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1. WO2020229894 - ACTUATOR ASSEMBLY WITH SMA

Publication Number WO/2020/229894
Publication Date 19.11.2020
International Application No. PCT/IB2020/000520
International Filing Date 18.05.2020
IPC
G06F 3/01 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01Input arrangements or combined input and output arrangements for interaction between user and computer
CPC
G06F 3/016
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01Input arrangements or combined input and output arrangements for interaction between user and computer
016Input arrangements with force or tactile feedback as computer generated output to the user
H01H 1/16
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
1Contacts
12characterised by the manner in which co-operating contacts engage
14by abutting
16by rolling; by wrapping; Roller or ball contacts
H01H 1/50
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
1Contacts
50Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
H01H 13/14
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
13Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
02Details
12Movable parts; Contacts mounted thereon
14Operating parts, e.g. push-button
H01H 9/04
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
9Details of switching devices, not covered by groups H01H1/00 - H01H7/00
02Bases, casings, or covers
04Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
Applicants
  • CAMBRIDGE MECHATRONICS LIMITED [GB]/[GB]
Inventors
  • FLOURIS, Andreas
  • VAN WYK, Peter
  • CARR, Joshua
  • BUNTING, Stephen
Priority Data
1906916.016.05.2019GB
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) ACTUATOR ASSEMBLY WITH SMA
(FR) ENSEMBLE ACTIONNEUR AVEC SMA
Abstract
(EN) An actuator assembly comprises a static element (134); a moveable element (122) moveable relative to the static element in a first direction; and an intermediate element (124) provided in a spaced relationship with the moveable element, and movable in a second different direction relative to the static element. At least one shape-memory alloy (SMA) wire is coupled to both the static element and the intermediate element so that on contraction the at least one SMA wire moves the intermediate element in the second direction. There is also at least one bearing (130a, 130c) arranged to couple the intermediate element to the moveable element such that movement of the intermediate element in the second direction causes movement of the moveable element in the first direction. Both of the moveable element and the intermediate element comprise at least one groove within which the at least one bearing is located and each groove has an inclined surface which engages with the at least one bearing.
(FR) L'invention concerne un ensemble actionneur comprenant un élément statique (134) ; un élément mobile (122) mobile par rapport à l'élément statique dans une première direction ; et un élément intermédiaire (124) disposé dans une relation espacée par rapport à l'élément mobile, et mobile dans une seconde direction différente par rapport à l'élément statique. Au moins un fil d'alliage à mémoire de forme (SMA) est accouplé à la fois à l'élément statique et à l'élément intermédiaire de sorte que, lors de la contraction, ledit fil de SMA déplace l'élément intermédiaire dans la seconde direction. L'invention concerne également au moins un palier (130a, 130c) disposé de façon à accoupler l'élément intermédiaire à l'élément mobile de sorte que le déplacement de l'élément intermédiaire dans la seconde direction provoque le déplacement de l'élément mobile dans la première direction. L'élément mobile et l'élément intermédiaire comprennent tous deux au moins une rainure à l'intérieur de laquelle se trouve ledit palier et chaque rainure comporte une surface inclinée qui vient en prise avec ledit palier.
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