JP4616741B2 - Lifting table - Google Patents

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JP4616741B2
JP4616741B2 JP2005274842A JP2005274842A JP4616741B2 JP 4616741 B2 JP4616741 B2 JP 4616741B2 JP 2005274842 A JP2005274842 A JP 2005274842A JP 2005274842 A JP2005274842 A JP 2005274842A JP 4616741 B2 JP4616741 B2 JP 4616741B2
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movable part
gas spring
movable
upward
top plate
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JP2007082730A (en
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隆志 小村
隆志 金田
利蔵 今成
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株式会社コムラ製作所
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Description

本発明は、昇降テーブルに関するものである。   The present invention relates to a lifting table.

従来のベッド用サイドテーブル、あるいは、ベッド用オーバーベッドテーブル等として使用される昇降テーブルは、基台と、天板と、伸縮支脚と、この支脚内に収納されたロック機構付きのガススプリングと、を備え、天板側に取付けられた操作レバーを手動で操作することにより、ガススプリングのロック機構を解除して天板を昇降させていた。また、天板に上方向の力を加えた場合に天板が上方向に自由に上昇するように構成したものが知られている(例えば、特許文献1参照)。   A lifting table used as a conventional bed side table or a bed overbed table, etc. includes a base, a top plate, telescopic support legs, a gas spring with a lock mechanism housed in the support legs, By manually operating an operation lever attached to the top plate side, the lock mechanism of the gas spring is released to raise and lower the top plate. In addition, there is known a configuration in which the top plate freely rises upward when an upward force is applied to the top plate (see, for example, Patent Document 1).

特許文献1に記載の従来の昇降テーブルに使用されるロック機能付のガススプリングは、シリンダ部の内周面に摺動自在に配設した隔壁(摺動部材)によって、シリンダ部内の基端側(末端)に高圧ガスを封入してガス室を構成すると共に、摺動部材の先端側にオイル室を構成し、このオイル室内に、ピストンを、オイル室を二分するように進退可能に装着する。ピストンにはロッド部が連結され、このロッド部がシリンダ部から先端側に突設する。かつ、ピストンは、二分されたオイル室を連通する極めて狭小なオイル流路(オリフィス)を有する。そして、ピストン及びロッド部には、先端基端方向に挿通孔が形成されると共に、この挿通孔に、オイル流路を開閉する開閉弁を基端に有する操作軸がスライド自在に挿入されている。そして、天板側に取付けた上記操作レバーを操作して、操作軸をピストン及びロッド部の挿通孔内を上下進退させることで、開閉弁を開閉作動させる。これにより、二分されたオイル室を連通するオイル流路(オリフィス)を連通状態と遮断状態に切換えていた。即ち、上記ロッド部を昇降可能状態と、ロック状態に切換えるためのオイル遮断式ロック機構を備えていた。
特許第2778683号公報
The gas spring with a lock function used in the conventional lifting table described in Patent Document 1 is a base end side in the cylinder portion by a partition wall (sliding member) slidably disposed on the inner peripheral surface of the cylinder portion. A gas chamber is formed by sealing high-pressure gas at the (terminal), and an oil chamber is formed on the tip side of the sliding member. A piston is mounted in the oil chamber so as to be able to advance and retreat so as to bisect the oil chamber . A rod portion is connected to the piston, and this rod portion projects from the cylinder portion toward the tip side. The piston has a very narrow oil passage (orifice) communicating with the oil chamber divided into two. An insertion hole is formed in the piston and the rod portion in the proximal direction of the distal end, and an operation shaft having an opening / closing valve for opening and closing the oil flow path is slidably inserted into the insertion hole. . Then, the on / off valve is opened / closed by operating the operating lever attached to the top plate side and moving the operating shaft up and down in the insertion hole of the piston and the rod portion. As a result, the oil flow path (orifice) communicating with the divided oil chamber is switched between the communication state and the shut-off state. That is, an oil shut-off type lock mechanism for switching the rod portion between a vertically movable state and a locked state is provided.
Japanese Patent No. 2778683

ところが、従来のこのようなオイル遮断式ロック機能を有するガススプリングでは、オイルがピストン部の極めて狭小なオイル流路(オリフィス)を通過し、そのオイルの粘性抵抗により、高速スピードでの伸長が困難であり、そのため、起伏式ベッド又は昇降ベッドのサイドテーブルやオーバーベッドテーブルとして使用した場合、ベッド床部の上昇時にその一部が天板の下面に干渉して、天板を押し上げるとき、その上昇スピードが大きいと、ロック機能付ガススプリングを支持脚に有する天板はその上昇スピードに追随できず、昇降テーブルが転倒したり、天板が破損するという問題があった。
しかも、オイル遮断式ロック機能を備えたガススプリングは、上述した隔壁、ピストン部、オイル室等を必要とする構造であるので、(同一取付長に対して)十分なストロークを確保することが難しいという問題もあった。特に、ロック機能付ガススプリングは、上述の構造であるので、ガス室の容量が少なくなり、封入されるガス容量が少なくなり、伸長に伴って急に弾発力が減少するという欠点があった。従って、昇降テーブルの天板に対して上方向の一定の弾発力を付与する上で問題があった。
また、オイル流路(オリフィス)の開閉弁と極めて細い操作軸は、頻繁な開閉作動にて故障を生ずる原因にもなっていた。
However, in the conventional gas spring having such an oil shut-off lock function, the oil passes through an extremely narrow oil passage (orifice) of the piston portion, and it is difficult to extend at high speed due to the viscous resistance of the oil. Therefore, when it is used as a side table or overbed table of an undulating bed or a lift bed, when the bed floor is raised, a part of it interferes with the lower surface of the top plate, and when the top plate is pushed up, the rise When the speed is high, the top plate having the gas spring with a lock function on the support leg cannot follow the rising speed, and there is a problem that the elevating table falls or the top plate is damaged.
In addition, since the gas spring having the oil shut-off lock function has a structure that requires the above-described partition wall, piston portion, oil chamber, etc., it is difficult to ensure a sufficient stroke (for the same mounting length). There was also a problem. In particular, since the gas spring with a lock function has the above-described structure, the capacity of the gas chamber is reduced, the capacity of the enclosed gas is reduced, and the elasticity is suddenly reduced as it expands. . Therefore, there is a problem in applying a certain upward elastic force to the top plate of the lifting table.
In addition, the on-off valve of the oil passage (orifice) and the extremely thin operating shaft have also caused failures due to frequent opening and closing operations.

そこで、本発明は、天板の下面側に上方向の力が加わった際に、天板をスムーズに上昇させる(上方向に逃がす)ことができる安全性の高い昇降テーブルを提供することを目的とする。
また、天板の昇降のストロークを十分に確保することができ、さらに、長期間繰り返しの使用に対し、昇降のロック・解除の機能を故障なく維持できる(耐久性に優れた)昇降テーブルを提供することを、他の目的とする。
Accordingly, an object of the present invention is to provide a highly safe lifting table that can smoothly lift (release upward) the top plate when an upward force is applied to the lower surface side of the top plate. And
In addition, a lifting table that can secure a sufficient lifting stroke for the top plate and that can maintain the lifting lock and release function without failure for long-term repeated use (excellent durability) is provided. To do other purposes.

上記の目的を達成するために、本発明に係る昇降テーブルは、基台を有する静止部と、天板を有する可動部と、該静止部と該可動部との間に介在して該可動部に上方向への押上力を付勢するガススプリングと、を備え、該ガススプリングはオイル遮断式ロック機構を有さない非ロック構造とし、かつ、該静止部と該可動部との間に、該可動部の下方への移動を機械的にロックすると共に該可動部の上方への移動が自由な機械式ロック機構を、上記ガススプリングとは独立状に、設けたものである。   In order to achieve the above object, a lifting table according to the present invention includes a stationary part having a base, a movable part having a top plate, and the movable part interposed between the stationary part and the movable part. A gas spring that urges an upward pushing force to the gas spring, the gas spring has a non-locking structure that does not have an oil shut-off locking mechanism, and between the stationary part and the movable part, A mechanical lock mechanism that mechanically locks the downward movement of the movable part and freely moves upward of the movable part is provided independently of the gas spring.

また、上記機械式ロック機構は、上記静止部に立設された芯部材と、上記可動部に下向きに取付けられると共に該芯部材に間隙をもって外嵌する筒部材と、複数のリンクをピンで屈曲自在に連結して成り下端が上記筒部材の内側に止着されると共に通常時は複数の該リンクがジグザグ状となりかつ複数の該ピンが上記芯部材を側方から交互に挟んで該筒部材の下方移動をロックするチェーン部材と、を有し、さらに、該チェーン部材の上端に取付けられ、該チェーン部材の上端を押し下げかつ上記ピンによる上記芯部材に対する挟持を緩めて該チェーン部材のロックを解除するためのロック解除部材を、備えている。   Further, the mechanical lock mechanism includes a core member standing on the stationary part, a cylindrical member attached downward to the movable part and fitted around the core member with a gap, and a plurality of links bent with pins. The lower end is fixedly connected to the inside of the cylindrical member, and the plurality of links are zigzag-shaped in a normal state, and the plurality of pins alternately sandwich the core member from the side. A chain member that locks the downward movement of the chain member, and is attached to the upper end of the chain member, and pushes down the upper end of the chain member and loosens the pin by the pin to lock the chain member. An unlocking member for releasing is provided.

本発明は、次のような著大な効果を奏する。
本発明に係る昇降テーブルは、基台を有する静止部と、天板を有する可動部との間に、可動部に上方向への押上力を付勢するガススプリングを設けると共に、可動部の下方への移動をロックすると共に可動部の上方への移動が自由な機械式ロック機構を、ガススプリングとは独立状に設けたものであり、ガススプリングがオイル遮断式ロック機構を有さない非ロック構造なので、ガススプリングが(オイル遮断式ロック機構に一般に用いられる)オイルの粘性抵抗を受けることがなく、ガススプリングのロッド部の上昇が非常にスムーズである。よって、例えば、昇降ベッドの側柵が天板取付部の下面に上方向の力を加える場合に、可動部が上方向へ自由に逃げることができ、転倒や故障の虞れがなく、安全である。
また、ガススプリングが(オイル遮断式ロック機構に用いられる)ピストンやオイル室等を具備しないので、ロッド部の十分なストロークを確保でき、可動部の可動幅が大きくなる。しかも、高圧ガスを十分な量だけ封入できるので、可動部がいずれの高さにあっても、可動部に略一定の押上力を与えることができ、バランスが良い。
また、ガススプリングは、複雑な構造のオイル遮断式ロック機構を具備していないので、長期間の繰り返しの使用にも耐久性を有する。
特に、ガススプリングとしては、オイル遮断式ロック機構の内蔵されたものでは、ガススプリングの特性として長期放置時の初期作動荷重が大きかった。よって、ガススプリングがオイル遮断式ロック機構を有さないことで、長期放置時の初期作動荷重の軽減を図ることができ、迅速かつ確実にロックの解除が可能であり、使い勝手が良好で、特に、身体障害者にとって望ましい昇降テーブルであるといえる。
また、ロック解除部材により、容易にロック機構のロックを解除できるので、可動部の高さ調整が容易である。
The present invention has the following remarkable effects.
The lifting table according to the present invention is provided with a gas spring for urging upward force on the movable part between the stationary part having the base and the movable part having the top plate, and below the movable part. A mechanical lock mechanism that locks the movement of the movable part and allows the movable part to move upward is provided independently of the gas spring, and the gas spring does not have an oil shut-off lock mechanism. Due to the structure, the gas spring is not subjected to the viscous resistance of oil (commonly used in an oil shut-off lock mechanism), and the ascending of the rod portion of the gas spring is very smooth. Therefore, for example, when the side fence of the lift bed applies an upward force to the lower surface of the top plate mounting part, the movable part can freely escape upward, there is no risk of falling or malfunctioning, and it is safe. is there.
Further, since the gas spring does not include a piston, an oil chamber, or the like (used in an oil shut-off lock mechanism), a sufficient stroke of the rod portion can be secured, and the movable width of the movable portion is increased. In addition, since a sufficient amount of high-pressure gas can be sealed, a substantially constant push-up force can be applied to the movable part regardless of the height of the movable part, and the balance is good.
In addition, since the gas spring does not include an oil shut-off lock mechanism having a complicated structure, the gas spring has durability even when used for a long period of time.
In particular, the gas spring with a built-in oil shut-off lock mechanism has a large initial operating load when left for a long time as a characteristic of the gas spring. Therefore, since the gas spring does not have an oil shut-off lock mechanism, it is possible to reduce the initial operating load when left for a long period of time, and it is possible to release the lock quickly and reliably. It can be said that it is a desirable lifting table for the physically handicapped.
Moreover, since the lock of the lock mechanism can be easily released by the lock release member, the height of the movable part can be easily adjusted.

以下、実施の形態を示す図面に基づき、本発明を詳説する。
図1〜図7は、本発明に係る昇降テーブルの実施の一形態を示し、この昇降テーブルは、基台4を有する静止部5と、天板6を有する可動部7と、静止部5と可動部7との間に介在して可動部7に上方向への押上力を付勢するガススプリング8と、を備えている。この昇降テーブルは、例えば(病院用の)昇降ベッド40に側面から差し入れてベッドサイドテーブルとして利用される。
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
FIGS. 1-7 shows one Embodiment of the raising / lowering table which concerns on this invention, This raising / lowering table has the stationary part 5 which has the base 4, the movable part 7 which has the top plate 6, the stationary part 5, And a gas spring 8 interposed between the movable portion 7 and urging the movable portion 7 with an upward pushing force. This lifting table is used as a bedside table by being inserted into a lifting bed 40 (for hospitals) from the side, for example.

可動部7は、昇降テーブルで昇降可能となる部位をいい、天板6と、天板6を支持する天板取付部28と、天板取付部28の下面に突設される外筒支柱部29と、を有する。
静止部5は、昇降テーブルのうち昇降せずに静止した部位をいい、車輪を有する基台4と、基台4の上面に突設される内筒支柱部30と、を有する。内筒支柱部30に外筒支柱部29が外嵌されており、外筒支柱部29(可動部7)が内筒支柱部30(静止部5)にて確実に上下方向にガイドされる。
The movable portion 7 refers to a portion that can be lifted and lowered by a lifting table. The top plate 6, the top plate mounting portion 28 that supports the top plate 6, and the outer cylinder column portion that projects from the lower surface of the top plate mounting portion 28. 29.
The stationary part 5 refers to a part of the lifting table that is stationary without being raised or lowered, and includes a base 4 having wheels and an inner cylindrical column part 30 protruding from the upper surface of the base 4. An outer cylinder column part 29 is fitted on the inner cylinder column part 30, and the outer cylinder column part 29 (movable part 7) is reliably guided in the vertical direction by the inner cylinder column part 30 (stationary part 5).

ガススプリング8は、オイル遮断式ロック機構を有さない非ロック構造であり、シリンダ部10内に、高圧ガスが封入されたものである。ロッド部9(及び摺動部材)は、高圧ガスの圧力により、先端側へ突出する方向へ付勢される。
このガススプリング8は、内筒支柱部30内に装着される。即ち、ガススプリング8のシリンダ部10の基端が、天板取付部28の下面に孔・突部結合等で固定されると共に、ロッド部9の先端が、基台4の上面に取付けられた保持部材にボルト・ナット結合44にて固着される。
The gas spring 8 has a non-locking structure that does not have an oil shut-off locking mechanism, and a high-pressure gas is sealed in the cylinder portion 10. The rod portion 9 (and the sliding member) is urged in a direction protruding toward the distal end side by the pressure of the high pressure gas.
The gas spring 8 is mounted in the inner cylinder column part 30. That is, the base end of the cylinder portion 10 of the gas spring 8 is fixed to the lower surface of the top plate mounting portion 28 by a hole / projection coupling or the like, and the tip end of the rod portion 9 is attached to the upper surface of the base 4. It is fixed to the holding member with a bolt / nut coupling 44.

また、静止部5と可動部7との間に、可動部7の下方への移動を機械的にロックすると共に可動部7の上方への移動が自由な機械式ロック機構1が、ガススプリング8とは独立状に、設けられている。機械式ロック機構1は、内筒支柱部30内に装着され、内筒支柱部30内でガススプリング8に隣接して平行に設けられる。なお、本発明に於て、機械式とは、上述のオイル(流体)を用いた方式、及び、電気を用いた方式を除外したものをいう。
具体的には、ロック機構1は、静止部5の基台4の上面に立設された芯部材11と、可動部7に下向きに取付けられると共に芯部材11に間隙をもって外嵌する筒部材12と、複数のリンク13をピン14で屈曲自在に連結して成り下端15aが筒部材12の内側に止着されると共に通常時は複数のリンク13がジグザグ状となりかつ複数のピン14が芯部材11を側方から交互に挟んで筒部材12の下方移動をロックするチェーン部材15と、を有する。筒部材12は円筒や角筒形状を有すると共に、その下部の内周面に、チェーン部材15の下端15aを揺動自在に止着する保持部22が固着されている。具体的には、保持部22は、最下端のピン14が横側から嵌合され回転自在に保持して外れ止めされる凹溝を有する小ブロック体から成る(図4,図5参照)。
芯部材11は丸棒とする。また、チェーン部材15については、各ピン(ローラ)14…は、芯部材11の円柱状外周面に沿って当接可能として、中央部位が弯曲状に凹むように形成される。また、リンク13…は、各ピン14を、その両端側で繋いでおり、ピン14を挟んで平行である。つまり、2列の平行な、リンク13…の連繋体と、ピン14とが、芯部材11を側方から挟む(図6参照)。なお、芯部材11を角棒とし、ピン14をストレートな外形としても自由である(図示省略)。
Further, a mechanical lock mechanism 1 that mechanically locks the downward movement of the movable part 7 and freely moves upward of the movable part 7 between the stationary part 5 and the movable part 7 is provided with a gas spring 8. Are provided independently of each other. The mechanical lock mechanism 1 is mounted in the inner cylinder column 30 and is provided in parallel with the gas spring 8 in the inner cylinder column 30. In the present invention, the term “mechanical” refers to a system that excludes the above-described system using oil (fluid) and the system using electricity.
Specifically, the lock mechanism 1 includes a core member 11 erected on the upper surface of the base 4 of the stationary portion 5, and a cylindrical member 12 that is attached downward to the movable portion 7 and that is externally fitted to the core member 11 with a gap. The lower end 15a is fixed to the inside of the cylindrical member 12, and the plurality of links 13 are zigzag and the plurality of pins 14 are core members. And a chain member 15 that locks the downward movement of the cylindrical member 12 by alternately sandwiching 11 from the side. The cylindrical member 12 has a cylindrical or square cylindrical shape, and a holding portion 22 that fixes the lower end 15a of the chain member 15 so as to be swingable is fixed to an inner peripheral surface of the cylindrical member 12 below. Specifically, the holding portion 22 is formed of a small block body having a concave groove in which the pin 14 at the lowermost end is fitted from the lateral side and is rotatably held and prevented from coming off (see FIGS. 4 and 5).
The core member 11 is a round bar. Further, with respect to the chain member 15, each pin (roller) 14 is formed so that the central portion is concavely bent so that it can be brought into contact with the cylindrical outer peripheral surface of the core member 11. Further, the links 13... Connect the pins 14 at both ends thereof and are parallel with the pins 14 interposed therebetween. That is, two rows of parallel links 13 and the pin 14 sandwich the core member 11 from the side (see FIG. 6). The core member 11 may be a square bar and the pin 14 may be a straight outer shape (not shown).

さらに、昇降テーブルは、チェーン部材15の上端15bに取付けられ、チェーン部材15の上端15bを押し下げかつピン14による芯部材11に対する挟持を緩めてチェーン部材15のロックを解除するためのロック解除部材2を、備えている。
具体的には、ロック解除部材2は、筒部材12の上部にスライド自在に外嵌されたスライド外嵌筒体19と、筒部材12の上部に形成された一対の縦長挿通窓部16,16に通されると共に両端がスライド外嵌筒体19に固着された横杆17と、筒部材12内にて横杆17の中間部とチェーン部材15の上端15bとを連結する縦杆18と、基端部21aがスライド外嵌筒体19の上端縁に当接するハンドル部材21と、を有する。ハンドル部材21は、その中間部が天板取付部28に枢結され、一端部に把持部を有する。また、ハンドル部材21の基端部21aは、平面視コの字状(図7参照)やU字状等の二股の挟持部が形成され、この挟持部が、筒部材12を挟むと共にスライド外嵌筒体19の上端縁に当接するように、配設される。
Further, the lifting table is attached to the upper end 15b of the chain member 15. The unlocking member 2 is used to release the lock of the chain member 15 by pushing down the upper end 15b of the chain member 15 and loosening the pin 14 to the core member 11. Is provided.
Specifically, the unlocking member 2 includes a slide outer fitting cylinder 19 that is slidably fitted on the upper portion of the cylindrical member 12, and a pair of vertically long insertion windows 16, 16 formed on the upper portion of the cylindrical member 12. , And a vertical rod 18 that connects the intermediate portion of the horizontal rod 17 and the upper end 15b of the chain member 15 within the cylindrical member 12, The base end portion 21a includes a handle member 21 that abuts against the upper end edge of the slide external fitting cylinder 19. The handle member 21 has an intermediate portion pivotally connected to the top plate mounting portion 28 and a grip portion at one end. Further, the proximal end portion 21a of the handle member 21 is formed with a bifurcated sandwiching portion such as a U-shape in plan view (see FIG. 7) or a U-shape, and the sandwiching portion sandwiches the cylindrical member 12 and slides outside. It arrange | positions so that the upper end edge of the fitting cylinder 19 may be contact | abutted.

また、スライド外嵌筒体19が、筒部材12に対し上方向への弾発付勢力を(図示省略の)コイルバネ等により受けており、通常時は、スライド外嵌筒体19及びハンドル部材21の基端の挟持部が、上方向に付勢されている。これにより、チェーン部材15の上端15bが上方へ引き上げられるので、通常時は、チェーン部材15のリンク13…が、そのジグザグ度合いが小さくなる方向に伸びて、複数のピン14…が芯部材11を側方から交互に挟むので、筒部材12の下方移動が機械的に(摩擦抵抗力により)ロックされる。
ガススプリング8の上方向の押上力は、(何も載置されていない状態の)可動部7の荷重よりも僅かに小さく設定されており、通常使用時に可動部7が不意に上昇することがなく、かつ、可動部7に上方向の力が加えられると、スムーズに上昇する。
Further, the slide outer fitting cylinder 19 receives an upward elastic biasing force with respect to the cylinder member 12 by a coil spring (not shown) or the like, and normally the slide outer fitting cylinder 19 and the handle member 21 are used. The clamping part of the base end of this is biased upward. As a result, the upper end 15b of the chain member 15 is pulled upward, so that the link 13 ... of the chain member 15 extends in a direction in which the zigzag degree decreases, and the plurality of pins 14 ... Since it is sandwiched alternately from the side, the downward movement of the cylindrical member 12 is mechanically locked (by frictional resistance).
The upward push-up force of the gas spring 8 is set slightly smaller than the load of the movable part 7 (when nothing is placed), and the movable part 7 may unexpectedly rise during normal use. If there is no force and an upward force is applied to the movable part 7, it rises smoothly.

次に、図8,図9は本発明に係る昇降テーブルの他の実施の形態を示し、図1〜図7の昇降テーブルとは、機械式ロック機構1、及び、ロック解除部材2の構造において相違する。
具体的には、図8,図9に示した昇降テーブルの機械式ロック機構1は、静止部5に立設された上方開口状の円筒体23と、円筒体23の底部に立設された芯部材11と、(図1〜図7のものと同様の)筒部材12及びチェーン部材15と、を有する。筒部材12の下端部には、円筒体23の内周面に摺接すると共にチェーン部材15の下端15aが止着される略円筒状のチェーン固定部材24が取付けられる。
また、ロック解除部材2は、筒部材12の内周面に摺接すると共に芯部材11にスライド自在に外嵌されチェーン部材15の上端15bに止着されるロック解除筒体26と、ロック解除筒体26に上向きに取付けられ筒部材12内に空隙をもって配設されると共に芯部材11に空隙をもって外嵌する内筒体25と、棒部材から成り内筒体25の上部を横方向に貫通すると共に両端が筒部材12の挿通窓部16,16から突出しかつ該筒部材12の外周面に相互に反対方向に巻設した引掛部材27と、引掛部材27に上側から当接するハンドル部材21と、を有する。ハンドル部材21は、図1〜図7のものと同様のものでよい。31は、筒部材12・引掛部材27に包囲状に外嵌するカバー部材である。32は、筒部材12の内側に配設され、筒部材12の上部の内周面と内筒体25の上端を連結し内筒体25を筒部材12に対し上方へ弾発付勢するための引っ張りコイルバネである。
また、図示省略するが、図1〜図7にて既述した外筒支柱部29・内筒支柱部30が設けられる。
Next, FIGS. 8 and 9 show another embodiment of the lifting table according to the present invention. The lifting table of FIGS. 1 to 7 is the structure of the mechanical lock mechanism 1 and the unlocking member 2. Is different.
Specifically, the lifting table mechanical lock mechanism 1 shown in FIGS. 8 and 9 is provided with an upwardly open cylindrical body 23 standing on the stationary part 5 and on the bottom of the cylindrical body 23. It has a core member 11 and a cylindrical member 12 and a chain member 15 (similar to those shown in FIGS. 1 to 7). A substantially cylindrical chain fixing member 24 that is in sliding contact with the inner peripheral surface of the cylindrical body 23 and to which the lower end 15a of the chain member 15 is fixed is attached to the lower end portion of the cylindrical member 12.
Further, the unlocking member 2 is in sliding contact with the inner peripheral surface of the cylindrical member 12, and is externally slidably fitted to the core member 11 and fixed to the upper end 15b of the chain member 15, and an unlocking cylinder. An inner cylinder 25 that is mounted upward on the body 26 and is disposed with a gap in the cylindrical member 12 and that is fitted around the core member 11 with a gap, and a bar member that penetrates the upper portion of the inner cylinder 25 in the lateral direction. And a hook member 27 projecting from both ends of the cylindrical member 12 through the insertion windows 16 and 16 and wound around the outer peripheral surface of the cylindrical member 12 in opposite directions, and a handle member 21 contacting the hook member 27 from above, Have The handle member 21 may be the same as that shown in FIGS. Reference numeral 31 denotes a cover member that is fitted around the cylindrical member 12 and the hooking member 27 in a surrounding manner. 32 is disposed inside the cylindrical member 12, and connects the inner peripheral surface of the upper part of the cylindrical member 12 and the upper end of the inner cylindrical body 25 to elastically urge the inner cylindrical body 25 upward with respect to the cylindrical member 12. This is a tension coil spring.
Although not shown, the outer cylinder support 29 and the inner cylinder support 30 described above with reference to FIGS. 1 to 7 are provided.

次に、本発明に係る昇降テーブルの作用(使用方法)について説明する。
先ず、図1〜図7に示した昇降テーブルについて説明する。通常時には、図1,図4に示したように、スライド外嵌筒体19及びハンドル部材21の基端の挟持部が、上方向に付勢されていて、チェーン部材15の上端15bが上方へ引き上げられるので、チェーン部材15のリンク13…が、そのジグザグ度合いが小さくなる方向に伸びて、複数のピン14…が芯部材11を側方から挟み、筒部材12の下方移動が摩擦抵抗にて止められロックされる。よって、可動部7(筒部材12)に下方への力が加えられても、チェーン部材15は、その下端15aが下方へ引っ張られて伸びようとして、ピン14…が芯部材11に一層強く圧接して、確実にロックされる。
次いで、可動部7の位置を下げる場合には、ハンドル部材21の握り部を手で矢印35のように上方向に操作すると、図5に示したように、ハンドル部材21の基端部21aがスライド外嵌筒体19の上端縁を押下げて、該筒体19が下方へスライドするので、それに伴って、横杆17,縦杆18を介して、チェーン部材15の上端15bが押し下げられる。すると、チェーン部材15のジグザグ度合いが大きくなり、交互に配設されたピン14…と芯部材11との間に隙間が形成される。つまり、ピン14…による芯部材11に対する挟持が緩められて、チェーン部材15によるロック状態が解除されるので、図2,図3に於て、ハンドル部材21を握ったまま(上方向に操作したまま)、ガススプリング8の押上力に抗って可動部7に矢印36のような下方へ力を加えると、可動部7を押し下げることができる。そして、所望の高さまで押し下げたら、ハンドル部材21から手を離して操作を止める。そうすれば、既述したように、スライド外嵌筒体19が、筒部材12に対して上方向への弾発付勢力を(図示省略のコイルバネ等により)受けて、図4に示したように、上方向に付勢されて、チェーン部材15の上端15bが上方へ引っ張られて、チェーン部材15により、筒部材12の下方移動がロックされる。
Next, an operation (usage method) of the lifting table according to the present invention will be described.
First, the elevating table shown in FIGS. 1 to 7 will be described. As shown in FIGS. 1 and 4, the holding portion of the proximal end of the slide outer fitting cylinder 19 and the handle member 21 is urged upward, and the upper end 15 b of the chain member 15 is upward. Since the link 13 of the chain member 15 extends in a direction in which the zigzag degree decreases, the plurality of pins 14 sandwich the core member 11 from the side, and the downward movement of the cylindrical member 12 is caused by frictional resistance. Stopped and locked. Therefore, even if a downward force is applied to the movable portion 7 (cylinder member 12), the chain member 15 tends to be extended by the lower end 15a being pulled downward, so that the pins 14 are more strongly pressed against the core member 11. And is securely locked.
Next, when the position of the movable portion 7 is lowered, if the grip portion of the handle member 21 is operated upward as indicated by an arrow 35 by hand, the base end portion 21a of the handle member 21 is moved as shown in FIG. The upper end edge of the slide outer fitting cylinder 19 is pushed down, and the cylinder 19 slides downward. Accordingly, the upper end 15b of the chain member 15 is pushed down via the horizontal rod 17 and the vertical rod 18. Then, the zigzag degree of the chain member 15 increases, and a gap is formed between the alternately arranged pins 14 and the core member 11. That is, the pin 14... Is loosened with respect to the core member 11 and the locked state by the chain member 15 is released. Therefore, in FIG. 2 and FIG. 3, the handle member 21 is held (operated upward). If the force is applied to the movable part 7 downward as indicated by the arrow 36 against the pushing force of the gas spring 8, the movable part 7 can be pushed down. Then, when pushed down to a desired height, the handle member 21 is released and the operation is stopped. Then, as described above, the slide external fitting cylinder 19 receives an upward elastic biasing force (by a coil spring or the like not shown) with respect to the cylinder member 12, as shown in FIG. Further, the upper end 15b of the chain member 15 is pulled upward, and the upper end 15b of the chain member 15 is pulled upward, and the downward movement of the cylindrical member 12 is locked by the chain member 15.

次に、図8,図9に示した昇降テーブルの作用(使用方法)について説明する。通常時には、図8に示したように、内筒体25がコイルバネ32により上方向に付勢されていて、チェーン部材15のリンク13…が、そのジグザグ度合いが小さくなる方向に伸びて、複数のピン14…が芯部材11を側方から挟み、筒部材12の下方移動が摩擦抵抗にて止められロックされる。よって、可動部7(筒部材12)に下方への力が加えられても、チェーン部材15は、その下端15aが下方へ引っ張られて伸びようとして、ピン14…が芯部材11に一層強く圧接して、確実にロックされる。
次いで、可動部7の位置を下げる場合には、ハンドル部材21の操作により、引掛部材27を筒部材12に対して押下げると、ロック解除筒体26が下方へスライドして、チェーン部材15の上端15bが押し下げられる。すると、チェーン部材15のジグザグ度合いが大きくなり、ピン14…による芯部材11に対する挟持が緩められて、チェーン部材15によるロック状態が解除されて、可動部7を押し下げることができる。そして、所望の高さまで押し下げたら、ハンドル部材21から手を離して操作を止めれば、チェーン部材15により、筒部材12の下方移動がロックされる。
Next, the operation (usage method) of the lifting table shown in FIGS. 8 and 9 will be described. Normally, as shown in FIG. 8, the inner cylinder 25 is urged upward by the coil spring 32, and the links 13 of the chain member 15 extend in a direction in which the zigzag degree decreases, The pins 14 sandwich the core member 11 from the side, and the downward movement of the cylindrical member 12 is stopped and locked by frictional resistance. Therefore, even if a downward force is applied to the movable portion 7 (cylinder member 12), the chain member 15 tends to be extended by the lower end 15a being pulled downward, so that the pins 14 are more strongly pressed against the core member 11. And is securely locked.
Next, when lowering the position of the movable portion 7, when the hook member 27 is pushed down with respect to the cylindrical member 12 by operating the handle member 21, the unlocking cylinder 26 slides downward, and the chain member 15 The upper end 15b is pushed down. Then, the zigzag degree of the chain member 15 is increased, the pin 14... Is loosened against the core member 11, the locked state by the chain member 15 is released, and the movable part 7 can be pushed down. When the operation is stopped by releasing the hand from the handle member 21 after being pushed down to a desired height, the downward movement of the cylindrical member 12 is locked by the chain member 15.

次に、図1,図4に於て、昇降ベッド40の床面の上昇により、側柵が昇降テーブルの天板取付部28の下面に上方向の力を加える場合について説明する。天板取付部28、即ち、可動部7に上方向の力が加わると、筒部材12が上昇し、チェーン部材15の下端15aを押し上げて、ロック状態が緩む。よって、可動部7は、ガススプリング8から上方向への押上力を受けて、スムーズに上昇して、上方向に自由に逃げる。   Next, in FIG. 1 and FIG. 4, a case will be described in which the side fence applies an upward force to the lower surface of the top plate mounting portion 28 of the lifting table due to the rising of the floor surface of the lifting bed 40. When an upward force is applied to the top plate mounting portion 28, that is, the movable portion 7, the cylindrical member 12 is raised, the lower end 15a of the chain member 15 is pushed up, and the locked state is loosened. Therefore, the movable part 7 receives the upward force from the gas spring 8 and rises smoothly and freely escapes upward.

また、図1,図4に於て、可動部7の天板6の一部を把持して上方向に力を加えると、筒部材12が上昇して、チェーン部材15の下端15aが押し上げられる。すると、芯部材11に圧接した状態であったチェーン部材15のピン14…によるロック状態が解除され、緩む。よって、可動部7は、ガススプリング8から上方向への押上力を受けて、スムーズに上昇する。   1 and 4, when a part of the top plate 6 of the movable portion 7 is gripped and a force is applied in the upward direction, the cylindrical member 12 is raised and the lower end 15a of the chain member 15 is pushed up. . Then, the locked state by the pins 14 of the chain member 15 that has been in pressure contact with the core member 11 is released and loosened. Therefore, the movable part 7 receives the upward force from the gas spring 8 and rises smoothly.

ここで、上述した特許文献1にて既述した昇降テーブル(以下、「文献1」とする)と、本発明の昇降テーブル(以下、「本発明」とする)とを比較する。
先ず、文献1は、シリンダ部内にオイルが封入されており、オイルの粘性抵抗を受けるので、ピストンの作動がスムーズでなく、その結果、天板の昇降の動きが遅い。一方、本発明は、ロック用のオイルを有していないので、ロッド部9の昇降が非常にスムーズであり、昇降ベッド40の側柵が天板取付部28の下面に上方向の力を加える場合でも、可動部7は、スムーズに(高スピードに)上昇する。即ち、天板6が上方向へ高スピードで逃げることができ、転倒等の虞れがなく、安全である。
また、文献1のガススプリングは、オイル室、ピストン等が大きなスペースをとるため、上下方向に十分なストロークを確保することが困難であり、結果として、天板の昇降ストロークを十分にとるのが難しい。しかも、ガス室の容量が小さくなり、高圧ガスの量が少ないので、ロッド部のシリンダ部からの突出長さが大きくなるほど、押し出す力が弱くなり、天板が高い位置になるほど、上方向へ押し上げる力が弱くなってしまう。これに対し、本発明は、ガススプリング8が十分なストロークを確保できるので、可動部7の可動幅が大きくなる。しかも、高圧ガスが十分に封入されており、可動部7がどの高さにあっても略一定の押上力を受けるので、天板6上の荷重等に対して、いずれの高さにおいてもバランスが良い。
また、文献1のガススプリングが長く使用されると、オイル流路を開閉する開閉弁が故障してオイル流路を完全に塞ぐことができなくなってロック機能が低下する虞がある。これに対し、本発明のガススプリング8は、このような構造を有しておらず、長く使用されても、故障を起こしにくい。
特に、ガススプリング8としては、オイル遮断式ロック機構の内蔵されたものでは、ガススプリングの特性として長期放置時の初期作動荷重が大きかった。よって、ガススプリング8がロック機構を有さないことで、長期放置時の初期作動荷重の軽減を図ることができ、迅速かつ確実にロックの解除が可能であり、使い勝手が良好で、特に、身体障害者にとって望ましい昇降テーブルであるといえる。
Here, the lift table described in Patent Document 1 (hereinafter referred to as “Document 1”) and the lift table of the present invention (hereinafter referred to as “present invention”) are compared.
First, in Document 1, since oil is sealed in the cylinder part and receives the viscous resistance of the oil, the operation of the piston is not smooth, and as a result, the top plate moves up and down slowly. On the other hand, since the present invention does not have oil for locking, the rod portion 9 can be moved up and down very smoothly, and the side fence of the lift bed 40 applies an upward force to the lower surface of the top plate mounting portion 28. Even in this case, the movable part 7 rises smoothly (high speed). That is, the top plate 6 can escape at high speed in the upward direction, and there is no fear of falling or the like, which is safe.
Further, the gas spring of Document 1 has a large space for the oil chamber, the piston, and the like, so that it is difficult to secure a sufficient stroke in the vertical direction. difficult. In addition, since the capacity of the gas chamber is reduced and the amount of high-pressure gas is small, the push-out force becomes weaker as the protruding length of the rod part from the cylinder part becomes larger, and the pusher is pushed upwards as the top plate becomes higher. Power is weakened. On the other hand, since the gas spring 8 can ensure a sufficient stroke in the present invention, the movable width of the movable portion 7 is increased. Moreover, since the high pressure gas is sufficiently sealed and the movable part 7 receives a substantially constant pushing force regardless of the height, it is balanced against the load on the top plate 6 at any height. Is good.
Further, if the gas spring of Document 1 is used for a long time, the on-off valve that opens and closes the oil flow path may fail, and the oil flow path cannot be completely blocked, and the lock function may be reduced. On the other hand, the gas spring 8 of the present invention does not have such a structure, and even if it is used for a long time, it does not easily cause a failure.
In particular, as the gas spring 8, when the oil shut-off lock mechanism is built in, the initial operating load when left for a long time is large as a characteristic of the gas spring. Therefore, since the gas spring 8 does not have a locking mechanism, it is possible to reduce the initial operating load when left for a long period of time, and it is possible to release the lock quickly and reliably, and it is easy to use. It can be said that it is a desirable lifting table for people with disabilities.

なお、本発明は上述の実施の形態に限定されず、設計変更自由であって、支持脚を左右に有するオーバーベッドテーブルとしたり、ベッドと関係なく使われる昇降テーブルとすることも、自由である。   In addition, this invention is not limited to the above-mentioned embodiment, The design change is free, and it is also possible to use an overbed table having support legs on the left and right sides, or a lift table used regardless of the bed. .

以上のように、本発明に係る昇降テーブルは、基台4を有する静止部5と、天板6を有する可動部7と、静止部5と可動部7との間に介在して可動部7に上方向への押上力を付勢するガススプリング8と、を備え、ガススプリング8はオイル遮断式ロック機構を有さない非ロック構造とし、かつ、静止部5と可動部7との間に、可動部7の下方への移動を機械的にロックすると共に可動部7の上方への移動が自由な機械式ロック機構1を、ガススプリング8とは独立状に、設けたものなので、ガススプリング8が(ロック機構に一般に用いられる)オイルの粘性抵抗を受けることがなく、ガススプリング8のロッド部9の上昇が非常にスムーズである。よって、例えば、昇降ベッド40の側柵が天板取付部28の下面に上方向の力を加える場合に、可動部7が上方向へ自由に逃げることができ、転倒等の虞れがなく、安全である。
また、ガススプリング8が(ロック機構に一般に具備される)ピストンやオイル室等を具備しないので、ロッド部9の十分なストロークを確保でき、可動部7の可動幅が大きくなる。しかも、高圧ガスを十分な量だけ封入できるので、可動部7がいずれの高さにあっても、可動部に略一定の押上力を与えることができ、バランスが良い。
また、ガススプリング8は、複雑な構造のロック機構を具備していないので、長期間の繰り返しの使用にも耐久性を有する。
特に、ガススプリング8としては、オイル遮断式ロック機構の内蔵されたものでは、ガススプリングの特性として長期放置時の初期作動荷重が大きかった。よって、ガススプリング8がオイル遮断式ロック機構を有さないことで、長期放置時の初期作動荷重の軽減を図ることができ、迅速かつ確実にロックの解除が可能であり、使い勝手が良好で、特に、身体障害者にとって望ましい昇降テーブルであるといえる。
As described above, the lifting table according to the present invention has the stationary part 5 having the base 4, the movable part 7 having the top plate 6, and the movable part 7 interposed between the stationary part 5 and the movable part 7. And a gas spring 8 that urges the upward pushing force, and the gas spring 8 has a non-locking structure that does not have an oil-blocking lock mechanism, and is interposed between the stationary part 5 and the movable part 7. Since the mechanical lock mechanism 1 that mechanically locks the downward movement of the movable part 7 and freely moves upward of the movable part 7 is provided independently of the gas spring 8, the gas spring 8 does not receive the viscous resistance of oil (commonly used in a lock mechanism), and the ascending of the rod portion 9 of the gas spring 8 is very smooth. Therefore, for example, when the side fence of the lift bed 40 applies an upward force to the lower surface of the top plate mounting portion 28, the movable portion 7 can freely escape upward, and there is no fear of falling, It is safe.
Further, since the gas spring 8 does not include a piston or an oil chamber (generally provided in the lock mechanism), a sufficient stroke of the rod portion 9 can be ensured, and the movable width of the movable portion 7 is increased. In addition, since a sufficient amount of high-pressure gas can be sealed, a substantially constant push-up force can be applied to the movable part regardless of the height of the movable part 7, and the balance is good.
Further, since the gas spring 8 does not include a lock mechanism having a complicated structure, the gas spring 8 is durable even for repeated use over a long period of time.
In particular, as the gas spring 8, when the oil shut-off lock mechanism is built in, the initial operating load when left for a long time is large as a characteristic of the gas spring. Therefore, since the gas spring 8 does not have an oil shut-off type locking mechanism, it is possible to reduce the initial operating load when left for a long period of time, and it is possible to release the lock quickly and reliably, and the usability is good. In particular, it can be said that it is a desirable lifting table for the physically handicapped.

また、機械式ロック機構1は、静止部5に立設された芯部材11と、可動部7に下向きに取付けられると共に芯部材11に間隙をもって外嵌する筒部材12と、複数のリンク13をピン14で屈曲自在に連結して成り下端15aが筒部材12の内側に止着されると共に通常時は複数のリンク13がジグザグ状となりかつ複数のピン14が芯部材11を側方から交互に挟んで筒部材12の下方移動をロックするチェーン部材15と、を有し、さらに、チェーン部材15の上端15bに取付けられ、チェーン部材15の上端15bを押し下げかつピン14による芯部材11に対する挟持を緩めてチェーン部材15のロックを解除するためのロック解除部材2を、備えているので、可動部7に下向きの力が加わると、チェーン部材15のジグザグ度合いが小さくなり、ピン14…が芯部材11を強固に挟み付けるので、筒部材12の下方移動が強固にロックされる。よって、可動部7は、使用中に、上に物が載せられたり、可動体7自体の荷重によって下方向の力を受けても、不意に下がることがない。
また、可動部7の下面が上方への力を受けると、ピン14による芯部材11の挟持が緩んでロック状態が解除される。よって、例えば、近接させた昇降ベッドの床面が上昇してその側柵が可動部7の下面に上方向の力を加える場合でも、ロックが解除されると共に、可動部7は、スムーズ(高スピード)に上昇して、上方向に逃げるので、昇降テーブルが転倒する等の虞れがない。
また、可動部7の位置を下げたい場合には、ロック解除部材2を操作することで、チェーン部材15の上部15bを押し下げてジグザグ度合いを大きくすれば、チェーン部材15による芯部材11へのロックが容易に解除されるので、ガススプリング8の押上力に抗って可動部7に下方へ力を加えることで、可動部7を押し下げることができる。
可動部7の位置を上げたい場合には、手で、可動部7に上方向の力を加えれば、チェーン部材15のピン14によるロックが解除されるので、可動部7を容易に上昇させることができる。よって、可動部7の高さ調整が容易である。
The mechanical lock mechanism 1 includes a core member 11 erected on the stationary portion 5, a cylindrical member 12 that is attached downward to the movable portion 7 and that is fitted around the core member 11 with a gap, and a plurality of links 13. The lower end 15a is fixed to the inner side of the cylindrical member 12 by being flexibly connected by the pins 14, and in a normal state, the plurality of links 13 are zigzag-shaped, and the plurality of pins 14 alternate the core members 11 from the side. A chain member 15 that locks the downward movement of the cylindrical member 12 and is attached to the upper end 15b of the chain member 15, and pushes down the upper end 15b of the chain member 15 and holds the core member 11 by the pin 14 Since the lock release member 2 for releasing the lock of the chain member 15 by loosening is provided, when a downward force is applied to the movable portion 7, the zigzag degree of the chain member 15 becomes small, and the pin 14 ... 11 is firmly clamped In, downward movement of the tubular member 12 is locked firmly. Therefore, the movable portion 7 does not drop unexpectedly even when an object is placed on the movable portion 7 or a downward force is applied by the load of the movable body 7 itself during use.
Further, when the lower surface of the movable portion 7 receives an upward force, the pin member 14 is loosely held by the pin 14 and the locked state is released. Therefore, for example, even when the floor surface of the lift bed brought close up rises and the side fence applies an upward force to the lower surface of the movable portion 7, the lock is released and the movable portion 7 is smooth (high Speed) and escape upward, there is no fear of the elevator table falling over.
Further, when the position of the movable portion 7 is to be lowered, the lock member 2 is operated so that the upper portion 15b of the chain member 15 is pushed down to increase the degree of zigzag, thereby locking the core member 11 by the chain member 15 Therefore, the movable part 7 can be pushed down by applying a downward force to the movable part 7 against the push-up force of the gas spring 8.
When the position of the movable part 7 is to be raised, if the upward force is applied to the movable part 7 by hand, the lock of the chain member 15 by the pin 14 is released, so that the movable part 7 can be easily raised. Can do. Therefore, the height adjustment of the movable part 7 is easy.

本発明に係る昇降テーブルの実施の一形態を示す正面図である。It is a front view which shows one Embodiment of the raising / lowering table which concerns on this invention. 説明用要部正面図である。It is a principal part front view for description. 説明用側面図である。It is a side view for description. 説明用要部一部断面正面図である。It is a principal part partial cross section front view for description. 説明用要部一部断面正面図である。It is a principal part partial cross section front view for description. 要部一部断面平面図である。It is a principal part partial cross-sectional top view. 要部断面平面図である。It is a principal part sectional top view. 本発明に係る昇降テーブルの他の実施の形態を示す要部一部断面正面図である。It is a principal part partial cross section front view which shows other embodiment of the raising / lowering table which concerns on this invention. 要部一部断面平面図である。It is a principal part partial cross-sectional top view.

符号の説明Explanation of symbols

1 ロック機構
2 ロック解除部材
4 基台
5 静止部
6 天板
7 可動部
8 ガススプリング
11 芯部材
12 筒部材
13 リンク
14 ピン
15 チェーン部材
15a 下端
15b 上端
DESCRIPTION OF SYMBOLS 1 Locking mechanism 2 Lock release member 4 Base 5 Static part 6 Top plate 7 Movable part 8 Gas spring
11 Core material
12 Tube member
13 links
14 pin
15 Chain member
15a Bottom
15b Upper end

Claims (2)

基台(4)を有する静止部(5)と、天板(6)を有する可動部(7)と、該静止部(5)と該可動部(7)との間に介在して該可動部(7)に上方向への押上力を付勢するガススプリング(8)と、を備えた昇降テーブルに於て、
該ガススプリング(8)はオイル遮断式ロック機構を有さない非ロック構造とし、かつ、該静止部(5)と該可動部(7)との間に、該可動部(7)の下方への移動を機械的にロックすると共に該可動部(7)の上方への移動が自由な機械式ロック機構(1)を、上記ガススプリング(8)とは独立状に、設けたことを特徴とする昇降テーブル。
A movable part (5) having a base (4), a movable part (7) having a top plate (6), and the movable part (5) interposed between the stationary part (5) and the movable part (7). In a lifting table provided with a gas spring (8) for urging the upward pushing force on the part (7),
The gas spring (8) has a non-locking structure that does not have an oil shut-off locking mechanism, and is located below the movable part (7) between the stationary part (5) and the movable part (7). A mechanical locking mechanism (1) that mechanically locks the movement of the movable portion (7) and freely moves upward of the movable portion (7) is provided independently of the gas spring (8). Lifting table.
上記機械式ロック機構(1)は、上記静止部(5)に立設された芯部材(11)と、上記可動部(7)に下向きに取付けられると共に該芯部材(11)に間隙をもって外嵌する筒部材(12)と、複数のリンク(13)をピン(14)で屈曲自在に連結して成り下端(15a)が上記筒部材(12)の内側に止着されると共に通常時は複数の該リンク(13)がジグザグ状となりかつ複数の該ピン(14)が上記芯部材(11)を側方から交互に挟んで該筒部材(12)の下方移動をロックするチェーン部材(15)と、を有し、
さらに、該チェーン部材(15)の上端(15b)に取付けられ、該チェーン部材(15)の上端(15b)を押し下げかつ上記ピン(14)による上記芯部材(11)に対する挟持を緩めて該チェーン部材(15)のロックを解除するためのロック解除部材(2)を、備えた請求項1記載の昇降テーブル。
The mechanical lock mechanism (1) is attached downward to the core member (11) standing on the stationary part (5) and the movable part (7), and is externally attached to the core member (11) with a gap. A fitting cylinder member (12) and a plurality of links (13) are connected by a pin (14) so as to be bent, and the lower end (15a) is fixed to the inside of the cylinder member (12) and at normal times. A plurality of the links (13) are zigzag-shaped, and a plurality of the pins (14) alternately hold the core member (11) from the side to lock the downward movement of the cylindrical member (12) (15 ) And
Furthermore, the chain member (15) is attached to the upper end (15b), the upper end (15b) of the chain member (15) is pushed down, and the pin (14) is loosely held by the core member (11), and the chain member (15) The lifting table according to claim 1, further comprising: an unlocking member (2) for unlocking the member (15).
JP2005274842A 2005-09-22 2005-09-22 Lifting table Active JP4616741B2 (en)

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JP4616741B2 true JP4616741B2 (en) 2011-01-19

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039713U (en) * 1989-06-15 1991-01-30
JP2001292834A (en) * 2000-04-17 2001-10-23 Komura Seisakusho:Kk Vertically movable table
JP2002248019A (en) * 2001-02-26 2002-09-03 Osamu Matsutani Multipurpose wooden table

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039713U (en) * 1989-06-15 1991-01-30
JP2001292834A (en) * 2000-04-17 2001-10-23 Komura Seisakusho:Kk Vertically movable table
JP2002248019A (en) * 2001-02-26 2002-09-03 Osamu Matsutani Multipurpose wooden table

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