Elastic Detection Protrusion for Cartridge Wear Reduction
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Solution Overview
Problem
Existing developing cartridges face issues with wear and damage of detection protrusions due to excessive protrusion size, leading to contact and potential damage during installation and removal, which affects the accuracy of determining whether the cartridge is new or old.
Innovation Solution
A developing cartridge design featuring a detection protrusion made of an elastic material, positioned away from the rotational center, which abuts a cover and is elastically deformed at an initial position, reducing contact with other members and minimizing wear and damage during installation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the detection protrusion is made to protrude significantly from the rotational member, then the detection function is improved, but the wear and damage due to contact with other members increases
Solution Approach 1:
The detection protrusion is made of an elastic material, changing the physical parameter of the protrusion from rigid to flexible. This allows the protrusion to deform elastically during contact with the cover and other members, reducing wear and damage while maintaining detection functionality. The elastic property enables the protrusion to absorb impact forces and return to its original shape, preventing permanent deformation and damage.
2Measurement precision
If the detection protrusion protrudes from the rotational member, then the detection accuracy is improved, but the protrusion is more likely to contact and damage other members during installation and removal
Solution Approach 1:
The elastic material of the detection protrusion serves as a cushioning mechanism before contact with other members. When the protrusion contacts the cover or other members during installation and removal, the elastic material deforms to absorb the impact energy, preventing damage to both the protrusion and the contacted members. This beforehand cushioning effect is built into the material property itself.
Solution Approach 2:
By changing the material parameter from rigid to elastic, the protrusion can dynamically adjust its physical state during contact events. The elastic deformation allows the protrusion to maintain its detection function while reducing the harmful effects of contact during installation and removal operations.
3Measurement precision
If the detection protrusion is positioned away from the rotational center, then the detection functionality is improved, but the protrusion experiences greater wear during rotation
Solution Approach 1:
The elastic material parameter allows the protrusion to withstand the increased mechanical stress experienced during rotation at a position away from the rotational center. The elastic deformation capability absorbs the centrifugal and frictional forces, preventing material loss and wear that would occur with a rigid protrusion in the same position.
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 elastic detection protrusion effectively reduces wear and damage, ensuring accurate detection of new or old cartridges while maintaining the protrusion's functionality and longevity.
Implementation Method 1
the opposite part of the cover is configured to elastically deform the detection protrusion when the detection protrusion is positioned in a state in which the detection protrusion abuts the inside of the cover
Data Source
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AI summary
A cartridge which may include a housing, a driving input member provided at the housing and configured to be rotated by an externally supplied rotation driving force, and a rotational member configured to receive the rotation driving force, which is transmitted from the driving input member, and be rotated thereby. The cartridge may also include a detection protrusion including an elastic body and which is disposed at a position away from a rotational center of the rotational member. The detection protrusion may protrude from the rotational member away from the housing. The cartridge may also include a cover attached to the housing, the cover having an opposite part that faces a portion of the rotational member from which the detection protrusion protrudes. At an initial position, which is a position before the rotational member is rotated, the detection protrusion may abut the opposite part of the cover, wherein the opposite part of the cover is configured to elastically deform the detection protrusion when the detection protrusion is positioned in a state in which the detection protrusion abuts the inside of the cover.