JPH031856Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to an operating device for operating equipment such as a switch.

B. Summary of the invention The present invention is an operating device for operating equipment such as a switch, in which an operating handle is provided at one end of a shaft in a manner that can be freely engaged and detached, an operated part is connected to the other end, and a movable handle is attached to a threaded part of the shaft. The pieces are screwed together, and the cam rotates in the middle section of the movement of this movable piece, and the rotation of this cam is transmitted to the interlock pin via the rod and conversion piece, and the interlock pin engages with the circumferential groove of the operating handle. This prevents the operating handle from falling off during operation.

C. Prior Art FIGS. 6 to 9 show a case where the operating device is used as a disconnector of a power distribution board.

In the operating device 5, a base 16 is fixed to the housing 1, and a bearing 46 is provided on the base 16.

The rotating plate 47 is rotatably provided on the base 16 with its shaft 48 inserted into the bearing 46 . Further, the rotary plate 47 is provided with an operating rod holder 50 into which the operating rod 49 is inserted, and a hole 52 into which one end of the connecting crank 51 is attached, so that the operating force is transmitted from the rotating plate 47 to the connecting crank 51. The signal is transmitted via the crank 51 and the insulating lever 32 to the disconnector 4, which is the operated section.

D Problems to be solved by the invention However, the operating rod 49 is simply an operating rod holder 50.
Since it is only inserted into the device, there is a risk that it may fall out during operation.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an operating device for equipment that prevents the operating handle from falling off during operation.

E. Means for Solving the Problems Therefore, the configuration of the present invention to achieve this objective is to rotate the shaft described below, to be detachably attached to the shaft, and to have a structure on the outer periphery. an operating handle provided with a circumferential groove; a shaft having one end engaged with the operating handle and the other end connected to an operated part and provided with a threaded portion on its outer periphery; and a shaft threadedly engaged with the threaded portion of the shaft. A movable piece that moves linearly due to the rotation of the shaft, a cam that is pressed and rotated by the movable piece in the middle section of the movement of the moving piece, and one end of which is pivotally supported by this cam, converting the circular movement of the cam into a linear movement. a connecting rod that changes the direction of the connecting rod; a converting piece that is connected to the other end of the connecting rod and changes the direction of the linear motion of the connecting rod; and a converting piece that is connected to the converting piece and engages with the circumferential groove of the operating handle when the cam rotates. and an interlock pin biased by a spring in the direction opposite to the circumferential groove.

F Effect Therefore, when the operating handle is engaged with one end of the shaft and rotated, the operating force is transmitted from the other end of the shaft to the operated part. On the other hand, due to the rotation of this shaft, the movable piece moves and comes into contact with the cam, and the movement of this movable piece rotates the cam, and this rotational force is transmitted in this order to the connecting rod, conversion piece, and interlock pin. It moves against the spring and engages with the circumferential groove of the operating handle. Further, as the movable piece moves further, the movable piece loses contact with the cam, and the pressing force is no longer transmitted to the cam. Then, the interlock pin is returned to its original position by the restoring force of the spring and is disengaged from the operating handle.

G. Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

An embodiment of the present invention is shown in FIGS. 1 to 5, and in this embodiment, the device to be operated is a disconnector of a power distribution board.

In FIG. 1, a door 2 is attached to a casing 1, and inside this casing 1 there is a shield and a disconnector 3,
A disconnector 4 and the like are housed, and the disconnector 4 is operated by an operating device 5.

The operating device 5 is shown in detail in FIGS. 2 and 3, and the operating handle 6 has an insertion hole 9 at the tip of a cylindrical portion 7 into which a shaft 8 described below is inserted, and an engagement groove 10. It is constructed so that it can be freely engaged with and detached from the shaft 8. A circumferential groove 11 is formed on the outer periphery of the cylindrical portion 7, and
A grip part 13 is provided at the rear end of the columnar part 7 via an arm part 12.

The shaft holding fitting 15 is attached to a base 16 fixed to the housing 1. Shaft insertion holes 17, 17 are formed in this shaft holding fitting 15, and the shaft 8 is inserted through these shaft insertion holes 17, 17.

A bush 18 and a fixing fitting 19 are inserted into the shaft 8 from both ends, and a fixing pin 20 is inserted into a hole formed in the fixing fitting 19 and the shaft 8 to prevent movement of the shaft 8 in the thrust direction. There is.

Further, the shaft 8 has an engaging pin 21 on one end side, which is engaged with the operating handle 6 to transmit the rotational force of the operating handle 6, and has an engaging pin 21 on the other end side which is an operated part by the means described below. A disconnector 4 is connected.

That is, the other end of the shaft 8 is inserted into an end insertion hole 24 of the operating rod 23 and is fixed with a fixing pin 25, and a threaded portion 26 is provided on the outer periphery of the operating rod 23.

The nut 27 is screwed into the threaded portion 26 and moves linearly by rotation of the operating rod 23, and pins 28 are provided on both sides of the nut 27.

The conversion piece 29 has a dogleg shape and has a bearing 30 at the center.
The nut 2 is rotatably supported on one end side.
A long hole 31 into which the pin 28 of No. 7 is inserted is formed, and the other end is pivotally supported by an insulating lever 32.

The insulating lever 32 has one end pivotally supported by the conversion piece 29 and the other end connected to the disconnector 4 as described above.

On the other hand, a threaded portion 33 is formed on the outer periphery of the intermediate portion of the shaft 8, and a movable piece 34 is attached to this threaded portion 33.
are screwed together.

The movable piece 34 consists of a nut part 35 having a thread cut on the periphery of the hole and a slide pin part 37 projecting from the guide hole 36 of the shaft holding fitting 15, and moves linearly as the shaft 8 rotates.

The cam 38 is rotatably provided with a shaft 40 inserted into a bearing 39, and is rotated by being pressed by the slide pin portion 37 of the movable piece 34 in an intermediate section of movement of the movable piece 34.

The connecting rod 41 has one end pivotally supported by the cam 38 and the other end pivotally supported by the conversion piece 42, and converts the rotational motion of the cam 38 into linear motion.

The conversion piece 42 has a dogleg shape and is rotatably provided near the center, and one end is connected to the connecting rod 4 as described above.
1 and the other end is pivotally supported by an interlock pin 43, which changes the direction of linear movement of the connecting rod 41.

The interlock pin 43 is biased by a spring 44 in a direction opposite to the circumferential groove 11 of the operating handle 6, and engages with the circumferential groove 11 of the operating handle 6 when the cam 38 rotates.

Hereinafter, the operation of the above structure will be described. The door 2 is opened, the operating handle 6 is engaged with one end of the shaft 8, and the operating handle 6 is rotated. Then,
The operating rod 23 rotates together with the shaft 8, and the nut 27 moves in the direction of the arrow in FIG. 2. This movement is transmitted to the insulating lever 32 via the conversion piece 29, and the disconnector 4 is opened.

On the other hand, due to the rotation of the shaft 8, the movable piece 3
4 moves in the direction of the arrow in FIG. By moving this movable piece 34, the fourth
As shown in the figure, the cam 38 rotates, and this rotational force is transmitted to the connecting rod 41, the conversion piece 42, and the interlock pin 43 in this order.
3 moves against the spring 44 and engages with the circumferential groove 11 of the operating handle 6. As the movable top 34 moves further, the movable top 34 moves as shown in FIG.
The contact with the cam 38 is removed, the pressing force is no longer transmitted to the cam 38, and the interlock pin 43 is returned to its original position by the restoring force of the spring 44, and is disengaged from the operating handle 6.

In the above embodiment, since the operating force from the operating handle 6 is transmitted at a reduced speed by the threaded portion 26 and the nut 27, a large load is not applied to the operating device 5 and there is no need to design it to be structurally strong.

H. Effects of the invention As described above, according to the invention, an operating handle is detachably provided at one end of the shaft, and the interlock pin is operated during the intermediate section of movement of the movable piece that is screwed into the threaded portion of the shaft. Since it is configured to engage with the circumferential groove of the handle, it is effective in preventing the operating handle from falling off during operation.

[Brief explanation of drawings]

Embodiments of the present invention are shown in FIGS. 1 to 5, in which FIG. 1 is a configuration diagram of a switchboard, FIG. 2 is a front view of the operating device, FIG. 3 is a side view of the operating device, and FIG. FIG. 5 is a partially omitted front view of the operating device to show the operating state of the operating device, and FIG.
A conventional example of the present invention is shown in the figures, with Fig. 6 being a configuration diagram of the switchboard, Fig. 7 being a front view of the operating device, and Fig. 8 being a front view of the operating device.
The figure is a side view of the operating device. 5... Operating device, 6... Operating handle, 8...
Shaft, 11... Circumferential groove, 26, 33... Threaded portion, 34... Movable piece, 38... Cam, 41...
Connected rod, 29, 42... Conversion piece, 43...
Interlock pin, 44...spring.

Claims (1)

[Claims for Utility Model Registration] An operation handle that rotates the shaft described below and is detachably attached to the shaft and has a circumferential groove on its outer periphery, and one end engages with the operation handle. a shaft whose other end is connected to an operated part and has a threaded portion on its outer periphery; a movable piece that is screwed into the threaded portion of the shaft and moves linearly by rotation of the shaft; A cam that is pressed and rotated by this movable piece in the intermediate section of movement, a connecting rod that is pivoted at one end of the cam and converts the circular motion of the cam into linear motion, and a connecting rod that is connected to the other end of the connecting rod. a conversion piece that changes the direction of the linear motion of the cam; and a conversion piece that is connected to the conversion piece, engages with a circumferential groove of the operating handle when the cam rotates, and is biased by a spring in a direction opposite to the circumferential groove. An operating device for equipment, characterized in that it consists of an interlock pin.