JP2815152B2 - Floor support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a floor in which a floor is provided in a gymnasium, a soft sword dojo, a general apartment house, and various other buildings to provide vibration-proof and elastic properties to the floor. It relates to a support structure.

[Conventional technology]

For example, in a general gymnasium, if one part is a judo hall and the other part is a kendo hall and the other part is a place for other sports, the normal floor support structure will have elasticity characteristics and The anti-vibration characteristics were uniform, and the anti-vibration characteristics and elasticity characteristics were not varied according to the characteristics of various sports. For example, a Judo hall requires a floor that is about twice as soft as a Kendo hall in order to absorb large impacts such as throwing during a game. For this reason, when a kendo hall and a judo hall are set up in a general gymnasium, the floor of the kendo hall and the floor of the judo hall have to be constructed using different floor construction methods.

Also, the floor of the gymnasium of elementary schools is different from the elasticity of the floor when used by first graders and the elasticity of the floor when used by sixth graders. The softness was needed. Further, it is apparent from various research results that the optimum elasticity value required for the floor is different between volleyball and basketball.

[Problem to be solved]

As described above, the conventional floor support structure has to cope at the stage of the floor construction method in order to partially change the anti-vibration characteristics and the elastic characteristics, which is disadvantageous in terms of cost, and is used for one competition. There was a disadvantage that the floor area that could be practiced was halved and the number of people who could practice was limited. In other words, when a kendo hall and a judo hall are set up, if the judo hall is not used, it is difficult to use this judo hall as a kendo hall because the floor construction method itself is different. Was. Further, the elasticity characteristics of the floor cannot be easily changed according to the age and the type of the user who competes on the floor.

Accordingly, an object of the present invention is to provide a floor support structure that can arbitrarily change the elasticity and vibration isolation characteristics of a floor.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a floor base material, a floor base, and a floor base material provided between the floor base material and supporting the floor base material from below, thereby providing the floor base material with vibration isolation and elasticity characteristics. A floor support structure having an elastic body, wherein the elastic body is provided with a space therein at an appropriate place on a floor base receiving a load from a floor base material, and is integrated with an outer cylinder; The body space is divided into at least two chambers and communicated with the orifice, the chamber is filled with an electrorheological fluid, and electrodes are provided between the chambers to control the electrorheological fluid.

[Action]

For example, in the case of a gymnasium floor, the floor is constructed using the same method as the floor method, and the vibration damping characteristics and elasticity of the floor are controlled by controlling the electrorheological fluid inside the elastic body according to the age of the user or the type of competition. If the characteristics are changed, a floor suitable for the age to be used and a floor adapted to the type of the competition can be realized, which leads to securing easiness of the competition and safety.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, a space 2 is formed inside an elastic body 1 provided at a place where a load is applied to the floor, and the space 2 is defined by a partition wall 3 into two chambers. These two chambers are communicated with each other by an orifice 4 formed in the partition wall 3, and an electrode 5 is provided at the location of the orifice 4. These electrodes 5 have lead wires 51
Are connected to a power supply or control circuit (not shown). The wall of one chamber is formed by a diaphragm 6. The elastic body 1 is adhered to the outer cylinder 7 and the inner cylinder 8, a partition is formed on the inner peripheral surface of the inner cylinder 8, and a concentric orifice 4 is formed in the partition. A support plate 9 is adhered to the upper surface of the elastic body 1, and the support plate 9 supports the floor. The electrorheological fluid filled in the space is ER
It is also called a fluid, a fluid whose viscosity increases according to the strength of the electric field. Therefore, it is possible to change the viscosity of the electrorheological fluid in the orifice 4 by supplying electricity to the electrode 5 and adjust the flow resistance. Such an electrorheological fluid is as described in JP-A-63-72934. The impact on the floor is transmitted to the support plate 9, and when the elastic body 1 receives the impact, the electrorheological fluid in the space defined by the two moves through the orifice 4, and vibrates due to the passage resistance during the movement. Not only is absorbed, but also the electrorheological fluid changes its viscosity when the electrode 5 is energized. Such viscosity can be changed by controlling the amount of current, so that a wide range of vibration can be absorbed, and the characteristics of the elastic body can be changed.

FIG. 2 shows a second embodiment in which a support bolt 10 is attached to a support body 9. The floor is supported at the upper end of the support bolt 10, and the height of the floor is finely adjusted by adjusting the support bolt 10. It is something that can be done. In the second embodiment, the structure of the orifice 4 is changed. In the space, a first chamber 2A and a second chamber 2B are defined by a partition 3, which has a plate-like disk shape, and forms slit-like passages 41, 42 in the partition 3. Passage 4
An orifice 4 is formed between 1,42. In FIG. 2, reference numeral 11 denotes a power supply, and reference numeral 12 denotes an insulated wiring. By setting the magnitude of the voltage applied to the electrode 5 appropriately, the electrorheological fluid becomes so hard that liquid exchange through the orifice 4 is almost impossible.

The structure of the orifice 4 which defines each space 2 and communicates each space is not limited to the structure shown in FIGS. 1 and 2, but may be any of Japanese Patent Application Laid-Open Nos. 61
It is also possible to adopt an orifice structure as described in JP-A-74930 or JP-A-63-72934.

The embodiment shown in FIG. 3 is an embodiment in which a steel floor set including a large pulling material 13 and a joist material 14 as a base material constituting a floor is provided between a bundle 15 and a support bolt 10 for level adjustment. Alternatively, an elastic body 1 having a space 2 as shown in FIG. 2 is provided.

The embodiment shown in FIG. 4 shows a state in which a receiving plate 17 is mounted on a supporting bolt 10 and a floor base material 16 is supported by the receiving plate 17, and an elastic body having a space 2 at the lower end of the supporting bolt 10. 1 is provided.

The electrorheological fluid (ER fluid) filled in the space 2 of the elastic body 1 is preferably silica gel, silicone oil, surfactant, polymethacrylic acid, sorbant, or the like.

The graph shown in FIG. 5 shows the load applied to the support plate 9 and its displacement using the graph shown in FIG. 1, and the curve indicated by the symbol A represents the state where the voltage is not applied to the electrode 5 and the orifice 4 is fully opened. In this case, ks = 14 kg / mm, and the one indicated by reference symbol B is obtained by applying a voltage of 3 kV / mm to bring the orifice 4 into a fully closed state, where ks = 35 kg / mm. The state indicated by A in this graph is suitable as a floor support structure for a judo hall, and the state shown in B is suitable as a floor support structure for a kendo hall. By changing the voltage between the electrodes 5, the spring constant between FIGS. 5A and 5B can be set arbitrarily.

The graph shown in FIG. 6 is a graph of Kd and tan δ for each frequency from the fully open orifice to the fully closed orifice. By electrically adjusting the opening and closing of the orifice 4, the anti-vibration characteristics can be changed instantaneously (about 10 mm sec).
In addition, by adjusting the opening / closing degree of the orifice 4 (adjusting the voltage), it can be arbitrarily changed from fully open to fully closed.

The floor support structure described above can also be applied to seismic isolation rubber used in a building's seismic isolation structure.

Further, even in a section where a specific game or the like is performed, a part can be made hard or soft depending on the nature of the game or the like.

〔effect〕

As described above, according to the present invention, an elastic body having a space inside is provided at a location where a load from a floor base material is received, and the space of the elastic body integrated with the outer cylinder is defined in at least two chambers. And communicate with the orifice, fill the chamber with an electrorheological fluid, and provide electrodes between the chambers to control the electrorheological fluid, so even floors finished with the same floor construction method The elasticity can be easily changed partially or entirely, and one floor can be used for multiple purposes. Further, it is easy to adjust the elasticity of the floor in accordance with the age and level of the user and also in accordance with the event of the competition. Furthermore, a soundproof floor tuned to the natural frequency of the building slab can be easily configured.

[Brief description of the drawings]

FIG. 1 is a partially sectional perspective view of a first embodiment showing an example of a structure of an elastic body used in a floor support structure according to the present invention, and FIG. 2 is a structure of an elastic body used in a floor support structure according to the present invention. FIG. 3 is a cross-sectional view of a second embodiment showing an example, FIG. 3 is a perspective view showing an example of a floor support structure in the present invention, FIG. 4 is a perspective view showing another example of a floor support structure in the present invention, FIG. FIG. 6 is a graph showing the displacement with respect to the load with and without applying a voltage to the electrode. FIG. 6 is a graph showing the Kd and tan δ for each frequency from the fully opened orifice to the fully closed orifice. 1 ... elastic body, 2 ... space, 2A, 2B ... chamber, 3 ... partition wall, 4 ... orifice, 5 ... electrode.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04F 15/18 601 F16F 15/02

Claims (1)

(57) [Claims] 1. A floor base material, a floor base, and a floor base material provided therebetween, which supports the floor base material from below to provide the floor base material with vibration-proofing properties.
An elastic body (1) for imparting elasticity to the floor support structure, wherein the elastic body (1) is provided at an appropriate position on a floor base receiving a load from a floor base material (13, 14, 16). The space (2) of the elastic body (1) is provided with a space (2) therein and integrated with the outer cylinder (7).
2B), communicate with the orifice (4), fill the chambers (2A, 2B) with electrorheological fluid, and provide an electrode (5) between each chamber (2A, 2B) to provide an electrorheological fluid. A floor support structure, characterized in that the floor support structure is configured to control the floor.