JPH09215529A - Movable rack base isolation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage of each part in the case of an earthquake or the like by loosely fitting a coil spring to a sliding member in such a manner as to a movable rack can be further moved when a contact piece provided on the sliding member of an end movable rack is brought into contact with a receiving piece of the floor, and setting the allowable elastic deformation amount to such a value as to absorb horizontal vibrating force acting on the movable rack. SOLUTION: Bar sliding members 32 are fitted to the front and back lower parts 30a of a support member 30 constructed on front and rear posts 17 of a simplex end movable rack, and a contact piece 33 is formed on the forward end of the sliding member 32. A receiving piece 34 is installed on the end part of a shock absorbing rail 27 on the front and rear end sides of the movable rack, a compression coil spring 35 is loosely fitted to the sliding member 32, and the sliding member 32 is forced to project outward over the support member 30 by the spring force. If an earthquake occurs, even if the contact piece 33 of the sliding member 32 collides with the receiving piece 34, the simplex end movable rack is moved and in the meantime, the sliding member 32 is slid relatively to the simplex end movable rack to braked by the elastic repulsion of the compression coil spring 35.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a plurality of movable shelves,
In a moving shelf that can run on a running rail laid on the floor in a direction perpendicular to the front surface of the shelf, an earthquake having a horizontal vibration force component along the running rail direction or horizontal vibration due to a typhoon occurred. In this case, the present invention relates to a seismic isolation device for a movable shelf, which buffers the horizontal vibration force and bears it so as to prevent the movable shelf from tipping over due to the horizontal vibration force and the movable shelf and the traveling rail from being damaged. .

[0002]

2. Description of the Related Art In a movable rack, the movable rack is allowed to travel on a traveling rail. Therefore, in the event of an earthquake caused by a horizontal vibration force along the longitudinal direction of the traveling rail, the movable shelf moves on the traveling rail. Is easy to move, and in the past, in Japanese Patent Laid-Open No. 4-28
As described in Japanese Patent No. 305, the wheels on the traveling rail or the drive system for driving the wheels is positively fixed.

Further, as described in Japanese Patent Application Laid-Open No. 4-30808, in a manual type movable rack for manually moving the movable rack, the movable racks on both sides of the formed channel are stopped to maintain the formation channel. For this reason, an elastic protruding piece is arranged immediately below the wheel at the stop position, and the elastic protruding piece restrains the wheel on the traveling rail from rolling.

[0004]

[Problems to be Solved] However, when a large earthquake actually occurs or a large typhoon strikes in a high-rise building, in the moving rack described in Japanese Patent Laid-Open No. 4-28305, the wheels are on the traveling rail. Sliding and moving, the movable shelf hits the stopper that limits the movable range of the movable shelf,
The stopper and the abutting member that abuts this stopper may be damaged.

Further, in the movable rack described in Japanese Patent Laid-Open No. 4-30808, the elastic protruding piece cannot prevent the movable rack from moving due to a large horizontal vibration force.

Furthermore, it is better not to fix the wheels of the movable shelf.
Conventionally, there was a moving shelf without wheel fixing means because of the idea that the horizontal vibration force can be avoided.However, in such a moving shelf, the frequency of the horizontal vibration force matches the horizontal natural frequency of the movable shelf. If it is close or close, the movable shelves may violently vibrate horizontally, and the countermeasure against horizontal vibration was not perfect.

[0007]

SUMMARY OF THE INVENTION The present invention relates to an improvement of a mobile rack seismic isolation device which overcomes such difficulties.
A plurality of movable shelves, in movable shelves capable of traveling on traveling rails laid on the floor in a direction perpendicular to the front surface of the shelves, respectively, in the outermost end movable shelves of the plurality of movable shelves, A sliding member mounted slidably in a direction parallel to the traveling rail, a receiving piece provided on the floor so as to come into contact with an abutting piece of the sliding member, and abutting of the sliding member When a piece abuts on the receiving piece to the outside of the moving shelf from the central part of the traveling rail toward the end, the movable shelf further moves to the outside of the moving shelf from the contact position between the contact piece and the receiving piece. The coil spring described later elastically deforms so that it can move to
A coil spring for urging the movable end rack toward the center of the traveling rail by an elastic restoring force proportional to the elastic deformation amount, the coil spring being loosely fitted to the sliding member, and The allowable elastic deformation amount of the spring is set to a value sufficient to absorb the horizontal vibration force acting on the movable shelf.

Since the present invention is configured as described above, when an earthquake, typhoon, or the like occurs, a horizontal vibration force along the traveling rail acts on the movable shelf, and the movable shelf moves to the outside of the movable shelf. , When the abutment piece of the sliding member abuts the receiving piece on the floor, the horizontal deformation of the movable end rack is absorbed by the elastic deformation of the coil spring, and it is generated in proportion to this elastic deformation. The elastic repulsive force is transmitted to the end movable shelf, the end movable shelf is braked, and the movable shelf is stopped until the elastic deformation amount of the coil spring reaches its limit value.

As described above, according to the present invention, even if a large horizontal vibration force acts on the movable shelf due to an earthquake, a typhoon, or the like, the movable shelf is stopped by buffering the horizontal vibration force without generating a large impact force. Therefore, it is possible to prevent damage to the receiving piece, the part supporting it, the movable shelf main body, the wheels, etc., and also to prevent the books etc. stored in the movable shelf from falling. You can

Even during normal use, when the movable shelves are moved, the end movable shelves do not collide with the stopper due to the traveling inertial force thereof, so that the movable shelves need not be manually braked immediately before the stop. Also, the elastic deformation of the coil spring can automatically brake the movable end shelf, so that the passage of the movable shelf can be easily formed.

According to the second aspect of the present invention, it is possible to stably move the movable end shelf on the traveling rail during horizontal buffering due to elastic deformation of the coil spring.

According to the third aspect of the present invention, the front and rear axles that respectively support the front and rear traveling wheels are not obstructed by the front and rear axles even if they extend to the entire length in the shelf front direction. In addition, the support member can be easily and compactly attached to the movable end shelf.

Further, by constructing the present invention as set forth in claim 4, it is possible to lay out the traveling rail and the buffer rail substantially flush with the floor surface, and to exclude those projecting upward from the floor surface. Users can walk on the floor comfortably without getting their feet caught.

Further, according to the present invention as set forth in claim 5, it is sufficient to use only the traveling rail without using the buffer rail, the traveling rail is laid substantially flush with the floor surface, and above the floor surface. The above-mentioned claim 4 in which no protrusion is present.
In addition to the effects described above, the structure can be simplified, the number of parts can be reduced, and the cost can be greatly reduced.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention shown in FIGS. 1 to 9 will be described below. Mobile shelf 1
As shown in FIG. 1, two single end movable shelves 2 each having a front surface 4 formed therein and a front surface 4 having both front surfaces 4 formed therein
The two movable shelves 3 are arranged so that the front end surface 4 of the movable shelves 2 of the single end faces the multiple movable shelves 3 with the four movable shelves 3 of the four sandwiched therebetween. The single end movable shelf 2 and the double movable shelf 3 can travel on a traveling rail 6 laid on the floor 5 in a direction perpendicular to the front surface 4.

As shown in FIGS. 6 and 7, the traveling rail 6 has a C-shaped member 7 in which both ends of a channel member are bent inward at right angles, and a central upper surface of a bottom surface portion 7a of the C-shaped member 7. A rail main body 8 having a rectangular cross section and integrally fixed to the bottom of the bottom surface 7a of the C-shaped member 7 at fixed intervals, and the anchor receiving member 9 is fixed to the floor. After being fixed by the anchor bolts 11 driven into the slab 10, a mortar layer 12 is formed above it, and a floor tile (not shown) is stretched on the upper surface of the mortar layer 12, and the floor surface 13 on the upper surface runs. The rail 6 is formed slightly lower than the protruding portion piece 7b of the C-shaped member 7.

Furthermore, the single end movable shelf 2 and the double movable shelf 3
As shown in FIG. 2, side plate 14, top plate 15, underframe 1
It is composed of 6, pillars 17 and shelves 18, and as shown in FIGS. 4 to 7, shaft support members 19 are erected on the underframe 16 at upper and left and right ends of the traveling rail 6, respectively. A wheel 21 with a collar and a wheel 22 without a collar are integrally formed on a rotary shaft 20 having a length approximately the same as the front dimension of the movable end shelves 2 and the movable shelves 3 at the same intervals as the intervals between the three traveling rails 6. The bearing member 23 that is fitted and rotatably supports the rotary shaft 20 is a bolt nut.
It is attached to two front and rear portions of the shaft support member 19 by 24, and the single end movable shelf 2 and the multiple movable shelf 3 can travel on the traveling rail 6 back and forth.

Further, a driven sprocket (not shown) is fitted to the right end of the rotary shaft 20, a handle 25 is pivotally supported on the right side plate 14 so as to be rotatable, and is connected to a rotary shaft (not shown) of the handle 25. A drive sprocket (not shown) and an endless chain (not shown) are bridged over the driven sprocket, and when the handle 25 is turned in either direction, the wheel 21 with a collar and the wheel without a collar are provided.
22 is rotatably driven so that the single end movable shelf 2 and the multiple movable shelf 3 can travel back and forth.

Moreover, a fall prevention piece 26 is integrally attached to the front and rear lower portions 16a of the underframe 16 positioned in the front-rear direction of the shaft support member 19, and the lower engagement piece 26a of the fall prevention piece 26 is provided on the traveling rail 6a.
Is arranged below the overhanging piece 7b of the C-shaped member 7 with a gap, and when the large overturning motort acts on the single-end movable shelf 2 and the multiple-movable shelf 3, the downward locking of the overturning prevention piece 26 is performed. The piece 26a is locked to the overhanging piece 7b of the C-shaped member 7 to prevent the single-end movable shelf 2 and the multiple movable shelf 3 from tipping over.

Between the central traveling rail 6 and the left and right traveling rails 6, as shown in FIG. 8, the width of the C-shaped member 7 is parallel to the traveling rail 6 and is similar to the traveling rail 6. A buffer rail 27 having a narrow C-shaped cross section is laid on the floor 5, and as shown in FIG. 5, front and rear direction plates are provided on the front and rear pillars 17 located directly above the buffer rail 27 in the single-end movable shelf 2. 28 is integrally installed, and the front-rear direction plate 28 has a front-rear rotation shaft.
A notch 29 is formed so as to straddle 20, and a support member 30 is integrally attached to the front-rear direction plate 28 between the front and rear rotation shafts 20 by a bolt nut 31, and a front and rear lower portion 30a of the support member 30.
In addition, a rod-shaped sliding member 32 oriented in the same direction as the buffer rail 27.
Is slidably fitted, and the tip of the sliding member 32 is bent downward at a right angle to form a contact piece 33, which is received at the end of the buffer rail 27 on the front and rear end sides of the movable shelf 1. Piece 34 is attached integrally,
A compression coil spring 35 is loosely fitted in the sliding member 32, an outer end of the compression coil spring 35 is brought into contact with a flange 32a of the sliding member 32, and an inner end of the compression coil spring 35 is supported by a supporting member 30. Spring receiver 30 integrated with the front and rear lower part 30a
The sliding member 32 is in contact with b, and the sliding member 32 projects outward from the support member 30 by the spring force of the compression coil spring 35.

However, the front and rear positions of the receiving piece 34 are different from each other by the sliding member.
The sliding stroke S is set to 32, and the movable rack 1 is set closer to the front and rear center from the end of the traveling rail 6.

In the movable rack 1, a lock device (not shown) is provided on each of the single-end movable racks 2 and the multiple movable racks 3 so that another user can handle the narrowed passage 36.
Even if 25 is operated, the single end movable shelf 2 and the double movable shelf 3 are fixed so that the user inside the passage 36 can move the single end movable shelf 2 on both sides thereof,
It is designed so as not to be sandwiched between the double movable shelves 3 (this locking device is not necessary).

Since the embodiments shown in FIGS. 1 to 9 are configured as described above, when a large earthquake occurs and a horizontal vibration force having a component in the same direction as the traveling rail 6 acts on the movable rack 1. In addition, when the flanged wheels 21 and the collarless wheels 22 of the single end movable shelf 2 and the compound movable shelf 3 are fixed by a lock device (not shown), the collared wheels 21 and the collarless wheels 22 are placed on the traveling rail 6. As a result of slipping or rolling of the single end movable rack 2 and the double movable rack 3 by the locking device (not shown), the flanged wheels 21 and the collarless wheels 22 roll on the traveling rail 6, and the sliding members 32 come into contact with each other. Even if the contact piece 33 collides with the receiving piece 34 in the buffer rail 27, the single-end movable shelf 2 moves toward the front and rear ends of the moving shelf 1, while the sliding member 32 moves the single-end movable shelf 2 in the meantime. Sliding relative to the compression coil spring 35
Is compressed, and the elastic reaction force due to the compression deformation of the compression coil spring 35 acts on the single-end movable shelf 2, and the single-end movable shelf 2 is braked by the elastic reaction force.

As described above, since the contact piece 33 of the sliding member 32, the receiving piece 34, the single-end movable shelf 2 to which these are attached, and the buffer rail 27 are not subjected to a large stop impact force, Is not damaged.

The horizontal vibration force is applied to the compression coil spring 35.
Therefore, the single-end movable shelf 2 and the multiple movable shelf 3 do not generate a large overturning moment, and the overturning of the moving shelf 1 is more reliably prevented.

Further, the traveling rail 6 is slid by the compression coil spring 35 from the contact point of the outermost flanged wheel 21 and the collarless wheel 22 at the position where the contact piece 33 of the sliding member 32 contacts the receiving piece 34. Since the sliding stroke S of the moving member 32 is set to be long, it is possible to prevent the collared wheel 21 and the collarless wheel 22 from protruding from the traveling rail 6 onto the floor surface 13.

Furthermore, since the C-shaped members 7 of the traveling rail 6 and the protruding pieces 7b, 27b of the buffer rail 27 are substantially flush with the floor surface 13, and the receiving piece 34 does not project above the floor surface 13. When the user walks on the floor surface 13, it is possible to avoid stumbling over and falling over them.

In the embodiment shown in FIGS. 1 to 9, the buffer rail 27 is laid separately from the traveling rail 6, but FIGS.
When the width of the C-shaped member 7 of the traveling rail 6 can be widened as shown in FIG. 12, the contact piece 33 of the sliding member 32 is
The buffer rail 27 can be eliminated by disposing it between the overhanging piece 7b of the mold member 7 and the rail body 8.

In this embodiment, the receiving piece 34 is the traveling rail 6
It is only necessary to dispose the sliding stroke S of the sliding member 32 toward the center of the C-shaped member 7 from the end portion of 37, and 37 is the wheel with collar 2
1, a stopper that prevents rolling of the collarless wheel 22.

In the embodiment shown in FIGS. 10 to 12, since the buffer rail 27 is not required, the structure of the movable rack 1 is simplified, the number of parts is reduced, and the cost can be reduced.

In the above-described embodiment, the present invention is applied to the manually laid mobile rack, but the present invention can of course be applied to the electric mobile rack.

[Brief description of drawings]

FIG. 1 is a side view of a mobile shelf provided with an embodiment of a power isolation device according to the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is a cross-sectional side view cut along line IV-IV in FIG.

5 is a cross-sectional side view cut along the line VV of FIG. 2. FIG.

6 is a vertical sectional front view of a main part of a VI portion of FIG.

FIG. 7 is a vertical sectional front view of a main part of a portion VII of FIG.

FIG. 8 is a vertical sectional front view of a main part of a portion VIII in FIG.

FIG. 9 is a perspective view showing a state in which a sliding member and a compression coil spring are attached to the front-rear direction plate.

FIG. 10 is a cross-sectional side view of a main part of another embodiment.

FIG. 11 is a vertical sectional front view of a main part of the embodiment of FIG.

FIG. 12 is a perspective view showing a state where a sliding member and a compression coil spring are assembled to the front and rear direction plates in the embodiment of FIG.

[Explanation of symbols]

1 ... movable shelf, 2 ... single end movable shelf, 3 ... double movable shelf, 4 ...
Frontage surface, 5 ... Floor, 6 ... Traveling rail, 7 ... C-shaped member, 8 ... Rail body, 9 ... Anchor receiving member, 10 ... Floor slab, 11 ...
Anchor bolt, 12 ... Mortar layer, 13 ... Floor surface, 14 ... Side plate, 15 ... Top plate, 16 ... Underframe, 17 ... Pillar, 18 ... Shelf plate, 19 ... Shaft support material, 20 ... Rotating shaft, 21 ... Tsuba Wheel with, 22 ... Wheel without collar,
23 ... Bearing member, 24 ... Bolt nut, 25 ... Handle, 26 ...
Fall prevention piece, 27 ... Buffer rail, 28 ... Front-rear direction plate, 29 ... Notch, 30 ... Support member, 31 ... Bolt nut, 32 ... Sliding member, 33 ... Abutment piece, 34 ... Receiving piece, 35 ... Compression Coil spring, 36 ... passage, 37 ... stopper.

Claims (5)

[Claims] 1. A movable shelf in which a plurality of movable shelves are capable of traveling on traveling rails laid on the floor in a direction perpendicular to the front surface of the shelves, and the outermost of the plurality of movable shelves is provided. A sliding member slidably attached to the end movable shelf in a direction parallel to the traveling rail; a receiving piece provided on the floor so as to come into contact with an abutting piece of the sliding member; When the abutment piece of the moving member abuts the receiving piece to the outside of the moving shelf from the central portion of the traveling rail toward the end, the movable shelf is moved from the abutting position of the corresponding abutting piece and the receiving piece. The coil spring is elastically deformed so that it can be further moved to the outside of the movable shelf, and the end movable shelf is biased toward the central portion of the traveling rail by an elastic restoring force proportional to the elastic deformation amount. And a coil spring, wherein the coil spring is mounted on the sliding member. With the allowable amount of elastic deformation of the coil spring, the movable shelf isolator, characterized in that it is set to a value sufficient to be sufficiently absorbed horizontal vibration forces acting on the movable shelf. 2. The allowable elastic deformation amount of the coil spring is greater than the point at which the outermost wheel of the movable end shelf is located on the traveling rail when the contact piece of the sliding member is in contact with the receiving piece. The seismic isolation device for a moving rack according to claim 1, wherein the traveling rail is extended to the outside of the moving rack by an amount corresponding to the amount. 3. A support member for slidably supporting the sliding member in the traveling direction of the movable shelf is detachably mounted between front and rear axles that respectively support front and rear traveling wheels of the end movable shelf. The mobile rack seismic isolation device according to claim 1 or 2, characterized in that the seismic isolation device for a mobile shelf is provided. 4. The traveling rail is embedded in the floor so that the upper surface of the traveling rail is flush with the floor surface, and the contact piece of the sliding member is moved in the groove of the buffer rail described later. A buffer rail that guides freely is embedded in the floor such that the buffer rail is parallel to the traveling rail and the top surface of the buffer rail is flush with the floor surface, and the top surface of the receiving piece is flush with or above the floor surface. 4. The claim 1, claim 2, or claim 3, wherein the receiving piece is provided in the buffer rail groove so as to be lowered.
Mobile rack seismic isolation device described. 5. The traveling rail is embedded in the floor so that the upper surface of the traveling rail is flush with the floor surface, and the abutting piece of the sliding member is movable in the groove of the traveling rail. The guide piece is provided in the traveling rail groove so that the upper surface of the support piece is flush with or lower than the floor surface. Claim 3
Mobile rack seismic isolation device described.