Watch Regulating Switch Structure for Impact-Stable Contact
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Solution Overview
Problem
The regulating switch lever in existing electronic watches with a leaf spring structure is prone to deformation due to impact, leading to insufficient pressure application on the circuit board and improper functioning of the logical slowing/quickening mechanism.
Innovation Solution
A watch design incorporating a guide pin, lever body, coil spring, and holding member, where the lever body and coil spring are separated, with a cylindrical lever shaft and flange to stabilize the lever body's posture, and a holding member to maintain spring force, ensuring reliable contact with the circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a leaf spring structure is used for the regulating switch lever, then the lever can apply pressure to the circuit board, but the lever is prone to deformation due to impact
Solution Approach 1:
The regulating switch lever is divided into separate components: a lever body and a coil spring. The lever body provides the structural framework while the coil spring provides the pressing force, separating the functions of structural support and force application to prevent deformation under impact.
Solution Approach 2:
The coil spring replaces the rigid leaf spring structure with a dynamic, elastic component that can absorb impact forces through compression and expansion, maintaining reliability while continuing to apply the necessary pressing force to the circuit board.
2Stability of the object's composition
If the lever body is stabilized with a guide pin and flange, then the posture is maintained, but the device complexity increases
Solution Approach 1:
The guide pin acts as an intermediary component that guides and stabilizes the lever body's movement, while the flange provides a stopping point to maintain proper posture. These simple intermediary elements achieve stability without requiring complex mechanisms.
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
The design stabilizes the lever body's posture, maintains spring force, and prevents deformation, ensuring accurate and stable logical slowing/quickening functionality even under impact, thereby maintaining time accuracy.
Implementation Method 1
a coil spring including an opening portion into which the guide pin is inserted and presses the lever body toward the circuit board
Data Source
AI summary
A main plate at which a watch component is disposed, a circuit board including a regulating pattern, a regulating switch disposed contactably with the circuit board, and a holding member disposed on a side opposite to the circuit board with respect to the regulating switch are included, the regulating switch includes a guide pin fixed to the main plate, a lever body including an opening portion into which the guide pin is inserted and a contact portion that contacts the regulating pattern, and a coil spring including an opening portion into which the guide pin is inserted and presses the lever body toward the circuit board, and the holding member holds the coil spring sandwiched between the holding member and the lever body.