JP3211544B2 - Binding device for wire harness and binding method using the binding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness tying tool for distinguishing and binding a specific electric wire and a general electric wire of a wire harness and a tying method using the tying tool.
The specific electric wire is positioned at the center of the general electric wire, and the space of the general electric wire accommodating portion can be adjusted according to the amount of the general electric wire arranged on the outer periphery.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, a wiring harness for a vehicle is mounted by projecting a wiring jig 2 at a required position on the upper surface of a wiring harness assembly drawing board 1, and these wiring jigs are attached. The required electric wire W is inserted into the second electric wire insertion portion 2a, and in this state, the outer peripheral surface of the electric wire group is wound and bound by a binding material such as a tape 3 while lifting the electric wire group from the electric wire insertion portion 2a.

[0003]

In the above-mentioned wire harness formed by bundling a large number of wires, it is necessary to reliably prevent noise from entering, or
Electric wires that must never be short-circuited with the vehicle body panel, for example, when a key or the like is inserted into a vehicle, it is directly connected to a battery that is constantly applied to a lamp system such as a headlamp, an electric door lock system, etc. It is preferable that the power supply line, the twisted power supply for the speaker, and the like be located at the center of the cross section and not located at the outer periphery in the group of converged power supplies. That is, in the power supply group, since a large amount of current flows, it is preferable that the power supply group be located at a center position where disconnection hardly occurs due to interference from a vehicle panel or the like. , Noise can be prevented.

[0004] However, according to the conventional method for binding a wire harness shown in FIG.
A large number of electric wires W are inserted at random from the upper end opening with respect to a, and the specific electric wire WS to be positioned at the center position of the above-mentioned electric wire group or the speaker twist electric wire is positioned and held at the center of the electric wire group. There is no means to do this.
At the time of wiring work, the worker may bind the specific electric wires WS while positioning them at the center. However, if the operator does not recognize which electric wire is the specific electric wire, the operator places these specific electric wires WS on the center. Can not be located.

On the other hand, when the specific electric wire WS is recognized and the bundle of the specific electric wire WS is positioned at the center position when the electric wires WS are bound by the tape 3, the specific electric wires WS are usually a plurality of electric wires WS. However, it is not easy to bind the plurality of specific electric wires WS while positioning them around the center. Therefore, conventionally, as shown in FIG. 9A, the problem that the specific electric wire WS to be positioned at the center of the cross section of the wire harness may be located at the outer peripheral portion of the wire harness can be surely solved. Did not.

To solve the above problem, as shown in FIG. 9B, a binding device 4 dedicated to specific electric wire positioning has been proposed. (Ultimate Embodiment 4-122574) The tying member 4 is provided with three projections 4b radially extending on the outer periphery of the substantially annular holding member 4a, and is specified by a tape in a state where the specific electric wire WS is accommodated in the holding member 4a. Electric wire WS
And the tying member 4 are fixed to each other, and a holding member 4a for the specific electric wire WS is provided.
In a state where other electric wires W are arranged on the outer peripheral surface of the electric wire W, the outer peripheries of these converged electric wires W are bound by a tape 3 to form a wire harness.

In the case where the binding device 4 is used, a plurality of projections 4
In order to wind the tape 3 along the outer peripheral surface of b, the outer diameter of the wire harness to be bundled needs to correspond to the outer diameter of the tying tool 4. Therefore, there is a problem that it is necessary to prepare various kinds of the tying members 4 made of different parts according to the change in the outer diameter of the wire harness.

Further, since the shape of the holding member 4a has a large opening and is open outward, the specific electric wire WS
May easily come out of the holding member 4a and cannot be positioned and held at the center of the wire harness, and there is no means for holding the electric wire W arranged on the outer periphery. Therefore, it is troublesome to wind the tape 3 to bundle the whole electric wire group. There is a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and allows a specific electric wire to be accurately positioned at the center of a cross section of a wire harness in a group of electric wires, and to be easily bound while being surrounded by other general electric wires. It is another object of the present invention to provide a tying tool that is versatile even when the outer diameter of the wire harness changes, and a method of tying the wire harness using the tying tool.

[0010]

In order to achieve the above object, according to the present invention, there is provided an annular specific electric wire holding portion having a cutout for allowing a specific electric wire to be inserted from a radial direction, and the specific electric wire holding portion. A general electric wire holding portion radially and integrally protruding outward with an interval in the circumferential direction from the outer peripheral surface of the portion,
The general electric wire holding portion includes a leg portion radially protruding from an outer peripheral surface of the specific electric wire holding portion, an inclined portion continuous to a tip of the leg portion, and an arc portion extending in a circumferential direction from the tip of the inclined portion. The distance between the outer peripheral surface of the specific electric wire holding portion and the arc portion is changed by the bending of the inclined portion and the leg portion, and the radial direction between the outer peripheral surface of the specific electric wire holding portion and the arc portion of the general electric wire holding portion. The present invention provides a binding device for a wire harness having a configuration in which the accommodation space for a general electric wire to be inserted from above can be adjusted according to the amount of the general electric wire to be inserted.

[0011] The general electric wire holding portion is provided in the range of two to four on the outer peripheral surface of the specific electric wire holding portion, and particularly, four general electric wire holding portions are arranged on the outer peripheral surface of the specific electric wire in a swastika shape. Is preferred. (Claim 2) It is also preferable that the general electric wire holding portion is provided with a set portion detachably attached to a wiring jig projecting from the wiring harness assembly drawing board. (Claim 3) However, it is not always necessary to provide the set portion.

Further, according to the present invention, an annular specific electric wire holding portion having a notch through which a specific electric wire can be inserted from a radial direction, and a leg projecting radially from an outer peripheral surface of the specific electric wire holding portion. The specific wire holding part, using a binding tool integrally formed with a general wire holding part consisting of a part, an inclined part continuous to the tip of the leg part, and an arc part extending in the circumferential direction from the tip of the inclined part. While inserting the specific electric wire, after inserting the general electric wire from the radial direction between the outer peripheral surface of the specific electric wire holding portion and the general electric wire holding portion, winding a tape along the outer surface of the arc portion of the general electric wire holding portion, Bundling of the wire harness, which adjusts according to the amount of general electric wire to insert the gap between the arc portion and the outer peripheral surface of the specific electric wire by bending the inclined portion and the leg of the general electric wire holding portion by the winding force of the tape. Offers a way.

[0013]

When the wire harness is bound by using the above-mentioned binding device, the binding device is set on the support pole on the wiring harness assembly drawing board, and then the specific electric wire is passed through the space from the gap at the tip of the general electric wire holding portion. Then, insert the notch into the specific wire holding part. Subsequently, the general electric wire is housed in the space of the general electric wire holding portion from the gap at the tip of the arc portion of the general electric wire holding portion. Then, the tape is wound around the outer peripheral surface of the general electric wire holding portion, and the general electric wires are bundled so as not to fall off from the binding device.

When this tape is wound around the outer surface of the circular arc portion, if the number of general electric wires is large and the outer diameter of the wire harness is large, the bending of the inclined portion of the general electric wire holding portion is small, but the number of general electric wires is small. Therefore, when the outer diameter of the wire harness is small, the inclined portion of the general electric wire holding portion is bent to fit the outer diameter of the wire harness by winding the tape. That is, the outer diameter of the binding device can be made to correspond to the outer diameter of the wire harness.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. As shown in FIG. 3, the binding device 6 is integrally formed of a flexible material. Examples of the material include polypropylene, nylon, PBT (polybutylene terephthalate), PVC (polyvinyl chloride), P.I. E (polyethylene), urethane, fluororesin, polyacetal, acryl, polycarbonate, polystyrene, ABS, epoxy and the like are good.

As shown in FIGS. 1 and 2, the tying member 6 has an annular small-diameter specific wire holding portion 6a, and the specific wire holding portion 6a holds the specific wire WS in the radial direction. A notch 6b is formed which can be inserted through the notch 6b.

On the outer peripheral surface of the specific electric wire holding portion 6a, there is provided a general electric wire holding portion 6c which projects integrally outward in a substantially swastika shape at four equally spaced positions on the circumference avoiding the notch 6b. Provided. The general electric wire holding portion 6c is provided with the specific electric wire holding portion 6a.
6d radially protruding from the outer peripheral surface of the
An inclined portion 6i that is inclined from the tip of the rim to a required angle in the circumferential direction;
An arc portion 6e extending in the circumferential direction coaxially with the specific wire holding portion 6a from the tip of the inclined portion 6i. A notch 6f into which the general electric wire W can be inserted from the radial direction is formed between the adjacent arc portions 6e.
6g for accommodating the general electric wire W between the e and the leg 6d.
Is formed.

One of the arc portions 6e of the general electric wire holding portion 6c.
One of them is provided with a set shaft portion 6h for detachably inserting and setting the support pole 7 on the wiring harness assembly drawing board 1 from above in a detachable manner. The number of the general electric wire holding portions 6c is not necessarily four, but may be three or five or more.

When binding the specific electric wire W / S of the wire harness and the general electric wire W using the tying tool 6, first,
As shown in FIG. 2, the set shaft 6h of the binding device 6 is inserted into the support pole 7 on the drawing board 1 and set. As shown in FIG. 5, a plurality of the binding devices 6 are arranged at regular intervals with respect to each of the electric wires W and WS serving as trunks of the wire harness.

Next, when wiring, as shown in FIG. 1, first, a specific electric wire W / S is passed from the notch 6f of the general electric wire holding portion 6c through the space 6g to the notch 6 as shown in FIG.
Insert the specific wire holding part 6a from f. Next, the general electric wire W is inserted from the radial direction, and the general electric wire holding portion 6 is inserted through the notch 6f.
c and inserted into the space 6g. After that, the specific electric wire W
The binding tool 6 having the / S and the general electric wire W inserted therein is lifted upward, and the set shaft 6h is pulled out from the support pole 7.

Then, as shown in FIG. 4, the tape 8 is wound around the outer periphery of the general electric wire holding portion 6c, that is, along the outer surface of the circular arc portion 6e. At this time, the set shaft 6h is also
And wound with a tape 8 together with the general electric wire holding portion 6c. The winding by the tape 8 does not need to be specially performed only at the portion where the binding device 6 is attached, and is performed when the tape is wound after the wire group is laid on the drawing board 1. After the tape 8 is wound, it may be put in a corrugated tube.

The general electric wire W accommodated in the general electric wire holding portion 6c is large and is accommodated in the space 6g without any gap.
In other words, when the wire harness has a large outer diameter D1, as shown in FIG. 4A, the inclined portion 6i and the leg portion 6d of the general electric wire holding portion 6c do not have a radius, and the tape 8 is substantially in an original state. It is wound. When the amount of the general electric wire W is large, the notch 6 f is largely opened, but since the opening is closed by the tape 8, the general electric wire W does not fall off from the binding device 6.

On the other hand, when the amount of the general electric wire W is small, the space 6
g, with the wire harness having a small outer diameter D2, the circular arc portion 6e of the general electric wire holding portion 6c is pressed by the winding force of the tape 8 when the tape 8 is wound, First, the inclined portion 6i is curved and the circular arc portion 6 is formed.
e and the space between the outer peripheral surface of the specific electric wire holding portion 6a and the space 6g are reduced. Further, when the amount of the general electric wire W is small, the leg 6d also bends as shown in FIG. in this way,
The arc portion 6e is bent radially inward so as to match the outer diameter D2 of the wire harness, and the diameter of the arc portion 6e is reduced, so that the general electric wire W is accommodated in the reduced space 6g without any gap.

As described above, when the tying member 6 is used, the specific electric wire W / S is held by the specific electric wire holding portion 6a provided at the center and positioned at the center of the general electric wire W, and the general electric wire W is specified. The wires are arranged substantially uniformly on the outer periphery of the wires WS and are bound in this state. Further, when the tape 8 is wound, the general electric wire W is also held in the circular arc portion 6e of the general electric wire holding portion 6c of the binding device 6, so that the operation of winding the tape 8 can be easily performed.

Further, since the general electric wire holding portion 6c is easily bent, even if the amount of the general electric wire W changes, the general electric wire holding portion 6c may be used.
The general electric wire W can be held without looseness because the general electric wire W can be accommodated with the volume of the space 6g of c being variable and the general electric wire holding portion 6c is fastened by tape winding.

Thus, the outer diameters D1 to D1 of the wire harness
The change in D2 is also versatile, and there is no need to prepare many types of binding tools 6 according to the outer diameter, and component management becomes easy. Further, since the area of the outer peripheral surface of the general electric wire holding portion 6c is large, there is no possibility that the general electric wire holding portion 6c breaks through the tape 8 or the like.

FIG. 7 shows a modification of the tying member, in which two general electric wire holding portions 6c are provided. In this case, the length of the arc portion 6d is increased, and the length of the inclined portion 6i is also increased.

FIG. 8 also shows a modification of the tying tool, which does not have the set portion 6h for the jig. The binding tool 6 inserts the specific electric wire WS into the specific electric wire holding portion 6a while being gripped by the operator. In this state, the tying tool 6 'is supported by the specific electric wire, and the general electric wire W is inserted into the general electric wire accommodating portion on the outer periphery of the specific electric wire while holding the tying tool 6' on the specific electric wire WS. ing.

[0029]

As is apparent from the above description, the binding device for a wire harness of the present invention accommodates a specific electric wire in the center specific electric wire holding portion, and stores the general electric wire around the outer periphery of the specific electric wire holding portion. By storing the specific electric wire in the electric wire holding portion, the specific electric wire can be accurately positioned at the center of the cross section of the general electric wire and bound.

When the number of general wires is large and the outside diameter of the wire harness is large, the bending of the general wire holding portion is small when winding a tape or the like, but the number of general wires is small and the outside diameter of the wire harness is small. When is small, the general electric wire holding portion bends to fit the outer diameter of the wire harness when winding a tape or the like. This allows
Variations in the outer diameter of the wire harness are also versatile, and there is no need to prepare various types of bundling tools according to the outer diameter, which facilitates component management.

[Brief description of the drawings]

FIG. 1 is a front view of a binding device of the present invention.

FIG. 2 is a side view of a binding device set on a support pole of an assembly drawing board.

FIG. 3 is a perspective view of a binding device.

4A is a front view of the binding device when the outer diameter of the wire harness is large, and FIG. 4B is a front view of the binding device when the outer diameter of the wire harness is small.

FIG. 5 is a plan view of an arrangement example of a tying tool with respect to each electric wire.

FIG. 6 is a front view showing a modification of the binding device of the present invention.

FIG. 7 is a front view showing another modification of the binding device of the present invention.

FIG. 8 is a perspective view of a conventional wiring jig.

9A is a cross-sectional view of a wire harness in which a specific electric wire is shifted from the center, and FIG. 9B is a front cross-sectional view of a conventional binding device.

[Explanation of symbols]

 W General electric wire WS Specific electric wire 1 Assembly drawing board 6 Binding tool 6a Specific electric wire holding part 6b Notch 6c General electric wire holding part 6g Space 6h Set shaft part 6i Inclined part 7 Support pole 8 Tape

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-130235 (JP, A) JP-A 1-122574 (JP, U) JP-A 63-77389 (JP, U) JP-A 62- 14779 (JP, U) Fully open sho 56-122877 (JP, U) Fully open sho 63-17384 (JP, U) Fully open sho 51-72787 (JP, U) (58) Field surveyed (Int. ⁷ , DB name) F16L 3/00-3/24

Claims (4)

(57) [Claims] An annular specific electric wire holding portion having a notch through which a specific electric wire can be inserted in a radial direction, and radially outward integrally spaced apart from an outer peripheral surface of the specific electric wire holding portion in a circumferential direction. A protruding general wire holding portion, wherein the general wire holding portion radially protrudes from an outer peripheral surface of the specific wire holding portion, an inclined portion continuous to a tip of the leg portion, and a tip of the inclined portion. From the outer peripheral surface of the specific electric wire holding portion and the circular arc portion by the bending of the inclined portion and the leg portion, and the outer peripheral surface of the specific electric wire holding portion and the general electric wire holding portion. A wire harness tie having a configuration in which a space for accommodating a general electric wire to be inserted from the radial direction with an arc portion of the portion can be adjusted according to an amount of the general electric wire to be inserted. 2. The general electric wire holding portion is provided in a range of two to four on the outer peripheral surface of the specific electric wire holding portion.
4. The binding device for a wire harness according to claim 1. 3. The wire harness according to claim 1, wherein the general wire holding portion is provided with a set portion detachably attached to a wiring jig projecting from a wire harness assembly drawing board. Tying tool. 4. An annular specific electric wire holding portion having a notch through which a specific electric wire can be inserted from a radial direction, a leg portion projecting radially from an outer peripheral surface of the specific electric wire holding portion, and a tip of the leg portion. Using a binding device integrally formed with a general electric wire holding portion consisting of a continuous inclined portion and an arc portion extending in the circumferential direction from the tip of the inclined portion, while inserting a specific electric wire into the specific electric wire holding portion, After inserting a general electric wire from the radial direction between the outer peripheral surface of the specific electric wire holding portion and the general electric wire holding portion, a tape is wound along the outer surface of the circular arc portion of the general electric wire holding portion, and the general electric wire is wound by the winding force of the tape. A method of binding a wire harness in which a slanted portion and a leg portion of a holding portion are bent to adjust a gap between the arc portion and the outer peripheral surface of the specific wire in accordance with a general wire amount.