JP6331577B2 - Filter filter holder - Google Patents

Description

  The present invention relates to a filter filter holder for holding, for example, a microfiltration filter attached to a dialysis machine.

  The dialyzer may be connected to a filtration filter that filters raw water before being supplied to the dialyzer. The filtration filter is a cylindrical housing in which a filtering material is accommodated. The housing has an inflow distribution pipe portion for allowing liquid to flow into the housing, and an outflow distribution pipe for allowing liquid to flow out from the housing. Are provided at both ends in the longitudinal direction of the housing. Conventionally, this filter is often used by diverting the housing of the dialyzer. For example, a coupler for dialyzer as disclosed in Patent Document 1 is connected to the flow pipe part, and the filter is passed through the coupler. Is connected to a dialysis machine or the like.

  The coupler of Patent Document 1 includes a ball lock mechanism that connects the flow pipe portion of the filtration filter to the coupler. The ball lock mechanism includes a lock ball, a sleeve (lock cylinder) for performing a lock operation of the lock ball, and a coil spring that urges the sleeve toward the distal end side (lock position side) of the coupler. Yes.

  Patent Documents 2 and 3 disclose a holder that holds a filtration filter by connecting an inflow circulation pipe section and an outflow circulation pipe section.

  In Patent Document 2, an upper connection portion and a lower connection portion are provided on the upper and lower portions of the filtration filter, respectively, and an upper lock lever for locking the upper connection portion of the filtration filter is provided on the upper side of the holder. A lower lock lever that locks the lower coupling portion of the filtration filter is provided on the side.

  The holder of Patent Document 3 is also provided with lock levers on the upper side and the lower side, respectively.

JP-A-9-51945 (particularly paragraphs [0002] to [0005]) Japanese Patent Laid-Open No. 11-70164 Japanese Patent No. 3923845

  When connecting the flow pipe part to the coupler of Patent Document 1, first, the sleeve urged toward the distal end is moved backward to the proximal end side (the lock release position side) against the urging force of the coil spring, and the ball for locking After releasing the lock, insert the flow pipe part connected to the coupler from the tip of the coupler, then release the hand that has retracted the sleeve and advance the sleeve by the urging force of the coil spring, and the ball for locking A series of work of locking the is required. Therefore, there is a problem that the connection work of the distribution pipe part is complicated and time-consuming. In addition, since the only force for advancing the sleeve is the urging force of the coil spring, it is unclear whether or not the locking is ensured. If the flow pipe part is inserted only halfway through the coupler, the flow pipe part Cannot be securely locked. In this state, if the filter is used without noticing that the operator has not been locked, there is a risk of water leakage.

  In addition, in the holders of Patent Documents 2 and 3, when the filtration filter is held in the holder, the filtration filter must first be attached to the attachment position of the holder, and then the upper and lower lock levers must be operated and locked. . Therefore, both the operation of the filtration filter and the operation of the lever must be performed in order to hold the filtration filter in the holder, and there is a problem that the work is complicated and troublesome.

  This invention is made | formed in view of this point, The objective is to enable it to hold | maintain a filtration filter reliably and simply to a holder.

  In order to achieve the above object, according to the present invention, an engagement member that engages with a locking recess formed in a flow pipe portion of a filtration filter, and a lock member that fixes the engagement member to an engagement position. The locking member is moved from the unlocked position to the locked position by a force acting on the connecting part during the connection operation of the flow pipe part.

The first invention is
A filtration filter holder for holding a filtration filter comprising a cylindrical housing for containing a filtration material,
A holder body;
A plurality of connection portions to which a plurality of flow pipe portions through which liquid flows between the inside and the outside of the housing are respectively connected;
The plurality of connections are
An insertion cylinder into which the flow pipe part is inserted;
The locking member is housed in an engaging member housing hole penetrating the wall of the insertion tube, and protrudes radially inward from the inner peripheral surface of the insertion tube to the outer peripheral surface of the flow pipe portion. A radial direction of the insertion cylinder between an engagement position that engages with the recess and a non-engagement position that is disposed radially outside the insertion cylinder with respect to the engagement position and does not engage with the locking recess. An engaging member that moves to
The shaft of the insertion cylinder is between a lock position that fixes the engagement member at the engagement position and a lock release position that allows the engagement member to move from the engagement position to the non-engagement position. A locking member that moves in a direction;
A switching member that contacts the filtration filter and switches the lock member from the unlocked position to the locked position when the flow tube part is inserted into the insertion tube;
Each with
The plurality of switching members are switching cylinders extending from the holder main body side to the filtration filter side, and when the plurality of flow pipe portions are respectively inserted into the plurality of insertion cylinders, the filtration filter is switched to the plurality of switching cylinders. By the force acting on the member, the plurality of locking members are respectively switched from the unlocked position to the locked position, and the plurality of flow pipe portions are simultaneously connected to the plurality of connecting portions, respectively .
The switching cylinder is provided with a head portion that contacts the filtration filter so as to protrude toward the filtration filter,
The switching cylinder is configured such that when the head part comes into contact with the filtration filter at a portion of the end face of the switching cylinder on the filtration filter side that is separated from the head part in the circumferential direction of the switching cylinder, It characterized that you have had the abutment portion abutting on.

  According to this configuration, when the flow pipe portion is inserted into the insertion tube, the filtration filter contacts the switching member, and the switching member moves in the axial direction of the insertion tube. At this time, the lock member moves to the lock position by the force of the filtration filter acting on the switching member. At the same time, the engaging member protrudes from the inner peripheral surface of the insertion tube to the inner side in the radial direction of the insertion tube, and is fixed at an engagement position that engages with a locking recess formed on the outer peripheral surface of the flow pipe portion. Engages with the locking recess. Since these actions occur simultaneously at the plurality of connecting portions, the plurality of flow pipe portions are simultaneously connected to the plurality of connecting portions, respectively, and the filtration filter is reliably and easily held by the holder.

According to a second invention, in the first invention,
The connection portion includes an elastic member that allows relative movement in the axial direction of the insertion cylinder of the switching member with respect to the lock member by elastic deformation,
When the elastic member is inserted into the insertion tube of the flow pipe portion, the lock member is held in the unlock position until the locking recess is in an insertion position corresponding to the engagement member. Relative movement of the switching member with respect to the lock member is allowed.

  According to this configuration, since the switching member is allowed to move relative to the lock member by the elastic member, the lock member is held in the unlocked position when the flow pipe portion is inserted into the insertion tube. In this state, the switching member moves in the axial direction of the insertion tube by the force of the filtration filter acting on the switching member, and the elastic force is stored in the elastic member. Further, when the flow pipe portion is inserted into the back side of the insertion tube and the locking recess is in the insertion position corresponding to the engaging member, the engaging member can be engaged with the locking recess, and the engaging member is locked. When engaged with the recess, the lock member held at the unlocking position can be moved to the locking position. Therefore, when the elastic force stored in the elastic member is released, the lock member moves from the unlocked position to the locked position, and the engaging member engages with the locking recess and is fixed at the engaged position. . As a result, the flow pipe part is connected to the connection part, and the filtration filter is held by the holder.

According to a third invention, in the first or second invention,
A lock release member that presses the lock member at the lock position toward the lock release position is provided.

  According to this configuration, when the connection between the flow pipe portion and the connection portion is released, the lock release member first presses the lock member at the lock position and moves it to the lock release position. In this state, since the engagement member is allowed to move from the engagement position to the non-engagement position, the engagement member is moved to the disengagement position by moving the flow pipe portion in the direction of coming out of the insertion tube. The engagement member and the locking recess are disengaged. Therefore, the connection between the flow pipe part and the connection part is released, and the filtration filter is separated from the holder.

According to a fourth invention, in the third invention,
A connecting member that connects the plurality of unlocking members that press the plurality of locking members respectively provided in the plurality of connecting portions;
An operation unit for an operator to operate the connecting member;
It is characterized by providing.

According to this configuration, when the operator operates the connecting member with the operation unit, the plurality of unlocking members connected by the connecting member press the plurality of locking members at the locking position toward the unlocking position, respectively. It is possible to move from the locked position to the unlocked position .

According to the first invention, when the plurality of flow pipe portions are respectively inserted into the plurality of insertion cylinders, the plurality of lock members are respectively locked from the unlocked position to the locked position by the force that the filtration filter acts on the plurality of switching members. Therefore, the filter can be securely and simply held in the holder without performing complicated operations such as operating the coupler with both hands and operating the lock lever.
In addition, since the head portion and the contact portion that are separated in the circumferential direction of the switching cylinder come into contact with the outer peripheral surface of the filtration filter, the switching cylinder stably moves in the insertion direction of the flow pipe section, and the lock member is unlocked. The force to move from to the lock position can be transmitted.

  According to the second aspect of the invention, since the elastic member that allows the relative movement of the lock member with respect to the switching member is provided in the connection portion, the flow pipe portion can be removed even if there is an error in the dimensions of the flow pipe portion and the connection portion. Smooth connection to the connection.

  According to the third aspect of the invention, since the lock release member that presses the lock member at the lock position toward the lock release position is provided, the filtration filter can be easily separated from the holder.

According to the fourth aspect of the present invention, since the connecting member for connecting the plurality of unlocking members to each other is provided and the operator can operate the connecting member with the operation unit, the plurality of connection units can be simply operated by operating the operation unit. And the distribution pipe part can be disconnected, and the filtration filter can be separated from the holder .

FIG. 1 is a side view of a filtration filter. FIG. 2 is a longitudinal sectional view of the filtration filter. FIG. 3 is a front view of the holder according to the embodiment of the present invention. FIG. 4 is a side view of the holder according to the embodiment. 5 is a cross-sectional view taken along the line VV in FIG. FIG. 6 is an enlarged view of the inflow side connection portion of FIG. FIG. 7 is a side view showing a state before the filter is held by the holder. FIG. 8 is a view corresponding to FIG. 6 showing a state before the filter is held by the holder. FIG. 9 is a view corresponding to FIG. 8 showing a state in which the distal end of the inflow pipe portion is inserted into the inflow side connection portion. FIG. 10 is a view corresponding to FIG. 8 showing a state immediately before the locking ball is engaged with the inflow side annular groove. FIG. 11 is a view corresponding to FIG. 8 showing a state in which the filtration filter is held by the holder. FIG. 12 is a view corresponding to FIG. 5 showing a state in which the inflow side unlocking pin is pressed toward the filtration filter by the inflow side connecting plate. FIG. 13 is a view corresponding to FIG. 8 showing a state where the lock cylinder pressed by the inflow side lock release pin has moved to the lock release position. FIG. 14 is a view corresponding to FIG. 8 showing a state in which the inflow pipe portion is being removed from the insertion tube. FIG. 15 is a view corresponding to FIG. 8 illustrating a state in which the filtration filter is separated from the holder.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or its application.

  The holder 1 according to the embodiment of the present invention is for holding a filtration filter F as shown in FIGS. 1 and 2, for example. This filtration filter F is a well-known filter configured to be able to precisely filter raw water (liquid) such as tap water supplied from the outside during dialysis treatment, and an electrolyte or the like is added to pure water after filtration. The dialysate is supplied to a dialyzer (not shown). The filtration filter F includes a cylindrical housing F1 extending in the center line direction, and is used in a posture in which the longitudinal direction of the housing F1 is the vertical direction.

  In the following description, with reference to the state in which the longitudinal direction of the housing F1 is the vertical direction, “upper side” indicates the upper side in FIG. 1, “lower side” indicates the lower side in FIG. 1 indicates the left side in FIG. 1, and “rear side” indicates the right side in FIG.

  The upper end surface and the lower end surface of the housing F1 are covered with an upper lid member F2 and a lower lid member F3, respectively. As shown in FIG. 2, the upper lid member F2 is integrally provided with an upper tube portion F21 through which pure water after filtration can flow out so as to protrude upward. The lower lid member F3 is integrally provided with a lower pipe portion F31 through which pure water after filtration can flow out so as to protrude downward. A cap Fc for preventing contamination inside the filtration filter F is liquid-tightly attached to the upper tube portion F21 and the lower tube portion F31. The outer diameters of the upper lid member F2 and the lower lid member F3 of the filtration filter F are larger than the outer diameter of the central portion in the vertical direction of the housing F1.

  A plurality of hollow fiber membranes F4 (filter material) are accommodated in the housing F1. The hollow fiber membrane F4 is a semipermeable membrane in which extremely minute holes are formed in the thickness direction of the membrane. Both ends of the hollow fiber membrane F4 are fixed by a sealant and are bundled so that the ends are aligned, and the space inside the hollow fiber membrane F4 communicates with the spaces inside the upper tube portion F21 and the lower tube portion F31. doing.

  The housing F1 includes an inflow pipe portion F11 (flow pipe portion) for flowing raw water into the housing F1, and an outflow pipe portion F12 (flow pipe portion) for flowing raw water out of the housing F1, and the inflow pipe portion F11 is a housing. The outflow pipe portion F12 protrudes rearward from the upper portion of the outer peripheral surface of the housing F1.

  In the following description, with respect to the inflow pipe portion F11 and the outflow pipe portion F12, the “front end side” indicates the front end side (the right side in FIGS. 1 and 2) of the inflow pipe portion F11 and the outflow pipe portion F12. "Indicates the proximal end side (the left side in FIGS. 1 and 2) of the inflow pipe portion F11 and the outflow pipe portion F12.

  On the outer peripheral surface of the inflow pipe portion F11, an inflow side annular groove F11a (lock recess) for engaging a lock ball 434 (engagement member) of the inflow side connection portion 40 of the holder 1 to be described later is provided. An inflow side annular flat portion F11b which is formed in the vicinity of the center of the portion F11 in the axial direction and is flat along the axial direction is provided on the outer peripheral surface on the tip side of the inflow side annular groove F11a. The outer diameter of the inflow pipe portion F11 is smaller on the tip side than the inflow side annular flat portion F11b, and an inflow side step portion F11c is formed corresponding to the formation of the small diameter portion.

  Similarly, on the outer peripheral surface of the outflow pipe portion F12, an outflow side annular groove F12a (locking recess) for engaging the locking ball 534 (engagement member) of the outflow side connection portion 50 is provided in the outflow pipe portion F12. An outflow side annular flat portion F12b which is formed in the vicinity of the center in the axial direction and is flat along the axial direction is provided on the outer peripheral surface on the tip side of the outflow side annular groove F12a. On the tip side of the outflow side annular flat portion F12b, the outflow pipe portion F12 has a small outer diameter, and an outflow side step portion F12c is formed corresponding to the formation of the small diameter portion.

  Of the raw water that has flowed into the housing F1 from the inflow pipe portion F11, the filtered pure water that has passed through the hollow fiber membrane F4 flows out of the upper tube portion F21 through the hollow fiber membrane F4 and passes through the hollow fiber membrane F4. The raw water that does not pass is configured to flow out of the housing F1 from the outflow pipe portion F12.

  3 to 5 show a holder 1 for holding the filtration filter F. FIG. The holder 1 is used by being attached to, for example, a side surface (not shown) of a dialysis machine. The holder 1 includes a bent plate-shaped holder body 10, a cover part 20 that covers a part of the holder body 10, a knob 31 (operation part) operated by an operator, and an inflow pipe part F11 of the filtration filter F. The inflow side connection part 40 connected and the outflow side connection part 50 to which the outflow pipe part F12 is connected are provided.

  The holder 1 is provided with a latching portion (not shown) for attaching to the side surface of a dialysis machine (not shown), for example, and the side surface of the dialysis machine so that the longitudinal direction of the holder body 10 is in the vertical direction. It is used by attaching to etc. In the following description, with reference to the state in which the longitudinal direction of the holder body 10 is the vertical direction, “upper side” indicates the upper side in FIG. 3, “lower side” indicates the lower side in FIG. "Indicates the right side in FIG. 3," left side "indicates the left side in FIG. 3," front side "indicates the left side in FIG. 4, and" rear side "indicates the right side in FIG.

  The holder body 10 includes a front plate portion 11 positioned on the front side, a right plate portion 12 extending rearward from the right edge portion of the front plate portion 11, and a left plate portion 13 extending rearward from the left edge portion of the front plate portion 11. As shown in FIG. 4, the upper and lower portions of the right plate portion 12 and the left plate portion 13 are cut out. As shown in FIG. 5, the upper plate portion 14 and the lower plate portion 15 are attached to the upper and lower portions of the holder body 10 so as to be perpendicular to the front plate portion 11, the right plate portion 12, and the left plate portion 13, respectively. It has been.

  The cover part 20 is attached so as to cover the center part in the vertical direction of the holder body 10 from the rear side. The cover portion 20 is a plate-like member whose left and right direction both ends are bent forward, and the left and right plates of the cover portion 20 are fastened to the right plate portion 12 and the left plate portion 13 of the holder body 10 by screws or the like. 21 is attached.

  As shown in FIGS. 3 and 4, a disc-shaped knob 31 that can be rotated by an operator is attached to the right side of the right plate portion 12 of the holder body 10 at the center in the vertical direction. As shown in FIG. 4, the diameter of the knob 31 is set to be slightly larger than the width in the front-rear direction at the center in the vertical direction of the right plate 12 of the holder body 10. Further, as shown in FIG. 3, a plurality of grooves extending in the thickness direction are formed on the outer peripheral surface of the knob 31 as a slip stopper. The knob 31 is integrally connected to a rotating shaft 32 (shown in FIG. 5) having a rectangular column shape that penetrates the right plate portion 12 of the holder body 10. The rotation shaft 32 penetrates the right plate portion 12 vertically and extends in the left-right direction to the vicinity of the center between the right plate portion 12 and the left plate portion 13 of the holder body 10. As shown in FIG. 5, a disc-shaped eccentric cam 33 is connected to the end (left end) opposite to the knob 31 in the rotating shaft 32. The eccentric cam 33 is integrally connected to the rotation shaft 32 so as to be parallel to the right plate portion 12 of the holder body 10, and the rotation shaft 32 is located at a position deviated from the center of the eccentric cam 33. It is fixed. The outer peripheral surface of the eccentric cam 33 abuts on a connecting rod 61 (connecting member), which will be described later, from behind, so that the connecting rod 61 can be pushed forward and moved.

  A compression spring 34 that presses the connecting rod 61 rearward is attached to the rear surface of the central portion in the vertical direction of the front plate portion 11 so as to protrude rearward. When the compression spring 34 presses and moves the connecting rod 61 rearward, the outer peripheral surface of the eccentric cam 33 in contact with the connecting rod 61 is also pressed rearward, so that the operator rotates the knob 31. In a normal state where the eccentric cam 33 is not shown (shown in FIG. 5), the eccentric cam 33 is rotated and stopped so that the rotating shaft 32 is positioned in front of the center of the eccentric cam 33.

  As shown in FIGS. 3 to 5, the inflow side connection portion 40 is provided through the lower portion of the holder body 10 in the front-rear direction. Further, the outflow side connection portion 50 is provided so as to penetrate the upper portion of the holder body 10 in the front-rear direction.

  In FIG. 6, the enlarged view of the inflow side connection part 40 is shown. In the following description, the inflow side connection portion 40 will be described, but the outflow side connection portion 50 has the same configuration as that of the inflow side connection portion 40 except that it is vertically symmetric. Description is omitted.

  The inflow side connection portion 40 includes a cylindrical casing 41 that protrudes forward from the front plate portion 11 of the holder body 10, and a one-touch lock mechanism 42 in which most of the casing 41 is accommodated.

  In the following description of the holder 1, unless otherwise specified, the directions of “axial direction”, “radial direction”, and “circumferential direction” are determined with reference to the casing 41. That is, the “axial direction” indicates a direction along the central axis of the casing 41, the “radial direction” indicates a direction orthogonal to the central axis of the casing 41, and the “circumferential direction” indicates the center of the casing 41. The rotation direction around the axis is shown. The “front end side” indicates the front side (left side in FIG. 6) of the casing 41, and the “base end side” indicates the rear side (right side in FIG. 6).

  The base end portion of the casing 41 is fixed to the front plate portion 11 of the holder main body 10 via a part of the insertion cylinder 43 constituting the one-touch lock mechanism 42. The inner diameter on the distal end side of the casing 41 is smaller than the inner diameter on the proximal end side. Corresponding to the formation of this smaller diameter portion, a casing inner step 411 is formed on the inner peripheral surface of the casing 41 near the center in the axial direction. Has been. A cutout portion 412 extending in the axial direction is formed in the upper portion of the tip portion of the casing 41. As shown in FIG. 3, a plurality of chamfered portions 413 are formed on the outer peripheral surface of the casing 41.

  As shown in FIG. 6, the one-touch lock mechanism 42 includes a plurality of locks that can be engaged with the inflow side annular groove F11a of the inflow tube portion F11 in addition to the insertion tube 43 into which the inflow tube portion F11 of the filtration filter F is inserted. A ball 434, a lock cylinder 44 (lock member) that regulates the position of the lock ball 434, and a switching cylinder 45 (switch member) that switches the lock cylinder 44 from the unlocked position to the locked position.

  The insertion cylinder 43 includes a flange portion 431 that protrudes radially outward and extends annularly in the vicinity of the center in the axial direction. The flange portion 431 is fixed to the front surface of the front plate portion 11 of the holder body 10, and the base end portion of the casing 41 is fixed to the front surface of the flange portion 431. A pin insertion hole 431a into which an inflow side unlocking pin 64 described later is inserted is formed so as to penetrate the flange portion 431 in the axial direction. A plurality of the pin insertion holes 431a are formed at intervals in the circumferential direction.

  The insertion cylinder 43 includes a tube connection pipe portion 432 for connecting a raw water supply tube (not shown) on the rear side of the flange portion 431. The tube connection pipe part 432 extends through the front plate part 11 of the holder body 10 to the rear side. The tube connecting pipe portion 432 is provided with a locking portion 432a for preventing the raw water supply tube from coming off when the raw water supply tube is connected so as to protrude outward in the radial direction.

  A predetermined region on the distal end side (front side) of the insertion tube 43 is a thin portion 433, and a thin side step portion 433 a is formed on the outer peripheral surface of the insertion tube 43 by the formation of the thin portion 433. Near the center of the thin portion 433 in the axial direction, a ball accommodation hole 433b (engagement member accommodation hole) for accommodating the locking ball 434 is spaced circumferentially so as to penetrate the wall of the thin portion 433. A plurality are formed.

  The locking ball 434 protrudes radially inward from the inner peripheral surface of the insertion tube 43 and engages with the inflow side annular groove F11a of the inflow pipe portion F11, and does not engage with the inflow side annular groove F11a. It is accommodated so that it can reciprocate between engagement positions. As will be described later, the position of the locking ball 434 is switched from the non-engagement position to the engagement position by the lock cylinder 44. The diameter of the locking ball 434 is set to be approximately equal to the sum of the thickness of the thin portion 433 and the depth of the inflow side annular groove F11a of the inflow tube portion F11. Therefore, as will be described later, when the locking ball 434 is engaged with the inflow side annular groove F <b> 11 a, the locking ball 434 does not protrude from the outer peripheral surface of the insertion cylinder 43.

  An O-ring 435 is accommodated as a seal material for suppressing water leakage when the inflow pipe portion F11 is connected to the proximal end side of the inner peripheral surface of the insertion cylinder 43 from the ball accommodation hole 433b. The length from the ball receiving hole 433b to the O-ring 435 in the axial direction of the insertion cylinder 43 is set to be approximately the same as the length from the inflow side annular groove F11a to the inflow side stepped portion F11c in the axial direction of the inflow pipe portion F11. Yes. Therefore, as will be described later, when the inflow pipe portion F11 is inserted into the insertion tube 43 and the locking ball 434 engages with the inflow side annular groove F11a, the inflow side step portion F11c comes into contact with the O-ring 435. It has become.

  The lock cylinder 44 is disposed so as to be capable of reciprocating in the axial direction so as to surround the outer peripheral surface of the insertion cylinder 43 closer to the tip than the flange portion 431. The length of the lock cylinder 44 in the axial direction is set to be shorter than the distance between the distal end surface of the insertion cylinder 43 and the front surface of the flange portion 431. Therefore, in the state of FIG. 6 in which the distal end surface of the lock cylinder 44 and the distal end surface of the insertion cylinder 43 are arranged on the same plane, a gap is formed between the proximal end surface of the lock cylinder 44 and the front surface of the flange portion 431. ing.

  On the inner peripheral surface on the distal end side of the lock cylinder 44, a locking protrusion 441 is provided over the entire circumference in the circumferential direction. A locking surface 441 a for fixing the locking ball 434 in the engagement position extends in the axial direction at the protruding end of the locking protrusion 441, and the locking surface 441 a is a thin portion of the insertion tube 43. It is in sliding contact with the outer peripheral surface of 433. Of the side surfaces of the locking protrusion 441, the side surface facing the axial base end side is an inclined surface 441b that is inclined so as to be positioned radially outward as it goes to the axial base end side. In the state of FIG. 6, the inclined surface 441 b is separated from the thin-walled side step portion 433 a of the insertion cylinder 43 toward the distal end side.

  The lock cylinder 44 is disposed at a lock release position where the lock surface 441a is positioned on the distal end side of the lock ball 434 and at a base end side of the lock release position, and the lock surface 441a is formed on the lock ball 434 from the radially outer side. It can reciprocate between the abutting lock positions. When the lock cylinder 44 is in the unlocked position, the locking ball 434 projects radially outward from the outer peripheral surface of the insertion cylinder 43 and can be positioned in the non-engagement position. On the other hand, when the lock cylinder 44 is in the lock position, the lock surface 441a presses the lock ball 434 radially inward to fix the lock ball 434 so as not to move radially outward from the engagement position. When the lock cylinder 44 moves from the unlocked position to the locked position, the inclined surface 441b moves toward the proximal end, thereby pressing the locking ball 434 at the radially disengaged position radially inward. And moved to the engagement position.

  On the outer peripheral surface of the lock cylinder 44, an annular support ridge portion 442 that supports a base end portion of a moving coil spring 48 (elastic member) described later is provided on the base end side with respect to the lock ridge portion 441. .

  The switching cylinder 45 is arranged to reciprocate in the axial direction so as to surround the outer peripheral surface of the lock cylinder 44. The outer peripheral surface of the switching cylinder 45 is slidably in contact with the inner peripheral surface of the casing 41 on the tip side of the casing inner step 411 and guided in the axial direction.

  At the base end portion of the switching cylinder 45, an annular engagement ridge portion 451 that comes into contact with and engages with the casing inner step portion 411 from the base end side is provided so as to protrude outward in the radial direction. The annular engagement protrusion 451 engages with the casing inner step 411 so that the switching cylinder 45 does not come off from the front end side of the casing 41. The base end surface of the switching cylinder 45 and the front surface of the flange portion 431 are separated from each other in the axial direction, and a fixed coil spring 47 described later is disposed between the two.

  An extension disk part 452 extending radially inward is provided at the tip of the switching cylinder 45, and an opening through which the inflow pipe part F11 is inserted so as to penetrate the center of the extension disk part 452 is provided. Is formed. The lower part of the distal end surface (end surface on the filtration filter F side) of the extended disc portion 452 is in contact with the outer peripheral surface of the filtration filter F when a head portion 46 described later contacts the outer peripheral surface of the filtration filter F. It is the contact surface 452a (contact part) which contacts. The contact surface 452 a is located at a portion away from the head portion 46 in the circumferential direction of the switching cylinder 45.

  A head portion 46 that contacts the outer peripheral surface of the filtration filter F is provided on the upper portion of the extended disc portion 452 of the switching cylinder 45 so as to protrude from the front end surface of the extended disc portion 452 to the front end side. ing. The protruding length of the head portion 46 from the extended disk portion 452 (the axial length of the portion protruding from the leading end surface of the head portion 46 to the leading end side) is the upper lid member F2 and the lower lid of the filtration filter F. It is set to about one half of the difference between the outer diameter of the member F3 and the outer diameter of the central portion in the vertical direction of the housing F1. Therefore, as will be described later, when the inflow pipe portion F11 is inserted into the insertion tube 43 and the head portion 46 contacts the outer peripheral surface of the filtration filter F, the contact surface 452a also contacts the outer peripheral surface of the filtration filter F. It comes to touch.

  As shown in FIGS. 3 and 6, a guide protrusion 461 extending in the axial direction is provided on the upper portion of the head portion 46 from the tip of the head portion 46 to the vicinity of the center in the axial direction of the switching cylinder 45. The guide protrusion 461 is inserted into the notch 412 at the top of the casing 41. In the state of FIG. 6 where no external force is applied, the axial proximal end portion of the guide protrusion 461 is farther away from the proximal end portion of the notch portion 412.

  A ring spring 453 that prevents the lock cylinder 44 from coming out of the switching cylinder 45 toward the proximal end side is fixed to the inner peripheral surface of the switching cylinder 45 on the proximal end side. The ring spring 453 is positioned on the axial base end side of the annular support protrusion 442 of the lock cylinder 44, and the ring spring 453 is located on the axial base end side of the annular support protrusion 442 of the lock cylinder 44. By abutting on the side surface, the lock cylinder 44 is prevented from being disengaged from the switching cylinder 45 toward the base end side. A spring accommodating recess 454 for accommodating a moving coil spring 48 to be described later is formed on the inner peripheral surface of the switching cylinder 45 closer to the tip than the ring spring 453.

  The one-touch lock mechanism 42 further includes a fixed coil spring 47 and a moving coil spring 48.

  The fixed coil spring 47 is disposed between the flange portion 431 of the insertion tube 43 and the proximal end portion of the switching tube 45, and one end portion in the expansion / contraction direction (right end portion in FIG. 6) is the front surface of the flange portion 431 of the insertion tube 43. The other end (the left end in FIG. 6) is in contact with the proximal end surface of the switching cylinder 45 and presses the switching cylinder 45 toward the distal end side.

  The moving coil spring 48 is accommodated in the spring accommodating recess 454 of the switching cylinder 45, and one end portion in the expansion / contraction direction (the left end portion in FIG. 6) abuts the surface on the tip side of the spring accommodating recess 454, and the other end portion (in FIG. 6). The right end portion) is in contact with the surface of the annular support protrusion 442 of the lock cylinder 44 on the distal end side in the axial direction, and presses the lock cylinder 44 toward the proximal end side. The spring constant of the moving coil spring 48 is set slightly larger than the spring constant of the fixed coil spring 47. When the moving coil spring 48 is elastically deformed, the switching cylinder 45 can move relative to the lock cylinder 44 in the axial direction.

  In the state of FIG. 6, due to the elastic force of the fixed coil spring 47 and the moving coil spring 48, the proximal end surface of the extended disc portion 452 of the switching cylinder 45 is positioned farther to the distal end side than the distal end surface of the insertion cylinder 43. is there. Further, the lock surface 441 a of the lock cylinder 44 is located on the tip side of the lock ball 434, and the inclined surface 441 b is in a position where it abuts on the lock ball 434.

  As shown in FIG. 5, like the inflow side connection portion 40, the outflow side connection portion 50 includes a casing 51 and a one-touch lock mechanism 52, and the one-touch lock mechanism 52 includes an insertion tube 53 and a plurality of locking balls. 534 (engagement member), lock cylinder 54 (lock member), switching cylinder 55 (switching member), head portion 56, fixed coil spring 57, and moving coil spring 58 (elastic member). Yes. Further, the insertion cylinder 53 includes a tube connection pipe portion 532 to which a drainage tube (not shown) for discharging raw water is connected to the outside of the housing F1.

  The connecting rod 61 extends in the vertical direction between the compression spring 34 and the eccentric cam 33 described above. A circular recess for accommodating the rear portion of the compression spring 34 is formed in the front surface of the central portion of the connecting rod 61 in the vertical direction. Since the compression spring 34 accommodated in the circular recess presses the connecting rod 61 backward, the connecting rod 61 contacts the outer peripheral surface of the eccentric cam 33 and presses the eccentric cam 33 backward.

  A disc-shaped inflow side connection plate 62 (connection member) and an outflow side connection plate 63 (connection member) are fixed to the upper end portion and the lower end portion of the connection rod 61 so as to extend vertically. As shown in an enlarged view in FIG. 6, an inflow side tube insertion hole 62 a through which the tube connection tube portion 432 is inserted is formed in the center of the inflow side connection plate 62. A base end portion of an inflow side lock release pin 64 (lock release member) that presses the lock cylinder 44 from the lock position toward the lock release position is fixed around the inflow side tube portion insertion hole 62a. A plurality of inflow side unlocking pins 64 are provided so as to extend in the front-rear direction, penetrate the front plate portion 11 of the holder main body 10, and in the pin insertion hole 431 a formed in the flange portion 431 of the insertion cylinder 43 in the axial direction. Is inserted in such a manner that it can reciprocate. The distal end of the inflow side unlocking pin 64 and the base end surface of the lock cylinder 44 are opposed to each other, and in the state of FIG. 6 where no external force acts, the inflow side unlocking pin 64 is more proximal than the proximal end surface of the lock cylinder 44. Separated to the end side. As will be described later, when the operator rotates the knob 31, the inflow side unlock pin 64 presses the lock cylinder 44 forward, and moves the lock cylinder 44 to the unlock position.

  As shown in FIG. 5, the outflow side connecting plate 63 has a vertically symmetrical structure with the inflow side connecting plate 62, and the outflow side connecting plate 63 has the lock cylinder 54 directed from the locked position to the unlocked position. The outflow side lock release pin 65 to be pressed is fixed.

  Next, the case where the filtration filter F is hold | maintained at the holder 1 comprised as mentioned above is demonstrated. First, as shown in FIG. 7, the filtration filter F is arranged in front of the holder 1 so that the longitudinal direction of the holder body 10 and the longitudinal direction of the housing F1 of the filtration filter F coincide. Here, the inflow pipe part F11 and the outflow pipe part F12 of the filtration filter F protrude toward the holder body 10, and the inflow side connection part 40 and the outflow side connection part 50 face the inflow pipe part F11 and the outflow pipe part F12, respectively. Thus, the filter F is arranged.

  FIG. 8 shows an enlarged cross-sectional view of the inflow side connection portion 40 in this state. In this state, the lock cylinder 44 is positioned at the lock release position where the lock surface 441a is located on the tip side of the lock ball 434 by the fixed coil spring 47 and the ring spring 453. It is possible to reciprocate in the radial direction of the insertion cylinder 43 between an engagement position that protrudes radially inward from the inner peripheral surface of the insertion cylinder 43 and a non-engagement position that is radially outward of the engagement position. .

  Next, as shown in FIG. 9, the filtration filter F is brought closer to the holder body 10 side, and the distal end portion (rear side portion) of the inflow pipe portion F11 is inserted into the insertion tube 43 of the inflow side connection portion 40. At this time, the inflow-side annular flat portion F11b contacts the locking ball 434 from the inner side in the radial direction of the insertion tube 43, and pushes out the locking ball 434 toward the outer side in the radial direction. As a result, the locking ball 434 is pushed out so as not to protrude radially inward from the inner peripheral surface of the insertion tube 43 but to protrude radially outward from the outer peripheral surface of the insertion tube 43. Then, the locking ball 434 presses the inclined surface 441b of the lock cylinder 44 radially outward and to the distal end side, and the lock cylinder 44 moves to the distal end side. When the lock cylinder 44 moves to the distal end side, the moving coil spring 48 disposed between the annular support protrusion 442 of the lock cylinder 44 and the distal-side surface of the spring accommodating recess 454 of the switching cylinder 45 is compressed. Therefore, the moving cylinder spring 48 presses the switching cylinder 45 toward the distal end side, but the annular engagement protrusion 451 of the switching cylinder 45 contacts the casing inner step 411 of the casing 41 from the proximal end side. Therefore, the switching cylinder 45 does not move to the front end side and will not come out from the casing 41 to the front end side.

  Further, when the filter F is brought closer to the holder body 10 side, as shown in FIG. 10, the distal end surface of the head portion 46 comes into contact with the outer peripheral surface of the housing F1 and is pressed to the proximal end side. The contact surface 452a comes into contact with the outer peripheral surface of the lower lid member F3 and is pressed to the proximal end side, and the switching cylinder 45 is stably pressed to the proximal end side. At this time, the switching cylinder 45 is moved to the proximal end side (axial direction) of the insertion cylinder 43 by the force that the filtration filter F acts on the switching cylinder 45, and the distal end side portions of the fixed coil spring 47 and the moving coil spring 48 are moved. Is pressed toward the base end side. However, since the locking ball 434 is also brought into contact with the inflow side annular flat portion F11b of the inflow pipe portion F11 from the inside in the radial direction and pushed out toward the outside in the radial direction at this time, the locking ball 434 is inserted. It remains in the non-engagement position protruding radially outward from the outer peripheral surface of the tube 43. Therefore, since the lock ball 434 contacts the inclined surface 441b of the lock cylinder 44 from the base end side and the radially inner side, the lock cylinder 44 cannot move to the base end side and is held at the lock release position. At this time, the moving coil spring 48 disposed between the axially distal end surface of the spring accommodating recess 454 of the switching cylinder 45 and the annular support protrusion 442 of the lock cylinder 44 is compressed, so that the switching cylinder Since 45 is movable relative to the lock cylinder 44, the switching cylinder 45 moves to the proximal end side while compressing the fixed coil spring 47 and the moving coil spring 48. The coil spring 48 stores an elastic force.

  Further, when the filter F is brought closer to the holder body 10 side, the inflow side stepped portion F11c of the inflow pipe portion F11 is brought into contact with the O-ring 435 inside the insertion tube 43 from the front side (the tip side of the insertion tube 43) as shown in FIG. And the position of the locking ball 434 in the axial direction coincides with the position of the inflow side annular groove F11a of the inflow tube portion F11, and the position of the inflow side annular groove F11a of the inflow tube portion F11 is the lock ball. The insertion position corresponds to 434. In this state, the locking ball 434 can move radially inward from the non-engagement position and engage with the inflow side annular groove F11a of the inflow tube portion F11, and the lock ball 434 can be engaged with the inflow tube portion. When engaged with the inflow-side annular groove F11a of F11, the lock cylinder 44 in the lock release position can be moved to the lock position on the base end side. Here, the moving coil spring 48 is compressed by the operator receiving a force that brings the filter F close to the holder body 10 side, and presses the annular support protrusion 442 of the lock cylinder 44 toward the base end side. When the elastic force stored in the moving coil spring 48 is released, the lock cylinder 44 moves from the unlock position to the base end side. At this time, since the inclined surface 441b of the lock cylinder 44 is also moved to the proximal end side, the locking ball 434 pressed radially inward by the inclined surface 441b is radially inward from the non-engagement position to the engagement position. To engage with the inflow side annular groove F11a of the inflow pipe portion F11. Then, the lock cylinder 44 is surely moved to the lock position on the proximal end side by the elastic force stored in the moving coil spring 48, and the lock surface 441 a of the lock cylinder 44 comes into contact with the lock ball 434, so Will come to press.

  In this state, the locking ball 434 is fixed to the radially inner engagement position by the lock surface 441a of the lock cylinder 44, and thus moves from the radially inner engagement position to the radially outer non-engagement position. It is not possible. Therefore, the inflow pipe portion F11 of the filtration filter F cannot be removed from the insertion tube 43, and the filtration filter F cannot move forward. Accordingly, in this state, the proximal end portion of the switching cylinder 45 is pressed toward the distal end side by the fixed coil spring 47, but the contact surface 452a of the switching cylinder 45 and the distal end surface of the head portion 46 are the outer peripheral surface of the filtration filter F. Therefore, the switching cylinder 45 cannot move forward, that is, forward. Therefore, the inflow pipe portion F11 is connected to the inflow side connection portion 40 securely. At this time, since the inflow side step portion F11c of the inflow tube portion F11 is in contact with the O-ring 435 inside the insertion tube 43, it flows into the inflow tube portion F11 through the tube connection tube portion 432 of the insertion tube 43. The raw water is prevented from leaking from the gap between the insertion tube 43 and the inflow pipe portion F11.

  As for the outflow side connection portion 50, similarly to the inflow side connection portion 40, the outflow pipe portion F <b> 12 is reliably connected to the outflow side connection portion 50 when the filter F is brought closer to the holder body 10 side. Therefore, the inflow pipe portion F11 and the outflow pipe portion F12 of the filtration filter F are simultaneously connected to the inflow side connection portion 40 and the outflow side connection portion 50 only by applying a force in a direction in which the filtration filter F is brought closer to the holder body 10. The filter F can be reliably and simply held in the holder 1.

  Next, the case where the filtration filter F hold | maintained at the holder 1 is isolate | separated from the holder 1 is demonstrated. First, as shown in FIG. 5, the rotation shaft 32 is fixed at a position shifted from the center of the eccentric cam 33, and in the state where no external force is applied, the eccentric cam 33 is configured so that the rotation shaft 32 is eccentric. It is rotated and stopped so as to be positioned in front of the center of 33. When the knob 31 shown in FIG. 7 or the like is rotated counterclockwise in this state, the eccentric cam 33 is also rotated counterclockwise via the rotary shaft 32 as shown in FIG. Of the eccentric cam 33 presses the connecting rod 61 forward. When the connecting rod 61 moves forward by this pressing force, the compression spring 34 is compressed and stores elastic force, and the inflow side connecting plate 62 and the outflow side connecting plate 63 fixed to the connecting rod 61 also move forward. .

  At this time, as shown in an enlarged view in FIG. 13, the inflow side lock release pin 64 supported by the inflow side connection plate 62 also moves forward, that is, toward the tip side. Then, the distal end of the inflow side lock release pin 64 comes into contact with the proximal end surface of the lock cylinder 44, and the lock cylinder 44 is pressed toward the distal end side and moves from the lock position on the proximal end side to the distal end side. When the lock cylinder 44 moves to the distal end side to the unlocked position, the lock surface 441a is positioned on the distal end side with respect to the locking ball 434, so that the lock surface 441a is brought into contact with the lock surface 441a from the outside in the radial direction. The fixed locking ball 434 can be moved from the outer peripheral surface of the insertion cylinder 43 to the non-engaging position protruding radially outward. When the locking ball 434 moves to the non-engagement position, the inflow pipe portion F11 can move in a direction to come out of the insertion cylinder 43, and the filtration filter F and the switching cylinder 45 can also move forward. . Here, the fixed coil spring 47 is compressed by an operator receiving a force that brings the filtration filter F closer to the holder body 10 side, pressing the proximal end surface of the switching cylinder 45 toward the distal end side, and the moving coil spring 48 is Since the inflow side unlocking pin 64 is compressed by receiving a force pressing the lock cylinder 44 toward the distal end side and presses the surface on the distal end side of the spring accommodating recess 454 of the switching cylinder 45 toward the distal end side, the fixed coil spring 47 When the elastic force stored in the moving coil spring 48 is released, the switching cylinder 45 is pressed toward the tip side and moves. At the same time, the outer peripheral surface of the filtration filter F is pressed forward by the contact surface 452a and the head portion 46, the filtration filter F moves forward, and the inflow pipe portion F11 moves in a direction to come out of the insertion tube 43. Then, the locking ball 434 is pushed radially outward of the insertion tube 43 along the side surface of the inflow side annular groove F11a and moves to the disengagement position, and the locking ball 434 has a diameter on the inflow side annular flat portion F11b. Abutted from the inside in the direction and pressed outward in the radial direction.

  Then, as shown in FIG. 14, the switching cylinder 45 is further moved to the distal end side by the elastic force of the fixed coil spring 47 and the moving coil spring 48, and the annular engagement protrusion 451 of the switching cylinder 45 is moved to the casing 41. The casing inner step 411 is brought into contact with and engaged from the base end side. Then, the switching cylinder 45 cannot move to the tip side from this position and stops. In this state, since the locking ball 434 is in the non-engagement position, the inflow pipe portion F11 can be removed from the inflow side connection portion 40.

  As shown in FIG. 15, when the operator moves the filter F forward, the inflow pipe portion F11 is completely removed from the inflow side connection portion 40. At this time, when the operator releases his hand from the knob 31 (shown in FIG. 7 and the like), the connecting rod 61 is moved backward by the elastic force stored in the compression spring 34 (shown in FIGS. 5 and 12). The inflow side connection plate 62, the outflow side connection plate 63, the inflow side lock release pin 64, and the outflow side lock release pin 65 also move rearward.

  The above-described series of movements occur not only in the inflow side connection portion 40 but also in the outflow side connection portion 50 at the same time. As a result, the filtration filter F is separated from the holder 1. Therefore, by simply rotating the knob 31 of the holder 1, the connection between the inflow side connection part 40 and the inflow pipe part F11 and the connection between the outflow side connection part 50 and the outflow pipe part F12 are simultaneously released, and the filtration filter F Can be separated from the holder 1. In the above description, the knob 31 is rotated counterclockwise. However, the eccentric cam 33 may be rotated by rotating the knob 31 clockwise. At this time, the center of the eccentric cam 33 moves downward while moving forward, and the outer peripheral surface of the eccentric cam 33 presses the connecting rod 61 forward. The connection with the pipe part F11 and the connection between the outflow side connection part 50 and the outflow pipe part F12 can be simultaneously released.

  As described above, according to the holder 1 according to this embodiment, the filtration filter F acts on the switching cylinders 45 and 55 when the inflow pipe portion F11 and the outflow pipe portion F12 are inserted into the insertion cylinders 43 and 53, respectively. Since the lock cylinders 44 and 54 are moved from the unlocked position to the locked position by force, the filtration filter F is inserted into the holder 1 without performing complicated operations such as operating the coupler with both hands and operating the lock lever. Can be reliably and simply held.

  Further, since the moving coil spring 48 that allows the relative movement of the lock cylinder 44 with respect to the switching cylinder 45 is provided in the inflow side connection portion 40, even if there is an error in the dimensions of the inflow pipe portion F11 and the inflow side connection portion 40. The inflow pipe portion F11 can be smoothly connected to the inflow side connection portion 40.

  In addition, since the inflow side lock release pin 64 that presses the lock cylinder 44 in the lock position toward the lock release position is provided, the filtration filter F can be easily separated from the holder 1.

  Further, the inflow side lock release pin 64 and the outflow side lock release pin 65 are connected to each other via the connecting rod 61, the inflow side connecting plate 62, and the outflow side connecting plate 63, and the operator operates the connecting rod 61 with the knob 31. Since only the knob 31 is operated, the connection between the inflow side connection part 40 and the inflow pipe part F11 and the connection between the outflow side connection part 50 and the outflow pipe part F12 are released, and the filtration filter F is attached to the holder. 1 can be separated.

  Further, since the head portion 46 and the contact surface 452a that are separated in the circumferential direction of the switching cylinder 45 abut on the outer peripheral surface of the filter F, the switching cylinder 45 stably moves in the insertion direction of the inflow pipe portion F11, A force for moving from the unlocked position to the locked position can be transmitted to the lock cylinder 44.

(Other embodiments)
In the above-described embodiment, the operation unit is the rotatable knob 31, and the eccentric cam 33 is rotated by the operation of the knob 31 to move the connecting rod 61 forward, but it can be reciprocated in the front-rear direction. A lever (not shown) may be attached to the connecting rod 61, and the connecting rod 61 may be moved forward by operating the lever.

  Moreover, in the above-mentioned embodiment, although the separation distance between the inflow side connection part 40 and the outflow side connection part 50 is fixed, the distance adjustment means (not shown) for adjusting this separation distance is provided. May be. For example, a slide portion (not shown) is provided between the inflow side connection portion 40 and the outflow side connection portion 50 in the holder 1 so that the distance between the inflow side connection portion 40 and the outflow side connection portion 50 can be adjusted. Also good. In this case, filtration filters having different shapes and sizes can be held by the same holder 1.

  In the above-described embodiment, the holder 1 may be provided with an angle adjusting unit (not shown) for adjusting the angle formed by the longitudinal direction of the housing F1 and the vertical line. In this case, for example, the angle can be adjusted so that bubbles do not accumulate in the housing F1 of the filtration filter F, so that the filtration area can be kept wide, and an error in the dialyzer caused by pressure fluctuations in the liquid flow path can occur. Can be suppressed.

  In the above-described embodiment, the holder 1 is provided with an indicator (not shown) indicating whether or not the inflow pipe portion F11 and the outflow pipe portion F12 are connected to the inflow side connection portion 40 and the outflow side connection portion 50. Also good. In this case, since the operator can easily and surely check whether the inflow pipe portion F11 and the outflow pipe portion F12 are in the connected state, when at least one of the inflow pipe portion F11 and the outflow pipe portion F12 is in the disconnected state. Thus, it is possible to avoid the occurrence of water leakage due to erroneous use of the filter F.

  In the above-described embodiment, a protective cover (not shown) for protecting the inflow side connection portion 40 and the outflow side connection portion 50 may be detachably attached to the holder 1. In this case, it is possible to suppress contamination of the liquid flowing in the housing F1 due to foreign matters adhering to the inflow side connection portion 40 and the outflow side connection portion 50. Moreover, damage to the filter F and the holder 1 due to an accident can be reduced.

  As described above, the holder according to the present invention can be used, for example, when holding a microfiltration filter or the like attached to a dialysis machine.

DESCRIPTION OF SYMBOLS 1 Holder 10 Holder main body 20 Cover part 31 Knob (operation part)
32 Rotating shaft 33 Eccentric cam 34 Compression spring 40 Inflow side connection part 41 Casing 42 One-touch lock mechanism 43 Insertion cylinder 433b Ball accommodation hole (engagement member accommodation hole)
434 Locking ball (engaging member)
44 Lock cylinder (locking member)
441a Lock surface 441b Inclined surface 45 Switching cylinder (switching member)
452a Contact surface (contact portion)
46 Head 47 Fixed coil spring 48 Moving coil spring (elastic member)
50 Outflow side connection portion 51 Casing 52 One-touch lock mechanism 53 Insertion tube 532 Tube connection tube portion 534 Locking ball (engaging member)
54 Lock cylinder (lock member)
55 Switching cylinder (switching member)
56 Head 57 Fixed coil spring 58 Moving coil spring (elastic member)
61 Connecting rod (connecting member)
62 Inflow side connecting plate (connecting member)
63 Outflow side connection plate (connection member)
64 Inflow side lock release pin (lock release member)
65 Outflow side lock release pin (lock release member)
F Filtration filter F1 Housing F11 Inflow pipe part (circulation pipe part)
F11a Inflow side annular groove (recess for locking)
F12 Outflow pipe section (distribution pipe section)
F12a Outlet side annular groove (recess for locking)
F2 Upper lid member F3 Lower lid member F4 Hollow fiber membrane (filter material)

Claims (4)

A filtration filter holder for holding a filtration filter (F) comprising a cylindrical housing (F1) for accommodating a filtration material (F4),
A holder body (10);
A plurality of connection portions (40, 50) to which a plurality of flow pipe portions (F11, F12) through which liquid flows between the inside and the outside of the housing (F1) are respectively connected;
The plurality of connecting portions (40, 50)
An insertion cylinder (43, 53) into which the flow pipe part (F11, F12) is inserted;
The insertion cylinder (43, 53) is accommodated in the engaging member accommodation hole (433b) penetrating the wall of the insertion cylinder (43, 53), and the diameter of the insertion cylinder (43, 53) from the inner peripheral surface of the insertion cylinder (43, 53). An engagement position that protrudes inward in the direction and engages with a locking recess (F11a, F12a) formed on the outer peripheral surface of the flow pipe section (F11, F12), and the insertion tube (43, 53) an engagement member (moving in the radial direction of the insertion tube (43, 53) between the engagement portion (43, 53) and the non-engagement position that is disposed outside the locking recess (F11a, F12a)). 434, 534),
A lock position for fixing the engagement member (434, 534) to the engagement position, and a lock release position for allowing the engagement member (434, 534) to move from the engagement position to the non-engagement position. A locking member (44, 54) that moves in the axial direction of the insertion tube (43, 53),
When the flow pipe portions (F11, F12) are inserted into the insertion cylinders (43, 53), the lock members (44, 54) are brought into contact with the filtration filter (F) to lock the lock members (44, 54) from the unlock position. A switching member (45, 55) for switching to a position;
Each with
The plurality of switching members (45, 55) are switching cylinders (45, 55) extending from the holder body (10) side to the filtration filter (F) side, and the plurality of flow pipe portions (F11, F12). When the filter is inserted into the plurality of insertion cylinders (43, 53), the force acting on the switching members (45, 55) of the filtration filter (F) causes the plurality of lock members (44, 54). ) Are respectively switched from the unlocked position to the locked position, and the plurality of flow pipe portions (F11, F12) are simultaneously connected to the plurality of connection portions (40, 50), respectively .
The switching cylinders (45, 55) are provided with head portions (46, 56) that contact the filtration filter (F) so as to protrude toward the filtration filter (F),
The switching cylinder (45, 55) has a peripheral surface of the switching cylinder (45, 55) from the head portion (46, 56) of the end face on the filtration filter (F) side of the switching cylinder (45, 55). to distant parts in the direction, when the head portion (46, 56) is in contact with the filtration filter (F), it has abutment portion which abuts with the filtration filter (F) and (452a) Rukoto A filter filter holder. In claim 1,
The connection portions (40, 50) are elastically deformed, so that the switching members (45, 55) relative to the lock members (44, 54) are relatively relative to each other in the axial direction of the insertion tube (43, 53). An elastic member (48, 58) that allows movement;
The elastic members (48, 58) are arranged so that the locking recesses (F11a, F12a) are inserted into the engaging members (434, 54) when the flow pipe portions (F11, F12) are inserted into the insertion cylinders (43, 53). 534) relative to the locking member (44, 54) relative to the locking member (44, 54) with the locking member (44, 54) held in the unlocked position until the insertion position corresponding to 534) is reached. Filter filter holder, characterized in that it allows easy movement. In claim 1 or 2,
A filter filter holder, comprising: a lock release member (64, 65) for pressing the lock member (44, 54) in the lock position toward the lock release position. In claim 3,
Connection members (61, 62,) for connecting the plurality of lock release members (64, 65) that press the plurality of lock members (44, 54) respectively provided in the plurality of connection portions (40, 50) to each other. 63)
An operation unit (31) for an operator to operate the connecting members (61, 62, 63);
A filter filter holder.

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