JP3270139B2 - Panel box door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A door body is usually formed of a thin plate.
If the left and right sides of the door are formed into a curved surface with a large curvature, there is no corner at the time of opening and closing operation, so it is easy to operate and the appearance is excellent. When a plurality of distribution boards are vertically arranged, the upper and lower ends of the door are made horizontal to reduce the gap, so that the space occupied by the wall can be reduced and the appearance can be improved. Further, the strength of the peripheral portion of the door body can be maintained by the horizontal portion and the cylindrical portion.

[0003]

However, the door body has a problem that the appearance is poor and the strength is weak because a large gap is formed at the corner. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a door of a panel box which can reinforce a corner portion and improve the appearance thereof and can be easily assembled.

[0004]

The door of the panel box according to the present invention has a tubular portion formed by inwardly bending both left and right sides, has a curling portion at an edge thereof, and has a central upper and lower end respectively. A door body having a horizontal portion formed by bending inward and having connection holes at both ends of the horizontal portion, and a fitting piece fitted to an end of the cylindrical portion at a corner of the door body. And a corner member having a connecting piece overlapping the outer surface of the horizontal portion and caulking the connecting hole with a caulking projection on the connecting piece, and a shaft portion for supporting the door body.

[0005]

According to the structure of the present invention, the fitting piece of the corner member is fitted into the cylindrical portion of the door body, and the connecting piece is overlapped on the horizontal portion while the caulking projection is fitted into the connecting hole, thereby forming the door body. Swage the protrusion from the back side. In this case, since the tubular portion can be closed by the fitting piece of the corner member, the appearance becomes better, and the connecting piece is attached to the horizontal portion in a state where the fitting piece is fitted to the tubular portion. The tubular part is formed by bending inward on both the left and right sides of the door body, so the aesthetic appearance of the door is improved and the operability when opening and closing the door is good. Since the curling part is formed, the bent part of the tubular part on the back side of the door main body does not get caught, so that it is possible to prevent damage to hands, electric wires, etc. , The gap between the plurality of distribution boards arranged vertically can be reduced, the space occupied by the mounting surface can be reduced, and the appearance can be improved.

[0006]

An embodiment of the present invention will be described with reference to FIGS. That is, the door of this panel 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,
It has a curling part 10 at its edge, a horizontal part 4 formed by bending the upper and lower ends of the center inward, and a connecting hole 11 at both ends of the horizontal part 4.
In the embodiment, the door body 1 is formed of one thin plate. The cylindrical portion 3 has a large curvature only on the front surface of the door body 1 and forms a flat surface portion 9 on the back surface with respect to the opening frame 28 of the box 27, and the curling portion 10 includes the fitting piece 6.
Is bent into a cylindrical shape so that a part of it is involved. The horizontal portion 4 is formed by bending at a substantially right angle from the front side of the door main body 1, and a folded piece 5 is formed at an end edge thereof by curling. In this case, the horizontal portion 4 is larger than the end face of the cylindrical portion 3.
Is shifted upward at the upper end of the door main body 1 and lower at the lower end of the door main body 1.

The corner member 2 has a fitting piece 6 fitted to the end of the tubular part 3 at the corner of the door body 1 and a connecting piece 7 overlapping the outer surface of the horizontal part 4 to form a connecting hole. The connecting piece 7 has a caulking projection 17 which is swaged to 11. The corner member 2 of the embodiment is formed of a material different from that of the door main body 1 such as aluminum die cast. The fitting piece 6 is a substantially U-shaped fitting wall 12 having an outer peripheral surface formed along the inner peripheral surface of the cylindrical portion 3.
And an end wall 18 provided at an end of the fitting wall 12, and a protruding ridge 1 to be rolled into the curling portion 10 on one side of the fitting wall 12.
3 and a pair of shaft holes 19 formed on the inner surface of the fitting wall 12 in the fitting direction and having one shaft hole 19 penetrating through the end wall 18.
And a support groove 16 formed in a radial direction on the surface of the bearing 15 on one side of the coupling 15 in the fitting direction on the surface facing the bearing 14. The connecting piece 7 is continuous with the fitting piece 6 via a step 20 higher than the end wall 18. A stopper 21 is formed continuously at an end of the step portion 20 on the front side of the door body 1 so as to protrude so as to overlap with the shaft hole 19 when viewed from the front side of the door body 1. Further, a hanging piece 22 hanging from the front surface of the door body 1 of the corner member 2 to the cylindrical portion 3 is formed.

The shaft 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 connection hole at a predetermined position between the bearings 14 and 15, and an operation rod 24 is fitted into the connection hole. A coil spring 25 is passed through the shaft 23, and 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 and faces the shaft hole 19, and the operating rod 24 is locked on the surface of the bearing 15. In this case, when the operating rod 24 is locked on the surface of the bearing 15, the end of the shaft 23 is exposed almost flush with the shaft hole 19, but the operating rod 24 is engaged with the support groove 16. Then axis 23
End protrudes from the shaft hole 19. In this protruding state, the shaft 23 can be supported by the shaft hole of the hinge 26, and the operating rod 24
The shaft 23 can be sunk into the shaft hole 19 and removed from the hinge 26 by removing the hinge 23 from the support groove 16 by manipulating, and the door can be removed. In this case, when the stopper 21 hits the side surface of the hinge 26, the opening amount of the door is determined to be about 100 degrees.

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

According to this embodiment, the cylindrical portion 3 of the door body 1
The connecting piece 7 is overlapped with the horizontal portion 4 while the caulking projection 17 is fitted into the connecting hole 11.
From the back side of the door main body 1, the jig is used to caulk the projection 17 to prevent the door body 1 from being pulled out. In this case, the fitting piece 6 of the corner member 2
As a result, the tubular portion 3 can be closed, so that the appearance is improved. The connecting piece 7 is attached to the horizontal portion 4 in a state where the fitting piece 6 is fitted to the tubular portion 3, so that the corner portion can be reinforced, and Since the cylindrical portion 3 is formed by curving inward at a large curvature on both the left and right sides of the door main body 1, the aesthetic appearance of the door is improved, and the operability at the time of opening and closing the door is good, and the cylindrical portion 3 is bent. Since the curling portion 10 is formed at the end, the bent portion of the tubular portion 3 of the door main body 1 does not catch the hand, electric wires, etc., and the upper and lower ends of the door main body 1 are bent inward. Since the horizontal portion 4 is formed, the mutual gap when a plurality of distribution boards are arranged vertically can be reduced,
The space occupied by the mounting surface can be reduced and the appearance can be improved.

[0011]

As described above, the door of the panel box according to the present invention has a good appearance since the tubular portion can be closed by the fitting piece of the corner member, and the door is connected with the fitting piece fitted to the tubular portion. Since the piece is attached to the horizontal part, the corner part can be reinforced, and furthermore, since the cylindrical part is formed by bending inward on both the left and right sides of the door body, the appearance of the door is improved and the operation when opening and closing the door Because the curled portion is formed at the bent end of the tubular portion, there is no catch due to the bent end of the tubular portion on the back side of the door body, and it is possible to prevent damage to hands, electric wires, etc. Since each horizontal section is formed by bending inward, the mutual gap when a plurality of distribution boards are arranged vertically can be reduced, the space occupied by the mounting surface can be reduced, and the appearance can be improved. This has the effect.

[Brief description of the drawings]

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

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

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

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

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

FIG. 6 is a partially sectional plan view of a partially broken portion thereof.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door main body 2 Corner member 3 Cylindrical part 4 Horizontal part 6 Fitting piece 7 Connection piece 10 Curling part 11 Connection hole 17 Caulking projection 23 Axle

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02B 1/40 H02B 1/38

Claims (1)

(57) [Claims] 1. A horizontal portion formed by curving inwardly on both left and right sides, having a cylindrical portion formed by curving inward at both ends, and having curling portions at the edges thereof, and bending the upper and lower ends of the center inwardly. A door body having connection holes at both ends of the horizontal portion, and a connection piece having a fitting piece fitted to an end of the cylindrical portion at a corner of the door body and overlapping an outer surface of the horizontal portion. A door of a board box, comprising: a corner member having a caulking projection formed on the connecting piece, the caulking being provided in the connecting hole, and a shaft portion supporting the door body.