Upper air chamber and bolt connecting structure

Abstract

The utility model discloses an upper air chamber and bolt connecting structure which comprises an upper air chamber, a bolt and a filling piece, and a plurality of installation through holes used for installing the bolt are formed in the top of the upper air chamber. The inner wall of the top of the upper air chamber is filled with the filling piece, so that the bolt head of the bolt is attached to the inner wall of the top of the upper air chamber at the mounting through hole and the screw of the bolt extends out of the mounting through hole; the filling piece, the inner wall of the top of the upper air chamber and the bolt head of the bolt are integrally vulcanized, or the filling piece is formed by curing resin. The utility model has the advantages that on one hand, the fixing stability of the bolt on the upper air chamber is increased, the sealing effect between the upper air chamber and the bolt is ensured, and the filling piece is formed by later vulcanization or resin curing, so that the size of the inner cavity of the upper air chamber can be adjusted by changing the volume of the filling piece; therefore, the volume of the air chamber of the air spring is adjusted to meet the requirements of more air springs, the universality of parts is improved, and the purpose of reducing cost is achieved.

Description

Technical Field

[0001] This utility model relates to the field of air spring technology, specifically to an upper air chamber and bolt connection structure. Background Technology

[0002] Air springs are used to connect the vehicle chassis suspension and tires. Their function is to absorb vibrations generated during tire movement, improving the comfort of the vehicle. The upper air chamber structure in an air spring is connected to the vehicle chassis via bolts and nuts. The bolts are installed in the upper air chamber by drilling holes in it, then extending the bolts upwards from inside the upper air chamber, and finally connecting and fixing the upper air chamber to the bolts. However, the existing connection method has poor sealing between the upper air chamber and the bolts. During long-term use of the air spring, the bolts are prone to loosening due to vehicle vibrations, leading to air leakage at the connection point and reducing the effectiveness of the air spring. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to ensure the sealing effect between the upper air chamber and the bolt.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] An upper air chamber and bolt connection structure includes an upper air chamber, bolts and filler. The top of the upper air chamber has multiple mounting through holes for mounting bolts. The filler fills the inner wall of the top of the upper air chamber, causing the bolt head to fit against the inner wall of the top of the upper air chamber at the mounting through hole and the bolt shank to extend out of the mounting through hole.

[0006] The filler is integrally vulcanized with the inner wall of the upper air chamber top and the bolt head, or the filler is cured with resin.

[0007] By setting the filler, the stability of the bolts fixed on the upper air chamber is increased, ensuring the sealing effect between the upper air chamber and the bolts. Furthermore, since the filler is formed by post-curing or resin curing, the size of the internal cavity of the upper air chamber can be adjusted by changing the volume of the filler, thereby adjusting the volume of the air spring chamber and adapting to the requirements of more air springs. This improves the versatility of the parts and achieves the goal of reducing costs.

[0008] Preferably, the upper air chamber includes an upper cover plate and a lower cover plate, the upper cover plate is fixed on the lower cover plate, and the mounting through hole is provided on the upper cover plate.

[0009] Preferably, the number of mounting through holes is four.

[0010] Preferably, the bottom surface of the filler is an upwardly arched arc shape, which allows the filler to transmit the force along the arch axis when it receives the downward force of the bolt, making the entire filler closer to the overall compressed state, and further ensuring the stability of the bolt fixed on the upper air chamber.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By setting the filler, the stability of the bolt fixed on the upper air chamber is increased, ensuring the sealing effect between the upper air chamber and the bolt. Furthermore, since the filler is formed by post-curing or resin curing, the size of the internal cavity of the upper air chamber can be adjusted by changing the volume of the filler, thereby adjusting the volume of the air spring chamber to meet the requirements of more air springs. The versatility of the parts is improved, thereby achieving the goal of reducing costs.

[0013] 2. By designing the bottom surface of the filler to be an upward-arched arc shape, the filler can transmit the force along the arch axis when it receives the downward force of the bolt, making the entire filler closer to the overall pressure state, and further ensuring the stability of the bolt fixed on the upper air chamber. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0015] Figure 2 This is a cross-sectional view of an embodiment of the present utility model. Detailed Implementation

[0016] To facilitate understanding of the technical solution of this utility model by those skilled in the art, the technical solution of this utility model will now be further described in conjunction with the accompanying drawings.

[0017] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0018] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying contradictory importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0019] See Figures 1 to 2 This embodiment discloses an upper air chamber and bolt connection structure, including an upper air chamber 1, bolts 2 and filler 3. The upper air chamber 1 includes an upper cover plate 11 and a lower cover plate 12. The upper cover plate 11 is fixed on the lower cover plate 12. The top of the upper cover plate 11 has four mounting through holes 101 for mounting the bolts 2.

[0020] The filler 3 is filled on the inner wall of the top of the upper cover plate 11, causing the bolt head of the bolt 2 to fit against the inner wall of the top of the upper cover plate 11 at the mounting through hole 101 and the bolt shank of the bolt 2 to protrude from the mounting through hole 101; the filler 3 is integrally vulcanized with the inner wall of the top of the upper cover plate 11 and the bolt head of the bolt 2, or the filler 3 is cured with resin.

[0021] By setting the filler 3, on the one hand, the stability of the bolt 2 fixed on the upper air chamber 1 is increased, ensuring the sealing effect between the upper air chamber 1 and the bolt 2. On the other hand, since the filler 3 is formed by post-curing or resin curing, the size of the internal cavity of the upper air chamber 1 can be adjusted by changing the volume of the filler 3, thereby adjusting the volume of the air spring chamber, adapting to the requirements of more air springs, improving the versatility of parts, and thus achieving the goal of reducing costs.

[0022] Furthermore, the bottom surface of the filler 3 is an upwardly arched arc shape, which allows the filler 3 to transmit the force along the arch axis when it receives the downward force of the bolt 2, making the entire filler 3 closer to the overall pressure state, and further ensuring the stability of the bolt 2 fixed on the upper air chamber 1.

[0023] The installation process in this embodiment is as follows: four bolts 2 are respectively set on the mounting through holes 101 on the upper cover plate 11, with the bolt heads facing upwards. Then, the filler 3 is integrally vulcanized with the top inner wall of the upper cover plate 11 and the bolt heads of the bolts 2, or the filler 3 is cured with resin so that the bolt heads of the bolts 2 are attached to the top inner wall of the upper cover plate 11 at the mounting through holes 101.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] The above-described embodiments are merely examples of implementation methods of the utility model. The scope of protection of this utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model.

Claims

1. An upper air chamber and bolted connection structure, characterized in that: It includes an upper air chamber, bolts, and filler. The top of the upper air chamber has multiple mounting through holes for mounting bolts. The filler fills the inner wall of the top of the upper air chamber, causing the bolt head to fit against the inner wall of the top of the upper air chamber at the mounting through hole and the bolt shank to extend out of the mounting through hole. The filler is integrally vulcanized with the inner wall of the upper air chamber top and the bolt head, or the filler is cured with resin.

2. The upper air chamber and bolted connection structure according to claim 1, characterized in that: The upper air chamber includes an upper cover plate and a lower cover plate, the upper cover plate is fixed on the lower cover plate, and the mounting through hole is provided on the upper cover plate.

3. The upper air chamber and bolted connection structure according to claim 2, characterized in that: The number of mounting through holes is 4.

4. The upper air chamber and bolted connection structure according to claim 1, characterized in that: The bottom surface of the filler is an upward-arched arc shape.

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