Watch Clasp Lock Mechanism for Secure Release Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing clasps, such as those described in JP-A-9-56425, face issues where the lock member can be erroneously moved to a position where the push operation is restricted, leading to engagement failure and requiring reoperation, and there is no mechanism to prevent unintended release during activities like diving.
Innovation Solution
A clasp design featuring a coupling member with an engagement member that can engage or release without operating an operation member, and a lock member that restricts or permits operation, ensuring engagement is maintained even when the operation member is not engaged with the lock member, and the engagement member is configured to move to the release position, and the lock member is configured to move to the operation member, and the lock member is configured to prevent unintended release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lock member is moved to the operation restriction position to prevent unintended release during diving, then the reliability is improved, but the ease of operation deteriorates because the push button operation is restricted
Solution Approach 1:
The lock member is designed to be movable between two positions: operation permission position and operation restriction position. This dynamic configuration allows the system to switch between allowing and restricting push button operations based on whether the clasp is engaged, resolving the contradiction between reliability and ease of operation
Solution Approach 2:
The lock member automatically responds to the engagement state of the clasp. When the engagement member engages with the engaged portion, the lock member is positioned to permit operation. When disengaged, it restricts operation. This feedback mechanism ensures the system adapts to its state, maintaining both reliability and operational convenience
2Reliability
If the lock member is erroneously moved to the operation restriction position when the clasp is not engaged, then the reliability is improved, but the ease of operation deteriorates because the engagement member cannot be engaged
Solution Approach 1:
The clasp is divided into independent functional components: the engagement member that can engage with the engaged portion, and the lock member that controls push button operation. This segmentation allows the engagement member to function independently of the lock member's position, enabling engagement even when the lock member is in the operation restriction position
Solution Approach 2:
The engagement member is designed to be capable of engagement at any time, regardless of the lock member's position. This preliminary capability ensures that even if the lock member is erroneously positioned, the engagement can still be established, preventing the worsening of operational difficulty
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A clasp (1) includes a coupling member having an engaged portion and a clasp main body (4), in which the clasp main body includes an engagement member, an operation member (72), and a lock member (71), the engagement member is configured to be engaged with an engaged portion without operating the operation member in a state where the engagement member is not engaged with the engaged portion, an engagement is released by moving the engagement member to a release position by the operation member in a state where the engagement member is engaged with the engaged portion, and when the lock member is moved to the operation restriction position, the engagement member is restricted from being moved to the release position by the operation member.