Piezoelectric Vibrator Exposed Wire End Surface Connection
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Solution Overview
Problem
Existing piezoelectric actuators face challenges in securing sufficient space for external electrical connections due to the placement of supporting parts, which hinders efficient connection and reliability in devices like piezoelectric motors and robots.
Innovation Solution
A vibrator design featuring a vibrating part with piezoelectric material between plates, a supporting part with an interplate portion for insulation, and exposed wires for easy connection, along with a manufacturing method that includes forming conductor portions for enhanced electrical connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a supporting part is provided around the vibrator in a plan view, then the vibrator is supported and fixed to an object, but the side surface of the vibrator faces the supporting part making external electrical connection harder
Solution Approach 1:
The wire is routed from the side surface to the end surface of the vibrator, changing the dimension of wire exposure from lateral to terminal. This allows external electrical connection to be made at the end surface which is not blocked by the supporting part, thus resolving the contradiction between fixing reliability and electrical connection ease.
2Ease of operation
If the wire is exposed from the side surface of the vibrator, then external electrical connection can be made, but the supporting part blocks the space needed for connection
Solution Approach 1:
The wire exposure location is shifted from the side surface to the end surface of the vibrator. The end surface provides an alternative spatial dimension for connection that is not occupied by the supporting part, thus ensuring sufficient connection space while maintaining ease of electrical connection.
3Force
If multiple piezoelectric materials are stacked, then the drive force is higher, but the thickness increases
Solution Approach 1:
The piezoelectric actuator is divided into multiple piezoelectric materials stacked in series between the vibrating plates. Each piezoelectric material contributes to the overall drive force, and the segmented structure allows for increased force output without requiring a single thick element, thus managing the thickness parameter while improving drive force.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for easier and more reliable external electrical connections, improved drive force, and increased reliability in piezoelectric actuators, motors, and robots by ensuring proper bonding and preventing short circuits.
Implementation Method 1
a vibrating part including a pair of vibrating plates 21, 31 and a piezoelectric material 42 provided between the pair of vibrating plates 21, 31
Data Source
AI summary
A vibrator includes a vibrating part including a pair of vibrating plates and a piezoelectric material provided between the pair of vibrating plates, a supporting part including a pair of supporting plates and an interplate portion provided between the pair of supporting plates, and a wire provided in the vibrating part and the supporting part, wherein the wire is exposed from the supporting part.