JP3036572B2 - Box and distribution board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box body provided with a cover that can be opened and closed on a box body, and a distribution board containing a breaker in the box body.

[0002]

2. Description of the Related Art Conventionally, a box used as a case of a distribution board, for example, comprises a box main body and a cover which is engaged with one side of the box main body and can be opened and closed. Is provided with a locking member for locking the cover in a closed state, and an engagement portion with which the locking member is engaged is provided on the other side of the cover.

A conventional locking member is disclosed in, for example, Japanese Utility Model Laid-Open No. 1-618.
As described in Japanese Unexamined Patent Application Publication No. 05-2005 or Japanese Unexamined Utility Model Application Publication No. 1-61806, a mounting portion is provided to be attached to the box body. An operation part for disengaging the engagement part from the engagement part is formed in the engagement part.

[0004] When the locking portion of the locking body is engaged with the engaging portion, the closed state of the cover is maintained, and when the cover is opened, the operating portion of the locking body is pushed into the box body. By the movement operation, the locking portion is elastically deformed and separated from the engaging portion, so that the cover can be opened.

By the way, when the pushing of the operating portion is released, there is a problem that the locking portion is elastically restored and the locking portion is engaged with the engaging portion again. In order to solve this, a leaf spring portion that pushes the cover against the box body is formed in the locking body, or a separate spring is used to prevent the cover from being disengaged from the engaging portion. Can be automatically pushed open to prevent the engaging portion from re-engaging with the engaging portion.

[0006]

However, in order to prevent the engaging portion from re-engaging with the engaging portion when the operation portion is depressed, as in the prior art, a leaf spring portion is provided on the engaging body. Is formed, the cover is used in the closed state, and the leaf spring portion is always kept in the deformed state, so that the leaf spring portion is easily depressed, and the cover cannot be pushed open reliably. In addition, the use of a spring causes a problem that the number of assembly steps increases as the number of parts increases.

In addition, since the state in which the locking portion engages with the engaging portion is maintained by the elastic force of the locking portion, the elastic force varies depending on the elastic deformation state of the locking portion, and the locking portion is disengaged. And the pushing force for pushing the operating portion to disengage the locking portion varies. In addition, if a spring is separately used to engage the engaging portion with the engaging portion, the engaging force and the pushing operation force are stabilized, but there is a problem that the number of assembly steps increases as the number of parts increases.

The present invention has been made in view of such a point, and can reliably prevent the engaging portion from being re-engaged with the engaging portion when the pushing operation of the operating portion of the engaging member is released. Provided are a box body and a distribution board which can stabilize an engaging force with which a locking portion engages with an engaging portion and a pushing operation force with which the operating portion is pushed to disengage the locking portion. Aim.

[0009]

According to a first aspect of the present invention, there is provided a box body comprising: a box body; and a cover which is engaged with one side of the box body and can be opened and closed. In a box body provided with a locking body for locking the cover in a closed state and provided with an engaging portion on the other side of the cover, the locking body is provided on the other side of the cover. An engaging portion to be engaged, an operating portion disposed facing the outer surface of the box main body, and an operating portion for disengaging the engaging portion from the engaging portion when being pushed into the box main body; And a stopper portion which engages with the engaging portion when pressed into the box body to hold the operating portion in the pushed state.

The box according to the second aspect of the present invention is the first aspect of the present invention.
In the box of the invention the mounting, locking body is integrally formed on the rear facing into the box body of the operation portion, an elastic portion for urging outward of the box body of the operation portion with the box body It is a thing.

According to a third aspect of the present invention, there is provided a switchboard.
Alternatively, a breaker is housed in the box of the invention described in 2 .

[0012]

[Action] In the box body of the invention 請 Motomeko 1 wherein, when the pushed the operating portion of the locking body into the box body, together with the disengaging an engagement portion of the engaging member from the engaging portion of the cover Since the stopper portion of the locking body is engaged with the engaging portion to hold the operating portion in the pushing state, the locking portion does not engage with the engaging portion again when the pushing of the operating portion is released.

[0013] In box body of the second aspect of the present invention, claim 1
In addition to the operation of the box body of the invention described above , the engaging portion is urged to the outside of the box body by the elastic portion integrally formed on the rear portion of the operating portion facing the inside of the box body, so that the engaging portion is engaged with the engaging portion. And the pushing operation force when the operating portion is pushed into the box body to disengage the locking portion is stabilized.

According to a third aspect of the present invention, there is provided a distribution panel having good operability by housing a breaker in the box of the first or second aspect of the invention.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to the drawings.

FIG. 7 is a perspective view of a distribution board. The distribution board includes a box 13 composed of a box body 11 and a cover 12. In the box 13, a main breaker 14 and a plurality of breakers are provided as breakers. The branch breaker 15 is housed, and a limiter (not shown) is housed inside the limiter cover 16 of the cover 12.

One side of the box body 11 and the cover 12 is, for example,
It can be pivotally mounted by a hinge or the cover 12
The hook is rotatably attached to the box body 11 by hooking a hook that protrudes from the box body. The other sides of the box body 11 and the cover 12 are releasably locked by a plurality of locking members 17.

FIGS. 4 to 6 show a locking member 17, which is made of an integrally molded product made of resin, has a horizontally long plate-like operating portion 18, and substantially the rear portion of the operating portion 18. A wide base projection 19 is formed in the center area, and a push-opening section 20 having an inclined surface 20a inclined downward from the projecting section 19 is formed so as to protrude. An upper edge of the inclined surface 20a of the push-open section 20 is formed. Protrudes above the projection 19 to form a step-shaped stopper portion 21.

A pair of side plate portions 22 are formed on both sides of the projecting portion 19 and the pushing / opening portion 20 so as to protrude rearward, and a guide piece portion 23 is formed so as to protrude from a lower edge of each side plate portion 22. On the outer surface of 23, a claw portion 24 is formed so as to protrude. A substantially horizontal locking surface 24a is formed on the upper surface of the claw portion 24, and an inclined surface 24b for engaging guide is formed on the lower surface.

An engaging portion 25 is formed between the distal ends of the pair of side plate portions 22, and a claw portion 26 is formed at an upper end of the locking portion 25 so as to project toward the operation portion 18. A substantially horizontal locking surface 26a is formed on the lower surface, and an inclined surface 26b for engagement guide is formed on the upper surface. An opening 27 for molding is opened between the locking portion 26 and the push-opening portion 20.

Protrusions 28 are formed on both sides of the rear portion of the operation unit 18, and an elastic part 29 which is bent upward in a substantially U-shape is formed from each of the protrusions 28. A mounting portion 30 extending downward is formed at the tip of the elastic portion 29, and a claw portion 31 is formed at a lower end of the mounting portion 30. A substantially horizontal locking surface 31a is formed on an upper surface of the claw portion 31. At the same time, an inclined surface 31b for engagement guide is formed on the lower surface.

FIGS. 1 to 3 are cross-sectional views showing a state in which the locking body 17 is mounted on the box main body 11. The box main body 11 is formed with a window hole 32 into which the operating portion 18 of the locking body 17 is fitted. A recess 34 is formed in the lower part of both side walls of the storage space 33 inside the window hole 32, and a mounting groove 36 is formed between the outer wall of the box body 11 and the mounting wall 35 below the storage space 33. Have been.

The cover 12 is formed with a window 37 into which the operating portion 18 of the locking member 17 is fitted, and an engaging portion 38 is formed in the window hole 37 so as to project therefrom. An inwardly projecting claw portion 39 is formed at the lower end, and a substantially horizontal engagement surface 39a is formed on the upper surface of the claw portion 39, and an engagement guide inclined surface 39b is formed on the lower surface. Have been. A protruding portion 40 is formed at the lower end of the engaging portion 38 so as to protrude.
A curved surface portion 40b is formed on the side facing the window hole 37 as well as the surface 40a.

Next, the operation of this embodiment will be described.

First, in order to attach the locking body 17 to the box body 11, the locking body 17 is inserted into the storage space 33 of the box body 11 from above, and the mounting portion 30 is pressed into the mounting groove 36 to thereby form the claw portion. The engaging portion 31 is engaged, the claw portions 24 of the guide pieces 23 on both sides are engaged with the concave portions 34 on both sides of the storage space 33, and the operating portion 18 is fitted into the window hole 32.

When the locking member 17 is mounted, it is supported by the box body 11 via the mounting portion 30, and the operating portion 18 is supported by the elastic portion 29.
Is urged outward from the box body 11, and the operating portion 18 can be pushed inwardly of the box body 11 against the bias of the elastic portion 29.
At the time of pushing, the claw portions 24 of the guide pieces 23 on both sides move in the concave portions 34, and the operating portion 18 can be pushed in parallel.

When the cover 12 is closed on the box body 11,
The claw portion 26 of the locking portion 25 is engaged with the claw portion 39 of the engaging portion 38 of the cover 12, and the closed state where the edge 11a of the box body 11 and the edge 12a of the cover 12 abut on each other is maintained. It is.

When the cover 12 is opened from the box body 11, the operating portion 18 of the locking member 17 is pushed inwardly of the box body 11 against the bias of the elastic portion 29. As shown in FIG. 2, the locking portion 25 moves inward together with the operating portion 18, separates from the engaging portion 38 and is disengaged. Further, the pushing / opening portion 20 comes into contact with the projection 40 of the engaging portion 38, and the engaging portion 38 is forcibly pushed up by the inclined surface 20a of the pushing / opening portion 20. Therefore, the box body
The space between 11 and cover 12 is pushed open.

Further, by pushing the operating portion 18 of the locking member 17 inwardly of the box body 11, the stopper portion 21 is engaged with the projection 40 of the engaging portion 38 as shown in FIG. I do. Even if the pushing operation of the operating section 18 is released in this engaged state, the operating section 18 does not return, and the locking section 25 does not engage with the engaging section 38 again.

Therefore, the cover 12 can be opened even if the pushing operation of the operation section 18 is released. When the cover 12 is opened, the operation portion 18 returns to the inside of the window hole 32 by the elastic portion 29 of the locking member 17.

As described above, when the operating portion 18 of the locking member 17 is pushed, the cover 12 is pushed open and the operating portion 18 is held in the pushing state. Even so, it is possible to reliably prevent the engaging portion 25 from being reengaged with the engaging portion 38, and to open the cover 12.

Further, since the operating portion 18 is urged outward from the box body 11 by an elastic portion 29 integrally formed on the rear portion of the operating portion 18 facing the inside of the box body 11, the engaging portion 25 is engaged with the engaging portion 38. And the pushing operation force for pushing the operating portion 18 into the box body 11 and disengaging the locking portion 25 is stabilized.

[0033]

According to the box of the invention 請 Motomeko 1, wherein, according to the present invention, when the pushed the operating portion of the locking body into the box body, engaging the locking portion of the engaging member from the engaging portion of the cover In order to release the engagement, the stopper portion of the locking body is engaged with the engaging portion and the operating portion is held in the pushed state, so that the locking portion is engaged with the engaging portion again when the pushing of the operating portion is released. Can be reliably prevented.

According to the box of the second aspect of the present invention, wherein
In addition to the effect of the box of the invention described in Item 1 , the locking portion is engaged because the operating portion is urged outward from the box main body by the elastic portion integrally formed on the rear portion facing the inside of the box main body of the operating portion. It is possible to stabilize the engaging force to be engaged with the joining portion and the pushing operation force when the operating portion is pushed into the box main body to disengage the engaging portion.

According to the distribution board of the third aspect of the present invention, it is possible to provide a distribution board with good operability by housing a breaker in the box of the first or second aspect of the invention.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing one embodiment of a box and a distribution board according to the present invention.

FIG. 2 is a cross-sectional view of the locking body according to the embodiment in the middle of pushing.

FIG. 3 is a cross-sectional view of the locking member of the embodiment of the present invention in a pressed state.

FIG. 4 is a plan view of the locking body of the embodiment.

FIG. 5 is a side view of the locking body of the embodiment.

FIG. 6 is a sectional view of the locking body of the embodiment.

FIG. 7 is a perspective view of the distribution board of the embodiment.

[Explanation of symbols]

11 Box body 12 Cover 13 Box 14 Main breaker as breaker 15 Branch breaker as breaker 17 Locking body 18 Operation unit 21 Stopper unit 25 Locking unit 29 Elastic unit 38 Engaging unit

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 5-56008 (JP, U) JP-A 55-67616 (JP, U) JP-A 1-163379 (JP, U) JP-A 2- 58379 (JP, U) JP 4-140004 (JP, U) JP 4 79171 (JP, U) JP 6-52307 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H02B 1/40-1/44 H05K 5/03

Claims (3)

(57) [Claims] 1. A box main body, and a cover that is engaged with one side of the box main body and that can be opened and closed, and a locking body that locks the cover in a closed state is provided on the other side of the box main body. In a box body provided with an engagement portion with which the locking body is engaged on the other side of the cover, the locking body faces a locking portion that engages with the engaging portion, and an outer surface of the box body. And an operating portion for disengaging the locking portion from the engaging portion when pushed into the box body, and engaged with the engaging portion when the operating portion is pushed into the box body. And a stopper for holding the operating portion in a pushed state. Wherein engagement Tometai is integrally formed on the rear facing into the box body of the operation portion, further comprising an elastic portion for urging outward of the box body of the operation portion with the box body Claim 1.
The box of the mounting. 3. A distribution board, characterized in that accommodating the breaker box body according to claim 1 or 2 wherein.