JP2008125332A - Box for storing electrical equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrical equipment storage box that can simplify assembling work, while improving rigidity in an assembled state. <P>SOLUTION: Plate member, such as each side plate 4 and a bottom plate 5 are formed into a box-like body having a bent part R whose peripheral edge is bent. A claw piece 10 is provided protrusively to one of the bent parts R, R adjacent to each other between the plate members in an assembled state, a slit 11 that allows the insertion of the claw piece 10 is formed in the other bent part, and by bending, the claw piece 10 is bent after being inserted into the slit 11, the plate members are linked with one another. Accordingly, in comparison with a conventional electrical-equipment storage box assembled by screw-fixing the plate members with each other, the electrical-equipment storage box can be assembled by easy assembling work reduced in the frequency of tool utilization and can carry out fast assembling work at the installation site of the box for storing electrical equipment. <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). With 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 it can be reduced.

JP 2003-318560 A

  However, since the storage box described in Patent Document 1 is an assembly of the back plate, the top plate, the bottom plate, and the side plates, all of which are assembled by screwing, it takes time for the assembly work, and the assembled storage box has sufficient rigidity. Is difficult to obtain, and it is necessary to form each plate thickly.

  Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a storage box that can simplify the assembly work and can improve the rigidity in the assembled state. is there.

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. An electric equipment storage box comprising a door member that opens and closes the front surface, wherein the plate member is formed in a box-like body having a bent portion with a peripheral edge bent, and in an assembled state. After projecting a claw piece on one of the bent portions adjacent to each other between the plate members, opening a slit through which the claw piece can be inserted in the other, and inserting the one claw piece into the other slit It is characterized in that the plate members can be connected to each other by being bent at.
The invention according to claim 2 is the invention according to claim 1, further comprising a reinforcing member that is attached across adjacent plate members and reinforces the connection between the plate members, and the reinforcing member or the plate member A protrusion is provided on one of the protrusions, and a fitting portion for fitting the protrusion on the other is provided, and the reinforcing member is bolted to the plate member in a fitting state of the protrusion to the fitting portion. And
The invention according to claim 3 is characterized in that, in the invention according to claim 2, the reinforcing member can be attached to the inner surface of the flange portion formed on the periphery of the opening provided in the front surface of the box body. .

According to the present invention, each plate member is formed in a box-like body having a bent portion with a peripheral edge bent, so that the rigidity of the electric device storage box in the assembled state can be improved. In addition, since the rigidity can be maintained even if each plate member is made thin, it is expected to have the effect of improving workability and cost reduction during transportation and storage work due to the thinning of each plate member. be able to. Further, the plate members are connected to each other by bending a claw piece protruding from the bent portion of one plate member through a slit provided in the bent portion of the other plate member. Therefore, compared to conventional storage boxes that are assembled by screwing together plate members, it can be assembled with easy assembly work that requires less frequent use of tools, and can be assembled quickly at the installation site of electrical equipment storage boxes. Work can be done. Furthermore, since the plate members are connected by inserting the claw pieces into the slits, positioning work such as matching the bolt holes is not necessary. Therefore, it is possible to realize an improvement in work efficiency associated with further ease of assembly work.
Further, according to the invention described in claim 2, since the reinforcing member is fixed across the two plate members after the plate members are connected to each other, the rigidity of the electric equipment storage box in the assembled state is further increased. In addition, it is possible to achieve a further reduction in thickness of each plate member accompanying the improvement in rigidity. Furthermore, a protrusion is provided on either one of the reinforcing member or the plate member, and a fitting portion is provided on the other so that the protrusion is fitted, and the reinforcing member is bolted to the plate member in a fitted state with the fitting portion of the protrusion. I have to. Therefore, the bolt fixing portion is automatically positioned by the fitting, facilitating the fixing work of the reinforcing member, improving the efficiency of the assembling work, and the fitting enables a minimum necessary bolt fixing. A sufficient reinforcing effect can be expected.
In addition, according to the invention described in claim 3, since the reinforcing member is attached to the inner surface of the flange portion formed on the periphery of the front opening, the installation work of the electrical equipment in the electrical equipment storage box, etc. It won't get in the way.

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 R formed on the front side edge portion of the side plate 4 is subjected to a bending process in which a plate-like member is bent into an L shape, and a flange is formed at the periphery of the front opening when the box body 1a is assembled. . Then, a substantially L-shaped reinforcing plate 8 is welded to the inner surface of the flange portion (bending portion) R (the surface that becomes the inside of the storage box 1 at the time of assembly) so as to protrude forward from the front opening. Further, bolt insertion holes 16 and 16 through which bolts can be inserted are formed in the upper part and the lower part of the flange part R across the flange part R and the reinforcing plate 8. In addition, a pair of projections 15, 15 projecting rearward are provided at the upper and lower positions of each bolt insertion hole 16 of the reinforcing plate 8.
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 is provided with a welded reinforcing plate 8 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 R formed on the front side edge of the bottom plate 5 is provided so as to form a flange on the front opening peripheral edge like the bent portion R formed on the front side edge of the side plate 4. A reinforcing plate 8 similar to the above is welded to the inner surface of the flange portion R formed in a letter shape so as to protrude forward from the front opening. In addition, bolt insertion holes 16 are formed in the left and right sides of the flange portion R over the reinforcing plate 8. In addition, the reinforcing plate 8 has a pair of protrusions 15 and 15 protruding 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. Further, a reinforcing plate is welded to a bent portion (flange portion) formed at the front edge, and a bolt insertion hole and a projection are formed like the reinforcing plate 8 of the bottom plate 5.

  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 the orthogonal direction. Each arm portion has a bolt hole 23 into which a bolt can be inserted, and the bolt hole 23. Are provided with round holes (fitting portions) 22 and 22 that fit into the protrusions 15 provided on the reinforcing plate 8. 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 and 19 with nuts are inserted into the bolt holes 23 and the bolt insertion holes 16 and tightened, and the reinforcing bracket 20 is tightened. 4 and the bottom plate 5 are fixed so as to straddle (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. In addition, since the reinforcing metal fitting 20 is attached to the inner surface of the flange portion R formed on the peripheral edge of the front opening, it does not interfere with the installation work of the electrical equipment in the storage box 1.
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 metal fitting is used.
Furthermore, if it is not necessary to weld the reinforcing plate, a projection or the like may be provided in the bent portion of each plate member, or a protrusion is provided in the reinforcing member and a fitting portion is provided on the plate member (including the reinforcing plate) side. However, the same effect as described above can be obtained. Furthermore, instead of welding the reinforcing plate to the front edge of the bottom plate or the side plate, the front edge of the bottom plate or the side plate can be bent by hemming. Furthermore, for example, when the reinforcing member has a sufficient thickness, the fitting portion may be a fitting recess (bottomed hole) instead of a round 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 plate, 10. Claw Pieces 11... Slits 15.

Claims (3)

A box body for electrical equipment storage comprising a box body closed on the other five surfaces except the front surface by assembling a plurality of plate members, and a door member assembled to the box body and opening and closing the front surface,
While forming the plate member into a box-like body having a bent portion whose peripheral portion is bent, and projecting a claw piece on one of the bent portions adjacent to each other between the plate members in an assembled state, On the other side, a slit is formed through which the nail piece can be inserted,
An electric equipment storage box characterized in that plate members can be connected to each other by bending the one claw piece after being inserted into the other slit. Attached across adjacent plate members, and provided with a reinforcing member that reinforces the connection between the plate members,
A protrusion is provided on one of the reinforcing member and the plate member, and a fitting portion for fitting the protrusion on the other is provided, and the reinforcing member is placed in the fitting state of the protrusion on the plate member. The box for electrical equipment storage according to claim 1, wherein the box is fixed to a bolt.   The box for storing electric equipment according to claim 2, wherein the reinforcing member can be attached to an inner surface of a flange portion formed at a peripheral edge of the opening provided on the front surface of the box body.

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