Braille point display

Abstract

A braille point display comprises a shell, an elastic film and a point display part. The shell comprises an upper cover and a lower shell which are connected up and down; a plurality of array-shaped telescopic through holes are formed in the upper cover; a plurality of point display parts capable of lifting independently are respectively mounted in the mounting spaces; each point display piece is provided with a lug boss capable of extending out of the telescopic through hole; the elastic film is fixedly arranged on the bottom surface of the upper cover, is in contact with the top of each point display piece in the mounting space, can elastically cling to the lug boss to extend out of the telescopic through hole along with the rising of the point display piece, and retracts to the lower part of the telescopic through hole when the point display piece descends and resets. Therefore, when the point display piece is driven by the driving assembly to ascend, the protruding part at the top of the point display piece can jack up the elastic film, the protruding part is tightly wrapped by the elastic film, the touch hand feeling of the blind person can be guaranteed, the elastic film is always blocked between the telescopic through hole and the installation space, it is guaranteed that leather and the like worn by fingers cannot enter the installation space, and the safety of the blind person is guaranteed. And the actual use effect of the blind is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blind education equipment, and particularly relates to a Braille point display device. BACKGROUND

[0002] The Braille point display device is an electronic mechanical auxiliary device specially designed for the visually impaired. The Braille point display device displays Braille characters by protruding different dot matrices on a flat surface. Each Braille character is composed of protruding dots and recessed blanks, which are used by the visually impaired to perceive and read through touch. This device can convert electronic text into Braille dot matrix, so that blind users who cannot use general display devices can perceive the text through touch.

[0003] The existing Braille point display device, such as the Braille point display device disclosed in Chinese Patent Application Publication No. CN 119559848 A, has a plurality of telescopic holes arranged on the installation main body, each telescopic hole is respectively used for each columnar point display piece with a protruding part to rise and extend or to descend and retract, so as to form a corresponding Braille dot matrix. However, since the skin on the fingers of the blind is easy to wear and fall off due to long-term touch with the protruding part, the skin is easy to fall into the telescopic hole and cause blockage, thereby causing failure and affecting the normal lifting of the point display piece.

[0004] Therefore, there is a Braille display reader device based on a piezoelectric motor disclosed in Chinese Patent Authorized Publication No. CN 214752483 U, which has an elastic protective film arranged on the surface of the shell to prevent dust and other effects. However, the external protective film has poor tactile feeling in actual use and needs to be improved. SUMMARY

[0005] The purpose of the present application is to provide a Braille point display device with the advantages of preventing dandruff blockage and ensuring the use of tactile feeling.

[0006] In order to achieve the above purpose, the solution of the present application is as follows: A Braille point display device, comprising a shell, an elastic film and a point display piece; The shell comprises an upper cover and a lower shell connected in sequence; the lower shell has an installation space therein, and the upper cover covers the installation space of the lower shell; The upper cover is provided with a plurality of array-shaped telescopic through holes; a plurality of array-shaped point display pieces which can be independently lifted are arranged in the installation space; each point display piece corresponds to each telescopic through hole and has a protruding part which can extend out of the telescopic through hole; The elastic film is fixedly arranged on the bottom surface of the upper cover and contacts the top of each point display piece in the installation space, and can be elastically attached to the protruding part extending out of the telescopic through hole when the point display piece is lifted, and the elastic film is retracted below the telescopic through hole when the point display piece is lowered.

[0007] Furthermore, the elastic film is adhered and fixed or secondary injection-molded on the bottom surface of the upper cover.

[0008] Furthermore, the elastic membrane is provided with a circular hole at the deformation position where the apex of each point display part abuts, and the protrusion is always tightly fitted with the bottom edge of the circular hole in the contracted state or the extended state, and the outer diameter of the circular hole is not greater than the maximum outer diameter of the protrusion.

[0009] Furthermore, at least two cutouts are provided on the outer circumference of the circular hole at the deformation position, and the outer diameter of the area cut out by each cutout is no more than one third of the maximum outer diameter of the protrusion.

[0010] Furthermore, the elastic film is provided with a cutout at a deformation position where the apex of the protrusion of each indicator abuts, and the outer diameter of the area cut by the cutout is no more than one third of the maximum outer diameter of the protrusion.

[0011] Furthermore, there are three incisions at the deformation position, which are connected at the center and distributed radially, and the incisions pass through the upper and lower surfaces of the elastic membrane.

[0012] Furthermore, the upper cover is arranged on the top of the lower shell, and presses and fixes the edges of the elastic membrane between the upper cover and the lower shell.

[0013] Furthermore, the elastic membrane is made of PDMS polydimethylsiloxane or silicone.

[0014] Furthermore, the thickness of the elastic film is 0.05-0.15 mm; Furthermore, the telescopic through hole is provided with an arc chamfer near the lower edge of the elastic membrane.

[0015] With the above technical solution, an elastic membrane is provided on the bottom surface of the upper cover to prevent impurities such as leather from entering the installation space through the telescopic through-hole, thus preventing blockage and affecting the raising and lowering of the display unit. When the display unit is raised by the drive assembly, the raised portion on the top of the display unit lifts the elastic membrane, allowing the elastic membrane to partially elastically cover the raised portion and extend out of the telescopic through-hole as the raised portion extends. The elastic membrane tightly wraps around the raised portion, ensuring a tactile feel for the blind while always blocking the telescopic through-hole and the installation space. This ensures that impurities such as leather worn by fingers do not enter the installation space, resulting in a better user experience. If impurities such as leather fall into the telescopic through-hole above the elastic membrane, they can be removed by simply turning the housing upside down or cleaning with a brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of an embodiment of the present invention; Figure 2 Schematic diagram of an exploded view of an embodiment of the present invention; Figure 3 is a schematic cross-sectional view of an embodiment of the present invention; Figure 4 A use state diagram of the embodiment of the present application; Figure 5 An implementation style one of the elastic film of the embodiment of the present application; Figure 6 An implementation style two of the elastic film of the embodiment of the present application; Figure 7 An implementation style three of the elastic film of the embodiment of the present application; Figure 8 An implementation style three of the elastic film of the embodiment of the present application; Figure 9 An implementation style four of the elastic film of the embodiment of the present application.

[0017] Label explanation: shell 1, upper cover 11, telescopic through hole 111, circular arc chamfer 112, lower shell 12, mounting space 121, elastic film 2, circular hole 21, cutout 22, point display 3, convex part 31. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] As shown in the drawings, a Braille point display of the embodiment of the present application includes a shell 1, an elastic film 2 and a point display 3. Figures 1 to 4

[0020] The shell 1 includes an upper cover 11 and a lower shell 12 connected in sequence; the lower shell 12 has a mounting space 121 therein, and the upper cover 11 covers the mounting space 121 of the lower shell 12; the upper cover 11 can be detachably connected and fixed with the lower shell 12 by screw locking or clamping fixing and the like.

[0021] The upper cover 11 is provided with a plurality of arrayed telescopic through holes 111; a plurality of arrayed point displays 3 which can be independently lifted are installed in the mounting space 121; each point display 3 corresponds to each telescopic through hole 111 one by one and has a convex part 31 which can be extended out of the telescopic through hole 111; the telescopic through hole 111 of the embodiment is described by taking eight as an example, but is not limited thereto, and can also be six in two rows and three columns, and the like.

[0022] ​The elastic film 2 is fixedly arranged on the bottom surface of the upper cover 11 and contacts the top of each point display piece 3 in the mounting space 121, and can be elastically attached to the protruding part 31 extending out of the telescopic through hole 111 as the point display piece 3 rises, and the elastic film 2 retracts below the telescopic through hole 111 when the point display piece 3 is lowered and reset.

[0023] Therefore, in the embodiment, the elastic film 2 is arranged on the bottom surface of the upper cover 11, which can prevent the cortex and other impurities from entering the mounting space 121 through the telescopic through hole 111, and can prevent the point display piece 3 from being affected by the blockage when rising; when the point display piece 3 rises under the drive of the drive assembly (this part can adopt the existing technology, for example, refer to the content disclosed in Chinese patent CN 119559848 A, not shown in the figure), the protruding part 31 on the top of the point display piece 3 can lift the elastic film 2, so that the elastic film 2 partially elastically covers the protruding part 31 and extends out of the telescopic through hole 111 with the protruding part 31, and the elastic film 2 tightly wraps the protruding part 31, which can not only ensure the touch feeling of the blind person, but also always block between the telescopic through hole 111 and the mounting space 121, so that the cortex and other impurities that cause finger wear cannot enter the mounting space 121, and the actual use effect of the blind person is better. If the cortex and other impurities fall into the telescopic through hole 111 above the elastic film 2, they can be removed by inverting the shell 1 or using a brush to clean.

[0024] In the embodiment, the upper cover 11 covers the top of the lower shell 12, and the elastic film 2 can be pressed and fixed around the edge between the upper cover 11 and the lower shell 12. Of course, the elastic film 2 can also be adhered and fixed or secondarily injection molded on the bottom surface of the upper cover 11. In this way, the elastic film 2 can be firmly attached and fixed on the bottom surface of the upper cover 11, which can facilitate the assembly and production of the product.

[0025] In the embodiment, the telescopic through hole 111 near the lower edge of the elastic film 2 can be provided with a circular arc chamfer 112, so as to facilitate the frequent extension or retraction of the elastic film 2 in the telescopic through hole 111, reduce the wear of the elastic film 2, and improve the service life.

[0026] In the embodiment, the elastic film 2 of the embodiment is made of PDMS (Polydimethylsiloxane) polydimethylsiloxane or silicone elastic film material. The thickness of the elastic film 2 can be 0.05-0.15mm, preferably 0.1mm. In this way, the elastic film 2 can smoothly extend or retract into the telescopic through hole 111 with the protruding part 31.

[0027] As shown in Figure 5 In the embodiment, the deformed position of the elastic film 2 for the top of each point display piece 3 to abut against the protruding part 31 can be provided with a circular hole 21, and the protruding part 31 is always in close contact with the bottom edge of the circular hole 21 in the retracted state or the telescopic state, and the outer diameter of the circular hole 21 is not greater than the maximum outer diameter of the protruding part 31.

[0028] The point display 3 of the embodiment takes a cylindrical structure as an example, the convex part 31 is a cylinder with a spherical top surface, a circular hole 21 is arranged at the deformation position on the elastic film 2, which can facilitate the deformation of the deformation position, reduce the resistance of the elastic film 2 to the lifting of the point display 3, and ensure that the elastic film 2 can be elastically attached to the convex part 31; it is beneficial to the normal lifting of the point display 3, and a smaller driving force can be used to realize the lifting of the point display 3, which can effectively reduce the power consumption of the driving assembly.

[0029] Moreover, when the elastic film 2 is lifted with the convex part 31, the circular hole 21 is tightly attached to the top of the convex part 31 to block it, and when the elastic film 2 is in a reset state and the convex part 31 is contracted, the bottom edge of the circular hole 21 is also in contact with the top of the convex part 31 of the point display 3, so that the circular hole 21 can always be in a blocked state, and the bottom edge of the circular hole 21 is always tightly attached to the convex part 31 without any gap, which can prevent impurities from entering the installation space 121.

[0030] Further, as shown in Figure 6 , the outer periphery of the circular hole 21 at the deformation position can be provided with at least two cutouts 22, and the outer diameter of the area cut by each cutout 22 is not greater than one third of the maximum outer diameter of the convex part 31. By providing the cutout 22, the deformation of the deformation position can be further facilitated, and the resistance of the elastic film 2 can be further reduced. As shown in Figure 7 , the cutout 22 at the outer periphery of the circular hole 21 at the deformation position can also be three, which indicates that the number of cutouts 22 is not limited to the embodiment.

[0031] As shown in Figure 8 , the deformation position of the elastic film 2 for the abutment of the apex of the convex part 31 of each point display 3 can also not be provided with a circular hole 21, but only with a cutout 22, which can penetrate or not penetrate the upper and lower surfaces of the elastic film 2, and the outer diameter of the area cut by the cutout 22 is not greater than one third of the maximum outer diameter of the convex part 31. By providing the cutout 22, the deformation of the deformation position can be facilitated, and the resistance of the elastic film 2 to the lifting of the point display 3 can be reduced; when the point display 3 is lifted, the elastic film 2 is tightly attached to the convex part 31, the elastic film 2 is deformed but the cutout 22 is closed by the top surface of the convex part 31, and when the point display 3 is lowered, the elastic film 2 is reset to automatically close the cutout 22, which can also prevent impurities from entering the installation space 121.

[0032] Further, as shown in Figure 9 , the cutout 22 at the deformation position can have three and be radially distributed with their centers connected, and the cutout 22 can penetrate the upper and lower surfaces of the elastic film 2. By providing multiple cutouts 22, the deformation pressure of the elastic film 2 can be further reduced, and the resistance of the elastic film 2 to the lifting of the point display 3 can be further reduced.

[0033] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical scheme falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that equivalent changes and modifications made by those skilled in the art without departing from the principles of the present application shall still fall within the protection scope of the present application.

[0034] In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and is merely for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element being indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" and "several" is two or more, unless otherwise explicitly and specifically limited.

Claims

1. A Braille display, characterized in that: It includes a shell, an elastic membrane and a dot display component; The housing comprises an upper cover and a lower shell connected up and down; the lower shell has an installation space, and the upper cover covers the installation space of the lower shell; The upper cover is provided with a plurality of telescopic through holes in an array; a plurality of independently liftable and distributing point display elements are respectively installed in the installation space; each point display element corresponds to each telescopic through hole and has a protrusion that can extend out of the telescopic through hole; The elastic membrane is fixedly arranged on the bottom surface of the upper cover and contacts the top of each indicator in the installation space. It can elastically and tightly adhere to the raised portion and extend from the telescopic through hole as the indicator rises. When the indicator descends and resets, the elastic membrane retracts under the telescopic through hole.

2. A Braille display according to claim 1, characterized in that: The elastic film is adhered and fixed or secondary injection-molded on the bottom surface of the upper cover.

3. The Braille display according to claim 1, wherein: The elastic membrane is provided with a circular hole at the deformation position where the apex of each point display part abuts. The convex part is always tightly matched with the bottom edge of the circular hole in the contracted or extended state. The outer diameter of the circular hole is not greater than the maximum outer diameter of the convex part.

4. A Braille display according to claim 3, characterized in that: At least two cutouts are provided on the periphery of the circular hole at the deformation position, and the outer diameter of the area cut out by each cutout is no greater than one third of the maximum outer diameter of the protruding portion.

5. The Braille display according to claim 1, wherein: The elastic film is provided with a cutout at a deformation position where the apex of the protrusion of each indicator abuts, and the outer diameter of the area cut by the cutout is not greater than one third of the maximum outer diameter of the protrusion.

6. The Braille display according to claim 5, characterized in that: There are three incisions at the deformation position, which are connected at the center and distributed radially, and the incisions pass through the upper and lower surfaces of the elastic membrane.

7. The Braille display according to claim 1, characterized in that: The upper cover is arranged on the top of the lower shell and presses the edges of the elastic membrane to be fixed between the upper cover and the lower shell.

8. The Braille display according to claim 1, characterized in that: The elastic membrane is made of PDMS polydimethylsiloxane or silicone.

9. A Braille display according to claim 1 or 8, characterized in that: The thickness of the elastic film is 0.05-0.15 mm.

10. The braille display according to claim 1, characterized in that: The telescopic through hole is provided with an arc chamfer near the lower edge of the elastic membrane.

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