CN107066101B - Touch display device with self-locking contact pin - Google Patents
Touch display device with self-locking contact pin Download PDFInfo
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- CN107066101B CN107066101B CN201710312724.3A CN201710312724A CN107066101B CN 107066101 B CN107066101 B CN 107066101B CN 201710312724 A CN201710312724 A CN 201710312724A CN 107066101 B CN107066101 B CN 107066101B
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- Prior art keywords
- pole wall
- electromagnetic pole
- needle body
- touch needle
- self
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Educational Administration (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a touch display device with a self-locking contact pin. The upper part of the touch needle body is sleeved with a top sleeve, the top sleeve is provided with a guide rail groove along the vertical axial direction, the upper part of the touch needle body is fixedly connected with a horizontal pin, and the horizontal pin is embedded into the guide rail groove; the lower part of the touch needle body is sleeved in the upper part of the rotary sleeve through self-locking threads to form a screw rod rotating pair, the rotary sleeve is provided with a horizontal through hole, and the permanent magnet iron rod is horizontally arranged in the horizontal through hole in a penetrating manner; the rotary sleeve is connected with a short shaft, the center of the upper end of the bearing base plate is provided with a central hole, and the short shaft is inserted into the central hole to enable the rotary sleeve and the bearing base plate to form a revolute pair connection; the U-shaped electromagnet mainly comprises a left electromagnetic pole wall, a right electromagnetic pole wall and a middle magnetic block, and the bearing base plate is arranged between the left electromagnetic pole wall and the right electromagnetic pole wall of the U-shaped electromagnet and positioned on the middle magnetic block. The device has compact structure, can realize the bulge and self-locking of the touch needle body, and can be used for tactile display of braille or graphics.
Description
Technical Field
The invention relates to an electromagnetic driving device for linear motion, in particular to a touch display device with a self-locking contact pin.
Technical Field
Currently, the number of the blind persons worldwide reaches 2.85 hundred million people, and China is the country with the largest number of the blind persons in the world. Because of impaired vision, the blind can only acquire external information by touch sense and hearing sense, and the traditional method is to make paper into touch sense images or braille dots for the blind to touch and recognize the images or words.
In contrast to conventional paper materials, what is needed for the blind is a tactile display device that can refresh in real time, replacing the visual pixels with contacts, and thus quickly acquire image information. By means of the touch display device refreshed in real time, the blind person can understand the touch image or the text in a natural interaction mode by using the image or the text in the touch cognitive device.
While many similarly functioning haptic assistance devices have appeared on the market, the cost and price are prohibitive and the power consumption is very high, and other small-sized devices, while cost-effective, violate the general touch habits of the blind, and the interactive mode and experience are poor.
Therefore, the blind touch cognitive device which is low in cost, strong in experience, convenient to carry and high in response speed, can realize instant reading, and can refresh and replace visual pixels with contacts rapidly is lacking in the prior art.
Disclosure of Invention
The invention aims to provide a touch display device with a self-locking contact pin, which can touch the up-and-down movement and automatic locking function of a needle body. The touch needle body can be freely combined into the braille touch display device or the graphic touch display device for the blind to sense and perceive braille and graphics, so that the touch needle body can be refreshed in real time, and the power consumption is reduced to a great extent.
The technical scheme adopted for solving the technical problems is as follows:
the invention mainly comprises a plurality of touch single needle components, wherein the touch single needle components comprise a touch needle body, a rotary sleeve, a bearing base plate and a U-shaped electromagnet which are sequentially arranged from top to bottom; the upper part of the touch needle body is sleeved in a top sleeve, guide rail grooves along the vertical axial direction are formed in the inner walls of two symmetrical sides in the top sleeve, horizontal pins are fixedly connected to the outer walls of two symmetrical sides of the upper part of the touch needle body, and the horizontal pins are embedded in the guide rail grooves, so that the touch needle body is limited to move up and down along the vertical axial direction; the lower part of the touch needle body is provided with external threads, the inner hole of the rotary sleeve is provided with internal threads, the lower part of the touch needle body is sleeved in the upper part of the rotary sleeve through self-locking threads to form a screw rod rotating pair, the lower part of the rotary sleeve is provided with a horizontal through hole, and a permanent magnet iron rod is horizontally arranged in the horizontal through hole in a penetrating manner; the center of the lower end of the rotary sleeve is connected with a short shaft, the center of the upper end of the bearing base plate is provided with a central hole, and the short shaft is inserted into the central hole to enable the rotary sleeve and the bearing base plate to form a revolute pair connection; the U-shaped electromagnet is mainly composed of a left electromagnetic pole wall, a right electromagnetic pole wall and a middle magnetic block connected between the bottoms of the left electromagnetic pole wall and the right electromagnetic pole wall, and a bearing base plate is arranged between the left electromagnetic pole wall and the right electromagnetic pole wall of the U-shaped electromagnet and positioned on the middle magnetic block.
The permanent magnet rod is positioned between the left electromagnetic pole wall and the right electromagnetic pole wall, the polarities of the magnetic poles at the two horizontal ends of the permanent magnet rod are opposite, and the polarities of the magnetic poles of the left electromagnetic pole wall and the right electromagnetic pole wall are opposite.
After the U-shaped electromagnet is electrified, the rotary sleeve is driven to rotate by the magnetic attraction of the left electromagnetic pole wall and the right electromagnetic pole wall to the two ends of the permanent magnet rod, and then the touch needle body is driven to move up and down along the vertical axis by the screw rod rotating pair.
The magnetic pole polarities of the left electromagnetic pole wall and the right electromagnetic pole wall are reversed by reversing the energizing current direction of the U-shaped electromagnet, so that the directions of magnetic attraction at two ends of the permanent magnet rod are reversed, the rotating direction of the rotating sleeve is reversed, and finally the touch needle body is reversed along the vertical axial up-and-down moving direction through the screw rod rotating pair.
The lengths of the permanent magnetic rods extending out of the two ends of the horizontal through hole are the same.
The permanent magnetic rod is in transition fit with the horizontal through hole.
The short shaft is in clearance fit with the central hole.
A space for winding an electromagnetic coil is reserved between the bottom of the bearing base plate and the middle magnetic block of the U-shaped electromagnet, and the electromagnetic coil is wound on the middle magnetic block at the bottom of the U-shaped electromagnet.
The invention has the beneficial effects that:
1. the invention adopts a thread automatic locking structure, has good stability and high reliability, can greatly reduce power consumption and electromagnetic heating;
2. the invention can be freely combined and arranged into braille touch display equipment or graphic touch display equipment for the blind to sense the touch and cognize braille and graphics, and has the characteristic of quick refreshing.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a front view of the present invention in both the active and inactive positions.
Fig. 3 is a top view of the present invention in both the active and inactive positions.
Fig. 4 is a schematic diagram of the self-locking of the touch needle head threads of the present invention.
In the figure: 1. the touch needle body comprises a touch needle body 2, a rotary sleeve, 3, a permanent magnet iron rod, 4, a bearing base plate, 5, an electromagnet, 6, a horizontal pin, 7, a self-locking thread, 8, a short shaft, 9, a central hole, 10, a left electromagnetic polar wall, 11, a right electromagnetic polar wall, 12, an electromagnetic coil, 13, a horizontal through hole, 14, a top sleeve, 15 and a guide rail groove.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1, the implementation of the invention comprises a plurality of touch single-needle components, wherein each touch single-needle component is provided with a touch needle body 1, a rotary sleeve 2, a bearing backing plate 4 and a U-shaped electromagnet 5 which are arranged in sequence from top to bottom.
As shown in fig. 1, the upper part of the touch needle body 1 is sleeved with a top sleeve 14, guide rail grooves 15 along the vertical axial direction are formed in the inner walls of two symmetrical sides in the top sleeve 14, horizontal pins 6 are fixedly connected to the outer walls of two symmetrical sides of the upper part of the touch needle body 1, and the horizontal pins 6 are embedded into the guide rail grooves 15, so that the touch needle body 1 is limited to move up and down along the vertical axial direction; the lower part of the touch needle body 1 is provided with external threads, the inner hole of the rotary sleeve 2 is provided with internal threads, the lower part of the touch needle body 1 is sleeved in the upper part of the rotary sleeve 2 through the self-locking threads 7 to form a screw rod rotating pair, the lower part of the rotary sleeve 2 is provided with a horizontal through hole 13, and the permanent magnet iron rod 3 is horizontally arranged in the horizontal through hole 13 in a penetrating manner; the center of the lower end of the rotary sleeve 2 is connected with a short shaft 8, the center of the upper end of the bearing backing plate 4 is provided with a center hole 9, and the short shaft 8 is inserted into the center hole 9 so that the rotary sleeve 2 and the bearing backing plate 4 form a revolute pair connection; the U-shaped electromagnet 5 mainly comprises a left electromagnetic pole wall 10, a right electromagnetic pole wall 11 and a middle magnetic block connected between the bottoms of the left electromagnetic pole wall 10 and the right electromagnetic pole wall 11, and the bearing pad 4 is arranged between the left electromagnetic pole wall 10 and the right electromagnetic pole wall 11 of the U-shaped electromagnet 5 and positioned on the middle magnetic block.
The permanent magnet rod 3 is positioned between the left electromagnetic pole wall 10 and the right electromagnetic pole wall 11, and the polarities of the magnetic poles at the horizontal two ends of the permanent magnet rod 3 are opposite, so that the polarities of the magnetic poles of the left electromagnetic pole wall 10 and the right electromagnetic pole wall 11 are opposite.
The permanent magnet rod 3 and the horizontal through hole 13 are in transition fit, i.e. the diameter of the permanent magnet rod 3 is slightly larger than the diameter of the horizontal through hole 13, so as to ensure that the permanent magnet rod 3 does not shift in the horizontal through hole 13 below the rotating sleeve 2.
The stub shaft 8 and the central bore 9 are in a clearance fit, i.e. the inner diameter of the central bore 9 of the socket plate 4 is slightly larger than the diameter of the stub shaft 8 of the rotating sleeve 2, to ensure that the rotating sleeve 2 can rotate freely on the socket plate 4.
A space for winding an electromagnetic coil 12 is reserved between the bottom of the bearing base plate 4 and the middle magnetic block of the U-shaped electromagnet 5, and the electromagnetic coil 12 is wound on the middle magnetic block at the bottom of the U-shaped electromagnet 5.
As shown in fig. 4, the principle of thread self-locking of the touch single needle component of the invention is as follows:
when the touch needle body slides down along the thread surface, the axial load F Q In order to drive the downward sliding force of the touch needle body, F is the force for preventing the downward sliding of the touch needle body, and F is the friction force f Is opposite to the movement direction of the touch needle body. From F R F and F Q The composed force polygon closure diagram can be obtained:
F＝F Q tan(λ-ρ)
wherein λ represents a thread lead angle, ρ represents a friction angle;
at this time, when the internal thread of the rotary sleeve rotates once, the input work is W 1 ＝F Q S, S represents thread lead, and output work is W 2 ＝Fπd 2 The efficiency of the screw pair is:
wherein d 2 The pitch diameter of the thread, η is the efficiency of the screw pair, λ is the slope of the screw pair, and ρ is the coefficient of friction of the screw pair. When λ is less than or equal to ρ, i.e., η is less than or equal to 0, whichever is F Q The touch needle body cannot move due to large force, and self-locking of the touch needle body can be realized.
The working principle of the invention is as follows:
as shown in fig. 2 and 3, the left side represents the inactive position, and the right side represents the active position, when the electromagnet 5 is supplied with a forward current, the touch needle 1 is in the inactive position. When the electromagnet 5 is electrified with reverse current, the rotary sleeve 2 rotates under the action of electromagnetic force, so that the touch needle body 1 moves upwards and is in a working position.
The process of raising the touch needle to the working position (right side of fig. 2 and 3): by supplying forward current to the electromagnetic coil 12, the left electromagnetic pole wall 11 of the U-shaped electromagnet 5 forms an S pole, the right electromagnetic pole wall 10 forms an N pole, the S pole and the N pole of the permanent magnet rod 3 are respectively attracted, the rotating sleeve 2 is pushed to rotate forward, and the touch needle body 1 is pushed to move upwards through the self-locking thread 7. After power failure, the touch needle body 1 cannot freely move downwards due to self-locking of the self-locking thread 7 and is kept at the working position.
The process of lowering the touch needle to the rest position (left side of fig. 2 and 3): by supplying reverse current to the electromagnetic coil 12, the left electromagnetic pole wall 11 of the U-shaped electromagnet 5 forms an N pole, the right electromagnetic pole wall 10 forms an S pole, the S pole and the N pole of the permanent magnet iron rod 3 are respectively repelled, the rotary sleeve 2 is pushed to reversely rotate, and the touch needle body 1 is pushed to downwards move through the self-locking thread 7.
Therefore, the invention can realize the bulge and self-locking of the touch needle body, can be used for tactile display of braille or graphics, and has remarkable technical effect.
Claims (5)
1. A tactile display device with self-locking stylus, characterized in that: the touch needle comprises a plurality of touch needle members, wherein the touch needle members comprise a touch needle body (1), a rotary sleeve (2), a bearing base plate (4) and a U-shaped electromagnet (5) which are arranged in sequence from top to bottom; in the top sleeve (14) sleeved on the upper part of the touch needle body (1), guide rail grooves (15) along the vertical axial direction are formed in the inner walls of the two symmetrical sides of the inner wall of the top sleeve (14), horizontal pins (6) are fixedly connected to the outer walls of the two symmetrical sides of the upper part of the touch needle body (1), and the horizontal pins (6) are embedded into the guide rail grooves (15) so that the touch needle body (1) is limited to move up and down along the vertical axial direction; the lower part of the touch needle body (1) is provided with external threads, the inner hole of the rotary sleeve (2) is provided with internal threads, the lower part of the touch needle body (1) is sleeved in the upper part of the rotary sleeve (2) through self-locking threads (7) to form a screw rod rotating pair, the lower part of the rotary sleeve (2) is provided with a horizontal through hole (13), and the permanent magnet iron rod (3) is horizontally arranged in the horizontal through hole (13) in a penetrating manner; the center of the lower end of the rotary sleeve (2) is connected with a short shaft (8), the center of the upper end of the bearing base plate (4) is provided with a center hole (9), and the short shaft (8) is inserted into the center hole (9) so that the rotary sleeve (2) and the bearing base plate (4) form a revolute pair connection; the U-shaped electromagnet (5) mainly comprises a left electromagnetic pole wall (10), a right electromagnetic pole wall (11) and a middle magnetic block connected between the bottoms of the left electromagnetic pole wall (10) and the right electromagnetic pole wall (11), and the bearing base plate (4) is arranged between the left electromagnetic pole wall (10) and the right electromagnetic pole wall (11) of the U-shaped electromagnet (5) and positioned on the middle magnetic block;
the permanent magnet rod (3) is positioned between the left electromagnetic pole wall (10) and the right electromagnetic pole wall (11), the polarities of the magnetic poles at the horizontal two ends of the permanent magnet rod (3) are opposite, and the polarities of the magnetic poles of the left electromagnetic pole wall (10) and the right electromagnetic pole wall (11) are opposite;
the short shaft (8) is in clearance fit with the central hole (9);
a space for winding an electromagnetic coil (12) is reserved between the bottom of the bearing base plate (4) and the middle magnetic block of the U-shaped electromagnet (5), and the electromagnetic coil (12) is wound on the middle magnetic block at the bottom of the U-shaped electromagnet (5).
2. A stylus self-locking tactile display according to claim 1, wherein: after the U-shaped electromagnet (5) is electrified, the rotating sleeve (2) is driven to rotate through the magnetic attraction force of the left electromagnetic pole wall (10) and the right electromagnetic pole wall (11) to the two ends of the permanent magnet rod (3), and then the touch needle body (1) is driven to move along the vertical axial direction through the screw rod rotating pair.
3. A stylus self-locking tactile display according to claim 1, wherein: the magnetic pole polarities of the left electromagnetic pole wall (10) and the right electromagnetic pole wall (11) are reversed by reversing the energizing current direction of the U-shaped electromagnet (5), so that the magnetic attraction directions of the two ends of the permanent magnet rod (3) are reversed, the rotating direction of the rotating sleeve (2) is reversed, and finally the touch needle body (1) is reversed along the direction of vertical axial movement through the screw rotating pair.
4. A stylus self-locking tactile display according to claim 1, wherein: the lengths of the two ends of the permanent magnet rod (3) extending out of the horizontal through hole (13) are the same.
5. A stylus self-locking tactile display according to claim 1, wherein: the permanent magnet rod (3) is in transition fit with the horizontal through hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710312724.3A CN107066101B (en) | 2017-05-05 | 2017-05-05 | Touch display device with self-locking contact pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710312724.3A CN107066101B (en) | 2017-05-05 | 2017-05-05 | Touch display device with self-locking contact pin |
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| Publication Number | Publication Date |
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| CN107066101A CN107066101A (en) | 2017-08-18 |
| CN107066101B true CN107066101B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710312724.3A Active CN107066101B (en) | 2017-05-05 | 2017-05-05 | Touch display device with self-locking contact pin |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834804B (en) * | 2017-12-11 | 2023-08-18 | 浙江理工大学 | Linear stepper motor for dot matrix image forming and haptic feedback |
| US11436943B2 (en) | 2018-04-24 | 2022-09-06 | Polymer Braille Inc. | Magnetically programmable actuators for tactile conveyance of information |
| WO2019226011A1 (en) * | 2018-05-24 | 2019-11-28 | 주식회사 닷 | Information output device |
| CN108766129A (en) * | 2018-07-05 | 2018-11-06 | 浙江理工大学 | The fixed braille dot matrix molding machine of self-locking type belt |
| CN108735048B (en) * | 2018-07-05 | 2023-10-13 | 浙江理工大学 | Braille display device driven by electromagnetic driving cam self-locking connecting rod |
| CN110033674B (en) * | 2019-01-17 | 2024-02-23 | 浙江理工大学 | Touch sense reproduction rotary self-locking braille lattice display device |
| CN111081121A (en) * | 2019-12-24 | 2020-04-28 | 北京三叶星云互动科技有限公司 | Linear driving device, touch display device and miniature electronic lock |
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