JP4847915B2 - Temperature change tracking type vibration control mechanism - Google Patents

Description

  The present invention relates to a temperature change tracking type vibration control mechanism.

As a seismic control mechanism used in buildings, etc., an acrylic viscoelastic body is interposed between the plate parts, and the vibrational energy is absorbed by shearing the viscoelastic body by the relative displacement of the plate parts during an earthquake. Various kinds of devices designed to attenuate shaking of buildings and the like have been provided. In addition, a viscous body that absorbs vibration energy is also provided.
JP 2006-152788 A

  However, viscoelastic bodies and viscous bodies used in the vibration control mechanism are highly temperature-dependent, and in regions where the temperature changes greatly during the four seasons, the properties change depending on the season and perform stable and effective vibration control throughout the year. There is a problem that it is difficult to make.

  In view of the above problems, the present invention uses a temperature-dependent viscoelastic body or a viscous body whose properties change depending on temperature as a vibration energy absorption element, and is stable and effective throughout the year. It is an object to provide a vibration control mechanism capable of performing a vibration control action.

The above problem is that in the vibration control mechanism designed to absorb the vibration energy in the viscoelastic body,
A plurality of the viscoelastic bodies are provided, and are switched between a first state where all or a part of them absorbs vibration energy and a second state where a smaller part absorbs vibration energy. A switching mechanism is provided,
A control mechanism is provided that causes the switching mechanism to switch states so as to form the first state above a certain temperature and form the second state below that temperature. Solved by the vibration control mechanism.

  In this seismic control mechanism, the first state is formed at a temperature higher than the above constant temperature, and when an earthquake occurs, all or part of the plurality of viscoelastic bodies absorbs vibration energy, When the second state is formed at a low temperature lower than the above constant temperature and an earthquake occurs, a part less than the first state absorbs vibration energy, so the properties of the viscoelastic body depend on the temperature. Even if it changes, stable and effective seismic control can be performed throughout the year.

In addition, the above problem is in a vibration control mechanism designed to absorb the vibration energy in the viscoelastic body and / or the viscous body,
A first state in which the whole or a part of the viscoelastic body and / or the viscous body absorbs vibration energy principally, and a second state in which a smaller part of the viscoelastic body and / or viscosity body absorbs vibration energy mainly. A switching mechanism for switching to the state of
A control mechanism is provided that causes the switching mechanism to switch states so as to form the first state above a certain temperature and form the second state below that temperature. The same problem is solved by the vibration control mechanism (second invention).

  That is, the element that absorbs vibration energy is not limited to a viscoelastic body, and may be a viscous body, or may be both a viscoelastic body and a viscous body. In addition, a plurality of these vibration energy absorption elements may be provided, or one may be provided, and the words “all” and “part” are all or part of the plurality. , The meaning of all or part of one, and the meaning including both of them.

  In the first and second inventions, it is preferable that the control mechanism includes a shape memory spring, and the switching mechanism includes an operating body that operates by the shape memory spring (third invention). In this case, it is possible to perform stable and effective vibration control throughout the year by a simple switching control mechanism.

  Since the seismic control mechanism of the present invention is as described above, it uses a temperature-dependent viscoelastic body or a viscous body whose properties change with temperature as an element for absorbing vibration energy, and is stable throughout the year. Effective seismic control

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  The first embodiment shown in FIGS. 1 to 3 is a case where the vibration control mechanism of the present invention is incorporated in the vibration control device 2 of the vibration control wall panel 1 as shown in FIG. As shown in FIG. 3 (a), the wall panel 1 has an upper rigid body 4 integrally provided in a suspended state on the upper side of a rectangular annular frame 3, and a lower rigid body 5 integrally formed in a raised state on the lower side. The upper and lower rigid bodies 4 and 5 are jointed via the vibration control device 2 in the rectangular annular frame 3, and as shown in FIG. When the rigid bodies 4 and 5 are displaced relative to each other in the left-right direction, the acrylic viscoelastic body 6 provided in the vibration control device 2 undergoes shear deformation to absorb vibration energy.

  As shown in FIG. 1A, the vibration control device 2 includes an upper member 7 that is fastened to the upper rigid body 4 and a lower member 8 that is fastened to the lower rigid body 5. The two plate portions 8a and 8b are provided in a rising state, and the upper member 7 is provided with three plate portions 7a, 7b and 7b in a suspended state from the upper side, and the plate portions 8a and 8b on the lower member 8 side. And the plate portions 7a, 7b, 7c on the upper material 7 side are alternately arranged, and a total of four viscoelastic bodies 6 are bonded between the plate portions 7a, 8a, 7b, 8b, 7c. When the two plate portions 8a and 8b on the lower member 8 side and the three plate portions 7a, 7b and 7c on the upper member 7 side are displaced relative to each other due to an interlayer displacement caused by an earthquake, So that the viscoelastic material 6 ... shears and absorbs vibration energy It is.

  The vibration control device of the present invention is incorporated in the vibration control device 2. In the vibration control device 2, the upper member 7 includes a central plate portion 7 b integrated with the upper member 7 and front and rear plate portions. 7a and 7c are held so as to be slidable in the left-right direction with respect to the central plate portion 7b.

  As shown in FIG. 1B, the base plate 7b at the center faces the bottomed hole 9 that opens to face the front plate 7a and the rear plate 7c. 1 is provided, and the front and rear plate portions 7a and 7c are provided with lock holes 10 and 10 that face the opening portions of the bottomed holes 9 and 9, respectively. As shown in (b) to (d), when the lock pins 11, 11 as the operating bodies set in the bottomed holes 9, 9 advance into the lock holes 10, 10, the front and rear plate portions 7 a, 7c is locked to the central plate portion 7b, and the three plate portions 7a, 7b, 7c are integrated, and the pins 11, 11 are withdrawn from the lock holes 10, 10, thereby the front and rear plate portions 7a, 7c. Is unlocked and the three plate portions 7a 7b, are adapted to integrate the 7c is released, it constitutes a switching mechanism.

Further, a first shape memory spring 12 as a control means manufactured using a shape memory alloy or the like is interposed between the bottom surface of one bottomed hole 9 and one lock pin 11, and the other A second shape memory 13 is interposed between the bottom surface of the bottomed hole 9 and the other lock pin 11, and the first shape memory spring 12 maintains an extended state at a temperature of 22.5 ° C. or more, for example. The second shape memory spring 13 maintains an extended state at a temperature of, for example, 7.5 ° C. or higher, and maintains a shortened state at a temperature lower than that temperature. It consists of things to maintain,
In the summer, as shown in FIG. 1B, both the first and second shape memory springs 12 and 13 maintain the extended state, and both the front and rear plate portions 7a and 7c are centered by the lock pins 11 and 11, respectively. Is integrated with the plate portion 7b of
In the intermediate period, as shown in FIG. 1C, the first shape memory spring 12 maintains the shortened state, the second shape memory spring 13 maintains the expanded state, and only the front plate portion 7a is in the center. Is integrated with the plate portion 7b of
In winter, as shown in FIG. 1 (d), the first and second shape memory springs 12 and 13 are both kept in a shortened state, and the front and rear plate portions 7a and 7c are both unlocked. Has been made.

In the above-described vibration control mechanism, in the summer, as shown in FIG. 2 (a), the three plate portions 7a, 7b, 7c of the upper member 7 in the vibration control device 2 are integrated into a first state. Occurs, all of the four viscoelastic bodies 6 ... undergo shear deformation and absorb vibration energy,
In the middle period, as shown in FIG. 2 (b), the second plate 7a, 7b of the three plate portions 7a, 7b, 7c of the upper member 7 in the vibration control device 2 is integrated. When an earthquake occurs, three of the four viscoelastic bodies 6 ... undergo shear deformation and absorb vibration energy,
In the winter season, as shown in FIG. 2C, the third plate portion 7a, 7b of the upper member 7 of the vibration control device 2 is unlocked in the front and rear plate portions 7a, 7c. When an earthquake occurs, two of the four viscoelastic bodies 6 undergo shear deformation and absorb vibration energy,
As a result, while using the temperature-dependent viscoelastic body 6 whose properties change depending on the temperature as an element for absorbing vibration energy, it is possible to perform stable and effective vibration control throughout the year. This can be realized by a simple switching control mechanism using the shape memory springs 12 and 13 and the lock pins 11 and 11.

  In the second embodiment shown in FIGS. 4 (a) and 4 (b), lock holes 10 and 10 are provided in the central plate portion 7b of the upper material constituting the vibration control device, and the through holes 9 are provided in the front and rear plate portions 7a and 7c. , 9 are provided, and the lock pins 11, 11 and the shape memory springs 12, 13 are inserted from the outside through the through holes 9, 9, and the through holes 9, 9 are closed by bolts 14, 14 from the outside. The lock pins 11 and 11 and the shape memory springs 12 and 13 can be easily assembled. Others are the same as in the first embodiment.

  In the third embodiment shown in FIGS. 4C and 4D, the tip end portion 11a of the lock pin 11 is formed in a convex spherical shape, and a smooth switching operation can be realized. Others are the same as in the first embodiment.

  In the fourth embodiment shown in FIG. 5, as shown in FIG. 5 (a), the upper member 7 is provided with two front and rear plate parts 7a, 7b, and three viscoelastic bodies 6 are provided. In the upper member 7, the rear plate portion 7b is integrated with the upper member 7, the front plate portion 7a is slidably held in the left-right direction, and the front and rear plate portions 7a, 7b are the first shape memory springs. 12 and the lock pin 11 can be integrated or released from the integration, and the front plate portion 8a of the lower member 8 is integrated with the lower member 8. At the same time, the rear plate portion 8b is slidably held in the left-right direction, and the front and rear plate portions 8a, 8b are integrated or released by the second shape memory spring 13 and the lock pin 11. Was made possible There.

In the summer, as shown in FIG. 5A, the two plate portions 7a and 7b of the upper member 7 in the vibration control device 2 are integrated, and the two plate portions 8a and 8b of the lower member 8 are also integrated. When an earthquake occurs, all three viscoelastic bodies 6 undergo shear deformation and absorb vibration energy,
In the interim period, as shown in FIG. 5 (b), when the integration of only the rear plate portion 7b of the upper member 7 in the vibration control device 2 is released and an earthquake occurs, the three viscoelastic bodies 6 ... Two of them undergo shear deformation to absorb vibration energy,
In winter, as shown in FIG. 5C, the rear plate portion 7b of the upper member 7 and the rear plate portion 8b of the lower member 8 in the vibration control device 2 are released from being integrated, and an earthquake occurs. Then, one of the three viscoelastic bodies 6 is subjected to shear deformation and absorbs vibration energy. Others are the same as in the first embodiment.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the case where there are the first, second, and third states to be switched by the switching mechanism has been shown, but it may be configured in the first and second states, It may be configured with four or more states as long as it is configured with at least first and second states that are different from each other.

  In the above embodiment, the shape memory spring is used as the control mechanism, and the lock pin operated by the shape memory spring is used as the switching mechanism component. However, the control mechanism and the switching mechanism are not limited. Instead, various mechanisms may be employed.

  In the above embodiment, the case where the vibration control mechanism of the present invention is applied to a vibration control device having a specific structure provided in a vibration control wall panel having a specific structure has been described. Needless to say, it can be applied.

  Furthermore, in the above embodiment, the case where a viscoelastic body is used as an element that absorbs vibration energy has been shown. However, in the second invention, a viscous body or both a viscous body and a viscoelastic body are used as vibration energy absorption elements. It is good also as the structure used. Further, for example, when a viscous body is used as the vibration energy absorbing element, a plurality of viscous bodies may be provided, or a single viscous body may be provided. The term “part” means “all” or “part” in one viscous body. For example, the depth of the resistor and the direction of the resistor in the viscous body accommodated in the container are set as described above. The state may be switched by changing the switching mechanism or the control mechanism as described in the embodiment.

FIG. 1A is an enlarged cross-sectional side view taken along the line II of FIG. 3A, and FIG. 2B is a cross-sectional side view showing the switching control mechanism portion further enlarged. FIG. 1, (C) and (D) are sectional side views showing the operating state of the switching control mechanism part together with FIG. FIGS. 1A to 1C are cross-sectional side views each showing an operating state of the vibration control mechanism. FIG. 1 (a) is a front view showing the damping wall panel, and FIG. 2 (b) is a front view showing its operating state. Figures (a) and (b) are cross-sectional side views showing the vibration control mechanism of the second embodiment together with its operating state. Figures (c) and (d) show the vibration control mechanism of the third embodiment. It is a cross-sectional side view shown with an operation state. Drawing (a)-figure (C) are the section side views showing the damping mechanism of a 4th embodiment with the operation state.

Explanation of symbols

6 ... Viscoelastic body 11 ... Lock pin (actuator / switching mechanism)
12, 13 ... shape memory spring (control mechanism)

Claims (2)

In the vibration control mechanism designed to absorb the vibration energy in the viscoelastic body,
A plurality of the viscoelastic bodies are provided, and are switched between a first state where all or a part of them absorbs vibration energy and a second state where a smaller part absorbs vibration energy. A switching mechanism is provided,
A control mechanism is provided that causes the switching mechanism to switch states to form the first state above a certain temperature and to form the second state at a temperature below that temperature ; and
The control mechanism includes a shape memory spring, and the switching mechanism includes an operating body that operates with the shape memory spring . In the vibration control mechanism designed to absorb the vibration energy in the viscoelastic body and / or the viscous body,
A first state in which the whole or a part of the viscoelastic body and / or the viscous body absorbs vibration energy principally, and a second state in which a smaller part of the viscoelastic body and / or viscosity body absorbs vibration energy mainly. A switching mechanism for switching to the state of
A control mechanism is provided that causes the switching mechanism to switch states to form the first state above a certain temperature and to form the second state at a temperature below that temperature ; and
The control mechanism includes a shape memory spring, and the switching mechanism includes an operating body that operates with the shape memory spring .

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