JP6415375B2 - switchboard - Google Patents

Description

  The present disclosure relates to a switchboard.

  Distribution boards such as distribution boards and control boards have, for example, a circuit breaker having a projecting operation switch for opening and closing contacts, and an opening that houses the circuit breaker and faces the front side, as exemplified in Patent Document 1. A box-shaped housing and a door that closes an opening of the housing. A viewing window that opens the operation switch to the front side is formed on the door.

JP 2001-346305 A

  As a type of switchboard, a switchboard is known in which a door in which a viewing window that opens an operation switch to the front side is formed as an inner door, and an outer door is further provided outside the inner door.

  On the other hand, in an environment where a plurality of switchboards are arranged narrowly, a switchboard without the outer door is often used because the distance between the switchboards is narrow and there is no space for opening the outer door.

  However, in the switchboard without the outer door, the circuit breaker operation switch is always open to the front side through the viewing window, so it passes through the front of the switchboard and other workers working in front of the switchboard. The operator's arm or body may suddenly touch the operation switch, and the operation switch may be operated.

  This indication is made paying attention to such a subject, and the object is to provide the switchboard which prevents that an operation switch is operated unexpectedly.

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

  That is, the switchboard of the present disclosure includes a circuit breaker having an operation switch, a housing that houses the circuit breaker and has an opening facing the front side, and a door that can close the opening of the housing, The door has a viewing window that opens the operation switch to the front side, and a guard portion that straddles the viewing window from the front side, and the guard portion is disposed at a position overlapping the operation switch in a front view. Yes.

  In this way, since the guard portion is placed over the viewing window from the front side and is positioned so as to overlap with the operation switch in front view, even if the arm or body suddenly approaches the operation switch from the front side, Since the contact with the operation switch is prevented, it is possible to prevent the operation switch from being operated unexpectedly.

The perspective view which shows the switchboard of this indication. The front view of a switchboard. AA site | part sectional drawing of FIG. The front view which shows the inside of a switchboard. An explanatory front view showing a circuit breaker, an inspection window, and a guard part. The figure which shows the 1st wiring fixing frame. The figure which shows the 2nd wiring fixing frame. Explanatory drawing which shows the assembly | attachment of the 1st and 2nd wiring fixing frame. The figure which shows the conventional wiring fixed frame.

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

  As shown in FIGS. 1 and 2, the switchboard includes a plurality of circuit breakers 1 having operation switches 10, a housing 2 that houses the plurality of circuit breakers 1 and has an opening 20 facing the front side X1, and a housing And the door 3 capable of closing the two openings 20.

  As shown in FIGS. 1 and 3, the operation switch 10 of the circuit breaker 1 can be switched between the on state and the off state in order to open and close the contacts, and is attached to the housing 2 side. Projecting toward the side X1.

  As shown in FIGS. 1 to 3, the housing 2 has a box shape having an opening 20, and includes the top plate portion 21, the back plate portion 22, the side plate portion 23, and the bottom plate portion 24, and includes the circuit breaker 1. A space for storing the space is formed. As shown in FIG. 3, each electrical device (including the circuit breaker 1) constituting the switchboard is attached to the intermediate plate 4, and the intermediate plate 4 is attached to the back plate portion 22.

  As shown in FIGS. 1 to 3, the door 3 is attached to the side plate portion 23 so as to be openable and closable on the front side X <b> 1 of the electric device including the circuit breaker 1. The door 3 is formed with a viewing window 30 corresponding to the circuit breaker 1, and the operation switch 10 of the circuit breaker 1 is opened (exposed) from the viewing window 30 to the front side X1. The door 3 is provided to shield the conductive portion of the internal electrical equipment to ensure safety and improve the appearance. In the present embodiment, the door 3 is a double door, but is not limited thereto. For example, a single door may be used.

  As shown in FIGS. 2, 3, and 5, the door 3 is provided with a guard portion 5 that straddles the viewing window 30 from the front side X <b> 1. The guard unit 5 is disposed at a position overlapping the operation switch 10 in front view. Specifically, the guard unit 5 includes a bar-like member 50 that straddles the observation window 30 and a plurality of support parts 51 that support the bar-like member 50 using the door 3 as a scaffold. In the present embodiment, the guard portion 5 is formed of a resin such as nylon, but may be formed of a metal such as iron or aluminum. As shown in FIG. 3, the support portion 51 includes a base 51 a screwed to the door 3, a hole or recess insertion holding portion 51 b that extends from the base 51 a to the front side X <b> 1 and into which a rod-like member 50 is inserted. Have.

  As shown in FIG. 5, a plurality of circuit breakers 1 and their operation switches 10 are arranged linearly, and a plurality of viewing windows 30 are arranged linearly corresponding to the plurality of operation switches 10. The rod-shaped member 50 is supported by at least three support portions 51 and 51 ′ including a support portion 51 ′ disposed between the viewing windows 30. In the present embodiment, the three viewing windows 30 are arranged in a straight line, but the present invention is not limited to this. It is sufficient if there are two or more viewing windows 30 arranged in a straight line.

  In this embodiment, as shown in FIG. 5, two support portions 51 ′ are disposed between the three viewing windows 30, and the support portions 51 are disposed at both ends of the rod-like member 50, for a total of four support portions. Although the rod-shaped member 50 is supported by 51 and 51 ', it is not limited to this. The bar-shaped member 50 should just be supported by the at least 3 support part including the one support part arrange | positioned between the two viewing windows 30. FIG. Depending on the rigidity of the rod-shaped member 50, the rod-shaped member 50 may be supported by two or more support portions 51.

  As shown in FIG. 4, wiring is connected to electrical devices (including a circuit breaker) constituting the switchboard. For example, the circuit breaker 1 which is an example of an electrical device is connected to a wiring S drawn from outside. Since the circuit board is provided with a number of circuit breakers 1, it is necessary to bundle and fix the respective wires S together.

  In the present embodiment, as shown in FIG. 4, the circuit breaker group 1G in which a plurality of circuit breakers 1 are arranged in a row is arranged on the left and right so that the secondary side of the circuit breaker is inside, A wiring space SP1 is formed in In the present embodiment, a wiring space SP1 is formed in the center of the housing 2 from the upper end to the lower end. In the wiring space SP1, a wiring fixing frame 6 that bundles the wiring S is provided. The top plate portion 21 constituting the housing 2 is formed with wiring cutouts 21a that open in the vertical direction (Y1, Y2) and the front side X1 so that the wiring S from outside can be pulled in as it is. A mounting cover 21b (see FIG. 2) that closes the front side X1 of the notch 21a is detachably mounted.

  As shown in FIG. 3, the wiring fixing frame 6 is screwed into a screw groove (not shown) formed in the middle plate 4 with the middle plate 4 as a base surface. As shown in FIG. 9, the conventional wiring fixing frame 106 includes a front frame 160, a pair of side frames 161 extending backward from both ends of the front frame 160, and a rear end of each side frame 161. An outer extension piece 162 extending outward, and a wiring housing space SP2 is formed by the front frame body 160, the side frame body 161, and the base surface 4, and the outer extension piece 162 is formed with respect to the base surface 4 A configuration in which a screw insertion portion 163 used for screwing is formed is common.

  However, in such a configuration, since the pair of outer extending pieces 162 occupy a space, the wiring housing space SP2 formed by the front frame body 160, the side frame body 161, and the base surface 4 becomes small, and the bundled wiring The amount of will decrease. The switchboard has a limit in enlarging the wiring fixing frame 106 because a large number of electric devices including the circuit breaker 1 are arranged inside the narrow housing 2.

  Therefore, in the present embodiment, the wiring fixing frame 6 is configured as follows.

  As shown in FIG. 6, the wiring fixing frame 6 includes a front frame body 60, a pair of side frame bodies 61 that extend backward from both ends of the front frame body 60, and a rear end of each side frame body 61 inward. An inner extension piece 62 extending, and a wiring housing space SP <b> 2 is formed by the front frame body 60, the side frame body 61, and the base surface 4. As shown in FIGS. 6 and 8, the inner extension piece 62 is formed with a screw insertion portion 63 used for screwing with a screw v for the base surface 4. In the present bristles, the screw insertion portion 63 of the wiring fixing frame 6 is a through hole, but may be formed in a cutout shape that opens at the end of the inner extension piece 62. A tool allowance space 64 for turning the screw v is formed in the front frame 60 coaxially with the screw insertion portion 63. The tool allowance space 64 is a space for passing a tool t such as a screwdriver from the front side X1.

  In the present embodiment, the front frame body 60 and the side frame body 61 have a flat plate shape, but are not limited thereto and can be variously modified. For example, the front frame and the side frame may be integrally curved.

  When the amount of the wiring S is large, as shown in FIG. 3, in addition to the first wiring fixing frame 6 screwed to the intermediate plate 4, a second wiring fixing frame 6 ′ indicated by a dotted line may be provided. Good. As shown in FIG. 7, the second wiring fixing frame 6 ′ has substantially the same configuration as the first wiring fixing frame 6, except that the screw insertion portion 63 is opened at the end of the inner extension piece. Is. Of course, the screw insertion portion 63 of the second wiring fixing frame 6 'may be a through hole. As shown in FIG. 7, the screw insertion portion 63 of the second wiring fixing frame 6 ′ has a notch shape that opens at the lower end of the inner extension piece 62, so that it is possible to suppress a drop when the screw is loosened.

  As shown in FIG. 8, in the front view, the positions of the screw insertion part 63 and the tool allowance space 64 of the second wiring fixing frame 6 ′ are the screw insertion part 63 and the tool allowance space 64 of the first wiring fixing frame 6. The position is different. A thread groove 60 a (see FIGS. 8 and 6) is formed in the front frame body 60 of the first wiring fixing frame 6. As a result, as shown in FIGS. 3 and 8, the front frame body 60 of the first wiring fixing frame 6 is used as the base surface of the second wiring fixing frame 6 ′, so that the two wiring fixing frames 6, 6 ′ are formed. It can be fixed in two stages.

  In the present embodiment, the plurality of wiring fixing frames 6 and 6 ′ are configured to be stacked and fixed in two stages, but the number of wiring fixing frames is not limited to two. Three or more wiring fixing frames may be provided and fixed in three or more stages.

  When the first wiring fixing frame 6 is attached to the intermediate plate 4 in advance as an essential product by screws and the second wiring fixing frame 6 ′ is sold separately as an optional product, the first wiring fixing frame 6 is used. The screw insertion portion 63 of the frame 6 is a through-hole, and the screw insertion portion 63 of the second wiring fixing frame 6 ′ is notched, and a screw is temporarily fixed in the screw groove 60 a of the first wiring fixing frame 6. It becomes easier to handle and user friendly.

  In the above description, the wiring fixing frames 6 and 6 ′ for bundling the wiring S connected to the circuit breaker 1 that is an electric device have been described. However, the wiring fixing for bundling the wiring connected to the electric device other than the circuit breaker 1. It can also be applied to frames.

  As described above, the switchboard of the present embodiment includes the circuit breaker 1 having the operation switch 10, the housing 2 that houses the circuit breaker 1 and has the opening 20 facing the front side X <b> 1, and the opening 20 of the housing 2. And a door 3 that can be closed. The door 3 includes a viewing window 30 that opens the operation switch 10 to the front side X1, and a guard portion 5 that straddles the viewing window 30 from the front side X1. The guard unit 5 is disposed at a position overlapping the operation switch 10 in front view.

  In this way, the guard unit 5 straddles the viewing window 30 from the front side X1 and is disposed at a position overlapping the operation switch 10 in front view, so that the arm and body suddenly approach the operation switch 10 from the front side X1. Even so, since the guard unit 5 prevents the operation switch 10 from being contacted, it is possible to prevent the operation switch 10 from being operated unexpectedly.

  In the two-point support in which both ends of the rod-shaped member 50 are supported by the support portion 51, the rod-shaped member 50 is easily bent as the rod-shaped member 50 becomes longer, and in some cases, the function of the rod-shaped member 50 protecting the operation switch 10 appropriately. There is a risk that it cannot be secured.

  Therefore, in this embodiment, a plurality of viewing windows 30 are arranged in a straight line at intervals. The guard part 5 has a bar-like member 50 straddling a plurality of viewing windows 30, and a plurality of support parts 51, 51 'that support the bar-like member 50 using the door 3 as a scaffold. The rod-shaped member 50 is supported by at least three support portions 51 and 51 ′ including a support portion 51 ′ disposed between the viewing windows 30.

  According to this structure, even if the rod-shaped member 50 becomes long, the deflection of the rod-shaped member 50 can be suppressed as compared with the two-point support, and the function of the rod-shaped member 50 protecting the operation switch 10 can be appropriately ensured. . Nevertheless, if the guard portion 5 is formed of a material such as a resin that is lower in rigidity than a metal but lightweight, it is possible to reduce the weight while ensuring the strength.

  In the present embodiment, a wiring fixing frame 6 that is screwed to the base surface 4 and bundles the wiring S connected to the circuit breaker 1 is provided. The wiring fixing frame 6 includes a front frame 60, a pair of side frames 61 extending backward from both ends of the front frame 60, and inner extending pieces 62 extending inward from the rear ends of the side frames 61. Have. A wiring housing space SP <b> 2 is formed by the front frame body 60, the side frame body 61, and the base surface 4. A screw insertion portion 63 used for screwing the base surface 4 is formed in the inner extension piece 62. A tool allowance space 64 for turning a screw is formed on the front frame 60 coaxially with the screw insertion portion 63.

  As described above, since the extending piece 62 in which the screw insertion portion 63 is formed is bent inward, there is no space between the extending piece 62 and the wiring accommodating space SP2, and the wiring accommodating space SP2 can be secured widely. It becomes. Nevertheless, since the tool allowance space 64 is formed coaxially with the screw insertion portion 63, the screwing operation is not difficult.

  In the present embodiment, a plurality of wiring fixing frames 6, 6 'are provided. Each wiring fixing frame 6, 6 ′ is different from the other wiring fixing frames in the positions of the screw insertion portion 63 and the tool allowance space 64 in the front view, and the front frame body 60 of a certain wiring fixing frame 6 is different from the other. As a base surface of the wiring fixing frame 6 ′, a plurality of wiring fixing frames 6, 6 ′ are stacked and fixed in multiple stages.

  According to this configuration, the degree of freedom in handling the wiring S is improved, and the working efficiency can be improved.

  In the present embodiment, the screw insertion portion 63 is formed in a cutout shape that opens at the end of the inner extension piece 62.

  According to this configuration, when the screw v is stopped in advance, the wiring fixing frame can be attached and detached simply by loosening the screw v without completely removing it, and it is possible to prevent the screw from being accidentally dropped, and the installation work is easy. It becomes.

  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, the switchboard to which the wiring fixing frame 6 is applied may further have an outer door outside the door 3. The rod-shaped member 50 is a round bar, but is not limited thereto, and the shape can be changed as appropriate.

  The wire fixing frame 6 is used to bundle the wires S connected to the circuit breaker 1, but can also be used to bundle wires connected to electric devices other than the circuit breaker 1. That is, the switchboard of the present disclosure includes an electrical device that constitutes the switchboard, a casing 2 that houses the electrical device, and a wiring fixing frame 6 that is screwed to the base surface and fixes the wiring connected to the electrical device. The wiring fixing frame 6 includes a front frame 60, a pair of side frames 61 extending backward from both ends of the front frame 60, and inner extending pieces 62 extending inward from the rear ends of the side frames 61. The front frame body 60 and the side frame body 61 form a wiring housing space SP2, and the inner extension piece 62 is formed with a screw insertion portion 63 used for screwing. The front frame body A tool allowance space 64 for turning a screw is formed in 60 on the same axis as the screw insertion portion 63.

  The present disclosure can also be specified as a wiring fixing frame. That is, the wiring fixing frame of the present disclosure is a wiring fixing frame that is screwed to the base surface on the switchboard side and fixes the wiring connected to the electrical equipment constituting the switchboard, and includes the front frame body 60 and the front frame body. A pair of side surface frames 61 extending rearward from both ends of the 60 and inner extending pieces 62 extending inward from the rear ends of the respective side surface frame members 61. A wiring housing space SP2 is formed, a screw insertion portion 63 used for screwing is formed in the inner extension piece 62, and a screw is coaxially provided in the front frame 60 with the screw insertion portion 63. A tool allowance space 64 for turning is formed.

  In this embodiment, ten operation switches 10 of the circuit breaker 1 are opened by one observation window 30, but one or more operation switches 10 of the circuit breaker 1 are opened by one observation window 30. For example, it is not limited to this. The number of circuit breakers 1 constituting the circuit breaker group 1G can be changed as appropriate.

  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 1 ... Circuit breaker 10 ... Operation switch 2 ... Housing 20 ... Opening 3 ... Door 30 ... Window 4 ... Middle board (base surface)
DESCRIPTION OF SYMBOLS 5 ... Guard part 50 ... Bar-shaped member 51, 51 '... Support part 6 ... Wiring fixing frame 60 ... Front frame (base surface)
61 ... Side frame body 62 ... Inner extension piece 63 ... Screw insertion part 64 ... Tool allowance space SP2 ... Wiring accommodation space X1 ... Front side

Claims (3)

A circuit breaker having an operation switch;
A housing that houses the circuit breaker and has an opening facing the front side;
A door capable of closing the opening of the housing,
The door has a viewing window that opens the operation switch to the front side, and a bar-like member that straddles the viewing window from the front side,
The rod-like member is disposed in a position overlapping the operation switch in a front view, spaced apart from the operation switch is disposed on the front side of the operation switch does not close the viewing window, the switchboard. A plurality of the viewing windows are arranged linearly at intervals,
The rod member is Ide straddle the plurality of viewing windows,
The switchboard has a plurality of support portions that support the rod-shaped member using the door as a scaffold,
The switchboard according to claim 1, wherein the bar-like member is supported by at least three support portions including a support portion disposed between the viewing windows.   The switchboard according to claim 2, wherein the support portion includes a base screwed to the door, and a hole or recess insertion holding portion that extends from the base toward the front side and into which the rod-like member is inserted. .

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