Vehicle Seatback Frame with Inclined Cross Member
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Solution Overview
Problem
Conventional seatback frame structures for vehicles face issues with low frame compatibility, increased manufacturing costs and weight due to additional components, and safety concerns in head-on collisions, along with reduced design freedom and productivity.
Innovation Solution
A seatback frame structure featuring a pair of side brackets with an upper cross member having inclined and curved surfaces, allowing height adjustment and rounding of the seatback, eliminating the need for additional side brackets and reducing components by integrating the pole guide directly into the upper cross member, while providing enhanced safety features and increased working space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple upper cross member shape is used, then manufacturing cost is reduced, but frame compatibility between different vehicle types deteriorates
Solution Approach 1:
The upper cross member incorporates an adjustable mechanism that allows its effective length and configuration to be dynamically changed. This enables a single standardized component design to adapt to different vehicle types and seatback height requirements, resolving the contradiction between manufacturing simplicity and frame compatibility.
Solution Approach 2:
The invention changes key parameters of the upper cross member including its length, positioning, and angular orientation. By allowing these parameters to be adjusted, the same basic component can serve multiple vehicle configurations, maintaining manufacturing simplicity while achieving universal compatibility.
2Reliability
If additional components like pole guide tubes are used, then structural reliability is improved, but manufacturing cost and weight increase
Solution Approach 1:
The invention merges the pole guide function directly into the upper cross member structure itself, eliminating the need for separate pole guide tubes. This integration maintains the necessary structural reliability while reducing the number of components, thereby lowering manufacturing cost and weight.
Solution Approach 2:
The upper cross member is designed to perform multiple functions simultaneously: it provides structural support, serves as a mounting structure for the headrest, and acts as a pole guide. This multi-functionality eliminates the need for additional dedicated components, reducing complexity and cost while maintaining reliability.
3Reliability
If additional components are used, then structural reliability is improved, but device complexity increases
Solution Approach 1:
The invention combines multiple structural functions into the upper cross member itself, including headrest support, pole guidance, and positioning functions. This consolidation reduces the total number of components from multiple separate parts to an integrated structure, simplifying the overall device while maintaining structural integrity.
4Object-affected harmful factors
If the upper cross member edge is bent downwards for safety, then passenger safety is improved, but working space and productivity deteriorate
Solution Approach 1:
The invention resolves the space conflict by utilizing the vertical dimension and angular orientation of the upper cross member. The member is positioned at a specific angle that provides adequate vertical clearance for passenger safety while maintaining sufficient horizontal working space for assembly operations, effectively using three-dimensional space optimization.
Data Source
AI summary
A seatback frame structure is provided for the manufacture of a seat of a vehicle. The seatback frame structure includes a pair of side brackets and an upper cross member. The side brackets are coupled at lower ends thereof to left and right sides of a seat frame. The upper cross member is transversely mounted between the upper ends of the side brackets, and a headrest is placed on the upper portion of the upper cross member. Each of opposite ends of the upper cross member comprises a downwardly inclined surface, and is coupled to the upper end of a corresponding side bracket.