KR950008805B1 - Auto clutch - Google Patents

Abstract

The clutch device for protecting the overspeed rotation, automatically intermits the driving power from the motor when the power generating motor is rotating over the setting RPM. The device comprises a housing(30) having an opening on a side and fixed on a driver shaft(20), an intermitting section(40) elastically surported by the spring(430) on the inner wall of the housing(30) for compressing the drive shaft(11) of the power device(10); intermittent pad(420) detachable from the main shaft(11) by the RPM of the power device(10). When the overload is input to the loading gear having the differential clutch, a check ball is inserted to a hole of the gear after pushing the spring.

Description

Power automatic control device

1 is a partial perspective view of the present invention

2 is a longitudinal cross-sectional view of the present invention.

3 is a plan sectional view of the present invention, (a) is a state diagram when the rotation is less than the set speed, (b) is a state diagram when the rotation is more than the set speed.

* Explanation of symbols for main parts of the drawings

11: main shaft 20: driven shaft

30 housing 40 intermittent member

410: guide rod 420: intermittent pad

430: spring

The present invention relates to a power automatic control device, and in particular, it is possible to automatically control the driving force when the power generating device rotates at a set speed or more.

It is a feature of the present invention to intermittently prevent the rotational force from being transmitted to the rotational shaft on the load side when the rotational speed of the power generator is overspeed.

Conventionally, there is a device using a clutch as a means for controlling power, which is to forcibly decelerate the rotational force transmitted to the driven shaft by forcibly decelerating the rotational force of the driven shaft. There is a problem that imposes a force on the device, and is transmitted or interrupted by any means, for example, artificially automatic clutch, regardless of the number of revolutions, and the driving force transmitted to the driven shaft when the power unit rotates above the set number of revolutions. There was a problem that could not be controlled automatically.

Japanese Utility Model Publication No. Hei 5-14654 has been proposed as another control of the rotational speed, and the feature of this device is the opposite concept of the present invention. To protect the differential clutch.

That is, a plurality of intervening holes are formed on the outer circumference of the rotating shaft at predetermined intervals, and a plurality of holes are formed in the outer periphery of the rotating shaft of the output gear to engage the check bull in the intervening holes and to include a spring for pressing the check ball. When the rotating shaft is rotated by the power unit and the output gear is overloaded when the output gear with the differential clutch is rotated, the check ball will rise above the spring and idle the power unit and its rotating shaft when the load is overloaded. It is.

Such a power train operates regardless of the rotational speed of the power plant. Even though the rotational speed of the power plant is high, the power unit has a problem of continuing to overspeed in a state in which an overload is not applied. There is a problem that can cause another safety accident.

The present invention has been proposed to solve the problems as described above, and its object is to protect the load side by preventing the over-rotation from being transmitted to the load side when the power unit is rotated too fast.

The object according to the present invention is that, when an overload is input to the gear on the load side with a differential clutch, the check ball is inserted into the hole of the gear to overcome the spring, the housing which is open to one of the driven shaft 20 ( 30 to fix the main shaft (11) of the power unit (10) by pressing a plurality of intermittent members (40) shot by the spring 430 inside the housing (30) to the power unit (10) According to the rotational speed of the control pad 420 is achieved by a power automatic control device, characterized in that detachable from the main shaft (11).

According to the present invention, the housing is integrally fixed to the driven shaft, and then the plurality of intermittent members are elastically installed at regular intervals on the inner circumferential surface of the housing so as to face each other in the direction of the center. When the main shaft is rotated, each intermittent member is connected to the main shaft to transmit power. When the main shaft is rotated more than the set speed, the intermittent member is separated from the main shaft by the centrifugal force to automatically control the driving force.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 are one embodiment of the present invention, the tubular housing 30, one side of which is open, is integrally fixed to the driven shaft 20, and a plurality of intervals are formed on the inner circumferential surface of the housing 30 at regular intervals. Two intermittent members 40 are elastically installed by the spring 430 toward the center of each other.

When the main shaft 11 of the power unit 10 rotates at a stop or below the set rotation speed, each intermittent member 40 is connected to the main shaft 11 by the elastic force of the spring 430, and In the case of rotating more than the number of revolutions by the centrifugal force intermittent member 40 beats the spring 430 and is separated from the main shaft 11 to automatically control the driving force.

On the inner circumferential surface of the housing 30 are installed a plurality of guide rods 410 at regular intervals to face each other in the center direction, the inner surface is formed of the intermittent pad 420 and the spring formed with the same curved surface as the outer circumferential surface of the main shaft (11) 430 is inserted into the guide rods 410, respectively, but the intermittent pads 420 are slid so that when the main shaft 11 of the power unit 10 is rotated below a set number of revolutions of the spring 430 The intermittent pad 420 is connected to the drive shaft 11 by the repulsive force to transmit the driving force of the main shaft 11 to the driven shaft 20, and when the rotation speed is higher than the set speed, the intermittent pad 420 by centrifugal force. ) Is separated outward while winning the spring 430 to automatically control the driving force.

The guide rods 410 slide only in the axially perpendicular direction when the intermittent pads 430 are inserted and slidably slipped, and the squares correspond to the outer circumferential surface of the guide rods 410 and the inner circumferential surface of the intermittent pads 430 so as not to rotate. It is preferable to form a rod, a + -shaped rod, a serration rod, or the like.

The intermittent pad 430 has a weight enough to compress the spring 430 by the centrifugal force and its own weight when rotated above the set number of revolutions, and the inner surface to increase the friction force with the outer peripheral surface on the main shaft (11) If the friction material is coated on it, it will be adhered without slipping during adhesion. The friction material may be any material as long as the material can increase the frictional force, for example, a material or leather used for the brake may be used. Also, the friction material generates some frictional heat during the friction of the friction material, but the housing is perforated. Therefore, it is cooled by air cooling method.

The main shaft 11 may be formed integrally by forming a large outer peripheral surface of the upper end in order to increase the contact area or by inserting a connecting rod of a large outer diameter into the main shaft 11.

The operation relationship of the embodiment according to the present invention configured as described above will be described.

In normal or continuous rotation, the intermittent pads 420 are adhered to the main shaft 11 by the elasticity of the spring 430 as shown in FIG. The power of 11 is transmitted to the driven shaft 20.

However, when the power unit 10 rotates at a high speed to rotate the main shaft 11 at a set speed or more, the intermittent pad 11 is rotated in contact with the intermittent pad 420 despite the elasticity of the spring 430. As shown in (b) of FIG. 3, the spring 430 is overcome by the centrifugal force and its own weight and pushed (retracted) toward the inner circumferential surface side of the housing 30.

That is, when the rotation speed of the main shaft 11 is less than or equal to the set rotation speed, the intermittent pad 420 is continuously connected to the main shaft 11 so that the resilience force of the spring 430 is stronger than that of the intermittent pad 420 and the centrifugal force. When the power is transmitted in a state where it is in a state of being rotated at a speed higher than the set rotation speed, the self-weight and centrifugal force of the intermittent pad 420 act more strongly than the spring force of the spring 430, thus compressing the spring 430 while being radial Since the retreat in the direction to move to the inner circumferential surface of the housing 30, the intermittent pad 420 is separated from the main shaft 11 to automatically block the transmission of power.

Therefore, when the driven shaft 20 is interrupted by the load and falls below the set number of revolutions, the spring 430 described above acts to push the intermittent pad 420 forward to bring the driven shaft 11 into contact with the main shaft 11. Power 20 is transmitted again, and if the driven shaft 20 is rotated more than the number of revolutions set by the main shaft 11 is interrupted as described above, so the driven shaft by repeating the transmission and interruption of power It is to perform the function of the power automatic control device to prevent the rotation of the 20 at overspeed.

In addition, the friction material coated on the inner surface of the intermittent pad 420 causes wear to occur due to friction, thereby making it easy to solidify from time to time.

As described above, the present invention can achieve a desired object by applying a mechanical device or the like for maintaining a constant rotation speed without overheating.

Claims (3)

When the overload is input to the gear on the load side with the differential clutch, the check ball is to be inserted into the hole of the gear to overcome the spring, so that the housing 30 is generally opened to the driven shaft 20 and the housing ( A plurality of intermittent members 40, which are shot with springs 430, are installed inside the 30 to compress the main shaft 11 of the power unit 10, depending on the rotation speed of the power unit 10. Power control device, characterized in that 420 is detachable from the main shaft (11). The method of claim 1, wherein the plurality of guide rods 410 are fixed to the inner circumferential surface of the housing 30 in the center direction, and the intermittent members 40 are slidably inserted through the springs 430 through the guide rods 410. Power automatic control device, characterized in that. 3. The automatic power control device according to claim 2, wherein a friction material is coated on an inner surface of the control pad (420).