Nested Pivoting Medium Detecting Mechanism for Continuous Media Feeding

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Solution Overview

Problem

Conventional image forming devices, such as scanners and printers, are limited in detecting large amounts of media due to structural interference, requiring operations to be divided into multiple stages, which is inconvenient for users.

Innovation Solution

An image forming device with a medium detecting mechanism that includes a detector, a first pivoting component, a second pivoting component, and a resilient component, allowing the media to drive the components to pivot and actuate the detector, enabling continuous signal generation without structural interference, even with large media quantities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a moving component is used to detect media, then the detector can be actuated by the media, but the moving range is restricted by internal mechanical space causing structural interference

Engineering Contradiction:
Improvemedia detection capabilityVSAvoidstructural interference
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent applies nesting by placing the second pivoting component inside the first pivoting component, creating a nested structure where one detection mechanism is housed within another. This allows both components to occupy the same internal space without interference, enabling the detection of large amounts of media while maintaining a compact structure that fits within the device's mechanical constraints.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Quantity of substance

If the moving component has a limited moving range, then the device structure remains compact, but only a small amount of media can be placed at the medium entrance

Engineering Contradiction:
Improvemedia capacityVSAvoidmoving range
Core Design Contradiction:
Quantity of substanceVSLength of moving object

Solution Approach 1:

The patent transitions from linear movement to rotational pivoting motion. Instead of extending the moving range in a straight line, the detection components pivot around fixed points, utilizing angular displacement to cover a larger effective detection area. This dimensional change in motion type allows the detector to scan through a wider range while maintaining a compact physical footprint.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The nested arrangement of two pivoting components allows the system to achieve extended effective detection range through multi-stage rotation. The outer first pivoting component and inner second pivoting component work together to cover a broader angular range, enabling detection of larger media quantities without increasing the overall device size.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Productivity

If the moving component is restricted by internal mechanical space, then the device remains compact, but the operation needs to be divided into multiple stages

Engineering Contradiction:
Improveoperation continuityVSAvoiddetection mechanism structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent combines two separate pivoting detection components into a single integrated mechanism. The first and second pivoting components are mechanically linked and work together as one unified detection system, allowing continuous detection across the full range of motion without requiring separate detection stages or manual intervention.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The resilient component is pre-loaded to provide continuous driving force to the pivoting components. This preliminary stored energy ensures that the detection mechanism can continuously pivot through its full range without stalling or requiring re-initialization, enabling uninterrupted detection of large amounts of media in a single operation.

Inventive Principle:
Principle #10Preliminary action

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 the detection of large media quantities without structural interference, preventing the need for multi-stage operations and enhancing user convenience by allowing continuous operation with increased media capacity.

Implementation Method 1

resilient deformation of the resilient component allows the first pivoting component to be driven by the at least one medium to continuously pivot in the first pivoting direction relative to the second pivoting component

Methodology Applied
Scientific EffectResilient deformation: Elasticity

Data Source

PatentUS11669035B2Image forming device and medium detecting mechanism thereof
Publication Date: 2023.06.06 AVISION
  • US11669035B2 patent drawing
  • US11669035B2 patent drawing
  • US11669035B2 patent drawing

AI summary

An image forming device includes a casing and a medium detecting mechanism. A medium entrance is formed on the casing. The medium detecting mechanism includes a detector, a first pivoting component, a second pivoting component and a resilient component. When at least one medium enters into the medium entrance and abuts against the first pivoting component, the at least one medium drives the first pivoting component to pivot in a first pivoting direction, so that the second pivoting component is driven by the resilient component to pivot in the first pivoting direction to actuate the detector for generating a signal. When the second pivoting component is stopped from pivoting in the first pivoting direction, deformation of the resilient component allows the first pivoting component to be driven by the at least one medium to pivot relative to the second pivoting component in the first pivoting direction continuously.