JP2000320596A - Vessel for air spring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the vessel for an air spring having a core material dispensed with the connection process through calking. SOLUTION: A core material 21 is formed into a ring-shape doubly wound with a wire rod and for example and installed on the mouth part of a diaphragm by a vulcanization adhesion. Since the core material 21 is doubly wound, the strength of the core material 21 can be kept to a certain extent, even if the one side end 23 of the core material 21 and the other end 25 are not connected by calking, and the enlarging of the mouth of the diaphragm can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a container for an air spring used in a vehicle.

[0002]

BACKGROUND ART An air spring container is a spring utilizing the elasticity of air. The air spring container functions to absorb vibrations and shocks transmitted from the wheels to the body, and to keep the vehicle height constant, and is used for vehicles such as automobiles and railways.
FIG. 8 is a perspective view of an automobile showing an attached state of the air spring container. Wheel 2 is attached to body 1 with air spring container 1
0 is attached. Air spring container 1
The structure of 0 will be described.

FIG. 6 is a sectional view of the air spring container 10. The air spring container 10 includes a diaphragm 12, a first connection portion 13, and a second connection portion 15. Diaphragm 1
Reference numeral 2 is made of an elastic member such as rubber. Diaphragm 1
The second first opening 17 is connected to the first connection portion 13 by means such as caulking. The first connection portion 13 is attached to the body. The second opening 19 of the diaphragm 12 is connected to the second connecting portion 15.
It is connected by means such as caulking. The second opening 15 is attached to the wheel side. The volume of the air spring container 10 changes due to the expansion and contraction of the diaphragm 12 in the direction of arrow A. The above function is exhibited by this volume change.

[0004] The technology described here is a background technology and is not a conventional technology.

[0005]

In the first opening 17 and the second opening 19 of the diaphragm 12, it is necessary to embed a core material 21 made of metal or the like. This is because since the diaphragm 12 is made of an elastic member such as rubber, the first opening 17 and the second opening 19 are formed without the core material 21 due to a pressure change in the air spring container when the air spring container is used. The diaphragm 12 becomes larger and the first connecting portion 13 and the second
This is because there is a possibility that the connection portion 15 may come off.

As the core material 21, for example, a structure shown in FIG. 7 can be considered. That is, the wire 27 made of metal or the like is formed into a ring shape, and one end 23 of the wire 27 and the other end 25 are connected by the caulking 33. If not connected by caulking, the core material 21 is easily deformed by the pressure change in the air spring container when the air spring container is used, whereby the first opening 17 and the second opening 19 become large, and the diaphragm 12 1 connection section 13 and second connection section 1
It deviates from 5.

However, the production of the core material by caulking is time-consuming and increases the cost.

The present invention has been made to solve such a problem. An object of the present invention is to provide an air spring container provided with a core material that does not require a connection step by caulking.

[0009]

SUMMARY OF THE INVENTION The present invention is an air spring container for a vehicle, comprising an expandable member, the volume of the air spring container being changed by expansion and contraction of the expandable member, and a first opening of the expandable member is provided on the vehicle. And the second port of the telescopic member is connected to the wheel side of the vehicle, and the air spring container is further attached to the first and second ports of the telescopic member, and the first and second ports are connected to the first and second ports of the telescopic member. A core material for preventing the part from spreading is provided, and the core material has a ring shape in which a wire is wound twice or more.

Since the core described in the background art is a single-turn ring, one end of the core and the other end must be connected by caulking. On the other hand, in the present invention, since the core material has a double winding or more, the strength of the core material is maintained to some extent without connecting one end and the other end of the core material by caulking. It is possible to prevent the expansion of the first and second ports of the elastic member. Therefore, according to the present invention, the connecting step by caulking can be eliminated in the core material manufacturing step.

In the present invention, the number of windings of the wire is not particularly limited as long as the expansion of the first and second openings of the elastic member can be prevented, but double winding is preferable.

In the present invention, the shape of the cross section of the core material is preferably circular or square. For example, when a metal wire having a circular cross section is double-wound, the cross section of this core material becomes an eight-shaped shape.
If the shape of the cross section of the core material is such a shape, the first of the elastic member
When connecting the mouth and the second mouth to the other party (wheel side, body side), it is not possible to make good contact with the other party.
On the other hand, if the cross-sectional shape of the core material is a circle or a square, it is possible to make good contact with the other party. Such a shape can be produced, for example, by making a ring in which a metal wire having a circular cross section is double-wound or more, and pressing or forging the ring.

In the present invention, the end of the core material is preferably tapered. With such a shape, the part where the end of the core material is located can be formed in the same shape as the other parts in the processing such as the press. Therefore, the contact with the other party can be made uniform. Details will be described in the embodiments.

In the present invention, if the strength of the core is necessary, it is preferable to fix the wires of the core together. As a fixing method, there are welding, brazing, and the like.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An air spring container according to an embodiment of the present invention is shown in FIG.
There is. In one embodiment of the present invention, the structure of the core 21 is as shown in FIG. The core 21 has a ring shape obtained by doubly winding a wire. The core material 21 is formed, for example, by vulcanization bonding on the first opening 1 of the diaphragm 12 shown in FIG.
7 and the second opening 19. In the embodiment of the present invention, since the core 21 is double-wound, the core 21 does not need to be connected to one end 23 and the other end 25 of the core 21 by caulking. Of the diaphragm can be maintained to some extent, and it is possible to prevent the first and second openings of the diaphragm from spreading. Therefore, according to the embodiment of the present invention, it is possible to eliminate the need for the connecting step by caulking in the manufacturing process of the core 21.

When the pressure change in the air spring container 10 during use of the air spring container 10 is large and the core 21 may be deformed, the space between the wires 27 (for example, arrow A)
Is preferably fixed by, for example, arc welding.

FIG. 2 shows another example of the core material 21 which can be used in one embodiment of the present invention. The core material 21 is formed into a ring shape in which a wire is double-wound, and then processed by pressing. The upper wire is represented by a wire 27a, and the lower wire is represented by a wire 27b. FIG. 3 is a cross-sectional view of the core 21 taken along line XX in FIG. By pressing, the cross-sectional shape of the core material 21 is processed into a circular shape. The cross-sectional shape of the core 21 may be a square as shown in FIG. When the cross-sectional shape of the core material 21 is a circle or a square, it is possible to favorably make contact with the other party.

FIG. 5 shows one end 2 of the core 21 shown in FIG.
It is an enlarged view which shows 3 and the other end part 25. One end 23 and the other end 25 are tapered. Thereby, at the time of press working, the gap 29 between the one end 23 and the wire and the gap 31 between the other end 25 and the wire are small,
Or can be eliminated. Therefore, the portion where the ends 23 and 25 of the core material 21 are located can be formed in the same shape as the other portions. Therefore, the contact with the other party can be made uniform.

If the pressure inside the air spring container 10 changes greatly when the air spring container 10 is used and the core 21 may be deformed, the wires 27a and 27b shown in FIG. (For example, indicated by arrow A). Further, it is preferable that the gaps 29 and 31 shown in FIG. 5 be subjected to, for example, dig welding, and the one end 23 and the other end 25 be fixed to the wire.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a core 21 provided in an air spring container according to an embodiment of the present invention.

FIG. 2 is a perspective view of another example of the core member 21 provided in the air spring container according to one embodiment of the present invention.

FIG. 3 is an example of a cross-sectional view of the core material 21 taken along line XX in FIG. 2;

FIG. 4 is another example of a cross-sectional view of the core material 21 taken along line XX in FIG.

FIG. 5 is an enlarged view showing one end 23 and the other end 25 of the core 21 shown in FIG.

6 is a sectional view of the air spring container 10. FIG.

FIG. 7 is a perspective view of an example of a core 21 provided in the air spring container.

FIG. 8 is a perspective view of an automobile showing an attached state of an air spring container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Wheel 10 Container for air spring 12 Diaphragm 13 1st connection part 15 2nd connection part 17 1st port 19 2nd port 21 Core 23 One end 25 The other end 27 Wire 29, 31 Gap 33 Caulking

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3D001 AA00 DA02 3J045 AA02 AA03 AA10 BA02 CB10 CB14 EA10 3J069 AA01 AA30 CC10 DD48

Claims (4)

[Claims] 1. A container for an air spring for a vehicle, comprising an elastic member, wherein a volume of the container for the air spring is changed by expansion and contraction of the elastic member, and a first opening of the elastic member is a body side of the vehicle. The second port of the telescopic member is connected to the wheel side of the vehicle, the air spring container is further attached to the first and second ports of the telescopic member, and the first and second An air spring container comprising a core material for preventing the mouth from spreading, wherein the core material has a ring shape in which a wire is wound twice or more. 2. The air spring container according to claim 1, wherein the core has a circular or square cross-sectional shape. 3. The air spring container according to claim 1, wherein an end of the core material has a tapered shape. 4. The air spring container according to claim 1, wherein the wires are fixed to each other.