Air spring and vehicle

Abstract

The utility model relates to an air spring and a vehicle, the air spring comprises an upper cover and a lower cover, the upper cover comprises a main body part and a connecting part connected to the lower side of the main body part, the main body part is made of a metal material and used for being connected with a vehicle body, the connecting part and the lower cover are made of plastic, and the connecting part is connected with the lower side of the main body part. And the main body part is connected with the lower cover through the connecting part. The air spring can solve the problems of breakage, air leakage and the like caused by insufficient strength when a vehicle body is connected.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and in particular, to an air spring and a vehicle. Background Art

[0002] Air springs are used between the car body and bogie in rail transit to transfer the vehicle's load and torque, etc., and absorb the vibration caused by the vehicle's movement. Under the elastic force of the air spring, they provide restoring force for the vehicle, so that the car body and bogie do not move in the vertical and horizontal directions with the movement of the vehicle, which has an important impact on the smoothness and comfort of the vehicle's operation.

[0003] The upper cover of the air spring is connected to the vehicle body, and the lower cover of the air spring is connected to the bogie to ensure that the air spring does not move vertically and horizontally with the movement of the vehicle. However, in order to ensure the strength requirements of the air spring chamber and avoid air leakage and rupture of the air spring, the connection strength requirements of the upper cover of the air spring are usually relatively high. In the related art, when the structure is connected through the upper cover of the air spring, it is easy to cause leakage and rupture due to insufficient strength. Utility Model Content

[0004] The purpose of the present disclosure is to provide an air spring and a vehicle, wherein the air spring can solve the problems of cracking and air leakage caused by insufficient strength when connected to a vehicle body.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides an air spring, which includes: an upper cover and a lower cover, the upper cover includes a main body and a connecting part connected to the lower side of the main body, the main body is made of metal material and is used to connect to a vehicle body, the connecting part and the lower cover are made of plastic, wherein the main body is connected to the lower cover through the connecting part.

[0006] Optionally, the main body portion and the connecting portion are integrally formed.

[0007] Optionally, the connecting portion is welded to the lower cover.

[0008] Optionally, the main body has an annular hook, and the hook is used to be engaged with the buffer component.

[0009] Optionally, the upper cover and the lower cover together enclose a first chamber and a second chamber that are separated, the first chamber and the second chamber are connected through a connecting hole, a switch valve is provided at the connecting hole, and the switch valve is used to selectively open the connecting hole.

[0010] Optionally, the connecting portion comprises a first annular baffle and a second annular baffle arranged at intervals, and the second annular baffle is arranged on the outside of the first annular baffle;

[0011] The lower cover comprises a third annular partition plate and a fourth annular partition plate which are arranged at intervals, and the fourth annular partition plate is arranged on the third annular partition plate;

[0012] The first annular partition is connected to the third annular partition, and the second annular partition is connected to the fourth annular partition, wherein the first annular partition, the third annular partition and the main body form the first chamber, and the first annular partition, the second annular partition, the third annular partition, the fourth annular partition and the main body form the second chamber.

[0013] Optionally, a plurality of first partition plates arranged at circumferential intervals are connected between the first annular partition plate and the second annular partition plate, a plurality of second partition plates arranged at circumferential intervals are connected between the third annular partition plate and the fourth annular partition plate, and the plurality of first partition plates and the plurality of second partition plates are connected one-to-one to divide the second chamber into a plurality of sub-chambers, wherein each of the first partition plates is formed with a first connecting groove connecting two adjacent sub-chambers.

[0014] Optionally, a second communicating groove communicating with two adjacent sub-chambers is formed on each of the second dividing plates, and the second communicating groove is also communicated with the corresponding first communicating groove.

[0015] Optionally, the main body includes a fifth annular partition and a sixth annular partition arranged at intervals, and the sixth annular partition is arranged on the outside of the fifth annular partition; the fifth annular partition is connected to the first annular partition, and the sixth annular partition is connected to the second annular partition.

[0016] Optionally, a plurality of third partition plates spaced circumferentially apart are connected between the fifth annular partition plate and the sixth annular partition plate, the plurality of third partition plates are connected one-to-one with the plurality of second partition plates, and each of the third partition plates is formed with a third connecting groove connected with the corresponding first connecting groove.

[0017] According to a second aspect of the present disclosure, a vehicle is provided, comprising the air spring as described above.

[0018] Through the above technical scheme, in the air spring disclosed in the present invention, the main body is the main structural part of the upper cover and is made of metal material; the connecting part is the secondary structural part of the upper cover and is made of plastic. Therefore, the upper cover can be understood as being mostly made of metal material and a small part of plastic. In this way, the upper cover disclosed in the present invention can be understood as a "metal part wrapped with plastic part" component. The advantage of such a setting is that the overall strength of the upper cover can be improved. When the upper cover is connected to the vehicle body through the main body made of metal material, the connection strength between the air spring and the vehicle body can be increased. In addition, the upper cover is connected to the lower cover through the connecting part to achieve the connection between the upper cover and the lower cover, meet the sealing requirements, reduce the processing difficulty of the air spring, and improve the processing efficiency. When the chamber of the air spring is filled with compressed air and the stiffness of the air spring changes, the main body made of metal material enables the upper cover to withstand greater pressure under the action of air pressure, avoiding leakage or rupture, and solving the problems of rupture and leakage caused by insufficient strength when the air spring is connected to the vehicle body.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0021] Figure 1 is a front cross-sectional view of an air spring provided by an embodiment of the present disclosure;

[0022] Figure 2 is a schematic diagram of the three-dimensional structure of an air spring provided in an embodiment of the present disclosure;

[0023] Figure 3 is a cross-sectional view of an exploded perspective of an air spring provided by an embodiment of the present disclosure in an inverted state;

[0024] Figure 4 is a structural schematic diagram of an upper cover provided by an embodiment of the present disclosure in an inverted state;

[0025] Figure 5 It is a schematic diagram of the structure of the lower cover provided in an embodiment of the present disclosure.

[0026] Description of Reference Numerals

[0027] 1-upper cover, 11-main body, 111-hook, 112-fifth annular partition, 113-sixth annular partition, 114-third partition plate, 1141-third connecting groove, 12-connecting part, 121-first annular partition, 122-second annular partition, 123-first partition plate, 1231-first connecting groove, 2-lower cover, 21-third annular partition, 22-fourth annular partition, 23-second partition plate, 231-second connecting groove, 3-first chamber, 4-second chamber, 5-switch valve. DETAILED DESCRIPTION

[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0029] In the present disclosure, unless otherwise specified, the directional words "inside" and "outside" used refer to the "inside" and "outside" relative to the contour of the corresponding component itself. In addition, the use of words such as "first" and "second" is intended to distinguish different components and does not have order and importance. In addition, when referring to the drawings in the following description, the same symbols in different drawings represent the same elements. It should be understood by those skilled in the art that the above definitions are only used to explain and illustrate the present disclosure and should not be understood as limitations on the present disclosure.

[0030] According to an exemplary embodiment of the present disclosure, referring to Figures 1 to 5 As shown, an air spring is provided, which includes: an upper cover 1 and a lower cover 2, the upper cover 1 includes a main body 11 and a connecting portion 12 connected to the lower side of the main body 11, the main body 11 is made of metal material and is used to connect to the vehicle body, the connecting portion 12 and the lower cover 2 are made of plastic, wherein the main body 11 is connected to the lower cover 2 through the connecting portion 12.

[0031] Through the above technical solution, in the air spring disclosed in the present invention, the main body 11 is the main structural part of the upper cover 1 and is made of metal material; the connecting part 12 is the secondary structural part of the upper cover 1 and is made of plastic. Therefore, the upper cover 1 can be understood as being mostly made of metal material and a small part of plastic. In this way, the upper cover 1 disclosed in the present invention can be understood as a "metal part wrapped in plastic" component. The advantage of such a setting is that the overall strength of the upper cover 1 can be improved. When the upper cover 1 is connected to the vehicle body through the main body 11 made of metal material, the connection strength between the air spring and the vehicle body can be increased. In addition, the upper cover 1 is connected to the lower cover 2 through the connecting part 12, so as to realize the connection between the upper cover 1 and the lower cover 2, meet the sealing requirements, reduce the processing difficulty of the air spring, and improve the processing efficiency. When compressed air is filled into the chamber of the air spring and the stiffness of the air spring changes, the main body 11 made of metal material enables the upper cover 1 to withstand greater pressure under the action of air pressure, avoiding leakage or rupture, and solving the problems of rupture and leakage caused by insufficient strength when the air spring is connected to the vehicle body.

[0032] In some embodiments of the present disclosure, reference Figure 1 and Figure 2 As shown, the main body 11 and the connecting portion 12 can be integrally formed. In this way, it is possible to avoid the problem of air leakage caused by the gap that may be generated when the main body 11 and the connecting portion 12 are made into disassembled parts for connection, that is, the integral molding of the main body 11 and the connecting portion 12 can avoid the generation of a gap between the two, thereby meeting the sealing requirements of the upper cover 1 and ensuring the sealing performance of the air spring. In addition, the integral molding method effectively improves production efficiency and reduces manufacturing costs. In some embodiments, the main body 11 and the connecting portion 12 can be integrally formed by integral injection molding to avoid leakage of gas in the air spring.

[0033] In some embodiments of the present disclosure, reference Figure 1 and Figure 2 As shown, the connection part 12 and the lower cover 2 can be welded. In this way, the connection by direct welding can meet the requirements of sealing performance between the upper cover 1 and the lower cover 2, and avoid the generation of gaps, etc. In some embodiments, the lower cover 2 and the connection part 12 can be connected by hot air welding, avoiding the situation in which the traditional welding method generates tiny particles at the welding point and affects the welding strength, and further meeting the requirements of the air spring for connection strength and sealing performance.

[0034] In some embodiments of the present disclosure, reference Figure 1 and Figure 3As shown, the main body 11 has an annular hook 111, and the hook 111 is used to engage with the buffer. In this way, since the main body 11 is made of metal material, the structural strength of the hook 111 is relatively high. A buckle structure connection is provided in the middle of the upper cover 1 and the lower cover 2 so that the upper cover 1 and the lower cover 2 can be correspondingly buckled. A buffer is provided on the hook 111 structure between the upper cover 1 and the lower cover 2 to provide a buffering effect when the buckle structure is engaged and to prevent the hook 111 structure from being worn. This arrangement is well known to those skilled in the art. In some embodiments, the buffer is provided as an annular member made of silicone material to cooperate with the annular hook 111, so that the hook 111 can fix the buffer.

[0035] In some embodiments of the present disclosure, reference Figure 1 and Figure 5 As shown, the upper cover 1 and the lower cover 2 together enclose a first chamber 3 and a second chamber 4 separated from each other. The first chamber 3 and the second chamber 4 are connected through a connecting hole, and a switch valve 5 is provided at the connecting hole. The switch valve 5 is used to selectively open the connecting hole. The volume of compressed air entering the air spring is controlled by controlling the connection between the first chamber 3 and the second chamber 4. When the switch valve 5 is closed and the first chamber 3 and the second chamber 4 are not connected, the compressed air only enters the first chamber 3. At this time, the stiffness of the air spring is relatively large. When the switch valve 5 is opened, the first chamber 3 and the second chamber 4 are connected, so that the compressed air can enter the second chamber 4 from the first chamber 3. At this time, the stiffness of the air spring is reduced. Therefore, the volume variability in the air spring is achieved by setting the switch valve 5, and the stiffness is adjusted to adapt to different conditions.

[0036] In some embodiments of the present disclosure, reference Figures 3 to 5 As shown, the connecting portion 12 includes a first annular partition 121 and a second annular partition 122 arranged at intervals, and the second annular partition 122 is arranged on the outer side of the first annular partition 121; the lower cover 2 includes a third annular partition 21 and a fourth annular partition 22 arranged at intervals, and the fourth annular partition 22 is arranged on the outer side of the third annular partition 21; the first annular partition 121 is connected to the third annular partition 21, and the second annular partition is connected to the fourth annular partition 22, wherein the first annular partition 121, the third annular partition 21 and the main body 11 form a first chamber 3, and the first annular partition 121, the second annular partition 122, the third annular partition, the fourth annular partition 22 and the main body 11 form a second chamber 4. In this way, when the connecting part 12 and the lower cover 2 are connected, the first annular partition 121 can be connected to the third annular partition 21, and the second annular partition 122 can be connected to the fourth annular partition 22, thereby realizing the separation of the first chamber 3 and the second chamber 4, so that when the upper cover 1 and the lower cover 2 are buckled, the first chamber 3 and the second chamber 4 can be directly formed, thereby improving the processing efficiency of the air spring.

[0037] In some embodiments of the present disclosure, reference Figures 3 to 5 As shown, a plurality of first partition plates 123 arranged at intervals in the circumferential direction are connected between the first annular partition plate 121 and the second annular partition plate 122, and a plurality of second partition plates 23 arranged at intervals in the circumferential direction are connected between the third annular partition plate 21 and the fourth annular partition plate 22. The plurality of first partition plates 123 are connected to the plurality of second partition plates 23 in a one-to-one correspondence to divide the second chamber 4 into a plurality of sub-chambers, wherein a first connecting groove 1231 connecting two adjacent sub-chambers is formed on each first partition plate 123. By providing a plurality of first partition plates 123 and second partition plates 23, while connecting the first annular partition plate 121 and the second annular partition plate 122, the third annular partition plate 21 and the fourth annular partition plate 22, the first connecting groove 1231 is provided to keep the second chamber 4 unobstructed, so that the compressed air can fill the second chamber 4.

[0038] In some embodiments of the present disclosure, reference Figures 3 to 5 As shown, each second partition plate 23 is formed with a second connecting groove 231 connecting two adjacent sub-chambers, and the second connecting groove 231 is also connected to the corresponding first connecting groove 1231. In this way, when the lower cover 2 is connected to the connecting portion 12, the first connecting groove 1231 and the second connecting groove 231 corresponding in position are simultaneously provided, which can increase the flow area of ​​the compressed air in the second chamber 4 through the first partition plate 123 and the second partition plate 23 while ensuring the structural strength of the lower cover 2 and the connecting portion 12, thereby increasing the flow speed of the compressed air and thus improving the working efficiency of the air spring.

[0039] In some embodiments of the present disclosure, reference Figures 3 to 5 As shown, the main body 11 includes a fifth annular partition 112 and a sixth annular partition 113 which are arranged at intervals, and the sixth annular partition 113 is arranged on the outside of the fifth annular partition 112; the fifth annular partition 112 is connected to the first annular partition 121, and the sixth annular partition 113 is connected to the second annular partition 122. In this way, when the upper cover 1 is connected to the lower cover 2, it is ensured that the first chamber 3 and the second chamber 4 can be separated, and no air leakage will occur through the main body 11. And when the upper cover 1 is connected to the lower cover 2, the first chamber 3 and the second chamber 4 are directly separated and sealed, thereby improving the production efficiency of the air spring.

[0040] In some embodiments of the present disclosure, reference Figures 3 to 5As shown, a plurality of third partition plates 114 spaced apart in the circumferential direction are connected between the fifth annular partition plate 112 and the sixth annular partition plate 113. The plurality of third partition plates 114 are connected to the plurality of first partition plates 123 in a one-to-one correspondence, and a third connecting groove 1141 connected to the corresponding first connecting groove 1231 is formed on each third partition plate 114. In this way, the third partition plates 114 serve as reinforcing ribs to strengthen the structural strength of the main body 11, and on the premise of ensuring the structural strength of the connecting portion 12 and the main body 11, the flow area of ​​the compressed air in the second chamber 4 through the second partition plate 23 and the third partition plate 114 is increased, thereby improving the flow speed of the compressed air.

[0041] In some embodiments, reference Figures 3 to 5 As shown, the first connecting groove 1231 , the second connecting groove 231 , and the third connecting groove 1141 together form a connecting hole, which increases the flow area of ​​the compressed air while reducing the processing difficulty.

[0042] According to a second aspect of the present disclosure, a vehicle is provided, comprising the air spring as described above. The vehicle has all the beneficial effects of the air spring as described above, which will not be described in detail in the present disclosure.

[0043] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0044] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0045] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An air spring, characterized in that: The air spring comprises: an upper cover and a lower cover, the upper cover comprises a main body and a connecting portion connected to the lower side of the main body, the main body is made of metal material and is used to connect to the vehicle body, the connecting portion and the lower cover are made of plastic, wherein the main body is connected to the lower cover via the connecting portion.

2. The air spring according to claim 1, characterized in that: The main body and the connecting portion are integrally formed.

3. The air spring according to claim 1, characterized in that: The connecting portion is welded to the lower cover.

4. The air spring according to claim 1, characterized in that: The main body has an annular hook, and the hook is used for engaging with the buffer.

5. The air spring according to claim 1, characterized in that: The upper cover and the lower cover together form a first chamber and a second chamber separated from each other. The first chamber and the second chamber are connected through a connecting hole. A switch valve is provided at the connecting hole to selectively open the connecting hole.

6. The air spring according to claim 1, characterized in that: The connecting portion comprises a first annular partition plate and a second annular partition plate which are arranged at intervals, and the second annular partition plate is arranged on the outer side of the first annular partition plate; The lower cover comprises a third annular partition plate and a fourth annular partition plate which are arranged at intervals, and the fourth annular partition plate is arranged on the outer side of the third annular partition plate; The first annular partition is connected to the third annular partition, and the second annular partition is connected to the fourth annular partition, wherein the first annular partition, the third annular partition and the main body form a first chamber, and the first annular partition, the second annular partition, the third annular partition, the fourth annular partition and the main body form a second chamber.

7. The air spring according to claim 6, characterized in that: A plurality of first partition plates arranged at circumferential intervals are connected between the first annular partition plate and the second annular partition plate, and a plurality of second partition plates arranged at circumferential intervals are connected between the third annular partition plate and the fourth annular partition plate. The plurality of first partition plates and the plurality of second partition plates are connected one-to-one to divide the second chamber into a plurality of sub-chambers, wherein each of the first partition plates is formed with a first connecting groove connecting two adjacent sub-chambers.

8. The air spring according to claim 7, characterized in that: A second communicating groove communicating with two adjacent sub-chambers is formed on each of the second dividing plates, and the second communicating groove is also communicated with the corresponding first communicating groove.

9. The air spring according to claim 8, characterized in that: The main body includes a fifth annular partition and a sixth annular partition arranged at intervals, and the sixth annular partition is arranged on the outside of the fifth annular partition; the fifth annular partition is connected to the first annular partition, and the sixth annular partition is connected to the second annular partition.

10. The air spring according to claim 9, characterized in that A plurality of third partition plates spaced circumferentially apart are connected between the fifth annular partition plate and the sixth annular partition plate. The plurality of third partition plates are connected one-to-one with the plurality of second partition plates. A third connecting groove connected with the corresponding first connecting groove is formed on each of the third partition plates.

11. A vehicle, characterized in that: The air spring comprises the air spring described in any one of claims 1 to 10.

Images