A dustproof exhaust structure of air spring, air spring, suspension and vehicle

Abstract

The utility model discloses a kind of air spring dustproof exhaust structure, air spring, suspension and vehicle, including mounting seat, at least one dustproof exhaust passage is opened in mounting seat, dustproof exhaust passage includes at least two intercommunicating air chambers, the input end and output end of dustproof exhaust passage are located on two air chambers respectively.In the utility model, by setting the output end and input end of dustproof exhaust passage on two air chambers, the air exchange path that can form circumferentially zigzag, avoid the direct exhaust of gas, make the proportion of dust and silt contained in gas that air spring absorbs and exhausts reduce, prevent dust and silt from being sucked into air spring interior, i.

Description

Technical Field

[0001] This utility model relates to the field of air spring technology, and more specifically to an air spring dustproof and exhaust structure, an air spring, a suspension and a vehicle. Background Technology

[0002] In recent years, with the development of the automotive industry and the popularization of new energy vehicles, the application scenarios of automotive air suspension systems have become increasingly widespread. Among them, the air spring is one of the key components of the air suspension, and the dust cover's role in the air spring is to protect the spring skin. It can prevent sand and gravel from puncturing the spring skin and prevent mud, dust, and other contaminants from entering the air spring's interior, thus preventing the spring skin from being worn down by contaminants during operation, causing air leakage and failure. At the same time, an exhaust channel must be provided between the dust cover and the air spring to ensure that no abnormal noises such as whistling occur.

[0003] Patent document CN114810900 A discloses a dustproof mechanism, air spring, suspension and vehicle. Although the gas path between its cavity and the external environment is tortuous during ventilation, changing the air source of the cavity ventilation can hinder the discharge of dust and dirt, the tortuous path actually means that the gas is directly discharged through the cavity 60, the first sub-chamber 15 and the second sub-chamber 16, and the dustproof effect is limited. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to improve the dustproof effect of the air spring exhaust structure.

[0005] This utility model solves the above-mentioned technical problems through the following technical means: a hollow spring dustproof exhaust structure, including a mounting base, on which at least one dustproof exhaust channel is provided, the dustproof exhaust channel including at least two interconnected air chambers, the input end and the output end of the dustproof exhaust channel being located on the two air chambers respectively.

[0006] As a preferred technical solution, the inlet of one air chamber is connected to the outlet of another air chamber, and the outlet of one air chamber and the inlet of another air chamber are staggered, forming the outlet and inlet of the dustproof exhaust channel respectively.

[0007] As a preferred technical solution, the air chamber includes an air chamber one and an air chamber two. An exhaust port one is provided on the air chamber one, and an exhaust port two is provided on the air chamber two. Both the exhaust port one and the exhaust port two are provided around the mounting base.

[0008] As a preferred technical solution, the plane where the input end of the dustproof exhaust channel is located is above the plane where the output end of the dustproof exhaust channel is located.

[0009] As a preferred technical solution, the mounting base is provided with at least one groove, and at least one reinforcing rib is provided in the groove. The plane where the reinforcing rib is located is above the plane where the end face of the mounting base is located.

[0010] As a preferred technical solution, the mounting base is connected to the vehicle body and forms at least two air chambers with the vehicle body.

[0011] As a preferred technical solution, a sealed cavity structure is formed between the dust cover of the air spring and the bladder skin at the bottom of the air spring. The input end of the dustproof exhaust channel is connected to the cavity, and the output end of the dustproof exhaust channel is connected to the external environment.

[0012] This utility model also provides an air spring, including the above-mentioned air spring dustproof and exhaust structure and a piston. One end of the piston is connected to the mounting base through the air spring bladder, and the outer side of the air spring piston is connected to the mounting base through a dust cover, which is located outside the bladder.

[0013] This utility model also provides a suspension, including the air spring as described above.

[0014] This utility model also provides an air spring, including the suspension as described above.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) In this utility model, by setting the output end and input end of the dustproof exhaust channel on the two air chambers, a circumferential tortuous ventilation path can be formed, avoiding the direct discharge of gas, reducing the proportion of dust and sand in the gas sucked and discharged by the air spring, preventing dust and sand from being sucked into the air spring, i.e., the sealed cavity formed by the bladder and the dust cover, thereby improving the durability of the air spring. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first cross-sectional structure of the mounting base provided in Embodiment 1 of this utility model;

[0018] Figure 2 Provided for Embodiment 1 of this utility model Figure 1 A partial enlarged structural diagram of A;

[0019] Figure 3 This is a schematic diagram of the second cross-sectional structure of the mounting base provided in Embodiment 1 of this utility model;

[0020] Figure 4 Provided for Embodiment 1 of this utility model Figure 3 A schematic diagram of the enlarged portion of structure B;

[0021] Figure 5This is a schematic diagram of the structure of exhaust port one and exhaust port two provided in Embodiment 1 of this utility model. In the figure, the dashed line represents the flow direction of gas inside the mounting base, and the solid line represents the flow direction of gas outside the mounting base.

[0022] Figure 6 This is a schematic diagram of the air chamber structure provided in Embodiment 1 of this utility model;

[0023] Figure 7 Provided for Embodiment 1 of this utility model Figure 6 A partially enlarged structural diagram of C is shown, with the arrows indicating the direction of gas flow between gas chamber one and gas chamber two.

[0024] Figure 8 This is a schematic diagram of the air spring structure from below, provided in Embodiment 1 of this utility model;

[0025] Reference numerals: 1. Dust cover; 2. Piston; 3. Mounting seat; 31. Air chamber one; 32. Air chamber two; 33. Reinforcing rib; 34. Exhaust port one; 35. Exhaust port two; 4. Body; 5. Airbag. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example 1

[0028] See Figure 1 , Figure 3 An air spring dustproof exhaust structure includes a mounting base 3, which is installed at the bottom of the air spring. The mounting base 3 has at least one dustproof exhaust channel, which has at least two adjacent and interconnected air chambers. The two ends of the dustproof exhaust channel are respectively connected to the external environment and the sealed cavity formed by the air spring bladder 5 and the dust cover 1. The inlet of one air chamber is connected to the outlet of the other air chamber, so that the two air chambers are interconnected. The outlet of one air chamber and the inlet of the other air chamber are staggered and form the outlet and inlet of the dustproof exhaust channel when it exhausts. By staggering the outlet and inlet of the dustproof exhaust channel on the two air chambers, a circumferentially tortuous ventilation path can be formed, avoiding direct exhaust of gas. This reduces the proportion of dust and sand in the gas sucked up and discharged by the air spring, preventing dust and sand from being sucked into the air spring, i.e., the sealed cavity formed by the bladder 5 and the dust cover 1, thereby improving the durability of the air spring.

[0029] See Figure 2 , Figure 4 In this embodiment, the two air chambers are air chamber one 31 and air chamber two 32. Air chamber one 31 is provided with an exhaust port one 34, which is the input end. Air chamber two 32 is provided with an exhaust port two 35, which is the output end. Both exhaust ports one 34 and exhaust ports two 35 are located around the mounting base 3. The dustproof exhaust channel is connected to the sealed cavity formed by the air spring bladder 5 and the dust cover 1 through exhaust port one 34. The dustproof exhaust channel is connected to the external environment through exhaust port two 35. The plane where exhaust port one 34 is located is above the plane where exhaust port two 35 is located.

[0030] See Figure 1 In this embodiment, the air spring includes a dust cover 1, a piston 2, and a bladder 5. One vertical end of the piston 2 is connected to the mounting base 3 via the bladder 5, and the outer side of the piston 2 is connected to the mounting base 3 via the dust cover 1. One end of the dust cover 1 is fixedly connected to the outer wall of the piston 2. In this embodiment, the fixing method is an interference fit, but other existing fixing methods are also possible. The other end of the dust cover 1 is fixedly connected to the circumferential connecting platform of the mounting base 3. In this embodiment, the fixing method is an interference fit, but other existing fixing methods are also possible. Both the upper and lower ends of the dust cover 1 are wrapped around the outer side of the bladder 5, thereby forming a sealed cavity structure between the bladder 5 and the dust cover 1.

[0031] See Figure 5 , Figure 6 At least one groove is provided at the end of the mounting base 3 away from the piston 2. A reinforcing rib 33 is fixedly connected to the inner wall of the groove. The bottom plane of the reinforcing rib 33 is located above the plane of the end of the mounting base 3 away from the piston 2. The reinforcing rib 33 divides the groove into two sub-grooves.

[0032] In this embodiment, after the mounting seat 3 is connected to the vehicle body 4, the two sub-grooves respectively enclose the vehicle body 4 to form a sealed air chamber 1 31 and air chamber 2 32. Since the reinforcing rib 33 is not flush with the end of the mounting seat 3 away from the piston 2, there is a gap between the reinforcing rib 33 and the vehicle body 4, forming a channel connecting air chamber 1 31 and air chamber 2 32. One end of the channel is the output port of air chamber 1 31, and the other end of the channel is the input port of air chamber 2 32.

[0033] See Figure 8 The mounting base 3 is provided with a positioning boss and a positioning post, which are used to position the vehicle body 4. In this embodiment, the vehicle body 4 is a horizontal plane, which can ensure the sealing between the vehicle body 4 and the mounting base 3, thereby ensuring the sealing of air chamber 1 31 and air chamber 2 32.

[0034] It should be noted that in this embodiment, three or more air chambers can also be set. Taking three air chambers as an example, they are air chamber 1 31, air chamber 2 32 and air chamber 3 respectively. Air chamber 3 is located between air chamber 1 31 and air chamber 2 32 and is connected to air chamber 1 31 and air chamber 2 32. The input end and output end of the exhaust channel are respectively set on air chamber 1 31 and air chamber 2 32. Air chamber 3 is only connected to air chamber 1 31 and air chamber 2 32, which extends the circumferential air guiding path and further improves the dustproof effect.

[0035] In this embodiment, taking the setting of eight dustproof exhaust channels as an example, the eight dustproof exhaust channels are distributed at equal angles with the axis of the mounting base 3 as the center. Of course, other numbers of dustproof exhaust channels can also be set according to actual production, such as two to seven, nine, etc. The eight dustproof exhaust channels are arranged adjacent to each other in sequence. Of course, they can also be arranged non-adjacently, with a certain distance left between adjacent dustproof exhaust channels.

[0036] Working principle: See Figure 5 , Figure 7 When the air spring is working, the piston 2 moves up and down, which in turn drives the bladder 5 and the dust cover 1 to move. The dust cover 1 thus extends and retracts in the vertical direction, which causes the volume of the sealed cavity between the dust cover 1 and the bladder 5 to change. When the volume of the cavity increases, the cavity needs to exhaust air, and when the volume of the cavity decreases, the cavity needs to draw in air. The gas between the dust cover 1 and the bladder 5 enters the air chamber 31 and the air chamber 32 through the exhaust port 34, and is output to the outside through the exhaust port 35.

[0037] Example 2

[0038] The difference between this embodiment and Embodiment 1 is that this embodiment provides an air spring that includes the air spring exhaust and dust prevention structure in Embodiment 1.

[0039] Example 3

[0040] The difference between this embodiment and embodiment 2 is that this embodiment provides a suspension that includes the air springs in embodiment 2.

[0041] Example 4

[0042] The difference between this embodiment and embodiment 3 is that this embodiment provides a vehicle that includes the suspension of embodiment 3.

[0043] It should be noted that Embodiments 2, 3, and 4 all include the air spring dustproof and exhaust structure in Embodiment 1, as well as the technical effects of Embodiment 1, so they will not be described again.

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hollow spring dustproof and exhaust structure, comprising a mounting base, characterized in that, The mounting base is provided with at least one dustproof exhaust channel, which includes at least two interconnected air chambers. The input and output ends of the dustproof exhaust channel are located on the two air chambers respectively.

2. The air spring dustproof and exhaust structure according to claim 1, characterized in that, The inlet of one air chamber is connected to the outlet of another air chamber. The outlet of one air chamber and the inlet of another air chamber are staggered and form the outlet and inlet of the dustproof exhaust channel, respectively.

3. The air spring dustproof and exhaust structure according to claim 1, characterized in that, The air chamber includes air chamber one and air chamber two. Air chamber one has an exhaust port one, and air chamber two has an exhaust port two. Both exhaust ports one and exhaust ports two are located around the mounting base.

4. The air spring dustproof and exhaust structure according to claim 1, characterized in that, The plane at the input end of the dustproof exhaust duct is located above the plane at the output end of the dustproof exhaust duct.

5. The air spring dustproof and exhaust structure according to claim 1, characterized in that, The mounting base has at least one groove, and at least one reinforcing rib is provided in the groove. The plane of the reinforcing rib is above the plane of the end face of the mounting base.

6. The air spring dustproof and exhaust structure according to claim 1, characterized in that, The mounting bracket is connected to the vehicle body and encloses the vehicle body to form at least two air chambers.

7. The air spring dustproof and exhaust structure according to claim 1, characterized in that, Connected to the bottom of the air spring, the dust cover of the air spring and the bladder form a sealed cavity structure. The input end of the dustproof exhaust channel is connected to the cavity, and the output end of the dustproof exhaust channel is connected to the external environment.

8. An air spring, characterized in that, Includes the air spring dustproof exhaust structure and piston as described in any one of claims 1-7, one end of the piston is connected to the mounting base through the bladder of the air spring, the outer side of the piston of the air spring is connected to the mounting base through a dust cover, and the dust cover is located outside the bladder.

9. A suspension system, characterized in that, Includes the air spring as described in claim 8.

10. A vehicle, characterized in that, Including the suspension as described in claim 9.

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