JP6163046B2 - Seismic-type article fall prevention device - Google Patents

Description

  The present invention relates to an anti-seismic article fall prevention device that can prevent an article such as a book placed on a shelf of an article storage shelf such as a book shelf from falling due to vibration such as an earthquake.

  As a conventional seismic-type article fall prevention device, for example, as disclosed in Patent Document 1, a horizontal member (horizontal reed portion) that is horizontally oriented along the shelf front surface and a horizontal member is urged upward An urging means for supporting, an engagement supporting portion for engaging and supporting against the urging means, and a seismic operation means such as a pendulum, and an engagement support mechanism when the seismic operation means senses vibration. In some cases, the horizontal member is moved to a predetermined position where it is possible to prevent the article from falling, and the article placed on the shelf can be prevented from falling (see, for example, Patent Document 1).

Japanese Patent No. 2826811 (page 3, FIG. 5)

  The seismic-sensing article fall prevention device described in Patent Document 1 disengages the engagement support portion that prevents the return of the shape of the winding spring at the time of earthquake sensing, and the horizontal member by the winding spring that is an urging means Is moved upward to prevent the article placed on the shelf from dropping.

  However, in such a seismic-sensing article fall prevention device, it is necessary to increase the spring force in order to achieve a quick and reliable movement of the horizontal member in response to a shake such as an earthquake. The resultant force (drag) will increase. In order to solve such frictional engagement force with strong drag, it is necessary to enlarge the pendulum, which is the seismic operation means, and the seismic response is slowed down by the increase in the seismic operation means such as the pendulum. Therefore, the fall prevention function against shaking is inferior.

  The present invention has been made paying attention to such a problem, and while ensuring a high movement force against the stopper member, it is possible to quickly operate with a high sensitivity to shaking such as an earthquake. The object is to provide a prevention device.

In order to solve the above problems, the seismic article falling prevention device of the present invention is
A stopper member provided so as to be able to ascend and descend between a predetermined position and an upper position that does not affect the loading and unloading of the article on the shelf in the vertical direction of the shelf, and to prevent the article on the shelf from falling at the predetermined position; ,
Seismic actuation means that reacts to the shaking of the shelf,
And restricting the movement of the stopper member in a predetermined direction, and having a support part that enables the release of the restriction,
The support portion supports the stopper member fixedly with respect to the vector of the moving force applied to the stopper member, and applies the moving force vector applied to the stopper member from different directions. The support portion is bent or refracted by the force of the seismic operation means.
According to this feature, the support portion is given to the stopper member by bending or refracting the support portion by the force of the seismic operation means applied from different directions to the vector of the moving force given to the stopper member. The moving force vector is divided in different directions, and the frictional engagement force is not used to restrict or release the stopper member, so that the seismic actuation means can be used regardless of the magnitude of the moving force applied to the stopper member. Force will work effectively in the loss of support function. Therefore, the stopper member can be quickly and accurately moved to a predetermined position while using a small seismic operation means sensitive to seismic reaction, and a high fall prevention effect can be achieved.

The support portion is formed by a winding spring that is arranged so that one end side is supported at a predetermined position and the other end side receives the moving force of the stopper member.
According to this feature, since the wire spring has a cylindrical shape, the moving force of the stopper member received at the other end of the winding spring can be stably supported with a wide cylindrical cross section, and the vector of the moving force On the other hand, the force applied from different directions is easily refracted because the winding spring is a wire, and loss of the support function due to the force of the seismic operation means can be easily obtained. Further, since the winding spring itself has a restoring force, the operation at the time of resetting becomes easy.

The winding spring is characterized in that when the stopper member is fixedly supported with respect to the vector of the moving force applied to the stopper member, the wires constituting the winding spring are in contact with each other in the vertical direction. Yes.
According to this feature, since the wire rod of the coil spring, which is a compression coil spring or a tension coil spring, forms a cylindrical shape without a gap, the moving force of the stopper member received at the other end side of the coil spring is stabilized over a wide cylinder cross section. Can be supported.

The stopper member is pivotally supported by a pivot so as to rotate in the vertical direction on the front side of the shelf, and the winding spring has a refracting portion of the winding spring protruding toward the rear of the shelf at the time of refraction. It is characterized by being arranged.
According to this feature, the refracting portion of the winding spring does not hinder the movement of the stopper member, and the stopper member can be reliably rotated.

The support part is connected by a connecting part so that at least two rod-like bodies can rotate relatively, and the connecting part is provided with a restriction position where relative rotation in one direction is restricted, The movement of the stopper member in a predetermined direction at the restriction position is restricted.
According to this feature, the rod-like body can be rotated in the other direction relative to the connecting portion by the force of the seismic operation means, so that the vector of the moving force applied to the stopper member is instantaneously different. The support function can be lost by dividing in the direction.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an article storage shelf including a seismic article fall prevention device according to a first embodiment. 1 is a perspective view of a seismic-sensing article fall prevention device in Embodiment 1. FIG. It is a fracture | rupture expansion side view which shows the operation standby state of the seismic-type article fall prevention apparatus in Example 1. FIG. (A) is the fracture | rupture expansion side view which shows a mode that the seismic-sensing action | operation means in Example 1 act | operated, and the seismic-sensing action | operation means contact | abutted the support part, (b) is a recumbent part to a predetermined position. It is a figure which shows the state which started rotation. It is a fracture | rupture expansion side view which shows the state which the recumbent part in Example 1 completed the rotation to a predetermined position. It is a figure which returns the seismic-type article fall prevention apparatus in Example 1 to an operation standby state, (a) is a figure which shows the state which pushed up the recumbent part upward, (b) is a figure which shows a recumbent part It is a figure which shows the state which returned to the release operation standby state. It is a fracture | rupture expansion side view which shows the modification of the seismic-type article | item fall prevention apparatus in Example 1. FIG. It is a fracture | rupture expansion side view of the seismic-type article fall prevention apparatus in Example 2. FIG. Similarly, it is the fracture | rupture expansion front view of the seismic-type article | item fall prevention apparatus in Example 2. FIG. (A) is a fracture | rupture expansion front view which shows the state which the seismic-sensing action | operation means in Example 2 act | operated, (b) is a figure which shows a mode that the seismic-sensing action | operation means contact | abutted to the support part. It is a fracture | rupture expansion side view which shows the state which the recumbent part in Example 2 completed the rotation to a predetermined position. (A) is a fracture | rupture expansion side view of the seismic-type article fall prevention apparatus in Example 3, (b) is a fracture | rupture expansion top view similarly. (A) is the fracture | rupture expansion front view which shows the state which the seismic-sensing action | operation means in Example 3 act | operated with respect to the shaking of the front-back direction, (b) is a seismic-sensing action means similarly with respect to the shaking of the left-right direction It is a fracture | rupture expansion top view which shows the state which operated. (A) is a fracture | rupture expansion side view of the seismic-sensing article fall prevention apparatus in Example 4, (b) is a fracture | rupture expansion side view which similarly shows the state which the recumbent part completed the rotation to a predetermined position. It is.

  EMBODIMENT OF THE INVENTION The form for implementing the seismic-type article | item fall prevention apparatus which concerns on this invention is demonstrated below based on an Example.

  The seismic-type article fall prevention device according to the first embodiment will be described with reference to FIGS. An article storage shelf 2 equipped with the seismic-type article fall prevention device (hereinafter referred to as a fall prevention device) 1 shown in FIG. 1 includes side plates 3 and 3 that are separated in the left-right direction, and side plates 3 and 3. The top plates 4 and 4 connecting the opposing surfaces of the upper end portions, and the upper and lower shelves 5 supported on the side surfaces of the side plates 3 and 3 facing each other. A plurality of books 15 are placed on the upper surface of the shelf board 5. As will be described later, the fall prevention device 1 is attached to both ends of the upper surface of the shelf plate 5 of each stage. In the present embodiment, the fall prevention device 1 is described as being attached to a bookcase. However, the present invention is not limited to this. For example, the fall prevention device 1 may be used by being attached to a fixture or the like for displaying commodities. Hereinafter, the description will be made with respect to the front view of the article storage shelf 2 as a vertical direction, a horizontal direction, and a front-rear direction.

  As shown in FIGS. 2 and 3, the fall prevention device 1 includes a pair of left and right supports 7, 7 having a substantially rectangular shape when viewed from the side, and a stopper member 6. The stopper member 6 includes both supports. 7 includes a pair of left and right arm portions 8 and 8 whose front end portions protrude from the inside, and a horizontal flange portion 9 whose left and right ends are fixed to opposite surfaces of the front end portions of both arm portions 8.

  Each of the left and right supports 7 includes a flat plate-like outer plate 7A and an inner plate 7B facing the same size, and a plurality of spacers 7 serving as spacers projecting on the surface of the inner plate 7B facing the outer plate 7A. The opposite face of the outer plate 7A is brought into contact with the inner end of the boss shaft 12, and a plurality of countersunk screws 13, 13,... Inserted from the outside of the outer plate 7A at positions facing the boss shafts 12, 12,. The outer plate 7A and the inner plate 7B are coupled to each other so that a required space is formed between the opposing surfaces by screwing into a female screw hole (not shown) provided in each boss shaft 12. ing.

  Various members for raising and lowering the recumbent part 9 are incorporated in the supports 7 and 7. In the following description, the structure of the support 7 on the right side of the screen in FIG. 2 will be described, and the description of the other support 7 will be omitted.

  As shown in FIG. 3, the arm portion 8 described above is disposed slightly above the center in the vertical direction of the support body 7, and the rear end portion 8 a is pivotally supported by the pivot 16 with respect to the inner plate 7 </ b> B. The pivot 16 can be pivoted in the vertical direction.

  The inner plate 7B has a substantially L-shaped bent piece 14 fixed to the lower side of the pivot 16 that pivotally supports the arm portion 8, and is supported by the bent piece 14 and the central lower end portion 8b of the arm portion 8. A winding spring 20 as a part is arranged, and the lower end of the winding spring 20 is fixed to the approximate center of the upper surface 14 a of the bent piece 14 by a bolt 21. Further, since the wire forming the winding spring 20 forms a cylindrical shape without a gap, the load (moving force vector X) of the stopper member received on the central lower end 8b side of the arm portion 8 of the winding spring 20 is wide. It is designed to be able to stably support the cylinder cross section.

  In other words, the arm portion 8 has the central lower end portion 8 b as a load point and is supported by the upper surface 14 a of the bending piece 14 via the winding spring 20. Further, when the load point (center lower end portion 8b) of the arm portion 8 and the bolt 21 on the upper surface 14a of the bent piece are arranged on the same vertical line, the load (movement) of the stopper member 6 when the support body 7 is in a horizontal state. The force vector X) is supported in a balanced manner by the bent piece 14 via the winding spring 20.

  Further, a pendulum member 30 that is a seismic operation means is pivotally supported between the load point of the stopper member 6 and the rear end 8 a of the arm portion 8 pivotally supported by the pivot 16. The pendulum member 30 is composed of a rod-shaped body 31 and a weight 32 fixed to the lower end thereof, and the upper end of the rod-shaped body 31 is supported in the front-rear direction Y with a movable portion 33 pivotally supported by the arm portion 8 as a fulcrum. And normally hangs vertically by its own weight.

  Next, the operation and usage of the fall prevention device 1 of the above embodiment will be described with reference to FIGS. When the article storage shelf 2 vibrates in the front-rear direction due to an earthquake or the like, the weight 32 is swung in the front-rear direction Y, and the weight 32 is moved laterally in the center of the winding spring 20 as shown in FIG. collide. Part of the winding spring 20 is refracted and deformed by the collision of the weight 32, and the vector X of the moving force of the stopper member 6 is divided in different directions. Thereby, the support function by the winding spring 20 which is a support part is lost. Thus, the stopper member 6 that has lost the supporting force by the winding spring 20 is rotated by its own weight with the pivot 16 as a fulcrum, and the recumbent portion 9 is rotated downward.

  As described above, the seismic-type article fall prevention device 1 according to the present embodiment is such that the winding spring 20 collides with the pendulum member 30 applied from a different direction Y with respect to the vector X of the moving force applied to the stopper member 6. The moving force vector X applied to the stopper member 6 is divided in different directions, and the frictional engagement force is not used to restrict or release the stopper member 6. Therefore, while the pendulum member 30 is thin and small to make the seismic response sensitive, the supports 7 and 7 are thin and small so as not to compress the storage capacity of the books 15 in the article storage shelf 2 as much as possible. The support function by 20 can be reliably lost. Furthermore, even if the weight of the stopper member 6 is increased so that the recumbent portion 9 is moved more quickly to a predetermined position, the force of the pendulum member 30 effectively acts on the loss of the support function by the winding spring 20. High fall prevention effect can be achieved.

  As shown in FIG. 5, the front upper boss shaft 12 of the support 7 functions as a restricting portion that is restricted by the arm portion 8 that rotates downward, and this is restricted. According to the above, the recumbent rib portion 9 is stabilized at a predetermined height lower than the upper end of the book 15, and the book 15 can be prevented from jumping forward due to shaking such as an earthquake.

  Further, as shown in FIGS. 4B and 5, as the stopper member 6 rotates, the central lower end portion 8 b of the arm portion 8 acts to pull the upper portion of the tension spring 20 backward, so that the arm The refracted portion of the winding spring 20 refracted by the rotation of the portion 8 comes to protrude rearward. Further, as shown in FIG. 5, since the pivot 16 that pivotally supports the arm portion 8 is disposed above the upper surface 14a of the bent piece 14, the refracted portion more easily protrudes rearward. The refraction part does not hinder the rotation of the arm part 8, and the recumbent part 9 can be rotated quickly and stably to a predetermined height that prevents the book 15 from jumping forward in response to shaking such as an earthquake. Can be moved.

  Next, the case where the fall prevention device 1 is returned to the operation standby state will be described with reference to FIG. As shown in FIGS. 6 (a) and 6 (b), the administrator of the fall prevention device 1 temporarily raises the horizontal flange 9 in a state of being lowered downward after operation to a predetermined height at which the winding spring 20 extends. Push up and release. The winding spring 20 once stretches and then returns to its natural linear shape by its own restoring force, and the stopper member 6 is supported by the upper surface 14 a of the bending piece 14 via the winding spring 20. When the coil spring 20 is extended and then returns to its natural state, the coil spring 20 acts so as to relatively pull the load point of the stopper member 6 (lower end 8b at the center of the arm 8) and the upper surface 14a of the bent piece by returning to its own shape. Then, the load point of the stopper member 6 and the bolt 21 on the upper surface 14a of the bent piece can be guided so as to be positioned on the same vertical line, and the operation standby state in which the load of the stopper member 6 is stabilized can be restored.

  In addition, as shown in FIG. 3, in the standby state, the weight 32 of the pendulum member 30 is disposed so as to be slightly separated from the winding spring 20. It is possible to prevent the malfunction of the fall prevention device 1 due to the above.

  In addition, the winding spring 20 is in a state in which the load of the arm portion 8 is received, that is, in a state where the wire forming the winding spring 20 is spirally stacked, the vertical load (moving force vector X) of the stopper member 6. ) Is transmitted to and supported by the bending piece 14 through each winding of the wire, so that the vertical load (moving force) of the stopper member 6 can be obtained without using a winding spring formed of a thick wire. The vector X) can be stably supported, and the support function by the winding spring 20 can be lost without relying on the collision force of the weight 32 described above, and the manufacturing cost of the winding spring can be reduced.

  In addition, since the winding spring 20 is a spiral spring, the cylinder formed by the winding spring 20 has a substantially circular cross section, and has a similar refraction function depending on the force from any direction. Easy. In the above-described embodiment, the winding spring 20 has been described in a mode of using a spring in which the wire members constituting the winding spring 20 are in contact with each other in the vertical direction while receiving the load of the arm portion 8. However, the present invention is not limited to this, and a spring that separates the wires constituting the winding spring 20 while receiving the load of the arm portion 8 may be used. Further, the winding spring 20 is not limited to a spiral spring, and may be formed by winding a wire rod into a triangular shape such as a triangle or a square. The winding spring 20 may be either a compression coil spring or a tension coil spring.

  Furthermore, the support portion that supports the stopper member 6 supports the stopper member 6 in a fixed manner with respect to the moving force vector X applied to the stopper member 6 and is different from the moving force vector X. The structure is not limited to the above-described winding spring 20 as long as the moving force vector X is divided in different directions by the force applied from the direction. For example, as shown in FIG. 7A, the upper end of the upper rod-like body 40 is pivotally connected to the arm portion 8, and the lower end of the lower rod-like body 41 is pivotally connected to the bent piece 14. At the same time, the upper and lower rod-like bodies 40 and 41 may be supported by using a structure in which the upper and lower rod-like bodies 40 and 41 are connected to each other so as to be relatively rotatable. The lower rod-shaped body 41 has a protrusion 41a at a contact position with the upper rod-shaped body 40 in the rotation direction, and according to this, the upper rod-shaped body 40 abuts on the protrusion 41a, The rod-like bodies 40 and 41 function so as to be restricted from rotating in one direction, and the contact portion between the protrusion 41a and the upper plate 40 is a load (moving force) of the arm portion 8 and the reed portion 9. To support the vector X).

  When the article storage shelf 2 vibrates in the front-rear direction due to an earthquake or the like, as shown in FIG. 7B, the weight 32 is swung in the front-rear direction Y, and the weight 32 is moved from the rear to the upper and lower plate bodies 40, 41. Collision near the connection point. The abutment of the weight 32 causes the upper and lower plates 40, 41 to rotate relative to each other about the shaft core 42, so that the support portion is refracted and the vector X of the moving force of the stopper member 6 is set in different directions. Each of them is momentarily divided, and the support function by the winding spring 20 as a support portion is lost. Thereby, the recumbent part 9 is rotated downward by the dead weight of the stopper member 6, and moves to a position that prevents the article from falling. The plate bodies 40 and 41 are not limited to the structure that rotates relative to the shaft core 42, but the shaft core 42 is omitted, and the plates 40 and 41 are refracted at the time of earthquake sensing so that the plate bodies 40 and 41 are completely separated from each other. Thus, the configuration may be such that the vector X of the moving force of the stopper member 6 is divided in different directions. Furthermore, the support portion is not limited to a coil spring or a plate (rod-like body), and an elastic body such as rubber may be used.

  Next, the seismic-type article fall prevention device according to the second embodiment will be described with reference to FIGS. In addition, the description which overlaps with the same structure as the said Example is abbreviate | omitted.

  In the seismic article fall prevention device 10 shown in FIG. 8, a pendulum member 50 for rolling is added inside the support body 7. As shown in FIG. 9, the roll pendulum member 50 includes a plate body 51 whose upper end is pivotally supported by a bearing 54 provided on the inner surface side of the outer plate 7 </ b> A by the movable portion 53, and the plate body 51. It consists of a weight 52 fixed to the lower end. As shown in FIGS. 10A and 10B, the roll pendulum member 50 is rotatable in the left-right direction Z of the support 7 around the movable portion 53.

  As shown in FIG. 10A, when the article storage shelf 2 vibrates in the left-right direction in a front view due to an earthquake or the like, the weight 52 is swung in the left-right direction Z, and as shown in FIG. The weight 52 collides with the central portion of the winding spring 20, the winding of the wire member in the winding spring 20 collapses so as to be partially separated, the vector X of the moving force of the stopper member 6 is divided in different directions, and the support portion The support function by the winding spring 20 is lost. As shown in FIG. 11, the arm portion 8 that has lost the supporting force by the winding spring 20 rotates about the pivot 16 by its own weight as the stopper member 6, and accordingly, the horizontal flange portion 9 rotates downward. Moved. Thus, the seismic-sensing article fall prevention device 11 according to the present embodiment can operate the fall prevention function with high sensitivity to the shaking in the left-right direction Z in addition to the shaking in the front-rear direction Y described above.

  Next, a seismic article falling prevention apparatus according to the third embodiment will be described with reference to FIGS. In addition, the description which overlaps with the same structure as the said Example is abbreviate | omitted.

  In the seismic-sensing article fall prevention device 11 shown in FIG. 12A, the pendulum member 300 is suspended by the suspension member 55 with respect to the pivot 16 on which the arm portion 8 is pivotally supported, and the pendulum member 300 is also supported. A surrounding member 60 extending from the front is disposed so as to surround the vicinity of the front side and the left and right sides of the winding spring 20. The suspension support member 55 includes a first ring portion 56 that can rotate in the front-rear direction with respect to the pivot 16 and a second ring portion 57 that can rotate in the left-right direction with respect to the first ring portion 56. The pendulum member 300 can swing with respect to swinging in the longitudinal direction Y and the lateral direction Z in an earthquake or the like.

  As shown in FIG. 12B, the surrounding member 60 is formed by bending a rod-shaped body, and the front end 60a of the rod-shaped body is in the front-rear direction with respect to the winding spring 20, and the left and right portions 60b of the rod-shaped body. , 60c are spaced apart from each other by a predetermined distance in the left-right direction.

  When the article storage shelf 2 vibrates in the front-rear direction due to an earthquake or the like, the pendulum member 300 is swung in the front-rear direction Y, and the front end 60a of the surrounding member 60 is the winding spring 20 as shown in FIG. Colliding with the central portion, the winding of the winding spring 20 wire member is broken so as to be partially separated. Further, when the article storage shelf 2 vibrates left and right, the pendulum member 300 is swung in the left-right direction Z, and the left and right portions 60b and 60c of the surrounding member 60 are the center of the winding spring 20 as shown in FIG. It collides with the part and collapses so that the winding of the winding spring 20 wire member is partially separated. When the winding spring 20 collapses, the vector X of the moving force of the stopper member 6 is divided in different directions, and the support function by the winding spring 20 as a support portion is lost. Thus, the stopper member 6 that has lost the supporting force by the winding spring 20 is rotated by its own weight with the pivot 16 as a fulcrum, and accordingly, the horizontal flange 9 is rotated downward. As described above, the seismic-sensing article fall prevention device 11 according to the present embodiment can operate the fall prevention function for both the front-rear direction Y and the left-right direction Z shaking.

  Further, as shown in FIG. 13A, when there is a swing in the front-rear direction Y, the movement direction of the center of gravity due to the rotation of the book 15 accompanying the movement of the article storage shelf 2 and the swinging direction of the pendulum member 300. Matches. According to this, the front end 60a of the surrounding member 60 collides with the central portion of the winding spring 20 at the timing when the pendulum member 300 and the surrounding member 60 are rotated rearward, and the fall preventing function is activated. Therefore, the recumbent part 9 is rotated downward at the timing when the book 15 is tilted rearward, so that the revolving of the recumbent part 9 can be prevented from being obstructed by the book 15 itself, an earthquake, etc. The fall prevention function can be actuated quickly and stably to a predetermined height with respect to the shaking.

  Next, a seismic-sensing article fall prevention apparatus according to Embodiment 4 will be described with reference to FIG. In addition, the description which overlaps with the same structure as the said Example is abbreviate | omitted.

  In the above-described three embodiments, the recumbent portion is configured to rotate so as to descend downward from above when the fall prevention function is operated. As shown in FIG. By moving the rear side of the pivot 16 ′ with the winding spring 20, the recumbent portion 9 ′ may be operated so as to rotate upward from below when the fall prevention function is activated. .

  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 modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the three embodiments described above, the description has been made using the pendulum member provided with a weight in the seismic operation means, but the configuration has a seismic function and a function of dividing the vector X of the moving force of the stopper member 6. If there is, the structure is not limited to the pendulum member. For example, a bottom surface may be provided in the support body 7 and the weight may be directly moved on the bottom surface. Thus, the vector X of the moving force of the stopper member 6 in the support portion may be divided.

  Further, the moving force of the stopper member 6 is not limited to the load of the stopper member 6 but may be a biasing means such as a spring.

  Further, the recumbent portion that prevents the article from falling is not limited to a rod-shaped member, and may be a cover member that covers the front surface of each shelf 5 when the fall prevention function is activated, for example. Furthermore, the predetermined position (height etc.) after the operation of the recumbent part may be adjustable according to the shape such as the height of the article.

DESCRIPTION OF SYMBOLS 1,10,11 Seismic-type article fall prevention apparatus 2 Article storage shelf 3, 3 Side plate 4 Top plate 5 Shelf 6 Stopper member 7, 7 Support body 7A Outer plate 7B Inner plate 8 Arm part 8b Arm part center lower end part 9 Horizontal Hook 12 Boss shaft 14 Bending piece 14a Bending piece upper surface 15 Book 16 Pivot 20 Winding spring (supporting portion)
30,300 Pendulum member (Seismic operation means)
32 Weight 33 Movable part 40, 41 Plate body (bar-shaped body)
41a Protrusion 50 Pendulum member for rolling 55 Suspension support member 60 Enclosure member X Vector of moving force Y Force applied in the front-rear direction Z Force applied in the left-right direction

Claims (5)

A stopper member provided so as to be able to ascend and descend between a predetermined position and an upper position that does not affect the loading and unloading of the article on the shelf in the vertical direction of the shelf, and to prevent the article on the shelf from falling at the predetermined position; ,
Seismic actuation means that reacts to the shaking of the shelf,
And restricting the movement of the stopper member in a predetermined direction, and having a support part that enables the release of the restriction,
The support portion supports the stopper member fixedly with respect to the vector of the moving force applied to the stopper member, and applies the moving force vector applied to the stopper member from different directions. An anti-seismic article fall prevention device, wherein the support portion is bent or refracted by the force of an anti-seismic actuating means.   2. The seismic article fall prevention according to claim 1, wherein the support part is composed of a winding spring having one end side supported at a predetermined position and the other end side receiving a moving force of the stopper member. apparatus.   In the winding spring, when the stopper member is fixedly supported with respect to a vector of a moving force applied to the stopper member, the wire members constituting the winding spring are in contact with each other in the vertical direction. The seismic-type article fall prevention device according to claim 2.   The stopper member is pivotally supported by a pivot so as to rotate in the vertical direction on the front side of the shelf, and the winding spring has a refracting portion of the winding spring protruding toward the rear of the shelf at the time of refraction. It arrange | positions so that it may do. The seismic-type article | item fall prevention apparatus of Claim 2 or 3 characterized by the above-mentioned.   The support part is connected by a connecting part so that at least two rod-like bodies can rotate relatively, and the connecting part is provided with a restriction position where relative rotation in one direction is restricted, 2. The seismic-sensing article fall prevention device according to claim 1, wherein movement of the stopper member in a predetermined direction is restricted at the restriction position.

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