JPH0628887Y2 - Fixing device for internal unit of distribution board - Google Patents

Description

[Technical field] The present invention relates to a device for fixing an inner unit of a distribution board in which a breaker or the like is attached to a box through a frame of an elongated object.

BACKGROUND ART FIG. 6 shows a perspective view of a distribution board of this kind, and FIG. 7 shows a door 1
The perspective view of the state which opened 1 is shown. In the distribution board, a box-shaped box 1 that forms an outer shell and has an open front surface, and a door 11 is attached to the opening surface of the box 1 by a hinge 12 so as to be openable and closable. An inner unit having a breaker or the like is arranged in the box 1, and an inner lid 13 is provided on the front surface of the inner unit so as to be openable and closable. A handle of a breaker of the internal unit projects from the front surface of the inner lid 13 so that only the door 11 can be opened and operated. A handle 14 is provided on the door 11.

FIG. 8 shows the internal unit, and breakers and the like are attached as follows. That is, as shown in FIG.
A substantially U-shaped fixing plate 15 is fixed to the back surface of the box 1 by fixing the head portion 16a of the bolt 16 and projecting the screw portion 16b. A nut 18 is screwed onto the threaded portion 16b of the bolt 16 via a washer 17, and the end of the frame 3 having a U-shaped cross section is attached thereto via a mounting hole 19. The frame 3 is, as shown in FIG.
Two of them are arranged in parallel with the box 1, and the frame 3 is attached at two places at both ends. Further, both ends of a mounting plate 4 having a main breaker 5a and a large number of branch breakers 5b mounted on the upper surface of the frame 3 are attached. The frame 3 is provided with screw holes 20 for attaching the attachment plate 4 in the longitudinal direction at predetermined intervals. Both ends of the mounting plate 4 are formed in a substantially L shape, and the mounting piece 4a is also formed with a through hole 4b similarly to the screw hole 20. In the case shown in FIG. 8, the mounting plate 4 on which the main breaker 5a is mounted is formed with mounting pieces 4a on both sides, and the mounting plate 4 on which the branch breaker 5b is mounted has two mounting pieces on both sides. 4a is formed. The attachment plate 4 is attached to the frame 3 with screws 24. On the right side of the frame 3, a hinge 21 for opening and closing the inner lid 13 is attached.
It is tightened together with a. In FIG. 8, a conductive main bar 22 is wired from the main breaker 5a to the branch breaker 5b side, and the input side of the branch breaker 5b is connected to this main bar 22. Further, a large number of neutral switches 23 are provided below.

In such a conventional example, the frame 3 is fixed at two positions on both ends, and the lower end of the frame 3 is floated and fixed from the box 1 as shown in FIG. There is a problem that the frame 3 bends when a heavy object is placed in the. In addition, the internal unit becomes unstable during construction, and there is a risk that defects such as scratches and cracks may occur in the box 1 and the internal unit during transportation.

[Object of the Invention] The present invention is provided in view of the above-mentioned points, and is an inner unit fixing device for a distribution board, which is intended to securely fix the frame and to firmly attach the inner unit. Is provided.

DISCLOSURE OF THE INVENTION (Structure) The present invention includes a box that constitutes an outer shell, a frame that is substantially U-shaped in cross section, is arranged in parallel with the opening side being the box side, and is bolted to the box at both ends. In an inner unit fixing device for a distribution board having a mounting plate bridged between both frames and respectively screwed to the frame, and a wiring device such as a breaker attached to the mounting plate, a bolt is inserted into the box. A plurality of intermediate fixing plates each having a predetermined length in the longitudinal direction of the frame, and each of which is an intermediate member. By providing a fixing tool that is sandwiched between the fixing plate and the intermediate fixing plate to fix the frame, the intermediate fixing plate supports the frame, and the intermediate fixing plate and the fixing device ensure that the frame is securely attached to the box. strength It is characterized in that it has to be fixed to.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. Incidentally, the gist of the present invention is the mounting and fixing of the mounting plate 4, the frame 3 and the box 1 side, and since the other whole structure is the same as the conventional one, the description of the same parts will be omitted and the gist part will be described. . As shown in FIGS. 1 and 2, a metal intermediate fixing plate 6 fixed to the box 1 with bolts 2 has a substantially L-shaped cross section, and a step portion is formed in the center of one piece. 26 is formed, and the lower surface of the step portion 26 engages with the fixing plate 15 fixed to the box 1, and the screw portion of the bolt 2 is inserted into the insertion hole 7 formed in the step portion 26. Has become. The intermediate fixing plate 6 has a predetermined length with respect to the longitudinal direction of the frame 3, and the stepped portion 26 has the through holes 7 formed at predetermined intervals along the longitudinal direction. Also,
Both sides of the stepped portion 26 serve as a mounting piece 8 on which the lower end of the frame 3 is mounted, and a substantially L-shaped fixing piece 9 is integrally formed from the end of the mounting piece 8.

As shown in FIG. 2, screw holes 25 are formed in the fixing piece 9 at a predetermined interval like the insertion hole 7. The fixing piece 9 is located outside the frame 3, and has the same height as the frame 3 as shown in FIG. As shown in FIG. 3, the metal fixture 10 which is attached to the screw hole 25 of the fixing piece 9 of the intermediate fixing plate 6 with the screw 27 is formed in a flat plate shape, and has through holes 10a, 1
0b are drilled respectively. The mounting plate 4 is formed in the same manner as the conventional one.

Then, the screw portion of the bolt 2 is inserted into the insertion hole 7 of the intermediate fixing plate 6, the step portion 26 is placed on the fixing plate 15, and the nut 29 is screwed to the screw portion via the washer 30. Then, the intermediate fixing plate 6 is fixed to the box 1. Then, the lower end of the frame 3 is placed on the placing piece 8 of the intermediate fixing plate 6,
The screw 27 is inserted into the through hole 10a of the fixing tool 10 and temporarily fixed to the fixing piece 9. Next, the mounting piece 4a of the mounting plate 4 is placed on the frame 3, the screw 28 is inserted through the through hole 4b of the mounting piece 4a and the through hole 10b of the fixing piece 9, and screwed into the screw hole 20 of the frame 3. . Then, the frame 3 is fixed to the box 1 by tightening the temporarily fixed screws 27. The intermediate fixing plate 6 has a large number of insertion holes 7 and screw holes 2.
0 is formed, the position of this insertion hole 7 is changed,
The position of the screw hole 20 can be changed to easily change the mounting position of the mounting plate 4. Further, with this structure, the frame 3 can be firmly fixed to the box 1, so that the fixing strength of the inner lid 13 can be increased.

FIG. 4 shows another embodiment of the method for connecting the intermediate fixing plate 6 and the fixing tool 10, in which an end portion of the fixing tool 10 is bent downward in a substantially L shape to form a hooking piece 31. 31 is hooked on the fixing piece 9 of the intermediate fixing plate 6 so as to be connected and fixed. Further, in FIG. 5, the end of the fixture 10 is extended downward to form a locking piece 33, and the locking hole 32 into which the locking piece 33 is inserted and locked is provided at the end of the intermediate fixing plate 3. Perforated. In both of these embodiments, the intermediate fixing plate 6 and the fixing piece 9 can be easily connected and fixed with one touch without screws.

[Advantages of the Invention] As described above, the present invention includes a box that constitutes an outer shell, a frame that is substantially U-shaped in cross section, is arranged in parallel with the opening side being the box side, and is bolted to the box at both ends. In a distribution panel internal unit fixing device having a mounting plate bridged between both frames and respectively screwed to the frame, and a wiring device such as a breaker attached to the mounting plate, a bolt is attached to the box. A plurality of intermediate fixing plates each having a predetermined length in the longitudinal direction of the frame, and a plurality of intermediate fixing plates each having a predetermined length in the longitudinal direction of the frame. Since it is provided with a fixture that is sandwiched between the intermediate fixing plate and the frame to fix the frame to the intermediate fixing plate, the frame is supported by the intermediate fixing plate and the frame is attached to the box by the intermediate fixing plate and the fixing device. Reliable and strong It can be firmly fixed, the frame does not bend even if a heavy object is placed on the mounting plate as in the past, and since the frame can be firmly fixed, the inside can be stably fixed, It is possible to prevent the box and internal unit from being damaged or cracked during transportation, etc.Furthermore, the mounting parts of the fixtures are formed at predetermined intervals in the longitudinal direction of the frame, so the mounting position of the mounting plate This has the effect of facilitating the change of.

[Brief description of drawings]

FIG. 1 is a sectional view showing a mounting state of an embodiment of the present invention, and FIG.
Figures (a) and (b) are a plan view and a cross-sectional view of the intermediate fixing plate of the same as above.
FIGS. (A) and (b) are a plan view and a cross-sectional view of the same fixture, FIG. 4 is a front view showing a mounting state of another embodiment of the same, and FIG. 5 is a cross-section of still another embodiment of the same. Fig. 6 is a perspective view of the distribution board, Fig. 7 is a perspective view of the same door with the door opened, and Fig. 8 (a).
FIG. 9B is a plan view and a sectional view of the internal unit of the conventional example, and FIG. 9 is a sectional view of the same. 1 is a box, 2 is a bolt, 3 is a frame, 4 is a mounting plate, 5 is a breaker, 6 is an intermediate fixing plate, 7 is an insertion hole, 8 is a mounting piece, 9 is a fixing piece, and 10 is a fixing tool.

Claims (1)

[Scope of utility model registration request] 1. A box constituting an outer shell, a frame having a substantially U-shaped cross section, arranged parallel to each other with the opening side being the box side, and bolted to the box at both ends, and a bridge between both frames. An inner unit fixing device for a distribution board having a mounting plate screwed to a frame and a wiring device such as a breaker mounted to the mounting plate, and both lower ends of the frame fixed to the box through bolts. And a plurality of intermediate fixing plates each having a predetermined length in the longitudinal direction of the frame, and the frame is sandwiched between the intermediate fixing plates. An inner unit fixing device for a distribution board, comprising: a fixing device for fixing the frame to an intermediate fixing plate.