Vehicle Seat Vibration Proof Structure with Directional Resistance
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Solution Overview
Problem
Existing vibration proof structures for vehicle seats compromise seat rigidity, particularly at the rear side, due to the use of elastic members that absorb energy but fail to maintain high rigidity requirements.
Innovation Solution
A vibration proof structure for vehicle seats that includes a first and second member movable in specific directions, with restriction walls and resistance forces applied only in the forward direction to reduce vibrations while maintaining high rigidity in the rear direction by using disc springs and strategically positioned bolts and nuts to restrict movement in the rearward direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an elastic member is provided between the rod and the side frame to reduce vibrations, then vibration absorption is improved, but the rigidity of the seat deteriorates
Solution Approach 1:
The patent applies different structural characteristics to different regions of the seat frame. The front side frame includes a rod with an elastic member for vibration absorption, while the rear side frame maintains a rigid structure without elastic members. This local differentiation allows the front to be vibration-resistant while the rear maintains high rigidity, resolving the contradiction between vibration absorption and overall structural strength.
2Object-affected harmful factors
If an elastic member is arranged between components of the seat to reduce vibrations, then vibration absorption is improved, but the rigidity of the seat deteriorates
Solution Approach 1:
The patent implements vibration reduction measures only in the front side frame where the rod is provided, while maintaining a stable rigid structure in the rear side frame. This localized approach allows vibration absorption where needed without compromising the overall structural stability required for seat safety and support.
3Strength
If the seat requires the highest rigidity for the rear side, then structural strength is improved, but vibration proof performance deteriorates
Solution Approach 1:
The patent recognizes that different regions of the seat have different functional requirements. The rear side frame is designed with high rigidity for structural strength and stability, while the front side frame incorporates the rod and elastic member for vibration absorption. This spatial differentiation of structural properties allows each region to optimize its performance for its specific function.
Solution Approach 2:
The seat frame is segmented into front and rear portions with different structural characteristics. The front side frame contains the rod and elastic member assembly for vibration proofing, while the rear side frame maintains a simple rigid structure. This segmentation allows independent optimization of vibration protection and structural rigidity in different zones.
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 structure effectively reduces vibrations during forward movement and maintains high rigidity during rearward movement, ensuring the seat's stability and comfort by applying resistance forces only when necessary, thus enhancing the overall seating experience.
Implementation Method 1
a resistance force applying portion applying a resistance force to the first member moving in the first relative direction between the first restriction wall and the second restriction wall while not applying the resistance force to the first member moving in the second relative direction
Data Source
AI summary
A vibration proof structure of a seat apparatus for a vehicle, includes a first member and a second member movably arranged relative to each other in a first relative direction corresponding to a forward movement of a seat element in a front and rear direction of the vehicle and in a second relative direction corresponding to a rearward movement of the seat element in the front and rear direction, a first restriction wall restricting a relative movement of the first member to the second member in the first relative direction, a second restriction wall restricting the relative movement of the first member to the second member in the second relative direction, and a resistance force applying portion applying a resistance force to the first member moving in the first relative direction while not applying the resistance force to the first member moving in the second relative direction.