JP6524550B2 - Rescue jack - Google Patents

Rescue jack Download PDF

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JP6524550B2
JP6524550B2 JP2015080850A JP2015080850A JP6524550B2 JP 6524550 B2 JP6524550 B2 JP 6524550B2 JP 2015080850 A JP2015080850 A JP 2015080850A JP 2015080850 A JP2015080850 A JP 2015080850A JP 6524550 B2 JP6524550 B2 JP 6524550B2
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longitudinal direction
slide plate
worm gear
link
holding bar
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JP2016199362A (en
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修司 佐々木
修司 佐々木
証英 原田
証英 原田
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Harada Electronics Industry Co Ltd
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Description

この発明は、地面や建物の床面等と倒壊物等との間あるいは倒壊物同士の間等の高重量あるいは強固な物体の間に挟まれた人を救助するための救助用ジャッキに関し、特には、狭い隙間でも容易に挿入し得る救助用ジャッキに関するものである。   The present invention relates to a rescue jack for relieving a person who is caught between heavy objects or strong objects such as between the ground or a floor of a building and the collapse or the like, or between collapses, and the like. Relates to a rescue jack that can be easily inserted even in narrow gaps.

従来の人手で操作し得るジャッキとしては、例えば特許文献1記載のものが知られており、このジャッキは、台座の上方に配置したフランジの昇降を、台座上に立設した案内筒とフランジの下面に突設されて案内筒内に摺動自在に嵌挿された摺動軸とで案内するとともに、平行リンクを上下2段に配置してフランジと台座とを繋ぐトグル機構を構成し、下段の平行リンクをレバーで揺動させてフランジを昇降させるとともに、上死点を僅かに通過した位置でのレバーと台座との当接によりフランジの下降を止めるようにしている。また、フランジに貫通螺合させたネジ軸で支台を高さ変更可能に支持し、加力対象である例えば車体等と床面との隙間に高さを合わせてジャッキを挿入できるようにしている。   For example, a jack described in Patent Document 1 is known as a conventional manual-operated jack, and this jack is a guide cylinder and a flange which is provided on a pedestal by raising and lowering a flange disposed above the pedestal. A toggle mechanism is configured to project on the lower surface and guide it with a sliding shaft slidably inserted in the guide cylinder, and arrange parallel links in two upper and lower stages to connect the flange and the base, The parallel link is rocked by the lever to raise and lower the flange, and the lowering of the flange is stopped by the abutment of the lever and the base at a position slightly passing the top dead center. In addition, the support is supported in a height-changeable manner by a screw shaft threaded through a flange so that the jack can be inserted by adjusting the height to the gap between the vehicle body and the floor, which is the subject of application, for example. There is.

実開昭61−113793号公報Japanese Utility Model Publication No. 61-113793

しかしながら、このような構成のジャッキを災害現場等で使用して、加力対象である地面や建物の床面等と倒壊物等との間あるいは倒壊物同士の間等の高重量あるいは強固な物体の間に挿入し、そこに挟まれた人を救助しようとする際に、ジャッキを挿入する加力対象間の隙間が小さすぎてジャッキを挿入することができず、ジャッキを使用できない場合があるという問題があった。   However, a jack with such a configuration is used at a disaster site or the like, and a high weight or strong object such as between the ground, a floor surface of a building, etc. and collapsing objects, etc. When trying to rescue a person who was inserted in between and there, the gap between the objects to which the jack is inserted is too small to insert the jack and the jack may not be used There was a problem that.

この発明は、上述の点に鑑みて従来のジャッキの課題を有利に解決するものであり、この発明の救助用ジャッキは、
保持棒と、
前記保持棒の先端部に配置されるとともに互いに接した閉状態で外向きの支持面が楔状をなす二つの開閉部材と、
前記保持棒の先端部に基端部を固定されて各々その保持棒の長手方向へ延在するとともにその保持棒の長手方向と交差する方向に互いに離間して位置する二枚のガイド板と、
前記二枚のガイド板の先端部間に基端部を固定されてそのガイド板の先端部から前記保持棒の長手方向へ突出するリンク支持部材と、
前記二枚のガイド板に各々対向して位置するとともに互いに一体に結合され、前記二枚のガイド板により前記保持棒の長手方向への進退移動を案内される二枚のスライド板と、
前記各スライド板の基端部近傍に設けられ、前記保持棒の長手方向と交差する方向に互いに離間して位置する二つの基端部側枢支部と、
前記各スライド板の先端部近傍に設けられ、前記保持棒の長手方向と交差する方向に互いに離間して位置する二つの先端部側枢支部と、
前記二枚のスライド板の各々の前記基端部側枢支部によって基端部を揺動可能に支持されるとともに前記各開閉部材の基端部に先端部を揺動可能に連結されて、互いに同一の前記開閉部材に連結された二本で対をなす四本の第1リンク部材と、
前記二枚のスライド板の各々の前記先端部側枢支部によって基端部を揺動可能に枢支されるとともに前記各開閉部材の長手方向中間部に先端部を揺動可能に連結されて、互いに同一の前記開閉部材に連結された二本で対をなすとともに、互いに同一の前記開閉部材に連結された前記対をなす第1リンク部材と一緒に四節リンク機構の一部を構成する四本の第2リンク部材と、
前記各第2リンク部材の長手方向中間部と前記リンク支持部材とを連結し、前記スライド板の前進移動に伴い各第2リンク部材を前記保持棒の長手方向と概略平行な当初位置から前記保持棒の長手方向と交差する起き上がり位置へ揺動させる四本の第3リンク部材と、
前記二枚のスライド板を前記保持棒の長手方向へ進退移動させるスライド板駆動手段と、
を具え、
前記第1リンク部材と前記第2リンク部材と前記開閉部材と前記スライド板とで構成される四節リンク機構が、前記保持棒の長手方向と概略平行な当初位置から前記保持棒の長手方向と交差する起き上がり位置への前記第2リンク部材の揺動に伴って、前記二つの開閉部材の前記外向きの支持面を、前記楔状の状態から互いに平行な状態に移行させるものであることを特徴としている。
The present invention advantageously solves the problems of the conventional jack in view of the above-mentioned points, and the rescue jack of the present invention is
With a holding bar,
The two open / close members disposed at the tip of the holding rod and in contact with each other and in a closed state and in which the outwardly facing support surfaces are bowl-shaped;
Two guide plates fixed at their distal ends to the holding bar and extending in the longitudinal direction of the holding bar and spaced apart from each other in a direction intersecting the longitudinal direction of the holding bar;
A link support member fixed at its proximal end between the distal ends of the two guide plates and projecting from the distal end of the guide plate in the longitudinal direction of the holding bar;
Two slide plates which are respectively positioned opposite to the two guide plates and integrally coupled to each other and which are guided by the two guide plates to move forward and backward in the longitudinal direction of the holding rod;
Two proximal end side pivoting portions provided in the vicinity of the proximal end portion of each slide plate and spaced apart from each other in a direction intersecting the longitudinal direction of the holding bar;
Two tip portion side pivoting portions provided in the vicinity of the tip portion of each slide plate and spaced apart from each other in the direction intersecting the longitudinal direction of the holding bar;
The proximal end is pivotally supported by the proximal end side pivoting portion of each of the two slide plates, and the distal end is pivotally connected to the proximal end of each of the opening and closing members. Two pairs of four first link members connected to the same opening / closing member;
The proximal end is pivotably supported by the distal end side pivoting portion of each of the two slide plates, and the distal end is pivotally connected to a longitudinal intermediate portion of each opening / closing member, A pair forming a part of a four-bar linkage together with a pair of first link members connected to the same opening and closing member while forming a pair with the two opening and closing members connected to each other A second link member of the book,
A longitudinal middle portion of each second link member and the link support member are connected, and each second link member is held from an initial position substantially parallel to the longitudinal direction of the holding bar as the slide plate is moved forward. Four third link members that are swung to a raised position that intersects the longitudinal direction of the rod;
Slide plate drive means for moving the two slide plates in the longitudinal direction of the holding bar;
Equipped
A four-bar link mechanism composed of the first link member, the second link member, the opening / closing member, and the slide plate has a longitudinal direction of the holding bar from an initial position substantially parallel to the longitudinal direction of the holding bar It is characterized in that, with the swinging of the second link member to the crossing rising position, the outward supporting surfaces of the two opening and closing members are shifted from the bowl-like state to a mutually parallel state. And

この発明の救助用ジャッキにあっては、保持棒を持って、保持棒の先端部に配置されて互いに接した閉状態で外向きの支持面が先細りの楔状をなしている二つの開閉部材を加力対象間の隙間に差し込み、スライド板駆動手段でスライド板を保持棒の長手方向へ前進移動させると、そのスライド板の前進移動に伴って、第2リンク部材が保持棒の長手方向と概略平行な当初位置から保持棒の長手方向と交差する起き上がり位置へ揺動するとともに、第1リンク部材も当初位置から保持棒の長手方向と交差する起き上がり位置へ揺動し、これと併せて、第1リンク部材と第2リンク部材と開閉部材とスライド板とで構成される四節リンク機構が、二つの開閉部材の外向きの支持面を当初の楔状の状態から互いに平行な状態に移行させて、加力対象からの反力で開閉部材が隙間から押し出されるのを防止する。   In the rescue jack according to the present invention, the two open / close members having holding rods and disposed at the tip of the holding rods and in contact with each other in a closed state and in which the outward supporting surface has a tapered bowl shape When the slide plate is moved forward in the longitudinal direction of the holding bar by the slide plate driving means, the second link member is substantially in the longitudinal direction of the holding bar with the forward movement of the slide plate. The first link member swings from the initial position to the rising position intersecting with the longitudinal direction of the holding rod, while swinging from the parallel initial position to the rising position intersecting with the longitudinal direction of the holding rod. A four-bar link mechanism composed of a link member, a second link member, an opening and closing member, and a slide plate causes the outward supporting surfaces of the two opening and closing members to shift from the initial hook-like state to a parallel state. , Subject to force Closing member is prevented from being extruded from the gap by the reaction force of et.

従って、この発明の救助用ジャッキによれば、加力対象である地面や建物の床面等と倒壊物等との間あるいは倒壊物同士の間等の高重量あるいは強固な物体の間の隙間が小さくても、その隙間に開閉部材を挿入して力を加えることで隙間を広げることができ、これにより隙間に挟まれた人を救助することができる。   Therefore, according to the jack for rescue of the present invention, a gap between a heavy object or a strong object such as between the ground, a floor surface of a building, etc. and collapsing objects, etc. or between collapsing objects, is used. Even if it is small, the gap can be expanded by inserting an opening and closing member into the gap and applying a force, and thereby, a person caught in the gap can be rescued.

なお、この発明の救助用ジャッキにおいては、前記基端部側枢支部は、
前記各ガイド板に形成され、そのガイド板の基部近傍で前記保持棒の長手方向と交差する方向に互いに離間して位置するとともにそのガイド板の先端部へ向かうにつれて互いに接近して前記保持棒の長手方向へ延在する二本のガイド長孔と、
前記各スライド板の基端部近傍に形成され、前記保持棒の長手方向と交差する方向に互いに離間するとともに整列して延在する二本の駆動長孔と、
前記ガイド長孔と前記駆動長孔とに挿通された揺動軸と、
によって構成されていると好ましい。このようにすれば、スライド板の前進移動に伴って、二対の第1リンク部材の基端部の揺動軸がガイド板のガイド長孔に沿って前方へ移動しつつスライド板の駆動長孔内で互いに、第2リンク部材の基端部の枢支部同士の距離と同程度まで接近移動して、互いに同一の開閉部材に連結された第1リンク部材の対と第2リンク部材の対とが当初の非平行四節リンク機構状態から実質的に平行四節リンク機構状態に移行することにより、第1リンク部材と第2リンク部材と開閉部材とスライド板とで構成される四節リンク機構が、二つの開閉部材の外向きの支持面を、互いに鋭角をなす傾斜状態から互いに平行な状態に移行させるので、ガイド長孔の形状設定によって任意の段階で二つの開閉部材の外向きの支持面を、互いに鋭角をなす傾斜状態から互いに平行な状態に移行させることができる。
In the jack for rescue of the present invention, the proximal end side pivot support portion
The guide bars are formed on the respective guide plates and are spaced apart from each other in a direction crossing the longitudinal direction of the holding bar near the base of the guide plate and closer to each other toward the leading end of the guide plate. Two longitudinally extending guide slots;
Two drive slots formed in the vicinity of the proximal end of each slide plate and extending in alignment with each other in a direction intersecting with the longitudinal direction of the holding bar.
An oscillating shaft inserted into the guide elongated hole and the driving elongated hole;
It is preferable that it is comprised by. In this way, with the forward movement of the slide plate, the swing axis of the proximal end of the two pairs of first link members moves forward along the guide elongated hole of the guide plate while the drive length of the slide plate The pair of the first link member and the second link member are mutually moved close to each other within the hole to the same extent as the distance between the pivoting portions of the proximal end of the second link member. A four-bar link composed of the first link member, the second link member, the opening / closing member, and the slide plate by shifting from the initial non-parallel four-bar linkage state to the substantially parallel four-bar linkage state. Since the mechanism shifts the outward supporting surfaces of the two opening and closing members from the inclined state forming an acute angle to the mutually parallel state, the outward setting of the two opening and closing members is performed at any stage by the shape setting of the guide slot. The support surfaces are inclined at an acute angle to each other It can be shifted et parallel with each other.

また、この発明の救助用ジャッキにおいては、前記スライド板駆動手段は、
前記保持棒内で前記保持棒の長手方向へ延在してその回転によりねじ機構を介して前記スライド板を進退移動させる駆動ロッドと、
前記駆動ロッドに駆動結合されたウォームホイールと、
前記ウォームホイールと噛合するウォームギヤと、
前記ウォームギヤを回転させるハンドルと、
を有していると好ましい。このようにすれば、スライド板駆動手段をコンパクトに構成して救助用ジャッキの持ち運びを容易なものとすることができるとともに、ウォームギヤとウォームホイールとでハンドルのトルクを増大させて駆動ロッドを回転させ、ねじ機構を介してスライド板を大きな力で前進移動させることができる。
Further, in the jack for rescue of the present invention, the slide plate drive means is
A driving rod which extends in the longitudinal direction of the holding rod in the holding rod and which rotates the slide plate via a screw mechanism by rotation thereof;
A worm wheel drive coupled to the drive rod;
A worm gear engaged with the worm wheel;
A handle for rotating the worm gear;
Is preferable. In this way, the slide plate drive means can be made compact to facilitate carrying of the rescue jack, and the torque of the handle is increased by the worm gear and the worm wheel to rotate the drive rod. The slide plate can be moved forward with a large force via a screw mechanism.

さらに、この発明の救助用ジャッキにおいては、前記ハンドルと前記ウォームギヤとの間に、前記スライド板の前進方向への前記ウォームギヤの回転時は前記ハンドルと前記ウォームギヤとを摩擦結合する一方それと逆方向への前記ウォームギヤの回転時は前記ハンドルと前記ウォームギヤとの間の摩擦結合を解放するワンウェイクラッチが設けられていると好ましい。このようにすれば、ハンドルの揺動を繰り返すだけでウォームギヤを回転させてスライド板を前進移動させることができるので、ハンドルの操作が簡単になる。   Furthermore, in the rescue jack of the present invention, when the worm gear rotates in the forward direction of the slide plate, the handle and the worm gear are frictionally coupled between the handle and the worm gear while the worm gear is in the opposite direction. Preferably, a one-way clutch is provided for releasing the frictional connection between the handle and the worm gear when the worm gear rotates. In this way, the slide gear can be moved forward by rotating the worm gear simply by repeating the swinging of the handle, so that the operation of the handle is simplified.

この発明の救助用ジャッキの一実施例の全体構成を示す斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the whole structure of one Example of the jack for rescue of this invention. 上記実施例の救助用ジャッキの保持棒の先端部に設けられた開閉部材を閉状態で示す斜視図である。It is a perspective view which shows the opening-closing member provided in the front-end | tip part of the holding bar of the jack of a rescue of the said Example in a closed state. 上記実施例の救助用ジャッキの保持棒の先端部に設けられた開閉部材を支持面同士が平行になった開状態で示す斜視図である。It is a perspective view showing the opening-and-closing member provided in the tip part of the maintenance stick of the jack for rescue of the above-mentioned example in the open state where support surfaces became parallel. 上記実施例の救助用ジャッキの保持棒の先端部に設けられた開閉部材を支持面同士が平行になるとともに図3に示すよりも間隔が開いた開状態で示す斜視図である。It is a perspective view which shows the opening / closing member provided in the front-end | tip part of the holding | maintenance stick | rod of the jack of a rescue of the said Example in the open state which space | interval opened more than shown in FIG. 上記実施例の救助用ジャッキの保持棒の先端部に設けられた開閉部材を支持面同士が平行になるとともに最も間隔が開いた全開状態で示す斜視図である。It is a perspective view showing the opening-and-closing member provided in the tip part of the maintenance stick of the jack for rescue of the above-mentioned example in the fully opened state where the support surfaces became parallel and the interval was opened most. 上記実施例の救助用ジャッキの保持棒の基部付近に設けられてスライド板駆動手段を構成するウォームギヤ機構を拡大して示す透視図である。FIG. 7 is an enlarged perspective view showing a worm gear mechanism provided near the base of the holding bar of the rescue jack of the above embodiment and constituting slide plate driving means. 上記ウォームギヤ機構とそこに組み合わされたツーウェイクラッチ機構とを簡略化して示す説明図である。It is explanatory drawing which simplifies and shows the said worm gear mechanism and the two-way clutch mechanism combined there.

以下、本発明の実施の形態を実施例によって、図面に基づき詳細に説明する。ここに、図1は、この発明の救助用ジャッキの一実施例の全体構成を示す斜視図であり、図2は、上記実施例の救助用ジャッキの保持棒の先端部に設けられた開閉部材を閉状態で示す斜視図であり、図3は、上記実施例の救助用ジャッキの保持棒の先端部に設けられた開閉部材を支持面同士が平行になった開状態で示す斜視図であり、図4は、上記実施例の救助用ジャッキの保持棒の先端部に設けられた開閉部材を支持面同士が平行になるとともに図3に示すよりも間隔が開いた開状態で示す斜視図であり、そして図5は、上記実施例の救助用ジャッキの保持棒の先端部に設けられた開閉部材を支持面同士が平行になるとともに最も間隔が開いた全開状態で示す斜視図である。   Hereinafter, embodiments of the present invention will be described in detail by way of examples based on the drawings. Here, FIG. 1 is a perspective view showing an entire configuration of an embodiment of the rescue jack according to the present invention, and FIG. 2 is an opening / closing member provided at the tip of the holding rod of the rescue jack according to the embodiment 3 is a perspective view showing an open / close member provided at the tip of the holding bar of the rescue jack of the above embodiment in an open state in which the support surfaces are parallel to each other. FIG. 4 is a perspective view showing the open / close member provided at the tip of the holding bar of the rescue jack of the above embodiment in the open state in which the support surfaces are parallel and the gap is more than shown in FIG. And FIG. 5 is a perspective view showing the open / close member provided at the tip of the holding bar of the rescue jack of the above embodiment in a fully open state in which the support surfaces are parallel to each other and the distance is the greatest.

この実施例の救助用ジャッキは、例えば金属パイプからなる保持棒1と、その保持棒1の先端部(図1では右方端部)に配置されるとともに互いに接した閉状態(図1,図2参照)で外向きの支持面2aが楔状をなす二つの開閉部材2と、保持棒1の先端部に固設されたブラケット3に基端部を固定されて各々その保持棒1の長手方向へ延在するとともにその保持棒1の長手方向と交差する方向に互いに離間して位置する二枚のガイド板4と、各ガイド板4に形成され、そのガイド板4の基部近傍で保持棒1の長手方向と交差する方向に互いに離間して位置するとともにそのガイド板4の先端部へ向かうにつれて互いに接近して全長の大部分で互いに平行に保持棒1の長手方向へ延在する二本のガイド長孔4aと、二枚のガイド板4の先端部間に基端部を固定されてそのガイド板4の先端部から保持棒1の長手方向へ突出するリンク支持部材5と、を具えている。   The rescue jack of this embodiment is disposed at the holding rod 1 made of, for example, a metal pipe and at the tip of the holding rod 1 (the right end in FIG. 1) and in a closed state (FIGS. 1, 1) The base end portion is fixed to two open / close members 2 in which the outward supporting surface 2a has a hook shape in 2) and the bracket 3 fixed to the tip end portion of the holding rod 1, and the longitudinal direction of the holding rod 1 And the two guide plates 4 positioned apart from each other in the direction crossing the longitudinal direction of the holding bar 1 and the respective guide plates 4, the holding bar 1 in the vicinity of the base of the guide plate 4 Of two spaced apart from one another in a direction transverse to the longitudinal direction of the holding plate 1 and extending in the longitudinal direction of the holding rod 1 parallel to one another as they approach each other towards the tip of the guide plate 4 Guide long hole 4a and the tip of two guide plates 4 And comprises fixed a proximal end and link support member 5 that protrudes from the distal end of the guide plate 4 in the longitudinal direction of the holding rods 1, to.

この実施例の救助用ジャッキはまた、二枚のガイド板4にそれらの外側から各々対向して位置するとともに二枚の連結板6を介して箱型断面状に互いに一体に結合され、二枚のガイド板4の側端部と連結板6との摺接により保持棒1の長手方向への進退移動を案内される二枚のスライド板7と、各スライド板7の基端部近傍に形成され、保持棒1の長手方向と交差する方向に互いに離間するとともに整列して延在する二本の駆動長孔7aと、各スライド板7の先端部近傍に設けられ、保持棒1の長手方向と交差する方向に互いに離間して位置する二つの先端部側枢支部としての二本の支持孔7bと、を具えている。   The rescue jacks of this embodiment are also disposed integrally on the two guide plates 4 so as to face each other from the outside thereof and via the two connection plates 6 in a box-shaped cross section. Two slide plates 7 which are guided in the longitudinal direction of the holding rod 1 by the sliding contact between the side end of the guide plate 4 and the connection plate 6 and the vicinity of the base end of each slide plate 7 Provided in the vicinity of the tip portion of each slide plate 7 and in the vicinity of the tip of each slide plate 7 in the longitudinal direction of the holding bar 1 And two support holes 7b as two distal end side pivoting parts spaced apart from each other in the direction intersecting with.

この実施例の救助用ジャッキはさらに、二枚のスライド板7の各々の駆動長孔7aとそのスライド板7が対向するガイド板4のガイド長孔4aとに挿通された揺動軸8(図2参照)を基端部に有するとともに各開閉部材2の基端部(図2〜図5では左方端部)に先端部を揺動可能に連結されて、互いに同一の開閉部材2に連結された二本で対をなす四本の第1リンク部材9と、二枚のスライド板7の各々の支持孔7bによって基端部の支持軸10aを揺動可能に支持されるとともに各開閉部材2の長手方向中間部に先端部の連結軸10bを揺動可能に連結されて、互いに同一の開閉部材2に連結された二本で対をなすとともに、互いに同一の開閉部材2に連結された対をなす第1リンク部材9と一緒に四節リンク機構の一部を構成する四本の第2リンク部材10と、各第2リンク部材10の長手方向中間部とリンク支持部材5とを連結し、スライド板7の前進移動に伴って各第2リンク部材10を、図2に示す保持棒1の長手方向と概略平行な当初位置から、図3〜図5に示す保持棒1の長手方向と交差する方向へ延在する起き上がり位置へ揺動させる四本の第3リンク部材11と、を具えており、ここで、二枚のスライド板7の各々の二本の駆動長孔7aおよびそのスライド板7が対向するガイド板4の二本のガイド長孔4aと、それら駆動長孔7aおよびガイド長孔4aの重なる位置に挿通された二本の揺動軸8とは、第1リンク部材9の基端部を揺動可能に支持する基端部側枢支部を構成する。また、互いに同一の開閉部材2に連結された第1リンク部材9および第2リンク部材10と、その開閉部材2と、スライド板7とは、四節リンク機構を構成する。   The rescue jack of this embodiment further includes a swing shaft 8 (see FIG. 1) inserted through the drive slots 7a of the two slide plates 7 and the guide slots 4a of the guide plate 4 to which the slide plates 7 face. 2) at the proximal end and the distal end is pivotally connected to the proximal end (left end in FIGS. 2 to 5) of each opening / closing member 2 and is connected to the same opening / closing member 2 The support shaft 10a of the base end portion is swingably supported by the four first link members 9 forming a pair of two and the support holes 7b of the two slide plates 7, and the respective opening and closing members The connecting shaft 10b at the tip end portion is swingably connected to the longitudinal middle portion of 2 and paired with the same opening / closing member 2 and forming a pair and being connected to the same opening / closing member 2 Four of the four which form part of the four-bar linkage together with the first link member 9 forming a pair The second link member 10, the longitudinal middle portion of each second link member 10, and the link support member 5 are connected, and each second link member 10 is shown in FIG. 2 as the slide plate 7 moves forward. Four third link members 11 which are swung from an initial position substantially parallel to the longitudinal direction of 1 to a rising position extending in a direction intersecting with the longitudinal direction of the holding rod 1 shown in FIGS. Here, the two drive elongated holes 7a of the two slide plates 7 and the two guide elongated holes 4a of the guide plate 4 to which the slide plates 7 are opposed, the drive elongated holes 7a, and The two swinging shafts 8 inserted at the overlapping positions of the guide long holes 4a constitute a proximal end side pivoting portion that swingably supports the proximal end portion of the first link member 9. Moreover, the 1st link member 9 and the 2nd link member 10 which were mutually connected to the opening-and-closing member 2 mutually mutually, the opening-and-closing member 2 and the slide plate 7 comprise a four-bar link mechanism.

そしてこの実施例の救助用ジャッキは、二枚のスライド板7を保持棒1の長手方向へ進退移動させるスライド板駆動手段としてウォームギヤ機構12を具え、図6は、そのウォームギヤ機構を拡大して示す透視図であり、ここにおけるウォームギヤ機構12は、保持棒1内に回転可能かつ進退移動可能に配置され、保持棒1の基端部付近に設けられたギヤボックス13内で保持棒1内から露出するとともに先端部におねじ部14aを形成された駆動ロッド14と、その駆動ロッド14の外周面に設けられた図示しないスプラインと嵌合して駆動ロッド14の長手方向へ移動可能に駆動ロッド14と結合したウォームホイール15と、ギヤボックス13内に回転可能に支持されてウォームホイール15と噛合するウォームギヤ16と、を有しており、駆動ロッド14の先端部のおねじ部14aは、把持棒1の先端部のブラケット3の貫通孔内のめねじ部と螺合しつつそのブラケット3を貫通し、そのおねじ部14aの先端部は、二枚のガイド板4の間に位置して二枚の連結板6を結合する図示しない結合部材に回転可能に連結されている。また、ウォームギヤ16に対し回動可能に貫通する駆動軸17の両端部は、ギヤボックス13からそれぞれ突出して、例えば取手型のハンドル18の基端部に結合されている。   The rescue jack of this embodiment comprises a worm gear mechanism 12 as slide plate drive means for moving the two slide plates 7 back and forth in the longitudinal direction of the holding rod 1, and FIG. 6 shows the worm gear mechanism enlarged. The worm gear mechanism 12 in this case is disposed rotatably and movably back and forth in the holding rod 1, and is exposed from the holding rod 1 in a gear box 13 provided near the base end of the holding rod 1. At the same time, the drive rod 14 having a screw portion 14a formed at the tip end thereof and a spline (not shown) provided on the outer peripheral surface of the drive rod 14 are engaged with each other to move the drive rod 14 movably in the longitudinal direction of the drive rod 14 And a worm gear 16 rotatably supported in the gear box 13 and engaged with the worm wheel 15. The male screw 14a at the tip of the drive rod 14 penetrates the bracket 3 while screwing with the female screw in the through hole of the bracket 3 at the tip of the grip rod 1, and the male screw 14a The tip is rotatably coupled to a coupling member (not shown) located between the two guide plates 4 and coupling the two coupling plates 6. Further, both end portions of the drive shaft 17 rotatably penetrated to the worm gear 16 project from the gear box 13 and are coupled to the base end portion of a handle 18 of, for example, a handle type.

図7は、上記ウォームギヤ機構12とそこに組み合わされた後述のツーウェイクラッチ19とを簡略化して示す説明図であり、このウォームギヤ機構12は基本的には、ウォームギヤ16の周囲に形成されて概略その周方向に延在する多数の歯とウォームホイール15の周囲に形成されて概略その軸線方向へ延在する多数の歯とが噛合して、ウォームギヤ16の回転をそれに対して軸線が直交するウォームホイール15に伝達する。ここで、ハンドル18に結合された駆動軸17とウォームギヤ16の両端部との間には、ワンウェイクラッチの一種としてのツーウェイクラッチ19がそれぞれ設けられており、このツーウェイクラッチ19は、ウォームギヤ16の一端部に結合された外輪20と、その外輪20の内周面20aに対し楔状の隙間を画成する外周面21aを持つ駆動部材21と、外輪20の内周面20aと駆動部材21の外周面21aとの間に位置する複数本のローラ22と、それらのローラ22をそれぞれ同じ向きの上記楔状の隙間に保持する筒状の保持器23と、を有し、保持器23は駆動部材21と摩擦結合するとともに、ハンドル18の内側に配置したここではコ字状の切替えレバー24の基部とも摩擦結合している。   FIG. 7 is an explanatory view schematically showing the worm gear mechanism 12 and a two-way clutch 19 described later combined with the worm gear mechanism 12. Basically, the worm gear mechanism 12 is formed around the worm gear 16 and schematically shown. A worm wheel having a plurality of circumferentially extending teeth and a plurality of teeth formed around the worm wheel 15 and extending substantially in the axial direction meshing with each other to rotate the worm gear 16 at an axis perpendicular thereto. Transmit to 15. Here, a two-way clutch 19 as a kind of one-way clutch is provided between the drive shaft 17 coupled to the handle 18 and both ends of the worm gear 16, and the two-way clutch 19 is one end of the worm gear 16. A drive member 21 having an outer ring 20 coupled to the outer portion and an outer peripheral surface 21a defining a wedge-shaped gap with the inner peripheral surface 20a of the outer ring 20; an inner peripheral surface 20a of the outer ring 20; and an outer peripheral surface of the drive member 21 21a, and a cylindrical cage 23 for holding the rollers 22 in the above-mentioned wedge-shaped gaps in the same direction, and the cage 23 comprises a driving member 21 and In addition to being frictionally coupled, it is also frictionally coupled to the base of the U-shaped switching lever 24 disposed inside the handle 18.

これにより、二枚のスライド板7を図2では右方へ前進移動させる場合には、切替えレバー24の回動操作で保持器23を一旦図7では時計方向へ回動させてローラ22を駆動軸17の回転方向後方側の楔状の隙間に位置させ、ハンドル18を揺動させて駆動軸17を図7中の矢印で示すように反時計方向へ回動させると、ローラ22が外輪20の内周面20aと駆動部材21の外周面21aとの間の回転方向後方側の楔状の隙間に挟まって駆動軸17の駆動力をウォームギヤ16に伝達し、これによりウォームギヤ16も図7中の矢印で示すように反時計方向へ回動してウォームホイール15を回転させ、このウォームホイール15の回転が上記スプラインを介して駆動ロッド14を図7中の矢印で示すように回転させ、この回転で駆動ロッド14がその先端部のおねじ部14aとブラケット3のめねじ部との螺合によって二枚のガイド板4の間を前進移動して、二枚のスライド板7を前進移動させる。そして、ウォームギヤ16をさらに回動させるためにハンドル18を元の位置に揺動させる際には、ツーウェイクラッチ19がウォームギヤ16を駆動軸17から解放してハンドル18単独での元の位置への揺動を可能にする。   Thus, when moving the two slide plates 7 forward in FIG. 2, the holder 23 is temporarily rotated clockwise in FIG. 7 by the rotation operation of the switching lever 24 to drive the roller 22. When the drive shaft 17 is pivoted counterclockwise as shown by the arrow in FIG. The drive force of the drive shaft 17 is transmitted to the worm gear 16 by being pinched by a wedge-shaped gap on the rear side in the rotational direction between the inner peripheral surface 20a and the outer peripheral surface 21a of the drive member 21, whereby the worm gear 16 also has an arrow in FIG. As shown in FIG. 7, the worm wheel 15 is rotated counterclockwise to rotate the worm wheel 15. The rotation of the worm wheel 15 causes the drive rod 14 to rotate as indicated by the arrow in FIG. Drive De 14 and forward movement between the two guide plates 4 by screwing between the male screw portion 14a and the internal thread portion of the bracket 3 of the tip, is moved forward to two of the slide plate 7. Then, when the handle 18 is pivoted to the original position in order to further rotate the worm gear 16, the two-way clutch 19 releases the worm gear 16 from the drive shaft 17 and swings the handle 18 alone to the original position. Enable movement.

また、二枚のスライド板7を図2では左方へ後退移動させる場合には、切替えレバー24の回動操作で保持器23を一旦図7では反時計方向へ回動させてローラ22を上記と反対側の楔状の隙間に位置させ、ハンドル18を揺動させて駆動軸17を上記と逆に時計方向へ回動させると、ローラ22が外輪20の内周面20aと駆動部材21の外周面21aとの間の回転方向後方側の楔状の隙間に挟まって駆動軸17の駆動力をウォームギヤ16に伝達し、これによりウォームギヤ16も図7中の時計方向へ回動してウォームホイール15を回転させ、このウォームホイール15の回転が上記スプラインを介して駆動ロッド14を上記と逆方向へ回転させ、この回転で駆動ロッド14がその先端部のおねじ部14aとブラケット3のめねじ部との螺合によって二枚のガイド板4の間を後退移動して、二枚のスライド板7を後退移動させる。そして、ウォームギヤ16をさらに回動させるためにハンドル18を元の位置に揺動させる際には、ツーウェイクラッチ19がウォームギヤ16を駆動軸17から解放してハンドル18単独での元の位置への揺動を可能にする。   Further, when the two slide plates 7 are moved backward in FIG. 2, the holder 23 is temporarily rotated counterclockwise in FIG. 7 by the rotation operation of the switching lever 24 to rotate the roller 22 as described above. When the drive shaft 17 is pivoted in the opposite direction to the above by swinging the handle 18 so as to be positioned in a bowl-shaped gap on the opposite side of the roller 22, the roller 22 is the outer peripheral surface 20a of the outer ring 20 and the outer periphery of the drive member 21 The drive force of the drive shaft 17 is transmitted to the worm gear 16 by being pinched by a wedge-shaped gap on the rear side in the rotational direction between the surface 21a and the worm gear 16. Thereby, the worm gear 16 is also rotated clockwise in FIG. The rotation of the worm wheel 15 causes the drive rod 14 to rotate in the opposite direction to the above via the splines, and with this rotation, the drive rod 14 rotates with the external thread portion 14a at its tip and the internal thread portion of the bracket 3 And backward movement between the two guide plates 4 by screwing, moved backward to two of the slide plate 7. Then, when the handle 18 is pivoted to the original position in order to further rotate the worm gear 16, the two-way clutch 19 releases the worm gear 16 from the drive shaft 17 and swings the handle 18 alone to the original position. Enable movement.

この実施例の救助用ジャッキはさらに、図1に示すように、例えば保持棒1の基端部と中間部とに、例えば表面に滑り止め形状を持つ樹脂製のグリップ25を具えており、この実施例の救助用ジャッキを災害現場等で使用する際には、例えばそれらのグリップ25を両手で掴むことで保持棒1を持って、保持棒1の先端部に配置されて互いに接した閉状態で外向きの支持面2aが先細りの楔状をなしている二つの開閉部材2を加力対象である地面や建物の床面等と倒壊物等との間あるいは倒壊物同士の間等の高重量あるいは強固な物体の隙間に差し込み、ハンドル18を繰り返し揺動させてウォームギヤ機構12で駆動ロッド14を回転させながら前進移動させることでスライド板7をガイド板4に対し保持棒1の長手方向へ前進移動させると、そのスライド板7の前進移動に伴って二対の第1リンク部材9の基端部の揺動軸8がガイド板4のガイド長孔4aに沿って前方へ移動しつつスライド板7の駆動長孔7a内で互いに、第2リンク部材10の基端部の支持軸10a同士の距離と同程度まで接近移動して、互いに同一の開閉部材2に連結された第1リンク部材9の対と第2リンク部材10の対とが当初の非平行四節リンク状態から実質的に平行四節リンク状態に移行し、これと並行して、スライド板7の前進移動に伴って第2リンク部材10が第3リンク部材11により保持棒1の長手方向と交差する方向へ延在する起き上がり位置へ揺動され、それと一緒に第1リンク部材9も揺動され、二つの開閉部材2が保持棒1の長手方向と交差する方向へ互いに離間して、それらの開閉部材2の支持面2a同士が互いに鋭角をなす状態から実質的に互いに平行状態となる開状態に移行し、加力対象からの反力で開閉部材2が隙間から押し出されるのを防止する。そして特に図5に示す二つの開閉部材2の全開状態では、各開閉部材2を支持する第1リンク部材9の対と第2リンク部材10の対とが保持棒1の長手方向と概ね直交する方向へ延在して加力対象からの反力に耐え、加力対象を強固に支える。   The rescue jack of this embodiment further comprises, as shown in FIG. 1, for example, a resin grip 25 having a non-slip shape on the surface, for example, at the base end and the middle part of the holding rod 1 When the rescue jacks of the embodiment are used at a disaster site or the like, the holding rod 1 is held by grasping the grips 25 with both hands, for example. The two open / close members 2 of which the outward supporting surface 2a is in the form of a tapered wedge are high in weight between the ground, the floor of a building, etc. and the collapsing object, etc. or between collapsing objects etc. Alternatively, the slide plate 7 is advanced with respect to the guide plate 4 in the longitudinal direction of the holding rod 1 by inserting it into the gap of a strong object, moving the handle 18 repeatedly and moving the drive rod 14 forward while rotating the drive rod 14 with the worm gear mechanism 12 Move The rocking shaft 8 at the proximal end of the two pairs of first link members 9 is moved forward along the guide long hole 4a of the guide plate 4 with the forward movement of the slide plate 7 while the slide plate 7 is driven. The pair of first link members 9 connected to the same opening / closing member 2 by moving close to each other in the long hole 7a to the same degree as the distance between the support shafts 10a of the base end of the second link member 10 The pair of second link members 10 shifts from the initial non-parallel four-bar link state to a substantially parallel four-bar link state, and in parallel with this, the second link member 10 along with the forward movement of the slide plate 7. Is rocked by the third link member 11 to a rising position extending in a direction intersecting the longitudinal direction of the holding rod 1, and the first link member 9 is also rocked with it, and the two open / close members 2 Spaced apart from each other in a direction transverse to the longitudinal direction of the Substantially shifted to the open state to be parallel with each other from a state in which the support surface 2a between the closed part material 2 is an acute angle to each other, the opening and closing member 2 by the reaction force from the force target is prevented from being extruded from the gap. In particular, in the fully open state of the two opening and closing members 2 shown in FIG. 5, the pair of first link members 9 supporting the respective opening and closing members 2 and the pair of second link members 10 are substantially orthogonal to the longitudinal direction of the holding rod 1 It extends in the direction to bear the reaction force from the target and strongly support the target.

従って、この実施例の救助用ジャッキによれば、加力対象である地面や建物の床面等と倒壊物等との間あるいは倒壊物同士の間等の高重量あるいは強固な物体の間の隙間が小さくても、その隙間に開閉部材2を挿入してハンドル18に力を加えることで隙間を広げることができ、これにより隙間に挟まれた人を救助することができる。   Therefore, according to the jack for rescue of this embodiment, a gap between a heavy object or a strong object such as between the ground, a floor surface of a building, or the like which is to be applied and the collapsing object or the colliding object Even if the distance is small, the gap can be expanded by inserting the opening / closing member 2 into the gap and applying a force to the handle 18, whereby the person caught in the gap can be rescued.

しかも、この実施例の救助用ジャッキによれば、スライド板7の前進移動に伴って、二対の第1リンク部材9の基端部の揺動軸8がガイド板4のガイド長孔4aに沿って前方へ移動しつつスライド板7の駆動長孔7a内で互いに、第2リンク部材10の基端部の支持軸10a同士の距離と同程度まで接近移動して、互いに同一の開閉部材2に連結された第1リンク部材9の対と第2リンク部材10の対とが当初の非平行四節リンク機構状態から実質的に平行四節リンク機構状態に移行することにより、第1リンク部材9と第2リンク部材10と開閉部材2とスライド板7とで構成される四節リンク機構が、二つの開閉部材2の外向きの支持面2aを、互いに鋭角をなす傾斜状態から互いに平行な状態に移行させるので、ガイド長孔4aの形状設定によって任意の段階で二つの開閉部材2の外向きの支持面2aを、互いに鋭角をなす傾斜状態から互いに平行な状態に移行させることができ、特に図示例では、各ガイド板4の二本のガイド長孔4aがガイド板4の基部近傍で保持棒1の長手方向と交差する方向に互いに離間して位置するとともにそのガイド板4の先端部へ向かうにつれて互いに接近して全長の大部分で互いに平行に保持棒1の長手方向へ延在するので、二つの開閉部材2の開き始めの段階で二つの開閉部材2の外向きの支持面2aを、互いに鋭角をなす傾斜状態から互いに平行な状態に移行させ、その後は二つ支持面2aを互いに平行な状態に維持したまま二つの開閉部材2を全開状態まで開くことができる。   Moreover, according to the jack for rescue of this embodiment, the rocking shaft 8 at the base end of the two pairs of first link members 9 is inserted into the guide long hole 4 a of the guide plate 4 along with the forward movement of the slide plate 7. Along the same distance as the distance between the support shafts 10a at the proximal end of the second link member 10, the same open / close members 2 The first link member is obtained by transferring the pair of first link members 9 and the pair of second link members 10 connected to each other from the initial non-parallel four-bar linkage state to the substantially parallel four-bar linkage state A four-bar link mechanism composed of the second link member 10, the opening and closing member 2 and the slide plate 7 is parallel to each other from an inclined state in which the outward facing support surfaces 2a of the two opening and closing members 2 form an acute angle. Since it shifts to the state, the shape of the guide long hole 4a In an arbitrary step, the outward facing support surfaces 2a of the two opening and closing members 2 can be shifted from an inclined state forming an acute angle to a mutually parallel state, and in particular, two guide plates 4 of each guide plate 4 are illustrated. The guide elongated holes 4a are spaced apart from each other in the direction crossing the longitudinal direction of the holding rod 1 in the vicinity of the base of the guide plate 4 and close to each other as the tip of the guide plate 4 Since they extend parallel to each other in the longitudinal direction of the holding rod 1, the outward supporting surfaces 2 a of the two opening and closing members 2 are parallel to each other from the inclined state forming an acute angle at the beginning of the opening of the two opening and closing members 2. After shifting to the state, it is possible to open the two opening and closing members 2 to the fully open state while keeping the two support surfaces 2a parallel to each other.

さらに、この実施例の救助用ジャッキによれば、スライド板駆動手段として、保持棒1内で保持棒1の長手方向へ延在してその回転によりねじ機構を介してスライド板7を進退移動させる駆動ロッド14と、駆動ロッド14に駆動結合されたウォームホイール15と、ウォームホイール15と噛合するウォームギヤ16とで構成されたウォームギヤ機構12と、ウォームギヤ16を回転させるハンドル18と、を有していることから、スライド板駆動手段をコンパクトに構成して救助用ジャッキの持ち運びを容易なものとすることができ、また、ハンドル18に加えるトルクに対して回転力を増大させて駆動ロッド14を回転させることができるので、開閉部材2の強力な拡張力を容易に得ることができる。   Furthermore, according to the rescue jack of this embodiment, as the slide plate driving means, it extends in the longitudinal direction of the holding rod 1 in the holding rod 1 and moves the slide plate 7 back and forth through the screw mechanism by its rotation. It has a worm gear mechanism 12 composed of a drive rod 14, a worm wheel 15 drivingly connected to the drive rod 14, a worm gear 16 meshing with the worm wheel 15, and a handle 18 for rotating the worm gear 16. Thus, the slide plate drive means can be made compact to facilitate carrying of the rescue jack, and the rotational force is increased with respect to the torque applied to the handle 18 to rotate the drive rod 14. Therefore, the strong expansion force of the opening and closing member 2 can be easily obtained.

そして、この実施例の救助用ジャッキによれば、ハンドル18とウォームギヤ16との間に、スライド板7の前進方向へのウォームギヤ16の回転時にハンドル18とウォームギヤ16とを摩擦結合する一方それと逆方向へのウォームギヤ16の回転時はハンドル18とウォームギヤ16との間の摩擦結合を解放する機能を持つツーウェイクラッチ12が設けられていることから、ハンドル18の揺動を繰り返すだけの簡単な操作でウォームギヤ16を回転させてスライド板7を前進移動させることができ、しかも切替えレバー24の切替え操作で、スライド板7の後退方向へのウォームギヤ16の回転時にも同様の操作でウォームギヤ16を回転させることができる。   Then, according to the rescue jack of this embodiment, when the worm gear 16 rotates in the forward direction of the slide plate 7 between the handle 18 and the worm gear 16, the handle 18 and the worm gear 16 are frictionally coupled to each other. Since the two-way clutch 12 having the function of releasing the frictional connection between the handle 18 and the worm gear 16 is provided when the worm gear 16 is rotating, the worm gear can be operated simply by repeating the swinging of the handle 18. The slide plate 7 can be moved forward by rotating 16 and the worm gear 16 can be rotated by the same operation even when the worm gear 16 rotates in the backward direction of the slide plate 7 by the switching operation of the switching lever 24. it can.

以上、図示例に基づき説明したが、この発明は上述の例に限定されるものでなく特許請求の範囲の記載範囲内で適宜変更し得るものであり、例えばツーウェイクラッチ12に代えて通常のワンウェイクラッチを用い、スライド板7の後退方向へのウォームギヤ16の回転時にはワンウェイクラッチを解放状態にして別途のハンドルでウォームギヤ16を連続回転させるように構成してもよい。   As mentioned above, although it demonstrated based on the example of illustration, this invention is not limited to the above-mentioned example, It can change suitably within the statement range of a claim, for example, it replaces with two-way clutch 12, and the usual one way When the worm gear 16 rotates in the backward direction of the slide plate 7 using a clutch, the one-way clutch may be released and the worm gear 16 may be continuously rotated by a separate handle.

さらに、駆動ロッド14にウォームホイール15を固定するとともに、ブラケット3の貫通孔からめねじ部をなくし、その貫通孔内に遊挿した駆動ロッド14の先端部のおねじ部14aを、二枚のスライド板7を連結する二枚の連結板6を結合する上記結合部材に設けためねじ部に螺合させて、駆動ロッド14の回転で二枚のスライド板7を進退移動させるようにしても良く、あるいは、スライド板駆動手段として、ラック・ピニオン機構12に代えて保持棒1の基部に設けたエアシリンダあるいは油圧シリンダで保持棒1内の駆動ロッド14を介してスライド板7を進退移動させるようにしても良い。   Furthermore, while fixing the worm wheel 15 to the drive rod 14 and eliminating the female screw portion from the through hole of the bracket 3, the male screw portion 14a of the tip of the drive rod 14 loosely inserted in the through hole The two connecting plates 6 for connecting the plates 7 may be screwed into the threaded portion so as to be provided in the connecting member to connect the two sliding plates 7 back and forth by the rotation of the drive rod 14, Alternatively, the slide plate 7 may be moved forward and backward via the drive rod 14 in the holding rod 1 by an air cylinder or hydraulic cylinder provided at the base of the holding rod 1 instead of the rack and pinion mechanism 12 as slide plate driving means. It is good.

さらに、二枚のガイド板4からガイド長孔4aをなくすとともに、二枚のスライド板7に基端部側枢支部として駆動長孔7aの代りに支持孔7bと同様の支持孔を形成し、それらの支持孔で第1リンク部材9と第2リンク部材10との基端部の支持軸をそれぞれ揺動可能に支持するとともに、それら第1リンク部材9と第2リンク部材10との基端部の支持孔の間隔よりも、開閉部材2に設ける第1リンク部材9と第2リンク部材10との先端部の支持孔の間隔を異ならせ、もしくは第1リンク部材9と第2リンク部材10との長さを異ならせ、あるいはそれら間隔の相違と長さの相違とを組み合わせて、第1リンク部材9と第2リンク部材10と開閉部材2とスライド板7とで非平行四節リンク機構を構成することで、スライド板7の前進移動に伴って、二つの開閉部材2の外向きの支持面2aを互いに鋭角をなす傾斜状態から互いに平行な状態に移行させるようにしても良い。   Further, the guide long holes 4a are eliminated from the two guide plates 4 and support holes similar to the support holes 7b are formed in the two slide plates 7 as the base end side pivoting portions instead of the drive long holes 7a, The support holes of the proximal end portions of the first link member 9 and the second link member 10 are swingably supported by the support holes, and the proximal ends of the first link member 9 and the second link member 10 The distance between the support holes at the tip of the first link member 9 and the second link member 10 provided in the opening and closing member 2 is made different from the distance between the support holes of the parts, or the first link member 9 and the second link member 10 Non-parallel quadrilateral link mechanism between the first link member 9, the second link member 10, the opening / closing member 2 and the slide plate 7 by making the length of the first link member 9 different Advance the slide plate 7 by configuring With the dynamic, it may be caused to transition from the inclined state at an acute angle to one another support surface 2a of the outward two closing member 2 in parallel to each other.

かくしてこの発明の救助用ジャッキによれば、加力対象である地面や建物の床面等と倒壊物等との間あるいは倒壊物同士の間等の高重量あるいは強固な物体の間の隙間が小さくても、その隙間に開閉部材を挿入して力を加えることで隙間を広げることができ、これにより隙間に挟まれた人を救助することができる。   Thus, according to the rescue jack of the present invention, the gap between high weight or strong objects such as between the ground or floor of a building subject to load and the collapsing objects or between collapsing objects is small. Even by inserting the opening and closing member into the gap and applying a force, the gap can be expanded, and thereby, a person caught in the gap can be rescued.

1 保持棒
2 開閉部材
3 ブラケット
4 ガイド板
4a ガイド長孔
5 リンク支持部材
6 連結板
7 スライド板
7a 駆動長孔
7b 支持孔
8 揺動軸
9 第1リンク部材
10 第2リンク部材
10a 支持軸
10b 連結軸
11 第3リンク部材
12 ウォームギヤ機構
13 ギヤボックス
14 駆動ロッド
14a おねじ部
15 ウォームホイール
16 ウォームギヤ
17 駆動軸
18 ハンドル
19 ツーウェイクラッチ
20 外輪
20a 内周面
21 駆動部材
21a 外周面
22 ローラ
23 保持器
24 切替えレバー
25 グリップ
Reference Signs List 1 holding bar 2 opening / closing member 3 bracket 4 guide plate 4 a guide long hole 5 link support member 6 connection plate 7 slide plate 7 a drive long hole 7 b support hole 8 swing shaft 9 first link member 10 second link member 10 a support shaft 10 b Connecting shaft 11 Third link member 12 Worm gear mechanism 13 Gear box 14 Drive rod 14a Male thread 15 Worm wheel 16 Worm gear 17 Drive shaft 18 Handle 19 Two-way clutch 20 Outer ring 20a Inner peripheral surface 21 Drive member 21a Outer peripheral surface 22 Roller 23 Retainer 24 switching lever 25 grip

Claims (4)

保持棒と、
前記保持棒の先端部に配置されるとともに互いに接した閉状態で外向きの支持面が楔状をなす二つの開閉部材と、
前記保持棒の先端部に基端部を固定されて各々その保持棒の長手方向へ延在するとともにその保持棒の長手方向と交差する方向に互いに離間して位置する二枚のガイド板と、
前記二枚のガイド板の先端部間に基端部を固定されてそのガイド板の先端部から前記保持棒の長手方向へ突出するリンク支持部材と、
前記二枚のガイド板に各々対向して位置するとともに互いに一体に結合され、前記二枚のガイド板により前記保持棒の長手方向への進退移動を案内される二枚のスライド板と、
前記各スライド板の基端部近傍に設けられ、前記保持棒の長手方向と交差する方向に互いに離間して位置する二つの基端部側枢支部と、
前記各スライド板の先端部近傍に設けられ、前記保持棒の長手方向と交差する方向に互いに離間して位置する二つの先端部側枢支部と、
前記二枚のスライド板の各々の前記基端部側枢支部によって基端部を揺動可能に支持されるとともに前記各開閉部材の基端部に先端部を揺動可能に連結されて、互いに同一の前記開閉部材に連結された二本で対をなす四本の第1リンク部材と、
前記二枚のスライド板の各々の前記先端部側枢支部によって基端部を揺動可能に枢支されるとともに前記各開閉部材の長手方向中間部に先端部を揺動可能に連結されて、互いに同一の前記開閉部材に連結された二本で対をなすとともに、互いに同一の前記開閉部材に連結された前記対をなす第1リンク部材と一緒に四節リンク機構の一部を構成する四本の第2リンク部材と、
前記各第2リンク部材の長手方向中間部と前記リンク支持部材とを連結し、前記スライド板の前進移動に伴い各第2リンク部材を前記保持棒の長手方向と概略平行な当初位置から前記保持棒の長手方向と交差する起き上がり位置へ揺動させる四本の第3リンク部材と、
前記二枚のスライド板を前記保持棒の長手方向へ進退移動させるスライド板駆動手段と、
を具え、
前記第1リンク部材と前記第2リンク部材と前記開閉部材と前記スライド板とで構成される四節リンク機構が、前記保持棒の長手方向と概略平行な当初位置から前記保持棒の長手方向と交差する起き上がり位置への前記第2リンク部材の揺動に伴って、前記二つの開閉部材の前記外向きの支持面を、前記楔状の状態から互いに平行な状態に移行させるものであることを特徴とする救助用ジャッキ。
With a holding bar,
The two open / close members disposed at the tip of the holding rod and in contact with each other and in a closed state and in which the outwardly facing support surfaces are bowl-shaped;
Two guide plates fixed at their distal ends to the holding bar and extending in the longitudinal direction of the holding bar and spaced apart from each other in a direction intersecting the longitudinal direction of the holding bar;
A link support member fixed at its proximal end between the distal ends of the two guide plates and projecting from the distal end of the guide plate in the longitudinal direction of the holding bar;
Two slide plates which are respectively positioned opposite to the two guide plates and integrally coupled to each other and which are guided by the two guide plates to move forward and backward in the longitudinal direction of the holding rod;
Two proximal end side pivoting portions provided in the vicinity of the proximal end portion of each slide plate and spaced apart from each other in a direction intersecting the longitudinal direction of the holding bar;
Two tip portion side pivoting portions provided in the vicinity of the tip portion of each slide plate and spaced apart from each other in the direction intersecting the longitudinal direction of the holding bar;
The proximal end is pivotally supported by the proximal end side pivoting portion of each of the two slide plates, and the distal end is pivotally connected to the proximal end of each of the opening and closing members. Two pairs of four first link members connected to the same opening / closing member;
The proximal end is pivotably supported by the distal end side pivoting portion of each of the two slide plates, and the distal end is pivotally connected to a longitudinal intermediate portion of each opening / closing member, A pair forming a part of a four-bar linkage together with a pair of first link members connected to the same opening and closing member while forming a pair with the two opening and closing members connected to each other A second link member of the book,
A longitudinal middle portion of each second link member and the link support member are connected, and each second link member is held from an initial position substantially parallel to the longitudinal direction of the holding bar as the slide plate is moved forward. Four third link members that are swung to a raised position that intersects the longitudinal direction of the rod;
Slide plate drive means for moving the two slide plates in the longitudinal direction of the holding bar;
Equipped
A four-bar link mechanism composed of the first link member, the second link member, the opening / closing member, and the slide plate has a longitudinal direction of the holding bar from an initial position substantially parallel to the longitudinal direction of the holding bar It is characterized in that, with the swinging of the second link member to the crossing rising position, the outward supporting surfaces of the two opening and closing members are shifted from the bowl-like state to a mutually parallel state. A jack for rescue.
前記基端部側枢支部は、
前記各ガイド板に形成され、そのガイド板の基部近傍で前記保持棒の長手方向と交差する方向に互いに離間して位置するとともにそのガイド板の先端部へ向かうにつれて互いに接近して前記保持棒の長手方向へ延在する二本のガイド長孔と、
前記各スライド板の基端部近傍に形成され、前記保持棒の長手方向と交差する方向に互いに離間するとともに整列して延在する二本の駆動長孔と、
前記ガイド長孔と前記駆動長孔とに挿通された揺動軸と、
によって構成されていることを特徴とする、請求項1記載の救助用ジャッキ。
The proximal end side pivot portion is
The guide bars are formed on the respective guide plates and are spaced apart from each other in a direction crossing the longitudinal direction of the holding bar near the base of the guide plate and closer to each other toward the leading end of the guide plate. Two longitudinally extending guide slots;
Two drive slots formed in the vicinity of the proximal end of each slide plate and extending in alignment with each other in a direction intersecting with the longitudinal direction of the holding bar.
An oscillating shaft inserted into the guide elongated hole and the driving elongated hole;
The rescue jack according to claim 1, characterized in that it comprises:
前記スライド板駆動手段は、
前記保持棒内で前記保持棒の長手方向へ延在してその回転によりねじ機構を介して前記スライド板を進退移動させる駆動ロッドと、
前記駆動ロッドに駆動結合されたウォームホイールと、
前記ウォームホイールと噛合するウォームギヤと、
前記ウォームギヤを回転させるハンドルと、
を有していることを特徴とする、請求項1または2記載の救助用ジャッキ。
The slide plate drive means is
A driving rod which extends in the longitudinal direction of the holding rod in the holding rod and which rotates the slide plate via a screw mechanism by rotation thereof;
A worm wheel drive coupled to the drive rod;
A worm gear engaged with the worm wheel;
A handle for rotating the worm gear;
The rescue jack according to claim 1 or 2, characterized in that
前記ハンドルと前記ウォームギヤとの間に、前記スライド板の前進方向への前記ウォームギヤの回転時は前記ハンドルと前記ウォームギヤとを摩擦結合する一方それと逆方向への前記ウォームギヤの回転時は前記ハンドルと前記ウォームギヤとの間の摩擦結合を解放するワンウェイクラッチが設けられていることを特徴とする、請求項3記載の救助用ジャッキ。
When the worm gear rotates in the forward direction of the slide plate between the handle and the worm gear, the handle and the worm gear are frictionally coupled with each other, while the worm gear rotates in the opposite direction. A rescue jack according to claim 3, characterized in that a one-way clutch is provided which releases the frictional connection with the worm gear.
JP2015080850A 2015-04-10 2015-04-10 Rescue jack Active JP6524550B2 (en)

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RU207085U1 (en) * 2021-02-15 2021-10-12 Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" Министерства обороны Российской Федерации Screw wedge-jack for clearing rubble

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