Resilient driving connections
AssigneeS.R.M. Hydromekanik Aktiebolag
InventorKarl Gustav Ahlen
Life of this patent
Estimating the term…
Abstract
A rotatable driving connection in which a plurality of abutments on one rotating part engage corresponding generally radial slots on the other rotating part with resilient material between each abutment and the contacting surfaces of its respective slot. The abutments are arranged in pairs of groups, the resultant of the forces of one group being perpendicular to the resultant of the other group. A leaf spring may be associated with each abutment to maintain contact between the resilient material and the walls of the slot and to prevent backlash. The area of contact between the resilient material and the walls of the slot varies in relation to the force transmitted by the connection.
Claims27
A resilient driving connection rotatably drivingly connecting a driving part and a driven part, comprising:
- a plurality of drive units spaced about the axis of rotation of the parts, each unit comprising a drive member rigid with the driving part and a driven member rigid with the driven part, first opposed surfaces on the driving and driven members through which drive normally occurs, second opposed surfaces on the driving and driven members substantially free of driving forces during normal drive, but through which force is transmitted upon braking wherein the driven member drives the driving member, both pairs of opposed surfaces extending in planes which are radial or parallel to radial planes so that the driving and driven members can move radially relative to each other to correct for misalignment between the driving and driven parts,
- first resilient means interposed between the first opposed surfaces, said first resilient means having means for absorbing energy and becoming stiffer as the driving load increases, such that the resonant frequency thereof increases sufficiently rapidly with increased load that it stays above the actual frequency of vibration of the resilient means during normal operation thereof, and second resilient means interposed between the second opposed surfaces, said second resilient means having a stiffness less than that of the first resilient means so as to permit relative movement of both pairs of opposed surfaces for correcting for misalignment, but sufficiently stiff to maintain contact between the second opposed surfaces during substantially all normal driving conditions.
A resilient driving connection rotatably drivingly connecting a driving part and a driven part, comprising, a plurality of abutments projecting axially from one part into slots on the other part, which slots extend radially a greater distance than their respective abutments so that the abutments are movable radially within their respective slots to adjust for axial misalignment between the axes of the driving and driven parts, resilient means positioned between each side of each abutment and the facing side of the slot, said resilient means on both sides of each abutment engaging their respective sides of the slot in the absence of the force transmission, the resilient means on the side of each abutment which is normally the drive side comprising means for increasing its stiffness as force transmission through the connection increases so as to increase the resonant frequency of that resilient means such that it stays above the actual frequency of the vibrations thereat, and wherein the resilient means on the other side of that abutment has a stiffness less than that of the first said resilient means but sufficient to maintain the abutment and slot into contact during normal driving.
Dependencies are inferred from the claim text.