JP6188318B2 - Fall prevention structure - Google Patents
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- JP6188318B2 JP6188318B2 JP2012265612A JP2012265612A JP6188318B2 JP 6188318 B2 JP6188318 B2 JP 6188318B2 JP 2012265612 A JP2012265612 A JP 2012265612A JP 2012265612 A JP2012265612 A JP 2012265612A JP 6188318 B2 JP6188318 B2 JP 6188318B2
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Description
本発明の一形態は、落下防止構造に関する。 One embodiment of the present invention relates to a fall prevention structure.
従来から、対象物が構造物から落下することを防止する落下防止構造が知られている。例えば下記特許文献１には、可搬式の物品支持具を載置支持部材にて載置支持するように構成された物品収納棚が記載されている。この物品収納棚では、載置支持部材が、物品収納棚の本体に対して転動体を介して水平方向に往復自由移動自在に支持されている。また、下記特許文献２には、ビーム上に耐震ストッパを設置して、そこに商品を積んだパレットを保管してビームとパレットの滑り防止をする耐震ストッパが記載されている。 Conventionally, a fall prevention structure for preventing an object from falling from a structure is known. For example, Patent Document 1 below describes an article storage shelf configured to place and support a portable article support with a placement support member. In this article storage shelf, the placement support member is supported so as to be freely reciprocally movable in the horizontal direction via rolling elements with respect to the main body of the article storage shelf. Further, Patent Document 2 described below describes an earthquake-resistant stopper in which an earthquake-resistant stopper is installed on a beam and a pallet on which products are loaded is stored to prevent the beam and the pallet from slipping.
しかし、上記の特許文献１に記載の物品収納棚は、落下防止のための機構が大掛かりになっているという問題があった。また、上記の特許文献２に記載の耐震ストッパは、ビームに設けられたクッションでパレットを保持することができても、パレット上の商品が滑り落ちる場合があった。そこで、簡易な構成にて、落下防止の性能を向上させることが要請されている。 However, the article storage shelf described in Patent Document 1 has a problem that a mechanism for preventing the fall is large. Moreover, even if the earthquake-resistant stopper described in Patent Document 2 described above can hold the pallet with a cushion provided on the beam, the product on the pallet may slide down. Therefore, it is required to improve the fall prevention performance with a simple configuration.
本発明の一形態に係る落下防止構造は、対象物が構造物から落下することを防止する落下防止構造であって、上面及び下面を有し、下面側で構造物に支持され、上面側に対象物が載置される載置部材と、載置部材と連結され、載置部材の振動を減衰させる減衰部材と、を備え、上面と対象物との間の摩擦力は、下面と構造物との間の摩擦力よりも大きい。 A fall prevention structure according to an embodiment of the present invention is a fall prevention structure that prevents an object from falling from a structure, and has an upper surface and a lower surface, and is supported by the structure on the lower surface side, and on the upper surface side. A mounting member on which the object is mounted; and a damping member that is coupled to the mounting member and attenuates the vibration of the mounting member. The frictional force between the upper surface and the object is reduced between the lower surface and the structure. It is larger than the friction force between.
このような形態によれば、載置部材の上面と対象物との間の摩擦力が、下面と構造物との間の摩擦力よりも大きい。従って、構造物が振動した際は、対象物が上面に対して相対移動を行う前に、載置部材の下面が構造物に対して相対移動を行う。すなわち、対象物は載置部材と共に構造物に対して相対移動を行う。載置部材は減衰部材に連結されているため、載置部材が対象物と共に相対移動することによって、減衰部材は載置部材及び対象物の振動を対象物が移動を始めた瞬間から確実に減衰させることができる。これにより、対象物が落下することを防止できる。また、このような落下防止構造を載置部材と減衰部材を連結した簡易な構成で実現できる。以上により、簡易な構成にて、落下防止の性能を向上させることができる。 According to such a form, the frictional force between the upper surface of the mounting member and the object is larger than the frictional force between the lower surface and the structure. Therefore, when the structure vibrates, the lower surface of the mounting member relatively moves with respect to the structure before the object relatively moves with respect to the upper surface. That is, the object moves relative to the structure together with the mounting member. Since the mounting member is connected to the damping member, the damping member reliably attenuates the vibration of the mounting member and the object from the moment when the object starts moving by the relative movement of the mounting member together with the object. Can be made. Thereby, it can prevent that a target object falls. Further, such a fall prevention structure can be realized with a simple configuration in which the placing member and the damping member are connected. As described above, the fall prevention performance can be improved with a simple configuration.
別の形態に係る落下防止構造では、載置部材の下方に設けられた支持部材を更に備え、減衰部材は、載置部材の下面と連結されると共に、支持部材と連結されていてもよい。 In the fall prevention structure which concerns on another form, it is further provided with the supporting member provided in the downward direction of the mounting member, and the attenuation member may be connected with the lower surface of the mounting member, and may be connected with the supporting member.
さらに別の形態に係る落下防止構造では、載置部材の上面の摩擦係数が、下面に比して高められていてもよい。 In the fall prevention structure according to another embodiment, the friction coefficient of the upper surface of the mounting member may be increased as compared with the lower surface.
さらに別の形態に係る落下防止構造では、載置部材の縁部には、上方へ突出する突出部が設けられていなくてもよい。 Furthermore, in the fall prevention structure which concerns on another form, the protrusion part which protrudes upwards does not need to be provided in the edge part of the mounting member.
さらに別の形態に係る落下防止構造では、減衰部材は、載置部材の振動に伴い変形した場合に構造物と接触しないように、当該構造物から離間していてもよい。 Furthermore, in the fall prevention structure which concerns on another form, when a damping member deform | transforms with the vibration of a mounting member, you may space apart from the said structure so that it may not contact a structure.
本発明の一側面によれば、簡易な構成にて、落下防止の性能を向上させることができる。 According to one aspect of the present invention, the fall prevention performance can be improved with a simple configuration.
以下、添付図面を参照しながら本発明の実施形態を詳細に説明する。なお、図面の説明において同一又は同等の要素には同一の符号を付し、重複する説明を省略する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.
まず、図１及び図２を参照して、本実施形態に係る落下防止構造１が適用された構造物１００の一例について説明する。図１及び図２に示す構造物１００として、倉庫などに設置される収納棚が挙げられている。構造物１００に係る収納棚は、柱材１０１と梁材１０２，１０３と斜材１０４を組み合わせることによって構成されている。構造物１００に係る収納棚は、対象物５０を収納するための収納部１０５を上下方向に複数段（図１では３段）備えており、前面側から対象物５０を収納部１０５へ入れることができる。本実施形態では、互いの背面が隣り合うように、収納部１０５が二列に配置されているが、背面側に壁などが設けられてもよい。なお、図中では、構造物１００の横方向Ｄ１と、奥行き方向Ｄ２が示されている。 First, with reference to FIG.1 and FIG.2, an example of the structure 100 to which the fall prevention structure 1 which concerns on this embodiment was applied is demonstrated. As the structure 100 shown in FIGS. 1 and 2, a storage shelf installed in a warehouse or the like is cited. A storage shelf according to the structure 100 is configured by combining a column member 101, beam members 102 and 103, and a diagonal member 104. The storage shelf according to the structure 100 includes a plurality of storage units 105 (three levels in FIG. 1) in the vertical direction for storing the target object 50, and the target object 50 is put into the storage unit 105 from the front side. Can do. In the present embodiment, the storage portions 105 are arranged in two rows so that the back surfaces of each other are adjacent to each other, but a wall or the like may be provided on the back surface side. In the drawing, the horizontal direction D1 and the depth direction D2 of the structure 100 are shown.
本実施形態の構造物１００に係る収納棚では、奥行き方向Ｄ２に対向する一対の柱材１０１の組が、横方向Ｄ１に所定の間隔で配置される。各柱材１０１に対して収納部１０５の底部に該当する位置に、奥行き方向Ｄ２に延びて柱材１０１同士を連結する梁材１０２が設けられる。また、各梁材１０２または柱材１０１に対して、横方向Ｄ１に延びる梁材１０３Ａ，１０３Ｂが設けられる。ここでは、図２に示すように、収納部１０５の前面側の梁材を梁材１０３Ａとし、背面側の梁材を梁材１０３Ｂとする。対象物５０は、前面側の梁材１０３Ａ及び背面側の梁材１０３Ｂによって支持される。なお、図２において点線で示すように、梁材１０２と平行に延びる補助的な梁材１０２ｚを設けてもよいし、設けなくともよい。本実施形態では、対象物５０として、パレット５１及び当該パレット５１上に載置された物品５２が例示されている。パレット５１が梁材１０３Ａ，１０３Ｂに支持され、当該パレット５１の上に物品が載せられている。 In the storage shelf according to the structure 100 of the present embodiment, a pair of column members 101 facing in the depth direction D2 is arranged at a predetermined interval in the horizontal direction D1. A beam member 102 that extends in the depth direction D <b> 2 and connects the column members 101 is provided at a position corresponding to the bottom of the storage unit 105 with respect to each column member 101. Further, for each beam member 102 or column member 101, beam members 103A and 103B extending in the transverse direction D1 are provided. Here, as shown in FIG. 2, the beam member on the front side of the storage unit 105 is a beam member 103A, and the beam member on the back side is a beam member 103B. The object 50 is supported by the beam material 103A on the front side and the beam material 103B on the back side. In addition, as shown with a dotted line in FIG. 2, the auxiliary beam material 102z extended in parallel with the beam material 102 may be provided or may not be provided. In the present embodiment, as the object 50, a pallet 51 and an article 52 placed on the pallet 51 are illustrated. A pallet 51 is supported by the beam members 103 </ b> A and 103 </ b> B, and an article is placed on the pallet 51.
本実施形態に係る落下防止構造１は、構造物１００の収納部１０５に収納された対象物５０が収納部１０５の前面から落下（例えば、図１においてＦで示す状態）することを防止できる。特に、落下防止構造１は、パレット５１上に載置された物品５２がパレット５１及び収納部１０５から落下することを防止できる。図２に示すように、落下防止構造１は、構造物１００のうち、前面側の梁材１０３Ａに対して設けられている。図２では、一のパレット５１に対し、横方向Ｄ１における一端側と他端側の二か所に落下防止構造１が設けられている。ただし、落下防止構造１を何カ所に設けるかは特に限定されず、一か所でもよく、三か所以上であってもよい。対象物５０を収納部１０５に収納する際は、落下防止構造１が設けられている位置に、パレット５１が載せられる。 The fall prevention structure 1 which concerns on this embodiment can prevent the target object 50 accommodated in the accommodating part 105 of the structure 100 falling from the front surface of the accommodating part 105 (for example, the state shown by F in FIG. 1). In particular, the fall prevention structure 1 can prevent the article 52 placed on the pallet 51 from falling from the pallet 51 and the storage unit 105. As shown in FIG. 2, the fall prevention structure 1 is provided for the beam member 103 </ b> A on the front side of the structure 100. In FIG. 2, with respect to one pallet 51, the fall prevention structures 1 are provided at two locations on one end side and the other end side in the lateral direction D1. However, the number of places where the fall prevention structure 1 is provided is not particularly limited, and may be one or three or more. When the object 50 is stored in the storage unit 105, the pallet 51 is placed at a position where the fall prevention structure 1 is provided.
次に、図３を参照して、本実施形態に係る落下防止構造１の詳細な構造について説明する。図３に示すように、落下防止構造１は、対象物５０が載置される載置部材２と、載置部材２と連結されて当該載置部材２の振動を減衰させる粘弾性体３と、粘弾性体３を支持する支持部材４と、を備えている。 Next, with reference to FIG. 3, the detailed structure of the fall prevention structure 1 which concerns on this embodiment is demonstrated. As shown in FIG. 3, the fall prevention structure 1 includes a placement member 2 on which an object 50 is placed, a viscoelastic body 3 that is connected to the placement member 2 and attenuates vibration of the placement member 2. And a support member 4 that supports the viscoelastic body 3.
載置部材２は、少なくとも上面６及び下面７を有する部材である。本実施形態では、載置部材２は、板材によって構成されており、載置部材２の材料は、例えば鋼やプラスチックなどであってよい。載置部材２の形状は奥行き方向Ｄ２に水平に延びる矩形状の形状をなしている。載置部材２の前端部２ａ側の一部の領域は梁材１０３Ａに支持されており、当該領域よりも背面側は、前側の梁材１０３Ａと後側の梁材１０３Ｂとの間の空間部ＳＰ中に配置される（図２参照）。載置部材２の後端部２ｂ側の一部の領域は、粘弾性体３と連結される。なお、図３に示す例では、載置部材２の前端部２ａは、梁材１０３Ａの前面１０３ｂよりも奥行き方向Ｄ２における前方へ突出している。ただし、振動時において載置部材２の前端部２ａが梁材１０３Ａの背面１０３ｃから落下しない範囲であれば、載置部材２の前端部２ａは、梁材１０３Ａの上面１０３ａに配置されていてよい。なお、載置部材２は、対象物５０を載置することができる限り形状や大きさは特に限定されない。また、載置部材２は、少なくとも上面６及び下面７を有していればよく、板状でなくとも棒状や箱状の部材であってもよい。載置部材２の前端部２ａ側の縁部には、上方へ突出するストッパ用の突出部１５が設けられていない。すなわち、前端部２ａ側の縁部は上面６と連続した平面をなしている。ただし、載置部材２にストッパ用の突出部１５を設けてもよい。 The mounting member 2 is a member having at least an upper surface 6 and a lower surface 7. In the present embodiment, the mounting member 2 is made of a plate material, and the material of the mounting member 2 may be, for example, steel or plastic. The mounting member 2 has a rectangular shape extending horizontally in the depth direction D2. A partial region on the front end 2a side of the mounting member 2 is supported by the beam member 103A, and the back side of the region is a space between the front beam member 103A and the rear beam member 103B. It is arranged in the SP (see FIG. 2). A partial region on the rear end 2 b side of the mounting member 2 is connected to the viscoelastic body 3. In the example shown in FIG. 3, the front end 2a of the mounting member 2 protrudes forward in the depth direction D2 from the front surface 103b of the beam member 103A. However, the front end 2a of the mounting member 2 may be disposed on the upper surface 103a of the beam member 103A as long as the front end 2a of the mounting member 2 does not fall from the back surface 103c of the beam member 103A during vibration. . In addition, as long as the mounting object 2 can mount the target object 50, a shape and a magnitude | size will not be specifically limited. Moreover, the mounting member 2 should just have the upper surface 6 and the lower surface 7, and may be a rod-shaped or box-shaped member even if it is not plate-shaped. A protrusion 15 for a stopper that protrudes upward is not provided at the edge of the mounting member 2 on the front end 2a side. That is, the edge on the front end 2 a side forms a flat surface that is continuous with the upper surface 6. However, you may provide the protrusion part 15 for stoppers in the mounting member 2. FIG.
載置部材２は、下面７側で構造物１００の梁材１０３Ａに支持される。載置部材２は、下面７のうち前端部２ａ側の一部の領域が梁材１０３Ａの上面１０３ａと面接触して支持される。載置部材２の下面７は、梁材１０３Ａに対して固定されておらず、上面１０３ａ上を移動可能である。載置部材２の下面７の後端部２ｂ側の一部の領域には、粘弾性体３が固定されている。載置部材２の下面７のうち、梁材１０３Ａに支持される部分及び粘弾性体３が固定される部分以外の領域は、他のいずれの部材とも接触していない。載置部材２は、上面６側に対象物５０が載置される。本実施形態では、載置部材２の上面６上に対象物５０のパレット５１の下面５１ａが面接触するように載置される。 The mounting member 2 is supported by the beam member 103A of the structure 100 on the lower surface 7 side. The placement member 2 is supported in such a manner that a part of the lower surface 7 on the front end 2a side is in surface contact with the upper surface 103a of the beam member 103A. The lower surface 7 of the mounting member 2 is not fixed to the beam member 103A, and can move on the upper surface 103a. The viscoelastic body 3 is fixed to a partial region on the rear end 2b side of the lower surface 7 of the mounting member 2. Of the lower surface 7 of the mounting member 2, the region other than the portion supported by the beam member 103 </ b> A and the portion to which the viscoelastic body 3 is fixed is not in contact with any other member. As for the mounting member 2, the target object 50 is mounted in the upper surface 6 side. In this embodiment, the lower surface 51a of the pallet 51 of the target object 50 is placed on the upper surface 6 of the placement member 2 so as to come into surface contact.
載置部材２の上面６と対象物５０のパレット５１との間の摩擦力は、載置部材２の下面７と構造物１００の梁材１０３Ａとの間の摩擦力よりも大きい。すなわち、梁材１０３Ａに対する下面７は、パレット５１に対する上面６より滑りやすい。梁材１０３Ａに対する載置部材２の滑り荷重は、載置部材２に対するパレット５１の滑り荷重よりも小さい。具体的には、上面６と対象物５０との間の摩擦力を高くする処理が施されると共に、下面７と構造物１００との間の摩擦力を低くする処理が施された構造を採用してよい。または、上面６と対象物５０との間の摩擦力を高くする処理が施されると共に、下面７と構造物１００との間には特別な処理が施されない構造を採用してよい。または、上面６と対象物５０との間には特別な処理が施されず、下面７と構造物１００との間の摩擦力を低くする処理が施された構造を採用してよい。なお、本実施形態では、上面６に対する対象物５０はパレット５１であり、当該パレット５１の材料は、プラスチックや木材などである。下面７に対する構造物１００は梁材１０３Ａであり、当該梁材１０３Ａの材料は、鋼材などである。このように、上面６に対する相手部材の滑り易さと、下面７に対する相手部材の滑り易さが異なるが、当該相手部材の滑り易さも考慮して摩擦力を設定してよい。 The frictional force between the upper surface 6 of the mounting member 2 and the pallet 51 of the object 50 is larger than the frictional force between the lower surface 7 of the mounting member 2 and the beam member 103 </ b> A of the structure 100. That is, the lower surface 7 for the beam member 103 </ b> A is more slidable than the upper surface 6 for the pallet 51. The sliding load of the mounting member 2 on the beam member 103 </ b> A is smaller than the sliding load of the pallet 51 on the mounting member 2. Specifically, a structure in which a process for increasing the frictional force between the upper surface 6 and the object 50 is performed and a process for decreasing the frictional force between the lower surface 7 and the structure 100 is employed. You can do it. Alternatively, a structure in which a process for increasing the frictional force between the upper surface 6 and the object 50 is performed and a special process is not performed between the lower surface 7 and the structure 100 may be employed. Alternatively, a structure in which a special process is not performed between the upper surface 6 and the object 50 and a process for reducing the frictional force between the lower surface 7 and the structure 100 may be employed. In the present embodiment, the object 50 with respect to the upper surface 6 is a pallet 51, and the material of the pallet 51 is plastic or wood. The structure 100 with respect to the lower surface 7 is a beam material 103A, and the material of the beam material 103A is a steel material or the like. As described above, the slipperiness of the mating member relative to the upper surface 6 and the slipperiness of the mating member relative to the lower surface 7 are different, but the frictional force may be set in consideration of the slipperiness of the mating member.
上面６と対象物５０との間の摩擦力を高くする処理の一例について説明する。上面６と対象物５０との間の摩擦力を高くする処理として、対象物５０に対する上面６自体の摩擦係数を高めて、上面６を滑り難くする処理を行ってよい。すなわち、上面６の摩擦係数を載置部材２の基材表面（摩擦係数を変化させる処理を行っていない）の摩擦係数よりも高める。当該処理により、対象物５０に対する上面６の摩擦係数は、構造物１００に対する下面７の摩擦係数に比して高められる。相手部材を同一の部材として比較した場合であっても、上面６の摩擦係数は、下面７の摩擦係数に比して高くしてよい。これにより、上面６は、下面７に比して滑り難い面となる。このような構成とした場合、より簡易な構成にて、対象物５０の落下を防止することができる。 An example of a process for increasing the frictional force between the upper surface 6 and the object 50 will be described. As a process of increasing the frictional force between the upper surface 6 and the object 50, a process of making the upper surface 6 difficult to slide by increasing the friction coefficient of the upper surface 6 itself with respect to the object 50 may be performed. That is, the friction coefficient of the upper surface 6 is set higher than the friction coefficient of the base material surface of the mounting member 2 (the process for changing the friction coefficient is not performed). By this processing, the friction coefficient of the upper surface 6 with respect to the object 50 is increased as compared with the friction coefficient of the lower surface 7 with respect to the structure 100. Even when the counterpart members are compared as the same member, the friction coefficient of the upper surface 6 may be higher than the friction coefficient of the lower surface 7. Thereby, the upper surface 6 becomes a surface which is harder to slide than the lower surface 7. In such a configuration, the object 50 can be prevented from falling with a simpler configuration.
具体的には、加工を施すことによって摩擦係数が高く、滑り難くい上面６を形成してよい。載置部材２の上面６の表面粗さが基材表面よりも高くなるように、上面６を粗くするような表面加工を施してよい。または、別部材を用いて摩擦係数が高く、滑り難い上面６を形成してよい。すなわち、載置部材２の上側に、載置部材２の基材表面に比して摩擦係数が高く滑り難い部材を設けることにより、摩擦係数が高く、滑り難い上面６を形成する。例えば、載置部材２の基材表面に別部材のシートを接着や粘着によって固定してよい。または、載置部材２の基材表面に摩擦係数が高くなる材料によるコーティング処理を施してよい。または、載置部材２の基材表面に別部材のシートを固定することなく、単に敷くだけであってもよい。摩擦係数の高い部材として、ゴムやシリコンなどを採用してよい。なお、別部材を用いた場合は、当該別部材の上側の表面が「載置部材の上面」に該当する。 Specifically, the upper surface 6 which has a high friction coefficient and is difficult to slip may be formed by processing. Surface processing may be performed to roughen the upper surface 6 so that the surface roughness of the upper surface 6 of the mounting member 2 is higher than the surface of the base material. Or you may form the upper surface 6 which has a high friction coefficient, and is hard to slide using another member. That is, by providing a member having a higher friction coefficient and less slipping than the base member surface of the mounting member 2 on the upper side of the mounting member 2, the upper surface 6 having a higher friction coefficient and less slipping is formed. For example, a sheet of another member may be fixed to the surface of the substrate of the mounting member 2 by adhesion or adhesion. Or you may perform the coating process by the material with which a friction coefficient becomes high to the base-material surface of the mounting member 2. FIG. Or you may just lay, without fixing the sheet | seat of another member on the base-material surface of the mounting member 2. FIG. Rubber, silicon, or the like may be employed as a member having a high friction coefficient. When another member is used, the upper surface of the other member corresponds to the “upper surface of the mounting member”.
載置部材２の上面６に処理を行う場合、当該処理は上面６の全域に施されていてもよく、一部に施されていてもよい。なお、図４は、色付きの領域が処理の施されている部分であり、当該部分を高摩擦領域６Ａと称する。図４（ａ）に示すように、上面６の全域に高摩擦領域６Ａが形成されていてよい。図４（ｂ）に示すように、上面６の一部に高摩擦領域６Ａが形成され、上面６の縁部で載置部材２の基材表面が露出していてよい。また、図４（ｃ）に示すように、上面６の複数カ所に部分的に高摩擦領域６Ａが形成されていていよい。図４（ｄ）に示すように、対象物５０の前側の縁部で摩擦力を発生させるように、上面６のうち、前端部２ａ側の一部の領域にのみ高摩擦領域６Ａを形成してよい。なお、図４は、高摩擦領域６Ａの形状や配置パタンの一例を示しているに過ぎず、設置時にパレット５１の下側にあたる箇所及び稼働範囲部分を含めた領域（対象物５０を支持する領域）に処理が施されていればよく、これらに限定されるものではない。 When processing the upper surface 6 of the mounting member 2, the processing may be performed on the entire upper surface 6 or may be performed on a part thereof. In FIG. 4, a colored area is a processed part, and this part is referred to as a high friction area 6 </ b> A. As shown in FIG. 4A, a high friction region 6 </ b> A may be formed over the entire upper surface 6. As shown in FIG. 4B, a high friction region 6 </ b> A may be formed on a part of the upper surface 6, and the substrate surface of the mounting member 2 may be exposed at the edge of the upper surface 6. Moreover, as shown in FIG.4 (c), the high friction area | region 6A may be partially formed in several places of the upper surface 6. FIG. As shown in FIG. 4D, the high friction region 6A is formed only in a part of the upper surface 6 on the front end portion 2a side so as to generate a frictional force at the front edge of the object 50. It's okay. FIG. 4 merely shows an example of the shape and arrangement pattern of the high friction region 6A. The region including the portion that is below the pallet 51 and the operation range portion at the time of installation (the region that supports the object 50). However, the present invention is not limited to these.
上面６と対象物５０との間の摩擦力を高くする処理として、上面６に対する対象物５０自体の摩擦係数を高め、滑り難くする処理を行ってよい。すなわち、対象物５０のパレット５１の下面５１ａに表面加工や別部材を設けることで、滑り難い下面５１ａを形成してよい。ただし、載置部材２側を滑り難くする処理を行えば、パレット５１が交換されたり種類の異なる対象物５０が収納される場合であっても対応可能である。なお、対象物５０に対する上面６自体の摩擦係数を高める処理を行うと共に、上面６に対する対象物５０自体の摩擦係数を高める処理を行ってもよい。 As a process of increasing the frictional force between the upper surface 6 and the object 50, a process of increasing the friction coefficient of the object 50 itself with respect to the upper surface 6 and making it difficult to slide may be performed. That is, the lower surface 51a which is hard to slip may be formed by providing surface processing or another member on the lower surface 51a of the pallet 51 of the object 50. However, if the process of making the mounting member 2 side difficult to slide is performed, it is possible to cope with the case where the pallet 51 is replaced or the object 50 of a different type is stored. In addition, while performing the process which raises the friction coefficient of the upper surface 6 itself with respect to the target object 50, the process which raises the friction coefficient of the target object 50 itself with respect to the upper surface 6 may be performed.
下面７と構造物１００との間の摩擦力を低くする処理の一例について説明する。下面７と構造物１００との間の摩擦力を低くする処理として、構造物１００に対する下面７自体の摩擦係数を低めて、下面７を滑り易くする処理を行ってよい。すなわち、下面７の摩擦係数を載置部材２の基材表面（摩擦係数を変化させる処理を行っていない）の摩擦係数よりも低める。当該処理により、構造物１００に対する下面７の摩擦係数は、対象物５０に対する上面６の摩擦係数に比して低められる。相手部材を同一の部材として比較した場合であっても、下面７の摩擦係数は、上面６の摩擦係数に比して低くしてよい。これにより、下面７は、上面６に比して滑り易い面となる。このような構成とした場合、より簡易な構成にて、対象物５０の落下を防止することができる。 An example of a process for reducing the frictional force between the lower surface 7 and the structure 100 will be described. As a process for reducing the frictional force between the lower surface 7 and the structure 100, a process for making the lower surface 7 easy to slide may be performed by reducing the coefficient of friction of the lower surface 7 with respect to the structure 100. That is, the friction coefficient of the lower surface 7 is made lower than the friction coefficient of the base material surface of the mounting member 2 (the process for changing the friction coefficient is not performed). By this processing, the friction coefficient of the lower surface 7 with respect to the structure 100 is lowered as compared with the friction coefficient of the upper surface 6 with respect to the object 50. Even when the counterpart member is compared as the same member, the friction coefficient of the lower surface 7 may be lower than the friction coefficient of the upper surface 6. Accordingly, the lower surface 7 becomes a surface that is more slippery than the upper surface 6. In such a configuration, the object 50 can be prevented from falling with a simpler configuration.
具体的には、加工を施すことによって摩擦係数が低く、滑り易い下面７を形成してもよい。載置部材２の下面７の表面粗さが基材表面よりも低くなるように、下面７を滑らかにするような表面加工を施してよい。または、別部材を用いて摩擦係数が低く、滑り易い下面７を形成してよい。すなわち、載置部材２の下側に、載置部材２の基材表面に比して摩擦係数が低く滑り易い部材を設けることにより、摩擦係数が低く、滑り易い下面７を形成する。例えば、載置部材２の基材表面に別部材のシートを接着や粘着によって固定してよい。または、載置部材２の基材表面に摩擦係数が低くなる材料によるコーティング処理を施してよい。摩擦係数の低い部材として、テフロン（登録商標）等のフッ素樹脂などを採用してよい。なお、別部材を用いた場合は、当該別部材の下側の表面が「載置部材の下面」に該当する。 Specifically, the lower surface 7 having a low friction coefficient and slippery may be formed by processing. Surface processing may be performed to smooth the lower surface 7 so that the surface roughness of the lower surface 7 of the mounting member 2 is lower than the surface of the base material. Alternatively, the lower surface 7 having a low coefficient of friction and slippery may be formed using another member. That is, the lower surface 7 having a low friction coefficient and being easy to slide is formed on the lower side of the placement member 2 by providing a member having a low friction coefficient and being easy to slide as compared with the substrate surface of the placement member 2. For example, a sheet of another member may be fixed to the surface of the substrate of the mounting member 2 by adhesion or adhesion. Or you may perform the coating process by the material in which a friction coefficient becomes low to the base-material surface of the mounting member 2. FIG. As a member having a low friction coefficient, a fluororesin such as Teflon (registered trademark) may be employed. When a separate member is used, the lower surface of the separate member corresponds to the “lower surface of the mounting member”.
載置部材２の下面７に処理を行う場合、当該処理は下面７の全域に施されていてもよく、一部に施されていてもよい。なお、図４は、色付きの領域が処理の施されている部分あり、当該部分を低摩擦領域７Ａと称する。図４（ａ）に示すように、下面７の全域に低摩擦領域７Ａが形成されていてよい。ただし、接続性を高めるため粘弾性体３との接続部周辺の領域には低摩擦領域７Ａが形成されていなくてよい。図４（ｄ）に示すように、構造物１００の梁材１０３Ａと接触する部分のみを滑り易くするため、下面７のうち、前端部２ａ側の一部の領域にのみ低摩擦領域７Ａを形成してよい。なお、図４は、低摩擦領域７Ａの形状や配置パタンの一例を示しているに過ぎず、設置時に梁材１０３Ａの上側にあたる箇所及び稼働範囲部分を含めた領域（構造物１００に支持される領域）に処理が施されていればよく、これらに限定されるものではない。 When processing the lower surface 7 of the mounting member 2, the processing may be performed on the entire lower surface 7 or may be performed on a part thereof. In FIG. 4, a colored region is a portion that has been processed, and this portion is referred to as a low friction region 7 </ b> A. As shown in FIG. 4A, a low friction region 7 </ b> A may be formed in the entire lower surface 7. However, the low friction region 7 </ b> A does not have to be formed in the region around the connection portion with the viscoelastic body 3 in order to improve the connectivity. As shown in FIG. 4D, the low friction region 7A is formed only in a part of the lower surface 7 on the front end portion 2a side so that only the portion of the structure 100 that contacts the beam member 103A can be easily slipped. You can do it. Note that FIG. 4 merely shows an example of the shape and arrangement pattern of the low friction region 7A, and the region (the structure 100 is supported by the structure 100 including the portion on the upper side of the beam member 103A and the operating range portion at the time of installation. However, the present invention is not limited to this as long as the processing is applied to (region).
下面７と構造物１００との間の摩擦力を高くする処理として、下面７に対する構造物１００自体の摩擦係数を低め、滑り易くする処理を行ってよい。すなわち、構造物１００の梁材１０３Ａの上面１０３ａに表面加工や別部材を設けることで、滑り易い上面１０３ａを形成してよい。ただし、載置部材２側を滑り易くする処理を行えば、梁材１０３Ａの上面を滑らかにした部分以外でも落下防止構造１を設けることができる。なお、構造物１００に対する下面７自体の摩擦係数を低める処理を行うと共に、下面７に対する構造物１００自体の摩擦係数を低める処理を行ってもよい。 As a process for increasing the frictional force between the lower surface 7 and the structure 100, a process for reducing the coefficient of friction of the structure 100 itself with respect to the lower surface 7 and making it easy to slide may be performed. That is, the slippery upper surface 103a may be formed by providing surface processing or another member on the upper surface 103a of the beam member 103A of the structure 100. However, if the process which makes the mounting member 2 side easy to slip is performed, the fall prevention structure 1 can be provided also in the part other than the part which made the upper surface of the beam material 103A smooth. In addition, while performing the process which lowers the friction coefficient of the lower surface 7 itself with respect to the structure 100, the process which lowers the friction coefficient of the structure 100 itself with respect to the lower surface 7 may be performed.
支持部材４は、粘弾性体３を支持するための部材である。支持部材４は、一端側で構造物１００に連結されると共に、他端側で粘弾性体３に連結される。本実施形態では、支持部材４は、空間部ＳＰ内であって、載置部材２の下方に設けられている。支持部材４は、断面Ｌ字状の形状をなしており、載置部材２の下面７と対向するように奥行き方向Ｄ２に延びて粘弾性体３を支持する支持部と、梁材１０３Ａの背面１０３ｃと対向すると共に当該背面１０３ｃに固定される固定部１２と、を備えている。特に形状は限定されないが、支持部１１は、奥行き方向Ｄ２へ水平に延びる矩形状をなしており、固定部１２は、支持部１１の前端部１１ａと連結されて下方へ垂直に延びる矩形状をなしている。支持部１１の後端部１１ｂは、奥行き方向Ｄ２において、載置部材２の後端部２ｂと略同位置まで延びている。支持部１１は、上下方向から見て、載置部材２の空間部ＳＰの部分と重なるような形状・配置に設けられている。 The support member 4 is a member for supporting the viscoelastic body 3. The support member 4 is connected to the structure 100 on one end side and is connected to the viscoelastic body 3 on the other end side. In the present embodiment, the support member 4 is provided in the space SP and below the placement member 2. The support member 4 has an L-shaped cross section, extends in the depth direction D2 so as to face the lower surface 7 of the mounting member 2, and supports the viscoelastic body 3, and the back surface of the beam member 103A. And a fixing portion 12 that is opposed to 103c and is fixed to the back surface 103c. Although the shape is not particularly limited, the support portion 11 has a rectangular shape that extends horizontally in the depth direction D2, and the fixed portion 12 has a rectangular shape that is connected to the front end portion 11a of the support portion 11 and extends vertically downward. There is no. The rear end portion 11b of the support portion 11 extends to substantially the same position as the rear end portion 2b of the mounting member 2 in the depth direction D2. The support portion 11 is provided in a shape / arrangement so as to overlap the space portion SP portion of the placement member 2 when viewed from the vertical direction.
粘弾性体３は、載置部材２と支持部材４との間に設けられており、上面１３が載置部材２の下面７に固定され、下面１４が支持部材４の上面に固定されている。当該固定は接着や粘着によってなされている。載置部材２や支持部材４の接着面には、例えばショットブラスト処理、皮膜処理、または溶融亜鉛めっき処理といった接着力の強化等の所望の効果を発揮させるための表面処理を施してよい。粘弾性体３の材料として、アクリル樹脂やゴムなどの粘弾性材料を適用してよい。粘弾性体３の形状は特に限定されず、円板状であってもよく、矩形板状であってもよい。載置部材２と支持部材４との間の距離によって、粘弾性体３の中間位置に中間プレート１０が設けられていてよい。これにより、一層あたりの粘弾性体３の厚さを適切な寸法とすることができる。図３に示す例では、粘弾性体３は三層に構成されているが、一層や二層であってもよく、四層以上であってもよい。 The viscoelastic body 3 is provided between the mounting member 2 and the support member 4, the upper surface 13 is fixed to the lower surface 7 of the mounting member 2, and the lower surface 14 is fixed to the upper surface of the support member 4. . The fixing is performed by adhesion or adhesion. The adhesion surface of the mounting member 2 and the support member 4 may be subjected to a surface treatment for exerting a desired effect such as enhancement of adhesive force such as shot blasting, film treatment, or hot dip galvanizing. As a material of the viscoelastic body 3, a viscoelastic material such as acrylic resin or rubber may be applied. The shape of the viscoelastic body 3 is not particularly limited, and may be a disk shape or a rectangular plate shape. Depending on the distance between the mounting member 2 and the support member 4, an intermediate plate 10 may be provided at an intermediate position of the viscoelastic body 3. Thereby, the thickness of the viscoelastic body 3 per layer can be made into an appropriate dimension. In the example shown in FIG. 3, the viscoelastic body 3 is configured in three layers, but may be one layer, two layers, or four layers or more.
粘弾性体３を設ける位置は特に限定されないが、粘弾性体３は、振動によって変形した際に、構造物１００と干渉しないように当該構造物１００から離間してよい。本実施形態では、梁材１０３Ａと粘弾性体３（または中間プレート１０）との距離Ｌが、粘弾性体３の変形時（図５（ａ）に示す状態）に、粘弾性体３または中間プレート１０と梁材１０３Ａとが接触しない程度に確保されている。 The position where the viscoelastic body 3 is provided is not particularly limited, but the viscoelastic body 3 may be separated from the structure 100 so as not to interfere with the structure 100 when deformed by vibration. In the present embodiment, the distance L between the beam member 103A and the viscoelastic body 3 (or the intermediate plate 10) is set so that the viscoelastic body 3 or the intermediate medium 3 is deformed when the viscoelastic body 3 is deformed (the state shown in FIG. 5A). It is ensured to such an extent that the plate 10 and the beam member 103A do not contact each other.
次に、図５及び図６を参照して、本実施形態に係る作用・効果について説明する。 Next, with reference to FIG.5 and FIG.6, the effect | action and effect which concern on this embodiment are demonstrated.
まず、本実施形態に係る落下防止構造１との比較のために、図６を参照して、比較例に係る落下防止構造２００，３００について説明する。図６（ｂ）に示す落下防止構造２００は、載置部材２０２が構造物１００の梁材１０３Ａに固定されている。また、載置部材２０２の縁部には、ストッパ用の突出部２１５が設けられている。このような落下防止構造２００では、地震などにより構造物１００が振動したときに、対象物５０が載置部材２０２の上面２０６を滑り振動する。対象物５０が前側に移動すると、載置部材２０２の突出部２１５でパレット５１の移動が止められる。しかしながら、ストッパ用の突出部２１５でパレット５１を止めても、パレット５１上の物品５２は慣性力によってそのまま前側へ移動する。その結果、物品５２がパレット５１から落下し、構造物１００から落下する場合がある。 First, for comparison with the fall prevention structure 1 according to the present embodiment, the fall prevention structures 200 and 300 according to the comparative example will be described with reference to FIG. In the fall prevention structure 200 shown in FIG. 6B, the mounting member 202 is fixed to the beam member 103 </ b> A of the structure 100. In addition, a protrusion 215 for a stopper is provided at the edge of the mounting member 202. In such a fall prevention structure 200, when the structure 100 vibrates due to an earthquake or the like, the object 50 slides and vibrates on the upper surface 206 of the mounting member 202. When the object 50 moves to the front side, the movement of the pallet 51 is stopped by the protrusion 215 of the mounting member 202. However, even if the pallet 51 is stopped by the stopper projection 215, the article 52 on the pallet 51 moves to the front side as it is due to the inertial force. As a result, the article 52 may fall from the pallet 51 and fall from the structure 100.
図６（ａ）に示す落下防止構造３００は、本実施形態に係る落下防止構造１と同様な基本構成を有しているが、落下防止構造３００では、載置部材３０２の上面３０６と対象物５０との間の摩擦力が、載置部材３０２の下面３０７と構造物１００との間の摩擦力よりも小さい。このような落下防止構造３００では、構造物１００が振動したときに、載置部材３０２が構造物１００の梁材１０３Ａに対して相対移動を行う前に、対象物５０のパレット５１が載置部材３０２の上面３０６を滑ってしまう。このような場合、対象物５０は構造物１００に対して相対移動を行う一方で、載置部材３０２は構造物１００に対して相対移動を行わない（または、相対移動が小さくなる）。従って、粘弾性体３は、載置部材３０２の振動を十分に吸収して減衰させることができず、その結果、対象物５０の振動も減衰させることができない。また、載置部材３０２に対して対象物５０が相対移動するため、対象物５０が落下しないように載置部材３０２の縁部にストッパ用の突出部３１５を設ける必要性が生じる。 The fall prevention structure 300 shown in FIG. 6A has the same basic configuration as the fall prevention structure 1 according to the present embodiment. However, in the fall prevention structure 300, the upper surface 306 of the mounting member 302 and the object. 50 is smaller than the frictional force between the lower surface 307 of the mounting member 302 and the structure 100. In such a fall prevention structure 300, when the structure 100 vibrates, the pallet 51 of the object 50 is placed on the placement member before the placement member 302 moves relative to the beam member 103A of the structure 100. The upper surface 306 of 302 is slipped. In such a case, the object 50 performs relative movement with respect to the structure 100, while the mounting member 302 does not perform relative movement with respect to the structure 100 (or the relative movement becomes small). Therefore, the viscoelastic body 3 cannot sufficiently absorb and attenuate the vibration of the mounting member 302, and as a result, cannot also attenuate the vibration of the object 50. Further, since the object 50 moves relative to the mounting member 302, it is necessary to provide a protruding portion 315 for a stopper at the edge of the mounting member 302 so that the object 50 does not fall.
これに対して、本実施形態に係る落下防止構造１では、載置部材２の上面６と対象物５０との間の摩擦力が、下面７と構造物１００との間の摩擦力よりも大きい。従って、図５（ａ）及び図５（ｂ）に示すように、構造物１００が振動した際は、対象物５０が上面６に対して相対移動を行う前に、載置部材２の下面７が構造物１００に対して常に相対移動を行う。すなわち、対象物５０は載置部材２と共に構造物１００に対して相対移動を行う。載置部材２は粘弾性体３に連結されているため、載置部材２が対象物５０と共に相対移動することによって、粘弾性体３は載置部材２及び対象物５０の振動を対象物５０が移動を始めた瞬間から確実に減衰させることができる。これにより、対象物５０が落下することを防止できる。また、このような落下防止構造１を載置部材２と粘弾性体３を連結した簡易な構成で実現できる。以上により、簡易な構成にて、落下防止の性能を向上させることができる。なお、図５では、対象物５０が奥行き方向Ｄ２のみ移動している様子が示されているが、横方向Ｄ１の移動成分を含んでいてもよく、粘弾性体３は、当該横方向Ｄ１の振動も減衰させることができる。特に、（パレット５１と載置部材２の大きさの関係上）奥行き方向Ｄ２に沿って平行に延びる縁部には載置部材２にストッパ（横方向Ｄ１における振動を支持するためのストッパ）を設けることができないが、本実施形態に係る落下防止構造１では、ストッパを設ける必要性を無くすことができるため、横方向Ｄ１への対象物５０の振動に対して非常に有効となる。なお、載置部材２を、粘弾性体３に変形が伝わるような剛性の部材とすることができる。 On the other hand, in the fall prevention structure 1 according to the present embodiment, the frictional force between the upper surface 6 of the mounting member 2 and the object 50 is larger than the frictional force between the lower surface 7 and the structure 100. . Therefore, as shown in FIGS. 5A and 5B, when the structure 100 vibrates, the lower surface 7 of the mounting member 2 is moved before the object 50 moves relative to the upper surface 6. Always moves relative to the structure 100. That is, the object 50 moves relative to the structure 100 together with the mounting member 2. Since the placement member 2 is connected to the viscoelastic body 3, the placement member 2 relatively moves with the object 50, so that the viscoelastic body 3 causes vibrations of the placement member 2 and the object 50. Can be reliably attenuated from the moment when the movement starts. Thereby, it can prevent that the target object 50 falls. Further, such a fall prevention structure 1 can be realized with a simple configuration in which the mounting member 2 and the viscoelastic body 3 are connected. As described above, the fall prevention performance can be improved with a simple configuration. Note that FIG. 5 shows that the object 50 is moving only in the depth direction D2, but it may include a moving component in the horizontal direction D1, and the viscoelastic body 3 is in the horizontal direction D1. Vibration can also be damped. In particular (on the relationship between the size of the pallet 51 and the mounting member 2), a stopper (a stopper for supporting vibration in the lateral direction D1) is provided on the mounting member 2 at the edge extending in parallel along the depth direction D2. Although it cannot be provided, in the fall prevention structure 1 according to the present embodiment, the necessity of providing a stopper can be eliminated, which is very effective against vibration of the object 50 in the lateral direction D1. The mounting member 2 can be a rigid member that can be deformed to the viscoelastic body 3.
また、対象物５０が載置部材２とともに、粘弾性体３で減衰されながら振動し、対象物５０が載置部材２に対して相対的に移動することを防止または抑制できる。従って、載置部材２の縁部にストッパ用の突出部１５（図３参照）を設ける必要性が無くなる。また、ストッパ用の突出部１５でパレット５１を止めることによって、物品５２が慣性力によってパレット５１上を移動することも防止できる。従って、物品５２がパレット５１から落下することをより確実に防止できる。 In addition, it is possible to prevent or suppress the object 50 from vibrating with the mounting member 2 while being attenuated by the viscoelastic body 3 and moving the object 50 relative to the mounting member 2. Therefore, it is not necessary to provide the protrusion 15 for the stopper (see FIG. 3) at the edge of the mounting member 2. In addition, by stopping the pallet 51 with the stopper projection 15, it is possible to prevent the article 52 from moving on the pallet 51 due to inertial force. Therefore, it is possible to more reliably prevent the article 52 from falling from the pallet 51.
また、本実施形態に係る落下防止構造１は、載置部材２の下方に設けられた支持部材４を更に備え、粘弾性体３は、載置部材２の下面７と連結されると共に、支持部材４と連結されている。載置部材２の下面７は、梁材１０３Ａより後側の領域では空間部ＳＰ中に配置された状態であるが、支持部材４で粘弾性体３を支持することで、載置部材２の下面７に粘弾性体３を直接連結することができる。これによって、粘弾性体３は、載置部材２及び対象物５０の振動を効率よく減衰させることができる。 The fall prevention structure 1 according to the present embodiment further includes a support member 4 provided below the mounting member 2, and the viscoelastic body 3 is connected to the lower surface 7 of the mounting member 2 and supported. It is connected to the member 4. The lower surface 7 of the mounting member 2 is in a state of being disposed in the space SP in the region on the rear side of the beam member 103 </ b> A, but by supporting the viscoelastic body 3 with the support member 4, The viscoelastic body 3 can be directly connected to the lower surface 7. Thereby, the viscoelastic body 3 can efficiently attenuate the vibrations of the mounting member 2 and the object 50.
また、本実施形態に係る落下防止構造１では、載置部材２の縁部には、上方へ突出するストッパ用の突出部１５が設けられていない。これによって載置部材２の構成をシンプルにすることができるため、落下防止構造１適用のためのコストを低減できる。また、パレット５１のフォークリフト用の穴５３（図２参照）の入口に突出部１５が存在する場合、フォークリフトの爪を穴５３に挿入する際に、爪と突出部１５が接触しないように留意して作業を行う必要がある。これに対し、載置部材２に突出部１５が設けられない場合は、容易にフォークリフトの爪をパレット５１の穴５３に挿入でき、特に、パレット５１を下す際の作業性が向上する。 Further, in the fall prevention structure 1 according to the present embodiment, the edge portion of the mounting member 2 is not provided with the protruding portion 15 for the stopper that protrudes upward. Thereby, since the structure of the mounting member 2 can be simplified, the cost for applying the fall prevention structure 1 can be reduced. Also, when the protrusion 15 is present at the entrance of the forklift hole 53 (see FIG. 2) of the pallet 51, care should be taken that the claw and the protrusion 15 do not come into contact with each other when the forklift claw is inserted into the hole 53. Need to work. On the other hand, when the protrusion 15 is not provided on the mounting member 2, the forklift pawl can be easily inserted into the hole 53 of the pallet 51, and the workability when the pallet 51 is lowered is improved.
また、本実施形態に係る落下防止構造１では、粘弾性体３は、載置部材２の振動に伴い変形した場合に構造物１００と接触しないように、当該構造物１００から離間している。これによって、粘弾性体３が振動に合わせて十分に変形することが可能となり、振動を十分に減衰させることができる。 Further, in the fall prevention structure 1 according to the present embodiment, the viscoelastic body 3 is separated from the structure 100 so as not to come into contact with the structure 100 when deformed with the vibration of the mounting member 2. Thereby, the viscoelastic body 3 can be sufficiently deformed in accordance with the vibration, and the vibration can be sufficiently damped.
本発明は、上述の実施形態に限定されるものではない。 The present invention is not limited to the embodiment described above.
上述の実施形態では、載置部材２の下方で対向する支持部材４を用いていたが、支持部材４はこのような構成に限られず、構造物１００に固定されると共に粘弾性体３を支持できればどのような構成であってもよい。また、支持部材４を用いて粘弾性体３を支持していたが、支持部材４を用いず、構造物１００で直接粘弾性体３を支持してもよい。また、粘弾性体３は載置部材２の下面７に直接連結されていたが、載置部材２の何れかの位置で連結されていればよい。例えば、図７に示すように、梁材１０３Ａに対して奥行き方向Ｄ１に延びる梁材１０２Ａが設けられており、当該梁材１０２Ａに粘弾性体３が固定されていてよい。また、載置部材６２の横方向Ｄ１における縁部から下方に連結片６４が延びており、当該連結片６４に粘弾性体３が連結されていてよい。なお、梁材１０２Ａに代えて、梁材１０３Ａに固定されて、連結片６４と対向する面を有する支持部材を設け、当該支持部材に粘弾性体を連結させてもよい。 In the above-described embodiment, the support member 4 facing below the mounting member 2 is used. However, the support member 4 is not limited to such a configuration, and is fixed to the structure 100 and supports the viscoelastic body 3. Any configuration is possible if possible. Further, although the viscoelastic body 3 is supported using the support member 4, the viscoelastic body 3 may be directly supported by the structure 100 without using the support member 4. Further, although the viscoelastic body 3 is directly connected to the lower surface 7 of the mounting member 2, it may be connected at any position of the mounting member 2. For example, as shown in FIG. 7, a beam member 102A extending in the depth direction D1 with respect to the beam member 103A is provided, and the viscoelastic body 3 may be fixed to the beam member 102A. In addition, the connecting piece 64 may extend downward from the edge of the mounting member 62 in the lateral direction D <b> 1, and the viscoelastic body 3 may be connected to the connecting piece 64. Instead of the beam member 102A, a support member fixed to the beam member 103A and having a surface facing the connecting piece 64 may be provided, and the viscoelastic body may be connected to the support member.
また、載置部材の形状は特に限定されず、あらゆる形状を採用してよい。例えば、図８（ａ）に示すような載置部材７２を採用してよい。載置部材７２は、構造物１００と接触する一対の片部７２Ａ，７２Ｂを有し、片部７２Ａ，７２Ｂ同士が連結部７２Ｃで連結されている。また、連結部７２Ｃで粘弾性体３が連結されている。また、図８（ｂ）に示すように、載置部材２に対して上下方向から見て複数位置に粘弾性体３を設けてもよい。 Moreover, the shape of a mounting member is not specifically limited, All shapes may be employ | adopted. For example, you may employ | adopt the mounting member 72 as shown to Fig.8 (a). The mounting member 72 has a pair of pieces 72A and 72B that come into contact with the structure 100, and the pieces 72A and 72B are connected to each other by a connecting portion 72C. Further, the viscoelastic body 3 is connected by the connecting portion 72C. Moreover, as shown in FIG.8 (b), you may provide the viscoelastic body 3 in multiple positions seeing from the up-down direction with respect to the mounting member 2. FIG.
なお、上述の実施形態では前面側の梁材１０３Ａに落下防止構造１を設けていたが、背面側の梁材１０３Ｂの構成は特に限定されない。例えば、図８（ｃ）の紙面左側に示すように、梁材１０３Ｂ側には何も設けなくてもよい。または、図８（ｃ）の中央に示すように、梁材１０３Ｂに載置部材２のみ（粘弾性体３は連結されていない）を固定してもよい。または、図８（ｃ）の紙面右側に示すように、梁材１０３Ｂにも落下防止構造を設けてよい。なお、図８（ｃ）の紙面左側や中央に示す構成とする場合、対象物５０と梁材１０３Ｂの上面や載置部材との間の摩擦力は、落下防止構造１の載置部材２と対象物５０との間の摩擦力よりも低い。なお、落下防止構造１を前面側の梁材１０３Ａに設けず、背面側の梁材１０３Ｂのみに設けてもよい。 In the above-described embodiment, the fall prevention structure 1 is provided on the front beam member 103A, but the configuration of the rear beam member 103B is not particularly limited. For example, as shown on the left side of FIG. 8C, nothing is required on the beam member 103B side. Alternatively, as shown in the center of FIG. 8C, only the mounting member 2 (the viscoelastic body 3 is not connected) may be fixed to the beam member 103B. Alternatively, as shown on the right side of FIG. 8C, the beam member 103B may be provided with a fall prevention structure. In addition, when it is set as the structure shown on the paper surface left side and center of FIG.8 (c), the frictional force between the target object 50 and the upper surface and mounting member of the beam material 103B is with the mounting member 2 of the fall prevention structure 1. FIG. It is lower than the frictional force between the object 50. The fall prevention structure 1 may be provided only on the beam member 103B on the back side without providing the beam member 103A on the front side.
また、上述の実施形態では、各載置部材が梁材１０３Ａに支持されていたが、構造物１００であればどこで支持されていてもよい。例えば、図９及び図１０（ａ）に示すように、載置部材８２が、奥行き方向Ｄ２に延びる梁材１０２Ａに支持されていてもよい。図１０（ａ）に示すように、載置部材８２の下面８７は梁材１０２Ａの上面１０２ａに支持され、載置部材８２は梁材１０２Ａの側面よりも外側へ延びている。載置部材８２の上面８６にはパレット５１が載置されている。梁材１０２Ａの側面には断面Ｌ字状のブラケット８４が設けられており、ブラケット８４は、梁材１０２Ａの側面から水平方向に延びる部分を有している。当該部分と載置部材８２の下面８７との間には粘弾性体３が設けられている。載置部材８２の上面８６とパレット５１との間の摩擦力は、下面８７と梁材１０２Ａの上面１０２ａとの間の摩擦力よりも大きい。 Further, in the above-described embodiment, each mounting member is supported by the beam member 103 </ b> A, but may be supported anywhere as long as it is the structure 100. For example, as shown in FIGS. 9 and 10A, the mounting member 82 may be supported by a beam member 102A extending in the depth direction D2. As shown in FIG. 10A, the lower surface 87 of the mounting member 82 is supported by the upper surface 102a of the beam member 102A, and the mounting member 82 extends outward from the side surface of the beam member 102A. The pallet 51 is placed on the upper surface 86 of the placement member 82. A bracket 84 having an L-shaped cross section is provided on the side surface of the beam member 102A, and the bracket 84 has a portion extending in the horizontal direction from the side surface of the beam member 102A. The viscoelastic body 3 is provided between the portion and the lower surface 87 of the mounting member 82. The frictional force between the upper surface 86 of the mounting member 82 and the pallet 51 is larger than the frictional force between the lower surface 87 and the upper surface 102a of the beam member 102A.
なお、請求項における「載置部材の上面」とは、載置部材の面の内、最も上側に位置する面を意味するものではなく、載置部材の面の内、上側を向いており、且つ、対象物５０を支持する面を意味する。また、請求項における「載置部材の下面」とは、載置部材の面の内、最も下側に位置する面を意味するものではなく、載置部材の面の内、下側を向いており、且つ、構造物１００に支持される面を意味する。従って、図１０（ｂ）に示すような構造も採用できる。図１０（ｂ）に示す載置部材９２は、梁材１０２Ａを取り囲むような四角筒状に形成されている。載置部材９２のうち、上壁部９２Ａの上面９６が対象物５０のパレット５１を支持し、上壁部９２Ａの下面９７が梁材１０２Ａの上面１０２ａに支持される。載置部材９２の下壁部９２Ｂと梁材１０２Ａの下面との間には粘弾性体３が設けられる。載置部材９２の上面９６とパレット５１との間の摩擦力は、下面９７と梁材１０２Ａの上面１０２ａとの間の摩擦力よりも大きい。このような形態では、上壁部９２Ａの下面９７ではなく下壁部９２Ｂの下面９２Ｂａが最も下側に位置する面であるが、下面９７が請求項における「載置部材の下面」に該当する。 In addition, the “upper surface of the mounting member” in the claims does not mean the uppermost surface of the surface of the mounting member, but faces the upper side of the surface of the mounting member, And the surface which supports the target object 50 is meant. Further, in the claims, the “lower surface of the mounting member” does not mean the lowermost surface of the mounting member, but faces the lower side of the surface of the mounting member. And means a surface supported by the structure 100. Therefore, a structure as shown in FIG. The mounting member 92 shown in FIG. 10B is formed in a square cylinder shape surrounding the beam member 102A. Of the mounting member 92, the upper surface 96 of the upper wall portion 92A supports the pallet 51 of the object 50, and the lower surface 97 of the upper wall portion 92A is supported by the upper surface 102a of the beam member 102A. The viscoelastic body 3 is provided between the lower wall portion 92B of the mounting member 92 and the lower surface of the beam member 102A. The frictional force between the upper surface 96 of the mounting member 92 and the pallet 51 is larger than the frictional force between the lower surface 97 and the upper surface 102a of the beam member 102A. In such a form, the lower surface 92Ba of the lower wall portion 92B is not the lower surface 97 of the upper wall portion 92A, but the lower surface 97 corresponds to the “lower surface of the mounting member” in the claims. .
また、構造物の構造は上述のものに限定されない。例えば、上述の実施形態では二本の梁材１０３Ａ，１０３Ｂが設けられていたが、梁材は何本設けられてもよい。また、梁材上に板材が敷かれ、その上側に対象物５０を載せる構成でもよく（ただし、板材と落下防止構造の載置部材や粘弾性体が干渉しないようにする）、要は構造物と対象物の間に粘弾性体と連結された載置部材が有ればよい。 Further, the structure of the structure is not limited to the one described above. For example, although the two beam members 103A and 103B are provided in the above-described embodiment, any number of beam members may be provided. Further, a plate material may be laid on the beam material, and the object 50 may be placed on the upper side of the beam material (however, the plate material and the mounting member or the viscoelastic body of the fall prevention structure do not interfere with each other). It is sufficient if there is a mounting member connected to the viscoelastic body between the object and the object.
上述の実施形態では、対象物は、パレット５１に物品５２を載せたものであるが、これに限定されない。例えば物品５２を直接載置部材２上に載置してもよい。ただし、従来構造ではストッパを設けても慣性力でパレット５１上の物品５２が落下するのに対し、本実施形態に係る落下防止構造１では、物品５２の落下を防止できる。従って、パレット５１と物品５２のように、別体の二つ以上の物を対象物とすると、より本発明の効果が顕著となる。対象物として、箱体の中に収納された品物を保護したい場合にも、慣性力により箱内の品物の移動を抑制できるため、本発明の効果が顕著となる。 In the above-described embodiment, the object is an object in which the article 52 is placed on the pallet 51, but is not limited thereto. For example, the article 52 may be directly placed on the placement member 2. However, in the conventional structure, even if a stopper is provided, the article 52 on the pallet 51 falls by inertia force, whereas the fall prevention structure 1 according to the present embodiment can prevent the article 52 from falling. Therefore, when two or more separate objects such as the pallet 51 and the article 52 are used as objects, the effect of the present invention becomes more remarkable. Even when it is desired to protect an item stored in the box as an object, the effect of the present invention is remarkable because the movement of the item in the box can be suppressed by the inertial force.
上述の実施形態では、減衰部材として粘弾性体を使用した部材を例示したが、これに限らず、ゴム材を使用した部材やオイルダンパーなどを採用してもよい。なお、減衰部材とは、部材が変形することによって振動エネルギを吸収することができるものである。 In the above-described embodiment, a member using a viscoelastic body is exemplified as the damping member, but not limited to this, a member using a rubber material, an oil damper, or the like may be employed. The damping member is capable of absorbing vibration energy when the member is deformed.
１…落下防止構造、２，６２，７２，８２，９２…載置部材、３…粘弾性体（減衰部材）、４…支持部材、６，８６，９６…上面、７，８７，９７…下面、１５…突出部、５０…対象物、５１…パレット、５２…物品、１００…構造物、１０３Ａ，１０３Ｂ…梁材。 DESCRIPTION OF SYMBOLS 1 ... Fall prevention structure, 2, 62, 72, 82, 92 ... Mounting member, 3 ... Viscoelastic body (damping member), 4 ... Support member, 6, 86, 96 ... Upper surface, 7, 87, 97 ... Lower surface , 15 ... Projection, 50 ... Object, 51 ... Pallet, 52 ... Article, 100 ... Structure, 103A, 103B ... Beam material.
Claims (5)
上面及び下面を有し、前記下面側で前記構造物に支持され、前記上面側に前記対象物が載置される載置部材と、
前記載置部材における前記構造物に支持される領域以外の箇所で前記載置部材と連結され、前記載置部材の前記構造物に対する相対運動による振動を減衰させる減衰部材と、を備え、
前記載置部材の上面側と前記対象物との間の摩擦力は、前記載置部材の下面側と前記構造物との間の摩擦力よりも大きい、落下防止構造。 A fall prevention structure that prevents the object from falling from the structure,
A mounting member having an upper surface and a lower surface, supported by the structure on the lower surface side, and on which the object is mounted on the upper surface side;
A damping member that is coupled to the mounting member at a location other than the region supported by the structure in the mounting member, and that attenuates vibration due to relative movement of the mounting member with respect to the structure ;
The fall prevention structure in which the frictional force between the upper surface side of the mounting member and the object is larger than the frictional force between the lower surface side of the mounting member and the structure.
前記減衰部材は、前記載置部材の下面側と連結されると共に、前記支持部材と連結される、請求項１に記載の落下防止構造。 A support member provided below the mounting member and fixed to the structure ;
The fall prevention structure according to claim 1, wherein the attenuation member is connected to the lower surface side of the mounting member and to the support member.
前記載置部材は、前記部材に支持される第１の領域と、前記第１の領域から前記相対運動による振動の方向へ延在する第２の領域とを備え、 The mounting member includes a first region supported by the member, and a second region extending from the first region in a direction of vibration due to the relative motion,
前記減衰部材は、前記載置部材のうち、前記第１の領域から離間する位置において前記第２の領域に連結される、請求項１又は２に記載の落下防止構造。 3. The fall prevention structure according to claim 1, wherein the damping member is connected to the second region at a position apart from the first region in the mounting member.
The fall prevention according to any one of claims 1 to 4, wherein the damping member is separated from the structure so as not to come into contact with the structure when it is deformed with vibration of the mounting member. Construction.
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