JP2019116385A - Fall prevention device of placed article - Google Patents

Abstract

To provide a fall prevention device for a product or the like placed on a shelf or a rack due to the occurrence of an earthquake or the like, which operates even when a power failure occurs due to the earthquake.SOLUTION: A falling prevention member 45 lowers when a left rotating rod 15 and a right rotating rod rotate in accompaniment to supporting the entire load of a placed article W being supported by a load support member 17 supporting the entire load of the placed article W, the falling prevention member 45 is located on the front side of the placed article W when the falling prevention member 45 is most lowered, an insertion space is formed in which placed article lifting means is inserted from the front side to the lower side thereof.SELECTED DRAWING: Figure 4

Description

  The present invention is to prevent a mounting object such as a product or part mounted on a mounting plate such as a shelf, rack or cabinet from falling over or falling off the mounting plate due to vibration such as earthquake. The present invention relates to a fall prevention device for a load used for

  As an apparatus for preventing that a product etc. mounted on mounting boards, such as a shelf and a rack, fall by generation | occurrence | production of an earthquake etc. until now, Unexamined-Japanese-Patent No. 2010-273955 (patent document 1), for example What has been disclosed in U.S. Pat. In the storage item drop prevention unit disclosed in this publication, the drop prevention arm is lowered from the standby state by driving an actuator that operates in response to a signal from a seismometer that detects vibrations due to earthquakes.

  Therefore, according to the storage item drop prevention unit disclosed in Patent Document 1, the storage item does not drop by coming into contact with the drop prevention arm lowered due to the occurrence of an earthquake.

JP, 2010-273955, A

  However, in the case disclosed in the above-mentioned Patent Document 1, since the seismometer and the actuator are components and they operate electrically, not only the power supply is necessarily required but also a power failure due to an earthquake Does not work.

  Therefore, the present invention is proposed to solve the problems of the above-described conventional techniques, and the electrically operating member is not used as a component at all, and is mounted by vibration such as earthquake. It is an object of the present invention to provide a novel load fall prevention device capable of preventing the dropped load from falling.

  The present invention has been proposed to solve the above-mentioned problems, and in the first invention, the front side is released, and the inside is formed with a load accommodating space in which the load is accommodated. A left pivoting rod rotatably disposed about a left pivot having a length in the horizontal direction, and a right pivot having a length in the horizontal direction. A right pivot rod rotatably disposed as a pivot center, the left end is connected to the front end side or the rear end side of the left pivot rod, and the right end is connected to the front end or the rear end side of the right pivot rod A load supporting member for supporting all or part of the load of the above-mentioned figurine, a front end side or a rear end side of the load supporting member, or a front end side or a rear end side of the left pivot rod or the right pivot rod An elastic member which is always urged upward and a load is placed on the load supporting member In the previous standby state, the standby state is a standby position above or diagonally above the load support member, and in the overturning prevention state after the load is placed on the load support member, the load supporting member is placed from the standby position. The left support shaft pivotally supports the left pivoting rod at either one of the front end side and the rear end side of the left pivoting rod; The shaft pivotally supports the right pivot rod on either the front end side or the rear end side of the right pivot rod, and the left end of the overturn preventing member and the left pivot rod are wires consisting of linear bodies. Are connected with one another by a link member or a link connection member consisting of a single or a plurality of link members, or a composite connection member consisting of the above-mentioned linear body and a plurality of link members, The right pivot rod is a linear connecting member consisting of a linear body, or one or more reeds. When they are mutually connected by a link connecting member made of a hook member or a composite connecting member consisting of the above-mentioned linear body and a plurality of link members, and the above-mentioned overturn preventing member is put into the above-mentioned overturning prevention state An insertion space is formed below the overturn prevention member in which a load lifting means for lifting a load from above the load support member and forming a load lifting means constituting a fork or other machine or device of a forklift is formed from the front side. It is a thing.

  In the fall prevention device for a mounting object according to the first aspect of the present invention, a front surface side is released and a mounting object storage space for accommodating the mounting object is formed inside. The member which forms this accommodation space may comprise a left side plate and a right side plate, and may comprise a left frame and a right frame. In the first aspect of the invention, the left pivot rod and the right pivot rod are provided. The left pivot rod and the right pivot rod are pivotable about a left support shaft or a right support shaft having a length in the horizontal direction. The left pivot supports the left pivot at either the front end side or the rear end of the left pivot, and the right pivot corresponds to the front end or the rear end of the right pivot. The right pivot rod is pivotally supported on either one side.

  Further, in the present invention, the load supporting member is a component, and the load supporting member has a left end connected to the left pivoting rod and a right end connected to the right pivoting rod. Supports all or part of the load of Therefore, the left support shaft pivotally supports the left pivot rod on the front end side of the left pivot rod, and the right support shaft pivotally supports the right pivot rod on the front end side of the right pivot rod. And, when the left end of the load supporting member is connected to the front end side of the left pivoting rod and the right end of the load supporting member is connected to the front end side of the right pivoting rod, the load supporting member is mounted on the load supporting member. When the load of the figurine is supported, the respective rear ends of the left pivot rod and the right pivot rod are larger than the lengths by which the respective front ends of the left pivot rod and the right pivot rod descend according to the principle of forceps To rise. Conversely, the left support shaft pivotally supports the left rotation rod at the rear end side of the left rotation rod, and the right support shaft rotates the right rotation rod at the rear end side of the right rotation rod. And the left end of the load supporting member is connected to the rear end side of the left pivoting rod, and the right end of the load supporting member is connected to the rear end side of the right pivoting rod. When the load of the loading object is supported by the load supporting member, the front ends of the left and right pivot rods are lowered by the principle of the forceps, respectively. Rise more than the length. In addition, this load supporting member should just support at least one part of the load of a mounting thing, and the shape and area are not specifically limited. For example, most of the load of the load may be supported by the bottom plate, and a portion of the load may be a horizontally disposed bar so as to be supported by the load support member, or the entire load is loaded. It may be configured of a plate to be placed.

  Further, in the present invention, the elastic member is a component. The elastic member may be biased so that the front end side or the rear end side of the load support member is always positioned upward, or the front end side of the left rotation lever or the right rotation lever or The rear end side may be biased to be always positioned at the upper side. The above-mentioned elastic member is an elastic member that biases the left pivoting rod, in which the front end side or the rear end side of the left pivoting rod or the right pivoting rod is always urged upward. The elastic member for biasing the right pivot rod may be separately disposed. In addition, since this (these) elastic member biases so that the front end side or the rear end side of the load supporting member or the left pivoting rod or the right pivoting rod is always positioned upward, The members are not only disposed below the load supporting member or the left pivoting rod or the right pivoting rod, but may be disposed above them. In addition, the shape of the elastic member may be a wound spring or a plate spring.

  Further, in the present invention, the fall prevention member is a component. In the standby state before the placed object is placed on the load supporting member, the overturn preventing member stands by at a standby position above or diagonally above the load supporting member and placed on the load supporting member. In the overturning prevention state after the figurine has been placed, it moves from the standby position to the front side of the placing object. The left end of the overturn preventing member and the left pivot rod are a linear connecting member made of a linear body, a link connecting member made of a single or a plurality of link members, or the linear body and a plurality of links The right end of the overturn preventing member and the right pivot rod are made of a linear connecting member made of a linear body, or a single or a plurality of link members. It is mutually connected by the link connection material or the compound connection material which consists of the said linear body and several link members. Therefore, in the present invention, when the load is placed on the load supporting member, the overturn preventing member is in the standby state via the linear connecting member, the link connecting member, or the composite connecting member. Move to the above fall prevention state from. Furthermore, in the present invention, when the overturn preventing member is put into the overturn preventing state, the load lifting means constituting the fork or other machine or device of the forklift lifts the load from the load supporting member. An insertion space inserted from the side is formed below the overturn preventing member.

  Therefore, according to the overturn preventing device for the load according to the configuration described above, when all or a part of the load of the load is supported by the load support member by the above-described load lifting means, the elastic force of the elastic member On the other hand, the left pivoting rod pivots about the left pivot and the right pivoting rod pivots about the right pivot due to the load of the mounting object, and as a result, the left pivoting rod The rear end side or the front end side of the right pivot rod moves upward for a distance longer than the distance the load support member descends, and rotation of the left pivot rod and the right pivot rod, and the linear Through the operation of the connecting member, the link connecting member, or the combined connecting member, the overturn preventing member in the standby state is in the overturn preventing state. And since the said insertion space is formed in the downward direction of the fall prevention member which became in the fall prevention state in this way, it is possible to move the above-mentioned deposit lifting means outside in the state which left the above-mentioned deposit. it can. In this state, when the above-mentioned object is tilted in the direction of falling due to vibration such as an earthquake, the mounting object abuts on the above-mentioned anti-falling member, and it is prevented from falling. On the other hand, when removing the above-mentioned figurine from the above-mentioned load support plate, when the above-mentioned deposit lifting means is inserted from the outside into the above-mentioned insertion space and lifted from above the load support member, the above-mentioned elastic force of the above-mentioned elastic member The load support member, the left pivot rod, the right pivot rod, and the overturn preventing member respectively return to the original state (standby state).

  That is, in the device for preventing overturning of the mounting object according to the first aspect of the invention, the load supporting member supports the load by the vibration of the earthquake or the like only from the mechanical configuration without using the electrically operating member as a component at all. It is possible to prevent the mounted object from falling, and it is possible to reliably prevent the falling object from falling even if a power failure occurs due to the occurrence of an earthquake or the like.

  Further, according to a second aspect of the present invention, in the first aspect, the object storage space described above includes a bottom plate, a left side plate erected on the left side of the bottom plate, and a left side plate erected on the right side of the bottom plate. The load supporting member is disposed above the bottom plate, and the load supporting member is lowered against the elastic force of the elastic member by the load of the mounting object. Then, it abuts on the upper surface of the bottom plate.

  Therefore, even in the case of the overturn preventing device of the mounting object according to the second aspect of the present invention, the electrically actuated member is never used as a component at all, and the load support is provided by vibration such as earthquake from only the mechanical configuration. It is possible not only to prevent the falling of the load whose load is supported by the member, but also to reliably prevent the falling of the load even when the power failure occurs due to the occurrence of an earthquake or the like. The placement object is placed on the load support member, and when the load support member descends, the load abuts on the upper surface of the bottom plate, so that the placement portion can be placed in a more stable state.

  Further, according to a third invention, in the second invention, the overturn preventing member is positioned on the upper end side of the front end side of the left side plate and the right side plate in the standby state, and in the overturn preventing state It is located halfway on the front end side of the left side plate and the right side plate, and is located on the front side of the above-mentioned figurine, and on the front side of the left side plate and the right side plate The position holding means for holding the position of the overturn preventing member is disposed in the case where the overturn preventing member is disposed, and the left end of the overturn preventing member and the left pivot rod are connected by the linear body constituting the linear connecting member. Or connected to the end of the linear body constituting the composite connecting member, and the right end of the overturn preventing member and the right turning rod constitute the linear body constituting the linear connecting member Connected by the same or constituting the composite connecting member The left pivot rod pivots about the left support shaft when the load is mounted on the load support member, and the right pivot rod rotates the right support shaft. While being pivoted to the center, the overturn preventing member is lowered to reach the overturn preventing state through the operation of the linear connecting member or the composite connecting member.

  In the third aspect of the present invention, the left and right ends of the overturn preventing member are suspended by the linear body, and the overturn preventing member is lowered when the load is placed on the load supporting member. When the loading object is removed from the load supporting member, it is raised to reach the standby state. That is, in the third aspect of the invention, the overturn preventing member is movable up and down, and when the overturn preventing member is lowered to reach the overturn preventing state, an earthquake or the like occurs and the mounted object overturns. When it abuts on the member, the position holding means holds the position of the overturn preventing member. As the position holding means, for example, a left guide plate facing the front is provided on the front side of the left side plate, and the inside of the left guide plate is not a left guide space, and the front side of the right side plate A right guide plate facing the front is provided on the inner side of the right guide plate as a right guide space, and the left end side of the overturn prevention member is disposed in the left guide space, and the right end side of the overturn prevention member Is disposed in the right guide space, and when the above-mentioned object comes in contact with the overturn preventing member, the left end side of the overturn preventing member abuts on the back surface of the left guide plate and the right end side of the overturn preventing member is the above By adopting a configuration that abuts on the back surface of the right guide plate, the overturn preventing member may be configured to hold its position.

  Further, according to a fourth invention, in any one of the first, second or third inventions, the left end of the overturn preventing member and the left pivot rod are connected to each other by the composite connecting member, and The right end of the overturn preventing member and the right pivoting rod are connected to each other by the composite connecting member, and a first left side constituting the composite connecting member at the rear end of the left pivoting rod One end of the link member is rotatably connected, and the other end of the second left link member constituting the combined connecting member is rotatably connected to the other end of the first left link member, The other end of the left link member 2 is fixed to the other end of the left link member, and one end of the left linear member guided by the linear member guide member is fixed to the middle portion of the composite connection member. The composite connecting member is fixed to the left end of the overturn preventing member, and the rear end of the right pivot rod forms the composite connecting member. One end of a right link member is rotatably connected, and one end of a second right link member constituting the combined connecting member is rotatably connected to the other end of the first right link member, At the other end of the second right link member, one end of the right linear body which is a composite connecting member and which is guided by the linear body guide member is fixed at the middle portion, and the other end of the right linear body Is fixed to the right end of the overturn preventing member, and when the load is placed on the load supporting member, the left pivoting rod pivots about the left support shaft, and the right pivoting rod is It is characterized in that while turning around the right support shaft, the overturn preventing member is lowered to reach the overturn preventing state through the operation of the combined connecting member.

  The fall prevention device for a mounting object according to the fourth aspect of the present invention is a device in which the left rotation rod or the right rotation rod and the fall prevention member are connected by the composite connection member, and the composite connection member is As link members to be configured, first and second left link members and first and second right link members are components. By using such a composite connection member as a component, the elevating range of the overturn preventing member which can be raised and lowered from the standby state to the overturn preventing state can be made long.

  Further, according to a fifth invention, in any one of the second, third or fourth inventions, the left convex portion protruding in the direction of the left side plate is provided at a rear end or rear end side middle portion of the left rotary rod. A left guide groove corresponding to a movement locus along which the left convex portion is inserted and the left convex portion is moved is formed in the left side plate, and a rear end or a rear portion of the right rotation rod is formed. A right convex portion protruding in the right side plate direction is formed in the end side middle portion, and the right convex portion is inserted into the right side plate and a right corresponding to a movement locus along which the right convex portion moves. A guide groove is formed, and while the left pivot rod is guided by the left guide groove, the right pivot rod is pivoted while being guided by the right guide groove. is there.

  According to the fall prevention device for a mounting object in accordance with the fifth aspect of the present invention, the left pivoting rod is connected to the left guide groove via the left convex portion, and the right pivoting rod is connected to the right convex portion. Since it is pivotally moved while being guided by the right guide groove, the left rotation associated with the load of the above-described object being supported by the above-mentioned load support member and the above-mentioned load being removed from the load support member The pivoting motion of the pivoting lever and the right pivoting pivot can be made smooth, and thus the above-mentioned overturn preventing member can be smoothly moved up and down.

  As described above, any of the left pivoting rod and the right pivoting rod constituting the present invention may be disposed not only on the outer side but also on the inner side of the left side plate or the right side plate. The left protrusion is not only inserted inward from the outer side of the left side plate, but is inserted from the inner side of the left side plate if the left turning rod is disposed inside the left side plate It may be Similarly, the right convex portion is not only inserted from the outside of the right side plate inward but also from the inside of the right side plate when the right turning rod is disposed inside the right side plate. It may be inserted in the outward direction.

In a sixth aspect of the present invention, in the fourth aspect,
A left link side convex portion protruding in the left side plate direction is formed at an end portion and / or an intermediate portion of the first and second left link members, and the left side link member is provided with the left link side A left link side guide groove corresponding to a movement locus along which the convex portion moves is formed, and an end portion and / or a middle portion of the first and second right link members is a right link side protruding in the right side plate direction A convex portion is formed, and a right link side guide groove corresponding to a movement locus along which the right link convex portion moves is formed in the right side plate, and the first and second left link members are formed. 5. The mounting according to claim 4, wherein the first and second right link members are respectively pivoted while being guided by the right link guide groove while being guided by the left link guide groove. Overturn protection device for figurines.

  According to the fall prevention device for a mounting object according to the sixth aspect, the first and second left link members are in the left link side guide groove, and the first and second right link members are the right link. Since each of the side guide grooves is pivotally operated while being guided respectively, the load of the above-described object is supported by the load support member, and the first and the first in connection with lifting the load from the load support member. The pivoting motions of the left link member 2 and the first and second right link members can be made smooth, and hence the overturn preventing member can be operated smoothly.

  The seventh invention is the invention according to any of the second, third, fourth, fifth or sixth inventions, wherein the load supporting member is formed in a plate shape, and the load supporting member The left end of the left pivoting rod and the front end side or the rear end side of the left pivoting rod are rotatably connected with each other by the left pivoting shaft, and the right end of the load support member and the front end side or the rear end side of the right pivoting rod Are mutually connected rotatably by the right rotation shaft, and when all or part of the load of the load is supported by the load support member, the lower surface of the load support member and the bottom plate A top surface is in contact with the upper surface.

  In the device for preventing overturning of a mounting object according to the seventh invention, the load supporting member is formed in a plate shape, and supports all or part of the load of the mounting object as described above. is there. In the fourth aspect of the invention, the left end of the load support member and the front end side or the rear end side of the left pivot rod are rotatably connected to each other by the left pivot shaft, and the right end of the load support member The front end side or the rear end side of the right rotation rod is rotatably connected to each other by a right rotation shaft. Therefore, according to the fall prevention device of the mounted object configured in this way, all or a part of the load of the mounted object is supported by the load supporting member, and the load supporting member descends against the elastic force of the elastic member. The left pivoting rod and the right pivoting rod pivot about the left pivot or the right pivot while the load support member pivots about the left pivot and the right pivot. The posture of the load supporting member is not affected by the pivoting movement of the left pivoting rod or the right pivoting rod, and the load is a plate while the mounting object is supported by the upper surface of the load supporting member. The lower surface of the load support member abuts on the upper surface of the bottom plate without being inclined with respect to the upper surface of the bottom plate located below the support member, and it becomes possible to support the load in a more stable state.

  In the eighth invention according to the first invention, the above-mentioned figurine housing space includes a left frame formed in a square shape, a right frame formed in a square shape, and the left frame and the right frame. The load supporting member is surrounded by a plurality of connected horizontal weirs, and the load supporting member is formed in a plate shape, and the front end side or the rear end side of the left end of the load supporting member and the front end side of the left pivoting rod Alternatively, the rear end side is rotatably connected to each other by one left rotation shaft, and the rear end side or the front end side of the left end of the load support member and the left frame are rotated by the other left rotation shaft The front end side or the rear end side of the right end of the load support member and the front end side or the rear end side of the right rotation rod are freely connected, and are mutually connected rotatably by one right rotation shaft, The rear end side or front end side of the right end of the load support member and the right frame rotate the other to the right The is characterized in that formed by rotatably connected.

  In the fall prevention member for a mounting object according to the eighth aspect, the rear end side or the front end side of the left end of the load supporting member formed in a plate shape and the left frame can be pivoted by the other left pivot shaft. The right end rear end side or front end side of the load support member and the right frame are rotatably connected by the other right pivot shaft. Therefore, the load support member is pivotable about the other left pivot shaft and the other right pivot shaft, which are respectively fixed. Further, the front end side or the rear end side of the left end of the load support member and the front end side or the rear end side of the left rotary rod are rotatably connected with each other by one left rotary shaft, and the load support member The front end side or rear end side of the right end and the front end side or rear end side of the right rotation rod are rotatably connected to each other by one right rotation shaft. Therefore, when the load of the loading object acts on the load supporting member according to such a configuration, the load supporting member rotates with the other left rotation axis and the other right rotation axis as rotation centers, The front end side or the rear end side of the left pivoting rod and the front end side or the rear end side of the right pivoting rod move downward, and along with the movement of the load supporting member, the linear connecting member or link connecting member Alternatively, the overturn prevention member is moved from the standby state to the overturn prevention state through the operation of the combined connecting member.

  Therefore, according to the overturn preventing member of the placing object according to the eighth invention, there is no need to constitute the left side plate and the right side plate, and further, the bottom plate, and it is possible to operate the overturn preventing member. Become.

  In a ninth aspect based on the eighth aspect, the left end of the overturn preventing member and the left pivot rod are connected via the link connecting member, and the right end of the overturn preventing member and the right turn The swinging rod is connected via the link connecting member, and when the load is placed on the load support member, the left swinging rod rotates about the left support shaft, The right pivot rod pivots about the right support shaft, and the overturn preventing member is separated from the upper end side of the left frame and the right frame to the front side of the object via the movement of the link connecting member. And is configured to reach the fall-preventing state.

  In the overturn preventing member of the placing object according to the ninth invention, a linear body is not used as in the invention described above, and the overturn preventing member is mounted from the upper end side of the left frame and the right frame. Since it is configured to draw an arc on the front side of the figurine to reach the fall prevention state, the linear body is cut or the fall prevention member is in a horizontal state by being used for a long period of time It is possible to effectively prevent the partial descent without holding.

  Further, according to a tenth invention, in the eighth or ninth invention, the overturn preventing member is a plate-like overturn preventing member main body positioned in front of the mounting object in the overturn preventing state; The front end is fixed to the left side of the back surface of the overturn prevention member main body, and the rear end is extended to the rear of the overturn prevention member main body and the left arm rotatably connected to the link member; A front end is fixed to the right side of the rear surface of the main body, and a rear end is extended to the rear of the anti-falling member main body and has a right arm rotatably connected to the link member; The left contact member is fixed, the right contact member is fixed to the right arm, and the left frame has a length in the horizontal direction inside, and the left side is in the overturn prevention state. Abutment member abuts A left stopper is fixed, and a right stopper having a length in the horizontal direction and in contact with the right contact member is fixed in the inside of the right frame in the fall prevention state. It is.

  In the fall prevention device for a mounting object according to the tenth invention, when the fall prevention member reaches the fall prevention state from the standby state, the left contact member abuts on the left stopper, and the right contact member Contact the right stopper. Therefore, according to the overturn preventing device of the mounting object according to the tenth aspect of the present invention, each state (overturn preventing state) can be stably maintained even when an external force acts downward on the overturn preventing member. Thus, the link member, the left pivoting lever or the right pivoting rod can be effectively prevented from being damaged or adversely affecting the connection state thereof.

  According to the present invention, it is possible to prevent the load supported by the load from falling on the load receiving member due to vibration such as an earthquake only by using the mechanical configuration without using the electrically operating member as a component at all. be able to.

  In particular, according to the overturn preventing device of the placing object according to the fifth and sixth inventions, the load of the placing object is supported by the load supporting member, and the placing object is lifted from the load supporting member. As a result, the rotational movement of each link member associated with the movement can be made smooth, and the fall prevention member can be operated smoothly.

  Moreover, according to the fall prevention device for the mounting object according to the seventh and eighth inventions, it becomes possible to support the mounting object in a stable state, and it overturns carelessly by vibration such as earthquake. It becomes possible to prevent that.

  Further, the overturn preventing member of the placing object according to the ninth invention does not use a linear body as in the invention described above, and the overturn preventing member is the upper end side of the left frame and the right frame. According to the ninth aspect of the present invention, the linear body is used by being used for a long period of time, since it is configured to draw an arc on the front side of the mounting object to reach the anti-fall state. It is possible to effectively prevent the cutting and the downward falling of the overturn preventing member without holding the horizontal state.

  Further, according to the overturn preventing device of the mounting object in accordance with the tenth aspect of the present invention, each state (overturn preventing state) can be stably maintained even when an external force acts downward on the overturn preventing member. Thus, the link member, the left pivoting lever or the right pivoting rod can be effectively prevented from being damaged or adversely affecting the connection state thereof.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which decomposes | disassembles and shows the fall prevention apparatus of the mounted material which concerns on the 1st Embodiment of this invention. It is a sectional view on the right side of the fall prevention device of a mounting thing which shows the state where the fall prevention member rose. It is a right side view of the fall prevention device of a mounting thing. It is a sectional view on the right side of the fall prevention device of a mounting thing which shows the state where the fall prevention member fell. It is a front view of the overturn prevention device of the mounted object which shows the state which the overturn prevention member rose. It is a top view of the fall prevention apparatus of the mounted material which fractures | ruptures and shows one part. It is a front view of the overturn prevention device of the mounted thing which shows the state in which the mounted thing was mounted. It is a side sectional view showing a fall prevention device of a mounting thing concerning a 2nd embodiment of the present invention. It is an exploded perspective view showing a fall prevention device of a mounting thing concerning a 3rd embodiment of the present invention. It is a right sectional view showing a state before a mounting thing is laid on a load supporting member. It is a front view which shows the state before a mounting thing is mounted on a load support member. FIG. 11 is a right side cross-sectional view showing a state after the mounting object is placed on the load support member from the state shown in FIG. 10. It is a front view which shows the state after mounting a mounting thing on a load supporting member from the state shown in FIG.

  Hereinafter, a fall prevention device (hereinafter referred to as a fall prevention device) according to the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the overturn preventing device 1 according to this embodiment (the first embodiment) includes a bottom plate 2 formed in a square shape and a left side plate 3 standing up from the left end of the bottom plate 2. And the right side plate 4 standing up from the right end of the bottom plate 2 and the back side end of the bottom plate 2 while the left end is connected to the back side end of the left side plate 3 and the right end is the right side plate A rear plate 5 connected to the rear end of the rear cover 4 and a top plate 6 facing the bottom plate 2 are provided. In the overturn prevention device 1 according to this embodiment, the left side plate 3, the right side plate 4, the back plate 5 and the top plate 6 are all made of a metal plate formed in a square shape.

  Then, as shown in FIG. 1 or 2, the first left support shaft holding member 11 is fixed to the left front side middle portion of the bottom plate 2, and as shown in FIG. 1 or 3, the bottom plate A first right support shaft holding member 12 is fixed to a front side middle part on the right side of the second part 2. The first left support shaft holding member 11 and the first right support shaft holding member 12 are formed on the base portions 11a and 12a fixed to the upper surface of the bottom plate 2 and the upper portions of the base portions 11a and 12a, respectively. And a spindle holding portion 11b, 12b in which a shaft insertion hole (reference numeral is omitted) is bored in the left-right direction, and the spindle holding portion 11b of the left spindle holding member 11 of the above 1 is provided. , The left support shaft 13 is inserted. The right support shaft 14 is inserted through the support shaft holding portion 12 b of the first right support shaft holding member 12. A left pivot rod 15 is attached to the left support shaft 13. The left pivot rod 15 has a length from the front side to the back side of the overturn preventing device 1, and the left support shaft 13 is inserted into the front side midway portion. The left insertion hole 15a is formed, and the second left insertion hole 15b is formed on the front side (front end side) further than the position where the first left insertion hole 15a is formed. Further, the right pivot rod 16 is attached to the right support shaft 14. The right pivot rod 16 is formed in the same shape as the left pivot rod 15, and a first right insertion hole 16a through which the right support shaft 14 is inserted in the front middle part. The second right insertion hole 16b is formed on the front side (front end side) further than the position where the first right insertion hole 16a is formed. That is, the left pivot rod 15 is pivotally supported rotatably about the left support shaft 13 (fulcrum), and the right pivot rod 16 pivots the right support shaft 14 (fulcrum) It is pivotally supported as a center, and as described later, when a load acts on the front end (force point) of the left rotary rod 15, the rear end (rear end) of the left rotary rod 15 Is raised over a distance longer than the distance the front end (front end) moves downward, and when a load is applied to the front end (force point) of the right rotation rod 16, the right rotation rod 16 The rear end of the rear end (rear end) rises over a longer distance than the front end (front end) moves downward.

  Further, on the bottom plate 2, a load support member 17 for supporting the load of the mounting object is disposed. The load supporting member 17 is formed to have a length and a width slightly narrower than the length and the width of the bottom plate 2, and in the overturn preventing device 1 according to this embodiment, the front end (front end) is As shown in FIG. 2 or FIG. 3, it protrudes slightly to the front of the front end (front end) of the bottom plate 2. Further, the rear end (rear end) of the load support member 17 is supported and in contact with the bottom plate 2. Then, as shown in FIG. 1, the second left support shaft holding member 18 is attached to the left end on the front side of the load support member 17, and the second right support holding member 19 is mounted on the right side of the front side. Is fixed. The second left support shaft holding member 18 and the second right support shaft holding member 19 are formed on the base portions 18a and 19a whose lower surfaces are fixed to the bottom plate 2 and the upper portions of the base portions 18a and 19a. The spindle holding portions 18b and 19b are provided with shaft insertion holes (symbols are omitted) formed in the left-right direction, and the spindle holding portion 18b of the left spindle holding member 18 of the above 2 has , The left rotation shaft 21 is inserted. Further, the right pivot shaft 22 is inserted through the spindle holding portion 19 b of the second right spindle holding member 19.

  The left pivot shaft 21 is inserted into the second left insertion hole 15b formed in the left pivot rod 15 as shown in FIG. 2, and the right pivot shaft 22 is shown in FIG. As shown, the second right insertion hole 16 b formed in the right rotation rod 16 is inserted. That is, the left side on the front side of the load support member 17 is rotatably supported and coupled via the left rotation shaft 21, and the right side on the front side of the load support member 17 is the right rotation shaft It is rotatably supported and connected via 22. Therefore, as described later, when the load is placed on the load support member 17, the load support member 17 moves downward while rotating about the left pivot shaft 21 and the right pivot shaft 22. Finally, the lower surface abuts on the upper surface of the bottom plate 2.

  Further, as shown in FIG. 1 or 2, one end of the first left link member 28 is connected to the rear end of the left pivot rod 15 via the first left link convex portion 27. It is rotatably connected centering on the left link side convex part 27 of this. Further, at the other end of the first left link member 28, one end of the second left link member 30 is connected to the second left link convex portion 29 via the second left link convex portion 29. It is pivotally connected to the center. A third left link convex portion 31 is formed at the other end side middle portion of the second left link member 30, and a fourth left end is formed at the other end of the second left link member 30. The link-side convex portion 32 is formed. In the overturn prevention device 1 according to this embodiment, a fifth left link convex portion 33 is further formed in the middle of the first left link member 28. The first to fifth left link-side convex portions 27, 29, 31, 32, 33 each have a length in the thickness direction of the left side plate 3.

  Further, as shown in FIG. 1 or 3, one end of the first right link member 36 is connected to the rear end of the right pivot rod 16 via the first right link convex part 35. It is rotatably connected centering on the right link side convex part 35 of this. Further, at the other end of the first right link member 36, one end of the second right link member 38 is connected to the second right link convex portion 37 via the second right link convex portion 37. It is pivotally connected to the center. A third right link convex 40 is formed at the other end of the second right link member 38, and a fourth right end is formed at the other end of the second right link member 38. The link-side convex portion 41 is formed. In the overturn prevention device 1 according to this embodiment, a fifth right link convex portion 42 is further formed in the middle of the first right link member 36. Each of the first to fifth right link convexes 35, 37, 40, 41, 42 has a length in the thickness direction of the right side plate 4.

  Then, as shown in FIG. 2, one end of the left linear body 43 is connected to the other end of the second left link member 30, and the other end of the second right link member 38 is shown in FIG. One end of the right linear body 44 is connected as shown in FIG. The left linear body 43 and the right linear body 44 are respectively formed of flexible linear bodies such as chains or wires, and the other ends of the left linear body 43 and the right linear body 44. Is fixed to the left end side and the right end side of the overturn preventing member 45 which ascends and descends on the front side of the left side plate 3 and the right side plate 4. The overturn preventing member 45 is a rod-like body having a length in the horizontal direction, as shown in FIG. 1 or 5.

  The lower end of the left elastic member 47 is fixed to the left rear end side of the bottom plate 2 as shown in FIG. 2, and the upper end of the left elastic member 47 is at the rear end of the left pivot rod 15 It is locked. Further, as shown in FIG. 3, the lower end of the right elastic member 48 is fixed to the right rear end side of the bottom plate 2, and the upper end of the right elastic member 48 is at the rear end of the right pivot rod 16. It is locked. In the overturn prevention device 1 according to the present embodiment, the left elastic member 47 and the right elastic member 48 are configured by a (pulled) coil spring, and the left rotation lever 15 or the right rotation lever is used. The rear end side of 16 is biased downward (in the direction of the bottom plate 2).

  Further, the first to fifth left link-side convex portions 27, 29, 31, 32, 33 are inserted into the left side plate 3, and the first left link member 28 and the second left link member 30 are inserted. The first to fifth left guide grooves 51... 55 corresponding to the trajectory of the movement operation are formed in an arc shape. Further, the first to fifth right link-side convex portions 35, 37, 40, 41, 42 are inserted into the right side plate 4, and the first right link member 36 and the second right link member 38 are inserted. The first to fifth right guide grooves 56... 60 corresponding to the locus of the movement of the lens are formed in an arc shape.

  At the upper end side of the inner side surface of the left side plate 3, as shown in FIG. 1 or 2, a first left linear body guide member 63 for supporting and guiding the middle portion of the left linear body 43 respectively , The second left linear body guide member 64 is disposed. Further, on the upper end side of the inner surface of the right side plate 4, as shown in FIG. 1 or 3, a first right linear body guide member 65 for guiding the middle portion of the right linear body 44, A second right linear guide member 66 is arranged. The first left linear body guide member 63 and the first right linear body guide member 65 are disposed slightly behind the front (front end) of the left side plate 3 and the right side plate 4 respectively, and The left linear body guide member 64 and the second right linear body guide member 66 are disposed in the front vicinity of the left side plate 3 and the right side plate 4 respectively.

  Further, as shown in FIG. 1 or 6, a left elevating guide member 68 having a U-shaped planar shape is fixed to the front surface of the left side plate 3 and a front surface of the right side plate 4 has a flat surface. The right raising and lowering guide member 69 which is formed in a U-shape is fixed. The left elevating guide member 68 and the right elevating guide member 69 are fixed plate portions 68a and 69a fixed to the front of the left side plate 3 or the right side plate 4 respectively, and their backs face the front of the fixed plate portions 68a and 69a. It comprises a front plate portion 68c, 69c facing each other and an outer side plate portion 68c, 69c flush with the outer side surface of the left side plate 3 or the right side plate 4; Is open, and the left side of the right elevation guide member 69 is open. The left end side of the overturn preventing member 45 described above is inserted into the left elevating guide member 68, and the right end side of the overturn preventing member 45 is inserted into the right elevating guide member 69. The lower ends of the left elevating guide member 68 and the right elevating guide member 69 are located near the middle position of the left side plate 3 or the right side plate 5 respectively. The front plate portions 68b and 69b are position holding means constituting the present invention.

  Hereinafter, the operation and effect of the overturn preventing device 1 will be described while explaining the method of using the overturn preventing device 1 according to the embodiment described above. In the following description, a load placed on a pallet into which a fork of a forklift (not shown) is inserted is placed on the pallet with the pallet placed on the fall prevention device 1 or a load on the loaded pallet Will be described on the premise that the above-mentioned forklift lifts and moves it.

  First, as shown in FIG. 2, FIG. 3 or FIG. 5, in the state before the pallet over which the above-mentioned figurines are placed, the overturn preventing device 1 is the uppermost position as shown in FIG. The front end (front end) of the load support member 17 is spaced above the upper surface of the bottom plate 2 and the rear end (rear end) is the bottom plate 2. It abuts on the upper surface of the and is inclined slightly as a whole. The front end (front end) of the left pivot rod 15 and the right pivot rod 16 is also spaced upward above the upper surface of the bottom plate 2 and is slightly inclined as a whole. Hereinafter, the state of the overturn preventing member 45, the load support member 17, the left pivoting rod 15, the right pivoting rod 16 and the like shown in FIG. 2 or 5 will be referred to as a standby state. Then, in the standby state of the overturn prevention device 1, the pallet P on which the above-described object W is placed is supported by the left and right forks not shown, and the fork lift drives the left side plate 2 and the right side plate 3. After being moved into the overturn prevention device 1 from the inside, when being gradually lowered, the load of the pallet P and the load W is gradually supported by the load support member 17 and the load support member The lower surface 17 abuts on the upper surface of the bottom plate 2. The left pivot rod 15 is guided by the first left guide groove 51 with the downward movement of the load support member 17 with the left support shaft 13 as a pivot center and the right pivot rod. 16 against the elastic force of the left elastic member 47 or the right elastic member 48 with the right support shaft 14 as a rotation center while being guided by the first right guide groove 56, as shown in FIG. Rotate clockwise. In addition, even if the left pivot rod 15 and the right pivot rod 16 pivot, the load support member 17 pivots about the left pivot shaft 21 and the right pivot shaft 22 as described above. Finally, the lower surface of the load support member 17 abuts on the upper surface of the bottom plate 2 (see FIG. 4).

  Further, when the left pivot rod 15 and the right pivot rod 16 pivot as described above, the first left link member 28 is pulled by the weight of the overturn preventing member 45 while the second link member 28 and the second link member 28 are pulled. The first right link member 36 is moved while being guided by the fifth left guide grooves 52 and 55, and the first right link member 36 is pulled by its own weight of the overturn preventing member 45 while the second and fifth right guides are moved. It moves while being guided by the grooves 57 and 60 respectively. Then, when the first left link member 28 and the first right link member 36 are moved, the second left link member 30 and the second right link member 38 are moved by the movement of the first left link member 28 and the first right link member 36. While moving while being guided by the third and fourth left guide grooves 53, 54 or the third and fourth right guide grooves 58, 59, respectively, the overturn preventing member 45 is moved from the standby position to the left lifting guide Lowered while being guided by the member 68 and the right raising and lowering guide member 69, finally, as shown in FIG. 4 or FIG. 7, lower end positions of the left raising and lowering guide member 68 and the right raising guide member 69 The position facing the side) is lowered to the position where the fork can be inserted below the insertion space S (see FIG. 7). When the work for supporting the pallet P on which the load W is placed is supported by the load support member 17 as described above, the forklift is then driven to extract the fork from the pallet P. Then, in this state, when the load W on the pallet P supported by the overturn prevention device 1 is inclined to the front side due to the occurrence of an earthquake or the like, it abuts on the back surface of the overturn prevention member 45. The front plate portion 68b formed on the left elevating guide member 68 and the front plate portion 69b formed on the right elevating guide member 69 are positioned in front of the left and right ends of the 45, and therefore, they are further inclined It does not fall or fall.

  When the pallet P supported on the load supporting member 17 and on which the object W is placed is taken out (removed), the fork is inserted from the insertion space S formed below the lowered overturn preventing member 45. Are inserted into the interior of the pallet P, and the pallet P is lifted (lifted) by driving the forklift. Due to the rise of the pallet P, the load support member 17, the left pivot rod 15 and the right pivot rod 16 return to the standby state by the elastic force of the left elastic member 47 and the right elastic member 48, respectively. Along with these operations, the first and second left link members 28, 30 and the first and second right link members 38, 38 also operate in the opposite direction to the above-described pivoting movement, and By the operation, the overturn preventing member 45 also returns to the standby state. Therefore, by driving the forklift, the pallet P on which the above-described object W is placed can be taken out from the inside of the overturn prevention device 1 to the outside.

  As described above, the overturn preventing device 1 according to the above embodiment does not use any electrically driven configuration as a configuration of the device for preventing the mounted object from falling and falling due to vibration such as an earthquake. Therefore, even when a power failure occurs due to the occurrence of the above-mentioned earthquake or the like, it can always function. Further, in the overturn preventing device 1, the first rotating lever 15 is rotated in the same manner as the forceps, and the first linear body 43 connected to the left end side of the overturn preventing member 45 is the first And the second left link members 28 and 30 are interposed, and between the right pivot rod 16 and the right linear body 44 connected to the right end side of the overturn prevention member 45, the first and second Right link members 38 and 38 are interposed, and the left pivot rod 15 and the right pivot rod 16 are provided on the front side midway portion of the left pivot rod 15 and the right pivot rod 16 Centering on the left support shaft 13 or the right support shaft 14 pivotally supported at the front end of the load support member 17 or the left pivot rod 15 or the right pivot rod 16 as a pivot point. More than the distance to the left support shaft 13 or the right support shaft 14, the point of action is from the left support shaft 13 or the right support shaft 14 which is the fulcrum. Since the distance to the position of the rear end of the left pivot rod 15 and the right pivot rod 16 is much longer, the overturn preventing member 45 is moved up and down over a distance considerably longer than the distance the load support member 17 descends. It can be done.

  Although the first and second left link members 28 and 30 and the first and second right link members 36 and 38 are constituent elements in the fall prevention device 1 according to the above embodiment, the present invention As a fall prevention device 71 according to the second embodiment, without using these as constituent elements, as schematically shown in FIG. 8, the rear end side of the left rotation rod 15 and the left linear body 43 may be directly connected, and the right pivot rod 16 and the right linear body 44 may be directly connected (although illustration is omitted). Even with the overturn prevention device 71 configured as described above, the lifting and lowering range of the overturn prevention member 45 is shortened as compared with the overturn prevention device 1 according to the embodiment described above, but the load of the load W By being supported by the load support member 17, the overturn preventing member 45 can be moved up and down over a distance longer than the distance by which the load support member 17 descends.

  In the overturn preventing devices 1 and 71 according to the above embodiments, a rod-like body (overturn preventing member 45) having a length in the horizontal direction is illustrated and described as the overturn preventing member constituting the present invention. The fall prevention member constituting the above invention is not limited to a rod-like body, but may be a plate-like body, for example, a rod-like body having a length in the horizontal direction like a ladder is rotatably connected vertically And ascends and is bent so that a part of the upper end side is guided by the second left linear body guide member 64 and the second right linear body guide member 66, Also good. Further, in the overturn preventing devices 1 and 71 according to the above-described embodiments, the plate body (load support member 17) formed in a rectangular shape is illustrated and described as a load support member constituting the present invention. The load supporting member constituting the invention is, for example, a rod-like member, a wire or a belt stretched in the horizontal direction, or the like as long as it supports at least all or part of the load of the mounting object. good.

  Next, a fall prevention device 81 according to a third embodiment will be described in detail with reference to the drawings.

  As shown in FIG. 9, the overturn preventing device 81 is a left frame 82 and a right frame 83 which are each formed into a frame shape by a hollow steel frame and are formed into the same shape, and the left frame 82 and the right. The frame 83 is connected to four horizontal weirs 84. The left frame 82 is formed into the same length and parallel to each other, and the left ridge 82a and the lower left ridge 82b, and the left front ridge 82c and the left back ridge 82d formed to the same length and parallel to each other The right frame 83 is composed of an upper right eyelid 83a and a lower right eyelid 83b, and a right front eyelid 83c and a right rear eyelid 83d. Then, the first left vertical weir 82e is suspended from slightly behind the center of the lower surface of the upper left weir 82a constituting the left frame 82, and the slightly above the center of the back of the left front weir 82c from above A left parallel hook (left stopper constituting the present invention) 82f having a front end fixed to the lower end of the first left vertical hook 82e is fixed in parallel with the upper left hook 82a, and the first left vertical hook 82e and A left fixed rotation shaft 87 is provided in the horizontal direction at a fixed position with the left parallel rod 82f. A second left vertical weir 82g parallel to the left back weir 82d is suspended from the lower surface of the rear end side middle portion of the upper left weir 82a, and the lower end of the second left vertical weir 82g The front face of the left rear hook 82d is connected by a left connecting rod 82h. Further, on the front end side of the inner side surface of the lower left collar 82b constituting the left frame 82, the other left pivot shaft 89 is provided so as to protrude on the right frame 83 side. Further, a shaft support column 90 is erected at a rear end side middle portion of the upper surface of the lower left collar 82b, and a left support shaft 91 constituting the present invention projects to the right frame 83 side on this shaft support column 90. It is set up. In the right frame 83, the first left vertical hook 82e, the left parallel hook 82f, the left fixed turning shaft 87, the second left vertical hook 82g, the left connecting rod 82h, and the other left turning shaft 89. The first right vertical rod 83e, the right parallel rod 83f, the right fixed rotary shaft 88, the second right vertical rod 83g, the right connecting rod 83h, which are formed in the same shape as the shaft support column 90 and the left support shaft 91 The other right pivot shaft 92 (see FIG. 11), a shaft support pillar 94, and a right support shaft 93 are provided. The right parallel hook 83f is a right stopper that constitutes the present invention.

  The left pivot rod 95 constituting the present invention is rotatably attached to the left support shaft 91. Further, the right pivot rod 96 constituting the present invention is rotatably attached to the right support shaft 93. An insertion shaft (reference numeral is omitted) through which the left support shaft 91 is inserted is formed in a rear end side middle part of the left rotation rod 95, and a connection shaft (reference numeral is omitted) is formed at the front end. One end of the left link member 98 is rotatably connected. Further, an insertion shaft (reference numeral is omitted) through which the right support shaft 93 is inserted is formed at a rear end side middle part of the right rotation rod 96, and a connection shaft (reference numeral is omitted) at the front end. One end of the right link member 99 is rotatably connected via the two. Long holes 98a and 99a are formed on the other end sides of the left link member 98 and the right link member 99, respectively.

  The load support member 101 of the present invention is disposed between the lower left collar 82b of the left frame 82 and the lower right collar 83b of the right frame 83. The load support member 101 is a plate shaped in a rectangular shape, and supports the entire load of the load as described later. The front of the left end (of the lower surface) of the load support member 101 is The other left pivot shaft 89 is rotatably supported, and the front end of the right end is pivotably supported by the other right pivot shaft 92 (see FIG. 11). Further, a left shaft support piece 102 is provided upright on the left side of the rear end of the load support member 101, and the left shaft support piece 102 is fixed to the upper end side of the left shaft support piece 102 via the left pivot shaft 103. It is pivotally connected to the rear end of the pivot rod 95. Further, the right shaft support piece 105 is provided upright on the left side of the rear end of the load support member 101, and the right shaft support piece 105 is fixed to the upper end side of the right shaft support piece 105 via the right pivot shaft 106. It is pivotally connected to the rear end of the pivot rod 96.

  Further, the rear end side of the load support member 101 is biased upward by the left elastic member 109 and the right elastic member 110. One end of the left elastic member 109 is engaged with the left connecting rod 82h, and the lower end is engaged with the left shaft support piece 102. Further, one end of the right elastic member 110 is engaged with the right connection rod 83 h, and the lower end is engaged with the right shaft support piece 105. In the overturn preventing device 81 according to the third embodiment, the overturn preventing member 112 is a component. The overturn preventing member 112 is, as will be described later, a rectangular overturn preventing member main body 112a (see FIG. 9 or FIG. 13) that moves to the front of the load W placed on the load support member 101. The left arm 112b has its proximal end fixed to the left end of the back surface of the overturn preventing member main body 112a, and the right arm 112c has its proximal end fixed to the right end of the back surface of the overturn preventing member main body 112a. The sliding shafts 112d and 112e are inserted into the long holes 98a and 99a formed on the other end side of the left link member 98 or the right link member 99 on the tip side of the left arm 112b and the right arm 112c. Is fixed. In the middle of the left arm 112b and the right arm 112c, when the overturn preventing member main body 112a is moved to the front of the mounting object W placed on the load supporting member 101, as will be described later. The left contact member 112f and the right contact member 112g which are in contact with the upper surface of the left parallel wedge 92f or the right parallel wedge 83f, which is the left stopper or the right stopper constituting the present invention, are fixed. In addition, an insertion hole (not shown) through which the left fixed rotation shaft 87 is inserted is formed in the middle portion on the front end side of the left arm 112b, and the right fixation on the front end side of the right arm 112c is the right fixed An insertion hole (not shown) into which the rotation shaft 88 is inserted is formed. Therefore, as described later, the overturn preventing member 112 is pivoted about the left fixed pivot shaft 87 and the right fixed pivot shaft 88.

  Hereinafter, the operation and effects will be described while describing the operation of the overturn preventing member 81 according to the third embodiment described above. First, in the standby state before the load W is placed on the load support member 101, as shown in FIG. 10 or 11, the rear end side of the load support member 101 is slightly elevated compared to the front end side. The overturn prevention member main body 112a constituting the overturn prevention member 112 is in a substantially horizontal state at the upper side. The sliding shaft 112d fixed to the left arm 112b is located at the lowermost (one end) side of the long hole 98a formed in the left link member 98, and similarly fixed to the right arm 112c. The sliding shaft 112e is located at the lowermost (one end) side of the long hole 99a formed in the right link member 99 (see FIG. 10). In this state, the pallet P on which the above-mentioned object W is placed is supported by the left and right forks (not shown) and moved into the load accommodating space formed in the overturn preventing device 1 by the drive of the forklift. Then, when the load supporting member 101 is gradually lowered, the load of the pallet P and the load W is gradually supported by the load supporting member 101, and the load supporting member 101 includes the left elastic member 99 and the right elastic. The rear end side descends (rotates) about the other left rotary shaft 89 and the other right rotary shaft 92 against the elastic force of the member 110. Then, with the descent (rotation) operation of the load support member 101, the left rotation rod 95 takes the left support shaft 91 as a rotation center and the right rotation rod 96 makes the right rotation shaft. It rotates in the clockwise direction in FIG. 10 with 93 as the rotation center. As described above, when the left pivoting rod 95 pivots, the left link member 98 ascends with its one end side as the pivot center and pushes up the left arm 112 b constituting the overturn preventing member 112. Further, when the right pivot rod 96 pivots, the right link member 99 ascends while setting the one end side as a pivot center, and pushes up the right arm 112 c constituting the overturn preventing member 112.

  Thus, the entire overturn preventing member 112 pushed up by the left link member 98 and the right link member 99 has the left fixed rotation shaft 87 and the right fixed rotation shaft 88 as a rotation center, as shown in FIG. It rotates counterclockwise and eventually stops at the position shown in FIG. 12 or 13. This state is the overturn preventing state after the placing object W (and the pallet P) is placed on the load supporting member 101. In the overturn preventing state, the left contact member 112f is the left parallel hook The right contact member 112g is in contact with the rightward transition rod 83f. The sliding shaft 112d fixed to the left arm 112b is located at the other end of the long hole 98a formed in the left link member 98, and similarly fixed to the right arm 112c. The sliding shaft 112e is located on the most other end side of the long hole 99a formed in the right link member 99 (see FIG. 12). Therefore, even if a force is applied downward to the overturn preventing member 112, it does not descend further, and the overturn preventing member 112 is fixed to the left fixed rotation shaft 87 and the right fixed rotation shaft 88. Therefore, even if the above-mentioned object W comes in contact with the overturn preventing member main body 112 a due to vibration such as an earthquake, there is no risk of falling over. As shown in FIG. 13, in the above-described overturning prevention state, a fork of a forklift (not shown) is inserted from the front side under the overturning preventing member main body 112 to lift the load W from above the load supporting member 101. An insertion space S is formed (see FIG. 13).

  Therefore, even in the case of the overturn preventing device 81 of the mounting object according to the third embodiment described above, the structure of the device for preventing the mounting object from falling over and falling due to vibration such as earthquake is electrically Since the drive configuration is not used at all, even if a power failure occurs due to the occurrence of the above-mentioned earthquake or the like, it can always function.

DESCRIPTION OF SYMBOLS 1 Fall prevention device of a load 2 bottom plate 3 left plate 4 right plate 13 left support shaft 14 right support shaft 15 left rotation rod 16 right rotation rod 17 load support member 21 left rotation shaft 22 right rotation shaft 27 first Left link side convex portion 28 first left link member 29 second left link side convex portion 30 second left link member 31 third left link side convex portion 32 fourth left link side convex portion 33 fifth Left link convex part 35 first right link convex part 36 first right link member 37 second right link convex part 38 second right link member 40 third right link convex part 41 fourth Right link side convex portion 42 fifth right link side convex portion 43 left linear body 44 right linear body 45 overturn preventing member 47 left elastic member 48 right elastic member 51... 55 first to fifth left guides Grooves 56 ... 60 First to fifth right guide grooves 63 First left linear body guide member 64 Second left Linear body guide member 65 first right linear body guide member 66 second right linear body guide member 68b front plate portion 69b of left raising and lowering guide member front plate portion 81 of right raising and lowering guide member 82 left frame 82f left parallel rod 83 right frame 83f right parallel rod 89 other left rotation shaft 91 left support shaft 92 other right rotation shaft 93 right support shaft 95 left rotation rod 96 right rotation rod 98 left link member 99 right link member 101 load support member 103 one left pivot shaft 109 left elastic member 110 right elastic member 112 overturn preventing member 112 a overturn preventing member main body 112 b left arm 112 c right arm 112 f left contact member 112 g right contact member W mounted Figurine P Palette S Insertion Space

Claims (11)

It is an overturn preventing device of a placing object, the front side being released, and a placing thing storage space in which the placing thing is received is formed inside,
It has a length in the front-rear direction, and a left pivoting rod rotatably disposed about the left pivot as a pivot, and a length in the front-rear direction, pivotable about the right pivot With the right pivot rod, which is located at
The left end is connected to the front end side or the rear end side of the pivoting rod, and the right end is connected to the front end side or the rear end of the right pivoting rod, and a load support for supporting all or a part of the load of the above described installation Members,
An elastic member that biases the front end side or the rear end side of the load support member or the front end side or the rear end side of the left pivot rod or the right pivot rod to always be positioned upward;
In the standby state before the placed object is placed on the load support member, the standby state waits at a standby position above or diagonally above the load support member, and falls after the placed object is placed on the load support member A fall prevention member which moves from the standby position to the front side of the object in the prevention state;
The left pivot supports the left pivot at either the front end side or the rear end of the left pivot, and the right pivot is on the front end or the rear end of the right pivot. Support the right pivot rod at either one,
The left end of the overturn preventing member and the left pivoting rod, and the right end of the overturn preventing member and the right pivoting rod are each a linear connecting member made of a linear body or a single or a plurality of link members Are connected to each other by a link connecting member or a composite connecting member composed of the linear body and a plurality of link members,
The lowering operation of the load supporting member due to the placement of the above-mentioned figurine by the pivotal movement of each pivoting rod about the pivot and the operation of each connecting member associated with the pivoting An apparatus for preventing overturning of a placing object, which transmits and moves the overturn preventing member to the front side of the placing article.   When the overturn prevention member is put into the overturn prevention state, an insertion space into which load lifting means for lifting the above described load from above the load supporting member is inserted from the front side. The device for preventing overturning of a mounting object according to claim 1, wherein the device is formed below the overturn preventing member. The above-mentioned figurine accommodation space is formed by a bottom plate, a left side plate standing on the left side of the bottom plate, and a right side plate standing upright on the right side of the bottom plate and facing the left side plate.
The load support member is disposed above the bottom plate, and when the load support member descends against the elastic force of the elastic member due to the load of the mounting object, the load support member abuts on the upper surface of the bottom plate. The fall prevention apparatus of the mounting material of Claim 1 or 2. The overturn preventing member is located on the upper end side of the front end side of the left side plate and the right side plate in the standby state, and is located on an intermediate portion on the front end side of the left side plate and the right side plate in the overturn preventing state. Located on the front side of the above-mentioned figurine,
Position holding means for holding the position of the overturn preventing member is disposed on the front surface of the left side plate and the right side plate when the above-mentioned object comes in contact with the back surface of the overturn preventing member.
The left end of the overturn preventing member and the left pivot rod are connected by a linear body forming the linear connecting member, or connected to an end portion of a linear body forming the composite connecting member, Further, the right end of the overturn preventing member and the right pivot rod are connected by a linear body forming the linear connecting member, or connected to an end portion of a linear body forming the composite connecting member. And
When the load is placed on the load support member, the left pivoting rod pivots about the left support shaft, and the right pivoting rod pivots about the right support shaft. 4. The overturn preventing device according to claim 3, wherein the overturn preventing member is lowered to reach the overturn preventing state through the operation of the linear connecting member or the combined connecting member. The left end of the overturn preventing member and the left pivoting rod are connected to each other by the composite connecting member, and the right end of the overturn preventing member and the right pivoting rod are connected to each other by the composite connecting member With
One end of a first left link member constituting the combined connecting member is rotatably connected to the rear end of the left pivot rod, and the other end of the first left link member is combined with the one end of the first left link member. One end of a second left link member constituting the connecting member is rotatably connected, and the other end of the second left link member constitutes the composite connecting member and the middle portion is a linear body guide member One end of the left linear body to be guided by is fixed, and the other end of the left linear body is fixed to the left end of the fall prevention member,
One end of a first right link member constituting the combined connecting member is rotatably connected to the rear end of the right pivot rod, and the other end of the first right link member is combined with the one end of the first right link member. One end of a second right link member constituting the connecting member is rotatably connected, and the other end of the second right link member constitutes the composite connecting member and the middle portion is a linear body guide member One end of the right linear body to be guided by is fixed, the other end of the right linear body is fixed to the right end of the anti-fall member,
When the load is placed on the load support member, the left pivoting rod pivots about the left support shaft, and the right pivoting rod pivots about the right support shaft. 5. The overturn preventing device for a mounting object according to claim 3, wherein the overturn preventing member is lowered to reach the overturn preventing state through the operation of the composite connecting member. A left convex portion protruding in the left side plate direction is formed at a rear end or rear end side middle portion of the left turning rod, and the left convex portion is inserted into the left side plate and the left convex side is formed. A left guide groove is formed corresponding to the movement trajectory of the
A right convex portion protruding in the right side plate direction is formed at a rear end or rear end side middle portion of the right rotation rod, and the right convex portion is inserted into the right side plate and the right convex portion is formed. A right guide groove corresponding to the movement trajectory of the
6. The left pivot rod according to any one of claims 3 to 5, wherein the left pivot rod is guided by the left guide groove and the right pivot rod is guided by the right guide groove. Overturn prevention device of the load of the. A left link side convex portion protruding in the left side plate direction is formed at an end portion and / or an intermediate portion of the first and second left link members, and the left side link member is provided with the left link side A left link side guide groove is formed corresponding to a movement locus along which the convex portion moves;
A right link side convex portion protruding in the right side plate direction is formed at an end portion and / or a midway portion of the first and second right link members, and the right side link member is provided with the right side link side The right link side guide groove corresponding to the movement locus where the convex part moves is formed,
The first and second left link members are pivotally moved while being guided by the left link side guide groove, and the first and second right link members are guided by the right link side guide groove. The fall prevention apparatus of the mounting material of Claim 5 characterized by these. The load support member is formed into a plate shape, and
The left end of the load support member and the front end side or the rear end side of the left pivot rod are rotatably connected to each other by a left pivot shaft,
The right end of the load support member and the front end side or the rear end side of the right rotation rod are rotatably connected to each other by a right rotation shaft,
8. The load supporting member according to any one of claims 3 to 7, wherein the lower surface of the load supporting member abuts on the upper surface of the bottom plate when all or part of the load of the load is supported by the load supporting member. The fall prevention device of the mounting body as described in. The above-mentioned figurine housing space is surrounded by a left frame formed in a square shape, a right frame formed in a square shape, and a plurality of horizontal weirs connecting the left frame and the right frame,
The load support member is formed into a plate shape, and
The front end side or the rear end side of the left end of the load support member and the front end side or the rear end side of the left rotation rod are mutually connected rotatably by one left rotation shaft, and the left end of the load support member A rear end side or a front end side of the frame and the left frame are rotatably connected by the other left rotation shaft,
The front end side or the rear end side of the right end of the load support member and the front end side or the rear end side of the right rotation rod are mutually connected rotatably by one right rotation shaft, and the right end of the load support member 2. The overturn preventing device for a mounting object according to claim 1, wherein a rear end side or a front end side of the second frame is pivotally connected to the right frame by the other right pivot shaft. The left end of the overturn preventing member and the left pivoting rod are connected via the link connecting member, and the right end of the overturn preventing member and the right pivoting rod are connected via the link connecting member With
When the load is placed on the load support member, the left pivoting rod pivots about the left support shaft, and the right pivoting rod pivots about the right support shaft. The overturn preventing member is configured to draw an arc from the upper end side of the left frame and the right frame to the front side of the mounted object to reach the overturn preventing state through the operation of the link connecting member. The fall prevention device of the mounting object according to claim 9 which is said. In the overturn preventing state, the overturn preventing member is a plate-like overturn preventing member main body positioned in front of the mounted object;
The front end is fixed to the left side of the back surface of the overturn prevention member main body, and the rear end is extended to the rear of the overturn prevention member main body and the left arm rotatably connected with the link member;
A front end is fixed to the right of the back surface of the overturn prevention member main body, and a rear end is extended to the rear of the overturn prevention member main body, and a right arm rotatably connected to the link member;
Equipped with
A left contact member is fixed to the left arm, and a right contact member is fixed to the right arm,
The left frame has a length in the horizontal direction inside the left frame, and the left stopper with which the left contact member abuts is fixed in the overturn prevention state, and the inside of the right frame is in the overturn prevention state 11. The overturn preventing device for a mounting object according to claim 9, wherein a right stopper having a length in the horizontal direction and in which the right contact member abuts is fixed.

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