JPH084948A - Device and method for binding wire harness - Google Patents

Abstract

PURPOSE:To easily carry out the binding of wire surrounded by other regular cables by positioning the specified cable at the center of the section of the wire harness. CONSTITUTION:A binding device 10 having a strip-shaped band part 11 which is long and flexible and capable of winding the cables in the spiral condition along the longitudinal direction of the specified cable W-S and a flexible projection 12 which is projected from the outer circumference of the band part in the wound condition with the specific space L apart, and forms the space 13 to store the regular cable partitioned in the circumferential direction over the outer circumference is provided. A binding device is wound in the spiral condition around the outer circumference of the specified cable, and regular wires W are arranged in the space to store the regular wires partitioned in the circumferential direction by the projection projected from the outer circumference of the binding device to surround the whole outer circumference of the specified cable, and a tape 14 is wound around the outer circumference of the group of the regular wires.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bundling tool for bundling a plurality of electric wires including a specific electric wire, and more particularly to enabling the specific electric wire to be positioned and held at the center of a general electric wire.

[0002]

2. Description of the Related Art Conventionally, a wire harness for a vehicle is shown in FIG.
As shown in FIG. 1, the wiring jig 2 is projected and attached at a required position on the upper surface of the wire harness assembly drawing board 1, and the required electric wire W is inserted into the electric wire insertion portion 2a of these wiring jigs 2. In this state, while the electric wire group is being lifted from the electric wire insertion portion 2a, the outer peripheral surface of the electric wire group is wrapped and bound with a binding material such as tape 3.

[0003]

In the wire harness formed by bundling a large number of electric wires as described above, it is absolutely necessary to avoid short-circuiting with the vehicle body panel, for example, a battery to which a constant voltage is applied. It is preferable that the power supply line directly connected to the power supply line is located in the central part of the cross section and not in the outer peripheral part of the bundled electric wire group. That is, since a large amount of current is flowing through the power supply line, it is preferable to position the power supply line at a central position where disconnection is less likely to occur due to interference from a vehicle panel or the like.

However, in the conventional wire harness binding method shown in FIG. 5, the wire insertion portion 2 of the wire laying jig 2 is used.
With respect to a, a large number of electric wires W are randomly inserted from the upper end opening, and there is no means for positioning and holding the specific electric wire to be positioned at the center position of the power supply line or the like at the center of the electric wire group. When laying work, it is only necessary for the worker to bind the specific electric wires while positioning them in the center, but if they do not recognize which electric wire is the specific electric wire, they cannot be positioned in the center. Absent. On the other hand, when recognizing the specific electric wires and positioning the specific electric wires at the central position when binding them with the tape 3, since the number of the specific electric wires is usually plural, while positioning the plural specific electric wires at the center. It is not easy to unite.

Therefore, conventionally, as shown in FIG. 6, it is possible to surely solve the problem that the specific electric wire WS which is desired to be located at the center of the cross section of the wire harness may be located on the outer peripheral portion of the wire harness. There wasn't.

To solve the above-mentioned problem, a binding tool 4 dedicated to positioning a specific electric wire has been proposed as shown in FIG. (Actual Kaihei 1-222574) The above-mentioned binding tool 4 is provided with three projections 4b extending radially on the outer periphery of the substantially annular holding member 4a, and the holding member 4a accommodates the specified electric wire W-S with a specific electric wire. And the binding tool 4 are fixed to each other, and the other outer wires W are arranged on the outer peripheral surface of the holding member 4a of the specific wire W-S. Is forming.

When the above-mentioned binding tool 4 is used, a plurality of projections 4
Since the tape 3 is wound along the outer peripheral surface of b, the outer diameter of the wire harness to be focused needs to correspond to the outer diameter of the binding tool 4. Therefore, there is a problem in that a large number of tying tools 4 that are separate parts must be prepared according to changes in the outer diameter of the wire harness. Further, since the holding member 4a has a large opening and is open outward, the specific electric wire W-S is more likely to come out than the holding member 4a, and it may not be possible to position and hold the wire at the center of the wire harness, and the outer circumference is Since there is no means for holding the electric wires W to be arranged, there is a problem in that it takes time and effort to wind the tape in order to bundle the whole electric wire group.

The present invention has been made in view of the above-mentioned problems, and in a wire group, a specific wire is located at the center of the cross section of a wire harness and can be easily bundled while being surrounded by other general wires. An object is to provide a binding tool and a binding method using the binding tool.

[0009]

In order to achieve the above-mentioned object, the present invention provides a band-shaped band portion having a long flexibility which is wound in a spiral state along a length direction of a specific electric wire in claim 1. And a flexible protrusion that protrudes from the outer periphery of the band portion at a required distance in a wound state and forms a general electric wire accommodation space partitioned in the circumferential direction on the entire outer periphery, and is bound by the band portion. The wire harness tying device is configured to surround the specified electric wire group with the general electric wire group arranged in the general electric wire accommodation space.

The band portion and the protrusion protruding from the band are formed by integrally molding a rubber-based material such as urethane rubber or elastomer rubber or a flexible resin-based material such as nylon or polyethylene. It is formed, and its hardness can be selected depending on the molding material.

The projection protruding from the band portion is provided on at least one surface of the band portion so as to project to the outer circumference when wound around a specific electric wire, but it is also provided on both surfaces of the band portion to project from the inner circumference. Then, the protrusions may be positioned between the specific electric wires to be focused to position and hold the specific electric wires.

The band portion may be formed into a straight shape at the time of molding, and may be spirally wound around the outer peripheral surface of the specific electric wire group when used, or the band portion may be previously formed into a spiral shape. You may stay.

Further, according to a second aspect of the present invention, in the second aspect of the present invention, there is used a binding tool in which projections are provided on at least one surface of a long band portion at required intervals in a length direction, and the binding tool is provided on an outer periphery of a specific electric wire. A general electric wire is placed in a general electric wire accommodating space that is circumferentially partitioned by the projection protruding from the outer circumference of the binding tool in a spiral shape, and the general electric wire group surrounds the entire outer circumference of the specific electric wire. The present invention provides a method for binding a wire harness in which a tape is wound around the outer circumference of a general electric wire group.

When the tape is wound around the outer circumference of the general electric wire group and the amount of the general electric wires is small and the projection is projected to the outer circumference, the tape is wound while bending the projection.

[0015]

In the binding device according to the first aspect of the invention, since the band portion is spirally wound around the outer periphery of the specific electric wire, even if only one specific electric wire is provided, it can be used while being in contact with the outer periphery thereof. Even with a large number, it is possible to wind with a large winding diameter. That is, it can be used regardless of the amount of the specific electric wire to be bound.

Further, since the entire outer circumference is divided into the general electric wire accommodating space by the projections protruding from the band portion wound around the outer circumference of the specific electric wire, the general electric wires are uniformly arranged in the general electric wire accommodating space. The entire outer circumference of the specific electric wire can be reliably surrounded by the general electric wire group. Moreover, since the protrusion has flexibility, it can be flexed according to the amount of the general electric wire, and thus can be commonly used even if the outer diameters of the wire harnesses including the specific electric wire and the general electric wire are different. it can.

Further, in the binding method according to the second aspect, when the specific electric wire is wound in advance by the binding tool, the outer periphery thereof is partitioned by the projections of the binding tool, and the general wires are averaged in the partitioned general wire housing space. In this case, the general electric wire can be arranged on the entire outer circumference of the specific electric wire, and the specific electric wire can be surely arranged at the center position of the wire harness. Furthermore, when a tape is wound around the outer periphery of a general electric wire to bind it, if the projection is protruding, the projection can be bent to wind the tape, and even if the outer diameter of the wire harness is different, It becomes possible to unite.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. 1 to 3 show a first embodiment, and as shown in FIG. 1, a tying member 10 is provided with a long band portion 11 and one surface 11a of the band portion 11 projecting at regular intervals in the length direction. The projection 12 is formed. The band portion 11 and the protrusion 1
2 is integrally molded from a rubber-based material such as urethane rubber or elastomer rubber or a resin-based material such as nylon or polyethylene. Band portion 11 and protrusion 12
Has flexibility and a required hardness.

The protrusion 12 has a thin cylindrical pin shape.
As shown in FIG. 3, the height H is set to be equal to or larger than the diameter of at least one large-diameter general electric wire W. Needless to say, the height H may be increased. Also,
The interval L between the adjacent protrusions 12 is 1/3 to 1/5 of the outer peripheral length of the specific electric wire group in a state of being wound around the specific electric wire W-S, and at least 3 or more is provided on the outer circumference of the specific electric wire.
It is preferable that, as in the embodiment, the five protrusions 12 project at intervals in the circumferential direction to provide the general electric wire accommodation space 13 divided into five.

The binder 10 composed of the band portion 11 and the protrusion 12 is different in the diameter of the specific electric wire group to be converged and the diameter of the wire harness for arranging the general electric wire W on the outer periphery of the specific electric wire group. Even so, I try to share it. Therefore, the height H and the interval L of the projections 12 are set to average values, the general electric wire accommodation space 13 divided into a plurality of parts around the specific electric wire group by the projections 12 is provided, and The projection 12 may be provided so that the general electric wire W is held in the electric wire housing space 13 and the general electric wire W is positioned and held on the entire outer circumference of the specific electric wire W-S.

When a wire harness is formed by using the binding tool 10, first, the specific electric wire WS is assembled and the drawing board is attached.
At the same time as laying on the wire (not shown), as shown in FIG.
The binder 10 is wound around the specific electric wire W-S while being bent in a spiral shape in the length direction. At this time, the binding tool 10 is wound from the other surface 11b side of the band portion 11 on which the protrusion 12 is not provided. As a result, the projections 12 are projected outward with a predetermined distance L in the circumferential direction centering on the gathered specific electric wires W-S, and the general electric wire housing space 13 defined by the adjacent projections 12 and 12 is formed. It

Next, the general electric wire W is laid around the specific electric wire group. The general electric wires W are each general electric wire accommodation space 1
3, and as shown in FIG. 3, they are arranged on the entire outer circumference of the specific electric wire group with a substantially uniform thickness, and are held by the projections 12 without displacement.

After the wiring of the predetermined number of general electric wires W is completed, the outer circumference of the general electric wire group is tape-wrapped with the adhesive tape 14 to form a bundled state. At this time, when the amount of the general electric wire W to be laid is small and the projection 12 of the binding tool 10 projects outward from the outer periphery of the general electric wire W, the projecting projection 12 is attached to the tape 14
Bind while bending in the winding direction.

As described above, since the binding tool 10 is formed of a flexible rubber-based material or resin-based material, the protrusion 12 can be easily bent as described above. Therefore, it is possible to correspond to the outer diameter of the wire harness including the specific electric wire W-S and the general electric wire W, and
It can be commonly used for all wire harnesses having different outer diameters.

In the wire harness formed by using the binding tool 10, the specific electric wire W-S laid inside the wound band portion 11 is surely arranged at the center position of the general electric wire W. Therefore, even if an impact from the outside, for example, the edge of the vehicle body panel comes into contact with the wire harness, the general electric wire is first contacted, and the specific electric wire WS can be reliably protected.

FIG. 4 shows a modified example of the binding tool 10, in which the band portion 11 'is preliminarily formed in a spiral shape with a required inner diameter. According to this binding tool 10, the spiral band portion 11 ′ is wound around the specific electric wire group while being stretched, and the wound band portion 1 is wound.
1'because the force that elastically returns to the original curved state acts,
The focused state of the specific electric wire group can be easily maintained.

[0027]

As is apparent from the above description, in the binding device according to the first aspect of the present invention, since the long band portion having flexibility is wound around the outer periphery of the specific electric wire,
It can be used regardless of the amount of the specific wire. Also,
Since the general electric wire accommodation space defined by a plurality of protrusions protruding from the band portion is formed on the outer periphery of the specific electric wire bundled by the binding tool, the general electric wires can be evenly laid in the general electric wire accommodation space. Thus, the entire outer circumference of the specific electric wire can be reliably surrounded by the general electric wire group, and the specific electric wire can be arranged at the center position of the wire harness. Moreover, since the protrusion has flexibility, it can be adapted to the outer diameter of the wire harness including the specific electric wire W-S and the general electric wire W by bending the general electric wire according to the amount of the general electric wire to be laid. Therefore, it can be commonly used for all wire harnesses having different outer diameters.

Further, as in the binding method according to the second aspect, by winding the specific electric wire with the binding tool, the outer periphery of the specific electric wire can be partitioned by the projection of the binding tool, and the partitioned general electric wire accommodation space By averaging the general electric wires to the specific electric wires, the specific electric wires can be reliably arranged at the center position of the wire harness. Furthermore, when a tape is wound around the outer periphery of the laid general electric wire to bind it, and if the protrusion is protruding from the outer peripheral surface, the protruding protrusion can be bent and wound with the tape. Even if the diameters are different, it is possible to bind the wire harness with the binding tool having the above configuration.

[Brief description of drawings]

FIG. 1 is a perspective view showing a binding tool of the present invention.

FIG. 2 is a perspective view showing a state in which the binding tool is wrapped around the outer periphery of a specific electric wire.

FIG. 3 is a cross-sectional view showing a state in which a tape is wound around an outer circumference of a wired general electric wire.

FIG. 4 is a perspective view showing a modified example of the binding tool.

FIG. 5 is a perspective view showing a conventional wiring method.

FIG. 6 is a sectional view of a wire harness showing a conventional problem.

FIG. 7 is a cross-sectional view of a wire harness bound using a conventional binding tool.

[Explanation of symbols]

 10 Bundling tool 11 Band part 12 Protrusion 13 General electric wire accommodation space 14 Tape W General electric wire WS Special electric wire

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display F16L 3/223

Claims (2)

[Claims] 1. A strip-shaped band portion having a long flexibility which is wound in a spiral state along a length direction of a specific electric wire, and in a wound state, protrudes at a required interval from the outer periphery of the band portion and has an outer periphery. A flexible wire forming a general electric wire accommodation space partitioned in the circumferential direction as a whole, and a specific electric wire bound by the band portion is surrounded by a general electric wire group arranged in the general electric wire accommodation space. A binding tool for wire harnesses. 2. A binding tool comprising a long band portion and at least one surface of which is provided with protrusions at required intervals in the length direction, and the binding tool is spirally wound around the outer circumference of the specific electric wire, and the outer circumference of the binding tool is measured. By arranging the general electric wire in the general electric wire accommodation space formed by partitioning the entire outer circumference in the circumferential direction by the more protruding projection, the general electric wire group surrounds the entire outer circumference of the specific electric wire, and then the outer circumference of the general electric wire group. A method of binding wire harnesses that wraps tape around.