End cover structure of air spring, air spring and vehicle thereof

Abstract

The utility model relates to an end cover structure of an air spring, the air spring and a vehicle, the end cover structure comprises an end cover body and a limiting structure, the end cover body is provided with an upper end face and a lower end face which are oppositely arranged, and the lower end face of the end cover body is used for being connected with an air bag of the air spring; the limiting structure is connected to the upper end face of the end cover body, and the area of the cross section of the limiting structure is gradually reduced in the direction from the upper end face of the end cover body to the lower end face of the end cover body. According to the end cover structure of the air spring, the air spring and the vehicle, the riding comfort of a user is improved, and meanwhile installation of the end cover structure is facilitated.

Description

Technical Field

[0001] This application belongs to the technical field of automotive air spring equipment, and particularly relates to an end cover structure of an air spring, an air spring and a vehicle thereof. Background Art

[0002] An automotive air spring uses air as an elastic medium and utilizes the compression elasticity of the gas to achieve the function of a spring, having functions such as buffering, vibration damping, and load bearing. The air spring has excellent elastic characteristics and has many advantages compared with ordinary steel springs, so its application range is very wide.

[0003] However, when the vehicle passes through straight twist roads, bend twist roads, and downhill roads at normal vehicle speeds, the existing end cover structure of the automotive air spring will rub and friction with the body mating surface, thus generating extremely loud abnormal noises, seriously affecting the riding comfort of users; in addition, there is also a problem of inconvenient installation when the end cover structure is connected to the body. Summary of the Utility Model

[0004] The purpose of this application is to provide an end cover structure of an air spring, an air spring and a vehicle thereof, which can improve the riding comfort of users while facilitating the installation of the end cover structure.

[0005] The first aspect of this application discloses an end cover structure of an air spring, including: an end cover body and a limiting structure. The end cover body has an upper end face and a lower end face arranged oppositely. The lower end face of the end cover body is used to connect with the airbag of the air spring; the limiting structure is connected to the upper end face of the end cover body, and the cross-sectional area of the limiting structure gradually decreases from the upper end face of the end cover body towards the lower end face of the end cover body.

[0006] In an exemplary embodiment of this application, the end cover structure includes a plurality of the limiting structures, and the plurality of the limiting structures are arranged at intervals and are all connected to the upper end face of the end cover body.

[0007] In an exemplary embodiment of this application, the limiting structure includes a columnar part and a protruding part. The columnar part and the protruding part are both connected to the upper end face of the end cover body. The protruding part is connected to the columnar part and protrudes along the radial direction of the columnar part.

[0008] In an exemplary embodiment of this application, the limiting structure includes a plurality of the protruding parts. The plurality of the protruding parts are arranged at intervals around the columnar part and are all connected to the columnar part, and the included angle between adjacent two of the protruding parts is equal.

[0009] In an exemplary embodiment of this application, the end cover body is provided with a plurality of grooves arranged at intervals, and the plurality of grooves are all arranged at intervals with the limiting structure.

[0010] In an exemplary embodiment of the present application, the end cap structure further includes a sealing portion, the sealing portion is connected to the lower end face of the end cap body, the sealing portion includes a first sealing section, an intermediate sealing section and a second sealing section, the first sealing section is connected to the lower end face of the end cap body, the intermediate sealing section is connected between the first sealing section and the second sealing section, and the cross-sectional area of the first sealing section and the cross-sectional area of the second sealing section are both larger than the cross-sectional area of the intermediate sealing section.

[0011] In an exemplary embodiment of the present application, the intermediate sealing section is provided with a plurality of sealing grooves, and the plurality of sealing grooves are arranged at intervals in the direction from the upper end face of the end cap body towards the lower end face of the end cap body.

[0012] In an exemplary embodiment of the present application, an air hole is provided on the outer peripheral side of the end cap body, one end of the air hole communicates with the outside of the end cap body, and the other end of the air hole communicates with the airbag of the air spring.

[0013] The second aspect of the present application discloses an air spring, including an airbag and the end cap structure as described above, and the airbag is connected to the end cap structure.

[0014] The third aspect of the present application discloses a vehicle, including a vehicle body and the air spring as described above, and the air spring is connected to the vehicle body.

[0015] The solution of the present application has the following beneficial effects:

[0016] In the embodiment of the present application, when the air spring is installed on a vehicle, the upper end face of the end cap body contacts the vehicle body, the limiting structure is located inside the vehicle body and is connected to the vehicle body, so that when the vehicle is under a lateral force condition, the limiting structure can play a lateral supporting role, reducing the probability of abnormal noise generated by the rubbing between the upper end face of the end cap structure and the vehicle body, thereby improving the riding comfort of users; at the same time, the cross-sectional area of the limiting structure gradually decreases in the direction from the upper end face of the end cap body towards the lower end face of the end cap body, and the limiting structure has a certain guiding and positioning effect on the installation of the end cap structure, so as to facilitate the installation of the end cap structure.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application. Obviously, the accompanying drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them, the accompanying drawings here are used to represent the inventive concept of this application and are not completely equivalent to the structure of the actual product protected by this application.

[0019] Figure 1 Fig. shows a schematic perspective view of the end cap structure in an embodiment of this application from one perspective.

[0020] Figure 2 Fig. shows a schematic perspective view of the end cap structure in an embodiment of this application from another perspective.

[0021] Explanation of reference numerals:

[0022] 1. End cap body; 101. Groove; 11. Upper end face; 12. Lower end face; 2. Limiting structure; 21. Cylindrical part; 22. Protruding part; 3. Sealing part; 301. Sealing groove; 31. First sealing section; 32. Intermediate sealing section; 33. Second sealing section; 4. Air pipe. Detailed implementation manners

[0023] Now, example embodiments will be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art.

[0024] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of this application. However, those skilled in the art will realize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of this application.

[0025] The following further details this application in conjunction with the accompanying drawings and specific embodiments. It should be noted here that the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain this application and should not be construed as a limitation of this application.

[0026] AsFigures 1 to 2 As shown, this embodiment provides an end cap structure for an air spring, including: an end cap body 1 and a limiting structure 2. The end cap body 1 has an upper end face 11 and a lower end face 12 arranged oppositely. The lower end face 12 of the end cap body 1 is used to connect with the airbag of the air spring.

[0027] In this embodiment, the shape of the end cap body 1 is cylindrical. Of course, in other embodiments, the shape of the end cap body 1 can also be an elliptical cylinder, etc.

[0028] It should be understood that since the shape of the end cap body 1 is cylindrical, the shapes of the upper end face 11 and the lower end face 12 are both circular.

[0029] Furthermore, the limiting structure 2 is connected to the upper end face 11 of the end cap body 1, and the cross-sectional area of the limiting structure 2 gradually decreases from the upper end face 11 of the end cap body 1 towards the lower end face 12 of the end cap body 1.

[0030] In this embodiment, the shape of the limiting structure 2 is conical.

[0031] It should be understood that the shape of the limiting structure 2 being conical can be either a standard conical shape or an approximate conical shape.

[0032] In this embodiment, when the air spring is installed on a vehicle, the upper end face 11 of the end cap body 1 contacts the vehicle body. The limiting structure 2 is located inside the vehicle body and is connected to the vehicle body, so that when the vehicle is under the condition of receiving a lateral force, the limiting structure 2 can play a lateral supporting role, reducing the probability of abnormal noise generated by the rubbing between the upper end face 11 of the end cap structure and the vehicle body, thereby improving the riding comfort of users; at the same time, the cross-sectional area of the limiting structure 2 gradually decreases from the upper end face 11 of the end cap body 1 towards the lower end face 12 of the end cap body 1, and the limiting structure 2 has a certain guiding and positioning effect on the installation of the end cap structure, facilitating the installation of the end cap structure.

[0033] It should be understood that when the vehicle is driving on a curved and twisted road surface or a straight and twisted road surface, the vehicle may be subjected to a lateral torsional force, resulting in rubbing between the upper end face 11 of the end cap body 1 and the vehicle body, thereby generating abnormal noise.

[0034] In this embodiment, the vehicle body is provided with a limiting hole corresponding to and matching the limiting structure 2. The limiting structure 2 is located in the limiting hole and is connected to the hole wall of the limiting hole to ensure the connection between the end cap structure and the vehicle body.

[0035] It should be understood that the diameter of the limiting hole should be smaller than the maximum outer diameter of the limiting structure 2, ensuring that when the limiting structure 2 is installed into the vehicle body, it can have an interference fit with the limiting hole, thereby ensuring the stability of the connection between the end cover structure and the vehicle body; at the same time, the diameter of the limiting hole should be larger than the minimum outer diameter of the limiting structure 2, ensuring that the limiting structure 2 can be installed into the limiting hole of the vehicle body.

[0036] Combined with Figure 1 As shown, the end cover structure includes a plurality of limiting structures 2, and the plurality of limiting structures 2 are arranged at intervals and are all connected to the upper end surface 11 of the end cover body 1.

[0037] It should be understood that since the end cover structure includes a plurality of limiting structures 2, accordingly, the vehicle body needs to be provided with a corresponding number of limiting holes so that the limiting holes can be correspondingly and matingly connected with the limiting structures 2 to achieve the connection between the end cover structure and the vehicle body.

[0038] In this embodiment, the end cover structure includes two spaced-apart limiting structures 2, enabling the end cover structure to be stably embedded into the limiting holes of the vehicle body, preventing the end cover structure from rotating relative to the vehicle body, and thus avoiding abnormal noise caused by friction and rubbing between the upper end surface 11 and the vehicle body.

[0039] In addition, both of the two limiting structures 2 are located at the middle position of the end cover body 1, and the distances between the two limiting structures 2 and the center of the upper end surface 11 are equal, enabling the end cover structure to be evenly attached to the vehicle body, which is conducive to reducing the probability of rubbing between the end cover structure and the vehicle body under the condition that the vehicle is subjected to lateral force.

[0040] In this embodiment, combined with Figure 1 As shown, the limiting structure 2 includes a cylindrical part 21 and a protruding part 22. Both the cylindrical part 21 and the protruding part 22 are connected to the upper end surface 11 of the end cover body 1. The protruding part 22 is connected to the cylindrical part 21 and protrudes along the radial direction of the cylindrical part 21.

[0041] In this embodiment, the shape of the cylindrical part 21 is cylindrical, and the protruding part 22 is a right trapezoidal structure. The longer base of the protruding part 22 is connected to the cylindrical part 21, and the waist perpendicular to the base of the protruding part 22 is connected to the upper end surface 11 of the end cover body 1. The setting of the protruding part 22 makes the connection between the limiting structure 2 and the vehicle body more stable, reduces the probability of abnormal noise caused by friction and rubbing between the upper end surface 11 of the end cover body 1 and the vehicle body, and is conducive to improving the riding comfort of users.

[0042] It should be understood that the vehicle body needs to be provided with a corresponding installation groove according to the specific shape of the protruding part 22 to match the protruding part 22, so as to ensure the tightness of the connection between the end cover structure and the vehicle body and avoid abnormal noise caused by friction and rubbing.

[0043] Furthermore, the limiting structure 2 includes a plurality of protruding portions 22. The plurality of protruding portions 22 are arranged at intervals around the cylindrical portion 21 and are all connected to the cylindrical portion 21, and the included angle between two adjacent protruding portions 22 is equal.

[0044] In this embodiment, the limiting structure 2 includes six evenly distributed protruding portions 22, and the included angle between two adjacent protruding portions 22 is 60°. The six protruding portions 22 can better ensure the stability of the connection between the limiting structure 2 and the vehicle body, and greatly reduce the probability of abnormal noise generated when the air spring is installed in the vehicle, thereby improving the riding comfort of users.

[0045] In addition, the connection between the protruding portion 22 and the cylindrical portion 21, and the connection between the protruding portion 22 and the upper end surface 11 of the end cover body 1 are both transitioned by arcs to avoid stress concentration at the connection, resulting in cracking at the connection between the protruding portion 22 and the cylindrical portion 21 and the connection between the protruding portion 22 and the end cover body 1, so as to ensure the integrity of the end cover structure.

[0046] Combined with Figure 1 As shown, the end cover body 1 is provided with a plurality of grooves 101 spaced apart from each other, and the plurality of grooves 101 are all spaced from the limiting structure 2.

[0047] In this embodiment, the upper end surface 11 of the end cover body 1 is provided with a plurality of grooves 101, and the plurality of grooves 101 are arranged around the center of the upper end surface 11. The plurality of grooves 101 can reduce the contact area between the upper end surface 11 of the end cover body 1 and the vehicle body. When the vehicle is subjected to a lateral force, the frictional force generated by the rubbing between the upper end surface 11 of the end cover body 1 and the vehicle body can be reduced, thereby reducing the probability of abnormal noise generated by the end cover structure.

[0048] In addition, providing the grooves 101 in the end cover body 1 can increase the strength of the end cover body 1, making the end cover body 1 not easily deformed, and avoiding the situation of poor flatness of the upper end surface 11 of the end cover body 1, resulting in abnormal noise; the grooves 101 also have the functions of reducing weight and cost, and are easy to implement in the production process.

[0049] In this embodiment, combined with Figure 2 As shown, the end cover structure further includes a sealing portion 3. The sealing portion 3 is connected to the lower end surface 12 of the end cover body 1, and the connection between the sealing portion 3 and the lower end surface 12 of the end cover body 1 is transitioned by an arc to avoid stress concentration at the connection, resulting in cracking at the connection between the sealing portion 3 and the end cover body 1, so as to ensure the integrity of the end cover structure.

[0050] In this embodiment, combined with Figure 2 As shown, the shape of the sealing portion 3 is cylindrical, and the sealing portion 3 is used to connect with the airbag of the air spring.

[0051] It should be understood that the shape of the sealing portion 3 can also be approximately cylindrical.

[0052] Furthermore, the sealing portion 3 includes a first sealing section 31, an intermediate sealing section 32, and a second sealing section 33. The first sealing section 31 is connected to the lower end surface 12 of the end cover body 1, the intermediate sealing section 32 is connected between the first sealing section 31 and the second sealing section 33, and the cross-sectional area of the first sealing section 31 and the cross-sectional area of the second sealing section 33 are both larger than the cross-sectional area of the intermediate sealing section 32.

[0053] In this embodiment, when the air spring bladder is sleeved on the sealing portion 3, the air spring bladder is sleeved on the intermediate sealing section 32. The cross-sectional area of the intermediate sealing section 32 is smaller than the cross-sectional area of the first sealing section 31 and the cross-sectional area of the second sealing section 33, so that the air spring bladder is not easily detached relative to the sealing portion 3, which is beneficial to improving the connection stability between the air spring bladder and the sealing portion 3.

[0054] It should be understood that when the air spring bladder is sleeved on the sealing portion 3, the air spring bladder needs to be tightly connected to the sealing portion 3 through a fixing member to prevent air leakage between the air spring bladder and the sealing portion 3, which may cause abnormal noises.

[0055] For example, the fixing member can be an iron ring, a snap ring, etc.

[0056] In this embodiment, in combination with Figure 2 As shown, the intermediate sealing section 32 is provided with a plurality of uniformly distributed sealing grooves 301, and the plurality of sealing grooves 301 are arranged at intervals in the direction from the upper end surface 11 of the end cover body 1 towards the lower end surface 12 of the end cover body 1. When the air spring bladder is sleeved on the sealing portion 3, the fixing member can be tied to the bladder and snapped into the plurality of sealing grooves 301, so that the connection between the bladder and the sealing portion 3 can be made tighter, which is beneficial to improving the sealing performance between the bladder and the sealing portion 3 and avoiding abnormal noises caused by air leakage, thus affecting the riding comfort of users.

[0057] In this embodiment, air holes are provided on the outer peripheral side of the end cover body 1. One end of the air holes is communicated with the outside of the end cover body 1, and the other end is communicated with the air spring bladder.

[0058] It should be understood that the outer peripheral side of the end cover body 1 refers to the wall surface between the upper end surface 11 and the lower end surface 12 of the end cover body 1.

[0059] In this embodiment, in combination with Figure 1 and Figure 2As shown in the figure, the end cap structure further includes an air pipe 4. The sealing portion 3 is provided with a ventilation hole. One end of the air hole is communicated with the outside of the end cap body 1 through the air pipe 4, and the other end of the air hole is communicated with the airbag of the air spring through the ventilation hole of the sealing portion 3, so that the air spring can intake or exhaust air normally to ensure the normal operation of the air spring function.

[0060] This embodiment provides an air spring, which includes an airbag and the above-mentioned end cap structure, and the airbag is connected to the sealing portion 3 of the end cap structure.

[0061] This embodiment also provides a vehicle, which includes a vehicle body and the above-mentioned air spring, and the air spring is connected to the vehicle body.

[0062] In this application, unless otherwise clearly specified and limited, terms such as "assembly" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0063] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "a plurality" is two or more unless otherwise clearly and specifically defined. And the descriptions of terms such as "some embodiments" and "exemplarily" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application.

[0064] The schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0065] Although the embodiments of this application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and the description of this application shall fall within the scope covered by the patent of this application.

Claims

1. An end cover structure of an air spring, characterized in that: include: An end cover body, the end cover body having an upper end surface and a lower end surface arranged opposite to each other, the lower end surface of the end cover body being used for connecting with the air bag of the air spring; A limiting structure is connected to the upper end surface of the end cover body, and the cross-sectional area of ​​the limiting structure gradually decreases from the upper end surface of the end cover body toward the lower end surface of the end cover body.

2. The end cap structure according to claim 1, characterized in that: The end cover structure includes a plurality of the limiting structures, which are arranged at intervals from each other and are all connected to the upper end surface of the end cover body.

3. The end cap structure according to claim 1, characterized in that: The limiting structure includes a column part and a protruding part. The column part and the protruding part are both connected to the upper end surface of the end cover body. The protruding part is connected to the column part and is arranged to protrude radially along the column part.

4. The end cap structure according to claim 3, characterized in that: The limiting structure includes a plurality of protrusions, which are arranged around the column portion at intervals and are all connected to the column portion, and the angles between two adjacent protrusions are equal.

5. The end cap structure according to claim 1, characterized in that: The end cover body is provided with a plurality of grooves spaced apart from each other, and the plurality of grooves are spaced apart from the limiting structure.

6. The end cap structure according to claim 1, characterized in that: The end cover structure further comprises a sealing portion, wherein the sealing portion is connected to the lower end surface of the end cover body. The sealing portion includes a first sealing segment, an intermediate sealing segment and a second sealing segment, the first sealing segment is connected to the lower end surface of the end cover body, the intermediate sealing segment is connected between the first sealing segment and the second sealing segment, and the cross-sectional area of ​​the first sealing segment and the cross-sectional area of ​​the second sealing segment are both larger than the cross-sectional area of ​​the intermediate sealing segment.

7. The end cap structure according to claim 6, characterized in that: The middle sealing section is provided with a plurality of sealing grooves, and the plurality of sealing grooves are arranged in a spaced relationship from one another along the upper end surface of the end cover body toward the lower end surface of the end cover body.

8. The end cap structure according to claim 1, characterized in that: An air hole is provided on the outer peripheral side of the end cover body, one end of the air hole is communicated with the outside of the end cover body, and the other end of the air hole is communicated with the air bag of the air spring.

9. An air spring, characterized in that: It comprises an airbag and the end cover structure according to any one of claims 1 to 8, wherein the airbag is connected to the end cover structure.

10. A vehicle, characterized in that: The vehicle comprises a vehicle body and the air spring according to claim 9, wherein the air spring is connected to the vehicle body.

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