JPH11254339A - Structure of rechargeable rotary tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to work even in a narrow place, and to have an excellent operability in high-place works such as a power distribution work or the like, and to reduce the burden of workers, and to have excellent safety, and also to enable to perform a work of a wide use. SOLUTION: This tool is composed of an electrically-driven drive unit 2 equipped with a rechargeable power source 2c, a speed reducing mechanism 4 connected to an output shaft of the electrically-driven drive unit 2, an operation driving part 6 connected to the speed reducing mechanism 4, and a cover 7 installed for housing the speed reducing mechanism 4, the operation driving part 6 and the electrically-driven drive unit 2. In this case, the speed reducing mechanism 4 has a structure of a rechargeable rotary tool in which a planetary gear speed reducing device 4A,(4B) is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rechargeable rotary tool, and more particularly to a rechargeable rotary tool excellent in operability when performing power distribution work in a narrow place or a high place.

[0002]

2. Description of the Related Art In general, power distribution work performed at a high place such as an installed electric wire is performed using a power distribution work vehicle.
When performing the power distribution work, it is general that the vehicle is approached to the work position and the work is performed using a manipulator provided in the vehicle. However, because the work is performed while operating the manipulator arm, the distance to the work site is long, and the work time is long,
Work methods with good work efficiency are being sought.

[0003] Further, it is common practice to use a work vehicle called a bucket truck and to perform construction using a special tool. In this bucket truck, a bucket is supported by a vehicle so as to be movable up, down, left and right by a boom so that a worker can work at a high place, and a worker in the bucket operates an insulating rod for manual operation. The power distribution work is performed by attaching a tip work tool to the tip of the insulating rod.

[0004] For example, when removing and attaching a bolt or the like, a fastening tool or the like is rotatably supported on the tip side of the insulating rod, and the rotating operation of the fastening tool is performed manually. Worker fatigue was enormous.

Therefore, recently, a device mounted on a bucket car called a simple super arm has been developed to reduce the labor of the operator. This simple super arm has a drive source provided on the bucket side, and the base end side of the insulating rod is attached to this bucket so as to be operable in a predetermined manner.
An operator performs power distribution work by gripping the base end side of the insulating rod.

However, manipulators and bucket trucks are
They could only work in places where vehicles could enter, were not suitable for work in narrow places, and could not work if they could not secure a working space. In addition, a tool called a hydraulic rotary stick that uses a hydraulic motor to make use of the rotational force of the hydraulic pressure has been developed, and has been used for work on a bucket. When performing power distribution work,
Uninterruptible work is required, and the worker performs power distribution work with sufficient protection so as not to cause an electric shock accident or the like while using the indirect live tool and energized.

[0007]

However, the following problems exist in the conventional power distribution tool. That is, in the case of performing the power distribution work, if the place is narrow, a bucket truck or the like cannot enter, so that the worker may work on a telephone pole or the like in some cases. Further, even when a hydraulic rotary stick is used, a hydraulic hose for transmitting the hydraulic pressure is connected because of the hydraulic type, so that an extra load is applied to the operator and there is a problem in operability of the tool.
Furthermore, since the inside of the bucket is small, handling the hydraulic hose is troublesome.

[0008] The present invention has been made in view of the above problems, can work in a narrow place, is excellent in operability in high places such as power distribution work, reduces the burden on workers, is excellent in safety, It is another object of the present invention to provide a rechargeable rotary tool that can perform versatile work.

[0009]

Accordingly, as means for achieving the above object, an electric drive having a rechargeable power supply, a reduction mechanism connected to the output shaft of the electric drive, and a connection to the reduction mechanism are provided. The drive unit, the speed reduction mechanism and the operation drive unit, and a cover body provided so as to internally house the electric drive device, wherein the speed reduction mechanism is a rechargeable rotation using a planetary gear reduction device. It was configured as a tool structure.

The operation drive unit may be configured to detachably engage with each of a plurality of tip power tools, or may be configured to cover the cover and the exposed portion with a cover formed of an insulator. Is also good.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 is an overall sectional view showing the structure of a rechargeable rotary tool, FIG. 2 is an exploded perspective view of a reduction mechanism showing the structure of the rechargeable rotary tool, and FIG. 3 is a side view showing a use mode of the rechargeable rotary tool. is there.

First, as shown in FIG. 1, a rechargeable rotary tool 1 includes a cordless driver drill 2 as an electric driving device, a transmission drive unit 3 connected to an output shaft 2a of the cordless driver drill 2, and A speed reduction mechanism 4 connected to the transmission drive unit 3, an output transmission drive unit 5 connected to the output shaft 4g of the speed reduction mechanism 4, an operation drive unit 6 provided at one end of the output transmission drive unit 5, The cover body 7 is provided with the cordless driver drill 2 mounted thereon and the transmission drive unit 3, the speed reduction mechanism 4, the output transmission drive unit 5, and the operation drive unit 6 therein.

The cordless driver drill 2 is shown in FIG.
, A rechargeable power supply unit 2c provided below the handle 2b, a trigger switch 2d provided on the base end side of the handle 2b, a forward / reverse rotation switch 2e disposed near the trigger switch 2d, It comprises a torque control switch 2f for controlling the torque of a built-in drive motor, a rotation attachment 2g attached to a rotation shaft of the drive motor, and an output shaft 2a connected to the rotation attachment 2g.

Further, the transmission drive unit 3 includes the output shaft 2.
a, and a bearing 3b rotatably supporting the engagement rotation shaft 3a. One end of the engagement rotation shaft 3a is connected to the reduction mechanism 4 side. Connected to

As shown in FIG. 1, the speed reduction mechanism 4 includes planetary gear speed reduction devices 4A and 4B juxtaposed via a connection shaft. As shown in FIG. 2, the planetary gear reduction device 4A includes a sun gear 4a that locks the engagement rotation shaft 3a and a plurality (four in the drawing) that mesh around the sun gear 4a.
Planet gears 4b, 4b, 4b, 4b and a planet roller 4 for rotatably supporting each planet gear 4b.
c and 4d, an internal gear 4e fixedly engaged with the planet gear 4b, carriers 4f and 4h engaged with the planet rollers 4c and 4d, and an output transmission drive unit 5 provided on the carrier 4f and described later. And an output engaging portion 4g.

Also, as shown in FIG.
Is composed of a rotation input shaft 5a engaged with the output engagement portion 4g of the carrier 4f, and bearing portions 5b and 5c for rotatably supporting the rotation input shaft 5a. And
An operation drive unit 6 is connected to one end of the rotation input shaft 5a.

The operation drive unit 6 includes an engagement output shaft 6a,
It comprises a detachable ring 6b and the like provided separately around the engagement output shaft 6a. The detachable ring 6
At a predetermined position on the circumference of b, a tip power tool described later is supported so as to be freely engaged and disengaged. Note that a handle grip 8 is attached to the cover body 7 below the output transmission drive unit 5.
Are provided detachably.

Therefore, the rechargeable rotary tool 1 having the above configuration has the following operation. That is, as shown in FIGS. 1 and 2, when the trigger switch 2d of the cordless driver drill 2 is pressed to rotate the drive motor 2h, the rotation attachment 2g and the output shaft 2a rotate, thereby causing the output shaft 2a to rotate. The rotation of the engagement rotation shaft 3a of the transmission drive unit 3 connected to the transmission drive unit 3 is rotated.

Further, when the engagement rotation shaft 3a rotates, the sun gear 4a provided in the one planetary gear reduction device 4A of the reduction mechanism 4 is rotated, and the planet gears 4b are rotated by the sun gear 4a, and the carriers 4f and 4h are rotated. To rotate. When the sun gear 4a makes a plurality of rotations, the carriers 4f and 4h make one rotation along the fixed internal gear 4e, so that the rotation speed of the drive motor 2h is reduced and the output torque is increased. Becomes possible. Further, the rotation speed reduced by the planetary gear reduction device 4A is further reduced by the planetary gear reduction device 4B to generate a desired rotation speed and output torque.

For example, when the rotational speed of the drive motor 2h is 13
When the rotation speed is 50 rpm (maximum), the rotation speed is reduced to 150 rpm (maximum) by using the reduction mechanism 4. Further, when the input torque of the drive motor 2h is 40
When it is kg.cm (maximum), the output torque on the output side is reduced to 250 kg.cm (maximum) through the reduction mechanism 4.
It can be. In addition, various values of the rotation speed and the output torque can be obtained by changing the number of the planetary gear reduction devices 4A and 4B and the gear ratio. Of course, the application range can be further expanded by performing the operation of the torque control switch 2f for controlling the torque of the drive motor 2h.

Therefore, the rotational driving force decelerated by the speed reduction mechanism 4 can rotate the engagement output shaft 6a of the operation drive unit 6 through the output transmission mechanism 5 at a desired reduced speed. Therefore, for example, if the fastening tool 12 (see FIG. 3) is directly engaged with the operation drive unit 6, the work of mounting and removing the bolts and the like at the work site can be performed.

In the case of the indirect hot-line work, as shown in FIG. 3, an insulating rod 13 is connected, and for example, an electric wire cutter 14, which is one of the end working tools, is attached to the end of the insulating rod 13. It is configured to perform the operation. The electric wire cutter 14 includes a cutter blade 14b on one end side and a connection portion 14a connected to the rotating shaft 13d of the insulating rod 13 on the other end side. I have.

The insulating rod 13 has a connecting portion 13a which is engaged and supported by the engagement output shaft 6a and the detachable ring 6b of the operation drive portion 6, and has a rotating drive force of the engagement output shaft 6a at one end. It has a rotating shaft 13d that rotates, and has an attachment portion 13 such as an electric wire cutter 14 (tip working tool) at the other end.
b. The rechargeable rotary tool 1 is configured to be able to connect to other advanced work tools (specifically, the configuration already described with reference to FIG. 1), and various tools such as a polishing brush and a peeler are directly or directly connected. The configuration is such that the connection can be made indirectly via the insulating rod 13.

Therefore, even when working at high places, the operator can grip and use the handle 2b and the pressure handle grip 8 of the rechargeable rotary tool 1, so that various operations such as bolting, removing, and stripping the electric wire can be performed. Work is possible. Further, by operating the forward / reverse rotation switch of the drive motor 2h, the rotation direction of the drive motor 2h can be reversed, so that the operability is excellent. By operating the torque control switch 2f for controlling the torque of the drive motor 2h, it is possible to change the output-side rotation speed and the output torque within a predetermined range.

Further, in the rechargeable rotary tool 1, a portion exposed outside such as the cover body 7 or the handle 2b is covered with a covering body 10 such as an insulating resin.
In the case of indirect hot-line work in which power distribution work is performed in the uninterrupted state, it is possible to secure worker safety and prevent ground faults, etc.
The electric wire cutter 14, which is a tip working tool connected to the rechargeable rotary tool 1 and used, is also covered with the covering 10, so that an electric shock accident or the like of an operator can be avoided. In FIG. 1, the handle grip 8
The handle 2f and the power supply 2c are already covered with an insulator such as an insulating resin.

[0026]

Since the present invention is configured as described above, it has the following excellent effects. , The rechargeable rotary tool transmits the rotation output from the electric drive unit to the operation drive unit in a decelerated state via the planetary gear reduction unit, which is a reduction mechanism, so the tool configuration is compact. As well as the driving torque is increased, the operability is particularly good when working in a narrow place or at a high place, the labor of the operator can be reduced, and the working efficiency can be improved. In addition, since the electric drive device is connected to the speed reduction mechanism and the operation drive unit via the cover body, the structure is simple and the weight of the device can be reduced.

Since the rechargeable rotary tool can be used by connecting a variety of advanced work tools, it is possible to expand various work applications such as tightening and removing screws and bolts, peeling or cutting electric wires. Becomes possible. Also,
Since the work tool can be directly connected to the rechargeable rotary tool, it can be used for other than indirect hot-line work, which is convenient. Further, since the rechargeable rotary tool can be connected to an existing long member such as an insulating rod, indirect hot-line work can be performed without adding a dedicated member.

Since the rechargeable rotary tool has a configuration in which the cover body and the exposed portion exposed to the outside are covered with a cover body formed of an insulator, if an insulating rod is connected in the middle to use the work, the work can be performed. Even if the user performs a power distribution operation in an energized state, the risk of electric shock via the rechargeable rotary tool can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a structure of a rechargeable rotary tool according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a speed reduction mechanism of the rechargeable rotary tool according to the present invention.

FIG. 3 is a side view showing a use form of the rechargeable rotary tool of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Rechargeable rotary tool 2 Cordless driver drill (rotation drive device) 2a Output shaft 2b Handle 2c Power supply unit 2d Trigger switch 2e Forward / reverse rotation switch 2f Torque control switch 2g Rotary attachment 2h Drive motor 3 Transmission drive unit 3a Engagement rotation shaft 3b Bearing unit 4 Reduction mechanism 4A, 4B Planetary gear reduction device 4a Sun gear 4b Planet gear 4c Planet roller 4d Planet roller 4e Internal gear 4f Carrier 4g Output engagement unit 4h Carrier 5 Output transmission drive unit 6 Operation drive unit 7 Cover body 8 Handle Grip 10 Insulation body 12 Tightening tool 13 Insulating rod 14 Electric wire cutter (tip work tool)

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Daiyu Sonehara 1-5-3 Urabashi, Matsumoto-shi, Nagano Chubu Electric Power Company Matsumoto Office (72) Inventor Masaru Kojima 3-1-1, Minato-ku, Nagoya-shi, Aichi Prefecture 32 Annex of TOENEC CORPORATION (72) Inventor Hiroyuki Watanabe 3039 Sasaga, Matsumoto, Nagano Prefecture Inside Izumi Seiki Seisakusho Co., Ltd.

Claims (3)

[Claims] An electric drive having a rechargeable power supply, a speed reduction mechanism connected to an output shaft of the electric drive, an operation drive connected to the speed reduction mechanism, the speed reduction mechanism and the operation drive And a cover provided so as to internally house the electric drive device, wherein the speed reduction mechanism comprises a planetary gear reduction device. 2. The operation drive unit according to claim 1, wherein each of the plurality of front-end working tools is detachably engaged.
Structure of the rechargeable rotary tool described in 1. 3. The structure of a rechargeable rotary tool according to claim 1, wherein the cover and the exposed portion exposed to the outside are covered with a cover formed of an insulator.