Auxiliary cavity structure of double-cavity air spring

Abstract

According to the auxiliary cavity structure of the double-cavity air spring, the upper air chamber upper cover and the upper air chamber lower cover of the auxiliary cavity structure are welded and fixed through the upper cover plate and the upper air chamber outer plate, and due to the fact that the welding containing part is arranged and can be used for containing overflowing materials generated in the welding process, the overflowing materials cannot damage a leather bag, and the safety of the air spring is improved. When the overflowing material is contained in the welding containing part, the influence of the overflowing material on the appearance attractiveness can be reduced; the electromagnetic valve structure comprises an electromagnetic valve body and a dustproof cover; the upper cover plate, the upper air chamber inner plate, the electromagnetic valve body, the lower cover plate and the upper air chamber outer plate form a sealed space, and the sealed space serves as an auxiliary cavity of the double-cavity air spring and is used for conducting gas exchange with the main cavity through the electromagnetic valve body so that the pressure intensity of the main cavity can be changed. The dustproof cover is arranged on the electromagnetic valve body so that the sealing degree between the upper air chamber inner plate and the electromagnetic valve body can be increased, muddy water is prevented from permeating into the sealing space from the space between the upper air chamber inner plate and the electromagnetic valve body, and the sealing performance of the auxiliary chamber is guaranteed.

Description

Technical Field

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

[0002] The stiffness of an 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 air springs. Dual-chamber air springs can adapt to different driving conditions by switching between single and double chamber volumes.

[0003] The double-chamber air spring sub-chamber structure is currently mainly achieved through metal welding or plastic welding. The overflowing material during the welding process may form burrs or sharp objects that fall and damage the bladder skin, and these burrs or sharp objects affect the appearance of the air spring; in addition, the current solenoid valve assembly structure will form a gap between the solenoid valve and the upper air chamber cover, and muddy water will enter the sealing groove on the solenoid valve through the gap. After the muddy water enters the sealing groove, it will cause the seal to fail, resulting in failure of the sub-chamber. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a sub-chamber structure which can prevent the overflowed material from damaging the bag skin during welding and has good sealing performance.

[0005] The technical solution adopted by the utility model to solve the above problems is: a sub-chamber structure of a double-chamber empty spring, comprising:

[0006] An upper air chamber upper cover, wherein the upper air chamber upper cover comprises an upper cover plate and an upper air chamber inner plate disposed in the upper cover plate;

[0007] An upper air chamber lower cover, wherein the upper air chamber lower cover comprises an upper air chamber outer plate and a lower cover plate disposed below the upper air chamber outer plate;

[0008] a welding accommodating portion; the lower end of the upper cover plate is configured to be welded and fixed to the upper end of the upper air chamber outer plate; the welding accommodating portion is provided at least at one of the upper cover plate and the upper air chamber outer plate, and is located outside the welding position; and

[0009] A solenoid valve structure, wherein the solenoid valve structure includes a solenoid valve body and a dust cover; the upper cover plate, the upper air chamber inner plate, the solenoid valve body, the lower cover plate and the upper air chamber outer plate form a sealed space; the dust cover is arranged on the solenoid valve body.

[0010] Compared with the prior art, the utility model has the upper air chamber upper cover and the upper air chamber lower cover welded and fixed by the upper cover plate and the upper air chamber outer plate. Since a welding accommodating portion is provided, it can be used to accommodate the overflow material generated during the welding process, so that the overflow material cannot damage the bladder skin, and when the overflow material is accommodated in the welding accommodating portion, its impact on the appearance can be reduced; the solenoid valve structure includes a solenoid valve body and a dust cover; the upper cover plate, the upper air chamber inner plate, the solenoid valve body, the lower cover plate and the upper air chamber outer plate form a sealed space, which is used as a sub-chamber of a double-chamber air spring for gas exchange with the main chamber through the solenoid valve body to change the pressure of the main chamber; the dust cover is arranged on the solenoid valve body to increase the sealing degree between the upper air chamber inner plate and the solenoid valve body, to prevent mud and water from seeping into the aforementioned sealed space from between the two, so as to ensure the sealing of the sub-chamber.

[0011] The utility model provides a sub-chamber structure of a double-chamber air spring, wherein the upper cover plate comprises a lower welding portion arranged at the bottom, the upper air chamber outer plate comprises an upper welding portion arranged at the top, and the lower welding portion is welded and fixed to the upper welding portion.

[0012] The utility model provides a sub-cavity structure of a double-cavity hollow spring, wherein the welding accommodating portion is arranged at least one of the lower welding portion and the upper welding portion, and is located outside the lower welding portion and the upper welding portion.

[0013] The utility model discloses a sub-chamber structure of a double-chamber empty spring, wherein the welding accommodating portion comprises an upper accommodating half groove and a lower accommodating half groove; the upper accommodating half groove and the lower accommodating half groove have openings opened in opposite directions, so that the upper accommodating half groove and the lower accommodating half groove form a welding accommodating space.

[0014] The utility model provides a sub-chamber structure of a double-chamber hollow spring, which further comprises:

[0015] A sealing portion, wherein the sealing portion is provided at least at one of the upper cover plate and the upper air chamber outer plate, and is used to seal the welding accommodating portion from the outside.

[0016] The utility model discloses a sub-chamber structure of a double-chamber hollow spring, wherein the sealing portion is arranged on the upper air chamber outer plate, and the sealing portion upwardly adheres to the upper cover plate so as to shield the overflowing material in the welding accommodating portion.

[0017] The utility model discloses a sub-chamber structure of a double-chamber empty spring, wherein the inner plate of the upper air chamber is configured to be conical; the dust cover is configured to be fixed to the inner plate of the upper air chamber; the side surface of the dust cover is a conical surface and is interference fit with the side surface of the inner plate of the upper air chamber.

[0018] The utility model discloses a sub-chamber structure of a double-chamber hollow spring, wherein the dust cover comprises a first tension layer and a second tension layer; the force between the first tension layer and the inner plate of the upper air chamber is set to be smaller than the force between the second tension layer and the inner plate of the upper air chamber, so that when the inner plate of the upper air chamber vibrates or deforms, the first tension layer deforms before the second tension layer.

[0019] The utility model provides a sub-chamber structure of a double-chamber empty spring, wherein the solenoid valve structure further comprises at least one sealing ring; the sealing ring is arranged between the inner plate of the upper air chamber and the side wall of the solenoid valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0021] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0022] Figure 3 It is an enlarged schematic diagram of the structure of the welding accommodation part;

[0023] Figure 4 This is a schematic diagram of the coordination between the dust cover and the upper air chamber inner panel;

[0024] Figure 5 A three-dimensional schematic diagram of a dust cover;

[0025] Figure 6 A schematic cross-sectional view of a dust cover. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] 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.

[0029] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0030] See also Figure 1-6 The sub-chamber structure of a double-chamber empty spring shown in the figure includes an upper air chamber upper cover 1, an upper air chamber lower cover 2, a welding accommodating portion 3 and an electromagnetic valve structure 4; wherein the upper air chamber upper cover 1 is an upper cover plate 11 and an upper air chamber inner plate 12 arranged in the upper cover plate 11; wherein the upper air chamber lower cover 2 includes an upper air chamber outer plate 21 and a lower cover plate 22 arranged below the upper air chamber outer plate 21; the lower end of the upper cover plate 11 is arranged to be welded and fixed to the upper end of the upper air chamber outer plate 21; the welding accommodating portion 3 is arranged at least at one place between the upper cover plate 11 and the upper air chamber outer plate 21, and is located outside the welding position; the electromagnetic valve structure 4 includes a electromagnetic valve body 41 and a dust cover 42; the upper cover plate 11, the upper air chamber upper plate 12, the electromagnetic valve body 41, the lower cover plate 22 and the upper air chamber outer plate 21 form a sealed space; the dust cover 42 is arranged on the electromagnetic valve body 41.

[0031] In actual use, the upper air chamber upper cover 1 and the upper air chamber lower cover 2 of the utility model are welded and fixed by the upper cover plate 11 and the upper air chamber outer plate 21. Since a welding accommodating portion 3 is provided, it can be used to accommodate the overflow material generated during the welding process, so that the overflow material cannot damage the bag skin, and when the overflow material is accommodated in the welding accommodating portion 3, its impact on the appearance can be reduced; the solenoid valve structure 4 includes a solenoid valve body 41 and a dust cover 42; the upper cover plate 11, the upper air chamber inner plate 12, the solenoid valve body 41, the lower cover plate 22 and the upper air chamber outer plate 21 form a sealed space, which is used as a sub-chamber of a double-chamber air spring for gas exchange with the main chamber through the solenoid valve body 41 to change the pressure of the main chamber; the dust cover 42 is arranged on the solenoid valve body 41 to increase the sealing degree between the upper air chamber inner plate 12 and the solenoid valve body 41, to prevent mud and water from penetrating into the aforementioned sealed space from between the two, so as to ensure the sealing of the sub-chamber.

[0032] Furthermore, the double-chamber air spring includes a main chamber structure, which is mainly formed by a bladder skin, and the main chamber structure and a sub-chamber structure of a double-chamber air spring of the utility model exchange gas through the solenoid valve body 41; when the solenoid valve body 41 is opened, the gas enters the sub-chamber structure from the main chamber structure through the lower end of the solenoid valve body 41, thereby adjusting the height and hardness of the entire double-chamber air spring.

[0033] Please continue reading Figure 2 , Figure 3 , wherein the upper cover plate 11 includes a lower welding portion 111 disposed at the bottom, and the upper air chamber outer plate 21 includes an upper welding portion 211 disposed at the top, and the lower welding portion 111 is welded and fixed to the upper welding portion 211 .

[0034] The lower welding part 111 and the upper welding part 211 are welded and fixed, which helps to reduce the gap between the two, so that the sealing between the two is better, thereby improving the sealing of the sub-chamber structure.

[0035] Please continue reading Figure 2 , Figure 3 The welding accommodation portion 3 is disposed at at least one of the lower welding portion 111 and the upper welding portion 211 , and is located outside the lower welding portion 111 and the upper welding portion 211 .

[0036] Specifically, the function of the welding accommodating portion 3 is to accommodate the material overflowing outward along direction A when the lower welding portion 111 and the upper welding portion 211 are welded. When a welding accommodating portion 3 is provided at any point outside the lower welding portion 111 and the upper welding portion 211, the material overflowing outward can be accommodated to prevent these materials from forming burrs or sharp objects from falling and damaging the bag skin.

[0037] Please read further Figure 3In some embodiments, the welding accommodating portion 3 includes an upper accommodating half groove 31 and a lower accommodating half groove 32; the upper accommodating half groove 31 and the lower accommodating half groove 32 have openings opened opposite to each other, so that the upper accommodating half groove 31 and the lower accommodating half groove 32 form a welding accommodating space; under this arrangement, the space of the welding accommodating portion 3 is larger to accommodate more overflowed materials, further preventing these materials from forming burrs or sharp objects from falling and damaging the bag skin.

[0038] Please continue reading Figure 2 , Figure 3 , which further includes a closing portion 5, which is arranged at at least one of the upper cover plate 11 and the upper air chamber outer plate 21, and is used to close the welding accommodating portion 3 from the outside.

[0039] Specifically, when a closing portion 5 is provided at any position of the upper cover plate 11 and the upper air chamber outer plate 21, it can play the role of shielding the overflowing material in the welding accommodating portion 3. After shielding the overflowing material, it can not only play an aesthetic role, but also further ensure that these materials form burrs or sharp objects and fall off to damage the bag skin.

[0040] In some embodiments, the sealing portion 5 is disposed on the upper air chamber outer plate 21 , and the sealing portion 5 is upwardly attached to the upper cover plate 11 so as to shield the overflowing material in the welding accommodating portion 3 .

[0041] Please continue reading Figure 2 , Figure 4 , wherein the upper air chamber inner plate 12 is set to be conical; the dust cover 42 is set to be fixed to the upper air chamber inner plate 12; the side of the dust cover 42 is a conical surface, and has an interference fit with the side of the upper air chamber inner plate 12; the side of the dust cover 42 has an interference fit with the side of the upper air chamber inner plate 12 to block mud and water, making it difficult for mud and water to pass through the dust cover 42 and the solenoid valve body 41 and enter the sub-chamber structure.

[0042] Please continue reading Figure 5 , Figure 6 , wherein the dust cover 42 includes a first tension layer 421 and a second tension layer 422; the force between the first tension layer 421 and the upper air chamber inner plate 12 is set to be smaller than the force between the second tension layer 422 and the upper air chamber inner plate 12, so that when the upper air chamber inner plate 12 vibrates or deforms, the first tension layer 421 deforms before the second tension layer 422.

[0043] Specifically, the dual-chamber air spring is used in the automobile chassis. During the driving of the automobile, the automobile itself will vibrate, which will also cause the dual-chamber air spring to contract, thereby driving the upper air chamber inner plate 12 to vibrate and deform; when the upper air chamber inner plate 12 vibrates and deforms, the first tension layer 421 will deform along the B direction before the second tension layer 422, so as to absorb the vibration and deformation generated by the upper air chamber inner plate 12 through deformation, and ensure that the second tension layer 422 always remains in contact with the upper air chamber inner plate 12, thereby preventing mud and water from entering the sub-chamber structure through the dust cover 42 and the solenoid valve body 41.

[0044] Please read further Figure 4 , wherein the solenoid valve structure 4 further includes at least one sealing ring 43; the sealing ring 43 is arranged between the inner plate 12 of the upper air chamber and the side wall of the solenoid valve body 41, and is used to prevent muddy water from penetrating into the sub-chamber structure through the solenoid valve body 41, thereby further ensuring the sealing of the sub-chamber structure.

[0045] 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 sub-chamber structure of a double-chamber empty spring, characterized in that: include: An upper air chamber cover (1), wherein the upper air chamber cover (1) comprises an upper cover plate (11) and an upper air chamber lower plate (12) disposed in the upper cover plate (11); An upper air chamber lower cover (2), wherein the upper air chamber lower cover (2) comprises an upper air chamber outer plate (21) and a lower cover plate (22) disposed below the upper air chamber outer plate (21); a welding accommodating portion (3); the lower end of the upper cover plate (11) is arranged to be welded and fixed to the upper end of the upper air chamber outer plate (21); the welding accommodating portion (3) is arranged at at least one of the upper cover plate (11) and the upper air chamber outer plate (21), and is located outside the welding position; and A solenoid valve structure (4), wherein the solenoid valve structure (4) comprises a solenoid valve body (41) and a dust cover (42); the upper cover plate (11), the upper air chamber inner plate (12), the solenoid valve body (41), the lower cover plate (22) and the upper air chamber outer plate (21) form a sealed space; the dust cover (42) is arranged on the solenoid valve body (41).

2. The sub-chamber structure of the double-chamber hollow spring according to claim 1 is characterized in that: The upper cover plate (11) includes a lower welding portion (111) disposed at the bottom, and the upper air chamber outer plate (21) includes an upper welding portion (211) disposed at the top, and the lower welding portion (111) is fixed to the upper welding portion (211) by welding.

3. The sub-chamber structure of the double-chamber hollow spring according to claim 2 is characterized in that: The welding accommodating portion (3) is arranged at least at one of the lower welding portion (111) and the upper welding portion (211), and is located outside the lower welding portion (111) and the upper welding portion (211).

4. The sub-chamber structure of the double-chamber hollow spring according to claim 3 is characterized in that: The welding accommodating portion (3) comprises an upper accommodating half groove (31) and a lower accommodating half groove (32); the upper accommodating half groove (31) and the lower accommodating half groove (32) have openings opened in opposite directions, so that the upper accommodating half groove (31) and the lower accommodating half groove (32) form a welding accommodating space.

5. The sub-chamber structure of the double-chamber hollow spring according to claim 1 or 4, characterized in that: Further including: A closing portion (5), wherein the closing portion (5) is arranged at at least one of the upper cover plate (11) and the upper air chamber outer plate (21), and is used to close the welding accommodating portion (3) from the outside.

6. The sub-chamber structure of the double-chamber hollow spring according to claim 5, characterized in that: The sealing portion (5) is arranged on the upper air chamber outer plate (21), and the sealing portion (5) is upwardly attached to the upper cover plate (11) so as to shield the overflowing material in the welding accommodating portion (3).

7. The sub-chamber structure of the double-chamber hollow spring according to claim 1 is characterized in that: The upper air chamber inner plate (12) is configured to be conical; the dust cover (42) is configured to be fixed to the upper air chamber inner plate (12); the side surface of the dust cover (42) is a conical surface and is interference fit with the side surface of the upper air chamber inner plate (12).

8. The sub-chamber structure of the double-chamber hollow spring according to claim 7, characterized in that: The dust cover (42) includes a first tension layer (421) and a second tension layer (422); the force between the first tension layer (421) and the upper air chamber inner plate (12) is set to be smaller than the force between the second tension layer (422) and the upper air chamber inner plate (12), so that when the upper air chamber inner plate (12) vibrates or deforms, the first tension layer (421) deforms before the second tension layer (422).

9. The sub-chamber structure of the double-chamber hollow spring according to claim 8, characterized in that: The solenoid valve structure (4) further comprises at least one sealing ring (43); the sealing ring (43) is arranged between the inner plate (12) of the upper air chamber and the side wall of the solenoid valve body (41).

Images