JP2005287130A - Distribution board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a distribution board which can avoid a trouble such as an erroneous operation due to a temperature rise by releasing heat generated at an internal unit or a master bar rapidly to a body. <P>SOLUTION: In the distribution board in which a breaker and the other internal unit are mounted on a unit mounting board 2 provided on a body 1, a protruding part 7 is formed in the device mounting board 2, contacted with the body 1, and the heat of the internal unit is released directly to the body 1. The protruding part 7 formed at least at one of the unit mounting board 2 and the body 1 is formed at a part corresponding to the master breaker 4 or a master bar 6 having large a amount of a calorific value. When a branch breaker mounting board 3 is provided on the upper surface of the device mounting board 2, it is preferable to provide a heat conductive member between the boards. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a distribution board in which a breaker and other internal devices are mounted inside a body.

Conventional distribution boards have equipment mounting rails on both sides of a steel plate body, and mounting plates such as a main breaker and a branch breaker are fixed on those rails. It has a structure in which an internal device such as a breaker is attached (Patent Document 1). These internal devices and the main bar generate heat when energized. Conventionally, the mounting plate is lifted from the steel plate body by the rails on both sides, so that the generated heat is difficult to escape to the body. For this reason, depending on the use conditions, there is a possibility that the temperature rises excessively, causing an internal device such as a breaker to malfunction or the resin member to be deformed.
JP-A-3-243123

  In order to solve the above-described conventional problems, the present invention provides a distribution board that can quickly release the heat generated by internal devices and main bars to the body and avoid troubles such as malfunction due to temperature rise. It was made.

  The distribution board of the first invention made to solve the above-mentioned problems is a distribution board provided with a device mounting plate to which a breaker and other internal devices are mounted. It is characterized in that a convex part is formed for escape. The distribution board of the second invention is a distribution board having an equipment mounting plate to which a breaker or other internal equipment is mounted, in order to let the heat generated by the internal equipment directly escape to the body on at least one of the equipment mounting plate or the body. Protruding portions are provided, and the protruding portions are formed on at least one of the main breaker corresponding portion or the main bar corresponding portion. It is preferable to provide a heat conducting member between the device mounting plate and the branch breaker mounting plate on the upper surface thereof. Moreover, it is preferable to have a structure in which a plurality of bridges having different directions are cut and raised on the device mounting plate, and a branch breaker mounting plate is supported on these cut and raised bridges.

  In the distribution board according to the first aspect of the present invention, since a convex portion is formed on the device mounting plate to directly release the heat generated by the internal device to the body, the internal device does not become hot during use, and the internal device malfunctions. Or the resin member may be deformed. Further, the distribution board of the second invention is provided with a convex portion on at least one of the device mounting plate or the body for allowing the heat generated by the internal device to escape directly to the body, and the convex portion is a main breaker corresponding portion or a main bar corresponding portion. Therefore, heat can be effectively released from the portion where the heat generation amount is large.

  In addition, if a heat conducting member such as an aluminum block is provided between the equipment mounting plate of the main bar corresponding part and the branch breaker mounting plate on the upper surface thereof, the heat generated by the main bar can be quickly generated through this heat conducting member. It can be transmitted to the device mounting plate and escaped to the body through the convex part. If a structure is adopted in which a plurality of bridges with different directions are cut and raised on the device mounting plate and the branch breaker mounting plate is supported by these cut and raised bridges, the manufacturing cost will be low and the load from which direction will be reduced. However, it is possible to have a uniform strength.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing the inside of a distribution board according to the embodiment, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a sectional view thereof. In these drawings, 1 is a steel plate body, 2 is a steel plate device mounting plate provided on the body 1, and 3 is a branch breaker mounting plate provided on the device mounting plate 2. 1 and 2 show a main breaker 4 mounted on the device mounting plate 2 and a number of branch breakers 5. As shown in FIG. 3, the distribution board of this embodiment is of a type having a three-pole main bar 6 at the center and plug-in connection of the power supply side terminals of the branch breaker 5.

In the first aspect of the invention, the device mounting plate 2 is provided with a downward convex portion 7 and brought into contact with the body 1 as shown in FIG. 3, and heat generated from internal devices such as the main breaker 4 and the branch breaker 5 is generated from the convex portion 7. It has escaped to the body 1 directly. 4 and 5 are drawings in which only the device mounting plate 2 is taken out. In the second invention, the device mounting plate 2 is provided with three convex portions 7 at the center. These convex portions 7 are formed by embossing, and are provided at a portion corresponding to the main breaker 4 having a large calorific value and a portion corresponding to the main bar 6. The convex portion 7 may be provided on at least one of the device mounting plate 2 or the body 1. Further, as shown in FIGS. 6 and 7, the convex portion 7 of the device mounting plate 2 may be formed by cutting up. The peripheral edge portion of any device mounting plate 2 is bent downward and maintains a certain height from the body 1. Note that the rigidity of the device mounting plate 2 can be increased by changing the direction of cutting and raising to a direction perpendicular to each other instead of a fixed direction.

  As shown in FIG. 1, the main breaker 4 is directly attached to the equipment mounting plate 2. For this reason, the heat generated by the main breaker 4 can escape to the steel plate body 1 through the convex portion 7 of the device mounting plate 2. However, the branch breaker 5 is mounted using the slit 8 by mounting the branch breaker mounting plate 3 as shown in FIG. Therefore, as shown in FIG. 3, in the plug-in type distribution board, the main bar 6 is positioned above the branch breaker mounting plate 3, and it is difficult to transmit heat generated by the main bar 6 to the device mounting plate 2. Therefore, it is desirable to provide a heat conducting member 9 between the device mounting plate 2 and the branch breaker mounting plate 3 on the upper surface thereof so as to be located immediately below the main bar 6.

  The heat conducting member 9 is made of a material having a high thermal conductivity such as an aluminum block, for example, and is screwed onto the convex portion 7 of the device mounting plate 2 as shown in FIG. Further, as shown in FIG. 8, it is preferable that the bridge 10 formed by bending the steel plate is screwed to a position directly above the other convex portion 7 to transfer the heat of the branch breaker mounting plate 3 to the device mounting plate 2. This bridge 10 also exhibits the same function as the heat conducting member 9. If the heat conducting member 9 and the bridge 10 are provided so as to be orthogonal to the longitudinal direction and the width direction of the device mounting plate 2 as in this embodiment, the rigidity of the device mounting plate 2 can be increased. In the case where the bridge 10 is cut and raised from the device mounting plate 2 and oriented in a direction perpendicular to each other as shown in FIG. 9, heat conduction can be performed and the rigidity of the device mounting plate 2 can be increased.

  FIG. 10 is a perspective view showing a state where the device mounting plate 2 is attached to the body 1. Shield support fittings 11 are provided at the four corners, and shields 12 as shown in FIG. When the shield 12 is made of resin and thinned, the shield 12 may be greatly bent and broken when the shield 12 is removed from the body 1 for construction or the like. Therefore, in this embodiment, the rigidity of the shield 12 is enhanced by bending the outer edge portion of the shield 12 at a right angle and bending the outside at a right angle in the opposite direction to form the flange portion 13.

  In the embodiment described above, the device mounting plate 2 is directly attached to the body 1, but in other embodiments shown in FIGS. 12 and 13, rails 14 are attached to both sides of the body 1, A device mounting plate 2 for the main breaker 4 and a branch breaker mounting plate 3 for the branch breaker 5 are mounted on the top. Although not shown, a protrusion 7 is formed on the lower surface of the equipment mounting plate 2 for the main breaker 4, and the heat generated in the main breaker 4 is directly released to the body 1 as in the other embodiments.

  In the conventional distribution board, a wide rail 14 as shown in FIG. 14 is used so that various members can be mounted, and the branch breaker 5 and the like are screwed to the branch breaker mounting plate 3 on the rail 14. In that case, it was necessary to form the through hole 15 in order to prevent interference between the rail 14 and the tip of the mounting screw. On the other hand, in this embodiment, the rail 14 is provided outside the outer end surface of the branch breaker mounting plate 3 so that interference with the tip of the mounting screw does not occur. For this reason, the processing man-hour of the rail 14 can be reduced. In addition, 16 is a vertical rail for attaching the rails 14 and 14 to the body 1, and 17 is a wiring hole formed in the body 1.

  As described above, the distribution board according to the first aspect of the present invention generates the internal device and the main bar 6 by forming the projection 7 on the device mounting plate 2 for directly releasing the heat of the internal device to the body 1. Heat can be quickly released to the body 1 to avoid troubles such as malfunction of internal devices and thermal deformation of resin parts due to temperature rise. In the distribution board of the second invention, since the convex portion 7 is formed on at least one of the main breaker corresponding portion or the main bar corresponding portion, heat can be effectively released from the portion where the heat generation amount is large.

It is a front view which shows the inside of the electricity distribution panel of embodiment. It is a disassembled perspective view which shows the inside of the distribution board of embodiment. It is sectional drawing which shows the inside of the electricity distribution panel of embodiment. It is a perspective view which shows an example of an apparatus mounting plate. It is the front view (A) and sectional drawing (B) which show an example of an apparatus mounting plate. It is a perspective view which shows the other example of an apparatus mounting plate. It is the front view (A) and sectional drawing (B) which show the other example of an apparatus mounting plate. It is a perspective view which shows the state which attached the heat conductive member etc. to the apparatus mounting plate. It is a perspective view which shows the other example of an apparatus mounting plate. It is a perspective view of the body which attached the apparatus mounting plate. It is the front view and sectional drawing of a shield. It is a front view of a rail-mounted distribution board. It is a perspective view of a rail mounting type distribution board. It is a front view of the conventional rail mounting type distribution board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 2 Equipment mounting plate 3 Branch breaker mounting plate 4 Master breaker 5 Branch breaker 6 Master bar 7 Convex part 8 Slit 9 Thermal conduction member 10 Bridge 11 Shield support metal fitting 12 Shield 13 Flange part 14 Rail 15 Through-hole 16 Vertical rail 17 Wiring Hole

Claims (4)

  A distribution board provided with a device mounting plate to which a breaker or other internal device is mounted, wherein the device mounting plate is formed with a convex portion for allowing heat generated by the internal device to escape directly to the body.   In a distribution board equipped with a device mounting plate to which a breaker or other internal device can be mounted, at least one of the device mounting plate or the body is provided with a convex portion for directly releasing heat from the internal device to the body, and the convex portion is the main A distribution board formed on at least one of a breaker-corresponding part and a main bar-corresponding part.   The distribution board according to claim 1 or 2, wherein a heat conduction member is provided between the device mounting plate and the branch breaker mounting plate on the upper surface thereof.   3. The distribution board according to claim 1 or 2, wherein a plurality of bridges having different directions are cut and raised on the device mounting plate, and a branch breaker mounting plate is supported on these bridges.

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