CN208255903U - Fingerprint identification device and mobile terminal containing it - Google Patents

Abstract

The utility model discloses a kind of fingerprint identification device and containing its mobile terminal, fingerprint identification device includes the fixed bracket of shell, pcb board, fingerprint recognition mould group and fingerprint, the pcb board is fixed on the shell, the fixed bracket of the fingerprint is placed in the pcb board, the fingerprint recognition mould group is fixed on the fixed bracket of the fingerprint, the fixed bracket of the fingerprint includes: rack body, and the fingerprint recognition mould group is fixed on the rack body；The shell is fixed in extension, the region that the extension is located at outside on the outside of the pcb board outside the outside that the outer edge of the rack body extends to the pcb board, in the extension.The utility model, which is not necessarily to the aperture on pcb board, can be realized the fixation of fingerprint recognition mould group and shell, to improve the space utilization rate of pcb board.

Description

Fingerprint identification device and mobile terminal containing it

Technical field

The utility model relates to field of electronic device, in particular to a kind of fingerprint identification device and the mobile terminal containing it.

Background technique

In recent years, with the development of memory technology, mobile terminal such as smart phone, tablet computer etc. is stored with a large amount of individuals The capsule information such as information, safety become even more important.In this way, seem increasingly important for user identification confirmation, and it is common Identification waterproof have fingerprint recognition, recognition of face etc..

Fingerprint is made of the rough lines of finger surface skin, is the unique feature of human body, complicated journey Enough features that user identifies identity can be improved in degree, in this way, fingerprint recognition is both to utilize the specific of fingerprint uniqueness and stability It realizes identification, remembers without user.

Referring to Fig. 1, traditional 1 ' of fingerprint identification device generally includes shell (not shown), 2 ' of pcb board, fingerprint recognition 3 ' of mould group and fingerprint fixed 4 ' of bracket, 2 ' of pcb board are fixed on shell, and 3 ' of fingerprint recognition mould group is fixed on fixed 4 ' of bracket of fingerprint, Fixed 4 ' of bracket of fingerprint is integrally located at the back side (even if the used time is away from one side of user) of 2 ' of pcb board, and fixed 4 ' of bracket of fingerprint is set There are 5 ' of positioning column, 2 ' of pcb board to be equipped with location hole, 5 ' of positioning column is arranged in 6 ' of location hole, so that fixed 4 ' of bracket of fingerprint is fixed In 2 ' of pcb board.

However, form has the following deficiencies: that location hole is arranged on pcb board realizes the fixed bracket of fingerprint using the above structure Fixation, that is, need on pcb board aperture to realize the fixation of fingerprint recognition mould group so that the space utilization rate of pcb board compared with It is low.

Utility model content

The technical problems to be solved in the utility model is to overcome PCB in fingerprint identification device traditional in the prior art The lower defect of the space utilization rate of plate provides a kind of fingerprint identification device and the mobile terminal containing it.

The utility model is to solve above-mentioned technical problem by following technical proposals:

A kind of fingerprint identification device comprising the fixed bracket of shell, pcb board, fingerprint recognition mould group and fingerprint, the PCB Plate is fixed on the shell, and the fixed bracket of the fingerprint is placed in the pcb board, and the fingerprint recognition mould group is fixed on the finger Line fixes bracket, and the fixed bracket of the fingerprint includes:

Rack body, the fingerprint recognition mould group are fixed on the rack body；

Extension, the extension are described to prolong outside the outside that the outer edge of the rack body extends to the pcb board The shell is fixed in the region being located at outside on the outside of the pcb board in extending portion.

In the present solution, the fixed bracket of fingerprint is arranged to include rack body and extension, the fixed fingerprint of rack body Identify mould group, shell is fixed in the region being located at outside on the outside of pcb board in extension, in this way it is not necessary that aperture can be real on pcb board The fixation of existing fingerprint recognition mould group and shell, to improve the space utilization rate of pcb board.

In addition, fingerprint recognition mould group is fixed on rack body, extension is fixed on shell, only two reorientations, compared to biography In the fingerprint identification device of system by the way of three reorientations, accumulated tolerance reduces, to improve fingerprint recognition mould group phase For the positioning accuracy of shell.

Optionally, the extending part is removably connected to the shell in the region outside the pcb board outside.This sample prescription Just the fixed bracket of fingerprint and the whole dismounting relative to shell of fingerprint recognition mould group.

Optionally, the extending part in the region outside the pcb board outside and is equipped with location structure between the shell.

In the present solution, location structure not only improves positioning accurate convenient for first positioning before extension is fixed on shell Degree, and the set-up time can be saved.

Optionally, the location structure includes positioning rod structure and buckle structure, the positioning rod structure and the buckle Structure is arranged at the direction interval vertical with the thickness direction of the shell.

It is arranged in the present solution, positioning rod structure and buckle structure at the direction interval vertical with the thickness direction of shell, Positioning accuracy of the fixed bracket of fingerprint relative to shell can not only be improved, and compact-sized.

Optionally, the positioning rod structure includes positioning column and positioning hole, and the positioning column is arranged in the location hole, institute It states positioning column and is set to the shell, the location hole is set to the extension, alternatively, the positioning column is set to described prolong Extending portion, the location hole are set to the shell；

The buckle structure includes clamping part and card slot, and the clamping part is arranged in the card slot, the clamping part setting In the shell, the card slot is set to the extension, alternatively, the clamping part is set to the extension, the card slot It is set to the shell；

The shell has the two sidewalls being oppositely arranged, and two side walls are respectively positioned on the length direction of the shell, institute It states positioning rod structure and the buckle structure is located between the two sidewalls of the shell and the extension.

In the present solution, positioning rod structure and buckle structure are located between the two sidewalls of shell and extension, in this way The positioning accuracy and reliability of positioning between shell and extension can be further increased.

Optionally, the extension includes the first extension and the second extension, first extension and the Two extensions extend out to outside the outside of the pcb board from the both sides of the rack body being oppositely arranged respectively, described The shell is fixed in first extension, and the positioning column structure setting in first extension and the shell it Between, the shell is fixed in second extension, and the buckle structure be set to second extension with it is described Between shell.

In the present solution, the first extension and the second extension setting, it is opposite to can be improved the fixed bracket of fingerprint In the positioning accuracy of shell and stability, the reliability of fixation.

Optionally, first extension includes the first extension main body and the first extension table, and described first extends main body Outside the outside that the outer edge of the rack body extends out to the pcb board, first extension table is prolonged from described first The outer edge for stretching main body extends outwardly and is located at outside the outside of the pcb board, width of first extension table in the shell Direction is located at the described first outside for extending main body, and before the thickness direction of the shell is located at the first extension main body Side, the positioning column structure setting is between first extension table and the shell；

Second extension includes the second extension main body and the second extension table, and described second extends main body from the bracket sheet The outer edge of body extends out to outside the outside of the pcb board, the outside that second extension table extends main body from described second Edge extends outwardly and is located at outside the outside of the pcb board, and second extension table is located at described in the width direction of the shell Second extends the outside of main body, and is located at the described second front for extending main body, the buckle in the thickness direction of the shell Structure setting is between second extension table and the shell.

Optionally, the rack body includes ontology plastic portions and base metal part, the ontology plastic portions with The base metal part is integrally formed, and the fingerprint recognition mould group is fixed on the base metal part；

The extension includes extending plastic portions and extending metal part, and the extension plastic portions are moulded from the ontology The outer edge of glue part extends outwardly, and is integrally formed with the ontology plastic portions, and the extension metal part is from described The outer edge of body metal part extends outwardly, and is integrally formed with the base metal part；

The extension plastic portions and the extension metal part are integrally formed, and are located in the extension metal part described The shell is fixed in region outside on the outside of pcb board.

In the present solution, form using the above structure, can not only guarantee the support bracket fastened structural strength of fingerprint in this way, also The fixed bracket occupied space in molding of fingerprint can be reduced.

Optionally, the fingerprint recognition mould group includes:

Fingerprint sensor；

Flexible circuit board, the flexible circuit board are fixedly connected with the fingerprint sensor, and along the thickness with the shell The fingerprint sensor is extended in the vertical direction in direction, and the flexible circuit board has the first connecting pin and second connection end, First connecting pin is electrically connected to the fingerprint sensor, and the second connection end is electrically connected to the pcb board；

Sensor stiffening plate, the sensor stiffening plate are fixed on the flexible circuit board away from the fingerprint sensor On one side, the sensor stiffening plate is fixed on the rack body by buffering foam.

In the present solution, the setting of sensor stiffening plate, which can be improved, fixes the position of fingerprint sensor in flexible circuit board Rigidity, and can by fingerprint sensor securely, be stably fixed to the fixed bracket of fingerprint.

In addition, tolerance can be absorbed in buffering foam, so that it is guaranteed that fingerprint recognition mould group and the fixed bracket of fingerprint can be filled smoothly It is assigned between front housing and rear shell, and guarantees stability, the fastness of structure after assembly precision and assembly.

The utility model additionally provides a kind of mobile terminal comprising fingerprint identification device as described above.

On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get the utility model respectively compared with Good example.

The positive effect of the utility model is:

The fixed bracket of fingerprint is arranged to include bracket by the fingerprint identification device of the utility model and mobile terminal containing it Ontology and extension, rack body fix fingerprint recognition mould group, and shell is fixed in the region being located at outside on the outside of pcb board in extension Body, being not necessarily to the aperture on pcb board in this way can be realized the fixation of fingerprint recognition mould group and shell, to improve the sky of pcb board Between utilization rate.

In addition, fingerprint recognition mould group is fixed on rack body, extension is fixed on shell, and only two relocate, compared to In traditional fingerprint identification device by the way of three reorientations, accumulated tolerance reduces, to improve fingerprint recognition mould group Positioning accuracy relative to shell.

Detailed description of the invention

Fig. 1 is the partial structure diagram of existing fingerprint identification device.

Fig. 2 is the part isometric structural schematic diagram of the fingerprint identification device of the utility model embodiment 1.

Fig. 3 is the part isometric structural schematic diagram of the fingerprint identification device of the utility model embodiment 2.

Fig. 4 is the enlarged structure schematic diagram of part A in Fig. 3.

Fig. 5 is the enlarged structure schematic diagram of part B in Fig. 3.

Fig. 6 is the fingerprint recognition mould group of the fingerprint identification device of the utility model embodiment 2 and support bracket fastened point of fingerprint Solution structure schematic diagram.

Description of symbols

The prior art

Fingerprint identification device: 1 '

Pcb board: 2 '

Fingerprint recognition mould group: 3 '

Fingerprint fixes bracket: 4 '

Positioning column: 5 '

Location hole: 6 '

The utility model

Fingerprint identification device: 1

Shell: 2

Side wall: 20

Pcb board: 3

Fingerprint recognition mould group: 4

Fingerprint sensor: 40

Flexible circuit board: 41

Buffering foam: 42

Fingerprint fixation bracket: 5

Rack body: 50

Ontology plastic portions: 500

Base metal part: 501

Extension: 51

First extension: 510

First extension main body: 511

First extension table: 512

First extension plastic portions: 513

First extension metal part: 514

Second extension: 515

Second extension main body: 516

Second extension table: 517

Second extension plastic portions: 518

Second extension metal part: 519

Occlusion structure: 520

Fastener: 6

Positioning rod structure: 7

Positioning column: 70

Location hole: 71

Buckle structure: 8

Clamping part: 80

Card slot: 81

Bracket gum: 9

Specific embodiment

The utility model is further illustrated below by the mode of embodiment, but is not therefore limited in the utility model Among the embodiment described range.

Embodiment 1

As shown in Fig. 2, fingerprint identification device 1 includes the fixed bracket 5 of shell 2, pcb board 3, fingerprint recognition mould group 4 and fingerprint. Pcb board 3 is fixed on shell 2.The fixed bracket 5 of fingerprint is placed in pcb board 3.Fingerprint recognition mould group 4 is fixed on the fixed bracket 5 of fingerprint. In the present embodiment, fingerprint identification device 1 is for mobile terminal, such as mobile phone, tablet computer etc..

The fixed bracket 5 of fingerprint includes rack body 50 and extension 51, and fingerprint recognition mould group 4 is fixed on rack body 50. Extension 51 is outside the outside that the outer edge of rack body 50 extends to pcb board 3.It is located at outside 3 outside of pcb board in extension 51 Shell 2 is fixed in region.

The fixed bracket 5 of fingerprint is arranged to include rack body 50 and extension 51, the fixed fingerprint recognition of rack body 50 Mould group 4, shell 2 is fixed in the region being located in extension 51 outside 3 outside of pcb board, in this way without the aperture on pcb board 3 The fixation for realizing fingerprint recognition mould group 4 and shell 2, to improve the space utilization rate of pcb board 3.

Fingerprint recognition mould group 4 is fixed on rack body 50, and extension 51 is fixed on shell 2, and only two relocate, compared to In traditional fingerprint identification device 1 by the way of three reorientations, accumulated tolerance reduces, to improve fingerprint recognition mould group 4 positioning accuracy relative to shell 2.

Embodiment 2

As seen in figures 3-6, fingerprint identification device 1 includes the fixed bracket of shell 2, pcb board 3, fingerprint recognition mould group 4 and fingerprint 5.Pcb board 3 is fixed on shell 2.The fixed bracket 5 of fingerprint is placed in pcb board 3.Fingerprint recognition mould group 4 is fixed on the fixed bracket of fingerprint 5.In the present embodiment, fingerprint identification device 1 is for mobile terminal, such as mobile phone, tablet computer etc..

The fixed bracket 5 of fingerprint includes rack body 50 and extension 51, and fingerprint recognition mould group 4 is fixed on rack body 50. Extension 51 is outside the outside that the outer edge of rack body 50 extends to pcb board 3.It is located at outside 3 outside of pcb board in extension 51 Shell 2 is fixed in region.In the present embodiment, shell 2 is the front housing of mobile terminal.Fingerprint recognition mould group 4 is located at mobile whole The back side at end deviates from the one side of user.

Specifically, as in Figure 3-5, the region that extension 51 is located at outside 3 outside of pcb board is removably connected to shell 2.This The sample prescription just fixed bracket 5 of fingerprint and the whole dismounting relative to shell 2 of fingerprint recognition mould group 4.In the present embodiment, extension 51 regions being located at outside 3 outside of pcb board are removably connected to shell 2 by fastener 6.Fastener 6 is specially screw.It can replace In the embodiment in generation, the region that extension 51 is located at outside 3 outside of pcb board can also be removable by other suitable connection structures It unloads and is connected to shell 2.

Further, extension 51 is located at the region outside 3 outside of pcb board and is equipped with location structure between shell 2.It will refer to During the fixed bracket 5 of line is installed on shell 2, location structure can be first passed through by extension 51 and be positioned at the predetermined of shell 2 Then extension 51 is fixed on and is removably connected to shell 2 being tightened by fastener 6 by design position.That is, fixed Bit architecture is convenient for for extension 51 being fixed on before shell 2 first positioning, when not only improving positioning accuracy, but also can save installation Between.

Specifically, location structure includes positioning rod structure 7 and buckle structure 8.Position rod structure 7 and buckle structure 8 with The vertical direction interval setting of the thickness direction of shell 2.The fixed bracket 5 of fingerprint can not only be improved in this way relative to shell 2 Positioning accuracy, and it is compact-sized.In the present embodiment, rod structure 7 and buckle structure 8 are positioned along the width direction of shell 2 Interval setting.

Further, shell 2 has the two sidewalls 20 being oppositely arranged, and two sidewalls 20 are respectively positioned on the length direction of shell 2. Positioning rod structure 7 and buckle structure 8 are located between the two sidewalls 20 of shell 2 and extension 51.Position rod structure 7 and buckle Structure 8 is located between the two sidewalls 20 of shell 2 and extension 51, can further increase shell 2 and extension 51 in this way Between positioning accuracy and reliability of positioning.

Referring to fig. 4, positioning rod structure 7 includes positioning column 70 and location hole 71, and positioning column 70 is arranged in location hole 71.At this In embodiment, positioning column 70 is set to shell 2, and location hole 71 is set to extension 51.It is fixed in alternative embodiment Position column 70 is set to extension 51, and location hole 71 is set to shell 2.

Referring to Fig. 5, buckle structure 8 includes clamping part 80 and card slot 81, and clamping part 80 is arranged in card slot 81.In this embodiment party In formula, clamping part 80 is set to shell 2, and card slot 81 is set to extension 51.In alternative embodiment, clamping part 80 is set It is placed in extension 51, card slot 81 is set to shell 2.

Referring again to Fig. 3, extension 51 includes the first extension 510 and the second extension 515.First extension 510 and second extension 515 extended out to outside the outside of pcb board 3 from the both sides of rack body 50 being oppositely arranged respectively. Shell 2 is fixed in first extension 510.And positioning rod structure 7 is set between the first extension 510 and shell 2.Second Shell 2 is fixed in extension 515.And buckle structure 8 is set between the second extension 515 and shell 2.First extension Points 510 and second extension 515 setting, can be improved the fixed bracket 5 of fingerprint relative to the positioning accuracy of shell 2 and solid Fixed stability, reliability.

Wherein, the first extension 510 includes the first extension main body 511 and the first extension table 512.First extends main body 511 outside the outside that the outer edge of rack body 50 extends out to pcb board 3.First extension table 512 extends main body from first 511 outer edge extends outwardly and is located at outside the outside of pcb board 3.First extension table 512 is located at the in the width direction of shell 2 One extends the outside of main body 511, and is located at the first front (i.e. the first extension table for extending main body 511 in the thickness direction of shell 2 512 extend main body 511 closer to the user oriented one side of mobile terminal relative to first in the thickness direction of shell 2).Positioning column Structure 7 is set between the first extension table 512 and shell 2.

Second extension 515 includes the second extension main body 516 and the second extension table 517.Second extends main body 516 from branch The outer edge of frame ontology 50 extends out to outside the outside of pcb board 3.The outside that second extension table 517 extends main body 516 from second Edge extends outwardly and is located at outside the outside of pcb board 3.Second extension table 517 is located at second in the width direction of shell 2 and extends main body 516 outside, and positioned at the front of the second extension main body 516, (i.e. the second extension table 517 is in shell 2 in the thickness direction of shell 2 Thickness direction extend main body 516 closer to the user oriented one side of mobile terminal relative to second).Buckle structure 8 is set to Between second extension table 517 and shell 2.

Referring to Fig. 6, rack body 50 includes ontology plastic portions 500 and base metal part 501.Ontology plastic portions 500 are integrally formed with base metal part 501.Fingerprint recognition mould group 4 is fixed on base metal part 501.In present embodiment In, ontology plastic portions 500 are fixed on pcb board 3 by bracket gum 9.

Extension 51 includes extending plastic portions and extension metal part.Extend plastic portions from ontology plastic portions 500 Outer edge extend outwardly, and with ontology plastic portions 500 be integrally formed.Extend metal part from base metal part 501 Outer edge extends outwardly, and is integrally formed with base metal part 501.

Extend plastic portions and extend metal part and is integrally formed.Extend the area being located at outside 3 outside of pcb board in metal part Shell 2 is fixed in domain.

The fixed bracket 5 of fingerprint is arranged to the above structure, can not only guarantee that the structure of the fixed bracket 5 of fingerprint is strong in this way Degree, additionally it is possible to reduce the fixed occupied space in molding of bracket 5 of fingerprint.

In the present embodiment, extend plastic portions and extend metal part and all have two, and two extension plastic parts It is divided to and two extension metal parts is arranged in a one-to-one correspondence.Two extension plastic portions are located at the two of ontology plastic portions 500 Side, and be respectively defined as the first extension plastic portions 513 and second and extend plastic portions 518.Two extension metal part difference Positioned at the two sides of base metal part 501, and it is respectively defined as the first extension metal part 514 and second and extends metal part 519.First extension table 512 and the second extension table 517 are respectively formed in two extension metal parts.First extension 510 packet It includes the first extension plastic portions 513 and first and extends metal part 514, first, which extends plastic portions 513 and first, extends metal Part 514 is integrally formed.Second extension 515 includes that the second extension plastic portions 518 and second extend metal part 519, Second, which extends plastic portions 518 and second, extends the integrated molding of metal part 519.

Specifically, referring to Fig. 3 and Fig. 6, pass through occlusion structure between ontology plastic portions 500 and base metal part 501 520 are integrally formed, and extend plastic portions and extend between metal part also by the integrated molding of occlusion structure 520.

Referring to Fig. 6, fingerprint recognition mould group 4 includes fingerprint sensor 40, flexible circuit board 41 and sensor stiffening plate (in figure It is not shown).Flexible circuit board 41 is fixedly connected with fingerprint sensor 40, and extends along the direction vertical with the thickness direction of shell 2 Fingerprint sensor 40 out.Flexible circuit board 41 has the first connecting pin and second connection end.First connecting pin is electrically connected to fingerprint Sensor 40, second connection end are electrically connected to pcb board 3 (referring to Fig. 3).

Sensor stiffening plate is fixed on the one side that flexible circuit board 41 deviates from fingerprint sensor 40.Sensor stiffening plate is set The rigidity that can be improved the position that fingerprint sensor 40 is fixed in flexible circuit board 41 is set, and can be by 40 jail of fingerprint sensor Gu, be stably fixed to the fixed bracket 5 of fingerprint.

Sensor stiffening plate is fixed on rack body 50 by buffering foam 42.Tolerance can be absorbed in buffering foam 42, from And ensure that fingerprint recognition mould group 4 and the fixed bracket 5 of fingerprint can be smoothly assembled between front housing and rear shell, and guarantee assembly precision And assembly after structure stability, fastness.In the present embodiment, sensor stiffening plate is fixed on by buffering foam 42 Base metal part 501.In alternative embodiment, sensor stiffening plate can also be fixed on ontology by fingerprint gum Metal part 501.

Embodiment 3

The mobile terminal of the present embodiment includes the fingerprint identification device of embodiment 1.In alternative embodiment, mobile terminal It may include the fingerprint identification device of embodiment 2.It is understood that mobile terminal can be mobile phone, tablet computer and notes This computer.

One embodiment may be furnished with multiple attached drawings, the same portion in the same embodiment in the description of the present invention, The appended drawing reference of part not necessarily marks in each attached drawing；It should be appreciated to those skilled in the art that embodiment In certain one or more attached drawing when be described, can be understood in conjunction with the other accompanying drawings in the embodiment；Ability Field technique personnel should be appreciated that do not indicate text it is specific it is corresponding be which attached drawing when, can be in conjunction in the embodiment All attached drawings are understood.

In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that This is merely illustrative of, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art Under the premise of without departing substantially from the principles of the present invention and essence, many changes and modifications may be made, But these change and modification each fall within the protection scope of the utility model.

Claims (10)

1. a kind of fingerprint identification device comprising the fixed bracket of shell, pcb board, fingerprint recognition mould group and fingerprint, the pcb board It is fixed on the shell, the fixed bracket of the fingerprint is placed in the pcb board, and the fingerprint recognition mould group is fixed on the fingerprint Fixed bracket, which is characterized in that the fingerprint fixes bracket and includes:

Rack body, the fingerprint recognition mould group are fixed on the rack body；

Extension, the extension is outside the outside that the outer edge of the rack body extends to the pcb board, the extension In the region that is located at outside on the outside of the pcb board be fixed on the shell.

2. fingerprint identification device as described in claim 1, which is characterized in that the extending part is outer on the outside of the pcb board Region be removably connected to the shell.

3. fingerprint identification device as described in claim 1, which is characterized in that the extending part is outer on the outside of the pcb board Region and the shell between be equipped with location structure.

4. fingerprint identification device as claimed in claim 3, which is characterized in that the location structure includes positioning rod structure and card Buckle structure, the positioning rod structure and the buckle structure are arranged at the direction interval vertical with the thickness direction of the shell.

5. fingerprint identification device as claimed in claim 4, which is characterized in that the positioning rod structure includes positioning column and positioning Hole, the positioning column are arranged in the location hole, and the positioning column is set to the shell, and the location hole is set to described prolong Extending portion, alternatively, the positioning column is set to the extension, the location hole is set to the shell；

The buckle structure includes clamping part and card slot, and the clamping part is arranged in the card slot, and the clamping part is set to institute Shell is stated, the card slot is set to the extension, alternatively, the clamping part is set to the extension, the card slot setting In the shell；

The shell has the two sidewalls being oppositely arranged, and two side walls are respectively positioned on the length direction of the shell, described fixed Position rod structure and the buckle structure are located between the two sidewalls of the shell and the extension.

6. fingerprint identification device as claimed in claim 4, which is characterized in that the extension includes the first extension and the Two extensions, first extension and the second extension respectively from the both sides of the rack body being oppositely arranged to It is extended to outside the outside of the pcb board outside, the shell, and the positioning column structure setting are fixed in first extension Between first extension and the shell, the shell is fixed in second extension, and the buckle is tied Structure is set between second extension and the shell.

7. fingerprint identification device as claimed in claim 6, which is characterized in that first extension includes the first extension master Body and the first extension table, the first extension main body extend out to the outer of the pcb board from the outer edge of the rack body Outside side, first extension table extends outwardly from the outer edge of the first extension main body and is located at outside the outside of the pcb board, First extension table is located at the described first outside for extending main body in the width direction of the shell, and in the thickness of the shell It spends direction and is located at the described first front for extending main body, the positioning column structure setting is in first extension table and the shell Between；

Second extension includes the second extension main body and the second extension table, and described second extends main body from the rack body Outer edge extends out to outside the outside of the pcb board, second extension table from it is described second extend main body outer edge to Outer extension is simultaneously located at outside the outside of the pcb board, and second extension table is located at described second in the width direction of the shell Extend the outside of main body, and is located at the described second front for extending main body, the buckle structure in the thickness direction of the shell It is set between second extension table and the shell.

8. fingerprint identification device as described in claim 1, which is characterized in that the rack body include ontology plastic portions and Base metal part, the ontology plastic portions and the base metal part are integrally formed, and the fingerprint recognition mould group is fixed In the base metal part；

The extension includes extending plastic portions and extending metal part, and the extension plastic portions are from the ontology plastic part The outer edge divided extends outwardly, and is integrally formed with the ontology plastic portions, and the extension metal part is golden from the ontology The outer edge for belonging to part extends outwardly, and is integrally formed with the base metal part；

The extension plastic portions and the extension metal part are integrally formed, and the PCB is located in the extension metal part The shell is fixed in region outside on the outside of plate.

9. fingerprint identification device as described in claim 1, which is characterized in that the fingerprint recognition mould group includes:

Fingerprint sensor；

Flexible circuit board, the flexible circuit board are fixedly connected with the fingerprint sensor, and along the thickness direction with the shell The fingerprint sensor is extended in vertical direction, and the flexible circuit board has the first connecting pin and second connection end, described First connecting pin is electrically connected to the fingerprint sensor, and the second connection end is electrically connected to the pcb board；

Sensor stiffening plate, the sensor stiffening plate are fixed on one that the flexible circuit board deviates from the fingerprint sensor Face, the sensor stiffening plate are fixed on the rack body by buffering foam.

10. a kind of mobile terminal, which is characterized in that it includes such as the described in any item fingerprint identification devices of claim 1-9.