Braille display device for transmission of electromagnetic-drive cam self-locking connecting rod

Abstract

The invention discloses a braille display device for the transmission of an electromagnetic-drive cam self-locking connecting rod. The device comprises a contact probe display module which mainly consists of an electromagnetic drive mechanism, a cam self-locking mechanism, a connecting rod transmission mechanism, a housing, and a probe cap. The electromagnetic drive mechanism is installed at the bottom of the housing, and is connected with the connecting rod transmission mechanism through the cam self-locking mechanism. The connecting rod transmission mechanism is connected to the upper part of the housing, and the probe cap is connected to the connecting rod transmission mechanism. The upper end of the probe cap stretches out of the housing, and the connecting rod transmission mechanism drives the probe cap to move up and down to form the contact movement on the top surface of the housing for the braille display. The device achieves the resetting of a braille contact point, can achieve the mechanical self-locking of the braille contact point on the cam-shaped curved surface, does not need the continuous power supply, is short in response time, is low in power consumption, is low in reliability, and can achieve the refreshable braille display.

Description

Technical field [0001] The present invention relates to a braille display device, in particular to a braille display device driven by an electromagnetically driven cam self-locking linkage, which is convenient for visually impaired persons and low-vision groups to carry, and is mainly used for reading and learning braille. Background technique [0002] When human beings lose sight, they lose 70% of the information receiving channels, and the blind are one of the most difficult groups among the disabled. According to statistics from the World Health Organization in 2010, there are about 285 million people with impaired vision in the world, of which 39 million are blind, and the rest are people with varying degrees of low vision. China has the largest blind population in the world (8.25 million), accounting for about 21% of the total number of blind people in the world. This is a huge group that needs help in particular. [0003] Because the visual system is impaired, blind people ...

AI Technical Summary

Problems solved by technology

[0004] Although the blind can learn through tactile reading, it is difficult to make Braille books, the cost is high, and they are relatively heavy and inconvenient to carry

Not only that, the amount of knowledge that can be contained in a braille book is relatively small, and the update speed is far behind the current technological development

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