JPS58105811A - Assembling method of air suspension - Google Patents

Abstract

PURPOSE:To prevent a ring from shifting when an upper tank is calked, by forming a controlling part of a ring position on a diaphragm. CONSTITUTION:An air chamber 7 is formed by installing a diaphragm 6, such as rubber between an upper tank 4 and a lower tank 5. The diaphragm 6 is installed on the lower tank 5 by a ring 10 and on the upper tank 4 by calking the upper tank 4 with a part of a ring 11. The ring 11 is secured by a controlling part 6a of a position of the diaphragm 6, and is not shifted when the upper tank is calked. With this, assembling is carried out reliably and assembling workability is improved.

Description

[Detailed Description of the Invention] The present invention is an automobile wheel suspension system! This article relates to a method of assembling an air suspension used as a first type of air suspension.

An air suspension used as a wheel suspension system for an automobile has a structure as shown in FIG. 1, for example.

That is, in FIG. 1, 1 indicates cylinder 2 and cylinder 2.
A shock absorber or a cylindrical telescopic member such as a strut consisting of a piston 3 fitted so as to be able to slide inside, and the piston 3 has a cylindrical upper tank 4 whose F side is open.
is fixed, and on the outer periphery of cylinder 2 there is a tube υ that is open at the top.
The lower tank 5 is fixedly attached to the upper tank 4 and the lower tank 5 by an earphragm 6 made of an elastic material such as rubber.
4. Connect to the trachea and connect these to the trachea. It has a structure in which an air chamber 7 is sealed around the outer periphery of the cylindrical expandable member 1 by a lower tank 5 and a diaphragm 6.

In such an air suspension, the end 1α of the cylindrical telescoping member 10F is attached to the wheel support member side, and the upper end 1b is attached to the submersible body side, and air is used to expand and contract the cylindrical telescoping member 1 as the wheel moves up and down. This buffer is provided by the volumetric elasticity of the air sealed in the chamber T.

In FIG. 1, 8 is a supply/discharge device plug, and 9 is a vehicle height sensor consisting of a combination of a drive magnet 9a and a reed switch 9b. By supplying air to the cylinder and draining the single cylinder, or by discharging the air in the air chamber 1 to lower the vehicle height, the height of the vehicle can be maintained at a predetermined value.

In an air suspension such as 1fci), the diaphragm 6 is first placed on the outer circumferential surface of the lower tank 5 with one end thereof, and a ring 10 is fitted around the outer circumference of the diaphragm 6, which is caulked to be airtightly fixed inside and outside of the lower tank 5. The other end of the diaphragm 6 is folded upward, and the ring 11 is applied to the inner peripheral surface of the other end of the diaphragm 6.The outer periphery of the diaphragm 6 is overlapped with the inner peripheral surface of the upper tank 4, and Usually, the upper tank 4 is caulked and assembled in an airtight manner.

However, in the above method for assembling the main 4 diaphragm, the work of fixing the ring 10 to the lower tank 5 involves attaching the ring 10 to the diaphragm 6.
This is relatively easy as it is applied to the outer peripheral surface of the diaphragm 6 and crimped, but when solidifying the upper tank 4, a thick ring 11 is fitted on the inner periphery p1 of the diaphragm 6. The upper tank 4 is placed over the upper tank 4, and a caulking jig is pressed from the outside of the upper tank 4 toward the center in the radial direction to plastically deform (caulk) the upper tank 4 to reduce its diameter, thereby fixing the upper tank 4.
It is extremely difficult to accurately check whether the ring 11 is in an overpressure position during the second crimping process.

If you try to swage the ring 11 with it still out of alignment,
There is a risk of damaging the diaphragm, and even if you swage it in place, you will not be able to obtain sufficient fixing force, which is dangerous.

In order to deal with the above-mentioned problems, the present invention has provided a ring position 1 & a guide fin α needle such as a protrusion or step at the position where the ring 11 of the diaphragm 6 is to be fitted, as shown in FIGS. 2 and 6. The ring 1 is formed on the body by the ring position 1d regulating part 6a.
1 is firmly held at a predetermined value 1t, the upper tank 4 is reduced in diameter i! :I: It is modified so that the diaphragm 6 can be properly assembled.

In FIG. 2, reference numeral 12 indicates a piece of a crimping jig.

As shown above, a ring position regulating part is integrally formed with a VC in advance on a cylindrical membrane made of a material such as rubber, and a GTU4i ring is formed at the regulating part at the ring position. According to the present invention, which fixes the upper tank by plastically deforming it from the outside IUil of the diaphragm while holding the diaphragm, there is no risk of the internal ring shifting during work, and therefore the diaphragm fixing force is reduced. There is no risk of occurrence of variations in the tire diaphragm or damage to the tire diaphragm, and it is possible to perform accurate assembly and significantly improve assembly workability, which is of great value in terms of engineering.

In the illustrated embodiment, a cylindrical air chamber 7 is formed by the upper tank 4, lower tank 5, and diaphragm 6, but the lower tank 5 is omitted and the upper tank 4 is
There is a case where the air chamber 7 is formed by airtightly connecting the air chamber 7 and the outside black market of the shilling 2 with the diaphragm 6, and it is natural that the method of the present invention can be adopted in this case as well.

In this case, the method of fixing the diaphragm 6 to the outer circumference of the cylinder 2 is the same as the method of fixing it to the lower tank 5, in which the diaphragm 6 is directly caulked and fixed to the outer circumference of the cylinder 2 using the ring 10.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an example of an air suspension to which the present invention is applied, Fig. 2 is a sectional view showing an example of an assembly mode of the present invention, and Fig. 3 is a diaphragm to be attached to the present invention. It is a cutaway one-button diagram showing an example. DESCRIPTION OF SYMBOLS 1... Roasted elastic member, 2... Cylinder, 3... Piston, 4... Upper tank, 5... Lower tank,
6...Diaphragm, 6α...Ring position 171 control part, I...Air chamber, io, il...Ring. Above snout r2 Figure tjy 13 Figure = 60-

Claims (1)

[Claims] An upper tank fixed to the piston center is attached to the outer periphery of a cylindrical telescopic member consisting of a cylinder and a piston slidably fitted into the cylinder, and an upper tank and a lower tank fixed to the outer circumferential surface of the cylinder or the outer circumferential surface of the cylinder. I'm worried about it
In an air suspension in which an airtight air chamber is formed by connecting cylindrical diaphragms made of rubber or other flexible members, one end of the cylindrical diaphragm is fixed to the outer periphery of the ring or the outer periphery of the cylinder. A ring is fitted onto the outer periphery of the cylindrical lower tank, and the loose ring is swaged to secure the diaphragm airtightly.The other end of the diaphragm is folded upward, and the other end of the diaphragm is integrally attached to the inner periphery of the diaphragm. A cylindrical upper tank is placed on the outer periphery of the diaphragm with the ring fitted and held in the formed ring position 1, and the upper tank is plastically deformed to reduce its diameter to be airtightly fixed and the main diaphragm is assembled. An air suspension assembly method characterized by: