CN214847332U - Electromagnetic drive type braille reader - Google Patents
Electromagnetic drive type braille reader Download PDFInfo
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- CN214847332U CN214847332U CN202120997054.5U CN202120997054U CN214847332U CN 214847332 U CN214847332 U CN 214847332U CN 202120997054 U CN202120997054 U CN 202120997054U CN 214847332 U CN214847332 U CN 214847332U
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- braille
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- square matrix
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Abstract
An electromagnetic drive type braille reader comprises a plurality of contact square matrix units, wherein each contact square matrix unit comprises a main body module, a contact rod and a driving device, the main body module is a rectangular frame and comprises a touch pad, two side plates and a bottom plate, the touch pad is provided with installation through holes, the number of the installation through holes is the same as that of the contact rods, the upper parts of the contact rods are installed in the installation through holes, the lower parts of the contact rods are respectively connected with one driving device, an internal magnetic field of an electrified solenoid is constantly changed under the action of electric pulses, and magnets vibrate up and down in the magnetic field to further drive the contact rods to vibrate up and down so as to complete the display of one braille contact; the mounting through holes on the two adjacent contact square matrix units are arranged in a staggered manner. The utility model provides an electromagnetic drive formula braille reader simple structure, portable, with low costs.
Description
Technical Field
The utility model belongs to the technical field of mechanical engineering and electronic engineering technique and specifically relates to an electromagnetic drive formula braille reader is related to.
Background
According to the eyesight report issued by the World Health Organization (WHO)2019, 10.10.10.10.4 and the like, the number of the blind people is continuously increased due to aging of the population, change of life style and the like. China is the country with the most people worldwide and the country with the most blind people. In recent years, blind readers are continuously researched and developed at home and abroad, although scholars at home and abroad develop braille point display devices in various driving modes, the braille point display driving mechanism which is successfully applied at present only has a piezoelectric ceramic type. The piezoelectric ceramic braille point display device has low power consumption, high refreshing speed and light weight, can provide larger supporting force, but also has the following defects: the production and processing technology is complicated, the manufacturing cost of parts is high, and the popularization of the piezoelectric ceramic type braille dot displayer is limited. Researchers are more concerned about the development of electromagnetic braille dot display devices. The existing electromagnetic type braille point display mainly utilizes an electromagnetic coil to be electrified with direct current to generate a magnetic field, so that the salient points of the braille are jacked up, the energy consumption is high, the heat dissipation capacity is large, and great improvement is needed.
Disclosure of Invention
In order to overcome the defects existing in the prior art, the utility model provides an electromagnetic drive type braille reader with simple structure, convenient to carry and low cost.
The utility model provides a technical scheme that its technical problem adopted is:
an electromagnetic drive type braille reader comprises a plurality of contact square matrix units, wherein each contact square matrix unit comprises a main body module, a contact rod and a driving device, the main body module is a rectangular frame and comprises a touch pad, two side plates and a bottom plate, the touch pad is provided with an installation through hole, the number of the installation through holes is the same as that of the contact rods, the upper part of each contact rod is installed in the installation through hole, the lower part of each contact rod is respectively connected with one driving device, each driving device comprises an electrified solenoid and a section of magnet positioned at the bottom of the electrified solenoid, the lower part of each contact rod is positioned in the electrified solenoid and is directly contacted with the magnet, and the middle part of each contact rod is provided with an annular flange for limiting; the internal magnetic field of the electrified solenoid is constantly changed under the action of electric pulses of the control system, the magnet is driven to vibrate up and down in the magnetic field, and the touch rod is further driven to vibrate up and down, so that the display of a Braille contact is completed;
the installation through holes on two adjacent contact square matrix units are arranged in a staggered mode, the contact rod arrangement of each contact square matrix unit is arranged according to a square Braille display unit, and the square Braille display unit is formed by combining six concave-convex point arrangements formed by six contact rods in three rows and two columns and different heights.
Furthermore, the salient point at the top of the feeler lever is in the shape of the outline of a parabolic rotating curved surface.
Still further, eight contact square matrix units are arranged.
The beneficial effects of the utility model are that: the device drives the contact rod to vibrate up and down to form different arrays of Braille contacts through the action of an excited alternating magnetic field on the magnet under the action of electric pulses of the electrified solenoid; the main body module consists of two layers of flat plates, and the two flat plates are light and thin and are convenient to process and install; the salient point at the top of the contact rod passes through the mounting through hole on the touch pad, so that the operation is more stable and light; the braille reader has the advantages of low energy consumption, low cost, convenient processing and manufacturing, easy popularization and promotion, and better social benefit and application value.
Drawings
Fig. 1 is a schematic diagram of a contact matrix unit according to the present invention.
FIG. 2 is a schematic diagram of a combined unit of energized solenoid, feeler lever and magnet.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, an electromagnetic vibration type braille reader comprises a plurality of contact square matrix units, wherein each contact square matrix unit comprises a main body module, a contact rod 2 and a driving device, the main body module is a rectangular frame and comprises a touch pad 12, two side plates 10 and a bottom plate 11, the touch pad 12 is provided with mounting through holes 101, the number of the mounting through holes 101 is the same as that of the contact rods 2, the upper parts of the contact rods 2 are mounted in the mounting through holes 101, the lower parts of the contact rods 2 are respectively connected with the driving devices, each driving device comprises an electrified solenoid 3 and a section of magnet 4 positioned at the bottom of the electrified solenoid 3, the lower parts of the contact rods 2 are positioned in the electrified solenoid 4 and are in direct contact with the magnet 4, and the middle parts of the contact rods 2 are provided with annular flanges for limiting; the internal magnetic field of the electrified solenoid 3 is constantly changed under the action of electric pulses of the control system, and the magnet 4 vibrates up and down in the magnetic field to further drive the touch rod 2 to vibrate up and down so as to complete the display of a Braille contact;
the installation through holes on two adjacent contact square matrix units are arranged in a staggered mode, the contact rod arrangement of each contact square matrix unit is arranged according to a square Braille display unit, and the square Braille display unit is formed by combining six concave-convex point arrangements formed by six contact rods in three rows and two columns and different heights.
As shown in fig. 1, the touch panel 12 is provided with vertical mounting through holes for mounting the touch bars 2.
The side plate 10, the touch panel 12 and the touch rod 2 of the main body module 1 are made of non-magnetic materials such as aluminum alloy, plastic or stainless steel.
The utility model discloses both be applicable to the six braille points of preparation point display ware. The touch area on the touch pad contains 48 contacts in total, one side contains 6 contacts, and the other side contains 8 sides in total. The diameter of the salient point of the Braille point is 1.5mm, the height of the contact bulge is 1.5mm, the dot pitch is 2.5mm, and the square pitch is 3.5 mm.
The mounting through holes 101 on the touch panels of the main body module are aligned in a row, but the mounting through holes of two adjacent touch panels 12 are arranged in a staggered manner to save space.
Furthermore, the salient point at the top of the feeler lever is in the outline shape of a parabolic rotating curved surface, so that the touch of the fingers of the blind is facilitated;
the electrified solenoid 3 adopts the skeleton form, is equipped with skeleton centre bore, both ends on the skeleton and has the flange, and the skeleton plays supporting role to the solenoid, and when feeler lever 2 upwards vibrated, the annular flange and the contact of skeleton tip flange of feeler lever, skeleton tip flange played limiting displacement to the feeler lever.
The left side and the right side of the touch panel 12 both extend to the side plate 10, and threaded holes are formed in the side plate 10 to fix the side plate 10 and the touch panel 12 together, so that the whole device is connected into a whole.
When the electrified solenoid 3 is electrified and electric pulses are input, a magnetic field with constantly changing direction is excited at the central hole of the framework, and the magnet 4 vibrates up and down under the action of the magnetic field, so that the contact rod on the magnet 4 is driven to vibrate, and then the salient points at the top of the contact rod vibrate up and down along the axis direction of the mounting through hole 101. Because each solenoid 3, the touch stick 2 works independently, the "bump" and "flat spot" of braille can be displayed on the touch panel 12, and the bump at the top of the touch stick vibrates as "bump" and otherwise as "flat spot".
It should be noted that the specific embodiments in the present specification are only exemplary of the present invention and are not limited to the scope of the present invention, and any insubstantial changes or modifications are within the scope of the present invention.
Claims (3)
1. An electromagnetic drive formula braille reader which characterized in that: the contact array unit comprises a main body module, a contact rod and a driving device, wherein the main body module is a rectangular frame and comprises a touch pad, two side plates and a bottom plate, the touch pad is provided with installation through holes, the number of the installation through holes is the same as that of the contact rod, the upper part of the contact rod is installed in the installation through holes, the lower part of the contact rod is respectively connected with the driving device, the driving device comprises an electrified solenoid and a section of magnet positioned at the bottom of the electrified solenoid, the lower part of the contact rod is positioned in the electrified solenoid and is directly contacted with the magnet, and the middle part of the contact rod is provided with an annular flange for limiting; the internal magnetic field of the electrified solenoid is constantly changed under the action of electric pulses of the control system, and the magnet vibrates up and down in the magnetic field to further drive the touch rod to vibrate up and down so as to complete the display of one Braille contact;
the installation through holes on two adjacent contact square matrix units are arranged in a staggered mode, the contact rod arrangement of each contact square matrix unit is arranged according to a square Braille display unit, and the square Braille display unit is formed by combining six concave-convex point arrangements formed by six contact rods in three rows and two columns and different heights.
2. The electromagnetic driven braille reader of claim 1, characterized in that: the salient point at the top of the feeler lever is in the shape of the outline of a parabolic rotating curved surface.
3. An electromagnetically driven braille reader according to claim 1 or 2, characterized in that: eight contact square matrix units are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120997054.5U CN214847332U (en) | 2021-05-11 | 2021-05-11 | Electromagnetic drive type braille reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120997054.5U CN214847332U (en) | 2021-05-11 | 2021-05-11 | Electromagnetic drive type braille reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214847332U true CN214847332U (en) | 2021-11-23 |
Family
ID=78771592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120997054.5U Expired - Fee Related CN214847332U (en) | 2021-05-11 | 2021-05-11 | Electromagnetic drive type braille reader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214847332U (en) |
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2021
- 2021-05-11 CN CN202120997054.5U patent/CN214847332U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |