Magnetic Braille Pin Latching Mechanism for Low Power Tactile Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Visually impaired individuals face significant challenges in interacting with digital devices due to the digital disparity gap, as they rely on outdated technologies that limit their ability to read and interact with digital information efficiently, often requiring audio assistance or Braille, which restricts their pace and ability to skim content.
Innovation Solution
The development of tactile actuators and Braille displays that utilize magnetic interference and latching mechanisms to create programmable Braille pins, allowing for the creation of robust, energy-efficient electronic Braille cells that can power multi-line and single-line digital displays, enabling Braille readers to navigate digital interfaces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If magnetic interference and latching mechanisms are used to create programmable Braille pins, then energy efficiency and robustness are improved, but device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical spring-based Braille cell actuators with a magnetic field-based latching mechanism. An electromagnet generates magnetic fields to attract or repel a magnet attached to the Braille pin, enabling programmable control of pin elevation without requiring mechanical springs or complex mechanical linkages. This substitution reduces energy consumption while maintaining actuation functionality.
Solution Approach 2:
The patent introduces a magnet as an intermediary component between the electromagnet and the Braille pin. The magnet attached to the pin interacts with the electromagnet's magnetic field to produce the desired motion, serving as a mediator that translates electromagnetic energy into mechanical displacement of the Braille cell. This intermediary enables efficient energy transfer while simplifying the overall actuation mechanism.
2Reliability
If magnetic interference and latching mechanisms are used to create programmable Braille pins, then robustness is improved, but device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical spring-based Braille cell actuators with a magnetic field-based latching mechanism. An electromagnet generates magnetic fields to attract or repel a magnet attached to the Braille pin, enabling programmable control of pin elevation without requiring mechanical springs or complex mechanical linkages. This substitution reduces energy consumption while maintaining actuation functionality.
Solution Approach 2:
The magnetic latching mechanism provides self-latching functionality where the magnet and electromagnet naturally maintain their attracted or repelled states without requiring continuous energy input or complex control mechanisms. The system uses the inherent magnetic properties to maintain position, reducing the need for additional mechanical retention components and simplifying the overall design.
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
These solutions enable Braille readers to engage with digital information more efficiently by providing tactile feedback, allowing for the formation of Braille characters and graphics, enhancing their ability to read and interact with digital content at their own pace, thereby bridging the digital disparity gap.
Implementation Method 1
The magnetic spring can comprise a magnet engaged with the Braille pin and a ferrous plate forming the tactile surface of the tactile actuator, where attraction of the magnet towards the ferrous plate provides a force supporting the brail pin
Implementation Method 2
a latching mechanism that uses the magnetic interference of opposing magnets to push the Braille pin and/or a latching mechanism off a central axis thereby causing mechanical interference that can be sensed
Implementation Method 3
a latching mechanism that uses the magnetic interference of opposing magnets to push the Braille pin and/or a latching mechanism off a central axis
Data Source
AI summary
This patent describes magnetic Braille cell actuator structures which include Braille pin movement and latching mechanisms. In one example, the Braille pin can be kept at reading position all time by a small force spring and latching of Braille pin can be realized by controlling movement of a latching bar underneath the Braille pin by a combination of electromagnet and permanent magnets working together. In a second example, the Braille pin can be moved between reading and rest positions through the repulsive and attractive interaction between a programmable magnet and a permanent magnet; while the latching of Braille pin is through the jumping and tilting action of the Braille pin onto a latching stage through the horizontal and vertical interactive magnetic forces. The unique magnetic Braille pin movement and latching mechanism enables very low power consumption of Braille display while Braille pin matching the standard spacing.