Air spring cover structure and air spring assembly

Abstract

The utility model provides an air spring cover plate structure and an air spring assembly. The air spring cover plate structure includes a cover body and a buckling support member clamped with the cover body. A split cover plate structure is adopted. After the end opening of the air spring airbag is sleeved on the buckling support member, the air spring airbag only needs to be buckled on the buckling support member through a buckling ring, and the arc surface of the first outer flange abuts against the shoulder of the air spring airbag. The connection structure has strong stability, plays an effective beam-forming role on the air spring airbag, and can restrain the curling of the air spring airbag. In addition, there is an avoidance gap between the inner peripheral surface of the annular edge of the cover body and the outer peripheral surface of the corresponding end of the air spring airbag. The arc surface of the first outer flange contacts the shoulder of the air spring airbag, which effectively reduces the contact area between the cover body and the air spring airbag and further reduces the friction, avoiding the cover body from rubbing or scratching the shoulder of the air spring airbag, causing the air spring airbag to wear and fail.

Description

Technical Field

[0001] The utility model belongs to the technical field of air springs, and in particular relates to an air spring cover plate structure and an air spring assembly. Background Art

[0002] An air spring is a spring filled with compressed air in a flexible and sealed container, which uses the compressibility of gas to achieve its vibration isolation and buffering effects. It is commonly known as an airbag, airbag cylinder, leather cylinder, etc. Since air springs have ideal nonlinear elastic characteristics, after the height adjustment device is installed, the vehicle height does not change with the increase or decrease of the load, the spring stiffness can be designed to be lower, and the ride comfort is good. Therefore, air springs are widely used in self-adjusting air suspension systems for commercial vehicles, buses, rail vehicles, machinery and equipment, and building bases. At present, the air spring assembly generally uses a buckle to achieve the seal between the air spring airbag and the air spring cover structure. The air spring cover structure is prone to friction or scratches on the shoulder of the air spring airbag, which will not only cause the air spring airbag to curl severely and reduce the durability of the air spring airbag, but also cause the air spring airbag to wear and fail. Utility Model Content

[0003] Based on the above-mentioned problems existing in the prior art, one of the purposes of the embodiment of the utility model is to provide an air spring cover structure to solve the problem that the air spring cover in the prior art is prone to friction or scratches on the shoulder of the air spring airbag, which not only causes the air spring airbag to curl, but also causes the air spring airbag to wear and fail.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an air spring cover plate structure, comprising:

[0005] The cover body comprises a cover plate and an annular peripheral edge connected to the cover plate, wherein a positioning boss is protruding from the central area of ​​the inner side of the cover plate;

[0006] A buckling support member, used for being sleeved by the end opening of the air spring airbag, wherein the buckling support member is detachably installed in the cover body; and

[0007] A buckling ring, which is sleeved on the buckling support, and is used to buckle the air spring airbag on the buckling support to shape the air spring airbag;

[0008] Among them, the buckling support is respectively provided with an annular protrusion for engaging in the annular groove inside the cover body and a positioning cavity for the positioning boss to be embedded, and there is an avoidance gap between the inner circumferential surface of the annular edge and the outer circumferential surface of the corresponding end of the air spring airbag. The annular edge is provided with a first outer flange for resisting the shoulder of the air spring airbag, and the surface of the first outer flange is an arc surface.

[0009] Furthermore, the buckling support is provided with a second outer flange for contacting the air spring airbag, and the surface of the second outer flange is an arc-shaped surface.

[0010] Furthermore, an anti-slip structure is provided on a socket surface of the buckling support member for socketing the end opening of the air spring airbag.

[0011] Furthermore, the anti-skid structure is an anti-skid thread, an anti-skid serration, an anti-skid pattern or an anti-skid coating.

[0012] Furthermore, the air spring cover structure also includes a support ring for expanding the buckling support member, and the support ring is supported inside the buckling support member.

[0013] Furthermore, the air spring cover structure also includes a snap assembly for snap-connecting the cover body to the buckling support, the snap assembly includes a clamping piece provided on the buckling support and a slot structure for cooperating to clamp and fix the clamping piece, and the slot structure is provided on the cover body.

[0014] Furthermore, the slot structure is a through hole provided on the cover plate, and the clip includes an elastic arm provided on the buckling support and a barb provided at one end of the elastic arm away from the buckling support, and after the elastic arm passes through the through hole, the barb can be pushed radially outward toward the through hole to enable the barb to be hooked with the cover plate.

[0015] Furthermore, a positioning protrusion is provided on the annular protrusion, and a positioning groove for cooperating and clamping with the positioning protrusion is provided on the cover plate.

[0016] Furthermore, the central area of ​​the cover plate is recessed inward so that a positioning boss is formed in the central area of ​​the inner side of the cover plate; the edge of the first outer flange extends upward along the axial direction of the annular edge to form a reinforcement ring, and the outer periphery of the annular edge is connected to the reinforcement ring through a plurality of connecting ribs.

[0017] Based on the above problems existing in the prior art, a second purpose of the embodiments of the present utility model is to provide an air spring assembly having an air spring cover structure in any of the above schemes.

[0018] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an air spring assembly, including the air spring cover plate structure provided by any of the above-mentioned solutions.

[0019] Compared with the prior art, the above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects:

[0020] The air spring cover plate structure and air spring assembly in the embodiment of the utility model include a cover body and a buckling support member clamped with the cover body, and a split cover plate structure is adopted. After the end opening of the air spring airbag is sleeved on the buckling support member, the air spring airbag only needs to be buckled on the buckling support member through the buckling ring, and the arc surface of the first outer flange abuts against the shoulder of the air spring airbag. The connection structure has strong stability, plays an effective beam-forming role on the air spring airbag, and can restrain the curling of the air spring airbag. In addition, there is an avoidance gap between the inner peripheral surface of the annular edge of the cover body and the outer peripheral surface of the corresponding end of the air spring airbag. The arc surface of the first outer flange contacts the shoulder of the air spring airbag, which effectively reduces the contact area between the cover body and the air spring airbag and further reduces the friction, avoiding the cover body from rubbing or scratching the shoulder of the air spring airbag, causing the air spring airbag to wear and fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative labor.

[0022] Figure 1 A schematic cross-sectional view of the air spring cover structure provided by the utility model;

[0023] Figure 2 A schematic cross-sectional view of a cover body provided in an embodiment of the utility model;

[0024] Figure 3 A schematic cross-sectional view of a buckling support member provided in an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the three-dimensional structure of a cover body provided in an embodiment of the utility model;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of a cover body provided by another embodiment of the utility model;

[0027] Figure 6 An exploded view of an air spring cover structure provided in another embodiment of the utility model.

[0028] Among them, the reference numerals in the figure are:

[0029] 1-cover body; 11-cover plate; 12-annular surrounding edge; 13-positioning boss; 14-annular groove; 15-first outer flange; 16-positioning groove; 17-recessed groove; 18-reinforcement ring; 19-connecting rib;

[0030] 2- buckling support; 21- annular protrusion; 22- positioning cavity; 23- second outer flange; 24- anti-slip structure; 25- positioning protrusion;

[0031] 3- buckling ring; 4- avoidance gap; 5- arc surface; 6- support ring;

[0032] 7- buckle assembly; 71- clamping member; 711- elastic arm; 712- barb; 713- plug-in positioning member; 72- slot structure;

[0033] 8-air spring airbag; 81-end; 82-shoulder. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 device or element referred to must have a dedicated orientation, be constructed and operated in a dedicated orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] Reference throughout the specification to "one embodiment" or "an embodiment" means that the specialized features, structures, or characteristics described in connection with the embodiment are included in at least one embodiment of the present application. Thus, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all of which refer to the same embodiment. Furthermore, in one or more embodiments, the specialized features, structures, or characteristics may be combined in any suitable manner.

[0040] Please also read Figures 1 to 6The air spring cover plate structure provided by the embodiment of the utility model is now described. The air spring cover plate structure provided by the embodiment of the utility model includes a cover body 1 and a buckling support 2. The cover body 1 includes a cover plate 11 and an annular rim 12 connected to the cover plate 11. A positioning boss 13 is convexly provided in the central area on the inner side of the cover plate 11. The buckling support 2 is used for the end 81 of the air spring airbag 8 to be opened and sleeved, and the buckling support 2 is detachably installed in the cover body 1. The buckling ring 3 is sleeved on the buckling support 2, and the buckling ring 3 is used to buckle the air spring airbag 8 on the buckling support 2 to bundle the air spring airbag 8 and restrain the curling of the air spring airbag 8. Specifically, the buckling support 2 is provided with an annular protrusion 21 for engaging with the inner annular groove 14 of the cover 1 and a positioning cavity 22 for the positioning boss 13 to be embedded. The side annular groove 14 is an annular groove-shaped accommodation space formed by the concave space between the annular rim 12 and the positioning boss 13. The positioning cavity 22 is arranged at the position of the positioning boss 13 in the central area of ​​the upper surface of the buckling support 2. When the annular protrusion 21 on the buckling support 2 is embedded in the annular groove 14 on the cover 1, the positioning boss 13 of the cover 1 is embedded in the positioning cavity 22 of the buckling support 2, so as to realize the positioning and clamping of the buckling support 2 and the cover 1, and facilitate the disassembly and assembly of the buckling support and the cover 1 and the stability of the connection. There is an avoidance gap 4 between the inner circumference of the annular rim 12 and the outer circumference of the corresponding end 81 of the air spring airbag 8, which reduces the contact area between the cover 1 and the air spring airbag 8 and reduces friction, and is also conducive to reducing the curling degree of the air spring airbag 8. In addition, a first outer flange 15 for contacting the shoulder 82 of the air spring airbag 8 is provided on the annular edge 12. The surface of the first outer flange 15 is an arc surface 5. The arc surface 5 of the first outer flange 15 contacts the shoulder 82 of the air spring airbag 8 to achieve contact with the shoulder 82 of the air spring airbag 8, thereby effectively reducing the contact area between the cover body 1 and the air spring airbag 8 and further reducing the friction, thereby avoiding the cover body 1 from rubbing or scratching the shoulder 82 of the air spring airbag 8, causing the air spring airbag 8 to wear and fail.

[0041] Compared with the prior art, the air spring cover plate structure provided by the embodiment of the utility model includes a cover body 1 and a buckling support 2 clamped with the cover body 1, and adopts a split cover plate 11 structure. While ensuring the structural strength of the cover plate 11, the overall weight of the cover plate 11 structure is reduced, and the split cover plate 11 can be modularized to adapt to different products, thereby reducing costs. After the end 81 of the air spring airbag 8 is opened and sleeved on the buckling support 2, the air spring airbag 8 is buckled on the buckling support 2 only through the buckling ring 3, and the arc surface 5 of the first outer flange 15 is abutted against the shoulder 82 of the air spring airbag 8. The connection structure has strong stability, plays an effective beam-forming role on the air spring airbag 8, and can restrain the curling of the air spring airbag 8. In addition, there is an avoidance gap 4 between the inner circumferential surface of the annular edge 12 of the cover body 1 and the outer circumferential surface of the corresponding end 81 of the air spring airbag 8. The arc surface 5 of the first outer flange 15 contacts the shoulder 82 of the air spring airbag 8, effectively reducing the contact area between the cover body 1 and the air spring airbag 8 and further reducing the friction, thereby preventing the cover body 1 from rubbing or scratching the shoulder 82 of the air spring airbag 8, causing the air spring airbag 8 to wear and fail.

[0042] Please refer to Figure 1 , Figure 2 and Figure 5 In some embodiments, the buckling support 2 is provided with a second outer flange 23 for contacting the air spring airbag 8, and the surface of the second outer flange 23 is an arc-shaped surface. The arc-shaped surface of the second outer flange 23 contacts the inner side surface of the air spring airbag 8. On the one hand, it can be helpful to cooperate with the buckling ring 3 to play a beam-shaped role on the air spring airbag 8 and restrain the curling of the air spring airbag 8. On the other hand, it can effectively reduce the contact area between the cover body 1 and the air spring airbag 8 to further reduce the friction, thereby avoiding the cover body 1 from rubbing or scratching the shoulder 82 of the air spring airbag 8, causing the air spring airbag 8 to wear and fail.

[0043] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the buckling support 2 is provided with an anti-slip structure 24 on the socket surface for the end 81 of the air spring airbag 8 to be socketed, so as to enhance the stability of the connection between the air spring airbag 8 and the buckling support 2. It should be noted that the anti-slip structure 24 can be, but is not limited to, anti-slip threads, anti-slip serrations, anti-slip patterns or anti-slip coatings.

[0044] Please refer to Figure 1 , Figure 2 and Figure 3In some of the embodiments, the air spring cover plate structure also includes a support ring 6 for expanding the buckling support member 2. The support ring 6 is supported and connected to the inside of the buckling support member 2. The buckling support member 2 is supported radially outward from the inside of the buckling support member 2 by the support ring 6, and then the buckling ring 3 is used to buckle the mouth of the air spring airbag 8 onto the buckling support member 2 radially inward from the periphery of the buckling support member 2, thereby further enhancing the stability of the connection between the air spring airbag 8 and the buckling support member 2.

[0045] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the air spring cover structure further includes a snap assembly 7 for snapping the cover 1 with the buckling support 2. The snap assembly 7 includes a snap-in member 71 provided on the buckling support 2 and a slot structure 72 for cooperating with and holding the snap-in member 71. The slot structure 72 is provided on the cover 1. When in use, the split cover 1 and the buckling support 2 can be connected as one by only holding and holding the snap-in member 71 on the buckling support 2 in the slot structure 72 on the cover 1. The split cover 11 can be modularized to adapt to different products, thereby reducing costs.

[0046] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the slot structure 72 is a through hole provided on the cover plate 11, and the clamping member 71 includes an elastic arm 711 provided on the buckling support member 2, a barb 712 provided at one end of the elastic arm 711 away from the buckling support member 2, and a plug-in positioning member 713 provided on the buckling support member 2 for matching and inserting into the through hole. After the elastic arm 711 passes through the through hole, the barb 712 can be pushed radially outward toward the through hole, so that the barb 712 is hooked with the cover plate 11, and the split cover body 1 and the buckling support member 2 can be connected as one. When the cover body 1 and the buckling support member 2 need to be disassembled, it is only necessary to bend the elastic arm 711 to drive the barb 712 to move radially inward toward the through hole by an appropriate distance, so that the barb 712 is separated from the cover plate 11, and the cover body 1 and the buckling support member 2 can be easily disassembled and separated.

[0047] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, a positioning protrusion 25 is provided on the annular protrusion 21, and a positioning groove 16 for cooperating with the positioning protrusion 25 is provided on the cover plate 11. Through the cooperation between the positioning protrusion 25 and the positioning groove 16, the positioning effect of the cover plate 11 and the buckling support member 2 can be enhanced.

[0048] Please refer to Figure 1 , Figure 4 and Figure 5In some embodiments, the central area of ​​the cover plate 11 is recessed inward to form a recessed groove 17, so that the central area inside the cover plate 11 forms a positioning boss 13, and the edge of the first outer flange 15 extends upward along the axial direction of the annular edge 12 to form a reinforcement ring 18, and the outer periphery of the annular edge 12 is connected to the reinforcement ring 18 through a plurality of connecting ribs 19, which not only improves the overall rigidity strength of the air spring airbag 8 cover plate 11 structure, but also effectively reduces the overall weight of the air spring airbag 8 cover plate 11 structure, and saves the material of the air spring airbag 8 cover plate 11 structure to reduce the cost.

[0049] The embodiment of the utility model also provides an air spring assembly, which includes the air spring cover structure provided in any of the above embodiments. Since the air spring assembly has all the technical features of the air spring cover structure provided in any of the above embodiments, it has the same technical effects as the above air spring cover structure.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air spring cover structure, characterized in that: include: The cover body comprises a cover plate and an annular peripheral edge connected to the cover plate, wherein a positioning boss is protruding from the central area of ​​the inner side of the cover plate; A buckling support member, used for being sleeved by the end opening of the air spring airbag, and the buckling support member is detachably installed in the cover body; as well as A buckling ring, which is sleeved on the buckling support, and is used to buckle the air spring airbag on the buckling support to shape the air spring airbag; Among them, the buckling support is respectively provided with an annular protrusion for engaging in the annular groove inside the cover body and a positioning cavity for the positioning boss to be embedded, and there is an avoidance gap between the inner circumferential surface of the annular edge and the outer circumferential surface of the corresponding end of the air spring airbag. The annular edge is provided with a first outer flange for resisting the shoulder of the air spring airbag, and the surface of the first outer flange is an arc surface.

2. The air spring cover structure according to claim 1, characterized in that: The buckling support is provided with a second outer flange for contacting the air spring airbag, and the surface of the second outer flange is an arc surface.

3. The air spring cover structure according to claim 1, characterized in that: The buckling support is provided with an anti-slip structure on a sleeve surface for sleeve-fitting the end opening of the air spring airbag.

4. The air spring cover structure according to claim 3, characterized in that: The anti-skid structure is an anti-skid thread, an anti-skid serration, an anti-skid pattern or an anti-skid coating.

5. The air spring cover structure according to claim 1, characterized in that: The air spring cover structure also includes a support ring for expanding the buckling support member, and the support ring is supported inside the buckling support member.

6. The air spring cover structure according to claim 1, characterized in that: The air spring cover structure also includes a snap assembly for snap-connecting the cover body to the buckling support, the snap assembly includes a clamping piece provided on the buckling support and a slot structure for cooperating to clamp and fix the clamping piece, and the slot structure is provided on the cover body.

7. The air spring cover structure according to claim 6, characterized in that: The slot structure is a through hole provided on the cover plate, and the clamping part includes an elastic arm provided on the buckling support and a barb provided at one end of the elastic arm away from the buckling support. After the elastic arm passes through the through hole, the barb can be pushed radially outward toward the through hole to make the barb hooked with the cover plate.

8. The air spring cover structure according to claim 1, characterized in that: A positioning protrusion is provided on the annular protrusion, and a positioning groove for cooperating and clamping with the positioning protrusion is provided on the cover plate.

9. The air spring cover structure according to any one of claims 1 to 8, characterized in that: The central area of ​​the cover plate is recessed inward so that a positioning boss is formed in the central area inside the cover plate; the edge of the first outer flange extends upward along the axial direction of the annular edge to form a reinforcement ring, and the outer periphery of the annular edge is connected to the reinforcement ring through a plurality of connecting ribs.

10. An air spring assembly, characterized in that: The invention comprises an air spring cover structure as claimed in any one of claims 1 to 9.

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