JP2018174664A - switchboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switchboard which allows lifting conveyance in structure having a wiring opening which opens on the front face on a housing top board.SOLUTION: A switchboard has: a housing 2; holding part attachment parts 30 which are provided on right and left ends of a top board 21 for attaching a holding part to be used in conveyance; front and rear reinforcement materials 31 which are provided at the right and left ends of the top board 21 by extending in a longitudinal direction, and overlap with the holding part attachment parts 30 in planar view; and frame reinforcement materials 32 which are provided inside fixed frame parts 25b. In the housing 2, a wiring opening 21h is formed on the top board 21, a frame part 25 on an upper side has the fixed frame parts 25b and attachable/detachable frame parts 25a, and the wiring opening 21h opens on a front side X1 in a state of detaching the attachable/detachable frame parts 25a. The frame reinforcement materials 32 extend from the outside to the inside of right and left to be exposed from the fixed frame part 25b. Exposed parts 32a and the attachable/detachable frame parts 25a are constituted to be fixable by a fastener.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a switchboard.

  A distribution board such as a distribution board or a control board includes, for example, a circuit breaker and a box-shaped housing that accommodates the circuit breaker and has an opening facing the front side, as exemplified in Patent Document 1. A wiring opening is formed in the top plate of the housing to allow wiring to be drawn from the outside to the inside of the housing.

JP 2011-36036 A

  A frame portion is formed at the edge of the housing opening. The frame portion is formed by bending each plate member constituting the housing to the center side of the opening and further to the back side. The frame portion ensures the strength of the housing. In Patent Document 1, in order to allow the wiring to be pulled from the front side to the back side as it is, the wiring opening is also opened on the front side, and the upper side frame portion is configured to be removable.

  However, in a structure in which the upper side frame part is removable, when holding parts such as hooks are provided on the left and right ends of the top plate of the housing and the switchboard is lifted and transported, the weight of the switchboard causes The front left and right of the plate may move up and down relatively and may be deformed, and it may be difficult to lift and convey.

  The present disclosure has been made paying attention to such a problem, and an object of the present disclosure is to provide a switchboard that can be lifted and transported in a structure having a wiring opening that opens to the front surface of the housing top plate. is there.

  In order to achieve the above object, the present disclosure takes the following measures.

That is, the switchboard of the present disclosure is
It has a box shape having an opening facing the front side, a frame part is provided at the edge of the opening in front view, a wiring opening is formed on the top plate, and the frame part on the upper side of the opening is a fixed frame part And a housing having a detachable frame portion, wherein the wiring opening opens to the front side in a state where the detachable frame portion is removed, and
A holding portion mounting portion for mounting a holding portion used at the time of transportation, provided on the left and right ends of the top plate,
Front and rear reinforcements provided in the front and rear direction at the left and right ends of the top plate, and overlapped with the holding portion mounting portion in plan view;
A frame reinforcing material provided inside the fixed frame portion,
The frame reinforcing member extends from the left and right outer sides to the inside and is exposed from the fixed frame portion, and is configured such that the exposed portion and the detachable frame portion can be fixed by a fastener.

  According to this configuration, the front and rear reinforcing material is provided at a position overlapping with the holding part attaching part to which the holding part such as a hook is attached in a plan view, and the frame reinforcing material is further provided inside the fixed frame part. The frame reinforcement made is fixed directly to the frame. By connecting the detachable frame part directly to the frame reinforcing material, the load applied to the cantilevered fixed frame part can be distributed. Therefore, it is possible to suppress or prevent the housing from being bent during the lifting and transporting.

The perspective view which shows the switchboard of this indication. The top view which shows the top plate of a housing | casing, AA site | part sectional drawing, and BB site | part sectional drawing. The front view which shows a frame reinforcement material, the front-back reinforcement material, and a frame part.

  An embodiment of the present disclosure will be described with reference to the drawings.

  As shown in FIG. 1, the switchboard includes a plurality of electrical devices 1 and a housing 2 that houses the plurality of electrical devices 1 and has an opening 20 facing the front side X1. Examples of the electric device 1 include a plurality of circuit breakers having an operation switch 10 and a control device. In this embodiment, the switchboard has the door 3 that can close the opening 20 of the housing 2, but a protective plate may be attached instead of the door.

  The housing 2 is made of metal and has a box shape having an opening 20 as shown in FIG. 1, and the top plate 21, the back plate 22, the side plate 23, and the bottom plate 24 form a space for housing the electrical device 1. doing. A frame portion 25 is provided at the edge of the opening 20 in a front view. The frame portion 25 is formed by bending each plate member (the top plate 21, the side plate 23, and the bottom plate 24) constituting the housing 2 toward the center side and further toward the back side X2.

  As shown in FIGS. 1 and 2, the top plate 21 is formed with a wiring opening 21 h for drawing a wiring from the outside to the inside of the housing 2. In the present embodiment, the wiring opening 21h has a C-shape in plan view that opens not only in the vertical directions Y1 and Y2 but also in the front side X1. The frame part 25 on the upper side of the opening 20 in front view has a fixed frame part 25b and a detachable frame part 25a. With the detachable frame portion 25a removed, the wiring opening 21h opens to the front side X1, and when the detachable frame portion 25a is attached, the wiring opening 21h is blocked from the front and becomes invisible.

  As shown in FIG. 1 and FIG. 2, a pair of holding portion attachment portions 30 for attaching a holding portion (not shown) such as a hook used during transportation is provided on the left and right ends of the top plate 21 of the housing 2. It has been. As for the holding | maintenance part attaching part 30, a screw groove, a bolt groove, etc. are mentioned. A holding portion such as a hook may be removed after the switchboard is installed, or may be left attached to the housing 2.

  Since the top plate 21 has a wiring opening 21h that opens on the front side X1, it may be bent and deformed when it is lifted by a pair of holding portions.

  Therefore, front and rear reinforcing materials 31 extending in the front-rear direction (X1, X2) are provided on the left and right ends of the top plate 21. The front / rear reinforcing material 31 is disposed at a position overlapping the holding portion mounting portion 30 in plan view. The front / rear reinforcing material 31 is formed to have a dimension corresponding to the depth dimension of the top plate 21. In the present embodiment, the front and rear reinforcing material 31 has the same dimension as the depth dimension of the top plate 21, but is not limited thereto. The front-rear reinforcing material 31 may have a dimension that is 0.5 times or more the depth dimension of the top plate 21. In the present embodiment, as shown in FIGS. 2 and 3, the front and rear reinforcing material 31 is provided at the corners of the top plate 21 and the side plate 23 that constitute the housing 2. The front / rear reinforcing material 31 has an L-shaped cross section having a horizontal plate 31a and a vertical plate 31b. A horizontal plate 31a and a vertical plate 31b of the front and rear reinforcing material 31 are fixed to the top plate 21 and the side plate 23 of the housing 2, respectively. In this embodiment, it is fixed by welding, but other fixing methods may be adopted. For example, screwing can be mentioned.

  As shown in FIG. 2, the fixed frame portion 25 b extends from the left and right outer sides to the inner side so that the lateral width of the wiring opening 21 h is smaller on the front side than on the back side. A frame reinforcing member 32 is provided inside the fixed frame portion 25b. Thereby, compared with the case where the horizontal width of the wiring opening 21h is constant, the frame reinforcing member 32 becomes longer, so that the reinforcing effect can be enhanced. As another example, the fixed frame portion 25b may not extend inward, and the lateral width of the wiring opening 21h may be constant.

  The frame reinforcing member 32 extends from the left and right outer sides to the inner side and is exposed from the fixed frame portion 25b. The exposed portion 32a and the removable frame portion 25a are fasteners (not shown) such as screws or bolts. It can be fixed with. The exposed portion 32a is provided with a screw hole or a bolt hole as the fixing portion 32b.

  As shown in FIGS. 2 and 3, the fixed frame portion 25b and the detachable frame portion 25a include an upper plate 25c, a front plate 25d extending downward from the upper plate 25c, and a lower portion of the front plate 25d from the lower side to the back side X2. It has a U-shaped cross section having a lower plate 25e that faces. The detachable frame portion 25a is fixed at at least two locations of the upper plate 25c and the front plate 25d. For fixing, insertion holes of fasteners formed with each other are used. The frame reinforcing member 32 is composed of an upper plate, a front plate, and a lower plate, like the fixed frame portion 25b. The frame reinforcing member 32 is fixed to the fixed frame portion 25b by welding. Further, the frame reinforcing member 32 is adjacent to the front and rear reinforcing member 31, and the frame reinforcing member 32 and the front and rear reinforcing member 31 are fixed and connected by welding.

  Thus, by providing the front / rear reinforcing material 31 extending in the front / rear direction (X1, X2) and the frame reinforcing material 32 extending in the left / right direction, the rigidity as the surface of the top plate 21 of the housing 2 is enhanced. Furthermore, the rigidity as the surface of the top plate 21 of the housing | casing 2 is further improved because the front-rear reinforcement material 31 and the frame reinforcement material 32 are connected by welding.

As described above, the switchboard of the present embodiment is
It has a box shape having an opening 20 facing the front side X1, has a frame portion 25 at the edge of the opening 20 in a front view, a wiring opening 21h is formed in the top plate 21, and a frame portion 25 on the upper side of the opening 20. Has a fixed frame portion 25b and a detachable frame portion 25a, and the housing 2 in which the wiring opening 21h opens to the front side X1 with the detachable frame portion 25a removed.
A holding part attaching part 30 for attaching a holding part provided at the left and right end parts of the top plate 21 and used during conveyance;
Front and rear reinforcing members 31 that extend in the front-rear direction at the left and right ends of the top plate 21 and overlap the holding portion mounting portion 30 in plan view;
A frame reinforcing member 32 provided inside the fixed frame portion 25b,
The frame reinforcing member 32 extends from the left and right outer sides to the inside and is exposed from the fixed frame portion 25b, and is configured such that the exposed portion 32a and the detachable frame portion 25a can be fixed by a fastener.

  According to this configuration, the front and rear reinforcing material 31 is provided at a position overlapping the holding portion attaching portion 30 to which a holding portion such as a hook is attached in a plan view, and the frame reinforcing material 32 is further provided inside the fixed frame portion 25b. The pair of frame reinforcing members 32 is directly fixed to the frame portion 25a. Since the detachable frame portion 25a is directly connected to the frame reinforcing member 32, the load applied to the cantilevered fixed frame portion 25b can be dispersed. Therefore, it becomes possible to suppress or prevent the housing 2 from being bent during the lifting and conveying.

  In the present embodiment, the fixed frame portion 25b extends from the left and right outside to the inside so that the lateral width of the wiring opening 21h is smaller on the front side than on the back side.

  According to this configuration, since the frame reinforcing member 32 is longer than the structure in which the lateral width of the wiring opening 21h does not change between the back side and the near side, the reinforcing effect can be improved.

  In the present embodiment, the fixed frame portion 25b and the detachable frame portion 25a include an upper plate 25c, a front plate 25d that goes downward from the upper plate 25c, and a lower plate 25e that goes from the lower portion of the front plate 25d to the back side, The detachable frame portion 25a is fixed at at least two locations of the upper plate 25c and the front plate 25d.

  According to this configuration, the two portions of the upper plate 25c and the front plate 25d that intersect each other in the rigid U-shaped frame portion 25 are used, so that the strength can be further improved.

  In the present embodiment, the front / rear reinforcing material 31 is provided at the corners of the top plate 21 and the side plate 23 constituting the housing 2 and has an L-shaped cross section having a horizontal plate 31a and a vertical plate 31b, and the horizontal plate 31a. The vertical plate 31b is fixed to the top plate 21 and the side plate 23 of the housing 2, respectively.

  According to this configuration, it can be reinforced with a simple configuration and further has an L shape, so that the housing space of the housing 2 is not impaired.

  The present disclosure is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present disclosure.

  For example, in the above-described embodiment, the wiring is drawn only from above, and the embodiment in which the wiring opening is not formed in the bottom plate 24 is taken as an example, but the present invention is not limited to this. For example, when wiring is drawn in from both the upper and lower sides, wiring openings are formed in both the top plate 21 and the bottom plate 24, and both wiring openings are open to the front side. In this case, since the rigidity of the frame portion on the front side is weakened both vertically, the front left and right of the top plate and the bottom plate are relatively moved up and down and easily deformed when suspended. Therefore, it is easier to confirm the effect of the reinforcing structure.

  In the above description, the distribution board has been described as an example of the distribution board. However, the present disclosure can also be applied to the distribution board as the control board.

DESCRIPTION OF SYMBOLS 2 ... Housing 21 ... Top plate 21h ... Wiring opening 23 ... Side plate 25 ... Frame part 25a ... Detachable frame part 25b ... Fixed frame part 30 ... Holding part attachment part 31 ... Front-rear reinforcement 31a ... Horizontal board 31b ... Vertical board 32 ... Frame reinforcing material 32a ... Exposed part 25c ... Upper plate 25d ... Front plate 25e ... Lower plate X1 ... Front side

Claims (4)

It has a box shape having an opening facing the front side, a frame part is provided at the edge of the opening in front view, a wiring opening is formed on the top plate, and the frame part on the upper side of the opening is a fixed frame part And a housing having a detachable frame portion, wherein the wiring opening opens to the front side in a state where the detachable frame portion is removed, and
A holding portion mounting portion for mounting a holding portion used at the time of transportation, provided on the left and right ends of the top plate,
Front and rear reinforcements provided in the front and rear direction at the left and right ends of the top plate, and overlapped with the holding portion mounting portion in plan view;
A frame reinforcing material provided inside the fixed frame portion,
The frame reinforcing member extends from the left and right outer sides and is exposed from the fixed frame portion, and is configured to be able to fix the exposed portion and the detachable frame portion with a fastener. switchboard.   The switchboard according to claim 1, wherein the fixed frame portion extends from the left and right outer sides to the inner side so that the width of the wiring opening is smaller on the front side than on the back side. The fixed frame part and the detachable frame part have an upper plate, a front plate that goes downward from the upper plate, and a lower plate that goes from the lower part of the front plate to the back side,
The switchboard according to claim 1 or 2, wherein the detachable frame portion is fixed at at least two locations of the upper plate and the front plate.   The front and rear reinforcing members are provided at the corners of the top plate and the side plate constituting the casing and have an L-shaped cross section having a horizontal plate and a vertical plate, and the horizontal plate and the vertical plate are respectively provided on the casing. The switchboard in any one of Claims 1-3 currently fixed to the top plate and the side plate.

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