Compact Vehicle Seat Belt System with Integrated Guide Rod
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Solution Overview
Problem
Existing safety belt systems in vehicles, particularly in coaches and buses, face issues with belt length incompatibility for varying passenger sizes and increased seat thickness due to the location of the recoil and restraint device, leading to comfort and safety concerns, and the need for sliding means that are costly and require maintenance.
Innovation Solution
A compact safety belt system with a guiding system featuring a curved vertical rod for height adjustment, where all components including the recoil and restraint device, deflection points, and anchor points are integrated on the same side of the seat-back, eliminating sliding means and optimizing belt length and friction, allowing for automatic height adjustment and easy installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the recoil and restraint device is located in the lower part of the seat-back, then the system structure is simplified, but the seat thickness increases and comfort is reduced
Solution Approach 1:
The invention relocates the recoil and restraint device from the lower part of the seat-back to the upper part, utilizing the vertical dimension of the seat-back structure. This dimensional repositioning allows the device to be integrated into the upper seat-back framework without increasing overall seat thickness, thereby maintaining passenger comfort while simplifying the guiding system structure.
Solution Approach 2:
The guiding system is segmented into distinct functional components: the first deflection point at the upper part of the seat-back, the second deflection point at the lower part, and the recoil and restraint device positioned at the upper part. This segmentation allows each component to be optimally positioned, reducing the need for excessive belt length and minimizing seat thickness while maintaining structural simplicity.
2Ease of operation
If sliding means are used for height adjustment, then automatic adjustment is achieved, but cost and maintenance requirements increase
Solution Approach 1:
The invention introduces a reel mechanism as an intermediary component that enables automatic height adjustment of the safety belt. The reel is guided by the first and second deflection points, allowing the belt to move vertically along a predetermined path. This intermediary mechanism achieves automatic adjustment functionality while being simpler and more cost-effective than traditional sliding means, with reduced maintenance requirements.
Solution Approach 2:
The height adjustment system is made dynamic through the reel mechanism that can freely rotate to accommodate belt movement. The system automatically adapts to different height requirements without requiring complex sliding structures, providing ease of operation while minimizing manufacturing cost and maintenance needs through its simple rotational dynamics.
3Adaptability or versatility
If the belt web is made longer to accommodate varying passenger sizes, then adaptability is improved, but belt twisting and blocking risk increases
Solution Approach 1:
The invention employs curved guiding paths for the belt web, with the first deflection point positioned at the upper part of the seat-back and the second at the lower part. This curved configuration allows the belt to naturally follow a smooth path that adapts to different passenger heights and body types, reducing the risk of twisting and blocking while maintaining adequate belt length for various occupant sizes.
Solution Approach 2:
The belt path is segmented into distinct sections guided by multiple deflection points, allowing each section to be optimized for its specific function. The first deflection point handles the upper diagonal portion, while the second manages the lower horizontal portion, enabling the belt to adapt to varying passenger dimensions without creating twisting hazards in any single section.
4Stability of the object's composition
If the guiding system components are distributed on opposite sides of the seat, then structural balance is achieved, but system complexity and installation difficulty increase
Solution Approach 1:
The invention merges multiple guiding system components onto the same side of the seat-back structure. The first deflection point, second deflection point, and recoil and restraint device are all positioned on one side, creating a compact integrated system. This merging reduces overall system complexity and simplifies installation while maintaining structural balance through careful positioning within the seat-back framework.
Data Source
Figure 1
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Figure 3~4A
AI summary
The present invention relates to a vehicle seat provided with safety belt system characterized by compact size and rapid installation, which can be preassembled and installed simultaneously with the framework of the seat-back.