JPH0830512B2 - Seismic isolation device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a seismic isolation device for supporting various seismic isolation-requiring articles and devices or floors of various buildings while protecting them from earthquakes and other vibrations. Is.

[Prior Art] Conventionally, as a seismic isolation device, what supports a floor is basically proposed by forming legs in the lower part of the plate and attaching rubbers to the lower ends of these legs. There is.

[Problems to be Solved by the Invention] The seismic isolation device is integrated with the floor and cannot be freely used for seismic isolation of various objects. Furthermore, it is not possible to sufficiently deal with horizontal shaking due to the mechanism.

It is an object of the present invention to provide a device that can easily provide a seismic isolation action to various seismic isolation targets such as a floor of a building and various articles and devices.

[Means for Solving the Problems] The gist of the configuration of the present invention is that two plate bodies are slidably joined to each other, and a recess is formed on each of the facing sides of the plate bodies. Is a seismic isolation device in which elastic traction means for elastically pulling an object is installed, and the elastic traction means have a difference in elasticity, and the traction parts of both elastic traction means are coupled by a coupling means. In the above, the elastic traction means is configured by a mainspring spring having an outer end fixed to an inner wall of the recess, a rotary shaft coupled to the inner end of the mainspring spring, and a drum fixed to the rotary shaft. In the seismic isolation device, the connecting means is a rope in which each end is fixed to both the drums and each end is wound halfway.

Each of the plate bodies can freely adopt various shapes such as a square shape, a polygonal shape, and a circular shape when viewed from the plane direction.

The upper plate can be configured in common with a part of the support target. For example, when the floor member is to be supported by the seismic isolation device, it is appropriate that the upper plate serves as the floor plate of the floor member. In this case, it is appropriate to construct the upper plate in a square shape such as a square, and the lower plate should have a smaller vertical and horizontal size than the upper plate, and these should be laid on the floor base. At this time, it is preferable that a protective space for an electric wire or the like can be formed on the side of the lower plate body.

In this case, a decorative plate can be attached to the upper surface of the upper plate.

In any case, it is appropriate to attach a non-slip rubber plate or the like to the lower surface of the lower plate.

Further, a smooth surface is formed between the upper and lower plate members facing each other. This can be constructed by coating the surface with a tetrafluoroethylene resin or the like.

Further, since each of the recesses is a space into which the elastic traction means is inserted, any size and shape suitable for the recess may be used. That is, it is suitable to form a circular hole having a diameter slightly larger than the diameter of the mainspring, which is the elastic traction means.

[Operation] Since the present invention is configured as described above, a plurality of it is used to support the floor inside it in various buildings or to support various articles or devices, It can be used to dampen earthquakes and other sway and protect the object.

For example, as described above, when supporting the floor member with the upper plate in common with the floor plate, the upper plate of the adjacent seismic isolation device is joined to each other at its side while the seismic isolation device is placed on the floor substrate. To place. If a rubber plate or the like for preventing slippage is attached to the lower surface of the lower plate, it may be simply placed. When the non-slip member is not attached, it is appropriate to lay a rubber sheet or the like on the floor base to prevent slipping.

In this way, the seismic isolation device is arranged in the required area while joining the upper plates together at their side ends. It should be noted that it is necessary to leave a slight gap at the outer edge of the installation area of the floor plate, that is, at a position adjacent to the wall surface or the like, and to dispose a cushion member in the gap.

Therefore, the seismic isolation device of the present invention can be installed very easily.

Further, when the floor is configured by the floor member incorporating the seismic isolation device as described above, when vibration or swing is transmitted to the floor base due to an earthquake or the like, the seismic isolation action is generated as follows.

That is, since the upper and lower plates are slidably joined to each other and are connected by the elastic traction means respectively installed in the respective recesses and the coupling means for coupling the traction portions to each other, the above vibration or swing is caused. Accordingly, the plates can slide relative to each other within the range permitted by the elastic traction means. However, the above-mentioned vibration or swing transmitted to the floor base is substantially blocked here.

In particular, since there is a difference in elasticity between the two elastic traction means, for small weak vibrations or oscillations, the upper and lower plates are opposed to each other against the weak elastic one of the elastic traction means. A relative slide motion will be performed. In addition, in addition, when a strong large vibration or swing is transmitted to the floor substrate, the upper and lower plates move in sliding motion against the other one of the elastic pulling means having strong elasticity. Therefore, it is possible to appropriately impart a damping effect to a wide range of vibrations or oscillations.

Further, when the upper plate is largely displaced from the lower plate due to a large vibration or swing, the upper plate is first pulled back partway due to the strong elasticity of the elastic pulling means.
Subsequently, due to the weak elasticity of the elastic traction means, they are further pulled back until their centers coincide with each other. Therefore, the upper plate is not displaced from the original position after the end of the swing or vibration.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, a seismic isolation device is incorporated in the floor member.

As shown in FIGS. 1 to 3, a square upper plate 1a viewed from a plane and a square lower plate 1b similarly viewed from a lower surface which are smaller than this are slidably faced to each other, and Circular recesses 2a, 2b are formed in the center of the surfaces of the 1a and the lower plate 1b that face each other, as viewed from the bottom surface or the plane.

In particular, as shown in detail in FIG. 2, the springs 3a and 3b are installed in the recesses 2a and 2b, respectively, and the outer ends of the springs are recessed in the recesses 2a and 3b.
It is fixed to a part of the inner wall of 2b, and the inner end is fixed to the rotating shafts 4a and 4b.

The one rotating shaft 4a has an upper end rotatably supported by a bearing 5a at the center of the inner surface of the recess 2a, a drum 6a is fixedly provided on the lower end side, and a partition is provided between the drum 6a and the mainspring 3a. It is rotatably supported by a bearing 8a fixed to 7a. Further, the rope 9 is slightly wound around the drum 6a after fixing one end thereof. The drum 6a has a flange on the lower end side bent downward toward the outer periphery in a curved shape.

The other rotary shaft 4b and the structure attached thereto are just upside down from the rotary shaft 4a. More specifically, the lower end of the rotating shaft 4b is placed in the center of the inner surface of the recess 2b.
It is rotatably supported by 5b, and a drum 6b is fixedly installed on the upper end side.
A bearing 8b fixed to the partition wall 7b rotatably supports between the drum 6b and the main spring 3b. The rope 9 is slightly wound around the drum 6b after the other end is fixed. It should be noted that the drum 6b has a flange on the upper end side that is curved upwardly toward the outer periphery.

The springs 3a and 3b have the former having a strong elasticity and the latter having a weak elasticity.

Further, the upper plate 1a and the lower plate 1b respectively form smooth surfaces 10a and 10b on the surfaces facing each other. Above smooth surface 10a, 10b
In this example, is formed by coating a tetrafluoroethylene resin.

Further, on the lower surface of the lower plate 1b, rubber plates 11, 11 for slip prevention are provided.
And the decorative plate 12 is attached to the upper surface of the upper plate 1a.

In addition, as shown in FIG. 1 and FIG. 3, connecting protrusions 13 and 13 are provided so as to project on two adjacent sides of the upper plate 1a, and other floors are provided on the other two adjacent sides. Connection recesses (14, 14) that fit into the connection protrusions (13) of the upper plate (1a) of the member are formed.

In this embodiment, since it is configured as described above, it is convenient to construct a floor for damping an earthquake or other shaking in a building.

First, in the target area that composes the floor, as in the general case,
As shown in FIG. 3, a flat floor base 15 is constructed. And the floor that adopted this seismic isolation device, on the floor base 15 above,
The above-mentioned floor member incorporating the appropriate number of seismic isolation devices is stretched and configured.

As shown in FIG. 3, the floor member is fitted with the upper plate 1a of the adjacent floor members, and the lower plate 1b is fitted with the connecting projections 13 and the connecting recesses 14 of the respective sides. Then, the floor is constructed by sequentially arranging them on the floor base 15. Even if the lower plate 1b of the floor member is placed on the floor base 15 in this manner, it will not easily move due to the action of the rubber plates 11, 11 even by vibration or rocking.

The floor member has an outer edge of the installation area, that is, a portion of the peripheral wall that is not installed, and a cushion member is installed at this position.

However, a floor member incorporating the seismic isolation device can construct a floor very easily.

In addition, the floor constituted by this floor member acts as follows when vibration or swing is transmitted to the floor base 15 due to an earthquake or the like.

That is, the upper plate 1a and the lower plate 1b are the smooth surfaces 10a, 1 facing each other.
It is slidably joined by 0b and is concave
Mainspring springs 3a, 3b and rotating shafts respectively arranged on 2a, 2b
The upper plate 1a and the lower plate 1b are connected to each other via the drums 4a, 4b, the drums 6a, 6b and the rope 9, so that the main spring 3a,
They can slide relative to each other within the range allowed by 3b. However, the upper plate 1a is relatively slid in the above range according to the vibration or the swing,
The vibration or swing transmitted to the floor base 15 can be interrupted here.

In particular, since the lower spring spring 3b has a weak elasticity, if the upper plate 1a relatively vibrates or rocks due to a small weak vibration or rocking, the rope is pulled,
The rotary shaft 4b and the drum 6b fixed to the rotary shaft 4b rotate against the lower spring spring 3b, the rope 9 is pulled out, and relative vibration or swing of the upper plate 1a and the lower plate 1b is allowed. It

In addition to this, even stronger strong vibrations or vibrations are
When it is transmitted to 15, if the drum 6b coupled to the lower spring spring 3b is unwound to the end, this time, the rope 9 cannot be unwound from the drum 6b. The rotary shaft 4a and the drum 6a fixed to the rotary shaft 4a are unwound and rotated, and the rope 9 is further pulled out, so that relative vibration or swing between the upper plate 1a and the lower plate 1b is further increased. Greatly tolerated.

Therefore, the upper plate 1a can perform relative vibration or rocking appropriately corresponding to a wide range of vibration or rocking, so that a sufficient damping effect can be obtained.

After the end of the vibration or swing, the upper plate 1a that has largely deviated from the original position due to the larger vibration or swing is pulled back toward the original position to the original position by the strong elasticity of the upper spring spring 3a. Is also pulled back by the weak elasticity of the spring spring 3b below. Therefore, the upper plate 1a does not remain in the displaced position after the end of the swing or the like.

[Effect of the Invention] According to the present invention, a floor of a building and other articles or devices can be easily supported, and when an earthquake or other vibration occurs,
It is possible to impart a seismic isolation effect that significantly blocks vibrations, rocking, etc., to members located above this.

Further, after the end of the swing or the like, the action of returning the upper member displaced from the original position to the original position is sufficient.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a schematic vertical sectional view of the same, FIG. 2 is an enlarged vertical sectional view of the upper plate and the lower plate in the vicinity of the recess, and FIG. It is a schematic sectional drawing of the installed state. 1a …… upper plate, 1b …… lower plate, 2a, 2b …… recessed part, 3a, 3b ……
Mainspring, 4a, 4b …… Rotating shaft, 5a, 5b, 8a, 8b ……
Bearings, 6a, 6b ... Drum, 7a, 7b ... Partition, 9 ... Rope, 10a, 10b ... Smooth surface, 11 ... Rubber plate, 12 ... Decorative plate,
13 …… Connection protrusion, 14 …… Connection recess, 15 …… Floor base.

Claims (1)

[Claims] Claims: 1. Two plate bodies are slidably joined to each other to form recesses on opposite sides of the plate bodies, and each recess is provided with an elastic traction means for elastically pulling an object. In a seismic isolation device in which the elastic pulling means have different elasticities from each other, and the pulling parts of both elastic pulling means are connected by a connecting means, the elastic pulling means is attached to the inner wall of the recess. The mainspring is fixed at the outer end, the rotary shaft is connected to the inner end of the mainspring, and the drum is fixed to the rotary shaft. And a seismic isolation device consisting of a rope wound from each end to the middle.