Piezoelectric actuator connected to flexible cables
US5239224A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Nov 16, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/875
Abstract
A piezoelectric actuator having a significantly strong coupling between each of its external electrodes and the matching flexible cable. This piezoelectric actuator comprises a ceramic layer body made of a large number of piezoelectric ceramic layers stacked to a predetermined depth; a plurality of internal electrodes sandwiched between the ceramic layers; a pair of external electrodes, the first electrode connecting every other one of the internal electrodes, the second electrode connecting every second internal electrode not connected to the first external electrode; and a pair of flexible cables connected to edges of the external electrodes. The external electrodes are soldered to the flexible cables. Upon soldering, a metal intervening member is inserted in a hole made on the coupling part of each flexible cable. Soldering the intervening member provides a strongly soldered coupling between external electrode and flexible cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.