| 摘要 |
<p>1,203,860. Clutch-brake combinations. GEOG FISCHER AG. BRUGG. 3 Dec., 1968 [4 Dec., 1967], No. 57423/68. Headings F2L and F2U. A clutch-brake combination has a rigid driven disc 12 axially shiftable to selectively frictionally engage a driving flywheel 16 or a stationary brake ring 17. The disc 12 is connected to an axially fixed driven shaft 7 both by way of a hub 11 fast with an axially slidable pin 10 having a pin-and-slot connection 8 with the shaft 7 and by way of a torque transmitting spring means 19, which may be a diaphragm spring or spring spokes, and which is clamped to the disc 12 between rings 18, 20 and is secured to the shaft 7 by a clamping ring 22. The spring means 19 may be of steel or of a plastics material. The disc 12 is connected to the hub 11 by screws 15 and rubber discs which function as oscillation dampers and also compensate for slight obliquity of the disc 12 relative to the flywheel or the brake ring. The friction disc 12 is shiftable axially by yoke arms 2 having pins 5 engaging a bush 4 which is fast axially with the pin 10. The yoke arms 2 are pivotally connected to a support 25 by pins 3, the support being biased by compression springs 24 (which are provided for regulating and adjusting the clutching pressure) and the yoke arms being pivoted anti-clockwise about the pins 3 by a braking spring 28. Normally the spring 28 causes the friction disc to engage the brake ring 17. On actuating the yoke (by mechanical, pneumatic or electric means not disclosed) the yoke arms pivot about the pins 3 to engage a clutch until the pressure of the springs 24 is overcome, whereupon the support 25 is displaced to release a feeler causing a device (not shown) to retain the yoke in its clutching position.</p> |
