JPH0541128A - Grommet for wire harness - Google Patents

Abstract

PURPOSE:To provide a grommet for a wire harness, of which assembling work is facilitated and of which an inner diameter is made narrow. CONSTITUTION:After inserting a wire harness into tube shape parts 2a, 2b, a positioning key groove 4 of the tube shape part 2a and a positioning key groove 7 of the tube shape part 2b are interfaced with each other to engage the tube shape parts 2a, 2b with each other. A bellows part 3 is bended to fit an intermediate fixed piece 5 in a hole part provided in a body panel for intermediate fixation, and arrangement position of a grommet for wire harness is thereby fixed. Since the tube shape parts 2a, 2b can be formed short, inner diameter of the grommet for wire harness is made narrower than the conventional one. Since positioning of a joint part of the tube shape parts 2a, 2b is performed by fitting a positioning groove 6 in the positioning groove 7, the tube shape parts 2a, 2b can be arranged at an accurate position quickly, and assembling work of grommet for wire harness is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grommet for a wire harness used when arranging the wire harness in an automobile or the like, and more particularly, a body panel which penetrates between a vehicle body and a movable member such as a door. The present invention relates to a wire harness grommet suitable for bridging a wire harness.

[0002]

2. Description of the Related Art FIG. 8 is a side view showing a conventional wire harness grommet. The attachment portions 11a and 11b are attached to the openings for pulling out the wire harness of the vehicle body panels 12a and 12b, respectively. Tubular part 13a, 1
One end of 3b is connected to each of the mounting portions 11a and 11b. The vinyl tube 14 has tubular portions 13a, 1
It is arranged between 3b and the clip 15a made of resin is attached to the approximate center part. The clip 15a is elastically deformed and fitted by being pressed against a hole provided in a predetermined body panel, whereby the clip 15a is locked to the body panel.

When the wire harness 17 is arranged between the body panels 12a and 12b using the wire harness grommet constructed as described above, the body panel 12
After inserting the wire harness 17 into the tubular portions 13a and 13b and the vinyl tube 14 from the wire harness pull-out openings of a and 12b, the tubular portions 13a and 13b.
The vinyl tube 14 and the vinyl tube 14 are fixed with tape 18, respectively. After that, the clip 15a is engaged with the hole provided in the predetermined body panel to fix the arrangement position of the wire harness grommet.

FIG. 9 is a side view showing another conventional wire harness grommet. In this case, the tubular portion 13c
Both ends of the are connected to the mounting portions 11a and 11b. A taper-shaped clip 15b is integrally formed at a substantially central portion of the tubular portion 13c. This clip 15
The b is elastically deformed by being pressed into a hole provided in a predetermined body panel and is fitted therein, whereby the clip 15b is locked to the body panel.

When the wire harness 17 is arranged between the body panels 12a and 12b using the wire harness grommet constructed as described above, the body panel 12
The wire harness 17 is inserted into the tubular portion 13c through the wire harness pull-out openings a and 12b. After that, the clip 15b is engaged with a hole provided in a predetermined body panel to fix the position of the wire harness grommet.

If the body panel 12a is a part of the vehicle body of an automobile and the body panel 12b is a part of a door attached to the vehicle body, for example, if the wire harness grommet is long, As the door is opened and closed, the wire harness grommet may be sandwiched between the vehicle body and the door in the vicinity of the opening and closing fulcrum. By fixing the, it is possible to avoid the inconvenience.

[0007]

However, the above-mentioned conventional wire harness grommets have the following problems. That is, since the wire harness grommet shown in FIG. 8 has a large number of parts, it is extremely difficult to assemble the parts while positioning them accurately. For this reason, a great amount of assembly time is required, and equipment such as jigs is required.

On the other hand, since the wire harness grommet shown in FIG. 9 is integrally molded by a mold using a core, if the length is particularly long, the core of the mold is deformed by the molding pressure,
To bend. Then, the grommet becomes unevenly thickened,
The function of protecting the wire harness is reduced. For this reason,
The inner diameter of the wire harness grommet cannot be reduced.

Further, the taper-shaped clip 15b formed by integral molding is difficult to be completely fitted into the hole. That is, as shown in FIGS. 10 and 11, when the clip 15b is pushed into the hole 19 of the body panel 12c, the clip 1
Since the base end of 5b is deformed, the body panel 12c
Is insufficiently engaged. This may make it impossible to fix the arrangement position of the wire harness grommet.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a wire harness grommet which can be easily assembled and whose inner diameter can be reduced.

[0011]

A wire harness grommet according to the present invention is divided into a plurality of pipe-shaped members, and one end of each member is fitted to the other end. Connected, the one end is provided with a groove or a protrusion, and the other end is provided with a protrusion or a groove, and the connecting portion is positioned by fitting the groove into the protrusion. Is characterized by.

[0012]

In the present invention, since the portion for accommodating the wire harness is composed of a plurality of pipe-shaped members, even if the wire harness grommet has a long overall length, it is individually provided as a short pipe-shaped member. It can be molded. For this reason, since the core of the mold is not easily deformed during molding, the inner diameter of the wire harness grommet can be made smaller than in the conventional case. Further, since the portion for housing the wire harness is divided into a plurality of members, the work of inserting the wire harness into each member is easy. Further, each pipe-shaped member is provided with a groove or a projection at one end thereof and a projection or a groove at the other end thereof, and the connection portion is positioned by fitting the groove into the projection. Therefore, the plurality of pipe-shaped members can be quickly arranged at accurate positions. Therefore, the assembly work of the grommet for the wire harness is easy. In addition, since the plurality of pipe-shaped members are fitted and connected to each other after assembly, the waterproofness of the wire harness grommet can be improved.

In the present invention, the at least one pipe-shaped member has a locking portion fitted into a predetermined hole and locked therein, and a grip portion projecting from the tip of the locking portion. And is preferably provided. In this case, since the locking portion can be pulled into the hole portion using the handle portion, the locking portion can be reliably engaged with the hole portion. This allows
The arrangement position of the wire harness grommet can be reliably fixed.

[0014]

Embodiments of the present invention will now be described with reference to the accompanying drawings.

FIG. 1 is a side view showing a wire harness grommet according to an embodiment of the present invention, FIG. 2 is a partially enlarged plan view showing a fitting portion thereof extracted, and FIG. 3 is a drawing showing a locking portion thereof. FIG. 4 is a partially enlarged side view showing the same, and FIG. 4 is a side view showing a mounting state of the wire harness grommet according to the embodiment of the present invention.

The attachment portion 1a is attached to an opening for pulling out a wire harness of a movable side body panel such as an automobile door. One end of the tubular portion 2a is connected to the mounting portion 1a. A bendable bellows portion 3 is provided substantially in the center of the tubular portion 2a. The tubular portion 2a is formed in a stepped shape so that the other end has a larger diameter than the other portion, and a positioning key groove 4 is cut in the long diameter portion in the length direction. There is. The intermediate fixing piece 5 has a proximal end portion constricted and a distal end portion formed into a taper shape.
It is provided so as to project between the other end portion and the bellows portion 3. The intermediate fixing piece 5 is elastically deformed and fitted by being pressed against a hole provided in a predetermined body panel, whereby the intermediate fixing piece 5 is locked to the body panel. Intermediate fixing piece 5
A handle portion 6 is provided at the tip of the.

On the other hand, the attaching portion 1b is attached to an opening for drawing out a wire harness of a fixed side body panel of a vehicle body of an automobile or the like. One end of the tubular portion 2b is connected to the mounting portion 1b. The other end of the tubular portion 2b is provided with a positioning key 7 that fits into the positioning key groove 4 of the tubular portion 2a.

When the wire harness grommet configured as described above is used to dispose the wire harness between the fixed side body panel and the movable side body panel, the wire harness pull-out opening of the body panel is After attaching the pair of mounting portions 1a and 1b and inserting the wire harness into the tubular portions 2a and 2b from the opening for pulling out the wire harness, the positioning key groove 4 and the positioning key 7 are aligned, The tubular portions 2a and 2b are connected to each other by fitting them together. After that, the bellows portion 3 is bent and the intermediate fixing piece 5 is engaged with the hole provided in the body panel 8 for intermediate fixing, whereby the arrangement position of the wire harness grommet is fixed.

According to this embodiment, since the portion for accommodating the wire harness is composed of the two tubular portions 2a and 2b,
Even if the overall length of the grommet for wire harness is long,
The tubular portions 2a and 2b can be formed in a short length. For this reason, since the core of the mold is not easily deformed during molding, the inner diameter of the wire harness grommet can be made smaller than in the conventional case.

Further, there are two parts for accommodating the wire harness.
Since the wire harness is divided into individual pieces, the wire harness
The work of inserting into a and 2b is easy. Further, the tubular portion 2
Since the positioning of the connecting portion of a and 2b is performed by fitting the positioning key groove 6 into the positioning key 7,
The tubular portions 2a and 2b can be quickly arranged at accurate positions. Therefore, the assembly work of the grommet for the wire harness is easy.

After the assembly, the tubular portion 2
Since a and 2b are fitted and connected to each other, the waterproofness of the wire harness grommet can be improved.

Further, when the intermediate fixing piece 4 of the tubular portion 2a is fitted into the hole of the body panel 8, the handle portion 6 provided at the tip of the intermediate fixing piece 4 is pulled from the back side of the body panel 8. Unlike the conventional pushing method, the intermediate fixing piece 4 can be securely engaged with the body panel 8. As a result, the arrangement position of the wire harness grommet can be reliably fixed, and the wire harness grommet can be prevented from being caught in the door of the automobile or the like.

5 to 7 are perspective views showing modifications of the wire harness grommet according to the embodiment of the present invention.

First, in FIG. 5, the tubular portion 2a is formed in a stepped shape so that the other end has a larger diameter than the other portion, and the positioning key groove 4 has a thicker portion than the tubular portion 2a. It is formed in a concave shape on the inner surface of the diameter portion. In this case, when the tubular portion 2b is fitted into the tubular portion 2a, the positioning key 7 of the tubular portion 2a elastically pushes out the other end of the tubular portion 2a, and when the tubular portions 2a and 2b reach a predetermined connecting position. The positioning key 7 is fitted into the positioning key groove 4. Next, in FIG. 6, the other end of the tubular portion 2a has the same diameter as the other portion, and conversely, the other end of the tubular portion 2b has a stepped shape so that the other end has a smaller diameter than the other portion. It is molded. in this way,
The shapes of the connecting portions of the tubular portions 2a and 2b are not particularly limited.

Next, in FIG. 7, a resin joint 9 is connected between the tubular portion 2a and the tubular portion 2b. The joint 9 has a tubular shape, and is shaped like a step so that both ends thereof have a smaller diameter than the other portions. Positioning keys 7 are provided on the small-diameter portions of both ends of the joint 9, respectively. In addition, a clip 10 is integrally formed at a substantially central portion of the joint 9. The clip 10 is elastically deformed and fitted by being pressed against a hole provided in a predetermined body panel, whereby the clip 10 is locked to the body panel. On the other hand, the tubular portions 2a and 2b are provided with a concave positioning key groove 4 on the inner surface of the other end. In this case, after inserting the wire harness into the tubular portions 2a and 2b and the joint 9, the tubular portions 2a and 2b are fitted to both ends of the joint 9 based on the positioning key groove 4 and the positioning key 7, respectively. To connect. As described above, the portion for accommodating the wire harness can be configured by the tubular portions 2a and 2b and the joint 9.

[0026]

As described above, according to the present invention, since the portion for accommodating the wire harness is composed of a plurality of pipe-shaped members, even if the total length of the wire harness grommet is long, the wire harness is long. The inner diameter of the grommet for use can be made smaller than the conventional one. Further, since the plurality of pipe-shaped members are provided with the grooves or projections for positioning the connecting portions thereof, the work of assembling the wire harness grommet is easy.

Further, when at least one pipe-shaped member is provided with a locking portion, and a grip portion is provided at the tip of this locking portion, the grip portion is used to secure the locking portion in a predetermined hole portion. The wire harness grommet can be reliably fixed in position.

[Brief description of drawings]

FIG. 1 is a side view showing a grommet for a wire harness according to an embodiment of the present invention.

FIG. 2 is a partially enlarged plan view showing a fitting portion of the wire harness grommet according to the embodiment of the present invention in an extracted manner.

FIG. 3 is a partially enlarged side view showing the locking portion of the wire harness grommet according to the embodiment of the present invention.

FIG. 4 is a side view showing a mounted state of the wire harness grommet according to the embodiment of the present invention.

FIG. 5 is a perspective view showing a modified example of the wire harness grommet according to the embodiment of the present invention.

FIG. 6 is a perspective view showing a modification of the wire harness grommet according to the embodiment of the present invention.

FIG. 7 is a perspective view showing a modified example of the wire harness grommet according to the embodiment of the present invention.

FIG. 8 is a side view showing a conventional wire harness grommet.

FIG. 9 is a side view showing a conventional wire harness grommet.

FIG. 10 is a side view showing a clip of the wire harness grommet of FIG. 9 in an extracted manner.

FIG. 11 is a side view showing an engaged state of a clip of the wire harness grommet of FIG. 9.

[Explanation of symbols]

 1a, 1b, 11a, 11b; mounting part 2a, 2b, 13a, 13b; tubular part 3; bellows part 4; positioning key groove 5; intermediate fixing piece 6; grip part 7; positioning key 8; intermediate fixing part Body panel 9; joints 10, 15a, 15b; clips 12a, 12b, 12c; body panel 14; vinyl tube 17; wire harness 18; tape 19; hole

Claims (2)

[Claims] 1. A plurality of pipe-shaped members are divided, and each member is connected by fitting one end thereof to the other end, and a groove or a projection is provided at the one end. A grommet for a wire harness, characterized in that a protrusion or a groove is provided on the other end, and the connecting portion is positioned by fitting the groove into the protrusion. 2. At least one of the members is provided with a locking portion which is fitted into a predetermined hole and locked, and a grip portion protruding from the tip of the locking portion. The grommet for a wire harness according to claim 1, wherein the grommet is a wire harness.