JP6008652B2 - Drip stand - Google Patents

Description

  The present invention relates to an infusion stand that supports a treatment liquid container such as an infusion bag, an infusion bottle, or an infusion bag that contains a treatment liquid such as a drug solution or blood necessary for patient treatment. In particular, the present invention provides an infusion stand in which a support for supporting a treatment liquid container is detachable from a base having casters or the like, and the treatment liquid container can be transferred to a patient bed or a wheelchair together with the support. About.

  Conventionally, an infusion stand as described in Japanese Patent Application Laid-Open No. 2011-10682 (Patent Document 1) has been used in the treatment of transfusing a treatment liquid such as a drug solution, blood, electrolyte, or water to a patient. The drip stand has a support fixed to a base that can be slid by a caster or the like. A treatment liquid container such as an infusion bag is suspended from this support, or a medical device such as a pump or a sensor is attached to the drip stand. It is designed to be supported by mounting.

  By the way, there is a case where it is necessary to move a patient in a state where an infusion or drip is applied. For example, the case where a hospitalized patient is moved to an examination room, a treatment room, or an operating room can be mentioned.

  However, conventionally, an infusion stand is provided for each hospital room or examination room. When moving a patient, the treatment liquid container or medical device removed from the infusion stand installed in the room before the movement is used for movement. After moving it on the bed, it was necessary to replace it with an infusion stand installed in the room after the movement. For this reason, there has been a problem that much labor and time are spent in the work of detaching the treatment liquid container and the medical device from the drip stand. In addition, such work requires great care so as not to cause accidents such as collapse of the tube or disconnection of the wiring.

  In order to cope with such a problem, WO02 / 15837A1 (Patent Document 2) describes a structure in which a support supporting a treatment liquid container can be extracted upward from a base having casters and the like. It has been proposed that the drip stand column can be used as it is as a bed mounting column by removing the base while being supported by a connector provided on the bed.

  However, in the drip stand disclosed in Patent Document 2, after the column is supported by the bed coupling tool, the entire bed must be lifted upward in order to remove the column upward from the base. There was a problem that it was cumbersome and time consuming. It is also possible to leave the base without removing it from the support after the bed support is supported by the bed connector, but the base protruding from the support will interfere with the treatment, and the person in charge of treatment will be This is not realistic because there is a risk of tripping over and various medical devices being caught on the base.

JP 2011-10682 A WO02 / 15837A1

  The present invention has been made in the background as described above, and the problem to be solved is that the column supporting the infusion bag and the like can be easily and quickly attached to and detached from the base. An object of the present invention is to provide an infusion stand having a novel structure in which a column can be easily transferred to a bed or the like.

A first aspect of the present invention includes a support column that supports a treatment liquid container, and a base that is provided separately from a patient support device that supports a patient and is slidable independently of the patient support device . The drip stand is configured so that the lower part of the support column is detachably attached to the base, and an opening that opens toward the side in the horizontal direction is opened and closed in the base possible and have been provided with a chuck member, the lower portion of the strut in the open state of the open mouth of the chuck member with allowing out from the side, the lower portion of the support posts in the closed state of the open mouth of the chuck member It features an infusion stand that can be held and supported.

  In the drip stand according to this aspect, by using an openable / closable chuck member, the column can be attached and detached by inserting and removing the column from the side. Thereby, when removing the support from the base, it is not necessary to lift the support up every time, and the work of moving the support to the bed or the like can be performed easily and quickly.

  According to a second aspect of the present invention, in the drip stand according to the first aspect, the first spring means for holding the chuck member in the closed state is provided, and the holding force to the closed state by the first spring means is provided. In contrast, an opening operation means for operating the chuck member in the opening direction is provided.

  In the drip stand of this aspect, it is possible to maintain the state in which the chuck is closed and the column is held using the urging force of the first spring means, and the column can be stably held by the chuck member. Further, by providing the opening operation means, it is possible to easily release the holding state of the support by the first spring means and remove the support from the base.

  According to a third aspect of the present invention, in the drip stand according to the second aspect, the second spring means for holding the chuck member in an open state is provided, and the first spring means and the second spring means are provided. Thus, the chuck member is selectively held in an open state and a closed state.

  In the drip stand of this aspect, the operation state of the chuck member is alternatively expressed in an open state in which the column can be attached and detached and a closed state in which the column is held. Therefore, it is possible to stably perform the attaching / detaching operation of the support column in the open state of the chuck member, and to realize stable holding of the support column in the closed state of the chuck member.

  According to a fourth aspect of the present invention, in the drip stand according to the third aspect, the first spring means and the second spring means are constituted by one spring member.

  In the drip stand of this aspect, the first spring means for holding the chuck member in the closed state and the second spring means for holding the chuck member in the open state can be realized with a small number of parts and space saving by one spring member.

  According to a fifth aspect of the present invention, in the drip stand according to the fourth aspect, a pair of semicircular opening / closing members combined in an openable / closable manner are used as the chuck member, and the bottom and both sides are used as the spring member. A groove-shaped metal spring comprising a wall is used, the metal spring is disposed behind the opening / closing shaft of the pair of opening / closing members, and the tip portions of both side walls of the metal spring are connected to each one of the pair of opening / closing members. And when the opening / closing member is in a closed state, the metal spring is positioned on the support column side of the opening / closing shaft of the opening / closing member, and the opening / closing member is open in the opened state. The elastic force in the approaching direction of the both side walls of the metal spring is the holding force to the closed state and the open state to the open / close member so as to be on the opposite side of the support column from the open / close shaft of As selectively exerted as It is intended.

  In the drip stand of this aspect, the chuck member and the first and second spring means for selectively elastically holding the chuck member in the open state and the closed state are effectively provided with a small number of parts and a simple structure. It can be realized. The opening / closing shafts of the pair of opening / closing members do not need to be shaft members that directly connect the pair of opening / closing members to each other. For example, as shown in an embodiment described later, the pair of opening / closing shafts is based on a biasing force of a metal spring. An operation or virtual opening / closing axis may be configured by holding the members in a combined state.

  According to a sixth aspect of the present invention, in the drip stand according to the fifth aspect, the pair of opening / closing members are disposed in a closed state while disposing a pressing member behind the opening / closing shaft of the pair of opening / closing members. By pressing the pressing member from the back side, the opening and closing shafts of the pair of opening and closing members are pushed out from the locking position of the metal spring toward the support column, and the pair of opening and closing members are operated in the opening direction. The opening operation means is constituted by providing a member.

  In the drip stand of this aspect, by applying human power to the external operation member from the outside, an operating force in the opening direction is exerted on the pair of opening and closing members that are incorporated in the inside of the base and held in the closed state. I can do it. Thereby, it becomes possible to easily take out the column supported by the pair of opening and closing members with good workability by an external operation.

  According to a seventh aspect of the present invention, in the drip stand according to the sixth aspect, the external operation member that operates the pressing member with an external input has a foot pedal structure, and the external operation member A drive rod that transmits the applied external input to the pressing member is provided, and a stopper piece that prevents displacement of the pair of opening and closing members in the opening direction is formed on the drive rod, and the external operation member When the drive rod is displaced, the stopper piece is disengaged from the displacement preventing position with respect to the pair of opening / closing members, and the opening operation of the pair of opening / closing members is allowed.

  In the drip stand according to this aspect, the pair of opening and closing members can be opened without using a hand by the external operation member having a foot pedal structure, and the work is facilitated. In addition, the opening operation of the pair of opening / closing members is blocked by the stopper piece unless the external operation member is stepped on, so that an accident that the pair of opening / closing members open unexpectedly due to an external force or an erroneous operation is prevented. The

  According to an eighth aspect of the present invention, in the drip stand according to any one of the fifth to seventh aspects, each of the pair of opening / closing members has a longitudinal structure extending in the vertical direction with a semicircular cross-sectional shape. It is.

  In the drip stand according to this aspect, it is possible to efficiently exert a large holding force on the support column with a small number of opening and closing members. In addition, the number of parts can be reduced by reducing the number of opening / closing members while sufficiently securing the holding force to the support column, and the opening / closing operation of the opening / closing member and the simplification of the operation mechanism of the closing operation can be realized. .

  According to a ninth aspect of the present invention, in the infusion stand according to any one of the first to eighth aspects, the base is provided with a housing in which an accommodation space for accommodating the chuck member is formed, The receiving space is provided with a side window portion that opens to the side, and the support column can be inserted and removed from the side through the side window portion with respect to the opened chuck member. On the other hand, a lid that covers the side window is provided in the housing, and the side window is covered by the lid between the lid and the chuck member. A lock mechanism that locks and holds the chuck member in a closed state is provided.

  In the drip stand of this aspect, since the support part by the chuck member of the support column is covered by the housing and the lid, the protection effect of various mechanisms of the support part is exhibited, and the design effect by the cover part is also exhibited. . Furthermore, the lock mechanism that functions by closing the lid can surely prevent the support state of the column by the chuck member from being released unexpectedly, thereby improving safety. Further, if the lock mechanism is released in conjunction with the opening of the lid, it is possible to avoid troubles in the operation of removing the column from the chuck member due to the provision of the lock mechanism.

  According to a tenth aspect of the present invention, there is provided the drip stand according to any one of the first to ninth aspects, wherein the base is provided with an axial support portion that positions and supports the lower portion of the support column in the axial direction. Is.

  In the drip stand of this aspect, in addition to the chuck member that exerts a supporting force in a direction perpendicular to the axis with respect to the support column, an axial support unit that exerts an axial supporting force with respect to the support column is provided to share the support function of the support column. By doing so, it is possible to efficiently obtain a greater support force for the support column.

  An eleventh aspect of the present invention is the drip stand according to any one of the first to tenth aspects, wherein in the base, a circumferential positioning in which a lower portion of the support column is positioned in a circumferential direction around a central axis. Means are provided.

  In the drip stand of this aspect, the support column from which the infusion bag or the like is suspended is prevented from being inadvertently rotated by an external impact or the like. Therefore, the trouble that the circumferential position of the infusion bag or the like or the infusion line suspended from the support column changes unexpectedly due to the rotation of the support column is avoided.

Twelfth aspect of the present invention, in the IV pole according to the first to eleventh one embodiment the the base for the frame to be fixed to the patient support apparatus provided separately Providing a fixed support portion for fixedly supporting the lower portion of the support column, and in the support state of the support column by the chuck member of the base, in the axial direction of the support column, the position of the frame at the position away from the chuck member. A fixed support portion is provided so that the support column supported by the chuck member of the base can be simultaneously supported by the fixed support portion of the frame, and the chuck member of the base and the fixed support portion of the frame The support by the chuck member of the base and the fixed support portion of the frame is released from the support state of the support by both of the support and the support between the base and the frame. What can be delivered A.

  In the drip stand according to this aspect, the support supported by the base is easily, safely, stably, and quickly transferred to patient support devices such as various beds and wheelchairs for movement, examination, and treatment. It becomes possible to do. In particular, when such a support is moved, the support is transferred from one of the base and the patient support device to the other through a state in which the support is simultaneously supported by both the base and the patient support device. However, it is not necessary for the person in charge to support the gravity of the support column on which the treatment liquid container is suspended, and the transfer of the support column can be performed safely with little effort.

  A thirteenth aspect of the present invention is the infusion stand according to the twelfth aspect, wherein the fixed support portion in the frame positions and supports a lower portion of the column in a direction perpendicular to the axis, and And a mounting portion that positions and supports the lower portion in the axial direction.

  In the drip stand of this aspect, in the patient support device, the support force in the direction perpendicular to the axis of the support column and the support force in the axial direction can be set to be shared between the gripping unit and the mounting unit, so It becomes possible to efficiently obtain a larger support force.

  A fourteenth aspect of the present invention is the drip stand according to the thirteenth aspect, wherein in the mounting portion, the inclining position is projected toward the lower end of the support column gripped by the gripping portion, An engaging member for positioning the lower end of the column in the direction perpendicular to the axis is provided by being held in an engaged state with the lower end of the column, and the engaging member is displaced downward from the protruding position to disengage the column. A release operation member for releasing engagement with the lower end is provided, and the release operation member is moved by bringing the base closer to the frame when the support is transferred between the base and the frame. The engaging member is released from the engagement by being pressed by the member on the base side.

  In the drip stand according to this aspect, the lower end of the support column can be reliably positioned and held with a simple structure by the engaging member in a state where the frame is attached to the mounting portion. In addition, the engaging member is released by merely bringing the base close to the frame without requiring a special releasing operation, and therefore does not hinder the operation of moving the support column from the frame to the base.

  According to a fifteenth aspect of the present invention, there is provided the drip stand according to the fourteenth aspect, wherein an engagement recess is provided in the lower end surface of the support column, and the engagement member is protruded. Thus, the engaging recess is inserted from below to engage with the concave and convex portions.

  In the drip stand of this aspect, the engagement structure of the engagement member to the lower end surface of the support column can be realized more compactly. That is, it is possible to realize a locking structure by forming a cup-shaped recess in the distal end surface of the engagement member and fitting the lower end of the support column into this recess, By fitting the engaging member from the lower end surface of the support toward the inside, it is possible to realize the engagement structure of the merged member to the lower end surface of the support with a smaller size.

  A sixteenth aspect of the present invention is the drip stand according to the fourteenth or fifteenth aspect, wherein the gripping part constituting the fixed support part is openable and closable in the open state. A pair of frame side opening and closing members that constitute a frame side chuck member that allows the lower part of the frame to be inserted and removed from the side and that holds and supports the lower part of the column in the closed state, and opens the pair of frame side opening and closing members. The frame-side spring member that is selectively held in the closed position and the pair of frame-side opening / closing members that are disposed in the back of the pair of frame-side opening / closing members and that are closed are pressed by pressing from the back. A frame-side pressing member to be operated, and an external operating force applied to the frame-side pressing member to drive the frame-side pressing member against the pair of frame-side opening / closing members from the back. The frame-side opening and closing member and the opening operation allowed to frame side external operating member, is what is composed comprise.

  In the drip stand according to this aspect, the pair of frame side opening / closing members are selectively positioned by the frame side spring member between the open state and the closed state. Can be clearly and selectively expressed, and can be stably switched between gripping and releasing of the column.

  A seventeenth aspect of the present invention is the drip stand according to the sixteenth aspect, wherein the pair of frame side opening / closing members are held in a closed state to be opened from the closed state of the pair of frame side opening / closing members. An opening operation restricting means for preventing the operation to the state is provided, and the pair of the opening operation restricting means by the pair of the frame side opening and closing members by the frame side pressing member by the frame side external operation member. In this way, the open state of the frame side opening and closing member is prevented from being interlocked.

  In the drip stand according to this aspect, since the opening operation restricting means prevents unexpected opening operation of the pair of frame side opening / closing members that are closed by holding the column, the holding of the column is realized more stably. obtain. In addition, the open operation blocking state of the pair of frame side opening / closing members by the opening operation restricting means is released with the operation of the frame side external operation member for opening the pair of frame side opening / closing members. By providing the operation restricting means, the opening operation of the pair of frame side opening / closing members is not significantly complicated.

  An eighteenth aspect of the present invention is the drip stand according to the sixteenth or seventeenth aspect, wherein the first safety lock mechanism that prevents displacement due to an external operation force in the frame side external operation member is provided. Provided, and on the condition that the operation of releasing the first safety lock mechanism has been performed, the frame-side external operation member is allowed to drive the frame-side pressing member against the pair of frame-side opening / closing members. It is what I did.

  In the drip stand of this aspect, the first safety lock mechanism that prevents the displacement of the external operation member itself is provided, so that even if other members hit the external operation member unexpectedly, for example, a pair of The frame-side opening / closing member does not open unexpectedly, and the holding state of the support can be reliably maintained.

  A nineteenth aspect of the present invention is the drip stand according to any one of the sixteenth to eighteenth aspects, wherein the frame is provided with a frame-side housing that houses the frame-side opening / closing member. In addition, the frame side housing is provided with a side window portion that opens to the side, and through the side window portion, the support column is viewed from the side with respect to the frame side opening / closing member that is opened. On the other hand, a frame-side lid that covers the side window in the frame-side housing is provided so as to be openable and closable, and between the frame-side lid and the frame-side opening and closing member. A second safety lock mechanism is provided for locking and holding the frame side opening / closing member in a closed state with the side window covered by the frame side lid.

  In this aspect, as long as the frame side lid member constituting the second safety lock mechanism is not opened, the gripping state of the column by the pair of frame side opening / closing members can be more reliably and stably maintained. The opening operation of the frame side opening / closing member can also be effectively prevented.

  In the drip stand having the structure according to the present invention, the support can be attached to and detached from the base by pulling out the support from the side without lifting the support upward. Therefore, for example, the operation of moving the column to the bed or the like can be easily and quickly performed.

The front view which shows the whole drip stand structure as one Embodiment of this invention. The perspective view which shows the whole drip stand structure shown in FIG. The perspective view which shows the state which removed the support | pillar from the base in the drip stand shown in FIG. Side surface explanatory drawing which shows the support | pillar which comprises the drip stand shown in FIG. The longitudinal cross-sectional view which shows the base which comprises the drip stand shown in FIG. Explanatory drawing which expands and shows the axial direction support part of the support | pillar in the base shown in FIG. VII-VII sectional drawing in FIG. VIII-VIII sectional drawing in FIG. The cross-sectional view corresponding to FIG. 7 which shows the open state of a pair of opening-and-closing member provided in the base. XX sectional drawing in FIG. The rear view which shows the closed state of a pair of opening-and-closing member provided in the base. XII-XII sectional drawing in FIG. Explanatory drawing which shows the external operation member in a base. The principal part enlarged view for demonstrating the action | operation of the external operation member shown by FIG. The perspective view which shows the structure of the fixed support part with which a patient support apparatus is mounted | worn and supports a support | pillar. The perspective view which shows the support state of the support | pillar by the fixed support part shown in FIG. Explanatory drawing for demonstrating operation which delivers and transfers a support | pillar to the bed which is a patient support apparatus using the drip stand shown in FIG. The principal part expansion longitudinal cross-sectional view for demonstrating delivery operation | movement of the support | pillar shown in FIG.17 (b). The perspective view which shows the whole structure in the state which removed the cover body in the drip stand as 2nd embodiment of this invention. The principal part side view which shows the state which the stopper piece blocked | prevented the displacement to the opening direction of a pair of opening-and-closing member in the drip stand shown by FIG. FIG. The principal part side view which shows the state which the stopper piece was cancelled | released in the drip stand shown by FIG. 19, and a pair of opening-and-closing member was opened. FIG. A frame structure including a fixed support portion that is mounted on a patient support device and supports a support column, and is configured with a structure different from that shown in FIG. 15 and is used by being combined with the drip stand shown in FIG. The longitudinal cross-sectional view which shows the holding | grip state of the support | pillar by a frame structure. FIG. 25 is a perspective view showing a lower fixed support portion constituting the frame structure shown in FIG. 24 from obliquely above. FIG. 26 is a perspective view showing the lower fixed support portion shown in FIG. 25 from obliquely below. It is a longitudinal cross-sectional view of the lower fixed support part shown by FIG. 25, Comprising: XXVII-XXVII sectional drawing in FIG. XXVIII-XXVIII sectional drawing in FIG. The longitudinal cross-sectional view equivalent to the XXIX-XXIX cross section in FIG. 28 which shows another operation state in the downward fixed support part shown by FIG. FIG. 25 is a first state explanatory view for explaining an operation of transferring a column supported by the frame structure shown in FIG. 24 to the drip stand shown in FIG. 19. FIG. 25 is a second state explanatory view for explaining an operation of delivering the column supported by the frame structure shown in FIG. 24 to the drip stand shown in FIG. 19. FIG. 25 is a third state explanatory view for explaining an operation of delivering the column supported by the frame structure shown in FIG. 24 to the drip stand shown in FIG. 19. The perspective view which shows the upper fixed support part which comprises the frame structure shown by FIG. 24 from diagonally upward. FIG. 34 is a perspective plan view of the upper fixed support portion shown in FIG. 33. FIG. 34 is a transparent side view of the upper fixed support portion shown in FIG. 33. XXXVI-XXXVI sectional drawing in FIG. XXXVII-XXXVII sectional drawing in FIG. XXXVIII-XXXVIII sectional drawing in FIG. XXXIX-XXXIX sectional drawing in FIG. XL-XL sectional drawing in FIG. XLI-XLI sectional view in FIG. FIG. 42 is an explanatory view showing an open state of the pair of frame side opening / closing members in the upper fixed support portion shown in FIG. 41.

  Embodiments of the present invention will be described below with reference to the drawings. First, in FIGS. 1-3, the drip stand 10 as one Embodiment of this invention is shown. In the drip stand 10, a support 12 is supported by a base 14, and the support 12 is detachable from the base 14 as shown in FIGS. 2 and 3. In the following description, the vertical direction refers to the vertical direction corresponding to the vertical direction in FIG.

  In more detail, the support | pillar 12 is made into the straight rod shape extended up and down, as the enlarged front view is shown by FIG. The strut 12 may have a single non-stretchable structure, but preferably employs a telescopic structure with a telescopic structure by inserting and combining a plurality of hollow tubes. A support arm 16 that protrudes in the horizontal direction is provided at the upper end portion of the column 12, and the treatment liquid container 18, various devices, and the like can be suspended and supported by the support arm 16.

  In addition, an annular protrusion 20 that protrudes on the outer peripheral surface is integrally formed at the lower end portion of the column 12. For example, the cup-shaped end cap 22 having a flange portion at the periphery of the opening is fitted and fixed to the lower end of the support column 12, whereby the annular protrusion 20 can be formed by the flange portion of the end cap 22.

  On the other hand, the base 14 includes a central circular block-shaped hub portion 24 as shown in an enlarged longitudinal sectional view in FIG. 5, and a plurality of leg portions extending radially from the hub portion 24. 26 is formed. Further, a caster 28 is provided at the tip of each leg portion 26, and the base 14 can be slid on the floor by the rolling of the caster 28.

  The hub portion 24 is provided with a housing 30 that protrudes upward, and the lower portion of the support column 12 is inserted into and supported in the housing 30. The housing 30 is fixed to the hub portion 24 with fixing bolts 31 and the like.

  The housing 30 has a hollow structure in which an accommodation space 32 is formed, and a side window portion 34 is provided on the peripheral wall of the housing 30. ing. The side window 34 is formed over substantially the entire length of the housing 30 in the vertical direction, and the accommodation space 32 is opened to the outside through the side window 34. The housing 30 is provided with a lid 36 that covers the side window 34 with a hinge structure, and the side window 34 can be opened and closed by the lid 36.

  Further, a U-shaped insertion notch 40 that opens to the side window portion 34 side is formed in the central portion of the upper wall portion 38 of the accommodation space 32. The support column 12 supported at the lower part in the housing 30 is projected upward through the insertion notch 40.

  On the other hand, a support piece 42 is provided below the accommodation space 32 of the base 14 so as to protrude from the inner surface of the peripheral wall into the accommodation space 32 at a predetermined height. Then, as shown in an enlarged perspective view in FIG. 6, the lower end portion of the support column 12 accommodated in the housing 30 is placed on the support piece 42 so that the support column 42 is mounted on the support member 42. It is positioned and supported in the axial direction at the lower part in the axial direction. In the present embodiment, the support piece 42 constitutes an axial support portion.

  In the accommodation space 32, a lower space 44 is formed below the support piece 42. The lower space 44 is made longer than the axial length of the column 12 below the annular protrusion 20. Further, with the support piece 42 supporting the annular protrusion 20, a space for delivering the strut is secured below the lower end surface of the strut 12 with a predetermined size.

  Further, a chuck member 46 for positioning and supporting the column 12 in the direction perpendicular to the axis is incorporated in the center to the upper part of the accommodation space 32. The chuck member 46 is configured by combining a pair of opening and closing members 48a and 48b so as to be openable and closable, as shown in an enlarged cross-sectional view and vertical cross-sectional view in FIGS.

  That is, the opening / closing members 48a and 48b are combined so that the other end side in the circumferential direction can be opened and closed by rotating around the opening / closing shaft 49 set on the one end side in the circumferential direction. . In particular, in the present embodiment, the opening / closing members 48a and 48b are each constituted by a longitudinal groove-shaped member having a substantially semicircular cross-sectional shape and a longitudinal structure extending in the vertical direction by a predetermined length.

  In the closed state, both end surfaces in the circumferential direction of the pair of opening / closing members 48a and 48b are overlapped with each other to form a circular cross-section gripping hole 50 extending in the vertical direction. Also, from such a closed state, the front (right side in FIG. 7) overlapping surfaces of the pair of opening / closing members 48a, 48b are opened to each other, and the back of the pair of opening / closing members 48a, 48b (left in FIG. 7). The pair of opening / closing members 48a, 48b are rotated relative to each other with the opening / closing shaft 49 in the vicinity of the outer peripheral end portion of the side surface of the overlapping surface, so that the open state shown in FIG.

  Further, in the closed state, a fitting protrusion 51 having a predetermined size is formed in cooperation with the front of the chuck member 46 (to the right in FIG. 7) across the abutting portions of the pair of opening and closing members 48a and 48b. Has been. The fitting protrusions 51 have a truncated conical shape protruding toward the front of the chuck member 46, and a plurality (two in this embodiment) are formed apart from each other in the height direction of the chuck member 46. ing. In addition, a fitting hole 52 having a hole inner surface shape corresponding to the fitting protrusion 51 is formed on the inner surface of the lid body 36 at each corresponding position of the fitting protrusion 51. When the lid body 36 is closed under the closed state of the opening / closing members 48a and 48b, the fitting protrusion 51 is fitted into the fitting hole 52 and positioned. Thereby, under the closed state of the lid body 36, the opening operation of the pair of opening and closing members 48a and 48b is prevented based on the engaging action of the fitting protrusion 51 by the fitting hole 52. A lock mechanism for preventing erroneous opening of the members 48a and 48b is configured.

  Further, as shown in FIGS. 11 and 12, the pair of opening / closing members 48a and 48b protrudes from one end of the pair of opening / closing members 48a and 48b toward the other between the end portions in the circumferential direction. Engagement protrusions 53a and 53b are integrally formed around the other rear surface. The pair of opening and closing members 48a and 48b are positioned in the vertical direction by the engaging action of the engaging protrusions 53a and 53b, and the horizontal direction is the opening direction of the pair of opening and closing members 48a and 48b. They are positioned relative to each other even in one direction.

  As shown in FIG. 12, the rear surface of the other opening and closing members 48a and 48b in the engaging projections 53a and 53b protruding from the one of the pair of opening and closing members 48a and 48b on the other rear surface. The opposing surface is inclined in a taper shape. In the closed state of the pair of opening / closing members 48a, 48b, a gap 54 is formed between the opposing surfaces of the engaging protrusions 53a, 53b facing the rear surfaces of the other opening / closing members 48a, 48b.

  Due to the gap 54, the opening operation with the opening / closing shaft 49 in the vicinity of the outer peripheral end portion of the overlapping surface on the back side as described above in the pair of opening / closing members 48a, 48b is allowed even in the presence of the engaging protrusions 53a, 53b. ing. Further, when the pair of opening and closing members 48a and 48b are relatively displaced in the opening direction, the gap 54 disappears and the engagement protrusions 53a and 53b abut against the rear surfaces of the opening and closing members 48a and 48b, so The relative displacement ends in the opening direction of the members 48a and 48b are defined. The opening direction ends of the pair of opening / closing members 48a, 48b are provided with a relative displacement restricting means in the opening direction separately from the engaging projections 53a, 53b, or the pair of opening / closing members 48a, 48b It can also be defined by the contact structure.

  Further, the pair of opening / closing members 48a and 48b are formed with engaging grooves 56a and 56b extending in the vertical direction at both side portions sandwiching the overlapping surface on the back side. And the metal spring 58 which is a single spring member which comprises the 1st and 2nd spring means is latched with respect to these engagement grooves 56a and 56b.

  As shown in FIGS. 7 to 10, the metal spring 58 is a thin metal plate spring and has a groove-shaped cross section including a bottom portion 60 and both side walls 62, 62. A locking portion protruding inward of the groove is integrally formed at each of the tip portions. The metal spring 58 is located behind the opening / closing shaft 49 of the pair of opening / closing members 48a, 48b, and is arranged in a state of opening toward the opening / closing members 48a, 48b and extending vertically. The engaging portions of the walls 62 and 62 are engaged with the engaging grooves 56a and 56b of the pair of opening and closing members 48a and 48b.

  As a result, the urging force of the metal spring 58 is always exerted in the direction of pressing the opening and closing members 48a and 48b toward each other toward the back of the pair of opening and closing members 48a and 48b. Further, as shown in FIGS. 7 and 9, the engaging grooves 56a and 56b of the pair of opening and closing members 48a and 48b serving as the action point of the urging force are formed on the opening and closing shafts 49 of the pair of opening and closing members 48a and 48b. On the other hand, it is set so that it is positioned on the side of the support column 12 (right side in FIG. 7) in the closed state, and is positioned on the side opposite to the support column 12 (left side in FIG. 9) in the open state.

  Therefore, in the closed state of the pair of opening / closing members 48a, 48b shown in FIG. 7, the urging force of the metal spring 58 is exerted on the pair of opening / closing members 48a, 48b in the closing direction. Thereby, the closed state of the chuck member 46 is elastically held. In the open state of the pair of opening / closing members 48a and 48b shown in FIG. 9, the urging force of the metal spring 58 is exerted on the pair of opening / closing members 48a and 48b in the opening operation direction. Thereby, the open state of the chuck member 46 is elastically held. The urging force of these metal springs 58 is selectively exerted on the pair of opening / closing members 48a and 48b as the holding force to the closed state and the holding force to the open state. As is clear from this, in the present embodiment, the first spring means for holding the chuck member 46 in the closed state and the second spring means for holding the chuck member 46 in the open state are both metal springs. 58.

  Further, the pair of opening and closing members 48 a and 48 b assembled with the metal spring 58 are accommodated in the accommodation space 32 of the housing 30 with the gripping holes 50 extending in the vertical direction. Further, the housing 30 is formed with an intermediate receiving piece 64 projecting into the accommodation space 32 at an intermediate portion in the vertical direction, and a pair of opening / closing members 48a, 48b between the intermediate receiving piece 64 and the upper wall portion 38. Is assembled by being positioned in the axial direction.

  Further, a flat plate-shaped support plate 66 is fixed in the stored state at the back of the storage space 32, and the bottom 60 of the metal spring 58 is fixed to the support plate 66 with a fixing screw 68. As a result, the pair of opening / closing members 48 a and 48 b are held by the housing 30 in the accommodation space 32 so as to be opened and closed via the metal spring 58.

  A service hole 70 is formed in each of the pair of opening and closing members 48a and 48b so as to penetrate the front and rear peripheral wall portions in order to facilitate the mounting operation of the fixing screw 68. The pair of opening and closing members 48 a and 48 b are aligned so that the gripping hole 50 extends in the vertical direction on the same central axis as the insertion notch 40 of the upper wall portion 38 of the housing 30 in the closed state.

  Further, the accommodation space 32 is provided with a cam piece 72 as a pressing member for opening and closing the opening and closing members 48a and 48b, which is located behind the opening and closing shaft 49 of the pair of opening and closing members 48a and 48b. ing. The cam piece 72 is disposed through the metal spring 58 and the support plate 66, and is actuated by a drive rod 74 disposed at the back of the support plate 66.

  The drive rod 74 extends in the vertical direction in the housing 30 and is disposed so as to be displaceable in the vertical direction in the housing 30. The rear end of the cam piece 72 is connected to the drive rod 74 by a connecting pin 76 so as to be rotatable. Further, the cam piece 72 is inserted and disposed in the through hole 77 of the support plate 66 fixed to the housing 30. As a result, when the rear end of the cam piece 72 moves in the vertical direction as the drive rod 74 is displaced in the vertical direction, the intermediate portion of the cam piece 72 is supported as shown in FIGS. 13 and 14. The cam piece 72 is oscillated and displaced by coming into contact with the upper and lower edge portions of the through hole 77 of the plate 66.

  That is, in the state where the drive rod 74 is positioned upward, as shown by the solid line in FIG. 14, the cam piece 72 has its rear end portion positioned upward and the front end portion depending downward. Held in an inclined state. When the drive rod 74 is displaced downward from there, as shown by the phantom line in FIG. 14, the cam piece 72 has a lower end of the through hole 77 as the rear end thereof is displaced downward. The front end portion is lifted upward by the abutting action on the edge portion, and shifts to a substantially horizontal state. In short, when an external force that causes the drive rod 74 to be displaced downward is exerted, an external force that causes the interlocking cam piece 72 to shift to a substantially horizontal state is also exerted. As a result, the front end portion of the cam piece 72 protrudes largely forward from the support plate 66, and is pressed against the rear surfaces of the pair of opening / closing members 48a and 48b.

  As a result, the pair of opening / closing members 48a and 48b are positioned by being locked by the metal springs 58 on both sides in the back left and right direction (up and down direction in FIGS. 7 and 9) in the closed state shown in FIGS. In this state, the opening / closing shafts 49 of the pair of opening / closing members 48a, 48b are pushed forward by the cam piece 72 from the engagement grooves 56a, 56b of the metal spring 58 (the column 12 side, rightward in FIG. 9). As a result, the state is shifted to the open state as shown in FIGS.

  In order to shift the pair of open / close members 48a and 48b opened to the closed state, the drive rod 74 is moved upward to tilt the cam piece 72, and then the pair of open / close members 48a and 48b is moved. On the other hand, an external force may be applied in the closing direction. Actually, the support 12 is inserted into the pair of open / close members 48a and 48b that are in the open state from the side and pushed, and the bottom of the pair of open / close members 48a and 48b is pressed by the support 12 to the back. An external force that operates in the closing direction is applied.

  Further, the urging force of the metal spring 58 has an equilibrium position where the engagement grooves 56a and 56b and the opening and closing shaft 49 as the action point of the urging force are aligned in a straight line in the cross section as shown in FIGS. At the boundary, the pair of opening / closing members 48a and 48b act alternately in the opening operation direction and the closing operation direction. In short, the chuck member 46 is selectively held in the open state and the closed state by the first spring means that holds the chuck member 46 in the closed state and the second spring means that holds the chuck member 46 in the open state. . Therefore, the opening and closing operations of the pair of opening and closing members 48a and 48b can be easily and reliably realized with an appropriate moderation feeling, and can be stably held in the open and closed states.

  Furthermore, the lower end portion of the drive rod 74 penetrates the hub portion 24 from the housing 30 and projects downward, and the external operation member 78 is locked to the lower end. The external operation member 78 is swingably attached to the hub portion 24 by a support shaft 80 extending in the horizontal direction, and is always always provided by a compression spring 82 interposed between the external operation member 78 and the hub portion 24. It is biased to one side in the swing direction.

  The lower end of the drive rod 74 is locked to a locking shaft 84 provided at the swinging portion of the external operation member 78, and the external operation member 78 is held upward by the urging force of the compression spring 82. In this state, the external operation member 78 is positioned and held upward. In such a state, the external operation member 78 is moved around the support shaft 80 against the urging force of the compression spring 82 by depressing the tip operation portion 86 of the external operation member 78 downward by stepping or the like. It can be swung. Accordingly, the drive rod 74 locked to the external operation member 78 is displaced downward, and as a result, the pair of opening / closing members 48a and 48b are operated in the opening direction. As described above, by providing the external operation member 78 that operates the pair of opening and closing members 48a and 48b in the opening direction, the opening operation means including the drive rod 74 and the cam piece 72 is configured.

  The external operation member 78 is automatically returned by being urged to one side in the swinging direction by the urging force of the compression spring 82 after a pressing operation by stepping or the like, but is driven by a drive rod 74. The pair of opening / closing members 48 a and 48 b opened by the piece 72 can be held in the open state based on the urging force of the metal spring 58.

  Therefore, in the drip stand 10 having the above-described structure, the support column 12 can be attached to the base 14 from the side in the horizontal direction and can be fixedly supported. That is, the cover 36 of the housing 30 of the base 14 is opened, and the opening of the pair of opening / closing members 48a and 48b held in the open state is opened through the side window 34, and the lower part of the support 12 Can be taken in and out of the pair of opening / closing members 48a and 48b through the side window 34 from the side in the horizontal direction. Thereafter, the support column 12 is pushed in and pressed against the back of the pair of opening / closing members 48a, 48b, thereby closing the pair of opening / closing members 48a, 48b and holding the lower portion of the support column 12 with the pair of opening / closing members 48a, 48b. Can do.

  Further, when the support column 12 is inserted into the pair of opening and closing members 48a and 48b, by aligning the annular protrusion 20 of the support column 12 with respect to the support piece 42 of the housing 30 in the axial direction, An axial load of the support column 12 can be received by the housing 30. In short, in the present embodiment, the support column 12 is positioned and supported in the direction perpendicular to the axis by the chuck member 46 including the pair of opening / closing members 48a and 48b, and is supported by the annular protrusion 20 in the axial direction while the support column 12 is supported by the base 14. Is supported by positioning.

  Further, when removing the support column 12 from the base 14, in other words, the pair of opening / closing members 48 a and 48 b, first, with the lid 36 of the housing 30 opened, stepping on the distal end operation portion 86 of the external operation member 78, etc. Press down to move down. By this operation, the pair of opening / closing members 48a and 48b are opened, and the support column 12 can be removed in the horizontal direction through the side window portion 34.

  Next, in FIG. 15, a frame 92 that is provided separately from the base 14 and is fixedly attached to a patient support device (a bed in the present embodiment) 88 via an attachment unit 90, The structure of the fixed support part 94 which is provided and supports the lower part of the column 12 is shown. FIG. 16 shows a state in which the support column 12 is supported by the fixed support portion 94.

  The frame 92 has a plate shape, and an attachment portion 90 attached to a patient support device 88 such as a bed is provided on one surface of the frame 92. In this embodiment, the attachment part 90 is fixed so as to sandwich the patient support device (bed) 88 up and down. That is, the attachment part 90 includes an upper mounting piece 91a and a lower mounting piece 91b. The upper mounting piece 91 a is fixed to the frame 92, and the lower mounting piece 91 b is movable up and down with respect to the frame 92. Thus, the frame 92 is fixed to the patient support device 88 with the structural members of the patient support device (bed) 88 sandwiched between the upper and lower mounting pieces 91a and 91b.

  In addition, a fixed support portion 94 that fixes and supports the lower portion of the support column 12 is provided on the surface of the frame 92 opposite to the surface having the attachment portion 90. The fixed support portion 94 includes a plurality of mounting portions 96. It is comprised from the piece (2 pieces in this embodiment) the holding part 98. FIG. The column 12 is fixed and supported in cooperation with the mounting portion 96 and the plurality of gripping portions 98.

  The mounting portion 96 is provided at the lower end of the frame 92 and positions and supports the lower portion of the support column 12 in the axial direction. That is, the mounting portion 96 protrudes on the surface of the frame 92, and supports the own weight of the column 12 by mounting the lower end surface of the column 12, thereby positioning and supporting the column 12 in the axial direction. . In addition, the support | pillar 12 mounted in the mounting part 96 can be taken out in the horizontal direction because the lower end surface of the support | pillar 12 is moved so that it may slide on the mounting part 96. FIG. Further, the upper surface of the projecting tip portion of the mounting portion 96 is an inclined surface, and the height decreases as going to the tip side. Thus, when the support column 12 is inserted in the horizontal direction, the support column is guided to the support position while avoiding hitting the mounting portion 96.

  Further, the grips 98 provided above the placement part 96 are provided so as to be separated from each other in the height direction of the frame 92, and position and support the lower part of the support column 12 in the direction perpendicular to the axis. Yes. That is, the grip portion 98 has a block shape that is fixedly provided on the surface of the frame 92, and has a U-shaped portion extending in the vertical direction at the center of the grip portion 98. A fitting groove 99 is formed. The inner peripheral surface of the fitting groove 99 corresponds to the outer peripheral surface shape of the support column 12, and the depth dimension of the fitting groove 99 is also set to be the same as the outer diameter size of the support column 12. Thereby, the support | pillar 12 is inserted by the back from an opening part with respect to the fitting groove | channel 99, and is accommodated.

  A rod-shaped rod 100 is attached to the opening side end surface of the fitting groove 99 in the grip portion 98 so as to be rotatable around the support shaft 102 on one side in the width direction of the fitting groove 99. Furthermore, the hook 100 is engaged with the opening end face of the fitting groove 99 on the other side in the width direction of the fitting groove 99 so as to be hooked on the opening of the fitting groove 99. A locking pin 104 is provided to fix the.

  And after inserting the support | pillar 12 horizontally with respect to the opening part of the fitting groove | channel 99, the hook 100 is rotated around the spindle 102, and it is made to latch with the latching pin 104, and a fitting groove | channel is carried out. The support 12 is positioned and supported by the grip portion 98 in the direction perpendicular to the axis by locking the hook 100 over the 99 opening.

  As described above, the mounting portion 96 and the grip portion 98 that fixedly support the lower portion of the support column 12 with respect to the patient support apparatus (bed) 88 are fixed to the lower portion of the support column 12 in the base 14 of the drip stand 10 described above. The support piece 42 and the chuck member 46 to be supported by each other are set at different height positions in the axial direction of the support column 12 and are provided at positions separated from each other.

  In the present embodiment, the lower grip portion 98 is provided at a position corresponding to the base member 14 between the chuck member 46 and the support piece 42, and the upper grip portion 98 is the upper wall of the housing 30. It is provided at a position higher than the portion 38. On the other hand, the placement portion 96 is provided at a height position corresponding to the lower space 44 formed below the support piece 42 in the accommodation space 32 of the base 14.

  As a result, the drip stand 10 is opposed to the frame 92 fixed to the patient support device 88, and the placing portion 96 and the grip portion 98 in the frame 92 and the support piece 42 and the chuck member 46 in the base 14 are moved. By moving the drip stand 10 closer to the frame 92 while facing each other, the mounting portion 96 and the grip portion 98 of the frame 92 avoid the support piece 42 and the chuck member 46 of the base 14 up and down. The base 14 can be inserted into the housing 30 (the accommodation space 32) or above. As a result, as shown in FIG. 17, the column 12 can be transferred and transferred between the drip stand 10 and the patient support device 88. In particular, for such delivery, as shown in FIG. 18, the support column 42 and the chuck member 46 on the drip stand 10 side, and the mounting portion 96 and the grip portion 98 on the patient support device 88 side are both provided with support columns. 12 is fixedly supported at different positions in the axial direction at the same time, so that accidents such as falling or coming off of the support column 12 can be prevented.

  Incidentally, FIGS. 17A to 17C show a process of transferring the column 12 from the drip stand 10 to the patient support device 88 and transferring it. First, as shown in FIG. 17A, the drip stand 10 on which the supporting column 12 to be transferred is fixedly moved is brought close to the patient support device 88 to which the frame 92 is attached.

  Next, as shown in FIG. 17 (b), after opening the lid 36 of the housing 30 in the drip stand 10, the side window 34 of the housing 30 faces the surface of the frame 92, and the frame 92 The mounting portion 96 and the grip portion 98 provided on the inside of the housing 30 are inserted in the horizontal direction with respect to the inside or the top of the housing 30. After that, as shown in FIG. 18, the column 12 is positioned and supported by the mounting portion 96 and the grip portion 98 on the frame 92 while being positioned and supported by the support piece 42 and the chuck member 46 on the drip stand 10 side. Let me.

  It should be noted that at least one of the plurality of gripping portions 98 in the frame 92 is configured to prevent the column 12 from being pulled out in the horizontal direction by closing the rod 100. In this state, the base 14 of the drip stand 10 is connected and fixed to the patient support device 88 to which the frame 92 is fixed via the support column 12.

  Subsequently, as shown in FIG. 17C, in the drip stand 10, the distal end operation portion 86 of the external operation member 78 is depressed downward by stepping or the like, and a pair of opening / closing members 48 a and 48 b. Is opened, and the positioning and fixing to the support column 12 in the base 14 is released. Thereafter, the base 14 is pulled out in the horizontal direction so as to be away from the patient support device 88. As a result, the column 12 is detached from the base 14 and is fixedly supported by the frame 92 with respect to the patient support device 88. In addition, when the grip part 98 to which the scissors 100 are not stretched remains, the scissors 100 are closed in all the grip parts 98. Thereby, the operation | work which transfers the support | pillar 12 from the base 14 of the drip stand 10 to the patient support apparatus 88 is completed.

  Contrary to the above, the process of transferring the support column 12 from the patient support device 88 to the base 14 is realized by performing the above operations in the reverse order. Briefly, first, as shown in FIG. 17 (c), the drip stand 10 from which the support 12 has been removed with respect to the frame 92 of the patient support device 88 that fixedly supports the support 12. The base 14 is positioned opposite. Further, if necessary, the heel 100 is released at some of the plurality of gripping portions 98 on the frame 92, while the lid body 36 of the base 14 is opened, and the base 14 is moved closer to the frame 92. Then, as shown in FIG. 17 (b), the column 12 is pushed into the accommodation space 32 of the base 14 while being fixedly supported by the mounting portion 96 and the grip portion 98 on the frame 92. As shown in FIG. 18, by pressing the column 12 against the chuck member 46, the pair of opening / closing members 48 a and 48 b are closed and gripped in a state of being supported by the support piece 42 in the axial direction. In this way, from the state in which the support column 12 is fixedly supported simultaneously on both the frame 92 side and the base 14 side, all the hooks 100 of the grip portion 98 on the frame 92 side are released to the frame 92 side. After the fixing force of the support 12 is released, the support 14 can be detached from the patient support device 88 and transferred to the support 14 only by moving the base 14 away from the patient support device 88. it can.

  In the drip stand 10 of the present embodiment having the above-described structure, the column 12 is attached to the base 14 without requiring time and labor such as screwing or removing the fixing screw. It can be easily and quickly attached and detached. Moreover, the column 12 can be attached to and detached from the base 14 by moving the column 12 in the horizontal direction perpendicular to the central axis of the column 12 supported in the vertical direction. There is no need to remove or insert the base 14 upward, and the work can be performed safely. Furthermore, from the support state of the support column 12 by both the chuck member 46 of the base 14 and the fixed support portion 94 of the frame 92, the chuck member 46 of the base 14 and the fixed support portion 94 of the frame 92 depend on one of them. Since the support 12 can be transferred between the base 14 and the frame 92 simply by releasing the support, the support 12 can be easily, safely, stably, and quickly moved.

  In particular, in the present embodiment, the operation of removing the support 12 held by the chuck member 46 also releases the holding state of the support 12 by the chuck member 46 only by stepping on the external operation member 78. Further, when the support member 12 is gripped by the chuck member 46, the support member can be held by the chuck member 46 only by pressing the support member 12 to the back of the chuck member 46. Therefore, the operation of fixing and releasing the column 12 with respect to the base 14 can be performed more easily.

  Further, in the present embodiment, the first and second spring means that exert an urging force in the opening direction and the closing direction on the pair of opening / closing members 48a and 48b constituting the chuck member 46 have a groove-shaped specific structure. Since the single spring member (metal spring 58) is formed, the number of parts can be reduced and the structure can be simplified.

  As mentioned above, although embodiment of this invention was described, this invention is not limitedly interpreted by the specific description. For example, the support piece 42 that supports the support column 12 in the axial direction on the base 14 and the mounting portion 96 that supports the support column 12 in the axial direction on the frame 92 are not necessarily required. It is only necessary that the positioning force in the axial direction with respect to the support column 12 is obtained at the base 14 or the frame 92. For example, if the support force in the axial direction of the support column 12 can be obtained by the chuck member 46 or the grip portion 98, The mounting part 96 is not necessary. In short, as long as the base 14 and the frame 92 exert a positioning force in the direction perpendicular to the axis and the axial direction with respect to the support column 12, the specific support structure is not limited. The support structure can also be put into practical use by inserting the attached insertion pin through the column 12 or the like.

  In this embodiment, the inpatient bed is used as the patient support device 88. However, the bed is not limited to this, and a wheelchair, a treatment bed, or the like may be used. The patient support device (particularly the bed) 88 may be of a type that can move up and down. Many patient beds move up and down about 30 to 40 cm. At this time, for example, a structure in which the position of the frame 92 is moved up and down by a motor or the like so as to match the height of the base 14 can be employed. Alternatively, when the bed is positioned at a predetermined height and the holding height of the bed column 12 and the holding height of the column 12 of the base 14 are set to match, the delivery of the column 12 is obstructed. Can be done without. Specifically, for example, the bed is moved to the lowermost end, and the holding height of the bed column 12 is made equal to the holding height of the column 12 of the base 14. Thereby, the delivery of the support column 12 is performed after the bed is moved to the lowermost end, and the delivery of the support column 12 can be performed stably even in a bed that can move up and down.

  In this embodiment, the patient support device 88 is sandwiched between the upper and lower sides of the attachment unit 90 and the patient support device 88 and the frame 92 are fixed. However, the present invention is not limited to this. May be fixed by bonding, welding, bolts, rivets or the like. It is also possible to fix the frame 92 to the patient support device 88 using a fastening band or the like wound around the structural material of the patient support device 88. Furthermore, the frame 92 may be formed integrally with the structural member of the patient support device 88 without using the attachment unit 90, or the structural member of the patient support device 88 may be used as the frame 92, for example.

  Furthermore, FIG. 19 shows a base 110 as a second embodiment constituting the drip stand of the present invention. In addition, since the base 110 of this embodiment makes the basic structure the same as 1st embodiment, about the member made into the same structure as 1st embodiment, the same code | symbol is shown in a figure Detailed description will be omitted.

  That is, the base 110 of the present embodiment is different from the base 14 of the first embodiment in the following first to third points. The first difference is that a safety mechanism for preventing the opening operation of the pair of opening / closing members 48a and 48b constituting the chuck member 46 is provided. The second difference is that the bottom surface of the accommodation space 32 formed in the housing 30 is formed as a pressing action surface 112 that spreads smoothly toward the front of the side window portion 34. The third difference relates to the support column 12 gripped by the base 14, but the end cap 22 at the lower end of the support column 12 has a positioning flat surface extending in the chord direction in the circumferential direction on the outer periphery surface or A notch 114 is formed, and an engagement hole 116 opened on the lower surface is formed.

  As shown in FIGS. 20 to 23, the above-described safety mechanism as the first difference is that a pair of opening and closing members in which the stopper pieces 118, 118 fixed to the drive rod 74 constitute the chuck member 46. This is realized by a mechanism for preventing the displacement of 48a and 48b in the opening direction. That is, the stopper pieces 118, 118 are provided so as to protrude from both sides of the drive rod 74 in the width direction toward both sides of the pair of opening / closing members 48a, 48b. In particular, in the present embodiment, a total of two pairs of stopper pieces 118, 118 are formed at positions corresponding to the intermediate portion and the lower end portion in the length direction of the chuck member 46, respectively. On the other hand, each of the pair of opening / closing members 48a and 48b is formed with an opening window 120 larger than the stopper piece 118 at an intermediate portion in the length direction.

  20 and 21 show a state in which the pair of opening / closing members 48a and 48b are closed and held by the drive rod 74 being positioned at the upper end without the foot pedal type external operation member 78 being operated. Is shown in In the closed holding state, the pair of stopper pieces 118, 118 are positioned so as to disengage the opening windows 120, 120 upward on both sides of the pair of opening / closing members 48a, 48b, and the other pair of stopper pieces 118, 118 is positioned on both sides of the pair of opening and closing members 48a and 48b so as to cover the lower end portion.

  Therefore, in a state where the external operation member 78 is not stepped on in this way, the displacement of the pair of opening / closing members 48a, 48b in the opening direction is prevented by the contact with the two pairs of stopper pieces 118, 118. It is like that.

  On the other hand, when the foot pedal type external operation member 78 is stepped on and the drive rod 74 is moved downward to be positioned at the lower displacement end, the two pairs of stopper pieces 118 and 118 are also moved downward together with the drive rod 74. Move to. As a result, as shown in FIGS. 22 and 23, the pair of stopper pieces 118 and 118 are positioned in the opening windows 120 and 120 on both sides of the pair of opening and closing members 48 a and 48 b, and the other pair of stopper pieces 118 and 118. The stopper pieces 118, 118 are positioned so that the pair of opening / closing members 48a, 48b are removed downward.

  Therefore, when the external operation member 78 is stepped on in this way, the opening operation prevention of the pair of opening / closing members 48a, 48b by the two pairs of stopper pieces 118, 118 is released. As a result, the opening operation of the pair of opening / closing members 48a, 48b by the pressing operation of the cam pieces 72, 72 driven in conjunction with the drive rod 74 is allowed, and the opening operation of the chuck member 46 is realized.

  By providing such a safety mechanism with the two pairs of stopper pieces 118, 118, the base 110 of the present embodiment allows the external operation member 78 to be attached even if the cover 36 of the housing 30 is left open. Unless the stepping operation is performed, the chuck member 46 is prevented from being unexpectedly opened due to an external force applied to the column 12 or the like.

  The pressing action surface 112, which is the second difference, is formed with a flat surface in which the bottom surface of the housing space 32 of the housing 30 is inclined substantially horizontally or slightly downward toward the front of the opening of the side window 34. ing. The pressing action surface 112 is used when the column 12 is transferred between the base 110 and a frame 122 (see FIGS. 24 and 30 to 32) fixed to a bed or the like as a patient support device described later. The function of releasing the locked state of the support column 12 with respect to is exhibited. Such an unlocking function of the pressing surface 112 will be clarified in the description of FIGS.

  The above-mentioned end cap 22 which is the third difference is fixed to the lower end of the support column 12, and as shown in FIG. 24, in the annular protrusion 20 protruding like a bowl on the outer peripheral surface, A notch 114 is formed at an appropriate site on the outer peripheral surface. Although not clearly shown in the drawing, the notch 114 is formed in the lid body 36 of the housing 30 of the base 110 under the holding state by the base 110 of the support column 12 as shown in FIG. By being closed, it is engaged with a protrusion or the like protruding from the inner surface of the lid 36.

  As a result, the support column 12 held in the housing 30 with the lid 36 closed is positioned by being prevented from rotating in the circumferential direction by the engaging action of the inner surface projection of the lid 36 with the notch 114 of the end cap 22. ing. Therefore, the support column 12 supported by the base 110 can be held in a stable support state by preventing rotation around the central axis on the base 110 even if an external force or the like is applied, for example.

  Further, the engagement hole 116 as an engagement recess formed by opening in the center of the lower surface of the end cap 22 is fixed to a bed or the like as a patient support device, as shown in FIG. It is used for fixed support when the column 12 is supported on the frame 122. This fixed support mechanism will be described below.

  That is, the frame 122 fixed to the bed or the like is provided with a grip portion 124 at the upper end portion and a locking portion 126 at the lower end portion in order to support the lower portion of the column 12 in a fixed manner. In addition, a fixed support portion 128 that includes the grip portion 124 and the locking portion 126 and supports the lower end of the column 12 on the frame 122 is configured.

  As shown in FIGS. 25 to 28, the locking portion 126 has a mounting table 130 having a hollow box shape that opens downward, and the mounting table 130 protrudes from the frame 122 and is fixed. Has been. On the upper surface of the mounting table 130, a flat mounting surface 134 is formed that is surrounded by a surrounding wall 132 on a half circumference. In addition, a slope-shaped guide surface 136 that is gradually inclined downward from the mounting surface 134 is provided on the protruding tip side of the mounting table 130.

  Further, a through-hole 138 is formed in the bottom wall of the mounting table 130 so as to be positioned at the center portion of the mounting surface 134. The engagement member 140 is assembled to the through-hole 138 in a state where the engagement member 140 is fitted in a vertically movable manner. A flange-like protrusion is formed at the lower end of the engaging member 140, and when the engaging member 140 is displaced upward, the upper end portion of the engaging member 140 is placed on the mounting surface 134 from the through hole 138. Is protruded at a predetermined height, but the engaging member 140 does not completely come out of the through hole 138.

  Further, below the engagement member 140, an action lever 142 as a release operation member is assembled in a state of being accommodated in the hollow interior of the mounting table 130. The action lever 142 is supported so as to be rotatable around a support shaft 144 inserted through an intermediate portion in the length direction, and is always unidirectionally provided by a metal spring 146 attached to the support shaft 144. It is energized. That is, in FIG. 27, it is urged to the left around the spindle 144, and is elastically positioned at the counterclockwise moving end shown in FIG.

  The action lever 142 positioned at the counterclockwise moving end is in contact with the lower surface of the engaging member 140 at one end, and holds the engaging member 140 protruding upward from the through hole 138. It is supposed to be. Further, the other end portion of the action lever 142 is protruded downward from the lower end surface of the mounting table 130 at a predetermined height. Then, an external force is applied to the other end of the action lever 142 protruding downward, and the action lever 142 is rotated clockwise in FIG. 27 against the urging force of the metal spring 146. As shown in FIG. 29, the push-up force to the engaging member 140 is released, the engaging member 140 is lowered by its own weight, and the engaging member 140 is placed in the through hole 138. It has become.

  Such a locking part 126 positions and supports the column 12 in the axial direction when the lower end of the column 12 is mounted on the mounting surface 134 of the mounting table 130. Further, the support column 12 mounted on the mounting surface 134 is engaged with the engagement hole 116 as shown in FIG. 24 in addition to the displacement in the direction perpendicular to the axis being prevented by the surrounding wall 132. Positioning in the direction perpendicular to the axis is also realized by the engaging action of the joint member 140.

  In particular, in this embodiment, the lowering operation of the engaging member 140 by rotating the action lever 142 against the urging force of the metal spring 146, as shown in FIGS. This is automatically performed by an approach operation with respect to the frame 122. That is, when the support column 12 supported by the fixed support portion 128 of the frame 122 is transferred to the base 110 side, as in the first embodiment, the lid of the housing 30 of the base 110 is opened and the chuck member is opened. In the state where 46 is opened, the base 110 is moved closer to the frame 122. At this time, as shown in FIG. 30, the pressing action surface 112 extending forward at the lower portion of the housing 30 of the base 110 enters under the mounting table 130 of the frame 122 and serves as a member on the base side. The mounting table 130 is moved so as to ride on the pressing surface 112 of the hub portion 24. As a result, as shown in FIG. 31, the action lever 142 protruding downward from the mounting table 130 rides on the pressing action surface 112 of the housing 30, and the action lever 142 is rotated clockwise in the drawing. Accordingly, the engaging member 140 moves downward. In this way, the restriction in the direction perpendicular to the axis with respect to the support column 12 by the locking portion 126 is released, and as shown in FIG. 32, the delivery of moving the support column 12 toward the base 110 is allowed. It is.

  On the other hand, as shown in FIGS. 33 to 42, the grip portion 124 that constitutes the fixed support portion 128 that supports the support column 12 with respect to the frame 122 in cooperation with the locking portion 126 can be opened and closed. A frame side chuck member 156 including a pair of openable and closable frame side opening and closing members 154 and 154 is assembled in a frame side housing 152 having a frame side lid 150. The column 12 is delivered to the frame side chuck member 156 through the side window portion 155 of the frame side housing 152 opened by the opening operation of the frame side lid 150.

  That is, the grasping portion 124 has the same basic structure as the structure for grasping the support column 12 in the base 14 in the first embodiment, and it is easy to understand if it is regarded as being downsized vertically. . The grip portion 124 can transfer the column 12 from the side with the pair of frame side opening and closing members 154 and 154 opened, and the pair of frame side opening and closing members 154 and 154 are closed. The outer peripheral surface of the support column 12 is gripped and positioned and supported in the direction perpendicular to the axis.

  The gripping portion 124 has the same basic structure as that of the base 14, but is different in details such as an opening / closing operation mechanism and a lock mechanism, and therefore a brief description will be added below.

  First, a frame-side metal spring 158 is fixed to the frame-side housing 152 fixed to the frame 122 as a frame-side spring member made up of a vertically extending groove-shaped leaf spring. The frame-side metal spring 158 opens the frame-side metal spring 158. The pair of frame side opening / closing members 154 and 154 are assembled so as to be selectively biased and held between the state and the closed state. The pair of frame side opening / closing members 154 and 154 have the same structure as the pair of opening / closing members 48 and 48 of the base 14 in the first embodiment, and are engaged with the inner surface of the frame side lid 150 to open. The frame-side fitting protrusions 151, 151, etc. that prevent the same are provided in the same manner as the base 14 in the first embodiment, and the support column 12 is reliably secured by the grip portion 124 when the frame-side lid 150 is closed. A second safety lock mechanism is provided for continuing to hold.

  In addition, a frame-side pressing member 160 for opening the pair of frame-side opening / closing members 154, 154 from the closed state is disposed on the rear upper part of the frame-side opening / closing members 154, 154. The frame-side pressing member 160 is fixed to the approximate center of a shaft member 162 extending in the horizontal direction, and has a block shape that is rotationally displaced integrally with the shaft member 162. Further, left and right operation pieces 164 and 164 are fixedly attached to the shaft member 162 at both end portions. These left and right operation pieces 164 and 164 protrude upward from the frame-side housing 152, and by applying an external force with fingers or the like to the operation pieces 164 and 164, the frame-side pressing member is interposed via the shaft member 162. 160 can be rotated.

  That is, in the present embodiment, a frame-side external operation member that drives the frame-side pressing member 160 is configured including the left and right operation pieces 164 and 164 and the shaft member 162. Then, by operating the frame-side external operation member to drive the frame-side pressing member 160 from behind to the pair of frame-side opening / closing members 154, 154, the pair of frame-side opening / closing members 154, 154 are moved. It can be opened from the closed state.

  In particular, in the present embodiment, an opening operation for preventing an inadvertent opening operation of the pair of frame side opening / closing members 154 and 154 in the closed state using the frame side pressing member 160 and the left and right operation pieces 164 and 164. Regulatory means are configured. That is, when a large external force is applied to the column 12 held by the pair of frame-side opening / closing members 154, 154, the pair of frame-side opening / closing members 154, 154 are forcibly opened to open the column 12. It is prevented from coming off.

  Specifically, the outer upper end of the frame-side pressing member 160 protrudes toward the pair of frame-side opening / closing members 154 and 154 and is provided at the upper ends of the pair of frame-side opening / closing members 154 and 154. A key-shaped locking portion 168 that prevents the opening operation of the pair of frame side opening / closing members 154 and 154 by being locked to the recess 166 is formed. Further, the left and right operation pieces 164 and 164 are engaged with engagement convex portions 170 and 170 protruding outward from the respective side surfaces of the pair of frame side opening / closing members 154 and 154, so Hook-type locking portions 172 and 172 that prevent the opening and closing members 154 and 154 from opening are formed. The key-shaped locking portion 168 and the hook-shaped locking portions 172, 172 are frame-side pressing members 160 and urging springs (not explicitly shown in the drawing) attached to the shaft member 162. Since the left and right operation pieces 164 and 164 are always urged around the shaft member 162, the engagement pieces 166 and the engagement protrusions 170 and 170 are held in a locked state.

  However, the key-shaped locking portion 168 and the hook-shaped locking portions 172 and 172 are separated from the engagement recess 166 and the engagement protrusions 170 and 170 as the frame side opening / closing members 154 and 154 are opened. The engagement is released, and the opening operation of the pair of frame side opening / closing members 154 and 154 is allowed. Therefore, in the normal opening operation by the frame side external operation member, a special releasing operation is not required, and the frame side chuck member 156 can be quickly opened.

  On the other hand, when the frame-side opening / closing members 154 and 154 are opened by the frame-side external operation member in this way, the opening operation blocking function by the key-shaped locking portions 168 and the hook-shaped locking portions 172 and 172 is automatically released. Therefore, when an unexpected external force is exerted on the frame side opening / closing members 154, 154, it is inevitable that the pair of frame side opening / closing members 154, 154 are inadvertently opened. Therefore, in the present embodiment, a first safety lock mechanism for preventing malfunction of the frame side opening / closing members 154 and 154 is further provided.

  The first safety lock mechanism includes a lock block 176 that is incorporated in the frame-side housing 152 and prevents the frame-side opening / closing member 154 from opening. The lock block 176 is movable in a vertical direction along a guide shaft 178 projecting in the vertical direction in the frame side housing 152, and is a compression coil spring 180 externally attached to the guide shaft 178. Always biased upward.

  At the upper end position urged by the compression coil spring 180, the lock portion 182 formed on the upper portion of the lock block 176 is fitted into the locking portion 184 formed on the locking piece 164 and locked. Yes. Under the locked state of the locking part 182 and the locking part 184, the frame side pressing member 160 is prevented from rotating around the shaft member 162. Therefore, the frame side opening / closing member by the operation of the frame side opening / closing member 154 is prevented. The opening operation of 154, 154 is prevented.

  In order to release such a safety lock by the lock block 176, a lock release lever 186 is provided. The unlocking lever 186 is disposed so as to protrude upward from the frame side housing 152 in a state of being rotatable around the shaft member 162, and to be released downwardly into the frame side housing 152. 188. Then, when the lock release lever 186 is rotated from the locked state shown in FIG. 39 to the left in the drawing around the shaft member 162, the release protrusion 188 is formed on the upper end surface of the lock block 176. The lock block 176 is pressed downward against the urging force of the compression coil spring 180 by pressing the inclined surface.

  Thus, when the lock block 176 is pushed down, the engagement of the locking piece 164 in the locking portion 182 of the locking block 176 into the locking portion 184 is released. As a result, the first safety lock mechanism is released, and the frame side chuck member 156 can be opened by the frame side external operation member.

  The first safety lock mechanism for preventing unexpected operation of the frame-side external operation member is not limited to that of the present embodiment, and is, for example, protruded from the frame-side housing 152 to be the frame-side opening / closing member. It can also be realized by providing a blocking projection for automatically returning by a compression spring, for example, by providing a blocking projection for blocking the opening operation of the frame side opening / closing member 154 by contacting the frame 154.

  In addition, each structure in the above-described second embodiment is also an aspect in which various changes, modifications, and improvements are added based on the knowledge of those skilled in the art, as long as it does not depart from the spirit of the present invention, as in the first embodiment. In addition, each of such embodiments is included in the scope of the present invention.

10: drip stand, 12: support, 14: base, 16: support arm, 18: treatment liquid container, 20: annular protrusion, 22: end cap, 24: hub part, 26: leg part, 28: caster, 30: Housing, 31: Fixing bolt, 32: Storage space, 34: Side window part, 36: Cover, 38: Upper wall part, 40: Insertion notch, 42: Support piece (axial support part), 44: Lower space, 46: chuck member, 48a, 48b: open / close member, 49: open / close shaft, 50: gripping hole, 51: fitting protrusion, 52: fitting hole, 53a, 53b: engaging protrusion, 54: gap 56a, 56b: engaging groove, 58: metal spring, 60: bottom, 62: side wall, 64: intermediate receiving piece, 66: support plate, 68: fixing screw, 70: service hole, 72: cam piece (pressing member) ), 74: drive rod, 76: connecting pin, 77: Through-hole, 78: external operation member, 80: support shaft, 82: compression spring, 84: locking shaft, 86: tip operation section, 88: patient support device, 90: attachment section, 91a: upper mounting piece, 91b: Lower mounting piece, 92: frame, 94: fixed support portion, 96: mounting portion, 98: gripping portion, 99: fitting groove, 100: hook, 102: support shaft, 104: locking pin, 110: base 112: pressing surface, 114: notch, 116: engagement hole (engagement recess), 118: stopper piece, 120: opening window, 122: frame, 124: gripping part, 126: locking part, 128: fixed support portion, 130: mounting table, 132: surrounding wall, 134: mounting surface, 136: guide surface (slope), 138: through hole, 140: engagement member, 142: action lever (release operation member) 144: Support shaft 146: Metal spring 150 Frame side lid, 151: Frame side fitting protrusion, 152: Frame side housing, 154: Frame side opening / closing member, 156: Frame side chuck member, 158: Metal spring, 160: Frame side pressing member, 162: Shaft member, 164: Operation piece, 166: Engaging recess, 168: Locking locking part, 170: Engaging protrusion, 172: Hook locking part, 176: Lock block, 178: Guide shaft, 180: Compression coil spring, 182: Lock portion, 184: Locking portion, 186: Lock release lever, 188: Release protrusion

Claims (19)

And supports for treatment liquid container, and independently slidable base and patient support device provided separately from the patient support apparatus for supporting a patient, is configured comprise, strut A drip stand attached to the base in a detachable manner on the base ,
In the base, a chuck member is provided that can open and close an opening opening that opens in a horizontal direction, and the lower portion of the support column is taken in and out from the side when the opening of the chuck member is open. An infusion stand characterized by being capable of being supported and grasping and supporting the lower part of the support column in a closed state of the opening in the chuck member.   A first spring means for holding the chuck member in a closed state is provided, and an opening operation means for operating the chuck member in the opening direction against the holding force to the closed state by the first spring means is provided. The infusion stand according to claim 1.   Second spring means for holding the chuck member in an open state is provided, and the chuck member is selectively held in an open state and a closed state by the first spring means and the second spring means. The drip stand according to claim 2, which is adapted to be used.   The drip stand according to claim 3, wherein the first spring means and the second spring means are constituted by one spring member. As the chuck member, a pair of semicircular opening / closing members combined in an openable / closable manner are used,
As the spring member, a groove-shaped metal spring composed of a bottom portion and both side walls is used,
The metal spring is arranged behind the opening / closing shaft of the pair of opening / closing members,
The front end portions of both side walls of the metal spring are locked to one of the pair of opening and closing members, and
The locking position of the metal spring to the opening / closing member is closer to the column than the opening / closing shaft of the opening / closing member in the closed state of the opening / closing member, and the column from the opening / closing shaft of the opening / closing member in the opened state of the opening / closing member. On the opposite side,
The elastic force in the approaching direction of the both side walls of the metal spring is selectively exerted on the opening / closing member as a holding force to a closed state and a holding force to an open state. Infusion stand. While disposing a pressing member deeper than the opening and closing shaft of the pair of opening and closing members,
By pressing the pressing member from the back against the pair of opening / closing members in the closed state, the opening / closing shafts of the pair of opening / closing members are pushed out toward the support column side from the locking position of the metal spring. By providing an external operation member that operates the opening and closing member in the opening direction,
The drip stand according to claim 5, wherein the opening operation means is configured. The external operation member that operates the pressing member with an external input has a foot pedal structure,
A drive rod for transmitting an external input exerted on the external operation member to the pressing member;
A stopper piece that prevents the pair of opening / closing members from being displaced in the opening direction is formed on the drive rod, and the stopper rod is displaced relative to the pair of opening / closing members by being displaced by the external operation member. The drip stand according to claim 6, wherein the drip stand is allowed to deviate from the blocking position and allow the pair of opening / closing members to open.   The drip stand according to any one of claims 5 to 7, wherein each of the pair of opening and closing members has a longitudinal structure extending in the vertical direction with a semicircular cross-sectional shape. The base is provided with a housing in which an accommodation space for accommodating the chuck member is formed, and the accommodation space is provided with a side window portion that opens to the side, and the side window portion While the column can be inserted and removed from the side with respect to the chuck member opened through,
The housing is provided with a lid that covers the side window, and the chuck member is interposed between the lid and the chuck member while the side window is covered by the lid. The drip stand according to any one of claims 1 to 8, wherein a lock mechanism is provided for engaging and holding in a closed state.   The drip stand according to any one of claims 1 to 9, wherein an axial support portion that positions and supports a lower portion of the support column in the axial direction is provided on the base.   The drip stand according to any one of claims 1 to 10, wherein in the base, circumferential positioning means for positioning a lower portion of the support column in a circumferential direction around a central axis is provided. Wherein the base for the frame to be fixed to the patient support apparatus provided separately, provided with a fixed support for fixedly supporting the lower portion of the strut,
The fixed support portion of the frame is provided at a position deviated from the chuck member in the axial direction of the column in the support state of the column by the chuck member of the base, and is supported by the chuck member of the base. The support can be simultaneously supported by the fixed support portion of the frame,
The support by one of the chuck member of the base and the fixed support portion of the frame is released from the support state of the support column by both the chuck member of the base and the fixed support portion of the frame. The drip stand according to any one of claims 1 to 11, wherein the support column can be transferred between the base and the frame.   The fixed support portion in the frame includes a grip portion that positions and supports a lower portion of the support column in a direction perpendicular to the axis, and a mounting portion that positions and supports the lower portion of the support column in an axial direction. 12. The infusion stand according to 12. In the mounting portion, the lower end of the column is positioned in a direction perpendicular to the axis by being protruded toward the lower end of the column and held in an engaged state with the lower end of the column. And providing an engaging member
Providing a release operation member for displacing the engagement member downward from the protruding position to release the engagement to the lower end of the column; and
When the support is transferred between the base and the frame, when the base is brought close to the frame, the release operation member is pressed and operated by the member on the base side. The drip stand according to claim 13, wherein the engagement with the support column is released.   An engagement recess opening in the lower end surface of the support column is provided. When the engagement member is protruded, the engagement recess is inserted from below to engage with the concave and convex portions. The infusion stand according to claim 14. The gripping part constituting the fixed support part is
A pair of frame-side opening and closing members that constitute a frame-side chuck member that is openable and closable so that the lower part of the pillar can be inserted and removed from the side in the open state and that holds and supports the lower part of the pillar in the closed state;
A frame-side spring member that selectively holds the pair of frame-side opening and closing members in the opening operation and the closed position;
A frame-side pressing member that is disposed in the back of the pair of frame-side opening / closing members and is opened by pressing the pair of frame-side opening / closing members closed from the back;
An external frame side that opens the pair of frame side opening / closing members by exerting an external operating force on the frame side pressing member and driving the frame side pressing members against the pair of frame side opening / closing members from the back. The drip stand according to claim 14 or 15, comprising an operation member. Providing an opening operation restricting means for holding the pair of frame side opening and closing members in a closed state and preventing the pair of frame side opening and closing members from operating from a closed state to an open state;
As the frame-side pressing member presses the pair of frame-side opening / closing members by the frame-side external operation member, the state of blocking the opening operation of the pair of frame-side opening / closing members by the opening-operation restricting means is interlocked. The drip stand according to claim 16, wherein the drip stand is released.   The frame side external operation member is provided with a first safety lock mechanism for preventing displacement due to an external operation force, and the frame side external operation is performed on condition that the operation for releasing the first safety lock mechanism is performed. The drip stand according to claim 16 or 17, wherein the frame side pressing member is allowed to be pressed against the pair of frame side opening / closing members by a member. The frame is provided with a frame-side housing that houses the frame-side opening / closing member,
The frame-side housing is provided with a side window portion that opens to the side, and the support column can be inserted and removed from the side with respect to the frame-side opening / closing member that is opened through the side window portion. While being
In the frame side housing, a frame side lid that covers the side window is provided so as to be openable and closable,
Between the frame-side lid and the frame-side opening / closing member, a second side which holds the frame-side opening / closing member in a closed state while the side-window is covered by the frame-side lid. The drip stand according to any one of claims 16 to 18, wherein a safety lock mechanism is provided.