Vehicle Seat Rotation Catching Unit with Progressive Spring Stiffness
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Solution Overview
Problem
Existing vehicle seat rotating devices lack effective mechanisms to prevent the seat part carrier from tearing apart from the base component during crashes while also minimizing noise and maximizing natural frequency.
Innovation Solution
Incorporating a catching unit with an insertion element and a receiving element, where the receiving element features spring elements that maintain constant stiffness initially but significantly increase with deformation, providing enhanced crash protection, reduced noise, and increased natural frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rigid connection elements are used to prevent detachment during crashes, then crash protection is improved, but noise increases and natural frequency decreases
Solution Approach 1:
The patent changes the mechanical parameters of the connection system by using spring elements with specific stiffness characteristics. The spring elements are designed to have low stiffness during normal operation (reducing noise and increasing natural frequency) and high stiffness during crash events (providing crash protection). This parameter change allows the system to adapt its mechanical properties based on the operational state.
Solution Approach 2:
The patent introduces dynamic behavior into the connection system through spring elements that can deform and absorb energy. Unlike rigid connections, the spring elements dynamically respond to applied forces, allowing the system to adapt to different loading conditions. The spring elements remain elastic during normal vibration but provide progressive resistance during crash events.
2Reliability
If rigid connection elements are used to prevent detachment during crashes, then crash protection is improved, but natural frequency decreases
Solution Approach 1:
The patent changes the mechanical parameters of the connection system by using spring elements with specific stiffness characteristics. The spring elements are designed to have low stiffness during normal operation (reducing noise and increasing natural frequency) and high stiffness during crash events (providing crash protection). This parameter change allows the system to adapt its mechanical properties based on the operational state.
Solution Approach 2:
The patent introduces dynamic behavior into the connection system through spring elements that can deform and absorb energy. Unlike rigid connections, the spring elements dynamically respond to applied forces, allowing the system to adapt to different loading conditions. The spring elements remain elastic during normal vibration but provide progressive resistance during crash events.
3Ease of operation
If spring elements with constant stiffness are used, then ease of insertion is improved, but crash protection is insufficient
Solution Approach 1:
The patent changes the mechanical parameters of the connection system by using spring elements with specific stiffness characteristics. The spring elements are designed to have low stiffness during normal operation (reducing noise and increasing natural frequency) and high stiffness during crash events (providing crash protection). This parameter change allows the system to adapt its mechanical properties based on the operational state.
Solution Approach 2:
The patent introduces dynamic behavior into the connection system through spring elements that can deform and absorb energy. Unlike rigid connections, the spring elements dynamically respond to applied forces, allowing the system to adapt to different loading conditions. The spring elements remain elastic during normal vibration but provide progressive resistance during crash events.
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 solution effectively prevents the seat part carrier from detaching during crashes, reduces noise, and enhances the natural frequency of the vehicle seat by utilizing spring elements that provide minimal resistance initially but increase stiffness with deformation, effectively dampening vibrations.
Implementation Method 1
the receiving element (26) has at least one spring element (40) which undergoes a deformation through contact with the inserted insertion element (24)
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a vehicle seat (1) with a turning device (10), comprising a base part (14), a seat part support (16) rotatable relative to the base part about an axis of rotation (12) and at least one catching device (20) for preventing the seat part support (16) from being ripped out of the base part (14) in the event of a crash. The catching device (20) comprises an insertion element (24) and a receiving element (26) into which the insertion element (24) can be inserted, and the receiving element (26) has at least one spring element (40) which undergoes a deformation by contact with the inserted insertion element (24), wherein the spring element (40) is designed such that,when the insertion element (24) is inserted, the spring resistance of the spring element is approximately the same as when the insertion element (24) is not inserted, and that the spring resistance of the spring element increases upon a further deformation by the insertion element (24).