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1. WO2020201164 - LINEAR ACTUATOR COMPRISING A SHAPE MEMORY ALLOY COIL SPRING OPERATING AT LOW ELECTRICAL POWER

Publication Number WO/2020/201164
Publication Date 08.10.2020
International Application No. PCT/EP2020/058864
International Filing Date 27.03.2020
IPC
F03G 7/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
GSPRING, WEIGHT, INERTIA, OR LIKE MOTORS; MECHANICAL-POWER-PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
7Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
06using expansion or contraction of bodies due to heating, cooling, moistening, drying, or the like
CPC
F03G 7/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
7Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
06using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
F03G 7/065
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
7Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
06using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
065using a shape memory element
Applicants
  • SAES GETTERS S.P.A. [IT]/[IT]
Inventors
  • CITRO, Marco
  • FUMAGALLI, Luca
  • ZANELLA, Matteo
  • SCARLATA, Michele
Agents
  • CONCONE, Emanuele
Priority Data
10201900000471529.03.2019IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LINEAR ACTUATOR COMPRISING A SHAPE MEMORY ALLOY COIL SPRING OPERATING AT LOW ELECTRICAL POWER
(FR) ACTIONNEUR LINÉAIRE COMPORTANT UN RESSORT HÉLICOÏDAL EN ALLIAGE À MÉMOIRE DE FORME FONCTIONNANT SOUS FAIBLE PUISSANCE ÉLECTRIQUE
Abstract
(EN)
The present invention relates to linear actuators comprising an electrically-controlled shape memory alloy coil spring (23) suitable to provide linear displacements in valves, switches, lock systems and provided with a crimped terminal at each extremity, each of said crimped terminals comprising a crimping component (21) and an engaging member (22) suitable to mount the spring (23) into the linear actuator. The invention further discloses the use of said spring (23) with particular geometrical characteristics and crimping system assuring the maximization of the available stroke and fatigue life, structural simplicity, low electrical power requirements and thermal inertia, small size.
(FR)
La présente invention concerne des actionneurs linéaires comportant un ressort hélicoïdal (23) en alliage à mémoire de forme commandé électriquement, aptes à générer des déplacements linéaires dans des vannes, interrupteurs, systèmes de serrures et munis d'une borne sertie à chaque extrémité, chacune desdites bornes serties comportant un composant (21) de sertissage et un organe (22) d'interaction convenant pour monter le ressort (23) dans l'actionneur linéaire. L'invention concerne en outre l'utilisation dudit ressort (23) doté de caractéristiques géométriques particulières et d'un système de sertissage garantissant la maximisation de la course utile et de la durée de vie en fatigue, la simplicité structurale, de faibles besoins en puissance électrique et une faible inertie thermique, ainsi qu'une petite taille.
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