Airbag Small Bag Joining for Passenger Restraint
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Solution Overview
Problem
Existing airbag apparatuses have complex structures that fail to accommodate passengers or objects of varying sizes effectively, leading to inefficient restraint and increased manufacturing costs.
Innovation Solution
An airbag apparatus comprising a main bag with a small bag extending from its opening portion, featuring joined portions along the top, rear, or left and right surfaces, allowing for a simple structure that restricts stretching and forms groove portions for enhanced friction and energy absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If four base fabrics are sewn together to define a recess for restraining a passenger, then the passenger restraint function is improved, but the airbag structure becomes complex and cannot accommodate objects or passengers of varying sizes
Solution Approach 1:
The airbag is divided into two functional segments: a main bag for passenger restraint and a small bag for receiving objects. This segmentation allows each part to perform its specific function independently, simplifying the overall structure while maintaining effectiveness for both passengers and objects of varying sizes.
Solution Approach 2:
The airbag apparatus is designed to serve multiple functions: the main bag restrains passengers while the small bag receives objects such as child safety seats. This multi-functionality allows a single simplified structure to accommodate both passengers and objects of varying sizes effectively.
2Strength
If multiple fabrics are sewn together to form a complex airbag shape, then the passenger restraint capability is enhanced, but the manufacturing cost and structural complexity increase
Solution Approach 1:
The airbag is segmented into a main bag and a small bag that can be manufactured separately and then assembled. This reduces the complexity of fabric cutting and sewing operations, as each component can be produced using simpler patterns and processes, thereby lowering manufacturing costs while maintaining restraint capability.
Solution Approach 2:
The small bag is positioned within the main bag structure, with the small bag extending from the opening portion into the main bag. This nested arrangement allows both components to work together in a compact configuration, reducing the total material required and simplifying the overall manufacturing process.
3Stability of the object's composition
If a strap is sewn to both fabrics and the airbag to keep the pocket shape, then the pocket shape stability is improved, but the number of components increases
Solution Approach 1:
The small bag serves as both the pocket structure and the shape-stabilizing element, eliminating the need for a separate strap component. The small bag is joined to the main bag at specific locations to maintain the pocket shape, thereby reducing the total number of components while preserving shape stability.
Solution Approach 2:
The small bag performs multiple functions: it forms the pocket structure, maintains the pocket shape through its joined portion, and provides a receiving space for objects. This multi-functionality eliminates the need for additional components like straps, simplifying the overall device structure.
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 airbag apparatus provides efficient passenger restraint with reduced load application, utilizing a simple structure that can accommodate various sizes and builds, while minimizing manufacturing costs and optimizing energy absorption.
Implementation Method 1
an inflator for generating gas to deploy the airbag
Implementation Method 2
the small bag with the joined portion of predetermined length joined to the main bag restricts stretching of a portion of the airbag when the airbag is deployed, such that the portion of the airbag is bent inwardly to form a groove portion
Implementation Method 3
the airbag having the joined portion along a top, rear, or left and right surfaces thereof when the airbag is deployed, the top surface, the rear surface, or the left and right surfaces having groove portions bent toward the small bag
Data Source
AI summary
An airbag provided with a pocket. An airbag (21) comprises a main bag body (31), an opening (32) formed in the main bag body (31), a small bag body (33) extending from the opening (32) to the inside of the main bag body, and a joining section (34) at which a part of the small bag body is joined to the main bag body. The joining section (34) is provided in the area which, when the airbag is expanded, extends from both the side surfaces of the airbag or from the top surface (72) of the airbag to the rear surface (73) which comes in contact with and holds the occupant.