CN214752483U - Braille display reader device based on piezoelectric motor - Google Patents
Braille display reader device based on piezoelectric motor Download PDFInfo
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- CN214752483U CN214752483U CN202120650094.2U CN202120650094U CN214752483U CN 214752483 U CN214752483 U CN 214752483U CN 202120650094 U CN202120650094 U CN 202120650094U CN 214752483 U CN214752483 U CN 214752483U
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Abstract
The invention provides a braille display reader device based on a piezoelectric motor, which consists of the piezoelectric motor, a rotating shaft, a rotor friction groove, a positioning groove, a spring clamping groove, a spiral convex key clamping groove, a stator glue groove, a piezoelectric ceramic tube, an electrode insulation area, an electrode, a stator, a rotor, a D-shaped positioning clamping groove, a spring retaining sheet, a convex key structure, an elastic gasket, a spiral convex key, an elastic gasket, a shell structure, a top shell, a positioning pin, a threaded plate, a threaded lower supporting plate, a motor fixing plate, a flexible lead plate, a bottom supporting plate, a fastening screw, a shell protective cover and an elastic protective film Dirt such as dust enters the product, and the protective film has the characteristics of elasticity and smoothness and can reduce the abrasion of fingerprints of the blind.
Description
Technical Field
The invention relates to the technical field of Braille display, in particular to a Braille display reader device based on a piezoelectric motor.
Background
The blind cannot watch things like normal people by eyes, the external information is mainly obtained by the hearing of ears and the touch of fingers, and the information provided for the user by a common personal computer is mainly graphic and character information displayed by a liquid crystal screen, which cannot be used by the blind.
The conventional method for the blind to read and learn is Braille convex point paper, the blind learns through convex points, but the paper is thick and heavy, the carrying and reading are inconvenient, and meanwhile, the convex point paper is produced by special Braille printing equipment, and the blind cannot read in real time.
The existing braille point display in the general market is driven by an electromagnetic structure or a memory alloy structure, and has larger volume and larger current; the memory alloy structure has slow drive response and large heat generation, and can not keep the final display state after power failure.
In addition, the existing braille point display in the market generally only has one row of display areas, the area array area combination cannot be realized due to the large occupied area, only one row of braille points can be displayed, and especially in the aspect of education application, information such as complex lines and formula symbols like pattern outlines and mathematical formulas cannot be displayed in a conversion mode.
Disclosure of Invention
In view of the above, the utility model provides a braille display reader device based on piezoelectric motor, the utility model discloses the invention is realized through following technical scheme: the utility model provides a braille shows reading ware device based on piezoelectric motor, by piezoelectric motor, the apparatus further comprises a rotating shaft, rotor friction recess, the constant head tank, spring clamping groove, spiral convex key draw-in groove, the stator glue groove, the piezoceramics pipe, electrode insulation region, the electrode, the stator, the rotor, D type positioning groove, the spring separation blade, the convex key structure, elastic gasket, spiral convex key, elastic gasket, shell structure, the top shell, the locating pin, the thread plate, the screw bottom suspension fagging, the motor fixed plate, flexible lead plate, the bottom sprag board, fastening screw, the shell protection casing, the elasticity protection film is constituteed. The method is characterized in that: the motor fixed plate is provided with the mounting hole, piezoelectric motor installs in the fixed plate mounting hole, screw thread bottom suspension fagging is in motor fixed plate top, and fix a position through the locating pin, the threading board is in screw thread bottom suspension fagging top, and fix a position through the locating pin, flexible lead plate is provided with motor installation round hole, the round hole position is concentric with the motor fixed plate, the laminating is in motor fixed plate bottom during the installation, the piezoceramics pipe electrode passes through soldering tin and welds with flexible lead plate, the bottom suspension fagging is fixed in flexible lead plate below, and fix a position through locating pin and motor fixed plate and make the mounting hole concentric, fasten the bottom suspension fagging through the fastening screw.
Furthermore, the two ends of the piezoelectric ceramic tube are bonded with metal stators, special glue is used for smearing the metal stators in a glue groove of the stators, the stators after the glue is smeared are inserted into the two ends of the piezoelectric ceramic tube to be compressed, and after the glue is solidified, the piezoelectric ceramic tube and the stators at the two ends are integrated.
Further, the piezoelectric motor is sequentially assembled in the rotating shaft through the stator, the piezoelectric ceramic tube, the stator, the rotor, the spring and the spring catch respectively, and the piezoelectric motor is characterized in that a rotor friction groove is arranged at the bottom of the rotating shaft of the motor, the groove and the rotating shaft are integrally formed, a positioning groove, a spring clamping groove and a spiral convex key clamping groove are distributed on a shaft rod of the rotating shaft, the rotor is provided with a D-shaped positioning clamping groove, the clamping groove is in key groove fit with the positioning groove, and when the rotor rotates, the rotating shaft is driven to rotate through the D-shaped positioning clamping groove.
Furthermore, the motor fixing plate is provided with a plurality of mounting holes, the distance between the mounting holes is less than or equal to 2.8mm, the number of the mounting holes is determined according to the volume and the reading area required by a user, and the mounting holes can be a reader consisting of more than one hundred piezoelectric motors or thousands of piezoelectric motors.
Further, the laminating of shell protection casing and top surface, shell protection casing top bonds and has the elasticity protection film, material thickness is between 0.03mm ~ 0.1mm, this elasticity protection film adopts materials such as latex, polyurethane, novel compound nanometer to make, the elasticity protection film has elasticity, smooth characteristic, can reduce the wearing and tearing of blind person's fingerprint, make the shell surface prevent that liquid, sweat, dust in the use from entering into inside the product simultaneously, and laminating shell and spiral convex key that can be fine do not influence blind person's touch effect.
The piezoelectric motor used in the invention has simple and compact structure, simplifies the manufacturing process, can solve the problems of complex structure, difficult miniaturization and the like of the existing rotary linear piezoelectric motor, and can better adapt to miniaturization and batch production by using the technology.
[ beneficial effects of the present invention ]
(1) The device has large stroke of the convex contact, and is beneficial to the touch of the blind;
(2) the device can realize large-area Braille contact combination and support the display of shapes, patterns, mathematical formulas and the like;
(3) the device can realize large-area combination of the Braille contacts, is closer to the effect of Braille books, and can improve the reading speed of blind people;
(4) the surface of the shell is provided with an elastic protective film, so that liquid, sweat, dust and other dirt can be prevented from entering the product in the use process of the blind, and the protective film has the characteristics of elasticity and smoothness and can reduce the abrasion of fingerprints of the blind.
[ description of the drawings ]
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is an exploded perspective view.
Fig. 2 is an exploded front view.
Fig. 3 is a plan view.
Fig. 4 is a cross-sectional view of the top view of fig. 3.
Fig. 5 is a perspective view of the rotating shaft.
Fig. 6 is a front view and a perspective view of the rotor.
Fig. 7 is a front view of the piezoelectric motor.
Fig. 8 is a perspective exploded view of a piezoelectric motor.
Fig. 9 is a schematic diagram of the excitation signal and deformation of the piezoelectric ceramic tube.
Fig. 10 is a perspective view of a protective cover with a housing.
In the figure: 1-a piezoelectric motor; 101-a rotating shaft; 1011-rotor friction groove; 1012-positioning grooves; 1013-spring card slot; 1014 spiral lug card slot; 102-a stator; 1021-stator glue tank; 103-piezoelectric ceramic tube; 1031-electrode insulation region; 1032-electrodes; 104-a stator; 105-a rotor; 1051-D type positioning card slot; 106-a spring; 107-spring catches; 2-a lug structure; 201-elastic gasket; 202-spiral convex key; 203-elastic gasket; 3-a housing structure; 301-a top housing; 302-locating pins; 303-thread plate; 304-threaded lower support plate; 305-motor fixing plate; 306-a flexible lead plate; 307-bottom support plate; 308-fastening screws; 4-a housing shield; 401-elastic protective film.
[ detailed description of the invention ]
Referring to fig. 1 to 10, the present invention provides a technical solution: a braille display reader device based on a piezoelectric motor is composed of a piezoelectric motor 1, a rotating shaft 101, a rotor friction groove 1011, a positioning groove 1012, a spring clamping groove 1013, a spiral convex key clamping groove 1014, a stator 102, a stator glue groove 1021, a piezoelectric ceramic tube 103, an electrode insulation area 1031, an electrode 1032, a stator 104, a rotor 105, a D-shaped positioning clamping groove 1051, a spring 106, a spring baffle 107, a convex key structure 2, an elastic gasket 201, a spiral convex key 202, an elastic gasket 203, a shell structure 3, a top shell 301, a positioning pin 302, a thread plate 303, a thread lower supporting plate 304, a motor fixing plate 305, a flexible lead plate 306, a bottom supporting plate 307, a fastening screw 308, a shell protective cover 4 and an elastic protective film 401. The method is characterized in that: the motor fixing plate 305 is provided with a plurality of mounting holes, the piezoelectric motor 1 is mounted in the motor fixing plate 305 mounting holes, the threaded lower support plate 304 is above the motor fixing plate 305, and is positioned by the locating pin 302, the threaded plate 303 is above the threaded lower support plate 304, and is positioned by locating pins 302, top housing 301 is above thread plate 303, and is positioned by the positioning pin 302, the flexible lead plate 306 is provided with a motor mounting circular hole which is concentric with the motor fixing plate 305 and is attached to the bottom of the motor fixing plate 305 during mounting, the piezoelectric ceramic tube 103 is provided with 4 electrodes 1032 and an electrode insulation area 1031, the electrodes 1032 are welded with the flexible lead plate by soldering tin, the bottom support plate 307 is fixed below the flexible lead plate 306, the motor fixing plate 305 is positioned concentrically with the mounting hole by the positioning pin 302, and the bottom support plate 307 is fastened by a fastening screw 308.
The metal stators 102 are bonded to two ends of the piezoelectric ceramic tube 103 in an adhering manner, as shown in fig. 7 and 8, special glue is applied to a stator glue groove 1021, the stator 102 coated with the glue is inserted into two ends of the piezoelectric ceramic tube 103 to be compressed, and after the glue is solidified, the piezoelectric ceramic tube 103, the stators 102 at two ends and the stator 104 are integrated.
The piezoelectric motor 1 is composed of a stator 102, a piezoelectric ceramic tube 103, a stator 104, a rotor 105, a spring 106, and a spring stopper 107, which are sequentially assembled in a rotating shaft 101, as shown in fig. 5 to 8, and is characterized in that a rotor friction groove 1011 is formed at the bottom of the rotating shaft 101 of the motor, the groove and the rotating shaft 101 are integrally formed, a positioning groove 1012, a spring clamping groove 101, and a spiral convex key clamping groove 1014 are distributed on a shaft lever of the rotating shaft 101, the rotor 105 is provided with a D-shaped positioning clamping groove 1051, the clamping groove 1051 and the positioning groove 1012 are in keyway fit, and when the rotor 105 rotates, the rotating shaft 101 is driven to rotate by the D-shaped positioning clamping groove 1051.
The outer diameter of the piezoelectric ceramic tube 103 is less than or equal to 2.0mm, and the piezoelectric ceramic material of the piezoelectric ceramic tube is a lead-containing piezoelectric ceramic material or a lead-free piezoelectric ceramic material.
The stator 102 and the rotor 105 are made of an elastic material, such as titanium alloy, copper alloy, aluminum alloy, or high-strength elastic high-molecular polymer.
The outer wall of the piezoelectric ceramic tube 103 is uniformly coated with 4 electrodes 1032, and two ends of the piezoelectric ceramic tube 103 are left with electrode insulation regions 1031, as shown in fig. 7 and 8, for preventing the electrodes 1032 from conducting with the metal stator 102, the inner wall of the piezoelectric ceramic tube 103 is coated with all electrodes, and under the action of a preset driving voltage, the piezoelectric ceramic tube 103 is excited to generate two orthogonal vibration modes of the same type, so that the surfaces of the stator 102 and the stator 104 which are fixedly bonded with the piezoelectric ceramic tube can generate micro-amplitude high-frequency vibration in an elliptical form, and then the micro-amplitude high-frequency vibration is transmitted to the rotor 105 and the rotor friction groove 1011 which are in friction contact with the two ends of the piezoelectric ceramic tube through a friction coupling effect.
The rotor 105 is in friction contact with the stator 104 bonded with the piezoelectric ceramic tube 103, the rotor friction groove 1011 at the other end is in friction contact with the stator 102 bonded with the piezoelectric ceramic tube, the rotor 105 is provided with the D-shaped positioning clamping groove 1051, so that the rotor and the rotating shaft 101 are driven to realize the rotating motion of the rotating shaft 101, and the opposite rotating direction of the rotating shaft 101 can be realized by changing the phase difference of the input signals of the electrodes of the piezoelectric ceramic tube 103.
When the piezoelectric motor 1 works, two groups of alternating excitation signals are input to the electrodes of the piezoelectric ceramic tube 103, as shown in fig. 9, according to different material differences of the piezoelectric ceramic tube, the alternating frequency is set between 50KHz and 200KHz, because of the effect of inverse piezoelectric effect, the piezoelectric ceramic tube respectively generates extension and contraction deformation in two vertical directions, the whole piezoelectric ceramic outer cylinder generates a vibration state as shown in fig. 9, the phase difference of the A phase and the B phase input signals always keeps 90 degrees, when the excitation signals are in a positive half cycle, the area where the piezoelectric ceramic tube electrodes are located can generate extension distortion deformation, when the excitation signals are in a negative half cycle, the area where the piezoelectric ceramic tube electrodes 1032 are located can generate contraction distortion deformation, because the phase difference is 90 degrees, the piezoelectric ceramic tube electrodes 1032 corresponding to the excitation signals can also generate 90-degree phase difference deformation, the A phase and the B phase two groups of electrodes can alternately generate deformation along with the input excitation signals, further, after the end portions a and B at the two ends of the piezoelectric ceramic tube intersect and are twisted outwards alternately, the stator 104 of the piezoelectric ceramic tube is twisted outwards along the vertical direction of the piezoelectric ceramic tube, the rotor 105 is attached to the stator 104 and rotates along with the rotor 105 through friction, the rotor drives the rotating shaft 101 to rotate axially, the phase difference of excitation signals input by the electrode a and the phase B of the piezoelectric ceramic tube is changed into a phase difference of-90 degrees by changing the phase difference between the electrode a and the electrode B, so that the rotating shaft 101 rotates reversely, the rotating shaft 101 drives the threaded convex key 202 to move up and down, and the threaded convex key 202 protrudes out of the plane of the top shell 301 after rising.
The motor fixing plate 305 is provided with a plurality of mounting holes, the pitch of the mounting holes is less than or equal to 2.8mm, the spiral convex key 202 and the mounting holes of the motor fixing plate 305 are concentric, so that the pitch of the braille convex points is consistent with the pitch of the mounting holes and is less than or equal to 2.8mm, the number of the mounting holes is determined according to the volume and the reading area required by a user, and as shown in fig. 1 and 10, the reader can be a reader consisting of more than one hundred piezoelectric motors or a reader consisting of thousands of piezoelectric motors.
The working principle of the Braille contact is as follows:
the spiral convex key 202 is connected with the top of the motor rotating shaft 101 and is positioned with the spiral convex key 202 through the spiral convex key clamping groove 1014, the rotating shaft 101 axially rotates to drive the spiral convex key 202 to rotate, threads are arranged on the excircle of the spiral convex key 202 and are in threaded engagement transmission with the thread plate 303, when the spiral convex key rotates, the clockwise rotating convex key can move upwards, the top shell plays a role in lifting and positioning, when the spiral convex key rises and rotates to a certain position, the top shell is extruded through the elastic gasket to achieve a buffering effect and prevent the thread from being engaged and blocked, and at the moment, the spiral convex key at the top can protrude out of the shell to reach the height of a blind person contact; when anticlockwise rotation, the convex key can move downwards and can extrude the lower support plate of the screw thread, the elastic gasket 203 between the lower part of the spiral convex key and the lower support plate of the screw thread plays a role in buffering, the locking of the thread engagement is prevented, and the mechanical limiting effect is realized.
The rotary convex key 202 bears the pressing force of the blind when touching, the rotating shaft 101 and the spiral convex key 202 are separated, and the rotating shaft 101 cannot be pressed by the touch, so that the motor cannot be locked and cannot be damaged.
The piezoelectric motor 1 is controlled by the circuit board to drive each piezoelectric motor to move up and down, so that the protruding state of the rotary spiral convex key 202 is realized, and the patterns, braille information and the like required by the touch of the blind can be realized.
The surface of the shell protection cover 4 is attached to the surface of the top shell 301, as shown in fig. 10, the top of the shell protection cover is bonded with an elastic protection film 401, the thickness of the material is 0.03-0.1 mm, the elastic protection film is made of latex and polyurethane materials, the elastic protection film has the characteristics of elasticity and smoothness, the abrasion of fingerprints of the blind can be reduced, meanwhile, the surface of the shell is enabled to prevent liquid, sweat, dust and the like in the using process from entering the inside of a product, the shell and the spiral convex key 202 can be well attached, and the touch effect of the blind is not affected.
It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.
Claims (7)
1. The utility model provides a braille shows ware device of reading based on piezoelectric motor, be by a braille shows ware device of reading based on piezoelectric motor, by piezoelectric motor, the apparatus further comprises a rotating shaft, rotor friction recess, the constant head tank, spring clamping groove, spiral convex key draw-in groove, the stator glue groove, piezoelectric ceramic pipe, electrode insulation region, the electrode, the stator, the rotor, D type positioning groove, a spring, the spring catch, the convex key structure, elastic gasket, spiral convex key, elastic gasket, the shell structure, the top shell, the locating pin, the threading board, the screw bottom suspension fagging, the motor fixed plate, flexible lead plate, the bottom support board, fastening screw, the shell protection casing, the elasticity protection film is constituteed, its characterized in that: the motor fixed plate is provided with a plurality of mounting holes, piezoelectric motor installs in the motor fixed plate mounting hole, screw thread bottom suspension fagging is in motor fixed plate top, and fix a position through the locating pin, the threading board is in screw thread bottom suspension fagging top, and fix a position through the locating pin, flexible lead plate is provided with motor installation round hole, the round hole position is concentric with the motor fixed plate, the laminating is in motor fixed plate bottom during the installation, piezoceramics pipe is provided with 4 electrodes and electrode insulation region, the electrode passes through soldering tin and welds with flexible lead plate, the bottom suspension fagging is fixed in flexible lead plate below, and fix a position through locating pin and motor fixed plate and make the mounting hole concentric, fasten the bottom suspension fagging through the fastening screw.
2. A piezo motor based braille display reader device according to claim 1, characterized in that: the two ends of the piezoelectric ceramic tube are bonded with metal stators, special glue is used for smearing a stator glue groove, the stator after smearing the glue is inserted into the two ends of the piezoelectric ceramic tube to be compressed, and after the glue is solidified, the piezoelectric ceramic tube and the stators at the two ends are integrated.
3. A piezo motor based braille display reader device according to claim 1, characterized in that: the piezoelectric motor is assembled in the rotating shaft in sequence by a stator, a piezoelectric ceramic tube, a stator, a rotor, a spring and a spring catch respectively.
4. A piezo motor based braille display reader device according to claim 1, characterized in that: the bottom of the motor rotating shaft is provided with a rotor friction groove, and the groove and the rotating shaft are integrally processed and formed.
5. A piezo motor based braille display reader device according to claim 1, characterized in that: the outer wall of the piezoelectric ceramic tube is uniformly distributed and plated with 4 electrodes, and electrode insulation areas are reserved at two ends of the piezoelectric ceramic tube.
6. A piezo motor based braille display reader device according to claim 1, characterized in that: the motor fixing plate is provided with a plurality of mounting holes, and the distance between the mounting holes is less than or equal to 2.8 mm.
7. A piezo motor based braille display reader device according to claim 1, characterized in that: the shell protection cover is attached to the surface of the top shell, an elastic protection film is bonded to the top of the shell protection cover, the thickness of the material is 0.03-0.1 mm, and the elastic protection film is made of latex and polyurethane materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120650094.2U CN214752483U (en) | 2021-03-31 | 2021-03-31 | Braille display reader device based on piezoelectric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120650094.2U CN214752483U (en) | 2021-03-31 | 2021-03-31 | Braille display reader device based on piezoelectric motor |
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| Publication Number | Publication Date |
|---|---|
| CN214752483U true CN214752483U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120650094.2U Expired - Fee Related CN214752483U (en) | 2021-03-31 | 2021-03-31 | Braille display reader device based on piezoelectric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214752483U (en) |
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2021
- 2021-03-31 CN CN202120650094.2U patent/CN214752483U/en not_active Expired - Fee Related
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Effective date of registration: 20220321 Address after: 100044 block a, Rongke creative center, Bajiao East Street, Shijingshan District, Beijing Patentee after: Beijing Aerospace smart core IOT Technology Co.,Ltd. Address before: 100043 building 6, yuanjingxiuyuan, No. 67, Jingyang East Street, Bajiao street, Shijingshan District, Beijing Patentee before: Liu Cuizhu |
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Granted publication date: 20211116 |
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