JP3097480B2 - Manual handle retaining device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual switch for preventing a handle during operation from coming off the operating shaft when the operating shaft of a disconnector or a ground switch of a gas insulated switchgear is rotated by a manual handle. The present invention relates to a handle retaining device.

[0002]

2. Description of the Related Art A conventional manual handle retaining device will be described with reference to FIGS. In these figures, 1 is a front and rear operation shaft for operating a disconnector or a ground switch, 2 is a cutout formed at a front end of the operation shaft 1, 3 is a screw formed on the operation shaft 1, 4 is the operation axis 1
A manual handle, which is detachably connected to the front end of the handle and rotates the operating shaft 1, 5 is a connection hole formed at the tip of the handle 4, and 6 is provided in the connection hole 5 at right angles to the axial direction of the handle 4. The fitting pin 7 is an annular retaining groove formed on the peripheral surface of the distal end of the handle 4. The coupling hole 5 is fitted in the distal end of the operating shaft 1, and the fitting pin 6 is fitted in the cutout 2. And the handle 4 is connected to the operation shaft 1.

Reference numeral 8 denotes a slider screwed to the screw portion 3 of the operation shaft 1, reference numeral 9 denotes a guide rod projecting to the left and right of the slider 8, and reference numeral 10 denotes an end of the right guide rod 9. The guide rod 9 is fitted in the forked portion, and the rotation of the slider 8 is prevented.

[0004] Reference numeral 11 denotes a cam shaft which is provided in parallel and rotatably near the left side of the operation shaft 1, and 12 denotes a short spiral guide groove formed on the peripheral surface of the cam shaft 11. The tip of one of the guide rods 9 is fitted. 13 is the camshaft 1
Reference numeral 1 denotes a support shaft attached to the tip, reference numeral 14 denotes a rotating plate attached to the tip of the support shaft 13, reference numeral 15 denotes a retaining piece formed by projecting from a part of the rotating plate 14. I do.

Next, a procedure for manually operating a disconnecting switch or a grounding switch will be described. As shown in FIGS. 4 and 5, when the slider 8 is located at the front and in the disengaged state, the connecting hole 5 of the manual handle 4 is fitted to the operating shaft 1 and the fitting pin 6 in the connecting hole 5 is operated. Fit into the notch 2 of the shaft 1. At this time, the retaining piece 15 of the rotating plate 14 is located outside the retaining groove 7 of the handle 4.

Next, when the handle 4 is rotated, the operation shaft 1 rotates integrally, the slider 8 moves rearward, and the left guide rod 9 moves rearward in the guide groove 12 to cause the cam to move. The shaft 11 rotates, and in the initial stage of rotation, the retaining piece 15 of the rotating plate 14 fits into the retaining groove 7 of the handle 4 as shown in FIG. In this state, the slider 8 is
With the rotation of the handle 4, the handle 4 is held until it is located rearward, and the handle 4 does not fall out of the operation shaft 1 during the operation of the handle 4.

[0007] At the end of the turning operation of the handle 4, the handle 4 is turned on, and the left guide rod 9 is moved into the guide groove 12.
When the rotary plate 14 is rotated, the retaining piece 15 comes out of the retaining groove 7 and the handle 4 can be removed from the operation shaft 1.

Next, when the disconnecting switch or the earthing switch which is in the on state is turned off, the operation of the handle 4 is performed in the same procedure, and the slider 8 located at the rear is moving forward. , The retaining piece 15 is fitted into the retaining groove 7 to prevent the handle 4 from coming off.

[0009]

In the case of the conventional manual handle retaining device, the guide groove 1 on the peripheral surface of the cam shaft 11 is provided.
2 is difficult to process, and the number of parts constituting the apparatus is large and the structure is complicated.

The present invention has been made in view of the above points, and has as its object to provide a manual handle retaining device which is easy to process, has a small number of parts, and has a simple structure.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a manual handle retaining device of the present invention comprises a front-rear operating shaft for operating devices such as a disconnector and a grounding switch by rotation, and an operating shaft. A manual handle that detachably connects to the front end of the handle and rotates the operating shaft, an annular retaining groove formed on the peripheral surface of the handle tip, and a screw that is screwed onto the operating shaft and the operating shaft rotates. A slider that moves back and forth,
A slider pin provided on the slider, an operating plate whose base is rotatably supported, a retaining piece provided on the front end of the operating plate and coming into and out of the retaining groove; When the pin is located at the front end and the rear end, the retaining pin is disengaged from the retaining groove when the pin is located at the front end and the rear end, and the retaining piece is fitted into the retaining groove when the pin is located at the middle part. And a fitting groove.

[0012]

In the manual handle retaining device of the present invention having the above-mentioned structure, a manual handle is connected to an operation shaft in the front-rear direction for operating a device such as a disconnector or a ground switch by rotation, and the handle of the handle is removed. An annular retaining groove is formed on the peripheral surface of the distal end, and a slider pin is provided on a slider that is screwed into the thread of the operating shaft and moves in the front-rear direction by rotation of the operating shaft. It is fitted into the fitting groove of the rotatably supported operating plate, and a retaining piece is provided at the front end of the operating plate, and the slider pin comes off when the slider pin is located at the front end and the rear end of the fitting groove. When the stopper is pulled out of the retaining groove and the pin is located in the middle part, the manual handle is connected to the operating shaft so that the retaining piece is fitted into the retaining groove, and the disconnector or ground switch is operated. When rotating the shaft with the handwheel, Without dollar exit the operation shaft is easily processed components of the device, and,
The number of parts is small and the structure is simple.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment will be described with reference to FIGS. In these figures, the same reference numerals as those in FIGS. 4 to 6 indicate the same or corresponding elements, and the different points are as follows.

Reference numeral 16 denotes a slider pin provided on the lower surface of the slider 8, reference numeral 17 denotes an operation plate provided below the slider 8 in parallel with the operation shaft 1, and reference numeral 18 denotes a rear end of the operation plate 17. A support shaft 19 is provided at the front end of the operating plate 17 so as to be rotatable, and a retaining piece that enters and exits the retaining groove 7 is formed on the operating plate 17 in the longitudinal direction of the operating plate 17. The fitting groove is a fitting groove in which the pin 16 is fitted, and the fitting groove 20 is formed from each of the following successive parts.

That is, a long end which is located between the front end 21 and the rear end 22 parallel to the longitudinal direction of the operating plate 17 and the both ends 21 and 22 and is slightly inclined with respect to the longitudinal direction of the operating plate 17. An intermediate portion 23, both ends of the intermediate portion 23 and the front end portion 21;
A short front end inclined portion 24 and a rear end inclined portion 25 are formed between the front end inclined portion 24 and the rear end portion 22. The slider pin 1
A roller is mounted on the peripheral surface of the lower end of
, And the movement of the slider pin 16 is facilitated.

Next, a procedure for manually operating the disconnector or the earthing switch will be described. Slider pin 16
Is located at the front end 21 of the fitting groove 20, and in the cut state,
As shown in FIG. 2, the manual handle 4 is fitted to the operation shaft 1, and the fitting pin 6 in the connection hole 5 is fitted to the cutout 2 of the operation shaft 1. At this time, the retaining piece 19 of the operation plate 17 is located outside the retaining groove 7 of the handle 4.

Next, when the handle 4 is rotated, the operation shaft 1 is rotated, and the slider 8 is moved backward, and the slider pin 1 is moved.
6 moves from the front end 21 of the fitting groove 20 along the front inclined portion 24. At this time, the front end inclined portion 24 causes
As shown in A and a, the retaining piece 19 of the operation plate 17 is fitted in the retaining groove 7 of the manual handle 4, so that the handle 4 cannot be removed from the operation shaft 1.

When the handle 4 is further rotated, the slider 8 moves from the start end of the intermediate portion 23 shown in FIGS. 3B and 3B to the end end of the intermediate portion 23 shown in FIGS. 3C and 3C. At this time, since the intermediate portion 23 is slightly inclined, the operation plate 17 does not move, and the state of being fitted in the retaining groove 7 of the retaining piece 19 is maintained.

Next, when the handle 4 is further rotated, the slider pin 16 moves to the rear end 22 of the fitting groove 20. At this time, as shown in FIGS.
9 comes out of the retaining groove 7, the disconnecting switch or the earthing switch is turned on, and the handle 4 can be pulled out of the operation shaft 1.

Next, when the disconnecting switch or the grounding switch in the on state is turned off, the handle 4 is rotated in the reverse direction. At this time, the slider pin 16 located at the rear end 22
Moves to the front end portion 21, but in the intermediate portion 23, the state in which the retaining piece 19 is fitted in the retaining groove 7 is maintained,
The handle 4 is prevented from coming off.

[0021]

Since the present invention is configured as described above, it has the following effects. The manual handle retaining device of the present invention is provided with an operation shaft 1 in the front-rear direction for operating devices such as a disconnector or a ground switch by rotation.
The manual handle 4 is connected, and an annular retaining groove 7 is formed on the peripheral surface of the distal end portion of the handle 4, which is screwed into the screw portion 3 of the operation shaft 1, and moves in the front-rear direction by the rotation of the operation shaft 1. A slider pin 16 provided on the slider 8 is fitted into a fitting groove 20 of an operating plate 17 whose base is rotatably supported, and a retaining piece 19 at the tip of the operating plate 17 is The retaining piece 19 is pulled out of the retaining groove 7 while being positioned at the front end 21 and the rear end 22 of the fitting groove 20, and the retaining piece 19 is retained when the pin 16 is located at the intermediate portion 23. 7, the manual handle 4 is connected to the operation shaft 1, and when the disconnector or the earthing switch is operated, the handle 4 cannot be removed unless the on / off operation is completed. Separation is prevented and the device is configured That the processing of the parts is also easy, and less mechanisms number of parts is also easy.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of the present invention.

FIG. 2A is a cutaway front view of the handle connected state of FIG. 1, FIG.
FIG. 3 is a cut-away plan view of A.

FIGS. 3A, 3B, 3C, and 3D are cutaway front views of the operation process of the present invention, and FIGS. 3A, 3B, 3C, and 3D are cutaway plan views of A, B, C, and D, respectively.

FIG. 4 is an exploded perspective view of a conventional example.

FIGS. 5A and 5B are a cut front view and a rotated cut plan view of a conventional example.

FIGS. 6A and 6B are a cut front view and a rotated cut plan view of another state of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operating shaft 4 Handle 7 Retaining groove 8 Slider 16 Slider pin 17 Operating plate 19 Retaining piece 20 Fitting groove 21 Front end 22 Rear end 23 Intermediate part

Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) H02B 1/30-1/32 H02B 1/14 H01H 31/02 H01H 33/42

Claims (1)

(57) [Claims] 1. A front-rear operating shaft for operating devices such as a disconnector and a grounding switch by rotation, a manual handle removably connected to a front end of the operating shaft, and rotating the operating shaft; An annular retaining groove formed on the peripheral surface of the distal end of the slider, a slider that is screwed into the threaded portion of the operation shaft, and moves in the front-rear direction by rotation of the operation shaft; a slider pin which is, an actuation plate which base is rotatably supported, is provided at the front end of the operating plate, the retainer piece to and from the retaining groove, formed in the actuating plate, the sliding When the child pin is fitted and the pin is located at the front end and the rear end, the retaining piece is pulled out of the retaining groove, and when the pin is located at the middle part, the retaining piece is pulled out. Manual handle with mating groove to be fitted into stop groove Only stop device.