JP3499753B2 - Band fastener - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band fastener used for, for example, a utility pole band or a packing band.

[0002]

2. Description of the Related Art A band tightening tool as described above is conventionally rotatable in a tightening tool body generally formed in a generally U-shaped cross section and a shaft insertion hole formed in a facing piece of the tightening tool body. The band take-up shaft inserted through and held by the band take-up shaft, the ratchet pawl that rotates integrally with the band take-up shaft, and the ratchet pawl that engages with the ratchet pawl and rotates in a direction opposite to the take-up direction of the take-up shaft. It is provided with a detent locking means for preventing movement, one end of the band is locked to the fastener main body, and the other end is sequentially wound around the winding shaft and tightened.

[0003]

However, in the conventional band tightening tool, the ratchet ratchet wheel is generally provided on the outer surface side of the tightening tool body or on the inner surface side of the U-shaped body. However, the ratchet ratchet wheel provided on the outer surface side of the fastener body may impair the external appearance or may be damaged by hitting another object on the ratchet ratchet wheel. On the other hand, in the case where the ratchet pawl is provided on the inner surface side of the U-shaped body, the band is wound around the peripheral surface of the ratchet pawl or meanders, so the winding operation is difficult and the tightening force is often There were problems such as lack of stability and lack of stability.

The present invention has been proposed in view of the above problems, and an object of the present invention is to provide a band tightening tool which has a good appearance and is capable of winding a band with good and stability.

[0005]

In order to achieve the above object, the band tightening tool according to the present invention has the following structure.

That is, a fastener main body having a substantially U-shaped cross section, a band winding shaft rotatably inserted and held in a shaft insertion hole formed in a facing piece of the fastener main body, and A ratchet ratchet wheel that rotates integrally with the band winding shaft, and a detent locking means that engages with the ratchet ratchet wheel to prevent the reel shaft from rotating in a direction opposite to the winding direction. In the band tightening tool, the ratchet ratchet wheel is formed integrally with the band winding shaft, and the ratchet ratchet wheel is housed and arranged in the shaft insertion hole.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The band tightening tool according to the present invention will be specifically described below based on the specific embodiments shown in the drawings.

FIG. 1 shows an embodiment of a band tightening tool according to the present invention. FIG. 1 (a) is a plan view, FIG. 1 (b) is a front view, and FIG. 1 (c) is a bottom view. Figure (d) is a side view. 2 and 3 are cross-sectional views taken along line AA and BB in FIG. 1B, FIG. 4A is an exploded front view, and FIG.
5A is a partially exploded side view, FIG. 5A is a plan view of the fastener body, FIG. 5B is a front view, FIG. 5C is a bottom view, and FIG. 5D is a side view. .

In the drawing, reference numeral 1 is a fastening body, which is the body 1.
In this embodiment, is formed of synthetic resin into a substantially U-shaped side surface as shown in FIG. The U-shaped main body 1 has opposing surfaces 1a, 1a formed with shaft insertion holes 11, 11 through which the band winding shaft 2 is rotatably inserted and held, and one end of the band is provided on the rear surface 1b side of the main body 1. A pair of band locking holes 12, 12 for inserting and locking and a band passing hole 13 for inserting the other end of the band are provided.

In the present embodiment, the band winding shaft 2 is formed of synthetic resin into a generally cylindrical shape, and the band insertion hole 21 is formed in the substantially central portion thereof as shown in FIGS. 1 (d) and 4. Is provided. Ratchet pawls 22 and 22 are integrally formed on the outer circumference of the winding shaft on both sides of the band insertion hole 21, and the ratchet pawls 22 and 22 are formed in the shaft insertion hole 11 within the thickness of the facing piece 1a. It is housed and arranged so that it fits.

A flange portion 23, which serves as a stopper when the winding shaft 2 is inserted into the shaft insertion hole 11, is provided on one end side of the winding shaft 2, and the winding shaft 2 is rotated by a finger or the like. The knobs 24 for moving are integrally formed. Further, a ring-shaped recess 25 is formed on the other end side of the winding shaft 2, and the locking clip 3 is engaged with the recess 25 so that the winding shaft 2 is retained in the main body 1 so as to be retained. It is a configuration that allows it. In the figure, reference numeral 14 is a protrusion for locking the clip 3 integrally formed with the main body 1.

In FIG. 1, 4 is the ratchet pawl 2 described above.
A leaf spring serving as a detent locking means for engaging with No. 2 to prevent rotation of the winding shaft 2 in a direction opposite to the winding direction,
As shown in FIG. 4, the leaf spring 4 is formed by integrally forming bent portions 4b, 4b having a substantially V-shaped plane (see FIG. 1 (a)) at both ends in the longitudinal direction of a substantially strip-shaped substrate 4a. The bent portion 4b serves as an engaging portion for the ratchet ratchet wheel 22.

The leaf spring 4 is configured to be inserted into the main body 1 through a spring insertion hole 11a (see FIG. 5A) continuously formed in the shaft insertion hole 11, and the leaf spring 4 and the winding The leaf spring 4 is retained by the flange portion 23 and the locking clip 3 in a state where the shaft 2 is inserted into the main body and assembled, and the bent portion (engagement portion for ratchet ratchet wheel) 4b. Is located within the thickness of the opposing pieces 1a, 1a of the main body 1 and is always engaged with the ratchet ratchet wheel 22.

In the above structure, when various articles are tightened and fixed to the peripheral surface of the electric pole P with a band B made of synthetic resin or the like, as shown in FIG. One end B1 of the band B, which is disposed on the peripheral surface of the electric pole P and wound around the peripheral surface of the electric pole P, is inserted into the band locking hole 12 of the main body 1 as shown in the figure to be connected and held. In that state, the other end B2 of the band B is inserted into the band insertion hole 13 formed in the main body 1 and then the band insertion hole 2 of the band winding shaft 2 is inserted.
1, the knob 24 provided on the band winding shaft 2 is pinched with a finger or the like, and the winding shaft 2 is rotated clockwise in FIG. 6A, and the other end B2 of the band B is sequentially wound.

At this time, since the ratchet ratchet wheel 22 is accommodated in the shaft insertion hole 11 as described above, the band B
Can be wound up well without winding around the ratchet ratchet wheel 22 or meandering. Ratchet claw wheel 22
.Bent portion 4b of leaf spring 4 engaging one claw 22
As shown by the chain line in the figure, when the band winding shaft 2 is rotated, it is bent outward in the radial direction of the ratchet pawl wheel 22 and retracted, and then engaged with the next pawl, and this is repeated.

The other end B2 of the band B inserted into the band insertion hole 21 of the winding shaft 2 is bent in a substantially Z-shape as shown in FIG. When the band B is wound up, the band B gradually becomes tense, and when the band B is wound up sufficiently, when the finger is released from the knob 24, the ratchet ratchet wheel 22
・ The bent portion 4b of the leaf spring 4 engages with the claw 22 and the band B
Can be kept in a tension state.

When the ratchet ratchet wheel 22 is accommodated in the shaft insertion hole 11 of the fastener body 1 as described above, the band B is
Can be wound up well without winding around the ratchet ratchet wheel 22 or meandering. Also in this case,
A pair of ratchet pawls 22 are provided in the axial direction of the band winding shaft 2 as shown in the figure, and a leaf spring 4 is used as a rotation stopping locking means for the winding shaft 2. The leaf spring 4 has the pair of ratchet pawls. A pair of bent portions (engagement portions) that engage with the vehicle 22
4b is provided, and each engaging portion 4b is positioned substantially within the thickness of the facing piece 1a of the main body 1 so that the winding operation can be further stabilized.

In the above embodiment, the knob 24 is formed on the take-up shaft 2 as a rotating operation means for the band take-up shaft 2. However, for example, a turning tool is attached to the end of the band take-up shaft 2. Engagement portions such as recesses for mating may be formed.
8A and 8B show an example in which a hexagonal recess 26a for engaging a hexagonal wrench (not shown) is formed, and FIGS. 8A and 8B show one character for engaging a flat-blade screwdriver (not shown). An example in which a groove-shaped recess 26b is formed is shown.

Further, in the above embodiment, the band tightening tool according to the present invention is used for tightening the utility pole band. However, the band tightening tool is also applicable to a packing band and various other bands.

[0020]

As described above, in the band tightening tool according to the present invention, the ratchet ratchet wheel 22 is housed and arranged in the shaft insertion hole 11 of the tightening tool body 1, so that the ratchet is provided as in the prior art. There is no possibility that the ratchet wheel 22 is exposed to the outside and the appearance is not spoiled, and moreover, the band B can be wound well without winding around the ratchet ratchet wheel 22 or meandering, and the operability and stability are improved. There is an effect that a good band tightening tool can be provided.

[Brief description of drawings]

FIG. 1A is a plan view showing an embodiment of a band tightening tool according to the present invention. (B) is the front view. (C) The bottom view. (D) is a side view thereof.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4A is an exploded front view. (B) is a partial vertical disassembly side view.

FIG. 5A is a plan view of the fastener main body. (B) is the front view. (C) The bottom view. (D) is a side view thereof.

6 (a) and 6 (b) are cross-sectional plan views showing the band tightening procedure.

FIG. 7A is a plan view of a modified example of the band fastening tool.
(B) is the front view.

FIG. 8A is a plan view of another modified example of the band tightening tool.
(B) is the front view.

[Explanation of symbols]

1 Fastener body 1a Opposing piece 11 Shaft insertion hole 12 Band locking hole 13 band through hole 14 Non-rotating protrusion 2 band winding shaft 21 band insertion hole 22 Ratchet claw wheel 23 Flange 24 knobs 25 Ring-shaped recess 3 locking clip 4 leaf spring 4a substrate 4b Bent section B band

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-10-89320 (JP, A) JP-A-63-285306 (JP, A) JP-A-10-218224 (JP, A) JP-A 61- 256043 (JP, A) S. 47-18320 (JP, Y1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65D 63/16 F16B 2/08

Claims (4)

(57) [Claims] 1. A fastener main body formed to have a substantially U-shaped cross section, a band winding shaft rotatably inserted and held in a shaft insertion hole formed in a facing piece of the fastener main body, and the same. A ratchet ratchet wheel that rotates integrally with the band winding shaft, and a detent locking means that engages with the ratchet ratchet wheel to prevent the reel shaft from rotating in a direction opposite to the winding direction. In the band tightening tool, the ratchet ratchet wheel is formed integrally with the band winding shaft, and the ratchet ratchet wheel is housed and arranged in the shaft insertion hole. 2. The band tightening device according to claim 1, wherein a pair of the ratchet ratchet wheels are provided in the axial direction of the band winding shaft, and each ratchet ratchet wheel is housed and arranged in the shaft insertion hole. 3. The band tightening tool according to claim 1, wherein a leaf spring is used as the detent locking means. 4. The leaf spring has a pair of engaging portions that engage with the pair of ratchet ratchet wheels, and the engaging portions are located substantially within the thickness of the facing piece. The band tightening tool according to claim 2 or 3.