Door Handle Lock with Segmented Concave-Convex Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door locks can be easily unlocked by children, posing a safety risk as they may unintentionally open doors, and current child safety locks are not secure enough to prevent unauthorized access.
Innovation Solution
A door handle lock system featuring a first and second lock body with concave and convex members that require external force to disengage, limiting the door handle's rotation and necessitating at least three fingers for unlocking, along with an indicator block for locking status, enhancing security by making unauthorized access difficult.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple rotary lock body is used, then the ease of operation is improved, but the reliability is worsened as children can easily unlock it
Solution Approach 1:
The lock body is divided into multiple segments including a first lock body with a movable part and a second lock body with concave and convex members. The movable part can move between locked and unlocked positions, creating distinct functional segments that work together to provide both ease of operation for adults and security against children
Solution Approach 2:
The movable part is designed to dynamically change position between locked and unlocked states. When the movable part moves to the unlocked position, the concave and convex members disengage, allowing easy operation. When locked, the members engage to provide security. This dynamic positioning resolves the contradiction between ease of operation and security
2Ease of operation
If the lock structure is simplified for easy unlocking, then the ease of operation is improved, but the reliability is worsened as it becomes easy to imitate and unlock
Solution Approach 1:
The concave and convex members are designed with asymmetric geometries that must align in specific orientations for unlocking to occur. This asymmetric design makes it difficult for children to imitate the unlocking motion, while adults can still operate it easily by following the correct sequence of movements
Solution Approach 2:
The locking mechanism incorporates multi-dimensional movement requirements. The movable part must move along specific trajectories and align multiple concave and convex members simultaneously, adding dimensional complexity that prevents simple imitation while maintaining ease of operation for those who know the correct method
3Reliability
If concave and convex members are engaged to limit movement, then the reliability is improved, but the device complexity is worsened
Solution Approach 1:
The concave and convex members are integrated into the lock bodies themselves rather than being separate components. The movable part of the first lock body and the corresponding second lock body incorporate these features directly, merging the locking function into the basic structure and reducing overall device complexity while maintaining reliability
Data Source
AI summary
A door handle lock and a locking method are provided. The door handle lock comprises a first lock body, a second lock body, and a locking part, and the locking part is engaged with a movable part to lock the first lock body, thus being difficult to unlock. The door handle lock is mounted within a rotation range of the door handle, and the rotation of the door handle is limited by the first lock body. Such a setting effectively prevents a child from unlocking without permission and then opening the door to escape, thus improving the security.