JP7195905B2 - clamping device - Google Patents

clamping device Download PDF

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JP7195905B2
JP7195905B2 JP2018230751A JP2018230751A JP7195905B2 JP 7195905 B2 JP7195905 B2 JP 7195905B2 JP 2018230751 A JP2018230751 A JP 2018230751A JP 2018230751 A JP2018230751 A JP 2018230751A JP 7195905 B2 JP7195905 B2 JP 7195905B2
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threaded
shaft
fixed
movable
screw
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JP2020094595A (en
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穣 江原
慶郎 大橋
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Daiken Iki Co Ltd
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Daiken Iki Co Ltd
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Description

本発明は、クランプ装置に関する。 The present invention relates to clamping devices.

従来から、輸液ポンプを輸液スタンドのポール等に取り付けるためのクランプ装置が知られている。例えば、特許文献１に記載のクランプ装置は、輸液ポンプが取り付けられ、固定側把持面を有する固定部材と、前記固定側把持面との間で被固定物を把持する可動側把持面を有し、前記可動側把持面が前記固定側把持面に対して進退可能となるように前記固定部材に取り付けられた可動部材と、前記可動部材の進退方向に沿って延びるとともに、前記進退方向に前記可動部材と一体に移動可能で、かつ、軸心を中心に回転自在に前記可動部材に一端が取り付けられた軸体と、を備える。さらに、前記クランプ装置は、前記軸体に設けられた雄ねじ部と、前記固定部材における前記軸体の軸心を中心とする周方向の一部に設けられた雌ねじ部材と、雌ねじ部材を前記雄ねじ部に付勢する付勢部材と、を有し、前記雄ねじ部と前記雌ねじ部材との螺合により前記進退方向に移動可能となるように前記軸体を支持する軸体支持機構を備える。さらに、前記クランプ装置は、前記軸体の他端に固定され、前記軸心を中心に前記軸体を回転させるための第１操作部材と、前記雄ねじ部と前記雌ねじ部との螺合を解除する螺合解除機構を備える。 Conventionally, there has been known a clamp device for attaching an infusion pump to a pole or the like of an infusion stand. For example, the clamping device described in Patent Document 1 has a fixed member to which an infusion pump is attached and has a fixed side gripping surface, and a movable side gripping surface for gripping an object to be fixed between the fixed side gripping surface. a movable member attached to the fixed member so that the movable-side gripping surface can move back and forth with respect to the fixed-side gripping surface; a shaft having one end attached to the movable member so as to be movable integrally with the member and rotatable about an axis. Further, the clamping device includes a male threaded portion provided on the shaft, a female threaded member provided in a portion of the fixing member in a circumferential direction around the axis of the shaft, and a female threaded member provided on the male screw. and a biasing member that biases the portion, and a shaft support mechanism that supports the shaft so as to be movable in the advancing and retreating directions by screwing the male threaded portion and the female threaded member together. Further, the clamp device includes a first operating member fixed to the other end of the shaft body for rotating the shaft body about the axis, and releasing the screw engagement between the male threaded portion and the female threaded portion. Equipped with a screw release mechanism.

前記螺合解除機構は、前記軸体と間隔を空けて前記軸体と平行に延び、前記軸体の軸心を中心に回転自在に前記可動部材に取り付けられた螺合解除部材と、前記軸体が回転自在に挿入され、前記螺合解除部材の一端に固定された第２操作部材と、を備える。 The screw release mechanism includes a screw release member that extends parallel to the shaft with a gap therebetween and is attached to the movable member so as to be rotatable about the axis of the shaft; a second operating member into which a body is rotatably inserted and fixed to one end of the unscrew member.

このクランプ装置の取付操作では、まず、作業者は、前記第２操作部材を回転させると、前記螺合解除部材が前記雌ねじ部材を押圧して、前記雌ねじ部材が前記雄ねじ部から離れることによって前記螺合が解除される。この状態で、作業者は、前記軸体を前記進退方向の進出方向に移動させ、前記可動側把持面と前記固定側把持面との間にポールを挟み込む。次いで、作業者は、第２操作部材から手を離すと、前記付勢部材の付勢力によって前記雌ねじ部材が前記雄ねじ部に螺合する。最後に、作業者は、第１操作部材を回転させて、前記雄ねじ部と前記雌ねじ部との間のねじ作用によってポールを締め付ける。このようにして、クランプ装置が輸液スタンドのポールに取り付けられる。 In the mounting operation of this clamping device, first, when the operator rotates the second operation member, the unscrew member presses the female threaded member, and the female threaded member separates from the male threaded portion. The threading is released. In this state, the operator moves the shaft in the advancement direction of the advancing/retreating direction, and sandwiches the pole between the movable-side gripping surface and the fixed-side gripping surface. Next, when the operator releases the second operation member, the female thread member is screwed into the male thread portion by the biasing force of the biasing member. Finally, the operator rotates the first operating member to tighten the pole by the screw action between the male threaded portion and the female threaded portion. In this way the clamping device is attached to the pole of the infusion stand.

特開２０１５－４２８９５号公報JP 2015-42895 A

しかしながら、特許文献１のクランプ装置では、輸液ポンプのポールに取り付けられる際に、第１操作部材と第２操作部材の２つの操作部材を操作する必要があるので、クランプ装置の取付作業が煩雑であり、操作対象を誤りやすいという問題がある。 However, with the clamp device of Patent Document 1, when it is attached to the pole of the infusion pump, it is necessary to operate two operating members, the first operating member and the second operating member. There is a problem that it is easy to mistake the operation target.

そこで、本発明は、上記の課題に基づいてなされたものであり、その目的は、簡単な操作によって被固定物に取り付けることができるクランプ装置を提供することである。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a clamp device that can be attached to an object to be fixed by a simple operation.

本発明に係るクランプ装置は、固定側把持面を有する固定部材と、前記固定側把持面との間で被固定物を把持する可動側把持面を有し、前記可動側把持面が前記固定側把持面に対して進退可能となるように前記固定部材に取り付けられた可動部材と、前記可動部材の進退方向に沿って延びるとともに、前記進退方向に前記可動部材と一体に移動可能で、かつ、軸心を中心に回転自在に前記可動部材に取り付けられた軸体と、前記固定部材及び前記軸体のうちの一方の第１部材に設けられた第１ねじ部と、前記固定部材及び前記軸体のうちの他方の第２部材に取り付けられ、前記軸心を中心とする周方向の一部の領域に設けられた第２ねじ部材と、前記第２部材と前記第２ねじ部材との間に設けられ、前記第２ねじ部材を前記第１ねじ部に付勢するねじ用付勢部材と、を有し、前記第１ねじ部と前記第２ねじ部材との螺合により前記進退方向に移動可能となるように前記軸体を支持する軸体支持機構と、前記第１ねじ部と前記第２ねじ部材とが互いに螺合した螺合状態と、前記第２ねじ部材が前記第１ねじ部から離れて前記螺合が解除された螺合解除状態との間で前記軸体の支持状態を切り換える螺合切換機構と、を備える。前記螺合切換機構は、前記第１部材において、前記周方向の一部の領域において前記進退方向に沿って延びるとともに、前記第１ねじ部よりも前記第２ねじ部材に向けて突出し、前記第２ねじ部材を前記第１ねじ部から離れる方向に前記第２ねじ部材を押圧する押圧部を有する。前記第１部材は、前記軸心を中心とする周方向において、前記第１ねじ部のみが設けられた螺合区域と、前記押圧部が設けられた螺合解除区域と、を有する。 A clamp device according to the present invention has a fixed member having a fixed side gripping surface, and a movable side gripping surface for gripping an object to be fixed between the fixed side gripping surface, the movable side gripping surface being the fixed side gripping surface. a movable member attached to the fixed member so as to be able to move forward and backward with respect to the gripping surface; A shaft attached to the movable member so as to be rotatable about an axis, a first threaded portion provided on a first member of one of the fixed member and the shaft, the fixed member and the shaft Between a second screw member attached to the other second member of the body and provided in a partial region in the circumferential direction about the axis, and the second member and the second screw member and a screw urging member for urging the second screw member to the first screw portion, wherein the first screw portion and the second screw member are screwed together to move in the forward and backward direction. a shaft supporting mechanism for supporting the shaft so as to be movable; a threaded state in which the first screw portion and the second screw member are screwed together; and a screwing switching mechanism for switching the support state of the shaft body between a screwing release state in which the screwing is released away from the portion. The thread switching mechanism extends along the advancing/retreating direction in a partial region in the circumferential direction of the first member, protrudes toward the second threaded member from the first threaded portion, and extends in the first member. It has a pressing portion that presses the second screw member in a direction away from the first screw member. The first member has, in a circumferential direction around the axis, a threaded engagement area provided with only the first threaded portion and a threaded engagement release area provided with the pressing portion.

この構成によれば、前記第１部材は、前記軸心を中心とする周方向において、前記第１ねじ部のみが設けられた螺合区域と、前記押圧部が設けられた螺合解除区域と、を有する。そのため、作業者は、第１ねじ部と第２ねじ部材とが互いに螺合した螺合状態において、第１部材を第２部材に対して回転させると、押圧部が第２ねじ部材を押圧することによって第２ねじ部材が第１ねじ部から離れて前記螺合が解除された螺合解除状態へ前記第１ねじ部と前記第２ねじ部材との螺合状態を切り替えることができる。この螺合解除状態では、前記軸体は、前記第２ねじ部材に拘束されることなく、進退方向に自由に移動することができるので、作業者は、固定側把持面と可動側把持面とを被固定物にスムーズに近付けることができる。さらに、作業者は、前記螺合解除状態において、第１部材を第２部材に対して回転させると、軸体の支持状態を前記螺合状態に切り替えることができる。そのため、作業者は、固定側把持面と可動側把持面とを被固定物に近付けた状態において、第１部材を第２部材に対して回転させると、第１ねじ部と第２ねじ部材との間のねじ作用により、固定側把持面と可動側把持面との間で被固定物を締め付けることができる。このように、固定部材に対する軸体という１つの部材を回転させるだけによってクランプ装置を被固定物に取り付けることができるので、クランプ装置の簡単な取付操作を実現できる。 According to this configuration, the first member has, in the circumferential direction around the axial center, a threaded region provided with only the first threaded portion and a threaded disengagement region provided with the pressing portion. , has Therefore, when the operator rotates the first member relative to the second member in a threaded state in which the first threaded portion and the second threaded member are screwed together, the pressing portion presses the second threaded member. Thus, the threaded state between the first threaded portion and the second threaded member can be switched to a disengaged state in which the second threaded member is separated from the first threaded portion and the threaded engagement is released. In this unscrewed state, the shaft can move freely in forward and backward directions without being constrained by the second screw member. can be smoothly approached to the object to be fixed. Further, the worker can switch the support state of the shaft to the screwed state by rotating the first member relative to the second member in the unscrewed state. Therefore, when the operator rotates the first member with respect to the second member in a state in which the fixed-side gripping surface and the movable-side gripping surface are close to the object to be fixed, the first threaded portion and the second threaded member By the screw action between the fixed-side gripping surface and the movable-side gripping surface, the object to be fixed can be tightened. In this way, the clamping device can be attached to the object to be fixed simply by rotating one member, that is, the shaft relative to the fixing member, so that the clamping device can be easily attached.

上記構成において、前記可動側把持面が前記固定側把持面に対して進出する進出方向に向けて前記可動部材を前記固定部材に対して付勢する把持用付勢部材を更に備えてもよい。 The above configuration may further include a gripping biasing member that biases the movable member against the fixed member in an advance direction in which the movable gripping surface advances with respect to the fixed gripping surface.

この構成によれば、可動側把持面は、固定側把持面に近づく方向に付勢されるため、可動側把持面と固定側把持面との間に被固定物を挟み込み易くなるとともに、クランプ装置が被固定物から脱落しにくくなる。 According to this configuration, the movable-side gripping surface is biased in a direction approaching the fixed-side gripping surface. becomes difficult to fall off from the fixed object.

上記構成において、前記螺合区域は、前記軸心を中心とする前記周方向において、前記螺合解除区域よりも大きくてもよい。 In the above configuration, the threaded area may be larger than the unscrewed area in the circumferential direction about the axis.

この構成によれば、第１ねじ部と第２ねじ部材とが螺合する面積が大きくなるので、より大きな力で被固定物を可動側把持面と固定側把持面との間で締め付けることができる。そのため、第１部材に押圧部が設けられていても、被固定物を可動側把持面と固定側把持面との間で締め付ける締付力を確保することができるので、クランプ装置が被固定物から脱落しにくくなる。 With this configuration, the area where the first threaded portion and the second threaded member are screwed together becomes large, so that the object to be fixed can be tightened between the movable side gripping surface and the fixed side gripping surface with a greater force. can. Therefore, even if the first member is provided with the pressing portion, it is possible to secure the clamping force for tightening the object to be fixed between the movable-side gripping surface and the fixed-side gripping surface. difficult to fall off.

上記構成において、前記軸心を中心とする前記周方向において、前記螺合解除区域以外の区域は全て前記螺合区域であってもよい。 In the above configuration, all areas other than the unscrewed area in the circumferential direction around the axis may be the threaded area.

この構成によれば、押圧部が第２ねじ部材を押圧していない状態では、常に、第１ねじ部と第２ねじ部材とが螺合した螺合状態になる。そのため、作業者が、第１部材を第２部材に対して回転させたときに、第１ねじ部と第２ねじ部材との螺合を誤って解除してしまうことが抑制される。 According to this configuration, when the pressing portion does not press the second screw member, the first screw portion and the second screw member are always screwed together. Therefore, when the operator rotates the first member with respect to the second member, it is possible to prevent the first threaded portion and the second threaded member from being erroneously disengaged.

上記構成において、前記螺合切換機構は、前記螺合解除状態から前記螺合状態へ前記第１部材を前記第２部材に対して回転させるための付勢力を前記螺合解除状態にある前記第１部材および前記第２部材に付与する操作用付勢部材を有してもよい。 In the above configuration, the screw switching mechanism applies an urging force for rotating the first member relative to the second member from the unscrewed state to the unscrewed state. It may have an operating biasing member applied to the first member and the second member.

この構成によれば、螺合解除状態にある軸体は、操作用付勢部材の付勢力によって螺合状態となる方向へ回転するので、作業者は、第１部材を第２部材に対して僅かに回転させるだけで、被固定物を可動側把持面と固定側把持面との間で締め付けることができる。そのため、クランプ装置の取付作業がより簡単になる。 According to this configuration, the shaft in the disengaged state rotates in the direction of the screwed state due to the biasing force of the biasing member for operation. The object to be fixed can be clamped between the movable-side gripping surface and the fixed-side gripping surface simply by rotating it slightly. Therefore, the operation of attaching the clamping device becomes easier.

上記構成において、前記操作用付勢部材は、前記第１部材を前記第２部材に対して前記螺合解除状態から前記螺合状態まで回転させる付勢力を有してもよい。 In the above configuration, the operation biasing member may have a biasing force that rotates the first member with respect to the second member from the unscrewed state to the threaded state.

この構成によれば、可動側把持面と固定側把持面とを近づけた後、軸体に周方向の力を取り除くだけで、第１ねじ部と第２ねじ部材とが互いに螺合した螺合状態にさせることができる。そのため、可動側把持面および固定側把持面の位置が固定された状態で、被固定物を可動側把持面と固定側把持面の間で締め付けることができる。 According to this configuration, the first threaded portion and the second threaded member are screwed together only by removing the force in the circumferential direction of the shaft body after bringing the movable side gripping surface and the fixed side gripping surface closer to each other. state can be made. Therefore, the fixed object can be clamped between the movable gripping surface and the fixed gripping surface while the positions of the movable gripping surface and the fixed gripping surface are fixed.

上記構成において、前記固定部材は、前記進退方向に間隔を空けて配置され、前記軸体を前記進退方向に移動可能に挿通させる軸体挿通孔を備える複数の軸体挿通部を有し、前記第２ねじ部材は、前記進退方向の移動が規制されるように前記進退方向に隣り合う前記軸体挿通部の間に取り付けられていてもよい。 In the above configuration, the fixing member has a plurality of shaft body insertion portions arranged at intervals in the advancing and retreating direction and having a shaft body insertion hole through which the shaft body is inserted so as to be movable in the advancing and retreating direction, The second screw member may be attached between the shaft body insertion portions adjacent to each other in the advancing and retreating direction so that movement in the advancing and retreating direction is restricted.

この構成によれば、第２ねじ部材は、進退方向の移動が規制されるように進退方向に隣り合う軸体挿通部の間に取り付けられているので、第２ねじ部材が進退方向にずれてしまうことが軸体挿通部によって抑制される。そのため、第２ねじ部材と第１ねじ部との間に生じるねじ作用をより強力にすることができるので、固定側把持面と可動側把持面との間で被固定物をより強力に締め付けることができる。 According to this configuration, the second screw member is attached between the shaft body insertion portions adjacent to each other in the advance/retreat direction so that movement in the advance/retreat direction is restricted. Storing is suppressed by the shaft body insertion portion. Therefore, the screw action generated between the second threaded member and the first threaded portion can be made stronger, so that the object to be fixed can be tightened more strongly between the fixed-side gripping surface and the movable-side gripping surface. can be done.

上記構成において、前記螺合切換機構は、前記螺合状態では前記第２ねじ部材が前記第１ねじ部から離れる方向の移動を規制する規制位置に位置するとともに、前記螺合解除状態では、前記第２ねじ部材が前記第１ねじ部から離れる方向の移動を許容する許容位置に位置するように、前記第２ねじ部材に対して前記軸体の回転に応じて移動自在に設けられた規制部材を備えてもよい。 In the above configuration, the screw switching mechanism is positioned at a restricting position for restricting movement of the second threaded member in a direction away from the first threaded portion in the threaded state, and is positioned in the unscrewed state. A restricting member provided movably with respect to the second threaded member according to the rotation of the shaft so that the second threaded member is positioned at an allowable position allowing movement in a direction away from the first threaded portion. may be provided.

上記クランプ装置では、可動側把持面と固定側把持面の間で被固定物を締め付ける方向に軸体を回転させるときに、第２ねじ部材には、第１ねじ部の回転によって進退方向の力だけでなく、第１ねじ部から離れる方向の押圧力も作用するので、第１ねじ部と第２ねじ部とが完全に噛合うまでの間に第２ねじ部材が第１ねじ部から離れる方向に移動して、被固定物を締め付ける締付力が弱くなってしまうことがある。そのため、クランプ装置が被固定物から外れてしまう虞がある。 In the above clamping device, when the shaft body is rotated in the direction of clamping the object to be fixed between the movable-side gripping surface and the fixed-side gripping surface, the second screw member receives a forward and backward force due to the rotation of the first screw portion. In addition, since the pressing force in the direction away from the first threaded portion also acts, the second threaded member moves away from the first threaded portion until the first threaded portion and the second threaded portion are completely engaged. and the tightening force for tightening the object to be fixed may be weakened. Therefore, there is a possibility that the clamp device may come off from the object to be fixed.

この構成によれば、螺合状態では第２ねじ部材が第１ねじ部から離れる方向の移動を規制する規制位置に規制部材が位置しているので、可動側把持面と固定側把持面との間で被固定物を締め付ける方向に軸体を回転させるときに、第１ねじ部の回転によって第２ねじ部材に第１ねじ部から離れる方向の押圧力が作用しても、第２ねじ部材の第１ねじ部から離れる方向への移動が規制部材によって抑制される。そのため、クランプ装置が被固定物から外れてしまうことが抑制される。一方、螺合解除状態では第２ねじ部材が第１ねじ部から離れる方向の移動を許容する許容位置に規制部材が位置しているので、第２ねじ部材が第１ねじ部から離れる方向の移動が可能になる。このように、固定部材に対する軸体という１つの部材を回転させるだけで、第２ねじ部材の移動の許否を切り換えることができるので、クランプ装置が被固定物から外れてしまうことを抑制しつつ、クランプ装置の簡単な取付操作を実現できる。 According to this configuration, in the screwed state, the restricting member is positioned at the restricting position that restricts movement of the second threaded member in the direction away from the first threaded portion. When the shaft body is rotated in the direction of tightening the object to be fixed between the second threaded member and the second threaded member, even if the second threaded member is pressed by the rotation of the first threaded portion in a direction away from the first threaded portion, the second threaded member Movement in the direction away from the first threaded portion is suppressed by the restricting member. Therefore, the clamp device is prevented from coming off from the object to be fixed. On the other hand, in the unscrewed state, the restricting member is positioned at the allowable position where the movement of the second threaded member away from the first threaded portion is allowed, so that the second threaded member moves away from the first threaded portion. becomes possible. In this way, it is possible to switch permission/prohibition of movement of the second screw member only by rotating one member, that is, the shaft with respect to the fixing member. A simple mounting operation of the clamping device can be realized.

上記構成において、前記規制部材は、その揺動中心から一方側に向かって延びる基端部と、前記揺動中心から前記基端部とは反対方向に延びる規制部と、を有してもよい。前記第２部材としての前記固定部材は、前記第２ねじ部材が前記第１ねじ部から離れる方向において前記第２ねじ部材から間隔を空けて配置された第２ねじ部材移動規制部を有してもよい。前記規制部材は、前記螺合状態において前記第２ねじ部材と前記第２ねじ部材移動規制部との間に前記規制部が配置される前記規制位置と、前記螺合解除状態において前記基端部が前記押圧部で押圧されることによって前記第２ねじ部材と前記第２部材との間から離れた位置に前記規制部が配置される前記許容位置と、の間で揺動自在に前記第２ねじ部材に取り付けられていてもよい。 In the above configuration, the regulating member may have a base end portion extending toward one side from the swing center, and a regulating portion extending from the swing center in a direction opposite to the base end portion. . The fixing member as the second member has a second screw member movement restricting portion spaced apart from the second screw member in a direction in which the second screw member separates from the first screw portion. good too. The restricting member has the restricting position where the restricting portion is arranged between the second screw member and the second screw member movement restricting portion in the screwed state, and the base end portion in the unscrewed state. is pressed by the pressing portion so that the second screw can swing freely between the allowable position where the restricting portion is arranged at a position separated from the space between the second screw member and the second member. It may be attached to a threaded member.

この構成によれば、螺合状態において第２ねじ部材と第２ねじ部材移動規制部との間に規制部が配置される。そのため、螺合状態において可動側把持面と固定側把持面の間で被固定物を締め付ける方向に軸体を回転させるときに、第２ねじ部材に第１ねじ部から離れる方向の押圧力が作用しても、第２ねじ部材は、第２ねじ部材の第１ねじ部から離れる方向への移動が規制部によって抑制される。 According to this configuration, the restricting portion is arranged between the second screw member and the second screw member movement restricting portion in the screwed state. Therefore, when the shaft body is rotated in the direction in which the object to be fixed is tightened between the movable-side gripping surface and the fixed-side gripping surface in the screwed state, a pressing force in the direction away from the first threaded portion acts on the second threaded member. However, the movement of the second screw member in the direction away from the first screw portion of the second screw member is suppressed by the restricting portion.

上記構成において、前記可動部材は、前記軸体の周囲を取り囲んだ状態で前記固定部材に対して前記進退方向に移動可能で、かつ、前記軸心を中心に回転自在に前記軸体を支持する筒状の軸受を有してもよい。前記固定側把持面と前記可動側把持面とは、前記軸受から前記進退方向に直交する方向に離れた位置に配置されていてもよい。
In the above configuration, the movable member surrounds the shaft, is movable in the advancing/retreating direction with respect to the fixed member , and supports the shaft so as to be rotatable about the axis. It may have a cylindrical bearing. The stationary-side gripping surface and the movable-side gripping surface may be arranged at a position separated from the bearing in a direction perpendicular to the advancing/retreating direction.

この構成によれば、固定側把持面と可動側把持面とは、軸受から進退方向に直交する方向に離れた位置に配置されているので、固定側把持面と可動側把持面とが軸体の軸線上に位置する場合に比べて、クランプ装置における進退方向における長さが短くなり、コンパクトな形態にすることができる。 According to this configuration, since the fixed-side gripping surface and the movable-side gripping surface are arranged at positions separated from the bearing in the direction orthogonal to the advancing/retreating direction, the fixed-side gripping surface and the movable-side gripping surface are arranged on the shaft. Compared to the case where the clamping device is located on the axis of the clamping device, the length in the forward and backward direction of the clamping device can be shortened, and the form can be made compact.

上記構成において、前記軸受は、前記軸体の周囲を取り囲む軸受本体部と、前記軸受本体部を半径方向に貫通して前記軸体を露出させる軸体露出窓と、を有してもよい。 In the above configuration, the bearing may include a bearing body surrounding the shaft, and a shaft exposing window that radially penetrates the bearing body and exposes the shaft.

この構成によれば、第２ねじ部材と第１ねじ部との螺合を軸体露出窓によって可能にしつつ、埃や薬液等が第１ねじ部に付着することを軸受本体部によって抑制することができる。 According to this configuration, the bearing body prevents dust, chemical solution, or the like from adhering to the first threaded portion while allowing the second threaded member and the first threaded portion to be screwed together by the shaft exposing window. can be done.

上記構成において、前記固定部材は、前記クランプ装置が前記被固定物に固定された状態における上下方向が設定された被取付物を取り付けるための取付部を有してもよい。前記軸体露出窓は、前記被取付物に設定された上下方向の下向きに開いていてもよい。 In the above configuration, the fixing member may have a mounting portion for mounting an object to be fixed, the vertical direction of which is set in a state where the clamp device is fixed to the object to be fixed. The shaft exposing window may open downward in the up-down direction set in the attached object.

この構成によれば、取付部に取り付けられた医療用ポンプから薬液が漏れたとしても、軸体露出窓は、被取付物に設定された上下方向の下向きに開いているので、クランプ装置が被固定物に固定された状態において薬液が軸体露出窓を通して第１ねじ部に付着することがより抑制される。 According to this configuration, even if the medical pump attached to the attachment portion leaks the liquid medicine, the shaft exposing window is opened downward in the vertical direction set on the attached object, so that the clamp device can be secured to the attached object. In a state of being fixed to a fixed object, the chemical solution is further suppressed from adhering to the first screw portion through the shaft exposing window.

上記構成において、前記可動部材及び前記固定部材は、前記進退方向への移動を許容しつつ、前記進退方向と直交する方向への移動を規制するように互いに係合する係合部をそれぞれ有してもよい。 In the above configuration, the movable member and the fixed member each have an engaging portion that engages with each other so as to restrict movement in a direction orthogonal to the forward/backward direction while allowing movement in the forward/backward direction. may

この構成によれば、可動部材及び固定部材は、進退方向と直交する方向への移動が規制されるので、可動部材と固定部材との間で前記進退方向と直交する方向の曲げ剛性の高い係合状態を実現できる。そのため、特に、両把持面が進退方向と直交する方向で軸受から離れて配置されている場合のように把持力の反力が軸受に曲げ力として大きく伝わるときに有効である。 According to this configuration, since the movable member and the fixed member are restricted from moving in the direction perpendicular to the advance/retreat direction, the engagement between the movable member and the fixed member has high bending rigidity in the direction perpendicular to the advance/retreat direction. It is possible to achieve a convergent state. Therefore, it is particularly effective when the reaction force of the gripping force is largely transmitted to the bearing as a bending force, such as when both gripping surfaces are arranged apart from the bearing in the direction orthogonal to the advancing/retreating direction.

上記構成において、前記軸体は、前記螺合状態において前記周方向における締付方向の回転が規制される締付限度位置と、前記螺合解除状態において前記周方向における緩める方向の回転が規制される解除限度位置と、を有してもよい。前記可動部材と前記固定部材のうちの少なくとも一方は、前記締付限度位置において前記軸体と前記周方向における締付方向に接触する締付阻止面と、前記解除限度位置において前記軸体と前記周方向における緩める方向に接触する解除阻止面と、を有してもよい。 In the above configuration, the shaft has a tightening limit position where rotation in the tightening direction in the circumferential direction is restricted in the threaded state, and a rotation in the loosening direction in the circumferential direction in the unscrewed state. and a release limit position. At least one of the movable member and the fixed member has a tightening prevention surface that contacts the shaft in the tightening direction in the circumferential direction at the tightening limit position, and and a releasing prevention surface that contacts in the loosening direction in the circumferential direction.

この構成によれば、可動部材と固定部材のうちの少なくとも一方は、締付限度位置において軸体と周方向に接触する締付阻止面を有するので、作業者は、螺合解除状態から螺合状態に軸体を回転したい場合に、螺合解除状態から螺合状態を経てさらに螺合解除状態まで軸体を回転してしまうことを防止することができる。一方、可動部材と固定部材のうちの少なくとも一方は、解除限度位置において軸体と周方向に接触する解除阻止面を有するので、作業者は、螺合状態から螺合解除状態に軸体を回転したい場合に、螺合状態から螺合解除状態を経てさらに螺合状態まで軸体を回転してしまうことを防止することができる。 According to this configuration, since at least one of the movable member and the fixed member has the tightening prevention surface that contacts the shaft in the circumferential direction at the tightening limit position, the operator can easily engage the screw from the unscrewed state. It is possible to prevent the shaft from rotating from the unscrewed state to the unscrewed state through the unscrewed state when the shaft is to be rotated to the unscrewed state. On the other hand, since at least one of the movable member and the fixed member has a release prevention surface that contacts the shaft in the circumferential direction at the release limit position, the operator can rotate the shaft from the screwed state to the unscrewed state. When desired, it is possible to prevent the shaft from rotating from the screwed state to the screwed state through the unscrewed state.

本発明によれば、簡単な操作によってクランプ装置を被固定物に取り付けることができる。 ADVANTAGE OF THE INVENTION According to this invention, a clamp apparatus can be attached to a to-be-fixed object by easy operation.

本発明の実施形態に係るクランプ装置の斜視図である。1 is a perspective view of a clamping device according to an embodiment of the invention; FIG. 図１を進出方向側から見た図である。It is the figure which looked at FIG. 1 from the advancing direction side. 図２のＩＩＩ－ＩＩＩ線で切断した断面図である。FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2; 本発明の実施形態に係るクランプ装置の螺合状態を示す図である。It is a figure which shows the screwing state of the clamp apparatus which concerns on embodiment of this invention. 図３のＶ－Ｖ線で切断した断面図である。FIG. 4 is a cross-sectional view taken along line VV of FIG. 3; 本発明の実施形態に係るクランプ装置の螺合解除状態において操作側阻止部が可動側規制部に接触した状態を示す図である。It is a figure which shows the state which the operation side prevention|blocking part contacted the movable side control part in the unscrewed state of the clamp apparatus which concerns on embodiment of this invention. 本発明の実施形態に係るクランプ装置の螺合状態において操作側阻止部が可動側規制部に接触した状態を示す図である。It is a figure which shows the state which the operation side prevention|blocking part contacted the movable side control part in the screwing state of the clamp apparatus which concerns on embodiment of this invention. 図４のＶＩＩＩ－ＶＩＩＩ線で切断した断面図である。FIG. 5 is a cross-sectional view taken along line VIII-VIII of FIG. 4; 本発明の実施形態に係るクランプ装置の規制部材を示す図である。It is a figure which shows the control member of the clamp apparatus which concerns on embodiment of this invention. 本発明の実施形態に係るクランプ装置の螺合解除状態を示す図である。It is a figure which shows the unscrewed state of the clamp apparatus which concerns on embodiment of this invention. 図１０のＸＩ－ＸＩ線で切断した断面図である。11 is a cross-sectional view taken along line XI-XI of FIG. 10; FIG. 発明の実施形態に係るクランプ装置の押圧部が規制部材の基端部を押圧した状態を示す図である。It is a figure which shows the state which the press part of the clamp apparatus which concerns on embodiment of invention presses the base end part of the control member. 発明の実施形態に係るクランプ装置の螺合解除状態における規制部材の状態を示す図である。It is a figure which shows the state of the regulation member in the unscrewed state of the clamp apparatus which concerns on embodiment of invention. 発明の実施形態に係るクランプ装置の螺合状態における規制部材の状態を示す図である。It is a figure which shows the state of the regulation member in the screwing state of the clamp apparatus which concerns on embodiment of invention. 本発明の変形例に係るクランプ装置の断面図である。It is a sectional view of a clamp device concerning a modification of the present invention.

以下、本発明の実施形態について、図面を参照しながら説明する。但し、以下で参照する各図は、説明の便宜上、本発明の実施形態に係るクランプ装置１を説明するために必要となる主要な構成要素を簡略化して示したものである。したがって、本発明の実施形態に係るクランプ装置１は、本明細書が参照する各図に示されていない任意の構成要素を備え得る。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, for convenience of explanation, each figure to be referred to below shows a simplified view of main constituent elements necessary for explaining the clamp device 1 according to the embodiment of the present invention. Accordingly, the clamping device 1 according to embodiments of the invention may comprise optional components not shown in the figures to which this specification refers.

クランプ装置１は、輸液ポンプやシリンジポンプを含む医療用ポンプ（図示省略）などの被取付物をスタンドのポールＰ等の被固定物に固定するための装置である。具体的には、クランプ装置１は、図１～３に示すように、固定部材２、可動部材３、軸体４、把持用付勢部材６、軸体支持機構７、および螺合切換機構８を備える。クランプ装置１は、可動部材３の後述する可動側把持面２１ａと固定部材２の後述する固定側把持面１０ａとの間で被固定物を挟み込むことによって被固定物に固定される。被取付物は、クランプ装置１が被固定物に固定された状態における上下方向が設定されているものである。以下、可動側把持面２１ａと固定側把持面１０ａとの間隔が狭くなる方向に可動側把持面２１ａが固定側把持面１０ａに対して移動する方向を進出方向と言う。可動側把持面２１ａと固定側把持面１０ａとの間隔が広くなる方向に可動側把持面２１ａが固定側把持面１０ａに対して移動する方向を退出方向と言う。進出方向と退出方向を合せて進退方向と言う。 The clamp device 1 is a device for fixing an object to be attached such as a medical pump (not shown) including an infusion pump and a syringe pump to an object to be fixed such as a pole P of a stand. Specifically, as shown in FIGS. 1 to 3, the clamping device 1 includes a fixed member 2, a movable member 3, a shaft 4, a grasping biasing member 6, a shaft support mechanism 7, and a thread switching mechanism 8. Prepare. The clamp device 1 is fixed to an object by sandwiching the object between a movable gripping surface 21a of the movable member 3 and a fixed gripping surface 10a of the fixed member 2 . The object to be fixed is set in a vertical direction in a state where the clamp device 1 is fixed to the object to be fixed. Hereinafter, the direction in which the movable-side gripping surface 21a moves relative to the fixed-side gripping surface 10a in the direction in which the distance between the movable-side gripping surface 21a and the fixed-side gripping surface 10a is narrowed is referred to as an advancing direction. A direction in which the movable-side gripping surface 21a moves relative to the fixed-side gripping surface 10a in a direction in which the distance between the movable-side gripping surface 21a and the fixed-side gripping surface 10a is widened is referred to as a retreating direction. The advancing direction and the retreating direction are collectively referred to as the advance/retreat direction.

固定部材２は、可動部材３が進退方向に移動可能に取り付けられる本体部９と、可動部材３との間で被固定物を把持する固定側把持部１０と、を有する。 The fixed member 2 has a body portion 9 to which the movable member 3 is attached so as to be movable in the advancing and retreating directions, and a stationary gripping portion 10 that grips an object to be fixed between itself and the movable member 3 .

本体部９は、可動部材３の進退方向への移動を許容しつつ、進退方向と直交する方向への移動を規制するように可動部材３と係合する固定側係合部１１と、固定側係合部１１の進出方向側に設けられた進出側突起１２と、固定側係合部１１の退出方向側に設けられた抜止片１３と、軸体４を進退方向に挿通する複数の軸体挿通部１４と、医療用ポンプが取り付けられるポンプ取付部１５と、を有する。 The body portion 9 includes a fixed-side engaging portion 11 that engages with the movable member 3 so as to restrict movement in a direction perpendicular to the forward-backward direction while permitting movement of the movable member 3 in the forward-backward direction; An advancing-side protrusion 12 provided on the advancing direction side of the engaging portion 11, a retaining piece 13 provided on the withdrawing direction side of the fixed-side engaging portion 11, and a plurality of shafts for inserting the shaft 4 in the advancing/retreating direction. It has an insertion portion 14 and a pump attachment portion 15 to which a medical pump is attached.

固定側係合部１１は、進退方向に貫通して、可動部材３の後述する可動側係合部１８が挿入される可動部挿通孔１６を有する。可動部挿通孔１６は、図２に示すように、略Ｔ形状に形成されている。尚、固定側係合部１１は、固定部材２の係合部の一例である。 The fixed side engaging portion 11 has a movable portion insertion hole 16 penetrating in the advancing/retreating direction and into which a later-described movable side engaging portion 18 of the movable member 3 is inserted. The movable part insertion hole 16 is formed in a substantially T shape, as shown in FIG. Note that the fixed side engaging portion 11 is an example of the engaging portion of the fixed member 2 .

進出側突起１２は、図１～３に示すように、固定側係合部１１の内面における進出方向の端部から可動部挿通孔１６内へ突出するように形成されている。進出側突起１２には、後述する把持用付勢部材６の進出方向の端部が取り付けられている。 As shown in FIGS. 1 to 3, the advance-side projection 12 is formed so as to protrude into the movable portion insertion hole 16 from the end of the inner surface of the fixed-side engagement portion 11 in the advance direction. The advancing-side projection 12 is attached with an advancing-direction end of a grip biasing member 6 , which will be described later.

抜止片１３は、固定側係合部１１の内面における退出方向の端部から後述する可動側係合部１８の抜止溝２４内へ突出するように形成されている。 The retaining piece 13 is formed so as to protrude into a retaining groove 24 of the movable side engaging portion 18 to be described later from the end portion of the inner surface of the fixed side engaging portion 11 in the retreating direction.

複数の軸体挿通部１４は、進退方向に間隔を空けて互いに平行に固定側係合部１１の外面に形成されている。本実施形態では、複数の軸体挿通部１４は３つ設けられているが、最低２つ設けられていれば良い。各軸体挿通部１４は、略平板状に形成されており、中央部分に進退方向に貫通して後述する軸体４を進退方向に移動可能に挿通させる円形の軸体挿通孔１７を有する。軸体挿通孔１７は、３つの軸体挿通部１４のうちの最も退出方向側に位置する軸体挿通部１４は、他の２つの軸体挿通部１４よりも進退方向と直交する方向に張り出している（図１参照）。 A plurality of shaft insertion portions 14 are formed on the outer surface of the fixed-side engaging portion 11 in parallel with each other at intervals in the advancing/retreating direction. Although three shaft body insertion portions 14 are provided in the present embodiment, at least two shaft insertion portions 14 may be provided. Each shaft insertion portion 14 is formed in a substantially flat plate shape, and has a circular shaft insertion hole 17 penetrating in the advancing/retreating direction at the central portion thereof and through which the later-described shaft 4 is movably inserted in the advancing/retreating direction. In the shaft insertion hole 17, the shaft insertion portion 14 positioned closest to the retraction direction out of the three shaft insertion portions 14 protrudes in the direction orthogonal to the advance/retreat direction more than the other two shaft insertion portions 14. (See Figure 1).

ポンプ取付部１５は、複数の軸体挿通部１４を進退方向に連結するように複数の軸体挿通部１４に形成されるとともに、固定側係合部１１から複数の軸体挿通部１４に沿って延びるように形成されている。尚、ポンプ取付部１５は、軸体挿通部１４のみに形成されていてもよい。ポンプ取付部１５は、図４に示すように、進出方向側の２つの軸体挿通部１４が固定された第１取付部１５ａと、最も退出方向側の軸体挿通部１４が固定された第２取付部１５ｂと、第１取付部１５ａの退出方向側端部から第２取付部１５ｂまで延びる結合部１５ｃと、第２取付部１５ｂに形成され、後述する雌ねじ部材２８の移動を規制するための雌ねじ部材移動規制部５６と、を有する。 The pump mounting portion 15 is formed in the plurality of shaft body insertion portions 14 so as to connect the plurality of shaft body insertion portions 14 in the advancing and retreating directions, and extends along the plurality of shaft body insertion portions 14 from the fixed side engaging portion 11 . It is formed so that it may extend. In addition, the pump attachment portion 15 may be formed only in the shaft insertion portion 14 . As shown in FIG. 4, the pump mounting portion 15 includes a first mounting portion 15a to which two shaft body insertion portions 14 on the advancing direction side are fixed, and a first mounting portion 15a to which the shaft body insertion portion 14 on the most retreating direction side is fixed. 2 mounting portion 15b, a coupling portion 15c extending from the end of the first mounting portion 15a toward the second mounting portion 15b, and a connecting portion 15c formed in the second mounting portion 15b for restricting movement of a female screw member 28, which will be described later. female screw member movement restricting portion 56.

雌ねじ部材移動規制部５６は、第２取付部１５ｂにおいて雌ねじ部材２８と揺動方向に間隔を空けて配置されている。雌ねじ部材移動規制部５６は、雌ねじ部材２８に向かって突出している。尚、雌ねじ部材移動規制部５６は、第２ねじ部材移動規制部の一例である。また、雌ねじ部材移動規制部５６は、省略されていてもよい。ポンプ取付部１５は、取付部の一例である。 The female screw member movement restricting portion 56 is arranged at a distance from the female screw member 28 in the swinging direction at the second attachment portion 15b. The female screw member movement restricting portion 56 protrudes toward the female screw member 28 . In addition, the female screw member movement restricting portion 56 is an example of a second screw member movement restricting portion. Further, the female screw member movement restricting portion 56 may be omitted. The pump attachment portion 15 is an example of an attachment portion.

固定側把持部１０は、図１に示すように、固定側係合部１１の外面から軸体挿通部１４とは反対方向に延びている。これにより、固定側把持部１０は、後述する軸受１９に対して進退方向に直交する方向に離れた位置に配置される。固定側把持部１０は、可動部材３との間で被固定物を把持するように退出方向を向く固定側把持面１０ａを有する。固定側把持面１０ａは、被固定物の形状に対応するように形成されている。本実施形態では、固定側把持面１０ａは、図３に示すように、輸液スタンドのポールＰの形状に対応するように略円弧状の凹部を有している。凹部の内面は、波形に形成されており、これにより、可動部材３との間でポールＰを挟み込んだ状態でポールＰを滑りにくくしている。尚、本実施形態では、固定部材２は、第２部材の一例である。 As shown in FIG. 1 , the stationary gripping portion 10 extends from the outer surface of the stationary engaging portion 11 in the direction opposite to the shaft insertion portion 14 . As a result, the fixed-side gripping portion 10 is arranged at a position separated from a bearing 19, which will be described later, in a direction perpendicular to the advancing/retreating direction. The fixed-side gripping portion 10 has a fixed-side gripping surface 10a facing the retreating direction so as to grip an object to be fixed between itself and the movable member 3 . The fixed-side gripping surface 10a is formed so as to correspond to the shape of the object to be fixed. In this embodiment, as shown in FIG. 3, the fixed-side gripping surface 10a has a substantially arcuate concave portion corresponding to the shape of the pole P of the infusion stand. The inner surface of the concave portion is formed in a corrugated shape, thereby making it difficult for the pole P to slip while being sandwiched between the movable member 3 and the pole P. Incidentally, in the present embodiment, the fixing member 2 is an example of the second member.

可動部材３は、図１～３、５に示すように、進退方向への移動を許容しつつ、進退方向と直交する方向への移動を規制するように固定側係合部１１と係合する可動側係合部１８と、軸体４の周囲を取り囲んだ状態で、軸体４の軸心を中心に回転自在に軸体４を支持する筒状の軸受１９と、軸受１９と可動側係合部１８とを連結する連結部２０と、固定側把持部１０との間で被固定物を把持する可動側把持部２１と、を有する。 As shown in FIGS. 1 to 3 and 5, the movable member 3 engages with the fixed-side engaging portion 11 so as to restrict movement in a direction perpendicular to the advancing/retreating direction while allowing movement in the advancing/retreating direction. a movable-side engaging portion 18; a cylindrical bearing 19 that surrounds the shaft 4 and supports the shaft 4 so as to be rotatable about the axis of the shaft 4; It has a connecting portion 20 that connects with the joining portion 18 and a movable gripping portion 21 that grips an object to be fixed between the fixed gripping portion 10 and the fixed gripping portion 10 .

可動側係合部１８は、進退方向に平行に延びている。可動側係合部１８の外面は、図２に示すように、固定側係合部１１の可動部挿通孔１６と対応するように、可動部挿通孔１６よりも僅かに小さい略Ｔ字状に形成されている。可動側係合部１８は、軸受１９とは反対側に開くとともに、進退方向に延びる付勢部材設置溝２２を有する。尚、付勢部材設置溝２２は、把持用付勢部材６が省略される場合には、省略されてもよい。付勢部材設置溝２２の退出方向側の端部には、図３に示すように、把持用付勢部材６の退出方向側の端部が取り付けられる退出側突起２３が設けられている。また、可動側係合部１８は、軸受１９側に開くとともに、進退方向に延びる抜止溝２４を有する。抜止溝２４には、抜止片１３が進退方向に移動可能に嵌まり込んでいる。これにより、可動側把持面２１ａと固定側把持面１０ａとが進退方向に最も離れたときに、抜止溝２４の進出方向の端部に抜止片１３が当接することにより、可動部材３が固定部材２から抜けてしまうことを防止している。尚、可動側係合部１８は、可動部材３の係合部の一例である。 The movable-side engaging portion 18 extends parallel to the advancing/retreating direction. As shown in FIG. 2 , the outer surface of the movable-side engaging portion 18 has a substantially T-shape slightly smaller than the movable-part insertion hole 16 so as to correspond to the movable-part insertion hole 16 of the fixed-side engaging portion 11 . formed. The movable-side engaging portion 18 opens to the side opposite to the bearing 19 and has an urging member installation groove 22 extending in the advancing/retreating direction. Incidentally, the biasing member setting groove 22 may be omitted when the biasing member for grasping 6 is omitted. As shown in FIG. 3, a retreating projection 23 to which the retreating end of the grasping biasing member 6 is attached is provided at the retreating end of the biasing member installation groove 22 . Further, the movable-side engaging portion 18 has a retaining groove 24 that opens toward the bearing 19 and extends in the advancing/retreating direction. A retaining piece 13 is fitted in the retaining groove 24 so as to be movable in the advance and retreat directions. As a result, when the movable-side gripping surface 21a and the fixed-side gripping surface 10a are farthest apart in the advancing/retreating direction, the retaining piece 13 comes into contact with the end of the retaining groove 24 in the advancing direction, thereby moving the movable member 3 away from the fixed member. It prevents it from falling out of 2. Note that the movable-side engaging portion 18 is an example of an engaging portion of the movable member 3 .

軸受１９は、図１、３に示すように、可動側係合部１８と平行に進退方向に延びるように形成されている。軸受１９は、軸体４の周囲を取り囲む筒状の軸受本体部１９ａと、軸受本体部１９ａの退出方向の端部に設けられたフランジ部１９ｂと、を有する。 As shown in FIGS. 1 and 3, the bearing 19 is formed to extend in the advancing/retreating direction parallel to the movable-side engaging portion 18 . The bearing 19 has a cylindrical bearing main body 19a surrounding the shaft 4, and a flange 19b provided at the end of the bearing main body 19a in the retreating direction.

軸受本体部１９ａは、軸体挿通部１４の軸体挿通孔１７の内径よりも僅かに小さい外径を有し、３つの軸体挿通部１４に進退方向に移動可能に挿入されている。軸受本体部１９ａは、その進出方向の端面が、最も進出方向側の軸体挿通部１４の軸体挿通孔１７に位置する退出位置（図示せず）から最も進出方向側の軸体挿通部１４から進出方向に突出する進出位置（図示せず）まで進退方向に移動可能に構成されている。退出位置では、抜止溝２４の進出方向の端部に抜止片１３が当接した状態となり、これにより、可動部材２の固定部材３に対する退出方向への移動が規制される。進出位置では、軸受１９のフランジ部１９ｂが最も退出方向側の軸体挿通部１４に接触した状態となり、これにより、可動部材２の固定部材３に対する進出方向への移動が規制される。軸受本体部１９ａは、その軸心を中心とする周方向の一部に半径方向に貫通して軸体４を露出させる軸体露出窓２５を有する。 The bearing body portion 19a has an outer diameter slightly smaller than the inner diameter of the shaft insertion hole 17 of the shaft insertion portion 14, and is inserted into the three shaft insertion portions 14 so as to be movable in the advancing and retreating directions. The bearing main body portion 19a has an end face in the advance direction that extends from a retracted position (not shown) where the end face in the advance direction is located in the shaft insertion hole 17 of the shaft insertion portion 14 closest to the advance direction. to an advanced position (not shown) projecting in the advancing direction from the front end. At the retracted position, the retainer piece 13 abuts the end of the retainer groove 24 in the advancing direction, thereby restricting the movement of the movable member 2 in the retracting direction with respect to the fixed member 3 . At the advanced position, the flange portion 19b of the bearing 19 comes into contact with the shaft insertion portion 14 closest to the withdrawal direction, thereby restricting the movement of the movable member 2 with respect to the fixed member 3 in the advance direction. The bearing main body portion 19a has a shaft body exposing window 25 that radially penetrates through a part of the circumferential direction about the axis thereof and exposes the shaft body 4. As shown in FIG.

軸体露出窓２５は、被取付物に設定された上下方向の下向きに開いている。すなわち、クランプ装置１がポールＰに固定された状態では、軸体露出窓２５は、図１に示すように、重力方向の下向きに開いている。軸体露出窓２５は、軸受本体部１９ａにおけるフランジ部１９ｂの近傍から進出方向側の位置まで延びるように形成されている。 The shaft exposing window 25 opens downward in the up-down direction set in the object to be attached. That is, when the clamp device 1 is fixed to the pole P, the shaft exposing window 25 opens downward in the direction of gravity as shown in FIG. The shaft exposing window 25 is formed to extend from the vicinity of the flange portion 19b of the bearing main body portion 19a to a position on the advancing direction side.

連結部２０は、可動側係合部１８の退出方向の端部から軸受１９のフランジ部１９ｂの位置まで延びるように形成されている。連結部２０には、フランジ部１９ｂが固定されている。連結部２０は、進退方向に貫通して軸受１９の内部空間と連通する円形の連通孔２６を有する。連通孔２６には、後述する軸体４が貫通している。連通孔２６は、軸受本体部１９ａの内径よりも小さい内径を有する。 The connecting portion 20 is formed to extend from the end of the movable side engaging portion 18 in the retreating direction to the position of the flange portion 19 b of the bearing 19 . A flange portion 19 b is fixed to the connecting portion 20 . The connecting portion 20 has a circular communication hole 26 penetrating in the advancing/retreating direction and communicating with the internal space of the bearing 19 . A shaft 4 , which will be described later, passes through the communication hole 26 . The communication hole 26 has an inner diameter smaller than the inner diameter of the bearing body portion 19a.

連結部２０は、図５に示すように、後述する操作用付勢部材３４の一端が挿入される円弧状の取付用穴３９を有する。 As shown in FIG. 5, the connecting portion 20 has an arc-shaped mounting hole 39 into which one end of an operation biasing member 34 (to be described later) is inserted.

連結部２０は、取付用穴３９の位置よりも外側の位置において後述する操作部材５に向かって突出する可動側阻止部５１を有する。可動側阻止部５１は、軸体４の軸心を中心とする周方向の一部の領域に亘って設けられている。可動側阻止部５１は、後述する螺合状態において軸体４と周方向に接触する締付阻止面５１ａと、後述する螺合解除状態において軸体４と周方向に接触する解除阻止面５１ｂと、を有するように形成されている。尚、可動側阻止部５１は、軸体４の周方向に間隔を空けて２つ設けられてもよい。この場合、締付阻止面５１ａと解除阻止面５１ｂは、軸体４の周方向に間隔を空けて設けられる２つの可動側阻止部５１にそれぞれ配置される。また、可動側阻止部５１は、軸体４と周方向に接触する位置であれば、固定部材２に設けられてもよい。 The connecting portion 20 has a movable-side blocking portion 51 that protrudes toward the operation member 5 described later at a position outside the position of the mounting hole 39 . The movable-side blocking portion 51 is provided over a partial area in the circumferential direction around the axial center of the shaft 4 . The movable-side blocking portion 51 includes a tightening blocking surface 51a that circumferentially contacts the shaft 4 in a threaded state described later, and a release blocking surface 51b that circumferentially contacts the shaft 4 in a threaded disengaged state described later. , is formed. Two movable-side blocking portions 51 may be provided at intervals in the circumferential direction of the shaft 4 . In this case, the tightening blocking surface 51a and the release blocking surface 51b are respectively arranged on two movable side blocking portions 51 that are spaced apart in the circumferential direction of the shaft 4 . Further, the movable-side blocking portion 51 may be provided on the fixed member 2 as long as it is in contact with the shaft 4 in the circumferential direction.

可動側把持部２１は、可動側係合部１８から軸受１９とは反対方向に延び、固定側把持部１０と進退方向に対向している。これにより、可動側把持部２１は、軸受１９に対して進退方向に直交する方向に離れた位置に配置される。可動側把持部２１は、固定側把持部１０と略同形状に形成されており、固定側把持面１０ａとの間で被固定物を把持するように進出方向に向く可動側把持面２１ａを有する。可動側把持面２１ａは、被固定物の形状に対応するように形成されている。本実施形態では、可動側把持面２１ａは、輸液スタンドのポールＰの形状に対応するように略円弧状の凹部を有している。凹部の内面は、波形に形成されており、これにより、固定側把持面１０ａとの間でポールＰを挟み込んだ状態でポールＰを滑りにくくしている。 The movable-side gripping portion 21 extends from the movable-side engaging portion 18 in the direction opposite to the bearing 19 and faces the fixed-side gripping portion 10 in the advancing/retreating direction. As a result, the movable gripping portion 21 is arranged at a position separated from the bearing 19 in the direction orthogonal to the advancing/retreating direction. The movable-side gripping portion 21 is formed in substantially the same shape as the fixed-side gripping portion 10, and has a movable-side gripping surface 21a facing in the advancing direction so as to grip an object to be fixed between it and the fixed-side gripping surface 10a. . The movable-side gripping surface 21a is formed so as to correspond to the shape of the object to be fixed. In this embodiment, the movable-side gripping surface 21a has a substantially arc-shaped concave portion corresponding to the shape of the pole P of the infusion stand. The inner surface of the recess is formed in a corrugated shape, thereby making it difficult for the pole P to slip while being sandwiched between the pole P and the fixed-side gripping surface 10a.

軸体４は、進退方向に沿って延びるように略円柱状に形成されている。軸体４は、その軸心を中心に回転自在に軸受１９の内部空間に挿入されている。軸体４は、図３に示すように、軸受１９の内部空間から退出方向に突出している。具体的には、軸体４は、軸受本体部１９ａに挿入される大径部４ａと、軸受本体部１９ａの内部空間から退出方向に突出して大径部４ａよりも外径の小さい小径部４ｂと、小径部４ｂの退出側端部に固定された操作部材５と、を有する。 The shaft 4 is formed in a substantially columnar shape so as to extend along the advancing/retreating direction. The shaft 4 is inserted into the inner space of the bearing 19 so as to be rotatable about its axis. As shown in FIG. 3, the shaft 4 protrudes from the inner space of the bearing 19 in the retreating direction. Specifically, the shaft 4 includes a large diameter portion 4a inserted into the bearing main body portion 19a and a small diameter portion 4b protruding from the inner space of the bearing main body portion 19a in the retreating direction and having an outer diameter smaller than that of the large diameter portion 4a. and an operation member 5 fixed to the exit side end of the small diameter portion 4b.

大径部４ａは、軸受本体部１９ａの内径よりも僅かに小さい外径を有する。小径部４ｂは、連結部２０の連通孔２６の内径よりも僅かに小さい外径を有する。大径部４ａと小径部４ｂとの間に形成される段差部４ｃは、連結部２０の連通孔２６の縁部に進出方向側から当接している。これにより、軸体４が退出方向に移動するときに、段差部４ｃが連結部２０を退出方向に押圧することにより、軸体４と可動部材３とが一体に退出方向に移動するように構成されている。尚、軸体４は、第１部材の一例である。 The large diameter portion 4a has an outer diameter slightly smaller than the inner diameter of the bearing body portion 19a. The small diameter portion 4 b has an outer diameter slightly smaller than the inner diameter of the communication hole 26 of the connecting portion 20 . A stepped portion 4c formed between the large-diameter portion 4a and the small-diameter portion 4b abuts the edge portion of the communication hole 26 of the connecting portion 20 from the advancing direction side. As a result, when the shaft 4 moves in the retreating direction, the stepped portion 4c presses the connecting portion 20 in the retreating direction, so that the shaft 4 and the movable member 3 move integrally in the retreating direction. It is In addition, the shaft 4 is an example of the first member.

操作部材５は、図１、３、５に示すように、作業者が把持するための把持部５ａと、軸体４の小径部４ｂが挿入される挿入空間を形成する挿入部５ｂと、挿入部５ｂから外側に突出する操作側阻止部５２と、を有する。 As shown in FIGS. 1, 3, and 5, the operation member 5 includes a gripping portion 5a to be gripped by an operator, an insertion portion 5b forming an insertion space into which the small diameter portion 4b of the shaft 4 is inserted, and an insertion portion 5b. and an operation-side blocking portion 52 projecting outward from the portion 5b.

把持部５ａの外面は、波形に形成されており、作業者が把持部５ａの外面を把持した状態で滑りにくくなっている。操作部材５は、小径部４ｂが挿入部５ｂの挿入空間に挿入された状態で小径部４ｂに固定されている。これにより、操作部材５は、軸体４と一体に進退方向に移動可能で、かつ、軸体４の軸心を中心に軸体４と一体に回転可能に構成されている。操作部材５は、可動部材３における連結部２０の退出方向側に近接する位置に挿入部５ｂが配置されるように位置している。これにより、操作部材５は、固定部材２に対して進出方向に移動するときに、挿入部５ｂが連結部２０を進出方向に押圧することにより、可動部材３および軸体４と一体に進出方向に移動するようにしている。 The outer surface of the grip portion 5a is formed in a corrugated shape, so that it is difficult for the operator to slip while gripping the outer surface of the grip portion 5a. The operation member 5 is fixed to the small diameter portion 4b in a state in which the small diameter portion 4b is inserted into the insertion space of the insertion portion 5b. As a result, the operation member 5 is configured to be movable in the advancing/retreating direction integrally with the shaft body 4 and to be rotatable integrally with the shaft body 4 about the axis of the shaft body 4 . The operation member 5 is positioned so that the insertion portion 5b is arranged at a position close to the connecting portion 20 of the movable member 3 in the withdrawal direction. As a result, when the operating member 5 moves in the advancing direction with respect to the fixed member 2, the insertion portion 5b presses the connecting portion 20 in the advancing direction, so that the operating member 5 moves in the advancing direction integrally with the movable member 3 and the shaft 4. like to move to.

挿入部５ｂは、図５に示すように、可動側阻止部５１に対して半径方向内側に位置している。挿入部５ｂは、連結部２０側に開放し、操作用付勢部材３４の他端が挿入される取付用穴３６を備える。取付用穴３６は、進退方向に連結部２０の取付用穴３９と対向するように形成されている。 The insertion portion 5b is located radially inside the movable-side blocking portion 51, as shown in FIG. The insertion portion 5b is provided with a mounting hole 36 that opens toward the connecting portion 20 and into which the other end of the biasing member 34 for operation is inserted. The mounting hole 36 is formed so as to face the mounting hole 39 of the connecting portion 20 in the advancing/retreating direction.

操作側阻止部５２は、軸体４の軸心を中心とする周方向の一部の領域に設けられている。操作側阻止部５２は、軸体４の軸心を中心とする周方向に可動側阻止部５１と接触可能な位置まで延びている。これにより、軸体４は、図６に示すように、後述する螺合解除状態において操作側阻止部５２が解除阻止面５１ｂに周方向における緩める方向に接触することにより、周方向における緩める方向の回転が規制される解除限度位置を有するように構成される。さらに、軸体４は、図７に示すように、後述する螺合状態において操作側阻止部５２が締付阻止面５１ａに周方向における締付方向に接触することにより、周方向における締付方向の回転が規制される締付限度位置を有するように構成される。 The operation-side blocking portion 52 is provided in a partial area in the circumferential direction about the axial center of the shaft 4 . The operation-side blocking portion 52 extends in the circumferential direction about the axial center of the shaft 4 to a position where it can come into contact with the movable-side blocking portion 51 . As a result, as shown in FIG. 6, the shaft body 4 is in the loosening direction in the circumferential direction by the operation-side blocking portion 52 coming into contact with the release blocking surface 51b in the loosening direction in the circumferential direction in the disengaged state described later. It is configured to have a release limit position where rotation is restricted. Further, as shown in FIG. 7, in the screwed state described later, the operation-side blocking portion 52 contacts the tightening blocking surface 51a in the tightening direction in the circumferential direction. is configured to have a tightening limit position where the rotation of is restricted.

把持用付勢部材６は、引張りばねによって形成されている。把持用付勢部材６は、可動側係合部１８の付勢部材設置溝２２に配置されている。把持用付勢部材６の進出方向の一端は、固定側係合部１１の進出側突起１２に取り付けられ、把持用付勢部材６の退出方向の一端は、可動側係合部１８の退出側突起２３に取り付けられている。把持用付勢部材６は、固定側把持部１０と可動側把持部２１とが進退方向に接触した状態で自由長又はこれよりも短い長さで自由長に設定されている。これにより、把持用付勢部材６は、固定側把持面１０ａと可動側把持面２１ａとが離れた状態では、可動側把持面２１ａが固定側把持面１０ａに対して進出する方向に付勢される付勢力を生じるようにしている。尚、把持用付勢部材６は、省略されてもよい。 The grip biasing member 6 is formed by a tension spring. The grip biasing member 6 is arranged in the biasing member installation groove 22 of the movable side engaging portion 18 . One end of the biasing member 6 for gripping in the advancing direction is attached to the protrusion 12 on the advancing side of the fixed side engaging portion 11 , and one end of the biasing member 6 for grasping in the retreating direction is attached to the retracting side of the movable side engaging portion 18 . It is attached to the protrusion 23 . The biasing member 6 for gripping is set to have a free length or a shorter length in a state where the stationary gripping portion 10 and the movable gripping portion 21 are in contact with each other in the advancing/retreating direction. As a result, when the fixed-side gripping surface 10a and the movable-side gripping surface 21a are separated from each other, the gripping biasing member 6 is biased in the direction in which the movable-side gripping surface 21a advances from the fixed-side gripping surface 10a. It is designed to generate an urging force. Incidentally, the grip biasing member 6 may be omitted.

軸体支持機構７は、図３、４に示すように、軸体４の大径部４ａに形成された雄ねじ部２７と、隣り合う軸体挿通部１４との間に配置された雌ねじ部材２８と、雌ねじ部材２８と固定部材２との間に配置されて雌ねじ部材２８を雄ねじ部２７に付勢するねじ用付勢部材２９と、を有する。 As shown in FIGS. 3 and 4, the shaft body support mechanism 7 includes a male threaded portion 27 formed in the large diameter portion 4a of the shaft body 4 and a female threaded member 28 disposed between the adjacent shaft body insertion portion 14. and a screw biasing member 29 disposed between the female threaded member 28 and the fixing member 2 to bias the female threaded member 28 toward the male threaded portion 27 .

雄ねじ部２７は、図８に示すように、大径部４ａにおいて軸体４の軸心を中心とする周方向のほぼ全周に形成されている。雄ねじ部２７の退出方向の一端は、軸受１９の軸体露出窓２５の退出方向の一端と半径方向に対向するように大径部４ａに形成されている。雄ねじ部２７の進出方向の一端は、軸体露出窓２５の進出方向の一端と半径方向に対向するように大径部４ａに形成されている。雄ねじ部２７は、その退出方向の一端から進出方向の一端まで連続して大径部４ａに形成されている（図４参照）。雄ねじ部２７のねじ山の高さは、軸受本体部１９ａの内周面よりも僅かに低くなる高さとなっている。尚、本実施形態では、雄ねじ部２７は、第１ねじ部の一例である。 As shown in FIG. 8, the externally threaded portion 27 is formed along substantially the entire circumference of the large diameter portion 4a in the circumferential direction around the axial center of the shaft body 4. As shown in FIG. One end of the male screw portion 27 in the retreating direction is formed in the large diameter portion 4 a so as to radially face one end of the shaft exposing window 25 of the bearing 19 in the retreating direction. One end of the male screw portion 27 in the advance direction is formed in the large diameter portion 4a so as to radially face one end of the shaft exposing window 25 in the advance direction. The male threaded portion 27 is formed in the large diameter portion 4a continuously from one end in the retreating direction to one end in the advancing direction (see FIG. 4). The height of the thread of the male screw portion 27 is slightly lower than the inner peripheral surface of the bearing body portion 19a. Incidentally, in the present embodiment, the male threaded portion 27 is an example of a first threaded portion.

雌ねじ部材２８は、進退方向の移動が規制されるように隣り合う軸体挿通部１４、１４の間に配置されている。本実施形態では、雌ねじ部材２８は、最も退出方向側に位置する軸体挿通部１４と該軸体挿通部１４と隣り合う軸体挿通部１４との間において、軸受１９の軸体露出窓２５と対向するように配置されている。雌ねじ部材２８は、軸体４の軸心を中心とする周方向の一部の領域に設けられる形状を有している。具体的には、雌ねじ部材２８は、図３、８、９に示すように、隣り合う軸体挿通部１４に固定された進退方向に延びるピン３１に揺動可能に取り付けられた雌ねじ本体部３７と、雌ねじ本体部３７における軸体露出窓２５側の一部において、軸体４の大径部４ａの外面における前記周方向の一部に沿うように形成された円弧面３８と、円弧面３８に形成されて雄ねじ部２７と螺合する雌ねじ部３０と、雌ねじ本体部３７から進退方向に突出して後述する規制部材５３の揺動範囲を規制する揺動範囲規制部５４と、を有する。尚、図８では、図示簡略化のため規制部材５３を省略している。 The female screw member 28 is arranged between the adjacent shaft body insertion portions 14, 14 so as to be restricted from moving forward and backward. In the present embodiment, the female screw member 28 is provided between the shaft body insertion portion 14 positioned closest to the withdrawal direction side and the shaft body insertion portion 14 adjacent to the shaft body insertion portion 14 . are arranged to face the The female screw member 28 has a shape provided in a partial area in the circumferential direction about the axial center of the shaft body 4 . Specifically, as shown in FIGS. 3, 8 and 9, the female threaded member 28 includes a female threaded main body portion 37 which is pivotably attached to a pin 31 fixed to the adjacent shaft body insertion portion 14 and extending in the advancing and retreating direction. and an arcuate surface 38 formed along a portion of the outer surface of the large-diameter portion 4a of the shaft 4 in the circumferential direction at a portion of the female screw main body 37 on the shaft exposing window 25 side, and an arcuate surface 38 and a swing range restricting portion 54 that protrudes from the female thread main body portion 37 in the advancing and retreating direction and restricts the swing range of a restricting member 53, which will be described later. In addition, in FIG. 8, the restricting member 53 is omitted for the sake of illustration simplification.

雌ねじ本体部３７は、雌ねじ部３０が雄ねじ部２７と螺合する位置（図８参照）から雌ねじ部３０が雄ねじ部２７から離れた位置（図１１参照）まで揺動可能に構成されている。 The female thread main body portion 37 is configured to be swingable from a position where the female thread portion 30 is screwed with the male thread portion 27 (see FIG. 8) to a position where the female thread portion 30 is separated from the male thread portion 27 (see FIG. 11).

ねじ用付勢部材２９は、圧縮コイルばねによって形成されている。ねじ用付勢部材２９の一端部は、第２取付部１５ｂに設けられたばね挿入穴３２に挿入されることによって第２取付部１５ｂに取り付けられている。ねじ用付勢部材２９の他端部は、雌ねじ部３０が雄ねじ部２７と螺合するように雌ねじ部材２８を付勢している。これにより、雌ねじ部３０と雄ねじ部２７とは、その螺合によって軸体４を進退方向に移動可能に支持している。尚、本実施形態では、雌ねじ部材２８は、第２ねじ部材の一例である。 The screw biasing member 29 is formed by a compression coil spring. One end of the screw biasing member 29 is attached to the second attachment portion 15b by being inserted into a spring insertion hole 32 provided in the second attachment portion 15b. The other end of the screw biasing member 29 biases the female screw member 28 so that the female threaded portion 30 is screwed with the male threaded portion 27 . Accordingly, the female threaded portion 30 and the male threaded portion 27 support the shaft body 4 so as to be movable in the advancing and retreating directions. In addition, in this embodiment, the internal thread member 28 is an example of a 2nd thread member.

螺合切換機構８は、雄ねじ部２７と雌ねじ部３０とが互いに螺合した螺合状態（図８参照）と、雌ねじ部３０が雄ねじ部２７から離れて前記螺合が解除された螺合解除状態（図１１参照）との間で軸体４の支持状態を切り換えるものである。具体的には、螺合切換機構８は、図３、９～１１に示すように、雌ねじ部３０が雄ねじ部２７から離れる方向に雌ねじ部材２８を押圧して前記螺合状態から前記螺合解除状態に軸体４の支持状態を切り換える押圧部３３と、前記螺合解除状態から前記螺合状態へ軸体４を回転させる付勢力を前記螺合解除状態にある軸体４および可動部材３に付与する操作用付勢部材３４と、雌ねじ本体部３７に揺動自在に取り付けられ、雌ねじ本体部３７の移動を規制する規制部材５３と、を有する。 The screw switching mechanism 8 has a screwed state in which the male threaded portion 27 and the female threaded portion 30 are screwed together (see FIG. 8), and a screwed state in which the female threaded portion 30 is separated from the male threaded portion 27 and the screwing is released. The support state of the shaft body 4 is switched between the state (see FIG. 11) and the state (see FIG. 11). Specifically, as shown in FIGS. 3 and 9 to 11, the screwing switching mechanism 8 presses the female threaded member 28 in the direction in which the female threaded portion 30 separates from the male threaded portion 27 to change the threaded state from the threaded state to the threaded state. and a pressing portion 33 for switching the support state of the shaft 4 to the state in which the shaft 4 is supported. The urging member 34 for operation to apply, and the restricting member 53 which is swingably attached to the female thread body portion 37 and restricts the movement of the female thread body portion 37 are provided.

押圧部３３は、軸体４の大径部４ａにおいて、軸体４の軸心を中心とする周方向の一部における雄ねじ部２７が形成されていない部分に進退方向に延びるように形成されている。これにより、軸体４は、その軸心を中心とする周方向において、雄ねじ部２７のみが設けられた螺合区域と、押圧部３３が設けられた螺合解除区域と、を有するように構成される。押圧部３３は、雄ねじ部２７の進出方向の一端から退出方向の一端まで連続して延びている。押圧部３３は、雄ねじ部２７のねじ山よりも径方向の外側に突出するように形成されている。押圧部３３の突出する高さは、図８、１１に示すように、軸受１９の内周面に近接する高さとなっている。 The pressing portion 33 is formed in the large-diameter portion 4a of the shaft 4 so as to extend in the advancing/retreating direction at a part of the circumferential direction around the axial center of the shaft 4 where the male threaded portion 27 is not formed. there is As a result, the shaft 4 is configured to have, in the circumferential direction around its axis, a threaded area where only the male threaded portion 27 is provided and a threaded release area where the pressing portion 33 is provided. be done. The pressing portion 33 continuously extends from one end of the male screw portion 27 in the advancing direction to one end in the retreating direction. The pressing portion 33 is formed to protrude radially outward beyond the thread of the male screw portion 27 . The height at which the pressing portion 33 protrudes is close to the inner peripheral surface of the bearing 19, as shown in FIGS.

押圧部３３における軸体４の軸心を中心とする周方向の長さは、雄ねじ部２７の前記周方向の長さよりも短くなっている。これにより、前記螺合区域は、前記周方向において、前記螺合解除区域よりも大きくなるように設定されている。本実施形態では、大径部４ａにおいて押圧部３３が形成された部分以外は、前記周方向において、全て雄ねじ部２７が形成されている。すなわち、前記螺合解除区域以外の区域は全て前記螺合区域となっている。本実施形態では、前記螺合区域は、軸体４の軸心を中心とした角度範囲において２９０度に設定されている。前記螺合解除区域は、軸体４の軸心を中心とした角度範囲において７０度に設定されている。 The length of the pressing portion 33 in the circumferential direction around the axis of the shaft 4 is shorter than the length of the male thread portion 27 in the circumferential direction. Thereby, the threaded area is set to be larger than the unscrewed area in the circumferential direction. In this embodiment, the male threaded portion 27 is formed in the entire circumferential direction except for the portion where the pressing portion 33 is formed in the large diameter portion 4a. That is, all areas other than the unscrewed area are the threaded area. In this embodiment, the threaded area is set to 290 degrees in the angle range around the axial center of the shaft body 4 . The unscrewed area is set at 70 degrees in the angular range about the axial center of the shaft 4 .

操作用付勢部材３４は、ねじりコイルばねによって形成されている。操作用付勢部材３４の一端は、図３に示すように、可動部材３の連結部２０の取付用穴３９に挿入され、操作用付勢部材３４の他端は、操作部材５の取付用穴３６に挿入されている。操作用付勢部材３４は、前記螺合状態では、荷重が掛けられていない状態で操作部材５および連結部２０に取り付けられている。操作用付勢部材３４は、前記螺合解除状態では、ねじりによって荷重が掛けられることにより、雄ねじ部２７と雌ねじ部３０とを螺合させる方向に軸体４を回転させる付勢力が生じるように操作部材５および連結部２０に取り付けられている。この付勢力は、操作部材５と、可動部材３の可動側係合部１８を介して固定部材２と、に伝達される。また、この付勢力は、前記螺合解除状態から前記螺合状態まで軸体４を固定部材２に対して回転させるように設定されている。これにより、作業者が操作部材５を把持していない状態では、常に、雄ねじ部２７と雌ねじ部３０とが互いに螺合した前記螺合状態になっている。尚、操作用付勢部材３４は、省略されてもよい。 The biasing member 34 for operation is formed by a torsion coil spring. One end of the operating biasing member 34 is inserted into the mounting hole 39 of the connecting portion 20 of the movable member 3 as shown in FIG. It is inserted into hole 36 . In the screwed state, the operation biasing member 34 is attached to the operation member 5 and the connecting portion 20 in a state in which no load is applied. In the unscrewed state, the operation biasing member 34 is applied with a torsional load so that a biasing force is generated to rotate the shaft 4 in the direction in which the male threaded portion 27 and the female threaded portion 30 are screwed together. It is attached to the operating member 5 and the connecting portion 20 . This biasing force is transmitted to the operating member 5 and the fixed member 2 via the movable side engaging portion 18 of the movable member 3 . Also, this biasing force is set so as to rotate the shaft body 4 with respect to the fixing member 2 from the unscrewed state to the threaded state. As a result, when the operator does not grip the operating member 5, the male threaded portion 27 and the female threaded portion 30 are always in the threaded state. Incidentally, the operation biasing member 34 may be omitted.

規制部材５３は、前記螺合状態では雌ねじ本体部３７が雄ねじ部２７から離れる方向の移動を規制する規制位置に位置するとともに、前記螺合解除状態では雌ねじ本体部３７が雄ねじ部２７から離れる方向の移動を許容する許容位置に位置するように、雌ねじ本体部３７に対して軸体４の回転に応じて移動自在に設けられている。 The restricting member 53 is located at a restricting position for restricting movement of the female thread body 37 in the direction away from the male thread 27 in the screwed state, and moves the female thread body 37 in the direction away from the male thread 27 in the unscrewed state. It is provided movably with respect to the female screw body portion 37 according to the rotation of the shaft body 4 so as to be located at an allowable position that allows the movement of the shaft body 4 .

具体的には、規制部材５３は、図９に示すように、雌ねじ本体部３７に回転可能に取り付けられ、進退方向に延びるピン５５と、ピン５５に固定され、ピン５５と一体に回転する揺動部６０と、を有する。 Specifically, as shown in FIG. 9, the restricting member 53 includes a pin 55 that is rotatably attached to the female thread main body portion 37 and extends in the advancing/retreating direction, and a rocker that is fixed to the pin 55 and rotates together with the pin 55. a moving part 60;

ピン５５は、雌ねじ部材２８の円弧面３８の近傍に配置されている。ピン５５は、その内部に組み込まれたトーションバネ（図示せず）によってピン５５の軸心を中心とする一方向に回転する付勢力を有するように構成されている。 The pin 55 is arranged near the circular arc surface 38 of the female screw member 28 . The pin 55 is configured to have an urging force to rotate in one direction around the axis of the pin 55 by a torsion spring (not shown) incorporated therein.

揺動部６０は、ピン５５への固定位置から一方側に向かって延びる基端部５３ａと、揺動中心から基端部５３ａとは反対方向に延びる規制部５３ｂと、を有する。本実施形態では、規制部材５３は、全体で略へ字状に形成されているが、これに限定されるものではなく、全体で直線状に形成されていてもよい。 The rocking portion 60 has a base end portion 53a extending toward one side from a fixed position to the pin 55, and a restricting portion 53b extending from the rocking center in the direction opposite to the base end portion 53a. In the present embodiment, the restricting member 53 is formed in a substantially V-shape as a whole, but is not limited to this, and may be formed in a straight line as a whole.

基端部５３ａは、前記螺合状態において軸体４が回転したときに、押圧部３３によって押圧可能な位置まで延びている。 The base end portion 53a extends to a position where it can be pressed by the pressing portion 33 when the shaft body 4 rotates in the screwed state.

規制部５３ｂは、ピン５５の付勢力によって雌ねじ部材２８の揺動範囲規制部５４に向けて付勢されている。規制部５３ｂは、前記螺合状態では、雌ねじ部材２８の揺動範囲規制部５４に接触した状態で、固定部材２の雌ねじ部材移動規制部５６に対して雌ねじ本体部３７の揺動方向に近接する位置まで延びている（図９参照）。これにより、前記螺合状態では、前記規制位置として雌ねじ本体部３７と雌ねじ部材移動規制部５６との間に規制部５３ｂが配置される。尚、規制部５３ｂは、前記螺合状態において雌ねじ部材移動規制部５６に僅かに接触していてもよい。 The restricting portion 53 b is biased toward the swing range restricting portion 54 of the female screw member 28 by the biasing force of the pin 55 . In the screwed state, the restricting portion 53b is in contact with the swing range restricting portion 54 of the female thread member 28, and is close to the female thread member movement restricting portion 56 of the fixing member 2 in the swinging direction of the female thread body portion 37. (See FIG. 9). As a result, in the screwed state, the restricting portion 53b is arranged between the female thread body portion 37 and the female thread member movement restricting portion 56 as the restricting position. In addition, the restricting portion 53b may be slightly in contact with the female screw member movement restricting portion 56 in the screwed state.

一方、前記螺合解除状態では、基端部５３ａが押圧部３３で押圧されることによって前記許容位置として雌ねじ本体部３７と雌ねじ部材移動規制部５６との間から離れた位置に規制部５３ｂが配置される（図１２参照）。尚、規制部材５３は省略されてもよい。 On the other hand, in the unscrewed state, the base end portion 53a is pressed by the pressing portion 33, so that the restricting portion 53b is moved to a position away from the internal thread body portion 37 and the female thread member movement restricting portion 56 as the allowable position. are placed (see FIG. 12). Note that the restricting member 53 may be omitted.

上記のように構成されたクランプ装置１は、次のようにして輸液スタンドのポールＰに取り付けられる。初期状態のクランプ装置１は、図４、８、９に示すように、雄ねじ部２７と雌ねじ部３０とが互いに螺合した螺合状態にある。 The clamp device 1 configured as described above is attached to the pole P of the infusion stand as follows. 4, 8 and 9, the clamp device 1 in the initial state is in a threaded state in which the male threaded portion 27 and the female threaded portion 30 are screwed together.

まず、作業者は、螺合状態において、固定部材２のポンプ取付部１５に医療用ポンプを取り付ける。次いで、作業者は、図６、１３に示すように、操作側阻止部５２が解除阻止面５１ｂに接触する位置まで操作部材５を回転させる。具体的には、作業者は、操作部材５を回転させて、ピン５５の付勢力に抗して、図１２に示すように、押圧部３３に規制部材５３の基端部５３ａを押圧させる。このとき、規制部５３ｂは、前記規制位置としての雌ねじ本体部３７と雌ねじ部材移動規制部５６との間からが離れるように移動する（図１２の矢印参照）。これにより、雌ねじ本体部３７は、雌ねじ部３０が雄ねじ部２７から離れる方向への移動が可能になる。次いで、作業者は、操作部材５をさらに回転させると、図１０、１１、１３に示すように、押圧部３３がねじ用付勢部材２９の付勢力に抗して雌ねじ本体部３７を雄ねじ部２７から離れる方向に押圧することにより、雌ねじ部３０が雄ねじ部２７から離れた螺合解除状態になる。 First, the operator attaches the medical pump to the pump attachment portion 15 of the fixing member 2 in a screwed state. Next, as shown in FIGS. 6 and 13, the operator rotates the operation member 5 to a position where the operation-side blocking portion 52 contacts the release blocking surface 51b. Specifically, the operator rotates the operating member 5 to cause the pressing portion 33 to press the base end portion 53a of the restricting member 53 against the biasing force of the pin 55, as shown in FIG. At this time, the restricting portion 53b moves away from the restricting position between the female thread body portion 37 and the female thread member movement restricting portion 56 (see the arrow in FIG. 12). As a result, the female thread main body portion 37 can move in the direction in which the female thread portion 30 is separated from the male thread portion 27 . 10, 11, and 13, the pressing portion 33 resists the biasing force of the screw biasing member 29 and pushes the female thread main body portion 37 toward the male thread portion. By pressing in the direction away from 27 , the female threaded portion 30 is released from the male threaded portion 27 .

次に、作業者は、操作部材５を把持した状態で、軸体４とともに可動部材３を固定部材２に対して退出方向に移動させて可動側把持面２１ａと固定側把持面１０ａとの間の間隔を広げ、輸液スタンドのポールＰを可動側把持面２１ａと固定側把持面１０ａとの間に位置させる。この状態で、作業者は、軸体４とともに可動部材３を固定部材２に対して進出方向に移動させてポールＰを可動側把持面２１ａと固定側把持面１０ａとの間に挟み込む。このとき、把持用付勢部材６の付勢力により、可動側把持面２１ａが固定側把持面１０ａに対して進出する進出方向への移動が促進される。そして、作業者は、ポールＰを可動側把持面２１ａと固定側把持面１０ａとの間に挟み込んだ状態で操作部材５から手を離す。このとき、操作用付勢部材３４の付勢力によって軸体４が雄ねじ部２７と雌ねじ部３０とを螺合させる方向（上記とは反対方向）に回転して押圧部３３による雌ねじ本体部３７の押圧が解除され、雌ねじ本体部３７がねじ用付勢部材２９の付勢力によって雄ねじ部２７に向かって移動する。その結果、雄ねじ部２７と雌ねじ部３０とが螺合した螺合状態になる（図８、１２参照）。 Next, while gripping the operating member 5, the operator moves the movable member 3 together with the shaft 4 in the retreating direction with respect to the fixed member 2 so that the gripping surface 21a on the movable side and the gripping surface 10a on the fixed side move. , and position the pole P of the infusion stand between the movable gripping surface 21a and the fixed gripping surface 10a. In this state, the operator moves the movable member 3 together with the shaft 4 in the advancing direction with respect to the fixed member 2 to sandwich the pole P between the movable side gripping surface 21a and the fixed side gripping surface 10a. At this time, the urging force of the urging member 6 for gripping promotes the movement of the movable gripping surface 21a in the advancing direction toward the fixed gripping surface 10a. Then, the operator releases the operation member 5 while holding the pole P between the movable-side gripping surface 21a and the fixed-side gripping surface 10a. At this time, the shaft 4 rotates in the direction (opposite to the above) in which the male threaded portion 27 and the female threaded portion 30 are screwed together by the biasing force of the operating biasing member 34 , and the pressing portion 33 pushes the female thread main body portion 37 . The pressure is released, and the female thread body portion 37 moves toward the male thread portion 27 by the biasing force of the screw biasing member 29 . As a result, the male threaded portion 27 and the female threaded portion 30 are screwed together (see FIGS. 8 and 12).

同時に、規制部材５３は、規制部５３ｂがピン５５の付勢力によって雌ねじ部材２８の揺動範囲規制部５４に接触する位置まで回転するとともに、規制部５３ｂが雌ねじ部材移動規制部５６に対して雌ねじ本体部３７の揺動方向に近接した状態になる（図９参照）。これにより、前記規制位置としての雌ねじ本体部３７と雌ねじ部材移動規制部５６との間に規制部５３ｂが位置することにより、雌ねじ本体部３７が雄ねじ部２７から離れる方向の移動が抑制される。 At the same time, the regulating member 53 rotates to a position where the regulating portion 53b contacts the swing range regulating portion 54 of the female threaded member 28 by the biasing force of the pin 55, and the regulating portion 53b engages the female threaded member movement regulating portion 56. It is in a state of being close to the swinging direction of the body portion 37 (see FIG. 9). As a result, the restricting portion 53b is positioned between the female thread main body portion 37 and the female screw member movement restricting portion 56, which serves as the restricting position, so that the female thread main body portion 37 is prevented from moving away from the male thread portion 27.

最後に、作業者は、図７、１４に示すように、前記螺合状態において操作側阻止部５２が締結阻止部５１ａに接触する位置まで操作部材５を回転させることにより、雄ねじ部２７と雌ねじ部３０との間のねじ作用によってポールＰを可動側把持面２１ａと固定側把持面１０ａとの間で締め付ける。このとき、雄ねじ部２７の回転によって雌ねじ部３０に雄ねじ部２７から離れる方向の押圧力が作用しても、規制部５３ｂが雌ねじ部材移動規制部５６に接触するので、雌ねじ本体部３７が雄ねじ部２７から離れる方向への移動が抑制される。 Finally, as shown in FIGS. 7 and 14, the operator rotates the operation member 5 to a position where the operation-side blocking portion 52 contacts the fastening blocking portion 51a in the screwed state, so that the male screw portion 27 and the female screw are connected. The pole P is tightened between the movable side gripping surface 21a and the fixed side gripping surface 10a by the screw action between the portion 30 and the gripping surface 21a. At this time, even if a pressing force acts on the female threaded portion 30 in a direction away from the male threaded portion 27 due to the rotation of the male threaded portion 27, the restricting portion 53b contacts the female threaded member movement restricting portion 56. Movement away from 27 is suppressed.

一方、クランプ装置１を輸液スタンドのポールＰから取り外すときは、上記とは逆の手順で行われる。具体的には、まず、作業者は、操作部材５を固定部材２に対して回転させることにより、軸体４を螺合状態から螺合解除状態にさせる。この状態で、作業者は、軸体４とともに可動部材３を固定部材２に対して退出方向に移動させて可動側把持面２１ａと固定側把持面１０ａとによるポールＰの締付を解除し、クランプ装置１をポールＰから取り外す。 On the other hand, when removing the clamp device 1 from the pole P of the infusion stand, the above procedure is reversed. Specifically, first, the operator rotates the operation member 5 with respect to the fixed member 2 to bring the shaft body 4 from the threaded state to the unscrewed state. In this state, the operator moves the movable member 3 together with the shaft 4 in the retreating direction with respect to the fixed member 2 to release the clamping of the pole P by the movable-side gripping surface 21a and the fixed-side gripping surface 10a. Remove the clamping device 1 from the pole P.

上記クランプ装置１では、軸体４は、その軸心を中心とする周方向において、雄ねじ部２７のみが設けられた螺合区域と、押圧部３３が設けられた螺合解除区域と、を有する。そのため、作業者は、雄ねじ部２７と雌ねじ部３０とが互いに螺合した螺合状態において、軸体４を固定部材２に対して回転させると、押圧部３３が雌ねじ部材２８を押圧することによって雌ねじ部３０が雄ねじ部２７から離れた螺合解除状態へ軸体４の支持状態を切り換えることができる。この螺合解除状態では、軸体４は、雌ねじ部材２８の雌ねじ部３０に拘束されることなく、進退方向に自由に移動することができるので、作業者は、固定側把持面１０ａと可動側把持面２１ａとをポールＰにスムーズに近付けることができる。 In the above clamp device 1, the shaft body 4 has, in the circumferential direction around its axis, a threaded area provided with only the male threaded portion 27 and a threaded disengagement area provided with the pressing portion 33. . Therefore, when the operator rotates the shaft 4 with respect to the fixing member 2 in the screwed state in which the male threaded portion 27 and the female threaded portion 30 are screwed together, the pressing portion 33 presses the female threaded member 28 to The support state of the shaft 4 can be switched to the unscrewed state in which the female threaded portion 30 is separated from the male threaded portion 27 . In this unscrewed state, the shaft 4 can move freely in the forward and backward directions without being restrained by the female threaded portion 30 of the female threaded member 28. The gripping surface 21a can be brought close to the pole P smoothly.

さらに、作業者は、前記螺合解除状態において、軸体４を固定部材２に対して回転させると、軸体４の支持状態を前記螺合状態に切り替えることができる。そのため、作業者は、固定側把持面１０ａと可動側把持面２１ａとをポールＰに近付けた状態において、軸体４を固定部材２に対して回転させると、雄ねじ部２７と雌ねじ部３０との間のねじ作用により、固定側把持面１０ａと可動側把持面２１ａとの間でポールＰを締め付けることができる。このように、固定部材２に対する軸体４という１つの部材を回転させるだけによってクランプ装置１をポールＰに取り付けることができるので、クランプ装置１の簡単な取付操作を実現できる。 Further, the worker can switch the support state of the shaft 4 to the screwed state by rotating the shaft 4 with respect to the fixing member 2 in the unscrewed state. Therefore, when the operator rotates the shaft body 4 with respect to the fixed member 2 in a state in which the fixed-side gripping surface 10a and the movable-side gripping surface 21a are brought close to the pole P, the male threaded portion 27 and the female threaded portion 30 are rotated. Due to the screw action between them, the pole P can be tightened between the fixed-side gripping surface 10a and the movable-side gripping surface 21a. In this manner, the clamp device 1 can be attached to the pole P simply by rotating the shaft 4 with respect to the fixed member 2, so that the clamp device 1 can be easily attached.

上記クランプ装置１では、把持用付勢部材６は、固定側把持面１０ａと可動側把持面２１ａとが離れた状態では、可動側把持面２１ａが固定側把持面１０ａに対して進出する進出方向に可動部材３を固定部材２に対して付勢するので、可動側把持面２１ａと固定側把持面１０ａとの間にポールＰを挟み込むことが容易になるとともに、クランプ装置１がポールＰから脱落しにくい。 In the clamp device 1 described above, the biasing member 6 for gripping is configured such that when the fixed gripping surface 10a and the movable gripping surface 21a are separated from each other, the movable gripping surface 21a advances toward the fixed gripping surface 10a. Since the movable member 3 is urged against the fixed member 2, the pole P can be easily sandwiched between the movable side gripping surface 21a and the fixed side gripping surface 10a, and the clamping device 1 can be disengaged from the pole P. hard to do.

上記クランプ装置１では、前記螺合区域は、軸体４の軸心を中心とする周方向において、前記螺合解除区域よりも大きいので、雄ねじ部２７と雌ねじ部３０とが螺合する面積が大きい。そのため、押圧部３３が軸体４の大径部４ａに設けられていても、ポールＰを可動側把持面２１ａと固定側把持面１０ａとの間で締め付ける締付力を確保することができる。 In the above-described clamp device 1, the threaded area is larger than the unscrewed area in the circumferential direction around the axis of the shaft 4, so the area where the male threaded portion 27 and the female threaded portion 30 are screwed together is large. big. Therefore, even if the pressing portion 33 is provided on the large-diameter portion 4a of the shaft 4, it is possible to secure a tightening force for tightening the pole P between the movable-side gripping surface 21a and the fixed-side gripping surface 10a.

上記クランプ装置１では、軸体４の軸心を中心とする周方向において、前記螺合解除区域以外の区域は全て前記螺合区域なので、押圧部３３が雌ねじ部材２８を押圧していない状態では、常に、雄ねじ部２７と雌ねじ部３０とが螺合した螺合状態になる。そのため、作業者が、軸体４を固定部材２に対して回転させたときに、雄ねじ部２７と雌ねじ部３０との螺合を誤って解除してしまうことが抑制される。 In the above-described clamping device 1, in the circumferential direction around the axis of the shaft body 4, all areas other than the unscrewed area are the screwed areas, so when the pressing portion 33 does not press the female thread member 28, , the male screw portion 27 and the female screw portion 30 are always screwed together. Therefore, when the operator rotates the shaft 4 with respect to the fixing member 2 , it is possible to prevent the threaded engagement between the male threaded portion 27 and the female threaded portion 30 from being erroneously released.

上記クランプ装置１では、操作用付勢部材３４は、前記螺合解除状態から前記螺合状態へ軸体４を固定部材２に対して回転させるための付勢力を前記螺合解除状態にある軸体４および固定部材２に付与するので、作業者は、前記螺合解除状態において、操作部材５から手を離すだけで、前記螺合解除状態から前記螺合状態となる方向へ軸体４を回転させることができる。そのため、作業者は、軸体４を固定部材２に対して僅かに回転させるだけで、ポールＰを可動側把持面２１ａと固定側把持面１０ａとの間で締め付けることができる。そのため、クランプ装置１の取付作業が簡単である。 In the clamp device 1 described above, the biasing member 34 for operation applies a biasing force for rotating the shaft body 4 with respect to the fixing member 2 from the unscrewed state to the unscrewed state. Since it is applied to the body 4 and the fixing member 2, the operator can move the shaft 4 in the direction from the unscrewed state to the screwed state simply by releasing the operating member 5 in the unscrewed state. can be rotated. Therefore, the operator can tighten the pole P between the movable-side gripping surface 21a and the fixed-side gripping surface 10a only by slightly rotating the shaft 4 with respect to the fixed member 2 . Therefore, the mounting work of the clamp device 1 is simple.

上記クランプ装置１では、操作用付勢部材３４は、軸体４を固定部材２に対して前記螺合解除状態から前記螺合状態まで回転させる付勢力を有するので、作業者は、前記螺合解除状態において、操作部材５から手を離すだけで、雄ねじ部２７と雌ねじ部３０とが互いに螺合した螺合状態にさせることができる。そのため、可動側把持面２１ａおよび固定側把持面１０ａの位置が固定された状態で、ポールＰを可動側把持面２１ａと固定側把持面１０ａとの間で締め付けることができる。 In the clamp device 1 described above, the operation biasing member 34 has a biasing force that rotates the shaft 4 with respect to the fixing member 2 from the unscrewed state to the threaded state. In the released state, the male threaded portion 27 and the female threaded portion 30 can be brought into a screwed state by simply releasing the operating member 5 . Therefore, the pole P can be clamped between the movable gripping surface 21a and the fixed gripping surface 10a while the positions of the movable gripping surface 21a and the fixed gripping surface 10a are fixed.

上記クランプ装置１では、前記螺合状態では、前記規制位置として、雌ねじ本体部３７と雌ねじ部材移動規制部５６との間に規制部５３ｂが位置している。そのため、作業者が、可動側把持面２１ａと固定側把持面１０ａの間でポールＰを締め付ける方向に軸体４を回転させるときに、雄ねじ部２７の回転によって雌ねじ部３０に雄ねじ部２７から離れる方向の押圧力が作用しても、規制部５３ｂが雌ねじ部材移動規制部５６に接触することにより、雌ねじ本体部３７の雄ねじ部２７から離れる方向への移動が抑制される。そのため、クランプ装置１がポールＰから外れてしまうことが抑制される。 In the clamp device 1 described above, the restricting portion 53b is located between the female thread main body portion 37 and the female thread member movement restricting portion 56 as the restricting position in the screwed state. Therefore, when the operator rotates the shaft 4 in the direction to tighten the pole P between the movable-side gripping surface 21a and the fixed-side gripping surface 10a, the rotation of the male threaded portion 27 causes the female threaded portion 30 to move away from the male threaded portion 27. Even if a directional pressing force is applied, the restricting portion 53b contacts the female screw member movement restricting portion 56, so that the female screw body portion 37 is restrained from moving away from the male screw portion 27. As shown in FIG. Therefore, the clamp device 1 is prevented from coming off the pole P.

一方、作業者は、前記螺合状態から前記螺合解除状態に向けて操作部材５を回転すると、基端部５３ａが押圧部３３によって押圧されることにより、前記許容位置として、雌ねじ本体部３７と雌ねじ部材移動規制部５６との間から離れた位置に規制部５３ｂが移動するので、前記螺合解除状態では、雌ねじ本体部３７が雄ねじ部２７から離れる方向の移動が可能になる。 On the other hand, when the operator rotates the operating member 5 from the screwed state toward the unscrewed state, the base end portion 53a is pressed by the pressing portion 33, and the internal thread body portion 37 is set as the allowable position. and the female screw member movement restricting portion 56, the female thread body portion 37 can move away from the male thread portion 27 in the unscrewed state.

このように、固定部材２に対する軸体４という１つの部材を回転させるだけで、雌ねじ本体部３７の移動の許否を切り換えることができるので、クランプ装置１がポールＰから外れてしまうことを抑制しつつ、クランプ装置１の簡単な取付操作を実現できる。 In this way, only by rotating the shaft 4 with respect to the fixing member 2, it is possible to switch permission/prohibition of the movement of the female thread main body portion 37, thereby suppressing the clamp device 1 from coming off the pole P. At the same time, a simple mounting operation of the clamp device 1 can be realized.

上記クランプ装置１では、雌ねじ部材２８は、進退方向の移動が規制されるように進退方向に隣り合う軸体挿通部１４の間に取り付けられているので、雌ねじ部材２８が進退方向にずれてしまうことが軸体挿通部１４によって抑制される。そのため、雌ねじ部３０と雄ねじ部２７との間に生じるねじ作用が強力であり、固定側把持面１０ａと可動側把持面２１ａとの間でポールＰを強力に締め付けることができる。 In the above-described clamp device 1, the female screw member 28 is attached between the shaft body insertion portions 14 adjacent to each other in the advance and retreat direction so that movement in the advance and retreat direction is restricted, so the female screw member 28 is displaced in the advance and retreat direction. This is suppressed by the shaft insertion portion 14 . Therefore, the screw action generated between the female threaded portion 30 and the male threaded portion 27 is strong, and the pole P can be strongly tightened between the fixed side gripping surface 10a and the movable side gripping surface 21a.

上記クランプ装置１では、固定側把持面１０ａと可動側把持面２１ａは、軸受１９に対して進退方向に直交する方向に離れた位置に配置されているので、固定側把持面１０ａと可動側把持面２１ａとが軸体４の軸線上に位置する場合に比べて、クランプ装置１の進退方向における長さが短い。そのため、クランプ装置１は、コンパクトな形態である。 In the above-described clamp device 1, the fixed-side gripping surface 10a and the movable-side gripping surface 21a are arranged at positions separated from the bearing 19 in the direction orthogonal to the advancing/retreating direction. Compared to the case where the surface 21 a is positioned on the axis of the shaft 4 , the length of the clamp device 1 in the advance and retreat direction is shorter. Therefore, the clamping device 1 has a compact form.

上記クランプ装置１では、軸受１９は、軸体４の周囲を取り囲む軸受本体部１９ａと、受本体部１９ａを半径方向に貫通して軸体４を露出させる軸体露出窓２５と、を有するので、雌ねじ部３０と雄ねじ部２７との螺合を軸体露出窓２５によって可能にしつつ、埃や薬液等が雄ねじ部２７に付着することを軸受本体部１９ａによって抑制することができる。 In the clamp device 1, the bearing 19 has the bearing main body portion 19a surrounding the periphery of the shaft body 4, and the shaft exposing window 25 that radially penetrates the receiving main body portion 19a and exposes the shaft body 4. The shaft exposing window 25 allows screwing between the female threaded portion 30 and the male threaded portion 27, while the bearing body portion 19a prevents dust, chemical solution, etc. from adhering to the male threaded portion 27.

上記クランプ装置１では、軸体露出窓２５が、被取付物に設定された上下方向の下向きに開いているので、クランプ装置１が被固定物に固定された状態においてポンプ取付部１５に取り付けられた医療用ポンプから薬液が漏れたとしても、その薬液が軸体露出窓２５を通して雄ねじ部２７に付着してしまうことがより確実に抑制される。特に、複数のクランプ装置１がポールＰの上下方向に取り付けられている場合であっても、上方に位置する医療用ポンプから薬液が漏れて下方に位置するクランプ装置１に向かって落下したとしても、その薬液は軸受本体部１９ａに当たり、薬液が雄ねじ部２７に付着することがより確実に抑制される。 In the above-described clamp device 1, the shaft exposing window 25 opens downward in the vertical direction set in the object to be fixed. Even if the liquid medicine leaks from the medical pump, the liquid medicine is prevented from adhering to the male screw portion 27 through the shaft exposing window 25 more reliably. In particular, even when a plurality of clamp devices 1 are attached to the pole P in the vertical direction, even if the liquid medicine leaks from the medical pump located above and falls toward the clamp device 1 located below. , the chemical hits the bearing main body portion 19a, and adhesion of the chemical to the male screw portion 27 is more reliably suppressed.

上記クランプ装置１では、固定側係合部１１と可動側係合部１８とは、互いに進退方向への移動を許容しつつ、進退方向と直交する方向への移動を規制するように互いに係合しているので、可動部材３及び固定部材２は、進退方向と直交する方向への移動が規制される。そのため、可動部材２と固定部材３との間で進退方向と直交する方向の曲げ剛性の高い係合状態が実現される。特に、可動側把持面２１ａと固定側把持面１０ａとが進退方向と直交する方向に軸受１９から離れて配置されている場合のように把持力の反力が軸受１９に曲げ力として大きく伝わるときに有効である。 In the clamp device 1 described above, the fixed side engaging portion 11 and the movable side engaging portion 18 are engaged with each other so as to restrict movement in a direction orthogonal to the forward/backward direction while allowing movement in the forward/backward direction. Therefore, the movable member 3 and the fixed member 2 are restricted from moving in the direction orthogonal to the forward/backward direction. Therefore, an engagement state with high bending rigidity in the direction perpendicular to the advancing/retreating direction is realized between the movable member 2 and the fixed member 3 . In particular, when the reaction force of the gripping force is largely transmitted to the bearing 19 as a bending force, such as when the movable gripping surface 21a and the fixed gripping surface 10a are separated from the bearing 19 in the direction orthogonal to the advancing/retreating direction. effective for

上記クランプ装置１では、可動部材３の連結部２０は、前記締付限度位置において操作部材５の可動側阻止部５２と周方向における締付方向に接触する締付阻止面５１ａを有するので、作業者は、前記螺合解除状態から前記螺合状態に軸体４を回転したい場合に、前記螺合解除状態から前記螺合状態を経てさらに前記螺合解除状態まで軸体４を回転してしまうことを防止することができる。 In the above-described clamp device 1, the connecting portion 20 of the movable member 3 has the tightening blocking surface 51a that contacts the movable side blocking portion 52 of the operating member 5 in the tightening direction in the circumferential direction at the tightening limit position. When a person wants to rotate the shaft body 4 from the unscrewed state to the threaded state, the shaft body 4 is rotated from the unscrewed state to the unscrewed state through the threaded state. can be prevented.

上記クランプ装置１では、可動部材３の連結部２０は、前記解除限度位置において操作部材５の可動側阻止部５２と周方向における緩める方向に接触する解除阻止面５１ｂを有するので、作業者は、前記螺合状態から前記螺合解除状態に軸体４を回転したい場合に、前記螺合状態から前記螺合解除状態を経てさらに前記螺合状態まで軸体４を回転してしまうことを防止することができる。 In the above-described clamping device 1, the coupling portion 20 of the movable member 3 has the unlocking prevention surface 51b that contacts the movable-side blocking portion 52 of the operating member 5 in the loosening direction in the circumferential direction at the unlocking limit position. To prevent the shaft 4 from being rotated from the threaded state to the threaded state through the threaded state released when the shaft 4 is to be rotated from the threaded state to the threaded state released. be able to.

以上に説明した第１実施形態のクランプ装置１は、本発明の一実施形態であり、その具体的構成については、本発明の趣旨を逸脱しない範囲で適宜変更可能である。以下、第１実施形態の変形例について説明する。第１実施形態と同様の機能を有する要素については、第１実施形態と同様の符号を付して、その説明を省略する。 The clamp device 1 of the first embodiment described above is one embodiment of the present invention, and its specific configuration can be changed as appropriate without departing from the gist of the present invention. Modifications of the first embodiment will be described below. Elements having functions similar to those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and descriptions thereof are omitted.

上記第１実施形態のクランプ装置１では、第１部材を軸体４とし、第２部材を固定部材２としたが、第１部材を固定部材２とし、第２部材を軸体４としてもよい。この場合、図１５に示すように、軸体４には、第２ねじ部材としての雄ねじ部材４１が取り付けられている。雄ねじ部材４１は、軸体４に取り付けられたねじ用付勢部材４２によって軸体４から突出する方向に付勢されている。固定部材２には、第１ねじ部としての雌ねじ部４３と、雄ねじ部材４１を雌ねじ部４３から離れる方向に雄ねじ部材４１を押圧する押圧部４４と、が設けられる。押圧部４４は、雌ねじ部４３よりも雄ねじ部材４１に向けて突出するように形成される。 In the clamp device 1 of the first embodiment, the first member is the shaft 4 and the second member is the fixing member 2, but the first member may be the fixing member 2 and the second member may be the shaft 4. . In this case, as shown in FIG. 15, a male screw member 41 is attached to the shaft 4 as a second screw member. The male screw member 41 is biased in a direction of protruding from the shaft 4 by a screw biasing member 42 attached to the shaft 4 . The fixing member 2 is provided with a female threaded portion 43 as a first threaded portion and a pressing portion 44 that presses the male threaded member 41 in a direction away from the female threaded portion 43 . The pressing portion 44 is formed to protrude toward the male threaded member 41 more than the female threaded portion 43 .

変形例のクランプ装置では、作業者が軸体４を回転させると、押圧部４４がねじ用付勢部材４２の付勢力に抗して雄ねじ部材４１を雌ねじ部４３から離れる方向に押圧するので、雄ねじ部材４１と雌ねじ部４３との螺合が解除される。反対に、押圧部４４が雄ねじ部材４１から離れると、雄ねじ部材４１は、ねじ用付勢部材４２の付勢力によって雌ねじ部４３に押し付けられて雌ねじ部４３と螺合する。そのため、変形例のクランプ装置においても、軸体４を回転させるだけで、前記螺合状態と前記螺合解除状態との間で軸体４の支持状態を切り換えることができる。 In the modified clamping device, when the operator rotates the shaft 4, the pressing portion 44 presses the male threaded member 41 away from the female threaded portion 43 against the biasing force of the screw biasing member 42. The male threaded member 41 and the female threaded portion 43 are disengaged. Conversely, when the pressing portion 44 is separated from the male threaded member 41 , the male threaded member 41 is pressed against the female threaded portion 43 by the biasing force of the screw biasing member 42 and is screwed with the female threaded portion 43 . Therefore, in the clamp device of the modified example as well, the support state of the shaft 4 can be switched between the screwed state and the unscrewed state simply by rotating the shaft 4 .

上記第１実施形態のクランプ装置１では、押圧部３３は、雄ねじ部２７のねじ山から突出するように形成したが、雄ねじ部２７から進退方向に離れた位置に形成されてもよい。この場合、雌ねじ部材２８の進退方向の長さは、押圧部３３が雌ねじ部材２８を押圧できるように、押圧部３３と雄ねじ部２７との間の進退方向の間隔に対応させる。 In the clamping device 1 of the first embodiment, the pressing portion 33 is formed so as to protrude from the screw thread of the male threaded portion 27, but may be formed at a position away from the male threaded portion 27 in the advancing/retreating direction. In this case, the length of the female threaded member 28 in the forward/backward direction corresponds to the interval in the forward/backward direction between the pressing portion 33 and the male threaded portion 27 so that the pressing portion 33 can press the female threaded member 28 .

上記第１実施形態のクランプ装置１では、把持用付勢部材６は、可動側把持面２１ａが固定側把持面１０ａに対して進出する進出方向に可動部材３を固定部材２に対して付勢したが、可動側把持面２１ａが固定側把持面１０ａに対して退出する退出方向に可動部材３を固定部材２に対して付勢してもよい。このようにすると、前記螺合解除状態では、可動側把持面２１ａと固定側把持面１０ａとの間の間隔が広がる方向に可動部材が固定部材に対して移動するので、可動側把持面２１ａと固定側把持面１０ａとの間にポールＰを位置させやすくなる。 In the clamping device 1 of the first embodiment, the grip biasing member 6 biases the movable member 3 against the fixed member 2 in the advancing direction in which the movable gripping surface 21a advances from the fixed gripping surface 10a. However, the movable member 3 may be biased with respect to the fixed member 2 in the retreating direction in which the movable-side gripping surface 21a retreats from the fixed-side gripping surface 10a. With this configuration, in the unscrewed state, the movable member moves relative to the fixed member in the direction in which the distance between the movable gripping surface 21a and the fixed gripping surface 10a widens. It becomes easier to position the pole P between the fixed-side gripping surface 10a.

上記第１実施形態のクランプ装置１では、前記螺合区域は、軸体４の軸心を中心とする周方向において、前記螺合解除区域よりも大きくされたが、前記螺合区域は、軸体４の軸心を中心とする周方向において、前記螺合解除区域よりも小さくてもよい。 In the clamp device 1 of the first embodiment, the threaded area is larger than the unscrewed area in the circumferential direction around the axis of the shaft 4. In the circumferential direction around the axis of body 4, it may be smaller than the unscrewed area.

上記第１実施形態のクランプ装置１では、軸体４の軸心を中心とする周方向において、前記螺合解除区域以外の区域は全て前記螺合区域としたが、前記螺合解除区域以外の区域に雄ねじ部２７が形成されていない区域が形成されていてもよい。 In the clamping device 1 of the first embodiment, in the circumferential direction around the axial center of the shaft 4, all areas other than the unscrewed area are set as the threaded area. A region in which the externally threaded portion 27 is not formed may be formed in the region.

上記第１実施形態のクランプ装置１では、操作用付勢部材３４は、前記螺合解除状態にある軸体４を固定部材２に対して前記螺合状態まで回転させる付勢力を有するように設定されたが、この付勢力は、前記螺合解除状態にある軸体４を固定部材２に対して前記螺合状態に向かって回転させる力であれば足りる。 In the clamping device 1 of the first embodiment, the biasing member 34 for operation is set to have a biasing force that rotates the shaft 4 in the unscrewed state with respect to the fixing member 2 to the threaded state. However, it is sufficient that this biasing force is a force that rotates the shaft body 4 in the unscrewed state with respect to the fixing member 2 toward the screwed state.

上記第１実施形態のクランプ装置１では、規制部材５３は、雌ねじ部材２８の雌ねじ本体部３７に取り付けられたが、固定部材２に取り付けられてもよい。この場合、規制部材５３は、前記螺合状態では、雌ねじ部材移動規制部５６と雌ねじ本体部３７との間に規制部５３ｂが位置するとともに、前記螺合解除状態では、押圧部３３によって基端部５３ａが押圧されることによって規制部５３ｂが移動することにより、雌ねじ部材移動規制部５６と雌ねじ本体部３７との間から離れた位置に規制部５３ｂが位置するように構成される。 In the clamping device 1 of the first embodiment, the restricting member 53 is attached to the female thread main body portion 37 of the female thread member 28 , but may be attached to the fixing member 2 . In this case, the regulating member 53 has the regulating portion 53b positioned between the female screw member movement regulating portion 56 and the female thread main body portion 37 in the screwed state, and the proximal end by the pressing portion 33 in the unscrewed state. When the portion 53a is pressed, the restricting portion 53b is moved, so that the restricting portion 53b is positioned away from between the female screw member movement restricting portion 56 and the female screw body portion 37. As shown in FIG.

このようにすると、作業者が、可動側把持面２１ａと固定側把持面１０ａの間でポールＰを締め付ける方向に軸体４を回転させるときに、雄ねじ部２７の回転によって雌ねじ部３０に雄ねじ部２７から離れる方向の押圧力が作用しても、雌ねじ本体部３７が規制部５３ｂに接触するとともに、その規制部５３ｂが雌ねじ部材移動規制部５６に接触するので、雌ねじ本体部３７の雄ねじ部２７から離れる方向への移動が抑制される。そのため、クランプ装置１がポールＰから外れてしまうことが抑制される。 With this configuration, when the operator rotates the shaft 4 in a direction to tighten the pole P between the movable gripping surface 21a and the fixed gripping surface 10a, the rotation of the male threaded portion 27 causes the male threaded portion to be attached to the female threaded portion 30. 27, the female thread main body 37 contacts the restricting portion 53b, and the restricting portion 53b contacts the female thread member movement restricting portion 56. Movement away from is suppressed. Therefore, the clamp device 1 is prevented from coming off the pole P.

上記クランプ装置１では、規制部材５３は、雌ねじ部材２８に取り付けられたが、図１５に示す変形例のクランプ装置では、軸体４に形成された規制部材５８が設けられてもよい。具体的には、軸体４は、その外面から半径方向内側に凹み、雄ねじ部材４１が嵌まり込むことが可能な凹部５９を有する。凹部５９は、軸体４の周方向の長さにおいて雄ねじ部材４１よりも長くなるように形成されている。規制部材５８は、凹部５９の内面から軸体４の周方向に突出している。 In the clamp device 1 described above, the regulating member 53 is attached to the female screw member 28, but in the modified clamp device shown in FIG. Specifically, the shaft 4 has a recess 59 that is recessed radially inward from its outer surface and into which the male threaded member 41 can be fitted. The recessed portion 59 is formed to be longer than the externally threaded member 41 in the circumferential direction of the shaft 4 . The restricting member 58 protrudes from the inner surface of the recess 59 in the circumferential direction of the shaft 4 .

図１５に示す変形例のクランプ装置では、雄ねじ部材４１と規制部材５８とは、前記螺合状態において軸体４の半径方向に重なる規制位置に位置している。そのため、作業者が螺合状態において被固定物を締め付ける方向に軸体４を回転させるときに、雄ねじ部材４１に雌ねじ部４３から離れる方向の押圧力が作用しても、雄ねじ部材４１は規制部材５８に接触するので、雄ねじ部材４１が雌ねじ部４３から離れてしまうことが規制される。一方、作業者が前記螺合状態から前記螺合解除状態に向けて軸体４を回転させると、雄ねじ部材４１は、押圧部４４に接触することにより、軸体４の回転方向とは反対方向に押圧されるとともに、雌ねじ部４３から離れる方向に押圧される。このとき、規制部材５８は、雄ねじ部材４１に対して軸体４の周方向に離れる方向に移動するので、雄ねじ部材４１と軸体４の半径方向に重ならない許容位置に位置している。そのため、雄ねじ部材４１は、凹部５９に移動可能となり、雌ねじ部４３から離れる方向の移動が許容される。 In the clamp device of the modified example shown in FIG. 15, the male screw member 41 and the regulating member 58 are located at the regulating position where they overlap in the radial direction of the shaft 4 in the screwed state. Therefore, when the operator rotates the shaft body 4 in the direction of tightening the object to be fixed in the threaded state, even if a pressing force acts on the male threaded member 41 in a direction away from the female threaded portion 43, the male threaded member 41 does not act as a regulating member. 58 , the male threaded member 41 is restricted from being separated from the female threaded portion 43 . On the other hand, when the operator rotates the shaft 4 from the screwed state toward the unscrewed state, the male screw member 41 comes into contact with the pressing portion 44 and rotates in a direction opposite to the rotation direction of the shaft 4 . is pressed toward and away from the female screw portion 43 . At this time, the regulating member 58 moves away from the male threaded member 41 in the circumferential direction of the shaft 4 , so that the male threaded member 41 and the shaft 4 are positioned at an allowable position where they do not overlap in the radial direction. Therefore, the male screw member 41 is allowed to move into the concave portion 59 and move away from the female screw portion 43 .

上記第１実施形態のクランプ装置１では、固定側把持面１０ａと可動側把持面２１ａとは、軸受１９から進退方向に直交する方向に離れた位置に配置されたが、軸体４の軸線上に配置されてもよい。この場合、軸体４の進出方向の一端は、軸心を中心に回転自在に可動側把持部２１に取り付けられる。可動側把持部２１は、進退方向に移動可能に固定部材２に取り付けられる。可動部材３の可動側係合部１８と軸受１９と連結部２０とは省略されてもよい。一方、固定部材２は、固定側把持面１０ａが可動側把持面２１ａと軸体４の軸線上において進退方向に対向するように形成される。 In the clamping device 1 of the first embodiment, the stationary gripping surface 10a and the movable gripping surface 21a are arranged at positions separated from the bearing 19 in the direction perpendicular to the advancing/retreating direction. may be placed in In this case, one end of the shaft body 4 in the advance direction is attached to the movable side grip part 21 so as to be rotatable around the axis. The movable-side grip part 21 is attached to the fixed member 2 so as to be movable in the advancing and retreating directions. The movable-side engaging portion 18, the bearing 19, and the connecting portion 20 of the movable member 3 may be omitted. On the other hand, the fixed member 2 is formed such that the fixed side gripping surface 10a faces the movable side gripping surface 21a on the axis of the shaft 4 in the advance and retreat direction.

上記第１実施形態のクランプ装置１では、可動部材３及び固定部材２は、進退方向への移動を許容しつつ、進退方向と直交する方向への移動を規制するように互いに係合する可動側係合部１８及び固定側係合部１１をそれぞれ有したが、可動側係合部１８および固定側係合部１１は省略されてもよい。この場合、可動部材３の可動側把持部２１は、連結部２０と一体に形成される。一方、固定部材２の固定側把持部１０は、可動側把持部２１と進退方向に対向するように軸体挿通部１４と一体に形成される。 In the clamping device 1 of the first embodiment, the movable member 3 and the fixed member 2 are movable sides that engage with each other so as to restrict movement in a direction orthogonal to the forward/backward direction while allowing movement in the forward/backward direction. Although the engaging portion 18 and the fixed side engaging portion 11 are provided, the movable side engaging portion 18 and the fixed side engaging portion 11 may be omitted. In this case, the movable gripping portion 21 of the movable member 3 is formed integrally with the connecting portion 20 . On the other hand, the stationary gripping portion 10 of the stationary member 2 is integrally formed with the shaft insertion portion 14 so as to face the movable gripping portion 21 in the advancing/retreating direction.

１ クランプ装置
２ 固定部材
３ 可動部材
４ 軸体
６ 把持用付勢部材
７ 軸体支持機構
８ 螺合切換機構
１０ａ 固定側把持面
１１ 係合部
１８ 係合部
１９ 軸受
２７ 第１ねじ部
２８ 第２ねじ部材
３３ 押圧部
３４ 操作用付勢部材
５１ａ 締付阻止面
５１ｂ 解除阻止面
５３ 規制部材
５３ａ 基端部
５３ｂ 規制部 REFERENCE SIGNS LIST 1 clamping device 2 fixed member 3 movable member 4 shaft 6 biasing member for gripping 7 shaft support mechanism 8 screw switching mechanism 10a fixed side gripping surface 11 engaging portion 18 engaging portion 19 bearing 27 first screw portion 28 second 2 screw member 33 pressing portion 34 biasing member for operation 51a tightening prevention surface 51b release prevention surface 53 restricting member 53a base end portion 53b restricting portion

Claims (14)

固定側把持面を有する固定部材と、
前記固定側把持面との間で被固定物を把持する可動側把持面を有し、前記可動側把持面が前記固定側把持面に対して進退可能となるように前記固定部材に取り付けられた可動部材と、
前記可動部材の進退方向に沿って延びるとともに、前記進退方向に前記可動部材と一体に移動可能で、かつ、軸心を中心に回転自在に前記可動部材に取り付けられた軸体と、
前記固定部材及び前記軸体のうちの一方の第１部材に設けられた第１ねじ部と、前記固定部材及び前記軸体のうちの他方の第２部材に取り付けられ、前記軸心を中心とする周方向の一部の領域に設けられた第２ねじ部材と、前記第２部材と前記第２ねじ部材との間に設けられ、前記第２ねじ部材を前記第１ねじ部に付勢するねじ用付勢部材と、を有し、前記第１ねじ部と前記第２ねじ部材との螺合により前記進退方向に移動可能となるように前記軸体を支持する軸体支持機構と、
前記第１ねじ部と前記第２ねじ部材とが互いに螺合した螺合状態と、前記第２ねじ部材が前記第１ねじ部から離れて前記螺合が解除された螺合解除状態との間で前記軸体の支持状態を切り換える螺合切換機構と、を備え、
前記螺合切換機構は、前記第１部材において、前記周方向の一部の領域において前記進退方向に沿って延びるとともに、前記第１ねじ部よりも前記第２ねじ部材に向けて突出し、前記第２ねじ部材を前記第１ねじ部から離れる方向に前記第２ねじ部材を押圧する押圧部を有し、
前記第１部材は、前記軸心を中心とする周方向において、前記第１ねじ部のみが設けられた螺合区域と、前記押圧部が設けられた螺合解除区域と、を有する、
クランプ装置。 a fixed member having a fixed-side gripping surface;
It has a movable gripping surface that grips an object to be fixed between itself and the fixed gripping surface, and is attached to the fixed member so that the movable gripping surface can move forward and backward with respect to the fixed gripping surface. a movable member;
a shaft body extending along the advancing/retreating direction of the movable member, movable integrally with the movable member in the advancing/retreating direction, and attached to the movable member so as to be rotatable about an axis;
A first threaded portion provided on a first member of one of the fixed member and the shaft, and a second member of the other of the fixed member and the shaft, and a threaded portion centered on the shaft center. a second screw member provided in a partial region in the circumferential direction of the second screw member, and a second screw member provided between the second member and the second screw member to bias the second screw member toward the first screw portion; a shaft body support mechanism having a screw biasing member, the shaft body supporting mechanism supporting the shaft body so as to be movable in the advancing/retreating direction by screwing the first threaded portion and the second threaded member together;
Between a threaded state in which the first threaded portion and the second threaded member are threaded together and a disengaged state in which the second threaded member is separated from the first threaded portion and the threaded engagement is released a screwing switching mechanism for switching the support state of the shaft in
The thread switching mechanism extends along the advancing/retreating direction in a partial region in the circumferential direction of the first member, protrudes toward the second threaded member from the first threaded portion, and extends in the first member. 2 has a pressing portion that presses the second screw member in a direction away from the first screw portion;
The first member has, in a circumferential direction around the axis, a threaded region provided with only the first threaded portion and a threaded disengagement region provided with the pressing portion.
clamping device. 前記可動側把持面が前記固定側把持面に対して進出する進出方向に向けて前記可動部材を前記固定部材に対して付勢する把持用付勢部材を更に備える、
請求項１に記載のクランプ装置。 further comprising a gripping biasing member that biases the movable member against the fixed member in an advance direction in which the movable gripping surface advances with respect to the fixed gripping surface;
2. A clamping device according to claim 1. 前記螺合区域は、前記軸心を中心とする前記周方向において、前記螺合解除区域よりも大きい、
請求項１又は２に記載のクランプ装置。 The threaded area is larger than the unscrewed area in the circumferential direction about the axial center,
3. A clamping device according to claim 1 or 2. 前記軸心を中心とする前記周方向において、前記螺合解除区域以外の区域は全て前記螺合区域である、
請求項３に記載のクランプ装置。 In the circumferential direction around the axial center, all areas other than the unscrewed area are the threaded areas.
4. A clamping device according to claim 3. 前記螺合切換機構は、前記螺合解除状態から前記螺合状態へ前記第１部材を前記第２部材に対して回転させるための付勢力を前記螺合解除状態にある前記第１部材および前記第２部材に付与する操作用付勢部材を有する、
請求項１～４のいずれか１項に記載のクランプ装置。 The screw switching mechanism applies a biasing force for rotating the first member with respect to the second member from the unscrewed state to the unscrewed state. having an operating biasing member applied to the second member;
A clamping device according to any one of claims 1-4. 前記操作用付勢部材は、前記第１部材を前記第２部材に対して前記螺合解除状態から前記螺合状態まで回転させる付勢力を有する、
請求項５に記載のクランプ装置。 The operation biasing member has a biasing force that rotates the first member with respect to the second member from the unscrewed state to the threaded state.
6. A clamping device according to claim 5. 前記固定部材は、前記進退方向に間隔を空けて配置され、前記軸体を前記進退方向に移動可能に挿通させる軸体挿通孔を備える複数の軸体挿通部を有し、
前記第２ねじ部材は、前記進退方向の移動が規制されるように前記進退方向に隣り合う前記軸体挿通部の間に取り付けられている、
請求項１～６のいずれか１項に記載のクランプ装置。 The fixing member has a plurality of shaft insertion portions arranged at intervals in the advancing/retreating direction and having shaft insertion holes through which the shafts are inserted so as to be movable in the advancing/retreating direction,
The second screw member is mounted between the shaft body insertion portions adjacent to each other in the advancing and retreating direction so that movement in the advancing and retreating direction is restricted.
Clamping device according to any one of claims 1-6. 前記螺合切換機構は、前記螺合状態では前記第２ねじ部材が前記第１ねじ部から離れる方向の移動を規制する規制位置に位置するとともに、前記螺合解除状態では、前記第２ねじ部材が前記第１ねじ部から離れる方向の移動を許容する許容位置に位置するように、前記第２ねじ部材に対して前記軸体の回転に応じて移動自在に設けられた規制部材を備える、
請求項１～７のいずれか１項に記載のクランプ装置。 The screw switching mechanism is positioned at a restricting position for restricting movement of the second screw member in a direction away from the first screw portion in the screwed state, and the second screw member in the unscrewed state. a regulating member provided movably with respect to the second screw member according to the rotation of the shaft body so that the is positioned at an allowable position that allows movement in a direction away from the first screw portion;
Clamping device according to any one of claims 1-7. 前記規制部材は、前記第２ねじ部材に対して揺動自在に取り付けられ、その揺動中心から一方側に向かって延びる基端部と、前記揺動中心から前記基端部とは反対方向に延びる規制部と、を有し、
前記第２部材としての前記固定部材は、前記第２ねじ部材が前記第１ねじ部から離れる方向において前記第２ねじ部材から間隔を空けて配置された第２ねじ部材移動規制部を有し、
前記規制部材は、前記螺合状態において前記第２ねじ部材と前記第２ねじ部材移動規制部との間に前記規制部が配置される前記規制位置と、前記螺合解除状態において前記基端部が前記押圧部で押圧されることによって前記第２ねじ部材と前記第２部材との間から離れた位置に前記規制部が配置される前記許容位置と、の間で揺動自在に前記第２ねじ部材に取り付けられている、
請求項８に記載のクランプ装置。 The regulating member is attached to the second screw member so as to be swingable, and has a base end portion extending from the swing center toward one side and a base end portion extending from the swing center in a direction opposite to the base end portion. a regulating portion extending;
The fixing member as the second member has a second threaded member movement restricting portion spaced apart from the second threaded member in a direction in which the second threaded member separates from the first threaded portion,
The restricting member has the restricting position where the restricting portion is arranged between the second screw member and the second screw member movement restricting portion in the screwed state, and the base end portion in the unscrewed state. is pressed by the pressing portion so that the second screw can swing freely between the allowable position where the restricting portion is arranged at a position separated from the space between the second screw member and the second member. attached to the threaded member,
9. A clamping device according to claim 8. 前記可動部材は、前記軸体の周囲を取り囲んだ状態で前記固定部材に対して前記進退方向に移動可能で、かつ、前記軸心を中心に回転自在に前記軸体を支持する筒状の軸受を有し、
前記固定側把持面と前記可動側把持面とは、前記軸受から前記進退方向に直交する方向に離れた位置に配置されている、
請求項１～９のいずれか１項に記載のクランプ装置。 The movable member is a cylindrical bearing that surrounds the shaft and is movable in the advancing and retreating directions with respect to the fixed member and supports the shaft rotatably around the axis. has
The fixed-side gripping surface and the movable-side gripping surface are arranged at positions separated from the bearing in a direction perpendicular to the advancing/retreating direction.
Clamping device according to any one of claims 1-9. 前記軸受は、前記軸体の周囲を取り囲む軸受本体部と、前記軸受本体部を半径方向に貫通して前記軸体を露出させる軸体露出窓と、を有する、
請求項１０に記載のクランプ装置。 The bearing has a bearing body surrounding the shaft, and a shaft exposing window that radially penetrates the bearing body and exposes the shaft.
11. A clamping device according to claim 10. 前記固定部材は、前記クランプ装置が前記被固定物に固定された状態における上下方向が設定された被取付物を取り付けるための取付部を有し、
前記軸体露出窓は、前記被取付物に設定された上下方向の下向きに開いている、
請求項１１に記載のクランプ装置。 The fixing member has a mounting portion for mounting an object to be fixed, the vertical direction of which is set in a state in which the clamp device is fixed to the object to be fixed, and
The shaft exposing window opens downward in the up-down direction set in the attached object,
12. A clamping device according to claim 11. 前記可動部材及び前記固定部材は、前記進退方向への移動を許容しつつ、前記進退方向と直交する方向への移動を規制するように互いに係合する係合部をそれぞれ有する、
請求項９～１２のいずれか１項に記載のクランプ装置。 The movable member and the fixed member each have an engaging portion that engages with each other so as to restrict movement in a direction orthogonal to the forward/backward direction while allowing movement in the forward/backward direction.
Clamping device according to any one of claims 9-12. 前記軸体は、前記螺合状態において前記周方向における締付方向の回転が規制される締付限度位置と、前記螺合解除状態において前記周方向における緩める方向の回転が規制される解除限度位置と、を有し、
前記可動部材と前記固定部材のうちの少なくとも一方は、前記締付限度位置において前記軸体と前記周方向における締付方向に接触する締付阻止面と、前記解除限度位置において前記軸体と前記周方向における緩める方向に接触する解除阻止面と、を有する、
請求項１～１３のいずれか１項に記載のクランプ装置。 The shaft body has a tightening limit position where rotation in the tightening direction in the circumferential direction is restricted in the threaded state, and a release limit position where rotation in the loosening direction in the circumferential direction is restricted in the unscrewed state. and
At least one of the movable member and the fixed member has a tightening prevention surface that contacts the shaft in the tightening direction in the circumferential direction at the tightening limit position, and a releasing prevention surface that contacts in the loosening direction in the circumferential direction,
Clamping device according to any one of claims 1-13.
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Citations (3)

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JP2007125248A (en) 2005-11-04 2007-05-24 Terumo Corp Clamp device
JP2009045114A (en) 2007-08-14 2009-03-05 Terumo Corp Clamp device
JP2015042895A (en) 2013-07-22 2015-03-05 Ｎｋワークス株式会社 Clamp device and transfusion pump device having the same

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US9399479B1 (en) * 2015-07-08 2016-07-26 Right View Limited Cup holder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007125248A (en) 2005-11-04 2007-05-24 Terumo Corp Clamp device
JP2009045114A (en) 2007-08-14 2009-03-05 Terumo Corp Clamp device
JP2015042895A (en) 2013-07-22 2015-03-05 Ｎｋワークス株式会社 Clamp device and transfusion pump device having the same

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