JP4232442B2 - Rechargeable rotary tool - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a detachable rotary tool that can be replaced with a work tool corresponding to various operations such as cutting, peeling, polishing, and squeezing an electric wire in distribution line work.
[0002]
[Prior art]
Conventionally, in distribution line construction, especially in the live line work of distribution lines, the work tool is connected to the tip of a certain length of operation rod with insulation performance and replaced, and the rotational drive source uses human power or hydraulic pressure etc. ing.
[0003]
And the present applicant has also developed the live-line operation stick | rod regarding this (refer patent document 1).
[0004]
As shown in FIG. 6, the live line operating rod 40 is provided with connecting portions 43 and 44 that can be fitted and cooperate with each other at the tip of the movable shaft 41 of the work tool A and the rotating shaft 42 of the holding rod B. In the live operation rod, the insertion tube 45 and the receiving tube 46 that can be rotatably inserted and held in the connection portions 43 and 44, respectively, can be fitted to each other by the insertion portion 47 and the fitting hole 48. One or a plurality of lock pins 49 are protruded in the insertion tube 45 in the radial direction, and a fitting groove 51 into which the lock pin 49 can be inserted is formed in the annular portion 50 on the upper side of the other receiving tube 46 in the axial direction. At the same time, the locking claw 52 engages and disengages the lock pin 49 by causing the locking claw 52 to always move in and out by a biasing force of a spring (not shown) that biases the fitting groove 51 in the circumferential direction. And the unlocking ring 54 is rotated around the outer periphery of the annular portion 50. The ring 54 and the locking claw 52 of the lock mechanism 53 are interlocked and the insertion tube 45 and the receiving tube 46 into which the connection portions 43 and 44 are inserted are inserted, and the connection portions 43 and 44 are fitted. In addition, the lock pin 49 is engaged with and disengaged from the fitting groove 51 by the locking claw 52 of the lock mechanism 53.
[0005]
With this device, it is possible to install and lock with one touch when replacing work tools at high places such as utility poles, and it can be easily released, so that live work can be performed quickly, safely and reliably. It was.
[0006]
[Patent Document 1]
Japanese Utility Model Publication No. 5-14650 [0007]
[Problems to be solved by the invention]
However, since the operation rod used for the power distribution work is long, it is difficult to easily access the work place, and the human-powered rotational drive also requires a great deal of labor.
[0008]
Further, since the conventional power tool is difficult to ground operations, have been used mainly in live-line working at construction wire, at work some force to the lock release ring 54 while working in these aerial the When the ring 54 is rotated in a direction against the urging force of the spring, there is a problem that the work tool A is dropped from the receiving cylinder 46 together with the insertion cylinder 45.
[0009]
In view of the above points, the present invention provides a rechargeable rotary tool having a structure that can be operated and controlled with one hand while preventing a work tool from falling off during work at a high place, realizing a reduction in size and weight of the tool. The purpose is to do.
[0010]
[Means for Solving the Problems]
The invention according to claim 1, cutting of the wire in the distribution work, peeling skin, Shine, various work tool according to various operations imprint like is rotationally driven by the rotational force of the electric motor, the power tool at its distal end It is a rechargeable rotary tool with a replaceable connecting bracket ,
The connection fitting is provided with a connection ring that allows the work tool to be attached and detached by the biasing force of the spring and prevents the tool from falling off during the operation, and the connection ring is A position for sliding in the axial direction of the ring to prevent the ring from slipping to prevent the work tool from falling off the coupling metal by rotating against the biasing force of the spring, and rotation of the ring And a connection ring lock mechanism having a connection lock member that slides between a position allowing the replacement of the work tool .
[0011]
According to a second aspect of the present invention, in the rechargeable rotary tool according to the first aspect of the present invention, a conversion gear is provided for setting the rotational speed of the electric motor to a predetermined rotational speed and rotational force required by the work tool, and the electric motor It is characterized in that the axis of the rotating shaft and the axis of the rotating shaft of the coupling fitting into which the work tool is inserted are substantially the same axis.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional view of a rechargeable rotary tool according to the present invention as viewed from the front. FIG. 2 is a left side view. The rechargeable rotary tool 1 includes a rechargeable battery 3 below the grip 2. A switch 4 that can be turned on and off with an index finger is provided above the grip portion 2, and a switching lever 5 for switching the rotation from the normal direction to the reverse direction is provided near the switch 4. Has been.
[0013]
An electric motor 6 as a rotation drive source is built above the switching lever 5. Furthermore, a speed switching lever 7 capable of switching the rotational speed of the electric motor 6 is installed above the electric motor 6.
[0014]
Since the above-described configuration can use the configuration of a commercially available electric drill as it is, it is not necessary to newly develop and a low-cost rechargeable rotary tool can be provided.
[0015]
Next, the transmission part 9 for transmitting the rotation of the electric motor 6 to the work tool attached to the connection socket 8 will be described. First, the first gear 10 is rotated by the rotation of the electric motor 6. And the 2nd gearwheel 11a which meshes with the 1st gearwheel 10 rotates, and the 3rd gearwheel 11b integrated with this 2nd gearwheel 11a rotates. Finally, the fourth gear 12 that meshes with the third gear 11b rotates, and the connecting socket 8 that is integrated with the fourth gear 12 rotates.
[0016]
Therefore, by appropriately changing the sizes of the second gear 11a and the third gear 11b, the rotational speed of the electric motor 6 can be converted and adjusted to a desired rotational speed required by the work tool.
[0017]
In addition, since the rotation shaft of the fourth gear 12 and the rotation shaft of the electric motor 6 are designed to be on the same straight line, vibration of the electric motor 6 can be suppressed when a work tool is attached. Since the hand holding the grip portion 2 is not shaken, an accurate operation can be performed.
[0018]
FIG. 3 is an explanatory view showing an electric wire cutting tool which is one of work tools attached to the rechargeable rotary tool. The connection between the wire cutting tool 13 and the rechargeable rotary tool 1 according to the present invention will be described with reference to FIG. 3, FIG. 1 and FIG. First, the wire cutting tool 13 is configured so that the holder 16 moves up and down by rotating the connecting rotary shaft 15 forward and backward, and the link mechanism 17 operates to open and close the wire cutting blades 18a and 18b. Details regarding the wire cutting tool 13 are described in the applicant's patent application 2002-290846.
[0019]
Then, the connecting rotary shaft 15 of the wire cutting tool 13 is fitted into the connecting socket 8 of the rechargeable rotary tool 1, and the engaging protrusions 19, 19 of the wire cutting tool 13 are inserted into the engaging grooves 20, 20 and engaged. It is. At this time, the connecting ring 21 is rotated so as to resist the bias of the spring 22, and the engaging projections 19, 19 are inserted from the insertion grooves 23, 23. When the engagement protrusions 19 , 19 of the wire cutting tool 13 are inserted into the engagement grooves 20, 20 at the rear (direction of the electric motor 6) position with respect to the locking protrusion 24, the spring is released when the connection ring 21 is released. The wire cutting tool 13 and the rechargeable rotary tool 1 are connected by rotating by the urging force 22 and the locking protrusion 24 of the connecting ring 21 coming in front of the engaging protrusions 19, 19.
[0020]
Here, when some force acts on the connecting ring 21 during the operation and the connecting ring 21 rotates in a direction against the bias of the spring 22, the wire cutting tool 13 falls off from the rechargeable rotary tool 1. Become.
[0021]
A mechanism for preventing this is a coupling lock mechanism. In this mechanism, when the connection lock member 25 shown in FIG. 1 is pushed upward, the connection fitting 26 cannot be rotated, and the connection ring 21 fixed to the connection fitting 26 cannot be rotated. This prevents it from falling out of the rotary tool 1.
[0022]
4 and 5 show a wire staking tool 27 as another example of the work tool. In addition, since this electric wire setting tool 27 is connected and locked with the rechargeable rotary tool 1 in the same manner as the connection and locking of the electric wire cutting tool 13 described above, description thereof will be omitted.
[0023]
After the electric wire laying tool 27 is placed at the position shown in FIG. 5, when the rechargeable rotary tool 1 is rotated forward, the movable arm 29 rotates and the electric wire 28 sandwiched between the rollers 30a and 30b is moved. It can be bent. Further, when the rechargeable rotary tool 1 is rotated in the reverse direction, the movable arm 29 rotates in a direction opposite to the direction in which the electric wire 28 is bent, and can be used for extending the bent electric wire 28. .
[0024]
In addition, it cannot be overemphasized that various embodiment can be taken in the range which does not deviate from the meaning of this invention. In the above embodiment, the wire cutting tool 13 and the wire staking tool 27 have been described as work tools, but the present invention is not limited to these, and various tools can be added by adding a mechanism that can be attached to and detached from the rechargeable rotary tool 1. It can be applied.
[0025]
【The invention's effect】
The invention of claim 1 is a tool for rotating various work tools according to various operations such as cutting, stripping, polishing, and squeezing electric wires in power distribution work by the rotational force of an electric motor, the tip of the tool characterized by comprising a connecting fitting freely replaceable tool, a connecting ring locking mechanism having a coupling locking member for the work tool said ring idles while working to block the fall off from the connecting fitting in Therefore, it can be easily attached to and detached from various rotary work tools. Also, a commercially available rechargeable rotary drill can be used, which is convenient. Furthermore, the rechargeable rotary tool according to the present invention can perform work on a utility pole regardless of the ground.
[0026]
According to a second aspect of the present invention, in the rechargeable rotary tool according to the first aspect, there is provided a conversion gear for setting the rotational speed of the electric motor to a predetermined rotational speed and rotational force required by the work tool, and Since the axis of the rotating shaft and the axis of the rotating shaft of the coupling fitting into which the work tool is inserted are substantially the same axis, vibration of the electric motor can be suppressed, and the grip portion Since the hand holding the handle is not shaken, an accurate work can be performed.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of a rechargeable rotary tool according to the present invention as viewed from the front.
FIG. 2 is a left side view of a rechargeable rotary tool according to the present invention.
FIG. 3 is an explanatory view showing a wire cutting tool.
FIG. 4 is a perspective view of an electric wire crimping tool.
FIG. 5 is a cross-sectional view of an electric wire caulking tool.
FIG. 6 is a conventional view showing a live-line operating bar.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rechargeable rotary tool 2 Grip part 3 Battery 4 Switch 5 Switching lever 6 Electric motor 7 Speed switching lever 8 Connection socket 9 Transmission part 10 1st gear 11a 2nd gear 11b 3rd gear 12 4th gear 13 Electric wire cutting tool 19 Engagement Joint protrusion 20 Engagement groove 21 Connection ring 22 Spring 23 Insertion groove 24 Locking protrusion 25 Connection lock member 26 Connection metal fitting 27 Electric wire crimping tool

Claims (2)

Cutting of the wire in the distribution work, peeling skin, Shine, various work tool according to various operations imprint like is rotationally driven by the rotational force of the electric motor, comprising a freely connecting fitting replacement of the power tool at its distal end Rechargeable rotary tool,
The connection fitting is mounted with a connection ring that allows the work tool to be attached and detached by the biasing force of the spring and prevents the tool from falling off during work,
The connecting ring slides in the axial direction of the ring to prevent the ring from slipping in order to prevent the work tool from falling off the connecting fitting by rotating against the urging force of the spring during operation. A rechargeable rotary tool comprising a connection ring lock mechanism having a connection lock member that slides between a position to allow rotation of the ring and a position allowing replacement of the work tool . A conversion gear is provided for setting the rotational speed of the electric motor to a predetermined rotational speed and rotational force required by the work tool, and the rotational axis of the coupling bracket into which the work tool is inserted. The rechargeable rotary tool according to claim 1, wherein the shaft core is substantially the same shaft core.

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