JP7056046B2 - Board - Google Patents

Description

The present invention relates to a board. More specifically, a panel provided with a box-shaped housing such as a control panel, a distribution board, a power panel, and a distribution board and internal equipment housed therein, and suppresses vibration inside the housing of the internal equipment. Regarding.

Devices abbreviated as panels such as control boards, switchboards, power boards, and distribution boards are necessary to perform the functions required for the boards, such as inverters, converters, transformers, circuit breakers, capacitors, and coils. Various electric devices are housed in a box-shaped housing. A general housing has a structure in which a frame called a board frame for structurally maintaining its shape is surrounded by sheet metal for the safety of surrounding workers and the protection of internal electrical equipment (). For example, see Patent Document 1).

In order to protect the internal electrical equipment from vibrations caused by earthquakes and transportation, the panel is required to take measures against vibrations such as seismic resistance, vibration control, and seismic isolation. Here, as the vibration damping structure of the board, for example, it is conceivable to change the thickness of a part of the frame of the housing and change the resonance frequency of the part that vibrates greatly. However, steel is often used for the frame, and steel has a small internal attenuation, and it is difficult to reduce the thickness in order to lower the natural frequency from the viewpoint of strength. Also, increasing the thickness to increase the natural frequency of the frame increases the overall weight and thus the cost. Therefore, as measures against vibration of the board, 1. 2. Have effective vibration control and seismic isolation functions. 3. Have appropriate strength. Low cost, 4. 5. Do not interfere with the layout inside the housing. It is preferable to meet all vibration damping requirements such as easy maintenance.

Further, for example, in Patent Document 2, an internal housing whose upper and lower sides are supported by a viscoelastic body is provided inside the box-shaped outer housing, and the electric device to be protected is provided in the inner housing. A structural board has been proposed. According to the board of Patent Document 2, by supporting the inner housing via the viscoelastic body, the vibration transmitted to the electric device inside the inner housing can be efficiently attenuated.

Japanese Unexamined Patent Publication No. 2008-148421 Japanese Unexamined Patent Publication No. 2007-21916

However, although the viscoelastic body can improve the vibration damping property, for example, when a transformer or a capacitor is targeted for protection, it is not strong enough to suppress the shaking of these heavy objects, so that peripheral cables may be broken. There is. That is, among the above five vibration damping requirements, 1. And 2. Cannot fully meet the requirements of.

It is an object of the present invention to provide a board that meets appropriate vibration damping requirements for protecting electrical equipment inside a housing.

(1) The board (for example, the inverter boards 1, 1A, 1B described later) has a box-shaped housing (for example, the housing 2 described later) and the bottom of the housing (for example, the rail members 26a, 26b described later). ) (For example, a pedestal portion 27 described later) and an internal device (for example, a lower portion 31 described later) provided inside the housing and having a lower portion thereof (for example, a lower portion 31 described later) fixed to the pedestal portion. An internal device 3) described later, a housing-side fixing member (for example, a horizontal frame 23 described later) that is a part of the frame of the housing and is provided at a position higher than the pedestal portion, and an upper portion of the internal device (for example, the horizontal frame 23 described later). For example, the device-side fixing member (for example, the device-side fixing member 5, 5A, 5B described later) fixed to the upper portion 32) described later is provided, and the housing-side fixing member and the device-side fixing member are described above, respectively. The internal device is provided with facing surfaces (for example, first facing surface 521, second facing surface 531, front surface 241 and back surface 242, facing surface 591, etc., which will be described later) facing each other in a state of being fixed to the pedestal portion. Friction members (for example, first friction plate 55, second friction plate 56, first friction materials 571 to 574 described later) are placed on both or one of the facing surface of the housing-side fixing member and the facing surface of the device-side fixing member. , Second friction material 581 to 584, second friction material 587, first cam 61, second cam 62, etc.).

(2) In this case, the housing has a plurality of vertical frames extending in the vertical direction (for example, vertical frames 21a to 21d described later) and two adjacent vertical frames extending in the horizontal direction. It is preferable that a plurality of horizontal frames (for example, a horizontal frame 23 described later) for connecting the two are provided, and the housing-side fixing member is one of the plurality of horizontal frames.

(3) In this case, the internal device has a substantially rectangular shape in a top view, and the internal device includes a short side (for example, a short side portion 33 described later) and a housing-side fixing member in the upper top view. It is preferable that the device-side fixing member extends from the short side to the housing-side fixing member so as to be provided inside the housing so as to face each other and be substantially parallel to each other.

(4) In this case, a gap (for example, a gap 552,562,576,586, which will be described later) is provided between the friction member and the surface facing the friction member or the friction member provided on the surface. The friction member is not in contact with the surface facing the friction member or the friction member provided on the surface when the internal device is stationary, and faces the friction member when the internal device vibrates. It is preferable to be in contact with a surface or a friction member provided on the surface.

(5) In this case, the housing-side fixing member includes a plate-shaped housing plate portion (for example, a housing plate portion 24 described later), and the device-side fixing member is the housing plate portion in a top view. A plate-shaped first equipment plate portion (for example, the first equipment plate portion 52 described later) having a first facing surface (for example, the first facing surface 521 described later) facing the surface (for example, the surface 241 described later). And a plate-shaped second equipment plate portion (for example, a plate-shaped second equipment plate portion (for example, the second facing surface 531 described later) having a second facing surface (for example, the second facing surface 531 described later) facing the back surface (for example, the back surface 242 described later) of the housing plate portion in top view. It is preferable that the second equipment plate portion 53) described later is provided, and the friction member is provided on both or either of the front surface and the first facing surface, and on both or either of the back surface and the second facing surface. ..

(6) In this case, the friction member is a plate-shaped friction material (for example, the first friction plate 55 and the second friction plate 56 described later) extending in parallel with the first facing surface and the second facing surface. It is preferable that the first facing surface and the second facing surface are provided, respectively.

(7) In this case, the friction member is a hemispherical friction material (for example, first friction materials 571 to 574 and second friction materials 581 to 584, which will be described later), and the first facing surface and the second. It is preferable that at least one is provided on each of the facing surfaces.

(8) In this case, the friction member is provided with a first cam (for example, a first cam described later) that is rotatably provided between the facing surface of the housing-side fixing member and the facing surface of the device-side fixing member. The cam 61) and the second cam (for example, the second cam 62 described later), and the rotation shaft of the first cam (for example, the rotation shaft 61a described later) and the rotation shaft of the second cam (for example, the second cam 62). The rotation shaft 62a) described later is substantially parallel, and the first cam has a facing surface of the housing side fixing member (for example, the back surface 242 described later) and a facing surface of the device side fixing member (for example, facing each other described later). Rotating to one side between the surface 591) disengages the housing-side fixing member and the device-side fixing member, and rotating to the other side causes the housing-side fixing member and the device-side fixing member to be disconnected. When the second cam is rotated to the one side, the housing side fixing member and the device side fixing member are connected to each other, and when the second cam is rotated to the other side, the housing side fixing member and the device side are connected. It is preferable to put the fixing member in a non-connected state.

(9) In this case, the first bottom surface (for example, the first bottom surface 612 described later) on the lower side in the vertical direction from the first center of gravity of the first cam (for example, the first center of gravity 618 described later) is the rotation axis thereof. The second bottom surface (for example, the second bottom surface 622 described later) which is arcuate in a side view along the above-mentioned side and is vertically lower than the second center of gravity of the second cam (for example, the second center of gravity 628 described later) is The first cam and the second cam are arcuate in a side view along the rotation axis, and the first cam and the second cam are the facing surface of the housing-side fixing member and the device in a part of the first bottom surface and the second bottom surface, respectively. It is preferable that the side fixing member is in contact with the lower of the facing surfaces (for example, the facing surface 591 described later).

(10) In this case, the first cam in the connected state is a first contact portion which is a part of the first top surface (for example, the first top surface 614 described later) on the upper side in the vertical direction from the first center of gravity. (For example, in the first contact portion 615 described later), the first apex is in contact with the higher of the facing surface of the housing side fixing member and the facing surface of the device side fixing member (for example, the facing surface 591 described later). The distance in the side view between one point on the surface and the first center of gravity becomes shorter toward the other side from the first contact portion, and the second cam in the connected state is vertical from the second center of gravity. In the second contact portion (for example, the second contact portion 625 described later) which is a part of the second top surface (for example, the second top surface 624 described later) on the upper side in the direction, the facing surface of the housing side fixing member and the said The distance in the side view between one point of the second top surface and the second center of gravity, which is in contact with the higher of the facing surfaces of the device-side fixing member (for example, the facing surface 591 described later), is the second. It is preferable that the length becomes shorter from the contact portion toward the one side.

(11) In this case, of the housing-side fixing member and the device-side fixing member, the one having the lower facing surface (for example, the device plate portion 59 described later) has a first bottom portion (for example, for example) of the first cam. A first recess (for example, a first recess 592 described later) accommodating a first bottom portion 611 (described later) and a second recess (for example, a second bottom portion 621 described later) accommodating a second bottom portion of the second cam. , The second recess 596) described later is formed, and the height of the first rotation barrier portion (for example, the first rotation barrier portion 594 described later), which is the barrier on the other side of the first recess, is the first. The height of the second rotation barrier portion (for example, the second rotation barrier portion 598 described later), which is lower than the first center of gravity and is the barrier on one side of the second recess, is lower than the second center of gravity. Is preferable.

(12) In this case, the height of the first regulatory barrier portion (for example, the first regulatory barrier portion 595 described later), which is the barrier on one side of the first recess, is higher than that of the first rotation barrier portion. In a state where the first cam is in contact with the first regulation barrier portion, whichever is higher of the facing surface of the first contact portion and the housing-side fixing member and the facing surface of the device-side fixing member (for example, described later). A gap is formed between the back surface and the back surface 242), and the height of the second regulatory barrier portion (for example, the second regulatory barrier portion 599 described later), which is the barrier on the other side of the second recess, is the second height. In a state where the height is higher than the rotation barrier portion and the second cam is in contact with the second regulation barrier portion, either the facing surface of the second contact portion and the housing-side fixing member or the facing surface of the device-side fixing member. It is preferable that a gap is formed between the height and the higher one (for example, the back surface 242 described later).

(1) According to the board of the present invention, a pedestal portion is provided at the bottom of the box-shaped housing, and the lower portion of the internal device to be protected is fixed to the pedestal portion. Further, a device-side fixing member is fixed to the upper part of the internal device, and a part of the frame of the housing and provided at a position higher than the pedestal portion is used as the housing-side fixing member. Further, among these housing-side fixing members and device-side fixing members, friction members are provided on both or one of the facing surfaces facing each other in a top view when the internal device is fixed to the pedestal portion. Therefore, when vibration is transmitted to the internal device inside the housing and the upper part thereof is displaced along a predetermined vibration direction, the facing surface of the housing-side fixing member and / or the facing surface of the device-side fixing member The provided friction member is in sliding contact with the facing surface facing the same or another friction member provided on the facing surface. Therefore, the vibration of the internal device is efficiently suppressed by the housing having higher strength and less shaking than the internal device. As described above, in the board of the present invention, a part of the frame of the housing is used as the fixing member on the housing side. Therefore, in the panel of the present invention, maintenance is easy because it is only necessary to provide the device-side fixing member on the internal device and further provide the friction member on the facing surface of the device-side fixing member and the facing surface of the housing-side fixing member. Moreover, there is no risk of obstructing the layout inside the housing, and the cost does not increase significantly. As described above, according to the board of the present invention, the vibration of the internal device can be sufficiently suppressed with a simple configuration.

(2) In the board of the present invention, one of a plurality of horizontal frames connecting two adjacent vertical frames among a plurality of vertical frames constituting the housing is used as a housing-side fixing member. By diverting the horizontal frame provided in the housing of a general board as the housing-side fixing member in this way, the cost can be suppressed. Further, for example, when the entire housing vibrates due to an earthquake, the upper part of the internal equipment inside the housing is displaced along the horizontal direction. The vibration of the equipment can be suppressed efficiently.

(3) When the entire housing vibrates, the upper part of the internal equipment inside the housing is displaced more along the short side direction than in the long side direction. Therefore, in the board of the present invention, the internal device is provided inside the housing so that the short side thereof and the housing-side fixing member face each other and are substantially parallel to each other. Further, the device-side fixing member fixed to the upper part of the internal device extends from the short side thereof to the housing-side fixing member. As a result, the vibration of the internal device, which is largely displaced along the short side direction, can be efficiently suppressed by the housing-side fixing member.

(4) According to the board of the present invention, when the internal device is stationary, a certain friction member is not in contact with a surface facing the friction member or another friction member provided on this surface, and the internal device vibrates. In this state, a certain friction member comes into contact with a surface facing the friction member or another friction member provided on this surface. This makes it possible to efficiently suppress the vibration transmitted to the internal device while facilitating the maintenance of the internal device.

(5) According to the board of the present invention, at least a part of the plate-shaped housing plate portion provided on the device-side fixing member is formed by the first device plate portion and the second device plate portion provided on the device-side fixing member. Sandwiched. Further, according to the board of the present invention, the friction member is attached to both or either of the front surface of the housing plate portion and the first facing surface of the first equipment plate portion, and the back surface of the housing plate portion and the second equipment plate portion. Provided on both or either of the second facing surfaces. According to the board of the present invention, the vibration transmitted to the internal device can be efficiently suppressed by sandwiching the housing plate portion between the first device plate portion and the second device plate portion.

(6) In the board of the present invention, a plate-shaped friction material extending in parallel with the first facing surface and the second facing surface is adopted as the friction member, and the plate-shaped friction material is used on the first and second facing surfaces. By providing each of them, it is possible to efficiently suppress the vibration transmitted to the internal device with a simple configuration.

(7) In the board of the present invention, a hemispherical friction material is used as the friction member, and at least one of the hemispherical friction materials is provided on each of the first and second facing surfaces, so that the inside can be easily configured. The vibration transmitted to the device can be efficiently suppressed.

(8) In the board of the present invention, as the friction member, a first cam and a second cam rotatably provided between the facing surface of the housing-side fixing member and the facing surface of the device-side fixing member are adopted. .. When the first cam is rotated to one side, the housing-side fixing member and the device-side fixing member are connected, and when the first cam is rotated to the other side, the housing-side fixing member and the device-side fixing member are not connected. Further, when the second cam is rotated to one side, the housing side fixing member and the device side fixing member are disconnected, and when the second cam is rotated to the other side, the housing side fixing member and the device side fixing member are connected. Therefore, due to the vibration transmitted to the internal device, the device-side fixing member is displaced with respect to the housing-side fixing member along the direction perpendicular to the rotation axis of the first and second cams, and the first and second cams are displaced along the rotation axis. When rotated along the above, the device-side fixing member and the housing-side fixing member are connected by at least one of these two cams, so that vibration transmitted to the internal device can be efficiently suppressed with a simple configuration. Can be done.

(9) According to the board of the present invention, a part of the arc-shaped first bottom surface of the first cam and a part of the arc-shaped second bottom surface of the second cam are the facing surface of the housing side fixing member and the device side fixing member. It touches the lower of the facing surfaces of. As a result, when vibration is transmitted to the internal equipment, the first cam and the second cam rotate so that their bottom surfaces roll on the facing surfaces, and as described above, the connected state and the unconnected state. Switches in a complementary manner. According to the board of the present invention, vibration transmitted to an internal device can be efficiently suppressed with a simple configuration.

(10) The distance in the side view between one point on the first top surface of the first cam and its first center of gravity is shorter from the first contact portion in contact with the facing surface to the other side in the connected state. As a result, when the first cam is rotated to the other side, the first contact portion and the facing surface are in contact with each other to be in a connected state, and when the first cam is rotated to one side, a gap is created between the first top surface and the facing surface. By being formed, it becomes a non-connected state. Further, the distance in the side view between one point on the second top surface of the second cam and the second center of gravity thereof is shorter toward one side from the second contact portion in contact with the facing surface in the connected state. As a result, when the second cam rotates to the other side, a gap is formed between the second top surface and the facing surface, so that the second cam becomes unconnected, and when it rotates to one side, it faces the second contact portion. When it comes into contact with the surface, it becomes connected. According to the board of the present invention, vibration transmitted to an internal device can be efficiently suppressed with a simple configuration.

(11) According to the board of the present invention, the first cam and the second cam are housed in the first recess and the second recess. Further, the height of the first rotation barrier portion, which is the barrier on the other side of the first recess, is lower than the first center of gravity of the first cam, and the second rotation barrier, which is the barrier on one side of the second recess. The height of the portion is lower than the second center of gravity of the second cam. As a result, when vibration is transmitted to the internal device and the first concave portion is displaced to one side, the first rotation barrier portion abuts on the portion of the first bottom portion of the first cam that is lower than the first center of gravity. Therefore, a moment is generated in the first cam centering on the vicinity of the first center of gravity, and the first contact portion is lifted by this moment, and the connected state is established as described above. On the other hand, when vibration is transmitted to the internal device and the second recess is displaced to the other side, the second rotation barrier portion abuts on the second bottom portion of the second cam, which is lower than the second center of gravity. , A moment is generated in the second cam centering on the vicinity of the second center of gravity, and the second contact portion is lifted by this moment, and is in a connected state as described above. As described above, according to the board of the present invention, the first cam and the second cam can be rotated by the vibration transmitted to the internal device, and the vibration transmitted to the internal device can be efficiently suppressed.

(12) According to the board of the present invention, the height of the first restricting barrier portion, which is the barrier on one side of the first recess, is higher than that of the first rotation barrier, and the first cam serves as the first restricting barrier. In the contacted state, a gap is formed between the first contact portion and the facing surface. Further, the height of the second regulating barrier portion, which is the barrier on the other side of the second recess, is higher than that of the second rotation barrier, and when the second cam is in contact with the second regulating barrier, the height of the second regulating barrier portion is higher than that of the second contact portion. A gap is formed between the facing surface and the facing surface. As a result, when vibration is transmitted to the internal equipment and the first recess is displaced to the other side, the first cam comes into contact with the first regulatory barrier, and a gap is formed between the first contact portion and the facing surface. Then, it becomes a non-connected state as described above. On the other hand, when vibration is transmitted to the internal device and the second recess is displaced to one side, the second cam comes into contact with the second regulation barrier, and a gap is formed between the second contact portion and the facing surface. , It becomes a non-connected state as described above. As described above, according to the board of the present invention, the first cam and the second cam can be rotated by the vibration transmitted to the internal device, and the vibration transmitted to the internal device can be efficiently suppressed.

It is a breaking perspective view which shows the structure of the inverter board which concerns on 1st Embodiment of this invention. It is a side view of a pedestal part. It is a side view of a pedestal part. It is sectional drawing which follows the line BB of FIG. It is a figure which shows typically the state that the internal device vibrates inside the housing, and the upper part is displaced along the short side direction. It is a side view which shows the structure of the device side fixing member and the horizontal frame in the inverter board which concerns on 2nd Embodiment of this invention. It is a top view which shows the structure of the device side fixing member and the horizontal frame. It is a top view which shows the structure of the device side fixing member and the horizontal frame. It is a breaking perspective view which shows the structure of the inverter board which concerns on 3rd Embodiment of this invention. It is a top view which shows the structure of the device side fixing member and the horizontal frame. 9 is a cross-sectional view taken along the line CC of FIG. It is a figure which shows typically the state which the device plate part was displaced to the 2nd cam side with respect to the housing plate part along the short side direction. It is a figure which shows typically the state which the device plate part was displaced to the 1st cam side with respect to the housing plate part along the lateral direction.

<First Embodiment>
Hereinafter, the first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cutaway perspective view showing the configuration of the inverter board 1 according to the present embodiment. The inverter panel 1 is a type of control panel that supplies electric power to a dynamometer (not shown), and includes a box-shaped housing 2 and an internal device 3 provided inside the housing 2. Hereinafter, the case where the present invention is applied to the inverter board 1 will be described, but the present invention is not limited to this. The present invention can be applied not only to the inverter board 1, but also to a control board, a distribution board, a power board, a distribution board, and the like.

The internal device 3 is composed of, for example, a plurality of transformers, and its overall shape is substantially cubic as shown in FIG. 1, and is substantially rectangular when viewed from above. Therefore, when the entire housing 2 vibrates due to an earthquake, movement, or the like, the upper portion 32 of the internal device 3 provided inside the housing 2 is displaced more along the short side SD than the longitudinal LD in the top view. .. That is, the short side SD is also the vibration direction of the internal device 3 inside the housing 2.

The housing 2 extends in a direction perpendicular to the vertical frames 21a, 21b, 21c, 21d and the vertical frames 21a to 21d, that is, in the horizontal direction, and the plurality of vertical frames 21a, 21b, 21c, 21d, respectively. A plurality of horizontal frames 23 connecting two adjacent frames 21a to 21d, and a plurality of plate-shaped sheet metals 25a, 25b, 25c fixed to the vertical frames 21a to 21d form the bottom of the housing 2. It includes two rail members 26a and 26b, and a pedestal portion 27 provided on these rail members 26a and 26b. Note that FIG. 1 shows only the horizontal frame 23, which is provided at a position higher than the pedestal portion 27 and extends along the SD in the lateral direction, among the plurality of horizontal frames. Further, for the vertical frames 21a to 21d and the horizontal frame 23, for example, a steel material is used.

The pedestal portion 27 has two pillar members 271,272 extending along the longitudinal direction LD and two fixing jigs 273,274 extending along the lateral SD and connecting the two pillar members 271,272. And a plurality of connecting bolts 275a, 275b, 275c for connecting both ends of the fixing jigs 273 and 274 along the SD in the lateral direction and the pillar members 271,272, and the bottoms of the two pillar members 271,272. A plurality of roller members 279a, 279b, 279c, which are rotatably provided in the above, are provided.

The lower portion 31 of the internal device 3 is fixed to the fixing jigs 273 and 274 of the pedestal portion 27 by fastening members (not shown) such as bolts and screws. Further, the pedestal portion 27 to which the internal device 3 is fixed is housed inside the housing 2 as shown in FIG. 1 by pushing the roller members 279a to 279c toward the sheet metal 25a while rolling along the rail members 26a and 26b. Will be. After the pedestal portion 27 is housed inside the housing 2, it is fixed to the rail members 26a and 26b by fastening members (not shown) such as bolts and screws in order to restrict movement on the rail members 26a and 26b. As a result, the internal device 3 is provided inside the housing 2 so that the device-side fixing member 5 described later provided on the short side 33 in the top view of the upper portion 32 and the horizontal frame 23 face each other and are substantially parallel to each other. Be done.

FIG. 2A is a side view of the pedestal portion 27. More specifically, it is a view of the pedestal portion 27 viewed from the vertical frame 21c, 21d side along the longitudinal direction LD, and is a diagram showing a connection structure between the internal device 3 and the pedestal portion 27. As shown in FIG. 2A, the end portion 273a on the column member 271 side is inserted with two plate-shaped anti-vibration rubbers 276a and 277a along the SD in the lateral direction of the fixing jig 273, and the connecting bolt 275a is inserted. By fastening, it is fixed to the pillar member 271. The anti-vibration rubber 276a is inserted between the connecting bolt 275a and the end portion 273a, and the anti-vibration rubber 277a is inserted between the end portion 273a and the pillar member 271. Further, the end portion 273c on the side of the pillar member 272 along the SD in the lateral direction of the fixing jig 273 is inserted into the two plate-shaped anti-vibration rubbers 276c and 277c, and the connecting bolt 275c is fastened to fasten the pillar. It is fixed to the member 272. The anti-vibration rubber 276c is inserted between the connecting bolt 275c and the end portion 273c, and the anti-vibration rubber 277c is inserted between the end portion 273c and the pillar member 272.

Note that FIG. 2A has described a case where the fixing jig 273 and the pillar member 271 are fixed by inserting two pieces of anti-vibration rubber, but the present invention is not limited to this. For example, as shown in FIG. 2B, the fixing jig 273 and the pillar member 271 may be fixed by inserting one anti-vibration rubber. In this case, the anti-vibration rubber 277a is preferably inserted between the end portion 273a and the pillar member 271. Further, the anti-vibration rubber 277c is preferably inserted between the end portion 273c and the pillar member 272.

Returning to FIG. 1, the horizontal frame 23 is substantially L-shaped in cross-sectional view, and includes a plate-shaped housing plate portion 24 extending along the horizontal direction.

Further, a plate-shaped device-side fixing member 5 extending along the horizontal direction is fixed to the upper portion 32 of the internal device 3. The device-side fixing member 5 has a plate-shaped base end portion 51 extending along a short side portion 33 facing the horizontal frame 23 in the upper portion 32 of the internal device 3, and a housing plate portion 24 side from the base end portion 51. It is provided with a first equipment plate portion 52 and a second equipment plate portion 53 extending to, and a plurality of connecting bolts 54a and 54b for fixing the base end portion 51 to the short side portion 33. Further, for example, a steel material is used for the first equipment plate portion 52 and the second equipment plate portion 53.

As shown in FIG. 1, the first equipment plate portion 52 and the second equipment plate portion 53 have a plate shape extending substantially parallel to the housing plate portion 24 of the horizontal frame 23, respectively. Further, in a state where the internal device 3 is fixed to the pedestal portion 27, the housing plate portion 24 is provided between the first device plate portion 52 and the second device plate portion 53. The first equipment plate portion 52 is provided at a position higher than the housing plate portion 24, that is, on the surface 241 side of the housing plate portion 24, and the second equipment plate portion 53 is located at a position lower than the housing plate portion 24. That is, it is provided on the back surface 242 side of the housing plate portion 24. That is, the first device plate portion 52 has a facing surface facing the surface 241 of the housing plate portion 24 in a top view in a state where the internal device 3 is fixed to the pedestal portion 27, and the second device plate portion 53 has a second device plate portion 53. In a state where the internal device 3 is fixed to the pedestal portion 27, the internal device 3 is provided with a facing surface facing the back surface 242 of the housing plate portion 24 in a top view.

FIG. 3 is a cross-sectional view taken along the line BB of FIG. It is a cross-sectional view.

As shown in FIG. 3, of the first equipment plate portion 52, the first facing surface 521 facing the surface 241 of the housing plate portion 24 has a plate-shaped first surface extending substantially parallel to the first facing surface 521. A friction plate 55 is provided. Further, on the second facing surface 531 facing the back surface 242 of the housing plate portion 24 of the second equipment plate portion 54, a plate-shaped second friction plate 56 extending substantially parallel to the second facing surface 531 is provided. ing. Further, as the first friction plate 55 and the second friction plate 56, known friction materials such as a steel material, a non-asbestos material, a semi-metallic material, a carbon metallic material, and a metallic material are used.

Further, a slight gap 552 is provided along the vertical direction between the surface 551 of the first friction plate 55 and the surface 241 of the housing plate portion 24, and the surface 561 of the second friction plate 56 and the housing are provided. A slight gap 562 is provided along the vertical direction between the plate portion 24 and the back surface 242. Therefore, when the internal device 3 is stationary inside the housing 2, the surface 551 of the first friction plate 55 is not in contact with the surface 241 of the housing plate portion 24 facing the surface 551 of the first friction plate 55, and the second friction plate 56 is not in contact with the surface 241. The front surface 561 is not in contact with the back surface 242 of the housing plate portion 24 facing the front surface 561.

FIG. 4 is a diagram schematically showing a state in which the internal device 3 vibrates inside the housing 2 and the upper portion 32 thereof is displaced along the short side direction SD. As shown in FIG. 4, when the upper portion 32 of the internal device 3 is displaced along the short side direction SD, the first device plate portion 52 and the second device plate portion 53 are a casing that is a part of the frame of the housing 2. Since it is inclined with respect to the body plate portion 24, a part of the first friction plate 55 and the second friction plate 56 is in sliding contact with the front surface 241 and the back surface 242 of the housing plate portion 24, and the displacement thereof is restricted. Therefore, even when the entire housing 2 vibrates, the two device plate portions 52, 53 and the upper portion 32 of the internal device 3 to which these device plate portions 52, 53 are fixed are along the short side SD. Vibration is suppressed.

In this embodiment, the first friction plate 55 is provided on the first facing surface 521 of the first equipment plate portion 52, and the second friction plate 56 is provided on the second facing surface 531 of the second equipment plate portion 53. However, the present invention is not limited to this. The first friction plate 55 may be provided on the front surface 241 of the housing plate portion 24, or the second friction plate 56 may be provided on the back surface 242 of the housing plate portion 24. Further, these friction plates may be provided on both the first facing surface 521 of the first equipment plate portion 52 and the surface 241 of the housing plate portion 24, or may be provided with the second facing surface 531 of the second equipment plate portion 53. It may be provided on both the back surface 242 of the housing plate portion 24.

Further, in the present embodiment, the case where the housing plate portion 24 is sandwiched between the two device plate portions 52 and 53 has been described, but the present invention is not limited to this. The number of equipment plates may be one.

<Second Embodiment>
Next, the second embodiment of the present invention will be described with reference to the drawings.
FIG. 5 is a side view showing the configuration of the device-side fixing member 5A and the horizontal frame 23 in the inverter board 1A according to the present embodiment. More specifically, FIG. 5 is a view of the device-side fixing member 5A and the horizontal frame 23 as viewed along the short side SD. FIG. 6 is a top view showing the configuration of the device-side fixing member 5A and the horizontal frame 23. More specifically, FIG. 6 is a view of the device-side fixing member 5A and the horizontal frame 23 viewed from the first device plate portion 52 side in the vertical direction. In the following description of the inverter board 1A, the same reference numerals are given to the same configurations as the inverter board 1 according to the first embodiment, and detailed description thereof will be omitted. The inverter board 1A of the present embodiment has a different configuration of the device-side fixing member 5A from the inverter board 1 according to the first embodiment.

Of the first equipment plate portion 52, the first facing surface 521 facing the surface 241 of the housing plate portion 24 has a plurality of (four in the example of FIG. 6) hemispherical first friction materials in a side view. 571, 57, 573, 574 are provided. Two of these first friction materials 571 to 574 are provided in a row along the lateral SD on the lateral frame 23 side and the base end portion 51 side of the first facing surface 521.

Of the second equipment plate portion 53, the second facing surface 531 facing the back surface 242 of the housing plate portion 24 has a plurality of (four in the example of FIG. 6) hemispherical second friction materials in a side view. 581, 582, 583, 584 are provided. These second friction materials 581 to 584 are each provided at positions of the second facing surface 531 facing the first friction materials 571 to 574 in a top view. As the first friction materials 571 to 574 and the second friction materials 581 to 584, known friction materials such as steel materials, non-asbestos materials, semi-metallic materials, carbon metallic materials, and metallic materials are used.

Further, a slight gap 576 is provided along the vertical direction between the top surface 575 of each of the first friction materials 571 to 574 and the surface 241 of the housing plate portion 24, and the second friction material 581. A slight gap 586 is provided along the vertical direction between the top surface 585 of each of 584 and the back surface 242 of the housing plate portion 24. Therefore, when the internal device 3 is stationary inside the housing 2, the top surface 575 of the first friction materials 571 to 574 is not in contact with the surface 241 of the housing plate portion 24 facing the top surface 575, and the second friction material 3 is not in contact with the surface 241 of the housing plate portion 24. The top surface 585 of the friction materials 581 to 584 is not in contact with the back surface 242 of the housing plate portion 24 facing the top surface 585.

Further, as in the inverter board 1 of the first embodiment, when the upper portion 32 of the internal device 3 is displaced along the short side direction SD, the first device plate portion 52 and the second device plate portion 53 become the housing plate portion 24. Since it is inclined with respect to the above, a part of the first friction materials 571 to 574 and the second friction materials 581 to 584 is in sliding contact with the front surface 241 and the back surface 242 of the housing plate portion 24, and the displacement thereof is restricted. Therefore, even when the entire housing 2 vibrates, the two device plate portions 52, 53 and the upper portion 32 of the internal device 3 to which these device plate portions 52, 53 are fixed are along the short side SD. Vibration is suppressed.

In the present embodiment, a case where four hemispherical friction materials are provided on each of the first device plate portion 52 and the second device plate portion 53 has been described, but the present invention is not limited to this. At least one hemispherical friction material may be provided on each of the first equipment plate portion 52 and the second equipment plate portion 53. Further, the hemispherical friction material may be provided on the front surface 241 or the back surface 242 of the housing plate portion 24.

Further, in the present embodiment, the case where the second friction materials 581 to 584 are provided at positions facing the first friction materials 571 to 574 in the top view of the second facing surface 531 respectively has been described, but the present invention has been described. Not limited to. For example, as schematically shown in FIG. 7, the second friction material 587 may be provided at a position not facing the first friction materials 571 to 574 when viewed from above.

<Third Embodiment>
Next, the third embodiment of the present invention will be described with reference to the drawings.
FIG. 8 is a cutaway perspective view showing the configuration of the inverter board 1B according to the present embodiment. In the following description of the inverter board 1B, the same reference numerals are given to the same configurations as the inverter board 1 according to the first embodiment, and detailed description thereof will be omitted. The inverter board 1B of the present embodiment has a different configuration of the device-side fixing member 5B from the inverter board 1 according to the first embodiment.

A plate-shaped device-side fixing member 5B extending along the horizontal direction is fixed to the upper portion 32 of the internal device 3. The device-side fixing member 5B has a plate-shaped base end portion 51 extending along a short side portion 33 facing the horizontal frame 23 in the upper portion 32 of the internal device 3, and a housing plate portion 24 side from the base end portion 51. A device plate portion 59 extending to the side and a plurality of connecting bolts 54a and 54b for fixing the base end portion 51 to the short side portion 33 are provided.

As shown in FIG. 8, the equipment plate portion 59 has a plate shape extending substantially parallel to the housing plate portion 24 of the horizontal frame 23. Further, in a state where the internal device 3 is fixed to the pedestal portion 27, the device plate portion 59 is provided at a position lower than the housing plate portion 24, that is, the device plate portion 59 is provided on the back surface 242 side of the housing plate portion 24. That is, the device plate portion 59 includes a facing surface facing the back surface 242 of the housing plate portion 24 when viewed from above in a state where the internal device 3 is fixed to the pedestal portion 27.

FIG. 9 is a top view showing the configuration of the device-side fixing member 5B and the horizontal frame 23. More specifically, FIG. 9 is a view of the device-side fixing member 5B and the horizontal frame 23 viewed from the housing plate portion 24 side in the vertical direction.

A first cam 61 and a second cam 62 are rotatably provided between the back surface 242 of the housing plate portion 24 and the facing surface 591 of the device plate portion 59 facing the back surface 242. The first cam 61 and the second cam 62 are columnar columns extending along the respective rotation shafts 61a and 62a. The rotation shaft 61a of the first cam 61 and the rotation shaft 62a of the second cam 62 are substantially parallel to each other, and are substantially parallel to the longitudinal LD perpendicular to the short side SD. Further, as the first cam 61 and the second cam 62, known friction materials such as a steel material, a non-asbestos material, a semi-metallic material, a carbon metallic material, and a metallic material are used.

FIG. 10 is a cross-sectional view taken along the line CC in FIG. 9, and is a cross-sectional view taken along the short side direction SD of the overlapping portions of the device plate portion 59 and the housing plate portion 24 in the top view. ..

The device plate portion 59 has a concave first concave portion 592 accommodating the first bottom portion 611 of the first cam 61 and a concave second concave portion 596 accommodating the second bottom portion 621 of the second cam 62. It is formed in a row along the direction SD.

The first bottom surface 612, which is vertically lower than the first center of gravity 618 of the first cam 61, has a substantially arc shape in a side view along the rotation axis 61a. The first cam 61 is provided so as to be in contact with the bottom surface 593 of the first recess 592 in a part of the first bottom surface 612. The second bottom surface 622 on the lower side in the vertical direction from the second center of gravity 628 of the second cam 62 has a substantially arc shape in a side view along the rotation axis 62a. The second cam 62 is provided so as to be in contact with the bottom surface 597 of the second recess 596 in a part of the second bottom surface 622.

The first top surface 614 on the upper side in the vertical direction from the first center of gravity 618 of the first cam 61 is substantially flat in the side view. Further, of the first top surface 614, a first contact portion 615 in contact with the back surface 242 of the housing plate portion 24 is formed on the second cam 62 side in a connected state described later. Further, the distance L in the side view between the one point P of the first top surface 614 and the first center of gravity 618 becomes shorter toward the first cam 61 side along the short side SD from the first contact portion 615. ..

The second top surface 624 on the upper side in the vertical direction of the second center of gravity 628 of the second cam 62 is substantially flat in the side view. Further, of the second top surface 624, a second contact portion 625 that is in contact with the back surface 242 of the housing plate portion 24 is formed on the first cam 61 side in a connected state described later. Further, similarly to the first cam 61, the distance in the side view between one point of the second top surface 624 and the second center of gravity 628 is from the second contact portion 625 to the second cam 62 side along the SD in the lateral direction. The closer you go, the shorter it gets.

The height h1 along the vertical direction from the bottom surface 593 of the first rotation barrier portion 594, which is the barrier on the side of the first cam 61 along the SD in the lateral direction of the first recess 592, is the bottom surface 593 of the first center of gravity 618. It is lower than the height along the vertical direction. Further, the height h2 along the vertical direction from the bottom surface 593 of the first regulation barrier portion 595, which is the barrier on the second cam 62 side along the SD in the lateral direction of the first recess 592, is higher than the above-mentioned height h1. expensive. Further, as shown in FIG. 10, the height h2 of the first regulation barrier portion 595 is such that the first contact portion 615 and the housing plate portion 24 are in contact with the first regulation barrier portion 595 when the first cam 61 is in contact with the first regulation barrier portion 595. It is adjusted so that a gap is formed between the back surface and the back surface 242.

Further, similarly to the first recess 592, the height of the second recess 596 along the vertical direction from the bottom surface 597 of the second rotation barrier portion 598, which is the barrier on the second cam 62 side along the SD in the lateral direction, is , It is lower than the height along the vertical direction from the bottom surface 597 of the second center of gravity 628. Further, the height along the vertical direction from the bottom surface 597 of the second regulation barrier portion 599, which is the barrier on the first cam 61 side along the SD in the lateral direction of the second recess 596, is the above-mentioned second rotation barrier portion. It is higher than the height of 598. Further, as shown in FIG. 10, the height of the second regulation barrier portion 599 is such that when the second cam 62 is in contact with the second regulation barrier portion 599, the height of the second contact portion 625 and the back surface of the housing plate portion 24 It is adjusted so that a gap is formed between the 242 and the 242.

Next, the functions of the first cam 61 and the second cam 62 when the internal device 3 vibrates will be described with reference to FIGS. 11 and 12.

In FIG. 11, when the internal device 3 vibrates inside the housing 2, the device plate portion 59 fixed to the internal device 3 with respect to the housing plate portion 24 which is a part of the frame of the housing 2. It is a figure which shows typically the state of being displaced toward the 2nd cam 62 side along the side side SD.

When the equipment plate portion 59 is displaced toward the second cam 62 along the SD in the lateral direction, the first rotation barrier portion 594 of the first recess 592 abuts on the first bottom portion 611 of the first cam 61. As described with reference to FIG. 10, since the height of the first rotation barrier portion 594 is lower than the first center of gravity 618 of the first cam 61, the first cam 61 is in the vicinity of the first center of gravity 618. A central moment is generated, and the first contact portion 615 is lifted upward in the vertical direction by this moment, and the first contact portion 615 comes into contact with the back surface 242 of the housing plate portion 24 as shown in FIG. As a result, in the first cam 61, the equipment plate portion 59 and the housing plate portion 24 are connected to each other, and the displacement of the equipment plate portion 59 toward the second cam 62 side along the SD in the lateral direction is restricted.

When the device plate portion 59 is displaced toward the second cam 62 along the SD in the lateral direction, the second regulating barrier portion 599 of the second recess 596 comes into contact with the second cam 62. Therefore, a gap is formed between the second contact portion 625 of the second cam 62 and the back surface 242 of the housing plate portion 24. As a result, the second cam 62 makes the equipment plate portion 59 and the housing plate portion 24 unconnected.

FIG. 12 schematically shows a state in which the device plate portion 59 is displaced toward the first cam 61 with respect to the housing plate portion 24 along the SD in the lateral direction due to the internal device 3 vibrating inside the housing 2. It is a figure which shows.

When the equipment plate portion 59 is displaced toward the first cam 61 along the SD in the lateral direction, the second rotation barrier portion 598 of the second recess 596 comes into contact with the second bottom portion 621 of the second cam 62. As described with reference to FIG. 10, since the height of the second rotation barrier portion 598 is lower than the second center of gravity 628 of the second cam 62, the second cam 62 is in the vicinity of the second center of gravity 628. A central moment is generated, and the second contact portion 625 is lifted upward in the vertical direction by this moment, and the second contact portion 625 comes into contact with the back surface 242 of the housing plate portion 24 as shown in FIG. As a result, in the second cam 62, the device plate portion 59 and the housing plate portion 24 are connected to each other, and the displacement of the device plate portion 59 toward the first cam 61 side along the SD in the lateral direction is restricted.

When the device plate portion 59 is displaced toward the first cam 61 along the SD in the lateral direction, the first regulating barrier portion 595 of the first recess 592 comes into contact with the first cam 61. Therefore, a gap is formed between the first contact portion 615 of the first cam 61 and the back surface 242 of the housing plate portion 24. As a result, the first cam 61 disengages the device plate portion 59 and the housing plate portion 24.

In the present embodiment, the case where the device plate portion 59 is lower than the housing plate portion 24 and the device plate portion 59 is provided with the first cam 61 and the second cam 62 has been described. Not exclusively. For example, the housing plate portion may be lower than the equipment plate portion, and the housing plate portion may be provided with the first cam and the second cam.

1,1A, 1B ... Inverter board (board)
2 ... Housing 21a, 21b, 21c, 21d ... Vertical frame 23 ... Horizontal frame (horizontal frame, housing side fixing member)
24 ... Housing plate portion 241 ... Surface (opposing surface, surface)
242 ... Back side (opposite side, back side)
3 ... Internal equipment 31 ... Lower 32 ... Upper 33 ... Short side (short side)
5,5A, 5B ... Equipment side fixing member 52 ... First equipment plate portion 521 ... First facing surface (opposing surface, first facing surface)
53 ... Second equipment plate part 531 ... Second facing surface (opposing surface, second facing surface)
55 ... First friction plate (friction member, friction material)
552 ... Gap 56 ... Second friction plate (friction member, friction material)
562 ... Gap 571,572,573,574 ... First friction material (friction member, friction material)
576 ... Gap 581-584 ... Second friction material (friction member, friction material)
586 ... Gap 586 (Gap)
59 ... Equipment plate part 591 ... Facing surface 592 ... First recess 594 ... First rotation barrier part (first rotation barrier part)
595 ... 1st regulatory barrier (1st regulatory barrier)
596 ... 2nd recess 598 ... 2nd rotation barrier part 599 ... 2nd regulation barrier part 61 ... 1st cam (friction member, 1st cam)
61a, 61b ... Rotating shaft 611 ... 1st bottom 612 ... 1st bottom surface 614 ... 1st top surface 615 ... 1st contact portion 618 ... 1st center of gravity 62 ... 2nd cam (friction member, 2nd cam)
62a ... Rotating shaft 621 ... Second bottom 622 ... Second bottom surface 624 ... Second top surface 625 ... Second contact portion (second contact portion)
628 ... 2nd center of gravity

Claims (12)

With a box-shaped housing,
The rail member provided at the bottom of the housing and
A pedestal portion provided at the bottom of the housing so as to be movable along the rail member, and
A board provided inside the housing and having an internal device whose lower portion is fixed to the pedestal portion, which is a part of the frame of the housing and is provided at a position higher than the pedestal portion. With the housing side fixing member,
A device-side fixing member fixed to the upper part of the internal device is provided.
The housing-side fixing member and the device-side fixing member face each other in a top view in a state where the pedestal portion is pushed into the housing along the rail member and the internal device is fixed to the pedestal portion. Equipped with facing surfaces to
A board characterized in that a friction member is provided on both or any of the facing surface of the housing-side fixing member and the facing surface of the device-side fixing member. The housing comprises a plurality of vertical frames extending along the vertical direction and a plurality of horizontal frames extending along the horizontal direction and connecting two adjacent vertical frames.
The board according to claim 1, wherein the housing-side fixing member is one of the plurality of horizontal frames. The internal device has a substantially rectangular shape when viewed from above, and has a substantially rectangular shape.
The internal device is provided inside the housing so that the short side in the upper top view and the housing-side fixing member face each other and are substantially parallel to each other.
The board according to claim 2, wherein the device-side fixing member extends from the short side to the housing-side fixing member. A gap is provided between the friction member and the surface facing the friction member or the friction member provided on the surface.
The friction member is not in contact with the surface facing the friction member or the friction member provided on the surface when the internal device is stationary, and the surface facing the friction member when the internal device vibrates. The board according to any one of claims 1 to 3, wherein the board is in contact with a friction member provided on the surface. The housing-side fixing member includes a plate-shaped housing plate portion, and has a plate-shaped housing plate portion.
The device-side fixing member has a plate-shaped first device plate portion having a first facing surface facing the front surface of the housing plate portion in a top view, and a first device facing the back surface of the housing plate portion in a top view. A plate-shaped second equipment plate portion having two facing surfaces is provided.
The method according to any one of claims 1 to 4, wherein the friction member is provided on both or either of the front surface and the first facing surface, and both or either of the back surface and the second facing surface. Board. The friction member is a plate-shaped friction material extending in parallel with the first facing surface and the second facing surface, and is characterized in that the friction member is provided on the first facing surface and the second facing surface, respectively. The board according to claim 5. The board according to claim 5, wherein the friction member is a hemispherical friction material, and at least one is provided on each of the first facing surface and the second facing surface. The friction member is a first cam and a second cam rotatably provided between the facing surface of the housing-side fixing member and the facing surface of the device-side fixing member, respectively.
The rotation axis of the first cam and the rotation axis of the second cam are substantially parallel to each other.
When the first cam rotates to one side between the facing surface of the housing-side fixing member and the facing surface of the device-side fixing member, the housing-side fixing member and the device-side fixing member are disconnected from each other. When rotated to the other side, the housing-side fixing member and the device-side fixing member are connected to each other.
When the second cam rotates to one side, the housing-side fixing member and the device-side fixing member are connected to each other, and when the second cam rotates to the other side, the housing-side fixing member and the device-side fixing member are connected. The board according to any one of claims 1 to 3, wherein the board is in a non-connected state. The first bottom surface on the lower side in the vertical direction from the first center of gravity of the first cam has an arc shape in a side view along the rotation axis thereof.
The second bottom surface on the lower side in the vertical direction from the second center of gravity of the second cam has an arc shape in a side view along the rotation axis thereof.
The first cam and the second cam are in contact with the lower of the facing surface of the housing-side fixing member and the facing surface of the device-side fixing member at a part of the first bottom surface and the second bottom surface, respectively. The board according to claim 8. In the connected state, the first cam faces the facing surface of the housing-side fixing member and the facing of the device-side fixing member at the first contact portion which is a part of the first top surface on the upper side in the vertical direction from the first center of gravity. Touch the higher of the faces,
The distance in the side view between one point on the first top surface and the first center of gravity becomes shorter toward the other side from the first contact portion.
In the connected state, the second cam faces the facing surface of the housing-side fixing member and the facing of the device-side fixing member at the second contact portion which is a part of the second top surface on the upper side in the vertical direction from the second center of gravity. Touch the higher of the faces,
The board according to claim 9, wherein the distance in the side view between one point on the second top surface and the second center of gravity becomes shorter toward the one side from the second contact portion. The housing-side fixing member and the device-side fixing member having the lower facing surface have a first recess for accommodating the first bottom portion of the first cam and a second bottom portion for accommodating the second cam. 2 recesses are formed,
The height of the first rotation barrier portion, which is the barrier on the other side of the first recess, is lower than the first center of gravity.
The board according to claim 10, wherein the height of the second rotation barrier portion, which is the barrier on one side of the second recess, is lower than the second center of gravity. The height of the first regulation barrier portion, which is the barrier on one side of the first recess, is higher than that of the first rotation barrier portion.
In a state where the first cam is in contact with the first regulation barrier portion, a gap is provided between the first contact portion and the facing surface of the housing-side fixing member and the facing surface of the device-side fixing member, whichever is higher. Is formed,
The height of the second regulation barrier portion, which is the barrier on the other side of the second recess, is higher than that of the second rotation barrier portion.
In a state where the second cam is in contact with the second regulation barrier portion, a gap is provided between the second contact portion and the facing surface of the housing-side fixing member and the facing surface of the device-side fixing member, whichever is higher. The board according to claim 11, wherein is formed.

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