JP2597715Y2 - Cover for electrical junction box - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover for an electric connection box for fixing a block body such as a junction block, a relay block, a fusible link block or the like, and more particularly, a locking portion for locking the cover and the block body. Is provided only on the cover side so that a locking portion is not required on the block body side, and the lock can be easily released without using a jig.

[0002]

2. Description of the Related Art Conventionally, when a block body such as a junction block is housed and fixed in a box-shaped cover having an upper surface opening, a locking groove and a locking claw are respectively formed on an inner wall of the cover and an outer wall of the block body. The locking claw is locked by locking the locking claw in the locking groove. For example, as shown in FIG. 7, a lock portion 2 is provided at a required position on the inner wall 1a of the side wall 1 of the lower cover. The lock portion 2 has an L-shaped frame wall 2a having a tip bent from both sides in a direction approaching each other to protrude inward of the lower cover, and a bent surface at the tip of the frame wall 2a and the inner wall 1a are formed. An insertion groove 3 is formed therebetween. Also,
The lock portion 2 is provided with a flexible piece 2b projecting upward from below the inner wall 1a, and the flexible piece 2b is provided with a locking claw 2c.

On the other hand, as shown in FIG. 8, the block body 4 is provided at a position facing the lock portion 2 with the frame 2a.
And a lock piece 4b shaped so as to be inserted into the insertion groove 3 from the center position of the outer end of the side wall 4a, and the lock portion 2 is provided on the lock piece 4b.
A groove 4c that engages with the locking claw 2c is formed. Therefore, in these engaged states, the lock piece 4b of the block body 4 is fitted in the insertion groove 3 of the lower cover, and
The frame 2a of the lock portion 2 is sandwiched between the lock piece 4b and the side wall 4a to securely fix the block body 4 and the lower cover.

[0004]

However, if the locking portion is provided by projecting the locking portions on the inner wall of the cover and the outer wall of the block body as described above, it is necessary to release the lock for inspection or the like. It is necessary to release the lock using a jig such as a screwdriver, which is troublesome.

Further, since the locking portions are provided on both the block main body and the cover, there are disadvantages that the occupied area of the lock portion becomes large and large, and the shapes of the block main body and the cover become complicated.

The present invention has been made in view of the above-mentioned problem, and enables the lock to be easily released without using a jig. An object of the present invention is to provide a cover for an electric junction box in which a lock portion is provided to reduce the occupied area of the lock portion.

[0007]

In order to achieve the above-mentioned object, the present invention provides a box-shaped cover having an upper surface opening for fitting and fixing a block body such as a junction block therein from an inner surface of an outer peripheral wall of the cover. A fulcrum projecting inward in the horizontal direction, an elastically acting portion vertically projecting upward from the tip of the fulcrum, and an inwardly projecting tip from the tip of the elastically acting portion. A locking piece having a lock claw is provided, and the block body is fitted to the cover while bending the elastic action portion outward, and the upper surface of the block body is locked by the lock claw that has been elastically restored. The present invention provides a cover for an electric connection box, which is configured to be fixed by fixing.

A pedestal portion for the block main body is provided at the lower portion of the inner surface of the outer peripheral wall of the cover so as to protrude inward. The pedestal portion holds the bottom surface of the block main body. The block body is fixed inside the cover by pressing the upper surface of the block body with the portion.

[0009] A gripping projection is provided on the upper surface of the locking claw portion of the locking piece, and an inner surface of the projection is formed as a tapered surface inclined downward. The locking piece can be easily deflected outward with the handle to release the lock. By making the inner side surface of the gripping projection a tapered surface, the block body can be easily inserted along the tapered surface while bending the locking piece outward.

[0010]

When the cover having the above structure is used, when the block body is inserted into the inside of the cover, the locking piece can be inserted with the elastic acting portion flexing outward with the fulcrum as a fulcrum. When the pressing on the portion is released, the portion returns to the original shape by the elastic force, and the lock claw portion on the upper end presses and locks the upper surface of the block main body. At that time, the bottom surface of the block main body is supported by the pedestal portion of the cover, and the block main body is sandwiched between the pedestal portion and the lock claw portion.

On the other hand, when the lock is released to take out the block main body from the above-mentioned locked state, a lock claw located on the upper surface of the block main body, preferably a grip protruding from the upper surface of the lock claw is provided. When the operator grasps the projection with a finger and pushes it outward, the locking piece is easily bent outward and the lock can be released.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, a junction block main body 1 is provided inside a box-shaped cover 10 having an upper surface opening.
1 (hereinafter abbreviated as a block body), and locking pieces 10b-1, 10b protruding from the inner surface of the outer peripheral wall 10a of the cover 10.
The block body 11 is locked in a state where the block body 11 is held between the block body 2 and the block body base 10c.

The locking piece 10b-1 protrudes from the outer peripheral wall 10a on the left side in FIG. 2, and as shown in FIGS. 3 (A), 3 (B) and 3 (C), the inner side of the inner surface of the outer peripheral wall 10a. In addition to a fulcrum 10d protruding in the horizontal direction toward, a resilient portion 10e vertically protruding upward from the tip of the fulcrum 10d is provided to form an L-shape. And,
The elastic action portion 10e is provided with a rib 10e-1 from the vicinity of the upper end to the fulcrum portion 10d.

Further, at the upper end of the elastic action portion 10e,
A locking claw 10f is provided which protrudes inward in the horizontal direction, and a flat holding protrusion 10g is protruded from the upper surface of the locking claw 10f. The tapered surface 10g-1 is inclined toward the surface.

The locking piece 10b-2 shows a case where the opposing portion of the block body 11 to be held and fixed has a curved surface. As shown in FIGS. 4A and 4B, the locking claw 10f ' The lower surface is provided so as to be curved along the curved surface of the block body 11. Except for the above configuration, the locking piece 1 shown in FIG.
Since the configuration is the same as that of 0b-1, detailed description is omitted.

As shown in FIGS. 2 and 5, the pedestal portion 10c protrudes inward from the lower portion of the inner surface of the outer peripheral wall 10a of the cover 10, and the upper surface of the pedestal portion 10c and the lock claw are formed. Distance H between the lower surfaces of the portions 10f and 10f '
Is set to be slightly larger than the height of the position facing when the block body block 11 is inserted, and a reinforcing rib 10c-1 is provided on the lower surface side. When the bottom surface of the block body 11 is in contact with the bottom surface of the cover 10, the pedestal portion 10c is unnecessary.

Next, a description will be given of a mounting step of mounting the block main body 11 on the cover 10 having the above configuration. First, the block main body 11 is inserted through the upper opening of the cover 10. Thereby, the lower end of the block main body 11 contacts the tapered surface 10g-1 of the projection 10g of the cover 10.

The block body 11 is pressed downward from the above state. By this pressing, the elastic acting portion 10e bends toward the outer peripheral wall 10a along the tapered surface 10g-1 of the cover 10 while the block main body 11 is lowered. Specifically, the downward pressing force of the block body 11 is converted into the pressing force on the outer peripheral wall 10a side by the tapered surface 10g-1, and the fixed end of the fulcrum portion 10d protruding from the outer peripheral wall 10a is used as a fulcrum. According to the principle of leverage, the elastic action portion 10e bends to allow the block main body 11 to be inserted as shown in FIG.

Further, the pressing of the block body 11 is continued,
The lower surface of the block body 11 is the base 1 of the cover 10.
At the same time when it comes into contact with 0c, the pressing on the elastic acting portion 10e is released, and the elastic force of the elastic acting portion 10e returns to the original state with the fulcrum portion 10d as a fulcrum, and the lock claw portions 10f, 10f 'at the upper end are blocked. The upper surface of the main body 11 is pressed to enter the locked state shown in FIG.

In the above-mentioned fixed state, the block main body 11 is covered by the lock claws 10f, 10f 'and the base 10c.
The lock claw portions 10f, 1
The projecting portion 10g projecting from the upper surface of 0f 'projects upward from the upper surface of the block main body 11.

On the other hand, when the lock is released to take out the block main body from the above-mentioned locked state, the protrusion 10f projecting from the upper surface of the lock claw 10f, 10f 'located on the upper surface of the block main body is used. An operator grasps with a finger and presses the outer peripheral wall 10a. By the pressing, the locking piece 10b-
1, 10b-2 easily bends outward with the fulcrum 10d as a fulcrum, and the lock claws 10f, 10f 'are detached from the upper surface of the block main body 11 to release the locked state. By pulling out the main body 11, the block main body 11 can be easily detached.

[0022]

As is apparent from the above description, in the cover for an electric junction box of the present invention, an elastic action portion is provided which is bent at a fulcrum projecting from the outer peripheral wall, and a junction is provided at the upper end of the elastic action portion. Blocks, relay blocks, fusible link blocks, and the like are provided with locking pieces provided with lock claws for locking the upper surfaces of the block bodies, while pedestals are provided for holding the bottom surfaces of the block bodies, and these locking pieces are provided. The pedestal allows the block main body to be securely clamped and fixed.

Further, the lock claw portion is provided with a gripping projection projecting from the upper surface, and the gripping projection has
Since the cutout is provided with a tapered surface in which the inner side surface is inclined downward, when the block main body is inserted, the elastic acting portion can be easily bent along the tapered surface and inserted. When the pressing force on the acting portion is released, the elastic acting portion returns elastically and is locked on the upper surface of the block main body to be in a locked state.

On the other hand, in the above-mentioned locked state, since the gripping projections protrude from the upper surface of the block main body, when releasing the above-mentioned locked state, the gripping projections are pressed against the outer peripheral wall side. The elastic action portion can be bent, and the locked state can be easily released.
Therefore, when detaching the block body once attached, the block body can be easily detached from the cover by releasing the locked state as described above.

Further, since the lock mechanism between the cover and the block main body is provided only on the cover, the occupied area for fixing the cover and the block main body can be reduced. The structure of the box can be simplified and downsized.

[Brief description of the drawings]

FIG. 1 is a side view showing a fixed state of a cover and a block main body.

FIG. 2 is a plan view showing a cover.

3A and 3B show locking pieces of a cover, FIG. 3A is a side view, and FIG.
Is a front view, and (C) is a perspective view.

4A and 4B show a locking piece in a case where a locking portion is curved, where FIG. 4A is a side view and FIG. 4B is a front view.

FIG. 5 is a side view showing a state before the block main body is inserted.

FIG. 6 is a side view showing an inserted state of the block main body.

FIG. 7 is a perspective view showing a conventional cover lock mechanism.

FIG. 8 is a side view showing a conventional lock mechanism of a block body.

[Description of Signs] 10 Cover 10b-1, 10b-2 Engagement piece 10c Pedestal part 10d Support point part 10e Elastic acting part 10f, 10f 'Lock claw part 10g Gripping protrusion part 10g-1 Tapered surface 11 Block body

Claims (2)

(57) [Scope of request for utility model registration] 1. A block of a junction block body or the like.
Box-shaped cover with an open top to secure the
-The side of the block body surrounded by the cover is flat
There is no locking part in the shape, and only the cover side
A stop piece is provided, The locking piece on the cover side is in contact with the side surface of the block body.
Placed with a gap Inside the outer wall of the cover
A fulcrum projecting horizontally toward the side, and the fulcrum
Elastic projecting vertically above the tip of the
Protruding inward from the tip of the elastic acting portion.
Lock claw part, And at the lower part of the inner surface of the outer peripheral wall of the cover,
A pedestal for the block body is provided the above Block body on coverOf the above locking pieceElastic working part
Fit while bending outwardBase for the above block body
While placed on theElastic returnTip of the action part for elasticity
ofLock the upper surface of the block body with the lock claw and fix it
A cover for an electrical junction box. 2. A grip protruding from an upper surface of the lock claw.
And an inner surface of the projection is inclined downward.
The electrical junction box cover according to claim 1, wherein the cover has an inclined tapered surface .