Vehicle Seat Dynamic Damper with Separable Case Halves
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Solution Overview
Problem
Existing vehicle seat dynamic dampers are not economically adaptable for adjusting damping characteristics, as the housing forms a single unit, making it impossible to replace the weight and elastic member without replacing the entire damper, and require cumbersome special mounting tools.
Innovation Solution
A seat device with a dynamic damper featuring separable case halves, elastic linking claws and holes, and a mounting part that allows for easy adjustment and mounting without special tools, enabling the exchange of weight and elastic members to alter damping characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the housing is made into a single unit, then the structural integrity is improved, but the adaptability for adjusting damping characteristics deteriorates
Solution Approach 1:
The housing is divided into a first housing part and a second housing part that can be separated from each other. This segmentation allows the weight and elastic member to be accessed and replaced independently while maintaining structural integrity when assembled. The first and second housing parts form a complete housing when joined, providing structural stability, but can be separated to enable adjustment of damping characteristics by replacing the weight and/or elastic member.
2Ease of manufacture
If the housing is made into a single unit, then the manufacturing simplicity is improved, but the ease of repair deteriorates
Solution Approach 1:
The housing is segmented into separable first and second housing parts that can be joined together to form a complete housing. This segmentation enables easy repair and maintenance by allowing the housing to be opened for replacing the weight and elastic member, then closed again. The separable design maintains manufacturing simplicity while dramatically improving ease of repair and adjustment of damping characteristics.
3Device complexity
If no mounting part is provided on the housing, then the device complexity is reduced, but the ease of operation deteriorates
Solution Approach 1:
A mounting part is integrated into the housing structure, merging the mounting function with the existing housing components. This eliminates the need for separate mounting mechanisms or special mounting tools, reducing overall device complexity while significantly improving ease of operation during installation on the seat.
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
Facilitates economic adjustment of damping characteristics and simplifies the mounting process by allowing the dynamic damper to be easily disassembled and reassembled, enhancing versatility and user convenience.
Implementation Method 1
an elastic member that is disposed between the weight and an inner face of the damper chamber so as to allow vibration of the weight
Implementation Method 2
one and the other of the first and second case halves have formed thereon a plurality of pairs of elastic linking claws and linking holes that snap fit together to join the two case halves
Data Source
AI summary
A seat device for a vehicle includes a dynamic damper attached to a frame of a seat installed in the vehicle. The dynamic damper includes a damper case that is formed from separable first and second case halves, a weight that is housed in a damper chamber, and an elastic member that is disposed between the weight and the damper chamber so as to allow vibration of the weight. The damper case is provided with a plurality of mounting parts that are mounted on the frame, and the mounting parts comprise first and second mounting parts which are engaged with the frame at two left and right places as seen in a front view of the seat, and a third mounting part other than the first and second mounting parts which is provided between the first and second mounting parts.