JP3477997B2 - Switchboard - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board in which an internal unit of a main breaker or a branch breaker is attached to a substrate bridged between two frames.

[0002]

2. Description of the Related Art Generally, in a distribution board of this type, four fixed shaft members which are arranged side by side in the vertical and horizontal directions of the bottom surface of a box body are provided with bearing holes in the vertical direction. Two character-shaped frames are attached to the upper and lower fixed shaft members, respectively, and a board on which internal units such as a main breaker and a branch breaker are attached is bridged between these frames.

The upper and lower sides of the two frames are connected to each other by connecting members, and the wiring work inside the box body can be facilitated by detaching the frame from the box body at the installation site. The connecting member is formed on a flat plate and is attached to the upper and lower surfaces of each frame with screws.

[0004]

According to the distribution board described above, since the connecting member for connecting each frame is formed of a flat plate, in order to penetrate each fixed shaft member into the bearing hole of each frame, There is a problem that it is necessary to connect the frames at the same intervals, and the work of adjusting the intervals between the frames is troublesome.

The present invention has been made in view of the above circumstances, and an object of the present invention is to facilitate the work of adjusting the intervals between the frames for allowing the fixed shaft members to penetrate through the bearing holes of the frames. It is to provide a distribution board.

[0006]

In order to solve the above-mentioned problems, the distribution board according to claim 1 has four fixed shaft members arranged side by side in the vertical and horizontal directions of the bottom surface of the box body. Among the fixed shaft members, there are bearing holes for penetrating two upper and lower fixed shaft members, respectively, and two frames each having a substantially U-shaped cross section that are attached between the upper and lower fixed shaft members. A connecting member that is connected to the vertical surface of the frame at intervals that allow the frame to be attached to each fixed shaft member; and a substrate that is bridged between the frames and that has internal units such as a main breaker and a branch breaker attached. In the provided distribution board, the connecting member is provided with a frame interval positioning piece that is bent in the bottom surface direction and abuts on the facing surface side of each frame.

Furthermore, the distribution board of the first aspect, the lower connecting member of the connecting member of the foregoing, in between the opposing surfaces of at least the frame protruding piece that protrudes below the lower end of each frame A positioning protrusion is provided below the lower two fixed shaft members of the four fixed shaft members so that the lower end of each frame abuts in the state where each fixed shaft member penetrates each bearing hole. There is.

[0008] Claim 2 panelboard description, the positioning projection of one of claims 1, it is constituted provided on a straight line connecting the vertical direction of each two fixed shaft member.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. This distribution board is a box 1
And an outer lid 2 that closes the opening of the box body 1, and an inner lid 3 that is openably and closably supported inside the outer lid 2. Fixed shaft members 4 are attached to the bottom surface of the box body 1, and internal unit blocks 5 as shown in FIG. 2 are attached to these fixed shaft members 4. The inner unit block 5 has two frames 6 and 6, a connecting member 7 attached to the upper and lower sides of these frames 6 and 6, and an inner unit such as a main breaker 8 and a branch breaker 9 and the like. And a substrate 10 that is bridged between 6 and 6.

The fixed shaft members 4 are welded in a state of being arranged side by side in the vertical and horizontal directions of the bottom surface of the box body 1 in FIG. 1, below the lower fixed shaft members 4b and 4b, and in the vertical direction. On the straight line connecting the two fixed shaft members 4a, 4b, each fixed shaft member 4 is inserted into each bearing hole 11 of the frame 6 to be described later.
Positioning projections 12 are provided on which the lower ends 6b and 6b of 6,6 abut.

The frames 6 and 6 are made of a metallic material and have a substantially U-shaped cross section, and as shown in FIG. 3, bearing holes through which the upper and lower fixed shaft members 4a and 4b of the respective fixed shaft members 4 pass. 11 and are attached between the upper and lower fixed shaft members 4a and 4b, respectively.

The connecting member 7 is made of a metallic material like the frames 6 and 6 and is formed into a substantially U-shape as shown in FIG.
The two frames 6 and 6 are connected to the upper and lower surfaces of the frames 6 and 6 at intervals such that they can be attached to the fixed shaft members 4. The connecting member 7 is provided with frame spacing positioning pieces 13 each of which is formed by bending the inside toward the bottom surface of the box body 1,
As shown in FIG. 2, the frames 6 and 6 are brought into contact with the facing surfaces to position the frames 6 and 6 at intervals. Further, elongated holes 14 corresponding to the bearing holes 11 are formed on both sides of the connecting member 7 and are long in the vertical direction. Further, the upper and lower connecting members 7 are provided with projecting pieces 15 that project outward from the upper ends 6a or the lower ends 6b of the frames 6 and 6 between the facing surfaces X of the frames 6 and 6, respectively.

In particular, since the projecting piece 15 of the lower connecting member 7 projects between the facing surfaces X of the frames 6 and 6 below the lower ends 6b and 6b of the frames 6 and 6, FIG. As shown in Figure 6, the above-mentioned positioning protrusion 12 is attached to the lower end 6 of the frame 6,6.
The frame of this positioning protrusion 12 while contacting b and 6b
The movement in the direction between 6 and 6 can be restricted by the projecting piece 15, so that the work of inserting each fixed shaft member 4 into each bearing hole 11 of each frame 6 and 6 is facilitated. Further, since the positioning protrusion 12 is provided on the straight line connecting the two fixed shaft members 4a and 4b in the vertical direction, the bearing holes 11 of the frames 6 and 6 should be aligned directly above the positioning protrusion 12. Then, the fixed shaft member 4 can be passed through the bearing hole 11.
That is, the positioning protrusion 12 serves as a guide for the inner unit block 5 in the left-right direction, and also serves as a position indication of the fixed shaft member 4.

The substrate 10 is made of a metallic material in a flat plate shape and bridged between the frames 6 and 6. Internal components such as a main breaker 8 and a branch breaker 9 are attached to the board 10. Reference numeral 16 is a wiring duct for accommodating electric wire conductors connected to the main breaker 8 and the branch breaker 9, and 17 is a terminal device for connecting a ground wire connected to an external load.

Next, a method of attaching the inner unit block 5 to the fixed shaft member 4 will be described with reference to FIGS. 4 and 5.

That is, first, as shown in FIG. 4, the lower ends 6b and 6b of the frames 6 and 6 are aligned with the positioning protrusions 12. At this time, as described above, the protruding piece 15 of the lower connecting member 7
Thus, the movement of the positioning protrusion 12 in the direction between the frames 6 and 6 is restricted. That is, the positioning protrusion 12 can move only at the Y interval. Next, the elongated hole 14 of the connecting member 7 is aligned right above the positioning protrusion 12 and the fixed shaft member 4 is passed through the bearing hole 11 and the elongated hole 14. Finally, the nut 18 is screwed onto the fixed shaft member 4 from the surface of the connecting member 7 to attach the inner block 5 to the fixed shaft member 4. (FIG. 5) In this embodiment, since the tip of the protruding piece 15 is bent and abutted against the lower ends 6b and 6b of the frames 6 and 6, the vertical alignment of the frames 6 and 6 is performed. It can also be done.

[Brief description of drawings]

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

FIG. 2 is an exploded perspective view of the one shown in FIG.

FIG. 3 is an exploded perspective view showing a frame and a connecting member of FIG. 2;

FIG. 4 is an explanatory view of attaching a frame to a fixed shaft member.

FIG. 5 is an explanatory view showing a state in which the frame of FIG. 4 is attached to a fixing member.

[Explanation of symbols]

1 box 4 Fixed shaft material 6 frames 7 Connection member 8 Master breaker 9-branch breaker 10 board 11 Bearing hole 13 Frame spacing positioning piece

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H02B 1/40-1/42

Claims (2)

(57) [Claims] 1. A box body having four fixed shaft members arranged vertically and horizontally on a bottom surface of the box body, and bearing holes for penetrating two upper and lower fixed shaft members of these fixed shaft members, respectively. 2 and the frame of U-shaped cross section, each being attached between the upper and lower fixed shaft member, consolidated the two frames to upper and lower surface of each of the frames at intervals which may be attached to the fixed shaft member In a distribution board provided with a connecting member and a board having an internal unit such as a main breaker or a branch breaker attached between the frames, the connecting member is bent and formed in a bottom direction. A frame spacing positioning piece that abuts on the opposite surface side of the frame of the above-mentioned frame , and at least each of the connecting members on the lower side of the connecting members
In between the facing surfaces of the frame provided with a protruding piece which protrudes below the lower end of each frame, the four lower two below the fixed shaft member, each bearing a respective fixed shaft member of the fixed shaft member A distribution board characterized in that a positioning protrusion is provided so that the lower end of each frame abuts in a state of being penetrated through the hole. 2. The positioning protrusions are two in each of the vertical direction.
The distribution board according to claim 1, characterized in that kicked set on a straight line connecting the fixed shaft member.