Vibration damping structure

Abstract

This vibration damping structure comprises: a winding body that is rotatably connected to a building; a connection member which is wound around the winding body from the base end side, the distal end side of which is connected to the building, and which is pulled out from the winding body so that the winding body is rotated in the pull-out direction; and a deformation member that is twisted and deformed by the rotational force in the pull-out direction of the winding body in a state in which the rotation of the winding body in the pull-out direction is restricted when the building is vibrated, thereby allowing the winding body to rotate in the pull-out direction and allowing the connection member to be pulled out from the winding body.

Description

Vibration-damping structure

[0001] The present disclosure relates to a vibration control structure in which a deformable member is deformed when a building is vibrated.

[0002] In the vibration control structure described in JP 2021-127681 A, an external force absorbing damper is connected to a building.

[0003] In this vibration control structure, when the building is vibrated, the external force absorbing damper is bent and deformed, thereby absorbing the vibration energy of the building.

[0004] The present disclosure provides a vibration damping structure that allows the deformation member to be made smaller.

[0005] The vibration control structure of the first aspect of the present disclosure comprises a winding body that is rotatably connected to a building, a connecting member that is wound onto the winding body from the base end and has a tip end connected to the building and is pulled out from the winding body to rotate the winding body in the pull-out direction, and a deformable member that, when the building is vibrated, is torsionally deformed by the rotational force of the winding body in the pull-out direction while restricting the rotation of the winding body in the pull-out direction, thereby allowing the winding body to rotate in the pull-out direction and allowing the connecting member to be pulled out of the winding body.

[0006] The vibration damping structure of a second aspect of the present disclosure is the vibration damping structure of the first aspect of the present disclosure, wherein a rotational force is applied to the winding body in the winding direction of the connecting member.

[0007] A vibration-damping structure according to a third aspect of the present disclosure is the vibration-damping structure according to the first or second aspect of the present disclosure, wherein the winding body and the connecting member are connected in an inclined direction relative to the frame of the building.

[0008] The vibration control structure of the fourth aspect of the present disclosure is a vibration control structure of any one of the first to third aspects of the present disclosure, which comprises multiple sets of the winding body, the connecting member, and the deformable member, and the direction in which the winding body and the connecting member of the first set connect to the building and the direction in which the winding body and the connecting member of the second set connect to the building are inclined in opposite directions relative to the building.

[0009] A vibration control structure of a fifth aspect of the present disclosure is the vibration control structure of any one of the first to fourth aspects of the present disclosure, wherein the connecting member is movably folded back and connected to the building.

[0010] A vibration control structure of a sixth aspect of the present disclosure is a vibration control structure of any one of the first to fifth aspects of the present disclosure, which includes an intervening member interposed between the winding body and at least one of the connecting member and the building.

[0011] The vibration damping structure of a seventh aspect of the present disclosure is the vibration damping structure of any one of the first to sixth aspects of the present disclosure, in which the rotation of the winding body in the unwinding direction is stopped.

[0012] The vibration control structure of an eighth aspect of the present disclosure is a vibration control structure of any one of the first to seventh aspects of the present disclosure, which comprises a rotating body that is connected to the deforming member so as to be rotatable together with the rotating body, and a locking member that locks the rotation of the rotating body in the pull-out direction, wherein the deforming member is connected to the winding body so as to be rotatable together with the rotating body, and the locking member locks the rotation of the rotating body in the pull-out direction, thereby causing the deforming member to limit the rotation of the winding body in the pull-out direction.

[0013] The vibration control structure of the ninth aspect of the present disclosure is the vibration control structure of the eighth aspect of the present disclosure, and is provided with a stopping member that, when the deformation member is torsionally deformed, rotates integrally with the winding body and abuts against the rotating body, thereby stopping the rotation of the winding body in the unwinding direction.

[0014] In the vibration control structure of the first aspect of the present disclosure, a winding body is rotatably connected to a building, a connecting member is wound around the winding body from the base end side, and the tip side of the connecting member is connected to the building.

[0015] When the structure is vibrated, the deforming member restricts the rotation of the winding body in the unwinding direction, and the rotational force of the winding body in the unwinding direction causes the deforming member to twist, allowing the winding body to rotate in the unwinding direction and the connecting member to be unwound from the winding body. Therefore, the torsional deformation of the deforming member can absorb the vibration energy of the structure, and the deforming member can be made smaller.

[0016] In the vibration damping structure of the second aspect of the present disclosure, a rotational force is applied to the winding body in the winding direction of the connecting member, so that the deformation member can be torsionally deformed after the winding body has wound up the connecting member.

[0017] In the vibration-damping structure of the third aspect of the present disclosure, the winding body and the connecting member are connected in an inclined direction relative to the frame of the building, and therefore, when the shape of the frame is deformed by vibration of the building, the connecting portion of the frame is separated from the connecting portion of the winding body, and a force in the pull-out direction of the connecting member acts between the connecting member and the winding body, causing torsional deformation of the deformable member.

[0018] The vibration damping structure of the fourth aspect of the present disclosure includes a plurality of sets of a winding body, a connecting member, and a deforming member.

[0019] Here, the direction in which the first set of winding bodies and connecting members connect to the building and the direction in which the second set of winding bodies and connecting members connect to the building are inclined in opposite directions relative to the building, so that vibrations to one side of the building can torsionally deform the first set of deformable members, and vibrations to the other side of the building can torsionally deform the second set of deformable members.

[0020] In the vibration-damping structure according to the fifth aspect of the present disclosure, the connecting member is movably folded back and connected to the building, thereby increasing the vibration-damping load of the building by the deformable member.

[0021] In the vibration damping structure of the sixth aspect of the present disclosure, an interposition member is interposed between the structure and at least one of the winding body and the connecting member, which allows the connecting member to be short and reduces the amount of elongation of the connecting member when the structure is vibrated.

[0022] In the vibration-damping structure of the seventh aspect of the present disclosure, rotation of the winding body in the unwinding direction is stopped. Therefore, by stopping the unwinding of the connecting member from the winding body, an increase in the amount of vibration of the building can be suppressed.

[0023] The vibration-damping structure of an eighth aspect of the present disclosure includes a rotor coupled to the deformable member for integral rotation and a locking member that locks the rotor against rotation in the unwinding direction, the deformable member being coupled to the winding member for integral rotation, and the locking member locking the rotor against rotation in the unwinding direction, thereby restricting the rotation of the winding member in the unwinding direction. With this configuration, when the building is vibrated, the deformable member is torsionally deformed by the rotational force of the winding member in the unwinding direction while restricting the rotation of the winding member in the unwinding direction, thereby allowing the winding member to rotate in the unwinding direction and allowing the connecting member to be unwound from the winding member. Therefore, the torsional deformation of the deformable member can absorb the vibration energy of the building and the deformable member can be made smaller.

[0024] In the vibration-damping structure of a ninth aspect of the present disclosure, a stopping member is provided that, when the deforming member is torsionally deformed, rotates integrally with the winding body and abuts against the rotating body to stop the winding body from rotating in the unwinding direction. Therefore, by stopping the unwinding of the connecting member from the winding body, an increase in the amount of vibration of the building can be suppressed.

[0025] 4A is a front view showing a vibration damping structure according to an embodiment of the present disclosure. FIG. 4B is a front view showing one side of the vibration damping structure according to an embodiment of the present disclosure. FIG. 4C is a perspective view showing one side of the vibration damping structure according to an embodiment of the present disclosure. FIG. 4D is a front view showing the other side of the vibration damping structure according to an embodiment of the present disclosure. FIG. 4E is a perspective view showing the other side of the vibration damping structure according to an embodiment of the present disclosure. FIG. 4F is a side view showing an extension state of the webbing in the vibration damping structure according to an embodiment of the present disclosure. FIG. 4G is a side view showing a first modified example of the extension state of the webbing shown in FIG. 4A. FIG. 4H is a side view showing a second modified example of the extension state of the webbing shown in FIG. 4A. FIG. 4H is a cutaway front view showing a take-up device of the vibration damping structure according to an embodiment of the present disclosure. FIG. 4I is an exploded perspective view showing a take-up device of the vibration damping structure according to an embodiment of the present disclosure. FIG. 4I is a graph showing the relationship between the amount of webbing pulled out (horizontal axis) and the pulling load of the webbing (vertical axis) in the vibration damping structure according to an embodiment of the present disclosure.

[0026] 1 shows a front view of a vibration-damping structure 10 according to an embodiment of the present disclosure. Note that in Fig. 1 and other figures, the upper side of the vibration-damping structure 10 is indicated by an arrow UP, and one side of the vibration-damping structure 10 is indicated by an arrow OS.

[0027] As shown in Figure 1, the vibration control structure 10 of this embodiment is installed within the wall of a building 12, which is a structural structure, and the upper and one side of the vibration control structure 10 are oriented upward and horizontally of the building 12, respectively.

[0028] A frame portion 14 having a rectangular shape in a front view is formed on the wall portion of the building 12. One side of the frame portion 14 is a side column 14A as a first part, and the other side of the frame portion 14 is an other side column 14B as a second part, with the one side column 14A and the other side column 14B constituting the columns of the building 12. The upper side of the frame portion 14 is an upper member 14C as a third part, and the lower side of the frame portion 14 is a lower member 14D as a fourth part, with the upper member 14C and the lower member 14D constituting the upper partition portion 12A (first partition portion) and the lower partition portion 12B (second partition portion) of the building 12, respectively.

[0029] The vibration-damping structure 10 is provided with two sets of vibration-damping devices 16 (hereinafter, the two sets of vibration-damping devices 16 are referred to as a "first vibration-damping device 16A" and a "second vibration-damping device 16B").

[0030] The vibration damping device 16 is provided with a metal, generally rectangular upper bracket 18 as a fixing member, with a triangular upper fixing plate 18A protruding from the upper bracket 18. The vibration damping device 16 is provided with a metal, generally rectangular lower bracket 20 as a fixing member, with a triangular lower fixing plate 20A protruding from the lower bracket 20.

[0031] In the first vibration control device 16A, the upper bracket 18 is fixed to the other side of the upper end of one side column 14A of the frame 14 of the building 12, and the upper fixing plate 18A of the upper bracket 18 protrudes to the other side. The lower bracket 20 is fixed to one side of the lower end of the other side column 14B of the frame 14, and the lower fixing plate 20A of the lower bracket 20 protrudes to one side.

[0032] In the second vibration damping device 16B, an upper bracket 18 is fixed to one side of the upper end of the other side column 14B, and an upper fixing plate 18A of the upper bracket 18 protrudes to one side. A lower bracket 20 is fixed to the other side of the lower end of the one side column 14A, and a lower fixing plate 20A of the lower bracket 20 protrudes to the other side.

[0033] The vibration damping device 16 is provided with a winding device 24 (see FIGS. 5 and 6). In FIGS. 5 and 6, the arrow DU indicates the upper side of the winding device 24, the arrow DL indicates the left side of the winding device 24, and the arrow DF indicates the front side of the winding device 24.

[0034] The retraction device 24 is provided with a metal frame 26 having a U-shaped cross section. A back plate 26A is provided on the rear side of the frame 26, and the frame 26 is fixed at the device's lower end portion of the back plate 26A to the lower fixing plate 20A of the lower bracket 20 with bolts and nuts, thereby installing the retraction device 24 on the vibration damping device 16. In the first vibration damping device 16A, the device's upper side of the retraction device 24 faces upward and toward one side, while in the second vibration damping device 16B, the device's upper side faces upward and toward the other side, and in both the first vibration damping device 16A and the second vibration damping device 16B, the device's left-right direction of the retraction device 24 is perpendicular to the front direction of the vibration damping structure 10 (a direction perpendicular to the upward and one side). The frame 26 is provided with leg plates 26B and 26C on the left and right sides of the device, respectively, and the leg plates 26B and 26C face each other in the left-right direction of the device.

[0035] A metallic, substantially cylindrical spool 28 serving as a winding body is provided between leg plates 26B and 26C, with the axial direction of the spool 28 extending in the left-right direction of the device. The spool 28 penetrates through leg plates 26B and 26C and is rotatably supported by frame 26. The right end of the spool 28 is coaxially expanded to form a restricting hole 28A, which has a hexagonal (non-circular) cross section.

[0036] A long strip-shaped webbing 30 serving as a connecting member is wound from the base end side around the outer periphery of the spool 28, and the webbing 30 is made of woven fabric. When the spool 28 is rotated in the winding direction (the direction of arrow A in FIG. 6 ), the webbing 30 is wound onto the spool 28. On the other hand, when the webbing 30 is unwound from the spool 28, the spool 28 is rotated in the unwinding direction (the direction of arrow B in FIG. 6 ). The webbing 30 extends from the frame 26 to the upper side of the device.

[0037] The inner end of a metal rotation spring 32 (spiral spring) serving as a biasing member is connected to the left end of the spool 28 via the left end of a torsion shaft 34 described below, and the rotation spring 32 is disposed on the left side of the frame 26 (leg plate 26B). The outer end of the rotation spring 32 is connected to the frame 26, and the rotation spring 32 biases the spool 28 in the winding direction, so that a biasing force in the winding direction of the spool 28 acts on the webbing 30.

[0038] A metal, approximately cylindrical torsion shaft 34 is inserted coaxially within the spool 28 as a deformation member, and the left side of the torsion shaft 34 is connected to the left end of the device within the spool 28 so as to be rotatable together with the left end of the device, and the left end of the device protrudes from the spool 28 to the left side of the device.

[0039] A metallic, generally cylindrical lock base 36 serving as a rotor is coaxially mounted on the right side of the spool 28. The right side portion of the torsion shaft 34 coaxially passes through the lock base 36, and the lock base 36 is coupled to the torsion shaft 34 so as to be rotatable integrally therewith. The right side portion of the lock base 36 is formed as a ratchet 36A, and ratchet teeth 36B are formed on the entire outer periphery of the ratchet 36A. The left side portion of the lock base 36 has a reduced diameter relative to the ratchet 36A and is coaxially inserted into the restriction hole 28A of the spool 28, and a male thread 36C is formed on the entire outer periphery of the left side portion of the lock base 36.

[0040] On the right side of the frame 26 (leg plate 26C), a metal, plate-shaped lock plate 38 serving as a locking member is rotatably supported at its base end below the lock base 36 (ratchet 36A), with lock teeth 38A formed at the tip of the lock plate 38. A retention spring 40 (compression coil spring) serving as a retention member is stretched between the lock plate 38 and the leg plate 26C, and the retention spring 40 biases the lock plate 38 toward the ratchet 36A, causing the lock teeth 38A to mesh with the ratchet teeth 36B of the ratchet 36A. When the lock base 36 is rotated in the pull-out direction, the lock plate 38 locks the rotation of the lock base 36 (ratchet 36A) in the pull-out direction, thereby locking the rotation of the torsion shaft 34 and the spool 28 in the pull-out direction. On the other hand, when the lock base 36 is rotated in the winding direction, the ratchet teeth 36B move the lock teeth 38A radially outward of the ratchet 36A against the force of the retaining spring 40, causing the lock plate 38 to rotate in the opposite direction to the ratchet 36A, thereby allowing the lock plate 38 to rotate in the winding direction, and thereby allowing the torsion shaft 34 and spool 28 to rotate in the winding direction.

[0041] A metal, annular stopper 42 serving as a stopping member is inserted into the restriction hole 28A of the spool 28. The stopper 42 has a hexagonal (non-circular) outer periphery and is fitted into the restriction hole 28A, so that the stopper 42 rotates integrally with the spool 28. A female thread 42A is formed on the entire inner periphery of the stopper 42, and the female thread 42A is threadedly engaged with the male thread 36C of the lock base 36. The stopper 42 is disposed at the left end of the male thread 36C, so that when the spool 28 and stopper 42 are rotated in the pull-out direction relative to the lock base 36, the stopper 42 moves along the threads of the male thread 36C to the right side of the device (the ratchet 36A side of the lock base 36).

[0042] A metallic brace 44 having a generally long rod shape is interposed as an intervening member between the upper fixing plate 18A of the upper bracket 18 and the retraction device 24, and the upper end of the brace 44 is fixed to the upper fixing plate 18A with bolts and nuts. In the first vibration damping device 16A, the brace 44 extends downward as it approaches the other side, while in the second vibration damping device 16B, the brace 44 extends downward as it approaches one side.

[0043] A first through anchor 48 (see FIGS. 2A and 2B, 3A and 3B, and 4A) made of metal and shaped like a substantially triangular plate, serving as a winding member, is fixed to the lower end of the brace 44 with a bolt and a nut, and an insertion hole 48A is formed through the first through anchor 48, and a substantially cylindrical winding portion 48B is formed below the insertion hole 48A. In the first through anchor 48, a portion of the webbing 30 on the tip side of the spool 28 of the retractor 24 is inserted into the insertion hole 48A, and the webbing 30 is wound around the winding portion 48B and folded back downward.

[0044] A second through anchor 50 (see FIGS. 2A, 2B, and 4A), which is made of metal and has a substantially triangular plate shape and serves as a winding member, is fixed to the lower fixing plate 20A of the lower bracket 20 on the side opposite to the frame 26 (back plate 26A) of the retractor 24 by bolts and nuts, and the second through anchor 50 has an insertion hole 50A and a winding portion 50B formed therein, similar to the first through anchor 48, and the winding portion 50B is disposed above the insertion hole 50A. In the second through anchor 50, a portion of the webbing 30 further to the tip side than the first through anchor 48 is inserted into the insertion hole 50A, and the webbing 30 is wound around the winding portion 50B and folded back upward.

[0045] At the lower end of the brace 44, on the opposite side from the first through anchor 48, a metal anchor 52 having an approximately rectangular plate shape is fixed together with the first through anchor 48 by a bolt and nut as a connecting member, and the tip of the webbing 30 (the portion tipward of the second through anchor 50) is connected to the anchor 52.

[0046] As a result of the above, the webbing 30 is connected to the brace 44, and the extension direction of the portion of the webbing 30 between the spool 28 and the first through anchor 48, the portion between the first through anchor 48 and the second through anchor 50, and the portion between the second through anchor 50 and the anchor 52 is parallel to the extension direction of the brace 44.

[0047] Next, the operation of this embodiment will be described.

[0048] In the vibration control structure 10 configured as described above, when the building 12 is vibrated by an earthquake or the like and the upper partition 12A (upper member 14C of the frame 14) moves back and forth relative to the lower partition 12B (lower member 14D of the frame 14) of the building 12, the frame 14 is alternately deformed to one side and the other in a parallelogram shape when viewed from the front. As a result, a state in which the distance between the upper bracket 18 and the lower bracket 20 of the first vibration control device 16A is increased while the distance between the upper bracket 18 and the lower bracket 20 of the second vibration control device 16B is decreased, and a state in which the distance between the upper bracket 18 and the lower bracket 20 of the second vibration control device 16B is increased while the distance between the upper bracket 18 and the lower bracket 20 of the first vibration control device 16A is decreased are alternately repeated.

[0049] When the distance between the upper bracket 18 and the lower bracket 20 of the vibration damping device 16 is increased, a pull-out force is applied to the webbing 30 from the spool 28 in the retractor 24, causing a rotational force in the pull-out direction to act on the spool 28. Then, in a state in which the lock plate 38 locks the rotation of the lock base 36 in the pull-out direction (a state in which the torsion shaft 34 restricts the rotation of the spool 28 in the pull-out direction), the rotational force in the pull-out direction applied from the webbing 30 to the spool 28 causes torsional deformation of the torsion shaft 34, thereby allowing rotation of the spool 28 in the pull-out direction and allowing the webbing 30 to be pulled out from the spool 28. Therefore, the torsion shaft 34 absorbs the vibration energy of the building 12 while damping the vibration of the building 12.

[0050] On the other hand, when the distance between the upper bracket 18 and the lower bracket 20 of the vibration damping device 16 is reduced, slack occurs in the webbing 30 in the retractor 24. Then, with the lock plate 38 allowing the lock base 36 to rotate in the retraction direction, the spool 28 (including the torsion shaft 34 and the lock base 36) is rotated in the retraction direction by the biasing force of the rotation spring 32, whereby the webbing 30 is retracted onto the spool 28 and the slack in the webbing 30 is removed.

[0051] Here, as described above, the torsion shaft 34 is torsionally deformed to absorb the vibration energy of the building 12. Therefore, unlike when the torsion shaft 34 is bent to absorb the vibration energy of the building 12, the amount of vibration energy of the building 12 absorbed by the deformation of the torsion shaft 34 can be increased, and the torsion shaft 34 can be made smaller.

[0052] Furthermore, when slack occurs in the webbing 30, the urging force of the rotation spring 32 causes the spool 28 to rotate in the winding direction (the webbing 30 is wound onto the spool 28), thereby removing the slack in the webbing 30. Therefore, after the slack in the webbing 30 is removed, a pull-out force from the spool 28 is applied to the webbing 30, causing the torsion shaft 34 to torsionally deform. This makes it possible to increase the amount of torsional deformation of the torsion shaft 34, unlike when the torsion shaft 34 is torsionally deformed without removing the slack in the webbing 30, and therefore increases the amount of vibration energy of the building 12 that the torsion shaft 34 absorbs. Furthermore, because the slack is removed each time it occurs in the webbing 30, the vibration energy of the building 12 can be repeatedly absorbed.

[0053] Furthermore, in the vibration control device 16, the retractor 24 (including the spool 28 and the webbing 30) and the brace 44 are connected in an oblique direction to the frame 14 (one side column 14A, the other side column 14B, the upper member 14C, and the lower member 14D) of the building 12. For this reason, vibration of the building 12 causes the frame 14 to deform into a parallelogram shape when viewed from the front, and the upper bracket 18 (the portion connecting to the webbing 30) and the lower bracket 20 (the portion connecting to the spool 28) in the frame 14 are separated from each other, so that a force in the unwinding direction of the webbing 30 can be applied between the webbing 30 and the spool 28, causing the torsion shaft 34 to undergo torsional deformation.

[0054] Furthermore, the direction in which the take-up device 24 (including the spool 28 and the webbing 30) and the brace 44 of the first vibration damping device 16A connect to the frame portion 14 is opposite to the direction in which the take-up device 24 (including the spool 28 and the webbing 30) and the brace 44 of the second vibration damping device 16B connect to the frame portion 14. Therefore, deformation of the frame portion 14 to one side can cause torsion deformation of the torsion shaft 34 of the first vibration damping device 16A, and deformation of the frame portion 14 to the other side can cause torsion deformation of the torsion shaft 34 of the second vibration damping device 16B, so that the vibration energy of the building 12 can be absorbed alternately and seamlessly by the torsion shaft 34 of the first vibration damping device 16A and the torsion shaft 34 of the second vibration damping device 16B.

[0055] Furthermore, the portion of the webbing 30 distal to the spool 28 is folded back at the first through anchor 48 and the second through anchor 50 and connected to the upper bracket 18 (brace 44). Therefore, in order for the torsion shaft 34 to be torsionally deformed, three portions of the webbing 30 need to be pulled from the upper bracket 18. As a result, the load applied to the upper bracket 18 to torsionally deform the torsion shaft 34 in the vibration damping device 16 is three times the torsional deformation load of the torsion shaft 34 (the load that torsionally deforms the torsion shaft 34 when the webbing 30 is connected to the upper bracket 18 without being folded back), thereby increasing the vibration damping load of the building 12 by the torsion shaft 34. Moreover, compared to when the webbing 30 is connected to the upper bracket 18 without being folded back, the load input to the webbing 30 from the upper bracket 18 can be reduced to one-third, thereby suppressing damage to the webbing 30.

[0056] Furthermore, a brace 44 is interposed between the webbing 30 and the upper bracket 18. This allows the webbing 30 to be shortened, and when the building 12 vibrates, the amount of elongation of the entire webbing 30 can be reduced, allowing the torsion shaft 34 to be appropriately torsionally deformed by the pulling force from the spool 28 acting on the webbing 30.

[0057] Furthermore, when rotation of the spool 28 in the unwinding direction is permitted (when the torsion shaft 34 is torsionally deformed), the spool 28 and the stopper 42 are rotated in the unwinding direction relative to the lock base 36, and the stopper 42 is moved toward the ratchet 36A along the threads of the male screw 36C of the lock base 36. Then, the spool 28 is permitted to rotate a predetermined number of times in the unwinding direction, and the stopper 42 comes into contact with the ratchet 36A, thereby disabling the spool 28 and the stopper 42 from rotating in the unwinding direction relative to the lock base 36, and further rotation of the spool 28 in the unwinding direction is stopped. Therefore, the pulling load of the webbing 30 from the spool 28 increases rapidly (see FIG. 7 ), which suppresses an increase in the amount of vibration of the building 12 and appropriately suppresses the collapse of the building 12.

[0058] In the present embodiment, the portion of the webbing 30 distal from the spool 28 is folded back at two positions. However, the portion of the webbing 30 distal from the spool 28 may be folded back at one position (see FIG. 4B ), the portion of the webbing 30 distal from the spool 28 may be folded back at three or more positions (see FIG. 4C ), or the portion of the webbing 30 distal from the spool 28 may not be folded back. In FIG. 4B , the second through anchor 50 is omitted, and the anchor 52 is fixed to the frame 26. In FIG. 4C , a first through anchor 48 is added, and the anchor 52 is fixed to the frame 26.

[0059] Furthermore, in this embodiment, the brace 44 is interposed between the webbing 30 and the upper bracket 18. However, the brace 44 may be interposed between the frame 26 and the lower bracket 20. Also, the brace 44 may not be provided, and the webbing 30 (anchor 52) may be fixed to the upper bracket 18.

[0060] In this embodiment, the upper bracket 18 and the lower bracket 20 are fixed to the one side column 14A or the other side column 14B. However, the upper bracket 18 may be fixed to the upper member 14C, and the lower bracket 20 may be fixed to the lower member 14D.

[0061] Furthermore, in this embodiment, the connecting member is the webbing 30. However, the connecting member may also be a wire or a rope.

[0062] In this embodiment, the vibration control structure 10 is installed inside the wall of the building 12. However, the vibration control structure 10 may also be installed inside a column of the building 12, inside the upper partition 12A, or inside the lower partition 12B.

[0063] Furthermore, in this embodiment, the vibration control structure 10 is applied to a building 12. However, the vibration control structure 10 may be applied to any structure, and may be applied to any building other than the building 12, a bridge, or a ship.

[0064] The disclosure of Japanese Patent Application No. 2023-122472, filed on July 27, 2023, is incorporated herein by reference in its entirety.

[0065] All publications, patent applications, and technical standards mentioned in this specification are herein incorporated by reference to the same extent as if each individual publication, patent application, or technical standard was specifically and individually indicated to be incorporated by reference.

Claims

1. A vibration control structure comprising: a winding body rotatably connected to a structure; a connecting member that is wound onto the winding body from a base end and has a tip end connected to the structure and is pulled out from the winding body to rotate the winding body in the pull-out direction; and a deformation member that, when the structure is vibrated, is torsionally deformed by the rotational force of the winding body in the pull-out direction while restricting the rotation of the winding body in the pull-out direction, thereby allowing the winding body to rotate in the pull-out direction and allowing the connecting member to be pulled out of the winding body.

2. A vibration damping structure as claimed in claim 1, wherein a rotational force is applied to said winding body in the winding direction of said connecting member.

3. A vibration-damping structure as described in claim 1, in which the winding body and the connecting member are connected in an inclined direction relative to the frame of a building.

4. A vibration control structure as described in claim 1, comprising a plurality of sets of the winding body, the connecting member and the deformable member, wherein the direction in which the winding body and the connecting member of a first set connect to the structure is opposite to the direction in which the winding body and the connecting member of a second set connect to the structure in inclination with respect to the structure.

5. A vibration control structure according to claim 1, wherein said connecting member is movably folded back and connected to the structure.

6. A vibration-damping structure according to claim 1, further comprising an interposition member interposed between the structure and at least one of the winding body and the connecting member.

7. A vibration damping structure as claimed in claim 1, which stops the rotation of the winding body in the unwinding direction.

8. A vibration damping structure as described in claim 1, comprising a rotating body connected to the deformable member so as to be rotatable together with it, and a locking member that locks the rotation of the rotating body in the pull-out direction, wherein the deformable member is connected to the winding body so as to be rotatable together with it, and the locking member locks the rotation of the rotating body in the pull-out direction, thereby causing the deformable member to limit the rotation of the winding body in the pull-out direction.

9. A vibration damping structure as described in claim 8, further comprising a stopping member which, when the deformation member is torsionally deformed, rotates integrally with the winding body and abuts against the rotating body to stop allowing the winding body to rotate in the unwinding direction.

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