A spring-loaded light-guiding fingerprint module structure

Abstract

The present invention discloses an elastic arm type light-guiding fingerprint module structure, including a pressing part, an elastic part, a PCB board, a button, and a shell; the elastic part includes a light-guiding ring bracket, an elastic left arm, and an elastic right arm; the light-guiding ring bracket is provided with a positioning groove extending from top to bottom, the positioning groove is provided with the pressing part, the shell is provided with a mounting groove extending from top to bottom, and the light-guiding ring bracket is located in the mounting groove. The present application can improve the accuracy and sensitivity of fingerprint recognition, allowing users to perform identity authentication and secure payment more quickly and conveniently, because the present application adopts an elastic arm type light-guiding fingerprint module structure, which can effectively solve the problems in the prior art that the pressure plate is easily displaced or tilted when subjected to force, and the LED light has poor light transmission effect under the fingerprint chip.

Description

Technical Field

[0001] The present invention relates to the technical field of fingerprint modules, and in particular to a spring-arm type light-guiding fingerprint module structure. Background Art

[0002] As fingerprint recognition technology is gradually recognized by the public under the guidance of the times, it is widely used in laptops, tablets, mobile phones and other products. At the same time, the requirements of various terminals and users for products are gradually increasing. While meeting the performance requirements, there are obvious requirements for product appearance, feel, key elasticity, service life, light guide effect, etc.

[0003] The mainstream fingerprint recognition technologies on the market can be divided into three categories: capacitive fingerprint recognition, optical fingerprint recognition and ultrasonic fingerprint recognition. Among them, optical fingerprint recognition is the most widely used fingerprint recognition technology. It uses the finger placed on the optical lens, illuminated by the built-in light source, projected on the charge device, and processed by the fingerprint chip into a multi-grayscale fingerprint recognition image.

[0004] The light guide module of the optical fingerprint recognition system guides the reflected light to an imaging device, and includes a pressing portion for light transmission and at least one light diffusion plate. The pressing portion has a plate surface for pressing by a finger. The light diffusion plate is arranged between the imaging device and the pressing portion, and has an opening opposite to the pressing portion and the imaging device for the reflected light to pass through, and a light guide ring formed around the opening.

[0005] However, the light guide module of the existing optical fingerprint recognition system has the following problems:

[0006] The buttons are crooked and cannot meet the appearance requirements. Since there is no fixed structure between the pressing part and the light guide ring, the pressing part is prone to displacement or tilt when subjected to force, affecting the user's pressing feeling and the appearance.

[0007] The feel of each pressing point of the button is inconsistent, and the pressing force and feel are inconsistent at each edge point of the fingerprint. Since there is no elastic structure between the pressing part and the light guide ring, the pressing part cannot evenly disperse the force when it is subjected to force, making the pressing feeling different at different positions, affecting the user experience.

[0008] The force on each key point is uneven, and the force on the key switch is uneven, which can easily cause the key to fail. Since there is no buffer structure between the pressing part and the light guide ring, the pressing part cannot effectively reduce the impact force when it is stressed, making the key switch easily damaged or aged.

[0009] The LED light is below the fingerprint chip, and the light transmission effect is poor. Since there is no reasonable light guide structure between the LED light and the fingerprint chip, the light emitted by the LED light cannot effectively illuminate the finger, affecting the clarity and recognition rate of the fingerprint image. Summary of the invention

[0010] The purpose of the present invention is to solve the above technical problems, thereby providing a spring-arm light-guiding fingerprint module structure;

[0011] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0012] The present invention provides a spring-arm light-guiding fingerprint module structure.

[0013] It includes a pressing part, an elastic part, a PCB board, a button, and a shell, wherein the upper end of the button is connected to the lower surface of the PCB board, one end of the PCB board is provided with a positioning hole through the upper and lower ends, and the elastic part is arranged on the upper surface of the PCB board;

[0014] The elastic part comprises a light guide ring bracket, an elastic left arm, and an elastic right arm, wherein the elastic left arm and the elastic right arm are respectively located on the left and right side walls of the light guide ring bracket, and a positioning protrusion is provided at the lower end of the light guide ring bracket close to the elastic left arm, and the elastic part and the PCB board are plugged and fixed via the positioning protrusion and the positioning hole, and the light guide ring bracket is provided with a positioning groove running through the upper and lower parts, and the pressing part is provided in the positioning groove, and the lower surface of the pressing part is in contact with the upper surface of the PCB board, and a first mounting hole is running through the elastic left arm, and a second mounting hole is running through the elastic right arm;

[0015] The left and right ends of the lower surface of the shell are respectively provided with a first positioning column and a second positioning column, the first positioning column cooperates with the first mounting hole, and the second positioning column cooperates with the second mounting hole, the shell and the elastic part are plugged and fixed through the first positioning column, the second positioning column and the first mounting hole, and the second mounting hole, and the shell is provided with a mounting groove running through the upper and lower parts, and the light guide ring bracket is located in the mounting groove.

[0016] Optionally, the elastic left arm includes a left arm section one, a left arm section two, and a left arm section three, one end of the left arm section two is connected to one end of the left arm section one, the other end of the left arm section two is connected to one end of the left arm section three, and the left arm section two is arranged obliquely;

[0017] The elastic right arm comprises a right arm section one, a right arm section two, and a right arm section three, one end of the right arm section two is connected to one end of the right arm section one, the other end of the right arm section two is connected to one end of the right arm section three, and the right arm section two is arranged obliquely;

[0018] A first elastic foam layer is arranged between the upper surface of the left arm section and the lower surface of the shell, and a second elastic foam layer is arranged between the upper surface of the right arm section and the lower surface of the shell.

[0019] Optionally, barrel grooves are provided at both left and right ends of the lower surface of the light guide ring bracket, and LED lights are arranged in the barrel grooves.

[0020] Optionally, a first protrusion is provided on the lower surface of the left end of the shell, the upper end of the first positioning column is connected to the lower surface of the first protrusion, the lower surface of the first protrusion is fitted with the upper surface of the three sections of the left arm, and a first gap is formed between the lower end of the shell and the elastic left arm through the first protrusion, and the first gap is used to facilitate the overall extension of the elastic left arm when pressing the pressing part;

[0021] A second protrusion is provided on the lower surface of the right end of the shell, the upper end of the second positioning column is connected to the lower surface of the second protrusion, the lower surface of the second protrusion is fitted with the upper surfaces of the three sections of the right arm, and a second gap is formed between the lower end of the shell and the elastic right arm through the second protrusion. The second gap is used to facilitate the overall extension of the elastic right arm when pressing the pressing part.

[0022] Optionally, a fingerprint connector is further provided at the lower end of the PCB board, and a key support pad is provided at the lower end of the key.

[0023] Optionally, the upper surface of the pressing part is lower than the upper surface of the light guide ring bracket, and a first chamfered structure is provided on the surface at the junction of the light guide ring bracket and the pressing part, and the first chamfered structure is used to prevent the light guide ring bracket from scratching hands. The upper end surface of the pressing part is provided with a second chamfered structure, and the second chamfered structure is used to prevent the pressing part from scratching hands during the pressing process.

[0024] Optionally, a first double-sided waterproof adhesive layer is provided between the lower surface of the first protrusion and the upper surface of the third section of the left arm, a second double-sided waterproof adhesive layer is provided between the lower surface of the second protrusion and the upper surface of the third section of the right arm, a third double-sided waterproof adhesive layer is provided between the first elastic foam layer and the lower surface of the shell and the first section of the left arm, and a fourth double-sided waterproof adhesive layer is provided between the second elastic foam layer and the lower surface of the shell and the first section of the right arm;

[0025] A fifth double-sided waterproof adhesive layer is provided at the junction of the PCB board and the pressing portion.

[0026] Optionally, the first section of the left arm, the second section of the left arm, and the third section of the left arm are configured as an integrally formed structure, or the first section of the left arm and the third section of the left arm are respectively welded to the left and right ends of the second section of the left arm;

[0027] The right arm section one, the right arm section two, and the right arm section three are configured as an integrally formed structure, or the right arm section one and the right arm section three are respectively welded to the left and right ends of the right arm section two.

[0028] The present invention provides an electronic device, which includes a device body and the elastic arm type light-guiding fingerprint module as described above, wherein the elastic arm type light-guiding fingerprint module structure is arranged on the device body.

[0029] Beneficial effects of the present invention

[0030] The present application can improve the accuracy and sensitivity of fingerprint recognition, so that users can perform identity authentication and secure payment more quickly and conveniently. This is because the present application adopts a spring-arm light-guiding fingerprint module structure, which can effectively solve the problems of the pressure plate in the prior art being easily displaced or tilted when subjected to force, and the poor light transmission effect of the LED lamp under the fingerprint chip, thereby making the collection and transmission of fingerprint images clearer and more stable, and the matching and control of fingerprint recognition more accurate and sensitive, thereby improving the user's efficiency and safety.

[0031] The present application can improve the aesthetics and intelligence of fingerprint recognition, allowing users to enjoy and trust the fingerprint recognition function more, and increase the attractiveness and competitiveness of the product. This is because the present application sets an LED light on the light guide ring bracket, and through the light guide structure such as the barrel groove, the light emitted by the LED light can be evenly irradiated on the finger, thereby making the fingerprint image clearer and more beautiful. At the same time, it also makes the light guide module structure have a decorative and prompting function, which increases the aesthetics and intelligence of the product. In addition, the present application also sets elastic structures such as an elastic left arm and an elastic right arm so that the pressing part can remain horizontal when subjected to force, and will not be displaced or tilted, thereby making the appearance of the product more neat and symmetrical, and increasing the aesthetics and accuracy of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a cross-sectional view of the structure of the present invention.

[0033] Figure 2 It is a cross-sectional view of the elastic part structure of the present invention.

[0034] Figure 3 It is a cross-sectional view of the shell structure of the present invention.

[0035] Figure 4 For the present invention Figure 1 A partial enlarged view.

[0036] Figure 5 This is a cross-sectional view of the PCB board structure of the present invention.

[0037] Figure 6 It is a schematic diagram of the electronic device of the present invention.

[0038] Explanation of the accompanying drawings: 1-pressing part, 2-elastic part, 3-PCB board, 4-button, 5-housing, 6-positioning hole, 7-light guide ring bracket, 8-elastic left arm, 9-elastic right arm, 10-positioning protrusion, 11-positioning groove, 12-first mounting hole, 13-second mounting hole, 14-first positioning column, 15-second positioning column, 16-mounting groove, 17-left arm section 1, 18-left arm section 2, 19-left arm section 3, 20-right arm section 1, 21-right arm section 2, 22-right arm section 3, 23-first protrusion, 24-second protrusion, 25-first elastic foam layer, 26-second elastic foam layer, 27-first gap, 28-second gap, 29-fingerprint connector, 30-button support pad, 31-first chamfered structure, 32-second chamfered structure, 33-LED lamp. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example

[0041] like Figure 1-6 As shown, the present invention provides a spring-arm light-guiding fingerprint module structure.

[0042] It includes a pressing part 1, an elastic part 2, a PCB board 3, a button 4, and a housing 5. The upper end of the button 4 is connected to the lower surface of the PCB board 3. One end of the PCB board 3 is penetrated by a positioning hole 6. The elastic part 2 is arranged on the upper surface of the PCB board 3.

[0043] The elastic part 2 includes a light guide ring bracket 7, an elastic left arm 8, and an elastic right arm 9. The elastic left arm 8 and the elastic right arm 9 are respectively located on the left and right side walls of the light guide ring bracket 7. A positioning protrusion 10 is provided at the lower end of the light guide ring bracket 7 near the elastic left arm 8. The elastic part 2 and the PCB board 3 are plugged and fixed with the positioning protrusion 10 and the positioning hole 6. The light guide ring bracket 7 is provided with a positioning groove 11 from top to bottom. The pressing part 1 is provided in the positioning groove 11. The lower surface of the pressing part 1 is in contact with the upper surface of the PCB board 3. A first mounting hole 12 is provided on the elastic left arm 8, and a second mounting hole 13 is provided on the elastic right arm 9.

[0044] The left and right ends of the lower surface of the shell 5 are respectively provided with a first positioning column 14 and a second positioning column 15, the first positioning column 14 cooperates with the first mounting hole 12, and the second positioning column 15 cooperates with the second mounting hole 13. The shell 5 and the elastic part 2 are plugged and fixed through the first positioning column 14, the second positioning column 15 and the first mounting hole 12, the second mounting hole 13. The shell 5 is penetrated by a mounting groove 16 from top to bottom, and the light guide ring bracket 7 is located in the mounting groove 16.

[0045] The left and right ends of the lower surface of the light guide ring bracket 7 are provided with barrel grooves, and LED lights 33 are arranged in the barrel grooves;

[0046] A fingerprint connector 29 is also provided at the lower end of the PCB board 3, and a key support pad 30 is provided at the lower end of the key 4;

[0047] It should be noted that, in this embodiment, the pressing portion 1 is configured as a key cap bracket or a fingerprint IC, which can be configured according to actual needs;

[0048] During use of the present invention, when a user needs to perform fingerprint recognition, the user first places the finger on the pressing portion 1 of the light guide module structure. The upper surface of the pressing portion 1 is lower than the upper surface of the light guide ring bracket 7. A first chamfered structure 31 is provided on the surface at the junction of the light guide ring bracket 7 and the pressing portion 1. The first chamfered structure 31 is used to prevent the light guide ring bracket 7 from scratching the hand. A second chamfered structure 32 is provided on the upper end surface of the pressing portion 1. The second chamfered structure 32 is used to prevent the pressing portion 1 from scratching the hand during the pressing process, thereby ensuring the comfort and safety of the user.

[0049] When the user presses the pressing part 1, the lower surface of the pressing part 1 fits with the upper surface of the PCB board 3. The lower end of the PCB board 3 is also provided with a fingerprint connector 29, which is connected to the fingerprint chip, thereby realizing the collection and transmission of the fingerprint image. At the same time, the lower surface of the pressing part 1 will also trigger the switch of the button 4 on the PCB board 3, thereby realizing the start and control of fingerprint recognition;

[0050] When the user presses the pressing part 1, the elastic part 2 is also acted upon by a force. The elastic part 2 includes a light guide ring bracket 7, an elastic left arm 8, and an elastic right arm 9. The elastic left arm 8 and the elastic right arm 9 are respectively located on the left and right side walls of the light guide ring bracket 7. The elastic part 2 and the PCB board 3 are plugged and fixed with the positioning protrusion 10 and the positioning hole 6. The elastic left arm 8 includes a left arm section 17, a left arm section 2 18, and a left arm section 3 19. One end of the left arm section 2 18 is connected to one end of the left arm section 17, and the other end of the left arm section 2 18 is connected to one end of the left arm section 3 19. The left arm section 2 18 is tilted; the elastic right arm 9 includes a right arm section 20 , right arm second section 21, right arm third section 22, one end of the right arm second section 21 is connected to one end of the right arm first section 20, and the other end of the right arm second section 21 is connected to one end of the right arm third section 22. The right arm second section 21 is tilted, so that when the user presses the pressing part 1, the elastic left arm 8 and the elastic right arm 9 can play a role of buffering and supporting, so that the pressing part 1 remains horizontal without displacement or tilting, thereby improving the appearance and pressing feeling. At the same time, the elastic left arm 8 and the elastic right arm 9 can also increase the elasticity of the elastic part 2, reduce the space occupied by the elastic part 2, and increase the stability of the elastic part 2;

[0051] When the user presses the pressing part 1, the LED lamp 33 will also be lit. The LED lamp 33 is arranged in the barrel grooves at both ends of the lower surface of the light guide ring bracket 7. The light emitted by the LED lamp 33 is reflected and refracted by the light guide ring bracket 7 and the barrel groove and then irradiated onto the finger, thereby improving the clarity and recognition rate of the fingerprint image. At the same time, the light guide ring bracket 7 can also play a decorative and prompting role, making the light guide module structure more beautiful and intelligent.

[0052] The present application also considers issues such as waterproofing and dustproofing, and a double-sided waterproof adhesive layer or a double-sided adhesive layer is set between each structure to achieve sealing and fixation, as follows:

[0053] A first double-sided waterproof adhesive layer is provided between the lower surface of the first protrusion 23 and the upper surface of the left arm third section 19;

[0054] A second double-sided waterproof adhesive layer is provided between the lower surface of the second protrusion 24 and the upper surface of the third section 22 of the right arm;

[0055] A third double-sided waterproof adhesive layer is disposed between the first elastic foam layer 25 and the lower surface of the housing 5 and the left arm section 17;

[0056] A fourth double-sided waterproof adhesive layer is disposed between the second elastic foam layer 26 and the lower surface of the housing 5 and the right arm section 20;

[0057] A fifth double-sided waterproof adhesive layer is provided at the junction of the PCB board 3 and the pressing portion 1;

[0058] In this way, moisture and dust can be effectively prevented from entering the interior of the light guide module structure, thereby ensuring the normal operation and service life of the light guide module structure;

[0059] In this embodiment, the inclined setting of the left arm second section 18 and the inclined setting of the right arm second section 21 have the following effects:

[0060] The elasticity of the elastic part 2 can be increased, so that the pressing part 1 can rebound better when subjected to force, thereby improving the pressing feeling and service life. This is because the inclined setting of the left arm second section 18 and the right arm second section 21 can increase the deformation space of the elastic part 2, so that the elastic part 2 can produce greater elastic deformation when subjected to force, thereby improving the recovery ability and durability of the elastic part 2;

[0061] The space occupied by the elastic part 2 can be reduced, making the light guide module structure more compact and convenient for installation and layout. This is because the inclined arrangement of the left arm second section 18 and the right arm second section 21 can reduce the height of the elastic part 2, so that the total height of the light guide module structure is reduced, thereby saving space and materials and improving the integration and adaptability of the light guide module structure.

[0062] The stability of the elastic part 2 can be increased, so that the pressing part 1 can maintain a horizontal state when subjected to force, without displacement or tilt, thereby improving the appearance and fingerprint recognition rate. This is because the inclined setting of the left arm section 18 and the right arm section 21 can increase the supporting torque of the elastic part 2, so that the elastic part 2 can generate greater resistance when subjected to force, thereby ensuring the horizontal position and direction of the pressing part 1, and improving the symmetry and accuracy of the light guide module structure.

[0063] A first protrusion 23 is provided on the lower surface of the left end of the housing 5, the upper end of the first positioning column 14 is connected to the lower surface of the first protrusion 23, the lower surface of the first protrusion 23 is in contact with the upper surface of the third section 19 of the left arm, and a first gap 27 is formed between the lower end of the housing 5 and the elastic left arm 8 through the first protrusion 23, and the first gap 27 is used to facilitate the overall extension of the elastic left arm 8 when the pressing portion 1 is pressed;

[0064] A second protrusion 24 is provided on the lower surface of the right end of the housing 5, the upper end of the second positioning column 15 is connected to the lower surface of the second protrusion 24, the lower surface of the second protrusion 24 is fitted with the upper surface of the third section 22 of the right arm, and a second gap 28 is formed between the lower end of the housing 5 and the elastic right arm 9 through the second protrusion 24, and the second gap 28 is used to facilitate the overall extension of the elastic right arm 9 when pressing the pressing part 1;

[0065] The first gap 27 and the second gap 28 have the following effects:

[0066] The ductility of the elastic part 2 can be increased, so that the pressing part 1 can better adapt to different finger sizes and shapes when subjected to force, thereby improving the accuracy and sensitivity of fingerprint recognition. This is because the first gap 27 and the second gap 28 can provide a larger deformation space for the elastic left arm 8 and the elastic right arm 9, so that the elastic left arm 8 and the elastic right arm 9 can produce a larger extension deformation when subjected to force, so that the pressing part 1 can fit more closely with different fingers, thereby improving the collection quality of the fingerprint image and the matching degree of fingerprint recognition.

[0067] The force on the elastic part 2 can be reduced, so that the pressing part 1 can better protect the switch of the key 4 when it is stressed, and the service life and stability of the switch of the key 4 can be extended. This is because the first gap 27 and the second gap 28 can provide a larger buffer space for the elastic left arm 8 and the elastic right arm 9, so that the elastic left arm 8 and the elastic right arm 9 can produce a larger buffer deformation when they are stressed, so that the pressing part 1 can form a larger buffer distance with the PCB board 3, reducing the impact force and wear force on the switch of the key 4, and improving the durability and reliability of the switch of the key 4.

[0068] The resilience of the elastic part 2 can be increased, so that the pressing part 1 can recover to its original state more quickly after being stressed, thereby improving the pressing feeling and service life. This is because the first gap 27 and the second gap 28 can provide a larger recovery space for the elastic left arm 8 and the elastic right arm 9, so that the elastic left arm 8 and the elastic right arm 9 can produce a larger recovery deformation after being stressed, thereby forming a smaller recovery distance between the pressing part 1 and the PCB board 3, increasing the feedback force and feedback speed to the finger, and improving the user's satisfaction and trust.

[0069] A first elastic foam layer 25 is provided between the upper surface of the left arm section 17 and the lower surface of the shell 5, and a second elastic foam layer 26 is provided between the upper surface of the right arm section 20 and the lower surface of the shell 5. The first elastic foam layer 25 and the second elastic foam layer 26 can increase the softness of the elastic part 2 on the one hand, so that the pressing part 1 can better adapt to the pressure of the finger when subjected to force, improve the pressing comfort and the sensitivity of fingerprint recognition, and on the other hand, reduce the noise of the elastic part 2, so that the pressing part 1 can better reduce the friction sound and collision sound when subjected to force, improve the quietness of use and user satisfaction, and can also increase the protection of the elastic part 2, so that the pressing part 1 can better prevent scratches and wear between the shell 5 and the elastic arm when subjected to force, and improve the durability and stability of the light guide module structure;

[0070] The left arm section 17, the left arm section 2 18, and the left arm section 3 19 are configured as an integrally formed structure, or the left arm section 17 and the left arm section 3 19 are respectively welded to the left and right ends of the left arm section 2 18; in this embodiment, the left arm section 17, the left arm section 2 18, and the left arm section 3 19 are configured as an integrally formed structure, and the integrally formed structure facilitates improving the overall structural strength;

[0071] The right arm section 1 20, the right arm section 21, and the right arm section 3 22 are configured as an integrally formed structure, or the right arm section 1 20 and the right arm section 3 22 are respectively welded to the left and right ends of the right arm section 21. In this embodiment, the right arm section 1 20, the right arm section 21, and the right arm section 3 22 are configured as an integrally formed structure, and the integrally formed structure facilitates improving the overall structural strength;

[0072] The present invention has the following effects:

[0073] The present application can improve the accuracy and sensitivity of fingerprint recognition, allowing users to authenticate their identities and make secure payments more quickly and conveniently. This is because the present application adopts a spring-arm light-guiding fingerprint module structure, which can effectively solve the problems in the prior art that the pressure plate is easily displaced or tilted when subjected to force, and the LED light 33 has poor light transmission under the fingerprint chip. This makes the collection and transmission of fingerprint images clearer and more stable, and the matching and control of fingerprint recognition more accurate and sensitive, thereby improving user efficiency and safety.

[0074] The present application can improve the comfort and safety of fingerprint recognition, allowing users to use the fingerprint recognition function more comfortably and safely, and avoid problems such as scratches and infections. This is because the present application respectively sets a first chamfer structure 31 and a second chamfer structure on the surface of the junction between the light guide ring bracket 7 and the pressing part 1 and the upper end surface of the pressing part 1. These two chamfer structures can effectively prevent the light guide ring bracket 7 and the pressing part 1 from scratching the user's fingers during the user's pressing process, thereby ensuring the user's comfort and safety. At the same time, the present application also sets a double-sided waterproof adhesive layer or a double-sided adhesive layer between each structure to achieve sealing and fixation. These waterproof adhesive layers or adhesive layers can effectively prevent moisture and dust from entering the interior of the light guide module structure, thereby ensuring the cleanliness and hygiene of the light guide module structure.

[0075] The present application can improve the aesthetics and intelligence of fingerprint recognition, allowing users to enjoy and trust the fingerprint recognition function more, and increase the attractiveness and competitiveness of the product. This is because the present application sets an LED lamp 33 on the light guide ring bracket 7, and through the light guide structure such as the barrel groove, the light emitted by the LED lamp 33 can be evenly irradiated on the finger, so that the fingerprint image is clearer and more beautiful, and at the same time, the light guide module structure has a decorative and prompting function, which increases the aesthetics and intelligence of the product. In addition, the present application also sets elastic structures such as the elastic left arm 8 and the elastic right arm 9 so that the pressing part 1 can remain horizontal when subjected to force, and will not be displaced or tilted, so that the appearance of the product is more neat and symmetrical, and the aesthetics and accuracy of the product are increased.

[0076] The present application can improve the durability and stability of fingerprint recognition, so that users can use the fingerprint recognition function for a longer time and reliably, and reduce the cost and risk of maintenance and replacement. This is because the present application reduces the stress, noise, scratches, wear and other problems of the elastic part 2 by setting the first gap 27, the second gap 28 and other buffer spaces and the first elastic foam layer 25, the second elastic foam layer 26 and other buffer materials, so that the pressing part 1 can better protect the key 4 switch, the PCB board 3, the fingerprint chip and other core components when the force is applied, and prolong their service life and stability. At the same time, the present application also increases the elasticity, ductility, resilience and other effects of the elastic part 2 by setting the inclined structures such as the left arm second section 18 and the right arm second section 21 and the recovery spaces such as the first gap 27 and the second gap 28, so that the pressing part 1 can return to its original state faster after being stressed, improving the pressing feeling and service life.

[0077] In summary, the present application has the beneficial effects of improving the accuracy, sensitivity, comfort, safety, aesthetics, intelligence, durability, stability, etc. of fingerprint recognition, and is an innovative and practical light guide module structure.

[0078] The present invention provides an electronic device, which includes a device body and the elastic arm type light-guiding fingerprint module as described above, wherein the elastic arm type light-guiding fingerprint module structure is arranged on the device body.

[0079] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spring-arm light-guiding fingerprint module structure, characterized in that: It includes a pressing part, an elastic part, a PCB board, a button, and a shell, wherein the upper end of the button is connected to the lower surface of the PCB board, one end of the PCB board is provided with a positioning hole through the upper and lower ends, and the elastic part is arranged on the upper surface of the PCB board; The elastic part comprises a light guide ring bracket, an elastic left arm, and an elastic right arm, wherein the elastic left arm and the elastic right arm are respectively located on the left and right side walls of the light guide ring bracket, and a positioning protrusion is provided at the lower end of the light guide ring bracket close to the elastic left arm, and the elastic part and the PCB board are plugged and fixed via the positioning protrusion and the positioning hole, and the light guide ring bracket is provided with a positioning groove running through the upper and lower parts, and the pressing part is provided in the positioning groove, and the lower surface of the pressing part is in contact with the upper surface of the PCB board, and a first mounting hole is running through the elastic left arm, and a second mounting hole is running through the elastic right arm; The left and right ends of the lower surface of the shell are respectively provided with a first positioning column and a second positioning column, the first positioning column cooperates with the first mounting hole, and the second positioning column cooperates with the second mounting hole, the shell and the elastic part are plugged and fixed through the first positioning column, the second positioning column and the first mounting hole, and the second mounting hole, and the shell is provided with a mounting groove running through the upper and lower parts, and the light guide ring bracket is located in the mounting groove.

2. The elastic arm light-guiding fingerprint module structure according to claim 1, characterized in that: The elastic left arm comprises a first section, a second section and a third section, one end of the second section is connected to one end of the first section, the other end of the second section is connected to one end of the third section, and the second section is inclined; The elastic right arm comprises a right arm section one, a right arm section two, and a right arm section three, one end of the right arm section two is connected to one end of the right arm section one, the other end of the right arm section two is connected to one end of the right arm section three, and the right arm section two is arranged obliquely; A first elastic foam layer is arranged between the upper surface of the left arm section and the lower surface of the shell, and a second elastic foam layer is arranged between the upper surface of the right arm section and the lower surface of the shell.

3. The elastic arm light-guiding fingerprint module structure according to claim 1, characterized in that: Barrel grooves are provided at both left and right ends of the lower surface of the light guide ring bracket, and LED lights are arranged in the barrel grooves.

4. The elastic arm light-guiding fingerprint module structure according to claim 2, characterized in that: A first protrusion is provided on the lower surface of the left end of the shell, the upper end of the first positioning column is connected to the lower surface of the first protrusion, the lower surface of the first protrusion is in contact with the upper surface of the three sections of the left arm, and a first gap is formed between the lower end of the shell and the elastic left arm through the first protrusion, and the first gap is used to facilitate the extension of the elastic left arm as a whole when pressing the pressing part; A second protrusion is provided on the lower surface of the right end of the shell, the upper end of the second positioning column is connected to the lower surface of the second protrusion, the lower surface of the second protrusion is fitted with the upper surfaces of the three sections of the right arm, and a second gap is formed between the lower end of the shell and the elastic right arm through the second protrusion. The second gap is used to facilitate the overall extension of the elastic right arm when pressing the pressing part.

5. The elastic arm light-guiding fingerprint module structure according to claim 1, characterized in that: A fingerprint connector is also provided at the lower end of the PCB board, and a key support pad is provided at the lower end of the key.

6. The elastic arm light-guiding fingerprint module structure according to claim 4, characterized in that: The upper surface of the pressing part is lower than the upper surface of the light guide ring bracket. The surface at the junction of the light guide ring bracket and the pressing part is provided with a first chamfered structure, and the first chamfered structure is used to prevent the light guide ring bracket from scratching hands. The upper end surface of the pressing part is provided with a second chamfered structure, and the second chamfered structure is used to prevent the pressing part from scratching hands during the pressing process.

7. The elastic arm light-guiding fingerprint module structure according to claim 6, characterized in that: A first double-sided waterproof adhesive layer is provided between the lower surface of the first protrusion and the upper surface of the third section of the left arm, a second double-sided waterproof adhesive layer is provided between the lower surface of the second protrusion and the upper surface of the third section of the right arm, a third double-sided waterproof adhesive layer is provided between the first elastic foam layer and the lower surface of the shell and the first section of the left arm, and a fourth double-sided waterproof adhesive layer is provided between the second elastic foam layer and the lower surface of the shell and the first section of the right arm; A fifth double-sided waterproof adhesive layer is provided at the junction of the PCB board and the pressing portion.

8. The elastic arm light-guiding fingerprint module structure according to claim 2, characterized in that: The first section of the left arm, the second section of the left arm, and the third section of the left arm are configured as an integrally formed structure, or the first section of the left arm and the third section of the left arm are respectively welded to the left and right ends of the second section of the left arm; The right arm section one, the right arm section two, and the right arm section three are configured as an integrally formed structure, or the right arm section one and the right arm section three are respectively welded to the left and right ends of the right arm section two.

9. An electronic device, characterized in that: The electronic device comprises a device body and the elastic arm type light-guiding fingerprint module according to any one of claims 1 to 8, wherein the elastic arm type light-guiding fingerprint module structure is arranged on the device body.

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