An elastic clamping fingerprint module fixing structure

Abstract

The utility model belongs to the technical field of fingerprint module installation, and disclose a kind of elastic clamping's fingerprint module fixed structure, including elastic cooperation extension piece, end head sealing piece, first elastic piece and second elastic piece and so on structure, elastic cooperation extension piece and end head sealing piece jointly constitute the support structure of fingerprint detection head, the gap reserved between the two and detection head forms movable space, can buffer the pressure generated by excessive pressing, reduce the damage of detection head due to excessive pressing, first elastic piece and second elastic piece realize adaptive adhesion function, the two are metal elastic sheet, can be changed according to finger pressure distribution, promote detection head and finger adhesion, increase contact area, improve identification effect, and when equipment vibration or drop, first, second elastic piece can absorb impact force, reduce detection head vibration, avoid internal component damage. Overall structure can prolong the service life of fingerprint module, improve practicality.

Description

Technical Field

[0001] This utility model relates to the field of fingerprint module installation technology, specifically to a flexible clamping fingerprint module fixing structure. Background Technology

[0002] Fingerprint recognition technology, as one of the core technologies in the field of biometrics, has been widely applied to various fields such as consumer electronics, smart homes, and security due to its uniqueness, stability, and convenience. In the smartphone industry, fingerprint modules have become a mainstream configuration, supporting key functions such as device unlocking and payment. In smart home scenarios, fingerprint locks, by integrating fingerprint recognition modules, achieve intelligent management of door locks, replacing traditional mechanical keys. In addition, laptops, tablets, smart wearable devices, and other products have also incorporated fingerprint modules, providing users with an efficient and secure method of identity verification.

[0003] However, existing fingerprint modules still have significant technical limitations in practical applications, restricting user experience and product lifespan. Because the surface of a human finger is not perfectly flat but has natural curves and textures, the effective contact area between the finger and the module's detection head is often insufficient when a user performs fingerprint recognition with a light touch. This insufficient contact leads to missing or blurred information during fingerprint image acquisition, directly causing a decrease in recognition sensitivity, manifesting as multiple recognition failures and response delays. This problem is particularly pronounced when the user's fingers are dry, sweaty, or slightly dirty.

[0004] Therefore, some users subconsciously apply excessive pressure during the recognition process, attempting to increase the success rate by increasing the pressure. However, the detection heads of existing fingerprint modules are mostly made of brittle materials such as glass, ceramic, or sapphire, and their structural strength and impact resistance have certain thresholds. Long-term and repeated excessive pressure will aggravate damage to the internal structure, eventually causing the fingerprint recognition function to fail and significantly shortening the lifespan of the module. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a flexible clamping fingerprint module fixing structure to solve the problems mentioned in the background art, such as the significant reduction in the lifespan of the fingerprint module caused by forceful pressing.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a flexible clamping fingerprint module fixing structure, comprising:

[0007] The fingerprint module body includes a circuit structure package and a fingerprint detection probe. The circuit structure package contains an electronic circuit structure that realizes the fingerprint detection function, and the fingerprint detection probe is disposed above the circuit structure package.

[0008] An elastically mating extension, which is a square plate-shaped structure, is disposed between the circuit structure package and the fingerprint detection probe.

[0009] An end-sealing component, wherein the end-sealing component is a square plate-shaped structure, and the end-sealing component is disposed on the outside of the fingerprint detection probe;

[0010] The mounting base is a plastic or metal shell base for mobile phones, laptops, and locks, and the mounting base includes an outer shell and an internal support structure block;

[0011] Multiple sets of first elastic elements are disposed inside the outer shell, and the multiple sets of first elastic elements are symmetrically distributed on both sides of the fingerprint module body;

[0012] Multiple sets of second elastic elements are provided on the internal support structure block at the locations corresponding to the elastically mating extension elements.

[0013] Preferably, the elastic fitting extension has a module connection hole at its center, one end of the fingerprint detection probe away from the detection surface passes through the elastic fitting extension, a signal feed line is provided in the module connection hole, and the circuit structure package is electrically connected to the fingerprint detection probe through the signal feed line.

[0014] Preferably, the end seal has a detection window at its center, the fingerprint detection probe passes through the detection window, and the detection surface of the fingerprint detection probe is placed outside the housing.

[0015] Preferably, the first elastic element is a Z-shaped metal sheet with elasticity. One end of the first elastic element is disposed between the elastic fitting extension and the end sealing element, and the first elastic element and the end sealing element are fixedly connected by adhesive. The other end of the first elastic element is attached to the inner sidewall of the outer shell, and the outer shell and the first elastic element are provided with an anti-displacement structure.

[0016] Preferably, the anti-displacement structure includes a circular protrusion and a circular groove. The anti-displacement structure is disposed on the first elastic member, and the circular groove is disposed on the inner sidewall of the outer shell corresponding to the circular protrusion.

[0017] Preferably, the second elastic element is a C-shaped metal sheet with elasticity, one end of the second elastic element abuts against the bottom surface of the elastic fitting extension, and the other end of the second elastic element abuts against the top surface of the internal support structure block.

[0018] Preferably, the internal support structure block has a square groove corresponding to the second elastic member, and one side of the second elastic member is engaged in the square groove.

[0019] Compared with the prior art, the present invention provides a flexible clamping fingerprint module fixing structure, which has the following advantages:

[0020] This elastically clamped fingerprint module fixing structure includes an elastically fitting extension, an end sealing component, a first elastic component, a second elastic component, and a fitting structure. The elastically fitting extension and the end sealing component support the fingerprint detection probe, and gaps are left between the structures to provide space for the fingerprint detection probe to move when pressed, thus preventing damage to the probe due to excessive pressure. The first and second elastic components utilize the elasticity of the metal spring to adaptively drive the entire detection probe close to the finger, enabling the fingerprint detection probe to better extract fingerprint information. This structure has strong pressure and shock resistance, good stability, and can prevent damage to the fingerprint module due to excessive pressure, significantly improving its service life and practicality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall fixed state of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the elastic fitting extension, the end sealing part, and the second elastic part of this utility model;

[0024] Figure 4 This is a schematic diagram of the first elastic element and its mating structure of the present invention.

[0025] In the diagram: 1. Fingerprint module body; 2. Circuit structure package; 3. Fingerprint detection probe; 4. Elastic fitting extension; 5. End sealing component; 6. Outer shell; 7. Internal support structure block; 8. First elastic component; 9. Second elastic component; 10. Module connection hole; 11. Detection window; 12. Anti-offset structure; 13. Round convex; 14. Round groove; 15. Square groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-4 This utility model provides a technical solution:

[0028] A flexible clamping fingerprint module fixing structure, comprising:

[0029] The fingerprint module body 1 includes a circuit structure package 2 and a fingerprint detection probe 3. The circuit structure package 2 contains an electronic circuit structure that realizes the fingerprint detection function, and the fingerprint detection probe 3 is located above the circuit structure package 2.

[0030] The elastic fitting extension 4 is a square plate structure and is disposed between the circuit structure package 2 and the fingerprint detection probe 3.

[0031] End sealing component 5, which is a square plate structure, is located on the outside of the fingerprint detection probe 3;

[0032] The mounting base is a plastic or metal shell base for mobile phones, laptops, and locks. The mounting base includes an outer shell 6 and an internal support structure block 7.

[0033] Multiple sets of first elastic elements 8 are disposed inside the outer shell 6, and multiple sets of first elastic elements 8 are symmetrically distributed on both sides of the fingerprint module body 1.

[0034] Multiple sets of second elastic elements 9 are provided on the internal support structure block 7 at the corresponding elastically fitted extension element 4.

[0035] Furthermore, a module connection hole 10 is provided in the center of the elastic fitting extension 4. The end of the fingerprint detection probe 3 facing away from the detection surface passes through the elastic fitting extension 4. A signal feed line is provided in the module connection hole 10. The circuit structure package 2 and the fingerprint detection probe 3 are electrically connected through the signal feed line.

[0036] Furthermore, a detection window 11 is provided at the center of the end seal 5, through which the fingerprint detection probe 3 passes, with its detection surface positioned outside the outer casing 6. The elastic fitting extension 4 and the end seal 5 together constitute the support structure for the fingerprint detection probe 3, and the gap between them and the probe 3 creates a movable space. When a user performs fingerprint recognition, if the pressure is light, the probe 3 remains relatively stable under the support of the elastic fitting extension 4, ensuring basic recognition performance. When the pressure is excessive, the probe 3 will move slightly inward along the gap, using this space to buffer and offset some of the pressure, preventing direct collision between the probe 3 and the rigid structure, thereby reducing damage caused by excessive pressure.

[0037] Furthermore, the first elastic element 8 is a Z-shaped metal sheet with elasticity. One end of the first elastic element 8 is disposed between the elastic fitting extension 4 and the end sealing element 5, and the first elastic element 8 and the end sealing element 5 are fixedly connected by adhesive. The other end of the first elastic element 8 is attached to the inner side wall of the outer shell 6, and the outer shell 6 and the first elastic element 8 are provided with an anti-displacement structure 12.

[0038] Furthermore, the anti-displacement structure 12 includes a circular protrusion 13 and a circular groove 14. The anti-displacement structure 12 is disposed on the first elastic member 8, and the circular groove 14 is disposed on the inner sidewall of the outer casing 6 corresponding to the circular protrusion 13. The anti-displacement structure 12 can prevent the first elastic member 8 from shifting after repeated use.

[0039] Furthermore, the second elastic element 9 is a C-shaped metal sheet with elasticity. One end of the second elastic element 9 abuts against the bottom surface of the elastic fitting extension 4, and the other end of the second elastic element 9 abuts against the top surface of the internal support structure block 7.

[0040] Furthermore, the internal support structure block 7 has a square groove 15 corresponding to the second elastic member 9, and one side of the second elastic member 9 is inserted into the square groove 15. The second elastic member 9 is small in size, and it would be too difficult to process a round convex structure similar to the first elastic member 8. It cannot be processed by stamping like the first elastic member 8. Therefore, the square groove 15 is set to limit its position and prevent it from shifting.

[0041] Structural Description:

[0042] Fingerprint module body 1: includes circuit structure package 2 and fingerprint detection probe 3, which is the core overall structure for realizing fingerprint detection function;

[0043] Circuit structure package 2: It contains an electronic circuit structure located below the fingerprint detection probe 3, providing circuit support for fingerprint detection;

[0044] Fingerprint detection probe 3: It is set above the circuit structure package 2, with the detection surface placed outside the outer shell 6, and is used to collect finger fingerprint information;

[0045] Elastic fitting extension 4: a square plate-shaped structure, located between the circuit structure package 2 and the fingerprint detection probe 3, with a module connection hole 10 in the center, which serves as a support and fit;

[0046] End sealing component 5: a square plate-shaped structure, located on the outside of the fingerprint detection head 3, with a detection window 11 in the center, which serves to seal and support the detection head;

[0047] Outer shell 6: Part of the mounting base, which is a plastic or metal shell for devices such as mobile phones, where various components are installed internally, providing external protection;

[0048] Internal support structure block 7: Part of the mounting base, located inside the outer shell 6, used to support components such as the second elastic element 9;

[0049] First elastic element 8: Z-shaped metal sheet, located inside the outer shell 6 and symmetrically distributed on both sides of the fingerprint module body 1, one end is connected to the end sealing element 5, and the other end is attached to the inner side of the outer shell 6, playing an elastic support and buffering role.

[0050] Second elastic element 9: C-shaped metal sheet, located on the internal support structure block 7 at the location corresponding to the elastic fitting extension 4, with both ends abutting against the two to achieve elastic support;

[0051] Module connection hole 10: Opened in the center of the elastic fitting extension 4, for the fingerprint detection probe 3 to pass through, and has a signal feed line inside connecting the circuit structure package 2 and the detection probe 3;

[0052] Detection window 11: Located in the center of the end seal 5, it allows the fingerprint detection probe 3 to pass through, exposing the detection surface;

[0053] Anti-displacement structure 12: includes a round protrusion 13 and a round groove 14, which are provided at the corresponding positions of the first elastic member 8 and the inner sidewall of the outer shell 6 to prevent the first elastic member 8 from displaced;

[0054] Circular protrusion 13: It belongs to the anti-displacement structure 12, is set on the first elastic element 8, and cooperates with the circular groove 14 to prevent displacement;

[0055] Circular groove 14: It belongs to the anti-displacement structure 12 and is located on the inner side wall of the outer shell 6 at the corresponding circular protrusion 13, and is used in conjunction with the circular protrusion 13;

[0056] Square groove 15: It is formed on the internal support structure block 7, corresponding to the second elastic element 9, and is used to limit the position of the second elastic element 9 to prevent displacement.

[0057] Working Principle: The working principle of this elastically clamped fingerprint module fixing structure revolves around three key aspects: pressure buffering, adaptive fitting, and structural protection. The components work together to achieve stable and efficient fingerprint recognition. Regarding pressure buffering, the elastically fitting extension 4 and the end sealing component 5 together form the support structure for the fingerprint detection head 3. The gap between them and the detection head 3 creates a movable space. When the user performs fingerprint recognition, if the pressure is light, the detection head 3 remains relatively stable under the support of the elastically fitting extension 4, ensuring basic recognition performance. When the pressure is too high, the detection head 3 will move slightly inward along the gap, using this space to buffer and offset some of the pressure, preventing direct collision between the detection head 3 and the rigid structure, thereby reducing damage caused by excessive pressure. The adaptive fitting function is achieved by the first elastic component 8 and the second elastic component 9, both of which are metal springs with good elasticity and deformation recovery capabilities. They are installed on the edge and bottom of the detection head 3, respectively, forming multi-directional elastic support. When a finger lightly touches the sensor head 3, the natural curvature of the finger surface makes it difficult for traditional fixed structures to achieve sufficient contact. However, the metal spring in this structure deforms to varying degrees according to the pressure distribution of the finger: in areas of low pressure, the spring pushes the sensor head 3 closer to the finger; in areas of closer contact, the spring slightly contracts to adapt to the pressure changes. This dynamic adjustment allows the sensor head 3 to better conform to the finger, increasing the contact area, ensuring effective fingerprint extraction, and improving recognition performance. When the device experiences vibration or drops, the first elastic element 8 and the second elastic element 9 absorb the impact through their elastic deformation, reducing vibration of the sensor head 3 and preventing damage to the internal circuitry and sensors from violent shaking. Overall, this structure avoids damage from excessive pressure through pressure buffering, achieves adaptive contact between the sensor head 3 and the finger through elastic elements to ensure recognition performance, and enhances protection and stability through structural design, extending the lifespan of the fingerprint module body 1 and improving practicality.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible clamping fingerprint module fixing structure, characterized in that, include: The fingerprint module body (1) includes a circuit structure package (2) and a fingerprint detection probe (3). The circuit structure package (2) contains an electronic circuit structure that realizes the fingerprint detection function, and the fingerprint detection probe (3) is located above the circuit structure package (2). The elastic fitting extension (4) is a square plate structure and is disposed between the circuit structure package (2) and the fingerprint detection probe (3). End sealing component (5), the end sealing component (5) is a square plate structure, the end sealing component (5) is disposed on the outside of the fingerprint detection probe (3); The mounting base is a plastic or metal shell base for mobile phones, laptops and locks, and the mounting base includes an outer shell (6) and an internal support structure block (7). Multiple sets of first elastic elements (8) are disposed inside the outer shell (6), and multiple sets of first elastic elements (8) are symmetrically distributed on both sides of the fingerprint module body (1); Multiple sets of second elastic elements (9) are provided on the internal support structure block (7) at the location corresponding to the elastic fitting extension element (4).

2. The fingerprint module fixing structure with elastic clamping according to claim 1, characterized in that, The elastic fitting extension (4) has a module connection hole (10) in the center. The end of the fingerprint detection probe (3) facing away from the detection surface passes through the elastic fitting extension (4). A signal feed line is provided in the module connection hole (10). The circuit structure package (2) and the fingerprint detection probe (3) are electrically connected through the signal feed line.

3. The fingerprint module fixing structure with elastic clamping according to claim 1, characterized in that, The end seal (5) has a detection window (11) in the center, the fingerprint detection probe (3) passes through the detection window (11), and the detection surface of the fingerprint detection probe (3) is placed outside the outer shell (6).

4. The fingerprint module fixing structure with elastic clamping according to claim 1, characterized in that, The first elastic element (8) is a Z-shaped metal sheet with elasticity. One end of the first elastic element (8) is disposed between the elastic fitting extension (4) and the end sealing element (5), and the first elastic element (8) and the end sealing element (5) are fixedly connected by adhesive. The other end of the first elastic element (8) is attached to the inner sidewall of the outer shell (6), and the outer shell (6) and the first elastic element (8) are provided with an anti-displacement structure (12).

5. The fingerprint module fixing structure with elastic clamping according to claim 4, characterized in that, The anti-displacement structure (12) includes a round protrusion (13) and a round groove (14). The anti-displacement structure (12) is disposed on the first elastic member (8), and the round groove (14) is disposed on the inner side wall of the outer shell (6) corresponding to the round protrusion (13).

6. The fingerprint module fixing structure with elastic clamping according to claim 1, characterized in that, The second elastic element (9) is a C-shaped metal sheet with elasticity. One end of the second elastic element (9) abuts against the bottom surface of the elastic fitting extension (4), and the other end of the second elastic element (9) abuts against the top surface of the internal support structure block (7).

7. The fingerprint module fixing structure with elastic clamping according to claim 6, characterized in that, The internal support structure block (7) has a square groove (15) corresponding to the second elastic member (9), and one side of the second elastic member (9) is stuck in the square groove (15).

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