JP2010183717A - Device for anti-seismic reinforcement of board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-seismic reinforcement device that reliably improves a quake resistance regardless of a vibration direction, is applicable to an existing board, and also improves the quake resistance of a board without inhibiting an insertion or extraction function, even if the board is a control center including a drawer-shaped unit. <P>SOLUTION: The anti-seismic reinforcement device is configured as follows. Frames 21, 22, and 23 forming an opening A of a power distribution board 1 are mounted with fixing seat members 7 (each first fixing seat member 7A, each second fixing seat member 7B) for fixing a door 3 formed so as to close at least a part of the opening. The door is fixed to each fixing seat member by each fastener 9 so as to integrate the frames with the door. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a seismic reinforcement device for a panel such as a switchboard, and more particularly to a seismic reinforcement device for a panel that can be preferably used for improving the seismic resistance of an existing panel, for example.

  For example, switchboards placed in power plants and the like have seismic standards according to their importance, and are designed and constructed to satisfy those standards when newly constructed. In recent years, the earthquake resistance standards have been reviewed, and the existing design may not meet the new standards. Since it is difficult to replace the equipment in operation with new equipment, it is required to improve the earthquake resistance by reinforcing installed switchboards without modifying the large-scale casing. As a conventional technique for improving the seismic resistance of the switchboard, in a door in which a free end is attached to the housing side by a hinge, the hinge side and free end side of the inner surface of the door, and both sides of the housing side facing this In addition, there is a door stopper device provided with concave and convex engaging portions that fit together when the door is closed (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 55-74207 (first page, Fig. 1, Fig. 2)

  In the conventional technology as described above, the door does not move even if deformation stress is applied to the housing at the time of the earthquake, and the effect that the breaking load is not applied to the hinge bracket and the latching portion is obtained. When the door is closed, the concave and convex engaging bodies are fixed by fitting with each other. Therefore, there is a problem that the door is vulnerable to vibration in the front-rear direction when the door is closed.

  The present invention was made to solve the above-described problems of the prior art, and provides a seismic reinforcement device that can reliably improve seismic resistance regardless of the direction of vibration and can be applied to existing panels. It is an object.

  A seismic reinforcement apparatus for a panel according to the present invention is provided with a fixed seat member for fixing a door formed so as to close at least a part of the opening to a frame part forming an opening of the board, The door is fixed to the fixed seat member with a fastener.

  According to the present invention, the fixed seat member is attached to the frame portion forming the opening of the board, and the door is fixed to the fixed seat member with the fastener, so that the earthquake resistance is improved regardless of the direction of vibration. It can be secured. In addition, the structure is simple, and even with existing panels such as switchboards, the seismic resistance can be reliably improved without extensive modification.

It is a figure explaining the case where the seismic reinforcement apparatus of the board which concerns on Embodiment 1 of this invention is applied to the existing control center, (a) is a perspective view which shows the principal part schematically, (b) is FIG. The front view of (a). The front view which shows the state which accommodated the drawer-type unit, after attaching a fixing seat member to the flame | frame part which forms the opening part of the housing | casing shown by FIG. (A) is a perspective view which shows the fixed seat member shown by FIG. 1, (b) is a perspective view which shows the other example of a fixed seat member.

Embodiment 1 FIG.
1 to 3 show a case where the seismic reinforcement device for a panel according to the first embodiment of the present invention is applied to an existing control center defined by JEM-1195 (standard for distribution boards and control panels of the Japan Electrical Manufacturers' Association). FIG. 1A is a perspective view schematically showing a main part, FIG. 1B is a front view of FIG. 1A, and FIG. 2 is a frame that forms an opening of a housing. FIG. 3A is a perspective view showing the fixed seat member shown in FIG. 1 and FIG. 2 after the fixed seat member is attached to the section and the drawer type unit is housed and the front door is removed. FIG. 3B is a perspective view showing another example of the fixed seat member. In the figure, a control center 1 as a panel is formed in a vertical direction on a housing 2 having an opening A on the front side, a plurality of unit doors 3 closing the opening A, and a right side in FIG. A duct door 4 is provided to block the wiring duct B.

  In the opening A of the housing 2, columnar frame portions 21, 22, and 23 are formed at the left end portion, the center right side portion, and the right end portion of FIG. A plurality of drawer-type units 5 (FIG. 2) are accommodated inside the opening A. The unit door 3 is formed to have a size corresponding to the height dimension of the drawer-type unit 5 and is pivotally locked to the frame portion 21 at the left end by the door hinge 6. The duct door 4 is formed to be long in the vertical direction, and is configured to be pivotably locked in the same manner as the unit door 3 by a hinge (not shown) at the frame portion 23 at the right end, and can be opened and closed. A number of screw holes and holes for fixing the door hinge 6 and the like are machined in the frame portions 21 to 23 constituting the housing 2 at regular intervals.

  Fixed seat members 7 (first fixed seat member 7A and second fixed seat member 7B) constituting an earthquake-resistant reinforcing device for fixing the unit door 3 and the duct door 4 to the frame parts 21, 22, and 23 of the housing 2. ) Has a substantially L-shaped cross section as shown in FIG. The first fixed seat member 7A in FIG. 3A is fixed to the frame parts 21 and 23 on the hinge side, and the second fixed seat member 7B in FIG. 3B is the frame part 22 on the door open side. It is fixed to. The L-shaped one side 71 of the first fixed seat member 7A is provided with a fixing portion 71a composed of a plurality of through holes through which the bolts 8 to be fixed to the frame portion 21 or 23 are inserted. A screw hole 72a for fixing the left end portion of the door 3 with a fixing bolt 9 as a fastener is provided. The other side 72 of the second fixed seat member 7B has an L-shaped inner angle side surface formed in a stepped shape including a thick first fixing portion 721 and a thin second fixing portion 722. Yes.

  The second fixing portion 722 is provided with a screw hole 72 a for fixing the right end portion of the unit door 3 with the fixing bolt 9, and the first fixing portion 721 has the left end portion of the duct door 4 with the fixing bolt 9. A screw hole 72b for fixing is provided. The space C formed by the stepped step portion is an allowance for allowing the tip of the fixing bolt 9 to escape when the fixing bolt 9 is screwed into the screw hole 72a. On the other hand, in the case of the fixed seat member 7 </ b> A, the margin portion can be formed to have an appropriate dimension by separating the inner angle side surface 72 c of the other side 72 from the front end portion of the frame portion 21. The screw threads of the screw holes 72a and 72b are not shown.

  Moreover, when attaching the 1st fixed seat member 7A to the frame part 23 of a right end part, although it is used in the state rotated 180 degree | times, in this example, it is not necessary on the effect of a seismic strength improvement, and the case where it does not use is shown Yes. Further, the drawer type unit 5 is provided with, for example, a control circuit on which various devices constituting a switchboard of a power plant are mounted. Further, as shown in FIG. 2, the dimension H, which is obtained by adding the dimension of the head of the bolt 8 and the washer not shown to the thickness of the one side 71 of the first fixed seat member 7A, It is formed smaller than the gap T between the left end surface of the drawer-type unit 5.

  Next, the operation of the first embodiment configured as described above will be described. To construct the seismic reinforcement device, first, the unit door 3 is opened and removed from the door hinge 6, and the drawer-type unit 5 is also pulled out and removed. As shown in FIGS. 1 and 2, the first fixed seat member 7 </ b> A is fixed to the frame portion 21 using the bolts 8, and the second fixed seat member 7 </ b> B is fixed to the frame portion 22 using the bolts 8. . In this example, the first and second fixed seat members 7A and 7B are attached to the left and right of the unit door 3 at two locations. Further, a screw hole for screwing the bolt 8 into the frame portions 21 and 22 may be newly provided, or a screw hole for attaching a hinge provided in advance at a predetermined interval may be used. On the other hand, the removed unit door 3 is drilled to allow the fixing bolts 9 to be inserted into the positions corresponding to the screw holes 72a in the four locations of the first and second fixed seat members 7A and 7B attached. Do. Then, the removed drawer-type unit 5 is inserted and fixed to the original position.

  FIG. 2 shows a state in which the drawer-type unit 5 is inserted after the first and second fixed seat members 7A and 7B are attached to the frame portions 21 and 22 of the housing 2 as described above. Next, the unit door 3 that has been drilled is engaged with the door hinge 6 and closed so as to close the opening A on the front side of the drawer-type unit 5, and then the unit door 3 is mounted using four fixing bolts 9. The first and second fixed seat members 7A and 7B are screwed into the screw holes 72a and fixed. As described above, the dimension H when the first fixed seat member 7A is attached to the frame portion 21 is formed smaller than the gap T between the frame portion 21 and the drawer-type unit 5, so that the first Even after the second fixed seat members 7A and 7B are mounted, the operation of inserting / withdrawing the drawer-type unit 4 into the housing 2 is not hindered.

  A plurality of drawer-type units 5 are attached in the vertical direction, and the first and second fixed seat members constituting the earthquake-proof reinforcement device are similarly applied to the attachment locations of other drawer-type units 5 adjacent in the vertical direction. 7A and 7B are mounted, and each unit door 3 is fixed to the housing 2 with fixing bolts 9. On the other hand, when the unit door 3 is removed, the duct door 4 is simultaneously removed from the hinge (not shown) on the frame portion 23 side, and the screw hole 72b of the second fixed seat member 7B attached to the frame portion 22. Drilling for inserting the fixing bolt 9 into the position corresponding to is performed. Then, after engaging with the hinge and closing the duct door 4 as before, the fixing bolt 9 is screwed into the screw hole 72b of the second fixed seat member 7B and fixed. In addition, although a fixed location may be all the positions corresponding to the 2nd fixed seat member 7B, it does not interfere even if it thins out according to the intensity | strength requested | required.

  Further, when the width dimension of the duct door 4 is large, the first fixed seat member 7A is attached to the frame portion 23 to which the hinge of the duct door 4 on the right side of the drawing is attached if necessary. The portion can also be firmly fixed by the fixing bolt 9. Furthermore, when drilling for inserting the fixing bolt 9 as described above into the unit door 3 or the duct door 4 is impossible, the first and second fixing seat members 7A and 7B are attached to the frame portions 21 to 23. Sometimes, if the unit door 3 or the duct door 4 interferes, or if the adjustment of the hinge 6 is necessary and the adjustment range is exceeded, the unit door 3 or the duct door 4 or the hinge 6 is processed so as to fit in advance. Alternatively, the seismic reinforcement device can be configured by replacing the manufactured one.

  As described above, according to the first embodiment, the unit door 3 or the duct door formed so as to block at least a part of the opening A on the frame parts 21 to 23 forming the opening A of the panel. First and second fixing seat members 7A and 7B for fixing 4 with screws are fixed, and unit door 3 or duct door 4 is fixed to the first and second fixing seat members 7A and 7B as fasteners. Since the bolts 9 are screwed and fixed, the unit door 3 or the duct door 4 is integrated with the casing 2 and part of the casing 2 improves the earthquake resistance. In addition, since the structure is simple, even with an existing panel such as a switchboard, the earthquake resistance can be reliably improved without modifying a large-scale casing.

Further, a dimension H obtained by adding the dimension of the head of the bolt 8 to the thickness of one side 71 of the first fixed seat member 7A is determined from the gap T between the inner side surface of the frame portion 21 and the left end surface of the drawer-type unit 5. Since the first and second fixed seat members 7A and 7B are mounted, the operation of inserting and pulling out the drawer-type unit 4 into the housing 2 is not hindered.
In the first embodiment, the case where the opening A of the board is formed on the front side has been described. However, the opening A is formed on the rear side, or the opening is formed on both the front side and the rear side. Even if A is formed, it can be similarly implemented. Moreover, although the example which comprised the 1st, 2nd fixing seat member 7A, 7B by the member of L-shaped cross section was shown, this shape or attachment structure etc. are not limited to what was illustrated especially, this It goes without saying that various modifications and changes can be made within the scope of the invention. For example, when the duct door 4 is not provided on the front surface side of the control center 1, the first fixed seat member 7 </ b> A is attached to the open side of the door while being rotated by 180 degrees. The number of seat members can also be reduced.

  DESCRIPTION OF SYMBOLS 1 Control center (panel), 2 Housing | casing, 3 Unit door, 4 Duct door, 21, 22, 23 Frame part, 5 Drawer type unit, 6 Door hinge, 7 Fixed seat member, 7A 1st fixed seat member, 7B 2nd fixed seat member, 71 One side, 71a Fixing part, 72 Other side, 72a Screw hole, 72b Screw hole, 72c Inner angle side surface, 721 1st fixing part, 722 2nd fixing part, 8 bolt, 9 fixing bolt ( Fastener), A opening, B duct, C space.

Claims (4)

  A fixed seat member for fixing a door formed so as to close at least a part of the opening is attached to a frame portion that forms an opening on the front surface and / or the rear surface of the panel, and the above-mentioned when the door is closed An anti-seismic reinforcement device for a panel, wherein a door is fixed to the fixed seat member with a fastener, and the frame portion and the door are integrated.   The fixed seat member has a substantially L-shaped cross section, a fixing portion for fixing to the frame portion is provided on one side of the L shape, and a screw hole for fixing the door is formed on the other side. The panel seismic reinforcement apparatus according to claim 1, wherein the apparatus is a seismic reinforcement apparatus.   A drawer-type unit is provided so as to pass through the inside of the frame portion, and the one side of the fixed seat member is formed thinner than a gap formed between the drawer-type unit and the frame portion. The seismic reinforcement apparatus for a panel according to claim 2.   The first fixed seat member formed in a substantially L-shaped cross-section, provided with a fixing portion for fixing to the frame portion on one side of the L-shape, and formed with a screw hole for fixing the door on the other side is described above. It is attached to the hinge side of the door, is formed in a substantially L-shaped cross section, and is provided with a fixing portion for fixing to the frame portion on one side of the L-shaped, and the other side has a thick L-shaped inner corner surface. A second fixed seat member formed in a stepped shape composed of one fixed portion and a thin second fixed portion and having a screw hole for fixing to the door formed in the thin second fixed portion is connected to the open side of the door. The seismic reinforcement apparatus for a panel according to claim 1, wherein the apparatus is attached to the board.

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