JP2539539Y2 - Corrugated tube mounting jig - Google Patents

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 jig for protecting a wire or a bundle of wires used in an automobile or the like.

[0002]

2. Description of the Related Art A corrugated tube is made of a synthetic resin or the like into a wavy or bellows-like elongated material, and is also called a protective tube. The corrugated tube is attached so as to cover an electric wire bundle (including electric wires) and an internal electric wire bundle. Play a role in protecting A conventional mounting method of the corrugated tube will be described with reference to FIGS. The corrugated tube (hereinafter, also abbreviated as a tube) 1 has a slit-shaped split groove 5 on the bottom surface, and a support jig (which may be a wiring jig or a connecting jig) 3 is stretched linearly. In order to attach the wire bundle 2 to the wire bundle 2 (this wire bundle 2 is sometimes bundled with a bundling tool 6), first, bend the tube 1 and expand the right end of the tube 1 by hand, and then push the tube 1 from above, As shown in FIG. 9, the wire bundle 2 is put into the right end of the tube 1. The tube 1 closes with its own elasticity. Then, the tubes 1 are sequentially pressed from above in the longitudinal direction (indicated by the arrow X). At this time, the operator presses directly by hand or indirectly presses using the pressing jig 4. As a result of this pressing, the tube 1 having the split groove 5 open up to just before the center line 0-0 of the wire bundle 2 in FIG. 11 opens as the force is applied, and closes when exceeding the maximum opening, and finally closes completely in FIG. State. Also, the tube 1 in the portion where the opening of the split groove 5 is small in FIG. 12 expands to the maximum opening state in FIG. 11, and then closes as described above. Thus, the long tube 1 is finally attached to the wire bundle 2 over the entire length. The corrugated tube 1 is attached to the portion of the wire bundle 2 that needs to be protected in this way, and the corrugated tube 1 is wound around with a tape to cover the portion of the split groove, and is wired to an automobile body or the like.

[0003] Conventionally, various mounting jigs or working tools have been proposed in order to prevent the opening of the split groove when the corrugated tube is mounted on the bundle of electric wires (for example, Japanese Utility Model Application Laid-Open No. 56-152015; See JP-A-62-188924). This is a guide part that receives the wire bundle and the corrugated tube so as to intersect at an obtuse angle, and feeds the wire bundle concentrically so that the wire bundle is in the middle, and a fin or a fin or A guide member intersecting jig having a wedge-shaped enlarged portion is provided. When such a jig is used, the corrugated tube can be easily attached to the bundle of electric wires without the trouble of manually expanding the split groove.

[0004]

However, these conventional mounting methods or mounting jigs have the following problems.

In other words, the former (the pressing method shown in FIGS. 9 to 12) is capable of mounting a tube at any desired position and length on a wiring jig (joining shaft or support jig). Despite the advantages, the pressing force in the longitudinal part of the mounting area (whether the pressing force is direct or indirect through a jig is the same ), It is difficult to apply a constant force over the entire length, so that the worker has to pay attention to the method of applying the force and the workability is not good. Was.

In the latter method using a guide member crossing type jig, a corrugated tube and a bundle of electric wires must be supplied at the same time when the mounting operation is started, and the operation must be completed at the same time. However, there is a problem in that the tube cannot be attached to a wire bundle stretched in advance and the degree of freedom in attaching the tube is not good.

Therefore, the present invention provides a jig for mounting a corrugated tube, which secures the degree of freedom of mounting the corrugated tube and improves the workability of mounting.
It is intended to solve the above problems.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a U-shaped main body having an open top and a U-shaped cross section provided with an inner surface for guiding electric wires and an outer surface for guiding a corrugated tube. The handle comprises a rod-shaped handle extending therefrom, and a plate-like guide provided integrally with the handle so as to protrude left and right with an interval allowing the bottom of the main body and the split groove of the corrugated tube to be inserted therethrough.

[0009]

The U-shaped main body of the mounting jig is lifted from below the wire bundle at the tube mounting start position on the support shaft, and the wire bundle at that position is inserted into the U-shaped inner surface. Next, the groove at the mounting start end of the tube is widened by hand or the like, and the outer surface of the tube is covered with the U-shaped body so that the groove is closed. In this state, when the handle of the mounting jig is grasped by hand and advanced toward the other end in the tube longitudinal direction, the split groove of the tube is expanded by the U-shaped outer surface of the jig main body, and the bundle of wires is formed by the inner surface. Is guided, and the downward movement of the tube is suppressed by the guide, and the split grooves are expanded at each point of the progress of the mounting jig, and the split grooves are closed one after another at the present position where the mounting jig exists, and finally, Will be mounted so that the tube is covered over the entire length of the wire bundle.

The expansion of the tube split groove is performed on the U-shaped outer surface of the jig body by the hand with the jig, and the outer surface is the same in the longitudinal direction and does not change. In addition, since the traveling force and direction can be freely adjusted, the traveling operation can be facilitated, so that the workability can be improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. First, the configuration will be described with reference to FIG. 1 is a corrugated tube (also referred to as a tube as described above),
2 is a bundle of electric wires, which are conventional. The mounting jig 10 is made of a metal material such as iron or copper alloy, and has a curved body-shaped main body 11 having a U-shaped cross section, a rod-shaped handle 12, and a horizontal plate-shaped guide 13. The main body 11 has a shallow depth toward the rear end (the direction opposite to the traveling direction X), and connects the upper edge 14 from the front end to the rear end with a large R, where the jig 10 is in progress. The inner surface of the tube 1 is smoothly contacted so that the force is not concentrated at one point. A plate-like member 15 made of a rubber material or the like having a high friction coefficient is bonded symmetrically to the distal end of the lower curved surface portion of the outer surface of the main body 11. A bar-shaped handle 12 having a rectangular cross section and extending downward (extending in a direction perpendicular to the main body) is integrally provided at the tip of the bottom portion 16 of the main body 11. Also, at a certain distance from the bottom 16 of the main body 11 (a value slightly larger than the wall thickness of the tube 1), a space is provided perpendicular to the handle 12, that is, at a space where the corrugated tube 1 can be inserted into the contact surface of the bottom 16. A horizontal plate-like guide 13 is integrally provided so as to protrude left and right in parallel.

As shown in FIG. 2, the width B, the height H and the thickness T of the U-shaped cross section of the front portion of the main body 11 can be inserted into the annular gap between the tube 1 and the wire bundle 2. The handle 12 may have an appropriate size, and the length of the handle 12 may be an appropriate size in relation to a jig stand (support stand).

Next, the operation of the above embodiment will be described with reference to FIGS.

As shown in FIG. 6, when attaching the corrugated tube 1 to the wire bundle 2 stretched between the wiring jigs 3 on the support base 17, the handle 12 of the jig 10 is held by hand. So that it can be covered from below the wire bundle 2. In this case, the deep front end of the U-shaped cross section of the main body 11 is directed in the traveling direction (arrow X), and the cross section of the wire bundle 2 is accommodated therein.

Next, as shown in FIG. 7, the corrugated tube 1 is bent and its left end is covered from above the storage portion. In such a case, the split groove 5 of the tube 1 is expanded. If the left end side of the split groove 5 is made wide in advance, the initial work becomes easier. In this state, as shown in FIG. 2, at the left end of the tube 1, the main body 11 of the jig is fitted in the cross-sectional gap between the tube 1 and the wire bundle 2.
In front of this, as shown in FIG. 4, the split groove 5 of the tube 1 is widened, and the wire bundle 2
Are cross projecting, and further forward is a state in which the split groove 5 is closed as shown in FIG.

Next, holding the mounting jig 10 by hand, the wire bundle 2
When the lower end of the guide is advanced in the X direction by the guide, the jig 10 operates in the same manner as the fastener, so that the tube 1 can be attached to the wire bundle 2. That is, as the jig advances, the one shown in FIG. 5 expands to the state shown in FIG. 4, and the split groove 5 of the tube 1 is further expanded from the state shown in FIG. As shown, the guide 13 and the U
The lower part of the outer surface of the cross section narrows, whereby the tube 1 is attached to it so as to envelop the wire bundle 2. In that case, the downward displacement of the tube 1 is prevented by the guide 13.

When the mounting jig 10 is inadvertently pulled downward, as shown in FIG. 3, a downward pulling force is applied between the tube 1 and the main body 11 as a vertical pressure P. The frictional force F in the tangential direction acts in accordance with P, and the frictional force F is adhered to the lower surface of the plate-like member 15 having a high friction coefficient.
Therefore, careless dropout is prevented.

While the mounting jig 10 is in progress, the upper edge 14 of the main body 11 slides on the inner surface of the tube 1.
Since the front edge and the lower portion at the rear of the edge 14 are connected by an arc R, the entire edge is slid.
Concentration of power at one location is prevented.

As described above, in this embodiment, the mounting jig 1
Since the tube 1 is attached to the wire bundle 2 by moving the tube 0 by hand, fine adjustments such as how to apply a force or how to regulate or take the traveling direction can be made freely. The work can be performed reliably and satisfactorily, and the workability is much better than the conventional pressing method without a jig.

By changing the position of the handle 12 of the mounting jig 10 in the circumferential direction, the mounting direction of the tube 1 can be changed. Is to increase.

Further, the mounting jig according to this embodiment has the following advantages as compared with the conventional guide member crossing jig.

(A) The work can be performed with the wire bundle held in a straight line, so that the work on the connecting jig can be performed.
In the conventional case, since it is necessary to bend the wire bundle, work on the connecting jig cannot be performed.

(B) The mounting jig can be freely pulled out during the operation, and the interruption of the operation is free. Therefore, if the installation can be performed by pressing, the operation can be immediately changed to the operation. In the conventional case, the work cannot be completed and interrupted until the wire bundle reaches the terminal.

(C) Basically, the mounting operation can be performed from any position and has a degree of freedom. In the conventional case, the operation is limited to be started from the entrance of the corrugated tube and the bundle of electric wires, and there is no flexibility.

[0025]

As described above, according to the present invention, it is possible to secure the degree of freedom in mounting the corrugated tube and to improve the workability of mounting on the wire bundle. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view showing an operation of a main part of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a sectional view taken along line VV of FIG. 1;

FIG. 6 is a side view showing a working process of this embodiment and showing a state before mounting.

FIG. 7 is a side view showing an initial state of attachment.

FIG. 8 is a side view showing the attachment completed state.

FIG. 9 is a perspective view showing a conventional mounting method.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

FIG. 11 is a sectional view taken along line XI-XI in FIG. 9;

FIG. 12 is a sectional view taken along line XII-XI in FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Corrugated tube 2 Wire bundle 3 Supporting jig 4 Pressing jig 5 Split groove 6 Bundling jig 10 Mounting jig 11 Main body 12 Handle 13 Guide

Claims (1)

(57) [Scope of request for utility model registration] 1. An upper open U-shaped main body having an inner surface for guiding electric wires and an outer surface for guiding a corrugated tube, a rod-shaped handle extending downward from the bottom of the main body, and a bottom portion of the main body attached to the handle. A jig for mounting a corrugated tube, comprising: a plate-shaped guide which is provided so as to protrude left and right integrally with an interval allowing insertion of the split groove portion of the corrugated tube.