Webbing Device Tube Positioning for Seatbelt Inflation
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Solution Overview
Problem
Existing vehicle safety belt systems face limitations in fluid supply due to tube compression when the seat or passenger interferes with the webbing, restricting the inflation of the bag body.
Innovation Solution
A webbing device with a supporting member on one side of the seat, a supplying portion positioned to avoid interference, and a bag body that receives fluid from the supplying portion, ensuring uninterrupted fluid supply and inflation even when the webbing is compressed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the tube is provided within the belt webbing, then the structure is compact and integrated, but the tube may be crushed by the seat or passenger interference, limiting fluid supply
Solution Approach 1:
The supplying portion is extracted from the webbing structure and positioned separately at the other side of the webbing, away from the interference zone. This separation allows the tube to be positioned where it won't be crushed by the seat or passenger, ensuring reliable fluid supply while maintaining structural integration through the supporting member connection.
Solution Approach 2:
The supplying portion is positioned in a different spatial dimension (at the other side of the webbing in the thickness direction) relative to the interference zone. This dimensional relocation places the tube in a safe zone where it won't be compressed, resolving the contradiction between compact structure and reliable fluid supply.
2Device complexity
If the supplying portion is positioned at the interference zone, then the structure is compact, but the fluid supply is limited due to compression
Solution Approach 1:
The supplying portion is extracted from the interference zone and repositioned at the other side of the webbing. This extraction maintains structural compactness through the supporting member while eliminating compression issues that would limit fluid supply efficiency.
Solution Approach 2:
The supporting member acts as an intermediary element that connects the supplying portion to the webbing structure. It provides mechanical support to prevent compression while maintaining the compact integrated structure, thus preserving both compactness and fluid supply efficiency.
3Device complexity
If the tube is crushed by the seat or passenger, then the webbing structure remains simple, but the bag body inflation is limited
Solution Approach 1:
The supplying portion is extracted from the compression zone and positioned at the other side of the webbing. This simple repositioning prevents tube crushing while maintaining webbing structure simplicity, ensuring adequate fluid supply quantity for bag body inflation.
Solution Approach 2:
The supporting member is positioned in advance to support the webbing at the supplying portion location before any compression occurs. This preliminary support action prevents tube crushing and ensures sufficient fluid supply quantity throughout operation.
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 solution prevents fluid supply limitations by positioning the supplying portion to avoid compression, allowing effective inflation of the bag body and enhanced passenger protection during emergencies.
Implementation Method 1
a supporting member that is disposed at a side of another side portion of the seat, and that supports another side in the thickness direction of the webbing
Implementation Method 2
a supplying portion that is disposed at the other side of the webbing... and that is disposed at the one side of the webbing at a supporting position at which the webbing is supported by the supporting member, a fluid being supplied to an interior of the supplying portion; and a bag body that is provided at the webbing, and that has an interior to which fluid, that has been supplied to the interior of the supplying portion, is supplied, and that is inflated
Data Source
AI summary
In a seatbelt device, at a time of an emergency of a vehicle, gas is supplied via a tube interior into a chest bag, and the chest bag is inflated and expanded. Here, the tube is disposed at a thickness direction one side of a webbing at positions at which a lap webbing, at a thickness direction other side thereof, is interfered with by a seat cushion and a passenger. Therefore, the tube being crushed by the seat cushion and the passenger, and the lap webbing, can be suppressed, and supplying of gas via the tube interior into the chest bag being limited can be suppressed.