JP2008148444A - Protector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the manufacturing cost of a protector to be used when an electric wire like a wiring harness is installed on a door of a vehicle or the other moving part. <P>SOLUTION: The protector 1 has a main body 4 on which a plurality of springs 3 are joined with one another in a shape of a trapezoidal wave, and the main body 4 is provided on each of both sides with a tape wrapping portion 2. Each of the joints between the spring portions 3 is provided with an electric wire holding portion 5. The electric wire holding portions 5 have U-shaped sections alternately open in opposite directions. As a result, the protector 1 exhibits its own stretching property and thus it is unnecessary to prepare the other protector 1 even though the length of an electric wire 6 is changed. Therefore, any difference in vehicle or part number can be coped by one type of the protector 1, and the manufacturing cost of the protector 1 is reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a protector used when wiring an electric wire such as a wire harness to a movable part such as a door, a trunk lid or the like of a vehicle.

Conventionally, in this type of protector, a technique has been proposed in which an arc portion that expands and contracts while twisting is provided to follow the movement of the movable part (see, for example, Patent Document 1).
JP 10-1000 A (column [0028] column, FIG. 2)

  However, in this case, when the length of the electric wire is changed due to a difference in vehicle or product number, a separate protector must be prepared each time. As a result, there is a problem that the manufacturing cost of the protector inevitably increases.

  In view of such circumstances, an object of the present invention is to provide a protector capable of solving such problems.

First, in the protector invention according to claim 1, a main body having a plurality of spring portions connected in a wave shape is provided, a tape winding portion is provided on both sides of the main body, and an electric wire pressing portion is provided at a connecting portion of the spring portions. Is provided.
The invention of the protector according to claim 2 is characterized in that the main body has a trapezoidal wave shape.
Further, in the protector invention according to claim 3, there are a plurality of the wire pressing portions, and each has a U-shaped cross section that opens alternately in the opposite direction.

  According to the present invention, since the protector itself exhibits stretchability, it is not necessary to prepare a separate protector even if the length of the electric wire is changed. Therefore, it is possible to deal with differences in vehicles, product numbers, etc. with one type of protector, and it is possible to reduce the manufacturing cost of the protector.

  Further, since the protector itself is elastic, no rattling occurs when an electric wire is attached to the vehicle, and the protector can be prevented from being damaged due to vibration accompanying the traveling of the vehicle.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a perspective view showing a first embodiment of a protector according to the present invention, and FIG. 2 is a perspective view showing a state in which the protector shown in FIG. 1 is extended.

  The protector 1 is an integrally molded product made of a synthetic resin such as polypropylene or polyethylene, and has a main body 4 in which five spring portions 3 are connected in a trapezoidal wave shape as shown in FIG. Tape winding portions 2 are formed on both sides of the main body 4. In addition, electric wire pressing portions 5 (5A, 5B, 5C, and 5D) are respectively formed at the four connecting portions of the spring portion 3, and these electric wire pressing portions 5 are alternately cross-sectionally opened in the left and right directions. It is a letter shape. That is, the wire pressing portion 5A is opened rightward, the wire pressing portion 5B is opened leftward, the wire holding portion 5C is opened rightward, and the wire holding portion 5D is opened leftward. And if the protector 1 is pulled in the direction (arrow P, Q direction) which connects the two tape winding parts 2, as shown in FIG. 2, the protector 1 will extend | stretch elastically in the same direction. Conversely, when the protector 1 is compressed in the direction connecting the two tape winding portions 2 (arrow P and Q directions), the protector 1 is elastically contracted in the same direction.

  Since the protector 1 has the above-described configuration, the following procedure is used when wiring an electric wire such as a wire harness to a vehicle door, a trunk lid, or other movable parts.

  First, as shown in FIG. 1, the electric wire 6 is hooked on the electric wire holding portion 5 of the protector 1, and both ends of the electric wire 6 are fixed to the tape winding portion 2 of the protector 1 with tape (not shown). The protector 1 is attached to the electric wire 6.

  Next, the electric wire 6 is attached to the movable part of the vehicle together with the protector 1. Then, the electric wire 6 is attached in the form where the protector 1 expands and contracts according to the dimension of the electric wire attachment part.

  Here, the wiring work of the electric wire 6 is completed.

  Thus, since protector 1 itself expresses elasticity, even if the length of electric wire 6 is changed, it is not necessary to prepare separate protector 1. Therefore, it is possible to deal with differences in vehicles, product numbers, and the like with one type of protector 1, and the manufacturing cost of the protector 1 can be reduced.

  In addition, since the protector 1 itself has elasticity, rattling does not occur when the electric wire 6 is attached to the vehicle, and the protector 1 can be prevented from being damaged due to vibration associated with traveling of the vehicle.

  Further, as shown in FIG. 1 and FIG. 2, the electric wire 6 is held by the electric wire pressing portion 5 of the protector 1, so that there is no fear that the electric wire 6 is stretched or loosened even if the protector 1 is expanded or contracted. And since these electric wire holding | suppressing parts 5 are alternately opened in the left-right reverse direction, even if the protector 1 expands and contracts, there exists an advantage that the electric wire 6 does not come off easily.

  In addition, since the main body 4 has a trapezoidal wave shape, in addition to fulfilling the main purpose of increasing the difference between the total length when the protector 1 is attached without being pulled and the total length when the protector 1 is pulled and attached. Unlike the conventional coil spring shape described above, there is an advantage that it can be easily attached to a flat panel (not shown) of a vehicle even if the surrounding space is narrow.

<Other embodiments>
In the above-described embodiment, the main body 4 to which the five spring portions 3 are connected has been described. However, the number of the spring portions 3 is not limited to five, and may be plural (two or more). Any number is acceptable.

  In the above-described embodiment, the main body 4 in which the spring portion 3 is connected in a trapezoidal wave shape has been described. However, the shape of the main body 4 is not limited to the trapezoidal wave shape, and is composed of continuous irregularities (mountains and valleys). Other shapes (for example, a triangular wave shape, a sawtooth wave shape, a sine wave shape, etc.) can be adopted as long as the wave shape is obtained.

  In the above-described embodiment, the protector 1 made of synthetic resin has been described. However, the material of the protector 1 is not limited to synthetic resin.

  The present invention can be widely applied to various industrial fields such as automobiles, airplanes, trains, manufacturing plants, electrical appliances, and OA equipment.

It is a perspective view showing a 1st embodiment of a protector concerning the present invention. It is a perspective view which shows the state which the protector shown in FIG. 1 extended | stretched.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Protector 2 ... Tape winding part 3 ... Spring part 4 ... Body 5 ... Electric wire holding part 6 ... Electric wire

Claims (3)

A plurality of spring portions connected to each other in a wavy shape;
Tape winding portions are provided on both sides of the main body,
A protector, wherein a wire pressing portion is provided at a connecting portion of the spring portion.   The protector according to claim 1, wherein the main body has a trapezoidal wave shape.   The protector according to claim 1 or 2, wherein there are a plurality of the wire pressing portions, and each has a U-shaped cross section that opens alternately in the opposite direction.

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