Shredder Operating Mode Display for Contamination and Visibility
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Solution Overview
Problem
Operators find it difficult to determine the operating mode of a chopper due to the placement of the switching device, which is often obscured by a plastic cover, making it hard to see and potentially leading to contamination.
Innovation Solution
A separate and easily visible operating mode display is implemented, using mechanical or electrical means to detect the direction of rotation, such as a wind vane or signal transmitters, and indicating the mode through a slide or light source, allowing the operator to easily recognize the operating mode without needing to lean or contaminate the switching area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the switching device is located adjacent to the drive motor in a lower area of the chopper housing, then the switching device is protected from contamination, but the operator cannot easily see the operating mode
Solution Approach 1:
The patent separates the switching device function from the display function. The switching device remains in its protected location near the drive motor, while a separate operating mode display is provided in a visible location on the housing, allowing the operator to see the operating mode without exposing the switching device
Solution Approach 2:
The patent introduces an intermediary operating mode display that mediates between the switching device and the operator. This display shows the operating mode in a visible location without requiring the operator to access the protected switching device area
2Object-affected harmful factors
If a plastic cover is provided over the switching device, then contamination is avoided, but the position of the switching device becomes difficult to see
Solution Approach 1:
The patent segments the control system into two independent parts: the protected switching device under the plastic cover and the separate operating mode display. This allows the cover to remain in place for contamination protection while the display provides visibility without requiring removal of the cover
Solution Approach 2:
The operating mode display acts as an intermediary that conveys information about the switching device position without requiring direct observation of the switching device itself, thus maintaining the integrity of the plastic cover
3Device complexity
If the operator must lean towards the switching device to determine operating mode, then the switching device remains in its original location, but the operator experiences ergonomic difficulties
Solution Approach 1:
The patent adds a new spatial dimension to the information display by placing the operating mode display on the housing in a location that is easily visible to the operator, eliminating the need to lean toward the lower-area switching device
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 operator to easily identify the chopper's operating mode without bending or risking contamination, enhancing ergonomic working and reducing noise and wear, while maintaining a robust design.
Implementation Method 1
a wind vane which is actuated by the air flow generated by the rotating movement
Data Source
Figure 1~3
Figure 4~6
Figure 7~11
AI summary
The chopping machine has a blade (6) which can rotate in either direction, as controlled by the operator. A display (32) on the machine casing (2) indicates the direction of rotation, as determined by a sensor connected to it.