Safety Lock Device With Multi-Action Member Sequence
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Solution Overview
Problem
Children can easily open or close opening-type or split moving doors, posing a safety risk due to their lack of safety awareness, as the hinges often close automatically, potentially pinching their hands.
Innovation Solution
A safety lock device with a movable member and multiple action members, including a third action member with no operational effect, that requires specific sequences of operation to unlock, incorporating inclined or curved surfaces for secure fitting and a spring mechanism to maintain the locked state, preventing accidental unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking device is added to prevent children from opening doors, then safety performance is improved, but device complexity increases
Solution Approach 1:
The locking device is divided into multiple independent components: a lock body, a movable member with locking protrusion, and multiple action members (first, second, and third action members). Each component performs a specific function, allowing the system to achieve complex safety control through modular segmentation rather than a single complex mechanism.
Solution Approach 2:
Different action members have different functional properties: the first action member can independently trigger unlocking, the second action member requires coordination with the first, and the third action member is intentionally designed to be non-functional. This local differentiation in quality allows the system to provide both safety and anti-child operation features.
2Reliability
If multiple action members are used to require specific operation sequences, then prevention of accidental unlocking is improved, but ease of operation deteriorates
Solution Approach 1:
The lock body is designed with a preliminary locked state where the locking protrusion engages with the lock hole. The first action member is pre-configured to disengage the locking protrusion when pressed, enabling unlocking. This preliminary setup allows legitimate users to open the door easily after the correct sequence, while preventing accidental unlocking.
Solution Approach 2:
The third action member is intentionally designed as a non-functional element that cannot trigger unlocking. This preliminary anti-action feature specifically targets children who might randomly press different buttons, as the third action member produces no effect, thereby preventing accidental or malicious unlocking attempts.
3Reliability
If a non-functional third action member is incorporated, then deterrence of incorrect usage by children is improved, but device complexity increases
Solution Approach 1:
The third action member is designed with different functional quality compared to the first and second action members. While the first and second action members are connected to the movable member and can influence unlocking, the third action member is intentionally designed to be disconnected or mechanically inert, giving it a non-functional quality that deters children from pressing it.
Solution Approach 2:
The third action member is designed as a simple, inexpensive non-functional component that adds minimal structural complexity while providing significant safety benefit. It serves as a disposable-like element that children can press without consequence, thereby deterring incorrect usage without requiring complex detection or response mechanisms.
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 safety lock device effectively prevents children from easily opening the door, reducing the risk of pinching and enhancing safety by requiring a specific operation sequence and incorporating a non-functional third action member to deter incorrect usage.
Implementation Method 1
the return device is a spring, and the two ends of the spring are respectively connected to the movable member and the first lock body to keep the movable part extending
Data Source
AI summary
The present utility model discloses a safety lock device including a first lock body and a second lock body. The first lock body is provided with a movable member, a first action member and a second action member. The second action member and the first action member are operated sequentially to enable the movable member to act to unlock. The first action member or the second action member is operated individually that cannot achieve the unlocking. The unlocking of the safety lock device is completed only by fitting the two moving members with each other, thereby solving the problems of the easy unlocking by children and the potential safety hazards.