JPS6364022B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a switching operation device such as a switch palm or a disconnector.

(Prior Art) Opening/closing operating devices for opening and closing switches, disconnectors, etc. can be roughly divided into (a) solenoid operated types, (b) air operated types, and (c) electric spring operated types. (a) has a relatively simple structure, but requires an operation source that requires a large amount of power. (B) can be simplified like (B) and can obtain a large operating force, but requires compressed air and is difficult to secure an operating source. (C) stores input energy in the spring, so the operation source requires a small capacity, but since the spring energy decreases during the input process, a correction part for the input force is required, and the structure is compared to others. It is common for it to become more complex.

(Problems to be Solved by the Invention) Therefore, if the structure of the electric spring operated type could be simplified, it would be ideal as an opening/closing operating device. From this point of view, an opening/closing operation device that stores input energy in a closing spring and locks it with a closing catch, and for closing operation, releases the locking of the closing catch, rotates a cam with the closing spring, and rapidly closes the lock via a link device. There is. However, in such a device, the outer circumferential surface of the end of the trip catch is locked to the half-moon-shaped end of the trip shaft rotated by the trip coil, and the outer circumferential surface of the end of the trip catch has a circular arc centered on the pin that pivots the trip catch. Since it is flat and fan-shaped to prevent it from coming off the tripping shaft, the tripping catch has a large inertia during operation and has the disadvantage of slow operation time.

The present invention was developed in view of the above-mentioned drawbacks, and the present invention is an electric spring-operated opening/closing operation in which the end of the tripping catch is made smaller to speed up the operation time and to avoid any trouble even if the tripping catch is detached from the tripping shaft. The purpose is to provide equipment.

[Structure of the invention]

(Means and effects for solving the problem) In an electric spring-operated opening/closing device, the outer surface of the end of the tripping catch that locks on the half-moon-shaped end of the tripping shaft is connected to the tripping catch. By making the triangular arc surface eccentrically centered on the trip shaft side from the pivoting pin, the trip catch operates faster and does not cause problems even if it comes off the trip shaft. A spring-operated opening/closing operating device can be provided.

(Example) An example of the present invention shown in the drawings will be described below. In FIGS. 1 and 2, a movable contact 61 that connects and separates from a fixed contact 60 such as a switch or disconnector
is operated by a pivot shaft 3 pivoted on the frame 2 of the movable arm 1 via a contact spring 62, and has one end connected to a first pin 4 at the end of the movable arm 1. The other link 5 is connected to one of the second links 7 by a second pin 6, and the second link 7
The other one is connected by a third pin 8 to a third link 10 which is pivotally connected to the frame 2 by a pin 9. The other side of the fourth link 11, which is connected to the second pin 6 at one end, is connected to the fourth pin 14 of a trip catch 13 which is pivotally connected to the frame 2 by a pin 12, and the other side is connected to the fourth pin 14 of a trip catch 13, which is connected to the frame 2 by a pin 12, and to the pin 15 of the first link 5. The trip catch 13 is biased counterclockwise by a spring 16 suspended and pulled in the direction of the pivot shaft 3, and is locked by a stopper 17. Free links 18 and 19, which are pivotally connected to pin 9, are connected and integrated at 20, and at the end of free link 18, a roller 21 is rotatably held by a pin 22 and placed in a position opposite to a charging cam 23, which will be described later. It is placed.

A camshaft 24 that fixes the input cam 23 is rotatably supported by the frame 2 with a bearing 25, and a pin 26 of a link 26 fixed to one end.
A roller pin 28, which is pulled downward by a closing spring 27 and protrudes from the side surface of the closing cam 23, is supported by a loading catch 30 fixed to a shaft 29 supported by a bearing 29a on the frame 2, and the closing catch 30 is not shown in the figure. It is urged counterclockwise by a spring and is locked to the stopper 31. The movable arm 1 is biased counterclockwise by a circuit opening spring 32.

A manual handle 34 is attached to one end of the camshaft 24 via a roller clutch 33, a case 36 is attached to the other end via a roller clutch 35, and a display cam 37 is fixed to the end surface. There is. The roller clutches 33 and 35 are one-sided clutches that transmit rotation in only one direction and are free to rotate in the opposite direction. The case 36 engages with a later-described engagement pin 45 of a rotatable spur gear 38, and the spur gear 38 is rotated by a spur gear 40 directly connected to an electric motor 39. Tripping shaft 4 that locks the tripping catch 13
1 is rotated by a tripping coil 42, and a closing shaft 43 that locks the closing catch 30 is rotated by a closing coil 44.

FIG. 3 is a detailed view of the camshaft 24, in which an engagement pin 45 implanted in the spur gear 38 is engaged with a notch 36a of the case 36, and a spring implanted in the spur gear 38 as shown in FIG. A spring 48 is stretched between the hanging pin 46 and a spring hanging pin 47 installed in the radial direction of the case 36.

6 and 7 are detailed views of the case 36,
The engagement pin 45 rests in contact with the A position of the notch 36a of the case 36 by a spring 48.

FIG. 8 is a detailed view of the display cam 37, in which one end of the indicator bar 49 is rotatably supported by a pin 50, the other end is fixed to an indicator plate 51, and is supported by a spring 5.
2, the pin 53 slides on the outer periphery of the display cam 37 and falls into the valley of the display cam 37, operating the position detection switch 54 that opens and closes the circuit of the electric motor 39.

FIG. 9 is a detailed view of the trip catch 13, in which the outer peripheral surface of the end that locks on the half-moon-shaped end 41a of the trip shaft 41 that locks the trip catch 13 has a radius around the pin 12. It has an arcuate surface that is eccentric toward the tripping shaft 41 side,
At the time of return, the end 13a of the tripping catch 13 is prevented from coming into contact with the engaged half-moon-shaped end 41a of the tripping shaft 41.

Next, in the closing operation, rotational force is first stored in the closing cam 23 by the operation spring 27. When an input is given to the electric motor 39, the spur gear 40 rotates the spur gear 38 counterclockwise as shown in FIG. 4, and the engagement pin 45 rotates clockwise from position A in FIG. When the notch 36a hits the B position, the case 36 rotates clockwise together with the roller clutch 35, which engages the camshaft 24 in FIG. 3 and rotates counterclockwise in FIG. The pin 53 shown in FIG. 8 falls into the recess 37, the indicator bar 49 rotates counterclockwise, and the position detection switch 54 operates to open the electric motor 39. The operating position of the position detection switch 54 of the display cam 37 is set in advance to a position slightly beyond the dead point D of the closing spring 27 in FIG. Therefore, after the closing spring 27 slightly exceeds the dead point D, the camshaft 24 automatically rotates rapidly until the roller pin 28 of the closing cam 23 hits the closing catch 30 and is held, and the closing standby shown in FIG. state. At this time, when the engaging pin 45 of the spur gear 38 shown in FIG. 7 pushes the case 36 and rotates it, the spring 4
Only the case 36 is rotated by the force of 8, and a gap G is created between the notch 36a of the case 36 and the pin 45 as shown in FIG. Due to this gap G, the electric motor 39
The overrun is not transmitted to the case 36 until it is opened and stopped by the position detection switch 54.
Therefore, only the rotational force of the closing spring 27 is applied to the closing catch 30. Therefore, excessive force due to overrun of the electric motor 39 does not act on the input catch 30 as in the conventional case.

After the rotational force is stored in the closing cam 23 by the closing spring 27, the released energy of the closing spring 27 causes the roller pin 28 to push the closing catch 30, so that the circular arc surface in contact with the closing catch 30 moves clockwise in FIG. Since it is eccentrically rotated, the charging catch 30 is locked by the half-moon-shaped end face of the charging shaft 43.

To manually store energy, move the manual handle 34 in FIG. 5 clockwise several times, and the roller clutch 33 will rotate clockwise to engage the camshaft 24, and rotate counterclockwise to release the closing spring. 27 and becomes the state shown in FIG. At this time, when the roller clutch 35 is idling, the camshaft 2
4 and holds it so that it does not rotate. The manual handle 34 is stopped at a stopper by a spring (not shown).

In the closing operation, when the closing coil 44 is excited and the closing shaft 43 is rotated clockwise, the closing catch 30 is unlocked, and since the closing catch 30 has an eccentric circular arc surface, it is pushed clockwise and the roller pin 28 is released, and the closing cam 23 is rotated clockwise by the closing spring 27. The input cam 23 pushes the free links 18 and 19 counterclockwise with its cam surface, pushes the third link 10 counterclockwise with the pin 9 as a fulcrum, and closes the second link 7 and the first link 5. The movable arm 1 is rotated clockwise via the movable contact 61 to close the fixed contact 60,
The first link 5, the second link 7 and the third link 10 form a toggle, the fourth link 11 urges the trip catch 13 clockwise and engages the trip shaft 41, and the fourth link 11 It will be in the input state as shown in the figure. At the same time, the electric motor 39 starts rotating, and the charging cam 23 rotates to return to the charging standby state.

In the trip operation, when the trip coil 42 is energized in the closed state shown in FIG. 10, the trip shaft 41 rotates clockwise and the trip catch 1 is turned.
3 is rotated clockwise, the toggle between the first link 5 and the second link 7 is broken, and the movable arm 1 is rotated counterclockwise, and the movable contact 61 is opened from the fixed contact 60 to open the first link 5 and the second link 7. It will be in the state shown in the figure. When the trip catch 13 returns, the end surface of the trip catch 13 is an arcuate surface that is eccentric toward the trip shaft 41 with respect to the pin 12, so the trip shaft 4
Even if 1 has returned, it can smoothly enter the notch of the tripping shaft 41 from the small circular arc surface from the pin 12.

FIG. 11 shows the tripping free state where the tripping operation was performed in the middle of the loading operation from FIG. 1 to FIG. 10.

〔Effect of the invention〕

As described above, according to the present invention, in an electric spring-operated opening/closing operation device, the trip catch of the link device connecting the movable arm biased by the opening spring in the opening direction is connected to the half-moon-shaped end of the trip shaft. The outer circumferential surface of the end that locks into the section is made into an arcuate surface whose center is eccentrically located on the trip shaft side from the pin that pivots the trip catch. After the tripping operation is performed by releasing the lock and breaking the link device, when the tripping catch returns to its original position, it enters the tripping shaft through the small arcuate surface from the pin to which it pivots, making it smooth. Since the inertia during tripping is small, it has excellent effects such as quick activation time.

[Brief explanation of drawings]

FIG. 1 is a right side view showing an embodiment of the opening/closing device of the present invention in a standby state, FIG. 2 is a front view, FIG. 3 is a front view showing the main parts of FIG. 2, and FIG. Left side view, Figure 5 is a right side view, Figure 6 is a front view showing the spur gear in Figure 3, Figure 7 is a right side view, and Figure 8 is a left side view showing the main parts of Figure 2. , FIG. 9 is a right side view showing the trip catch of FIG. 1, FIG. 10 is a right side view showing the trip catch in the closed state, and FIG. 11 is a right side view showing the trip catch in the free state. DESCRIPTION OF SYMBOLS 1... Movable arm, 2... Frame, 3... Rotation axis, 4... First pin, 5... First link,
6...Second pin, 7...Second link, 8...
third pin, 10... third link, 11... fourth link, 12... pin, 13... trip catch, 13a... end of trip catch, 1
4...Fourth pin, 18,19...Free link,
21...Roller, 23...Inserting cam, 24...
Camshaft, 26... Link, 27... Closing spring, 28... Roller pin, 29... Shaft,
30... Closing catch, 32... Opening spring, 3
3...Roller clutch, 34...Manual handle,
35...Roller clutch, 36...Case, 36
a... Notch, 37... Display cam, 38... Spur gear, 39... Electric motor, 40... Spur gear, 41...
... Tripping shaft, 41a... Half-moon-shaped end, 42... Tripping coil, 43... Closing shaft, 44... Closing coil, 45... Engagement pin, 46, 47... Spring hanging pin , 48... Spring, 49... Indicator bar, 54... Position detection switch.

Claims (1)

[Claims] 1. One end of a movable arm is rotatably attached to a rotation shaft, the other end of this movable arm is connected to one end of a first link via a first pin, and the other end of the first link is connected to a first link. the other end of the second link is connected to one end of the third link via a third pin, and the other end of the third link is connected to one end of the second link via a second pin; is connected to one end of the free link, and a roller is attached to the other end of the free link,
This roller is engaged with the outer periphery of a charging cam attached to a camshaft, a roller pin is attached to the side surface of the charging cam, and this roller pin is pivoted to the shaft attached to the frame at the energy storage position of the charging cam. In the opening/closing operation device, the trip catch is pivoted to the outer circumferential surface of the end of the trip catch that is engaged with the half-moon-shaped end of the trip shaft. An opening/closing operation device characterized in that the opening/closing operation device has an arcuate surface whose center is eccentrically located closer to the tripping shaft than the tripping pin.