CN100580743C - Braille display element - Google Patents
Braille display element Download PDFInfo
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- CN100580743C CN100580743C CN200510105242A CN200510105242A CN100580743C CN 100580743 C CN100580743 C CN 100580743C CN 200510105242 A CN200510105242 A CN 200510105242A CN 200510105242 A CN200510105242 A CN 200510105242A CN 100580743 C CN100580743 C CN 100580743C
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- piezoelectric patches
- push rod
- main body
- circuit board
- contact pin
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Abstract
The invention belongs to technical area of reading tool for blind men. There are multiple pieces of pinlift in display element. Circuit board is fixed on main body. Piezo-electric pieces are arranged inside main body in mode of parallel stepladder. The middle part of piezo-electric pieces is grasped and fixed by the upper and lower conducting strips and electric contact pin. The said conducting strip is a sheet metal. Curved reed is at one end, and round tube is setup at another end. Being inserted in round tube, the metal conducting pin is soldered on the circuit board. Curved reed is positioned at other side corresponding to piezo-electric piece and electric contact pin. Features are: reliable contact between electrode surface of piezo-electric piece and the contact pin, conductive body. The conductive body is sheathed on electric contact pin. Thus, the conductive body is replaceable, manufacturing conductive body and electric contact pin simply and at low cost.
Description
Technical field
The present invention relates to a kind of Braille display element, belong to blind person's reading tool technical field.
Background technology
The blind person can't watch things with eyes as the normal person, mainly obtains extraneous information by the sense of hearing of ear and the sense of touch of finger.If common personal computer offers user's information spinner screen display figure or literal, this can't utilize concerning the blind person.So aiming at the blind person designs blind in a word computer, the critical component of this computing machine is the touch sensitive screen that shows Braille, the blind person touches and reads Word message with this editing files easily, and the resource of enjoying modern information technologies the samely and provided with the person of good sense is provided.
In the prior art, Jap.P. JP2005003797 discloses a kind of Braille display element, and a plurality of these element rows couple together with connector together, forms the braille display.Its structure of display element wherein as depicted in figs. 1 and 2.Wherein, the 1st, main body, the 2nd, circuit board, the 202nd, board pads, the 3rd, the IC circuit chip, the 4th, connect plug-in unit, the 5th, top cover, the 501st, the hole on the top cover, 5a is the top cover extended end, the 6th, push rod, 6a are the push rod terminations, the 7th, piezoelectric patches, the 8th, conductive contact pin, the 9th, button.The shortcoming of this word element is the method for clamping imperfection of piezoelectric patches 7.Conductive contact pin 8 can not well contact with piezoelectric patches 7, causes piezoelectric patches work undesired, even causes the circuit virtual connection, causes the circuit sparking, forms potential safety hazard, influences component life.Conductive contact pin is fixed on the circuit board simultaneously, is difficult for changing in case damage.
Summary of the invention
The objective of the invention is to propose a kind of Braille display element, change the method for clamping of piezoelectric patches in the existing Braille display element,, make the work of whole display element more reliable to guarantee electrically contacting between each part.
The Braille display element that the present invention proposes has 5 kinds of different structures, and first kind of structure comprises main body, piezoelectric patches, circuit board and push rod.Push rod has many, vertically is inserted in the hole of main body, and the upper end of push rod is housed under the top cover after stretching out main body.Circuit board is fixed on the main body.In the stepped sub-main body that is arranged in parallel of piezoelectric patches, one end of piezoelectric patches links with the bottom of push rod respectively, the number of piezoelectric patches equates with push rod, the other end of piezoelectric patches and circuit board relative fixed, the stage casing of piezoelectric patches is gripped by upper and lower conducting strip and conductive contact pin, conducting strip is a sheet metal, the one end is an arc spring leaf, the other end is provided with pipe, be inserted with the metallic conduction pin in the pipe, the metallic conduction pin is welded on the circuit board, and arc spring leaf is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin.
Structural relation between main body, piezoelectric patches, circuit board and the push rod in other four kinds of structures is identical with first kind, difference is the respectively relation between other parts of piezoelectric patches stage casing part, second kind of structure wherein, the stage casing part of piezoelectric patches is gripped by upper and lower conducting strip and conductive contact pin, conducting strip is a sheet metal, its middle part is an arc spring leaf, two ends are provided with pipe, be inserted with the metallic conduction pin in the pipe, the metallic conduction pin is welded on the circuit board, and arc spring leaf is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin.
In the third structure, at first on a metal connecting piece, stamp out conducting strip, the stage casing part of piezoelectric patches is gripped by upper and lower conducting strip and conductive contact pin, conducting strip is a sheet metal, the one end is an arc spring leaf, the other end links to each other with the main body of metal connecting piece, and arc spring leaf is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin, and metal connecting piece is welded on the circuit board.
In the 4th kind of structure, also comprise a conductive rubber, the stage casing part of piezoelectric patches is gripped by upper and lower conductive rubber and conductive contact pin, be inserted with the metallic conduction pin in the conductive rubber, the metallic conduction pin is welded on the circuit board, and conductive rubber is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin.
In the 5th kind of structure, the stage casing part of piezoelectric patches is gripped by upper and lower conducting strip and conductive contact pin, conducting strip is a sheet metal, its middle part is an arc spring leaf, and arc spring leaf is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin, and an end of conducting strip is provided with pipe, be inserted with the metallic conduction pin in the pipe, the metallic conduction pin is welded on the circuit board, and its other end is provided with insulation spacer, and insulation spacer contacts with the conductive contact pin of last layer piezoelectric patches.
The Braille display element of the present invention's design, contrast with prior art, its advantage is: the mode that the piezoelectric patches method of clamping adopts conductive contact pin and electric conductor to combine, make the piezoelectric patches electrode surface can contact conductive contact pin and electric conductor very reliably, piezoelectric patches can be stable obtain electric current, the phenomenon of virtual connection can not appear.Conductive pin is fixed on the circuit board, and electric conductor is enclosed within on the conductive pin, so electric conductor can change, and is convenient to modulation, assembling and the maintenance of braille display unit.The processing of parts such as electric conductor, conductive pin is simple, and cost is low.
Description of drawings
Fig. 1 is the structural representation of existing Braille display element.
Fig. 2 is the structural representation of first kind of Braille display element proposing of the present invention.
Fig. 3 is the enlarged drawing of structure between each parts of piezoelectric patches middle part in the display element shown in Figure 2.
Fig. 4 is the structural representation of second kind of Braille display element proposing of the present invention.
Fig. 5 is the enlarged drawing of structure between each parts of piezoelectric patches middle part in the display element shown in Figure 4.
Fig. 6 is the structural representation of the third Braille display element of proposing of the present invention.
Fig. 7 is the enlarged drawing of structure between each parts of piezoelectric patches middle part in the display element shown in Figure 6.
Fig. 8 is the structural representation of the 4th kind of Braille display element proposing of the present invention.
Fig. 9 is the enlarged drawing of structure between each parts of piezoelectric patches middle part in the display element shown in Figure 8.
Figure 10 is the structural representation of the 5th kind of Braille display element proposing of the present invention.
Figure 11 is the enlarged drawing of structure between each parts of piezoelectric patches middle part in the display element shown in Figure 10.
Among Fig. 1～Figure 11, the 1st, main body, the 2nd, circuit board, the 202nd, board pads, the 3rd, the IC circuit chip, the 4th, connect plug-in unit, the 5th, top cover, the 501st, the hole on the top cover, 5a is the top cover extended end, the 6th, and push rod, 6a are the push rod terminations, the 7th, piezoelectric patches, 7a is an electrode, the 8th, and conductive contact pin, the 9th, button, the 10th, electric conductor, a is the arc spring leaf of electric conductor, and b is the pipe on the electric conductor, the 11st, and the metallic conduction pin, the 12nd, metal connecting piece, the 13rd, rubber electric conductor, the 14th, insulation spacer.
Embodiment
The Braille display element that the present invention proposes has 5 kinds of different structures, and first kind of structure comprises main body 1, piezoelectric patches 7, circuit board 2 and push rod 6 etc. as shown in Figure 2.Push rod 6 has many, vertically is inserted in the hole of main body 1, and main body 1 back cover is stretched out top cover 5 times in the upper end of push rod 6.Circuit board 2 is fixed on the main body 1.Piezoelectric patches 7 stepped being parallel in the main body 1, an end of piezoelectric patches 7 are linked with the bottom of push rod 6 respectively, and the number of piezoelectric patches 7 equates with the number of push rod 6, the other end of piezoelectric patches 7 and circuit board 2 relative fixed.The structure enlarged drawing of each parts of stage casing of piezoelectric patches 7 as shown in Figure 3, grip by upper and lower conducting strip 10 and conductive contact pin 8, conducting strip 10 is a sheet metal, one end i.e. a position among the figure is an arc spring leaf, the other end is provided with pipe b, be inserted with metallic conduction pin 11 in the pipe, metallic conduction pin 11 is welded on the circuit board 2, and arc spring leaf a is positioned on the piezoelectric patches 7 and conductive contact pin 8 corresponding opposite sides.Its principle of work is: pad 202, electric conductor 10 and conductive contact pin 8 are used for to piezoelectric patches 7 conduction currents.Apply voltage to electric conductor 10 and pad 202, and conductive contact pin 8 is not applied voltage, piezoelectric patches 7 will be bent upwards like this, moves upward thereby promote push rod 6, and protrudes top cover 5, and the blind person is the termination 6a that available hand touches push rod 6.If apply voltage to conductive contact pin 8 and pad 202, and electric conductor 10 is not applied voltage, then piezoelectric patches 7 just is bent downwardly, make push rod 6 sink to top cover 5 below, the blind person just touches termination 6a less than push rod 6 with hand.8 push rods in each some word element are last or following, just formed different brailles.
Main body 1 in other four kinds of structures, piezoelectric patches 7, structural relation between circuit board 2 and the push rod 6 with above-mentioned first kind identical, difference is the relation between each parts of stage casing of piezoelectric patches 7, second kind of structure as shown in Figure 4 and Figure 5, wherein, the stage casing of piezoelectric patches 7 is by last, under conducting strip 10 and conductive contact pin 8 grip, conducting strip 10 is a sheet metal, its middle part is arc spring leaf a, two ends are provided with pipe b, be inserted with metallic conduction pin 11 in the pipe, metallic conduction pin 11 is welded on the circuit board 2, and arc spring leaf a is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin.Its principle of work is: pad 202, electric conductor 10 and conductive contact pin 8 are used for to piezoelectric patches 7 conduction currents.Apply voltage to electric conductor 10 and pad 202, and conductive contact pin 8 is not applied voltage, piezoelectric patches 7 will be bent upwards, and promotes push rod 6 and move upward, and protrudes top cover 5, and the blind person promptly can touch the termination 6a of push rod 6 with hand; If apply voltage to conductive contact pin 8 and pad 202, and electric conductor 10 is not applied voltage, then piezoelectric patches 7 will be bent downwardly, make push rod 6 sink to top cover 5 below, the blind person just touches termination 6a less than push rod 6 with hand.8 push rods are last or following in each some word cell, just formed different brailles.
The third structure as shown in Figure 6 and Figure 7, at first on a metal connecting piece 12, stamp out conducting strip 10, the stage casing part of piezoelectric patches 7 is gripped by upper and lower conducting strip 10 and conductive contact pin 8, conducting strip 10 is a sheet metal, the one end is arc spring leaf a, the other end links to each other with the main body of metal connecting piece 12, and arc spring leaf a is positioned on the piezoelectric patches 7 and conductive contact pin 8 corresponding opposite sides, and metal connecting piece 12 is welded on the circuit board 2.Its principle of work is: pad 202, electric conductor 10 and conductive contact pin 8 are used for to piezoelectric patches 7 conduction currents.Apply voltage to electric conductor 10 and pad 202, conductive contact pin 8 is not applied making alive, piezoelectric patches 7 will be bent upwards, and promotes push rod 6 and moves upward, and protrude top cover 5, and the blind person can touch the termination 6a of push rod 6 with hand; If apply voltage on electric conductor 8 and pad 202, and electric conductor 10 is not applied voltage, then piezoelectric patches 7 will be bent downwardly, and push rod 6 is sunk to below the top cover 5, and the blind person just touches the termination 6a less than push rod 6 with hand like this.8 push rods are last or following in each some word cell, just formed different brailles.
The 4th kind of structure such as Fig. 8 and shown in Figure 9, wherein, also comprise a conductive rubber 13, the stage casing part of piezoelectric patches 7 is gripped by upper and lower conductive rubber 13 and conductive contact pin 8, be inserted with metallic conduction pin 11 in the conductive rubber 13, metallic conduction pin 11 is welded on the circuit board 2, and conductive rubber 13 is positioned on the piezoelectric patches 7 and conductive contact pin 8 corresponding opposite sides.Its principle of work is: pad 202, electric conductor 10 and conductive contact pin 8 are used for to piezoelectric patches 7 conduction currents.Apply voltage to electric conductor 10 and pad 202, and conductive contact pin 8 is not applied voltage, then piezoelectric patches 7 will be bent upwards, and promotes push rod 6 and moves upward, and protrude top cover 5, and the blind person just can touch the termination 6a of push rod 6 with hand; If apply voltage to conductive contact pin 8 and pad 202, and electric conductor 10 is not applied voltage, then piezoelectric patches will be bent downwardly, and push rod 6 is sunk to below the top cover 5, and the blind person touches termination 6a less than push rod 6 with hand.8 push rods are last or following in each some word cell, just formed different brailles.
The 5th kind of structure as shown in Figure 10 and Figure 11, wherein, the stage casing part of piezoelectric patches 7 is gripped by upper and lower conducting strip 10 and conductive contact pin 8, conducting strip 10 is a sheet metal, its middle part is arc spring leaf a, arc spring leaf a is positioned on the piezoelectric patches 7 and conductive contact pin 8 corresponding opposite sides, one end of conducting strip is provided with pipe b, be inserted with metallic conduction pin 11 in the pipe, metallic conduction pin 11 is welded on the circuit board 2, its other end is provided with insulation spacer 14, and insulation spacer 14 contacts with the conductive contact pin 8 of last layer piezoelectric patches 7.Its principle of work is that pad 202, electric conductor 10 and conductive contact pin 8 are used for to piezoelectric patches 7 conduction currents.Apply voltage to electric conductor 10 and pad 202, and conductive contact pin 8 is not applied voltage, piezoelectric patches 7 will be bent upwards, and promotes push rod 6 and moves upward, and protrude top cover 5, and the blind person just can touch the termination 6a of push rod 6 with hand; If conductive contact pin 8 and pad 202 are applied voltage, and electric conductor 10 is not applied voltage, then piezoelectric patches can 7 just be bent downwardly, and push rod 6 is sunk to below the top cover 5, and the blind person touches termination 6a less than push rod 6 with hand.8 push rods are last or following in each some word cell, just formed different brailles.
Claims (5)
1, a kind of Braille display element comprises main body, piezoelectric patches, circuit board and push rod; Described push rod has many, vertically is inserted in the hole of main body, and the main body back cover is stretched out under top cover in the upper end of push rod; Described circuit board is fixed on the main body; Described piezoelectric patches is stepped to be parallel in the main body, one end of piezoelectric patches links with the bottom of push rod respectively, the number of piezoelectric patches equates with push rod, the other end of piezoelectric patches and circuit board relative fixed, the stage casing part that it is characterized in that piezoelectric patches is by last, under conducting strip and conductive contact pin grip, conducting strip is a sheet metal, the one end is an arc spring leaf, the other end is provided with pipe, be inserted with the metallic conduction pin in the pipe, the metallic conduction pin is welded on the circuit board, and arc spring leaf is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin, arc spring leaf becomes half arc-shaped bend, and crooked peak contacts with piezoelectric patches.
2, a kind of Braille display element comprises main body, piezoelectric patches, circuit board and push rod; Described push rod has many, vertically is inserted in the hole of main body, and the main body back cover is stretched out under top cover in the upper end of push rod; Described circuit board is fixed on the main body; Described piezoelectric patches is stepped to be parallel in the main body, one end of piezoelectric patches links with the bottom of push rod respectively, the number of piezoelectric patches equates with push rod, the other end of piezoelectric patches and circuit board relative fixed, the stage casing part that it is characterized in that piezoelectric patches is by last, under conducting strip and conductive contact pin grip, conducting strip is a sheet metal, its middle part is an arc spring leaf, two ends are provided with pipe, be inserted with the metallic conduction pin in the pipe, the metallic conduction pin is welded on the circuit board, and arc spring leaf is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin, arc spring leaf becomes half arc-shaped bend, and crooked peak contacts with piezoelectric patches.
3, a kind of Braille display element comprises main body, piezoelectric patches, circuit board and push rod; Described push rod has many, vertically is inserted in the hole of main body, and the main body back cover is stretched out under top cover in the upper end of push rod; Described circuit board is fixed on the main body; Described piezoelectric patches is stepped to be parallel in the main body, one end of piezoelectric patches links with the bottom of push rod respectively, the number of piezoelectric patches equates with push rod, the other end of piezoelectric patches and circuit board relative fixed, it is characterized in that also comprising metal connecting piece, stamp out conducting strip on the metal connecting piece, the stage casing part of piezoelectric patches is by last, under conducting strip and conductive contact pin grip, conducting strip is a sheet metal, the one end is an arc spring leaf, the other end links to each other with the main body of metal connecting piece, arc spring leaf is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin, arc spring leaf becomes half arc-shaped bend, and crooked peak contacts with piezoelectric patches, and metal connecting piece is welded on the circuit board.
4, a kind of Braille display element comprises main body, piezoelectric patches, circuit board and push rod; Described push rod has many, vertically is inserted in the hole of main body, and the main body back cover is stretched out under top cover in the upper end of push rod; Described circuit board is fixed on the main body; Described piezoelectric patches is stepped to be parallel in the main body, one end of piezoelectric patches links with the bottom of push rod respectively, the number of piezoelectric patches equates with push rod, the other end of piezoelectric patches and circuit board relative fixed, it is characterized in that also comprising conductive rubber, the stage casing part of piezoelectric patches is gripped by upper and lower conductive rubber and conductive contact pin, be inserted with the metallic conduction pin in the conductive rubber, the metallic conduction pin is welded on the circuit board, and conductive rubber is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin.
5, a kind of Braille display element comprises main body, piezoelectric patches, circuit board and push rod; Described push rod has many, vertically is inserted in the hole of main body, and the main body back cover is stretched out under top cover in the upper end of push rod; Described circuit board is fixed on the main body; Described piezoelectric patches is stepped to be parallel in the main body, one end of piezoelectric patches links with the bottom of push rod respectively, the number of piezoelectric patches equates with push rod, the other end of piezoelectric patches and circuit board relative fixed, the stage casing part that it is characterized in that piezoelectric patches is by last, under conducting strip and conductive contact pin grip, conducting strip is a sheet metal, its middle part is an arc spring leaf, arc spring leaf is positioned on the piezoelectric patches and the corresponding opposite side of conductive contact pin, arc spring leaf becomes half arc-shaped bend, crooked peak contacts with piezoelectric patches, one end of conducting strip is provided with pipe, is inserted with the metallic conduction pin in the pipe, and the metallic conduction pin is welded on the circuit board, its other end is provided with insulation spacer, and insulation spacer contacts with the conductive contact pin of last layer piezoelectric patches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510105242A CN100580743C (en) | 2005-09-28 | 2005-09-28 | Braille display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510105242A CN100580743C (en) | 2005-09-28 | 2005-09-28 | Braille display element |
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| Publication Number | Publication Date |
|---|---|
| CN1744153A CN1744153A (en) | 2006-03-08 |
| CN100580743C true CN100580743C (en) | 2010-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510105242A Active CN100580743C (en) | 2005-09-28 | 2005-09-28 | Braille display element |
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| CN (1) | CN100580743C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI789383B (en) * | 2017-03-29 | 2023-01-11 | 德商強生麥特壓電產品有限公司 | Braille terminal and module for a braille terminal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102073378B (en) * | 2011-01-04 | 2012-07-04 | 宁波大学 | Tactile reproduction system for pattern mapping |
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2005
- 2005-09-28 CN CN200510105242A patent/CN100580743C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI789383B (en) * | 2017-03-29 | 2023-01-11 | 德商強生麥特壓電產品有限公司 | Braille terminal and module for a braille terminal |
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| Publication number | Publication date |
|---|---|
| CN1744153A (en) | 2006-03-08 |
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