JP4565526B1 - Seismic control - Google Patents

Abstract

PROBLEM TO BE SOLVED: Even if it is buried in a wall of a building for a long period of time, its function is not lowered, it has exactly the same effect on compressive force and tensile force acting on braces, and low-load vibration works Develop seismic bracing that can absorb the vibration even in some cases.
Half of the even number of seismic control units combining a spring made of a synthetic resin corresponding to a low load and a metal coil spring corresponding to a high load is a compression force and a half is a compression force. Provide seismic bracing that absorbs vibration in response to tensile force.

[Selection] Figure 1

Description

The present invention relates to a seismic bracing having a damping mechanism therein, and more particularly to a seismic bracing having the following configuration.
<Configuration 1>
It is a seismic control bracing that has a seismic control mechanism inside,
The vibration control mechanism is a combination of an even number of vibration control units that combine a spring that supports low loads and a spring that supports high loads.
The spring corresponding to low load is made of synthetic resin with a hole in the center and has a groove on the outer periphery to prevent deformation,
The spring corresponding to the high load is a metal coil spring,
The casing is composed of a cylindrical sleeve and a right end cap and a left end cap that are screwed to both ends of the sleeve, and a shielding disc is fixed integrally with the sleeve at the center of the sleeve,
A circular hole is drilled in the center part of the left end cap and right end cap, the left movable shaft is inserted into the circular hole drilled in the left end cap, and the right movable shaft is inserted in the circular hole drilled in the right end cap. Has been inserted,
Near the right end of the left movable shaft, the left movable disk is fixed integrally with the left movable shaft,
Near the left end of the right movable shaft, the right movable disk is fixed integrally with the right movable shaft,
Four sets of vibration control units are stored in the housing, two sets are arranged on the left side of the shielding disk, and the other two are arranged on the right side of the shielding disk.
One of the two sets of vibration control units arranged on the left side of the shielding disc is arranged on the left side of the left movable disc, and the other set is arranged on the right side of the left movable disc.
Of the two sets of damping units arranged on the right side of the shielding disc, one set is arranged on the right side of the right movable disc, and the other set is arranged on the left side of the right movable disc.
Seismic control muscles characterized by that.
<Configuration 2>
It is a seismic control bracing that has a seismic control mechanism inside,
The vibration control mechanism is a combination of an even number of vibration control units that combine a spring that supports low loads and a spring that supports high loads.
The spring corresponding to low load is made of synthetic resin with a hole in the center and has a groove on the outer periphery to prevent deformation,
The spring corresponding to the high load is a metal coil spring,
The housing comprises a cylindrical sleeve, a first cap screwed to one end of the sleeve, and a second cap screwed to the other end of the sleeve,
A circular hole is drilled in the central portion of the first cap, and a fixed knuckle is welded outward in the central portion of the second cap.
A movable shaft is inserted through a circular hole drilled in the central portion of the first cap,
A movable disc is fixed integrally with the movable shaft in the vicinity of the tip in the casing of the movable shaft,
Two sets of vibration control units are stored in the housing, one set is arranged on one side of the movable disk, and the other set is arranged on the other side of the movable disk.
Seismic control muscles characterized by that.
<Configuration 3>
The range of loads that can be supported by a spring made of synthetic resin that supports low loads is up to 1.8 kN.
The range of loads that metal coil springs that can handle high loads can handle
3. Seismic control muscle bracing according to Configuration 1 or Configuration 2 characterized in that it is 1 kN to 5 kN.
<Configuration 4>
4. Seismic control bracing according to Configuration 1, Configuration 2 or Configuration 3, wherein a sleeve is provided with a ventilation hole.

  Generally, a seismic control mechanism is provided inside the bracing, and when a compressive force or tensile force is applied to the bracing, the internal seismic control mechanism absorbs the compressive force or tensile force to deform the building as much as possible. There are seismic bracing made for the purpose of preventing. The following patent documents 1 and 2 are listed as an example.

  The “construction isolation damper” of Patent Document 1 below is designed to absorb vibration by providing a “friction spring” between inner and outer double cylinders configured to be slidable. However, since the seismic control mechanism having such a configuration applies frictional force, the members rub against each other and wear, so it must be said that there is a problem in durability.

  Generally speaking, bracing members are inserted between pillars and beams during construction, but when the building is completed, it is buried in the wall so that it cannot be seen from the outside. It is. Therefore, if the seismic effect is weakened due to secular change, it is very difficult to replace, and in the case of a mud wall, the mud wall must be destroyed, and even if interior materials such as decorative panels are used, The interior material must be peeled off. Therefore, it should be a highly durable configuration that requires as little maintenance as possible.

  Next, the “building vibration isolator” of Patent Document 2 below is compressed in a cylindrical sleeve (casing) when a compression force is applied and a spring that is compressed when a compression force is applied. Two types of springs are housed to accommodate both compressive force and tensile force. However, there is only one spring that is compressed when the compressive force is applied, but there are two springs that are compressed when the tensile force is applied. Therefore, the compression force and the tensile force are controlled by exactly the same action. The earthquake effect is not demonstrated.

  When the same action is not applied to the compressive force and tensile force acting on the braces, for example, when the structure is weak against the compressive force and strong against the tensile force, the action differs depending on the compressive force and tensile force acting repeatedly. This tends to cause deformation of the building frame in the direction of compressive force. In the case of a configuration that is strong against compressive force and weak against tensile force, conversely, it tends to cause deformation of the building frame in the direction of the tensile force. In order to avoid such a situation, it is obvious that the structure must have the same effect on the compressive force and the tensile force.

  Also, in both Patent Documents 1 and 2 below, the compression of the internal spring is performed only when a certain force or more is applied, so when a low load that does not reach the deformation of the spring is applied. The vibration control effect will not be obtained.

  In the case of an earthquake, it is common that a strong shake comes after a very weak vibration. In addition, a weak earthquake may persist for a weak earthquake. In addition, aftershocks that occur after a strong earthquake are strong, but most are weak. In this way, the vibrations that act on the building are not limited to strong shaking, but if the weak springing does not compress the internal springs and the entire bracing has rigidity, it will be weak. On the other hand, the result is that the vibration control mechanism is not working.

In the inventions of the following Patent Documents 1 and 2, the above problems can be mentioned.

Japanese Patent Laid-Open No. 9-42346 Registered Utility Model No. 3069686

As described above, the problems to be solved by the invention are as follows.
<Problem 1>
As a mechanism, elements that lower durability such as frictional force are not used, and a structure that does not deteriorate in function even when buried in a wall surface of a building for a long period of time, that is, a maintenance-free structure.
<Problem 2>
It is set as the structure which has the completely same effect | action with respect to the compressive force and tensile force which act on bracing.
<Problem 3>
Even when a low-load vibration that does not cause the metal spring to be compressed is applied, the vibration can be absorbed.

The present invention has been made to solve the above-described problems, and provides the means for solving the problems described below.
<Solution 1>
It is a seismic control bracing that has a seismic control mechanism inside,
The vibration control mechanism is a combination of an even number of vibration control units that combine a spring that supports low loads and a spring that supports high loads.
The spring corresponding to low load is made of synthetic resin with a hole in the center and has a groove on the outer periphery to prevent deformation,
The spring corresponding to the high load is a metal coil spring,
The casing is composed of a cylindrical sleeve and a right end cap and a left end cap that are screwed to both ends of the sleeve, and a shielding disc is fixed integrally with the sleeve at the center of the sleeve,
A circular hole is drilled in the center part of the left end cap and right end cap, the left movable shaft is inserted into the circular hole drilled in the left end cap, and the right movable shaft is inserted in the circular hole drilled in the right end cap. Has been inserted,
Near the right end of the left movable shaft, the left movable disk is fixed integrally with the left movable shaft,
Near the left end of the right movable shaft, the right movable disk is fixed integrally with the right movable shaft,
Four sets of vibration control units are stored in the housing, two sets are arranged on the left side of the shielding disk, and the other two are arranged on the right side of the shielding disk.
One of the two sets of vibration control units arranged on the left side of the shielding disc is arranged on the left side of the left movable disc, and the other set is arranged on the right side of the left movable disc.
Of the two sets of damping units arranged on the right side of the shielding disc, one set is arranged on the right side of the right movable disc, and the other set is arranged on the left side of the right movable disc.
Seismic control muscles characterized by that.
<Solution 2>
It is a seismic control bracing that has a seismic control mechanism inside,
The vibration control mechanism is a combination of an even number of vibration control units that combine a spring that supports low loads and a spring that supports high loads.
The spring corresponding to low load is made of synthetic resin with a hole in the center and has a groove on the outer periphery to prevent deformation,
The spring corresponding to the high load is a metal coil spring,
The housing comprises a cylindrical sleeve, a first cap screwed to one end of the sleeve, and a second cap screwed to the other end of the sleeve,
A circular hole is drilled in the central portion of the first cap, and a fixed knuckle is welded outward in the central portion of the second cap.
A movable shaft is inserted through a circular hole drilled in the central portion of the first cap,
A movable disc is fixed integrally with the movable shaft in the vicinity of the tip in the casing of the movable shaft,
Two sets of vibration control units are stored in the housing, one set is arranged on one side of the movable disk, and the other set is arranged on the other side of the movable disk.
Seismic control muscles characterized by that.
<Solution 3>
The range of loads that can be supported by a spring made of synthetic resin that supports low loads is up to 1.8 kN.
The range of loads that metal coil springs that can handle high loads can handle
The seismic control bracing according to Solution 1 or Solution 2 characterized by being 1 kN to 5 kN.
<Solution 4>
4. Seismic control bracing according to Solution 1, Solution 2 or Solution 3, wherein the sleeve is provided with a ventilation hole.

According to the invention of Solution 1 of the present invention, the vibration control mechanism is a combination of an even number of vibration control units that combine a spring corresponding to a low load and a spring corresponding to a high load, and corresponds to a low load. The spring is made of a synthetic resin having a hole in the center and has a groove for preventing deformation on the outer periphery. Since the spring corresponding to a high load is a metal coil spring, the metal coil spring is compressed. Even when such a low load is applied, the low load can be absorbed by the compression of the synthetic resin spring. Therefore, it is possible to exert a seismic control effect even for weak shaking during an earthquake.

According to the invention of Solution 1 or Solution 2 of the present invention, half of the even-numbered vibration control units are compressed when a force that compresses the braces in the longitudinal direction is applied, and the even-number vibration control units. The remaining half of the units are compressed when a force pulling the braces in the longitudinal direction is applied, so that the absorbing action for the compressive force and the absorbing action for the tensile force are completely the same. Therefore, it becomes possible to prevent the deformation of the building equally in either direction. In the invention of Solution 3 of the present invention, the range of low load and high load that can be handled is specifically specified.

In addition, the invention of Solution 1 of the present invention specifically shows the configuration of an example of the invention . Here, it is revealed that four sets of vibration control units are housed in the housing, of which two sets correspond to compressive force and the other two correspond to tensile force. These two sets of vibration control units have completely the same effect on compressive force and tensile force, so that it is possible to prevent the deformation of the building in either direction. This is specifically shown.

The invention of Solution 2 of the present invention also clearly shows the configuration of another example of the invention . Here, it is clarified that there are two sets of vibration control units stored in the housing, of which one set corresponds to the compressive force and the other set corresponds to the tensile force. This one-by-one seismic control unit has completely the same effect on compressive force and tensile force, so that it is possible to prevent the deformation of the building in either direction. This is specifically shown.

The invention of the solving means 2 shows an example of the configuration used when the space between the columns of the building is narrow and the invention of the solving means 1 cannot be applied. That is, since the number of vibration control units is half that of the invention of the solving means 1 , the length of the entire bracing is also almost half, the space between the columns is narrow, and the invention of the solving means 1 is not applicable. It can be done.

According to the invention of the solution means 4 of the present invention, since the ventilation hole is formed in the sleeve, it is possible to prevent the temperature in the sleeve from rising even in summer. Synthetic resin springs that support low loads may soften due to temperature rise and may not retain their characteristics, but the sleeve has a vent hole that prevents temperature rise in the sleeve. The characteristics of the spring made of synthetic resin can be maintained.

Further, according to the invention of Solution 4 of the present invention, since the ventilation hole is formed in the sleeve, the outside air smoothly flows from the ventilation hole even when the vibration control unit is compressed. The change in atmospheric pressure in the housing can be prevented, and this plays a role in promoting smooth compression of the vibration control unit. When the vibration control unit is restored, the air in the sleeve is exhausted from the ventilation hole, which facilitates smooth restoration of the vibration control unit.

(A) It is a front view of the seismic control bracing of Example 1 of this invention. (B) It is a top view of the seismic control bracing of Example 1 of this invention. (C) It is the sectional view on the AA line of FIG. 1b. (A) It is an enlarged view of the left side principal part of FIG. 1c. (B) It is an enlarged view of the right part of FIG. 1c. It is explanatory drawing explaining the assembly method of the seismic control bracing of Example 1 of this invention. (A) It is an external appearance perspective view of the sleeve joint of the seismic control bracing of Example 1 of this invention. (B) It is an external appearance perspective view which shows the state which cut through the sleeve joint of the seismic control bracing of Example 1 of this invention longitudinally. (A) It is an external appearance perspective view of the left sleeve of the seismic control bracing of Example 1 of this invention. (B) It is an external appearance perspective view of the right sleeve of the seismic control bracing of Example 1 of this invention. (A) It is an external appearance perspective view of the metal coil spring of the seismic control bracing of Example 1 of this invention. (B) It is a front view of the metal coil spring of the seismic control bracing of Example 1 of this invention. (C) It is an external appearance perspective view of the synthetic resin spring of the seismic control bracing of Example 1 of this invention. (D) It is an external appearance perspective view which shows the state which cut through the synthetic resin spring of the seismic control bracing of Example 1 of this invention longitudinally. (A) It is an external appearance perspective view of the left movable shaft of the seismic control bracing of Example 1 of this invention. (B) It is an external appearance perspective view of the right movable shaft of the seismic control bracing of Example 1 of this invention. (A) It is an external appearance perspective view of the left end cap of the seismic control bracing of Example 1 of this invention. (B) It is an external appearance perspective view of the right end cap of the seismic control bracing of Example 1 of this invention. (C) It is an external appearance perspective view of the knuckle and nut of the left side of the seismic control bracing of Example 1 of this invention. (D) It is an external appearance perspective view of the knuckle and nut of the right side of the seismic control bracing of Example 1 of this invention. (A) It is a front view of the seismic control bracing of Example 2 of this invention. (B) It is a top view of the seismic control bracing of Example 2 of this invention. (C) It is BB sectional drawing of FIG. 9b. It is the enlarged view which abbreviate | omitted a part of FIG. 9c. It is explanatory drawing explaining the assembling method of the seismic control bracing of Example 2 of this invention. It is an external appearance perspective view of the 2nd cap of seismic control bracing of Example 2 of this invention. (A) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 1 of this invention. (B) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 1 of this invention. (C) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 1 of this invention. (A) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 1 of this invention. (B) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 1 of this invention. (C) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 1 of this invention. (A) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 2 of this invention. (B) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 2 of this invention. (C) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 2 of this invention. (D) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 2 of this invention. (E) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 2 of this invention. (A) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 1 of this invention. (B) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 1 of this invention. (C) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 2 of this invention. (A) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 1 of this invention. (B) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 1 of this invention. (A) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 2 of this invention. (B) It is explanatory drawing for demonstrating the effect | action of the seismic control bracing of Example 2 of this invention. It is a copy of the test result book of the pressure resistance test of the spring made from urethane which can be used for Example 1 and Example 2 of the present invention. It is a copy of the test result document of the pressure resistance test of the steel coil spring which can be used for Example 1 and Example 2 of this invention.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

<Configuration of Example 1>
As shown in FIG. 1, the seismic control bracing A of the first embodiment of the present invention includes a substantially cylindrical housing 1, a left movable shaft 21 inserted through the housing 1, a right movable shaft 22, and the interior of the housing 1. The first vibration control unit 31, the second vibration control unit 32, the third vibration control unit 33, and the fourth vibration control unit 34 stored in

The housing 1 includes a sleeve 11, a left end cap 12 that is screwed to the left end of the sleeve 11, and a right end cap 13 that is screwed to the right end of the sleeve 11. The sleeve 11 further includes a cylindrical left sleeve 111, a cylindrical right sleeve 112, and a sleeve joint 113 connecting the left sleeve 111 and the right sleeve 112 at the center. The left sleeve 111, the right sleeve 112, and the sleeve joint 113 are all made of metal.

As shown in FIG. 4, the sleeve joint 113 includes a cylindrical main body 113a and a metal shielding disk 114 fixed to the center of the main body 113a by welding. A thread groove is cut on the inner wall of the sleeve joint 113. FIG. 5 shows a left sleeve 111 and a right sleeve 112. Both have a cylindrical shape and are threaded on the outer periphery of each end. Each of the bottom portions has two holes h. A total of four holes h are drilled immediately below the urethane springs 31U, 32U, 33U, 34U, as is apparent from FIG.

As shown in FIG. 8a, the left end cap 12 screwed to the left end of the left sleeve 111 has a circular hole 12a in the center of the left side, and a thread groove is cut on the inner peripheral surface. . Further, as shown in FIG. 8b, the right end cap 13 screwed to the right end of the right sleeve 112 has a circular hole 13a in the center of the right side surface, and a thread groove is cut on the inner peripheral surface. ing.

As shown in FIG. 7a, the left movable shaft 21 is made of a metal with a main body 21a having a round bar shape, a thread is cut on the outer peripheral surface of the left end, and a metal disc is provided in the vicinity of the tapered right end. The left movable disk 21b is fixed. Further, as shown in FIG. 7b, the right movable shaft 22 has a main body 22a made of a metal having a round bar shape, a thread cut on the outer peripheral surface of the right end, and a metal made near the tapered left end. A disc-shaped right movable disc 22b is fixed.

As shown in FIG. 2a, the first vibration control unit 31 includes a steel coil spring 31C disposed on the left side and a urethane spring 31U made of urethane resin disposed on the right side. Between the coil spring 31C and the urethane spring 31U, a metal disk-shaped partition plate D1 having a circular hole D1a at the center is disposed.

As shown in FIG. 2a, the second vibration control unit 32 includes a steel coil spring 32C disposed on the right side and a urethane spring 32U made of urethane resin disposed on the left side. Between the coil spring 32C and the urethane spring 32U, a metal disk-shaped partition plate D2 having a circular hole D2a at the center is disposed.

As shown in FIG. 2b, the third vibration control unit 33 includes a steel coil spring 33C disposed on the left side and a urethane spring 33U made of urethane resin disposed on the right side. Between the coil spring 33C and the urethane spring 33U, a metal disk-shaped partition plate D3 having a circular hole D3a at the center is disposed.

As shown in FIG. 2B, the fourth vibration control unit 34 includes a steel coil spring 34C disposed on the right side and a urethane spring 34U made of urethane resin disposed on the left side. Between the coil spring 34C and the urethane spring 34U, a metal disk-shaped partition plate D4 having a circular hole D4a at the center is disposed.

6a and 6b show the configuration of a steel coil spring 31C. In the first embodiment, the coil spring 31C has a diameter Cφ of 40 mm, a length CL of 50 mm, a displacement of 10 mm, that is, when a load is applied and the length CL becomes 40 mm, the load is 1.90 kN, and the displacement is 15 mm. A load having a load of 3.92 kN when the load is applied and the length CL becomes 35 mm is used.

FIG. 20 shows a test result table of the pressure resistance test of the coil spring 31C. This pressure test was conducted by the Tokai Technical Center on March 8, 2010 at the request of the applicant. In the table of test results, “height” is the length CL in FIGS. 6a and 6b. The coil springs 32C, 33C, and 34C have the same specifications as the coil spring 31C.

6c and 6d show a configuration of a urethane spring 31U made of urethane resin. In Example 1, the urethane spring 31U has a diameter Uφ of 35 mm, a length UL of 30 mm, a displacement of 10 mm, that is, a load when the length UL is 20 mm by applying a load, a load of 0.62 kN, a displacement of 15 mm, That is, a load having a load of 1.12 kN when the load is applied and the length CL becomes 15 mm is used.

As shown in FIG. 6c, the urethane spring 31U has four grooves Ut, Ut, Ut, Ut on the outer peripheral surface. The grooves Ut, Ut, Ut, Ut all have the same width dt (see FIG. 6d). In addition, about the peak part divided | segmented and formed in groove | channel Ut, Ut, Ut, and Ut, the peak part Ua and Ue of both ends are width du1, middle peak part Ub, Uc, and Ud are width du2, and du1> du2 (See FIG. 6d). A circular hole 31H is formed in the center.

The reason why du1> du2 is as follows. That is, the peaks Ua and Ue of the width du1 are located at both ends of the urethane spring 31U, but these portions are portions that contact the adjacent left movable disk 21b or the partition plate D1 and receive pressure directly. If it is thin, there is a fear of causing deformation, so it is made thicker than the other peaks Ub, Uc, Ud.

FIG. 19 shows a test result table of the pressure resistance test of the urethane spring 31U. This pressure test was conducted by the Tokai Technical Center on March 8, 2010 at the request of the applicant. In the table of test results, “height” is the length UL in FIG. 6c. The urethane springs 32U, 33U, and 34U have exactly the same specifications as the urethane spring 31U.

In addition, as a raw material, it can also consider using rubber | gum and silicon | silicone instead of urethane. However, since the temperature of the rubber is softened from about 80 ° C., it is considered that urethane or silicone is more appropriate in view of the temperature rise in summer. By the way, the softening temperature of urethane is about 120 ° C and the softening temperature of silicon is about 200 ° C, so silicon is more suitable as a material, but it is realistic to select urethane from a price perspective. It will be. Since the sleeves 111 and 112 have two holes h as described above, the temperature rise in the sleeves 111 and 112 is suppressed by this.

As shown in FIG. 1, a knuckle N1 having a circular hole N1a and a nut N2 are screwed to the left end of the left movable shaft 21. A knuckle N3 having a circular hole N3a and a nut N4 are screwed to the right end of the right movable shaft 22.

FIG. 3 shows an assembled configuration of the seismic control bracing A of the first embodiment. In assembling the seismic control bracing A of the first embodiment, first, the right end of the left sleeve 111 is screwed to the left side of the sleeve joint 113.

Next, the second vibration control unit 32 including the urethane spring 32U, the partition plate D2, and the coil spring 32C is stored in the left sleeve 111. The right end of the coil spring 32C is brought into contact with the left side surface of the shield disc 114 of the sleeve joint 113 as seen in FIG. 2a.

Next, the left movable shaft 21 is stored in the left sleeve 111. The right side surface of the left movable disc 21b fixed in the vicinity of the right end of the left movable shaft 21 is in contact with the left side surface of the urethane spring 32U, and the portion on the right side of the left movable disc 21b of the main body 21a of the left movable shaft 21 is urethane. The spring 32U is inserted into more than half of the central circular hole 32H.

Next, the first vibration control unit 31 is inserted from the left end of the left movable shaft 21. As shown in FIG. 2a, the right side surface of the urethane spring 31U of the first vibration control unit 31 is in contact with the left side surface of the left movable disc 21b of the left movable shaft 21, and the left movable shaft 21 is connected to the central portion of the coil spring 31C and urethane. The spring 31U is inserted through the central circular hole 31H.

Next, the circular hole 12 a of the left end cap 12 is inserted into the left end of the left movable shaft 21, and the left end cap 12 is screwed to the left end of the left sleeve 111. As a result, the left end of the left movable shaft 21 protrudes from the circular hole 12 a of the left end cap 12, and the nut N <b> 2 and the knuckle N <b> 1 are screwed to the left end of the left movable shaft 21. This completes the assembly of the left half of the seismic control A in Example 1.

Next, the left end of the right sleeve 112 is screwed to the right side of the sleeve joint 113. Further, the third vibration control unit 33 including the urethane spring 33U, the partition plate D3, and the coil spring 33C is stored in the right sleeve 112. The left end of the coil spring 33C is brought into contact with the right side surface of the shielding disk 114 of the sleeve joint 113 as seen in FIG. 2b.

Next, the right movable shaft 22 is stored in the right sleeve 112. The left side surface of the right movable disc 22b fixed in the vicinity of the left end of the right movable shaft 22 abuts on the right side surface of the urethane spring 33U, and the left portion of the right movable disc 22b of the main body 22a of the right movable shaft 22 is urethane. The spring 33U is inserted into more than half of the central circular hole 33H.

Next, the fourth vibration control unit 34 is inserted from the right end of the right movable shaft 22. As shown in FIG. 2b, the left side surface of the urethane spring 34U of the fourth vibration control unit 34 is in contact with the right side surface of the right movable disk 22b of the right movable shaft 22, and the right movable shaft 22 is connected to the central portion of the coil spring 34C and urethane. The spring 34U is inserted through the central circular hole 34H.

Next, the circular hole 13 a of the right end cap 13 is inserted into the right end of the right movable shaft 22, and the right end cap 13 is screwed to the right end of the right sleeve 112. As a result, the right end portion of the right movable shaft 22 protrudes from the circular hole 13 a of the right end cap 13, and the nut N4 and the knuckle N3 are screwed to the right end of the right movable shaft 22. This completes the assembly of seismic control bracing A of Example 1.

In the seismic control bracing A of the first embodiment, the first seismic control unit 31 and the second seismic control unit 32 are arranged on the left side with the shielding disc 114 fixed to the center of the sleeve joint 113 interposed therebetween. It turns out that it is the left-right symmetric structure by which the 3rd damping unit 33 and the 4th damping unit 34 were arranged.

<Operation of Example 1>
The seismic control bracing A of Example 1 is attached to a building as shown in FIG. 16a as an example. That is, in FIG. 16a, the knuckle N1 of the seismic control bracing A is mounted on the column PL via the mounting bracket T, and the knuckle N3 of the seismic control bracing A is mounted on the beam BM via the mounting bracket T. FIG. 16b shows an enlarged view of the state in which the knuckle N3 is mounted on the beam BM via the mounting bracket T.

  The knuckle N3 of the vibration control bracing A is pivotally attached to the mounting bracket T by inserting the mounting pin P through the circular hole N3a of the knuckle N3. The knuckle N1 is also pivotally attached to the mounting bracket T by inserting the mounting pin P through the circular hole N1a. The mounting bracket T pivotally attached to the knuckle N1 is fixed to the column PL, and the mounting bracket T pivotally attached to the knuckle N3 is fixed to the beam BM.

  FIG. 17a shows a state in which the angle α formed between the column PL and the beam BM exceeds 90 ° due to a vibration such as an earthquake. At this time, a force to stretch the whole, that is, tensile forces X1 (X3) and X2 (X4) are applied to the seismic control bracing A. The internal action of the seismic control A at this time is shown in FIGS. 13b and 13c. FIG. 13a shows a normal state in which neither a tensile force nor a compressive force is applied.

  When the tensile force is a low load tensile force X1, X2, the seismic control bracing A reacts as shown in FIG. 13b. That is, the left movable shaft 21 is pulled leftward by the tensile force X1, and the left movable disc 21b fixed to the main body 21a of the left movable shaft 21 is also slid leftward in the left sleeve 111. .

  Then, the first vibration control unit 31 disposed on the left side of the left movable disk 21b is compressed leftward by the left movable disk 21b. However, since the tensile force X1 is low, the coil spring 31C does not react and the urethane spring 31U is first compressed. FIG. 13b shows this state.

  As described above, in the seismic isolation A of Example 1, the urethane spring 31U has a diameter Uφ of 35 mm, a length UL of 30 mm (see FIG. 6c), a displacement of 10 mm, that is, a length UL applied with a load. A load having a load of 0.62 kN and a displacement of 15 mm, that is, a load of 1.12 kN when the length CL is 15 mm when the load is applied is used.

  Therefore, if the tensile force X1 is slightly higher than 1 kN, the urethane spring 31U can absorb and restore the force. As shown in FIGS. 6c and 6d, the urethane spring 31U is provided with grooves Ut, Ut,... On the outer peripheral surface, so that the grooves Ut, Ut,. The widths dt, dt,... For this reason, it does not happen that the center of the urethane spring 31U expands and breaks. Even when the widths dt, dt,... Of the grooves Ut, Ut,... Are reduced to 0, the urethane material itself is further compressed, so the widths dt, dt of the grooves Ut, Ut,. Even if... Becomes 0, the compression further proceeds.

  In the test result table shown in FIG. 1 (Remarks column A73) is the urethane spring 31U used in Example 1, but it is found that a displacement of 10 mm at a load of 0.62 kN and a displacement of 15 mm at a load of 1.12 kN (reduction in length UL) occurs. . When the length UL is reduced by 15 mm, this means that the length UL is halved. Therefore, although this depends on the setting of the widths dt, dt,... Of the grooves Ut, Ut,. It is considered that the limit of displacement is 31U.

  FIG. 13c shows a state where a larger load is applied. When the large tensile forces X3 and X4 are applied, the first vibration control unit 31 is compressed exceeding the limit of displacement of the urethane spring 31U. In this case, the coil spring 31C is compressed. There is no inconvenience. As described above, the coil spring 31C has a diameter Cφ of 40 mm, a length CL of 50 mm (see FIG. 6a), a displacement of 10 mm, that is, a length CL of 40 mm when a load is applied, in the damping control A of the first embodiment. The load is 1.90 kN, the displacement is 15 mm, that is, the load is 3.92 kN when the length CL becomes 35 mm when the load is applied.

  In the test result table shown in FIG. 1 (Remarks column heavy load) is the coil spring 31C used in Example 1, but it is found that a displacement of 10 mm at a load of 1.90 kN and a displacement of 15 mm at a load of 3.92 kN (reduction in length CL) occurs. . Since the coil spring 31C actually starts to be compressed from a load of about 1 kN, the coil spring 31C is deformed slightly before the compression limit of the urethane spring 31U to absorb the tensile force X3. Therefore, the urethane spring 31U and the coil spring 31C smoothly exchange their roles and work together.

  In the test result table shown in FIG. 20, the load is 3.92 kN and there is no record ahead of the displacement of 15 mm, but actually there is a little deformation region of the coil spring 31C, so even for a load exceeding 4 kN. Correspondence is possible.

  As described above, in the first seismic control unit 31 of the seismic control bracing A of the first embodiment, the urethane spring 31U works to absorb the vibration and exhibit a restoring force at a low load (tensile force X1). However, at a high load (tensile force X3), the coil spring 31C works to absorb vibrations and exhibit a restoring force, and the action area of the urethane spring 31U and the action area of the coil spring 31C are slightly overlapped. Cooperation is performed extremely smoothly, and the vibration control action is surely exhibited even at a low load (tensile force X1) or a high load (tensile force X3).

  Since the volume of the urethane spring 31U is slightly reduced when it is compressed, the air pressure in the sleeve 111 is reduced accordingly, but the sleeve 111 has holes h and h, so the air pressure is reduced. The outside air flows through the holes h and h. Therefore, the first seismic control unit 31 can smoothly operate without being affected by the decrease in the atmospheric pressure. When the urethane spring 31U is restored, air in the sleeve is discharged from the holes h and h, so that the first vibration control unit 31 operates smoothly without being affected by changes in the atmospheric pressure. be able to.

  The above is a description of the operation related to the first damping unit 31. At the right end of the damping control A, the fourth damping unit 34 that is configured symmetrically with the first damping unit 31 is the first damping unit 31. Simultaneously with the seismic unit 31, the same action as the first seismic control unit 31 is performed. That is, the urethane spring 34U is compressed when the load is low (tensile force X2), and the coil spring 34C is compressed when the load is high (tensile force X4).

Since the urethane spring 34U and the coil spring 34C have the same specifications, the urethane spring 31U and the coil spring 34C have the same specifications, the same action is performed symmetrically at the left end and the right end of the vibration control bracing A. Therefore, the entire seismic control bracing A can perform the seismic control action in a very balanced manner.

At this time, since no force acts on the second vibration control unit 32 and the third vibration control unit 33, both are not deformed. That is, the urethane spring 32U, the coil spring 32C, the coil spring 33C, and the urethane spring 33U are not deformed at all.

In FIG. 13c, a state close to the deformation limit of the first vibration control unit 31 and the fourth vibration control unit 34 is depicted, but what is noted here is the right end portion of the main body 21a of the left movable shaft 21. Is in a state of being slightly inserted into the circular hole 32H of the urethane spring 32U of the second vibration control unit 32.

In other words, the length of the main body 21a of the left movable shaft 21 is the same as that of the main body 21a even when the first vibration control unit 31 is compressed to the deformation limit due to a high load acting on the vibration control bracing A. That is, the right end is set as long as it remains inside the circular hole 32H of the urethane spring 32U of the second vibration control unit 32. By doing so, the first vibration control unit 31 is restored. In addition, the right end of the main body 21a of the left movable shaft 21 can move rightward in the circular hole 32H of the urethane spring 32U of the second vibration control unit 32 without any obstacle.

The same applies to the setting of the length of the main body 22a of the right movable shaft 22, and the length of the main body 22a of the right movable shaft 22 is the fourth because a high load is applied to the seismic control bracing A. Even when the vibration control unit 34 is compressed to the deformation limit, the left end of the main body 22a is set to a length that remains inside the circular hole 33H of the urethane spring 33U of the third vibration control unit 33.

Next, the operation of the seismic control bracing A when a compressive force opposite to that described above is applied to the seismic control bracing A of the first embodiment will be described. FIG. 17b shows a state in which the angle α formed between the column PL and the beam BM is smaller than 90 ° due to a vibration such as an earthquake. At this time, a force to compress the whole, that is, compressive forces Y1 (Y3) and Y2 (Y4) are applied to the seismic control bracing A. 14B and 14C show the internal action of the seismic control bracing A at this time. FIG. 14a shows a normal state where neither tensile force nor compressive force is applied.

  When the compression force is a low load compression force Y1, Y2, the seismic control bracing A reacts as shown in FIG. 14b. That is, the left movable shaft 21 is pushed rightward by the compression force Y1, and the left movable disk 21b fixed to the main body 21a of the left movable shaft 21 is also slid rightward in the left sleeve 111. It is done.

  Then, the second vibration control unit 32 disposed on the right side of the left movable disk 21b is compressed rightward by the left movable disk 21b. However, since the compression force Y1 is a low load, the coil spring 32C does not react, and the urethane spring 32U is first compressed. FIG. 14b shows this state.

  In the seismic control bracing A of Example 1, the urethane spring 32U has the same specifications as the urethane spring 31U, and the displacement is 10 mm, that is, the load when the length UL becomes 20 mm when the load is applied is 0.62 kN. A displacement of 15 mm, that is, a load of 1.12 kN when the load is applied and the length CL becomes 15 mm is used. Therefore, if the compression force Y1 is slightly over 1 kN, this urethane spring 32U can absorb and restore the force.

  FIG. 14c shows a state where a larger load is applied. When the large compressive forces Y3 and Y4 are applied, the second vibration control unit 32 is compressed beyond the limit of displacement of the urethane spring 32U. In this case, the coil spring 32C is compressed. There is no inconvenience. The coil spring 32C has the same specifications as the coil spring 31C. The displacement is 10 mm, that is, the load when the length CL becomes 40 mm is 1.90 kN, the displacement is 15 mm, that is, the load is the length CL is 35 mm. The load at the time of becoming 3.92 kN (refer to the test result table of FIG. 20).

Since the coil spring 32C actually starts to be compressed from a load of about 1 kN, the coil spring 32C is deformed slightly before the compression limit of the urethane spring 32U to absorb the compression force Y3. Therefore, the urethane spring 32U and the coil spring 32C smoothly exchange their roles and work together. In the test result table shown in FIG. 20, the load is 3.92 kN and there is no record ahead of the displacement of 15 mm, but actually there is a little deformation region of the coil spring 31C, so even for a load exceeding 4 kN. Correspondence is possible.

  As described above, in the second vibration control unit 32 of the vibration control bracing A of the first embodiment, the urethane spring 32U works to absorb the vibration and exhibit a restoring force at a low load (compression force Y1). However, at high load (compression force Y3), the coil spring 32C works to absorb vibrations and exhibit a restoring force, and the action area of the urethane spring 32U and the action area of the coil spring 32C are slightly overlapped. Cooperation is performed extremely smoothly, and the vibration control action is surely exhibited even at a low load (compression force Y1) or a high load (compression force Y3).

  The above is a description of the operation related to the second vibration control unit 32. At the right end of the vibration control bracing A, the third vibration control unit 33 configured symmetrically with the second vibration control unit 32 is the second vibration control unit 32. Simultaneously with the seismic unit 32, the same action as the second seismic control unit 32 is performed. That is, the urethane spring 33U is compressed when the load is low (compression force Y2), and the coil spring 33C is compressed when the load is high (compression force Y4).

Since the urethane spring 33U has the same specifications as the urethane spring 32U and the coil spring 33C and the coil spring 32C, the same action is symmetrically performed at the left end and the right end of the vibration control bracing A. Therefore, the entire seismic control bracing A can perform the seismic control action in a very balanced manner.

At this time, since no force acts on the first vibration control unit 31 and the fourth vibration control unit 34, both are not deformed. That is, the urethane spring 31U, the coil spring 31C, the coil spring 34C, and the urethane spring 34U are not deformed at all. The action of the holes h and h drilled in the bottom of the right sleeve 112 is the same as the action of the holes h and h drilled in the bottom of the left sleeve 111.

As described above, even when a tensile force is applied to the seismic control bracing A of Example 1 (FIG. 17a) or a compression force is applied (FIG. 17b), the seismic control bracing A responds completely and evenly. Thus, it is understood that the tensile force or the compressive force is absorbed. That is, two seismic control units, the first seismic control unit 31 and the fourth seismic control unit 34, act on the tensile force, and the second seismic control unit 32 and the third seismic control unit 33 respond to the compression force. Two sets of vibration control units work.

The first seismic control unit 31, the second seismic control unit 32, the third seismic control unit 33, and the fourth seismic control unit 34 are completely equal in their action. However, it can be said that it shows exactly the same response to the tensile force and has the same restoring ability.

<Configuration of Example 2>
As shown in FIG. 9, the vibration control bracing B of the second embodiment of the present invention is a substantially cylindrical housing 4, a movable shaft 5 inserted through the housing 4, and a first housing stored in the housing 4. It consists of a first vibration control unit 61 and a second vibration control unit 62.

The housing 4 includes a metal sleeve 41, a metal left end cap 42 that is screwed to the left end of the sleeve 41, and a metal right end cap 43 that is screwed to the right end of the sleeve 41.

As shown in FIG. 11, the left end cap 42 screwed to the left end of the sleeve 41 has a circular hole 42a in the center of the left side surface, and a thread groove is cut on the inner peripheral surface. Further, as shown in FIGS. 11 and 12, the right end cap 43 screwed to the right end of the sleeve 41 has a knuckle N7 having a circular hole N7a at the center of the right side surface thereof protruding and fixed in the right direction by welding. .

As shown in FIG. 11, the movable shaft 5 has a body 51 with a round bar shape and is made of metal, a thread is cut on the outer peripheral surface of the left end, and a metal disc-shaped movable circle is formed near the right end having a taper. The plate 52 is fixed.

As shown in FIG. 10, the first vibration control unit 61 includes a steel coil spring 61C arranged on the left side and a urethane spring 61U made of urethane resin arranged on the right side. Between the coil spring 61C and the urethane spring 61U, a metal disk-shaped partition plate D5 having a circular hole D5a at the center is arranged.

As shown in FIG. 10, the second vibration control unit 62 includes a steel coil spring 62 </ b> C disposed on the right side and a urethane spring 62 </ b> U made of urethane resin disposed on the left side. Between the coil spring 62C and the urethane spring 62U, a metal disk-shaped partition plate D6 having a circular hole D6a in the center is disposed.

The urethane spring 61U and the urethane spring 62U have the same specifications as the urethane spring 31U in the first embodiment. That is, in Example 1, the urethane spring 61U and the urethane spring 62U have a displacement of 10 mm, that is, a load when the length (height) is shortened by 10 mm by applying a load of 0.62 kN, a displacement of 15 mm, that is, a load. The load (1.12 kN) when the length (height) is shortened by 15 mm is used (see the test result table in FIG. 19).

Further, the coil spring 61C and the coil spring 62C have exactly the same specifications as the coil spring 31C in the first embodiment. That is, in Example 2, the coil spring 61C and the coil spring 62C have a displacement of 10 mm, that is, a load when the length (height) is shortened by 10 mm by applying a load of 1.90 kN, a displacement of 15 mm, that is, by applying a load. A load whose length (height) is reduced by 15 mm is 3.92 kN (see the test result table in FIG. 20).

As shown in FIG. 9, a knuckle N5 having a circular hole N5a and a nut N6 are screwed to the left end of the movable shaft 5. Further, as described above, the knuckle N7 having the circular hole N7a is fixed to the right side surface of the right end cap 43 by welding.

FIG. 11 shows an assembled configuration of the seismic bracing B of the second embodiment. In assembling the vibration control bracing B of the second embodiment, the movable shaft 5 is first stored in the sleeve 41 from the left side of the sleeve 41. Next, the first vibration control unit 61 is inserted from the left end of the movable shaft 5, and the circular hole 42 a of the left end cap 42 is further inserted to screw the left end cap 42 to the left end of the sleeve 41. Then, a nut N6 and a knuckle N5 are screwed to the left end of the main body 51 of the movable shaft 5 protruding from the circular hole 42a of the left end cap 42. This completes the assembly of the left half of the seismic control bracing B.

Next, the second vibration control unit 62 is stored in the sleeve 41 from the right side of the sleeve 41. At this time, the right end of the main body 51 of the movable shaft 5 is inserted halfway through the center circular hole 62H of the urethane spring 62U of the second vibration control unit 62. Then, the right end cap 43 is screwed to the right end of the sleeve 41. This completes the assembly of seismic control bracing B.

In the seismic control bracing B of the second embodiment, the first seismic control unit 61 is on the left side and the second seismic control unit 62 is on the right side with the movable disc 52 fixed in the vicinity of the right end of the main body 51 of the movable shaft 5 interposed therebetween. It can be seen that the inside of the housing 4 has a symmetrical configuration (see FIG. 10).

<Operation of Example 2>
The seismic control bracing B of Example 2 is attached to a building as shown in FIG. 16c as an example. That is, in FIG. 16c, the knuckle N5 of the seismic control bracing B is rotatably attached to the column PL1 via the mounting bracket T, and the knuckle N7 of the seismic control bracing B is rotated to the beam BM via the mounting bracket T. It is mounted freely. Since the seismic bracing B is nearly half as long as the seismic bracing of Example 1, it can also be used where the pillars PL1 and PL2 are close to each other as shown in FIG. 16c. .

  FIG. 18a shows a state where the angle β formed between the column PL1 and the beam BM exceeds 90 ° due to a vibration such as an earthquake. At this time, a force to stretch the whole, that is, tensile forces X5 (X7) and X6 (X8) act on the seismic control bracing B. The internal action of the seismic control bracing B at this time is shown in FIGS. 15b and 15c. FIG. 15a shows a normal state in which neither a tensile force nor a compressive force is applied.

  When the tensile force is the low load tensile force X5, X6, the seismic bracing B reacts as shown in FIG. 15b. That is, the movable shaft 5 is pulled leftward by the tensile force X5, and the movable disk 52 fixed to the main body 51 of the movable shaft 5 is also slid leftward.

  Then, the first vibration control unit 61 disposed on the left side of the movable disk 52 is compressed leftward by the movable disk 52. However, since the tensile force X5 is a low load, the coil spring 61C does not react, and the urethane spring 61U is first compressed. FIG. 15b shows this state.

  As described above, in the vibration control bracing B of the second embodiment, the urethane spring 61U has the same specifications as the urethane spring 31U of the vibration control bracing A of the first embodiment and has a displacement of 10 mm, that is, a length with a load applied ( The load is 0.62 kN when the height is 20 mm and the displacement is 15 mm, that is, the load when the length (height) is 15 mm when the load is applied is 1.12 kN. Accordingly, if the tensile force X5 is slightly higher than 1 kN, the urethane spring 61U can absorb and restore the force.

  In the test result table shown in FIG. 1 (remarks column A73) is the urethane spring 61U used in Example 2, and it can be seen that a displacement (length reduction) of 10 mm occurs at a load of 0.62 kN and 15 mm at a load of 1.12 kN. If the length is reduced by 15 mm, this means that the length is halved, so this is considered to be the limit of displacement of the urethane spring 61U.

  FIG. 15c shows a state where a larger load is applied. When the large tensile forces X7 and X8 are applied, the first vibration control unit 61 is compressed exceeding the limit of displacement of the urethane spring 61U. In this case, the coil spring 61C is compressed. There is no inconvenience. As described above, the coil spring 61C has the same specifications as the coil spring 31 of the vibration control brace A of Example 1 in the vibration control brace B of Example 2, and has a displacement of 10 mm, that is, a length (high) The load is 1.90 kN and the displacement is 15 mm, that is, the load is 3.92 kN when the length (height) is 35 mm when the load is applied.

  In the test result table shown in FIG. 1 (remarks column heavy load) is the coil spring 61C used in the first embodiment, and it can be seen that a displacement (length reduction) of 10 mm occurs at a load of 1.90 kN and 15 mm at a load of 3.92 kN. Since the coil spring 61C actually starts to be compressed when the load is about 1 kN, the coil spring 61C is deformed slightly before the compression limit of the urethane spring 61U to absorb the tensile force X7. Therefore, the urethane spring 61U and the coil spring 61C smoothly exchange their roles and work together.

  In the test result table shown in FIG. 20, the load is 3.92 kN and there is no record ahead of the displacement of 15 mm. However, since there is actually a little deformation area of the coil spring 61C, 4 kN is the same as in the first embodiment. It is possible to cope with loads that exceed.

  As described above, in the first vibration control unit 61 of the vibration control bracing B of the second embodiment, the urethane spring 61U works to absorb the vibration and exhibit a restoring force at a low load (tensile force X5). However, at high load (tensile force X7), the coil spring 61C works to absorb vibrations and exert a restoring force, and the action area of the urethane spring 61U and the action area of the coil spring 61C are slightly overlapped. Cooperation is performed extremely smoothly, and the vibration control action is surely exhibited even at a low load (tensile force X5) or a high load (tensile force X7).

  The above is the description of the operation related to the first vibration control unit 61. At the other end of the vibration control bracing B, the second vibration control unit 62 configured symmetrically with the first vibration control unit 61 is Simultaneously with the vibration control unit 61, the same action as the first vibration control unit 61 is performed. That is, the urethane spring 62U is compressed when the load is low (tensile force X6), and the coil spring 62C is compressed when the load is high (tensile force X8).

Since the urethane spring 62U and the coil spring 62C have the same specifications as the urethane spring 61U and the coil spring 61C, the same action is performed symmetrically at the left end and the right end of the vibration control bracing B. Therefore, the entire seismic control bracing B can perform the seismic control action in a very balanced manner.

In FIG. 15 c, a state close to the deformation limit of the first vibration control unit 61 is depicted, but it should be noted here that the right end portion of the main body 51 of the movable shaft 5 is the second vibration control unit 62. That is, the urethane spring 62U is slightly inserted into the circular hole 62H.

That is, conversely, the length of the main body 51 of the movable shaft 5 is equal to the right end of the main body 51 even when a high load is applied to the seismic control bracing B and the first vibration control unit 61 is compressed to the deformation limit. Is set to a length that remains inside the circular hole 62H of the urethane spring 62U of the second vibration control unit 62, and in this way, when the first vibration control unit 61 is restored, The right end of the main body 51 of the movable shaft 5 can move rightward in the circular hole 62H of the urethane spring 62U of the second vibration control unit 62 without any obstacle.

Next, the action of the seismic control bracing B when a compressive force opposite to that described above is applied to the seismic control bracing B of the second embodiment will be described. FIG. 18 b shows a state in which the angle β formed between the column PL1 and the beam BM is smaller than 90 ° due to a vibration such as an earthquake. At this time, a force to compress the whole, that is, compressive forces Y5 (Y7) and Y6 (Y8) are applied to the seismic control bracing A. The internal action of the seismic control bracing B at this time is shown in FIGS. 15d and 15e. FIG. 15a shows a normal state in which neither a tensile force nor a compressive force acts as described above.

  When the compression force is a low load compression force Y5, Y6, the seismic control bracing B reacts as shown in FIG. 15d. That is, the movable shaft 5 is pushed rightward by the compression force Y5, and the movable disk 52 is also slid rightward.

  Then, the second vibration control unit 62 disposed on the right side of the movable disk 52 is compressed rightward by the movable disk 52. However, since the compression force Y5 is a low load, the coil spring 62C does not react, and the urethane spring 62U is first compressed. FIG. 15d shows this state.

  In the seismic control bracing B of Example 2, the urethane spring 62U has the same specifications as the urethane spring 61U, and the displacement when the length (height) becomes 20 mm by applying a load of 10 mm, that is, the load is 20 mm. A load having a load of 1.12 kN when the length (height) becomes 15 mm by applying a load of 0.62 kN and a displacement of 15 mm is used. Therefore, if the compression force Y5 is slightly over 1 kN, this urethane spring 62U can absorb and restore the force.

  FIG. 15e shows a state in which a larger load is applied. When the large compressive forces Y7 and Y8 are applied, the second vibration control unit 62 is compressed exceeding the limit of displacement of the urethane spring 62U. In this case, the coil spring 62C is compressed. There is no inconvenience. The coil spring 62C has the same specifications as the coil spring 61C. The displacement is 10 mm, that is, when the load is 40 mm in length (height), the load is 1.90 kN, the displacement is 15 mm, that is, the length is applied. The load when the (height) is 35 mm is 3.92 kN (see the test result table in FIG. 20).

Since the coil spring 62C actually starts to be compressed from a load of about 1 kN, the coil spring 62C is deformed slightly before the compression limit of the urethane spring 62U to absorb the compression force Y6. Accordingly, the urethane spring 62U and the coil spring 62C smoothly exchange their roles and work together. In the test result table shown in FIG. 20, the load is 3.92 kN and there is no record beyond the displacement of 15 mm. However, there is actually a little deformation area of the coil spring 61C, so even for a load exceeding 4 kN. Correspondence is possible.

  As described above, in the second vibration control unit 62 of the vibration control bracing B of the second embodiment, the urethane spring 62U works to absorb the vibration and exhibit a restoring force at a low load (compression force Y6). However, at a high load (compression force Y8), the coil spring 62C works to absorb vibrations and exhibit a restoring force, and the action area of the urethane spring 62U and the action area of the coil spring 62C are slightly overlapped. Cooperation is performed extremely smoothly, and the vibration control action is surely exhibited even at a low load (compression force Y6) or a high load (compression force Y8).

As described above, even when the tensile force is applied to the seismic control bracing B of Example 2 (FIG. 18a) or the compressive force is applied (FIG. 18b), the seismic control bracing B reacts completely and evenly. Thus, it is understood that the tensile force or the compressive force is absorbed. That is, the first vibration control unit 61 works for the tensile force, and the second vibration control unit 62 works for the compression force.

Since the action of the first vibration control unit 61 and the second vibration control unit 62 is completely equal, as a result, the vibration control bracing B shows exactly the same response to the compressive force and the tensile force, It can be said that they have exactly the same restoring ability.

In addition, holes h and h are formed in the bottom of the sleeve 43 of the seismic control bracing B of the second embodiment, which is drilled in the bottom of the left sleeve 111 of the seismic control bracing A of the first embodiment. The holes h, h and the holes h, h formed in the bottom of the right sleeve 112 have the same role, that is, prevention of temperature rise in the casing 4 due to ventilation, and the first vibration control unit 61 due to ventilation. This is to ensure the smooth operation of the second vibration control unit 62.

  As described above, the seismic control bracing of the present invention works in the same way for both compressive force and tensile force to absorb vibration. In addition, since a member such as a friction member that is likely to deteriorate is not used, it is maintenance-free, and once embedded in the wall, its function can be maintained semipermanently as it is. In addition, synthetic resin springs work at low loads, metal coil springs work at high loads, and the two working areas are set to overlap, so the mutual cooperation is smooth. The effect can be exhibited equally for both low and high loads.

Due to the above characteristics, the seismic control bracing of the present invention is very useful as a seismic control member that can be easily installed when building or renovating a building today, where a major earthquake such as the Tokai earthquake is expected in the near future. In addition, it is maintenance-free and works equally with tensile and compressive forces, so it has all the elements required for seismic control and has great industrial applicability. It can be said that it is doing.

DESCRIPTION OF SYMBOLS 1 Housing | casing 11 Sleeve 111 Left sleeve 112 Right sleeve 113 Sleeve joint 113a Main body 114 Shield disk 12 Left end cap 12a Circular hole 13 Right end cap 13a Circular hole 21 Left movable shaft 21a Main body 21b Left movable disk 22 Right movable shaft 22a Main body 22b Right-side movable disc 31 1st damping unit 31C coil spring 31H circular hole 31U urethane spring 32 2nd damping unit 32C coil spring 32H circular hole 32U urethane spring 33 3rd damping unit 33C coil spring 33H circular hole 33U urethane spring 34 4th damping Seismic unit 34C Coil spring 34H Circular hole 34U Urethane spring 4 Housing 41 Sleeve 42 Left end cap 42a Circular hole 43 Right end cap 5 Movable shaft 51 Main body 52 Movable disc 61 First damping unit 61C Coil spring 61H Circular hole 61U Urethane spring 62 Second damping unit 62C Coil spring 62H Circular hole 62U Urethane spring A Seismic bracing B Seismic bracing BM beam Cφ Diameter CL Length D1 Partition plate D1a Circular hole D2 Partition plate D2a circular hole D3 partition plate D3a circular hole D4 partition plate D4a circular hole D5 partition plate D5a circular hole D6 partition plate D6a circular hole N1 knuckle N1a circular hole N2 nut N3 knuckle N3a circular hole N4a circular hole N4a circular hole N4a circular hole N4a Nut N7 Knuckle N7a Circular hole P Mounting pin PL Column PL1 Column PL2 Column T Mounting bracket UL Length Ua Mountain part Ub Mountain part Uc Mountain part Ud Mountain part Ue Mountain part Ut Groove Uφ Diameter X1 Tensile force X2 Tensile force X3 Tensile force X3 Tensile force X5 Tensile force X6 Tensile force X7 Tensile force X8 Tensile force Y Compressive force Y2 compressive force Y3 compressive force Y4 compressive force Y5 compressive force Y6 compressive force Y7 compressive force Y8 compressive force dt width du1 width du2 width h holes α angle β angle

Claims (4)

It is a seismic control bracing that has a seismic control mechanism inside,
The vibration control mechanism is a combination of an even number of vibration control units that combine a spring that supports low loads and a spring that supports high loads.
The spring corresponding to low load is made of synthetic resin with a hole in the center and has a groove on the outer periphery to prevent deformation,
The spring corresponding to the high load is a metal coil spring,
The casing is composed of a cylindrical sleeve and a right end cap and a left end cap that are screwed to both ends of the sleeve, and a shielding disc is fixed integrally with the sleeve at the center of the sleeve,
A circular hole is drilled in the center part of the left end cap and right end cap, the left movable shaft is inserted into the circular hole drilled in the left end cap, and the right movable shaft is inserted in the circular hole drilled in the right end cap. Has been inserted,
Near the right end of the left movable shaft, the left movable disk is fixed integrally with the left movable shaft,
Near the left end of the right movable shaft, the right movable disk is fixed integrally with the right movable shaft,
Four sets of vibration control units are stored in the housing, two sets are arranged on the left side of the shielding disk, and the other two are arranged on the right side of the shielding disk.
One of the two sets of vibration control units arranged on the left side of the shielding disc is arranged on the left side of the left movable disc, and the other set is arranged on the right side of the left movable disc.
Of the two sets of damping units arranged on the right side of the shielding disc, one set is arranged on the right side of the right movable disc, and the other set is arranged on the left side of the right movable disc.
Seismic control muscles characterized by that. It is a seismic control bracing that has a seismic control mechanism inside,
The vibration control mechanism is a combination of an even number of vibration control units that combine a spring that supports low loads and a spring that supports high loads.
The spring corresponding to low load is made of synthetic resin with a hole in the center and has a groove on the outer periphery to prevent deformation,
The spring corresponding to the high load is a metal coil spring,
The housing comprises a cylindrical sleeve, a first cap screwed to one end of the sleeve, and a second cap screwed to the other end of the sleeve,
A circular hole is drilled in the central portion of the first cap, and a fixed knuckle is welded outward in the central portion of the second cap.
A movable shaft is inserted through a circular hole drilled in the center portion of the first cap,
A movable disc is fixed integrally with the movable shaft in the vicinity of the tip in the casing of the movable shaft,
Two sets of vibration control units are stored in the housing, one set is arranged on one side of the movable disc, and the other set is arranged on the other side of the movable disc.
Seismic control muscles characterized by that. The range of load that can be supported by a synthetic resin spring that supports low loads is up to 1.8 kN.
  The range of loads that metal coil springs that can handle high loads can handle
The seismic control bracing according to claim 1 or 2, characterized in that it is 1 kN to 5 kN. 4. The seismic control bracing according to claim 1, wherein the sleeve is provided with a ventilation hole.