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A braille display module and a braille display device

A display module and Braille technology, applied in teaching aids, educational aids, instruments, etc., can solve the problems of easy ejection failure, slow response, and large heat generation of the bump structure, so as to avoid errors in Braille display, less heat generation, and simple driving circuit Effect

Active Publication Date: 2021-12-10
中清智能装备(昆山)有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a braille display module and a braille display device. First, it can solve the problem that the bump structure is easy to eject and fail in the prior art, thereby avoiding errors in braille display; second, it can reduce the size of the braille display. The overall volume of the device, and it can respond quickly and the driving speed is fast, so as to solve the technical problems of large volume, slow response, and large heat caused by electromagnetic drive or shape memory alloy drive.

Method used

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  • A braille display module and a braille display device
  • A braille display module and a braille display device
  • A braille display module and a braille display device

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Embodiment Construction

[0038] In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the technical solutions of the present invention will be described in detail through embodiments below with reference to the accompanying drawings.

[0039] figure 1 This is an exploded view of the contact drive mechanism used for the Braille display device in this embodiment, figure 2 This is an assembly drawing of the contact drive mechanism used in the Braille display device in this embodiment. The contact drive mechanism 300 is a piezoelectric drive mechanism, which is mainly composed of a convex key 301, a screw key 302, a shaft clamp 303, a preload spring 304, a rotor A 305, a stator A 306, a piezoelectric ceramic tube 307, and a stator B308. , Rotor B 309, shaft 310, silica gel sheet A 311, shaft end sleeve 312, electrode wiring 313, silica gel sheet B 314. The rotating shaft 310 is sequentially milled from the top to form three plane slots, and the diam...

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Abstract

The invention discloses a braille display module and a braille display device. The braille display module includes a housing and a plurality of contact drive mechanisms installed therein, the contact drive mechanisms are piezoelectric drive mechanisms, wherein the convex key that bears the downward pressure when the blind person touches is separated from the piezoelectric ceramic tube, It can avoid problems such as Braille display errors caused by drive failure; the piezoelectric drive structure is small in size and fast in response, thus solving the technical problems of large volume, slow response, and large heat caused by electromagnetic drive or shape memory alloy drive. The contact drive mechanism is threadedly connected to the housing of the Braille display module through a screw key through a threaded sleeve, which can effectively improve output force and displacement resolution, and has a power-off self-locking function. The braille display device is formed by arranging multiple braille display modules, which has the advantages of fast response, less heat generation, fast driving speed, and stable structure.

Description

technical field [0001] The present invention relates to the technical field of braille display, in particular to a braille display module and a braille display device. Background technique [0002] Braille display devices are an important part of Braille digital reading equipment. Based on different principles at home and abroad, contact drive mechanisms for Braille display devices have been developed. Blind people can know the corresponding Braille characters by touching the raised contacts on the Braille display device. Information. The raised bump structure needs to be able to resist the down pressure caused by the reader's touch, and the existing braille display devices often cause the failure of the bump structure due to the action of the down pressure, so that the braille display is wrong. At the same time, electromagnetic driving and shape memory alloy driving are the main driving methods of Braille display, but these two driving methods have their own limitations: e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B21/00
CPCG09B21/004
Inventor 钱威
Owner 中清智能装备(昆山)有限公司
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