JPH0241785Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a wiring grommet that seals between a cable inserted into a hole in a panel of a vehicle, etc. and the hole. [Prior art and problems] Conventional grommet technology that seals the space between a cable inserted into a panel hole of a vehicle, etc. and the hole and supports the cable so as not to damage it is, for example, the technology described in Japanese Utility Model Application Publication No. 155783/1983. .

That is, in FIG. 5, a soft grommet body A is provided with a tube 2 on the circumferential edge of a hollow disc-shaped base 1, and an annular lip 4 on the circumferential surface of the tube 2 that contacts the cable 3 elastically. are provided in multiple locations.

A tape 5 is then wrapped around the tube 2 and the cable 3 to ensure a seal between them.

A cylindrical peripheral wall 6 is connected to the outer peripheral edge of the base 1 on the side opposite to the tube 2, and an annular support part 7 is provided at the end of the peripheral wall 6 to protrude inward, and a hard resin lock is provided at the end of the peripheral wall 6. An engaging portion 9 having a stepped portion 8 that engages with member B and an annular lip 10 that contacts panel P are provided (see FIG. 6).

A base plate 12 of a resin locking member B is fitted into an annular recess 11 formed by the base 1 and the peripheral wall 6 and is locked by the support 7 .

The resin locking member B has a cylindrical peripheral wall 13 connected to the side surface of the substrate 12, and the end of the peripheral wall 13 is bent toward the center to form a bottom wall 14.

Further, locking pieces 15 are provided at a plurality of locations on the peripheral wall 13 in an outwardly cut-and-raised manner and fit into cable insertion holes of the panel P.

The locking piece 15 fits into the cable insertion hole of the panel P, and the grommet body A engages with the resin lock B.
The lip 10 of the grommet main body A comes into close contact with the panel P and seals the panel P.

As described above, the space between the panel P and the cable 3 is sealed, preventing rainwater from entering, and the cable 3 is supported by the tube 2 without being damaged. However, as shown in FIG. Another disadvantage is that when an external force F acts on the cable, the lip 10 is pulled in the direction of the arrow 16, and the support part 7 tends to come off from the base plate 12 of the resin lock member B.

The present invention provides a grommet in which the grommet body A does not come off from the substrate 12 even when an external force F acts on the cable 2.

[Means for solving problems]

The present invention provides a cable insertion tube on one of the inner peripheral edges of a hollow disk-shaped base, a peripheral wall on the other outer peripheral edge, and a first locking part that projects inward at the end of the peripheral wall. A soft grommet body having a fitting recess formed therein and a lip at the end thereof, and a locking member having a substrate that fits into the fitting recess and is locked in a cable insertion hole of a panel or the like. A grommet made of a hard resin locking member having a cylindrical wall and a cylindrical wall on the inner peripheral edge of the base plate on the opposite side of the tube, and a second support that engages with the base plate on the outer wall surface of the cylindrical wall. A portion is provided to protrude in opposition to the first support portion.

[Effect]

With the above configuration, the peripheral part and inner peripheral part of the substrate of the resin locking member fitted into the fitting recess are respectively locked by the first support part and the second support part, and the second support part has a cylindrical shape. It will not come off the board because it is blocked by the deformation cable in the wall.

Moreover, even if an external force is applied to pull the cable, the second support part is connected to the base part through the cylindrical wall, so that the state in which the resin lock member is held between the substrates is maintained.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. Note that the same parts as in the conventional example are given the same reference numerals. Second
In the figure, a soft grommet main body C has a tube 2 provided on the circumferential edge of a hollow disk-shaped base 1, a cylindrical circumferential wall 6 connected to the outer circumferential edge of the base 1 on the opposite side from the tube 2, and a circumferential wall An annular first support part 7 is provided at the end of the support part 6 to project inward, and an annular lip 10 is provided on the outer wall surface of the first support part 7, similar to the conventional example.

Reference numeral 17 denotes a cylindrical wall provided near the inner peripheral edge of the base 1 in the opposite direction to the tube 2. At the end of the cylindrical wall 17, a cable holding part 18 and a second support part 19 are provided on the inner wall surface and the outer wall surface, respectively. It is provided protrudingly at a position facing the first support part.

The base plate 12 of the resin locking member B shown in FIGS. 3 and 4 is fitted into the annular recess 11 formed inside the base 1, the peripheral wall 6, and the first support portion.

Although the resin locking member B is divided into two parts, the engaging pieces 12A and 12B provided on the base plate 12 are fitted and assembled together, and the base plate 12 has a hollow disc shape (Fig. 4). reference).

A cylindrical peripheral wall 13 is connected to the side surface of the substrate 12,
The end portion of the peripheral wall 13 is bent toward the center to form a bottom wall 14, and locking pieces 15 are provided at a plurality of locations on the peripheral wall 13, as in the conventional example.

To assemble the grommet constructed as described above, as shown in FIG. 1, the cable 3 is inserted into the tube 2 of the soft grommet main body C, and the tube 2 and cable 3 are wrapped with tape 5.

Next, the base plate 12 of the hard resin locking member B is fitted into the annular recess 11 of the grommet body C.

At this time, the cable holding part 18 at the tip of the cylindrical wall 17 that comes into contact with the board 12 presses against the inner peripheral surface of the board 12 because it comes into pressure contact with the cable 3, and the second support part 19 maintains the state in which the board 12 is locked. do.

Next, when the locking piece 15 of the resin locking member B is fitted into the hole of the panel P, the grommet is locked to the panel P by the elastic force of the locking piece 15, and the lip 1
0 seals panel P.

Therefore, even if an external force that pulls the cable 3 is applied to the grommet in the direction of arrow F, the outside and inside of the board 12 are retained by the first support part 7 and the second support part 19, and the tube 2 is held together with the cable 3. Even if the tube 2 is pulled in the direction of the arrow F, the cylindrical wall 1 remains in the tube 2.
The second locking portion 19 connected to the substrate 12 via the
Since the first locking portion 7 is strongly locked, deformation and detachment of the first locking portion 7 as shown in FIG. 6 does not occur.

Therefore, the resin lock member B will not fall off from the grommet body C.

Moreover, since the lip 10 does not lift up as shown in FIG. 6, the grommet does not lose its sealing ability even when an external force is applied.

〔effect〕

In the present invention, since the resin locking member is strongly locked by the second locking part, the grommet main body is prevented from deforming and separating from the first locking part due to an external force pulling the cable.

Therefore, even if an external force is applied to the cable, the grommet main body will not be disassembled, and since the first locking portion will not be deformed, the sealing ability of the grommet main body will not be reduced.

[Brief explanation of drawings]

Figures 1 to 4 show embodiments of the present invention;
The figure is a vertical cross-sectional view of the grommet incorporated in the panel, Figure 2 is a vertical cross-sectional view of the grommet body, Figure 3 is a vertical cross-sectional view of the resin lock member, and Figure 4 is a longitudinal cross-sectional view of the resin lock member divided into two parts. FIG. 5 is a longitudinal cross-sectional view of a grommet incorporated in a panel in a conventional example, and FIG. 6 is a longitudinal cross-sectional view of a main part showing a state in which an external force is applied to the same grommet. B...Resin lock member, C...Grommet body, P...Panel, 1 base, 2...Tube, 3
...Cable, 5...Tape, 6...Peripheral wall, 7...
...First locking portion, 10...Rip, 11...Annular recess, 12...Substrate, 13...Peripheral wall, 14...Bottom wall, 15...Locking piece, 17...Cylindrical wall, 18... …
Cable holding part, 19... second support part.

Claims (1)

[Scope of utility model registration request] A cable insertion tube is connected to one of the inner peripheral edges of the hollow disk-shaped base, a peripheral wall is connected to the other peripheral edge, and a first support part is provided at the end of the peripheral wall to protrude inward. a soft grommet body having a fitting recess formed therein and a lip at the end;
A grommet comprising a hard resin locking member having a board that fits into the fitting recess and a locking piece that is locked in a cable insertion hole of a panel, etc. A grommet characterized in that a cylindrical wall is provided on the opposite side, and a second support part that engages with the substrate is protruded from the outer wall surface of the cylindrical wall so as to face the first support part.