JP3243908B2 - Wire harness tying tool and wire harness tying method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tying tool for bundling a plurality of electric wires including a specific electric wire, and more particularly to a tie for positioning and holding a specific electric wire 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 (1), wiring jigs 2 are protruded and attached at required positions on the upper surface of the wiring harness assembly drawing board 1, and required electric wires W are inserted into electric wire insertion portions 2a of these wiring jigs 2. In this state, the outer peripheral surface of the wire group is bound and bound by a bonding material such as tape 3 while lifting the wire group from the wire insertion portion 2a.

[0003]

In the above-mentioned wire harness formed by bundling a large number of electric wires, it is necessary to avoid a short circuit with a vehicle body panel, for example, a battery to which a voltage is constantly applied. It is preferable that the power supply line directly connected to the power supply line be located at the center of the cross section of the bundled electric wires and not at the outer periphery. That is, since a large amount of current flows through the power supply line, it is preferable that the power supply line be located at a center position where disconnection is unlikely to occur due to interference from a vehicle panel or the like.

However, in the conventional method of binding a wire harness shown in FIG.
With respect to a, a large number of electric wires W are inserted at random 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. At the time of wiring work, it is only necessary for the worker to bind while positioning the specific wires at the center, but if the worker does not know which wires are the specific wires, it is not possible to position these specific wires at the center. Absent. On the other hand, when recognizing the specific electric wires and positioning the specific electric wires at the center position when attempting to bind them with the tape 3, since the specific electric wires are usually a plurality of wires, the specific electric wires are usually positioned around these specific electric wires. 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 to be located at the center of the cross section of the wire harness may be located at the outer peripheral portion of the wire harness. Did not.

[0006] In order to solve the above problem, as shown in FIG. 7, a binding device 4 dedicated to specific electric wire positioning has been proposed. (Actual opening flat 1-122574) The tying member 4 is provided with three projections 4b extending radially on the outer periphery of a substantially annular holding member 4a, and the specific wire W is provided on the holding member 4a.
-Specific electric wire and tying tool 4 with tape in a state where -S is accommodated.
In a state where other general electric wires W are arranged on the outer peripheral surface of the holding member 4a of the specific electric wire WS, the outer peripheries of these converged electric wires are bound by the tape 3 to form a wire harness. .

In the case where the binding device 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 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 types of the tying members 4 made of different parts according to the change of 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 is more likely to come out of the holding member 4a, and may not be positioned and held at the center of the wire harness. Since there is no means for holding the electric wires W to be arranged, there is a problem that it takes time and effort to wind the tape in order to bundle the entire electric wire group.

The present invention has been made in view of the above-described problem, and a specific electric wire is positioned at a center of a cross section of a wire harness in a group of electric wires, and can be easily bound in a state surrounded by other general electric wires. It is an object of the present invention to provide a binding tool and a binding method using the binding tool.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a cylindrical specific electric wire holding portion for inserting and holding a specific electric wire, and an interval between the outer peripheral surfaces on both axial sides of the specific electric wire holding portion. The plurality of wings protruded and opened are integrally formed of urethane rubber, a rubber-based material such as elastomer, or another flexible material, and both sides in the axial direction are formed on the outer peripheral surface of the specific wire holding portion. It is another object of the present invention to provide a binding device for a wire harness, wherein a general electric wire accommodating space partitioned in a circumferential direction by the blade portion is provided.

The cylindrical specific electric wire holding portion is formed by winding a specific electric wire around an inner surface of a sheet-like base.
The blades protrude from both sides of the outer surface of the sheet-like base at an interval. Alternatively, the specific electric wire holding portion is formed in advance into a cylindrical shape having a slit along the axial direction.

Further, in the present invention, a specific electric wire holding portion having a cylindrical shape for inserting and holding a specific electric wire, and a plurality of blade portions projecting from both outer circumferential surfaces in the axial direction of the specific electric wire holding portion are provided. Using a binding device made of a flexible material having, after passing the specific wire through the specific wire holding portion of the binding device, each of the plurality of general wire receiving spaces partitioned by the wings on the outer peripheral surface of the specific wire holding portion. The present invention provides a method for binding a wire harness, which comprises passing a general electric wire, and then winding and binding an adhesive tape to an outer peripheral surface of the general electric wire while bending the wings according to the amount of the general electric wire. .

Alternatively, a tying member having wing portions projecting from both sides of an outer surface of a sheet-like base made of a flexible material and spaced apart from each other is used, and the wing portion is provided on the inner surface of the base portion of the tying member. A specific electric wire is arranged in a direction perpendicular to the projecting side portions, and in this state, the base is wound into a cylindrical shape with the specific electric wire wound inside, and a double-sided tape is wrapped around the outer periphery of the specific electric wire holding portion. Then, on the outer peripheral surface of the specific electric wire holding portion, the general electric wires are respectively inserted into the general electric wire accommodating spaces partitioned by the blade portions projecting from both sides in the axial direction, and the general electric wires are temporarily fixed by the double-sided tape. Then, the present invention provides a method for binding a wire harness, wherein an adhesive tape is wound around the outer peripheral surface of the general electric wire while bending the wing portion in accordance with the amount of the general electric wire, and then tied.

[0013]

The wire harness formed by using the above-mentioned tying device is formed by accommodating a specific electric wire in a cylindrical specific electric wire holding portion, and forming an outer periphery of the specific electric wire holding portion by an adjacent wing portion protruding outward. It is formed by laying a general electric wire in a general electric wire accommodating space and winding the outer periphery of the general electric wire with an adhesive tape. Therefore, the important specific electric wire is surely arranged at the central portion of another general electric wire.

Further, even when the number of the general electric wires to be wired is small and the wings protrude outward from the outer periphery of the general electric wire, the tying member is formed of a flexible material. Therefore, the wings are bent along the outer peripheral shape of the general electric wire to absorb the error, so that the wire harness can be formed by winding the tape with no gap.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments shown in the drawings. As shown in FIGS. 1 to 3, in the present invention, the specific electric wire WS is positioned and held at the center of the general electric wire W forming the wire harness by using the wire harness tying tool 10 shown in FIG. 2. is there.

The binding device 10 includes a sheet-like base 10a having a length capable of covering the outer periphery of the specific wires WS in a state where all of the specific wires WS are bundled, and the upper surface 10 of the base 10a.
Eight blades 10c are provided to project upward at equal intervals in the length direction from both side portions 10f of b (downward in FIG. 2). The binding device 10 is formed of a rubber material such as urethane rubber or an elastomer, or other flexible material, and the base 10a and the blade 10c are bent so that the diameters of the specific electric wire WS and the general electric wire W are obtained. It is set so as to absorb the error in accordance with the outer shape and the outer shape.

When a wire harness is formed using the tying tool 10, as shown in FIG. 3A, first, the specific electric wire WS is wired on an assembly drawing board (not shown), The binding device 10 is arranged so as to be orthogonal to the length direction with respect to the specific electric wire WS, that is, to be orthogonal to both side portions 10f on which the blade portions 10c are protruded.
0c is projected outward with respect to the base 10a.

Next, the base 10a is wound inward so that the lower surface 10d side of the base 10a contacts the specific electric wire WS, and a required position on the upper surface 10b side of the base 10a is tape-wrapped with the double-sided tape 11. As a result, a special wire holding portion 13 having a cylindrical shape is formed, and as shown in FIG. 3 (B), the wing portion 10c is provided on the outer periphery of the special wire holding portion 13 in which the specific wire WS is accommodated. At a required interval (45 ° in this embodiment) in the circumferential direction, the general electric wire housing space 14 is formed between them. Thus, the binding device 1
0, a plurality of bundled specific electric wires WS in the specific electric wire holding portion 13 formed by winding the base 10a.
Can be easily covered and protected.

From the above state, the general electric wire W is laid. Thereby, the general electric wire W becomes as shown in FIG.
The general electric wire W ′ inserted into the general electric wire accommodating space 14 and laid first in the general electric wire accommodating space 14 among the general electric wires W is coated on the upper surface 10 b of the base 10 a by the double-sided tape 11. , The general electric wire can be laid uniformly.

After completion of the wiring of the predetermined number of the general electric wires W, the outer periphery of the general electric wires W is tape-wrapped with the adhesive tape 12,
Assume the assembled state shown in FIG. At this time, even in the case where the number of the general electric wires W to be wired is small and the blade portion 10c of the binding tool 10 projects outward from the outer periphery of the general electric wire W to be wired, as described above, Since the binding device 10 is formed of a flexible material, the wing portion 10c bends in the winding direction of the adhesive tape 12 so as to correspond to the outer peripheral shape of the laid general electric wire W without any gap. Can be united.

Therefore, the binding device 10 can be used for wire harnesses having different diameters regardless of the diameter of the wire harness to be formed.

As shown in FIG. 1, the wire harness using the binding device 10 securely accommodates an important specific electric wire WS in a specific electric wire holding portion 13 formed by winding a base 10a. WS can be reliably arranged at the center of the general electric wire W. The double wire tape 11 attached to the outer periphery of the base 10a allows the general electric wire W to be evenly laid, and the binding device 10 is formed of a flexible material. WS can be more reliably protected, and external shocks can be absorbed and reliably protected.

FIG. 4 shows a modification of the above-mentioned tying tool. In this tying tool 10 ', a specific electric wire holding portion 13' having a cylindrical shape is formed in place of the base 10a. The specific wire holding portion 13 'has a slit 10e extending in the axial direction.
The slit 10e is bent in the direction of the arrow in the figure to be elastically deformed, thereby accommodating the specific electric wire WS therein.

[0024]

As is apparent from the above description, in the binding device for a wire harness of the present invention, both ends of a cylindrical specific electric wire holding portion for accommodating a specific electric wire requiring protection are provided.
Providing a plurality of blades projecting outward at required intervals in the circumferential direction, forming a general electric wire accommodating space between these adjacent blades, and laying a general electric wire in the general electric wire accommodating space. Therefore, the specific electric wire can be reliably arranged at the central portion of the general electric wire.

Further, a specific wire holding portion is formed by winding a sheet-shaped base portion and winding the outer periphery of the base portion with a double-sided tape, and laying a general electric wire in a general wire receiving space on the outer circumference of the specific wire holding portion. Therefore, the general electric wire previously laid in the general electric wire accommodating space is temporarily fixed by the double-sided tape, so that the general electric wire can be uniformly laid.

Further, since the tying member is formed of a flexible material, the tying member is bent in accordance with the outer peripheral shape of the wire to be laid, thereby absorbing an error. Therefore, it is possible to form wire harnesses of several diameters using a kind of binding tool.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing a state where a wire harness is formed using a tying member of the present invention.

FIG. 2 is a perspective view showing a binding device.

FIGS. 3A, 3B, 3C, and 3D are schematic diagrams showing operation steps of forming a wire harness.

FIG. 4 is a perspective view showing a modification of the binding device.

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 showing a conventional tying tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Binding tool 10a Base 10c Blade 11 Double-sided tape 12 Adhesive tape 13 Specific electric wire holding part 14 General electric wire accommodation space W General electric wire WS Specific electric wire

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-275134 (JP, A) JP-A-7-105743 (JP, A) JP-A-7-130236 (JP, A) JP-A-7-107 122135 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01B 13/00 H01B 13/012 H01B 7/00

Claims (5)

(57) [Claims] 1. A cylindrical specific electric wire holding portion for inserting and holding a specific electric wire, and a plurality of blade portions projecting from both outer peripheral surfaces in both axial directions of the specific electric wire holding portion are integrally formed. A binding for a wire harness, which is formed of a flexible material, and provided on the outer peripheral surface of the specific electric wire holding portion a general electric wire accommodating space in which both ends in the axial direction are circumferentially partitioned by the blades. Utensils. 2. The cylindrical specific electric wire holding portion is formed by winding a specific electric wire around an inner surface of a sheet-like base, and the wings are spaced on both sides of an outer surface of the sheet-like base. The binding device for a wire harness according to claim 1, wherein the binding device is protruded. 3. The binding device for a wire harness according to claim 1, wherein the specific electric wire holding portion is formed in advance into a cylindrical shape having a slit extending in an axial direction. 4. A flexible member having a cylindrical specific electric wire holding portion for inserting and holding a specific electric wire, and a plurality of blade portions projecting from both outer circumferential surfaces in both axial directions of the specific electric wire holding portion. After passing the specific wire through the specific wire holding portion of the binding device using the binding device made of a material, the general wires are passed through the plurality of general wire receiving spaces partitioned by the wings on the outer peripheral surface of the specific wire holding portion. Thereafter, the adhesive tape is wound around the outer peripheral surface of the general electric wire while bending the wing portion in accordance with the amount of the general electric wire, and the bundle is tied. 5. A binding device comprising a sheet-like base made of a flexible material, and a wing portion protruding at intervals on opposite sides of an outer surface of the sheet-like base portion, wherein the wing portion is provided on an inner surface of the base portion of the binding device. A specific electric wire is arranged in a direction perpendicular to the projecting side portions, and in this state, the base is wound into a cylindrical shape with the specific electric wire wound inside, and a double-sided tape is wrapped around the outer periphery of the specific electric wire holding portion. Then, on the outer peripheral surface of the specific electric wire holding portion, the general electric wires are inserted into the general electric wire accommodating spaces partitioned by the blades projecting from both sides in the axial direction, and the general electric wires are temporarily fixed by the double-sided tape. Thereafter, an adhesive tape is wound around the outer peripheral surface of the general electric wire while bending the wing portion in accordance with the amount of the general electric wire, and the bundle is bound.