JPH10283864A - Connector mounting structure of grommet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the easiness in the fitting operation into a holder hole of a grommet and ensure stable fixing once the fitting is completed by introducing such an arrangement that even a plurality of connectors can be handled in the same manner as with a single connector. SOLUTION: A grommet 1 is provided with a holder hole for holding connectors 14 and 16 in the part of the body 2 of grommet 1 to block the hole opened in the body, wherein at least part of the section shape at the bore of the holder hole is formed as mating with the section of at least one of the connectors 14 and 16 and pressure fitting into the holder hole 14 is generated in the condition that the two connectors 14 and 16 to be inserted are coupled together by a coupling member 18.

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 fitted in a wire harness insertion hole provided in a vehicle body lining.

[0002]

2. Description of the Related Art Regarding a wire harness in a vehicle,
In connecting the wire harness from the body to the door, for example, a hole formed in both the body and the door (not shown) is closed through a grommet 1 made of an elastic molded body such as rubber as shown in FIG. The wire harness is inserted to protect the wire harness while maintaining waterproofness.

In FIG. 3, a grommet 1 includes a first grommet main body 2 for closing a hole opened on the body side,
The bellows-shaped hose 4 connects the second grommet body 3 that closes the hole opened on the door side with the bellows-shaped hose 4 so that the inside communicates with it. Let me. Then, the door-side wire harness 5 is inserted into each of the grommet bodies 2 and 3 and the hose 4, and the leading end connecting portion is connected to the pin of the connector 6 at the protruding end on the grommet body 2 side.

If the connection position of the connector 6 with the distal end connection portion of the door-side wire harness 5 is a free position, the connection position fluctuates due to external vibration,
In order to cause an abnormal noise due to collision somewhere, or to severely damage or break the connector 6, the opening of the first grommet main body 2 is used as a holding hole having the outer shape of the connector 6, and the holding hole is provided with a connector. 6 by fixing the connector 6 by its elasticity and the friction holding force of rubber.
The above problems have been solved.

[0005]

In the above-mentioned mounting structure, as shown in FIG. 3, no problem occurs if only one connector is fitted to the grommet body 2, but depending on the conditions such as specifications, there is no problem. More than one connector needs to be fitted and fixed. In such a case, the shape of the holding hole of the grommet main body 2 can be formed in advance in an independent holding hole corresponding to the cross-sectional shape of each connector, but the forming of the grommet itself is troublesome and disadvantageous in cost. In addition, the work of inserting the door-side wire harness connected to each connector is troublesome.

On the other hand, when a plurality of connectors are held by using a single connector or a grommet having a different shape, the shapes of the holding holes and the connectors naturally differ from each other. There is a gap between them, and the contact surface between connectors is the contact surface between plastics.Because of the low frictional force, the degree of adhesion to the holding hole is reduced and sufficient fixing cannot be performed. Since the fitting has to be fixed, the fitting workability is also low.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to improve the workability of fitting a grommet into a holding hole by treating the connector in the same manner as a single connector. Another object of the present invention is to provide a grommet connector mounting structure capable of performing stable fixing once fitted.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a connector mounting structure for a grommet, comprising a connector for wiring in a vehicle and a holding hole for holding the connector. And a connecting member for connecting between the plurality of connectors inserted into the holding hole, wherein an inner peripheral cross-sectional shape of the holding hole has a shape corresponding to at least one cross-sectional shape of the plurality of connectors. The plurality of connectors are press-fitted into the holding holes.

As described above, according to the present invention, since the connectors are connected by the connecting member, a plurality of connectors can be handled as one component, and even if any of the connectors does not conform to the shape of the holding hole, any of the connectors does not match the shape of the holding hole. If one connector is held in conformity with the shape of the holding hole, the same fitting workability as one connector can be obtained for the grommet body,
Further, there is no connection with the gap between the connectors or the contact resistance.

[0010]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG.
Shows a grommet according to the invention and two connectors attached thereto for use between a car body and a door. In the drawings, the same portions as those in the related art are denoted by the same reference numerals, and only different portions or newly added member names are described using different reference numerals.

In the drawing, a grommet 1 made of an elastic molded body such as rubber is provided with a first grommet main body 2 for closing a hole opened on the body side and a grommet main body 2 for closing a hole opened on the door side, as in the related art. The second grommet body 3 is connected with a bellows-shaped hose 4 to communicate with the inside,
The expansion and contraction of the hose 4 follows the movement accompanying the opening and closing of the door.

In addition to the above, in the present embodiment, two door-side wire harnesses 10 and 12 are connected to each grommet main body 2,
3 and the hose 4, and at the protruding end on the grommet body 2 side, the respective distal end connection portions are connected to pins of two connectors 14 and 16 having different height dimensions. It should be noted that the body-side opening and the door-side opening of the grommet 1 may be interchanged.

The connectors 14 and 16 are connected to each other by a plate-shaped connecting member 18 made of a plastic molded body, which is a separate component. A locking tool 20 is protruded, and a locking piece 22 that engages with the locking tool 20 is integrally formed on the contact surface of the connectors 14 and 16 with the connecting member 18.

Incidentally, the connecting form of the locking member 20 and the locking piece 22 is a connecting form such as a generally known locking claw and a locking hole, and can be easily formed by engaging the both. Once they can be connected and once connected, they do not come off easily and become almost permanent unless a large external force is applied. Therefore, this connection work is performed after the completion of the work of connecting the wire harnesses 10 and 12 to the respective pins of both connectors 14 and 16 and both connectors 1 and 12 are connected.
The parts 4 and 16 are integrally connected via a connecting member 18 as shown in FIG. 2A, and can be handled as a single component thereafter.

The connectors 14, 16 and the connecting member 1
At least a part of the inner peripheral shape of the holding hole 24 opened on the grommet main body 2 side with respect to the outer peripheral cross-sectional shape of the connected body made of the connector 1
The cross section similar to the outer peripheral shape of one of the holes 4 and 16 has a continuous hole shape, which reduces the restriction on the opening area, and works when the two wire harnesses 10 and 12 are inserted into the holding hole 24. Is secured.

In this embodiment, the dimensions are as follows:
The height X of the large connector 14 and the overall width Y including the connectors 14, 16 and the connecting member 18 are X-
The dimensions are reduced by the amount of a, Y-b, and the elastic deformation at the time of fitting is ensured by the hole shape conforming to the outer shape of the integrated connectors 14 and 16.

Therefore, as shown in FIG. 2B, when the connectors 14, 16 and the connecting member 18 are press-fitted into the holding hole 24 and fixed, the grommet main body 2 has a dimensional difference a, The outer circumference of the connectors 14 and 16 is tightened by the elastic force of the contraction, which is the reaction force, which spreads outward by the distance b, and the connectors 14 and 16 are firmly fixed. In this embodiment, two connectors 1 having different heights are used.
Although the case where the members 4 and 16 are fitted and fixed in the holding hole 24 at the same time is shown, even if there are more members, if each is connected by a connecting member, it can be handled as one connector.

Further, there is a change in the shape of one of these connectors. Even if the size of the connector is reduced, the other connector is firmly fitted and fixed to the inner periphery of the holding hole 24, and the connecting member 18
The connector whose shape has been changed does not fall off, and the connector has high flexibility with respect to a design change.

[0019]

As is clear from the above description, the connector mounting structure for the grommet according to the present invention has the following effects. After each connector is connected by the connecting member, it can be handled as one part, and the work of fitting the grommet into the holding hole can be easily performed. Once fitted and fixed, it can be firmly held inside the holding hole. Flexible for slight changes in connector shape and interchangeable.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an attachment structure of a connector to a grommet according to the present invention.

FIG. 2A is an explanatory cross-sectional view showing a dimensional relationship between a holding hole of a grommet main body and two connectors fitted into the holding hole. (B) is sectional explanatory drawing which shows the state which fitted the connector in the holding hole.

FIG. 3 is a perspective view showing a conventional mounting structure of a connector to a grommet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grommet 2 Grommet main body 10, 12 Wire harness 14, 16 Connector 18 Connecting member 24 Holding hole

Claims (1)

[Claims] 1. A connector for wiring in a vehicle, a grommet including a holding hole for holding the connector, and an inner peripheral cross-sectional shape of the holding hole corresponds to at least one cross-sectional shape of a plurality of the connectors. A connection member for connecting between the plurality of connectors inserted into the holding hole, and press-fitting the plurality of connectors into the holding hole. The mounting structure of the connector in the grommet.