Webbing Adjustment Device with Segmented Guide Ring
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Solution Overview
Problem
Conventional three-point seat belt systems have complex structures, limited adjustment range, multi-step adjustments, and complicated operations, making it difficult to adjust the webbing height near the occupant's shoulder effectively, which can lead to neck injury in emergencies.
Innovation Solution
A webbing adjustment device comprising a cover, frame, and guiding ring member with a slider, allowing for stepless adjustment of the webbing height by moving the frame and slider relative to each other, and using magnets for improved positioning stability, enabling easy operation and automatic locking of the webbing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional height adjustment device is used, then the webbing height can be adjusted, but the structure becomes complex and the operation becomes complicated
Solution Approach 1:
The adjustment device is segmented into distinct functional modules: a cover assembly, a retractor mechanism, and a webbing path system. Each module performs a specific function, allowing for simplified design and easier manufacturing while maintaining adjustability functionality
Solution Approach 2:
The device incorporates a dynamic adjustment mechanism that allows the webbing height to be changed smoothly along the pillar. The adjustable component can move vertically along guide rails or slots, enabling continuous height adjustment rather than fixed positions, which simplifies the operation while maintaining functionality
2Adaptability or versatility
If a conventional height adjustment device is used, then the webbing height can be adjusted, but the adjustment range becomes short and requires multi-step adjustment
Solution Approach 1:
The adjustment device is designed to accommodate a wide range of heights along the pillar, making it universally applicable to different vehicle types and seating positions. The mechanism can adjust the webbing to multiple positions along a extended range, eliminating the need for multi-step adjustments and allowing users to reach the desired height in a single smooth motion
Solution Approach 2:
The adjustment mechanism provides continuous height adjustment capability, allowing the webbing to be positioned at any point within the adjustment range. This continuous action eliminates the need for discrete multi-step adjustments, improving ease of operation while expanding the effective adjustment range
3Reliability
If the webbing is fastened tightly without height adjustment, then the seat belt provides strong restraint, but the neck of the occupant may be slashed by the webbing
Solution Approach 1:
The device provides dynamic height adjustment capability that allows the webbing to be positioned at the optimal height for each occupant. By enabling the webbing to contact the shoulder rather than the neck, the system maintains reliable restraint function while eliminating the harmful effect of neck slashing in case of sudden movement or emergency
Data Source
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AI summary
A webbing adjustment device (1) has a cover (10), a frame (20), a slider (30), and a guiding ring member (40). The frame (20) is moveably disposed in the cover (10). The slider (30) is located in the cover (10) and has a through slot (331) formed through the slider (30). Webbing (2) inserted through the through slot (331) is locked or unlocked by a relative motion between the frame (20) and the slider (30). The guiding ring member (40) is detachably disposed on the cover (10), and has a guiding ring (41) and a positioning element (42) connected to the guiding ring (41). The webbing (2) is inserted through the guiding ring (41). The cover (10) is detachably hung on the guiding ring (41). The webbing adjustment device (1) can lock the webbing (2) automatically by the tension of the webbing (2).