JP2020010519A - Switchboard housing - Google Patents

Abstract

To provide a switchboard housing that does not require a separate member to be assembled to a hinge unit even with a door plate that can be opened upward and held in an open state.SOLUTION: A door plate 4 for closing an opening 31 provided in a front plate 3 is included. An upper part of the front plate 3 is hinged so that the door plate 4 can be opened and closed. On an upper end of the door plate 4, a rotary shaft 5 for hingedly attaching to the front plate 3 is integrally formed. The front plate 3 is integrally provided with a shaft fixing unit 6 having a shaft hole 6b for fixing the rotary shaft 5. Further, A locking tongue piece 4a that locks to the front plate 3 to maintain the open state when the door plate 4 is opened to a specific angle on an upper side of the door plate 4 is provided.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a distribution board housing for housing a breaker and the like, and more particularly to a distribution board housing having a door plate on the front surface.

  In many cases, a distribution board housing for accommodating a large number of breakers such as a main breaker and a branch breaker has an operation handle exposed from the housing so that the breaker can be easily operated. Such a distribution board housing needs to be closed so that dust and the like do not adhere to the live parts and electric wires arranged around the breaker, so that an opening for exposing only the operation handle is required. The part is provided on the front surface of the housing.

  Therefore, such a distribution board with the operation handle exposed on the front side has a door plate further provided on the front face of the distribution board in order to close the entire opening including the operation handle in consideration of appearance. Is widespread. At this time, the door plate is configured to open upward so as not to obstruct the door plate when operating the distribution board installed above the wall surface (for example, refer to Patent Document 1), and further open operation is performed. In such a case, a lock mechanism is provided so that the open state is maintained, and the switchboard is configured to be easily operated (for example, see Patent Document 2).

JP 2010-11559 A JP-A-9-271112

  In the structure in which the lock mechanism is provided on the hinge, the door does not lower even if the user releases his / her hand with the door open, so that inspection work or the like is easy. However, such a hinge has a costly structure because members made of metal such as a shaft and a cam member are assembled to the door and the housing.

  In view of such a problem, the present invention provides a distribution board housing that does not require a separate member to be assembled to a hinge even if a door plate that can be opened upward and held in an open state is provided. It is intended to be.

In order to solve the above-mentioned problem, the invention according to claim 1 has a door plate that has a door plate that closes an opening provided on a front surface of a housing, and the door plate is hinged on an upper part of the housing so that the door plate can be opened and closed. A panel housing in which a rotating shaft for hingedly attaching to the housing is integrally formed at an upper end of the door plate, while a housing is integrally formed with a shaft stopper having a shaft hole for locking the rotating shaft. The door plate is further provided with locking means for locking to the housing and keeping the door open when the door plate is opened to a specific angle.
According to this configuration, since the member for hingedly attaching the door plate to the housing is formed integrally with the door plate and the housing, a member for separately forming a hinge is not required, and the structure can be made at low cost. Then, since the door plate in the open state is held in that state, there is no need to separately attach a holding means.

According to a second aspect of the present invention, in the configuration according to the first aspect, the locking means is a locking tongue protruding from an upper side of the door plate, and the locking portion formed on the housing to be locked is provided. The locking groove has an inclined surface that allows the locking tongue to slide toward the inside of the housing from a portion where the locking tongue is locked, and is locked in the locking groove. When the closed door plate receives a closing operation, the locking is released and the locking tongue slides on the inclined surface to perform the closing operation.
According to this configuration, when the door plate that is held in the open state is closed, the locking of the locking tongue is released and the closing operation is performed. Since the locking is released, the locking tongue does not break.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the housing includes a box-shaped housing main body having an open front surface, and a front plate having an opening and closing the open front surface. And the shaft stopper is formed on the rear surface of the front plate.
According to this configuration, even though the shaft stopper is formed integrally with the front plate, it is formed on the back of the front plate.

  According to the present invention, the member for hingedly attaching the door plate to the housing is formed integrally with each of the door plate and the housing, so that a member for separately forming a hinge is not required, and the structure can be made inexpensively. Then, since the door plate in the open state is held in that state, there is no need to separately attach a holding means.

It is a perspective view showing an example of the distribution board housing concerning the present invention, (a) has shown the state where the door plate was closed, and (b) has shown the state where the door plate was opened. It is a front view of the front board in the state which opened the door board. FIG. 3 is a cross-sectional view taken along line AA of FIG. 2, where (a) shows a main part and (b) shows an enlarged view of a C part. It is the sectional view on the AA line in the state where the door board was closed, (a) is a principal part, (b) is the D section enlarged drawing. It is a perspective explanatory view which separated a door plate and a front plate, (a) is a front plate, (b) is a door plate. It is the E section enlarged view of FIG. FIG. 6 is an enlarged view of a portion F in FIG. 5 and is a perspective view as viewed from the back. It is a rear view of F part which accommodated the rotating shaft. It is a rear view of the F part which mounted the accommodated rotating shaft. FIG. 3 is a cross-sectional view taken along the line BB of FIG. 2, (a) showing a main part, and (b) showing an enlarged view of a G part. It is the BB line sectional view in the state where the door board was closed, (a) has shown the principal section and (b) has shown the H section sectional view. It is BB sectional drawing which shows the state in the middle of closing a door board, (a) is a principal part, (b) is an I section enlarged view.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1A and 1B are perspective views showing an example of a distribution board housing according to the present invention, wherein FIG. 1A shows a state in which a door plate is closed, and FIG. 1B shows a state in which the door plate is opened. FIG. 2 is a front view of the distribution board housing with the door plate opened.
A distribution board housing (hereinafter, simply referred to as a “housing”) 1 has a box-shaped housing body 2 having a back surface and a peripheral side surface and an open front surface, and a housing body arranged on the front surface of the housing body 2. And a front plate 3 for closing an open front surface of the vehicle, and a front plate 3 is provided with a door plate 4 whose upper end is hinged and which can be opened and closed.

A distribution board device such as a breaker is assembled to the housing main body 2, and a knockout 21 is provided on a top surface or the like that forms a part of a side surface, and a hole through which an electric wire connected to a breaker or the like housed therein can be formed can be formed. And
At two locations on the upper and lower sides of the front plate 3, concave areas 32 are formed as one paragraph, and an opening 31 for exposing an operating handle (not shown) of the breaker housed in the housing body 2 is formed therein. ing. The concave area 32 forms an accommodation space for the operation handle exposed from the opening 31, and the door plate 4 is provided so as to close the entire concave area 32 including the opening 31 formed in two upper and lower stages. .

3 and 4 show cross sections taken along line AA of FIG. 3 shows the state of FIG. 2 with the door plate 4 opened, FIG. 3 (a) is a main part, and FIG. 3 (b) is an enlarged view of a part C. On the other hand, FIG. 4 shows a state in which the door plate 4 is closed. FIG. 4A is an enlarged view of a main part, and FIG.
5 to 9 are explanatory views of a connection structure of the front plate 3 and the door plate 4, that is, a hinge structure. FIG. 5 is an overall explanatory diagram in which the front plate 3 and the door plate 4 are separated, and FIG. FIG. 7 is an enlarged view of a portion E, FIG. 7 is a perspective view of the portion F as viewed from the back, FIG. 8 is a rear view of the portion F where the rotating shaft 5 is accommodated, and FIG. The rear view of the F part attached to the housing main body 2 is shown.

  As shown in FIG. 5, a rotating shaft 5 constituting one of the hinge portions is provided on the front plate 3 at two places on the left and right sides of the upper side of the door plate 4, and the upper side of the door plate 4 is locked near the center. A tongue piece 4a is provided in a belt shape. The front plate 3 has a pair of insertion openings 33 into which the rotating shaft 5 is inserted, and a locking hole 34 into which the locking tongue 4a is inserted at the center. As shown in FIG. 7, a shaft stopper 6 that forms the other of the hinges is formed on the back of the front plate 3.

Hereinafter, the hinge portion will be specifically described. As shown in FIG. 6, the rotation shaft 5 has a connection shaft 5 a at an end connected to the shaft stopper 6 of the front plate 3, and is integrally formed continuously with the connection shaft 5 a on the same axis. An extension shaft 5b for reinforcing the connection shaft 5a is provided.
The rotating shaft 5 is connected to the door plate 4 via a connecting member 7 as shown in FIG. 3 and 4, the connecting member 7 is formed to have a U-shaped outer shape upward from the rear surface of the door plate 4, and the rotating shaft 5 is provided at the back of the front plate 3. It is formed so that it can easily enter.

  The other shaft stop portion 6 is formed on the back surface of the front plate 3 and has a box-shaped housing portion 6a for housing the rotating shaft 5 as shown in FIG. A shaft hole 6b into which the shaft 5a is inserted to stop the shaft is provided. The insertion port 33 into which the rotating shaft 5 is inserted is provided directly below the shaft stopper 6 as shown in FIG. 7, and is inserted from the back of the insertion port 33 toward the shaft stopper 6. A guide path 8 for guiding the rotating shaft 5 is formed.

The guide path 8 is formed in an arc shape as shown in FIG. 7, and is formed so as to guide the inserted rotary shaft 5 to the upper stopper 6. Since the connecting member 7 is formed in a U-shape, the rotating shaft 5 inserted into the insertion opening 33 can be smoothly moved to the shaft stopper 6 by being guided by the guide path 8.
Thus, the connecting shaft 5a of the rotating shaft 5 arranged in the housing portion 6a is arranged in the vicinity of the shaft hole 6b, as shown in FIG.

10 to 12 are explanatory views of the locking structure for holding the angle of the door plate 4 in the open state, and the locking structure will be specifically described with reference to FIGS. 10A and 10B are cross-sectional views taken along the line BB of FIG. 2, wherein FIG. 10A is a main part, and FIG. FIGS. 11A and 11B are cross-sectional views taken along the line BB when the door plate 4 is closed. FIG. 11A is a main part, and FIG. FIGS. 12A and 12B are cross-sectional views taken along the line BB showing a state in which the door plate 4 is being closed. FIG.
The locking tongue piece 4a formed on the upper side of the door plate 4 has a base formed toward the rear of the door plate 4 as shown in the cross section in FIGS. It is formed to face. In addition, M shown in FIGS. 10 to 12 indicates the center of rotation of the door plate 4 (the position of the rotating shaft 5).

  On the other hand, the locking hole 34 formed in the front plate 3 is formed in a slit shape, and a locking groove 9 for locking the tip of the locking tongue 4a is formed on the lower side of the locking hole 34. The locking groove 9 is formed in the entire left and right direction of the locking hole 34, and the back side of the locking groove 9 locks in the interior direction of the housing when the door plate 4 is closed, that is, turned downward. An inclined surface 9a is provided so that the tongue piece 4a slides and moves. An accommodation space for accommodating the engagement tongue piece 4a is provided inside the engagement hole 34.

  The mounting of the door plate 4 formed as described above to the front plate 3 and the opening and closing operations are performed as follows. Attachment of the door plate 4 is performed by first putting the door plate 4 substantially horizontal, aligning the rotating shaft 5 with the insertion opening 33, and simultaneously aligning the locking tongue piece 4a with the locking hole 34, and pushing it obliquely upward. As shown in FIG. 3, the rotating shaft 5 is disposed on the shaft stopper 6, and at the same time, the locking tongue 4a is inserted into the locking hole 34 as shown in FIG.

  After the insertion, the door plate 4 is turned down and closed, and the rotating shaft 5 is arranged near the shaft hole 6b of the shaft stopper 6 as shown in FIG. 8, and the door plate 4 is slid to the right in this state. Then, as shown in FIG. 9, the connecting shaft 5a enters the shaft hole 6b and is axially attached to form a hinged portion. That is, the door plate 4 is attached. Since FIGS. 8 and 9 are rear views of the front plate 3, the door plate 4 slides to the left.

  When the connected door plate 4 is rotated upward to open and is further rotated upward from a horizontal state, the tip of the locking tongue piece 4a moves forward, and as shown in FIG. The locking tongue 4a is locked in the locking groove 9. This locked state is not released by the weight of the door plate 4, and the open angle is maintained. Then, when the door plate 4 is pressed down, the locked state is released, and the door plate 4 rotates and closes.

As described above, since the member for hingedly attaching the door plate 4 to the housing 1 is formed integrally with each of the door plate 4 and the housing 1, a member for separately forming a hinge is not required, and the configuration can be made at a low cost. Then, since the door plate 4 in the open state is held in that state, there is no need to separately attach holding means.
Further, if the door plate 4 which is kept open is closed, the locking tongue piece 4a is unlocked by the locking groove 9 and the door is closed, so that there is no need to perform a separate unlocking operation. Since the lock is released by sliding, the lock tongue 4a is not damaged.
Further, even though the shaft stopper 6 is formed integrally with the front plate 3, it is formed on the back of the front plate 3.

In the above embodiment, the locking tongue piece 4a is formed in a band shape at the center of the upper part of the door plate 4, but a plurality of locking tongue pieces may be formed in the vicinity of the left and right rotating shafts 5.
Further, the housing 1 is composed of a box-shaped housing main body 2 having an open front and a front plate 3 for closing the open front, and a part for assembling the equipment is formed in a box shape. The member to be assembled may be formed in a plate shape, and the member to be disposed on the front side and to which the door plate 4 is attached may be formed in a box shape.

  Although the above-described embodiment mainly describes a distribution board that houses a breaker for forming a branch circuit, the present invention is also applicable to an information distribution board that houses information equipment.

  1, housing, housing body, 3 front plate, 4 door plate, 4a locking tongue (locking means), 5 rotating shaft, 5a connecting shaft, 5c · Projection, 6 · · · shaft stop, 6a · · · housing, 6b · · · shaft hole, 7 · · · connecting member, 9 · · · locking groove (locking portion), 9a · · · inclined surface, 31 · · · opening Part, 33 ... insertion port, 34 ... locking hole.

Claims (3)

A power distribution board housing including a door plate that closes an opening provided on a front surface of the housing, wherein the door plate is openably and closably hinged on an upper portion of the housing,
At the upper end of the door plate, a rotation shaft for hingedly attaching to the housing is integrally formed, while the housing is integrally provided with a shaft fixing portion having a shaft hole for fixing the rotation shaft. And
Furthermore, the door plate is provided with locking means for locking to the housing and maintaining the open state when the door plate is opened to a specific angle. The locking means is a locking tongue protruding from an upper side of the door plate, and a locking portion formed on the housing to be locked is a locking groove,
The locking groove has an inclined surface that allows the locking tongue to slide toward the inside of the housing from a portion that locks the locking tongue,
When the door plate locked in the locking groove receives a closing operation, the locking is released and the locking tongue slides on the inclined surface to perform a closing operation. 1. The distribution board housing according to 1. The housing has a box-shaped housing body with an open front, and a front plate that has the opening and closes the open front,
The distribution board housing according to claim 1, wherein the shaft stopper is formed on a back surface of the front plate.

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