JP2003139185A - Bare bellows type air spring and vehicle height adjusting suspension device by use of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bare bellows type air spring of single body completion type which securely and speedily changes a vehicle height adjusting suspension device into a vehicle height adjusting suspension device at low cost by easy work by effectively utilizing a pure suspension device mounted currently on a vehicle, and also provide the vehicle height adjusting suspension device by use of the bare bellows type air spring. SOLUTION: If the current pure suspension device of a vehicle is composed of a coil spring and a shock absorber, the pure coil spring is removed and the bare bellows type air spring is inserted merely to change the vehicle height adjusting suspension device very easily, securely, and quickly by effectively utilizing members mounted currently on the vehicle such as a pure upper mount and the shock absorber as they are without remodeling or changing a basic structure of a vehicle main body.Since a function of the bare bellows type air spring has a completion structure as a single body, it can be applied to the other vehicle and can be speedily and inexpensively mounted thereon without remodeling and changing a vehicle body and suspension device constituent parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bare bellows type air spring and a vehicle height adjusting suspension system using the air spring, and in particular, an existing general-purpose type air spring is improved so that it can be mounted by an extremely simple insertion method. It is a vehicle height adjustment suspension system.

[0002]

2. Description of the Related Art A conventional vehicle height adjusting suspension system includes a shock absorber and a spring, which are hydraulic cylinders each having a telescopic shaft having a piston with a valve connected to a rear end thereof, a spring tray plate for holding the spring, and a vehicle body. What is comprised by the upper mount for attaching to is commercially available.

In the above-described conventional vehicle height adjusting suspension device, the spring has a coil spring type and an air spring type. In the case of the coil spring type vehicle height adjusting suspension device, the coil spring is attached by moving the saucer plate up and down. It was a vehicle height adjusting suspension system of a type in which the vehicle height was arbitrarily set by moving the position up and down. Further, in the case of the air spring type vehicle height adjusting suspension device, since the bellows type air springs having the upper and lower closing plates, which are generally commercially available, are used, the upper and lower closing plates themselves need to be complicatedly processed, Separately manufactured shock absorber expandable shaft insertion hole and upper end body that forms the O-ring fitting hole for sealing are screwed with two nuts to the upper closing plate, and the separately manufactured air spring is attached to the processed lower closing plate. The lower end body that forms the saucer was screwed with four bolts.

Further, since a bellows type air spring having the above-mentioned closing plate, which is a commercially available product, is used, a condition for additionally processing the upper and lower closing plates is added, and the upper and lower end bodies separately manufactured from the upper and lower closing plates are added. This involves a process of screwing and sealing, and as a result, O-rings for sealing are often used in each part, which not only complicates the structure but also requires a lot of time for the manufacturing process and the assembly process, which is troublesome. In addition, the compression, tension, bending, and shear loads that occur during traveling are supported by only two bolts on the upper and lower end bodies and four bolts on the lower end body, so reinforcement measures for this are required. there were.

The air spring and a shock absorber manufactured separately are fixed by screwing, and since they are an integrated vehicle height adjusting suspension device, they have a structure that does not function as a single air spring, and are diverted to other vehicles. It required a major modification.

[0006]

Since the conventional coil spring type vehicle height adjusting suspension system has a structure in which the vehicle height is adjusted by moving the spring tray plate holding the coil spring up and down, the vehicle is temporarily stopped. It takes a lot of time and troublesome work to raise the vehicle body by using the jack and remove the tires and then to adjust it with a special tool. Although it could not be adjusted, the bare bellows type air spring of the present invention and the vehicle height adjustment suspension system using the bare bellows type air spring of the present invention are easy work surely and quickly installed on the vehicle. A bare-bellows type air suspension unit that can be used as a vehicle height adjustment suspension system at an inexpensive cost by effectively utilizing the suspension system. There is provided a vehicle height adjustment suspension system using a ring and Beaberozu type air spring.

[0007]

The present invention was invented as a result of earnest research for solving the above-mentioned problems, and the present genuine vehicle suspension system is composed of a coil spring and a shock absorber. If you have a genuine coil spring, you can simply remove the genuine coil spring and insert a bare bellows type air spring, without modifying or changing the basic structure of the vehicle body. It is possible to change the vehicle height adjustment suspension device very easily, reliably and quickly by utilizing it, and since the function of the bare bellows type air spring is completed as a single unit, it can be diverted to other vehicles. Allows quick and inexpensive mounting without any changes to the vehicle body and suspension system components It was an invention.

A feature of the present invention is that a flange joint type first plate body 3 for closing, a flange joint type second plate body 4 for closing, and a flange flange joint for closing which close the openings at the upper and lower ends of the bare bellows portion 21. Mold third plate body 5,
And a bare-bellows-type air spring having a closing flange joint type fourth plate body 6 and formed as a single body.
The plate body 3, the closing flange joint type second plate body 4, the closing flange joint type third plate body 5, and the closing flange joint type fourth plate body 6 are arranged on the concentric circles of the shock absorber telescopic shaft insertion holes. A blockage having a bare bellows type air spring, characterized in that individual screw-through holes or female screw holes are formed in the direction of expansion and contraction of the air spring, and are formed in the shape of a flange joint, and have a through hole 3a for the shock absorber expansion / contraction shaft. The flange joint type first plate body 3 and the closing flange joint type second plate body 4 sandwich the upper opening outer edge portion 2a of the bare bellows portion 21, and the bolt 11 is inserted into the through hole 3c for screwing.
a is penetrated and screwed into the female screw hole 4a formed in the closing flange joint type second plate body 4, and the lower opening outer edge portion 2b of the bare bellows portion 21 has the same closing flange as the upper opening outer edge portion 2a. Through-hole for insertion and screwing by a closing flange joint-type fourth plate body 6 having a joint-type third plate body 5, a shock absorber shaft insertion hole 6a, and a concave cylindrical mounting hole 6d for holding the shock absorber case 10b. 6 c is provided with a bare bellows type air spring, which is characterized in that a bolt 11 a is penetrated through 6c and is screwed into a female screw hole 5 a formed in a closing flange joint type third plate body 5, and a closing flange joint type first plate is provided. At least one of the body 3 and the closing flange joint type fourth plate body 6 has one or more air supply / exhaust air valve mounting portions. d is provided on the side surface of the insertion hole of the shock absorber shaft formed in the closing flange joint type first plate body 3 and the closing flange joint type fourth plate body 6 to prevent air leakage in the air chamber 2c. A bare bellows type air spring is provided which is formed with fitting grooves 7a for each of the two mounted quad-type links 7. The bottom of the closing flange joint type fourth plate body 6 is A concave cylindrical mounting hole 6d for inserting and holding the existing genuine shock absorber case 10b is formed so that the shock absorber 10b can be inserted and held without being fixed to the closing flange joint type fourth plate body 6. It is equipped with a bare bellows type air spring characterized in that it is formed at the bottom of the closing flange joint type fourth plate body 6. The concave bell-shaped air spring 2 is provided with a bare bellows type air spring characterized in that the depth dimension of the concave mounting hole 6d can be arbitrarily set and changed. Flange joint type first plate body 3, closing flange joint type second plate body 4, closing flange joint type third plate body 5 and closing flange joint type fourth plate for closing the openings at the upper and lower ends of Bare bellows type air spring provided with body 6, expandable shaft 10a of genuine shock absorber and closing flange inserted into the through holes of closing flange joint type first plate body 3 and closing flange joint type first plate body 6 A genuine shock absorber case 10b is provided in the concave cylindrical mounting hole 6d of the joint-type fourth plate body 6. The shock absorber body 10 is configured to be inserted and mounted, and the upper mount 12 that can be attached to the vehicle body 14 and supports the tip end of the expandable shaft 10a of the shock absorber body 10 is a genuine part. It is characterized in that it is configured to be usable, and at least one of the closing flange joint type first plate body 3 and the closing flange joint type fourth plate body 6 is provided with 1
At least one air supply / exhaust air valve mounting portion 3d is provided, and the air supply / exhaust passage is connected to the air supply / exhaust air valve mounting portion 3d. The present invention provides a bare bellows type air spring and a vehicle height adjusting suspension device using the bare bellows type air spring, which are characterized in that they can be operated in a vehicle compartment.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings. In the drawings, FIG. 1 is a central longitudinal sectional view of a vehicle height adjusting suspension system using a bare bellows type air spring according to the present invention. FIG. 2A is a front view of the bare bellows type air spring according to the present invention. Figure 2
(B) is a plan view of a bare bellows type air spring according to the present invention. FIG. 2C is a bottom view of the bare bellows type air spring according to the present invention. FIG. 3 is FIG.
It is an AA sectional view taken on the line of (B). FIG. 4 is a schematic configuration diagram of an air supply path to the bare bellows type air spring in the present invention. FIG. 5 is a central longitudinal sectional view showing a modified example of a vehicle height adjusting suspension device using a bare bellows type air spring according to the present invention.

As shown in FIGS. 1 to 3, a vehicle height adjusting suspension system 1 includes a genuine upper mount 12 provided in a vehicle,
The shock absorber body 10 is mounted on the upper mount 12, and the bare bellows type air spring 2 is assembled to the shock absorber body 10.

In the vehicle height adjusting suspension system 1 shown in the drawings,
Although the bare bellows portion 21 having a waist is used, the present invention is not limited to this, and it is possible to use a bellows type air spring and a sleeve type air spring having no waist.

Since the cross-sectional shape of the bare bellows type air spring 2 is circular, the closing flange joint type plate body for sealing the air introduced therein is also disk-shaped, and has a total of four configurations. ing. The structure is such that the entire circumference of the circular outer edge of the upper opening 8 of the bare bellows portion 21 can be sealed uniformly and with a sufficient tightening force.

A female screw hole formed in the closing flange joint type second plate body 4 with a set of the closing flange joint type first plate body 3 and the closing flange joint type second plate body 4 by a bolt 11a. It is clamped by being screwed to 4a, and similarly, the lower opening 9 is closed by the flange joint type third
The plate body 5 and the closing flange joint type fourth plate body 6
One set is bolted to a female screw hole 5a formed in the closing flange joint type third plate body 5 with a bolt 11b, and is clamped and pressed.

As described above, the simple and reliable structure in which the bare bellows portion 21 is sandwiched and pressure-contacted directly by the closing flange joint type plate body without interposing other members has excellent unit rigidity and hermeticity as compared with the conventional air spring. Since it is secured and has a simple structure, its productivity is also excellent.

The closing flange joint type first plate body 3 has a shock absorbing telescopic shaft 10a at the center thereof.
The insertion hole 3a is formed, and the insertion hole side surface 3b is provided with the fitting groove 7a for the two quad type rings 7. Six threaded through holes 3c are formed on the concentric circle of the insertion hole 3a along the expansion and contraction direction of the bare bellows type air spring 2, and the side surface of the bare bellows type air spring 2 is formed.
Air supply / exhaust air valve attachment part 3d for supplying / exhausting air
Is provided.

The closing flange joint type second plate body 4 is paired with the closing flange joint type first plate body 3 to sandwich and press the upper opening outer edge portion 2a of the bare bellows type air spring 2 by screwing. Therefore, six screwing female screw holes 4a are formed at positions facing the six screwing through holes 3c formed in the closing flange joint type first plate body 3.

The closing flange joint type third plate body 5 is paired with the closing flange joint type fourth plate body 6 to sandwich and press the lower opening outer edge portion 2b of the bare bellows type air spring 2 by screwing. Therefore, six screwing female screw holes 5a are formed at positions facing the six screwing through holes 6c formed in the closing flange joint type fourth plate body 6.

An insertion hole 6a for the expandable shaft 10a of the shock absorber is formed in the center of the convex portion of the upper surface of the closing flange joint type fourth plate body 6, and 2 is formed on the side surface 6b of the insertion hole.
A fitting groove 7a for each quad-type ring 7 is provided.

On the concentric circle of the insertion hole 6a, six threaded through holes 6c are formed along the expansion and contraction direction of the bare bellows type air spring 2, and a concave cylindrical shock absorber mounting hole 6d is formed in the center of the lower surface. And the mounting hole 6d
On the concentric circles, six threaded through holes 6c are formed along the expansion and contraction direction of the bare bellows type air spring 2.

The shock absorber body 10 includes an expandable shaft 10 having a shock absorber case 10b having a hydraulic cylinder function and a piston sliding at a rear end thereof.
The shock absorber case 10b having a is inserted into the concave cylindrical mounting hole 6d on the lower surface of the closing flange joint type fourth plate body 6 of the bare bellows type air spring 2.

The telescopic shaft 10a is inserted through an insertion hole 6a formed in the central portion of the upper surface of the closing flange joint type fourth plate body 6, and is inserted through the center of the quad type ring 7 fitted in the fitting hole 7a. And an insertion hole 3a formed in the central portion of the closing flange joint type first plate body 3
Through the center of the quad-type ring 7 fitted in the fitting hole 7a, and attached to the upper mount 12 of the vehicle body 14 by the shock absorber telescopic shaft screwing nut 1.
It is screwed at 3. In this manner, air leakage from the sliding portion of the telescopic shaft 10a is reliably prevented by the four quad-type rings 7 that have high hermeticity and durability in the sliding direction and the rotating direction.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a bare bellows type air spring according to the present invention and a vehicle height adjusting suspension system using the bare bellows type air spring are actually attached will be described below with reference to FIGS. .

First, the closing flange joint type second plate body 4 is passed through the upper opening outer edge portion 2a of the bare bellows type air spring 2, and then the closing flange joint type first plate body 3 is combined with the bare bellows type air. The bolts 11a are inserted through the six screw-through holes 3c formed in the closing flange joint type first plate body 3 with the upper opening outer edge portion 2a of the spring 2 interposed therebetween, and the closing flange joint type second plate body is formed. 4 was screwed into the female screw hole 4a. As a result, the outer edge portion 2a of the upper opening of the bare bellows type air spring 2 is crushed to ensure the airtightness of the air chamber 2c of the bare bellows type air spring 2.

Next, two quad-type rings 7 each having a small amount of grease applied to the fitting grooves 7a formed in each of the first flange plate type 3 for closing flange joint and the fourth plate member 6 for flange closing type. A total of 4 pieces were inserted each. When the expandable shaft 10a of the shock absorber 10 is inserted through the central portion of the quad ring 7, the quad ring 7 is crushed and the air chamber 2c of the bare bellows type air spring 2 is kept airtight.

Next, after passing the closing flange joint type third plate body 5 through the lower opening outer edge portion 2b of the bare bellows type air spring 2, the closing flange joint type fourth member.
In combination with the plate body 6, the lower opening outer edge portion 2b of the bare bellows type air spring 2 is sandwiched, and the bolts 11b are passed through the six threaded through holes 6c formed in the closing flange joint type fourth plate body 6, It was screwed into the female screw hole 5a formed in the closing flange joint type third plate body 5. As a result, the outer edge portion 2b of the lower opening of the bare bellows type air spring 2 is crushed to ensure the airtightness of the air chamber 2c of the bare bellows type air spring 2. Next, an air valve (not shown) was screwed to the air supply / discharge air valve mounting portion 3d formed on the side surface of the closing flange joint type first plate body 3.

When the vehicle height adjusting suspension system 1 assembled in this way is mounted on the vehicle body 14, first, the genuine upper mount 12 and the genuine coil spring (see FIG. 2) are installed from the genuine suspension system (not shown) mounted on the vehicle body 14. After removing (not shown), the bare bellows type air spring 2 is attached to the end of the expansion shaft 10a of the genuine shock absorber 10.
The quad type is inserted through the concave cylindrical mounting hole 6d formed in the lower surface of the fourth flange body type 6 plate body for closure, and is inserted into the fitting hole 7a formed in the upper surface of the fourth plate body body 6 for closure flange joint type. The ring 7 is inserted through the central portion thereof, and the fitting hole 7 is further formed in the closing flange joint type first plate body 3.
The central portion of the quad type ring 7 fitted in a was inserted, and then the concave cylindrical mounting hole 6d formed in the lower surface of the closing flange joint type fourth plate body 6 was inserted into the genuine shock absorber case 10b.

In this way, the tip end of the expandable shaft 10a of the shock absorber body 10 penetrating the bare bellows type air spring 2 is inserted into the central shaft holding part of the genuine upper mount 12, and the shock absorber expandable shaft screwing nut 13 is used. Screwed together.

Although the above embodiment is applied to the genuine suspension system, the present invention is not limited to this.
It should be noted that even in the case of the coil spring type vehicle height adjusting suspension device, it is possible to attach the suspension device by the same procedure. Further, in the above embodiment, the case where the genuine shock absorber case 10b is inserted into the concave cylindrical mounting hole 6d formed on the lower surface of the closing flange joint type fourth plate body 6 is illustrated, but the present invention is never the case. The present invention is not limited to this, and the concave cylindrical mounting hole 6d can be mounted by a press-fitting method by matching the inner diameter with the outer diameter of the shock absorber case 10b.

When air is supplied to or discharged from the air chamber 2c in the bare bellows type air spring 2, an air tank 16 and a compressor 15 connected to the air tank 16 are mounted on the vehicle body 14 as shown in FIG. By introducing an air supply / exhaust passage into the vehicle compartment and providing an opening / closing valve (not shown), it is possible to easily supply / exhaust air from the vehicle interior to the vehicle height adjusting suspension device 1.

The operation of supplying / exhausting air to / from the vehicle height adjusting suspension system 1 is carried out at the discretion of the user, and the vehicle height is adjusted according to the road surface condition and the load condition of the occupant and the load at that time so that comfortable operation can be performed. I was able to.

[0031]

According to the bare bellows type air spring and the vehicle height adjusting suspension device using the bare bellows type air spring of the present invention, as described above, the bare bellows of the vehicle height adjusting suspension device 1 can be operated by a simple operation in the room. By adjusting the air pressure of the air chamber 2c in the air spring 2, there is an effect that the vehicle height can be adjusted to an arbitrary vehicle height desired by the user. Therefore, it is extremely easy as compared with the coil spring type vehicle height adjusting suspension device. In addition, the vehicle height can be adjusted in a short time.

The bare bellows type air spring 2
When the genuine upper mount 12 and the genuine shock absorber 10 are used only by using only, there is an effect that they can be implemented at a lower cost than a vehicle height adjustment suspension system including all suspension system components.

Further, although the genuine upper mount 12 and the shock absorber 10 are used in the above embodiment, the present invention is not limited to this, and the coil spring type vehicle height adjusting suspension device is already mounted. If so, it can be performed as described in the example of the assembling procedure of the above embodiment, or an upper mount (not shown) separately manufactured and the shock absorber case 17 shown in FIG. 5 may be used. , Wide range of use. That is, there is an effect that the height of the vehicle can be set according to the user's desire by adjusting the size of the shock absorber case 17, which is manufactured separately.

Further, according to the present invention, the inner diameter of the concave cylindrical mounting hole 6d formed on the lower surface of the closing flange joint type fourth plate body 6 is matched with the outer diameter of the shock absorber case 17 which is separately manufactured. This makes it possible to use a press-fitting mounting method. In this way, when using the vehicle height adjustment suspension system including all suspension system components as an integrated unit, it is possible to avoid the risk of replacing genuine coil springs and other coil springs and to shorten the work time. There is.

Further, according to the present invention, the air supply / exhaust air valve mounting portion 3d is formed on the side surface of the closing flange joint type first plate body 3, but it is not limited to this forming portion. A bottom surface or a side surface of the closing flange joint type fourth plate body 6, and the closing flange joint type first
It may be provided on any of the upper surfaces of the plate body 3, and there is an effect that the mounting work can be further facilitated by selecting it depending on the shape of the vehicle on which the vehicle height adjusting suspension device of the present invention is mounted.

As described above, according to the bare bellows type air spring of the present invention and the vehicle height adjusting suspension system using the bare bellows type air spring, the vehicle height can be easily and reliably adjusted quickly without using a dedicated tool. Can
The genuine suspension system or the coil spring type vehicle height adjustment suspension system currently in use is not modified at all to the basic structure of the vehicle body, and the components such as the upper mount and shock absorber already mounted on the vehicle are installed. It has a very special effect that it can be effectively used and changed to a vehicle height adjusting suspension system.

[Brief description of drawings]

FIG. 1 is a central longitudinal sectional view of a vehicle height adjusting suspension system using a bare bellows type air spring according to the present invention.

FIG. 2 (a) is a front view of a bare bellows type air spring according to the present invention.

FIG. 2 is a plan view of a bare bellows type air spring according to the present invention.

FIG. 2 is a bottom view of a bare bellows type air spring according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a schematic configuration diagram of an air supply path to a bare bellows type air spring in the present invention.

FIG. 5 is a central longitudinal sectional view showing a modified example of a vehicle height adjusting suspension system using a bare bellows type air spring according to the present invention.

[Explanation of symbols]

1. Vehicle height adjustment suspension device 2. Bare bellows type air spring 21. Bare bellows 2a. Upper opening outer edge 2b. Outer edge of lower opening 2c. Air chamber 3. Closure flange joint type first plate body 3a. Insertion hole 3b. Side of insertion hole 3c. Through hole 3d. Air valve mounting part for air supply and exhaust 4. Blocking flange joint type second plate body 4a. Female screw hole 5. Closure flange joint type third plate body 5a. Female screw hole 6. Closure flange joint type fourth plate body 6a. Insertion hole 6b. Side of insertion hole 6c. Through hole 6d. Mounting hole 7. Quad ring 7a. Fitting groove 8. Upper opening 9. Lower opening 10. Shock absorber body 10a. Telescopic shaft 10b. Genuine shock absorber case 11a. bolt 11b. bolt 12. Upper mount 13. Shock absorber Telescopic shaft screwing nut 14. Car body 15. compressor 16. Air tank 17. Shock absorber case

Claims (10)

[Claims] 1. A closing flange joint type first plate body 3, a closing flange joint type second plate body 4, a closing flange joint type third plate body 5, for closing the openings at the upper and lower ends of the bare bellows portion 21. And closure flange joint type 4th
A bare bellows type air spring having a plate body 6 and formed as a single body. 2. A closing flange joint type first plate body 3, a closing flange joint type second plate body 4, a closing flange joint type third plate body 5, and a closing flange joint type fourth plate body 6, respectively. 6. The bare bellows according to claim 1, wherein the shock absorber expandable shaft insertion hole has six screw through holes or female screw holes formed in a concentric circle in the expansion and contraction direction of the air spring so as to form a flange joint. Type air spring. 3. A closing flange joint type first plate body 3 having an insertion hole 3a for a shock absorber telescopic shaft.
And the closing flange joint type second plate body 4 sandwiches the upper opening outer edge portion 2a of the bare bellows portion 21,
The bolt 11a is passed through the threaded insertion hole 3c and screwed into the female screw hole 4a formed in the closing flange joint type second plate body 4, and the lower opening outer edge portion 2b of the bare bellows portion 21 is also the upper opening outer edge. Similar to the portion 2a, the closing flange joint type third plate body 5 and the closing flange joint type fourth plate body 6 having the shock absorber shaft insertion hole 6a and the concave cylindrical mounting hole 6d for holding the shock absorber case 10b. Through hole 6c sandwiched and screwed
Through the bolt 11b to the closing flange joint type third
The bare bellows type air spring according to claim 1, which is screwed into a female screw hole 5a formed in the plate body 5. 4. At least one of the closing flange joint type first plate body 3 and the closing flange joint type fourth plate body 6 is provided with one or more air supply / exhaust air valve mounting portions 3d. , Blocking flange joint type first plate body 3 and Blocking flange joint type fourth plate body 6
On the side surface of the insertion hole of the shock absorber shaft formed in the above, there are formed fitting grooves 7a for two quad-type rings 7 each mounted for preventing air leakage in the air chamber 2c. The bare bellows type air spring according to claim 1. 5. The genuine shock absorber case 10 of the vehicle body 14 has a bottom portion of the closing flange joint type fourth plate body 6.
A concave cylindrical mounting hole 6d for inserting and holding the shock absorber 10b in the b is formed so that the shock absorber 10b can be inserted and held in the closing flange joint type fourth plate body 6 without being fixed. The bare bellows type air spring according to claim 1. 6. The depth dimension of a concave cylindrical mounting hole 6d formed in the bottom of the closing flange joint type fourth plate body 6 can be arbitrarily set and changed. Bare bellows type air spring. 7. A retractable bare bellows type air spring 2, and a closing flange joint type first plate body 3 and a closing flange joint type second plate for closing the upper and lower openings of the bare bellows type air spring 2. Body 4,
Bare bellows type air spring having a closing flange joint type third plate body 5 and a closing flange joint type fourth plate body 6, a closing flange joint type first plate body 3 and a closing flange joint type fourth plate body Telescopic shaft of genuine shock absorber that is inserted through the insertion hole of 6
0a and the closing cylindrical fitting hole 6d of the flange joint type fourth plate body 6 into the genuine shock absorber case 1
A vehicle height adjusting suspension system using a bare bellows type air spring, characterized in that the shock absorber main body 10 having 0b is inserted and mounted. 8. The upper mount 12 which can be attached to the vehicle body 14 and supports the distal end portion of the telescopic shaft 10a of the shock absorber body 10 is configured so that genuine parts can be used. Vehicle height adjustment suspension system. 9. At least one of the closing flange joint type first plate body 3 and the closing flange joint type first plate body 6 is provided with one or more air supply / exhaust air valve mounting portions 3d. The vehicle height adjusting suspension device according to claim 7, wherein an air supply / discharge passage is connected to the air supply / exhaust air valve mounting portion 3d. 10. The vehicle height adjusting suspension system according to claim 7, wherein the opening / closing valve operation of the air supply / exhaust passage is configured to be operable in the vehicle compartment.