CN112258943A - Piezoelectric cantilever pneumatic braille point display - Google Patents
Piezoelectric cantilever pneumatic braille point display Download PDFInfo
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- CN112258943A CN112258943A CN202011256769.1A CN202011256769A CN112258943A CN 112258943 A CN112258943 A CN 112258943A CN 202011256769 A CN202011256769 A CN 202011256769A CN 112258943 A CN112258943 A CN 112258943A
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- 238000003860 storage Methods 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 10
- 230000004044 response Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 6
- 239000010408 film Substances 0.000 description 12
- 239000010409 thin film Substances 0.000 description 6
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009395 genetic defect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B21/00—Teaching, or communicating with, the blind, deaf or mute
- G09B21/001—Teaching or communicating with blind persons
- G09B21/003—Teaching or communicating with blind persons using tactile presentation of the information, e.g. Braille displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B21/00—Teaching, or communicating with, the blind, deaf or mute
- G09B21/001—Teaching or communicating with blind persons
- G09B21/003—Teaching or communicating with blind persons using tactile presentation of the information, e.g. Braille displays
- G09B21/004—Details of particular tactile cells, e.g. electro-mechanical or mechanical layout
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
- H02N2/005—Mechanical details, e.g. housings
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- Audiology, Speech & Language Pathology (AREA)
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- Audible And Visible Signals (AREA)
Abstract
The invention discloses a piezoelectric cantilever pneumatic braille point display, which comprises a plurality of single-row components, wherein all the single-row components are arranged in parallel side by side, each single-row component comprises an outer frame, a touch pad is sleeved at an opening at the top end of the outer frame, a plurality of contact holes are uniformly formed in the touch pad, a cavity frame is sleeved in an inner cavity of the outer frame, a plurality of through holes matched with the contact holes are uniformly formed in the cavity frame, and a gas storage device matched with the contact holes is arranged at the top end of the cavity frame; when the strain structure is applied, the piezoelectric vibrator is bent and deformed due to the inverse piezoelectric effect, the supporting column pushes the lower film to be elastically deformed under the action of force, so that the pressure in the air cavity is increased, the upper film is pushed to be elastically deformed and bent upwards, the contact hole is protruded, the Braille contact is formed, the strain structure is simple, the stress change is obvious, the response speed is greatly improved, the strain structure can be used under most environmental conditions, and the strain structure is very convenient to apply.
Description
Technical Field
The invention relates to the technical field of blind education equipment, in particular to a piezoelectric cantilever pneumatic braille point display.
Background
In the current information age, most of information and knowledge are transmitted to people in a digital electronic form, and the mode brings great convenience to the life of people. However, for those with impaired vision due to congenital genetic defects or unfortunate encounter with acquired genes, the information-based society has great restrictions on their survival and development. For the blind people who lose vision, reading and perceiving the surrounding world are very difficult things, so the sense of touch is the most important channel beyond the hearing, and the blind people can obtain information such as characters or images through the sense of touch of fingers, but because the production cycle of Braille books is long, the Braille books have time lag, cannot be updated in real time, and are limited in quantity and types, therefore, in order to facilitate the life and study of the blind people, some electronic mechanical devices which are specially designed for the blind people and can output Braille, namely Braille point display devices, are produced. The Braille point display can convert the character information in the computer into Braille, so that the blind can carry out man-machine interaction with the computer through touch.
Some german and american companies have expensive braille dot displays, which prevents the popularization of the touch device for blind people. Some braille display devices have been developed so far, for example: the memory alloy type braille display device is developed according to the shape memory effect, has high response speed, simple structure, light and portable material, larger generated strain and high requirement on working environment, brings great difficulty to the development of actual work and is inconvenient for the popularization of equipment; the electromagnetic braille display device is easy to control and can generate required tactile force, but the device has high energy consumption, large volume, high generated heat and complicated mechanical structure. The Braille point display device adopting the driving mode has defects in the aspects of use environment, stress strain, energy consumption, structure and the like.
Disclosure of Invention
The invention aims to provide a piezoelectric cantilever pneumatic braille point display to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a piezoelectricity cantilever pneumatic type braille point display, includes a plurality of single-row components, all the single-row components are parallel arrangement side by side, and the single-row components include the frame, the frame is the open box structure in top, and the top opening part cover of frame is equipped with the touch pad, even being equipped with a plurality of contact holes on the touch pad, the inner chamber endotheca of frame is equipped with the chamber frame, even being equipped with a plurality of through-holes that cooperate with the contact hole on the chamber frame, be the one-to-one relation between through-hole and the contact hole, the top of chamber frame is equipped with the gas storage device who cooperates with the contact hole, be equipped with the support column with gas storage device matched with in the through-hole, the support column is T shape structure, and the length of all support columns differs, and the length of all support columns from left to right increases the range in proper order, and the screw connection piezoelectric vibrator is passed through to the bottom, all the piezoelectric vibrators are arranged in parallel, the lengths of all the piezoelectric vibrators are different, the piezoelectric vibrators are bent and deformed due to the inverse piezoelectric effect, and the supporting columns push the gas storage device to be elastically deformed under the action of force, so that the contact holes are protruded, and the Braille contact is formed and is convenient for a blind person to use; the whole strain structure is simple, stress change is obvious, response speed is greatly improved, the use under most environmental conditions can be met, and the application is very convenient; in addition, the whole device can realize the display of multiple lines of characters and pictures by integrating a plurality of single-row components;
the frame chooses the preparation of ya keli board material to form for use, because ya keli board quality is light, workable, plasticity is strong, mechanical strength is high for the product satisfies light, portable, the light characteristics of quality, and can satisfy the use under most environmental condition.
In a further embodiment, the gas storage device comprises a plurality of gas cavities matched with the contact holes and the through holes, the gas cavities and the contact holes are in one-to-one correspondence, the top ends of the gas cavities are provided with upper thin films matched with the contact holes, the bottom ends of the gas cavities are provided with lower thin films matched with the through holes and the support columns, the inner cavities of the gas cavities are symmetrically provided with sealing rings matched with the upper thin films and the lower thin films up and down, the sealing rings are made of rubber materials, the piezoelectric vibrators are bent and deformed due to the inverse piezoelectric effect, the support columns push the lower thin films to be elastically deformed under the action of force, so that the pressure in the gas cavities is increased, the upper thin films are pushed to be elastically deformed and bent upwards, the contact holes are protruded, braille contacts are formed, the use by blind persons is facilitated, the whole strain, and can meet the use under most environmental conditions, and the application is very convenient.
In a further embodiment, the piezoelectric vibrator comprises a piezoelectric ceramic piece and a copper substrate, two ends of the copper substrate are respectively connected with an inner hexagon bolt and a screw, and the upper end and the lower end of the copper substrate are symmetrically provided with the piezoelectric ceramic piece.
Compared with the prior art, the invention has the beneficial effects that:
1. when the strain structure is applied, the piezoelectric vibrator is bent and deformed due to the inverse piezoelectric effect, the supporting column pushes the lower film to be elastically deformed under the action of force, so that the pressure in the air cavity is increased, the upper film is pushed to be elastically deformed and bent upwards, the contact hole is protruded, the Braille contact is formed, the strain structure is simple, the stress change is obvious, the response speed is greatly improved, the strain structure can be used under most environmental conditions, and the strain structure is very convenient to apply;
2. according to the invention, a plurality of single-row components are integrated together, so that the whole device can display a plurality of lines of characters and pictures;
3. the piezoelectric vibrator formed by piezoelectric ceramics is used as a power element to form the piezoelectric driving point display device which is long in service life and energy-saving, and the stress change of the piezoelectric vibrator of the cantilever beam structure is obvious, so that the response speed is greatly improved, and the problems of large power consumption, heat generation and electromagnetic interference of the conventional electromagnetic braille point display device are solved;
4. the outer frame is made of acrylic plate materials, and the acrylic plate is light in weight, easy to process, strong in plasticity and high in mechanical strength, so that the product meets the characteristics of lightness, portability and light weight, and can meet the use requirements under most environmental conditions.
Drawings
FIG. 1 is a schematic structural view of a single row assembly of a piezoelectric cantilever pneumatic braille display;
FIG. 2 is a schematic view of an integrated three-dimensional structure of two single-row assemblies of a piezoelectric cantilever pneumatic braille display;
FIG. 3 is a schematic cross-sectional view of a single row assembly of a piezoelectric cantilever pneumatic braille display;
FIG. 4 is a schematic perspective view of a piezoelectric vibrator of a piezoelectric cantilever pneumatic Braille display;
fig. 5 is a structural diagram of a cross section of a piezoelectric vibrator of a piezoelectric cantilever pneumatic braille display.
In the figure: 1-outer frame, 2-touch pad, 3-contact hole, 4-gas storage device, 41-upper film, 42-lower film, 43-gas cavity, 44-sealing ring, 5-cavity frame, 6-piezoelectric vibrator, 61-piezoelectric ceramic piece, 62-copper substrate, 7-support column, 8-hexagon socket head cap screw and 9-screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, a piezoelectric cantilever pneumatic braille point display comprises a plurality of single-row components, all of which are arranged in parallel side by side, the single-row components comprise an outer frame 1, the outer frame 1 is a box structure with an open top end, a touch pad 2 is sleeved at an opening at the top end of the outer frame 1, a plurality of contact holes 3 are uniformly arranged on the touch pad 2, a cavity frame 5 is sleeved in an inner cavity of the outer frame 1, a plurality of through holes matched with the contact holes 3 are uniformly arranged on the cavity frame 5, the through holes and the contact holes 3 are in one-to-one correspondence, an air storage device 4 matched with the contact holes 3 is arranged at the top end of the cavity frame 5, support columns 7 matched with the air storage device 4 are arranged in the through holes, the support columns 7 are of a T-shaped structure, the lengths of all the support columns 7 are different, and the lengths of all the support columns 7 are sequentially, the bottom end of a supporting column 7 is connected with a piezoelectric vibrator 6 through a screw 9, one end, far away from the supporting column 7, of the piezoelectric vibrator 6 is installed on the inner cavity wall of the outer frame 1 through a hexagon socket head cap screw 8, all the piezoelectric vibrators 6 are arranged in parallel, the lengths of all the piezoelectric vibrators 6 are different, the piezoelectric vibrators 6 are subjected to bending deformation due to inverse piezoelectric effect, the supporting column 7 pushes the gas storage device 4 to be subjected to elastic deformation under the action of force, and then the contact holes 3 are protruded to form braille contacts, so that the braille contacts are convenient for a blind person to use; the whole strain structure is simple, stress change is obvious, response speed is greatly improved, the use under most environmental conditions can be met, and the application is very convenient; in addition, the whole device can realize the display of multiple lines of characters and pictures by integrating a plurality of single-row components;
The gas storage device 4 comprises a plurality of gas cavities 43 matched with the contact holes 3 and the through holes, the gas cavities 43 and the contact holes 2 are in one-to-one correspondence, the top ends of the gas cavities 43 are provided with upper films 41 matched with the contact holes 3, the bottom ends of the gas cavities 43 are provided with lower films 42 matched with the through holes and supporting columns 7, the inner cavities of the gas cavities 43 are symmetrically provided with sealing rings 44 matched with the upper films 41 and the lower films 42 respectively, the sealing rings 44 are made of rubber materials, the piezoelectric vibrator 6 is bent and deformed due to inverse piezoelectric effect, the supporting columns 7 push the lower films 42 to be elastically deformed under the action of force, so that the pressure intensity in the gas cavities 43 is increased, the upper films 41 are pushed to be elastically deformed and bent upwards to protrude the contact holes 3, braille contacts are formed, the use by blind persons is convenient, the whole strain structure is simple, the response speed is greatly improved, the use under most environmental conditions can be met, and the application is very convenient.
Example 2
Referring to fig. 4-5, the difference from example 1 is: the piezoelectric vibrator 6 comprises a piezoelectric ceramic piece 61 and a copper substrate 62, two ends of the copper substrate 62 are respectively connected with an inner hexagon bolt 8 and a screw 9, the upper end and the lower end of the copper substrate 62 are symmetrically provided with the piezoelectric ceramic pieces 61, the piezoelectric vibrator 6 formed by piezoelectric ceramics is used as a power element, a piezoelectric driving point display device which is long in service life and energy-saving is formed, stress change of the piezoelectric vibrator of a cantilever beam structure is obvious, response speed is greatly improved, and the problems that an existing electromagnetic Braille point display device is large in power consumption, generates heat and has electromagnetic interference are solved.
Working principle of examples 1-2: piezoelectric vibrator 6 takes place bending deformation because inverse piezoelectric effect, and support column 7 promotes film 42 under the effect of force and takes place elastic deformation, leads to the increase of pressure in air cavity 43 to promote film 41 and take place elastic deformation kickup, outstanding contact hole 3 forms the braille contact, the blind person of being convenient for uses, whole strain simple structure, and change in stress is obvious, makes response speed promote by a wide margin, and can satisfy the use under most environmental condition, and it is very convenient to use.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides a piezoelectricity cantilever pneumatic type braille point display, its characterized in that, includes a plurality of single-row components, all single-row components are parallel arrangement side by side, and single-row components include frame (1), frame (1) is the open box structure in top, and the top opening part cover of frame (1) is equipped with touch pad (2), even being equipped with a plurality of contact holes (3) on touch pad (2), the inner chamber endotheca of frame (1) is equipped with chamber frame (5), even being equipped with on chamber frame (5) a plurality of and contact hole (3) matched with through-hole, be the relation of one-to-one between through-hole and contact hole (3), the top of chamber frame (5) is equipped with and contacts hole (3) matched with gas storage device (4), be equipped with in the through-hole with gas storage device (4) matched with support column (7), support column (7) are the T shape structure, the length of all support columns (7) differs, the length of all support columns (7) increases from left to right and arranges in proper order, and the bottom of support column (7) is passed through screw (9) and is connected piezoelectric vibrator (6), the one end that support column (7) were kept away from in piezoelectric vibrator (6) is installed on the inner chamber wall of frame (1) through hexagon socket head cap screw (8).
2. Piezoelectric cantilever pneumatic braille display according to claim 1, characterized in that all the piezoelectric vibrators (6) are arranged parallel to each other.
3. Piezoelectric cantilever pneumatic braille display according to claim 2, characterized in that all the piezoelectric vibrators (6) have different lengths.
4. The piezoelectric cantilever pneumatic braille point display device according to claim 1, characterized in that the outer frame (1) is made of acrylic plate material.
5. The piezoelectric cantilever pneumatic braille point display according to any one of claims 1-4, characterized in that the gas storage device (4) comprises a plurality of gas chambers (43) which are matched with the contact holes (3) and the through holes, the top ends of the gas chambers (43) are provided with upper films (41) which are matched with the contact holes (3), and the bottom ends of the gas chambers (43) are provided with lower films (42) which are matched with the through holes and the supporting columns (7).
6. A piezoelectric cantilever pneumatic braille display according to claim 5, characterized in that there is a one-to-one correspondence between the air cavities (43) and the contact holes (2).
7. The piezoelectric cantilever pneumatic braille point display according to claim 5, characterized in that the inner cavity of the air cavity (43) is provided with sealing rings (44) which are respectively matched with the upper film (41) and the lower film (42) in an up-and-down symmetry manner.
8. The piezoelectric cantilever pneumatic braille display according to claim 7, characterized in that the sealing ring (44) is made of rubber.
9. The piezoelectric cantilever pneumatic braille point display device according to claim 8, characterized in that the piezoelectric vibrator (6) comprises a piezoelectric ceramic piece (61) and a copper substrate (62), wherein the two ends of the copper substrate (62) are respectively connected with an inner hexagon bolt (8) and a screw (9), and the upper and lower ends of the copper substrate (62) are symmetrically provided with the piezoelectric ceramic piece (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011256769.1A CN112258943A (en) | 2020-11-11 | 2020-11-11 | Piezoelectric cantilever pneumatic braille point display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011256769.1A CN112258943A (en) | 2020-11-11 | 2020-11-11 | Piezoelectric cantilever pneumatic braille point display |
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| CN112258943A true CN112258943A (en) | 2021-01-22 |
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| CN202011256769.1A Pending CN112258943A (en) | 2020-11-11 | 2020-11-11 | Piezoelectric cantilever pneumatic braille point display |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10349100A1 (en) * | 2003-10-17 | 2005-05-19 | Metec Ingenieur-Ag | Multiple point raster for tactile display uses piezoelectric actuators which bend when energized and move knee-joint levers with flexures pushing round-headed pins from retracted to extended position |
| CN104408994A (en) * | 2014-11-11 | 2015-03-11 | 浙江理工大学 | Delaminated electromagnetic braille alphabet display device and braille alphabet reader |
| CN111402686A (en) * | 2020-05-09 | 2020-07-10 | 长春大学 | Cam piston type braille point display |
| CN111524425A (en) * | 2020-05-09 | 2020-08-11 | 长春大学 | Piezoelectric resonance type flexible point display device |
-
2020
- 2020-11-11 CN CN202011256769.1A patent/CN112258943A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10349100A1 (en) * | 2003-10-17 | 2005-05-19 | Metec Ingenieur-Ag | Multiple point raster for tactile display uses piezoelectric actuators which bend when energized and move knee-joint levers with flexures pushing round-headed pins from retracted to extended position |
| CN104408994A (en) * | 2014-11-11 | 2015-03-11 | 浙江理工大学 | Delaminated electromagnetic braille alphabet display device and braille alphabet reader |
| CN111402686A (en) * | 2020-05-09 | 2020-07-10 | 长春大学 | Cam piston type braille point display |
| CN111524425A (en) * | 2020-05-09 | 2020-08-11 | 长春大学 | Piezoelectric resonance type flexible point display device |
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