JPH07288053A - Grommet - Google Patents

Abstract

PURPOSE:To easily remove a grommet from a panel hole. CONSTITUTION:A grommet has a soft mainbody A provided with a tube 2 to combine wire harnesses together and a resin locking member B provided with a lock member for a hole edge of a panel and jointed to the mainbody A. The lock member B is formed with a plural of annular lock blocks 6 via flexible connections 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grommet which is mainly used for electric wiring of an automobile to protect electric wires passing through a hole of a panel and to be used for soundproofing, moistureproofing and dustproofing.

[0002]

2. Description of the Related Art In FIG. 4, a soft grommet body a
Is a cylindrical tube c on the inner peripheral edge of a hollow disc-shaped base b.
And a cylindrical peripheral wall d in the outer peripheral edge in the direction opposite to the tube c, and an annular supporting portion e is continuously provided inward at the end of the peripheral wall d to form an annular recess inside the peripheral wall d. f is formed (see FIG. 5), and the outer surface of the supporting portion e is provided with a lip g that contacts the mounting panel.

On the other hand, the hard resin lock member h has a substrate k having a hole at the center at the upper edge of an annular wall j which is formed by bending the peripheral edge of a bottom wall i having a hole at the center. Flexible locking pieces l that are cut and raised outward are provided at a plurality of locations on the annular wall j, and outwardly engaging locking steps l ₁ are formed at the tips of the flexible locking pieces l.

In the above structure, the base plate k of the lock member h is placed in the annular recess f of the grommet body a when in use.
The wire harness w penetrating the hole of the panel p is inserted into the inside of the tube c, and the tape t is wound between the tube c and the wire harness w to reliably seal the two.

In this state, when the locking member h is fitted into the hole of the panel p from above in FIG. 5, the flexible locking piece l is displaced inward and the locking step l ₁ is engaged with the hole edge of the panel p. Then, at this time, the lip g is brought into close contact with the wall surface of the panel p to seal it.

[0006]

In the above configuration,
The grommet can be easily attached to the panel, but it is difficult to remove. That is, a large number of man-hours are required to unlock the plurality of flexible locking pieces 1 and the panel p, and there is a problem that they will not come off unless they are damaged.

The present invention has been made by paying attention to the above points, and a grommet including a soft grommet main body and a hard resin lock member can be easily attached to and detached from a panel. It was done.

[0008]

In order to achieve the above object, in the present invention, a soft grommet body A having a tube 2 for focusing the wire harness W and a locking member for the hole edge P ₁ of the panel P are provided. The lock member B is made of a resin and is coupled to the grommet body. The lock member B has a plurality of locking blocks 6 formed by a flexible connecting portion 7 into an annular shape.

[0009]

When the entire grommet is pressed inward from above the grommet body, the locking block is displaced in the contracting direction via the flexible connecting portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, A is a grommet body made of soft rubber, B is a lock member made of hard resin, and they are integrally combined to form a grommet X. Grommet body A
Is a cylindrical tube 2 on the inner peripheral edge of a hollow disk-shaped base 1.
Has a cylindrical peripheral wall 3 in the direction opposite to the tube 2 at the outer peripheral edge thereof, and an annular supporting portion 4 is continuously provided inward at the end of the peripheral wall 3 to form an annular recess inside the peripheral wall 3. R is formed (see FIG. 3), and an annular sealing lip 5 is provided on the outer surface of the support portion 4.

The lock member B is formed by annularly connecting four locking blocks 6 arranged at equal intervals by a flexible connecting portion 7 having a curved plate shape. The locking block 6 is provided with a support plate portion 6b projecting in the outer peripheral direction on one end surface of the box-shaped block body 6a, and a free end facing the support plate portion 6b is cut out at the cutout portion 6c of the outer peripheral surface. A flexible locking piece 6d protruding toward one side is provided, and a locking step portion 6e is formed at the free end. The flexible connecting portions 7 are integrally connected on both sides of the block body 6a.

In the above structure, the support plate 6d is engaged with the annular support 4 to connect the lock member B to the grommet body A, and the wire harness W penetrating the hole of the panel P inside the tube 2. When the lock member B is inserted into the hole of the panel by inserting the tape T between the tube 2 and the wire harness W to surely seal the two, the locking step 6e of the flexible locking piece 6d becomes Hole edge P of panel P
_The grommet X is fixed while being locked at _1, and the lip 5 is in close contact with the surface of the panel P to achieve a sealing action (see FIG. 3).

If it is necessary to remove the grommet X from the panel P at the time of repair or inspection, each grommet X is pressed inward from above the grommet main body A, whereby each locking block 6 is connected to the flexible connecting portion 7. The flexible locking piece 6d is moved so as to be contracted through the panel P.
The lock with the hole edge of is released, and it can be easily removed as it is.

[0014]

As described above, the present invention has a soft grommet body A having the tube 2 for focusing the wire harness W and a locking member for the hole edge P ₁ of the panel P, and is connected to the grommet body. Since the lock member B is made of a resin, and the lock member B is formed by annularly forming the plurality of locking blocks 6 by the flexible connecting portion 7, the grommet attached to the panel hole is a grommet. By immediately pressing inward from the top of the main body, the locked state with the panel hole can be easily released, and the grommet can be easily removed at the time of inspection or the like.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a rear view of the above combined state.

FIG. 3 is a vertical cross-sectional view of the above-mentioned use state.

FIG. 4 is an exploded perspective view of a conventional example.

FIG. 5 is a cross-sectional view of the same use state.

[Explanation of symbols]

A Grommet body B Lock member P Panel P ₁ Hole edge 6 Locking block 6b Support plate part 6d Flexible locking piece 7 Flexible connecting part

Claims (3)

[Claims] 1. A soft grommet main body having a tube for converging a wire harness, and a resin lock member having a locking member for the hole edge of the panel and coupled to the grommet main body. Grommet, characterized in that the locking block of (1) is formed in an annular shape by a flexible connecting portion. 2. The grommet according to claim 1, wherein the locking block is provided with a support plate portion that engages with the grommet body and a flexible locking piece that engages with a hole edge of the panel. 3. The grommet according to claim 1, wherein the diameter of the grommet is reduced by bending the flexible connecting portion.