Wheel Train Pointer Layout Using Multi-Position Shaft Holes
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Solution Overview
Problem
Existing wristwatch designs require replacement of supporting members when the installation position of the pointer is changed, leading to inefficiency and increased manufacturing costs.
Innovation Solution
A wheel train device with a dial plate, wheel train section, and supporting members featuring multiple shaft attachment holes that allow the pointer wheel to be selectively attached in different positions, eliminating the need for member replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the supporting member is designed with a single shaft attachment hole, then the structure is simple and easy to manufacture, but the installation position of the pointer cannot be changed without replacing the supporting member
Solution Approach 1:
The supporting member is designed with multiple shaft attachment holes at different positions, allowing the same component to support the pointer wheel at various locations. This multi-functional design enables the supporting member to adapt to different pointer installation requirements without needing to be replaced or modified, thereby improving adaptability while maintaining structural simplicity.
2Adaptability or versatility
If the supporting member is replaced to change the pointer installation position, then the pointer can be installed at a different position, but the manufacturing cost and time increase
Solution Approach 1:
The supporting member is segmented with multiple discrete shaft attachment holes positioned at different locations. This segmentation allows the pointer wheel to be attached at any of the predetermined positions without requiring a completely different supporting member. The segmented design with multiple attachment points provides flexibility in installation position while avoiding the need for costly and time-consuming replacement manufacturing.
3Ease of operation
If multiple shaft attachment holes are provided in the supporting member, then the pointer installation position can be changed without replacement, but the manufacturing precision requirements increase
Solution Approach 1:
The shaft attachment holes are pre-positioned at predetermined locations during the manufacturing of the supporting member. By preparing these attachment holes in advance at fixed, precise positions, the design enables easy change of pointer installation positions without requiring high-precision adjustments or complex manufacturing processes. The preliminary positioning of holes ensures that when the pointer wheel is attached at different positions, the required precision is already built into the supporting member's manufacturing.
Data Source
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AI summary
A wheel train device including a dial plate (6) having a display area (11a, 12a) provided between a central portion and an outer peripheral portion, a wheel train (17) section having a pointer wheel (25) to which a pointer (15) that moves above the display area (11a. 12a) is attached, a supporting member (18, 19) which supports the wheel train section (17) in an area corresponding to the display area (11a, 12a), and a plurality of shaft attachment holes (29a, 29b, 33a, 33b, 42a, 42b, 42c) which are provided in a plurality of positions of the supporting member (18, 19) and to which the pointer wheel is selectively attached in one of the plurality of positions.