JPH0719066Y2 - Grommet - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a grommet mainly used for electric wiring of an automobile to protect electric wires passing through a hole in a panel and to be used for soundproofing, moistureproofing, dustproofing and the like. It is a thing.

[Conventional technology]

In FIG. 8, the soft grommet body A has a cylindrical tube 2 provided on the inner peripheral edge of a hollow disk-shaped base 1, and a wire that penetrates through the hole of the panel P and is supported by the grommet inside the tube 2. The harness W is inserted.

Then, the tape 3 is wrapped around the wire harness W and the tube 2, and a reliable seal is provided between the two.

A cylindrical peripheral wall 4 is continuously provided in the outer peripheral edge of the base 1 in the direction opposite to the tube 2, and an annular supporting portion 5 is provided at an end of the peripheral wall 4 toward the inside so that an annular concave portion is provided inside the peripheral wall 4. 6 is formed, and lips 7 and 8 that come into contact with the panel P are provided on the outer surface of the support portion 5.

On the other hand, in the hard resin lock member B, a base plate 11 having a hole in the center is provided at the upper edge of an annular wall 10 which is formed by curving the peripheral edge of a bottom wall 9 having a hole in the center. Locking pieces 12 are provided by cutting and bending outward at a plurality of places of 10, and locking step portions 12a are formed on the outer wall surface at the tip of the locking pieces 12.

The locking piece 12 has flexibility, and the locking step portion 12a is engaged with the hole of the panel P in a state where the locking piece 12 is bent inside.

In the space between the bottom wall 9 of the resin lock member B and the substrate 11, a pair of wire fixing members 13 is fixed to the wire harness W by winding a tape 14. The electric wire fixing member 13 has projections 13a for preventing the tape from falling off at both ends, and stoppers 13b at the middle portion.

Substrate 11 of resin lock member B fitted in the hole of panel P
The annular recess 6 of the grommet body A is fitted to the lip 7
And 8 adhere to the wall surface of the panel P to seal the panel P.

Thus, the gap between the panel P and the wire harness W is sealed so that rainwater or the like does not enter, and the wire harness W is supported by the tube 2 without being damaged.

In this state, when an external force in the direction of the arrow G is applied to the wire harness W, the wire harness W moves by being pulled by the external force, but the stopper 13b comes into contact with the bottom wall 9 and the wire harness W is further moved. Be blocked.

However, as shown in FIG. 9, when an external force is applied to the wire harness W in the direction of the arrow F, the wire harness W is pulled outward and largely moves until the stopper 13b comes into contact with the board 11. Along with this, there is a drawback that the tube 2 or the base portion 1 moves and the sealing performance of the lips 7, 8 deteriorates.

[Problems to be solved by the device]

The present invention has been made by paying attention to the above-mentioned points, in which the wire harness is prevented from moving in both axial directions through the electric wire fixing member, thereby ensuring the sealing performance of the grommet body. Is.

[Means for Solving the Problems]

In order to achieve the above object, in the present invention, a hard resin made by providing an annular locking plate portion on an upper edge of an annular wall provided on a bottom wall having a hole in the center and an engaging piece for a panel. A grommet consisting of a combination of a locking member, a ring-shaped recess fitted to the locking plate portion on the outer peripheral edge of the base portion, and a tube for inserting an electric wire on the inner peripheral edge of the base portion, the grommet comprising: The wire fixing member fixed to the harness is formed separately from the lock member, and the stopper portion provided on the wire fixing member is immovably engaged with the bottom wall portion of the lock member in the axial direction of the wire harness. It is characterized by being made.

〔Example〕

1 to 3 show an embodiment of the present invention, in which the same structural parts as those of the conventional example are designated by the same reference numerals.

The pair of wire fixing members 13A have winding tape drop-out preventing projections 13a at both ends, and a stopper 1 in the middle.
3b, the stopper 13b has a flexible locking piece 13c at the end along the axial direction of the wire harness W, and the flexible locking piece 13c is directed upward in the drawing. A locking hole 9a into which the stop piece 13c is inserted is formed.

The pair of wire fixing members 13A are fixed to the wire harness W by the tape 14, and the stopper 13b abuts on the outer surface of the bottom wall 9 of the lock member B so that the flexible locking piece 13c is pushed from the outside to the bottom wall 9.
Then, the locking projection 13c ₁ is engaged with the inner edge of the locking hole 9a.

Therefore, the main body of the stopper 13b blocks the movement of the wire harness W in the arrow F direction, and conversely the flexible locking piece 13c blocks the movement of the wire harness W in the arrow G direction.

In the embodiment of FIG. 3 (b), the wire fixing member 13A 'is bent so as to fit the bent wire harness W.

In the embodiment shown in FIG. 4, the stopper 13b of the wire fixing member 13B is used.
Has a flexible locking piece 13d directed downward in the drawing, and the stopper 13b abuts on the inner surface of the bottom wall 9 of the lock member to allow the flexible locking piece 13d to enter the locking hole 9a from the inside. The locking protrusion 13d ₁ is engaged with the outer edge of the locking hole 9a.

In the embodiment shown in FIG. 5, the stopper 13b of the wire fixing member 13C is used.
Movement has a locking projection 13e on the outer end, of the stopper 13b moiety by engaged into the retaining hole 9b ₁ of the flexible wall 9b of the inner provided on periphery of the bottom wall 9 in the vertical direction of the wire harness W Is being blocked.

In the embodiment shown in FIG. 6, the stopper 13 of the wire fixing member 13D is used.
The b'is U-shaped and has a locking projection 13e inside the free end, and the stopper 13b 'is a flexible wall 9 provided on the inner circumference of the bottom wall 9.
For Figure 5 with respect to the locking hole 9b ₁ b and the reverse direction it is engageably inserted.

In the embodiment shown in FIG. 7, the stopper 13 of the wire fixing member 13E is used.
b ″ is a flexible frame and has a locking hole 13f.
The locking portion 9c of the bottom wall 9 is engaged with f.

〔effect〕

Since the present invention is configured as described above, the wire fixing member, which is separate from the lock member, can be easily fixed to the wire harness in advance, and the wire fixing member can be engaged with the lock member. As a result, the wire harness is prevented from immediately moving in the axial direction and the sealing performance of the grommet body is not impaired, and the mounting workability is good.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a perspective view of a lock member in the same as above, FIG. 3 (a) is a perspective view of a wire fixing member in the same as above, and FIG. A perspective view showing a modified example of the wire fixing member in the above, FIGS. 4 to 7 are cross-sectional views of a main part of another embodiment, FIG. 8 is a cross-sectional view of a conventional example, and FIG. It is sectional drawing which shows a state. A ... Soft grommet body, B ... Hard resin locking member, 1 ... Base part, 2 ... Tube, 6 ... Annular recess, 9 ... Bottom wall, 13A, 13A ', 13B, 13C, 13D, 13E ... Wire fixing member , 13b, 1
3b ′, 13b ″… Stoppers.

Claims (2)

[Scope of utility model registration request] 1. A hard resin lock member having an annular locking plate portion at an upper edge of an annular wall provided at a bottom wall having a hole in the center and an engaging piece for a panel, and an outer portion of a base portion. In a grommet consisting of a combination of a soft grommet body having an annular recess fitted to the locking plate portion at the peripheral edge and a wire insertion tube at the inner peripheral edge of the base portion, an electric wire fixing member fixed to a wire harness is provided. The lock member is formed separately from the lock member, and a stopper portion provided on the wire fixing member is engaged with a bottom wall portion of the lock member so as to be immovable in the axial direction of the wire harness. Grommet. 2. An electric wire fixing member is provided with projections for preventing the winding tape from falling off and stoppers are provided at an intermediate portion, and a flexible locking piece along the axial direction of the wire harness is provided at an end portion of the stopper. The grommet according to claim 1, further comprising: a lock hole formed in the bottom wall of the lock member, the lock hole into which the flexible lock piece is inserted.