SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem of poor waterproof effect of a fingerprint key in the prior art, and provides a fingerprint key assembly which has a good waterproof effect.
In order to achieve the above object, the present invention provides a fingerprint key assembly, including a decorative plate, a silica gel waterproof plate and a fingerprint key portion, where the fingerprint key portion includes a back plate and keys arranged on an outer surface of the back plate, the silica gel waterproof plate is provided with a first mounting hole for accommodating the back plate, a bottom surface of the decorative plate is attached to the outer surface of the silica gel waterproof plate and located at the first mounting hole, the decorative plate is provided with a second mounting hole for accommodating the keys, and a sealing adhesive layer is arranged between the outer surface of the back plate and the outer surface of the silica gel waterproof plate and the bottom surface of the decorative plate.
Optionally, a sealant is arranged at a seam between the inner surface of the back plate and the inner surface of the silica gel waterproof plate.
Optionally, be equipped with the elastic washer in the periphery of silica gel waterproof board, the decorative board sets up the inside of elastic washer.
Optionally, the fingerprint key part further comprises a flexible circuit board bonded to the back of the back plate, and the flexible circuit board is provided with a fingerprint key chip and a key dome.
Another aspect of the present invention provides an electronic device, including any one of the above fingerprint key assemblies, a housing plate with a mounting opening, and a waterproof cover plate, where the fingerprint key assembly is disposed on a back surface of the housing plate and extends into the mounting opening, and the waterproof cover plate is attached to the fingerprint key assembly and connected to the back surface of the housing plate through screws.
Optionally, the inner wall of the mounting opening of the shell plate is in interference fit with the outer peripheral surface of the boss on the decorative plate.
Optionally, a wiring port is arranged on the waterproof cover plate.
Optionally, the back surface of the waterproof cover plate is bonded to the internal structure of the electronic device by a sealant.
Optionally, the electronic device is AR glasses.
Through above-mentioned technical scheme, this fingerprint button subassembly adopts the waterproof structural design of synthesizing of fingerprint and button, and structural design is simple reliable, and compatible three function saves the button space simultaneously.
Drawings
FIG. 1 is an exploded view of one embodiment of a fingerprint key assembly of the present invention;
FIG. 2 is a schematic diagram of one embodiment of a fingerprint key assembly of the present invention;
FIG. 3 is a schematic cross-sectional view of one embodiment of a fingerprint key assembly of the present invention;
FIG. 4 is a schematic diagram of the bonding of an embodiment of a fingerprint key assembly of the present invention;
FIG. 5 is an exploded view of one embodiment of an electronic device in accordance with the present invention;
FIG. 6 is a schematic cross-sectional view of one embodiment of an electronic device in the present invention;
FIG. 7 is a schematic diagram of bonding of an embodiment of an electronic device in accordance with the present invention.
Description of the reference numerals
1-decorative board, 2-silica gel waterproof board, 3-fingerprint key part, 4-fingerprint key chip, 5-key elastic sheet, 6-flexible circuit board, 7-screw, 8-waterproof cover board, 9-shell board, 10-key, 11-back board and 12-boss.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The utility model provides a fingerprint key assembly which comprises a decorative plate 1, a silica gel waterproof plate 2 and a fingerprint key part 3, wherein the fingerprint key part 3 comprises a back plate 11 and keys 10 arranged on the outer surface of the back plate, the silica gel waterproof plate 2 is provided with a first mounting hole for accommodating the back plate 11, the bottom surface of the decorative plate 1 is attached to the outer surface of the silica gel waterproof plate 2 and is positioned at the first mounting hole, the decorative plate 1 is provided with a second mounting hole for accommodating the keys 10, and a sealing adhesive layer is arranged between the outer surface of the back plate 11 and the outer surface of the silica gel waterproof plate 2 as well as the bottom surface of the decorative plate 1.
When the decorative plate 1, the silica gel waterproof plate 2 and the fingerprint key part 3 are spliced together, the key 10 can be a key which can be pressed up and down or a fixed touch key, and as an implementation mode, the key 10 can be bounced up and down; 11 outer peripheral faces of backplate in the fingerprint button portion 3 and the first mounting hole inner wall interference fit of silica gel waterproof board 2, because silica gel waterproof board 2 is the elastic component, consequently first mounting hole and 11 interference fit of backplate can furthest reduce the water inflow, wherein the surface of backplate 11 and the surface parallel and level of silica gel waterproof board 2, surface and the bottom surface of decorative board 1 at the surface of backplate 11 and silica gel waterproof piece 2 are equipped with the sealant layer, as shown in figure 3, bond decorative board 1, silica gel waterproof board 2 and fingerprint button portion 3 together through this sealant layer, form first waterproof technology A simultaneously, under first waterproof technology A's effect, can effectually prevent the water flow inside the equipment from the outside inflow, thereby cause the short circuit to the circuit of equipment, form the trouble.
Further, a sealant is arranged at the joint between the inner surface of the back plate 11 and the inner surface of the silica gel waterproof plate 2. Wherein the outer peripheral face of backplate 11 and the interior wall laminating of first mounting hole of silica gel waterproof board 2 bond together through sealed glue with the seam crossing of the internal surface of backplate 11 and the internal surface of silica gel waterproof board 2, form waterproof technology B of second, under waterproof technology B's of second effect, even first waterproof technology A became invalid, also can effectually prevent the rivers that flow in from the outside to inside the equipment, further increased waterproof effect. As an alternative embodiment, the thickness of the silicone rubber flashing 2 is the same as the thickness of the back plate 11, and when the outer surface of the back plate 11 is flush with the outer surface of the silicone rubber flashing 2, then the inner surface of the back plate 11 is also flush with the inner surface of the silicone rubber flashing 2.
Further, be equipped with the elastic washer on the periphery of silica gel waterproof board 2, decorative board 1 sets up the inside at the elastic washer.
As an embodiment, the silicone waterproof board 2 is integrally formed with the elastic gasket, in order to avoid the interference problem, the outer peripheral surface of the decorative board 1 is inside the elastic gasket, and the thickness of the elastic gasket is greater than that of the silicone waterproof board 2, so when the silicone waterproof board 2 is installed inside the equipment, the elastic gasket with the greater thickness realizes the sealing effect through up-and-down extrusion.
Wherein, the front surface of the decorative plate 1 is provided with a boss 12 surrounding the second mounting hole. When the key 10 is installed and bonded with the decorative plate 1, the key 10 protrudes relative to the outer surface of the decorative plate 1, so that a boss 12 is arranged at a position surrounding a second installation hole on the decorative plate 1 in order to press the key 10 and protect the protruding part of the key 10; for the user experience and the aesthetic appearance, when the decorative plate 1 is adhered to the key 10, the outer surface of the decorative plate 1 is flush with the outer surface of the key 10, as an embodiment, the thickness of the decorative plate 1 is equal to the thickness of the key 10, and when the inner surface of the decorative plate 1 is adhered to the outer surface of the back plate 11, the outer surface of the decorative plate 1 is flush with the outer surface of the key 10.
Further, the fingerprint key part 3 further comprises a flexible circuit board 6 bonded on the back of the back plate, and a fingerprint key chip 4 and a key elastic sheet 5 are arranged on the flexible circuit board 6.
Flexible circuit board 6 is the common circuit board in the electronic equipment, this kind of circuit can be crooked at will, folding, light in weight, small, good heat dissipation, high durability and convenient installation, reach fingerprint identification's purpose through setting up fingerprint button chip 4, communicate button 10 and flexible circuit board 6 through button shell fragment 5, button shell fragment 5 sets up the center department at button 10 internal surface, when pressing button 10, the central point of button shell fragment 5 is recessed, contact the circuit on the flexible circuit board 6, thereby form the return circuit, the electric current passes through, whole product just can normally be worked.
The utility model also provides electronic equipment which comprises any one of the fingerprint key assemblies, a shell plate 9 with an installation opening and a waterproof cover plate 8, wherein the fingerprint key assembly is arranged on the back surface of the shell plate 9 and extends into the installation opening, and the waterproof cover plate 8 is attached to the fingerprint key assembly and is connected to the back surface of the shell plate 9 through a screw 7.
Be equipped with on the casing board 9 and supply the fixed installing port of fingerprint key subassembly, as an embodiment, boss 12 on the decoration 1 stretches into in the installing port of casing board 9, and the surface of boss 12 and the surface parallel and level of casing board 9, so both pleasing to the eye use that can increase the user is experienced again, then press the fingerprint key subassembly on casing board 9 through waterproof apron 8, rethread screw 7 fixes waterproof apron 8 on casing board 9, therefore, the installing port through casing board 9 has carried out fingerprint key subassembly horizontal spacing, rethread waterproof apron 8's extrusion has carried out vertical spacing, thereby it is fixed with the fingerprint key subassembly.
Wherein, the internal surface of casing board 9 and the surface of waterproof apron 8 are laminated respectively to the elastic washer both sides on the silica gel waterproof 2 to the distance between the internal surface of casing board 9 and the surface of waterproof apron 8 is less than elastic washer's thickness, just so can guarantee that elastic washer receives the extrusion, thereby can effectively avoid the rivers that flow into inside the equipment from the gap of decoration 1 and casing board 9, realize sealed effect.
Further, the inner wall of the mounting opening of the shell plate 9 is in interference fit with the outer peripheral surface of the boss 12 on the decorative plate 1. By reducing the gap between the boss 12 and the mounting port, inflow of outside water from the gap between the garnish 1 and the housing panel 9 can be effectively prevented.
Wherein, the waterproof cover plate 8 is provided with a wiring port. The wiring port on the waterproof cover plate 8 can be passed through by the flexible circuit board 6, so that the fingerprint key assembly is connected with a circuit inside the device.
Further, the back surface of the waterproof cover plate 8 is joined to the internal structure of the electronic apparatus by a sealant.
The internal structure of the electronic equipment is a shell with an opening in the middle, as an implementation mode, the adhesion of the waterproof cover plate 8 and the shell is divided into two parts, the first part is that the inner surface of the waterproof cover plate 8 and the surface of the shell which is attached to each other are adhered together through sealant, so that the integral fixation can be realized, and the water which flows in from the outside can be effectively prevented from flowing into the equipment; the second part is for carrying out some glue waterproof along the inner wall of casing open-ended to further increase the water-proof effects between waterproof apron 8 and the inner structure of electronic equipment, thereby cause the short circuit to the circuit of equipment, form the trouble.
Further, the electronic device is an AR glasses.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various simple modifications can be made to the technical solution of the present invention within the technical concept of the present invention, including combinations of specific technical features in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations of the present invention will not be further described, but such simple modifications and combinations should be considered as the disclosure of the present invention, and all fall within the scope of the present invention.