JPH06105418A - Door of panel box - Google Patents

Abstract

PURPOSE:To provide the door of a panel box, in which the corner can be reinforced and also the external appearance can be improved, and besides the assembling of which is easily. CONSTITUTION:This is equipped with a door body 1, which has tubular parts 3 being made by curving both right and left sides inward and has curl parts 10 at the margins and has horizontal parts 5 being made by bending the top and the bottom of the center inward, respectively, and has coupling holes 11 at both ends of the horizontal parts 4, corner members 2, which have engaging pieces 16 to engage with the ends of the tubular parts 3 at the corners of the door body 1 and have coupling pieces 7 to lie upon the external surfaces of the horizontal parts 4 and have, at the coupling pieces 7, calking projections 17 to be set tightly in the coupling holes 11, and pivots 23, which pivot the door body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel box door applied to a distribution board, a control panel or the like.

[0002]

2. Description of the Related Art The door body is usually formed of a thin plate,
If the left and right sides of the door are formed with curved surfaces with a large curvature, there are no corners when opening and closing, so it is easy to operate and has an excellent appearance. Further, when a plurality of distribution boards are arranged vertically, if the upper and lower ends of the door are horizontal and the gap is made small, the space occupied by the wall can be reduced and the appearance can be improved. The strength of the peripheral portion of the door body can be maintained by the horizontal portion and the tubular portion.

[0003]

However, this door body has a problem in that it has a poor appearance due to the large gaps formed in the corners and is weak in strength. Therefore, an object of the present invention is to provide a door for a board box, which can reinforce the corner portion, improve its appearance, and can be easily assembled.

[0004]

A door of a board box according to the present invention has a tubular portion formed by bending both left and right sides inward, has a curling portion at its edge, and has a central upper and lower end respectively. A door body having a horizontal portion formed by bending inwardly and having connecting holes at both ends of the horizontal portion, and a fitting piece that fits into an end portion of the tubular portion at a corner portion of the door body. And a corner member that has a connecting piece that overlaps the outer surface of the horizontal portion and that has a caulking protrusion that is caulked in the connecting hole in the connecting piece, and a shaft portion that axially supports the door body.

[0005]

According to the structure of the present invention, the fitting piece of the corner member is fitted in the tubular portion of the door body, and the connecting piece is superposed on the horizontal portion while fitting the caulking projection in the coupling hole. From the back side, crimp the crimp protrusion. In this case, since the tubular portion can be closed by the fitting piece of the corner member, the appearance is improved, and the connecting piece is attached to the horizontal portion with the fitting piece fitted in the tubular portion. Since it can be reinforced, and the tubular part is formed by bending inward on both left and right sides of the door body, the appearance of the door is improved and the operability at the time of opening and closing the door is good, and the bending end of the tubular part is Since the curling part is formed, there is no catching due to the bent end of the tubular part on the back side of the door body and damage to hands and electric wires can be prevented, and by bending the center upper and lower ends of the door body inward, horizontal parts Since a plurality of distribution boards are arranged vertically, the mutual gap can be reduced, the space occupied by the mounting surface can be reduced, and the appearance can be improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. That is, the door of this board box is the door body 1
And a corner member 2. The door body 1 has a tubular portion 3 formed by bending both left and right sides inward,
A curling portion 10 is provided on the end edge, a horizontal portion 4 is formed by bending the center upper and lower ends inward, and connecting holes 11 are provided at both ends of the horizontal portion 4.
In the embodiment, the door body 1 is formed by one thin plate. The cylindrical portion 3 has a large curvature only on the front surface of the door body 1, and the rear surface side forms a flat plane portion 9 with respect to the opening frame 28 of the box 27, and the curling portion 10 includes the fitting piece 6
It is bent into a cylindrical shape so as to involve a part of it. The horizontal portion 4 is formed by bending the door body 1 from the front surface side at a substantially right angle, and the folded-back piece 5 is formed by curling at the edge thereof. In this case, the horizontal portion 4 is larger than the end surface of the tubular portion 3.
The outer surface of the door main body 1 is shifted upward so that it is located at the upper end of the door body 1 and downward at the lower end of the door body 1.

The corner member 2 has a fitting piece 6 that fits into the end of the tubular portion 3 at the corner of the door body 1, and a connecting piece 7 that overlaps the outer surface of the horizontal portion 4 and has a connecting hole. The connecting piece 7 has a crimping projection 17 which is crimped onto the connecting piece 11. The corner member 2 of the embodiment is made of a material different from that of the door body 1 such as aluminum die cast. The fitting piece 6 has a substantially U-shaped fitting wall 12 whose outer peripheral surface is formed along the inner peripheral surface of the tubular portion 3.
And an end wall 18 provided at an end of the fitting wall 12, and a ridge portion 1 to be wound around the curling portion 10 on one side of the fitting wall 12.
3, and a pair of bearings 14, 15 formed in the inner surface of the fitting wall 12 in the fitting direction and one of which has a shaft hole 19 penetrating the end wall 18.
And a support groove 16 formed in the radial direction on the surface of the bearing 15 on the side of the coupling piece in the fitting direction facing the bearing 14. The connecting piece 7 is continuous with the fitting piece 6 via a step portion 20 higher than the end wall 18. Further, a stopper 21 is continuously formed at an end portion of the step portion 20 on the front surface side of the door body 1 so as to overlap with the shaft hole 19 when viewed from the front surface side of the door body 1. Further, a hanging piece 22 that hangs from the front surface of the door body 1 of the corner member 2 to the tubular portion 3 is formed.

The shaft portion of the door is formed as a part of the corner member 2. That is, the shaft 23 is inserted into the bearings 14 and 15 of the upper and lower corner members 2 on the right side of the door body 1. The shaft 23 has a connecting hole at a predetermined position between the bearings 14 and 15, and an operating rod 24 is fitted into the connecting hole. A coil spring 25 is passed through the shaft 23. One end of the coil spring 25 is locked to the bearing 14 and the other end is locked to the operating rod 24. The shaft 23 is pushed by the spring force of the coil spring 25 to face the shaft hole 19, and the operating rod 24 is locked to the surface of the bearing 15. In this case, when the operating rod 24 is locked to the surface of the bearing 15, the end of the shaft 23 is exposed to the shaft hole 19 in a substantially flush manner, but the operating rod 24 is engaged with the support groove 16. Then axis 23
The end portion of is projected from the shaft hole 19. In this protruding state, the shaft 23 can be pivotally supported in the shaft hole of the hinge 26, and the operating rod 24
Is operated to remove from the support groove 16, the shaft 23 can be sunk in the shaft hole 19 and removed from the hinge 26, and the door can be removed. In this case, the stopper 21 hits the side surface of the hinge 26 to determine the opening amount of the door, which is about 100 degrees.

The hinge 26 is provided on the opening frame 28 of the box 27 of the distribution board as shown in FIG. Box 2
7 are mounted on a mounting frame 29 mounted on a wall so that one pair of them are vertically overlapped with each other.
0 and the like are arranged and wired. Further, the door body 1 is provided with a reinforcing member 31 at the center of the back surface and a handle 32 with a lock.

According to this embodiment, the tubular portion 3 of the door body 1
The fitting piece 6 of the corner member 2 is fitted to, and the connecting piece 7 is placed on the horizontal portion 4 while fitting the caulking projection 17 into the connecting hole 11.
A caulking projection 17 is caulked from the back side of the door body 1 with a jig to prevent the door from being pulled out. In this case, the fitting piece 6 of the corner member 2
Since the tubular portion 3 can be closed by means of the above, the appearance is improved, and since the connecting piece 7 is attached to the horizontal portion 4 with the fitting piece 6 fitted in the tubular portion 3, the corner portion can be reinforced. Since the tubular portion 3 is formed by bending the door body 1 inward on both the left and right sides with a large curvature, the aesthetic appearance of the door is improved and the operability at the time of opening / closing the door is good, and the tubular portion 3 is bent. Since the curling portion 10 is formed at the end, there is no catching due to the bent end of the tubular portion 3 of the door body 1 and damage to hands and electric wires can be prevented, and the upper and lower ends of the door body 1 are bent inward. Since the horizontal portion 4 is formed, it is possible to reduce the mutual gap when a plurality of distribution boards are vertically arranged,
The space occupied by the mounting surface can be reduced and the appearance can be improved.

[0011]

The door of the board box of the present invention has a good appearance because the tubular portion can be closed by the fitting piece of the corner member, and the door is connected in the state where the fitting piece fits into the tubular portion. Since the piece is attached to the horizontal part, the corner part can be reinforced, and the tubular part is formed by bending inward on both left and right sides of the door body, improving the aesthetics of the door and operating when opening and closing the door Since the curling part is formed at the bent end of the tubular part, there is no catching due to the bent end of the tubular part on the back side of the door body and damage to hands and electric wires can be prevented. Since each of them is bent inward to form a horizontal part, the gap between them can be reduced when a plurality of distribution boards are arranged vertically, the space occupied by the mounting surface can be reduced, and the appearance can be improved. There is an effect.

[Brief description of drawings]

FIG. 1 is an exploded perspective view in which an intermediate portion of an embodiment of the present invention is cut away.

FIG. 2 is a perspective view of a distribution board.

FIG. 3 is a cross-sectional view of a distribution board.

FIG. 4 is a perspective view of the door as viewed from the back side.

FIG. 5 is a partially cutaway rear view of the door.

FIG. 6 is a partially cutaway plan view of a half section.

FIG. 7 is a partially cutaway left side view of a half section.

[Explanation of symbols]

 1 Door Main Body 2 Corner Member 3 Cylindrical Part 4 Horizontal Part 6 Fitting Piece 7 Connecting Piece 10 Curling Part 11 Connecting Hole 17 Caulking Protrusion 23 Shaft

Claims (1)

[Claims] 1. A horizontal portion formed by bending inwardly on both left and right sides, having a curling portion at its edges, and forming a horizontal portion by bending the central upper and lower ends inward. A door main body having connecting holes at both ends of the horizontal portion, and a connecting piece that overlaps an outer surface of the horizontal portion while having a fitting piece that fits into an end portion of the tubular portion at a corner portion of the door main body are provided. A door of a board box including a corner member having a caulking protrusion on the connecting piece, the caulking projection being caulked in the connecting hole, and a shaft portion pivotally supporting the door body.