JP3346996B2 - Seismic isolation stand - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation free standing shelf in which stored articles on a shelf do not drop even if an installed floor vibrates due to an earthquake or the like.

[0002]

2. Description of the Related Art FIGS. 12 and 13 show examples of a conventional so-called single-post type shelf device. 12 and 13, the shelf device on which articles and the like are placed is mainly a base 53, a support 5
6. It is composed of members such as shelf supports 55, 55, and a shelf board 57. The base 53 is a member that protrudes forward and rearward as shown in FIG. A plurality of such bases 53 are arranged at regular intervals in the frontage direction. At the center of the portion of each base 53 projecting forward and backward, a projection (not shown) projecting upward is provided, and a column 56 is attached to this projection. The strut 56 has a rectangular cylindrical shape and has a base 53 inside.
Has a hole one size larger than that of the projection.
For this reason, the columns 56 are attached to the respective bases 53 by inserting the holes of the columns 56 into the outer surfaces of the protrusions of the base 53 and fixing them with fastening members (not shown). The base 53 and the support 56 constitute a foot of the shelf device. A plurality of legs of the shelf device are arranged.

A plurality of holes 56a are provided at equal intervals in the vertical direction on the front side and the back side of the column in FIG. A shelf is attached to a specific hole 56a among a plurality of holes 56a provided in the column 56. The shelves are a pair of shelf supports 55, 55 and a shelf support 5
And a shelf plate 57 supported by support portions 55a, 55a bent in directions facing each other. As shown in FIG.
It is attached by hooking hook-shaped projections 55b and 55c provided on the back surface of 55 to holes 55a provided in the support 56. In addition, the shelves can be easily removed and assembled from the columns 56, and the number of shelves to be assembled can be changed according to the application.
As described above, a plurality of shelves including the shelf receivers 55 and 55 and the shelf plate 57 are attached to the framework of the shelf device, thereby forming a complete shelf.

[0004] The shelf itself can be used as a complete shelf device by itself. In addition, in order to cope with the vibration of the installed floor caused by an earthquake or the like, the base 5 of each shelf is required.
3 can be fixed to the installation floor with anchor bolts or the like and stabilized.

[0005]

In the above-mentioned shelf device,
The structure in which the base 53 is fixed to the installation floor with an anchor bolt or the like is a structure for preventing the shelf device itself from falling down, and is not a structure for reducing the swing of the shelf device. In particular, in the structure in which the base 53 is fixed to the floor with the anchor bolts, when the installation floor vibrates, the shelf device itself does not fall down, but the base 53 swings around the fulcrum. This swing is more intense in the upper part of the shelf. For example, in the case of a shelf having a large height, the articles stored in the upper shelf cannot be avoided from falling. Further, it was thought that such a shelf device would inevitably drop some articles in the event of an earthquake.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a seismic isolated self-supporting shelf which eliminates shaking and overturning caused by an earthquake or the like and drops of stored articles. Aim.

[0007]

According to the first aspect of the present invention,
A seismic isolation freestanding shelf having a shelf mounted on an installation floor, and horizontal movable means provided between the shelf and the installation floor and provided to the shelf and capable of moving the shelf on the installation floor. Is installed between the shelf and the installation floor, and a bar is installed on the floor during normal times.
Interfere up the movement to lock the shelf member is inserted into, the obex from installation floor when the vibration is sensed by the seismic device
A lock device that is detached and unlocked to make the shelf movable on the installed floor in a seismic isolation state, and a shelf provided on the installed floor,
And a movement limiting means for limiting the movement of the body, movement restrictions hands
The step is provided on the installation floor on a concentric circle centered on the above-mentioned bar.
If the shelf is in the seismic isolation state,
The range of movement of the shelf is limited by hitting the inner surface of the shelf .

[0008] The invention according to claim 2 provides the invention according to claim 1.
In the light, the lock device 's bar is pointing away from the installation floor.
And normally moved against the urging force and installed
It is characterized by being inserted into the floor .

[0009] The invention according to claim 3 provides the invention according to claim 2.
In the light, the locking device is moved against the biasing force.
To lock the shelf by engaging with the bar inserted in the installation floor
When the seismic device detects an earthquake, it releases the engagement with the bar.
And a solenoid for unlocking the shelf .

[0010] The invention according to claim 4 is the invention according to claim 2.
In the light, the locking device is moved against the biasing force.
To lock the shelf by engaging with the bar inserted in the installation floor.
Lever and the swing of the shelf to swing
A weighted arm for releasing engagement with the bar .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a seismic isolation self-supporting shelf according to the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, a plurality of columns 6 are provided on the installation floor 1. At the end of each pillar 6 on the installation floor 1 side, a horizontal movable means 3 composed of two casters provided at both ends is provided.
Is provided. In addition, each strut 6 is connected to the connecting upper member 2.
5 and the connecting lower member 26 are integrally connected.
In this manner, the plurality of pillars 3 integrated by the connecting upper member 25 and the connecting lower member 26 constitute a skeleton portion of a shelf described later. In order to increase the strength of the frame of the shelf, from the upper part of the column 6 to the lower part of the adjacent column 6, and from the lower part of the column 6 to the upper part of the adjacent column 6,
Reinforcing members 8, 8 are provided so as to cross each other.

As shown in FIG. 3, holes 6a are provided at uniform intervals in the vertical direction on both front and rear surfaces of the support column 6. The positions (height positions) where the holes 6a are formed coincide between the columns 6 adjacent to each other.

Further, shelf supports 5 are attached to holes 6a provided in the columns 6, 6, respectively. As shown in FIG. 4, the shelf receiver 5 is formed of a substantially trapezoidal plate material, and the edge on the front side is oblique in the vertical direction.
A hook-shaped protruding portion 5b is provided on the rear portion of the shelf receiver 5.
And a straight protruding portion 5c. By hooking the hook-shaped protruding portion 5b on the hole 6a provided on the column 6 and inserting the straight protruding portion 5c into a different hole 6a provided on the same column 6,
A shelf receiver 5 is attached to the main body.

The shelf supports 5 are attached to the columns 6, and one of the columns 6 is located at a desired height of the columns 6 at both ends of the seismic isolation free-standing shelf. 6
As shown in FIG. 3, two shelf supports 5, 5 are attached to the same column 6 at the same height. The lower edges of the shelf supports 5, 5 attached to the same column 6 are bent in directions opposite to each other, and are provided with bent portions 5a, 5a. For this reason, between the columns 6 adjacent to each other, the bent portions 5a of the shelf receivers 5 face each other.

Further, between the columns 6 adjacent to each other, the shelf supports 5 are mounted at the same height position. Therefore, the bent portions 5a, 5a of the shelf receivers 5, 5 facing each other have the same height, and the shelf plate 7 is attached to the bent portions 5a, 5a having the same height. The shelf plate 7 has a form in which both ends are supported by the bent portions 5a, 5a of the shelf supports 5, 5. In addition, bending part 5
Since the heights a and 5a are the same, the shelf 7 is horizontal. The shelf support 5 and the shelf plate 7 are attached to both front and rear surfaces of the support column 6, and the single-post type shelf 2 is configured. Further, shelf supports 5, 5 provided on adjacent columns 6, 6,
A shelf of the shelf 2 is constituted by a shelf plate 7 and the like supported by the shelf supports 5 and 5. A plurality of shelves are provided on the seismic isolation free standing shelves, and each shelves can be freely removed,
The height can be easily changed.

In the example shown in FIG.
The book is used, and four shelf sections are provided by the five columns. The number of columns 6 and the number of sections are arbitrary.

In FIG. 5, each of the columns 6 forming the shelf 2
The horizontal movable means 3 is provided in the lower part of. The horizontal movable means 3 includes a hollow rectangular parallelepiped base 10 connected to the lower end of the column 6 in the front-rear direction in the horizontal direction, and two bases provided on the lower surface side of the base 10 and at both ends in the longitudinal direction. Casters 28, 28 are provided. A protruding portion 10a is provided on the upper surface of the base portion 10 and at the center in the longitudinal direction.
Is provided. The protruding portion 10a substantially matches the inner shape of the column 6 whose outer shape is a rectangular tube. For this reason, by inserting the protruding portion 10a of the base portion 10 into the lower inner portion of the column 6 and fixing it using a fastening member, the column 6
The horizontal movable means 3 is attached to the (shelf 2). The horizontal movable means 3 allows the shelf to stand on the installation floor 1, and can be moved in any direction on the installation floor 1 by the casters 28, 28.

The provision of the horizontally movable means 3 on the shelf 2 allows the shelf 2 to stand on the installation floor 1 and to move freely on the installation floor 1. 2 is stopped on the installation floor 1 so as not to move, and when the installation floor 1 vibrates due to an earthquake, the stationary state of the shelf 2 is released, and the vibration of the installation floor 1 is reciprocated by the shelf 2 I want to be seismically isolated by damping movement. For this reason, the horizontal movable means 3 of the shelf 2 prevents the shelf 2 from moving on the installation floor 1 during normal times (when there is no earthquake) and locks the shelf 2 at a specific position. A device 4 is provided. Hereinafter, the lock device 4 will be described.

5 and 6, a holder 11 is provided on the lower surface of the base member 10. As shown in FIG. The holder 11 is cylindrical, has a hole 11c in the center, and is provided with a flange 11a on the upper outer peripheral surface. The upper surface of the flange 11 a of the holder 11 is attached to the lower surface of the base member 10. A hole 10b is provided in advance in a portion of the lower surface of the base member 10 to which the holder 11 is attached. When the holder 11 is attached to the base member 10, the hole 10b and the hole 11c of the holder 11 communicate vertically. ing. A hole 11b is provided on the outer peripheral surface of the holder 11 so as to communicate with the hole 11c.

From the inside of the base member 10, holes 10b,
The bar 12 is inserted into the hole 11c of the holder 11. The bar 12 has a flange 12a having a diameter larger than the inner diameter of the hole 10b at the upper end. The flange 12 of this bar 12
A spring 13 is interposed between a and the lower plate of the base portion 10b, and the bar 12 is urged upward (in the direction A) by the elastic force of the spring 13. A hole 12b is provided on the outer peripheral surface of the bar 12. Furthermore, on the installation floor 1,
A hole 1a is provided at a position corresponding to the bar 12. When the bar 12 is pushed downward against the elastic force of the spring 13,
The lower end of the bar 12 is inserted into the hole 1a of the installation floor 1, and the hole 11b provided on the outer
Holes 12b communicate with each other.

The lower surface of the base 10 and the holder 1
A solenoid 14 is provided on the side adjacent to the one hole 11b. The solenoid 14 is a plunger 14 that can be retracted to the inside by energizing and energizing.
a. A ring-shaped stopper 17 is fixed to the outer periphery of the plunger 14a, and a spring 16 is interposed between the stopper 17 and the outer periphery of the portion of the solenoid 14 from which the plunger 14a protrudes. Therefore, when the solenoid 14 is not excited, the plunger 14a is pulled out by the elastic force of the spring 16, that is, toward the holder 11. When the solenoid 14 is excited with the plunger 14a pulled out, the plunger 14a
Is drawn into the solenoid 14 against the elastic force of the spring 16. The solenoid 14 that pulls out or pulls out the plunger 14a is connected to a seismic device (not shown). Therefore, in a normal case, that is, when the seismic device does not sense an earthquake, the solenoid 14 is not activated, and the plunger 14a is maintained in the pulled-out state. When the seismic device detects an earthquake due to vibration or the like, the solenoid 14 is activated by the seismic device, and the plunger 14 a is retracted against the elastic force of the spring 16.

In a normal state in which no vibration occurs due to an earthquake or the like, the plunger 14a of the solenoid 14
Is engaged. In this case, the bar 12 is pushed downward against the elastic force of the spring 13 so that the lower end thereof has a hole 1 a of the installation floor 1.
The hole 11b of the holder 11 and the hole 12b of the bar 12 are communicated. And the solenoid 14
The plunger 14a pulled out from the hole 11b is inserted into the hole 11b, and the plunger 14a is further pushed in so that the front end is engaged with the hole 12b of the bar 12.
2 and the plunger 14a are engaged. In this manner, the engagement between the bar 12 and the plunger 14a enables
The bar 12 is prevented from moving upward by the elastic force of the spring 13, and the lower end of the bar 12 is provided with a hole 1 provided in the installation floor 1.
The state inserted in a is maintained. In addition, by maintaining the state where the lower end of the bar 12 is inserted into the hole 1 a provided in the installation floor 1, the shelf 2 is locked, and is moved on the installation floor 1 by the horizontal movable means 3. And is stopped at a certain position. The locking device 4 is constituted by members such as the solenoid 14 and the bar 12 which play a role of hindering the movement of the shelf 2 by stopping the movement.

Further, when the occurrence of an earthquake is detected by the seismic device, the solenoid 14 is activated by the seismic device,
The plunger 14a is retracted. When the plunger 14a is retracted, the tip of the plunger 14a and the hole 12b of the bar 12 are disengaged. When the distal end of the lancer 14a is disengaged from the hole 12b, the bar 12 is lifted upward by the elastic force of the spring 13, and the distal end of the bar 12 is released from the hole 1a. Therefore, the shelf 2 is unlocked and can be moved on the installation floor 1, and is in a seismic isolation state in which vibration is absorbed by the reciprocating damping movement of the horizontal movable means 3. Can be prevented from falling. Thus, by providing the lock device 4 with respect to the shelf 2 that can be moved by the horizontal movable means 3, a complete seismic isolation self-standing shelf is configured.

According to the seismic isolated self-supporting shelf having the above configuration,
In a normal state in which no earthquake is detected, the lock device 4 is in a locked state, so that the operation of the horizontally movable means 3 on the installation floor 1 is prevented, and the stationary state can be maintained. Further, when an earthquake is detected, the lock device 4 is released to be in the unlocked state, and the seismic isolation free-standing shelf is in a seismic isolation state in which vibration is absorbed by the reciprocating damping motion of the horizontal movable means 3, so that it is placed on the shelf. It is possible to prevent the dropped article from falling and being damaged, and the seismic isolation freestanding shelf itself from falling down.

In the above-mentioned seismic isolation free-standing shelf, any number of lock devices 4 may be provided on the seismic isolation free-standing shelf. Of the plurality of columns 6 constituting the seismic isolation free-standing shelf, two pillars 6 located at both ends are provided. It is preferable to provide each of them.

Further, the horizontal movable means 3 includes a caster 2
8, but is not limited to this. roller,
Alternatively, a plurality of small rotating bodies that can rotate around an axis orthogonal to the above-mentioned axis are provided around a rotating body that can rotate about one axis, called an omni wheel, and can be rotated in any direction. Things and the like can be used. Furthermore, when the frictional resistance of the surface of the installation floor 1 is small, the horizontal rotating means 3 does not consist of rotating bodies such as casters, rollers, and omni wheels, and comes into contact with the installation floor 1 of the seismic isolation free standing shelf. Means such as providing a low-friction resin on a portion or applying a low-friction paint may be used.

Although the range of movement of the above-mentioned seismic isolation free-standing shelf for unlocking is not specifically defined, the same floor 1 is used.
If there are a plurality of seismic isolated shelves above, they will collide with each other when the seismic isolated shelves are performing a reciprocating damping motion in the unlocked state, and will be placed on the shelves due to the impact of the collision. The placed article may fall. For this reason, when a plurality of seismic isolated self-supporting shelves are provided on the same installation floor 1, the moving range is strictly determined by the movement restricting means so that the seismic isolated self-supporting shelves do not collide with each other. It is preferable that the seismic isolation free-standing shelf be reciprocated and damped within the seismic isolation. The movement restricting means may be a wall-shaped member provided on the installation floor 1 and hindering the operation of the casters 28 on the installation floor 1.

Further, the movement restricting means may be constituted as follows. 7 and 8, a holder 11 is provided at the center of the lower surface of the base member 10. The holder 11 is cylindrical and has a hole in the center.
Is inserted. The bar 12 has a flange 12a at an upper end, and a portion having the flange 12a protrudes above the base member 10. Also, the flange 12a
A spring 13 is interposed between the base member 10 and the base member 10.
The lower end of the bar 12 is inserted into a hole 1a provided in the installation floor 1. Such a holder 11, a bar 12,
The spring 13 and a member such as a solenoid (not shown) constitute a seismic isolation free-standing shelf lock device. The locking device is
In a normal state, the state where the lower end of the bar 12 is inserted into the inside of the hole 1a is maintained, which prevents the seismic isolation free-standing shelf from moving. When an earthquake occurs, the vibration is sensed by the seismic device and the bar 12 is pulled out of the hole 1a.
When the bar 12 is pulled out, the seismic isolation free-standing shelf becomes the installation floor 1
You can move freely on the top. Further, on the installation floor 1, a peripheral wall 70 as a movement restricting means is provided on a concentric circle centered on the bar 12 inserted into the hole 1a.
The space inside the peripheral wall 70 is the movement range of the seismic isolation freestanding shelf.

When an earthquake occurs and the bar 12 is pulled out of the hole 1a and the vibration is sensed by the seismic device as shown in FIG. 9, the seismic isolation rack device can move freely on the installation floor 1. In this state, the lower end of the bar 12 pulled out of the hole 1a and the peripheral wall 70 are vertically overlapped with each other.
The outer peripheral surface of the lower end portion of the wall contacts the wall portion 70, and further movement is hindered, and collision with an adjacent seismic isolation free standing shelf is prevented. In addition, since the peripheral wall 70 is provided on a concentric circle centered on the bar 12 inserted into the hole 1a, the peripheral wall 70 is invisible from the outside of the seismic isolation free standing shelf, and has no obstruction in use. It is.

Next, another embodiment of the lock device used for the seismic isolation free standing shelf will be described. The lock device 4 shown in FIG. 10 has a bar 12 inserted into the hole 1a of the installation floor 1, a holder 11 through which the bar 12 is inserted, and a spring 13 for urging the bar 12 with elastic force. The configurations of the holder 12, the holder 11, and the spring 13 are the same as those of the above-described embodiment. However, the lock device shown in FIG. 10 does not have a solenoid, but is provided with a mechanical seismic device 20 instead. When the vibration device 20 operates, the lock of the lock device is released. Hereinafter, the seismic device 20 will be mainly described.

In FIG. 10, a shaft 21a is provided inside the base member 10, and an arm 21 is provided on the shaft 21a.
One end is attached. A hole 10 a is provided in the lower surface of the base member 10, and a lower portion of the arm 21 projects out of the base member 10 from the hole 10 a. A weight 22 is attached to an outer end of the arm 21. The arm 21 to which the weight 22 is attached can swing about a shaft 21a in a vertical plane within the range of the hole 10a.

A shaft 23 is attached to the end of the arm 21 on the weight 22 side.
a is attached, and a lever 23 is attached to the shaft 23a. The lever 23 can also swing about a shaft 23a in a vertical plane.

A member such as the arm 21, the weight 22, the lever 23, etc., constitutes a seismic device 20. Seismic device 2
0 is stationary when no vibration is caused by an earthquake or the like, or when the magnitude of the vibration is not so large. However, when a large vibration occurs due to an earthquake or the like, the arm 21 to which the weight 22 is attached swings clockwise and counterclockwise around the shaft 21a to sense the vibration.

When the shelf 2 is locked by the seismic device 20 and the lock device 4, the bar 12 is pushed downward against the elastic force of the spring 13, and the tip of the bar 12 is placed on the floor 1. It is inserted into the provided hole 1a. When the tip of the bar 12 is inserted into the hole 1a provided on the installation floor 1, the hole 12a provided on the outer peripheral surface of the bar 12 and the hole 11b of the holder 11 communicate with each other. 23 and insert the tip of the lever 23 into the hole 12
a. Insert the tip of lever 23 into hole 12
a, the lower end of the bar 12 is kept inserted into the hole 1a of the installation floor 1 and the shelf 2 is held in place. The operation by the horizontal movable means 3 is hindered, and a locked state is set.

When the installed floor 1 vibrates due to an earthquake or the like, the vibration is transmitted to the shelf 2 and the shelf 2 also vibrates, but the arm 21 of the seismic device 20 swings due to the vibration of the shelf 2.
As the arm 21 swings, the lever 23 attached to the arm 21 also moves.
The engagement between the lever 2a and the lever 23 is released. Hole 12 for bar 12
When the lever 23 is disengaged from the lever 23, the bar 12
The lower end of the bar 12 is completely pulled out from the hole 1a of the installation floor 1 by the return force of 3, and the lock is released. Therefore, the shelf 2 is in a seismic isolation state in which vibration is absorbed by the reciprocating damping movement of the horizontal movable means 3, and it is possible to prevent the article from falling.

According to the seismic isolation stand provided with the lock device 4 and the seismic device 20 having the above-described configuration, the lock device 4 is locked in the normal state in which no earthquake is detected by the seismic device 20, and the horizontal movable means is provided. Installation floor 1 by 3
Since the above operation is hindered, the stationary state can be maintained. When an earthquake is detected by the vibration of the arm 21 of the seismic device 20, the lock device 4 is released and the lock is released. Due to the earthquake, the items placed on the shelves may fall and be damaged,
It is possible to prevent the seismic isolation free standing shelf itself from falling.

Further, since the seismic device 20 directly releases the lock of the lock device 4 without using a solenoid, it is possible to contribute to cost reduction. further,
Since the seismic device 20 is a mechanical seismic device including the arm 21, the weight 22, the lever 23, and the like, it has the advantages of a simple configuration, low cost, and easy maintenance. Of course, even with the seismic isolation stand with the above configuration,
As shown in FIGS. 7 to 9, a peripheral wall 70 serving as a movement restricting means may be provided on a concentric circle centered on a bar 12 inserted into the hole 1 a of the installation floor 1. Since the bar 12 hits the inner surface of the peripheral wall 70 at the time of seismic isolation, it is possible to eliminate the collision with the adjacent self-supporting shelf. In such a case, it is necessary to set dimensions so that the peripheral device 70 does not hit the seismic device.

In the above-mentioned seismic isolation free-standing shelf, any number of lock devices 4 and seismic sensing devices 20 may be provided on the seismic isolation free-standing shelf. It is preferable to provide each of the two columns 6 located at both ends of the columns 6.

Next, still another embodiment of the lock device used for the seismic isolation freestanding shelf will be described. In FIG. 11, a support plate 41 is attached to the lower surface of the base member 10.
3 is mounted downward. The guide body 33 has projecting guide parts 33a, 33 provided on both sides in the vertical direction.
a and both guide portions 33a, 33a on the lower side (installed floor 1 side).
Is provided with a stopper 33c provided so as to connect.

A connecting member 35 is fitted to the guide portions 33a of the guide body 33. The connecting member 35 is provided with protrusions 35 a, 35 a over the entire widthwise direction. The protrusions 35 a, 35 a are fitted inside the guides 33 a, 33 a of the guide body 33. For this reason, the connecting member 35 has the protrusions 35a, 35a
a and 33a, it is possible to move in a direction orthogonal to the installation floor 1. Although not shown, the connection member 35 is prevented from coming off from the guide member 33 so that the connection member 35 does not come off from the guide member 33.

A bar 34 is attached to the connecting member 35 at an intermediate position between the protruding portions 35a, 35a. Bar 34
It extends in a direction orthogonal to the surface of the installation floor 1, and is attached to the connecting member 35 at a portion closer to the installation floor 1 than an intermediate portion. A hole 1a is provided on the installation floor 1 at a position vertically overlapping the bar 34.

The solenoid 30 is attached to the side of the guide body 33. The solenoid 30 has a plunger 31 extending in the same direction as the bar 34, and the plunger 3
One end is connected to one end of the connecting member 35.
Therefore, by energizing the solenoid 30 and operating the plunger 31, the bar 3
4 also operates in the same direction as the plunger 31. Such a guide body 33, a bar 34, a connecting member 3
5. The lock device 40 is composed of members such as the solenoid 30.

In a state where the solenoid 30 is not excited, the plunger 31 is pulled out by its own weight or by a spring urging force (not shown), and the lower end of the bar 34 is inserted into the hole 1a of the installation floor 1. For this reason, the shelf 2 is in the locked state, the movement of the horizontal movable means 3 on the installation floor 1 is restricted, and the shelf 2 is stationary at a certain position.

When an earthquake or the like is detected by a seismic means (not shown), the solenoid 30 is activated by the seismic means, and the plunger 31 is pulled into the solenoid 30. Along with this, the bar 34 directly connected to the plunger 31 by the connecting member 35 also moves upward, and the leading end of the bar 34 comes off the hole 1a, and the lock is released.

According to the seismic isolation stand having the lock device 40 having the above-described configuration, the lock device 40 is locked in the normal state where the earthquake is not detected by the seismic device. 1 can be prevented and the stationary state can be maintained. When an earthquake is detected by the seismic device, the solenoid 30 is activated, the lock of the shelf 2 by the lock device 40 is released and the lock is released, and the seismic isolation free-standing shelf is reciprocated by the reciprocating damping motion of the horizontal movable means 3. Since the vibration is absorbed, the article placed on the shelf can be prevented from falling and being damaged, and the self-supporting stand itself can be prevented from falling down.

Of course, in the seismic isolation freestanding rack having the above structure, as shown in FIGS. 7 to 9, the peripheral wall 70, which is a movement limiting means, is concentric with the bar 12 inserted into the hole 1 a of the installation floor 1. May be provided. Since the bar 12 hits the inner surface of the peripheral wall 70 at the time of seismic isolation, it is possible to eliminate the collision with the adjacent self-supporting shelf. In such a case, the solenoid 3
It is necessary to set the dimension so that 0 does not hit the peripheral wall 70.

In the above-described seismic isolation free-standing shelf, any number of lock devices 40 may be provided on the seismic isolation free-standing shelf, as in the above-described embodiment. Of these, it is preferable to provide the two columns 6 at both ends.

The lock device shown in FIGS. 5 to 11 is a typical one, and can be arbitrarily changed in design without departing from the technical idea described in each claim. Further, the form of the shelf pair is not limited to the single-post type, and may be a so-called double-post type, or may be a shelf formed by forming a panel-boiled body without using columns. .

[0049]

According to the present invention, there is provided a seismic device for sensing vibration when an earthquake occurs, and a lock device provided between the shelf and the installation floor for normally locking the shelf to prevent its movement. If vibration is detected by the seismic device,
Since the lock by the lock device is released and the shelf can be moved on the installation floor and is in a seismic isolation state, articles can be prevented from falling off the shelf, and the seismic isolation free standing shelf itself is prevented from falling over It becomes possible. Also lock
The device has a bar that is inserted into the installation floor and locks the shelf.
The movement restricting means is installed on the installation floor on a concentric circle centered on the bar.
If the shelf is in a seismic isolation state
Hits the inner surface of the peripheral wall of the movement restriction means,
Because the movement range is limited,
Movement is prevented, and collision with the adjacent seismic isolation stand is prevented.
Is done.

[0050]

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a seismic isolation self-supporting shelf according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is an enlarged front view of a main part of the above.

FIG. 4 is an enlarged side view of a main part of the above.

FIG. 5 is a sectional view showing an embodiment of the horizontal movable means and the lock device applied to the seismic isolation self-supporting shelf;

FIG. 6 is an enlarged sectional view of a main part of the above.

FIG. 7 is an enlarged cross-sectional view showing an embodiment of the movement range restricting means applied to the seismic isolated self-supporting shelf;

FIG. 8 is an enlarged plan view showing a main part of the embodiment of the movement range limiting means applied to the seismic isolated self-supporting shelf;

FIG. 9 is a cross-sectional view showing an enlarged main portion of an embodiment of the movement range restricting means applied to the seismic isolated self-supporting shelf;

FIG. 10 is an essential part enlarged sectional view showing another embodiment of the seismic isolation self-supporting shelf according to the present invention.

FIG. 11 is an enlarged sectional view of a main part showing still another embodiment of a seismic isolation self-supporting shelf according to the present invention.

FIG. 12 is a side view showing an example of a conventional freestanding shelf.

FIG. 13 is a front view of the same.

FIG. 14 is an enlarged front view of a main part of the above.

FIG. 15 is an enlarged side view of the essential parts of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Installation floor 2 Shelf 3 Horizontal movable means 4 Locking device 20 Seismic device

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-136703 (JP, A) JP-A-9-296847 (JP, A) JP-A-2-30555 (JP, U) JP-A-60- 65051 (JP, U) Fully open 1986-66549 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47B 96/00-97/00 F16F 15/00-15/36

Claims (4)

(57) [Claims] Base with a 1. A shelf body mounted on the mounting floor, this <br/> shelf body and the mounting alcove to set vignetting, and horizontal moving means for enabling moving the rack member in the installed floor A self-sustained shelf that is installed between the shelf and the installation floor, and is usually installed with a bar.
Interfere up the movement to lock the shelf body is inserted into the attached floor,
Above when the vibration by the seismic device is sensed obex
A lock device that releases the lock from the installation floor to release the lock and move the shelf to the seismic isolation state where the shelf can be moved on the installation floor ; and a movement restriction provided on the installation floor to limit the movement of the shelf.
Means, and said movement restricting means, said bar is centered on said installation floor
This is a peripheral wall provided on a concentric circle.
When the bar comes into contact with the inner surface of the surrounding wall,
A seismic isolation free standing shelf characterized by a limited range of movement of the shelf. 2. The bar of the lock device comes off from the installation floor.
And is normally moved against the urging force.
The seismic isolation self-standing shelf according to claim 1, wherein the shelf is inserted into an installation floor . 3. The lock device is moved against an urging force.
To lock the shelf by engaging with the bar inserted in the installation floor
When the seismic device detects an earthquake, it releases the engagement with the bar.
Equipped with a solenoid that unlocks the shelf
The seismic isolation self-supporting shelf according to claim 2, characterized in that: 4. The lock device is moved against an urging force.
To lock the shelf by engaging with the bar inserted in the installation floor
Lever and swing by the vibration of the shelf
Having a weighted arm for releasing engagement with the lever
The seismic isolation free standing shelf according to claim 2, characterized in that: