JPH0847136A - Harness wire protector - Google Patents

Abstract

PURPOSE:To properly protect harness wires and prevent them from coming off due to vibration by axially fitting the holes made in the rear part of a second shell member onto the projections formed on the front part of a first shell member, and forming one corners of the front end of each shell member into an arc shape. CONSTITUTION:A plurality of shell members 10, having a C-shaped cross section and having a harness wire 11 housing space 1 formed therein, are connected with one another. The front part 2 and, rear part 3 of each of the shell members 10 are formed in one piece. The projections 4 formed on the outside surface of the front part 2 of one shell member 10, is axially fit into the holes 5 formed on the inside surface of the rear part 3 of the next shell member 10. The corners on one side of the front end of each shell member are formed into an arc shape with its projections 4 at the center. When connected with one another, those shell members are so arranged that the arc corners are consecutively positioned on the same side. A set of the shell members is attached in such a manner that the arc corners are positioned on the side to which harness wires 11 therein, when exposed to mechanical displacement, will be bent. Thus the harness wires are properly protected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used to protect a harness wire in which electric wires and other linear objects are bundled. The present invention was developed for use as an automobile part, but can also be used for other than automobile parts.

The present invention is used to protect a harness wire arranged at a position where its position is mechanically displaced under normal use. The present invention is a protector having a structure in which a plurality of shells are connected in a chain shape along a harness wire, and can be bent only in one direction when the accommodated harness wire is used as an axis, but in other directions. The present invention relates to a device configured not to bend.

[0003]

2. Description of the Related Art FIG. 7 is a perspective view showing the outer shape of a shell member constituting a conventional harness wire protector.
This device has a structure in which a plurality of shell members 20 formed of a hard material, having a C-shaped cross section, and having a space 21 for accommodating a harness wire formed therein are connected. The shell member 20 is integrally formed with a front portion 22 having a wide outer width and a rear portion 23 having a narrow outer width along the accommodated harness wire, and the front portion 22 of one shell member 20 is arranged next to that of the next shell member 20. The fish-shaped convex portion 24 provided inside the front portion 22 of the shell member 20 positioned next to the long hole portion 25 provided in the rear portion 23 of the shell member 20 within a predetermined angle range It is loosely fitted to rotate inside. The front end surface of the shell member 20 and the rear end surface corresponding to the front end surface of the next-positioned shell member 20 are formed in an arc shape so as to be rotatable.

The harness wire protector having such a structure is extremely convenient for restricting the moving position of the accommodated harness wire when the position of the harness wire is mechanically displaced in the normal use state. And
Widely used as automobile parts.

[0005]

When the harness wire protector of this structure is constructed so that there is almost no gap between the shell members, the harness wire protector is considered at least in the axial direction of the accommodated harness wire, and at least FIG. 2 as shown in
Bend in the direction. The inventor has utilized such a harness wire protector for protecting a wire that supplies an electric current to a heating wire of an automobile window glass. This window glass is moved up and down by an electric lifting device.

By using the above-mentioned conventional harness wire protector, the harness wire is regulated so that it is always in a plane parallel to the window glass. However, since the conventional harness wire protector is bent in two directions as described above, there is a large range of movement in the plane above and below the window glass, and other parts are arranged in the range of movement. It was found that there are large design constraints such as the inability to do so.

The present invention has been made against such a background, and an object of the present invention is to provide a harness wire protector which bends in only one direction around the axis of the harness wire accommodated in one plane. . SUMMARY OF THE INVENTION It is an object of the present invention to provide a device that protects a harness wire that is displaced in a normal use state by appropriately controlling its moving position and prevents the harness wire from falling off due to vibration or the like.

[0008]

SUMMARY OF THE INVENTION In order to protect a harness wire in which electric wires and other linear objects are bundled, the present invention limits the bending direction to one direction within one plane. A harness wire protector configured by connecting a plurality of shell members, each having a C-shaped cross section and having a space for accommodating a harness wire formed therein, wherein the shell member extends along the harness wire to be accommodated. A front part with a narrow outer width and a rear part with a wide outer width are integrally molded, and the front part of one shell member is incorporated into the rear part of the next shell member, and the convex part provided outside the front part of one shell member. Is a structure in which the recess or hole provided inside the rear part of the next shell member is axially fitted at a position where the front end face of one shell member front part and the rear end part of the next shell member are substantially in contact with each other, One corner of the front end face is inside the convex Characterized in that it is formed in an arc shape to be.

The opening having the C-shaped cross section is formed so narrow that one electric wire of the accommodated harness wire can pass therethrough, and one of the corners formed in the arc shape has the C shape.
It is desirable that it is a corner portion on the opening side of the letter-shaped cross section.

[0010]

A shell member having a C-shaped cross section and a space for accommodating the harness wire therein is formed of a hard material, and the shell members are connected to each other. The shell member is integrally formed with a front portion having a narrow outer width and a rear portion having a wide outer width along the accommodated harness wire. Further, a convex portion is provided on the outer side of the front portion, and a concave portion (or a hole portion) is provided on the inner side of the rear portion. One angle of the front end face is formed in an arc shape with the convex portion as the center. Arrange arc-shaped corners so as to be continuous. When the convex portion on the outer side of the front portion of the shell member located next to the concave portion (or hole) on the inner side of the rear portion is axially fitted, the rear end face and the front end face are connected to each other at a position where they substantially abut. By thus arranging the arc-shaped corners so as to be continuous, the bending direction can be limited to one direction in which the arc-shaped corners face inward.

Further, the width of the opening having the C-shaped cross section is formed so that one of the plurality of harness wires to be accommodated passes therethrough, and this opening has an arc-shaped corner side. The harness wire is prevented from protruding when bent or subjected to vibration.

As described above, since the bending direction is limited to one direction, the range of movement of the harness wire can be narrowed and the locus accompanying the movement can be made constant.
Therefore, the degree of freedom in setting the arrangement positions of other components increases. Further, since the shake caused by the vibration is reduced and the shake in the multiple directions is eliminated, the harness wire can be appropriately protected and the possibility of the drop can be reduced.

[0013]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a perspective view showing an outer shape of a shell member constituting a harness wire protector according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a connected state of the shell member according to the embodiment of the present invention.

In the embodiment of the present invention, a plurality of shell members 10 which are made of a hard plastic material and have a C-shaped cross section and in which a space 1 for accommodating a harness wire 11 is formed are connected as shown in FIG. Is configured.

The shell member 10 is integrally molded with a front portion 2 having a narrow outer width and a rear portion 3 having a wide outer width along the accommodated harness wire 11, and the front portion 2 of one shell member 10 is One shell member 10 is installed in the rear part 3 of the shell member 10.
The projection 4 provided on the outer side of the front portion 2 has a hole (or recess) 5 provided on the inner side of the rear portion 3 of the next shell member 10 and the front end surface of the front portion 2 of the one shell member 10 and the next shell. The rear end of the member is axially fitted at a position where the rear end surface of the member substantially contacts, and one corner of the front end surface is formed in an arc shape with the convex portion 4 as the center.

The opening 6 having the C-shaped cross section is formed so narrow that one electric wire of the harness wire 11 to be accommodated passes therethrough, and one corner portion formed in the arc shape is
It is formed so as to be on the side of the opening 6 having the C-shaped cross section.

To connect the shell members 10, the rear portion 3 of one shell member 10 is opened to both sides using a tool or the like, and the front portion 2 of the next shell member 10 is inserted into the open space. ,
The tool is removed from the rear part 3 at a position where the hole 5 and the convex part 4 coincide with each other. As a result, the rear portion 3 returns from the opened state to the original shape, and the convex portion 4 is axially fitted into the hole portion 5 and fitted therein. In this way, the shell members 10 corresponding to the required length are connected.

At the time of this connection, the corners formed in an arc shape are arranged so as to continuously appear on one side as shown in FIG. 2, and the side where the harness wire 11 bends when subjected to mechanical displacement. Attach so that the arc-shaped corners are located on the. The harness wire 11 is housed in a protector in which the shell member 10 is connected to a predetermined length.
Gives a mechanical displacement to the left side or the right side (or an upper side or a lower side), the shell member 10 receives the mechanical displacement and tries to rotate around the convex portion 4 axially fitted in the hole portion 5. To do. Since one corner portion of the front portion 2 of the shell member 10 is formed in an arc shape, each shell member 10 has a corner portion of the next shell member 10 abutting on the rear end surface of the shell member 10 located in front. Without turning, it bends. FIG. 3 is a diagram showing an example of bending to the left. On the other hand, when a displacement is applied in the opposite direction, the corner portion of the next shell member 10 comes into contact with the rear end surface of the shell member 10 positioned in front, and the shell member 10 cannot rotate and the bending of the protector is restricted.

The harness wire protector is used at a wiring portion such that the position of the accommodated harness wire is displaced in use. For example, when the harness wire protector is used for the back door 12 of an automobile shown in FIG. As shown in FIG. 5, the harness wire A connected to the back door window 13 is mechanically displaced and bent as the back door window 13 moves up and down.

In the case of the conventional harness wire protector, since it bends in two directions, the bending direction is not constant depending on the condition of vibration or the vertical movement of the back door window 13, and therefore it moves by bending. Other parts cannot be placed within the maximum range. On the other hand, since the harness wire protector according to the present invention bends in one direction as described above, the bending direction of the harness wire A along with the vertical movement of the back door window 13 and the locus of its change are constant. , The movement position is regulated. Further, since the bending direction is limited, the possibility of resonance when vibration is received is small, and therefore, the mounting portion of the harness wire A is not continuously shaken, and the harness wire A is prevented from falling off and is appropriately protected. . FIG. 6 shows a connection structure between the back door window 13 and the harness wire A of the portion B shown in FIG.

[0021]

As described above, according to the present invention, when the position of the accommodated harness wire is mechanically displaced, the bending direction due to the displacement is limited to one direction within one plane. Since the range of movement is narrowed and the locus of movement is constant, it is easy to set the arrangement position of other parts. Further, since the vibration due to the vibration is reduced and the direction thereof is limited, the harness wire can be appropriately protected and the possibility of falling off can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external shape of a shell member that constitutes a harness wire protector according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a connected state of shell members in the embodiment of the present invention.

FIG. 3 is a diagram illustrating a bending direction of a harness wire according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a rear portion of an automobile according to an embodiment of the present invention.

FIG. 5 is a perspective view showing the structure of a back door window according to the embodiment of the present invention.

FIG. 6 is an enlarged exploded perspective view of a B portion shown in FIG. 5 according to the embodiment of the present invention.

FIG. 7 is a perspective view showing an external shape of a shell member that constitutes a conventional harness wire protector.

FIG. 8 is a diagram illustrating a bending direction of a conventional harness wire protector.

[Explanation of symbols]

 1, 21 Space 2, 22 Front part 3, 23 Rear part 4, 24 Convex part 5 Hole part 6 Opening 10, 20 Shell member 11 Harness wire 12 Back door 13 Back door window 25 Long hole part

Claims (3)

[Claims] 1. A harness wire protector configured by connecting a plurality of shell members formed of a hard material and having a C-shaped cross section and having a space for accommodating a harness wire therein, wherein the shell member is , The front part with a narrow outer width and the rear part with a wide outer width are integrally molded along the accommodated harness wire, and the front part of one shell member is incorporated into the rear part of the next shell member, The concave portion or hole provided inside the rear portion of the next shell member is in contact with the convex portion provided outside the front portion at a position where the front end surface of the front portion of one shell member and the rear end surface of the rear portion of the next shell member are substantially in contact with each other. A harness wire protector having a structure for fitting and fitting, wherein one corner portion of a front end face thereof is formed in an arc shape centered on the convex portion. 2. The harness wire protector according to claim 1, wherein the opening having the C-shaped cross section is formed so narrow that one electric wire of the accommodated harness wire can pass therethrough. 3. One of the corners formed in the arc shape,
The corner portion on the opening side of the C-shaped cross section.
Harness wire protector as described.