Seat Attachment Device Evasive Movement Mechanism
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Solution Overview
Problem
Existing seat mounting devices do not adequately address the need for improved comfort and safety by preventing collisions between objects and seat surfaces, while also requiring multiple operating forces for movement and storage.
Innovation Solution
A seat attachment device with a support arm unit featuring an evasive movement unit that allows the second support arm element to pivot relative to the first support arm element, enabling a single operating force to generate a deflection angle and prevent collisions, with a cam gear unit or link gear unit coupling the movement, and a guide element for controlled guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a rigid connection between first and second support arm elements is used, then structural simplicity is maintained, but collision with seat surface cannot be prevented and comfort is reduced
Solution Approach 1:
The patent applies the dynamics principle by introducing an evasive movement unit that enables the second support arm element to perform evasive movements relative to the first support arm element. This dynamic capability allows the support arm unit to automatically avoid collisions with the seat surface during operation, transforming a static rigid structure into a dynamic adaptive structure that responds to spatial constraints.
Solution Approach 2:
The evasive movement unit acts as an intermediary mechanism between the first and second support arm elements. It mediates the movement transmission while introducing the necessary degrees of freedom for evasive action, allowing the system to maintain structural integrity while avoiding direct rigid contact that would cause collision.
2Ease of operation
If multiple operating forces are applied to move and store the support arm unit, then precise control is achieved, but ease of operation is reduced
Solution Approach 1:
The patent merges the control functions into a single operating force application point. The evasive movement unit is designed so that one operating force applied to the support arm unit simultaneously controls both the primary movement and the evasive movements, combining multiple control functions into a unified operation that simplifies user interaction.
Solution Approach 2:
The single operating force serves multiple functions: it moves the support arm unit between stowed and extended positions, controls the evasive movements for collision avoidance, and maintains structural stability. This multi-functionality eliminates the need for separate control forces for different operations.
3Volume of moving object
If the support arm unit is made longer to accommodate large objects, then storage capacity is improved, but stability and control become more difficult
Solution Approach 1:
The extended support arm unit maintains stability through dynamic evasive movements enabled by the evasive movement unit. Rather than relying solely on rigid structural stability, the system uses controlled dynamic adjustments to maintain balance and prevent collision, allowing longer arm configurations to remain stable during operation.
Solution Approach 2:
The evasive movement unit changes the movement parameters of the second support arm element, introducing angular deviations and positional adjustments that maintain stability despite the increased length. These parameter changes allow the system to adapt its trajectory and avoid positions that would compromise stability.
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a seat attachment device (10) with at least one support arm unit (12), having at least a first support arm element (14), at least a second support arm element (16) and at least one hinge unit (18), provided to mount the first support arm element (14) pivotably about at least one hinge axis (20). According to the invention, the support arm unit (12) has at least one evasive motion unit (22), provided to generate an evasive movement of the second support arm element (16) relative to the first support arm element (14), coupling the first support arm element (14) and the second support arm element (16) together kinematically.