JP7304258B2 - clamping device - Google Patents

Description

The present invention relates to clamping devices.

A hollow fiber membrane module used for purifying liquids such as blood products and blood has a plurality of liquid passing parts. The liquid-passing part generally has a flange-shaped tip (ferrule part) with a widened diameter. This type of hollow fiber membrane module is usually sterilized before shipment. At this time, the tip of the liquid-permeable part is closed with a cap, and the tip of the liquid-permeable part and the cap are gripped by a clamp device. Sealed.

In a conventional clamping device, for example, two arc-shaped clamping parts are closed, a lever is lowered from one to the other of the clamping parts, and a screw provided on the lever is tightened and gripped ( See Patent Document 1).

British Patent No. 2361753

However, in the clamping device as described above, the tightening force of the screw may be reduced due to thermal expansion of the clamping portion and the like during sterilization performed at high temperatures. In this case, if continuous vibration or a large impact is applied during transportation, for example, the clamp part may come off from the object to be clamped. For this reason, after the sterilization process, it was necessary to retighten the screw of the clamp part from above the sterilization bag.

The present application has been made in view of this point, and an object of the present application is to provide a clamping device capable of preventing a decrease in tightening force after tightening.

As a result of extensive studies, the inventors of the present invention have found that the clamping device includes a gripping member, an annular holding member that is axially fitted into the gripping member to hold the gripping state of the gripping member, and that the gripping member and the holding member are mutually connected. The inventors have found that the above problem can be solved by providing a fixing mechanism for fixing, and have completed the present invention.

That is, the present invention includes the following aspects.
(1) It has a plurality of circular arc-shaped opening/closing parts that are rotatably connected to each other except for one part, and the opening/closing part is opened and closed from the unconnected part to clamp. a gripping member capable of gripping an object; an annular holding member that is axially fitted into the gripping member to hold the gripping state of the gripping member; and a fixing mechanism that fixes the gripping member and the holding member to each other. and, the gripping member has a bolt structure in which a plurality of first ridges are intermittently formed on the annular outer peripheral surface along the circumferential direction, and the holding member has a bolt structure on the annular inner peripheral surface It has a nut structure in which a plurality of second ridges are intermittently formed along the circumferential direction, and the first ridges and the second ridges extend in the circumferential direction when viewed from the axial direction. The holding member is axially fitted into the gripping member at the non-interfering position, and rotated in the circumferential direction from that state, whereby the first The clamping device, wherein the ridge portion and the second ridge portion are screwed together, the holding member holds the holding state of the holding member, and the holding member and the holding member are fixed to each other by the fixing mechanism. .
(2) The fixing mechanism is configured such that the holding member and the gripping member are fixed to each other by rotating the holding member from the non-interfering position by 60° or less in the circumferential direction. A clamping device as described in .
(3) The first ridges and the second ridges are equal in number in the circumferential direction and are provided at equal intervals in the circumferential direction at regular intervals, (1) or (2) ).
(4) The width of the gap between the first ridges is greater than the length of the second ridge in the circumferential direction, and the width of the gap between the second ridges is equal to the width of the first ridge. The clamping device according to (3), which is larger than the circumferential length of the ridge portion of the.
(5) The clamping device according to any one of (1) to (4), wherein each of the first ridges and the second ridges is formed in plurality in the axial direction.
(6) The fixing mechanism includes a plurality of protrusions provided on the outer peripheral surface of the holding member along the circumferential direction, and a plurality of protrusions provided on the gripping member. The clamping device according to any one of (1) to (5), which has a locking portion that
(7) The clamp device according to (6), wherein the projection is provided at a position corresponding to the second ridge along the circumferential direction of the outer peripheral surface of the holding member.
(8) The clamping device according to (6) or (7), wherein the locking portions are provided at two locations facing each other in the circumferential direction of the gripping member.
(9) It has a plurality of arcuate opening/closing parts which are circular in shape as a whole and are rotatably connected to each other except for one part, and the opening/closing parts are opened and closed from the unconnected part at the one point for clamping. a gripping member capable of gripping an object; an annular holding member that is axially fitted into the gripping member to hold the gripping state of the gripping member; and a fixing mechanism that fixes the gripping member and the holding member to each other. and, the gripping member has a bolt structure in which a plurality of first ridges are intermittently formed on the annular outer peripheral surface along the circumferential direction, and the holding member has a bolt structure on the annular inner peripheral surface It has a nut structure in which a plurality of second ridges are intermittently formed along the circumferential direction, and the gripping member and the holding member are arranged such that the holding member is fitted in the gripping member in the axial direction. By rotating in the circumferential direction from the state, the first ridge portion and the second ridge portion are screwed together, and the holding member is configured to hold the gripping state of the gripping member, and the The fixing mechanism has a lock member that is fixed to the holding member so as not to rotate in the circumferential direction and that is axially movably provided, and the lock member moves in an axial direction toward the gripping member. When the holding member is fitted to the gripping member to be fixed to the gripping member, and the lock member is disengaged from the gripping member when the locking member moves away from the gripping member, the holding member is held on the gripping member. A clamping device configured to unlock a member.
(10) The fixing mechanism has grooves extending in the axial direction of the gripping member and arranged side by side in the circumferential direction of the gripping member, and the lock member can be fitted into the grooves. When the holding member is moved in the axial direction toward the gripping member, the protrusion fits into the groove of the gripping member to stop the rotation of the holding member with respect to the gripping member. (9) The clamping device according to (9), wherein the projection disengages from the groove of the gripping member to allow rotation of the holding member with respect to the gripping member when moved in a direction away from the gripping member.
(11) The clamping device according to (9) or (10), wherein the fixing mechanism further includes a regulating member that regulates and releases the movement of the locking member in the direction away from the gripping member.
(12) The restricting member is axially movable together with the locking member and has an engaging portion that is radially elastically deformable with respect to the locking member. The member has a locked portion to which the locking portion of the regulating member is locked, and when the locking member moves in an axial direction toward the gripping member, the regulating member is locked. is locked to the locked portion, the movement of the locking member in the axial direction away from the gripping member is stopped, and the locking portion of the restricting member is elastically deformed in the radial direction of the locking member. The clamping device according to (11), wherein the locking member is disengaged from the locked portion, thereby allowing the locking member to move in the direction away from the gripping member in the axial direction.
(13) The first ridge portion and the second ridge portion are formed so as to be arranged at non-interfering positions that do not interfere with each other in the circumferential direction when viewed from the axial direction, and the holding member is attached to the gripping member. By axially fitting in a non-interfering position and rotating in the circumferential direction from that state, the first ridge portion and the second ridge portion are screwed together, and the holding member is attached to the gripping member. The clamping device according to any one of (9) to (12), configured to hold a gripped state.
(14) The clamping device according to any one of (1) to (13), further comprising an elastic ring interposed between the gripping member and the holding member.
(15) The elastic ring can be attached to an end face of the holding member in the axial direction on the side of the holding member, the holding member has an axially extending groove in its inner peripheral surface, and the elastic ring is , The clamping device according to (15), which has a leg portion that can be inserted into the groove portion of the inner peripheral surface of the gripping member.

ADVANTAGE OF THE INVENTION According to this invention, the clamp apparatus which can prevent the fall of the clamping force after clamping can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the whole structure of the clamp apparatus in 1st Embodiment. It is a perspective view showing a gripping member and a holding member of the clamp device. It is the figure which looked at the grasping member from the upper surface of the axial direction. It is the figure which looked at the holding member from the lower surface of the axial direction. FIG. 11 is an explanatory top view in the axial direction showing a non-interfering position between the first ridge of the gripping member and the second ridge of the holding member; FIG. 2 is an explanatory diagram showing the configuration of a hollow fiber membrane module in which a clamping device is used; FIG. 4 is an explanatory view showing the clamping device in a state where the opening/closing portion of the gripping member is opened; FIG. 4 is an explanatory diagram showing the clamping device in a state where the opening/closing portion of the gripping member is closed; It is explanatory drawing which shows the clamp apparatus of the state which fitted the holding member in the holding member. It is explanatory drawing which shows the clamp apparatus in the state which rotated the holding member and fixed the holding member. FIG. 4 is a cross-sectional view of the clamp device in a state where the first ridge and the second ridge are screwed together; 1 is a perspective view of a clamping device with an elastic ring; FIG. FIG. 4 is a cross-sectional view of the clamp device showing a state in which the holding member is fitted into the gripping member with the elastic ring interposed therebetween; It is a perspective view which shows the whole structure of the clamp apparatus in 2nd Embodiment. FIG. 4 is a perspective view showing parts of the clamping device; FIG. 10 is a perspective view showing the gripping member with the opening/closing part opened; It is the figure which looked at the grasping member from the upper surface of the axial direction. It is the figure which looked at the holding member, the lock member, and the control member from the lower surface of the axial direction. It is a perspective view of a holding member. It is a longitudinal cross-sectional view of a holding member. It is a perspective view of a lock member and a regulation member. It is explanatory drawing which shows the fitting structure of a holding member, a holding member, a locking member, and a control member. FIG. 4 is a vertical cross-sectional view of the clamping device with the holding member attached to the gripping member; FIG. 4 is an explanatory diagram showing a structure for attaching an elastic ring to a gripping member; FIG. 10 is an explanatory view showing the clamping device when attaching the gripping member to the object to be clamped; It is explanatory drawing which shows the clamp apparatus of the state which fitted the holding member in the holding member. It is explanatory drawing which shows the clamp apparatus of the state which fixed the holding member to the holding member.

Preferred embodiments of the present invention will be described below with reference to the drawings. The same reference numerals are given to the same elements, and overlapping explanations are omitted. In addition, unless otherwise specified, positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to the illustrated ratios. Moreover, the following embodiments are examples for explaining the present invention, and the present invention is not limited to these embodiments.

<First Embodiment>
FIG. 1 is a perspective view showing an example of a clamp device 1 according to this embodiment. FIG. 2 is a perspective view showing parts of the clamping device 1. FIG. The clamping device 1 includes, for example, a gripping member 10 that grips an object to be clamped, a holding member 11 that holds the gripped state of the gripping member 10 , and a fixing mechanism 12 that fixes the gripping member 10 and the holding member 11 . The vertical and horizontal directions of the clamp device 1 in the present embodiment are based on the orientation of the clamp device 1 shown in FIG.

As shown in FIGS. 2 and 3, the gripping member 10 has a ring shape as a whole, and has a plurality of, for example, two opening/closing sections 20 and 21, which are arc-shaped and are rotatably connected to each other except for one location. . One ends of the first opening/closing portion 20 and the second opening/closing portion 21 are rotatably connected to each other by a rotating shaft 30, and the other ends are not connected to each other and are not connected to each other. It is part A. The gripping member 10 can open and close the opening/closing portions 20 and 21 from one non-connecting portion A to grip the object to be clamped from the outside. The gripping member 10 is molded from resin, for example.

As shown in FIG. 2, the gripping member 10 is formed in a substantially cylindrical shape, and is coaxial with, for example, an annular base portion 40 and the base portion 40, and extends from the base portion 40 in one direction in the axial direction X (upward in FIG. 2). It has an extending cylindrical bolt portion 41 . A plurality of first protrusions 50 are intermittently formed along the circumferential direction R on the annular outer peripheral surface 41 a of the bolt portion 41 . Each first ridge portion 50 is slightly inclined with respect to the circumferential direction R in a vertical plane perpendicular to the axial direction X, and has a bolt function of a screw mechanism. Each first ridge portion 50 is inclined so that the left side is lower when viewed from the side. As shown in FIG. 3 , the first ridges 50 are formed in an arc shape when viewed from above in the axial direction X, and are provided at regular intervals in the circumferential direction R at regular intervals. For example, the first ridges 50 are formed, for example, eight at intervals of 45° over the entire circumference. Each first protrusion 50 has a constant length in the circumferential direction R (maximum length in the circumferential direction) L1. A gap having a constant width (minimum width in the circumferential direction) D1 is formed between the first ridges 50 adjacent to each other in the circumferential direction R. As shown in FIG.

As shown in FIG. 2, the first ridges 50 are formed in a plurality, for example, two rows in the axial direction X of the bolt portion 41, for example. The two rows of first protrusions 50 arranged in the axial direction X are formed so as to overlap at the same position when viewed from the axial direction X. As shown in FIG.

As shown in FIG. 2, the holding member 11 is formed in a substantially cylindrical shape and has openings 60 and 61 on the upper and lower surfaces, respectively. The opening 60 on the top surface is smaller than the opening 61 on the bottom surface. The holding member 11 is molded from resin, for example. A plurality of second protrusions 70 are intermittently formed along the circumferential direction R on the annular inner peripheral surface of the holding member 11 . Each second ridge portion 70 is slightly inclined with respect to the circumferential direction R in a vertical plane perpendicular to the axial direction X, and has a nut function of a screw mechanism. Each second ridge portion 70 is inclined so that the right side is lower when viewed from the central axis side of the holding member 11 . The first ridge portion 50 and the second ridge portion 70 constitute a screw mechanism and can be fitted and screwed together.

As shown in FIG. 4 , the second ridges 70 are formed in an arc shape when viewed from below in the axial direction X, and are provided at regular intervals in the circumferential direction R at equal intervals. For example, the second ridges 70 are, like the first ridges 50, formed along the entire circumference at eight, ie, 45° intervals. Between the second ridges 70 in the circumferential direction R, for example, a gap having the same constant width (minimum width in the circumferential direction) D2 as that of the first ridges 50 is formed. The second ridge portion 70 has a constant length in the circumferential direction R (maximum length in the circumferential direction) L2. The width D1 of the gap between the first ridges 50 is greater than the length L2 of the second ridges 70, and the width D2 between the second ridges 70 is the first width. It is longer than the length L1 of the protrusion 50 .

As shown in FIG. 2, the second ridges 70 are formed, for example, in the axial direction X of the bolt portion 41 in a plurality of, for example, three layers. The triple second protrusions 70 arranged in the axial direction X are formed so as to overlap at the same position when viewed from the axial direction X. As shown in FIG.

With such a configuration, for example, as shown in FIG. 5, the first ridge portion 50 and the second ridge portion 70 can be arranged at non-interfering positions in the circumferential direction R when viewed from the axial direction X so as not to interfere with each other.

The fixing mechanism 12 is configured so that the holding member 11 and the gripping member 10 are fixed to each other by rotating the holding member 11 from the non-interfering position by 60° or less and 5° or more, preferably 45° or less and 10° or more. It is configured. As shown in FIG. 2 , the fixing mechanism 12 has a plurality of projections 90 provided on the outer peripheral surface of the holding member 11 and locking portions 100 provided on the outer peripheral surface of the gripping member 10 .

The projections 90 are formed at equal intervals along the circumferential direction R at the lowest portion of the outer peripheral surface of the holding member 11 . The protrusions 90 have a rectangular parallelepiped shape protruding radially outward from the holding member 11, and are provided in the same number as the second protrusions 70, for example, as shown in FIG. The protrusion 90 is provided at a position slightly displaced in the circumferential direction R from the second protrusion 70 when viewed from the axial direction X. As shown in FIG. For example, when the angle between a line passing through the center of the holding member 11 and the center of the protrusion 90 and a line passing through the center of the holding member 11 and the center of the second protrusion 70 as viewed from the axial direction X is α, The protrusion 90 is provided at a position shifted by an angle α (about 5° to 15°) rearward in the screw tightening direction R1.

As shown in FIG. 2, the locking portion 100 is formed in a substantially square plate shape and has a groove 101 that opens toward the right side (rear side in the screw tightening direction R1) when viewed from the side. The locking portions 100 are provided at two locations on the base portion 40 of the gripping member 10, as shown in FIG. The locking portions 100 are provided at positions facing each other in the circumferential direction R. As shown in FIG. With such a configuration, when the holding member 11 is rotated by about 45° with respect to the gripping member 10 in the screw tightening direction R1, two of the plurality of protrusions 90 enter the grooves 101 of the locking portion 100 and are locked.

Next, a usage example of the clamp device 1 configured as described above will be described. In the present embodiment, an example of use of the clamping device 1 when sealing the liquid passing portion of the hollow fiber membrane module 150 shown in FIG. 6, for example, will be described.

For example, the hollow fiber membrane module 150 has a cylindrical module body 152 in which the hollow fiber membranes 151 are accommodated in the longitudinal direction, and headers 153 that cover both ends of the module body 152 in the longitudinal direction. Each header 153 is provided with a primary liquid passing portion 154 communicating with the primary side of the hollow fiber membranes 151 . Two secondary liquid passages 155 communicating with the secondary side of the hollow fiber membrane 151 are formed on the outer peripheral side surface of the module main body 152 .

Both ends of the hollow fiber membrane 151 are fixed to the inner wall surface of the module main body 152 with a potting agent 160 . The potting agent 160 creates, inside the module body 152, an outer peripheral space C1 located on the outer periphery of the hollow fiber membranes 151 and an end space C2 at both ends of the hollow fiber membranes 151 through which the open ends of the hollow fiber membranes 151 communicate. formed. The outer space C<b>1 of the hollow fiber membrane 151 is communicated with the secondary liquid passage 155 , and the end space C<b>2 of the hollow fiber membrane 151 is communicated with the primary liquid passage 154 .

The primary liquid-permeable part 154 and the secondary liquid-permeable part 155 are formed in a tubular shape, and the distal end thereof is a flange-shaped ferrule part having a large diameter.

For example, during sterilization before shipment, the primary liquid passage part 154 and the secondary liquid passage part 155 are closed by the cap 170, and the primary liquid passage part 154 and the cap 170, and the secondary liquid passage part 155 and the cap 170 are clamped. 1 is gripped and fixed.

When sealing the liquid passing part 155 (154) of the hollow fiber membrane module 150, first, as shown in FIG. In this state, the grasping member 10 is arranged around the liquid passing portion 155 and the cap 170, which are objects to be clamped. Next, as shown in FIG. 8, the opening/closing portions 20 and 21 of the gripping member 10 are closed, and the liquid passing portion 155 and the cap 170 are gripped. Next, the holding member 11 is fitted into the gripping member 10 as shown in FIG. At this time, as shown in FIG. 5, the first ridge portion 50 and the second ridge portion 70 are arranged at a non-interfering position where they do not interfere with each other in the circumferential direction R when viewed from the axial direction X. , the holding member 11 is fitted to the back (lower portion) of the gripping member 10 .

Next, as shown in FIG. 10, the holding member 11 is rotated about 45 degrees in the tightening direction R1. As a result, as shown in FIG. 11, the first ridge portion 50 and the second ridge portion 70 are screwed together and tightened together. Then, as shown in FIG. 10, the protrusion 90 of the holding member 11 enters the groove 101 of the engaging portion 100 of the gripping member 10, and the holding member 11 and the gripping member 10 are fixed to each other. Further, by rotating the holding member 11 in a direction opposite to the tightening direction, the protrusion 90 of the holding member 11 is disengaged from the locking portion 100 of the gripping member 10, and the fixing of the holding member 11 and the gripping member 10 is released.

According to this embodiment, the clamping device 1 has a gripping member 10, a holding member 11, and a fixing mechanism 12, and the gripping member 10 has a plurality of first ridges 50 on its annular outer peripheral surface. It has a bolt structure intermittently formed along the direction R, and the holding member 11 is a nut in which a plurality of second ridges 70 are formed intermittently along the circumferential direction R on the annular inner peripheral surface. The first ridge portion 50 and the second ridge portion 70 are formed so as to be arranged at non-interfering positions where they do not interfere with each other in the circumferential direction R when viewed from the axial direction X, and the holding member 11 is gripped. When the member 10 is fitted in the axial direction X at a non-interfering position and rotated in the circumferential direction R from that state, the first ridge portion 50 and the second ridge portion 70 are screwed together, and the holding member 11 holds the holding state of the holding member 10 , and the holding member 11 and the holding member 10 are fixed to each other by the fixing mechanism 12 . As a result, it is possible to prevent the clamping force from decreasing after the clamping device 1 is clamped. As a result, even if the hollow fiber membrane module 150 is sterilized, for example, the clamping force of the clamping device 1 is not weakened, and the clamping device 1 can be prevented from coming off during subsequent transportation. In addition, after sterilization, there is no need to retighten the screw of the clamp from above the sterilization bag, which improves work efficiency and sanitation.

The fixing mechanism 12 is configured such that the holding member 11 and the gripping member 10 are fixed to each other by rotating the holding member 11 from the non-interfering position by 60° or less in the circumferential direction R. Work can be done easily and quickly.

The first ridges 50 and the second ridges 70 have the same number in the circumferential direction R, and are provided at equal intervals in the circumferential direction R at regular intervals. As a result, the non-interfering position of the first ridge portion 50 and the second ridge portion 70 can be easily formed, and the operator can perform fitting without hesitation, thereby improving working efficiency.

The width D1 of the gap between the first protrusions 50 is greater than the length L2 of the second protrusion 70 in the circumferential direction R, and the width D2 of the gap between the second protrusions 70 is greater than the width D1 of the gap between the second protrusions 70. Since it is larger than the length L1 in the circumferential direction R of one ridge portion 50, the non-interfering position of the first ridge portion 50 and the second ridge portion 70 can be appropriately formed, and the operator can It can be fitted without hesitation, and work efficiency is improved.

Since a plurality of the first ridges 50 and the second ridges 70 are formed in the axial direction X, the first ridges 50 and the second ridges 70 are screwed into a small projection shape. , and the clamping device can be miniaturized.

The fixing mechanism 12 includes a plurality of protrusions 90 provided on the outer peripheral surface of the holding member 11 along the circumferential direction R, and a locking mechanism that is provided on the gripping member 10 so that the protrusions 90 are engaged and locked by rotation in the circumferential direction R. Since the holding member 11 and the gripping member 10 are provided with the portion 100, it is possible to fix the holding member 11 and the gripping member 10 so as to prevent a reduction in tightening force with a simple configuration and a simple operation.

The protrusion 90 is provided at a position corresponding to the second protrusion 70 along the circumferential direction R of the outer peripheral surface of the holding member 11 . As a result, the first protrusion 50 and the second protrusion 70 can be fixed near the position where they are screwed together. It can be done without hesitation, and can prevent a decrease in tightening force.

Since the locking portions 100 are provided at least at two opposing locations in the circumferential direction R of the gripping member 10, the holding member 11 and the gripping member 10 can be fixed evenly and reliably, and the tightening force can be reduced. A decrease can be prevented.

In the above embodiment, the clamping device 1 may further include an elastic ring 180 interposed between the gripping member 10 and the holding member 11 as shown in FIG. In such a case, the elastic ring 180 is configured to be separable into, for example, two arcuate portions. As shown in FIG. 13, for example, when clamping the liquid-passing part 155 (154) of the hollow fiber membrane module 150, it is interposed between the upper end of the bolt part 41 of the gripping member 10 and the ceiling surface 11b of the holding member 11. . By doing so, it is possible to prevent the grasping member 10 and the holding member 11 from being damaged due to, for example, excessive tightening.

<Second Embodiment>
FIG. 14 is a perspective view showing an example of the clamp device 200 according to this embodiment. FIG. 15 is a perspective view showing parts of the clamping device 200. FIG. The clamping device 200 includes, for example, a gripping member 210 that grips an object to be clamped, a holding member 211 that holds the gripping state of the gripping member 210, a fixing mechanism 212 that fixes the gripping member 210 and the holding member 211 to each other, and an elastic ring 213. It has Note that the up, down, left, and right directions of the clamp device 200 in this embodiment are based on the orientation of the clamp device 200 shown in FIG. 15 .

As shown in FIGS. 15 and 16, the gripping member 210 has a ring shape as a whole, and has a plurality of, for example, two opening/closing portions 220 and 221, which are arc-shaped and are rotatably connected to each other except for one location. . One ends of the first opening/closing portion 220 and the second opening/closing portion 221 are rotatably connected to each other by a rotating shaft 230, and the other ends are not connected to each other and are not connected to each other. It is part A. The gripping member 210 can open and close the opening/closing portions 220 and 221 from one unconnected portion A to grip the object to be clamped from the outside. The gripping member 210 is molded from resin, for example. As shown in FIG. 16, a protrusion 231 and a recess 232 are provided on the end surfaces of the opening/closing sections 220 and 221 that contact each other.

As shown in FIG. 15, the gripping member 210 is formed in a substantially cylindrical shape, and is coaxial with, for example, an annular base portion 240, and extends from the base portion 240 in one direction of the axial direction X (upward in FIG. 15). It has a cylindrical bolt portion 241 . A plurality of first ridges 250 are intermittently formed along the circumferential direction R on the annular outer peripheral surface 241 a of the bolt portion 241 . Each first protrusion 250 is slightly inclined with respect to the circumferential direction R in a vertical plane perpendicular to the axial direction X in a side view, and has a bolt function of a screw mechanism. As shown in FIG. 17, the first ridges 250 are formed in an arc shape when viewed from above in the axial direction X, and are provided at equal intervals in the circumferential direction R at regular intervals. For example, two first protrusions 250 are formed. For example, each first protrusion 250 has a constant length (maximum length in the circumferential direction) L3 in the circumferential direction R, for example, a length with an internal angle of about 90°. A gap having a constant width (minimum width in the circumferential direction) D3 is formed between the first ridges 250 adjacent to each other in the circumferential direction R. As shown in FIG.

As shown in FIG. 15, the first protrusions 250 are formed in a plurality, for example, two rows in the axial direction X of the bolt portion 241, for example. The two rows of first ridges 250 aligned in the axial direction X are formed so as to overlap at the same position when viewed from the axial direction X. As shown in FIG.

As shown in FIGS. 15 and 18, the holding member 211 is provided inside the locking member 300 and the restricting member 301, which will be described later. As shown in FIG. 19, the holding member 211 is formed in a substantially cylindrical shape. The holding member 211 is made of resin, for example. As shown in FIG. 20, the holding member 211 has openings 260 and 261 at the top and bottom, respectively. A reduced-diameter portion 262 is provided on the upper portion of the inner peripheral surface 211a of the holding member 211 so as to protrude inward and extend along the circumferential direction R. As shown in FIG. A plurality of second ridges 270 are intermittently formed along the circumferential direction R on the inner peripheral surface 211 a of the holding member 211 . Each second ridge portion 270 is slightly inclined with respect to the circumferential direction R in a vertical plane perpendicular to the axial direction X, and has a nut function of a screw mechanism. The first ridge portion 250 and the second ridge portion 270 constitute a screw mechanism and can be fitted and screwed together.

As shown in FIG. 18, the second ridges 270 are formed in an arcuate shape centering on the central axis when viewed from below, and are provided at regular intervals in the circumferential direction. For example, the second ridges 270 are the same as the first ridges 250, for example, two are formed so as to face each other. A gap having a constant width (minimum width in the circumferential direction R) D4 is formed between the second ridges 270 in the circumferential direction R. As shown in FIG. The second ridge portion 270 has a constant length in the circumferential direction R (maximum length in the circumferential direction) L4. The width D3 of the gap between the first protrusions 250 is greater than the length L4 of the second protrusions 270, and the width D4 between the second protrusions 270 is the first width. It is longer than the length L3 of the protrusion 250 . With this configuration, the first ridge portion 50 and the second ridge portion 70 can be arranged at non-interfering positions in the circumferential direction R when viewed from the axial direction X so as not to interfere with each other.

As shown in FIG. 15, the second protrusions 270 are formed in a plurality of, for example, three rows in the axial direction X of the bolt portion 241, for example. The three rows of second ridges 270 aligned in the axial direction are formed so as to overlap at the same position when viewed from the axial direction X. As shown in FIG.

As shown in FIG. 19, the outer peripheral surface 211b of the holding member 211 is formed with grooves 263 extending in the axial direction X and arranged in the circumferential direction R, which are fitted with the protrusions 310 of the locking member 300 described later. ing. The groove portion 263 is formed, for example, over substantially the entire circumference of the outer peripheral surface 211b of the holding member 211 .

In the fixing mechanism 212, the holding member 11 and the gripping member 10 are fitted to each other by rotating the holding member 211 from the non-interfering position by 60° or less and 5° or more, preferably 45° or less and 10° or more in the circumferential direction R. is configured as

As shown in FIG. 15, the fixing mechanism 212 includes, for example, a locking member 300 that moves in the axial direction X with respect to the holding member 211 to fix and release the holding member 211 and the gripping member 210, and an axial direction X of the locking member 300. A restricting member 301 or the like is provided for restricting and releasing restrictions on movement. FIG. 21 shows a perspective view of the locking member 300 and the restricting member 301. As shown in FIG.

As shown in FIG. 15 , lock member 300 has a cylindrical shape and is provided so as to cover the outer peripheral surface of holding member 211 . An outer peripheral surface 300a of the lock member 300 is provided with unevenness at a pitch of 45° so that the user can easily hold it. As shown in FIG. 21, the inner peripheral surface 300b of the lock member 300 is formed with ridges 310 extending in the axial direction X and arranged in the circumferential direction R. As shown in FIG. The protruding portion 310 is formed over substantially the entire circumference of the inner peripheral surface 300b of the lock member 300. As shown in FIG. As shown in FIG. 22 , the ridges 310 are fitted into the grooves 263 on the outer peripheral surface of the holding member 211 . Thereby, the locking member 300 is fixed to the holding member 211 so as not to rotate in the circumferential direction R, and is movable in the axial direction X. As shown in FIG.

As shown in FIG. 15 , an annular plate-like annular portion 311 surrounding the bolt portion 241 is provided on the base portion 240 of the gripping member 210 . As shown in FIG. 22 , the annular portion 311 has the same outer diameter as the outer peripheral surface 211 b of the holding member 211 . Grooves 312 extending in the axial direction X and arranged in the circumferential direction R are formed on the outer peripheral surface of the annular portion 311 . When the holding member 211 is attached to the holding member 210, the groove 263 of the outer peripheral surface 211b of the holding member 211 and the groove 312 of the holding member 210 are arranged on a straight line in the axial direction X with each other. Accordingly, when the locking member 300 is moved in the axial direction X toward the gripping member 210 with respect to the holding member 211 , the protrusion 310 of the locking member 300 moves from the groove 263 of the holding member 211 to the groove 312 of the gripping member 210 . It can be moved and fitted into the groove 312 of the gripping member 210 to stop the rotation of the holding member 211 with respect to the gripping member 210 . Further, when the locking member 300 is moved in the axial direction X away from the gripping member 210 with respect to the holding member 211 , the protrusion 310 of the locking member 300 is disengaged from the groove 312 of the gripping member 210 , and the groove 263 of the holding member 211 is removed. , allowing rotation of the holding member 211 relative to the gripping member 210 .

As shown in FIGS. 15 and 21, the regulating member 301 is formed, for example, in a substantially annular shape and is attached to the locking member 300 . As shown in FIG. 21 , the restricting member 301 includes, for example, an annular portion 320 , a plurality of leg portions 321 extending from the annular portion 320 in one direction (downward) in the axial direction X, and an axial direction extending from the annular portion 320 . It extends in one direction of X (downward) and has a plurality of fixing legs 322 for fixing the restricting member 301 to the locking member 300 . The legs 321 are provided, for example, at two locations facing each other. An engaging portion 323 protruding outward in the radial direction E is provided on the outer surface in the radial direction E of the lower end portion of the leg portion 321 . A pressing portion 324 protruding outward is provided on the outer surface of the leg portion 321 . The pressing portion 324 is provided between the proximal end of the leg portion 321 on the annular portion 320 side and the locking portion 323 . The leg portion 321 bends inward and elastically deforms when the user presses the pressing portion 324 .

For example, the locking member 300 is provided with a groove 330, a hole 331, and a groove 332 for inserting the annular portion 320, the leg portion 321, and the fixing leg portion 322 of the restricting member 301, respectively. The groove 330 is annularly formed along the circumferential direction R in the upper portion of the inner peripheral surface 300 b of the lock member 300 . The hole 331 is formed through the side wall of the locking member 300 in the axial direction X. As shown in FIG. The groove 332 is formed along the axial direction X in the inner peripheral surface 300b of the lock member 300. As shown in FIG. The regulating member 301 is inserted into and fixed to the lock member 300 from one side in the axial direction X, for example.

As shown in FIG. 15, the side wall of the locking member 300 is formed with an opening 333 for exposing the pressing portion 324 of the leg portion 321 . As shown in FIG. 22 , the leg portion 321 protrudes below the lock member 300 and the locking portion 323 is positioned below the lock member 300 .

As shown in FIGS. 15, 22 and 23, the gripping member 210 is provided with a locked portion 340 to which the locking portion 323 is locked. The locked portion 340 includes, for example, a groove portion 350 provided in the surface of the base portion 240 in an arc shape with the center of the gripping member 210 as the center of the arc, and protruding radially inward from the upper portion of the outer surface of the groove portion 350. It is composed of a projected streak portion 351 that has been formed. When the locking member 300 moves toward the gripping member 210 in the axial direction X (downward) with respect to the holding member 211 , the locking portion 323 enters the groove 350 of the locked portion 340 and engages with the protrusion 351 . Get caught. As a result, movement of the lock member 300 relative to the holding member 211 in the axial direction X away from the gripping member 210 (upward direction) is restricted.

Further, when the user presses the pressing portion 324 of the regulation member 301 exposed in the opening 333 of the locking member 300, the locking portion 323 of the leg portion 321 is elastically deformed inward, and the locking portion 323 becomes the locked portion. 340 can be removed. As a result, the restriction on the movement of the lock member 300 in the direction away from the grip member 210 (upward direction) can be released.

As shown in FIG. 15, the elastic ring 213 is interposed between the gripping member 210 and the holding member 211, and can be attached to the tip surface 241b of the bolt portion 241 of the gripping member 210, for example. The elastic ring 213 is formed in an annular shape and configured to be separable into, for example, two arcuate portions. For example, when the holding member 211 is attached to the holding member 210 as shown in FIG. As shown in FIG. 24, the elastic ring 213 has a plurality of legs 370 extending in one direction (downward) in the axial direction X, for example. The leg portion 370 can be inserted into a groove portion 371 formed in the axial direction X in the inner peripheral surface of the bolt portion 241 of the gripping member 210 .

Next, a usage example of the clamp device 200 configured as described above will be described. For example, when sealing the liquid passing portion 155 (154) of the hollow fiber membrane module 150, first, the opening/closing portions 220 and 221 of the gripping member 210 of the clamp device 200 are opened wide from the non-connecting portion A as shown in FIG. , and in that state, the gripping member 210 is arranged around the liquid-conducting portion 155 and the cap 170, which are objects to be clamped. At this time, the elastic ring 213 is attached onto the tip surface 241b of the bolt portion 241 of the gripping member 210 . Next, as shown in FIG. 26 , the opening/closing portions 220 and 221 of the gripping member 210 are closed, the liquid passing portion 155 and the cap 170 are gripped, and the holding member 211 is inserted into the gripping member 210 . At this time, the first ridge portion 250 and the second ridge portion 270 are arranged in a non-interfering position where they do not interfere with each other in the circumferential direction R when viewed from the axial direction X, and in that state, the holding member 211 is moved to the gripping member. 210 to the back (lower part).

Next, the holding member 211 is rotated about 45 degrees in the tightening direction. As a result, the first ridge portion 250 and the second ridge portion 270 are screwed together and tightened together.

Next, as shown in FIG. 27, the locking member 300 is moved relative to the holding member 211 in the direction (downward) in the axial direction X toward the gripping member 210 . At this time, the projection 310 of the lock member 300 shown in FIG. 22 enters the groove 312 of the gripping member 210 from the groove 263 of the holding member 211, and the lock member 300 and the gripping member 210 are fitted. Thereby, the rotation of the holding member 211 with respect to the gripping member 210 is stopped, and the holding member 211 and the gripping member 210 are fixed to each other.

Further, at this time, the locking portion 323 of the leg portion 321 of the restricting member 301 enters the groove portion 350 of the gripping member 210 and is locked to the locked portion 340 . As a result, movement of the locking member 300 in the axial direction X in the direction away from the gripping member 210 (upward) is restricted.

Next, when the clamp device 200 is removed from the liquid passage portion 155, the pressing portion 324 of the leg portion 321 is pushed to elastically deform the locking portion 323 of the leg portion 321 inward. As a result, the restriction on movement of the lock member 300 in the axial direction X is released. In this state, the locking member 300 is moved in the axial direction X in the direction away from the gripping member 210 (upward). At this time, the protrusion 310 of the lock member 300 shown in FIG. As a result, the holding member 211 is allowed to rotate with respect to the gripping member 210, and the fixing of the holding member 211 and the gripping member 210 is released. Then, the holding member 211 is rotated with respect to the gripping member 210 and the holding member 211 is removed from the gripping member 210 .

According to this embodiment, the clamping device 200 has a gripping member 210, a holding member 211, and a fixing mechanism 212, and the gripping member 210 has a plurality of first ridges 250 on its annular outer peripheral surface 241a. The holding member 211 has a bolt structure intermittently formed along the circumferential direction R, and the holding member 211 has a plurality of second ridges 270 intermittently formed along the circumferential direction R on the annular inner peripheral surface 211a. The holding member 211 is fitted in the gripping member 210 in the axial direction X, and rotated in the circumferential direction R from this state, whereby the first ridge portion 250 and the second ridge portion 270 are connected to each other. They are screwed together, and the holding member 211 is configured to hold the gripping state of the gripping member 210 . The fixing mechanism 212 is fixed to the holding member 211 so as not to rotate in the circumferential direction R, and has a locking member 300 provided movably in the axial direction X. The locking member 300 is a gripping member in the axial direction X. The holding member 211 is fixed to the gripping member 210 by fitting into the gripping member 210 when the locking member 300 moves toward the gripping member 210 , and is disengaged from the gripping member 210 when the locking member 300 moves away from the gripping member 210 . The fixing of the holding member 211 to the gripping member 210 is released by pressing the holding member 211 . As a result, it is possible to prevent the clamping force from being lowered after the clamping device 200 is clamped. As a result, even if the hollow fiber membrane module 150 is sterilized, for example, the clamping force of the clamping device 200 is not weakened, and the clamping device 200 can be prevented from coming off during subsequent transportation.

The fixing mechanism 212 has grooves 312 extending in the axial direction X of the gripping member 210 and arranged side by side in the circumferential direction R of the gripping member 210 , and the locking member 300 fits into the grooves 312 . It has a ridge 310 , and when it moves in the axial direction X toward the gripping member 210 , the ridge 310 fits into the groove 312 of the gripping member 210 to stop the rotation of the holding member 211 with respect to the gripping member 210 . , the projection 310 is disengaged from the groove 312 of the gripping member 210 and the holding member 211 is allowed to rotate with respect to the gripping member 210 when moved away from the gripping member 210 . Thereby, the fixing and fixing of the holding member 210 and the holding member 211 by the fixing mechanism 212 can be preferably performed with a simple configuration.

The fixing mechanism 212 has a regulating member 301 that regulates and releases the movement of the locking member 300 in the direction away from the gripping member 210 . As a result, two operations are required to release the fixation of the gripping member 210 and the holding member 211 by the lock member 300, thereby preventing the gripping member 210 and the holding member 211 from being erroneously released. be able to.

The restricting member 301 is movable together with the locking member 300 in the axial direction X, and has a locking portion 323 that is elastically deformable in the radial direction E with respect to the locking member 300. The fixing mechanism 212 is a gripping member. 210 and has a locked portion 340 to which the locking portion 323 of the regulating member 301 is locked. When the engaging portion 323 of the regulating member 301 is engaged with the engaged portion 340 , the locking member 300 is prevented from moving in the axial direction X away from the gripping member 210 , and the engaging portion 323 of the restricting member 301 is engaged with the locking member 300 . is elastically deformed in the radial direction E to disengage from the locked portion 340 , allowing the lock member 300 to move away from the gripping member 210 in the axial direction X. As a result, the movement of the locking member 300 can be properly restricted and released with a simple configuration.

The first ridge portion 250 and the second ridge portion 270 are formed so as to be arranged at non-interfering positions that do not interfere with each other in the circumferential direction R when viewed from the axial direction X. When the member 210 is fitted in the axial direction X at a non-interfering position and rotated in the circumferential direction R from that state, the first ridge portion 250 and the second ridge portion 270 are screwed together, and the holding member 211 is rotated. are configured to hold the gripping state of the gripping member 210 . As a result, the amount of rotation of the holding member 211 during tightening can be reduced, so that the clamping operation by the clamping device 200 can be performed simply and quickly.

Since the clamping device 200 has the elastic ring 213 interposed between the gripping member 210 and the holding member 211, it is possible to prevent the gripping member 210 and the holding member 211 from being damaged due to excessive tightening.

Since the elastic ring 213 has legs 370 that can be inserted into the grooves 371 on the inner peripheral surface of the gripping member 210, the elastic ring 213 is less likely to come off from the gripping member 210 during operation. Workability can be improved.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to such examples. It is obvious that a person skilled in the art can conceive various modifications or modifications within the scope of the idea described in the claims, and these naturally belong to the technical scope of the present invention. understood as a thing.

For example, the configurations of the gripping members 10 and 210, the holding members 11 and 211, the fixing mechanisms 12 and 212, etc. in the above embodiments are not limited to this. Moreover, the object to be clamped that can be used by the clamping devices 1 and 200 is not limited to the liquid passing portion of the hollow fiber membrane module.

INDUSTRIAL APPLICABILITY The present invention is useful in providing a clamping device capable of preventing a decrease in clamping force after clamping.

REFERENCE SIGNS LIST 1 clamping device 10 gripping member 11 holding member 12 fixing mechanism 50 first ridge portion 70 second ridge portion 90 projection 100 locking portion

Claims (15)

It has a plurality of arcuate opening/closing sections which are circular in shape as a whole and are rotatably connected to each other except for one point, and the clamping object is clamped by opening/closing the opening/closing section from the unconnected portion at the one point. a grippable gripping member;
an annular holding member that is axially fitted into the holding member to hold the holding state of the holding member;
a fixing mechanism for fixing the gripping member and the holding member to each other;
The gripping member has a bolt structure in which a plurality of first ridges are intermittently formed on the annular outer peripheral surface along the circumferential direction,
The holding member has a nut structure in which a plurality of second ridges are intermittently formed on the annular inner peripheral surface along the circumferential direction,
The first ridge portion and the second ridge portion are formed so as to be arranged at non-interfering positions that do not interfere with each other in the circumferential direction when viewed from the axial direction,
The holding member is axially fitted into the gripping member at the non-interfering position, and rotated in the circumferential direction from that state, whereby the first and second ridges are screwed together. 1. A clamping device according to claim 1, wherein the holding member holds the gripping member in a gripping state, and the holding member and the gripping member are fixed to each other by the fixing mechanism. 2. The fixing mechanism according to claim 1, wherein the holding member and the gripping member are fixed to each other by rotating the holding member from the non-interfering position by 60° or less in the circumferential direction. clamping device. 3. The clamp according to claim 1 or 2, wherein the number of said first ridges and said second ridges are equal in number in the circumferential direction and are provided at regular intervals in the circumferential direction. Device. The width of the gap between the first ridges is greater than the length of the second ridge in the circumferential direction, and the width of the gap between the second ridges is equal to the width of the first ridge. 4. A clamping device according to claim 3, which is greater than the circumferential length of the portion. The clamping device according to any one of claims 1 to 4, wherein a plurality of said first ridges and said second ridges are each formed in the axial direction. The fixing mechanism includes a plurality of protrusions provided on the outer peripheral surface of the holding member along the circumferential direction, and an engagement member provided on the gripping member that engages and locks the protrusions when the holding member rotates in the circumferential direction. The clamping device according to any one of claims 1 to 5, comprising a stop portion. 7. The clamping device according to claim 6, wherein said protrusion is provided at a position corresponding to said second ridge portion along the circumferential direction of the outer peripheral surface of said holding member. The clamping device according to claim 6 or 7, wherein the engaging portions are provided at at least two locations facing each other in the circumferential direction of the gripping member. It has a plurality of arcuate opening/closing sections which are circular in shape as a whole and are rotatably connected to each other except for one point, and the clamping object is clamped by opening/closing the opening/closing section from the unconnected portion at the one point. a grippable gripping member;
an annular holding member that is axially fitted into the holding member to hold the holding state of the holding member;
a fixing mechanism for fixing the gripping member and the holding member to each other;
The gripping member has a bolt structure in which a plurality of first ridges are intermittently formed on the annular outer peripheral surface along the circumferential direction,
The holding member has a nut structure in which a plurality of second ridges are intermittently formed on the annular inner peripheral surface along the circumferential direction,
The gripping member and the holding member are fitted in the gripping member in the axial direction, and when the holding member is rotated in the circumferential direction from that state, the first ridge portion and the second ridge portion are formed. configured to be threaded together and configured such that the retaining member retains the gripping state of the gripping member;
The fixing mechanism has a locking member that is fixed to the holding member so as not to rotate in the circumferential direction and that is axially movably provided, and the locking member moves in a direction approaching the gripping member in the axial direction. When the locking member is moved away from the gripping member, the holding member is engaged with the gripping member and the holding member is fixed to the gripping member. A clamping device configured to unlock the holding member. The fixing mechanism has grooves extending in the axial direction of the gripping member and arranged side by side in the circumferential direction of the gripping member,
The lock member has a convex portion that can be fitted into the groove portion, and when the lock member is moved in an axial direction toward the gripping member, the convex portion fits into the groove portion of the gripping member and locks the gripping member. When the rotation of the holding member is stopped and the holding member is moved in a direction away from the holding member, the projection is disengaged from the groove of the holding member to allow rotation of the holding member with respect to the holding member. 10. A clamping device according to claim 9. 11. The clamping device according to claim 9, wherein said fixing mechanism further comprises a restricting member that restricts and releases restriction on movement of said locking member in a direction away from said gripping member. the restricting member is axially movable integrally with the locking member and has a locking portion that is radially elastically deformable with respect to the locking member;
The fixing mechanism is provided on the gripping member and has a locked portion to which the locking portion of the restricting member is locked. and the engaging portion of the restricting member is engaged with the engaged portion to stop the movement of the locking member in the axial direction away from the gripping member, and the engaging portion of the restricting member is engaged with the lock. (11) The lock member is configured to be elastically deformed in a radial direction of the member to disengage from the locked portion, thereby allowing the lock member to move away from the grip member in the axial direction. A clamping device as described in . The first ridge portion and the second ridge portion are formed so as to be arranged at non-interfering positions that do not interfere with each other in the circumferential direction when viewed from the axial direction,
The holding member is axially fitted into the gripping member at the non-interfering position, and rotated in the circumferential direction from that state, whereby the first and second ridges are screwed together. 13. The clamping device according to any one of claims 9 to 12, wherein said holding member is configured to hold the gripped state of said gripping member. The clamping device according to any one of claims 1 to 13, further comprising an elastic ring interposed between said gripping member and said holding member. The elastic ring can be attached to an end face of the holding member in the axial direction of the holding member,
The gripping member has an axially extending groove on its inner peripheral surface,
15. The clamping device according to claim 14, wherein the elastic ring has legs that can be inserted into the grooves on the inner peripheral surface of the gripping member.

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