CN201812402U - Braille concave-convex point control structure and line-by-line drive full-page Braille point display - Google Patents
Braille concave-convex point control structure and line-by-line drive full-page Braille point display Download PDFInfo
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- CN201812402U CN201812402U CN 201020192511 CN201020192511U CN201812402U CN 201812402 U CN201812402 U CN 201812402U CN 201020192511 CN201020192511 CN 201020192511 CN 201020192511 U CN201020192511 U CN 201020192511U CN 201812402 U CN201812402 U CN 201812402U
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Abstract
The utility model relates to a Braille concave-convex point control structure comprising a character ejector rod, a rod-shaped protrusion, a movable plate and a control device thereof and a character ejector rod motion control device, wherein the rod-shaped protrusion is connected with the lower end of the character ejector rod, and the character ejector rod makes up-and-down movement under the driving of the character ejector rod motion control device and the rod-shaped protrusion; the movable plate is vertical to the character ejector rod, and the bottom layer of the movable plate is provided with a groove; and the movable plate is controlled to make horizontal movement, the rod-shaped protrusion enters and comes out of the groove to drive the character ejector rod to make up-and-down movement. A line-by-line drive full-page Braille point display comprises a plurality of square modules, and each square module comprises six braille convex-concave point control structures in a module casing which are arranged according to 3 lines*2 rows; movable plates of the Braille convex-concave point control structures of the same square module are connected to form a jointly-moving movable batten; each movable batten is provided with a middle hole corresponding to the character ejector rod; in square modules on a same row, the electromagnetic components of the first, the second and the third Braille convex-concave point control structures on the same row are connected to a first drive line, a second drive line and a third drive line.
Description
Technical field
The utility model aims to provide a kind of point that e-text can be converted to the Braille convex-concave point of full page and shows device, and the technical field of genus Braille reading device specifically is a kind of control method of braille full page sags and crests and drive the apparent device of full page braille point line by line.
Background technology
The braille of whole page or leaf comprises 25 row usually, and every row can reach 40 Brailles (side), and character is represented by 8 points of 6 row that every side lines up two row.Drop at present the actual braille point that uses and show device and can only show a line character, reads very inconveniently, so it is necessary to develop the apparent device of full page braille point.Existing braille point shows device and generally adopts post rod mechanism, by piezoelectric ceramics or electromagnet (or micro motor) push rod is released panel and produces salient point, and whether the release of difference position upper ejector pin forms braille.Adopt the piezoelectric ceramics method, though little power consumption because piezoelectric ceramics itself can not provide about 0.4mm the lift rod stroke of (the GB/T15720-1995 standard is 0.2-0.5mm), needs to adopt auxiliary leverage, the result is that the plane space that takies is excessive, is difficult to realize that full page shows; Adopting electromagnet (or micro motor) mechanism can be to make the basic skills that full page point shows device, but because various factorss such as cost, power consumption also not have the apparent device of a kind of full page braille point to put it into commercial operation with the every bit restriction less than on the square plane of 2.8mm.
The future thrust that braille point shows device is to introduce the electroactive polymer technology.According to the article of the 1st phase of " science every day " November in 2009, the national Braille Press of boston, u.s.a has set up a tame braille innovation center recently, is devoted to produce under lower cost the apparent device of electronics braille point that whole page or leaf shows.The Noel H Runyon at this center is represented: " this infusive achievement of electroactive polymer technology is full maturity, can provide real solution for the manufacturing of the apparent device of braille point." Tokyo Univ Japan developed jointly out the film-type braille display that uses organic transistor, is used in the organic transistor that forms on the flexible base, board and drives the macromolecular material driver, produces or eliminate projection by the Current Control surface, forms braille.This braille display thickness can reach about 1 millimeter, and weight also only has several grams, has bright development prospect.But do not put it into commercial operation as yet at present, and cost is higher in a short time.
Summary of the invention
The purpose of this utility model provides the control method of simple, the easy to use and energy-conservation Braille convex-concave point of a kind of structure and technology and drives full page braille point line by line and shows device, and concrete technical scheme is as follows:
A kind of Braille convex-concave point control structure comprises character push rod, shaft-like outstanding, portable plate and control device thereof, character push rod motion control device;
Described shaft-like giving prominence to is connected character push rod lower end, and the character push rod moves up and down under character push rod motion control device and shaft-like outstanding drive; Described portable plate is provided with the waist hole, and the character push rod vertically passes the waist hole, is provided with and described shaft-like outstanding shape corresponding groove at the bottom of portable plate; The translation under the portable plate control device drives of described portable plate, groove moves with portable plate, and shaft-like outstanding turnover groove drives the character push rod and moves up and down in the waist hole; The length direction in waist hole is consistent with the direction of motion of portable plate; Described character push rod motion control device comprises elastic body and electromagnetic assembly, and described character push rod lower end also is provided with armature, and electromagnetic assembly passes through to the application of force of armature and then to the character push rod application of force; Described elastic body and electromagnetic assembly are opposite to character push rod application of force direction;
Salient point state for braille is an original state: described shaft-like giving prominence in the groove of portable plate, the friction of elastic body and edge, waist hole to the common application of force of character push rod under, make the character push rod keep stretching out;
First intermediateness for braille: described portable plate translation, described shaft-like outstanding quilt squeezes outside the groove of portable plate, and shaft-like outstanding plate body compressing that is subjected to the groove outside and elastic body bounce back the character push rod under the common application of force of character push rod;
Second intermediateness for braille: described portable plate travelling backwards, character push rod make the character push rod keep retraction under the elastic body and the common application of force of electromagnetic assembly;
Pit-phase for braille: described portable plate resets; Described shaft-like giving prominence to outside the groove of portable plate, and be not subjected to the pressure of portable plate; The friction of elastic body and edge, waist hole to the common application of force of character push rod under, make the character push rod keep retraction.
Described elastic body is a spring wire, and this spring wire is supported on shaft-like outstanding below; Described electromagnetic assembly comprises iron core and the solenoid that magnetic cavity and magnetic cavity below are provided with; Described character push rod is located at the magnetic cavity top, and armature is in magnetic cavity.
Described waist hole inwall is provided with the Elastic Contact face, is used for increasing edge, waist hole friction force.
Because solenoid square is inversely proportional to armature gravitation size and the two distance, distance is big more big more for the current requirements that produces gravitation, and this structure and course of action, be that armature is contacted with iron core, again to coil electricity, so only need armature and electromagnetic core are kept in touch with very little drive current.In the portable plate moving process, outstanding generation compressing moves down push rod to the groove edge under the plate to the character push rod, and the armature of character push rod bottom contacts with electromagnetic core; After above-mentioned compressing disappears,, can keep adhesive as the solenoid energising; After above-mentioned compressing disappears, as the solenoid no power, in the effect lower push rod homing of spring wire screen resilience.
A kind of full page of driving line by line braille point of above-mentioned Braille convex-concave point control structure that uses shows device, and feature is to comprise a plurality of side's modules, and each side's module is arranged formation by 6 Braille convex-concave point control structures that are located in the module housing according to 3 row * 2 row;
For square module with delegation,
The portable plate of each Braille convex-concave point control structure links to each other and constitutes a movable slats, and driven by same portable plate control device; The quantity in the waist hole on the movable slats and position are with corresponding with the character push rod in delegation side's module, and described character push rod is by flexible in the corresponding waist hole;
For the square module of same row,
Be in the 1st, 2 and 3 Braille convex-concave point control structures of same row in each side's module, its electromagnetic assembly is connected on respectively on the 1st, the 2 and 3 identical drive wires.
Described portable plate control device is to rotate the replacing of finishing the full page literal after a week by a motor-driven cam set; Cam set is provided with the cam with square module line number equal number, and each cam has and the identical groove of square module line number, embeds shifting block according to the row preface in the respective grooves of each cam, and described movable slats is provided with the projection corresponding with this shifting block; When motor rotated, the shifting block on each cam was being stirred projection according to sequential, and then makes the movable slats translation, subsequently the releasing activity lath; Also be provided with movable slats Flexible Reset body on each movable slats, movable slats can be resetted.
Described the hot end of the electromagnetic assembly of each Braille convex-concave point control structure is connected in respectively on the corresponding driving line in each side's module, and its electronegative potential is connected on the same ground wire.
Also be provided with panel above each side's module, display board is provided with through hole, and described character push rod is through in the corresponding through hole.
The utility model drives character push rod method based on electromagnet and spring wire combination, adopts and presses the method for inhaling, and has avoided electromagnet to need the problem of big electric current when adhesive; Adopt friction maintenance method, can between read period, need not to provide electric current to solenoid; Adopt type of drive line by line, can when page turning, power line by line, reduced immediate current; Each side is carried out modularization, can reduce the complicacy of production run, can reduce the power consumption in the use generally, reduce the complicacy of production technology, reduce production costs, satisfy the demand that blind person's full page is read.
Description of drawings
Fig. 1-1～1-4 is a Braille convex-concave point control structural representation, wherein,
Fig. 1-the 1st, original state (salient point state) synoptic diagram,
Fig. 1-2 be the intermediateness synoptic diagram,
Fig. 1-the 3rd, the pit-phase synoptic diagram,
Fig. 1-the 4th, the original state that is returned to (salient point state) synoptic diagram.
Fig. 2-1～2-4 side of being modular structure synoptic diagram, wherein,
Fig. 2-the 1st, square module schematic top plan view,
Fig. 2-the 2nd, a square module left side look cross-sectional schematic,
Fig. 2-the 3rd, square module master look cross-sectional schematic,
Fig. 2-the 4th, square module elevational schematic view.
Fig. 3 is the driving circuit PCB routing figure of electromagnetic assembly.
Fig. 4-1,4-2 are the movable slats structural representations, wherein,
Fig. 4-the 1st, the master of movable slats look synoptic diagram,
Fig. 4-the 2nd, the elevational schematic view of movable slats.
Fig. 5-1～Fig. 5-the 3rd, portable plate control device structural representation, wherein,
Fig. 5-the 1st, cam stir movable slats translation view,
Fig. 5-the 2nd, movable slats Flexible Reset body make movable slats reset mode synoptic diagram,
Fig. 5-the 3rd, motor-driven cam set rotary state synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment the technical program is described further.
Full page braille point shows device:
1, Braille convex-concave point control structure example explanation:
Fig. 1-the 1st, this routine full page braille point shows a dot element (being Braille convex-concave point control structure) the original state diagrammatic cross-section of device.1.1 is the character push rod among the figure; 1.2 be the panel of the apparent device of point; 1.3 be portable plate; 1.4 be the Elastic Contact face (being the Elastic Contact face on the inwall of waist hole) of portable plate and push rod under the normality; 1.5 be the groove of portable plate bottom; 1.6 be become cross with push rod shaft-like outstanding; 1.7 be armature, it and character push rod lower end are bonding; 1.8 be to reset to use spring wire; 1.9 be magnetic cavity; 1.10 be electromagnetic core; 1.11 be solenoid; 1.12 be coil covering box.
The character push rod that this is routine, top is the cylinder of diameter 1.0-1.2mm, and the shaft-like outstanding of a symmetry, the armature of bottom are arranged is diameter 1.8mm, the cylinder made by soft iron material.
As Fig. 1-1, when the page will be changed, portable plate 1.3 was moved to the left, under the compressing on groove groove edge, shaft-like outstanding drive push rod and armature move downward stroke 0.5mm along magnetic cavity, just make armature and electromagnetic core closure, arrive state (intermediateness) shown in Fig. 1-2.
If this point will show concave point, the solenoid energising, during the portable plate travelling backwards, armature is subjected to gravitation (gravitation is greater than the elastic force of spring wire) and maintains static, reset fully back outage of portable plate, the Elastic Contact face of portable plate closely contacts with character push rod left surface, and friction makes the character push rod can not resilience, so keep concave point up to page replacing next time, state (pit-phase) as Figure 1-3.
If this point will show salient point, solenoid no power in said process then, therefore in the process of portable plate travelling backwards, the character push rod is subjected to the effect of spring wire screen resilience and return, outstanding panel, and be subjected to the Elastic Contact face of portable plate and the friction effect of character push rod left surface to make push rod keep outstanding simultaneously.
2, square module instance explanation:
Fig. 2-1～Fig. 2-4, wherein, the 1.10th, electromagnetic core; 1.11 be solenoid; 2.3 be pin; 2.4 be the outer box of module (this example adopts the bakelite box).
According to the Braille rule, per 6 dot elements constitute a square module according to 3 row * 2 row rows.6 electromagnet in square module are encapsulated in the bakelite box, form a square electromagnetic component pack module, as Fig. 2-1～2-4.Each coil is connected on the respective pins, and one of them pin is the common ground of 6 coils.During installation, each module pin is inserted in the welding hole of driving circuit printed board.
As Fig. 3, printed board is a double-clad board, the 3.1st, and the row common ground all has an end to link to each other therewith with each coil in the delegation, and this ground wire connects total ground wire by the row gating switch; 3.2 be the drive wire of coil, the coil other end of the dot element that each row is corresponding all connects on the respective drive line, drive wire links to each other with the character decoder driver circuit; 3.3 be welding hole, during installation, the electromagnetic assembly pin of the electromagnetic assembly of square module inserts wherein and welding.The corresponding point of each row is with same bus, with delegation with a common ground.
3, this routine portable plate control device explanation:
As Fig. 4-1,4-2, the 4.1st, be used for the waist hole that the character push rod passes; 4.2 be when concrete Project Realization, the through hole that mounting bracket is used; 1.5 be the groove of movable slats bottom.
As Fig. 5-1～Fig. 5-3,5.1st, movable slats; 5.2 be the back-moving spring (being the Flexible Reset body) of movable slats; 5.3 be cam, discharge the corresponding cam of each row side's module, the shifting block position difference on each cam after the drive movable slats is moved to the left about 0.6mm during rotation; 5.4 be rotating shaft, each cam drives movable slats successively and moves back and forth once during rotation; 5.5 be camshaft stand; 5.6 be gear set; 5.7 be motor.
Per 40 square modules constitute delegation, and each is exercised with a movable slats, have on the movable slats to allow that push rod passes, the two ends be the waist hole of half garden shape, can move left and right, and as Fig. 4-1,4-2.In aforementioned process, the replacing of delegation's word is finished in a to-and-fro movement of movable slats.
Full page point shows device and has 25 row (being not limited to 25 row), rotates the replacing of finishing the full page literal after a week by a motor-driven cam set.As Fig. 5-1.Among Fig. 5-3, cam set has the cam with the line number same number, and each cam has 25 grooves, embeds a shifting block according to the row preface in the different slots of each cam.When motor rotated, the shifting block on each cam was stirred projection on the movable slats successively in the different time, and movable slats is moved to the left, the about 0.6mm of stroke, and releasing activity lath subsequently, movable slats resets under the effect of back-moving spring.
Also be provided with photoelectric detection switch on this routine movable slats, making movable slats discharge preceding switch triggers, the drive wire that links to each other with each solenoid is admitted to the point voltage corresponding with this style of writing notebook data, the common ground switch conduction of this row all coils simultaneously, the galvanization that each coil has, what have does not have an electric current, so the protrusion that has of character push rod, and what have is recessed.After movable slats resetted fully, the common ground switch disconnected, and all coils does not have electric current.
Adopt to drive (movable slats of every row and a common ground switch) line by line and can make the corresponding point of each row with same driving circuit and bus, no matter how many row full page has, only need 240 coil drive ports and 240 drive wires.
It is as follows that this routine full page braille point shows the implement body course of work:
1. manual triggers page-turning button (on turn over or under turn over), motor begins to rotate.
2. the e-text from computing machine or USB flash disk is converted into Braille data (this change-over circuit and program can realize easily in the prior art, further do not limited at this), and the data of first row are added on the respective drive line by driving circuit.
3. first cam driven first row portable plate 0.6mm that moves to left, the character push rod is forced into iron core and contact, and movable slats triggers row wiretap always by photoelectric detection switch simultaneously, and solenoid is switched on.
4. movable slats discharges, homing under the effect of back-moving spring.In this process, the part push rod is owing to led to electric current on the corresponding solenoid, and the character push rod keeps down position, and other character push rod is not owing to there is drive current, and the character push rod rises under the effect of spring wire.After movable slats resetted, the left margin Elastic Contact face in the waist hole on the plate closely contacted with the character push rod, makes character push rod stationkeeping.Simultaneously, after movable slats resetted, the total ground wire of row opened circuit, and coil current disappears.
5. along with motor rotates, the portable plate of second cam driven second row moves to left, and repeats above-mentioned 2,3,4 steps.
6. after a week was rotated in rotating shaft, each row had all carried out the upper-lower position adjustment of character push rod, and page turning finishes.
Claims (7)
1. Braille convex-concave point control structure is characterized in that comprising character push rod, shaft-like outstanding, portable plate and control device thereof, character push rod motion control device;
Described shaft-like giving prominence to is connected character push rod lower end, and the character push rod moves up and down under character push rod motion control device and shaft-like outstanding drive;
Described portable plate is provided with the waist hole, and the character push rod vertically passes the waist hole, is provided with and described shaft-like outstanding shape corresponding groove at the bottom of portable plate;
The length direction in waist hole is consistent with the direction of motion of portable plate;
Described character push rod motion control device comprises elastic body and electromagnetic assembly, and described character push rod lower end also is provided with armature, and electromagnetic assembly passes through to the application of force of armature and then to the character push rod application of force; Described elastic body and electromagnetic assembly are opposite to character push rod application of force direction.
2. Braille convex-concave point control structure according to claim 1 is characterized in that described elastic body is a spring wire, and this spring wire is supported on shaft-like outstanding below; Described electromagnetic assembly comprises iron core and the solenoid that magnetic cavity and magnetic cavity below are provided with; Described character push rod is located at the magnetic cavity top, and armature is in magnetic cavity.
3. Braille convex-concave point control structure according to claim 1 and 2 is characterized in that described waist hole inwall is provided with the Elastic Contact face.
4. one kind is used the full page of the driving line by line braille point of right 1,2 or 3 arbitrary described Braille convex-concave point control structures to show device, it is characterized in that comprising a plurality of side's modules, each side's module is arranged formation by 6 Braille convex-concave point control structures that are located in the module housing according to 3 row * 2 row;
For square module with delegation,
The portable plate of each Braille convex-concave point control structure links to each other and constitutes a movable slats, and driven by same portable plate control device; The quantity in the waist hole on the movable slats and position are with corresponding with the character push rod in delegation side's module, and described character push rod is by flexible in the corresponding waist hole;
For the square module of same row,
Be in the 1st, 2 and 3 Braille convex-concave point control structures of same row in each side's module, its electromagnetic assembly is connected on respectively on the 1st, the 2 and 3 identical drive wires.
5. the full page braille point that drives line by line according to claim 4 shows device, it is characterized in that described portable plate control device is to rotate the replacing of finishing the full page literal after a week by a motor-driven cam set; Cam set is provided with the cam with square module line number equal number, and each cam has and the identical groove of square module line number, embeds shifting block according to the row preface in the respective grooves of each cam, and described movable slats is provided with the projection corresponding with this shifting block; Also be provided with movable slats Flexible Reset body on each movable slats.
6. the full page braille point that drives line by line according to claim 5 shows device, it is characterized in that described in each side's module, the hot end of the electromagnetic assembly of each Braille convex-concave point control structure is connected in respectively on the corresponding driving line, and its electronegative potential is connected on the same ground wire.
7. show device according to claim 4,5 or 6 arbitrary described full page braille points that drive line by line, it is characterized in that also being provided with panel above each side's module, display board is provided with through hole, and described character push rod is through in the corresponding through hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201020192511 CN201812402U (en) | 2010-05-17 | 2010-05-17 | Braille concave-convex point control structure and line-by-line drive full-page Braille point display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201020192511 CN201812402U (en) | 2010-05-17 | 2010-05-17 | Braille concave-convex point control structure and line-by-line drive full-page Braille point display |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184662A (en) * | 2011-05-23 | 2011-09-14 | 桂林理工大学 | Electromagnetic push-pull Braille touch screen |
| CN103105902A (en) * | 2013-02-28 | 2013-05-15 | 联宝(合肥)电子科技有限公司 | Computer screen for the blind and control method thereof |
| CN104915085A (en) * | 2015-06-29 | 2015-09-16 | 清华大学 | Dot-matrix magnetic control refreshing tactile display |
| CN104934793A (en) * | 2015-06-29 | 2015-09-23 | 清华大学 | Two-dimensional driving platform of touch dot array |
-
2010
- 2010-05-17 CN CN 201020192511 patent/CN201812402U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184662A (en) * | 2011-05-23 | 2011-09-14 | 桂林理工大学 | Electromagnetic push-pull Braille touch screen |
| CN103105902A (en) * | 2013-02-28 | 2013-05-15 | 联宝(合肥)电子科技有限公司 | Computer screen for the blind and control method thereof |
| CN103105902B (en) * | 2013-02-28 | 2016-04-13 | 联宝(合肥)电子科技有限公司 | A kind of blind person's computer screen and control method thereof |
| CN104915085A (en) * | 2015-06-29 | 2015-09-16 | 清华大学 | Dot-matrix magnetic control refreshing tactile display |
| CN104934793A (en) * | 2015-06-29 | 2015-09-23 | 清华大学 | Two-dimensional driving platform of touch dot array |
| CN104915085B (en) * | 2015-06-29 | 2017-10-27 | 清华大学 | Dot matrix magnetic control refreshes tactual displays |
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