Safety Belt Buckle Stop Member Prevents Accidental Release
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Solution Overview
Problem
Conventional safety belt buckles can be easily released by misaction, posing a risk of accidental unbuckling, particularly for children, as they require only a single button press for release.
Innovation Solution
A safety belt buckle design featuring a buckle member with a chamber and opening, a hook that moves between two positions, a stop member with a press button, and a latch member with a tongue plate, where the stop member prevents the hook from moving to a position that allows detachment unless the press button is pressed, ensuring intentional release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single button press mechanism is used for buckle release, then the ease of operation is improved, but the reliability deteriorates due to accidental unbuckling
Solution Approach 1:
The release mechanism is segmented into two distinct operational steps: first pressing the release button to disengage the stop member, and second manually separating the latch member from the buckle member. This segmentation prevents accidental release by requiring deliberate sequential actions rather than a single simple press.
Solution Approach 2:
The stop member is preliminarily positioned to block the latch member's movement path. Before the latch member can be detached, the user must first perform the preliminary action of pressing the release button to move the stop member out of the way, ensuring intentional release.
2Reliability
If a complex multi-step release mechanism is used, then the reliability is improved by preventing accidental unbuckling, but the device complexity increases
Solution Approach 1:
The release button and stop member are merged into a single integrated component. Pressing the button directly actuates the stop member to move out of the blocking position, eliminating the need for separate control mechanisms and reducing overall structural complexity while maintaining the two-step release functionality.
Solution Approach 2:
The spring automatically returns the stop member to its blocking position after the button is released, and the latch member's movement naturally follows the stop member's repositioning. This self-service mechanism eliminates the need for additional actuators or control systems, simplifying the overall device structure.
3Reliability
If the stop member blocks the hook's moving trace, then the reliability is improved by preventing unintended release, but the ease of operation worsens due to requiring deliberate pressing action
Solution Approach 1:
The release button serves as an intermediary element between the user's finger and the stop member. By pressing the button, the user indirectly actuates the stop member to move out of the blocking position, providing a clear and deliberate indication of the user's intent to release the buckle while maintaining safety.
Data Source
AI summary
A safety belt buckle includes a buckle member, a hook, a stop member, and a latch member. The buckle member has a chamber therein, which is communicated with an opening. The latch member has a tongue plate which is inserted into the chamber through the opening. The stop member and the hook are provided in the chamber, and the latch member is not able to be detached from the buckle member because that the stop member stops the hook from moving to engage the tongue plate. By pressing a press button on the stop member, the stop member is moved to a predetermined position, and no longer stops the hook from disengaging the tongue plate. The latch member is able to be detached from the buckle member at this time.