JP2017118946A - Chair for operator - Google Patents

Chair for operator Download PDF

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JP2017118946A
JP2017118946A JP2015256579A JP2015256579A JP2017118946A JP 2017118946 A JP2017118946 A JP 2017118946A JP 2015256579 A JP2015256579 A JP 2015256579A JP 2015256579 A JP2015256579 A JP 2015256579A JP 2017118946 A JP2017118946 A JP 2017118946A
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pedal
erroneous operation
chair
cover member
operator
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JP6690235B2 (en
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杉本　清
Kiyoshi Sugimoto
清 杉本
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Osada Electric Co Ltd
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Osada Electric Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a safe chair for operator preventing a seat part from being lowered unintentionally.SOLUTION: A chair for operator includes a gas cylinder 10 in a support post supporting a seat part and can adjust height of the seat part by extending/contracting the gas cylinder 10 by pressing down a lifting/lowering pedal 20. A cover member 30 for preventing erroneous operation is arranged so as to advance/retreat in an upper part of the pedal 20. When height of the seat part is adjusted, the cover member 30 for preventing erroneous operation is rotated, the cover member 30 for preventing erroneous operation is locked at a position enabling the pedal 20 to be operated, locking is, after height adjustment, released by flipping the pedal 20 up, and the cover 30 for preventing erroneous operation is rotated to a position covering an upper part of the pedal 20. Accordingly, the pedal 20 is prevented from being pressed down unintentionally during an operation.SELECTED DRAWING: Figure 4

Description

本発明は、術者用椅子に関し、詳しくは、昇降可能な術者用椅子の誤操作による座部の下降を防止した術者用椅子に関する。   The present invention relates to a surgeon chair, and more particularly, to a surgeon chair that prevents a seat portion from being lowered due to an erroneous operation of a surgeon chair that can be raised and lowered.

座部の高さ調整可能な椅子として、座部を支持する支柱部にガスシリンダ（あるいはガススプリング）を用い、ガスシリンダを座部の下方に設けた操作部を操作することにより行うものが知られている（例えば、特許文献１参照）。このような高さ調整可能な椅子は、操作部としてのレバーを手で操作することによって行うものが主流であるが、医科あるいは歯科に用いられる術者用椅子の場合、衛生面から手での操作を避けるため、ペダルを用いて足で操作するものが求められている。   As a chair that can adjust the height of a seat, a chair that uses a gas cylinder (or a gas spring) for a support column that supports the seat and operates a control unit provided with the gas cylinder below the seat is known. (For example, refer to Patent Document 1). Such height-adjustable chairs are mainly performed by operating the lever as an operation part by hand. In order to avoid operation, what is operated with a foot using a pedal is required.

特開２００５−１３６０２号公報JP-A-2005-13602

座部の高さ調整をペダルの押し下げ動作によって行う椅子は、着座していない状態でペダルを押し下げると、ガスシリンダに設けたプッシュバルブが押し込まれガスシリンダ内のオイルの移動が可能となり、内部に封入したガスの圧力によって座部が上昇するようになっており、また、着座した状態でペダルを押し下げると、同じくガスシリンダ内のオイルの移動が可能となるが、内部に封入したガスの圧力よりも利用者の体重と座部等の重量が大きくなるように設定されているため、座部が下降するようになっている。そして、ペダルを押し下げない場合は、ガスシリンダ内のオイルの移動が阻止されるため、座面の高さが調整後の高さに維持される。   If the seat is adjusted by depressing the pedal to adjust the seat height, the push valve provided on the gas cylinder will be pushed in when the pedal is pushed down, allowing the oil in the gas cylinder to move inside. The seat rises due to the pressure of the enclosed gas, and when the pedal is pushed down while seated, the oil in the gas cylinder can be moved, but the pressure of the gas enclosed inside Since the weight of the user and the weight of the seat and the like are set to be large, the seat is lowered. And when not depressing a pedal, since the movement of the oil in a gas cylinder is blocked | prevented, the height of a seat surface is maintained at the height after adjustment.

このため、診療中に術者が意図せずにペダルを押し下げてしまった場合には、座部が下降してしまい、術者を驚かせるだけでなく、治療機器で患者に怪我を負わせるケースがあった。   For this reason, if the surgeon unintentionally depresses the pedal during medical treatment, the seat will move down and not only surprise the surgeon but also injure the patient with the treatment device. was there.

本発明は、これらの実情に鑑みてなされたものであり、術者用椅子に昇降用のペダルが押し下げられるのを防止する誤操作防止機構を設け、さらに、この誤操作防止機構が自動的に機能するようにすることによって、術中に意図せずに座部が下降することがない安全な術者用椅子を提供することを、その目的とする。   The present invention has been made in view of these circumstances, and is provided with an erroneous operation preventing mechanism for preventing the lifting and lowering pedal from being pushed down on the operator's chair, and this erroneous operation preventing mechanism functions automatically. By doing so, it is an object of the present invention to provide a safe operator's chair that prevents a seat part from being unintentionally lowered during an operation.

上記課題を解決するために、請求項１の発明は、座部と、該座部を支持するガスシリンダと、該ガスシリンダを操作するためのペダルを備え、前記ペダルを押し下げることによって前記ガスシリンダの伸縮動作を可能にした術者用椅子であって、前記ペダルの上部に誤操作防止用カバー部材を進退可能に設けたことを特徴とするものである。   In order to solve the above-mentioned problem, the invention of claim 1 is provided with a seat portion, a gas cylinder that supports the seat portion, and a pedal for operating the gas cylinder, and the gas cylinder is depressed by depressing the pedal. A surgeon's chair that can be extended and retracted, wherein a cover member for preventing erroneous operation is provided on an upper portion of the pedal so as to be able to advance and retreat.

請求項２の発明は、請求項１の発明において、前記術者用椅子は複数の脚を有し、前記ペダルは複数の前記脚のうちの２本の前記脚の間に配置され、前記誤操作防止用カバー部材が、前記支柱部を中心に複数の前記脚の上部に設けた足置きの上部に沿って回動可能に設けられていることを特徴とするものである。   According to a second aspect of the present invention, in the first aspect of the invention, the operator chair has a plurality of legs, the pedal is disposed between two of the plurality of legs, and the erroneous operation is performed. The prevention cover member is provided so as to be rotatable along upper portions of footrests provided on upper portions of the plurality of legs around the support column.

請求項３の発明は、第１または第２の発明において、前記誤操作防止用カバー部材は、バネ部材によって前記ペダルの上部を覆う位置に静止するように付勢されていることを特徴とするものである。   According to a third aspect of the present invention, in the first or second aspect of the invention, the erroneous operation preventing cover member is biased by a spring member so as to rest at a position covering the upper portion of the pedal. It is.

請求項４の発明は、請求項３の発明において、前記ペダルの上部から離間した位置で前記誤操作防止用カバー部材をロックするロック機構を設けたことを特徴とするものである。   According to a fourth aspect of the present invention, in the third aspect of the present invention, a lock mechanism is provided for locking the erroneous operation preventing cover member at a position spaced from the upper portion of the pedal.

請求項５の発明は、請求項４の発明において、前記ペダルはバネ部材によって上方に付勢されており、押し下げ動作時に足を離すと静止位置よりも上側に跳ね上がり、前記ペダルの跳ね上がり動作によって前記ロック機構のロックが解除されることを特徴とするものである。   According to a fifth aspect of the present invention, in the invention of the fourth aspect, the pedal is biased upward by a spring member, and when the foot is released during the push-down operation, the pedal jumps upward from the resting position, and the pedal jumps up to The lock mechanism is unlocked.

本発明によれば、ペダルの誤操作防止用カバーを設けることにより、ペダルの操作後において、ペダルが押し下げられるのを防止でき、意図せずに座部が下降することがない安全な術者用椅子を提供することができる。   According to the present invention, by providing a cover for preventing an erroneous operation of the pedal, it is possible to prevent the pedal from being pushed down after the operation of the pedal, and a safe operator's chair that prevents the seat portion from being lowered unintentionally. Can be provided.

本発明が適用される術者用椅子を説明するための図である。It is a figure for demonstrating the chair for surgeons to which this invention is applied. 本発明の一実施形態に係る術者用椅子の主要部を示す図である。It is a figure which shows the principal part of the operator chair which concerns on one Embodiment of this invention. 図２に示す術者用椅子から誤操作防止用カバーを取り除いた場合を示す図である。It is a figure which shows the case where the cover for misoperation prevention is removed from the chair for operators shown in FIG. 図２に示す術者用椅子の誤操作防止用カバーがロックされた状態を示す図である。It is a figure which shows the state by which the cover for misoperation prevention of the operator chair shown in FIG. 2 was locked. 図２に示す術者用椅子を側面から見た図である。It is the figure which looked at the operator chair shown in FIG. 2 from the side. 図２に示す術者用椅子を底部から見た図である。It is the figure which looked at the operator's chair shown in FIG. 2 from the bottom part. 図２に示す術者用椅子の誤操作防止用カバーのロック機構の動作を説明するための模式図である。It is a schematic diagram for demonstrating operation | movement of the locking mechanism of the cover for incorrect operation prevention of the operator chair shown in FIG.

以下、図面を参照しながら、本発明の術者用椅子に係る好適な実施の形態について説明する。以下の説明において、異なる図面においても同じ符号を付した構成は同様のものであるとして、その説明を省略する場合がある。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of an operator chair according to the invention will be described with reference to the drawings. In the following description, the configurations denoted by the same reference numerals in different drawings are the same, and the description thereof may be omitted.

まず、本発明が適用される術者用椅子について説明する。図１は、本発明が適用される術者用椅子を示しており、本発明のペダルの誤操作防止用カバー部材を設けていない状態を示している。術者用椅子１は、座部２を有し、座部２は、支柱部となるガスシリンダ１０を介して、キャスタ１２付きの複数の脚１１に支持されている。また、座部２に対して支柱３を介して背当て４が取り付けられるとともに、座部２の左右両側に回動可能に支持された肘受５が設けられている。   First, an operator's chair to which the present invention is applied will be described. FIG. 1 shows a chair for an operator to which the present invention is applied, and shows a state where a cover member for preventing erroneous operation of the pedal of the present invention is not provided. The surgeon's chair 1 has a seat 2, and the seat 2 is supported by a plurality of legs 11 with casters 12 via a gas cylinder 10 serving as a support column. In addition, a backrest 4 is attached to the seat portion 2 via a support column 3, and elbow supports 5 are rotatably supported on the left and right sides of the seat portion 2.

脚１１の上部にはリング状の足置き１３が設けられ、２本の脚１１の間には、ガスシリンダ１０を操作するための昇降用のペダル２０が配置されている。このペダル２０を踏み込む（押し下げる）ことにより、ペダルを支持するアーム２１が回動し、ガスシリンダ１０の図示しないプッシュロッドが押し込まれる。これによって、ガスシリンダ１０内の制御弁が開放され、内部のオイルの移動が可能となって、ガスシリンダ１０の伸縮動作が行えるようになっている。このようなガスシリンダ１０の構成は周知のものであり、本発明の術者用椅子にも周知のガスシリンダを用いることができる。なお、ペダル２０は所定のストロークを踏み込んだ後に、ガスシリンダのプッシュロッドが押し込まれるように、適当な遊びを設けておくことが操作の上で望ましい。   A ring-shaped footrest 13 is provided on the upper part of the leg 11, and a lifting / lowering pedal 20 for operating the gas cylinder 10 is disposed between the two legs 11. By depressing (depressing) the pedal 20, the arm 21 supporting the pedal rotates, and a push rod (not shown) of the gas cylinder 10 is pushed. Thereby, the control valve in the gas cylinder 10 is opened, the internal oil can be moved, and the gas cylinder 10 can be expanded and contracted. Such a configuration of the gas cylinder 10 is well-known, and a well-known gas cylinder can be used for the operator's chair of the present invention. In addition, it is desirable in terms of operation that the pedal 20 is provided with an appropriate play so that the push rod of the gas cylinder is pushed in after a predetermined stroke is depressed.

また、ペダル２０を支持するアーム２１は図示しないバネ部材によって上方の静止位置に位置するように付勢されている。そして、ペダル２０に力を加えない場合にペダル２０は静止位置にあるが、ペダル２０を押し下げた位置から足を離すと、ペダル２０とアーム２１はバネ部材の反発力によって静止位置よりもさらに上方に跳ね上がり、その後、静止位置に戻るように構成されている。これは、アーム２１がペダル２０の静止位置よりも上方にまで移動できるようにしておくことによって達成できる。   Further, the arm 21 that supports the pedal 20 is biased so as to be positioned at an upper stationary position by a spring member (not shown). When no force is applied to the pedal 20, the pedal 20 is in a stationary position. However, when the foot is released from the position where the pedal 20 is pushed down, the pedal 20 and the arm 21 are further raised above the stationary position by the repulsive force of the spring member. It is configured to jump up and then return to the rest position. This can be achieved by allowing the arm 21 to move above the rest position of the pedal 20.

次に、本発明の誤操作防止用カバー部材とその進退機構について説明する。図２は、本発明の一実施形態に係る術者用椅子の主要部を示す図であり、ペダルが誤操作防止用カバー部材によって覆われている状態を示している。図２（Ａ）は斜視図であり、図２（Ｂ）は上部から見た図である。また、図３は、図２（Ｂ）から誤操作防止用カバーを取り除いた場合を示す図である。さらに、図４は、図２に示す術者用椅子の誤操作防止用カバーがロックされた状態を示す図であり、図４（Ａ）は斜視図であり、図４（Ｂ）は上部から見た図である。   Next, the cover member for preventing erroneous operation of the present invention and its advance / retreat mechanism will be described. FIG. 2 is a view showing a main part of the operator chair according to the embodiment of the present invention, and shows a state where the pedal is covered with a cover member for preventing erroneous operation. 2A is a perspective view, and FIG. 2B is a view from above. FIG. 3 is a diagram illustrating a case where the erroneous operation prevention cover is removed from FIG. Further, FIG. 4 is a view showing a state in which the cover for preventing erroneous operation of the operator chair shown in FIG. 2 is locked, FIG. 4 (A) is a perspective view, and FIG. 4 (B) is a view from above. It is a figure.

図２、図４に示すように、ペダル２０を覆うように、誤操作防止用カバー部材３０が進退可能に設けられている。本実施形態では、この誤操作防止用カバー部材３０は、支柱部となるガスシリンダ１０を挿通可能な貫通孔３４を術者用椅子１の中心部に有し、複数の脚１１の上部に設けた足置き１３の上部に沿って回動可能に設けられている。誤操作防止用カバー部材３０は板状の部分を有し、板状の部分が例えばねじりコイルばねからなる第１バネ部材６０によって、ペダル２０を覆う位置に付勢されている。また、誤操作防止用カバー部材３０の周辺部３３は円弧状に断面この字型に折り曲げられている。この字型に折り曲げられた底面が足置き１３と接する部分には、摩擦抵抗を少なくするための加工を施しておくとよい。   As shown in FIGS. 2 and 4, an erroneous operation preventing cover member 30 is provided so as to be able to advance and retract so as to cover the pedal 20. In the present embodiment, the erroneous operation prevention cover member 30 has a through hole 34 through which the gas cylinder 10 serving as a support column can be inserted in the center of the operator chair 1 and is provided on top of the plurality of legs 11. It is provided so as to be rotatable along the upper part of the footrest 13. The erroneous operation preventing cover member 30 has a plate-like portion, and the plate-like portion is biased to a position covering the pedal 20 by a first spring member 60 made of, for example, a torsion coil spring. Further, the peripheral portion 33 of the erroneous operation preventing cover member 30 is bent in an arc shape in cross section. It is preferable to perform a process for reducing the frictional resistance in a portion where the bottom surface bent in the shape of the character contacts the footrest 13.

誤操作防止用カバー部材３０の付勢方向の反対側には、誤操作防止用カバー部材３０をロックするための例えば板状のロック用板状部材４０が脚１１に対して固定されている。ロック用板状部材４０は誤操作防止用カバー部材３０よりも下側に重なるように設けられる。第１バネ部材６０の本体のコイル部分とその一端はロック用板状部材４０に支持されており、第１バネ部材６０の他端は誤操作防止用カバー部材３０に支持されている。このため、誤操作防止用カバー部材３０をロック用板状部材４０側に回動させる場合は、誤操作防止用カバー部材３０には、第１バネ部材６０によって静止位置に戻ろうとする力が加わる。   On the opposite side of the biasing direction of the erroneous operation preventing cover member 30, for example, a plate-like locking plate member 40 for locking the erroneous operation preventing cover member 30 is fixed to the leg 11. The locking plate-like member 40 is provided so as to overlap the lower side than the erroneous operation preventing cover member 30. The coil portion of the main body of the first spring member 60 and one end thereof are supported by the locking plate-like member 40, and the other end of the first spring member 60 is supported by the erroneous operation preventing cover member 30. Therefore, when the erroneous operation preventing cover member 30 is rotated to the locking plate-like member 40 side, the force for returning to the stationary position by the first spring member 60 is applied to the erroneous operation preventing cover member 30.

また、誤操作防止用カバー部材３０には案内ピン３２が下方に向けて植設されており、案内ピン３２がロック用板状部材４０に設けた円弧状のガイド孔４２内に挿入されている。これにより、誤操作防止用カバー部材３０の回動可能な角度範囲が規制される。誤操作防止用カバー部材３０の静止位置では、案内ピン３２がガイド孔４２のペダル２０側に当接し、第１バネ部材６０によって付勢された誤操作防止用カバー部材３０は、ペダル２０を覆う位置に静止するようになっている。   A guide pin 32 is planted downward in the erroneous operation preventing cover member 30, and the guide pin 32 is inserted into an arc-shaped guide hole 42 provided in the locking plate member 40. Thereby, the angle range in which the erroneous operation preventing cover member 30 is rotatable is restricted. In the stationary position of the erroneous operation preventing cover member 30, the guide pin 32 contacts the pedal 20 side of the guide hole 42, and the erroneous operation preventing cover member 30 biased by the first spring member 60 is in a position covering the pedal 20. It comes to rest.

ロック用板状部材４０には孔４１が設けられており、孔４１を通して後述する鉤状部材５７の先端部５７Ａが上方に突出できるようになっている。一方、誤操作防止用カバー部材３０の下面には係止片３１が設けられており、誤操作防止用カバー部材３０をロック用板状部材４０の方向（図１（Ａ）の矢印Ａ方向）に回動した際に、図４に示すように誤操作防止用カバー部材３０の係止片３１が鉤状部材５７の先端部５７Ａに引っ掛かり、誤操作防止用カバー部材３０がその位置でロックされるようになっている。誤操作防止用カバー部材３０に設けた係止片３１とロック用板状部材４０に設けた鉤状部材５７が、本発明のロック機構を構成する。   A hole 41 is provided in the locking plate-like member 40, and a distal end portion 57 </ b> A of a hook-like member 57 described later can project upward through the hole 41. On the other hand, a locking piece 31 is provided on the lower surface of the erroneous operation preventing cover member 30, and the erroneous operation preventing cover member 30 is rotated in the direction of the locking plate member 40 (the direction of arrow A in FIG. 1A). When moved, the locking piece 31 of the erroneous operation preventing cover member 30 is hooked on the distal end portion 57A of the hook-shaped member 57, and the erroneous operation preventing cover member 30 is locked at that position, as shown in FIG. ing. The locking piece 31 provided on the erroneous operation preventing cover member 30 and the hook-like member 57 provided on the locking plate-like member 40 constitute the locking mechanism of the present invention.

誤操作防止用カバー部材３０がロックされた状態では、図４（Ｂ）で示すように、ペダル２０が誤操作防止用カバー部材３０によって覆われず、術者はペダル２０を踏み込むことができる。また、誤操作防止用カバー部材３０の案内ピン３２は、ロック用板状部材４０に設けたガイド孔４２内のペダル２０から遠いに箇所に位置し、第１バネ部材６０は圧縮された状態となっている。   In the state where the erroneous operation preventing cover member 30 is locked, as shown in FIG. 4B, the pedal 20 is not covered by the erroneous operation preventing cover member 30, and the operator can step on the pedal 20. Further, the guide pin 32 of the cover member 30 for erroneous operation prevention is located at a location far from the pedal 20 in the guide hole 42 provided in the locking plate-like member 40, and the first spring member 60 is in a compressed state. ing.

なお、高さ調整用のペダル２０を誤操作防止用カバー部材３０で覆い、安全を確保しても、ペダル２０の操作後に誤操作防止用カバー部材３０を戻し忘れることで、安全が確保されないケースがある。このため、本実施形態では、操作後に自動的にペダル２０が誤操作防止用カバー部材３０で覆われるようにしている。すなわち、鉤状部材５７は、リンク機構によってペダル２０の所定の操作と連動して動作し、ペダル２０が跳ね上がることによって鉤状部材５７が動作し、誤操作防止用カバー部材３０に設けた係止片３１との係止状態が解除されるようになっている。以下、このリンク機構について説明する。図５は、図２に示す術者用椅子を側面から見た図であり、図６は、図２に示す術者用椅子を底部から見た図である。また、図７は、図２に示す術者用椅子の誤操作防止用カバーのロック機構の動作を説明するための模式図である。   Even if the height adjusting pedal 20 is covered with the erroneous operation preventing cover member 30 and safety is ensured, there is a case where safety is not ensured by forgetting to return the erroneous operation preventing cover member 30 after the pedal 20 is operated. . For this reason, in this embodiment, the pedal 20 is automatically covered with the cover member 30 for misoperation prevention after operation. In other words, the hook-like member 57 operates in conjunction with a predetermined operation of the pedal 20 by the link mechanism, and the hook-like member 57 operates when the pedal 20 jumps up, and the locking piece provided on the erroneous operation preventing cover member 30. The locked state with 31 is released. Hereinafter, this link mechanism will be described. 5 is a view of the operator chair shown in FIG. 2 as viewed from the side, and FIG. 6 is a view of the operator chair as shown in FIG. 2 as viewed from the bottom. FIG. 7 is a schematic diagram for explaining the operation of the locking mechanism for the erroneous operation preventing cover of the surgeon chair shown in FIG.

リンク機構は、アーム２１の動きに連動する第１リンク部材５１と、この第１リンク部材の動きに連動する第２リンク部材５４からなっている。第１リンク部材５１は、ロック用板状部材４０の下面に設けた第１支持部材５３の先端の軸５２に軸支された棒状の部材であり、その一端側の端部５１Ａがアーム２１の上部に載置され、他端側の端部５１Ｂが第２リンク部材５４の下側の略水平方向に延びる端部５４Ａ上に載置されている。第２リンク部材５４は、略Ｚ形状をしており、その中央部がロック用板状部材４０の下面に設けた第２支持部材５６の軸５５に軸支されている。   The link mechanism includes a first link member 51 that is interlocked with the movement of the arm 21 and a second link member 54 that is interlocked with the movement of the first link member. The first link member 51 is a rod-like member that is pivotally supported by the shaft 52 at the tip of the first support member 53 provided on the lower surface of the locking plate-like member 40, and an end 51 </ b> A on one end side of the first link member 51 is the arm 21. The other end 51B is placed on the upper end 54A that extends in the substantially horizontal direction below the second link member 54. The second link member 54 has a substantially Z shape, and a central portion thereof is pivotally supported by a shaft 55 of a second support member 56 provided on the lower surface of the locking plate member 40.

また、鉤状部材５７は、ロック用板状部材４０の下面に設けた第３支持部材５９の軸５８に軸支されており、その一端の先端部５７Ａは、ロック用板状部材４０に設けた孔４１を通してロック用板状部材４０の上方に突出できるようになっている。鉤状部材５７の先端部５７Ａと反対側の端部５７Ｂには、先端部５７Ａを上方に突出させる方向に付勢する第２バネ部材７０がロック用板状部材４０の下面との間に設けられている。さらに、鉤状部材５７の端部５７Ｂの第２バネ部材７０の反対側には、第２リンク部材５４の上側の略水平方向に延びる端部５４Ｂが当接している。   Further, the hook-like member 57 is pivotally supported by a shaft 58 of a third support member 59 provided on the lower surface of the locking plate-like member 40, and a tip portion 57 </ b> A at one end thereof is provided on the locking plate-like member 40. The locking plate-like member 40 can be protruded through the hole 41. A second spring member 70 is provided between the lower surface of the locking plate-like member 40 at the end portion 57B opposite to the front end portion 57A of the hook-like member 57 and biased in a direction in which the front end portion 57A protrudes upward. It has been. Further, an end portion 54 </ b> B extending in the substantially horizontal direction on the upper side of the second link member 54 is in contact with the opposite side of the end portion 57 </ b> B of the flange-shaped member 57 to the second spring member 70.

次に、術者用椅子１の操作について説明する。図７（Ａ）に示す状態は、ペダル２０が誤操作防止用カバー部材３０によって覆われており、術者が誤ってペダル２０を踏むことを防止している状態を示している。この状態から、術者が術者用椅子１の座部２の高さ調整を行おうとする場合、まず、誤操作防止用カバー部材３０をロック用板状部材４０側である矢印方向に靴裏などを利用して滑らせる。このため、誤操作防止用カバー部材３０の上面は、摩擦力を大きくするために滑り止めなどを施しておくとよい。   Next, the operation of the operator chair 1 will be described. The state shown in FIG. 7A shows a state in which the pedal 20 is covered with the erroneous operation preventing cover member 30 and the operator is prevented from stepping on the pedal 20 by mistake. From this state, when the surgeon intends to adjust the height of the seat 2 of the surgeon's chair 1, first, the erroneous operation prevention cover member 30 is placed in the direction of the arrow on the locking plate-like member 40 side, such as the shoe sole. Use to slide. For this reason, the upper surface of the erroneous operation preventing cover member 30 is preferably provided with anti-slip or the like in order to increase the frictional force.

誤操作防止用カバー部材３０がロック用板状部材４０側に移動すると、誤操作防止用カバー部材３０に設けた係止片３１が鉤状部材５７の先端部５７Ａに当接する。鉤状部材５７の先端部５７Ａのペダル２０側の面が傾斜面となうように構成されているため、誤操作防止用カバー部材３０がさらに移動すると、係止片３１が第２バネ部材７０の弾性力に抗して先端部５７Ａを下方に押し下げる。そして、係止片３１が先端部５７Ａを乗り越えると、鉤状部材５７の先端部５７Ａはロック用板状部材４０よりも上方に突出した位置に戻る。また、誤操作防止用カバー部材３０が、係止片３１が先端部５７Ａを乗り越えた位置から少し移動したところで、誤操作防止用カバー部材３０に設けた案内ピン３２がガイド孔４２の端部に当たるため、誤操作防止用カバー部材３０はそれ以上に回動することはできない。   When the erroneous operation preventing cover member 30 moves to the locking plate-like member 40 side, the locking piece 31 provided on the erroneous operation preventing cover member 30 comes into contact with the distal end portion 57 </ b> A of the hook-like member 57. Since the surface on the pedal 20 side of the distal end portion 57 </ b> A of the hook-shaped member 57 is configured to be an inclined surface, the locking piece 31 of the second spring member 70 is moved when the erroneous operation preventing cover member 30 is further moved. The tip 57A is pushed downward against the elastic force. When the locking piece 31 gets over the distal end portion 57A, the distal end portion 57A of the hook-like member 57 returns to a position protruding upward from the locking plate-like member 40. Further, when the erroneous operation preventing cover member 30 has moved a little from the position where the locking piece 31 has passed over the tip portion 57A, the guide pin 32 provided on the erroneous operation preventing cover member 30 hits the end of the guide hole 42. The erroneous operation preventing cover member 30 cannot be rotated further.

ここで、誤操作防止用カバー部材３０から足を離し、回動動作を終了すると、誤操作防止用カバー部材３０は第１バネ部材６０の弾性力によって戻ろうとする。しかし、鉤状部材５７の先端部５７Ａが第２バネ部材７０の弾性力によってロック用板状部材４０よりも上方に突出しているため、図７（Ｂ）に示すように、誤操作防止用カバー部材３０の係止片３１が鉤状部材５７の先端部５７Ａに係止され、誤操作防止用カバー部材３０がロックされる。このため、ペダル２０が露出した状態となり、術者がペダル２０を押し下げることが可能となる。   Here, when the foot is removed from the erroneous operation preventing cover member 30 and the rotation operation is finished, the erroneous operation preventing cover member 30 tries to return by the elastic force of the first spring member 60. However, since the front end portion 57A of the hook-like member 57 protrudes upward from the locking plate-like member 40 by the elastic force of the second spring member 70, as shown in FIG. The 30 locking pieces 31 are locked to the distal end portion 57A of the hook-shaped member 57, and the erroneous operation preventing cover member 30 is locked. For this reason, the pedal 20 is exposed, and the surgeon can depress the pedal 20.

この状態で、術者がペダル２０を押し下げると、アーム２１が押し下げられ、先述したように、ガスシリンダ１０のプッシュロッドが押し込まれ、ガスシリンダ１０内の制御弁が開放されてガスシリンダ１０の伸縮動作が行えるようになる。一方、図７（Ｂ）に示すように、ペダル２０を押し下げた際に、第１リンク部材５１のアーム２１は、反時計方向に回転しようとする。しかし、第１リンク部材５１の端部５１Ｂは第２リンク部材５４の下側の水平方向に延びる端部５４Ａの上に載置されているため、第１リンク部材５１の反時計方向の回動動作は第２リンク部材５４に伝わらない。このため、第１リンク部材５１、鉤状部材５７はペダル２０の押し下げ動作に関係なくその位置を保持したままとなり、誤操作防止用カバー部材３０のロック状態は維持される。   In this state, when the surgeon depresses the pedal 20, the arm 21 is depressed, and as described above, the push rod of the gas cylinder 10 is pushed in, the control valve in the gas cylinder 10 is opened, and the gas cylinder 10 expands and contracts. It becomes possible to operate. On the other hand, as shown in FIG. 7B, when the pedal 20 is pushed down, the arm 21 of the first link member 51 tends to rotate counterclockwise. However, since the end portion 51B of the first link member 51 is placed on the end portion 54A extending in the horizontal direction below the second link member 54, the first link member 51 rotates counterclockwise. The operation is not transmitted to the second link member 54. For this reason, the first link member 51 and the hook-like member 57 remain in their positions regardless of the push-down operation of the pedal 20, and the locked state of the erroneous operation preventing cover member 30 is maintained.

次に、術者が、座部２の高さ調整を終えて、ペダル２０を押し下げた状態から、足を離すと、ペダル２０は図示しないバネ部材の反発力によって跳ね上がろうとする。ペダル２０が静止位置を超えて戻る際には、ガスシリンダ１０のプッシュロッドは押し込まれた状態から復帰するため、ガスシリンダ１０は伸縮不能となり、調整した高さに座部２は維持される。   Next, when the operator finishes the height adjustment of the seat portion 2 and releases his / her foot from the state where the pedal 20 is pushed down, the pedal 20 tries to jump up by the repulsive force of a spring member (not shown). When the pedal 20 returns beyond the stationary position, the push rod of the gas cylinder 10 returns from the pushed-in state, so that the gas cylinder 10 cannot expand and contract, and the seat 2 is maintained at the adjusted height.

一方、ペダル２０が跳ね上がることによって、第１リンク部材５１は、図７（Ｃ）で示すように、軸５２を中心に時計方向に回動しようとする。第１リンク部材５１の第２リンク部材５４側の端部５１Ｂは、第２リンク部材５４の下側の端部５４Ａに載置されているため、第１リンク部材５１が時計方向に回動すると、第２リンク部材５４の一方の端部５４Ａを押し下げる。これによって、第２リンク部材５４は軸５５を中心に反時計方向に回動しようとする。そして、第２リンク部材５４の他方の端部５４Ｂ側に接する鉤状部材５７の端部５７Ｂを第２バネ部材７０に抗して押し上げようとする。   On the other hand, as the pedal 20 jumps up, the first link member 51 tends to rotate clockwise about the shaft 52 as shown in FIG. Since the end portion 51B on the second link member 54 side of the first link member 51 is placed on the lower end portion 54A of the second link member 54, when the first link member 51 rotates clockwise. Then, one end 54A of the second link member 54 is pushed down. As a result, the second link member 54 tries to rotate counterclockwise about the shaft 55. Then, the end portion 57B of the flange-shaped member 57 that is in contact with the other end portion 54B of the second link member 54 is pushed up against the second spring member 70.

そのため、鉤状部材５７は軸５８を中心に反時計方向に回動し、鉤状部材５７の先端部５７Ａがロック用板状部材４０の孔４１内に沈み込み、誤操作防止用カバー部材３０の係止片３１と鉤状部材５７の先端部５７Ａとの係止状態（ロック状態）が解除される。誤操作防止用カバー部材３０は、図７（Ｃ）のペダル２０側（矢印方向）に向けて回動し、図７（Ａ）に示す静止位置まで自動的に戻る。なお、第１バネ部材６０の強さは、誤操作防止用カバー部材３０が静止位置に戻る際に、ペダル２０に衝突しないように調整される。このように、本実施形態では、操作後に自動的にペダル２０が誤操作防止用カバー部材３０で覆われるようになっているため、意図しない、座部の下降を確実に防止できる。   Therefore, the hook-like member 57 rotates counterclockwise about the shaft 58, and the tip portion 57 </ b> A of the hook-like member 57 sinks into the hole 41 of the locking plate-like member 40. The locked state (locked state) between the locking piece 31 and the distal end portion 57A of the bowl-shaped member 57 is released. The erroneous operation preventing cover member 30 rotates toward the pedal 20 side (arrow direction) of FIG. 7C and automatically returns to the stationary position shown in FIG. Note that the strength of the first spring member 60 is adjusted so as not to collide with the pedal 20 when the erroneous operation preventing cover member 30 returns to the stationary position. Thus, in this embodiment, since the pedal 20 is automatically covered with the erroneous operation preventing cover member 30 after the operation, unintentional lowering of the seat portion can be reliably prevented.

１…術者用椅子、２…座部、３…支柱、４…背当て、５…肘受、１０…ガスシリンダ、１１…脚、１２…キャスタ、１３…足置き、２０…ペダル、２１…アーム、３０…誤操作防止用カバー部材、３１…係止片、３２…案内ピン、３３…周辺部、３４…貫通孔、４０…ロック用板状部材、４１…孔、４２…ガイド孔、５１…第１リンク部材、５１Ａ…端部、５１Ｂ…端部、５２…軸、５３…第１支持部材、５４…第２リンク部材、５４Ａ…端部、５４Ｂ…端部、５５…軸、５６…第２支持部材、５７…鉤状部材、５７Ａ…先端部、５７Ｂ…端部、５８…軸、５９…第３支持部材、
６０…第１バネ部材、７０…第２バネ部材。
DESCRIPTION OF SYMBOLS 1 ... Surgeon chair, 2 ... Seat part, 3 ... Post, 4 ... Backrest, 5 ... Elbow rest, 10 ... Gas cylinder, 11 ... Leg, 12 ... Caster, 13 ... Footrest, 20 ... Pedal, 21 ... Arm, 30 ... Cover member for preventing erroneous operation, 31 ... Locking piece, 32 ... Guide pin, 33 ... Peripheral part, 34 ... Through hole, 40 ... Plate member for locking, 41 ... Hole, 42 ... Guide hole, 51 ... First link member, 51A ... end, 51B ... end, 52 ... shaft, 53 ... first support member, 54 ... second link member, 54A ... end, 54B ... end, 55 ... shaft, 56 ... first 2 supporting members, 57... Bowl-shaped member, 57A... Tip portion, 57B... End portion, 58.
60 ... 1st spring member, 70 ... 2nd spring member.

Claims (5)

座部と、該座部を支持するガスシリンダと、該ガスシリンダを操作するためのペダルを備え、前記ペダルを押し下げることによって前記ガスシリンダの伸縮動作を可能にした術者用椅子であって、前記ペダルの上部に誤操作防止用カバー部材を進退可能に設けたことを特徴とする術者用椅子。   An operator's chair comprising a seat, a gas cylinder that supports the seat, and a pedal for operating the gas cylinder, and allowing the gas cylinder to expand and contract by depressing the pedal, An operator's chair, wherein an erroneous operation preventing cover member is provided on an upper portion of the pedal so as to be able to advance and retract. 前記術者用椅子は複数の脚を有し、前記ペダルは複数の前記脚のうちの２本の前記脚の間に配置され、前記誤操作防止用カバー部材が、前記支柱部を中心に複数の前記脚の上部に設けた足置きの上部に沿って回動可能に設けられていることを特徴とする請求項１に記載の術者用椅子。   The surgeon chair has a plurality of legs, the pedal is disposed between two of the plurality of legs, and the erroneous operation preventing cover member has a plurality of centers around the support column. The surgeon chair according to claim 1, wherein the surgeon chair is provided so as to be rotatable along an upper portion of a footrest provided on an upper portion of the leg. 前記誤操作防止用カバー部材は、前記ペダルの操作後には自動的に、バネ部材によって前記ペダルの上部を覆う位置に静止するように付勢されていることを特徴とする請求項１または２に記載の術者用椅子。   3. The erroneous operation preventing cover member is automatically biased by a spring member so as to rest at a position covering the upper portion of the pedal after the pedal is operated. Surgeon's chair. 前記ペダルの上部から離間した位置で前記誤操作防止用カバー部材をロックするロック機構を設けたことを特徴とする請求項３に記載の術者用椅子。   The operator's chair according to claim 3, wherein a lock mechanism for locking the erroneous operation preventing cover member is provided at a position separated from an upper portion of the pedal. 前記ペダルはバネ部材によって上方に付勢されており、押し下げ動作時に足を離すと静止位置よりも上側に跳ね上がり、前記ペダルの跳ね上がり動作によって前記ロック機構のロックが解除されることを特徴とする請求項４に記載の術者用椅子。
The pedal is biased upward by a spring member, and when the foot is released during the push-down operation, the pedal jumps upward from a stationary position, and the lock mechanism is unlocked by the pedal jump-up operation. Item 5. The surgeon chair according to Item 4.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020078443A (en) * 2018-11-13 2020-05-28 タカラベルモント株式会社 Chair for practitioner
JP2022535709A (en) * 2019-05-20 2022-08-10 恒林家居股▲ふん▼有限公司 Seat device and its star-shaped pedestal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020078443A (en) * 2018-11-13 2020-05-28 タカラベルモント株式会社 Chair for practitioner
JP7158019B2 (en) 2018-11-13 2022-10-21 タカラベルモント株式会社 practitioner chair
JP2022535709A (en) * 2019-05-20 2022-08-10 恒林家居股▲ふん▼有限公司 Seat device and its star-shaped pedestal

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