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air suspension

A technology of air suspension and airtight bonding, applied in the direction of gas shock absorbers, etc., can solve the problem of inability to supply air

Inactive Publication Date: 2012-02-22
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When the opening 36 of the duct 35 is blocked by the stopper 34, a relatively large load is applied. Therefore, even if air is supplied to the air suspension part S in order to float the large-diameter plate member 31 again, the duct will The opening 36 of 35 is blocked by the stopper 34 with an increased load (the load per unit area is large), resulting in a problem that air cannot be supplied, so there is room for improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The air suspension A of embodiment 1 is used as the suspension device of truck and bus, as figure 1 , figure 2 As shown, the structure has an upper plate (an example of a large-diameter plate-shaped part) 1 fixed to a vehicle body frame, etc.; a piston 2 fixed to a part on the wheel side; a rubber ( a diaphragm (an example of a cylindrical film) 3 made of an elastic material; and a stopper 4 mounted and fixed on the upper wall 2A of the piston 2 .

[0034] The diaphragm 3 is a vertical cylinder having a longitudinal axis P for constituting its internal space (the space surrounded by the upper plate 1, the diaphragm 3, and the piston 2), that is, the side wall portion 3A of the air suspension part S. shaped rubber, which has an upper large-diameter beading portion 3B engaged and fixed to the upper plate 1 in a sealed fit state; and a lower small-diameter beaded portion 3C engaged and fixed to the upper part of the piston 2 in a sealed fit state; And it is rolled and gu...

Embodiment 2

[0044] Such as Figure 4 , Figure 5 As shown, in the air suspension A of the second embodiment, a plurality of cutouts 20 serving as the avoiding means K are formed, and the other parts are the same as those of the air suspension of the first embodiment. That is, if Figure 5 As shown, the avoiding device K is constituted by forming a total of three cutouts 20 (same as the cutouts 20 of the air suspension A of the first embodiment) at three locations corresponding to the respective hole portions 15 . The necessity, function and effect of this avoiding device K can be explained as follows.

[0045] In the air suspension A of Embodiment 1, a structure is adopted in which the stopper 4 is fixed to the piston 2 using three bolts 16 arranged at equal angular intervals around the axis P. In this regard, in the assembly process of the air suspension A, the relative arrangement of the stopper 4 to the piston 2 can have three assembly postures (relative postures of the stopper 4 an...

Embodiment 3

[0049] Such as Figure 6 , Figure 7 As shown, the air suspension A of Embodiment 3 can also be equipped with a circumferential groove (an example of a relief portion) 23 whose cross section is concave from the top of the stopper 4 and centered on the axis P, and communicates with the stopper 4. The avoidance device K constituted by the communication groove (an example of the communication passage) 24 on the outer surface 4S. For example, it is best when the inlet and outlet pipes 5 and a plurality of fixing bolts 7 are arranged on a radius r of the same size centered on the axis P, and the area of ​​the top view of the stopper 4 is allowed to the maximum, and, in In the contracted state, the interference between the inlet and outlet pipes 5 and the fixing bolts 7 and the supporting body 4A can be avoided, and the state of communication between the inlet and outlet 6 and the air suspension part S can be maintained. Additionally, if Figure 7 As shown by the dotted line in t...

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Abstract

The present invention provides an air suspension capable of enlarging the area of ​​a rubber stopper for durable use under severe load conditions, thereby eliminating the problem of clogging an air supply port to an air suspension unit. The air suspension has: a rubber-made cylindrical membrane (3), a large-diameter plate-shaped member (1) airtightly bonded to its upper end, a piston (2) airtightly bonded to the lower end, and on the piston (2) Formed with the surrounding surface (2B) of the folded tube part (3D) that can roll and guide the lower end side to be folded back with the elastic deformation of the tube-shaped film (3), it is provided with a large diameter plate-shaped member (1), The air suspension part (S) surrounded by the cylindrical membrane (3) and the piston (2) The large-diameter plate-shaped member (1) of the air intake and exhaust port (6) is a rubber stopper that restricts the downward movement above the specified limit The block (4) is loaded and fixed on the piston (2) in the state of interfering with the inlet and outlet (6) when viewed in the direction of the axis (P), and is equipped with a block ( 4) Compressed, also can enter and discharge air avoiding device (K) from inlet and outlet (6).

Description

technical field [0001] The present invention mainly relates to an air suspension used as a suspension device for trucks and buses. Specifically, it relates to a cylindrical membrane having an elastic material and a large-diameter plate that is airtightly bonded to one end of the axial center direction of the suspension. shaped member and a piston that is airtightly bonded to the other end of the cylindrical membrane in the axial direction, and the piston is formed to roll and guide the other end side to fold back with the elastic deformation of the cylindrical membrane. An air suspension is formed around the circumference of the folded tube portion. Background technique [0002] As such an air suspension, the structure disclosed in Patent Document 1 is known. That is, on the upper side of the piston (reference number 6), rubber is attached to limit the deformation of the diaphragm (reference number 2) as a cylindrical membrane beyond a certain level (the large-diameter plat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/05
Inventor 垣内洋一前村博之
Owner TOYO TIRE & RUBBER CO LTD