JPH11196962A - Article drop preventing device for stock shelf - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an article drop preventing device for a stock shelf which can surely prevent articles from dropping off shelf boards when the shelf boards are vibrated without disturbing the loading and unloading of the articles under normal conditions. SOLUTION: When a seismoscope 10 is operated, a net 24 is drawn out by an energizing means 10 to cover at least a front face of a stock shelf by the net 24, and a part of the net 24 is held an edge part of a specific shelf board by a guide 10, whereby the articles 8 can be surely prevented from dropped form the shelf board 8. By using the net 24, the side range of the front face of the stock shelf can be covered, and the net 24 can be stored in compact, so it can be kept out of the way under normal conditions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing an article placed on a shelf of an article shelf from falling off the shelf.

[0002]

2. Description of the Related Art Conventionally, as an article drop prevention device for an article shelf of this type, there is known an apparatus disclosed in Japanese Utility Model Laid-Open No. 8-299080.

In this device, a stopper member projecting upward or downward via an urging spring is provided at a tip end of a shelf plate. Usually, the stopper member is inserted into the shelf plate by a locking member. When the vibration is detected by the vibration sensor, the locking state between the locking member and the stopper member is released, and the stopper member is protruded upward or downward from the shelf plate, and the article on the shelf plate is removed. Falling is prevented.

[0004]

However, in such a method, when the article is placed so as to reach the front of the shelf, the stopper member is not hindered by the article and does not protrude, so that the article falls. Not only can we prevent it,
If the height of the stopper member is greater than the thickness of the shelf, it will protrude to the lower part of the shelf during storage, which will hinder the loading and unloading of articles during normal operation, and if it is less than the thickness of the shelf, it will be a tall article. There is a problem that it is not possible to effectively prevent such a fall.

[0005] In addition, when a stopper member is attached by providing an elongated hole in the left-right direction on the upper surface of the tip of the shelf, there is a possibility that the strength of the shelf is reduced.

The present invention has been made in view of such problems, and does not hinder the loading and unloading of articles in a normal state, and when vibrations occur on the shelf, the articles are removed from the shelf. An object of the present invention is to provide an article fall prevention device for an article shelf that can reliably prevent the article from falling.

[0007]

In order to achieve the above object, an article drop prevention device for an article shelf according to the present invention comprises an article shelf comprising a shelf support member and a shelf attached to the shelf support member. In, a net storage portion provided at least in the vicinity of the front surface of the shelf board, storage in the net storage portion, and a net that allows the shelf board to be stretched to the front surface,
An urging means for extending the net, a guide for holding a part of the net at least near an end of a predetermined shelf, a locking device for holding the urging means at a predetermined position, and a sensor for detecting vibration. And a seismic device for releasing the locking between the locking device and the urging means. According to this feature, when the seismic device is actuated, the net is pulled out by the urging means, and at least the front surface of the article shelf is covered with the net, and a part of the net is guided by a guide to an end of a predetermined shelf plate. Since the article is held in the vicinity, the article is reliably prevented from dropping from the shelf. In addition, by using the net, the front surface of the article shelf can be covered over a wide area and can be stored compactly, so that it does not become an obstacle during normal times.

In the article drop prevention device for an article shelf according to the present invention, the net storage section is provided at least on the front side of the back surface of each shelf board, and the urging means and the guide are provided for each shelf board. Preferably.
By doing so, it is possible to stretch the net to a desired location in a short time.

In the article drop prevention device for an article shelf according to the present invention, the net storage section is provided at the uppermost part of the article shelf and at least on the left and right sides of the front surface of the article shelf so as to be along the front end of each shelf board. It is preferable that long grooves in the vertical direction are formed continuously, and both left and right ends of a horizontal bar attached to at least the tip of the net are slidably inserted in the long grooves in the vertical direction. In this way, the net is stretched by the drop of the horizontal bar due to its own weight, and the lower end of the stretched net is held, so that the structure is simplified and the article having a plurality of shelves is provided. 1 on the front of the shelf
It can be reliably covered with a single net.

In the article drop prevention device for an article shelf according to the present invention, it is preferable that a plurality of the horizontal bars are provided on the net so as to correspond to front positions of the respective shelves when the net is stretched. By doing so, the horizontal bar supported by the long groove is supported at the end of each shelf, so that the falling of the article from each shelf is reliably prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an article shelf 1 to which the present invention is applied. 2. Bottom plate 3, front and rear struts 4, 4 'provided between top plate 2 and bottom plate 3, and locking holes 5 formed in the vertical direction on the front surface of rear strut 4'. And a shelf plate 8 provided in a plurality of stages via a bracket 7 having a locking claw 6 (see FIG. 3). The shelf boards 8 in this embodiment can be provided at desired positions and in desired numbers by attaching and detaching the brackets 7.

At the rear of the back surface of each shelf plate 8 and top plate 2, FIG.
As shown in FIG. 3 and FIG. 3, a seismic device 9 and a locking device 11 for a guide rod 10 to be described later are provided.

The vibration sensing device 9 is connected to one end of a substantially L-shaped rotating piece 14 which is rotatably mounted in a horizontal direction via a shaft 13 of a mounting piece 12 fixed to the back surface of the shelf 8. It consists of a pendulum 15 attached.

The locking device 11 includes a locking rod 1 slidably provided in the left-right direction of the shelf 8 by two guide members 16.
, One end of which is locked via a locking pin 19 in a long hole 18 formed in the rotating piece 14, and the other end of which is a bracket 7.
An end is provided at a rear portion of the guide bar 10 so as to support a lower portion of a guide rod 10 rotatably pivotally mounted at a predetermined position. In addition, 2
Two compression springs 20 and 20 ′ are provided between the two guide members 16 in order to swing the pendulum 15 in the direction of the arrow in FIG. 2 in a balanced manner.

At the front of the back of each shelf 8 and top 2, a reinforcing member 21 of the shelf 8, a cover plate 22 fixed to the lower surface of the reinforcing member 21, and a folded portion 23 of the shelf 8 are provided. A net 24 storage section 25 is formed. In addition, this storage part 2
An opening 26 is formed at the front of the lower surface of 5.

One end of the net 24 is fixed to a predetermined position in the storage portion 25, and the other end is fixed to the front portion 10a of the external guide rod 10 through the opening 26. As shown in FIG. 3, the net 24 is stored in the storage unit 25 in a state of being folded in a bellows shape,
When the front portion 10a of the guide bar 10 is positioned on the upper surface of the shelf 8 below, the net 24 is pulled out from the opening 26 downward.

The operation of the thus structured article fall prevention device will be described with reference to FIGS. 2 and 3. First, in a normal state, the guide rod 10 is moved to the front portion 10a as shown in FIG.
Is supported by the locking bar 17 so that the net 24 is located below the opening 26 of the upper shelf 8, and the net 24 is
Is housed inside.

When vibration occurs in the article shelf 1 due to the occurrence of an earthquake or the like, the pendulum 15 starts to oscillate in the front-rear direction around the shaft 13, and accordingly, the locking rod 17 also starts to oscillate in the left-right direction in FIG. . When the amplitude reaches a predetermined width or more, the locking of the guide bar 10 by the locking bar 17 is released, the guide bar 10 is rotated by its own weight as shown in FIG. It is stopped by being regulated by the upper surface of the plate 8.

Here, the net 24 is pulled out by the front portion 10a, and the net 24 is stretched between the opening 26 and the front portion 10a on the upper surface of the shelf 8, that is, on the front surfaces of the upper and lower shelves 8,8. . Therefore, the article G or the like in FIG. 3 is prevented from falling from the front of the shelf 8.

In the present embodiment, the net 24 is pulled out by the guide rod 10 being rotated downward by its own weight, and the other end of the net 24 having one end fixed in the storage portion 25 is connected to the lower shelf plate 8. Since the article is held on the upper surface, falling of the article can be reliably prevented.

Further, since the vibration sensing device 9, the locking device 11, the guide rod 10, the net 24 and the storage portion 25 are provided on each shelf 8 (top plate 2), the rotation stroke of the guide rod 10 is set. Is shortened, and a net 24 is
Can be installed in a short time.

In the present embodiment, the seismic device 9 and the locking device 11 are provided on the individual shelves 8.
As shown in (a) and (b), predetermined positions of a plurality of guide bars 10 pivotally attached to the brackets 7 of the respective shelves 8 are linked by a vertically extending locking bar 17 so as to be interlocked,
The upper end of the locking rod 17 may be detachably provided with respect to a telescopic rod 27a of an electromagnetic solenoid 27 as a locking device connected to a seismic sensor 28 provided as a seismic device provided at a predetermined location. Good.

In this case, the guide bar 1 is normally operated by the locking bar 17 locked on the telescopic bar 27a of the electromagnetic solenoid 27.
0 is held in the storage position, and when the vibration is sensed, the locking between the telescopic bar 27a of the electromagnetic solenoid 27 and the upper end of the locking bar 17 is released, and the locking bar 17 is dropped. The guide rods 10 are simultaneously rotated by this drop, and the net 24 is stretched.

Thus, one seismic device 9 and locking device 1
Even when a plurality of guide rods 10 are interlocked with one another, the same operation and effect as those of the above-described embodiment can be obtained, the structure can be simplified, and the cost can be reduced. Further, the front surface of any one of the shelf boards 8 is not covered with the net 24.

FIGS. 5 and 6A and 6B show a second embodiment of the present invention. In the present embodiment, guide grooves 29 are formed on the inner surfaces of the front supports 4 and 4 in the vertical direction, and the guide grooves 29 are formed in the guide grooves 29 so as to accommodate the nets stored in the storage portions 25 of the individual shelf boards 8. Both ends of the horizontal bar 30 to which the distal end of 24 is fixed are slidably inserted in a vertical direction via a sliding member 31.

As shown in FIG. 6, a vertically extending locking rod 17 is provided in the support 4 and its upper end is
Telescopic rod 2 of electromagnetic solenoid 27 connected to seismic sensor 28
7a is provided so as to be detachable. In addition, a plurality of pins 32 are protruded at predetermined positions of the locking rod 17,
It is inserted into a long groove 35 formed in a locking piece 34 rotatably provided via a shaft 33 in the column 4.

The locking piece 34 supported by the pin 32 of the locking bar 17 is so arranged that the horizontal bar 30 is normally held at a position below the opening 26 of the storage section 25 as shown in FIG. , The sliding member 31 is supported.

When the vibration is detected by the seismic sensor 28, the locking between the telescopic bar 27a of the electromagnetic solenoid 27 and the upper end of the locking bar 17 is released, and the locking bar 17 is dropped. Due to the downward movement of the locking bar 17, the locking piece 34 is rotated downward, the horizontal bar 30 is dropped along the guide groove 29 by its own weight, and the net 24 is stretched on the front surface of the shelf plate 8.

Also in this method, the net 24 can be stretched on the front surface of each shelf 8 in a short time, and the same operation and effect as in the above-described embodiment can be obtained.

FIGS. 7 (a) to 7 (c) show a third embodiment of the present invention. The following description will be made with reference to the drawings. Top plate 2
The article shelf 1 in the cover body 36 fixed to the front portion of the upper surface
One end is fixed to a shaft member 37 facing the left and right direction, and is wound around the outer periphery thereof. Also, on the inner surface of the front support 4,
Guide grooves 29 are formed continuously along the vicinity of the front end of each shelf plate 8 in the up-down direction of the article shelf 1. Both ends of horizontal bars 30a to 30d attached every other can be slidably inserted in the vertical direction.

As shown in FIG. 7C, a locking piece 37a is formed on the shaft member 37 so as to be detachable from the telescopic rod 27a of the electromagnetic solenoid 27 connected to the seismic sensor 28. The rotation is restricted by the locking between the telescopic bar 27a and the locking piece 37a.

The operation of this embodiment constructed as described above will now be described.
, And only the horizontal bar 30a at the tip is held at the upper position of the guide groove 29 through the opening 26.

Then, the vibration is sensed by the seismic sensor 28,
When the locking between the telescopic bar 27a of the electromagnetic solenoid 27 and the locking piece 37a is released, the horizontal bar 30a at the tip falls in the guide groove 29 by its own weight, and the net 24 wound around the shaft member 37 is moved. It is pulled out. Each horizontal bar 3 on the way
0b to 30d are guided into the guide groove 29 through the opening 26, and when the horizontal bar 30a reaches the upper surface of the bottom plate 3, the horizontal bars 30b to 30d are stopped at the front positions of the respective shelf plates 8. .

As described above, in this embodiment, the horizontal bar 3
0a, the net 24 is stretched on the front surface of the article shelf 1 due to its own weight and the horizontal bars 30b-30
d is supported, the net 2 is located near the front of each shelf 8.
Since each of the parts 4 is held, it is possible to reliably prevent the article from falling off the shelf. In addition, only one storage section needs to be provided, and the structure is simplified.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention.

For example, in this embodiment, the net 24
Although it was designed to be stretched from above to below, for example, it may be provided to be stretched from below the front of the article shelf to the top, or to the left and right, and the stretching direction is Optional.

It is also possible to provide such that it is stretched toward the center from the upper and lower parts of the front surface or from the left and right sides of the front surface.

Further, not only the front surface of the article shelf but also the side surface, the rear surface, etc. may be covered by the net.

[0039]

The present invention has the following effects.

(A) According to the first aspect of the present invention, when the seismic device is operated, the net is pulled out by the urging means, and at least the front surface of the article shelf is covered with the net, and a part of the net is formed. Since the guide is held near the end of the predetermined shelf, the article is reliably prevented from falling off the shelf. In addition, by using the net, the front surface of the article shelf can be covered over a wide area and can be stored compactly, so that it does not become an obstacle during normal times.

(B) According to the second aspect of the present invention, a net can be installed at a desired location in a short time.

(C) According to the third aspect of the present invention, the net is stretched by the drop of the horizontal bar due to its own weight, and the lower end of the stretched net is held, thereby simplifying the structure. , The front of an article shelf having a plurality of shelves
It can be reliably covered with a single net.

(D) According to the fourth aspect of the present invention, since the horizontal bar supported by the long groove is supported at the end of each shelf, falling of the article from each shelf is reliably prevented. .

[0044]

[Brief description of the drawings]

FIG. 1 is a perspective view showing an installation state of an article shelf to which the present invention is applied.

FIG. 2 is a partially broken plan view showing the internal structure of the shelf board.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIGS. 4A and 4B are schematic diagrams showing an interlocking mechanism of a guide rod and its operation.

FIG. 5 is a partially cutaway side view showing a main part of an article shelf according to a second embodiment of the present invention.

6A is an enlarged sectional view of a main part of FIG. 5, and FIG.
FIG. 3A is a sectional view taken along line BB of FIG.

7A is a schematic side view showing an article shelf to which the third embodiment of the present invention is applied, FIG. 7B is an enlarged sectional view of a main part of FIG. 7A, and FIG. 7C is FIG. It is a schematic diagram showing the operation of.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Article shelf 2 Top plate 3 Bottom plate 4, 4 'support | pillar (shelf support member) 5 Lock hole 6 Lock piece 7 Bracket 8 Shelf 9 Seismic device 10 Guide rod (biasing means, guide) 10a Front part 11 Locking device 12 Mounting piece 13 Shaft 14 Rotating piece 15 Pendulum (Seismic device) 16 Guide member 17 Locking bar (Locking device) 18 Slot 19 Locking pin 20, 20 'Compression spring 21 Reinforcement member 22 Cover plate 23 Folding part 24 Net 25 Storage part (net storage part) 26 Opening 27 Electromagnetic solenoid (locking device) 27a Telescopic rod 28 Seismic sensor (seismic device) 29 Guide groove 30 Horizontal bar (biasing means, guide) 30a 30d Horizontal bar (biasing means, guide) 31 Sliding member 32 Pin 33 Shaft 34 Locking piece 35 Long groove 36 Cover body 37 Shaft member

Claims (4)

[Claims] 1. An article shelf comprising a shelf support member and a shelf attached to the shelf support member, wherein a net storage portion is provided at least near a front surface of the shelf plate, and is stored in the net storage portion. A net capable of being stretched to the front of the shelf, a biasing means for stretching the net, a guide for holding a part of the net at least near an end of a predetermined shelf, An article dropping on an article shelf, comprising: a locking device for holding the urging means at a predetermined position; and a seismic device for detecting vibration to release the locking between the locking device and the urging means. Prevention device. 2. The article according to claim 1, wherein said net storage portion is provided at least on the front side of the back surface of each shelf, and said urging means and said guide are provided for each shelf. An article fall prevention device on a shelf. 3. The net storage section is provided at the uppermost part of the article shelf, and at least on the left and right sides of the front face of the article shelf, vertically long grooves are continuously formed along the front end of each shelf board, 2. The article drop prevention device for an article shelf according to claim 1, wherein both left and right ends of a horizontal bar attached to at least a tip end of the net are slidably inserted into the long groove in a vertical direction. 4. The apparatus according to claim 3, wherein a plurality of the horizontal bars are provided on the net so as to correspond to front positions of the respective shelves when the net is stretched.