WO2020137158A1

WO2020137158A1 - Tool

Info

Publication number: WO2020137158A1
Application number: PCT/JP2019/042991
Authority: WO
Inventors: 潤祐高田
Original assignee: 株式会社永木精機
Priority date: 2018-12-26
Filing date: 2019-11-01
Publication date: 2020-07-02
Also published as: CN215881316U; TW202027937A; KR102670262B1; JPWO2020137158A1; TWI801700B; JP7186463B2; KR20210105924A

Abstract

The present invention addresses the problem of providing a tool making it possible to stably transmit force to an action part (for example, a cutting part or a gripping part) of the tool. This tool is equipped with: a first member capable of turning about a first axis; a second member capable of turning about a second axis; and a state-change mechanism which changes the states of the first and second members from open states to closed states by turning the first member about the first axis and the second member about the second axis. The state-change mechanism comprises a threaded rod, a movable block that is screwedly engaged with the threaded rod; a first link member that couples the movable block and the first member; and a second link member that couples the movable block and the second member. The states of the first and second members are changed from open states to closed states as the movable block moves along a longitudinal axis of the threaded rod.

Description

tool

The present invention relates to a tool, particularly a tool for cutting or gripping an object.

A tool for cutting or gripping an object (for example, a cutting tool or a gripping tool) is known.

As a related technology, Patent Document 1 discloses an electric wire cutting tool. In the electric wire cutting tool described in Patent Document 1, the electric wire is cut by opening and closing a pair of operating rods.

With the electric wire cutting tool described in Patent Document 1, the electric wire is cut by applying a force to the pair of operating rods. In the state where the pair of operation rods are appropriately separated from each other, it is relatively easy to stably apply a large force to these operation rods, but in the state where the pair of operation rods are close to each other, It is relatively difficult to stably apply a large force to these operation rods. At the final stage when the electric wire is cut, the pair of operation rods are in a state of being close to each other, so that it is relatively difficult to stably apply a large force to the pair of operation rods at the final stage.

JP, 2014-100007, A

An object of the present invention is to provide a tool capable of stably transmitting a force to a working portion (for example, a cutting portion or a gripping portion) of the tool.

The present invention relates to a tool shown below.

(1) A first member that includes a first action portion that can contact an object that is a gripping object or a cutting object, and that is rotatable about a first axis;
A second member including a second action part capable of contacting the object and rotatable about a second axis;
The first member and the second member are rotated from the open state to the closed state by rotating the first member around the first axis and rotating the second member around the second axis. And a state change mechanism for changing the state to
The state change mechanism is
With a threaded rod,
A movable block screwed to the screw rod,
A first link member connecting the movable block and the first member;
A second link member connecting the movable block and the second member,
A tool that changes the state of the first member and the second member from the open state to the closed state by moving the movable block along the longitudinal axis of the screw rod.
(2) The tool according to (1), wherein the first shaft and the second shaft are coaxial.
(3) When the movable block moves in a direction approaching the first member and the second member, the states of the first member and the second member are changed from the open state to the closed state. The tool according to 1) or (2).
(4) The first link member has a first base end portion rotatably connected to the movable block,
The second link member has a second base end portion rotatably connected to the movable block,
In a front view, the first base end portion is located apart from the screw rod, and the second base end portion is located apart from the screw rod. (1) to (3) Tool described in one.
(5) Further comprising a base member rotatably supporting the screw rod,
The base member has a first engaging portion that engages with a fixed portion of the remote control tool,
The tool according to any one of (1) to (4), wherein a base end portion of the screw rod has a second engaging portion that engages with a movable portion of the remote control tool.
(6) A third member including a third action portion capable of contacting the object and rotatable about the first axis,
The tool according to any one of (1) to (5) above, further comprising: a fourth member that includes a fourth action portion that can come into contact with the object, and that is rotatable about the second axis.
(7) The first link member is connected to the movable block so as to be rotatable about a third axis,
The first link member is coupled to the first member so as to be rotatable about a fourth axis,
The second link member is connected to the movable block so as to be rotatable about a fifth axis,
The tool according to any one of (1) to (6), wherein the second link member is connected to the second member so as to be rotatable about a sixth axis.
(8) The first link member includes a first arm member and a second arm member,
The second link member includes a third arm member and a fourth arm member,
A base end portion of the first arm member is connected to the movable block so as to be rotatable about a third axis,
A distal end portion of the first arm member is coupled to a proximal end portion of the second arm member so as to be rotatable about a first coupling shaft,
A tip portion of the second arm member is coupled to the first member so as to be rotatable about a fourth axis,
A base end portion of the third arm member is connected to the movable block so as to be rotatable about a fifth axis,
A distal end portion of the third arm member is coupled to a proximal end portion of the fourth arm member so as to be rotatable about a second coupling shaft,
The tool according to any one of (1) to (6), wherein the tip end portion of the fourth arm member is connected to the second member so as to be rotatable about a sixth axis.
(9) Of the movable block, the first member, the second member, one or more arm members forming the first link member, and one or more arm members forming the second link member The tool according to any one of (1) to (8) above, wherein any 5 members of (1) are arranged in a pentagonal shape.

According to the present invention, it is possible to provide a tool capable of stably transmitting a force to a working portion (for example, a cutting portion or a grip portion) of the tool.

FIG. 1 is a schematic two-view drawing of a tool according to the first embodiment. FIG. 2 is a schematic rear view of the tool according to the first embodiment. FIG. 3 is a schematic two-view drawing of the tool according to the first embodiment. FIG. 4 is a schematic rear view of the tool according to the first embodiment. FIG. 5 is a schematic plan view schematically showing an example of the movable block. FIG. 6 is a schematic two-view drawing of a tool according to the second embodiment.

Hereinafter, the tool 1 in the embodiment will be described in detail with reference to the drawings. In this specification, members having the same type of function are denoted by the same or similar reference numerals. Further, repeated description may be omitted for members having the same or similar reference numerals.

(First embodiment)
A tool 1A according to the first embodiment will be described with reference to FIGS. 1 to 5. 1 and 3 are schematic two-sided views of a tool 1A according to the first embodiment. A schematic front view of the tool 1A is described on the left side of FIGS. 1 and 3, and a schematic side view of the tool 1A is described on the right sides of FIGS. 1 and 3. In the side view of the tool 1A, the description of the second link member 40 is omitted in order to avoid complication of the drawing. 2 and 4 are schematic rear views of the tool 1A according to the first embodiment. FIG. 5 is a schematic plan view schematically showing an example of the movable block 23.

In FIG. 1, the first member 11 and the second member 12 of the tool 1A are in an open state. The open state allows the cutting target object or the gripping target object to enter the space SP defined by the first acting portion 11a of the first member 11 and the second acting portion 12a of the second member 12. This means a state (or a state in which a cutting target object or a gripping target object can be taken out from the space SP defined by the first acting portion 11a and the second acting portion 12a). In the following description, the “cutting object” and the “holding object” are collectively referred to as the “object”. In other words, the “object” means a “cutting object or a grasping object”.

In FIG. 2, the first member 11 and the second member 12 of the tool 1A are in a closed state. The closed state means a state in which the object can be cut or grasped by the first acting portion 11a and the second acting portion 12a. When the tool 1A is a gripping tool, the closed state means a state in which the distance between the first acting portion 11a and the second acting portion 12a is smaller than that in the open state. Further, when the tool 1A is a cutting tool, the closed state means a first blade portion which is the first acting portion 11a in a front view (that is, when viewed in a direction along a first axis AX1 described later). It means a state where the second blade which is the second acting portion 12a is crossing or a state where the first blade and the second blade are in contact with each other.

After the object is placed in the space SP defined by the first acting portion 11a and the second acting portion 12a, the first member 11 and the second member 12 are changed from the open state to the closed state, The object is cut or grasped by the first acting portion 11a and the second acting portion 12a.

The tool 1A according to the first embodiment includes a first member 11, a second member 12, and a state changing mechanism 2.

The first member 11 includes a first acting portion 11a that can contact an object. When the tool 1A is a cutting tool, the first acting portion 11a is a first blade portion, and when the tool 1A is a grasping tool, the first acting portion 11a is a first grasping portion.

The first member 11 is rotatable around the first axis AX1. In the example illustrated in FIG. 1, the pin member P1 (first pin member) is arranged so as to pass through both the first member 11 and the second member 12, and the first member 11 corresponds to the pin member P1. It can rotate around. In other words, the central axis of the pin member P1 coincides with the first axis AX1. In addition, in the example illustrated in FIG. 1, the first member 11 is configured by one component (for example, one plate-shaped component), but the first member 11 is configured by an assembly of a plurality of components. May be.

The second member 12 includes a second acting portion 12a that can contact an object. When the tool 1A is a cutting tool, the second acting portion 12a is a second blade portion, and when the tool 1A is a grasping tool, the second acting portion 12a is a second grasping portion.

The second member 12 is rotatable around the second axis AX2. In the example shown in FIG. 1, the second member 12 is rotatable around the pin member P1. In other words, the central axis of the pin member P1 coincides with the second axis AX2. In the example shown in FIG. 1, the rotation axis of the first member 11 (first axis AX1) and the rotation axis of the second member 12 (second axis AX2) are coaxial, but the first axis AX1 The second axis AX2 and the second axis AX2 may be axes that are not coaxial and are parallel to each other. Further, in the example shown in FIG. 1, the second member 12 is composed of one component (for example, one plate-shaped component), but the second member 12 is composed of an assembly of a plurality of components. May be.

The state changing mechanism 2 rotates the first member 11 around the first axis AX1 and rotates the second member 12 around the second axis AX2, thereby moving the first member 11 and the second member 12 together. , Change the state from the open state to the closed state. In the process in which the first member 11 and the second member 12 are changed from the open state to the closed state, the object is sandwiched by the first acting portion 11a and the second acting portion 12a. Then, when the first member 11 and the second member 12 are in the closed state, the object is cut or grasped by the first acting portion 11a and the second acting portion 12a.

The state changing mechanism 2 includes a screw rod 21, a movable block 23 screwed to the screw rod 21, a first link member 30, and a second link member 40.

The screw rod 21 has a male screw on the outer peripheral surface. When the threaded rod 21 is rotated about the longitudinal axis AX of the threaded rod 21 in the first rotation direction (for example, counterclockwise), the movable block 23 moves in the first direction DR1. The first direction DR1 is, for example, a direction along the longitudinal direction of the screw rod 21, and is a direction from the base end portion of the screw rod 21 toward the first acting portion 11a and the second acting portion 12a. On the other hand, when the screw rod 21 is rotated about the longitudinal axis AX of the screw rod 21 in the second rotation direction (for example, clockwise), the movable block 23 moves in the second direction DR2. The second direction DR2 is, for example, a direction along the longitudinal direction of the screw rod 21, and is a direction from the first acting portion 11a and the second acting portion 12a toward the base end portion of the screw rod 21. The first rotation direction may be clockwise and the second rotation direction may be counterclockwise.

In the example shown in FIG. 1, the tip end of the screw rod 21 is connected to the pin support member 91 that supports the pin member P1 (first pin member) via the fixing member 22. In the example shown in FIG. 1, the tip end portion of the screw rod 21 is connected to the pin support member 91 in a rotatable state about the longitudinal axis AX of the screw rod 21. Therefore, the rotation of the screw rod 21 is not hindered by the pin support member 91.

The movable block 23 has a screw hole portion 23h that is screwed into the screw rod 21. A female screw is formed in the screw hole portion 23h. The movable block 23 is movable along the screw rod 21. The moving stroke of the movable block 23 is defined by the base end side stopper 24a and the tip end side stopper 24b. In the example shown in FIG. 1, the movable block 23 is composed of one component, but the movable block 23 may be composed of an assembly of a plurality of components.

The first link member 30 connects the movable block 23 and the first member 11.

In the example shown in FIG. 1, the first base end portion 30a of the first link member 30 is connected to the movable block 23 so as to be rotatable around the third axis AX3. More specifically, the pin member P3 (second pin member) is arranged so as to penetrate both the first link member 30 and the movable block 23, and the first link member 30 surrounds the pin member P3. Can be rotated.

In the example shown in FIG. 1, the tip end portion 30b of the first link member 30 is connected to the base end portion of the first member 11 so as to be rotatable around the fourth axis AX4. More specifically, the pin member P4 (third pin member) is arranged so as to penetrate both the first link member 30 and the first member 11, and the first link member 30 corresponds to the pin member P4. It can rotate around.

In the example illustrated in FIG. 1, the first link member 30 is configured by one component (for example, one plate-shaped component), but the first link member 30 is configured by an assembly of a plurality of components. May be.

The second link member 40 connects the movable block 23 and the second member 12.

In the example shown in FIG. 1, the second base end portion 40a of the second link member 40 is connected to the movable block 23 so as to be rotatable around the fifth axis AX5. More specifically, the pin member P5 (fourth pin member) is arranged so as to penetrate both the second link member 40 and the movable block 23, and the second link member 40 surrounds the pin member P5. Can be rotated.

In the example shown in FIG. 1, the tip end portion 40b of the second link member 40 is connected to the base end portion of the second member 12 so as to be rotatable about the sixth axis AX6. More specifically, the pin member P6 (fifth pin member) is arranged so as to pass through both the second link member 40 and the second member 12, and the second link member 40 is the pin member P6. It can rotate around.

In the example shown in FIG. 1, the second link member 40 is configured by one component (for example, one plate-shaped component), but the second link member 40 is configured by an assembly of a plurality of components. May be.

In the tool 1A according to the first embodiment, the movable block 23 moves along the longitudinal axis AX of the screw rod 21, whereby the states of the first member 11 and the second member 12 are in the open state (for example, the first state). Change from a state in which an object can enter the space SP defined by the action section 11a and the second action section 12a) to a second state (for example, a state in which the object can be cut or grasped) To be done. Therefore, even in the final stage of cutting or gripping, the operating force can be stably transmitted to the first member 11 and the second member 12 via the movable block 23.

The mechanism in which the object is cut or grasped by the first acting portion 11a of the first member 11 and the second acting portion 12a of the second member 12 will be described in more detail.

In the state shown in FIG. 1, rotate the screw rod 21 in the first rotation direction. The rotation of the threaded rod 21 is performed by, for example, operating the proximal end portion 21a of the threaded rod 21 (more specifically, rotating the proximal end portion 21a of the threaded rod 21 around the longitudinal axis AX of the threaded rod 21). Thing).

When the screw rod 21 rotates in the first rotation direction, the movable block 23 moves along the longitudinal axis AX of the screw rod 21. In the example illustrated in FIG. 1, the movable block 23 moves in the first direction DR1.

When the movable block 23 moves along the longitudinal axis AX of the screw rod 21, the distance between the movable block 23 and the first axis AX1 (or the second axis AX2) changes. In the example illustrated in FIG. 1, when the movable block 23 moves in the first direction DR1, the distance between the movable block 23 and the first axis AX1 decreases. When the distance between the movable block 23 and the first axis AX1 decreases, the fourth axis AX4 moves in a direction away from the screw rod 21. Similarly, when the movable block 23 moves in the first direction DR1, the distance between the movable block 23 and the second axis AX2 decreases. When the distance between the movable block 23 and the second axis AX2 decreases, the sixth axis AX6 moves in a direction away from the screw rod 21.

When the fourth axis AX4 moves in a direction away from the screw rod 21, the base end portion of the first link member 30 rotates about the third axis AX3, and the first member 11 rotates about the first axis AX1. Move. In this way, the first acting portion 11a of the first member 11 moves in a direction approaching the second acting portion 12a. When the sixth axis AX6 moves in a direction away from the screw rod 21, the base end portion of the second link member 40 rotates about the fifth axis AX5, and the second member 12 rotates about the second axis AX2. Rotate. In this way, the second acting portion 12a of the second member 12 moves in a direction approaching the first acting portion 11a.

When the first acting portion 11a and the second acting portion 12a approach each other, the object is cut or grasped by the first acting portion 11a and the second acting portion 12a.

In the example shown in FIGS. 1 and 2, when the movable block 23 moves in the direction approaching the first member 11 and the second member 12 (in other words, the first direction DR1), the first member 11 and the second member The state 12 is changed from the open state to the closed state. In other words, the force that pushes the movable block 23 toward the tip side is used for cutting or grasping the object by the first acting portion 11a and the second acting portion 12a. Therefore, the force transmission mechanism to the action parts (11a, 12a) is simplified, and the movement of the movable block 23 is effectively converted into a cutting force for cutting the object or a grasping force for gripping the object. ..

In the example shown in FIG. 2, when the first member 11 and the second member 12 are in the closed state, a straight line L1 connecting the fourth axis AX4 and the first axis AX1 in the front view and a sixth axis AX6 in the front view. The angle β formed between the second axis AX2 and the straight line L2 connecting the second axis AX2 (in FIG. 2, the second axis AX2 and the first axis AX1 are coaxial) is relatively large. In this case, the operating force can be more stably transmitted to the first member 11 and the second member 12 in the final stage of cutting or grasping. The above-mentioned angle β is, for example, 0° or more and 180° or less, and more preferably 120° or more and 180° or less.

An example of an optional additional configuration that can be adopted in the first embodiment will be described with reference to FIGS. 3 and 4.

(Arrangement of the first axis AX1 to the sixth axis AX6)
In the example shown in FIGS. 3 and 4, the first axis AX1 is greater than the third axis AX3 and the fourth axis AX4 regardless of whether the first member 11 and the second member 12 are open or closed. Is also disposed on the distal side (first direction DR1 side). In addition, the first axis AX1 is arranged closer to the longitudinal axis AX of the screw rod 21 than the third axis AX3 and the fourth axis AX4. Further, regardless of whether the first member 11 and the second member 12 are in the open state or in the closed state, the second axis AX2 is distal to the fifth axis AX5 and the sixth axis AX6 (first direction DR1). And the second axis AX2 is located closer to the longitudinal axis AX of the screw rod 21 than the fifth axis AX5 and the sixth axis AX6.

In the example described in FIGS. 3 and 4, the third axis AX3 is closer to the base end side than the fourth axis AX4 (whether the first member 11 and the second member 12 are in the open state or the closed state). It is arranged in the second direction DR2 side). In addition, the third axis AX3 is arranged at a position closer to the longitudinal axis AX of the screw rod 21 than the fourth axis AX4. Further, the fifth axis AX5 is arranged closer to the base end side (the second direction DR2 side) than the sixth axis AX6 regardless of whether the first member 11 and the second member 12 are in the open state or the closed state. The fifth axis AX5 is arranged closer to the longitudinal axis AX of the screw rod 21 than the sixth axis AX6.

(Shape formed by the first link member 30, the second link member 40, etc.)
In the example illustrated in FIGS. 3 and 4, the movable block 23, the first link member 30, the first member 11, the second member 12, and the second link member 40 are arranged in a pentagonal shape. The movable block 23 corresponds to the base of the pentagon. When the movable block 23 moves in the first direction DR1, a pentagonal width formed by the movable block 23, the first link member 30, the first member 11, the second member 12, and the second link member 40 ( The length in the direction perpendicular to the longitudinal axis AX) increases. As the width of the pentagonal shape widens, in other words, the distance between the fourth axis AX4 and the sixth axis AX6 increases, the force applied to the movable block 23 is increased by the first link member 30 and the second link. It is effectively transmitted to the first member 11 and the second member 12 via the member 40.

In the example illustrated in FIGS. 3 and 4, the base end portion of the first link member 30 (that is, the first base end portion 30a rotatably connected to the movable block 23) in a front view or a rear view. Is at a position separated from the screw rod 21. Further, in a front view or a rear view, the base end portion of the second link member 40 (that is, the second base end portion 40a rotatably connected to the movable block 23) is at a position separated from the screw rod 21. It is in. In this case, the length of the link member (30, 40) is shortened as compared with the case where the first base end portion 30a and the second base end portion 40a overlap the screw rod 21 in a front view or a rear view. In addition, the moving stroke of the movable block 23 that controls the opening/closing operation can be reduced.

(Base member 50)
In the example illustrated in FIG. 3, the tool 1</b>A includes a base member 50 that supports the screw rod 21. The base member 50 supports the threaded rod 21 so that the threaded rod 21 can rotate about the longitudinal axis AX. In the example shown in FIG. 3, the screw rod 21 is supported by the base member 50 and the pin support member 91.

The base member 50 has a first engaging portion 51 that engages with the fixed portion of the remote control tool. In the example shown in FIG. 3, the first engagement portion 51 is an engagement groove. By connecting the base member 50 to the remote control tool, the tool 1A can be used as a tool for cutting or gripping an object separated from the operator. The tool 1A connected to the remote control tool may be used as a tool for cutting or gripping the overhead wire. The length of the remote control tool is appropriately selected according to the distance between the operator and the object. Therefore, the length of the remote control tool is arbitrary.

In the example shown in FIG. 3, the base end portion 21a of the screw rod 21 has a second engagement portion 52 that engages with the movable portion of the remote control tool. In the example shown in FIG. 3, at least a part of the second engaging portion 52 is arranged in the space inside the base member 50. In the example shown in FIG. 3, the cross-sectional shape of the second engagement portion 52 (cross-sectional shape in a plane perpendicular to the longitudinal axis AX of the screw rod 21) is a polygonal shape (for example, a hexagonal shape). However, the cross-sectional shape of the second engaging portion 52 is not limited to the polygonal shape.

Next, an example of a method of operating the tool 1A using a remote control tool will be described. As a preparation step, the fixed part of the remote control tool is engaged with the first engagement part 51, and the movable part of the remote control tool is engaged with the second engagement part 52. Then, the remote control tool is operated, and the movable part of the remote control tool moves (for example, rotates around the longitudinal axis AX of the screw rod 21). When the movable part of the remote control tool moves, the second engagement part 52 connected to the movable part moves (for example, rotates about the longitudinal axis AX of the screw rod 21). When the second engaging portion 52 moves, the screw rod 21 rotates about the longitudinal axis AX of the screw rod 21. Since the mechanism by which the rotation of the screw rod 21 is converted into the opening/closing motion of the first member 11 and the second member 12 has been described, the repeated description of the mechanism will be omitted.

In the example shown in FIG. 3, the tool 1A includes a base member 50 that supports the screw rod 21, and the base member 50 has a first engaging portion 51 that engages with a fixed portion of the remote control tool. Therefore, the tool 1A can be used as a tool for cutting or gripping an object separated from the operator. Further, the tool 1A includes a first engaging portion 51 that engages with a fixed portion of the remote control tool, and a second engaging portion 52 that engages with a movable portion of the remote control tool. Therefore, the tool 1A supported via the first engaging portion 51 can be stably operated via the second engaging portion 52.

(Third member 13 and fourth member 14)
In the example illustrated in FIGS. 3 and 4, the tool 1A includes a third member 13 and a fourth member 14 in addition to the first member 11 and the second member 12. The 3rd member 13 has the 3rd action part 13a which can contact the object which is a grasping object or a cutting object, and the 4th member 14 can contact the object which is a grasping object or a cutting object. It has the 4th action part 14a.

In the example described in FIGS. 3 and 4, the first acting portion 11a is the first blade portion, the second acting portion 12a is the second blade portion, and the third acting portion 13a is the first grip portion. The fourth acting portion 14a is the second grip portion. In this case, the object can be cut by the first acting portion 11a and the second acting portion 12a while the object is gripped by the third acting portion 13a and the fourth acting portion 14a. Therefore, the position shift of the object at the time of cutting is suppressed. Alternatively, the first acting portion 11a and the second acting portion 12a may be gripping portions, and the third acting portion 13a and the fourth acting portion 14a may be cutting portions.

In the example shown in FIGS. 3 and 4, the third member 13 is rotatable about the first axis AX1. More specifically, the third member 13 is rotatably supported by the pin member P1. Since the first member 11 and the third member 13 are rotatable around a common axis (first axis AX1), cooperation between the first member 11 and the third member 13 (cooperation between gripping operation and cutting operation) ) Is done smoothly.

In the example shown in FIGS. 3 and 4, the fourth member 14 is rotatable about the second axis AX2. More specifically, the fourth member 14 is rotatably supported by the pin member P1. Since the second member 12 and the fourth member 14 are rotatable about a common axis (second axis AX2), cooperation between the second member 12 and the fourth member 14 (cooperation between gripping operation and cutting operation) ) Is done smoothly. The first axis AX1 and the second axis AX2 may or may not be coaxial.

The tool 1A is a biasing member that biases the third member 13 (more specifically, the third acting portion 13a) and the fourth member 14 (more specifically, the fourth acting portion 14a) in the closing direction. 92 may be provided. The biasing member 92 is, for example, a torsion coil spring whose first end contacts the third member 13 and whose second end contacts the fourth member 14.

When the tool 1A includes the biasing member 92, the target object can be stably gripped by the third acting portion 13a and the fourth acting portion 14a by using the biasing force of the biasing member 92. Further, when the object is grasped by using the urging force of the urging member 92, an excessive grasping force does not act on the object. Therefore, the third action part 13a and the fourth action part 14a do not damage the object by gripping the object.

In the example illustrated in FIGS. 3 and 4, the third member 13 includes the first operation unit 131 operated by the first member 11. Further, the fourth member 14 includes a second operation portion 141 operated by the second member 12.

When the first member 11 and the second member 12 are changed from the closed state to the open state, the first member 11 presses the first operation portion 131 and the second member 12 presses the second operation portion 141. .. Thus, the third member 13 (more specifically, the third acting portion 13a) and the fourth member 14 (more specifically, the fourth acting portion 14a) resist the biasing force of the biasing member 92. , The state is changed from the closed state to the open state.

In the examples shown in FIGS. 3 and 4, it is the arm portion 11b of the first member 11 (the portion closer to the base end side than the first axis AX1) that presses the first operating portion 131, and the second It is the arm portion 12b of the second member 12 (the portion closer to the base end side than the second axis AX2) that presses the operation portion 141.

(Movable block 23)
An example of the movable block 23 will be described in more detail with reference to FIG.

The movable block 23 has a screw hole portion 23h in the central region in a plan view (in other words, viewed in the direction along the longitudinal axis AX of the screw rod 21). In addition, the movable block 23 has a first recess 231 (more specifically, a first receiving groove) that receives the first base end portion 30 a of the first link member 30 and a second portion of the second link member 40 in plan view. It has a second recess 232 (more specifically, a second receiving groove) that receives the two base end portions 40a.

In the example shown in FIG. 5, the first recess 231 and the second recess 232 are arranged in the edge region of the movable block 23. Further, in the example illustrated in FIG. 5, the first recess 231 and the second recess 232 are arranged so as to sandwich the screw hole portion 23h. As shown in FIG. 5, the first recess 231 may be axially aligned with the second recess 232 with respect to the screw hole 23h. In this case, the force acting on the movable block 23 is almost evenly transmitted to the first link member 30 arranged in the first recess 231 and the second link member 40 arranged in the second recess 232. In the example shown in FIG. 5, in plan view (in other words, viewed in the direction along the longitudinal axis AX of the screw rod 21), the center C1 of the first recess 231 and the center C2 of the second recess 232 are The straight line L3 passing through is inclined with respect to the straight line L4 parallel to the width direction of the movable block 23. Alternatively, a straight line L3 passing through the center C1 of the first recess 231 and the center C2 of the second recess 232 may be parallel to the straight line L4 parallel to the width direction of the movable block 23.

In the example shown in FIG. 5, the movable block 23 is formed with a first receiving hole 233 for receiving the pin member P3 and a second receiving hole 234 for receiving the pin member P5. The first link member 30 is rotatably supported by the pin member P3 by inserting the pin member P3 into the first receiving hole 233 in a state where the first link member 30 is arranged in the first recess 231. .. Further, the second link member 40 is rotatably supported by the pin member P5 by inserting the pin member P5 into the second receiving hole 234 in a state where the second link member 40 is arranged in the second recess 232. To be done.

In the example shown in FIG. 5, the extending direction of the first receiving hole 233 is perpendicular to the extending direction of the screw hole portion 23h. The extending direction of the second receiving hole 234 is parallel to the extending direction of the first receiving hole 233. The distance between the first receiving hole 233 and the screw hole portion 23h is equal to the distance between the second receiving hole 234 and the screw hole portion 23h.

(Second embodiment)
A tool 1B according to the second embodiment will be described with reference to FIG. FIG. 6 is a schematic two-side view of the tool 1B according to the second embodiment. A schematic front view of the tool 1B is shown on the left side of FIG. 6, and a schematic side view of the tool 1B is shown on the right side of FIG.

In the tool 1B according to the second embodiment, the first link member 30 includes a first arm member 31 and a second arm member 32, and the second link member 40 includes a third arm member 41 and a fourth arm member 42. Including.

In the second embodiment, points different from the first embodiment will be mainly described, and repetitive description of the items already described in the first embodiment will be omitted. Therefore, needless to say, the matters described in the first embodiment can be adopted in the second embodiment even if they are not explicitly described in the second embodiment.

Like the tool 1A in the first embodiment, the tool 1B in the second embodiment includes a first member 11, a second member 12, and a state changing mechanism 2, and the state changing mechanism 2 uses a screw. It includes a rod 21, a movable block 23, a first link member 30, and a second link member 40.

In the example shown in FIG. 6, the first axis AX1 (or the pin member P1) is arranged between the first member 11 and the second member 12. Further, the first member 11 and the second member 12 are connected via a connecting member 93. The pin member P7 is inserted through the connecting member 93 and the first member 11, and the first member 11 is rotatable with respect to the connecting member 93 about the central axis of the pin member P7. Further, the pin member P8 is inserted through the connecting member 93 and the second member 12, and the second member 12 is rotatable with respect to the connecting member 93 around the central axis of the pin member P8.

In the example shown in FIG. 6, the first axis AX1 is arranged between the first member 11 and the second member 12, and the first member 11 and the second member 12 are connected via the connecting member 93. Has been done. Alternatively, as in the example shown in FIG. 1, the first axis AX1 is arranged so as to penetrate the first member 11 and the second member 12, and the first member 11 and the second member 12 are pin members. It may be connected via P1. On the contrary, the connection structure between the first member 11 and the second member 12 illustrated in FIG. 6 may be adopted in the first embodiment.

In the example illustrated in FIG. 6, the first acting portion 11a of the first member 11 is the first grip portion, and the second acting portion 12a of the second member 12 is the second grip portion. Alternatively, the first acting portion 11a may be the first blade portion and the second acting portion 12a may be the second blade portion.

In the second embodiment, the screw rod 21 and the movable block 23 may have the same configuration as in the first embodiment. Of course, any improvements may be added to the shapes or structures of the screw rod 21 and the movable block 23.

In the example shown in FIG. 6, similarly to the example shown in FIG. 1, the tip end portion of the screw rod 21 is connected to the pin support member 91 via the fixing member 22. However, in contrast to the pin member supported by the pin support member 91 being the pin member P1 (first pin member) in the example shown in FIG. 1, in the example shown in FIG. 6-pin member).

The first link member 30 includes a first arm member 31 and a second arm member 32. In the example shown in FIG. 6, the base end portion of the first arm member 31 is connected to the movable block 23 so as to be rotatable around the third axis AX3 (more specifically, the pin member P3). There is. Further, the tip end portion of the first arm member 31 is connected to the base end portion of the second arm member 32 so as to be rotatable around the first connecting shaft AC1 (more specifically, the pin member P10). There is. Further, the tip portion of the second arm member 32 is connected to the first member 11 so as to be rotatable around the fourth axis AX4 (more specifically, the pin member P4).

The second link member 40 includes a third arm member 41 and a fourth arm member 42. In the example shown in FIG. 6, the base end portion of the third arm member 41 is connected to the movable block 23 so as to be rotatable around the fifth axis AX5 (more specifically, the pin member P5). There is. The tip end of the third arm member 41 is connected to the base end of the fourth arm member 42 so as to be rotatable around the second connecting shaft AC2 (more specifically, the pin member P11). There is. Further, the tip portion of the fourth arm member 42 is connected to the second member 12 so as to be rotatable around the sixth axis AX6 (more specifically, the pin member P6).

With the above configuration, the force acting on the movable block 23 is transmitted to the first member 11 via the first link member 30 (more specifically, the first arm member 31 and the second arm member 32). .. Similarly, the force acting on the movable block 23 is transmitted to the second member 12 via the second link member 40 (more specifically, the third arm member 41 and the fourth arm member 42).

In the example shown in FIG. 6, the second arm member 32 is rotatable about the third connecting shaft AC3, and the fourth arm member 42 is rotatable about the third connecting shaft AC3. More specifically, an intermediate portion of the second arm member 32 (a portion between the first connecting shaft AC1 and the fourth shaft AX4) and an intermediate portion of the fourth arm member 42 (the second connecting shaft AC2 and the second connecting shaft AC2 The portion between 6 axes AX6) is pivotally supported by the pin member P9 passing through the third connecting shaft AC3. Further, the second arm member 32 and the fourth arm member 42 cross each other on the third connecting shaft AC3.

In the second embodiment, a mechanism in which an object is cut or grasped by the first acting portion 11a of the first member 11 and the second acting portion 12a of the second member 12 will be described in more detail.

In the state shown in FIG. 6, the screw rod 21 is rotated in the first rotation direction. The rotation of the threaded rod 21 is performed by, for example, operating the proximal end portion 21a of the threaded rod (more specifically, rotating the proximal end portion 21a of the threaded rod 21 around the longitudinal axis AX of the threaded rod 21). ).

When the screw rod 21 rotates in the first rotation direction, the movable block 23 moves along the longitudinal axis AX of the screw rod 21. In the example described in FIG. 6, the movable block 23 moves in the first direction DR1.

When the movable block 23 moves in the first direction DR1, the distance between the movable block 23 and the third connecting shaft AC3 changes (more specifically, between the movable block 23 and the third connecting shaft AC3. The distance becomes shorter.). Then, when the distance between the movable block 23 and the third connecting shaft AC3 becomes short, the first connecting shaft AC1 (and the second connecting shaft AC2) moves in a direction away from the screw rod 21.

When the first connecting shaft AC1 moves away from the screw rod 21, the base end of the first arm member 31 rotates about the third shaft AX3, and the second arm member 32 moves the third connecting shaft AC3. Rotate around. When the second arm member 32 rotates around the third connecting shaft AC3 and the tip end portion of the second arm member 32 moves in a direction away from the longitudinal axis AX of the screw rod 21, the first member 11 moves. Rotate around AX1. In this way, the first acting portion 11a of the first member 11 moves in a direction approaching the second acting portion 12a.

When the second connecting shaft AC2 moves away from the screw rod 21, the base end portion of the third arm member 41 rotates about the fifth shaft AX5, and the fourth arm member 42 connects the third connecting member AC3. Rotate around the axis AC3. When the fourth arm member 42 rotates around the third connecting shaft AC3 and the tip end of the fourth arm member 42 moves in the direction away from the longitudinal axis AX of the screw rod 21, the second member 12 moves. Rotate around AX1. In this way, the second acting portion 12a of the second member 12 moves in a direction approaching the first acting portion 11a.

When the first acting portion 11a and the second acting portion 12a come close to each other, the object is grasped or cut by the first acting portion 11a and the second acting portion 12a.

The tool 1B in the second embodiment has the same effect as the tool 1A in the first embodiment. In the example illustrated in FIG. 6, each link member (30, 40) includes two arm members, but the number of arm members included in each link member may be three or more. .. Further, in the example shown in FIG. 6, the second arm member 32 and the fourth arm member 42 are arranged so as to cross each other, but two members other than the second arm member 32 and the fourth arm member 42 are provided. May be arranged to cross each other. For example, the first member 11 and the second member 12 may be arranged so as to be crucible to each other.

In the example shown in FIG. 6, the movable block 23, the first arm member 31, the second arm member 32, the third arm member 41, and the fourth arm member 42 are arranged in a pentagonal shape. However, the members arranged in the pentagonal shape are not limited to the movable block 23, the first arm member 31, the second arm member 32, the third arm member 41, and the fourth arm member 42. Any one of the movable block 23, the first member 11, the second member 12, one or more arm members forming the first link member 30, and one or more arm members forming the second link member 40. The five members may be arranged in a pentagonal shape.

The present invention is not limited to the above-described embodiments, and it is apparent that each embodiment can be appropriately modified or changed within the scope of the technical idea of the present invention. Further, arbitrary constituent elements used in each embodiment can be combined with other embodiments, and arbitrary constituent elements can be omitted in each embodiment.

By using the tool of the present invention, it becomes possible to stably transmit the force to the working portion of the tool. Therefore, it is useful for a trader who works using a tool such as a gripping tool or a cutting tool, and a manufacturer who manufactures a tool such as a gripping tool or a cutting tool.

1, 1A, 1B... Tool, 2... State changing mechanism, 11... First member, 11a... First acting portion, 11b... Arm portion, 12... Second member, 12a... Second acting portion, 12b... Arm portion, 13... 3rd member, 13a... 3rd action part, 14... 4th member, 14a... 4th action part, 21... Screw rod, 21a... Base end part, 22... Fixed member, 23... Movable block, 23h... Screw Hole, 24a... Base end stopper, 24b... Tip stopper, 30... First link member, 30a... First base end, 30b... Tip portion, 31... First arm member, 32... Second arm member, 40... 2nd link member, 40a... 2nd base end part, 40b... Tip part, 41... 3rd arm member, 42... 4th arm member, 50... Base member, 51... 1st engaging part, 52... 2 engagement part, 91... Pin support member, 92... Energizing member, 93... Connection member, 131... 1st operation part, 141... 2nd operation part, 231... 1st recessed part, 232... 2nd recessed part, 233... First receiving hole, 234... Second receiving hole, AC1... First connecting shaft, AC2... Second connecting shaft, AC3... Third connecting shaft, AX... Longitudinal axis, AX1... First shaft, AX2... Second shaft , AX3... Third axis, AX4... Fourth axis, AX5... Fifth axis, AX6... Sixth axis, P1, P3 to P11... Pin member, SP... Space

Claims

A first member that includes a first action portion that can contact an object that is a grasping object or a cutting object, and that is rotatable about a first axis;
A second member including a second action part capable of contacting the object and rotatable about a second axis;
The first member and the second member are rotated from the open state to the closed state by rotating the first member around the first axis and rotating the second member around the second axis. And a state change mechanism for changing the state to
The state change mechanism is
With a threaded rod,
A movable block screwed to the screw rod,
A first link member connecting the movable block and the first member;
A second link member connecting the movable block and the second member,
A tool that changes the state of the first member and the second member from the open state to the closed state by moving the movable block along the longitudinal axis of the screw rod.
The tool according to claim 1, wherein the first axis and the second axis are coaxial.
The state of the first member and the second member is changed from the open state to the closed state when the movable block moves in a direction approaching the first member and the second member. Tools.
The state of the first member and the second member is changed from the open state to the closed state when the movable block moves in a direction approaching the first member and the second member. Tools.
The first link member has a first base end portion rotatably connected to the movable block,
The second link member has a second base end portion rotatably connected to the movable block,
In front view, the first base end portion is located at a position apart from the screw rod, and the second base end portion is located at a position separated from the screw rod. The listed tool.
Further comprising a base member rotatably supporting the screw rod,
The base member has a first engaging portion that engages with a fixed portion of the remote control tool,
The tool according to any one of claims 1 to 4, wherein a proximal end portion of the screw rod has a second engaging portion that engages with a movable portion of the remote control tool.
A third member including a third action part capable of contacting the object and rotatable about the first axis;
The tool according to any one of claims 1 to 4, further comprising: a fourth member that is capable of contacting the object and that is rotatable about the second axis.
The first link member is connected to the movable block so as to be rotatable about a third axis,
The first link member is coupled to the first member so as to be rotatable about a fourth axis,
The second link member is connected to the movable block so as to be rotatable about a fifth axis,
The tool according to any one of claims 1 to 4, wherein the second link member is coupled to the second member so as to be rotatable about a sixth axis.
The first link member includes a first arm member and a second arm member,
The second link member includes a third arm member and a fourth arm member,
A base end portion of the first arm member is connected to the movable block so as to be rotatable about a third axis,
A tip end portion of the first arm member is connected to a base end portion of the second arm member so as to be rotatable about a first connecting shaft,
A tip portion of the second arm member is coupled to the first member so as to be rotatable about a fourth axis,
A base end portion of the third arm member is connected to the movable block so as to be rotatable about a fifth axis,
A distal end portion of the third arm member is coupled to a proximal end portion of the fourth arm member so as to be rotatable about a second coupling shaft,
The tool according to claim 1, wherein a tip end portion of the fourth arm member is connected to the second member so as to be rotatable about a sixth axis.
Any one of the movable block, the first member, the second member, one or more arm members forming the first link member, and one or more arm members forming the second link member The tool according to claim 1, wherein the five members are arranged in a pentagonal shape.