Watch Pointer Engraving Structure for Low Weight and Strength
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Solution Overview
Problem
Conventional wristwatch pointers face a challenge in balancing weight reduction with maintaining strength, as decorative patterns like depressed sections or holes can weaken the pointer body.
Innovation Solution
A pointer design featuring a plate member with an engraved section on its back surface and reinforcing sections at the edge, formed using laser processing, which reduces weight while ensuring strength and balanced rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a depressed section or hole section is formed in the pointer body for weight reduction, then the weight decreases, but the strength of the pointer body cannot be ensured
Solution Approach 1:
The patent applies local quality by creating different structural characteristics in different regions of the pointer body. The engraved section provides weight reduction in the central area, while the reinforcing section at the edge maintains structural strength. This localized differentiation allows each region to serve its specific function optimally.
Solution Approach 2:
The patent segments the pointer body into functionally distinct regions: an engraved section for weight reduction and a reinforcing section for structural support. This segmentation allows the pointer to simultaneously achieve weight reduction and strength maintenance through spatially separated structural features.
2Duration of action of moving object
If the pointer body is made lighter through decorative patterns, then the battery life increases, but the pointer may not rotate balancedly
Solution Approach 1:
The reinforcing section is strategically positioned at the edge of the pointer body to maintain rotational balance and stability. This localized reinforcement ensures that while the central area is lightweightened for battery savings, the edge retains sufficient mass and structural integrity for balanced rotation.
Solution Approach 2:
The reinforcing section acts as a counterweight element that compensates for the weight reduction in the engraved section. By positioning material at the edge, the patent creates a counterbalancing effect that maintains the pointer's rotational equilibrium despite the overall weight reduction.
3Ease of manufacture
If the pointer body is weakened by decorative patterns, then the manufacturing flexibility increases, but the attachment security decreases
Solution Approach 1:
The patent applies local quality by concentrating the manufacturing flexibility in the engraved section while preserving structural integrity in the reinforcing section. The reinforcing section at the edge maintains attachment security through its solid, uninterrupted structure, while the engraved section allows for decorative manufacturing variations.
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 achieves a lighter weight while maintaining strength, allowing for larger size and longer battery life by reducing the load on the timepiece movement and ensuring secure attachment and balanced rotation.
Implementation Method 1
a pointer of a wristwatch is known which has a structure where a depressed section or a hole section serving as a decorative pattern is formed in a pointed body by a laser beam
Data Source
AI summary
A pointer including a pointer body constituted by a plate member, an engraved section provided in at least one of front and back surfaces of the pointer body excluding an edge of the pointer body, and a reinforcing section provided at the edge of the pointer body by the engraved section.