CN212536514U

CN212536514U - Composite air spring structure with built-in spiral spring

Info

Publication number: CN212536514U
Application number: CN202021593597.2U
Authority: CN
Inventors: 张晓骏; 李国全; 庞滔
Original assignee: Guangzhou Yitao Qianchao Damping Technology Co ltd
Current assignee: GUANGDONG YIKANGTONG AIR SPRING Co.,Ltd.
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-02-12
Anticipated expiration: 2030-08-04

Abstract

The utility model relates to a built-in coil spring's compound air spring structure, including last aluminium alloy, piston, gasbag, dust cover and coil spring, the last port fastening of gasbag is in the outside of last aluminium alloy, and the lower port fastening of gasbag is in the outside of piston, and the outside at the last port of gasbag is connected to the last port of dust cover, and coil spring is located the gasbag, and aluminum alloy is connected to coil spring's upper end, and the base is connected to coil spring's lower extreme, and the base setting is on the piston. The utility model discloses at built-in coil spring of air spring and piston connection structure, reach the rigidity and bear the weight of the stack, make air spring in limited space, satisfy the high performance and bear and the rigidity requirement.

Description

Composite air spring structure with built-in spiral spring

Technical Field

The utility model relates to a sleeve formula air spring field especially relates to a built-in coil spring's compound air spring structure.

Background

Today, there are three main types of air springs: bladder, membrane, and sleeve. The sleeve type air spring is compact in structure and relatively small in bearing capacity, so that the sleeve type air spring is often applied to occasions with relatively compact space, such as seat suspensions, car suspensions and chassis suspensions of off-road vehicles. However, in the prior art, the sleeve type air spring applied to the car chassis has small bearing capacity and rigidity, and needs a large requirement on bearing capacity in a narrow car and off-road vehicle chassis suspension space, the internal pressure of the air spring is relatively large, the air spring is easy to fatigue and lose efficacy under large internal pressure due to exposure to air, and the service life of the air spring is shortened. Therefore, the development of the sleeve type air spring with high bearing capacity and rigidity, which is applied to the chassis suspension of the cars and off-road vehicles, is particularly urgent.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention has been made to provide a compound air spring structure with an internal coil spring that overcomes or at least partially solves the above-mentioned problems.

According to the utility model discloses an aspect provides a built-in coil spring's compound air spring structure, including last aluminium part, piston, gasbag, dust cover and coil spring, the upper port of gasbag fastens in the outside of last aluminium part, and the lower port of gasbag fastens in the outside of piston, and the outside at the last port of gasbag is connected to the upper port of dust cover, and coil spring is located the gasbag, and aluminum part is connected to coil spring's upper end, and the base is connected to coil spring's lower extreme, and the base setting is on the piston.

In a possible implementation mode, an air nozzle is arranged on the upper aluminum piece and communicated with the inside of the air bag, so that the air filling and discharging function of the inside of the air bag 7 is realized.

In one possible embodiment, the upper port of the air bag is fastened with the upper aluminum piece through buckling of the upper pressing ring.

In one possible embodiment, the upper port of the dust cap is secured to the upper aluminum by a clamp.

In a possible embodiment, a first rubber pad is arranged in the aluminum piece, and the upper end of the spiral spring is connected with the first rubber pad.

In a possible embodiment, a cylindrical protrusion is arranged on the base, a second rubber pad is sleeved outside the bottom of the cylindrical protrusion, and the lower end of the spiral spring is sleeved outside the cylindrical protrusion and abuts against the second rubber pad and then is connected by a pin in an interference fit manner.

In one possible embodiment, the base and the piston are connected by a screw thread.

In one possible embodiment, the lower port of the air bag is fastened with the piston through a lower pressing ring in a buckling mode.

The utility model has the advantages that:

(1) the rigidity and the bearing capacity of the air spring are improved, the rigidity is improved by more than 30%, and the bearing capacity is improved by more than 20%.

(2) Under the overload condition, the built-in spiral spring can play a role in supporting and buffering, and the upper cover of the air spring and the lower piston are prevented from being damaged due to collision. The protective effect is achieved, and the service life of the product is prolonged.

(3) After the bearing capacity of the built-in air spring is improved, the requirement on the internal pressure of the air spring can be correspondingly reduced, so that the durability of the air spring is improved.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a composite air spring structure with a built-in coil spring according to an embodiment of the present invention;

FIG. 2 is a perspective view of a compound air spring structure with an internal coil spring from another perspective;

FIG. 3 is a cross-sectional view of FIG. 1;

fig. 4 is a schematic perspective view of a cylindrical protrusion provided in an embodiment of the present invention;

description of reference numerals:

1-air nozzle, 2-upper aluminum piece, 3-hoop, 4-upper press ring, 5-first rubber pad, 6-dust cover, 7-air bag, 8-spiral spring, 9-pin, 10-lower press ring, 11-second rubber pad, 12-base and 13-piston;

121-cylindrical protrusion, 122-pin hole.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terms "comprises" and "comprising," and any variations thereof, in the described embodiments of the invention, and in the claims and drawings, are intended to cover a non-exclusive inclusion, such as a list of steps or elements.

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

As shown in fig. 1-4, an embodiment of the present invention provides a composite air spring structure with a built-in coil spring, including: go up aluminium alloy 2, piston 13, gasbag 7, dust cover 6 and coil spring 8, the last port fastening of gasbag 7 is in go up the outside of aluminium alloy 2, the lower port fastening of gasbag 7 is in the outside of piston 13, the last port connection of dust cover 6 is in the outside of the last port of gasbag 7, coil spring 8 is located gasbag 7, the upper end of coil spring 8 is connected go up aluminium alloy 2, base 12 is connected to the lower extreme of coil spring 8, base 12 sets up on piston 13.

In one example, an air tap 1 is arranged on the upper aluminum part 2, and the air tap 1 is communicated with the inside of the air bag 7 to realize the inflation and deflation functions of the inside of the air bag 7.

In one example, the upper port of the air bag 7 is fastened with the upper aluminum piece 2 through an upper pressing ring 4 in a buckling mode.

In one example, the upper port of the dust cap 6 is secured to the upper aluminum member 2 by a clamp 3.

In one example, a first rubber pad 5 is arranged in the aluminum member 2 to play a role of buffering, no noise is generated when the aluminum member moves up and down, and the upper end of the spiral spring 8 is connected with the first rubber pad 5.

In one example, a cylindrical protrusion 121 is arranged on the base 12, a second rubber pad 11 is sleeved on the outer side of the bottom of the cylindrical protrusion 121 to play a buffering role and ensure no noise during up-and-down movement, and the lower end of the spiral spring 8 is sleeved on the outer side of the cylindrical protrusion 121 and abuts against the second rubber pad 11 and then is connected by a pin 9 in an interference fit manner.

In one example, the base 12 and the piston 13 are connected by a threaded arrangement.

In one example, the lower port of the air bag 7 is fastened with the piston 13 through the lower pressing ring 10 in a buckling mode.

The utility model discloses an installation and working process:

(1) during assembly, the second rubber pad 11 is placed into the base 12, the spiral spring 8 is placed into the upper portions of the base 12 and the rubber pad 11, the pin 9 is pressed into the pin hole 122 of the cylindrical protrusion 121 of the base 12 through the press, and the pin 9 is connected with the pin hole in an interference fit mode. Then, a little thread fastening glue is punched on the thread at the bottom of the base 12, the base 12 is screwed into the internal thread hole of the piston 13, and then the base is fastened by a spanner. The first rubber pad 5 is adhered inside the upper aluminum part 2 by glue, and then is buckled and pressed together with the upper port of the air bag 7 by an upper press ring 4 through a pipe press. And connecting the assembled assembly of the spiral spring 8, the base 12 and the piston 13 with the air bag 7, and buckling and pressing the piston 13 and the lower port of the air bag 7 together through a pressing ring 10 for a pipe pressing machine. The assembled airbag is then crimped to the installation height position by a crimper. The air faucet 1 is screwed into the upper part of the upper aluminum piece 2 by a wrench. And (3) sheathing the dust cover 6 from the upper end of the air spring, stopping after the upper port of the dust cover 6 reaches the position of the press ring 4, and then fastening by buckling through the clamp 3.

(2) In the work, the air can realize the function of charging and discharging air into the air bag 7 through the air tap 1, when the air pressure charged into the air bag is increased, the rigidity and the hardness of the air bag are also increased, the internal spiral spring also bears part of load, and the load capacity and the rigidity requirement of the air spring are improved. When the vehicle is overloaded, the air spring and the internal spiral spring are pressed to the limit, so that the collision between the upper aluminum piece and the piston is limited, a protection effect is achieved under the limit condition, the service performance of the air spring is further improved, and the service life of the air spring is further prolonged.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The composite air spring structure with the built-in spiral spring is characterized by comprising an upper aluminum piece (2), a piston (13), an air bag (7), a dust cover (6) and a spiral spring (8), wherein an upper port of the air bag (7) is fastened on the outer side of the upper aluminum piece (2), a lower port of the air bag (7) is fastened on the outer side of the piston (13), an upper port of the dust cover (6) is connected on the outer side of the upper port of the air bag (7), the spiral spring (8) is located in the air bag (7), the upper end of the spiral spring (8) is connected with the upper aluminum piece (2), the lower end of the spiral spring (8) is connected with a base (12), and the base (12) is arranged on the piston (13).

2. The composite air spring structure with the built-in spiral spring according to claim 1, wherein an air tap (1) is arranged on the upper aluminum part (2), and the air tap (1) is communicated with the inside of the air bag (7) to realize the function of inflating and deflating the inside of the air bag (7).

3. The built-in spiral spring compound air spring structure as claimed in claim 1, wherein the upper port of the air bag (7) is fastened to the upper aluminum member (2) by means of an upper pressing ring (4).

4. The innerspring composite air spring structure of claim 1, wherein the upper port of the dust cover (6) is secured to the upper aluminum member (2) by a clamp (3).

5. The built-in coil spring compound air spring structure according to claim 1, wherein a first rubber pad (5) is provided in the aluminum member (2), and an upper end of the coil spring (8) is connected to the first rubber pad (5).

6. The built-in spiral spring compound air spring structure as claimed in claim 1, wherein the base (12) is provided with a cylindrical protrusion (121), a second rubber pad (11) is sleeved on the outer side of the bottom of the cylindrical protrusion (121), and the lower end of the spiral spring (8) is sleeved on the outer side of the cylindrical protrusion (121) and abuts against the second rubber pad (11) and then is connected by a pin (9) in an interference fit manner.

7. The innerspring composite air spring structure of claim 1 wherein the base (12) and piston (13) are connected by a threaded arrangement.

8. The built-in coil spring compound air spring structure according to claim 1, wherein the lower port of the air bag (7) is fastened to the piston (13) by a lower pressing ring (10).