JP2728061B2 - Fixed shelf seismic isolation device - 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 device which can be suitably applied to a fixed shelf used in an archive or a warehouse.

[0002]

2. Description of the Related Art For example, among shelves used in archives and warehouses, those that do not need to be moved are fixed firmly in advance using a bolt or the like to a lower grounding portion on a building structure floor or the like so as not to fall down. It is customary to support. When the upper part of the shelf is close to the ceiling surface, the upper part of the shelf is further fixed to the ceiling surface, but in general, the upper part of the shelf is often an open space.

[0003]

However, in such a case, when a huge earthquake or the like occurs, the lower part of the fixed shelf vibrates in synchronization with the floor surface, whereas the upper part of the fixed shelf moves. Due to inertia, it is not possible to immediately follow the sway of the floor surface, and therefore, there is a high possibility that the fixed shelf will fall down at once in such a way that the feet are scooped while destroying bolts and the like.

An object of the present invention is to provide a seismic isolation device for fixed shelves which effectively solves such a problem.

[0005]

In order to achieve the above object, the present invention employs the following configuration.

[0006] That is, the seismic isolation device for fixed shelves according to the present invention comprises, as a basic configuration, a wheel capable of rolling on a fixed rail laid on the floor, and a direct or indirect rolling of the wheel in a limited state. A restricting mechanism for prohibiting and releasing the prohibition in the open state, a vibration sensing mechanism for moving the operating part from a steady position to an operating position by a certain level of vibration, and the restricting mechanism in conjunction with the movement of the operating part. Transmission means for switching from the restricted state to the open state .

With such a configuration, the vibration sensing mechanism is normally in the steady position and the limiting mechanism is in the limiting state, so that the fixed shelf is prohibited from moving by rolling of the wheels, and is normally placed on the floor. The fixing state is exactly the same as when fixing with bolts or the like. On the other hand, if a certain level of vibration is applied to the fixed shelf, the vibration detection mechanism detects it and the operating part moves from the steady position to the operating position, causing the restriction mechanism to shift from the restricted state to the open state. , So that the fixed shelf can be freely moved by rolling the wheels. In other words, in this state, the lower part of the fixed shelf, like the upper part, relatively moves on the rail due to inertia and stops at or near the original position, which is effective against rolls vibrating in the rail direction. In addition, the fixed shelf can be prevented from overturning.

[0008] The present invention provides, in addition to the above configuration,
The limit mechanism includes a fixed shaft, a fixed member fixedly provided on the axle of the fixed shaft the wheels selectively connected to consist of a clutch which restrains, or architectural structure floor or the like, fixed shelf to the fixed member And a mooring means for selectively engaging and restraining a part of the member. The former stops the self-propelled function by the fixed shelf itself, and the latter requires the fixing force of the fixed shelf to the outside, but the former is fixed to the floor or wall, although the fixing force is slightly lower than the latter. There is no need to provide a member, and there is an advantage that the member can be fixed at an arbitrary position on the rail. These are effective if properly used according to the purpose of use.

When the vibration sensing mechanism is disposed near the bottom of the fixed shelf, the vibration can be quickly and accurately detected at a position closest to the floor, and the operating characteristics of the seismic isolation device are effectively improved. Can be done.

An operating portion elastically biased from the steady position to the operating position in the direction of the operating position; a rotating portion engaged with the operating portion at the steady position and rotatably supported; A sensing unit for sensing the vibration and rotating the rotating unit, wherein the rotating unit is rotated by a certain vibration or more to disengage with the operating unit, and the operating unit is When the system is configured to move from the steady position to the operating position, the vibration sensing mechanism can be reliably operated even under a huge vibration, and the possibility of failure can be significantly reduced.

In the case where the return means for returning the restricting means from the operating position to the steady position is provided, the reset operation after the seismic isolation device has been operated can be easily performed, and the handling valve can be effectively improved. Can be.

As a preferred application example of the seismic isolation device, there is a case where the fixed shelf is arranged at an end of a movable shelf and the whole constitutes a mobile storage device. In such a mobile storage, the rails provided for the mobile shelves can be shared with the fixed shelves, so that the number of parts and the number of manufacturing steps can be reduced effectively.

[0013]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a fixed shelf A to which the seismic isolation device of this embodiment is applied. The fixed shelf A is mounted on a common rail R together with a plurality of moving shelves B and moves as a whole. It constitutes a storage. That is, in this type of mobile storage, the mobile shelf B can be overlapped with the adjacent mobile shelf B or fixed shelf A as necessary, or a passage can be formed between the mobile shelf B and a person, so that a proper use state can be obtained. This allows the passage to be kept to a minimum space while ensuring a high storage efficiency. And in such a mobile storage, the fixed shelf A arranged at the end is
Conventionally, a bracket bent in a hat shape was welded to the lower surface of a base, and this portion was firmly fixed to a rail with bolts or the like. In this embodiment, a seismic isolation device is applied to the fixed shelf A. Fixed shelf A at the time of vibration
To prevent falls.

[0015] More specifically, fixed shelf A is 2 to 4, the base portion 100 _1, and a main body portion 100 ₂ which is mounted above the base unit 100 _1. The base part 100 ₁ has a structure in which a long side bottom frame member 111 and a short side side bottom frame member 112 forming an inward U-shaped pair are assembled in a frame shape, and appropriate portions are reinforced by a plurality of reinforcing frame members 113. Consists of Then, it has opened the strut instrumentation Nyuana 100a forming a rectangular shape in plan view on the upper surface a plurality of locations of the base portion 100 _1. On the other hand, the main body 100 ₂ is
A tower 122 erected charged with lower end 0a, a side plate portion 102 which is erected on the short side of the base portion 100 _1, the top plate being Kanmuri設the upper end portions of the struts 122 and the side plate portion 102 123 so that shelves can be placed at appropriate positions.

In such a configuration, the present embodiment is
The fixed shelf A is provided with wheels 105 that can roll on fixed rails R laid on the floor F, and the wheels 1
A restricting mechanism 2 for selectively prohibiting or releasing the rolling state 05 and a vibration detecting mechanism 8 for capturing vibration at a position close to the floor F
And the mechanical transmission means 3 that shifts the limiting mechanism 2 from the restricted state to the open state when the vibration sensing mechanism 8 operates, and constitutes the seismic isolation device 7.

The wheel 105 is, as shown in FIGS.
An axle 15 disposed in the space inside the base portion 100 ₁
1a, 151b, these axles 151a,
51b is a bearing portion 113 fixed on the lower surface of the reinforcing frame member 113.
a is rotatably supported in the front-rear direction, and can roll on a rail R provided on a floor surface F. Axle 151
a and 151b, the latter separately supports the left and right wheels 105, while the former supports the left and right wheels 105.
Are simultaneously supported, and a sprocket 105a is fixed at the center thereof so as to be integrally rotatable.

As shown in FIGS. 4 and 8, the limiting mechanism 2 comprises a fixed shaft 21 and a clutch 22 for selectively connecting the axle 151a to the fixed shaft 21. The fixed shaft 21 includes axles 151a, 151
b, and is rigidly connected to the reinforcing frame member 113 at an appropriate position by welding or the like. The clutch 22 has a first clutch element 22a which is rotatably fitted on the outer periphery of the fixed shaft 21 so as not to be movable in the axial direction, and a second clutch element 22 which is slidably fitted on the outer periphery of the fixed shaft 21 so as not to be rotatable. And a clutch element 22b.
a, face-to-face position of 22b, together with a selectively formed meshing portions 22a _1, 22b ₁ which meshes or dissociate second clutch element 22b when allowed to and away operation to the first clutch element 22a, A rebound spring 22c is interposed between the two clutch elements 22a and 22b. Further, a sprocket 23 is fixed to the first clutch element 22a so as to be integrally rotatable. The sprocket 23 and the sprocket 105a of the axle 151a are connected via a chain 24.

The vibration sensing mechanism 8 is fixed to the base 1, and as shown in FIGS.
An operating portion 82 rotatably supported by the main body case 81; a rotating portion 83 rotatably supported by the main body case 81 and selectively engaging with the operating portion 82; And a sensing unit 84 for rotating the rotating unit 83. The main body case 81 has a U-shape with a downward cross section, and the upper plate 811 is horizontal and the side direction of the side plate 813 is a rail R.
Are arranged in accordance with the extension direction of The operating portion 82 is a strip having an arcuate tip 82 a, and has its base end pivotally supported between side plates 813 of the main body case 81 via a support shaft 823. An engaging hole 8 is provided near the center of the operating portion 82.
22 is penetrated, and the spring force of the repulsion spring 22c is applied to the engagement hole 822 from the clutch 22 of the limiting mechanism 2 via the transmission means 3 described later, and the operating portion 82 is moved from the horizontal steady position. It is elastically biased toward the vertical operating position. The rotating portion 83 is formed by cutting a channel material into an L shape when viewed from the side. The horizontal arm 83a extends horizontally in a direction opposite to the operating portion 82, and the vertical arm 83b extends vertically downward. It is arranged between the side plates 813 of the case main body 81, and rotatably pivotally supports the connecting portion between the horizontal arm 83 a and the vertical arm 83 b to the main body case 81 via the rotating shaft 831. Then, in the internal space of the main body case 81, the horizontal arm 83a moves from the horizontal posture to the upper plate 81 of the main body case 81.
The movable shelf can be rotated in the moving direction of the moving shelf until the inclined posture comes into contact with the lower surface of the moving shelf 1. Immediately below the rotating shaft 831, an engaging pin 8 is provided between the left and right vertical arms 83b.
32 is horizontally laid, and a horizontal arm 83a of the rotating portion 83 is provided.
Is in a horizontal position, the lower surface of the distal end 82a of the operating portion 82 elastically engages with the upper surface of the engagement pin 832,
The engagement is released when the horizontal arm 83a of the rotating portion 83 reaches the rotating position at which the horizontal arm 83a has a certain inclination angle. The sensing portion 84 includes a weight 84 having a flat lower surface 841a.
1 and a swing shaft 84 projecting downward from a lower surface 841a thereof.
And the swing shaft 842 is connected to the main body case 8.
Opening 812 provided in the upper plate 811
The opening 833 provided in the horizontal arm 83a is loosely fitted, and a circular engaging plate 843 having a larger diameter than the openings 812 and 833 is attached to the penetrating end. That is, the sensing unit 84
In the normal state, the swing shaft 842 is in a vertical position, and the engaging plate 843 is in contact with the lower surface of the horizontal arm 83a of the rotating portion 83, but the weight 841 swings due to vibration. When a swinging motion is performed together with the moving shaft 842, the engagement plate 843 lifts the rotating portion 83 from the lower surface of the horizontal arm 83a and inclines the rotating portion 83.

The transmitting means 3 is for transmitting the turning operation of the operating portion 82 to the clutch 22. As shown in FIGS. 7 and 8, the upper end is connected to the engaging hole 822 of the operating portion 82. Transmission rod 31 arranged to be vertically swingable
And a vertical plate with a right triangle shape.
Cam plate 32 one end 32b of the horizontal sides coupled to the lower end of the first transmission rod 31 with 2a to be rotatably supported by the horizontal support shaft 32a in the base portion 100 within ₁
And one end 33a is connected to a lower end 32c of a vertical side of the cam plate 32 via an intermediate rod 33b.
The other end of the second transmission rod 33, the base portion 100 horizontally through the vertical shaft 34a in _one pivotally arranged to the one end 34b transmitting rod 33 which is arranged to be moved in the vicinity of the clutch 22 33c, and a handle 34 pivotally connected via a pin 34d. The other end 34c of the handle 34 is connected to the second clutch element 22b of the clutch 22.
Is connected via a pin 34e to a biasing member 22d fitted to the outside.

That is, in the state shown by the solid line in FIGS. 6 to 8, the two clutch elements 22a, 22b of the clutch 22
Are engaged with each other, and the operating portion 82 is
32, the spring force of the repulsion spring 22c of the clutch 22 is transmitted to the operating portion 82 via the handle 34, the transmission rod 33, the cam plate 32, and the transmission rod 31, and the operating portion 82 is elastically moved above the pin 832. In order to maintain the engaged state, the operating portion 82 is maintained at the horizontal steady position, and the clutch 22 also maintains the engaged state. On the other hand, when a certain level of vibration occurs from this state, the weight 841 of the seismic isolation device 7 first falls down as shown by imaginary lines in FIGS.
The second engagement plate 843 inclines the rotating portion 83. And
As a result, the operating portion 82 is disengaged from the rotating portion 83, and the repulsion spring 22c interposed between the clutch elements 22a and 22b is extended through the transmission portion 3, whereby the clutch 22 is disengaged.

A reset knob 200 is provided on the front side of the side plate 102 of the fixed shelf A so as to be able to protrude and retract.
The reset knob 200 is connected to the cam plate 32 or the first transmission rod 31, and the release knob 200
, The handle 34 rotates, the clutch elements 22a and 22b re-engage with each other, and the operating portion 82 reversely rotates from the vertical posture to the horizontal posture to engage the engaging pin 832 of the rotating portion 83. Is resiliently engaged.

With such a configuration, the wheels 105 are normally connected to the sprocket 105a and the chain 2
4. Since the fixed shelf A is connected to the fixed shaft 21 via the sprocket 23 and the clutch 22, even if the fixed shelf A is pressed by hand, rolling of the wheels 105 is prohibited, and the fixed shelf 105 is fixed to the floor surface by bolts or the like. It will be in the same immobile state as when it is fixed. On the other hand, when the fixed shelf A is vibrated by a certain amount or more, the vibration detecting mechanism 8 detects the vibration, and the operating portion 82 rotates from the steady position to the operating position to release the clutch 22. Therefore, the first clutch element 22a to which the sprocket 23 is fixed is fixed to the fixed shaft 21.
Around the wheel 105a, the wheel 105a is connected to the sprocket 23, the clutch element 22a, and the chain 24.
And the fixed shelf A is on the rail R
You can move freely in any direction. In this state, the lower part of the fixed shelf A, that is, the base part 100 ₁
Vicinity with top or near the top plate 123 of the main body portion 100 _2, the upper rail relative movement results in full etc. stopped at a position at or near its original due to inertia, effectively against rolling to vibration in the rail direction The fall of the fixed shelf A can be prevented. In particular, such shelves are generally resistant to longitudinal sway and vulnerable to sway, but the movable shelf B is typically configured to be able to move on the rail R along the width. In the present embodiment, since the fixed shelf A is also movable in the same direction, the above operation can be properly performed.

Further, since the limiting mechanism 2 is composed of the fixed shaft 21 and the clutch 22, and the fixed shelf A is configured to stop its self-propelling function, no special fixing member is provided outside. In addition, the structure can be simplified, and an advantage that a fixed state can be realized at an arbitrary position on the rail R can be obtained.

Further, by disposing the vibration sensing mechanism 8 near the bottom surface of the movable shelf B, it is possible to quickly and surely detect the vibration at the location closest to the floor F, and the operating characteristics of the seismic isolation device 7. Can be effectively improved. further,
Since the vibration sensing mechanism 8 has a simple configuration using only mechanical parts, a reliable operation can be expected even under a huge vibration, and the possibility of failure can be reduced.

Further, since the reset knob 200 for returning from the operating position to the normal position is provided, the resetting operation after the seismic isolation device is operated can be easily performed, and the handling valve can be effectively improved. it can.

In addition, in this embodiment, the rail R is previously laid for the movable shelf B, and there is no need to separately provide a rail for the fixed shelf A. The man-hour can be reduced effectively.

The configuration according to the present invention is not limited to the above-described configuration. For example, in the above-described embodiment, the limiting mechanism 2 is configured by the fixed shaft 21 and the clutch 22. However, a fixed member fixed to a building structure floor or the like and a part of the fixed shelf is selectively engaged with the fixed member. It is also possible to use a mooring means for restraining, for example, a bar, so that the wheels can be rolled indirectly. Alternatively, a rail may be used as a fixing member, a hole may be formed in the rail, and a pin serving as mooring means suspended from the fixing shelf may be inserted into the rail so that the pin is pulled out when vibration is detected. . In such a configuration, the fixing force of the fixed shelf is obtained externally, and although the fixing position is restricted as compared with the above-described embodiment, there is an advantage that a reliable fixing state can be realized. In addition, the vibration sensing mechanism 8 is not limited to the configuration of the present embodiment, and may include other mechanical configurations, such as a configuration in which the weight is suspended downward, and an electrical configuration. It is also possible. Further, the present invention does not prevent the vibration sensing mechanism 8 from being arranged other than near the bottom surface. Other configurations can be variously modified without departing from the present invention.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fixed shelf to which an embodiment of the present invention is applied.

FIG. 2 is a side sectional view showing the fixed shelf of the embodiment partially omitted.

FIG. 3 is a front sectional view of the same.

FIG. 4 is a bottom view of the same.

FIG. 5 is an exemplary perspective view showing a part of the seismic isolation device of the embodiment;

FIG. 6 is a side sectional view showing a part of the seismic isolation device of the embodiment.

FIG. 7 is a front sectional view of the same.

FIG. 8 is a partially enlarged plan view showing the clutch of the same embodiment and its periphery.

[Explanation of symbols]

 A: Fixed shelf B: Moving shelf F: Floor surface R: Fixed rail 2 ... Restriction mechanism 3 ... Transmission means 7 ... Seismic isolation device 8 ... Vibration sensing mechanism 21 ... Fixed shaft 22 ... Clutch 82 ... Operating part 83 ... Rotating part 84: sensing unit 105: wheel

Claims (4)

(57) [Claims] 1. A wheel capable of rolling on a fixed rail laid on a floor, a limiting mechanism for directly or indirectly inhibiting rolling of the wheel in a limited state and releasing the inhibition in an open state, a vibration sensing mechanism for moving the actuating portion from the normal position into the working position by vibration, Ri Na and and a transmitting means for switching the open state the limiting mechanism from a restricted state in conjunction with the movement of the actuating portion, limits The mechanism consists of a fixed shaft and
The axle of the wheel is selectively connected to the fixed shaft of
Isolator fixed shelf, characterized in Rukoto is composed of a clutch that bundle. 2. Rollable on a fixed rail laid on the floor
Directly or indirectly prohibits rolling of the wheel and the wheel in the restricted state
A restriction mechanism that releases the prohibition in the open state,
The operating part is moved from the steady position to the operating position by the vibration.
The vibration detection mechanism to move
Transmission mechanism that switches the restriction mechanism from the restricted state to the open state
And a limit mechanism fixed to the building structure floor, etc.
Fixed part and a part of fixed shelf
And mooring means for engaging and restraining the
Characterized by a fixed shelf seismic isolation device. 3. A vibration sensing mechanism is provided near the bottom of the fixed shelf.
The seismic isolation device for fixed shelves according to claim 1 , wherein the seismic isolation device is provided. 4. Rollable on a fixed rail laid on the floor
Directly or indirectly prohibits rolling of the wheel and the wheel in the restricted state
A restriction mechanism that releases the prohibition in the open state,
The operating part is moved from the steady position to the operating position by the vibration.
The vibration detection mechanism to move
Transmission mechanism that switches the restriction mechanism from the restricted state to the open state
And the vibration sensing mechanism is operated from a steady position.
An operating part elastically biased in the direction of the movement position;
Engaged in a steady position and pivotally supported
A rotating unit, and a sensing unit that senses vibration and rotates the rotating unit
And the rotating part is caused by a certain level of vibration.
Rotates to disengage with the operating part and the operating part is stationary
Configured to move from the position to the operating position
A fixed shelf seismic isolation device characterized by the following: