JP2023044241A - Clamp device - Google Patents

Abstract

To provide a clamp device capable of suppressing unintended falling from a clamping object.SOLUTION: A shaft body 4 includes: a first end to which a movable member 5 is mounted; and a second end to which a first operation member 6 is mounted. The first operation member 6 is configured to enable an operation for rotating the shaft body 4 around the axis and an operation for axially moving the shaft body 4. A support mechanism engages with the shaft body 4 to support the shaft body 4. A disengagement mechanism acts on the support mechanism to release engagement between the support mechanism and the shaft body 4. A through hole 56 through which the shaft body 4 penetrates and a pair of arc-shaped holes 57, 58 formed around the through hole 56 are formed in the movable member 5. The disengagement mechanism includes: a pair of projections 76, 77 disposed to penetrate through the arc-shaped holes 57, 58, respectively; and a second operation member 70 enabling an operation for rotating the projections 76, 77 around the axis of the shaft body 4.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to clamping devices.

As a general clamping device, there is known one that has a fixed member and a movable member to which a shaft with a male screw is attached, and the shaft is screwed into a female screw portion of a support member. Japanese Patent Laying-Open No. 2015-42895 (Patent Document 1) discloses a first operating member that rotates a shaft around its axis, and a second operating member that releases an engagement state between a male threaded portion and a female threaded portion of the shaft. A clamping device is disclosed comprising:

JP 2015-42895 A

In the clamping device described in the above document, the engagement between the male threaded portion and the female threaded portion of the shaft can be released by a simple operation of rotating the second operating member. When the clamp device is removed from the object to be clamped, there is a possibility that the clamp device will drop due to gravity due to the disengagement of the male threaded portion and the female threaded portion at the moment the second operation member is rotated.

The present disclosure proposes a clamping device capable of suppressing an unintended drop from a clamped object.

According to the present disclosure, a fixed member and a movable member capable of reciprocating relative to the fixed member so as to approach and separate from the fixed member are provided, and an object to be fixed is sandwiched between the fixed member and the movable member. , a clamping device is proposed. The clamp device includes a shaft, a first operating member, a support mechanism, and a disengagement mechanism. The shaft has a first end to which the movable member is attached and a second end opposite the first end. The first operating member is attached to the second end of the shaft. The first operating member is configured to allow an operation to rotate the shaft around the axis and an operation to move the shaft in the axial direction. The support mechanism supports the shaft by meshing with the shaft. The disengagement mechanism acts on the support mechanism to disengage the support mechanism from the shaft. The movable member has a through hole through which the shaft passes and a pair of holes formed around the through hole. The disengagement mechanism has a pair of protrusions arranged to penetrate the holes, and a second operation member capable of rotating the protrusions around the axis of the shaft.

In the clamping device described above, the disengagement mechanism may be configured to be axially movable integrally with the shaft by operating the first operating member.

In the clamping device described above, the hole may be an arc-shaped hole extending in a circumferential direction around the axis of the shaft, and the projection may have an arc-shaped shape extending in the circumferential direction.

In the clamping device described above, the projection may be formed to have a circumferential dimension smaller than that of the arc-shaped hole.

In the clamping device described above, the convex portion may have a shape that allows surface contact with the object to be fixed.

In the clamping device described above, the projection may have a tip curved surface with a concave tip.

According to the clamping device according to the present disclosure, it is possible to suppress unintended dropping from the clamped object.

1 is a front view showing the configuration of an infusion pump device; FIG. 1 is a perspective view of a clamp device according to an embodiment; FIG. It is a perspective view showing a partial configuration of the clamp device from the first operation member to the movable member. FIG. 4 is a perspective view of a disengagement member; It is a perspective view of a movable member. It is a cross-sectional view showing the clamping device in a meshed state. It is a cross-sectional view showing the clamping device in a disengaged state. It is a front view which shows the clamp apparatus attached to the to-be-fixed object. FIG. 4 is a front view showing the clamping device being removed from the object to be fixed;

Embodiments will be described below with reference to the drawings. In the following description, the same reference numerals are given to the same parts. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

FIG. 1 is a front view showing the configuration of an infusion pump device 100. FIG. FIG. 2 is a perspective view of the clamp device 101 according to the embodiment. As shown in FIG. 1, the clamp device 101 is a device for fixing the infusion pump main body 102 to an object to be fixed (an object to be clamped) 200 . The infusion pump body 102 is, for example, a syringe pump. Fixed object 200 is, for example, a cylindrical pole. The infusion pump device 100 is, for example, a syringe pump unit comprising a clamp device 101 and a syringe pump fixed to the clamp device 101 .

As shown in FIGS. 1 and 2, the clamp device 101 mainly includes a fixed member 1, a mounting member 2, a shaft 4, a movable member 5, a first operating member 6, and a disengagement mechanism .

The fixed member 1 has a support portion 11 , a receiving portion 12 and a connecting portion 13 . The shaft 4 penetrates through the support portion 11 . A support mechanism 3 (not shown in FIGS. 1 and 2) is arranged inside the support portion 11 , and the shaft 4 is supported by the support mechanism 3 . The receiving portion 12 has a receiving surface 14 for receiving the fixed object 200 . The receiving surface 14 corresponds to the shape of the fixed object 200 . The receiving surface 14 has a cylindrical concave shape corresponding to the outer peripheral surface of the cylindrical pole.

The connecting portion 13 connects the support portion 11 and the receiving portion 12 . A first end of the connecting portion 13 is connected to the support portion 11 , and a second end of the connecting portion 13 is connected to the receiving portion 12 . The fixing member 1 is formed in a substantially angular C shape in a front view shown in FIG. The support portion 11 extends substantially perpendicularly to the connecting portion 13 . The receiving portion 12 extends substantially perpendicularly to the connecting portion 13 . The support portion 11 and the receiving portion 12 are arranged to face each other. Support portion 11, receiving portion 12 and connecting portion 13 may be formed as part of the same member as shown in FIG. 1, or may be formed as separate members.

The mounting member 2 is fixed to the fixed member 1 . The mounting member 2 is typically fixed to the connecting portion 13 . The infusion pump main body 102 is attached to the attachment member 2 of the clamp device 101 . The infusion pump device 100 is fixed to the clamp device 101 via the mounting member 2 . The mounting member 2 and at least part of the fixing member 1 may be formed as one member. The mounting member 2 may be formed as part of the infusion pump body 102 .

The shaft 4 extends along the connecting portion 13 of the fixed member 1 . A movable member 5 is attached to the tip of the shaft 4 . A first operating member 6 is attached to the proximal end of the shaft 4 . The shaft 4 has a first end to which the movable member 5 is attached and a second end on the opposite side of the first end in the axial direction, and a first operating member 6 is attached to the second end. The movable member 5 is arranged between the support portion 11 and the receiving portion 12 of the fixed member 1 . The movable member 5 is arranged so as to face the receiving surface 14 .

By rotating the first operating member 6, the shaft 4 can be rotated around the axis. By moving the first operating member 6 in the axial direction of the shaft 4 , it is possible to move the shaft 4 in the axial direction and move the movable member 5 relative to the fixed member 1 in the axial direction. Thereby, it is possible to change the distance between the movable member 5 and the receiving portion 12 . The movable member 5 is configured to be able to reciprocate relative to the receiving portion 12 so as to approach the receiving portion 12 of the fixed member 1 and to separate from the receiving portion 12 .

The engagement release mechanism 7 is configured to release the engagement state between the support mechanism 3 and the shaft 4 . An assembly including shaft 4 , movable member 5 , first operating member 6 and disengagement mechanism 7 is movable relative to fixed member 1 and mounting member 2 . More specifically, the assembly can integrally reciprocate relative to the fixed member 1 and the mounting member 2 in the axial direction of the shaft 4, and integrally move around the axis of the shaft 4. Relative rotation is possible.

FIG. 3 is a perspective view showing a partial configuration of the clamp device 101 from the first operating member 6 to the movable member 5. As shown in FIG. FIG. 3 illustrates the above-described assembly including shaft 4, movable member 5, first operating member 6 and disengagement mechanism 7. As shown in FIG. The engagement release mechanism 7 has a second operating member 70 and an engagement release member 71 . 4 is a perspective view of the disengagement member 71. FIG.

As shown in FIG. 4, the disengaging member 71 has an engaging portion 72 at one end. As shown in FIG. 3 , the engaging portion 72 is arranged inside the second operating member 70 , and the engaging portion 72 of the disengagement member 71 is engaged with the second operating member 70 . A portion of the outer peripheral surface of the engaging portion 72 is formed in a planar shape. The second operating member 70 and the disengagement member 71 are configured to be integrally rotatable about the axis of the shaft body 4 . The second operating member 70 is a component separate from the first operating member 6 and can be operated independently of the first operating member 6 . The shaft 4 extends through the second operating member 70 and the engaging portion 72 .

The disengagement member 71 has a pair of pressing portions 73 and 74 formed in a rod shape. The disengagement member 71 has a ring portion 75 and convex portions 76 and 77 at the other end. A pair of pressing portions 73 and 74 extend in the axial direction of the shaft 4 and connect the engaging portion 72 and the ring portion 75 . One ends of the pressing portions 73 and 74 are fixed to the engaging portion 72 , and the other ends of the pressing portions 73 and 74 are fixed to the ring portion 75 . As shown in FIG. 3 , the disengagement member 71 is arranged around the shaft 4 so that the shaft 4 is sandwiched between the pressing portions 73 and 74 . The pressing portions 73 and 74 are arranged parallel to the shaft 4 .

The ring portion 75 has a ring-shaped plate shape. Pressing portions 73 and 74 are fixed to one surface of the ring portion 75 . The shaft 4 extends through the ring portion 75 . The convex portions 76 and 77 protrude from the other surface of the ring portion 75 .

The protrusions 76 and 77 extend in the axial direction of the shaft 4 . The convex portions 76 and 77 are formed along the outer peripheral edge of the ring portion 75 and have an arcuate shape when viewed in the axial direction of the shaft body 4 . The projection 76 has a tip curved surface 78 at its tip. The projection 77 has a tip curved surface 79 at its tip. The tip curved surfaces 78 and 79 have concavely curved shapes. Typically, the tip curved surfaces 78, 79 have a shape forming part of a cylindrical surface. When the fixed object 200 is a columnar pole, the tip curved surfaces 78 and 79 have a shape corresponding to the outer peripheral surface of the pole. The tip curved surfaces 78 and 79 have a shape that allows surface contact with the outer cylindrical surface of the pole.

5 is a perspective view of the movable member 5. FIG. As shown in FIG. 5 , the movable member 5 has a plate-like base plate 51 and plate-like side plates 52 and 54 . The side plates 52 and 54 are fixed to the edges of the base plate 51 . The side plates 52 and 54 extend in the thickness direction of the base plate 51 . Side plates 52 and 54 protrude in the same direction with respect to base plate 51 . The base plate 51 has a substantially rectangular plate shape, and a side plate 52 is fixed to one of a pair of opposite sides of the rectangle, and a side plate 54 is fixed to the other.

The side plate 52 has a clamping surface 53 at its tip. The side plate 54 has a clamping surface 55 at its tip. The holding surfaces 53 and 55 have a concavely curved shape. The holding surfaces 53 and 55 correspond to the shape of the fixed object 200 . Typically, the clamping surfaces 53, 55 have a concave shape forming part of a cylindrical surface corresponding to the outer peripheral surface of the cylindrical pole. As shown in FIG. 1 , the clamping surfaces 53 and 55 are arranged to face the receiving surface 14 of the fixing member 1 . An object to be fixed 200 is arranged between the receiving surface 14 and the holding surfaces 53 and 55 , and the object to be fixed 200 can be held between the receiving surface 14 and the holding surfaces 53 and 55 .

A circular through-hole 56 is formed in the base plate 51 so as to penetrate the base plate 51 in the thickness direction. The base plate 51 is formed with curved arcuate holes 57 and 58 penetrating through the base plate 51 in the thickness direction. Arc-shaped holes 57 and 58 are formed around the through hole 56 . A through hole 56 is formed between the arcuate holes 57 and 58 and is sandwiched between the pair of arcuate holes 57 and 58 . The arc-shaped holes 57 and 58 are formed in an arc shape concentric with the through-hole 56 . The arcuate hole 57 has substantially the same curvature as the protrusion 76 of the disengagement member 71 . The arcuate hole 58 has substantially the same curvature as the protrusion 77 of the disengagement member 71 .

As shown in FIG. 3 , the shaft 4 and the movable member 5 are integrally assembled by passing the tip portion 43 of the shaft 4 through the through hole 56 . A rod-shaped locking member 48 is attached to the distal end portion 43 of the shaft body 4 passing through the through hole 56 so as to penetrate the distal end portion 43 in the radial direction of the shaft body 4 . As a result, the shaft 4 and the movable member 5 are reliably and integrally assembled. Arc-shaped holes 57 and 58 formed in the movable member 5 extend in a circumferential direction around the axis of the shaft body 4 .

The protrusion 76 of the disengagement member 71 extends in the circumferential direction around the axis of the shaft 4 and is arranged in the arcuate hole 57 . The protrusion 77 of the disengagement member 71 extends in the circumferential direction around the axis of the shaft 4 and is arranged in the arcuate hole 58 . The convex portion 76 is arranged so as to pass through the arc-shaped hole 57 . The convex portion 77 is arranged to pass through the arc-shaped hole 58 . The protrusions 76 and 77 protrude from the base plate 51 of the movable member 5 more than the tip 43 of the shaft 4 . As shown in FIG. 2 , the convex portions 76 and 77 are arranged to face the receiving surface 14 of the fixing member 1 . Also referring to FIG. 1 , convex portions 76 and 77 are arranged to face fixed object 200 .

The length of the convex portion 76 in the circumferential direction around the axis of the shaft 4 is set smaller than the length of the arc-shaped hole 57 . A gap is formed between the end of the protrusion 76 and the end of the arc-shaped hole 57 in the circumferential direction. The convex portion 76 is relatively movable in the circumferential direction with respect to the arc-shaped hole 57 . The length of the convex portion 77 in the circumferential direction around the axis of the shaft 4 is made smaller than the length of the arc-shaped hole 58 . A gap is formed between the protrusion 77 and the arcuate hole 58 in the circumferential direction. The convex portion 77 is relatively movable in the circumferential direction with respect to the arc-shaped hole 58 .

FIG. 6 is a cross-sectional view showing the clamping device 101 in an engaged state. As described above with reference to FIG. 1 , the support mechanism 3 is arranged inside the support portion 11 of the fixed member 1 . FIG. 6 shows a cross section along line VI-VI in FIG. The support mechanism 3 is arranged between the first end and the second end of the shaft 4 and supports the shaft 4 at a position between the first end and the second end. The support mechanism 3 includes a rectangular parallelepiped housing 30 . A hollow internal space surrounded by two pairs of inner wall surfaces facing each other is formed inside the housing 30 . The inner wall surface of the housing 30 has a first wall surface 301 and a second wall surface 302 facing each other in the longitudinal direction of the housing 30 .

Two female screw members 31 and 32 and two elastic members 33 and 34 are arranged in the internal space of the housing 30 to support the shaft 4 . The female screw members 31 and 32 are separate members, and are spaced apart from each other around the axis of the shaft body 4 . Female screw member 31 is supported by shaft portion 311 and is rotatable around shaft portion 311 . The female screw member 32 is supported by the shaft portion 331 and is rotatable about the shaft portion 331 .

A male threaded surface 41 is formed on the outer peripheral surface of the shaft 4 . The male thread surface 41 may be formed on the entire shaft 4 in the axial direction, or may be formed on a portion of the shaft 4 . The female screw member 31 has a female screw surface 314 facing the shaft body 4 side. The female threaded member 32 has a female threaded surface 334 facing the shaft body 4 side. As the female threaded member 31 rotates about the shaft portion 311 , the female threaded surface 314 approaches or separates from the male threaded surface 41 . As the female screw member 32 rotates about the shaft portion 331 , the female screw surface 334 approaches or separates from the male screw surface 41 .

The female screw member 31 is formed with a recessed portion 312 in which the surface opposite to the female threaded surface 314 , that is, the surface facing the first wall surface 301 is recessed. The elastic member 33 is accommodated in the recessed portion 312 . The elastic member 33 has a first end that contacts the first wall surface 301 and a second end that contacts the bottom surface of the recess 312 . The elastic member 33 biases the female screw member 31 in a direction to approach the shaft 4 . The female screw member 31 shown in FIG. 6 is arranged at a position closest to the shaft 4 by the elastic force of the elastic member 33 . At this time, the female screw surface 314 of the female screw member 31 meshes with the male screw surface 41 of the shaft 4 .

The female screw member 32 is formed with a recessed portion 332 in which the surface opposite to the female threaded surface 334 , that is, the surface facing the second wall surface 302 is recessed. The elastic member 34 is accommodated in the recessed portion 332 . The elastic member 34 has a first end that contacts the second wall surface 302 and a second end that contacts the bottom surface of the recess 332 . The elastic member 34 biases the female screw member 32 in a direction to approach the shaft 4 . The female screw member 32 shown in FIG. 6 is arranged at a position closest to the shaft 4 due to the elastic force of the elastic member 34 . At this time, the female screw surface 334 of the female screw member 32 meshes with the male screw surface 41 of the shaft 4 .

The elastic members 33 and 34 are supported by the housing 30 . The elastic member 33 is supported by the first wall surface 301 . The elastic member 34 is supported by the second wall surface 302 . Elastic members 33 and 34 may be any biasing members that exert a biasing force on female threaded members 31 and 32, respectively. The elastic members 33, 34 may be springs. The elastic members 33, 34 may be compression coil springs. The elastic members 33 and 34 are deformable according to the movements of the female screw members 31 and 32, respectively.

The support mechanism 3 has a plurality of female screw members 31 and 32 that mesh with the male screw surface 41 of the shaft 4 . The support mechanism 3 has a plurality of elastic members 33 and 34 that press the female thread members 31 and 32 toward the male thread surface 41 . The support mechanism 3 supports the shaft 4 by meshing with the shaft 4 .

The pressing portions 73 and 74 of the disengagement member 71 described above are arranged so as to penetrate the support mechanism 3 in the axial direction. In the meshing state shown in FIG. 6 in which the female threaded surfaces 314 and 334 mesh with the male threaded surface 41, the pressing portions 73 and 74 are positioned between the female threaded members 31 and 32 in the circumferential direction around the axis of the shaft body 4. are placed. In the engaged state, the disengagement member 71 is arranged such that the pressing portions 73 and 74 are out of contact with both the female screw members 31 and 32 .

FIG. 7 is a cross-sectional view showing the clamping device 101 in a disengaged state. FIG. 7 shows a cross section along line VII--VII in FIG. 1, similar to FIG. As described with reference to FIGS. 3 and 4, the second operating member 70 is engaged with the engaging portion 72 of the disengagement member 71, and the second operation member 70 and the disengagement member 71 are integrated into the shaft body. It is rotatable around four axes. The first operating member 6 is rotatable integrally with the shaft 4 , while the second operating member 70 is provided so as not to engage with the shaft 4 so as not to interfere with the operation of the shaft 4 . ing. Therefore, even if the second operating member 70 is rotated, the shaft 4 does not rotate because the shaft 4 is independent of the second operating member 70 .

The first operating member 6 and the second operating member 70 are arranged adjacent to each other in the axial direction of the shaft 4 . The first operating member 6 and the second operating member 70 are arranged so that the second operating member 70 can be operated by the hand holding the first operating member 6 . Thereby, the first operating member 6 and the second operating member 70 can be operated with one hand. The second operating member 70 is arranged closer to the supporting portion 11 of the fixed member 1 than the first operating member 6 is.

By rotating the second operating member 70 around the shaft 4 , force is applied to the engagement release member 71 to rotate the engagement release member 71 . As shown in FIG. 7, the pressing portion 73 rotating about the axis of the shaft 4 abuts against the female screw member 32 and presses the female screw member 32, so that the female screw member 32 is rotated around the shaft portion 331. As shown in the figure, it rotates counterclockwise. The pressing portion 74 rotating about the axis of the shaft 4 contacts the female screw member 31 and presses the female screw member 31, so that the female screw member 31 rotates counterclockwise in the figure about the shaft portion 311. rotate to

The disengagement mechanism 7 acts on the support mechanism 3 to disengage the female thread surface 314 of the female thread member 31 and the female thread surface 334 of the female thread member 32 from the male thread surface 41 of the shaft 4. become. Since the meshing between the support mechanism 3 and the shaft 4 is released, the shaft 4 can move in the axial direction without being restrained by the female screw members 31 and 32 . The first wall surface 301 defines the rotational movement range of the female screw member 31 . The second wall surface 302 defines the rotational movement range of the female screw member 32 .

As shown in FIGS. 3 to 5, the protrusions 76 and 77 at the tip of the disengagement member 71 are formed to have a smaller dimension in the circumferential direction than the arcuate holes 57 and 58 formed in the movable member 5 . By rotating the disengagement member 71, the protrusions 76 and 77 are also rotated around the axes. A gap is formed between the convex portion 76 and the arc-shaped hole 57, and a gap is formed between the convex portion 77 and the arc-shaped hole 58, thereby avoiding interference between the convex portions 76 and 77 and the movable member 5. It is Therefore, the rotation of the disengagement member 71 does not affect the arrangement of the movable member 5 .

FIG. 8 is a front view showing the clamp device 101 attached to the object 200 to be fixed. As shown in FIG. 8, the clamping device 101 is attached to the fixed object 200 by clamping the fixed object 200 between the fixed member 1 and the movable member 5 . More specifically, the fixed object 200 is sandwiched between the receiving surface 14 of the receiving portion 12 of the fixed member 1 and the sandwiching surfaces 53 and 55 of the side plates 52 and 54 of the movable member 5 .

A pair of arcuate holes 57 , 58 are formed in the movable member 5 , and projections 76 , 77 at the tip of the disengagement member 71 pass through the arcuate holes 57 , 58 , respectively, and protrude from the base plate 51 of the movable member 5 . ing. When the clamping device 101 is attached to the object 200 to be fixed, the tip curved surfaces 78 and 79 of the projections 76 and 77 are in surface contact with the object 200 to be fixed so as to sandwich the object 200 to be fixed.

The engagement of the projections 76 and 77 against the fixed object 200 prevents the engagement release member 71 from rotating about the axis of the shaft 4 . Therefore, in a state where the clamp device 101 is attached to the object 200 to be fixed, the second operation member 70 cannot be rotated to be in the disengaged state.

FIG. 9 is a front view showing the clamp device 101 being removed from the fixed object 200. FIG. With the clamping device 101 attached to the object 200 shown in FIG. The shaft body 4 moves in the axial direction due to the screw action with the female threaded surfaces 314 and 334 of 32 . The entire assembly including the shaft 4 , the movable member 5 , the first operating member 6 and the disengagement mechanism 7 is axially moved to separate from the fixed object 200 . The assembly is separated from the object to be fixed 200 to a position where the projecting portions 76 and 77 at the tip of the disengagement member 71 do not sandwich the object to be fixed 200 .

When the engagement release member 71 is separated from the fixed object 200 and the rotation of the engagement release member 71 is no longer hindered by the fixed object 200 , the engagement release member 71 can be rotated by operating the second operating member 70 . A simple operation of rotating the second operating member 70 brings the support mechanism 3 and the shaft body 4 into a disengaged state in which the engaged state is released. In this state, the first operating member 6 is grasped and the assembly is axially moved away from the fixed object 200 . This allows the clamping device 101 to be removed from the fixed object 200 .

As described above, in the clamp device 101 of the embodiment, as shown in FIG. 5, the movable member 5 is formed with a pair of arcuate holes 57 and 58 around the through hole 56 . As shown in FIG. 3, the disengagement mechanism 7 has a pair of projections 76, 77 arranged to penetrate the pair of arcuate holes 57, 58, respectively.

A pair of protrusions 76 and 77 are in contact with the object to be fixed 200 when the clamp device 101 is attached to the object to be fixed 200 as shown in FIG. This restricts the rotation of the disengagement member 71 . Since the operation of rotating the second operating member 70 is restricted, the clamping device 101 cannot be disengaged while attached to the object 200 to be fixed. In the disengaged state, the distance between the receiving portion 12 of the fixed member 1 and the movable member 5 can be varied greatly, but since the disengaged state cannot be achieved, an operation to gradually widen the distance between the receiving portion 12 and the movable member 5 is performed. will be performed. A worker who notices that the clamping of the fixed object 200 between the receiving portion 12 and the movable member 5 has begun to loosen can properly support the clamp device 101 and/or the infusion pump main body 102 . Therefore, it is possible to prevent the clamp device 101 from falling due to its own weight.

As shown in FIGS. 8 and 9 , the disengagement mechanism 7 may be configured to be axially movable integrally with the shaft 4 by operating the first operating member 6 . By operating the first operation member 6 from the state where the clamp device 101 is attached to the object 200 to be fixed, the disengagement mechanism 7 can be moved away from the object 200 to be fixed. When the projections 76 and 77 of the engagement release mechanism 7 are separated from the fixed object 200, the engagement release member 71 can be freely rotated. By disengaging this state and increasing the distance between the receiving portion 12 of the fixed member 1 and the movable member 5, the clamp device 101 can be quickly removed from the object 200 to be fixed.

As shown in FIG. 3, the arcuate holes 57, 58 may extend in the circumferential direction around the axis of the shaft 4, and the protrusions 76, 77 may have arcuate shapes extending in the circumferential direction. By adopting such a shape, it is possible to rotate the disengagement member 71 including the protrusions 76 and 77 in the circumferential direction.

As shown in FIG. 3 , the projections 76 and 77 may be smaller in circumferential dimension than the arc-shaped holes 57 and 58 . 7 from the engaged state shown in FIG. 6 can be prevented from being hindered by the movable member 5, the engagement release member 71 can be reliably operated. By rotating, the engagement between the support mechanism 3 and the shaft 4 can be released.

As shown in FIG. 8, the projections 76 and 77 may have a shape that allows surface contact with the object 200 to be fixed. In this way, when the clamp device 101 is attached to the object 200 to be fixed, the projections 76 and 77 are brought into contact with the object 200 to be fixed, and the rotation of the disengagement member 71 can be restricted. be possible.

As shown in FIG. 4, the protrusions 76 and 77 may have tip curved surfaces 78 and 79 with concave tips. In this way, the projections 76 and 77 having a shape suitable for the object to be fixed 200, which is a columnar pole, can be realized.

The clamp device 101 of the embodiment is not limited to being used in the infusion pump device 100 to fix the infusion pump main body 102 to the object 200 to be fixed, but can be used to fix various objects to the object to be fixed. can be done.

Although the embodiments have been described as above, the embodiments disclosed this time are illustrative in all respects and should not be considered restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

Reference Signs List 1 fixed member 2 mounting member 3 support mechanism 4 shaft 5 movable member 6 first operation member 7 disengagement mechanism 11 support portion 12 receiving portion 13 connecting portion 14 receiving surface 30 housing , 31, 32 female screw member, 33, 34 elastic member, 41 male screw surface, 43 tip portion, 48 locking member, 51 base plate, 52, 54 side plate, 53, 55 holding surface, 56 through hole, 57, 58 arc-shaped hole 70 second operation member 71 disengagement member 72 engaging portion 73, 74 pressing portion 75 ring portion 76, 77 convex portion 78, 79 tip curved surface 100 infusion pump device 101 clamp Apparatus 102 infusion pump main body 200 object to be fixed 301 first wall surface 302 second wall surface 311, 331 shaft portion 312, 332 depression portion 314, 334 female screw surface.

Claims (6)

A fixed member and a movable member capable of reciprocating relative to the fixed member so as to approach and separate from the fixed member, and an object to be fixed is sandwiched between the fixed member and the movable member. , a clamping device,
a shaft having a first end to which the movable member is attached and a second end opposite the first end;
a first operating member attached to the second end and operable to rotate the shaft around an axis and move the shaft in an axial direction;
a support mechanism that supports the shaft by meshing with the shaft;
a disengagement mechanism that disengages the support mechanism and the shaft by acting on the support mechanism;
The movable member is formed with a through hole through which the shaft penetrates and a pair of hole portions formed around the through hole,
The disengagement mechanism has a pair of protrusions arranged to penetrate the holes, and a second operation member capable of rotating the protrusions around the axis of the shaft. . 2. The clamping device according to claim 1, wherein said disengagement mechanism is configured to be movable in said axial direction integrally with said shaft by operating said first operating member. The hole is an arcuate hole extending in a circumferential direction around the axis of the shaft,
3. The clamping device according to claim 1, wherein said convex portion has an arcuate shape extending in said circumferential direction. 4. The clamping device according to claim 3, wherein said convex portion is smaller in dimension in said circumferential direction than said arcuate hole. The clamping device according to any one of claims 1 to 4, wherein the convex portion has a shape capable of surface-contacting the object to be fixed. 6. The clamping device according to claim 5, wherein the projection has a tip curved surface with a concave tip.

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