Watch Switch Head Buffer Structure for Impact Resistance
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Solution Overview
Problem
Existing switch devices for wristwatches lack effective impact resistance and protection for operation heads, leading to potential breakages and reduced durability.
Innovation Solution
A switch device design featuring a case with through-holes, operation members with spring-biased operation heads, and a protective buffer member made of elastic urethane resin, which includes storage structures with thick bottoms to absorb impacts and prevent transmission to the case body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If operation heads are exposed on the case body surface, then ease of operation is improved, but impact resistance deteriorates
Solution Approach 1:
The patent applies beforehand cushioning by providing a protective buffer member with storage that covers the operation heads before impacts occur. The storage structure with its thick bottom acts as a pre-positioned cushion that absorbs external impacts, preventing them from reaching the operation heads. This resolves the contradiction by maintaining exposed operation heads for ease of use while adding protective cushioning for impact resistance.
Solution Approach 2:
The protective buffer member serves as an intermediary element between the external environment and the operation heads. It mediates the interaction by absorbing and dissipating impact forces before they can affect the operation heads, thus protecting them while allowing the operation heads to remain accessible for operation.
2Object-affected harmful factors
If operation heads are protected by covering structures, then impact resistance is improved, but ease of operation deteriorates
Solution Approach 1:
The storage structure provides beforehand cushioning by positioning the protective buffer member to cover operation heads only when needed for impact protection. The operation heads remain exposed during normal operation, maintaining ease of use, but are covered by the protective buffer member when impacts are anticipated, thus resolving the contradiction between protection and accessibility.
3Object-affected harmful factors
If protective buffer member is added, then impact resistance is improved, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating the protective buffer member as a single unified component that provides protection for multiple operation heads simultaneously. The storage structure combines multiple protective functions into one element, reducing the overall complexity compared to providing individual protective covers for each operation head.
Solution Approach 2:
The protective buffer member with storage serves multiple functions: it protects operation heads from impacts, provides a mounting structure for securing the buffer member to the case, and maintains the exposed accessibility of operation heads during normal use. This multi-functionality reduces device complexity by consolidating multiple protective and structural roles into a single component.
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 solution enhances impact resistance by buffering external forces, preventing operation head damage and potential breakages of the timepiece module, thereby improving the overall durability and reliability of the wristwatch.
Implementation Method 1
a protective buffer member (16) which has elasticity and is attached to an outer surface of the case body (10)
Implementation Method 2
a spring member (19) that biases the operation head (18) in a direction of pushing the operation head (18) toward the outside of the case body (10)
Data Source
AI summary
A switch device includes: a case provided with a through-hole; an operation member having an operation shaft to be inserted into the through-hole of the case, and an operation head provided at an outer end of the operation shaft; and a protective buffer member which has elasticity and is attached to an outer surface of the case. The protective buffer member includes a storage which has a bottom facing an inner end surface of the operation head and stores a periphery of the operation head.