JP4263578B2 - Trigger mechanism of seismic isolation device - Google Patents

Description

  The present invention relates to a trigger mechanism of a seismic isolation device used for seismic isolation of various devices and isolation of detached houses.

  Conventionally, various seismic isolation devices that are attached to seismic isolation objects such as precision machines and detached houses and perform seismic isolation in the event of an earthquake have been proposed. In such a seismic isolation device, a trigger mechanism that normally locks one part on the epicenter side and the other part on the seismic isolation side in a normal state and releases the fixed state and relatively displaces both parts when an earthquake occurs. Is provided.

  In Patent Document 1, a rod (trigger pin) is inserted into each through hole of an upper and lower floor panel that is configured to be movable relative to each other to be in a fixed state. A trigger mechanism for a seismic isolation floor panel that performs seismic isolation so as to be relatively movable is disclosed.

  However, in the case of this device, since the rod body is broken in the event of an earthquake, it is necessary to replace the rod body during restoration after operation, and it is not easy to perform restoration work or the rod body must be exchanged after confirming the breaking force There is a complication. There is also a problem that it is difficult to set a trigger level when the rod is broken.

  Further, in Patent Document 2, an electromagnet is arranged on one side where relative displacement is performed, and a ferromagnetic material is arranged on the other side. Both parts are fixed by the attractive force of the electromagnet, and are detected when an earthquake occurs. A seismic isolation device fixing method is disclosed in which the attraction force of an electromagnet is released by a detection signal from a container so that both parts can be relatively displaced.

However, in this case, it is necessary to always energize the electromagnet and the detector, and it is necessary to consider maintenance and power failure during an earthquake. In addition, since the electromagnet and detector for configuring the trigger mechanism are used, there is a problem that the price of the apparatus becomes expensive.
Japanese Examined Patent Publication No. 4-67542 JP-A-11-44341

  Problems to be solved are that restoration after an earthquake is not easy, it is difficult to set the trigger level, a power supply for constant power supply is required, and the price of the equipment becomes expensive. .

  In the present invention, a torque hinge that generates a resistance force at the time of rotation and a shinji for pressing the torque hinge are disposed at both locations on the seismic isolation side and the seismic isolation side of the seismic isolation device. The main feature is that both parts are fixed by contact of the hinges to the arm, and when an earthquake occurs, the torque hinge is pushed by the hinges and rotated to release the fixation between the two parts.

  The present invention does not require a power source and the like, is simple in configuration, has high reliability, can arbitrarily set the trigger level by changing the resistance force of the torque hinge, and can use commercially available torque hinges and hinges at low cost. A trigger mechanism for seismic isolation devices can be provided.

  In the trigger mechanism of the present invention, a torque hinge that generates a resistance force at the time of rotation is disposed at one part of the seismic isolation device that is relatively displaced, and the hinge is disposed at the other part that is relatively displaced and in contact with the torque hinge. When both parts are relatively displaced in a certain direction due to vibration, the torque hinge is pushed by the hinge and rotated to release the fixation between the two parts. Demonstrate seismic motion.

Examples of the present invention will be described in detail below.
FIG. 1 thru | or FIG. 3 shows the seismic isolation apparatus 50 provided with the trigger mechanism 1 of the multiple structure of a present Example. The seismic isolation device 50 includes a pair of Y-direction rails 10 and 10 and a pair of X-direction rails 11 and 11 as main members, a total of four rollers and long hole mechanisms 21, and is disposed on the earthquake source, that is, on the ground side (or floor side). And a pair of Y direction rails 10 and 10 are arranged in parallel along the Y direction on the flat base plate 13 and a pair of Y directions. A pair of X direction rails 11, 11 are arranged in parallel along the X direction on the rails 10, 10, and a device installation plate 14 is installed on the pair of X direction rails 11, 11.

  A torque hinge 3 that generates a resistance force during rotation between the base plate 13 and the central lower side of the pair of X-direction rails 11 and 11 and between the central upper side of the pair of Y-direction rails 10 and 10 and the device installation plate 14; Two trigger mechanisms 1 each having two hinges 4 arranged in contact with the torque hinges 3 are arranged in total.

  The base plate 13 and the pair of Y-direction rails 10 and 10 can be relatively displaced in the Y-direction by a pair of roller / elongate hole mechanisms 21 as shown in FIGS.

  That is, the roller / elongate hole mechanism 21 includes a pair of support bodies 22, 22 erected along the Y direction at positions corresponding to the Y direction rails 10, 10 on the base plate 13, and a pair of Y direction rails 10, 10 is attached to the pair of support members 22 and 22 with a support shaft in the X direction at predetermined intervals along the Y direction and in the arrangement of separating the left and right from the vicinity of the center. Rollers 12, 12 fitted into the long holes 23, 23, and a connecting plate 24 for connecting portions projecting outward from the long holes 23, 23 of the rollers 12, 12 are provided. The pair of Y-direction rails 10 and 10 and the base plate 13 can be relatively displaced in the Y-direction by the rotational action.

  Further, as shown in FIGS. 2 and 3, the device installation plate 14 is connected to the pair of Y-direction rails 10 and 10 via the pair of X-direction rails 11 and 11 by the pair of rollers and the long hole mechanism 21. Relative displacement is possible in the X direction. That is, the roller / elongate hole mechanism 21 in this case is a drooping hung from the device installation plate 14 in an arrangement corresponding to the pair of X direction rails 11, 11 arranged in the X direction on the pair of Y direction rails 10, 10. Attached to the portion 25 along the X direction and separated from the center in the left and right directions by a long hole 23, 23 and a pair of X direction rails 11, 11 with a Y-axis support shaft at a predetermined interval. Rollers 12, 12 fitted into the long holes 23, 23, and a connecting plate 24 for connecting portions protruding outward from the long holes 23, 23 of the rollers 12, 12 are provided. The device installation plate 14 can be relatively displaced in the Y direction with respect to the pair of X-direction rails 11, 11 by the rotational action.

Next, the trigger mechanism 1 will be described with reference to FIGS.
FIG. 4 is a front view of the trigger mechanism 1 of the present embodiment, and FIG. 5 is a side view of the trigger mechanism 1 of the present embodiment. One trigger mechanism 1 is provided between the base plate 13 and the central lower portion of the pair of X-direction rails 11, and between the central upper portion of the pair of Y-direction rails 10 and the device installation plate 14. A total of four are arranged one by one.

  The trigger mechanism 1 having the arrangement shown in FIG. 2 will be described. On the side of the base plate 13 that is one of the members that are relatively displaced, a torque hinge 3 that generates a predetermined resistance force during rotation about the rotation shaft 5 is fixed. Yes. The rotating shaft 5 is supported on the base plate 13 by a fixed plate 5a and a shaft support member 5b.

  On the other hand, an inverted L-shaped bracket 8 is fixed to the lower center portion of the X-direction rail 11 which is the other member that is relatively displaced. The bracket 8 supports the rotation restraint member 9 fixed to the bracket 8 and the rotating shaft 5. A rotatable hinge 4 is attached to the shaft. A pressing metal 7 is attached to one end of the hinge 4, and the protruding end of the pressing metal 7 is in contact with the upper end of the torque hinge 3. The hinge 4 is biased toward the rotation restraint member 9 by a spring 6a.

  FIG. 6 shows the operating state of the trigger mechanism 1. FIG. 6 (a) shows the normal state of the trigger mechanism 1. For example, even if a disturbance such as human power acts from the right to the left shown in FIG. The base plate 13 and the X direction rail 11 are kept fixed without moving.

FIG. 6B shows a case where an earthquake force greater than the resistance force of the torque hinge 3 is applied, and the push metal fitting 7 integrated with the hinge 4 restrained by the rotation restraining member 9 rotates the torque hinge 3 in the direction of the arrow. To release the fixed state. As a result, the base plate 13 and the X direction rail 11 are relatively displaced. FIG. 6C shows a state where the base plate 13 and the X direction rail 11 are further displaced relative to each other.
FIG. 6D shows a state where the state returns to the initial position from the state of FIG. Since the pressing metal 7 can rotate in the direction of the arrow shown in FIG. 6D, even if it comes into contact with the torque hinge 3, it does not hinder the operation of the seismic isolation device.

  The trigger mechanism 1 disposed between the center upper portion of the pair of Y-direction rails 10 and the device installation plate 14 also operates in the same manner as described above, and performs fixing and unlocking therebetween.

FIG. 7 shows a plan view of a torque hinge 30 which is another example of the torque hinge 3 constituting the trigger mechanism 1.
8 is a cross-sectional view taken along line CC in FIG. One side plate 32 of the torque hinge 30 is fixed to the rotary shaft 5. The other side plate 31 constituting the torque hinge 30 is wound around the rotary shaft 5 to overlap a part thereof, and the spring force of the spring 33 wound around the bolt 34 attached to the overlapped part is adjusted by turning the nut 35. The resistance force around the rotation axis 5 of the other side plate 31 is changed. This makes it possible to change the resistance force when the torque hinge 30 rotates.

  Thus, the trigger level of the trigger mechanism 1 can be arbitrarily set by changing the resistance force of the torque hinge 30 or changing the working distance L that actually contributes to torque generation as shown in FIG. The resistance force of the torque hinge 3 or 30 can be generated using a spring, hydraulic pressure, or the like, in addition to using the friction against the rotating shaft 5 shown in the embodiment. Further, the hinge 4 may not have the spring 6a.

  The present invention can be applied not only to the above-described seismic isolation device but also to a fireproof damper that prevents the expansion of a fire during an earthquake.

It is a top view which shows the seismic isolation apparatus provided with the trigger mechanism of the some structure of the Example of this invention. It is a front view of the seismic isolation apparatus of a present Example. It is a side view of the seismic isolation apparatus of a present Example. It is an enlarged front view of the trigger mechanism of a present Example. It is an enlarged side view of the trigger mechanism of a present Example. It is operation | movement explanatory drawing of the trigger mechanism of a present Example. It is a top view of the torque hinge which is another example of the torque hinge which comprises the trigger mechanism of a present Example. It is CC sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Trigger mechanism 3 Torque hinge 4 Hinge 5 Rotating shaft 5a Fixed plate 5b Shaft support member 6a Spring 7 Push metal fitting 8 Bracket 9 Rotation restraint material 10 Y direction rail 11 X direction rail 12 Roller 13 Base plate 14 Equipment installation plate 21 Roller, long Hole mechanism 22 Support body 23 Long hole 24 Connecting plate 25 Hanging part 30 Torque hinge 31 Other side plate 32 One side plate 33 Spring 33 Bolt 34 Nut 50 Seismic isolation device

Claims (3)

In the trigger mechanism of the seismic isolation device that performs seismic isolation by allowing relative displacement of one part on the seismic source side and the other part on the seismic isolated side,
A torque hinge that generates a resistance force at the time of rotation, which is disposed at one portion that is relatively displaced;
It is arranged in the state where it contacts the torque hinge at the other part that is relatively displaced, and both parts are fixed, and when both parts are relatively displaced in a certain direction due to vibration, the torque hinge is pushed and rotated to be between the two parts. A hinge for unlocking,
A trigger mechanism for a seismic isolation device, characterized by comprising: Displaceable in the X direction via the base plate on the epicenter side, a pair of Y direction rails arranged on the base plate so as to be displaceable in the Y direction, and a pair of X direction rails arranged on the pair of Y direction rails In the trigger mechanism of the seismic isolation device that is equipped with the installed equipment installation board and performs seismic isolation in the Y direction and X direction of the seismic isolation equipment installed on the equipment installation board,
A torque hinge that generates a resistance force during rotation and disposed between the base plate and the pair of X-direction rails and between the pair of Y-direction rails and the device installation plate, and a hinge disposed in contact with the torque hinge. A trigger mechanism having a plurality of configurations,
While the hinge and the torque hinge are in contact with each other, the base plate and the pair of X-direction rails are fixed, and the pair of Y-direction rails and the device installation plate are fixed, respectively, and these are caused by vibrations in the Y direction and the X direction, respectively. The base plate and the pair of X-direction rails, the pair of Y-direction rails and the device installation plate are released from being fixed when the torque hinge is rotated relative to the base plate. The trigger mechanism of the device.   The trigger mechanism of the seismic isolation device according to claim 1, wherein the torque hinge is capable of adjusting a trigger level by changing a resistance force during rotation.

Images