JP6503232B2 - Electrical equipment storage box - Google Patents

Description

  The present invention relates to a box for storing an electric device such as a cabinet used as a distribution board, for example.

  Conventionally, for example, as a box for storing electric equipment used in a distribution board or the like, a horizontal rail extending in the left and right direction is disposed at the upper edge or the lower edge of the inner surface of the back plate, A plurality of vertical rails are disposed to be connected, and various electric devices are configured to be fixed to fixing brackets installed between the vertical rails (for example, Patent Document 1). In addition, a so-called covering is erected on this vertical rail, and a wiring covering cover for covering the wiring of the electric device is attached to the tip of the covering so as to be able to open in one direction around the vertical direction. is there. In addition, in order to improve the strength of the vertical rail, the vertical rail is formed in a substantially U-shape which is bent rearward on both the left and right sides and opened rearward in top view.

JP, 2010-63254, A

  In recent years, with the increase in size of the electric device housing box, a large cover may be attached as a wiring cover. In addition, there are more cases in which larger and heavier electric devices are stored. However, in the case of the conventional electric device housing box, the contact surface between the vertical rail and the horizontal rail may be narrow, and the vertical rail (especially the connection portion with the horizontal rail) is deformed by the weight of the wiring cover cover or the electric device. As a result, problems such as interference between the wiring cover cover and the electric device occur.

  Therefore, the present invention has been made in view of the above problems, and provides an electric apparatus housing box in which the vertical rails are not easily deformed even if a heavy wiring cover or electric apparatus is attached. It is said that.

In order to achieve the above object, according to the invention as claimed in claim 1 of the present invention, a lateral rail extending in the lateral direction is disposed on the back plate of the box body, and both lateral sides are provided on the front of the lateral rail. The electrical equipment storage box which connected the vertical rail which was bent to the back side, the reinforcement bracket is inserted between the left and right side surfaces of the vertical rail, the front and the left and right side surfaces of the reinforcement bracket are the The reinforcing metal fitting is fixed to the vertical rail in a state of being in contact with the front surface and both left and right side surfaces from the inner surface side, and the horizontal rail and the vertical rail are connected via the reinforcing metal bracket. .
The invention according to claim 2 is characterized in that in the invention according to claim 1, the left and right sides of the vertical rail are provided with notched portions cut out from the rear end side, while the left and right sides of the reinforcing metal fitting The surface is provided with an abutting portion with which the rear end surface of the notch portion abuts.

According to the present invention, the reinforcing metal fitting is inserted between the left and right side surfaces of the vertical rail whose left and right side parts are bent backward, and the front surface and the left and right side surfaces of the reinforcing metal fitting are the inner surfaces of the front and left and right side surfaces of the vertical rail. In a state of being in contact from the side, the reinforcing metal fitting is fixed to the vertical rail, and the horizontal rail and the vertical rail are connected via the reinforcing metal fitting. Therefore, the strength of the connection portion between the horizontal rail and the vertical rail can be improved, and the vertical rail is not deformed even if the heavy wire cover or the electric device is attached to the vertical rail, There is no problem such as interference between the wiring cover and the electric device.
Moreover, while providing notches cut out from the rear end on the left and right sides of the vertical rail, contact parts to which the rear end faces of the notches abut are provided on the left and right sides of the reinforcing bracket The strength of the vertical rail can be further improved along with the fixing of the reinforcing fitting, and the deformation of the vertical rail can be further reliably prevented.

It is an explanatory view showing a box for electrical equipment storage from the front side. It is explanatory drawing which showed the vertical rail arrange | positioned so that horizontal rails may be connected. It is explanatory drawing which showed the disassembled state of the connection structure of the vertical rail and the horizontal rail in the upper end part of a vertical rail. It is explanatory drawing which showed the decomposition | disassembly state of the connection structure of the vertical rail and the horizontal rail in the center part of a vertical rail. It is explanatory drawing which showed the decomposition | disassembly state of the connection structure of the vertical rail and horizontal rail in the lower end part of a vertical rail. It is explanatory drawing which showed the state which attached the electric equipment and the covering to the vertical rail. It is explanatory drawing which showed the cross section of the connection location of the upper part of the vertical rail and the horizontal rail in the state of FIG. It is explanatory drawing which expanded and showed the area | region A in FIG.

  Hereinafter, an electric device housing box according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory view showing an electric device housing box 1 (hereinafter simply referred to as a box 1) from the front side. 2 is an explanatory view showing the vertical rails 5 disposed to connect the horizontal rails 4, 4... FIG. 3 is an explanatory view showing an exploded state of the connection structure between the vertical rail 5 and the horizontal rail 4 at the upper end portion of the vertical rail 5. As shown in FIG. FIG. 4 is an explanatory view showing an exploded state of the connection structure between the vertical rail 5 and the horizontal rail 4 at the central portion of the vertical rail 5. FIG. 5 is an explanatory view showing an exploded state of the connection structure between the vertical rail 5 and the horizontal rail 4 at the lower end portion of the vertical rail 5. FIG. 6 is an explanatory view showing a state in which the electric devices 30, 30 and the coverings 31, 31 are attached to the vertical rails 5, 5. FIG. 7 is an explanatory view showing a cross section of the connection portion between the upper portion of the vertical rail 5 and the horizontal rail 4 in the state of FIG. FIG. 8 is an explanatory view showing a region A in FIG. 7 in an enlarged manner.

  The box body 1 has a top plate, left and right side plates, a bottom plate, and a back plate 2a (shown in FIG. 6), and is mounted in a double door to open and close the box body 2 and the opening of the box body 2. A pair of front doors 3 and 3 are provided. Also, on the inner surface side of the back plate 2a, the horizontal rails 4, 4 ··· are disposed in the left-right direction as in the prior art, and the vertical rails 5, 5 are connected so as to connect the horizontal rails 4, 4 ··· · · Are arranged vertically. And, as shown in FIG. 6, in the box 1, fixing brackets 6, 6... Are provided so as to straddle between adjacent vertical rails 5, 5, and in front of the fixing brackets 6, 6. By fixing the various electric devices 30, 30, the electric devices 30, 30 can be stored. Also, at the upper end and the lower end of the vertical rail 5 adjacent to the outer side (outside of the box 1) of the vertical rail 5 on which the fixing brackets 6, 6. A wiring covering cover (not shown) can be attached to the tip end portions of the coverings 31 and 31 so as to be able to open in one piece with the vertical direction as an axis.

Here, the connection structure of the horizontal rail 4 and the vertical rail 5 which is an essential part of the present invention will be described.
The horizontal rail 4 is a metal member which is thin in the upper and lower parts and bent in a substantially U-shape in a side view and bent in the upper and lower portions in a rear view and is long in the horizontal direction. A plurality of rail connection portions 7 formed in a notch shape to hold the bolt heads 33a of the connection bolts 33 are provided along the longitudinal direction including the left and right end portions.

  On the other hand, the vertical rail 5 is a metal member which is thin in the left and right direction and is long in the vertical direction, with the left and right portions being bent rearward to be substantially U-shaped in top view. And in the upper end portion of the vertical rail 5, an insertion groove 11 formed by cutting the front surface downward in a U shape from the upper end edge, and left and right side surfaces are respectively cut out in an L shape from the upper end edge. An upper rail connecting portion is provided having a notch step portion 12 and a mounting hole 13 which is drilled below the notch step portion 12 in each side surface and through which the mounting screw 32 can be inserted. Further, at the central portion in the longitudinal direction of the vertical rail 5, the notch stepped portion 14 formed by notching the right side surface in a step-like manner and the notch stepped portion 14 at the right side surface are drilled at both upper and lower sides. Rail middle connection portion having mounting holes 15 and 15 through which insertion 32 can be inserted, and mounting holes 15 and 15 on the left side facing the mounting holes 15 and 15 and mounting holes (not shown) through which the mounting building 32 can be inserted Is provided. Furthermore, at the lower end portion of the vertical rail 5, an insertion groove 16 in which the front surface is cut in an inverted U shape upward from the lower end edge and the left and right side surfaces are cut out in an inverted L shape upward from the lower end edge. A rail lower connecting portion having a notched step portion 17 and an attachment hole 18 which is pierced above the insertion groove 16 on the front surface and above the notched step portion 17 on each side surface and in which the attachment screw 32 can be inserted. It is provided.

Furthermore, the horizontal rail 4 and the vertical rail 5 are connected to each other via corresponding reinforcing fittings 40, 50, 60 at each rail connecting portion.
Therefore, to describe each of the reinforcement fittings 40, 50, 60 in order, first, the upper reinforcement fitting 40 is interposed between the rail upper connection portion of the vertical rail 5 and the connection portion of the horizontal rail 4, and It is formed in a columnar shape that is long in the direction, and by fitting between the left and right sides of the vertical rail 5 from the rear of the vertical rail 5, the left and right sides of the upper reinforcement fitting 40 are reinforced on the left and right sides of the vertical rail 5, The front surface of the metal fitting 40 can be in contact with the front surface of the vertical rail 5 from the inner surface side. Further, reinforcing step portions 41 projecting to the left and right outsides are respectively provided on upper portions of the left and right side surfaces of the upper reinforcing metal fitting 40, and the front and lower surfaces of the reinforcing step portions 41 are in contact with the end surfaces of the notched step portions 12. It is possible to connect. Furthermore, the upper front side of the upper reinforcement fitting 40 is provided with a U-shaped groove 42 which is notched downward in a U-shape, while the upper rear side has a lateral width and an upper-lower width than the U-shaped groove 42. The first nut 34 for fastening the connection bolt 33 to the lateral rail 4 is provided on the bottom surface of the recess 43 and the circumferential surface is the recess 43. It is possible to insert it without contacting the inner surface of the In addition, screw holes 44 for screwing the mounting screws 32 are respectively provided below the reinforcing stepped portions 41 on the left and right side surfaces of the upper reinforcing metal fitting 40. In the rear surface of the upper reinforcing metal fitting 40, portions on the left and right sides of the recess 43 are thicker than the rear end surface of the vertical rail 5 on the left and right.

  The middle reinforcement fitting 50 is interposed between the rail middle connection portion of the vertical rail 5 and the connection portion of the horizontal rail 4 and is formed in a vertically elongated columnar main body 51, and the right side from the main body 51 Of the main body 51 from the rear of the vertical rail 5 so that the bolt fixing portion 52 protrudes to the right of the vertical rail 5 via the notch step 14. By fitting between the left and right sides of the rail 5, the left and right sides of the main body 51 can contact the left and right sides of the vertical rail 5, and the front of the main body 51 can contact the front of the vertical rail 5 from the inner side. There is. Further, at the boundary between the main body 51 and the bolt fixing portion 52, a fitting groove 53 into which a part of the notch step portion 14 can be inserted is provided, and the upper surface, front surface and lower surface at the boundary portion of the bolt fixing portion 52 The inner surface of the insertion groove 53 can be in contact with the end surface of the notch 14. Furthermore, an insertion hole 54 through which the connection bolt 33 can be inserted is provided on the front surface of the bolt fixing portion 52, while an insertion hole 54 is provided at the rear side of the insertion hole 54 on the rear surface of the bolt fixing portion 52. A recess (not shown) having more horizontal width and upper and lower width is provided in communication with the insertion hole 54, and the first nut 34 is formed on the bottom surface of the recess with its peripheral surface being the inner peripheral surface of the recess. It is possible to place it in a state where it does not touch each In addition, screw holes 55 for screwing the mounting screws 32 are respectively provided at upper and lower portions of the left and right side surfaces of the main body 51. In the rear surface of the middle reinforcing bracket 50, the left and right sides of the recess are thicker than the rear end surface of the vertical rail 5 at the left and right.

  The lower reinforcement fitting 60 is interposed between the lower rail connection portion of the vertical rail 5 and the connection portion of the horizontal rail 4 and is formed in a vertically long columnar shape like the upper reinforcement bracket 40 is inverted. The left and right side surfaces of the lower reinforcing metal fitting 60 are on the left and right side surfaces of the vertical rail 5, and the front surface of the lower reinforcing metal piece 60 is vertical Each of the front surfaces of the rails 5 can be in contact with the front surface thereof. Further, reinforcing step portions 61 projecting to the left and right outsides are respectively provided at lower portions of left and right side surfaces of the lower reinforcing metal fitting 60, and the front surface and the upper surface of the reinforcing step portion 61 It is possible to connect. Furthermore, an insertion hole 62 through which the connection bolt 33 can be inserted is bored in the lower front side of the lower reinforcement fitting 60, while an insertion hole is inserted at a position on the rear surface of the lower reinforcement fitting 60 behind the insertion hole 62. A recess (not shown) having a lateral width and an upper and lower width than the hole 62 is provided in communication with the insertion hole 62, and the first nut 34 has a front surface at the bottom of the recess and a circumferential surface at the inside of the recess. It can be inserted without contacting the circumferential surface. In addition, screw holes 63 for screwing the mounting screws 32 are formed respectively on the upper side of the insertion hole 62 on the front surface of the lower reinforcing metal fitting 60 and on the upper side of the reinforcing step 61 on both left and right side surfaces of the lower reinforcing metal fitting 60 It is set up. In the rear surface of the lower reinforcement fitting 60, the left and right sides of the recess are thicker than the rear end surface of the vertical rail 5 at the left and right.

The horizontal rail 4 and the vertical rail 5 are connected as follows by using the above-mentioned reinforcing metal fittings 40, 50, 60.
First, the bolt head 33a of the connecting bolt 33 is hooked to the rail connecting portion 7 at an appropriate position of the horizontal rail 4 disposed on the back plate 2a, and the first nut 34 is fastened and the fixing member 36 is attached. The connecting bolt 33 is fixed to the lateral rail 4. On the other hand, in the vertical rail 5, the upper reinforcement fitting 40 is the rail upper connection portion, the middle reinforcement fitting 50 is the rail middle connection portion, and the lower reinforcement bracket 60 is the rail lower connection portion. The reinforcement fitting 40, 50, 60 is fixed to the vertical rail 5 by the fitting screw 32. Then, in the rail upper connection portion, the second nut 35 is inserted with the threaded portion of the connection bolt 33 inserted into the recess 43, the U-shaped groove 42, and the insertion groove 11 and the first nut 34 embedded in the recess 43. Are fastened from the front side of the vertical rail 5. Further, in the rail middle connection portion, the second nut 35 is placed on the front side of the vertical rail 5 in a state where the screw portion of the connection bolt 33 is inserted into the recess and the insertion hole 54 and the first nut 34 is embedded in the recess. Sign from Furthermore, in the lower rail connection portion, the second nut 35 is placed on the front side of the vertical rail 5 in a state where the screw portion of the connection bolt 33 is inserted into the recess and the insertion hole 62 and the first nut 34 is embedded in the recess. Sign from Then, the vertical rail 5 is connected to the horizontal rail 4 via the reinforcing fittings 40, 50, 60.

  And in the said connection state, while the rear surface (especially peripheral part of a crevice) of reinforcement metal fittings 40, 50, 60 is contacting the front of side rail 4, the front and the right-and-left both sides of reinforcement metal fittings 40, 50, 60 are On the front surface of the vertical rail 5 and on the inner surfaces of the left and right side surfaces, the reinforcing stepped portions 41 and 61 and the fitting grooves 53 of the reinforcing metal fittings 40, 50 and 60 are further arranged on the rear end surfaces of the notched stepped portions 12, 14 and 17 They are in contact with each other. Further, the first nut 34 is embedded in the recess in a state where the front surface does not contact the bottom surface of the recess of the reinforcing metal fitting 40, 50, 60 and the peripheral surface does not contact the inner peripheral surface of the recess.

  According to the box 1 having the above-described configuration, at the rail connecting portion of the vertical rail 5 in which the left and right side portions are bent backward, reinforcing metal fittings 40, 50, 60 are provided between the left and right side surfaces of the vertical rail 5. With the front and right and left side surfaces of the reinforcing metal fittings 40, 50 and 60 in contact with the front and left and right side surfaces of the vertical rail 5 from the inner side, the reinforcing metal fittings 40, 50 and 60 are attached to the vertical rail 5. While fixing, the horizontal rail 4 and the vertical rail 5 are connected via the said reinforcement metal fittings 40, 50, 60. As shown in FIG. Therefore, the strength of the connection portion between the horizontal rail 4 and the vertical rail 5 is improved, and the contact surface between the horizontal rail 4 and the vertical rail 5 side becomes wider than in the prior art. Even if the device is attached to the vertical rail 5, the vertical rail 5 is not deformed, and problems such as interference between the wiring cover cover and the electric device do not occur.

Also, while providing the notch stepped portions 12, 14 and 17 in the rail connecting portion of the vertical rail 5, a reinforcement stepped portion 41 in which the rear end surfaces of the notch stepped portions 12, 14 and 17 abut the reinforcing fittings 40, 50 and 60. , 61 and the insertion groove 53, the strength of the vertical rail 5 can be further improved along with the fixing of the reinforcement fittings 40, 50, 60, and deformation of the vertical rail 5 can be prevented more reliably. .
Furthermore, a recess is provided in each of the reinforcement fittings 40, 50, 60, and the first nut 34 for fixing the connection bolt 33 to the lateral rail 4 is prepared with the front surface at the bottom of the recess and the peripheral surface at the inner peripheral surface of the recess. It is embedded in the recess without contact. Therefore, even if a load in the twisting direction is applied to the vertical rail 5 by attaching the wiring cover cover or the electric device, the load is not directly transmitted to the first nut 34, so the first nut 34 is damaged or deformed, Looseness and the like do not easily occur, and the connection between the horizontal rail 4 and the vertical rail 5 can be well maintained.

  The electric device storage box according to the present invention is not limited to the aspect of the above embodiment, and the entire configuration of the electric device storage box may, of course, be a lateral rail, a vertical rail, or a reinforcing bracket. The configurations of the above can be appropriately changed as needed without departing from the spirit of the present invention.

For example, in the above embodiment, although three types of reinforcement fittings, that is, upper reinforcement fitting, middle reinforcement fitting, and lower reinforcement fitting, are used, even if only one type of reinforcement fitting corresponding to the middle reinforcement fitting is used, for example There is no problem at all, and the shape, presence or the like of the notch step portion provided in the vertical rail can be appropriately changed in accordance with the shape of the reinforcing fitting or the like.
Further, only the upper and lower end portions of the vertical rail may be connected to the horizontal rail, or the vertical rail may be connected to the horizontal rail at four or more locations.

Furthermore, when the first nut is embedded in the recess, even if the front surface of the first nut is in contact with the bottom of the recess, an effect of improving the strength of the vertical rail can be achieved.
In addition, a reinforcing metal fitting may be attached also in places other than the rail connection part in a vertical rail, and it may be comprised so that the strength improvement of a vertical rail may be aimed at.

  1 · · Box for storing electric device, 2 · · Box body, 2a · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 12 insertion groove, 12 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Upper reinforcement bracket, 41 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · shaped groove, 43 ... concave portion, 44,55,63 ... screw hole, 50 ... in the reinforcement bracket 51 ... main body, 52 ... bolt fixing portion, 53 ... fitting groove (abutment portion), 54 · · Insertion holes, 60 · · · lower reinforcement fitting, 61 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

Claims (2)

A lateral rail extending in the left-right direction is disposed on the back plate of the box body, and a vertical rail connected to the front of the lateral rail is connected to the vertical rail which is bent toward the rear side. ,
Reinforcement fittings are inserted between the left and right sides of the vertical rail, and the front and left and right sides of the reinforcement are in contact with the front and left and right sides of the vertical rail from the inner side, the reinforcement in the vertical rail A housing for an electric device storage, characterized in that a metal fitting is fixed and the horizontal rail and the vertical rail are connected via the reinforcing metal fitting.   The left and right side surfaces of the vertical rail are provided with notched portions cut out from the rear end side, while the left and right side surfaces of the reinforcing metal fitting are provided with contact portions with which the rear end surfaces of the notched portions abut. The electrical device storage box according to claim 1, characterized in that

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