JP2005213955A

JP2005213955A - Earthquake-proof latch

Info

Publication number: JP2005213955A
Application number: JP2004024770A
Authority: JP
Inventors: Fujio Katagiri; 不二夫片桐
Original assignee: Shimodaira Co Ltd
Current assignee: Shimodaira Co Ltd
Priority date: 2004-01-30
Filing date: 2004-01-30
Publication date: 2005-08-11
Anticipated expiration: 2024-01-30
Also published as: JP3706119B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earthquake-proof latch free of operation during small earthquake and unlocking a door immediately when earthquake settles while preventing the sudden opening of furniture doors with the impact of earthquake. <P>SOLUTION: A rocking hook member B comprises a casing A having a bottom face portion 1 and a front side flat swollen portion 7 formed gradually narrower from four sides of the bottom face portion 1 toward an approximately central position, a rear side flat swollen portion 8 and horizontal side flat swollen portions 9 on both right and left sides, a spherical body 10, a sensing part 11 having a bearing face 11a on the lower face side, recessed to be flat ranging from the outer periphery side toward the approximately central position, and rockingly stored in the casing A, and a hook lever part 12 protruded outward from the sensing part 11 with a hook piece 12a formed at the front end. The sensing part 11 has a mass greater than the hook lever part 12, and it is mounted on the casing at its front position with a rocking center around a boundary position between the sensing part 11 and the hook lever part 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、タンス，食器棚，書籍棚等の家具の扉が地震時に対して、その衝撃で急激に開いてしまうことを防止するとともに、小さな地震においては、極めて僅かの揺れだけでは作動することがなく、しかも地震がおさまると扉のロックを直ぐに解除することができる耐震ラッチに関する。 The present invention prevents furniture doors such as chests, cupboards, and book shelves from opening suddenly due to the impact of an earthquake, and operates in a small earthquake with very little shaking. The present invention also relates to an earthquake-resistant latch that can be immediately unlocked when an earthquake is stopped.

従来より、タンス，食器棚，書籍棚等の水平方向に揺動して開閉する扉を有する家具において、地震時にその震動の衝撃で扉が急激に開き、収納されている物品が外部に飛び出し、これが２次的な災害となって、人を危険にさらすことになる。このような、地震による衝撃によって、家具扉が急激に開いてしまうことを防止するための耐震装置が種々開発されている。このような耐震装置において、特に、地震時の衝撃による球体の転動を利用したものが種々存在している。これは、地震時の振動を感知して静止状態の球体が転動し、その転動による移動にて、耐震装置内に組み込まれた被作動部材が球体の動作に追従して可動するように設定しておき、その被作動部材が家具扉に装着された係止部材と係止するようにしたものである。これによって、家具扉を閉じ状態でロックし、地震時に扉がいきなり開いてしまう事態を防止することができる。 Conventionally, in furniture that has doors that swing and open horizontally, such as chests, cupboards, book shelves, etc., the doors suddenly open due to the shock of the vibration at the time of an earthquake, and the stored items pop out to the outside, This becomes a secondary disaster and puts people at risk. Various earthquake-resistant devices have been developed to prevent furniture doors from opening suddenly due to an impact caused by an earthquake. Among such earthquake-resistant devices, there are various types that utilize the rolling of a sphere due to an impact during an earthquake. This is because the sphere in a stationary state rolls by detecting the vibration at the time of the earthquake, and the actuated member incorporated in the earthquake resistant device moves following the movement of the sphere by the movement due to the rolling. It is set and the actuated member is locked with the locking member mounted on the furniture door. As a result, the furniture door can be locked in a closed state, and a situation in which the door suddenly opens during an earthquake can be prevented.

このような耐震装置として、たとえば、下記特許文献１に示すようなものが存在する。これは、ケース内に球体を収容し、また、そのケースに上下動自在な移動体を設け、地震の揺れに対して球体が前記移動体の方向に回転しながら移動して、移動体に当接させ、この移動体を下方に下げることにより、移動体に追従する作動体を作動させて、この作動体のフックを扉に形成した被係止部材に係止させ、地震の衝撃による扉の開きを防止するものである。このように球体を利用した耐震装置の基本的な構造は、上述したように球体の転動による移動を利用したものがほとんどである。
特開２０００−２４８８１３ As such an earthquake-resistant device, for example, there is one as shown in Patent Document 1 below. This is because a spherical body is accommodated in the case, and a movable body that can move up and down is provided in the case, and the spherical body moves while rotating in the direction of the movable body against the shaking of the earthquake, and hits the movable body. The moving body is moved downward to operate the operating body that follows the moving body, and the hook of the operating body is locked to the locked member formed on the door. This prevents the opening. As described above, most of the basic structures of the seismic resistance device using the sphere as described above utilize the movement due to the rolling of the sphere.
JP 2000-248813 A

上記特許文献１のように、球体の転動を利用した耐震装置は、地震の揺れを敏感に感知して動作するので、地震時には確実に家具扉のロックを行うことができる利点がある。しかし、その反面、揺れの小さな小規模の地震であっても、敏感に感知してしまい、転動してロックをかけてしまうことがあり得る。これによって、家具扉が開かない程度の衝撃以下の地震でもロックがかかってしまうことになり、そのロックをいちいち解除しなければならず、かえって不便となることもある。特に、家具の置き場所を変更するために、僅かに移動するのみであっても、耐震装置のロックがかかってしまうことがあり、そのロック解除がより一層面倒となるものである。 As in the above-mentioned Patent Document 1, the earthquake-resistant device using the rolling of the sphere operates by sensitively detecting the shaking of the earthquake, and thus has an advantage that the furniture door can be surely locked at the time of the earthquake. However, on the other hand, even small earthquakes with small shaking can be sensitively sensed and can roll and lock. As a result, even if the earthquake is less than an impact that does not open the furniture door, it will be locked, and the lock must be released one by one, which may be inconvenient. In particular, even if the furniture is moved slightly in order to change the place where the furniture is placed, the earthquake-resistant device may be locked, and the unlocking becomes even more troublesome.

また、その機構によっては、一旦、ロックがかかると直ぐに元の状態に復帰しにくい機種も存在しうる。このような、地震の揺れの規模により、球体の移動範囲を調整するために、その球体が載置されている面を適宜に傾斜させて、地震の僅かな揺れでは球体が転動しないように試みる調整が行われたものもある。しかし、このような球体が転動する面の調整は、その球体の真球度や、質量等の諸条件が加味され、極めて微妙な調整を強いられるものであり、製造が困難で且つコストも上昇してしまうこととなる。さらに、装置の取付けの精度にも係わることであり、なかなか適正な球体の転動ができる状況を構成することができないものであった。 Also, depending on the mechanism, there may be a model that is difficult to return to its original state as soon as it is locked. In order to adjust the moving range of the sphere according to the magnitude of the earthquake shake, the surface on which the sphere is placed is appropriately tilted so that the sphere does not roll with a slight earthquake shake. Some adjustments have been made. However, the adjustment of the surface on which the sphere rolls is subject to various conditions such as the sphericity of the sphere and the mass, and is subject to extremely delicate adjustments, making it difficult to manufacture and costly. It will rise. Furthermore, it is also related to the accuracy of installation of the apparatus, and it is difficult to constitute a situation in which an appropriate sphere can roll.

さらに、地震の規模による球体の転動を制御するために、球体によって作動する被作動部材を複雑な機構とすることにより、部品点数も多くなり、それに伴い組立も困難で且つ熟練を要し、ひいては製造コストの上昇につながるものである。本発明が解決しようとする技術的課題（目的）は、極めて簡単な構造とし、筺体内における球体が動作を確実なものとし、地震の大きさに合わせてロックをかけ、また地震の終了とともに復帰動作を迅速にすることにある。 Furthermore, in order to control the rolling of the sphere due to the scale of the earthquake, the actuated member operated by the sphere is a complicated mechanism, so the number of parts increases, and as a result, assembly is difficult and requires skill, As a result, the manufacturing cost increases. The technical problem (objective) to be solved by the present invention is to have a very simple structure, ensure that the sphere in the enclosure operates reliably, lock according to the magnitude of the earthquake, and return with the end of the earthquake. It is to speed up the operation.

そこで、発明者は上記課題を解決すべく、鋭意，研究を重ねた結果、本発明を、方形状の底面部上の各４辺より略中央箇所に向かって次第に幅が狭くなるように突出形成された扁平状膨出部を有する筺体に、前記底面部上を移動自在且つ常時は略中央箇所に静止状態となる球体が収納配置され、感知部とフックレバー部とから形成された揺動フック部材が前記筺体に揺動自在に装着され、地震の衝撃により静止状態の前記球体が前記底面部の中央箇所から外周寄りに移動するとともに前記感知部は筺体内で揺動してなる耐震ラッチとしたことにより、上記課題を解決したものである。 Therefore, as a result of intensive studies and researches by the inventors to solve the above problems, the present invention is formed so that the width gradually decreases from the four sides on the bottom surface of the rectangular shape toward the substantially central portion. A swinging hook formed of a sensing portion and a hook lever portion, in which a spherical body that is movable on the bottom surface portion and is always stationary at a substantially central location is accommodated in a housing having a flat bulged portion. An earthquake-resistant latch, wherein a member is swingably attached to the housing, and the sphere in a stationary state is moved toward the outer periphery from the central portion of the bottom surface portion due to an impact of an earthquake, and the sensing portion swings within the housing. As a result, the above-mentioned problems have been solved.

また、方形状の底面部と，該底面部上に各４辺より略中央箇所に向かって次第に幅が狭くなるように突出形成された前方側扁平状膨出部，後方側扁平状膨出部及び左右両側の横側扁平状膨出部とを有する筺体と、該筺体内に回転自在に収納され常時は前記底面部の略中央箇所で静止状態となる球体と、外周側より略中央箇所に向かって扁平状に凹む受面を下面側に有し，前記筺体内に揺動自在に収まる感知部と，該感知部から外方に突出し，その先端にフック片が形成されたフックレバー部とからなる揺動フック部材とからなり、前記感知部は前記フックレバー部よりもその質量が大きく形成され、前記感知部とフックレバー部との境目箇所付近を揺動中心として前記筺体の前方箇所に装着されてなる耐震ラッチとしたことにより、上記課題を解決したものである。 Also, a rectangular bottom surface portion, and a front side flat bulging portion and a rear side flat bulging portion formed on the bottom surface portion so as to gradually narrow toward the substantially central portion from each of the four sides. And a housing having a laterally flattened bulging portion on both the left and right sides, a sphere that is rotatably housed in the housing and is normally stationary at a substantially central location of the bottom surface, and a substantially central location from the outer peripheral side. A sensing portion having a receiving surface that is recessed in a flat shape on the lower surface side, and is swingably accommodated in the housing; a hook lever portion that protrudes outward from the sensing portion and has a hook piece formed at the tip thereof; The sensing part is formed with a mass larger than that of the hook lever part, and is located at the front part of the housing around the boundary part between the sensing part and the hook lever part. Due to the seismic latch being installed, the above problem Resolve those were.

さらに、前述の構成において、前記底面部は外周側より略中央箇所に向かって略扁平状に凹む形状としたり、前記前方側扁平状膨出部及び後方側扁平状膨出部は、前記両横側扁平状膨出部よりも高く形成されたり、或いは前記後方側扁平状膨出部は略三角形状に形成され、その外周箇所は傾斜面として形成されてなる構成としたり、前記前方側扁平状膨出部は、底面部の中心側に対向する立上り面を有し、且つ該立上り面は、中央より底面部の幅方向両側に向かって筺体前方側に傾斜してなる耐震ラッチとしたことにより、上記課題を解決したものである。 Further, in the above-described configuration, the bottom surface portion has a shape that is recessed in a substantially flat shape from the outer peripheral side toward a substantially central location, or the front flat bulged portion and the rear flat bulged portion are It is formed higher than the side flat bulging portion, or the rear flat bulging portion is formed in a substantially triangular shape, and the outer peripheral portion is formed as an inclined surface, or the front flat shape The bulging portion has a rising surface facing the center side of the bottom surface portion, and the rising surface is an earthquake-resistant latch that is inclined toward the front side of the housing from the center toward both sides in the width direction of the bottom surface portion. The above-mentioned problems are solved.

請求項１の発明によれば、家具扉の開きそうな揺れを有する通常の大きさの地震発生時のみ、扉を閉め状態でロックをかけて、扉が急激に開くことを防止することができる。また、前記扉が開かない程度の揺れの地震の発生時では、扉を閉め状態でロックをかけないようにすることができ、小さな地震にもかかわらず、扉が閉め状態でロックがかかってしまい、いちいちロックの解除を行うという面倒な作業から開放される。さらに一旦、ロックがかかっても、その地震がおさまると、直ぐにロックを解除することができるものである。 According to the invention of claim 1, the door can be locked in a closed state only when an earthquake of a normal magnitude having a swing that the furniture door is likely to open, and the door can be prevented from opening suddenly. . In addition, in the event of a quake that does not open the door, the door can be locked when the door is closed, and the door is locked when the door is closed despite a small earthquake. This frees you from the troublesome task of unlocking each time. Furthermore, once locked, once the earthquake has subsided, it can be unlocked immediately.

また、請求項２の発明によれば、装置全体の構造を極めて簡単にすることができ、部品点数を最小限にして、組み立てやすくさらに確実なる動作を実現できるものである。次に、請求項３の発明によれば、球体は底面部の中心箇所に安定した状態で静止状態を維持することができ、誤動作を生じにくいものにできる。さらに、請求項４の発明によれば、特に地震終了後の球体の底面部の中心箇所への復帰をより一層迅速且つ確実にすることができる。請求項５及び請求項６の発明によれば、球体をケーシングの隅角に案内し、扉を開かせるような最小限の揺れの地震の発生時であっても、扉を閉め状態で確実にロックすることができる。 According to the invention of claim 2, the structure of the entire apparatus can be made extremely simple, the number of parts can be minimized, and a more reliable operation can be realized with ease of assembly. Next, according to the invention of claim 3, the sphere can maintain a stationary state in a stable state at the central portion of the bottom surface portion, and it is possible to prevent malfunction. Furthermore, according to the invention of claim 4, it is possible to make the return to the central portion of the bottom surface of the sphere especially after the end of the earthquake even quicker and more reliable. According to the fifth and sixth aspects of the present invention, the sphere is guided to the corner of the casing, and the door can be securely closed even when a minimum shaking earthquake that causes the door to open is generated. Can be locked.

以下、本発明を図面に基づいて説明する。まず、本発明は、主に筺体Ａ，揺動フック部材Ｂ，球体１０から構成され、実際に使用するときには被係止部材１６が付加される。その筺体Ａは、底面部１，前方側部２，後方側部３及び左右の両立上り側部４，４とから構成され、これらによって図１（Ａ），図２等に示すように、略直方体，立方体等の筺形状に形成され、内部の形状も略直方体や立方体の空間が構成されるように形成されている。その筺体Ａの上部は、開口部となっており、後述する球体１０，揺動フック部材Ｂを収納し、且つキャップ材１５を装着するものである。ここで、図１１（Ａ）に示すように、前記筺体Ａの前方側部２は、その筺体Ａが家具本体２０に装着された状態で、外方に向かうように設置され、後方側部３は家具本体２０の奥側に向かって位置するものである。 Hereinafter, the present invention will be described with reference to the drawings. First, the present invention is mainly composed of a casing A, a swinging hook member B, and a sphere 10, and a locked member 16 is added when actually used. The housing A is composed of a bottom surface portion 1, a front side portion 2, a rear side portion 3, and left and right compatible upside portions 4, 4, and as shown in FIG. 1 (A), FIG. It is formed in a bowl shape such as a rectangular parallelepiped or a cube, and the internal shape is also formed so as to constitute a substantially rectangular parallelepiped or cubic space. The upper part of the housing A is an opening, which accommodates a spherical body 10 and a swinging hook member B, which will be described later, and is attached with a cap material 15. Here, as shown in FIG. 11 (A), the front side portion 2 of the case A is installed so as to face outward in a state where the case A is mounted on the furniture body 20, and the rear side portion 3. Is located toward the back side of the furniture body 20.

前記前方側部２には、図１（Ａ），図２等に示すように、切除部２ａが形成され、後述する揺動フック部材Ｂのフックレバー部１２が筺体Ａ内から外部に突出するための部位となっている〔図１（Ｄ）参照〕。前記切除部２ａは、略方形状に形成され、揺動フック部材Ｂのフックレバー部１２の揺動動作がスムーズに行われるものである。また、前記両立上り側部４，４で且つ前方側部２寄りには、図２（Ａ），（Ｂ）に示すように、揺動フック部材Ｂの揺動中心部となる軸受溝４ａ，４ａが形成されている。該軸受溝４ａは、略Ｕ字形状に形成されたものであり、その軸受溝４ａの下端は円弧状終端部４ａ₁となっており、該円弧状終端部４ａ₁に後述する揺動フック部材Ｂの枢支突起１３が回動自在に装着される。前記円弧状終端部４ａ₁の位置は、立上り側部４の高さ方向の略中間位置となっている。 As shown in FIG. 1A, FIG. 2, etc., the front side portion 2 is formed with a cut-out portion 2a, and a hook lever portion 12 of a swinging hook member B described later protrudes from the inside of the housing A to the outside. [See FIG. 1D]. The cut portion 2a is formed in a substantially square shape, and the swinging motion of the hook lever portion 12 of the swinging hook member B is smoothly performed. Further, on the side of the compatible ascending side portions 4 and 4 and closer to the front side portion 2, as shown in FIGS. 2 (A) and 2 (B), a bearing groove 4a serving as a swinging central portion of the swinging hook member B, 4a is formed. The bearing groove 4a has been formed into a substantially U-shaped, lower end of the bearing groove 4a is an arc-shaped end portion 4a _1, the pivot hook member to be described later in the circular arc end portion 4a ₁ B's pivotal protrusion 13 is rotatably mounted. The position of the arcuate end portion 4a ₁ is a substantially intermediate position in the height direction of the rising side portion 4.

その筺体Ａの前方側部２の上端箇所で且つ幅方向両側端箇所には、図１（Ｂ），図２（Ａ）に示すように、前方側に突出するように２本の固定用支持部５，５が形成されている。該固定用支持部５，５は、前記筺体Ａをタンス，棚等の家具本体２０側（収納側）に装着するための部位であり、前記固定用支持部５，５には、ビス等の固着具用の貫通孔５ａ，５ａが形成されている。また前記固定用支持部５，５と前方側部２及び両立上り側部４，４との間に補強用リブ６，６が形成されることもあり、これによって前記筺体Ａをより一層強固に家具本体２０に装着することができる。該筺体Ａの上部に位置する開口箇所には、段部が形成され、後述するキャップ材１５が適正に装着されるようになっている。 As shown in FIGS. 1 (B) and 2 (A), two fixing supports are provided at the upper end portion of the front side portion 2 of the housing A and at both end portions in the width direction so as to protrude forward. Portions 5 and 5 are formed. The fixing support portions 5 and 5 are portions for mounting the casing A on the furniture main body 20 side (storage side) such as a chiffon and a shelf. The fixing support portions 5 and 5 include screws and the like. Through holes 5a and 5a for the fasteners are formed. In addition, reinforcing ribs 6 and 6 may be formed between the fixing support portions 5 and 5 and the front side portion 2 and the compatible ascending side portions 4 and 4, thereby further strengthening the casing A. It can be attached to the furniture body 20. A step portion is formed at an opening portion located on the upper portion of the housing A, and a cap material 15 described later is appropriately attached.

前記底面部１は、図３（Ａ）に示すように、外周側より略中央箇所に向かって扁平に近い略すり鉢状に凹み形成されたものである。その底面部１の外周部分とは、前方側部２，後方側部３及び両立上り側部４，４との隅角箇所のことである。前記底面部１は、前述したように、略扁平すり鉢状に形成されたものであり、そのすり鉢状とした面の最も低い位置にて前記球体１０が静止することになる。すなわち、底面部１の外周箇所を最も肉厚の厚い部位を厚さＴｏとすると、その最も肉厚の薄い部分の厚さをＴｐとする。 As shown in FIG. 3 (A), the bottom surface portion 1 is formed in a substantially mortar-like shape that is almost flat toward the center portion from the outer peripheral side. The outer peripheral portion of the bottom surface portion 1 is a corner portion of the front side portion 2, the rear side portion 3, and the compatible ascending side portions 4, 4. As described above, the bottom surface portion 1 is formed in a substantially flat mortar shape, and the sphere 10 is stationary at the lowest position of the mortar-shaped surface. That is, assuming that the thickest portion of the outer peripheral portion of the bottom surface portion 1 is the thickness To, the thickness of the thinnest portion is Tp.

この底面部１の厚さＴｐの箇所は、球体１０が常時は安定した状態で静止することができる箇所で、その位置を静止位置Ｐと称する。この底面部１の外周の最も肉厚のある厚さＴｏ箇所から薄い厚さＴｐの部分への勾配θは、極めて小さな角度であり、具体的には、約３度程度である〔図３（Ｂ），（Ｃ）等参照〕。その底面部１のすり鉢形状は、扁平円錐形状に近いものであるが、必ずしもこの形状に限定されるものではなく、扁平球面状としても構わない。その静止位置Ｐは、底面部１の略中央箇所に位置している。この底面部１の中央箇所とは、適宜の広さを有する領域であって、該底面部１の真の中心位置に限定されるものではなく、真の中心位置周辺も含み、この真の中心位置から適宜に離れた位置であっても、前記底面部１の中心箇所の範囲に含まれるものであり、ここに静止位置Ｐが設定されることになる〔図３（Ａ）参照〕。 The portion having the thickness Tp of the bottom surface portion 1 is a portion where the sphere 10 can be always stationary in a stable state, and the position is referred to as a stationary position P. The gradient θ from the thickest thickness To portion on the outer periphery of the bottom surface portion 1 to the thin thickness portion Tp is a very small angle, specifically, about 3 degrees [FIG. B), (C) etc.]. The mortar shape of the bottom surface portion 1 is close to a flat conical shape, but is not necessarily limited to this shape, and may be a flat spherical shape. The stationary position P is located at a substantially central position of the bottom surface portion 1. The center portion of the bottom surface portion 1 is a region having an appropriate area, and is not limited to the true center position of the bottom surface portion 1, and includes the periphery of the true center position. Even a position appropriately separated from the position is included in the range of the central portion of the bottom surface portion 1, and the stationary position P is set here (see FIG. 3A).

そして、前記底面部１の４つの各辺には、図２（Ａ），図３（Ａ）等に示すように、前方側扁平状膨出部７，後方側扁平状膨出部８及び左右両側の横側扁平状膨出部９とが形成されている。まず前方側扁平状膨出部７は、底面部１において前方側部２寄り箇所に形成されている。また、後方側扁平状膨出部８は、前記底面部１において後方側部３寄り箇所に形成されている。さらに、両横側扁平状膨出部９，９は、底面部１において、両立上り側部４，４寄り箇所に形成されている〔図２（Ａ）及び図３（Ａ）参照〕。 Further, as shown in FIGS. 2 (A), 3 (A), etc., the front side flat bulging portion 7, the rear side flat bulging portion 8 and the left and right sides are provided on each of the four sides of the bottom surface portion 1. The lateral flat bulging portions 9 on both sides are formed. First, the front side flat bulging portion 7 is formed at a location near the front side portion 2 in the bottom surface portion 1. Further, the rear flat bulging portion 8 is formed at a location near the rear side portion 3 in the bottom surface portion 1. Furthermore, the both lateral flat bulging portions 9 and 9 are formed on the bottom surface portion 1 near the compatible ascending side portions 4 and 4 (see FIGS. 2A and 3A).

これら前方側扁平状膨出部７，後方側扁平状膨出部８及び横側扁平状膨出部９は、前記底面部１の略中央箇所の静止位置Ｐに向かって、その幅方向に幅が次第に狭くなるように突出形成されている。具体的には、その前方側扁平状膨出部７は、略台形状に形成され、その底面部１の中心側寄りの部位は小立上り面７ａが形成されている。該小立上り面７ａは、急勾配面であり、前方側扁平状膨出部７と底面部１との段差部位となっている。 The front side flat bulging portion 7, the rear side flat bulging portion 8, and the lateral flat bulging portion 9 have a width in the width direction toward a stationary position P at a substantially central portion of the bottom surface portion 1. Is formed so as to gradually narrow. Specifically, the front-side flat bulging portion 7 is formed in a substantially trapezoidal shape, and a portion near the center side of the bottom surface portion 1 is formed with a small rising surface 7a. The small rising surface 7 a is a steeply inclined surface and is a step portion between the front flat bulged portion 7 and the bottom surface portion 1.

その小立上り面７ａは、幅方向中心箇所にて折線を介して２面構成に形成され、幅方向の両側に向かうに従い、前記前方側部２寄りに接近する。その２面構成とした２つの面をそれぞれ単位立上り面７ａ₁，７ａ₁と称する。また、前方側扁平状膨出部７の上面７ｂも幅方向両側に向かうに従い底面部１に連続するように傾斜している。その上面７ｂは、幅方向中心位置の折線を介して幅方向両側が底面部１に向かって傾斜するように形成されている。また、前記上面７ｂの折線は前方側部２に向かって高くなるように傾斜状に形成されている。その上面７ｂは、折線を介して両側を単位上面７ｂ₁，７ｂ₁と称する。 The small rising surface 7a is formed in a two-surface configuration via a broken line at the center in the width direction, and approaches the front side portion 2 as it goes to both sides in the width direction. The two surfaces having the two-surface configuration are referred to as unit rising surfaces 7a ₁ and 7a ₁ , respectively. Further, the upper surface 7b of the front flat bulging portion 7 is also inclined so as to be continuous with the bottom surface portion 1 as it goes to both sides in the width direction. The upper surface 7b is formed such that both sides in the width direction are inclined toward the bottom surface portion 1 via a broken line at the center position in the width direction. Further, the fold line of the upper surface 7 b is formed in an inclined shape so as to become higher toward the front side portion 2. The upper surface 7b is referred to as unit upper surfaces 7b ₁ and 7b _{1 on} both sides via a broken line.

次に、後方側扁平状膨出部８は、略三角形状に形成されたものであり、その外周の斜辺箇所は、底面部１に近接するに従い広がるように傾斜面８ａ，８ａとして形成されている。また、その上面８ｂは、略平坦状に形成されている。その後方側扁平状膨出部８の先端部は、鋭角に形成されている。次に、前記横側扁平状膨出部９は、前記底面部１の中央箇所に向かって小立上り面９ａが形成され、上面９ｂは幅方向中央より両面が底面部１に連続するように形成されている。そして、前記前方側扁平状膨出部７及び後方側扁平状膨出部８は、前記両横側扁平状膨出部９，９よりも高く形成されることが好ましい。 Next, the rear-side flat bulging portion 8 is formed in a substantially triangular shape, and the oblique sides of the outer periphery thereof are formed as inclined surfaces 8a and 8a so as to expand as they approach the bottom surface portion 1. Yes. Further, the upper surface 8b is formed in a substantially flat shape. The tip of the rear side flat bulging portion 8 is formed at an acute angle. Next, the lateral flat bulging portion 9 is formed such that a small rising surface 9a is formed toward the central portion of the bottom surface portion 1, and the upper surface 9b is formed so that both surfaces are continuous with the bottom surface portion 1 from the center in the width direction. Has been. And it is preferable that the said front side flat bulging part 7 and the back side flat bulging part 8 are formed higher than the said both lateral flat bulging parts 9,9.

上記前方側扁平状膨出部７，後方側扁平状膨出部８及び両横側扁平状膨出部９，９のそれぞれの隣接する箇所は、底面部１のみの面となっている。すなわち、図２（Ａ），図３（Ａ）に示すように、筺体Ａの４箇所の隅角部箇所に底面部１のみとなる球体通路１ａが形成されている。この球体通路１ａは、静止位置Ｐに位置する球体１０が地震の揺れを感知して転動するときに、その揺れが小さい場合には、図５（Ａ），（Ｂ）に示すように、前記球体１０がそれぞれの扁平状膨出部により球体通路１ａの方向に案内されてゆくものである。また、地震の揺れが大きい場合には、図８（Ａ），（Ｂ）に示すように、前記球体１０に勢いがあるので、転動して各扁平状膨出部を載り越えて底面部１の外周に到達することができる。 Each of the adjacent portions of the front flat bulged portion 7, the rear flat bulged portion 8 and the lateral flat bulged portions 9 and 9 is a surface of the bottom surface portion 1 alone. That is, as shown in FIGS. 2 (A) and 3 (A), spherical passages 1a having only the bottom portion 1 are formed at four corner portions of the casing A. As shown in FIGS. 5 (A) and 5 (B), when the sphere 10 located at the stationary position P rolls while detecting the quake of the earthquake, and the sphere 10 The spherical body 10 is guided in the direction of the spherical passage 1a by the respective flat bulging portions. In addition, when the earthquake shakes greatly, as shown in FIGS. 8A and 8B, since the sphere 10 has momentum, it rolls over the flat bulges and reaches the bottom surface. 1 can be reached.

前記前方側扁平状膨出部７，後方側扁平状膨出部８及び横側扁平状膨出部９の形状には、以下に説明する関係が存在する。まず、図３に示すように、前方側扁平状膨出部７の形成箇所の各主要ポイントの厚さについては、底面部１の下面箇所を基準位置とすると、前方側部２寄り端部箇所を最大厚さを（Ｔａ₁）とする。また、前記底面部１の静止位置Ｐ寄りの形成位置における厚さを（Ｔａ₂）とする。さらにその前方側扁平状膨出部７と底面部１とに生じる段差部の厚さを（Ｔａ₃）とする。前方側扁平状膨出部７の静止位置Ｐ寄りの底面部１からの段差の最大高さｈａは、上記により折線箇所の（Ｔａ₃−Ｔａ₂）である。この段差の最大高さ（ｈ_a）は、前方側扁平状膨出部７の幅方向両側に向かうに従い次第に減少し消滅する。 The shapes of the front flat bulged portion 7, the rear flat bulged portion 8, and the lateral flat bulged portion 9 have the relationship described below. First, as shown in FIG. 3, regarding the thickness of each main point of the location where the front side flat bulging portion 7 is formed, assuming that the lower surface location of the bottom surface portion 1 is the reference position, the location near the front side portion 2 Is the maximum thickness (Ta ₁ ). The thickness of the bottom surface portion 1 at the formation position near the stationary position P is defined as (Ta ₂ ). Further, the thickness of the stepped portion generated between the front flat bulged portion 7 and the bottom surface portion 1 is defined as (Ta ₃ ). The maximum height ha of the step from the bottom surface portion 1 near the stationary position P of the front side flat bulging portion 7 is (Ta ₃ −Ta ₂ ) at the broken line portion as described above. Maximum height of the step (h _a) is gradually reduced to disappear toward the both sides in the width direction of the front side flat curved portions 7.

また、後方側扁平状膨出部８の各主要ポイントの厚さは、底面部１の下面箇所を基準位置とすると、後方側部３寄り端部箇所を最大厚さ（Ｔｂ₁）とする。この後方側扁平状膨出部８は、上面８ｂが略平坦状なので、上面８ｂ箇所の厚さともいえる。また、前記底面部１の静止位置Ｐ寄りの形成位置における厚さを（Ｔｂ₂）とする。さらにその段差部の厚さは、上面８ｂが前述したように平坦状であるため（Ｔｂ₁）となる。そこで、後方側扁平状膨出部８における底面部１との段差部の最大高さ（ｈ_b）は、（Ｔｂ₁−Ｔｂ₂）となる。また、前述したように、その後方側扁平状膨出部８における段差箇所は傾斜面である。 In addition, regarding the thickness of each main point of the rear side flat bulging portion 8, assuming that the lower surface portion of the bottom surface portion 1 is a reference position, the end portion closer to the rear side portion 3 is set to the maximum thickness (Tb ₁ ). The rear flat bulged portion 8 can be said to be the thickness of the upper surface 8b because the upper surface 8b is substantially flat. Further, the thickness at the formation position of the bottom surface portion 1 near the stationary position P is (Tb ₂ ). Further, the thickness of the stepped portion is (Tb ₁ ) because the upper surface 8b is flat as described above. Therefore, the maximum height (h _b ) of the step portion of the rear flat bulged portion 8 with respect to the bottom surface portion 1 is (Tb ₁ −Tb ₂ ). Moreover, as mentioned above, the level | step-difference location in the back side flat bulging part 8 is an inclined surface.

次に、前記横側扁平状膨出部９の形成箇所の各主要ポイントの厚さについては、底面部１の下面箇所を基準位置とすると、立上り側部４寄り端部箇所を最大厚さ（Ｔｃ₁）とする。また、前記底面部１の静止位置Ｐ寄りの形成位置における厚さを（Ｔｃ₂）とする。さらにその横側扁平状膨出部９と底面部１とに生じる段差部の厚さを（Ｔｃ₃）とする。横側扁平状膨出部９の静止位置Ｐ寄りの底面部１からの段差の最大高さ（ｈ_c）は、上記により折線箇所の（Ｔｃ₃−Ｔｃ₂）である。この段差の高さは、横側扁平状膨出部９の幅方向両側に向かうに従い次第に減少し消滅する。前記前方側扁平状膨出部７の段差の最大高さ（ｈ_a）と、後方側扁平状膨出部８との段差の最大高さ（ｈ_b）は、略同一であり、横側扁平状膨出部９の最大高さ（ｈ_c）は、前方側扁平状膨出部７，後方側扁平状膨出部８の各最大高さ（ｈ_a）及び最大高さ（ｈ_b）よりも低く設定されている。 Next, regarding the thickness of each main point of the formation portion of the lateral flat bulging portion 9, assuming that the lower surface portion of the bottom surface portion 1 is the reference position, the end portion closer to the rising side portion 4 has the maximum thickness ( Tc ₁ ). The thickness of the bottom surface portion 1 at the formation position near the stationary position P is defined as (Tc ₂ ). Further, the thickness of the stepped portion generated between the lateral flat bulged portion 9 and the bottom surface portion 1 is defined as (Tc ₃ ). The maximum height (h _c ) of the step from the bottom surface portion 1 near the stationary position P of the lateral flat bulging portion 9 is (Tc ₃ -Tc ₂ ) at the broken line portion as described above. The height of the step gradually decreases and disappears toward the both sides in the width direction of the lateral flat bulging portion 9. The maximum height (h _a ) of the step of the front flat bulging portion 7 and the maximum height (h _b ) of the step of the rear flat bulging portion 8 are substantially the same. maximum height of Jo bulging portion 9 (h _c) are front flat curved portions 7, each of the maximum height of the rear side flat curved portions 8 (h _a) and the maximum height from the (h _b) Is set too low.

すなわち、横側扁平状膨出部９の段差部の最大高さ（ｈ_c）は、前方側扁平状膨出部７の段差の最大高さ（ｈ_a）又は後方側扁平状膨出部８の段差の最大高さ（ｈ_b）よりも低く形成されているので、前記球体１０の転動コースに及ぼす影響は小さいものである。そして、前記球体１０が前方側部２側の球体通路１ａに案内されて前方側部２側の隅角箇所に案内された球体１０は、前方側扁平状膨出部７側からの影響をより強く受けて静止位置Ｐに復帰しようとする〔図６（Ａ），（Ｂ）参照〕。同様に、前記球体１０が後方側部３側の球体通路１ａに案内されて後方側部３側の隅角箇所に案内された球体１０は、後方側扁平状膨出部８側からの影響をより強く受けて静止位置Ｐに復帰しようとする〔図７（Ａ），（Ｂ）参照〕。 That is, the maximum of the step portion of the lateral flat curved portions 9 height (h _c), the maximum height of the step of the front side flat curved portions 7 (h _a) or rear side flat curved portions 8 Is less than the maximum height (h _b ) of the step, the influence on the rolling course of the sphere 10 is small. The sphere 10 guided by the sphere passage 1a on the front side 2 side and guided to the corner portion on the front side 2 side is more affected by the front flat bulge 7 side. It is strongly received and tries to return to the rest position P (see FIGS. 6A and 6B). Similarly, the sphere 10 guided by the sphere passage 1a on the rear side portion 3 side and guided to the corner portion on the rear side portion 3 side has an influence from the rear flat bulging portion 8 side. It is more strongly received and tries to return to the stationary position P (see FIGS. 7A and 7B).

これらの扁平状膨出部によって、まず極めて小さな地震の場合には、底面部１の静止位置Ｐに静止状態で配置された球体１０は、地震の前後方向の揺れで転動するが、前記球体１０の勢いが少ないので、前方側扁平状膨出部７又は後方側扁平状膨出部８の段差部に当たってこれらを載りきることができず、跳ね返って、静止位置Ｐに戻る。すなわち、極めて小さい地震では、球体１０が静止位置Ｐから転動して移動しても、底面部１の外周に到る前に跳ね返されてしまい、揺動フック部材Ｂの感知部１１を押し上げることなく、よって扉２１の閉じ状態のロックを行わない。これは、極めて小さな地震では、あえて、極めて僅かの揺れだけでは、扉２１を閉じ状態でロックしないようにしたものである。これによって、極めて小さな地震が起こるたびに、扉２１が閉じ状態でロックされてしまい、その面倒なロック解除作業を行わずに済むものである。 Due to these flat bulged portions, first, in the case of an extremely small earthquake, the sphere 10 placed in a stationary state at the stationary position P of the bottom surface portion 1 rolls by shaking in the longitudinal direction of the earthquake. Since the momentum 10 is small, they cannot hit the stepped portions of the front flat bulged portion 7 or the rear flat bulged portion 8 and cannot be completely loaded, bounce back and return to the stationary position P. That is, in an extremely small earthquake, even if the sphere 10 rolls and moves from the stationary position P, it is rebounded before reaching the outer periphery of the bottom surface portion 1 and pushes up the sensing portion 11 of the swing hook member B. Therefore, the door 21 is not locked in the closed state. In this case, in an extremely small earthquake, the door 21 is not locked in the closed state with only a slight shaking. As a result, every time an extremely small earthquake occurs, the door 21 is locked in the closed state, and the troublesome unlocking operation can be avoided.

次に、上記小さな地震よりも少し大きな揺れを生じて、扉２１がその揺れで開いてしまうような地震の場合については、前記底面部１の静止位置Ｐに静止状態で配置された球体１０は、地震の前後方向の揺れで転動するが、前記球体１０の勢いが少ないので、前方側扁平状膨出部７又は後方側扁平状膨出部８の段差部に当たってこれらを載りきることができない。しかし、球体１０にはある程度の勢いはあるので、図５乃至図７に示すように扁平状膨出部から球体１０の移動コースが変えられて、その隣接する前方側扁平状膨出部７と横側扁平状膨出部９との間の球体通路１ａ、又は隣接する後方側扁平状膨出部８と横側扁平状膨出部９との間の球体通路１ａに案内される。 Next, in the case of an earthquake in which the door 21 opens due to the shaking that is slightly larger than the small earthquake, the sphere 10 placed in a stationary state at the stationary position P of the bottom surface portion 1 is Rolling by the shaking in the front-rear direction of the earthquake, but because the moment of the sphere 10 is small, it cannot hit the stepped portion of the front side flat bulging portion 7 or the rear side flat bulging portion 8 and can not be mounted on them. . However, since the sphere 10 has a certain amount of momentum, the movement course of the sphere 10 is changed from the flat bulging portion as shown in FIGS. 5 to 7, and the adjacent front side flat bulging portion 7 and It is guided to the spherical passage 1 a between the lateral flat bulging portion 9 or the spherical passage 1 a between the adjacent rear flat bulging portion 8 and the lateral flat bulging portion 9.

そして、前記球体１０が底面部１の外周箇所、すなわち筺体Ａの隅角箇所に到達することができる。このとき、球体１０は、図４（Ｂ），（Ｃ）及び図１２（Ｂ）等に示すように、後述する揺動フック部材Ｂの感知部１１を上方に押し上げることにより、扉２１の閉じ状態のロックを行うことができる。 The spherical body 10 can reach the outer peripheral portion of the bottom surface portion 1, that is, the corner portion of the casing A. At this time, as shown in FIGS. 4 (B), 4 (C), and 12 (B), the sphere 10 closes the door 21 by pushing up the sensing portion 11 of the swing hook member B described later. A state lock can be performed.

また、通常又は大きな地震の場合には、その揺れが大きいので、球体１０は静止位置Ｐから大きな勢いを得て、転動し、図８（Ａ），（Ｂ）に示すように、前方側扁平状膨出部７の段差（小立上り面７ａ）又は後方側扁平状膨出部８の段差部（傾斜面８ａ）を載り越えて行くことができる。これによって、球体１０は最短距離にて底面部１の外周箇所に到達し、且つ、前方側扁平状膨出部７又は後方側扁平状膨出部８の段差部（傾斜面８ａ）を載り越えることで、球体１０はいきなり上方に移動することとなり、揺動フック部材Ｂの感知部１１を地震の発生と同時に押し上げて、扉２１の閉じ状態をロックすることができる。 Further, in the case of a normal or large earthquake, since the shaking is large, the sphere 10 gains a large momentum from the stationary position P and rolls, as shown in FIGS. 8 (A) and 8 (B). The stepped portion (small rising surface 7a) of the flat bulging portion 7 or the stepped portion (inclined surface 8a) of the rear flat bulging portion 8 can be carried over. As a result, the sphere 10 reaches the outer peripheral portion of the bottom surface portion 1 at the shortest distance, and rides over the stepped portion (inclined surface 8a) of the front flat bulged portion 7 or the rear flat bulged portion 8. As a result, the sphere 10 suddenly moves upward, and the sensing portion 11 of the swinging hook member B can be pushed up simultaneously with the occurrence of the earthquake to lock the closed state of the door 21.

すなわち、通常の大きさの地震では、前方側扁平状膨出部７，後方側扁平状膨出部８及び両横側扁平状膨出部９，９がむしろ、球体１０に対してその移動動作を機敏にさせることができるものである。その球体１０は、底面部１の外周箇所まで移動することができるように、それぞれの扁平状膨出部の段差箇所の高さが設定されている。また、横側扁平状膨出部９はその段差（小立上り面９ａ）を小さくしてあり、家具本体２０の左右方向の揺れにても扉２１の閉じ状態のロックをかかりやすくしたものである。 That is, in a normal earthquake, the front side flat bulging portion 7, the rear side flat bulging portion 8, and the lateral flat bulging portions 9, 9 are rather moved relative to the sphere 10. Can be agile. The height of the stepped portion of each flat bulging portion is set so that the sphere 10 can move to the outer peripheral portion of the bottom surface portion 1. Further, the lateral flat bulging portion 9 has a small step (small rising surface 9 a), which makes it easy to lock the door 21 in the closed state even when the furniture body 20 shakes in the left-right direction. .

また、転動して静止位置Ｐから移動した球体１０が元の静止位置Ｐに戻る動作も極めて滑らかに行われる。これは、球体１０が底面部１の外周箇所から静止位置Ｐに戻る行程で、底面部１が扁平すり鉢状であり、且つ前方側扁平状膨出部７の小立上り面７ａ、又は後方側扁平状膨出部８の周囲の傾斜面８ａによって、球体１０に静止位置Ｐに戻る勢いが付加されることになり、その球体１０の静止位置Ｐへの復帰が比較的早く行われるものである〔図６（Ｂ），図７（Ｂ）参照〕。 Further, the movement of the sphere 10 that has been rolled and moved from the stationary position P to the original stationary position P is also performed extremely smoothly. This is a process in which the sphere 10 returns from the outer peripheral portion of the bottom surface portion 1 to the stationary position P, the bottom surface portion 1 has a flat mortar shape, and the small rising surface 7a of the front flat bulged portion 7 or the rear flat surface. The inclined surface 8a around the bulging portion 8 adds momentum to the sphere 10 to return to the stationary position P, and the sphere 10 is returned to the stationary position P relatively quickly [ (See FIGS. 6B and 7B).

このように、筺体Ａの底面部１の各４辺より略中央箇所に向かって次第に幅が狭くなるように突出形成された前方側扁平状膨出部７，後方側扁平状膨出部８及び左右両側の横側扁平状膨出部９，９を設けたことで、地震の揺れの大きさの程度により、前記球体１０は、それぞれ異なった動作をすることになる。このことにより、地震の発生により、むやみに扉２１の閉じ状態でロックすることなく、ある程度の大きさの揺れにおいてのみ、扉２１の閉じ状態のロックを行うことができる。そして、地震が生じるたびに、ごく僅かの揺れだけでむやみにロックされた扉２１の閉じ状態を解除する面倒な作業から開放されるものである。なお図１０（Ａ）は、後方側扁平状膨出部８を前方側扁平状膨出部７と同様の台形形状としたものである。また、図１０（Ｂ）は、前方側扁平状膨出部７を後方側扁平状膨出部８と同様の三角形状に形成したものである。 As described above, the front side flat bulging portion 7, the rear side flat bulging portion 8, and the like formed so as to gradually narrow from the four sides of the bottom surface portion 1 of the housing A toward the substantially central portion. By providing the lateral flat bulging portions 9 on both the left and right sides, the spheres 10 perform different operations depending on the magnitude of the earthquake shake. Thus, the closed state of the door 21 can be locked only by a certain amount of shaking without causing the door 21 to be locked in the closed state due to the occurrence of an earthquake. And whenever an earthquake occurs, it is released from the troublesome operation | work which cancels | releases the closed state of the door 21 locked as much as possible with only a slight shaking. In FIG. 10A, the rear side flat bulging portion 8 has a trapezoidal shape similar to the front side flat bulging portion 7. In FIG. 10B, the front side flat bulging portion 7 is formed in the same triangular shape as the rear side flat bulging portion 8.

次に、前述の球体１０は、金属により形成され適宜の質量を有している。その質量は、球体１０の初動作に影響するものである。よって、どの程度の規模の地震によって動作するかによって、球体１０の質量が決定されるものである。その球体１０は、真球精度が高いものが、正確な動作を行う上で重要である。また、球体１０の直径は、前記筺体Ａの左右方向（幅方向）の寸法の略半分程度となっており、前記筺体Ａの底面部１を転動して適宜の距離を移動することができるものである。 Next, the above-mentioned sphere 10 is made of metal and has an appropriate mass. The mass affects the initial operation of the sphere 10. Therefore, the mass of the sphere 10 is determined depending on the magnitude of the earthquake. The sphere 10 having a high true sphere accuracy is important for accurate operation. Moreover, the diameter of the spherical body 10 is about half of the dimension in the left-right direction (width direction) of the housing A, and the bottom surface portion 1 of the housing A can be rolled to move an appropriate distance. Is.

次に、揺動フック部材Ｂは、感知部１１とフックレバー部１２とから構成される。その感知部１１は、図１（Ｂ），図４（Ａ）等に示すように、外周側より略中央箇所に向かって扁平状に凹む受面１１ａを下面側に有している。さらに、前記感知部１１から外方に突出するフックレバー部１２が形成されている。該フックレバー部１２は、フック片１２ａとレバー部１２ｂとから構成され、該レバー部１２ｂの先端すなわち端部箇所にフック片１２ａが形成されている。該フック片１２ａは、鉤形状をなしており、後述する被係止部材１６のループ状部１６ａに引掛かり易い形状となっている。前記レバー部１２ｂは、前記感知部１１との付け根箇所から外方に向かって一旦、上方に少し傾斜し、その上端箇所から略水平状に外方に延びるようにして形成されている。このように、感知部１１とフックレバー部１２とは一体的に形成された剛性体である。 Next, the swing hook member B includes a sensing unit 11 and a hook lever unit 12. As shown in FIG. 1B, FIG. 4A, etc., the sensing unit 11 has a receiving surface 11a that is recessed in a flat shape from the outer peripheral side toward a substantially central portion on the lower surface side. Further, a hook lever portion 12 that protrudes outward from the sensing portion 11 is formed. The hook lever portion 12 is composed of a hook piece 12a and a lever portion 12b, and the hook piece 12a is formed at the tip, that is, the end portion of the lever portion 12b. The hook piece 12a has a hook shape and is easily hooked to a loop-shaped portion 16a of the locked member 16 described later. The lever portion 12b is formed so as to incline slightly upward from the base portion with the sensing portion 11 to the outside and extend outward from the upper end portion in a substantially horizontal shape. Thus, the sensing part 11 and the hook lever part 12 are integrally formed rigid bodies.

また、感知部１１とフックレバー部１２との境目箇所には、図１（Ａ），（Ｂ）に示すように、枢支突起部１３，１３が形成されている。該枢支突起部１３が前記筺体Ａの軸受溝４ａに装着されて、揺動フック部材Ｂが筺体Ａに対して揺動自在に装着されるものである。具体的には、前記感知部１１の前端箇所の幅方向両端に枢支突起部１３，１３が形成されたものである。その感知部１１は、前記筺体Ａの開口部の形状に等しく、感知部１１の外周囲と筺体Ａの内周との間に適宜の隙間が生じるようにして装着される。 Further, as shown in FIGS. 1A and 1B, pivot protrusions 13 and 13 are formed at the boundary between the sensing unit 11 and the hook lever unit 12. The pivot projection 13 is mounted in the bearing groove 4a of the housing A, and the swing hook member B is swingably mounted on the housing A. Specifically, pivot support protrusions 13 and 13 are formed at both ends in the width direction of the front end portion of the sensing unit 11. The sensing unit 11 is mounted in such a manner that an appropriate gap is formed between the outer periphery of the sensing unit 11 and the inner periphery of the housing A, which has the same shape as the opening of the housing A.

また、フックレバー部１２は、前記筺体Ａの前方側部２に形成された切除部２ａから筺体Ａの外方に突出するように配置されている。そして、フックレバー部１２は、前記切除部２ａ箇所を上下方向に揺動することができるようになっている〔図４（Ｂ），（Ｃ）参照〕。すなわち、筺体Ａの内部には感知部１１が配置され、筺体Ａの外部にフックレバー部１２が位置するものである。その揺動フック部材Ｂと筺体Ａとの装着構造は、前述したように、枢支突起部１３，１３が筺体Ａの軸受溝４ａ，４ａに配置され、前記枢支突起部１３，１３が円弧状終端部４ａ₁，４ａ₁に回動自在に支持されるものである。 Further, the hook lever portion 12 is disposed so as to protrude outward from the cutout portion 2a formed in the front side portion 2 of the housing A. And the hook lever part 12 can rock | fluctuate the said cutting part 2a location up and down [refer FIG. 4 (B), (C)]. That is, the sensing unit 11 is disposed inside the housing A, and the hook lever portion 12 is located outside the housing A. As described above, the mounting structure of the swinging hook member B and the casing A is such that the pivot protrusions 13 and 13 are disposed in the bearing grooves 4a and 4a of the casing A, and the pivot protrusions 13 and 13 are circular. The arcuate end portions 4a ₁ and 4a ₁ are rotatably supported.

前記感知部１１の受面１１ａは、筺体Ａの底面部１に配置された球体１０と当接するようにして配置される。そして、前記球体１０が底面部１の静止位置Ｐに位置し、前記感知部１１の受面１１ａと球体１０が当接した状態で、感知部１１及びフックレバー部１２が水平状態になっている。この水平状態とは揺動フック部材Ｂが後述する被係止部材１６と係止しない状態である。 The receiving surface 11a of the sensing unit 11 is disposed so as to contact the sphere 10 disposed on the bottom surface 1 of the casing A. The sensing part 11 and the hook lever part 12 are in a horizontal state in a state where the spherical body 10 is positioned at the stationary position P of the bottom surface part 1 and the receiving surface 11a of the sensing part 11 is in contact with the spherical body 10. . This horizontal state is a state in which the swing hook member B is not locked with the locked member 16 described later.

また、前記感知部１１の質量Ｍ₁は、前記フックレバー部１２の質量Ｍ₂よりも大きく形成されている〔図１（Ｃ）参照〕。すなわち、Ｍ₁＞Ｍ₂である。そして、揺動フック部材Ｂを筺体Ａに装着したときには、前記枢支突起部１３を介して、揺動フック部材Ｂが揺動自在となるが、このとき感知部１１は自然状態では、質量Ｍ₁による自重により常時下方に付勢され、またその反対にあフックレバー部１２は上方に付勢されるものである。そして、地震発生時の揺れ，衝撃によりフックレバー部１２が一旦，下方に下がっても、地震の終了とともに前記感知部１１の質量Ｍ₁によって、フックレバー部１２は元の位置に戻る。 Further, the mass M ₁ of the sensing part 11 is formed larger than the mass M ₂ of the hook lever part 12 (see FIG. 1C). That is, M ₁ > M ₂ . When the swinging hook member B is attached to the housing A, the swinging hook member B is swingable via the pivot protrusion 13. At this time, the sensing unit 11 is in a natural state and has a mass M. _On the contrary, the hook lever portion 12 is urged upward by its own weight. And even if the hook lever part 12 once falls downward due to the shaking and impact at the time of the occurrence of the earthquake, the hook lever part 12 returns to the original position by the mass M ₁ of the sensing part 11 at the end of the earthquake.

その感知部１１の質量Ｍ₁がフックレバー部１２の質量Ｍ₂よりも大きくするための手段として、たとえば、感知部１１を肉厚材としたり、又はフックレバー部１２に多数の小貫通孔を形成し、その重量を軽減することがある。その感知部１１は、後述するように筺体Ａ内の球体１０の転動による移動にて動作するものであり、感知部１１の質量Ｍ₁は、この点も考慮されて質量Ｍ₁が決定されるものである。 As a means for making the mass M ₁ of the sensing portion 11 larger than the mass M ₂ of the hook lever portion 12, for example, the sensing portion 11 is made of a thick material, or many small through holes are provided in the hook lever portion 12. May form and reduce its weight. Its sensing unit 11, which operates by the movement by rolling of the sphere 10 within the enclosure A as described below, the mass M ₁ of the sensing unit 11, the mass M ₁ is considered This point is determined Is.

次に、キャップ材１５は、図４（Ａ）に示すように、前記筺体Ａの開口部を閉じる役目をなすものであり、前記球体１０及び揺動フック部材Ｂが筺体Ａから飛び出さないようにする。そのキャップ材１５は、略平板状をなしており、筺体Ａの開口部の形状に略等しい形状である。そして、キャップ材１５の外周箇所が筺体Ａの内周に略当接するようにして、接着剤等により固着される。このキャップ材１５には、図１（Ａ）に示すように、前記筺体Ａの軸受溝４ａ，４ａに挿入する軸押え突起１５ａ，１５ａが形成されている。 Next, as shown in FIG. 4A, the cap material 15 serves to close the opening of the housing A so that the spherical body 10 and the swing hook member B do not jump out of the housing A. To. The cap material 15 has a substantially flat plate shape and is substantially equal to the shape of the opening of the housing A. Then, the cap member 15 is fixed by an adhesive or the like so that the outer peripheral portion of the cap member 15 substantially contacts the inner periphery of the casing A. As shown in FIG. 1A, shaft cap protrusions 15a and 15a to be inserted into the bearing grooves 4a and 4a of the housing A are formed on the cap material 15.

該軸押え突起１５ａ，１５ａは、図４（Ａ）に示すように、前記軸受溝４ａ，４ａに支持された揺動フック部材Ｂの枢支突起部１３，１３の上方箇所を押さえて、枢支突起部１３，１３が安定した状態で回動することができるようにしている。また、その軸押え突起１５ａ，１５ａにより、キャップ材１５を筺体Ａに装着しやすいようにする役目もなしている。その被係止部材１６は、図１１（Ｂ）に示すように、ループ状部１６ａと取付固定部１６ｂとから構成されている。この被係止部材１６は、金属材から形成されているが、強度に優れたものであるならば、合成樹脂製でも構わない。前記取付固定部１６ｂは、扉２１にビス等の固着具を介して固着される部位である。また、前記ループ状部１６ａは、前記揺動フック部材Ｂのフック片１２ａが係止することができる部位である〔図１２（Ａ），（Ｂ）参照〕。 As shown in FIG. 4 (A), the shaft pressing protrusions 15a and 15a hold the upper portions of the pivoting protrusions 13 and 13 of the swinging hook member B supported by the bearing grooves 4a and 4a to pivot. The support protrusions 13 and 13 can be rotated in a stable state. The shaft pressing protrusions 15a and 15a also serve to make it easy to attach the cap material 15 to the housing A. The to-be-latched member 16 is comprised from the loop-shaped part 16a and the attachment fixing | fixed part 16b, as shown to FIG. 11 (B). The locked member 16 is made of a metal material, but may be made of synthetic resin as long as it has excellent strength. The attachment fixing portion 16b is a portion that is fixed to the door 21 via a fixing tool such as a screw. The loop portion 16a is a portion where the hook piece 12a of the swinging hook member B can be locked (see FIGS. 12A and 12B).

以上の構成により、地震発生時には、前記筺体Ａ内で前記球体１０が静止位置Ｐから転動して、底面部１の外周箇所に移動する。この球体１０の移動によって、該球体１０は、前記揺動フック部材Ｂの受面１１ａの最も浅い位置に当接しながら移動する。そして前記球体１０の受面１１ａを下方より押し上げるようにして作用し、よって感知部１１が押し上げられ、該感知部１１が上方に移動することで、反対に前記フックレバー部１２が下がり、そのフック片１２ａが被係止部材１６に係止するものである〔図１２（Ａ），（Ｂ）参照〕。 With the above configuration, when an earthquake occurs, the sphere 10 rolls from the stationary position P in the housing A and moves to the outer peripheral portion of the bottom surface portion 1. By the movement of the sphere 10, the sphere 10 moves while contacting the shallowest position of the receiving surface 11 a of the swing hook member B. Then, the receiving surface 11a of the sphere 10 acts so as to push up from below, so that the sensing portion 11 is pushed up and the sensing portion 11 moves upward, so that the hook lever portion 12 is lowered, and the hook The piece 12a is locked to the locked member 16 (see FIGS. 12A and 12B).

本発明の耐震ラッチを家具本体２０に装着するには、図１１（Ａ）に示すように、家具本体２０の開口部上端箇所に前記筺体Ａが装着される。また、扉２１には、被係止部材１６が固着される。耐震ラッチと被係止部材１６との位置関係は、図１２（Ａ）に示すように、耐震ラッチが自然状態（地震が発生していない状態）のときにループ状部１６ａは、耐震ラッチの揺動フック部材Ｂのフック片１２ａより少し下方に位置している。そして、地震発生時に揺動フック部材Ｂが揺動して、フックレバー部１２が下降し、フック片１２ａが被係止部材１６のループ状部１６ａに係止することにより、扉２１が閉じた状態でロックされるものである。 In order to attach the seismic latch of the present invention to the furniture body 20, the casing A is attached to the upper end portion of the opening of the furniture body 20, as shown in FIG. Further, the locked member 16 is fixed to the door 21. As shown in FIG. 12A, the positional relationship between the seismic latch and the locked member 16 is such that when the seismic latch is in a natural state (a state where no earthquake has occurred), the loop portion 16a The swing hook member B is positioned slightly below the hook piece 12a. Then, when the earthquake occurs, the swinging hook member B swings, the hook lever portion 12 descends, and the hook piece 12a is locked to the loop-shaped portion 16a of the locked member 16, whereby the door 21 is closed. It is locked in the state.

その地震発生時では、前記揺動フック部材Ｂのフックレバー部１２が下方に下がり、フック片１２ａが被係止部材１６に係止されて、扉２１が開かないようにロックされるものである。また、地震が終了すると、前記球体１０は、前記底面部１の低位置Ｐ箇所に移動して、ロック状態が解除されるものである。 When the earthquake occurs, the hook lever portion 12 of the swing hook member B is lowered downward, the hook piece 12a is locked to the locked member 16, and the door 21 is locked so as not to open. . When the earthquake ends, the sphere 10 moves to the lower position P of the bottom surface portion 1 and the locked state is released.

本発明の耐震ラッチは、上述したように、地震の発生により前記球体１０が底面部１の静止位置Ｐから転動して移動し、揺動フック部材Ｂの感知部１１を上方に押し上げるように作用して、家具本体２０の扉２１を閉じた位置でロック状態にするものである。底面部１には、前方側扁平状膨出部７，後方側扁平状膨出部８及び両横側扁平状膨出部９，９が形成されており、これらの扁平状膨出部は、底面部１の各４辺より略中央箇所に向かって次第に幅が狭くなるように突出形成されたものである。そのために、地震の発生による衝撃が小さい場合には、前記球体１０が底面部１の静止位置Ｐから転動して移動するが、球体１０の勢いも弱いので扁平状膨出部に当接すると、これを載りきることができず、静止位置Ｐに戻る。これによって、極めて小さい地震では、ごく僅かの揺れだけでむやみに扉２１を閉じ状態でロックしないようにすることができる。 As described above, the earthquake-resistant latch of the present invention is configured so that the sphere 10 rolls and moves from the stationary position P of the bottom surface portion 1 due to the occurrence of an earthquake, and pushes up the sensing portion 11 of the swing hook member B upward. It acts to lock the door 21 of the furniture body 20 at the closed position. The bottom surface portion 1 is formed with a front side flat bulging portion 7, a rear side flat bulging portion 8, and both lateral flat bulging portions 9, 9, and these flat bulging portions are The bottom surface portion 1 is formed so as to protrude gradually from the four sides toward the substantially central portion. For this reason, when the impact due to the occurrence of the earthquake is small, the sphere 10 rolls and moves from the stationary position P of the bottom surface portion 1, but the momentum of the sphere 10 is weak so that it comes into contact with the flat bulge portion. It is impossible to mount this, and it returns to the stationary position P. As a result, in an extremely small earthquake, the door 21 can be prevented from being locked in a closed state with only a slight shaking.

次に、小さい地震であるが、その揺れで扉２１が開いてしまうような程度の場合には、球体１０は、底面部１の静止位置Ｐから転動して移動するが、球体１０には各扁平状膨出部を載りきる勢いが不足している。しかし、上記の地震のときよりは、球体１０に多少の勢いがあるので、それぞれの隣接する扁平状膨出部間の通路状部分、例えば前方側扁平状膨出部７と横側扁平状膨出部９との間に形成される底面部１のみの通路状態とした球体通路１ａに球体１０が案内されて移動し、これによって、球体１０は感知部１１を上方に押し上げることができ、揺動フック部材Ｂのフック片１２ａが被係止部材１６に係止することができるものである。 Next, in the case of a small earthquake that causes the door 21 to open due to the shaking, the sphere 10 rolls and moves from the stationary position P of the bottom surface portion 1. The momentum to mount each flat bulge is insufficient. However, since the sphere 10 is somewhat more vigorous than in the case of the earthquake described above, a passage-like portion between adjacent flat bulges, for example, the front flat bulge 7 and the lateral flat bulge The sphere 10 is guided and moved to the sphere passage 1a formed only between the bottom surface portion 1 and the protruding portion 9, so that the sphere 10 can push the sensing portion 11 upward, The hook piece 12 a of the moving hook member B can be locked to the locked member 16.

また、揺動フック部材Ｂの感知部１１を押し上げて扉２１のロックした状態にて地震が終了すると、前記球体１０が隣接する扁平状膨出部間に形成された球体通路１ａを静止位置Ｐに向かって戻り、感知部１１が下がり、フックレバー部１２が上昇して被係止部材１６からフック片１２ａが外れ、扉２１の閉じ状態のロックを解除することができる。このとき隣接する扁平状膨出部同士の間に形成された底面部１のみの球体通路１ａは、前記底面部１は外周側より略中央箇所に向かって略扁平状に凹むすり鉢形状としていることにより、球体１０は円滑に静止位置Ｐに戻ることができる。 In addition, when the earthquake ends with the detection unit 11 of the swinging hook member B being pushed up and the door 21 is locked, the spherical passage 1a formed between the flat bulging portions adjacent to the spherical body 10 is moved to a stationary position P. , The sensing portion 11 is lowered, the hook lever portion 12 is raised, the hook piece 12a is detached from the locked member 16, and the door 21 can be unlocked. At this time, the spherical passage 1a having only the bottom surface portion 1 formed between the adjacent flat bulging portions has a mortar shape in which the bottom surface portion 1 is recessed in a substantially flat shape from the outer peripheral side toward the substantially central portion. Thus, the sphere 10 can return to the stationary position P smoothly.

次に、大きな地震の場合には、静止位置Ｐから球体１０が勢いを得て、各扁平状膨出部を直接載りきって、感知部１１を上方に押し上げ、揺動フック部材Ｂのフック片１２ａが被係止部材１６に係止することができる。特に、この大きな地震では、球体１０が前方側扁平状膨出部７或いは後方側扁平状膨出部８に直接、載り上げるので、球体１０の上方への移動も急激となり、略瞬時に揺動フック部材Ｂのフック片１２ａを被係止部材１６のループ状部１６ａに係止させることができ、ロックの確実性を向上させることができる。 Next, in the case of a large earthquake, the sphere 10 gains momentum from the stationary position P, directly places each flat bulge, pushes up the sensor 11 upward, and the hook piece of the swing hook member B 12 a can be locked to the locked member 16. In particular, in this large earthquake, the sphere 10 is directly mounted on the front flat bulging portion 7 or the rear flat bulging portion 8, so that the upward movement of the sphere 10 also becomes abrupt and swings almost instantaneously. The hook piece 12a of the hook member B can be locked to the loop-shaped portion 16a of the locked member 16, and the locking reliability can be improved.

また、前記後方側扁平状膨出部８は略三角形状に形成されることにより、地震発生時に前記球体１０が後方側扁平状膨出部８に移動した場合に、球体１０は移動コースを後方側扁平状膨出部８の右側又は左側へのコース移動が行われやすく、球体１０の動作を機敏にすることができる。また、前記前方側扁平状膨出部７は、底面部１の中心側に対向する小立上り面７ａを有し、且つ該小立上り面７ａは、中央より底面部１の幅方向両側に向かって筺体Ａの前方側に傾斜することにより、特に球体１０の転動の勢いが小さいときにはこれを跳ね返してむやみに扉２１の閉じ状態にロックがかからないようにすることができるものである。 In addition, the rear flat bulging portion 8 is formed in a substantially triangular shape, so that when the sphere 10 moves to the rear flat bulging portion 8 when an earthquake occurs, the sphere 10 moves backward along the course of movement. The course movement to the right side or the left side of the side flat bulging portion 8 is easily performed, and the operation of the sphere 10 can be made agile. The front flat bulged portion 7 has a small rising surface 7a facing the center side of the bottom surface portion 1, and the small rising surface 7a is directed from the center toward both sides in the width direction of the bottom surface portion 1. By tilting toward the front side of the casing A, when the momentum of rolling of the spherical body 10 is small, it can be rebounded to prevent the door 21 from being locked in the closed state.

なお、本発明の耐震ラッチは、水平方向に揺動する家具扉を備えた家具に使用されるものであるが、必要に応じて垂直方向に揺動する扉を備えた家具に使用することも可能である。さらに、引出しタイプの家具に使用することもできる。 In addition, although the earthquake-resistant latch of this invention is used for the furniture provided with the furniture door swinging horizontally, it can also be used for the furniture provided with the door swinging vertically. Is possible. Furthermore, it can also be used for drawer-type furniture.

（Ａ）は本発明の分解斜視図、（Ｂ）は揺動フック部材を下方より見た斜視図、（Ｃ）は（Ｂ）のＸ₁−Ｘ₁矢視断面図、（Ｄ）は本発明の斜視図である。(A) is an exploded perspective view of the present invention, (B) is a perspective view of a swinging hook member as viewed from below, (C) is a cross-sectional view taken along the line X ₁ -X ₁ of (B), and (D) is a book It is a perspective view of invention. （Ａ）は筺体の平面図、（Ｂ）は筺体の縦断側面図、（Ｃ）は筺体の縦断背面図である。(A) is a top view of a housing, (B) is a longitudinal side view of a housing, (C) is a longitudinal rear view of a housing. （Ａ）は底面部の拡大斜視図、（Ｂ）は（Ａ）のＸ₂−Ｘ₂矢視断面図、（Ｃ）は（Ａ）のＸ₃−Ｘ₃矢視断面図である。(A) is an enlarged perspective view of the bottom portion, (B) is a cross-sectional view taken along the line X ₂ -X ₂ of (A), and (C) is a cross-sectional view taken along the line X ₃ -X ₃ of (A). （Ａ）は本発明の自然状態の縦断側面図、（Ｂ）は球体が後方側部に移動した状態の縦断側面図、（Ｃ）は球体が前方側部に移動した状態の縦断側面図である。(A) is a vertical side view in the natural state of the present invention, (B) is a vertical side view in a state where the sphere has moved to the rear side, and (C) is a vertical side view in a state in which the sphere has moved to the front side. is there. （Ａ）は前方側扁平状膨出部側における球体の移動状態の平面図、（Ｂ）は後方側扁平状膨出部側における球体の移動状態の平面図である。(A) is a top view of the movement state of the sphere in the front side flat bulge part side, (B) is a top view of the movement state of the sphere in the back side flat bulge part side. （Ａ）は前方側扁平状膨出部における球体の作用状態の拡大平面図、（Ｂ）は（Ａ）のＸ₄−Ｘ₄矢視断面図である。(A) is an enlarged plan view of the action state of the sphere in the front flat bulged portion, and (B) is a cross-sectional view taken along the line X ₄ -X _{4 in} (A). （Ａ）は後方側扁平状膨出部における球体の作用状態の拡大平面図、（Ｂ）は（Ａ）のＸ₅−Ｘ₅矢視断面図である。(A) is an enlarged plan view of the action state of the sphere in the rear-side flat bulged portion, and (B) is a cross-sectional view taken along arrow X ₅ -X _{5 in} (A). （Ａ）は通常の地震発生時の球体の前後方向における移動状態を示す作用図、（Ｂ）は通常の地震発生時の球体の左右方向における移動状態を示す作用図である。(A) is an action figure which shows the movement state in the front-back direction of the sphere at the time of normal earthquake occurrence, (B) is an action figure which shows the movement state in the left-right direction of the sphere at the time of normal earthquake occurrence. （Ａ）は球体の静止状態の縦断正面図，（Ｂ）は地震発生時の球体の移動状態を示す縦断正面図である。(A) is a longitudinal front view of a sphere in a stationary state, and (B) is a longitudinal front view showing a movement state of the sphere when an earthquake occurs. （Ａ）は前方側扁平状膨出部及び後方側扁平状膨出部を略台形状とした平面図、（Ｂ）は前方側扁平状膨出部及び後方側扁平状膨出部を三角形状とした平面図である。(A) is a plan view in which the front flat bulge and the rear flat bulge are substantially trapezoidal, and (B) is a triangle of the front flat bulge and the rear flat bulge. FIG. （Ａ）は本発明を家具に装着した斜視図、（Ｂ）は扉に装着した被係止部材の斜視図である。(A) is the perspective view which mounted | wore the furniture with this invention, (B) is the perspective view of the to-be-latched member with which the door was mounted | worn. （Ａ）は本発明を家具本体に装着した状態の要部拡大断面図、（Ｂ）は（Ａ）において地震発生時に扉を閉じ状態でロックした状態の要部拡大断面図である。(A) is a principal part expanded sectional view of the state which mounted | wore the furniture main body with this invention, (B) is a principal part expanded sectional view of the state which locked in the closed state at the time of the earthquake occurrence in (A).

Explanation of symbols

Ａ…筺体、Ｂ…揺動フック部材、１…底面部、７…前方側扁平状膨出部、
８…後方側扁平状膨出部、９…横側扁平状膨出部、１０…球体、
１１…感知部、１１ａ…受面、１２…フックレバー部、１２ａ…フック片。 A ... Housing, B ... Oscillating hook member, 1 ... bottom surface, 7 ... front side flat bulge,
8 ... Back side flat bulging part, 9 ... Lateral flat bulging part, 10 ... Sphere,
DESCRIPTION OF SYMBOLS 11 ... Sensing part, 11a ... Reception surface, 12 ... Hook lever part, 12a ... Hook piece.

Claims

The housing having a flat bulging portion formed so as to protrude gradually from the four sides on the bottom surface of the rectangular shape toward the substantially central portion is movable on the bottom surface and is generally at the center. A stationary sphere is housed and disposed at a location, and a swinging hook member formed of a sensing portion and a hook lever portion is swingably attached to the housing, and the stationary sphere due to an earthquake shock is A seismic latch characterized in that it moves from the central part of the part toward the outer periphery and the sensing part swings within the housing.

A square bottom surface, and a front flat bulging portion, a rear flat bulging portion, and left and right protrusions formed on the bottom surface so as to gradually narrow from the four sides toward a substantially central portion. A housing having lateral flat bulging portions on both sides, a sphere that is rotatably housed in the housing and is normally stationary at a substantially central portion of the bottom surface portion, and toward a substantially central portion from the outer peripheral side It has a receiving surface that is recessed in a flat shape on the lower surface side, and includes a sensing portion that can swing freely in the housing, and a hook lever portion that protrudes outward from the sensing portion and has a hook piece formed at the tip thereof. The sensing part is formed with a mass larger than that of the hook lever part, and is attached to the front part of the housing around the boundary part between the sensing part and the hook lever part. Seismic latch characterized by

3. The earthquake-resistant latch according to claim 1, wherein the bottom surface portion has a shape that is recessed in a substantially flat shape from the outer peripheral side toward a substantially central portion.

4. The earthquake-resistant latch according to claim 2, wherein the front side flat bulging portion and the rear side flat bulging portion are formed higher than the both lateral flat bulging portions.

5. The earthquake-resistant latch according to claim 2, 3 or 4, wherein the rear flat bulged portion is formed in a substantially triangular shape, and an outer peripheral portion thereof is formed as an inclined surface.

6. The front flat bulged portion according to claim 2, having a small rising surface facing a central portion of the bottom surface portion, and the small rising surface is a width direction of the bottom surface portion from the center. An earthquake-resistant latch that is inclined toward the front side of the chassis toward both sides.