JP2001236845A - Grommet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grommet, capable of attaching it to a car body panel with a minimum power, as well as connecting the mounted panel on the body to the connector and preventing transmission vibration from the body to the connector. SOLUTION: The grommet is composed of components, an outer grommet 25 capable of attaching to the peripheral potion of a operating 23a of the body panel 23, around the outer area, and an inner grommet with the flange 26a and the hook 26b which are connected to the opening 23a as well as mounted on the outer grommet 25, featuring the higher stiffness than the outer grommet 25. At the opening end of the inner round of the inner grommet 26, an engaging connector 29a for protecting the loose-out of the connector 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a grommet,
Specifically, when the connector provided at the end of the wire harness is inserted together with the wire harness into the opening of the vehicle body panel, the opening and the wire harness are prevented from coming into contact with each other, and water or the like is supplied to the body panel through the opening. The present invention relates to a grommet that can prevent intrusion.

[0002]

2. Description of the Related Art Generally, when a connector provided at the tip of a wire harness is inserted into an opening of a vehicle body panel through a connector provided at the tip of the wire harness, the opening is prevented from coming into contact with the wire harness. A grommet having a special structure is used to prevent water or the like from entering the panel.

As a conventional grommet of this type, for example, there is one shown in FIG. In FIG. 2, reference numeral 1 denotes a wire harness having a connector 2 attached to a tip end thereof.
Is mounted via the grommet 4.

The grommet 4 includes an outer grommet 5 made of a rubber material such as EPDM and CR, and an inner grommet 6 mounted on the outer grommet 5 and made of a resin such as PA or PP.

The outer grommet 5 has a rectangular main body 7.
And a hollow guide member 8 integrated with the main body 7 to guide the wire harness 2 so that the outer peripheral portion of the main body 7 comes into contact with the peripheral edge of the opening 3a.

The inner grommet 6 has a flange 6a formed on an outer peripheral portion thereof to be engaged with a fitting groove (not shown) formed on an inner peripheral portion of the main body 7, and a hook 6b abutting on a peripheral edge of the opening 3a. The grommet 4 is engaged with the vehicle body panel 3 by sandwiching the vehicle body panel 3 between the flange 6a and the hook 6b.

In the grommet 4 having such a structure, after the connector 2 is inserted through the opening 3a, the inner grommet 6 is inserted through the opening 3a, and the body panel 3 is clamped by the flange 6a and the hook 6b. Thus, after the connector 2 is attached to the vehicle body panel 3, the connector 2 is connected to an electric device provided on the vehicle body.

Since the grommet 4 having such a structure has the inner grotto 6 having high rigidity inserted through the opening 3a, the grommet can be mounted on the vehicle body panel with a low insertion force. However, since the connector 2 is in a free state, the connector 2
In order to prevent the transmission of vibration from the vehicle body, it is necessary to fix the connector 2 to the vehicle body panel 3, and the man-hour for mounting the grommet 4 is increased. As a method other than fixing to the vehicle body panel 3 in order to prevent transmission of vibration,
Since it is necessary to attach a urethane sheet to the outer periphery of the connector 2, the number of steps for attaching the grommet 4 is increased in any case, resulting in extremely low workability.

As a solution to such a problem, for example, there is a device as shown in FIG. In FIG. 3, reference numeral 11 denotes a grommet made of a rubber material such as EPDM or CR. The grommet 11 has a main body 12 having a fitting groove 12a which can be fitted into the opening 3 of the vehicle body panel 3 on an outer peripheral portion,
It comprises a hollow guide member 13 integrated with the main body 12 for guiding the wire harness, and a cover member 14 integrated with the main body 12 and capable of storing the connector 2 in the inner peripheral portion.

In the grommet 11 having such a configuration, after the connector 2 is connected to the connector provided on the vehicle body, it is housed in the cover member 14, and then the fitting groove 12a is formed in the opening of the vehicle body panel 3. 3a, it is attached to the vehicle body panel 11.

As described above, since the connector 2 can be directly held by the cover member 14 of the grommet 11, the connector 2 can be fixed to the vehicle body panel 3 or transmitted from the vehicle body panel 3 to the connector 2 without using a urethane sheet. There is a merit that vibrations that occur can be easily suppressed.

[0012]

However, since such a grommet 11 is entirely made of a rubber material, the grommet 11 is attached to the body panel 3 when the grommet 11 is mounted on the body panel 3. The grommet 11 needs to be pushed in with a very strong force, and there is a problem that the mounting of the grommet 11 is troublesome. Also, the grommet 11 is attached to the body panel 3
When the mating connector is connected to the connector 2 with the connector 2 attached, the grommet may come off from the opening due to the pressing force of the mating connector, and the connector 2 is kept in the opening. There is also a problem that a function of a so-called standby type connector cannot be performed, that is, a mating connector is attached and detached in the state.

Accordingly, the present invention can be mounted on a vehicle body panel with a low insertion force, and can reliably connect a mating connector to a connector in a state where the connector is mounted on the vehicle body panel. It is an object of the present invention to provide a grommet that can be prevented from transmitting to a grommet.

[0014]

According to the first aspect of the present invention,
In order to solve the above-mentioned problem, in a grommet fitted to an opening formed in a panel member and a connector fitted to an inner peripheral portion, an outer peripheral portion can be brought into contact with a peripheral edge of an opening of the panel member. An inner grommet having an outer grommet and an inner grommet having higher rigidity than the outer grommet and having a fitting portion fitted to the opening and fitted to the outer grommet, and an inner peripheral portion of the inner grommet; The connector is characterized in that a disconnection preventing portion of the connector is formed at an open end of the connector.

In this case, when attaching the grommet to the vehicle body panel, the inner grommet having high rigidity can be inserted into the opening, so that the grommet can be attached to the opening with a low insertion force.

Further, when the connector is housed in the inner grommet, the connector is securely fixed to the inner grommet by the slip-off preventing portion provided at the opening end of the inner peripheral portion of the inner grommet, and the inner grommet has high rigidity. Can be fitted to the opening, so that the connector on the other side can be attached and detached while the connector is waiting in the opening, and the function as a standby type connector is sufficient. And transmission of vibration from the vehicle body to the connector can be prevented.

According to a second aspect of the present invention, in order to solve the above-mentioned problem, in the first aspect of the present invention, the inner grommet is provided between the base end portion of the inner peripheral portion of the inner grommet and the connector stopper preventing portion. An abutment for positioning the connector on the inner peripheral portion of the inner grommet is formed.

In this case, since the connector can be securely fixed to the inner grommet by the detachment preventing portion and the abutting portion, it is possible to prevent the connector and the inner grommet from coming into contact with each other due to vibration transmitted from the vehicle body and generating abnormal noise. Can be prevented.

[0019]

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

FIG. 1 is a view showing one embodiment of a grommet according to the present invention.

First, the configuration will be described. In FIG. 1, 21
Is a wire harness having a connector 22 attached to a tip end thereof. The wire harness 21 is attached to an opening 23a of a vehicle body panel (panel member) 23 via a grommet 24.

The grommet 24 includes an outer grommet 25 made of a rubber material such as EPDM and CR, and an inner grommet 26 attached to the outer grommet 25 and made of a resin such as PA or PP having a higher rigidity than the outer grommet 25. It is composed of

The outer grommet 25 has a rectangular main body 27.
And a hollow guide member 28 that is integrated with the main body 27 and guides the wire harness 22. The outer peripheral portion of the main body 27 is in contact with the peripheral edge of the opening 23a.

The inner grommet 26 has a flange 26a formed on an outer peripheral portion thereof to be engaged with a not-shown fitting groove formed on an inner peripheral portion of the main body 27, and a hook 26b abutting on a peripheral edge of the opening 23a. With a flange 26a and a hook
By holding the vehicle body panel 23 with 26b, the grommet 24 is engaged with the vehicle body panel 23. The flange 26a and the hook 26b constitute a fitting portion.

On the other hand, at the opening end of the inner peripheral portion of the inner grommet 26, there is formed an engagement protrusion (a detachment prevention portion) 29a, and this engagement protrusion 29a is provided at the end of the connector 22 housed in the inner grommet 26. To prevent the connector 22 from coming out of the inner grommet 26.

At the base end (outer grommet 25 side) of the inner peripheral portion of the inner grommet 26, there is provided an abutment portion 29b for positioning the connector 23 on the inner peripheral portion of the inner grommet 26 between the engagement protrusion 29a. The abutment portion 29b protrudes from the inner peripheral surface of the inner grommet 26.

In the grommet 24 having such a structure, the inner grommet is formed by fitting the flange 26a of the inner grommet 26 into the fitting groove of the main body 27.
After the 26 and the outer grommet 25 are integrated, the wire harness 21 and the connector 22 are inserted through the inner grommet 26, and then the connector 22 is engaged with the engagement projection 29a so as to abut the abutting portion 29b.

Next, the inner grommet 26 is inserted into the opening 23.
After inserting the grommet 24 into the body panel 23, the grommet 24 is firmly fixed to the body panel 23 by sandwiching the body panel 23 between the flange 26a and the hook 26b. Next, a connector of an arbitrary electric device provided on the vehicle body is connected to the connector 22. Also, when the grommet 24 is attached to the vehicle body panel 23, the outer grommet 25 contacts the periphery of the opening 23a,
Water and the like can be prevented from entering the vehicle interior through the opening 23a.

As described above, in the present embodiment, the grommet 24
When attaching to the vehicle body panel 23, the rigid inner grommet 26 can be inserted through the opening 23a,
The grommet 24 can be attached to the opening 23a with a low insertion force.

The connector 22 is connected to the inner grommet 26.
When the connector 22 is stored in the connector 22, the engagement protrusion 29 a provided at the open end of the inner peripheral portion of the inner grommet 26 allows
Can be securely fixed to the inner grommet 26, and the flange 26a and the hook 26b provided on the inner grommet 26 having high rigidity can be fitted to the periphery of the opening, so that the connector 22 is made to wait in the opening 23a. In this state, the mating connector can be attached and detached, the function as a standby connector can be sufficiently performed, and the transmission of vibration from the vehicle body to the connector 22 can be prevented.

Further, since the connector 22 can be securely fixed to the inner grommet 26 by the engagement projection 29a and the abutting portion 29b, the connector 22 and the inner grommet 26 come into contact with each other due to vibration transmitted from the vehicle body, thereby generating abnormal noise. Can be prevented from occurring.

[0032]

According to the first aspect of the invention, when the grommet is mounted on the vehicle body panel, the inner grommet having high rigidity can be inserted into the opening, so that the grommet is mounted on the opening with a low insertion force. be able to.

Further, when the connector is housed in the inner grommet, the connector is securely fixed to the inner grommet by the detachment preventing portion provided at the opening end of the inner peripheral portion of the inner grommet, and the inner grommet having high rigidity. Can be fitted to the opening, so that the connector on the other side can be attached and detached while the connector is waiting in the opening, and the function as a standby type connector is sufficient. And transmission of vibration from the vehicle body to the connector can be prevented.

According to a second aspect of the present invention, in order to solve the above-mentioned problem, in the first aspect of the present invention, the inner grommet is provided between the base end portion of the inner peripheral portion of the inner grommet and the connector stopper preventing portion. An abutment for positioning the connector on the inner peripheral portion of the inner grommet is formed.

In this case, since the connector can be securely fixed to the inner grommet by the detachment prevention portion and the abutting portion, it is possible to prevent the connector and the inner grommet from coming into contact with each other due to vibration transmitted from the vehicle body and generating abnormal noise. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a grommet according to the present invention, wherein (a) is a view showing an exploded view of the grommet, showing a connector, a wire harness, and a vehicle body panel;
(B) is a sectional view of the inner grommet.

FIG. 2 shows a connector including an exploded view of a conventional grommet;
It is a figure showing a wire harness and a body panel.

FIG. 3 is a view showing a connector, a wire harness, and a vehicle body panel including an exploded view of another conventional grommet.

[Explanation of symbols]

 21 Wire harness 22 Connector 23 Body panel (Panel member) 23a Opening 24 Grommet 25 Outer grommet 26 Inner grommet 26a Flange (Mating part) 26b Hook (Mating part) 29a Engagement projection (prevention part) 29b Butt

Claims (2)

[Claims] 1. A grommet which is fitted into an opening formed in a panel member and a connector is fitted into an inner peripheral portion thereof. An inner grommet having higher rigidity than the outer grommet and having a fitting portion fitted to the outer grommet and fitted to the opening, and an inner grommet inner peripheral portion having an open end. A grommet characterized in that a disconnection preventing portion for the connector is formed on the grommet. 2. An abutment portion for positioning the connector on the inner peripheral portion of the inner grommet at a base end portion of the inner peripheral portion of the inner grommet between the inner grommet and a stopper portion of the connector. The grommet according to claim 1.