JP5872634B2

JP5872634B2 - Fall prevention device

Info

Publication number: JP5872634B2
Application number: JP2014111705A
Authority: JP
Inventors: 良光高橋; 英朗藤田; 幸宣山田; 真治降籏
Original assignee: KYB Corp
Current assignee: KYB Corp
Priority date: 2013-05-29
Filing date: 2014-05-29
Publication date: 2016-03-01
Anticipated expiration: 2034-05-29
Also published as: JP2015006330A; JP6335941B2; JP2016047482A

Description

本発明は、物品の転倒を防止する転倒防止装置に関するものである。 The present invention relates to a tipping prevention device for preventing a tipping of an article.

従来の転倒防止装置として、特許文献１には、上部台板と、下部台板と、上部台板と下部台板の間に取り付けられた支柱と、を備えるものが開示されている。 As a conventional overturn prevention device, Patent Document 1 discloses an apparatus including an upper base plate, a lower base plate, and a column attached between the upper base plate and the lower base plate.

実用新案登録３０２８３３４号公報Utility Model Registration No. 3028334

特許文献１に記載の転倒防止装置では、支柱が剛体であるため、大きな地震が発生した際には、家具と天井の間で荷重を受けて破損するおそれがある。支柱が破損しない場合でも、家具や天井が破損するおそれがある。 In the fall prevention device described in Patent Document 1, since the support column is a rigid body, when a large earthquake occurs, there is a risk of receiving a load between the furniture and the ceiling and damaging it. Even if the support is not damaged, the furniture and ceiling may be damaged.

また、家具が大きく揺れた場合には、家具と天井の間隔が大きくなり、転倒防止装置が家具と天井の間から外れてしまうおそれがある。 In addition, when the furniture is greatly shaken, the distance between the furniture and the ceiling becomes large, and the fall prevention device may come off between the furniture and the ceiling.

本発明は、上記問題点に鑑みてなされたものであり、物品の転倒を効果的に防止することが可能な転倒防止装置を提供することを目的とする。 This invention is made | formed in view of the said problem, and it aims at providing the fall prevention apparatus which can prevent the fall of an article | item effectively.

本発明は、物品の転倒を防止する転倒防止装置であって、前記物品に接触可能な物品側ベース部と、天井に接触可能な天井側ベース部と、両端部のそれぞれが前記物品側ベース部と前記天井側ベース部に回動自在に連結され、前記物品の揺れに伴う伸縮動作によって減衰力を発生するダンパと、前記ダンパを伸長方向に付勢する付勢手段と、を備えることを特徴とする。 The present invention relates to an overturn prevention device for preventing an article from overturning, wherein an article side base portion that can contact the article, a ceiling side base portion that can contact a ceiling, and both end portions are the article side base portion. And a damper that is pivotally connected to the ceiling-side base portion and generates a damping force by an expansion / contraction operation accompanying the swing of the article, and an urging means that urges the damper in the extending direction. And

本発明によれば、ダンパは物品の揺れに伴う伸縮動作によって減衰力を発生するため、物品の揺れが抑制される。また、ダンパは物品側ベース部と天井側ベース部に回動自在に連結されるため、物品の揺れに追従する。よって、物品の転倒を効果的に防止することができる。 According to the present invention, since the damper generates a damping force by the expansion and contraction operation accompanying the swing of the article, the swing of the article is suppressed. Further, since the damper is rotatably connected to the article side base portion and the ceiling side base portion, the damper follows the swing of the article. Therefore, the article can be effectively prevented from falling.

本発明の第１実施形態に係る転倒防止装置を示す正面図である。It is a front view which shows the fall prevention apparatus which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る転倒防止装置の使用状態例を示す正面図である。It is a front view which shows the example of a use condition of the fall prevention apparatus which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る転倒防止装置におけるダンパの構成図である。It is a block diagram of the damper in the fall prevention apparatus which concerns on 1st Embodiment of this invention. （ａ）は本発明の第１実施形態に係る転倒防止装置の動作を示す図であり、（ｂ）は比較例としての転倒防止装置の動作を示す図である。(A) is a figure which shows operation | movement of the fall prevention apparatus which concerns on 1st Embodiment of this invention, (b) is a figure which shows operation | movement of the fall prevention apparatus as a comparative example. 本発明の実施形態に係る転倒防止装置の転倒試験結果を示す図である。It is a figure which shows the fall test result of the fall prevention apparatus which concerns on embodiment of this invention. 本発明の第２実施形態に係る転倒防止装置を示す正面図である。It is a front view which shows the fall prevention apparatus which concerns on 2nd Embodiment of this invention. 鉛直方向に対するダンパの傾斜角度を変化させて転倒防止装置を設置した場合の転倒試験結果を示す。The fall test result at the time of installing the fall prevention device by changing the inclination angle of the damper with respect to the vertical direction is shown. 物品側ベース部近傍の拡大図を示す。The enlarged view of the goods side base part vicinity is shown. ダンパが治具に当接した状態の図であって、（ａ）は正面図、（ｂ）は平面図、（ｃ）は側面図である。It is a figure of the state which the damper contact | abutted to the jig | tool, Comprising: (a) is a front view, (b) is a top view, (c) is a side view. 本発明の第２実施形態に係る転倒防止装置の変形例を示す正面図である。It is a front view which shows the modification of the fall prevention apparatus which concerns on 2nd Embodiment of this invention.

以下、図面を参照して、本発明の実施形態について説明する。 Embodiments of the present invention will be described below with reference to the drawings.

＜第１実施形態＞
図１〜３を参照して、本発明の第１実施形態に係る転倒防止装置１００について説明する。転倒防止装置１００は、地震等による家具や家電等の物品の転倒を防止する装置である。以下では、物品として家具１０を例にとって説明する。 <First Embodiment>
With reference to FIGS. 1-3, the fall prevention apparatus 100 which concerns on 1st Embodiment of this invention is demonstrated. The fall prevention device 100 is a device that prevents the fall of articles such as furniture and home appliances due to an earthquake or the like. Hereinafter, the furniture 10 will be described as an example of the article.

図１及び２に示すように、転倒防止装置１００は、家具１０に接触可能な物品側ベース部１と、天井１１に接触可能な天井側ベース部２と、物品側ベース部１と天井側ベース部２との間に介装されたダンパ３と、を備える。 As shown in FIGS. 1 and 2, the fall prevention device 100 includes an article-side base portion 1 that can contact furniture 10, a ceiling-side base portion 2 that can contact a ceiling 11, an article-side base portion 1, and a ceiling-side base. And a damper 3 interposed between the unit 2 and the unit 2.

物品側ベース部１は、底面が家具１０の頂面１０ａに面接触する基部１ａと、ダンパ３に連結される連結部１ｂと、を備える、同様に、天井側ベース部２も、底面が天井１１に面接触する基部２ａと、ダンパ３に連結される連結部２ｂと、を備える。物品側ベース部１は、物品に接触すると共にダンパ３に連結されるものであれば、どのような形状のものであってもよい。同様に、天井側ベース部２は、天井１１に接触すると共にダンパ３に連結されるものであれば、どのような形状のものであってもよい。 The article-side base portion 1 includes a base portion 1a whose bottom surface is in surface contact with the top surface 10a of the furniture 10, and a connecting portion 1b connected to the damper 3. Similarly, the bottom portion of the ceiling-side base portion 2 is also ceiling-shaped. 11, a base portion 2 a that makes surface contact with 11, and a connecting portion 2 b that is connected to the damper 3. The article-side base portion 1 may have any shape as long as it contacts the article and is connected to the damper 3. Similarly, the ceiling-side base portion 2 may have any shape as long as it contacts the ceiling 11 and is connected to the damper 3.

図３に示すように、ダンパ３は、作動油（作動流体）が封入されたシリンダ３１と、シリンダ３１に摺動自在に挿入されシリンダ３１内を２つの圧力室であるロッド側圧力室３２と反ロッド側圧力室３３に区画するピストン３４と、一端部がピストン３４に連結され他端部がシリンダ３１の外部へと延在するロッド３５と、を備える。 As shown in FIG. 3, the damper 3 includes a cylinder 31 filled with hydraulic oil (working fluid), and a rod-side pressure chamber 32 that is slidably inserted into the cylinder 31 and has two pressure chambers inside the cylinder 31. A piston 34 that is partitioned into the non-rod-side pressure chamber 33 and a rod 35 having one end connected to the piston 34 and the other end extending to the outside of the cylinder 31 are provided.

シリンダ３１の底部にはブラケット３６が設けられ、ブラケット３６と物品側ベース部１の連結部１ｂとはピン５１を介して回動自在に連結される。ロッド３５の先端部にはブラケット３７が設けられ、ブラケット３７と天井側ベース部２の連結部２ｂとはピン５２を介して回動自在に連結される。このように、シリンダ３１と物品側ベース部１はピン５１を介して回動自在に連結され、ロッド３５と天井側ベース部２はピン５２を介して回動自在に連結される。つまり、ダンパ３は、両端部のそれぞれがブラケット３６及びブラケット３７を介して物品側ベース部１と天井側ベース部２に回動自在に連結される。 A bracket 36 is provided at the bottom of the cylinder 31, and the bracket 36 and the connecting portion 1 b of the article-side base portion 1 are rotatably connected via a pin 51. A bracket 37 is provided at the tip of the rod 35, and the bracket 37 and the connecting portion 2 b of the ceiling side base portion 2 are rotatably connected via a pin 52. In this way, the cylinder 31 and the article side base portion 1 are rotatably connected via the pin 51, and the rod 35 and the ceiling side base portion 2 are rotatably connected via the pin 52. That is, both ends of the damper 3 are rotatably connected to the article side base portion 1 and the ceiling side base portion 2 via the bracket 36 and the bracket 37.

シリンダ３１の端部に形成された開口部は、ロッド３５を支持するロッドガイド３８にて封止される。ロッド３５は、ロッドガイド３８を摺動自在に挿通する。ロッド３５の外周面とシリンダ３１の内周面との間には、環状のシール部材３９がロッドガイド３８と並んで設けられる。 The opening formed at the end of the cylinder 31 is sealed with a rod guide 38 that supports the rod 35. The rod 35 is slidably inserted through the rod guide 38. An annular seal member 39 is provided side by side with the rod guide 38 between the outer peripheral surface of the rod 35 and the inner peripheral surface of the cylinder 31.

ピストン３４には、ダンパ３の伸縮動作に伴うロッド側圧力室３２と反ロッド側圧力室３３との間の作動油の流れに抵抗を付与して減衰力を発生する減衰力発生部としてのオリフィス４０が設けられる。 The piston 34 has an orifice as a damping force generator that generates a damping force by applying resistance to the flow of hydraulic oil between the rod-side pressure chamber 32 and the anti-rod-side pressure chamber 33 accompanying the expansion / contraction operation of the damper 3. 40 is provided.

また、ピストン３４には、ダンパ３の伸長動作に伴うロッド側圧力室３２と反ロッド側圧力室３３との間の作動油の流れのみを許容する逆止弁４１が設けられる。つまり、逆止弁４１は、ロッド側圧力室３２から反ロッド側圧力室３３への作動油の流れのみを許容する。したがって、ダンパ３の伸長動作時に発生する減衰力は、収縮動作時と比較して小さい。 Further, the piston 34 is provided with a check valve 41 that allows only the flow of hydraulic oil between the rod-side pressure chamber 32 and the anti-rod-side pressure chamber 33 accompanying the extension operation of the damper 3. That is, the check valve 41 allows only the flow of hydraulic oil from the rod side pressure chamber 32 to the non-rod side pressure chamber 33. Therefore, the damping force generated during the extension operation of the damper 3 is smaller than that during the contraction operation.

ダンパ３は、シリンダ３１内に圧縮ガスとしての窒素ガス４２が封入され、窒素ガス４２のガス圧によって伸長方向に作用するばね力を有する。つまり、本実施形態では、ダンパ３を伸長方向に付勢する付勢手段としてガスばねが用いられる。ダンパ３は、ロッド側圧力室３２に面するピストン３４の受圧面積と反ロッド側圧力室３３に面するピストン３４の受圧面積との差によって、伸長方向のばね力を発生する。ダンパ３が図３に示す向きとなるように転倒防止装置１００を設置した場合には、図３に示すように、窒素ガス４２は上方へと移動してロッド側圧力室３２に封入されることになる。一方、ダンパ３が図３に示す向きとは１８０度逆向きとなるように転倒防止装置１００を設置した場合には、窒素ガス４２は上方へと移動して反ロッド側圧力室３３に封入されることになる。 The damper 3 is nitrogen gas 42 as the compressed gas in the cylinder 31 is sealed, it has a spring force acting on the extended direction by the gas pressure of the nitrogen gas 42. That is, in this embodiment, a gas spring is used as a biasing unit that biases the damper 3 in the extending direction. The damper 3 generates a spring force in the extending direction due to the difference between the pressure receiving area of the piston 34 facing the rod side pressure chamber 32 and the pressure receiving area of the piston 34 facing the non-rod side pressure chamber 33. When the overturn prevention device 100 is installed so that the damper 3 is oriented as shown in FIG. 3, the nitrogen gas 42 moves upward and is enclosed in the rod side pressure chamber 32 as shown in FIG. 3. become. On the other hand, when the overturn prevention device 100 is installed so that the damper 3 is 180 degrees opposite to the direction shown in FIG. 3, the nitrogen gas 42 moves upward and is enclosed in the anti-rod side pressure chamber 33. Will be.

転倒防止装置１００を家具１０と天井１１の間に設置する際には、ダンパ３のばね力に抗してダンパを収縮させた状態で、家具１０と天井１１の間に転倒防止装置１００を挿入する。そして、家具１０と天井１１の間でガス圧によってダンパ３を伸長させ、物品側ベース部１の基部１ａを家具１０に面接触させると共に、天井側ベース部２の基部２ａを天井１１に面接触させる。ダンパ３は窒素ガス４２のガス圧によって伸長方向に作用するばね力を有するため、物品側ベース部１と天井側ベース部２はダンパ３のばね力によって互いに離れる方向に付勢されて家具１０と天井１１に押し付けられる。このようにして、転倒防止装置１００は、家具１０と天井１１の間にしっかりと固定される（図２参照）。 When the fall prevention device 100 is installed between the furniture 10 and the ceiling 11, the fall prevention device 100 is inserted between the furniture 10 and the ceiling 11 with the damper contracted against the spring force of the damper 3. To do. The damper 3 is extended by gas pressure between the furniture 10 and the ceiling 11 to bring the base 1a of the article-side base portion 1 into surface contact with the furniture 10, and the base 2a of the ceiling-side base portion 2 comes into surface contact with the ceiling 11. Let Since the damper 3 has a spring force acting in the extending direction by the gas pressure of the nitrogen gas 42, the article-side base portion 1 and the ceiling-side base portion 2 are urged away from each other by the spring force of the damper 3 and the furniture 10. Pressed against the ceiling 11. In this way, the fall prevention device 100 is firmly fixed between the furniture 10 and the ceiling 11 (see FIG. 2).

次に、図４を参照して、転倒防止装置１００の動作について説明する。 Next, the operation of the overturn prevention device 100 will be described with reference to FIG.

図４（ａ）は、家具１０の頂面１０ａと天井１１の間に転倒防止装置１００が設置され、地震等により家具１０が揺れている状態を示す図である。図４（ｂ）は、家具１０の頂面１０ａと天井１１の間に比較例としての転倒防止装置１０１が設置され、地震等により家具１０が揺れている状態を示す図である。 FIG. 4A is a diagram showing a state in which the fall prevention device 100 is installed between the top surface 10a of the furniture 10 and the ceiling 11, and the furniture 10 is shaken due to an earthquake or the like. FIG. 4B is a diagram illustrating a state in which the fall prevention device 101 as a comparative example is installed between the top surface 10a of the furniture 10 and the ceiling 11, and the furniture 10 is shaken due to an earthquake or the like.

図４（ａ）に示すように、ダンパ３は物品側ベース部１と天井側ベース部２との間に回動自在に連結されているため、家具１０が揺れると、物品側ベース部１とダンパ３は家具１０の動きに追従する。また、家具１０の揺れに伴って家具１０の頂面１０ａと天井１１との間隔が変化する。ダンパ３はその間隔の変化に応じて伸縮作動して減衰力を発生するため、ダンパ３の揺れが抑制される。 As shown in FIG. 4 (a), the damper 3 is rotatably connected between the article-side base portion 1 and the ceiling-side base portion 2, so that when the furniture 10 shakes, the article-side base portion 1 and The damper 3 follows the movement of the furniture 10. Further, as the furniture 10 shakes, the distance between the top surface 10a of the furniture 10 and the ceiling 11 changes. Since the damper 3 expands and contracts according to the change in the interval to generate a damping force, the vibration of the damper 3 is suppressed.

このように、家具１０が揺れた場合には、物品側ベース部１とダンパ３が家具１０の動きに追従すると共に、ダンパ３は家具１０の揺れに伴う伸縮動作によって減衰力を発生するため、転倒防止装置１００は、家具１０と天井１１の間から外れることなく、かつ家具１０と天井１１を損傷することもなく、家具１０の揺れを抑制して家具１０の転倒を効果的に防止する。 As described above, when the furniture 10 is shaken, the article-side base 1 and the damper 3 follow the movement of the furniture 10, and the damper 3 generates a damping force due to the expansion and contraction operation accompanying the shaking of the furniture 10. The fall prevention device 100 effectively prevents the furniture 10 from overturning by preventing the furniture 10 from shaking between the furniture 10 and the ceiling 11 and without damaging the furniture 10 and the ceiling 11.

また、ピストン３４にはロッド側圧力室３２から反ロッド側圧力室３３への作動油の流れのみを許容する逆止弁４１が設けられているため、ダンパ３の伸長動作時の減衰力はさほど大きくなく、ダンパ３は素早く伸長動作する。したがって、家具１０の頂面１０ａと天井１１との間隔が大きくなるダンパ３の伸長動作時であっても、天井側ベース部２が天井１１から離れてしまうことがない。よって、家具１０と天井１１の間からの転倒防止装置１００の外れが、より効果的に防止される。 Further, since the piston 34 is provided with a check valve 41 that allows only the flow of hydraulic oil from the rod-side pressure chamber 32 to the non-rod-side pressure chamber 33, the damping force during the extension operation of the damper 3 is moderate. It is not large, and the damper 3 extends quickly. Therefore, even when the damper 3 is extended to increase the distance between the top surface 10a of the furniture 10 and the ceiling 11, the ceiling-side base portion 2 is not separated from the ceiling 11. Therefore, the fall prevention device 100 from between the furniture 10 and the ceiling 11 is prevented more effectively.

図４（ｂ）に示すように、比較例としての転倒防止装置１０１は、ロッド６０が物品側ベース部１と天井側ベース部２との間に回動不能に連結されたものである。転倒防止装置１０１は、家具１０の動きに追従できないため、家具１０が揺れると家具１０と天井１１の間から外れるおそれがある。また、家具１０の頂面１０ａと天井１１との間隔が狭くなる際に、転倒防止装置１０１は家具１０と天井１１の間で大きな圧縮力を受けるため、転倒防止装置１０１が折れたり、家具１０と天井１１が損傷したりするおそれがある。このように、転倒防止装置１０１では、家具１０の転倒を効果的に防止することができない。 As shown in FIG. 4B, a fall prevention device 101 as a comparative example is configured such that a rod 60 is non-rotatably connected between the article-side base portion 1 and the ceiling-side base portion 2. Since the overturn prevention device 101 cannot follow the movement of the furniture 10, there is a risk that it will come off between the furniture 10 and the ceiling 11 when the furniture 10 is shaken. In addition, when the interval between the top surface 10a of the furniture 10 and the ceiling 11 is narrowed, the fall prevention device 101 receives a large compressive force between the furniture 10 and the ceiling 11, so that the fall prevention device 101 breaks or the furniture 10 The ceiling 11 may be damaged. Thus, in the fall prevention device 101, the fall of the furniture 10 cannot be effectively prevented.

図５に家具１０の転倒試験結果を示す。 FIG. 5 shows the result of the fall test of the furniture 10.

図５は、試験機にてｓｉｎ波を発生させて転倒試験を行なった結果である。図５（ａ）は転倒防止装置を用いない場合の結果であり、図５（ｂ）は転倒防止装置１０１を用いた場合の結果であり、図５（ｃ）は転倒防止装置１００を用いた場合の結果である。図５（ａ），（ｂ），（ｃ）において、左側の縦軸は家具１０の上部変位量、右側の縦軸は試験機の変位量（ｓｉｎ波の振幅）、横軸は時間である。 FIG. 5 shows the result of a tipping test performed by generating a sine wave with a testing machine. FIG. 5A shows the result when the fall prevention device is not used, FIG. 5B shows the result when the fall prevention device 101 is used, and FIG. 5C shows the result when the fall prevention device 100 is used. Is the result of the case. 5A, 5 </ b> B, and 5 </ b> C, the vertical axis on the left is the amount of upper displacement of the furniture 10, the vertical axis on the right is the amount of displacement of the testing machine (the amplitude of the sin wave), and the horizontal axis is time. .

転倒試験は、安全のため、家具１０の上部変位量が７００ｍｍ以上にはならないように家具１０を支持して試験を行った。上部変位量が７００ｍｍに達すると、家具１０は転倒している状況の変位量である。図５（ａ）に示すように、転倒防止装置を用いない場合には家具１０の上部変位量は約８秒で最大の７００ｍｍに達し、図５（ｂ）に示すように、転倒防止装置１０１を用いた場合には家具１０の上部変位量は約１５秒で最大の７００ｍｍに達した。これに対して、図５（ｃ）に示すように、転倒防止装置１００を用いた場合には、家具１０はほとんど変位しなかった。 In the fall test, for safety, the furniture 10 was supported so that the upper displacement amount of the furniture 10 was not 700 mm or more. When the upper displacement amount reaches 700 mm, the furniture 10 is the displacement amount in a situation where the furniture 10 is falling. As shown in FIG. 5A, when the fall prevention device is not used, the upper displacement amount of the furniture 10 reaches a maximum of 700 mm in about 8 seconds. As shown in FIG. When using, the upper displacement amount of the furniture 10 reached a maximum of 700 mm in about 15 seconds. On the other hand, as shown in FIG.5 (c), when the fall prevention apparatus 100 was used, the furniture 10 hardly displaced.

図５に示す転倒試験結果からわかるように、転倒防止装置１００は、家具１０の揺れを抑制して家具１０の転倒を効果的に防止可能であることが確認された。 As can be seen from the fall test results shown in FIG. 5, it was confirmed that the fall prevention device 100 can effectively prevent the furniture 10 from falling by suppressing the swing of the furniture 10.

以上の第１実施形態によれば、以下に示す効果を奏する。 According to the above 1st Embodiment, there exists an effect shown below.

ダンパ３は家具１０の揺れに伴う伸縮動作によって減衰力を発生するため、家具１０の揺れが抑制される。また、ダンパ３は物品側ベース部１と天井側ベース部２に回動自在に連結されるため、家具１０の揺れに追従する。よって、家具１０の転倒を効果的に防止することができる。 Since the damper 3 generates a damping force by the expansion and contraction operation accompanying the swing of the furniture 10, the swing of the furniture 10 is suppressed. Further, since the damper 3 is rotatably connected to the article-side base portion 1 and the ceiling-side base portion 2, the damper 3 follows the shaking of the furniture 10. Therefore, the furniture 10 can be effectively prevented from falling.

＜第２実施形態＞
図６に示すように、転倒防止装置１００の設置方法としては、ダンパ３を鉛直方向に対して傾斜させて設置するのが望ましい。つまり、物品側ベース部１と天井側ベース部２は、水平方向にずれて配置される。転倒防止装置１００をこのように設置することによって、家具１０の転倒をより効果的に防止することができる。以下では、転倒防止装置１００の傾斜設置について詳しく説明する。 Second Embodiment
As shown in FIG. 6, as a method for installing the overturn prevention device 100, it is desirable to install the damper 3 by tilting it with respect to the vertical direction. That is, the article side base portion 1 and the ceiling side base portion 2 are arranged so as to be shifted in the horizontal direction. By installing the fall prevention device 100 in this manner, the furniture 10 can be prevented from falling more effectively. Below, the inclination installation of the fall prevention apparatus 100 is demonstrated in detail.

ダンパ３は、天井側ベース部２に連結されるブラケット３７が物品側ベース部１に連結されるブラケット３６よりも家具１０の背面１０ｂが沿う壁１２から離れる位置に配置されることによって、鉛直方向に対して傾斜して配置される。具体的には、ダンパ３は、天井側ベース部２が物品側ベース部１よりも家具１０の背面１０ｂが沿う壁１２から離れる位置に配置される。このようにして物品側ベース部１と天井側ベース部２を水平方向にずらして配置することによって、家具１０が揺れて家具１０の上部側が壁１２から離れる方向に傾いた場合には、ダンパ３の伸長方向に作用するばね力は家具１０の傾きを抑える方向、つまり家具１０を元の位置に戻そうとするように作用するため、家具１０の転倒がより効果的に防止される。一方、家具１０が揺れて家具１０の上部側が壁１２に近づく方向に傾いた場合には、家具１０は壁１２に当接するため転倒しない。物品側ベース部１と天井側ベース部２を、図６とは逆方向に配置した場合には、つまり、物品側ベース部１を天井側ベース部２よりも壁１２から離れる位置に配置した場合には、ダンパ３の伸長方向に作用するばね力が、家具１０の揺れを助長する方向に作用するため好ましくない。なお、家具１０が壁１２に沿って設置されない場合であっても、ダンパ３を家具１０と天井１１の間に傾斜して配置すれば、家具１０の転倒をより効果的に防止することができる。その場合には、ダンパ３の鉛直方向に対する傾斜方向は、どの方向に傾斜させてもよい。 The damper 3 is arranged in a vertical direction by disposing the bracket 37 connected to the ceiling side base portion 2 away from the wall 12 along which the back surface 10b of the furniture 10 extends rather than the bracket 36 connected to the article side base portion 1. It is inclined with respect to. Specifically, the damper 3 is disposed at a position where the ceiling side base portion 2 is farther from the wall 12 along which the back surface 10b of the furniture 10 extends than the article side base portion 1. When the article-side base portion 1 and the ceiling-side base portion 2 are arranged so as to be shifted in the horizontal direction in this way, when the furniture 10 is shaken and the upper side of the furniture 10 is tilted away from the wall 12, the damper 3 Since the spring force acting in the extending direction acts to suppress the inclination of the furniture 10, that is, to try to return the furniture 10 to the original position, the furniture 10 is more effectively prevented from falling. On the other hand, when the furniture 10 is shaken and the upper side of the furniture 10 is inclined in a direction approaching the wall 12, the furniture 10 abuts against the wall 12 and does not fall down. When the article side base part 1 and the ceiling side base part 2 are arranged in the opposite direction to FIG. 6, that is, when the article side base part 1 is arranged at a position farther from the wall 12 than the ceiling side base part 2. For this reason, the spring force acting in the extension direction of the damper 3 acts in the direction of promoting the shaking of the furniture 10, which is not preferable. Even when the furniture 10 is not installed along the wall 12, if the damper 3 is disposed between the furniture 10 and the ceiling 11, the furniture 10 can be more effectively prevented from falling. . In that case, the inclination direction of the damper 3 with respect to the vertical direction may be inclined in any direction.

鉛直方向に対するダンパ３の傾斜角度α（図６参照）を変化させて転倒防止装置１００を設置した場合の転倒試験結果を図７に示す。図７（ａ）は傾斜角度αが１５度の場合の結果であり、図７（ｂ）は傾斜角度αが２０度の場合の結果であり、図７（ｃ）は傾斜角度αが２５度の場合の結果である。図７（ａ），（ｂ），（ｃ）において、左側の縦軸は家具１０の上部変位量、右側の縦軸は試験機の変位量、横軸は時間である。なお、図７は、試験機にて震度７の揺れを発生させて転倒試験を行った結果である。 FIG. 7 shows a fall test result when the fall prevention device 100 is installed by changing the inclination angle α (see FIG. 6) of the damper 3 with respect to the vertical direction. FIG. 7A shows the result when the tilt angle α is 15 degrees, FIG. 7B shows the result when the tilt angle α is 20 degrees, and FIG. 7C shows the result when the tilt angle α is 25 degrees. Is the result of. 7A, 7 </ b> B, and 7 </ b> C, the left vertical axis is the upper displacement amount of the furniture 10, the right vertical axis is the displacement amount of the testing machine, and the horizontal axis is time. In addition, FIG. 7 is the result of having performed the fall test by generating the shaking of the seismic intensity 7 with a testing machine.

図７（ａ），（ｂ），（ｃ）からわかるように、傾斜角度が１５，２０，２５度のいずれの場合においても、家具１０はほとんど変位せず転倒しなかった。また、傾斜角度１５，２０，２５度のなかでは、傾斜角度２０度の場合が家具１０の変位が一番小さい結果となった。 As can be seen from FIGS. 7 (a), (b), and (c), the furniture 10 hardly displaced and did not fall over in any case where the inclination angle was 15, 20, or 25 degrees. Of the inclination angles of 15, 20, and 25 degrees, the displacement of the furniture 10 was the smallest when the inclination angle was 20 degrees.

図７に示すように、鉛直方向に対するダンパ３の傾斜角度α（図６参照）は、１５度以上２５度以下が好ましい。傾斜角度が１５度未満の場合には、家具１０が大きく傾き家具１０の上部側が壁１２から遠ざかった際には、ダンパ３の伸長方向のばね力が家具１０をさらに傾かせるように作用するおそれがある。一方、鉛直方向に対するダンパ３の傾斜角度αを１５度以上に設定すると、家具１０が大きく傾き家具１０の上部側が壁１２から遠ざかった場合でも、ダンパ３の伸長方向に作用するばね力は家具１０を元の位置に戻そうとするように作用する。そのため、鉛直方向に対するダンパ３の傾斜角度αは、１５度以上に設定するのが好ましい。また、傾斜角度が２５度を超える場合には、ダンパ３の伸長方向のばね力の水平方向成分が、物品側ベース部１と家具１０の頂面１０ａとの摩擦力或いは天井側ベース部２と天井１１との摩擦力よりも大きくなり、物品側ベース部１或いは天井側ベース部２が滑って転倒防止装置１００が家具１０と天井１１の間から外れるおそれがある。一方、鉛直方向に対するダンパ３の傾斜角度αを２５度以下に設定すると、ダンパ３の伸長方向のばね力の水平方向成分が、物品側ベース部１と家具１０の頂面１０ａとの摩擦力或いは天井側ベース部２と天井１１との摩擦力よりも小さくなるため、物品側ベース部１或いは天井側ベース部２が滑ることがない。そのため、鉛直方向に対するダンパ３の傾斜角度αは、２５度以下に設定するのが好ましい。 As shown in FIG. 7, the inclination angle α (see FIG. 6) of the damper 3 with respect to the vertical direction is preferably 15 degrees or more and 25 degrees or less. When the inclination angle is less than 15 degrees, when the furniture 10 is greatly inclined and the upper side of the furniture 10 moves away from the wall 12, the spring force in the extension direction of the damper 3 may act to further tilt the furniture 10. There is. On the other hand, when the inclination angle α of the damper 3 with respect to the vertical direction is set to 15 degrees or more, even when the furniture 10 is greatly inclined and the upper side of the furniture 10 moves away from the wall 12, the spring force acting in the extending direction of the damper 3 is the furniture 10 Acts to return to the original position. Therefore, the inclination angle α of the damper 3 with respect to the vertical direction is preferably set to 15 degrees or more. When the inclination angle exceeds 25 degrees, the horizontal component of the spring force in the extension direction of the damper 3 is the frictional force between the article-side base portion 1 and the top surface 10a of the furniture 10 or the ceiling-side base portion 2. There is a possibility that the article side base portion 1 or the ceiling side base portion 2 slips and the overturn prevention device 100 comes off between the furniture 10 and the ceiling 11 because the frictional force with the ceiling 11 becomes larger. On the other hand, when the inclination angle α of the damper 3 with respect to the vertical direction is set to 25 degrees or less, the horizontal component of the spring force in the extension direction of the damper 3 is the frictional force between the article-side base portion 1 and the top surface 10a of the furniture 10 or Since it becomes smaller than the frictional force between the ceiling side base portion 2 and the ceiling 11, the article side base portion 1 or the ceiling side base portion 2 does not slide. Therefore, the inclination angle α of the damper 3 with respect to the vertical direction is preferably set to 25 degrees or less.

このように、家具１０の揺れを効果的に防止するように転倒防止装置１００を機能させるためには、ダンパ３の傾斜角度が重要である。以下では、転倒防止装置１００を家具１０と天井１１の間に設置する際に、ダンパ３の傾斜角度を１５度以上２５度以下の最適範囲内に容易に設定するための方法について説明する。 Thus, in order to make the fall prevention device 100 function so as to effectively prevent the furniture 10 from shaking, the inclination angle of the damper 3 is important. Below, when installing the fall prevention apparatus 100 between the furniture 10 and the ceiling 11, the method for setting easily the inclination-angle of the damper 3 in the optimal range of 15 degrees or more and 25 degrees or less is demonstrated.

図８に、物品側ベース部１近傍の拡大図を示す。図８に示すように、物品側ベース部１の連結部１ｂには、鉛直方向に対するダンパ３の取り付け角度を示す表示部７０が付される。表示部７０は、ダンパ３の傾斜角度の最適範囲、具体的には１５度以上２５度以下の範囲を示す。表示部７０は、連結部１ｂのピン５１を中心とするダンパ３の傾斜角度α（図６参照）の範囲を示すものであり、ユーザが視認し易い位置に取り付けられる。 FIG. 8 shows an enlarged view of the vicinity of the article-side base portion 1. As shown in FIG. 8, the display part 70 which shows the attachment angle of the damper 3 with respect to a perpendicular direction is attached | subjected to the connection part 1b of the goods side base part 1. As shown in FIG. The display unit 70 indicates an optimum range of the inclination angle of the damper 3, specifically, a range of 15 degrees to 25 degrees. The display unit 70 indicates the range of the inclination angle α (see FIG. 6) of the damper 3 around the pin 51 of the connecting unit 1b, and is attached at a position where the user can easily see.

一方、物品側ベース部１に回動自在に連結されるダンパ３には、ダンパ３の軸線方向に沿って目印７１が付される。目印７１は、物品側ベース部１の連結部１ｂに回動自在に連結されるダンパ３のブラケット３６に取り付けられる。 On the other hand, the damper 3 that is rotatably connected to the article-side base portion 1 is provided with a mark 71 along the axial direction of the damper 3. The mark 71 is attached to the bracket 36 of the damper 3 that is rotatably connected to the connecting portion 1 b of the article-side base portion 1.

転倒防止装置１００を家具１０と天井１１の間に設置する際には、ダンパ３に付された目印７１が物品側ベース部１に付された表示部７０の範囲内に位置するようにダンパ３を傾斜させて設置する。このように、ダンパ３に付された目印７１と物品側ベース部１に付された表示部とを一致させるだけで、ダンパ３の傾斜角度を最適範囲内に容易に設定することができる。 When the fall prevention device 100 is installed between the furniture 10 and the ceiling 11, the damper 3 is positioned so that the mark 71 attached to the damper 3 is located within the range of the display unit 70 attached to the article-side base portion 1. Inclined and installed. As described above, the inclination angle of the damper 3 can be easily set within the optimum range simply by matching the mark 71 attached to the damper 3 with the display portion attached to the article-side base portion 1.

表示部７０と目印７１は、天井側ベース部２の連結部２ｂとダンパ３のブラケット３７に付すようにしてもよい。また、物品側ベース部１の連結部１ｂとダンパ３のブラケット３６に付すと共に、天井側ベース部２の連結部２ｂとダンパ３のブラケット３７にも付すようにしてもよい。このように、表示部７０は、物品側ベース部１の連結部１ｂ及び天井側ベース部２の連結部２ｂの少なくとも一方に付され、目印７１は、ダンパ３のブラケット３６及びブラケット３７の少なくとも一方に付される。 You may make it attach the display part 70 and the mark 71 to the connection part 2b of the ceiling side base part 2, and the bracket 37 of the damper 3. As shown in FIG. Further, it may be attached to the connecting portion 1 b of the article-side base portion 1 and the bracket 36 of the damper 3, and may also be attached to the connecting portion 2 b of the ceiling-side base portion 2 and the bracket 37 of the damper 3. As described above, the display unit 70 is attached to at least one of the connection unit 1b of the article-side base unit 1 and the connection unit 2b of the ceiling-side base unit 2, and the mark 71 is at least one of the bracket 36 and the bracket 37 of the damper 3. It is attached to.

次に、図９を参照して、治具８０を用いてダンパ３の傾斜角度を最適範囲内に設定する方法について説明する。図９（ａ），（ｂ），（ｃ）は、それぞれダンパ３が治具８０に当接した状態の正面図、平面図、側面図である。 Next, a method for setting the inclination angle of the damper 3 within the optimum range using the jig 80 will be described with reference to FIG. FIGS. 9A, 9B, and 9C are a front view, a plan view, and a side view, respectively, of the state where the damper 3 is in contact with the jig 80. FIG.

治具８０は、所定の間隔を空けて鉛直方向に延びる一対の脚部８１ａ，８１ｂと、一対の脚部８１ａ，８１ｂに亘って支持され転倒防止装置１００を家具１０と天井１１の間に設置する際に鉛直方向に対するダンパ３の取り付け角度を設定する傾斜角設定部８２と、を備える。 The jig 80 is supported across a pair of leg portions 81a and 81b extending in the vertical direction at a predetermined interval and the pair of leg portions 81a and 81b, and the fall prevention device 100 is installed between the furniture 10 and the ceiling 11. And an inclination angle setting unit 82 for setting the mounting angle of the damper 3 with respect to the vertical direction.

図９（ｃ）に示すように、一対の脚部８１ａ，８１ｂは、その間隔が物品側ベース部１の基部１ａの幅と同等に形成される。 As shown in FIG. 9C, the pair of leg portions 81 a and 81 b are formed so that the distance between them is equal to the width of the base portion 1 a of the article-side base portion 1.

傾斜角設定部８２は、鉛直方向に延びて形成され物品側ベース部１の連結部１ｂの側面に当接可能な鉛直面８２ａと、鉛直方向に対して傾斜して形成されダンパ３のシリンダ３１の外周面が当接可能な傾斜面８２ｂと、を有する。傾斜面８２ｂの傾斜角度は、ダンパ３の傾斜角度の最適範囲内の角度に設定される。本実施形態では、傾斜面８２ｂは鉛直方向に対して２０度傾斜して形成される。 The inclination angle setting portion 82 is formed to extend in the vertical direction and can be brought into contact with the side surface of the connecting portion 1b of the article-side base portion 1, and the cylinder 31 of the damper 3 formed to be inclined with respect to the vertical direction. And an inclined surface 82b with which the outer peripheral surface can abut. The inclination angle of the inclined surface 82b is set to an angle within the optimum range of the inclination angle of the damper 3. In the present embodiment, the inclined surface 82b is formed with an inclination of 20 degrees with respect to the vertical direction.

転倒防止装置１００を家具１０と天井１１の間に設置する際には、まず、ダンパ３が傾斜せずに直立した状態で、一対の脚部８１ａ，８１ｂにて物品側ベース部１の基部１ａを挟むと共に、傾斜角設定部８２の鉛直面８２ａが物品側ベース部１の連結部１ｂの側面に当接するようにして、治具８０を家具１０の頂面１０ａ上に載置する。 When the fall prevention device 100 is installed between the furniture 10 and the ceiling 11, first, the base 1a of the article-side base 1 is supported by the pair of legs 81a and 81b with the damper 3 standing upright without being inclined. In addition, the jig 80 is placed on the top surface 10a of the furniture 10 so that the vertical surface 82a of the inclination angle setting portion 82 is in contact with the side surface of the connecting portion 1b of the article-side base portion 1.

次に、ダンパ３を治具８０に向けて傾け、シリンダ３１の外周面を傾斜角設定部８２の傾斜面８２ｂに当接させる（図９に示す状態）。傾斜面８２ｂは鉛直方向に対して２０度傾斜して形成されるため、治具８０に当接したダンパ３０は、鉛直方向に対して２０度傾斜した状態となる。この状態で、治具８０を取り外す。 Next, the damper 3 is tilted toward the jig 80, and the outer peripheral surface of the cylinder 31 is brought into contact with the inclined surface 82b of the inclination angle setting portion 82 (state shown in FIG. 9). Since the inclined surface 82b is formed so as to be inclined 20 degrees with respect to the vertical direction, the damper 30 in contact with the jig 80 is inclined 20 degrees with respect to the vertical direction. In this state, the jig 80 is removed.

このように、治具８０の傾斜面８２ｂにシリンダ３１の外周面を当接させることによって、ダンパ３の傾斜角度を最適範囲内に容易に設定することができる。 Thus, by bringing the outer peripheral surface of the cylinder 31 into contact with the inclined surface 82b of the jig 80, the inclination angle of the damper 3 can be easily set within the optimum range.

以上の第２実施形態のように、ダンパ３を鉛直方向に対して傾斜させて転倒防止装置１００を家具１０と天井１１の間に設置することによって、家具１０の転倒を効果的に防止することができる。また、鉛直方向に対するダンパ３の傾斜角度を１５度以上２５度以下に設定することによって、家具１０の転倒をより効果的に防止することができる。 As described above in the second embodiment, the fall of the furniture 10 is effectively prevented by inclining the damper 3 with respect to the vertical direction and installing the fall prevention device 100 between the furniture 10 and the ceiling 11. Can do. Moreover, by setting the inclination angle of the damper 3 with respect to the vertical direction to 15 degrees or more and 25 degrees or less, the furniture 10 can be more effectively prevented from falling.

以上、本発明の実施形態について説明したが、上記実施形態は本発明の適用例の一部を示したに過ぎず、本発明の技術的範囲を上記実施形態の具体的構成に限定する趣旨ではない。 The embodiment of the present invention has been described above. However, the above embodiment only shows a part of application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. Absent.

例えば、上記実施形態は、ダンパ３は、天井側ベース部２が物品側ベース部１よりも家具１０の背面１０ｂが沿う壁１２から離れる位置に配置されることによって、鉛直方向に対して傾斜して配置されるものである。これに代えて、図１０に示すように、天井側ベース部２の基部２ａの幅を物品側ベース部１の基部１ａの幅よりも大きく形成した上で、天井側ベース部２の基部２ａ及び物品側ベース部１の基部１ａを壁１２に接触させて配置することによって、ダンパ３を鉛直方向に対して傾斜して配置するようにしてもよい。 For example, in the above-described embodiment, the damper 3 is inclined with respect to the vertical direction by the ceiling-side base portion 2 being disposed at a position farther from the wall 12 along which the back surface 10b of the furniture 10 extends than the article-side base portion 1. Are arranged. Instead, as shown in FIG. 10, the width of the base 2 a of the ceiling-side base 2 is formed larger than the width of the base 1 a of the article-side base 1, and then the base 2 a of the ceiling-side base 2 and You may make it arrange | position the damper 3 inclining with respect to a perpendicular direction by arrange | positioning the base 1a of the article | base side base part 1 in contact with the wall 12. FIG.

また、上記実施形態では、シリンダ３１内に圧縮ガスを封入することにとって、ダンパ３が伸長方向に作用するばね力を有する構成とした。シリンダ３１に圧縮ガスを封入する代わりに、反ロッド側圧力室３３に付勢手段としてのスプリングを圧縮して設けるようにしてもよい。このように構成しても、ダンパ３は伸長方向に作用するばね力を有する。 Moreover, in the said embodiment, it was set as the structure which has the spring force which the damper 3 acts in an expansion | extension direction for enclosing compressed gas in the cylinder 31. FIG. Instead of enclosing the compressed gas in the cylinder 31, a spring as an urging means may be compressed and provided in the anti-rod side pressure chamber 33. Even if comprised in this way, the damper 3 has the spring force which acts on the expansion | extension direction.

１００転倒防止装置
１物品側ベース部
２天井側ベース部
３ダンパ
１０家具（物品）
１１天井
４０オリフィス（減衰力発生部）
４１逆止弁
４２窒素ガス
５１，５２ピン
７０表示部
７１目印
８０治具
８２傾斜角設定部
８２ａ鉛直面
８２ｂ傾斜面 DESCRIPTION OF SYMBOLS 100 Fall prevention device 1 Article side base part 2 Ceiling side base part 3 Damper 10 Furniture (article)
11 Ceiling 40 Orifice (damping force generator)
41 Check Valve 42 Nitrogen Gas 51, 52 Pin 70 Display Unit 71 Marking 80 Jig 82 Inclination Angle Setting Unit 82a Vertical Surface 82b Inclined Surface

Claims

A fall prevention device for preventing an article from falling,
An article-side base that can contact the article;
A ceiling-side base that can contact the ceiling;
Each of both end portions is rotatably connected to the article-side base portion and the ceiling-side base portion, and a damper that generates a damping force by an expansion / contraction operation associated with the shaking of the article,
Biasing means for biasing the damper in the extending direction;
A fall prevention device comprising:

The damper is
A cylinder in which a working fluid is sealed and is rotatably connected to one of the article-side base portion and the ceiling-side base portion;
A piston that is slidably inserted into the cylinder and divides the inside of the cylinder into two pressure chambers, a rod-side pressure chamber and an anti-rod-side pressure chamber ;
A rod having one end connected to the piston and the other end rotatably connected to the other of the ceiling-side base and the article-side base;
A damping force generating portion provided on the piston and generating a damping force by applying a resistance to the flow of the working fluid between the two pressure chambers accompanying the expansion and contraction operation of the damper;
2. The overturn prevention device according to claim 1, wherein the piston is provided with a check valve that allows only a flow of the working fluid between the two pressure chambers accompanying the extension operation of the damper. 3.

Before SL biasing means overturning prevention device according to claim 2, compressed gas in the cylinder is characterized in that it is a gas spring enclosed.

The overturn prevention device according to claim 2, wherein the biasing means is a spring provided by being compressed in the anti-rod side pressure chamber.

The damper overturning prevention device according to claim 1, any one of the four inclined to, characterized in that disposed between the ceiling and the article with respect to the vertical direction.

One end of the damper is provided with an article-side bracket that is rotatably connected to the article-side base portion,
The other end side of the damper is provided with a ceiling side bracket rotatably connected to the ceiling side base portion,
The damper is arranged so as to be inclined with respect to a vertical direction by arranging the ceiling side bracket at a position farther from the wall along which the back surface of the article extends than the article side bracket. The fall prevention device according to 5 .

The article-side base has a base that contacts the article,
The ceiling side base part has a base part in contact with the ceiling,
The damper is arranged to be inclined with respect to a vertical direction by forming a width of the base portion of the ceiling side base portion larger than a width of the base portion of the article side base portion. Item 6. The fall prevention device according to Item 5.

One end of the damper is provided with an article-side bracket that is rotatably connected to the article-side base through a pin,
On the other end side of the damper, a ceiling-side bracket that is rotatably connected to the ceiling-side base portion via a pin is provided.
The fall prevention device according to any one of claims 1 to 5.

The fall prevention device according to any one of claims 5 to 8, wherein an inclination angle of the damper with respect to a vertical direction is in a range of 15 degrees or more and 25 degrees or less.

At least one of the article side base portion and the roof side base portion, according to any one of claims 5 to 9, characterized in that the display unit is attached showing a mounting angle of said damper with respect to the vertical direction Fall prevention device.

The fall prevention device according to any one of claims 5 to 10 , further comprising a jig that contacts the damper and sets an attachment angle of the damper with respect to a vertical direction.