JP2009027780A - Distribution panel for residence - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a distribution panel for residence which is so excellent in user friendliness that operations of recovering a circuit breaker and opening/closing a front door can be more easily executed when the built-in circuit breaker trips. <P>SOLUTION: A front door is provided so that it can be slidable between a closed position for covering an operation handle 4a and an opening position exposing the operation handle 4a, and the sliding direction can be parallel to the rotation direction of the operation handle 4a and the direction from the opening position to the closed position can be a direction of rotation to the ON-side of the operation handle 4a. A handle operation piece 13 contacting the operation handle 4a at an OFF position in accordance with the sliding operation of the front door to the closed position and ON-operating the operation handle 4a is provided on the rear surface of the front door. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a residential distribution board incorporating at least one circuit breaker.

A residential distribution board incorporating a conventional general circuit breaker will be described with reference to FIG. FIG. 7 is an explanatory view showing a conventional residential distribution board 61.
The residential distribution board 61 includes a base 62 having an opening on the front surface and a front door 63 for opening and closing the front opening of the base 62. The base 62 includes a main breaker, And a plurality of branch breakers are incorporated. On the other hand, the front door 63 is pivotally mounted on the upper edge of the front opening of the base 62 with the left-right direction as an axis, and as shown in FIG. ing. An example of a residential distribution board having such a configuration is disclosed in Patent Document 1.

JP 2006-202902 A

  However, in the conventional residential distribution board 61, for example, when the main breaker trips, after the front door 63 is opened, the operation handle of the main breaker is turned to turn ON, and the front door 63 is closed again. There is a problem that it must be operated and is troublesome. In particular, if a power failure occurs due to a trip of the main breaker, it may be an operation in a dark place. In such a case, it can be said that the return operation of the main breaker and the opening / closing operation of the front door 63 are further troublesome. In general, a residential distribution board is often installed at a high place near the ceiling, as shown in FIG. 7. Therefore, in a configuration in which the front door 63 is pivoted up and down to open and close, There is also a problem that the front opening cannot be sufficiently opened due to obstruction and the opening / closing operation is troublesome.

  Therefore, the present invention has been made in view of the above problems, and when the built-in circuit breaker trips, the circuit breaker can be returned and the front door opened and closed more easily. It aims to provide an excellent residential distribution board.

In order to achieve the above object, the invention according to claim 1 of the present invention is characterized in that a circuit breaker can be installed inside and a base having an opening on the front side and the circuit breaker to turn on / off an electric circuit. A window portion that exposes an operation handle that is rotatably provided on the vessel, and a cover frame that is attached to cover the front surface of the base, and the operation means that is exposed through the window portion can be covered / exposed. And a front door attached to the base or cover frame, wherein the front door has a closed position covering the operation handle and an open position exposing the operation handle. So that the sliding direction is parallel to the turning direction of the operation handle, and the direction from the open position to the closing position is the turning direction of the operation handle to the ON side. While providing A handle operating member is provided on the rear surface of the front door for contacting the operation handle in the OFF position with the slide operation of the front door to the closed position, and for turning on the operation handle. .
According to a second aspect of the present invention, in the first aspect of the present invention, the handle operating member is composed of a shaft attachment portion that is pivotally attached to the rear surface of the front door and a tongue portion that contacts the operation handle. And a restricting means for restricting rotation of the tongue portion in a load direction applied to the tongue portion when the operation handle is operated to the ON side, and the handle operation member is provided with the opening operation of the front door. When the operation member comes into contact with the operation handle, the operation handle rotates and retracts due to a load associated with the operation handle. On the other hand, when the operation member comes into contact with the closing operation of the front door, the operation handle is operated to the ON side. It is characterized by that.
According to a third aspect of the present invention, in the first or second aspect of the invention, the front door is slidable in the vertical direction and is provided so as to expose the operation handle by sliding downward from the closed position. On the other hand, one of the locking portion or the locked portion is provided on the front door to be attached, and the other is provided on the front door, and the front door is closed by locking the locking portion and the locked portion. While being held at a position, a latch releasing means for releasing the latching between the latching portion and the latched portion by receiving a trip operation of the circuit breaker is provided.

According to the present invention, the handle operating member is provided on the rear surface of the front door so as to come into contact with the operation handle at the OFF position in accordance with the opening / closing operation of the front door. Is turned on. Therefore, the circuit breaker can be turned on only by closing the front door with a trip, and the usability in a dark place is very good.
According to the second aspect of the present invention, when the handle operating member and the operation handle come into contact with the opening operation of the front door, the handle operating member rotates and retracts due to a load accompanying the contact with the operation handle. On the other hand, when it comes in contact with the closing operation of the front door, the operation handle is attached to the ON side so that it can be operated. Therefore, it is possible to prevent a situation in which the handle operating member applies an excessive load to the operating handle already in the OFF position, and the circuit breaker is damaged or broken.
Furthermore, according to the invention described in claim 3, the circuit breaker is provided with a lock release means for releasing the lock between the lock portion and the locked portion by receiving the trip operation of the circuit breaker. When tripping, the front door is automatically opened to expose the operation handle. Therefore, the operator or the like does not need to manually open the front door one by one when tripping, and the usability is extremely good. In addition, because the front door is provided so that the operation handle is exposed by sliding downward from the base, even if it is installed at a high place near the ceiling, the ceiling is obstructed and the operation handle is sufficiently There is no problem that it cannot be exposed or the opening / closing operation is troublesome.

  Hereinafter, a residential distribution board (hereinafter simply referred to as a distribution board) according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective explanatory view showing an appearance of a distribution board 1 according to the present embodiment, and FIG. 2 is a perspective explanatory view showing a state where a front door 3 of the distribution board 1 is in an open position. . FIG. 3 is a longitudinal sectional view of the distribution board 1.
The distribution board 1 includes a box-shaped base 2 having an opening on the front surface, a cover frame 7 attached to the base 2 so as to cover the front opening, and a front door 3 attached to the front surface of the cover frame 7. In the base 2, one main breaker (circuit breaker) 4 and a plurality of branch breakers 5, 5... Are installed. The cover frame 7 has a plurality of windows 6, 6,. Then, the operation handle (locking release means) 4a of the main breaker 4 and the operation handle 5a of the branch breaker 5 protrude forward from the cover frame 7 through the windows 6, and each of the operation handles 5a from the front side of the cover frame 7 The operation handles 4a and 5a can be operated (hereinafter, the vicinity of the exposed portions of the operation handles 4a and 5a in the cover frame 7 is referred to as an operation unit). Furthermore, the upper part of the cover frame 7 is provided with a locking recess (locked portion) 8 in which a holding piece (locking portion) 11 of the front door 3 to be described later can be locked. In addition, when the front door 3 is opened as described later, the front door 3 is supported at a predetermined opening position where the operation portion is opened sufficiently wide (that is, the front door 3). Support member (not shown) is provided.

  The operation handle 4a of the main breaker 4 is provided so as to be rotatable between a standing position where the main handle breaker 4 stands with respect to the main body breaker 4 and a tilt position where the main handle breaker 4 tilts toward the main body breaker 4. When the ON position is detected and the occurrence of an abnormality such as overcurrent or electric leakage is detected, the operation handle 4a stands up and the circuit is cut off (that is, the standing position becomes the OFF position). The main breaker 4 is installed on the base 2 so that the turning direction of the operation handle 4a is up and down and the operation handle 4a is tilted upward when the operation handle 4a is turned on. Therefore, the operation handle 4a protrudes further forward than the ON position by turning the operation handle 4a to the OFF side accompanying the trip operation.

  On the other hand, the front door 3 is attached to the front surface of the cover frame 7 so as to be slidable in the vertical direction, and the operation portion is exposed by sliding downward from a closed position where the operation portion of the cover frame 7 is covered and closed. Let me open. In addition, a holding piece 11 is provided on the upper portion of the front door 3 so as to protrude upwardly to be locked in the locking recess 8 of the cover frame 7 and hold the front door 3 in the closed position. Further, a pressing plate 12 is attached to the rear surface of the front door 3 and at a position in front of the operation handle 4a of the main breaker 4 when the front door 3 is positioned at the closed position. When the front door 3 is positioned at the closed position, the tip of the operation handle 4a at the ON position comes into contact with the pressing plate 12. Therefore, when the operation handle 4a is turned to the OFF side from this state, the front door 3 is pressed forward by the operation handle 4a, and the holding piece 11 and the locking recess 8 are unlocked by the pressing force. The door 3 slides downward to open the operation unit.

  In addition, a handle operating piece 13 is attached to a position on the rear surface of the front door 3 and above the pressing plate 12. The handle operating piece 13 includes a head portion 13a (shown in FIG. 5) pivotally attached to the front door 3, and a tongue portion 13b (shown in FIG. 5) provided integrally with the head portion 13a. The operation position obtained by extending the portion 13b in a substantially horizontal direction is set as an initial position so as to be rotatable only in the upward (counterclockwise direction when viewed from the front) direction from the operation position. (Not shown). When the front door 3 is slid in the vertical direction, the handle operating piece 13 comes into contact with the operation handle 4a in which the tongue portion 13b is in the OFF position, and operates the operation handle 4a as described later.

  Here, the operation of the distribution board 1 when the main breaker 4 detects the occurrence of an abnormality and performs a trip operation, and the return operation from the trip state to the normal state will be described with reference to FIGS. FIG. 4 is a partial cross-sectional explanatory view showing the operation of each part accompanying the trip operation of the main breaker 4, and FIGS. 5 and 6 are explanatory views showing the operation of the operation handle 4 a by the handle operating piece 13.

First, in a normal state where no occurrence of abnormality is detected, the operation handle 4a of the main breaker 4 is naturally in the ON position tilted upward, the front door 3 is located in the closed position, the holding piece 11 and the locking recess It is held at the closed position by being locked with 8 (FIG. 4A).
Here, when the occurrence of an abnormality such as overcurrent or electric leakage is detected, the main breaker 4 trips, and the operation handle 4a at the ON position rotates to the OFF side to interrupt the circuit. Since the operation handle 4a presses the pressing plate 12 by the rotation to the OFF side, the holding piece 11 and the locking recess 8 are unlocked by the pressing force, and the front door 3 loses its support and moves downward. Slide to open the operation unit (FIG. 4B). Further, when the front door 3 is slid downward, the tongue 13b of the handle operation piece 13 contacts the operation handle 4a. However, the handle operation piece 13 is rotated upward with the head 13a as an axis due to the contact. Then, the operation handle 4a is not operated (FIG. 5). When the front door 3 is manually opened in the normal state where the operation handle 4a is in the ON position, the handle operation piece 13 does not contact the operation handle 4a and naturally operates the operation handle 4a to the OFF side or the like. Do not do.

  Next, when returning from the trip state to the normal state, the open front door 3 may be slid upward until the holding piece 11 and the locking recess 8 are locked to close the operation portion. . At this time, as the front door 3 slides upward, as shown in FIG. 6, the tongue 13b of the handle operating piece 13 comes into contact with the operating handle 4a in the standing state from below. However, unlike when the front door 3 is opened, rotation of the tongue portion 13b in the lower direction is restricted. Therefore, the tongue portion 14b pushes the operation handle 4 upward (that is, rotates it to the ON side). Finally, the operation handle 4a is set to the ON position. Therefore, the main breaker 4 returns to the normal state only by closing the front door 3.

  According to the distribution board 1 having the above-described configuration, the front door 3 that slides downward is provided on the front surface of the cover frame 7, while the tilting position is set to the ON position and the standing position is set to the OFF position. The main breaker 4 provided with the handle 4a is pivoted from the ON position to the OFF side so that the operation handle 4a protrudes forward, and the tip of the operation handle 4a in the ON position is on the rear surface of the front door 3. The front door 3 is installed in the base 2 so as to abut, and the front handle 3 is pushed forward by the turning of the operation handle 4a to the OFF side accompanying the trip operation of the main breaker 4, and the front door 3 is pushed by the pressing force. The holding piece 11 held at the closed position and the locking recess 8 are unlocked. Therefore, with the trip operation of the main breaker 4, the front door 3 automatically slides downward, and the operation part of the cover frame 7 is opened. Therefore, it is not necessary for the operator to manually open the front door 3 at the time of a trip, and it is easy to use particularly when the main breaker 4 is in a dark place due to a trip. In addition, since the front door 3 is provided so as to open the operation part by sliding downward, even if it is installed at a high place near the ceiling, the operation part cannot be fully opened due to the ceiling being in the way. Problems such as troublesome operations do not occur.

Further, according to the distribution board 1, the handle operating piece 13 that comes in contact with the operation handle 4 a as the front door 3 slides is provided on the rear surface of the front door 3. The piece 13 is configured to turn on the operation handle 4a. Therefore, the main breaker 4 can be turned on only by sliding the front door 3 in the open position in the open position along with the trip to close it, and the usability in a dark place is very good.
Furthermore, the handle operating piece 13 is attached so as to be rotatable upward (counterclockwise as viewed from the front) from the operation position, with the operation position obtained by extending the tongue portion 13b in a substantially horizontal direction as an initial position. Therefore, when the front door 3 slides in the opening direction, if the load is applied to the operation handle 4a already in the OFF position from the upper side to the lower side (that is, to the OFF operation side), the front door 3 rotates upward. And the operating handle 4a is not operated. Therefore, it is possible to prevent a situation in which an excessive load is applied to the operation handle 4a that is already in the OFF position, and the main breaker 4 is damaged or broken.

  In addition, the structure which concerns on the distribution board of this invention is not limited to the aspect as described in the said embodiment at all, The structure of a front door, a cover frame, a base, and the circuit breaker installed in a base The configuration related to the number and the installation position can be appropriately changed as necessary without departing from the gist of the present invention.

  For example, the configuration for holding the front door in the closed position is not limited to the locking between the holding piece and the locking recess, but the front door is provided with a recess while the cover frame is energized. Provided with a solenoid (locking release means) with a protruding body (locking part) protruding into the recess of the front door, and in the normal state where the main breaker is energized, the solenoid closes the front door It is also possible to adopt a configuration in which the solenoid is protruded (withdrawn from the inside of the recess) and the front door slides in the opening direction when held in position and when a power failure occurs due to a trip. In adopting this configuration, it is preferable to provide an operation member for turning on / off the solenoid separately outside the base or the cover frame.

Further, in the above embodiment, the front door is automatically opened in accordance with the trip operation of the main breaker, or the operation handle of the main breaker is turned on when the front door is closed. The front door may be automatically opened by a trip operation of the breaker (circuit breaker), or it is naturally possible to configure the operation handle of the branch breaker to be ON when the front door is closed.
Further, in the above embodiment, the operation unit is opened by sliding the front door downward, but by providing a biasing means for biasing the front door in the opening direction, the slide in the horizontal direction is performed. It is also possible to open the front opening, and it is also possible to open the front opening by sliding upward. In addition, if it is the structure as described in the said embodiment, it is not necessary to provide a biasing means etc., and rationalization of a structure can be aimed at.
In addition, it is possible to appropriately change which of the front door and the cover frame is provided with the locking portion and which is provided with the locked portion, and the front door is configured to be attached to the base instead of the cover frame. (In this case, needless to say, a locking portion or a locked portion may be provided on the base).

It is perspective explanatory drawing which showed the external appearance of the electricity distribution panel which concerns on this invention. It is the isometric view explanatory view which showed the state which has the front door of a distribution board in an open position. It is vertical section explanatory drawing of a distribution board. It is a fragmentary sectional view showing operation of each part accompanying trip operation of a main breaker. It is explanatory drawing which showed operation of the operation handle by a handle operation piece. It is explanatory drawing which showed operation of the operation handle by a handle operation piece. It is explanatory drawing which showed the conventional electricity distribution panel.

Explanation of symbols

  1 .... Distribution board 2 .... Base 3 .... Front door 4 .... Master breaker 4a ... Operation handle 5 ... Branch breaker 5a ... Operation handle 7 ... Cover frame 8 .. Locking recess, 11 .. Holding piece, 12 ..Pressing plate, 13 .. Handle operation piece, 13 a... Head, 13 b.

Claims (3)

A circuit breaker can be installed inside and has a base having an opening on the front surface, and a window that exposes an operation handle rotatably provided on the circuit breaker to turn the circuit on and off. Residential power distribution comprising: a cover frame attached to cover the front surface of the base; and a front door attached to the base or cover frame so as to cover / expose the operation means exposed through the window A board,
The front door is slidable between a closed position covering the operation handle and an open position exposing the operation handle, and the sliding direction is parallel to the rotation direction of the operation handle, and the opening is further performed. And provided so that the direction from the position to the closed position is the turning direction to the ON side of the operation handle,
A handle operation member is provided on the rear surface of the front door for contacting the operation handle in the OFF position with the slide operation of the front door to the closed position, and for turning on the operation handle. Residential distribution board. The handle operation member is composed of a shaft attachment portion that is attached to the rear surface of the front door and a tongue portion that contacts the operation handle, and further, a load applied to the tongue portion when the operation handle is operated to the ON side. Providing a restricting means for restricting rotation of the tongue in the direction;
When the handle operating member and the operation handle come into contact with the opening operation of the front door, the handle operating member rotates and retracts due to a load accompanying the contact with the operation handle, while the front door is closed. The residential distribution board according to claim 1, wherein the operation handle is operated to the ON side when contact is made during operation. While the front door is slidable in the vertical direction and provided to expose the operation handle by sliding downward from the closed position,
One of the locking part or the locked part is provided on the mounting target of the front door, and the other is provided on the front door, and the front door is brought into the closed position by locking the locking part and the locked part. 3. An unlocking means for releasing the latching between the latching part and the latched part in response to a trip operation of the circuit breaker is provided. The residential distribution board described.

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