JP2006083914A - Hand clamp device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand clamp device to be a reliable product by preventing vibration and bending fatigue breakage of a both end turn up fixing part of a band main body. <P>SOLUTION: 1 indicates a belt shape band main body, 1a indicates one turn up terminal part and 2a indicates one locking part. One end 3a of a fastening member 3 such as a bolt is rotatably locked to the locking part 2a. 6 indicates a fastening member such as a spot welding and a rivet fixing one turn up terminal part 1a of the band main body 1. In this invention, a bending reinforcement plate 7 is overlaid on a boundary part Z of the band main body 1 and both turn up terminal parts 1a, 1b of the band main body 1, and is fixed as one body by a fastening member such as welding and fixing pin. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a band clamp device that uniformly clamps and fixes hoses, ducts, and the like from the circumference, and more particularly to a band clamp device that prevents vibration and bending fatigue breakage at both ends of the band body. .

  2. Description of the Related Art Conventionally, as a band clamp device for uniformly fastening and fixing containers, hoses, ducts, etc. from the circumference on an aircraft, a vehicle, etc., as shown in FIG. 2, for example, a band-shaped band formed in a steel arc shape Both ends 1a and 1b of the main body 1 are folded in a ring shape to form a pair of locking portions 2a and 2b, and one end 3a of a fastening member 3 such as a bolt is rotatably engaged with the one locking portion 2a. And the other engaging portion 2b is engaged with the other end 3b of the fastening member 3, and the length adjusting member 4 such as a nut is formed so that the length can be adjusted (for example, Patent Document 1).

  An arc-shaped reinforcing plate 5 fixed by welding or the like is attached to the lower surface of one locking portion 2a between the pair of locking portions 2a and 2b so as to cover the pair of locking portions 2a and 2b. Further, both ends 1a and 1b of the band-shaped band body 1 are folded back and fixed at a plurality of positions by fastening members 6 such as spot welding and rivets as shown in FIGS.

  However, in the band clamp device as described above, when excessive vibration is applied, the band main body 1 resonates and repeats as shown by the two-dot chain line in FIG. There is a problem that the bending stress acts and the stress is concentrated to cause fatigue failure.

  For this reason, the conventional band clamp device has a problem of lacking reliability depending on the application.

  This invention pays attention to such a conventional problem, and an object of the present invention is to provide a band clamp device capable of preventing vibration and bending fatigue failure of the both-end folded fixing portion of the band body and making the product highly reliable. Is.

  In order to achieve the above object, the gist of the present invention is that a bending reinforcing plate is superposed and fixed integrally at a boundary portion between the folded end portions of the band main body and the band main body.

  Here, it is preferable that the folded end portions of the band main body and the bending reinforcing plate are integrally fixed by welding or fixing pins, and the bending reinforcing plate is configured integrally with the band main body.

  In the present invention, as described above, since the bending reinforcing plate is superposed and fixed integrally at the boundary between the both ends of the band main body and the band main body, the vibration and bending of the both ends folding fixing portion of the band main body are fixed. This has the effect of preventing fatigue failure and making the product highly reliable.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
Note that the same components as those in the conventional example are denoted by the same reference numerals and description thereof is omitted.

  FIG. 1 shows an enlarged perspective view of one folded fixing portion of a band body embodying the present invention, 1 is a band-shaped band body, 1a is one folded terminal portion, and 2a is one locking portion 2a. The one end 3a of a fastening member 3 such as a bolt is rotatably engaged with the engaging portion 2a.

  Reference numeral 6 denotes a fastening member such as spot welding or a rivet for fixing one folded terminal portion 1a of the band main body 1. In addition, since the other folding fixing | fixed part of the band main body 1 is the same structure, description is abbreviate | omitted.

  In the present invention, the bending reinforcing plate 7 is superposed on the boundary portion Z between the folded end portions 1a and 1b of the band main body 1 and the band main body 1, and is integrally fixed by a fastening member such as welding or a fixing pin. It is. The bending reinforcing plate 7 may be formed of the same material as or different from the band main body 1, and the bending reinforcing plate 7 may be formed integrally with the band main body 1 or divided. Is also possible.

  In this case, by integrally configuring the band main body 1 and the bending reinforcing plate 7, it is possible to further prevent the vibration of the both-end folded fixing portion and increase the bending fatigue strength.

  As described above, since the bending reinforcing plate 7 is superposed on the boundary portion Z between the folded end portions 1a and 1b of the band main body 1 and the band main body 1 and fixed integrally by spot welding or the like, It is possible to effectively prevent vibration and bending fatigue failure of the both-end folded fixing portion, and to provide a highly reliable band clamp device.

It is an expansion perspective view of one folding fixing | fixed part of the band main body which implemented this invention. It is a schematic block diagram of the conventional band clamp apparatus. It is an expansion perspective view of one folding fixing | fixed part of the conventional band main body. It is explanatory drawing in case the stress is concentrated by the repeated bending stress in the conventional folding fixing | fixed part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Band main body 1a, 1b Both ends 2a, 2b Locking part 3 Fastening member 3a One end of fastening member 3b The other end of fastening member 4 Length adjustment member 5 Reinforcement plate 6 Fastening member 7 Bending reinforcement plate Z Boundary part X Spot welding part

Claims (3)

Both ends of the band-shaped band body formed in an arc shape are folded to form a pair of locking portions, and one end of the fastening member is rotatably connected to one of the locking portions, and the other of the locking portions In the band clamp device for detachably attaching the other end of the fastening member adjustable in length,
A band clamp device in which a bending reinforcing plate is superposed and fixed integrally at a boundary portion between both folded end portions of the band main body and the band main body. The band clamp device according to claim 1, wherein the folded end portions of the band main body and the bending reinforcement plate are integrally fixed by welding or a fixing pin. The band clamp device according to claim 1 or 2, wherein the bending reinforcement plate is configured integrally with a band body.

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