JP2003009356A - Grommet with resin inner sleeve for fixing connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide versatility and reduce the cost of a grommet having an inner sleeve. SOLUTION: The grommet body 11, made of an elastic body, comprises a smaller-diameter cylindrical portion 12 for electric wire insertion and a larger- diameter cylindrical portion 13 formed at the tip of the smaller-diameter cylindrical portion; a resin inner sleeve 20 is housed in the larger-diameter cylindrical portion 13; and a connector-fixing piece 22 is mode to protrude from the end of the peripheral wall of the inner sleeve 20, protruding from the opening 13a at the end of the larger-diameter cylindrical portion 13, with a hinge portion 21 in-between. A locking portion 22a is formed on the connector-fixing piece, and a locked portion 30a of a connector 30 connected to the end of electric wires to be inserted into the grommet body 11 is installed on the locking portion 22a of the connector fixing piece 22 by locking; and thus the angle of inclination of the connector 30, fixed to protrude from grommet body 11, can be varied to a required angle.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grommet with a resin inner sleeve for fixing a connector.
An object of the present invention is to improve a structure in which a connector at an end of an electric wire is fixed to a resin inner sleeve in a grommet to be mounted on a through hole of a vehicle body panel by being assembled to a wire harness arranged in an automobile. 2. Description of the Related Art In such a grommet, when a door harness arranged on a door side is bridged through a through hole of a door panel to a through hole of a body panel, a wire harness W / between the door panel and the body panel is used. The grommet 1 shown in FIG. The grommet 1 has a resin inner sleeve 3 mounted inside a large-diameter cylindrical portion 2a provided at the end of a grommet main body 2 made of rubber or elastomer, and a lock claw 3a provided on the outer surface of a peripheral wall of the inner sleeve 3. One-touch locking can be achieved simply by inserting it into the through hole H1 of the vehicle body panel A. More specifically, the grommet 1 is engaged with through holes H1 and H2 formed in a vehicle body panel A and a door panel B.
Is a large-diameter cylindrical portion 2 which is attached to one end of a bellows-shaped small-diameter cylindrical portion 2b of the grommet body 2 and is fitted and locked in a through hole H2 of a door panel.
c, and the large-diameter cylindrical portion 2a attached to the through hole H1 of the vehicle body panel is continuously provided at the other end. A locking groove 2d is provided on the outer peripheral surface of the large-diameter cylindrical portion 2c on one door panel B side, and the locking groove 2d is fitted in the periphery of the through hole H2 and mounted in a sealed state. [0004] An inner sleeve 3 made of resin is fitted and engaged with the large-diameter cylindrical portion 2a on the other vehicle body panel A side.
a inner sleeve 3 slightly protruding from the tip opening
A lock claw 3a for locking the vehicle body is provided from a front end of the outer surface of the peripheral wall. When the connector C provided at the end of the wire harness to be inserted into the grommet is held in a state of protruding from the grommet and is fitted to the mating connector inside the vehicle body, the connector is fixed from the end of the peripheral wall of the inner sleeve to the connector. The connector C connected to the end of the electric wire inserted into the small-diameter cylindrical portion 2b is provided with the connector fixing piece 3b.
It is fixed to. When the grommet 1 is mounted in the through hole H1 of the vehicle body panel A, the connector C fixed to the connector fixing piece 3b and the lock claw 3a are passed through the through hole H1, and the inner surface of the through hole H1 is inserted. The locking claw 3a is locked to the peripheral edge of the through hole H1, and the seal lip 2e provided on the peripheral edge of the opening of the large-diameter cylindrical portion 2a is brought into close contact with the peripheral edge of the outer surface side of the through hole H1.
The grommet 1 is fixed to the vehicle body panel while maintaining the sealing property. At this time, as shown in FIG.
If the connector C cannot be inserted straight because there is some obstacle inside the connector 1, the connector fixing piece 3b is previously projected at a certain angle to the grommet insertion direction and the connector C is fixed at an angle. Is used. However, if the connector fixing piece 3b is fixedly provided at a fixed inclination angle, the mold of the resin inner sleeve 3 becomes complicated, the cost increases, and the grommet 1 is provided. There is a problem that the insertion / attachment work of the camera cannot always be easily performed. In addition, there are various shapes that become obstacles at the grommet attachment locations, and it is necessary to newly provide a resin inner sleeve having a shape corresponding to each location. The present invention has been made in view of the above problems, and has as its object to provide a grommet with a resin inner sleeve for fixing a connector, which can reduce manufacturing costs, has high versatility, and facilitates grommet insertion work. . [0008] In order to solve the above problems, the present invention relates to a grommet to be attached to a wire harness inserted into a through hole of a vehicle body panel, and a small diameter cylindrical portion for inserting an electric wire. A resin inner sleeve is housed in the large-diameter cylindrical portion of the grommet main body made of an elastic body having a large-diameter cylindrical portion at the distal end thereof, and a peripheral wall of the inner sleeve protruding from a distal end opening of the large-diameter cylindrical portion. A lock claw for locking the vehicle body protrudes from the outer end, and a connector fixing piece protrudes from the end of the peripheral wall via a hinge portion, and the connector fixing piece has a lock portion, and the grommet body has Lock the connector to be inserted into the terminal of the electric wire to be inserted into the lock portion of the connector fixing piece by locking and attach it. A grommet with a resin inner sleeve for fixing a connector, which is configured to be able to be positioned at an inclined angle, is provided. As described above, the connector fixing piece provided at the distal end portion of the peripheral wall of the inner sleeve protrudes through the hinge portion, so that the connector locked and coupled to the connector fixing piece can be inserted into the through hole in the through-hole. Can be changed freely. Therefore, it is possible to cope with various shapes of the obstacle inside the through hole by adjusting the hinge portion and changing the angle of the connector, so that each time the shape of the obstacle is different, the connector fixing piece is set to the required angle. There is no need to create a dedicated inner sleeve that is inclined, and costs can be reduced. Moreover, unlike the case where the connector fixing piece is fixedly formed by inclining at a certain angle,
The structure of the resin inner sleeve mold can be simplified, and this also leads to cost reduction. Further, since the angle of the connector can be freely adjusted by the hinge portion, the work of attaching the grommet to the through hole is also facilitated. Embodiments of the present invention will be described below with reference to the drawings. The grommet of the embodiment described below is attached to a door harness that passes through the through hole H1 of the vehicle body panel A after passing through the through hole H2 of the door panel B and is connected to the door harness, similarly to the above-described conventional example. The connector is fixed to the grommet. As shown in FIGS. 1A and 1B, the grommet 10 includes a grommet main body 11 made of rubber or elastomer, and an inner sleeve 20 made of resin. The grommet body 11 is formed by continuously and integrally forming large-diameter cylindrical portions 13 and 14 at both ends of a bellows-shaped small-diameter cylindrical portion 12 for inserting an electric wire, and a resin inner sleeve 20 is provided inside one large-diameter cylindrical portion 13. Accommodating. On the outer periphery of the other large-diameter cylindrical portion 14, a locking groove 14a to be mounted in the through hole H2 of the door panel B is formed in a recess. The large-diameter cylindrical portion 13 that houses the inner sleeve 20 has a seal lip 13
b is projected outwardly, and as shown in FIG. 2, an inner sleeve engaging portion 13c having a U-shaped cross section is provided on the periphery of the opening continuous with the seal lip 13b. A locking flange 20a protruding from the outer peripheral surface of the inner sleeve 20 is inserted and locked into an annular groove 13d opened on the inner peripheral surface of the inner sleeve locking portion 13c, and two pairs of pin holes are provided at opposite sides. 13e is bored from the bottom surface of the annular groove 13d, and a pin 20b projecting from the locking flange 20a of the inner sleeve is inserted into the pin hole 13e, and the inner sleeve 20 is housed and fixed in the large-diameter cylindrical portion 13. I have. The inner sleeve 20 has a substantially rectangular frame shape and is provided with a pair of lock claws 20c for locking the vehicle body from the outer tip at opposite sides of a peripheral wall protruding from the tip opening of the large diameter tubular portion 13. , 20d. A connector fixing piece 22 protrudes from the distal end of the peripheral wall of the inner sleeve 20 via a thin and flexible hinge portion 21 in the distal direction. The connector fixing piece 22 has a locking portion 22a which is coupled to a locked portion 30a provided on the outer surface of the connector housing of the connector 30.
Is provided. [0015] The grommet 10 is connected to a door harness W / H.
3A, first, the locking groove 14a of the one large-diameter cylindrical portion 14 is locked to the peripheral edge of the through hole H2 of the door panel B, and is mounted in a sealed state. Next, the electric wire group w of the door harness W / H inserted into the through hole H2 is inserted into the small-diameter cylindrical portion 12 to be led out of the opening 13a of the other large-diameter cylindrical portion 13, and the connector 30 is connected to the terminal.
And the connector 30 is locked to the connector fixing piece 22 and attached to the inner sleeve 20. Next, the large-diameter cylindrical portion 13 is attached to the through hole H1 of the vehicle body panel A. At this time, the connector 30 protruding from the grommet main body 11 and being fixed is first inserted into the through-hole H1, but if it cannot hit the obstacle in the through-hole H1 and can not be inserted straight, the connector 3 is connected to the hinge 21.
Insert while adjusting the angle of 0. Next, the tip of the inner sleeve 20 is inserted into the through hole H1, and the pair of lock claws 20c and 20d are inserted into the through hole H as shown in FIG.
1 and is fitted in a sealed state by making the seal lip portion 20b abut the outer periphery of the through hole H1. In the grommet 10 having the above structure, the connector fixing piece 22 is formed continuously and integrally with the inner sleeve 20 via the thin and flexible hinge portion 21, so that the connector fixing piece 22 is fixed to the connector fixing piece 22. The angle of the connector 30 can be freely changed by the hinge portion 21. That is,
At the time of attaching the grommet 10 to the through hole H1, the angle of the connector 30 is adjusted by the hinge portion 21 so as to avoid an internal obstacle, and a smooth insertion / attachment operation can be performed. In addition, even after being mounted in the through hole H1, the connector 30 can be positioned at a required angle in accordance with the shape of the obstacle inside the through hole H1. Therefore, when the structure having the hinge portion 21 is employed, the shape of the obstacle inside the through hole can be flexibly used and shared, so that the inclination angle of the connector fixing piece differs according to various shapes of the obstacle. It is not necessary to provide an individual inner sleeve exclusively, and cost can be reduced. In addition, since the connector fixing piece 22 is attached to the inner sleeve 20 via the hinge portion 21 whose angle can be freely changed, the mold for molding the inner sleeve 20 also needs to have a connector fixing piece with a specific inclination angle in advance. There is no need to use a mold having a complicated shape with the protrusion 22, and the cost can be reduced by simplifying the mold. As is apparent from the above description, according to the present invention, the connector fixing piece is projected from the inner sleeve accommodated at one end side of the grommet via the hinge portion.
Since the connector connected to the wire end is attached to the connector fixing piece, the inclination angle of the connector with respect to the insertion direction of the grommet into the through hole can be freely changed by the hinge portion. Therefore, even if there is an obstacle inside the through-hole, the connector can be easily inserted and the grommet can be attached by adjusting the automatic operation by the hinge portion. Although the shape of the obstacle inside the through-hole varies depending on the mounting position of the grommet, the inclination angle of the connector can be changed, so that the connector fixing piece has a specific inclination angle according to the shape of each obstacle. There is no need to create a dedicated inner sleeve that has been provided, and one inner sleeve can be shared by a plurality of attachment points. Further, the mold of the inner sleeve in which the connector fixing pieces are fixed and projected at a fixed inclination angle has a complicated structure, but the inner sleeve according to the present invention can simplify the structure of the mold. Therefore, cost can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a grommet according to an embodiment of the present invention,
(A) is a front view and (B) is a side view. FIG. 2 is an enlarged sectional view of a main part of the grommet shown in FIG. 3A and 3B show a state in which the grommet shown in FIG. 1 is attached to a vehicle body, where FIG. 3A is a front view and FIG. 3B is a side view of a main part. FIG. 4 is a diagram of a conventional example. [Description of Signs] 10 Grommets 13, 14 Large-diameter cylindrical portion 20 Inner sleeve 20c, 20d Locking claw 21 Hinge portion 22 Connector fixing piece 22a Lock portion 30 Connector 30a Locked portion

Claims (1)

Claims 1. A grommet to be attached to a wire harness inserted into a through hole of a vehicle body panel of an automobile, wherein the grommet includes an elastic body having a large-diameter cylindrical portion at an end of a small-diameter cylindrical portion for inserting an electric wire. A resin inner sleeve is housed in the large-diameter cylindrical portion of the grommet body, and a lock claw for locking the vehicle body protrudes from the outer surface distal end of the peripheral wall of the inner sleeve that protrudes from the distal end opening of the large-diameter cylindrical portion. And a connector fixing piece protrudes from a tip of the peripheral wall via a hinge portion, and the connector fixing piece is provided with a lock portion. The locked portion of the connector connected to the wire terminal inserted into the grommet body is provided. The connector is fixedly connected to the lock portion of the connector fixing piece and attached to the connector, and the connector that projects from the grommet body and is fixed can be positioned at a required inclination angle. Grommet with resin inner sleeve for connector fixing.