Tactile Feedback Mechanism for Biological Safety Cabinet Glass Window Positioning
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Solution Overview
Problem
Biological safety cabinets (BSC) face challenges in accurately and easily moving a large, heavy glass window to its optimal working position due to its weight and volume, affecting airflow and performance standards, potentially leading to safety issues.
Innovation Solution
A feedback mechanism comprising a roller element and contact component with micro switches, providing tactile and digital feedback to ensure the glass window is accurately positioned, using a spring-driven roller and inclined surfaces to balance ease of movement and clear feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the glass window is made large and heavy to provide adequate coverage, then the protective coverage area is improved, but the ease of moving the window to the working position deteriorates
Solution Approach 1:
The patent employs tactile feedback through a roller mechanism that engages with the glass window. When the window reaches the correct working position, the roller contacts a specific feature on the window frame, providing a distinct tactile sensation to the user. This feedback mechanism enables users to accurately determine when the heavy window has been positioned correctly, resolving the contradiction between the window's large size/weight and the ease of positioning it.
2Area of stationary object
If the glass window is made large and heavy to provide adequate coverage, then the protective coverage area is improved, but the positioning precision at the working position deteriorates
Solution Approach 1:
The roller mechanism provides tactile feedback that enables precise positioning of the heavy glass window. The roller engages with a specific feature on the window frame at the correct working position, creating a distinct tactile sensation that allows users to accurately determine when the window has reached its proper position, thereby achieving high positioning precision despite the window's large size and weight.
Solution Approach 2:
The patent replaces complex mechanical positioning systems with a simple roller-based tactile feedback mechanism. Instead of using motors, sensors, or complex mechanical linkages to position the heavy window, the invention uses a passive roller that provides tactile cues to the user, enabling precise positioning through human sensation rather than complex mechanical control systems.
3Ease of operation
If manual force is applied to move the heavy glass window, then the window can be moved, but the energy consumption and user fatigue increase
Solution Approach 1:
The tactile feedback mechanism provided by the roller reduces the energy users need to expend when moving the heavy glass window. By providing clear tactile cues that indicate when the window reaches the correct position, users can move the window more efficiently with less trial and error, reducing both the physical effort and time required for positioning, thereby lowering overall energy consumption.
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 users to accurately and easily position the glass window, ensuring optimal performance and safety by providing distinct tactile and digital feedback, maintaining airflow standards and preventing safety hazards.
Implementation Method 1
a roller element being fixedly disposed with respect to the cover plate and comprising a rollable roller
Implementation Method 2
the roller element is a spring-driven roller element, which further comprises a roller bearing portion and a spring disposed in the roller bearing portion
Data Source
AI summary
The present invention relates to a feedback mechanism for a biological safety cabinet comprising a glass window and a cover plate in front of the glass window, the feedback mechanism comprises a monitor control component comprising a roller element being fixedly disposed with respect to the cover plate and comprising a rollable roller, and a contact component being fixedly disposed relative to the glass window so that the contact component can move relative to the roller with movement of the glass window, the contact component comprising a recess for receiving the roller, wherein the contact component moves with the glass window to a position corresponding to the roller when the glass window moves relative to the cover plate, such that the roller rolls into the recess, allowing the feedback mechanism to generate tactile feedback.