JP2835675B2 - Locking device for electronic unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device for connecting and fixing an electronic unit and the like to a main body, and more particularly, to an electronic unit for mounting and dismounting the electronic unit in a vehicle-mounted electric connection box. The present invention relates to a lock device.

[0002]

2. Description of the Related Art Conventionally, to mount an electronic unit on an electric connection box, a connector of the electronic unit is inserted into a socket provided on the electric connection box, and a plurality of engaging portions are provided on a case of the electric connection box. Also, a hook portion provided with the same number of claw-shaped protrusions is provided on the case of the electronic unit, and the hook portion is pressed into the engagement portion and locked. To release the lock, for example, a release jig such as a screwdriver is inserted into the gap between the hook portion and the engagement portion to release the engagement between the hook portion and the engagement portion. Another part was likewise released and the electronic unit was removed from the electrical junction box.

[0003]

However, in the above-mentioned conventional locking device for an electronic unit, it is easy to mount the device and it is highly reliable as a device for preventing deviation, the structure is simple and the locking of many devices is prevented. Although it is widely used as an apparatus, there are drawbacks in that not only is it troublesome to remove the electronic unit, but also in some cases, the hook portion is damaged and locking becomes impossible. Further, if the electric connection box is for use in a vehicle, it is difficult to remove the electronic unit in a narrow space such as a vehicle, and there is a problem that the operation of a driver used for removal is complicated. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has as its object the purpose of being easy to mount and completely locked, and unlocking a plurality of locations with a single driver, for example. It is an object of the present invention to provide a locking device for an electronic unit from which the unit can be removed.

[0005]

To achieve the above object, according to an aspect of the locking device of the electronic unit of the present invention, in claim 1
As described, a hollow shaped to engage Rutotomoni an elastic protrusion at the tip of the hook portion of the electronic units to be deposited bonded to the body portion, the hook portion at the outer periphery of the <br/> body portion
Guide engaging portion, and the hook portion is provided with the electronic unit.
Guide engagement by bending away from
Can be released from the locking projection of the
The engaging portion is the hook portion of the hook portion removed from the locking projection.
The elastic projection can be locked .

[0006] The present invention also provides a second aspect of the present invention.
In the hook portion, the hook portion is formed from the locking projection.
Even if there is a locking hole to insert a release jig to remove
Good.

[0007]

The lock unit for an electronic unit having the above configuration
In the case of attaching the electronic unit to the body
The hook on the electronic unit side is separated from the electronic unit.
In the guide engagement section on the main body side while bending and deforming in the direction
It is guided and easily locked over the locking projection . To remove the electronic unit from the main body , a release jig (for example, the tip of a screwdriver) is inserted from below the guide engaging portion and split between the hook portion and the locking projection.
And the hook is bent away from the electronic unit
To release the hook from the locking projection.
You. At this time, the elastic projection provided at the tip of the hook
The release jig is locked to the hook
Even when pulled out from between the stop projections, the curved state of the hook part
Will be maintained. Therefore, such an electronic unit lock
The device does not use multiple release jigs, but
The electronic units can be easily removed from the main body by releasing the locks at a plurality of locations . Also, such an electronic
In the unit locking device, the hook
Lock that inserts a release jig to remove the locking part from the locking protrusion
If a hole is provided, attach the release jig to the electronic unit.
Can be inserted from the side, improving workability in narrow areas
it can.

[0008]

1 to 6 show a first embodiment of the present invention.
It will be explained by. In FIG. 6, 1 is an electric junction box,
2 is an electronic unit. The electric connection box 1 has a built-in branch circuit of a wire harness, is provided with a large number of sockets 3 on the outside, and connects to various electric components mounted on, for example, an automobile. The electronic unit 2 is a unit that incorporates appropriate electronic components and is mounted on the electric connection box 1 via a connector 4 provided outside to perform judgment control and the like. A guide engaging portion 5 for holding the electronic unit 2 to be mounted is provided outside the electric connection box 1, and an elastic protrusion is provided outside the electronic unit 2 at a position where the guide engaging portion 5 is provided. Is provided with a hook portion 6 having
One of the sockets 3 provided at a predetermined position of the electronic unit 2
When the connectors 4 are connected and connected together, the guide engaging portion 5 and the hook portion 6 are locked to each other.

As shown in FIG. 1A, the guide engaging portion 5 includes a guide portion 8 provided on the outside of a main body portion 7 of the electric connection box 1 and serving as a left and right side plate, and the guide portion 8. 8
It has a substantially rectangular hollow shape formed of a front plate 9 which is further extended and covers the front side, and the front plate 9 has a groove slightly wider than a width direction of an elastic projection 14 of a hook 6 described later. The elastic member provided with the portion 10 is formed of a synthetic resin. A locking projection 11 having a downwardly inclined surface is provided on the corresponding surface provided with the slit portion 10 in the hollow portion.

On the other hand, as shown in FIG. 1B, two hook portions 6 are vertically suspended outside the electronic unit 2 and provided at intervals in the width direction of the guide portion 8. And a connecting portion 13 connected to the lower end of the lock arm 12. An elastic projection 14 is provided below the center of the connecting portion 13. A locking projection 15 (not shown) having an inclined surface is provided. It goes without saying that a gap corresponding to the thickness of the guide engaging portion 5 is provided between the outer portion of the electronic unit 2 and the hanging portion of the lock arm 12.

When the outer surface of the lock arm 12 of the hook part 6 is pushed into the guide part 8 which is the both side plates of the guide engagement part 5 from above, the lock arm 12 is moved to the electronic unit.
Locking projection 5 in the direction away from
Moves over the locking projection 11 of the guide engaging portion 5 (FIG. 2).
3), and locked as shown in FIG. As a result, the electronic unit 2 is attached and connected to the electric junction box 1.

In order to release the connection between the electric junction box 1 and the electronic unit 2, as shown in FIG. Is inserted into the gap between the lock arm 12 and the guide engaging portion 5 and tilted rightward in the figure, the release jig 16 contacts the lower end of the guide engaging portion 5 as shown in FIG. By this action, the lock arm 12 is moved clockwise, and the elastic projection 14 at the tip of the lock arm 12 is
And protrudes to the outside beyond the front plate portion 9 provided therethrough.
When the release jig 16 is removed in the projecting state, the elastic projection 14 is temporarily locked to the front plate 9 and the lock arm 12 is completely released from the locked state. Hereinafter, if all the lock devices 17 around the electronic unit 2 to be removed are opened as described above, the electronic unit 2 becomes
It can be removed more easily.

FIG. 4 shows a modified example of the above-described hook portion 6. The hook portion 6A has a connection portion 13A for connecting the lock arm 12, which has a thick structure, and a locking hole 18 through which the tip of the release jig 16 can be freely inserted. The structure is the same as that of the hook 6 described above. As shown in FIG. 5, the hook portion 6 </ b> A is connected to the tip of the release jig 16 from above the electronic unit 2 by the engagement hole 18.
The lock arm 12 is moved in the imaginary line direction in FIG. 5 by applying a force by applying a part of the release jig 16 to the upper edge of the electronic unit 2 so that the lock arm 12 is in front of the guide engagement portion 5. The elastic projection 14 is locked to the plate (not shown) to release the lock.

Next, a second embodiment of the present invention will be described with reference to FIGS. In FIG. 7, the hook 6B provided on the electronic unit 2 is configured such that the elastic projections 14 protruding from the lower ends of the hooks 6A described in the above-described modification are perpendicularly attached to the tips of the lock arms 12 on the left and right sides. It is formed so as to protrude and to have a claw 19 facing outward at the tip. A connection portion 13A having a locking hole 18 is provided between the two lock arms 12. on the other hand,
Guide engaging portion 5A provided on main body 7 of electric junction box 1
A guide portion 8A having a width for accommodating the claw portion 19 and serving as a left and right side plate, a front plate portion 9A extending to the guide portion 8A and covering the front side, and an inner side of the front plate portion 9A. And left and right elastic projections 20 projecting from the guide portion 8A. At the position corresponding to the front plate portion 9A in the middle of the guide portion 8A, a locking projection 11 similar to that shown in the first embodiment is provided.

The lock device 17 having the above-described configuration is shown in FIG.
As shown in the figure, the locking projection 15 of the hook portion 6B can be brought into contact with the guide engaging portion 5A only by attaching the electronic unit 2 from above.
The electronic unit 2 and the electric connection box 1 are easily attached and connected to each other. To remove the coupled electronic unit 2, the tip of the release jig 16 is connected to the connection portion 1 of the hook 6 B from above the hook 6 B.
The locking projections 15 and 11 are easily separated from each other by locking in a locking hole 18 provided in the 3A and applying a clockwise force. 5
A once over the elastic projection 20 of FIG. Hereinafter, if the lock devices 17 provided at a plurality of locations are released in the same manner, the electronic unit 2 can be easily removed even in a place narrower than the electric connection box 1.
Although not particularly shown, the claws 19 provided at the tip of the lock arm 12 are provided so as to protrude inward from each other.
The same effect can be obtained by projecting the elastic projection 20 in the guide engagement portion 5A from the back surface of the front plate 9A and holding the elastic projection 20 in the left-right direction with the claw 19.

The hook portions 6, 6A, 6 of the above-described embodiments are used.
B and the guide engaging portions 5 and 5A are prepared in advance as components on a single thin plate substrate, and, for example, a hook portion 6 is provided in a place where it must be opened from one of the upper sides.
A, such as A and the guide engaging portion 5 or the hook portion 6B and the guide engaging portion 5A, are selected in accordance with the place of use, an adhesive or the like is applied to the back surface of the substrate, and the substrate is attached and used as the lock device 17. You can also.

[0017]

As described above, in the lock unit for an electronic unit according to the present invention, the elastic projection provided at the tip of the hook, and the elastic projection provided on the guide engaging portion for locking the hook are provided. Provision of a member for supporting and locking allows the hook portion for releasing the lock to be temporarily supported by the guide engaging portion, thereby facilitating removal of the electronic unit and easy handling in a narrow space such as a vehicle. There are advantages. Also this
According to such an electronic unit locking device, the guide engagement
Since the part is hollow, it can guide the release jig
To protect the hooks and locking projections from interlocking
Also, there is an advantage that the possibility of being inadvertently released can be avoided.
is there.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a lock device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view when the lock device of FIG. 1 is mounted.

3 (A) is a cross-sectional view of a first stage for releasing a lock in the lock device of FIG. 2, and FIG. 3 (B) is a sectional view of FIG.
It is sectional drawing of the 2nd stage which unlocked the lock device of FIG.

FIG. 4 is a perspective view of a hook portion showing a modification of the first embodiment of the present invention.

FIG. 5 is a side view showing the operation of the hook part of FIG. 4;

FIG. 6 is an exploded perspective view of the electronic unit equipped with the lock device according to the first embodiment of the present invention and the electric connection box;

FIG. 7 is an exploded perspective view of a lock device according to a second embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a released state in the lock device of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric connection box 2 Electronic unit 5 Guide engagement part 6 Hook part 14 Elastic projection part 16 Release jig 17 Lock device 18 Lock hole

Claims (2)

(57) [Claims] 1. A Rutotomoni an elastic protrusion at the tip of the hook portion of the electronic units to be deposited bonded to the body portion, a hollow shaped to engage the hook portion at the outer periphery of the present <br/> body
A guide engaging portion, wherein the hook portion includes the electronic unit;
The guide engaging portion is curved in a direction away from the guide engaging portion.
Can be released from the locking projection of
The mating portion is the elastic of the hook portion removed from the locking projection.
A locking device for an electronic unit, wherein the locking unit is capable of locking a sex protrusion . 2. The locking device for an electronic unit according to claim 1, wherein the hook portion has a locking hole for inserting a release jig for removing the hook portion from the locking projection. .