JP4493545B2 - Electrical and electronic equipment storage box and assembly method thereof - Google Patents

Description

  The present invention relates to an electric / electronic equipment storage box having a function capable of protecting internal equipment from vibration caused by an earthquake and an assembling method thereof.

  Electrical and electronic equipment storage boxes such as switchboard cabinets generally have a metal frame structure, so that they are unlikely to be damaged even when subjected to severe vibration due to an earthquake. However, internal electrical and electronic equipment may be destroyed by vibration, which may cause a serious problem in recovery.

Therefore, in Patent Document 1, the electrical and electronic equipment storage box has a double structure of an outer case and an inner case, and an elastic member such as rubber is interposed between them to improve the earthquake resistance and protect the internal equipment from vibration. What was done is described. However, such a conventional structure has a problem that a substantial device storage space is remarkably limited because an inner case larger than the opening of the outer box cannot be inserted. In addition, since the integrated inner case is used, there is a problem that the positional relationship between the front, rear, left, and right device mounting surfaces cannot be changed, and there is a problem that the manufacturing of the inner case is expensive.
Japanese National Patent Publication No. 11-501499

  The present invention solves the above-mentioned conventional problems, can take a large device storage space, can reliably protect internal devices from vibration caused by earthquakes, and can be manufactured at an inexpensive electrical and electronic device storage box. It was made in order to provide the assembly method. Another object of the present invention is to provide an electrical / electronic equipment storage box and its assembling method capable of changing the positional relationship between the front / rear / right / left equipment mounting surfaces.

  The electrical and electronic equipment storage box of the present invention, which has been made to solve the above problems, has viscoelastic members disposed on the bottom surface and the ceiling surface of the outer box, and plate-like or frame-like rail supports on these viscoelastic members. The apparatus mounting rail is fixed directly or via an mounting member between the upper and lower rail supports. In addition, it is preferable that the mounting position of the device mounting rail with respect to the rail support is movable, and the outer box is configured as a frame frame that combines a vertical frame, a horizontal frame, and a depth frame, and is horizontally placed inside the horizontal frame or the depth frame. It is preferable that a wide portion in the direction is provided and a viscoelastic member is disposed in the wide portion. Furthermore, it is preferable that the elastic characteristics of the viscoelastic member on the ceiling surface side be softer than the elastic characteristics of the viscoelastic member on the bottom surface side.

  In addition, the electrical and electronic equipment storage box assembly method of the present invention, which has been made to solve the above-described problems, includes the attachment of the viscoelastic member and the rail support to the bottom and ceiling surfaces of the outer box, and then the upper and lower rail supports. The apparatus mounting rail is incorporated directly or via an mounting member therebetween.

  Since the electrical and electronic equipment storage box of the present invention is such that equipment mounting rails are fixed between plate-like or frame-like rail supports attached to viscoelastic members disposed on the bottom and ceiling surfaces of the outer box, Compared to the case where the inner case is housed in the outer box as described above, a larger device storage space can be obtained, and the manufacturing cost can be reduced. In addition, since the vibration due to the earthquake is not directly transmitted to the rail support body supported via the viscoelastic member and the equipment mounting rail attached to the rail support body, the internal equipment can be reliably protected.

  The electrical and electronic equipment storage box assembly method according to the present invention includes a viscoelastic member and a rail support attached to the bottom surface and the ceiling surface of the outer box, and then the equipment directly or between the upper and lower rail supports. Since the mounting rail is incorporated, the assembly workability is good, and the assembly is possible regardless of the size of the opening of the outer box.

  FIG. 1 is an overall perspective view showing an embodiment of the present invention. In the figure, reference numeral 1 denotes an outer box of an electric / electronic equipment storage box, which has a known structure in which four vertical frames 2, horizontal frames 3, and depth frames 4 are combined in a rectangular parallelepiped shape. Device mounting holes are formed in each frame at a predetermined pitch.

  As shown in FIG. 2, in this embodiment, wide portions 5 in the horizontal direction are provided inside each depth frame 4, and a plurality of viscoelastic members 6 are arranged in these wide portions 5. Although only the bottom side of the outer box 1 is shown in FIG. 2, the same applies to the ceiling side.

  The structure of the viscoelastic member 6 is not particularly limited. In this embodiment, as shown in FIG. 3 and the subsequent drawings, a plurality of layers of gel-like viscoelastic bodies 7 are laminated between the rigid plates 8 and the center portion. A structure in which the strength member 9 is disposed is used. In FIG. 3, the strength member 9 is a rigid cylinder, and in FIG. 4, the strength member 9 is a rigid sphere. These strength members 9 support a vertical load, but the viscoelastic members 6 do not prevent the viscoelastic body 7 from being deformed when a shearing force is applied to the rigid plate 8 as shown in FIG. It can move to some extent in the horizontal direction inside. The strength member 9 is not necessarily a rigid body, and may be an elastic body such as a coil spring as long as it can support a vertical load. Further, the rigid plate 8 may be provided as necessary.

  As shown in FIG. 2, in this embodiment, four viscoelastic members 6 are arranged above and below the outer box 1, and a rail support 10 is attached to these viscoelastic members 6 by bolts or the like. . As shown in FIG. 6, in this embodiment, the rail support 10 has a flat plate shape, and its outer dimension is slightly smaller than the inner dimension of the outer box 1, and the rail support 10 supported by the viscoelastic member 6 is horizontal. It can be displaced in the direction. However, as shown in FIG. 8, the rail support 10 can be a frame-like structure close to a flat plate.

  Four device mounting rails 11 are fixed between the upper and lower rail supports 10 and 10. In this embodiment, the device mounting rail 11 is a metal rail having a U-shaped cross section and includes a number of device mounting holes 12. The upper and lower ends of each device mounting rail 11 are fixed to the rail support 10 via the mounting member 13, but may be directly fixed.

  In the embodiment of FIG. 6, the mounting position of the mounting member 13 with respect to the rail support 10 can be changed in the front, rear, left and right directions, and the positional relationship between the front, rear, left and right device mounting surfaces can be freely set. Accordingly, it is possible to cope with the size of the internal device. Moreover, as shown in FIG. 7, the auxiliary rail 15 provided with many attachment holes 14 on both sides of the rail support body 10 may be provided horizontally so that the attachment position of the device attachment rail 11 can be changed.

  The electrical and electronic equipment storage box of the present invention configured as described above attaches electrical and electronic equipment using equipment mounting rails 11 and 11, and the mounting method of the internal equipment is the same as the conventional one. However, since the upper and lower rail supports 10, 10 to which the device mounting rail 11 is fixed are supported by the outer box 1 via the viscoelastic members 6, 6, severe rolling vibration caused by an earthquake is caused by the viscoelastic member 6. It is absorbed and not directly transmitted to the equipment mounting rail 11, and damage to the internal equipment can be prevented. In addition, since the viscoelastic members 6 are arranged above and below, the vertical shaking is not greatly amplified.

  When assembling the electrical / electronic equipment storage box of the present invention, the frame structure of the outer box 1 is first assembled, and the viscoelastic member 6 and the rail support 10 are respectively attached to the bottom surface and the ceiling surface. A method of incorporating the equipment mounting rail 11 between 10 and 10 is preferable. If the device mounting rail 11 is incorporated without the side plate, the back plate, the door, or the like of the outer box 1, workability is good and the size of the opening of the outer box 1 is not limited.

  In addition, when it receives the roll vibration by an earthquake, the vertical frame of the outer case 1 receives the force transmitted from the viscoelastic member on the ceiling surface side, and it is not a little. For this reason, if the elastic characteristics of the upper and lower viscoelastic members 6 are the same, when the viscoelastic member 6 on the bottom side reaches the characteristic limit, the viscoelastic member 6 on the ceiling surface side still has room. Thus, the meaning of arranging the viscoelastic members 6 above and below is halved. That is, the viscoelastic member 6 on the ceiling surface side does not function sufficiently due to the limitation due to the characteristics of the viscoelastic member 6 on the bottom surface side.

  Therefore, in a preferred embodiment, the elastic characteristics of the viscoelastic member 6 on the ceiling surface side are made softer than the elastic characteristics of the viscoelastic member 6 on the bottom surface side. Thereby, the function of both the viscoelastic members 6 can fully be exhibited, and roll vibration can be attenuated. Further, if the strength member 9 is a coil spring, it is possible to absorb vibrations in the vertical direction, and it is possible to provide an electric / electronic device storage box that is resistant to both horizontal and vertical vibrations.

  In this embodiment, the viscoelastic member has been described as having a vibration damping action that suppresses vibration by converting vibration energy into thermal energy. However, the viscoelastic member is used as having a seismic isolation action considering the resonance frequency of the box. It is good also as what acts both. Thus, the viscoelastic member as a vibration damping member and a seismic isolation member is used.

1 is an overall perspective view showing an embodiment of the present invention. It is a disassembled perspective view of the principal part. It is a perspective view which shows an example of a viscoelastic member. It is a perspective view which shows another viscoelastic member. It is sectional drawing which shows the deformation | transformation state of a viscoelastic member. It is a principal part perspective view of the state which attached the rail support body. It is a principal part perspective view of the state which attached the apparatus attachment rail. It is a principal part perspective view of the state which attached the other rail support body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer box 2 Vertical frame 3 Horizontal frame 4 Depth frame 5 Wide part 6 Viscoelastic member 7 Viscoelastic body 8 Rigid board 9 Strength member 10 Rail support body 11 Equipment mounting rail 12 Equipment mounting hole 13 Mounting member 14 Mounting hole 15 Auxiliary rail

Claims (5)

  Viscoelastic members are placed on the bottom and ceiling surfaces of the outer box, and plate-like or frame-like rail supports are attached to these viscoelastic members, and equipment is attached directly between the upper and lower rail supports or via attachment members. Electrical and electronic equipment storage box characterized by fixing rails.   The electric and electronic equipment storage box according to claim 1, wherein the mounting position of the equipment mounting rail with respect to the rail support is movable.   The outer box is configured as a frame frame in which a vertical frame, a horizontal frame, and a depth frame are combined, a horizontal wide portion is provided inside the horizontal frame or the depth frame, and a viscoelastic member is disposed in the wide portion. The electrical and electronic equipment storage box according to claim 1.   The electrical and electronic equipment storage box according to claim 1, wherein the elastic characteristics of the viscoelastic member on the ceiling surface side are made softer than the elastic characteristics of the viscoelastic member on the bottom surface side.   The method for assembling an electric / electronic equipment storage box according to claim 1, wherein the viscoelastic member and the rail support are respectively attached to the bottom surface and the ceiling surface of the outer box, and then the mounting member is directly or between the upper and lower rail supports. A method for assembling an electric / electronic equipment storage box, wherein equipment mounting rails are incorporated.

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