Roller Structure With Elastic Support for Paper Transport
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Solution Overview
Problem
Conventional paper transportation mechanisms in multifunction machines suffer from deformation of the frame body due to pressing forces, leading to inadequate contact between rubber driving wheels and idler wheels, resulting in paper jams and inefficient paper transport.
Innovation Solution
A roller structure with adjustable roller units, each comprising a base, an elastic portion, a supporting portion, and a rotating wheel, allowing for adjustable positioning and uniform reception of pressing forces, thereby ensuring effective rotation and stable paper transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an external elastic piece is used to provide elastic force to the idler wheel, then the idler wheel can be pushed to tightly abut against the rubber driving wheel, but the frame body deforms and bends due to pressing and engaging force
Solution Approach 1:
The patent divides the frame body into multiple independent support structures, each supporting an idler wheel assembly. This segmentation allows each support to independently bear the pressing force without causing cumulative deformation to the entire frame body, thus maintaining frame stability while ensuring adequate wheel contact force.
Solution Approach 2:
The patent introduces elastic elements specifically at the locations where idler wheels contact the frame body, making these local areas flexible and adaptable. This localized elasticity allows the frame to absorb pressing forces through controlled deformation at specific points rather than causing overall frame bending, maintaining both contact force and frame stability.
2Ease of manufacture
If the frame body is used to limit the position of idler wheels, then assembly is simplified, but the rubber driving wheels and corresponding idler wheels are not firmly abutted against each other due to frame deformation
Solution Approach 1:
The patent replaces the static position-limiting structure with a dynamic elastic support system. The elastic elements allow the idler wheels to automatically adjust their positions in response to pressing forces, ensuring firm abutment against the rubber driving wheels while maintaining assembly simplicity through the integrated elastic support design.
3Productivity
If pressing forces are applied to drive the roller units, then paper transport is achieved, but frame deformation causes non-uniform pressing forces and insufficient friction
Solution Approach 1:
The patent incorporates elastic elements with specific elastic coefficients designed to accommodate and distribute pressing forces uniformly across multiple roller units. This parameter optimization ensures that each roller unit receives adequate and uniform pressing force, maintaining sufficient friction for reliable paper transport while preventing frame deformation that would cause force non-uniformity.
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
The roller structure effectively prevents paper jams by ensuring proper contact between wheels, improving operational efficiency and simplifying assembly while being cost-effective due to its detachable and integrated design.
Implementation Method 1
an elastic piece can push the idler wheel to tightly abut against the corresponding rubber driving wheel
Implementation Method 2
The elastic portion includes at least one bent section having an end extending and bent from the first lateral edge of the base
Implementation Method 3
the rubber driving wheels are in contact with the paper to drive the paper to move by the friction, and the idler wheels are driven to rotate due to the friction between the paper and the idler wheels
Data Source
AI summary
A roller structure is disclosed and includes at least one roller unit. The roller unit includes a base, an elastic portion, a supporting portion and a rotating wheel. The base is configured to detachably assemble the roller unit on an accommodation seat. The base includes a first lateral edge. The elastic portion is disposed on the base and connected with the first lateral edge. The elastic portion includes a bent section having an end extending and bent from the first lateral edge. The supporting portion is disposed on the elastic portion and connected to the other end of the bent section. The rotating wheel is pivotally connected to the supporting portion. When the rotating wheel is pressed by a driving wheel, the supporting portion is driven to compress the elastic portion to move the rotating wheel toward the base, and the rotating wheel is driven to rotate relative to the supporting portion.