Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1997-07-14
1998-07-07
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Linear
310 17, 310 20, H02K 3302, H02K 4100
Patent
active
057774048
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1) Field of the Invention
The invention relates to an actuator for displacing a movable pin between two end positions, at least one of which two end positions is a stop, comprising an energy buffer, components mutually connecting the energy buffer and the movable pin, a mass capable of storing energy of the energy buffer as kinetic energy, wherein at the end of the displacement in at least one direction the kinetic energy of the mass is stored again in an energy buffer, locking means which block the actuator in at least one extreme position when the remaining kinetic energy has been wholly or almost wholly generated to the energy buffer, and means with which at the end of the movement cycle the lost energy can be supplied to for instance a locking, switch or press or hammer device for instance for compacting, deforming, reinforcing and/or ejecting material.
2) Background Information
Such an actuator is known for instance from EP-B-0 107 881.
An object of the invention is to arrive at an inexpensive and compact actuator which, irrespective of the direction of the gravitational force and irrespective of the presence of external energy sources such as a mains electricity supply or for instance an external accumulator battery, is capable of actuating the movable pin time and again in the correct manner and of realizing the required pressure between movable pin and the stop.
The invention furthermore has for its object to be used for the purpose of rotating as well as non-rotating pins.
The invention moreover has for its object to be used on actuators wherein the distance between the two end positions is not fixed precisely as a consequence of wear or inaccurate production processes or because the stop is not defined at all due to the nature of the application, for instance the use for machining material wherein the actuator forms part of an apparatus which is held at an imprecise distance from the material for working.
SUMMARY OF THE INVENTION
These objectives are generally realized by an actuator which has the feature that between the energy buffer and the movable pin are situated at least two rotating components, i.e. an actuating element which drives the movable pin between two end positions, whereof the distance between the end positions in relation to each other is not necessarily determined, and a mass which moves along partly parallel with the actuating element, wherein kinetic energy is stored in the mass at the beginning and over only a part of the movement, on the basis of which kinetic energy the movement of the rotating components can be completed without other energy sources having to be applied for this purpose, and whereof at the end of the movement the mass can rotate further relative to the actuating element, wherein the remaining kinetic energy of the mass is relinquished to the energy buffer.
The device comprises an actuator which displaces one (or more) pin(s) which may or may not be rotatably movable and which must be moved through a certain, not necessarily defined, distance or angle from the one end position to the other and back again, pin is held fixedly in both or in one of the end positions by the locking forming part of the actuator and can be released again as required, pressure on its stop, and the form of potential energy in at least one of the end positions, the displacement, wherein potential energy is converted into kinetic energy which is in turn stored in the mass forming part of the actuator, converted into potential energy and vice versa, and of the movement are able to supply the lost energy in the form of potential energy to the energy buffer, independent of the gravitational force and wherein with comparatively simple locking means a precise locking of the pin is possible as close as possible to the point where all kinetic energy is stored as potential energy.
The invention is based on a favourable energy management and compact construction, whereby using known and compact forms of energy storage in the actuator or as component of the dev
Jones Judson H.
Stephan Steven L.
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