Lens Barrel Rotation Regulator Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rotation regulating devices for rotating rings in lens barrels face challenges with dimensional accuracy and space arrangement due to the displacement of rotation regulators held on shafts spaced apart in the circumferential direction, leading to reduced accuracy and increased space requirements.
Innovation Solution
A rotation regulating device with a holder that includes a holding shaft and rotation stoppers to securely position the elastic rotation regulator, featuring a fitter and contact stoppers to prevent rotation about the holding shaft, allowing for precise placement and reduced length, thereby improving dimensional accuracy and minimizing space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rotation regulator is held on two shafts formed at a distance from each other in the circumferential direction, then the rotation regulator can contact and stop the rotating ring in both rotation directions, but the rotation regulator is easily displaced from the set position and it is difficult to arrange the rotation regulator at the set position
Solution Approach 1:
The holder is divided into a body portion and a protruding portion that extends in the circumferential direction. The rotation regulator is held between these two segmented parts, which provides stable positioning without requiring two separate shafts spaced apart. This segmentation allows the rotation regulator to be securely held at the set position while maintaining the ability to contact and stop the rotating ring in both rotation directions.
2Reliability
If the rotation regulator is held on two shafts formed at a distance from each other, then the rotation regulator can regulate rotation in both directions, but the length of the rotation regulator in the circumferential direction becomes long
Solution Approach 1:
Instead of arranging the holding structure in the circumferential direction (horizontal dimension), the invention uses a holder body with a protruding portion that extends radially or axially. The rotation regulator is held between the holder body and protruding portion, effectively changing the holding dimension from circumferential to radial/axial, thereby reducing the circumferential length of the rotation regulator while maintaining bidirectional rotation regulation capability.
3Reliability
If the rotation regulator is held on two shafts spaced apart, then rotation can be regulated in both directions, but the arrangement space for the rotation regulator becomes larger
Solution Approach 1:
The holder body and protruding portion are integrated into a single holder component rather than using two separate shafts. This merging of the holding structure reduces the total arrangement space required for the rotation regulator while maintaining the capability to contact and stop the rotating ring in both rotation directions. The protruding portion is formed as an integral part of the holder body, eliminating the need for separate mounting structures.
4Reliability
If the rotation regulator is held on two shafts at a distance, then bidirectional rotation stopping is achieved, but the dimensional accuracy of the rotation regulator is reduced
Solution Approach 1:
The holder provides localized support to the rotation regulator at the protruding portion, creating a concentrated holding point rather than distributing the holding function across two spaced shafts. This localized holding improves the dimensional accuracy of the rotation regulator by reducing the span over which manufacturing errors can accumulate, while still enabling bidirectional rotation regulation through the geometric arrangement of the holder and rotating ring contact points.
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 solution enables easy arrangement of the rotation regulator at a set position, enhances dimensional accuracy, and reduces the risk of deformation and breakage, while allowing for a more compact design by distributing moments effectively across the width of the rotation regulator.
Implementation Method 1
The rotation regulator is held on the holder and is formed of an elastic body
Data Source
AI summary
A rotation regulating device and a lens barrel includes a rotating ring, a holder that rotatably holds the rotating ring, a rotation regulator that regulates the rotation of the rotating ring by contacting and stopping the rotating ring, and a receiver that receives a part of the rotation regulator. The rotation regulator is held on the holder and formed of an elastic body. The holder includes a holding shaft that holds the rotation regulator and a rotation stopper that stops the rotation regulator to prevent the rotation regulator from rotating about the holding shaft.