment of the present application, an air spring 400 is provided, comprising the above-mentioned air spring support 100 .

[0064] The air spring 400, whose main medium is air, has a main principle of filling air into a closed volume so that the pressure in the cavity is several times or dozens of times higher than the atmospheric pressure. The flipping motion of the bladder 300 on the piston is used to realize the change of volume, change the stiffness of the air spring 400, achieve the function of buffering the impact of the road surface, ensure the vehicle posture, increase or decrease the gas volume, realize the lifting or lowering of the vehicle, and meet different driving modes and working conditions.

[0065] like Figure 6 and Figure 7 As shown, the air spring 400 includes an air spring support 100, a shock absorber 200 and a bladder 300. The air spring 400 is arranged below the second housing 12, the first housing 11 is used to connect with the vehicle body, the shock absorber 200 is arranged below the second housing 12, and the shock absorber piston rod 201 passes through the mounting hole 221 of the inner frame 22 from bottom to top, and is locked on the inner frame 22 by the fastening nut 7, and a second sealing ring 6 is arranged between the shock absorber piston rod 201 and the inner frame 22 to achieve air tightness. The bladder 300 is connected to the upper air chamber assembly 1 through the buckling ring 301. Specifically, the bladder 300 is buckled on the outer wall of the second housing 12 by the buckling ring 301, so as to achieve the connection and sealing of the bladder 300 and the upper air chamber assembly 1 to complete the assembly.

[0066] According to a third aspect of an embodiment of the present application, a vehicle is provided, comprising the above-mentioned air spring 400.

[0067] The air spring 400 of this embodiment can be installed on various vehicles, including gasoline vehicles, diesel vehicles, sedans, trucks, buses, hybrid vehicles, pure electric vehicles, and the like.

[0068] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. An air spring support, characterized in that: include: An upper air chamber assembly, wherein the upper air chamber assembly is provided with a first accommodating cavity; A top rubber assembly, the top rubber assembly comprising an elastic body, the elastic body being provided with a first flange, the elastic body comprising a first cavity and a second cavity separated by the first flange, and the first flange being provided with at least one groove; The top glue assembly is arranged in the first accommodating cavity, the first flange is in contact with the bottom wall of the first accommodating cavity, and the first cavity is connected with the second cavity through the groove.

2. The air spring support according to claim 1, characterized in that: There are two grooves, and the two grooves are symmetrically arranged along the axis of the elastic body.

3. The air spring support according to claim 1, characterized in that: The air spring support also includes a first sealing ring, which is arranged between the first accommodating cavity and the top rubber assembly.

4. The air spring support according to claim 3, characterized in that: The top rubber assembly also includes an outer frame and an inner frame, the elastomer is arranged between the outer frame and the inner frame, and the first flange protrudes from the outer frame and the inner frame.

5. The air spring support according to claim 4, characterized in that: The outer frame is provided with at least one exhaust groove.

6. The air spring support according to claim 4, characterized in that: The inner frame is provided with a mounting hole, and the mounting hole is used for mounting the shock absorber piston rod.

7. The air spring support according to claim 1, characterized in that: The upper air chamber assembly includes a first shell and a second shell, the first shell is connected to the second shell, the top glue assembly is arranged on the first shell, and the material strength of the first shell is greater than the material strength of the second shell.

8. The air spring support according to claim 7, characterized in that: The air spring support further includes a buffer body, the second shell includes a second accommodating cavity, the buffer body is disposed in the second accommodating cavity, and is fixed to a side of the bottom wall of the first accommodating cavity away from the top rubber assembly.

9. The air spring support according to claim 1, characterized in that: The air spring support further includes a pressing piece, and the elastic body further includes a second flange. The pressing piece is arranged in the first accommodating cavity and fits with the second flange.

10. An air spring, characterized in that: The invention comprises the air spring support as described in any one of claims 1 to 9.

11. A vehicle, characterized in that: Includes the air spring as claimed in claim 10.

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