JP2002247737A - Grommet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accommodate a connector in a grommet for inserting an option electric wire. SOLUTION: This grommet is attached to a wire harness being inserted into a drilled hole which is drilled in a body panel of a vehicle, and comprises a grommet body constituted of an elastic material provided with a connector storing part for storing a connector connected to the front end of a bundle of electric wires of the wire harness on the front end of an electric-wire inserting cylindrical part, into which the wire harness is inserted and a resin- made inner sleeve for locking a connector by fitting it thereinto and fitting the connector in the connector storing part. A cover part is formed in a protruding manner from a part of the peripheral wall of the inner sleeve via a thin hinge, and an inserting space for the option electric wire is formed with the cover part covering the peripheral wall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grommet to be mounted on a wire harness routed to an automobile and mounted in a through hole of a vehicle body panel. More specifically, an inner sleeve is fitted inside a grommet, and the wire harness is provided. To hold the connector attached to the connector.

[0002]

2. Description of the Related Art Conventionally, a grommet is attached to a wire harness that is inserted into a through hole formed in a body panel of an automobile, and the grommet is mounted in the through hole of the body panel to provide waterproofing and dustproofing to a vehicle compartment. Sound insulation and wire harness protection are also provided.

When laying a wire harness through a through hole in a door panel and a vehicle body panel, a grommet 1 as shown in FIG. 7 is used. The grommet 1 is provided with a vehicle body locking portion 2 on the door panel side and a vehicle body locking portion 3 on the vehicle panel side on both sides of the bellows-shaped electric wire insertion portion. Through hole H of door panel P1
1. Locked in the through holes H2 of the vehicle body panel P2.

The vehicle body engaging portion 2 on the door panel side is formed by providing a groove on the outer peripheral surface of the large diameter portion 1a of the grommet 1, and the groove is locked in the through hole H1 of the door panel P1. On the other hand, the vehicle body locking portion 3 on the vehicle body panel side has a resin inner sleeve 4 fitted therein, and locks a locking claw 4a provided on the inner sleeve 4 with a through hole H2 of the vehicle body panel P2.

The grommet 1 has a wire harness W /
H, is inserted through a small-diameter electric wire insertion tube portion 1b protruding from the vehicle body locking portion 3 on the vehicle body panel side, and is connected to the ends of electric wires w1 'and w2' constituting the wire harness W / H, 5b is exposed outside the grommet 1.

[0006]

In the above grommet configuration, the inserted wire harness W / H and the connectors 5a and 5b are led out of the grommet tip without being fixed to the grommet 1, and the grommet 1 is connected to the door panel P1. When the connectors 5a and 5b are inserted into the through-hole H1 and the through-hole H2 of the vehicle body panel P2, the connectors 5a and 5b interfere with the peripheral panel of the through-hole, so that the grommet 1 is difficult to insert, and the connectors 5a and 5b, the electric wires w1 ', There is a problem that w2 'may be damaged by interference.

The above problem can be solved if the connector is fixedly held inside the grommet by providing a connector holding portion on the inner sleeve fitted inside the grommet. However, since the connector held by the inner sleeve is connected to the standard electric wire w1 ', there is a problem that if there is an optional electric wire w2', it cannot pass through the grommet.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has an object to provide a grommet of a type in which a connector is held by an inner sleeve so that an optional electric wire can be passed through the grommet. I have.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a grommet to be attached to a wire harness inserted into a through hole formed in a body panel of an automobile, wherein the wire harness is inserted through the wire harness. A grommet main body made of an elastic material having a connector accommodating portion for accommodating a connector connected to an end of the wire group of the wire harness at the distal end of the cylindrical portion, and the connector is internally fitted and locked and fixed inside the connector accommodating portion. An inner sleeve made of a resin to be fitted is provided, and a cover portion is protruded from a part of the peripheral wall of the inner sleeve via a thin hinge, and insertion of an optional electric wire in a state where the cover portion is covered on the peripheral wall. A grommet characterized by having a configuration in which a space is provided is provided.

As described above, even when the connector is held by the inner sleeve, the optional wire can be passed through the grommet by providing an insertion space for the optional wire between the connector and the inner sleeve.
By fixing the inner sleeve to the grommet while holding the connector through the inner sleeve in which the connector is fitted, the connector can be accommodated in the grommet and the optional wire can be passed through the grommet. In addition, regardless of the insertion of the optional wires, the inner sleeve for fitting the connector inside can be fixed to the grommet.
The grommet can be used in common.

Further, since the cover is integrally formed with the peripheral wall via the thin hinge, the cover can be easily covered with the hinge by bending the cover with a single touch.

The cover portion protrudes from the base end of the connector lock portion projecting stepwise from the peripheral wall of the inner sleeve via a thin hinge, and projects from the base end of the lock portion via the thin hinge. The space between the recessed portion on both sides of the connector lock portion and the cover portion serves as an insertion space for the option electric wire, and the body of the inner sleeve is defined by two sides of the peripheral wall of the inner sleeve which are orthogonal to the connector lock portion. A locking claw for locking is projected.

[0013] Since the connector lock portion protrudes stepwise from the peripheral wall of the inner sleeve, dents are formed on both sides thereof. By projecting the cover portion from the base of the connector lock portion, a space for inserting an optional electric wire can be formed between the recess and the cover portion, and the inner sleeve and the connector housing portion can be enlarged. In addition, a space for inserting the option electric wire can be provided. Further, since the lock claws for locking the vehicle body are protrudingly provided on the opposite side in a direction orthogonal to the insertion space for the option electric wires, it is possible to pass the option electric wires at positions not interfering with the lock claws.

An engaging flange is projected from the cover and the remaining side of the peripheral wall to form a continuous annular frame with the cover covering the peripheral wall. It is configured to insert and lock into an annular groove formed in the peripheral surface, and to project pins at four corners of the annular frame to insert and lock into pin holes drilled at four corners of the connector accommodating portion. I have.

According to the above configuration, the locking flange portion of the inner sleeve is fitted into the annular groove on the inner peripheral surface of the connector accommodating portion, and can be securely locked to the grommet. Further, since the insertion pin is inserted and locked in the peripheral wall of the connector accommodating portion, the inner sleeve can be securely held in the connector accommodating portion.

The grommet is attached to a door harness through which a through hole of a door panel and a through hole of a vehicle body panel are inserted. The grommet main body has a large diameter having a wire insertion portion and a vehicle body locking groove recessed in an outer peripheral surface. The connector, the bellows-like electric wire insertion portion, and the connector accommodating portion are continuously formed integrally, and the option electric wire is inserted through the inside of the grommet main body, and is drawn out through the insertion space in the connector accommodating portion. .

Since the door harness inserted between the door panel and the vehicle body panel is inserted through two through holes of the door panel and the vehicle body panel, if the connector is exposed from the end of the grommet, the penetrating workability deteriorates. When the connector is accommodated by providing the connector accommodating portion at the tip, the penetrating work can be facilitated and the connector can be hardly damaged. Further, although an optional part is often attached to the door, the optional electric wire can be passed through the inside of the grommet while holding the connector on the grommet as described above.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. The grommet of the embodiment is attached to a door harness that passes through the through hole H2 of the vehicle body panel P2 after passing through the through hole H1 of the door panel P1 and a connector that is connected to the tip of the door harness inside the grommet as in the conventional example. It is fixed to.

As shown in FIG. 1, the grommet 10 is a grommet body 11 made of rubber or elastomer.
And an inner sleeve 20 made of resin. The grommet body 11 includes an electric wire insertion tube portion 12, a large-diameter tube portion 13, a bellows-shaped electric wire insertion tube portion 14, and a connector housing portion 15 from one end side.
Are continuously and integrally molded. The connector accommodating portion 15 accommodates an inner sleeve 20 made of resin for fitting and fixing the connector 30 therein. On the outer periphery of the large-diameter cylindrical portion 13, a vehicle body locking groove 16 to be mounted in the through hole H1 of the door panel P1 is recessed, and the inner sleeve 20 is locked to a peripheral edge of the through hole H2 of the vehicle body panel P2. Lock claw 21g
Is provided.

The connector accommodating portion 15 has a sectional shape corresponding to the sectional shape of the inner sleeve 20, as shown in FIG. 2 (A), and has an opening 15a at its tip and accommodates the entire inner sleeve 20. An annular groove 15b for providing depth and for positioning and holding the inner sleeve 20 is provided on the front end side of the inner wall surface. further,
As shown in FIG. 2B, pin holes 15i are provided at four corners of the annular groove 15b.

As shown in FIGS. 3 and 4, the inner sleeve 20 has a connector locking portion 21d projecting stepwise at the center of one side of a rectangular frame-shaped peripheral wall 21 surrounding the outer periphery of the connector 30. Both sides of 21d are L-shaped depressions 21e. A cover portion 22 is integrally formed and protruded from a base end of the connector lock portion 21d via a thin hinge portion 21c. The cover portion 22 is large enough to cover the peripheral wall 21 on which the connector lock portion 21d is protruded, and the cover portion 22 is formed by bending the thin hinge portion 21c and covering the peripheral wall 21 with the concave portion 21e of the peripheral wall 21. An insertion space S for an option electric wire is formed between the cover and the cover 22. Further, the cover 22 is connected to one of the sides of the peripheral wall 21 so as to be continuous with the remaining three sides of the peripheral wall 21.

In order to cover the cover portion 22 in a normal posture with respect to the peripheral wall 21 without displacement, a pair of right and left locking pieces 22a are protruded from the inner surface of the cover portion 22, and the pair of locking pieces 22a are provided on opposite surfaces of the locking pieces 22a. First locking projection 22a-1, second locking projection 22
a-2 is provided. On the other hand, the connector lock portion 21
d, the first and second guide projections 21a-1, 2
1a-2 is provided.

The guide projections 21a-1 and 21a
-2, as shown in FIG. 4, the guide side is an arc surface,
The first guide protrusion 21a-1 on one side is provided at a position along the upper surface of the first lock protrusion 22a-1 on the one side. Further, the second guide projection 21a-2 on the other side is provided at a position along the lower surface of the second lock projection 22a-2 on the other side, and the first lock projection 22a-1 is moved upward from the second lock projection 22a-2. Projection 22a-
2 is configured to be guided from below. The first guide projection 21a-1 has a recess P
The first guide projection 22a-1 is dropped into the recessed portion P so that the cover portion 22 is stably held at an upright position covering the peripheral wall 21.

On the three sides of the continuous cover portion 22 and the peripheral wall 21 not covered with the cover portion 22, locking flange portions 22b, 21b protrude from the outer peripheral surface. With the cover portion 22 covered on the peripheral wall, a continuous annular frame 20b is formed to be inserted and locked in the annular groove 15b of the connector housing portion 15. Further, pins 20i project outward from the four corners of the annular frame 20b, and are inserted into pin holes 15i formed at the four corners of the connector housing. In the inserted state, the pins 20i are dimensioned so as not to protrude from the outer surface of the connector housing.

Small projections 22f, 21f are provided on opposite end faces of the locking flanges 22b, 21b, and the small projections 22f, 21f are vertically moved in a state where the locking flanges 22b, 21b are continuous. To be positioned and held.

Further, the inner sleeve 20 is provided with a lock claw 21g for locking the vehicle body on a peripheral wall orthogonal to the peripheral wall on which the cover portion 22 is covered. The lock claw 21 g is projected from the opening 15 a of the connector housing 15.

As shown in FIG. 3, the connector 30 has a locked portion 32 which is locked at the center of the peripheral wall 31 with the connector locking portion 21d of the inner sleeve 20. The connector 30 is connected to a terminal of a standard electric wire (an electric wire other than the optional electric wire) w1 of the door harness W / H.

The standard electric wire w to the grommet 10 having the above structure
A procedure for attaching the connector 30 and passing the optional electric wire w2 will be described.

Standard electric wire w1 and optional electric wire w
2 is inserted through the wire insertion tube portion 12 on one end side of the grommet body 11, and the large-diameter tube portion 13, the bellows-shaped wire insertion tube portion 14,
Pass the connector housing 15 through. After the terminal (not shown) of the wire terminal drawn out from the connector accommodating portion 15 is passed through the inner sleeve 20, the terminal is inserted and locked in the connector 30. In this state, as shown in FIG. 3, the connector 30 is inserted into the inner sleeve 20 in the direction of the arrow in the figure, and the connector lock portion 21d of the inner sleeve 20 and the locked portion 32 of the connector 30 are locked. A half-side portion of the connector 30 is internally fitted and fixed to 20. The terminals of the electric wires may be connected to the connector with the connector 30 attached to the inner sleeve 20.

Subsequently, as shown in FIG. 5 (A), with the cover portion 22 of the inner sleeve 20 opened, the optional electric wire w2 is inserted into the recessed portion 21e of the inner sleeve 20.
Through. Thereafter, the thin hinge portion 21c is bent, the cover portion 22 is put on the peripheral wall 21, and an insertion space S surrounding the option electric wire w2 passed through the recess 21e is formed as shown in FIG. 5B.

When bending the thin hinge portion 21c, FIG.
As shown in (A) to (C), the upper surface of the first locking projection 22a-1 is on the circular arc surface of the first guiding projection 21a-1, and the lower surface of the second locking projection 22a-2 is the second guiding projection. Projection 21a-2
6D, the locking projection 22a-1 is fitted into the recessed portion p on the arc surface with the cover portion 22 covering the peripheral wall 21 as shown in FIG. 6 (D). Will be retained. In this way, by guiding the locking projections 22a on both sides from above and below, the cover portion 22 can be covered on the peripheral wall 21 without displacement, with the thin hinge portion 21c as a fulcrum.

In a state where the cover portion 22 is put on the peripheral wall, the locking flange portion 21b of the peripheral wall and the locking flange portion 22b of the cover portion are provided.
Are continuous in a ring. In this state, as shown in FIG. 5B, the small protrusion 22f of the cover 22 and the small protrusion 21f of the peripheral wall 21 are joined, and the cover 22 is connected to the peripheral wall 21.

As shown in FIG. 5 (B), the inner sleeve 20 in which the connector 30 to which the standard electric wire w1 is connected and the optional electric wire w2 are assembled is connected to the connector accommodating portion 15 of the grommet body 11 in the direction of the arrow in the figure. When pushed inward, the annular frame 20b provided continuously on the outer periphery of the inner sleeve 20 is inserted and locked in the annular groove 15b formed in the inner wall surface of the connector housing portion 15. Also, as shown in FIG. 2B, pins 20i projecting from four corners of the annular frame 20b of the inner sleeve 20 are connected to the inner sleeve fitting cylindrical portion 1.
The inner sleeve 20 can be securely fixed by inserting and locking it into the pin holes 15i formed at the four corners of No. 5.

As described above, the inner sleeve 20 is housed and fixed in the grommet main body 11, so that the connector 30 connected to the terminal of the standard electric wire w1 can be housed and fixed in the grommet 10 without exposing the connector to the terminal. w2 can be passed through the grommet 10.

The grommet 10 into which the standard electric wire w1 and the optional electric wire w2 are inserted is passed through the through hole H1 of the door panel P1 from the connector accommodating portion 15 as shown in FIG. To lock. Subsequently, the lock claw 21g of the inner sleeve 20 protruding from the distal end opening of the connector accommodating portion 15 is connected to the vehicle body panel P2.
At the periphery of the through hole H2. When the connector 30 is inserted into the vehicle body panel, the connector 30 is housed inside the grommet 10. Therefore, only the connector 40 of the optional wire protrudes from the grommet 10.
When the grommet 10 is passed through the through holes H1 and H2 while the 0 is passed through the through holes H1 and H2, the grommet 10 can be easily inserted into the through holes, and the connector does not interfere with the vehicle body panel to cause damage.

When there is no optional electric wire w2, the cover 22 of the inner sleeve 20 in which the connector 30 of the terminal of the standard electric wire w1 is fitted is kept covered on the peripheral wall 21 to accommodate the grommet connector. Part 15
It is housed and fixed. Thus, the optional wire w
Regardless of the presence or absence of the grommet 2, the grommet 10 including the inner sleeve 20 and the grommet body 11 can be used.

[0037]

As is apparent from the above description, according to the grommet of the present invention, even when the grommet main body accommodates the inner sleeve for holding the connector and the connector can be fixed inside the grommet, Optional wires can be passed through the inner sleeve.

As described above, since the connector does not protrude to the outside of the grommet, when the grommet is inserted into the through-hole of the vehicle body panel, there is no possibility that the connector will interfere with the panel on the periphery of the through-hole. Can be improved,
The connector and the electric wire connected to the connector are not damaged.

Further, the optional electric wire can be easily held on the inner sleeve with one touch only by passing the optional electric wire through the inner sleeve and covering the cover with the hinge by bending the hinge. Further, since the grommet can be shared regardless of the presence or absence of the optional wires, the number of parts can be reduced and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a grommet of the present invention.

FIGS. 2A and 2B are main-portion cross-sectional views each showing a state in which an inner sleeve is fixed to a connector housing portion.

FIG. 3 is an exploded perspective view of an inner sleeve and a connector.

4A and 4B show a state in which a cover portion of an inner sleeve is opened, wherein FIG. 4A is a plan view, FIG. 4B is a cross-sectional view taken along line V-V of FIG. 4A, and FIG. Line sectional view, (D)
Is a front view.

FIG. 5A is a drawing showing a state in which an optional electric wire is passed through an inner sleeve in which a connector is fitted;
(B) is a drawing showing a state in which an optional electric wire is held by covering a cover portion.

6 (A) to 6 (D) are left and right side drawings showing a process of covering a peripheral wall with a cover portion of an inner sleeve, respectively.

FIG. 7 is a sectional view showing a conventional example.

[Explanation of symbols]

 P1 Door panel P2 Body panel H1, H2 Through hole S Insertion space for option electric wire 10 Grommet 11 Grommet body 15 Connector housing 15i Pin hole 20 Inner sleeve 20b Annular frame 20i Pin 21 Peripheral wall 21a-1 First guide projection 21a-2 Second guide projection 21b Locking flange 21c Thin hinge portion 21d Connector locking portion 21e Depression 21g Locking claw 22 Cover portion 22a-1 First locking projection 22a-2 Second locking projection 22b Locking collar 30 Connector 40 Optional wire connector w1 Standard wire w2 Optional wire

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02G 3/38 H02G 3/28 F

Claims (4)

[Claims] 1. A grommet to be attached to a wire harness inserted into a through hole formed in a vehicle body panel of an automobile, wherein the grommet is provided at a distal end of an electric wire insertion cylinder portion through which the wire harness is inserted.
A grommet body made of an elastic material having a connector accommodating portion for accommodating a connector connected to the end of the wire group of the wire harness; and a resin-made resin fitted and locked in the connector accommodating portion while internally fitting and locking the connector. A cover is protruded from a part of the peripheral wall of the inner sleeve via a thin hinge, and an insertion space for an optional electric wire is provided in a state where the cover is covered on the peripheral wall. Grommet characterized by having 2. The cover portion projects from a base end of a connector lock portion projecting stepwise from a peripheral wall of the inner sleeve via a thin hinge, and the cover portion is connected to the base end of the lock portion via a thin hinge. Between the concave portion on both sides of the connector lock portion and the cover portion as an insertion space for the option electric wire, and from two sides of the peripheral wall of the inner sleeve which are orthogonal to the connector lock portion. 2. The grommet according to claim 1, wherein a lock claw for locking the vehicle body is protruded. 3. An annular frame is formed by projecting a locking flange portion from the cover portion and the remaining side of the peripheral wall to form a continuous annular frame with the cover portion covering the peripheral wall, and connecting the locking flange portion to the connector accommodating portion. Inserting and locking into an annular groove formed in the inner peripheral surface of the connector frame, and protruding pins at four corners of the annular frame, and inserting and locking into pin holes drilled at four corners of the connector housing portion. The grommet according to claim 1 or 2, wherein the grommet has a configuration. 4. The grommet is attached to a door harness through which a through-hole of a door panel and a through-hole of a vehicle body panel are inserted. The grommet body has a wire insertion portion and a large-diameter portion in which a vehicle body locking groove is recessed on an outer peripheral surface. And the bellows-shaped electric wire insertion portion and the connector housing portion are continuously formed integrally, and the optional electric wire is inserted through the inside of the grommet main body, and is drawn out through the insertion space in the connector housing portion. Any one of items 1 to 3
Grommet according to the item.