TW202414938A - Thread tightener - Google Patents

Abstract

[Topic] Provide a tensioner that will not accidentally change the spacing between the upper gripper and the lower gripper. [Solution] The tensioner 10 comprises: 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 of the fixed gripper 20; and an operating member 130 that is connected to the movable gripper 50 via a spacing adjustment mechanism 12 and a connecting rod mechanism 18, wherein the connecting rod mechanism 18 is formed by connecting rod members 70 and 100 between the fixed gripper, the movable gripper and the operating member. The interval adjustment mechanism 12 is a mechanism for adjusting the interval 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 means of the guide mechanism 14. The guide mechanism 14 is configured to move the connecting rod member 70 to move the movable gripping body, and has a movement limiting mechanism 16 to limit the movement of the movable gripping body so as to keep the interval between the linear body pressing portion 30 of the fixed gripping body and the linear body holding portion 60 of the movable gripping body constant.

Description

Cable tensioner

Invention Field

The present invention relates to a wire tensioner, and more particularly to a wire tensioner for gripping a wire during a process of pulling the wire, such as when performing a process of cutting a coated wire.

Invention Background

When cutting wires, a live wire splitter is used to create slack in the separated part where the wires are pulled. Generally, such live wire splitters are constructed by connecting a wire tightener for gripping the wires to both ends of a retractable retractable shaft. Using such a live wire splitter, the wires are gripped by the tighteners at both ends, and the middle retractable shaft is retracted to relax the wires between the two tighteners into an arch shape. As a tool for gripping or holding wires in this way, a wire tightener is known (see patent document 1). Prior art document Patent document

Patent document 1: Japanese Patent Publication No. 2020-145818

Invention Summary Problem to be solved by the invention

The tightener disclosed in Reference 1 has a roughly spherical tightening part (head) located at the front end of the sliding member (eye ring twisting part) of the tightening part, which contacts the roughly central part of the bottom of the first connecting rod member (second connecting rod piece), and the eye ring twisting part is rotated to rotate the first connecting rod member in contact with the head of the tightening part, so that the movable gripping body (second wire gripping body) moves toward the side of the fixed gripping body (first wire gripping body), closing the linear body pressing part (first gripping groove) of the fixed gripping body and the linear body holding part (second gripping groove) of the movable gripping body, thereby gripping the coated wire. However, this tensioner may accidentally apply force to the connecting rod or the operating arm, thereby changing the distance between the upper and lower gripping bodies. Therefore, the main purpose of the present invention is to provide a tensioner that will not accidentally change the distance between the upper and lower gripping bodies. Means for solving the problem

The wire tensioner of the present invention is a wire tensioner, which is characterized by: It has: A fixed gripper having a linear body pressing portion; A movable gripper having a linear body holding portion that moves toward the linear body pressing portion of the fixed gripper; and An operating member connected to the movable gripper through a spacing adjustment mechanism and a connecting rod mechanism, The spacing adjustment mechanism is a mechanism that adjusts the spacing between the linear body pressing portion of the fixed gripper and the linear body holding portion of the movable gripper by a guiding mechanism, and has a movement limiting mechanism, which limits the movement of the movable gripper to keep the spacing between the linear body pressing portion of the fixed gripper and the linear body holding portion of the movable gripper constant. The tensioner of the present invention may be: The aforementioned interval adjustment mechanism has a connecting rod mechanism for moving the aforementioned movable gripping body, The connecting rod member constituting the aforementioned connecting rod mechanism is provided with a guide portion protruding from or near the center of the longitudinal direction thereof, and the aforementioned guide portion extends toward the side of pulling the aforementioned operating member, The aforementioned movement limiting mechanism is constituted by a limiting portion which is arranged between the aforementioned guide portion and the aforementioned operating member and constitutes the guiding mechanism. The tensioner of the present invention may be: The aforementioned guide portion is formed with a small path portion and a guide end edge, the aforementioned small path portion is arranged to penetrate the track of the aforementioned connecting rod member that moves the aforementioned movable gripping body, and the aforementioned guide end edge is formed around the aforementioned small path portion, The limiting portion constituting the aforementioned interval adjustment mechanism is movably installed on the aforementioned operating member near the aforementioned guide portion, The aforementioned limiting portion is provided with a locking guide portion constituting a movement limiting mechanism in an area that is engaged with the guide end edge formed around the aforementioned small path portion, and a stop portion constituting a movement limiting mechanism is provided in an area that is engaged with the aforementioned small path portion, The guide portion is configured to move the connecting rod member toward the pulling side and the pushing side of the operating member as the limiting portion moves, and stops as the limiting portion stops. The wire tensioner of the present invention may be: The limiting part is a slide member provided between the guide part protruding toward the connecting rod member connected to the movable gripping body and the operating member, The slide member is mounted on the operating member near one end thereof, and the slide member is arranged to be movable in the direction of the movable gripping body and the operating member, The slide member has an engaging guide part at its other end, which engages with the guide end edge formed around the path part of the guide part, The limiting part is configured to fix the first connecting rod member at a certain position by stopping the engaging guide part engaged with the guide part in the closed state and/or the open state of the movable gripping body. The tensioner of the present invention may be: The limiting part is a slide member provided between the guide part protruding toward the connecting rod member connected to the movable gripping body and the operating member, The slide member is mounted on the operating member near one end thereof, and the slide member is arranged to be movable in the direction of the movable gripping body and the operating member, The slide member is provided at its other end with a pin-shaped stopper engaged with the small path part of the guide part, The stopper is formed as follows: a movement limiting mechanism that engages with the small path part to limit the movement of the connecting rod member when the movable gripping body is in an open state, and/or a movement limiting mechanism that engages with the small path part to limit the movement of the connecting rod member when the movable gripping body is in a closed state. The wire tensioner of the present invention may be: The aforementioned guide portion is formed as a guide protrusion with a guide end edge, and the aforementioned guide end edge is a trajectory of the aforementioned connecting rod member that moves the aforementioned movable gripping body, covering from the pulling side of the aforementioned operating member to the push-back side, and extending from the pulling side of the aforementioned operating member to the push-back side. The aforementioned guide end edge of the aforementioned guide portion constitutes a spacing adjustment mechanism and is formed at the lower end edge of the guide protrusion. The aforementioned guide protrusion is the aforementioned path portion surrounding the aforementioned guide portion, and is formed to: as the engaging guide portion of the aforementioned limiting portion moves, it describes the aforementioned semi-circular arc trajectory and moves from the pulling side of the aforementioned operating member to the push-back side, or from the push-back side of the aforementioned operating member to the pulling side, The limiting part is configured such that when the movable gripping body is changed from a closed state to an open state, the end of the travel of the small path portion constituting the guide portion on the push-back side or the engaging guide portion of the guide end edge located near it moves to the pull-back 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 end edge on the side away from the pull-back side from the end of the travel of the small path portion constituting the guide portion moves to the push-back side. Effect of the invention

According to the present invention, a wire tensioner can be provided in which the interval between the upper wire grabbing body and the lower wire grabbing body will not be accidentally changed.

The above-mentioned object, other objects, features and advantages of the present invention will become more clearly understood from the following description of the embodiments of the present invention with reference to the accompanying drawings.

The form used to implement the invention

(Direction) In this specification, as shown in FIG. 2, the side of the pull-operating member is referred to as the pull-operating side or the right side, and the side of the push-operating member is referred to as the push-back side or the left side. In this specification, the front side shown in FIG. 1 is referred to as the front, the front side, or the near 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 side, the right side, and the left side is referred to as the left side, the left side.

(Wire tensioner) The wire tensioner 10 of the present invention comprises: 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 aforementioned linear body pressing portion 30 of the aforementioned fixed gripper 20; and an operating member 130 that is connected to the aforementioned movable gripper 50 via a spacing adjustment mechanism 12 and a connecting rod mechanism 18.

The aforementioned interval adjustment mechanism 12 is a mechanism for adjusting the interval between the linear body pressing portion 30 of the aforementioned fixed grasping body 20 and the linear body retaining portion 60 of the aforementioned movable grasping body 50 by means of a guiding mechanism 14. The interval adjustment mechanism 12 is mainly composed of a guiding protrusion 84, a limiting portion 300, a sliding member 330, a stopping portion 344 and an engaging guiding portion 364.

The aforementioned spacing adjustment mechanism 12 has a guiding mechanism 14 for guiding a movement limiting mechanism 16, and also has a movement limiting mechanism 16. The aforementioned movement limiting mechanism 60 is for keeping a constant spacing between the linear body pressing portion 30 of the aforementioned fixed grasping body 20 and the linear body holding portion 60 of the aforementioned movable grasping body 50, thereby limiting the movement of the aforementioned movable grasping body 50.

The interval adjustment mechanism 12 is installed on the connecting rod mechanism 18 for moving the movable gripping body 50. The connecting rod mechanism 18 is mainly composed of a fixed gripping body 20, a movable gripping body 50, a first connecting rod member 70, a second connecting rod member 100 and an operating member 130. The first connecting rod member 70 constituting the connecting rod mechanism 18 is provided with a guide portion 80 protruding from or near the center of the long side thereof. The guide portion 80 constitutes the guide mechanism 14 and extends toward the side of pulling the operating member 130.

The movement limiting mechanism 16 is constituted by the limiting portion 300 which is provided between the guide portion 80 formed on the first link member 70 and the operating member 130 and constitutes the guide mechanism 14 .

The movement limiting mechanism 16 is formed by a limiting portion 300 which is installed between the guiding portion 80 and the operating member 130 and constitutes the guiding mechanism 14 .

The guiding mechanism 14 is mainly composed of a guiding protrusion 84 , a limiting portion 300 , a stopping portion 344 and an engaging guiding portion 364 .

The guide portion 80 constitutes the interval adjustment mechanism 12, the guide mechanism 14 and the movement limiting mechanism 16, and has a guide protrusion 84 and a small path portion 82. The guide protrusion 84 constitutes the guide mechanism 14, and the small path portion 82 is provided to penetrate the track of the first link member 70 that moves the movable gripping body 50. The guide portion 80 is formed with a guide edge 86, and the guide edge 86 is formed around the small path portion 82.

The limiting portion 300 constituting the aforementioned interval adjustment mechanism 12 is movably mounted on the aforementioned operating member 130 near the aforementioned guide portion 80. The aforementioned limiting portion 300 is provided with an engaging guide portion 364 constituting the movement limiting mechanism 16 in the area engaged with the guide end edge 86 formed around the aforementioned small path portion 82, and a stop portion 344 constituting the movement limiting mechanism 16 is provided in the area engaged with the aforementioned small path portion 82. The aforementioned guide portion 80 is configured such that: as the aforementioned limiting portion 300 moves, the first connecting rod member 70 constituting the aforementioned connecting rod mechanism 18 moves toward the pulling side and the pushing back side of the aforementioned operating member 130, and stops as the limiting portion 300 stops.

The limiting part 300 is provided with a sliding member 330 between the guide part 80 and the operating member 130. The guide part 80 protrudes toward the first connecting rod member 70 constituting the connecting rod mechanism 18. The connecting rod mechanism 18 is connected to the movable gripping body 50. The sliding member 330 is mounted on the operating member 130 near one end thereof, and the sliding member 330 is arranged to be movable in the direction of the movable gripping body 50 and the operating member 130. The sliding member 330 has an engaging guide portion 364 engaged with the guide edge 86 at its other end, and the guide edge 86 is formed around the small path portion 82 of the guide portion 80. The limiting 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 when the movable gripping body 50 is closed and/or opened.

The sliding member 330 is mounted on the operating member 130 near one end thereof, and the sliding member 330 is configured to be movable in the direction of the movable gripping body 50 and the operating member 130, and has a pin-shaped stopper 344 at the other end thereof, and the stopper 344 engages with the small path portion 82 of the guide portion 80. The stopper 344 is formed to constitute a movement limiting mechanism 16 that engages with the small path portion 82 to limit the movement of the link member when the movable gripping body 50 is in an open state.

The guide portion 80 is formed with a guide protrusion 84 having the guide edge 86. The guide edge 86 is a semicircular arc extending from the pull side of the operating member 130 toward the push back side, in accordance with the trajectory of the movement of the connecting rod member that moves the movable gripping body 50. The guide edge 86 of the guide portion 80 constitutes the interval adjustment mechanism 12 and is formed at the lower edge of the guide protrusion 84 of the path portion 82 surrounding the guide portion 80, and is formed to describe the semicircular arc trajectory as the engaging guide portion 364 of the limiting portion moves, and moves from the pulling side of the operating member 130 to the pushing side or from the pushing side of the operating member 130 to the pulling side. The limiting portion 300 is configured such that when the movable gripping body 50 is changed from a closed state to an open state, the engaging guide portion 364 of the guide edge 86 located at or near the end of the path portion 82 on the push-back side of the guide portion 80 moves toward the pull-back side, and/or, when the movable gripping body 50 is changed from an open state to a closed state, the engaging guide portion 364 of the guide edge 86 located on the side away from the pull-back side from the end of the path portion 90 of the guide portion 80 moves toward the push-back side.

The tightener 10 of the embodiment of the present invention is: The slide member 330 disposed between the guide portion 80 protruding toward the first connecting rod member 70 connected to the movable gripping body 50 and the operating member 130 has: A screw 334; A ring portion 332 disposed at one end of the screw 334; and A pin-shaped stop portion 344 disposed at the other end of the screw 334, The guide portion 80 is formed with a semicircular path portion 82 in accordance with the trajectory of the first connecting rod member 70 that moves the movable gripping body 50, The limiting portion 300 is formed with a retaining portion 340, and the retaining portion 340 is opposite to both sides of the hole edge of the movable gripping body 50 side of the path portion 82 of the guide portion 80, The retaining portion 340 of the limiting portion 300 is configured to slide from the edge or vicinity of the push-back side of the small path portion 82 to the open state, cover the edge or vicinity of the pull-back side of the small path portion 82, and contact the hole edge of the small path portion 82.

As shown in FIG. 10 , the tensioner 10 is installed on the left and right of the rod-shaped retractor 500 constituting the live wire splitting tool 1000. The tensioners 10 installed on the left and right thereof constitute a pair of the first tensioner 10A and the second tensioner 10B. After the pair of first tensioners 10A and second tensioners 10B installed on the rod-shaped retractor 500 constituting the live wire splitting tool 1000 hold the covered wire W, the distance between the pair of first tensioners 10A and second tensioners 10B is shortened, so that the covered wire W is bent away from the cylindrical body 510 and the retractor 520 of the live wire splitting tool 1000, and the covered wire W is cut by cutting the bent portion of the covered wire W with a cutting knife. Then, when the pair of first tensioners 10A and second tensioners 10B installed on the left and right of the rod-shaped retractor 500 constituting the live wire splitting tool 1000 hold the covered wire W, and after holding the covered wire W, the distance between the first tensioner 10A and the second tensioner 10B is shortened, so that the covered wire W is bent in the direction away from the cylindrical body 510 and the retractor 520 of the rod-shaped retractor 500 of the live wire splitting tool 1000, a large force is applied to the first connecting rod member 70, the second connecting rod member 100 and the covered wire W.

(First embodiment) Fig. 1 is a three-dimensional diagram of a tensioner of the first embodiment of the present invention. Fig. 2 is a front diagram of a partial cross section of the tensioner of the first embodiment of the present invention. The tensioner 10 of the first embodiment of the present invention is as shown in Figs. 1 to 4, and 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 30 of the fixed gripping body 20; and an operating member 130 that is connected to the movable gripping body 50 via a spacing adjustment mechanism 12 and a link mechanism 18. The aforementioned connecting rod mechanism 18 is composed of the first connecting rod member 70 and the second connecting rod member 100 connected between the fixed gripping body 20, the movable gripping body 50 and the operating member 130. The aforementioned interval adjustment mechanism 12 is composed of: the first connecting rod member 70 and the second connecting rod member 100 are moved by the guide mechanism 14 arranged between the first connecting rod member 70 and the operating member 130, so that the aforementioned first connecting rod member 70 moves and the movable gripping body 50 moves.

The interval adjustment mechanism 12 is a mechanism that adjusts the interval 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 means of the guide mechanism 14. The interval adjustment mechanism 12 is mainly composed of the guide protrusion 84 formed on the first link member 70, the limiting portion 300, the sliding member 330, the stop portion 344 and the engaging guide portion 364. The limiting portion 300 has: the stop portion 344, which is a small path portion 82 of the guide portion 80 of the sliding member 330 installed on the operating member 130 from the limiting portion body 302; and the engaging guide portion 364, which is engaged with the guide end edge (lower end edge of the guide portion) 86 of the guide portion 80.

The aforementioned interval adjustment mechanism 12 has a guiding mechanism 14 that guides a movement limiting mechanism 16, and also has a movement limiting mechanism 16. The aforementioned movement limiting mechanism 16 limits the movement of the aforementioned movable grasping body 50 to keep the interval between the linear body pressing portion 30 of the aforementioned fixed grasping body 20 and the linear body holding portion 60 of the aforementioned movable grasping body 50 constant.

The interval adjustment mechanism 12 is arranged on the connecting rod mechanism 18 and the guide mechanism 14 for moving the movable gripping body 50. The connecting rod mechanism 18 is mainly composed of a fixed gripping body 20, a movable gripping body 50, a first connecting rod member 70 connected to 20 and 50, a second connecting rod member 100 connected to the fixed gripping body 20 and the movable gripping body 50, and an operating member 130 connected to the first connecting rod member 70 and the second connecting rod member 100. The first connecting rod member 70 constituting the connecting rod mechanism 18 is provided with a guide portion 80 protruding from or near the center portion in the longitudinal direction thereof, and the guide portion 80 extends toward the side of pulling the operating member 130 and constitutes the guide mechanism 14.

The guiding mechanism 14 is mainly composed of: a small path portion 82 and a guiding protrusion portion 84 constituting the guiding portion 80, a guiding protrusion portion 84, an engaging guiding portion 364 at the front end of the upper portion of the sliding member 330 constituting the limiting portion 300, and a stopping portion 344 and an engaging guiding portion 364 arranged on the retaining portion 340 of the sliding member 330 constituting the limiting portion 300.

The movement limiting mechanism 16 is composed of an engaging guide portion 364 and a stop portion 344 which are arranged between the guide portion 80 formed on the first link member 70 and the operating member 130 and constitute the head portion 336 of the limiting portion 300 of the guide mechanism 14 .

(Fixed gripping body) As shown in FIG. 2 , the fixed gripping body 20 has a linear body pressing portion 30, the front side of which is generally concave, and is used to hold the coated wire W from the upper side, and the cross-sectional shape is generally arc-shaped. The linear body pressing portion 30 is composed of a groove that extends from the right side of the fixed gripping body 20 to the left side, and is made of metal as a whole or partially of synthetic resin, etc.

As shown in FIG. 1 and FIG. 2 , the fixed gripping body 20 has: a first connecting rod member mounting portion 22 having a substantially U-shaped front side and used to mount the first connecting rod member 70; and a second connecting rod member mounting portion 24 having a substantially U-shaped front side and used to mount the second connecting rod member 100. The first connecting rod member mounting portion 22 and the second connecting rod member mounting portion 24 are parts constituting the connecting rod mechanism 18, and are symmetrical in shape, with a certain interval between them. The first connecting rod member mounting portion 22 on one side is divided into the side of the pulling operating member 130, and the second connecting rod member mounting portion 24 on the other side is divided into the push-back side, forming a pair at the lower part of the linear body pressing portion 30.

The second connecting rod member mounting portion 24 of the fixed gripping body 20 has: a front mounting portion 32, the shape of the front side is roughly semicircular, and has: a front protrusion 36 of roughly conical trapezoidal shape, which is formed to protrude toward the front side from the approximate center of the front side surface of the front mounting portion 32, so that the second connecting rod member 100 can rotatably contact the surface of the front side. The first connecting rod member mounting portion 22 of the fixed gripping body 20 has a rear mounting portion 34 of roughly semicircular shape on the front side, and has a rear protrusion 38 of roughly conical trapezoidal shape, and the aforementioned rear protrusion 38 is formed to protrude toward the front side from the approximate center of the front side surface of the rear mounting portion 34, so that the first connecting rod member 70 can rotatably contact the surface of the front side.

The fixed gripping body 20 has: a first fixed pivot hole 40 with a roughly circular cross section, which is formed in a roughly horizontal direction from the roughly center of the surface on the front side of the second connecting rod member mounting portion 24 toward the roughly center of the surface on the back side of the second connecting rod member mounting portion 24. The fixed gripping body 20 has: a second fixed pivot hole 42 with a roughly circular cross section, which is formed in a roughly horizontal direction from the roughly center of the surface on the front side of the first connecting rod member mounting portion 22 toward the roughly center of the surface on the back side of the first connecting rod member mounting portion 22. The second fixed pivot hole 42 is formed on the right side (pulling side) of the lower part of the fixed gripping body 20, and the first fixed pivot hole 40 is formed on the left side (pulling back side) of the lower part of the fixed gripping body 20.

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, so that after the first tensioner 10A and the second tensioner 10B grip the covered electric wire W, the distance between the first tensioner 10A and the second tensioner 10B is shortened to make the covered electric wire W bend in a direction away from the tubular body 510 and the telescopic body 520 of the live wire splitting tool 1000. The fixed gripping body 20 is difficult to be destroyed by the force borne by the covered electric wire W from the right and left sides of the linear body pressing portion 30 toward the center (force from the right side toward the left side and/or force from the left side toward the right side).

The fixed gripping body 20 has a first upper protrusion 26 extending from the opposite side toward the near front side and having a roughly arc-shaped cross section on the upper surface, and further has a second upper protrusion 28 extending from the opposite side toward the near front side at a certain interval from the first upper protrusion 26 and having a roughly arc-shaped cross section. The first upper protrusion 26 and the second upper protrusion 28 are formed to be divided into left and right at a certain interval.

The fixed gripping body 20 has a first back protrusion protruding from the upper part of the back side toward the lower part of the back side and having a substantially convex cross-sectional shape, so that the fixed gripping body 20 is difficult to be destroyed by the force from the side of the upper surface portion toward the side of the lower surface portion (force from the upper side toward the lower side) and/or the force from the side of the lower surface portion toward the side of the upper surface portion (force from the lower side toward the upper side) received by the second connecting rod member 100. The fixed gripping body 20 has a second back protrusion protruding from the upper part of the back side toward the lower part of the back side and the back side is roughly convex in shape, so that the fixed gripping body 20 is more difficult to be destroyed by the force from the side of the upper surface portion toward the side of the lower surface portion (force from the upper side toward the lower side) and/or the force from the side of the lower surface portion toward the side of the upper surface portion (force from the lower side toward the upper side) received from the first link member 70.

The first back protrusion on one side is a protrusion extending long from the upper side to the lower side, and the second back protrusion on the other side is a protrusion extending long from the upper side to the lower side. The first back protrusion and the second back protrusion are formed to be separated into left and right sides with a certain interval.

The fixed gripping body 20 has a roughly rectangular protrusion 29 to prevent the linear body pressing portion 30 from being damaged by the force applied from the covered wire W when the first tensioner 10A and the second tensioner 10B are pulled closer to each other to make the covered wire W bend away from the tubular body 510 and the telescopic body 520 of the live wire splitting tool 1000 after the covered wire W is grasped between the linear body pressing portion 30 and the rear mounting portion 34 of the fixed gripping body 20 and the first connecting rod member 70.

(Movable gripper) As shown in Figs. 1 and 2, the movable gripper 50 has a generally concave shape on the front side and is made entirely of metal or partially of synthetic resin or the like. The movable gripper 50 has a linear body holding portion 60 on the upper surface of the body having a generally concave shape on the front side. The linear body holding portion 60 holds the coated wire W from the bottom side and has a generally arc-shaped cross-section on the side surface. The linear body holding portion 60 is formed by a groove that is continuous from the right side of the movable gripper 50 to the left side.

As shown in FIGS. 1 and 2 , the movable gripping body 50 has, at the lower part of the linear body holding portion 60: a first connecting rod member mounting portion 52, which is roughly U-shaped on the front side, for mounting the first connecting rod member 70; and a second connecting rod member mounting portion 54, which is roughly U-shaped on the front side, for mounting the second connecting rod member 100. The first connecting rod member mounting portion 52 and the second connecting rod member mounting portion 54 are parts constituting the connecting rod mechanism 18, and are formed to be divided into left and right at a certain interval. The first connecting rod member mounting portion 52 is formed on the right side of the movable gripping body 50 in this embodiment, and the second connecting rod member mounting portion 54 is formed on the left side of the movable gripping body 50 in this embodiment.

The movable gripper 50 has a movable inner hole portion 62 for inserting the first connecting rod member 70 and the second connecting rod member 100. The first connecting rod member mounting portion 52 has a first movable inner hole portion 62A for inserting the first connecting rod member 70, and the second connecting rod member mounting portion 54 has a second movable inner hole portion 62B for inserting the second connecting rod member 100. The first movable inner hole portion 62A and the second movable inner hole portion 62B are bilaterally symmetrical and arranged in a straight line.

The first connecting rod member mounting portion 52 has a first movable pivot hole 66 at its approximate center, which is provided through the first connecting rod member mounting portion 52 with the first movable inner hole portion 62A sandwiched therebetween in a substantially horizontal direction, and has a substantially circular cross-sectional shape. The second connecting rod member mounting portion 54 has a second movable pivot hole 68 at its approximate center, which is provided through the second connecting rod member mounting portion 54 with the second movable inner hole portion 62B sandwiched therebetween in a substantially horizontal direction, and has a substantially circular cross-sectional shape. In this embodiment, the first movable pivot hole 66 is formed on the right side (pulling side) of the lower part of the movable gripping body 50, and the second movable pivot hole 68 is formed on the left side (pulling side) of the lower part of the movable gripping body 50 in this embodiment.

(Link mechanism) As shown in FIG3 , the first link member 70 constituting the link mechanism 18 includes: a link member body 72 having a metal plate-like body with a substantially F-shaped front side; and a guide portion 80 having a substantially arc-shaped front side.

The connecting rod member body 72 is formed at the lower part of the linear body holding part 60 with: a movable gripping body mounting part 74 constituting an area mounted on the movable gripping body 50; a fixed gripping body mounting part 76 constituting an area mounted on the fixed gripping body 20; and an operating member mounting part 78 constituting an area mounted on the operating member 130. In this embodiment, the movable gripping body mounting part 74 is formed on the right side of the movable gripping body 50, and the fixed gripping body mounting part 76 is formed on the left side of the movable gripping body 50. The movable gripping body mounting part 74 and the fixed gripping body mounting part 76 are symmetrical to each other and are formed to be divided into left and right at a certain interval.

In the movable gripper mounting portion 74, a first pivot hole 98a is provided through the surface to cover the back. In the fixed gripper mounting portion 76, a second pivot hole 98b is provided through the surface to cover the back. In the operating member mounting portion 78, a third pivot hole 98c is provided through the surface to cover the back.

(Guide mechanism of connecting rod mechanism) The first connecting rod member 70 further has: The guide portion 80 is formed to protrude from the central portion of the connecting rod member body 72 toward the pulling operation member 130, and the shape of the front side is roughly semicircular. The guide portion 80 is a portion constituting the interval adjustment mechanism 12, the guide mechanism 14 and the movement limiting mechanism 16, and is a plate-like body that is roughly semicircular in shape when viewed from the front, and is integrally formed with the connecting rod member body 72. The guide portion 80 is configured to hang down from the connecting rod member body 72 toward the bottom, that is, toward the direction away from the movable gripping body 50.

The guide portion 80 is provided with a small path portion 82 extending from the side of the push-back operating member 130 toward the side of the pull-back operating member 130 and having a substantially semicircular arc shape when viewed from the front. The guide portion 80 is provided with a guide protrusion 84 around the small path portion 82. The guide protrusion 84 is formed in a circular ring shape or an inverted U shape that is continuous with the connecting rod member body 72. The guide protrusion 84 has a substantially semicircular arc-shaped guide edge 86 formed at the lower end edge of the lower side, and an upper edge 88 (of the guide portion) is formed on the upper side in a manner facing the guide edge 86.

The path portion 82 is formed with a path portion end portion 90 on the side of the connecting rod member body portion 72, and the path portion upper edge portion 92 extends from the upper side of the path portion end portion 90 toward the pulling operation member 130, and the path portion lower edge portion 96 extends from the lower side of the path portion end portion 90 toward the pulling operation member 130. Furthermore, the path portion 82 is formed with a path portion side edge portion 94 facing the path portion end portion 90.

The path portion 82 is separated by an equal distance from the self-guiding end edge 86 and the (guide portion) upper end edge 88, and the path portion upper edge 92 and the path portion lower edge 96 are formed to be roughly parallel. The difference in height between the path portion end portion 90 and the path portion side edge portion 94 corresponds to the moving distance of the movable gripping body 50 in the up-down direction, that is, the distance that can be pulled apart or reduced from the fixed gripping body 20. That is, corresponding to the distance that the movable gripping body 50 is far away from the fixed gripping body 20, the path portion side edge portion 94 is formed to be located above or below the path portion end portion 90.

The guide end edge 86 of the guide portion 80 is as shown in FIG. 4 , and is configured as follows: by operating the operating member 130 , the engaging guide portion 364 of the sliding member 330 moves from the side of the end portion 90 of the left path portion to the right side, thereby the movable gripping body 50 moves upward, that is, toward the fixed gripping body 20 .

The first connecting rod member 70 has: a first first pivot hole 98a, which is provided in the first connecting rod member 70 from the surface toward the back and in a substantially horizontal direction, and has a substantially circular cross section. The first connecting rod member 70 has: a second second pivot hole 98b, which is provided in the first connecting rod member 70 from the surface toward the back and in a substantially horizontal direction, and has a substantially circular cross section. The first connecting rod member 70 has: a third third pivot hole 98c, which is provided in the first connecting rod member 70 from the surface toward the back and in a substantially horizontal direction, and has a substantially circular cross section. The first first pivot hole 98a is formed on the right side (pulling side) of the upper portion of the first connecting rod member 70, and the second second pivot hole 98b is formed on the left side (pulling side) of the upper portion of the first connecting rod member 70. The third third pivot hole 98c is formed on the lower portion of the first connecting rod member 70.

(Link mechanism) The second link member 100 is a member that is combined with the first link member 70 to form the link mechanism 18, and is formed of a metal plate-like body whose front side is roughly in the shape of an inverted L-letter. The second link member 100 has: a movable gripping body mounting portion 104 that is mounted on the movable gripping body 50; a fixed gripping body mounting portion 106 that is mounted on the fixed gripping body 20; and an operating member mounting portion 108 that is mounted on the operating member 130.

The movable gripper mounting portion 104 is formed on the right side of the second link member 100 (the side of the pull-operating member 130) with a hole having an arc-shaped cross section formed from the surface covering the back as the center, and the fixed gripper mounting portion 106 is formed on the left side of the second link member 100 (the side of the push-back operating member 130) with a hole having an arc-shaped cross section formed from the surface covering the back as the center. The operating member mounting portion 108 is formed below the second link member 100 with a hole having an arc-shaped cross section formed from the surface covering the back as the center.

The movable gripper mounting portion 104 of the second connecting rod member 100 has: a first pivot hole 110, which is provided in the second connecting rod member 100 from the surface to the back and penetrates in a substantially horizontal direction, and is substantially cylindrical. The fixed gripper mounting portion 106 of the second connecting rod member 100 has: a second pivot hole 112, which is provided in the second connecting rod member 100 from the surface to the back and penetrates in a substantially horizontal direction, and is substantially cylindrical. The first pivot hole 110 of the movable gripper mounting portion 104 and the second pivot hole 112 of the fixed gripper mounting portion 106 are symmetrical in left and right directions and are formed to be divided into left and right at a certain interval. The operating member mounting portion 108 of the second connecting rod member 100 has: a third pivot hole 114, which is provided in the second connecting rod member 100 from the surface to the back and is substantially horizontally penetrated and is substantially cylindrical. The first pivot hole 110 is formed on the right side of the upper part of the second connecting rod member 100 (the side of the pull-in operating member 130), and the second pivot hole 112 is formed on the left side of the upper part of the second connecting rod member 100 (the side of the pull-back operating member 130). The third pivot hole 114 is formed on the lower part of the second connecting rod member 100.

(Operating member) The operating member 130 is a member that is combined with the aforementioned first connecting rod member 70 and the second connecting rod member 100 to form the connecting rod mechanism 18. 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). Between the pair of connecting members, there is a limiting part 300, which is a sliding member mechanism that causes the guide part 80 provided on the first connecting rod member 70 to move. The limiting part 300 is a member that constitutes the interval adjustment mechanism 12, the guide mechanism 14 and the movement limiting mechanism 16. The sliding member 330 is installed on the operating member 130 through the limiting part body 302.

The first connection member 140 is a plate-shaped body that is substantially arcuate in front view and substantially bent in plan view.

The first connecting member 140 is as follows: On the side where the first connecting member 140 is pulled, i.e., the right side, there is: a first contact portion 144, which is a plate-like body that is roughly wavy in front view and roughly flat in plane view, There is: a first inclined portion 146, which is continued from the first contact portion 144 and inclined 25° to 30° toward the front side relative to the first contact portion 144, and is a plate-like body that is roughly rectangular in front view and roughly flat in plane view, There is: a first mounting portion 148, which is continued from the first inclined portion 146, and inclined 150° to 155° toward the back side relative to the first inclined portion 146, and is a plate-like body that is roughly arc-shaped in front view and roughly flat in plane view.

The first contact portion 144 of the first connecting member 140 is as follows: It has: a first connecting pivot hole 150, which is provided in the first connecting member 140 from the surface covering the back side in a substantially horizontal direction, and has a substantially circular cross section, It has: a first mounting hole 152, which is provided in the first connecting member 140 closer to the right side than the first connecting pivot hole 150, and is provided in the first connecting member 140 from the surface covering the back side in a substantially horizontal direction, and has a substantially circular cross section.

The first mounting portion 148 of the first connecting member 140 is as follows: It has: a second mounting hole 154, which is provided in the first connecting member 140 from the surface covering the back side in a substantially horizontal direction, and has a substantially circular cross section. On the left side of the second mounting hole 154, there is: a third mounting hole 156, which is provided in the first connecting member 140 from the surface covering the back side in a substantially horizontal direction, and has a substantially circular cross section. The second mounting hole 154 and the third mounting hole 156 are arranged side by side at a certain interval.

The first mounting portion 148 of the first connecting member 140 has: a second connecting pivot hole 158, which is provided in the first connecting member 140 from the surface covering the back side in a substantially horizontal direction, and has a substantially circular cross section. The first mounting portion 148 of the first connecting member 140 has: a third connecting pivot hole 160, which is provided in the first connecting member 140 from the surface covering the back side in a substantially horizontal direction, and has a substantially circular cross section, and is located closer to the left side than the first mounting portion 148.

The second connection member 170 is a plate-shaped body that is substantially arcuate in front view and substantially curved in plan view.

The second connecting member 170 is as follows: On the side where the second connecting member 170 is pulled, i.e., the right side, there is: a second contact portion 174, which is a plate-like body that is roughly wavy in front view and roughly flat in plane view, There is: a second inclined portion 176, which is a plate-like body that continues from the second contact portion 174, is inclined 25° to 30° toward the back side relative to the second contact portion 174, is roughly rectangular in front view, and is roughly flat in plane view, There is: a second mounting portion 178, which continues from the second inclined portion 176, is inclined 150° to 155° toward the front side relative to the second inclined portion 176, is roughly arc-shaped in front view, and is roughly flat in plane view.

The second contact portion 174 of the second connecting member 170 has: The fourth connecting pivot hole 180 is provided in the second connecting member 170 from the surface covering the back side in a substantially horizontal direction, and the cross section is substantially circular, On the right side of the fourth connecting pivot hole 180, there is: the fourth mounting hole 182 is provided in the second connecting member 170 from the surface covering the back side in a substantially horizontal direction, and the cross section is substantially circular.

The second mounting portion 178 of the second connecting member 170 has: The fifth mounting hole 184 is provided in the second connecting member 170 from the surface covering the back side in a substantially horizontal direction, and the cross section is substantially circular, On the left side of the fifth mounting hole 184, there is: the sixth mounting hole 186 is provided in the second connecting member 170 from the surface covering the back side in a substantially horizontal direction, and the cross section is substantially circular. The fifth mounting hole 184 and the sixth mounting hole 186 are arranged side by side at a certain interval.

The second mounting portion 178 of the second connecting member 170 has: a fifth connecting pivot hole 188, which is provided in the second connecting member 170 from the surface covering the back side in a substantially horizontal direction, and has a substantially circular cross section. The second mounting portion 178 of the second connecting member 170 has: The sixth connecting pivot hole 190, which is provided in the second connecting member 170 from the surface covering the back side in a substantially horizontal direction, and has a substantially circular cross section.

The operating member 130 is connected in such a way that the first connecting pivot hole 150 and the fourth connecting pivot hole 180 are connected, and the first mounting hole 152 and the fourth mounting hole 182 are connected, so that the back side surface of the first contact portion 144 of the first connecting member 140 contacts the front side surface of the second contact portion 174 of the second connecting member 170, and the fixing assembly 200 composed of bolts and screws is embedded in the first mounting hole 152 and the fourth mounting hole 182, and the first connecting member 140 and the second connecting member 170 are fixed by the fixing assembly 200.

The operating member 130 is an area formed between the first connecting rod member 70 and the second connecting rod member 100 inserted into the opposing side surfaces of the first inclined portion 146 and the first mounting portion 148 of the first connecting member 140 and the near-front side surfaces of the second inclined portion 176 and the second mounting portion 178 of the second connecting member 170, and the first connecting rod member 70 and the second connecting rod member 100 are rotatably mounted by the pivot 120 and the pivot 122. In this embodiment, the operating member mounting portion 78 of the first link member 70 is mounted on the operating member 130 via the pivot 120, and the operating member mounting portion 108 of the second link member 100 is mounted on the operating member 130 via the pivot 122.

(Interval adjustment mechanism, guide mechanism, movement limiting mechanism) The limiting part 300 has: a limiting part body 302, a sliding member 330 mounted on the limiting part body 302, and a retaining part 340 mounted on the front end of the sliding member 330, and is a part that constitutes the interval adjustment mechanism 12, the guide mechanism 14 and the movement limiting mechanism 16.

The limiting part body 302 is roughly rectangular in shape, and has a first body surface part 304 on the front side, which is roughly rectangular in shape when viewed from the front and has a flat surface, and has a second body surface part 306 on the right side, which is roughly rectangular in shape when viewed from the side, and has a third body surface part 308 on the back side, which is roughly rectangular in shape when viewed from the back and has a flat surface, and has a fourth body surface part 310 on the left side, which is roughly rectangular in shape when viewed from the side. The limiting part body 302 is: and has a body upper surface part 312 on the top, which is roughly rectangular in shape when viewed from the plane side, and has a body lower surface part 314 on the bottom, which is roughly rectangular in shape when viewed from the bottom side.

The limiting part body 302 has a screw mounting hole 316 with a roughly circular cross-section. The screw mounting hole 316 is formed in the inner part of the limiting part body 302 along a roughly vertical direction from the roughly center of the upper surface part 312 of the body toward the roughly center of the lower surface part 314 of the body, for the sliding member 330 to be rotatably inserted, and a thread groove is engraved on the surface. The limiting part body 302 has: the 7th mounting hole 318, which is formed in the interior of the limiting part body 302 along the approximately horizontal direction from the approximately center of the first body surface part 304 near the second body surface part 306 toward the approximately center of the third body surface part 308 near the second body surface part 306, and the cross section is approximately circular, and has: the 8th mounting hole 320, which is formed in the interior of the limiting part body 302 along the approximately horizontal direction from the approximately center of the first body surface part 304 near the fourth body surface part 310 toward the approximately center of the third body surface part 308 near the fourth body surface part 310, and the cross section is approximately circular.

As shown in FIG. 2A , the slider 330 has a ring 332 at one end, which is an endless ring or a ring with a partial notch, and a generally cylindrical screw 334, which is formed by extending from the ring 332 and has a thread groove formed on the surface. The end of the screw 334 opposite to the ring 332 has a retaining portion 340 into which the screw 334 is rotatably inserted. The slider 330 has a head 336 for mounting the retaining portion 340 on the front end of the upper portion thereof, and a neck 338. The cross-sections of the head 336 and the neck 338 are circular. The retaining portion 340 is a roughly columnar body, and has: an inner groove portion 342 for internally setting the guide portion 80 above it; and a slider mounting portion 346 for mounting the slider 330 below it. The inner groove portion 342 is a groove that penetrates from the upper end of the retaining portion 340 toward the bottom and is roughly U-shaped when viewed from the side. The inner groove portion 342 is formed with a planar vertical wall 360 and a vertical wall 362 at the front and rear that slide with the front and rear surfaces of the guide portion 80 of the first connecting rod member 70, and a snap-fit guide portion 364 that engages with the lower edge 86 of the guide portion 80 of the first connecting rod member 70 is formed at the bottom of the groove below. The slider mounting portion 346 of the retaining portion 340 is a mounting hole 348 having an internal thread formed on its inner wall, and is configured so that the head 336 of the slider 330 is embedded in the mounting hole 348. In addition, the slider mounting portion 346 has a screw hole 350 extending from the outer surface toward the mounting hole 348, and is configured so that the slider mounting screw 352 can be screwed into the screw hole 350. The retaining portion 340 is mounted on the slider 330 by fitting the head 336 of the slider 330 into the mounting hole 348 and screwing the slider mounting screw 352 into the screw hole 350 from the outside. The head 336 and the neck 338 of the slider 330 are rotatably mounted on the retaining portion 340 in the mounting hole 348 of the retaining portion 340.

The retaining portion 340 is inserted into the inner groove 342 in such a manner that the surface of the guide portion 80 is parallel to the groove of the inner groove 342, and the stop portion 344 is installed so that it can be inserted into the upper end edge 88 of the guide portion 80 and move along the surface of the front and back sides of the guide portion 80.

The sliding member 330 is mounted on the limiting portion body 302 by allowing the screw 334 of the sliding member 330 to rotatably engage with the screw mounting hole 316 having a threaded groove engraved on the side surface of the limiting portion body 302.

The limiting part 300 is mounted on the operating member 130 by mounting the limiting part body 302 on the operating member 130. The limiting part body 302 is as follows: The 7th mounting hole 318 of the limiting part body 302 is continuous with the 2nd mounting hole 154 of the 1st connecting member 140 and the 5th mounting hole 184 of the 2nd connecting member 170, and the 8th mounting hole 320 of the limiting part body 302 is continuous with the 3rd mounting hole 156 of the 1st connecting member 140 and the 6th mounting hole 186 of the 2nd connecting member 170, so that the 1st body surface part 304 of the limiting part body 302 is in contact with the 1st inclined part 146 of the 1st connecting member 140, and the 3rd body surface part 308 of the limiting part body 302 is inserted with the surface on the back side in contact with the 6th mounting hole 186 of the 2nd connecting member 170. Moreover, the limiting part 300 is: The fixing device 222 is embedded in the 7th mounting hole 318, the 2nd mounting hole 154 and the 5th mounting hole 184, and the fixing device 224 is embedded in the 8th mounting hole 320, the 3rd mounting hole 156 and the 6th mounting hole 186, and the 1st body surface part 304 of the limiting part 300 is fixed to the 1st inclined part 146 of the 1st connecting member 140 by the fixing devices 222 and 224, and the 3rd body surface part 308 of the limiting part 300 is fixed to the 6th mounting hole 186 of the 2nd connecting member 170, thereby being installed on the operating member 130.

(Structure of interval adjustment mechanism, guide mechanism, movement limiting mechanism and connecting rod mechanism) Figure 1 is a three-dimensional diagram of the tensioner of the first embodiment of the present invention. Figure 2A is a front diagram of the tensioner shown in Figure 1 with a partial cross section. Figure 2B (A) is a diagram showing the function of the tensioner of the first embodiment of the present invention. Figure 2B (B) is a diagram of the tensioner shown in Figure 2B (A) from the A arrow direction. Figure 2B (C) is a diagram of the tensioner shown in Figure 2B (A) from the B arrow direction. Figure 3 is a diagram of the first connecting rod component. As shown in FIG. 1 and FIG. 2, the first connecting rod member 70 is rotatably mounted on the fixed gripping body 20 by making the second fixed pivot hole 42 of the first connecting rod member mounting portion 22 of the fixed gripping body 20 and the second second pivot hole 98b of the fixed gripping body mounting portion 76 of the first connecting rod member 70 continuous, so that the surface of the front side of the rear protrusion 38 of the first connecting rod member mounting portion 22 of the fixed gripping body 20 faces the surface of the fixed gripping body mounting portion 76 of the first connecting rod member 70, and the pivot 126B is embedded in the second fixed pivot hole 42 of the fixed gripping body 20 and the second second pivot hole 98b of the first connecting rod member 70, as shown in FIG. 1 and FIG. 2. As shown in FIGS. 1 and 2 , the first connecting rod member 70 is rotatably mounted on the movable gripping body 50 by making the second movable pivot hole 68 of the first connecting rod member mounting portion 52 of the movable gripping body 50 and the first first pivot hole 98a of the first connecting rod member 70 continuous, so that the inner surface of the first connecting rod member mounting portion 52 of the movable gripping body 50 contacts the surface and back surface of the first connecting rod member 70, and the pivot 126A is embedded in the second movable pivot hole 68 of the movable gripping body 50 and the first first pivot hole 98a of the first connecting rod member 70. As shown in FIGS. 1 and 2 , the first connecting rod member 70 is connected in such a way that the second connecting pivot hole 158 of the first connecting rod member 140 is connected to the third third pivot hole 98c of the first connecting rod member 70, so that the back side of the first connecting rod member 140 faces the front side of the first connecting rod member 70, and the fifth connecting pivot hole 188 of the second connecting rod member 170 is connected to the third third pivot hole 98c of the first connecting rod member 70, so that the front side of the second connecting rod member 170 faces the back side of the first connecting rod member 70, The pivot 120 is inserted into the second connecting pivot hole 158 and the fifth connecting pivot hole 188 of the operating member 130 and the third third pivot hole 98c of the first connecting rod member 70, and the pivot 120 is rotatably mounted on the operating member 130. In addition, a spacer is inserted between the first connecting rod member 70 and the first connecting member 140 and the second connecting member 170.

As shown in FIGS. 1 and 2 , the second connecting rod member 100 is connected to the first fixed pivot hole 40 of the second connecting rod member mounting portion 24 of the fixed gripping body 20 and the second pivot hole 112 of the fixed gripping body mounting portion 106 of the second connecting rod member 100 in a continuous manner, so that the surface of the front protrusion 36 of the second connecting rod member mounting portion 24 of the fixed gripping body 20 faces the surface of the fixed gripping body mounting portion 106 of the second connecting rod member 100, and the pivot 124B is embedded in the first fixed pivot hole 40 of the fixed gripping body 20 and the second pivot hole 112 of the second connecting rod member 100, and the second connecting rod member 100 is rotatably mounted on the fixed gripping body 20 by the pivot 124B. As shown in FIGS. 1 and 2 , the second connecting rod member 100 is connected to the first movable pivot hole 66 of the movable gripping body 50 and the first pivot hole 110 of the second connecting rod member 100 in a continuous manner, so that the inner surface of the first movable inner hole portion 62A of the second connecting rod member mounting portion 54 of the movable gripping body 50 contacts the surface and back surface of the second connecting rod member 100, and the pivot 124A is embedded in the first movable pivot hole 66 of the movable gripping body 50 and the first pivot hole 110 of the second connecting rod member 100, and is rotatably mounted on the movable gripping body 50 by the pivot 124A. As shown in FIGS. 1 and 2 , the second connecting rod member 100 is connected in such a way that the third connecting pivot hole 160 of the first connecting member 140 is connected to the third pivot hole 114 of the second connecting rod member 100, so that the back side of the first connecting member 140 faces the front side of the second connecting rod member 100, and the sixth connecting pivot hole 190 of the second connecting member 170 is connected to the third pivot hole 114 of the second connecting rod member 100, so that the front side of the second connecting member 170 faces the back side of the second connecting rod member 100, 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 connecting rod member 100, and the pivot 122 is rotatably mounted on the operating member 130. In addition, a spacer is inserted between the second connecting rod member 100 and the first connecting member 140 and the second connecting member 170.

As shown in FIGS. 1 and 2 , the slider 330 is connected to the small path portion 82 of the first connecting rod member 70 by making the mounting hole 348 of the retaining portion 340 continuous, and the vertical wall 360 of the inner groove portion 342 of the retaining portion 340 and the inner surface of the vertical wall 362 face the surface of the front side of the guide portion 80 of the first connecting rod member 70 and the surface of the back side of the first connecting rod member 70, and the lower end edge 86 of the guide portion 80 is connected to the engaging guide portion 364 of the retaining portion 340, and the stop portion 344 is embedded in the mounting hole 348 of the slider 330, thereby being mounted on the first connecting rod member 70.

As shown in FIGS. 1 and 2 , when the ring portion 332 of the sliding member 330 rotates, the screw 334 rotates inside the screw mounting hole 316 of the limiting portion body 302, thereby allowing the retaining portion 340 to rise and fall. By connecting the fixed gripping body 20 and the movable gripping body 50 to the first connecting rod member 70 and the second connecting rod member 100 in this way, when the first connecting rod member 70 and the second connecting rod member 100 rotate, the movable gripping body 50 can be moved away from or in contact with the fixed gripping body 20. The first embodiment of the wire tensioner 10 of the present invention places the covered wire W between the fixed gripping body 20 and the movable gripping body 50, rotates the first link member 70 and the second link member 100, thereby pulling the movable gripping body 50 toward the fixed gripping body 20, and holding the covered wire W 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.

The engaging guide portion 364 of the retaining portion 340 is slidably in contact with the lower end edge 86 of the guide portion of the first connecting rod member 70. In addition, the difference in height between the end portion 90 of the path portion and the side edge portion 94 of the path portion corresponds to the upward and downward movement distance of the movable gripping body 50, that is, corresponds to the distance that can be used to widen or shorten the gap with the fixed gripping body 20. That is, the engaging guide portion 364 of the retaining portion 340 is formed into a substantially circular arc shape corresponding to the distance that the movable gripping body 50 is separated from the fixed gripping body 20, and is formed so that the side edge portion 94 of the small path portion is located below the end portion 90 of the small path portion. Therefore, when the retaining portion 340 of the limiting portion body 302 is raised or lowered by rotating the ring portion 332 of the sliding member 330, the retaining portion 340 is 0's engaging guide portion 364 moves up and down along the lower end edge 86 of the guide portion of the first connecting rod member 70, and the first connecting rod member 70 and the second connecting rod member 100 that together with the first connecting rod member 70 constitute a parallel crank mechanism rotate, thereby allowing the first connecting rod member 70 and the second connecting rod member 100 to be rotatably installed to move forward or backward relative to the fixed gripping body 20.

As shown in Figures 2 and 4, when the movable gripping body 50 rotatably mounted on the first link member 70 and the second link member 100 moves forward or backward relative to the fixed gripping body 20, the interval 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 will change. 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 becomes the widest when the engaging guide portion 364 of the sliding member 330 approaches the left side of the guide portion 80 (the side where the path portion of the path portion 82 ends at the end portion 90), and becomes the narrowest when the engaging guide portion 364 of the sliding member 330 approaches the right side of the guide portion 80 (the side farthest from the connecting rod component body 72 of the guide portion 80).

The engaging guide portion 364 of the holding portion 340 is to sandwich the coated wire W 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, so that the ring portion 332 of the slider 330 rotates, and the holding portion 340 of the limiting portion body 302 rises and falls, thereby rotating the first connecting rod member 70 and pulling the movable gripping body 50 toward the fixed gripping body 20, so that when 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 strongly press the side surface of the coated wire W, a strong force is applied from the lower edge 86 of the guide portion of the first connecting rod member 70. Therefore, since a large friction force is generated between the engaging guide portion 364 of the holding portion 340 and the lower edge 86 of the guide portion of the first link member 70, after the engaging guide portion 364 of the holding portion 340 rotates the ring portion 332 of the slider 330, if the force of 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 pressing the side surface of the coated wire W is not weakened, it will not move to the right or left. As shown in FIG. 2 , the guide portion 80 of the first connecting rod member 70 is inserted into the inner groove portion 342 formed in the retaining portion 340 of the sliding member 330, and the engaging guide portion 364 is embedded in the small path portion 82 of the first connecting rod member 70 and the mounting hole 348 of the sliding member 330, so that it can always maintain a state of sliding contact with the inner groove portion 342 formed in the retaining portion 340 of the sliding member 330.

As shown in FIG. 1 , the first connecting rod member 70 has the surface and back of the movable gripping body mounting portion 74 of the first connecting rod member 70, the inner surface of the second movable inner hole portion 62B of the movable gripping body 50, and the surface and back of the guide portion 80 in contact with the inner groove portion 342 of the limiting portion 300, so that the first connecting rod member 70 is prevented from being deformed toward 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 sliding member 330. Thus, the tensioner 10 can prevent the first link member 70 from deforming toward the front side or the back side, thereby preventing the force of holding the covered wire W from decreasing after the movable gripping body 50 is pulled toward the fixed gripping body 20 and the covered wire W is held 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, or preventing a gap from being generated between the covered wire W and 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.

(Link mechanism) The movable gripping body 50, the first link member 70, the second link member 100 and the operating member 130 of the tensioner 10 constitute the link mechanism 18 as shown in FIGS. 1 and 2 . The first connecting rod member 70 is a driving joint that moves the parallel crank mechanism, the second connecting rod member 100 is a driven joint that moves by the driving joint, i.e., the first connecting rod member 70, the operating member 130 is connected to the driving joint, i.e., the first connecting rod member 70, and the driven joint, i.e., the second connecting rod member 100, and is a fixed joint that does not move in the parallel crank mechanism, and the movable gripping body 50 is connected to the driving joint, i.e., the first connecting rod member 70, and the driven joint, i.e., the second connecting rod member 100, and is a connecting joint that moves in the parallel crank mechanism. FIG. 10 shows a state in which the covered wire W is clamped from two directions, upper and lower, by the fixed gripping body 20 and the movable gripping body 50. The movable gripping body 50 is rotatably connected above the first link member 70 and the second link member 100 in a manner that allows it to be separated from and in contact with the fixed gripping body 20.

(Functions and usage of the interval adjustment mechanism, guide mechanism, movement limiting mechanism and connecting rod mechanism) The functions and usage of the interval adjustment mechanism, guide mechanism, movement limiting mechanism and connecting rod mechanism of the first embodiment of the tensioner 10 of the present invention are mainly explained based on Figures 4A to 4B. When the tensioner 10 is set to a state where the movable gripping body 50 is farthest from the fixed gripping body 20 and hooked on the covered wire W, as shown in FIG. 2B , the stop portion 344 of the slider 330 constituting the interval adjustment mechanism 12 and the movement limiting mechanism 16 is located on the side of the end portion 90 of the path portion of the guide portion 80, and the screw 334 is rotated, so that the engaging guide portion 364 of the slider 330 is abutted against the lower edge 86 of the guide portion, so that the slider 330 is fixed to the guide portion 80. In this state, the tensioner 10 is pushed up to the position of the covered wire W, and as shown in FIG. 4A , the covered wire W is located between the fixed gripping body 20 and the movable gripping body 50 of the tensioner 10. At this time, when 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 are maintained in a substantially horizontal direction, the screw rod 334 of the sliding member 330 is slightly inclined from the vertical direction toward the push-back side, and the front end of the push-back side of the operating member 130 extends slightly forward (to the push-back side) from the push-back side of the fixed gripping body 20. 20 is in a stationary state, the operating member 130 is pulled to the right side (pulling side), and as shown in FIG. 4A, the first connecting rod member 70 and the second connecting rod member 100 rotate counterclockwise (rotate to the push-back side) with the pivot 126B and the pivot 124B as the pivot, and cooperate with the movement of the pivot 120 and the pivot 122, and the operating member 130 moves to the lower right direction. At this time, the stopper 344 and the operating member 130 also move to the lower right direction, and when the stopper 344 touches the lower edge 96 of the path portion of the guide portion 80, the operating member 130 will not move further to the lower right direction, and the movement limiting mechanism 16 will function as follows, even if the first link member 70 and the second link member 100 and the movable gripping body 50 do not move. At this time, the operating member mounting portion 78 of the first link member 70 and the operating member mounting portion 108 of the second link member 100 also extend to the push-back side, and the first link member 70 and the second link member 100 are tilted, but the engaging guide portion 364 of the slide member 330 does not push up the guide end edge 86 of the guide portion 80 formed on the pulling side of the first link member 70. Therefore, the guide portion 80 and the stop portion 344 function as a movement limiting mechanism 16 that produces the following effect, that is, the first link member 70 and the second link member 100 and the movable gripping body 50 do not move.

Next, when the covered wire W is clamped between the fixed gripping body 20 and the movable gripping body 50, as shown in FIGS. 4A and 4B, the screw 334 of the sliding member 330 constituting the interval adjustment mechanism 12 is rotated counterclockwise, whereby the engaging guide portion 364 located at the upper end of the screw 334 abuts against the guide end edge 86 of the guide portion 80, and further, the screw 334 is rotated counterclockwise. , the guide end edge 86 slides on the engaging guide portion 364 of the slider 330 and pushes up the guide portion 80. Then, the first link member 70 and the second link member 100 constituting the interval adjustment mechanism 12 rotate counterclockwise around the pivot 124B and the pivot 126B, and push up the movable gripping body mounting portion 74 side, so that the movable gripping body 50 moves upward toward the fixed gripping body 20. Therefore, by the functions of the slider 330 constituting the interval adjustment mechanism 12, the guide portion 80 of the first link member 70, and the second link member 100, the movable gripping body 50 can be moved toward the fixed gripping body 20, and the covered wire W can be clamped. Furthermore, when the distance between the fixed gripping body 20 and the movable gripping body 50 is reduced due to the wire diameter of the coated wire W, as shown in FIG. 4B , the screw 334 of the sliding member 330 is rotated to firmly clamp the thinner coated wire W. At this time, the screw 334 of the sliding member 330 is slightly tilted toward the push-back side from the vertical direction when the linear body pressing portion 30 of the fixed gripping body 20 and the linear body retaining portion 60 of the movable gripping body 50 are maintained in the horizontal direction, and the front end of the push-back side of the operating member 130 extends quite backward (near the center in the width direction of the fixed gripping body 20) from the push-back side of the fixed gripping body 20. Accordingly, the operating member mounting portion 78 of the first connecting rod member 70 and the operating member mounting portion 108 of the second connecting rod member 100 also move toward the pulling side, and the first connecting rod member 70 and the second connecting rod member 100 are also tilted accordingly. Then, the engaging guide portion 364 of the slider 330 that rotates the screw 334 and moves upward pushes up the guide end edge 86 of the guide portion 80 formed on the pulling side of the first link member 70. In addition, the rotation of the ring portion 332 of the limiting portion 300 is mostly performed by hooking the hook 702 of the rotating rod 700 described later on the ring portion 332 and rotating the rotating rod 700.

Next, the removal of the tensioner 10 from the covered wire W will be described. By rotating the screw 334 of the slider 330 constituting the interval adjustment mechanism 12 in the clockwise direction, the screw 334 is lowered and contacts the lower edge 96 of the path portion of the guide portion 80, and then the screw 334 of the slider 330 is rotated in the clockwise direction, thereby loosening the screw 334 of the slider 330. When the screw 334 is lowered, the stop portion 344 lowers the stop portion 344 of the slider 330, and the first connecting rod member 70 rotates clockwise around the pivot 126B, thereby separating the movable gripping body 50 from the fixed gripping body 20, and pulling the tensioner 10 away from the covered wire W.

(Variation of the first embodiment)

The wire tensioner 10 of the modified example of the first embodiment of the present invention is shown in Figures 5 to 9, and 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 30 of the fixed gripping body 20; and An operating member 130 that is connected to the movable gripping body 50 via a spacing adjustment mechanism 12 and a connecting rod mechanism 18.

The aforementioned interval adjustment mechanism 12 is a mechanism for adjusting the interval between the linear body pressing portion 30 of the aforementioned fixed grasping body 20 and the linear body retaining portion 60 of the aforementioned movable grasping body 50 by means of a guiding mechanism 14. The interval adjustment mechanism 12 is mainly composed of a guiding protrusion 84, a limiting portion 300, a sliding member 330, a stopping portion 344 and an engaging guiding portion 364.

The aforementioned interval adjustment mechanism 12 has a guiding mechanism 14 that guides a movement limiting mechanism 16, and also has a movement limiting mechanism 16 that limits the movement of the aforementioned movable grasping body 50 to keep the interval between the linear body pressing portion 30 of the aforementioned fixed grasping body 20 and the linear body holding portion 60 of the aforementioned movable grasping body 50 constant.

The interval adjustment mechanism 12 is provided in the connecting rod mechanism 18 for moving the movable gripping body 50. The connecting rod mechanism 18 is mainly composed of the fixed gripping body 20, the movable gripping body 50, the first connecting rod member 70, the second connecting rod member 100 and the operating member 130. The first connecting rod member 70 constituting the connecting rod mechanism 18 is provided with a guide portion 80 protruding from or near the center of the longitudinal direction thereof. The guide portion 80 constitutes the guide mechanism 14 and extends toward the side of pulling the operating member 130.

The guiding mechanism 14 is mainly composed of the guiding protrusion 84 and the engaging guiding portion 364 constituting the guiding portion 80 and the stopping portion 344 of the limiting portion 300 .

The movement limiting mechanism 16 is composed of the guide portion 80 formed on the first link member 70 and the limiting portion 300 constituting the guide mechanism 14 spanned between the first link member 70 and the operating member 130 .

The guide portion 80 constitutes the interval adjustment mechanism 12, the guide mechanism 14 and the movement limiting mechanism 16, and has: a guide protrusion 84, which constitutes the guide mechanism 14; and a small path portion 82, which is provided through the track of the first link member 70 that moves the movable gripping body 50. The guide portion 80 is formed with: a guide edge 86, which is formed around the small path portion 82.

The limiting portion 300 constituting the interval adjustment mechanism 12 is movably mounted on the operating member 130 near the guide portion 80. The limiting portion 300 is provided with an engaging guide portion 364 constituting the movement limiting mechanism 16 in the area engaging with the guide edge 86 formed around the small path portion 82, and a stop portion 344 constituting the movement limiting mechanism 16 is provided in the area engaging with the small path portion 82. The guide portion 80 is configured to move the connecting rod member toward the pulling side and the pushing back side of the operating member 130 as the limiting portion 300 moves, and stops as the limiting portion 300 stops.

The limiting part 300 is a sliding member 330 installed between the guide part 80 and the operating member 130. The guide part 80 protrudes toward the first connecting rod member 70. The first connecting rod member 70 constitutes the connecting rod mechanism 18 connected to the movable gripping body 50. The sliding member 330 is installed on the operating member 130 near one end thereof, and the sliding member 330 is arranged to be freely movable in the direction of the movable gripping body 50 and the operating member 130. The sliding member 330 has at its other end: an engaging guide portion 364 that engages with the guide end edge 86 formed around the small path portion 82 of the guide portion 80. The limiting portion 300 is configured to fix the first link member 70 at a certain position by stopping the engaging guide portion 364 that engages with the guide portion 80 when the movable gripping body 50 is in a closed state and/or an open state.

The sliding member 330 is mounted on the operating member 130 near one end thereof, and the sliding member 330 is configured to be freely movable in the direction of the movable gripping body 50 and the operating member 130, and has a pin-shaped stopper 344 at the other end thereof that engages with the small path portion 82 of the guide portion 80. The stopper 344 is formed as a movement limiting mechanism 16 that is configured to engage with the small path portion 82 to limit the movement of the link member when the movable gripping body 50 is set to an open state.

The guide portion 80 is formed with a guide protrusion 84, and the guide protrusion 84 has: a guide edge 86, which is a semicircular arc extending from the pulling side of the operating member 130 toward the pushing side, in accordance with the trajectory of the movement of the connecting rod member that moves the movable gripping body 50, and covers the pushing side from the pulling side of the operating member 130. The guide edge 86 of the guide portion 80 constitutes the interval adjustment mechanism 12, which is formed at the lower edge of the guide protrusion 84 of the small path portion 82 surrounding the guide portion 80, and is formed to move from the pulling side of the operating member 130 to the pushing side, or from the pushing side of the operating member 130 to the pulling side in a manner of describing the semicircular trajectory as the engaging guide portion 364 of the limiting portion 300 moves. The limiting portion 300 is configured such that when the movable gripping body 50 is changed from a closed state to an open state, the engaging guide portion 364 of the guide edge 86 located at the end of the path portion 82 on the push-back side or located near the end of the path portion 82 constituting the guide portion 80 moves toward the pull-back side, and/or, when the movable gripping body 50 is changed from an open state to a closed state, the engaging guide portion 364 of the guide edge 86 located on the side away from the pull-back side from the end of the path portion 90 constituting the guide portion 80 moves toward the push-back side.

The above-mentioned structure is not different from the tensioner 10 of the first embodiment. The tensioner 10 of the modification of the first embodiment is different only in the structure of the guide portion 80 formed on the first connecting rod member 70 constituting the connecting rod mechanism 18 and constituting the interval adjustment mechanism 12, the guide mechanism 14 and the movement limiting mechanism 16. Therefore, the description here focuses on the description of the guide portion 80 formed on the first connecting rod member 70, and the description of other structures is omitted.

The guide portion 80 formed on the connecting rod member body 72 of the first connecting rod member 70 is formed in a circular ring shape in the first embodiment, and a substantially elliptical path portion 82 is formed on the inner side thereof, but the guide portion 80 in the modification of the first embodiment is not connected on the opposite side of the connecting rod member body 72 and is formed in an open state. The guide portion 80 in the modification of the first embodiment is composed of a path portion upper edge portion 92 and a guide protrusion portion 84, wherein the path portion upper edge portion 92 is a straight line extending in a direction close to the horizontal direction of the guide protrusion portion 84 on the upper side thereof, and the guide protrusion portion 84 extends from the connecting rod member body 72 in a lip shape in a manner facing the path portion upper edge portion 92. The small path portion 82 is formed between the small path portion upper edge portion 92 formed by cutting the connecting rod member body portion 72 and the small path portion lower edge portion 96 of the guide protrusion portion 84. The guide protrusion portion 84 is formed with a small path portion lower edge portion 96 extending in an arc shape at the upper end edge of the guide protrusion portion 84 on the upper side, and a guide portion lower end edge 86 extending in an arc shape at the lower end edge of the guide protrusion portion 84 on the lower side. That is, the guide portion peripheral portion of the guide protrusion portion 84 constituting the lower side of the guide protrusion portion 84, i.e., the guide portion lower end edge 86, is roughly arc-shaped, and the guide peripheral portion of the upper side constituting the upper side of the guide protrusion portion 84, i.e., the small path portion lower edge portion 96, is roughly arc-shaped. The upper edge 92 of the small path of the connecting rod body 72 constituting the guide protrusion 84 of the guide portion 80 is a straight line extending approximately parallel to the center of the lower edge 96 of the small path of the aforementioned guide protrusion 84, and is configured as an open type small path 82 in which the upper edge 92 of the small path does not exist between the center and the front end side of the guide protrusion 84. The lower edge 86 of the guide portion of the first connecting rod member 70 is configured to slidably contact the engaging guide portion 364 of the retaining portion 340, and is pushed up by the screw 334 of the slider 330.

(Live wire splitting tool) The method of using the wire tightener 10 of the present invention is mainly based on Figures 10 and 11, and is mainly explained as a live wire splitting tool 1000 used in the live wire splitting method. The live wire splitting tool 1000 is a tool used to cut the covered wire W. As shown in Figure 10, a pair of first wire tighteners 10A and second wire tighteners 10B are installed at both ends of the rod-shaped retractor 500. After the pair of first wire tighteners 10A and second wire tighteners 10B hold the covered wire W, the covered wire W is folded to cut the covered wire W. The pair of first tighteners 10A and second tighteners 10B installed at both ends of the rod-shaped retractor 500 of the live wire splitting tool 1000 of the second embodiment of the present invention are both tighteners 10 of the first embodiment of the present invention. The rod-shaped retractor 500 of the live wire splitting tool 1000 has: A cylindrical body 510 having a first mounting portion 512 for mounting a first tightening device 10A at one end thereof; A first wire support 600 is mounted on the cylindrical body 510 by mounting the cylindrical body 510 at the mounting portion 602; A retractable body 520 having a second mounting portion 522 for mounting a second tightening device 10B at one end thereof, so that the side of the end opposite to the second mounting portion 522 is placed in the cylindrical body 510 and retracts relative to the cylindrical body 510; A second wire support 610 is mounted on the retractable body 520 by mounting the retractable body 520 at the mounting portion 612; The reinforcement part (not shown) is mounted on the telescopic body 520; and the reciprocating shaft (not shown) is screwed with the reinforcement part (not shown).

As shown in FIG. 11 , the cylindrical body 510 has: a side cylindrical portion 514, which is formed protruding from the side surface thereof and is roughly cylindrical in shape, a side cylindrical hole portion (not shown) formed from an opening portion formed at the end of the side cylindrical portion 514 toward the inside of the cylindrical body 510, an input shaft 516 rotatably embedded in the side cylindrical hole portion (not shown) and having an input portion 518 at one end, the input shaft 516 having: a first umbrella gear (not shown) mounted at the end opposite to the input portion 518, and a second umbrella gear (not shown) mounted on a reciprocating shaft (not shown) and engaged with the first umbrella gear (not shown). By rotating the input portion 518 of the input shaft 516, the first umbrella gear (not shown) mounted on the end opposite to the input portion 518 of the input shaft 516 rotates, and thereby, when the second umbrella gear (not shown) rotates, the reciprocating shaft (not shown) rotates. When the reciprocating shaft (not shown) rotates, the reinforcing portion (not shown) screwed with the reciprocating shaft (not shown) and the telescopic body 520 mounted on the reinforcing portion (not shown) and freely retractable relative to the cylindrical body 510 are retracted relative to the cylindrical body 510. When the reinforcement portion (not shown) of one side and the telescopic body 520 mounted on the reinforcement portion (not shown) of the other side are extended or contracted relative to the cylindrical body 510, the distance between the first tensioner 10A mounted on the first mounting portion 512 of the cylindrical body 510 and the second tensioner 10B mounted on the second mounting portion 522 of the telescopic body 520 is extended or shortened.

After the rod-shaped retractor 500 of the live wire splitting tool 1000 places the covered wire W into the first wire insertion area 604 for placing the covered wire W in the first wire support 600 shown in FIG. 10 and the second wire insertion area 614 for placing the covered wire W in the second wire support 610 shown in FIG. 10 , the covered wire W is held by the first tightener 10A holding the first part P1 of the covered wire W and by the second tightener 10B holding the second part P2 of the covered wire W. As shown in FIG. 11 , the first tensioner 10A is to hook the hook 702 formed on at least one end of the rotating rod 700 on the ring 332 of the slider 330, and rotate the ring 332 of the slider 330 to hold the first part P1 of the covered wire W. The second tensioner 10B is to hook the hook 702 formed on at least one end of the rotating rod 700 on the ring 332 of the slider 330, and rotate the ring 332 of the slider 330 to hold the second part P2 of the covered wire W different from the first part P1. After the live wire splitting tool 1000 holds the first part P1 of the covered wire W by the first tightener 10A and the second part P2 of the covered wire W by the second tightener 10B, the input part 518 of the input shaft 516 is rotated to shorten the length of the part of the retractable body 520 extending outside the cylindrical body 510, shorten the distance between the first tightener 10A and the second tightener 10B, and fold the part between the first wire support 600 on the right side of the covered wire W and the second wire support 610 on the left side to protrude in the opposite direction of the cylindrical body 510, and cut the folded part with the cutting blade to cut the covered wire W. The live wire splitting tool 1000 itself does not have a cutting blade for cutting the coated wire W, but the live wire splitting tool 1000 can also be called a wire cutting auxiliary tool. In addition, it does not matter even if the live wire splitting tool 1000 is provided with a cutting blade for cutting the coated wire W.

As mentioned above, although the implementation forms of the present invention have been disclosed in the above description, the present invention is not limited thereto. That is, various changes can be made to the implementation forms described above in terms of mechanism, shape, material, quantity, position or configuration, etc., within the scope of the technical ideas and purposes of the present invention, and they are included in the present invention.

10: tensioner 10A: 1st tensioner 10B: 2nd tensioner 12: interval adjustment mechanism 14: guide mechanism 16: movement limiting mechanism 18: link mechanism 20: fixed gripper 22: 1st link member mounting portion 24: 2nd link member mounting portion 26: 1st upper protrusion 28: 2nd upper protrusion 29: protrusion 30: linear body pressing portion 32: front mounting portion 34: rear mounting portion 36: front protrusion 38: rear protrusion 40: 1st fixed pivot hole 42: 2nd fixed pivot hole 50: movable gripper 52: 1st link member mounting portion 54: 2nd connecting rod member mounting portion 60: Linear body holding portion 62: Movable inner hole portion 62A: 1st movable gripping body inner hole portion 62B: 2nd movable gripping body inner hole portion 66: 1st movable pivot hole 68: 2nd movable pivot hole 70: 1st connecting rod member 72: Connecting rod member body portion 74: Movable gripping body mounting portion 76: Fixed gripping body mounting portion 78: Operating member mounting portion 80: Guide portion 82: Path portion 84: Guide protrusion portion 86: Guide end edge (guide portion lower end edge) 88: (Guide portion) upper end edge 90: Path portion end portion 92: Upper edge of the path section 94: Side edge of the path section 96: Lower edge of the path section 98a: First pivot hole of the first 98b: Second pivot hole of the second 98c: Third pivot hole of the third 100: Second connecting rod member 104: Movable gripping body mounting section 106: Fixed gripping body section 108: Operating member mounting section 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: 1st connecting rod member 144: 1st contact part 146: 1st tilting part 148: 1st mounting part 150: 1st connecting pivot hole 152: 1st mounting hole 154: 2nd mounting hole 156: 3rd mounting hole 158: 2nd connecting pivot hole 160: 3rd connecting pivot hole 170: 2nd connecting member 174: 2nd contact part 176: 2nd tilting part 178: 2nd mounting part 180: 4th connecting pivot hole 182: 4th mounting hole 184: 5th mounting hole 186: 6th mounting hole 188: 5th connecting pivot hole 190: 6th connecting pivot hole 200: fixing assembly 222: fixing member 224: fixing member 300: limiting part 302: limiting part body 304: 1st body surface part 306: 2nd body surface part 308: 3rd body surface part 310: 4th body surface part 312: body upper surface part 314: body lower surface part 316: screw mounting hole 318: 7th mounting hole 320: 8th mounting hole 330: sliding member 332: ring part 334: screw 336: head part 338: neck part 340: retaining part 342: inner groove 344: stopper 346: slide mounting part 348: mounting hole 350: screw hole 352: slide mounting screw 360: vertical wall 362: vertical wall 364: engagement guide 500: rod-shaped retractor 510: cylindrical body 512: first mounting part 514: side cylindrical part 516: input shaft 518: input part 520: retractor 522: second mounting part 600: first wire support 602: mounting part 604: first wire insertion area 610: second wire support 612: mounting part 614: second wire insertion area 700: Rotating rod 702: Hook 1000: Live wire splitting tool W: Sheathed wire P1: Part 1 P2: Part 2

FIG. 1 is a three-dimensional diagram of a tensioner of the first embodiment of the present invention. FIG. 2A is a front diagram of a partial cross section of the tensioner shown in FIG. 1. FIG. 2B (A) is a diagram showing the state of the tensioner of the first embodiment of the present invention before holding the coated wire; (B) is a diagram showing the tensioner of FIG. 2B (A) from the direction of arrow A; (C) is a diagram showing the tensioner of FIG. 2B (A) from the direction of arrow B. FIG. 3 is a diagram of the first connecting rod member. FIG. 4A is a diagram showing the function of the tensioner of the first embodiment of the present invention. FIG. 4B is a front diagram showing the tensioner of the first embodiment of the present invention in the state of holding the coated wire. FIG. 4C is a diagram showing the action of moving the spacing adjustment mechanism of the first embodiment of the present invention to change the linear body pressing portion of the fixed gripping body and the linear body holding portion of the movable gripping body from a closed state to an open state. FIG. 4D is a diagram showing the state of closing the linear body pressing portion of the fixed gripping body and the linear body holding portion of the movable gripping body by moving the spacing adjustment mechanism of the first embodiment of the present invention. FIG. 4E is a diagram showing the state of closing the linear body pressing portion of the fixed gripping body and the linear body holding portion of the movable gripping body in the first embodiment of the present invention. FIG. 5 is a front diagram showing a partial cross-section of the linear body pressing portion of the fixed gripping body and the linear body holding portion of the movable gripping body in the first embodiment of the present invention. FIG. 6A is a diagram showing the action of the tensioner of the modification of the first embodiment of the present invention. FIG. 6B is a diagram showing the modification of the first link member. FIG. 7 is a diagram showing the action of the tensioner of the modification of the first embodiment of the present invention. FIG. 8A is a front diagram showing the state of the tensioner of the modification of the first embodiment of the present invention holding the covered wire. FIG. 8B is a diagram showing the action of moving the spacing adjustment mechanism of the tensioner of the modification of the first embodiment of the present invention to change the linear body pressing portion of the fixed gripping body and the linear body holding portion of the movable gripping body from a closed state to an open state. FIG8C is a diagram showing a modified example of a state in which the slider of the wire tightener of the first embodiment of the present invention is moved to close the linear body pressing portion of the fixed gripping body and the linear body holding portion of the movable gripping body. FIG9 is a front diagram of a live wire separation tool using the wire tightener of the first embodiment of the present invention.

10: Cable tensioner

20: Fixed gripper

22: 1st connecting rod component installation part

24: Second connecting rod component installation part

26: 1st upper protrusion

28: 2nd upper protrusion

29: protrusion

30: Linear body pressing part

50: Movable gripping body

52: 1st connecting rod component installation part

54: Second connecting rod component installation part

60: Linear body holding unit

70: 1st connecting rod component

80: Guidance Department

82: Small road section

100: Second connecting rod component

120: pivot

122: Axis

124A: pivot

124B: pivot

126A: pivot

126B: pivot

130: Operation components

140: 1st connecting rod component

144: 1st contact part

146: 1st inclined part

148: Installation section 1

150: 1st connecting pivot hole

152: 1st mounting hole

154: 2nd mounting hole

156: 3rd mounting hole

158: Second connecting pivot hole

160: 3rd connecting pivot hole

170: Second connecting member

180: 4th connecting pivot hole

182: 4th mounting hole

200:Fixed components

222:Fixer

224:Fixer

300: Limited section

302: Limitation section body

304: Surface of the first body

308: Surface of the third body

330: Sliding part

332: Environmental Protection Department

334: Screw

340:Maintenance Department

342: Inner groove

344: Stop Department

360: Vertical wall

362: Vertical wall

Claims (6)

A wire tensioner is characterized in that: It has: A fixed gripper having a linear body pressing portion; A movable gripper having a linear body holding portion that moves toward the linear body pressing portion of the fixed gripper; and An operating member connected to the movable gripper via a spacing adjustment mechanism and a connecting rod mechanism, The connecting rod mechanism is composed of a connecting rod member connected to the fixed gripper, the movable gripper and the operating member, The interval adjustment mechanism is a mechanism for adjusting the interval between the linear body pressing portion of the fixed gripping body and the linear body holding portion of the movable gripping body by means of a guide mechanism, and has a movement limiting mechanism. The guide mechanism is configured to move the connecting rod member to move the movable gripping body, and the movement limiting mechanism limits the movement of the movable gripping body to keep the interval between the linear body pressing portion of the fixed gripping body and the linear body holding portion of the movable gripping body constant. As in claim 1, the tensioner, wherein the interval adjustment mechanism has a connecting rod mechanism for moving the movable gripping body, The connecting rod member constituting the connecting rod mechanism has a guide portion protrudingly provided at or near the center of the longitudinal direction thereof, and the guide portion extends toward the side of pulling the connecting rod mechanism, The movement limiting mechanism is constituted by a limiting portion which is arranged between the guide portion and the operating member and constitutes the guide mechanism. A tensioner as claimed in claim 1 or 2, wherein the guide portion is formed with a small path portion and a guide edge, the small path portion is provided through the track of the connecting rod member for moving the movable gripping body, the guide edge is formed around the small path portion, the limiting portion constituting the interval adjustment mechanism is movably mounted on the operating member near the guide portion, the limiting portion is provided with a locking guide portion constituting a movement limiting mechanism in an area that is engaged with the guide edge formed around the small path portion, and a stop portion constituting a movement limiting mechanism is provided in an area that is engaged with the small path portion, The guide portion is configured to move the connecting rod member toward the pulling side and the pushing side of the operating member as the limiting portion moves, and stops as the limiting portion stops. A wire tensioner as claimed in claim 2 or 3, wherein the limiting portion is a slide member provided between the guide portion protruding toward the connecting rod member connected to the movable gripping body and the operating member, The slide member is mounted on the operating member near one end thereof, and the slide member is arranged to be movable in the direction of the movable gripping body and the operating member, The slide member has an engaging guide portion at its other end, which engages with the guide end edge formed around the aforementioned path portion of the guide portion, The limiting portion is configured to fix the first connecting rod member at a certain position by stopping the engaging guide portion engaged with the guide portion when the movable gripping body is in a closed state and/or an open state. A wire tensioner as claimed in any one of claims 2 to 4, wherein the limiting portion is a slide member provided between the guide portion protruding toward the connecting rod member connected to the movable gripping body and the operating member, the slide member is mounted on the operating member near one end thereof, and the slide member is arranged to be movable in the direction of the movable gripping body and the operating member, the slide member has at its other end: a pin-shaped stop portion engaged with the path portion of the guide portion, the stop portion is formed as follows: a movement limiting mechanism that engages with the path portion to limit the movement of the connecting rod member when the movable gripping body is in an open state, and/or a movement limiting mechanism that engages with the path portion to limit the movement of the connecting rod member when the movable gripping body is in a closed state. A wire tensioner as claimed in any one of claims 1 to 5, wherein the guide portion is formed into a guide protrusion having the guide end edge, the guide end edge is a semicircular arc shape extending from the pulling side of the operating member to the push-back side, and covers the push-back side in cooperation with the trajectory of the movement of the connecting rod member that moves the movable gripping body. The guide end edge of the guide portion constitutes a spacing adjustment mechanism, and is formed at the lower end edge of the guide protrusion of the path portion surrounding the guide portion, and is formed to: move from the pulling side of the operating member to the push-back side, or from the push-back side of the operating member to the pulling side, as the engaging guide portion of the limiting portion moves, describing the semicircular arc trajectory, The limiting part is configured such that when the movable gripping body is changed from a closed state to an open state, the engaging guide part located at the end of the travel of the small path part constituting the guide part on the push-back side or the guide end edge thereof in the vicinity thereof moves to the pull-back side, and/or, when the movable gripping body is changed from an open state to a closed state, the engaging guide part located at the guide end edge on the side away from the pull-back side from the end of the travel of the small path part constituting the guide part moves to the push-back side.

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