JPH06105420A - Panel box - Google Patents

Abstract

PURPOSE:To lighten the body and a frame while securing the desired strength of the body or the frame and also, simplify transportation or installation work and facilitate the wiring. CONSTITUTION:This panel box is composed of a body 1, which has a rear plate 4 and a pair of side plates 5 and 6 continuing on both sides, a reinforcing member 8, which has L-shaped sections to contact with the insides of the rear plate 4 and side plates 5 and 6, being installed at the top and the bottom of this body 1, a door frame 2, which is attached removably to the front ends of a pair of side plates 5 and 6 of the body 1, and a door 3, which is attached freely of opening and closing to this door frame 2. Furthermore, the insides of the tops and the bottoms of the rear plate 4 and the side plates 5 and 6 of the body 1 are bent so that they may be bends over half turn to catch the reinforcing member 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel box such as a distribution panel or a control panel.

[0002]

2. Description of the Related Art Generally, a panel box such as a distribution panel or a control panel of this type is provided with a back plate which is attached to a wall surface by bending one sheet metal and four surroundings of the back plate. A box-shaped main body with the four side plates, a door frame made by bending a sheet metal attached to the front opening edge of the main body, and a door that is openably and closably attached to the door frame. It is composed of.

[0003]

In order to secure the strength of the main body or the door frame, the above-mentioned panel box has a large thickness of the sheet metal constituting the main body, but this causes the main body to become thicker. Alternatively, the door frame, or even the entire board box, becomes heavy, which makes transportation or installation work extremely difficult.

On the other hand, when the external electric wire is introduced into the board box, since the main body has the four side plates, it is necessary to form the electric wire insertion hole in the side plate. Therefore, in order to facilitate the introduction of the external electric wire, it is also possible to remove the upper and lower side plates in advance and leave the main body in a substantially U-shaped cross section consisting of the back plate and a pair of side plates continuous on both sides of this back plate. However, since the strength of the main body, especially the strength of the pair of side plates, becomes weaker, it is necessary to further increase the plate thickness of the sheet metal, and it has not yet been possible to reduce the weight.

Therefore, an object of the present invention is to reduce the weight of the main body or the frame while ensuring the desired strength of the main body or the frame, simplify the transportation or installation work, and facilitate the wiring work. It is to provide a board box that can.

[0006]

According to a first aspect of the present invention, there is provided a board box which comprises a main body having a back plate and a pair of side plates continuous on both sides thereof, and an inner surface of the back plate and the side plates which are mounted on upper and lower ends of the main body. A reinforcing member having an L-shaped portion in contact with the main body, a door frame detachably attached to the front ends of a pair of side plates of the main body, and a door openably and closably attached to the door frame. The tip end portions of the plate and the side plate are bent inward so as to bend at least more than half a turn, and the reinforcing member is held.

According to a second aspect of the present invention, in the board box according to the first aspect, the door frame is composed of a frame piece that forms four sides and a substantially L-shaped corner reinforcing piece that connects the frame pieces to each other. The corner reinforcing plates are brought into contact with the back side of the frame pieces connected to each other, and both side edges of the frame pieces are bent to the back side so that the bending exceeds at least half a turn, and the corner reinforcing pieces are held. It will be.

[0008]

According to the board box of the first aspect, since the top and bottom of the main body are open, wiring can be facilitated when conducting wiring work by removing the door frame. Further, since the main body is provided with the reinforcing member and the curling portion, the main body can be formed of a thin plate without reducing the strength, and the weight can be reduced. Moreover, since the reinforcing member is held by the bent portions of the back plate and the side plate of the main body, the reinforcing member can be easily attached, and the inward bent portion can protect the clothing of the electric wire.

According to the board box of claim 2, claim 1
In addition to the above function, the corner reinforcing piece and the bent portion can form the frame piece with a thin plate without lowering the strength and can reduce the weight, and the bent portion can protect the wire coating.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. That is, this board box is composed of the main body 1,
It has a door frame 2, a door 3, and a reinforcing member 8. The main body 1 has a back plate 4 and a pair of side plates 5 and 6 continuous on both sides thereof, and a bending process for bending the upper and lower edges of the side plates 5 and 6 and the back plate 4 inward about one and a half revolutions. The part 60 is formed. As shown mainly in FIGS. 3 and 4, the main body 1 of the embodiment is formed by bending a thin plate into a U-shape, and the bending portion 60 is bent inward almost all over the periphery. . In this case, the back plate 4 is provided with the wall surface mounting holes 11 and 14 and the internal device receiver 15.

The reinforcing member 8 has an L-shaped portion held by the bent portions 60 of the back plate 4 and the side plates 5 and 6, but in the embodiment, it has a U-shaped cross section and is shown in FIGS. 4 and 10 to 12. As shown, it is formed in a substantially U-shape including the L-shaped portion. On the upper end side of the main body 1, make the U-shaped section downward,
The lower end side is held by the bending portion 60 with the U shape facing upward. At this time, as shown in FIGS. 7 to 9, the outer surface of the reinforcing member 8 abuts on the inner surfaces of the side plates 5 and 6 and the back plate 4, and the bending portion 60 is wound around the inner surface of the reinforcing member 8 and the end portion thereof. 60a enters the inside of the reinforcing member 8 and its tip is in contact with the inner side surface. Then, a frame mounting portion 9 having a screw hole as an example is provided at the front end portion of the reinforcing member 8.

The reinforcing member 8 is positioned in contact with the inner surfaces of the side plates 5, 6 and the back plate 4 of the main body 1, and the tip portions of the side plates 5, 6 and the back plate 4 are bent inward. Thus, the bent portion 60 is formed and the reinforcing member 8 is held. In the embodiment, the bending portion 60 is bent for about one and a half rotations in order to secure sufficient strength of the main body 1, but as long as the bending is at least more than 1/2 rotation. The reinforcing member 8 can be held, and a space can be formed inside the bending portion 60 even in the intermediate portion of the back plate 4 where the reinforcing member 8 does not exist, and the proper strength of the main body 1 can be secured.

The inner unit 16 attached to the inner unit receiver 15 has an inner unit frame 17, a breaker 18, a bar 19, an inner lid 20 and the like as shown in FIG. Although a lid for preventing dust is provided in the upper and lower openings after passing the electric wire, the lid is not limited to metal and can be made of a material such as plastic or rubber that can be easily processed. The door frame 2 is detachably attached to the front end portions of the pair of side plates 5 and 6. As shown in FIG. 14, the door frame 2 of the embodiment is composed of frame pieces 21 to 24 forming the four sides thereof and L-shaped corner reinforcing pieces 25 to 28 connecting these frame pieces 21 to 24 with each other. As shown in FIG. 17 and FIG. 18, the frame pieces 21 to 24
Is bent on both sides by 3/4 turn on one side and 5 / on the other side.
The corner reinforcing pieces 25 to 28 have a bent portion 61 that is bent four times, and the side portions thereof are held by the frame pieces 21 to 24. Further, the frame pieces 21 to 24 and the corner reinforcing pieces 25 to 28
And are connected by caulking (58) as shown in FIGS.

The bending portion 61 has at least a half.
Corner bending piece 2 for bending that exceeds rotation
5 to 28 can be held, and a space is formed inside the bent portion 61 even in the middle portion of the frame pieces 21 to 24 where the corner reinforcing pieces 25 to 28 do not exist, so that the door frame 2 can have an appropriate strength. It becomes possible to secure. Further, on the corner reinforcing pieces 25 and 28, the hinge attachment portion 3 provided with the door 3 rotatably provided.
Has 0. The hinge mounting portion 30 projects forward of the door frame 2 and has a shaft hole 51 formed at its tip. Further door frame 2
A slit (not shown) is formed at a substantially central position of the frame piece 22, the lock receiver 35 is passed through the slit, and the base end bent portion is fixed to the frame piece 22 by caulking (58). Then, through the mounting holes 31 of the corner reinforcing pieces 25 to 28 and the mounting holes 32 of the frame pieces 21 to 24 which are aligned with the mounting holes 31, the frame mounting portion 9 of the reinforcing member 8 of the main body 1 is detachably mounted by the mounting screws 52.

The door 3 is attached to the door frame 2 so as to be openable and closable. The door 3 of the embodiment has a door plate 37 as shown in FIG.
Is bent inward at the peripheral edge of the
Is installed. Further, the corner member 38 is provided with a pair of bearings 43 and 44, and the shaft 45 is rotatably passed through the holes of the bearings 43 and 44. The shaft 45 is provided with an operating rod 47 for removing the door at a right angle to the shaft 45 between the bearings 43 and 44, and a coil spring 46 is passed through the shaft 45 at a position between the bearings 43 and 44 to operate the operating rod at one end thereof. 47, thereby pushing the operating rod 47 toward the bearing 44 and projecting the end portion 45a of the shaft 45 outward from the bearing 43. Further, the lock / handle 50 that is locked to the lock receiver 35
Is provided through the door plate 37.

A main body 1'having the same structure as the box,
A box having a door frame 2'and a door 3'is attached to a wall surface so as to be vertically aligned on the lower side of the box, and one distribution board box is shared by this pair. According to this embodiment, a reinforcing member is fitted to the bent portion 60 of the main body 1, the door frame 2 is attached to the front end portions of the pair of side plates 5 and 6, the door 3 is attached to the door frame 2, and the main body 1 is attached. Mount it on the wall (not shown). in this case,
Since the top and bottom are open, mutual wiring work of the main body 1 when the door frames are connected and attached becomes easy.

Further, the main body 1 has a reinforcing member 8 and a bending portion 6
Since 0 is provided, the main body 1 can be formed of a thin plate without reducing the strength, and the weight can be reduced. Moreover, since the reinforcing member 8 is held by the bent portions 60 of the back plate 4 and the side plates 5 and 6 of the main body 1, the reinforcing member 8 can be easily attached, and the inward bent portion 60 can be used to Can protect the coating.

The door frame 2 is composed of frame pieces 21 to 24 forming the four sides thereof and L-shaped corner reinforcing pieces 25 to 28 for connecting these frame pieces 21 to 24 together.
The corner reinforcing pieces 25 have bending parts 61 on both sides.
Since ~ 28 are held by the frame pieces 21-24, the frame pieces 21-24 can be formed by a thin plate without reducing the strength by the bending portion 61 and the corner reinforcing pieces 25-28, and the weight can be reduced. Along with the bending portion 61, the frame piece 21
˜24 and the corner reinforcing pieces 25 to 28 can be easily connected, and the coating of the electric wire can be protected.

[0019]

According to the board box of the first aspect, since the top and bottom of the main body are open, wiring can be facilitated when conducting wiring work by removing the door frame. Further, since the main body is provided with the reinforcing member and the bending portion, the main body can be formed of a thin plate without reducing the strength, and the weight can be reduced. Moreover, since the reinforcing member is held by the bent portions of the back plate and the side plate of the main body, the reinforcing member can be easily attached, and the inward bent portion can protect the clothing of the electric wire.

According to the board box of claim 2, claim 1
In the above, the frame piece can be formed of a thin plate without lowering the strength due to the corner reinforcing piece and the bending portion, and the weight can be reduced, and the bending portion can protect the wire coating.

[Brief description of drawings]

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

FIG. 2 is a sectional view thereof.

FIG. 3 is a perspective view of a main body.

FIG. 4 is a cutaway exploded perspective view of the main body.

FIG. 5 is a plan view of the main body.

FIG. 6 is a front view of the main body.

FIG. 7 is a partial cross-sectional view of the upper end portion of the main body.

FIG. 8 is a plan view of the main body.

FIG. 9 is a partial front view of the main body.

FIG. 10 is a front view of a reinforcing member.

FIG. 11 is a bottom view of the reinforcing member.

FIG. 12 is a side view of a reinforcing member.

FIG. 13 is a perspective view seen from the inside of the door frame.

FIG. 14 is a broken exploded perspective view of a door frame.

FIG. 15 is a front view of a door frame.

FIG. 16 is a sectional view of a caulked portion.

17 is a cross-sectional view taken along the line AA of FIG.

18 is a sectional view taken along line BB of FIG.

FIG. 19 is a perspective view seen from the inside of the door.

[Explanation of symbols]

 1 Main body 2 Door frame 3 Door 4 Back plate 5,6 Side plate 8 Reinforcing member 60 Bending part

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshiaki Enami 2-3 Wakabayashi-cho, Yao-shi, Osaka Prefecture Enami Seiki Co., Ltd.

Claims (2)

[Claims] 1. A main body having a back plate and a pair of side plates continuous to both sides thereof, a reinforcing member having L-shaped portions provided at upper and lower ends of the main body and abutting inner surfaces of the back plate and the side plates, and the main body. A pair of side plates that are detachably attached to the front ends of the side plates, and a door that is openably and closably attached to the door frame. A board box, characterized in that it is bent so that the bending exceeds rotation, and the reinforcing member is held. 2. The door frame is composed of a frame piece forming four sides and a substantially L-shaped corner reinforcing piece connecting the frame pieces to each other,
A corner reinforcing plate is brought into contact with the back side of the frame pieces connected to each other, and both side edges of the frame pieces are bent to the back side so that the bending is more than half a turn, and the corner reinforcing pieces are held. The board box according to claim 1, wherein the board box is held.