JP5400568B2 - Yatco for remote control - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a remote control yatco that safely grips an overhead wire and other components to which a high voltage is applied in the overhead wire work.

  Such a remote control yatco is already known from Patent Document 1 below. As shown in FIG. 5, the remote control yatco has an insulating main shaft 41 in which an insulating umbrella 40 is fitted and fixed to an intermediate portion, and a base portion of a fixed jaw 36 at a tip portion of the main shaft 41 as shown in FIG. 5. A gripper 35 attached to the base of the main shaft 41, an operation tool 43 with an insulating cover 45 attached to the base of the main shaft 41, and a movable jaw pivotally supported by the fixed jaw 36 of the gripper 35 so that the shaft 21 can be opened and closed. 37 and the operation lever 5 of the operation tool 3 are connected, and the manual operation of the operation lever 45 is transmitted to the gripping and releasing operation by opening and closing the movable jaw 37 with respect to the fixed jaw 36 of the gripping tool 35. Connecting shaft 46.

  The main body of the fixed jaw 36 and the movable jaw 37 of the gripper 35 is made of synthetic resin, and metal grip plates 36a and 37a are attached to the grip portion to ensure wear resistance. Since the main shaft 41 and the connecting shaft 46 are made of an insulating FRP pipe, the gripping tool 35 and the operation tool 43 are insulated from each other, and can be remotely operated in the overhead wire work. When the operation lever 45 is pressed against the main shaft 41 against the spring 24, the movable jaw 37 moves to the fixed jaw 36 side, and the work object is firmly held between the metal holding plates 36a and 37a. can do. When the operation of the operation lever 45 is released, the operation lever 45 returns with the movable jaw 37 by the bias of the spring 24.

  The fixed jaw 36 and the movable jaw 37 are both curved arms protruding outward from the position where the fixed jaw 36 and the movable jaw 37 are connected by the shaft 21 to the tip having the holding plates 36a, 37a, and between the holding plates 36a, 37a. This makes it difficult for objects around the work object to get in the way. In addition, the gripping surfaces of the gripping plates 36a and 37a are the same planes as the hand tools such as pliers, radio pliers, and Yatsuko, and are provided with versatility so that various forms can be gripped. However, the gripping surface is a convex / concave surface by knurling or the like, and slipping with the work object is prevented.

  Although various improvements have been made to such a remote control yatco, the basic configuration as described above has hardly changed.

Japanese Patent Laid-Open No. 10-108328

  However, between flat gripping surfaces, it is unfamiliar and slippery with respect to a circular cross section or an electric wire or sleeve close thereto. As a result, it sometimes happens that the gripping force is increased to prevent slipping and the work is being damaged. In addition, there is a problem that can only be taken after a problem due to disconnection or breakage occurs without being noticed at the time of work. Further, the gripper 35 is capable of gripping the work object independently so that the gripping plates 36a and 37a are not easily disturbed as described above. There is also a poor workability because it is difficult to determine the gripping position without receiving the guide.

  In view of the above-described problems, the present invention provides a remote object that allows a work object having a circular shape such as an electric wire or a sleeve or an external shape close thereto to be grasped with a gripping position that can be grasped easily and easily by remote operation. The object is to provide an operation yatco.

  In order to solve the above-described problems, the remote control yatco of the present invention is provided with an insulating main shaft, a gripping tool in which a base portion of a fixed jaw is attached to a tip portion of the main shaft, and a base portion of the main shaft. A fixed jaw of the gripping tool, comprising: an operating tool, a movable jaw pivotally supported so as to be opened and closed on the fixed jaw of the gripping tool, and an insulating connecting shaft for connecting the operating tool. And the movable jaw, which extends from the shaft support portion and has a flat inelastic gripping surface at the tip thereof, is bent at least on the side facing the opening / closing direction in the middle of the opening / closing arm and is bent in the longitudinal direction of the opening / closing arm. It is characterized in that an elastic concave gripping surface for gripping is formed of an elastic member.

  In such a configuration, the gripping tool is handled by the main shaft attached to the fixed jaw, the movable jaw is opened and closed with respect to the fixed jaw by remote operation with the operation tool on the proximal side of the main shaft, and the remote operation is performed by closing operation. The object can be grasped and necessary remote work can be performed in that state, and the grasping can be released by the opening operation. The grip and release can be performed between the non-elastic gripping surfaces at the tip of the open / close arm as before, but can also be performed between the elastic concave gripping surfaces formed by the elastic gripping member in the middle of the open / close arm. For example, the elastic concave curved gripping surface can be easily adapted to its outer shape even with a thin electric wire or sleeve due to the concave curved shape and elasticity, and can be gripped without difficulty by exerting a high frictional force. In addition, since the middle of the open / close arm with the elastic concave gripping surface is closer to the shaft support side from the gripping surface at the tip, the work object electric wire and sleeve can be received with reduced flexibility between the open / close arms, It becomes easy to align between elastic gripping surfaces.

  In the configuration as described above, the elastic concave / curved gripping surface may further have a concavo-convex shape formed by ridges formed in at least one of the longitudinal direction, the width direction, and the oblique direction of the open / close arm. .

  In such a configuration, in addition to the above, the elastic concave and curved gripping surface is further formed by the protrusions formed in at least one of the longitudinal direction, the width direction, and the oblique direction of the opening / closing arm that forms the uneven shape. It is easy to be elastically deformed by pressure contact with the outer surface of the sleeve and the sleeve, and the outer surface of the electric wire and sleeves are gripped more reliably and more comfortably by surface contact with high frictional force with strong repulsion of the elastic gripping member at each part can do.

  In the configuration as described above, the elastic gripping member can be a cylinder and covers the open / close arms of the fixed jaw and the movable jaw.

  In such a configuration, in addition to the above, the cylindrical elastic gripping member can be simply provided by insert molding or elastically covering the fixed jaw and the movable jaw. And it is hard to come off.

  In the above configuration, the open / close arms of the fixed jaw and the movable jaw have an outwardly convex curved shape, and the elastic gripping member has an elastic concave gripping surface along the curved shape of the open / close arm. Can do.

  In such a configuration, in addition to the above, the elastic gripping member further has an elastic concave gripping surface along the curved shape of the open / close arm, thereby providing a uniform elastic gripping force with a constant thickness throughout the entire area. To do.

  According to the remote control yatco of the present invention, the work object can be gripped and released as usual between the metal gripping surfaces at the tip of the open / close arm, and the elastic recess by the elastic gripping member in the middle of the open / close arm. Even with thin curved wires and sleeves between the curved gripping surfaces and their elasticity, even thin wires and sleeves are well-familiar with the outer shape and can be gripped securely with high frictional force, making it easy to work without slipping or misalignment . In addition, the elastic concave gripping surface is in the middle of the opening and closing arm, and it is easy to accept the electric wire and sleeve to be worked between the opening and closing arms with the degree of freedom as much as it is closer to the shaft support side from the tip holding surface. And can be quickly gripped.

  In addition to the above, the elastic concave gripping surface is easily elastically deformed by the ridges that form the concave and convex shape, along the outer surface of the electric wires and sleeves, and with high frictional force with strong repulsion. In order to make it easier to work, you will be able to hold it even more securely.

  In addition to the above, if the elastic gripping member is cylindrical, it can be easily provided by insert molding that covers the open and close arms of the fixed jaw and the movable jaw or by elastic covering, and it is difficult to come off and durability is improved To do.

  In addition to the above, since the elastic gripping member has an elastic concave gripping surface along the curved shape of the open / close arm, the thickness of the entire area is constant, and uniform elastic gripping force is exhibited. Enhanced.

It is a side view which shows the principal part which shows one example of the remote control yatco of embodiment which concerns on this invention. It is a perspective view of the holding part of the same hat. It is a perspective view which shows the principal part which shows another example of the remote control yatco of embodiment which concerns on this invention. It is a perspective view which shows the principal part which shows the other example of the remote control yatco of embodiment which concerns on this invention. It is a side view which shows the conventional Yatco for remote operation.

  The remote control yatco according to the present invention will be described below with reference to several examples shown in FIGS. The following description is a specific example of the present invention and does not limit the matters described in the claims.

  The remote control YATCO 100 of this embodiment shown in FIGS. 1 to 4 includes an insulating main shaft 1, a gripping tool 4 in which a base portion of a fixed jaw 2 is attached to a tip portion of the main shaft 1, and a base portion of the main shaft 1. And an insulative connecting shaft 16 for connecting the operating tool 3 to the movable jaw 5 supported by the shaft 6 so as to be opened and closed to the fixed jaw 2 of the gripping tool 4. Open / close arms 2a and 5a having flat inelastic gripping surfaces 7 and 8 made of metal or the like extending from the shaft support portion of the fixed jaw 2 and the movable jaw 5 of the gripping tool 4 The elastic gripping member 13 is provided with elastic concave gripping surfaces 11 and 12 that are bent in the longitudinal direction of the open / close arms 2a and 5a and grip the work object 9 (FIG. 1) at least on the side facing the open / close direction. The basic configuration common to the example of FIGS. 1 and 2, the example of FIG. 3, and the example of FIG. To have.

  The gripping tool 4 having such a basic configuration is handled by the main shaft 1 attached to the fixed jaw 2, and the movable jaw 5 is opened and closed with respect to the fixed jaw 2 by remote control by the operation tool 3 on the proximal side of the main shaft 1. The remote work object 9 can be gripped by the closing operation, the necessary remote work can be performed in that state, and the grip can be released by the opening operation. The grip and release can be performed between the inelastic gripping surfaces 7 and 8 at the tips of the open / close arms 2a and 5a as before, but the elastic concave gripping surface formed by the elastic gripping member 13 in the middle of the open / close arms 2a and 5a. 11 and 12, the elastic concave gripping surfaces 11 and 12 can be easily adapted to the outer shape of a thin electric wire or sleeve due to the concave shape and elasticity when aligned with the work object 9 such as an electric wire or a sleeve. High frictional force can be exerted and gripped without difficulty. Further, the open / close arm 2a, 5a with the elastic concave gripping surfaces 11, 12 is provided with an electric wire or a sleeve as the work object 9 by the amount that is close to the shaft support side from the gripping surfaces 7, 8 at the tip. 2a and 5a, and therefore, the elastic concave and convex gripping surfaces 11 and 12 are received with a reduced degree of freedom, so that the positioning between the elastic concave and convex holding surfaces 11 and 12 is facilitated.

  As described above, the gripping and releasing of the work object 9 can be performed between the inelastic gripping surfaces 7 and 8 at the tips of the open / close arms 2a and 5a as usual, and an elastic grip member in the middle of the open / close arms 2a and 5a. 13 between the elastic concave and convex gripping surfaces 11 and 12, even with a thin electric wire or sleeve due to their concave curved shape and elasticity, gripping it with a high frictional force well and well fit to its outer shape, slipping and position Work easily without any deviation. Further, the elastic concave curved gripping surfaces 11 and 12 are in the middle of the open / close arms 2a and 5a, and the electric wires and sleeves to be worked 9 are as much as the gripping surfaces 7 and 8 at the tips are close to the shaft support side by the shaft 6. Can be received between the open / close arms 2a and 5a, and therefore between the elastic concave and convex gripping surfaces 11 and 12, with a reduced degree of freedom, and can be easily aligned and quickly gripped.

  Further, the elastic concave and convex gripping surfaces 11 and 12 are formed in at least one of the longitudinal direction, the width direction and the oblique direction of the open / close arms 2a and 5a, the example of FIG. 1, the example of FIG. It is assumed that the projections and recesses 14 have the uneven shape as shown in the example. Such elastic concave and convex gripping surfaces 11 and 12 are easily deformed elastically by the ridges 14 having the concavo-convex shape, along the outer surface of the electric wires and sleeves, and a surface with high frictional force accompanied by strong repulsion. By touching it, you can grip it more easily and work more easily.

  In the example of FIGS. 1 and 2, two ridges 14 facing in the longitudinal direction of the open / close arms 2 a and 5 a are formed in both the elastic concave and convex gripping surfaces 11 and 12 in the width direction. According to this, since the ridges 14 are oriented in the longitudinal direction of the open / close arms 2a, 5a, the ridges 14 can be located at any position in the longitudinal direction between the elastic concave and convex gripping surfaces 11, 12, regardless of the number of the ridges. It works reliably to grip a thin wire or sleeve without play or escape. Further, on the combination structure in which the movable jaw 5 having a small width rotates in the slit 15 of the fixed jaw 2 having a larger width, there is a difference in the width, and each elastic concave curved gripping surface is commensurate with this. The widths of 11 and 12 are also different in size. Therefore, the two ridges 14 arranged on both sides in the width direction of the elastic concave gripping surfaces 11 and 12 are brought into contact with different positions in the longitudinal direction of the work object 9 such as electric wires and sleeves to be gripped. Specifically, the ridges 14 of the wide elastic concave curved gripping surface 11 are pressed from two sides of the work object 9 at a relatively large distance in the longitudinal direction to form a narrow elastic concave curved surface. The ridges 14 of the gripping surface 12 have two intervals smaller than the press-contact interval between the two locations where the ridges 14 of the elastic concave curved gripping surface 11 are pressed from the other side of the work object 9. Pressure contact. As a result, the work object 9 can be reliably grasped at four positions in the longitudinal direction of the work object 9 with good balance in the longitudinal direction, that is, without backlash in the longitudinal direction.

  In the example shown in FIG. 3, the ridges 14 are made larger than the examples in FIGS. 1 and 2 by taking advantage of the large width of the elastic concave gripping surface 11. Specifically, four are formed, and the gripping force for the work object 9 is increased. However, also in this case, the pressure contact position on the work object 9 by the ridge 14 is different in the longitudinal direction of the work object 9 on the elastic concave grip surface 11 side and the elastic concave grip surface 12 side. This is advantageous for gripping in the longitudinal direction. In the example of FIG. 4, the mesh-shaped uneven surface is formed by combining and arranging the convex strips 14 a facing in the width direction on the convex strips 14 facing in the longitudinal direction of the open / close arms 2 a and 5 a. As a result, the pressure contact points of the elastic concave gripping surfaces 11 and 12 with respect to the work object 9, the pressure contact elastic force and the total pressure contact area at each pressure contact portion are increased, and the elastic gripping force can be increased.

  Although not illustrated, the oblique ridges have an arrangement pitch less than the inclined height between both ends even if they are arranged in the same direction in the longitudinal direction on both elastic concave and convex gripping surfaces 11 and 12. As a result, it works reliably so that the thin electric wire or sleeve can be gripped without play or escape at any position in the longitudinal direction between the elastic concave and convex gripping surfaces 11 and 12. Also in this case, if the mesh-like irregularities are formed by crossing the ridges whose inclination directions are reversed to form the mesh-like irregularities, the pressure contact points of the elastic concave curved gripping surfaces 11 and 12 with respect to the work object 9 and the respective pressure contact portions The pressure contact elastic force and the total pressure contact area are increased, and the elastic gripping force can be increased.

  The elastic gripping member 13 may be any of rubber, synthetic rubber, and synthetic resin having elasticity similar to these, as shown in the examples of FIGS. 1 and 2, the example of FIG. 3, and the example of FIG. It is cylindrical and covers the open / close arms 2a and 5a of the fixed jaw 2 and the movable jaw 5. Such a cylindrical elastic gripping member 13 can be easily provided by insert molding or elastically covering the open / close arms 2a and 5a of the fixed jaw 2 and the movable jaw 5, and can be detached. Difficult to improve durability. While the gripping surface 7 in each example is substantially the same as the width of the fixed jaw 2 having the gripping surface 7, the gripping surface 8 has the same width as the gripping surface 7 but is wider than the width of the movable jaw 5 having the same. Since it is greatly widened, the cylindrical elastic gripping member 13 can be prevented from coming off if it is mounted on the open / close arm 5a by overcoming the widened portion by elastic deformation. However, since the fixed jaw 2 side does not have such a widened portion, the attached cylindrical elastic gripping member 13 is not prevented from coming off on the open / close arm 2a. In order to cope with this, it is possible to adhere to the open / close arm 2a, or to provide a concave / convex fitting portion that prevents the arm from coming off.

  Further, the elastic gripping member 13 follows the curved shape of the open / close arms 2a, 5a by utilizing the fact that the open / close arms 2a, 5a of the fixed jaw 2 and the movable jaw 5 have a curved shape protruding outward. It has an elastic concave curved gripping surface. As a result, the elastic gripping member has an elastic concave gripping surface along the curved shape of the open / close arm, thereby providing a uniform elastic gripping force while keeping the thickness of the entire region constant. As a result, work stability can be improved.

  Finally, the main shaft 1 and the connecting shaft 16 are insulating FRP pipes, and the fixed jaw 4 and the movable jaw 5 of the gripping tool 2 are made of insulating nylon. The gripping surfaces 7 and 8 are both formed by an aluminum alloy gripping plate 17, fixed to the tips of the opening and closing arms 2a and 5a by screws 18 so that they can be replaced if worn. On the gripping surfaces 7 and 8 formed by these gripping plates 17, a number of frictional uneven patterns are formed to prevent slipping with the gripped work object 9.

  In addition to conventional gripping, the present invention can easily and quickly align even a thin electric wire or sleeve between the elastic concave and curved gripping surfaces by an elastic gripping member provided in the middle of the gripping arm of the gripping tool. Hold it securely and work without play or escape.

DESCRIPTION OF SYMBOLS 1 Main axis | shaft 2 Fixed jaw 2a Opening / closing arm 3 Operating tool 4 Gripping tool 5 Movable jaw 5a Opening / closing arm 6 Axes 7, 8 Holding surface 9 Work object 11, 12 Elastic concave bending surface 13 Elastic holding member 14, 14a Convex 16 Connection axis

Claims (4)

  Insulating main shaft, gripping tool having a fixed jaw base attached to the tip of the main shaft, an operating tool attached to the base of the main shaft, and a movable support pivotally supported by the fixed jaw of the gripping tool In a remote control yatco provided with an insulative connecting shaft for connecting a jaw and the operating tool, a fixed non-elastic gripping surface extending from the shaft support portion of the fixed jaw and the movable jaw of the gripping tool is provided at the tip. An elastic concave holding surface that is bent in the longitudinal direction of the open / close arm and holds the work object is formed by an elastic member on at least a side of the open / close arm that faces the open / close direction. Yatco for operation.   2. The remote-control yatco according to claim 1, wherein the elastic concave-curved gripping surface has a concavo-convex shape formed by ridges formed in at least one of a longitudinal direction, a width direction, and an oblique direction of the open / close arm.   The remote control yatco according to any one of claims 1 and 2, wherein the elastic gripping member has a cylindrical shape and covers the open / close arms of the fixed jaw and the movable jaw.   The open / close arm of the fixed jaw and the movable jaw has an outwardly convex curved shape, and the elastic gripping member has an elastic concave curved gripping surface along the curved shape of the open / close arm. Yatco for remote control described in 1.

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