JP6194219B2 - 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-sensing article fall prevention device, for example, as disclosed in Patent Document 1, a horizontal member (a recumbent portion) oriented horizontally along a shelf front surface and a horizontal member can be freely engaged and disengaged. An engagement support mechanism for supporting and a seismic operation means such as a pendulum are provided, and when the seismic operation means reacts to vibration, the engagement of the engagement support mechanism is released to prevent the horizontal member from falling. There is one that can be moved down to a position to prevent an article placed on a shelf from falling (for example, see Patent Document 1).

JP-A-9-173170 (3rd page, FIG. 6)

  However, in such a seismic-sensing article fall prevention device, the seismic-sensing actuating means rotates forward due to the swinging movement of the article storage shelf, and the tip portion of the seismic sensing actuating means. And the engagement support mechanism are disengaged and the horizontal member is rotated downward. For this reason, when a strong shake that moves the article storage shelf in the forward direction due to a shake at the initial motion time due to an earthquake or the like, the engagement between the seismic operation means and the engagement support mechanism is not released. That is, depending on the shaking direction at the initial operation time, the horizontal member may not move in time, and the article may not be prevented from falling.

  The present invention has been made paying attention to such problems, and an object thereof is to provide a seismic-sensing article fall prevention device that can reliably prevent the fall of an article regardless of the direction of shaking such as an earthquake. Yes.

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 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; ,
The stopper member is fixedly supported with respect to the vector of the moving force applied to the stopper member, and the movement of the stopper member is restricted, and the restriction is released by its bending or refraction. A support part;
A feeling provided with a seismic moving part that moves in the front-rear direction of the shelf in response to shaking of the shelf, and a restriction releasing part that moves back and forth in conjunction with the seismic moving part and releases the restriction in the support part. Seismic actuation means,
The restriction release portion is disposed before and after the support portion, and functions to bend or refract the support portion with a predetermined amount or more of movement of the restriction release portion.
According to this feature, if the swing is greater than or equal to a predetermined amount regardless of the direction of shaking due to an earthquake or the like, the restriction release portion arranged before and after the support portion may exert force on either the front side or the rear side of the support portion. In addition, the structure that functions to bend or refract the support part and can release the restriction of the stopper member by the support part can reliably prevent the article from falling regardless of the shaking direction such as an earthquake. it can.

The seismic movement unit is a pendulum member disposed on the front side and the rear side with respect to the support unit, and each pendulum member has the restriction release unit.
According to this feature, since the vibration period, weight of the weight, position of the rotating shaft, and the like of both pendulums arranged on the front side and the rear side can be individually set, the degree of freedom of the restriction release condition is increased.

The collision part of each regulation release part with respect to the said support part is set to the position which shifted | deviated to the length direction of the said support part.
According to this feature, since the locations where the two restriction release portions collide with the support portion are different at the time of swinging, the restriction release portions do not collide with each other, thereby preventing malfunction.

The seismic motion moving part is a single pendulum in which restriction release parts are respectively arranged on the front side and the rear side with respect to the support part.
According to this feature, the timings at which the two restriction release parts collide with the support part at the time of swinging are different, and not only can the collisions between the restriction release parts be prevented but also the structure can be simplified.

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. (A) is the fracture | rupture expansion side view which shows the operation standby state of the seismic-type article | item fall prevention apparatus in Example 1, (b) is a fracture | rupture expansion front view similarly. (A) is a fracture | rupture expansion side view which shows a mode that the seismic-sensing action | operation means in Example 1 act | operated and the front seismic-sensing action means contact | abutted the front side of the support part, (b) It is a figure which shows the state which the part started rotation to a predetermined position. 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. (A) in Example 1 is a fracture | rupture expansion side view which shows a mode that the seismic sensing operation means act | operated and the back seismic sensing operation means collided with the back side of the support part, (b) is a recumbent part. It is a figure which shows the state which completed the rotation to a predetermined position. (A) in Example 1 is a fracture | rupture expansion side view which shows the state which the recumbent part completed the rotation to a predetermined position, (b) pushes up a recumbent part upward from the state of (a). It is a fracture expanded side view showing the state returned to the operation standby state. It is a fracture | rupture expansion side view which shows the operation standby state of the seismic-type article | item fall prevention apparatus in Example 2. FIG. (A) is a fracture | rupture expansion side view which shows the aspect when an article storage shelf vibrates ahead from the state of FIG. 8, Similarly (b) vibrates an article storage shelf backward from the state of FIG. It is a fracture | rupture expansion side view which shows the mode in the case of having carried out. It is a fracture | rupture expansion side view which shows the state which the vibration sensing operation means before and behind in Example 2 rock | fluctuated toward the support part mutually. It is a fracture | rupture expansion side view which shows the modification of a pendulum member. (A) is a fracture | rupture expansion side view which shows the aspect when the article | item storage shelf in the modification of a pendulum member vibrates ahead, (b) is the article | item storage shelf in the modification of a pendulum member similarly back side It is a fracture | rupture enlarged side view which shows the aspect at the time of vibrating. (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 a fracture | rupture expansion side view which shows the state which the seismic-sensing action | operation means in Example 3 rock | fluctuated backward, (b) shows the state which the quake-sensing action | operation means rock | fluctuated forward similarly. FIG. It is a fracture | rupture expansion side view which shows the modification of an surrounding member.

  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. 1 to 9. An article storage shelf (hereinafter referred to as a shelf) 2 equipped with a seismic-type article fall prevention device (hereinafter referred to as a fall prevention device) 1 of the present invention shown in FIG. 1 includes side plates 4A and 4A that are separated in the left-right direction, The top plates 4B and 4B connecting the opposing surfaces of the upper end portions of the side plates 4A and 4A, and the upper and lower shelf plates 5 supported on the side surfaces facing each other of the side plates 4A and 4A. A plurality of books 15 are placed on the upper surface of the shelf board 5 at each stage. 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, description will be made on the basis of the front view of the shelf 2 as up and down, left and right, and front and rear directions.

  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 that is opposed to each other with substantially the same size. The upper and lower ends of the outer plate 7A are bent inward to form an upper bent portion 11 and a lower bent portion 14 so as to function as spacers. The upper bent portion 11 and the lower bent portion 14 The outer plate 7A and the inner plate 7B are brought into contact with each other by bringing the opposing surfaces of the plate 7B into contact with each other and screwing a plurality of bolts, nuts 13, 13,... They are connected in such a way that a required space is formed between the facing surfaces.

  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. 3A, the above-described arm portion 8 is disposed slightly above the center of the support 7 in the vertical direction, and the rear end portion 8a is pivoted with respect to the outer plate 7A by the pivot 16. It is supported and can be rotated in the vertical direction with the pivot 16 as a fulcrum.

The inner plate 7B is provided with a winding spring 20 as a support portion that spans the lower bending portion 14 and the central lower end portion 8b of the arm portion 8, and the lower end of the winding spring 20 is bolted to the upper surface 14a of the lower bending portion 14. 21 is fixed. Further, in the state where the winding spring 20 is not stretched and is arranged on the vertical line, the wire forming the winding spring 20 forms a cylindrical shape without a gap, and therefore the central lower end 8b side of the arm portion 8 of the winding spring 20 is provided. The load (moving force vector X) of the stopper member received by the step can be stably supported with a wide cylindrical section.
That is, the arm portion 8 has the central lower end portion 8b as a load point and is supported on the upper surface 14a of the lower bent portion 14 via the winding spring 20. Further, when the load point of the arm portion 8 (the central lower end portion 8b) and the bolt 21 on the upper surface 14a of the lower bent piece are arranged on the same vertical line and the support body 7 is in a horizontal state, the load of the stopper member 6 ( The moving force vector X) is supported by the lower bent portion 14 through the winding spring 20 in a well-balanced manner.

  As shown in FIGS. 3A and 3B, pendulum members 30, 30 ′ serving as seismic moving parts are pivotally supported on the inner plate 7 </ b> B around the winding spring 20. The pendulum members 30 and 30 'are composed of a rod-shaped portion 31 and a weight portion 32 fixed to the lower end thereof. The upper end of the rod-shaped portion 31 is attached to shaft portions 33 and 33 fixed to the inner plate 7B. By being pivotally supported, the shaft portion 33 can be swung in the front-rear direction Y with the shaft portion 33 serving as a fulcrum, and it normally hangs vertically due to its own weight. The parts 33 and 33 constitute the seismic operation means 3. Note that the pendulum member 30 ′ has the same configuration as the pendulum member 30, and a description thereof will be omitted.

Next, the operation and usage of the fall prevention device 1 of the above embodiment will be described with reference to FIGS.
When the shelf 2 vibrates in the forward direction due to a predetermined shaking such as an earthquake, as shown in FIG. 4 (a), the book 15 falls down to the rear side with the lower corner portion 15B on the rear side as a center. Then, the pendulum members 30 and 30 ′ swing in the rearward direction in a synchronized state so that the weight portions 32 and 32 ′ of the pendulum members 30 and 30 ′ remain in place. Thereby, the restriction release portion 32 a of the pendulum member 30 disposed on the front side of the winding spring 20 collides with the front center portion of the winding spring 20.

  As shown in FIG. 4 (b), in the winding spring 20, a part of the winding spring 20 is refracted by the collision of the restriction release portion 32a, 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. As shown in FIG. 5, 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 serving as a fulcrum, and the horizontal flange 9 is rotated downward. The lower bent portion 14 functions as a restricting portion that is restricted by the arm portion 8 that is pivoted in the downward direction from being brought into contact. The book 15 is stable at a predetermined height, and the book 15 can be prevented from jumping forward due to shaking such as an earthquake.

  Further, as described above, when the swing that moves the shelf 2 is operated, the seismic operation means 3 is activated at the timing when the book 15 is moved backward from the predetermined position in the natural state, and the recumbent portion 9 is rotated downward, the recumbent portion 9 can be rotated in a state in which the book 15 does not exist on the rotation trajectory, and the recumbent portion 9 is difficult to contact the book 15. Thus, the book 15 can be prevented from falling.

  Further, when the shelf 2 vibrates backward, as shown in FIG. 6A, the book 15 falls down forward about the lower corner portion 15A on the front side, and the pendulum members 30, 30 The pendulum members 30 and 30 'swing forward so that the' weight portions 32 and 32 'remain in place. As a result, the weight portion 32 ′ of the pendulum member 30 ′ installed on the rear side of the winding spring 20 is swung forward, and the regulation release portion 32 a ′ collides with the rear center portion of the winding spring 20. Therefore, as shown in FIG. 6B, the supporting force by the winding spring 20 is lost, and the stopper member 6 is operated. Further, when the stopper member 6 is operated, the winding spring 20 is bent backward by the rotation of the arm portion 8, and the pendulum member 30 ′ is pushed back by the bending of the winding spring 20.

  In this way, if the swing is greater than or equal to a predetermined amount regardless of the direction of the swing due to an earthquake or the like, the restriction release portions 32a and 32a ′ disposed before and after the winding spring 20 are either on the front side or the rear side of the winding spring 20. Since it has a structure that acts to bend or refract the winding spring 20 by applying a force to the winding spring 20 and the restriction of the stopper member 6 by the winding spring 20 can be released, the book 15 or the like can be reliably obtained regardless of the direction of shaking such as an earthquake. Can be prevented from falling.

  Next, a 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. 7 (a) and 7 (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 a natural linear shape by its own restoring force, and the stopper member 6 is supported by the upper surface 14 a of the lower bent portion 14 via the winding spring 20. When the coil spring 20 returns to its natural state after being stretched, 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 lower bent piece are relatively attracted by its own shape recovery. By acting, it is possible to guide the load point of the stopper member 6 and the bolt 21 on the upper surface 14a of the lower bent piece so as to be positioned on the same vertical line, and to return to an operation standby state in which the load of the stopper member 6 is stable.

  Further, as shown in FIG. 3, in the standby state, the weight portion 32 of the pendulum member 30 and the winding spring 20 are arranged so as to be slightly separated from each other, so that the article such as the book 15 does not fall. It is possible to prevent the regulation release portion 32a or 32a ′ from colliding with the winding spring 20 due to a shock or the like, and to prevent the fall prevention device 1 from malfunctioning.

  In addition, since the wire spring 20 serving as a support portion of the stopper member 6 has a cylindrical shape, the coil spring 20 is resistant to a force applied from a different direction with respect to the vector X of the moving force applied to the stopper member 6. Since it is a wire rod, it is easily refracted. Therefore, when the book 15 does not exist on the turning track of the recumbent part 9, that is, when the weight part 32 moves in the rearward direction of the shelf 2, the stopper member 6 and the recumbent part 9 are immediately moved to move the article. Can be prevented from falling.

Further, since the pendulum members 30 and 30 ′ are respectively disposed on the front side and the rear side with respect to the winding spring 20, the vibration periods and weights of the weights of both the pendulums 30 and 30 ′ disposed on the front side and the rear side are provided. Since the position of the rotation axis can be individually set, the degree of freedom of the restriction release condition is increased.
For example, as described above, when the swing that moves the shelf 2 in the forward direction is applied, the restriction release portion 32a of the pendulum 30 collides with the winding spring 20, and the recumbent portion 9 is brought into contact with the book 15. Therefore, it is desirable that the seismic operation means 3 is operated at the timing of the shaking that is moved in the forward direction. Therefore, the distance between the restriction release portion 32 a ′ of the pendulum 30 ′ and the winding spring 20 is designed to be larger than the distance between the restriction release portion 32 a of the pendulum 30 and the winding spring 20. According to this, the restriction release portion 32a ′ collides with the winding spring 20 only when the shelf 2 is moved forward in the swing of the initial movement time and a large swing is applied that causes the book 15 to fall. In addition, it is possible to reliably prevent the book 15 from falling by rotating the recumbent portion 9 without making it contact the book 15 as much as possible.

  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.

  Next, a seismic article falling prevention apparatus 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.

  As shown in FIG. 8, the pendulum member 30 is fixed to the inner plate 7 </ b> B at a position where the arrangement position of the shaft portion 33 is slightly lower than the arrangement position of the above embodiment, and the pendulum member 30 ′ The arrangement position of the portion 33 ′ is fixed to the inner plate 7B at a position slightly higher than the arrangement position of the above embodiment. That is, the pendulum members 30 and 30 ′ are arranged such that the weight portions 32 and 32 ′ are shifted in the height direction.

  As shown in FIG. 9A, when the shelf 2 vibrates in the forward direction, the restriction release portion 32a of the pendulum member 30 collides with the lower front side of the winding spring 20, and FIG. As shown in b), when the shelf 2 vibrates backward, the restriction release portion 32a ′ of the pendulum member 30 ′ collides with the upper rear side of the winding spring 20.

  In addition, shaking such as an earthquake may swing not only back and forth but also randomly up and down or left and right. More than a predetermined amount of shaking that the restriction release portions 32 a and 32 a ′ collide with the winding spring 20 is applied to the shelf 2. When applied from various directions, the pendulum members 30 and 30 'may swing in different directions without synchronizing the swinging direction. For example, as shown in FIG. 10, the shelf 2 may receive vibrations of a predetermined level or more from various directions, and the weight portions 32 and 32 ′ of the pendulum members 30 and 30 ′ may swing toward the winding spring 20. is there. In this case, as described above, the pendulum members 30 and 30 ′ are arranged such that the weight portions 32 and 32 ′ are shifted in the height direction, so that the restriction release portion 32 a of the pendulum member 30 is the winding spring 20. And the restriction release portion 32a ′ of the pendulum member 30 ′ collides with the upper rear side of the winding spring 20. Therefore, the restriction release portions 32a and 32a 'do not collide with each other on both sides of the winding spring 20, and the pendulum members 30 and 30' do not interfere with each other, so that malfunction can be prevented.

  In the present embodiment, the embodiment using the pair of pendulum members 30 and 30 ′ having the same shape has been described. For example, the length of each rod-like portion is made different, and the swing radius of each pendulum member is set. May be changed to change the height position at which each of the restriction release portions 32 a and 32 a ′ collides with the winding spring 20.

  Furthermore, there are the following modifications of the seismic sensing means. As shown in FIG. 11, the pendulum member 301 that constitutes the seismic operation means 3 ′ includes a rod-shaped portion 311, 312 extending vertically at the front and rear of the winding spring 20, and a bridge portion 341 that is bridged at the upper end of the resin. It is integrally formed of materials such as metal. The rod-shaped portions 311 and 312 each have a predetermined weight and are horizontally balanced around the installation portion 341 as a rotation center. The rod-shaped portions 311 and 312 have restriction release portions 321 and 322 that collide with the front and rear of the winding spring 20, respectively. The installation portion 341 of the pendulum member 301 is pivotally supported by a shaft portion 81 that extends horizontally from directly above from the load point (central lower end portion 8b) of the arm portion 8.

  Since the above-described various parts are integrally formed, the pendulum member 301 is formed with rod-like portions 311 and 312 and weight portions when the pendulum member 301 is shaken, as shown in FIGS. 12 (a) and 12 (b). Since the shafts 81 and 322 are integrally swung in the front-rear direction with the shaft portion 81 as a fulcrum, the timings at which the two restriction release portions 321 and 322 collide with the winding spring 20 at the time of swinging are different. Not only can the collision between the restriction release portions 321 and 322 be prevented, but also the structure can be simplified.

  Next, the seismic-sensing article fall prevention device according to the third embodiment will be described with reference to FIGS. 13 and 14. 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 10 shown in FIG. 13 (a), the pendulum member 300 constituting the seismic sensing operation means 3 ″ is suspended by the suspension member 55 with respect to the pivot 16 on which the arm portion 8 is pivotally supported. A surrounding member 60 extending from the pendulum member 300 is disposed so as to surround the vicinity of the periphery of the winding spring 20. Further, the suspension supporting member 55 is rotatable in the front-rear direction with respect to the pivot 16. 1 ring portion 56 and a second ring portion 57 that can be rotated in the left-right direction with respect to the first ring portion 56. It can swing.

  As shown in FIG. 13 (b), the surrounding member 60 includes a ring-shaped portion 60 a having a diameter larger than that of the winding spring 20 at the front end. The winding spring 20 can be inserted into the ring-shaped portion 60a in a state with a predetermined distance from the inner peripheral surface of the ring-shaped portion 60a.

  As shown in FIG. 14 (a), when the shelf 2 vibrates in the forward direction due to a predetermined or greater shaking such as an earthquake, the weight part 320 is swung in the rear direction, and the surrounding member 60 extending from the pendulum member 300 The front end side 60b of the ring-shaped portion 60a collides with the front side of the winding spring 20. Due to the collision of the front end of the ring-shaped portion 60a of the surrounding member 60, a part of the winding spring 20 is refracted and the moving force vector X 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, and the recumbent part 9 is rotated below. Although not particularly illustrated, even when the shelf 2 vibrates in the left-right direction, the weight portion 320 is swung in the left-right direction, and the left and right portions of the rod-shaped body of the surrounding member 60 extending from the pendulum member 300 are wound as described above. By colliding with the spring 20, the support function by the winding spring 20 is lost, and the horizontal flange 9 is rotated downward.

14B, when the shelf 2 vibrates backward, the weight portion 320 is swung forward, and the rear end of the ring-shaped portion 60a of the surrounding member 60 extending from the pendulum member 300. The side 60 c collides with the rear side of the winding spring 20.
Since the winding spring 20 is surrounded by the ring-shaped portion 60a of the surrounding member 60 as described above, even if the shelf 2 vibrates in either the front-rear direction due to a predetermined or greater swing such as an earthquake, the ring-shaped portion 60a The front end side 60b or the rear end side 60c of the portion 60a functions as a restriction release unit that bends the winding spring 20 by colliding with the winding spring 20, and can prevent the article from falling.

  In the third embodiment, the surrounding member 60 is provided so as to extend from the pendulum member 300 constituting the seismic operation means 3 ″. However, the present invention is not limited to this. For example, as shown in FIG. The surrounding portion 610 and the arm portion 620 may be formed by a rod-like body having a predetermined weight so as to surround the spring 20. According to this, a seismic movement function as a weight is provided by the weight of the rod-like body. In addition, since the front end portion 610a and the rear end portion 610b can be integrally formed as a restriction release portion that collides with the winding spring 20 by the surrounding portion 610, the number of parts can be reduced.

  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 above-described embodiment, the mode in which the pendulum members are arranged one by one before and after the winding spring 20 has been described. However, the present invention is not limited thereto, and the winding spring 20 has a plurality of hit points along the vertical direction. A plurality of pendulum members may be provided before and after the spring 20.

  In the embodiment described above, the pendulum member having a weight is used as the seismic operation means. However, as long as it has a seismic function and a function of dividing the moving force vector X of the stopper member 6. 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 horizontally on the support body. The vector X of the moving force of the stopper member 6 at the 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 for preventing the article from falling is not limited to the rod-shaped member, and may be a cover member that covers the front surface of each shelf board 5 when the fall prevention function is operated, 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 Seismic-type article fall prevention apparatus 2 Article storage shelf 3, 3 ', 3''Seismic operation means 4A, 4A Side plate 4B Top plate 5 Shelf plate 6 Stopper member 7 Support body 7A Outer plate 7B Inner plate 8 Arm Part 8b arm lower end part 9 recumbent part 15 book 16 pivot 20 winding spring (support part)
30, 30 'pendulum member (seismic moving part)
32a, 32a 'restriction release part 60a ring-shaped part front end part (regulation release part)
60b Ring-shaped rear end (regulation release part)
300 Pendulum member (seismic moving part)
X vector of moving force Y vector in the front-rear direction

Claims (4)

A stopper member provided so as to be able to 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; ,
The stopper member is fixedly supported with respect to the vector of the moving force applied to the stopper member, and the movement of the stopper member is restricted, and the restriction is released by its bending or refraction. A support part;
A feeling provided with a seismic moving part that moves in the front-rear direction of the shelf in response to shaking of the shelf, and a restriction releasing part that moves back and forth in conjunction with the seismic moving part and releases the restriction in the support part. Seismic actuation means,
The regulation release part is disposed before and after the support part, and functions to bend or refract the support part by a predetermined amount or more of movement of the regulation release part. apparatus.   The said seismic movement part is a pendulum member respectively arrange | positioned with respect to the said support part at the front side and back side, Each pendulum member has the said regulation release part, respectively. The seismic-type article fall prevention device described in 1.   The earthquake-sensitive article fall prevention device according to claim 2, wherein a collision point of each restriction release portion with respect to the support portion is set at a position shifted in a length direction of the support portion.   The seismic-sensing article drop according to claim 1, wherein the seismic-sensing moving part is a single pendulum member in which a restriction releasing part is arranged on each of the front side and the rear side with respect to the support part. Prevention device.

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