JP6249209B2 - Displacement suppression device and displacement suppression system - Google Patents

Description

  The present invention relates to a displacement suppression device and a displacement suppression system that suppress displacement of an object. The object is, for example, an object (seismic isolation object) that can be moved by the seismic isolation system. The seismic isolation object is, for example, a building.

  There is known a seismic isolation system in which the seismic isolation object is displaceable in a horizontal direction with respect to a support structure that supports the seismic isolation object. Such a seismic isolation system can reduce the acceleration applied to the seismic isolation object when an earthquake occurs. However, when the displacement of the seismic isolation object becomes excessive, inconveniences such as a collision between the seismic isolation object and the surrounding structure occur.

  Patent Document 1 proposes a displacement suppression device that can be used for various applications, and discloses that this displacement suppression device can be used to suppress the displacement of a seismic isolation object.

  The displacement suppression device of Patent Document 1 includes a configuration similar to a tape measure. That is, this displacement suppressing device has a flexible long member with one end fixed to the seismic isolation object, and the other end of the long member is fixed and rotated to wind and pull out the long member. And a winding member that makes it possible.

  When the seismic isolation object moves to one side in the predetermined direction, the long member is pulled out. At this time, a frictional force (friction resistance) in a direction in which the rotation is suppressed is applied to the winding member that rotates by pulling out the long member. As a result, the kinetic energy of the seismic isolation object is dissipated and the displacement of the seismic isolation object is suppressed.

  On the other hand, when the seismic isolation object moves to the other side in the predetermined direction, the long member is wound around the winding member by the mainspring spring. At this time, no frictional force is applied to the winding member, and preparation for the next drawing of the long member is made quickly.

JP 2013-2532 A

  As described above, when the seismic isolation object moves to one side, the displacement suppressing device of Patent Literature 1 contributes to suppressing the displacement of the seismic isolation object by pulling out the long member. However, the displacement suppression device of Patent Document 1 does not contribute to suppressing the displacement with respect to the movement of the seismic isolation object to the other side. Therefore, when applying the displacement suppression apparatus of patent document 1 to a seismic isolation system, for example, two displacement suppression apparatuses opposite to each other are necessary.

  However, when a plurality of displacement suppression devices of Patent Document 1 are provided, various disadvantages occur. This inconvenience will be described in detail when the operational effects of the embodiment of the present application are described. As described above, it is desirable to provide a displacement suppression device and a displacement suppression system suitable for multi-directional displacement suppression.

  A displacement suppression device according to an aspect of the present invention is a displacement suppression device that suppresses displacement of an object with respect to a reference object, and includes two sets of displacement suppression units and a damping mechanism shared by the two sets of displacement suppression units. Each of the two sets of displacement suppression units includes a base body fixed to one of the reference object and the object, and a flexible member whose one end is fixed to the other of the reference object and the object. A long member having a magnetic property, a winding member rotatably supported by the base, and capable of winding the long member from the other end side, and the winding member attached in the direction of winding the long member. An urging mechanism for urging and a one-way clutch for transmitting rotation of the winding member in a direction in which the elongated member is pulled out, and the damping mechanism is provided by the one-way clutch of the two sets of displacement suppression units. Winding Ri has the length and the rotating member rotatable rotation is transmitted in the direction pulling out the elongated member of the member, and a fixing member for applying a damping force against the rotation to the rotating member.

  Preferably, the damping mechanism includes a plurality of combinations of the rotating member and the fixing member, and the long member of the winding member transmitted from the one-way clutch of the two sets of displacement suppression units. It further has a transmission mechanism for transmitting the rotation in the pulling direction to the plurality of rotating members.

  Preferably, the transmission mechanism is a gear mechanism.

  Preferably, the damping mechanism can attach a plurality of rotating members, and rotate the winding members from the one-way clutch in the direction of pulling out the long member of the two sets of displacement suppression units. It further has a support mechanism to which a transmission mechanism for transmitting to a plurality of rotating members can be attached.

  Preferably, each of the two sets of displacement suppression units further includes an alignment mechanism that aligns and winds the long member around the winding member.

  A displacement suppression system according to an aspect of the present invention is configured to contact the long member between the displacement suppression device, the winding member, the reference object, and the other of the objects. And a pulley for changing the direction of the member.

  Preferably, the two sets of displacement suppression units are arranged such that directions in which the long members are pulled out from the winding member are opposite to each other in plan view, and the pulleys are configured to be the two sets of displacement suppression units. Two such long members are provided so as to be folded back toward the winding member.

  According to said structure, the displacement of a multi-direction can be suppressed suitably.

FIG. 1A and FIG. 1B are schematic side views for explaining the outline of the displacement suppression system according to the first embodiment of the present invention. The typical top view which shows the structure of the displacement suppression system of FIG. 1 in more detail than FIG. FIGS. 3A and 3B are diagrams for explaining the operation of the displacement suppression system of FIG. The schematic diagram which shows the structure of the displacement suppression apparatus which concerns on the 2nd Embodiment of this invention.

<First Embodiment>
FIG. 1A and FIG. 1B are schematic side views for explaining the outline of the displacement suppression device 3 according to the first embodiment of the present invention and the displacement suppression system 1 including the displacement suppression device 3. is there. In FIG. 1, the x direction and the y direction are horizontal directions, and the z direction is a vertical direction.

  The displacement suppression system 1 (displacement suppression device 3) is configured as a device that suppresses the displacement of the seismic isolation object 103 with respect to the support structure 101. The combination of the support structure 101 and the seismic isolation object 103 is supported by, for example, a combination of a base part of a structure and a structure such as a house supported by the base part, a structure such as a house, and the structure. It is a combination of furniture.

  Although not shown in particular, the seismic isolation object 103 is supported by the support structure 101 via a so-called isolator, and is movable in the horizontal direction with respect to the support structure 101. The isolator is, for example, a laminated rubber, a rolling bearing, or a sliding bearing. The displacement suppression system 1 contributes to the attenuation of the vibration of the seismic isolation object 103, but a so-called damper may be provided separately from the displacement suppression system 1.

  The displacement suppression device 3 includes a first displacement suppression unit 5A and a second displacement suppression unit 5B. In the following description, the displacement displacement unit 5 is simply referred to as “displacement suppressing unit 5”, and the two may not be distinguished. Each displacement suppression unit 5 includes a configuration similar to a tape measure or a fishing reel, and includes a main body portion 7 and a wire 9 that can be pulled out and taken up from the main body portion 7.

  One of the main body 7 and the wire 9 (the main body 7 in this embodiment) is fixed to the support structure 101, and the other of the main body 7 and the wire 9 (the wire 9 in this embodiment) is a seismic isolation target. It is fixed to the object 103. Therefore, when the seismic isolation object 103 is displaced with respect to the support structure 101, the wire 9 is pulled out from the main body portion 7 or the wire 9 is allowed to be wound around the main body portion 7.

  When the wire 9 is pulled out, the main body portion 7 is configured to generate resistance due to frictional force with respect to the drawing. Therefore, for example, when an earthquake with a relatively high acceleration occurs and the seismic isolation object 103 moves while pulling the wire 9 from the main body 7, the kinetic energy of the seismic isolation object 103 is converted into heat energy by friction and dissipated. The Thereby, the displacement of the seismic isolation object 103 is suppressed. From another viewpoint, the vibration of the seismic isolation object 103 is attenuated. When an earthquake with a relatively low acceleration (long-period earthquake) occurs, the seismic isolation object 103 cannot pull out the wire 9 from the main body 7 against the frictional force, and the support structure 101 Is not displaced.

  The displacement suppression system 1 includes two displacement suppression units so that the above action can be obtained even when the seismic isolation object 103 moves to the positive side or the negative side in the x direction with respect to the support structure 101. 5 in an appropriate orientation and arrangement.

  Specifically, for example, in the two displacement suppression units 5, the main body portion 7 is adjacent to each other in the x direction, and the drawing directions of the two wires 9 are opposite to each other in the x direction (more specifically, outside each other). It is arranged to become. In addition, the displacement suppression system 1 includes a pulley 11 that folds a wire 9 extending from the main body 7 toward the main body 7 for each of the two displacement suppression units 5. And the front-end | tip of the two wires 9 is being fixed to the seismic isolation object 103 inside the x direction rather than the pulley 11 (main-body part 7 side). The two displacement suppression units 5 are generally arranged symmetrically in the x direction.

  Accordingly, when the seismic isolation object 103 moves from the reference position (neutral position) shown in FIG. 1 (a) to the positive side in the x direction, it is arranged on the negative side in the x direction as shown in FIG. 1 (b). The wire 9 of the first displacement suppression unit 5A is pulled out, and the wire 9 of the second displacement suppression unit 5B disposed on the positive side in the x direction is wound up. Although not particularly illustrated, on the contrary, when the seismic isolation object 103 moves to the negative side in the x direction, the wire 9 of the second displacement suppression unit 5B arranged on the positive side in the x direction is pulled out, and the x direction The wire 9 of the first displacement suppression unit 5A disposed on the negative side of the wire is wound up.

  FIG. 2 is a schematic plan view (partly including a cross-sectional view) showing the configuration of the displacement suppression system 1 (displacement suppression device 3) in more detail than FIG. In addition, in FIG. 2, the attachment part 103a to which the front-end | tip of the wire 9 is fixed among the seismic isolation objects 103 is also typically shown.

  The displacement suppression device 3 includes the above-described two sets of displacement suppression units 5 and a friction mechanism 13 shared by the two sets of displacement suppression units 5. Each displacement suppression unit 5 includes the wire 9 and the main body 7 as described above.

  The wire 9 is a wire or a bundle of wires (wire rope), and has flexibility. The material (metal) is, for example, steel. In addition, it is preferable that the cross-sectional shape of the wire which comprises the wire 9 is circular.

  The main body 7 includes a winding member 15 around which the wire 9 is wound, a spring portion 17 that generates a biasing force that rotates the winding member 15 in a direction in which the wire 9 is wound, and rotation from the winding member 15 to the friction mechanism 13. A clutch 19 for controlling the transmission of the wire 9 and an alignment mechanism 21 for aligning and winding the wire 9 around the winding member 15.

  The winding member 15, the spring portion 17, the clutch 19, the alignment mechanism 21, the friction mechanism 13, and the like are provided on a base 23 (only a part of which is illustrated) configured by appropriately combining plate-like members or frame-like members. Is retained. The base 23 is fixed to the support structure 101.

  The winding member 15 is rotatably supported by the base 23 via an appropriate shaft support mechanism, and one end of the wire 9 (one end opposite to one end fixed to the seismic isolation object 103) is fixed. ing. The body part around which the wire 9 of the winding member 15 is wound is, for example, cylindrical or columnar. The trunk portion has, for example, an axial length that is several times or more the diameter of the wire 9.

  In FIG. 1 and FIG. 2, the rotation direction of the two winding members 15 when winding the wire 9 is the same direction (clockwise as viewed in the y-axis direction), and as a result, the drawn wire 9 is pulled out. The vertical positions of the two winding members 15 are opposite to each other between the two winding members 15. On the contrary, the rotation directions of the two winding members 15 when the wire 9 is wound are opposite to each other. It may be a direction.

  The spring portion 17 includes, for example, a spring 18 (schematically shown in FIG. 3 described later). The spring 18 is a so-called mainspring (spiral spring). The mainspring may be a non-contact type, a contact type, an S-shape, a constant torque type, a constant load type, or a strip-shaped cross section perpendicular to the length direction. A material may be wound, or a wire material having a cross-sectional shape orthogonal to the length direction, such as a circular shape, may be wound. The mainspring material is, for example, a metal such as high carbon steel or stainless steel.

  For example, one end of the spring 18 is fixed to the winding member 15 and the other end is fixed to the base body 23. The spring 18 is deformed by a restoring force in a direction extending from the wound state, thereby rotating the winding member 15 and causing the winding member 15 to wind the wire 9. When the seismic isolation object 103 moves within the assumed range (both amplitudes), the spring 18 has a sufficient amount of deformation in the elastic region so that the restoring force can be exerted throughout the range, and the seismic isolation is performed. When the object 103 is at the reference position (FIG. 1 (a)), the object 103 is caught in an appropriate amount.

  The clutch 19 is a so-called one-way clutch, and outputs the rotation of the winding member 15 in the direction in which the wire 9 is pulled out to the output shaft 19a (transmits it to the friction mechanism 13), while the opposite direction (the wire 9 is wound up). The rotation in the direction to be generated is not output to the output shaft 19a (not transmitted to the friction mechanism 13). Strictly speaking, depending on the configuration of the clutch 19, the rotation in the opposite direction is output (transmitted) with a very small amount of force, but here it is expressed as not output (transmitted). The one-way clutch may have a known configuration such as a sprag type or a roller type.

  The alignment mechanism 21 is for making the wire 9 be aligned and wound around the winding member 15 as described above. In the aligned winding, the wires 9 are sequentially arranged in the axial direction of the winding member 15 every one turn. In addition, after wire 9 is sequentially arranged in the axial direction for every one turn, it may be further aligned and wound on it (may be wound in multiple layers from the inner periphery side to the outer periphery side). ) Only one layer may be wound.

  The configuration of the alignment mechanism 21 may be a known appropriate one. For example, the alignment mechanism 21 realizes aligned winding by so-called copying winding. Specifically, for example, the alignment mechanism 21 includes a roller 22 for guiding the wire 9 between the winding member 15 and the pulley 11. The roller 22 can swing in the axial direction (y direction) of the winding member 15, and abuts against a portion of the wire 9 that is drawn from the winding member 15 by a biasing force of a spring (not shown). . The abutting direction is a direction in which the drawn portion of the wire 9 is pressed against the side surface of the wound portion of the wire 9. Therefore, when the winding member 15 rotates in the direction of winding the wire 9, the portion that has been drawn out from the winding member 15 is in contact (positioned) with the side surface of the already wound portion. Thus, the aligned winding of the wire 9 is realized.

  As a configuration for assisting the aligned winding, a configuration in which the diameter of the winding member 15 is reduced from one end side to the other end side in the axial direction may be employed. In this case, a part of the tension of the wire 9 is small from the side where the diameter of the winding member 15 is large in the portion of the wire 9 being wound around the winding member 15 (or the portion already wound). It is converted into a force that urges to the side. As a result, the aligned winding in which the wire 9 is sequentially wound from the small diameter side to the large diameter side of the winding member 15 is suitably performed.

  The friction mechanism 13 includes a plurality of friction type torque limiters 25, for example. The torque limiter 25 is generally used as a device (rotation transmission device with a safety function) that transmits rotation until the input torque exceeds a threshold value, and interrupts transmission of rotation when the torque exceeds the threshold value. In this embodiment, it is not used as such a rotation transmission device.

  The torque limiter 25 includes, for example, an inner ring 27 and an outer part 29 that rotatably accommodates the inner ring 27. The outer component 29 includes, for example, a cylindrical member and a spring interposed between the cylindrical member and the inner ring 27, although not particularly illustrated. The spring is non-rotatable with respect to the cylindrical member, and tightens the inner ring 27. A lubricant is interposed between the spring and the inner ring 27.

  Therefore, when a moment for rotating the inner ring 27 with respect to the outer part 29 is input to the torque limiter 25, the moment is converted into a moment conversion of the maximum frictional force between the inner ring 27 and the outer part 29 (more specifically, a spring). When the value does not exceed the value, the inner ring 27 does not rotate with respect to the outer part 29. When the value exceeds the value, the inner ring 27 rotates with respect to the outer part 29 while receiving a resistance moment due to the kinetic frictional force.

  The torque limiter 25 is held on the base 23 by fixing the outer part 29 to the base 23. The inner ring 27 is connected to the output shaft 19 a of the clutch 19. Therefore, the torque limiter 25 functions as a device that generates a frictional force against the rotation of the output shaft 19 a of the clutch 19.

  The output shaft 19a of the clutch 19 and the plurality of torque limiters 25 are connected via an appropriate transmission mechanism (gear mechanism 31), whereby the friction mechanism 13 can be shared by the two displacement suppression units 5. In addition, an arbitrary number of torque limiters 25 can be used.

  Specifically, for example, the gear mechanism 31 has a gear 33 that is coaxially fixed to the inner ring 27 of each torque limiter 25. The plurality of torque limiters 25 are arranged so that the plurality of gears 33 mesh with each other. For example, the plurality of torque limiters 25 are linearly or zigzag arranged in the x direction so that the plurality of gears 33 are sequentially engaged. The inner ring 27 (two on both sides in the x direction in FIG. 2) of any of the plurality of torque limiters 25 is directly connected to the two clutches 19.

  In the example of FIG. 2, the two torque limiters 25 directly connected to the two clutches 19 have the same number of rotation directions because an odd number of torque limiters 25 (gears 33) are interposed therebetween. It is. However, since the even number of torque limiters 25 are interposed, these rotational directions may be reversed.

  The gear 33 and the plurality of torque limiters 25 are supported by the base 23. For example, the base 23 has a pair of plate-like members 23a, and is configured to hold the torque limiter 25 and the gear 33 therebetween. One of the pair of plate-like members 23a is formed with a plurality of mounting holes for rotatably supporting the rotation shaft of the gear 33 (some of which also serve as the output shaft 19a of the clutch 19). On the other side of the pair of plate-like members 23a, a plurality of holding portions for holding the outer part 29 (for example, non-circular holes into which the outer part 29 is non-rotatably fitted) are formed.

  After the number of torque limiters 25 is determined, the base body 23 (the pair of plate-like members 23a) may be manufactured to have a configuration corresponding to the number, or the number of torque limiters 25 may be changed as appropriate. It may be made so that the torque limiter 25 can be attached and detached. In the latter case, only the torque limiter 25 may be detachable, or the gear 33 may be detachable together with the torque limiter 25.

  A configuration in which the number of torque limiters 25 can be changed by attaching and detaching can be realized, for example, by the same configuration as in FIG. For example, by partially disassembling the base body 23 (with a pair of plate-like members 23 a being separated from each other) and attaching and detaching the gear 33 and the torque limiter 25, the number of the torque limiter 25 and the gear 33 is equal to that of the gear 33. It can be changed within the range of the number of mounting holes for supporting the rotating shaft and the holding portions for holding the outer part 29.

  In this case, a mounting hole and a holding portion for attaching and detaching the torque limiter 25 and the gear 33 which are arranged outside the gear 33 between the two clutches 19 (connected in parallel to the connection between the two clutches 19). Is provided, the number of torque limiters 25 and gears 33 can be changed without changing the mounting position of the displacement suppression unit 5, which is preferable.

  In addition, a member that supports the rotation shaft of the gear 33 is arranged in the holding portion that holds the torque limiter 25 of the plate-like member 23a, and only the number of torque limiters 25 is changed without changing the number of gears 33. It may be. Also in this case, it is not necessary to change the mounting position of the displacement suppression unit 5.

  FIGS. 3A and 3B are diagrams for explaining the operation of the displacement suppression device 3. For each of the two displacement suppression units 5, the winding member 15, the spring 18, the clutch 19, and the inner ring 27 are illustrated. (Friction mechanism 13) is shown schematically.

  In FIG. 3, the clutch 19 is illustrated with a structure in which a shear key is engaged in order to facilitate understanding of the operation. Specifically, it is as follows.

  The clutch 19 includes an input-side rotating member 35 to which the rotation of the winding member 15 is input, an output-side rotating member 37 to which the rotation of the input-side rotating member 35 is transmitted or blocked, and an input-side rotating member 35. And an output side rotating member 37. The output side rotation member 37 is fixed to the inner ring 27.

  The interposition member 39 is configured to be able to enter and leave the outer peripheral surface of the input side rotation member 35 and is biased to the outside of the input side rotation member 35 by a spring (not shown). The interposition member 39 is formed with a large inclination with respect to the circumferential direction on one side in the circumferential direction of the input side rotation member 35 and with a small inclination with respect to the circumferential direction on the other side. The output-side rotating member 37 is formed with a plurality of shear keys 37b that can be engaged with the plurality of interposed members 39 in the circumferential direction.

  Therefore, for example, as indicated by the arrow y3 in FIG. 3A, when the input side rotation member 35 rotates to one side, the interposition member 39 engages with the shear key 37b, and the input side rotation member 35 rotates. It is transmitted to the output side rotation member 37. On the other hand, as indicated by an arrow y19 in FIG. 3B, when the input side rotation member 35 rotates to the other side, the force acting between the interposition member 39 and the shear key 37b causes the interposition member 39 to move to the input side rotation member. The force is pushed into the force 35 and the clutch 19 is idled.

  FIG. 3A shows a case where the seismic isolation object 103 moves to the positive side in the x direction (see FIG. 1B). First, the operation on the first displacement suppression unit 5A side in this case will be described.

  When the seismic isolation object 103 moves to the positive side in the x direction, in the first displacement suppression unit 5A, as shown by the arrow y1, the wire 9 is pulled out. Rotate in the direction indicated by arrow y2. At this time, the spring 18 is wound by the rotation of the winding member 15.

  The rotation of the winding member 15 is input to the input side rotating member 35 of the clutch 19, and the input side rotating member 35 rotates in the direction indicated by the arrow y3. This rotation direction is a direction in which rotation is transmitted from the input side rotation member 35 to the output side rotation member 37, and the output side rotation member 37 rotates in the direction indicated by the arrow y4.

  The rotation of the output side rotation member 37 is input to the inner ring 27 of the friction mechanism 13, and the inner ring 27 rotates in the direction indicated by the arrow y5. At this time, the inner ring 27 receives frictional resistance from the outer part 29.

  As described above, in the first displacement suppression unit 5A, the wire 9 is pulled out while receiving frictional resistance. More specifically, the wire 9 is not pulled out (the winding member 15 or the like does not rotate) until the force for pulling out the wire 9 exceeds the maximum frictional force (maximum static frictional force) generated in the friction mechanism 13. When the force for pulling out the wire 9 exceeds the maximum frictional force generated in the friction mechanism 13, the wire 9 is pulled out (the winding member 15 and the like rotate). At this time, the wire 9 is subjected to the kinetic frictional force generated in the friction mechanism 13. As resistance.

  On the other hand, in the second displacement suppression unit 5B, when the seismic isolation object 103 moves to the positive side in the x direction, the winding member 15 is rotated by the restoring force of the spring 18, as indicated by arrows y7 and y8, and the wire 9 is wound around the winding member 15.

  The rotation of the winding member 15 is input to the input side rotation member 35 of the clutch 19, and the input side rotation member 35 rotates in the direction indicated by the arrow y9. This rotation direction is a direction in which rotation is not transmitted from the input side rotation member 35 to the output side rotation member 37 (is idle).

  As described above, the inner ring 27 of the friction mechanism 13 is rotated in the direction indicated by the arrow y5 by the rotation of the first displacement suppression unit 5A, and therefore the clutch connected to the inner ring 27 in the second displacement suppression unit 5B. The output side rotation member 37 of 19 rotates in the direction shown by arrow y6. This rotation direction is a direction in which rotation is not transmitted from the output side rotation member 37 to the input side rotation member 35 (is idle).

  As described above, in the second displacement suppression unit 5B, the wire 9 is wound by the restoring force of the spring 15. At this time, since the clutch 19 idles, the friction mechanism 13 does not hinder the winding of the wire 9. From another viewpoint, the friction mechanism 13 is in a rest state with respect to the second displacement suppression unit 5B.

  FIG. 3B shows a case where the seismic isolation object 103 moves to the opposite side (the negative side in the x direction) from the case of FIG. The operation of the displacement suppression device 3 in this case is the same as that in the case of FIG. 3A except that the operation on the first displacement suppression unit 5A side and the operation on the second displacement suppression unit 5B side are reversed. The operation is the same.

  Specifically, in the second displacement suppression unit 5B, the wire 9 is pulled out (arrow y11). This drawing causes rotation of the winding member 15 (arrow y12), rotation of the input side rotation member 35 (arrow y13), rotation of the output side rotation member 37 (arrow y14), and rotation of the inner ring 27 (arrow y15). .

  On the other hand, in the first displacement suppression unit 5A, the wire 9 is wound up by the restoring force of the spring 18 (arrow y17). The rotation of the winding member 15 at this time (arrow y18) causes the rotation of the input side rotation member 35 (arrow y19). However, both the rotation of the input side rotation member 35 and the rotation of the output side rotation member 37 due to the rotation of the inner ring 27 (arrow y16) are directions in which the clutch 19 is idled.

  As described above, the displacement suppression device 3 of this embodiment is a displacement suppression device that suppresses the displacement of the seismic isolation object 103 with respect to the support structure 101, and includes two sets of displacement suppression units 5 and two sets of displacement suppression. And a friction mechanism 13 shared by the unit 5. Each of the two sets of displacement suppression units 5 is rotatably supported by the base 23, the base 23 fixed to the support structure 101, the flexible wire 9 whose one end is fixed to the seismic isolation object 103, and the base 23. A winding member 15 capable of winding the wire 9 from the other end side, a spring portion 17 for urging the winding member 15 in the direction in which the wire 9 is wound, and a direction in which the wire 9 of the winding member 15 is pulled out. And a one-way clutch 19 for transmitting the rotation of the motor. The friction mechanism 13 is transmitted with the rotation of the winding member 15 in the direction in which the wire 9 is pulled out by the clutch 19 of the two sets of displacement suppression units 5, and the inner ring 27 is rotatable, and the inner ring 27 is a damping force that resists the rotation. And an outer part 29 for imparting.

  Therefore, as described with reference to FIG. 3, the displacement of the seismic isolation object 103 in two directions (for example, the positive side and the negative side in the x direction) is suppressed by the frictional resistance generated by the friction mechanism 13. Furthermore, in this embodiment, the friction mechanism 13 is efficiently used, and downsizing and cost reduction are expected. Specific examples of efficient use are as follows.

  Consider providing two displacement suppression devices of Patent Document 1 to suppress both positive and negative displacements in the x direction. From another viewpoint, in the displacement suppression device 3 of the embodiment, the friction mechanism 13 is not shared between the two displacement suppression units 5, and two friction mechanisms 13 are provided corresponding to the two displacement suppression units 5. Think if you are.

  In this case, when the seismic isolation object 103 moves to either the positive side or the negative side in the x direction, on one displacement suppression unit 5 side, the operation of pulling out the wire 9 is performed, and the friction mechanism 13 is operated. On the other displacement suppression unit 5 side, the operation of winding the wire 9 is performed, and the friction mechanism 13 is in a resting state. That is, one of the two friction mechanisms 13 is always in a resting state. Therefore, the operation of the friction mechanism 13 is inefficient.

  However, in this embodiment, the friction mechanism 13 always operates, and the friction mechanism 13 is used efficiently. In addition, since the friction mechanism 13 is efficiently used as described above, and the number of the friction mechanisms 13 can be reduced, the displacement suppression device 3 can be expected to be reduced in size and cost. The downsizing of the displacement suppression device 3 can reduce the mounting space of the displacement suppression device 3 in the seismic isolation system, so that the application of the displacement suppression device 3 to the seismic isolation system is facilitated.

  Unlike the present embodiment, it is conceivable that the friction mechanism is operated with respect to the movement of both the positive side and the negative side in the x direction with one set of the winding member 15 and the wire 9. For example, the longitudinal center of the wire 9 is fixed to the winding member 15, one end side of the wire 9 is pulled out to one side in the x direction and fixed to the seismic isolation object 103, and the other end side of the wire 9 is fixed to the winding member 15. Pull out to the other side in the x direction and fix to the seismic isolation object 103. Further, the winding member 15 is directly fixed to the inner ring 27 of the friction mechanism 13 without providing the spring portion 17 and the clutch 19. In this way, when the seismic isolation object 103 moves in any of the x directions, one end side of the wire 9 is pulled out, and the other end side is wound up by the rotation of the winding member 15 accompanying the drawing, Further, a frictional force is always applied to the winding member 15.

  However, in this case, for example, if the drawing amount of the wire 9 and the winding amount of the wire 9 are not the same, the wire 9 may be slackened, or conversely, excessive tension may be applied to the wire 9. is there. That is, inconveniences such as the amount of wire 9 drawn out and the amount of wire 9 wound up must be the same.

  On the other hand, in this embodiment, the drawing amount of the wire 9 in one displacement suppression unit 5 and the winding amount of the wire 9 in the other displacement suppression unit 5 may not be the same. As a result, for example, between the two wires 9, the end attachment position, the path from the winding member 15 to the attachment position, and the like can be made different from each other. Further, for example, the extending direction of the two wires 9 can be not only the opposite sides of the same direction (positive and negative in the x direction) but also the directions intersecting each other. Further, for example, even if the seismic isolation object 103 moves in a direction (y direction or z direction) intersecting the direction in which the wire 9 extends, the displacement can be suppressed. Thus, in this embodiment, the use of the two displacement suppression units 5 improves the degree of freedom in design and the applicability of the displacement suppression device.

  In the present embodiment, the friction mechanism 13 includes a plurality of inner rings 27 and outer parts 29 (torque limiters 25), and the winding member 15 transmitted from the one-way clutch 19 of the two sets of displacement suppression units 5 is used. It further has a transmission mechanism (gear mechanism 31) that transmits the rotation in the direction of pulling out the wire 9 to the plurality of inner rings 27.

  Therefore, it is easy to adjust the magnitude of the frictional resistance generated by the friction mechanism 13 by changing the number of torque limiters 25. Further, since the transmission mechanism is the gear mechanism 31, it is expected that the transmission mechanism is reduced in size and response.

  In the present embodiment, each of the two sets of displacement suppression units 5 further includes an alignment mechanism 21 that aligns and winds the wire 9 around the winding member 15.

  As a result, the variation in the magnitude of the frictional resistance related to the displacement suppression of the seismic isolation object 103 can be reduced. That is, in the case where the wire 9 is randomly wound around the winding member 15, the tension applied to the wire 9 and the frictional resistance against the tension may vary, each time the winding method is wound. Such a fear is eliminated.

  Moreover, in this embodiment, the displacement suppression system 1 contacts the wire 9 between the displacement suppression apparatus 3 as described above, the winding member 15 and the seismic isolation object 103 and changes the direction of the wire 9. And a pulley 11 to be moved.

  Therefore, for example, the direction in which the wire 9 extends from the winding member 15 can be different from the direction in which the wire 9 suppresses displacement. Further, for example, while reducing the range in which the wire 9 is routed, the amount of the wire 9 withdrawn when the seismic isolation object 103 is at the reference position (the wire 9 is wound from the reference position). (Necessary when moving in a certain direction) can be secured sufficiently. That is, the degree of freedom of attachment and the like is high.

  In particular, in the present embodiment, the two sets of displacement suppression units 5 are arranged so that the directions in which the wire 9 is pulled out from the winding member 15 in plan view are opposite to each other (positive side and negative side in the x direction), Since the two pulleys 11 are provided so that the wire 9 of each of the two sets of the displacement suppression units 5 is folded back toward the winding member 15, the displacement suppression system 1 is suitably downsized.

<Second Embodiment>
FIG. 4 is a schematic diagram illustrating a configuration of a displacement suppressing device according to the second embodiment. In addition, about the structure which is the same as that of 1st Embodiment, or similar, the code | symbol same as 1st Embodiment is attached | subjected.

  In the second embodiment, two displacement suppression units 5 are arranged coaxially. The output shafts 19a of the two displacement suppression units 5 are directly connected to the same torque limiter 225 (inner ring 227). The inner ring 227 and the outer part 229 are the same as the inner ring 27 and the outer part 29 of the first embodiment except that the output shaft 19a can be connected to both ends in the axial direction.

  Thus, the two displacement suppression units 5 may be arranged coaxially, and the transmission mechanism (gear mechanism 31) may be omitted. Also in the second embodiment, another torque limiter 25 may be connected to the torque limiter 225 (displacement suppressing unit 5) via a transmission mechanism.

  In the above embodiment, the support structure 101 is an example of a reference object, the seismic isolation object 103 is an example of an object, the friction mechanism 13 is an example of a damping mechanism, and the wire 9 is a long member. The spring portion 17 is an example of an urging mechanism, the clutch 19 is an example of a one-way clutch, the inner ring 27 is an example of a rotating member, the outer part 29 is an example of a fixed member, and a gear mechanism. 31 is an example of a transmission mechanism, and the base 23 is an example of a base and a support mechanism.

  The present invention is not limited to the above embodiment, and may be implemented in various aspects.

  The object to which the present invention is applied is not limited to the seismic isolation system. In other words, the reference object and the object whose displacement is suppressed with respect to the reference object are not limited to the support structure and the seismic isolation object. For example, as in Patent Document 1, the present invention is used for suppressing displacement of an installation placed on the floor or the ground without using a seismic isolation bearing, or used for suppressing displacement between structural members. Or you may. Further, the direction in which the displacement is suppressed by the displacement suppression device is not limited to the horizontal direction, and may be a vertical direction or a direction including a component in the vertical direction.

  In the case where the present invention is applied to a seismic isolation system, in the embodiment, the base is fixed to the support structure, and the end of the wire (long member) is fixed to the seismic isolation object. In addition, the base body may be fixed to the seismic isolation object, and the end of the wire may be fixed to the support structure.

  The long member is not limited to a wire. For example, the long member may be a flat member made of metal fiber or resin fiber as disclosed in Patent Document 1, or may be a rubber belt or a chain. In the case of a lightweight seismic isolation object, it is also possible to use a high-strength Tegus as a long member.

  The long members of the two displacement suppression devices may be connected to each other at the leading ends drawn from the winding member. In other words, the long member is shared by the two displacement suppression devices, and the reference object or the object may be fixed to an appropriate part thereof.

  Long members (not limited to flat ones, including wires, etc.), as disclosed in Patent Document 1, are arranged in a single row in the axial direction of the winding member and in multiple layers (or one layer) in the radial direction. It may be wound around. In this case, the length in the axial direction of the body portion around which the long member is wound out of the winding member is, for example, about the same as or slightly larger than the width (diameter) of the long member. Further, in the case where the long member is wound in two or more rows, in the embodiment, it has been described that the aligned winding is preferable, but random winding may be used.

  The biasing mechanism that biases the winding member in the direction of winding the long member is not limited to one including a spring (spring). For example, a counterweight may be used. Further, for example, the pulling force of the long member in the other displacement suppression unit may be used for winding the long member in one displacement suppression unit.

  The damping mechanism is not limited to the friction mechanism, and may be any mechanism that can impart a damping force against the rotation to the rotating member (inner ring 27). Here, the damping force is not limited to a force proportional to the speed, and is not limited to a vibration damping force, and is a force that suppresses displacement accompanied by dissipation of kinetic energy. For example, the damping mechanism may be configured by a magnet type torque limiter that uses magnetic force or electromagnetic force, or may be one in which a rotating member is disposed in a viscous fluid and viscous resistance is used.

  As described in the second embodiment, the transmission mechanism (gear mechanism 31) is not essential between the one-way clutch and the damping mechanism. Moreover, this transmission mechanism is not limited to a gear mechanism, For example, the mechanism which consists of a gearwheel and a chain may be sufficient. Further, a mechanism that converts rotational motion into translational motion (for example, a link mechanism or a ball screw mechanism) may be used as the transmission mechanism, and a damping mechanism that attenuates translational motion may be used.

  The pulley may not be provided. Further, the pulley is not limited to the one arranged so as to fold the long member, and the direction of the long member is changed to a direction intersecting (for example, orthogonal to) the direction from the winding member to the pulley. It may be a thing. In addition, in this application, a pulley shall contain not only the thing of the shape where the flange was provided in the both ends of the cylindrical part but the gear for chains and a timing belt.

  As mentioned in the description of the function and effect of the embodiment, the pulling direction (displacement suppressing direction) of the long members of the two displacement suppressing units is opposite to each other in the plan view (positive side and negative side in the x direction). There is no need, and the directions may intersect with each other in plan view. In the present application, when the long member is pulled out in directions opposite to each other in a plan view, the two long members may intersect at a relatively small angle (for example, less than 20 °) in the plan view. It may be. If the long member is aligned and wound with respect to the winding member, the inclination of the long member always occurs according to the width (y direction) of the aligned winding, and it is reversed for the convenience of mounting the displacement suppression system. Because it can be difficult.

  In the embodiment, the rotation direction is the same between the winding member and the input side rotation member (35) of the clutch. For example, in FIG. 3A, the directions of the arrow y2 and the arrow y3 are the same. However, the rotational directions of these may be reversed, for example, by interposing a gear between them. Similarly, the rotation direction of the clutch may be reversed by interposing a gear between the output side rotation member (37) of the clutch and the rotation member (inner ring 27) closest thereto.

  The arrangement of the gears and the like do not have to be performed in the same manner between the two displacement suppression units, and may be performed only on one side. That is, the maintenance or reverse rotation of the rotation direction from the winding member to the rotating member (inner ring 27) may be different between the two displacement suppression units.

  Between the two displacement suppression units, the rotation direction of the same member may be the same or reversed as appropriate. For example, as described above, in the embodiment, the two winding members have the same rotation direction (the arrow y8 in FIG. 3A and the arrow y18 in FIG. 3B) when winding the wire ( The opposite is true from the point of view of the same period, but it may be reversed.

  Further, for example, in the embodiment, an odd number of gears (33) are interposed between the two output side rotation members (37), and the rotation directions thereof are the same. For example, in FIG. 3A, the directions of the arrows y4 and y6 are the same. However, these rotational directions may be reversed, for example, because an even number of gears are interposed between the two output-side rotating members.

  In the embodiment, the rotation direction of the rotating member (inner ring 27) when the long member is pulled out in the two displacement suppression units is the same. That is, the arrow y5 in FIG. 3A and the arrow y15 in FIG. 3B are the same. However, these may be in the opposite direction. In addition, the method of making it a reverse direction may be the method of interposing a gear suitably as mentioned above, for example, and in the structure of embodiment, rotation of two winding members when a long member is pulled out The direction (arrow y2 in FIG. 3A and arrow y12 in FIG. 3B) may be opposite to each other.

  In the embodiment in which a force for pulling out the long member may be applied to the two displacement suppression units at the same time, the two displacement suppression units are avoided from the viewpoint of avoiding applying an excessive load to the displacement suppression device. The rotation direction of the rotating member (inner ring 27) when the long member is pulled out is preferably the same as in the embodiment.

  In the embodiment, in the displacement suppression unit that winds up the long member, the rotation direction of the input side rotation member and the rotation direction of the output side rotation member are opposite to each other so as to cause the clutch to idle. For example, the arrow y9 and the arrow y6 in FIG. However, these may be in the same direction. In other words, the rotation direction of the output-side rotation member may be the reverse direction (the direction in which no rotation occurs) to the embodiment.

  For example, the restoring force of the biasing mechanism (spring portion 17) (the rotational speed of the input-side rotating member) with respect to the assumed speed of the object (the rotational speed of the output-side rotating member caused by the rotation from the damping mechanism). If it is sufficiently large, even if the output side rotation member rotates in the opposite direction to the embodiment, the clutch always runs idle. Further, for example, even if the rotational speed of the output-side rotating member is temporarily higher than the rotational speed of the input-side rotating member, the rotational speed of the output-side rotating member is Unless it is extremely fast with respect to the increase rate of the amount to be done, the rotation of the output side rotation member contributes to the winding of the long member by rotating the input side rotation member in cooperation with the urging mechanism. Only.

  DESCRIPTION OF SYMBOLS 1 ... Displacement suppression apparatus, 5A ... 1st displacement suppression unit, 5B ... 2nd displacement suppression unit, 13 ... Friction mechanism (damping mechanism), 9 ... Wire (long member), 15 ... Winding member, 17 ... Spring part (Biasing mechanism), 19 ... clutch (one-way clutch), 23 ... base, 27 ... inner ring (rotating member), 29 ... outer member (fixing member), 101 ... support structure (reference object), 103 ... seismic isolation target Object (object).

Claims (7)

A displacement suppression device that suppresses displacement of an object relative to a reference object,
Two sets of displacement suppression units;
A damping mechanism shared by the two sets of displacement suppression units;
A base that is fixed to one of the reference object and the object and is shared by the two sets of displacement suppression units;
Have
Each of the two sets of displacement suppression units is
A flexible long member whose one end is fixed to the other of the reference object and the object;
A winding member supported rotatably on the base body and capable of winding the long member from the other end side;
An urging mechanism that urges the winding member in a direction of winding the long member;
A one-way clutch that transmits rotation in a direction of pulling out the long member of the winding member;
The damping mechanism is
A rotating member that is rotatable by being transmitted by the one-way clutch of the two sets of displacement suppressing units in a direction in which the winding member is pulled out in the direction of pulling out the long member;
A fixing member that applies a damping force against the rotation to the rotating member. A displacement suppression device that suppresses displacement of an object relative to a reference object,
Two sets of displacement suppression units;
A damping mechanism shared by the two sets of displacement suppression units;
A base fixed to one of the reference object and the object;
Have
Each of the two sets of displacement suppression units is
A flexible long member whose one end is fixed to the other of the reference object and the object;
A winding member supported rotatably on the base body and capable of winding the long member from the other end side;
An urging mechanism that urges the winding member in a direction of winding the long member;
A one-way clutch that transmits rotation in a direction of pulling out the long member of the winding member;
The damping mechanism is
A rotating member that is rotatable by being transmitted by the one-way clutch of the two sets of displacement suppressing units in a direction in which the winding member is pulled out in the direction of pulling out the long member ;
A plurality a fixed member, the combination of which imparts a damping force against the rotation to the rotary member, and,
The transmission mechanism further includes a transmission mechanism that transmits the rotation of the winding member transmitted from the one-way clutch of the two sets of displacement suppression units in the direction of pulling out the long member to the plurality of rotating members.
Strange position suppression device. The displacement suppressing device according to claim 2, wherein the transmission mechanism is a gear mechanism. The damping mechanism is
A transmission mechanism capable of attaching a plurality of rotating members and transmitting rotation of the two sets of displacement suppression units in a direction of pulling out the long member of the winding member from the one-way clutch to the plurality of rotating members. The displacement suppression device according to claim 1, further comprising a support mechanism to which the lens can be attached. The rotation direction of the rotating member when the elongate member is pulled out is the same between the two sets of displacement suppression units.
The displacement suppression apparatus of any one of Claims 1-4. The displacement suppression device according to any one of claims 1 to 5,
A pulley that contacts the long member between the winding member and the other of the reference object and the object to change the direction of the long member;
I have a,
The object is capable of reciprocating in a predetermined direction with respect to the reference object,
When the object moves to either side of the predetermined direction with respect to the reference object, the long member is pulled out from the winding member in one of the two sets of displacement suppression units, and the two sets In the other of the displacement suppression units, the long member is wound around the winding member, and the amount of pulling out the long member and the winding amount of the long member at this time are different from each other. . The two sets of displacement suppression units are arranged so that the directions in which the long member is pulled out from the winding member in plan view are opposite to each other,
The displacement suppression system according to claim 6, wherein two pulleys are provided so as to fold back the long member of each of the two sets of displacement suppression units toward the winding member.

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