JP2559513Y2 - Locking structure of relay integration - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking structure for detachably locking a relay integration used for wiring of an electric circuit of an automobile to a junction block.

Conventionally, as shown in FIG. 3, a relay integration 3 used as a storage box for functional components such as relays and diodes is fixed to a lower surface of a junction block 2 used as a branch connection box of a wire harness 1. It is assembled.

The relay integration 3 has a built-in relay for system control confirmation such as a key illumination, a defogger timer, and a lamp auto cut. When a high load current flows, the connected computer is broken. It acts to prevent that. Therefore, when there is a failure in the electric component or the electric circuit of the vehicle, first, the electric component itself and the wiring circuit portion including the junction block 2 are inspected. Becomes However, in most cases, the cause of the failure is determined before the relay integration is inspected. Therefore, it is rare to remove and inspect the relay integration. Without considering performance
Installed.

[0004]

That is, as shown in FIG. 3, a locking claw 4 is projected from the lower end of the side wall of the lower case 2A of the junction block 2, while the locking claw 4 is formed on the side wall of the relay integration 3. An inverted U-shaped locking piece 5 to be locked is fixedly protruded from the lower ends of both sides, and a locking claw 4 is locked to the locking piece 5 as shown in FIG. Relay integration 3 is installed.

[0005] As shown in FIG. 4, in the above-mentioned locking portion, the lower case 5 of the junction block 2 is opposed to the upper frame portion 5 a of the locking piece 5 which locks to the upper end of the locking claw 4 of the lower case 2 A of the junction block 2. The lower end of the upper case 2B to be attached to the 2A is arranged close to. Therefore, the locking piece 5
The gap C between the upper frame 5a and the upper case 2B is extremely narrow.

Also, when mounted on a vehicle, the relay integration 3 is arranged at the back of the junction block 2 and the junction block 2 is very difficult to remove because it is connected to the wire harness.
Therefore, it is necessary to release the latch and remove only the relay integration without removing the junction block 2. However, the side operating the locking piece 5
The space on the X side in FIG. 4 is also narrow, and the gap C between the upper case 2B and the upper case 2B is very narrow as described above.
Since there is no gap between the hand and the jig, it is very difficult to open the locking half upper frame 5a in the direction of the arrow to release the lock with the locking claw 4.

[0007] As described above, conventionally, the locking mechanism of the relay integration does not consider removal. Therefore, if it becomes necessary to remove the relay integration for some reason, for example, no failure can be found in other parts, the following problems occur. The upper frame 5a of the locking piece 5 that locks with the pawl 4 is broken, and the relay integration 3 is taken out from the installation position.

As described above, since the relay integration is broken when a high load current flows, it is difficult to determine whether or not the relay integration is broken. To take out
Despite not being disconnected, it cannot be reused,
Also, the relay integration is very expensive, which is a major drawback.

As described above, the present invention eliminates the conventional problem that there is no gap for inserting a jig such as a screwdriver and the like, so that it has to be broken to release the latch, and the relay integration can be easily taken out when necessary. The purpose is to do so.

[0010]

In order to achieve the above-mentioned object, the present invention is directed to an inverted U in which a locking claw is formed on an upper frame with respect to a locking claw protruding from a lower portion of a side wall of a junction block.
The lower end of each of the bases is connected to the side wall, and the lower end of the base is connected to the side wall to protrude upward, and the engaging claw of the engaging piece is engaged with the upper surface of the engaging claw of the junction block to form a junction block. In the relay integration to be fixed to the intermediate portion at a predetermined distance from the upper frame at the base of both sides of the locking piece, and integrally formed a hook portion projecting outward, the hook portion and the upper frame A rod-shaped jig is inserted obliquely from above into the gap between them, and the rod-shaped jig is rotationally moved to a fulcrum at the tip end where the rod-shaped jig is in contact with the side wall of the relay integration, so that the hook portion is pushed down, thereby engaging the upper frame. An object of the present invention is to provide a relay integration locking structure having a configuration in which a locking between a locking claw and a locking claw of a junction block can be easily released.

[0011]

As described above, since a hook is attached to the latch piece of the relay integration, a jig such as a driver is hung on the hook and the locking piece is bent to lock the junction block. The lock with the claw can be released, without breaking the latch piece of relay integration,
Can be taken out.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in FIGS. Since the junction block has the same configuration as that of FIG. 3, the same reference numerals are given and the description is omitted. The locking piece 12 integrally formed at the center of the side wall 11 of the relay integration 10 has an inverted U shape, and the lower ends of both sides 12a, 12a are connected to the side wall to form an upper frame 1
2b can be flexed in the direction of the arrow in FIG.

The locking piece 12 has both sides 12a, 12a.
Are integrally formed with a hooking portion 13 projecting outward connecting the intermediate portions of the two. The hook 13 protrudes from the outer surfaces of both sides 12a, 12a in a U-shaped frame shape. Locking pieces 12a and 12a
Since there is a gap therebetween, a gap C ′ surrounded by the hook portion 13 is large, and there is a sufficient gap into which the driver D can be inserted.

Therefore, when it becomes necessary to take out the relay integration 10, as shown in FIG. 2, the driver D is inserted into the gap C 'and the locking piece 12 is moved outward by operating in the direction of the arrow. Deflection, upper frame 12
The lock between the b and the locking claw 4 can be released.

[0015]

[Effects of the Invention] As is clear from the above description, according to the latching structure of the relay integration according to the present invention, the latching piece is provided with a hook portion by a driver, so it is necessary to remove the relay integration. If it does, the latch piece of the relay integration can be easily taken out without breaking.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the embodiment of FIG.

FIG. 3 is an exploded perspective view of a conventional example.

FIG. 4 is an enlarged sectional view of a main part of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire harness 2 Junction block 2A Lower case 2B Upper case 4 Locking claw 10 Relay integration 12 Locking piece 13 Hook part D driver

Claims (1)

(57) [Scope of request for utility model registration] An inverted U formed with a locking claw on an upper frame with respect to a locking claw protruding from a lower portion of a side wall of a junction block.
The lower end of each of the bases is connected to the side wall, and the lower end of the base is connected to the side wall to protrude upward, and the engaging claw of the engaging piece is engaged with the upper surface of the engaging claw of the junction block to form a junction block. In the relay integration to be fixed to the above, the intermediate portion at a predetermined distance away from the upper frame at both bases of the locking piece is connected and a hook portion protruding outward is integrally formed, and the hook portion and the upper frame are integrally formed. A rod-shaped jig is inserted obliquely from above into the gap between them, and the rod-shaped jig is rotationally moved to a fulcrum at the tip end where the rod-shaped jig is in contact with the side wall of the relay integration, so that the hook portion is pushed down, thereby engaging the upper frame. The latching structure of the relay integration that can easily release the locking between the locking claw and the locking claw of the junction block.