JP2021060046A - Clamp device - Google Patents

Abstract

To provide a clamp device capable of preventing the degradation of clamp force after clamping.SOLUTION: A clamp device 1 is equipped with a gripping member 10, a holding member 11, and a fixing mechanism 12. The gripping member 10 has a bolt structure in which a plurality of first projection strip portions 50 are intermittently formed in a circumferential direction on an annular outer peripheral surface. The holding member 11 has a nut structure in which a plurality of second projection strip portions 70 are intermittently formed in a circumferential direction on an annular inner peripheral surface. The first projection strip portions 50 and the second projection strip portions 70 are formed so that they can be disposed at non-interference positions where they are not interfered with each other in the circumferential direction when viewed from an axial direction. The holding member 11 is fitted in the gripping member 10 in the axial direction at the non-interference position, and rotates in the circumferential direction from that state. Thereby, the first projection strip portions 50 and the second projection strip portions 70 are screwed with each other, the holding member 11 holds a gripping state of the gripping member 10, and the fixing mechanism 12 fixes the holding member 11 and the gripping member 10.SELECTED DRAWING: Figure 2

Description

The present invention relates to a clamp device.

The hollow fiber membrane module used for purifying blood products and liquids such as blood includes a plurality of liquid passing portions. The liquid passing portion generally includes a flange-shaped tip (ferrule portion) having a wide diameter. This type of hollow fiber membrane module is usually sterilized before shipment. At this time, the tip of the liquid passing portion is closed by a cap, and the tip of the liquid passing portion and the cap are gripped by a clamping device. It is sealed.

In the conventional clamp device, for example, there is a device in which two arc-shaped clamp portions are closed, a lever is lowered from one of the clamp portions to the other, and a screw provided on the lever is tightened to grip the lever. See Patent Document 1).

UK Pat. No. 2361753

However, in the clamp device as described above, the tightening force of the screw may decrease due to thermal expansion of the clamp portion or the like during the sterilization process performed at a high temperature. In this case, for example, if continuous vibration or a large impact is applied during transportation at the time of shipment, the clamp portion may come off from the object to be clamped. Therefore, after the sterilization process, it is necessary to re-tighten the screws of the clamp portion from the top of 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 diligent studies, the present inventors have obtained a gripping member, a holding member that is annularly fitted into the gripping member from the axial direction to hold the gripping state, and the gripping member and the holding member. We have found that the above problems 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) The whole is annular, and it has a plurality of arc-shaped opening / closing portions rotatably connected to each other except for one place, and the opening / closing part is opened / closed from the unconnected portion at the one place to clamp. A gripping member capable of gripping an object, a holding member that is annularly fitted into the gripping member from the axial direction to hold the gripping state of the gripping member, and 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 along the circumferential direction on the annular outer peripheral surface, and the holding member has an annular inner peripheral surface. The plurality of second ridges have a nut structure intermittently formed along the circumferential direction, and the first ridge and the second ridge are in the circumferential direction when viewed from the axial direction. The holding member is fitted into the gripping member in the axial direction at the non-interfering position, and is rotated in the circumferential direction from that state so that the holding member can be arranged at a non-interfering position that does not interfere with each other. A clamp device in which a ridge portion and the second ridge portion are screwed together, the holding member holds the gripping state of the gripping member, and the holding member and the gripping 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 rotation of the holding member in the circumferential direction of 60 ° or less from the non-interfering position (1). Clamping device according to.
(3) The first ridge portion and the second ridge portion are provided with the same number in the circumferential direction and at regular intervals in the circumferential direction, (1) or (2). ).
(4) The width of the gap between the first ridges is larger than the length of the second ridge in the circumferential direction, and the width of the gap between the second ridges is the first. The clamp device according to (3), which is larger than the circumferential length of the ridge portion of the above.
(5) The clamp device according to any one of (1) to (4), wherein a plurality of the first ridge portion and the second ridge portion are formed in the axial direction.
(6) The fixing mechanism is provided on a plurality of protrusions provided along the circumferential direction on the outer peripheral surface of the holding member, and the protrusions are inserted and locked by rotation of the holding member in the circumferential direction. The clamp device according to any one of (1) to (5), which has a locking portion to be locked.
(7) The clamp device according to (6), wherein the protrusion is provided at a position corresponding to the second ridge portion along the circumferential direction of the outer peripheral surface of the holding member.
(8) The clamp device according to (6) or (7), wherein the locking portions are provided at two positions facing each other in the circumferential direction of the gripping member.
(9) The whole is annular, and it has a plurality of arc-shaped opening / closing portions rotatably connected to each other except for one place, and the opening / closing part is opened / closed from the unconnected portion at the one place to clamp. A gripping member capable of gripping an object, a holding member that is annularly fitted into the gripping member from the axial direction to hold the gripping state of the gripping member, and 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 along the circumferential direction on the annular outer peripheral surface, and the holding member has an annular inner peripheral surface. The gripping member and the holding member have a nut structure in which a plurality of second ridges are intermittently formed along the circumferential direction, and the holding member is axially fitted into the gripping member. 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. The fixing mechanism has a lock member which is fixed to the holding member so as not to rotate in the circumferential direction and is provided so as to be movable in the axial direction, and the lock member moves in a direction approaching the gripping member in the axial direction. Sometimes the holding member is fixed to the gripping member by being fitted to the gripping member, and when the locking member moves away from the gripping member, the holding member is disengaged from the gripping member and held by the gripping member. A clamping device configured to release the member.
(10) The fixing mechanism has grooves extending in the axial direction of the grip member and arranged side by side in the circumferential direction of the grip member, and the lock member can be fitted into the groove. The convex portion has a convex portion, and when the convex portion moves in a direction approaching the grip member in the axial direction, the convex portion fits into the groove portion of the grip member to stop the rotation of the holding member with respect to the grip member, and the grip member. The clamp device according to (9), wherein the convex portion is disengaged from the groove portion of the grip member to allow rotation of the holding member with respect to the grip member when moving away from the grip member.
(11) The clamp device according to (9) or (10), wherein the fixing mechanism further includes a restricting member that regulates and deregulates the movement of the lock member in a direction away from the gripping member.
(12) The restricting member has a locking portion that can move integrally with the locking member in the axial direction and is elastically deformable in the radial direction with respect to the locking member, and the fixing mechanism holds the gripping member. The member is provided with a locked portion to which the locking portion of the regulating member is locked, and when the locking member moves in a direction approaching the gripping member in the axial direction, the locking member is locked. When the portion 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 to allow the locking member to move in a 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 displaceable 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 grip member. By being fitted in the axial direction at 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 the gripping member. The clamp device according to any one of (9) to (12), which is configured to hold a gripped state.
(14) The clamp 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 the end surface of the gripping member on the holding member side in the axial direction, and the gripping member has a groove portion extending in the axial direction on the inner peripheral surface thereof, and the elastic ring has a groove portion extending in the axial direction. The clamp device according to (15), wherein the gripping member has legs that can be freely inserted into the groove on the inner peripheral surface of the gripping member.

According to the present invention, it is possible to provide a clamping device capable of preventing a decrease in clamping force after clamping.

It is a perspective view which shows the whole structure of the clamp device in 1st Embodiment. It is a perspective view which shows the gripping member and the holding member of a clamp device. It is a figure which looked at the gripping member from the upper surface in the axial direction. It is a figure which looked at the holding member from the lower surface in the axial direction. It is explanatory drawing which showed the non-interference position of the 1st ridge part of the gripping member and the 2nd ridge part of a holding member, and was seen from the upper surface in the axial direction. It is explanatory drawing which shows the structure of the hollow fiber membrane module which uses a clamp device. It is explanatory drawing which shows the clamp device in the state which the opening and closing part of a gripping member are opened. It is explanatory drawing which shows the clamp device in the state which the opening and closing part of a gripping member are closed. It is explanatory drawing which shows the clamp device in the state which the holding member is fitted in the gripping member. It is explanatory drawing which shows the clamp device in the state which the holding member is rotated and the gripping member is fixed. It is sectional drawing of the clamp device in the state which the 1st ridge part and the 2nd ridge part are screwed together. It is a perspective view of the clamp device which has an elastic ring. It is sectional drawing of the clamp device which shows the state which the holding member was fitted in the gripping member with the elastic ring interposed therebetween. It is a perspective view which shows the whole structure of the clamp device in 2nd Embodiment. It is a perspective view which shows the component of a clamp device. It is a perspective view which shows the gripping member in the state which the opening and closing part is open. It is a figure which looked at the gripping member from the upper surface in the axial direction. It is a figure which looked at the holding member, the locking member and the regulation member from the lower surface in the axial direction. It is a perspective view of the holding member. It is a vertical 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 the gripping member, the holding member, the lock member and the regulation member. It is a vertical cross-sectional view of a clamp device in a state where a holding member is attached to a gripping member. It is explanatory drawing which shows the attachment structure of the elastic ring to the gripping member. It is explanatory drawing which shows the clamp device at the time of attaching a grip member to a clamp object. It is explanatory drawing which shows the clamp device in the state which the holding member is fitted in the gripping member. It is explanatory drawing which shows the clamp device in the state which fixed the holding member to a gripping member.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The same elements are designated by the same reference numerals, and duplicate description will be omitted. In addition, the positional relationship such as up, down, left, and right shall be based on the positional relationship shown in the drawings unless otherwise specified. Furthermore, the dimensional ratios in the drawings are not limited to the ratios shown. Further, the following embodiments are examples for explaining the present invention, and the present invention is not limited to this embodiment.

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

As shown in FIGS. 2 and 3, the gripping member 10 has an annular shape as a whole, and includes a plurality of arcuate parts, for example, two opening / closing portions 20, 21 which are rotatably connected to each other except for one place. .. One end of the first opening / closing part 20 and the second opening / closing part 21 are rotatably connected to each other by a rotation 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 unconnected portion A to grip the clamp object from the outside. The gripping member 10 is molded of, for example, resin.

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

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

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

As shown in FIG. 4, the second ridge portions 70 are formed in an arc shape in the bottom view in the axial direction X, and are provided at equal intervals in the circumferential direction R at regular intervals. For example, the second ridges 70 are formed in the same manner as the first ridges 50, for example, at intervals of eight, that is, 45 ° over the entire circumference. 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 the first ridge 50 is formed. The second ridge portion 70 has a constant length (maximum length in the circumferential direction) L2 in the circumferential direction R. The width D1 of the gap between the first ridges 50 is larger than the length L2 of the second ridge 70, and the width D2 between the second ridges 70 is the first. It is larger than the length L1 of the ridge portion 50.

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

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 that do not interfere with each other in the circumferential direction R when viewed from the axial direction X.

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

The protrusions 90 are formed at the lowermost portion of the outer peripheral surface of the holding member 11 at equal intervals along the circumferential direction R. The protrusions 90 have a rectangular parallelepiped shape that protrudes outward in the radial direction of 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 deviated from the second ridge portion 70 in the circumferential direction R when viewed from the axial direction X. For example, when the angle formed by the line passing through the center of the holding member 11 and the center of the protrusion 90 and the line passing through the center of the holding member 11 and the center of the second ridge 70 when viewed from the axial direction X is α. The protrusion 90 is provided at a position deviated by an angle α (about 5 ° to 15 °) on the rear side of the screw tightening direction R1.

As shown in FIG. 2, the locking portion 100 is formed in a substantially rectangular plate shape, and has a groove 101 that opens toward the right side (rear side of the screw tightening direction R1) when viewed from the side surface. As shown in FIG. 3, the locking portions 100 are provided at two locations of the base portion 40 of the gripping member 10. The locking portions 100 are provided at positions facing each other in the circumferential direction R. With this configuration, when the holding member 11 is rotated with respect to the gripping member 10 in the screw tightening direction R1 by about 45 °, two of the plurality of protrusions 90 enter the groove 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 this embodiment, for example, an example of using the clamp device 1 for sealing the liquid passing portion of the hollow fiber membrane module 150 shown in FIG. 6 will be described.

For example, the hollow fiber membrane module 150 has a cylindrical module main body 152 in which the hollow fiber membrane 151 is housed in the longitudinal direction, and a header 153 that covers both ends of the module main body 152 in the longitudinal direction. Each header 153 is provided with a primary liquid passing portion 154 leading to the primary side of the hollow fiber membrane 151. Two secondary liquid passing portions 155 leading to 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 by the potting agent 160. The potting agent 160 provides an outer peripheral space C1 located on the outer periphery of the hollow fiber membrane 151 and an end space C2 at both ends of the hollow fiber membrane 151 through which the open ends of the hollow fiber membrane 151 communicate with each other inside the module main body 152. It is formed. The secondary liquid passing portion 155 communicates with the outer peripheral space C1 of the hollow fiber membrane 151, and the primary liquid passing portion 154 communicates with the end space C2 of the hollow fiber membrane 151.

The primary liquid passing portion 154 and the secondary liquid passing portion 155 are formed in a tubular shape, and the tip thereof is a flange-shaped ferrule portion having a large diameter.

For example, at the time of 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. It is gripped and fixed by 1.

When sealing the liquid passing portion 155 (154) of the hollow fiber membrane module 150, first, as shown in FIG. 7, the opening / closing portions 20 and 21 of the gripping member 10 of the clamp device 1 are opened wide from the non-connecting portion A. In that state, the gripping member 10 is arranged around the liquid passing portion 155 and the cap 170, which are the 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, as shown in FIG. 9, the holding member 11 is fitted into the gripping member 10. At this time, as shown in FIG. 5, the first ridge portion 50 and the second ridge portion 70 are arranged at non-interfering positions that 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 11 is fitted to the back (lower part) of the gripping member 10.

Next, as shown in FIG. 10, the holding member 11 is rotated by about 45 ° 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 fastened to each other. Then, as shown in FIG. 10, the protrusion 90 of the holding member 11 enters the groove 101 of the locking 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 the 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 holding member 11 and the gripping member 10 are released from being fixed.

According to the present embodiment, the clamp 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 around the annular outer peripheral surface. The holding member 11 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 intermittently formed along the circumferential direction R on the annular inner peripheral surface. The first ridge portion 50 and the second ridge portion 70 have a structure and are formed so as to be displaceable at non-interfering positions that do not interfere with each other in the circumferential direction R when viewed from the axial direction X, and are gripped by the holding member 11. The first ridge portion 50 and the second ridge portion 70 are screwed together by being fitted into the member 10 in the axial direction X at a non-interfering position and rotating in the circumferential direction R from that state, and the holding member 11 Holds the gripping state of the gripping member 10, and the holding member 11 and the gripping member 10 are fixed to each other by the fixing mechanism 12. This makes it possible to prevent a decrease in the clamping force of the clamping device 1 after clamping. As a result, for example, even if the hollow fiber membrane module 150 is sterilized, the clamping force of the clamping device 1 is not weakened, and it is possible to prevent the clamping device 1 from coming off during subsequent transportation. Further, after the sterilization process, the work of re-tightening the screw of the clamp portion from the top of the sterilization bag is eliminated, the work efficiency is improved, and the hygiene aspect is also improved.

Since the fixing mechanism 12 is configured so that the holding member 11 and the gripping member 10 are fixed to each other by rotation of the holding member 11 in the circumferential direction R of 60 ° or less from a non-interfering position, the clamp is clamped by the clamp device 1. The work can be done easily and quickly.

The first ridge portion 50 and the second ridge portion 70 have the same number of circumferential directions R, and are provided at equal intervals in the circumferential direction R at regular intervals. As a result, the non-interfering positions of the first ridge portion 50 and the second ridge portion 70 can be easily formed, and the operator can fit without hesitation and the work efficiency is improved.

The width D1 of the gap between the first ridges 50 is larger than the length L2 of the circumferential direction R of the second ridge 70, and the width D2 of the gap between the second ridges 70 is the first. Since it is larger than the length L1 of the circumferential direction R of the ridge portion 50 of 1, the non-interference position between the first ridge portion 50 and the second ridge portion 70 can be appropriately formed, and the operator can appropriately form the non-interference position. It can be fitted without hesitation and work efficiency is improved.

Since a plurality of the first ridge portion 50 and the second ridge portion 70 are formed in the axial direction X, the first ridge portion 50 and the second ridge portion 70 are screwed into a small protrusion shape. The clamp device can be miniaturized.

The fixing mechanism 12 is provided on the outer peripheral surface of the holding member 11 with a plurality of protrusions 90 provided along the circumferential direction R, and is provided on the gripping member 10, and the protrusions 90 are inserted and locked by rotation in the circumferential direction R. Since the portion 100 is provided, fixing that can prevent a decrease in the tightening force of the holding member 11 and the gripping member 10 can be realized with a simple configuration and a simple operation.

The protrusion 90 is provided at a position corresponding to the second ridge portion 70 along the circumferential direction R of the outer peripheral surface of the holding member 11. As a result, the first ridge portion 50 and the second ridge portion 70 can be fixed near the screwing position, so that the operator cares about the positional relationship of the protrusions when fixing the holding member 11 and the gripping member 10. It can be performed reliably without hesitation, and a decrease in tightening force can be prevented.

Since the locking portions 100 are provided at least at two positions facing each other 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 increased. It is possible to prevent the decrease.

In the above embodiment, the clamp 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 arc-shaped portions. As shown in FIG. 13, for example, when the liquid passing portion 155 (154) of the hollow fiber membrane module 150 is clamped, it is interposed between the upper end of the bolt portion 41 of the gripping member 10 and the ceiling surface 11b of the holding member 11. .. By doing so, it is possible to prevent damage to the gripping member 10 and the holding member 11 due to overtightening, for example.

<Second embodiment>
FIG. 14 is a perspective view showing an example of the clamp device 200 according to the present embodiment. FIG. 15 is a perspective view showing the parts of the clamp device 200. The clamp 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. The top, bottom, left, and right of the clamp device 200 in the present embodiment are based on the posture of the clamp device 200 shown in FIG.

As shown in FIGS. 15 and 16, the gripping member 210 has an annular shape as a whole, and includes a plurality of arcuate parts, for example, two opening / closing portions 220 and 221 that are rotatably connected to each other except for one place. .. One end of the first opening / closing part 220 and the second opening / closing part 221 are rotatably connected to each other by a rotation 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 clamp object from the outside. The gripping member 210 is molded of, for example, resin. As shown in FIG. 16, convex portions 231 and concave portions 232 are provided on the end faces of the opening / closing portions 220 and 221 that come into contact with each other, and the convex portions 231 and the concave portions 232 fit into each other when the opening / closing portions 220 and 221 are closed.

As shown in FIG. 15, the gripping member 210 is formed in a substantially cylindrical shape, for example, is coaxial with the annular base 240 and the base 240, and extends from the base 240 in one direction of the axial direction X (upper 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 241a of the bolt portion 241. Each of the first ridges 250 is slightly inclined with respect to the circumferential direction R in the 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 ridge portions 250 are formed in an arc shape in a top view in the axial direction X, and are provided at equal intervals in the circumferential direction R at regular intervals. For example, two first ridges 250 are formed. For example, each of the first ridge portions 250 has a constant length (maximum length in the circumferential direction) L3 in the circumferential direction R, for example, an internal angle of about 90 °. A gap having a constant width (minimum width in the circumferential direction) D3 is formed between the first ridge portions 250 adjacent to each other in the circumferential direction R.

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

As shown in FIGS. 15 and 18, the holding member 211 is provided inside the locking member 300 and the regulating 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 formed of, for example, resin. As shown in FIG. 20, the holding member 211 is provided with openings 260 and 261 at the upper part and the lower part, respectively. An upper portion of the inner peripheral surface 211a of the holding member 211 is provided with a diameter-reduced portion 262 that projects inward and is provided on a ridge along the circumferential direction R. A plurality of second ridges 270 are intermittently formed on the inner peripheral surface 211a of the holding member 211 along the circumferential direction R. Each of the second ridges 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 form a screw mechanism and can be fitted and screwed together.

As shown in FIG. 18, the second ridge portions 270 are formed in an arc shape centered on the central axis in a bottom view, and are provided at equal intervals at regular intervals in the circumferential direction. For example, the second ridge portion 270 is formed in the same manner as the first ridge portion 250, for example, two 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 ridge portions 270 in the circumferential direction R. The second ridge portion 270 has a constant length (maximum length in the circumferential direction) L4 in the circumferential direction R. The width D3 of the gap between the first ridges 250 is larger than the length L4 of the second ridge 270, and the width D4 between the second ridges 270 is the first. It is larger than the length L3 of the ridge 250. With such a configuration, the first ridge portion 50 and the second ridge portion 70 can 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.

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

As shown in FIG. 19, on the outer peripheral surface 211b of the holding member 211, groove portions 263 extending in the axial direction X and arranged in the circumferential direction R are formed so as to be fitted with the convex portions 310 of the lock 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 rotation of the holding member 211 from a non-interfering position in the circumferential direction R of 60 ° or less and 5 ° or more, preferably 45 ° or less and 10 ° or more. It is configured as follows.

As shown in FIG. 15, the fixing mechanism 212 has, for example, a lock 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 lock member 300. It is equipped with a regulating member 301 or the like that regulates and deregulates movement. FIG. 21 shows a perspective view of the lock member 300 and the regulation member 301.

As shown in FIG. 15, the lock member 300 has a cylindrical shape and is provided so as to cover the outer peripheral surface of the holding member 211. The outer peripheral surface 300a of the lock member 300 is provided with irregularities having a pitch of 45 ° so that the user can easily hold the lock member 300. 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. The ridge portion 310 is formed over substantially the entire circumference of the inner peripheral surface 300b of the lock member 300. As shown in FIG. 22, the convex portion 310 is fitted in the groove portion 263 on the outer peripheral surface of the holding member 211. As a result, the lock 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. 15, an annular plate-shaped 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 211b 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 gripping member 210, the groove portion 263 of the outer peripheral surface 211b of the holding member 211 and the groove portion 312 of the gripping member 210 are arranged on a straight line in the axial direction X with each other. As a result, when the lock member 300 is moved with respect to the holding member 211 in the direction approaching the gripping member 210 in the axial direction X, the convex portion 310 of the lock member 300 moves from the groove portion 263 of the holding member 211 to the groove portion 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 lock member 300 is moved with respect to the holding member 211 in the direction away from the grip member 210 in the axial direction X, the convex portion 310 of the lock member 300 is disengaged from the groove portion 312 of the grip member 210, and the groove portion 263 of the holding member 211 is removed. It is possible to allow the holding member 211 to rotate with respect to the gripping member 210.

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

For example, the lock 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 regulation member 301, respectively. The groove 330 is formed in an annular shape along the circumferential direction R on the upper portion of the inner peripheral surface 300b of the lock member 300. The hole 331 is formed inside the side wall of the lock member 300 so as to penetrate in the axial direction X. The groove 332 is formed on the inner peripheral surface 300b of the lock member 300 along the axial direction X. The regulating member 301 is inserted and fixed to the lock member 300 from one side in the axial direction X, for example.

As shown in FIG. 15, an opening 333 for exposing the push portion 324 of the leg portion 321 is formed on the side wall of the lock member 300. As shown in FIG. 22, the leg portion 321 projects below the lock member 300, and the locking portion 323 is located 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 has, for example, a groove portion 350 provided on the surface of the base portion 240 in an arc shape centered on the center of the gripping member 210, and a groove portion 350 protruding inward in the radial direction from the upper portion of the outer surface of the groove portion 350. It is composed of a ridge portion 351. When the locking member 300 moves in the axial direction X closer to the gripping member 210 (downward) with respect to the holding member 211, the locking portion 323 enters the groove 350 of the locked portion 340 and enters the ridge portion 351. Get caught. As a result, the lock member 300 is restricted from moving in the direction away from the gripping member 210 in the axial direction X (upward direction) with respect to the holding member 211.

Further, when the user pushes the pushing portion 324 of the regulating member 301 exposed to 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 is locked. It can be removed from 340. As a result, the restriction on the movement of the lock member 300 in the direction away from the gripping 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, for example, the tip surface 241b of the bolt portion 241 of the gripping member 210. The elastic ring 213 is formed in an annular shape, and is separably configured into two portions having an arc shape, for example. As shown in FIG. 23, for example, when the holding member 211 is attached to the gripping member 210, it is interposed between the tip surface 241b of the bolt portion 241 of the gripping member 210 and the reduced diameter portion 262 of the holding member 211. As shown in FIG. 24, the elastic ring 213 has, for example, a plurality of legs 370 extending in one direction (downward) of the axial direction X. The leg portion 370 can be inserted into the groove portion 371 formed on the inner peripheral surface of the bolt portion 241 of the gripping member 210 in the axial direction X.

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, as shown in FIG. 25, the opening / closing portions 220 and 221 of the gripping member 210 of the clamp device 200 are widely opened from the unconnected portion A. In that state, the gripping member 210 is arranged around the liquid passing portion 155 and the cap 170, which are the objects to be clamped. At this time, the elastic ring 213 is attached on 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 at non-interfering positions that 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 gripped. Insert it all the way to the back (bottom) of 210.

Next, the holding member 211 is rotated by about 45 ° in the tightening direction. As a result, the first ridge portion 250 and the second ridge portion 270 are screwed together and fastened to each other.

Next, as shown in FIG. 27, the lock member 300 is moved with respect to the holding member 211 in a direction (downward) approaching the gripping member 210 in the axial direction X. At this time, the convex portion 310 of the lock member 300 shown in FIG. 22 enters the groove portion 312 of the gripping member 210 from the groove portion 263 of the holding member 211, and the lock member 300 and the gripping member 210 are fitted. As a result, 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 regulating member 301 enters the groove portion 350 of the gripping member 210 and is locked to the locked portion 340. As a result, the movement of the lock member 300 in the axial direction X away from the gripping member 210 (upward) is restricted.

Next, when removing the clamp device 200 from the liquid passing portion 155, the pushing 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 the movement of the lock member 300 in the axial direction X is released. In this state, the lock member 300 is moved in the direction away from the gripping member 210 in the axial direction X (upward direction). At this time, the convex portion 310 of the lock member 300 shown in FIG. 22 moves from the groove portion 312 of the gripping member 210 to the groove portion 263 of the holding member 211, and the lock member 300 is disengaged from the gripping member 210. As a result, the holding member 211 is allowed to rotate with respect to the gripping member 210, and the holding member 211 and the gripping member 210 are released from being fixed. 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 the present embodiment, the clamp 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 ridge portions 250 on the annular outer peripheral surface 241a. The holding member 211 has a bolt structure intermittently formed along the circumferential direction R, and a plurality of second ridges 270 are intermittently formed along the circumferential direction R on the annular inner peripheral surface 211a. The holding member 211 is fitted into the gripping member 210 in the axial direction X, and rotates in the circumferential direction R from that state, so that the first ridge portion 250 and the second ridge portion 270 are formed. The holding members 211 are screwed together to hold the gripping member 210 in a gripped state. The fixing mechanism 212 has a lock member 300 that is fixed to the holding member 211 so as not to rotate in the circumferential direction R and is movably provided in the axial direction X, and the lock member 300 is a gripping member in the axial direction X. When moving in the direction approaching 210, the holding member 211 is fitted to the gripping member 210 and fixed to the gripping member 210, and when the lock member 300 moves away from the gripping member 210, it comes off from the gripping member 210. The holding member 211 is released from being fixed to the grip member 210. This makes it possible to prevent a decrease in the clamping force of the clamping device 200 after clamping. As a result, for example, even if the hollow fiber membrane module 150 is sterilized, the clamping force of the clamping device 200 is not weakened, and it is possible to prevent the clamping device 200 from coming off during subsequent transportation.

The fixing mechanism 212 extends in the axial direction X of the gripping member 210 in the gripping member 210, and has groove portions 312 provided side by side in the circumferential direction R of the gripping member 210, and the lock member 300 fits into the groove portion 312. It has a ridge portion 310, and when it moves in a direction approaching the grip member 210 in the axial direction X, the ridge portion 310 fits into the groove portion 312 of the grip member 210 to stop the rotation of the holding member 211 with respect to the grip member 210. The ridge portion 310 is configured to disengage from the groove portion 312 of the gripping member 210 and allow the holding member 211 to rotate with respect to the gripping member 210 when moving away from the gripping member 210. As a result, the gripping member 210 and the holding member 211 can be preferably fixed and released by the fixing mechanism 212 with a simple configuration.

The fixing mechanism 212 has a regulating member 301 that regulates and releases the movement of the lock member 300 in the direction away from the gripping member 210. As a result, two operations are required to release the fixing of the gripping member 210 and the holding member 211 by the lock member 300, so that it is possible to prevent the gripping member 210 and the holding member 211 from being accidentally released from being fixed. be able to.

The regulating member 301 has a locking portion 323 that is integrally movable with the locking member 300 in the axial direction X and is elastically deformable in the radial direction E with respect to the locking member 300, and the fixing mechanism 212 is a gripping member. The restricting member 301 is provided on the 210 and has a locked portion 340 to which the locking portion 323 of the restricting member 301 is locked, and when the locking member 300 moves in a direction approaching the gripping member 210 in the axial direction X. The locking portion 323 of the locking member 323 is locked to the locked portion 340 to stop the movement of the locking member 300 in the direction away from the gripping member 210 in the axial direction X, and the locking portion 323 of the regulating member 301 is locked by the locking member 300. It is configured to allow the locking member 300 to move away from the gripping member 210 in the axial direction X by elastically deforming in the radial direction E and unlocking the locked portion 340. As a result, the movement of the lock member 300 can be restricted and the regulation can be preferably released with a simple configuration.

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

Since the clamp device 200 includes an elastic ring 213 interposed between the gripping member 210 and the holding member 211, it is possible to prevent damage to the gripping member 210 and the holding member 211 due to overtightening, for example.

Since the elastic ring 213 has a leg portion 370 that can be freely inserted into the groove portion 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 the work, and the clamping work using the clamp device 200 is performed. Workability can be improved.

Although 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 clear that a person skilled in the art can come up with various modifications or modifications within the scope of the ideas described in the claims, which naturally belong to the technical scope of the present invention. It is understood as a thing.

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

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

1 Clamping device 10 Gripping member 11 Holding member 12 Fixing mechanism 50 First ridge 70 Second ridge 90 Protrusion 100 Locking part

Claims (15)

The whole is annular, and it has a plurality of arc-shaped opening / closing parts that are rotatably connected to each other except for one place, and the opening / closing part is opened / closed from the unconnected part at the one place to clamp the object to be clamped. A gripping member that can be gripped and
A holding member that is annular and is fitted into the gripping member from the axial direction to hold the gripping state of the gripping member.
A fixing mechanism for fixing the gripping member and the holding member to each other is provided.
The gripping member has a bolt structure in which a plurality of first ridges are intermittently formed along the circumferential direction on an annular outer peripheral surface.
The holding member has a nut structure in which a plurality of second ridges are intermittently formed along the circumferential direction on the annular inner peripheral surface.
The first ridge portion and the second ridge portion are formed so as to be displaceable 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 fitted into the gripping member in the axial direction at the non-interfering position, and rotates in the circumferential direction from that state, so that the first ridge portion and the second ridge portion are screwed together. A clamp device in which the holding member holds the gripping state of the gripping member, and the holding member and the gripping member are fixed to each other by the fixing mechanism. The fixing mechanism according to claim 1, wherein the holding member and the gripping member are fixed to each other by rotation of the holding member in a circumferential direction of 60 ° or less from the non-interfering position. Clamping device. The clamp according to claim 1 or 2, wherein the first ridge portion and the second ridge portion have the same number in the circumferential direction and are provided at equal intervals at regular intervals in the circumferential direction. apparatus. The width of the gap between the first ridges is larger than the length of the second ridge in the circumferential direction, and the width of the gap between the second ridges is the width of the first ridge. The clamp device according to claim 3, which is larger than the circumferential length of the portion. The clamp device according to any one of claims 1 to 4, wherein a plurality of the first ridge portion and the second ridge portion are formed in the axial direction. The fixing mechanism is provided on a plurality of protrusions provided on the outer peripheral surface of the holding member along the circumferential direction, and is provided on the gripping member, and the protrusions are inserted and locked by rotation of the holding member in the circumferential direction. The clamp device according to any one of claims 1 to 5, which has a stop portion. The clamp device according to claim 6, wherein the protrusion is provided at a position corresponding to the second ridge portion along the circumferential direction of the outer peripheral surface of the holding member. The clamp device according to claim 6 or 7, wherein the locking portions are provided at at least two locations facing each other in the circumferential direction of the gripping member. The whole is annular, and it has a plurality of arc-shaped opening / closing parts that are rotatably connected to each other except for one place, and the opening / closing part is opened / closed from the unconnected part at the one place to clamp the object to be clamped. A gripping member that can be gripped and
A holding member that is annular and is fitted into the gripping member from the axial direction to hold the gripping state of the gripping member.
A fixing mechanism for fixing the gripping member and the holding member to each other is provided.
The gripping member has a bolt structure in which a plurality of first ridges are intermittently formed along the circumferential direction on an annular outer peripheral surface.
The holding member has a nut structure in which a plurality of second ridges are intermittently formed along the circumferential direction on the annular inner peripheral surface.
The gripping member and the holding member are formed so that the first ridge portion and the second ridge portion are formed by the holding member being fitted into the grip member in the axial direction and rotating in the circumferential direction from that state. The holding members are configured to be screwed together to hold the gripping state of the gripping member.
The fixing mechanism has a lock member that is fixed to the holding member so as not to rotate in the circumferential direction and is provided so as to be movable in the axial direction, and the lock member moves in a direction approaching the gripping member in the axial direction. When the lock member is fitted to the grip member and the holding member is fixed to the grip member, and the lock member moves away from the grip member, the lock member is disengaged from the grip member and is attached to the grip member. A clamping device configured to release the retaining 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 moves in a direction approaching the gripping member in the axial direction, the convex portion fits into the groove portion of the gripping member and is attached to the gripping member. It is configured so that when the holding member is stopped from rotating and moved away from the gripping member, the convex portion is separated from the groove portion of the gripping member to allow the holding member to rotate with respect to the gripping member. The clamp device according to claim 9. The clamp device according to claim 9 or 10, wherein the fixing mechanism further includes a restricting member that regulates and deregulates the movement of the lock member in a direction away from the gripping member. The restricting member has a locking portion that can move integrally with the locking member in the axial direction and is elastically deformable in the radial direction 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 when the locking member moves in a direction approaching the gripping member in the axial direction. When the locking portion of the restricting member is locked to the locked portion, the locking member is stopped from moving in the axial direction away from the gripping member, and the locking portion of the restricting member is locked. 11. Claim 11 is configured to allow the lock member to move in the axial direction away from the gripping member by elastically deforming in the radial direction of the member and releasing the lock with respect to the locked portion. The clamping device described in. The first ridge portion and the second ridge portion are formed so as to be displaceable 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 fitted into the gripping member in the axial direction at the non-interfering position, and rotates in the circumferential direction from that state, so that the first ridge portion and the second ridge portion are screwed together. The clamp device according to any one of claims 9 to 12, wherein the holding member is configured to hold the gripping state of the gripping member. The clamp device according to any one of claims 1 to 13, further comprising an elastic ring interposed between the gripping member and the holding member. The elastic ring can be attached to the end face of the gripping member on the holding member side in the axial direction.
The gripping member has a groove extending in the axial direction on its inner peripheral surface.
The clamp device according to claim 14, wherein the elastic ring has a leg portion that can be inserted into the groove portion on the inner peripheral surface of the gripping member.

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