Piezoelectric Sounding Component Pin Terminal Alignment
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Solution Overview
Problem
Piezoelectric sounding components with pin-type terminals face issues of misalignment and stress-induced contact failures, leading to variations in sounding characteristics and potential sound impairments.
Innovation Solution
The design incorporates a piezoelectric sounding component with a diaphragm, a case, and two pin terminals on the lid, featuring extended portions, extension portions, rising portions, and contact portions, along with fixing and guide portions to maintain terminal posture and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the pin-shaped metal terminal is cut to fit the mounting substrate, then the terminal can be installed in the substrate, but stress is applied to the terminal causing rotation and misalignment
Solution Approach 1:
The metal terminal is divided into multiple segments: a fixed portion inserted into the mounting substrate, an extended portion extending from the substrate, and a contact portion contacting the piezoelectric element. This segmentation allows the terminal to be installed without cutting, eliminating stress-induced misalignment while maintaining electrical connection functionality.
Solution Approach 2:
The terminal is pre-configured with the extended portion and contact portion in specific spatial relationships before installation. The extended portion is positioned to extend from the substrate surface, and the contact portion is pre-positioned to contact the piezoelectric element, ensuring proper alignment is achieved before the piezoelectric element is mounted.
2Adaptability or versatility
If the metal terminal rotates due to stress, then the terminal can accommodate mounting variations, but contact between the terminal and piezoelectric diaphragm is compromised
Solution Approach 1:
Different portions of the terminal have different functional properties: the fixed portion provides mechanical anchoring in the substrate, the extended portion provides structural support and positioning, and the contact portion provides electrical connection. This local differentiation ensures that each portion optimizes its specific function without compromising overall reliability.
Solution Approach 2:
The extended portion acts as an intermediary element between the fixed portion in the substrate and the contact portion contacting the piezoelectric element. It transmits positional information and maintains the spatial relationship necessary for reliable contact while allowing the terminal to adapt to mounting variations.
3Device complexity
If the terminal structure is simplified, then manufacturing cost is reduced, but terminal posture and alignment cannot be maintained
Solution Approach 1:
The terminal combines multiple functions into a single integrated component: mechanical fixation, positional extension, and electrical contact. This merging eliminates the need for separate alignment features or adjustment mechanisms, maintaining manufacturing precision while reducing overall device complexity.
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 enhances the reliability of the piezoelectric sounding component by maintaining consistent contact between the pin terminals and the diaphragm, thereby reducing variations in sounding characteristics and preventing sound impairments.
Implementation Method 1
a diaphragm that vibrates when a voltage is applied thereto
Data Source
AI summary
A piezoelectric sounding component includes a diaphragm, a case having a case body and a lid, and two pin terminals disposed on the lid such that the two pin terminals are in contact with the diaphragm. At least one of the pin terminals includes an extended portion, an extension portion, a rising portion, and a contact portion. A first fixing portion fixes the position of a first bent portion and a first guide portion that is in contact with a second bent portion and that guides posture of the pin terminal are on a surface of the lid that faces the interior space.