Concentric Pivot View Angle Adjustment Vibration Suppression
Solution Overview
Problem
Conventional view angle adjustment mechanisms using concentric pivots for mirror or camera devices suffer from inadequate vibration suppression due to non-uniform support caused by poor dimension accuracy of inner pivots, leading to insufficient vibration control.
Innovation Solution
The mechanism employs an inner pivot assembled by forcible fitting using elasticity, with an outer pivot featuring elastic pieces on its surface for uniform support, allowing elastic deformation to correct biases and enhance vibration suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inner pivot is assembled by screw fastening, then the mirror tilting section is firmly fixed, but the support becomes non-uniform in circumferential direction due to poor dimension accuracy, reducing vibration suppression effect
Solution Approach 1:
The patent changes the assembly method from screw fastening to forcible fitting, utilizing elastic deformation of the inner pivot to achieve uniform circumferential support. The elastic material allows the pivot to deform during assembly and then recover, ensuring even distribution of support forces around the circumference, which directly addresses the non-uniform support problem caused by dimensional inaccuracies.
Solution Approach 2:
The patent employs elastic material for the inner pivot, combining rigidity for structural support with elasticity for uniform deformation during assembly. This composite property allows the pivot to maintain firm fixation while accommodating dimensional variations through elastic recovery, resolving the contradiction between firmness and manufacturing precision requirements.
2Ease of manufacture
If the inner pivot has poor dimension accuracy, then assembly is easier, but the support of outer pivot becomes non-uniform, insufficiently suppressing vibration
Solution Approach 1:
The patent utilizes the elastic property of the inner pivot material, allowing it to deform during assembly even with dimensional variations, and then recover to provide uniform support. This elastic deformation capability enables easier assembly with less stringent dimensional tolerances while maintaining effective vibration suppression through uniform circumferential support.
3Manufacturing precision
If elastic pieces are added to the outer pivot, then uniform support is achieved, but the device complexity increases
Solution Approach 1:
The patent adds elastic pieces only at specific locations on the outer pivot that contact the inner pivot, rather than modifying the entire structure. This localized application of elastic components achieves uniform circumferential support while minimizing the increase in overall device complexity. The elastic pieces are strategically positioned to address the non-uniform support issue without requiring comprehensive structural redesign.
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
This configuration provides enhanced vibration suppression by ensuring uniform support and reducing slide resistance, effectively mitigating chatter vibrations in mirror or camera devices.
Implementation Method 1
the inner pivot is assembled by forcible fitting using elasticity of either or both of a pivot convex and a pivot concave without screw fastening
Implementation Method 2
the outer pivot includes a plurality of elastic pieces disposed at a plurality of positions in a circumferential direction of a curved surface of either or each of an outer-pivot convex surface and an outer-pivot concave surface; and the outer pivot is assembled by the forcible fitting in the inner pivot and the plurality of elastic pieces elastically abut on an opposed curved surface
Data Source
AI summary
This invention relates to a view angle adjustment mechanism that causes a view element tilting section holding a view element to be supported by a tilting support section via a plurality of concentric pivots having different diameters, to perform view angle adjustment. An inner pivot is assembled by forcible fitting using elasticity of either or both of a pivot convex and a pivot concave without screw fastening. An outer pivot includes a plurality of elastic pieces disposed at a plurality of positions in a circumferential direction of a curved surface of either or each of both of an outer-pivot convex surface and an outer-pivot concave surface. The outer pivot is assembled by the forcible fitting in the inner pivot. The assembly causes the plurality of elastic pieces to elastically abut on an opposed curved surface.