JP2014169791A - Damper and aseismic/vibration-control mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aseismic/vibration-control mechanism which is suitable for optimizing aseismic/vibration-control performance by a simple constitution, and arranged at a mass damper or at a structure.SOLUTION: In place of a conventional mass damper, there is provided a damper which comprises a linear motion shaft being a shaft body which has a spiral groove being a groove of a spiral shape having a prescribed lead along the longitudinal direction at an external peripheral face, a rotating body which is guided following the spiral groove, and a frame for rotatably supporting the rotating body. When the linear motion body and the rotating body are relatively displaced in the longitudinal direction, a ratio between the linear displacement of the linear motion body and the rotational displacement of the rotating body is changed according to the relative displacement.

Description

  The present invention relates to a damper and a seismic isolation mechanism provided in a building.

When an earthquake occurs, structures such as buildings and structures are shaken horizontally and vertically.
When the acceleration level due to an earthquake or the like is large, the structure is damaged, or an object in the structure receives an acceleration exceeding an expectation or a displacement exceeding the expectation.
Therefore, a seismic isolation device that reduces the vibration energy transmitted from the foundation to the structure to isolate the vibration, or a vibration suppression that absorbs the vibration energy and reduces the vibration level when the structure vibrates. Devices of various structures have been tried as devices.
By appropriately setting the specifications of the structure and the elements constituting the structure, desired seismic isolation performance and damping performance can be exhibited.

For such a purpose, a damper having a conversion mechanism between rotational motion and linear motion is used.
For example, the damper includes a friction damper, a viscous damper, a mass damper, a viscous mass damper, a tuned viscous mass damper, and the like.

The friction damper includes a linear motion shaft provided with a spiral groove having a predetermined lead along the longitudinal direction, a rotating body guided along the spiral groove, and a frame that rotatably supports the rotating body.
The friction damper has a damping coefficient c corresponding to a value obtained by dividing the reaction force acting when the linear motion shaft is linearly displaced at a constant relative speed by the relative speed due to friction.

The viscous damper includes a linear motion shaft provided with a spiral groove having a predetermined lead along the longitudinal direction, a rotating body guided along the spiral groove, a frame that rotatably supports the rotating body, an inner surface of the frame, and rotation. It is composed of a viscous fluid enclosed in a gap with the body.
The viscous damper has a damping coefficient c corresponding to a value obtained by dividing the reaction force acting when the linear motion shaft is linearly displaced at a constant relative speed by the relative speed due to the viscosity.

The mass damper includes a linear motion shaft provided with a spiral groove having a predetermined lead along the longitudinal direction, a rotating body guided along the spiral groove, and a frame that rotatably supports the rotating body.
The mass damper is an apparent value obtained by dividing the reaction force acting when the linear motion shaft is linearly displaced at a predetermined relative acceleration due to the rotational inertia moment of the rotating body by the relative acceleration of the linear motion displacement. It has an inertial mass mr.

The viscous mass damper includes a linear motion shaft provided with a spiral groove having a predetermined lead along the longitudinal direction, a rotating body guided along the spiral groove, a frame that rotatably supports the rotating body, an inner surface of the frame, It is comprised with the viscous fluid enclosed with the clearance gap between rotating bodies.
The viscous mass damper is an apparent value obtained by dividing the reaction force acting when the linear motion shaft is linearly displaced at a predetermined relative acceleration due to the viscosity and rotational moment of inertia by the relative acceleration of the linear motion displacement. It has an inertial mass mr and a damping coefficient c corresponding to a value obtained by dividing the reaction force acting when the linear motion shaft is linearly displaced at a constant relative velocity by the relative velocity.

The tuned viscous mass damper is obtained by connecting an elastic body in series to a viscous mass damper.
The tuned viscous mass damper has the elastic coefficient kb, which is a value obtained by dividing the reaction force generated when the spring element is displaced by a relative distance in the linear motion direction, and the linear motion axis of the viscous mass damper in the linear motion direction. The damper natural frequency ωr corresponding to the apparent inertia mass mr, which is a value obtained by dividing the reaction force acting in the linear motion direction when the linear motion is performed at a predetermined relative acceleration, and the linear motion axis of the viscous mass damper And a damping coefficient C corresponding to a value obtained by dividing the reaction force acting in the linear motion direction by the relative velocity when the lens is linearly moved at a constant relative velocity.

When the linear motion shaft is linearly displaced, the rotating body rotates.
A rotational reaction force corresponding to the rotational inertia ratio of the rotating body is generated. The rotational reaction force is converted into a reaction force in the direction of linear displacement by the action of the male screw and the female screw.
When the rotating body rotates, a shearing force is generated in the viscous fluid enclosed in the gap between the rotating body and the frame, and a rotational reaction force corresponding to the shearing force is generated. The rotational reaction force is converted into a reaction force in the direction of linear displacement by the action of the male screw and the female screw.
The reaction force due to the inertial force and the shearing force has a dynamic characteristic as a mass system combined by an apparent large mass and a large damping compared with the mass of the rotating body and the amount of the viscous fluid.
Since the viscous mass damper and the elastic body are connected in series, it has dynamic characteristics as a spring mass system combined by an apparent large mass and a large damping.

The inventors have found that if the damper is connected to the structure and the specifications of the damper are set to appropriate values, the structure can be efficiently isolated and controlled.
For example, if a mass damper is connected to a structure and the natural frequency of the structure and the natural frequency of the mass damper are in an appropriate relationship, the structure can be efficiently isolated and controlled. The damper used in this way is called a tuning damper.

When an earthquake does not occur, the structure is shaken by a force such as wind, and the structure is slightly shaken corresponding to the natural frequency of the structure.
When an earthquake occurs, the structure is forcibly shaken by the acceleration of the ground, and the structure shakes greatly in response to the excitation force of the earthquake.
In addition, it is reported that a phenomenon occurs in which the natural frequency of the structure changes depending on the magnitude of the shaking. This is presumably because when the deformation due to the shaking of the structure increases, a part of the structure is deformed beyond the elastic deformation region, and the apparent elastic coefficient of the structure changes.
Therefore, the optimal seismic isolation function and control can be achieved regardless of the magnitude of the swing by changing the specifications of the damper when the structure shakes slightly without an earthquake and when the earthquake occurs and the structure shakes. There is a case where you want to demonstrate the vibration function.

In addition, as a structural feature of mass dampers, viscous mass dampers, or tuned viscous mass dampers, a large reaction force is generated at the linear motion shaft or at the joint between the frame and the structure as the linear displacement speed and acceleration increase. To do.
If an unexpected magnitude of velocity or acceleration is applied to a mass damper, viscous mass damper, or tuned viscous mass damper when an earthquake occurs, and you want to prevent a large reaction force from being generated at the connection There is.

  The present invention has been devised in view of the above-described problems, and provides a damping system provided in a damper or structure suitable for optimizing the damping and damping performance with a simple configuration. try to.

  In order to achieve the above object, a damper according to the present invention includes a linear motion shaft that is a shaft body provided with a spiral groove that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface; A rotating body guided along the groove, and a frame that rotatably supports the rotating body, and the relative movement occurs when the linearly moving body and the rotating body are relatively displaced in the longitudinal direction. Thus, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body is changed.

According to the configuration of the present invention, the linear motion shaft is a shaft body provided with a spiral groove which is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface. The rotating body is guided along the spiral groove. A frame rotatably supports the rotating body. When the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the ratio of the linear moving displacement of the linear moving shaft and the rotational displacement of the rotating body changes corresponding to the relative displacement. .
Here, the lead is a distance by which the linear motion shaft relatively linearly moves when the rotating body makes a relatively one rotation following the spiral groove.
As a result, when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body rotates, and the reaction force when the linear moving shaft and the rotating body are relatively displaced changes corresponding to the relative displacement. To do.

  Below, the damper concerning the embodiment of the present invention is explained. The present invention includes any of the embodiments described below, or a combination of two or more of them.

In the damper according to the embodiment of the present invention, the linear motion shaft has a first spiral portion that forms the spiral groove having the first lead in order along the longitudinal direction and a spiral groove that has the second lead. When the spiral groove of the first spiral portion and the spiral groove of the second spiral portion are connected without a step, and the linear motion body and the rotating body are relatively displaced in the longitudinal direction. Corresponding to the relative displacement, the rotating body is guided along the spiral groove between the first spiral portion and the second spiral portion.
According to the configuration of the above-described embodiment, the linear motion shaft has a first spiral portion that forms the spiral groove having the first lead in order along the longitudinal direction and a second spiral that forms the spiral groove having the second lead. Part. The spiral groove of the first spiral portion and the spiral groove of the second spiral portion are connected without a step. Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body is guided along the spiral groove between the first spiral portion and the second spiral portion. Is done.
As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.

In the damper according to the embodiment of the present invention, the linear motion shaft has a first spiral portion forming the spiral groove having the first lead in order along the longitudinal direction and an intermediate spiral forming the spiral groove having the intermediate lead. And a second spiral part forming the spiral groove having a second lead, the spiral groove of the first spiral part, the spiral groove of the intermediate spiral part, and the spiral groove of the second spiral part Are connected to each other without a step, and when the linear motion body and the rotating body are relatively displaced in the longitudinal direction, the rotating body corresponds to the relative displacement between the first spiral portion and the second spiral portion. Guided along the spiral groove across the intermediate spiral.
According to the configuration of the above-described embodiment, the linear motion shaft has a first spiral portion that forms the spiral groove having a first lead in order along the longitudinal direction, and an intermediate spiral portion that forms the spiral groove having an intermediate lead. And a second spiral portion forming the spiral groove having a second lead. The spiral groove of the first spiral portion, the spiral groove of the intermediate spiral portion, and the spiral groove of the second spiral portion are connected without a step. Corresponding to the relative displacement when the linear motion body and the rotary body are relatively displaced in the longitudinal direction, the rotary body straddles the intermediate spiral portion between the first spiral portion and the second spiral portion. Guided along the spiral groove.
As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.

In the damper according to the embodiment of the present invention, the lead changes from the first lead to the second lead through the intermediate lead along the longitudinal direction, and the linear motion body and the rotating body are relatively relative to each other in the longitudinal direction. In response to relative displacement, the rotating body follows the spiral groove across the spiral groove of the intermediate lead between the spiral groove of the first lead and the spiral groove of the second lead. Guided.
According to the configuration of the above embodiment, the lead changes from the first lead to the second lead via the intermediate lead along the longitudinal direction. Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body is located between the spiral groove of the first lead and the spiral groove of the second lead. Guided along the spiral groove across the spiral groove of the intermediate lead,
As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes continuously corresponding to the relative displacement.

The damper according to the embodiment of the present invention forms a cylindrical portion and a spiral groove that form a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction. The rotating body has a spiral groove or the spiral part between the cylindrical part and the spiral part corresponding to the relative displacement when the linearly moving body and the rotary body are relatively displaced in the longitudinal direction. Guided along a cylinder.
According to the configuration of the above-described embodiment, a cylindrical portion that forms a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction, and a spiral portion that forms the spiral groove Have Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body is guided between the cylindrical portion and the spiral portion following the spiral groove and the cylinder. The
As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.

The damper according to the embodiment of the present invention includes a first cylindrical portion that forms a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction, and the spiral groove. An intermediate spiral portion to be formed and a second cylindrical portion that forms a cylinder having an outer diameter corresponding to a spiral groove bottom diameter of the spiral groove, and the linearly moving body and the rotating body are relatively displaced in the longitudinal direction. Sometimes, the rotating body is guided along the spiral groove or the cylinder across the intermediate spiral portion between the first cylindrical portion and the second cylindrical portion corresponding to the relative displacement.
With the configuration of the above embodiment, the first cylindrical portion and the spiral groove that form a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction are formed. An intermediate spiral portion and a second cylindrical portion forming a cylinder having an outer diameter corresponding to a spiral groove bottom diameter of the spiral groove. Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body straddles the intermediate spiral portion between the first cylindrical portion and the second cylindrical portion. It is guided along the spiral groove or the cylinder.
As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.

The damper according to the embodiment of the present invention includes a first cylindrical portion that forms a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction, and the spiral groove. An intermediate spiral portion to be formed and a second cylindrical portion that forms a cylinder having an outer diameter corresponding to a spiral groove bottom diameter of the spiral groove, and the linearly moving body and the rotating body are relatively displaced in the longitudinal direction. Sometimes, the rotating body is guided along the spiral groove or the cylinder across the intermediate cylindrical portion between the first spiral portion and the second spiral portion corresponding to the relative displacement.
With the configuration of the above embodiment, the first cylindrical portion and the spiral groove that form a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction are formed. An intermediate spiral portion and a second cylindrical portion forming a cylinder having an outer diameter corresponding to a spiral groove bottom diameter of the spiral groove. Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body straddles the intermediate cylindrical portion between the first spiral portion and the second spiral portion. It is guided along the spiral groove or the cylinder.
As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.

The damper which concerns on embodiment of this invention has a guide part which forms the guide groove in which the said linear motion axis | shaft extends in a longitudinal direction in order along the said longitudinal direction, and the spiral part which forms the said spiral groove, The said guide part When the guide groove and the spiral groove of the spiral portion are connected without a step, and the linear motion body and the rotary body are relatively displaced in the longitudinal direction, the rotary body is connected to the guide portion. It guides along the spiral groove or the guide groove between the spiral portions.
According to the configuration of the above embodiment, the linear motion shaft has a guide portion that forms a guide groove extending in the longitudinal direction in order along the longitudinal direction and a spiral portion that forms the spiral groove. The guide groove of the guide portion and the spiral groove of the spiral portion are connected without a step. When the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body is guided between the guide portion and the spiral portion along the spiral groove or the guide groove in accordance with the relative displacement. The
As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.

In the damper according to the embodiment of the present invention, the linear motion shaft has a first guide member that forms a guide groove extending in the longitudinal direction in order along the longitudinal direction, an intermediate spiral portion that forms the spiral groove, and the longitudinal direction. A second guide portion that forms a guide groove extending longitudinally along the first guide portion, the guide groove of the first guide portion, the spiral groove of the intermediate spiral portion, and the guide groove of the second guide portion. When the linear moving body and the rotating body are displaced relative to each other in the longitudinal direction, the rotating body is connected between the first guide portion and the second guide portion so as to correspond to the intermediate spiral. Guided along the guide groove or the spiral groove across the part,
According to the configuration of the above-described embodiment, the linear motion shaft extends in the longitudinal direction along the longitudinal direction, the first guide member that forms a longitudinally extending guide groove, the intermediate spiral portion that forms the spiral groove, and the longitudinal direction. And a second guide portion that forms a guide groove extending in the longitudinal direction. The guide groove of the first guide portion, the spiral groove of the intermediate spiral portion, and the guide groove of the second guide portion are connected without a step. Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body straddles the intermediate spiral portion between the first guide portion and the second guide portion. It is guided following the spiral groove or the front guide groove.
As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.

In the damper according to the embodiment of the present invention, the linear motion shaft includes a first spiral portion that forms the spiral groove in order along the longitudinal direction, an intermediate guide portion that forms a guide groove extending in the longitudinal direction, and the spiral groove. A second spiral portion to be formed, the spiral groove of the first spiral portion, the guide groove of the intermediate guide portion, and the spiral groove of the second spiral portion are connected without a step, and the linear motion body and the Corresponding to relative displacement when the rotating body is relatively displaced in the longitudinal direction, the rotating body straddles the intermediate guide portion between the first spiral portion and the second spiral portion, or the spiral groove or the Guided along the guide groove.
With the configuration of the above-described embodiment, the linear motion shaft forms the first spiral portion that forms the spiral groove in order along the longitudinal direction, the intermediate guide portion that forms the guide groove extending in the longitudinal direction, and the spiral groove. A second spiral portion. The spiral groove of the first spiral portion, the guide groove of the intermediate guide portion, and the spiral groove of the second spiral portion are connected without a step. Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body straddles the intermediate guide portion between the first spiral portion and the second spiral portion. It is guided following the spiral groove or the guide groove.
As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.

The damper according to the embodiment of the present invention has a first spiral portion provided with a spiral groove, which is a spiral groove having a first lead along the longitudinal direction on the outer peripheral surface, and a spiral groove bottom diameter of the spiral groove. A first linear motion shaft that is a linear motion shaft having a first cylindrical portion that forms a cylinder having an outer diameter, and a cylinder having an outer diameter that matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction. A second linear motion shaft that is a linear motion shaft having a second cylindrical portion to be formed and a second spiral portion provided with a spiral groove that is a spiral groove having a second lead along the longitudinal direction; The first linear motion shaft and the second linear motion shaft are fixed in parallel with each other so that the spiral portion and the second cylindrical portion are parallel and the first cylindrical portion and the second spiral portion are parallel. A linear motion shaft frame, a first rotational body which is a rotational body guided following the spiral groove of the first linear motion shaft, and the spiral groove of the second linear motion shaft A second rotating body which is a rotating body guided by copying, and a rotating body frame which rotatably supports the first rotating body and the second rotating body, and the linear motion shaft frame and the A first state in which the first rotating body is guided along the spiral groove of the first spiral portion and the second rotating body corresponding to the relative displacement when the rotating body frame is relatively displaced in the longitudinal direction. Alternately repeat the second state guided along the spiral groove of the second spiral portion,
With the configuration of the above-described embodiment, the first linear movement shaft is provided with a first spiral portion provided with a spiral groove that is a spiral groove having a first lead along the longitudinal direction on the outer peripheral surface, and the spiral of the spiral groove. It is a linear motion shaft having a first cylindrical portion that forms a cylinder having an outer diameter that matches the groove bottom diameter. A spiral groove having a second cylinder portion forming a cylinder having an outer diameter that coincides with the spiral groove bottom diameter of the spiral groove along the longitudinal direction and a second lead along the longitudinal direction. It is a linear motion axis | shaft which has the 2nd spiral part provided with the spiral groove which is. The linear motion shaft frame is configured such that the first linear motion shaft and the second linear motion shaft are connected to each other such that the first spiral portion and the second cylindrical portion are in parallel and the first cylindrical portion and the second spiral portion are in parallel. The longitudinal direction is fixed in parallel. The first rotating body is guided along the spiral groove of the first linear motion shaft. The second rotating body is guided following the spiral groove of the second linear motion shaft. A rotating body frame rotatably supports the first rotating body and the second rotating body. When the linear motion shaft frame and the rotating body frame are relatively displaced in the longitudinal direction, the first rotating body is guided along the spiral groove of the first spiral portion corresponding to the relative displacement. The state and the second state in which the second rotating body is guided along the spiral groove of the second spiral portion are alternately repeated.
As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.

The damper according to the embodiment of the present invention follows a linear motion shaft that is a shaft body provided with a spiral groove that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface, and the spiral groove. A rotating body to be guided, an additional rotating member rotatable in synchronization with the rotating body, an electromagnetic clutch capable of detaching rotation of the rotating body and rotation of the additional rotating member, the rotating body, and the additional rotation A frame that rotatably supports the member.
With the configuration of the above embodiment, the linear motion shaft is a shaft body provided with a spiral groove that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface. The rotating body is guided along the spiral groove. The additional rotating member can rotate in synchronization with the rotating body. The electromagnetic clutch is detachable from the rotation of the rotating body and the rotation of the additional rotating member. A frame rotatably supports the rotating body and the additional rotating member.
As a result, when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body rotates, and the reaction force when the linear moving shaft and the rotating body are relatively displaced changes corresponding to the relative displacement. To do.

  In order to achieve the above object, the seismic isolation mechanism according to the present invention is imitated by a linear motion shaft that is a shaft body provided with a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface and the spiral groove. A damper having a rotating body to be guided and a frame that rotatably supports the rotating body, and a pair of connecting portions that are relatively displaced in accordance with the shaking of the structure, the linear motion shaft and the frame are connected to each other. A pair of connecting members, and the ratio of the linear displacement of the linear motion shaft to the rotational displacement of the rotating body changes in response to the swing when the structure swings; did.

According to the configuration of the present invention, the linear motion shaft is provided with a spiral groove having a predetermined lead along the longitudinal direction. The rotating body is guided along the spiral groove. A frame rotatably supports the rotating body. A pair of connecting members connect the linear motion shaft and the frame to a pair of connecting portions that are relatively displaced as the structure is shaken. When the structure shakes, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking.
As a result, when the structure is shaken, the rotating body is rotated, and a reaction force when the linear movement shaft and the rotating body are relatively displaced changes corresponding to the shaking of the structure.

  Below, the seismic isolation mechanism which concerns on embodiment of this invention is demonstrated. The present invention includes any of the embodiments described below, or a combination of two or more of them.

In the seismic isolation mechanism according to the embodiment of the present invention, the linear motion shaft includes the first spiral portion forming the spiral groove having the first lead in order along the longitudinal direction and the spiral groove having the second lead. A second spiral portion to be formed, wherein the spiral groove of the first spiral portion and the spiral groove of the second spiral portion are connected without a step, and the rotating body includes the first spiral portion and the second spiral The rotating body is guided along one of the spiral grooves of the first spiral part or the second spiral part when the structure does not swing and is guided along the spiral groove between the part and the structure. The rotating body is guided along the spiral groove between the first spiral portion and the second spiral portion in response to the swing when
According to the configuration of the above-described embodiment, the linear motion shaft has a first spiral portion that forms the spiral groove having the first lead in order along the longitudinal direction and a second spiral that forms the spiral groove having the second lead. Part. The spiral groove of the first spiral portion and the spiral groove of the second spiral portion are connected without a step. The rotating body is guided along the spiral groove between the first spiral portion and the second spiral portion. When the structure does not shake, the rotating body is guided along the spiral groove of one of the first spiral portion and the second spiral portion. When the structure swings, the rotating body is guided along the spiral groove between the first spiral portion and the second spiral portion in response to the swing.
As a result, the reaction force at the time of relative displacement between the linear motion shaft and the rotating body changes corresponding to the shaking of the structure.

In the seismic isolation mechanism according to the embodiment of the present invention, the linear motion shaft forms the spiral groove having an intermediate lead and the first spiral portion forming the spiral groove having the first lead in order along the longitudinal direction. An intermediate spiral portion and a second spiral portion forming the spiral groove having a second lead, the spiral groove of the first spiral portion, the spiral groove of the intermediate spiral portion, and the second spiral portion. When the spiral groove is connected to the spiral groove without any step and the structure does not swing, the rotating body is guided following the spiral groove of the intermediate spiral portion, and when the structure swings, the rotating body corresponds to the swing. The first spiral portion and the second spiral portion are guided along the spiral groove across the intermediate spiral portion.
According to the configuration of the above-described embodiment, the linear motion shaft has a first spiral portion that forms the spiral groove having a first lead in order along the longitudinal direction, and an intermediate spiral portion that forms the spiral groove having an intermediate lead. And a second spiral portion forming the spiral groove having a second lead. The spiral groove of the first spiral portion, the spiral groove of the intermediate spiral portion, and the spiral groove of the second spiral portion are connected without a step. When the structure does not shake, the rotating body is guided along the spiral groove of the intermediate spiral portion. When the structure shakes, the rotating body is guided along the spiral groove across the intermediate spiral between the first spiral and the second spiral in response to the swing.
As a result, when the structure is shaken, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the shaking of the structure.

In the seismic isolation mechanism according to the embodiment of the present invention, when the lead changes from the first lead to the second lead through the intermediate lead along the longitudinal direction, and the structure does not shake, the rotating body The rotating body is guided along the spiral groove of the intermediate lead, and the rotating body moves between the spiral groove of the first lead and the spiral groove of the second lead in response to the swing when the structure swings. Guided along the spiral groove across the spiral groove of the intermediate lead.
According to the configuration of the above embodiment, the lead changes from the first lead to the second lead via the intermediate lead along the longitudinal direction. When the structure does not swing, the rotating body is guided following the spiral groove of the intermediate lead, and when the structure swings, the rotating body corresponds to the swing and the spiral groove of the first lead and the first lead. Guided along the spiral groove across the spiral groove of the intermediate lead between the spiral groove of two leads.
As a result, when the structure is shaken, a reaction force when the linear motion shaft and the rotating body are relatively displaced changes continuously corresponding to the shaking of the structure.

The seismic isolation mechanism according to an embodiment of the present invention includes: a cylindrical portion that forms a cylinder having an outer diameter in which the linear motion shaft sequentially matches a spiral groove bottom diameter of the spiral groove along the longitudinal direction; and the spiral groove When the structure does not shake, the rotating body is guided following one of the cylinder of the cylindrical part or the spiral groove of the spiral part, and the structure is shaken Corresponding to the shaking, the rotating body is guided between the cylindrical portion and the spiral portion following the spiral groove or the cylinder.
According to the configuration of the above-described embodiment, a cylindrical portion that forms a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction, and a spiral portion that forms the spiral groove Have When the structure does not shake, the rotating body is guided along one of the cylinder of the cylindrical portion or the spiral groove of the spiral portion. When the structure shakes, the rotating body is guided between the cylindrical portion and the spiral portion following the spiral groove or the cylinder in response to the swing.
As a result, when the structure is shaken, a reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the shake of the structure.

The seismic isolation mechanism according to an embodiment of the present invention includes a first cylindrical portion that forms a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction; An intermediate spiral portion that forms a spiral groove and a second cylindrical portion that forms a cylinder having an outer diameter that matches the bottom diameter of the spiral groove of the spiral groove, and the rotating body does not move when the structure does not shake The rotating body is guided following the spiral groove of the spiral portion, and the rotating body straddles the intermediate spiral portion between the first cylindrical portion and the second cylindrical portion in response to the swing when the structure swings. It is guided following the spiral groove or the cylinder.
With the configuration of the above embodiment, the first cylindrical portion and the spiral groove that form a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction are formed. An intermediate spiral portion and a second cylindrical portion forming a cylinder having an outer diameter corresponding to a spiral groove bottom diameter of the spiral groove. When the structure does not shake, the rotating body is guided along the spiral groove of the intermediate spiral portion. When the structure shakes, the rotating body is guided along the spiral groove or the cylinder across the intermediate spiral portion between the first cylindrical portion and the second cylindrical portion in response to the swing.
As a result, when the structure is shaken, a reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the shake of the structure.

The seismic isolation mechanism according to an embodiment of the present invention includes a first cylindrical portion that forms a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction; An intermediate spiral portion that forms a spiral groove and a second cylindrical portion that forms a cylinder having an outer diameter that matches the bottom diameter of the spiral groove of the spiral groove, and the rotating body does not move when the structure does not shake The rotating body is guided following the cylinder of the cylindrical portion, and the rotating body straddles the intermediate cylindrical portion between the first helical portion and the second helical portion in response to the shaking when the structure shakes. It is guided along the groove or the cylinder.
With the configuration of the above embodiment, the first cylindrical portion and the spiral groove that form a cylinder having an outer diameter in which the linear motion shaft sequentially matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction are formed. An intermediate spiral portion and a second cylindrical portion forming a cylinder having an outer diameter corresponding to a spiral groove bottom diameter of the spiral groove. When the structure does not shake, the rotating body is guided following the cylinder of the intermediate cylindrical portion. When the structure swings, the rotating body is guided along the spiral groove or the cylinder across the intermediate cylindrical portion between the first spiral portion and the second spiral portion in response to the swing.
As a result, when the structure is shaken, a reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the shake of the structure.

The seismic isolation mechanism according to an embodiment of the present invention includes a guide portion that forms a guide groove in which the linear motion shaft extends in the longitudinal direction in order along the longitudinal direction, and a spiral portion that forms the spiral groove. When the guide groove of the guide portion and the spiral groove of the spiral portion are connected without a step, and the structure does not shake, the rotating body is one of the guide groove of the guide portion or the spiral groove of the spiral portion. When the structure shakes, the rotating body is guided between the guide portion and the spiral portion so as to follow the spiral groove or the guide groove.
According to the configuration of the above embodiment, the linear motion shaft has a guide portion that forms a guide groove extending in the longitudinal direction in order along the longitudinal direction and a spiral portion that forms the spiral groove. The guide groove of the guide portion and the spiral groove of the spiral portion are connected without a step. When the structure does not shake, the rotating body is guided following one of the guide groove of the guide portion or the spiral groove of the spiral portion. When the structure shakes, the rotating body is guided between the guide portion and the spiral portion along the spiral groove or the guide groove in response to the swing.
As a result, when the structure is shaken, a reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the shake of the structure.

The seismic isolation mechanism according to an embodiment of the present invention includes: a first guide member that forms a guide groove in which the linear movement shaft extends in the longitudinal direction in order along the longitudinal direction; an intermediate spiral portion that forms the spiral groove; A second guide part forming a guide groove extending in the longitudinal direction along the longitudinal direction, the guide groove of the first guide part, the spiral groove of the intermediate spiral part, and the guide of the second guide part The rotating body is guided following the spiral groove of the spiral portion when the groove is connected without a step and the structure does not swing, and the rotating body corresponds to the swing when the structure swings. Guided along the guide groove or the spiral groove across the intermediate spiral part between the part and the second guide part.
According to the configuration of the above-described embodiment, the linear motion shaft extends in the longitudinal direction along the longitudinal direction, the first guide member that forms a longitudinally extending guide groove, the intermediate spiral portion that forms the spiral groove, and the longitudinal direction. And a second guide portion that forms a guide groove extending in the longitudinal direction. The guide groove of the first guide portion, the spiral groove of the intermediate spiral portion, and the guide groove of the second guide portion are connected without a step. When the structure does not shake, the rotating body is guided along the spiral groove of the spiral portion. The rotating body is guided along the guide groove or the spiral groove across the intermediate spiral portion between the first guide portion and the second guide portion in response to the swing when the structure swings. .
As a result, when the structure is shaken, a reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the shake of the structure.

In the seismic isolation mechanism according to an embodiment of the present invention, the linear motion shaft includes a first spiral portion that forms the spiral groove in order along the longitudinal direction, an intermediate guide portion that forms a guide groove extending in the longitudinal direction, and the A second spiral part that forms a spiral groove, and the spiral groove of the first spiral part, the guide groove of the intermediate guide part, and the spiral groove of the second spiral part are connected without a step, and the structure The rotating body is guided along the guide groove of the intermediate guide portion when the swing does not swing, and the rotating body corresponds to the swing when the structure swings, and the rotating body includes the first spiral portion and the second spiral portion. In between, it guides following the spiral groove or the guide groove across the intermediate guide part.
With the configuration of the above-described embodiment, the linear motion shaft forms the first spiral portion that forms the spiral groove in order along the longitudinal direction, the intermediate guide portion that forms the guide groove extending in the longitudinal direction, and the spiral groove. A second spiral portion. The spiral groove of the first spiral portion, the guide groove of the intermediate guide portion, and the spiral groove of the second spiral portion are connected without a step. When the structure does not shake, the rotating body is guided along the guide groove of the intermediate guide portion. The rotating body is guided along the spiral groove or the guide groove across the intermediate guide portion between the first spiral portion and the second spiral portion in response to the swing when the structure swings. .
As a result, when the structure is shaken, a reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the shake of the structure.

  A seismic isolation mechanism according to an embodiment of the present invention includes a first spiral portion provided with a spiral groove which is a spiral groove having a first lead along a longitudinal direction on an outer peripheral surface, and a spiral groove bottom of the spiral groove. A first linear motion shaft that is a linear motion shaft having a first cylindrical portion that forms a cylinder having an outer diameter that matches the diameter, and an outer diameter that matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction. A second linear motion shaft that is a linear motion shaft having a second cylindrical portion that forms a cylindrical cylinder and a second spiral portion provided with a spiral groove that is a spiral groove having a second lead along the longitudinal direction; The first linear axis and the second linear axis are parallel to each other so that the first spiral part and the second cylindrical part are parallel and the first cylindrical part and the second spiral part are parallel. A linear motion shaft frame to be fixed, a first rotational body that is a rotational body guided along the spiral groove of the first linear motion shaft, and the spiral of the second linear motion shaft A second rotating body which is a rotating body guided in accordance with the above, a damper having a rotating body frame which rotatably supports the first rotating body and the second rotating body, and an interlayer between the structures A pair of connecting members that connect the linear motion shaft frame and the rotating body frame to a pair of connecting portions that are relatively displaced, respectively, and the first rotation corresponding to the shaking when the structure shakes A first state in which the body is guided along the spiral groove of the first spiral portion and a second state in which the second rotating body is guided along the spiral groove of the second spiral portion are alternately repeated. It was supposed to be.

With the configuration of the above-described embodiment, the first linear movement shaft is provided with a first spiral portion provided with a spiral groove that is a spiral groove having a first lead along the longitudinal direction on the outer peripheral surface, and the spiral of the spiral groove. It is a linear motion shaft having a first cylindrical portion that forms a cylinder having an outer diameter that matches the groove bottom diameter. A spiral groove having a second cylinder portion forming a cylinder having an outer diameter that coincides with the spiral groove bottom diameter of the spiral groove along the longitudinal direction and a second lead along the longitudinal direction. It is a linear motion axis | shaft which has the 2nd spiral part provided with the spiral groove which is. The linear motion shaft frame includes the first linear motion shaft and the second linear motion so that the first spiral portion and the second cylindrical portion are in parallel and the first cylindrical portion and the second spiral portion are in parallel. The shafts are fixed with their longitudinal directions parallel to each other. The first rotating body is guided along the spiral groove of the first linear motion shaft. The second rotating body is guided along the spiral groove of the second linear movement shaft. A frame rotatably supports the first rotating body and the second rotating body. A pair of connecting members connect the fixed frame and the frame to a pair of connecting locations that are relatively displaced as the structure is shaken. When the structure swings, the first rotating body is guided along the spiral groove of the first spiral portion in response to the swing, and the second rotating body is the spiral of the second spiral portion. The second state guided along the groove is repeated alternately.
As a result, when the structure is shaken, a reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the shake of the structure.

  The seismic isolation mechanism according to the embodiment of the present invention includes a linear motion shaft that is a shaft body provided with a spiral groove that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface, and the spiral groove. The rotating body guided in accordance with the rotating body, the additional rotating member rotatable in synchronization with the rotating body, the electromagnetic clutch capable of detaching the rotation of the rotating body and the rotation of the additional rotating member, the rotating body, and the additional rotating member And a pair of connecting members for connecting the linear motion shaft and the frame to a pair of connecting portions that are relatively displaced according to the shaking of the structure, The rotation of the rotating body and the rotation of the additional rotating member are separated when the structure is not shaken, and the electromagnetic clutch is operated when the structure is shaken to correspond to the relative displacement. And the additional rotating member rotate synchronously It was the thing.

With the configuration of the above embodiment, the linear motion shaft is a shaft body provided with a spiral groove that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface. The rotating body is guided along the spiral groove. The additional rotating member can rotate in synchronization with the rotating body. The electromagnetic clutch is detachable from the rotation of the rotating body and the rotation of the additional rotating member. A frame rotatably supports the rotating body and the additional rotating member. A pair of connecting members connect the linear motion shaft and the frame to a pair of connecting portions that are relatively displaced as the structure is shaken. When the structure does not shake, the rotation of the rotating body and the rotation of the additional rotating member are separated. When the structure is shaken, the electromagnetic clutch is operated, and the rotating body and the additional rotating member rotate in synchronization with the relative displacement.
As a result, when the structure is shaken, when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body and the additional rotating member rotate, and when the linear moving shaft and the rotating body are relatively displaced. The reaction force changes in response to the shaking of the structure.

The seismic isolation mechanism according to the embodiment of the present invention includes a linear motion shaft and a linear motion shaft that are shaft bodies provided with a spiral groove that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface. A damper having a rotating body guided along the spiral groove and a frame that rotatably supports the rotating body;
A pair of connecting members for connecting the linear motion shaft of the damper and the frame to a pair of connecting portions that are relatively displaced according to the shaking of the structure, respectively, and the connecting member swings the structure Sometimes, the angle formed by the imaginary line connecting the pair of connecting points and the main displacement direction of the structure can be changed corresponding to the shaking.
With the configuration of the above embodiment, the damper can freely rotate the linear motion shaft provided with a spiral groove having a predetermined lead along the longitudinal direction, the rotating body guided along the spiral groove, and the rotating body. And a supporting frame. A pair of connecting members connect the linear motion shaft of the damper and the frame to a pair of connecting locations that are relatively displaced as the structure shakes. When the connecting member shakes the structure, the angle formed by the imaginary line connecting the pair of connecting portions and the main displacement direction of the structure can be changed corresponding to the shaking.
As a result, when the structure is shaken, if the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body is rotated, and a reaction force is generated when the linear moving shaft and the rotating body are relatively displaced. It changes in response to shaking of the body.

In the seismic isolation mechanism according to the embodiment of the present invention, when the structure swings, one of the pair of connecting members moves along the structural member of the structure in response to the swing. It is possible to change the angle formed between the imaginary line connecting the connection points and the main displacement direction between the layers of the structure.
According to the configuration of the above-described embodiment, when the structure shakes, one of the pair of connecting members moves along the structural member of the structure in response to the swing and connects the pair of connecting points. The angle between the line and the main direction of displacement between the layers of the structure can be changed.
As a result, when the structure is shaken, if the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body is rotated, and a reaction force is generated when the linear moving shaft and the rotating body are relatively displaced. It changes in response to shaking of the body.

As described above, the damper according to the present invention has the following effects due to its configuration.
The rotating body is guided along the spiral groove having the predetermined lead provided along the longitudinal direction on the linear motion shaft, and the rotational body is guided to rotate freely. When the rotary body is relatively displaced in the longitudinal direction, the rotary body is rotated, and the ratio of the linear motion displacement of the linear motion shaft and the rotational displacement of the rotary body is changed corresponding to the relative displacement. The reaction force at the time of relative displacement between the linear motion shaft and the rotating body changes corresponding to the relative displacement.
In addition, the linear motion shaft has two types of spiral grooves along the longitudinal direction, and when the relative displacement is made, the rotating body is guided along the two types of spiral grooves. The reaction force at the time of relative displacement with the rotating body changes corresponding to the relative displacement.
Further, the linear motion shaft has three types of the spiral grooves along the longitudinal direction, and when the relative displacement is made, the rotating body is guided along the three types of spiral grooves. The reaction force at the time of relative displacement with the rotating body changes corresponding to the relative displacement.
In addition, the linear motion shaft has the spiral groove having the lead that changes along the longitudinal direction, and when the relative displacement is made, the rotating body is guided along the spiral groove. A reaction force at the time of relative displacement with the rotating body continuously changes corresponding to the relative displacement.
Further, the linear motion shaft has the cylinder and the spiral groove along the longitudinal direction, and when the relative displacement is made, the rotating body is guided along the cylinder or the spiral groove. The reaction force at the time of relative displacement between the rotating body and the rotating body changes corresponding to the relative displacement.
Further, the linear motion shaft has the cylinder, the spiral groove, and the cylinder along the longitudinal direction, and when the relative displacement is made, the rotating body is guided along the spiral groove or the cylinder. The reaction force when the moving shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.
In addition, the linear motion shaft has the spiral groove, the cylinder, and the spiral groove along the longitudinal direction, and when the relative displacement is performed, the rotating body is guided following the cylinder or the spiral groove. A reaction force at the time of relative displacement between the linear motion shaft and the rotating body changes corresponding to the relative displacement.
Further, the linear motion shaft has the guide groove and the spiral groove in the longitudinal direction along the longitudinal direction, and when the relative displacement is made, the rotating body is guided following the guide groove or the spiral groove. Therefore, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.
In addition, the linear motion shaft has the guide groove, the spiral groove, and the guide groove in the longitudinal direction along the longitudinal direction, and the relative displacement causes the rotating body to be guided along the spiral groove or the guide groove. As a result, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the relative displacement.
Further, the linear motion shaft has the spiral groove, the guide groove, and the spiral groove in the longitudinal direction along the longitudinal direction, and when the relative movement is made, the rotating body is guided along the guide groove or the spiral groove. Since it did in this way, the reaction force at the time of carrying out relative displacement of the said linear motion shaft and the said rotary body changes according to a relative displacement.
A pair of the linear motion shafts are arranged in parallel, one linear motion shaft has the spiral groove and the cylinder, and the other linear motion shaft has the cylinder and the spiral groove. When the rotating body is relatively displaced in the longitudinal direction, the first rotating body is guided along the spiral groove of one of the linear motion shafts in correspondence with the relative displacement, and the second rotating body is Since the state of being guided along the spiral groove of the other linear motion shaft is alternately repeated, the reaction force when the linear motion shaft and the rotating body are relatively displaced corresponds to the relative displacement. Change.
The rotating body is guided along the spiral groove having a predetermined lead provided along the longitudinal direction on the linear motion shaft, and the rotary body is rotatably guided. When the rotary body is relatively displaced in the longitudinal direction, the rotary body is rotated, and the electromagnetic clutch can be attached to and detached from the linear motion shaft and the rotary body in response to the relative displacement. The reaction force at the time of relative displacement with the rotating body changes corresponding to the relative displacement.
Therefore, a damper suitable for optimizing the seismic isolation / damping performance with a simple configuration can be provided.

As described above, the seismic isolation mechanism according to the present invention has the following effects due to its configuration.
The rotating body is guided along the spiral groove having the predetermined lead provided along the longitudinal direction on the linear motion shaft, and the rotating body is guided to rotate freely. And the rotary body rotates, and the ratio of the linear displacement of the linear motion shaft to the rotational displacement of the rotary body changes corresponding to the relative displacement. The reaction force at the time of relative displacement changes corresponding to the shaking of the structure.
Further, the linear motion shaft has two types of the spiral grooves along the longitudinal direction, and when the relative displacement is made, the rotating body is guided along the two types of the spiral grooves, so that the structure shakes. Sometimes the reaction force at the time of relative displacement between the linear motion shaft and the rotating body changes corresponding to the shaking of the structure.
In addition, the linear motion shaft has three types of the spiral grooves along the longitudinal direction, and when the relative displacement is made, the rotating body is guided along the three types of spiral grooves. In addition, the reaction force when the linear movement shaft and the rotating body are relatively displaced changes corresponding to the shaking of the structure.
In addition, the linear motion shaft has the spiral groove having a lead that changes along the longitudinal direction, and when the relative displacement is made, the rotating body is guided along the spiral groove. The reaction force at the time of relative displacement between the linear motion shaft and the rotating body continuously changes corresponding to the shaking of the structure.
Further, the linear motion shaft has the cylinder and the spiral groove along the longitudinal direction, and when the relative displacement is made, the rotating body is guided following the cylinder or the spiral groove, so that the structure shakes. Sometimes the reaction force at the time of relative displacement between the linear motion shaft and the rotating body changes corresponding to the shaking of the structure.
Further, the linear motion shaft has the cylinder, the spiral groove, and the cylinder along the longitudinal direction, and when the relative displacement is made, the rotating body is guided following the spiral groove or the cylinder. When the body shakes, the reaction force when the linear movement shaft and the rotating body are relatively displaced changes corresponding to the shaking of the structure.
In addition, the linear motion shaft has the spiral groove, the cylinder, and the spiral groove along the longitudinal direction, and when the relative displacement is performed, the rotating body is guided following the cylinder or the spiral groove. When the structure is shaken, a reaction force when the linear movement shaft and the rotating body are relatively displaced changes in response to the shake of the structure.
Further, the linear motion shaft has the guide groove and the spiral groove in the longitudinal direction along the longitudinal direction, and when the relative displacement is made, the rotating body is guided following the guide groove or the spiral groove. Therefore, when the structure shakes, the reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the shake of the structure.
In addition, the linear motion shaft has the guide groove, the spiral groove, and the guide groove in the longitudinal direction along the longitudinal direction, and the relative displacement causes the rotating body to be guided along the spiral groove or the guide groove. Therefore, when the structure is shaken, the reaction force when the linear movement shaft and the rotating body are relatively displaced changes corresponding to the shake of the structure.
Further, the linear motion shaft has the spiral groove, the guide groove, and the spiral groove in the longitudinal direction along the longitudinal direction, and when the relative movement is made, the rotating body is guided along the guide groove or the spiral groove. Since it did in this way, when a structure shakes, the reaction force at the time of relative displacement of the said linear motion shaft and the said rotary body changes corresponding to the shake of a structure.
A pair of the linear motion shafts are arranged in parallel, one linear motion shaft has the spiral groove and the cylinder, and the other linear motion shaft has the cylinder and the spiral groove. When the rotary body is relatively displaced in the longitudinal direction, the first rotary body is guided along the spiral groove of one of the linear motion shafts in correspondence with the relative displacement, and the second rotary body Is alternately repeated in the state of being guided along the spiral groove of the other linear motion shaft, so that when the structure is shaken, the reaction when the relative displacement between the linear motion shaft and the rotating body is caused. The force changes in response to the shaking of the structure.
The rotating body is guided along the spiral groove having a predetermined lead provided along the longitudinal direction on the linear motion shaft, and the rotary body is guided to rotate freely. When the body is relatively displaced in the longitudinal direction, the rotating body rotates, and the electromagnetic clutch can be attached to and detached from the linear motion shaft and the rotating body in response to the shaking of the structure. The reaction force when the moving shaft and the rotating body are relatively displaced changes corresponding to the shaking of the structure.
The pair of connecting members connect the linear motion shaft of the damper and the frame to a pair of connecting portions that are displaced relative to each other as the structure is shaken, to cope with the shaking when the structure is shaken. Since the angle formed by the imaginary line connecting the pair of connecting points and the main displacement direction between the layers of the structure is changed, the linear motion shaft and the rotating body are relatively moved when the structure is shaken. The reaction force at the time of displacement changes corresponding to the shaking of the structure.
Also, when one of the pair of connecting members is moved along the structure to change the angle between the imaginary line and the main displacement direction of the structure, when the structure shakes A reaction force at the time of relative displacement between the linear motion shaft and the rotating body changes corresponding to the shaking of the structure.

It is sectional drawing of the damper which concerns on the 1st-4th embodiment of this invention. It is a perspective sectional view of the damper concerning the 1st-4th embodiment of the present invention. It is a system diagram of a viscous damper with a spring concerning the first to fourth embodiments of the present invention. It is a fragmentary figure of the damper concerning a first embodiment of the present invention. It is a fragmentary perspective view of the damper concerning a first embodiment of the present invention. It is a fragmentary figure of the damper concerning a second embodiment of the present invention. It is a fragmentary perspective view of the damper concerning a 2nd embodiment of the present invention. It is a fragmentary figure of the damper concerning a third embodiment of the present invention. It is a fragmentary perspective view of the damper concerning a 3rd embodiment of the present invention. It is a fragmentary figure of the damper concerning a 4th embodiment of the present invention. It is a fragmentary perspective view of the damper concerning a 4th embodiment of the present invention. It is a front view of the damper concerning a 5th embodiment of the present invention. It is sectional drawing of the viscous damper which concerns on 6th embodiment of this invention. It is a fragmentary figure of the damper concerning a 6th embodiment of the present invention. It is the conceptual diagram 1 which shows the application of the damper which concerns on the 1st-6th embodiment of this invention. It is the conceptual diagram 2 which shows the application of the damper which concerns on the 1st-6th embodiment of this invention. It is the conceptual diagram 3 which shows the application of the damper which concerns on the 1st-6th embodiment of this invention. FIG. 9 is a fourth conceptual diagram showing an application of the damper according to the first to sixth embodiments of the present invention. It is the conceptual diagram No. 1 of the seismic isolation mechanism which concerns on 7th embodiment of this invention. It is the conceptual diagram No. 2 of the seismic isolation mechanism which concerns on 7th embodiment of this invention. It is the conceptual diagram No. 3 of the seismic isolation mechanism which concerns on 7th embodiment of this invention. It is a conceptual diagram of the numerical model which concerns on embodiment of this invention. It is the calculation result 1 of the numerical model concerning embodiment of this invention. It is the calculation result 2 of the numerical model concerning embodiment of this invention. It is the calculation result No. 3 of the numerical model concerning embodiment of this invention. It is the calculation result 4 of the numerical model concerning embodiment of this invention. It is the calculation result No. 5 of the numerical model concerning embodiment of this invention. It is operation | movement explanatory drawing 1 of the seismic isolation mechanism which concerns on embodiment of this invention. It is operation | movement explanatory drawing 2 of the seismic isolation mechanism which concerns on embodiment of this invention. FIG. 6 is an explanatory diagram 3 of the operation of the seismic isolation mechanism according to the embodiment of the present invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

First, dampers according to the first to fourth embodiments of the present invention will be described.
FIG. 1 is a cross-sectional view of a damper according to first to fourth embodiments of the present invention. FIG. 2 is a perspective sectional view of the damper according to the first to fourth embodiments of the present invention. FIG. 3 is a system diagram of the spring loaded viscous damper according to the first to fourth embodiments of the present invention.

The damper 100 according to the first to fourth embodiments of the present invention includes a linear motion shaft 110, a rotating body 120, and a frame 130.
The damper 100 according to the first to fourth embodiments of the present invention may include a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous body 140.
The damper 100 according to the first to fourth embodiments of the present invention may include a linear motion shaft 110, a rotating body 120, a frame 130, and an additional rotating member 150.
The damper 100 according to the first to fourth embodiments of the present invention may include a linear motion shaft 110, a rotating body 120, a frame 130, a viscous body 140, and an additional rotating member 150.

The linear motion shaft 110 is a shaft body provided with a spiral groove G which is a spiral groove having a predetermined lead P along the longitudinal direction on the outer peripheral surface.
The spiral groove G is provided in part or all of the outer peripheral surface of the linear motion shaft 110.
One or a plurality of spiral grooves G are provided on the outer peripheral surface of the linear motion shaft 110.
The structure of the spiral groove G will be described later for each of the dampers 100 according to the first to fourth embodiments.

The rotating body 120 is a mechanism guided along the spiral groove G.
For example, the rotating body 120 performs a spiral motion relative to the linear motion shaft 110 following the spiral groove G provided on the outer peripheral surface of the linear motion shaft 110.
When the linear motion shaft 110 is moved in the longitudinal direction while restricting the movement of the rotator 120 in the longitudinal direction, the rotator 120 rotates.
The rotating body 120 may be composed of a rotating body main body 121 and a rotating body ball 122.
The rotating body ball 122 is held by the rotating body main body 121 and guided to the spiral groove G of the linear motion shaft 110.
A combination structure of the rotator main body 121 and the rotator ball 122 will be described later for each of the dampers 100 according to the first to fourth embodiments.

The frame 130 is a structure that rotatably supports the rotating body 120.
The frame 130 includes a frame main body 131 and a rotating body bearing 132.
The rotator bearing 132 supports the rotator 120 on the basis of the frame main body 131 so as to restrain the movement of the linear motion shaft in the longitudinal direction and to rotate freely.

When the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the rotary body is rotationally displaced according to the linear motion displacement of the linear motion shaft 110.
When the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the ratio between the linear motion displacement of the linear motion shaft 110 and the rotational displacement of the rotational body 120 changes corresponding to the relative displacement. .
A structure for changing the ratio of the linear displacement of the linear motion shaft 110 and the rotational displacement of the rotating body 120 corresponding to the relative displacement will be described later.

The viscous body 140 is a viscous fluid that fills the gap between the rotating body 120 and the frame 130.
The viscous body 140 may be filled in a gap between the additional rotating member 150 and the frame 130 described later.
The damper filled with the viscous body 140 is referred to as a viscous damper.

The additional rotating member 150 is a member that rotates in synchronization with the rotating body 120.
The additional rotating member 150 may be fixed to the rotating body 120 so that their rotational axes coincide.
The additional rotating member bearing 133 may rotatably support the additional rotating member 150 based on the frame main body 131.

FIG. 3 shows a mass system model when a tuned viscous mass damper in which a viscous mass damper and an elastic body are directly connected is fixed to a structure.
Here, mr is an apparent inertial mass due to a structure in which the linear motion shaft 110 and the rotary body 120 or the linear motion shaft 110, the rotary body 120, and the additional rotary member 150 are combined.
c is an apparent attenuation coefficient due to the structure of the linear motion shaft 110 and the viscous body 140.
Kb is an elastic coefficient related to the displacement along the longitudinal direction of the elastic body.
m is the apparent mass of the location where the tuned viscous mass damper of the structure is attached.
K is the apparent elastic modulus of the location where the tuned viscous mass damper of the structure is attached.

  Below, the structure of the damper 100 which concerns on the 1st-4th embodiment of this invention is demonstrated separately.

The structure of the damper 100 which concerns on 1st embodiment of this invention is demonstrated based on a figure.
FIG. 4 is a partial view of the damper according to the first embodiment of the present invention. FIG. 5 is a partial perspective view of the damper according to the first embodiment of the present invention.

The damper 100 according to the first embodiment of the present invention includes a linear motion shaft 110, a rotating body 120, and a frame 130.
The damper 100 according to the first embodiment of the present invention may include a linear motion shaft 110, a rotating body 120, a frame 130, a viscous body 140, and an additional rotating member 150.

A linear motion shaft 110 and a rotating body 120 of the damper shown in FIG.
The linear motion shaft 110 is a shaft body provided with a spiral groove G that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The linear motion shaft 110 includes a first spiral portion 111x that forms a spiral groove G having a first lead P1 and a second spiral portion 111y that forms a spiral groove G having a second lead P2 in order along the longitudinal direction. Is done.
The spiral groove G of the first spiral portion 111x and the spiral groove G of the second spiral portion 111y are connected without a step. The first lead P1 and the second lead P2 are different.
FIG. 4A shows a linear motion shaft in which the first lead P1 is smaller than the second lead P2.

The rotating body 120 is a mechanism guided along the spiral groove G.
FIG. 5 shows an example of the structure of the rotating body 120.
The rotating body 120 includes a rotating body main body 121 and a rotating body ball 122.
The rotating body 121 is provided with a through hole having an inner diameter slightly larger than the outer diameter of the linear motion shaft 110.
The rotator main body 121 is provided with a single recess 123 having a curvature substantially matching the radius of the rotator ball 122 on the inner wall of the through hole.
The rotating body ball 122 is fitted in the recess 123.
As a result, the rotating body ball 122 is rotatably supported by fixing the position in the radial direction and the position in the longitudinal direction on the inner wall of the through hole of the rotating body main body 121.

The rotating body 120 may be composed of a rotating body main body 121 and a plurality of rotating body balls 122.
For example, the rotating body 120 includes a rotating body main body 121 and N sets of rotating body balls 122. One set of rotating body balls 122 includes a plurality of rotating body balls 122.
The rotator main body 121 has one recess 123 having a curvature substantially matching the radius of the rotator ball 122 on the inner wall of the through hole, and a plurality of linear grooves 124 scattered in the radial direction and extending along the longitudinal direction. Is provided.
One specific rotating body ball 122 fits into the recess 123.
As a result, one specific rotating body ball 122 is rotatably supported by fixing the radial position and the longitudinal position on the inner wall of the through hole of the rotating body 121.
Except for the specific set of rotating balls 122, the other rotating balls 122 are fitted into a plurality of linear grooves 124, respectively.
As a result, the other rotating body balls 122 except for the specific rotating body ball among the plurality of rotating body balls 122 are fixed in the radial position, and free to move in the longitudinal direction following the long groove, It is supported rotatably.

When the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the rotary body 120 is guided along the spiral groove G between the first spiral portion 111x and the second spiral portion 111y corresponding to the relative displacement. Is done.
When the linear motion shaft 110 moves in the longitudinal direction, the rotating body 120 is rotationally displaced corresponding to the linear motion displacement of the linear motion shaft 110.
When the rotator 120 is positioned at the first spiral portion 111x, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotator 120 corresponds to the first lead P1.
When the rotator 120 is positioned in the second spiral portion 111y, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotator 120 corresponds to the second lead P2.
As a result, when the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the ratio between the linear motion displacement of the linear motion shaft 110 and the rotational displacement of the rotary body 120 changes corresponding to the relative displacement.

The damper linear motion shaft 110 and the rotating body 120 shown in FIGS. 4B and 4C will be described.
The linear motion shaft 110 is a shaft body provided with a spiral groove G that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The linear motion shaft 110 has a first spiral portion 111x that forms a spiral groove G having a first lead P1 in order along the longitudinal direction, an intermediate spiral portion 111m that forms a spiral groove G having an intermediate lead Pm, and a second lead P2. And a second spiral portion 111y that forms a spiral groove G having
The spiral groove G of the first spiral portion 111x, the spiral groove G of the intermediate spiral portion 111m, and the spiral groove G of the second spiral portion 111y are connected without a step.
The first lead P1 and the intermediate lead Pm are different.
The second lead P2 and the intermediate lead Pm are different.
FIG. 4B shows a linear motion shaft in which the first lead P1 and the second lead P2 are smaller than the intermediate lead. The first lead P1 and the second lead P2 may be equal.
FIG. 4C shows a linear motion shaft in which the first lead P1 and the second lead P2 are larger than the intermediate lead. The first lead P1 and the second lead P2 may be equal.

The structure of the rotator 120 is the same as that in the case of FIG.
When the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the rotary body 120 straddles the intermediate spiral portion 111m between the first spiral portion 111x and the second spiral portion 111y corresponding to the relative displacement. Guided along the spiral groove G.
When the linear motion shaft 110 moves in the longitudinal direction, the rotating body 120 is rotationally displaced corresponding to the linear motion displacement of the linear motion shaft 110.
When the rotator 120 is positioned at the first spiral portion 111x, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotator 120 corresponds to the first lead P1.
When the rotator 120 is positioned in the intermediate spiral portion 111m, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotator 120 corresponds to the intermediate lead Pm.
When the rotator 120 is positioned in the second spiral portion 111y, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotator 120 corresponds to the second lead P2.
As a result, when the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the ratio between the linear motion displacement of the linear motion shaft 110 and the rotational displacement of the rotary body 120 changes corresponding to the relative displacement.

  Since the structure of the viscous body 140 and the additional rotating member 150 is the same as that described above, the description thereof is omitted.

The structure of the damper 100 according to the second embodiment of the present invention will be described with reference to the drawings.
FIG. 6 is a partial view of a damper according to the second embodiment of the present invention. FIG. 7 is a partial perspective view of the damper according to the second embodiment of the present invention.

The damper 100 according to the second embodiment of the present invention includes a linear motion shaft 110, a rotating body 120, and a frame 130.
The damper 100 according to the second embodiment of the present invention may include a linear motion shaft 110, a rotating body 120, a frame 130, a viscous body 140, and an additional rotating member 150.

The damper linear motion shaft 110 and the rotating body 120 shown in FIGS. 6A, 6B, and 6C will be described.
The linear motion shaft 110 is a shaft body provided with a spiral groove G that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The lead changes from the first lead P1 to the second lead P2 via the intermediate lead Pm along the longitudinal direction.
The first lead P1 and the intermediate lead Pm are different.
The second lead P2 and the intermediate lead Pm are different.
FIG. 6A shows the second lead from the first lead P1 via the intermediate lead Pm corresponding to the movement of the predetermined lead of the spiral groove G from one end of the linear motion shaft 110 to the other end. P2 shows a linear motion shaft that continuously changes to P2, where the first lead P1 is smaller than the intermediate lead Pm, and the intermediate lead Pm is smaller than the second lead P2.
FIG. 6B shows the second lead from the first lead P1 via the intermediate lead Pm corresponding to the movement of the predetermined lead of the spiral groove G from one end of the linear motion shaft 110 to the other end. It shows a linear movement shaft that continuously changes to P2, with the first lead P1 being smaller than the intermediate lead Pm and the second lead P2 being smaller than the intermediate lead Pm.
FIG. 6C shows the second lead from the first lead P1 through the intermediate lead Pm corresponding to the movement of the predetermined lead of the spiral groove G from one end of the linear motion shaft 110 to the other end. Continuously changing to P2, the first lead P1 is larger than the intermediate lead Pm, and the second lead P2 is a linear axis larger than the intermediate lead Pm.

Since the structure of the rotating body is the same as that of the rotating body of the damper according to the first embodiment, description thereof is omitted.
When the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the rotary body 120 is intermediate between the spiral groove G of the first lead P1 and the spiral groove G of the second lead P2 corresponding to the relative displacement. Guided along the spiral groove G across the spiral groove G of the lead Pm.
When the linear motion shaft 110 moves in the longitudinal direction, the rotating body 120 is rotationally displaced corresponding to the linear motion displacement of the linear motion shaft 110.
When the rotating body 120 is positioned in the spiral portion 111 of the predetermined lead P, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotating body 120 corresponds to the lead P.
As a result, when the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the ratio between the linear motion displacement of the linear motion shaft 110 and the rotational displacement of the rotary body 120 changes corresponding to the relative displacement.

  Since the structure of the viscous body 140 and the additional rotating member 150 is the same as that described above, the description thereof is omitted.

The structure of the damper 100 according to the third embodiment of the present invention will be described with reference to the drawings.
FIG. 8 is a partial view of a damper according to the third embodiment of the present invention. FIG. 9 is a partial perspective view of the damper according to the third embodiment of the present invention.

The damper 100 according to the third embodiment of the present invention includes a linear motion shaft 110, a rotating body 120, and a frame 130.
The damper 100 according to the third embodiment of the present invention may include a linear motion shaft 110, a rotating body 120, a frame 130, a viscous body 140, and an additional rotating member 150.

A linear motion shaft 110 and a rotating body 120 of the damper shown in FIG.
The linear motion shaft 110 is a shaft body provided with a spiral groove G that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The linear motion shaft 110 includes a cylindrical portion 112 that forms a cylinder H having an outer diameter D that coincides with the spiral groove bottom diameter of the spiral groove G and a spiral portion 111 that forms the spiral groove G in order along the longitudinal direction. The
FIG. 8 (A) shows a linear motion shaft 110 composed of a spiral portion 111 occupying one half of one side and a cylindrical portion 112 occupying the other half of the other side.

The rotating body 120 is a mechanism guided along the spiral groove G.
FIG. 5 shows an example of the structure of the rotating body 120.
The rotating body 120 includes a rotating body main body 121 and a plurality of rotating body balls 122.
The rotating body 121 is provided with a through hole having an inner diameter slightly larger than the outer diameter of the linear motion shaft 110.
The rotating body main body 121 has a circulation passage for circulating a plurality of rotating body balls 122.
The rotating body main body 121 is provided with a spiral groove 125 having a curvature that substantially matches the radius of the rotating body ball 122 on the inner wall of the through hole.
The spiral groove has the same lead as the spiral groove G of the spiral portion 111 of the linear motion shaft 110.
The plurality of rotating body balls 122 fit in line with the spiral groove 125 of the rotating body main body 121 and the spiral groove of the linear motion shaft 110 and can circulate through the circulation passage 126.

When the linear moving body 110 and the rotating body 120 are relatively displaced in the longitudinal direction, the rotating body 120 is guided between the cylindrical portion 112 and the spiral portion 111 along the spiral groove G corresponding to the relative displacement.
When the linear motion shaft 110 is guided by the spiral portion 111 and moved in the longitudinal direction, the rotating body 120 is rotationally displaced corresponding to the linear motion displacement of the linear motion shaft 110.
When the rotating body 120 is positioned in the spiral portion 111, the ratio of the linear displacement of the linear movement shaft 110 and the rotational displacement of the rotating body 120 corresponds to the lead P.
When the linear motion shaft 110 is guided by the cylindrical portion 112 and moved in the longitudinal direction, the rotating body 120 can freely rotate or stop. The ratio between the linear displacement of the linear motion shaft 110 and the rotational displacement of the rotating body 120 becomes undefined.
As a result, when the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the ratio between the linear motion displacement of the linear motion shaft 110 and the rotational displacement of the rotary body 120 changes corresponding to the relative displacement.

A linear motion shaft 110 and a rotating body 120 of the damper shown in FIG. 8B will be described.
The linear motion shaft 110 is a shaft body provided with a spiral groove G that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The linear motion shaft 110 has a first cylindrical portion 112x that forms a cylinder H having an outer diameter D that coincides with the spiral groove bottom diameter of the spiral groove G in order along the longitudinal direction, and an intermediate spiral portion 111m that forms the spiral groove G. And a second cylindrical portion 112y that forms a cylinder H having an outer diameter D coinciding with the spiral groove bottom diameter of the spiral groove G.
FIG. 8 (B) is divided into three equal parts in the longitudinal direction, the first cylindrical part 112X occupying one third part, the spiral part 111m occupying one third part of the middle, and the first cylindrical part 112m occupying the other one third part. A linear motion shaft 110 composed of two cylindrical portions 112y is shown.

The structure of the rotator 120 is the same as that in FIG.
When the linear moving body 110 and the rotating body 120 are relatively displaced in the longitudinal direction, the rotating body 120 straddles the intermediate spiral portion 111m between the first cylindrical portion 112x and the second cylindrical portion 112y in accordance with the relative displacement. It is guided following the spiral groove G or cylinder H.
When the linear motion shaft 110 moves in the longitudinal direction, the rotating body 120 is rotationally displaced corresponding to the linear motion displacement of the linear motion shaft 110.
When the rotating body 120 is positioned at the first cylindrical portion 112x, the rotating body 120 freely rotates or stops. The ratio between the linear displacement of the linear motion shaft 110 and the rotational displacement of the rotating body 120 becomes undefined.
When the rotator 120 is positioned in the spiral portion 111m, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotator 120 corresponds to the lead P.
When the rotating body 120 is positioned at the second cylindrical portion 112y, the rotating body 120 freely rotates or stops. The ratio between the linear displacement of the linear motion shaft 110 and the rotational displacement of the rotating body 120 becomes undefined.
As a result, when the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the ratio between the linear motion displacement of the linear motion shaft 110 and the rotational displacement of the rotary body 120 changes corresponding to the relative displacement.

A linear motion shaft 110 and a rotating body 120 of the damper shown in FIG. 8C will be described.
The linear motion shaft 110 is a shaft body provided with a spiral groove G that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The first cylindrical portion 111x in which the linear motion shaft 110 forms the spiral groove G in order along the longitudinal direction and the intermediate cylindrical portion 112m and the spiral forming the cylinder H having the outer diameter D that coincides with the spiral groove bottom diameter of the spiral groove G It is comprised by the 2nd spiral part 111y which forms the groove | channel G.
FIG. 8C is composed of a first spiral portion 111X that occupies one third of the middle portion, an intermediate cylindrical portion 112m that occupies the middle one third portion, and a second spiral portion 111y that occupies the other third portion. A linear motion shaft 110 is shown.

The structure of the rotator 120 is the same as that in FIG.
When the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the rotary body 120 straddles the intermediate cylindrical portion 112m between the first spiral portion 111x and the second spiral portion 111y corresponding to the relative displacement. It is guided following the spiral groove G or cylinder H.
When the linear motion shaft 110 moves in the longitudinal direction, the rotating body 120 is rotationally displaced corresponding to the linear motion displacement of the linear motion shaft 110.
When the rotator 120 is positioned at the first spiral portion 111x, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotator 120 corresponds to the first lead P1.
When the rotating body 120 is positioned at the intermediate cylindrical portion 112m, the rotating body 120 freely rotates or stops. The ratio between the linear displacement of the linear motion shaft 110 and the rotational displacement of the rotating body 120 becomes undefined.
When the rotating body 120 is positioned at the second spiral portion 111y, the ratio of the linear displacement of the linear movement shaft 110 to the rotational displacement of the rotating body 120 corresponds to the first lead P1.
As a result, when the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the ratio between the linear motion displacement of the linear motion shaft 110 and the rotational displacement of the rotary body 120 changes corresponding to the relative displacement.

  Since the structures of the viscous body 140 and the additional rotating member 150 are the same as those described above, description thereof will be omitted.

A structure of a damper 100 according to the fourth embodiment of the present invention will be described with reference to the drawings.
FIG. 10 is a partial view of a damper according to the fourth embodiment of the present invention. FIG. 11 is a partial perspective view of a damper according to a fourth embodiment of the present invention.

A damper 100 according to the fourth embodiment of the present invention includes a linear motion shaft 110, a rotating body 120, and a frame 130.
The damper 100 according to the fourth embodiment of the present invention may include a linear motion shaft 110, a rotating body 120, a frame 130, a viscous body 140, and an additional rotating member 150.

The linear motion shaft 110 and the rotating body 120 of the damper shown in FIG.
The linear motion shaft 110 is a shaft body provided with a spiral groove G that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The linear motion shaft 110 includes a guide portion 113 that forms a guide groove F that extends in the longitudinal direction in order along the longitudinal direction, and a spiral portion 111 that forms a spiral groove G.
The outer diameter of the guide portion 113 and the outer diameter of the spiral portion 111 coincide.
The groove bottom diameter of the guide groove F and the groove bottom diameter of the spiral groove G coincide.
The guide groove F of the guide part 113 and the spiral groove G of the spiral part 111 are connected without a step.
FIG. 10 (A) shows a linear motion shaft 110 composed of a guide portion 113 occupying one half of one side and a spiral portion 111 occupying the other half of the other side.

The rotating body 120 is a mechanism guided along the spiral groove G.
FIG. 11 shows an example of the structure of the rotating body 120.
The rotating body 120 includes a rotating body main body 121 and a rotating body ball 122.
The rotating body main body 121 is provided with a through hole having an inner diameter slightly smaller than the outer diameter of the linear motion shaft 110.
The rotator main body 121 is provided with a single recess 123 having a curvature substantially matching the radius of the rotator ball 122 on the inner wall of the through hole.
The rotating body ball 122 is fitted in the recess 123.
As a result, the rotating body ball 122 is rotatably supported by fixing the position in the radial direction and the position in the longitudinal direction on the inner wall of the through hole of the rotating body main body 121.

The rotating body 120 may include a rotating body main body 121 and N rotating body balls 122.
In this case, the linear motion shaft 110 is provided with N spiral grooves G.
The rotator main body 121 is provided with N dents 123 having a curvature substantially matching the radius of the rotator ball 122 on the inner wall of the through hole.
The N rotating body balls 122 are fitted into the N recesses 123, respectively.
As a result, the N rotating balls 122 are supported rotatably on the inner wall of the through hole of the rotating body 121 with the radial position and the longitudinal position fixed.
FIG. 11 shows a state where the rotating body 120 has two rotating balls 122 and the linear motion shaft 110 has two spiral axes G.

When the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the rotary body 120 is guided between the guide portion 113 and the spiral portion 111 along the spiral groove G or the guide groove F in accordance with the relative displacement. The
When the linear motion shaft 110 moves in the longitudinal direction, the rotating body 120 is rotationally displaced corresponding to the linear motion displacement of the linear motion shaft 110.
When the rotating body 120 is positioned on the guide portion 113, the rotation of the rotating body 120 stops.
When the rotating body 120 is positioned in the spiral portion 111, the ratio of the linear displacement of the linear movement shaft 110 and the rotational displacement of the rotating body 120 corresponds to the lead P.
As a result, when the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the ratio between the linear motion displacement of the linear motion shaft 110 and the rotational displacement of the rotary body 120 changes corresponding to the relative displacement.

The linear motion shaft 110 and the rotating body 120 of the damper shown in FIG.
The linear motion shaft 110 is a shaft body provided with a spiral groove G that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The linear motion shaft 110 is, in order along the longitudinal direction, a first guide member 113x that forms a guide groove F that extends in the longitudinal direction, an intermediate spiral portion 111m that forms a spiral groove G, and a guide that extends in the longitudinal direction along the longitudinal direction. It is comprised with the 2nd guide part 113y which forms the groove | channel G.
The guide groove F of the first guide portion 113x, the spiral groove G of the intermediate spiral portion 111m, and the guide groove F of the second guide portion 113y are connected without a step.
FIG. 10B is divided into three equal parts in the longitudinal direction, the first guide part 113X occupying one third part, the intermediate spiral part 111m occupying the middle one third part, and the other one third part. The linear motion axis | shaft 110 comprised with the 2nd guide part 113y is shown.

Since the structure of the rotating body 120 is the same as that in the case of FIG.
When the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the rotary body 120 straddles the intermediate spiral portion 111m between the first guide portion 113x and the second guide portion 113y corresponding to the relative displacement. It is guided following the guide groove F or the spiral groove G.
When the linear motion shaft 110 moves in the longitudinal direction, the rotating body 120 is rotationally displaced or stopped corresponding to the linear motion displacement of the linear motion shaft 110.
When the rotator 120 is positioned at the first guide portion 113x, the rotation of the rotator 120 stops.
When the rotator 120 is positioned in the intermediate spiral portion 111m, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotator 120 corresponds to the lead P.
When the rotating body 120 is positioned at the second guide portion 113y, the rotation of the rotating body 120 stops.
As a result, when the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the ratio between the linear motion displacement of the linear motion shaft 110 and the rotational displacement of the rotary body 120 changes corresponding to the relative displacement.

A linear motion shaft 110 and a rotating body 120 of the damper shown in FIG.
The linear motion shaft 110 is a shaft body provided with a spiral groove G that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The linear motion shaft 110 forms a spiral groove G and a first spiral portion 111x that forms a spiral groove G in order along the longitudinal direction, an intermediate guide portion 113m that forms a guide groove F that extends in the longitudinal direction along the longitudinal direction, and the spiral groove G. And the second spiral portion 111y.
The spiral groove G of the first spiral portion 111x, the guide groove F of the intermediate guide portion 113m, and the spiral groove of the second spiral portion are connected without any step.
FIG. 10C is divided into three equal parts in the longitudinal direction, the first spiral part 111X occupying one third part, the intermediate guide part 113m occupying the middle one third part, and the other third part. The linear motion axis | shaft 110 comprised with the 2nd spiral part 111y is shown.

The structure of the rotator 120 is the same as that in FIG.
When the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the rotary body 120 straddles the intermediate guide portion 112m between the first spiral portion 111x and the second spiral portion 111y corresponding to the relative displacement. It is guided following the guide groove F or the spiral groove G.
When the linear motion shaft 110 moves in the longitudinal direction, the rotating body 120 is rotationally displaced or stopped corresponding to the linear motion displacement of the linear motion shaft 110.
When the rotator 120 is positioned at the first spiral portion 111x, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotator 120 corresponds to the first lead P1.
When the rotating body 120 is positioned at the intermediate guide portion 113m, the rotation of the rotating body 120 stops.
When the rotator 120 is positioned in the second spiral portion 111y, the ratio of the linear displacement of the linear motion shaft 110 to the rotational displacement of the rotator 120 corresponds to the second lead P2.
As a result, when the linear motion body 110 and the rotary body 120 are relatively displaced in the longitudinal direction, the ratio between the linear motion displacement of the linear motion shaft 110 and the rotational displacement of the rotary body 120 changes corresponding to the relative displacement.

  Since the structure of the viscous body 140 and the additional rotating member 150 is the same as that described above, the description thereof is omitted.

Next, a damper according to a fifth embodiment of the present invention will be described with reference to the drawings.
FIG. 12 is a front view of a damper according to the fifth embodiment of the present invention.

The damper according to the fifth embodiment of the present invention includes a first linear motion shaft 110x, a second linear motion shaft 110y, a linear motion shaft frame 115, a first rotary body 120x, a second rotary body 120y, and a rotary body frame 135. Consists of.
The first linear motion shaft 110x has a spiral groove bottom diameter of the first spiral portion 111x provided with a spiral groove G that is a spiral groove having a first lead P1 along the longitudinal direction on the outer peripheral surface. It is a linear motion shaft having a first cylindrical portion 112x that forms a cylinder H having a matching outer diameter D.
The second linear motion shaft 110y has a second cylindrical portion 112x that forms a cylinder H having an outer diameter D that coincides with the spiral groove bottom diameter of the spiral groove G along the longitudinal direction and a second lead P2 along the longitudinal direction. This is a linear motion shaft having a second spiral portion 111y provided with a spiral groove G, which is a spiral groove.
The linear motion shaft frame 115 has the first linear motion shaft 110x and the second linear motion so that the first spiral portion 111x and the second cylindrical portion 112x are in parallel and the first cylindrical portion 112y and the second spiral portion 111y are parallel. This is a frame for fixing the shaft 110y so that the longitudinal directions thereof are parallel to each other.

The first rotating body 120x is a rotating body that is guided along the spiral groove G of the first spiral portion 111x.
The second rotating body 120y is a rotating body that is guided following the spiral groove G of the second spiral portion 111y.
The rotating body frame 135 is a mechanism that rotatably supports the first rotating body 120x and the second rotating body 120y.
When the linear moving body frame 115 and the rotating body frame 135 are relatively displaced in the longitudinal direction, the first state in which the first rotating body 120x is guided following the spiral groove G of the first spiral portion 111x corresponding to the relative displacement. And the second state in which the second rotating body 120y is guided along the spiral groove G of the second spiral portion 111y are alternately repeated.
In the first state, the second rotating body 120y is guided by the second cylindrical portion 112y, and the second rotating body 120y freely rotates or stops.
In the second state, the first rotating body 120x is guided by the first cylindrical portion 112x, and the first rotating body 120x freely rotates or stops.

Next, a damper according to a sixth embodiment of the present invention will be described with reference to the drawings.
FIG. 13 is a cross-sectional view of the viscous damper according to the sixth embodiment of the present invention.

The damper according to the sixth embodiment includes a linear motion shaft 110, a rotating body 120, an additional rotating member 150, an electromagnetic clutch 160, and a frame 130.
The damper according to the sixth embodiment may include a linear motion shaft 110, a rotating body 120, an additional rotating member 150, an electromagnetic clutch 160, a frame 130, and a viscous body 140.

The linear motion shaft 110 is a shaft body provided with a spiral groove G which is a spiral groove having a predetermined lead P along the longitudinal direction on the outer peripheral surface.
The linear motion shaft 110 is provided with a spiral groove G having a predetermined lead P in the longitudinal direction.
FIG. 14 shows the linear motion shaft 110.

The rotating body 120 is a mechanical element that is guided along the spiral groove G.
Since the structure of the rotator 120 is the same as the structure of the rotator 120 according to the third embodiment, the description thereof is omitted.

The additional rotating member 150 is a member that can rotate in synchronization with the rotating body 120.
The additional rotation member 150 is provided with the rotation center coinciding with the rotation center of the rotating body 120.

The electromagnetic clutch 160 is a mechanical element that can attach and detach the rotating body 120 and the additional rotating member 150.
For example, the rotating body 120 and the additional rotating member 150 are disconnected with no energization, and the rotating body 120 and the additional rotating member 150 are brought into contact with each other with a predetermined urging force when energized.
For example, the rotating body 120 and the additional rotating member 150 are attached to each other by using a spring force without being energized, and the rotating body 120 and the additional rotating member 150 are separated by being energized.
FIG. 13 shows a type in which the rotating body 120 and the additional rotating member 150 are attached in an energized state.

For example, when the linear moving body 110 and the rotating body 120 are not relatively displaced in the longitudinal direction, the rotation of the rotating body 120 and the rotation of the additional rotating member 150 are separated.
For example, the rotation of the rotating body 120 and the rotation of the additional rotating member 150 are separated when the linear moving body 110 and the rotating body 120 undergo a minute relative displacement in the longitudinal direction.
In the case of the longitudinal abutment, when the linear moving body 110 and the rotating body 120 are relatively displaced in the longitudinal direction, the electromagnetic clutch 160 is operated and the rotating member 120 and the additional rotating member 150 are rotated in synchronization with the relative displacement.

Next, the seismic isolation mechanism according to the first to sixth embodiments of the present invention will be described with reference to the drawings.
FIG. 15 is a first conceptual diagram showing an application of the damper according to the first to sixth embodiments of the present invention. FIG. 16 is a conceptual diagram 2 showing an application of the damper according to the first to sixth embodiments of the present invention. FIG. 17 is a conceptual diagram 3 showing an application of the damper according to the first to sixth embodiments of the present invention. FIG. 18 is a conceptual diagram 4 showing an application of the damper according to the first to sixth embodiments of the present invention.

The seismic isolation mechanism according to the first to fourth embodiments of the present invention will be described.
The seismic isolation mechanism according to the first to fourth embodiments of the present invention is a mechanism provided in the structure 10 and includes a damper 100 and a pair of connecting members 200.
The damper 100 includes a linear motion shaft 110, a rotating body 120, and a frame 130.
The damper 100 may include a linear motion shaft 110, a rotating body 120, a frame 130, a viscous body 140, and an additional rotating member 150.

The linear motion shaft 110 is a shaft body provided with a spiral groove G which is a spiral groove having a predetermined lead P along the longitudinal direction on the outer peripheral surface.
The spiral groove G is provided in part or all of the outer peripheral surface of the linear motion shaft 110.
One or a plurality of spiral grooves G are provided on the outer peripheral surface of the linear motion shaft 110.

The rotating body 120 is a mechanism guided along the spiral groove G.
For example, the rotating body 120 performs a spiral motion relative to the linear motion shaft 110 following the spiral groove G provided on the outer peripheral surface of the linear motion shaft 110.
When the linear motion shaft 110 is moved in the longitudinal direction while restricting the movement of the rotational body 120 in the longitudinal direction of the linear motion shaft 110, the rotational body 120 performs a rotational motion.
The rotating body 120 may be composed of a rotating body main body 121 and a rotating body ball 122.
The rotating body ball 122 is held by the rotating body main body 121 and guided to the spiral groove G of the linear motion shaft 110.

The frame 130 is the structure 10 that rotatably supports the rotating body 120.
The frame 130 includes a frame main body 131 and a rotating body bearing 132.
The rotator bearing 132 supports the rotator 120 on the basis of the frame main body 131 so as to restrain the movement of the linear motion shaft in the longitudinal direction and to rotate freely.

The pair of connecting members 200 is a member that connects the linear motion shaft 110 and the frame 130 to a pair of connecting portions that are relatively displaced as the structure 10 swings.
The pair of connecting members 200 may restrain rotation around the longitudinal direction.

  When the structure 10 shakes, the ratio of the linear displacement of the linear motion shaft 110 and the rotational displacement of the rotating body 120 changes corresponding to the shaking.

  Below, the seismic isolation mechanism which concerns on the 1st-6th embodiment of this invention is demonstrated separately.

The seismic isolation mechanism according to the first embodiment of the present invention will be described.
The seismic isolation mechanism according to the first embodiment of the present invention includes the damper according to the first embodiment and a pair of connecting members 200.

When the linear motion shaft 110 includes the first spiral portion 111x and the second spiral portion 111y, the rotating body is placed in one spiral groove of the first spiral portion or the second spiral portion when the structure 10 does not shake. When the structure 10 swings, the rotating body is guided following the spiral groove between the first spiral portion and the second spiral portion.
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking.

When the linear motion shaft 110 includes the first spiral portion 111x, the intermediate spiral portion 111m, and the second spiral portion 111y, the rotating body guides along the spiral groove of the intermediate spiral portion when the structure 10 does not shake. When the structure 10 swings, the rotating body is guided along the spiral groove across the intermediate spiral portion between the first spiral portion and the second spiral portion in response to the swing.
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking.

Next, the seismic isolation mechanism according to the second embodiment of the present invention will be described.
The seismic isolation mechanism according to the second embodiment of the present invention includes the damper according to the second embodiment and a pair of connecting members 200.

When the structure 10 does not swing, the rotating body is guided following the spiral groove of the intermediate lead, and when the structure 10 swings, the rotating body corresponds to the swing of the first lead spiral groove and the second lead spiral groove. Guided along the spiral groove across the spiral groove of the intermediate lead between
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking.

Next, the seismic isolation mechanism according to the third embodiment of the present invention will be described.
The seismic isolation mechanism according to the third embodiment of the present invention includes the damper according to the third embodiment and a pair of connecting members 200.

When the linear motion shaft 110 includes the cylindrical portion 112 and the spiral portion 111, the rotating body 120 is one of the cylinder H of the cylindrical portion 112 or the spiral groove G of the spiral portion 111 when the structure 10 does not shake. When the structure 10 swings, the rotating body 120 is guided between the cylindrical portion 112 and the spiral portion 111 following the spiral groove G or the cylinder H.
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking.

When the linear motion shaft 110 is configured by the first cylindrical portion 112x, the intermediate spiral portion 111m, and the second cylindrical portion 112y, the rotating body 120 moves into the spiral groove G of the intermediate spiral portion 111m when the structure 10 does not shake. The rotating body 120 is guided in accordance with the swinging motion of the structure 10, and the rotating body 120 straddles the intermediate spiral portion 111m between the first cylindrical portion 112x and the second cylindrical portion 112y into the spiral groove G or the cylindrical H. Follow the guide.
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking.

When the linear motion shaft is constituted by the first spiral portion 111x, the intermediate cylindrical portion 112m, and the second spiral portion 111y, the rotating body 120 follows the cylinder H of the intermediate cylindrical portion 112m when the structure 10 does not shake. When the structure 10 is guided, the rotating body 120 follows the spiral groove G or the cylinder H across the intermediate cylindrical portion 112m between the first spiral portion 111x and the second spiral portion 111y in response to the swing. Guided.
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking.

Next, the seismic isolation mechanism according to the fourth embodiment of the present invention will be described.
The seismic isolation mechanism according to the fourth embodiment of the present invention includes the damper according to the fourth embodiment and a pair of connecting members 200.

When the linear motion shaft 110 is configured by the guide portion 113 and the spiral portion 111, the rotating body 120 can move out of the guide groove F of the guide portion 113 or the spiral groove G of the spiral portion 111 when the structure 10 does not shake. The rotating body 120 is guided along one side, and is guided along the spiral groove G or the guide groove F between the guide portion 113 and the spiral portion 111 in response to the swing when the structure 10 swings.
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking.

The linear motion shaft 110 includes a first guide portion 113x, an intermediate spiral portion 111m, and a second guide portion 113y, and the rotating body 120 guides along the spiral groove G of the intermediate spiral portion 111m when the structure 10 does not shake. In response to the shaking of the structure 10, the rotating body 120 follows the guide groove F or the spiral groove G across the intermediate spiral portion 111m between the first guide portion 113x and the second guide portion 113y. Guided.
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking.

When the linear motion shaft 110 is composed of the first spiral portion, the intermediate guide portion, and the second spiral portion, the rotating body 120 guides along the guide groove F of the intermediate guide portion 113m when the structure 10 does not shake. In response to the swing of the structure 10, the rotating body 120 follows the spiral groove G or the guide groove F across the intermediate guide portion 113m between the first spiral portion 111x and the second spiral portion 111y. Guided.
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking.

Next, a seismic isolation mechanism according to the fifth embodiment of the present invention will be described.
The seismic isolation mechanism according to the fifth embodiment of the present invention includes the damper according to the fifth embodiment and a pair of connecting members 200.
When the structure 10 swings, the first rotating body 120x is guided along the spiral groove G of the first spiral portion 111x in response to the swing, and the second rotating body 120y is the spiral of the second spiral portion 111y. The second state guided along the groove G is repeated alternately.
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft 110 and the rotational displacement of the rotating body 120 changes corresponding to the shaking.

Next, the seismic isolation mechanism according to the sixth embodiment of the present invention will be described.
The seismic isolation mechanism according to the sixth embodiment of the present invention includes the damper according to the sixth embodiment and a pair of connecting members 200.
When the structure 10 is not shaken, the rotation of the rotating body 120 and the rotation of the additional rotating member 150 are separated from each other. And the additional rotating member 150 rotate synchronously.
As a result, when the structure 10 shakes, the ratio between the linear displacement of the linear motion shaft 110 and the rotational displacement of the rotating body 120 changes corresponding to the shaking.

The attachment structure to the structure 10 of the seismic isolation mechanism concerning the 1st-6th embodiment of this invention is demonstrated based on a figure.
FIG. 15 is a first conceptual diagram showing an application of the damper according to the first to sixth embodiments of the present invention. FIG. 16 is a conceptual diagram 2 showing an application of the damper according to the first to sixth embodiments of the present invention. FIG. 17 is a conceptual diagram 3 showing an application of the damper according to the first to sixth embodiments of the present invention. FIG. 18 is a conceptual diagram 4 showing an application of the damper according to the first to sixth embodiments of the present invention.

FIG. 15 shows a form in which the damper 100 is provided between the layers of the structure 10 or between the structure 10 and the foundation.
In FIG. 15A, the damper 100 is disposed between the layers of the structure 10, the structure 10 is provided with a rigid mounting structure 15 on the upper layer, and the longitudinal direction of the linear motion shaft 110 is set along the horizontal direction. The first connecting member 210 connects both ends of the linear motion shaft 110 to the lower layer of the structure 10, and the second connecting member 220 connects the frame 130 to the mounting structure 15.
In FIG. 15B, the damper 100 is arranged between the layers of the structure 10, the structure 10 is provided with an attachment structure 15 having elasticity in the upper layer, and the longitudinal direction of the linear motion shaft 110 is set along the horizontal direction. The first connecting member 210 connects the linear motion shaft 110 to the mounting structure 15, and the second connecting member 220 connects the frame 130 to the lower layer of the structure 10.
In FIG. 15C, the damper 100 is disposed between the layers of the structure 10, the structure 10 is provided with a highly rigid mounting structure 15 on the upper layer, and the longitudinal direction of the linear motion shaft 110 is set along the horizontal direction. The first connecting member 210 connects the linear motion shaft 110 to the mounting structure 15, and the second connecting member 220 connects the frame 130 to the lower layer of the structure 10.
In FIG. 15D, the damper 100 is disposed between the layers of the structure 10, the longitudinal direction of the linear motion shaft 110 is along the diagonal direction between the layers of the structural body 10, and the first connecting member 210 is the linear motion shaft 110. Is connected to the upper layer of the structure, and the second connecting member connects the frame 130 to the lower layer of the structure 10.
In FIG. 15E, the damper 100 is arranged between the layers of the structure 10, the longitudinal direction of the linear motion shaft 110 is set along the vertical direction, and the first connecting member 210 connects the linear motion shaft 110 to the upper layer of the structure. The second connecting member connects the frame 130 to the lower layer of the structure 10.
In FIG. 15F, the damper 100 is disposed between the structure 10 and the foundation, the longitudinal direction of the linear motion shaft 110 is set along the horizontal direction, and the first connecting member 210 makes the linear motion shaft 110 a structure. It shows a state in which the second connecting member is connected based on the frame 130.

16 and 17 show a form in which dampers are arranged between the plurality of structures 10.
16 and 17 illustrate a damper according to a third embodiment of the present invention, in which the linear motion shaft 110 is configured by a first spiral portion 111x, an intermediate cylindrical portion 112m, and a second spiral portion 111y in order in the longitudinal direction. An example of using a device is illustrated.

In FIG. 16, a pair of dampers are arranged between the two structural bodies 10, and the longitudinal direction of the linear motion shaft 110 of the pair of dampers 100 is aligned along the horizontal direction. A pair of linear motion shafts are connected to each of the two structural portions, and the second connecting member 220 connects the pair of frames 130 to each other.
When the structure 10 does not swing, the pair of rotating bodies 120 are guided following the cylinder H of the intermediate cylindrical portion 112m, and when the structure 10 swings, the pair of rotating bodies 120 corresponds to the first spiral. Guided along the spiral groove G or the cylinder H across the intermediate cylindrical portion 112m between the portion 111x and the second spiral portion 111y.
As a result, when the structure does not shake, the pair of dampers 100 does not apply force to the two structures. Further, even when the structure is slightly shaken, the pair of dampers 100 does not apply force to the two structures.
When the structure swings, the pair of dampers 100 exerts a force on the two structures.
Among the forces, the force component proportional to the relative acceleration of the two structural bodies 10 has a function of changing the natural frequency of the structural bodies 10 by adding an apparent mass to the masses of the two structural bodies 10. To do.
A force component proportional to the relative speed of the two structural bodies 10 among the forces exerts a function of attenuating energy that shakes the two structural bodies 10.

In FIG. 17, a pair of dampers are arranged between the two structures 10, and the longitudinal direction of the linear motion shaft 110 of the pair of dampers 100 is aligned along the horizontal direction. A pair of linear motion shafts are connected to each other, and a state in which the second connecting member 220 connects the pair of frames 130 to the two structures 10 is shown.
When the structure 10 does not swing, the pair of rotating bodies 120 are guided following the cylinder H of the intermediate cylindrical portion 112m, and when the structure 10 swings, the pair of rotating bodies 120 corresponds to the first spiral. Guided along the spiral groove G or the cylinder H across the intermediate cylindrical portion 112m between the portion 111x and the second spiral portion 111y.
As a result, when the structure does not shake, the pair of dampers 100 does not apply force to the two structures. Further, even when the structure is slightly shaken, the pair of dampers 100 does not apply force to the two structures.
When the structure swings, the pair of dampers 100 exerts a force on the two structures.
Among the forces, the force component proportional to the relative acceleration of the two structural bodies 10 has a function of changing the natural frequency of the structural bodies 10 by adding an apparent mass to the masses of the two structural bodies 10. To do.
A force component proportional to the relative speed of the two structural bodies 10 among the forces exerts a function of attenuating energy that shakes the two structural bodies 10.

In FIG. 18, the damper is arranged between the structure 10 and the foundation, the longitudinal direction of the linear motion shaft 110 of the damper 100 is set along the horizontal direction, and the first connecting member 210 connects the linear motion shaft to the structure. The second connecting member 220 is connected to the frame 130 as a basis.
When the structure 10 does not swing, the pair of rotating bodies 120 are guided following the cylinder H of the intermediate cylindrical portion 112m, and when the structure 10 swings, the pair of rotating bodies 120 corresponds to the first spiral. Guided along the spiral groove G or the cylinder H across the intermediate cylindrical portion 112m between the portion 111x and the second spiral portion 111y.
As a result, when the structure does not shake, the pair of dampers 100 does not exert a force on the structure. Further, even when the structure is slightly shaken, the pair of dampers 100 does not apply force to the two structures.
When the structure swings, the pair of dampers 100 exerts a force on the structure.
Among the forces, a force component proportional to the acceleration of the structure 10 exerts a function of changing the natural frequency of one structure 10 by adding an apparent mass to the mass of the structure 10.
Among the forces, a force component proportional to the speed of the structure 10 exhibits a function of attenuating energy that shakes the structure 10.

Next, the seismic isolation mechanism according to the seventh embodiment of the present invention will be described with reference to the drawings.
FIG. 19 is a first conceptual diagram of a seismic isolation mechanism according to the seventh embodiment of the present invention. FIG. 20 is a second conceptual diagram of the seismic isolation mechanism according to the seventh embodiment of the present invention. FIG. 21 is a conceptual diagram 3 of the seismic isolation mechanism according to the seventh embodiment of the present invention.

The seismic isolation mechanism according to the seventh embodiment of the present invention includes a damper 100 and a pair of connecting members 200.
The damper 100 includes a linear motion shaft 110 that is a shaft body provided with a spiral groove that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface, a rotating body that is guided along the spiral groove, and a rotating body. It is composed of a frame that rotatably supports the body.
The damper 100 may be the damper according to the first to sixth embodiments, or may be provided with a spiral groove having a linear movement axis having a certain lead along the longitudinal direction.
A pair of connecting members 200 connect the linear motion shaft 110 of the damper 100 and the frame 130 to a pair of connecting portions of the structure 10 that are relatively displaced.
The connecting members 210 and 220 can change the angle formed between the imaginary line connecting the pair of connecting portions and the main displacement direction between the layers of the structure 10 in response to the shaking when the structure 10 is shaken.

  When the structure 10 is shaken, one of the pair of connecting members 200 moves along the structural member of the structure 10 in response to the shaking, and an imaginary line connecting the pair of connecting points and the layer between the structures 10 It is possible to change the angle formed by the main displacement direction.

19-21 shows the example of the format of the seismic isolation mechanism concerning 7th embodiment.
In FIG. 19, the structure is provided with a mounting structure 15 having high rigidity in the upper layer, and the first connecting member 210 attaches the linear motion shaft 110 to the longitudinal direction of the linear motion shaft 110 along the horizontal direction. A state where the second connecting member 220 is connected to the body 15 and the frame 130 is connected to the structure is shown.
The attachment structure 15 is composed of two structural members corresponding to two inclined sides of a virtual inverted triangle with the base fixed to the upper layer of the structure and the apex facing downward.
The first connecting member 210 is movable along the structural member.
When the structural body 10 is shaken, the first connecting member 210 moves along the structural member of the structural body 10 in response to the shaking, and the main displacement direction between the imaginary line connecting the pair of connecting portions and the layer of the structural body 10. You can change the angle between.

In FIG. 20, the structure is provided with a mounting structure 15 having high rigidity in the upper layer, and the first connecting member 210 mounts the linear motion shaft 110 along the longitudinal direction of the linear motion shaft 110 along the horizontal direction. A state where the second connecting member 220 is connected to the body 15 and the frame 130 is connected to the structure is shown.
The attachment structure 15 is composed of two structural members corresponding to two inclined sides of a virtual inverted triangle with the base fixed to the upper layer of the structure and the apex facing downward.
The second connecting member 220 is movable along the structural member.
When the structure 10 is shaken, the second connecting member 220 moves along the structure 10 in response to the shaking, and is formed by an imaginary line connecting a pair of connecting portions and a main displacement direction between the layers of the structure 10. You can change the angle.

In FIG. 21, the mounting structure 15 having a large rigid body is provided on the wall or the column of the structure 10, and the first connecting member 210 moves the linear motion shaft 110 along the longitudinal direction of the linear motion shaft 110 along the inclined direction. The state is shown in which the second connecting member 220 connects the frame 130 to the mounting structure 15 by connecting to the upper corner of the structure 10.
The mounting structure 15 is composed of two structural members corresponding to two inclined sides of a virtual triangle whose base is fixed to the pillar of the structure and whose apex is directed horizontally.
The first connecting member 210 is movable along the structural member.
When the structure 10 is shaken, the second connecting member 220 moves along the structural member of the structure 10 in response to the shaking, and the main displacement direction between the imaginary line connecting the pair of connecting portions and the layer of the structure 10 You can change the angle between.

数値モデルのダンパーの設定条件は、以下の通りである。

数値モデルで表される粘性マスダンパーを加振して、正弦波、単振動数、一定振幅の変位強制振動をさせる場合を想定して、試算する。
数値モデルに示す正弦波、単振動数、一定振幅の変位強制振動を入力したときに、直動軸の振幅が切り替え振幅を下回る場合は回転体はリードＬｄ１の螺旋溝に案内され、直動軸の振幅が切り替え振幅を越える場合は回転体はリードＬｄ２の螺旋溝に案内される。 Below, the basic principle of the seismic isolation mechanism concerning embodiment of this invention is demonstrated based on a figure using a numerical model.
FIG. 22 is a conceptual diagram of a numerical model according to the embodiment of the present invention. FIG. 23 is a first calculation result of the numerical model according to the embodiment of the present invention. FIG. 24 is a second calculation result of the numerical model according to the embodiment of the present invention. FIG. 25 is a third calculation result of the numerical model according to the embodiment of the present invention. FIG. 26 is a fourth calculation result of the numerical model according to the embodiment of the present invention. FIG. 27 is a fifth calculation result of the numerical model according to the embodiment of the present invention.
For convenience of explanation, a case where the damper according to the first embodiment is employed will be described as an example.
TYPE1 in the description is of a type in which the central lead Ld1 shown in FIG. 4C is shorter than the left and right leads Ld2.
TYPE2 in the description is of a type in which the central lead Ld1 shown in FIG. 4B is longer than the left and right leads Ld2.
The harmonic excitation conditions of the numerical model are as follows.

The setting conditions of the numerical model damper are as follows.

A trial calculation is performed assuming a case where a viscous mass damper represented by a numerical model is vibrated to cause a displacement forced vibration with a sine wave, single frequency, and constant amplitude.
When a sine wave, a single frequency, or a forced displacement vibration with a constant amplitude shown in the numerical model is input, if the amplitude of the linear motion shaft is lower than the switching amplitude, the rotating body is guided to the spiral groove of the lead Ld1, and the linear motion shaft If the amplitude exceeds the switching amplitude, the rotating body is guided to the spiral groove of the lead Ld2.

図２３は、数値モデルに上式を適用して計算した加速度の変化に応じた慣性力の変動例を示す。
ＴＹＰＥ１では、加速度の振幅が大きいときの慣性力が加速度の振幅が小さいときの慣性力より小さくなる様子を示す。
この様にすることで、見かけの慣性力を頭打ちにすることができる。
ＴＹＰＥ２では、加速度の振幅が大きいときの慣性力が加速度の振幅が小さいときの慣性力より大きくなる様子を示す。
この様にすると、加速度の振幅が大きくなると、見かけの慣性力を急激に大きくすることができる。
図２７は、ＴＹＰＥ２での時間の経過に応じた直動軸の変位、加速度と直動軸に作用する慣性力の変化を示す。
時間の経過に応じて、慣性力のピークが急激に大きくなる様子を示す。 First, the numerical analysis result of the inertial force acting on the linear motion shaft of the damper will be described.
The inertial force acting on the linear motion shaft was calculated by changing the value of the lead Ld depending on whether the excitation amplitude is less than or exceeding the switching amplitude.
The inertial force is a force that acts on the linear motion shaft along the longitudinal direction by torque generated by the rotational inertia ratio of the rotating body when the rotating body is rotationally accelerated.
The relational expression between the inertial force Qi and acceleration is as follows.

FIG. 23 shows a variation example of the inertial force according to the change in acceleration calculated by applying the above equation to the numerical model.
TYPE 1 shows that the inertial force when the acceleration amplitude is large is smaller than the inertial force when the acceleration amplitude is small.
By doing so, the apparent inertial force can be peaked out.
TYPE 2 shows a state where the inertial force when the acceleration amplitude is large becomes larger than the inertial force when the acceleration amplitude is small.
In this way, as the acceleration amplitude increases, the apparent inertial force can be rapidly increased.
FIG. 27 shows the displacement of the linear motion shaft, the acceleration, and the change of the inertial force acting on the linear motion shaft over time in TYPE2.
It shows how the peak of the inertial force suddenly increases with the passage of time.

図２４は、数値モデルに上式を適用して計算した速度の変化に応じた粘性抵抗力の変動例を示す。
ＴＹＰＥ１では、速度の振幅が大きいときの粘性抵抗力が速度の振幅が小さいときの粘性抵抗力より小さくなる様子を示す。
この様にすることで、みかけの減衰力を頭打ちにすることができる。
ＴＹＰＥ２では、速度の振幅が大きいときの粘性抵抗力が速度の振幅が小さいときの粘性抵抗力より大きくなる様子を示す。
この様にすると、速度の振幅が大きくなったときに見かけの減衰力を急激に大きくすることができる。 Next, a numerical analysis result of the viscous resistance force acting on the linear motion shaft of the damper will be described.
The value of the lead Ld was changed depending on whether the excitation amplitude was below or above the switching amplitude, and the viscous resistance force acting on the linear motion shaft was calculated.
The viscous resistance force is a force acting along the longitudinal direction on the linear motion shaft by a torque acting on the rotating body due to the viscous force of the viscous body.
The relational expression between the viscous resistance force Qv and the speed is as follows.

FIG. 24 shows a variation example of the viscous resistance force according to the change in speed calculated by applying the above equation to the numerical model.
TYPE 1 shows that the viscous resistance force when the velocity amplitude is large is smaller than the viscous resistance force when the velocity amplitude is small.
By doing so, the apparent damping force can reach a peak.
TYPE 2 shows a state where the viscous resistance force when the velocity amplitude is large is larger than the viscous resistance force when the velocity amplitude is small.
In this way, the apparent damping force can be increased rapidly when the velocity amplitude increases.

図２５は、数値モデルに上式を適用して計算した変位の変化に応じた慣性力と粘性抵抗力の合計力の変動例を示す。
ＴＹＰＥ１では、変位の振幅が大きいときの合計力が変位の振幅が小さいときの粘性抵抗力より小さくなる様子を示す。
この様にすることで、みかけの合計力を頭打ちにすることができる。
ＴＹＰＥ２では、変位の振幅が大きいときの合計力が変位の振幅が小さいときの合計力より大きくなる様子を示す。
この様にすると、変位の振幅が大きくなったときに見かけの合計力を急激に大きくすることができる。 Next, the numerical analysis result of the total force of the inertial force and the viscous resistance force acting on the linear motion shaft of the damper will be described.
The total force Q is as follows.

FIG. 25 shows a variation example of the total force of the inertial force and the viscous resistance force according to the change in displacement calculated by applying the above equation to the numerical model.
TYPE 1 shows that the total force when the displacement amplitude is large is smaller than the viscous resistance force when the displacement amplitude is small.
In this way, the apparent total power can reach its peak.
TYPE 2 shows a state in which the total force when the displacement amplitude is large is larger than the total force when the displacement amplitude is small.
In this way, the apparent total force can be increased rapidly when the amplitude of displacement increases.

図２６は、数値モデルに上式を適用して計算したリードの変化倍率とねじの摩擦増幅倍率との関係を示す。 Next, the numerical analysis result of the frictional resistance acting on the linear motion shaft of the damper will be described.
The value of the lead Ld was changed depending on whether the excitation amplitude was below or above the switching amplitude, and the viscous resistance force acting on the linear motion shaft was calculated.
The frictional resistance force is a force that acts along the longitudinal direction on the linear motion shaft by a torque that acts on the rotating body due to friction inside the damper.
The formula of the frictional resistance force Qf is as follows.

FIG. 26 shows the relationship between the change rate of the lead calculated by applying the above formula to the numerical model and the frictional amplification factor of the screw.

図２７は、時間の経過に伴う変位、加速度、慣性力の変化を示す。
変位の大きさに伴って慣性力の大きさが急激に大きくなる様子が分かる。 The change in the inertial force in TYPE 2 of the numerical model described above is shown below.
The displacement, speed, and acceleration of the linear motion axis are as follows.

FIG. 27 shows changes in displacement, acceleration, and inertial force over time.
It can be seen that the magnitude of the inertial force suddenly increases with the magnitude of the displacement.

Below, the effect | action of the seismic isolation mechanism concerning embodiment of this invention is demonstrated using a numerical model.
FIG. 28 is an operation explanatory view 1 of the seismic isolation mechanism according to the embodiment of the present invention. FIG. 29 is a second operation explanatory diagram of the seismic isolation mechanism according to the embodiment of the present invention. FIG. 30 is a third explanatory diagram of the operation of the seismic isolation mechanism according to the embodiment of the present invention.

FIG. 29 shows the relationship between the displacement of the structure 10 used in the numerical model and the reaction force.
In a range where the structure 10 is elastically deformed, the structure 10 has an elastic coefficient Ks1.
In a range where at least a part of the structure 10 is elastically plastically deformed, the structure 10 has an elastic coefficient Ks2.
In the numerical model, calculation is performed on the assumption that the elastic modulus Ke is apparent in the range in which the displacement is elastic-plastically deformed.

The numerical model is a seismic isolation mechanism according to the second embodiment, in which the intermediate spiral portion 111m and the intermediate spiral portion 111m are provided with a spiral groove G having a linear motion axis having a constant lead P along the longitudinal direction. The first spiral portion 111x and the second spiral portion 111y provided with a spiral groove G having a variable lead that becomes smaller in proportion to the distance that the lead separates away from the lead are used.
FIG. 29 shows the specifications of the linear motion shaft 110.
The length of the intermediate spiral portion 111m is 40 mm, the length of the first spiral portion 111x and the length of the second spiral portion 111y are 60 mm each.
The lead of the lead P of the intermediate spiral portion 111m is 45 mm, and the lead of the lead of the first spiral portion 111x and the lead of the lead of the second spiral portion 111y are proportionally separated from the intermediate spiral portion 111m from 45 mm to 26 mm, respectively. To change.

FIG. 30 shows the result of numerical analysis.
Case 1 in FIG. 30 shows the displacement response magnification with respect to the frequency ratio of the structure 10 with the seismic isolation mechanism according to the embodiment of the present invention.
Case 2 in FIG. 30 shows, as a comparative example, the displacement response magnification with respect to the frequency ratio of the structure 10 equipped with a seismic isolation mechanism having a linear motion shaft having a constant lead in the longitudinal direction.
As apparent from FIG. 30, when the displacement of the structure 10 is small, there is no difference in the response magnification between the case 1 and the case 2.
On the other hand, when the displacement of the structure 10 increases, the displacement response magnification of the case 1 becomes smaller than the displacement response magnification of the case 2.

The damper which concerns on embodiment of this invention has the following effects by the structure.
The rotating body 120 is guided along the spiral groove G having a predetermined lead P provided on the linear motion shaft 110 along the longitudinal direction, so that the rotational body 120 is rotatably guided. When the rotary body 120 is relatively displaced in the longitudinal direction, the rotary body 120 is rotated, and the ratio of the linear motion displacement of the linear motion shaft 110 to the rotational displacement of the rotary body 120 is changed corresponding to the relative displacement. The reaction force when the linear motion shaft 110 and the rotating body 120 are relatively displaced changes corresponding to the relative displacement.
In addition, since the linear motion shaft 110 has two types of spiral grooves G along the longitudinal direction, and the relative displacement, the rotating body 120 is guided along the two types of spiral grooves G. The reaction force when the rotator 120 is relatively displaced changes corresponding to the relative displacement.
Further, since the linear motion shaft 110 has three types of spiral grooves G along the longitudinal direction, and the relative displacement, the rotating body 120 is guided along the three types of spiral grooves G. The reaction force when the rotator 120 is relatively displaced changes corresponding to the relative displacement.
Further, since the linear motion shaft 110 has a spiral groove G having a lead P that changes along the longitudinal direction, and the relative displacement is made, the rotating body 120 is guided along the spiral groove G. The reaction force at the time of relative displacement with the rotating body 120 continuously changes corresponding to the relative displacement.
Further, the linear motion shaft 110 has a cylinder H and a spiral groove G along the longitudinal direction, and when the relative displacement is made, the rotating body 120 is guided along the cylinder H or the spiral groove G. The reaction force at the time of relative displacement between the rotating body 120 and the rotating body 120 changes corresponding to the relative displacement.
In addition, since the linear motion shaft 110 has a cylinder H, a spiral groove G, and a cylinder H along the longitudinal direction, and the relative displacement, the rotating body 120 is guided along the spiral groove G or the cylinder H. The reaction force when the moving shaft 110 and the rotating body 120 are relatively displaced changes corresponding to the relative displacement.
In addition, since the linear motion shaft 110 has the spiral groove G, the cylinder H, and the spiral groove G along the longitudinal direction, and the relative displacement, the rotating body 120 is guided following the cylinder H or the spiral groove G. The reaction force when the linear motion shaft 110 and the rotating body 120 are relatively displaced changes corresponding to the relative displacement.
Further, the linear movement shaft 110 has a guide groove F and a spiral groove G in the longitudinal direction along the longitudinal direction. When the linear motion shaft 110 is relatively displaced, the rotating body 120 is guided following the guide groove F or the spiral groove G. Therefore, the reaction force when the linear movement shaft 110 and the rotating body 120 are relatively displaced changes corresponding to the relative displacement.
Further, the linear motion shaft 110 has a guide groove F, a spiral groove G, and a guide groove F in the longitudinal direction along the longitudinal direction. When the linear movement shaft 110 is relatively displaced, the rotating body 120 is guided along the spiral groove G or the guide groove F. Since it did in this way, the reaction force at the time of the relative displacement of the linear motion shaft 110 and the rotary body 120 changes corresponding to the relative displacement.
Further, the linear motion shaft 110 has a spiral groove G, a guide groove F, and a spiral groove G in the longitudinal direction along the longitudinal direction. When the linear motion shaft 110 is relatively displaced, the rotating body 120 is guided along the guide groove F or the spiral groove G. Since it did in this way, the reaction force at the time of the relative displacement of the linear motion shaft 110 and the rotary body 120 changes corresponding to the relative displacement.
A pair of linear motion shafts 110 are arranged in parallel, one linear motion shaft 110 has a spiral groove G and a cylindrical H, and the other linear motion shaft 110 has a cylindrical H and a spiral groove G. The first state where the first rotary body 120x is guided along the spiral groove G of one linear motion shaft and the second rotary body corresponding to the relative displacement when the rotary body 120 and the rotary body 120 are relatively displaced in the longitudinal direction. Since the state in which 120y is guided along the spiral groove G of the other linear motion shaft 110 is alternately repeated, the reaction force when the linear motion shaft 110 and the rotating body 120 are relatively displaced is the relative displacement. It changes corresponding to.
The rotating body is guided along the spiral groove G having a predetermined lead provided in the longitudinal direction on the linear motion shaft 110, and the rotational body 120 is guided to rotate freely. When the body 120 is relatively displaced in the longitudinal direction, the rotating body 120 is rotated, and the electromagnetic clutch 160 is configured so that the rotation of the rotating body and the rotation of the additional rotating member can be attached and detached in accordance with the relative displacement. The reaction force at the time of relative displacement between the rotating body 120 and the rotating body 120 changes corresponding to the relative displacement.
Therefore, it is possible to provide the damper 100 suitable for optimizing the seismic isolation / damping performance with a simple configuration.

The seismic isolation mechanism according to the embodiment of the present invention has the following effects due to its configuration.
The rotating body 120 is guided along the spiral groove G having a predetermined lead P provided on the linear motion shaft 110 along the longitudinal direction, and the rotating body 120 is guided to rotate freely. When the body sways, the rotating body 120 rotates, and the ratio of the linear motion displacement of the linear motion shaft 110 to the rotational displacement of the rotational body 120 changes corresponding to the relative displacement. The reaction force at the time of relative displacement changes in accordance with the shaking of the structure 10.
Further, since the linear motion shaft 110 has two types of spiral grooves G along the longitudinal direction, and the relative displacement causes the rotating body 120 to be guided along the two types of spiral grooves G, the structure 10 shakes. Sometimes the reaction force when the linear motion shaft 110 and the rotating body 120 are relatively displaced changes corresponding to the shaking of the structure 10.
Further, the linear motion shaft 110 has three types of spiral grooves G along the longitudinal direction, and when the relative displacement is made, the rotating body 12-is guided along the three types of spiral grooves G in order. The reaction force at the time of relative displacement between the linear motion shaft 110 and the rotating body 120 changes when the structure 10 shakes.
In addition, the linear motion shaft 110 has a spiral groove G having a lead that changes along the longitudinal direction, and when the relative displacement is made, the rotating body 120 is guided along the spiral groove G. In addition, the reaction force when the linear motion shaft 110 and the rotating body 120 are relatively displaced changes continuously corresponding to the shaking of the structure 10.
Further, the linear motion shaft 110 has the cylinder H and the spiral groove G along the longitudinal direction, and when the relative displacement is made, the rotating body 120 is guided following the cylinder H or the spiral groove G. The reaction force at the time of relative displacement between the linear motion shaft 11 and the rotating body 120 changes when the structure 10 is shaken.
Further, since the linear motion shaft 110 has a cylinder H, a spiral groove G, and a cylinder H along the longitudinal direction, and the relative displacement, the rotating body 120 is guided along the spiral groove G or the cylinder H. When the body 10 shakes, the reaction force when the linear motion shaft 110 and the rotating body 120 are relatively displaced changes corresponding to the shaking of the structure 10.
In addition, since the linear motion shaft 110 has the spiral groove G, the cylinder H, and the spiral groove G along the longitudinal direction, and the relative displacement, the rotating body 120 is guided following the cylinder H or the spiral groove G. When the structure 10 is shaken, the reaction force when the linear motion shaft 110 and the rotating body 120 are relatively displaced changes in the structure 10 corresponding to the shake.
Further, the linear movement shaft 110 has a guide groove F and a spiral groove G in the longitudinal direction along the longitudinal direction. When the linear motion shaft 110 is relatively displaced, the rotating body 120 is guided following the guide groove F or the spiral groove G. Therefore, when the structure 10 is shaken, the reaction force when the linear motion shaft 110 and the rotating body 120 are relatively displaced changes corresponding to the shake of the structure 10.
Further, the linear motion shaft 110 has a guide groove F, a spiral groove G, and a guide groove F in the longitudinal direction along the longitudinal direction. When the linear movement shaft 110 is relatively displaced, the rotating body 120 is guided along the spiral groove G or the guide groove F. Therefore, when the structure 10 is shaken, the reaction force when the linear movement shaft 110 and the rotating body 120 are relatively displaced changes corresponding to the shake of the structure 10.
Further, the linear motion shaft 110 has a spiral groove G, a guide groove F, and a spiral groove G in the longitudinal direction along the longitudinal direction. When the linear motion shaft 110 is relatively displaced, the rotating body 120 is guided along the guide groove F or the spiral groove G. Thus, when the structure 10 is shaken, the reaction force when the linear motion shaft 110 and the rotating body 120 are relatively displaced changes corresponding to the shake of the structure 10.
A pair of linear motion shafts 110 are arranged in parallel, one linear motion shaft 110 has a spiral groove G and a cylinder H, and the other linear motion shaft 110 has a cylinder H and a spiral groove G. When the rotary body 120 is relatively displaced in the longitudinal direction, the first rotary body 120x is guided along the spiral groove G of the one linear motion shaft 110 corresponding to the relative displacement, and the second rotary body. Since the second state in which 120y is guided along the spiral groove G of the other linear motion shaft 110 is alternately repeated, the linear motion shaft 110 and the rotating body 120 are relatively moved when the structure 10 is shaken. The reaction force at the time of displacement changes corresponding to the shaking of the structure 10.
The rotating body 120 is guided along the spiral groove G having a predetermined lead provided along the longitudinal direction on the linear motion shaft 110, so that the rotational body 120 is rotatably guided. When the body 120 is relatively displaced in the longitudinal direction, the rotating body 120 is rotated, and the electromagnetic clutch 160 can be attached to and detached from the linear movement shaft 110 and the rotating body 120 in response to the relative displacement. In addition, the reaction force when the linear movement shaft 110 and the rotating body 120 are relatively displaced changes corresponding to the shaking of the structure 10.
The linear motion shaft 110 and the frame 130 of the damper 100 are connected to a pair of connecting portions where the structural body 10 is relatively displaced by the pair of connecting members 200, respectively. Since the angle formed by the imaginary line connecting the connecting points of the pair and the main displacement direction of the structure 10 is changed, when the structure 10 is shaken, the linear motion shaft 110 and the rotating body 120 are relatively displaced. The reaction force changes in response to the shaking of the structure 10.
In addition, since one of the pair of connecting members 200 is moved along the structural member of the structure 10, the angle formed between the imaginary line and the main displacement direction of the structure 10 is changed. When the structure 10 is shaken, a reaction force when the linear motion shaft and the rotating body are relatively displaced changes corresponding to the shake of the structure 10.

Adopting the above seismic isolation mechanism produces the following effects.
(1) When using a damper whose lead increases as the displacement increases.
○ As the relative displacement of the connection location increases, the apparent inertial force decreases, and the reaction force of the damper can reach its peak.
○ As the relative displacement of the connecting part increases, the apparent viscous resistance decreases, and the reaction force of the damper can reach its peak.
○ When used as a tuning damper, the apparent natural frequency can be changed according to the displacement, and the tuning frequency can be made variable according to the change. For example, the natural frequency can be lengthened when the vibration increases.
○ It can be applied to nonlinear skeleton curves such as RC.
(2) When the lead is made smaller as the displacement becomes larger.
○ The apparent viscous resistance can be increased as the relative displacement of the connection location increases. Therefore, it can be considered to be used as a fail-safe mechanism.
○ The initial frictional resistance can be increased. Therefore, it can be considered to apply to a trigger mechanism.
○ When used as a tuning damper, the apparent natural frequency can be changed according to the displacement, and the tuning frequency can be made variable according to the change. For example, the natural frequency can be shortened when the vibration increases.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the invention.
In the damper according to the first and second embodiments, the structure of the rotating body 120 has been described. However, the structure is not limited to this. For example, as disclosed in JP-A-5-263891, “screw shaft and nut and In a ball screw that is screwed through a plurality of balls, the screw lead of the screw shaft is partially changed and provided in series, and the ball is wound around the screw shaft along the screw lead to expand and contract in the axial direction. Adopted a “ball screw” structure that is housed in a ball seat inside the nut, and the ball return groove is connected to the ball groove on the screw shaft side on the nut side of the ball seat. May be.

D outer diameter G spiral groove F guide groove H cylinder P lead P1 first lead Pm intermediate lead P2 second lead 10 structure 15 mounting structure 100 damper 110 linear motion shaft 110x first linear motion shaft 110y second linear motion shaft 111 spiral part 111x first spiral part 111m intermediate spiral part 111y second spiral part 112 cylindrical part 112x first cylindrical part 112m intermediate cylindrical part 112y second cylindrical part 113 guide part 113x first guide part 113m intermediate guide part 113y second guide Part 115 Linear Motion Shaft Frame 120 Rotating Body 120x First Rotating Body 120y Second Rotating Body 121 Rotating Body Main Body 122 Rotating Body Ball 123 Dimple 124 Straight Line 125 Rotating member bearing 135 Rotating body frame 140 Viscous body 1 50 additional rotating member 160 electromagnetic clutch 200 connecting member 210 first connecting member 220 second connecting member

Japanese Patent Laid-Open No. 10-100955 JP-A-10-184757 JP 2000-017885 A JP 2003-138784 A JP 2004-239411 A JP 2005-180492 A JP 2005-207547 A JP 05-263891 JP 2009-029246 JP 2005-096587 A JP 2000-304097 JP-A-6-058006 JP 2005-264991 JP 2005-207647 A JP 2008-239068 A JP 2000-065180

Claims (26)

A damper,
A linear motion shaft that is a shaft body provided with a spiral groove that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface;
A rotating body guided along the spiral groove;
A frame that rotatably supports the rotating body;
With
When the linear motion body and the rotary body are relatively displaced in the longitudinal direction, the ratio of the linear motion displacement of the linear motion shaft to the rotational displacement of the rotary body is changed corresponding to the relative displacement.
Damper characterized by that. The linear motion shaft has a first spiral portion forming the spiral groove with the first lead in order along the longitudinal direction and a second spiral portion forming the spiral groove with a second lead;
The spiral groove of the first spiral part and the spiral groove of the second spiral part are connected without a step,
Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body is guided along the spiral groove between the first spiral portion and the second spiral portion. To be
The damper according to claim 1. The spiral groove having the first spiral portion forming the spiral groove having the first lead in order along the longitudinal direction, the intermediate spiral portion forming the spiral groove having the intermediate lead, and the second lead. A second spiral portion forming
The spiral groove of the first spiral portion, the spiral groove of the intermediate spiral portion, and the spiral groove of the second spiral portion are connected without a step,
Corresponding to the relative displacement when the linear motion body and the rotary body are relatively displaced in the longitudinal direction, the rotary body straddles the intermediate spiral portion between the first spiral portion and the second spiral portion. Guided along the spiral groove,
The damper according to claim 1. The lead changes from the first lead to the second lead through the intermediate lead along the longitudinal direction,
Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body is located between the spiral groove of the first lead and the spiral groove of the second lead. Guided along the spiral groove across the spiral groove of the intermediate lead,
The damper according to claim 1. The linear motion shaft has a cylindrical portion that forms a cylinder having an outer diameter that matches the spiral groove bottom diameter of the spiral groove in order along the longitudinal direction, and a spiral portion that forms the spiral groove,
Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body is guided between the cylindrical portion and the spiral portion following the spiral groove or the cylinder. The
The damper according to claim 1. A first cylindrical portion that forms a cylinder having an outer diameter that corresponds to a spiral groove bottom diameter of the spiral groove in order along the longitudinal direction, an intermediate spiral portion that forms the spiral groove, and the spiral groove; A second cylindrical portion forming a cylinder having an outer diameter corresponding to the spiral groove bottom diameter;
Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body straddles the intermediate spiral portion between the first cylindrical portion and the second cylindrical portion. Guided along the spiral groove or the cylinder,
The damper according to claim 1. A first spiral portion in which the linear movement shaft forms the spiral groove in order along the longitudinal direction; an intermediate cylindrical portion that forms a cylinder having an outer diameter that matches a spiral groove bottom diameter of the spiral groove; and the spiral groove. A second spiral portion to be formed,
Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body straddles the intermediate cylindrical portion between the first spiral portion and the second spiral portion. Guided along the spiral groove or the cylinder,
The damper according to claim 1. The linear motion shaft has a guide portion that forms a guide groove extending in the longitudinal direction in order along the longitudinal direction and a spiral portion that forms the spiral groove;
The guide groove of the guide part and the spiral groove of the spiral part are connected without a step,
When the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body is guided between the guide portion and the spiral portion along the spiral groove or the guide groove in accordance with the relative displacement. The
The damper according to claim 1. The linear motion shaft forms a first guide member that forms a guide groove extending in the longitudinal direction in order along the longitudinal direction, an intermediate spiral portion that forms the spiral groove, and a guide groove extending in the longitudinal direction along the longitudinal direction. And a second guide part
The guide groove of the first guide part, the spiral groove of the intermediate spiral part, and the guide groove of the second guide part are connected without a step,
Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body straddles the intermediate spiral portion between the first guide portion and the second guide portion. Guided along the guide groove or the spiral groove,
The damper according to claim 1. The linear motion shaft includes a first spiral portion that forms the spiral groove in order along the longitudinal direction, an intermediate guide portion that forms a guide groove extending in the longitudinal direction, and a second spiral portion that forms the spiral groove. ,
The spiral groove of the first spiral portion, the guide groove of the intermediate guide portion, and the spiral groove of the second spiral portion are connected without a step,
Corresponding to the relative displacement when the linear moving body and the rotating body are relatively displaced in the longitudinal direction, the rotating body straddles the intermediate guide portion between the first spiral portion and the second spiral portion. Guided along the spiral groove or the guide groove,
The damper according to claim 1. A damper,
A first spiral portion provided with a spiral groove that is a spiral groove having a first lead along the longitudinal direction on the outer peripheral surface and a cylinder having an outer diameter that matches the spiral groove bottom diameter of the spiral groove are formed. A first linear motion shaft that is a linear motion shaft having one cylindrical portion;
A second cylindrical portion that forms a cylinder having an outer diameter that matches the spiral groove bottom diameter of the spiral groove along the longitudinal direction and a spiral groove that is a spiral groove having a second lead along the longitudinal direction are provided. A second linear motion shaft that is a linear motion shaft having a second spiral portion;
The first linear motion shaft and the second linear motion shaft are parallel to each other so that the first spiral portion and the second cylindrical portion are parallel and the first cylindrical portion and the second spiral portion are parallel. A linear motion shaft frame to be fixed
A first rotating body that is a rotating body guided along the spiral groove of the first linear motion shaft;
A second rotating body which is a rotating body guided along the spiral groove of the second linear motion shaft;
A rotating body frame rotatably supporting each of the first rotating body and the second rotating body;
With
When the linear motion shaft frame and the rotating body frame are relatively displaced in the longitudinal direction, the first rotating body is guided along the spiral groove of the first spiral portion corresponding to the relative displacement. Alternately repeating the state and the second state in which the second rotating body is guided following the spiral groove of the second spiral part,
Damper characterized by that. A damper,
A linear motion shaft that is a shaft body provided with a spiral groove that is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface;
A rotating body guided along the spiral groove;
An additional rotating member that can rotate in synchronization with the rotating body;
An electromagnetic clutch capable of detaching the rotation of the rotating body and the rotation of the additional rotating member;
A frame that rotatably supports the rotating body and the additional rotating member;
A damper comprising: A seismic isolation mechanism provided in the structure,
A linear motion shaft, which is a shaft provided with a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface, a rotating body guided along the spiral groove, and the rotating body are rotated. A damper having a freely supporting frame;
A pair of connecting members for connecting the linear motion shaft and the frame to a pair of connecting locations that are relatively displaced in accordance with the shaking of the structure;
With
When the structure shakes, the ratio of the linear displacement of the linear motion shaft and the rotational displacement of the rotating body changes corresponding to the shaking,
A seismic isolation mechanism characterized by that. The linear motion shaft has a first spiral portion forming the spiral groove with the first lead in order along the longitudinal direction and a second spiral portion forming the spiral groove with a second lead;
The spiral groove of the first spiral part and the spiral groove of the second spiral part are connected without a step,
When the structure does not shake, the rotating body is guided following the spiral groove of one of the first spiral part or the second spiral part,
The rotating body is guided along the spiral groove between the first spiral portion and the second spiral portion in response to the swing when the structure swings.
The seismic isolation mechanism according to claim 13. The spiral groove having the first spiral portion forming the spiral groove having the first lead in order along the longitudinal direction, the intermediate spiral portion forming the spiral groove having the intermediate lead, and the second lead. A second spiral portion forming
The spiral groove of the first spiral portion, the spiral groove of the intermediate spiral portion, and the spiral groove of the second spiral portion are connected without a step,
When the structure does not shake, the rotating body is guided following the spiral groove of the intermediate spiral portion,
When the structure shakes, the rotating body is guided along the spiral groove across the intermediate spiral between the first spiral and the second spiral in response to the swing.
The seismic isolation mechanism according to claim 13. The lead changes from the first lead to the second lead through the intermediate lead along the longitudinal direction,
When the structure does not shake, the rotating body is guided along the spiral groove of the intermediate lead,
In response to the swing of the structure, the rotating body straddles the spiral groove of the intermediate lead between the spiral groove of the first lead and the spiral groove of the second lead. Imitated and guided,
The seismic isolation mechanism according to claim 13. The linear movement shaft has a cylindrical portion that forms a cylinder having an outer diameter that matches the spiral groove bottom diameter of the spiral groove in order along the longitudinal direction, and a spiral portion that forms the spiral groove;
When the structure does not shake, the rotating body is guided along one of the cylinder of the cylindrical part or the spiral groove of the spiral part,
The rotating body is guided between the cylindrical portion and the spiral portion following the spiral groove or the cylinder in response to the swing when the structure swings.
The seismic isolation mechanism according to claim 13. A first cylindrical portion that forms a cylinder having an outer diameter that corresponds to a spiral groove bottom diameter of the spiral groove in order along the longitudinal direction, an intermediate spiral portion that forms the spiral groove, and the spiral groove; A second cylindrical portion forming a cylinder having an outer diameter corresponding to the spiral groove bottom diameter;
When the structure does not shake, the rotating body is guided following the spiral groove of the intermediate spiral portion,
Corresponding to shaking when the structure shakes, the rotating body is guided following the spiral groove or the cylinder across the intermediate spiral part between the first cylindrical part and the second cylindrical part,
The seismic isolation mechanism according to claim 13. A first spiral portion in which the linear movement shaft forms the spiral groove in order along the longitudinal direction; an intermediate cylindrical portion that forms a cylinder having an outer diameter that matches a spiral groove bottom diameter of the spiral groove; and the spiral groove. A second spiral portion to be formed,
When the structure does not shake, the rotating body is guided following the cylinder of the intermediate cylindrical portion,
Corresponding to shaking when the structure shakes, the rotating body is guided following the spiral groove or the cylinder across the intermediate cylindrical portion between the first spiral portion and the second spiral portion.
The seismic isolation mechanism according to claim 13. The linear motion shaft has a guide portion that forms a guide groove extending in the longitudinal direction in order along the longitudinal direction and a spiral portion that forms the spiral groove;
The guide groove of the guide part and the spiral groove of the spiral part are connected without a step,
When the structure does not shake, the rotating body is guided following one of the guide groove of the guide part or the spiral groove of the spiral part,
The rotating body is guided along the spiral groove or the guide groove between the guide portion and the spiral portion in response to the swing when the structure swings.
The seismic isolation mechanism according to claim 13. The linear motion shaft forms a first guide member that forms a guide groove extending in the longitudinal direction in order along the longitudinal direction, an intermediate spiral portion that forms the spiral groove, and a guide groove extending in the longitudinal direction along the longitudinal direction. And a second guide part
The guide groove of the first guide part, the spiral groove of the intermediate spiral part, and the guide groove of the second guide part are connected without a step,
When the structure does not shake, the rotating body is guided following the spiral groove of the intermediate spiral portion,
The rotating body is guided along the guide groove or the spiral groove across the intermediate spiral portion between the first guide portion and the second guide portion in response to the swing when the structure swings. ,
The seismic isolation mechanism according to claim 13. The linear motion shaft includes a first spiral portion that forms the spiral groove in order along the longitudinal direction, an intermediate guide portion that forms a guide groove extending in the longitudinal direction, and a second spiral portion that forms the spiral groove. ,
The spiral groove of the first spiral portion, the guide groove of the intermediate guide portion, and the second spiral groove of the spiral portion are connected without a step,
When the structure does not shake, the rotating body is guided along the guide groove of the intermediate guide part,
The rotating body is guided along the spiral groove or the guide groove across the intermediate guide portion between the first spiral portion and the second spiral portion in response to the swing when the structure swings. ,
The seismic isolation mechanism according to claim 13. A seismic isolation mechanism provided in the structure,
A first spiral portion provided with a spiral groove that is a spiral groove having a first lead along the longitudinal direction on the outer peripheral surface and a cylinder having an outer diameter that matches the spiral groove bottom diameter of the spiral groove are formed. A first linear motion shaft that is a linear motion shaft having one cylindrical portion, and a second cylindrical portion that forms a cylinder having an outer diameter that coincides with the spiral groove bottom diameter of the spiral groove along the longitudinal direction; A second linear motion shaft that is a linear motion shaft having a second spiral portion provided with a spiral groove that is a spiral groove having a second lead along the first spiral portion and the second cylindrical portion in parallel A linear motion shaft frame for fixing the first linear motion shaft and the second linear motion shaft so that their longitudinal directions are parallel to each other so that the first cylindrical portion and the second spiral portion are in parallel; A first rotating body that is a rotating body guided along the spiral groove of the moving shaft, and a second rotating body that is guided following the spiral groove of the second linear movement shaft A damper having a rotating body and a rotary body frame for rotatably supporting each of said second rotary member and the first rotating body,
A pair of connecting members for connecting the linear motion shaft frame and the rotating body frame to a pair of connecting portions that are relatively displaced in accordance with the shaking of the structure;
With
When the structure swings, the first rotating body is guided along the spiral groove of the first spiral portion in response to the swing, and the second rotating body is the spiral of the second spiral portion. Alternately repeating the second state guided along the groove,
A seismic isolation mechanism characterized by that. A seismic isolation mechanism provided in the structure,
A linear motion shaft, which is a shaft body provided with a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface, a rotating body guided along the spiral groove, and the rotating body are synchronized with each other. A damper having a rotatable additional rotating member, an electromagnetic clutch capable of detaching and rotating the rotating body and the rotating rotating member, and a frame for rotatably supporting the rotating body and the additional rotating member. ,
A pair of connecting members for connecting the linear motion shaft and the frame to a pair of connecting locations that are relatively displaced in accordance with the shaking of the structure;
With
When the structure does not shake, the rotation of the rotating body and the rotation of the additional rotating member are separated,
When the structure is shaken, the electromagnetic clutch is operated, and the rotating body and the additional rotating member rotate in synchronization with the relative displacement.
A seismic isolation mechanism characterized by that. A seismic isolation mechanism provided in the structure,
A linear motion shaft, which is a shaft provided with a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface, a rotating body guided along the spiral groove, and the rotating body are rotated. A damper having a freely supporting frame;
A pair of connecting members that respectively connect the linear motion shaft of the damper and the frame to a pair of connecting portions that are relatively displaced in accordance with the shaking of the structure;
With
When the connecting member swings the structure, the angle between the imaginary line connecting the pair of connecting points and the main displacement direction of the structure can be changed corresponding to the swinging.
A seismic isolation mechanism characterized by that. When the structure shakes, one of the pair of connecting members moves along the structural member of the structure in response to the shaking, and the main line between the imaginary line connecting the pair of connecting points and the layer between the structures. Can change the angle made with the various displacement directions,
26. The seismic isolation mechanism according to claim 25.

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