JP7244906B2 - Rotary drive device and rotary operation rod provided with the same - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention relates to a rotary drive device attached to a rotary operating rod used for work such as stripping overhead wires or winding insulating tape in distribution line construction, and a rotary operating rod comprising the same. Regarding.

In so-called distribution line work, such as cutting and branching overhead wires (hereinafter simply referred to as "wires") or stripping wire coatings to connect wires to each other, insulating rods are used to connect live parts The technique of indirectly performing the construction without direct contact is widespread.

In such construction work, a rotary operation rod is used for stripping electric wires and winding insulating tapes.

Conventionally, a rotating handle attached to the rotating operating rod is manually rotated, but in order to save labor, an electric screwdriver is attached to the rotating operating rod and rotated instead of the rotating handle.

Generally, a gun type is used as the electric screwdriver. For this reason, when an operator tries to turn the rotary operation rod with a gun-type electric screwdriver, the rotary operation rod receives a rotational reaction force, and the operator's hand may be shaken strongly.

In addition, it is inconvenient to attach and detach the gun-type electric screwdriver to and from the rotary operation rod, and there is also a possibility that the electric screwdriver or the like may be dropped due to unsteady handling.

In order to cope with such a problem, for example, like the remote insulated rotary operation tool disclosed in Patent Document 1, a rotary operation rod has a built-in drive unit for rotating it and an operation button is provided. Proposed.

JP 2012-175815 A

However, there is a problem in terms of cost because there is a risk that the manual rotary operation rod that has been in use may be wasted if the rotary operation tool is replaced with the rotary operation tool disclosed in Patent Document 1. .

The present invention has been made in view of such problems, and its object is to retrofit it to a conventional manual rotary operation rod and use it as an electric or manual rotary operation rod. To provide a rotary drive device capable of rotating and a rotary operation rod provided with the same.

According to one aspect of the invention,
a rotary shaft whose tip is attached to the rotary handle mounting hole of the rotary operation rod;
an electric drive unit that electrically rotates the rotating shaft;
a manual handle offset with respect to the axis of rotation ;
The manual handle is engageable with the rotary operation rod to prevent the manual handle from rotating together when the rotary shaft is rotationally driven by the electric drive unit, and is engageable with and detachable from the rotary operation rod. A reaction force holding part is provided
A rotary drive is provided.

Preferably, the manual handle is tiltable with respect to the central axis of the rotating shaft, and when the manual handle is in one state, the reaction force holding portion is engaged with the rotary operation rod. When the manual handle is in the other state, the reaction force holding section is separated from the rotary operation rod, and the rotary shaft can be rotationally driven using the manual handle.

Preferably, a shaft lock mechanism is provided to prevent the electric drive section from rotating in a state in which the reaction force holding section is separated from the rotary operation rod.

Preferably, the electric drive section can rotate the rotary shaft forward or backward.

According to another aspect of the invention,
A rotary operation rod is provided that includes the above rotary drive device.

According to the present invention, it is possible to provide a rotary drive device that can be retrofitted to a conventional manual rotary operating rod and used as an electric or manual rotary operating rod, and a rotary operating rod comprising the same. rice field.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the rotation drive device 10 which concerns on 1st Embodiment to which this invention was applied. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows the rotation drive device 10 which concerns on 1st Embodiment to which this invention was applied. BRIEF DESCRIPTION OF THE DRAWINGS It is a partial cross section which shows the rotation drive device 10 which concerns on 1st Embodiment to which this invention was applied. FIG. 2 is a front view showing an example of a rotating operating rod 100; 1 is a perspective view showing a state in which a reaction force holding portion 64 is pulled, of the rotary drive device 10 according to the first embodiment to which the present invention is applied; FIG. 1 is a front view showing a state in which a reaction force holding portion 64 is pulled, of the rotary drive device 10 according to the first embodiment to which the present invention is applied; FIG. FIG. 2 is a front view showing a state in which the rotary drive device 10 according to the first embodiment is attached to the rotary operating rod 100 and the reaction holding portion 64 is also engaged with the rotary operating rod 100; FIG. 3 is a front view showing a state in which the rotary drive device 10 according to the first embodiment is attached to the rotary operation rod 100 and the reaction force holding portion 64 is separated from the rotary operation rod 100; It is a perspective view showing rotation drive device 10 concerning a 2nd embodiment to which the present invention was applied. FIG. 11 is a front view showing a state in which the rotary drive device 10 according to the second embodiment is attached to the rotary operating rod 100 and the reaction holding portion 64 is also engaged with the rotary operating rod 100; FIG. 11 is a perspective view showing a state in which a reaction force holding portion 64 is moved away from a rotary operation rod 100 in the rotary drive device 10 according to the second embodiment to which the present invention is applied; FIG. 11 is a front view showing a state in which the rotary drive device 10 according to the second embodiment is attached to the rotary operating rod 100 and the reaction force holding portion 64 is separated from the rotary operating rod 100;

(Configuration of rotation drive device 10 according to the first embodiment)
1 to 3 show a rotation drive device 10 according to a first embodiment to which the invention is applied. This rotary drive device 10 generally includes a body portion 11 , a rotary shaft 12 , an electric drive portion 14 and a manual handle 16 .

The main body 11 is integrally formed by a drive unit case 50 that houses a portion of the rotating shaft 12 and the electric drive unit 14, and a grip unit 52 formed to protrude from the side surface of the drive unit case 50. ing.

The rotary shaft 12 is a member whose tip portion 18 is attached (inserted) into a rotary handle attachment hole 102 provided in a rotary operation rod 100 (described later). The cross-sectional shape of the distal end portion 18 is, for example, a regular hexagon to match the shape of the rotary handle mounting hole 102 . A ball plunger 13 is provided at the distal end portion 18 of the rotary shaft 12 as a retainer, but the ball plunger 13 is not an essential component of the present invention.

The electric drive section 14 is a section for electrically rotating the rotating shaft 12 , and generally includes a motor 20 , a gear 22 , a battery 24 and a switch 26 . Among them, the motor 20 and the gear 22 are accommodated in the driving section case 50 of the main body 11 , and the battery 24 is detachably attached to the side surface of the grip section 52 of the main body 11 . Also, the switch 26 is arranged on the side of the grip portion 52 opposite to the side where the battery 24 is attached.

The motor 20 is a member arranged coaxially with the rotating shaft 12 and is connected to the rotating shaft 12 via a gear 22 . Also, the motor 20 receives power from a battery 24 to rotate the rotating shaft 12 .

The battery 24 stores electric power for rotating the motor 20, and is attached to the side surface of the drive unit case 50 so as to be detachable as required, such as when charging. As for the form of the battery 24, for example, a lithium ion battery or a nickel-cadmium battery can be considered, but any form may be used as long as it can store a required amount of power.

As the switch 26, a switch that can rotate the motor 20 forward or reverse is used.

The manual handle 16 is a member offset with respect to the rotating shaft 12, and in this embodiment, the tip of the grip portion 52 in the body portion 11 (the end opposite to the end connected to the drive portion case 50). is mounted (inserted) in a manual handle mounting hole 30 formed in a direction substantially parallel to the rotating shaft 12 at .

It should be noted that throughout this specification, "a state in which the manual handle 16 is offset with respect to the rotating shaft 12" means that the central axis of the rotating shaft 12 and the central axis of the manual handle 16 are separated from each other and are in a parallel positional relationship. It means that there is

More specifically, the manual handle 16 generally includes a handle grip portion 60 , a handle central portion 62 and a reaction force holding portion 64 .

The handle grip portion 60 is a substantially columnar portion that is gripped by an operator when manually operating the rotary drive device 10 as will be described later. 62 can be selected. In other words, the handle grip portion 60 is attached to one end of the handle central portion 62 so as to be able to rise and fall.

The handle center portion 62 is a substantially cylindrical member that is inserted into the manual handle mounting hole 30 formed in the tip portion of the grip portion 52 in a direction substantially parallel to the rotation shaft 12. The handle grip part 60 is attached so that it can be raised and lowered as shown, and a reaction force holding part 64 is attached to the other end. Also, the handle central portion 62 is slidable with respect to the manual handle mounting hole 30 .

The reaction force holding portion 64 is a portion that can be engaged with and disengaged from the rotary operation rod 100, and is engaged with the rotary operation rod 100 when the rotary shaft 12 is rotationally driven using the electric drive portion 14. The rotation force (reaction force) from the electric drive unit 14 can prevent the manual handle 16 from rotating together with the electric drive unit 14 .

More specifically, the reaction force holding portion 64 of this embodiment extends in a direction substantially orthogonal to the central axis of the manual handle 16, and the other end of the handle central portion 62 is connected to the central portion. and a pair of side members 68 protruding from both ends of the central member 66 in directions substantially parallel to the central axis of the manual handle 16 . As a result, the reaction force holding portion 64 is formed to have a substantially U-shaped cross section. A rotary operating rod 100 is fitted in an inner space 70 surrounded by a pair of side members 68 and central member 66 .

(Structure of rotary operation rod 100)
Next, the rotary operating rod 100 to which the rotary drive device 10 described above is attached will be described. As shown in FIG. 4 , the rotary operating rod 100 generally comprises a long rod body 104 , a rotating rod 106 rotatably housed inside the rod body 104 , and a rotating rod 106 inside the rod body 104 . A rotating mechanism 108 connected to the hand side end of 106 is connected to the rotating shaft 12 of the rotary drive device 10, and a rotating handle attachment in which the rotating force of the rotating shaft 12 is transmitted to the rotating rod 106 via the rotating mechanism 108. and a hole 102 .

By rotating the rotation shaft 12 of the rotation drive device 10 attached to the rotation handle attachment hole 102 , the tip of the rotation rod 106 is rotated via the rotation mechanism 108 . The tip of the rotating rod 106 can be attached to a stripping device for stripping the coating of the electric wire, a device for winding an insulating tape around the electric wire, or the like, and can be operated as desired.

(Operating procedure of the rotary operation rod 100 using the rotary drive device 10 according to the first embodiment)
Next, a procedure for operating the rotary operation rod 100 using the rotary drive device 10 according to the first embodiment will be described. First, as shown in FIGS. 5 and 6, the handle grip portion 60 is gripped and the handle center portion 62 is pulled, and the reaction force holding portion 64 is pulled toward the grip portion 52 side.

Next, as shown in FIG. 7, the tip of the rotary shaft 12 of the rotary drive device 10 is inserted into the rotary handle mounting hole 102 of the rotary operating rod 100 .

After that, the handle grip portion 60 aligned with the handle central portion 62 is grasped and the handle central portion 62 is pushed toward the rotary operation rod 100, and the rotary operation rod 100 is inserted into the inner space 70 of the reaction force holding portion 64. The rod body 104 is fitted. Finally, the handle grip portion 60 is folded with respect to the handle central portion 62 .

In this state, when the switch 26 provided on the grip portion 52 of the main body portion 11 is turned on (forward rotation or reverse rotation), the motor 20 that receives power from the battery 24 rotates, and the rotational force is transmitted through the gear 22. It is transmitted to the rotating shaft 12 and the rotating shaft 12 rotates. As a result, the tip of the rotating rod 106 can be rotated as the electric rotating operating rod 100 .

Alternatively, when rotating the tip of the rotating rod 106 as the manual rotating operating rod 100, as shown in FIG. After that, the reaction force holding portion 64 pulls out the entire manual handle 16 in a direction away from the rotary operating rod 100 .

After the reaction force holding portion 64 is released from the engagement with the rotary operation rod 100 in this manner, the entire manual handle 16 is rotated around the rotating shaft 12 while the handle grip portion 60 is held.

As a result, the rotating shaft 12 rotates, and the tip of the rotating rod 106 can be rotated as the manual rotating operating rod 100 .

(Characteristics of the rotary drive device 10 according to the first embodiment)
According to the rotation drive device 10 according to the first embodiment described above, it can be retrofitted to a conventional manual rotary operation rod 100 and used as an electric or manual rotary operation rod 100 .

In addition, since the manual handle 16 is provided with a reaction force holding portion 64 that engages with the rotary operating rod 100, when the rotary operating rod 100 is electrically operated, the rotation of the motor 20 to rotate the rotary shaft 12 is prevented. It is possible to prevent the manual handle 16 from co-rotating due to the force reaction force.

(Configuration and Features of Rotational Drive Device 10 According to Second Embodiment)
Instead of the rotary drive device 10 according to the first embodiment described above, a rotary drive device 10 according to a second embodiment as shown in FIG. 9 may be used.

Specifically, in the first embodiment, by gripping the handle grip portion 60 aligned with the handle central portion 62 and sliding the entire manual handle 16 with respect to the main body portion 11, the reaction force holding portion 64 is held. is engaged with and separated from the rotary operation rod 100. In this respect, in the second embodiment, one end of the manual handle 16 is attached to the main body 11 so as to be capable of being raised and lowered. , the reaction force holding portion 64 formed at the other end of the manual handle 16 is engaged with the rotary operating rod 100. As shown in FIG.

In this state, when the switch 26 provided on the grip portion 52 of the main body portion 11 is turned on (forward rotation or reverse rotation), the motor 20 that receives power from the battery 24 rotates, and the rotational force is transmitted through the gear 22. It is transmitted to the rotating shaft 12 and the rotating shaft 12 rotates. As a result, the tip of the rotating rod 106 can be rotated as the electric rotating operating rod 100 .

Conversely, as shown in FIG. 11, by aligning the manual handle 16 downward in the figure with respect to the main body 11, as shown in FIG. Further, the handle grip portion 60 projecting in the direction orthogonal to the direction in which the reaction force holding portion 64 extends is offset with respect to the rotating shaft 12 .

After the reaction force holding portion 64 is released from the engagement with the rotary operation rod 100 in this manner, the entire manual handle 16 is rotated around the rotating shaft 12 while the handle grip portion 60 is held.

As a result, the rotating shaft 12 rotates, and the tip of the rotating rod 106 can be rotated as the manual rotating operating rod 100 .

(Modification 1)
A shaft lock mechanism may be added to the gear 22 of the electric drive section 14 in the above-described embodiment. In this shaft lock mechanism, when the reaction force holding portion 64 of the manual handle 16 is separated from the rotary operation rod 100, the members connected to the rotating shaft 12 such as the motor 20 and the gear 22 of the electric drive portion 14 do not rotate. It is a mechanism that makes

By providing such a shaft lock mechanism, when the rotary drive device 10 is manually used, when the manual handle 16 is rotated around the rotary shaft 12, the motor 20 and the gear 22 of the electric drive section 14 are locked. It is possible to avoid the problem that the rotation shaft 12 cannot be rotated due to rotation.

This shaft lock mechanism may be realized mechanically according to the operation of the reaction force holding portion 64 in the manual handle 16 (engagement/separation operation with respect to the rotary operation rod 100), or may be realized electrically using a sensor or the like. can be realized.

(Modification 2)
Also, the motor 20 may not operate even if the switch 26 is operated unless the reaction force holding portion 64 of the manual handle 16 is in a position where it engages with the rotary operating rod 100 . As a result, the motor 20 is operated even though the reaction force holding portion 64 is not engaged with the rotary operation rod 100, and the main body portion 11 and the manual handle 16 undesirably rotate about the rotary shaft 12. You can avoid the trouble that it will be.

Such a safety mechanism may be implemented mechanically or electrically using sensors or the like.

(Modification 3)
In the above-described embodiment, the switch 26 of the electric drive section 14 is provided on the grip section 52 of the main body section 11, but the position of the switch 26 is not limited to this, and can be arranged at any position. good.

(Modification 4)
In the above-described embodiment, the reaction force holding portion 64 is formed in a substantially U-shape. 68 may constitute a reaction force holding portion 64 .

In this case, from which end of the central member 66 one side member 68 protrudes depends on the direction of rotation of the motor 20. The end that is easier to prevent undesired rotation about 12 may be selected.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

DESCRIPTION OF SYMBOLS 10... Rotary drive device 11... Main body part 12... Rotating shaft 13... Ball plunger 14... Electric drive part 16... Manual handle 18... Tip part (of rotating shaft 12) 20... Motor 22... Gear 24 Battery 26 Switch 30 Manual handle mounting hole 50 Actuator case 52 Grip 60 Handle grip 62 Handle central portion 64 Reaction force holding portion 66 Central member 68... Side member, 70... Inner space 100... Rotary operation rod, 102... Rotary handle mounting hole, 104... Rod main body, 106... Rotating rod, 108... Rotation mechanism

Claims (5)

a rotary shaft whose tip is attached to the rotary handle mounting hole of the rotary operation rod;
an electric drive unit that electrically rotates the rotating shaft;
a manual handle offset with respect to the axis of rotation ;
The manual handle is engageable with the rotary operation rod to prevent the manual handle from rotating together when the rotary shaft is rotationally driven by the electric drive unit, and is engageable with and detachable from the rotary operation rod. A reaction force holding part is provided
rotary drive. The manual handle is tiltable with respect to the central axis of the rotating shaft,
when the manual handle is in one state, the reaction force holding portion is engaged with the rotary operation rod;
When the manual handle is in the other state, the reaction force holding portion is separated from the rotary operation rod, and the rotary shaft can be rotationally driven using the manual handle. Item 1. The rotary drive device according to item 1 . 3. The rotary drive device according to claim 1, further comprising a shaft lock mechanism that prevents the electric drive section from rotating in a state in which the reaction force holding section is separated from the rotary operation rod. The rotation drive device according to any one of claims 1 to 3 , wherein the electric drive section can rotate the rotating shaft forward or backward. A rotary operation rod comprising the rotary drive device according to any one of claims 1 to 4 .

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