JP2003285995A - Flat jack - Google Patents
Flat jackInfo
- Publication number
- JP2003285995A JP2003285995A JP2002093920A JP2002093920A JP2003285995A JP 2003285995 A JP2003285995 A JP 2003285995A JP 2002093920 A JP2002093920 A JP 2002093920A JP 2002093920 A JP2002093920 A JP 2002093920A JP 2003285995 A JP2003285995 A JP 2003285995A
- Authority
- JP
- Japan
- Prior art keywords
- sac
- flat
- jack
- airtight
- underframe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、重量物を支持する
ジャッキに関し、詳しくは機高の低いジャッキに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jack for supporting a heavy object, and more particularly to a jack having a low machine height.
【０００２】[0002]
【従来の技術】一般的に、橋桁はピア上に沓座部（Sho
e）を介して支持されている。そして、この沓座部は、
例えば数年おきに補修・交換が必要で、その場合仮受け
するものとして油圧ジャッキが使用されている。2. Description of the Related Art Generally, a bridge girder is mounted on a pier with a seat (Sho
supported through e). And this seat part is
For example, repair / replacement is required every few years, and in that case, a hydraulic jack is used as a temporary support.
【０００３】この時使用される補修用の油圧ジャッキ
は、円筒型のシリンダにピストンが収容され、そのピス
トンにラムが連設されると共に、ラム上端にヘッド部材
が取り付けられた一般的な構造のものである。そして、
この補修用の油圧ジャッキとして、例えば実公平７−９
９０２号が提案されている。The repair hydraulic jack used at this time has a general structure in which a piston is housed in a cylindrical cylinder, a ram is connected to the piston, and a head member is attached to the upper end of the ram. It is a thing. And
As a hydraulic jack for this repair, for example, fair fair 7-9
No. 902 is proposed.
【０００４】[0004]
【発明が解決しようとする課題】しかして、この種の円
筒型油圧ジャッキは、その能力により機高が大きく変わ
る。その原因は、油圧ジャッキの構造上、シリンダ、ピ
ストン、ラム、ヘッド等は、能力に応じて強度が必要と
されるため、能力がアップするとそれに伴い前記した各
構成部材の厚さ、大きさ等が増大する。一方、橋桁等の
重量物はピア上面に近い位置で支持されることが安定し
た支持につながる為、橋桁等を支持する沓座部の高さは
出来るだけ低く構成されている。従って、上記した状況
で使用される油圧ジャッキは、機高が低ければ低いほど
使用範囲が広く、狭い空間で使用することができる。However, the height of the cylindrical hydraulic jack of this type changes greatly depending on its capability. This is because the structure of the hydraulic jack requires that the cylinders, pistons, rams, heads, etc. have strength depending on their capabilities. Will increase. On the other hand, since heavy objects such as bridge girders are supported at a position close to the top surface of the pier, which leads to stable support, the height of the gear seats that support the bridge girders is configured as low as possible. Therefore, the hydraulic jack used in the above situation has a wider use range as the machine height is lower, and can be used in a narrow space.
【０００５】本発明は上記した従来の技術が有する問題
点に鑑みてなされたもので、その目的とするところは、
同じ能力であれば円筒型油圧ジャッキより機高を低くす
ることが出来る流体ジャッキを提供することにある。
又、他の目的は能力を増大しても機高が変わらない流体
ジャッキを提供することにある。The present invention has been made in view of the above-mentioned problems of the prior art, and the purpose thereof is to:
An object of the present invention is to provide a fluid jack which can be lower in machine height than a cylindrical hydraulic jack if it has the same ability.
Another object is to provide a fluid jack whose height does not change even if its capacity is increased.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成する為に
本発明が講じた技術的手段は、剛性を備え上面が開放し
た台枠内に、流体の注入により膨張する気密性扁平嚢体
を収容配置し、且つその気密性扁平嚢体の上面にヘッド
部材を配置した構成を特徴とする（請求項１）。上記台
枠は、気密性扁平嚢体の膨張方向を鉛直方向（上方）に
案内するものである。気密性扁平嚢体に注入する流体と
しては、液体、気体の何れでもよく、液体としては一般
的に利用されている油（油圧）、気体としては空気（空
気圧）等を採用することが出来る。気密性扁平嚢体の上
面に配置するヘッド部材は、所定の大きさ（受け面）を
有した単一のブロックでも、或いは複数個のブロックの
集合で所定の大きさ（受け面）を形成するもの等、何れ
でもよい。この構成により、流体の注入により気密性扁
平嚢体は上面が開放された台枠内を上方に向けて膨出
し、該嚢体の上面に配置したヘッド部材は上方に持ち上
げられる。そして、このジャッキの能力は、気密性扁平
嚢体の断面積×圧力で決定されるため、注入する圧力を
一定とした場合は、気密性扁平嚢体の断面積を大きくす
ることで能力の増大が可能となる。尚、ヘッド部材を複
数個のブロックで構成した場合は、各ヘッド部材が当て
面の形状に追従するため、ジャッキのヘッド部材を当接
する面が凹凸したものに有効である。Means for Solving the Problems The technical means taken by the present invention to achieve the above object is to provide an airtight flat sac that expands by injecting a fluid in an underframe having rigidity and an open upper surface. The present invention is characterized in that the head member is housed and arranged, and the head member is arranged on the upper surface of the airtight flat sac (claim 1). The underframe guides the expansion direction of the airtight flat sac in the vertical direction (upward). The fluid to be injected into the airtight flat sac may be either liquid or gas. As the liquid, commonly used oil (hydraulic pressure) and as the gas may be air (air pressure). The head member disposed on the upper surface of the airtight flat sac forms a single block having a predetermined size (receiving surface) or a set of a plurality of blocks to form a predetermined size (receiving surface). Any of them may be used. With this configuration, the airtight flat sac is bulged upward by injecting the fluid into the underframe whose upper surface is open, and the head member disposed on the upper surface of the sac is lifted upward. The capacity of this jack is determined by the cross-sectional area of the airtight flat sac and the pressure. Therefore, if the pressure to be injected is constant, increasing the cross-sectional area of the airtight flat sac increases the capacity. Is possible. When the head member is composed of a plurality of blocks, each head member follows the shape of the contact surface, so it is effective when the surface of the jack with which the head member abuts is uneven.
【０００７】又、上記台枠は、底部の上面に少なくとも
一対の側壁を一体に起立形成し、他方気密性扁平嚢体は
耐圧可撓性を備えた鋼板で、前記台枠の側壁間に嵌合す
る環状に構成し、その環状嚢体の側壁と密着する開口端
にシール材を取り付け、更に該気密性扁平嚢体に流体注
入用のポート口が設けた構成とする（請求項２）。底部
の上面に起立形成する一対の側壁は、前後の側壁、左右
の側壁、或いは底部の周縁に沿う環状の周壁等、何れで
もよく、要は気密性扁平嚢体に流体を注入した時、該扁
平嚢体が底部側及び水平方向への膨張が規制されて、鉛
直方向（上方）へ膨張させるように働くものであればよ
い。この構成により、構造簡単で安価に製作することが
可能となる。In the underframe, at least a pair of side walls are integrally formed upright on the upper surface of the bottom portion, while the airtight flat sac is a steel plate having pressure resistance flexibility and is fitted between the side walls of the underframe. The sealing member is attached to the opening end of the ring-shaped sac that is in close contact with the side wall of the sac, and the airtight flat sac has a port for injecting fluid (claim 2). The pair of side walls standingly formed on the upper surface of the bottom portion may be the front and rear side walls, the left and right side walls, or an annular peripheral wall along the peripheral edge of the bottom portion, as long as the fluid is injected into the airtight flat sac. It suffices that the flat sac is restricted in expansion in the bottom side and in the horizontal direction and acts so as to expand in the vertical direction (upward). With this configuration, the structure is simple and it can be manufactured at low cost.
【０００８】更に、上記気密性扁平嚢体は、台枠の一対
の側壁と交差する上面の両側に半円状の膨出部を予め屈
曲形成して、両膨出部間に流体の注入により膨らみ上昇
する作動部を形成し、その作動部の上面にヘッド部材を
載置するように構成してもよい(請求項３)。この構成に
より、気密性扁平嚢体の膨張／収縮が反復して確実に行
なわれる。そして、ヘッド部材が膨出部間の谷部に配置
されているため、作動開始前の機高を低く出来る。Further, in the airtight flat sac, the semicircular bulging portions are preliminarily formed on both sides of the upper surface intersecting the pair of side walls of the underframe, and a fluid is injected between the bulging portions. It is also possible to form an operating portion that bulges and rises, and mount the head member on the upper surface of the operating portion (claim 3). This configuration ensures repeated expansion / contraction of the airtight squamous body. Further, since the head member is arranged in the valley between the bulges, the machine height before the start of operation can be lowered.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基き説明する。図１は本発明にかかる扁平ジャッキＡ
の使用状態を示し、ピアＢ上に沓座部Ｃで支持された橋
桁Ｄを、扁平ジャッキＡで仮受けし、前記沓座部Ｃを補
修又は交換する状態である。その扁平ジャッキＡは、剛
性を有した金属材で構成した台枠１と、その台枠１内に
嵌合配置した気密性扁平嚢体２と、気密性扁平嚢体２の
上面に配置したヘッド部材３とで構成されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a flat jack A according to the present invention.
In this state, the bridge girder D supported by the gear seat C on the pier B is temporarily received by the flat jack A, and the gear seat C is repaired or replaced. The flat jack A includes an underframe 1 made of a metal material having rigidity, an airtight flat sac 2 fitted and arranged in the underframe 1, and a head placed on the upper surface of the airtight flat sac 2. And the member 3.
【００１０】台枠１は、底部１ａの前後縁にやや低め
（例えば、１００ｍｍ以下）の前後側壁１ｂ、１ｃが一
体に起立形成された、上面及び左右側面が開放された断
面コ字型に構成され、前記前後側壁１ｂ、１ｃで区画さ
れた底部１ａ上面に機密性扁平嚢体２が嵌合配置され
る。尚、本発明に係るジャッキの能力は、気密性扁平嚢
体２の断面積とその嚢体に注入する圧力で決定されるた
め、圧力を一定とした場合は、前記気密性扁平嚢体の断
面積がジャッキの能力を決定する。従って、台枠１の底
部１ａの大きさ（面積）は、形成しようとするジャッキ
の能力に応じて設定する。The underframe 1 has a U-shaped cross-section with an open upper surface and left and right side surfaces in which front and rear side walls 1b and 1c of slightly lower height (for example, 100 mm or less) are integrally formed upright on the front and rear edges of the bottom portion 1a. Then, the airtight flat pouch 2 is fitted and arranged on the upper surface of the bottom portion 1a defined by the front and rear side walls 1b and 1c. Since the capacity of the jack according to the present invention is determined by the cross-sectional area of the airtight flat sac 2 and the pressure injected into the sac, when the pressure is constant, the disconnection of the airtight flat sac is performed. The area determines the jack's ability. Therefore, the size (area) of the bottom portion 1a of the underframe 1 is set according to the ability of the jack to be formed.
【００１１】上記台枠１内に収容配置する気密性扁平嚢
体２は、耐圧性を備えた金属製平板、例えばスプリング
鋼を用い、前記台枠１における前後側壁１ｂ、１ｃ間の
幅に相当する帯板で環状の嚢体を構成する。その嚢体２
は、扁平の環状に構成し、その上側部分の左右両側部に
断面略半円状の膨出部４、４’を形成し、その膨出部
４、４’の間の谷部は流体の注入により膨出する作動部
５とし、その作動部５の上面にヘッド部材３が載置され
ている。又、前記の気密性扁平嚢体２は、前後の端縁に
シール材６のＯリングが取り付けられ、このシール材６
が台枠１の前後側壁１ｂ、１ｃと密着することで気密性
扁平嚢体２が完成される。そして、この気密性扁平嚢体
２における一方の膨出部４の外側面に流体を注入するポ
ート口７が取り付けられ、他方の膨出部４’の外側面に
はエアー抜きプラグ８が取り付けられている。The airtight flat sac 2 accommodated and arranged in the underframe 1 is made of a pressure-resistant metal flat plate, for example, spring steel, and corresponds to the width between the front and rear side walls 1b, 1c of the underframe 1. An annular sac is formed by the strip plate. Its sac 2
Is formed into a flat annular shape, and bulges 4 and 4'having a substantially semicircular cross section are formed on both left and right sides of the upper portion thereof, and the valley between the bulges 4 and 4'is The operating portion 5 is swollen by injection, and the head member 3 is placed on the upper surface of the operating portion 5. Further, the airtight flat sac 2 has O-rings of a sealing material 6 attached to front and rear edges thereof.
The airtight flat pouch 2 is completed by closely contacting the front and rear side walls 1b, 1c of the underframe 1. A port port 7 for injecting a fluid is attached to the outer side surface of one of the bulging portions 4 of the airtight flat bag 2, and an air vent plug 8 is attached to the outer side surface of the other bulging portion 4 '. ing.
【００１２】上記気密性扁平嚢体２の生産性を考慮した
具体的な構造としては、図５に示すように前記台枠１の
左右幅寸法に相当する長さを有した下側部材２ａと、上
側部材２ｂとに分割し、下側部材２ａの左右両側部は上
向きに折り曲げて連結部９を形成し、他方、上側部材２
ｂの左右両側部には略半円形状の湾曲部１０（膨出部
４、４’に相当する）を形成し、その湾曲部１０の端部
と前記下側部材２ａの連結部９の端部を突き合わせ接合
すると共に、同部を溶接して接合一体化する。そして、
この環状に構成した下側部材２ａと上側部材２ｂの連続
した溝に亘ってシール材６を取り付けることで完成す
る。As a concrete structure considering the productivity of the airtight flat pouch body 2, as shown in FIG. 5, a lower member 2a having a length corresponding to the lateral width of the underframe 1 is provided. , The upper member 2b, and the left and right side portions of the lower member 2a are bent upward to form a connecting portion 9, while the upper member 2
A substantially semicircular curved portion 10 (corresponding to the bulging portions 4 and 4 ') is formed on both left and right sides of b, and the end portion of the curved portion 10 and the end of the connecting portion 9 of the lower member 2a are formed. The parts are butt-joined and the parts are welded together to be integrated. And
This is completed by mounting the sealing material 6 across the continuous grooves of the lower member 2a and the upper member 2b which are formed in an annular shape.
【００１３】ヘッド部材３は、重量物を載承するためそ
の上面は平坦面に構成され、且つその厚さは作動前の状
態において台枠１の高さ（前後側壁の上端面）を超えな
い範囲とする。それにより、本ジャッキの最低機高は台
枠１の高さとなる。又、ヘッド部材３の上面には、滑り
止めの作用をなす溝１１が格子状に形成されている。図
中、１２は本扁平ジャッキＡを持ち運び運搬するのに使
用する把手で、台枠１の前後側壁１ｂ、１ｃの外側面に
２個ずつ固着されている。The head member 3 has a flat upper surface for supporting heavy objects, and its thickness does not exceed the height of the underframe 1 (upper end surfaces of the front and rear side walls) in a state before operation. Range. As a result, the minimum machine height of the jack is the height of the underframe 1. Further, on the upper surface of the head member 3, grooves 11 having a slip preventing function are formed in a lattice shape. In the figure, 12 is a handle used for carrying and carrying the flat jack A, and two handles are fixed to the outer surfaces of the front and rear side walls 1b, 1c of the underframe 1.
【００１４】上記の如く構成した扁平ジャッキＡは、気
密性扁平嚢体２に取り付けたポート口７に油圧ユニット
に接続されたホースを接続して圧油を供給することで、
前記気密性扁平嚢体２は膨出し、該気密性扁平嚢体２上
面に載置したヘッド部材３は上方に持ち上げられ台枠１
の前後側壁１ｂ，１ｃの上端面より突出して重量物の橋
桁Ｄに当接し、上方に持ち上げる。この気密性扁平嚢体
２の膨出は、該嚢体２の左右両側に予め膨出部４、４’
が湾曲形成され、その左右の膨出部４、４’間の谷部分
にヘッド部材３が配置されているため、膨張した気密性
扁平嚢体２は圧油を抜くことで元の状態にスムーズに復
帰する。それにより、本扁平ジャッキＡは、反復使用が
可能である。In the flat jack A constructed as described above, the hose connected to the hydraulic unit is connected to the port opening 7 attached to the airtight flat sac 2 to supply the pressure oil,
The airtight flat sac 2 bulges out, and the head member 3 placed on the upper surface of the airtight flat sac 2 is lifted upward to raise the underframe 1
The upper and lower side walls 1b and 1c of the vehicle are projected from the upper end surfaces of the front and rear side walls to contact the bridge girder D of the heavy object and lifted upward. The swelling of the airtight flat sac 2 is made by swelling portions 4 and 4'on the left and right sides of the sac 2 in advance.
Is curved and the head member 3 is arranged in the valley portion between the left and right bulging portions 4 and 4 ', so that the expanded airtight flat sac 2 is smoothed to the original state by removing the pressure oil. Return to. Therefore, the flat jack A can be repeatedly used.
【００１５】又、本扁平ジャッキの能力は、気密性扁平
嚢体２の断面積×注入圧力で決定される。従って、ジャ
ッキの能力を増大させる場合、気密性扁平嚢体２に注入
する圧力を一定とした場合は、気密性扁平嚢体２の断面
積を大きくすることで対応できる。因って、ジャッキの
最低機高は能力の大小に関係なく、一定に保つことが出
来る。言い換えると、従来の円筒型ジャッキでは製作が
不可能な機高のジャッキを容易に製作することが可能と
なる。しかも、気密性扁平嚢体の断面積を広く出来るこ
とで、ヘッド部材もそれに応じて断面積を大きくでき、
重量物の支持面を広く確保することが出来る。The capacity of the flat jack is determined by the cross-sectional area of the airtight flat sac 2 times the injection pressure. Therefore, in the case of increasing the ability of the jack, if the pressure to be injected into the airtight flat sac 2 is constant, it can be dealt with by increasing the cross-sectional area of the airtight flat sac 2. Therefore, the minimum height of the jack can be kept constant regardless of ability. In other words, it becomes possible to easily manufacture a jack of high height, which cannot be manufactured by the conventional cylindrical jack. Moreover, since the cross-sectional area of the airtight flat sac can be increased, the cross-sectional area of the head member can be increased accordingly,
A wide support surface for heavy objects can be secured.
【００１６】更に、気密性扁平嚢体２は、ヘッド部材３
に作用する外力により該嚢体２の上面はジャッキアップ
対象物の姿勢、形態に合わせて変形するため、前記ヘッ
ド部材３はユニバーサルヘッドと同様の作用をして重量
物を支持する（図６参照）。Further, the airtight flat sac 2 has a head member 3
Since the upper surface of the bladder 2 is deformed according to the posture and shape of the jack-up object by the external force acting on the head member 3, the head member 3 acts like a universal head to support a heavy object (see FIG. 6). ).
【００１７】又、気密性扁平嚢体２を膨張させる流体と
して、上記説明では油圧を使用する説明をしたが、使用
流体は油圧に限定されず、空気圧、その他の流体でも良
いものである。更に、気密性扁平嚢体２は単一材で構成
するものに限定されず、積層構造材で構成してもよいも
のである。また、前記ヘッド部材３は単体で構成した
が、複数のブロック（直方体、立方体等）の集合で構成
してもよく、そうした場合は、重量物におけるジャッキ
を当てる面が凹凸であるものに有効である。Further, as the fluid for inflating the airtight flat sac 2, the hydraulic pressure is used in the above description, but the fluid used is not limited to the hydraulic pressure and may be pneumatic pressure or other fluids. Furthermore, the airtight flat sac 2 is not limited to the one made of a single material, and may be made of a laminated structure material. Further, although the head member 3 is composed of a single body, it may be composed of a plurality of blocks (a rectangular parallelepiped, a cube, etc.). In such a case, it is effective for a surface of the heavy object to which the jack is to be uneven. is there.
【００１８】[0018]
【発明の効果】本発明の扁平ジャッキは請求項１、２記
載の構成により、同じ能力の従来の円筒型ジャッキに比
べて最低機高を低く構成することが出来る。しかも、重
量も軽く、コストも安価なジャッキを提供できる。ま
た、ジャッキの能力は気密性扁平嚢体の断面積と注入圧
力によって決定されるため、能力のアップは機高を変え
ずに気密性扁平嚢体の断面積を変えることで対応でき
る。因って、取り扱い性に優れたジャッキを提供でき
る。又、請求項３記載の構成により、気密性扁平嚢体の
膨張／収縮はスムーズに行なわれ、嚢体構造でありなが
ら反復使用が可能なジャッキを提供できる。従って、補
修用ジャッキとして幅広く活用することが出来るジャッ
キを提供できる。According to the flat jack of the present invention, the minimum height can be made lower than that of the conventional cylindrical jack having the same ability by virtue of the constitutions of claims 1 and 2. Moreover, it is possible to provide a jack that is light in weight and inexpensive in cost. Further, since the capacity of the jack is determined by the cross-sectional area of the airtight flat sac and the injection pressure, the increase in the capacity can be dealt with by changing the cross-sectional area of the airtight flat sac without changing the machine height. Therefore, a jack with excellent handleability can be provided. According to the third aspect of the present invention, the expansion / contraction of the airtight flat sac can be smoothly performed, and a jack which has a sac structure and can be repeatedly used can be provided. Therefore, a jack that can be widely used as a repair jack can be provided.
【図１】本発明に係る扁平ジャッキの使用状態を示す説
明図である。FIG. 1 is an explanatory view showing a usage state of a flat jack according to the present invention.
【図２】扁平ジャッキの断面図で、（ａ）は縦断正面
図、（ｂ）は（ａ）の（ｂ）−（ｂ）線に沿える縦断側
面図である。FIG. 2 is a cross-sectional view of a flat jack, (a) is a vertical sectional front view, and (b) is a vertical sectional side view taken along the line (b)-(b) of (a).
【図３】分解斜視図である。FIG. 3 is an exploded perspective view.
【図４】気密性扁平嚢体に圧油を供給して該嚢体を膨張
させた状態の断面図である。FIG. 4 is a cross-sectional view showing a state in which pressure oil is supplied to the airtight flat sac to expand the sac.
【図５】要部の拡大断面図である。FIG. 5 is an enlarged cross-sectional view of a main part.
【図６】ジャッキアップの使用例を示す説明図である。FIG. 6 is an explanatory diagram showing a usage example of a jack-up.
Ａ…扁平ジャッキ Ｂ…ピア Ｃ…沓座部 Ｄ…橋桁（重量物） １…台枠 ２…気密性扁平嚢体 ３…ヘッド部材 ６…シール材 A ... Flat jack B ... Pier C ... Shaft seat D ... Bridge girder (heavy load) 1 ... Underframe 2 ... Airtight flat sac 3 ... Head member 6 ... Sealing material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 滝井 良一 東京都足立区北加平町４番16号 大瀧ジャ ッキ株式会社内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Ryoichi Takai 4-16 Kitakahiracho, Adachi-ku, Tokyo Otakija In kk corporation
Claims (3)
体の注入により膨張する気密性扁平嚢体を収容配置し、
且つその気密性扁平嚢体の上面にヘッド部材を配置した
ことを特徴とする扁平ジャッキ。1. An airtight flat sac that is inflated by injecting a fluid is housed and arranged in an underframe that is rigid and has an open upper surface,
Further, a flat jack having a head member arranged on the upper surface of the airtight flat sac.
対の側壁が一体に起立形成され、他方気密性扁平嚢体は
耐圧可撓性を備えた鋼板で、前記台枠の側壁間に嵌合す
る環状に構成し、その環状嚢体の側壁と密着する開口端
にはシール材が取り付けられ、更に該気密性扁平嚢体に
流体注入用のポート口が設けられていることを特徴とす
る請求項１記載の扁平ジャッキ。2. In the underframe, at least a pair of side walls are integrally formed upright on the upper surface of the bottom part, while the airtight flat sac is a steel plate having pressure resistance flexibility, and is fitted between the side walls of the underframe. It is characterized in that it is configured in an annular shape to be mated, a sealing material is attached to the open end that is in close contact with the side wall of the annular sac, and the airtight flat sac is provided with a port port for fluid injection. The flat jack according to claim 1.
壁と交差する上面の両側に半円状の膨出部を予め屈曲形
成して、両膨出部間に流体の注入により膨らみ上昇する
作動部が形成され、その作動部の上面にヘッド部材が載
置されていることを特徴とする請求項２記載の扁平ジャ
ッキ。3. The airtight flat bag has a semicircular bulge formed in advance on both sides of an upper surface intersecting with a pair of side walls of an underframe, and a fluid is injected between the bulges. The flat jack according to claim 2, wherein an actuating portion that bulges and rises is formed, and a head member is placed on the upper surface of the actuating portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002093920A JP4039877B2 (en) | 2002-03-29 | 2002-03-29 | Flat jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002093920A JP4039877B2 (en) | 2002-03-29 | 2002-03-29 | Flat jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003285995A true JP2003285995A (en) | 2003-10-07 |
| JP4039877B2 JP4039877B2 (en) | 2008-01-30 |
Family
ID=29238161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002093920A Expired - Fee Related JP4039877B2 (en) | 2002-03-29 | 2002-03-29 | Flat jack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4039877B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005247499A (en) * | 2004-03-04 | 2005-09-15 | Ashimori Ind Co Ltd | Jack device |
| WO2015175606A1 (en) * | 2014-05-13 | 2015-11-19 | Firestone Industrial Products Company, Llc | Actuator flexible member with reaction feature |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011087616A1 (en) | 2011-12-02 | 2013-06-06 | Robert Bosch Gmbh | pin |
-
2002
- 2002-03-29 JP JP2002093920A patent/JP4039877B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005247499A (en) * | 2004-03-04 | 2005-09-15 | Ashimori Ind Co Ltd | Jack device |
| WO2015175606A1 (en) * | 2014-05-13 | 2015-11-19 | Firestone Industrial Products Company, Llc | Actuator flexible member with reaction feature |
| CN106471263A (en) * | 2014-05-13 | 2017-03-01 | 火石工业产品有限责任公司 | There is the Actuator Flex component of reaction characteristics structure |
| US10190606B2 (en) | 2014-05-13 | 2019-01-29 | Firestone Industrial Products Company, Llc | Actuator flexible member with reaction feature |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4039877B2 (en) | 2008-01-30 |
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