JP3054156U - Cloth bellows. - Google Patents

Abstract

(57) [Abstract] [Object] To form a round bellows made of cloth and a square bellows made of cloth having excellent rigidity against external force by using a donut-shaped resin sheet material or a square frame-shaped resin sheet material as an aggregate. [Constitution] A plurality of donut-shaped resin sheet materials and a rectangular frame-shaped resin sheet material having an outer peripheral length larger than an inner peripheral length of a cylindrical body formed by overlapping and joining a cover cloth coated with a rubber-like elastic material. Are arranged at a substantially constant pitch.

Description

[Detailed description of the invention]

Conventionally, as shown in FIG. 1 and FIG. 2, a cover cloth coated with a rubber elastic material is overlapped and joined to a circumferentially stretchable tubular body 3 having an inner peripheral length. A cloth round bellows 1 and a cloth square bellows 2 each having a plurality of round rings 4 or square rings 5 having a larger outer circumference inserted at a predetermined pitch are widely used. The round ring 4 and the square ring 5, which are the constituent materials of the cloth round bellows and the cloth square bellows 2, are easily deformed by external force on the cloth round bellows and the cloth square bellows, depending on the diameter and material. It had drawbacks, and there was a problem due to insufficient strength against external forces.

In order to solve the above drawbacks, the present invention has conducted intensive studies and has developed a round bellows made of cloth and a square bellows made of cloth which are excellent in rigidity against external force, which is a problem of the conventional method. A cover cloth coated with a rubber-like elastic material is cut obliquely and joined together, or a knitted knitted cloth-coated cover cloth is cut and overlapped and joined, and each has a cylindrical body 3 having elasticity in the circumferential direction. The purpose of the present invention is to replace the conventional round ring 4 and square ring 5 as the frame members for the purpose of mounting inside with a cloth round bellows and a cloth square bellows with the aim of significantly increasing the rigidity against external force. As shown in FIG. 3, a plurality of donut-shaped resin sheet members 8 having an outer peripheral length larger than the inner peripheral length of the cylindrical body 3 and having a difference between an outer diameter and an inner diameter of at least 8 mm, a perspective view, and a diagram. 4. A round bellows made of cloth and a square bellows made of cloth, wherein a plurality of rectangular frame-shaped resin sheet materials 9 each having a difference of at least 8 mm between the outer surface and the inner surface shown in 4 are arranged at a substantially constant pitch.

[Brief description of the drawings]

Fig. 1 Conventional round bellows made of cloth

Fig. 2 Conventional square bellows made of cloth

FIG. 3 is a cloth round bellows of the present invention.

FIG. 4 is a cloth square bellows of the present invention.

[Explanation of symbols]

 1 Conventional cloth round bellows 2 Conventional cloth square bellows 3 Cylindrical body 4 Round ring 5 Square ring 6 Fabric round bellows of the present invention 7 Fabric square bellows of the present invention 8 Donut-shaped resin sheet material 9 Square frame resin Sheet material

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[Procedure amendment]

[Submission date] March 10, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 4

[Correction method] Change

[Correction contents]

4. A tubular body according to claim 1 or 2, wherein a cover fabric obtained by coating a knitted knitted fabric with a rubber-like elastic material is cut, overlapped, and joined, and has elasticity in the circumferential direction. Cloth bellows.

[Procedure amendment]

[Submission date] June 10, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 4

[Correction method] Change

[Correction contents]

Claims (4)

[Utility model registration claims] 1. A plurality of donut-shaped resin sheets having an outer peripheral length larger than an inner peripheral length thereof are provided at a substantially constant pitch in a cylindrical body formed by overlapping and joining cover cloths coated with a rubber-like elastic material. Round bellows made of cloth arranged in. 2. A plurality of rectangular frame-shaped resin sheets having an outer peripheral length larger than an inner peripheral length thereof are fixed to a cylindrical body formed by overlapping and joining cover cloths coated with a rubber-like elastic body. Fabric square bellows arranged at a pitch. 3. The cylindrical body according to claim 1 or 2, wherein a cover cloth coated with a rubber-like elastic material is obliquely cut and overlapped and joined, and has elasticity in its circumferential direction. Claims according to items 1 and 2. 4. A tubular body according to claim 1 or 2, wherein a cover fabric obtained by coating a knitted knitted fabric with a rubbery elastic material is cut, overlapped and joined, and has elasticity in the circumferential direction. Claims according to claims 1 and 2.