JPH0511089Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention secures two equipment parts having wire insertion holes on both sides to strengthen the mutual assembly, and also allows the wires of both equipment parts to be firmly attached to each other. The present invention relates to a waterproof joint for equipment parts that waterproofly covers electric wires routed through an insertion hole.

[Conventional technology]

Fig. 4 is a schematic diagram showing the engine room of an automobile.The engine 1, the relay block storage case 2, and other equipment are mounted in the engine room on the left side of the dash panel P, and the electric wires inserted in the dash panel P are installed in the engine room. A wire harness W passing through the hole is routed to each device.

_W1 is a wire harness branched from the wire harness W, inserted into the relay block storage case ₂ via the connector 3, and connected to the relays, fuses, etc. of the relay block housed inside; This is a wire harness that is connected to electrical equipment attached to the engine.

The inside of the engine room is exposed to moisture due to pressure water cleaning or rainwater entering while driving, so water droplets may enter the room through the wire insertion holes in the dash panel P, or the wire connections of equipment in the engine room may It is waterproof to prevent it from getting wet.

Figure 6 shows a wire harness W which is inserted into the tube 7 of the grommet A with an annular recessed groove 6 which is provided around the thick wall part 5 of the grommet A and is elastically fitted into the wire insertion hole H of the dash panel P. is wrapped with tape together with tube 7 to make it waterproof.

Further, a similar grommet is fitted into the hole for inserting the wire harness _W2 in the relay block housing case 2, and the wire harnesses W and _W1 between the two grommets are covered with waterproof tape.

Similar waterproofing is applied to other wiring harnesses.

However, it is not desirable in terms of efficiency of wiring work to fit grommets into the insertion holes of each wire harness and cover them waterproofly by wrapping tape between them. Grommet B is used.

In the figure, the grommet B has two thick parts 8 and 9, the thick part 8 is provided with an annular recess 10 that fits into the hole H of the dash panel P, and the thick part 9 is provided with a relay block storage case. An annular groove 11 is provided to be fitted into the wire harness insertion hole of No. 2.

A tube 12 is attached to one end of the thick wall portion 8 , and the other end is connected to one end of a cylindrical peripheral wall portion 13 . A tube 14 is connected to the other end of the thick walled portion 9.

Then, the wire harness W is inserted into the grommet B, and the wire harness W is routed through the wire insertion hole H of the dash panel P through the wire insertion hole 15 of the relay block storage case 2, as shown in FIG.

The procedure for this wiring work is shown in FIG.

First, as shown in Fig. 9A, insert the wire harness W inserted into the grommet B from the right side chamber of the dash panel P into the left engine compartment through the wire insertion hole H, and as shown in Fig. 9B. As shown, the annular recess 10 is fitted into the wire insertion hole H.

Next, as shown in FIG. 9C, the wire harness W is inserted into the electric wire insertion hole 15 of the relay block storage case 2, and the annular recess 11 is fitted into the electric wire insertion hole 15 as shown in FIG.

Then, the connector 16 connected to the tip of the wire harness W is connected to the connector disposed inside the relay block storage case 2 (see FIG. 9E).

The wire harness W wired as described above is waterproofed from the dash panel P to the relay block storage case 2 by the surrounding wall portion 13 connected to the thick wall portions 8 and 9, so that the wire harness W cannot be wrapped with tape. This has the advantage of streamlining the wiring work and improving the reliability of waterproofing.

[Problem that the invention attempts to solve]

However, the grommet B mentioned above had the following problems.

That is, as shown in FIG. 5, when the relay block storage case 2 is mounted close to the dash panel P, the work space for fitting the grommets B into the wire insertion holes H and 15 becomes narrow, making the work extremely difficult. It becomes difficult.

Furthermore, the relay block storage case 2 mounted in the engine room also had the following problem.

Although the relay block storage case 2 is fixed to the floor of the engine room by a support member provided at the lower part, it tends to sway when the vehicle is running, and some kind of sway prevention means is required.

The present invention provides waterproof coating for equipment parts that reliably provides waterproof coating without the need for troublesome work such as wrapping with tape, can be easily installed even when the gap between equipment is small, and has the effect of preventing rolling of equipment parts. It provides a joint.

[Means for solving problems]

In order to achieve the above object, the present invention has a joint body with high rigidity, which has joint surfaces on both sides that overlap with the equipment parts, and has a wire insertion hole inside that opens to both the joint surfaces. Waterproofing for equipment parts that is fastened between both equipment parts by providing a circumferential elastic material having an end surface protruding outward from the surface, and providing a fastening member for fastening the equipment parts superimposed on both the joint surfaces. A joint was constructed.

[Effect]

Insert a waterproof joint for equipment parts between both equipment parts,
When both equipment parts are fastened together using the fastening members provided on both joining surfaces, the elastic members protruding from both joining surfaces are pressed against the sides of both equipment parts and are compressed and deformed.
When both joint surfaces come into contact with the sides of both equipment parts, the elastic member has elastic force and tightly adheres to the sides of both equipment parts, creating a waterproof and sealed wire insertion path between the wire insertion holes of both equipment parts. is formed.

Moreover, both device parts are firmly fastened by the fastening members provided on both joint surfaces, resulting in a structure that is unlikely to sway due to vibrations.

〔Example〕

Embodiments of the present invention will be described based on the drawings.

In the longitudinal cross-sectional view of FIG. 1, reference numeral 17 denotes a joint body made of a hard resin material, and male threaded portions 18a, which protrude from both side surfaces 17a, 17b of the joint body 17,
A bolt 18 having a diameter 18b is insert molded when the joint body 17 is molded.

This bolt 18 is a fastening member that fastens equipment parts superimposed on both sides of the joint body 17 by means of a nut screwed into the male threaded portions 18a and 18b. It does not matter if it is a fastening member.

Inside the joint body 17 are both side surfaces 17a and 17b.
It has a wire insertion hole 19 that opens into the joint body 17.
Elastic members 20 and 21 having end surfaces protruding outward from both side surfaces 17a and 17b are provided around the outer circumferential surface of.

Waterproof joint C for equipment parts configured as above
When other equipment parts such as the dash panel P and the relay block storage case 2 are joined to both side surfaces 17a and 17b, and the nuts screwed into the male screws 18a and 18b are tightened, the elastic members 20 and 21 are pressed against both sides, respectively. It is compressed until it becomes flush with the surfaces 17a and 17b, and is brought into close contact with the dash panel P and the relay block storage case 2 with elastic force.

Thus, the wire insertion holes H, 15 and the wire insertion hole 19 form a wire insertion path that is waterproofed from the outside, and the wire harness W inserted through the wire insertion path does not require any waterproof measures such as wrapping with tape.

Moreover, since the joint body 17 has high rigidity and fastens the relay block storage case 2, which tends to sway due to vibration, to the dash panel P, the vibration problem of the relay block storage case 2 is solved.

Further, as shown in FIG. 5, when the relay block storage case 2 is disposed close to the dash panel P, the overall length of the device component joint C may be shortened as shown in FIG. 2.

In this case, since the elastic members 20 and 21 are too close to each other, the elastic member 22 is made into an integrated structure, but the other components are simply shortened in length.

As shown in FIG. 3, the wire harness W passing through the hole H of the dash panel P is connected to the relay block storage case 2 without being branched.
By inserting it into the relay block storage case 2, connecting it to the connector 24 of the relay block 23 inside the relay block storage case 2, and connecting the electric wire of the wire harness _W2 to the connector, the relay block storage case 2
The distance between the dash panel P and the dash panel P can be made extremely small.

〔effect〕

The present invention has the following effects.

(a) By fastening equipment parts to both sides of a waterproof joint for equipment parts, the electric wires inserted through the wire insertion holes of both equipment parts can be easily and reliably covered with waterproof coating.

(b) Waterproof joints for equipment parts can be used even when the distance between the two equipment parts is extremely small, thus solving the problem that occurred with conventional grommets, where they could not be used when the distance between them was narrow.

(c) Since the equipment parts are fastened to both sides of the highly rigid joint body, it is possible to prevent rolling when one equipment part is prone to rolling.

[Brief explanation of drawings]

Figures 1 to 3 show embodiments of the present invention;
The figure is a vertical cross-sectional view of a waterproof joint for equipment parts used when the distance between equipment parts is long, Figure 2 is a vertical cross-sectional view of a waterproof joint for equipment parts used when the distance between equipment parts is short, Figure 3 is a vertical cross-sectional view of a waterproof joint for equipment parts with a dash panel P and relay block storage case fastened on both sides, Figures 4 and 5 are schematic diagrams of the engine room, and Figure 6 is a vertical cross-section of a conventional grommet. 7 is a perspective view of another conventional grommet, FIG. 8 is a perspective view of the dash panel and relay block storage case, and FIG. 9 is a front view showing the installation procedure of the grommet shown in FIG. C...Waterproof joint for equipment parts, P...Dutch panel, W, _W1 , _W2 ...Wire harness, H...
...Wire insertion hole, 2...Relay block storage case, 17...Joint body, 18...Bolt, 19...
...Wire insertion hole, 20, 21, 22...Elastic member,
23... Relay block, 24... Connector.

Claims (1)

[Scope of utility model registration request] A highly rigid joint body that has bonding surfaces that overlap with the device parts on both sides and a wire insertion hole that opens to both of the bonding surfaces, and an elastic body that has an end surface that protrudes outward from both of the bonding surfaces. A waterproof joint for equipment parts, characterized in that a fastening member is provided surrounding the member and fastening the equipment part superimposed on both of the joining surfaces.