A low-energy-consumption electromagnetic pull rod type Braille point display module

Abstract

A low-energy-consumption electromagnetic pull rod type Braille point display module comprises a main body, ejector pins, actuating levers and an actuator, wherein at least one ejector pin mounting hole with a square number of Braille is arranged on the main body, the actuating levers with the same number of ejector pins as the ejector pin of each row are arranged below the ejector pin, and the lower end of each ejector pin is always in contact with the curve contour of one end of the corresponding actuating lever; The main body is also provided with the same number of actuator rod mounting holes as the ejector pin mounting holes, each actuating lever mounting hole is provided on the side of the main body, and each actuating lever is driven by an actuator, and each actuating lever uniquelycontrols the lifting and lowering movement of a corresponding ejector pin. The actuating lever mounting hole respectively communicates with a corresponding ejector pin mounting hole, and the centerline of each actuating lever mounting hole and the centerline of the corresponding ejector pin mounting hole are arranged perpendicularly to each other. The invention provides a low-energy-consumption electromagnetic pull-rod type Braille pointing display module, which is suitable for generating Braille characters in all languages and all forms.

Description

technical field [0001] The invention relates to the technical fields of mechanical engineering and electronic engineering, in particular to a low-energy-consumption electromagnetic pull-rod type braille display module. Background technique [0002] According to the statistics of the World Health Organization (WHO) in 2010, there are about 39 million blind people in the world, and most of them live in low-income and middle-income countries. By 2020, the number of blind people in China will increase significantly. Therefore, for such a large and important group of blind people, the society needs to give them care and support, and they also urgently need a good learning environment and cultural education. [0003] Blind people cannot learn and read like ordinary people. Their reading methods include auditory reading and touch reading. Tactile reading relying on fingers has fast reading speed and good information discrimination. It is a must-teach course in schools for the blin...

AI Technical Summary

Problems solved by technology

Since then, companies in Japan and Germany have developed braille display devices of 20 square meters and 40 square meters using piezoelectric ceramic sheets, and continuously optimized the structure to make the performance of piezoelectric ceramic sheets more stable. Low power consumption, fast refresh speed, light weight, and can provide a large supporting force, but there are also shortcomings: the production and processing process is cumbersome, and the manufacturing cost of parts is high, which limits the popularity of piezoelectric ceramic braille displays

At the beginning of the 20th century, Fung-Huei Yeh and others from the Department of Mechanical and Mechatronic Engineering of Tamkang University in Taiwan, China developed an electromagnetic Braille display device, because the electromagnetic Braille contact drive mechanism has a fast refresh rate and high reliability. High, favorable price, easy to manufacture and maintain, and can provide a large supporting force, etc. Since then, it has been continuously researched in some countries such as South Korea and China, but the whole device has a large current demand and high power consumption, so it needs to be installed with a cooling device , larger volume

Images