CN108447351B - A kind of aobvious module of actuated by cams formula braille point - Google Patents
A kind of aobvious module of actuated by cams formula braille point Download PDFInfo
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- CN108447351B CN108447351B CN201810076735.0A CN201810076735A CN108447351B CN 108447351 B CN108447351 B CN 108447351B CN 201810076735 A CN201810076735 A CN 201810076735A CN 108447351 B CN108447351 B CN 108447351B
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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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Abstract
A kind of aobvious module of actuated by cams formula braille point, including braced frame, touch panel, contact pilotage, camshaft and driver are constituted, the touch panel is mounted on the upper end of the braced frame, the touch panel is equipped with three rows two and arranges totally six contact pilotage mounting holes, the contact pilotage is provided with three rows two column and totally six pieces and is mounted in corresponding contact pilotage mounting hole, every piece of contact pilotage and contact pilotage mounting hole are in clearance fit, a camshaft is arranged in each column contact pilotage lower part, cam there are three being set on every camshaft, six pieces of contact pilotages and six cams correspond, the lower end of every piece of contact pilotage remains with the profile of respective cams and contacts；The camshaft is installed in rotation in braced frame, and the camshaft is connect with driver.The present invention drives six pieces of stylus-shapeds into 64 kinds of contact arrangement modes of braille one " side " using a pair of cams axis, is the important composition unit that braille point shows device and Braille alphabet reading device, the Braille of all languages and form of ownership is suitble to generate.
Description
Technical field
The present invention relates to mechanical engineerings and electronic engineering technical field, aobvious more particularly, to a kind of actuated by cams formula braille point
Module.
Background technique
It is shown according to the World Health Organization (WHO) statistics in 2010, the whole world about 39,000,000 blind persons, and big portion
Divide blindman in low income and middle income country, Chinese blind community is the first in the world, is had more than 600 by the end of 2012
The quantity of ten thousand blind persons to the year two thousand twenty China blind person will be significantly increased.Therefore, for so huge and important blind community, society
Need to give them care about and support, while they also there is an urgent need to obtain good academic environment and culture and education.
Blind person equally learns and reads without image of Buddha ordinary person, and the mode that they read includes sense of hearing reading, touches and read, and according to
Reading by the tactile of finger has that reading rate is fast, information differentiating degree is good, is course and blind person that school for the blind must be taught
It is exchanged with the external world, one of the ability that must be grasped of human communication, is the main way that blind person obtains knowledge and information at this stage
Diameter.
Books printed in braille are the primary publications that blind person appreciates and reads, but quantity is few, and fabrication cycle is long, and dedicated paper is high
Expensive, the various complexity of process, consuming time is long for production, and general blind person's books will pass through translation, check and correction, template construct, printing, arrangement
With the making steps such as bookbinding, therefore books printed in braille price is higher, and information lag, information content is small, and volume is heavy, carries pole not
It is convenient.With the progress of society and the development of science and technology, improving the reading and study convenience of blind person, increasingly by prosperity state, the world
Family is paid attention to, and the various reading devices for blind person continuously emerge.
Braille is the alphabetic character for aiming at blind person's touching reading, writing, and books printed in braille and Braille alphabet reading device are all brailles
The presentation carrier of braille.The text for blind person's touching reading occurred earliest in the world is 1517 by Spain's Francis
Lattice Lucas (Francesco Lucas) invention, but the problem of it solves only touching reading, do not solve the problems, such as writing, it is early
It has not used.And the text that whole world braille is used in conjunction with now is born in 1824, is Frenchman Louis Blair
(Louis Braille) by night text inspiration and the braille lettering system that the Latin alphabet is replaced with salient point created, Chinese mesh
It is preceding that there has also been braille national standard (GB/T15720-2008).Braille contact driving mechanism is the important structure of Braille alphabet reading device
At researcher both domestic and external has developed the braille contact driving mechanism of different driving form based on different principle, and main includes pressure
The driving methods such as electroceramics, electro photoluminescence, memorial alloy, pneumatic, temperature control, electromagnetism and other new materials, wherein piezoelectric ceramics
It is based on vibratory stimulation that the braille point of formula, which shows device, and electro photoluminescence formula braille point, which shows device, to be stimulated based on electric current, and Temperature Control Type braille point is aobvious
Device is based on thermal stimulus, and memorial alloy formula, pneumatic type and electromagnetic type are based on Pressure stimulation.
Although the braille point that domestic and foreign scholars have developed various drive forms shows device, more successful braille is applied at present
The aobvious driving mechanism of point only has piezoelectric ceramic type and electromagnetic type.1979, the Telesensory Systems company in the U.S. had developed
One dynamic braille shows electronic equipment (VersaBraille), and the device is using piezoelectric bimorph and outstanding using " L " type
Arm girder structure is as salient point driving mechanism, so as to form refreshable Braille.Hereafter, the company of Japan and Germany uses
Piezoelectric ceramic piece develops the braille display device of 20 sides, 40 sides etc., continues to optimize structure, keeps the performance of piezoelectric ceramic piece more steady
Fixed, the aobvious device device power consumption of the braille point of piezoelectric ceramic type is low, refresh rate is fast, light weight, can provide biggish support force, but
Shortcomings: production and processing technology is cumbersome, and part manufacturing cost is high, limits piezoelectric ceramic type braille point and shows the universal of device.Electricity
Magnetic-type braille point shows the characteristic that device mainly utilizes electromagnetic coil that there is the generation magnetic field that is powered, power-off magnetic field to disappear, driving braille touching
The protrusion and decline of point form Braille.Early 20th century, Danjiang University's machinery and the electromechanical engineering system of TaiWan, China
Fung-Huei Yeh et al. has developed a kind of aobvious device device of electromagnetic type braille point, since electromagnetic type braille contact driving mechanism has
Have refreshing frequency fast, high reliablity, it is competitively priced, convenient for manufacture and maintenance, while the advantages that be capable of providing biggish support force,
Hereafter lasting research has been obtained in some countries such as South Korea, China, but whole device current needs are big, power consumption is high, needs to install additional
Cooling device, volume are larger.
Summary of the invention
In order to overcome deficiency existing for the driving mechanism of existing braille contact, the present invention provides a kind of actuated by cams formula brailles
The aobvious module of point, it is the important composition unit that braille point shows device and Braille alphabet reading device which, which shows module, is suitble to all languages
The Braille of kind and form of ownership generates.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of aobvious module of actuated by cams formula braille point, including braced frame, touch panel, contact pilotage, camshaft and driver are constituted,
The touch panel is mounted on the upper end of the braced frame, and the touch panel is equipped with three rows two and arranges totally six contact pilotage mounting holes, described
Contact pilotage is provided with three rows two column and totally six pieces and is mounted in corresponding contact pilotage mounting hole, and every piece of contact pilotage and contact pilotage mounting hole are in gap
A camshaft is arranged below each column contact pilotage in cooperation, sets that there are three cam, six pieces of contact pilotages and six cams one on every camshaft
One is corresponding, and the lower end of every piece of contact pilotage remains with the profile of respective cams and contacts；The camshaft is installed in rotation on branch
On support frame frame, the camshaft and driver are connected directly or by transmission mechanism；
The camshaft is gone up and down in corresponding contact pilotage mounting hole in rotation by actuated by cams contact pilotage thereon
Movement, when the lower end of contact pilotage is located at when closely stopping on profile of cam, contact pilotage is in lower dead center, when the lower end of contact pilotage is located at cam
When far stopping on profile, contact pilotage is in top dead centre；When contact pilotage is in lower dead center, the upper surface of contact pilotage is concordant with plane on touch panel,
A concave point for forming Braille, when contact pilotage is in top dead centre, the upper surface of contact pilotage is higher by plane on touch panel, forms braille
One salient point of character, the maximum lift of the cam are equal to the bump height of Braille；
Every camshaft rotates a circle 360 degree of settings, eight stop positions, and the circumferentially-spaced angle between adjacent stop position is
45 degree, camshaft rotates every time terminates that one of stop position must be made to be in position directly above；
Three cams on same root camshaft, chamfered shape and the profile corresponding relationship on the camshaft, it is necessary to protect
The card each stop position of camshaft is corresponded to profile or far stops on profile in closely stopping for three cams, when some of camshaft is stopped
When stop bit is in surface, three pieces of contact pilotages above the camshaft are in lower dead center under the action of three cams or above stop
Point makes the upper end of three pieces of contact pilotages form a kind of male-female arrangement mode of the column braille contact；And, it is necessary to assure in camshaft
In eight stop positions to rotate a circle, three pieces of contact pilotages that three cams just drive it are formed by column braille contact completion
Eight kinds of different pattern of rows and columns；
A braille point of the invention shows one " side " that module shows Braille, one " side " of Braille be by
Three rows two column are formed by six braille contact arrangements when totally six pieces of contact pilotages are in top dead centre or lower dead center respectively and form together；
Two camshafts are rotated by 360 ° in range and cooperate respectively, can complete all 64 kinds of " side " braille contact not
Same pattern of rows and columns.
Further, three cams on same root camshaft, two of them cam face is identical, each own rise and
Backhaul, far angle of repose and near angle of repose are 135 degree, and rise angle and backhaul angle are 45 degree, corresponding on the profile that far stops
Four stop positions of camshaft correspond to camshaft four additional stop position on the profile that closely stops；Third cam is that there are two rises
And backhaul, two profiles that far stop are arranged symmetrically and far angle of repose, near angle of repose, rise angle, backhaul angle are 45 degree, Mei Geyuan
Stop and profile and closely stops each two stop positions of corresponding camshaft of profile.
As another embodiment, three cams on same root camshaft, two of them cam face is identical, respectively
There are two rise and backhaul, two profiles that far stop are arranged symmetrically and far angle of repose, near angle of repose, rise angle, backhaul angle are
45 degree, each far stop profile and each two stop positions of corresponding camshaft of profile of closely stopping；Third cam is that have a rise
And backhaul, far angle of repose and near angle of repose are 135 degree, and rise angle and backhaul angle are 45 degree, and the profile that far stops is corresponding
Four stop positions of camshaft, the profile that closely stops correspond to camshaft four additional stop position.
Further, the lower part of the touch panel is equipped with a groove, institute below every row or each column contact pilotage mounting hole
Groove to be stated to be connected to corresponding contact pilotage mounting hole, the top of the contact pilotage is cooperated using cylindrical structure and with contact pilotage mounting hole,
The lower part of the contact pilotage is cooperated using tetragonal body structure and with groove.
Further, the touch panel and the braced frame are integrally formed, and can also be linked together after independent design.
Further, the braced frame is equipped with cam shaft mounting hole, and the rear and front end of the camshaft is installed respectively
In corresponding cam shaft mounting hole.
Beneficial effects of the present invention are mainly manifested in: since the structure uses mechanical actuated by cams, low in energy consumption, volume
It is small, light-weight, so that braille reader or braille point is shown device and be easy to be generalized popularization, there is preferable social benefit and apply valence
Value.
Detailed description of the invention
Fig. 1 is the installation diagram of touch panel of the invention, braced frame, contact pilotage, camshaft.
Fig. 2 is touch panel and the integrated structure chart of braced frame.
Fig. 3 is the assembling relationship figure of contact pilotage, camshaft.
Fig. 4 is the chamfered shape of three cams and profile corresponding relationship on same camshaft.
Fig. 5 is second of the chamfered shape and profile corresponding relationship of three cams on same camshaft.
Fig. 6 is the assembling figure that two groups of actuated by cams formula braille points show module.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig.1~Fig. 6, a kind of actuated by cams formula braille point show module, including braced frame 101, touch panel 601, contact pilotage,
Camshaft and driver are constituted, and the touch panel 101 is mounted on the upper end of the braced frame, and the touch panel 601 is equipped with three rows
Two column totally six contact pilotage mounting holes, the contact pilotage are provided with three rows two column and totally six pieces and are mounted in corresponding contact pilotage mounting hole,
Every piece of contact pilotage and contact pilotage mounting hole are in clearance fit, and a camshaft is arranged below each column contact pilotage, and every camshaft is equipped with three
A cam, six pieces of contact pilotages and six cams correspond, and the lower end of every piece of contact pilotage remains with the profile of respective cams and contacts；
The camshaft is installed in rotation in braced frame, and the camshaft and driver are connected directly or by transmission mechanism；
The camshaft is gone up and down in corresponding contact pilotage mounting hole in rotation by actuated by cams contact pilotage thereon
Movement, when the lower end of contact pilotage is located at when closely stopping on profile of cam, contact pilotage is in lower dead center, when the lower end of contact pilotage is located at cam
When far stopping on profile, contact pilotage is in top dead centre；When contact pilotage is in lower dead center, the upper surface of contact pilotage is concordant with plane on touch panel,
A concave point for forming Braille, when contact pilotage is in top dead centre, the upper surface of contact pilotage is higher by plane on touch panel, forms braille
One salient point of character, the maximum lift of the cam are equal to the bump height of Braille；
Every camshaft rotates a circle 360 degree of settings, eight stop positions, and the circumferentially-spaced angle between adjacent stop position is
45 degree, camshaft rotates every time terminates that one of stop position must be made to be in position directly above；
Three cams on same root camshaft, chamfered shape and the arrangement on the camshaft, it is necessary to assure cam
The each stop position of axis is corresponded to profile or far stops on profile in closely stopping for three cams, at some stop position of camshaft
At surface, three pieces of contact pilotages above the camshaft are in lower dead center or top dead centre under the action of three cams, make
The upper end of three pieces of contact pilotages forms a kind of male-female arrangement mode of the column braille contact；And, it is necessary to assure it is rotated in camshaft
In one week eight stop position, three pieces of contact pilotages that three cams just drive it are formed by the column braille contact and complete eight kinds
Different pattern of rows and columns；
A braille point of the invention shows one " side " that module shows Braille, one " side " of Braille be by
Three rows two column are formed by six braille contact arrangements when totally six pieces of contact pilotages are in top dead centre or lower dead center respectively and form together；
Two camshafts are rotated by 360 ° in range and cooperate respectively, can complete all 64 kinds of " side " braille contact not
Same pattern of rows and columns.
Further, the lower part of the touch panel 601 is equipped with a groove below every row or each column contact pilotage mounting hole
1100, the groove 1100 is connected to corresponding contact pilotage mounting hole, and the top of the contact pilotage uses cylindrical structure and and contact pilotage
Mounting hole cooperation, the lower part of the contact pilotage are cooperated using tetragonal body structure and with groove 1100.
Further, the touch panel 601 is integrally formed with the braced frame 101, can also be connected to one after independent design
It rises.
Further, the braced frame 101 is equipped with cam shaft mounting hole, and the rear and front end of the camshaft is pacified respectively
In corresponding cam shaft mounting hole.
The present invention be it is a kind of with six pieces of contact pilotages formed convex-concave point be one " side " implementation structure, specifically retouched below
It states.
As shown in Figure 1, Figure 2, Figure 3 shows, two camshafts 401,402 are mounted in braced frame 101, the contact pilotage 201,
202, it 203 is mounted in the contact pilotage mounting hole 701,702,703 of touch panel 601, the contact pilotage 204,205,206 is mounted on touch panel
In 601 contact pilotage mounting hole 704,705,706, contact pilotage and contact pilotage mounting hole cooperate in microgap, and contact pilotage 201,202,203 is convex
Wheel 301,302,303 driving under can be gone up and down in mounting hole 701,702,703, contact pilotage 204,205,206 cam 304,
305, it can be gone up and down in mounting hole 704,705,706 under 306 driving, contact pilotage mounting hole plays limit to the elevating movement of contact pilotage
And guiding role.In the present embodiment, cam 301,302,303 is arranged on camshaft 401, and the setting of cam 304,305,306 exists
On camshaft 402.
The lower end of the contact pilotage remains with the profile of the cam and contacts that cam passes motion to touching by rotation
Needle, driving contact pilotage generate elevating movement in its contact pilotage mounting hole, and the curved profile of cam determines the elevating movement rule of contact pilotage.
When the lower end of contact pilotage is located at when closely stopping on profile of cam, contact pilotage is in lower dead center, when the lower end of contact pilotage is located at the remote of cam
Stop profile when, contact pilotage is in top dead centre.
One " side " of Braille, it is corresponding convex when being in top dead centre or bottom dead center position respectively by six pieces of contact pilotages
Point, concave point are arranged together composition by three rows two column, can be formed by multiple " sides " are side-by-side by needed for design requirement
The braille point of quantity shows device.
Setting contact pilotage mounting hole 701 corresponding with Braille points on the touch panel 601,702,703,704,705,
706, the size and arrangement form of the contact pilotage mounting hole will meet requirement of the Braille to salient point size and spacing, each braille
" side " Braille is arranged in the aobvious module of point.
The cam quantity being arranged on every camshaft is half " side ", i.e. camshaft actuated one column, three pieces of contact pilotages are convex
The spacing of wheel is corresponding with the spacing of contact pilotage mounting hole, and the maximum lift of cam is equal to the maximum height of the braille contact.
Camshaft 401 is mounted in the cam shaft mounting hole 901 of 101 side of braced frame by bearing 801, camshaft
402 are mounted in the cam shaft mounting hole 902 of 101 other side of braced frame by bearing 802, camshaft 401 and 402 it is another
End is separately mounted in the cam shaft mounting hole 1001,1002 of braced frame 101, and cam shaft mounting hole 1001 and camshaft are installed
Hole 901 is coaxial, and cam shaft mounting hole 1002 and cam shaft mounting hole 902 are coaxial.Camshaft 401 and 402 can also use cantilever
Support.
In this embodiment, the camshaft is designed as a whole with cam, naturally it is also possible to is fixed on after making respectively
Together, respectively by driver drives, driver sets up separately in the two sides of braced frame 101 for the rotation of camshaft 401,402, can be
Stepper motor or the output body driving of other torques, driver pass through gear pair 501 and 502 respectively and connect with camshaft 401,402,
Driver can also be connect with camshaft using other transmissions.
Every camshaft, which often rotates a circle, eight stop positions, and the circumferentially-spaced angle of the camshaft of each stop position is 45
Degree.To feel clear and legible when making blind person's touch contact, each camshaft must assure that wherein eight stop positions when stopping every time
In a stop position be on position directly above, all eight stop positions of camshaft should all make each touching above the camshaft
Needle is at top dead centre under cam effect or down toward a position.
For every camshaft when arranging three cams, the chamfered shape of cam must have stringent relative position, guarantee convex
Any one stop position of eight stop positions of wheel shaft be in right above when, the effect of a column contact pilotage above the camshaft in cam
Under be in lower dead center or top dead centre, form a kind of male-female arrangement mode of the column braille contact, and guarantee the every rotation of camshaft
One week, eight stop positions can traverse all eight kinds different male-female arrangement modes of the column braille contact.
As shown in figure 4, present embodiment illustrates most representative one group of cam profile and on camshaft
Arrangement, three cams on same root camshaft, two of them cam 301,302 shapes are identical, each to have a rise by oneself
And backhaul, far angle of repose and near angle of repose are 135 degree, and rise angle and backhaul angle are 45 degree, right on the profile that far stops
Four stop positions of camshaft are answered, correspond to camshaft four additional stop position on the profile that closely stops；There are two push away third cam 303
Journey and backhaul, two profiles that far stop are arranged symmetrically and far angle of repose, near angle of repose, rise angle, backhaul angle are 45 degree, each
Remote profile and each two stop positions of corresponding camshaft of profile of closely stopping of stopping.The corresponding pass of the contour feature of three cams and position
System shows such as table 1, and in table 1, " 1 " represents cam and far stops profile, and " 0 " represents cam and closely stops profile, and the column in table 1 indicate convex
Three cam contour point features and its corresponding relationship corresponding to each stop position of wheel shaft, the row in table 1 indicate each camshaft
Cam contour point feature and its corresponding relationship corresponding to eight stop positions.Table 2 shows braille corresponding with table 1 contact row
Column are schemed, and each column in table 2 indicate a column contact pilotage institute when stop position of camshaft is in surface above the camshaft
A kind of braille contact arrangement mode formed, eight column in table 2 indicate camshafts in eight stop positions above the camshaft
One column contact pilotage is formed by different pattern of rows and columns of eight kinds of braille contacts, wherein "○" indicates the concave point of Braille, "●" table
Show the salient point of Braille.
Table 1
| Cam 301 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| Cam 302 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 |
| Cam 303 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 |
Table 2
| Contact 1 | ○ | ○ | ○ | ○ | ● | ● | ● | ● |
| Contact 2 | ○ | ○ | ● | ● | ● | ● | ○ | ○ |
| Contact 3 | ○ | ● | ● | ○ | ○ | ● | ● | ○ |
As shown in figure 5, another embodiment as camshaft, shows its cam profile and relative position is closed
It is three cams on same camshaft, two of them cam 301‘、302‘Chamfered shape is identical, respectively there are two rise and return
Journey, two profiles that far stop are arranged symmetrically and far angle of repose, near angle of repose, rise angle, backhaul angle are 45 degree, each far stop
Profile and each two stop positions of corresponding camshaft of profile of closely stopping；Third cam 303’Only one rise and backhaul, it is remote
Angle of repose and near angle of repose are 135 degree, and rise angle and backhaul angle are 45 degree, and the profile that far stops corresponds to camshaft four and stops
Stop bit, the profile that closely stops correspond to camshaft four additional stop position.The contour feature and position corresponding relationship of three cams are such as
Table 3 shows, in table 3, " 1 " represents cam and far stops profile, and " 0 " represents cam and closely stops profile, and the column in table 3 indicate camshaft
Three cam contour point features and its corresponding relationship corresponding to each stop position, the row in table 3 indicate each camshaft eight
Cam contour point feature and its corresponding relationship corresponding to stop position.Table 4 shows braille contact arrangement corresponding with table 1
Scheme, each column in table 4 indicate a column contact pilotage institute shape when stop position of camshaft is in surface above the camshaft
At a kind of braille contact arrangement mode, eight column in table 4 indicate one of camshafts in eight stop positions above the camshaft
Column contact pilotage is formed by different pattern of rows and columns of eight kinds of braille contacts, wherein "○" indicates the concave point of Braille, and "●" indicates
The salient point of Braille.
Table 3
| Cam 301‘ | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 |
| Cam 302‘ | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 |
| Cam 303‘ | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
Table 4
| Contact 1‘ | ○ | ○ | ● | ● | ○ | ○ | ● | ● |
| Contact 2‘ | ○ | ● | ● | ○ | ○ | ● | ● | ○ |
| Contact 3‘ | ● | ● | ● | ● | ○ | ○ | ○ | ○ |
In each stop position of camshaft, contact pilotage is in the position of top dead centre or lower dead center, so as to form half " side "
A kind of arrangement of braille contact.Every 45 degree of the rotation of camshaft, contact pilotage is formed by braille contact and just converts a kind of pattern of rows and columns, convex
Eight stop positions of wheel shaft complete all eight kinds of different pattern of rows and columns of half " side " braille contact, such as in this embodiment, table 2
Each column be contact arrangement mode corresponding with each column of table 1, each column of table 4 are contacts corresponding with each column of table 3
Pattern of rows and columns.Two neighboring camshaft 401,402 is rotated by 360 ° in range and cooperates respectively, can complete one it is whole
The different pattern of rows and columns of 64 kinds of the braille contact of " side ".
It should be pointed out that in figures 4 and 5 and in corresponding table 1 and table 3, three cams are cloth in order
It sets on camshaft, in the specific implementation, the cam 301,302,303 putting in order on camshaft can arbitrarily mutually
It changes, the cam 301‘、302‘、303’Putting in order on camshaft can arbitrarily exchange, but outline mode and correspondence
Relationship cannot change, and be formed by putting in order for braille contact and change correspondingly, but eight stop positions of camshaft remain to complete it is blind
The different pattern of rows and columns of eight kinds of Chinese character.
In Fig. 4 and Fig. 5, in the specific implementation, the profile contacts of contact pilotage lower part and cam when to make contact pilotage be in top dead centre
Reliably, the far angle of repose of three cams can be designed bigger.
It may also be noted that in figures 4 and 5, being merely given as two kinds of optimal implementations of three cams on camshaft
Mode, it is all using this kind of camshaft actuated stylus-shaped at the invention of braille contact in the scope of this patent.
As shown in fig. 6, showing the assembling figure of module for two groups of actuated by cams formula braille points of the invention, driver is stepping electricity
Machine 1200, in the embodiment, for convenience of arranging, stepper motor is separately positioned on 101 two sides of braced frame, and passes through gear drive
Mechanism 501 and 502 and cam axis connection.In the specific implementation, stepper motor 1200 also can be set in braced frame 101 1
Side, stepper motor 1200 can also directly with cam axis connection.
The effect of the aobvious module of braille point of the invention is the realization of Braille, and braille reader or braille point are shown on device most
Important component units, small power consumption, cheap, safe and reliable braille point show module to braille reader or braille point
It shows the exploitation of device and popularizes and provide possibility, there is important value.
It should be noted that this specific embodiment is only not limited to its protection to the exemplary illustration that the present invention is done
Range, any unsubstantiality are altered or modified all within protection scope of the present invention.
Claims (6)
1. a kind of actuated by cams formula braille point shows module, it is characterised in that: including braced frame, touch panel, contact pilotage, camshaft and drive
Dynamic device is constituted, and the touch panel is mounted on the upper end of the braced frame, and the touch panel is equipped with three rows two and arranges totally six contact pilotage peaces
Hole is filled, the contact pilotage is provided with three rows two column and totally six pieces and is mounted in corresponding contact pilotage mounting hole, and every piece of contact pilotage and contact pilotage are pacified
Filling hole is in clearance fit, and a camshaft is arranged below each column contact pilotage, is set on every camshaft there are three cam, six pieces of contact pilotages with
Six cams correspond, and the lower end of every piece of contact pilotage remains with the profile of respective cams and contacts；The camshaft can be rotated
Ground is installed on the support frame, and the camshaft is connect with driver；
The camshaft carries out elevating movement in corresponding contact pilotage mounting hole by actuated by cams contact pilotage thereon in rotation,
When the lower end of contact pilotage is located at when closely stopping on profile of cam, contact pilotage is in lower dead center, when the lower end of contact pilotage is located at the remote of cam
When stopping on profile, contact pilotage is in top dead centre；When contact pilotage is in lower dead center, the upper surface of contact pilotage is concordant with plane on touch panel,
A concave point for forming Braille, when contact pilotage is in top dead centre, the upper surface of contact pilotage is higher by plane on touch panel, forms braille
One salient point of character, the maximum lift of the cam are equal to the bump height of Braille；
Every camshaft rotates a circle 360 degree of settings, eight stop positions, and the circumferentially-spaced angle between adjacent stop position is 45 degree；
Camshaft rotates every time terminates that one of stop position must be made to be in position directly above；
Arrangement of three cams on the camshaft on same root camshaft, chamfered shape and the profile on the camshaft
Corresponding relationship, it is necessary to assure each stop position of camshaft is corresponded to profile or far stops on profile in closely stopping for three cams,
When some stop position of camshaft is in surface, three pieces of contact pilotages above the camshaft are equal under the action of three cams
In lower dead center or top dead centre, the upper end of three pieces of contact pilotages is made to form a kind of male-female arrangement mode of the column braille contact；Moreover,
It must assure that in eight stop positions that camshaft rotates a circle, three pieces of contact pilotages that three cams just drive it are formed by
Complete eight kinds of different pattern of rows and columns in the column braille contact；
One " side " of Braille is formed by when totally six pieces of contact pilotages are in top dead centre or lower dead center respectively by three rows two column
Six braille contact arrangements form together；Two camshafts cooperate in respective be rotated by 360 ° in range, can complete one
All 64 kinds of different pattern of rows and columns of a " side " braille contact.
2. a kind of actuated by cams formula braille point as described in claim 1 shows module, it is characterised in that: on same root camshaft
Three cams, two of them cam face is identical, and each own rise and backhaul, far angle of repose and near angle of repose are
135 degree, rise angle and backhaul angle are 45 degree, and four stop positions of camshaft are corresponded on the profile that far stops, are closely stopped on profile
Corresponding camshaft four additional stop position；Third cam is there are two rise and backhaul, and two profiles that far stop are arranged symmetrically
And far angle of repose, near angle of repose, rise angle, backhaul angle are 45 degree, each far stop profile and each correspondence of profile of closely stopping it is convex
Two stop positions of wheel shaft.
3. a kind of actuated by cams formula braille point as described in claim 1 shows module, it is characterised in that: on same root camshaft
Three cams, two of them cam face is identical, and respectively there are two rise and backhaul, two profiles that far stop are arranged symmetrically and far
Angle of repose, near angle of repose, rise angle, backhaul angle are 45 degree, and each far stop profile and each corresponding camshaft of profile that closely stops
Two stop positions；Third cam is that have a rise and backhaul, and far angle of repose and near angle of repose are 135 degree, rise angle
It is 45 degree with backhaul angle, the profile that far stops corresponds to four stop positions of camshaft, and the profile that closely stops corresponds to camshaft other four
A stop position.
4. a kind of actuated by cams formula braille point as described in claims 1 to 3 any one shows module, it is characterised in that: described
The lower part of touch panel is equipped with a groove below every row or each column contact pilotage mounting hole, and the groove is installed with corresponding contact pilotage
Hole connection, the top of the contact pilotage are cooperated using cylindrical structure and with contact pilotage mounting hole, and the lower part of the contact pilotage is using four directions
Body structure and with groove cooperate.
5. a kind of actuated by cams formula braille point as described in claims 1 to 3 any one shows module, it is characterised in that: described
Touch panel and the braced frame are integrally formed, and can also be linked together after independent design.
6. a kind of actuated by cams formula braille point as described in claims 1 to 3 any one shows module, it is characterised in that: described
Braced frame is equipped with cam shaft mounting hole, and the rear and front end of the camshaft is separately mounted to corresponding cam shaft mounting hole
It is interior.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810076735.0A CN108447351B (en) | 2018-01-26 | 2018-01-26 | A kind of aobvious module of actuated by cams formula braille point |
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| CN201810076735.0A CN108447351B (en) | 2018-01-26 | 2018-01-26 | A kind of aobvious module of actuated by cams formula braille point |
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| CN108447351B true CN108447351B (en) | 2019-12-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11436943B2 (en) * | 2018-04-24 | 2022-09-06 | Polymer Braille Inc. | Magnetically programmable actuators for tactile conveyance of information |
| CN109192008B (en) * | 2018-10-15 | 2020-10-20 | 浙江理工大学 | Low-energy-consumption electromagnetic pull rod type braille dot display module |
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