JP2001025141A - Binding tool for electric wire or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain firm tightening by a strap formed with a finger non-slip function and prevention of the strap from being broken by an engaging tooth in a locking head, in a binding machine for electric wires or cables. SOLUTION: This binding tool consists of a locking head 1 and a synthetic resin strap 2. The locking head 1 includes a pair of insertion holes 6, 6, through which both ends of the strap 2 are passed, and an engaging tooth 4 protruded to the inside of the respective insertion holes 6 and engaged bitingly with the strap 2 so as not to come off. Both surfaces of the front and rear of the strap 2 are formed with knurling in a crisscross pattern, which crosses the slanting cuts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tying tool used for bundling electric wires and cables.

[0002]

2. Description of the Related Art A binding device of this type comprises a synthetic resin strap and a locking head. The locking head is provided with a pair of insertion holes or one insertion hole, and locking teeth protrude into the insertion holes. There is something to be set up. To bundle wires and cables, bundle the wires and cables with a strap of the required length, insert both ends of this strap into the insertion holes of the locking head, and then grasp the ends of the strap with your fingers or tools and tighten. , So that the strap bites into the locking teeth in the insertion hole and engages in the retaining state,
As a result, the wires, cables, and the like are held in a tightly bound state.

[0003]

However, since the front and back surfaces of the synthetic resin strap are formed to be smooth surfaces, the strap is inserted through the locking head, and the ends of the strap are grasped with fingers or tools and tightened. Sometimes my fingers and tools were slippery and I couldn't tighten as strongly as I wanted.

As a countermeasure against this slip, it is conceivable to form knurls on both sides of the strap.
If the knurled eyes are flat with narrow grooves running in parallel with the entire length of the strap in the width direction at a small pitch in the longitudinal direction, the straps will prevent the finger from slipping, It has been found that the strap is liable to break due to stress concentration when the locking teeth in the locking head bite into its flat surface after tightening because it is thinned and weakened over the entire length.

Therefore, the present invention has been made based on such knowledge, and the strap has a function of preventing slippage of fingers and tools, enables strong tightening, and breaks the strap by locking teeth in the locking head. It is an object of the present invention to provide a tying tool such as an electric wire that can be prevented.

[0006]

According to the present invention, there is provided a binding device such as an electric wire, a strap made of a synthetic resin, an insertion hole through which both ends of the strap are inserted, and a projecting hole provided in the insertion hole. A locking head having locking teeth that bite into and engage with the strap in a locking manner, and on both the front and back surfaces of the strap, knurled eyes having crossed oblique eyes are formed. It has.

[0007]

[Function] Even when grasping both ends of the strap inserted through the insertion hole of the locking head with a finger or a tool and tightening strongly, the finger or tool slips because it gets caught in the eyes formed on the front and back sides of the strap Disappears. In addition, according to the knurled eyelet in which the oblique eyes are crossed, the thin portion of the strap is discontinuous only by being formed intermittently in the width direction, so that the strap is not continuous. The strap is not broken even if the locking teeth in the locking head bite.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a binding device according to the present invention will be described with reference to the drawings. 1 is a perspective view of a locking head of the tying tool, FIG. 2 is a perspective view showing the strap of the tying tool with a part thereof omitted, FIG. 3 is an enlarged sectional view taken along line AA in FIG. 2, and FIG. It is a half-cut sectional view of the binder shown.

The tying tool according to the present invention comprises a combination of a locking head 1 shown in FIG. 1 and a strap 2 shown in FIGS. 2 and 3. As shown in FIGS. 1 and 4, the locking head 1 is formed by bending a head body 3 made of a synthetic resin material into a truncated pyramid shape and a V-shaped stainless plate or the like. 4 and 4 made of metal. The head body 3 has two insertion holes 6, 6 through which both ends of the strap 2 can be inserted so as to penetrate vertically, and a V-shape into which the locking body 5 can be inserted between the insertion holes 6, 6. The insertion hole 7 is formed to penetrate in the front-rear direction so as to communicate with the insertion holes 6 and 6. The locking body 5 is inserted into the insertion hole 7 from one side in the front-rear direction of the head body 3, and is fixed so that the tips of the locking teeth 4, 4 protrude into the insertion holes 6, 6.

On the other hand, the strap 2 is formed by extruding a synthetic resin material into a belt shape. On both front and back surfaces, the strap 2 is passed through a knurled gear with a crisp outer surface in the extrusion forming step and is stamped. As a result, as shown in FIGS. 2 and 3, a knurled eyelet 8 in which oblique eyes intersect is formed.

To bundle wires and cables using the locking head 1 and the strap 2 configured as described above, as shown in FIG. Is inserted into one insertion hole 6 of the locking head 1 and the other end 2b of the strap 2 is inserted into the other insertion hole 6 of the locking head 1, then the locking head 1 is grasped with one hand, and the finger or the other hand is inserted. With the tool held in the other hand, both ends 2a, 2 of the strap 2
Then, the strap 2 is engaged with the locking teeth 4 in each of the insertion holes 6 so as to prevent the strap 2 from slipping out, whereby the body 9 to be bound is held in a tightly bound state.

At this time, a finger or a tool that grasps both ends 2a and 2b of the strap 2 does not slip because it is caught by the knurled eyes 8 formed on both the front and back surfaces of the strap 2, and is therefore extremely easy. The binding object 9 can be strongly tightened and bound by a simple tightening operation.
In addition, according to the knurled eyelet 8 having a stitch shape, the thinned portion of the strap 2 is discontinuous only by being formed intermittently in the width direction, so that the inside of the locking head 1 in the width direction of the portion is changed. Even if the locking teeth 4 of the
No breakage occurred.

In the above embodiment, the locking head 1 is
It has two insertion holes 6, 6, one end 2 a of the strap 2 is inserted into one insertion hole 6, and the other end 2 b of the strap 2 is inserted into the other insertion hole 6. However, the present invention is not limited to this. Instead, the locking head 1 may have a single insertion hole 6 and the one end 2a and the other end 2b of the strap 2 may be inserted through the insertion hole 6 in the same manner. In the case of the locking head 1 having the single insertion hole 6, it is needless to say that the locking teeth 4 that bite into and engage with the one end 2 a and the other end 2 b of the strap 2 are protruded into the insertion hole 6. That is.

[0014]

According to the present invention, a simple means of forming knurled knurls on both the front and back surfaces of the strap can exert the slip-preventing function of the fingers and tools of the strap and simplify the wires and cables. In addition to being able to tighten tightly, there is an advantage that the strap can be prevented from being broken by locking teeth in the locking head.

[Brief description of the drawings]

FIG. 1 is a perspective view of a locking head of a binding device.

FIG. 2 is a perspective view showing the strap of the binding device with a part thereof omitted.

FIG. 3 is an enlarged sectional view taken along line AA in FIG. 2;

FIG. 4 is a partially cutaway sectional view of the tying tool shown in a use state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locking head 2 Strap 4 Locking tooth 6 Insertion hole 8 Asymmetrical knurled eye 9 Binding object such as electric wire or cable

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E085 BA15 BC09 BD02 BD08 BE05 BG02 5G363 AA04 AA12 BA01 DA16

Claims (1)

[Claims] 1. A strap made of a synthetic resin, an insertion hole through which both ends of the strap are inserted, and a locking tooth protruding into the insertion hole and engaging with the strap in the insertion hole in a retaining shape. A tying tool for an electric wire or the like, comprising: a locking head having a knurled eye with oblique eyes crossed on both front and back surfaces of the strap.