Piston for air spring, air spring and vehicle
By designing a detachable air spring piston, the size of the piston is adjusted by replacing different second and third bodies, the problems of long adjustment cycle and high cost are solved, and efficient adjustment and material savings are achieved.
Patent Information
- Application Number
- CN202421012268.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-10
AI Technical Summary
During the adjustment of vehicle air springs, a large number of pistons of different structural sizes are required, resulting in a long adjustment cycle and waste of molds and materials, increasing costs.
Design a piston for air springs, by replacing different second and third bodies, changing the inner and outer diameters of the pistons, thereby achieving efficient adjustment of the stiffness of the air spring, shortening the adjustment cycle, and saving molds and materials .
The stiffness of the air spring is efficiently adjusted, which shortens the adjustment cycle, reduces costs, and improves material utilization.
Smart Images
Figure CN222163365U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of vehicles, in particular to a piston for an air spring, an air spring and a vehicle. Background Art
[0002] In the related art, during the product development process of vehicle air springs, a large number of pistons of different structural sizes are required to adjust the stiffness of the air springs, which requires the production of a large number of adjustment pistons, resulting in a long adjustment cycle. Moreover, the production of a large number of adjustment piston samples will cause mold waste and material waste, resulting in high adjustment costs. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a piston for an air spring, which can efficiently adjust the stiffness of the air spring, which is conducive to shortening the adjustment cycle and reducing the adjustment cost.
[0004] The utility model further provides an air spring.
[0005] The utility model further provides a vehicle.
[0006] According to the utility model, the piston for the air spring includes: a first body; the first body defines an installation space; a second body, the second body is arranged in the installation space and defines a volume cavity, and the volume cavity is suitable for communicating with the airbag of the air spring; a third body, the third body is sleeved on the outside of the first body and is detachably connected to the first body.
[0007] According to the piston for the air spring of the utility model, the inner diameter of the piston can be changed by changing the volume of the volume cavity of the second body, and the outer diameter of the piston can be changed by changing the outer diameter of the third body. Therefore, the inner diameter of the piston can be changed by replacing different second bodies, and the outer diameter of the piston can be changed by replacing different third bodies. The stiffness of the air spring can be efficiently adjusted, which is beneficial to shortening the adjustment cycle, and can save molds and materials, which is beneficial to reducing the adjustment cost.
[0008] In some examples of the present invention, the inner wall of the first body has a first limiting boss protruding toward the installation space, and one end of the second body abuts against the first limiting boss.
[0009] In some examples of the present invention, the outer wall of the first body has a second limiting boss protruding toward the radial outside, and one end of the third body abuts against the second limiting boss.
[0010] In some examples of the present invention, the third body includes: a first sub-body and a second sub-body, and at least one reinforcing rib is disposed on a side of the first sub-body and the second sub-body facing the first body.
[0011] In some examples of the present invention, the piston for the air spring also includes: a cover body, the volume chamber has a first open end and a second open end relative to each other, the second open end is suitable for communicating with the airbag, and the cover body is fixed to one end of the first body and is used to seal the first open end.
[0012] In some examples of the present invention, along the axial direction of the piston, the outer diameter of at least a portion of the third body gradually decreases.
[0013] In some examples of the present invention, at least a portion of the outer wall surface of the third body is configured as an arc surface convex toward the radial outside.
[0014] In some examples of the present invention, at least a portion of the outer wall surface of the third body is configured as an arc surface that is concave toward the radial inside.
[0015] The air spring according to the utility model comprises the above-mentioned piston for the air spring, a mounting seat and an air bag, one end of the air bag is connected to the mounting seat, and the other end of the air bag is connected to the piston.
[0016] The vehicle according to the utility model comprises the above-mentioned air spring.
[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 is a cross-sectional view of an air spring according to an embodiment of the utility model;
[0020] Figure 2 is a schematic diagram of a piston according to an embodiment of the utility model;
[0021] Figure 3 is an explosion schematic diagram of a piston according to an embodiment of the utility model;
[0022] Figure 4 is a cross-sectional view of a piston according to an embodiment of the utility model;
[0023] Figure 5is a cross-sectional view of the second body according to an embodiment of the utility model;
[0024] Figure 6 and Figure 7 is a schematic diagram of a third body according to an embodiment of the utility model (the outer wall surface does not have a curved surface);
[0025] Figure 8 and Fig. 9 is a schematic diagram of a third body according to an embodiment of the utility model (the outer wall surface has a curved surface convex toward the radial outside);
[0026] Fig.10 and Fig.11 It is a schematic diagram of the third body according to an embodiment of the present utility model (the outer wall surface has an arc surface recessed toward the radial inside).
[0027] Reference numerals:
[0028] Air spring 100;
[0029] Piston 10; first body 1; first limiting boss 11; second limiting boss 12; installation space 13; tooth-shaped structure 14; groove 15;
[0030] Second body 2; volume cavity 21; first open end 211; second open end 212;
[0031] The third body 3; the first sub-body 31; the second sub-body 32; the reinforcing rib 33;
[0032] Mounting seat 20; air bag 30; reinforcement ring 40;
[0033] Cover body 50; air nozzle interface 51; bolt 52; sealing ring 60; upper buckle ring 70; lower buckle ring 80. DETAILED DESCRIPTION
[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0035] Reference below Figure 1-Figure 11 A piston 10 for an air spring 100 according to an embodiment of the present invention is described.
[0036] like Figure 1-Figure 4As shown, the piston 10 for the air spring 100 according to the embodiment of the utility model comprises: a first body 1, a second body 2, and a third body 3. The first body 1 defines an installation space 13; the second body 2 is disposed in the installation space 13 and defines a volume cavity 21, and the volume cavity 21 is suitable for communicating with the air bag 30 of the air spring 100; the third body 3 is sleeved on the outside of the first body 1 and is detachably connected to the first body 1.
[0037] The first body 1 defines an installation space 13, the second body 2 is disposed in the installation space 13 of the first body 1, and the second body 2 can be taken out of the installation space 13. The second body 2 defines a volume cavity 21, and the volume cavity 21 is arranged through the second body 2 along the axial direction of the second body 2, and the volume cavity 21 is suitable for communicating with the airbag 30 of the air spring 100.
[0038] The third body 3 is detachably connected to the first body 1 . Specifically, the third body 3 can be sleeved on the outside of the first body 1 and detachably connected to the first body 1 . The third body 3 and the first body 1 can be clearance fit or transition fit.
[0039] It should be noted that the volume of the volume cavity 21 of the second body 2 can be changed by changing the inner diameter of the volume cavity 21 of the second body 2 to change the volume of the volume cavity 21 of the second body 2, so as to change the volume of the air spring 100, so as to achieve a wide range of adjustment of the stiffness of the air spring 100. As some embodiments of the present application, before the adjustment of the air spring 100 begins, the second body 2 with different volumes of the volume cavity 21 can be designed according to the target range of the stiffness performance of the air spring 100 to achieve a wide range of adjustment of the stiffness of the air spring 100.
[0040] Moreover, in this way, the outer diameter of the third body 3 can be changed to change the outer diameter of the piston 10, so as to achieve a small range of stiffness adjustment of the air spring 100. As some embodiments of the present application, the third body 3 with different outer diameters can be designed according to the target range of the stiffness performance of the air spring 100. It can be understood that by changing the outer contour of the third body 3, the outer diameter of the third body 3 can be changed, and the small range of stiffness adjustment of the air spring 100 can be achieved. Moreover, by using the piston 10 proposed in the present application, the accuracy of the stiffness measurement result of the air spring 100 can be improved, and other components of the air spring 100 (such as the airbag 30) will not be damaged.
[0041] As some embodiments of the present application, the material of the first body 1 may be aluminum alloy. Such a configuration can reduce the weight of the air spring 100 .
[0042] As some embodiments of the present application, the second body 2 and the third body 3 are made of nylon material. Nylon material has high elastic recovery rate and high fatigue resistance, which is convenient for disassembly, assembly and adjustment of the air spring 100 and can also reduce the weight of the air spring 100.
[0043] As some embodiments of the present application, Figure 5 As shown, the inner hole diameter of the volume cavity 21 of the second body 2 can be A, and the adjustment range of A can be 5mm-80mm, that is, the inner hole diameter of the volume cavity 21 can be any value between 5mm-80mm.
[0044] As some embodiments of the present application, Figure 1 As shown, the air spring 100 includes a piston 10, a mounting seat 20 and an airbag 30. The airbag 30 has two opposite ends, one end of which is connected to the piston 10 and the other end is connected to the mounting seat 20. In addition, the airbag 30 is connected to the volume chamber 21 of the second body 2.
[0045] As some embodiments of the present application, Figure 4 As shown, a reinforcement ring 40 may be provided at one end of the first body 1 close to the airbag 30 . The material of the reinforcement ring 40 may be carbon steel. This arrangement can reduce the probability of damage when the piston 10 and the airbag 30 are assembled and buckled.
[0046] As some embodiments of the present application, Figure 4 As shown, the outer contour of one end of the first body 1 close to the airbag 30 has a tooth-shaped structure 14, and the tooth-shaped structure 14 can be constructed as a plurality of annular protrusions arranged at intervals along the axial direction of the first body 1. By making the outer contour of one end of the first body 1 close to the airbag 30 have a tooth-shaped structure 14, the connection firmness between the piston 10 and the airbag 30 can be improved.
[0047] Therefore, the piston 10 of the air spring 100 of the present application can change the inner diameter of the piston 10 by changing the volume of the volume chamber 21 of the second body 2, and can change the outer diameter of the piston 10 by changing the outer diameter of the third body 3. Therefore, the inner diameter of the piston 10 can be changed by replacing different second bodies 2, and the outer diameter of the piston 10 can be changed by replacing different third bodies 3. The stiffness of the air spring 100 can be efficiently adjusted, which is beneficial to shortening the adjustment cycle, and can save molds and materials, which is beneficial to reducing the adjustment cost.
[0048] In some embodiments of the present invention, Figure 4 As shown, the inner wall of the first body 1 has a first limiting boss 11 protruding toward the installation space 13 , and one end of the second body 2 abuts against the first limiting boss 11 .
[0049] The first body 1 defines an installation space 13, and the installation space 13 can be arranged through the first body 1 along the axial direction of the first body 1, that is, along the axial direction of the first body 1, both ends of the installation space 13 are open ends, and the inner wall of the first body 1 has a first limiting boss 11, and the first limiting boss 11 is protruded toward the installation space 13. As some embodiments of the present application, the first limiting boss 11 can be an annular boss, and the first limiting boss 11 is located at one end of the first body 1 close to the airbag 30.
[0050] The second body 2 is detachably arranged in the installation space 13. As some embodiments of the present application, the second body 2 can enter the installation space 13 of the first body 1 from an end of the first body 1 relatively far away from the airbag 30, and the first limiting boss 11 can be limitedly abutted with the end of the second body 2 to prevent the second body 2 from detaching from the installation space 13 from an end of the first body 1 relatively close to the airbag 30.
[0051] As some embodiments of the present application, the first limiting boss 11 can be connected to the first body 1 by welding. As some embodiments of the present application, the first limiting boss 11 is integrally formed with the first body 1, that is, the first limiting boss 11 and the first body 1 are an integrally formed part, and the integrally formed part has high structural strength. Such a setting can reduce the probability of the first limiting boss 11 being separated from the first body 1.
[0052] By providing the inner wall of the first body 1 with a first limiting boss 11 protruding toward the installation space 13, one end of the second body 2 can be brought into contact with the first limiting boss 11 to prevent the second body 2 from being separated from the installation space 13 from the end of the first body 1 relatively close to the airbag 30. In addition, the second body 2 can be easily replaced, which is beneficial to improving the replacement rate of the second body 2 and shortening the adjustment cycle.
[0053] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the outer wall of the first body 1 has a second limiting boss 12 protruding toward the radial outside, and one end of the third body 3 abuts against the second limiting boss 12 .
[0054] Among them, a second limiting boss 12 is provided on the outer wall of the first body 1, and the second limiting boss 12 protrudes toward the outer side of the first body 1 along the radial direction of the first body 1. The third body 3 is sleeved on the outer side of the first body 1, and the third body 3 is detachably connected to the first body 1. When the third body 3 is sleeved on the outer side of the first body 1, one end of the third body 3 (the end of the third body 3 relatively close to the airbag 30) can be limitedly abutted with the second limiting boss 12 of the first body 1, and the second limiting boss 12 can axially limit the third body 3 so that the third body 3 and the first body 1 are securely matched.
[0055] As some embodiments of the present application, the second limiting boss 12 and the outer wall of the first body 1 can be connected by welding.
[0056] As some embodiments of the present application, the second limiting boss 12 is integrally formed with the first body 1, that is, the second limiting boss 12 and the first body 1 are an integrally formed part, and the integrally formed part has high structural strength. Such a setting can reduce the probability of the second limiting boss 12 separating from the first body 1.
[0057] By providing the outer wall of the first body 1 with a second limiting boss 12 protruding outward in the radial direction, one end of the third body 3 can be abutted against the second limiting boss 12, and the second limiting boss 12 can axially limit the third body 3 to ensure a secure fit between the third body 3 and the first body 1.
[0058] In some embodiments of the present invention, Figure 3 As shown, the third body 3 includes: a first sub-body 31 and a second sub-body 32 , and at least one reinforcing rib 33 is disposed on one side of the first sub-body 31 and the second sub-body 32 facing the first body 1 .
[0059] The third body 3 may be a split structure. Specifically, the third body 3 includes a first sub-body 31 and a second sub-body 32 . The inner side of the first sub-body 31 and the inner side of the second sub-body 32 are both provided with at least one reinforcing rib 33 .
[0060] As some embodiments of the present application, the first sub-body 31 may be provided with one reinforcing rib 33 , or the first sub-body 31 may be provided with multiple reinforcing ribs 33 , and the second sub-body 32 may be provided with one reinforcing rib 33 , or the second sub-body 32 may be provided with multiple reinforcing ribs 33 .
[0061] As some embodiments of the present application, the reinforcing ribs 33 of the first sub-body 31 and the second sub-body 32 are both extended along the circumference of the third body 3 and protrude toward the first body 1 .
[0062] As some embodiments of the present application, the reinforcing ribs 33 of the first sub-body 31 and the second sub-body 32 are both extended along the axial direction of the third body 3 and protrude toward the first body 1 .
[0063] As some embodiments of the present application, the reinforcing ribs 33 of the first sub-body 31 extend along the axial direction of the third body 3 and protrude toward the first body 1, and the reinforcing ribs 33 of the second sub-body 32 extend along the circumferential direction of the third body 3 and protrude toward the first body 1.
[0064] As some embodiments of the present application, the reinforcing ribs 33 of the first sub-body 31 extend along the circumferential direction of the third body 3 and protrude toward the first body 1, and the reinforcing ribs 33 of the second sub-body 32 extend along the axial direction of the third body 3 and protrude toward the first body 1.
[0065] As some embodiments of the present application, the first sub-body 31 and the second sub-body 32 both have multiple reinforcing ribs 33 , the reinforcing ribs 33 of the first sub-body 31 and the second sub-body 32 are both constructed as arc-shaped reinforcing ribs, and the reinforcing ribs 33 of the first sub-body 31 and the second sub-body 32 are both spaced apart along the axial direction of the third body 3 .
[0066] By making the third body 3 include the first sub-body 31 and the second sub-body 32, the third body 3 can be easily disassembled and assembled, which is beneficial to improving the replacement rate of the third body 3. By making the first sub-body 31 and the second sub-body 32 both provided with at least one reinforcing rib 33, the third body 3 can have a higher structural strength, thereby improving the structural strength of the third body 3 on the basis of adopting lightweight materials, and taking into account both the lightweight design and structural strength of the third body 3.
[0067] In some embodiments of the present invention, Figure 2-Figure 4 As shown, the piston 10 for the air spring 100 also includes: a cover body 50, the volume chamber 21 has a first open end 211 and a second open end 212 opposite to each other, the second open end 212 is suitable for communicating with the airbag 30, and the cover body 50 is fixed to one end of the first body 1 and is used to seal the first open end 211.
[0068] The second body 2 has a volume cavity 21. Along the axial direction of the second body 2, the volume cavity 21 penetrates the second body 2 and has two opposite ends. The end away from the airbag 30 is a first open end 211, and the end close to the airbag 30 is a second open end 212. The second open end 212 is suitable for communicating with the airbag 30. The first open end 211 can be closed by the cover 50. Specifically, the cover 50 can be fixedly arranged at the end of the first body 1 away from the airbag 30, and can seal the first open end 211 of the volume cavity 21. The cover 50 is detachably connected to the first body 1. As some embodiments of the present application, the cover 50 and the first body can be connected by bolts 52. As some embodiments of the present application, during the adjustment process, the second body 2 can be quickly replaced by removing the bolts 52 to remove the cover 50.
[0069] As some embodiments of the present application, the cover 50 may be made of aluminum alloy. This configuration can reduce the weight of the air spring 100.
[0070] As some embodiments of the present application, Figure 2-Figure 4As shown, the cover body 50 is provided with an air nozzle interface 51 , and the air nozzle interface 51 can be used to install the air joint of the air spring 100 , so that the air source can enter the air spring 100 .
[0071] As some embodiments of the present application, a groove 15 may be provided at one end of the first body 1 facing the cover body 50, and the groove 15 may be constructed as a U-shaped groove. Part of the structure of the sealing ring 60 may be provided in the groove 15 to achieve gas sealing between the cover body 50 and the first body 1 to avoid air leakage during the use of the piston 10.
[0072] Such an arrangement enables the first open end 211 of the volume chamber 21 to be sealed by the cover body 50 , so as to achieve gas sealing of the air spring 100 .
[0073] In some embodiments of the present invention, Figure 6 and Figure 7 As shown, along the axial direction of the piston 10 , the outer diameter of at least part of the third body 3 gradually decreases.
[0074] During use, at least part of the third body 3 is covered by the airbag 30 of the air spring 100. The outer contour of the third body 3 can be changed to change the outer diameter of the third body 3, so as to achieve a small range of stiffness adjustment of the air spring 100.
[0075] Along the axial direction of the piston 10 , the outer diameter of at least part of the third body 3 gradually decreases. Specifically, along the axial direction of the piston 10 , the outer diameter of part of the third body 3 gradually decreases, or, along the axial direction of the piston 10 , the outer diameter of the third body 3 gradually decreases.
[0076] As some embodiments of the present application, Figure 6 As shown, along the axial direction of the piston 10, and from the end of the third body 3 away from the airbag 30 to the end of the third body 3 close to the airbag 30 (ie, as shown in FIG. Figure 6 As shown, from the upper end to the lower end), the outer diameter of at least part of the third body 3 gradually decreases.
[0077] As some embodiments of the present application, Figure 7 As shown, along the axial direction of the piston 10, and from one end of the third body 3 close to the airbag 30 to the end of the third body 3 away from the airbag 30 (ie, as shown in FIG. Figure 7 As shown, from the lower end to the upper end), the outer diameter of at least part of the third body 3 gradually decreases.
[0078] As some embodiments of the present application, along the axial direction of the piston 10, the angle between the outer wall profile of the third body 3 and the axis of the third body 3 is any value between negative 15° and 15°.
[0079] Such an arrangement enables the outer contour of the third body 3 to have a variety of structural forms, which is conducive to realizing a variety of changes and adjustments in the stiffness of the air spring 100 to meet actual production requirements.
[0080] In some embodiments of the present invention, Figure 8 and Fig. 9 As shown, at least a portion of the outer wall surface of the third body 3 is configured as an arc surface convex toward the radial outside.
[0081] As some embodiments of the present application, the outer wall surface of the third body 3 can be constructed as an arc surface convex toward the radial outside, or the outer wall surface of part of the third body 3 can be constructed as an arc surface convex toward the radial outside.
[0082] As some embodiments of the present application, along the axial direction of the piston 10, and from one end of the third body 3 away from the airbag 30 to the end of the third body 3 close to the airbag 30, the outer diameter of at least part of the third body 3 gradually decreases, and part of the outer wall surface is constructed as an arc surface convex toward the radial outside.
[0083] As some embodiments of the present application, Figure 8 As shown, along the axial direction of the piston 10, and from one end of the third body 3 close to the airbag 30 to the end of the third body 3 away from the airbag 30 (ie, as shown in FIG. Figure 8 As shown, from the lower end to the upper end), the outer diameter of at least part of the third body 3 gradually decreases, and part of the outer wall surface is constructed as an arc surface convex toward the radial outside.
[0084] As some embodiments of the present application, the radius of curvature of the arc surface of the third body 3 protruding toward the radial outside can be any value between 50 mm and 300 mm.
[0085] Such an arrangement enables the outer contour of the third body 3 to have a variety of structural forms, which is conducive to realizing a variety of changes and adjustments in the stiffness of the air spring 100 to meet actual production requirements.
[0086] In some embodiments of the present invention, Fig.10 and Fig.11 As shown, at least a portion of the outer wall surface of the third body 3 is configured as an arc surface that is concave toward the radial inside.
[0087] As some embodiments of the present application, the outer wall surface of the third body 3 can be constructed as an arc surface recessed toward the radial inside, or the outer wall surface of part of the third body 3 can be constructed as an arc surface recessed toward the radial inside.
[0088] As some embodiments of the present application, Fig.11 As shown, along the axial direction of the piston 10, and from the end of the third body 3 away from the airbag 30 to the end of the third body 3 close to the airbag 30 (ie, as shown in FIG. Fig.11 As shown, from the upper end to the lower end), the outer diameter of at least part of the third body 3 gradually decreases, and part of the outer wall surface is constructed as an arc surface recessed toward the radial inner side.
[0089] As some embodiments of the present application, along the axial direction of the piston 10, and from one end of the third body 3 close to the airbag 30 to the end of the third body 3 away from the airbag 30, the outer diameter of at least part of the third body 3 gradually decreases, and part of the outer wall surface is constructed as an arc surface that is recessed toward the radial inner side.
[0090] As some embodiments of the present application, the radius of curvature of the arc surface of the third body 3 that is recessed radially inward may be any value between 50 mm and 300 mm.
[0091] Such an arrangement enables the outer contour of the third body 3 to have a variety of structural forms, which is conducive to realizing a variety of variable adjustments of the stiffness of the air spring 100 to meet actual production requirements.
[0092] The air spring 100 according to the embodiment of the utility model includes the piston 10 for the air spring 100 of the above embodiment, and also includes: a mounting seat 20 and an airbag 30, one end of the airbag 30 is connected to the mounting seat 20, and the other end of the airbag 30 is connected to the piston 10.
[0093] like Figure 1 As shown, the air spring 100 includes a piston 10, a mounting seat 20 and an airbag 30. The airbag 30 has two opposite ends, one end of which is connected to the piston 10 and the other end is connected to the mounting seat 20. The volume chamber 21 of the second body 2 of the piston 10 is connected to the airbag 30 of the air spring 100.
[0094] Among them, the installation space 13 is set through the first body 1 along the axial direction of the piston 10, the second body 2 is set in the installation space 13, the volume chamber 21 is set through the second body 2 along the axial direction of the piston 10, the airbag 30 has a cavity that passes through it along the axial direction of the piston 10, the mounting seat 20 is set at the end of the airbag 30 away from the piston 10 and closes one end of the cavity of the airbag 30, the piston 10 is set at the end of the airbag 30 away from the mounting seat 20 and is connected to the cavity of the airbag 30, the cover body of the piston 10 is located at the end of the piston 10 away from the airbag 30 and closes the end of the volume chamber 21 away from the airbag 30, so that a closed space (volume chamber 21 plus airbag 30) can be formed in the air spring 100, and the closed space is connected to the air source through the air nozzle interface 51 of the cover body 50.
[0095] As some embodiments of the present application, the air spring 100 further includes an upper buckle ring 70 and a lower buckle ring 80, the piston 10 and the airbag 30 are connected via the upper buckle ring 70, and the mounting seat 20 and the airbag 30 are connected via the lower buckle ring 80. This arrangement can reliably connect the piston 10, the mounting seat 20 and the airbag 30 together.
[0096] According to the air spring 100 of the embodiment of the utility model, including the piston 10 for the air spring 100 of the above-mentioned embodiment, the inner diameter of the piston 10 can be changed by changing the volume of the volume cavity 21 of the second body 2, and the outer diameter of the piston 10 can be changed by changing the outer diameter of the third body 3, so that the inner diameter of the piston 10 can be changed by replacing a different second body 2, and the outer diameter of the piston 10 can be changed by replacing a different third body 3, so that the stiffness of the air spring 100 can be efficiently adjusted, which is beneficial to shortening the adjustment cycle, and can save molds and materials, which is beneficial to reducing the adjustment cost.
[0097] According to the vehicle of the embodiment of the utility model, including the air spring 100 of the above embodiment, the inner diameter of the piston 10 can be changed by changing the volume of the volume cavity 21 of the second body 2, and the outer diameter of the piston 10 can be changed by changing the outer diameter of the third body 3. Therefore, the inner diameter of the piston 10 can be changed by replacing a different second body 2, and the outer diameter of the piston 10 can be changed by replacing a different third body 3. The stiffness of the air spring 100 can be efficiently adjusted, which is beneficial to shortening the adjustment cycle, and can save molds and materials, which is beneficial to reducing the adjustment cost.
[0098] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0099] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.
[0100] In the description of the present invention, "plurality" means two or more.
[0101] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.
[0102] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0104] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A piston (10) for an air spring (100), characterized in that: include: A first body (1), wherein the first body (1) defines an installation space (13); a second body (2), the second body (2) being arranged in the installation space (13) and defining a volume cavity (21), the volume cavity (21) being suitable for communicating with an air bag (30) of the air spring (100); A third body (3), the third body (3) is sleeved on the outside of the first body (1) and is detachably connected to the first body (1).
2. The piston (10) for an air spring (100) according to claim 1, characterized in that: The inner wall of the first body (1) has a first limiting boss (11) protruding toward the installation space (13), and one end of the second body (2) abuts against the first limiting boss (11).
3. The piston (10) for an air spring (100) according to claim 1, characterized in that: The outer wall of the first body (1) has a second limiting boss (12) protruding radially outward, and one end of the third body (3) abuts against the second limiting boss (12).
4. The piston (10) for an air spring (100) according to claim 1, characterized in that: The third body (3) comprises: a first sub-body (31) and a second sub-body (32); the first sub-body (31) and the second sub-body (32) are both provided with at least one reinforcing rib (33) on one side facing the first body (1).
5. The piston (10) for an air spring (100) according to claim 1, characterized in that: The invention also comprises a cover body (50), wherein the volume cavity (21) has a first open end (211) and a second open end (212) opposite to each other, wherein the second open end (212) is suitable for being in communication with the airbag (30), and the cover body (50) is fixedly arranged at one end of the first body (1) and is used for sealing the first open end (211).
6. The piston (10) for an air spring (100) according to any one of claims 1 to 5, characterized in that: Along the axial direction of the piston (10), the outer diameter of at least a portion of the third body (3) gradually decreases.
7. The piston (10) for an air spring (100) according to claim 6, characterized in that: At least part of the outer wall surface of the third body (3) is configured as an arc surface convex toward the radial outside.
8. The piston (10) for an air spring (100) according to claim 6, characterized in that: At least part of the outer wall surface of the third body (3) is configured as an arc surface that is concave toward the radial inside.
9. An air spring (100), characterized in that: The air spring (100) comprises a piston (10) for an air spring (100) according to any one of claims 1 to 8; A mounting seat (20) and an airbag (30), one end of the airbag (30) is connected to the mounting seat (20), and the other end of the airbag (30) is connected to the piston (10).
10. A vehicle, characterized in that: Comprising an air spring (100) according to claim 9.