Braille point display and braille reading device

Abstract

The present application relates to the technical field of Braille reading, and particularly relates to a Braille point display device and a Braille reading device, the Braille point display device comprising a point display assembly, a first ratchet assembly, a second ratchet assembly and a driving gear, the point display assembly comprising a first point display piece and a second point display piece, the first ratchet assembly and the second ratchet assembly are identical in structure and oppositely arranged, the driving gear drives the first ratchet assembly, the first ratchet assembly is in a rotating state, the second ratchet assembly is in a locking state, the first ratchet assembly makes the first point display piece and / or the second point display piece prominent in the point display assembly, and the point display assembly displays a half Braille character; the driving gear drives the second ratchet assembly, the second ratchet assembly is in a rotating state, the first ratchet assembly is in a locking state, the second ratchet assembly makes the first point display piece and / or the second point display piece prominent in the point display assembly, and the point display assembly displays another half Braille character, the Braille point display device is simple in structure, and the prominent display of one Braille character is realized through one driving gear.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of Braille reading, in particular to a Braille point display device and a Braille reading device. BACKGROUND

[0002] The ways for the blind to obtain information include auditory reading and touch reading, and the touch reading relying on fingers has the characteristics of fast reading speed and good information discrimination, and is one of the necessary skills for the blind to communicate with the outside world and interpersonal communication, and is also the main way for the blind to obtain knowledge and information at the present stage. However, the traditional paper Braille books are expensive and have small storage capacity, and it is not convenient for the blind to obtain knowledge and information in the information explosion era. Therefore, the blind need a Braille reading device with low cost, strong experience and instant reading, which can be refreshed.

[0003] The existing Braille reading device displays Braille characters by installing a Braille point display device, which is convenient for the blind to touch and read. The Braille point display device is mainly piezoelectric ceramic type and electromagnetic type, and moves and protrudes the single point display part on the Braille point display device by electromagnetic driving. However, a Braille character is composed of six point display parts arranged in a 2*3 matrix, so six power sources are needed to drive six point display parts to protrude and display a Braille character, and the structure of such Braille point display device is complex. SUMMARY

[0004] Based on the above problems existing in the prior art, the present application provides a simple structure Braille point display device, which can realize the protruding display of a Braille character by only one power source.

[0005] The technical scheme adopted by the present application to solve the technical problems is to provide a Braille point display device, which comprises a point display assembly, a first ratchet assembly and a second ratchet assembly connected with the point display assembly, and a driving gear connected with the first ratchet assembly and the second ratchet assembly, the point display assembly comprises a first point display part and a second point display part, the first ratchet assembly and the second ratchet assembly are the same in structure and are oppositely arranged, the driving gear rotates and drives the first ratchet assembly, the first ratchet assembly is in a rotating state, the second ratchet assembly is in a locking state, the first ratchet assembly drives the first point display part and / or the second point display part to move axially and protrude from the point display assembly; the driving gear reversely rotates and drives the second ratchet assembly, the second ratchet assembly is in a rotating state, the first ratchet assembly is in a locking state, and the second ratchet assembly drives the first point display part and / or the second point display part to move axially and protrude from the point display assembly.

[0006] Further, the first ratchet assembly comprises a ratchet connected with the driving gear, and the ratchet is provided with a first protrusion and a second protrusion opposite to the first protrusion, and the first protrusion and the second protrusion are provided with a first recess and a second recess.

[0007] Further, eight directional grooves are uniformly arranged on the circumferential side wall of the ratchet, and the eight directional grooves are the same distance from the center of the ratchet.

[0008] Further, the first ratchet assembly further comprises a mounting seat, and the mounting seat is provided with a mounting groove for mounting the ratchet, and a receiving groove in communication with the mounting groove is arranged beside the mounting groove, and an elastic member is mounted in the receiving groove.

[0009] Further, one end of the elastic member is located in the receiving groove, and the other end of the elastic member extends into the mounting groove and the directional groove, and the elastic member cooperates with the directional groove to enable the ratchet to rotate in one direction only.

[0010] Further, the center of the mounting groove is provided with a transmission shaft connecting the first ratchet assembly and the second ratchet assembly, and the transmission shaft is provided with a transmission part, and the two ends of the transmission part are provided with rotating parts, and the rotating parts are rotatably connected with the mounting seat.

[0011] Further, the ratchet is provided with a containing groove, and the edge of the containing groove is surrounded by a plurality of ratchet grooves, and the plurality of ratchet grooves are in communication with the containing groove.

[0012] Further, the containing groove is mounted with a ratchet connected with the transmission part, and the ratchet is provided with a ratchet tooth made of elastic material, and the ratchet tooth can push the ratchet to rotate in one direction through the ratchet groove.

[0013] Further, the first ratchet assembly further comprises a driven gear engaged with the driving gear, and the driven gear is connected with the transmission part.

[0014] The second purpose of the present application is to provide a Braille reading device with the Braille point display device according to any one of the above-mentioned schemes.

[0015] The beneficial effects of the present application are: the present application provides a Braille point display device, comprising a point display assembly, a first ratchet assembly and a second ratchet assembly connected with the point display assembly, and a driving gear connected with the first ratchet assembly and the second ratchet assembly, the point display assembly comprises a first point display piece and a second point display piece, the first ratchet assembly and the second ratchet assembly are the same structure and oppositely arranged, the driving gear rotates and drives the first ratchet assembly, the first ratchet assembly is in a rotating state, the second ratchet assembly is in a locking state, the first ratchet assembly makes the first point display piece and / or the second point display piece axially move and protrude from the point display assembly, and the point display assembly protrudes to display half a Braille character; the driving gear reversely rotates and drives the second ratchet assembly, the second ratchet assembly is in a rotating state, the first ratchet assembly is in a locking state, and the second ratchet assembly makes the first point display piece and / or the second point display piece axially move and protrude from the point display assembly, and the point display assembly protrudes to display another half Braille character, thereby forming a complete Braille character. The Braille point display device has simple structure, and only one driving gear can realize protruding display of one Braille character. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in combination with the drawings and examples.

[0017] Figure 1 Fig. 1 shows the overall structure of a Braille point display device;

[0018] Figure 2 Fig. 2 shows the structure of a Braille point display device; Figure 1 Fig. 3 shows the structure of a Braille point display device from another perspective;

[0019] Figure 3 Fig. 4 shows the structure of a Braille point display device from another perspective; Figure 1 Fig. 5 shows the structure of a Braille point display device from another perspective;

[0020] Figure 4 Fig. 6 shows the top view of a Braille point display device; Figure 1 Fig. 7 shows the A-A sectional view of a Braille point display device;

[0021] Figure 5 Fig. 8 shows the B-B sectional view of a Braille point display device; Figure 4 Fig. 9 shows the structure of a first ratchet assembly in state one;

[0022] Figure 6 Fig. 10 shows the structure of a first ratchet assembly in state two; Figure 4 Fig. 11 shows the structure of a first ratchet assembly in state three; and

[0023] Figure 7 Fig. 12 shows the structure of a first ratchet assembly in state four;

[0024] Figure 8 Fig. 13 shows the structure of a first ratchet assembly in state five;

[0025] Figure 9 Fig. 3 shows a structural schematic view of the first ratchet assembly in state three;

[0026] Figure 10 Fig. 4 shows a structural schematic view of the first ratchet assembly in state four;

[0027] Figure 11 Fig. 5 shows a structural schematic view of the first ratchet assembly in state five;

[0028] Figure 12 Fig. 6 shows a structural schematic view of the first ratchet assembly in state six;

[0029] Figure 13 Fig. 7 shows a structural schematic view of the first ratchet assembly in state seven;

[0030] Figure 14 Fig. 8 shows a structural schematic view of the first ratchet assembly in state eight;

[0031] In the drawings, reference numerals: 100, Braille point indicator; 10, first ratchet assembly; 11, mounting seat; 111, mounting groove; 112, receiving groove; 113, first guide hole; 12, transmission shaft; 121, transmission part; 122, rotating part; 13, driven gear; 131, through hole; 14, ratchet; 141, first protruding part; 142, second protruding part; 143, first recessed part; 144, second recessed part; 145, orientation groove; 1451, abutting surface; 1452, sliding surface; 146, accommodating groove; 1461, ratchet groove; 1462, first pushing surface; 1463, first sliding surface; 15, pawl; 151, through hole; 152, ratchet tooth; 153, second pushing surface; 154, second sliding surface; 16, elastic member;

[0032] 20, second ratchet assembly; 30, driving gear;

[0033] 40, point indicating assembly; 41, point indicating seat; 411, second guide hole; 412, abutting part; 42, first point indicating member; 421, protrusion; 422, spring; 43, second point indicating member. DETAILED DESCRIPTION

[0034] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be described in detail with reference to the drawings. The drawings are simplified schematic views, which only schematically illustrate the basic structure of the present application, and thus only show the configurations related to the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] The present application provides a Braille reader comprising a central processing unit, a memory connected with the central processing unit and a driving assembly, the driving assembly is connected with a plurality of Braille point display devices 100. The memory stores information text, the central processing unit converts the information text in the memory into Braille code information and electrical signals in sequence, and the driving assembly drives the plurality of Braille point display devices 100 to display Braille characters according to the electrical signals, so as to facilitate the blind to read by touch.

[0036] In some embodiments, the central processing unit can also be connected with a communication module for obtaining network information. The communication module can be a 4G / 5G wireless communication module for obtaining text information on the network through a cellular mobile communication network provided by a mobile network operator; the communication module can also be a WiFi wireless communication module for obtaining text information on the network through a WIFI wireless local area network technology; the communication module can also be a Bluetooth wireless communication module for transmitting documents to the memory through other devices (such as mobile phones, computers, etc.).

[0037] The Braille reader of the present application comprises the Braille point display device 100 provided by any of the embodiments described below, because the Braille reader has all the technical features of the Braille point display device 100 provided by any of the embodiments described below, so it has the same technical effects as the Braille point display device 100.

[0038] Reference Figure 1 and Figure 2 In some embodiments, the Braille point display device 100 comprises a point display assembly 40, a first ratchet assembly 10 and a second ratchet assembly 20 connected with the point display assembly 40, and a driving assembly connected with a driving gear 30. The first ratchet assembly 10 and the second ratchet assembly 20 are oppositely arranged, and the first ratchet assembly 10 and the second ratchet assembly 20 are the same in structure. The driving gear 30 is connected with the first ratchet assembly 10 and the second ratchet assembly 20, and the driving assembly drives the first ratchet assembly 10 and the second ratchet assembly 20 through the driving gear 30 to highlight the Braille characters of the point display assembly 40 according to the electrical signals sent by the central processing unit, so as to facilitate the blind to read by touch. In some embodiments, a partition (not shown in the figure) is further arranged between the first ratchet assembly 10 and the second ratchet assembly 20 to avoid mutual interference between the first ratchet assembly 10 and the second ratchet assembly 20, which affects the display of the point display assembly 40.

[0039] Reference Figures 2-5As shown, in some embodiments, the first ratchet assembly 10 comprises a mounting base 11, a driven gear 13 arranged on the mounting base 11, and a ratchet 14 connected with the driven gear 13. The mounting base 11 is provided with a mounting groove 111 for mounting the ratchet 14, one side of the mounting groove 111 is provided with a receiving groove 112 in communication with the mounting groove 111, and the center of the mounting groove 111 is provided with a transmission shaft 12 connecting the first ratchet assembly 10 and the second ratchet assembly 20. The mounting base 11 is also provided with three first guide holes 113 near one end of the point display assembly 40, the first guide holes 113 extend axially from the end face of the mounting base 11 to the mounting groove 111 and communicate with the mounting groove 111. The transmission shaft 12 is provided with a prismatic transmission part 121, both ends of the transmission part 121 are provided with cylindrical rotating parts 122, and the transmission part 121 is coaxial with the rotating parts 122. The transmission shaft 12 is rotationally connected with the mounting base 11 through the rotating parts 122, the transmission part 121 is located in the first ratchet assembly 10 and the second ratchet assembly 20, and the transmission part 121 is drivingly connected with the first ratchet assembly 10 and the second ratchet assembly 20. In this embodiment, the transmission part 121 is a quadrangular prism, and in other embodiments, the transmission part 121 can also be a triangular prism, a pentagonal prism, etc.

[0040] In some embodiments, in combination with Figure 2 As shown, the center of the driven gear 13 is provided with a through hole 131 with the same cross-sectional size as the transmission part 121, and the driven gear 13 is sleeved on the transmission part 121 through the through hole 131. The driven gear 13 is meshingly connected with the driving gear 30, and the driving gear 30 can drive the driven gear 13 to rotate, and the driven gear 13 can drive the entire transmission shaft 12 to rotate through the transmission part 121.

[0041] In some embodiments, in combination with Figure 4 As shown, the center of the ratchet 14 is provided with a receiving groove 146, and the receiving groove 146 is provided with a pawl 15 drivingly connected with the ratchet 14 and the transmission shaft 12. The edge of the ratchet 14 is provided with a first protrusion 141, a second protrusion 142 corresponding to the first protrusion 141, and a first recess 143 and a second recess 144 between the first protrusion 141 and the second protrusion 142. The angle of the first protrusion 141 corresponding to the central angle of the ratchet 14 is 45°, the angle of the first recess 143 corresponding to the central angle of the ratchet 14 is 135°, the angle of the second protrusion 142 corresponding to the central angle of the ratchet 14 is 135°, and the angle of the second recess 144 corresponding to the central angle of the ratchet 14 is 45°.

[0042] The circumferential side wall of the ratchet wheel 14 is also uniformly provided with eight directional grooves 145, the eight directional grooves 145 are at the same distance from the center of the ratchet wheel 14, and the two sides of the directional groove 145 are respectively the abutting surface 1451 and the sliding surface 1452. Specifically, one directional groove 145 is arranged on the circumferential side wall of the first convex part 141, three directional grooves 145 are arranged on the circumferential side wall of the second convex part 142, three directional grooves 145 are arranged on the circumferential side wall of the first concave part 143, and one directional groove 145 is arranged on the circumferential side wall of the second concave part 144. The edge of the accommodation groove 146 is provided with a plurality of ratchet grooves 1461 in communication with the accommodation groove 146, and the plurality of ratchet grooves 1461 are continuously arranged around the accommodation groove 146. The two side walls of the ratchet groove 1461 are respectively the first sliding surface 1463 and the first pushing surface 1462.

[0043] In some embodiments, in combination with Figure 2 and Figure 4 As shown, the pawl 15 is centrally provided with a through hole 151 with the same cross-sectional size as the transmission part 121, and the edge of the pawl 15 is provided with a ratchet tooth 152 corresponding to the plurality of ratchet grooves 1461. The side wall of the ratchet tooth 152 includes the second sliding surface 154 corresponding to the first sliding surface 1463 and the second pushing surface 153 corresponding to the first pushing surface 1462. The ratchet tooth 152 is made of elastic material. The pawl 15 is sleeved on the transmission part 121 through the through hole 151, and the transmission part 121 can drive the pawl 15 to rotate in the accommodation groove 146.

[0044] In some embodiments, in combination with Figure 4 As shown, the first ratchet wheel assembly 10 further includes an elastic member 16, one end of the elastic member 16 is installed in the accommodation groove 112, and the other end of the elastic member 16 extends into the installation groove 111 and the directional groove 145 and is parallel to the sliding surface 1452. When the ratchet wheel 14 rotates clockwise, the sliding surface 1452 can push the end of the elastic member 16 to make the end of the elastic member 16 away from the directional groove 145, and as the ratchet wheel 14 continues to rotate clockwise, the end of the elastic member 16 enters the next directional groove 145. When the ratchet wheel 14 has a counterclockwise rotation trend, the abutting surface 1451 abuts against the end of the elastic member 16, so that the ratchet wheel 14 cannot rotate counterclockwise. In this embodiment, the elastic member 16 is a torsion spring, and in other embodiments, the elastic member 16 can also be a spring piece.

[0045] In combination with Figure 2 , Figure 4 and Figure 5As shown, when the driving gear 30 rotates counterclockwise relative to the first ratchet assembly 10, the driven gear 13 rotates clockwise. The driven gear 13 drives the pawl 15 to rotate clockwise through the transmission part 121. The second pushing surface 153 of the ratchet tooth 152 abuts against the first pushing surface 1462 of the ratchet groove 1461, and the pawl 15 drives the ratchet wheel 14 to rotate clockwise about the rotation part 122. At this time, the first ratchet assembly 10 is in a rotating state.

[0046] When the driving gear 30 rotates clockwise relative to the first ratchet assembly 10, the driven gear 13 rotates counterclockwise. The driven gear 13 drives the pawl 15 to rotate counterclockwise through the transmission part 121. The second sliding surface 154 of the ratchet tooth 152 abuts against the first sliding surface 1463 of the ratchet groove 1461, so that the ratchet wheel 14 has a tendency to rotate counterclockwise. Since the abutting surface 1451 of the directional groove 145 abuts against the end of the elastic member 16, the ratchet wheel 14 cannot rotate counterclockwise. As the pawl 15 continues to rotate counterclockwise, the ratchet tooth 152 slides along the first sliding surface 1463 and elastically deforms, and the ratchet tooth 152 restores to its original shape after leaving the ratchet groove 1461 and enters the next ratchet groove 1461. At this time, the first ratchet assembly 10 is in a locked state.

[0047] In combination Figure 2 and Figure 5 As shown, since the first ratchet assembly 10 and the second ratchet assembly 20 are oppositely arranged, and the first ratchet assembly 10 and the second ratchet assembly 20 have the same structure. Therefore, the driving gear 30 can simultaneously engage and drive the driven gears 13 in the first ratchet assembly 10 and the second ratchet assembly 20, so as to realize that the driving gear 30 drives the first ratchet assembly 10 and the second ratchet assembly 20 in sequence. When the driving gear 30 rotates clockwise relative to the first ratchet assembly 10, the first ratchet assembly 10 is in a locked state, and the second ratchet assembly 20 is in a rotating state; when the driving gear 30 rotates counterclockwise relative to the first ratchet assembly 10, the first ratchet assembly 10 is in a rotating state, and the second ratchet assembly 20 is in a locked state.

[0048] Reference Figures 2-6As shown, in some embodiments, the point display assembly 40 comprises a point display base 41, a first point display member 42 and a second point display member 43 installed in the point display base 41. The point display base 41 is provided with second guide holes 411 in communication with the first guide holes 113, and the second guide holes 411 are provided with abutting portions 412 therein, and the second guide holes 411 are coaxial with the first guide holes 113. The second guide holes 411 are arranged in a 2x3 matrix, thereby forming a Braille character area. The three second guide holes 411 on the same side of the first ratchet assembly 10 form a first guide hole group, and the three second guide holes 411 are respectively in communication with the three first guide holes 113 on the first ratchet assembly 10. The three second guide holes 411 on the same side of the second ratchet assembly 20 form a second guide hole group, and the three second guide holes 411 are respectively in communication with the three first guide holes 113 on the second ratchet assembly 20.

[0049] In some embodiments, the point display assembly 40 is combined with the first ratchet assembly 10 and the second ratchet assembly 20. Figures 4-6 As shown, the first point display member 42 and the second point display member 43 are provided with protrusions 421, and the first point display member 42 and the second point display member 43 are further provided with springs 422. The lower end of the spring 422 abuts against the protrusion 421, and the upper end of the spring 422 abuts against the abutting portion 412. The length of the second point display member 43 is greater than the length of the first point display member 42, and the first point display member 42 and the second point display member 43 are inserted into the second guide hole 411, and the lower end of the first point display member 42 and the second point display member 43 passes through the first guide hole 113 and extends into the installation groove 111 and abuts against the circumferential side wall of the ratchet 14. In the first guide hole group, the second point display member 43 is provided with two, and the two second point display members 43 are respectively located in the second guide holes 411 at the ends of the first guide hole group; the first point display member 42 is provided with one, and the first point display member 42 is located in the second guide hole 411 in the middle of the first guide hole group. The arrangement of the first point display member 42 and the second point display member 43 in the second guide hole group is the same as that of the first point display member 42 and the second point display member 43 in the first guide hole group.

[0050] Reference is made to Figures 6-13As shown, when the lower end of the first pointer 42 and / or the second pointer 43 abuts against the first recess 143 and / or the second recess 144, the upper end of the first pointer 42 and / or the second pointer 43 is flush with the upper surface of the pointing seat 41, and the spring 422 is in a compressed state or an original length state; when the upper end of the first pointer 42 and / or the second pointer 43 abuts against the first protrusion 141 and / or the second protrusion 142, the upper end of the first pointer 42 and / or the second pointer 43 protrudes from the upper surface of the pointing seat 41, and the spring 422 is in a compressed state. In some embodiments, the first protrusion 141, the second protrusion 142, the first recess 143, and the second recess 144 are arc-shaped transitions, so as to facilitate the lower end of the first pointer 42 or the second pointer 42 to slide on the circumferential side wall of the ratchet wheel 14.

[0051] The state in which the upper end of the first pointer 42 or the second pointer 43 protrudes from the upper surface of the pointing seat 41 is defined as 1, and the state in which the upper end of the first pointer 42 or the second pointer 43 is flush with the upper surface of the pointing seat 41 is defined as 0. Therefore, the state of one ratchet wheel 14 can be represented according to the states of one first pointer 42 and two second pointers 43 abutting against it.

[0052] In one embodiment, the first protrusion 141 and the second protrusion 142 are arranged on the circumferential side wall of the ratchet wheel 14, and the first recess 143 and the second recess 144 are arranged on the upper surface of the pointing seat 41. Figure 7 As shown, for the ratchet wheel 14 in the first ratchet wheel assembly 10, the first protrusion 141 abuts against the lower end of the first pointer 42, and the first pointer 42 protrudes from the upper surface of the pointing seat 41, with a state code of 1; the lower end of the second pointer 43 on the left side of the first pointer 42 is located in the second recess 144, and the upper end of the second pointer 43 on the left side of the first pointer 42 is flush with the upper surface of the pointing seat 41, with a state code of 0; and the lower end of the second pointer 43 on the right side of the first pointer 42 is located in the second recess 144, and the upper end of the second pointer 43 on the right side of the first pointer 42 is flush with the upper surface of the pointing seat 41, with a state code of 0. At this time, the state code corresponding to the ratchet wheel 14 is 001.

[0053] In one embodiment, the first protrusion 141 and the second protrusion 142 are arranged on the circumferential side wall of the ratchet wheel 14, and the first recess 143 and the second recess 144 are arranged on the upper surface of the pointing seat 41. Figure 9 As shown, for the ratchet wheel 14 in the first ratchet wheel assembly 10, the lower end of the first pointer 42 and the second pointer 43 on the left side of the first pointer 42 both abut against the second protrusion 142, and the first pointer 42 and the second pointer 43 on the left side of the first pointer 42 protrude from the upper surface of the pointing seat 41, with state codes of 1; the lower end of the second pointer 43 on the right side of the first pointer 42 is located in the second recess 144, and the upper end of the second pointer 43 on the right side of the first pointer 42 is flush with the upper surface of the pointing seat 41, with a state code of 0. At this time, the state code corresponding to the ratchet wheel 14 is 110.

[0054] Similarly, the ratchet 14 in the first ratchet assembly 10 has 8 different states, and the ratchet 14 in the second ratchet assembly 20 also has the same 8 states. It can be understood that the two ratchets 14 in the Braille point display 100 have a total of 64 combined states, which can meet the display needs of Braille characters. The 8 states of the two ratchets 14 are encoded in binary form, and the rotation direction of the driving gear 30 can also be encoded in binary form, so as to facilitate the processing of the central processing unit. In combination with Figures 6-13 As shown in Table 1 below, the 8 states of the ratchet 14 and the corresponding codes are shown.

[0055] Table 1, 8 states of the ratchet 14 and the corresponding codes

[0056] State One State Two State Three State Four State Five State Six State Seven State Eight 100 010 101 110 111 011 001 000

[0057] In summary, the working process of the Braille point display 100 and the Braille reading device provided by the present application is as follows: the central processing unit converts the text information stored in the memory into Braille code information and an electrical signal, and the driving assembly first drives the driving gear 30 to rotate counterclockwise relative to the first ratchet assembly 10 according to the electrical signal, the driven gear 13 in the first ratchet assembly 10 rotates clockwise, the first ratchet assembly 10 is in a rotating state, and the second ratchet assembly 20 is in a locked state. When the ratchet 14 in the first ratchet assembly 10 rotates to the target state, the first point display piece 42 and the second point display piece 43 corresponding to the first ratchet assembly 10 protrude from or are flush with the upper surface of the point display seat 41. At this time, the Braille point display 100 protrudes to display half of a Braille character.

[0058] The driving assembly then drives the driving gear 30 to rotate clockwise relative to the first ratchet assembly 10 according to the electrical signal, the first ratchet assembly 10 is in a locked state, and the second ratchet assembly 20 is in a rotating state. When the ratchet 14 in the second ratchet assembly 20 rotates to the target state, the first point display piece 42 and the second point display piece 43 corresponding to the second ratchet assembly 20 protrude from or are flush with the upper surface of the point display seat 41. At this time, the Braille point display 100 protrudes to display the entire Braille character, and the blind person can read the Braille character by touching.

[0059] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection or integral connection, it can be mechanical connection, it can be direct connection or indirect connection through intermediate medium, it can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0061] The above description, based on the preferred embodiments of the present invention, provides guidance. Those skilled in the art can make various changes and modifications without departing from the scope of the invention. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A Braille dot display, characterized by: The application relates to a point display device, which comprises a point display assembly, a first ratchet assembly and a second ratchet assembly connected with the point display assembly, and a driving gear connected with the first ratchet assembly and the second ratchet assembly, wherein the point display assembly comprises a first point display part and a second point display part, the first ratchet assembly and the second ratchet assembly are identical in structure and oppositely arranged, the driving gear rotates and drives the first ratchet assembly, the first ratchet assembly is in a rotating state, the second ratchet assembly is in a locking state, the first ratchet assembly drives the first point display part and / or the second point display part to move axially and highlight the point display assembly; the driving gear reversely rotates and drives the second ratchet assembly, the second ratchet assembly is in a rotating state, the first ratchet assembly is in a locking state, the second ratchet assembly drives the first point display part and / or the second point display part to move axially and highlight the point display assembly; the first ratchet assembly comprises a ratchet wheel connected with the driving gear, the ratchet wheel is provided with a first protrusion and a second protrusion opposite to the first protrusion, and a first recess and a second recess are arranged between the first protrusion and the second protrusion; eight directional grooves are uniformly arranged on the circumferential side wall of the ratchet wheel, and the eight directional grooves are identical in distance from the center of the ratchet wheel; the first ratchet assembly further comprises a mounting seat, the mounting seat is provided with a mounting groove for mounting the ratchet wheel, a receiving groove in communication with the mounting groove is arranged beside the mounting groove, and an elastic part is mounted in the receiving groove; one end of the elastic part is located in the receiving groove, the other end of the elastic part extends into the mounting groove and the directional groove, the elastic part cooperates with the directional groove to enable the ratchet wheel to rotate in one direction only; the center of the mounting groove is provided with a transmission shaft connecting the first ratchet assembly and the second ratchet assembly, the transmission shaft is provided with a transmission part, two ends of the transmission part are provided with rotating parts, and the rotating parts are rotatably connected with the mounting seat; the ratchet wheel is provided with a containing groove, a plurality of ratchet grooves are arranged around the edge of the containing groove, and the plurality of ratchet grooves are in communication with the containing groove; the containing groove is mounted with a pawl connected with the transmission part, the pawl is provided with ratchet teeth made of elastic material, and the ratchet teeth can push the ratchet wheel to rotate in one direction only through the ratchet grooves.

2. The Braille dot visualizer of claim 1, wherein: The first ratchet assembly further comprises a driven gear engaged with the driving gear in transmission, and the driven gear is connected with the transmission part.

3. A Braille reading device, characterized by: The application further relates to a Braille point display device as claimed in any one of claims 1-2. The application further relates to a Braille point display device as claimed in any one of claims 1-2.

Images