JPH022007Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is based on the left and right side panels of a power distribution board that facilitate assembly, disassembly, and structural changes, and that maintains reasonable strength with a simple structure. It relates to the connection structure between the base plate and the bottom plate.

[Conventional technology]

Conventionally, the bonding structure for fixing the left and right side plates to the bottom plate of a switchboard is as shown in FIG.
Bent pieces 2 formed on the rear edge and left and right edges
Left and right side plates 3 and 4 are arranged on a, 2b and 2c, and their joints are welded to connect the bottom plate 1 and the left and right side plates 3 and 4.

On the other hand, the connection structure in which the bottom and both sides are frames is as shown in FIG. Welded to the joints of the forms 6a, 6b, 6c, 3
The L-shaped frames 6a, 6b, and 6c on the sides are fixed together.

In addition, as shown in FIG. 3, the three-sided L-shaped frame 6
LL metal fittings 7, which are integrally provided with three metal fittings with an L-shaped cross section at right angles in three directions, are riveted to the joining parts of a, 6b, and 6c, and the three-sided L-shaped frames 6a, 6b,
6c are fixed together.

[Problem that the invention attempts to solve]

However, these conventional joining structures use welding and rivets for fixing, which not only requires specialized tools, but also has the drawback of requiring specialized special skills for joining work, especially welding work. , Furthermore, after joining, the bottom plate 1,
Since the left and right side plates 3, 4, etc. cannot be removed, there is a drawback that structural changes are difficult.

[Means for solving problems]

This idea was developed with the above points in mind, and the front and rear bottom folds are formed at the same height by bending upwards at the front and rear edges, and the left and right edges, respectively. a bottom plate having left and right bottom bent pieces;
two bolt insertion holes transparently provided at the left and right positions of the left and right end portions of the front and rear bottom bent pieces, respectively;
Left and right side plates having front and rear bent pieces formed by inward bending at the front and rear edges, respectively, and a piece on the inner surface of the lower end of each of the front and rear bent pieces. An L-shaped plate-shaped joint that is fixed and the other piece is guided inward from below the lower end, and two bolt insertion holes that are transparently provided at the left and right positions of the other piece of each of the joints. , the lower surfaces of the left and right side plates and the front and rear bent pieces are in contact with the upper surfaces of the left and right bottom bent pieces and the front and rear bottom bent pieces, respectively, and the other pieces of each joint are abutting the inner surfaces of the front and rear bottom bent pieces;
A power distribution board comprising bolts and nuts that are inserted into the bolt insertion holes of the front and rear bottom bent pieces and the bolt insertion holes of the joint and tighten the front and rear bottom bent pieces and each of the joints. This is a joint structure between the left and right side plates and the bottom plate.

[Effect]

Therefore, according to this invention, the left and right side plates are fixed to the bottom plate with two sets of bolts and nuts through joints, so there is no need to use conventional welding or rivets, and there is no need for assembly gauges or special tools. can be made unnecessary. Furthermore, the width dimension of the switchboard can be easily determined and the switchboard can be manufactured within a predetermined dimensional error range. In addition, since the connection can be made only by tightening bolts and nuts, assembly, disassembly, and structural changes are easy.Furthermore, since two sets of bolts and nuts are used for one joint, the left
The right side plate can be prevented from collapsing, reasonable strength can be maintained, and the structure is extremely simple.

〔Example〕

Next, this idea will be described in the fourth section showing one example of it.
This will be explained in detail with reference to the drawings below.

In these drawings, 8 is a bottom plate, and 9a, 9b, and 9c are front and rear bottom bends formed at the same height by upward bending at the front, rear, left, and right edges of the bottom plate 8, respectively. front, left and right bottom folded pieces (rear bottom folded piece is not shown), 10 is front and rear bottom folded piece 9
There are two bolt insertion holes transparently provided at the left and right positions of the left and right end portions of a.

11 and 12 are left side plate and right side plate, 11
a, 12a are fronts formed by inward bending at the front and rear edges of the left and right side plates 11, 12, respectively;
This is a rear bent piece (the rear bent piece is not shown).

Reference numeral 13 designates four L-shaped plate-shaped joints, one piece of which is fixed by welding to the inner surface of the lower end of each of the front and rear bent pieces 11a and 12a, and the other piece is fixed to the inside from below the lower end. It has been derived in this direction. Reference numeral 14 designates two bolt insertion holes provided at the left and right positions of the other piece of the joint 13.

15 is a bolt, left and right side plates 11, 12
The lower surfaces of the front and rear bent pieces 11a and 12a are in contact with the left and right bottom bent pieces 9b and 9c, respectively, and the upper surfaces of the front and rear bottom bent pieces 9a, and the other pieces of each joint 13 are the front and rear bent pieces 11a and 12a, respectively. The bolt 15 is brought into contact with the inner surface of the rear bottom bent piece 9a, and is inserted into the bolt insertion hole 10 of the front and rear bottom bent piece 9a and the bolt insertion hole 14 of the joint 13.
A nut (not shown) provided on the inside of the front
The rear bottom bent piece 9a and each joint 13 are fastened, and the left and right side plates 11 and 12 are fixed to the bottom plate 8 via the joints 13.

It is also preferable that the upper end portions of the left and right side plates be connected using bolts and nuts to facilitate assembly, disassembly, and structural changes. It may be a structure that is vertically symmetrical to the structure of the present invention, or it may be a structure as shown in U.S. Pat.

Therefore, according to the embodiment, the left and right side plates 11 and 12 are fixed to the bottom plate 8 via the joint 13 with two sets of bolts 15 and nuts, respectively, so it is not necessary to use conventional welding and rivets. Without,
In addition to eliminating the need for assembly gauges and special tools,
The width dimension of the switchboard can be easily determined and manufactured within a predetermined dimensional error range. In addition, since the connection can be performed only by tightening bolts 15 and nuts, assembly, disassembly, and structural changes are easy.Furthermore, since two sets of bolts 15 and nuts are used for one joint 13, the left Right side plate 1
1 and 12 can be prevented from falling, reasonable strength can be maintained, and the structure is extremely simple.

[Effect of idea]

As described above, according to this invention, the left and right side plates are fixed to the bottom plate with two sets of bolts and nuts through joints, so there is no need to use conventional welding or rivets, and there is no need to use assembly gauges or dedicated Eliminates the need for tools. Moreover, the switchboard and width dimensions can be easily determined and manufactured within a predetermined dimensional error range. In addition, since the connection can be performed only by tightening bolts and nuts, assembly, disassembly, and structural changes are easy.Furthermore, since two sets of bolts and nuts are used for one joint,
The left and right side panels can be prevented from collapsing, reasonable strength can be maintained, and the structure is extremely simple.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a part of the coupling structure between the left and right side plates and the bottom plate of a conventional switchboard, and FIGS. 2 and 3 are perspective views of a part of the frame coupling structure of the conventional switchboard, respectively. Figure 4 and the following drawings show perspective views of essential parts of an embodiment of the connection structure between the left and right side plates and the bottom plate of the switchboard of this invention, Figure 4 before assembly and Figure 5 after assembly. After completion. 8...Bottom plate, 9a...Front bottom bent piece, 9b, 9c
... Left and right bottom bent pieces, 10 ... Bolt insertion hole, 1
1...Left side plate, 11a...Left side bent piece, 12...
...Right side plate, 12a...Right side bent piece, 13...Joint, 14...Bolt insertion hole, 15...Bolt.

Claims (1)

[Scope of utility model registration request] A bottom plate having front and rear bottom bent pieces and left and right bottom bent pieces formed at the same height by bending upward at the front and rear edges, and the left and right edges, respectively; Two bolt insertion holes are made transparent at the left and right positions of the left and right ends of the bottom bent piece, respectively, and the front and rear sides are formed by inward bending at the front and rear edges, respectively. Left and right side plates having bent pieces, and an L-shaped plate in which one piece is fixed to the inner surface of the lower end of each of the front and rear bent pieces, and the other piece is guided inward from below the lower end. a shaped joint, two bolt insertion holes made through the left and right sides of the other piece of each joint, and the lower surfaces of the left and right side plates and the front and rear bent pieces are respectively connected to the left side of the joint. , are in contact with the upper surfaces of the right bottom bent piece and the front and rear bottom bent pieces, the other pieces of each of the joints are in contact with the inner surfaces of the front and rear bottom bent pieces, and the front and rear bottom bent pieces are in contact with the upper surfaces of the right bottom bent piece and the front and rear bottom bent pieces. Left and right side plates and a bottom plate of a switchboard, comprising bolts and nuts that are inserted into the bolt insertion holes of the curved pieces and the bolt insertion holes of the joints and fasten the front and rear bottom bent pieces and each of the joints. The bonding structure between