Double-cavity air spring air path structure

Abstract

The utility model provides a double-cavity air spring air path structure which comprises a main cavity assembly and an auxiliary cavity assembly so that the main cavity assembly and the auxiliary cavity assembly can conduct air exchange to adjust the performance of an air spring. The auxiliary chamber assembly comprises an auxiliary chamber upper cover and an auxiliary chamber lower cover so as to form an auxiliary chamber; the auxiliary chamber lower cover comprises a lower cover side wall, a lower cover bottom plate and an air channel pipeline, the air channel pipeline completely extends to the auxiliary chamber upper cover from the lower cover bottom plate and penetrates out of the auxiliary chamber upper cover, and a sealing ring or a welding layer formed by the junction of the upper air chamber upper cover and the lower air chamber upper cover does not exist in the middle. Therefore, sealing failure caused by aging of the sealing ring or the welding layer, temperature change and the like is avoided, the sealing performance of the gas circuit pipeline is good, and the failure risk is low.

Description

Technical Field

[0001] The utility model relates to the technical field of air springs, in particular to an air path structure of a double-cavity air spring. Background Art

[0002] The stiffness of a dual-chamber air spring is related to its internal volume. The larger the internal volume, the smaller the stiffness. Different road conditions have different requirements for the stiffness of dual-chamber air springs. The dual-chamber air spring structure can adapt to different driving conditions by switching between single and double chamber volumes.

[0003] The existing double-chamber air spring includes a main chamber, a sub-chamber and a solenoid valve arranged therebetween. The gas exchange between the main chamber and the sub-chamber is achieved through the solenoid valve. The main chamber has an air path structure, which extends from the main chamber to the outside of the double-chamber air spring. However, the air path structure in the prior art is often cut off in the middle, resulting in poor sealing.

[0004] For example, in a Chinese utility model patent for a double-chamber air spring structure (CN218063189U), the upper and lower covers of the upper air chamber are connected by two upper and lower sealing rings to achieve sealing at the junction; for another example, in a Chinese utility model patent for a double-chamber air spring structure (CN220687911U), the upper and lower covers of the upper air chamber are both made of plastic, and the sealing at the junction is achieved by plastic welding between the two.

[0005] The air path structure in the above two solutions overlaps with the junction of the upper and lower covers of the upper air chamber. The seal at this junction has a potential risk of failure due to aging, temperature and other influences. Failure may cause air leakage in the air path structure, thereby causing damage to the dual-chamber air spring. Utility Model Content

[0006] The problem to be solved by the utility model is to provide a double-cavity air spring air path structure with good sealing performance and low failure risk.

[0007] The technical solution adopted by the utility model to solve the above problems is: a double-chamber air spring air circuit structure, comprising:

[0008] a main chamber assembly, wherein the main chamber assembly has a main chamber; and

[0009] A sub-chamber component, wherein the sub-chamber component includes a sub-chamber upper cover and a sub-chamber lower cover; the sub-chamber lower cover includes a lower cover side wall, a lower cover bottom plate arranged on the lower cover side wall, and an air duct arranged on the lower cover side wall; the air duct is arranged to extend from the lower cover bottom plate toward the sub-chamber upper cover and pass through the sub-chamber upper cover; the main chamber exchanges air with the outside air through the air duct.

[0010] Compared with the prior art, the utility model includes a main chamber assembly and a sub-chamber assembly so that the two can exchange gas to adjust the performance of the air spring; the sub-chamber assembly includes a sub-chamber upper cover and a sub-chamber lower cover so as to form a sub-chamber; the sub-chamber lower cover includes a lower cover side wall, a lower cover bottom plate and an air path pipeline, and the air path pipeline extends completely from the lower cover bottom plate to the sub-chamber upper cover and passes through the sub-chamber upper cover, without a sealing ring or welding layer formed by the junction of the upper and lower covers of the upper air chamber, thereby avoiding sealing failure caused by aging of the sealing ring or welding layer, temperature changes, etc., so that the air path pipeline has better sealing and lower failure risk.

[0011] The utility model discloses a double-chamber air spring air circuit structure, wherein the air circuit pipeline comprises a pipeline body and a clamping portion arranged at the upper end of the pipeline body; the sub-chamber upper cover has a pipeline matching portion; the pipeline body is arranged to be fixed to the side wall of the lower cover; and the clamping portion is arranged to pass through the pipeline matching portion.

[0012] The utility model discloses a double-chamber air spring air path structure, wherein the pipeline matching portion comprises a pipeline outlet and a heightening ring arranged above the pipeline outlet; the lower end of the clamping portion is interference fit with the inner wall of the pipeline outlet; the upper end of the clamping portion extends from above the heightening ring.

[0013] The utility model provides a double-cavity air spring air circuit structure, which further comprises:

[0014] A sealing part, wherein the sealing part is arranged between the pipeline outlet and the clamping part, and is used to fill the gap between the pipeline outlet and the clamping part.

[0015] The utility model discloses a double-cavity air spring air path structure, wherein the pipeline outlet and the clamping part are set to be metal materials, and the sealing part is produced by welding the pipeline outlet and the clamping part.

[0016] The utility model provides a double-chamber air spring air path structure, wherein the sub-chamber component comprises a rubber pad arranged on the sub-chamber upper cover; the sealing part is arranged at the upper end of the height-enhancing ring so as to avoid the rubber pad during welding.

[0017] The utility model provides a double-chamber air spring air circuit structure, wherein the sub-chamber component further includes a piston sleeve arranged outside the sub-chamber lower cover; the piston sleeve has an avoidance chamber arranged on the top; the sealing part is arranged at the lower end of the clamping part and is located in the avoidance chamber.

[0018] The utility model provides a double-chamber air spring air circuit structure, wherein the air circuit pipeline further comprises a joint; the joint is arranged at the upper end of the clamping part.

[0019] The utility model provides a double-cavity air spring air circuit structure, which further comprises:

[0020] A solenoid valve assembly, wherein the solenoid valve assembly is arranged between the main chamber assembly and the auxiliary chamber assembly so that the main chamber assembly and the auxiliary chamber assembly can exchange gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0022] Figure 2 It is a sectional schematic diagram of the utility model from a three-dimensional perspective;

[0023] Figure 3 This is a schematic cross-sectional view of the utility model from the main viewing angle;

[0024] Figure 4 It is an enlarged schematic diagram of the sealing part. DETAILED DESCRIPTION

[0025] Before describing in detail any embodiment of the utility model, it should be understood that the utility model is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The utility model can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0026] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0027] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0028] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0029] See also Figure 1-4 A double-chamber air spring air circuit structure shown includes a main chamber component 1 and a sub-chamber component 2; wherein the main chamber component 1 has a main chamber 11; wherein the sub-chamber component 2 includes a sub-chamber upper cover 21 and a sub-chamber lower cover 22; the sub-chamber lower cover 22 includes a lower cover side wall 221, a lower cover bottom plate 222 arranged on the lower cover side wall 221 and an air circuit pipe 223 arranged on the lower cover side wall 221; the air circuit pipe 223 is arranged to extend from the lower cover bottom plate 222 toward the sub-chamber upper cover 21 and pass through the sub-chamber upper cover 21; the main chamber 11 exchanges air with the outside air through the air circuit pipe 223.

[0030] In actual use, the utility model includes a main chamber component 1 and a sub-chamber component 2, so that the two can exchange gas to adjust the performance of the air spring; the sub-chamber component 2 includes a sub-chamber upper cover 21 and a sub-chamber lower cover 22, so as to form a sub-chamber; the sub-chamber lower cover 22 includes a lower cover side wall 221, a lower cover bottom plate 222 and an air path pipe 223, and the air path pipe 223 extends completely from the lower cover bottom plate 222 to the sub-chamber upper cover 21 and passes through the sub-chamber upper cover 21, and there is no sealing ring or welding layer formed by the junction of the upper and lower covers of the upper air chamber, thereby avoiding sealing failure caused by aging of the sealing ring or welding layer, temperature changes, etc., so that the air path pipe 223 has better sealing and lower failure risk.

[0031] Please continue reading Figure 3-4 , wherein the gas path pipeline 223 includes a pipeline body 2231 and a clamping portion 2232 arranged at the upper end of the pipeline body 2231; the sub-chamber upper cover 21 has a pipeline matching portion 211; the pipeline body 2231 is configured to be fixed to the lower cover side wall 221; the clamping portion 2232 is configured to pass through the pipeline matching portion 211.

[0032] During production, the pipe body 2231, the clamping portion 2232 and the cover side wall 221 are integrally manufactured and formed. The pipe body 2231 is configured to be fixed to the lower cover side wall 221, so the pipe body 2231 has a stronger fixing effect, while the clamping portion 2232 extending out of the lower cover side wall 221 cannot be fixed by the lower cover side wall 221; through the configuration of the pipe matching portion 211 and the clamping portion 2232, the clamping portion 2232 can be fixed and will not loosen or shake when the car vibrates during driving.

[0033] Please continue reading Figure 4 , wherein the pipe fitting portion 211 includes a pipe outlet 2111 and a heightening ring 2112 arranged above the pipe outlet 2111; the lower end of the clamping portion 2232 is interference fit with the inner wall of the pipe outlet 2111; the upper end of the clamping portion 2232 extends from above the heightening ring 2112.

[0034] Please continue reading Figure 3 , Figure 4 , which further includes a sealing portion 3, which is arranged between the pipeline outlet 2111 and the clamping portion 2232 to fill the gap between the pipeline outlet 2111 and the clamping portion 2232.

[0035] The air path duct 223 adopts an integral design, which avoids the sealing problem of the air path duct 223 caused by the junction of the upper and lower covers. However, there is still a gap between the filling duct outlet 2111 and the clamping part 2232 for air to pass through. Especially during the vibration of the vehicle and after long-term use, the gap between the two may gradually increase, thereby causing the sub-chamber of the dual-chamber air spring to leak. When a sealing part 3 is provided, it can be used to fill the gap between the filling duct outlet 2111 and the clamping part 2232, so that the sealing between the two is increased, thereby avoiding leakage of the sub-chamber.

[0036] In some embodiments, the pipe outlet 2111 and the clamping portion 2232 are set to metal materials, and the sealing portion 3 is produced by welding the pipe outlet 2111 and the clamping portion 2232; through the welding process, not only can the gap between the pipe outlet 2111 and the clamping portion 2232 be filled, but also the connection between the clamping portion 2232 and the pipe outlet 2111 is made more secure, so that the two will not loosen or shake when the car vibrates while driving.

[0037] Please continue reading Figure 1 , Figure 3 , Figure 4 In order to reduce the noise and vibration of the dual-chamber air spring as a whole during operation, the sub-chamber assembly 2 includes a rubber pad 23 arranged on the sub-chamber upper cover 21; the sealing part 3 is arranged at the upper end of the heightening ring 2112 so as to avoid the rubber pad 23 during welding.

[0038] Please continue reading Figure 3 , Figure 4 The sub-chamber assembly 2 further includes a piston sleeve 24 arranged outside the sub-chamber lower cover 22; the piston sleeve 24 has an avoidance cavity 241 arranged on the top; the sealing portion 3 is arranged at the lower end of the clamping portion 2232 and is located in the avoidance cavity 241.

[0039] Please participate further Figure 3 , Figure 4 The air path pipeline 223 further includes a connector 2233; the connector 2233 is arranged at the upper end of the clamping portion 2232; the connector 2233 is used to connect with the air supply equipment in the vehicle to supply air to the main chamber of the dual-chamber air spring, thereby ensuring the normal operation of the dual-chamber air spring.

[0040] Please participate further Figure 3 , Figure 4 , which further includes a solenoid valve assembly 4, which is arranged between the main chamber assembly 1 and the sub-chamber assembly 2 so that the main chamber assembly 1 and the sub-chamber assembly 2 can exchange gases; when the solenoid valve assembly 4 is opened, the gas in the main chamber assembly 1 flows to the sub-chamber assembly 2, so that the air pressure in the main chamber assembly 1 is reduced, thereby adjusting the height and hardness of the entire dual-chamber air spring.

[0041] The above description is only for the best embodiment of the utility model, but it cannot be understood as a limitation of the claims. The utility model is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.

Claims

1. A dual-chamber air spring air circuit structure, characterized in that: include: A main chamber assembly (1), wherein the main chamber assembly (1) has a main chamber (11); as well as A sub-chamber component (2), wherein the sub-chamber component (2) comprises a sub-chamber upper cover (21) and a sub-chamber lower cover (22); the sub-chamber lower cover (22) comprises a lower cover side wall (221), a lower cover bottom plate (222) arranged on the lower cover side wall (221), and an air path pipe (223) arranged on the lower cover side wall (221); the air path pipe (223) is arranged to extend from the lower cover bottom plate (222) toward the sub-chamber upper cover (21) and pass through the sub-chamber upper cover (21); the main chamber (11) exchanges air with the outside air via the air path pipe (223).

2. The double-chamber air spring air circuit structure according to claim 1, characterized in that: The gas path pipeline (223) comprises a pipeline body (2231) and a clamping portion (2232) arranged at the upper end of the pipeline body (2231); the sub-chamber upper cover (21) has a pipeline matching portion (211); the pipeline body (2231) is arranged to be fixed to the lower cover side wall (221); and the clamping portion (2232) is arranged to pass through the pipeline matching portion (211).

3. The double-chamber air spring air circuit structure according to claim 2, characterized in that: The pipe fitting portion (211) comprises a pipe outlet (2111) and a heightening ring (2112) arranged above the pipe outlet (2111); the lower end of the clamping portion (2232) is interference-fitted with the inner wall of the pipe outlet (2111); and the upper end of the clamping portion (2232) extends from above the heightening ring (2112).

4. The double-chamber air spring air circuit structure according to claim 3, characterized in that: Further including: A sealing portion (3), wherein the sealing portion (3) is arranged between the pipeline outlet (2111) and the clamping portion (2232) and is used to fill the gap between the pipeline outlet (2111) and the clamping portion (2232).

5. The double-chamber air spring air circuit structure according to claim 4, characterized in that: The pipeline outlet (2111) and the clamping portion (2232) are configured to be made of metal material, and the sealing portion (3) is produced by welding the pipeline outlet (2111) and the clamping portion (2232).

6. The double-chamber air spring air circuit structure according to claim 5, characterized in that: The sub-chamber assembly (2) comprises a rubber pad (23) arranged on the sub-chamber upper cover (21); the sealing portion (3) is arranged at the upper end of the height-enhancing ring (2112) so as to avoid the rubber pad (23) during welding.

7. The double-chamber air spring air circuit structure according to claim 5 or 6, characterized in that: The sub-chamber assembly (2) further comprises a piston sleeve (24) arranged outside the sub-chamber lower cover (22); the piston sleeve (24) has a avoidance cavity (241) arranged at the top; the sealing portion (3) is arranged at the lower end of the clamping portion (2232) and is located in the avoidance cavity (241).

8. The double-chamber air spring air circuit structure according to claim 2, characterized in that: The gas pipeline (223) further comprises a joint (2233); the joint (2233) is arranged at the upper end of the clamping portion (2232).

9. The double-chamber air spring air circuit structure according to claim 1, characterized in that: Further including: A solenoid valve assembly (4), wherein the solenoid valve assembly (4) is arranged between the main chamber assembly (1) and the auxiliary chamber assembly (2) so that the main chamber assembly (1) and the auxiliary chamber assembly (2) can exchange gas.

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