Seat Damper Ball Joint Misalignment Tolerance
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Solution Overview
Problem
Conventional seat damper systems for two-wheeled vehicles require precise alignment of mounting parts to function correctly, which is challenging and reduces production efficiency, and they lack flexibility to accommodate misalignment, potentially inhibiting smooth stroke motion and driver control.
Innovation Solution
A seat damper design featuring a resilient member with a rod that includes a joint for pivotable coupling to the seat-side bearing plate and a locking portion for the vehicle body-side bearing plate, along with a ring-like rod guide with an arcuate cross-section, allowing the rod to tilt and accommodate misalignment, ensuring easy mounting and smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the seat damper is coupled by inserting pins between itself and the seat bracket or the mounting part of the vehicle body, then the seat damper can be attached to the seat bracket and mounting part, but if the seat bracket and the mounting part are not on the same plane, the pin cannot be inserted into both, requiring high positioning accuracy which reduces production efficiency
Solution Approach 1:
The patent changes the mounting mechanism from rigid pin insertion to a ball joint connection that allows angular adjustment. The ball joint enables the seat damper to accommodate misalignment between the seat bracket and vehicle body mounting part by rotating to match their relative positions, eliminating the need for high positioning accuracy while maintaining secure attachment
Solution Approach 2:
The patent introduces a dynamic adjustment capability through the ball joint mechanism. Instead of a fixed rigid connection, the ball joint allows the seat damper to dynamically adapt its orientation to match the relative positions of the seat bracket and vehicle body mounting part, enabling easy installation without precise alignment while maintaining operational reliability
2Stability of the object's composition
If the seat bracket and the mounting part of the vehicle body require sufficient rigidity to keep the seat damper fixedly in position, then the stroke motion direction can be maintained constant, but the positioning accuracy requirement increases which impedes production efficiency improvement
Solution Approach 1:
The patent replaces the static rigid positioning requirement with a dynamic ball joint mechanism that provides stability through controlled movement. The ball joint allows the seat damper to achieve a stable operational position while accommodating initial misalignment, maintaining stroke motion stability without requiring high positioning accuracy during assembly
Solution Approach 2:
The patent changes the mounting interface from a rigid fixed-position connection to a flexible ball joint connection that permits angular adjustment. This parameter change allows the system to maintain stroke motion stability through the self-aligning capability of the ball joint while eliminating the need for precise positioning during production
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 design allows for easy attachment and smooth operation of the seat damper even with misaligned mounting parts, enhancing production efficiency and maintaining driver control by enabling the seat damper to move freely without requiring precise alignment.
Implementation Method 1
a compression spring, which resiliently supports a load applied between the vehicle body and the seat
Implementation Method 2
a resilient member interposed between a vehicle body and a seat and resiliently supporting a load applied between the vehicle body and the seat
Data Source
AI summary
A seat damper attached between a vehicle body and a seat in a seat suspension structure. The seat damper capable of allowing misalignment of mounting positions of mounting parts between the vehicle body side and the seat side, and being configured with reduced rigidity. The seat damper includes: a resilient member interposed between a vehicle body and a seat, supporting a load applied thereto; a seat-side bearing plate and a vehicle body-side bearing plate sandwiching the resilient member; a rod including a joint for pivotably coupling the rod to the seat-side bearing plate and a locking portion at the other end locking the rod to a lower face of the vehicle body-side bearing plate, with this joint being received in and locked to the seat-side bearing plate; and a ring-like rod guide provided to the vehicle body-side bearing plate for the rod to pass through.