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Shape memory alloy actuator and method thereof

A technology of memory alloys and actuators, which is applied in the direction of instruments, machines/engines, mechanisms that generate mechanical power, etc., and can solve problems such as large height gaps, inability to provide, and large footprints

Active Publication Date: 2021-11-02
HUTCHINSON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these types of systems suffer from system complexities that result in bulky systems requiring large footprints and large height clearances
Additionally, existing systems cannot provide a high Z-travel range with a compact, low-profile footprint

Method used

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  • Shape memory alloy actuator and method thereof
  • Shape memory alloy actuator and method thereof
  • Shape memory alloy actuator and method thereof

Examples

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Embodiment Construction

[0098] Described herein are embodiments of SMA actuators that include a compact footprint and provide a high actuation height, eg, movement in the positive z-axis direction (z-direction), referred to herein as z-stroke. Examples of SMA actuators include SMA warp actuators and SMA piezoelectric bimorph actuators. SMA actuators can be used in many applications, including but not limited to as autofocus actuators in lens assemblies, microfluidic pumps, sensor displacement, optical image stabilization, optical zoom components, to mechanically strike two surfaces to Produces the vibratory sensation commonly found in tactile feedback sensors and devices, as well as in other systems using actuators. For example, embodiments of the actuators described herein may be used as haptic feedback actuators for use in cell phones or wearable devices configured to provide the user with an alert, notification, warning, touch area, or response to pressing a button . Additionally, more than one ...

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Abstract

SMA actuators and related methods are described. One embodiment of an actuator includes a base; a plurality of buckle arms; and at least a first shape memory alloy wire coupled with a pair of buckle arms of the plurality of buckle arms. Another embodiment of an actuator includes a base and at least one bimorph actuator including a shape memory alloy material. The bimorph actuator is attached to the base.

Description

[0001] This application is a divisional application of the Chinese invention patent application submitted on May 4, 2018 with application number 201880029763.5. [0002] Cross References to Related Applications [0003] This application claims priority to U.S. Patent Application No. 15 / 971,995, filed May 4, 2018, and further claims U.S. Provisional Patent Application No. 62 / 502,568, filed May 5, 2017 and filed March 30, 2018 Priority to filed US Provisional Patent Application 62 / 650,991, the entire contents of which are incorporated herein by reference. technical field [0004] Embodiments of the invention relate to the field of shape memory alloy systems. In particular, embodiments of the invention relate to the field of shape memory alloy actuators and methods related thereto. Background technique [0005] Shape memory alloy ("SMA") systems have moving components or structures that may, for example, be used in conjunction with camera lens elements to act as autofocus act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/64G02B7/08G02B7/09G03B3/10F03G7/06G03B13/36
CPCG02B27/646G02B7/08G02B7/09G03B3/10G03B2205/0007G03B2205/0046G03B2205/0076F03G7/065F03G7/06
Inventor M·A·米勒D·E·迈尔斯M·W·戴维斯N·K·贝宁
Owner HUTCHINSON TECH