Detachable Unit Latch Mechanism for Image Forming Apparatus
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Solution Overview
Problem
Existing image forming apparatuses face challenges in efficiently and conveniently attaching and detaching consumable units, such as toner containers, which complicates the process of exchanging or refilling them during operation.
Innovation Solution
A detachable unit with a grip part and latch portions that securely attach to the image forming apparatus body, allowing for easy detachment by pulling out the grip part, which withdraws the latch portions from their latched positions, facilitating the removal and replacement of consumable units like toner containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a latch mechanism is used to securely attach the detachable unit, then the reliability of attachment is improved, but the ease of operation for detachment deteriorates
Solution Approach 1:
The latch portion is designed as a movable component that can dynamically switch between latched and unlatched states. The elastic member (spring) provides dynamic response to attachment and detachment forces, allowing the latch to automatically engage during attachment and disengage during detachment, resolving the contradiction between secure attachment and easy detachment.
Solution Approach 2:
The latch mechanism is designed to automatically engage and disengage without requiring manual intervention. During attachment, the latch portion automatically latches into the latched portion. During detachment, pulling the grip part automatically triggers the latch to release, making the system self-serving and improving ease of operation while maintaining reliability.
2Stability of the object's composition
If the detachable unit is securely latched, then the stability of attachment is improved, but the force required for detachment increases
Solution Approach 1:
The elastic member (spring) introduces dynamic characteristics to the latch mechanism. During attachment, the spring compresses to provide stable latching. During detachment, the spring expands to assist in releasing the latch, reducing the force required by the user while maintaining attachment stability during normal operation.
Solution Approach 2:
The elastic member acts as an intermediary between the latch portion and the external force. It stores energy during attachment and releases it during detachment, mediating the force transmission and reducing the peak force required for detachment while maintaining stable attachment during use.
3Ease of operation
If the latch mechanism is simplified for easy operation, then the ease of operation is improved, but the reliability of attachment deteriorates
Solution Approach 1:
The latch mechanism is segmented into distinct functional components: the latch portion, the elastic member, and the grip part. This segmentation allows each component to perform its specific function efficiently - the latch provides secure engagement, the spring provides automatic engagement/disengagement, and the grip provides user interaction - maintaining reliability while improving ease of operation through simple pull-to-release action.
Data Source
AI summary
A detachable unit includes a detachable unit body to be attached to an image forming apparatus body such as to be detachable in a predetermined detachment direction, a grip part provided in the detachable unit body, and a latch portion provided in the detachable unit body, the latch portion being latched in a latched portion provided in the image forming apparatus body to restrict detachment of the detachable unit body from the image forming apparatus body in a state in which the detachable unit body is attached to the image forming apparatus body, and withdrawing from a latch position in the latched portion in conjunction with a pull-out operation of pulling out the grip part from the detachable unit body in the detachment direction.