Shape metal alloy (SMA) bimorph actuators with reduced wire exit angle
US11982263B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 2023 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | May 2, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2205/0076
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present embodiments relate to a shape memory alloy (SMA) actuator with a joint between an SMA wire the SMA actuator being disposed at a bottom surface of the SMA actuator. The SMA actuator can include at least one fixed end configured to be fixed to a carriage, at least one free end, at least one beam connecting the fixed end and the free end, and at least one SMA wire. The at least one SMA wire can be electrically connected to the at least one fixed end and the at least one free end via electrical contact portions. The position of the at least one SMA wire being affixed to the bottom surface can allow for reduced stress and a wire exit angle at the weld joint between each SMA wire and the actuator, improving resiliency of the SMA actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.