Rotational Force Driving Assembly Axis Offset Mechanism
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Solution Overview
Problem
The conventional rotational driving force receiver in electrophotographic image forming devices often experiences installation interference due to assembly errors, preventing normal engagement with the rotational driving force head, which hinders the proper installation of the process cartridge.
Innovation Solution
A rotational force driving assembly with an axis offset adjusting mechanism, comprising a hub, a rotational force receiving component, and a side plate, allows for parallel offset of the axis when not under external force, enabling coincident alignment with the hub axis upon installation, facilitating engagement with the rotational driving head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rotational driving force receiving head is pre-inclined relative to the photosensitive member axis, then the engagement process can accommodate assembly errors, but the receiving head may interfere with the rotational driving force head during installation
Solution Approach 1:
The receiving head is designed with dynamic adjustability, transitioning from a pre-inclined state during installation to a straightened coaxial state after engagement. The elastic component enables the receiving head to dynamically change its orientation, accommodating assembly errors while avoiding installation interference.
Solution Approach 2:
The orientation parameter of the receiving head is changed from an inclined angle during installation to a coaxial alignment after engagement. The elastic component facilitates this parameter change by allowing the receiving head to be pre-inclined for easy installation, then straightened into proper alignment through the engagement force.
2Manufacturing precision
If the rotational driving force receiving head is made straight during installation, then the alignment with the hub axis is improved, but assembly errors cause the receiving head to interfere with the rotational driving force head
Solution Approach 1:
The receiving head transitions from a dynamic inclined state during installation to a static coaxial state after engagement. This dynamic design allows the system to accommodate assembly errors by being inclined during installation, then achieving proper alignment through the straightening action during engagement.
Solution Approach 2:
The receiving head is pre-inclined before installation to anticipate and accommodate assembly errors. This preliminary inclination allows the receiving head to be installed without interference, and the proper coaxial alignment is achieved automatically through the engagement force that straightens the receiving head.
3Manufacturing precision
If the receiving head is designed with adjustment mechanism, then the axis alignment can be corrected, but the device complexity increases
Solution Approach 1:
The adjustment function is localized to the receiving head through a simple elastic component rather than a complex adjustment mechanism throughout the entire assembly. The elastic component provides the necessary flexibility and adjustment capability at the specific location where it is needed, maintaining overall structural simplicity.
Solution Approach 2:
The receiving head automatically adjusts its own alignment through the elastic component without requiring external adjustment mechanisms. The elastic component enables the receiving head to self-correct its orientation from inclined to coaxial alignment through the engagement force, eliminating the need for complex external adjustment devices.
Data Source
AI summary
The present invention relates to a rotational force driving assembly and a process cartridge used for being engaged with a rotational force driving head inside an electrophotographic image forming device. The rotational force driving assembly can comprise a hub, a rotational force receiving component, a side plate, and an axis offset adjusting mechanism. When the axis offset adjusting mechanism is not subjected to external force, the axis offset adjusting mechanism enables the axis of the rotational force receiving component to be parallel and offset to the axis of the hub. When the axis offset adjusting mechanism is subjected to external force, the rotational force receiving component extends out to be engaged with the rotational force driving head.