JP6400439B2 - Electrical equipment storage box - Google Patents

Description

  The present invention relates to an electric equipment storage box.

  An electric device such as a breaker, a measuring device, or a communication device provided in a housing of the electric device storage box has a structure that is plug-in connected to a conductive bar. For example, as shown in Patent Document 1, such an electric device is usually attached by sliding on a base metal fitting that is a device attachment member made of a metal plate.

  However, the housing size is increased due to the space for screwing the base metal fitting to the housing and the space for the height of the base metal fitting. As a result, there is a problem that it is difficult to secure an installation space when the electrical equipment storage box is additionally installed outside or inside a panel such as an existing switchboard or control panel.

JP 2006-166565 A

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described conventional problems, and to provide an electric device storage box that can store an electric device having a plug-in connection structure therein and that can be downsized. .

The present invention, which has been made to solve the above-described problems, is a method for processing the bottom surface of the housing itself in an electrical equipment storage box including a conductive bar and an electrical equipment plug-in connected to the conductive bar. And the apparatus attachment part for sliding and attaching the said electric equipment is formed, It is characterized by the above-mentioned.

  According to a second aspect of the present invention, in the electric device storage box according to the first aspect, the device mounting portion includes an engaging portion that engages with the electric device, and the thickness of the bottom surface of the housing is determined by the engagement. It is characterized by being formed thicker than the thickness of the joint.

  According to a third aspect of the present invention, in the electric equipment storage box according to the first or second aspect, legs are formed on the bottom surface.

  According to a fourth aspect of the present invention, in the electric device storage box according to the third aspect, the device mounting portion is provided on one side of the housing, and the terminal portion is provided on the other side. .

  According to a fifth aspect of the present invention, in the electrical equipment storage box according to the third or fourth aspect, the conductive bar has an approximately L-shape having an angle of approximately 90 ° when projected onto a plane parallel to the bottom surface of the casing. It has a shape, and has a power line connecting portion connected to the power line at one end thereof.

  According to a sixth aspect of the present invention, in the electric equipment storage box according to the fifth aspect, the conductive bar is disposed along the wall surface in the casing.

  According to a seventh aspect of the present invention, in the electric equipment storage box according to the fifth aspect, the conductive bars into which the poles of the electric equipment are inserted have the same shape.

  According to an eighth aspect of the present invention, in the electric device storage box according to the fifth aspect, the device mounting portion is provided with a fixing portion for restricting the position of the electric device at a plug-in connection position with the conductive bar. It is characterized by that.

In the electrical equipment storage box according to the present invention, the bottom surface of the casing itself is processed to form an equipment mounting portion for sliding and mounting the electrical equipment. This eliminates the need for a conventional device mounting member, and allows the electrical device to be plug-in connected in a space-saving manner, thereby reducing the size of the housing.

  According to a second aspect of the present invention, the device mounting portion includes an engaging portion that engages with the electric device, and the casing is formed such that the thickness of the bottom surface of the casing is larger than the thickness of the engaging portion. The strength of the bottom of the body can be increased.

  Even if the device mounting portion is formed so as to penetrate the bottom surface of the housing by forming the leg portion on the bottom surface as in the invention described in claim 3, the electric device inserted through the device mounting portion is a wall or the like. Therefore, the electric device can be slid smoothly.

  As in the fourth aspect of the invention, the dead space can be reduced by providing the device mounting portion on one side in the housing and the terminal portion on the other side.

  According to the fifth aspect of the present invention, the conductive bar has a substantially L-shape having an angle of approximately 90 ° on the projection onto the plane parallel to the bottom surface of the housing, and a power source connected to the power line at one end thereof. If it has a line connection part, while saving space by stacking and arranging conductive bars in the front-rear direction, screws can be easily fixed at the terminal part of each power line connection part.

  If the conductive bar is disposed along the wall surface in the casing as in the invention described in claim 6, the conductive bar and the wall surface are disposed close to each other, and the casing is formed without generating an excessive space between the conductive bar and the wall surface. The inside can be used effectively.

  As in the seventh aspect of the present invention, the conductive bars into which the poles of the electrical equipment are inserted have the same shape. Thereby, manufacturing cost can be held down.

  As in the invention described in claim 8, the device mounting portion is provided with a fixing portion for restricting the position of the electric device at the plug-in connection position with the conductive bar, thereby preventing the electric device from coming off in the sliding direction. it can.

It is a perspective view of this embodiment. It is the perspective view which abbreviate | omitted the electric equipment of FIG. FIG. 3 is a front view of FIG. 2. It is sectional drawing of this embodiment. It is a bottom view of an electric device. It is sectional drawing which shows the other shape of an electroconductive bar. It is the front view which has arrange | positioned the inside of an electric equipment storage box in the right and left direction.

  In the present specification, the front-rear direction, the up-down direction, and the left-right direction refer to the directions shown in FIG. Specifically, a preferred embodiment of the present invention will be described below in which the front-rear direction is the height direction of the electric device 2, the vertical direction is the longitudinal direction of the electric device 2, and the left-right direction is the short direction of the electric device 2. As shown in FIG. 1, an electrical device 2 such as a breaker, a lightning arrester, a communication device, and a measuring device is housed in the housing 1. The electric device 2 is plug-in connected to the conductive bar 3 provided on the power supply side. In addition, when the electrical equipment storage box shown in the present embodiment is additionally mounted outside or inside the existing switchboard or control panel, it can be easily mounted by screwing the casing 1. is there.

  As shown in FIG. 2, a device mounting portion for sliding the omitted electrical device 2 upward on the bottom surface of the housing 1 itself, specifically, the inside of the surface facing the wall or the like on which the housing 1 is installed. 4 was formed by molding. As shown in FIG. 3, the device mounting portion 4 is fixed to restrict the position of the electrical device 2 at a plug-in connection position with the guide portion 5 that guides the omitted electrical device 2 in the sliding direction and the conductive bar 3. Part 8. Further, the guide portion 5 is formed in a substantially rectangular shape through which a guide portion 9 described later can be inserted, and the enlarged hole portion 6 communicates with the enlarged hole portion 6 and is formed narrower than the enlarged hole portion 6. It consists of a narrow hole portion 7 which is an engaging portion that engages with the guide portion 9 to be engaged. Further, as shown in FIG. 4, the thickness of the bottom surface of the housing 1 is formed to be thicker than the thickness of the narrow hole portion 7. The guide portion 5 is formed so as to penetrate the bottom surface of the housing 1, and the fixing portion 8 has a concave shape in which a locking portion 12 to be described later is locked, and the left and right guide portions 5. 5 was formed. The shape of the guide portion 5 is not limited as long as it is a hole that engages with the guide portion 9.

  As shown in FIG. 4, the bottom of the electric device 2 includes a protrusion 10 extending vertically rearward from the bottom surface and a flange 11 that is bent and extended in the horizontal direction from the tip of the protrusion 10. A guide portion 9 is formed. The guide portions 9 are formed at the center and both ends at the upper and lower ends of the bottom surface of the electric device 2, and the guide portions 5 shown in FIG. 3 are formed at positions corresponding to the respective guide portions 9. To do. Moreover, as shown in FIG. 4, the flange part 11a of the guide part 9a formed in the center part is each extended toward both ends. On the other hand, the flange portion 11b of the guide member 9b formed at both end portions extends toward the center portion. Further, the guide member 9a formed at the center has a shape in which the guide members 9b formed at both ends are combined, and the width is formed to be approximately double. The guide member 9 may be formed only at the center portion or only at both end portions.

  As shown in FIG. 5, the lower end portion of the electric device 2 is provided with a locking portion 12 whose tip is locked to the fixing portion 8. The locking portion 12 includes a spring (not shown) urged rearward therein, and when the electric device 2 slides, its tip abuts against the bottom surface of the housing 1 and is pushed back. When it is slid to the position, it has a structure in which its tip fits into the fixed portion 8 by the bias of the spring. In addition, the latching | locking part 12 is not limited to what equips the inside with a spring, You may fit a front-end | tip to the fixing | fixed part 8 with a manual type in addition.

  With the configuration as described above, when the electric device 2 is plug-in connected to the conductive bar 3, first, the guide portion 9 of the electric device 2 is inserted into the enlarged hole portion 6 of the guide portion 5. Next, the electric device 2 is slid upward and moved to a connection position with the conductive bar 3. At this time, since the guide portion 9 slides to the narrow hole portion 7 communicating with the enlarged hole portion 6, each flange portion 11 comes into contact with the outside of the bottom surface of the housing 1, and the electric device 2 moves in the front-rear direction. Will be regulated. Further, the locking portion 12 that has been pushed back at the time of sliding is fitted and locked in the concave portion of the fixing portion 8 at the plug-in connection position. Thereby, position control of the electric equipment 2 is made and it can prevent that the electric equipment 2 remove | deviates to a slide direction. As described above, since the electrical device 2 can be plug-in connected in a space-saving manner without requiring a conventional device mounting member, the housing 1 can be reduced in size. This also makes it possible to reduce the number of parts.

  As shown in FIG. 4, the leg portion 13 is provided outside the bottom surface of the housing 1, so that the bottom surface of the housing 1 does not come into contact with a wall or the like. Therefore, even if the guide portion 5 is formed so as to penetrate the bottom surface of the housing 1 as described above, each guide portion 9 inserted through the guide portion 5 does not come into contact with a wall or the like. Can be slid smoothly. Further, by forming the thickness of the bottom surface of the housing 1 to be larger than the thickness of the narrow hole portion 7, the strength of the bottom surface can be increased.

  As shown in FIG. 2, the above-described device mounting portion 4 is provided on one side, that is, the left side in the housing 1, and the terminal portion and the wiring hole 14 are provided on the other side, that is, the right side. As the terminal portions, an incoming terminal portion 15 for connecting a power line connecting portion 18 of the conductive bar 3 to be described later and a power wire (not shown), and a ground terminal portion 16 are provided. In addition, a plurality of incoming terminal portions 15 are arranged adjacent to the power supply terminal side of the electrical device 2. A wiring hole 14 formed between the incoming terminal portion 15 and the ground terminal portion 16 is used for incoming and outgoing cables. With such a configuration, the dead space can be reduced. As shown in FIG. 7, the device mounting portion 4 may be provided on the right side in the housing 1, the terminal portion and the wiring hole 14 may be provided on the left side, and the ground terminal portion 16 may be an output terminal portion. It is good.

  As shown in FIGS. 2 and 3, the conductive bar 3 for two poles provided on the terminal block 19 on the power source side is a plug-in extending in the insertion direction of the omitted electrical equipment 2, that is, in a direction perpendicular to the vertical direction. A substantially L-shape (to a plane parallel to the bottom surface of the housing 1), which is formed by inserting an insertion portion 17 and a power supply line connection portion 18 connected to a power supply line by bending approximately 90 degrees from the end of the plug-in insertion portion 17. On the projection of the above, it is assumed to exhibit a substantially L-shape having an angle of approximately 90 °. The power line connecting portion 18 is fixed to the terminal block 19 with screws. With such a configuration, as shown in FIG. 3, the conductive bars 3 are stacked in the front-rear direction so as to save space, and the power supply line connecting portion 18 is parallel to the bottom surface of the housing 1. Can be shifted from each other on the projection, and screws can be easily fixed at the incoming terminal portions 15 of the power line connecting portions 18. Furthermore, if each conductive bar 3 into which each pole of the electric device 2 is inserted has the same shape as in this embodiment, the manufacturing cost can be suppressed.

  A bar fixing screw 20 for fixing the conductive bar 3 to the terminal block 19 is provided at a substantially L-shaped corner portion of the conductive bar 3. In addition, the conductive bars 3 are arranged in a step shape by forming each terminal block 19 in a step shape.

  The shape of the conductive bar 3 is not limited to the above structure. For example, as shown in FIG. 6, there is a step in the height between the plug-in insertion portion 17 and the power line connecting portion 18 arranged in a substantially L shape. As a structure in which the stepped portion 21 is formed at the joint portion between the plug-in insertion portion 17 and the power supply line connecting portion 18, it can be used in combination with the terminal block 19 without a step. By using the terminal block 19 having no step, a screwdriver for tightening the terminal screw of the incoming terminal portion 15 can be easily accessed. Further, in any form, the end portion of each conductive bar 3 that extends to the opposite side of the power line connecting portion 18 of the plug-in insertion portion 17 may be formed at the same position in the left-right direction. If it does so, the electric equipment 2 can be connected to the electrically-conductive bar 3 irrespective of arrangement | positioning of the terminal part of each pole of the electric equipment 2. FIG.

  As shown in FIGS. 2 and 3, the conductive bar 3 is disposed along the wall surface in the housing 1. Thereby, the conductive bar 3 and the wall surface are arranged close to each other, and the inside of the housing 1 can be effectively used without generating an excessive space between the conductive bar 3 and the wall surface. Furthermore, in order to prevent the conductive bar 3 from rotating during plug-in connection, a flat wall surface may be brought into contact with the conductive bar 3, but a convex contact portion 22 is formed on the wall surface. It is preferable that the conductive bar 3 is brought into contact therewith. At that time, the dimensional accuracy with which the conductive bar 3 is brought into contact with each other without gaps is necessary, but the dimensional accuracy of only the contact portion 22 only needs to be increased, so that the manufacture becomes easy. Further, the conductive bar 3 can be fixedly disposed in the housing 1 in a space-saving manner without using a dedicated fixing member such as a bar holder.

  The invention as described above can also be applied to a distribution board. For example, in the installation space of a branch breaker or an additional device, the above-described device mounting portion 4 is formed by processing the bottom surface of the housing 1. It goes without saying that the device mounting member can be omitted by doing so.

DESCRIPTION OF SYMBOLS 1 Case 2 Electrical equipment 3 Conductive bar 4 Equipment attachment part 5 Guide part 6 Enlarged hole part 7 Narrow hole part 8 Fixing part 9 Guide part 10 Protrusion part 11 Hook part 12 Locking part 13 Leg part 14 Wiring hole 15 For entry Terminal portion 16 Ground terminal portion 17 Plug-in insertion portion 18 Power line connection portion 19 Terminal block 20 Bar fixing screw 21 Step portion 22 Contact portion

Claims (8)

In an electrical equipment storage box having a conductive bar and an electrical device plug-in connected to the conductive bar in the housing, the bottom surface of the housing itself is processed and the electrical device is slid and attached. An electrical equipment storage box, characterized in that an equipment mounting portion is formed.   The said apparatus attachment part is provided with the engaging part engaged with the said electric equipment, The board | plate thickness of the bottom face of the said housing | casing was formed more thickly than the board thickness of this engaging part. Electric equipment storage box.   The electric equipment storage box according to claim 1, wherein legs are formed on the bottom surface.   4. The electric device storage box according to claim 3, wherein the device mounting portion is provided on one side of the housing and the terminal portion is provided on the other side.   The conductive bar is substantially L-shaped having an angle of approximately 90 ° when projected onto a plane parallel to the bottom surface of the housing, and has a power line connecting portion connected to a power line at one end thereof. The electrical equipment storage box according to claim 3 or 4.   6. The electric device storage box according to claim 5, wherein the conductive bar is disposed along the wall surface in the casing.   6. The electrical equipment storage box according to claim 5, wherein the conductive bars into which the poles of the electrical equipment are inserted have the same shape.   6. The electric device storage box according to claim 5, wherein the device attachment portion is provided with a fixing portion for restricting the position of the electric device at a plug-in connection position with the conductive bar.