Bending actuator element and bending actuator module

A technology of bending converters and components, applied in electrical components, piezoelectric/electrostrictive/magnetostrictive devices, textiles and papermaking, etc., can solve the problems of high damage rate, high fracture sensitivity, etc., and achieve a reduction in damage rate , protection from damage, protection from external influences

Active Publication Date: 2010-08-04
JOHNSON MATTHEY PIEZO PROD GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite careful handling, the high fracture sensitivity when installing or orienting the bending converter leads to an undesirably high rate of damage

Method used

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  • Bending actuator element and bending actuator module
  • Bending actuator element and bending actuator module
  • Bending actuator element and bending actuator module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] figure 1 The bending converter element 1 is shown in a perspective view, comprising a protective housing 3 and a bending converter 4 arranged in the protective housing 3 . The bending converter 4 arranged in the housing 3 has a flat carrier 6 which is provided on both sides with a piezoelectrically active covering layer 7 . The bending converter 4 is fastened with its fastening end 9 inside the protective housing 3 . At the opening 11 of the protective housing 3 a floating end 10 of the bending converter 3 protrudes, which is movable in the direction indicated by the arrow.

[0043] The protective housing 3 is formed as a one-piece injection-molded part of glass-fibre-reinforced ABS plastic. For assembly, the bending adapter 4 is introduced into the interior of the protective housing 3 starting from the opening 11 with the fastening end 9 at the front. A clamping receptacle for bending the free end 10 of the converter 4 is integrally formed at the end of the protecti...

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PUM

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Abstract

The invention relates to a bending actuator element (1, 40) comprising a protective casing (3) and a bending actuator (4) accommodated therein, and a flat support (6) and a piezoelectrically active coating (7) applied to at least one side thereof. The bending actuator (4) is substantially enclosed by the protective casing (3) and is directly fastened in the protective casing (3) with its fixed end (9). The invention further relates to a bending actuator module (28) having a plurality of said bending actuator elements (1, 40). The fact that the bending actuator (4) is immobilized inside a protective casing (3) allows a unit that can be easily mounted, the risk of being damaged due to the destruction of the piezoelectric coating (7) during mounting or transport being substantially reduced compared to bending actuators of the prior art.

Description

technical field [0001] The invention relates to a bending transducer element comprising a bending transducer comprising a flat carrier and a piezoelectrically acting covering layer applied to at least one side of the carrier. The invention also relates to a bending converter module in which a plurality of bending converter elements are assembled. Background technique [0002] Bending transducers, as mentioned at the outset for the bending transducer elements, are primarily used to exploit the indirect or reciprocal piezoelectric effect, ie to convert electrical energy into mechanical energy. Likewise, piezoelectric bending transducers are also suitable for converting mechanical energy into electrical energy. In this case, the direct piezoelectric effect is fully utilized. [0003] There are many technical applications for piezoelectric bending transducers. Such applications are, for example, as print heads in inkjet printers, as sensors for acceleration measurement or pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04B15/78
CPCD04B15/78H10N30/88H10N30/2042H10N30/306
Inventor M·吕特尔S·科隆普J·京特H·克雷默J·施莱歇
Owner JOHNSON MATTHEY PIEZO PROD GMBH
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