Air suspension

Abstract

The present invention provides a further improved air suspension. The air suspension holds the inosculation connection between the tubular film and the piston from breaking off even a strong tensile force is exerted based on the compression force. Furthermore the assembling ease between the crimping part of piston side and the piston is not damaged. The air suspension comprises the following components: a rubber tubular film (3), an upper plate (1) which is jointed with the upper part through airtight joint, and a piston (2) which is jointed with the lower part through airtight joint. Furthermore the piston (2) is formed with the peripheral surface (2B) of turnover barrel part (3D) which is formed through a mode of being able to guide the upper end part side to reciprocate along with the elastic deformation of tubular film (3) through a rolling mode, wherein, a pulling component (4B) is detachably installed. The pulling component can pull and clamp the piston side crimping part (3C) of tubular film (3) in whole part or approximate whole part of width direction relatively to the expansion moving direction of tubular film through the cooperative motion of crimping part (3C) and the edge part (10) of piston (2) which are collocated.

Description

technical field [0001] The present invention mainly relates to an air suspension used as a suspension device for trucks and passenger cars, and in particular, relates to a cylindrical membrane made of elastic material, and a large-diameter plate airtightly bonded to one end of the axial center direction. The piston is air-tightly bonded to the other end of the tubular film in the axial direction, and the piston is formed to roll and guide the other end side to be folded back with the elastic deformation of the tubular film. Surrounding air suspension. Background technique [0002] As such an air suspension, the structure disclosed in JP-A-10-325434 is known, such as this image 3 etc., include a large-diameter plate member (reference numeral 20), a piston (reference numeral 40) located below it, and a rubber cylindrical membrane (reference numeral 10) straddling them. Furthermore, the upper end beading portion (reference number 16) of the cylindrical rubber membrane is airt...

AI Technical Summary

Problems solved by technology

[0007] However, due to the increase in the suspension stroke and load caused by the increase in size and speed in recent years, when the tensile force of the piston caused by the torsional force, the torsional force, or the dual-purpose airbag also tends to increase further, both Considering the ease of assembly of the above-mentioned beading part and the possibility of the fall-off prevention and control device falling off, there is still room for improvement for the fitting connection structure of the cylindrical membrane and the piston.

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