US 5,966,997 AGranted

Device for transmitting a linear motion with force limiter

AssigneeZF Luftfahrttechnik GmbH

InventorsChristian Halm, Manfred Fischer, Bernard Hunold

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Abstract

A device for transmitting linear motion for adjustment of a wing element (4) is provided with one input part (23) and one output part (26) wherein between the input part (23) and the output part (26) an uncoupling mechanism is provided which, above a preset force (release force) makes relative motion between the input part and the output part possible. One or more prestressed springs (42), which can absorb energy during relative motion, upon unloading, restores the input and output parts to an initial position. A translation mechanism converts the relative motion between the input part (23) and the output part (26). The converted motion acts upon the spring (42) whereby a force-path characteristic line of the device, corresponding to the translation mechanism, can be obtained. The translation mechanism consists of a crankshaft (52) with cam discs (50A, 50B) driven by a connecting rod (46) which act upon a piston (48) longitudinally movable within the housing (30) and prestressed by springs (42).

Claims12

Dependent claims

A device for transmitting linear motion for adjustment of a wing element of an aircraft, the device for transmitting linear motion comprising;

an input part (23) being coupled to an output part (26);
a coupling mechanism being provided between said input part (23) and said output part (26), and the coupling mechanism facilitating, above a preset release force threshold, relative linear motion between said input part (23) and said output part (26) to at least partially absorb an excess force applied to said device for transmitting linear motion, and the coupling mechanism comprising:
at least one prestressed spring (42) being provided between said input part (23) and said output part (26) for absorbing energy during relative linear motion between said input part (23) and said output part (26) and, upon discontinuation of the excess applied force, restoring said input part (23) and said output part (26) back to initial spaced positions;
and
a connecting rod (46) interconnecting said input part (23) with said output part (26) for transmitting force therebetween;
and
a crankshaft (52) eccentrically engaging with one end of the connecting rod (46), and the crankshaft (52) inducing a converting motion which converts the relative linear motion between said input part (23) and said output part (26) into rotary motion;
wherein the converting motion is conveyed to said at least one prestressed spring (42) as a force-path characteristic line of said device for transmitting linear motion.

5 more elements

A device for transmitting linear motion for the adjustment of a wing element of an aircraft, the device for transmitting linear motion comprising;

an input part (23) being coupled to an output part (26);
a coupling mechanism being provided between said input part (23) and said output part (26), and the coupling mechanism facilitating, above a preset release force threshold, relative linear motion between said input part (23) and said output part (26) to at least partially absorb an excess force applied to said device for transmitting linear motion:
at least one prestressed spring (42) being provided between said input part (23) and said output part (26) for absorbing energy during relative linear motion between said input part (23) and said output part (26) and, upon discontinuation of the excess applied force, restoring said input part (23) and said output part (26) back to initial spaced positions;
and
a translation mechanism (46, 52, 50A, 50B, 48) being coupled between said input part (23) and said output part (26) for converting the relative linear motion, between said input part (23) and said output part (26), into a converted motion acting upon said at least one prestressed spring (42) whereby a force-path characteristic line of said device for transmitting linear motion, corresponding to said translation mechanism (46, 52, 50A, 50B, 48), is achieved.

2 more elements

Dependencies are inferred from the claim text.