Knitted Fabric Backrest Frame for Lightweight Replaceable Vehicle Seats
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Solution Overview
Problem
Existing vehicle seats in passenger transport vehicles face challenges in maximizing space utilization, accommodating a large number of passengers, managing weight and cost, and efficiently replacing wear parts due to intensive use and vandalism.
Innovation Solution
A vehicle seat design featuring a frame element with fastening elements and a knitted fabric that encloses the frame element, providing support and padding without additional elements, using a knitted fabric with complementary fastening elements for a secure, detachable connection, allowing for easy replacement and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vehicle seats with multiple support and padding elements are used, then comfort and stability are ensured, but weight and cost increase significantly
Solution Approach 1:
The invention extracts and removes unnecessary support and padding elements from conventional vehicle seats, retaining only the essential frame structure. The knitted fabric backrest replaces multiple separate support components, significantly reducing weight while maintaining the necessary comfort and stability functions.
Solution Approach 2:
The invention uses composite construction by combining a rigid frame element with a flexible knitted fabric backrest. This composite approach allows the fabric to provide both structural support and comfort functions that previously required separate rigid support elements, thereby reducing overall weight while maintaining reliability.
2Reliability
If conventional vehicle seats with multiple support and padding elements are used, then comfort and stability are ensured, but cost increases significantly
Solution Approach 1:
By removing unnecessary support and padding elements, the invention reduces the bill of materials and assembly complexity. The knitted fabric backrest consolidates multiple functions into a single component, reducing both material costs and manufacturing expenses while maintaining comfort and stability.
3Reliability
If conventional vehicle seats with securely attached covers are used, then durability is improved, but replacement time and cost increase due to complex attachment mechanisms
Solution Approach 1:
The invention segments the backrest into a frame element and a detachable knitted fabric cover. The fastening elements are designed to allow quick release and reattachment, enabling the cover to be replaced independently without removing the entire backrest assembly. This segmentation maintains durability through secure fastening while dramatically reducing replacement time.
Solution Approach 2:
The fastening system transitions from permanent or complex mechanical attachments to a dynamic, easily reversible connection mechanism. The fastening elements allow the cover to be quickly attached and detached multiple times, providing both secure durability during use and rapid replaceability when worn.
4Area of stationary object
If more passengers are accommodated in limited space, then space utilization is optimized, but weight per passenger decreases requiring lighter seat structures
Solution Approach 1:
The invention extracts unnecessary structural elements from conventional seats, creating a lighter backrest structure that reduces overall seat weight. This weight reduction allows for increased passenger capacity within limited vehicle space while maintaining adequate support for each passenger.
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
Vehicle seat (1) with a seat part (2) and a backrest part (3), wherein the backrest part has a frame element (4) enclosing an inner surface (13) and a knitted fabric (5) arranged on the frame element, wherein the frame element has at least one fastening element (41, 42) on at least two opposite inner surfaces (15a, 16a) and the knitted fabric has a complementary fastening element (23a, 24a) arranged on the rear side, wherein the knitted fabric is attached to the frame element by the fastening elements in such a way that the knitted fabric at least partially surrounds the frame element from the outside inwards, starting from a front of the frame element facing the seat part, and is essentially completely taut.