Sheet Conveying Apparatus Locking Mechanism for Easy Maintenance
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Solution Overview
Problem
Existing sheet conveying apparatuses require users to resist the urging force of a slide shaft when replacing the rotation member unit, making the attachment and detachment process cumbersome.
Innovation Solution
A sheet conveying apparatus with a rotation member unit that includes a conveyance rotation member, a holding member, a supporting shaft, a moving shaft, and a locking unit, allowing the rotation member unit to be moved to a position unsupported by the supporting shaft, where the moving shaft is locked at a second position, and held by an engaging portion, eliminating the need to resist the urging force of the slide shaft during attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the slide shaft is used to support the rotation member unit with urging force, then the rotation member unit is securely held, but the user must resist the urging force during attachment and detachment
Solution Approach 1:
The locking unit is activated in advance to lock the moving shaft at the second position before the user attaches or detaches the rotation member unit. This preliminary locking action eliminates the need for the user to resist the urging force of the slide shaft during the attachment and detachment operations, while still maintaining secure holding when the rotation member unit is in use.
2Ease of operation
If the moving shaft is locked at the second position, then the rotation member unit can be easily detached, but the rotation member unit may not be securely supported during operation
Solution Approach 1:
The moving shaft is designed to be movable between a first position (for secure support during operation) and a second position (for easy attachment and detachment). The locking unit dynamically locks the moving shaft at the second position only during attachment and detachment operations, while allowing it to be at the first position during normal operation to provide secure support.
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
Facilitates easier and more efficient attachment and detachment of the rotation member unit without needing to resist the urging force of the slide shaft, enhancing the user experience and reducing the complexity of the process.
Implementation Method 1
one end side of the rotation member unit is rotatably supported by a slide shaft urged by a spring toward the rotation member unit
Implementation Method 2
a locking unit configured to lock the moving shaft at the second position with respect to the sheet conveying apparatus
Implementation Method 3
a holding member including an engaging portion for engaging with an engaged portion provided to the sheet conveying apparatus and configured to hold the conveyance rotation member
Data Source
AI summary
A sheet conveying apparatus includes a rotation member unit, a supporting shaft and a moving shaft to support the rotation member unit, a locking unit to lock the moving shaft, and an engaged portion. The rotation member unit includes an engaging portion and a sheet conveyance rotation member held by the engaging portion. When the moving shaft is at a first position, the moving shaft and the supporting shaft support the rotation member unit. When the moving shaft is moved away from the supporting shaft to a second position at which the rotation member unit is not supported by the supporting shaft, the moving shaft is locked at the second position by the locking unit after moving from the first position to the second position, and the rotation member unit is held by the engaged portion in a state in which the engaging portion engages with the engaged portion.