JPH10106367A - Corrugated tube attaching tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely and smoothly attach a tube to an electric wire bundle by installing an auxiliary guide to receive a slit tip end part of a corrugated tube in the bottom. SOLUTION: An auxiliary guide 15 is extended in the bottom part 11 of this attaching tool. This auxiliary guide 15 is to receive an edge part (a slit tip end part) of a corrugated tube 1 sent out of a flange 12 toward an electric wire bundle W and is formed into U shaped cross section shape constituted of a bottom plate part 15A continued from the bottom part 11 and side plates 15B which are unitedly joined to both side lines of the plate part 15A to cover the electric wire bundle W. Consequently, a slit edge part is guided by the auxiliary guide 15 from the time when the edge part is sent out of the flange 14 to the time when it is put on the electric wire bundle W, so that the guiding property of the corrugated tube 1 is improved and as a result, the corrugated tube 1 is reliably attached to the electric wire bundle W without being interfered with the electric wire bundle W.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated tube mounting device, and more particularly, to manufacturing a wire harness and a subassembly (hereinafter, collectively referred to as a "wire assembly") constituting the wire harness, the main components of the wire assembly. The present invention relates to a corrugated tube mounting tool used when covering a bundle of electric wires with a corrugated tube.

[0002]

2. Description of the Related Art In general, a corrugated tube is an exterior component that is formed on a resin tube material by forming a slit in the center line direction and expanding the slit to cover the outer periphery of a wire bundle of a wire assembly. In order to facilitate the mounting of such a corrugated tube, various mounting tools have been conventionally proposed.

[0003] For example, in the mounting device of Japanese Patent Application No. 6-36081 (see Japanese Patent Application Laid-Open No. 7-245840) previously proposed by the present applicant, substantially U which receives a bundle of electric wires to which a corrugated tube is to be mounted. The bottom of the character shape, a pair of side walls that form a pair continuously with the bottom, and that divide the upper side along a line obliquely intersecting with the wire bundle guided by the bottom in parallel to each other, A flange is provided on the upper side and protrudes in a direction away from the side wall of the other party.

[0004] When the corrugated tube is mounted on the wire assembly, both side walls are sandwiched with each other with the wire bundle of the wire assembly being guided at the bottom in advance.
Next, a corrugated tube is introduced into the upper side portion of both side wall portions by expanding a slit from the tip portion, and the inner periphery of the corrugated tube is guided by each flange of the both side wall portions, while the corrugated tube is guided to the bottom portion by the wire bundle. They approached each other and covered them sequentially from the tip. Thereby, the corrugated tube is sent out to the wire bundle in a state where the slit is expanded, and after being sent out to the wire bundle, it is mounted so as to cover the wire bundle by closing the slit by its own elasticity. I was

[0005]

In the prior art described above, in the process in which the tip of the corrugated tube reaches the wire bundle from the flange, only the tip of the corrugated tube is sent out to the wire bundle in an unguided state. there were. Therefore, while the tip of the corrugated tube is sent out from the flange to the wire bundle, the edge of the slit in the free state may interfere with the wire bundle and damage the wire bundle.

In the case of a small-diameter wire bundle having a diameter of 7 mm or less, when the edge of the slit is sent out in a non-guide state,
There was also a problem that the slit was displaced from the center of the wire bundle, making mounting difficult. This is because, in the case of a small-diameter wire bundle, the delivery distance in which the distal end of the corrugated tube is delivered in a non-guided state is relatively longer than that of a large-diameter wire bundle. It is because it becomes easy to come off. In order to solve such a problem, it is conceivable to extend the flange to the vicinity of the bottom portion. The opening amount also becomes relatively large, and the problem that the corrugated tube is easily detached from the flange cannot be avoided.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and improves the guide performance of a corrugated tube, thereby enabling a corrugated tube to be securely attached to a wire bundle without causing interference with the wire bundle. It is an object to provide a tube fitting.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a substantially U-shaped bottom portion for receiving a wire bundle to be mounted with a corrugated tube having a slit formed to be axially expandable. A pair of side walls that form a pair continuously with the bottom, and that divide the upper side along a line obliquely intersecting with the wire bundle guided by the bottom in parallel to each other, and are provided on the upper side of each of the side walls. A corrugated tube that has a flange that projects in a direction away from the side wall of the other party, and that feeds the corrugated tube to the wire bundle while guiding the corrugated tube with the flange, thereby expanding the slit and covering the corrugated tube with the wire bundle. In the mounting device, an auxiliary guide that extends from the bottom and receives a slit end of the corrugated tube that is sent out from the flange toward the wire bundle. It is provided a corrugated tube attachment according to claim.

[0009] In the invention including this specific matter, in the process in which the distal end of the corrugated tube reaches the wire bundle from the flange, the auxiliary guide feeds out the wire bundle while guiding the distal end of the corrugated tube. Therefore, the tip of the corrugated tube is guided until it is sent out from the flange and covers the wire bundle. In a preferred aspect, the auxiliary guide integrally includes a bottom plate portion extending along an extension of an upper side of the side wall portion, and a side plate portion extending on both sides of the bottom plate portion and covering a side portion of the wire bundle. Have.

[0010] In the invention including this specific matter, the tip of the slit of the corrugated tube is continuously delivered from the flange to the side plate of the auxiliary guide. In another preferred aspect, the auxiliary guide includes a cover portion for receiving an opening end of the corrugated tube fed from the flange. According to the invention including this specific matter, it is possible to reliably prevent interference between the wire bundle and the opening end of the corrugated tube.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A preferred embodiment of the present invention will be described in detail. FIG. 1 shows the appearance of a corrugated tube mounting device 10 according to an embodiment of the present invention, in which (A) is a perspective view of the corrugated tube mounting device 10 in a free state, and (B) is a corrugated tube in a used state. FIG. 2 is a perspective view of the mounting tool 10. FIG. 2 is a partial front view of the corrugated tube mounting device 10 in the embodiment of FIG.

Referring to these figures, a corrugated tube mounting device 10 shown in the drawing has a bottom portion 1 formed by bending a single resin plate formed in a substantially triangular developed shape into a U-shape.
1, a side wall portion 12 and a flange 14 are formed,
The corrugated tube 1 on which the slit S (see FIG. 2) that can be expanded in the axial direction is formed is sent out to the wire bundle W while being guided by the flange 14, so that the slit S is expanded and the corrugated tube 1 is moved to the wire bundle W. It is configured so as to cover. As the material of the corrugated tube mounting device 10, polyethylene (PE J340) is suitably adopted.

The bottom portion 11 is for receiving a wire bundle W of a wire assembly to which the corrugated tube 1 is to be mounted.
It is curved in the shape of a letter. The pair of side walls 12 are formed on the bottom 1
1, and extend in parallel with each other in a free state, as shown in FIG. Each side wall part 12 divides an upper side 13 along a line obliquely intersecting with the wire bundle W guided by the bottom part 11 in parallel with each other. The upper side 13 is formed with a flange 14 that bends at a right angle to the side wall portion 12 so as to project in a direction away from the other side wall portion 12.

An auxiliary guide 1 is provided on the bottom 11.
5 is extended. This auxiliary guide 15 receives the edge portion (slit tip portion) S1 (see FIG. 2) of the corrugated tube sent out from the flange 14 toward the wire bundle W (see FIG. 2), and a bottom plate portion 15A continuous with the bottom portion 11
And a side plate portion 15B connected to both sides of the bottom plate portion 15A to cover the side portion of the wire bundle W, and is formed in a U-shaped cross-sectional shape. In the specific example shown, the auxiliary guide 1
5 is bent from the bottom 11 and extends along the extension of the side wall 12. In the illustrated example, each side wall portion 12 has a hole 1 for a worker to put a finger on.
2A is formed.

Next, a state of use will be described with reference to FIGS. FIGS. 3 to 5 are perspective views illustrating the use state of the corrugated tube mounting tool 10 in the embodiment of FIG. First, referring to FIG. 3, when attaching the corrugated tube 1, the bottom portion 1 is previously attached to the wire bundle W.
1 and hold both side walls 12 with one hand so as to approach each other. At this time, it is preferable that the upper ends 13A of the upper sides 13 of the side walls contact each other.

Referring to FIG. 4, in this state, the worker inserts slit S of corrugated tube 1 into upper side 1 of side wall 12.
3 and the flange 14 is introduced inside. Further, by pushing the corrugated tube 1 in the direction indicated by the arrow A with the other hand, the opening end 1A of the corrugated tube 1 approaches the wire bundle W while the inner peripheral surface of the corrugated tube 1 is guided by the flange 14. Let it.

By proceeding with the above steps, the opening end portion 1A of the corrugated tube 1 is sequentially sent out toward the wire bundle W, and finally is sent out from the flange 14 to the outer peripheral surface of the wire bundle W. At this time, in the process of sending out, the edge portion S1 of the slit S of the corrugated tube 1
From the flange 14 to the two side plate portions 15B of the auxiliary guide 15.
The two side plate portions 15B guide the edge portion S1 of the slit S (in other words, guard the edge portion S1 of the slit S against the wire bundle W) (see FIG. 2).

Referring to FIG. 5, the front end of corrugated tube 1 sent out to wire bundle 1 is partially
At this point, the worker puts one hand on the side wall 1.
2 (right side in FIG. 5), and as shown by the arrow B, pull out the corrugated tube 1 with the other hand and attach it while pulling the corrugated tube attaching device 10 backward, thereby completing the attaching operation. Do. As a result, the corrugated tube 1 covering the wire bundle W is closed by its own elasticity to cover the wire bundle W by closing the slit S and mounted.

As described above, in the above embodiment, the slit edge S1 of the corrugated tube 1 is used.
Is guided by the auxiliary guide 15 until it is sent out from the flange 14 and covers the wire bundle W, so that the guide performance of the corrugated tube 1 is improved, so that the corrugated tube 1 can be securely inserted without causing interference with the wire bundle W. This has a remarkable effect that it can be attached to the wire bundle W.

In particular, in the illustrated example, the bottom plate 15A extends along an extension of the upper side 13 of the side wall 12, and extends on both sides of the bottom plate 15A to cover the side of the wire bundle W. Since the auxiliary guide 15 integrally having the side plate portion 15B is employed, the edge portion S1 of the slit S of the corrugated tube 1 is continuously transferred from the flange 14 to the side plate portion 15B of the auxiliary guide 15, so that the slit S There is an advantage that the interference between the edge portion S1 and the wire bundle W can be more reliably prevented, and the corrugated tube 1 can be put on the wire bundle W while the edge portion S1 of the slit S is guided in a desired direction.

The above embodiment is merely an example of a preferred specific example of the present invention, and the present invention is not limited to the above embodiment. FIG. 6 is a perspective view showing another embodiment of the present invention. As shown in FIG.
A cover 15C may be provided on one of the side plates 15B of the fifth unit 5, and the cover 15C may receive the front end 1A of the opening of the corrugated tube 1 sent out from the flange 14. A slit 15D is defined between the cover 15C and the other side plate 15B, and the wire bundle W can be inserted and removed from the slit 15D. This example is particularly suitable for attaching the corrugated tube 1 to a small-diameter wire bundle (having 2 to 5 wires).

In the embodiment shown in FIG. 6, the interference between the wire bundle W and the opening end portion 1A of the corrugated tube 1 can be reliably prevented.
There is an advantage that damage to the wire bundle W due to interference with the wire bundle W can be prevented. It goes without saying that various design changes are possible within the scope of the claims of the present invention.

[0023]

As described above, according to the present invention,
The tip of the corrugated tube is sent out from the flange to the wire bundle in a guided state, and is covered by the wire bundle.Therefore, the guiding performance of the corrugated tube is improved, so that it does not interfere with the wire bundle. This has a remarkable effect that the corrugated tube can be attached to the wire bundle.

In particular, an auxiliary guide is used which integrally includes a bottom plate extending along an extension of the upper side of the side wall, and side plates extending on both sides of the bottom plate and covering the side portions of the wire bundle. In this case, the slit end of the corrugated tube is continuously delivered from the flange to the side plate of the auxiliary guide, so that the interference between the slit end and the wire bundle is more reliably prevented, and the slit end is at the desired position. There is an advantage that the corrugated tube can be put on the wire bundle while being guided in the direction.

Further, when the auxiliary guide includes a covering portion, interference between the wire bundle and the opening end of the corrugated tube can be reliably prevented. There is an advantage that damage to the wire bundle due to the above can be prevented.

[Brief description of the drawings]

FIG. 1 shows the appearance of a corrugated tube mounting device according to an embodiment of the present invention, in which (A) is a perspective view of the corrugated tube mounting device in a free state, and (B) is a corrugated tube mounting device in a used state. It is a perspective view of a tool.

FIG. 2 is a partial front view of the corrugated tube mounting tool in the embodiment of FIG.

FIG. 3 is a perspective view illustrating a use state of the corrugated tube mounting tool in the embodiment of FIG.

FIG. 4 is a perspective view illustrating a use state of the corrugated tube mounting tool in the embodiment of FIG.

FIG. 5 is a perspective view illustrating a use state of the corrugated tube mounting tool in the embodiment of FIG.

FIG. 6 is a perspective view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Corrugated tube S Slit W Electric wire bundle 10 Corrugated tube mounting tool 11 Bottom part 12 Side wall part 13 Top side 14 Flange 15 Auxiliary guide 15A Bottom plate part 15B Side plate part 15C Cover part

Claims (3)

[Claims] 1. A substantially U-shaped bottom portion for receiving a bundle of wires to be mounted with a corrugated tube having a slit which can be expanded in the axial direction, and a pair continuously formed on the bottom portion, each being guided by the bottom portion. A pair of side walls partitioning upper sides along a line obliquely intersecting with the wire bundle in parallel with each other; and a flange provided on the upper side of each of the side walls and extending in a direction away from the other side wall. A corrugated tube mounting tool for guiding the corrugated tube to the wire bundle while guiding the corrugated tube with the flange, thereby expanding the slit and covering the corrugated tube with the wire bundle. A corrugated tube equipped with an auxiliary guide for receiving the slit tip of the corrugated tube sent out . 2. The corrugated tube mounting device according to claim 1, wherein the auxiliary guide extends along an extension of an upper side of the side wall portion, and extends on both sides of the bottom plate portion to form an electric wire bundle. A corrugated tube mounting device integrally having a side plate portion covering a side portion of the corrugated tube. 3. The corrugated tube mounting device according to claim 1, wherein the auxiliary guide includes a cover for receiving an opening end portion of the corrugated tube sent out from the flange.