JPS63218112A - Operator for switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a switch operating device using an energy storage spring.

(Prior Art) Generally, some switches such as disconnectors use an operating device that utilizes the releasing force of a storage spring as driving force. Also,
The energy storage device for the driving force of the operating device has the configuration shown in FIG. 4. That is, a movable contact portion of a switch (not shown) is connected to a drive source such as a motor (not shown) via the main shaft 1.

A lever 2 is fixed to the main shaft 1, and this lever 2
A first sleeve 4 is connected to the other end via a pin 3. Further, a second sleeve 6 that is rotatable around the main shaft 5 is fitted opposite to the first sleeve 4 . Further, a main storage spring 7 is inserted between the first sleeve 4 and the second sleeve 6.

When the main shaft 1 is rotated clockwise by the driving source, the lever 2 is rotated clockwise about the main shaft 1. As a result, the main storage spring 7 is gradually compressed, and the lever 2. The main body is most compressed when the first sleeve 4 and the second sleeve 6 are in a straight line. Thereafter, the drive source and the main shaft 1 are separated, and the main shaft 1 is further rotated clockwise by the releasing force stored in the main storage spring 7. This causes the movable contact portion to operate, opening and closing the switch.

By the way, in the conventional operating device, as shown in FIG. 5, the initial output of the operating range of the main accumulating spring 7 from 1 to 100 mph is small, so the output of the operating device is low. especially,
When the switch is used infrequently, a larger operating force than usual is required in the single drive system of the switch and the operating device due to deterioration and stiffness of the lubricating grease. and,
The above-mentioned problem has become noticeable in switches used in cold regions.

Therefore, in order to increase the operating force of the operating device, the main energy storage spring 7
It is possible to replace it with something stronger.

However, in this case, the part VJ source is made stronger.

A large impact device is required to absorb the Wf impact generated at the end of the operation.

(Problems to be Solved by the Invention) As described above, in the conventional operating device, the main energy storage spring 7
Because the initial output torque in the operating range of the switch was small, the response of the switch's opening/closing operation was poor.

The present invention was made to eliminate the above problems, and
It is an object of the present invention to provide a switch operating device that can improve the switching operation response of the switch.

[Structure of the invention]

(Means for solving the problem) In order to achieve the above object, a main storage spring that constantly releases a releasing force when the first sleeve and the second sleeve move away from each other as the main shaft rotates; An auxiliary energy storage spring is provided that releases the releasing force only in the initial stage when the first sleeve and the second sleeve move away.6 (Function) With this configuration, the operating range can be increased without making the drive source more powerful. The initial output torque can be increased, and the switching operation response of the switch can be improved.

(Embodiment) A power storage device which is an embodiment of the present invention will be described below with reference to FIG. A lever 9 rotatable around the main shaft 8 is fixed to the main shaft 8 connected to a drive source. This lever 9
A first sleeve 11 is connected via a pin 10 so as to be relatively rotatable. This first sleeve 11
The connection part 11a rotatably connected to 0 and this connection part 1
18, a disc-shaped end plate 11b fixed to the side opposite to the pin 1o, and a cylindrical fitting part 11c fixed to the side opposite to the connection part 11a of the end plate 11b. and end plate], l
b and the fitting part 11c are arranged coaxially, and the end plate 1
The outer diameter of 1b is made larger than the outer diameter of fitting portion 11c. moreover,
A second sleeve 12 is arranged opposite the sleeve 11. The second sleeve 12 is rotatably connected to a support shaft 13 fixed at a predetermined distance from the main shaft 8 . The second sleeve 12 also includes a connecting portion 12a rotatably connected to the support shaft 13;
It includes a disc-shaped end plate 12b fixed to the side opposite to the support shaft 13 of the connecting part 12a, and a cylindrical fitting part 12c fixed to the side of the end plate 12b opposite to the connecting part 11a. and.

The end plate 12b and the fitting part 12c are arranged coaxially, and the outer diameter of the end plate 12b is larger than the outer diameter of the fitting part 12c.

Further, the end of the fitting portion 11c of the first sleeve is coaxially and slidably fitted within the end of the fitting portion 12c of the second sleeve.

In addition, on the outside of the fitting portion], 1c, 12c, an end plate 11 is provided.
Extrapolate the main storage spring 14 supported at both ends at b and 12b.

And, in the middle part of the fitting part 11c of the first sleeve,
A plurality of pins 15 protruding radially outward are fixed. When the fitting part 1]c is gradually fitted into the fitting part 12c, this pin 15 enters into a slit 12d provided in the axial direction at the end of the fitting part 12c. Also.

Outside the fitting part 11c and on the -1b side of the end plate of the pin 15, a donut-shaped presser plate 16 that is movable in the axial direction is inserted outside the fitting part 11c. Furthermore, between the fitting part 11c and the main storage spring 14, an end plate 11b and a presser plate 16 are provided.
Insert the auxiliary energy storage spring 17 whose both ends are supported at .

Next, the operation of the configuration of this embodiment will be explained.

When the drive source operates according to the switch operation command, the drive 1jJ
The main shaft 8 connected to i+a rotates clockwise.

At the same time, the lever 9 rotates clockwise about the main shaft 8. As a result, the distance between the pin 10 and the support shaft 13 gradually narrows, so the first sleeve 11 and the second sleeve 12 become relatively close to each other. That is, the fitting part lie gradually fits into the fitting part 12c, and both ends are connected to the end plate 11.
The main storage spring 14 supported by b and 12b is compressed and a release force is stored. At this time.

Since the sub-storage spring 17 is not compressed, no release force is stored.

Furthermore, as the rotation of the main shaft 8 progresses, the main storage spring 14 is further compressed. Then, as the fitting part 11c fully enters the fitting part 12c, the pin 15 moves into the slit 12.
Enter cl. On the other hand, since the holding plate 16 comes into contact with the end surface of the fitting portion 12c, the distance between the end plate 11b and the holding plate 16 gradually narrows. As a result, the sub-storage spring 17, whose both ends are supported by the end plate 11b and the presser plate 16, is compressed and a releasing force is stored.

And lever 9. When the first sleeve 11 and the second sleeve 12 are in a straight line, the main storage spring 14 and the sub storage spring 17 are most compressed.

Thereafter, the drive source and the main shaft 8 are separated, and the main shaft 8 and the movable contact portion are connected. Further, the main shaft 8 is rotated clockwise by the releasing force of the main energy storage spring 14 and the auxiliary energy storage spring 17. At this time, the distance between the pin 10 and the support shaft 13 gradually increases, so the first sleeve 11 and the second sleeve 12 move away from each other relatively. In addition, a sub-storage spring 17 supported by the presser plate 16 that is in contact with the end surface of the fitting portion 12c and the end plate 11b.
The output torque of is shown in FIG. That is, the output torque of the auxiliary energy storage spring 17, that is, the torque that rotates the main shaft 8, is the torque that rotates the main shaft 8.
2 becomes zero when it is in a straight line, and then increases and decreases as the lever 9 rotates and becomes zero. This means that at the beginning of rotation,
Although the sub-storage spring 17 is sufficiently compressed and has a large release force, the apparent length of the arm is extremely short.
Output torque is small. Although this later release force gradually decreases as the sub-storage spring 17 expands, the apparent length of the arm suddenly increases, so the output torque increases. Furthermore, as the sub-storage spring 17 expands, the releasing force decreases, so the output torque decreases, and the presser plate 16
When 2c separates, the output torque becomes zero. The main energy storage spring 14 can provide the same output torque as the conventional one.

The output torque resulting from the combination of the main energy storage spring 14 and the auxiliary energy storage spring 17 is shown by a solid line in FIG. Note that the broken line represents the output torque generated only by the main energy storage spring 14.

Furthermore, in FIGS. 2 and 3, the horizontal axis represents the output angle.

As shown in FIG. 3, in this embodiment, the output torque at the initial stage of the operation range can be increased. Therefore, the switching operation response of the switch is improved6, and even infrequently used switches used in cold regions can be operated satisfactorily.

Furthermore, in the latter half of the operating range, only the main storage spring 14 acts as in the conventional case, so no special shock absorbing device is required. Further, since the output torque obtained by combining the output torque of the auxiliary energy storage spring 17 is smaller than the maximum value of the output torque of the main energy storage spring 14 alone, there is no need to make the drive source powerful.

It should be noted that the present invention is not limited to the above-mentioned embodiment, but a fitting part 12c is provided inside the fitting part 11C, and the pin 15, the presser plate 16, and the sub-storage spring 17 are provided inside the fitting part 11c. May be placed. Further, the auxiliary energy storage spring 17 is provided inside the fitting part 12c so that it is compressed between the end plate 11b and the fitting part 11c when the first sleeve 11 and the second sleeve 12 approach each other. Good too.

〔Effect of the invention〕

As explained above, in the present invention, in addition to the conventional main energy storage spring, an auxiliary energy storage spring is provided that releases the releasing force only in the initial stage when the first sleeve and the second sleeve are moving away from each other. It is possible to provide a switch operating device that can increase the output torque and improve the operational response of the switch.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a power storage device of a switch operating device showing an embodiment of the present invention, FIG. 2 is a characteristic diagram of the output torque of the auxiliary power storage spring shown in FIG. 1, and FIG. Figure 4 is a sectional view of the energy storage device of the conventional switch operating device, and Figure 5 is the main storage spring shown in Figure 4. It is a characteristic diagram of the output torque of a force spring. 8...Main shaft, 9...Lever, 10...
Pin, 11...first sleeve, 11
a... Connection part, llb... End plate, 11c.
...Fitting part, 12...Second sleeve, 12
a... Connection part, 12b... End plate, 12c...
...Mating part, 12d...Slit, 13...
・Support shaft, 14... Main storage spring, 15...
Pin, 16... Presser plate, 17... Sub-storage spring. Agent Patent Attorney Nori Chika Ken Yudo Hirofumi Mitsumata / 4-・Taku Ikan 1-ine Dekata Ki and Fig. 2 □ However, 27 Hisatomo Fig. 3 C1 Fig. 1 → Tai etc. and Fig. 5

Claims (1)

[Claims] a main shaft connected to a drive source and a movable contact part of a switchgear;
A lever fixed to the main shaft, a support shaft fixed at a predetermined distance from the main shaft, a first sleeve rotatably connected to the lever via a pin, and a first sleeve rotatable to the support shaft. a second sleeve that is movably connected and coaxially and slidably fitted opposite the first sleeve; and the first sleeve and the second sleeve move away from each other as the main shaft rotates. A main storage spring that releases a releasing force at all times, and a sub-storage spring that releases a releasing force only in the initial period when the first sleeve and the second sleeve move away from each other as the main shaft rotates. Operation device for switch.