JP3567746B2 - Switchboard - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board in which an inner lid for closing an electric device is pivotally supported on an edge of an opening of a box.
[0002]
[Prior art]
The opening of the box housing the electrical devices such as the main switch and the branch switch can be opened and closed by the inner lid provided with a hole for projecting the operation part of the electrical device, and the inner lid can be opened and closed by the outer lid. There is a closed distribution board (for example, Japanese Utility Model Laid-Open No. 5-2512).
[0003]
[Problems to be solved by the invention]
However, this distribution board has a structure for preventing the inner lid from being opened further when the inner lid is fully opened, but does not have a structure for preventing the inner lid from closing. For this reason, the distribution board is laid on the floor and the inner lid is kept open.When vibration or impact is applied to the inner lid during inspection and wiring work of the internal electrical equipment in this state, There is a danger that the inner lid may rotate in the closing direction and the hand may be caught between the inner lid and the box.
[0004]
In this case, it is conceivable to make the inner lid detachable and remove the inner lid during the operation, but the operation becomes troublesome.
Therefore, an object of the present invention is to prevent the inner lid from closing when the inner lid is open, to prevent a hand from being caught between the box and the inner lid, and to improve workability and safety. The purpose of this is to provide a distribution board which aims at.
[0005]
[Means for Solving the Problems]
The distribution board according to claim 1, wherein the box has an opening on one surface and houses an electric device therein, and a hole for projecting an operation unit of the electric device, and a rim of the opening of the box. An inner lid rotatably supported and movably moved in the direction of the rotation center axis to close the opening of the box, and the inner lid provided in the box and with the inner lid opened. When the inner lid is moved to one of the rotation center axis directions, the inner lid is restricted from rotating in the closing direction, and the inner lid is moved to the other side in the rotation center axis direction while the inner lid is opened. An inner lid rotation restricting member that allows the lid rotation restricting member to rotate in the closing direction, and an outer lid that is openably and closably attached to the box outside the inner lid. .
[0006]
According to the distribution board according to the first aspect, when the inner lid of the box body is opened and moved in one of the rotation center axis directions, the inner lid is prevented from contacting the inner lid rotation regulating member and being closed. You. Therefore, it is possible to prevent the inner lid from being carelessly closed at the time of wiring or inspection work on the floor, such as before shipping the distribution board, thereby improving safety and workability.
According to a second aspect of the present invention, in the power distribution panel according to the first aspect, the inner lid rotation restricting member is provided integrally with a pivot point for pivotally supporting the inner lid.
[0007]
According to the distribution board of the second aspect, in addition to the same effects as those of the first aspect, the work of attaching the inner lid rotation restricting member and the pivot point to the box becomes easy.
According to a third aspect of the present invention, in the second aspect, the inner lid rotation restricting member is attached to both sides of the opening of the box in a wall-mounted state .
According to the distribution board described in claim 3, in addition to the same effect as in claim 2, it is possible to select any of left-opening, right-opening, and double-opening.
[0008]
According to a fourth aspect of the present invention, there is provided the distribution board according to the second or third aspect, wherein the inner lid rotation restricting member hooks a latch hook of the inner lid which holds the closed state of the inner lid. It has a hole.
According to the distribution board described in claim 4, in addition to the same effect as in claim 2 or claim 3, it can also serve as a latch when the inner lid is closed, and it is not necessary to separately provide a hook portion.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
One embodiment of the present invention will be described with reference to FIGS. That is, the distribution board includes the box 1, the inner lid 2, the inner lid rotation restricting member 3, and the outer lid 4.
The box 1 has an opening 5 on one surface, and houses an electric device 6 (see FIG. 8) inside. As shown in FIG. 8, the box 1 of the embodiment includes a base 7 attached to a wall surface and a frame 9 forming a peripheral side wall of the base 7, and the frame 9 is attached to the base 7 by a frame attaching member 10. ing. As shown in FIG. 7, the frame 9 is formed by connecting a vertical frame piece 11 and a horizontal frame piece 12 at their ends. 13 is a cap for closing both ends of the vertical frame piece 11. As shown in FIG. 8, the electric device 6 includes a main switch 15 and a number of branch switches 16 connected to the main switch 15 via a bar 14. 8 is a guide for the frame 9.
[0010]
The inner lid 2 has a hole 19 (see FIG. 9) through which the operating portions 15a and 16a of the electric device 6 protrude, and is rotatable around the edge of the opening 5 of the box body 1 and is movable in the rotation center axis direction. To close the opening 5 of the box 1. In the embodiment, the pivot point on the side of the box 1 is constituted by a shaft 21 at one end (lower side when mounted on a wall) on one side of the opening 5 and a bearing hole at the other end (upper side when mounted on a wall). 22. One end of the inner cover 2 is formed by a shaft hole 23 that fits into the shaft 21, and the other end is provided with a shaft rod 24 that can be fitted into and removed from the bearing hole 22. Reference numeral 25 denotes a support for slidably supporting the shaft 24, and reference numeral 26 denotes an operation knob provided on the shaft 24. FIG. 4 shows a mounting process of the inner cover 2. As shown in FIG. 4, the mounting side of the inner cover 2 is inclined, the shaft hole 23 is fitted to the shaft 21, and the shaft 24 is operated by the operation knob 26. Is retracted, the tip of the shaft rod 24 is aligned with the bearing hole 22, and in this state, the operating knob 26 is operated to protrude the shaft rod 24 and fit into the bearing hole 22. This state is the state shown in FIG. 1, and the inner lid 2 can be rotated around the shaft 23 and the shaft rod 24 and closed as shown in FIG. Reference numeral 31 denotes a hook for holding the inner lid 2 in a closed state, and 32 denotes a handle of the inner lid 2 (see FIG. 9).
[0011]
The inner lid rotation restricting member 3 restricts the inner lid 2 from rotating in the closing direction when the inner lid 2 is moved to one side in the rotation center axis direction provided on the box body 1. The inner lid rotation restricting member 3 of the embodiment is attached to the horizontal frame piece 12 of the frame 9. In this case, the inner lid rotation restricting members 3 are attached to both ends of each of the upper and lower horizontal frame pieces 12 so that the inner lid 2 is opened rightward in FIG. Also, a pivot point on the side of the box 1 for pivotally supporting the inner lid 2 is provided integrally with the base of the inner lid rotation restricting member 3, and a latch hook portion of the inner lid 2 for holding the closed state of the inner lid 2. A latch hook hole 28 for hooking 31 is formed in the inner lid rotation restricting member 3. Therefore, when operating the hook portion 31 in the closed state of the inner lid 2, as shown in FIG. 5 in the hook hole 28 in the case of right-opening formed in the lid rotation regulating member 3 in the-opening left as shown in FIG. The claw 31a of the hook portion 31 is hooked and the closed state is maintained.
[0012]
Further, a hook 50 is provided at the base of the inner lid rotation restricting member 3 attached to the lower horizontal frame piece 12 in the state where the distribution board is mounted on the wall surface, for example, as shown in FIG. The hook 50 is hooked on a hook hole 10 a at the upper end of the frame attachment member 10 of the base 7 to attach the frame 9 to the base 7. As shown in FIGS. 7 and 8, the horizontal frame piece 12 on the upper side of the frame body 9 is provided with a locking receiving member 51, and the locking receiving member 51 engages with the frame mounting member 10 provided on the base 7. The frame 9 is locked and attached to the pawl portion 10b by its own weight.
[0013]
With the inner lid 2 attached as shown in FIG. 1 and the inner lid 2 opened, the direction shown by the arrow in FIG. 2 with the inner lid 2 as one of the central axis directions (upward when the wall of the box 1 is mounted) At one end of the inner lid 2, the edge portion 2a contacts the inner lid rotation restricting member 3 as shown in FIG. 3, and at the other end, the support 25 moves the inner lid rotation restricting member as shown in FIG. At 3, the closing of the inner lid 2 is restricted as shown in FIG. For this reason, the work of checking and wiring the electric device 6 with the distribution board placed on the floor can be performed safely. When the distribution board is mounted on the wall surface, the shaft 21 side is located at the lower position, so that the inner lid 2 moves in the direction opposite to the arrow in FIG. 2 by its own weight, and the inner lid 2 can be freely opened and closed.
[0014]
The outer lid 4 is attached to the box 1 outside the inner lid 2 so as to be openable and closable. In the embodiment, for example, as shown in FIG. 9, mounting portions 40 and 41 are provided above and below one side of the front surface of the frame body 9. For example, as shown in FIG. 7, the lower mounting portion 40 has a support shaft 42 projecting therefrom, and the upper mounting portion 41 has a shaft support hole 43. A bearing piece 44 having a shaft hole fitted to the support shaft 42 is attached to the inner surface of the lower end of the outer lid 4, and a shaft bar 45 fitted to the shaft support hole 43 is projected downward from the inner surface of the upper end. I have. Therefore, when the outer cover 4 is brought close to the box 1 and the shaft rod 45 is fitted into the shaft support hole 43 and the shaft hole is fitted into the support shaft 42, the outer cover 4 is attached to be able to open and close.
[0015]
【The invention's effect】
According to the distribution board according to the first aspect, when the inner lid of the box body is opened and moved in one of the rotation center axis directions, the inner lid is prevented from contacting the inner lid rotation regulating member and being closed. You. Therefore, it is possible to prevent the inner lid from being carelessly closed at the time of wiring or inspection work on the floor, such as before shipping the distribution board, thereby improving safety and workability.
[0016]
According to the distribution board of the second aspect, in addition to the same effects as those of the first aspect, the work of attaching the inner lid rotation restricting member and the pivot point to the box becomes easy.
According to the distribution board described in claim 3, in addition to the same effect as in claim 2, it is possible to select any of left-opening, right-opening, and double-opening.
According to the distribution board described in claim 4, in addition to the same effect as in claim 2 or claim 3, it can also serve as a latch when the inner lid is closed, and there is no need to separately provide a hook portion.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing a state in which an inner cover of an embodiment of the present invention can be opened and closed.
FIG. 2 is a partial cross-sectional view showing a state in which the inner lid is moved in a rotation center axis direction such that a closing direction of the inner lid is regulated.
FIG. 3 is a partially enlarged view of FIG.
FIG. 4 is a partial sectional view showing a process of attaching the inner lid.
FIG. 5 is a cross-sectional view in a state where an inner lid is closed.
FIG. 6 is a partially enlarged view of a state where an inner lid is opened.
FIG. 7 is an exploded perspective view of the frame.
FIG. 8 is an exploded perspective view showing a state where a frame is removed from a base.
FIG. 9 is a perspective view showing a state in which an outer lid of the distribution board is opened.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Box 2 Inner lid 3 Inner lid rotation restricting member 4 Outer lid 5 Opening 6 Electrical equipment 15a, 15b Operation part 19 Hole 21 Shaft 22 Bearing hole 23 Shaft hole 24 Shaft rod 28 Hook hole 31 Hook part

Claims (4)

A box having an opening on one surface and containing an electric device therein, and a hole having a hole for projecting an operation unit of the electric device, the opening of the box being rotatable at the edge of the opening, and in the direction of the center axis of rotation. An inner lid that is movably pivotally supported to close the opening of the box, and that the inner lid is provided in the box and is moved in the rotation center axis direction in a state where the inner lid is opened. When the inner lid is moved to the other side in the direction of the rotation center axis while the inner lid is open, the inner lid rotation restricting member is rotated in the closing direction. A distribution board comprising: an inner lid rotation restricting member that permits movement ; and an outer lid that is openably and closably attached to the box outside the inner lid. The distribution board according to claim 1, wherein the inner lid rotation restricting member is provided integrally with a pivot point for pivotally supporting the inner lid. The distribution board according to claim 2, wherein the inner lid rotation restricting member is attached to both sides of the opening of the box in a wall-mounted state . 4. The distribution board according to claim 2, wherein the inner lid rotation restricting member has a latch hook hole for hooking a latch hook portion of the inner lid that holds the inner lid in a closed state. 5.

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