JP4311525B2 - Socket tool for remote control - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a socket tool for remote control used when a nut is tightened to a bolt portion at a remote position such as a bolt portion of a pin insulator attached to an arm of a utility pole via a washer.
[0002]
[Prior art]
As shown in FIG. 6, the pin insulator 20 attached to the utility pole or the like and supporting the power transmission / distribution electric wire is provided with a bolt portion 21 to be attached to an arm 25 horizontally provided on the utility pole, as shown in FIG. 20 is inserted through a through hole 26 formed in the arm 25 from above, and is held by the arm 25 by fastening a nut 23 to a protruding portion 27 of the bolt portion 21 via a washer (a plain washer, a spring washer) 22. ing. Conventionally, as a tightening tool for the nut 23 used when the pin insulator 20 is replaced, a socket tool having an insulating remote control rod (not shown) is known, and such a tool is practically used. Various proposals have been made as shown in Japanese Patent No. 2584355.
[0003]
As shown in FIG. 8, the socket tool disclosed in the above publication has a nut holder deep socket main body having a required length in a cylindrical holder 32 in which a washer holding socket member 31 having a magnet 30 is provided. 33 is configured to be inserted from the lower end portion of the holder 32 so as to be fitted to the socket member 31 via the biasing member 34. As a nut tightening method using this socket tool, the nut 23 is held in the deep socket main body 33 and the washer 22 is magnetically held in the socket member 31 by the magnet 30 to perform an insulating operation. The washer 22 and the nut 23 are fitted to the bolt portion 21 of the pin lever 20 by operating the rod, and then the deep socket body 33 is rotated while moving upward against the bias of the biasing member 34. It was something.
[0004]
[Problems to be solved by the invention]
However, in the conventional socket tool, the nut provided in the socket member for holding the washer can be securely tightened with the nut in a state where the washer is securely held. No measures were taken to ensure this. For this reason, there has been a problem that the washer or the nut falls due to the fine movement of the nut, particularly when the nut is tightened from the lateral direction. Furthermore, the conventional tool has a problem of high cost and high failure rate because of its complicated structure.
[0005]
In view of the above problems, an object of the present invention is to provide a socket tool for remote operation that can always hold a nut and a washer reliably, is low in cost, has few failures, and has good operability.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a remote operation socket tool comprising a remote control rod connected to the lower end of a socket body, and used for fastening a nut to a bolt portion at a remote position via a washer. The socket main body communicates with the washer holding portion that holds the washer provided at the upper end opening, the nut holding portion that communicates with the washer holding portion and holds the nut provided below the washer, and the nut holding portion. A bolt insertion portion through which a bolt portion provided below and a connection portion that can be detachably connected to the remote control rod provided at the lower end portion are integrally formed, and the inner surface of the washer holding portion And a ball plunger on the inner surface of the nut holding portion.
[0007]
According to the present invention, the washer is securely held by magnetically holding it with the magnet of the washer holding portion, and further, the nut is securely held by pressing and holding the ball plunger provided in the nut holding portion, It is possible to perform remote work such as tightening the nut while securely holding both.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to FIGS.
[0009]
The remote operation socket tool of the present embodiment includes a socket body 1 for fastening a nut 23 to a bolt portion 21 of a pin insulator 20 via a washer 22 (a plain washer, a spring washer), and the socket body 1 is remotely operated. Insulating remote control rod 2 for connecting, and connecting adapter 3 for connecting the socket body 1 and remote control rod 2 to each other.
[0010]
The socket body 1 is formed in a cylindrical shape having a large-diameter head 44 as shown in FIGS. 1 to 3, and the inner peripheral side hollow portion is directed from the upper end opening toward the lower end opening. A washer holding portion 4 that holds the washer 22, a nut holding portion 5 that holds the nut 23 in a non-rotatable manner, a bolt insertion portion 6 through which the bolt portion 21 is inserted, and an adapter connection portion 7 that is connected to the connection adapter 3 are formed. It has a configuration.
[0011]
The washer holding portion 4 is formed to have a predetermined depth downward from the upper end opening of the socket body 1 so that the cross-sectional shape thereof is a square, and a plurality of magnets 8 are embedded on the inner surface thereof. The washer 22 is magnetically held by the magnet 8 when inserted into the washer holding portion 4. The cross-sectional shape of the washer holding portion 4 is a square that circumscribes the circular washer 22 by providing a slight play, thereby preventing the washer 22 from being displaced and arranging the magnet 8 at the place where the washer 22 is in contact. As a result, the washer 22 can be reliably held. The cross-sectional shape of the washer holding portion 4 may be other shapes such as a circle.
[0012]
The nut holding part 5 is formed to have a predetermined depth downward from the washer holding part 4 so that the cross-sectional shape of the inner peripheral surface thereof is a regular hexagon, and a ball that presses and holds the nut 23 on one side face thereof. A plunger 9 is provided. As shown in FIG. 2, the ball plunger 9 includes a sphere housing hole 10 having an opening with a predetermined diameter on one side surface of the nut holding portion 5, a housing screw 11 screwed into the sphere housing hole 10, A sphere 12 having a diameter slightly larger than the diameter of the opening and a spring 13 are formed, and the sphere 12 is urged by the spring 13 so that a part of the sphere 12 protrudes outward from the opening. Yes. The nut 23 is pressed and held by the sphere 12 of the ball plunger 9 when inserted into the nut holding portion 5. In addition, the cross-sectional shape of the said nut holding | maintenance part 5 may be a square according to the shape of the nut 23, for example.
[0013]
The bolt insertion part 6 includes a taper part 14 having a predetermined depth tapered from the nut holding part 5 and a cylindrical part 15 having a depth larger than the height of the bolt part 21. ing.
[0014]
As shown in FIG. 3, the adapter connecting portion 7 is formed so that the cross-sectional shape of the inner peripheral surface thereof is a square between the lower end of the bolt insertion portion 6 and the lower end opening.
[0015]
As shown in FIG. 4, the remote control rod 2 has a grip 42 and a rain gutter 43 attached to a cylindrical operation rod 40, and a connected portion 45 for connecting to the connection adapter 3 at the tip. Is provided. The connected portion 45 is provided with an engaging pin 50 protruding sideways.
[0016]
As shown in FIG. 5, the connection adapter includes a socket-side fitting portion 46 formed in a square cross-section to be inserted into the adapter connection portion 7 of the socket body 1 at the upper portion, and the remote control rod 2 at the lower portion. An operating rod side fitting portion 47 provided with a hollow portion for accommodating the connected portion 45 is provided. The operation rod side fitting portion 47 is formed with a substantially L-shaped engagement slit 51 that introduces the engagement pin 50 and engages it.
[0017]
By connecting the socket main body 1 and the remote control rod 2 detachably through the connection adapter 3 in this manner, as shown in FIG. 7, the dimensions such as the diameters of various washers 22, nuts 23, and bolt portions 21 are provided. The diameter of the washer holding part 4 is changed to a socket body 1 in which the diameters A ₁ and A _{2 of the} washer holding part 4, the diameters B ₁ and B _{2 of} the nut holding part and the diameters C ₁ and C _{2 of the} bolt insertion part 6 are appropriately determined It can be set as the structure which can be performed.
[0018]
Next, a tightening operation of the nut 23 to the bolt portion 21 of the pin lever 20 using the remote control socket tool of the present embodiment will be described.
[0019]
First, the socket body 1 adapted to the shape and size of the nut 23 and the like is connected to the remote control rod 2 via the connection adapter 3. Next, the nut 23 is inserted into the nut holding part 5 of the socket tool for remote operation, the nut 23 is pressed and held by the ball plunger 9, the washer 22 is inserted into the washer holding part 4, and the washer 22 is magnetized by the magnet 8. Keep wearing. Thereafter, the remote control rod 2 is operated, and the nut 23 and the washer 22 are aligned and fitted to the bolt portion 21 of the pin lever 20. In addition, when fitting the nut 23 and the washer 22 to the bolt part 21, both are securely held, and there is no fear of dropping or the like. And after fitting both, the remote control stick | rod 2 is rotated to the surroundings of the axial center, the said socket main body 1 is rotated via the said connection adapter 3, and the fastening operation | work of the nut 23 is completed.
[0020]
The work of removing the washer 22 and the nut 23 from the bolt part 21 of the pin lever 20 can be performed by the reverse procedure of the tightening work.
[0021]
【The invention's effect】
According to the present invention, it is possible to perform a nut tightening operation or the like for a bolt portion at a remote position by always holding the nut and the washer securely, and at a low cost, with few failures and good operability. A socket tool for remote control can be provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a socket body of a remote control socket tool according to an embodiment of the present invention.
FIG. 2 is an end view taken along the line II-II in FIG.
FIG. 3 is an end view taken along line III-III in FIG.
FIG. 4 is a front view showing the embodiment.
5A and 5B show a connection adapter of the present embodiment, in which FIG. 5A is a front view thereof and FIG. 5B is a plan view thereof.
FIG. 6 is an explanatory diagram showing a tightening operation between a pin lever and a nut.
7 is a cross-sectional view showing another embodiment of FIG. 1. FIG.
FIG. 8 is a cross-sectional view showing a conventional socket tool.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Socket body 2 Remote control rod 3 Connection adapter 4 Washer holding part 5 Nut holding part 6 Bolt insertion part 7 Connection part 8 Magnet 9 Ball plunger 12 Sphere 13 Spring 21 Bolt part 22 Washer 23 Nut 46 Socket side fitting part 47 Operation Rod side fitting

Claims (2)

In the remote control socket tool, which is formed by connecting a remote control rod to the lower end of the socket main body and fastening the nut to the bolt portion at a remote position via a washer, the socket main body is provided in the upper end opening. A washer holding portion that holds the washer; a nut holding portion that communicates with the washer holding portion and holds a nut provided below the washer; and a bolt portion that communicates with the nut holding portion and provided below the nut holding portion. A bolt insertion part to be inserted and a connection part that can be detachably connected to the remote control rod provided at the lower end part are integrally formed, and a magnet is provided on an inner surface of the washer holding part, and the nut holding part A socket tool for remote operation, characterized in that a ball plunger is provided on the inner surface of the socket.   A connecting adapter having different types of socket main bodies having a common connecting portion, a socket-side fitting portion that fits the connecting portion in the upper portion, and an operation rod-side fitting portion that fits the remote control rod in the lower portion The socket tool for remote operation according to claim 1, wherein the socket body is selectively connected to a remote control rod via the connection adapter.

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