Detachable Electromechanical Transducer for Electronic Timepiece Alignment
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Solution Overview
Problem
The direct assembly of electromechanical transducer components in electronic devices, such as electronic timepieces, complicates the detection of rotor and substrate misalignment due to warpage or axial runout, leading to low workability and quality issues.
Innovation Solution
A detachable electromechanical transducer design with a two-layer structure, including a first, second, and optional third plate, featuring a rotor, fixed substrate, charged portions, opposing electrodes, and an adjusting unit for precise gap adjustment and sliding property control, along with a gear train for motive power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If components are directly assembled in the housing, then device integration is achieved, but detection of rotor and substrate misalignment becomes difficult
Solution Approach 1:
The device is divided into a transducer unit and a housing, with the transducer detachably attached to the housing. This segmentation allows the transducer components (rotor, fixed substrate, charged portions, opposing electrodes) to be assembled and adjusted as a separate module, making misalignment detection feasible before final installation.
Solution Approach 2:
A detachable transducer unit serves as an intermediary between the rotor assembly and the housing. This intermediate structure enables external access for alignment adjustment and detection, while still achieving integrated device functionality when attached to the housing.
2Reliability
If rotor and substrate are disposed close to each other for electrostatic interaction, then transducer performance improves, but adjustment precision requirements increase
Solution Approach 1:
The transducer design incorporates adjustable components that allow dynamic adjustment of the gap between the rotor and fixed substrate during assembly and maintenance. This dynamic adjustment capability enables achieving the required precision without demanding extremely tight manufacturing tolerances on all components.
Solution Approach 2:
The transducer unit is pre-assembled with preliminary alignment adjustments made before attachment to the housing. This preliminary action allows for careful gap adjustment and misalignment detection in a controlled setting, ensuring optimal performance before final installation.
3Productivity
If direct assembly is used, then manufacturing steps are reduced, but workability for checking and adjusting components decreases
Solution Approach 1:
By segmenting the device into a detachable transducer unit and housing, the assembly process is divided into manageable stages. The transducer can be pre-assembled and tested as a module, improving workability during critical alignment steps, while still achieving efficient final assembly through simple attachment to the housing.
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 design enhances the assembly and maintenance workability of electromechanical transducers, ensuring high-quality integration and operation by allowing for easy adjustment and alignment of components, improving power generation and motor driving efficiency.
Implementation Method 1
an electromechanical transducer using electrostatic interaction between a charged portion and an opposing electrode to perform transduction between electric and motive power
Implementation Method 2
an adjusting unit for adjusting sliding properties of the rotating shaft
Implementation Method 3
a gear train coupled to the rotating shaft, wherein the gear train transmits motive power generated by the rotor rotated by electric power of the electronic device to the electronic device
Data Source
AI summary
Provided is an electromechanical transducer to be detachably attached to an electronic device, the transducer including: first and second plates; a rotor rotating around a rotating shaft supported by the plates; a fixed substrate disposed between the plates and facing the rotor; a charged portion having sub-regions disposed on the rotor at intervals in a rotating direction thereof so as to face the fixed substrate; an opposing electrode disposed on the fixed substrate so as to face the rotor; an adjusting unit for adjusting sliding properties of the rotating shaft, the adjusting unit being provided for at least one of the plates; and a gear train coupled to the rotating shaft. The gear train transmits motive power generated by the rotor rotated by electric power of the electronic device to the electronic device or transmits motive power generated by a change in orientation of the electronic device to the rotor.