Wire gripper

Abstract

Provided is a wire gripper in which the distance between a grip wire body on the upper side and a grip wire body on the lower side does not change unexpectedly.　A wire gripper 10 comprises: a fixed gripping body 20 having a linear body pressing portion 30; a movable gripping body 50 having a linear body holding portion 60 that moves toward the linear body pressing portion of the fixed gripping body 20; and an operation member 130 connected to the movable gripping body 50 via a distance adjustment mechanism 12 and a link mechanism 18. The link mechanism 18 is configured by link members 70, 100 connected among the fixed gripping body, the movable gripping body, and the operation member. The distance adjustment mechanism 12 adjusts the distance between the linear body pressing portion of the fixed gripping body and the linear body holding portion 60 of the movable gripping body 50 by a guide mechanism 14 configured so as to move the movable gripping body by moving the link member 70. The distance adjustment mechanism 12 has a movement restriction mechanism 16 that restricts the movement of the movable gripping body in order to keep the distance constant between the linear body pressing portion 30 of the fixed gripping body and the linear body holding portion 60 of the movable gripping body.

Description

Technical Field

[0001] The present invention relates to a wire gripper, and more particularly to a wire gripper that grips a wire in the process of pulling the wire when performing, for example, a work of separating a coated wire.

Background Art

[0002] When performing a work of separating an electric wire, a live wire sorting tool is used to cause a slack in the portion where the electric wire is pulled and separated. Generally, such a live wire sorting tool is configured by connecting wire grippers for gripping the electric wire to both ends of a telescopic shaft. By using such a live wire sorting tool, gripping the electric wire with the wire grippers at both ends and contracting the central telescopic shaft, the electric wire between the two wire grippers can be loosened in an arch shape. As an instrument for gripping or holding such an electric wire, a wire gripper is known (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the wire gripper disclosed in Cited Document 1, the holding portion (head) of the substantially spherical tightening portion located at the tip of the slider (eye-ring tightening portion) of the tightening portion is in contact with the substantially central portion of the lower surface of the first link member (second link piece). By rotating the eye-ring tightening portion and rotating the first link member in contact with the head of the tightening portion, the movable gripping body (second wire gripping body) is moved to the side of the fixed gripping body (first wire gripping body), and the space between the wire body pressing portion (first gripping groove) of the fixed gripping body and the wire body holding portion (second gripping groove) of the movable gripping body is closed to grip the coated electric wire. However, this wire gripper DeviceAn accidental force may be applied to the link or the operating arm, which may change the distance between the upper gripping body and the lower gripping body. Therefore, the main object of the present invention is to provide a gripping device in which the distance between the upper gripping body and the lower gripping body does not accidentally change.

Means for Solving the Problems

[0005] The gripping device according to the present invention comprises a fixed gripping body having a linear body pressing portion, a movable gripping body having a linear body holding portion that moves toward the linear body pressing portion of the fixed gripping body, and an operating member connected to the movable gripping body via a distance adjusting mechanism and a link mechanism, and is a gripping device characterized in that the distance adjusting mechanism is a mechanism for adjusting the distance between the linear body pressing portion of the fixed gripping body and the linear body holding portion of the movable gripping body by a guiding mechanism, and has a movement restricting mechanism for restricting the movement of the movable gripping body in order to keep the distance between the linear body pressing portion of the fixed gripping body and the linear body holding portion of the movable gripping body constant. The gripping device according to the present invention is characterized in that the distance adjusting mechanism includes a link mechanism for moving the movable gripping body, a guiding portion protruding toward the side pulling the operating member is provided at the central portion or the vicinity in the longitudinal direction of the link member constituting the link mechanism, and it is preferable that the movement restricting mechanism is constituted by a restricting portion constituting a guiding mechanism installed between the guiding portion and the operating member. The gripping device according to the present invention is characterized in that a path portion is formed by drilling the guiding portion in accordance with the movement locus of the link member for moving the movable gripping body, and a guiding edge is formed around the path portion, and the restricting portion constituting the distance adjusting mechanism is movably attached to the operating member in the vicinity of the guiding portion. The restricting part is provided with an engaging guide part constituting a movement restricting mechanism in a region engaging with a guiding edge formed around the narrow path part, and a stopping part constituting a movement restricting mechanism is provided in a region thereof engaging with the narrow path part. The guide part is preferably configured to move the link member to the pulling side and the pushing-back side of the operating member as the restricting part moves, and to stop as the restricting part stops. The wire gripper according to the present invention A slider is installed between the guide part protruding from the link member connected to the movable gripper and the operating member of the restricting part. The slider is attached to the operating member in the vicinity of one end thereof, and the slider is provided so as to be movable in the direction of the movable gripper and the operating member. The slider includes an engaging guide part at the other end that engages with a guiding edge formed around the narrow path part of the guide part. The restricting part is preferably configured to fix the first link member at a certain position by stopping the engaging guide part engaged with the guide part in a state where the movable gripper is closed and / or opened. The wire gripper according to the present invention A slider is installed between the guide part protruding from the link member connected to the movable gripper and the operating member of the restricting part. The slider is attached to the operating member in the vicinity of one end thereof, and the slider is provided so as to be movable in the direction of the movable gripper and the operating member. The slider includes a pin-shaped stopping part at the other end that engages with the narrow path part of the guide part. The stopping part preferably forms a movement restricting mechanism that restricts the movement of the link member by engaging with the narrow path part when the movable gripper is opened and / or forms a movement restricting mechanism that restricts the movement of the link member by engaging with the narrow path part when the movable gripper is closed. The wire gripper according to the present invention The guiding portion is provided with a guiding protrusion having a semi-circular arc-shaped guiding edge that extends from the pulling side to the pushing-back side of the operating member along the locus of movement of the link member that moves the movable gripping body, The guiding edge of the guiding portion constitutes a gap adjustment mechanism and is formed at the lower edge of the guiding protrusion surrounding the path portion of the guiding portion. Along with the movement of the engaging guiding portion of the restricting portion, it is formed to move along the semi-circular arc-shaped locus from the pulling side to the pushing-back side of the operating member or from the pushing-back side to the pulling side of the operating member. When the restricting portion changes the movable gripping body from the closed state to the open state, the engaging guiding portion located at the dead end portion on the pushing-back side of the path portion constituting the guiding portion or in the vicinity of the guiding edge thereof moves to the pulling side, and / or when the movable gripping body changes from the open state to the closed state, the engaging guiding portion located at the guiding edge on the side away from the pulling side from the dead end portion of the path portion constituting the guiding portion moves to the pushing-back side. It is preferably configured as such.

Advantages of the Invention

[0006] According to the present invention, it is possible to provide a gripping device in which the distance between the upper gripping wire body and the lower gripping wire body does not change inadvertently.

[0007] The above objects, other objects, features, and advantages of the present invention will become more apparent from the following description of the embodiments for carrying out the invention with reference to the drawings.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2A

Figure 2B

Figure 3

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Figure 4B

Figure 4C

Figure 4D

Figure 4E

Figure 5

Figure 6A

Figure 6B

Figure 7

Figure 8A

Figure 8B

Figure 8C

Figure 9

Embodiments for Carrying Out the Invention

[0009] (Direction) In this specification, as shown in FIG. 2, the side where the operating member is pulled is referred to as the pulling side or the right / right side, and the side where the operating member is pushed back is referred to as the pushing-back side or the left / left side. In this specification, the front side shown in FIG. 1 is referred to as the front, the front side or the front side, and the back side is referred to as the opposite side, the back or the back side. In FIG. 1, the right side is referred to as the right / right side, and the left side is referred to as the left / left side.

[0010] (Gripper) The gripper 10 according to the present invention includes a fixed gripper 20 having a linear body pressing portion 30, a movable gripper 50 having a linear body holding portion 60 that moves toward the linear body pressing portion 30 of the fixed gripper 20, and an operating member 130 connected to the movable gripper 50 via an interval adjustment mechanism 12 and a link mechanism 18.

[0011] The interval adjustment mechanism 12 is a mechanism for adjusting the interval between the linear body pressing portion 30 of the fixed gripper 20 and the linear body holding portion 60 of the movable gripper 50 by a guide mechanism 14. The interval adjustment mechanism 12 mainly includes a guide projection portion 84, a regulating portion 300, a slider 330, a stop portion 344, and an engagement guide portion 364.

[0012] The interval adjustment mechanism 12 has a guide mechanism 14 for guiding the movement restriction mechanism 16, and also has a movement restriction mechanism 16 for restricting the movement of the movable gripping body 50 in order to keep the interval between the wire body pressing portion 30 of the fixed gripping body 20 and the wire body holding portion 60 of the movable gripping body 50 constant.

[0013] The interval adjustment mechanism 12 is provided in a link mechanism 18 for moving the movable gripping body 50. The link mechanism 18 is mainly composed of a fixed gripping body 20, a movable gripping body 50, a first link member 70, a second link member 100, and an operating member 130. The first link member 70 constituting the link mechanism 18 has a guide portion 80 projecting toward the side pulling the operating member 130 at or near the central portion in the longitudinal direction thereof, and the guide portion 80 constitutes the guide mechanism 14.

[0014] The movement restriction mechanism 16 is composed of a regulation portion 30 of the guide mechanism 14 installed between the guide portion 80 formed on the first link member 70 and the operating member 130. to 0 It is composed of the above.

[0015] The movement restriction mechanism 16 is composed of a regulation portion 300 of the guide mechanism 14 installed between the guide portion 80 and the operating member 130.

[0016] The guide mechanism 14 is mainly composed of a guide projection 84, a regulation portion 300, a stop portion 344, and an engagement guide portion 364.

[0017] The guide portion 80 constitutes the interval adjustment mechanism 12, the guide mechanism 14, and the movement restriction mechanism 16, and includes an alley portion 82 formed in accordance with the movement locus of the guide projection 84 constituting the guide mechanism 14 and the first link member 70 for moving the movable gripping body 50. The guide portion 80 has a guide edge 86 formed around the alley portion 82.

[0018] The restricting part 300 that constitutes the interval adjusting mechanism 12 is movably attached to the operating member 130 in the vicinity of the guide part 80. The restricting part 300 is provided with an engaging guide part 364 that constitutes the movement restricting mechanism 16 in a region that engages with a guide edge 86 formed around the path part 82, and a stopping part 344 that constitutes the movement restricting mechanism 16 is provided in a region that engages with the path part 82. The guide part 80 is configured to move the first link member 70 that constitutes the link mechanism 18 to the pulling side and the pushing-back side of the operating member 130 as the restricting part 300 moves, and to stop as the restricting part 300 stops.

[0019] A slider 330 is installed between the guide part 80 protruding between the first link member 70 that constitutes the link mechanism 18 connected to the movable gripping body 50 and the operating member 130 in the restricting part 300. The slider 330 is attached to the operating member 130 in the vicinity of one end thereof, and the slider 330 is provided so as to be movable in the direction of the movable gripping body 50 and the operating member 130. The slider 330 includes an engaging guide part 364 that engages with a guide edge 86 formed around the path part 82 of the guide part 80 at the other end. The restricting part 300 is configured to fix the first link member 70 at a certain position by stopping the engaging guide part 364 engaged with the guide part 80 when the movable gripping body 50 is in a closed state and / or an open state.

[0020] The slider 330 is attached to the operating member 130 in the vicinity of one end thereof, and the slider 330 is provided so as to be movable in the direction of the movable gripping body 50 and the operating member 130, and a pin-shaped stopping part 344 that engages with the path part 82 of the guide part 80 is provided at the other end. The stopping part 344 is formed so as to constitute a movement restricting mechanism 16 that restricts the movement of the link member by engaging with the path part 82 when the movable gripping body 50 is opened.

[0021] The guide portion 80 is formed with a guide projection portion 84 having a semi-circular arc-shaped guide edge 86 extending from the pulling side to the pushing-back side of the operation member 130 along the locus of movement of the link member that moves the movable gripping body 50. The guide edge 86 of the guide portion 80 constitutes the gap adjustment mechanism 12 and is formed at the lower edge of the guide projection portion 84 that surrounds the path portion 82 of the guide portion 80. Along with the movement of the engagement guide portion 364 of the restricting portion, it is formed to move in a semi-circular arc-shaped locus from the pulling side to the pushing-back side of the operation member 130 or from the pushing-back side to the pulling side of the operation member 130. When the restricting portion 300 changes the movable gripping body 50 from the closed state to the open state, the engagement guide portion 364 located at the dead-end portion on the pushing-back side of the path portion 82 constituting the guide portion 80 or at the guide edge 86 in the vicinity thereof moves to the pulling side, and / or when the movable gripping body 50 is changed from the open state to the closed state, the engagement guide portion 364 located at the guide edge 86 on the side away from the pulling side from the dead-end portion 90 of the path portion of the guide portion 80 moves to the pushing-back side.

[0022] The gripper 10 according to the embodiment of the present invention A slider 330 disposed between the guide portion 80 protruding from the first link member 70 connected to the movable gripping body 50 and the operation member 130 A threaded rod 334, A ring portion 332 provided at one end of the threaded rod 334, A pin-shaped stop portion 344 provided at the other end of the threaded rod 334, and includes The guide portion 80 is formed with a semi-circular arc-shaped path portion 82 in accordance with the locus of movement of the first link member 70 that moves the movable gripping body 50. The restricting portion 300 is formed with holding portions 340 facing both the hole edges on the movable gripping body side of the path portion 82 of the guide portion 80. The holding part 340 of the regulating part 300 is configured to be in sliding contact with the hole edge of the path part 82 from the edge or vicinity on the pushing-back side of the path part 82 to the edge or vicinity on the pulling side of the path part 82 from the closed state to the open state.

[0023] The gripper 10 is attached to the left and right sides of the rod-shaped expander 500 that constitutes the live wire distribution tool 1000, as shown in FIG. 9 As shown in the figure, the grippers 10 attached to the left and right sides of the rod-shaped expander 500 that constitutes the live wire distribution tool 1000 constitute a pair of first grippers 10A and second grippers 10B. After the pair of first grippers 10A and second grippers 10B attached to the left and right sides of the rod-shaped expander 500 that constitutes the live wire distribution tool 1000 grip the covered electric wire W, they bring the distance between the pair of first grippers 10A and second grippers 10B closer, deflect the covered electric wire W in a direction away from the cylindrical body 510 and the telescopic body 520 of the live wire distribution tool 1000, and cut the deflected portion of the covered electric wire W with a cutting blade to cut the covered electric wire W. And when the pair of first grippers 10A and second grippers 10B attached to the left and right sides of the rod-shaped expander 500 that constitutes the live wire distribution tool 1000 grip the covered electric wire W, and after gripping the covered electric wire W, when they bring the distance between the first gripper 10A and the second gripper 10B closer and deflect the covered electric wire W in a direction away from the cylindrical body 510 and the telescopic body 520 of the rod-shaped expander 500 of the live wire distribution tool 1000, they receive a large force from the first link member 70, the second link member 100, and the covered electric wire W.

[0024] (First Embodiment) FIG. 1 is a perspective explanatory view of a gripper according to a first embodiment of the present invention. FIG. 2 is a front explanatory view of a part of the gripper according to the first embodiment of the present invention in cross section. The gripper 10 according to the first embodiment of the present invention, as shown in FIGS. 1 to 4, has a fixed gripping body 20 having a linear body pressing part 30, and a movable gripping body 50 having a linear body holding part 60 that moves toward the linear body pressing part 30 of the fixed gripping body 20. The movable gripping body 50 is provided with an operation member 130 connected thereto via a spacing adjustment mechanism 12 and a link mechanism 18. The link mechanism 18 is constituted by a first link member 70 and a second link member 100 connected between the fixed gripping body 20, the movable gripping body 50, and the operation member 130. The spacing adjustment mechanism 12 is configured to move the first link member 70 and the second link member 100 by a guide mechanism 14 disposed between the first link member 70 and the operation member 130 so as to move the first link member 70 and thereby move the movable gripping body 50.

[0025] The spacing adjustment mechanism 12 is a mechanism for adjusting the spacing between the linear body pressing portion 30 of the fixed gripping body 20 and the linear body holding portion 60 of the movable gripping body 50 by the guide mechanism 14. The spacing adjustment mechanism 12 mainly includes a guide protrusion 84, a regulation portion 300, a slider 330, a stop portion 344, and an engagement guide portion 364 formed on the first link member 70. The regulation portion 300 includes a stop portion 344 inserted into a groove portion 82 of a guide portion 80 of a slider 330 attached to the operation member 130 from a regulation portion main body 302, and an engagement guide portion 364 that engages with a guide edge (lower end edge of the guide portion) 86 of the guide portion 80.

[0026] The spacing adjustment mechanism 12 has a guide mechanism 14 for guiding a movement restriction mechanism 16, and also has a movement restriction mechanism 16 for restricting the movement of the movable gripping body 50 in order to keep the spacing between the linear body pressing portion 30 of the fixed gripping body 20 and the linear body holding portion 60 of the movable gripping body 50 constant.

[0027] The spacing adjustment mechanism 12 is provided in the link mechanism 18 and the guide mechanism 14 for moving the movable gripping body 50. The link mechanism 18 mainly includes the fixed gripping body 20, the movable gripping body 50, Fixed gripping body 20 and Movable gripping bodyIt is composed of a first link member 70 connected to 50, a second link member 100 connected to the fixed gripping body 20 and the movable gripping body 50, and an operating member 130 connected to the first link member 70 and the second link member 100. The first link member 70 that constitutes the link mechanism 18 has a guide portion 80 that constitutes a guide mechanism 14 protruding toward the side that pulls the operating member 130 at or near the central portion in the longitudinal direction thereof.

[0028] The guide mechanism 14 mainly includes a path portion 82 that constitutes the guide portion 80 and a guide protrusion 8 4、 The engaging guide portion 364 at the tip of the upper part of the slider 330 that constitutes the restricting portion 300, and the stop portion 34 disposed in the holding portion 340 of the slider 330 that constitutes the restricting portion 300 to 4 It is composed of.

[0029] The movement restricting mechanism 16 is composed of an engaging guide portion 364 and a stop portion 344 at the head 336 of the restricting portion 300 that constitutes the guide mechanism 14 laid between the guide portion 80 formed on the first link member 70 and the operating member 130.

[0030] (Fixed gripping body) As shown in FIG. 2, the fixed gripping body 20 has a linear body pressing portion 30 whose front side shape is substantially reverse concave and whose cross-sectional shape for gripping the covered electric wire W from above is substantially arc-shaped. The linear body pressing portion 30 is composed of a groove portion continuous from the right side to the left side of the fixed gripping body 20, and is entirely made of metal or partially formed of synthetic resin or the like.

[0031] As shown in FIGS. 1 and 2, the fixed gripping body 20 includes a first link member attachment portion 22 for attaching the first link member 70 whose front side shape is substantially U-shaped, and a second link member attachment portion 24 for attaching the second link member 100 whose front side shape is substantially U-shaped. The first link member mounting portion 22 and the second link member mounting portion 24 are parts that constitute the link mechanism 18. They are symmetric about the left and right, and are separated at a certain interval. One first link member mounting portion 22 is on the side that pulls the operating member 130, and the other second link member mounting portion 24 is on the side that pushes it back. They are formed at the lower part of a pair of linear body pressing portions 30.

[0032] The fixed gripping body 20 has a front mounting portion 32 with a substantially semi-circular shape on the front side, where the second link member mounting portion 24 is located. The fixed gripping body 20 has a front protruding portion 36 with a substantially frustum-of-a-cone shape, which is formed to protrude forward from the approximate center of the front side surface of the front mounting portion 32 so that the second link member 100 can rotatably contact the front side surface. The fixed gripping body 20 has a rear mounting portion 34 with a substantially semi-circular shape on the front side, where the first link member mounting portion 22 is located. The fixed gripping body 20 has a rear protruding portion 38 with a substantially frustum-of-a-cone shape, which is formed to protrude forward from the approximate center of the front side surface of the rear mounting portion 34 so that the first link member 70 can rotatably contact the front side surface.

[0033] The fixed gripping body 20 has a first fixed pivot hole 40 with a substantially circular cross-section, which is formed in a substantially horizontal direction from the approximate center of the front side surface of the second link member mounting portion 24 to the approximate center of the rear side surface of the second link member mounting portion 24. The fixed gripping body 20 has a second fixed pivot hole 42 with a substantially circular cross-section, which is formed in a substantially horizontal direction from the approximate center of the front side surface of the first link member mounting portion 22 to the approximate center of the rear side surface of the first link member mounting portion 22. The second fixed pivot hole 42 is formed on the right side (the pulling side) at the lower part of the fixed gripping body 20, and the first fixed pivot hole 40 is formed on the left side (the pulling-back side) at the lower part of the fixed gripping body 20.

[0034] After the first wire gripper 10A and the second wire gripper 10B grip the covered wire W, the fixed gripping body 20 reduces the distance between the first wire gripper 10A and the second wire gripper 10B, and deflects the covered wire W in a direction away from the cylindrical body 510 and the telescopic body 520 of the live wire distributing tool 1000. When the fixed gripping body 20 is subjected to the force from the right side and the left side of the linear body pressing portion 30 toward the center (the force from the right side to the left side and / or the force from the left side to the right side) received from the covered wire W, in order to make the fixed gripping body 20 difficult to be broken, as shown in FIG. 1, the fixed gripping body 20 has a first upper protrusion 26 and a second upper protrusion 28 formed to protrude upward from the upper surface.

[0035] The fixed gripping body 20 has a first upper protrusion 26 with a substantially arc-shaped cross section extending from the far side to the near side on the upper surface portion. Further, at a certain interval from the first upper protrusion 26, the fixed gripping body 20 has a second upper protrusion 28 with a substantially arc-shaped cross section extending from the far side to the near side. The first upper protrusion 26 and the second upper protrusion 28 are formed separately left and right with a certain interval therebetween.

[0036] In order to make the fixed gripping body 20 difficult to be broken by the force from the upper surface side to the lower surface side (the force from the upper side to the lower side) received by the fixed gripping body 20 from the second link member 100, and / or the force from the lower surface side to the upper surface side (the force from the lower side to the upper side), the fixed gripping body 20 has a first back protrusion with a substantially convex cross-sectional shape protruding from the upper part of the back side toward the lower part of the back side. In order to make the fixed gripping body 20 even more difficult to be broken by the force from the upper surface side to the lower surface side (the force from the upper side to the lower side) received by the fixed gripping body 20 from the first link member 70, and / or the force from the lower surface side to the upper surface side (the force from the lower side to the upper side), the fixed gripping body 20 has a second back protrusion with a substantially convex shape on the back side protruding from the upper part of the back side toward the lower part of the back side.

[0037] One of the first back protrusions is a protrusion extending long from the upper side to the lower side, and the other second back protrusion is a protrusion extending long from the upper side to the lower side. The first rear protrusion and the second rear protrude protrusions are formed separately on the left and right with a certain interval therebetween.

[0038] After the fixed gripping body 20 grips the covered electric wire W between the linear body pressing portion 30 and the rear mounting portion 34 of the fixed gripping body 20 and the first link member 70, when the first wire gripping device 10A and the second wire gripping device 10B are brought closer and the covered electric wire W is deflected in a direction away from the cylindrical body 510 and the telescopic body 520 of the live wire distribution tool 1000, the fixed gripping body 20 has a protrusion 29 having a substantially rectangular parallelepiped shape in order to prevent the linear body pressing portion 30 from being destroyed by the force applied from the covered electric wire W.

[0039] (Movable gripping body) As shown in FIGS. 1 and 2, the movable gripping body 50 has a substantially reverse concave shape on the front side, and is entirely made of metal or partially formed of synthetic resin or the like. The movable gripping body 50 has a linear body holding portion 60 on the upper surface of the substantially reverse concave body on the front side, for gripping the covered electric wire W from below, and the cross-sectional shape on the side surface side is substantially arc-shaped. The linear body holding portion 60 is constituted by a groove portion continuous from the right side to the left side of the movable gripping body 50.

[0040] As shown in FIGS. 1 and 2, the movable gripping body 50 includes a first link member mounting portion 52 for mounting a first link member 70 having a substantially U-shaped front side shape, and a second link member mounting portion 54 for mounting a second link member 100 having a substantially U-shaped front side shape, at the lower portion of the linear body holding portion 60. The first link member mounting portion 52 and the second link member mounting portion 54 are parts constituting the link mechanism 18, and are formed separately on the left and right with a certain interval therebetween. In this embodiment, the first link member mounting portion 52 is formed on the right side of the movable gripping body 50, and the second link member mounting portion 54 is formed on the left side of the movable gripping body 50 in this embodiment.

[0041] The movable gripping body 50 includes a movable inner hole portion 62 for inserting the first link member 70 and the second link member 100. The first link member mounting portion 52 is provided with a first movable inner hole portion 62A for inserting the first link member 70, and the second link member mounting portion 54 is provided with a second movable inner hole portion 62B for inserting the second link member 100. The first movable inner hole portion 62A and the second movable inner hole portion 62B are symmetric and arranged linearly in parallel.

[0042] The first link member mounting portion 52 has, at its substantially central portion, a first movable pivot hole 66 that is formed in the first link member mounting portion 52 in a substantially horizontal direction with the first movable inner hole portion 62A interposed therebetween and has a substantially circular cross-sectional shape. The second link member mounting portion 54 has, at its substantially central portion, a second movable pivot hole 68 that is formed in the second link member mounting portion 54 in a substantially horizontal direction with the second movable inner hole portion 62B interposed therebetween and has a substantially circular cross-sectional shape. In this embodiment, one first movable pivot hole 66 is formed on the right side (the pulling side) of the lower portion of the movable gripping body 50, and the other second movable pivot hole 68 is formed on the left side (the pulling-back side) of the lower portion of the movable gripping body 50 in this embodiment.

[0043] (Link mechanism) As shown in FIG. 3, the first link member 70 constituting the link mechanism 18 includes a link member main body portion 72 made of a metal plate-like body having a substantially F-shaped front-side shape and a guide portion 80 having a substantially arc-shaped front-side shape.

[0044] The link member main body portion 72 is formed with a movable gripping body mounting portion 74 that constitutes a region for mounting on the movable gripping body 50, a fixed gripping body mounting portion 76 that constitutes a region for mounting on the fixed gripping body 20, and an operating member mounting portion 78 that constitutes a region for mounting on the operating member 130 at the lower portion of the linear body holding portion 60. In this embodiment, the movable gripping body mounting portion 74 is formed on the right side of the movable gripping body 50, and the fixed gripping body mounting portion 76 is formed on the left side of the movable gripping body 50 in this embodiment. The movable gripping body mounting portion 74 and the fixed gripping body mounting portion 76 are symmetrical about the left and right and are formed separately on the left and right with a certain interval therebetween.

[0045] A first first pivot hole 98a is formed through the movable gripping body mounting portion 74 from the front surface to the back surface. A second second pivot hole 98b is formed through the fixed gripping body mounting portion 76 from the front surface to the back surface. A third third pivot hole 98c is formed through the operation member mounting portion 78 from the front surface to the back surface.

[0046] (Guide mechanism of the link mechanism) The first link member 70 further has a guide portion 80 formed to protrude from the central portion of the link member main body portion 72 in the direction of pulling the operation member 130, and the shape of the front side is substantially a semi-circular arc shape. The guide portion 80 is a part that constitutes the gap adjustment mechanism 12, the guide mechanism 14, and the movement restriction mechanism 16, and is a plate-like body having a substantially semi-circular arc shape in a front view and is integrally formed with the link member main body portion 72. The guide portion 80 is configured to hang down from the link member main body portion 72 downward, that is, in a direction away from the movable gripping body 50.

[0047] The guide portion 80 is provided with a path portion 82 having a substantially semi-circular arc shape in a front view, which continues from the side that pushes back the operation member 130 to the side that pulls the operation member 130. The guide portion 80 is provided with guide protrusion portions 84 around the path portion 82. The guide protrusion portions 84 are formed in an annular shape or an inverted U shape continuous with the link member main body portion 72. The guide protrusion portions 84 are formed with a substantially semi-circular arc-shaped guide edge 86 at the lower lower edge, and an upper (guide portion) upper edge 88 is formed so as to face the guide edge 86.

[0048] The path portion 82 is formed with a path end portion 90 on the side of the link member main body portion 72. From above the path end portion 90, an upper edge portion 92 of the path portion extends in a direction of pulling the operating member 130, and from below the path end portion 90, a lower edge portion 96 of the path portion extends in a direction of pulling the operating member 130. Furthermore, the path portion 82 is formed with a side edge portion 94 of the path portion facing the path end portion 90.

[0049] The upper edge portion 92 and the lower edge portion 96 of the path portion are formed substantially parallel at an equal distance from the guide edge 86 and the upper edge 88 (of the guide portion). The height difference between the path end portion 90 and the side edge portion 94 of the path portion corresponds to the vertical movement distance of the movable gripping body 50, that is, the distance that can be increased or decreased between the fixed gripping body 20. That is, corresponding to the distance by which the movable gripping body 50 moves away from the fixed gripping body 20, the side edge portion 94 of the path portion is formed to be located above or below the path end portion 90.

[0050] As shown in FIG. 4, the guide edge 86 of the guide portion 80 is configured such that by operating the operating member 130, the engagement guide portion 364 of the slider 330 moves from the side of the left path end portion 90 to the right, and the movable gripping body 50 moves upward, that is, toward the fixed gripping body 20.

[0051] The first link member 70 includes a first first pivot hole 98a having a substantially circular cross-section, which is formed in the first link member 70 in a substantially horizontal direction from the front surface to the back surface thereof. The first link member 70 includes a second second pivot hole 98b having a substantially circular cross-section, which is formed in the first link member 70 in a substantially horizontal direction from the front surface to the back surface thereof. The first link member 70 includes a third third pivot hole 98c having a substantially circular cross-section, which is formed in the first link member 70 in a substantially horizontal direction from the front surface to the back surface thereof. The first first pivot hole 98a is formed on the upper right side (the pulling side) of the first link member 70, and the second second pivot hole 98b is formed on the upper left side (the pulling-back side) of the first link member 70. The third third pivot hole 98c is formed in the lower part of the first link member 70.

[0052] (Link mechanism) The second link member 100 is a member that forms a link mechanism 18 in combination with the first link member 70, and as shown in FIGS. 1 and 2, it is formed of a plate-like body made of metal having a substantially reverse L-shaped shape on the front side. The second link member 100 includes a movable gripping body attachment portion 104 that constitutes a region attached to the movable gripping body 50, a fixed gripping body attachment portion 106 that constitutes a region attached to the fixed gripping body 20, and an operation member attachment portion 108 that constitutes a region attached to the operation member 130.

[0053] The movable gripping body attachment portion 104 is formed around a hole having an arcuate cross section formed from the front surface to the back surface on the right side of the second link member 100 (the side pulling the operation member 130), and the fixed gripping body attachment portion 106 is formed around a hole having an arcuate cross section formed from the front surface to the back surface on the left side of the second link member 100 (the side pushing back the operation member 130). The operation member attachment portion 108 is formed around a hole having an arcuate cross section formed from the front surface to the back surface below the second link member 100.

[0054] The second link member 100 is provided with a first pivot hole 110 that is substantially cylindrical and is formed in the second link member 100 in a substantially horizontal direction from the front surface to the back surface through the movable gripping body attachment portion 104. The second link member 100 is provided with a second pivot hole 112 that is substantially cylindrical and is formed in the second link member 100 in a substantially horizontal direction from the front surface to the back surface through the fixed gripping body attachment portion 106. The first pivot hole 110 of the movable gripping body attachment portion 104 and the second pivot hole 112 of the fixed gripping body attachment portion 106 are symmetric about the left and right, and are formed separately on the left and right with a certain interval therebetween. The second link member 100 includes an operation member attachment portion 108, which has a substantially cylindrical third pivot hole 114 formed in the second link member 100 in a substantially horizontal direction from the front surface to the back surface. The first pivot hole 110 is formed on the right side (the side for pulling the operation member 130) of the upper part of the second link member 100, and the second pivot hole 112 is formed on the left side (the side for pulling back the operation member 130) of the upper part of the second link member 100. The third pivot hole 114 is formed in the lower part of the second link member 100.

[0055] (Operating member) The operation member 130 is a member that constitutes a link mechanism 18 in combination with the first link member 70 and the second link member 100. As shown in FIGS. 1 and 2, it is composed of a pair of front and rear connecting members (the first connecting member 140 and the second connecting member 170), and includes a regulating portion 300 that constitutes a slider mechanism for operating a guide portion 80 provided on the first link member 70 between the pair of connecting members. The regulating portion 300 is a member that constitutes a gap adjusting mechanism 12, a guiding mechanism 14, and a movement restricting mechanism 16. A slider 330 is attached to the operation member 130 with a regulating portion main body 302.

[0056] The first connecting member 140 is substantially arcuate in a front view and is a plate-like body that is substantially bent in a plan view.

[0057] The first connecting member 140 On the right side, which is the side for pulling the first connecting member 140, it has a first contact portion 144 that is substantially wave-shaped in a front view and is a plate-like body that is substantially flat in a plan view. Following the first contact portion 144, it has a first inclined portion 146 that is inclined 25° to 30° toward the front side with respect to the first contact portion 144, is substantially rectangular in a front view, and is a plate-like body that is substantially flat in a plan view. Following the first inclined portion 146, there is a first attachment portion 148 which is a plate-like body having a substantially arc shape in a front view and a substantially flat plate shape in a plan view, and is inclined at 150° to 155° with respect to the first inclined portion 146 on the back side.

[0058] The first connecting member 140 has a first contact portion 144 that has a first connecting pivot hole 150 which is formed in the first connecting member 140 in a substantially horizontal direction from the front surface to the back surface side and has a substantially circular cross section. On the right side of the first connecting pivot hole 150, the first connecting member 140 has a first attachment hole 152 which is formed in the first connecting member 140 in a substantially horizontal direction from the front surface to the back surface side and has a substantially circular cross section.

[0059] The first connecting member 140 has a first attachment portion 148 that has a second attachment hole 154 which is formed in the first connecting member 140 in a substantially horizontal direction from the front surface to the back surface side and has a substantially circular cross section. On the left side of the second attachment hole 154, the first connecting member 140 has a third attachment hole 156 which is formed in the first connecting member 140 in a substantially horizontal direction from the front surface to the back surface side and has a substantially circular cross section. The second attachment hole 154 and the third attachment hole 156 are arranged in parallel with a certain interval therebetween.

[0060] The first connecting member 140 has a second connecting pivot hole 158 which is formed in the first connecting member 140 in a substantially horizontal direction from the front surface to the back surface side and has a substantially circular cross section, with the first attachment portion 148. The first connecting member 140 has a first attachment portion 148 that On the left side of the first attachment portion 148, the first connecting member 140 has a third connecting pivot hole 160 which is formed in the first connecting member 140 in a substantially horizontal direction from the front surface to the back surface side and has a substantially circular cross section.

[0061] The second connecting member 170 is a plate-like body having a substantially bow shape in a front view and a substantially bent shape in a plan view.

[0062] The second connecting member 170 On the right side, which is the side pulling the second connecting member 170, there is a second contact portion 174 which is a plate-like body that is substantially wavy in a front view and substantially flat in a plan view. Following the second contact portion 174, there is a second inclined portion 176 which is a plate-like body that is substantially rectangular in a front view and substantially flat in a plan view and is inclined 25° to 30° toward the back side with respect to the second contact portion 174. Following the second inclined portion 176, there is a second attachment portion 178 which is a plate-like body that is substantially arc-shaped in a front view and substantially flat in a plan view and is inclined 150° to 155° toward the front side with respect to the second inclined portion 176.

[0063] The second connecting member 170 has a fourth connecting pivot hole 180 which is substantially circular in cross-section and is formed in the second connecting member 170 in a substantially horizontal direction from the front surface to the back surface side where the second contact portion 174 is located. On the right side of the fourth connecting pivot hole 180, the second connecting member 170 has a fourth attachment hole 182 which is substantially circular in cross-section and is formed in the second connecting member 170 in a substantially horizontal direction from the front surface to the back surface side.

[0064]

[0064] The second connecting member 170 has a fifth attachment hole 184 which is substantially circular in cross-section and is formed in the second connecting member 170 in a substantially horizontal direction from the front surface to the back surface side where the second attachment portion 178 is located. On the left side of the fifth attachment hole 184, the second connecting member 170 has a sixth attachment hole 186 which is substantially circular in cross-section and is formed in the second connecting member 170 in a substantially horizontal direction from the front surface to the back surface side. The fifth attachment hole 184 and the sixth attachment hole 186 are arranged in parallel with a certain interval therebetween.

[0065]

[0065] The second connecting member 170 has a fifth connecting pivot hole 188 which is substantially circular in cross-section and is formed in the second connecting member 170 in a substantially horizontal direction from the front surface to the back surface side where the second attachment portion 178 is located. The second connecting member 170 has a second attachment portion 178 which is On the left side of the second attachment portion 178, there is a sixth connecting pivot hole 190 which is formed in the second connecting member 170 in a substantially horizontal direction from the front surface to the back surface and has a substantially circular cross-section.

[0066] The operating member 130 The first connecting pivot hole 150 and the fourth connecting pivot hole 180 are continuous, and the first attachment hole 152 and the fourth attachment hole 182 are continuous, The back surface side of the first contact portion 144 of the first connecting member 140 The front surface side of the second contact portion 174 of the second connecting member 170 are brought into contact, A fixture 200 composed of a bolt and a nut is inserted into the first attachment hole 152 and the fourth attachment hole 182, and the first connecting member 140 and the second connecting member 170 are fixed by the fixture 200.

[0067] The operating member 130 The first link member 70 and the second link member 100 are inserted into the region formed between the opposite side surfaces of the first inclined portion 146 and the first attachment portion 148 of the first connecting member 140 and the front side surfaces of the second inclined portion 176 and the second attachment portion 178 of the second connecting member 170, and the first link member 70 and the second link member 100 are rotatably attached by the pivot 120 and the pivot 122. In this embodiment, the operating member attachment portion 78 of the first link member 70 is attached to the operating member 130 by the pivot 120, and the operating member attachment portion 108 of the second link member 100 is attached to the operating member 130 by the pivot 122.

[0068] (Spacing adjustment mechanism, guiding mechanism, movement restriction mechanism) The restricting portion 300 includes a restricting portion main body 302, a slider 330 attached to the restricting portion main body 302, and a holding portion 340 attached to the tip of the slider 330, and is a part that constitutes the spacing adjustment mechanism 12, the guiding mechanism 14, and the movement restriction mechanism 16.

[0069] The restricting portion main body 302 has a substantially rectangular parallelepiped shape, On the front side, it has a first main body surface portion 304 that is approximately rectangular in a front view and has a flat surface. On the right side, it has a second main body surface portion 306 that is approximately rectangular in a side view. On the back side, it has a third main body surface portion 308 that is approximately rectangular in a rear view and has a flat surface. On the left side, it has a fourth main body surface portion 310 that is approximately rectangular in a side view. The regulating part main body 302 On the upper surface, it has a main body upper surface portion 312 whose planar side shape is approximately rectangular. On the lower surface, it has a main body lower surface portion 314 whose bottom side shape is approximately rectangular.

[0070] The regulating part main body 302 has a screw rod mounting hole 316 that is formed inside the regulating part main body 302 in a substantially vertical direction from approximately the center of the main body upper surface portion 312 to approximately the center of the main body lower surface portion 314. The screw rod mounting hole 316 has a substantially circular cross-section and has a screw groove engraved on its surface, and rotatably inserts a slider 330. The regulating part main body 302 has a seventh mounting hole 318 that is formed inside the regulating part main body 302 in a substantially horizontal direction from approximately the center of the first main body surface portion 304 near the second main body surface portion 306 to approximately the center of the third main body surface portion 308 near the second main body surface portion 306. The seventh mounting hole 318 has a substantially circular cross-section. The regulating part main body 302 has an eighth mounting hole 320 that is formed inside the regulating part main body 302 in a substantially horizontal direction from approximately the center of the first main body surface portion 304 near the fourth main body surface portion 310 to approximately the center of the third main body surface portion 308 near the fourth main body surface portion 310. The eighth mounting hole 320 has a substantially circular cross-section.

[0071] As shown in FIG. 2A, the slider 330 At one end, it has a ring portion 332 that is endless annular or annular with a partial notch. It has a substantially cylindrical screw rod 334 that is formed to extend from the ring portion 332 and has a screw groove formed on its surface. At the end of the screw rod 334 opposite to the ring portion 332, it has a holding portion 340 into which the screw rod 334 is rotatably inserted. The slider 330 includes a head 336 for attaching a holding portion 340 to the tip of its upper part, and a neck portion 338. The head 336 and the neck portion 338 are circular in cross-section. The holding portion 340 is a substantially columnar body, and includes an inner groove portion 342 for internally installing a guide portion 80 above it, and a slider attachment portion 346 for attaching the slider 330 below it. The inner groove portion 342 is a groove that is drilled downward from the upper end of the holding portion 340 and is substantially U-shaped in side view. In the inner groove portion 342, planar vertical walls 360 and 362 that are in sliding contact with the front and rear surfaces of the guide portion 80 of the first link member 70 are formed in the front-rear direction, and an engagement guide portion 364 that contacts the lower end edge 86 of the guide portion of the guide portion 80 of the first link member 70 is formed at the bottom of the lower groove. The slider attachment portion 346 of the holding portion 340 is formed with a mounting hole 348 having an internal thread formed on its inner wall, and is configured such that the head 336 of the slider 330 is fitted into the mounting hole 348. Further, the slider attachment portion 346 is provided with a screw hole 350 that is drilled from the outer surface toward the mounting hole 348, and is configured such that a slider attachment screw 352 can be screwed into the screw hole 350. The holding portion 340 is attached to the slider 330 by fitting the head 336 of the slider 330 into the mounting hole 348 and screwing the slider attachment screw 352 into the screw hole 350 from the outside. The slider 330 is rotatably attached to the holding portion 340 with the head 336 and the neck portion 338 being within the mounting hole 348 of the holding portion 340.

[0072] The holding portion 340 is attached such that the surface of the guide portion 80 is inserted into the inner groove portion 342 so as to be parallel to the groove wall of the inner groove portion 342, and the stop portion 344 is inserted through the upper end edge 88 (of the guide portion) of the guide portion 80, and can move along the front and rear surface sides of the guide portion 80.

[0073] The slider 330 is attached to the regulation unit main body 302 by rotatably screwing the screw rod 334 of the slider 330 into the screw rod attachment hole 316 with screw threads engraved on the side surface of the regulation unit main body 302.

[0074] The regulation unit 300 is attached to the operation member 130 by attaching the regulation unit main body 302 to the operation member 130. The regulation unit main body 302 The seventh attachment hole 318 of the regulation unit main body 302 is continuous with the second attachment hole 154 of the first connecting member 140 and the fifth attachment hole 184 of the second connecting member 170, and The eighth attachment hole 320 of the regulation unit main body 302 is continuous with the third attachment hole 156 of the first connecting member 140 and the sixth attachment hole 186 of the second connecting member 170, The first main body surface portion 304 of the regulation unit main body 302 is brought into contact with the first inclined portion 146 of the first connecting member 140, and The third main body surface portion 308 of the regulation unit main body 302 is interposed by bringing the surface on the back side into contact with the sixth attachment hole 186 of the second connecting member 170. And the regulation unit 300 The fixture 222 is inserted into the seventh attachment hole 318, the second attachment hole 154, and the fifth attachment hole 184, and The fixture 224 is inserted into the eighth attachment hole 320, the third attachment hole 156, and the sixth attachment hole 186, The first main body surface portion 304 of the regulation unit 300 is fixed to the first inclined portion 146 of the first connecting member 140 by the fixtures 222 and 224, and The third main body surface portion 308 of the regulation unit 300 is fixed to the sixth attachment hole 186 of the second connecting member 170, thereby attaching it to the operation member 130.

[0075] (Configuration of the interval adjustment mechanism, guide mechanism, movement restriction mechanism, and link mechanism) FIG. 1 is a perspective view of a gripping device according to a first embodiment of the present invention. FIG. 2A is a front view of a part of the gripping device shown in FIG. 1 in cross section. FIG. 2B(A) is an explanatory view showing the operation of the gripping device according to the first embodiment of the present invention. FIG. 2B(B) is a view of the gripping device shown in FIG. 2B(A) as seen in the direction of arrow A. FIG. 2B(C) is a view of the gripping device shown in FIG. 2B(A) as seen in the direction of arrow B. FIG. 3 is an explanatory view of a first link member. As shown in FIGS. 1 and 2, the first link member 70 is attached to the fixed gripping body 20 rotatably by a pivot 126B such that the second fixed pivot hole 42 of the first link member attachment portion 22 of the fixed gripping body 20 and the second second pivot hole 98b of the fixed gripping body attachment portion 76 of the first link member 70 are continuous, with the front surface of the rear protruding portion 38 of the first link member attachment portion 22 of the fixed gripping body 20 facing the surface of the fixed gripping body attachment portion 76 of the first link member 70, and the pivot 126B being inserted into the second fixed pivot hole 42 of the fixed gripping body 20 and the second second pivot hole 98b of the first link member 70. As shown in FIGS. 1 and 2, the first link member 70 is attached to the movable gripping body 50 rotatably by a pivot 126A such that the second movable pivot hole 68 of the first link member attachment portion 52 of the movable gripping body 50 and the first first pivot hole 98a of the first link member 70 are continuous, with the inner surface of the first link member attachment portion 52 of the movable gripping body 50 contacting the front and back surfaces of the first link member 70, and the pivot 126A being inserted into the second movable pivot hole 68 of the movable gripping body 50 and the first first pivot hole 98a of the first link member 70. As shown in FIGS. 1 and 2, the first link member 70 has the back side of the first connecting member 140 facing the front side of the first link member 70 such that the second connecting pivot hole 158 of the first connecting member 140 and the third third pivot hole 98c of the first link member 70 are continuous, and also has the front side of the second connecting member 170 facing the back side of the first link member 70 such that the fifth connecting pivot hole 188 of the second connecting member 170 and the third third pivot hole 98c of the first link member 70 are continuous. The pivot 120 is inserted into the second connecting pivot hole 158 and the fifth connecting pivot hole 188 of the operation member 130 and the third pivot hole 98c of the first link member 70, and the operation member 130 is rotatably attached to the pivot 120. A spacer is interposed between the first link member 70, the first connecting member 140, and the second connecting member 170.

[0076] As shown in FIGS. 1 and 2, the second link member 100 is attached to the fixed gripping body 20 rotatably by a pivot 124B. The front surface of the front protruding portion 36 of the second link member attachment portion 24 of the fixed gripping body 20 and the surface of the fixed gripping body attachment portion 106 of the second link member 100 are opposed to each other so that the first fixed pivot hole 40 of the fixed gripping body 20 and the second pivot hole 112 of the fixed gripping body attachment portion 106 of the second link member 100 are continuous, and the pivot 124B is inserted into the first fixed pivot hole 40 of the fixed gripping body 20 and the second pivot hole 112 of the second link member 100. As shown in FIGS. 1 and 2, the second link member 100 is attached to the movable gripping body 50 rotatably by a pivot 124A. The inner surface of the first movable inner hole portion 62A of the second link member attachment portion 54 of the movable gripping body 50 is brought into contact with the front and back surfaces of the second link member 100 so that the first movable pivot hole 66 of the movable gripping body 50 and the first pivot hole 110 of the second link member 100 are continuous, and the pivot 124A is inserted into the first movable pivot hole 66 of the movable gripping body 50 and the first pivot hole 110 of the second link member 100. As shown in FIGS. 1 and 2, the second link member 100 is arranged such that the third connecting pivot hole 160 of the first connecting member 140 and the third pivot hole 114 of the second link member 100 are continuous. The back side of the first connecting member 140 and the front side of the second link member 100 are opposed to each other. The front side of the second connecting member 170 and the back side of the second link member 100 are opposed to each other so that the sixth connecting pivot hole 190 of the second connecting member 170 and the third pivot hole 114 of the second link member 100 are continuous. The pivot 122 is inserted into the third connecting pivot hole 160 and the sixth connecting pivot hole 190 of the operating member 130 and the third pivot hole 114 of the second link member 100, and the operating member 130 is rotatably attached to the pivot 122 by the pivot 122. Note that a spacer is interposed between the second link member 100 and the first connecting member 140 and the second connecting member 170.

[0077] As shown in FIGS. 1 and 2, the slider 330 is attached to the first link member 70 by inserting the stop portion 344 into the mounting hole 348 of the slider 330 such that the mounting hole 348 of the holding portion 340 and the narrow path portion 82 of the first link member 70 are continuous. The inner surfaces of the vertical walls 360 and 362 of the inner groove portion 342 of the holding portion 340 are opposed to the front surface and the back surface of the guide portion 80 of the first link member 70, and the lower end edge 86 of the guide portion of the guide portion 80 and the engaging guide portion 364 of the holding portion 340 are in contact with each other. is attached to the first link member 70 by inserting the stop portion 344 into the mounting hole 348 of the slider 330.

[0078] As shown in FIGS. 1 and 2, when the ring portion 332 of the slider 330 is rotated, the threaded rod 334 rotates inside the threaded rod mounting hole 316 of the regulating portion main body 302, and thereby the holding portion 340 moves up and down. Since the fixed gripping body 20 and the movable gripping body 50 are connected to the first link member 70 and the second link member 100 in this way, when the first link member 70 and the second link member 100 are rotated, the movable gripping body 50 can be separated from and contacted with the fixed gripping body 20. In the wire gripper 10 according to the first embodiment of the present invention, the covered electric wire W is positioned between the fixed gripping body 20 and the movable gripping body 50, and the first link member 70 and the second link member 100 are rotated to bring the movable gripping body 50 closer to the fixed gripping body 20, and the covered electric wire W is gripped between the wire pressing portion 30 of the fixed gripping body 20 and the wire holding portion 60 of the movable gripping body 50.

[0079] The engaging guide portion 364 of the holding portion 340 is in slidable contact with the lower end edge 86 of the guide portion of the first link member 70. Also, the difference in height between the dead end portion 90 of the path portion and the side edge portion 94 of the path portion corresponds to the vertical movement distance of the movable gripping body 50, that is, the distance that can be increased or decreased from the fixed gripping body 20. That is, the engaging guide portion 364 of the holding portion 340 is formed in a substantially arc shape corresponding to the distance by which the movable gripping body 50 moves away from the fixed gripping body 20, and the side edge portion 94 of the path portion is formed to be located below the dead end portion 90 of the path portion. Therefore, when the holding portion 340 of the regulating portion main body 302 is moved up and down by rotating the ring portion 332 of the slider 330, the engaging guide portion 364 of the holding portion 340 moves up and down along the lower end edge 86 of the guide portion of the first link member 70, and the first link member 70 and the second link member 100 that together with the first link member 70 constitute a parallel crank mechanism rotate. As a result, the first link member 70 and the second link member 100 are rotatably attached Movable gripping body 50 moves forward and backward with respect to the fixed gripping body 20.

[0080] As shown in FIGS. 2 and 4, when the movable gripping body 50 to which the first link member 70 and the second link member 100 are rotatably attached moves forward and backward with respect to the fixed gripping body 20, the distance between the linear body pressing portion 30 of the fixed gripping body 20 and the linear body holding portion 60 of the movable gripping body 50 changes. The distance between the linear body pressing portion 30 of the fixed gripping body 20 and the linear body holding portion 60 of the movable gripping body 50 is the widest when the engaging guide portion 364 of the slider 330 is close to the left side of the guide portion 80 (the dead end portion 90 side of the path portion 82), and is the narrowest when the engaging guide portion 364 of the slider 330 is close to the right side of the guide portion 80 (the side farthest from the link member main body portion 72 of the guide portion 80).

[0081] The engaging guide portion 364 of the holding portion 340 sandwiches the covered electric wire W between the wire body pressing portion 30 of the fixed gripping body 20 and the wire body holding portion 60 of the movable gripping body 50, and by rotating the ring portion 332 of the slider 330, the holding portion 340 of the regulating portion main body 302 is moved up and down. As a result, the first link member 70 is rotated, and the movable gripping body 50 is brought closer to the fixed gripping body 20. When the wire body pressing portion 30 of the fixed gripping body 20 and the wire body holding portion 60 of the movable gripping body 50 press the side surface portion of the covered electric wire W with a strong force, a strong force is received from the lower end edge 86 of the guide portion of the first link member 70. Therefore, a large frictional force is generated between the engaging guide portion 364 of the holding portion 340 and the lower end edge 86 of the guide portion of the first link member 70. Thus, the engaging guide portion 364 of the holding portion 340 will not move to the right or left unless the force with which the wire body pressing portion 30 of the fixed gripping body 20 and the wire body holding portion 60 of the movable gripping body 50 press the side surface portion of the covered electric wire W is weakened by rotating the ring portion 332 of the slider 330. As shown in FIG. 2, the guide portion 80 of the first link member 70 is inserted into an inner groove portion 342 formed in the holding portion 340 of the slider 330. Also, the engaging guide portion 364 is fitted into the narrow path portion 82 of the first link member 70 and the mounting hole 348 of the slider 330. Therefore, a state in which the guide portion 80 of the first link member 70 is always in slidable contact with the inner groove portion 342 formed in the holding portion 340 of the slider 330 is maintained.

[0082] As shown in FIG. 1, the first link member 70 Since the front and back surfaces of the movable gripping body mounting portion 74 of the first link member 70 are in contact with the inner surface of the second movable inner hole portion 62B of the movable gripping body 50, and the front and back surfaces of the guide portion 80 are in contact with the inner groove portion 342 of the regulating portion 300, the first link member 70 is prevented from being deformed to the front side or the back side by the second movable inner hole portion 62B of the movable gripping body 50 and the inner groove portion 342 of the slider 330. As a result, the wire gripper 10 prevents the first link member 70 from deforming to the front side or the back side, brings the movable gripping body 50 closer to the fixed gripping body 20, grips the coated wire W between the wire body pressing portion 30 of the fixed gripping body 20 and the wire body holding portion 60 of the movable gripping body 50, and then reduces the force for gripping the coated wire W or prevents a gap from occurring between the coated wire W and the wire body pressing portion 30 of the fixed gripping body 20 and the wire body holding portion 60 of the movable gripping body 50.

[0083] (Link mechanism) The movable gripping body 50, the first link member 70, the second link member 100, and the operation member 130 of the wire gripper 10 constitute a link mechanism 18 as shown in FIGS. 1 and 2. The first link member 70 serves as a driving joint that operates a parallel crank mechanism, the second link member 100 serves as a driven joint that operates when the first link member 70, which is the driving joint, operates, the operation member 130 is connected to the first link member 70, which is the driving joint, and the second link member 100, which is the driven joint, and also serves as a fixed joint that does not operate in the parallel crank mechanism. The movable gripping body 50 is connected to the first link member 70, which is the driving joint, and the second link member 100, which is the driven joint, and also serves as a connecting joint that operates in the parallel crank mechanism. Figure 9 shows a state in which the coated wire W is sandwiched between the fixed gripping body 20 and the movable gripping body 50 from the upper and lower two directions. The movable gripping body 50 is rotatably connected above the first link member 70 and the second link member 100 so as to be separable from and attachable to the fixed gripping body 20.

[0084] (Functions and usage methods of the interval adjustment mechanism, guide mechanism, movement restriction mechanism, and link mechanism) The functions and usage methods of the interval adjustment mechanism, guide mechanism, movement restriction mechanism, and link mechanism of the wire gripper 10 according to the first embodiment of the present invention will be mainly described with reference to FIGS. 4A to 4B. When the wire tying device 10 is hooked onto the coated electric wire W with the movable holding body 50 being in the state farthest from the fixed holding body 20, as shown in FIG. 2B, the stop portion 344 of the slider 330 that constitutes the interval adjusting mechanism 12 and the movement restricting mechanism 16 is positioned on the side of the dead end portion 90 of the narrow path portion of the guide portion 80, and the screw rod 334 is rotated to abut the engagement guide portion 364 of the slider 330 against the lower end edge 86 of the guide portion, thereby fixing the slider 330 to the guide portion 80. In this state, the wire tying device 10 is lifted up to the position of the coated electric wire W, and as shown in FIG. 4A, the coated electric wire W is positioned between the fixed holding body 20 and the movable holding body 50 of the wire tying device 10. At this time, when the linear body pressing portion 30 of the fixed holding body 20 and the linear body holding portion 60 of the movable holding body 50 are maintained substantially in the horizontal direction, the screw rod 334 of the slider 330 inclines slightly toward the pushing-back side from the vertical direction, and the tip of the pushing-back side of the operating member 130 protrudes slightly forward (the pushing-back side) from the pushing-back side of the fixed holding body 20. Accordingly, even when the operating member 130 is pulled to the right side (the pulling side) with the fixed holding body 20 being immovable, as shown in FIG. 4A, the first link member 70 and the second link member 100 rotate counterclockwise (rotate toward the pushing-back side) with the pivot 126B and the pivot 124B as pivots, and the operating member 130 moves downward to the right in accordance with the movement of the pivot 120 and the pivot 122. At this time, the position of the stop portion 344 also moves downward to the right together with the operating member 130. When the stop portion 344 hits the lower edge portion 96 of the narrow path portion of the guide portion 80, the operating member 130 no longer moves downward to the right, and functions as the movement restricting mechanism 16 that acts so that the first link member 70, the second link member 100, and the movable holding body 50 do not move. At this time, the operating member attachment portion 78 of the first link member 70 and the operating member attachment portion 108 of the second link member 100 also protrude toward the pushing-back side, and the first link member 70 and the second link member 100 incline. However, the engagement guide portion 364 of the slider 330 does not push up the guide edge 86 of the guide portion 80 formed on the pulling side of the first link member 70. Thus, the guide portion 80 and the stop portion 344 function as the movement restricting mechanism 16 that acts so that the first link member 70, the second link member 100, and the movable holding body 50 do not move.

[0085] Next, when clamping the covered wire W between the fixed gripping body 20 and the movable gripping body 50, as shown in FIGS. 4A and 4B, by rotating the screw rod 334 of the slider 330 that constitutes the gap adjustment mechanism 12 counterclockwise, the engaging guide portion 364 at the upper end of the screw rod 334 is brought into contact with the guide edge 86 of the guide portion 80. Further, when the screw rod 334 is rotated counterclockwise, the guide edge 86 of the engaging guide portion 364 of the slider 330 slides to lift the guide portion 80, and accordingly, the first link member 70 and the second link member 100 that constitute the gap adjustment mechanism 12 rotate counterclockwise about the pivot 124B and the pivot 126B to lift the side of the movable gripping body attachment portion 74, and move the movable gripping body 50 upward toward the fixed gripping body 20. Thus, by the functions of the slider 330, the guide portion 80 of the first link member 70, and the second link member 100 that constitute the gap adjustment mechanism 12, the movable gripping body 50 can be moved toward the fixed gripping body 20 to clamp the covered wire W. Furthermore, when reducing the gap between the fixed gripping body 20 and the movable gripping body 50 according to the wire diameter of the covered wire W, as shown in FIG. 4B, by rotating the screw rod 334 of the slider 330, a thinner covered wire W can be firmly tightened. At this time, the screw rod 334 of the slider 330 inclines slightly toward the side of pushing back from the vertical direction when the wire body pressing portion 30 of the fixed gripping body 20 and the wire body holding portion 60 of the movable gripping body 50 are maintained in the horizontal direction. The tip of the pushing-back side of the operation member 130 protrudes considerably behind the pushing-back side of the fixed gripping body 20 (near the center in the width direction of the fixed gripping body 20). Accordingly, the operation member attachment portion 78 of the first link member 70 and the operation member attachment portion 108 of the second link member 100 also move to the pulling side, and the first link member 70 and the second link member 100 incline considerably. Then, the engaging guide portion 364 of the slider 330 that has been moved upward by rotating the screw rod 334 pushes up the guide edge 86 of the guide portion 80 formed on the pulling side of the first link member 70. Note that the rotation of the ring portion 332 of the restricting portion 300 is often performed by hooking the hook 702 of the rotating rod 700 described later on the ring portion 332 and rotating the rotating rod 700.

[0086] Next, the process of removing the wire bundling device 10 from the coated electric wire W will be described. By rotating the screw rod 334 of the slider 330 that constitutes the gap adjustment mechanism 12 clockwise, the screw rod 334 is lowered to contact the lower edge of the groove portion 96 of the guide portion 80. Further, by rotating the screw rod 334 of the slider 330 clockwise, the screw rod 334 is loosened and the screw rod 334 is lowered so, s By lowering the stop portion 344 of the slider 330 and rotating the first link member 70 clockwise about the pivot 126B, the movable gripping body 50 moves away from the fixed gripping body 20, and the wire bundling device 10 can be pulled away from the coated electric wire W.

[0087] (Modification of the First Embodiment)

[0088] The wire bundling device 10, which is a modification of the first embodiment of the present invention, as shown in FIGS. 5 to 9, has a fixed gripping body 20 having a linear body pressing portion 30, a movable gripping body 50 having a linear body holding portion 60 that moves toward the linear body pressing portion 30 of the fixed gripping body 20, and an operating member 130 connected to the movable gripping body 50 via a gap adjustment mechanism 12 and a link mechanism 18.

[0089] The gap adjustment mechanism 12 is a mechanism that adjusts the gap between the linear body pressing portion 30 of the fixed gripping body 20 and the linear body holding portion 60 of the movable gripping body 50 by a guide mechanism 14. The gap adjustment mechanism 12 mainly includes a guide projection 84, a regulating portion 300, a slider 330, a stop portion 344, and an engagement guide portion 364.

[0090] The gap adjustment mechanism 12 has a guide mechanism 14 that guides the movement restriction mechanism 16, and also has a movement restriction mechanism 16 that restricts the movement of the movable gripping body 50 in order to keep the gap between the linear body pressing portion 30 of the fixed gripping body 20 and the linear body holding portion 60 of the movable gripping body 50 constant.

[0091] The interval adjustment mechanism 12 is provided in a link mechanism 18 for moving the movable gripping body 50. The link mechanism 18 mainly includes a fixed gripping body 20, a movable gripping body 50, a first link member 70, a second link member 100, and an operating member 130. A guide portion 80 constituting a guide mechanism 14 that protrudes toward the side pulling the operating member 130 is provided at the central portion or vicinity in the longitudinal direction of the first link member 70 constituting the link mechanism 18.

[0092] The guide mechanism 14 mainly includes a guide protrusion 84 and an engagement guide portion 364 constituting the guide portion 80, and a stop portion 344 of a restricting portion 300.

[0093] The movement restricting mechanism 16 is constituted by a restricting portion 300 that constitutes a guide mechanism 14 installed between a guide portion 80 formed on the first link member 70 and the operating member 130.

[0094] The guide portion 80 constitutes the interval adjustment mechanism 12, the guide mechanism 14, and the movement restricting mechanism 16, and includes an alley portion 82 formed in accordance with the movement locus of the first link member 70 that moves the guide protrusion 84 constituting the guide mechanism 14 and the movable gripping body 50. The guide portion 80 is formed with a guide edge 86 formed around the alley portion 82.

[0095] The restricting portion 300 constituting the interval adjustment mechanism 12 is movably attached to the operating member 130 in the vicinity of the guide portion 80. The restricting portion 300 is provided with an engagement guide portion 364 constituting the movement restricting mechanism 16 in a region that engages with the guide edge 86 formed around the alley portion 82, and a stop portion 344 constituting the movement restricting mechanism 16 is provided in a region that engages with the alley portion 82. The guide portion 80 is configured to move the link member to the pulling side and the pushing-back side of the operation member 130 as the regulation portion 300 moves, and to stop as the regulation portion 300 stops.

[0096] A slider 330 is installed between the guide portion 80 protruding from the first link member 70 constituting the link mechanism 18 connected to the movable gripping body 50 and the operation member 130. The slider 330 is attached to the operation member 130 near one end thereof, and the slider 330 is provided so as to be movable in the direction of the movable gripping body 50 and the operation member 130. The slider 330 includes an engaging guide portion 364 that engages with a guide edge 86 formed around the path portion 82 of the guide portion 80 at the other end thereof. The regulation portion 300 is configured to fix the first link member 70 at a certain position by stopping the engaging guide portion 364 engaged with the guide portion 80 in a state where the movable gripping body 50 is closed and / or opened.

[0097] The slider 330 is attached to the operation member 130 near one end thereof, and the slider 330 is provided so as to be movable in the direction of the movable gripping body 50 and the operation member 130, and a pin-shaped stop portion 344 that engages with the path portion 82 of the guide portion 80 is provided at the other end thereof. The stop portion 344 is formed so as to constitute a movement restriction mechanism 16 that restricts the movement of the link member by engaging with the path portion 82 when the movable gripping body 50 is opened.

[0098] The guide portion 80 is formed with a guide protrusion 84 having a semi-circular arc-shaped guide edge 86 extending from the pulling side to the pushing-back side of the operation member 130 along the locus of movement of the link member that moves the movable gripping body 50 from the pulling side to the pushing-back side of the operation member 130. The guiding edge 86 of the guiding portion 80 forms the gap adjusting mechanism 12, and is formed at the lower edge of the guiding projection 84 that surrounds the path portion 82 of the guiding portion 80. Along with the movement of the engaging guiding portion 364 of the restricting portion 300, it is formed to move along the semi-circular arc trajectory from the pulling side to the pushing-back side of the operating member 130 or from the pushing-back side to the pulling side of the operating member 130. When the restricting portion 300 changes the movable gripping body 50 from the closed state to the open state, the engaging guiding portion 364 located at the dead end portion on the pushing-back side of the path portion 82 constituting the guiding portion 80 or at the guiding edge 86 near it moves to the pulling side, and / or when the movable gripping body 50 changes from the open state to the closed state, the engaging guiding portion 364 located at the guiding edge 86 on the side away from the pulling side from the dead end portion 90 of the path portion of the guiding portion 80 moves to the pushing-back side.

[0099] Such a configuration is the same as that of the wire gripper 10 according to the first embodiment. The wire gripper 10 which is a modification of the first embodiment differs only in the configuration of the guiding portion 80 that forms the gap adjusting mechanism 12, the guiding mechanism 14, and the movement restricting mechanism 16 formed on the first link member 70 that constitutes the link mechanism 18. Therefore, here, the description will focus on the guiding portion 80 formed on the first link member 70, and the descriptions of other configurations will be omitted.

[0100] The guiding portion 80 formed on the link member main body portion 72 of the first link member 70 is formed in an annular shape in the first embodiment, and a substantially elliptical path portion 82 is formed inside it. However, the guiding portion 80 in the modification of the first embodiment is not connected on the side opposite to the link member main body portion 72 and is formed in an open state. The guiding portion 80 in the modification of the first embodiment is composed of a linear path upper edge portion 92 where the upper guiding projection 84 extends in a direction close to horizontal, and a guiding projection 84 that extends from the link member main body portion 72 in a beak shape facing the path upper edge portion 92. The narrow path portion 82 is formed between the upper edge portion 92 of the narrow path portion formed by notching the link member main body portion 72 and the lower edge portion 96 of the narrow path of the guide projection portion 84. The guide projection portion 84 is formed with a lower edge portion 96 of the narrow path where the upper edge of the upper guide projection portion 84 extends in an arc shape and a lower edge 86 of the guide portion where the lower edge of the lower guide projection portion 84 extends in an arc shape. That is, in the guide projection portion 84, the lower edge 86 of the guide portion, which is the peripheral edge of the lower guide portion constituting the guide projection portion 84, is substantially arc-shaped, and the lower edge portion 96 of the narrow path, which is the upper guide peripheral edge constituting the guide projection portion 84, is substantially arc-shaped. The guide portion 80 is formed with an open narrow path portion 82 in which the upper edge portion 92 of the narrow path of the link member main body portion 72 constituting the guide projection portion 84 extends substantially parallel to near the center of the lower edge portion 96 of the narrow path of the guide projection portion 84, and the upper edge portion 92 of the narrow path does not exist from near the center to the tip side of the guide projection portion 84. The lower edge 86 of the guide portion of the first link member 70 is configured to be slidably in contact with the engagement guide portion 364 of the holding portion 340 and to be pushed up by the screw rod 334 of the slider 330.

[0101] (Live wire distribution tool) Regarding the method of using the wire gripping device 10 according to the present invention, mainly with respect to the case of using it as a live wire distribution tool 1000 used in the live wire distribution method, it will be described mainly with reference to FIG. 9 It will be described based on. The live wire distribution tool 1000 is, as shown in FIG. 9 As shown, a pair of first wire gripping devices 10A and second wire gripping devices 10B are attached to both ends of the rod-shaped expander 500. After gripping the covered electric wire W with this pair of first wire gripping devices 10A and second wire gripping devices 10B, it is a tool used to bend the covered electric wire W and cut the covered electric wire W. The pair of first wire gripping devices 10A and second wire gripping devices 10B attached to both ends of the rod-shaped expander 500 of the live wire distribution tool 1000 according to the second embodiment of the present invention are both the wire gripping devices 10 according to the first embodiment of the present invention. The rod-shaped expander 500 of the live wire distribution tool 1000 is A cylindrical body 510 having a first attachment portion 512 for attaching a first wire gripper 10A to one end; A first wire support 600 attached to the cylindrical body 510 by attaching the cylindrical body 510 to the attachment portion 602; A telescopic body 520 having a second attachment portion 522 for attaching a second wire gripper 10B to one end, with the side of the end opposite the second attachment portion 522 built into the cylindrical body 510 and telescoping with respect to the cylindrical body 510; A second wire support 610 attached to the telescopic body 520 by attaching the telescopic body 520 to the attachment portion 612; A reinforcing portion (not shown) attached to the telescopic body 520; A reciprocating shaft (not shown) that screws with the reinforcing portion (not shown); Comprising.

[0102] The cylindrical body 510 has a side cylindrical portion 514 that is substantially cylindrical and is formed to protrude from its side surface as shown in FIG. 9 As shown in; It has a side cylindrical hole portion (not shown) formed from an opening formed at the end of the side cylindrical portion 514 toward the inside of the cylindrical body 510, It has an input shaft 516 having an input portion 518 at one end that is rotatably fitted into the side cylindrical hole portion (not shown), The input shaft 516 has a first bevel gear (not shown) attached to the end opposite the input portion 518, The reciprocating shaft (not shown) is attached to the input shaft 516 and has a second bevel gear (not shown) that meshes with the first bevel gear (not shown). The reciprocating shaft (not shown) rotates the first bevel gear (not shown) attached to the end opposite the input portion 518 of the input shaft 516 by rotating the input portion 518 of the input shaft 516, whereby the second bevel gear (not shown) rotates when it rotates. ​The telescopic body 520, which is engaged with a reciprocating shaft (not shown) through a reinforcing part (not shown) and is attached to the reinforcing part (not shown), is telescopic with respect to the cylindrical body 510. When the reciprocating shaft (not shown) rotates, the telescopic body 520 expands and contracts with respect to the cylindrical body 510. When the telescopic body 520 attached to one reinforcing part (not shown) and the other reinforcing part (not shown) expands and contracts with respect to the cylindrical body 510, the distance between the first gripper 10A attached to the first attachment part 512 of the cylindrical body 510 and the second gripper 10B attached to the second attachment part 522 of the telescopic body 520 expands and contracts.

[0103] The rod-shaped expander 500 of the live wire distributing tool 1000 places the covered electric wire W in the first wire insertion area 604 for inserting the covered electric wire W of the first wire support 600 shown in FIG. 9 and the second wire insertion area 614 for inserting the covered electric wire W of the second wire support 610 shown in FIG. After that, the first part P1 of the covered electric wire W is gripped by the first gripper 10A, and the second part P2 of the covered electric wire W is gripped by the second gripper 10B, thereby gripping the covered electric wire W. 9 As shown in FIG., the first gripper 10A hooks the hook 702 formed at at least one end of the rotating rod 700 on the ring part 332 of the slider 330, and rotates the ring part 332 of the slider 330 to grip the first part P1 of the covered electric wire W. The first gripper 10A is shown in FIG. 9 As shown in, by hooking the hook 702 formed at at least one end of the rotating rod 700 on the ring part 332 of the slider 330 and rotating the ring part 332 of the slider 330, the first part P1 of the covered electric wire W is gripped. The second gripper 10B hooks the hook 702 formed at at least one end of the rotating rod 700 on the ring part 332 of the slider 330, rotates the ring part 332 of the slider 330, and grips a second part P2 different from the first part P1 of the covered electric wire W. The live wire distribution tool 1000 grips the first portion P1 of the coated electric wire W with the first wire gripper 10A and the second portion P2 of the coated electric wire W with the second wire gripper 10B. Then, by rotating the input portion 518 of the input shaft 516, the length of the portion of the telescopic body 520 extending outside the cylindrical body 510 is shortened, the distance between the first wire gripper 10A and the second wire gripper 10B is shortened, and the portion between the first electric wire support 600 on the right side and the second electric wire support 610 on the left side of the coated electric wire W is bent so as to protrude in the direction opposite to the cylindrical body 510, and the bent portion is cut by a cutting blade, thereby cutting the coated electric wire W. Since the live wire distribution tool 1000 itself is not provided with a cutting blade for cutting the coated electric wire W, the live wire distribution tool 1000 may be called an electric wire splitting assist tool. Note that the live wire distribution tool 1000 may be provided with a cutting blade for cutting the coated electric wire W.

[0104] As described above, the embodiments of the present invention are disclosed in the above description, but the present invention is not limited thereto. That is, various changes can be made to the embodiments described above with respect to the mechanism, shape, material, quantity, position, or arrangement, etc., without departing from the scope of the technical idea and purpose of the present invention, and they are included in the present invention.

Explanation of Reference Numerals

[0105] 10 Wire gripper 10A First wire gripper 10B Second wire gripper 12 Spacing adjustment mechanism 14 Guide mechanism 16 Movement restriction mechanism 18 Link mechanism 20 Fixed gripping body 22 First link member attachment portion 24 Second link member attachment portion 26 First upper protruding portion 28 Second upper protruding portion 29 Protrusion 30 Linear body pressing part 32 Front mounting part 34 Rear mounting part 36 Front protruding part 38 Rear protruding part 40 First fixed pivot hole 42 Second fixed pivot hole 50 Movable gripping body 52 First link member mounting part 54 Second link member mounting part 60 Linear body holding part 62 Movable inner hole part 62A First movable moving inside Hole part 62B Second movable moving inside Hole part 66 First movable pivot hole 68 Second movable pivot hole 70 First link member 72 Link member main body part 74 Movable gripping body mounting part 76 Fixed gripping body mounting part 78 Operating member mounting part 80 Guide part 82 Narrow path part 84 Guide protrusion part 86 Guide edge (lower edge of the guide part) 88 Upper edge (of the guide part) 90 End part of the narrow path part 92 Upper edge part of the narrow path part 94 Side edge part of the narrow path part 96 Lower edge part of the narrow path part 98a First first pivot hole 98b Second second pivot hole 98c Third third pivot hole 100 Second link member 104 Movable gripping body mounting part 106 Fixed gripping body mounting part 108 Operating member mounting part 110 First pivot hole 112 Second pivot hole 114 Third pivot hole 120 Pivot 122 Pivot 124A Pivot 124B Pivot 126A Pivot 126B Pivot 130 Operating member 140 First connecting member 144 First contact part 146 First inclined part 148 First attachment part 150 First connecting pivot hole 152 First attachment hole 154 Second attachment hole 156 Third attachment hole 158 Second connecting pivot hole 160 Third connecting pivot hole 170 Second connecting member 174 Second contact part 176 Second inclined part 178 Second attachment part 180 Fourth connecting pivot hole 182 Fourth attachment hole 184 Fifth attachment hole 186 Sixth attachment hole 188 Fifth connecting pivot hole 190 Sixth connecting pivot hole 200 Fastener 222 Fastener 224 Fastener 300 Restricting part 302 Restricting part body 304 First body surface part 306 Second body surface part 308 Third body surface part 310 Fourth body surface part 312 Upper body part 314 Lower body part 316 Screw rod attachment hole 318 Seventh attachment hole 320 Eighth attachment hole 330 Slider 332 Ring part 334 Screw rod 336 Head part 338 Shank part 340 Holding part 342 Inner groove part 344 Stopping part 346 Slider attachment part 348 Attachment hole 350 Screw hole 352 Slider attachment screw 360, 362 Vertical wall 364 Engagement guide part 500 Rod-shaped expander 510 Cylindrical body 512 First attachment part 514 Side cylindrical part 516 Input shaft 518 Input part 520 Expanding body 522 Second attachment part 600 First wire support 602 Attachment part 604 First wire insertion area 610 Second wire support 612 Attachment part 614 Second wire insertion area 700 Rotating rod 702 Hook 1000 Live wire distribution tool W Covered electric wire P1 First part Part 2 of P2

Claims

1. A wire gripper comprising: a fixed gripper having a linear object holding portion; a movable gripper having a linear object holding portion that moves toward the linear object holding portion of the fixed gripper; and an operating member connected to the movable gripper via a distance adjustment mechanism and a link mechanism, wherein the link mechanism is constituted by a link member connected between the fixed gripper, the movable gripper, and the operating member, and the distance adjustment mechanism is a mechanism that adjusts the distance between the linear object holding portion of the fixed gripper and the linear object holding portion of the movable gripper using a guide mechanism configured to move the link member to move the movable gripper, and has a movement limiting mechanism that limits the movement of the movable gripper to maintain a constant distance between the linear object holding portion of the fixed gripper and the linear object holding portion of the movable gripper.

2. A wire gripper as described in claim 1, wherein the distance adjustment mechanism comprises a link mechanism for moving the movable gripping body, the link member constituting the link mechanism has a protruding guide portion at or near the center of its longitudinal direction, extending toward the side that pulls the operating member, and the movement restriction mechanism is constituted by a regulating portion constituting the guide mechanism installed between the guide portion and the operating member.

3. A wire gripper as claimed in claim 1 or 2, wherein the guide section has a small path formed in accordance with the trajectory of movement of the link member that moves the movable gripping body, and a guide edge formed around the small path, the regulating section that constitutes the distance adjustment mechanism is movably attached to the operating member in the vicinity of the guide section, the regulating section has an engaging guide section that constitutes a movement limiting mechanism in an area that engages with the guide edge formed around the small path, and a stop section that constitutes the movement limiting mechanism in an area that engages with the small path, and the guide section is configured to move the link member to the pulling side and pushing back side of the operating member as the regulating section moves, and to stop as the regulating section stops.

4. A wire gripper as claimed in claim 2 or 3, wherein the regulating section comprises a slider suspended between the operating member and the guide section protruding from the link member connected to the movable gripping body, the slider being attached to the operating member near one end thereof and being provided so as to be movable in the direction of the movable gripping body and the operating member, the slider being provided at its other end with an engaging guide section which engages with a guide edge formed around the small passage section of the guide section, and the regulating section is configured to fix the first link member in a certain position by stopping the engaging guide section engaged with the guide section when the movable gripping body is in a closed and / or open state.

5. A wire gripper as claimed in any one of claims 2 to 4, wherein the regulating section comprises a slider suspended between the operating member and the guide section protruding from the link member connected to the movable gripping body, the slider being attached to the operating member near one end thereof and being provided so as to be freely movable in the direction of the movable gripping body and the operating member, the slider being provided at the other end with a pin-shaped stop section which engages with the path section of the guide section, the stop section being formed so as to engage with the path section when the movable gripping body is in an open state to form a movement limiting mechanism which limits the movement of the link member, and / or so as to engage with the path section when the movable gripping body is in a closed state to form a movement limiting mechanism which limits the movement of the link member.

6. The guide portion is formed with a guide protrusion portion having a semicircular arc-shaped guide edge extending from the pulling side to the pushing back side of the operating member in accordance with the movement trajectory of the link member that moves the movable gripping body, from the pulling side to the pushing back side of the operating member, and the guide edge of the guide portion constitutes a distance adjustment mechanism and is formed on the lower end edge of the guide protrusion portion surrounding the small path portion of the guide portion, and is formed to move along the semicircular arc-shaped trajectory from the pulling side to the pushing back side of the operating member or from the pushing back side to the pulling side of the operating member as the engaging guide portion of the regulating portion moves, A wire gripper as described in any one of claims 1 to 5, wherein the regulating portion is configured so that when the movable gripping body is changed from a closed state to an open state, the engaging guide portion located at the dead end portion on the pushing-back side of the alley portion constituting the guide portion or at a guide edge in the vicinity thereof moves to the pulling side, and / or when the movable gripping body is changed from an open state to a closed state, the engaging guide portion located at the guide edge away from the dead end portion on the pulling side of the alley portion constituting the guide portion moves to the pushing-back side.

Images