Fingerprint identification module with integrated crown

Abstract

The utility model relates to the technical field of fingerprint identification, in particular to a crown integrated fingerprint identification module, which comprises a watch body and a crown, the crown is arranged on the side surface of the watch body, a cylindrical cavity with a rightward opening is arranged in the crown, a fingerprint sensor is arranged in the cavity, and the fingerprint sensor is arranged in the cylindrical cavity. The fingerprint sensor comprises a fingerprint contact panel, a mainboard chip, a positioning plate and a metal connecting contact section, a protective cover is installed at the right end of the watch crown, a limiting assembly is arranged on the inner side of the protective cover, the protective cover and the watch crown are movably connected through the limiting assembly, and the watch crown is provided with an elastic structure for resetting the limiting assembly. The limiting assembly comprises a transmission rod and a limiting block, the transmission rod is fixedly connected to the inner side of the protective cover, and the problems that unconscious limb movement of a wearer may cause accidental activation of a sensor, mistaken unlocking of equipment and other potential safety hazards are solved.

Description

Technical Field

[0001] This utility model relates to the field of fingerprint recognition technology, specifically to a crown-integrated fingerprint recognition module. Background Technology

[0002] The crown is an important component on the side of a watch or clock used to adjust the time, date, and other functions. It usually consists of a crown stem and a crown head. Its core functions include manually winding a mechanical watch, adjusting the hour and minute hands, and setting complex functions such as the calendar or moon phase. Crowns are made of various materials, commonly metals and ceramics. Their design balances practicality and aesthetics. They are a key interactive component for operating a watch and also a detail that reflects the brand's identity.

[0003] The existing publication number CN209950520U discloses a smart bracelet with a fingerprint recognition crown, characterized in that: the smart bracelet includes a movement, a strap, and a crown; the movement has a shell around its periphery, and the shell has a hole; the crown is connected to the movement through the hole; the crown includes a fingerprint sensor; the fingerprint sensor includes a fingerprint contact panel, a motherboard chip, a fingerprint faceplate, and a metal connecting contact section; the motherboard chip is located between the fingerprint contact panel and the fingerprint faceplate; one end of the metal connecting contact section is connected to the motherboard chip, and the other end passes through the hole and is connected to the movement.

[0004] However, during the wearing of smart devices, the fingerprint recognition module, as a core interactive component and security authentication entry point, directly determines the user experience and functional reliability of the device through its protective performance and resistance to accidental touches. The way the device is worn in close contact with the human body increases the risk of accidental touches. For example, friction from clothing when the wrist swings or unconscious limb movements of the wearer may cause the sensor to be accidentally activated, leading to security risks such as the device being locked due to misoperation. From the perspective of user experience, frequent accidental touch feedback will reduce the trust in operation. Utility Model Content

[0005] The purpose of this invention is to provide a crown-integrated fingerprint recognition module to solve the security risks such as accidental activation of the sensor due to unconscious limb movements of the wearer, which may lead to erroneous device locking.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The crown-integrated fingerprint recognition module includes a watch body and a crown. The crown is mounted on the side of the watch body. The crown has a cylindrical cavity with an opening facing right. A fingerprint sensor is installed inside the cavity. The fingerprint sensor includes a fingerprint contact panel, a motherboard chip, a positioning plate, and a metal contact segment. A protective cover is installed at the right end of the crown. A limit component is provided on the inner side of the protective cover. The protective cover and the crown are movably connected through the limit component. The crown has an elastic structure for resetting the limit component.

[0008] Preferably, the limiting component includes a transmission rod and a limiting block. The transmission rod is fixedly connected to the inner side of the protective cover, and the diameter of the limiting block is larger than that of the transmission rod, and the limiting block is fixedly connected to the end of the transmission rod.

[0009] Preferably, the surface of the crown is provided with a groove for the sliding of the limiting block.

[0010] Preferably, the elastic structure includes a return spring, which is disposed between the limiting block and the groove wall.

[0011] Preferably, a positioning block is fixedly connected to the surface of the crown, and a positioning groove for the positioning block to be embedded is provided on the inner side of the protective cover.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Through the limiting structure on the inside of the protective cover and the return spring in the groove on the crown, when the device is accidentally shaken, squeezed or bumped during daily carrying, the preload of the return spring and the limiting and guiding effect of the groove ensure that the protective cover always maintains a stable covering state. This structure can effectively avoid the risk of fingerprint sensor being falsely triggered due to the displacement of the protective cover, and avoid abnormal situations such as device malfunction or function malfunction caused by accidental touch, providing a reliable protective barrier for the fingerprint recognition module around the clock.

[0014] 2. The mechanical cooperation between the positioning block and the positioning groove forms a rigid constraint, which, together with the elastic force of the return spring, provides double protection so that the protective cover can stably fit the crown surface when not in operation, preventing the protective cover from loosening or shifting due to external vibration, friction, etc. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the motherboard chip of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a cross-sectional structural diagram of the protective cover of this utility model;

[0019] Figure 5 This is a cross-sectional structural diagram of the crown of this utility model.

[0020] In the diagram: 1. Watch body; 2. Crown; 3. Protective cover; 4. Positioning block; 5. Positioning groove; 6. Transmission rod; 7. Limiting block; 8. Slide groove; 9. Reset spring; 10. Fingerprint contact panel; 11. Mainboard chip; 12. Positioning plate. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1 to 5 This utility model provides a technical solution.

[0023] The crown-integrated fingerprint recognition module includes a watch body 1 and a crown 2. The watch body 1 houses the movement and is enclosed by a watch case to form an overall frame. The crown 2 is mounted on the side of the watch body 1 and serves both mechanical operation and biometric recognition functions. The crown 2 has a cylindrical cavity with an opening facing right. This cavity is the core space of the entire module, and a fingerprint sensor is installed inside. The fingerprint sensor module uses a capacitive sensing principle and includes a fingerprint contact panel 10, a motherboard chip 11, a positioning plate 12, and a metal contact segment. The fingerprint contact panel 10 is installed at the opening of the crown 2 cavity, flush with the end face of the crown 2. The fingerprint contact panel 10 is made of glass or ceramic, and its inner capacitive sensing array can accurately collect the capacitance difference signal between the fingerprint ridges. The positioning plate 12 is located within the crown 2 cavity and is a circular metal substrate. To ensure the axial positioning accuracy of the sensor module, its plate is hollowed out in the middle to reserve installation space for the main board chip 11. The main board chip 11 is installed on the surface of the positioning plate 12 and is located between the fingerprint contact panel 10 and the positioning plate 12. The main board chip 11 is attached to the upper surface of the hollow area of ​​the positioning plate 12. It can convert the analog signal output by the capacitive sensing array into a digital fingerprint image and transmit it to the main board in the movement of the watch body 1. One end of the metal connecting contact segment is soldered to the signal output pin of the main board chip 11 through surface mount technology, and the other end passes through the crown 2 and is pressed against the main board contact in the movement of the watch body 1 to realize signal transmission. When the user touches the fingerprint contact panel 10, the fingerprint contact panel 10 collects the fingerprint image. After the main board chip 11 processes the original signal, it transmits it to the main board of the watch body 1 through the metal connecting contact segment. The system software completes the fingerprint feature matching.

[0024] This crown-integrated fingerprint recognition module design achieves concealed installation of the fingerprint recognition module without changing the traditional watch operating habits, meeting the needs of miniaturization and high reliability of smart wearable devices.

[0025] A protective cover 3 is installed on the right end of the crown 2. A limiting component is provided on the inner side of the protective cover 3. The protective cover 3 and the crown 2 are movably connected through the limiting component. The crown 2 has an elastic structure for the limiting component to reset. When the fingerprint sensor is not needed, the protective cover 3 can cover the fingerprint contact panel 10, which can protect the fingerprint contact area and prevent accidental touch. The limiting component includes a transmission rod 6 and a limiting block 7. The transmission rod 6 is fixedly connected to the inner side of the protective cover 3. The diameter of the limiting block 7 is larger than that of the transmission rod 6, and the limiting block 7 is fixedly connected to the end of the transmission rod 6. The surface of the crown 2 is provided with a sliding groove 8 for the limiting block 7 to slide, providing a track for the sliding of the limiting block 7. When the fingerprint contact panel 10 needs to be used, the protective cover 3 is pulled to the right, and the limiting block 7 slides along the track of the sliding groove 8 until the fingerprint contact panel 10 is fully exposed. Then, the protective cover 3 is rotated around the limiting block 7 as an axis, so that the protective cover 3 rotates to the side of the fingerprint contact panel 10, making room for user operation.

[0026] The elastic structure includes a reset spring 9, which is located between the limiting block 7 and the groove wall of the slide 8. Its two ends contact the side of the limiting block 7 and the inner wall of the slide 8, respectively. In this way, the sliding of the limiting block 7 can compress the reset spring 9 without affecting the rotation of the limiting block 7. By setting the reset spring 9, when the fingerprint contact panel 10 is not in use, the reset spring 9 is in its natural state and holds the limiting block 7 with its elastic force to prevent the fingerprint contact panel 10 from being exposed due to the protective cover 3 accidentally moving to the right due to external force. When the fingerprint contact panel 10 needs to be operated, the protective cover 3 is pulled to the right, the limiting block 7 slides along the slide 8 and compresses the reset spring 9, so that it stores elastic potential energy. In this way, when the protective cover 3 moves back to its original position, the protective cover 3 is simply released, the reset spring 9 releases its elastic force to push the limiting block 7 to reset, and the protective cover 3 automatically closes the surface of the crown 2.

[0027] The crown 2 is fixedly connected to a positioning block 4. The inner side of the protective cover 3 is provided with a positioning groove 5 for the positioning block 4 to be embedded. When the protective cover 3 covers the fingerprint contact panel 10, the positioning block 4 will be precisely embedded in the positioning groove 5. The two work together to position the protective cover 3, ensuring that it is stably attached to the surface of the crown 2 when not in operation, and avoiding shaking or displacement.

[0028] The specific solution is as follows: When not in use, the protective cover 3 is closed on the right end of the crown 2, completely covering the fingerprint contact panel 10. At this time, the positioning block 4 on the surface of the crown 2 is precisely embedded in the positioning groove 5 inside the protective cover 3. At the same time, the limiting block 7 is pressed against the groove wall of the slide 8 by the natural elastic force of the reset spring 9, preventing the protective cover 3 from accidentally moving to the right and exposing the fingerprint contact panel 10 due to external force. When the fingerprint recognition function is needed, the protective cover 3 is pulled to the right. The transmission rod 6 fixedly connected to its inner side drives the limiting block 7 at the end to slide to the right along the track of the slide 8 on the surface of the crown 2. During this process, the reset spring 9 is compressed and stores elastic potential energy. At the same time, the positioning block 4 disengages from the positioning groove 5 and is unlocked until the limiting block 7 slides to the end of the slide 8, and the fingerprint contact panel 10 is fully exposed. Then, the protective cover 3 is rotated around the limiting block 7 as an axis, so that it rotates to the side of the fingerprint contact panel 10, making room for user operation.

[0029] 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 crown-integrated fingerprint recognition module, comprising a watch body (1) and a crown (2), the crown (2) being mounted on the side of the watch body (1), the crown (2) having a cylindrical cavity with an opening facing right inside, the cavity housing a fingerprint sensor, the fingerprint sensor comprising a fingerprint contact panel (10), a motherboard chip (11), a positioning plate (12), and a metal contact segment, characterized in that: A protective cover (3) is installed on the right end of the crown (2). A limiting component is provided on the inner side of the protective cover (3). The protective cover (3) and the crown (2) are movably connected through the limiting component. The crown (2) has an elastic structure for the limiting component to be reset.

2. The crown-integrated fingerprint recognition module according to claim 1, characterized in that, The limiting component includes a transmission rod (6) and a limiting block (7). The transmission rod (6) is fixedly connected to the inner side of the protective cover (3). The diameter of the limiting block (7) is larger than that of the transmission rod (6), and the limiting block (7) is fixedly connected to the end of the transmission rod (6).

3. The crown-integrated fingerprint recognition module according to claim 2, characterized in that, The surface of the crown (2) is provided with a groove (8) for the sliding of the limiting block (7).

4. The crown-integrated fingerprint recognition module according to claim 3, characterized in that, The elastic structure includes a return spring (9), which is disposed between the limiting block (7) and the groove wall of the slide (8).

5. The crown-integrated fingerprint recognition module according to claim 1, characterized in that, The crown (2) is fixedly connected to a positioning block (4), and the inner side of the protective cover (3) is provided with a positioning groove (5) for the positioning block (4) to be embedded.

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