JPH0989165A - Binding band forming method and binding band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost of a metal mold, to use the metal mold over a long period, and to reduce forming cost of a binding band, by forming the binding band by using the metal mold having a simple structure. SOLUTION: A binding band 21 is formed by making openings of an insertion hole 23a of a winding band binding part 23 and a hollow cylindrical part 24a of a stud bolt locking part 24 in the same direction as the mold opening direction of a metal mold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding band forming method and a binding band, and more particularly, to a binding band forming method and a binding band attached to a stud bolt provided on a panel of a vehicle body, an electric device or the like.

[0002]

2. Description of the Related Art Generally, it is known that a wire harness or the like is fixed to a panel by using a binding band which is engaged with a stud bolt provided at a predetermined position of a panel of a vehicle body, electric equipment or the like. As the band, for example, those shown in FIGS. 4 and 5 are known.

4 and 5, reference numeral 1 denotes a binding band, and this binding band 1 has a flat clip portion 5 having a binding band binding portion 3 and a stud bolt locking portion 4 on the base of the binding band portion 2. Is equipped with. The winding band binding portion 3 is provided with an insertion hole 3a which is inserted from the free end of the winding band portion 2, and the saw-tooth concavo-convex portion formed in the insertion band 3a and formed in the winding band portion 2. Engaging claws 3b that engage with 2a are formed, and this winding band binding portion 3 is shown in FIG.
As shown in Fig. 4, when the winding band 2 is wound around the wire harness 10 and the winding band portion 2 is inserted from the free end into the insertion hole 3a, the sawtooth uneven portion 2a engages with the engaging claw 3b at a predetermined position. By fitting, the wire harness 10 is held.

The stud bolt engaging portion 4 is erected on the end portion of the clip portion 5, and as shown in FIG. 5, the stud bolt 6 is erected on the panel 6 of the vehicle body or electric equipment.
Hollow tubular portion 4a and hollow tubular portion 4 fitted around the outer periphery of a
It is composed of a locking claw 4b which is formed on the inner peripheral surface of a and is locked to the stud bolt 6a so as not to come off. Such a binding band 1 is usually formed by injection molding. Specifically, as shown in FIG. 6, an injection molding machine (not shown) using a movable mold 12 and a fixed mold 13 in which a cavity 11 having substantially the same shape as the binding band 1 is defined on the parting surface P is used. After injecting and filling the molten resin into the cavity 11 through a sprue (not shown) formed in the fixed mold 13, the resin is gradually cooled for a predetermined time, so that the molds 12 and 13 are opened in the direction of the arrow and bound. Band 1 is taken out.

The insertion hole 3a is opened in the same direction as the mold opening direction of the molds 12 and 13, whereas the hollow cylindrical portion 4 is formed.
Since a is opened in a direction substantially orthogonal to the mold opening direction of the molds 12, 13, slide molds 13a, 13b slidable to the fixed mold 13 so as to be able to approach and separate in the vertical direction in FIG. , The slide molds 13a, 13b are brought close to each other when the hollow cylindrical part 4a is molded, the hollow cylindrical part 4 is molded, and the slide molds 13a, 13b are separated when the molds 12, 13 are opened. Part 4a
To open.

[0006]

However, in the conventional method for forming the binding band 1 as described above, the hollow cylindrical portion 4 and the insertion hole 3a are formed substantially in the opening direction of the molds 12, 13.
The slide mold 13a,
It had to be injection molded by means of dies 12, 13 with 13b. Therefore, the total cost of the molds 12 and 13 is increased by the amount of the slide molds 13a and 13b,
As a result, the problem that the cost of forming the binding band 1 increases increases.

Further, since the slide molds 13a and 13b slide with respect to the mold 13, the mold 13 is worn out early and the life of the mold 13 is shortened. Therefore, the invention according to claim 1 can reduce the cost of the mold by making it possible to mold the binding band by using the mold having a simple structure, and the mold can be used for a long period of time. It is an object of the present invention to provide a method of forming a binding band that can be used as a binding band and that can reduce the cost of forming the binding band.

Further, the invention according to claim 2 provides a binding band capable of sufficiently connecting and fixing the first and second clip parts to sufficiently satisfy the original function. It is an object.

[0009]

According to the first aspect of the present invention,
In order to solve the above-mentioned problem, an insertion hole is provided in the base of the winding band part, and an insertion hole is inserted from the free end of the winding band part. The winding band part is provided in the insertion hole. A clip portion having an engaging portion formed with an engaging claw that engages with the serrated concave and convex portion formed on the above, and is erected at a predetermined position of the clip portion and fitted into the outer periphery of the stud bolt of the mating member. A hollow tubular portion and an engaging portion provided on an inner peripheral portion of the hollow tubular portion, the engaging portion having an engaging claw for retaining and locking the stud bolt, and a clip between the engaging portion and the engaging portion. A method of molding a binding hand, which is provided at a predetermined position of a portion and which flexibly connects the clip portion, by injection molding, wherein the clip portion is formed at a substantially right angle through the hinge portion. The mold opening direction of the insertion hole and the hollow cylindrical part are the same direction The sea urchin pair of molds molten resin into a cavity formed in the facing surfaces of the as injecting and filling,
It is characterized by forming a binding band.

In this case, since the binding band is formed by setting the insertion hole of the engaging portion and the opening of the hollow cylindrical portion of the engaging portion in the same direction as the mold opening direction of the die, the binding band is formed in the conventional manner. It is not necessary to provide a slide mold. As a result, the structure of the mold can be simplified to reduce the cost of the mold, the mold can be used for a long period of time, and the cost of forming the binding band can be reduced.

In order to solve the above-mentioned problems, the invention according to claim 2 is the binding band according to claim 1, wherein the first clip part and the second clip part are divided by a hinge part. When the first and second clip parts are arranged on the same plane via the hinge part, the first and second clip parts have a connecting / fixing means for connecting and fixing the first and second clip parts.

In this case, the first and second clip portions can be connected and fixed to each other to arrange the first and second clips in the same plane after forming the binding band, and the panel surface of the vehicle body or the electric equipment can be arranged. The binding band can be attached to the stud bolt of the panel with the clip portions parallel to each other, and the original function of the binding band can be sufficiently satisfied.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing an embodiment of a binding band forming method and a binding band according to the present invention.
First, the configuration will be described. In FIG. 1, reference numeral 21 denotes a binding band, and this binding band 21 is a clip having a winding band binding portion (engaging portion) 23 and a stud bolt locking portion (locking portion) 24 at the base of the winding band portion 22. It has a section 25.

The winding band binding portion 23 is formed with an insertion hole 23a which is inserted from the free end of the winding band portion 22 and is formed in the insertion band portion 22 provided in the insertion hole 23a. Engaging claws 23b that engage with the sawtooth irregularities (not shown) are formed.
On a wire harness (not shown)
When the wire is inserted from the free end into the insertion hole 23a, the saw-tooth unevenness is engaged with the engaging claw 23b at a predetermined position to hold the wire harness.

The stud bolt locking portion 24 is erected on the end portion of the clip portion 25, and is a hollow cylindrical portion fitted into the outer periphery of the stud bolt 26a erected on the panel 26 of the vehicle body or electric equipment. Locking claw 24b which is formed on the inner peripheral surfaces of 24a and the hollow cylindrical portion 24a and is locked to the stud bolt 26a so as not to come off.
It is composed of On the other hand, a hinge 27 is provided at a predetermined position of the clip part 25 between the winding band binding part 23 and the stud bolt locking part 24, and the clip part 25 is provided with the stud bolt locking part 24 upright. The first clip portion 25a and the second clip portion 25b having the winding band binding portion 23 are divided, and the first clip portion 25a and the second clip portion 25b are separated by the hinge portion 27.
The clip portion 25b is flexibly connected.

A pair of lock claws 28a and 28b are provided in the width direction at the end of the first clip portion 25a on the hinge portion 27 side, and at the end of the second clip portion 25b on the hinge portion 27 side. A pair of lock grooves 29a, 29b are provided in the width direction, and when the first and second clip portions 25a, 25b are arranged on the same plane via the hinge portion 27b, the lock claws 28a, 28b are provided.
The first and second clip portions 25a and 25b are connected by fitting and locking b into the lock grooves 29a and 29b. In this embodiment, the lock claws 28a, 28b and the lock grooves 29a, 29b form a connecting / fixing means.

In FIG. 2, 31 is a mold for injection-molding the binding band 21. The mold 31 has a parting surface P having substantially the same shape as the binding band 21, and the binding band is bound. It is composed of a movable mold 32 and a fixed mold 33 in which a cavity 34 is defined so that the insertion hole 23a of the part 23 and the opening of the hollow cylindrical part 24a of the stud bolt locking part 24 are in the same direction as the mold opening direction. The molten resin is injected and filled into the cavity 34 from an injection molding machine (not shown) through a sprue (not shown) formed in the fixed mold 33.

Next, a method of forming the binding band 21 will be described. In this embodiment, after the molten resin is injected and filled into the cavity 34 from the injection molding machine through the sprue, the resin is gradually cooled for a predetermined time, and the molds 32 and 33 are opened in the arrow directions. The clip portions 25a and 25b are shaped so as to be substantially right angled via the hinge portion 27. At this time, the die opening direction of the insertion hole 23a of the winding band binding portion 23 and the opening of the hollow cylindrical portion 24a of the stud bolt locking portion 24 are the same direction, so that the die
Simultaneously opening the molds 32 and 33, the insertion hole 23a and the hollow cylindrical portion 24a are molded.

In the binding band 21 thus formed, when the first and second clip parts 25a and 25b are arranged on the same plane through the hinge part 27b, the lock claws 28a and 28b are fitted in the lock grooves 29a and 29b. By fitting and locking, the first and second clip portions 25a and 25b are connected and fixed to be commercialized. As described above, in this embodiment, the insertion hole 23 of the winding band binding portion 23 is inserted.
a and the opening of the hollow cylindrical portion 24a of the stud bolt locking portion 24 are set in the same direction as the mold opening direction of the molds 32 and 33, and the binding band 11
Since it is molded, it is not necessary to provide a slide mold on the mold as in the conventional case. As a result, the structure of the mold 31 can be simplified to reduce the cost of the mold 31, the mold 31 can be used for a long period of time, and the cost of forming the binding band 11 can be reduced. You can

Further, the first divided by the hinge portion 27
The first portion is attached to the clip portion 25a and the second clip portion 25b.
When the second clip portions 25a and 25b are arranged on the same plane via the hinge portion 27, the first and second clip portions are formed.
Since lock claws 28a, 28b and lock grooves 29a, 29b for connecting and fixing 25a, 25b are provided, the first and second clip parts 25a, 25b are connected after the binding band 11 is formed.
The first and second clips 25a and 25b can be fixed and arranged in the same plane. Therefore, the binding band 21 can be attached to the stud bolt 26a of the panel 26 with the surface of the panel 26 and the clip portion 25 in parallel, and the original function of the binding band 11 can be sufficiently satisfied.

In this embodiment, the lock claws 28a and 28b are used.
And the lock grooves 29a, 29b, the first and second clip portions 25a,
Although it is provided at both ends in the width direction of 25b, it is not limited to this, and as shown in FIG. 3, only one lock claw 41 is provided substantially at the center in the width direction of the first clip portion 25a, and the lock groove 42 is provided at the second position. Clip part
Only one may be provided in the widthwise central portion of 25b.

[0022]

According to the first aspect of the present invention, it is not necessary to provide a slide mold on the mold as in the conventional case.
The structure of the mold can be simplified to reduce the cost of the mold, the mold can be used for a long time, and the cost of forming the binding band can be reduced.

According to the second aspect of the present invention, the first and second clip portions can be connected / fixed and the first and second clips can be arranged in the same plane after the binding band is formed. The binding band can be attached to the stud bolts of the panel by making the panel surface of the vehicle body or the electric device parallel to the clip portion, and the original function of the binding band can be sufficiently satisfied.

[Brief description of drawings]

1A and 1B are views showing an embodiment of a method for forming a binding band and a binding band according to the present invention, wherein FIG. 1A is a sectional view of the binding band, and FIG. 1B is a view of the binding band. FIG. 6C is a view from the direction A of FIG. 7, and FIG. 7C is a view showing a state in which the lock claw is fitted and locked in the lock groove.

FIG. 2 is a cross-sectional view of an injection mold of one embodiment.

FIG. 3A is a configuration diagram of a main part of a clip portion having a lock claw and a lock groove of another aspect, and FIG. 3B shows a state in which the lock claw is fitted and locked in the lock groove. It is a figure.

4A and 4B are views showing a conventional binding band, in which FIG. 4A is a sectional view thereof, and FIG. 4B is a perspective view thereof.

FIG. 5 is a view showing a state immediately before the wire harness is held by the binding band and is engaged with the stud bolt of the panel.

FIG. 6 is a cross-sectional view of a conventional injection molding die.

[Explanation of symbols]

 21 binding band 22 winding band 23 winding band binding part (engaging part) 23a insertion hole 23b engaging claw 24 stud bolt locking part (locking part) 24a hollow cylindrical part 24b locking claw 25 clip part 25a 1st clip part 25b 2nd clip part 26 Panel (counterpart member) 26a Stud bolt 27 Hinge part 28a, 28b, 41 Lock claw (connecting / fixing means) 29a, 29b, 42 Lock groove (connecting / fixing means) 31 Gold Mold 34 cavity

Claims (2)

[Claims] 1. An insertion hole is formed in the base of the winding band portion and is inserted from a free end of the winding band portion, and is formed in the winding band portion provided in the insertion hole. A clip portion having an engaging portion formed with an engaging claw that engages with the saw-tooth uneven portion, and a hollow tubular shape that is erected at a predetermined position of the clip portion and is fitted into the outer periphery of the stud bolt of the mating member. Portion and an inner peripheral portion of the hollow cylindrical portion, and a locking portion having a locking claw for locking the stud bolt so as not to slip, and a predetermined clip portion between the locking portion and the engaging portion. A method of molding a binding hand, which is provided at a position and which flexibly connects the clip part, by injection molding, wherein the clip part is substantially perpendicular to the insertion hole via the hinge part. A pair of hollow cylinders should be And the mold molten resin into the formed cavity on the opposing surface of such injection filling, molding method of the binding band, which comprises forming a binding band. 2. The binding band according to claim 1, wherein the first clip portion and the second clip portion are separated by a hinge portion.
When the first and second clip parts are arranged on the same plane in the clip part via the hinge part, the first and second clip parts are provided.
A tying band having connecting / fixing means for connecting and fixing the clip portions.