JPH036982Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a grommet for protecting a flat wire when the flat wire is passed through a wall, etc., and also for waterproofing and dustproofing.

[Conventional technology]

When installing a wire harness (wire assembly for automobiles), when the wires are passed through walls such as the car body or panels, conventionally, rubber grommets are used to protect the wires and make the penetration part waterproof and dustproof. There is. For many years, wire harnesses have used a method of converging multiple wires by winding them with tape, etc., but recently, flat wires have been used to arrange them in a two-dimensional manner, making the entire wire thinner and thinner. Therefore, there is a need for the development of a grommet that can adequately protect flat wires with low strength.

[Problem that the invention attempts to solve]

The present invention was developed in response to the above-mentioned requirements, and the purpose is to provide a grommet that is easy to assemble and install into a hole in a wall, protects flat wires, and is reliably waterproof and dustproof. do.

[Means for solving problems]

In order to meet the above requirements, in this invention,
A pair of lock claws for an opening in a wall or the like is provided protruding from a mounting surface, and a housing space for a flat wire is continuously formed between the pair of lock claws, and an intermediate portion of the flat wire can be inserted into the housing space. The grommet body is composed of a hard synthetic resin grommet body configured to allow the flat wire to be taken out from between the pair of lock claws, and a clamping body, and the flat wire is bent and clamped by the grommet body and the clamping body through a sealing member, A configuration is adopted in which a sealing member is provided surrounding the pair of lock claws on the mounting surface.

〔Example〕

Hereinafter, the grommet A of the present invention will be explained with reference to the drawings. As shown in FIG. The flat wire 4 is connected to a sealing member 3 made of an elastic material such as rubber.
3'.

The clamping body 2 is plate-shaped, and a thin wire mounting plate 2b is formed with a step on the front descending slope 2a on the front half, and locking protrusions 2c are provided on both sides of the rear half. It is being

The grommet body 1 has the above-mentioned inclined surface 2 on its lower side.
has an inclined surface 1a (see FIG. 2) corresponding to a,
It has a fitting frame 1b on both sides for fitting together the clamping body 2, and the locking protrusion 2c is provided on the frame wall.
A corresponding recess or hole 1c is provided which engages the. Further, the grommet body 1 has a positioning plate 5 protruding from its upper surface for installation in a hole in a wall, which will be described later, and a locking claw 6 protruding upward from the inner edge of the fitting frame 1b for locking into the hole. It is set up.

The above-mentioned inclined surfaces 1a and 2a constitute a clamping surface for the flat wire 4, and when the grommet main body 1 and the clamping body 2 are combined, there is a gap slightly larger than the thickness t of the flat wire 4 at the opposing portions. to form. In the grommet body 1, a housing space S for the flat wire 4 is formed continuously between the pair of locking claws 6 and extending toward the lower part of the inclined surface 1a.

[Effect]

Assemble grommet A as follows.

Inclined surface 1 of grommet body 1 and clamping body 2
Seal members 3 and 3' are adhesively fixed to a and 2a, respectively.

Next, after placing the flat wire 4 on the wire mounting plate 2b of the clamping body 2, the clamping body 2 is placed on the fitting frames 1b, 1.
b, and the main body 1 and the clamping body 2 are locked by the locking protrusion 2c and the corresponding recess or hole 1c.

As a result, both the front and back surfaces of the flat wire 4 are sandwiched between the inclined surfaces 1a and 2a via the seal members 3 and 3', as shown in FIG.

3 and 4 show how the assembled grommet A is attached to the wall. In this case, the wall 7 has a rectangular notch 7a at its side edge, and a positioning hole 7b is bored at its rear edge.

In this case, after gluing and fixing the U-shaped sealing member 8 to the upper surface of the grommet body 1, aligning the positioning plate 5 with the positioning hole 7b and fitting the grommet A into the notch 7a, the lock claws 6 on both sides Each engages with the side edge of the notch 7a, and the grommet A is locked into the notch 7a.

FIG. 6 shows a case where a rectangular hole 7a' is opened in the wall 7, and if a ring-shaped seal member 8' is used, it can be attached in exactly the same manner as in FIGS. 3 and 4.

As is clear from this embodiment, since the flat wire 4 is sandwiched on both sides by the elastic sealing members 3 and 3', the flat wire 4 is securely held without tearing its insulation coating or damaging the internal core wire. protected.

In addition, since the sealing members 3 and 3' elastically deform to the unevenness between each line 4a of the flat wire 4 and tightly seal, a reliable waterproof effect can be obtained.
This effect is further enhanced by applying adhesive to the contact surfaces of the sealing members 3, 3' with the flat wire.

The gap caused by the difference in width between the flat wire 4 and the inclined surfaces 1a and 2a does not cause any problem in waterproofing because the seal members 3 and 3' are in close contact with each other. If the sealing members 8, 8' are made of an elastic material, the gaps caused by the unevenness will be closed and the seal will be reliably waterproof.

〔Example〕

FIG. 7 shows another embodiment of the grommet, in which the front and back sides of the flat wire 4 are clamped at positions shifted from each other.

That is, the main body 9 of the grommet B has an inclined surface 9a and lock claws 10 protruding from both sides thereof, and a wire mounting plate 9c is connected to the inclined surface 9a through a vertical wall 9b.
A clamping body 11 is connected to one side edge of the wire mounting plate 9c by a hinge 12 so as to be openable and closable. The clamping body 11 has an inclined surface 11a parallel to the inclined surface 9a on its lower surface, and a positioning plate 13 is provided protruding from its upper surface as in FIG. 1.
In this embodiment, a housing space for the flat wire 4 is continuously formed between the pair of lock claws 10 on the wire mounting plate 9c. In addition, the clamping body 11
A lock claw 11b is provided protruding from the free end side of the wire mounting plate 9c, and is engaged with a notch 9d formed in the wire mounting plate 9c to be locked.

Also in the case of this grommet B, the inclined surfaces 9a, 1
After adhesively fixing the sealing members 3 and 3' to each of the wires 1a, the flat wire 4 is placed on the wire mounting plate 9c and the clamping body 11 is closed.
engages with the notch 9d, the main body 9 and the clamping body 11 are locked, and the flat wire 4 is fixed to the main body 9 at the same time. Furthermore, the method of attachment to the notch 7a of the wall 7 can be carried out in exactly the same manner as shown in FIG. 3 (see FIG. 8).

Incidentally, the inclined surfaces 9a, 11 of the main body 9 and the clamping body 11
Although the clamping positions of the flat wires 4 and 4 are shifted, as is clear from FIG. There is no need to worry about water leaking from one side to the other.

Therefore, the protection, waterproofing and dustproofing effects of the flat wire 4 are the same as those of the grommet A in FIG. In this case, the main body 9 and the clamping body 11
Since it is integrally formed by the hinge 12, the number of parts is reduced, and the flat wire 4 can be fixed by the clamping body 1.
This can be accomplished by simply closing 1.

FIG. 9 shows another embodiment of the grommet. That is, the grommet C has corrugated concavities and convexities 14 corresponding to the surface shape of the flat wire 4 on the inclined surfaces 9a and 11a of the grommet B in FIG. 7, respectively. This grommet C has an inclined surface 9a,
Used when the width of the flat wire is the same as that of the flat wire. In this case, since the insulation coating of the flat wire is elastically deformed, the sealing members 3, 3' can be omitted.

[Effect of idea]

As described above, the present invention includes a pair of locking claws protruding from the mounting surface for openings in a wall, etc., a space for accommodating the flat wire continuous between the pair of locking claws, and a space for accommodating the flat wire in the accommodating space. The grommet body is made of a hard synthetic resin, and the middle part of the grommet can be inserted into the grommet body, and the flat wire can be taken out from between the pair of lock claws, and a clamping body. Since the flat wire is bent and held, and a sealing member is provided surrounding the pair of locking claws on the mounting surface, it can be easily attached to an opening in a wall or the like via the pair of locking claws. At the same time, the sealing member provided surrounding the locking pawl can seal the gap with the mounting part such as a wall, and the middle part of the flat wire can be immediately inserted into the continuous accommodation space between the locking pawls, so the flat wire can be grommeted from the end. There is no need to insert the grommet into the grommet, and since the flat wire can be pulled out from between the pair of locking claws to the other side of the mounting part such as a wall in the installed state, the grommet can be constructed compactly.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the grommet of the present invention in a separated state, Fig. 2 is a sectional view taken along the line - - of Fig. 1, and Figs. 3 and 4 respectively show how to install it on a wall with a notch. FIG. 5 is a sectional view taken along the line V-V in FIG. 3, and FIG. 6 is an explanatory view of how to attach it to a wall having a hole. FIG. 7 is a separated perspective view showing another embodiment of the grommet of the present invention;
The figure is an explanatory diagram of how to install it on a wall with a notch,
9 and 10 are perspective views showing other embodiments of the grommet of the present invention, respectively. A, B, C, D... Grommet for flat wire, 1, 9... Grommet body, 2, 11... Holding body, 3, 3'... Seal member, 4... Flat wire, 6, 10... Lock claw , 5, 13... Positioning plate, 7... Wall, 2a... Front descending slope (clamping surface), 1a... Inclined surface (clamping surface).

Claims (1)

[Scope of utility model registration request] A pair of lock claws for an opening in a wall or the like is provided protruding from a mounting surface, and a housing space for a flat wire is continuously formed between the pair of lock claws, and an intermediate portion of the flat wire can be inserted into the housing space. The grommet body is composed of a hard synthetic resin grommet body configured to allow the flat wire to be taken out from between the pair of lock claws, and a clamping body, and the flat wire is bent and clamped by the grommet body and the clamping body through a sealing member, A grommet for a flat wire, characterized in that a sealing member is provided surrounding the pair of locking claws on the mounting surface.