JP2003111253A - Grommet for bathroom wiring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grommet for bathroom wiring capable of proper water cutoff. SOLUTION: The grommet 1 is configured such that a wire inserting cylindrical part 5 for leading out a wire such as a cable 14 or the like to the outside of a bathroom from the inside thereof is formed inside an engaging part 2 that is engaged with the inside of a through hole 10a through-formed at a bathroom wall 10. Also in the grommet, an extending cylindrical part 6 consecutively extending outside from the wire inserting cylindrical part 5 is formed, and a cable band 13 is fastened to the external periphery of the extending cylindrical part 6, thus enabling the seal of the wire such as the cable 14 or the like and the extending cylindrical part 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathroom wiring grommet through which electric wiring and cables can be passed.

[0002]

2. Description of the Related Art Conventionally, a wiring grommet 51 has a structure as shown in FIG. 14. Inside the grommet 51, there is formed a wiring insertion tube portion 51a through which a wiring or a cable can pass. As shown in FIG. 15, on the outer peripheral side, an inner wall surface fitting flange 51b that abuts on the inside of the bathroom wall 52 and an outer wall surface fitting flange 51c that hooks on the outer wall surface of the bathroom wall 52 are formed. It has become a thing. The wire insertion tube portion 5 of the grommet 51
The hole diameter of 1a is formed to be large so that the connector can be inserted therethrough. As shown in FIG. 15, the bathroom wall 5
The grommet 51 is fitted into the through hole 52a of No. 2 and the silicone 54 is coated from the inside of the bathroom to stop water. However, in the conventional grommet 51, if the hole diameter of the wire insertion tubular portion 51a is large, the grommet 51 is inserted inside. Wiring 53
Since the contact area with such as a small area, the sealing material may leak out even if the sealing material such as silicon is applied from the inside of the room, and the water cannot be firmly stopped after the construction. There was a problem that it was difficult to reliably stop the water because it moved inside the.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above-mentioned conventional problems, and an object thereof is to provide a grommet for bathroom wiring capable of reliably stopping water, and a first summary thereof. For bathroom wiring, inside the fitting part that is fitted into the through hole that is formed through the wall of the bathroom, there is a wire insertion tube part for guiding wires such as electric wiring and cables from the bathroom to the outside of the bathroom. In the grommet, an extension tube portion that extends outside the bathroom is formed continuously with the wiring insertion tube portion, and a cable band is fastened to the outer periphery of the extension tube portion,
That is, the wiring and the extending tubular portion can be sealed. In addition, the second gist is that a wiring insertion tube portion is formed inside the fitting portion that is fitted into the through hole that is formed through the bathroom wall so as to guide the wiring such as the electric wiring and the cable from the bathroom to the outside of the bathroom. In the bathroom wiring grommet formed as described above, an extension tubular portion extending outside the bathroom is formed continuously with the wiring insertion tubular portion, and at least a part of the inner diameter of the extension tubular portion is larger than the inner diameter of the wiring insertion tubular portion. It was set narrowly. A third gist is that a shrinkable concavo-convex wrinkle is formed on at least a part of the extending tubular portion. A fourth gist is that the wrinkle convex portion is formed in a shape having different rising lengths and falling lengths.

[0004]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional configuration diagram of a grommet 1 for bathroom wiring, and FIG. 2 is an enlarged view of a portion indicated by a circle in FIG.

The grommet 1 has a fitting portion 2 formed on the outer peripheral side, and a wiring insertion tube portion 5 is formed inside the fitting portion 2 with a gap S interposed therebetween.
The inner wall surface fitting flange 3 and the outer wall surface fitting flange 4 are integrally formed in a protruding shape. In addition, the wiring insertion tube portion 5
From which the extending tubular portion 6 is integrally formed in a protruding shape, and the wiring insertion tubular portion 5 and the fitting portion 2 are integrally connected in the vicinity of the outer wall surface fitting flange 4 with a connecting portion 7 interposed. It has a special structure. In the gap S, on the inner wall surface fitting flange 3 side, a recessed engagement groove 3a is formed.

FIG. 3 is a mounting state diagram in which the grommet 1 is fitted from the inside of the bathroom into the through hole 10a formed through the bathroom wall 10. In addition, in the grommet 1 of FIG. 3, the tip end of the extending tubular portion 6 has a reduced diameter, and the wrinkle 12 is formed so as to be contractible. In the fitted state of the grommet 1, the inner wall surface fitting flange 3 of the grommet 1 is in contact with the bathroom inner wall surface 10b of the bathroom wall 10, and the outer wall surface fitting flange 4 of the bathroom outer wall surface 10c of the bathroom wall 10. Is caught.

In the grommet 1 of this example, the connecting portion 7
Is integrally formed, and in the fitted state, the outer wall surface fitting flange 4 is firmly caught on the bathroom outer wall surface 10c,
It becomes difficult for the grommet 1 to come off from the through hole 10a. Further, as shown in FIG. 3, the gap S of the grommet 1 from inside the bathroom
When the fitting member 11 made of hard resin or the like is inserted into the inside, the ridge portion 11a formed on the outer periphery of the fitting member 11 is inserted.
Fit into the engaging groove 3a, the fitting member 11 is inserted into the gap S, and the fitting portion 2 of the grommet 1 does not shrink in the through hole 10a. It is possible to reliably prevent the removal of No. 1.

FIG. 4 shows a grommet 1 having wrinkles 12 formed thereon.
4 is a perspective view of the same, and in FIG. 4, a deformation absorbing groove 8 for absorbing deformation is formed in the fitting portion 2. By forming the wrinkles 12 at the tip of the extending tube portion 6 as described above, even when the large connector 16 is connected to the tip of the cable 14 in which the wiring 15 is incorporated,
It is possible to satisfactorily pass such a large connector 16.

The cross-sectional view of FIG. 5 is a state diagram in which the cable 14 having the connector 16 is led out from the indoor side to the outdoor side. Finally, the cable band 13 is provided on the outer circumference of the extending tubular portion 6. By wrapping and tightening,
The extension tube portion 6 can be surely brought into contact with the outer circumference of the cable 14, and even if the seal material C such as silicon is injected into the wire insertion tube portion 5 of the grommet from the indoor side after that, the seal material C is not removed. It stops at the portion tightened by the cable band 13, does not leak to the outside, and the sealing material C can reliably stop water.

FIG. 5 exemplifies the case where the fitting member 11 is not used, and good water stopping performance can be obtained without using the fitting member 11. That is, if the deformation absorption groove 8 is formed, the through hole 10a
When fitted into the inside, the deformation absorbing groove 8 contracts and the fitting portion 2 of the grommet is fitted into the through hole 10a satisfactorily,
After that, the diameter of the fitting portion 2 is favorably expanded, and the through hole 10
This makes it possible to prevent the grommet 1 from coming off from a. The wrinkles 12 described above may have various shapes. For example, as shown in the enlarged view of the main part of FIG. 6, a pair of wrinkle protrusions 12, 12 may be formed so as to face each other.

In FIG. 7, the pair of wrinkle protrusions 12, 12 is
FIG. 11 is a state diagram when the connector 16 is passed through the extended tubular portion 6 in which the wrinkle convex portions 12 and 12 extend to open the distal end side of the extended tubular portion 6 when the connector 16 passes.
The connector 16 can be satisfactorily passed, and after the connector 16 is passed, the tip end of the extending tubular portion 6 is contracted via the wrinkle convex portions 12 and 12 and is brought into a good contact with the outer circumference of the cable 14. .

After that, as shown in FIG.
By tightening the cable band 13 on the outer periphery of the extension tube portion 6 in a state where the extension tube portions 2 and 12 are bent in the circumferential direction, the wrinkle convex portions 12 and 12 exert a force to press the extension tube portion 6 inward. Thus, the extending tubular portion 6 is more firmly brought into close contact with the outer circumference of the cable 14.

FIG. 10 shows wrinkle convex portions 12, 12, 1
It shows an example in which 2, 12 are formed in a cross shape in four directions. Further, FIG. 11 shows four-sided wrinkle convex portions 12, 12, 1.
This is an example in which a space between 2 and 12 is curved to form a substantially circular hole inside.

Further, as shown in FIG. 12, wrinkle protrusions 12 and 12 that are bent in a wave shape to the outer peripheral side may be formed. Each wrinkle protrusion 12 in FIG. 12 has a rising piece 12a on the outer peripheral side. The rising length a of the falling piece 1 on the inner peripheral side is
It is set to be longer than the falling length b of 2b, and each wrinkle convex portion 12 is formed in a shape that clings to the outer circumference of the extending tubular portion 6. Further, in FIG. 13, a large number of wrinkle convex portions 12 formed by such rising pieces 12a and falling pieces 12b are formed in the circumferential direction.

By forming the wrinkle convex portion 12 having a shape clinging to the outer periphery of the extension tube portion 6 as described above, the extension tube portion 6 is more firmly fixed to the cable when tightened with the cable band 13. Can be closely attached to the outer circumference of 14,
Further, even when the cable band 13 is not used, the extension tube portion 6 is in good contact with the outer circumference of the cable 14, and the leakage of the sealing material C can be eliminated.

In the grommet 1 of the present embodiment, the tip of the extension tube portion 6 is reduced in diameter, and the wrinkle 12 is formed so as to be contractible. However, the extension tube is not limited to the tip. Part 6
The inner diameter is reduced or the extended tubular portion 6
By forming the wrinkles 12 in the middle or the whole of the above, it is possible to make the extending tubular portion 6 satisfactorily contact the outer circumference of the cable 14 and eliminate the leakage of the sealing material C.

[0017]

As described above, according to the present invention, a wiring insertion tube portion for guiding wiring such as electric wiring and cables from the inside of the bathroom to the outside of the bathroom is provided inside the fitting portion fitted into the through hole formed through the bathroom wall. In the formed bathroom wiring grommet, the extension tubular portion that extends outside the bathroom is formed continuously with the wiring insertion tubular portion, and the cable band is fastened to the outer periphery of the extension tubular portion to separate the wiring and the extension tubular portion. Since it is configured so that it can be sealed, the cable band is used for sealing, so the wiring does not come off the grommet, and even if the sealing material is injected from the indoor side, it does not stick out to the outside, ensuring It will be able to stop the water.

Further, inside the fitting portion fitted into the through hole formed through the wall of the bathroom, there is formed a wire insertion tube portion for guiding wires such as electric wires and cables from the inside of the bathroom to the outside of the bathroom. In bathroom wiring grommets,
By forming an extension tube part that extends outside the bathroom in a continuous manner with the wire insertion tube part and setting the inner diameter of at least part of the extension tube part to be smaller than the inner diameter of the wire insertion tube part, it becomes narrower toward the outside of the bathroom. As a result, at least a part of the extending tubular portion comes into contact with the outer circumference of the wiring, the leakage of the sealing material injected from the indoor side is reduced, and good water stopping can be achieved.

Further, since the wrinkles are formed by forming the wrinkles having the concavo-convex shape capable of contracting on at least a part of the extending tubular portion, it is easy for a large connector to pass therethrough, and the work can be performed well. After passing through the connector, the extending tube portion contracts through the wrinkles and comes into contact with the outer circumference of the wiring, so that the sealing material can be easily filled from the indoor side and the water can be easily stopped.

Further, since the wrinkle convex portion is formed in a shape having different rising lengths and falling lengths, the wrinkles cling to the outer circumference of the wiring, so that the tip of the cylindrical portion extending to the outer circumference of the wiring. Becomes a close contact state, the gap through which the sealing material leaks is narrowed, and the sealing material can be satisfactorily filled and water can be surely stopped. Further, even when the cable band is fastened to the outer circumference, there is an effect that the cable band is easily fastened.

[Brief description of drawings]

FIG. 1 is a cross-sectional configuration diagram of a grommet.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is an enlarged sectional view showing a state in which a grommet is attached to a bathroom wall and a fitting member is inserted.

FIG. 4 is an exploded perspective view of a cable having a wrinkle-formed grommet and a connector at its tip.

FIG. 5 is a cross-sectional configuration diagram showing a state in which a cable is passed and tightened with a cable band.

FIG. 6 is a schematic configuration diagram of a main part of an extending tubular portion having a pair of wrinkle convex portions.

FIG. 7 is a state diagram in which the connector is passed through the extending cylindrical portion having the wrinkle convex portion of FIG.

FIG. 8 is an explanatory diagram showing a state in which the extension tube portion is in contact with the outer circumference of the cable after passing through the connector.

FIG. 9 is an explanatory view showing a state in which a cable band is further fastened to the outer circumference of the extending tubular portion.

FIG. 10 is a schematic configuration diagram showing a modified example of a wrinkle convex portion.

FIG. 11 is a schematic configuration diagram showing a further modified example of the wrinkle convex portion.

FIG. 12 is a schematic configuration diagram showing a further modified example of the wrinkle convex portion.

FIG. 13 is a schematic configuration diagram showing a further modified example of the wrinkle convex portion.

FIG. 14 is a partially cutaway perspective view of a conventional grommet.

15 is a cutaway perspective view showing the state where the grommet shown in FIG. 14 is attached to a bathroom wall and sealed with silicone.

[Explanation of symbols]

1 Grommet 2 Fitting part 3 Inner wall fitting flange 3a Engagement groove 4 Outer wall fitting flange 5 Wire insertion tube 6 Extension tube part 7 connection 8 Deformation absorption groove 12 wrinkles (wrinkle convex part) 12a rising piece 12b falling piece 13 cable bands 14 cables 16 connectors S gap

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4E352 AA02 AA03 AA04 AA05 AA16                       BB10 BB19 CC32 CC34 DD05                       DR12 DR32 DR34 DR38 GG04                 5G333 AA09 AB03 CC03 CC04 EA02                 5G363 AA01 BA01 CA05 CB08 CB12                       DA16

Claims (4)

[Claims] 1. A wiring insertion tube portion for guiding wiring such as electric wiring or a cable from the inside of the bathroom to the outside of the bathroom is formed inside the fitting portion fitted into the through hole formed through the bathroom wall. In the bathroom wiring grommet, an extension tubular portion extending outside the bathroom is formed continuously with the wiring insertion tubular portion, and a cable band is fastened to the outer periphery of the extension tubular portion.
A bathroom wiring grommet characterized in that the wiring and the extending tubular portion can be sealed. 2. A wiring insertion tubular portion for guiding wiring such as electric wiring or a cable from the inside of the bathroom to the outside of the bathroom is formed inside the fitting portion fitted into the through hole formed through the bathroom wall. In the bathroom wiring grommet, an extension tubular portion extending outside the bathroom is formed continuously with the wiring insertion tubular portion, and an inner diameter of at least a part of the extension tubular portion is set narrower than an inner diameter of the wiring insertion tubular portion. Grommet for bathroom wiring, which is characterized by that. 3. The grommet for bathroom wiring according to claim 1 or 2, wherein a wrinkle having a concavo-convex shape that can contract is formed on at least a part of the extending tubular portion. 4. The bathroom wiring grommet according to claim 3, wherein the convex portion of the wrinkle is formed in a shape having different rising lengths and falling lengths.