[ Invention ]
The invention provides a mounting structure of a fingerprint identification module and electronic equipment, which can solve the problem of fingerprint positioning and is convenient to assemble.
The invention provides a mounting structure of a fingerprint identification module, which comprises a shell, the fingerprint identification module and a combination key, wherein a mounting groove for assembling the combination key is formed in one side of the shell, the fingerprint identification module comprises a module main body and a first flexible circuit board electrically connected with the module main body, the combination key comprises a key main body and a second flexible circuit board electrically connected with the key main body, the first flexible circuit board and the second flexible circuit board are arranged in the shell, the key main body comprises a supporting part, a first key and a second key which are arranged on two sides of the supporting part, the supporting part is inwards sunken to form a groove, the module main body is fixed in the groove and penetrates through the supporting part to be connected with the first flexible circuit board, and one side of the first key and one side of the second key penetrate through the mounting groove to be connected with the second flexible circuit board.
In a preferred embodiment, one side of the first key and one side of the second key respectively extend to form an extension portion, two sides of the mounting groove extend to form a limiting table corresponding to the extension portion in the mounting groove, a through hole allowing the extension portion to pass through is formed in the limiting table, the supporting portion abuts against one side of the mounting groove, the supporting portion and the limiting table are arranged at intervals and form a cavity allowing the connection portion of the first key and the supporting portion and the connection portion of the second key and the supporting portion to be elastically deformed, and the first key and the second key can be elastically deformed.
In a preferred embodiment, a receiving groove communicated with the mounting groove is formed in one side, close to the mounting groove, of the shell, the second flexible circuit board is fixed in the receiving groove, each extending part is fixed with a conductive base, and a switch capable of elastically contacting with the conductive base is arranged on the second flexible circuit board at intervals.
In a preferred embodiment, the device further comprises a clamping piece arranged in the accommodating groove and used for limiting the combined key, one side of the supporting portion extends into the accommodating groove to form a plurality of hanging lugs, the clamping piece is provided with a connecting hole through which the extending portion and the hanging lugs penetrate, the clamping piece comprises a first abutting surface close to the mounting groove and a second abutting surface opposite to the first abutting surface, the first abutting surface is attached to the inner wall of the accommodating groove, and the second abutting surface is in limit fit with the hanging lugs.
In a preferred embodiment, the hanging lug comprises a limiting end parallel to the second abutting surface, and the second abutting surface protrudes into the accommodating groove to form a convex hull abutting against the limiting end.
In a preferred embodiment, the module body comprises a fingerprint chip and a reinforcing steel sheet for fixing the fingerprint chip, and the reinforcing steel sheet is adhered in the groove through an adhesive layer.
In a preferred embodiment, a connection portion between the first key and the supporting portion and a connection portion between the second key and the supporting portion are arc-shaped on a side facing away from the cavity.
In a preferred embodiment, the portable electronic device further comprises an independent key, a fixing groove is formed in one side of the shell and is spaced from the mounting groove, and the independent key is assembled in the fixing groove and is electrically connected with the second flexible circuit board.
In a preferred embodiment, the first key and the second key are both volume keys, and the independent key is a power key.
In order to solve the problems, the invention also provides electronic equipment, which comprises the mounting structure of the fingerprint identification module.
Compared with the prior art, the electronic device has the beneficial effects that the module main body is integrated with the conventional keys and fixedly arranged, so that the problem that the fingerprint module is not beneficial to fingerprint positioning when being arranged on the side surface of the electronic device is solved, the electronic device is simple in assembly structure, saves space, can ensure that the front screen of the electronic device has high occupation ratio and attractive back surface, and has high practicability.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
[ Detailed description ] of the invention
In order to make the objects, technical solutions and advantageous technical effects of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is intended to illustrate the invention, and not to limit the invention.
Referring to fig. 1 to 5, an embodiment of the present invention provides a mounting structure of a fingerprint recognition module, which specifically includes a housing 10, a fingerprint recognition module 20, and a combination key 30. One side of the housing 10 is provided with a mounting groove 11 for assembling the combination key 30. The fingerprint identification module 20 comprises a module body 21 and a first flexible circuit board 22 electrically connected with the module body 21, the combined key 30 comprises a key body 31 and a second flexible circuit board 32 electrically connected with the key body 31, and the first flexible circuit board 22 and the second flexible circuit board 32 are arranged in the shell 10. The key body 31 includes a supporting portion 311, a first key 312 and a second key 313 disposed on two sides of the supporting portion 311, the supporting portion 311 is recessed inward to form a groove 3111, the module body 21 is fixed in the groove 3111 and connected to the first flexible circuit board 22 through the supporting portion 311, and one sides of the first key 312 and the second key 313 are connected to the second flexible circuit board 32 through the mounting slot 11. In this embodiment, the module body 21 is fixed between the first key 312 and the second key 313, which saves space, and when the module body 21 is operated, the module body 21 is fixed and does not move along with the movement of the first key 312 or the second key 313, thereby facilitating the fingerprint positioning to realize the fingerprint identification function.
Preferably, one sides of the first key 312 and the second key 313 extend to form an extension part 314 respectively, two sides of the mounting groove 11 extend into the mounting groove 11 to form a limiting table 111 corresponding to the extension part 314, a through hole 1111 through which the extension part 314 can pass is formed in the limiting table 111, the supporting part 311 abuts against one side of the mounting groove 11, the supporting part 311 and the limiting table 111 are arranged at intervals to form a cavity 112 for elastic deformation at the connection part of the first key 312 and the supporting part 311 and the connection part of the second key 313 and the supporting part 311, the first key 312 and the second key 313 can generate elastic deformation, so that a user can realize key feel through the elastic deformation when pressing the first key 312 or the second key 313, and the fixing structure of the module main body 21 is not influenced.
Specifically, a receiving slot 12 communicating with the mounting slot 11 is formed in the housing 10 at a side close to the mounting slot 11, the second flexible circuit board 32 is fixed in the receiving slot 12, a conductive base 315 is fixed on each extension portion 314, and a switch 321 in elastic contact with the conductive base 315 in a one-to-one correspondence is arranged on the second flexible circuit board 32, so as to realize a key function. In this embodiment, the conductive base 315 is a 90-degree silica gel, which has a high hardness and is beneficial to reducing pressing abrasion, the switch 321 is a tact switch or a dome, when the first key 312 or the second key 313 is pressed, the conductive base 315 moves to and contacts with the corresponding switch 321 with elastic contact, and when the first key 312 or the second key 313 is pressed by the conductive base 315, the internal contact conduction of the switch 321 is realized, and the circuit contacting the second flexible circuit board 32 is formed, thereby forming a loop and completing electrical connection.
Further, the mounting structure of the fingerprint recognition module further includes a clamping member 40 disposed in the accommodating groove 12 and used for limiting the combination key 30. One side of the supporting part 31 extends into the accommodating groove 12 to form a plurality of hanging lugs 316, the clamping piece 40 is provided with a connecting hole 41 through which the extending part 314 and the hanging lugs 316 can pass, the clamping piece 40 comprises a first abutting surface 42 close to the mounting groove 11 and a second abutting surface 43 opposite to the first abutting surface 42, the first abutting surface 42 is attached to the inner wall of the accommodating groove 12, and the second abutting surface 43 is matched with the hanging lugs 316 to limit, so that the supporting part 31 is positioned, the key main body 31 is prevented from falling off, and in a specific implementation process, the structure of the hanging lugs 316 is determined according to a specific electronic equipment structure.
In one embodiment, the support portion 311 is provided with a slot 3112 communicating with the recess 3111, and the module body 21 is connected to the first flexible circuit board 22 through the slot 3112. It should be noted that, the positioning member 40 is provided with an assembling groove 44 corresponding to the slot 3112, so as to facilitate the first flexible circuit board 22 passing through during assembling. In other embodiments, the supporting portion 311 may be provided with a through hole through which the module body 21 passes, or the supporting portion 311 may be reduced in size and pass out from one side of the edge.
In one embodiment, the cross section of the hanging ring 316 is in an "L" shape and includes a limiting end 3151 parallel to the second abutting surface 43, and the second abutting surface 43 protrudes into the accommodating groove 12 to form a convex hull 431 abutting against the limiting end 3151, which is simple in structure and convenient for the assembling and positioning of the clamping member 40 after the assembling key 30 is installed. Further, the clamping piece 40 is flat, occupies a small space, and the edge of the clamping piece 40 is bent and extends to the second flexible circuit board 32 to form an extension piece 45, so that the clamping piece is convenient to take during assembly.
Preferably, the module main body 21 includes a fingerprint chip 211 and a reinforcing steel sheet 212 for fixing the fingerprint chip 211, the reinforcing steel sheet 212 is adhered in the groove 3111 through an adhesive layer 213, the surface dyne value is greater than 32, the module is favorable to be fixed, the assembly of the integral structure is convenient, the structure of the reinforcing steel sheet 212 is not limited here, and the adhesive layer 213 is realized through a back adhesive or dispensing process. It will be appreciated that the fingerprint chip 211 is encapsulated in a protective cover plate, the protective cover plate may be made of sapphire, coated ceramic or glass, the fingerprint chip 211 is used for collecting fingerprint images of a user's finger and extracting fingerprint features when the user's finger presses the protective cover plate, and the fingerprint images are transmitted to a main board of the electronic device for processing through the first flexible circuit board 22 to realize functions thereof.
Preferably, the connection between the first key 312 and the supporting portion 311 and the connection between the second key 313 and the supporting portion 311 are arc-shaped, which is beneficial to better pressing feeling when operated by the user.
Referring to fig. 1 and 3, in one embodiment, the mounting structure of the fingerprint recognition module further includes an independent key 50, a fixing slot 13 spaced from the mounting slot 11 is formed on one side of the housing 10, the independent key 50 is assembled in the fixing slot 13 and electrically connected to the second flexible circuit board 32, and the structure is compact, is consistent with the structure space of the conventional key, does not need additional structural space, and is convenient for processing. In one embodiment, the first key 312 and the second key 313 are both volume keys, i.e. volume up key or volume down key, and the independent key 50 is a power key, which accords with the usage habit of the user. In this embodiment, the independent keys 50 and the key main body 31 are disposed at the same side of the housing 10 at intervals, and in other embodiments, may be disposed at two opposite sides.
Further, the embodiment of the invention also provides electronic equipment, which comprises the installation structure of the fingerprint identification module in the embodiment. Specifically, the electronic device may be a product or a component such as a mobile phone, a tablet computer, a notebook computer, a television, and the like. In one embodiment, the electronic device is a mobile phone, the housing 10 is specifically a middle frame structure of the mobile phone, and the module main body 21 is disposed on a side (frame) of the mobile phone, which has a periphery of a display screen.
The assembly process of the embodiment of the invention comprises the steps of firstly fixing the second flexible circuit board 32 in the accommodating groove 12, secondly assembling the combined key 30 in place in the mounting groove 11, then assembling the clamping piece 40 in the accommodating groove 12 to position the combined key 30, and finally assembling the fingerprint identification module 20.
It is noted that reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The foregoing is merely a preferred embodiment of the invention, which has been described in further detail in connection with specific preferred embodiments thereof, and it is not intended that the invention be limited to these embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.