JPS5913270A - Braille display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a Braille display device.9 In particular, by driving the Braille display pin by a bimorph, it is possible to display Braille in a small, lightweight and low-power manner. It is suitable for Braille displays, Braille display/input devices, etc.

For example, a comprehensive online false character processing system as shown in FIG. 1 has been proposed. According to this comprehensive online braille processing system, a large computer system is placed at the center, and large computer system 1 is used for code conversion and plain text (print text).
It has functions such as mutual conversion between and Braille text 9 and editing, and is connected to a database/dictionary file 3. Moreover, the intelligent Braille station 2, which is dumped as needed, is provided with functions such as code conversion and editing, and is connected to a Braille file 4. This large-scale computer system 1 includes a high-speed braille printer 5 as a terminal device. A high-speed Kanji printer 6, a 4-character display terminal 7, a Kanji display terminal 8, etc. are connected, and the intelligent Braille station 2 also has a Kanji printer 9 as a terminal device. High-speed braille printer 100
Braille display terminal 11. A portable Braille typewriter 12 or the like is connected.

Further, an f-portable Braille typewriter 14 is connected to the large-scale computer system 1 via a subscriber telephone line network 13.

The database/dictionary file 3 includes, for example, databases of publications such as car books, newspapers, and H magazines, an English-Japanese dictionary, a Japanese dictionary, a kana-kanji conversion dictionary, and mutual conversion between ordinary sentences and shiji sentences. Includes dictionaries. Furthermore, the file 4 stores various data that the user should directly use.

Therefore, by inputting 9 braille data into the portable type braille typewriter 12, it is possible to perform various data processing in the same way as a normal data processing device, and also to send publications to the center. When a transmission request is made, the transmitted publication can be received as Braille data, and the output can be displayed on the Braille display terminal 11 or the like.

In addition to displaying the results accessed through Braille input on the Braille display terminal 7 or 11,
If necessary, the text can be converted into plain text and outputted to the high-speed Kanji printer 6 or the Kanji printer 9.

In order to configure such a comprehensive online braille processing system, it is necessary to display output data or human input data in braille on a kanji display terminal 7.11 or a portable braille typewriter 12, 14, etc. .

As shown in Figure 2 (0), one character in Braille is made up of six dots, and the size of the dots is A! 5 = 111° dot 3. Distance between top and bottom 7g = 2.2111j Distance between left and right dots A! 5=211. Furthermore, as shown in FIG. 2 (b) FC, it is conventionally determined that the distance between the 9 braille dots is 1a' = 3, and braille is displayed by selectively protruding these 6 dots. When this is used as a Braille output means, it is common to arrange 32 characters (40 characters in Europe and America) horizontally in the case of 9 Japanese Braille characters.

For example, as shown in FIG. 3, the braille display terminal is composed of a keyboard part (2) and a display part IK, and the display part has a display section A for sighted people and a braille display section B. And for this braille display category B.

A braille display is provided for at least 32 characters.

When inputting Braille, input is performed by selectively operating the six Braille keys (displaying numbers 1 to 6) provided on the keyboard section 1 and the space key, but the shield character input data is 9. For example, a 5x7 dot matrix is displayed as a normal character in the display section for sighted people by the control section (not shown), but also □ is displayed as a kanji character in the kanji display section B. Then it becomes K. Therefore, if the operator has eyesight, he can check the input data by displaying it in display category A, and if the operator has a non-day cap in his eyesight, he can check the input data by displaying it in kanji display category B. The input data can be confirmed by touching the kanji display pin with your finger.

Note that in the A-shaped display section B, a cursor instruction pin CIP and a Braille cell selection switch BC8 are provided above each Braille character. Also, this display category A for sighted people
Braille display category B is the keyboard part! It displays Braille data as a response to items input from a computer, or when Braille data received from a large-scale computer is transmitted. If this braille display section is also provided in a portable braille typewriter, seven types can be created.

Conventionally, in order to control the protrusion of this dot, as shown in FIG.
1 and fixed to its tip 22
-0 At this time, the tip of the wire 23 is formed with an inclined part 23-1, and the lower part thereof is larger than the diameter of the hole 24-1 of the board 24. Even if the plunger 21 is movable by about 4 to 5 points, the tip of the wire 23 will be 0.00 degrees lower than the board 24.
It is constructed so that only about 4 to 0.5 dragons protrude.

However, in order to express one Braille character, it takes approximately 1 yen and six electromagnetic drive devices with a length of approximately 5 cIlb, and in order to express at least 32 Braille characters, KFi
As many as 192 electromagnetic drives are required. Therefore, this type of terminal proposed in the past had the disadvantage of being very large and requiring a large amount of power consumption.

Therefore, an object of the present invention is to provide a very small and lightweight Braille display device in order to solve these problems. Another object of the present invention is to provide an iA braille display device with very low power consumption.

In order to achieve such an object, the braille display device of the present invention includes a braille display body that can be inserted into a hole formed in a display surface and whose tip can protrude from the hole, and the braille display body. It is characterized by having a bimorph that drives the.

An embodiment of the present invention will be described below with reference to FIGS. 5 to 8.

Fig. 5 is an explanatory diagram of the bimorph, Fig. 6 is an explanatory diagram of the bending state when a voltage is applied to the bimorph, Fig. 7 is an explanatory diagram of the arrangement relationship between Braille and the bimorph, and Fig. 8 is an illustration of the substrate to which the bimorph is fixed. FIG. 4 is an explanatory diagram of an assembled state and a lead wire arrangement state.

As shown in FIG.
(Zircon lead titanate porcelain 4b (Zr Ti)Os
) piezoelectric ceramic elements 26 and 27 such as
．． 27-1 is composed of K.

Since one end of this bimorph 25 is fixed to the substrate 29, about 200 mm
When a voltage of about It is possible to drive and control the braille display rod.

Therefore, when a large number of Braille display bodies are arranged adjacent to each other as shown in FIG. 7(a), the display will be as shown in FIG. 7(b).

Bimorph 25. -1.25-2.25-3.25. −
4... need to be fixedly arranged on the board 29. in this case.

Since one braille is composed of six dots, the bimorphs 30-1, 30-2 and 30-3 are divided into three as shown in Figure 7(c).
They are stacked in tiers, and rods 31-1, 31-2 and 31-3 made of synthetic resin such as nylon are placed at the tips of each. The tip of each rod 31-1 to 31-3 is the board 3
Dot portions d protruding from the holes H-1 to H-3 formed in 2.
is formed. In this case, the length of the dot part d is the hole H
The stone is constructed to be 0.4 to 0.5 ■ longer than -1 to H-3.

As shown in FIG. 8(A), a substrate 33-1 on which the bimorph 30-1 etc. are supported, a substrate 33-2 on which the bimorph 30-2 etc. are supported, a bimorph 30-3 etc. The supported substrates 33-3 each have screws 3 through spacers 35-1 and 3''5-2 to the extent that they do not contact adjacent bimorphs when a voltage is applied and the substrates 33-3 are bent.
4 and a nut 36. As shown in FIG. 8(b), a groove 37 is formed in the substrate 33-1, and a pair of lead wires 38, 39, etc. are connected to the upper and lower electrodes of the bimorphs 30-1, 30-4, and so on. has been done. By applying voltage to these lead wires 38, 39..., the tips of the bimorphs 30-1, 30-4... are curved, and the dot part d of the rod placed thereon is placed on the board. A slight protrusion will be formed. In addition, each bimorph 30-1.30-4... lead wire 38.39.
After connecting the bimorphs 30-1, 30-4, and so on, and then forming a protective coating with insulating paint, adhesive is injected into the groove 37 to attach each bimorph 30-1, 30-4, and so on to the substrate 33-IK in a predetermined state. Can be worn open and closed. Also, the board 33-2
．． In the case of VC such as 33-3, each bimorph can be fixed in the same manner.

Another embodiment of the invention is shown in FIG.

When using the rod 31 shown in FIG.
A recess corresponding to this rod 31 is formed on the back side of the board, and a hole 33 through which the dot part d passes is formed in this recess. Since a stone is required, both the processing of the rod 31 and the board 32 require a lot of work. Requires.

Therefore, as shown in FIG. 9(a), only holes 41-1 to 41-3 are formed in the board 4o, and the rod 44 has an outer diameter larger than the inner diameter of the holes 41-1 to 41-3. If you cover the tube 45 and use the ρ rod 44 as a bimorph tip kit, you can create a board 40 with an extremely simple shape.
The rod 44 and tube 45 can constitute a false font display portion. In this case, the tip of the rod 44 is connected to the board 4.
The position of the tube 45 may be adjusted so that it protrudes by about 0.4 to 0.5 m11 from the position of the tube 45, and the tube 45 may be fixed to the rod 44 at that position, if necessary. As for the rod body 44.

For example, nylon can be used.

According to the present invention, by selectively applying a voltage to the bimorph, its tip is curved and driven upward, thereby making it possible to display false characters. In order to reset the display, the upper and lower electrodes of the bimorph can be momentarily shorted to eliminate the charge that has accumulated there.

The false character display device of the present invention provides the following excellent effects.

(1) Since the dot display body that displays false characters is driven and controlled by a bimorph, the drive body is extremely small.

It can be made lighter.

(2) Since a bimorph is used, the driving gravity can be made very small (current on the order of microamperes is possible).

(3) Since bimorph has a large dielectric constant and functions as a capacitor, it can self-maintain its operating state by frost and charges accumulated when voltage is applied to the electrodes, so special self-maintenance means are not required. It is possible to maintain the 0 Braille display state without any trouble. Therefore, the state can be maintained without requiring any special self-holding means to break it off by touching it with a finger.

(4) Bimorph has elasticity and bends when pressed with a finger, and returns to its initial state when this pressing force is removed. It is different and does not cause any discomfort.

(5) Since the tip of the bimorph is located below the hole, it is only necessary to place the dot display on the tip of the bimorph, and there is no need to glue the dot display and the bimorph.

As described above, according to the present invention, it is possible to provide a braille display device that is extremely small, lightweight, and consumes very little power, so it can be used in braille display terminals, portable braille typewriters, etc. It is extremely suitable for use in

In the above description, an example was described in which PZT was used as the bimorph and nylon was used as the rod or rod body, but the present invention is of course not limited to these.

[Brief explanation of the drawing]

Figure 1 is a block diagram of the comprehensive online Braille processing system, Figure 2 is an explanatory diagram of virtual characters, and Figure 3 is a diagram of the Braille display.
Fig. 4 is an explanatory diagram of a conventional braille display electromagnetic drive device, and Fig. 5 is an explanatory diagram of a nokuimorph. Figure 6 shows the curved shape n when voltage is applied to the pi-morph.
Explanatory diagram, Figure 7 is an explanatory diagram of the arrangement relationship between Braille and bimorph,
FIG. 8 is a clear view of the assembled state of the substrate to which the bimorph is fixed and the arrangement and state of the lead wires, and FIG. 9 is a diagram showing the configuration of another embodiment of the present invention. In the figure, 1 is a large computer system, 2 is an intelligent Braille station, 3 is a database (dictionary file),
4 is a file, 5 is a high-speed braille printer, 6 is a high-speed kanji printer, 7 is a braille display terminal, 8 is a kanji display terminal, 9 is a kanji printer,
10 is a high-speed braille printer, '1 iFi braille display terminal, 12-digit portable braille typewriter - 913 is a subscriber telephone line, 14-digit portable braille typewriter - 920 is an electromagnetic coil, 21-digit plunger, 22 is a plunger The tip, 23, is a wire. 24 board, 25 bimorph, 26.27- piezoelectric ceramic element, 28 bimorph reinforcing metal plate, 2
Reference numerals 9 indicate substrates on which a large number of bimorphs are arranged side by side. Patent applicant: Kazuhiko Nakayama; Hatahiko Ogawa; patent attorney: Akira Yamatani 3... 6... 11 +i'd

Claims (2)

[Claims] (1) Braille characterized by comprising a Braille display element that is inserted into a hole formed in a display surface and whose tip can protrude beyond the nucleus hole, and a pi-morph that drives the Braille display element. display device (2) The braille display device according to claim 1, wherein the braille display body is constituted by a rod and a tube attached to the rod.