JP2020150620A - Rotary drive device, and rotary operation rod provided with the same - Google Patents

Abstract

To provide a rotary drive device that can be retrofitted to a manual rotary operation rod that has been previously owned, and used as an electrical or manual rotary operation rod.SOLUTION: A rotary drive device 10 fitted to a rotary operation rod 100 and used, is configured by: a rotary shaft 12 with a tip portion fitted into a fitting hole 102 of a rotary handle of the rotary operation rod 100; an electric drive portion 14 for electrically rotary driving the rotary shaft 12; and a manual handle 16 offset with respect to the rotary shaft 12.SELECTED DRAWING: Figure 1

Description

The present invention is a rotation drive device used by attaching to a rotation operation rod used for, for example, stripping an overhead wire coating or winding an insulating tape in distribution line construction, and a rotation operation rod provided with the rotation operation rod. Regarding.

In so-called distribution line construction, where overhead wires (hereinafter simply referred to as "wires") are cut and branched, or the wire coating is stripped to connect the wires to each other, an insulating rod is used for the charging part. The technology of indirectly performing the construction without touching it directly is widespread.

In such construction, rotary control rods are used for the work of stripping electric wires and wrapping insulating tape.

Conventionally, the rotary handle attached to the rotary operation rod has been manually rotated, but in order to save labor, an electric screwdriver is attached to the rotary operation rod and rotated instead of the rotary handle.

Generally, a gun type screwdriver is used as the electric screwdriver. For this reason, when an attempt is made to rotate the rotation operating rod with a gun-type electric screwdriver, the rotation operating rod may receive a rotational reaction force and the operator's hand may be shaken strongly.

Furthermore, the work of attaching and detaching the gun-type electric screwdriver to and from the rotary operation rod is inconvenient, and there is a risk that the electric screwdriver or the like may be dropped due to a mess.

In order to deal with such a problem, for example, a remote-insulated rotary operation tool disclosed in Patent Document 1 in which a drive unit for rotation is built in a rotary operation rod and an operation button is provided. Proposed.

Japanese Unexamined Patent Publication No. 2012-175815

However, if the rotary operation tool as disclosed in Patent Document 1 is replaced with a new one, there is a possibility that the manual rotary operation rod previously owned may be wasted, which causes a problem in terms of cost. ..

The present invention has been made in view of such a problem, and an object of the present invention is to retrofit it to a manual rotary operation rod that has been possessed before and use it as an electric or manual rotary operation rod. It is an object of the present invention to provide a rotation drive device capable of the above, and a rotation operation rod provided with the rotation drive device.

According to one aspect of the invention
A rotating shaft whose tip is attached to the rotating handle mounting hole of the rotating operation rod,
An electric drive unit that electrically drives the rotary shaft,
A rotary drive device is provided that includes a manual handle that is offset with respect to the rotary shaft.

Preferably, the manual handle is attached to the rotation operation rod, which is engaged with the rotation operation rod when the rotation shaft is rotationally driven by the electric drive unit to prevent the manual handle from rotating together. A reaction force holding portion that can be engaged and disengaged is provided.

Preferably, the manual handle is retractable with respect to the central axis of the rotating shaft, and when the manual handle is in one state, the reaction force holding portion engages with the rotating operating rod. When the manual handle is in the other state, the reaction force holding portion is separated from the rotation operating rod, and the rotation shaft can be rotationally driven by using the manual handle.

Preferably, it is provided with a shaft lock mechanism for preventing the electric drive unit from rotating when the reaction force holding unit is separated from the rotation operation rod.

Preferably, the electric drive unit is capable of rotating the rotating shaft in the forward or reverse direction.

According to other aspects of the invention
A rotation operation rod including the above rotation drive device is provided.

According to the present invention, it is possible to provide a rotation drive device that can be retrofitted to a previously owned manual rotation operation rod and used as an electric or manual rotation operation rod, and a rotation operation rod provided with the rotation drive device. It was.

It is a perspective view which shows the rotation drive device 10 which concerns on 1st Embodiment to which this invention was applied. It is a front view which shows the rotary drive device 10 which concerns on 1st Embodiment to which this invention was applied. It is a partial cross-sectional view which shows the rotary drive device 10 which concerns on 1st Embodiment to which this invention was applied. It is a front view which shows an example of a rotation operation rod 100. It is a perspective view which shows the state which pulled the reaction force holding part 64 of the rotary drive device 10 which concerns on 1st Embodiment to which this invention was applied. It is a front view which shows the state which pulled the reaction force holding part 64 of the rotary drive device 10 which concerns on 1st Embodiment to which this invention was applied. It is a front view which shows the state which attached the rotation drive device 10 which concerns on 1st Embodiment to a rotation operation rod 100, and also engaged the reaction force holding part 64 with the rotation operation rod 100. It is a front view which shows the state which attached the rotation drive device 10 which concerns on 1st Embodiment to a rotation operation rod 100, and separated the reaction force holding part 64 from the rotation operation rod 100. It is a perspective view which shows the rotation drive device 10 which concerns on 2nd Embodiment to which this invention was applied. It is a front view which shows the state which attached the rotation drive device 10 which concerns on 2nd Embodiment to a rotation operation rod 100, and also engaged the reaction force holding part 64 with the rotation operation rod 100. FIG. 5 is a perspective view showing a state in which the reaction force holding portion 64 of the rotation driving device 10 according to the second embodiment to which the present invention is applied is positioned so as to be separated from the rotation operating rod 100. It is a front view which shows the state which attached the rotation drive device 10 which concerns on 2nd Embodiment to a rotation operation rod 100, and separated the reaction force holding part 64 from the rotation operation rod 100.

(Structure of Rotational Drive Device 10 According to First Embodiment)
1 to 3 show a rotary drive device 10 according to a first embodiment to which the present invention is applied. The rotary drive device 10 generally includes a main body portion 11, a rotary shaft 12, an electric drive portion 14, and a manual handle 16.

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

The rotary shaft 12 is a member whose tip 18 is mounted (fitted) into the rotary handle mounting hole 102 provided in the rotary operation rod 100 (described later). The cross-sectional shape of the tip portion 18 is formed into, for example, a regular hexagon so as to match the shape of the rotary handle mounting hole 102. A ball plunger 13 is provided at the tip 18 of the rotating shaft 12 to prevent it from coming off, but the ball plunger 13 is not an essential component of the present invention.

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

The motor 20 is a member arranged on the same axis as the rotating shaft 12, and is connected to the rotating shaft 12 via a gear 22. Further, the motor 20 receives electric power from the 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 that it can be attached and detached as needed during charging or the like. As the type of the battery 24, for example, a lithium ion battery or a nickel-cadmium battery can be considered, but any type may be used as long as it can store the required capacity of electric power.

As the switch 26, a switch 26 capable of rotating the motor 20 in the forward direction or in the reverse direction is used, but instead of the switch 26, a switch 26 capable of only the forward rotation or the reverse rotation may be used.

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

Throughout the present specification, the "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 have a parallel positional relationship. It means that it is in.

The manual handle 16 will be described in detail. The manual handle 16 generally includes a handle grip portion 60, a handle central portion 62, and a reaction force holding portion 64.

As will be described later, the handle grip portion 60 is a substantially columnar portion that the operator grips when manually operating the rotary drive device 10, and is in a state of being linear with the central portion 62 of the handle and the central portion of the handle. It is possible to select a folded state with respect to 62. That is, the handle grip portion 60 is vertically attached to one end of the handle central portion 62.

The handle central portion 62 is a substantially columnar member fitted into a manual handle mounting hole 30 formed in a direction substantially parallel to the rotation shaft 12 at the tip portion of the grip portion 52, and one end thereof is described above. As described above, the handle grip portion 60 is attached so as to be retractable, and the reaction force holding portion 64 is attached to the other end. Further, 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 detached from the rotation operating rod 100, and is said to be engaged with the rotation operating rod 100 when the rotating shaft 12 is rotationally driven by using the electric driving unit 14. The rotational force (reaction force) from the electric drive unit 14 can prevent the manual handle 16 from rotating together with the electric drive unit 14.

The reaction force holding portion 64 of the present embodiment will be described in detail. The reaction force holding portion 64 of the present 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. It has a central member 66, 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 in a substantially "U" shape in cross-sectional shape. The rotation operating rod 100 is fitted in the inner space 70 surrounded by the pair of side members 68 and the central member 66.

(Structure of rotary operation rod 100)
Next, the rotation operation rod 100 to which the above-mentioned rotation drive device 10 is attached will be described. As shown in FIG. 4, the rotation operating rod 100 is roughly a long rod body 104, a rotating rod 106 rotatably housed inside the rod body 104, and a rotating rod inside the rod body 104. A rotary handle mounting that connects the rotary mechanism 108 connected to the hand side end of the 106 and the rotary shaft 12 of the rotary drive device 10 and transmits the rotational force of the rotary shaft 12 to the rotary rod 106 via the rotary mechanism 108. It has a hole 102.

By rotating the rotary shaft 12 of the rotary drive device 10 mounted in the rotary handle mounting hole 102, the tip of the rotary rod 106 is rotated via the rotary mechanism 108. The tip of the rotary rod 106 can be attached to a peeling device for stripping the coating of the electric wire, a device for winding an insulating tape around the electric wire, or the like to perform a desired operation.

(Operation procedure of the rotation operation rod 100 using the rotation drive device 10 according to the first embodiment)
Next, a procedure for operating the rotation operating rod 100 using the rotation driving 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 central portion 62 is pulled, and the reaction force holding portion 64 is pulled toward the grip portion 52.

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

After that, the handle grip portion 60 which is aligned with the handle central portion 62 is grasped and the handle central portion 62 is pushed toward the rotation operation rod 100, and the rotation operation rod 100 is inserted into the inner space 70 of the reaction force holding portion 64. The rod body 104 of the above is fitted. Finally, the handle grip portion 60 is brought into a folded state 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 receiving the electric power from the battery 24 rotates, and the rotational force is transmitted via the gear 22. It is transmitted to the rotating shaft 12 and the rotating shaft 12 rotates. As a result, the tip of the rotary rod 106 can be rotated as the electric rotary operation rod 100.

Instead of this, when the tip of the rotating rod 106 is rotated as the manual rotation operating rod 100, the handle grip portion 60 is returned so as to be in a straight line with respect to the handle central portion 62 as shown in FIG. After that, the reaction force holding portion 64 pulls out the entire manual handle 16 in the direction away from the rotation operating rod 100.

In this way, after releasing the state in which the reaction force holding portion 64 is engaged with the rotation operating rod 100, the entire manual handle 16 is rotated around the rotating shaft 12 while the handle grip portion 60 is gripped.

As a result, the rotating shaft 12 can be rotated to rotate the tip of the rotating rod 106 as a manual rotation 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 the manual rotation operation rod 100 previously possessed and used as an electric or manual rotation operation rod 100.

Further, since the manual handle 16 is provided with the reaction force holding portion 64 that engages with the rotation operation rod 100, when the rotation operation rod 100 is used electrically, the rotation of the motor 20 that tries to rotate the rotation shaft 12 It is possible to prevent the manual handle 16 from rotating together due to the reaction force of the force.

(Structure 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, the rotary drive device 10 according to the second embodiment may be used as shown in FIG.

Specifically, in the first embodiment, the reaction force holding portion 64 is formed by gripping the handle grip portion 60 which is aligned with the handle central portion 62 and sliding the entire manual handle 16 with respect to the main body portion 11. Was engaged in and separated from the rotation operation rod 100. In this regard, in the second embodiment, one end of the manual handle 16 is attached to the main body portion 11 so as to be vertically retractable, and the manual handle 16 is bent with respect to the main body portion 11 to be in a state of being bent. As shown in the above, the reaction force holding portion 64 formed at the other end of the manual handle 16 engages with the rotation operating rod 100.

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 receiving the electric power from the battery 24 rotates, and the rotational force is transmitted via the gear 22. It is transmitted to the rotating shaft 12 and the rotating shaft 12 rotates. As a result, the tip of the rotary rod 106 can be rotated as the electric rotary operation rod 100.

On the contrary, as shown in FIG. 11, by aligning the manual handle 16 with respect to the main body 11 in the downward direction in the drawing, the reaction force holding portion 64 is moved from the rotation operating rod 100 as shown in FIG. Further, the handle grip portion 60 projecting in a direction orthogonal to the extending direction of the reaction force holding portion 64 is in a state of being offset with respect to the rotation axis 12.

In this way, after releasing the state in which the reaction force holding portion 64 is engaged with the rotation operating rod 100, the entire manual handle 16 is rotated around the rotating shaft 12 while the handle grip portion 60 is gripped.

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

(Modification example 1)
A shaft lock mechanism may be added to the gear 22 of the electric drive unit 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 rotation operating 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 to do so.

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

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

(Modification 2)
Further, 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 rotation operating rod 100. As a result, the motor 20 is operated even though the reaction force holding portion 64 is not engaged with the rotation operating rod 100, and the main body portion 11 and the manual handle 16 rotate undesirably around the rotation shaft 12. It is possible to avoid the trouble that occurs.

Such a safety mechanism may be realized mechanically or electrically using a sensor or the like.

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

(Modification example 4)
In the above-described embodiment, the reaction force holding portion 64 is formed in a substantially "U" shape, but when the motor 20 is rotated in only one direction of forward rotation or reverse rotation, it is not a pair but one side member. The reaction force holding portion 64 may be formed by 68.

In this case, as to which end of the central member 66 the one side member 68 is projected from, the main body 11 and the manual handle 16 rotate the shaft when the motor 20 is operated according to the rotation direction of the motor 20. The end that is easy to prevent undesirably rotating around 12 may be selected.

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

10 ... rotary drive device, 11 ... main body, 12 ... rotary shaft, 13 ... ball plunger, 14 ... electric drive, 16 ... manual handle, 18 ... tip (of rotary shaft 12), 20 ... motor, 22 ... Gear, 24 ... Battery, 26 ... Switch, 30 ... Manual handle mounting hole 50 ... Drive case, 52 ... Grip part 60 ... Handle grip part, 62 ... Handle center part, 64 ... Reaction force holding part, 66 ... Central member, 68 ... Side member, 70 ... Inner space 100 ... Rotation operation rod, 102 ... Rotation handle mounting hole, 104 ... Rod body, 106 ... Rotation rod, 108 ... Rotation mechanism

Claims (6)

A rotating shaft whose tip is attached to the rotating handle mounting hole of the rotating operation rod,
An electric drive unit that electrically drives the rotary shaft,
A rotary drive with a manual handle offset with respect to the rotary shaft. The manual handle can be engaged with and detached from the rotation operation rod, which is engaged with the rotation operation rod when the rotation shaft is rotationally driven by the electric drive unit to prevent the manual handle from rotating together. The rotary drive device according to claim 1, wherein a reaction force holding portion is provided. The manual handle can be tilted 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 rotation operating rod.
When the manual handle is in the other state, the reaction force holding portion is separated from the rotation operating rod, and the rotation shaft can be rotationally driven by using the manual handle. Item 2. The rotary drive device according to item 2. The rotation drive device according to claim 2 or 3, further comprising a shaft lock mechanism for preventing the electric drive unit from rotating when the reaction force holding unit is separated from the rotation operation rod. The rotary drive device according to any one of claims 1 to 4, wherein the electric drive unit can rotate the rotary shaft in the forward or reverse direction. A rotary operating rod comprising the rotary drive device according to any one of claims 1 to 5.

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