JP2008161441A - Fall prevention apparatus and fall prevention system for storage rack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fall prevention apparatus and a fall prevention system for a storage rack capable of reliably preventing stored objects from falling when a big earthquake occurs without disturbing putting in and taking out of the stored objects in normal times. <P>SOLUTION: In normal times, a stopper at least a part of which is provided with a magnetic material is attracted by an electromagnet, held at a prescribed position, and placed. After forecast information on an earthquake is received, the stopper attracted to the electromagnet is released from the electromagnet to operate a posture allowing fall prevention of the stored objects by quickly disconnecting or switching current of the electromagnet. Thus, mechanism for prevention of falling of the stored objects on the storage rack is reliably established before a big earthquake occurs. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a storage shelf fall prevention device and a storage shelf fall prevention system for preventing the fall of stored items stored in a shelf structure when an earthquake occurs.

Conventionally, as a countermeasure against earthquakes, techniques for preventing the fall of various items stored in a shelf structure have been developed. For example, in Patent Document 1 below, support columns having a plurality of locking holes are provided on both sides of a shelf front in order to prevent articles stored in a bookshelf from jumping forward and falling due to a vibration such as an earthquake. And a regulating member comprising a shaft portion to be inserted into the locking hole, an arm extending from the shaft portion, and a regulating bar existing between both arm tips, wherein the regulating member is operated by vibration. An invention of an anti-falling device for an earthquake-sensitive article storage shelf is disclosed. In the above device, a weight is attached to the side opposite to the arm side of the shaft part. Normally, the control bar is arranged along the front of the shelf, while the weight moves due to the occurrence of vibration. The control bar is actuated to a posture for preventing the article from falling.

As another technique, a technique of a fall prevention mechanism described in Patent Document 2 below is known. The fall prevention mechanism includes a front enclosure having a width substantially the same as the width of the shelf board, and a working enclosure comprising side enclosures provided in arms at both ends of the front enclosure. The side enclosure is locked so that it is positioned almost vertically, and when a predetermined vibration occurs, the lock is released and the operating enclosure moves to the specified position to prevent the article from falling. It is characterized by taking a posture to do.

As described above, as disclosed in Patent Documents 1 and 2, when an earthquake occurs, the apparatus is operated by using the vibration to complete the fall prevention posture and prevent the object from falling. A fall prevention technology (hereinafter, this technology is also referred to as “conventional technology 1”) is known.

As another technique, Patent Document 3 below discloses an invention of an apparatus for preventing a lateral shift of a pallet of a stacked shelf. This invention is an apparatus that is fixedly provided on a horizontal member of a main body of a stacked shelf, and is characterized by including a stopper member that is positioned above the bottom surface of the pallet placed on the shelf. . According to such a configuration, even if the position of the pallet is shifted due to an earthquake, the pallet can be in contact with the stopper member and prevented from falling.

That is, as disclosed in Patent Document 3, the device is fixed in advance to a position that can come into contact with a stored item on a shelf or the like, and its posture does not change before and after the occurrence of an earthquake, and movement of stored items due to vibration is not allowed. A technique for preventing this (hereinafter also referred to as “conventional technique 2”) is known.

Japanese Patent Laid-Open No. 2000-14467 JP-A-8-266353 JP 2006-182470 A

The above-described conventional technology relating to fall prevention has the following problems.

First, the problems of the prior art 1 will be described. The prior art 1 is excellent in that it is arranged so as not to obstruct the loading and unloading of the stored items by placing the fall prevention structure along the shelf in normal times. Because the action to the fall prevention posture is due to the vibration at the time of the earthquake occurrence, there is a possibility that the stored items may fall between the occurrence of the earthquake and the fall prevention posture is completed, so that the fall There was a problem that could not be prevented.
In addition, it is difficult to adjust the operation according to the scale of the earthquake, and there is a possibility that the device may operate depending on how the earthquake shakes even if the vibration is not necessary to prevent the fall. In this case, there is a problem that it is unnecessary to return to the initial posture. In the invention disclosed in Patent Document 2, it is described that the device operates when a predetermined vibration occurs, and specifically, an aspect in which a magnet is used as a member for holding the operating enclosure is described. Has been. According to this aspect, it is described that the position of the center of gravity is set by adjusting the mounting position of the magnet with respect to the rotation fulcrum provided in the operating enclosure, and the force for holding the operating enclosure of the magnet is adjusted. However, considering various ways of shaking such as pitching and rolling, the means of releasing the holding state by the magnet due to the vibration is a reliable way to operate the storage rack fall prevention device when the predetermined vibration occurs. It is not a means.

Next, problems of the prior art 2 will be described. The prior art 2 is a device that always takes a fixed posture. In other words, since the posture is surely prevented from falling when an earthquake occurs, it can be said that this point is superior to the prior art 1. . However, since the stopper member always exists at a position higher than the bottom surface of the stored article, there are cases where the stored article is disturbed. In particular, as disclosed in Patent Document 3, in a stacked shelf in which articles are mounted and stored on a pallet, the pallet cannot be taken in and out along the bottom surface of each shelf, and the pallet is a stopper member. Since it has to be lifted and removed at a height higher than the height, storage work is difficult.

The present invention has been made in view of the above-described problems, and can reliably prevent falling of stored items when an earthquake of a predetermined scale occurs, and obstructs the loading and unloading of stored items during normal times. It is an object of the present invention to provide a storage shelf fall prevention device and a fall prevention system that are free from damage.

The feature of the present invention is that, at normal times, a stopper having at least a part of a magnetic material is attracted by an electromagnet and held in a predetermined position, and the current of the electromagnet is promptly received after receiving earthquake prediction information. By cutting or switching, the stopper that has been attracted to the electromagnet is released from the electromagnet to operate in a posture that allows the stored items to be prevented from falling.

That is, the first invention is
A stopper having a magnetic body at least in part, and a stopper holding member having an electromagnet in at least a part,
A receiving device for receiving earthquake prediction information; and a current operating device for cutting or switching a current flowing through the electromagnet based on the information received by the receiving device, and the stopper holding member is housed. It is a storage shelf fall prevention device provided at an arbitrary position of the shelf, and holds the stopper in a normally disposed posture by attracting a magnetic body in the stopper by the magnetic force of the electromagnet in the stopper holding member. When the earthquake prediction information is received by the receiving device, the current operating device cuts off or switches the current flowing through the electromagnet based on the earthquake prediction information, thereby releasing the stopper from the magnetic force of the stopper holding member. A fall prevention device for a storage shelf, characterized by a fall prevention posture,
Is a summary.

Further, as a secondary means in the first aspect of the present invention, when the current flowing through the electromagnet is cut or switched, a guide mechanism for guiding the stopper to a fall prevention posture may be provided, or The stopper may be provided with a stopper receiving part for receiving the stopper and holding the falling prevention posture when the stopper assumes the fall prevention posture, or a buffer material is provided on at least a part of the side surface of the stopper. Or the expansion / contraction direction is perpendicular to the stopper and the stopper holding member between the stopper held in the normal arrangement posture and the stopper holding member holding the stopper. A spring body is provided in the direction, and the elastic force of the spring body is determined by the electromagnet in the stopper holding member. It may be one less than the force to attract, or may be a combination of these means.

The second aspect of the present invention
A stopper holding means for attracting and holding the magnetic body portion of the stopper provided with a magnetic body by passing an electric current through a stopper holding member including an electromagnet, a receiving means for receiving earthquake prediction information, and the receiving means A current operation means for performing a current operation to cut off or switch the current when receiving earthquake prediction information;
A stopper operating means for operating the stopper to a predetermined position by implementing the current operation means, and a storage shelf fall prevention system,
Is a summary.

In the second aspect of the present invention, the receiving means includes an information receiving section that receives earthquake prediction information, and an instruction section that instructs the current operating means to operate a current based on the received information prediction information. Also good.

In the present invention, the “magnetic material” refers to a substance capable of being magnetized or a permanent magnet. More specifically, examples include iron oxide, chromium oxide, cobalt, ferrite, neodymium magnet, samarium cobalt magnet, arconia magnet, ferrite magnet, and the like, but include conventionally known ones.

Further, in the present invention, “earthquake prediction information” is a sign that appears before a large shake caused by an earthquake, and can be distributed as data to a terminal receiving device before a large-scale earthquake related to the sign occurs. Means information. The above signs include P wave generation breaking news, which is the initial tremor before the occurrence of a major earthquake.

In the present invention, the “normally disposed posture” means a posture in which the stopper is attracted and held by the stopper holding member, and the “fall prevention posture” means that the stopper is released from the holding force of the stopper holding member. It means a posture taken as a result of the stopper being actuated to a posture for preventing the object storage item from falling.

The storage rack fall prevention device of the present invention can actuate the stopper in a posture that prevents the fall of the stored items after receiving the earthquake prediction information and before the occurrence of the earthquake. That is, according to the present invention, when an earthquake occurs, the stopper is disposed at a position to prevent the stored item from falling, and thus the stored item can be reliably prevented from falling.

Further, the holding member for holding the stopper can be provided at an arbitrary portion such as a side surface or an upper surface of the storage shelf. Therefore, in a normal state, the stopper held by the stopper holding member can be designed to be disposed at a position that does not interfere with the taking in / out of the articles stored in the storage shelf, for example, at a position along the side surface or the upper surface of the shelf. it can. Therefore, the position of the stopper holding member and the attitude of the stopper held by the stopper holding member can be appropriately determined according to the type of articles stored in the storage shelf and the method of using the shelf.

The best mode for carrying out the present invention will be described below with reference to the drawings.

FIG. 1 (1A) is a perspective view showing a normal state of the storage rack fall prevention device 1 showing an embodiment of the present invention. The storage shelf fall prevention device 1 is provided with a stopper holding member 3 including an electromagnet at a position inside the shelf side surface 103 of the shelf 101 and in the vicinity of the shelf opening frame 102, and the iron stopper 2 is the above-described stopper. The stopper holding member 3 is arranged so as to be attracted by the electromagnet and to stand along the inner side surface of the shelf side surface 103. The stopper holding member 3 is connected to the current operation device 4 and the earthquake prediction information receiving device 5 in this order by a cord 8. On the other hand, an auxiliary member 6 for preventing the stopper 2 from being inclined in a direction other than a desired direction is provided at the front corner portion of the shelf composed of the shelf lower surface 104, the shelf side surface 103, and the shelf opening frame 102, When the stopper 2 is inclined to a desired position on the shelf lower surface 104 along the auxiliary member 6 in order to take the fall prevention posture, the stopper receiving portion 7 for receiving the stopper 2 and holding the fall prevention posture. Is provided on the shelf lower surface 104.
In the description related to the opening frame 102 in this specification, of the four pieces constituting the opening frame 102, the lower piece is standing on the lower surface of the opening frame 102, the upper piece is standing on the upper surface of the opening frame 102, and two pieces standing on both sides. May be referred to as a lateral surface of the opening frame 102.

In FIG. 1 (1 B), the stopper 2 is released from the force (hereinafter also simply referred to as “holding force”) that the electromagnet in the stopper holding member 3 pulls the stopper 2 and holds it in the normal position. It is a front view which shows the state which incline in the direction opposite to the side surface 103, is received by the stopper receiving part 7, lies on the shelf lower surface 104, and lies in the position adjacent to the shelf opening frame 102, and has taken the fall prevention posture. . Thus, since the upper surface of the stopper 2 in a state of being received by the stopper receiving portion 7 is at a position higher than the shelf lower surface 104, the stored items accommodated in the shelf 101 have moved forward due to earthquake vibration. Even in this case, the stopper 2 can be a physical obstacle, and the stored item can be prevented from dropping from the opening frame 102 to the front side of the sheet.

Release of the holding force of the stopper holding member 3 is achieved by manipulating the current flowing through the stopper holding member 3.

That is, in the normal fall prevention device 1, a current is passed through the electromagnet provided on the stopper holding member 3, and the stopper 2 made of iron as a magnetic material is attracted to the stopper holding member 3. The normal arrangement posture is maintained.
On the other hand, when the earthquake prediction information receiving device 5 receives information for predicting the occurrence of an earthquake, the current operating device 4 is instructed to immediately cut the current, and based on this, the current operating device 4 cuts the current. The operation is automatically performed, and the magnetic force of the electromagnet in the stopper holding member 3 becomes almost zero. As a result, the force for holding the stopper 2 disappears, and the stopper 2 is tilted in a predetermined direction, that is, in a direction to be received by the stopper receiving portion 7 and assumes a fall prevention posture.

In another aspect, the stopper 2 itself can be formed by using a permanent magnet, and at the normal time, the permanent magnet and an electromagnet provided inside the stopper holding member 3 can be attracted to have a normal position. .
When the earthquake occurrence prediction information is received, the current operating device 4 is instructed to switch the direction of the current flowing through the electromagnet to the reverse flow, and based on this, the current operating device 4 changes the current direction. The electrode of the stopper holding member 3 may be reversed by automatically switching to a flow in the direction opposite to the direction that has been flowing up to that point. As a result, the permanent magnet as the stopper 2 that has been attracted so far and the electromagnet in the stopper holding member 3 repel each other, the holding force of the stopper 2 disappears, and the stopper 2 is away from the stopper holding member 3, that is, the stopper It inclines in the direction in which the receiving part 7 is installed, and is received by the stopper receiving part 7 to take a fall prevention posture.

As described above, the mechanism for holding the normal arrangement posture of the stopper 2 is that the electromagnet in the stopper holding member 3 and the stopper 2 are attracted by magnetic force. Therefore, in FIG. 1, the stopper 2 made of iron or the stopper 2 made of a permanent magnet has been described, but the stopper in the present invention is not limited to this. The stopper according to the present invention only needs to be provided with a magnetic material at a part of the stopper in order to attract the electromagnet provided to the stopper holding member by a magnetic force at least to the extent that the normal arrangement posture is maintained.

When a magnetic body is provided on a part of the stopper, for example, the magnetic body may be laminated or attached to an appropriate side surface of the stopper. Alternatively, a magnetic material may be embedded inside the stopper, and a part of the magnetic material may be exposed on the surface of the stopper 2. Alternatively, the upper or lower end of the stopper is made of a magnetic material and the other end is made of a member made of another material, or the upper and lower ends of the stopper are made of a material made of a material other than the magnetic material, The intermediate part sandwiched between the lower ends may be made of a magnetic material.
In addition, in a stopper partially provided with a magnetic material, members other than the magnetic material constituting the stopper may be appropriately selected in consideration of the type, weight, etc. of the article to be prevented from falling. However, it is desirable to have a strength that is not easily destroyed by contact with stored items that move within the shelf due to vibration.

The shape of the stopper is not particularly limited as long as it is a shape that can prevent the articles stored in the storage shelves from dropping when taking a fall prevention posture in the event of an earthquake. It can be set as appropriate in consideration of the type, shape, weight, etc. of the target article. For example, in a shelf in which one pallet is stored in one shelf, in order to prevent the pallet from falling, a stopper having a length less than the width of the shelf 101, such as the stopper 2 shown in FIG. It may be. On the other hand, in the case of a stopper for preventing a drop of a shelf in which a plurality of articles are stored, a stopper having a substantially full length in the width direction inside the shelf opening 102 is used so that the plurality of articles are prevented from dropping. It is desirable.

The stopper holding member 3 only needs to have a structure including at least an electromagnet, and may be an electromagnet itself. In the present invention, an “electromagnet” refers to a magnet that can temporarily generate a magnetic force when energized. Generally, it can be formed by winding a coil around a core made of a magnetic material (one that is used as the magnetic material excluding a permanent magnet).

The current operating device 4 is connected to the stopper holding member 3 by the cord 8, and receives information in the earthquake information receiving device 5 described below, and receives the information to quickly cut the current flowing through the stopper holding member 3. Or a device for switching the flow of current. In the present invention shown in FIG. 1, the illustration of the power source for securing the current flowing through the stopper holding member 4 is omitted. The same applies to the drawings described below.

The earthquake prediction information receiving device 5 is a device for receiving specific information related to earthquake prediction, and is a terminal capable of receiving information distributed as earthquake prediction information, and a current operation for connecting the received information to the information. This is a device having a function of transmitting to the device 4.
In addition, although the example which used the electric current operation apparatus 4 and the earthquake prediction information receiving apparatus 5 as an independent apparatus was shown in FIG. 1, the said description does not limit the aspect of this invention. In the present invention, it is important that the earthquake prediction information distributed from the outside is received and the current of the electromagnet in the stopper holding member can be cut or the current can be switched by receiving this information. is there. Therefore, it is not excluded to form these devices as one device. In one apparatus, there may be provided a part capable of receiving earthquake prediction information and a part capable of cutting off or switching the current flow based on the information.
Alternatively, another device for obtaining information received by the earthquake prediction information receiving device 5 and giving a current operation instruction to the current operation device 4 is provided between the earthquake prediction information reception device 5 and the current operation device 4. Also good.
That is, in the present invention, means for receiving earthquake prediction information, means for giving a current operation instruction based on the information received by the means, current operation means capable of cutting or switching the current upon receiving the current operation instruction, It is important to provide a device having at least

The earthquake prediction information receiving device 5 may receive all the earthquake prediction information transmitted, or may selectively receive only earthquake prediction information having a certain seismic intensity or more. .
As described above, when all the earthquake prediction information is received by the earthquake prediction information receiving device 5, the current operation device 4 subsequent thereto may operate the current based on all of the earthquake prediction information. Alternatively, the current operation may be performed by selecting only the earthquake prediction information representing the seismic intensity of a certain level or more from the earthquake prediction information.

The gist of the present invention is that, in normal times, the stopper that is held in the normal arrangement posture that is not inconvenient for the use of the shelf is in a fall prevention posture after obtaining earthquake prediction information and before a large-scale earthquake occurs. By doing so, it is to reliably prevent the stored items stored in the storage shelf from dropping. Therefore, when the earthquake prediction information receiving device 5 receives the breaking data based on the detection data of the P wave, the current operating device 4 is immediately cut off or switched so that the direction of the current is reversed, Accordingly, it is desirable that the stopper 2 operates so as to take a fall prevention posture. As a result, before the S-wave reaches and a large-scale earthquake occurs, it is possible to take a preventive posture sufficiently.

The earthquake preliminary information receiving device 5 may be any device that can receive a data signal related to earthquake prediction information, regardless of whether it is wireless or wired. For example, a conventionally known receiving device that can receive data distributed by satellite communication, data distributed by communication via the Internet, acoustic communication data using sound waves or ultrasonic waves, and the like can be used.
Examples of information that can currently be used as emergency earthquake bulletins include earthquake bulletins in the Hi-net earthquake observation system of the Ministry of Culture and Disaster Prevention Science Laboratory, or Nowcast earthquake information of the Japan Meteorological Agency.

Some embodiments will be described below as examples of the storage shelf fall prevention device of the present invention.
FIG. 2 is a perspective view showing the storage shelf fall prevention device 1 a of the present invention installed on the shelf 101. 1 except that the stopper 2 and the stopper holding member 3 are arranged on the right side of the shelf opening frame 102 and the auxiliary member 6 and the stopper receiving portion 7 are arranged on the lower surface of the shelf opening frame 102. It is formed in the same manner as the storage shelf fall prevention device 1 shown. Like the stopper receiving portion 7 in the storage shelf fall prevention device 1a, the aspect in which the upper portion of the stock receiving portion 7 is installed at the position below the shelf lower surface 104 surface is the storage and removal of stored items due to the presence of the stopper receiving portion 7. From the viewpoint of not disturbing.

FIG. 3A is a perspective view showing the storage shelf fall prevention device 1 b of the present invention installed on the shelf 101. In the storage shelf fall prevention device 1b, stopper holding members 3 ′ and 3 ″ are provided at two positions on the upper surface of the shelf opening frame 102, and the stopper 2 ′ is formed by the above-described two stopper holding members. A substantially horizontal state on the upper surface of 102 is held as a normal posture. Further, stopper receiving portions 7 ′ and 7 ″ are provided at substantially the same height on both side surfaces of the shelf opening frame 102. The cord 8 is bifurcated at one end and connected to both of the two stopper holding members 7 ′ and 7 ″, the other end is connected to the current operation device 4, and then the earthquake prediction information receiving device 5 is connected. It is connected to the.
The shelf opening frame 102 is provided with a groove 106 from the position where the stopper receiving portions 7 ′ and 7 ″ are provided to the upper surface of the shelf opening frame 102.

3B is a cross-sectional view taken along the line AA in FIG. 3A. As shown in the cross-sectional view, convex portions 11 are provided at both ends of the back side surface of the stopper 2 ′, and are fitted in the groove portions 106 described above.
When the electric current of the electromagnet in the stopper holding members 3 ′ and 3 ″ is cut and the stopper 2 ′ is released from the attractive force of the electromagnet, the stopper 2 ′ falls downward according to its own weight, and the receiving portions 7 ′ and 7 ′. The fall prevention posture which is received by ′ and becomes substantially horizontal at the middle position of the lateral surface of the shelf opening 102 is taken. The groove portion 106 in the shelf opening frame 102 and the convex portion 11 in the stopper 2 are not indispensable structures in the present invention. However, by providing a fitting structure between the shelf 101 main body and the stopper 2 ′, the stopper 2 ′ is a stopper. When released from the holding force of the holding member 3, the stopper 2 ′ is smoothly guided along the shelf opening frame to the receiving portions 7 ′ and 7 ″, which is preferable because it can take a fall prevention posture with certainty. .

FIG. 4 shows a storage shelf fall prevention device 1 c according to the present invention provided on a shelf 111 having a double door 112 and a door 113. The storage rack fall prevention device 1c includes a stopper holding member 3 provided above the door 113, a stopper 2 held by the stopper holding member 3 and fastened to the door by a fastener 9, and a stopper at the door 112. The stopper receiving part 7 provided in the height substantially the same as the lower surface of 2 is provided. The cord 8, the current operation device 4, and the earthquake prediction information receiving device 5 are the same as those of the storage shelf fall prevention device 1 shown in FIG. The design may be changed so that the cord 8 is penetrated through the back side surface of the door 113 and cannot be seen in front view.

4 is a member for fastening one end of the stopper 2 to the door 113 in a rotatable state. The rotation angle of the clasp 9 may be 360 degrees or less, and at least the angle required for the stopper 2 to change from the normal installation posture to the fall prevention posture is sufficient. Further, a spring body that shows elasticity only in one rotation direction may be incorporated in the fastener 9. As the spring body, the stopper 2 exhibits elasticity only in the direction from the normal installation posture to the fall prevention posture, and the elastic force is greater than the force with which the stopper holding member 3 holds the stopper 2. Use a weak one. By incorporating the spring body into the fastener 9, the stopper 2 is normally held in the normally disposed posture by the holding force of the stopper holding member 3, and when released from the holding force, the spring body By the elastic force, it can be tilted smoothly in the direction of taking the fall prevention posture.
Even when the spring 9 is not incorporated in the fastener 9, the stopper 2 is designed so that the normal arrangement posture of the stopper 2 is not vertical but inclined to the fastener 9 side. When released from the holding force of the holding member 3, it can be favorably inclined toward the receiving portion 7 by the weight of the stopper 2.

In the storage shelf fall prevention devices 1, 1a, 1b, and 1c illustrated in FIGS. 1A, 1, 2, and 4 described above, the stopper is attracted to and held by the electromagnet in the stopper holding member and assumes the normal arrangement posture. The state is shown. In any of these devices, when the information is received by the earthquake prediction information device 5, the current flowing through the electromagnet is automatically cut off in the current operation device 4 or the direction of the current is switched. As a result, the stopper that has been normally placed by being attracted to the stopper holding member is released from the holding force of the stopper holding member, is inclined in a predetermined direction, and is received by the receiving portion to have a fall prevention posture. Take.

At this time, it is desirable that a guide mechanism is further provided in order to smoothly and reliably operate the stopper from the normal installation posture to the fall prevention posture. More specifically, when the stopper is released from the holding force of the stopper holding member, the guide mechanism used in the present invention operates the stopper in a predetermined direction from the normal installation posture to prevent the fall as designed. It means a mechanism that can guide the inclination direction of the stopper so that

As the above-mentioned guide mechanism, for example, the auxiliary member 6 described above is used such that only a predetermined inclination direction of the stopper is released and the side surface portion can be supported so that the stopper does not fall in any direction other than the inclination direction. be able to.

As another embodiment, when the spring body is incorporated, like the fitting 9, the spring body supports one end of the stopper when it is released from the holding force of the stopper holding member, and is inclined so as to incline in a predetermined direction. You may give power.

As shown in FIG. 3B described above as another embodiment, a groove that connects the stopper 101 in a normal position to a drop-preventing position is provided in advance on the shelf 101, while a protrusion that fits in the groove is provided. As in the fitting structure formed by providing the stopper, the stopper released from the holding force of the stopper holding member may be smoothly guided to the stopper receiving portion.

Furthermore, as another guide mechanism, as shown in FIGS. 5A and 5B, a mode in which the spring body 24 is sandwiched between the stopper 22 and the stopper holding member 23 can be adopted. 5A, when one end of the spring body 24 is fixed to either the stopper 22 or the stopper holding member 23, and the stopper 22 is held by the stopper holding member 23, the spring body 24 assumes the normal arrangement posture. The strain energy is stored by the force attracted by the electromagnets in the stopper 22 and the stopper holding member 23 and is sandwiched between the two. Then, as shown in FIG. 5B, when the stopper 22 is released from the holding force of the stopper holding member 23, the strain energy of the spring body 24 is also released, and the spring body 24 extends as if the stopper 22 is pushed out. 22 is pushed in substantially the same direction as the direction in which the spring body 24 extends. Accordingly, by arranging the expansion and contraction direction of the spring body 24 so as to align with the predetermined inclination direction of the stopper 22, the stopper 22 is guided to incline in the predetermined direction when the holding force of the stopper holding member 23 is released. Can do. The inclined stopper 22 is received by the receiving portion 7, and the pallet 107 stored in the shelf 101 can be prevented from sliding forward from the paper surface and falling from the lower surface of the shelf opening frame 102.
In the present invention shown in FIGS. 5A and 5B, the cord, the current operation device, and the earthquake information receiving device are omitted. The same applies to FIGS. 6, 7A, 7B, and 7C shown below.

As shown in FIG. 6 as yet another guide mechanism, an inclination 34 is provided on the bottom surface of the stopper 32 in the shelf 101, which is on the shelf bottom surface 104 and stands up along the shelf side surface 103 and assumes the normal arrangement posture. It may be done. More specifically, when the stopper 32 is released from the holding force of the stopper holding member 33, an inclination 34 is provided on the bottom surface of the stopper 32 so that the stopper 32 is inclined in a desired inclination direction. You may comprise a guide mechanism by adjusting the gravity center position in a posture.

Moreover, another example provided with the spring body pinched | interposed between a stopper and a stopper holding member as a guide mechanism is shown to FIG. 7A, 7B, 7C. FIG. 7A shows a shelf 101 in which an auxiliary structure portion 55 having a rectangular cross section composed of a side surface portion and a bottom surface portion is provided on the lower surface of the shelf opening frame 102. A pallet 107 is stored as a storage item.
7B is a cross-sectional view taken along line AA in FIG. 7A. Inside the auxiliary structure 55, a stopper holding member 53 is placed on the inner bottom surface, and the stopper 52 disposed above the auxiliary structure portion 55 is attracted by the holding force of the stopper holding member 53 and assumes a normal arrangement posture. . A spring body 54 is sandwiched between the stopper 52 and the stopper holding member 53 in a state where strain energy is stored. The upper surface of the auxiliary structure portion 55 and the upper surface of the stopper 52 taking the normal arrangement posture are positioned substantially equal to or lower than the shelf bottom surface 104 so as not to obstruct the loading and unloading of the storage items in the shelf at the normal time. Preferably there is.
In FIG. 7C, when the current flowing through the stopper holding member 53 is cut or the direction of the current is switched, the holding force for attracting the stopper 52 disappears, and the spring body 54 is extended. A state in which the spring body 54 is pushed up so as to be higher than the bottom of the shelf to take a fall prevention posture is shown. That is, by ensuring that the upper surface of the stopper 52 is higher than the shelf bottom surface 104, when the pallet 107 stored in the shelf slides to the front of the shelf, it collides with the stopper 52 and slides further to the front. As a result, the pallet 107 is prevented from falling off the shelf 101.
The various guide mechanisms described above may be implemented alone in the storage shelf fall prevention device of the present invention, or may be implemented in combination with a plurality of guide mechanisms. The selected guide mechanism can be appropriately selected or combined in accordance with each aspect of the storage shelf fall prevention device of the present invention.

Next, the receiving part in this invention is demonstrated. In the present invention, when the stopper is released from the holding force of the stopper holding member and takes the fall prevention posture, the stopper receives the stopper to maintain the fall prevention posture, and the posture is also when the stored item contacts the stopper. It is a member for making it possible to maintain.

Here, the fall prevention posture is determined in consideration of the shape, size, and the like of the stored item that is the subject of fall prevention. For example, when the article to be prevented from falling is a pallet that is housed in a shelf, as shown in FIG. 1 or FIG. 2, a position that can contact the side surface of the pallet, that is, a slightly higher position from the bottom surface inside the shelf opening frame In addition, it is preferable that the stopper takes a fall prevention posture so that the stopper lies parallel to the inner bottom surface of the shelf opening frame. As another example, when the present invention is implemented for the purpose of preventing the fall of stored items such as books having a certain height, the stopper is a shelf at an arbitrary height as shown in FIG. It is preferable to take a fall prevention posture so as to extend between both side surfaces of the opening frame 102.

However, this invention is not limited to the aspect provided with the said receiving part. The stopper is not necessarily required as long as the stopper can maintain the fall prevention posture and prevent the intended storage item from dropping. For example, a stopper that is shallower than the width of the stopper in advance on the bottom of the shelf and closer to the shelf opening frame, and has a groove that is about the length of the stopper, and is released from the holding force of the stopper holding member. The fall prevention posture may be maintained by tilting and fitting into the groove.

The storage rack fall prevention device according to the present invention is configured such that, in a state in which the stopper is in the fall prevention posture, the side of the stopper facing the inside of the shelf (hereinafter, also referred to as “stored article abutting surface”) is stored in the shelf. This prevents the stored items from falling from the shelf when they come into contact with each other. Therefore, if the stored item moves violently in the shelf due to the earthquake vibration, the attacking force with the stored item contact surface increases, and the stored item may be damaged.
Therefore, in order to solve the above-mentioned concern, a cushioning material may be provided on at least a part of the stored item contact surface of the stopper.

In addition, as shown in FIGS. 1 and 2, when the stopper receiving portion is provided on the bottom surface of the shelf opening frame, in a mode in which the bottom surface of the stopper that takes the fall prevention posture and the bottom surface of the shelf are close to each other, the space between the stopper and the shelf There is a risk of fingers being caught in
Therefore, a shock-absorbing material may be provided on at least a part of the bottom surface of the stopper so that even if a finger or the like is caught, it will not be important.

As the buffer material, a sheet formed of a material capable of absorbing impact force can be used. It can be provided by laminating and adhering to at least a part of the stored item abutting surface or the bottom surface of the stopper, and it is more effective to provide it on substantially the entire surface of the stored item contact surface or substantially the bottom surface of the stopper.
The thickness of the sheet laminated as the cushioning material can be appropriately determined depending on the material constituting the cushioning material and its elastic force. The elastic force can be appropriately determined in consideration of the material of the stored item.

Specific examples of the elastic sheet include a foam sheet, a rubber sheet, leather, cloth, nonwoven fabric, and a gas-filled sheet for packaging.
More specifically, it is effective to use a polystyrene resin foam sheet, a polyethylene resin foam sheet, a foam sheet composed of a polypropylene resin foam sheet, a damping rubber sheet having vibration absorption, etc. As described above, the impact between the stored item and the stored item contact surface can be alleviated only by laminating cloth, leather, or the like.

Next, the storage shelf fall prevention system of the present invention will be described.
The storage shelf fall prevention system of the present invention comprises a stopper holding means for attracting and holding the magnetic body portion of the stopper provided with a magnetic body by passing an electric current through a stopper holding member including an electromagnet, and further includes a current operation means. The system that enables the stopper to be operated to a predetermined position by cutting or switching the current flowing through the electromagnet, wherein the stopper operating means is started by the current operating means. Have

FIG. 8 shows one embodiment of the system of the present invention.
The system 51 of the present invention has a stopper that attracts and holds the stopper provided with the magnetic body to the stopper holding member provided with the electromagnet when the electromagnet 48 and the magnetic body 49 through which current flows normally attract each other by magnetic force. The holding means is provided, whereby the stopper is normally held in the normally disposed posture.

On the other hand, when information indicating an earthquake sign is generated, the system operates as follows.
That is, a plurality of sensors 41 installed in various places detect P waves, which are the initial vibrations of an earthquake, and this is transmitted to an analysis station 42 such as the Japan Meteorological Agency. Communicated. Then, the P wave generation information is uplinked from the ground station 44 and transmitted to the satellite station 45. The satellite station 45 downlinks the P wave generation information to the earthquake prediction information receiving device 46 which is a terminal, and the earthquake prediction information receiving device 46 receives the P wave generation information (receiving means for receiving earthquake prediction information) ). Next, the earthquake prediction information receiving device 46 that has received the P wave generation information instructs the current operating device 47 to cut the current or switch the current, and the current operating device 47 that has received the instruction cuts the current flowing through the electromagnet 48. Alternatively, a reverse current opposite to the current that has flowed until then is passed (current operation means). As a result, the magnetic body 49 attracted to and held by the electromagnet 48 is released from the holding force of the electromagnet 48, and the magnetic body The stopper provided with 49 is operated to a predetermined position (stopper operating means), and the stopper is set to the fall prevention posture.

Here, it is known that the propagation speed of the P wave, which is the initial ground motion of the earthquake, is 6-8 km / sec, while the propagation speed of the S wave, which is the main motion of the subsequent earthquake, is 3 to 8. It is known to be 5 km / sec. Therefore, the time from when the sensor 41 senses the P wave until the current of the electromagnet 48 is operated and the magnetic body 49 is released from the holding of the electromagnet 48 is from the S wave generation point to the place where the present system is implemented. If the distance is shorter than the time of propagation of the S wave, the stopper actuating means can be implemented before the main movement occurs.

For example, in the case of the Meteorological Agency P-wave sensing system and the information transmission system using satellite communications shown in FIG. 8, the time required for the P-wave sensing information to reach the earthquake prediction information receiving device can be approximately 7 to 8 seconds. In addition, it is preferable that the time until the stopper actuating means is implemented in response to this is short, but generally 2 to 3 seconds, and more preferably 1 to 1.5 seconds. Therefore, the time for the S wave to reach the target area from the epicenter varies depending on the distance between the epicenter and the target area, but in general, it takes several seconds to several tens of seconds before the S wave arrives. It is possible to end the implementation of the stopper actuating means.
According to this, before the large-scale earthquake that is the main motion due to the propagation of the S wave, the stopper will take the posture of preventing the fall by completing the fall prevention system and prevent the fall of the items stored on the shelf. It can be done reliably.

Although FIG. 8 has been described using the information transmission system 50 using satellite communication as a system capable of immediately transmitting earthquake prediction information, the information received by the receiving means in the system of the present invention is the information transmission system 50 described above. It is not limited to the information conveyed by.
As another information system, the seismic information detection and analysis station may use information other than information derived from the Japan Meteorological Agency, for example, the earthquake measurement net Hi-net of the National Research Institute for Earth Science and Disaster Prevention. Communication means for transmitting information distributed from the analysis station is not limited to satellite communication, but wireless communication such as infrared rays, visible rays, lasers, radio waves, optical communication using optical fibers, communication via the Internet, etc. Communication etc. can be used. The receiving means for receiving earthquake prediction information in the present invention is a device capable of receiving information transmitted by the various communication methods described above, and enables a current operation instruction from the received information.

In addition, when receiving the information received by the receiving means for receiving the earthquake prediction information and instructing the current operation means to perform a current operation, the current operation instruction is performed by selecting only the information indicating the seismic intensity above a certain level, When information indicating a seismic intensity lower than that is received, the current operation instruction can be not performed.
As another aspect, the receiving means can receive only information indicating a seismic intensity of a certain level or more.
By selecting earthquake prediction information according to the magnitude of the earthquake in this way, it is possible to eliminate in advance that the stopper will operate and take a posture to prevent falling until a small earthquake that does not require fall prevention occurs. I can. Once the stopper has been actuated, it must be reset so as to be held by the stopper holding means, so that the effort for resetting can be reduced by operating the stopper only when necessary.

As described above, in the fall prevention device or the fall prevention system of the present invention, the stopper takes a fall prevention posture several seconds before the occurrence of a large earthquake, so that a person in the surrounding area takes several seconds because the stopper has taken the fall prevention posture. You can know that a big earthquake will occur later. That is, as a secondary effect of the present invention, it is possible to exert a role as a large earthquake warning to surrounding people.

As mentioned above, although the specific aspect was demonstrated using drawing about the fall prevention apparatus and fall prevention system of this invention, in the range which does not deviate from the meaning of this invention, any description is changed and various storage shelves are used. Can be implemented.
For example, in a multi-stage storage shelf type warehouse, the present invention can be implemented for the purpose of preventing pallets stored in each shelf from falling from the front of the shelf, and storage in book shelves, product shelves, chemical shelves, etc. It can be implemented for prevention of falling of objects, prevention of falling of cars in a multistage parking lot, and the like.

(1A) is a perspective view showing one embodiment of the fall prevention device of the present invention for a storage shelf and showing that the stopper is in a normal position, and (1B) is the fall prevention device shown in 1A above. FIG. 3 is a front view showing that the stopper is in a fall prevention posture. It is a perspective view which shows one embodiment of the fall prevention apparatus for storage shelves of this invention. (3A) is a perspective view showing an embodiment of the storage rack fall prevention device of the present invention, and (3B) is an AA view of the storage shelf fall prevention device of the present invention shown in (3A). It is sectional drawing. It is a perspective view which shows one embodiment of the fall prevention apparatus for storage shelves of the storage shelf of this invention. (5A) and (5B) are perspective views showing an embodiment of the present invention in which a spring body is provided between a stopper and a stopper holding member in the storage shelf fall prevention device of the present invention. It is a fragmentary sectional view which shows one embodiment using the stopper by which the bottom was inclined in the fall prevention apparatus for storage shelves of this invention. (7A) is a perspective view showing still another embodiment of the present invention in which a spring body is provided between the stopper and the stopper holding member in the storage shelf fall prevention device of the present invention, (7B) 7A is a cross-sectional view taken along the line AA in FIG. 7A, and is a cross-sectional view taken along the line AA when the stopper is in the fall prevention posture in the apparatus illustrated in FIG. 7A. It is explanatory drawing explaining the fall prevention system for storage shelves of this invention.

Explanation of symbols

1, 1a, 1b, 1c Fall prevention device 2, 2 ′, 22, 32, 52 Stopper 3, 3 ′, 3 ″, 23, 33, 53 Stopper holding member 4 Current operating device 5 Earthquake prediction information receiving device 6 Auxiliary Member 7, 7 ', 7''Stopper receiving part 8 Code 9 (Spring body type fastener)
11 (convex)
24, 54 Spring body 34 Inclined bottom surface 55 Auxiliary structure

Claims (7)

A stopper having at least a magnetic body,
A stopper holding member having an electromagnet at least in part;
A receiving device for receiving earthquake prediction information;
A current operating device for cutting or switching a current flowing through the electromagnet based on information received by the receiving device; and
The stopper holding member is a storage shelf fall prevention device provided at an arbitrary location of the storage shelf,
While holding the stopper in the normal position by attracting the magnetic body in the stopper by the magnetic force of the electromagnet in the stopper holding member,
When the earthquake prediction information is received by the receiving device, the current operating device cuts off or switches the current flowing through the electromagnet based on the earthquake prediction information, thereby releasing the stopper from the magnetic force of the stopper holding member. A fall prevention device for storage shelves characterized by a fall prevention posture. The storage rack fall prevention device according to claim 1, further comprising a guide mechanism for guiding the stopper to a fall prevention posture when a current flowing through the electromagnet is cut or switched. The storage shelf fall prevention device according to claim 1 or 2, further comprising a stopper receiving portion for receiving the stopper and holding the fall prevention posture when the stopper takes the fall prevention posture. The storage rack fall prevention device according to any one of claims 1 to 3, wherein a buffer material is provided on at least a part of a side surface of the stopper. A spring body is provided between the stopper held in a normal position and a stopper holding member that holds the stopper in such a direction that the expansion and contraction direction is perpendicular to the stopper and the stopper holding member. 5. The storage shelf fall prevention device according to claim 1, wherein an elastic force of the spring body is smaller than a force with which an electromagnet in the stopper holding member attracts the stopper. Stopper holding means for attracting and holding the magnetic body portion of the stopper including the magnetic body by passing an electric current through a stopper holding member including the electromagnet;
Receiving means for receiving earthquake prediction information;
Current operation means for performing a current operation to cut or switch the current when receiving earthquake prediction information in the receiving means;
Stopper operating means for operating the stopper to a predetermined position by implementing the current operating means;
A fall prevention system for a storage shelf, comprising: The said receiving means consists of an information receiving part which receives earthquake prediction information, and an instruction | indication part which instruct | indicates to operate an electric current in the said current operation means based on this received information prediction information. Fall prevention system for storage racks.

Images