Transfer Device Locking Lever Mechanism for Safe Detachment
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Solution Overview
Problem
Existing image forming apparatuses face challenges in safely separating the transfer device from the body and preventing friction between the sensing unit and the transfer device during detachment and installation.
Innovation Solution
The apparatus incorporates a locking lever system with a lever spring to securely detach the transfer device and a cam member to rotate the sensing unit, preventing friction by maintaining the sensing unit's position relative to the transfer device's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the transfer device is made detachable for easy maintenance and replacement, then the ease of operation is improved, but the reliability may deteriorate due to potential improper installation or accidental separation
Solution Approach 1:
The locking lever is pre-configured in a locked position that automatically engages with the locking protrusion when the transfer device is installed. The lever spring is pre-loaded to maintain the locking lever in the engaged position, ensuring automatic locking without requiring additional manual operations.
Solution Approach 2:
The locking mechanism is designed to automatically lock and unlock through the user's own actions. When the user pulls the transfer device for removal, the locking lever automatically disengages. When the user pushes the transfer device for installation, the locking lever automatically re-engages, making the system self-servicing.
2Device complexity
If the locking mechanism is simplified for ease of operation, then the device complexity is reduced, but the reliability of secure locking may worsen
Solution Approach 1:
The locking mechanism is segmented into distinct functional components: the locking lever for operation, the locking protrusion for engagement, and the lever spring for maintaining force. This segmentation allows each component to perform its specific function efficiently while keeping the overall structure simple.
Solution Approach 2:
The lever spring automatically maintains the locking lever in the engaged position without requiring additional actuators or complex control systems. The spring's elastic force continuously pushes the locking lever against the locking protrusion, providing reliable locking through self-service.
3Device complexity
If the sensing unit remains stationary during transfer device movement, then the device complexity is reduced, but friction between the sensing unit and transfer device increases
Solution Approach 1:
The sensing unit is designed with rotational freedom around a rotation axis, transforming it from a stationary component to a dynamic one. As the transfer device moves in and out, the sensing unit automatically rotates to maintain optimal positioning, reducing friction without requiring complex active control mechanisms.
4Ease of operation
If the locking lever is designed to protrude for easy engagement, then the ease of operation is improved, but the risk of accidental disengagement increases
Solution Approach 1:
The lever spring acts as a counterbalancing element that continuously applies force to keep the locking lever engaged with the locking protrusion. This elastic force counteracts any external forces that might cause accidental disengagement, while the protruding design of the locking lever remains accessible for intentional operation.
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
Enables safe separation of the transfer device and prevents friction between the sensing unit and the transfer device, ensuring smooth detachment and installation processes.
Implementation Method 1
a lever spring configured to elastically support the locking lever such that the locking lever is maintained at the first position
Data Source
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AI summary
An image forming apparatus including a body provided at one side thereof with an opening, a transfer device movably installed at the body so as to be detachable through the opening, and a locking lever rotatably installed at the transfer device, wherein the locking lever rotates between a first position at which one end of the locking lever protrudes from the transfer device and a second position at which the one end is accommodated within the transfer device, and the body includes a locking protrusion that is locked with other end of the locking lever in a state that the locking lever is at the first position, so that only in a state that a worker rotates the locking lever while gripping the transfer device, the transfer device is separated from the body, thereby separating the transfer device in a safe manner.