JPS642347Y2 - - Google Patents

Description

[Detailed description of the invention] This invention fits the serrated rotating shaft of the operating device body into the serrated shaft hole of the operating lever, and transmits operating force to the switch via the operating lever. The present invention relates to an operating device for a switch, and an object of the present invention is to facilitate attachment and detachment of an operating lever to a rotating shaft.

In general, a switch operating device is configured as shown in FIG. At the same time, an operating rod 5 connected to the operating lever on the switch side is connected to the tip of the operating lever 3 by a connecting pin 6. When the rotary shaft 2 is rotated by a predetermined angle by the shaft rotation mechanism using the motor, air, etc. of the operating device main body 1, this rotational force is transferred to the switch main body via the operating lever 3, the operating rod 5, and the operating lever on the switch side. The signal is transmitted to the switch to open and close the switch.

By the way, in this type of operating device, the outer peripheral surface of the rotating shaft 2 of the operating device main body 1 is serrated, and as shown in FIG. 2, the shaft hole of the operating lever 3 into which the rotating shaft 2 fits is The inner peripheral surface of 7 is also serrated, and by fitting these together, the direction of movement of the operating rod 5 can be set arbitrarily depending on the positional relationship between the operating device body 1 and the switch main body. ing.

Furthermore, this type of operating lever 3 has a
Shaft holes 7 are provided in the longitudinal direction passing through the center line on the left and right sides of the
A cut groove 8 is formed in communication with the operating lever 3, and an insertion hole 9 for the bolt 4 and a threaded hole 10 are formed in the vertical direction on the left and right sides of the center of the operating lever 3, respectively, as shown in FIG. 3 shaft hole 7
After fitting the rotating shaft 2 to the screw holes 9, the bolts 4 are passed through the respective insertion holes 9 and screwed into the screw holes 10.
By tightening the bolts 4 on the upper and lower sides and contracting the groove width of both grooves 8, the rotating shaft 2 is fitted into the shaft hole 7, and the operating lever 3 is integrally connected to the rotating shaft 2. It is something. In addition, in Figure 2, 1
Reference numeral 1 designates pin holes formed at both ends of the operating lever 3.

In this way, the rotating shaft 2 and operating lever 3 have a precise fitting structure using serration processing, so it is necessary to assemble them more carefully than with a normal pin connection.
When reassembling the lever after separating it for maintenance and inspection, the tightening of the bolt 4 will cause a slight distortion in the operating lever 3, causing the shaft hole 7 to change from a perfect circle to an ellipse that is elongated in the longitudinal direction of the lever 3. , the circumferential edge of the shaft hole 7 on the small diameter side is pressed against the rotating shaft 2, and the rotating shaft 2
There is an inconvenience that it becomes very difficult to attach and detach the operating lever 3 from the holder.

When the operating lever 3 is to be corrected once it has been distorted, the bolt 4 is usually corrected as shown in FIG.
After removing the lever, wedges 12 are driven into both grooves 8 of the operating lever 3, and the operating lever 3 is expanded in the width direction. However, in this case as well, since the shaft hole 7 of the operating lever 3 is deformed into a long ellipse in the direction perpendicular to the longitudinal direction, the periphery of the shaft hole 7 on the small diameter side, that is, the intersection corner of the shaft hole 7 and the kerf 8 is in pressure contact with the rotary shaft 2, making it impossible to easily attach and detach the operating lever 3 to the rotary shaft 2, and furthermore, there is a risk that the intersecting corner portions may bite into the serration projections of the rotary shaft 2, causing damage to the projections. For this reason,
By driving in the wedge 12, the operating lever 3 is widened in the width direction, or conversely, by tightening the bolt 4, the operating lever 3 is tightened in the width direction, so that the shaft hole 7 is restored to a perfect circle, and the rotating shaft 2 and shaft hole are 7, it is necessary to carefully repeat the adjustment to the extent that sufficient fitting accuracy can be ensured, which is an extremely difficult task.

This invention was made with the above points in mind, and includes serrating the rotating shaft of the operating device body, serrating the shaft hole in the center of the horizontally elongated plate-shaped operating lever, and Left and right grooves communicating with the shaft hole are formed on the left and right sides of the shaft hole of the operating lever, and the rotating shaft is inserted into the shaft hole, and the upper and lower grooves of the lever are formed. A switch in which the sides of the switch are tightened with bolts to contract the width of the grooves, the rotating shaft is fitted into the shaft hole, and the rotation of the rotating shaft is transmitted to the switch via the operating lever. The present invention provides an operating device for a switch in which a corner portion where the shaft hole of the operating lever intersects with the cut grooves is omitted.

Therefore, according to the switch operating device of this invention, when the rotating shaft and the operating lever are separated for maintenance and inspection and then reassembled, both grooves whose groove width has contracted due to the tightening of the bolts are removed. Even if the groove width is widened by driving a wedge, etc., the intersection corner between the shaft hole of the operating lever and both grooves is missing, so there is no place where the rotating shaft comes into pressure contact with the shaft hole, and the operating lever does not touch the rotating shaft. can be easily and smoothly attached and detached, there is no fear of damage to the serration protrusions on the rotating shaft, and the conventional drawbacks can be overcome by a simple chipping process.

Next, this invention will be described in the fifth section showing one embodiment of the invention.
The figure will be explained in detail.

In FIG. 5, the same symbols as above indicate the same parts, and the difference is that it is formed at the center of the operating lever 3, has a serration process on the inner circumferential surface, and is fitted onto the rotating shaft 2 of the operating device body 1. The point is that the intersecting corners 13 between the mating shaft hole 7 and both kerf grooves 8 formed in the longitudinal direction of the operating lever 3 to communicate with the shaft hole 7 are cut out to form a cutout portion 14.

Therefore, according to the embodiment, in this type of operating device in which the operating lever 3 is integrally connected to the rotating shaft 2 of the operating device main body 1 by tightening the bolt 4, the rotating shaft 2 and the operating lever are connected for maintenance and inspection. 3
When reassembling after separating the
By driving wedges 12 into both kerfs 8 of the operating lever 3 after removing the lever 3 to widen the groove width, even if the shaft hole 7 is deformed into an elongated ellipse in the vertical direction, the shaft hole 7
Since the intersection corner 13 between the kerf 8 and the kerf 8 is omitted, there is no place in the shaft hole 7 that is pressed against the rotating shaft 2, and the operation lever 3 can be easily and smoothly attached to and removed from the rotating shaft 2. It can eliminate the shortcomings.

[Brief explanation of the drawing]

Fig. 1 is a front view of a general switch operating device, Figs. 2 to 4 show a part of the operating lever in the conventional switch operating device, and Fig. 2 a and b
3 is a front view when connected to a rotating shaft, FIG. 4 is a front view when the kerf is deformed in a direction to widen the groove width, and FIG. 5 is a switch of this invention. FIG. 2 is a front view of essential parts of one embodiment of the operating device of FIG. DESCRIPTION OF SYMBOLS 1... Operating device main body, 2... Rotating shaft, 3... Operating lever, 4... Bolt, 7... Shaft hole, 8... Cut groove, 13... Intersecting corner, 14... Missing part.

Claims (1)

[Claims for Utility Model Registration] The rotating shaft of the operating device body is serrated, and the shaft hole in the center of a horizontally elongated plate-shaped operating lever is serrated, and the left side of the shaft hole of the operating lever is , a left-right groove is formed on the right side that communicates with the shaft hole, and the rotating shaft is inserted into the shaft hole, and the upper and lower sides of the both grooves of the lever are tightened with bolts. In the operating device for a switch, the width of the groove is contracted, the rotating shaft is fitted into the shaft hole, and the rotation of the rotating shaft is transmitted to the switch via the operating lever, comprising: An operating device for a switch in which a corner portion where a shaft hole intersects with both of the kerf grooves is missing.