Watch Coil Spring Guide Structure for Stable Solar Panel Contact
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Solution Overview
Problem
Existing wristwatch designs face issues with unstable connections between the circuit board and solar panel due to coil spring buckling, leading to increased stress and loads on the solar panel.
Innovation Solution
A wristwatch design incorporating a resilient guide holding member and a resilient conductive member to guide and hold the coil spring in vertical directions, preventing buckling and reducing stress on the piezoelectric element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a coil spring is used to electrically connect the circuit board and solar panel, then electrical connection is achieved, but the coil spring deforms and causes unstable connection
Solution Approach 1:
The patent introduces a resilient guide holding member as an intermediary component between the coil spring and the solar panel/circuit board. This guide holding member has a guide portion that guides the coil spring in the vertical direction and prevents lateral deformation, while the resilient holding portion allows controlled movement. This mediator resolves the contradiction by maintaining electrical connection reliability while preventing unstable deformation of the coil spring.
Solution Approach 2:
The patent changes the structural parameters of the coil spring system by adding the guide holding member with specific guide and holding portions. This modifies the movement parameters of the coil spring, constraining it to vertical movement only and preventing lateral buckling. The parameter change transforms the coil spring's deformation characteristics from unstable multi-directional deformation to controlled unidirectional compression, resolving the stability issue.
2Adaptability or versatility
If the coil spring is allowed to move freely to accommodate panel movement, then adaptability is improved, but stress and loads on the solar panel increase
Solution Approach 1:
The resilient guide holding member acts as a mediator that allows controlled movement while limiting excessive displacement. The guide portion permits vertical movement to accommodate panel position changes, maintaining adaptability. The resilient holding portion provides a stopping point that prevents over-compression, thereby limiting stress on the solar panel. This intermediary structure resolves the contradiction between movement accommodation and stress reduction.
Solution Approach 2:
The resilient holding portion of the guide holding member provides beforehand cushioning by creating a predetermined stop point for the coil spring compression. When the solar panel moves toward the circuit board, the coil spring compresses until it contacts the resilient holding portion, which absorbs excess energy and prevents further compression. This prior cushioning mechanism protects the solar panel from excessive stress while still allowing necessary movement for adaptability.
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
Stable electrical connections are maintained without coil spring buckling, reducing stress and loads on the piezoelectric element, ensuring consistent sound generation and improved durability.
Implementation Method 1
a resilient conductive member which electrically connects the first contact member with the second contact member
Implementation Method 2
a resilient guide holding member having a guide portion which guides the resilient conductive member in opposing directions, and a resilient holding portion which holds the guide portion such that the guide portion is resiliently movable
Data Source
AI summary
An electronic device including a first contact member, a second contact member which is arranged opposing the first contact member, a resilient conductive member which electrically connects the first contact member with the second contact member, and a resilient guide holding member having a guide portion which guides the resilient conductive member in opposing directions of the first contact member and the second contact member, and a resilient holding portion which holds the guide portion such that the guide portion is resiliently movable in the opposing directions of the first contact member and the second contact member.