Split Rear Backrest With Continuous Shaft
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Solution Overview
Problem
Existing split rear backrest designs for motor vehicles require an intermediate bracket for support, which complicates the design and production by varying in size and shape based on vehicle-specific features, necessitating a simpler and more universal solution.
Innovation Solution
A split rear backrest design that uses a continuous shaft and four fastening points to couple the backrests directly to the vehicle's side panels, eliminating the need for an intermediate bracket and allowing for universal application across different vehicle configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an intermediate bracket is used to support the backrests, then the backrests can be properly supported and positioned, but the design complexity increases and the bracket must be customized for each vehicle
Solution Approach 1:
The patent removes the intermediate bracket from the system entirely. Instead of supporting the backrests through a central bracket, the design directly couples each backrest unit to the vehicle body using fastening points, eliminating the complex intermediate supporting structure while maintaining backrest support functionality
Solution Approach 2:
The patent creates a universal mounting system where backrest units can be directly coupled to the vehicle body through standardized fastening points. This universal design eliminates the need for vehicle-specific bracket customization, allowing the same backrest unit to be installed in different vehicle configurations
2Ease of manufacture
If an intermediate bracket is used, then the backrests can be mounted, but the production consistency decreases due to varying sizes and shapes
Solution Approach 1:
The patent employs universal fastening points that can accommodate different vehicle configurations without requiring customized brackets. This standardization allows for consistent production processes across different vehicle models, improving productivity and manufacturing consistency
Solution Approach 2:
The backrest system is divided into independent units that can be manufactured separately and then coupled to the vehicle body. This segmentation allows each unit to be produced using standardized processes, enhancing production consistency while maintaining ease of assembly
3Ease of manufacture
If a continuous shaft is used to couple backrests to side panels, then the assembly process is simplified, but the structural complexity increases
Solution Approach 1:
The patent combines the coupling function into a single continuous shaft that connects both backrest units to the vehicle body. This merging of the coupling mechanism into one integrated component simplifies the assembly process by reducing the number of separate parts and connection steps
Data Source
AI summary
A split rear backrest is arranged between two side panels of a motor vehicle and has two backrests, which are provided with respective lower portions arranged side by side along a horizontal axis and are rotatable independently of each other about said horizontal axis; moreover, the backrest has a shaft, whose ends define respective fastening elements for being coupled to the side panels; the shaft has a segment axially protruding from one of the backrests and rotationally engaging a seat axially formed in the other backrest.