JP2008148532A - Housing box for electrical equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a housing box for electrical equipment which displays full reinforcing effect without deteriorating waterproofness, and simplifies mounting work of a reinforcing fitting which in turn simplifies assembly work of the body of the housing box. <P>SOLUTION: Flange portions projecting inside an opening respectively are provided at a front end of a pair of plate members (for example, a side plate 4 and a bottom plate 5) by a folding, or the like, wherein the plate members are arranged adjacent and in a rectangular form in an assembled state, and form an angular portion that opens at the front face. A plurality of projections 15 that project backward are provided at the rear faces of the flange portions, then the reinforcing metal fitting 20, having a plurality of round holes into which the projections 15 are inserted, are mounted on the rear faces of the flange portions over the side plate 4 and the bottom plate 5, in such a state that the projections 15 are inserted into the round holes 22, respectively, and the body of the housing box is reinforced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electrical equipment storage box (hereinafter referred to as a storage box) for storing various electrical equipment such as distribution boards, switchboards, and control boards.

  Conventionally, as a storage box for storing various types of electrical equipment such as power distribution equipment and communication equipment, a frame is formed by welding angle frames, etc., and a closing plate is attached to each surrounding surface by welding or screwing. There is a frameless structure in which a metal plate is bent and a back plate and side plates are continuously formed, and a top plate and a bottom plate are attached to the metal plate by welding or the like.

However, both the frame-structured storage box and the frameless-structured storage box are shipped in a state of being assembled in a factory or the like, and storage and transportation are performed in the assembled state. Therefore, a large space is required for storage, the efficiency during transportation is poor, and there are problems that many storage boxes cannot be transported at one time.
Therefore, a storage box has been proposed in which a back plate, a top plate, a bottom plate, a side plate, and the like can be assembled at the installation site by screwing or the like (for example, Patent Document 1). Further, for example, an L-shaped reinforcing member is fixed with a bolt over the top plate and the side plate, the side plate and the bottom plate, and the connection between the plate members is reinforced. And in the storage box of this configuration, each plate can be stacked and stored until it is assembled at the installation site, so the storage space can be reduced and the efficiency during transportation can be improved. There is an advantage that the cost can be reduced.

JP 2003-318560 A

  However, since the storage box described in Patent Document 1 fixes the reinforcing member only with bolts, the number of bolt holes formed in each plate member tends to increase, and the waterproofness of the storage box decreases. Such a problem will occur. In addition, there is a problem in workability such that it is difficult to position the reinforcing member. On the other hand, if the number of bolts is reduced so as not to lower the waterproof property, the reinforcing effect is poor.

  Therefore, the present invention has been made in view of the above problems, and can exert a sufficient reinforcing effect without deteriorating waterproofness. Further, the mounting work of the reinforcing member, and the assembly work of the storage box body can be performed. It is intended to provide a storage box that can be simplified.

In order to achieve the above object, the invention according to claim 1 of the present invention is assembled to a box body in which the other five surfaces except the front face are closed by assembling a plurality of plate members, and the box body. And a pair of plate members that are adjacent to and orthogonal to each other in the assembled state and form corners of the opening. The front end of each plate member is provided with a flange portion protruding to the inside of the opening by bending, and a protrusion protruding rearward is provided on the back surface of the flange portion of each plate member, and has a fitting portion that can be fitted to the protrusion. The box body can be reinforced by attaching a reinforcing member to the rear surface of the flange portion over the pair of plate members in a state where the protrusion is fitted to each fitting portion.
The invention described in claim 2 is characterized in that, in the invention described in claim 1, the plate member is formed in a box-like body formed by bending the peripheral edge portion.

According to the present invention, since the pair of plate members arranged adjacent and orthogonal to each other in the assembled state can be reinforced by being connected by the reinforcing member, the rigidity of the box body in the assembled state can be increased. Even if the plate member is thinly formed, the rigidity can be maintained. In addition, it is possible to expect effects such as improvement in workability and cost reduction during transportation / storage work due to thinning of each plate member.
In addition, a protrusion is provided on the rear surface of the flange formed on the periphery of the opening, and a fitting portion that can be fitted to the protrusion is provided on the reinforcing member, and the reinforcing member is fitted to each fitting portion. In this state, the flange portion is attached to the rear surface over a pair of plate members. Therefore, a large number of bolt holes or the like are not opened in each plate member, and the waterproofness of the storage box does not deteriorate. Even if the reinforcing member is configured to be bolted, the number of bolt holes for fixing can be minimized, and the deterioration of the waterproofness of the storage box can be minimized. When it is desired to enhance the reinforcing effect, it can be dealt with by increasing the number of protrusions.
Furthermore, since the reinforcing member is automatically positioned at the mounting position simply by fitting the protrusion to the fitting portion, the efficiency of the assembly work can be improved, especially when the reinforcing member is bolted. Since the bolt insertion holes of the reinforcing member and the flange portion are automatically positioned, the improvement in workability becomes more remarkable. In addition, since the reinforcing member is attached to the rear surface of the flange portion, it does not interfere with the installation work of the electric device in the storage box.
According to the invention described in claim 2, since each plate member is formed in a box-like body formed by bending the peripheral edge portion, the rigidity of the box for storing electric equipment in the assembled state is further increased. In addition, it is possible to expect the effects of reducing the thickness of each plate member, improving workability at the time of carrying and storing work accompanying the reduction in thickness, and reducing costs.

Hereinafter, a storage box according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective explanatory view showing the appearance of the storage box 1, and FIG. 2 is a perspective explanatory view showing a state in which the front door 2 of the storage box 1 is removed. FIG. 3A is a perspective explanatory view showing the right side plate 4 and the bottom plate 5 from the rear, and FIG. 3B is an enlarged explanatory view of a portion A.

  The storage box 1 includes a box body 1a that is assembled in a box shape that closes the other five surfaces except the front surface by the top plate 3, the pair of side plates 4, 4, the bottom plate 5, and the back plate 6. A front door 2 that opens and closes the front opening of 1a is hinged. The front door 2 is attached so as to be freely openable about a hinge shaft 7 provided at the right end of the front surface of the box body 1a.

  The right side plate 4 is formed in a box-like body having bent portions R each of which is subjected to bending processing for reinforcement at the peripheral edge portion of the metal plate-like member. Further, plate-like claw pieces 10 and 10 projecting to the left (inside the storage box 1 during assembly) are integrally provided at the front and rear portions of the bent portion R formed at the lower edge. . Further, plate-like claw pieces 10 and 10 protruding leftward are also provided integrally with the upper and lower portions of the bent portion R formed at the rear edge of the side plate 4.

Further, the bent portion formed on the front side edge of the side plate 4 is formed by bending the plate-like member into an L shape, and providing a flange formed at the periphery of the front opening when the box body 1a is assembled. The reinforcing portion 8 is a flange portion R formed by projecting forward from the flange and then turning back. Bolt insertion holes 16 and 16 through which bolts can be inserted are formed in the upper and lower portions of the flange portion R. In addition, a pair of projections 15, 15 projecting backward are provided at the upper and lower positions of each bolt insertion hole 16 of the flange portion R.
In addition, although not shown in figure, the slit 11 which is mentioned later is formed in the bending part R formed in the upper edge of the side plate 4. FIG. The left side plate 4 is formed in a mirror-symmetrical shape with the right side plate 4, and the claw pieces 10, 10, etc., as well as the bent portions R, R,. It is provided in the same manner, and includes a flange portion R, a protrusion 15 and the like.

  On the other hand, the bottom plate 5 is also formed in a box-like body having bent portions R each of which is subjected to bending processing for reinforcement at the peripheral edge portion of the metal plate-like member, like the side plate 4. The bent portions R and R formed on the left and right edges of the bottom plate 5 are bent so that the front ends of the wall portions formed by bending the plate-like member upward are further bent outward to form flange portions. Is given. And it is a position corresponding to the claw pieces 10 and 10 provided on the side plate 4 at the front part and the rear part of the bent parts R and R, and the claw pieces 10 and 10 are provided at the base end part of the collar part. The slits 11 and 11 through which can be inserted are opened. Each slit 11 is formed to have substantially the same dimensions as the width and thickness of the claw piece 10, and can prevent the claw piece 10 in the inserted state from being loosely minimized. The bent portion R formed on the rear edge of the bottom plate 5 is formed in the same manner as the bent portions R and R on both the left and right edges, and the slits are also formed on the left and right sides of the bent portion R on the rear edge. 11 is provided.

  Further, the bent portion formed at the front edge of the bottom plate 5 is also in a state in which a flange portion R similar to the flange R formed at the front edge of the side plate 4 is provided by bending. In addition, bolt insertion holes 16 are formed in the left and right side portions of the flange portion R, respectively. In addition, the flange portion R has a pair of protrusions 15 and 15 projecting rearward so as to sandwich the bolt insertion holes 16.

  Furthermore, the top plate 3 is formed in substantially the same manner as the bottom plate 5 (details are not shown), and each of the peripheral portions of the metal plate-like member is bent for reinforcement. It is formed in the box-shaped body which has a part. And the nail | claw piece 10 which can be penetrated to the slit formed in the upper edge bending part R of each side plate 4 is provided in the bending part formed in the both right and left edges, and the bending part formed in the rear edge Is formed with a slit. The bent portion formed at the front edge is formed in the same shape as the flange portion R of the bottom plate 5, and a bolt insertion hole and a protrusion are formed in the flange portion R.

  In addition, the back plate 6 is also formed in a box-like body having a bent portion in which bending processing for reinforcement is performed on the peripheral portion of the metal plate-like member, like the side plate 4 and the bottom plate 5. (Details are not shown). The bent portions formed on both upper and lower edges of the back plate 6 are provided with claw pieces that can be inserted into the slits 11 and 11 formed in the bent portions R on the rear edges of the top plate 3 and the bottom plate 5. Yes. In addition, slits through which the claw pieces 10 and 10 formed in the bent portions R of the rear edges of the side plates 4 and 4 are opened are formed in the bent portions formed on the left and right edges of the back plate 6.

  As described above, the top plate 3, the side plates 4, 4, the bottom plate 5, and the back plate 6 are formed by bending the claw pieces 10 and 10 formed in the respective bent portions R of other adjacent plate members. It is assembled by being inserted into the slits 11 and 11 formed in the portion R. In order to increase the rigidity in the assembled state, L-shaped reinforcing metal fittings (reinforcing members) 20 are provided at the corners of the inner peripheral surface of the front opening of the box body 1a in the assembled state (that is, the inner surface of the flange portion R). It is attached. Hereinafter, the reinforcing metal fitting 20 will be described with reference to FIG. FIG. 4 is an explanatory view showing the reinforcing metal fitting 20.

  The reinforcing metal fitting 20 is a metal plate member formed in a substantially L shape having a pair of arm portions in an orthogonal direction. Each arm portion has a bolt hole 23 through which a bolt can be inserted, and the bolt hole 23. Is provided with round holes (fitting portions) 22 and 22 that fit into the protrusions 15 provided on the flange portion R. As will be described later, the reinforcing metal fitting 20 is applied to the inner surface of the flange portion R, and the flange portions R and R of two adjacent plate members (for example, the flange portion R of the side plate 4 and the flange portion R of the bottom plate 5). Are attached to connect the two.

Here, regarding the assembly work of the box body 1 using the top plate 3, the side plates 4, 4, the bottom plate 5, the back plate 6, and the reinforcing metal fitting 20, the assembly of the right side plate 4 and the bottom plate 5 is taken as an example in FIG. And 6 will be described. 5 and 6 are explanatory views showing the assembling work of the side plate 4 and the bottom plate 5.
In assembling the side plate 4 and the bottom plate 5, first, the claw pieces 10 and 10 provided on the lower edge of the side plate 4 are inserted into the slits 11 and 11 provided on the side edge of the bottom plate 5 (FIG. 5). (A)). Next, the claw pieces 10 and 10 in the inserted state are bent downward along the inner surface of the bent portion R of the bottom plate 5 in this state to connect the side plate 4 and the bottom plate 5 (FIG. 5B). Further, the flange portion (front edge bent portion) R of the side plate 4 and the flange portion (front edge bent portion) R of the bottom plate 5 are adjacent to the inner surface side of the corner portion, and the flange portions R, R of both plate members are connected to each other. The reinforcing metal fitting 20 is arranged so as to straddle. Then, with the projections 15, 15... Fitted into the round holes 22, 22..., The bolts 19, 19 are inserted and tightened into the bolt holes 23 and the bolt insertion holes 16, and the reinforcing bracket 20 is attached to the side plate 4. It fixes so that it may straddle the baseplate 5 (FIG. 6).
As described above, the side plate 4 and the bottom plate 5 are assembled. The top plate 3 and the like are assembled by the same operation (insertion of the claw piece 10 into the slit 11, connection of both plate members by bending of the claw piece 10, and fixation of the reinforcing metal fitting 20), thereby fixing the box body 1 a. Can be assembled. And if the front door 2 is hinged to the assembled box main body 1a, the storage box 1 will be completed. Note that the reinforcing metal fitting 20 is not used for the assembly of the back plate 6.

According to the storage box 1 having the above-described configuration, the top plate 3, the side plates 4, 4, the bottom plate 5, and the back plate 6 are connected by inserting the claw piece 10 into the slit 11 and bending the claw piece 10. can do. Therefore, compared with the conventional storage box assembled by screwing plate members, it can be assembled by an easy assembling work with less frequency of use of the tool, and can be quickly assembled at the installation site of the storage box 1. .
Further, the assembly by inserting the claw piece 10 into the slit 11 eliminates the need for positioning work such as matching bolt holes. Therefore, it is possible to realize an improvement in work efficiency associated with further ease of assembly work. Furthermore, since each slit 11 is formed so as to have substantially the same dimensions as the width and thickness of the claw piece 10, it is possible to prevent rattling of the claw piece 10 in the inserted state to a minimum. The storage box 1 without backlash can be provided.

Furthermore, since both plate members are fixed using the reinforcing metal fittings 20 after the plate members are connected to each other, the rigidity of the storage box 1 in the assembled state can be increased, and each plate member is formed thinly. In addition, since the rigidity can be maintained, it is possible to expect effects such as improvement in workability and cost reduction during transportation / storage work accompanying the thinning of each plate member. Further, the projections 15, 15... Are provided on each plate member side, and the round holes 22, 22... Are provided in the reinforcing bracket 20, and the projections 15 are fitted into the respective round holes 22. Therefore, the bolt hole 23 and the bolt insertion hole 16 are automatically positioned by the fitting, the fixing work of the reinforcing bracket 20 is facilitated, and the efficiency of the assembly work can be improved. Although only two places are bolted, a sufficient reinforcing effect can be expected. Further, since the bolt insertion holes 16, 16... Opened in the front opening periphery are few, the waterproofness of the storage box 1 is not lowered, and the reinforcing metal fitting 20 is formed on the inner surface of the flange portion R formed on the front opening periphery. Since it is attached, it does not obstruct the installation work of the electric equipment in the storage box 1 or the like.
In addition, the top plate 3, the side plates 4, 4, the bottom plate 5, and the back plate 6 are formed into a box-like body having bent portions R obtained by bending each of the peripheral portions of the metal plate-like members for reinforcement. Since it is formed, it is possible to improve the rigidity of the storage box 1 in one layer and to reduce the thickness of each plate member accompanying the improvement in rigidity.

  In addition, the structure which concerns on the storage box of this invention is not limited to the aspect as described in the said embodiment at all, The shape of each board member, the number of a slit or a nail | claw piece, an installation position, the shape of a bending part, etc. The structure which concerns on can be suitably changed as needed in the range which does not deviate from the meaning of this invention.

For example, it is possible to appropriately change whether each plate member is provided with a slit or a claw piece (for example, unlike the above embodiment, there is no problem if a claw piece is provided on the bottom plate and a slit is provided on the side plate). It is also possible to provide both a claw piece and a slit (for example, a claw piece is provided at the front portion of the bent portion of the lower edge of the side plate, and a slit is provided at the rear portion).
Even when the back plate is assembled, there is no problem even if a reinforcing member is used.
Furthermore, for example, when the reinforcing member has a sufficient thickness, the fitting portion may not be a round hole but a fitting recess (bottomed hole). In addition, it is possible to provide a highly versatile reinforcing member by providing a larger number of fitting portions on the reinforcing member and selecting a fitting portion to be used depending on the size or shape of the storage box.

It is a perspective explanatory view showing the appearance of a storage box. It is perspective explanatory drawing which showed the state which removed the front door of the storage box. (A) is the perspective explanatory drawing which showed the right side board and the baseplate from back, (b) is an enlarged explanatory view of the A section. It is explanatory drawing which showed the reinforcement metal fitting. It is explanatory drawing shown about the assembly operation | work of a side plate and a baseplate. It is explanatory drawing shown about the assembly operation | work of a side plate and a baseplate.

Explanation of symbols

  1 ・ ・ Storage box, 1a ・ ・ Box body, 2 ・ ・ Front door, 3 ・ ・ Top plate, 4 ・ ・ Side plate, 5 ・ ・ Bottom plate, 6 ・ ・ Back plate, 8 ・ ・ Reinforcement part, 10 ・ ・ Nail Pieces 11... Slits 15.

Claims (2)

A box for storing electrical equipment comprising a box body in which the other five surfaces except the front face are closed by assembling a plurality of plate members, and a door member that is assembled to the box body and opens and closes the opening formed in the front face. Body,
In the assembled state, the flange portions that are arranged adjacent to each other and perpendicular to each other and that form the corners of the opening are formed by bending at the front end portions of the pair of the plate members. Protrusions projecting rearward on the back of the flange part
The box body is reinforced by attaching a reinforcing member having a fitting portion that can be fitted to the protrusion to the back of the flange portion over the pair of plate members in a state where the protrusion is fitted to each fitting portion. A box for storing electrical equipment.   The box for electrical equipment storage according to claim 1, wherein the plate member is formed in a box-like body formed by bending a peripheral edge portion.

Images