JP2008022684A - Box for housing electrical apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a box for housing an electrical apparatus which can limit the turning of a door toward the opening side, without having to install a different member. <P>SOLUTION: A shaft 41 for single-openably supporting a front door 2 is formed into a column having a cross section cut into a semicircle, and a hinge hole 31, allowing the shaft 41 to insert therethrough is formed into a sector having an obtuse center angle by protruding a protrusion piece 31a in a circular hole, thereby preventing the front door 2 from moving in the direction of turning. Accordingly, the center angle of the hinge hole 31 is set as required, according to the pivoted position of the front door and the installation environment of a watt-hour meter housing case 1, and can prevent the situation where the contact of the front door 2 on a wall causes damages to the front door 2 itself or the wall, in installing the front door 2 to the wall. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a box for storing electrical equipment such as a distribution board and a watt hour meter storage case.

  2. Description of the Related Art Various types of electrical equipment storage boxes having doors that can be opened in one piece have been devised. For example, as described in Patent Document 1, a box having an opening on the front surface. There is one in which a door body is pivotally attached to one side edge of the main body so as to open and close the front opening.

Japanese Patent Laid-Open No. 10-205199

  However, in the electric device storage box as described in Patent Document 1, the door is freely rotatable without restricting the opening angle thereof, so that the front of the door when the door is opened. There is a problem that the door body and the wall surface may be damaged. In addition, in order to prevent such a situation, if a stopper member is separately provided so that the door body does not rotate more than a predetermined angle to the open side, the number of parts increases and the assembly work becomes complicated. The device housing box is also required to have an aesthetic appearance, and there is a problem that the aesthetic appearance is impaired by the stopper member or the like.

  Therefore, the present invention has been made in view of the above problems, and intends to provide an electric equipment storage box that can restrict the rotation of the door to the open side without providing a separate member. It is.

In order to achieve the above object, the invention according to claim 1 of the present invention is an electric equipment storage box comprising a door for opening and closing an opening provided in a case main body so that the door can be opened. In addition, a protrusion is provided on one of a cylindrical shaft that supports the door so that it can be opened in one direction and a hinge hole through which the shaft is inserted, and the protrusion can be inserted into the other of the shaft and the hinge hole. And the opening angle of the said door body was restrict | limited by providing the notch which restrict | limits the movement to the rotation direction of the said protrusion within a predetermined width, It is characterized by the above-mentioned.
The invention according to claim 2 is the invention according to claim 1, wherein the case body has a projecting shaft on the door body while the shaft cut out so as to have a semicircular cross section is provided. A hinge hole is provided.

According to the present invention, the projection is provided on one of the columnar shaft that supports the door so that it can be opened in one side and the hinge hole through which the shaft is inserted, and the projection is inserted into the other of the shaft and the hinge hole. The opening angle of the door body is limited by providing a notch that can move the protrusion in the rotation direction within a predetermined width. Therefore, by appropriately setting the rotation direction width of the notch according to the pivot position of the door body and the installation environment of the electrical equipment storage box, the notch serves as a stopper and the door body is installed on the wall surface. It is possible to prevent a situation in which the door body itself or the wall surface is damaged due to contact with the wall surface at times.
In addition, since a separate stopper member for restricting the pivoting movement of the door body is not installed or used, there is no problem such as an increase in the number of parts or loss of the stopper member. It is not necessary to provide an installation space or the like for installing the electric device, and it is possible to provide an electric equipment storage box that has few irregularities and is excellent in aesthetics.
Further, according to the invention described in claim 2, since the case body is provided with a semi-cylindrical shaft and the door body is provided with the hinge hole having the protrusion, the shaft and the hinge hole can be formed. There is an effect that it is easy to attach the door body to the case body.

  Hereinafter, an electric equipment storage box that is an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, the electric device storage box will be described as a watt-hour storage case as an example.

FIG. 1 is a perspective explanatory view showing the external appearance of the watt-hour storage case 1, and FIG. 2 is a perspective explanatory view showing the watt-hour storage case 1 in a state where the front door 2 is opened. 3 is a perspective explanatory view showing the watt-hour storage case 1 in the disassembled state from the upper left front, and FIG. 4 is a perspective view showing the watt-hour storage case 1 in the disassembled state from the lower left front. FIG. Further, FIG. 5 is an explanatory view showing the cover member 4 from the rear and showing the state of attachment of the cover member 4 to the substrate 5.
The watt hour meter storage case 1 is a stainless steel case body 3 in which a watt hour meter or the like (not shown) can be stored, and covers a front door (door) that covers the front and right sides of the case body 3. Body) 2. The front door 2 is formed in an L-shape comprising a covering portion 2a that covers the front surface of the case body 3 and a bent portion 2b that is integrally bent backward from the covering portion 2a and covers the right side surface of the case body 3. It is a thin plate member and is formed slightly longer in the vertical direction than the length of the case body 3 in the vertical direction. A hinge plate 32 having a hinge hole 31 as will be described later is integrally projected on the rear end upper portion of the bent portion 2b of the front door 2, while the rear end lower portion of the bent portion 2b of the front door 2 is A hinge plate 34 having a circular shaft hole 33 is integrally projected.

A long hole 35 that is long in the vertical direction is formed in the lower left end of the covering portion 2a of the front door 2, and the front door 2 is locked in a closed state on the rear side of the long hole 35. A locking mechanism 36 is provided. The lock mechanism 36 includes a latch piece 37 that latches on a lock pin 43 provided on the case body 3 side, and inserts a finger or the like through the long hole 35 to grip the lower left end of the front door 2. As a result, the lock mechanism 36 is pushed rearward and rotates together with the latching piece 37. The lock mechanism 36 has a biasing means built in, and is always biased to the normal position when not pressed.
In the front door 2 as described above, the shaft 41 protruding from the rear end of the upper right side edge of the case body 3 is inserted into the hinge hole 31 of the hinge plate 32, and the hinge pin 40 is connected to the hinge plate 34. By inserting from below into the shaft hole 33 and a small hole 42 formed at the rear end of the lower right side edge of the case main body 3, the case main body 3 is attached to be freely openable with the right rear end edge of the case main body 3 as an axis. In the front door 2, the hinge plates 32 and 34 are provided inward from the upper end and the lower end of the bent portion 2 b, and the upper and lower hinge portions are in contact with the upper and lower surfaces of the case body 3. It is made difficult to see from the front etc., and the aesthetics of the electricity meter storage case 1 are improved.

On the other hand, the case body 3 includes a substrate 5 on which an watt hour meter and the like are installed, and a cover member 4 attached to the front side so as to cover the watt hour meter and the like installed on the substrate 5.
The cover member 4 is a box-shaped member having an opening on the rear surface, and a window 8 is provided on the front surface so that a watt hour meter or the like housed and installed therein can be visually recognized. Further, a step portion 6 is provided at a position corresponding to the long hole 35 of the front door 2 at the left end portion of the front surface of the cover member 4, and a lock pin 43 protrudes from the step portion 6. When the front door 2 is closed, the latching piece 37 is latched on the lock pin 43 to lock the front door 2. Further, a hook-like locking piece 20 that protrudes rearward is integrally provided at the rear end edge of the lower surface of the front door 2. The locking piece 20 can be bent in the vertical direction due to the characteristics of stainless steel and the notch provided on the lower surface. The locking piece 20 is connected to the locking portion 21 provided on the substrate 5 using the elasticity. Engagement is possible. In addition, a plastic plate made of synthetic resin is attached to the window 8 so as to prevent intrusion of water, foreign matter, etc. into the inside, and prevent operation of internal devices by others.

  The board 5 is provided with an installation base, a flange, and the like for installing a watt hour meter and the like, and a cover member 4 attached to the front of the board 5 on the left, right, and upper edges of the front surface. A peripheral wall 22 is provided for positioning. Further, a shaft 41 that can be inserted into the hinge hole 31 of the hinge plate 32 projects from the right end portion of the upper surface of the substrate 5. Further, a small hole 42 into which the hinge pin 40 can be inserted is formed in the right end portion of the lower surface of the substrate 5. In addition, as shown in FIG. 5, a locking portion 21 that can be locked with the locking piece 20 of the cover member 4 is provided at the lower part of the front surface of the substrate 5. The cover member 4 can be attached by locking the locking piece 20 to the locking portion 21 with the rear opening edge of the cover member 4 in contact with the outer periphery of the peripheral wall 22.

Here, the configuration of the hinge portion between the front door 2 and the case body 3 (substrate 5), ie, the shaft 41 and the hinge hole 31 of the hinge plate 32, which is the main part of the present invention, will be described with reference to FIGS. explain. FIG. 6 is a partial explanatory view showing the shaft 41 and the hinge plate 32 in an enlarged manner, and FIG. 7 shows the hinge portion in the opened state (a) and the closed state (b) of the front door 2 in an enlarged manner. It is a partial explanatory view.
The shaft 41 is a columnar body that is cut out so as to have a semicircular cross section, and is erected with the flat surface that is the cutout surface facing outward. On the other hand, the hinge hole 31 has a fan shape having substantially the same diameter as that of the shaft 41 and a central angle of a predetermined obtuse angle (for example, 240 degrees), that is, a shape in which a projecting piece (projection) 31a is projected in the circular hole. Is formed. When the shaft 41 is inserted into the hinge hole 31, the notch surface of the shaft 41 restricts the movement of the protrusion 31a of the hinge hole 31 in the rotation direction, and the rotation of the hinge plate 32 is 60 degrees. Limited within range. Therefore, in the present embodiment, as shown in FIG. 7B, when the front door 2 is opened to the maximum, a part of the front door 2 does not come into contact with the wall surface located on the rear side of the substrate 5. That is, the central angle of the hinge hole 31 is set (the projecting piece 31a projects) so that the maximum opening angle is within 90 degrees.

The assembly of the electricity meter storage case 1 having the above configuration will be described.
First, after various devices including a watt hour meter or the like are installed on the substrate 5, the locking piece 20 is attached to the locking portion 21 with the rear opening edge of the cover member 4 being in contact with the outer periphery of the peripheral wall 22 of the substrate 5. The cover member 4 is attached to the substrate 5 by being locked. Next, the hinge hole 31 of the hinge plate 32 of the front door 2 is inserted into the shaft 41, and the hinge pin 40 is inserted into the shaft hole 33 and the small hole 42 from below, so that the front door 2 is opened to the case body 3. If it can be attached, the assembly of the electricity meter storage case 1 is completed. As for the opening and closing operation of the front door 2, if the front door 2 is pushed in the closing direction until the latching piece 37 is latched by the lock pin 43 in the step portion 6, the latching piece 37 is against the urging force. Is rotated from the normal position and is naturally hooked on the lock pin 43 to be in a closed state. If the user wants to open the door, insert a finger through the long hole 35 or the like and hold the left end of the front door 2 while pressing the lock mechanism 36 with the fingertip. The front door 2 can be opened by rotating together with the stop piece 37 to release the hooked state between the stop piece 37 and the lock pin 43.

  According to the watt-hour storage case 1 as described above, the semi-cylindrical shaft 41 protrudes from the case body 3 and the hinge plate 32 having the hinge hole 31 having the protrusion 31a formed in the front door 2 is provided. The front door 2 is attached to the case main body 3 by inserting the shaft 41 through the hinge hole 31. Therefore, the movement of the projecting piece 31a in the turning direction by the opening operation of the front door 2 is restricted by the shaft 41, and the opening of the front door 2 beyond a predetermined opening angle is restricted. Therefore, in the electricity meter storage case 1 of the present embodiment, the front door 2 contacts the wall surface when the wall surface of the energy meter storage case 1 is installed by making the central angle of the hinge hole 31 smaller than 270 degrees. And the situation where the front door 2 and a wall surface will be damaged can be prevented.

In addition, since a separate stopper member that restricts the rotation of the front door 2 is not installed and used, problems such as an increase in the number of parts and loss of the stopper member do not occur, and the stopper member is not attached to the front door 2 or the case body 3. It is not necessary to provide an installation space or the like for installing the wattmeter, and it is possible to provide a watt-hour storage case 1 that is excellent in aesthetics with few irregularities.
Furthermore, since the front door 2 that covers the front surface of the case body 3 is provided, the front door 2 is closed, so that the visibility of the meter of the watt hour meter from the window 8 can be blocked. That is, in order to visually recognize the meter, an operation of opening the front door 2 is required as compared with the conventional case. Therefore, conventionally, there has been a problem that the presence or absence of home is determined by the movement of the meter. However, according to the watt-hour storage case 1 according to this embodiment, the operation of opening the front door 2 must be performed. In other words, since the movement of the meter or the like cannot be visually recognized, cases where the above-described problem occurs can be reduced, and as a result, crime prevention can be improved.

Furthermore, the case main body 3 can be assembled by the engagement between the locking piece 20 provided on the cover member 4 and the locking portion 21 provided on the substrate 5, and the case main body 3 can be easily assembled. it can. Furthermore, the cover member 4 is made of stainless steel, and a cut is provided on the lower surface of the cover member 4 to form the locking piece 20, thereby giving the locking piece 20 elasticity in the vertical direction. Therefore, the locking piece 20 and the locking portion 21 can be reliably locked, and the cover member 4 can be attached to the substrate 5 without using a separate mounting member. Effects such as improvement in workability can be achieved.
In addition, a peripheral wall 22 is provided along the outer periphery of the substrate 5, and the cover member 4 is attached to the substrate 5 with the rear surface opening edge in contact with the outer periphery of the peripheral wall 22. Therefore, it is possible to easily position the cover member 4 on the front surface of the substrate 5, to facilitate attachment work, and to prevent the cover member 4 from rattling or the like when attached to the substrate 5. It has a configuration.

  The configuration related to the electronic device storage box of the present invention is not limited to the mode described in the above embodiment, and the configuration related to the case main body, the door, the cover member, and the substrate is The present invention can be changed as necessary without departing from the spirit of the invention.

For example, in the electrical equipment storage box described in the above embodiment, the door body is configured to be pivotally attached to the side surface rear edge of the case body, but there is no problem even if it is axially attached to the front side edge of the case body. Needless to say, the central angle of the hinge hole, that is, the width in the direction of rotation of the protrusion can be appropriately changed and designed depending on the door shaft mounting position and the installation environment of the electrical equipment storage box. The shape of the hinge plate can be changed as appropriate, for example, by forming the portion to be formed into a cylindrical shape.
Moreover, in the said embodiment, while it has the structure which provided the notch which accept | permits rotation of a protrusion on the axis | shaft while providing a protrusion in a hinge hole, as shown in FIG. While providing the protrusion 41'a, the hinge hole 31 'is provided with a notch 31'a that fits the protrusion of the shaft 41' and restricts the movement of the protrusion in the rotational direction. Is also possible.

In addition, a shaft and a hinge plate having a hinge hole may be provided at the upper and lower portions of the case body, respectively, and the shaft can be moved in and out by an urging means such as a spring. That is, a door body may be attached to the case body. Furthermore, there is no problem even if a shaft is provided in the door body and a hinge hole is provided in the case body.
In addition, in the above embodiment, the electric device storage box is described as a watt hour storage case, but it is naturally possible to use another electric device storage box such as a distribution board, It is also possible to apply the structure of the hinge part described in the above embodiment to a side door that opens and closes the side of the box, a partial door that opens and closes a part of the main body, and the like.

It is perspective explanatory drawing which showed the external appearance of the watt-hour storage case. It is the strabismus explanatory view which showed the watt-hour storage case in the state where the front door is opened. It is the isometric view explanatory view which showed the watt-hour storage case in a decomposition | disassembly state from the upper left front. It is the perspective explanatory view which showed the watt-hour storage case in a decomposition | disassembly state from the lower left front. It is explanatory drawing shown about the attachment state to the board | substrate of a cover member while showing a cover member from back. It is the partial explanatory view which expanded and showed the axis and the hinge board. It is the partial explanatory view which expanded and showed the hinge part in the open state (a) and closed state (b) of a front door. It is explanatory drawing which showed the example of a change of an axis | shaft and a hinge board.

Explanation of symbols

  1. ・ Energy meter storage case, 2. ・ Front door, 2a ・ ・ Coating part, 2b ・ ・ Folding part, 3 ・ ・ Case body, 4 ・ ・ Cover member, 5 ・ ・ Board, 6 ・ ・ Step part, 8 .. Window 20.. Locking piece 21.. Locking part 22.. Peripheral wall 31, 31 ′ · Hinge hole 31 a, 41 ′ a. .., 32, 34 .. Hinge plate, 33 .. Shaft hole, 35 .. Long hole, 36. Lock mechanism, 37 .. Latch piece, 40 .. Hinge pin, 41 .. Shaft, 42. ..Lock pin.

Claims (2)

A box for electrical equipment storage comprising a door for opening and closing an opening provided in the case body, so that the door can be opened on one side,
A projection is provided on one of a cylindrical shaft that supports the door so that it can be opened in one direction and a hinge hole through which the shaft is inserted, and the projection can be fitted into the other of the shaft and the hinge hole, and A box for storing electric equipment, wherein a notch for restricting movement of the protrusion in the rotation direction within a predetermined width is provided to restrict an opening angle of the door body.   2. The electricity according to claim 1, wherein the case body is provided with a shaft cut out so as to have a semicircular cross section, and the door body is provided with a hinge hole having a protrusion. Equipment storage box.

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