JPH083688Y2 - Band clamp - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention, for example, on the peripheral surface of a utility pole,
The present invention relates to a band fastener for fastening various flexible bands such as a telephone pole band used for fixing a cable, a conduit tube, a protective plate, or the like, or attaching a support bracket for an advertisement or a street light.

[0002]

2. Description of the Related Art In this type of band tightening tool, one end of a body fitting having a U-shaped cross section and one end of a locking fitting are openably and closably connected by a connecting shaft, and one end of the band is connected to a band through hole formed in the body fitting. A band wrapped around the connecting shaft by inserting and fixing it, winding the other end of the band around the connecting shaft and fixing it to the locking metal fitting, and closing the locking metal fitting with respect to the main metal fitting. It is known that the other end of the band can be tightened and fixed under tension (see, for example, Japanese Utility Model Publication No. 50-40757).

[0003]

However, since the conventional one has a structure in which the other end of the band is directly wound around the cylindrical body fitted to the connecting shaft or around the connecting shaft, there is little elongation such as stainless steel. The metal band of No. 1 has a problem that if the tensile force is applied to a certain level, the locking metal fitting cannot be confined in the main metal fitting side, and if it is a band made of rubber or synthetic resin, it may break. It was

The present invention has been proposed in view of the above problems, and it is an object of the present invention to provide a band tightening tool capable of easily and reliably tightening and fixing metal bands, synthetic resin bands and various other bands. To aim.

[0005]

In order to achieve the above object, the band tightening device according to the present invention has the following structure. That is, it is provided with a main body metal fitting having a band through hole for inserting and fixing one end of the band, and a locking metal fitting and a holding metal fitting that are openably and closably connected to the main body metal fitting by a connecting shaft and sandwich and fix the other end of the band. , The other end of the band is wrapped around the base of the locking metal fitting, and is sandwiched between the locking metal fitting and the holding metal fitting and folded back at the free end side of the locking metal fitting so that the locking metal fitting and the holding metal fitting are on the main body metal fitting side. The elastic member having a substantially circular arc shape is integrally provided on the base of the locking metal fitting around which the other end of the band is wound, and when the other end of the band is sandwiched between the locking metal fitting and the pressing metal fitting, It is characterized in that a pressing piece and an opening for bending and fixing the middle part of the other end of the band to prevent the band from coming off are provided so as to face the pressing metal fitting and the locking metal fitting, respectively.

[0006]

As described above, the other end of the band is sandwiched between the locking metal fitting and the pressing metal fitting, and when sandwiched, the presser piece and the opening for fixing the other end of the band by bending the middle part of the band are secured. Since the other end of the band can be securely prevented from coming off and fixed by providing the locking metal fitting and the pressing metal fitting respectively, a substantially arc-shaped elastic piece is integrally formed on the base of the locking metal fitting around which the other end of the band is wound. The elastic piece bends when the locking metal fittings and the pressing metal fittings are rotated to the body metal fitting side to tension the band when the band is tensioned. Is alleviated, and it is possible to tighten and fix it in a moderate tension.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on the embodiments shown in the drawings. 1 is a cross-sectional plan view showing an embodiment of a band tightening tool according to the present invention, and FIG. 2 is a front view thereof. In the drawing, 1 is a main body metal fitting, 2 is a locking metal fitting, 3 is a holding metal fitting, and these metal fittings 1 to 3 are each formed of a stainless steel plate or the like into a substantially U-shaped cross section. The body metal fitting 1 and the locking metal fitting 2 are arranged such that the opening sides of the U-shaped cross section face each other, and the holding metal fitting 3 is arranged in the same direction as the locking metal fitting 2. On the side, they are openably and closably connected to each other by a connecting shaft 3 which is inserted into each of the opposite side plates 1a, 2a and 3a.

The metal fitting 1 is formed with band through holes 11 for inserting and fixing one end B1 of the band B, and the other end B2 of the band B is bent and pulled out from the holding fitting 3 and the locking fitting 2. A retainer piece 31 and an opening 21 are provided for stopping and locking. Further, the main body metal fitting 1 and the pressing metal fitting 3 are provided with corresponding engaging concave and convex portions 12 and 32 for holding the pressing metal fitting 3 in the main metal fitting 1 in a closed state. In the case of the engaging concave and convex portions 12 and 32, as shown in FIG. 3, a concave portion (opening portion) 12 is formed in the opposing side plates 1a and 1a of the U-shaped main body metal fitting 1 and a convex portion (projection) that engages with the concave portion Although 32 is formed on the opposing side plates 3a of the holding metal fitting 3, the holding metal fitting 3 is formed with a concave portion, and a convex portion engaging with the concave portion is formed on the main metal fitting 1, and so on.

Further, a substantially arcuate elastic piece 22 around which the other end of the band is wound is integrally provided on the base of the locking metal fitting 2. Especially in the case of the drawing, the elastic piece 22 is attached to the U-shaped locking metal fitting 2
Is formed integrally with the base plate surface of the above, and is formed in a substantially semi-circular shape so as to surround the connecting shaft 3 in a substantially concentric manner. A slit-like gap S is formed between the opposite side plate 2a and the opposite side plate 2a so that it can be elastically deformed in the radial direction.

In the above configuration, when a power pole band made of, for example, stainless steel or synthetic resin is tightened and fixed, as shown in FIG.
Is folded back through the band through holes 11, 11 and fixed by sandwiching the band end between the main body fitting 1 and the electric pole P or the like. Then, with the locking metal fitting 2 and the pressing metal fitting 3 opened as shown in FIG. 4, the other end B2 of the band B is connected between the main metal fitting 1 and the locking metal fitting 2, and between the locking metal fitting 2 and the pressing metal fitting 3. 5, and the band end B2 is sandwiched between the locking metal fitting 2 and the pressing metal fitting 3, and the locking metal fitting 2 and the pressing metal fitting 3 are superposed as shown in FIG. Then, the pressing piece 31 provided on the pressing metal fitting 3 enters the opening 21 formed in the locking metal fitting 2 while pressing the band end B2,
As a result, the band end B2 is bent and locked to prevent it from coming off.

In that state, the tip of the band end B2 is shown in FIG.
As shown in FIG. 5, the locking metal fitting 2 is folded back at the free end 23 side. At that time, the band end B2 folded back at the free end side of the locking fitting 2
If is too long, cut it with a cutter, etc., if necessary. Next, with the band end B2 sandwiched between the locking metal fitting 2 and the pressing metal fitting 4 as described above, the locking metal fitting 2 and the pressing metal fitting 4 are rotated in the direction of the arrow in FIG. The convex portion 32 of 3 is engaged with the concave portion 12 of the main body fitting 1 to be closed in the main body fitting 1.

At this time, the band end B2 is sandwiched between the locking metal fitting 2 and the pressing metal fitting 3 as described above, and the band end B2 is pushed into the opening 21 by the pressing piece 31 of the pressing metal fitting 3. Since it is locked so as not to come off, the band end B2 can be securely closed without loosening. Further, by closing the locking metal fitting 2 together with the holding metal fitting 3 into the main body metal fitting 1, the other end B2 of the band has an arc-shaped elastic piece 2.
The band B is tightened while being wound around the band B to be tightened, and when the band B is subjected to an excessive tensile force at that time, the elastic piece 22 moves in the radial direction,
That is, it is bent in the direction of the connecting shaft 3 and plays a role of a cushion to relieve the tension force, and even a metal band or the like having a small elongation can be clamped and fixed in a moderate tension state.

When the locking metal fitting 2 and the pressing metal fitting 3 are closed in the main metal fitting 1 as in the above embodiment, the band end B2 is folded back at the free end 23 of the locking metal fitting 2 as shown in FIG. When the band end B2 is elastically sandwiched between the free end 23 and the body fitting 1 in the closed state as shown in FIG. 1, the band B can be more securely prevented from coming off and fixed. . Further, although the illustrated example has been described by taking the case of being applied to a telephone pole band as an example, it can also be applied to, for example, a packing band and other various bands.

[0014]

As described above, in the band tightening tool according to the present invention, the other end B2 of the band is attached to the locking metal fitting 2 and the pressing metal fitting 3.
It is configured to be sandwiched between and to be fixed, and when the other end B2 of the band is sandwiched between the locking metal fitting 2 and the pressing metal fitting 3, the middle end of the other end B2 of the band is bent to prevent the retainer from being fixed. Since the piece 31 and the opening portion 21 are provided so as to face the pressing fitting 3 and the locking fitting 2, respectively, the other end B2 of the band can be securely prevented from coming off and fixed. Further, since the elastic piece 22 having a substantially arc shape around which the band is wound is integrally provided on the base of the locking metal fitting 2, the band B can be tightened and fixed in a moderately tensioned state. Even if the metal band, such as a metal band, has a small elongation, the locking metal member 2 does not become trapped in the main metal member 1 as in the conventional case, and a rubber or plastic band does not. Can be easily and securely tightened without breaking. Further, since the band tightening tool according to the present invention has a simple structure, it can be manufactured easily and inexpensively, and since the thickness of the whole tightening tool can be made thinner than the conventional one, when it is used for a utility pole band, for example. There is an effect that the band tightening tool does not greatly extend to the side of the utility pole and become an obstacle.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view showing one embodiment of a band fastener according to the present invention.

FIG. 2 is a front view of the band fastener.

FIG. 3 is a sectional view taken along line AA in FIG. 1;

FIG. 4 is a cross-sectional plan view showing a state where the band is fastened by the band fastener of the embodiment.

FIG. 5 is a cross-sectional plan view of a state in which the band is fastened by the band fastening tool of the above embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body metal fitting 2 Locking metal fitting 3 Holding metal fitting 4 Connection shaft 11 Band through hole 12 Engagement concave portion 21 Opening 22 Elastic piece 31 Pressing piece 32 Engagement convex portion B Band

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Hideyuki Suzuki, 4-2-4, Kachidoki, Chuo-ku, Tokyo Suda Manufacturing Co., Ltd. (72) Inventor, Pan Nagai, 4-2-4, Kachidoki, Chuo-ku, Tokyo Company Suda Manufacturing Co., Ltd. (72) Inventor Hajime Matsuda 4-4 Kachidoki, Chuo-ku, Tokyo Stock Company Suda Manufacturing Co., Ltd. (72) Inventor Tadahiro Mukata 4-2-4 Katsudoki, Chuo-ku, Tokyo Suda Manufacturing Co., Ltd. (72) Inventor, Yasuji Ohashi, 4-2-4, Kachidoki, Chuo-ku, Tokyo (56) References: Suda Manufacturing Co., Ltd. (56) References: JP-A-53-64156 (JP, A), JP-A-55-1095 (JP, U) Actual flat 4-119609 (JP, U) Actual flat 6-6712 (JP, U) Actual 50-40757 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A body metal fitting having a band through hole for inserting and fixing one end of the band, and a locking metal fitting and a holding metal fitting that are openably and closably connected to the body metal fitting by a connecting shaft and fix the other end of the band. And the other end of the band is wrapped around the base of the locking metal fitting and is sandwiched between the locking metal fitting and the holding metal fitting and folded back at the free end side of the locking metal fitting to hold the locking metal fitting and the holding metal fitting. With a configuration that closes to the body metal fittings side,
A substantially arc-shaped elastic piece is integrally provided on the base of the locking metal member around which the other end of the band is wound, and when the other end of the band is sandwiched between the locking metal member and the holding metal member, the middle of the other end of the band is provided. A band tightening tool, characterized in that a pressing piece and an opening for bending and fixing the portion are fixed to the pressing metal fitting and the locking metal fitting, respectively.