Belt fastener

Abstract

Provided is a belt fastener capable of making a closed rotating rod difficult to be detached from a base portion, capable of reliably and firmly fastening a resin tape to prevent slack and added witha temporary fixing function for temporarily fixing the rotation of the resin tape or a resin rod to improve operability. Clamped holes (12b1, 12b1) are formed in clamped portions (12b, 12b) of the base portion (12), the clamped holes (12b1, 12b1) are provided with clamped inclined surface portions (12b11, 12b11) with top surfaces which gradually slope upward from the inside to the outside, on theother hand, clamping inclined surface portions (11c1, 11c1) are arranged on clamping portions (11c, 11c) of a rotating lever (11), and the clamping inclined surface portions (11c1, 11c1) are graduallyinclined upward from the inner side to the outer side when the rotating lever (11) is closed to the base portion (12) to be clamped to the clamped inclined surface portions (12b11, 12b11) of the clamped holes (12b1, 12b1).

Description

technical field [0001] The present invention relates to a belt fastener comprising a rotation lever that rotates while stretching a resin belt in which a plurality of core wires are embedded in a resin member, and a base portion that rotates the rotation lever to lock it. Fasteners are used for attaching such resin bands to utility poles or for packaging and the like. Background technique [0002] In recent years, in order to fix cables, wire tubes, protective panels, etc. on the peripheral surface of utility poles, or to install support frames such as advertisements and street lamps, polyester and stainless steel belts with little stretchability are used. As a fastener for such a belt, the other end of the belt is locked to the base part, and the rotating rod for fastening the belt is rotatably attached to the base part, and the belt coiled by the rotating rotating rod One end side of the belt is pulled into the shaft to apply tension (tension) to the belt, and the rotatin...

AI Technical Summary

Problems solved by technology

[0006] However, in the above-mentioned conventional belt fasteners, the paragraph [0012] of the description only states that "the two sides of the free end side of the operating rod 2 are integrally provided with locking protrusions 23, and by attaching the above-mentioned locking The locking protrusion 23 engages with the locking hole 13 provided on the side of the main body, so that the operating rod 2 is locked and locked", as described in the above-mentioned patent Figure 4 That is, the application Figure 18 As shown, since the locking projection with an isosceles triangular cross-section at the tip of the rod engages with the locking hole of the base, even if the belt is passed through the rod and becomes locked (fully closed) with respect to the base, In this case, the tension force acting on the belt also acts in the direction of opening the lever, so there is a problem that the locking protrusion at the tip of the lever is easily detached from the locking hole at the tip of the base.

[0007] In particular, since the resin tape is easier to stretch than the metal tape and is more likely to change with time, it is necessary to apply a larger tensile force than the metal tape at the initial stage of fastening. Therefore, in the above-mentioned conventional tape fastener, the tip of the rod The locking protrusion whose cross section is an isosceles triangle is easy to disengage from the locking hole of the base

[0008] Moreover, in the above-mentioned conventional belt fastener, after the belt is passed through the rod, there is no so-called temporary fixing function for temporarily fixing the rotation of the belt and the rod during the movement of the rod from the wide open state to the fully closed state. , therefore, there is also a problem of poor operability in this respect

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