JP2001052551A - Grommet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grommet increasing workability of an installation operation of a corrugated tube by allowing the corrugated tube to be inserted into a through hole easily. SOLUTION: For this grommet, forming a slit 26 from a top end to a thorough hole 25b on a grommet body 25 allows open ends 25c, 25d of the grommet body 25 with the slit 26 formed to come into contact or to depart. An engaging recess 29a is formed on the open end part 25c, and an engaging protrusion 29b engaging the engaging recess 29a is formed on the open end 25b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a grommet,
More specifically, when a corrugated pipe holding a wire member such as a wire harness is inserted into a mounting hole of a vehicle body panel, the mounting hole and the wire harness are prevented from coming into contact with each other, and water or the like enters the panel through the mounting hole. The present invention relates to a grommet that can prevent intrusion.

[0002]

2. Description of the Related Art Generally, when a grommet holding a wire harness is inserted into a mounting hole formed in a panel member that partitions the outside and the inside of a vehicle body, the mounting hole and the grommet are prevented from coming into contact with each other. Grommets are used to prevent the like from entering the inside of the panel (room) from the gap between the mounting hole and the corrugated pipe.

A conventional grommet in which a corrugated pipe of this type is inserted is shown, for example, in FIGS. In FIGS. 12 (a) and 12 (b), reference numeral 1 denotes a corrugated pipe.
a and the annular convex portion 1b are formed alternately and continuously, and the wire harness 2 is inserted through the inner peripheral portion.

In FIG. 12 (b), reference numeral 3 denotes a grommet. The grommet 3 has a cylindrical shape having an annular groove 5a formed in an outer peripheral portion thereof so as to be fitted into a mounting hole 4a of a panel member 4 of a vehicle body. It comprises a large-diameter portion 5 and a small-diameter cylindrical portion 6 protruding from the large-diameter cylindrical portion 5 and through which the corrugated pipe 1 can be inserted.

[0005] The cylindrical small-diameter portion 6 is generally arranged on the outdoor side. By winding a tape 7 between the cylindrical small-diameter portion 6 and the corrugated tube 1, the corrugated tube 1 is fixed to the grommet 3. ing. Such a grommet 3
In this case, the wire harness 2 can be wired outside and inside the room through the panel member 3 while maintaining the corrugated tube 1 in a liquid-tight manner by being interposed between the corrugated tube 1 and the panel member 4. .

The grommet 3 is mounted in a circular mounting hole 4a formed in a portion excluding the end of the panel member 4. However, since the area of the panel member is small, the end of the panel member 4 can be formed. When a circular mounting hole cannot be formed in the removed part, or when wiring the wiring harness to the end of the panel member due to the layout of the wiring harness, a special grommet is required. As such a grommet, a new grommet as shown in FIG. 13 has been developed.

In FIG. 13, reference numeral 11 denotes a grommet. The grommet 11 has a body panel (panel member) 12 on its outer periphery.
The grommet body 13 has an engagement groove 13a that can be engaged with the mounting hole 12a formed in the main body.

Further, an insertion hole 13b is formed in the inner peripheral portion of the grommet body 13, and the corrugated pipe 1 is inserted into the insertion hole 13b. In the grommet 11 having such a configuration, after a not-shown diameter expanding machine is inserted into the insertion hole 13b to expand the insertion hole 13b, the corrugated pipe 1 is inserted into the insertion hole 13b, and then the engagement is performed. The grommet 11 is mounted on the vehicle body panel 12 by engaging the groove 13a with the mounting hole 12a.

[0009]

However, in such a grommet 11, when the wire harness 2 is inserted into the insertion hole 13b through the corrugated pipe 1, the diameter expanding machine is inserted into the insertion hole 13b. Since the insertion hole 13b is expanded, a diameter-enlarging machine is required, and the number of steps for inserting the insertion hole 13b is increased, so that there is still room for improvement.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a grommet capable of easily inserting a linear member into an insertion hole and improving the workability of attaching the linear member.

[0011]

According to the first aspect of the present invention,
In order to solve the above-mentioned problem, a grommet body having an engagement groove engageable with a mounting hole formed in a panel member on an outer peripheral portion, and a linear member formed on an inner peripheral portion of the grommet main body so that a linear member can be inserted therethrough In the grommet provided with a large insertion hole, by forming a slit from the end of the grommet body to the insertion hole, the opening end of the grommet body in which the slit is formed can be contacted and separated, and the opening An engagement recess is formed on one side of the end, and an engagement projection engaging the engagement recess is formed on the other side of the open end.

In this case, a slit is formed from the end of the grommet main body to the insertion hole, and the opening end of the grommet main body in which the slit is formed is separated from the grommet main body.
The linear member can be easily inserted into the insertion hole through the slit. In addition, by contacting the opening end after insertion, the opening end can be closed and the linear member can be prevented from falling out of the insertion hole.

Also, when the opening end is brought into contact, the engagement recess formed on one side of the opening end is engaged with the engagement recess formed on the other side of the opening end. The engagement groove formed on the outer peripheral portion of the grommet main body can be prevented from being shifted due to lateral displacement of the grommet main body, and the engagement groove can be securely engaged with the insertion hole of the panel member.

According to a second aspect of the present invention, in order to solve the above problem, in the first aspect of the present invention, the linear member is formed of a wire harness, and a corrugated pipe is provided on an outer peripheral portion of the wire harness. It is characterized in that, on the inner peripheral surface of the insertion hole, an engaging concave / convex portion that can be engaged with an annular concave / convex portion formed on the outer peripheral portion of the corrugated pipe is formed.

In this case, it is possible to prevent the corrugated pipe from laterally displacing with respect to the grommet body.

[0016]

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

FIGS. 1 to 4 show a first grommet according to the present invention.
It is a figure showing an embodiment.

First, the configuration will be described. In FIG. 1, 21
Reference numeral denotes a corrugated pipe. The corrugated pipe 21 has annular concave portions 21a and annular convex portions 21b formed alternately and continuously on an outer peripheral portion, and a wire harness (linear member) 22 can be inserted into an inner peripheral portion. .

In FIGS. 2 to 4, reference numeral 23 denotes a grommet. The grommet 23 has an engaging groove 25a which can be engaged with a mounting hole 24a formed in an outer peripheral portion at an end of a vehicle body panel (panel member) 24. Grommet body 25 having
Note that the vehicle body panel 24 is provided at a portion or the like that partitions the room and the outside.

An insertion hole 25b is formed in the inner peripheral portion of the grommet main body 25, and the corrugated pipe 21 is inserted into the insertion hole 25b. The grommet main body 25 has a flat upper end, a slit 26 is formed from the upper surface to the insertion hole 25b, and the open ends 25c, 25 of the grommet main body 25 in which the slit 26 is formed.
d comes into contact with and separates from the grommet body 25.
Is openable and closable.

The grommet body 25 has a pair of tongues 28.
The tongues 28a, 28b are located at the opening end surfaces of the insertion holes 25b, and the corrugated pipe 21 is fixed by a tape (not shown).

The opening end 25c is formed with an engaging recess 29a, and the opening end 25d is formed with a mountain-shaped engaging projection 29b that engages with the engaging recess 29a. Therefore,
When the engaging projection 29b is engaged with the engaging recess 29a, the grommet body 25 can be prevented from laterally shifting.

In the grommet 23 having such a configuration, the corrugated tube 21 is inserted into the insertion hole 25b through the slit 26 by separating the open ends 25c and 25d, and then is engaged with the engagement concave portion 29a. The opening end portions 25c and 25d are brought into contact with each other so that the
After closing 26, the corrugated pipe 21 is fixed to the tongues 28a and 28b by tape, and the corrugated pipe 21 is attached to the grommet 23. Next, the wire harness 22 is fixed to the vehicle body panel 24 via the corrugated pipe 21 and the grommet 23 by fitting the engaging groove 25a into the mounting hole 24a, and wiring is performed both indoors and outdoors (see FIG. 4). .

As described above, in this embodiment, the slit 26 is formed from the upper end of the grommet main body 25 to the insertion hole 25b, and the opening ends 25c and 25d of the grommet main body 25 in which the slit 26 is formed are separated. Accordingly, the corrugated pipe 21 can be easily inserted into the insertion hole 25b through the slit 26. After the insertion, the opening ends 25c, 25c
By bringing d into contact, it is possible to prevent the corrugated pipe 21 from falling out of the insertion hole 25b by closing the open ends 25c and 25d.

When the opening ends 25c and 25d are brought into contact with each other, the engaging projection 29b is engaged with the engaging recess 29a. It is possible to prevent the formed engaging groove 25a from being displaced, and to reliably engage the engaging groove 25a with the insertion hole 24a.

Further, tongues 28a and 28b are provided on both sides of the grommet body 25 located at the opening end face of the insertion hole 25b, and the corrugated pipe 21 is wound around the tongues 28a and 28b by tape. The grommet body 25 can be firmly fixed.

In the present embodiment, the tongues 28a and 28b are provided on both the open end surfaces of the grommet main body 25, but may be provided only on one side. Further, although only one pair of the engaging concave portion 29a and the engaging convex portion 29b is provided, a plurality of engaging concave portions 29a and plural engaging convex portions 29b may be provided.

FIGS. 5 to 7 show a second grommet according to the present invention.
It is a figure showing an embodiment. In the present embodiment, the first
The same components as those of the embodiment are denoted by the same reference numerals, and description thereof is omitted.

In this embodiment, as shown in FIGS. 5 and 6, annular convex portions 27a and annular convex portions 27b are formed alternately and continuously in the insertion holes 25b, and the annular convex portions 27a and the annular convex portions 27b are corrugated. The annular concave portion 21a and the annular convex portion 21b of the tube 21 are engaged with each other. By doing so, it is possible to prevent the corrugated pipe 21 from being laterally shifted with respect to the grommet body 25.

Further, in the present embodiment, the surfaces of the tongues 28a, 28b are formed in a planar shape. However, as shown in FIG. Concavo-convex portions 30a and 30b that can be engaged with the annular convex portion 21b may be formed.

In this manner, the corrugated tube 21 is connected to the tongue.
The tongues 28a, 28
Corrugated pipes are provided on the uneven portions 30a and 30b formed on the surface of
Since the annular concave portion 21a and the annular convex portion 21b of the 21 can be engaged, the lateral displacement of the corrugated pipe 21 with respect to the grommet 23 can be more reliably prevented.

In each of the above embodiments, the wire harness 22 is attached to the grommet 23 via the corrugated pipe 21. The grommet 23 is attached to the grommet 23, such as an air conditioning pipe or a washer tube. Simple piping may be used.

In each of the above embodiments, the engagement recess 29a
Although the engaging projection 29b is formed in a mountain shape, the present invention is not limited to this.

Specifically, as shown in FIG. 8, a semicircular engaging concave portion 41a and a semicircular engaging convex portion 41b engaged with the engaging concave portion 41a may be used. As shown in FIG. 10, a wave-shaped engaging concave portion 42 a and a wave-shaped engaging convex portion 42 b engaging with the engaging concave portion 42 a may be used. It may be constituted by a square engaging projection 43b which engages with the engagement recess 43a, and as shown in FIG.
Alternatively, it may be constituted by a saw-tooth-shaped engaging projection 44b which engages with a.

[0035]

According to the first aspect of the present invention, a slit is formed from the end of the grommet main body to the insertion hole, and the opening end of the grommet main body having the slit formed is separated from the grommet main body. The corrugated tube can be easily inserted into the insertion hole through the slit. Further, by contacting the opening end after insertion, the opening end can be closed to prevent the corrugated tube from falling out of the insertion hole.

Also, when the opening end is brought into contact, the engaging recess formed on one side of the opening end is engaged with the engaging recess formed on the other side of the opening end. The engagement groove formed on the outer peripheral portion of the grommet main body can be prevented from being shifted due to lateral displacement of the grommet main body, and the engagement groove can be securely engaged with the insertion hole of the panel member.

According to the second aspect of the present invention, it is possible to prevent the corrugated pipe from laterally displacing the grommet body.

[Brief description of the drawings]

FIG. 1 is a view showing a grommet according to a first embodiment of the present invention, and is an external view of a corrugated pipe attached to a grommet.

FIG. 2 is a diagram illustrating a grommet and a vehicle body panel according to the first embodiment.

FIG. 3A is a front view of the grommet according to the first embodiment,
(B) is its side view, (c) is its top view.

FIG. 4 is a diagram showing a grommet attached to the corrugated pipe of the first embodiment as viewed from above.

FIG. 5 is a diagram illustrating a grommet according to a second embodiment of the present invention, and is a diagram illustrating the grommet and a vehicle body panel.

FIG. 6A is a sectional view of a grommet according to a second embodiment,
(B) is a figure which shows the state which inserted the corrugated pipe into the insertion hole of the grommet main body.

FIG. 7 is a cross-sectional view of a grommet showing another shape of a tongue according to the second embodiment.

FIG. 8 is a view showing another shape of the engaging concave portion and the engaging convex portion.

FIG. 9 is a diagram showing another shape of the engaging concave portion and the engaging convex portion.

FIG. 10 is a diagram illustrating another shape of the engaging concave portion and the engaging convex portion.

FIG. 11 is a diagram illustrating another shape of the engaging concave portion and the engaging convex portion.

12A is an external view of a corrugated pipe, and FIG. 12B is a view showing a state in which the corrugated pipe is attached to a conventional grommet.

FIG. 13 is a diagram showing a grommet proposed by the present applicant, where (a) is a diagram showing a grommet and a vehicle body panel,
(B) is a figure which shows the state which inserted the corrugated pipe into the insertion hole of the grommet main body.

[Explanation of symbols]

 21 Corrugated pipe 21a Annular concave part 21b Annular convex part 22 Wire harness (linear member) 23 Grommet 24 Body panel (panel member) 24a Mounting hole 25 Grommet body 25a Engagement groove 25b Insertion hole 25c, 25d Open end 26 Slit 27a Annular Convex part 27b Annular concave part 28a, 28b Tongue part 29a Engagement concave part 29b Engagement convex part 30a, 30b Uneven part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takashi Suzuki 1-114 Nishisuehirocho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd. (72) Inventor Takanori Ito 1-14 Nishisuehirocho, Yokkaichi-shi, Mie Sumitomo Inside Electric Co., Ltd. (72) Inventor Satoshi Amihiro 1-14 Nishi-Suehirocho, Yokkaichi-shi, Mie F-term (reference) 5G333 AA09 AB16 AB27 AB29 CB18 EA01

Claims (2)

[Claims] 1. A grommet body having an engagement groove formed on an outer peripheral portion thereof so as to be able to engage with a mounting hole formed in a panel member, and an insertion hole formed on an inner peripheral portion of the grommet body and through which a linear member can be inserted. In the grommet provided with, by forming a slit from the end of the grommet body to the insertion hole, the opening end of the grommet body in which the slit is formed can be contacted and separated, and the A grommet, wherein an engagement recess is formed on one side and an engagement protrusion engaging with the engagement recess is formed on the other side of the opening end. 2. The annular member formed of a wire harness, wherein a corrugated pipe is mounted on an outer peripheral portion of the wire harness, and an inner peripheral surface of the insertion hole is formed on an outer peripheral portion of the corrugated pipe. The grommet according to claim 1, wherein an engaging uneven portion that can be engaged with the uneven portion is formed.