A light-shielding and light-focusing film structure for an optical keyboard

Abstract

The utility model discloses a light-shielding and light-gathering film structure of an optical keyboard. The light-shielding and light-gathering film structure of the optical keyboard comprises: a keyboard light-gathering film mechanism and a light-shielding and light-gathering film separation component, wherein the keyboard light-gathering film mechanism comprises a PET protective film, a reflective sheet, and a blue release film, wherein the PET protective film and the reflective sheet are connected and fixed together by gluing, and the laminating process of the reflective sheet and the PET protective film can be more accurately controlled by rotating a movable bolt, closing a pressing plate, and manually tearing off the release film, so as to ensure that the reflective sheet and the PET protective film can be prevented from bending, cracking, or wrinkling when the reflective sheet and the PET protective film are affixed, and accidental damage during the laminating process can be effectively avoided, thereby reducing the possibility of re-operation.

Description

Technical Field

[0001] The utility model relates to the technical field of light-shielding and light-gathering film structures of optical keyboards, in particular to a light-shielding and light-gathering film structure of an optical keyboard. Background Art

[0002] Light-shielding and light-concentrating membrane structure of optical keyboard As a part of electronic equipment, the core technology of optical keyboard is to use optical principles to realize key triggering and signal transmission, so as to provide users with a better user experience. The light-shielding and light-concentrating membrane structure plays an important role in optical keyboards. It directly affects the glossiness, cleanliness and use effect of the keyboard. The optimization of this structure can significantly improve the performance of optical keyboards, making them stand out among many electronic products.

[0003] The prior art discloses a technical solution for a shading and focusing film structure for an optical keyboard, which includes, from top to bottom, a 0.05mm thick PET protective film, a 0.023mm thick (the thickness can be between 0.02-0.03mm) reflective sheet, and a 0.075mm thick blue release film, wherein a circle of 8mm wide (the width can be between 5-10mm) continuous water glue area is provided on the edge of the lower surface of the reflective sheet, 0.007mm black ink is sprayed on the upper surface of the reflective sheet, and a circle of glue dots is provided near the inner circle position of the continuous glue area, and an outward pulling portion is provided on the left side of the PET protective film.

[0004] In this solution, an outward pulling portion is provided on the left side of the PET protective film, and the PET protective film is separated from the blue release film. When a person pulls the pulling portion, the PET protective film will bend and roll up. During the bending and rolling process, the PET protective film may crack or wrinkle due to stress concentration.

[0005] Therefore, it is necessary to provide a light-shielding and light-focusing film structure for an optical keyboard to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a light-shielding and light-focusing film structure for an optical keyboard. By sticking a light-shielding and light-focusing film on the circuit board and under the keys of the optical keyboard, bending or rolling up can be avoided during the separation process of the PET protective film and the blue release film.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] The light-shielding and focusing film structure of the optical keyboard includes: a keyboard focusing film mechanism and a light-shielding and focusing film separation component, the keyboard focusing film mechanism includes a PET protective film, a reflective sheet, and a blue release film, the PET protective film and the reflective sheet are connected and fixed together by glue, the lower end of the reflective sheet is connected and fixed to the blue release film by a separating colloid, the keyboard focusing film mechanism is placed on the upper end of the base frame, the upper end of the base frame is in contact with the blue release film, the middle end of the base frame is provided with a through rectangular structure, one end of the base frame is connected and fixed by a hinge sleeve by hot melting, a movable bolt is connected through the inside of the hinge sleeve, one end of the movable bolt is connected to one end of the first clamping plate and the second clamping plate by hot melting, both side ends of the PET protective film are connected to a force-bearing sheet film, and a pulling sheet is installed at the lower end of the blue release film.

[0009] Preferably, the upper ends of the first clamping plate and the second clamping plate are mounted on a connecting plate, a fixing bolt penetrates the connecting plate, and a threaded sleeve is installed inside one end of the base frame.

[0010] Preferably, shear slits are opened on both side ends of the stress-bearing sheet film and the PET protective film, one end of the first clamping plate and the second clamping plate are connected and fixed to the film output frame by screws, and the first cutting blade and the second cutting blade are installed at both ends of the film output frame.

[0011] Preferably, the film discharging frame is provided with a film discharging notch, and one end of the PET protective film is connected with a pulling bar.

[0012] Preferably, the PET protective film is provided with a plurality of glue dispensing holes, and a glue application groove is provided at the lower end of the PET protective film.

[0013] Preferably, the lower end of the upper glue groove of the PET protective film corresponds to a lower glue groove, and the lower glue groove is opened at the upper end of the reflective sheet.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The utility model utilizes a light-shielding and focusing film separation component, and can more accurately control the bonding process of the reflective sheet and the PET protective film by rotating the movable bolt, closing the clamping plate, and manually tearing off the release film. In order to ensure that the reflective sheet and the PET protective film are free from bending, cracks, or wrinkles when being bonded, the utility model can effectively avoid accidental damage during the bonding process, thereby reducing the possibility of re-operation.

[0016] (2) The utility model uses a fixing bolt and a threaded sleeve, and tightens the fixing bolt to prevent the PET protective film or the reflective sheet from being twisted or displaced due to the loosening of the pressing plate when the blue release film is torn off. This helps to maintain the flatness of the film, and the operator can operate more easily, reducing the possibility of accidental damage.

[0017] (3) The utility model utilizes the film-discharging frame and the film-discharging notch, the cutting blades and the stress-bearing film to fully press the PET protective film onto the first pressing plate and the second pressing plate through the stress-bearing film, thereby expanding the range of the stress points, thereby keeping the PET protective film and the reflective sheet more stable when the light-shielding and focusing film and the blue release film are separated and torn apart. At the same time, when the PET protective film and the reflective sheet move out of the film-discharging notch of the film-discharging frame, the stress-bearing film is cut open by the first cutting blade and the second cutting blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of the light-shielding and light-focusing film structure of the optical keyboard provided by the utility model;

[0019] Figure 2 A schematic diagram of the PET protective film structure of the light-shielding and light-focusing film structure of the optical keyboard provided by the utility model;

[0020] Figure 3 A schematic diagram of a blue release film and a pulling sheet structure of a light-shielding and light-focusing film structure of an optical keyboard provided by the utility model;

[0021] Figure 4 A schematic diagram of the structure of the light-shielding and light-focusing film separation component of the light-shielding and light-focusing film structure of the optical keyboard provided by the utility model;

[0022] Figure 5 A schematic diagram of a film frame structure of a light-shielding and light-focusing film structure of an optical keyboard provided by the utility model;

[0023] Among them, the names corresponding to the figure marks are: 100, keyboard focusing film mechanism; 101, PET protective film; 102, pulling strip; 103, glue dispensing hole; 104, force-bearing film; 105, shear gap; 106, reflective sheet; 107, lower glue groove; 108, blue release film; 109, pulling sheet; 110, upper glue groove; 200, light-shielding focusing film separation component; 201, first clamping plate; 202, second clamping plate; 203, bottom frame; 204, film outlet frame; 205, film outlet notch; 206, hinged sleeve; 207, movable bolt; 208, connecting plate; 209, fixing bolt; 210, threaded sleeve; 211, first cutting blade; 212, second cutting blade. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0025] First embodiment:

[0026] like Figure 1-4 As shown, the light-shielding and light-focusing film structure of the optical keyboard provided by the utility model comprises: a keyboard light-focusing film mechanism 100 and a light-shielding and light-focusing film separation component 200. The keyboard light-focusing film mechanism 100 comprises a PET protective film 101, a reflective sheet 106, and a blue release film 108. The PET protective film 101 is a thin film made of polyethylene terephthalate through special processing, which is mainly used to reduce surface scratches, prevent stains from adhering, and avoid ultraviolet radiation. The reflective sheet 106 is a kind of film designed for notebook computer keyboards. The back side of the transparent sheet in the keyboard can generate reflection, thereby enhancing the backlight effect of the keyboard. The PET protective film 101 and the reflective sheet 106 are connected and fixed together by glue. The lower end of the reflective sheet 106 is connected and fixed to the blue release film 108 by separating the colloid. The keyboard focusing film mechanism 100 is placed on the upper end of the bottom frame 203. The upper end of the bottom frame 203 is in contact with the blue release film 108. The middle end of the bottom frame 203 is provided with a through rectangular structure. One end of the bottom frame 203 is connected and fixed to the hinge sleeve 206 by hot melting. The interior of the joint sleeve 206 is penetrated by a movable bolt 207, one end of which is connected to the first clamping plate 201 and one end of the second clamping plate 202 by hot melting, and the two sides of the PET protective film 101 are connected to the stress-bearing film 104, and the lower end of the blue release film 108 is installed with a pulling sheet 109. In actual use, when the user needs to stick a focusing film on the keyboard circuit board, the user places the shading focusing film on the bottom frame 203, and further rotates the movable bolt 207, and moves inside the hinge sleeve 206. The first pressing plate 201 and the second pressing plate 202 can be rotated and closed, and the first pressing plate 201 and the second pressing plate 202 are pressed against both sides of the upper end of the PET protective film 101. After that, the user manually holds the pulling piece 109 of the blue release film 108, and further separates and tears the blue release film 108 from one end of the reflective film 106 through the pulling piece 109, and can prevent the reflective film 106 and the PET protective film 101 from bending, causing cracks or wrinkles.

[0027] In this embodiment, by utilizing the light-shielding and focusing film separation assembly 200, by rotating the movable bolt 207, closing the clamping plate, and manually tearing off the release film, the bonding process of the reflective sheet 106 and the PET protective film 101 can be more accurately controlled. In order to ensure that when the reflective sheet 106 and the PET protective film 101 are bonded, bending, cracks, or wrinkles of the reflective sheet 106 and the PET protective film 101 can be avoided, accidental damage during the film bonding process can be effectively avoided, thereby reducing the possibility of re-operation.

[0028] Second embodiment:

[0029] like Figure 2 , Figure 4-5 As shown, the upper ends of the first clamping plate 201 and the second clamping plate 202 are installed on the connecting plate 208, and the connecting plate 208 is penetrated by a fixing bolt 209. A threaded sleeve 210 is installed inside one end of the base frame 203. In actual use, when the first clamping plate 201 and the second clamping plate 202 are closed with the base frame 203, the fixing bolt 209 is tightened inside the threaded sleeve 210, so that the first clamping plate 201 and the second clamping plate 202 can be tightened and fixed. When the light-shielding and focusing film separates and tears the blue release film 108, the first clamping plate 201 and the second clamping plate 202 can be prevented from loosening.

[0030] In this embodiment, by using the fixing bolt 209 and the threaded sleeve 210, by tightening the fixing bolt 209, it is possible to avoid unnecessary distortion or displacement of the PET protective film 101 or the reflective sheet 106 due to the looseness of the pressing plate when tearing off the blue release film 108. This helps to maintain the flatness of the film, and the operator can operate more easily, reducing the possibility of accidental damage.

[0031] Third embodiment:

[0032] As 2, Figure 4-5 As shown, shear slits 105 are provided on both side ends of the stress-bearing film 104 and the PET protective film 101, and the first clamping plate 201 and one end of the second clamping plate 202 are connected and fixed to the film outlet frame 204 by screws, and the first cutting blade 211 and the second cutting blade 212 are installed at both ends of the film outlet frame 204. The stress-bearing film 104 can fully clamp the PET protective film 101 on the first clamping plate 201 and the second clamping plate 202, and the range of the stress points is expanded. When the light-shielding and focusing film and the blue release film 108 are separated and torn, the PET protective film 101 and the reflective film 106 can be kept more stable. When the PET protective film 101 and the reflective film 106 move out of the film outlet slot 205 of the film outlet frame 204, the stress-bearing film 104 can be cut by the first cutting blade 211 and the second cutting blade 212.

[0033] In this embodiment, by using the film-discharging frame 204 and the film-discharging notch 205, the cutting blades and the stress-bearing film 104, the PET protective film 101 is fully pressed against the first pressing plate 201 and the second pressing plate 202 through the stress-bearing film 104, so that the range of the stress-bearing point can be expanded, so that when the light-shielding and focusing film and the blue release film 108 are separated and torn, the PET protective film 101 and the reflective sheet 106 are kept more stable. At the same time, when the PET protective film 101 and the reflective sheet 106 move out of the film-discharging notch 205 of the film-discharging frame 204, the stress-bearing film 104 is cut open by the first cutting blade 211 and the second cutting blade 212.

[0034] Fourth embodiment:

[0035] like Figure 1 , Figure 4 As shown, the film discharging frame 204 is provided with a film discharging notch 205 , and one end of the PET protective film 101 is connected to a pulling bar 102 . The user manually pulls the pulling bar 102 to move the PET protective film 101 and the reflective sheet 106 out of the film discharging frame 204 .

[0036] Fifth embodiment:

[0037] like Figure 2 , Figure 3 As shown, the PET protective film 101 is provided with a plurality of glue dispensing holes 103, and an upper glue groove 110 is provided at the lower end of the PET protective film 101. The lower end of the upper glue groove 110 of the PET protective film 101 corresponds to a lower glue groove 107, and the lower glue groove 107 is provided at the upper end of the reflective sheet 106. The glue liquid flows into the upper glue groove 110 and the lower glue groove 107 through the glue dispensing holes 103, and the PET protective film 101 is connected to the reflective sheet 106 together.

[0038] When in use, first, when the user needs to stick a focusing film on the keyboard circuit board, the user places the shading focusing film on the bottom frame 203, and further rotates the movable bolt 207 and rotates it inside the hinge sleeve 206, so that the first clamping plate 201 and the second clamping plate 202 can be rotated and closed, and the first clamping plate 201 and the second clamping plate 202 are pressed against both sides of the upper end of the PET protective film 101. After that, the user manually holds the pulling piece 109 of the blue release film 108, and further pulls the pulling piece 109 to The blue release film 108 is separated and torn off from one end of the reflective sheet 106. When the first clamping plate 201 and the second clamping plate 202 are closed with the base frame 203, the first clamping plate 201 and the second clamping plate 202 can be tightened and fixed by tightening the fixing bolt 209 inside the threaded sleeve 210. Then, when the PET protective film 101 and the reflective sheet 106 are moved out of the film outlet slot 205 of the film outlet frame 204, the stress-bearing film 104 can be cut open by the first cutting blade 211 and the second cutting blade 212.

[0039] The above embodiment is only one of the preferred implementation modes of the present utility model and should not be used to limit the protection scope of the present utility model. Any changes or modifications that are made to the main design concept and spirit of the present utility model without any substantive significance, as long as the technical problems solved are still consistent with the present utility model, should be included in the protection scope of the present utility model.

Claims

1. A light-shielding and light-focusing film structure for an optical keyboard, characterized in that: include: A keyboard light-gathering film mechanism (100) and a light-shielding light-gathering film separation component (200), wherein the keyboard light-gathering film mechanism (100) comprises a PET protective film (101), a reflective sheet (106), and a blue release film (108), wherein the PET protective film (101) and the reflective sheet (106) are bonded and fixed together by glue, and the lower end of the reflective sheet (106) is connected and fixed to the blue release film (108) by a separation colloid, and the keyboard light-gathering film mechanism (100) is placed on the upper end of a bottom frame (203), and the upper end of the bottom frame (203) contacts with a A blue release film (108) is provided at the middle end of the base frame (203) with a through rectangular structure. One end of the base frame (203) is connected and fixed to a hinge sleeve (206) by hot melting. A movable bolt (207) is connected to the inside of the hinge sleeve (206). One end of the movable bolt (207) is connected to one end of the first clamping plate (201) and the second clamping plate (202) by hot melting. Both side ends of the PET protective film (101) are connected to a stress-bearing sheet film (104). A pulling sheet (109) is installed at the lower end of the blue release film (108).

2. The light-shielding and light-focusing film structure of an optical keyboard according to claim 1, characterized in that: The upper ends of the first clamping plate (201) and the second clamping plate (202) are mounted on a connecting plate (208), a fixing bolt (209) passes through the connecting plate (208), and a threaded sleeve (210) is installed inside one end of the base frame (203).

3. The light-shielding and light-focusing film structure of an optical keyboard according to claim 1, characterized in that: The two side ends of the stress-bearing sheet film (104) and the PET protective film (101) are provided with shear slit openings (105); one end of the first clamping plate (201) and the second clamping plate (202) are connected and fixed to the film discharging frame (204) by screws; and the first cutting blade (211) and the second cutting blade (212) are installed at both ends of the film discharging frame (204).

4. The light-shielding and light-focusing film structure of an optical keyboard according to claim 3, characterized in that: The film discharging frame (204) is provided with a film discharging notch (205), and one end of the PET protective film (101) is connected to a pulling strip (102).

5. The light-shielding and light-focusing film structure of an optical keyboard according to claim 1, characterized in that: The PET protective film (101) is provided with a plurality of glue dispensing holes (103), and a glue application groove (110) is provided at the lower end of the PET protective film (101).

6. The light-shielding and light-focusing film structure of an optical keyboard according to claim 5, characterized in that: The lower end of the upper glue groove (110) of the PET protective film (101) corresponds to a lower glue groove (107), and the lower glue groove (107) is opened at the upper end of the reflective sheet (106).

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