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Piezoelectric resonance type flexible point display device

A flexible and piezoelectric technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problems of low refresh frequency, low reliability, and not easy to carry. Achieve the effect of high refresh frequency, reasonable design and simple structure

Active Publication Date: 2020-08-11
CHANGCHUN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the non-linear hysteresis characteristic of shape memory alloy type display, the response speed is slow, the supporting force is small and the reliability is low
Pneumatic braille displays require an external air source, are bulky, and are not easy to carry, which limits their development
Electromagnetic braille displays use electromagnetic coils as the drive source, and the temperature rises quickly after being powered on for a period of time, making it difficult to use for a long time, unable to adjust the vibration characteristics, and unable to meet the requirements of different comfort levels for different groups of people. It is not easy for users to identify characters and touch point, complex structure, large displacement, low refresh frequency, and magnetic interference

Method used

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  • Piezoelectric resonance type flexible point display device
  • Piezoelectric resonance type flexible point display device
  • Piezoelectric resonance type flexible point display device

Examples

Experimental program
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Effect test

Embodiment 1

[0029] see Figure 1-7 , in an embodiment of the present invention, a piezoelectric resonance type flexible point display device, including rubber feet 1 in contact with the workbench, four rubber feet 1 are provided, and the rubber feet 1 support the entire device And offset the vibration acting on the workbench, the upper end of the rubber foot 1 is nested on the lower end surface of the base 2, the middle part of the base 2 has a through hole and is connected with the fixed plate 3 by screws, and the fixed plate 3 Realize the function of supporting the vibration excitation device 5, the fixed plate 3 is connected with the bottom of the connecting rod 4 through a nut, the top of the connection rod 4 is connected with the bottom of the vibration excitation device 5 through a nut, and the vibration excitation device 5 provides the device with Vibration excitation, the top of the vibration excitation device 5 is connected to the bottom of the vibration transmission rod 6 throug...

Embodiment 2

[0036]The point display mechanism 8 includes a diaphragm 801, a lower casing 802, an upper casing 803, a flexible film 804, a sealing ring 805, a touch panel 806, a fastening bolt B807 and a fluid medium 808, and the middle part of the lower casing 802 is opened. There are through holes G, the through holes G and the diaphragm connecting rod 11 adopt clearance fit, eight through holes H are arranged on the outer side of the upper end surface of the lower housing 802 at equal angles with respect to the center line, and the upper housing 803 adopts a hollow structure , eight through holes L are arranged on the outer side of the upper end surface of the upper casing 803 with respect to the center line at equal angles, and a touch hole is opened in the middle of the touch panel 806, and eight through holes L are arranged at an equal angle about the center line on the outer side of the upper end surface of the touch panel 806. A through hole M, the fastening bolt B807 passes through...

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Abstract

The invention discloses a piezoelectric resonance type flexible point display device. The device comprises rubber bottom feet in contact with a workbench, and the number of the rubber bottom feet is four. The upper ends of the rubber bottom feet are embedded in the lower end face of a base. A through hole is formed in the middle of the base and connected with a fixing disc through a screw. The fixing disc is connected with the lower part of a connecting rod through a nut; the upper part of the connecting rod is connected with the lower part of a vibration excitation device through a nut; the upper part of the vibration excitation device is connected with the lower part of a vibration transmission rod through a nut; the upper end of the vibration transmission rod is connected with the lowerpart of a hoop in a clasping manner; the upper part of the hoop is connected with the lower end of a diaphragm connecting rod in a clasping manner; a supporting column is arranged on the upper end face of the base. According to the structure, the vibration characteristic can be adjusted by adjusting a balance weight mass block, the use requirements of different people for different comfort levelsare met, moreover, the device is combined with vibration dynamic stimulation under a certain point display effect, a user can recognize character contacts more easily, and the device is simple in structure, small in displacement, high in refreshing frequency and free of magnetic interference.

Description

technical field [0001] The invention relates to the technical field of tactile reproduction, in particular to a piezoelectric resonance type flexible point display device. Background technique [0002] Tactile reproduction is an important part of virtual reality technology, and Braille display is one of the important applications of tactile reproduction research. Blind people or people with low vision are one of the very special groups in the social composition. Under the background of the information age, understand the obstacles and difficulties in the life and work of blind people or people with low vision in obtaining information, and design a barrier-free, physical and psychological The development of knowledge and information reading devices suitable for blind people is of great significance to solving the social problem of blind people's information acquisition. [0003] Due to the non-linear hysteresis characteristic of the shape memory alloy type display, the respo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B21/00H02N2/00
CPCG09B21/003G09B21/004H02N2/005H02N2/001
Inventor 田晓超徐安俊李庆华赵昌龙贺春山于淼候跃谦赵剑李志瑶张代治刘夏杨凤双
Owner CHANGCHUN UNIV
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