JPH11205942A - Protector for wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent cracking in a cable damage preventive mechanism. SOLUTION: In a protector P for a wire harness constituted of the trough- shaped main body 14 and a cover 16 which closes and opens the main body 14, flexible cable damage preventive plates 18 whose top ends are brought into contact with an inner wall face of a side wall 14c of the main body 14 of the protector are installed on an inner wall face near the end of the cover 16. These cable damage preventive plates 18 can be installed near a locking mechanism of the protector P. At the top end of the side wall 14c of the main body 14 of the protector, a cable damage preventive plate guiding face 19 can be installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness protector for housing a wire harness therein.

[0002]

2. Description of the Related Art A wire harness protector provided with a wire harness preventing mechanism is disclosed in Japanese Utility Model Laid-Open No. 2-79116 and Japanese Utility Model Laid-Open No. 3-1111.
There is a technique described in JP-A-21. 2-791
As shown in the perspective view of FIG. 5, the protector for a wire harness described in Japanese Patent Application Publication No. 16 is formed in a gutter shape by side walls 1b and 1c rising from both ends of a bottom wall 1a, and accommodates the wire harness therein. A cover 3 that is connected to the main body 1 via a thin hinge 2 provided at a distal end portion of one of the side walls 1b to open and close an upper opening of the protector main body 1, and a lock mechanism 4 that holds the cover 3 in a closed state.
And wire pushing members 5 arranged on both sides of the lock mechanism 4.

The lock mechanism 4 comprises a projection 6 provided on the outer wall surface of the side wall 1c and a lock piece 4a erected at the end of the inner wall surface of the cover 3. The lock piece 4a has a lock hole 4b. Is provided. The projection 6 has an inclined surface 6a with which the lock piece 4a abuts when the cover 3 is rotated to the closed state, and a lock member 4a which is engaged with the lock piece 4a at a position passing through the lock hole 4b when the cover 3 is closed. A stop surface 6b is provided. A lock holding piece 7 is provided on the inner wall surface of the cover 3 at an interval corresponding to the thickness of the side wall 1c between the lock piece 4a and the lock piece 4a.

The electric wire pushing member 5 is for preventing a part of the electric wire of the wire harness from entering a gap between the lock piece 4a and the lock holding piece 7, and the electric wire pushing member 5 is used to connect the electric wire of the wire harness to the protector main body 1. And a reinforcing piece 5b for reinforcing the wire pushing piece 5a. The side wall 1c is provided with a cutout 8 for avoiding interference with the wire pushing piece 5a. When the cover 3 is closed, an electric wire which may be caught between the cover 3 and the side wall 1c is pushed into the inside of the protector main body 1 by the electric wire pushing piece 5a, so that the efficiency of the work of inserting the wire harness is improved.

A protector for a wire harness disclosed in Japanese Utility Model Laid-Open Publication No. 3-111121 and provided with a wire jam prevention mechanism has a hinge 2 on one side wall 1b of the protector body 1 as shown in a perspective view of FIG. The cover 9 is connected via the. Low side walls 9b.
9c is provided, and when the cover 9 is closed, the side walls 9b,
The end face 9c overlaps the tip end faces of the side walls 1b and 1c of the protector body 1.

On the outer wall surface of the side wall 9c of the cover 9, a flexible engagement arm 10 having an engagement protrusion 10a at the tip is provided. On the outer wall surface of the side wall 1c of the protector body 1, the engagement protrusion 10a A lock piece 11 having a lock hole 11a with which the lock piece 11 is engaged is provided. When the cover 9 is closed by the engagement arm 10 and the lock piece 11, a lock mechanism that holds the cover 9 in a closed state is configured.

[0007] The electric wire jamming prevention mechanism includes an electric wire extrusion prevention plate 12 made of a flexible thin plate protruding above the side wall 1c from the inner wall surface of the side wall 1c, and a bending driving piece 13 provided inside the side wall 1b. A guide surface 13a is formed on the surface of the bending drive piece 13 so as to bend and deform the electric wire protrusion prevention plate 12. Open the cover 9 and place the wire harness W inside the gutter-shaped protector body 1.
When the wire (see FIG. 7) is inserted, the wire protruding prevention plate 12 is higher than the wire harness W, so that the wire does not protrude from the side wall 1c.

When the cover 9 is closed, the leading end of the wire protruding prevention plate 12 is bent, and the guide surface 13a of the driving piece 13 is bent.
(See FIG. 7). When the cover 9 is further closed, the wire protruding prevention plate 12 is elastically deformed in the direction in which the wire harness W is wrapped while the wire protruding prevention plate 12 slides and comes into contact with the guide surface 13a, so that the wire protruding. It is surely prevented. When the cover 9 is completely closed, the engagement projection 10a penetrating the lock hole 11a engages with the lock piece 11 (see FIG. 8).

[0009]

The protector shown in FIG. 5 has the following problems. (1) When the cover 3 is closed, the wire pushing member 5 pushes down the wire harness. Therefore, when the cover 3 is closed, this pushing-down force is required, and a large closing force must be applied. (2) Since the mechanism for preventing the wire from being caught provided on the back surface of the cover 3 has a complicated structure, the mold for integrally molding the protector is complicated, and the manufacturing cost is high. (3) Even if the cover 3 is closed, there is a gap between the notch 8 of the side wall 1c and the wire pushing member 5, and dust or the like enters through this gap.

The protector shown in FIGS. 6 to 8 has an advantage that the structure is simple because the wire entrainment prevention mechanism is constituted by the electric wire protruding prevention plate 12 and the bending drive piece 13, and when the cover 9 is closed. Prevention plate 12
Only bends and deforms in the direction of wrapping the wires of the wire harness W, and does not push the wires downward.
The cover 9 has an advantage that a large closing force is not required, but has the following problems.

When the cover 9 is completely closed, the wire protruding prevention plate 12 is greatly bent and deformed, so that there is a risk of cracking. When cracking occurs, the end of the broken surface becomes sharp and the wire is broken. There is a problem in that the safety of the wire harness and the safety management of the worker remain because the accident occurs and the worker is injured. An object of the present invention is to provide a durable protector which has a simple structure, can close the cover with a small force, and does not crack.

[0012]

In order to achieve the above object, the present invention provides a wire having a protector body formed in a gutter shape and accommodating a wire harness therein, and a cover capable of opening and closing the protector body. In the protector for a harness, a flexible wire biting prevention plate having a tip contacting an inner surface of a side wall of the protector body is provided on an inner surface near an end of the cover.

[0013] The wire entrapment preventing plate may be provided near a lock mechanism for locking the protector body and the cover in a closed state. The side wall of the protector main body may be provided with an electric wire biting prevention plate guide surface which is inclined from a tip of the side wall toward an inner wall surface of the side wall.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a wire harness protector P provided with an electric wire jam prevention mechanism. Side walls 1 at both ends of bottom wall 14a
4b and 14c are erected and formed in a gutter shape.
The cover 16 is integrally connected to the distal end of b through the hinge 15 as in the conventional example.

The lock mechanism 17 comprises a lock piece 11 provided at the upper end of the outer wall surface of the side wall 14c and an engagement arm 10 provided at the free end of the cover 16, as in the conventional example shown in FIG. When the cover 16 is closed (see FIG. 2), the engagement protrusion 10a of the engagement arm 10 engages with the lock piece 11 when passing through the lock hole 11a.

The wire jam prevention mechanism of the present invention is only the wire jam prevention plate 18 provided on the inner wall surface of the cover 16, and the structure is extremely simple. The shape of the wire biting prevention plate 18 is a plate shape, has flexibility, and has a cover 1.
6 are provided near both ends of the engagement arm 10 so as to prevent the electric wire of the wire harness W from jumping out to a position where the lock operation of the lock mechanism 17 is obstructed. The feature of the electric wire biting prevention plate 18 is that the tip is inclined in a direction of contacting the inner wall surface of the side wall 14c with a small contact pressure when the cover 16 is closed.

In the process of closing the cover 16, the tip of the side wall 14c is prevented in order to prevent the tip of the wire jamming prevention plate 18 from hitting the tip of the side wall 14c and not being smoothly inserted into the inner wall surface of the side wall 14c. In the part, wire jamming prevention plate 1
It is preferable to provide an electric wire biting prevention plate guide surface 19 for guiding the insertion of the wire 8. As shown in FIGS. 2 to 4, the wire entrapment prevention plate guide surface 19 is an inclined surface that is inclined from the tip of the side wall 14 c toward the inner wall surface of the side wall 14 c. The guide is inserted into the inner wall surface of the side wall 14c while sliding on the guide surface 19 of the anti-biting plate.

Next, the operation of inserting the wire harness W by the wire harness protector P configured as described above will be described. Open the cover 16 and protector body 1
When the inside of the 4 inserts the wire harness W, can cause some of the wire W ₁ of the wire harness W approaches the upper end of the side wall 14c, there is a risk that protrude from the side wall 14c (see FIG. 2).

When the cover 16 is closed in this state,
Since the leading end of the wire biting prevention plate 18 abuts on the wire biting prevention plate guide surface 19 and slides on the wire biting prevention plate guide surface 19, the wire biting prevention plate 18 is slightly elastically deformed. The wire entrapment prevention plate 18 does not compress the wire harness W downward, and the tip thereof slides from the wire entrapment prevention plate guide surface 19 to the inner wall surface of the side wall 14c, and the side wall 14c and a part of the electric wire. It is intended to be inserted into the gap between the W _1, preventing plate 1 bite wire
8, the insertion resistance of the cover 16 is extremely small as compared with the conventional pressing force for pressing the wire harness W downward.
Can be closed with a small force.

When the cover 16 is closed, the engagement arm 1
After the 0 engagement projection 10a passes through the lock hole 11a, it engages with the lock piece 11. After the cover 16 is closed, the wire jamming prevention plate 18 is in contact with the inner surface of the side wall 14c in a state of being slightly elastically deformed and deformed, but it is assumed that the plate 18 bends and deforms so as to cover the wire harness W as in the conventional example. The amount of elastic deflection deformation is small as compared with that, and therefore, there is no permanent deformation or cracking.

[0021]

Since the present invention is configured as described above, it has the following effects. (1) Since the wire biting prevention plate moves while contacting the inner surface of the side wall of the protector body when the cover is closed, there is no possibility that the wire bites into the protector. (2) The wire harness prevention plate is inserted between the inner surface of the side wall of the protector body and the wire harness instead of pressing the wire harness downward, so the closing force of the cover is reduced and the work of inserting the wire harness Improved. (3) Since the wire jamming prevention plate has a small amount of bending deformation,
There was no permanent deformation or cracking, and the durability of the protector was improved. (4) Since the wire jamming prevention mechanism is only a plate-shaped wire jamming prevention plate, the entire structure of the protector is simplified, and the manufacturing cost of the mold for manufacturing the protector is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a wire harness protector of the present invention.

FIG. 2 is a sectional view of the protector in which a wire harness is inserted.

FIG. 3 is an explanatory diagram of an operation of an electric wire biting prevention plate when a cover is closed.

FIG. 4 is an explanatory view of the operation of the electric wire biting prevention plate when the cover is further closed.

FIG. 5 is a perspective view showing a conventional example of a protector having an electric wire jam prevention mechanism.

FIG. 6 is a perspective view showing another conventional example of a protector having an electric wire jam prevention mechanism.

FIG. 7 is a cross-sectional view showing a state where the cover of the protector of FIG. 6 is closed.

8 is a cross-sectional view showing a state where the cover of the protector of FIG. 7 is further closed.

[Explanation of symbols]

 P Protector W Wire harness 10 Engagement arm 11 Lock piece 14 Protector body 14b, 14c Side wall 16 Cover 17 Lock mechanism 18 Wire jamming prevention plate 19 Wire jamming prevention plate guide surface

Claims (3)

[Claims] 1. A wire harness protector comprising a protector body formed in a gutter shape and accommodating a wire harness therein, and a cover capable of opening and closing the protector body, wherein a tip is provided on an inner surface near an end of the cover. A wire harness protector provided with a flexible electric wire biting prevention plate that comes into contact with the inner surface of the side wall of the protector body. 2. The wire harness protector according to claim 1, wherein the wire biting prevention plate is provided near a lock mechanism that locks the protector body and the cover in a closed state. 3. The wire according to claim 1, wherein the side wall of the protector body is provided with a guide surface of an electric wire biting prevention plate inclined from a tip of the side wall toward an inner wall surface of the side wall. Harness protector.