JPH0650404Y2 - Stopper for mobile shelf device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a stopper of a moving rack device for improving safety during an earthquake.

(Prior art) In a moving rack device in which a plurality of moving racks that can run along rails are installed so that they can be separated, the shaking rack is greatly shaken by the input of seismic energy. Not only is it dangerous to humans, as it may crash and fall if severe, and many falling objects have been confirmed by actual earthquakes and by experiments. In particular, when the drive wheels are locked in a non-rotatable manner by a locking device in order to prevent the moving shelves from starting to run unintentionally, seismic energy is directly input from the locked drive wheels and the locked drive Since the wheel slides on the rail and collides with the stopper, it is easy to reach the above dangerous state.

(Problems to be solved by the invention) The present invention has been made in order to solve the problems of the prior art. When a large earthquake energy is input, a stopper that determines the final traveling limit of the moving shelf is provided. Provided with a stopper for a moving rack device that absorbs traveling energy of the moving rack before the collision with the moving rack and prevents the moving rack from colliding with the stopper. The purpose is to do.

(Means for Solving the Problem) The present invention is a mobile rack device in which a plurality of mobile racks that can travel along a rail are installed so that they can be separated and set at a limit position of the travel range on the rail of the mobile rack. A stopper provided, a contact piece that is provided on the movable shelf side and is movable between a first position that abuts against the stopper and a second position that does not abut, and an earthquake detection unit that detects an earthquake And a driving means for moving the contact piece from the first position to the second position by detecting the earthquake when the earthquake detecting means detects the earthquake.

(Operation) When an earthquake is detected, the abutting piece is driven by the driving means from the first position where it abuts against the stopper to the second position where it does not abut against the stopper.
Is moved to the position, the movable rack is free to move along the rail, and seismic energy is absorbed by free rotation of the wheels.

(Embodiment) An embodiment of the stopper of the movable shelf device according to the present invention will be described below with reference to the drawings.

In FIG. 1 to FIG. 3, a rail plate 13 formed by bending so as to have a C-shaped cross section is embedded in a floor surface of a building or the like.
A rail 4 is laid on the inner bottom of the. On the rails 4, traveling wheels 2 of a movable shelf are rotatably mounted. The traveling wheel 2 is provided integrally with the shaft 5,
Are rotatably supported by beam members 18 fixed in the front-rear direction in the underframe 1 at the bottom of the movable shelf via appropriate bearings. As is well known, a plurality of rails 4 are laid in parallel,
A plurality of movable shelves are mounted along the rail 4 so as to be movable in a direction perpendicular to the opening surface, that is, in the front-rear direction, and the movable shelves are set so as to be aggregated and separated.

A first stopper 3 that defines the final travel limit of the travel range of the movable shelf is fixed to the upper surface of the end of the rail 4 and projects from the upper surface of the rail 4. The first stopper 3 projects considerably higher than the upper surface of the rail 4, and even if the moving rack travels at a considerably high speed and the wheel 2 comes into contact with the stopper 3, the wheel 2 cannot ride on the stopper 3. It is like this. Further, in front of the first stopper 3, a second stopper 6 is fixed along the side surface of the rail 4 for defining the traveling limit of the movable rack when the movable rack is used on a daily basis. The second stopper 6 is the rail 4
A cushioning member 15 made of urethane rubber or the like is attached to the end face on the right side in FIG.

There are a plurality of beam members 18 attached to the underframe 1 of the movable shelf, and a mounting member 20 made of a hat-shaped steel material is bolted to the lower surface of the pair of beam members 18 in a direction orthogonal to the beam members 18. It is installed by tightening. A guide member 22 is attached to the lower surface side of the attachment member 20 by bolting. In the guide member 22, the contact piece 7 is arranged so as to be slidable in the vertical direction. Two bolts 26 are screwed into the upper end of the contact piece 7. A supporting member 24 is fixed to the upper part of the mounting member 20 so as to cross the mounting member 20.
The two bolts 26 pass through 24. A coil spring 12 is provided on the outer periphery of the upper end of the bolt 26 protruding above the support member 24.
And the repulsive force of the spring 12 acts between the support member 24 and the nut screwed into the bolt 26,
26 and the contact piece 7 integral with this are urged to move upward. A groove is formed in the upper half of the contact piece 7, and the roller is provided by a shaft 28 that penetrates the contact piece 7 in the front-rear direction.
10 is rotatably supported in the groove. A cam plate 9 is fitted in the groove above the roller 10. The cam plate 9 is also slidably guided in a direction parallel to the rotation surface of the roller 10 by fitting in a guide groove formed in the support member 24. The lower edge portion of the cam plate 9 is a cam surface, and a notch 9a is formed in this cam surface.
The left end of the cam plate 9 in FIG. 2 is pivotally attached to the plunger of the solenoid 8. A coil spring 11 is hooked on the tip of the cam plate 9, and the cam plate 9 is urged by the elastic force of the spring 11 in the right direction in FIG. Solenoid 8
Is excited in a daily use condition of the movable rack, its plunger is attracted, and the cam plate 9 is moved against the spring 11, so that the lower surface of the cam plate 9 pushes down the roller 10.
Along with this, the contact piece 7 is pushed down, and as shown in FIG.
The lower end of the contact piece 7 moves to a position where it abuts the cushioning material 15 of the second stopper 6. The solenoid 8 is configured to be demagnetized when an earthquake having a seismic intensity exceeding a certain level is generated by a signal from the acceleration sensor, for example. Since the circuit having such a configuration can be easily configured, the illustration thereof is omitted. When the solenoid 8 is demagnetized, the cam plate 9 is moved to the right in FIG. 2 by the elastic force of the spring 11, and the notch 9a of the cam plate 9 corresponds to the position of the roller 10 so that the contact piece 7 Moves upward due to the elastic force of the spring 12, and the lower end of the contact piece 7 moves to a position where it does not abut the cushioning material 15 of the second stopper 6. Here, solenoid 8, cam plate 9,
The roller 10 and the coil spring constitute a driving means for moving the contact piece 7.

Next, the operation of the above embodiment will be described.

In a normal use state, the solenoid 8 is excited, and the lower end portion of the contact piece 7 is moved to the position where it abuts the cushioning material 15 of the second stopper 6 as described above. Therefore, in daily use of the mobile rack, the second stopper 6 defines the travel limit of the mobile rack.

Now, when an earthquake occurs and the seismic intensity exceeds a certain level, the excitation of the solenoid 8 is cut off by the detection signal of the sensor, and the cam plate 9 is moved by the elasticity of the spring 11, so that the roller 10 is shown by the chain line 10A in FIG. Move to the position shown. In this state, as described above, the lower end portion of the contact piece 7 has the second stopper 6
Since the movable rack moves to a position where it does not collide with the cushioning material 15, the movable rack does not collide with the second stopper 6 even if the movable rack shakes or tries to travel due to the input of seismic energy. Further, as the traveling range of the movable rack is expanded to the position where the wheel 2 comes into contact with the first stopper 3 as shown by the chain line 2A in FIG. 1, the movable rack is moved to the second stopper 6 by the seismic energy. It is possible to prevent the traveling energy of the movable rack from being consumed while the vehicle moves back and forth within a range from the position to be blocked to the position to be blocked by the first stopper 3 and to prevent the wheel 2 from colliding with the first stopper 3. It Further, even if the drive wheel is locked when the earthquake occurs and the drive wheel slides on the rail 4, energy is absorbed and moves while the movable rack moves to the position where the first stopper 3 blocks the movable rack. The shelf is prevented from colliding with the stopper. In this way, by preventing the movable rack and the stopper from colliding with each other, it is possible to prevent the movable rack from falling and prevent the articles contained therein from falling.

In addition, the solenoid is de-energized in daily use, and the second stopper and the movable rack are allowed to come into contact with each other in the non-excited state. The contact relationship may be canceled.

The type of the movable shelf applied to the present invention is not particularly limited, and may be an electric type, a manual rotary handle type, or a type that is manually pushed directly.

(Effect of the Invention) According to the present invention, when an earthquake is detected, the contact piece is moved and moved by the drive means from the first position that abuts the stopper to the second position that does not abut the stopper. The shelf becomes free to move along the rail, and the free rotation of the wheels absorbs the seismic energy, so the input of seismic energy prevents the moving shelf from crashing into the stopper even if it runs, and It is possible to prevent the articles from falling and to prevent the contained articles from falling, so that it is possible to reduce the risk to the human body.

[Brief description of drawings]

FIG. 1 is a partial sectional side view showing an embodiment of a stopper of a movable rack device according to the present invention, FIG. 2 is a partial sectional front view of the same as above, and FIG. 3 is a part of a rail and a stopper used in the above embodiment. It is a top view. 3 ... First stopper, 4 ... Rail, 6 ... Second stopper

Claims (1)

[Scope of utility model registration request] 1. A movable rack device in which a plurality of movable racks that can travel along a rail are installed so as to be separated from each other, and a stopper (6) is provided at a limit position of a movable range of the movable rack on the rail. And an abutment piece (7) provided on the movable shelf side and movable between a first position that abuts against the stopper and a second position that does not abut, and an earthquake detection means for detecting an earthquake And a drive means (8, 8) for moving the contact piece from the first position to the second position when the earthquake detection means detects an earthquake.
9, 10, 11), and a stopper for a moving rack device having.