JP2569240Y2 - PCB frame mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a board frame to a distribution board, a control board, or the like.

[0002]

2. Description of the Related Art In a distribution board and the like, a substrate frame for mounting a large number of breakers is mounted on the bottom of a box. At the time of construction, the board frame is once separated from the box, and the box is placed at a predetermined position such as a wall, and then the board frame is attached to the original position. In this case, conventionally, a hole (or groove) formed in the substrate frame is inserted into a bolt protruding from the box, and is fixed with a nut.

[0003]

However, since the board frame is directly supported by the bolts, there is a problem that the threaded portions of the bolts are damaged. In addition, due to the weight of the inner unit such as the breaker, the inner lid fixed to the substrate frame may be displaced from the door frame attached to the box and may not be opened or closed.

[0004] Further, there is another problem that it is not easy to align the holes of the board frame with the bolts, and the workability is reduced. Accordingly, an object of the present invention is to provide a mounting structure for a board frame in which bolts are hardly damaged and workability is improved.

[0005]

According to a first aspect of the present invention, there is provided a mounting structure for a board frame, comprising: a bolt protruding forward from a lower portion of a bottom portion of a box; And a substantially L-shaped receiving member having a receiving piece protruding forward from the front end thereof, and a substrate frame whose lower part is supported by the receiving piece and fixed to the bolt.

According to a second aspect of the present invention, the height of the receiving piece of the receiving member is adjustable. According to a third aspect of the present invention, in the mounting structure of the substrate frame according to the first aspect, the receiving piece of the receiving tool is inclined forward and upward.

[0007]

According to the configuration of the present invention, when fixing the board frame to the bolt of the box, the board frame can be fixed to the bolt by sliding the board frame after being supported by the receiving piece of the receiving device. For this reason, since the load of the substrate frame is borne by the receiving device, the screw portion of the bolt is not damaged. Further, since the work of fixing to the bolt can be performed in a state where the substrate frame is temporarily placed on the receiving member, the workability is improved.

According to the configuration of claim 2, since the height of the receiving piece can be adjusted freely, it is possible to cope with a variation in the bolt mounting position of the board frame. According to the configuration of the third aspect, since the receiving piece is inclined forward and upward, the board frame can be easily slid backward, and the workability is further improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A mounting structure of a substrate frame according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 5 shows a distribution board, which includes a box 1, a board frame 3 mounted inside the box 1 and having a plurality of breakers 2,.
A door frame 5 which is attached to the opening edge of the box 1 and has a door 4 which can be freely opened and closed.

In the vicinity of the four corners at the bottom of the box 1, bolts 6 project forward. In this case, as shown in FIG. 3, the head 6a of the bolt 6 is fitted into the groove of the hat-shaped metal member 8 having both flanges fixed to the box 1, and the screw 6b is passed through a hole formed in the web. It protrudes forward. The bolt 6 is for fixing the board frame 3. As shown in FIG. 1, a substantially L-shaped receiving member 7 is fixed to the bolt 6 provided on the lower side. Specifically, the receiving tool 7 includes an L-shaped hardware 10, a receiving piece 11, and an adjusting bolt 12. The L-shaped metal piece 10 has a vertical piece 10a inserted into the bolt 6 and fixed with a nut 9, a hole provided in the horizontal piece 10b, and a welding nut 13 aligned with the hole fixed to the lower side. The adjusting bolt 12 is screwed into the welding nut 13 to fix the L-shaped metal 1.
The receiving piece 11 is pivotally attached to the upward end of the hole. As shown in FIGS. 1 and 2, the receiving piece 11 is substantially parallel to the horizontal piece 10 b of the L-shaped hardware 10, and its tip projects forward from the tip of the bolt 6. The height of the receiving piece 11 can be adjusted by adjusting the adjusting bolt 12. The receiving member 7 is not fixed to the bolt 6 disposed on the upper side.

As shown in FIG. 5, the substrate frame 3 has a pair of groove-shaped support bars 3a, 3a and a pair of support bars 3a, 3a.
a provided at intervals between the plates 3b. A hole 14 having a diameter larger than the outer diameter of the screw portion 6b of the bolt 6 is formed at the upper end and the lower end of the support rod 3a, and the hole 14 is inserted into the bolt 6 and fixed with a nut 15. In this case, both flanges of the support rod 3a are cut so as not to hit the vertical piece 10a of the L-shaped metal piece 10. As shown in FIG. 3, when viewed from below, the lower surface of the support bar 3a is covered with the receiving member 7 to prevent the covering of the electric wire routed inside the distribution board from being damaged by the edge of the board frame 3. it can. After the breakers 2 are mounted on the substrate frame 3, the inner lid 16 is rotatably mounted. The door frame 5 is designed so that the inner lid 16 can be fitted to the inner peripheral surface of the door frame 5 when the door frame 5 is attached to the box 1.

Next, a procedure for mounting the board frame 3 will be described. That is, since the units such as the board frame 3 mounted inside the box 1 are heavy, they are once removed at the loading destination, separated from the box 1, and the box 1 is placed at a predetermined position. At the position of. At this time, as shown in FIG. 4, first, the lower end of the support bar 3 a of the substrate frame 3 is temporarily placed on the receiving piece 11 of the receiving tool 7. The height of the receiving piece 11 is adjusted in advance with the adjusting bolt 12. Then, as shown in FIGS. 1 to 3, the board frame 3 is slid rearward while the board frame 3 is supported by the receiving member 7, the holes 14 are inserted through the bolts 6, and the nuts 15 are used for the board frame 3. Tighten the lower and upper ends of the.

In the first embodiment, since the board frame 3 can be temporarily placed on the receiving member 7, the work of fixing the board frame 3 to the bolt 6 becomes easy. Further, since the height of the receiving piece 11 of the receiving member 7 is freely adjustable, it is possible to cope with a variation in the positions of the holes provided in the substrate frame 3. 6 to 10 show a mounting structure of the board frame 3 according to the second embodiment of the present invention. In this case, the receiving member 7 is integrally formed in a substantially L shape, and the receiving piece 11 is inclined forward and upward. The support rod 3a of the substrate frame 3 is not a hole but a groove 17a.
Is provided. Other configurations are the same as those of the first embodiment.

Next, the procedure for mounting the board frame 3 of the second embodiment will be briefly described. As in the first embodiment, the substrate frame 3 is temporarily placed at the tip of the receiving piece 11 of the receiving tool 7 (FIGS. 9 and 10), and the board frame 3 is slid rearward according to the inclination of the receiving piece 11. The groove 17 is inserted into the bolt 6 and fastened with the nut 15 (FIGS. 6 to 8).

In the second embodiment, since the receiving piece 11 is inclined, the board frame 3 can be easily slid. For this reason, the work of fixing the board frame 3 to the bolt 6 is further facilitated.

[0016]

According to the mounting structure of the board frame of the present invention, when the board frame is fixed to the bolt of the box, the board frame is supported by the receiving piece of the receiving device, and then the board frame is slid. Can be fixed to For this reason, since the load of the substrate frame is borne by the receiving device, the screw portion of the bolt is not damaged. Also,
In this way, the work of fixing to the bolts can be performed in a state where the substrate frame is temporarily placed on the receiving device, so that workability is improved.

According to the second aspect, since the height of the receiving piece is adjustable, it is possible to cope with a variation in the bolt mounting position of the board frame. According to the third aspect, since the receiving piece is inclined forward and upward, the board frame can be easily slid backward, and the workability is further improved.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a first embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a side view before mounting the substrate frame.

FIG. 5 is a front view of the distribution board.

FIG. 6 is a side view of a main part of a second embodiment of the present invention.

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a bottom view of FIG. 6;

FIG. 9 is a side view before mounting the board frame.

FIG. 10 is a front view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box 3 Board frame 6 Bolt 7 Receiving tool 11 Receiving piece

Claims (3)

(57) [Scope of request for utility model registration] A substantially L-shaped bolt having a bolt protruding forward at a lower portion of a bottom portion of a box, and a receiving piece fixed to the bolt and located below the bolt and protruding forward from a tip of the bolt. And a board frame having a lower part supported by the receiving piece and fixed to the bolt. 2. The mounting structure for a substrate frame according to claim 1, wherein the height of the receiving piece of said receiving member is adjustable. 3. The mounting structure for a substrate frame according to claim 1, wherein the receiving piece of said receiving tool is inclined forward and upward.