JP2010133533A - Lock mechanism, and earthquake-resistant and vibration control structure and earthquake-resistant and base isolation structure using the lock mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock mechanism capable of maintaining the lock state with respect to small external force, and capable of passively releasing the lock state with respect to large external force. <P>SOLUTION: The first and second lock gears 6 and 7 are meshed, the lock gears 6 and 7 are pressed against each other by a spring 10, and the lock state preventing relative displacement to the shear direction is formed. When external force larger than the prescribed value acts in the shear direction, sliding occurs between the lock gears 6 and 7, the lock gears 6 and 7 are mutually displaced to the separation direction against energizing force of the spring 10, meshing is released, and the lock release state is formed, and a lock release maintaining mechanism 16 is provided. Further, separation mechanisms 14 and 15, and a delay return mechanism 16 may be provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lock mechanism, and an earthquake-resistant and seismic isolation structure using the lock mechanism.

For example, a damping device and a damping panel using a viscoelastic body as a damping member have been conventionally provided.
JP 2008-8342 A

  However, conventional seismic control devices and seismic control panels can exhibit effective seismic control against large external forces such as large earthquakes, but they are resistant to small external forces such as small earthquakes and wind pressure. There is a problem that the performance is not always sufficiently secured.

  The present invention can solve such a problem under such a technical background, and can maintain a firm lock state with respect to a small external force, while maintaining a strong external force. Therefore, it is an object of the present invention to provide a lock mechanism that can passively release the locked state.

The above-mentioned problem is provided with a locking member having a locking unevenness, which is attached to one of the mounting sides for relative displacement, and a locking member also having a locking unevenness, which is attached to the other.
The recesses and protrusions of both the lock members are brought into mesh with each other, and the lock members are pressed together by the biasing means to form a lock state in which relative displacement in the shear direction on the both attachment sides is prevented. And
When an external force in the shear direction of a certain magnitude or more acts on the mounting side, the external force causes a slip in the shear direction between the locking irregularities, so that the lock members are opposed to the biasing force of the biasing means. Is displaced in the direction of separation, the engagement of the locking irregularities is released, and an unlocked state in which both mounting sides are relatively displaced in the shear direction is formed, and
The present invention is solved by a lock mechanism characterized in that a lock release holding mechanism is provided to keep the released lock member in the released state and hold the unlocked state (first invention).

  In this lock mechanism, in the locked state, the concave and convex portions of both lock members are engaged with each other, and both lock members are pressed against each other by the biasing means. The relative displacement is firmly prevented, and a firm locked state can be maintained.

  On the other hand, for a large external force above a certain level, the external force causes a slip in the shearing direction between the locking irregularities, so that the locking members are displaced in the separation direction against the urging force of the urging means. In addition, since the engagement of the locking irregularities is released, the locked state can be released passively.

  In addition, since the lock release holding mechanism is provided, the separated lock member can maintain the released state and hold the unlocked state, and the relative displacement in the shear direction on both mounting sides with respect to the large external force as described above. The operation can be performed sufficiently in time.

  In the first invention, there is provided a separation mechanism that causes the lock member to disengage at a displacement amount larger than a separation displacement amount between the lock members due to slippage of the locking unevenness in a shear direction, and the unlocking holding mechanism is provided. The lock member separated by the separation mechanism may be held in the separated state (second invention).

  In this case, contact between the locking irregularities in the unlocked state can be reliably prevented, and a stable unlocked state can be maintained.

  In the first and second aspects of the invention, there is provided a delay return mechanism that delays the lock irregularities of the lock member brought into the unlocked holding state by the unlocking holding mechanism to return to the meshing state, and after the unlocking, the delay The return mechanism may be configured to return to the locked state with a delay (third invention).

  In this case, since the unlocking state can be delayed and returned to the locked state by the delay return mechanism, the relative displacement operation in the shear direction on both attachment sides against the large external force as described above is locked. After sufficient time is taken by the release and holding mechanism, it returns and returns to the locked state, and thereafter, it is possible to prevent relative displacement in the shearing direction from occurring on both mounting sides with respect to a small external force. .

According to the present invention, one lock member in any one of the first to third lock mechanisms is attached to one attachment side, and the other lock member is attached to the other attachment side. The sides are connected via a damping member,
A seismic anti-seismic structure characterized in that the mounting sides form an anti-seismic structure in a locked state by the lock mechanism, and form an anti-seismic structure when the lock by the lock mechanism is released. Included (fourth invention).

  With this seismic control structure, it keeps a strong locked state against small external forces caused by small earthquakes and wind pressures, and it is seismically actuated. The seismic member performs seismic control action, and in the unlocked state, the lock release holding mechanism works, and the seismic control action by the seismic control member can be performed sufficiently in time, realizing effective seismic control operation can do.

  In addition, when a separation mechanism is provided, it is possible to reliably prevent contact between the locking irregularities in the unlocked state, maintain a stable unlocked state, and suppress the vibration control action by the damping member. It can be made stable.

  In addition, if a delay recovery mechanism is provided, after a sufficient time-controlled vibration control operation, return to the locked state, and then maintain a strong earthquake resistance against small external forces. Can do.

Further, according to the present invention, one lock member in any one of the first to third lock mechanisms is attached to the lower structure portion side as one attachment side, and the other lock member is the other attachment side. Is attached to the side of the upper structure part, and the upper structure part is seismically isolated to the lower structure part,
A seismic isolation structure is provided in which a seismic resistance state is formed in the locked state by the lock mechanism, and a seismic isolation possible state is formed when the lock by the lock mechanism is released (fifth). invention).

  With this seismic isolation system, it keeps a strong locked state against small external forces caused by small earthquakes and wind pressures, and it is seismically actuated. The seismic action is performed, and in the unlocked state, the unlocking holding mechanism works, and the seismic isolation action can be performed sufficiently in time, and an effective seismic isolation operation can be realized.

  In addition, when a separation mechanism is provided, it is possible to reliably prevent contact between the locking irregularities in the unlocked state, maintain a stable unlocked state, and stabilize the seismic isolation operation. can do.

  In addition, if a delayed return mechanism is provided, after a sufficient seismic isolation operation has been performed in time, return to the locked state, and then maintain a strong seismic resistance against small external forces. Can do.

  Since the present invention is as described above, the locked state can be kept firm against a small external force, while the locked state can be passively released against a large external force.

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

  The embodiment shown in FIGS. 1 and 2 is a case where a lock mechanism and a seismic control structure are applied to the seismic control device 1. In the device 1, as shown in FIG. 2 (a), an upper plate 3 is disposed between two integrated lower plates 2, 2, and these plates 2, 3, 2 are arranged. The upper and lower viscoelastic bodies 4 are interposed between the lower plates 2 and 2 and the upper plate 3 when they are displaced relative to each other in the horizontal direction in the direction shown in FIG. Each of the viscoelastic bodies 4 is subjected to a vibration control action by shearing and absorbing energy.

  In the above device 1, the lock mechanism 5 is provided using the space between the upper and lower viscoelastic bodies 4, 4 with the upper plate 3 as one attachment side and the lower plates 2, 2 as the other attachment side. It has been. That is, a linear first gear 6 as a lock member is integrally attached to each surface portion of the upper plate 3 so as to extend in the left-right direction, and the first lock gear 6 has locking irregularities. The sin-tooth shaped gear teeth 6a for forming are arranged in the direction in which the first lock gear 6 is extended toward the inner surface side of the lower plate 2.

  A linear second gear 7 as a lock member is provided on the inner surface of the lower plate 2 so as to extend in the left-right direction so as to face the first lock gear 6, and the second lock gear. 7 is a direction in which the second lock gear 7 is extended with a sin-curve gear tooth 7a that can mesh with the gear teeth 6a of the first lock gear 6 to form the locking irregularities. Are lined up.

  The second lock gear 7 is provided with slide pins 8 and 8 projecting from the left and right positions on the back surface thereof, and these slide pins 8 and 8 pass through the lower plate 2, The second lock gear 7 can move toward and away from the first lock gear 6.

  In order to make the movement of the second lock gear 7 approaching and separating smoothly, a guide tube 9 is provided in the penetrating portion of the slide pin 8 so that the slide pin 8 slides inside the guide tube 9. Good. In that case, it is more preferable to apply a lubricant such as grease to the sliding portion between the guide tube 9 and the slide pin 8.

  Further, a compression coil spring 10 as an urging means is provided on the outer peripheral portion of the slide pin 8 between the second lock gear 7 and the inner surface portion of the lower plate 2.

  As a result, the second lock gear 7 is urged toward the first lock gear 6 by the restoring force of the spring 10, and the two lock gears 6 and 7 are engaged with each other to be pressed together. While the plates 2 and 2 are in a locked state in which relative displacement is prevented in the left-right direction, which is the shear direction, the upper plate 3 and the lower plates 2 and 2 have a shear direction of a certain size or more. When an external force is applied, the external force causes a slip in the shear direction between the gear teeth 6a of the first lock gear 6 and the gear teeth 7a of the second lock gear 7, and the lock gear resists the biasing force of the spring 10. 6 and 7 are displaced in the separating direction, the meshing of the gear teeth 6a and 7a is released, and an unlocked state is formed in which the upper plate 3 and the lower plates 2 and 2 are relatively displaced in the left-right direction. Has been made

  In the present embodiment, as shown in FIG. 1C, a part of the members constituting the lock mechanism is unitized, and the base plate 11 is provided with the second lock gear 7, the slide pin 8, and the spring 10. As shown in FIG. 2 (a), the unit 12 to which etc. are assembled passes through the opening 13 opened in the area between the upper and lower viscoelastic bodies 4 and 4 in the lower plate 2, and the second lock gear 7 Is engaged with the first lock gear 6, and the base plate 11 is attached to the outer surface portion of the lower plate 2, so that the lock mechanism is incorporated into the device 1.

  In the present embodiment, the separation mechanism for causing the second lock gear 7 to release a displacement larger than the separation displacement of the second lock gear 7 due to slippage in the shearing direction of the gear teeth 6a, 7a when releasing the lock. Is provided.

  The separation mechanism is constituted by a lock prevention guide 14 and an idle roller 15 as shown in FIGS. The lock prevention guide 14 is attached to the upper plate 3 adjacent to the upper side of the first lock gear 6 in a fixed state, and has a concave arcuate guide surface 14a whose center is depressed in plan view. It is provided so as to face the lower plate 2 side. The idle roller 15 is integrally attached to the upper portion of the second lock gear 7 so as to face the guide surface 14a of the lock prevention guide 14, and the first and second lock gears 6 and 7 are engaged with each other. In FIG. 4, the concave guide portion 14a of the lock prevention guide 14 is located in the depressed central portion.

  As a result, an external force in a shearing direction of a certain magnitude or more acts on the upper plate 3 and the lower plates 2 and 2, and the gear teeth 6 a and 7 a slip due to the external force, and the first and second lock gears 6. , 7 start separating operation, as shown in FIGS. 4A and 4B, the idle roller 15 and the lock prevention guide 14 are displaced relative to each other in the left-right direction, and the idle roller 15 is unlocked. The guide roller 14a moves laterally from the center position of the guide surface 14a, the idle roller 15 is pushed toward the lower plate 2, and the second lock gear 7 is linked to the biasing force of the spring 10 in that direction. As shown in FIG. 4 (c), it is pushed and moved so as to be far away from the first lock gear 6.

  The lock mechanism 5 includes a lock release holding mechanism that holds the second lock gear 7 thus separated from the first lock gear 6 by the release mechanism, and a lock release hold state by the lock release hold mechanism. There is provided a delay return mechanism that delays the second lock gear 7 and returns to the meshed state with respect to the first lock gear 6.

  These lock release holding mechanism and delay return mechanism are configured using a liquid-type return prevention one-way damper 16 using a fluid such as oil as a working fluid, and between the upper plate 3 and the lower plate 2, It is located at the center between the left and right slide pins 8, 8.

  As shown in FIGS. 1 (b) and 3 (a), the damper 16 includes a cylinder 17 and a piston 18, and the cylinder 17 is connected to the lower plate 2 side, that is, the inner surface of the base plate 11. In addition, the piston rod 19 is connected to the second lock gear 7 side. The piston 18 is provided with an opening 20 and a small hole 21 that communicate with the chambers on both sides of the piston 18, and the opening 20 is provided with a lid 22 that opens and closes it. Oil 23 as a fluid is enclosed.

  As a result, when the second lock gear 7 is separated from the first lock gear 6, the damper 16 receives a compressive force to open the lid 22 and open the internal oil 23 as shown in FIG. By moving through the portion 20, a shortening operation is performed. In this shortened state, the second lock gear 7 is subjected to a return force toward the first lock gear 6 by the biasing force of the spring 10, and the force is As shown in FIG. 3 (c), the damper 16 acts as a pulling force, but the lid 22 is closed by the pulling force, and the internal oil 23 can move only through the small hole 21, thereby extending. After the operation is blocked and the unlocked state is maintained, and as shown in FIGS. 5 (a) to 5 (c), a sufficient time-dependent vibration control operation is performed and the vibration control operation is completed, the small hole 21 is maintained. By the movement of oil 23 through Extending and extends, is adapted to return, for example, in the locked state as shown in FIG. 4 (b). The delay may be, for example, 20 to 30 minutes in various seismic control structures such as the above-described seismic control device 1 and seismic isolation structures.

  According to the lock mechanism 5 described above, in the locked state, the gear teeth 6a and 7a of the first and second lock gears 6 and 7 are brought into mesh with each other, and the lock gears 6 and 7 are pressed against each other by the spring 10. Therefore, for a small external force, the relative displacement in the shear direction of the upper and lower plates 2, 2, 3 is firmly prevented, and a firm locked state can be maintained. It can exhibit strong seismic performance against small external forces such as small earthquakes and wind pressure.

  On the other hand, for a large external force above a certain level, the external force causes a slip in the shearing direction between the gear teeth 6a and 7a, and the separation mechanisms 14 and 15 work to resist the biasing force of the spring 10. Since the first and second lock gears 6 and 7 are displaced in the direction away from each other and the meshing of the first and second lock gears 6 and 7 is released, the locked state is released passively, and the earthquake-resistant vibration control In the device 1, the viscoelastic bodies 4 can undergo shear deformation with respect to a large external force such as a large earthquake, and can exhibit seismic control performance.

  Moreover, since the lock release holding mechanism by the damper 16 is provided, the separated first and second lock gears 6 and 7 can be kept in the separated state and can be kept in the unlocked state as described above. The relative displacement operation in the shearing direction of the upper and lower plates 2, 2, 3 with respect to a large external force can be performed sufficiently and stably in combination with the separation mechanism. The viscoelastic bodies 4 can sufficiently perform the vibration control action in terms of time and perform an effective vibration control operation.

  In addition, since the delay return mechanism by the damper 16 is provided, the relative displacement operation in the shearing direction of the upper and lower plates 2, 2, 3 with respect to the large external force as described above is temporally performed by the lock release holding mechanism by the same damper 16. After being sufficiently performed, it returns and returns to the locked state, and thereafter, it is possible to prevent relative displacement in the shear direction between the upper and lower plates 2, 2, 3 with respect to a small external force, The seismic control device 1 returns to the locked state after performing a sufficient seismic control operation in terms of time, and thereafter can maintain a firm seismic state against a small external force.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, the form of the gear teeth 6a and 7a of the lock gears 6 and 7 is not limited, and trapezoidal gear teeth are employed or the gear teeth pitch is large as shown in FIGS. Alternatively, it is possible to employ small lock gears 6 and 7, and various forms may be employed depending on the magnitude and nature of the required locking force. Moreover, not only gear teeth but various forms of unevenness may be employed. Moreover, in said embodiment, although the earthquake-resistant seismic control device 1 which incorporated the lock mechanisms 5 and 5 on both sides which pinched | interposed the center upper plate 3 was shown, as shown to FIG. The lock mechanism 5 may be incorporated only on one side of the plate 3 and the viscoelastic body 1 may be configured from the other side without a viscoelastic body and a lock mechanism, and a bearing is provided. 4 may be arranged in various relations.

  In the above embodiment, the case where the lock release holding mechanism and the delay return mechanism are configured by the damper 16 and the separation mechanism is configured by the lock prevention guide 14 and the idler roller 15 is shown. You may make it comprise by the means of. Moreover, in said embodiment, although the case where a viscoelastic body was used as a damping member was shown, another damping member may be employ | adopted.

  Furthermore, the lock mechanism of the present invention is not limited to the above-described seismic control device 1 and can be applied to other various seismic control structures to form an earthquake-resistant seismic control structure. Not limited to this, as in the fifth aspect of the invention, it can be applied to a seismic isolation structure to constitute a seismic isolation system, and can be widely applied as a lock mechanism in other devices and structures.

The lock mechanism and seismic control device of an embodiment are shown, a figure (I) is a II-II line sectional view of Drawing 2 (I), and a figure (B) is a II-II line of Drawing 2 (A). An arrow sectional view and a figure (c) are side views of a unit. FIG. 1A is a side view of the same cross section, and FIG. FIG. 1A is a cross-sectional plan view showing the structures of the lock release holding mechanism and the delay return mechanism, and FIGS. 2B and 2C are cross-sectional plan views showing the operations of these mechanisms. FIG. 1A is a cross-sectional plan view showing a separation mechanism, and FIGS. 2B and 2C are cross-sectional plan views showing the operation thereof. FIGS. 1A to 1C are cross-sectional plan views showing a lock release holding state by the lock release holding mechanism. Drawing (a)-figure (c) are top views showing various forms of a lock gear, and figure (d) is a section side view showing other forms of an earthquake-proof seismic control device.

Explanation of symbols

1 ... Device (seismic control structure)
2 ... Lower plate (one mounting side)
3 ... Upper plate (the other mounting side)
4. Viscoelastic body (damping member)
5 ... Lock mechanism 6 ... First lock gear (lock member)
6a ... Gear teeth (unevenness for locking)
7. Second lock gear (lock member)
7a ... Gear teeth (unevenness for locking)
10 ... Spring (biasing means)
14 ... Lock prevention guide (separation mechanism)
15 ... idle roller (separation mechanism)
16 ... Damper (lock release holding mechanism, delayed return mechanism)

Claims (5)

A locking member with locking irregularities attached to one of the mounting sides for relative displacement, and a locking member with locking irregularities attached to the other;
The recesses and protrusions of both the lock members are brought into mesh with each other, and the lock members are pressed together by the biasing means to form a lock state in which relative displacement in the shear direction on the both attachment sides is prevented. And
When an external force in the shear direction of a certain magnitude or more acts on the mounting side, the external force causes a slip in the shear direction between the locking irregularities, so that the lock members are opposed to the biasing force of the biasing means. Is displaced in the direction of separation, the engagement of the locking irregularities is released, and an unlocked state in which both mounting sides are relatively displaced in the shear direction is formed, and
A lock mechanism comprising a lock release holding mechanism that keeps the released lock member in a released state and holds the unlocked state.   There is provided a separation mechanism that causes the lock member to disengage when the lock is released, with a displacement amount larger than the separation displacement amount between the lock members due to slippage in the shearing direction of the locking unevenness, and the unlocking holding mechanism is provided by the separation mechanism. 2. The lock mechanism according to claim 1, wherein the separated lock member is held in the separated state.   There is provided a delay return mechanism that delays the lock irregularities of the lock member brought into the unlock release holding state by the unlock release holding mechanism and returns to the meshed state, and after the lock release, the delay return mechanism delays the lock. The lock mechanism according to claim 1 or 2, wherein the lock mechanism is returned to a state. The lock mechanism according to any one of claims 1 to 3, wherein one lock member is attached to one attachment side, the other lock member is attached to the other attachment side, and the attachment sides are restricted. Connected through seismic members,
The seismic control structure is characterized in that the attachment sides form a seismic structure in the locked state by the lock mechanism and form a seismic control structure when the lock by the lock mechanism is released. 4. The lock mechanism according to claim 1, wherein one lock member is attached to a lower structure portion side as one attachment side, and the other lock member is an upper structure as the other attachment side. Is attached to the side of the part, the upper structure part is seismically isolated to the lower structure part,
A seismic isolation structure, wherein an earthquake resistant state is formed in a locked state by the lock mechanism, and a seismic isolation possible state is formed when the lock by the lock mechanism is released.

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