JP3183442B2 - Hot stick tool waterproof structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot stick tool used for performing hot work on a distribution line or the like.

[0002]

2. Description of the Related Art A hot stick tool used for live-line work on an overhead distribution line or the like is constructed by inserting a slidable operating shaft into an outer cylinder and operating a handle or the like at one end of the outer cylinder. The operating shaft is slid or rotated, and the tool provided at the tip of the outer cylinder is moved in conjunction with the movement of the operating shaft. Work such as connection.

[0003]

However, in this hot stick tool, the tool at the upper end of the outer cylinder is connected to the operating shaft in the outer cylinder, and a gap is formed between these tools and the inner circumference of the outer cylinder. As a result, water may enter the outer cylinder from these locations, causing insulation failure, and giving an electric shock to the user. In addition, since it is not possible to check for intrusion of water in advance, it is a cause of causing unnecessary anxiety to the user.

Accordingly, the present invention provides a waterproof structure in which rainwater or the like does not enter between the outer cylinder and the operation shaft in such a hot-stick tool, so that even if water enters, it can be easily visually observed from the outside. An object of the present invention is to provide a waterproof structure provided with a display unit capable of solving the problem.

[0005]

According to the first aspect of the present invention, a slidable or rotatable operation shaft is inserted into an outer cylinder, and a handle or the like is operated at one end of the outer cylinder to slide the operation shaft. A hot stick tool that moves or rotates and moves a tool provided at the other end of the outer cylinder in conjunction with the movement of the operating shaft, wherein the cylindrical upper portion slidably supports the operating shaft within the distal end of the outer cylinder. A slide guide is provided, a suitable packing material is interposed between the outer periphery of the upper slide guide, and the upper slide guide is pressed against and fixed to the inner periphery of the outer cylinder, and the inner slide of the upper slide guide is fixed to the outer periphery of the operation shaft. A suitable annular packing material is provided in contact with the outer cylinder, and a cylindrical lower slide guide for slidably supporting an operating shaft in front of the handle member below the outer cylinder is provided in the outer cylinder. Slide guy A groove that is substantially parallel to the axial direction is provided from one end to the middle of the outer periphery of the side, and a suitable packing material is interposed at the outer end of the slide guide on the opposite side to the groove to connect the lower slide guide to the inner periphery of the outer cylinder. A suitable annular packing material is provided on the inner periphery of the lower slide guide, which is in contact with the outer periphery of the operation shaft, and a window is formed in the outer cylinder at a position opposed to the groove of the lower slide guide. The window was provided with a transparent display plate in which the groove was visible.

According to a second aspect of the present invention, a slidable or rotatable operation shaft is inserted into an outer cylinder, and a handle or the like is operated at one end of the outer cylinder to slide or rotate the operation shaft. In a hot stick tool that moves a tool provided at the other end of the outer cylinder in conjunction with the movement of the operation shaft, a cylindrical upper slide guide that slidably supports the operation shaft within the distal end of the outer cylinder is provided. An appropriate packing material is interposed between the outer periphery of the upper slide guide and the upper slide guide is pressed against and fixed to the inner periphery of the outer cylinder. A packing material is provided, and further, a cylindrical lower slide guide for slidably supporting an operation shaft in front of the handle member below the outer cylinder is provided.

A large number of axially substantially parallel grooves are provided from one end of the lower slide guide on the side of the upper slide guide to the middle annular groove at the middle, and at the outer end of the slide guide on the opposite side to these grooves. The lower slide guide is pressed against and fixed to the inner periphery of the outer cylinder with a packing material interposed, and an appropriate annular packing material is provided on the inner periphery of the lower slide guide so as to be in contact with the outer periphery of the operation shaft. A hole is drilled in the outer cylinder at a position opposed to the center annular groove of the above, an indicator case is put on the outer cylinder outer periphery so as to cover the hole, and a flood pool portion in the indicator case following the through hole is formed. And a transparent display panel is provided in a window formed on the outer periphery of the indicator case facing the water reservoir.

[0008]

According to the first aspect of the present invention, when the handle member is moved, the operation shaft slides in the outer cylinder, and the tool at the tip of the outer cylinder moves in conjunction with the operation shaft. The operation shaft is slidably supported by an upper slide guide and a lower slide guide fixed in the outer cylinder at intervals. In addition, an annular packing material is provided on the inner periphery of the upper slide guide and the lower slide guide, and the operation shaft is brought into contact with the packing material to slide, and the upper slide guide and the lower slide guide themselves are also interposed via the packing material. Pressed and fixed inside the outer cylinder. Therefore, the inside of the outer cylinder between the upper slide guide and the lower slide guide is always sealed. If rainwater or the like enters the outer cylinder from between the upper slide guide and the outer cylinder, the water enters a groove formed on the outer periphery of the lower slide guide, and the transparent pipe of the outer cylinder facing the outer peripheral groove. The appearance of rainwater from the outside into the outer cylinder can be visually checked through a simple display panel.

According to the second aspect of the present invention, when the handle member is moved, the operation shaft slides in the outer cylinder, and the tool at the tip of the outer cylinder moves in conjunction with the operation shaft. This operation shaft is slidably supported by an upper slide guide and a lower slide guide fixed at intervals in the outer cylinder. In addition, an annular packing material is provided on the inner periphery of the upper slide guide and the lower slide guide, and the operation shaft is brought into contact with the packing material to slide, and the upper slide guide and the lower slide guide themselves are also interposed via the packing material. Pressed and fixed inside the outer cylinder. Therefore, the inside of the outer cylinder between the upper slide guide and the lower slide guide is always sealed. Also, if rainwater or the like enters the outer cylinder from between the upper slide guide and the outer cylinder, the water enters the groove formed in the outer periphery of the lower slide guide and the central annular groove, and further, the water enters the central annular groove. The water enters the flood pool through the through hole of the outer cylinder at the opposite location. Therefore, it is possible to visually observe the state of rainwater intrusion from the outside into the outer cylinder through the display plate of the indicator case facing the flood pool.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to 3 show a first embodiment of the present invention.
One end has a holding tool 1 and the other end has a handle operating portion 2
An operating shaft 5 slidably provided in an outer cylinder 4 of the hot stick body 3
The gripping tool 1 and the handle operating section 2 are connected to each other, and the gripping tool 1 is operated by the movement of the handle operating section 2. Two insulating boundary mark umbrellas 6 are provided in the outer cylinder 4 between the holding tool 1 and the handle operation unit 2 with a space therebetween.

A substantially cylindrical upper slide guide 7 for closing the inner periphery of the outer cylinder 4 immediately below the clamping tool 1 is fixed, and the operation shaft 5 slides on the inner periphery of the upper slide guide 7. It is freely supported. This upper slide guide 7
Has a cylindrical bearing 8 at both ends on the inner circumference thereof, and further has an annular packing material 9 inside these. The operating shaft 5 is inserted through the bearing 8 and the annular packing material 9, and slides while being pressed by the annular packing material 9 on the outer periphery. Also, annular grooves 10 are provided at both ends of the outer periphery of the upper slide guide 7, and O-rings 11 are fitted into these annular grooves 10, and the upper slide guide 7 is pressed against the inner periphery of the outer cylinder 4 and fixed. I have.

Further, an indicator case 12 is put on the outer circumference of the outer cylinder 4 immediately above the outer cylinder 4 below the umbrella 6 for insulating boundary marks, and two outer circumferences of the outer cylinder 4 inside the indicator case 12 are provided. A substantially cylindrical lower slide guide 14 is formed by piercing the through holes 13 and closing the inner periphery of the outer cylinder 4 around these 13 holes. The operation shaft 5 is slidably supported on the inner periphery of the lower slide guide 14. The lower slide guide 14 has cylindrical bearings 15 at both ends on the inner periphery thereof, and further has an annular packing material 16 inside thereof. The operating shaft 5 is inserted through the bearing 15 and the annular packing material 16, and slides while the outer periphery is pressed by the annular packing material 16.

The outer periphery of the lower slide guide 14
Several grooves 18 are provided in the axial direction at appropriate intervals from the end on the upper slide guide 7 side to the central annular groove 17 provided in the middle of the outer periphery of the lower slide guide 14. These grooves 1
An O-ring 20 is fitted in an appropriate annular groove 19 at the outer periphery of the other end of the lower slide guide 14 without the 8, and the lower slide guide 14 is fixed by being pressed against the inner periphery of the outer cylinder 4. The central annular groove 17 is opposed to the two through holes 13 of the outer cylinder 4. A flood reservoir 21 is provided in the indicator case 12 facing these through holes 13, and a transparent display plate 23 is provided in a window 22 formed in the outer periphery of the indicator case 12 facing the flood reservoir 21. It is.

In the case of the first embodiment, the handle operation unit 2
When the operating shaft 5 is moved, the operating shaft 5 slides in the outer cylinder 4. At this time, the operating shaft 5 is pressed against the annular packing materials 9 and 16 on the inner periphery of the upper slide guide 7 and the lower slide guide 14.
Slides. Moreover, the outer circumferences of these upper slide guide 7 and lower slide guide 14 are O-rings 11 and 20.
As a result, the outer cylinder 4 is pressed against the inner circumference. Therefore, the inside of the outer cylinder 4 between the upper slide guide 7 and the lower slide guide 14 is sealed, so that rainwater does not enter from outside.

[0015] Also, if rainwater enters into this,
Water travels through a plurality of grooves 18 provided on the outer periphery of one end of the lower slide guide 14, enters the central annular groove 17, and further passes through the through-hole 13 of the outer cylinder 4 facing the central annular groove 17, thereby flooding the indicator case 12. The reservoir 21 enters. Thereby, before using the hot stick tool, if rainwater has entered the outer cylinder 4 of the hot stick tool, the user can visually see the water in the flood pool 21 through the display plate 23 of the indicator case 12. Appropriate measures such as draining water can be taken. If rainwater does not enter the outer cylinder 4, no water has entered the water reservoir 21, so that it is possible to confirm this and work with peace of mind. In any case, in the first embodiment, the umbrella 6 for the insulating boundary mark below the hot stick body 3 is used.
Water is prevented by the lower slide guide 14 or the like directly above the water, so that water enters the lower part of the insulating boundary mark umbrella 6 below which the operator operates the hot stick tool by hand. Without, workers are safe.

FIGS. 4 to 7 show a second embodiment of the present invention. A hot stick body 25 having a hook member 24 at one end and a handle operating portion (not shown) at one end. The hook member 24 and the handle operation portion are connected by an operation shaft 27 slidably provided in an outer cylinder 26 of the hot stick body 25, and the hook member 24 is operated by the movement of the handle operation portion. Is what you do.

A substantially cylindrical upper slide guide 28 for closing the inner circumference of the outer cylinder 26 immediately below the hook member 24 is fixed, and the operation shaft 27 slides on the inner circumference of the upper slide guide 28. It is freely supported. A cylindrical bearing 29 is provided at both ends of the inner periphery of the upper slide guide 28, and an annular packing material 30 is provided inside these. The operating shaft 27 passes through these bearings 29 and the annular packing material 30, and in particular, the annular packing material 3.
The outer periphery is slid while being pressed by 0. Further, annular grooves 31 are provided at both ends of the outer periphery of the upper slide guide 28, and O-rings 32 are fitted into the annular grooves 31, and the upper slide guide 28 is pressed against the inner periphery of the outer cylinder 26 and fixed. I have. The upper slide guide 2
A dust removing washer 33 is provided on one end of the operation shaft 27 at one end of the operation shaft 27.

Further, an indicator case 34 is placed over the outer periphery below the outer cylinder 26, and two through-holes 35 are bored side by side on the outer periphery of the outer cylinder 26 at a position inside the indicator case 34. A substantially cylindrical lower slide guide 36 for closing the inner periphery of the outer cylinder 26 is provided. The operation shaft 2 is provided on the inner periphery of the lower slide guide 36.
7 is slidably supported. The lower slide guide 36 has cylindrical bearings 37 at both ends on the inner periphery thereof, and further has an annular packing material 38 inside these. The operating shaft 27 includes the bearing 37 and the annular packing material 38.
The inside is inserted, and in particular, the outer periphery is pressed by the annular packing material 38 and slides.

The outer periphery of the lower slide guide 36,
Several grooves 40 are provided in the axial direction at appropriate intervals from the end on the upper slide guide 28 side to the central annular groove 39 provided in the middle of the outer periphery of the lower slide guide 36. An O-ring 42 is fitted into an appropriate annular groove 41 on the outer periphery of the other end of the lower slide guide 36 without these grooves 40, and the lower slide guide 36 is fixed by being pressed against the inner periphery of the outer cylinder 26. . The central annular groove 39 faces the two through holes 35 of the outer cylinder 4. A flood reservoir 43 is provided in the indicator case 34 facing these through holes 35, and a transparent display panel 45 is provided in a window 44 formed on the outer periphery of the indicator case 34 facing the flood reservoir 43. It is. The second embodiment operates in the same manner as the first embodiment.

In the above embodiment, the lower slide guide 1
Outer cylinder 4 facing central annular groove 17 or 39 of 4 or 36
Or 26 are provided with through holes 13 or 35 and these through holes 13
Or 35 so as to cover the indicator case 12 or 3
However, the present invention is not limited to this, and a window is provided directly on the outer cylinder 4 or 26, and a transparent display plate is provided on this window so that it is substantially parallel to the outer periphery of the lower slide guide 14 or 36 in the axial direction from outside. Alternatively, the groove formed may be made visible. In the above embodiment, an O-ring is used. However, the present invention is not limited to this, and an appropriate packing material may be used.

[0021]

According to the first aspect of the present invention, an annular packing material is provided on the inner periphery of the upper slide guide and the lower slide guide, and the operating shaft is brought into contact with the packing material to be slid. The upper slide guide and the lower slide guide are also pressed and fixed in the outer cylinder via the packing material. Therefore, the inside of the outer cylinder between the upper slide guide and the lower slide guide is always sealed, and there is no possibility that rainwater enters the outer cylinder from outside. Therefore, the occurrence of accidents such as electric shock due to rainwater during work is extremely small.

If rainwater or the like intrudes into the outer cylinder from between the upper slide guide and the outer cylinder, the water enters a groove formed in the outer periphery of the lower slide guide, and the outer water opposes the outer peripheral groove. The state of rainwater intrusion from the outside into the outer cylinder can be visually checked through the transparent display plate of the cylinder. This allows the user to
Before using the hot stick tool, if rainwater has entered the outer cylinder of the tool, the internal water can be visually observed through the display plate of the outer cylinder, and appropriate measures such as draining the water can be taken. Also, if water is not visible from the outside, it can be understood that there is no intrusion of rainwater into the outer cylinder, and it is possible to work with peace of mind.

According to the second aspect of the present invention, an annular packing material is provided on the inner periphery of the upper slide guide and the lower slide guide, and the operating shaft is brought into contact with the packing material to slide the packing material. The lower slide guide itself is also pressed and fixed in the outer cylinder via the packing material. Therefore, the inside of the outer cylinder between the upper slide guide and the lower slide guide is always sealed, and there is no possibility that rainwater enters the outer cylinder from outside. Therefore, the occurrence of accidents such as electric shock due to rainwater during work is extremely small.

Also, if rainwater enters in this,
The water enters the flood reservoir of the indicator case, which allows the user to use the hot stick tool before using
If rainwater has penetrated into the outer cylinder of the tool, the water in the flood pool can be visually observed through the display plate of the indicator case, and appropriate measures such as draining the water can be taken. In addition, if rainwater does not enter the outer cylinder, no water enters the flood pool, and it is possible to confirm this and work with peace of mind.

[Brief description of the drawings]

FIG. 1 is a side view of a hot stick tool according to a first embodiment of the present invention.

FIG. 2 is a top sectional view of the hot stick body according to the first embodiment of the present invention.

FIG. 3 is a lower sectional view of the hot stick body according to the first embodiment of the present invention.

FIG. 4 is a partially cutaway perspective view of the upper end of a hot stick body according to a second embodiment of the present invention.

FIG. 5 is a perspective view of an upper slide guide used for a hot stick tool according to a second embodiment of the present invention.

FIG. 6 is a partially broken perspective view of a lower portion of a hot stick body according to a second embodiment of the present invention.

FIG. 7 is a perspective view of a lower slide guide used for a hot stick tool according to a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Holding tool 2 Handle operation part 3 Hot stick main body 4 Outer cylinder 5 Operating shaft 7 Upper slide guide 8 Bearing 9 Annular packing material 11 O ring 12 Indicator case 13 Through hole 14 Lower slide guide 15 Bearing 16 Annular packing material 17 Central annular groove Reference Signs List 18 groove 20 O-ring 21 water reservoir 22 window 23 display plate 24 hook member 25 hot stick main body 26 outer cylinder 27 operating shaft 28 upper slide guide 29 bearing 30 annular packing material 32 O-ring 34 indicator case 35 through hole 36 lower slide guide 37 Bearing 38 Annular packing material 39 Central annular groove 40 Groove 42 O-ring 43 Flood pool 44 Window 45 Display plate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-212105 (JP, A) JP-A-2-118412 (JP, U) JP-A-6-13314 (JP, U) JP-A-3-212 3110 (JP, U) Hira 4-2913 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H02G 1/02

Claims (2)

(57) [Claims] A slidable or rotatable operation shaft is inserted into an outer cylinder, and a handle or the like is operated at one end of the outer cylinder to slide or rotate the operation shaft to interlock with the movement of the operation shaft. In a hot stick tool for moving a tool provided at the other end of the outer cylinder, a cylindrical upper slide guide that slidably supports an operation shaft is provided within the distal end of the outer cylinder. The upper slide guide is fixed to the inner circumference of the outer cylinder with the packing material interposed, and an appropriate annular packing material that is in contact with the outer periphery of the operation shaft is provided on the inner circumference of the upper slide guide. A cylindrical lower slide guide that slidably supports the operation shaft in front of the lower handle member is provided in the outer cylinder, and is substantially parallel to the axial direction from one end of the outer periphery of the upper slide guide to the middle of the lower slide guide. Groove The lower slide guide is fixed to the inner periphery of the outer cylinder with an appropriate packing material interposed at the outer peripheral end of the slide guide opposite to the groove, and the operation shaft is fixed to the inner periphery of the lower slide guide. A suitable annular packing material is provided in contact with the outer periphery, and a window is formed in an outer cylinder of the lower slide guide opposite to the groove, and a transparent display plate in which the groove is visible is provided in the window. And the waterproof structure of hot stick tools. 2. A sliding or rotatable operation shaft is inserted into an outer cylinder, and a handle or the like is operated at one end of the outer cylinder to slide or rotate the operation shaft to interlock with the movement of the operation shaft. In a hot stick tool for moving a tool provided at the other end of the outer cylinder, a cylindrical upper slide guide that slidably supports an operation shaft is provided within the distal end of the outer cylinder. The upper slide guide is fixed to the inner circumference of the outer cylinder with the packing material interposed, and an appropriate annular packing material that is in contact with the outer periphery of the operation shaft is provided on the inner circumference of the upper slide guide. A cylindrical lower slide guide for slidably supporting the operation shaft in front of the lower handle member is provided, and the lower slide guide is substantially axially extended from one end of the outer periphery of the upper slide guide side to a middle annular groove in the middle. The lower slide guide is fixed to the inner periphery of the outer cylinder by interposing a packing material at the outer peripheral end of the slide guide on the opposite side of these grooves, and the inner periphery of the lower slide guide. A suitable annular packing material is provided in contact with the outer periphery of the operation shaft, and a through hole is formed in the outer cylinder at a position opposed to the central annular groove of the lower slide guide, and the outer cylinder outer periphery is covered so as to cover the through hole. The indicator case is covered, a flood pool portion following the through hole is provided in the indicator case, and a transparent display plate is provided in a window formed on an outer periphery of the indicator case facing the flood pool portion. The waterproof structure of the hot stick tool.