Air spring buckling device

Abstract

The utility model provides an air spring buckling and pressing device which comprises an outer shell and a lining piece, a first cavity and a second cavity are formed in the outer shell, a clamping ring is formed between the first cavity and the second cavity, the lining piece comprises a guide-in part and a sealing part, a first groove is formed between the guide-in part and the sealing part, and a second groove is formed between the guide-in part and the sealing part. The guide-in part can be slowly guided into the second cavity for installation, after installation, limiting is carried out through clamping of the first groove and the clamping ring, the stability of the structure can be guaranteed, and the air bag is prevented from falling off during back-off; the air bag is installed in the first cavity and located between the outer shell and the lining piece, sealing is achieved through the extrusion effect of the outer shell and the lining piece, the sealing effect is further enhanced through the sealing part and the sawtooth-shaped structure in the first cavity, and connection stability is guaranteed. The buckling device is simple in overall structure, convenient to install, good in sealing effect, quite stable in connecting structure and capable of effectively preventing the air bag from being pulled off.

Description

Technical Field

[0001] The utility model belongs to the field of air bags, and in particular relates to an air spring buckling device. Background Art

[0002] Air springs are sealed containers filled with compressed air, leveraging the compressibility of the gas to achieve their elastic properties, resulting in ideal nonlinear elastic properties. Air springs typically consist of a crimping device and a cover that seals the airbag. Currently, most airbag seals use a steel ring that deforms after crimping, squeezing the rubber airbag to create a seal. This requires specialized crimping equipment, increasing equipment costs and creating a complex structure. Furthermore, there's a risk of the ring falling off if it's not properly crimped. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an air spring buckling device, which has a simple structure, is easy to assemble, can achieve good sealing of the air spring, and effectively prevent the airbag from falling off.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides an air spring buckling device, comprising:

[0005] an outer shell, the outer shell comprising a first chamber and a second chamber, a snap ring being formed between the first chamber and the second chamber, and the airbag being assembled in the first chamber;

[0006] An inner lining member is provided in the outer shell, the airbag is provided between the outer shell and the inner lining member, and the inner lining member includes:

[0007] an introduction portion, the introduction portion being capable of being deformed and pressed into the second cavity;

[0008] a sealing portion, disposed in the first chamber, wherein the airbag is engaged between the sealing portion and an inner wall of the first chamber;

[0009] A first groove is formed between the introduction portion and the sealing portion, and the first groove is engaged with the airbag and the snap ring to form a seal.

[0010] In an optional embodiment of the present invention, the outer surface of the sealing portion is provided with a serrated structure.

[0011] In an optional embodiment of the present invention, the inner wall of the first chamber is also provided with the serrated structure.

[0012] In an optional embodiment of the present invention, the introduction portion is in a truncated cone shape, and the diameter of the introduction portion gradually decreases from an end close to the sealing portion to an end away from the sealing portion.

[0013] In an optional embodiment of the present invention, an end surface of the first groove is interference fit with the airbag and the clamping ring.

[0014] In an optional embodiment of the present invention, a plurality of second grooves are formed on the introduction portion, and the second grooves penetrate the introduction portion in a radial direction and penetrate the introduction portion and part of the first grooves in an axial direction.

[0015] In an optional embodiment of the present invention, a central hole is formed in the introduction portion and the first groove.

[0016] In an optional embodiment of the present invention, the lining is made of elastic material.

[0017] In an optional embodiment of the present invention, the shape of the first chamber matches the shape of the sealing portion.

[0018] In an optional embodiment of the present invention, there is an interference fit between the sealing portion and the airbag, and between the inner wall of the first chamber and the airbag.

[0019] The technical effect of the present invention is that the airbag is fixed and sealed by means of the cooperation of the inner lining and the outer shell to extrude and deform the airbag, with fewer parts, a simpler structure, and easy installation; the first groove between the introduction part and the sealing part is fixed with the snap ring on the outer shell, and the interference fit between the connecting parts ensures the stability of the overall connection and the undercut structure, and the sealing effect is good; the serrated structure on the inner lining and the outer shell further enhances the sealing strength; the introduction part is truncated cone-shaped and is provided with a second groove, which facilitates the deformation of the introduction part and is pressed into the second chamber, reducing the pressure-in resistance, making the installation more labor-saving, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a cross-sectional view of the connection of the air spring buckling device in one embodiment of the present utility model;

[0022] Figure 2 This is a connection structure diagram of an air spring buckling device in one embodiment of the present utility model;

[0023] Figure 3 This is a connection structure diagram of the air spring buckling device from another perspective in one embodiment of the present utility model.

[0024] Description of labels:

[0025] 100, outer shell; 200, lining; 300, airbag; 400, serrated structure;

[0026] 110, first chamber; 120, second chamber; 130, snap ring;

[0027] 210, introduction portion; 220, first groove; 230, sealing portion;

[0028] 211. Second groove; 212. Center hole. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features within these embodiments may be combined with one another, unless they conflict.

[0030] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not 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 complex.

[0031] Air springs are generally made of a crimping device and an upper cover to seal the airbag. Currently, most airbag seals use a steel ring that is crimped and deformed to squeeze the rubber airbag to form a seal. Special crimping equipment is required to crimp the steel ring, which increases equipment investment costs, has a complex structure, and there is a risk of the pressure ring falling off if it is not crimped in place.

[0032] See also Figures 1 to 3 The utility model proposes an air spring buckling device, including an outer shell 100 and an inner lining member 200. A chamber is formed in the outer shell 100. The inner lining member 200 and the airbag 300 are assembled inside the outer shell 100. The airbag 300 is arranged between the outer shell 100 and the inner lining member 200. The airbag 300 is squeezed and sealed by the cooperation of the inner lining member 200 and the outer shell 100. It has a simple structure, is easy to install, and has a good sealing effect. The special structure can prevent the airbag 300 from falling off when it is inverted, thereby ensuring the stability of the overall structure.

[0033] See also Figures 1 to 3In an optional embodiment of the present invention, the outer shell 100 includes a first chamber 110, a second chamber 120 and a retaining ring 130, and the lining member 200 is arranged in the outer shell 100. The first chamber 110 is a buckling area. The airbag 300 is installed in the first chamber 110, and a sealed connection is achieved in the first chamber 110. The retaining ring 130 is formed between the first chamber 110 and the second chamber 120, and the second chamber 120 and the retaining ring 130 structure are used in conjunction with the inner lining member 200 to achieve an overall stable connection. Specifically, in the first chamber 110, the airbag 300 is installed between the lining part 200 and the outer shell 100, and the airbag 300 is squeezed and sealed by the action of the inner wall of the outer shell 100 and the lining part 200; in the second chamber 120, the lining part 200 is limited by the matching connection between the end face of the retaining ring 130 and the inner lining part 200 to ensure the stability of the overall connection, and the engagement of the retaining ring 130 part ensures the stability of the inverted structure to prevent it from falling off.

[0034] See also Figures 1 to 3 In an optional embodiment of the present invention, the lining member 200 includes an introduction portion 210 , a first groove 220 and a sealing portion 230 . The introduction part 210 can be deformed and pressed into the second chamber 120. The first groove 220 is formed between the introduction part 210 and the sealing part 230. After the introduction part 210 enters the airbag 300, it is deformed and shrunk when passing through the retaining ring 130 axially from the first chamber 110 downward and is pressed into the second chamber 120. After the introduction part 210 enters the second chamber 120, the first groove 220 is engaged with the airbag 300 and the retaining ring 130 to form a seal; the sealing part 230 is arranged in the first chamber 110, and the airbag 300 is installed between the sealing part 230 and the inner wall of the first chamber 110. It is engaged between the sealing part 230 and the inner wall of the first chamber 110, and the interaction between the sealing part 230 and the outer shell 100 is used to form an extrusion sealing effect similar to a sealing ring, thereby achieving sealing of the airbag 300. It can be understood that the lining member 200 is an integral structure, which cooperates with the inner cavity structure of the outer shell 100 to seal the airbag 300 and ensure the reliability of the overall connection. It has a simple structure and is easy to install.

[0035] See also Figures 1 to 3In an optional embodiment of the present invention, the introduction portion 210 is truncated cone-shaped, and its diameter gradually decreases from the end close to the sealing portion 230 to the end away from the sealing portion 230. The truncated cone-shaped introduction portion 210 facilitates slow introduction into the second chamber 120 through extrusion deformation. During the introduction process, the pressure value gradually increases. After the introduction portion 210 enters the second chamber 120 and releases the deformation, it can be firmly engaged with the clamping ring 130. At the same time, a plurality of second grooves 211 are also provided on the introduction portion 210. The second grooves 211 penetrate the introduction portion 210 in the radial direction and penetrate the introduction portion 210 and part of the first grooves 220 in the axial direction. Specifically, for example, four second grooves 211 can be evenly provided along the axial direction, which divides the introduction portion 210 into four parts with a certain gap between each part. The groove gap can effectively reduce the pressure-in resistance, make the installation more labor-saving, and improve work efficiency. A center hole 212 may be further provided in the introduction portion 210 and the first groove 220 . The center hole 212 passes through the introduction portion 210 and part of the first groove 220 , thereby reducing resistance and facilitating deformation of the introduction portion 210 during the introduction process, making installation more labor-saving.

[0036] See also Figures 1 to 3 In an optional embodiment of the present invention, a serrated structure 400 is provided on the outer surface of the sealing portion 230 and the inner wall of the first chamber 110. Because the airbag 300 is made of flexible rubber, when the airbag 300 is squeezed between the sealing portion 230 and the inner wall of the first chamber 110, the flexible rubber airbag 300 deforms under the action of external force and is squeezed into the gap of the serrated structure 400, thereby engaging the airbag 300. This further improves the sealing strength and structural stability, effectively preventing the airbag 300 from falling out.

[0037] See also Figures 1 to 3 In an optional embodiment of the present invention, an interference fit is formed between the end surface of the first groove 220 and the airbag 300 and the snap ring 130 to ensure stable engagement and good sealing. Specifically, the upper end surface of the first groove 220 is the bottom surface of the sealing part 230, and the lower end surface of the first groove 220 is the top surface of the introduction part 210, which is connected to the retaining ring 130 as a clamping platform to achieve axial limitation, and the end of the airbag 300 is installed between the upper end surface of the first groove 220 and the upper end surface of the retaining ring 130; in the process of pressing the introduction part 210 into the second chamber 120, the upper end surface of the first groove 220 gradually approaches and squeezes the end of the airbag 300. After the installation is completed, the upper end surface of the first groove 220 and the upper end surface of the retaining ring 130 squeeze the end of the airbag 300 to achieve sealing and fixation. At the same time, the lower end surface of the first groove 220, that is, the top surface of the introduction part 210, is tightly engaged with the end surface of the retaining ring 130 on the outer shell 100 to achieve axial limitation, prevent the airbag 300 from falling off when it is inverted, and effectively ensure the stability of the overall structure through interaction.

[0038] See also Figures 1 to 3 In an optional embodiment of the present invention, an interference fit is formed between the sealing portion 230 and the airbag 300, and between the inner wall of the first chamber 110 and the airbag 300. After the airbag 300 is installed on the outer shell 100, its side surface shrinks and deforms along the extrusion direction under the extrusion action of the lining member 200 and the outer shell 100. After the lining member 200 is installed, it and the airbag 300, as well as the airbag 300 and the outer shell 100, are squeezed to form a tight seal, while enhancing the friction force, improving the stability of the connection, and effectively preventing the airbag 300 from falling off. It is understandable that after installation, the airbag 300 is stuck between the sealing portion 230 and the inner wall of the first chamber 110 and forms an effective seal through an interference fit. The side surface of the first groove 220 and the side surface of the retaining ring 130 can be a clearance fit, which is convenient for installation and does not affect the sealing performance of the airbag 300.

[0039] See also Figures 1 to 3 In an optional embodiment of the present invention, the shape of the first chamber 110 matches the shape of the sealing portion 230. By matching the shapes of the lining member 200 and the outer shell 100 and the interaction between the components, an effective seal can be formed, which is convenient for installation. For example, the airbag 300 is conical, and the first chamber 110 of the outer shell 100 and the sealing portion 230 of the lining member 200 are also conical. The airbag 300 is pressed between the first chamber 110 and the sealing portion 230, and is fixed and sealed under the mutual squeezing action of the forces on both sides. It can be understood that the shapes of the outer shell 100 and the lining member 200 are not limited, and they can achieve sealing of the airbag 300 by cooperating with each other.

[0040] See also Figures 1 to 3 In an optional embodiment of the present invention, the lining member 200 is made of an elastic material, which facilitates the deformation of the introduction part 210 to enter the second chamber 120 for snap connection. The outer shell 100 also has a certain elasticity. For example, the lining member 200 and the outer shell can be plastic parts. The special structure of the introduction part 210 can be used to easily achieve installation. After the installation is completed, the deformation of the lining member 200 and the outer shell 100 is used to squeeze the airbag 300. The airbag 300 is squeezed, shrunk and deformed, and is tightly stuck between the lining member 200 and the outer shell 100, thereby ensuring sealing. The installation is simple and the sealing effect is good, and the overall structural stability is high.

[0041] See also Figures 1 to 3In an optional embodiment of the present invention, during installation, the airbag 300 is first installed in the first chamber 110 of the outer shell 100, and then the introduction part 210 of the lining member 200 is placed in the airbag 300, and the lining member 200 is pressed downward as a whole in the axial direction. Due to the special structure of the introduction part 210, when it passes through the clamping ring 130, it will deform and shrink inward under the action of pressure, thereby passing through the clamping ring 130 and slowly introduced into the second chamber 120. Since the introduction part 210 is a truncated cone, the pressure gradually increases during the introduction process. When it completely enters the second chamber 120, the deformation is released and it is stuck in the second chamber 120. At this time, the lower end face of the first groove 220, that is, the upper end face of the introduction part 210, is engaged with the end face of the retaining ring 130, and the upper end face of the first groove 220, that is, the lower end face of the sealing part 230 and the retaining ring 130 squeeze the bottom of the airbag 300 to achieve sealing and fixation, forming an inverted structure that cannot be withdrawn, thereby locking the airbag 300; at the same time, the airbag 300 is squeezed as a whole between the side of the sealing part 230 and the side wall of the first chamber 110, forming a complete seal, and the airbag 300 is deformed and engaged and filled in the gap of the serrated structure 400 of the lining part 200 and the outer shell 100, further strengthening the sealing and fixation.

[0042] In summary, the air spring buckling device of the present invention utilizes the lining member 200 and the outer shell 100 to engage and seal the airbag 300, and squeezes the airbag 300 through interference fit to achieve reliable sealing; the first groove 220 of the lining member 200 is connected with the retaining ring 130 of the outer shell 100, and the lining member 200 is engaged and fixed with the outer shell 100, thereby ensuring the stability of the connection of the airbag 300. At the same time, the structures on the lining member 200 and the outer shell 100 further enhance the sealing and connection stability. After the airbag 300 is installed, the inverted structure is stable and will not be pulled off under the action of external force. The overall connection is stable and has good sealing performance; the entire device has a simple structure and few parts. There is no need to install additional parts such as pressure rings. The overall installation can be achieved by only cooperating with the lining member 200 and the outer shell 100. The introduction part 210 can ensure the stability of the installation process, and the groove gap is used to effectively reduce the installation resistance, making installation convenient and labor-saving.

[0043] 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 skilled in the art 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 one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

[0044] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0045] Reference throughout this specification to "one embodiment," "an embodiment," or "a specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and illustrated herein are possible in light of the teachings herein and are considered part of the spirit and scope of the invention.

[0046] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0047] In addition, unless otherwise expressly indicated, any marking arrows in the drawings should be regarded as illustrative only and not limiting. Furthermore, unless otherwise indicated, the term "or" as used herein is generally intended to mean "and / or." Where a term is unclear in providing separation or combination capabilities, the combination of components or steps will also be considered as indicated.

[0048] As used in the description herein and throughout the claims that follow, “a,” “an,” and “the” include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on” unless otherwise indicated.

[0049] The above description of the illustrated embodiments of the present invention (including that described in the Abstract) is not intended to be exhaustive or to limit the present invention to the precise forms disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention, as those skilled in the art will recognize and understand. As noted, these modifications may be made to the present invention in light of the above description of the illustrated embodiments of the present invention, and these modifications will be within the spirit and scope of the present invention.

[0050] The systems and methods have been generally described herein in detail to facilitate understanding of the present invention. In addition, various specific details have been given to provide an overall understanding of the embodiments of the present invention. However, those skilled in the relevant art will recognize that the embodiments of the present invention can be practiced without one or more of the specific details, or can be practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusing various aspects of the embodiments of the present invention.

[0051] Thus, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are within the foregoing disclosure, and it should be understood that in some cases, some features of the present invention will be employed without the corresponding use of other features without departing from the scope and spirit of the proposed invention. Thus, many modifications may be made to adapt particular circumstances or materials to the true scope and spirit of the present invention. The present invention is not intended to be limited to the specific terminology used in the claims below and / or to the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined solely by the appended claims.

Claims

1. An air spring buckling device, characterized in that: include: an outer shell, the outer shell comprising a first chamber and a second chamber, a snap ring being formed between the first chamber and the second chamber, and the airbag being assembled in the first chamber; An inner lining member is provided in the outer shell, the airbag is provided between the outer shell and the inner lining member, and the inner lining member includes: an introduction portion, the introduction portion being capable of being deformed and pressed into the second cavity; a sealing portion, disposed in the first chamber, wherein the airbag is engaged between the sealing portion and an inner wall of the first chamber; A first groove is formed between the introduction portion and the sealing portion, and the first groove is engaged with the airbag and the snap ring to form a seal.

2. The air spring buckling device according to claim 1, characterized in that: The outer surface of the sealing portion is provided with a serrated structure.

3. The air spring buckling device according to claim 2, characterized in that: The inner wall of the first chamber is also provided with the serrated structure.

4. The air spring buckling device according to claim 1, characterized in that: The introduction portion is in a truncated cone shape, and a diameter of the introduction portion gradually decreases from an end close to the sealing portion to an end away from the sealing portion.

5. The air spring buckling device according to claim 1, characterized in that: An end surface of the first groove is in interference fit with the airbag and the clamping ring.

6. The air spring buckling device according to claim 1, characterized in that: The introduction portion is provided with a plurality of second grooves, the second grooves penetrate the introduction portion in a radial direction and penetrate the introduction portion and a portion of the first grooves in an axial direction.

7. The air spring buckling device according to claim 1, characterized in that: A central hole is formed in the introduction portion and the first groove.

8. The air spring buckling device according to claim 1, characterized in that: The lining piece is made of elastic material.

9. The air spring buckling device according to claim 1, characterized in that: The shape of the first chamber matches the shape of the sealing portion.

10. The air spring buckling device according to claim 1, characterized in that: There is interference fit between the sealing portion and the airbag, and between the inner wall of the first chamber and the airbag.

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