JP5951742B2 - Indirect hot wire tool handle - Google Patents

Description

  The present invention relates to a form of a handle portion of an indirect hot wire tool used in an indirect hot wire work in which a worker works remotely in a live wire state.

  The handle portion that is positioned on the base end side of the limit brim of the indirect hot wire tool and is gripped by the worker is usually generally linear as shown in, for example, the stray link tong of Patent Document 1. .

  On the other hand, during indirect hot-line work, screws such as overhead wires and poles of electric poles are screwed in, screws and bolts that tighten the devices are loosened, or indirect hot wire tools themselves are attached to the overhead wires. In order to hook or remove the indirect live tool from the overhead wire, an operation of manually rotating the indirect live tool around the axis of the indirect live tool may be necessary.

  In such an indirect hot tool rotation operation, if all the handle parts gripped by the worker are linear, the worker needs to perform a simple operation of repeating the grip part movement, so the work time is reduced. Prolonged and increased worker fatigue, resulting in inefficient work. In addition, if the handle part of the indirect live tool is all linear, when the worker holds the handle part with both hands, the gripping of both hands against the handle part is the same, so one hand of the worker is fatigued. In such a case, changing the holding position of the hand relative to the handle will not be a countermeasure for a tired hand. In addition, when the indirect live tool is pushed, pulled, or supported from below, when the worker has the handle of the indirect live tool, the position with the handle should not shift downward or upward. In addition, since a relatively large grip force is required, the worker's physical strength tends to be consumed.

  In this regard, the applicant of the present application has developed, as Patent Document 2, an auxiliary operation-like insulating operation rod that is attached to the base end side of a normal indirect hot wire tool and that can bend the lower end with respect to the upper end. ing. Thereby, as FIG. 7 of patent document 2 shows, an operator grasps each of the linear upper end part and the lower end part bent with respect to the upper end part of the insulation operating rod with which the indirect live tool was attached. Further, it is possible to perform an operation of rotating the upper end portion of the insulating operation rod, and thus the indirect hot wire tool.

JP 2009-5427 A JP 2014-143778 A

  However, in the invention of Patent Document 2, since it is necessary to prepare a dedicated insulating operation rod in order to rotate the indirect live tool, the number of tools brought into the work site may be increased. Further, when the lower end of the insulating operation rod is bent at a 90 ° angle in the lateral direction, when the entire indirect live tool mounted with the insulating operation rod is rotated by grasping the bent portion, There is a possibility that the bent portion of the insulating operation rod may hinder the rotation operation.

  Therefore, the present invention provides an indirect live tool that can rotate an indirect live tool with the axis of the indirect live tool as a rotation axis with high work efficiency without increasing the number of tools brought into the work site. The purpose is to provide a handle.

The handle part of the indirect hot wire tool according to the present invention includes a handle part for an operator to hold, a tip side part that is not suitable for the worker to have for work safety, the handle part, and the tip side part. In the indirect hot wire tool having a limit brim that defines a boundary with the first brim, the handle is positioned on the axis of the tip side and can be held with one hand. Can be held with the other hand and can be rotated with the axis of the first gripping part as a rotation axis. A second gripping portion; a proximal end portion located on the axis of the distal end side portion opposite to the limit collar side with respect to the second gripping portion; and The gripping part is connected directly or indirectly to the first gripping part and the base end part, Is integrally molded from serial first gripping portion to the proximal side portion is characterized in that it is formed into a rod of a single monolithic (claim 1). The second gripping part is indirectly connected to the first gripping part via a connecting part located between the first gripping part and the second gripping part; It is indirectly connected with the base end side part through a connecting part located between the second gripping part and the base end side part (Claim 2). In addition, the second gripping part is connected to the first gripping part and the proximal side part directly by forming a curved shape that is curved in a substantially U shape (Claim 3). . Examples of the indirect hot-wire tool include a common operation rod, a stray link tong, and an insulating Yatco. The first gripping part and the second gripping part, and the second gripping part and the base end side part are indirectly connected through the connecting parts, respectively. The working part and the second gripping part, and the second gripping part and the proximal end part are directly connected by bending the second gripping part into an arc shape.

  As a result, the worker has the first gripping part on the limit collar side of the handle with one hand, and the first hand located at a position shifted from the axis of the first gripping part of the handle with the other hand. The indirect live tool is rotated by performing an operation of rotating the second gripping part so as to draw a circle about the second gripping part with the axis of the first gripping part as a rotation axis. Sometimes it is not necessary to repeat the operation of changing the handle.

Also, the hand holding the first gripping part of the handle part is below the part connecting the first gripping part and the second gripping part of the handle part or the upper part of the second gripping part. It is relatively easy because it is supported by. For this reason, for example, when a hand having the second gripping portion is fatigued, the hand that has been fatigued has the first gripping portion of the handle portion, and the second gripped by the hand that is not fatigued By having the part for use, it becomes a measure against fatigue of the hand having the second part for gripping so far.

Furthermore, the hand holding the first gripping part of the handle part is positioned below the part that connects the first gripping part and the second gripping part of the handle part or the upper part of the second gripping part. Supported by Further, the hand having the second gripping part of the handle has a stopper that connects the first gripping part and the second gripping part of the handle or the upper part of the second gripping part. become. Therefore, with a relatively large gripping force such that the position of the handle portion having the first gripping portion does not shift downward or the position of the handle portion having the second gripping portion does not shift upward. There is no need to hold the gripping part.

Furthermore, since the structure of the handle portion of the indirect hot line tool is improved, the number of tools brought into the work site does not increase.

Then, the hand holding the second gripping part of the handle is supported from below by the part connecting the second gripping part and the base end part or the lower part of the second gripping part. Therefore, the hand having the second gripping portion of the handle portion is not easily fatigued. Further, the hand holding the second gripping part of the handle is supported from below by the part connecting the second gripping part and the base end part or the lower part of the second gripping part. Therefore, it is necessary for the hand having the second gripping portion of the handle portion to grasp the second gripping portion with a relatively large gripping force so that the position where the handle portion is held does not shift downward. Disappear.

In the handle part of the indirect hot wire tool according to the present invention, the handle part includes a core part and a rotating part mounted on an outer periphery of the core part, and the rotating part is the rotating part and the handle part. The rotating portion can be rotated about the core portion as a central axis with a portion other than the mounted portion (claim 4).

As a result, the worker holds the rotating part and the part of the handle other than the part to which the rotating part is mounted, and operates the indirect live tool by rotating the rotating part around the core part. It can be rotated more easily and reliably.

As described above, the worker has the first gripping part on the limit brim side of the handle with one hand and is shifted with respect to the axis of the first gripping part of the handle with the other hand. By holding a second gripping part, the second gripping part can be rotated in a circle with the axis of the first gripping part as the axis of rotation. For this reason, when rotating an indirect hot wire tool, it becomes unnecessary to repeat the operation which changes a handle part frequently.
Also, the hand holding the first gripping part of the handle part is below the part connecting the first gripping part and the second gripping part of the handle part or the upper part of the second gripping part. It is relatively easy because it is supported by. For this reason, for example, when a hand having the second gripping portion is fatigued, the hand that has been fatigued has the first gripping portion of the handle portion, and the second gripped by the hand that is not fatigued By having the working part, it is possible to take measures against fatigue of the hand that has previously had the second gripping part.
A hand holding the first gripping part of the handle is supported from below by a part connecting the first gripping part and the second gripping part of the handle or an upper part of the second gripping part. It has been. Further, the hand having the second gripping part of the handle has a stopper that connects the first gripping part and the second gripping part of the handle or the upper part of the second gripping part. become. Therefore, with a relatively large gripping force such that the position of the handle portion having the first gripping portion does not shift downward or the position of the handle portion having the second gripping portion does not shift upward. There is no need to hold the gripping part.
However, according to the handle part of the indirect live tool according to the present invention, the indirect live tool can be rotated about the central axis of the indirect live tool with good work efficiency.

  In addition, according to the handle portion of the indirect live tool according to the present invention, it can be handled by changing the form of the handle portion of the indirect hot tool, and does not require the addition of a new tool, the work site It is possible to prevent an increase in the number of tools brought into the machine.

Further, the hand holding the second gripping part of the handle is supported from below by the part connecting the second gripping part and the base end part or the lower part of the second gripping part. Because it is relatively easy. For this reason, it is possible to make the hand holding the second gripping portion of the handle portion difficult to get tired.

Furthermore, the hand holding the second gripping part of the handle is supported from below by the part connecting the second gripping part and the base end part or the lower part of the second gripping part. Therefore, it is necessary for the hand having the second gripping part of the handle part to grip the second gripping part with a relatively large gripping force so that the position with the handle part does not shift downward. Disappears.

In particular, according to the handle part of the indirect hot wire tool according to claim 4, the worker has a cylindrical part of the handle part and a part other than the cylindrical part of the handle part, and the core part is used as the rotation axis. By performing an operation of rotating the rotating portion, the indirect hot tool can be rotated more easily and reliably.

FIG. 1 is an explanatory view showing a configuration of a common operation rod as an example of an indirect hot-wire tool, FIG. 1 (a) is an overall view of the common operation rod, and FIG. 1 (b) is a handle portion of the common operation rod. It is an enlarged view. FIG. 2 is an explanatory view showing the configuration of a stray link tong as an example of an indirect hot wire tool, FIG. 2 (a) is an overall view of the stray link tong, and FIG. 2 (b) is a head of the stray link tong. FIG. 2C is an enlarged view of the handle portion of the stray link tong. 3A and 3B are explanatory views showing the configuration of an insulating jacket as an example of an indirect hot wire tool. FIG. 3A is an overall view of the insulating jacket, and FIG. 3B is a lower side of the handle portion of the insulating jacket. It is an enlarged view. FIG. 4 is a perspective view further enlarging the configuration of the handle portion shown in FIG. 1 and showing the rotation operation of the handle portion. FIG. 5 is a perspective view further enlarging the configuration of the handle portion shown in FIG. 2 and showing the rotation operation of the handle portion. FIG. 6 is a perspective view showing the rotation of the handle while further expanding the configuration of the handle shown in FIG. 7A and 7B are explanatory views showing a rotating part provided in the handle part. FIG. 7A is an external view showing the rotating part of the handle part, and FIG. 7B is a part showing the rotating part of the handle part. It is sectional drawing.

  Hereinafter, an example of the present invention will be described with reference to the drawings.

  As an indirect hot wire tool 1 having a limit collar 2 and a handle 3 positioned on the proximal side of the limit collar 2, for example, as shown in FIGS. 1 to 3, a common operation rod 1A, a stray link tongue 1B, insulating Yako 1C, etc. Hereinafter, the present invention will be described while being divided into these indirect hot wire tools 1.

  As shown in FIG. 1, the common operation rod 1 </ b> A is detachable from the joint fitting 7 (FIGS. 2 and 3) of other indirect hot-wire tools as a tip side portion located on the tip side of the limit collar 2. It has an attachment body 5 and a lock nut 6 that can be connected. In addition, a joint fitting 7 is provided on the proximal end side of the limit collar 2 of the common operation rod 1A. Between the limit collar 2 and the lock nut 6, there is a linear rod-shaped portion 8 that constitutes a part of the tip side portion, and a draining collar 15 is disposed on the rod-shaped portion 8. The rod-shaped portion 8 is a single unit.

  Among these, the attachment main body 5 has a substantially columnar outer shape and a columnar movable protrusion 51 on the tip surface thereof. The movable protrusion 51 is attached to the attachment main body 5 so as to be able to advance and retreat along the axial direction of the attachment main body 5, and in a protruding direction from the attachment main body 5 by a spring (not shown) built in the attachment main body 5. It is energized. Further, the attachment main body 5 is provided with a pair of locking projections 52, 52 on the peripheral surface thereof. These locking projections 52, 52 have a cylindrical shape, and one locking projection 52 and the other locking projection 52 are attached at positions opposite to each other in the circumferential direction of the attachment body 5. Projecting outward in the radial direction of the main body 5. That is, one locking projection 52 and the other locking projection 52 protrude radially from a position that is 180 degrees out of phase.

  The lock nut 6 is disposed close to the joint metal fitting 4 side with respect to the attachment main body 5, and the attachment main body 5 and the joint metal fitting 7 (not shown) are firmly fastened by rotating the lock nut 6 in a predetermined direction. They can be held together or loosened.

  On the other hand, as shown in FIGS. 1 and 4, the handle portion 3 of the common operation rod 1 </ b> A includes a gripping portion 31, a proximal end portion 32, and a gripping portion 31 that are located on the limit collar side portion. It is comprised by the site | part 33 for a grip located in the middle with the base end side site | part 32. FIG.

  As shown in FIGS. 1B and 4, the gripping portion 31 is centered on this axis A when taking an axis A that extends from the tip side portion and passes through the center of the rod-shaped portion 8. It extends along the axis A in a straight line (on the axis of the tip side portion). Further, in this embodiment, the base end side portion 32 is also linear along the axis A so that the axis A is the center (on the axis of the tip end side portion, as shown in FIGS. 1B and 4). ). The gripping portion 31 basically functions as a handle portion of one hand of the worker. However, depending on the length of the gripping portion 31 and how it is used, the proximal end portion 32 is also operated instead of the gripping portion 31. It can function as a part for grasping one hand of an employee.

  On the other hand, the gripping part 33 is a part that the worker has with the other hand different from the hand that has the gripping part 31, and is gripped via a connecting part 34 that extends radially from the gripping part 31. It is connected to the base part 32 via a connecting part 35 that is connected to the use part 31 and extends in the radial direction from the base part 32. The overall shape of the gripping portion 33 and the connecting portions 34 and 35 is substantially U-shaped. In this embodiment, the gripping portion 33 is linearly formed along the axis A-2 so that the axis A-2 extending in parallel with the axis A is at the center, as shown in FIG. It extends. That is, the gripping part 33 is arranged at a position where the center is shifted according to the shift width of the axis A-2 from the axis A with respect to the axis A passing through the center of the gripping part 31.

  With this configuration of the handle 3, as shown in FIG. 4, the worker has a gripping portion 31 of the handle 3 with the left hand L and a gripping portion of the handle 3 with the right hand R, for example. In the case of holding 33, the connecting portion 34 serves as a support below the left hand L, and the connecting portion 35 serves as a support below the right hand R.

  Then, as shown in FIG. 4, for example, the worker holds the gripping part 31 of the handle 3 with the left hand L, holds the gripping part 33 of the handle 3 with the right hand R, and uses the axis A as the rotation axis. By rotating the gripping portion 33 so as to draw a circle, the worker can rotate the handle 3 and thus the common operation rod 1A without changing the handle.

  As Example 2, the case where the stray link tong 1B is used as an example of the indirect hot wire tool 1 will be described with reference to FIGS. However, since the joint fitting 7 of the stray link tong 1B has the same configuration as the shared operation rod 1A of FIG. 1, the same reference numerals are given and the description thereof is omitted.

  As shown in FIG. 2, the stray link tongue 1 </ b> B has a rod-like portion 8 and a grip portion 9 such as an electric wire as a tip side portion located on the tip side of the limit collar 2. The gripping part 9 includes a fixed part 10 and a movable part 11. The rod-shaped portion 8 is a straight unit. The fixed part 10 is a connection in which a claw part 10a having a claw-like claw part 10b on the distal end side and a base end side of the claw part 10a are connected, and a through-hole (not shown) that is threaded is formed in the center. Part 10c. On the other hand, the movable part 11 is a movable body capable of gripping an electric wire or the like in cooperation with the fixed part 10 and a rod-shaped screw shaft body 12 which is threaded so as to be engaged with the thread groove of the through hole of the connection part 10c. 13. The movable body 13 has a concave portion (not shown) on the surface facing the fixed portion 10, and the screw shaft in a state where the concave portion is fitted in a linear portion extending from the claw portion 10 b of the fixed portion 10 to the proximal end side. Attached to the tip of the body 12. A portion indicated by reference numeral 14 in FIG. 2B is a lock mechanism that locks the rotation of the rod-shaped portion 8. By setting it as said structure, the movable body 13 of the movable part 11 can be brought close to the fixed part 10 when the rod-shaped part 8 rotates.

  On the other hand, as shown in FIGS. 2 and 5, the handle portion 3 of the stray link tongue 1 </ b> B is positioned on the proximal end side of the handle portion 3 and the gripping portion 31 located on the limit collar side of the handle portion 3. And a connecting part 34 that connects the holding part 31 and the holding part 33 together.

  As shown in FIGS. 2 (c) and 5, the gripping portion 31 is straight along the axis B so that the axis B is the center when the axis B passing through the center of the rod-like portion 8 is taken. It extends in the shape (on the axis of the tip side portion). In this embodiment, as shown in FIGS. 2C and 5, the gripping portion 33 is linear along the axis B-2 so that the axis B-2 extending parallel to the axis B is the center. It extends to. In other words, the gripping portion 33 is arranged at a position where the center is shifted according to the shift width of the axis B-2 from the axis B with respect to the axis B passing through the center of the gripping portion 31. The connecting part 34 extends obliquely outward with respect to the axis B in order to connect the gripping part 31 and the gripping part 33.

  With such a configuration of the handle 3, as shown in FIG. 5, the worker has a gripping portion 31 of the handle 3 with the left hand L and a gripping portion of the handle 3 with the right hand R, for example. When 33 is held, the upper part of the connecting part 34 supports the left hand L from below. Then, when the right hand R is fatigued by this way of holding, the right hand R is changed to have the gripping part 31 of the handle 3 and the left hand L so as to have the gripping part 33 of the handle 3. Since the upper part of the connection part 34 supports the right hand R from below, it is possible to take measures against fatigue of the right hand R.

  Then, as shown in FIG. 5, for example, the worker has the gripping part 31 of the handle 3 with the left hand L and the gripping part 33 of the handle 3 with the right hand R, and the axis of the gripping part 31 By rotating the gripping portion 33 so as to draw a circle around B as a rotation axis, the operator can rotate the handle 3 and hence the stray link tongue 1B without changing the handle.

  As Example 3, the case where the insulating Yatco 1C is used as an example of the indirect hot wire tool 1 will be described with reference to FIGS. 3 and 6. However, since the joint fitting 1C of the insulating Yatco has the same configuration as the common operation rod 1A of FIG. 1, the same reference numerals are given and the description thereof is omitted.

  As shown in FIG. 3, the insulating jacket 1 </ b> C has a rod-shaped portion 8, a fixed-side gripping arm 20 fixed to the tip of the rod-shaped portion 8, and a fixed-side gripping arm 20. It has a movable gripping arm 21 that is close to the side gripping arm 20 and can grip an object with the fixed gripping arm 20. In this embodiment, a lever 22 is provided in a gripping portion 31 described below in the handle portion 3, and the lever 22 and the movable gripping arm 21 are connected via an operation rod 23. Thereby, by grasping the lever 22 and the gripping portion 31 and pressing the lever 22 strongly toward the gripping portion 31 side or loosening the force, the fixed side gripping arm 20 and the movable side gripping arm 21 are You can grab and release things.

  On the other hand, as shown in FIG. 3 and FIG. 6, the handle 3 of the insulating YAT 1C has a grip portion 31, a proximal end portion 32, and an intermediate portion between the grip portion 31 and the proximal end portion 32. It is comprised by the site | part 33 for a grip located in.

  As shown in FIGS. 3B and 6, the gripping portion 31 is linear along the axis C so as to be the center of the axis C when the axis C passing through the center of the rod-shaped portion 8 is taken. (On the axis of the tip portion). Further, in this embodiment, the base end portion 32 is also linear along the axis C so that the axis C is at the center (on the axis of the tip end portion, as shown in FIGS. 3B and 6). ). The gripping portion 31 basically functions as a handle portion of one hand of the worker. However, depending on the length of the gripping portion 31 and how it is used, the proximal end portion 32 is also operated instead of the gripping portion 31. It can function as a member's gripping part.

  On the other hand, as shown in FIGS. 3B and 6, the gripping portion 33 is directly connected to the proximal end side of the gripping portion 31 and the distal end side of the proximal end portion 32, respectively. It has a curved shape that is curved in a substantially U shape. The curvature of curvature of the gripping part 33 is not particularly limited as long as it is a numerical value that can function as a part of the operator with the other hand different from the hand having the gripping part 31.

  With such a configuration of the handle 3, as shown in FIG. 6, the worker has a gripping portion 31 of the handle 3 with the left hand L and a gripping portion of the handle 3 with the right hand R, for example. When the holding portion 33 is held, the upper surface of the gripping portion 33 at the start of bending (side surface of the limit collar 2) serves as a support below the left hand L, and the upper surface of the end of bending of the gripping portion 33 (side surface of the limit collar 2) The boundary portion between the gripping portion 33 and the proximal end portion 32 serves as a support below the right hand R.

  Then, as shown in FIG. 6, for example, the worker has the gripping portion 31 of the handle 3 with the left hand L, and has the gripping portion 33 of the handle 3 with the right hand R, and the axis of the gripping portion 31. The operator can rotate the handle portion 3 and thus the insulated jacket 1C without changing the handle by rotating the gripping portion 33 so as to draw a circle with C as the rotation axis.

  However, although described as Examples 1, 2, and 3, the handle 3 of the shared operation rod 1A may be the shape shown in FIG. 5 or the shape shown in FIG. 6, and the handle of the stray link tongue 1B. The shape shown in FIG. 4 and the shape shown in FIG. 6 may be sufficient as the part 3, and the handle | pattern part 3 of the insulated Yatco 1C may be the shape shown in FIG. 4, and the shape shown in FIG. .

  The handle 3 may be configured to have the rotating part 60 in the gripping part 31. As shown in FIG. 7, the configuration having the rotating portion 60 in the gripping portion 31 will be described by exemplifying the configuration of the handle portion 3 of the first embodiment.

  The rotating part 60 has a cylindrical cylindrical shape and is configured by rotatably covering a part of the gripping portion 31 of the handle part 3 as a core part 61. In this embodiment, as shown in FIG. 7, an annular ring is formed on the side of the limit collar 2 of the gripping part 31 so that the rotating part 60 does not move carelessly along the axial direction of the gripping part 31. A projecting portion 62 is provided, and an annular projecting portion 63 is provided on the gripping portion 33 side.

  Thus, for example, when the left hand L has the rotating part 60 mounted on the gripping portion 33 of the handle part 3, the rotating part 60 rotates about the core part 61, so that the handle part 3 and thus the indirect hot wire. The rotation operation of the tool 1 (1A, 1B, 1C) can be performed smoothly and reliably.

DESCRIPTION OF SYMBOLS 1 Indirect hot wire tool 1A Shared operation rod 1B Stray link tongs 1C Insulating Yatco 2 Limit collar 3 Handle part 31 Gripping part 32 Proximal part 33 Gripping part 34 Connection part 35 Connection part 60 Rotation part 61 Core part A Axis A -2 Line at a position shifted with respect to the axis line B-axis line B-2 Line at a position shifted with respect to the axis line C-axis line C-2 Line at a position shifted with respect to the axis line

Claims (4)

Indirect activity provided with a handle for the operator to hold, a tip side that is not suitable for the operator to hold for work safety, and a limit collar that defines a boundary between the handle and the tip side. In wire tools,
The handle is
The first gripping part on the limit collar side that can be held by one hand and located on the axis of the tip side part, and the other gripping part that is shifted from the axis of the first gripping part A second gripping part that can be held by hand and can be rotated about the axis of the first gripping part as a rotation axis; and the limit collar side with respect to the second gripping part; Has a proximal side portion located on the opposite side and on the axis of the distal side, and
The second gripping part is directly or indirectly connected to the first gripping part and the proximal end part, and is integrally formed from the first gripping part to the proximal end part. A handle part of an indirect hot wire tool, characterized in that it is formed in a single bar shape. The second gripping part is indirectly connected to the first gripping part via a connecting part located between the first gripping part and the second gripping part; 2. The indirect according to claim 1, wherein the indirect connection is made indirectly with the proximal end portion via a connecting portion located between the second gripping portion and the proximal end portion. The handle of a live tool. The second gripping part has a curved shape that is curved in a substantially U shape, and is directly connected to the first gripping part and the proximal end part. The handle part of the indirect hot-wire tool according to 1. The handle portion has a core portion and a rotating portion attached to the outer periphery of the core portion, and has the rotating portion and a portion of the handle portion other than the attaching portion of the rotating portion. The handle portion of the indirect hot tool according to any one of claims 1 to 3, wherein the rotating portion can be rotated about the portion as a central axis.

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