Framework type fluctuating piston for air spring, air spring and automobile

Abstract

The utility model provides a skeleton type fluctuating piston for an air spring, the air spring and an automobile, the skeleton type fluctuating piston comprises an outer shell, the thickness of each part of the outer shell along the radial direction is the same, one end of the outer shell is provided with a buckling section, and the outer surface of the buckling section is provided with anti-skidding teeth; and the supporting framework is arranged in the buckling and pressing section of the outer shell and is in close fit with the buckling and pressing section. By means of smooth transition between the outer shell and the supporting framework, the split outer shell and the supporting framework can be independently machined so as to be manufactured into a complete and sealable fluctuating piston capable of bearing specified pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle air springs, in particular to a skeleton type undulating piston used for an air spring, an air spring and a vehicle. Background Art

[0002] At present, the undulating piston of the automotive air spring is a structure with teeth for pressing the bladder, a curved section for the bladder to work, and a sealing function. The working principle is: the bladder is pressed to the end of the undulating piston teeth, and then the bladder is turned over to fit the curved section of the outer wall of the undulating piston. The outer wall of the undulating piston is the working surface of the bladder, and the other end of the undulating piston is sealed at the same time to form an enclosed space, and then compressed air of a certain pressure is filled inside. When the vehicle is driving, the air inside the undulating piston is continuously compressed and expanded, and the bladder moves up and down on the outer wall of the undulating piston, realizing the shock absorbing function of the air spring.

[0003] At present, cold extrusion or forging is used to initially shape structures with different wall thicknesses at one time, and then the piston is made into various shapes through processing. However, due to the thick wall thickness in some areas, it is difficult to shape the shape curve, and it is not easy to achieve a smooth transition between thick wall areas and thin wall areas, resulting in high production costs. At the same time, there are certain limitations on the curves that the product can make. Utility Model Content

[0004] In view of the shortcomings of the prior art mentioned above, the purpose of the utility model is to provide a skeleton-type undulating piston, an air spring and a car for an air spring, so as to solve the problems in the prior art that the outer wall curve of the shell of the undulating piston is difficult to form, the wall thickness and the wall thinness are not easy to achieve smooth transition, and the production cost is relatively high.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a skeleton-type undulating piston for an air spring, comprising: an outer shell, the thickness of the outer shell along its radial direction is the same at all places, a buckling section is provided at one end of the outer shell, and anti-slip teeth are provided on the outer surface of the buckling section; and a supporting skeleton, the supporting skeleton is arranged inside the buckling section of the outer shell and tightly matched with the buckling section.

[0006] In one embodiment of the present invention, the outer shell further includes a sealing section and a curved section, and the sealing section, the curved section and the pressing section are sequentially arranged along the axial direction of the outer shell.

[0007] In an embodiment of the present invention, the outer shell corresponding to the curved section includes a plurality of curved sections.

[0008] In an embodiment of the present invention, the support frame and the buckling section are fixed by riveting.

[0009] In one embodiment of the present invention, the outer shell is an integrally formed structure, and the supporting frame and the outer shell are both components made of metal materials.

[0010] In one embodiment of the present invention, the outer surface of the sealing section is a cylindrical O-ring sealing surface.

[0011] In one embodiment of the present invention, the top side of the support frame is disposed corresponding to the top side of the buckling section, and the bottom side of the support frame is disposed corresponding to the bottom side of the buckling section.

[0012] In one embodiment of the utility model, the supporting frame includes: an upper frame, which is a bowl-shaped structure with an opening facing upward, the top end of the side wall of the upper frame corresponds to the top side of the buckling section, and the bottom end of the side wall of the upper frame corresponds to the bottom side of the buckling section; and a lower frame, which is a bowl-shaped structure with an opening facing downward, and the top wall of the lower frame is connected to the bottom wall of the upper frame; wherein a first through hole is provided at the bottom center of the upper frame, and a second through hole corresponding to the first through hole is provided at the top center of the lower frame.

[0013] The utility model also provides an air spring, comprising the aforementioned skeleton type undulating piston for the air spring.

[0014] The utility model further provides a car, comprising the above-mentioned air spring.

[0015] Beneficial effects of the utility model: The utility model proposes a skeleton-type undulating piston, air spring and automobile for air springs. The undulating piston, air spring and automobile can be conveniently formed into curves of various shapes and structures directly through the outer shell through the mutual cooperation between the outer shell, the support skeleton and the anti-skid teeth. The support skeleton can be made into a structure of suitable thickness by lathe processing to achieve connection with the buckling section corresponding to the outer shell. The wall thickness combination area between the outer shell is formed to solve the problems of difficulty in forming the outer wall area of ​​the outer shell, difficulty in achieving smooth transition of thick and thin walls, and high production cost. That is, the outer shell of the utility model can also be made into curves of various shapes and structures by spinning, mold forming, water swelling and the like, and a smooth transition between the outer shell and the outer shell is achieved by using the support skeleton, thereby reducing the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the skeleton type undulating piston of the utility model.

[0017] Figure 2 It is a schematic diagram of the structure after the support frame in the skeleton type undulating piston of a preferred embodiment of the utility model is disassembled.

[0018] Component number description

[0019] Outer shell 1; support frame 2; anti-slip teeth 3; buckling section 11; sealing section 12; curved section 13; curved section 14; upper frame 21; lower frame 22; first through hole 211; second through hole 221. DETAILED DESCRIPTION

[0020] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0022] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0023] See also Figure 1-2 The utility model provides a skeleton-type undulating piston for an air spring, comprising: an outer shell 1, the outer shell 1 has the same thickness at all locations along its radial direction, a buckling section 11 is provided at one end of the outer shell 1, and an anti-slip tooth 3 is provided on the outer surface of the buckling section 11; and a supporting skeleton 2, the supporting skeleton 2 is arranged inside the buckling section 11 of the outer shell 1 and is tightly matched with the buckling section 11.

[0024] It is not difficult to find from the above content that in the design of the undulating piston in the air spring, by combining the outer shell 1 and the support frame 2 which are directly processed by using the same thickness size or in accordance with the set curve section, it is possible to separate the processing of the outer shell 1 and the processing of the support frame 2, thereby solving the problem that the thick wall area and the thin wall area are not convenient to be processed simultaneously on the same outer shell component. Among them, the support frame 2 is used to buckle the bladder, and the outer shell 1 provides support for the operation of the bladder. Specifically, the outer shell 1 is buckled and set on the support frame 2, and the buckling section 11 on the outer shell 1 corresponds to the side surface of the support frame 2. Then the anti-slip teeth 3 on the outside of the outer shell 1 are buckled with the bladder. By combining the outer shell 1 and the support frame 2 in the above-mentioned mutual buckling method, a complete, sealable, and undulating piston that can withstand a specified pressure can be formed. Moreover, the support frame 2 and the outer shell 1 can be separated into two parts for separate independent processing.

[0025] like Figure 1 and 2 As shown, the outer shell 1 further includes a sealing section 12 and a curved section 13 . The sealing section 12 , the curved section 13 and the pressing section 11 are arranged in sequence along the axial direction of the outer shell 1 .

[0026] In one embodiment of the utility model, the buckling section 11 on the top side of the outer shell 1 corresponds to the buckling surface of the support frame 2. On the bottom side of the buckling section 11, by using the cavity formed inside the curved section 13 to fill a certain pressure for compression control, the internal air of the undulating piston formed by the outer shell 1 and the support frame 2 is continuously compressed and expanded during the vehicle driving. The bladder moves up and down on the outer wall of the piston to realize the shock absorbing function of the air spring.

[0027] Specifically, the outer shell 1 corresponding to the curved section 13 includes a plurality of curved sections 14 .

[0028] In one embodiment of the utility model, in the curved section 13 of the outer shell 1, curves of various shapes and structures can be made by spinning, mold forming, water swelling, etc., and it is also easy to form a smooth transition between curved structures with relatively uniform thickness, thereby achieving lower processing costs.

[0029] Furthermore, the support frame 2 and the buckling section 11 are fixed by riveting. In this embodiment, the support frame 2 and the buckling section 11 can be installed and fixed by riveting.

[0030] Preferably, the outer shell 1 is an integrally formed structure, and the support frame 2 and the outer shell 1 are both components made of metal. In the present embodiment, the outer shell 1 can be an integrally formed structure with various shapes and structural curves of uniform thickness made by spinning, mold forming, water swelling, etc., so that it is easy to smoothly transition and the degree of processing is low. The support frame 2 can be made of hard metal material, such as aluminum material. The anti-slip teeth 3 are annular components with a certain rigidity, and can specifically be made of iron material. In a specific implementation, the support frame 2 can be a component mounted on the piston, or a component integrally formed with the piston. Of course, it can also be a combination with the piston in other forms.

[0031] Preferably, the outer surface of the sealing section 12 is a cylindrical O-ring sealing surface.

[0032] Furthermore, a top side of the support frame 2 is disposed corresponding to a top side of the buckling section 11 , and a bottom side of the support frame 2 is disposed corresponding to a bottom side of the buckling section 11 .

[0033] In one embodiment of the utility model, the support frame 2 is structurally designed by making the top side of the support frame 2 correspond to the top of the buckling section 11, and making the bottom side of the support frame 2 correspond to the bottom side of the buckling area 11. Thus, the outer shell 1 can fully cover the support frame 2 when the buckling section 11 is buckled.

[0034] Specifically, the supporting frame 2 includes: an upper frame 21, which is a bowl-shaped structure opening upward, the top end of the side wall of the upper frame 21 corresponds to the top side of the buckling section 11, and the bottom end of the side wall of the upper frame 21 corresponds to the bottom side of the buckling section 11; and a lower frame 22, which is a bowl-shaped structure opening downward, and the top wall of the lower frame 22 is connected to the bottom wall of the upper frame 21; wherein, a first through hole 211 is provided at the bottom center of the upper frame 21, and a second through hole 221 corresponding to the first through hole 211 is provided at the top center of the lower frame 22.

[0035] In one embodiment of the present invention, in the structural design of the support frame 2, the bowl-shaped upper frame 21 and the bowl-shaped lower frame 22 are processed by die-casting, which is easy to produce and saves material costs. Specifically, a first through hole 211 is provided in the middle area of ​​the upper frame 21, and a second through hole 221 corresponding to the first through hole 211 is also provided in the middle area of ​​the lower frame 22. Moreover, the radial dimension of the bowl-shaped structure formed by the upper frame 21 is greater than the radial dimension of the bowl-shaped structure formed by the lower frame 22.

[0036] The utility model also provides an air spring, comprising the aforementioned skeleton type undulating piston for the air spring.

[0037] The utility model further provides a car, comprising the above-mentioned air spring.

[0038] In summary, the utility model can realize the cooperation between the outer shell 1 with uniform thickness and the support skeleton 2 to form a skeleton-supported combined undulating piston for use with the bladder of the air spring through the mutual cooperation between the support skeleton 2 and the outer shell 1. Specifically, the outer shell 1 can be made into curves of various shapes and structures with uniform thickness by relatively simple methods such as spinning, mold forming, water swelling, etc., and then buckled and installed with the support skeleton 2 of preset thickness size, and the anti-skid teeth 3 on the outside of the buckling section 11 of the outer shell 1 help to strengthen the buckling cooperation between the bladder and the buckling section 11 of the outer shell 1 to prevent the bladder from sliding off the outer shell 1. In this way, the outer shell 1 and the support skeleton 2 are combined with each other to form a complete, sealable, and pressure-resistant undulating piston to cooperate with the bladder to form an air spring. Therefore, the utility model effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0039] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A skeleton type heaving piston for an air spring, characterized in that: include: An outer shell (1), wherein the outer shell (1) has the same thickness at all locations along its radial direction, a buckling section (11) is provided at one end of the outer shell (1), and an anti-slip tooth (3) is provided on the outer surface of the buckling section (11); and A support frame (2), wherein the support frame (2) is arranged inside the buckling section (11) of the outer shell (1) and is tightly matched with the buckling section (11).

2. The skeleton type heaving piston for an air spring according to claim 1, characterized in that: The outer shell (1) further comprises a sealing section (12) and a curved section (13); the sealing section (12), the curved section (13) and the pressing section (11) are arranged in sequence along the axial direction of the outer shell (1).

3. The skeleton type heaving piston for an air spring according to claim 2, characterized in that: The outer shell (1) corresponding to the curved section (13) comprises a plurality of curved sections (14).

4. The skeleton type heaving piston for an air spring according to claim 1, characterized in that: The support frame (2) and the buckling section (11) are fixed by riveting.

5. The skeleton type heaving piston for an air spring according to claim 1, characterized in that: The outer shell (1) is an integrally formed structure, and the support frame (2) and the outer shell (1) are both components made of metal materials.

6. The skeleton type heaving piston for an air spring according to claim 2, characterized in that: The outer surface of the sealing section (12) is a cylindrical O-ring sealing surface.

7. The skeleton type heaving piston for an air spring according to claim 1, characterized in that: The top side of the support frame (2) is arranged corresponding to the top side of the buckling section (11), and the bottom side of the support frame (2) is arranged corresponding to the bottom side of the buckling section (11).

8. The skeleton type heaving piston for an air spring according to claim 2, characterized in that: The support frame (2) comprises: an upper frame (21), the upper frame (21) being a bowl-shaped structure with an opening facing upward, the top end of the side wall of the upper frame (21) corresponding to the top side of the buckling section (11), and the bottom end of the side wall of the upper frame (21) corresponding to the bottom side of the buckling section (11); and A lower frame (22), wherein the lower frame (22) is a bowl-shaped structure with an opening facing downward, and the top wall of the lower frame (22) is connected to the bottom wall of the upper frame (21); A first through hole (211) is provided at the bottom center of the upper frame (21), and a second through hole (221) corresponding to the first through hole (211) is provided at the top center of the lower frame (22).

9. An air spring, characterized in that: A skeleton-type undulating piston for an air spring comprising any one of claims 1-8.

10. An automobile, characterized in that: Includes the air spring as described in claim 9.

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