Sheet Handling Roller Thrust Regulation via Joint Claw
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Solution Overview
Problem
Existing sheet handling devices face issues with poor operability and instability due to the use of snap rings for thrust regulation, leading to difficulties in attaching or detaching components, potential loss of parts, and increased risk of paper jams caused by uneven wear and misalignment of rollers.
Innovation Solution
A thrust regulation structure using a joint member with a resin material and a regulation claw, which is press-fitted onto a metal roller attaching shaft, ensuring accurate positioning and easy detachment/attachment of rollers, reducing wear and enhancing operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If snap rings are used for thrust regulation, then the structure is simple, but the operability deteriorates due to difficulties in attaching or detaching components
Solution Approach 1:
The invention extracts the thrust regulation function from the traditional snap ring and transfers it to a claw integrated into the joint member. This allows the snap ring to be removed entirely, eliminating the attachment/detachment difficulties while maintaining structural simplicity. The claw is specifically designed to engage with the regulator, providing thrust regulation without requiring separate fastening components.
Solution Approach 2:
The invention merges the thrust regulation function with the joint member by integrating a claw into the joint member structure. This combination eliminates the need for separate snap rings and improves operability by reducing the number of parts that need to be attached and detached. The joint member with integrated claw provides both connection and thrust regulation in a single component.
2Device complexity
If snap rings are used for thrust regulation, then the structure is simple, but reliability deteriorates due to potential loss of parts and increased risk of paper jams
Solution Approach 1:
The invention merges the thrust regulation function with the joint member by integrating a claw into the joint member structure. This combination eliminates the need for separate snap rings and improves operability by reducing the number of parts that need to be attached and detached. The joint member with integrated claw provides both connection and thrust regulation in a single component.
Solution Approach 2:
The invention extracts the thrust regulation function from the traditional snap ring and transfers it to a claw integrated into the joint member. This allows the snap ring to be removed entirely, eliminating the attachment/detachment difficulties while maintaining structural simplicity. The claw is specifically designed to engage with the regulator, providing thrust regulation without requiring separate fastening components.
3Ease of manufacture
If traditional thrust regulation structures are used, then manufacturing is simple, but manufacturing precision deteriorates due to uneven wear and misalignment of rollers
Solution Approach 1:
The invention introduces a regulator as an intermediary component that mediates between the joint member and the roller assembly. The regulator includes a regulation surface that works with the claw to provide precise thrust regulation. This intermediary structure enables accurate roller positioning and reduces misalignment issues while maintaining manufacturing simplicity through standardized components.
Data Source
AI summary
A sheet handling device includes a shaft, a roller, and a joint. The roller is detachably attached on an end portion of the shaft. The joint is mounted on the end of the shaft and has a claw at a tip of the joint. The claw of the joint is configured to position the roller in a thrust direction along the shaft while an inner circumferential surface of the roller is in contact with an outer circumferential surface of the shaft. The inner circumferential surface of the roller has a cylindrical shape.