JP3048279U - Folding bellows with omnidirectional elastic cover material. - Google Patents

Abstract

(57) [Summary] [Purpose] A cover having elasticity in all directions is cut in an arbitrary direction, processed into a cylindrical shape, and a ring is inserted to form a foldable bellows with high elasticity. It is intended to be cut in any direction and used as a material. [Structure] A knitted woven fabric having elasticity in all directions, which is a main component of the present invention, is coated with a rubber-like elastic body, cut in an arbitrary direction, formed into a tubular body by lap joining, and formed by inserting a ring. Foldable bellows with omnidirectional elastic cover material.

Description

[Detailed description of the invention]

A conventional round bellows 1 shown in a perspective view of FIG. 1 is a metal ring (hereinafter referred to as a ring) on a cylindrical molded body 3 obtained by molding a cover material 2 having been subjected to a paste treatment into a cylindrical shape shown in a perspective view of FIG. 4) is formed. The cover material 2 of the conventional round bellows 1 is obtained by subjecting a plain woven cloth to a rubber or resin paste treatment. The cover material is cut obliquely in the weaving direction of the woven cloth, and the adhesive paste is formed into a tubular shape. The ring 4 is inserted into the cylindrical molded body 3 at a predetermined pitch. The inner peripheral length of the cylindrical molded body 3 is made smaller than the outer periphery of the ring 4 so that the ring 4 is A general manufacturing method is to form peaks and valleys between the plurality of rings 4 by the reaction force of the cover material 2 when inserted, so that the rings 4 are securely fixed. It is an essential condition that the cover material 2 is cut obliquely when forming the cylindrical molded body 3. When the cover material 2 is cut in parallel in the vertical and horizontal directions, when the ring 4 is inserted, Since it does not stretch, the height of the peaks and valleys is shallow, the stability of the inserted ring is poor, and the ring is easy to fall down. In addition, it has the disadvantage that it is difficult to obtain the large elasticity characteristic of bellows. Therefore, it is necessary to provide a cylindrical molded body for cutting and processing the cover material obliquely, and when manufacturing a long round bellows, if the length of the cover material 2 cut obliquely to the length is insufficient. It has disadvantages that require a lot of labor in processing as well as quality, such as adding by diagonal joining.

In order to solve the above-mentioned problems, the present inventors have conducted intensive studies, and have been required to solve the problem of the oblique cutting, which is a problem of the cover material 2 which is the main component of the conventional round Java 1. A new round bellows and a new square bellows mainly composed of a cover material (hereinafter referred to as an omnidirectional elastic cover) 10 made of a knitted knitted fabric having elasticity coated on a knitted fabric having omnidirectional elasticity did. The contents will be described below with reference to the drawings.

In the present invention, a round folding bellows 20 (hereinafter referred to as a new round bellows) containing an inner ring 11 shown in a perspective view of FIG. 3 and an inner ring 11 and an outer ring 12 shown in a perspective view of FIG. A round folding bellows with an outer ring (hereinafter referred to as a new round bellows with a new outer ring) 30, which is alternately mounted, a square folding bellows with an inner ring (not shown) into which a square inner ring is inserted, and Although not shown in the drawings, the present invention relates to an omnidirectional elastic cover 10 which forms the main body of a square folding bellows with an outer ring in which an inner ring and an outer ring are alternately mounted. The omnidirectional telescopic cover 10 that forms the bellows will be described. FIG. 5 is an enlarged view of an example of a woven structure of a knitted knitted cloth (hereinafter, referred to as a knitted cloth) 13 constituting the omnidirectional elastic cover 10. The knitted fabric 13 is made of a chemical fiber such as nylon, polyester, or vinylon, and is coated with a rubber-like elastic material to form the omnidirectional elastic cover 10. The omnidirectional elastic cover 10 exhibits the elasticity function while maintaining the required elasticity and strength in all directions due to the omnidirectional elasticity of the knitted cloth 13 and the elasticity and reinforcement of the rubber-like elastic body. . The knitted fabric 13 is desirably subjected to an adhesive treatment in advance in order to improve the adhesion to the rubber-like elastic material to be coated thereon. The omnidirectional elastic cover 10 obtained as described above is cut into a predetermined width and length in an arbitrary direction, and both ends in the width direction are overlapped and joined to form a cylindrical body 14 shown in the perspective view of FIG. A plurality of inner rings 11 having a longer circumferential length than the inner circumferential length thereof are inserted into the cylindrical body 14 so as to have a constant pitch interval to form a new round bellows 20 shown in the perspective view of FIG. On the other hand, a plurality of inner rings 11 having a longer circumference than its inner circumference are inserted into one cylindrical body 14, and an outer ring 12 having a shorter circumference than the inner circumference of the cylindrical body is inserted from the outside of the cylindrical body. As shown in FIG. 4, the inner ring 11 and the outer ring 12 are alternately combined and inserted so as to have a constant pitch interval between the rings, so as to form a new outer ring-containing round bellows 30 shown in the perspective view of FIG. Folding bellows with azimuthally stretchable cover material.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional round bellows.

FIG. 2 is a perspective view of a cylindrical molded body.

FIG. 3 is a perspective view of the new round bellows of the present invention.

FIG. 4 is a perspective view of the bellows with a new outer ring of the present invention.

FIG. 5 is an enlarged view showing an example of a weave structure of a knitted woven fabric;

FIG. 6 is a perspective view of a tubular body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conventional round bellows 2 Conventional cover material 3 Conventional cylindrical molded body 4 Ring 1 Sewing processing part 10 Omnidirectional elastic cover 11 Inner ring 12 Outer ring 13 Knitted cloth 14 Tubular body 20 New round bellows 30 New Round bellows with outer ring

Claims (3)

[Utility model registration claims] 1. A cover material obtained by coating a knitted cloth with a rubber elastic body using a yarn made of a chemical fiber, is cut into a predetermined width, and overlapped in the width direction to form a cylindrical body. A round folding bellows made of an omnidirectional elastic cover material, in which a plurality of metal round rings having a circumference longer than the inner circumference of the cylindrical body are inserted at a predetermined pitch interval. 2. A cover made of a knitted cloth coated with a rubber elastic body using a yarn made of a chemical fiber, cut into a predetermined width, and overlapped in the width direction to form a cylindrical body. An angular foldable bellows made of an omnidirectional elastic cover material formed by inserting a plurality of metal square rings having a circumferential length larger than the inner circumferential length of a cylindrical body at a predetermined pitch interval. 3. A tubular material formed by cutting a cover material formed by coating a rubber elastic material on a knitted cloth using a yarn made of a chemical fiber to a predetermined width, and overlapping and joining in a width direction. Then, a metal ring having a circumferential length larger than the inner circumferential length of the tubular body is inserted into the inner circumferential side of the tubular body, and metal rings smaller than the outer circumferential length of the tubular body are alternately arranged outside the tubular body. 3. The folding bellows according to claim 1, wherein a plurality of said bellows are inserted so as to have a predetermined pitch interval.