JP5115962B2 - Distribution board - Google Patents

Description

  The present invention relates to a distribution board provided with temporary holding means for temporarily holding the front frame temporarily in the box when the front frame is attached to the box.

Conventionally, a distribution board having a configuration including a box and a front frame is usually attached by screwing the front frame to the box, as shown in Patent Document 1, for example.
When installing a distribution board with such a front frame on a wall or the like, first fix the box constituting the distribution board to the wall or the like to which the distribution board is attached with a predetermined mounting screw. A board to which circuit breakers and the like are assembled and attached is mounted and accommodated in the box, the circuit breaker is mounted on the board, various wirings are performed, and then the front frame is screwed and attached to the box.
JP 2005-86938 A

By the way, in a distribution board constructed by screwing the front frame into the box, the material constituting the distribution board is often metal, which increases the weight of each component and the construction of the distribution board. In many cases, a great deal of labor is required.

When attaching the front frame, the box is provided with a screw hole for screwing the front frame, and the front frame is provided with a hole for penetrating the body of the screw at a corresponding position. The position of the front frame is adjusted so that the positions of the screw holes are aligned with the holes, and after the alignment, the screws are tightened while holding the front frame by hand, and the front frame is attached. Do.

At this time, since the distribution board is usually installed in a standing state, the front frame is lowered by its own weight, so that the operation of performing the screw tightening while performing the above-mentioned alignment is often difficult. In particular, when the size of the distribution board is large, such as when the number of circuit breakers accommodated in the distribution board is large, not only the positioning described above is difficult, but also a screw stopper for screwing the front frame is used. When picking up a screw when it is damaged or dropped down, there is a danger that the front frame that has been supported in advance may fall over to the operator, and the distribution board construction work is inefficient. There was a problem that construction work was dangerous.

Therefore, the present invention can improve the workability of attaching the front frame to the box regardless of the size of the distribution board in the distribution board configured to screw the front frame to the box. An object of the present invention is to provide a distribution board that can be safely attached to a box.

According to the present invention, according to the present invention, a box having a circuit board assembled and mounted therein is accommodated inside and a front surface is opened, a front frame screwed to the front surface of the box, and a rotation to the front frame. In a distribution board with a freely pivoted door,
An engaged portion is formed on the box and an engaging portion is integrally formed on the front frame ,
When the front frame is screwed to the box, provisional holding means is provided for temporarily holding the front frame in the box so that the engaged portion and the engaging portion correspond to each other. Distribution board to do. Achieved by:

As a result, in a distribution board configured to screw the front frame onto the box, the front frame can be temporarily held by the box when the front frame is attached to the box. It is possible to provide a distribution board that can be improved regardless of the size of the distribution board and that can be safely attached to the box of the front frame.

Further, the temporary holding means is formed by an engaging portion that engages an engaged portion provided in the box and an engaging portion provided in the front frame with the weight of the front frame. You may comprise as.

As a result, when attaching the front frame to the box, the front frame can be temporarily held on the side of the box by first engaging the front frame and the box. It is possible to provide a distribution board that can be improved regardless of the size of the front panel and that can be safely attached to the box of the front frame.

In addition, the temporary holding means includes a fitting portion formed of an engaged portion provided in the box and an elastic member provided in the front frame to be fitted and engaged with the engaged portion; You may comprise as a characteristic that it was formed by the fitting part which consists of.

As a result, when the front frame is attached to the box, the front frame can be temporarily held on the box side by pushing the front frame into the box side and fitting it together. It is possible to provide a distribution board that can be improved regardless of the size of the front panel and that can be safely attached to the box of the front frame.

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According to the distribution board of the present invention, when attaching the front frame to the box, there is no difficulty in aligning the front frame and there is no risk of the front frame falling over to the operator. It is possible to provide a distribution board that can improve the mounting workability regardless of the size of the distribution board and can safely perform the installation work of the front frame to the box.

Hereinafter, an embodiment of a distribution board according to the present invention will be described in detail with reference to FIGS.

FIG. 1 is a view showing an appearance of a distribution board 100 of the present invention. The external appearance of the distribution board 100 is pivotally supported on the front frame 104 by a box 103, a front frame 101 screwed to the front surface of the box 103, and a shaft portion 104 provided on the front frame 101. Door 102.

The box 103 covers the upper, lower, left and right side surfaces and the rear surface of the distribution board 100. The box 103 accommodates a substrate on which circuit breakers are assembled and mounted, and the front surface is open.

The front frame 101 covers the periphery of the opening on the front surface of the box 103 and is screwed to the box using a screw.

The door 102 is pivotally supported by a shaft portion 104 provided on the front frame 101, and is opened when operating an internal circuit breaker, and covers the opening in a normal use state. An operation handle 1021 is provided on the front surface so that the closing operation can be performed.

FIG. 2 is a view of the state in which the door 102 of the distribution board 100 is removed as seen from the front side.

1061 is a main switch as a circuit breaker housed in the box 103, 1062 is a branch switch that distributes power from the main switch and supplies power to each load circuit, and 1063 is an installation of the distribution board 100 It is a mounting space for the current limiter provided when necessary depending on the place.

Reference numeral 105 denotes a protective plate, which is a cover provided so that a handle opening / closing operation of the circuit breaker can be performed safely without touching an internal charging unit from the outside with the door 102 opened.

Reference numeral 1015 denotes a screw for screwing the front frame 101 to the box 103. At the screwing position of the screw, a hole is provided on the front frame 101 side so that the body portion of the screw 1015 penetrates, and a screw hole for screwing the screw on the box 103 side. Is provided.

Next, FIGS. 3 to 14 show a portion of the temporary holding structure provided in the distribution board 100. Each will be described in detail.

FIG. 3 shows a first embodiment of the present invention. FIG. 3 shows a cross-sectional view in the vicinity of the top surface portion of the distribution board 100 when the front frame 101 is temporarily held in the box 103. In FIG. It is a substantially J-shaped engagement part formed by bending. The engaging portion 1031 and a part of the front frame 101 are engaged with each other to form a temporary holding structure.

FIG. 4 shows a second embodiment of the present invention. FIG. 4 shows a cross-sectional view in the vicinity of the top surface portion of the distribution board 100 when the front frame 101 is temporarily held in the box 103, and 1032 in the figure is at the end of the casing of the box 103. It is a substantially J-shaped engagement portion attached. The engaging portion 1032 and a part of the front frame 101 are engaged with each other to form a temporary holding structure.

In this embodiment, the substantially J-shaped hooking portion 1032 is welded and attached to the end portion of the box.

In these cases, when the front frame 101 is attached to the box 103 during the installation work of the distribution board 100, the front frame 101 and the box 103 are first engaged with each other, so that the front frame 101 is placed on the box 103 side. Can be temporarily maintained, so that the installation workability can be improved regardless of the size of the distribution board. Further, even if the front frame 101 and the box 103 are engaged with each other and the hands are released, the front frame 101 is held by engaging with the box 103, so that the front frame falls down. The installation work can be performed in a state in which the safety of the work is ensured without the danger of being applied.

FIG. 5 shows a third embodiment of the present invention. FIG. 5 shows a cross-sectional view in the vicinity of the top surface of the distribution board 100 when the front frame 101 is temporarily held in the box 103, and a substantially L-shaped insertion provided on the front frame 101. Temporary holding is performed by inserting the piece 1011 into a hole 1033 provided in the box 103.

As shown in FIG. 6, the insertion piece 1011 is provided with a tip portion 1012 that is obliquely tapered to facilitate the insertion operation, and a projection portion 1022 for engaging with the box 103 side. ing. Further, as shown in FIG. 7, a hole portion 1033 is provided in the front portion of the box 103 so that the insertion piece 1011 can be inserted. The hole 1033 is provided slightly above the center with respect to the top-to-bottom direction of the box.

When installing the front panel 101 to the box 103 in installing the distribution board 100, first, the front frame 101 is attached to the box 103, and the insertion piece 1011 provided on the front frame 103 is attached to the box 103. It is inserted into a hole 1033 provided in 103.

At this time, since the tip end portion 1012 of the insertion piece 1011 is obliquely tapered, by pressing the front frame 101 in the direction of the box 103, the hole portion 1033 provided in the box 103, Even if the vertical positional relationship of the insertion piece 1011 is slightly deviated, the tip portion 1012 of the tip portion 1012 is guided to the lower end of the hole portion 1033 and the tip portion 1012 is obliquely tapered. After overcoming the lower end of the hole portion 1033 of the box 103, the front frame 101 falls in the lower surface direction by the size of the protrusion portion 1012 due to the protruding portion 1012 formed in steps, and is engaged with each other.

Thereby, when inserting the insertion piece 1011 provided in the front frame 101 into the hole portion 1033 of the box 103, a strict alignment operation is not required, and the front frame 101 can be more easily attached to the box 103. It can be performed.

Therefore, when installing the distribution board 100, the insertion piece 1011 provided in the front frame 101 is inserted into the hole 1033 of the box 103, and the front frame 101 and the box 103 are first engaged with each other. Since the front frame 101 can be temporarily held on the side of the box 103, the mounting workability can be improved regardless of the size of the distribution board. Even when the front frame 101 and the box 103 are engaged with each other and the hand is released, the front frame 101 has a protruding portion of the insertion piece 1011 at the lower end of the hole portion 1033 of the box 103. Since 1012 is held in contact with each other, there is no danger of the front frame falling over, and the installation work can be performed while ensuring work safety.

FIG. 8 shows a fourth embodiment of the present invention. FIG. 8 shows a cross-sectional view in the vicinity of the side surface portion of the distribution board 100 when the front frame 101 is temporarily held in the box 103, and an elastic member 1034 (chain spring) provided in the box 103 is shown. Temporary holding is performed by loosely fitting the box 103 and the front frame 101 to each other via the.

One end of the elastic member 1034 is attached to the box 103 by welding, and the other end is contacted with the abutting portion 10341 that is bent when the front frame 101 is applied to the box 103 side, and the front frame When 101 is applied to the box 103 side, an invitation portion 10342 for guiding to a predetermined position without providing precise alignment is provided.

In the present embodiment, the elastic member 1034 is provided at two positions in the vertical direction on each of the left and right side portions of the distribution board 100.

Therefore, when the distribution board 100 is installed, when the front frame 101 is applied to the box 103 at approximately the position of the box 103 and pushed into the box 103, the elastic member 1034 bends, so that the front surface can be bent with an appropriate repulsive force. The frame 101 is held in a loosely fitted state. Thereby, the front frame 101 can be temporarily held on the box 103 side, and the mounting workability can be improved regardless of the size of the distribution board. Even if the front frame 101 and the box 103 are loosely fitted to each other and the hand is released, the front frame 101 is held by the box 103, so that the front frame is about to fall down. The installation work can be performed in a state where work safety is ensured.

FIG. 9 shows a fifth embodiment of the present invention. FIG. 9 shows a cross-sectional view in the vicinity of the side surface of the distribution board 100 when the front frame 101 is temporarily held in the box 103, and an elastic member 1035 (chain spring) provided on the front frame 101 is shown. ), The box 103 and the front frame 101 are loosely fitted to each other for temporary holding.

One end of the elastic member 1035 is attached to the front frame 101 by welding, and the other end is bent when the front frame 101 is applied to the box 103 side. When the frame 101 is applied to the box 103 side, an invitation portion 10352 for guiding to a predetermined position without providing exact alignment is provided.

Therefore, when the distribution board 100 is installed, when the front frame 101 is applied to the box 103 at approximately the position of the box 103 and pushed into the box 103, the elastic member 1034 bends, so that the front surface can be bent with an appropriate repulsive force. The frame 101 is held in a loosely fitted state. Thereby, the front frame 101 can be temporarily held on the box 103 side, and the mounting workability can be improved regardless of the size of the distribution board. Even if the front frame 101 and the box 103 are loosely fitted to each other and the hand is released, the front frame 101 is held by the box 103, so that the front frame is about to fall down. The installation work can be performed in a state where work safety is ensured.

In this embodiment, the elastic member 1035 is provided in two places on the left and right side portions of the distribution board 100 in the vertical direction.

FIG. 10 shows a sixth embodiment of the present invention. FIG. 10 shows a cross-sectional view in the vicinity of the top surface portion of the distribution board 100 when the front frame 101 is temporarily held in the box 103, and an elastic member 1036 (projecting portion) provided on the front frame 101 is shown. Temporary holding is performed by loosely fitting the fitting portion 10362 provided in the box 103 and the front frame 101 to each other through the box. The projecting portion is made of metal, and FIG. 11 shows an example in which the projecting portion is integrally formed of a resin material.

As shown in the drawing, the elastic member 1036 has an inflating portion 10361 having one end attached to the front frame 101 and a bulge in the substantially central portion in the direction of the other end.

A portion of the box 103 corresponding to the elastic member 1036 is provided with a fitting portion 10362 having a hole formed so as to penetrate the elastic member 1036 in a loosely fitted state. In this embodiment, the hole is provided in the vicinity of the screw hole into which the screw is screwed.

Therefore, when the distribution board 100 is installed, when the front frame 101 is applied and pushed into the hole portion of the box 103, the expansion portion 10361 of the elastic member 1036 is bent, so that the hole portion provided in the box 101 is bent. The front frame 101 is held in a loosely fitted state. Thereby, the front frame 101 can be temporarily held on the box 103 side, and the mounting workability can be improved regardless of the size of the distribution board. Even if the front frame 101 and the box 103 are loosely fitted to each other and the hand is released, the front frame 101 is held by the box 103, so that the front frame is about to fall down. The installation work can be performed in a state where work safety is ensured.

In this embodiment, two elastic members 1036 are provided on the left and right sides of the top surface of the distribution board 100.

12, 13 and 14 show a seventh embodiment of the present invention. 12 is an external view when the front frame 101 is temporarily held in the box 103. FIG. 13 is a view of the vicinity of the top surface of the distribution board 100 when the front frame 101 is temporarily held in the box 103. FIG. The box 103 and the front frame are engaged with each other by engaging a first hole 10371 provided in the front frame 101 with a screw 1015 for screwing the front frame 101 to the box 103. 101 is temporarily held.

The temporary holding means includes a screw 1015 for screwing the front frame 101 to the box 103, and a body of the screw 1015 provided on the front frame 101 in the vicinity of a screwing position (screw setting portion 1016) of the screw 1015. A first hole 10371 that can penetrate the first hole 10371, and a second hole that allows the screw head of the screw 1015 provided integrally with the first hole 10371 to be eccentric. Part 10372, and is temporarily held by engaging the screw 1015 and the first hole 10371 (FIG. 14).

Therefore, before installing the distribution board 100, the front frame 101 is applied to the box 103 with the screw 1015 loosely screwed into the screw installation portion 1016 in advance, and the screw head is attached to the second hole portion 10372. The first hole 10371 is hooked with the body portion of the screw 1015, and the box 103 and the front frame 101 are held in a hooked state. Thereby, the front frame 101 can be temporarily held on the box 103 side, and the mounting workability can be improved regardless of the size of the distribution board. Further, even if the front frame 101 and the box 103 are engaged with each other and the hand is released, the front frame 101 is held by the box 103, so that the front frame is about to fall down. There is no danger and the installation work can be performed while ensuring work safety.

It should be noted that the present invention is not limited to the embodiment, and can be freely improved and changed as needed without departing from the gist of the invention. For example, the engagement portion and the elastic member The position may be appropriately designed on the top surface side or the side surface side of the box, and the number of engaging portions and elastic members may be appropriately determined.

Further, after the screw is attached, a cover (hole concealment, cosmetic cap) having a diameter larger than that of the screw head so as to hide the first hole portion 10371 and the second hole portion 10372 in the screw head of the screw 1015. May be attached. As a result, the first hole 10371 and the second hole 10372 are not exposed and have excellent design characteristics. In addition, when a hand or the like comes into contact with the screw head or the like, the risk of injury at the end of the screw can be reduced, and a distribution board with good workability that can be considered in terms of safety can be provided.

In addition, since the cover is provided with a magnet so that the cover can be attracted to the screw by covering the screw head, the cover can be easily attached and a distribution board with good workability is provided. can do.

As described above, according to the distribution board of the present invention, when attaching the front frame to the box, there is no difficulty in aligning the front frame and there is no risk of the front frame falling over to the operator. It is possible to provide a distribution board that can improve the workability of attaching the front frame to the box regardless of the size of the distribution board and can safely perform the work of attaching the front frame to the box.

It is a figure which shows the external appearance of the electricity distribution panel. It is the figure which faced the state which removed the door 102 of the electricity distribution panel 100 from the front side. 6 is a cross-sectional view of the distribution board 100 near the top surface when the front frame 101 is temporarily held in the box 103. FIG. 6 is a cross-sectional view of the distribution board 100 near the top surface when the front frame 101 is temporarily held in the box 103. FIG. 6 is a cross-sectional view of the distribution board 100 near the top surface when the front frame 101 is temporarily held in the box 103. FIG. It is the figure which showed the insertion piece 1011 vicinity. FIG. 10 is a view showing a hole 1033 provided in the front part of the box 103. FIG. 6 is a cross-sectional view in the vicinity of a side surface of the distribution board 100 when the front frame 101 is temporarily held in the box 103. FIG. 6 is a cross-sectional view in the vicinity of a side surface of the distribution board 100 when the front frame 101 is temporarily held in the box 103. 6 is a cross-sectional view of the distribution board 100 near the top surface when the front frame 101 is temporarily held in the box 103. FIG. It is the figure which showed the other example as the expansion part 10361. FIG. 6 is an external view when a front frame 101 is temporarily held in a box 103. FIG. 6 is a cross-sectional view of the distribution board 100 near the top surface when the front frame 101 is temporarily held in the box 103. FIG. It is the external view which showed the 1st hole part in a front frame, and the 2nd hole vicinity.

100 Distribution board 101 Front frame 102 Door 103 Box 104 Shaft 105 Protection plate 1061 Main switch 1062 Branch switch 1063 Current limiter 1031 Engagement part 1032 Engagement part 1033 Hole part 1011 Insertion piece 1012 Tip part 10121 Protrusion part 1034 Elasticity Member 10341 Abutting part 10342 Inviting part 1035 Elastic member 10351 Abutting part 10352 Inviting part 1036 Elastic member 10361 Inflating part 10371 First hole 10372 Second hole 1015 Screw 1016 Screw installation part

Claims (3)

A box having a circuit board in which the circuit breakers are assembled and accommodated therein and having a front surface opened, a front frame screwed to the front surface of the box, and a door pivotally supported on the front frame. In the distribution board provided,
An engaged portion is formed on the box and an engaging portion is integrally formed on the front frame ,
When the front frame is screwed to the box, provisional holding means is provided for temporarily holding the front frame in the box so that the engaged portion and the engaging portion correspond to each other. Distribution board to do. The temporary holding means is formed by an engaging portion that engages an engaged portion provided in the box and an engaging portion provided in the front frame with the weight of the front frame. The distribution board according to claim 1. The temporary holding means is formed by a fitting portion including an engaged portion provided in the box and a fitting portion made of an elastic member provided in the front frame to be fitted and engaged with the engaged portion. The distribution board according to claim 1, wherein:

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