JP2015042895A - Clamp device and transfusion pump device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily release the engagement of a male screw part and a female screw part of a shaft body in a clamp device.SOLUTION: A clamp device according to one side face of this invention comprises: a shaft body formed with a male screw part which is engaged with a support mechanism; a first operation member for rotating the shaft body around a shaft; and an engagement release mechanism which releases an engagement state of the support mechanism and the shaft body. The support mechanism includes a plurality of female screw members which are engaged with the male screw part of the shaft body, and a plurality of elastic members which press the female screw members to the male screw part of the shaft body. The engagement release mechanism includes a plurality of engagement release members, and a second operation member which imparts forces to the engagement release members to a direction in which the female screw members are pressed. Each female screw member is constituted so as to be capable of taking a first position which is pressed by the elastic member and engaged with the male screw part, and a second position which separates from the male screw part by being pressed by the engagement release member while withstanding an elastic force of the elastic member.

Description

  The present invention relates to a clamp device and an infusion pump device provided with the same.

  As a general clamping device, there is known a clamping device having a fixed member and a movable member to which a shaft body with a male screw is attached and screwing the shaft body into a female screw portion of a support member. In this clamping device, a clamping object is sandwiched between a fixed member and a movable member, and the movable body is brought close to the stationary part by rotating the shaft body around the axis, thereby fastening the movable member to the clamping object. Use is made. However, this clamping device has a problem that it takes time to operate because the movable member is brought close to the fixed member by rotating the shaft body. Therefore, in order to make it easy to attach the clamping device to the clamping object, a mechanism has been proposed in which a mechanism for releasing the engagement between the shaft body and the female screw portion is provided so that the shaft body can be quickly moved in the axial direction. (Patent Documents 1 to 3).

JP 2007-125248 A JP 2009-045114 A JP 2010-046881 A

  However, in the clamping devices disclosed in Patent Documents 1 to 3, two operating members must be operated in order to release the engagement between the male screw and the female screw portion of the shaft body. That is, the engagement between the male screw and the female screw portion of the shaft body can be released only after two kinds of operations of pulling and rotating the shaft body are performed. For this reason, there has been a problem that the operation of releasing the engagement between the male screw portion of the shaft body and the female screw member is complicated.

  In one aspect, the present invention has been made in consideration of such points, and enables the engagement between the male screw portion and the female screw portion of the shaft body in the clamp device to be released by a simple operation. Objective.

  The present invention employs the following configuration in order to solve the above-described problems.

  That is, the first aspect of the present invention includes a base having a first end and a second end, a fixing member disposed on the first end of the base, and a second end of the base. A support mechanism disposed on the part side so as to face the fixing member, and a shaft body formed with a male screw portion extending through the support mechanism and extending along the base and meshing with the support mechanism; A movable member that is rotatably attached to a first end portion of the shaft body and sandwiches an object to be clamped with the fixed member, and is attached to a second end portion of the shaft body. A clamp device comprising: a first operating member that rotates around an axis; and a mesh release mechanism that is provided so as to act on the support mechanism and releases a meshed state between the support mechanism and the shaft body.

  The support mechanism is divided around the axis of the shaft body, and a plurality of female screw members that mesh with the male screw portion of the shaft body, and the female screw members toward the male screw portion of the shaft body. A plurality of elastic members to be pressed. The mesh release mechanism is attached to a plurality of mesh release members configured to pass through the support mechanism and press the female screw members, and to the end portions of the mesh release members. A second operating member that applies force to the mesh release member in the direction of pressing the mesh.

  Further, each of the female screw members is pressed by the elastic member to be engaged with the male screw portion, and is pressed by the engagement release member against the elastic force of the elastic member. And a second position spaced apart from the male screw portion.

  In the above configuration, the fixing member is disposed on the first end side of the base, and the support mechanism is disposed on the second end side of the base. A shaft body passes through the support mechanism, and a male screw portion that meshes with the support mechanism is formed in the shaft body. A movable member that clamps an object to be clamped with the fixed member is rotatably attached to the first end of the shaft body, and the shaft body is attached to the second end portion of the shaft body. A first operating member that rotates the shaft around the axis is attached.

  Therefore, in the above configuration, when the first operating member is rotated in a state where the support mechanism and the shaft body are engaged with each other, the shaft body can be moved in the axial direction together with the movable member by the screw mechanism. Accordingly, the clamp object can be held between the fixed member and the movable member.

  On the other hand, the support mechanism includes a plurality of female screw members divided around the shaft body and a plurality of elastic members that press the respective female screw members. The elastic member is, for example, a compression spring. Each female screw member is pressed by the elastic member and takes a first position where it engages with the male screw portion of the shaft body.

  On the other hand, a mesh release mechanism that releases the meshed state of the support mechanism and the shaft body is provided so as to act on the support mechanism. The mesh release mechanism is attached to a plurality of mesh release members configured to pass through the support mechanism and capable of pressing each female screw member and the end of the mesh release member, and meshes in the direction in which each female screw member is pressed. A second operating member that applies force to the release member. Each female screw member is pressed against the meshing release member against the elastic force of the elastic member based on the operation of the second operating member, thereby causing the second position to be separated from the male screw portion of the shaft body. take.

  Therefore, in the above configuration, in a state where the support mechanism and the shaft body are engaged with each other, by operating the second operation member unrelated to the first operation member, the engagement between the male screw portion and the female screw member of the shaft body is achieved. It can be canceled. Accordingly, the shaft body can freely move in the axial direction without being restrained by the female screw member. Therefore, the movable member and the fixed member can be quickly brought close to each other by moving the shaft body in the axial direction regardless of the screw mechanism. Thus, according to the above configuration, the engagement between the male screw portion and the female screw portion of the shaft body in the clamp device can be released by a simple operation.

  Further, in the second aspect of the present invention, at least two female screw members are provided, and at least two engagement release members are provided so as to sandwich the shaft body, and are rotatable around the shaft body. And when the operation of rotating the second operation member around the axis is performed, the shaft rotates around the axis of the shaft body and presses each of the female screw members. It is a clamp device of one form. According to this configuration, since the engagement between the male screw portion and the female screw portion of the shaft body can be released not by the axial operation but by the operation around the shaft, the axial length of the clamping device can be reduced. It becomes possible to suppress this.

  Further, a third aspect of the present invention is a fixture for fixing each female screw member at the first position when each female screw member takes the first position, and each mesh release member. The clamp device according to the second aspect, further comprising: a fixture that can release the fixation of each female screw member in response to rotation about the axis of the shaft body. According to this configuration, each female screw member can be fixed at the first position. Therefore, it is possible to prevent loosening of engagement between each female screw member and the male screw portion of the shaft body while the object to be clamped is held between the movable member and the fixed member.

  According to a fourth aspect of the present invention, in the clamp according to the third aspect, the fixture is configured to rotate in response to the engagement release members rotating about the axis of the shaft body. Device. According to the said structure, according to operating each mesh release member by a 2nd operation member, it becomes possible to operate a fixing tool.

  According to a fifth aspect of the present invention, in the first direction in which the first operating member is rotated about an axis in order to move the movable member in the direction of the clamp object, each female screw member is in the second direction. When the second operating member is rotated in a direction opposite to the second direction in which the second operating member is rotated about the axis to obtain the position, and the fixture rotates the second operating member in the first direction by a predetermined angle. In addition, in the clamp device according to the fourth aspect, the female screw members are configured to be fixed at the first position. According to this configuration, by operating the second operating member in the direction opposite to the direction in which the second operating member is operated so that each female screw member takes the second position away from the male screw portion of the shaft body, Each female screw member can be fixed at the first position meshing with the screw portion. Therefore, it becomes possible to prevent an erroneous operation of the second operation member with respect to each position of each female screw member, and the operability of the clamping device can be improved.

  According to a sixth aspect of the present invention, when the first operating member is further rotated in the first direction in a state where the object to be clamped is sandwiched between the movable member and the fixed member, The second operation is transmitted in the first direction in which the first operation member rotates such that the rotating force of the operation member is transmitted and the female screw members are fixed at the first position by the fixture. The clamp device according to the fifth aspect, further comprising a rotation transmission member that rotates the member. According to the said structure, it becomes possible to fix each internal thread part to the 1st position which meshes with the external thread part of a shaft body simultaneously with performing the retightening of a clamp apparatus. Therefore, it is possible to simplify the procedure for attaching the clamp device to the clamp object, and to improve the operability of the clamp device.

  Further, according to a seventh aspect of the present invention, when each of the female screw members includes a protrusion extending in the direction of the fixture, and the fixture has the first position when the female screw member takes the first position, It is a clamp apparatus which concerns on the form in any one of the said 3rd form-6th form provided with the latching | locking part which latches the projection part of each internal thread member. According to the said structure, it becomes possible to fix each internal thread member in a 1st position with the projection part of each internal thread member and the latching | locking part of a fixing tool. Therefore, it is possible to achieve the fixing of each female screw portion at the first position with a relatively simple configuration.

  Further, according to an eighth aspect of the present invention, in the first direction in which the first operating member is rotated around the axis in order to move the movable member in the direction of the clamp target, each of the female screw members is in the second direction. The clamp device according to any one of the second to seventh embodiments, which is opposite to the second direction in which the second operating member is rotated about the axis in order to achieve this position. According to this configuration, since the operation direction of the first operation member is different from the operation direction of the second operation member, it is possible to prevent the operation of the first operation member from being confused with the operation of the second operation member. Is possible.

  According to a ninth aspect of the present invention, the female screw member is swingably supported in the support mechanism so as to be able to take the first position and the second position. It is the clamp apparatus which concerns on either form from 2 form to 8th form. In the ninth embodiment, the direction of rotation around the axis of the mesh release member that presses each female screw member and the direction of swing of each female screw member can be matched. When the direction of rotation around the axis of the mesh release member that presses each female screw member and the direction of oscillation of each female screw member match, the rotational force of the mesh release member is smoothly transmitted to each female screw member. Therefore, it is possible to improve the operability of the second operation member that rotates the mesh release member.

  According to a tenth aspect of the present invention, each of the female screw members includes a hollow portion for inserting the elastic member, and the female screw member swings when the second operating member is operated in the hollow portion. In the ninth aspect, the clamping device according to the ninth aspect includes a side surface portion that contacts the inserted elastic member to determine the second position. According to the said structure, since a 2nd position is decided by the side part with which a hollow part is provided, it becomes possible to prevent the excessive rotation of the mesh release member based on the erroneous operation of a 2nd operation member.

  According to an eleventh aspect of the present invention, the shaft body extends through the second operation member, and the second operation member is attached to the second end of the shaft body. The clamp device according to any one of the first to tenth embodiments, wherein the clamp device is configured to be located within a range that can be operated by a hand holding the first operation member. According to this configuration, since the second operation member can be operated while holding the first operation member, the operability of the clamping device can be improved.

  A twelfth aspect of the present invention is any one of the first to eleventh aspects, wherein the infusion pump body for delivering the infusion and the infusion pump body attached to the infusion pump body and fixing the infusion pump body to the fixed object. It is an infusion pump apparatus provided with the clamp apparatus which concerns on this form. According to this configuration, the engagement between the male screw portion and the female screw portion of the shaft body in the clamp device can be released by a simple operation.

  According to the present invention, the engagement between the male screw portion and the female screw portion of the shaft body in the clamp device can be released by a simple operation.

FIG. 1 illustrates the configuration of the clamping device according to the first embodiment. FIG. 2 illustrates the configuration of the clamping device in the meshing state in the first embodiment. FIG. 3 illustrates the configuration of the support mechanism according to the first embodiment in a meshed state. FIG. 4 illustrates the configuration of the mesh release mechanism according to the first embodiment. FIG. 5 illustrates the configuration of the clamping device according to the first embodiment in a meshing release state. FIG. 6 illustrates the configuration of the support mechanism according to the first embodiment in a mesh release state. FIG. 7 illustrates a procedure for attaching a clamp device to an object to be fixed (clamp object) in the first embodiment. FIG. 8 illustrates a procedure for removing the clamp device from the fixed object (clamp object) in the first embodiment. FIG. 9 is an exploded perspective view illustrating the configuration of the clamping device according to the second embodiment. FIG. 10 illustrates the assembled state of the clamping device according to the second embodiment. FIG. 11A illustrates the lock plate viewed from the first surface side. FIG. 11B is a perspective view illustrating the lock plate viewed from the first surface side. FIG. 11C illustrates the lock plate viewed from the second surface side. FIG. 11D is a perspective view illustrating the lock plate viewed from the second surface side. FIG. 12A illustrates the state of the lock plate and each female screw member in the first meshing state. FIG. 12B illustrates the state of each female screw member in the first meshing state. FIG. 12C illustrates the positional relationship between the lock plate and the protrusions of the female screw members in the first meshing state. FIG. 13A illustrates the state of the lock plate and each female screw member in the mesh release state. FIG. 13B illustrates the state of each female screw member in the mesh release state. FIG. 13C exemplifies the positional relationship between the lock plate and the protrusions of the female screw members in the disengaged state. FIG. 14A illustrates the state of the lock plate and each female screw member in the second meshing state. FIG. 14B illustrates the state of each female screw member in the second meshing state. FIG. 14C illustrates the positional relationship between the lock plate and the protrusion of the core female screw member in the second meshing state.

  Hereinafter, an embodiment according to an aspect of the present invention (hereinafter, also referred to as “this embodiment”) will be described with reference to the drawings. However, this embodiment described below is only an illustration of the present invention in all respects. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention. That is, in implementing the present invention, a specific configuration according to the embodiment may be adopted as appropriate.

§1 First embodiment [Configuration of clamping device]
First, the configuration of the clamp device 101A according to the first embodiment will be described with reference to FIGS. FIG. 1 is a front view illustrating the configuration of an infusion pump device 100 according to the first embodiment, and FIG. 2 is a perspective view of a clamp device 101A. As illustrated in FIG. 1, the clamping device 101 </ b> A according to the first embodiment is a device for fixing the infusion pump main body 102 to an object to be fixed (clamping object) 200, and includes a base 1, a fixing member 2, And a support mechanism 3. Hereinafter, each member will be described in detail. In addition, the to-be-fixed object 200 is a target object clamped by 101 A of clamp apparatuses, and may be read as the clamp target object 200. FIG. Moreover, the infusion pump main body 102 can use a well-known thing.

  As shown in FIGS. 1 and 2, the base 1 is a plate-like member extending in the axial direction (x-axis in the figure), and has a first end 11 and a second end 12 on both sides thereof. . The base 1 is formed in a U-shaped cross section with a side plate 13 provided on the side surface. On the side of the first end 11 of the base 1, a rectangular fixing member 2 that is connected perpendicularly to the base 1 is disposed. The fixing member 2 also has a side plate 21 and has a U-shaped cross section. The side plate 21 corresponds to the shape of the object to be fixed. In this example, the side plate 21 has an arc-shaped recess so as to correspond to the object to be fixed having an arc shape. In addition, a rectangular support mechanism 3 is coupled to the base 1 on the second end 12 side of the base 1 so that the support mechanism 3 and the fixing member 2 face each other. Has been placed. The base 1, the fixing member 2, and the support mechanism 3 may be formed as an integral configuration or may be formed as individual configurations. In addition, the shape formed by the base 1, the fixing member 2, and the support mechanism 3 may be a U shape as in the first embodiment, or may be other shapes.

  A shaft 4 extending along the base 1 passes through the support mechanism 3 as one of the components included in the clamp device 101A. A male thread portion 41 for engaging with the support mechanism 3 is formed on the outer peripheral surface of the shaft body 4. The shaft body 4 is supported by the support mechanism 3 by being engaged with the support mechanism 3 by the male screw portion 41. That is, the support mechanism 3 includes female screw members 31 and 33 that engage with the male screw portion 41, as will be described later. The male screw portion 41 may be formed on the entire axial direction of the shaft body 4 or may be formed on a part of the axial direction of the shaft body 4.

  A rectangular movable member 5 is rotatably attached to the first end 43 of the shaft body 4 as one of the constituent elements of the clamp device 101A. The first end 43 to which the movable member 5 is attached is located on the fixed member 2 side in the axial direction, and the movable member 5 can move in the axial direction together with the shaft body 4. That is, the movable member 5 can move adjacent to the fixed member 2 between the fixed member 2 and the support mechanism 3. Thereby, the to-be-fixed object 200 can be clamped between the fixing members 2.

  Therefore, like the fixed member 2, the movable member 5 is provided with a side plate 52, and the side plate 52 is formed with an arc-shaped recess so that the fixed object 200 having an arc-shaped outer shape can be sandwiched. Has been. In the first embodiment, the to-be-fixed object 200 is a destination for fixing an object to be fixed such as the infusion pump main body 102 by the clamp device 101A, and is, for example, a desk top plate or a columnar pole. Therefore, the fixed member 2 and the movable member 5 are formed with the arc-shaped recesses as described above. In addition, when the to-be-fixed object 200 is a top plate of a desk which has a horizontal surface, the surface at the to-be-fixed object 200 side of each of the fixed member 2 and the movable member 5 may be formed horizontally. In addition, you may have a shape according to the shape of the to-be-fixed object 200 used as the object which pinches | interposes the movable member 5 and fixing member 2 itself, without providing the above side plates.

  Moreover, the 1st operation member 6 is attached to the 2nd end part 44 of the shaft body 4 located in the axial direction opposite side of the 1st end part 43 as one of the components with which the clamp apparatus 101A is equipped. Yes. The first operation member 6 is an operation member for moving the movable member 5 and may be referred to as a knob, a handle, or the like. The shape of the first operating member 6 may be appropriately selected according to the embodiment, and may be, for example, a round shape as in the first embodiment. The shape of the first operating member 6 is preferably a shape that is easy for the user of the clamping device 101A to grip. The first operation member 6 can rotate the shaft body 4 around the axis in accordance with a rotation operation around the axis by the user of the clamping device 101A.

  When the first operating member 6 is rotated around the axis together with the shaft body 4 in a state where the support mechanism 3 and the shaft body 4 are engaged with each other, the shaft body 4 is moved in the axial direction by the screw mechanism. The movable member 5 attached to the first end 43 of the shaft body 4 moves in the axial direction by the amount that the shaft body 4 has moved in the axial direction. That is, in a state where the support mechanism 3 and the shaft body 4 are engaged with each other, the user performs an operation of rotating the first operation member 6 to move the movable member 5 in the axial direction so that the movable member 5 is fixed. The distance between the member 2 can be adjusted.

  Here, the relationship between the rotation direction of the first operation member 6 and the movement direction of the movable member 5 may be appropriately determined according to the embodiment. In the first embodiment, when the first operating member 6 is rotated clockwise with the axial direction of the shaft body 4 (x-axis in the figure) as a reference, the movable member 5 is moved to the fixed member 2 side (x-axis positive in the figure). The distance between the movable member 5 and the fixed member 2 is shortened. On the other hand, when the first operating member 6 is rotated counterclockwise with respect to the axial direction of the shaft body 4 (x-axis in the figure), the movable member 5 moves toward the support mechanism 3 (in the negative x-axis direction in the figure). The distance between the movable member 5 and the fixed member 2 is increased. That is, the clockwise direction corresponds to the first direction of the present invention. Further, the counterclockwise direction corresponds to the second direction of the present invention.

  When the shaft body 4 rotates around the axis, the movable member 5 attached to the first end 43 of the shaft body 4 may rotate around the axis. In order to prevent this, the movable member 5 may be provided with a pair of anti-rotation pieces 51 so as to sandwich the base 1 in a direction perpendicular to the axial direction (a direction perpendicular to the paper surface in the drawing). These rotation preventing pieces 51 are in contact with the side plate 13 of the base 1 and are moved along the side plate 13.

  Thus, in the clamp device 101A according to the first embodiment, the movable member 5 can be moved in the axial direction by rotating the first operation member 6. However, if all the movements of the movable member 5 in the axial direction are performed by the rotation operation of the first operation member 6, depending on the movement distance of the movable member 5, a large burden may be imposed on the user. That is, since the movement of the shaft body 4 is performed by a screw mechanism, there is a problem that it takes time to move the movable member 5. In order to reduce such a burden, a mechanism for releasing the meshing state between the support mechanism 3 and the shaft body 4 is generally provided so that the movable member 5 can be moved freely in the axial direction together with the shaft body 4. It is done. The clamp device 101A according to the first embodiment includes a mesh release mechanism 7 described later as the configuration for releasing the mesh state between the support mechanism 3 and the shaft body 4.

  In addition, as illustrated in FIG. 1, the clamp device 101 </ b> A according to the first embodiment constitutes an infusion pump device 100 together with an infusion pump main body 102 that sends out the infusion. That is, the clamp device 101 </ b> A according to the first embodiment is attached to the infusion pump main body 102 that sends out the infusion, and is used to fix the infusion pump main body 102 to the fixed object (clamp object) 200. However, the target to which the clamping device 101A according to the first embodiment is applied is not limited to the infusion pump main body 102, and may be appropriately selected according to the embodiment.

  In the first embodiment, the clamp device 101A is attached to the infusion pump main body 102 by fixing the base 1 of the clamp device 101A to the side surface of the infusion pump main body 102 using a fixing member such as a screw. However, the location where the clamp device 101A and the infusion pump main body 102 are fixed is not limited to the side surface portion of the infusion pump main body 102 and the base portion 1 of the clamp device 101A, and may be appropriately selected according to the embodiment. .

[Description of mesh release mechanism]
Next, the configuration and operation of the mesh release mechanism 7 will be described with reference to FIG. Here, the mesh release mechanism 7 according to the first embodiment acts on the support mechanism 3 that supports the shaft body 4 to release the meshing state between the support mechanism 3 and the shaft body 4. Therefore, first, the meshing state of the support mechanism 3 and the shaft body 4 will be described with reference to FIGS.

(Meshing state)
FIG. 3 is a cross-sectional view illustrating the configuration of the support mechanism 3 in the meshing state. As illustrated in FIG. 3, the support mechanism 3 includes a rectangular parallelepiped housing 30, and an internal space surrounded by two opposing inner wall surfaces is formed therein. Here, the inner wall surfaces facing in the longitudinal direction are referred to as the first wall surface 301 and the second wall surface 302, and the inner wall surfaces facing in the direction orthogonal thereto are referred to as the third wall surface 303 and the fourth wall surface 304. In the internal space surrounded by these wall surfaces, in order to support the shaft body 4, two female screw members (first female screw member 31, second female screw member 33) and two elastic members ( The first elastic member 32 and the second elastic member 34) are provided.

  The first female screw member 31 and the second female screw member 33 are divided and arranged around the axis of the shaft body 4. The first female screw member 31 and the second female screw member 33 are swingably supported by the shaft portion 311 and the shaft portion 331. Specifically, as shown in FIG. 3, the first female screw member 31 is swingably supported by the shaft portion 311 on the third wall surface 303 side, and the female screw surface 314 and the male screw portion are swung by the swing. 41 is closely spaced. On the other hand, the second female screw member 33 is swingably supported by the shaft portion 331 on the fourth wall surface 304 side, and the female screw surface 334 and the male screw portion 41 come close to and away from each other by the swing. Yes.

  The first female screw member 31 and the second female screw member 33 have female screw surfaces 314 and 334 facing the shaft body 4 side, respectively. On the other hand, in the first female screw member 31 and the second female screw member 33, depressions 312 and 332 are formed on the side opposite to the female screw surfaces 314 and 334, that is, the side facing the inner wall surface of the housing 30, respectively. Yes. Then, the first elastic member 32 and the second elastic member 34 fixed to the first wall surface 301 and the second wall surface 302 in the housing 30 are fitted in the recess portions 312 and 332, respectively. Thus, the first female screw member 31 and the second female screw member 33 are pressed toward the male screw portion 41 of the shaft body 4 while being swung, and mesh with the male screw portion 41. The first elastic member 32 and the second elastic member 34 are members that respectively press the first female screw member 31 and the second female screw member 33 toward the male screw portion 41 by an elastic force, for example, a compression spring. is there. By such elastic members 32 and 34, the state where the first female screw member 31 and the second female screw member 33 are engaged with the male screw portion 41 of the shaft body 4 is always maintained. The positions of the first female screw member 31 and the second female screw member 33 at this time correspond to the first position of each female screw member of the present invention.

  The recesses 312 and 332 in the female screw members 31 and 33 are tapered toward the wall surface of the housing, and the elastic members 32 and 34 extend along the wall surfaces of the recesses 312 and 332. ing. For example, when the female screw members 31 and 33 as shown in FIG. 3 are engaged with the male screw portion 41, the first female screw member 31 extends along the side surface of the recess 312 on the third wall surface 303 side. A first elastic member 32 is disposed. On the other hand, in the second female screw member 33, the second elastic member 34 is disposed along the side surface of the recessed portion 332 on the fourth wall surface 304 side. That is, the elastic members 32 and 34 are arranged along the side surfaces, so that the elastic force can be applied to the male screw portion 41 in a straight line. Further, when the female screw members 31, 33 swing and are separated from the male screw portion 41, they are arranged along the opposite side surface.

  Further, when the first female screw member 31 is swung, the side surface portion of the recess 312 and the first elastic member 32 come into contact with each other, and the movement of the first female screw member 31 is inhibited. Therefore, a range in which the first female screw member 31 swings is defined based on the first elastic member 32 and the recess 312. In the example of FIG. 6 described later, a position (corresponding to a second position of the present invention) in which the first female screw member 31 is separated from the male screw portion 41 is determined by the side surface portion 313 of the hollow portion 312. . The same applies to the second female screw member 33. Therefore, in the first embodiment, since the swing range of the first female screw member 31 and the second female screw member 33 can be determined, the first mesh release member 71 based on the erroneous operation of the second operation member 73 and Excessive rotation of the second mesh release member 72 can be prevented. When the first female screw member 31 is swung, the side surface of the female screw member 31 and the fourth wall surface 304 may be in contact with each other, so that the movement of the first female screw member 31 may be inhibited. In this case, a range in which the first female screw member 31 swings is defined by the fourth wall surface 304. That is, a position (corresponding to the second position of the present invention) at which the first female screw member 31 is separated from the male screw portion 41 is determined by the fourth wall surface 304.

(Configuration of mesh release mechanism and release operation)
Next, the configuration of the mesh release mechanism 7 that releases the mesh state between the support mechanism 3 and the shaft body 4 will be described with reference to FIG. FIG. 4 illustrates the mesh release mechanism 7 according to the first embodiment. As illustrated in FIG. 4, the mesh release mechanism 7 includes two rods that are formed in a bar shape so as to release the mesh state between the female screw members 31 and 33 of the support mechanism 3 and the shaft body 4. Members (first mesh release member 71, second mesh release member 72) and a second operation member 73 for applying a force to each of the mesh release members 71, 72. The second operation member 73 is disposed closer to the support mechanism 3 than the first operation member 6.

  The first mesh release member 71 and the second mesh release member 72 are arranged in parallel to the shaft body 4 and facing each other so as to sandwich the shaft body 4. Specifically, as shown in FIG. 3, the first female screw member 31 and the second female screw member 33 are arranged in the gaps, respectively, so that they rotate integrally around the shaft body 4. Further, it is supported by the housing 30 of the support mechanism 3. The end portions of the first mesh release member 71 and the second mesh release member 72 on the fixed member 2 side are fixed to a circular ring member 74, and the ring member 74 is fixed to the movable member 5 in a freely rotatable manner. Has been. The shaft member 4 is inserted through the ring member 74, but does not interfere with the operation of the shaft member 4. On the other hand, a cylindrical second operation member 73 is attached to the opposite end of the both mesh release members 71 and 72. A through hole is formed in the second operation member 73, and the shaft body 4 is inserted through the through hole. Accordingly, the second operation member 73 does not interfere with the operation of the shaft body 4.

  The second operation member 73 is configured to be located in a range that can be operated by a hand holding the first operation member 6. Accordingly, it is possible to operate the second operation member 73 while holding the first operation member 6. That is, the first operation member 6 and the second operation member 73 can be operated with one hand, and the operability of the clamp device 101A can be improved.

  The second operation member 73 is a component for performing an operation of releasing the meshing state between the support mechanism 3 and the shaft body 4. When the second operation member 73 is rotated leftward around the shaft body 4, Both the mesh release members 71 and 72 rotate integrally around the shaft body 4. Thus, when both the mesh release members 71 and 72 rotate around the shaft body 4, they press the first female screw member 31 and the second female screw member 33, respectively, and the male screw portion of the shaft body 4. Separate from 41. Specifically, as shown in FIGS. 5 and 6, the first mesh release member 71 presses the first female screw member 31, and the second mesh release member 72 presses the second female screw member 33. Accordingly, the first female screw member 31 swings against the elastic force of the first elastic member 32 and is separated from the shaft body 4. On the other hand, the second female screw member 33 also swings against the elastic force of the second elastic member 34 and is separated from the shaft body 4. In this state, since the female screw members 31 and 33 are separated from the shaft body 4, the shaft body 4 can be moved in the axial direction without being constrained by the female screw members 31 and 33. The positions of the first female screw member 31 and the second female screw member 33 at this time correspond to the second position of each female screw member of the present invention.

  Therefore, according to the first embodiment, the rotational forces of the first mesh release member 71 and the second mesh release member 72 can be smoothly transmitted to the first female screw member 31 and the second female screw member 33, respectively. Then, the first female screw member 31 and the second female screw member 33 swing so as to interlock with this rotational force. Therefore, the operability of the second operation member 73 that rotates the first mesh release member 71 and the second mesh release member 72 can be improved.

[Example of operation procedure]
Next, the operation procedure of the clamp device 101A will be described with reference to FIGS. The operation procedure described below is merely an example, and steps can be omitted, replaced, and added as appropriate.

(Installation operation)
First, the procedure for attaching the clamp device 101A to the fixed object 200 will be described with reference to FIG. FIG. 7 illustrates a procedure for attaching the clamp device 101 </ b> A to the fixed object 200.

  First, in step S <b> 11, the user arranges the clamp device 101 </ b> A so that the fixing member 2 contacts the fixed object 200. Then, the user twists the second operation member 73 counterclockwise to release the meshing state between the support mechanism 3 and the shaft body 4. When the user twists the second operation member 73 counterclockwise, the first female screw member 31 is pressed and swung by the first mesh release member 71 as described above, and the second female release member 72 rotates the second female member. The screw member 33 is pressed and swings. As a result, the first female screw member 31 and the second female screw member 33 are separated from the male screw portion 41 of the shaft body 4. As a result, the engagement of the first female screw member 31 and the second female screw member 33 with the male screw portion 41 is released. Therefore, the user can freely move the movable member 5 in the axial direction without depending on the rotation operation of the first operation member 6.

  In the next step S <b> 12, the user keeps the second operating member 73 counterclockwise in step S <b> 11 until the movable member 5 contacts the fixed object 200 until the movable member 5 comes into contact with the fixed member 2. Move to the side. Here, in order to move the movable member 5 to the fixed member 2 side, the user may press either the first operation member 6 or the second operation member 73 in the positive axial direction. However, the second operation member 73 is configured to be located in a range that can be operated by a hand holding the first operation member 6. Therefore, the user can push in the 1st operation member 6 with a palm, twisting the 2nd operation member 73 with a finger. Therefore, the user can move the movable member 5 with a small force when the first operating member 6 is pressed.

  The first female screw member 31 and the second female screw member 33 are pressed by the first elastic member 32 and the second elastic member 34 in the direction of meshing with the male screw portion 41 of the shaft body 4. Therefore, when the user releases the hand from the second operation member 73, the clamp device 101A returns to the meshing state. Therefore, the user maintains the state where the second operation member 73 is twisted in step S11 in order to maintain the engagement release state of the clamp device 101A.

  In subsequent step S <b> 13, the user releases the hand from the second operation member 73 to return the clamp device 101 </ b> A to the meshing state. Then, the user rotates the first operation member 6 clockwise to finely adjust the distance between the fixed member 2 and the movable member 5 so that the clamp device 101A does not come off from the fixed object 200. That is, by rotating the first operation member 6, the shaft body 4 is moved to the fixed object 200 side, and the fixed object 200 is tightened by the movable member 5. Through the above steps, the user roughly adjusts the distance between the fixed member 2 and the movable member 5 by the operation of Step S12 and performs the fine adjustment by the operation of Step S13. Thereby, the operation of attaching the clamp device 101A (infusion pump main body 102) to the fixed object 200 is completed.

(Removal operation)
Next, a procedure for removing the clamping device 101A from the fixed object 200 will be described with reference to FIG. FIG. 8 illustrates a procedure for removing the clamp device 101A from the fixed object 200.

  First, in step S <b> 21, the user twists the second operation member 73 counterclockwise to release the meshing state between the support mechanism 3 and the shaft body 4. As a result, the force for clamping the fixed object 200 generated based on the engagement of the first female screw member 31 and the second female screw member 33 with the male screw portion 41 is released. Therefore, at this time, the user can remove the clamping device 101A from the fixed object 200.

  In the next step S22, the user holds the second operating member 73 counterclockwise and holds at least one of the first operating member 6 and the second operating member 73 while holding the second operating member 73 counterclockwise. By pulling in the direction, the movable member 5 is moved to the support mechanism 3 side. The operation in step S22 is performed exclusively for using the clamping device 101A from the next time onward. When the size of the fixed object 200 from the next time is unknown at the time of performing the operation of step S22, the user provides the movable member 5 with the support mechanism 3 in order to prepare the fixed object 200 with the unknown size. You may move it to the side as much as possible.

  In subsequent step S <b> 23, the user releases the hand from the second operation member 73 to return the clamp device 101 </ b> A to the meshing state. Then, the user pulls the clamping device 101A away from the fixed object 200. Thereby, the operation of removing the clamping device 101A (infusion pump main body 102) from the fixed object 200 is completed.

[Feature]
As described above, according to the first embodiment, the two mesh release members 71, 72 configured to penetrate the support mechanism 3 and press the female screw members 31, 33, and the mesh release members 71. , 72, and a second operating member 73 that applies force to the mesh release members 71, 72 in the direction of pressing the female screw members 31, 33. The female screw members 31 and 33 are pressed against the mesh release members 71 and 72 against the elastic force of the elastic members 32 and 34 based on the rotation operation of the second operation member 73, thereby 4 apart from the male screw part 41.

  Therefore, in the above configuration, in the state where the support mechanism 3 and the shaft body 4 are engaged with each other, by operating the second operation member 73 unrelated to the first operation member 6, the male screw portion 41 and the female body of the shaft body 4 are operated. The engagement with the screw members 31 and 33 can be released. As a result, the shaft body 4 can freely move in the axial direction without being restrained by the female screw members 31 and 33. Therefore, the movable member 5 and the fixed member 2 can be quickly brought close to each other by moving the shaft body 4 in the axial direction regardless of the screw mechanism. Thus, according to the above configuration, the engagement between the male screw portion 41 of the shaft body 4 and the female screw members 31 and 33 in the clamp device can be released only by the rotation operation of the second operation member 73.

  In the first embodiment, the direction in which the second operating member 73 is rotated about the axis in order to set the first female screw member 31 and the second female screw member 33 to the second positions illustrated in FIG. , Counterclockwise with respect to the axial direction of the shaft body 4. On the other hand, the direction in which the first operating member 6 is rotated about the axis in order to move the movable member 5 in the direction of the fixed object 200 is clockwise with respect to the axial direction of the shaft body 4.

  Therefore, the rotational direction in which the second operating member 73 is operated to release the meshing state between the support mechanism 3 and the shaft body 4 is that the first operating member 6 is operated to move the movable member 5 to the fixed member 2 side. The direction of rotation is opposite. Therefore, it is possible to prevent the operation of the second operation member 73 from being confused with the operation of the first operation member 6 when attaching the clamp device 101A to the fixed object 200.

§2 Second embodiment [Configuration of clamping device]
Next, the configuration of the clamp device 101B according to the second embodiment will be described with reference to FIGS. FIG. 9 is an exploded perspective view illustrating the configuration of the clamp device 101B according to the second embodiment. FIG. 10 illustrates the configuration of a clamp device 101B that is manufactured by assembling the components shown in FIG.

  As illustrated in FIGS. 9 and 10, the clamp device 101 </ b> B according to the second embodiment has substantially the same components as the clamp device 101 </ b> A according to the first embodiment. Therefore, the same code | symbol is attached | subjected about the component which is common in the clamp apparatus 101A which concerns on 1st Embodiment, and description is abbreviate | omitted suitably.

  A clamping device 101B according to the second embodiment is a device for fixing the infusion pump main body 102 to an object to be fixed (clamping object) 200, as in the first embodiment, and includes a base 1, a fixing member 2, and A support mechanism 3 is provided. The fixing member 2 is arranged on the first end side of the base 1, and the support mechanism 3 is arranged on the second end side of the base 1 so as to face the fixing member 2.

  The support mechanism 3 according to the second embodiment has the same configuration as that of the first embodiment, and the shaft body 4 extending along the base 1 passes therethrough. A male screw portion 41 is formed on the outer peripheral surface of the shaft body 4, and the first female screw member 31 and the second female screw member 33 incorporated in the support mechanism 3 mesh with the male screw portion 41. .

  A movable member 5 is rotatably attached to the first end of the shaft body 4. The clamp device 101 </ b> B is attached to the fixed object 200 by sandwiching the fixed object 200 between the movable member 5 and the fixed member 2.

  A first operating member 6 for rotating the shaft body 4 about the axis is attached to the second end portion of the shaft body 4. In a state where each female screw member (31, 33) is engaged with the male screw portion 41, the movable member 5 is moved to the fixed member 2 side (by rotating the first operating member 6 clockwise in the axial direction). Axially positive direction). On the other hand, when the first operating member 6 is rotated counterclockwise with respect to the axial direction, the movable member 5 moves to the support mechanism 3 side (negative direction in the axial direction).

  The clamping device 101B according to the second embodiment releases the meshing state between the female screw members (31, 33) built in the support mechanism 3 and the male screw portion 41 of the shaft body 4 as in the first embodiment. As a configuration for this, a mesh release mechanism 7 is provided. The mesh release mechanism 7 includes a pair of mesh release members (71, 72) and a second operation member 73 for applying a force to each of the mesh release members (71, 72).

  The first female screw member 31 and the second female screw member 33 are pressed toward the male screw portion 41 by the elastic force of the first elastic member 32 and the second elastic member 34, respectively. Here, when the second operating member 73 is rotated counterclockwise, the both meshing release members (71, 72) rotate integrally around the axis of the shaft body 4. The first mesh release member 71 presses the first female screw member 31 against the elastic force of the first elastic member 32. The second mesh release member 72 presses the second female screw member 33 against the elastic force of the second elastic member 34. Thereby, the first female screw member 31 and the second female screw member 33 are separated from the male screw portion 41 of the shaft body 4. Therefore, the shaft body 4 can be freely moved in the axial direction without being restrained by the both female screw members (31, 33).

  That is, similarly to the first embodiment, in the clamp device 101B according to the second embodiment, the shaft body 4 can be freely moved in the axial direction in a state where both the female screw members (31, 33) are engaged with the male screw portion 41. Can't move on. In this state, the shaft body 4 can be moved in the axial direction by rotating the first operating member 6. On the other hand, by rotating the second operation member 73 counterclockwise, in a state where both the female screw members (31, 33) are separated from the male screw portion 41, regardless of the rotation operation of the first operation member 6, The shaft body 4 can be moved freely in the axial direction.

  Therefore, when the clamp device 101B is attached to the fixed object 200, the user operates the second operation member 73 as described in the attachment operation of the first embodiment, and both female screw members (31, 33). ) And the male screw portion 41 are released. Next, the user moves the shaft body 4 in the axial direction without depending on the rotation operation of the first operation member 6, and sets the distance between the fixed member 2 and the movable member 5 to the size of the fixed object 200. Adjust roughly to match. Then, the user stops the operation of the second operation member 73 and causes both the female screw members (31, 33) to mesh with the male screw portion 41. Finally, the user operates the first operating member 6 to move the shaft body 4 in the axial direction so that the distance between the fixed member 2 and the movable member 5 matches the size of the fixed object 200. To make fine adjustments. Thereby, the clamping device 101B can be attached to the fixed object 200.

  Here, when the fixed object 200 is clamped between the movable member 5 and the fixed member 2, the reaction force of the clamping force is applied from the fixed object 200 to the shaft body 4. The reaction force is a force that opposes the elastic force of both elastic members (32, 34) via the threaded threads of the male screw portion 41 and the female screw members (31, 33). Therefore, depending on the magnitude of the elastic force of each elastic member (32, 34), there is a possibility that both the female screw members (31, 33) are separated from the male screw portion 41 due to the reaction force. is there. Thereby, in the clamping device 101A, there is a case where the state in which the fixed object 200 is sandwiched between the movable member 5 and the fixed member 2, in other words, the state in which the clamping device 101A is attached to the fixed object 200 may not be maintained.

  Therefore, unlike the first embodiment, the clamp device 101B according to the second embodiment includes a disk-shaped lock plate 8 in order to solve such a problem. As illustrated in FIG. 9, the lock plate 8 is disposed between the first cover member 35 and the second cover member 36 so as to be rotatable around the axis of the shaft body 4.

  The lock plate 8 is in a state in which both female screw members (31, 33) are engaged with the male screw portion 41, in other words, each female screw member (31, 33) is in the first position. Then, each female screw member (31, 33) is fixed. Thereby, it can suppress that both female screw members (31, 33) leave | separate from the external thread part 41, and it can prevent that the clamp apparatus 101B remove | deviates from the to-be-fixed object 200. FIG.

  The lock plate 8 can release the fixing of the female screw members (31, 33) as the mesh release members (71, 72) rotate around the axis of the shaft body 4. The lock plate 8 corresponds to the fixture of the present invention. The lock plate 8 will be described in detail later.

  Further, as illustrated in FIG. 9, in the second embodiment, unlike the first embodiment, the direction of the lock plate 8 is formed on the surface of each female screw member (31, 33) on the second operation member 73 side. Columnar protrusions (315, 335) extending in the direction are provided. The lock plate 8 uses these protrusions (315, 335) to fix the female screw members (31, 33) at the first position.

  Further, as illustrated in FIG. 9, in the clamping device 101 </ b> B according to the second embodiment, unlike the first embodiment, the friction pad 9 is disposed between the first operation member 6 and the second operation member 73. Has been. The friction pad 9 has a disk shape and has an opening for penetrating the shaft body 4.

[Lock plate]
Next, the lock plate 8 for fixing each female screw member (31, 33) at the first position illustrated in FIG. 3 will be described with reference to FIGS. 11A to 11D. FIG. 11A illustrates the lock plate 8 viewed from the first surface 84 side. FIG. 11B is a perspective view illustrating the lock plate 8 viewed from the first surface 84 side. FIG. 11C illustrates the lock plate 8 viewed from the second surface 85 side. FIG. 11D is a perspective view illustrating the lock plate 8 viewed from the second surface 85 side.

  The first surface 84 of the lock plate 8 faces the direction of both female screw members (31, 33) (positive direction of the x axis in FIG. 9). Further, the second surface 85 of the lock plate 8 faces the direction of the second operation member 73 (negative direction of the x axis in FIG. 9). As illustrated in FIGS. 11A to 11D, a U-shaped groove 83 penetrating from the first surface 84 to the second surface 85 is provided in the center of the lock plate 8.

  The width of the groove 83 is a size corresponding to the width of the shaft body 4 in the region near the center of the lock plate 8, and in accordance with the width of each mesh release member (71, 72) in the other regions. It is a size. As illustrated in FIG. 9, the shaft body 4 and each mesh release member (71, 72) pass through the groove 83, so that the lock plate 8 is connected to the shaft body 4 and each mesh release member (71, 72). 72). Accordingly, the lock plate 8 is prevented from being detached from the shaft body 4 and the respective mesh release members (71, 72) in the horizontal direction with respect to the first surface 84 and the second surface 85.

  Further, as illustrated in FIGS. 11A and 11B, the first surface 84 of the lock plate 8 is provided with a substantially rectangular first recess 81 into which the protrusion 315 of the female screw member 31 is fitted. A substantially rectangular second recess 82 into which the 33 projections 335 are fitted is provided. The general regions of the first recess 81 and the second recess 82 are wider than the width of each projection (315, 335) so that each projection (315, 335) can move freely. On the other hand, in FIG. 11A, a locking portion 811 having a slightly narrow width is provided at the upper portion of the first recess 81 in accordance with the width of the protruding portion 315. Similarly, a locking portion 821 having a slightly narrower width is provided below the second recess 82 in accordance with the width of the protrusion 335.

  When the lock plate 8 is rotated clockwise with respect to the axial direction (counterclockwise in FIG. 11A), the projection 315 fits into the locking portion 811 of the first recess 81, and the projection 335 extends from the second recess 82. It fits into the locking portion 821. Since each locking portion (811, 812) is provided in accordance with the width of each projection (315, 335), the projection 315 is locked to the locking portion 811, and the projection 335 is the locking portion. 821 is locked. In the second embodiment, by using such a simple structure of the lock plate 8 and the projections (315, 335) of the female screw members (31, 33), the female screw members (31, 33) are used. Can be fixed at the first position.

[Operation example]
Finally, an operation example of the clamp device 101B according to the second embodiment will be described. The clamping device 101B according to the second embodiment can be attached to and detached from the fixed object 200 by the same operation procedure as the clamping device 101A according to the first embodiment. That is, the clamp device 101B can be attached to the fixed object 200 by the procedure illustrated in FIG. Moreover, the clamp apparatus 101B can be removed from the fixed object 200 by the procedure illustrated in FIG.

  However, unlike the first embodiment, the clamp device 101B includes a lock plate 8 for fixing each female screw member (31, 33). Therefore, in the process illustrated in FIGS. 7 and 8, a situation occurs in which the state inside the support mechanism 3 is different from the case of the clamp device 101A. Below, this point is demonstrated using the attachment operation illustrated in FIG.

(First meshing state)
First, the internal state of the support mechanism 3 in the initial state illustrated in FIG. 7 will be described with reference to FIGS. 12A to 12C. The initial state illustrated in FIG. 7 is a state where neither the first operation member 6 nor the second operation member 73 is operated. In this operation example, in this state, both the female screw members (31, 33) are engaged with the male screw portion 41, but the lock plate 8 does not fix the female screw members (31, 33). .

  Here, although both the female screw members (31, 33) are engaged with the male screw portion 41, the state in which the lock plate 8 does not fix the female screw members (31, 33) for convenience of explanation. This is referred to as a first meshing state. The first meshing state may be referred to as a default state. FIG. 12A illustrates the state of the lock plate 8 and each female screw member (31, 33) in the first meshing state. FIG. 12B illustrates the state of the core female screw member in the first meshing state. FIG. 12C illustrates the positional relationship between the lock plate 8 and the protrusions (315, 335) of the female screw members (31, 33) in the first meshing state.

  For convenience of explanation, the vertical direction in FIGS. 12A to 12C is referred to as “vertical”, and the horizontal direction in FIGS. 12A to 12C is referred to as “left and right”. The direction from the front side to the back side in FIGS. 12A to 12C corresponds to the positive direction of the x-axis in FIGS. 9 and 10. In FIGS. 12A to 12C, the direction in which both female screw members (31, 33) oppose each other is represented by the y axis, and the direction perpendicular to the direction in which both female screw members (31, 33) oppose each other is represented by the z axis. Express. The same applies to FIGS. 13A to 13C and FIGS. 14A to 14C described later.

  In the second embodiment, the mutually facing surfaces of the first female screw member 31 and the second female screw member 33 are inclined S degrees to the right with respect to the z axis. Therefore, the shaft body 4 is constrained by the female screw members (31, 33) in a state where the line connecting the both meshing release members (71, 72) is inclined S degrees to the right with respect to the z axis.

  Here, as illustrated in FIGS. 12A to 12C, the lock plate 8 is in a state in which the engagement release members (71, 72) are sandwiched by the grooves 83. Therefore, the lock plate 8 rotates in accordance with the rotation of the both mesh release members (71, 72) around the axis in a state where the line connecting the both mesh release members (71, 72) and the axis D of the groove 83 coincide. To do. That is, according to the second embodiment, the lock plate 8 can be operated in accordance with the operation of the second operation member 73. For convenience of explanation, an angle formed by the axis D of the groove 83 and the z-axis is referred to as an inclination of the lock plate 8. That is, in the state of FIG. 12A to FIG. 12C, the lock plate 8 is referred to as being inclined to the right by S degrees.

  As illustrated in FIG. 12A and FIG. 12B, in this state, each female screw member (31, 33) is pressed in the direction of the male screw portion 41 by each elastic member (32, 34), and the male screw portion. 41 is engaged. However, as illustrated in FIG. 12C, in this state, the protrusions (315, 335) are not locked to the locking portions (811, 821). Therefore, when a force that opposes each elastic member (32, 34) is generated, each female screw member (31, 33) can swing by the width of each recess (81, 82). .

(Mesh release state)
Next, the internal state of the support mechanism 3 when the user performs the operation of step S11 illustrated in FIG. 7 and releases the engagement in the clamping device 101B in the initial state will be described with reference to FIGS. 13A to 13C. To do. FIG. 13A illustrates the state of the lock plate 8 and each of the female screw members (31, 33) in the mesh release state. FIG. 13B illustrates the state of each female screw member (31, 33) in the mesh release state. FIG. 13C illustrates the positional relationship between the lock plate 8 and the protrusions (315, 335) of the female screw members (31, 33) in the mesh release state.

  When the user rotates the second operation member 73 counterclockwise with respect to the axial direction as in step S11 illustrated in FIG. 7, the lock plate 8 rotates counterclockwise according to the rotation operation. . 13A and 13B illustrate a state in which the second operation member 73 is twisted counterclockwise until the lock plate 8 is tilted to the left by T degrees.

  When the lock plate 8 is rotated counterclockwise in this way, as illustrated in FIGS. 12C and 13C, the locking portions (811, 821) are separated from the protrusions (315, 335). Moving. Therefore, in this state, each female screw member (31, 33) is not fixed by the lock plate 8 and can swing by the width of each recess (81, 82).

  Therefore, as illustrated in FIGS. 13A and 13B, in this state, the first female screw member 31 is oriented in the direction of the first wall surface 301 with the shaft portion 311 as a base point due to the action of each mesh release member (71, 72). The second female screw member 33 swings in the direction of the second wall surface 302 with the shaft portion 331 as a base point. Then, when the female screw members (31, 33) are separated from the male screw portion 41, the engagement between the support mechanism 3 and the shaft body 4 is released (mesh release state). The same applies to the operation in step S12 illustrated in FIG.

(Second meshing state)
Finally, the internal state of the support mechanism 3 after the operation in step S13 is completed will be described with reference to FIGS. 14A to 14C. When the user releases the hand from the second operation member 73 in step S13, the clamp device 101B returns to the first meshing state by the action of each elastic member (32, 34). Here, in the second embodiment, the distance between the first operation member 6 and the second operation member 73 is configured to be slightly changeable.

  In a scene where the fixed object 200 is not sandwiched between the movable member 5 and the fixed member 2, the force with which the user operates the first operation member 6 is released in the direction of the movable member 5. Therefore, the force generated so as to sandwich the first operation member 6 and the second operation member 73 is weak. Therefore, in this scene, the distance between the first operating member 6 and the second operating member 73 is kept wide enough to prevent the friction pad 9 disposed between them from acting. In this state, the first operating member 6 and the second operating member 73 can be operated independently.

  On the other hand, when the clamping device 101B is tightened in a scene where the movable member 5 and the fixed member 2 are in contact with the fixed object 200 as in the procedure for adjusting the attachment strength in step S13, the reaction from the fixed object 200 is performed. This force acts on the first operating member 6. Therefore, in this scene, the force generated so as to sandwich the first operation member 6 and the second operation member 73 becomes strong. Due to the influence of this force, the distance between the first operating member 6 and the second operating member 73 is narrowed to such an extent that the friction pad 9 acts.

  The friction pad 9 corresponds to a rotation transmitting member of the present invention, transmits the rotating force of the first operating member 6 to the second operating member 73, and transmits the rotating force of the second operating member 73 to the first operating member 6. introduce. As the material of the friction pad 9, for example, foamed urethane, rubber, skin material, or the like is used. The first operating member 6 is made of a material having a size and a friction coefficient that can transmit the rotating force of the first operating member 6 to the second operating member 73.

  Therefore, in a state where the distance between the first operation member 6 and the second operation member 73 is narrowed to such an extent that the friction pad 9 acts, the first operation member 6 and the second operation member 73 operate integrally. . Therefore, when the user tightens the clamping device 101 </ b> B in step S <b> 13, the clockwise rotation force of the first operation member 6 is transmitted to the second operation member 73 by the action of the friction pad 9. Then, the lock plate 8 further rotates clockwise from the state illustrated in FIGS. 12A to 12C.

  As illustrated in FIGS. 12A to 12C, when the lock plate 8 is rotated clockwise, each locking portion (811, 821) moves in a direction approaching each projection (315, 335). Here, each latching part (811, 821) is formed according to the size of each projection part (315, 335), and is arranged according to the position of each projection part (315, 335). Therefore, when the lock plate 8 is rotated clockwise until the inclination of the lock plate 8 reaches a predetermined angle (angle U in FIGS. 14A and 14B), the protrusions (315, 335) are illustrated in FIG. 14C. As shown, it fits in each locking part (811, 821). Thereby, each projection part (315,335) will be in the state latched by each latching | locking part (811,821).

  When the protrusions (315, 335) are locked to the locking portions (811, 821), the locking portions (811, 821) are formed in accordance with the size of the protrusions (315, 335). Therefore, the female screw members (31, 33) are fixed so as not to swing in the y-axis direction. That is, in this state, the lock plate 8 is in a state where each female screw member (31, 33) is engaged with the male screw portion 41, in other words, each female screw member (31, 33) is in the first position. In this state, the female screw members (31, 33) are fixed so as not to swing. Accordingly, in the second embodiment, it is possible to prevent the clamping force between the fixed member 2 and the movable member 5 from loosening or the clamping device 101B from being detached from the fixed object 200 alone. can do.

  In this way, the state in which the lock plate 8 fixes the female screw members (31, 33) at the first position while the female screw members (31, 33) mesh with the male screw portion 41 in this manner. For convenience of explanation, this is referred to as a second meshing state. FIG. 14A illustrates the state of the lock plate and the female screw members (31, 33) in the second meshing state. FIG. 14B illustrates the state of each female screw member (31, 33) in the second meshing state. FIG. 14C illustrates the positional relationship between the lock plate 8 and the protrusions (315, 335) of the female screw members (31, 33) in the second meshing state.

  Thus, in the second embodiment, when the user operates the first operation member 6 as the operation in step S13 in FIG. 7, the second operation member 73 is indirectly operated by the action of the friction pad 9. . Accordingly, the female screw members (31, 33) can be fixed by the lock plate 8 while tightening the clamping device 101B so as not to be detached from the fixed object 200.

  Similarly, in the state where the clamp device 101B is attached to the fixed object 200, the distance between the first operation member 6 and the second operation member 73 is narrowed to such an extent that the friction pad 9 acts. Therefore, the user rotates the first operation member 6 counterclockwise to indirectly rotate the second operation member 73 counterclockwise via the friction pad 9, and thereby each female screw member by the lock plate 8. (31, 33) may be released.

  Therefore, in the second embodiment, the friction pad 9 is disposed between the first operation member 6 and the second operation member 73, so that the user can adjust the attachment strength in the adjustment stage of the user. The lock plate 8 can be operated without directly operating. That is, in 2nd Embodiment, a user's operation can be simplified by the effect | action of the friction pad 9, and the operativity of the clamp apparatus 101B can be improved.

  Regardless of the action of the friction pad 9, the user may directly rotate the second operation member 73 clockwise and fix each female screw member (31, 33) with the lock plate 8. Further, the user may directly rotate the second operation member 73 counterclockwise to release the fixing of the female screw members (31, 33) by the lock plate 8 as in step S21 of FIG. .

  Here, in the second embodiment, as illustrated in FIGS. 12A and 14A, the user rotates the lock plate 8 clockwise to change the state of the clamp device 101B from the first meshing state to the second meshing state. The meshing state can be achieved. The angle S that is the tilt of the lock plate 8 in the first meshing state may be referred to as a first angle, and the angle U that is the tilt of the lock plate 8 in the second meshing state may be referred to as a second angle.

  The second angle is the direction opposite to the direction in which the second operating member 73 is rotated about the axis in order to set each female screw member (31, 33) to the second position (rightward in the second embodiment). May be set to an angle larger than the first angle. That is, in the example of FIGS. 12A and 14A, the angle U only needs to be larger than the angle S in the right direction component.

  Therefore, in the example of FIGS. 12A and 14A, when the angle U and the angle S are both set to have a leftward component, the angle U is an absolute value smaller than the absolute value of the angle S. It may be set so as to be. Thus, by setting the inclination of the lock plate 8 at the first position and the second position, the operation directions of the second operation member 73 at these positions can be made opposite to each other.

  That is, the operation direction of the second operation member 73 for fixing each female screw member (31, 33) at the first position is the second operation for setting each female screw member (31, 33) to the second position. The direction of operation of the member 73 is opposite. Thereby, in 2nd Embodiment, it becomes possible to prevent the erroneous operation of the 2nd operation member 73 with respect to each position of each internal thread member (31, 33), and can improve the operativity of the clamp apparatus 101B. .

  In addition, in the procedure of step S21 and step S22 of FIG. 8, the clamp apparatus 101B will be in the said mesh release state. Further, in the procedure of step S23 of FIG. 8, the clamp device 101B is in the first meshing state. However, regardless of whether or not the friction pad 9 acts, the user directly rotates the second operation member 73 clockwise in each step of FIGS. 7 and 8 to change the state of the clamp device 101B. The first meshing state may be changed to the second meshing state. Similarly, the user may change the state of the clamp device 101B from the second engagement state to the first engagement state by directly rotating the second operation member 73 counterclockwise.

§3 Modifications One embodiment of the present invention has been described above. However, the present invention is not limited to each of the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

  For example, the number of the mesh release members 71 and 72 may be appropriately selected according to the embodiment. In each of the above embodiments, as illustrated in FIGS. 3, 4, 9, and 10, the two mesh release members (the first mesh release member 71 and the second mesh release member 72) serve as the shaft body 4. It is provided so as to be sandwiched, and is supported so as to be rotatable about the shaft body 4. However, the number of mesh release members is not limited to two, and may be three or more. In this case, the number of female screw members is provided according to the number of mesh release members.

  The first female screw member 31 and the second female screw member 33 are swung by being pressed by the first mesh release member 71 and the second mesh release member 72, respectively. The direction in which the second female screw member 33 moves is not particularly limited. For example, the first female screw is pressed by the first mesh release member 71 and the second mesh release member 72 in a direction horizontal to the direction of the elastic force of each of the first elastic member 32 and the second elastic member 34. Each of the member 31 and the second female screw member 33 may move in the horizontal direction.

  Further, the shape and size of each of the female screw members 31 and 33, the shape and size of each mesh release member 71, and the other members described above are not particularly limited as long as the above-described operation can be performed.

  Moreover, in each said embodiment, although the clamp apparatus was used for fixation of an infusion pump, the clamp apparatus of this invention is not limited to this, It can be used to fix various fixed things. .

  Further, in the second embodiment, the lock plate 8 has the female screw members (31, 33) formed by the first recesses (81, 82) and the projections (315, 335) of the lock plate 8. Fix in position. However, the method of fixing each female screw member (31, 33) in the first position may not be limited to such a method, and may be appropriately set according to the embodiment. Moreover, the shape of each recessed part (81, 82) and each projection part (315, 335) of the lock plate 8 may be determined as appropriate according to the embodiment, and may be different from the second embodiment. . For example, each recess (81, 82) of the lock plate 8 may be an opening penetrating from the first surface 84 to the second surface 85.

  In the second embodiment, the lock plate 8 is inclined at S degrees, U degrees, and T degrees in the first meshing state, the second meshing state, and the meshing release state, respectively. These angles may be appropriately determined according to the embodiment. For example, the S degree in the first meshing state may be 0 degree.

DESCRIPTION OF SYMBOLS 1 ... Base part, 11 ... 1st edge part, 12 ... 2nd edge part, 13 ... Side plate,
2 ... fixing member, 21 ... side plate,
3 ... Support mechanism,
30 ... Case, 301 ... First wall surface, 302 ... Second wall surface,
303 ... third wall surface, 304 ... fourth wall surface,
31 ... 1st female screw member, 311 ... Shaft part, 312 ... Recessed part, 313 ... Side part,
314 ... Female thread surface, 315 ... Projection,
32. First elastic member,
33 ... 2nd female screw member, 331 ... axial part, 332 ... hollow part, 333 ... side part,
334 ... Female thread surface, 335 ... Projection,
34 ... second elastic member,
35 ... 1st cover member, 36 ... 2nd cover member,
4 ... shaft body, 41 ... male screw portion, 43 ... first end portion, 44 ... second end portion,
5 ... movable member, 51 ... anti-rotation piece, 52 ... side plate,
6 ... 1st operation member,
7 ... mesh release mechanism, 71 ... first mesh release member, 72 ... second mesh release member,
73 ... second operation member, 74 ... ring member,
8 ... Lock plate (fixture),
81 ... 1st recessed part, 811 ... Locking part,
82 ... second recess, 821 ... locking portion,
83 ... groove, 84 ... first surface, 85 ... second surface,
9 ... friction pad,
DESCRIPTION OF SYMBOLS 100 ... Infusion pump apparatus, 101A ... Clamp apparatus, 101B ... Clamp apparatus,
102 ... infusion pump body,
200 ... Fixed object (clamp object)

Claims (12)

A base having a first end and a second end;
A fixing member disposed on the first end side of the base;
A support mechanism disposed on the second end side of the base so as to face the fixing member;
A shaft body that extends through the support mechanism and extends along the base, and is formed with a male screw portion that meshes with the support mechanism;
A movable member rotatably attached to the first end of the shaft body and sandwiching a clamp object with the fixed member;
A first operating member attached to the second end of the shaft and rotating the shaft about the axis;
A mesh release mechanism that is provided to act on the support mechanism and releases the mesh state between the support mechanism and the shaft body;
With
The support mechanism is
A plurality of female screw members that are divided around an axis of the shaft body and mesh with a male screw portion of the shaft body;
A plurality of elastic members that press the female screw members toward the male screw portion of the shaft body;
With
The mesh release mechanism is
A plurality of mesh release members configured to pass through the support mechanism and to press the female screw members;
A second operating member that is attached to an end of the mesh release member and applies a force to the mesh release member in a direction of pressing each female screw member;
With
Each of the female screw members is
A first position that is pressed by the elastic member and meshes with the male screw portion;
It is configured to be able to take a second position separated from the male screw portion by being pressed by the mesh release member against the elastic force of the elastic member.
Clamping device. At least two female screw members are provided;
At least two engagement release members are provided so as to sandwich the shaft body, and are supported rotatably around the shaft body. When an operation of rotating the second operation member around the shaft is performed, the shaft It is configured to rotate around the axis of the body and press each of the female screw members,
The clamping device according to claim 1. A fixing tool for fixing each female screw member at the first position when each female screw member takes the first position, wherein each of the mesh release members rotates about the axis of the shaft body. A fixing device capable of releasing the fixing of each female screw member according to
The clamping device according to claim 2. The fixture is configured to rotate in response to each of the mesh release members rotating around the axis of the shaft body.
The clamping device according to claim 3. The first direction in which the first operating member is rotated around the axis in order to move the movable member in the direction of the clamping object is the second operation in order to move the female screw members to the second position. Opposite to the second direction of rotating the member about its axis;
The fixing tool is configured to fix the female screw members at the first position when the second operating member is rotated by a predetermined angle in the first direction.
The clamping device according to claim 4. When the first operation member is further rotated in the first direction with the clamp object held between the movable member and the fixed member, the rotating force of the first operation member is transmitted. And a rotation transmitting member that rotates the second operating member in the first direction in which the first operating member rotates so that the female screw members are fixed at the first position by the fixing tool. ,
The clamping device according to claim 5. Each female screw member includes a protrusion extending in the direction of the fixture,
The fixture includes a locking portion that locks a protruding portion of each female screw member when each female screw member takes the first position.
The clamping device according to any one of claims 3 to 6. The first direction in which the first operating member is rotated around the axis in order to move the movable member in the direction of the clamping object is the second operation in order to move the female screw members to the second position. Opposite to the second direction of rotating the member about its axis,
The clamp apparatus of any one of Claim 2 to 7. Each of the female screw members is swingably supported in the support mechanism so as to be able to take the first position and the second position.
The clamp apparatus of any one of Claim 2 to 8. Each of the female screw members includes a recess for inserting the elastic member,
The hollow portion includes a side surface portion that contacts the elastic member inserted to determine the second position when each of the female screw members swings when the second operating member is operated,
The clamping device according to claim 9. The shaft body extends through the second operating member,
The second operation member is configured to be located in a range that can be operated by a hand holding the first operation member attached to the second end of the shaft body.
The clamp apparatus of any one of Claim 1 to 10. An infusion pump body for delivering the infusion,
The clamp device according to any one of claims 1 to 11, which is attached to the infusion pump main body and fixes the infusion pump main body to an object to be fixed;
Comprising
Infusion pump device.