Damper Pin Attachment Structure for Axial and Radial Rattle Suppression
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Solution Overview
Problem
Existing damper devices fail to suppress rattling in both the axial and radial directions due to manufacturing errors in the position of the pin member, leading to unwanted movement between the attachment portion and the pin member.
Innovation Solution
A damper device with a cylinder and piston system, where the attachment portions include elastic portions that urge the pin member in both axial and radial directions, utilizing axial and radial abutment portions to stabilize the pin member, thereby reducing rattling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the pin member position deviates due to manufacturing error, then rattling occurs, but manufacturing precision cannot be improved
Solution Approach 1:
The elastic portion and abutment portions are designed in advance to compensate for potential manufacturing errors and position deviations of the pin member, providing preemptive cushioning that suppresses rattling even when manufacturing precision varies within acceptable ranges
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 damper device effectively suppresses rattling in both axial and radial directions, enhancing the stability and responsiveness of the damper system by applying damping forces during the operation of opening and closing bodies.
Implementation Method 1
The elastic portion includes an axial abutment portion which abuts on a large-diameter portion of the pin member protruding radially outward from an outer peripheral surface of the pin member, and a radial abutment portion which abuts on the outer peripheral surface of the pin member
Data Source
AI summary
A damper device includes a cylinder including an attachment portion and a piston including an attachment portion. The attachment portion of at least one of the cylinder and the piston includes an elastic portion which urges a pin member inserted therein in an axial direction and a radial direction. The elastic portion includes an axial abutment portion which abuts on a large-diameter portion of the pin member protruding radially outward from an outer peripheral surface of the pin member; and a radial abutment portion which abuts on the outer peripheral surface of the pin member.