A sensor with a surface hardness protective coating

Abstract

The utility model relates to related technical field of sensor especially, it is a kind of sensor with surface hardness protective coating, including shell, the inner ring bottom surface of shell is connected with cabin, the inner ring surface of cabin is connected with fingerprint sensor. This sensor with surface hardness protective coating, by the setting of protective coating and lifting mechanism, in the use process, protective coating is diamond-like carbon coating, can effectively prevent the scratch, wear and tear that easily produce because of frequent contact or friction, cause the problem of performance decline or failure, lifting mechanism is driven under the first micro motor, drive connecting disc rotation, connecting disc drive the hinge mechanism that is made of first connecting block, first support rod, special-shaped rod and second support rod rotates lifting along first connecting rod, further realize the opening and closing of baffle, when needing fingerprint detection, open baffle, when not needing fingerprint detection, close baffle, can reduce the risk of being destroyed when not needing use.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to a sensor with a surface hardness protective coating. Background Technology

[0002] A sensor is a detection device that can detect and sense information about the external environment or the state of objects (such as temperature, light, pressure, motion, etc.) and convert it into electrical or digital signals that can be recognized and processed by electronic devices. As the "sensory organs" of the Internet of Things and intelligent systems, sensors connect the physical world and the digital world and are widely used in industrial automation, smart homes, medical devices, environmental monitoring, and other fields. They are the foundation for realizing intelligent sensing and automatic control of equipment. Among many sensors, fingerprint sensors are quite common. They are biometric devices used to collect and identify fingerprint patterns. Their core function is to identify or confirm personal identity by analyzing the unique features of fingerprints (such as patterns, ridge details, etc.). Fingerprint sensors are widely used in smartphone unlocking, access control systems, mobile payments, and other scenarios, providing users with a fast, secure, and personalized authentication method, effectively replacing traditional passwords or keys. While improving security, they also enhance ease of use. However, in some industrial environments, due to poor field conditions, fingerprint sensors are prone to performance degradation due to wear and tear.

[0003] To address the aforementioned issues, a search revealed patent CN212541366U, which discloses a fingerprint recognition device with protective features. The patent states: "1. This fingerprint recognition device with protective features, by setting a protective mechanism on the outer casing, uses a protective plate within the mechanism to protect the fingerprint sensor inside the protective cover, preventing dust accumulation on the fingerprint sensor and preventing damage from external objects. 2. This fingerprint recognition device with protective features, through the cooperation between the mounting tube and the air box within the outer casing, can both utilize the heat generated by the mainboard inside the outer casing and..." The fingerprint sensor surface is dried by heating the heating wire inside the mounting tube and then drying the liquid through a fan box. 3. This fingerprint recognition device with protective function can also dry the liquid on the fingerprint sensor surface by using the heating wire on the protective plate and the fan on the protective cover. Although setting two drying methods (using circuit board heating or active heating with heating wire) can quickly remove liquid residue from the sensor surface and improve the recognition rate when using wet hands, the active heating method increases the device's energy consumption and may cause local overheating or accelerate component aging in frequent use scenarios due to continuous heating.

[0004] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0005] The purpose of this invention is to provide a sensor with a surface hardness protective coating to solve the problem mentioned in the background art that existing sensors with surface hardness protective coatings are easily affected by wear caused by friction and collision during use, especially fingerprint sensors in industrial environments, thus affecting their sensing performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sensor with a surface hardness protective coating, comprising a housing and a lifting mechanism.

[0007] The bottom inner ring of the outer shell is connected to a compartment, the inner ring surface of the compartment is connected to a fingerprint sensor, the upper surface of the fingerprint sensor is coated with a protective coating, and the bottom inner ring of the outer shell is provided with a lifting mechanism.

[0008] The lifting mechanism includes a support plate. A first bracket is connected to the bottom surface of the inner ring of the outer shell. A first micro motor is installed in the mounting groove of the first bracket. A connecting plate is sleeved on the outer ring surface of the output end of the first micro motor. A first connecting block is connected to the outer ring surface of the connecting plate. A first support rod is sleeved on the outer ring of the connecting shaft of the first connecting block. A shaped rod is sleeved on the outer ring of the connecting shaft at the other end of the first support rod. A second connecting block is sleeved on the outer ring surface of the connecting shaft at the other end of the shaped rod. A baffle is connected to the upper surface of the second connecting block. A third connecting block is connected to the lower surface of the baffle. A second support rod is sleeved on the outer ring of the connecting shaft of the third connecting block.

[0009] Preferably, the fingerprint sensor can slide vertically along the inner sidewall of the compartment, and the protective coating is a diamond-like carbon coating.

[0010] Preferably, the bottom surface of the inner ring of the outer shell is connected to the lower surface of the support plate, and the output end of the first micro motor passes through both sides of the support plate.

[0011] Preferably, the irregular rod and the second support rod are connected to the support plate through two sets of first connecting rods, and both the irregular rod and the second support rod can rotate around the first connecting rod. A limit rod is connected to one side surface of the support plate.

[0012] Preferably, the bottom surface of the inner ring of the housing is provided with a shock-absorbing mechanism, the shock-absorbing mechanism including a first spring, the lower surface of the first spring being connected to the bottom surface of the inner ring of the housing, and the upper surface of the first spring being connected to the lower surface of the fingerprint sensor.

[0013] Preferably, a sleeve post is connected to the bottom surface of the inner ring of the outer shell, a sliding post is connected to the inner ring surface of the sleeve post, and a second spring is provided on the outer side of the sleeve post and the sliding post.

[0014] Preferably, the bottom surface of the inner ring of the outer casing is provided with a cleaning mechanism, the cleaning mechanism including a support column, and a second connecting rod is connected through the upper end of the support column.

[0015] Preferably, a cleaning belt is fitted on the outer ring surface of the second connecting rod, and a track is fitted on the outer ring surface of one end of the second connecting rod.

[0016] Preferably, a second bracket is connected to the bottom surface of the inner ring of the outer shell, a second micro motor is installed in the mounting groove of the second bracket, and the outer ring surface of the output end of the second micro motor is connected to the inner ring surface of the track.

[0017] Preferably, the bottom surface of the inner ring of the housing is provided with a blower mechanism, the blower mechanism includes a fan, and the output end of the fan is connected to a blower head.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This sensor with a surface hardness protective coating, through the setting of the protective coating and the lifting mechanism, during use, the protective coating is a diamond-like carbon coating, which can effectively prevent scratches and wear caused by frequent contact or friction, thus preventing performance degradation or failure. The lifting mechanism, driven by the first micro motor, drives the connecting plate to rotate. The connecting plate drives the hinge mechanism composed of the first connecting block, the first support rod, the irregular rod and the second support rod to rotate and lift along the first connecting rod, thereby realizing the opening and closing of the baffle. When fingerprint detection is required, the baffle is opened; when fingerprint detection is not required, the baffle is closed, which can reduce the risk of damage when not in use.

[0020] 2. This sensor with a surface hardness protective coating, through the arrangement of a shock-absorbing mechanism, a cleaning mechanism, and a blower mechanism, provides shock protection during use. The shock-absorbing mechanism can prevent the fingerprint sensor from being impacted and can prevent pressure damage caused by excessive force when the operator presses the fingerprint sensor. The cleaning mechanism can remove dirt from the operator's fingers by friction before the operator presses the fingerprint sensor. At the same time, the blower mechanism can blow away the dirt. In addition, when the baffle is open and the finger is pressed on the fingerprint sensor, the blower mechanism can also remove debris from the protective coating with airflow. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the cooperative structure of the second connecting rod and the cleaning belt 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 in which the second bracket and the second micro motor cooperate with each other according to this utility model;

[0024] Figure 4 This is a schematic diagram of the structure in which the fingerprint sensor and the protective coating of this utility model cooperate.

[0025] Figure 5 This is a schematic diagram of the interlocking structure of the sleeve column and the sliding column of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure in which the first support rod and the irregular rod of this utility model cooperate with each other.

[0027] In the diagram: 1. Outer shell; 2. Compartment; 3. Fingerprint sensor; 4. Protective coating; 5. Lifting mechanism; 501. Support plate; 502. First bracket; 503. First micro motor; 504. Connecting plate; 505. First connecting block; 506. First support rod; 507. Irregular rod; 508. Second connecting block; 509. Baffle; 510. Third connecting block; 511. Second support rod; 512. First connecting rod; 513. Limiting rod; 6. Shock absorption mechanism; 601. First spring; 602. Sleeve column; 603. Sliding column; 604. Second spring; 7. Cleaning mechanism; 701. Support column; 702. Second connecting rod; 703. Cleaning belt; 704. Track; 705. Second bracket; 706. Second micro motor; 8. Blowing mechanism; 801. Fan; 802. Fan head. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-6 This utility model provides a technical solution: a sensor with a surface hardness protective coating, including a housing 1 and a lifting mechanism 5.

[0030] The bottom inner ring of the outer shell 1 is connected to a compartment 2, the inner ring surface of the compartment 2 is connected to a fingerprint sensor 3, the upper surface of the fingerprint sensor 3 is coated with a protective coating 4, and the bottom inner ring of the outer shell 1 is provided with a lifting mechanism 5.

[0031] The lifting mechanism 5 includes a support plate 501. A first bracket 502 is connected to the bottom surface of the inner ring of the outer shell 1. A first micro motor 503 is installed in the mounting groove of the first bracket 502. A connecting plate 504 is sleeved on the outer ring surface of the output end of the first micro motor 503. A first connecting block 505 is connected to the outer ring surface of the connecting plate 504. A first support rod 506 is sleeved on the outer ring of the connecting shaft of the first connecting block 505. A shaped rod 507 is sleeved on the outer ring of the connecting shaft at the other end of the first support rod 506. A second connecting block 508 is sleeved on the outer ring surface of the connecting shaft at the other end of the shaped rod 507. A baffle 509 is connected to the upper surface of the second connecting block 508. A third connecting block 510 is connected to the lower surface of the baffle 509. A second support rod 511 is sleeved on the outer ring of the connecting shaft of the third connecting block 510. The model of the first micro motor 503 is: 28BYJ-48 type 5V DC geared stepper micro motor.

[0032] Furthermore, the fingerprint sensor 3 can slide vertically along the inner sidewall of the compartment 2. The protective coating 4 is a diamond-like carbon coating. Through the configuration of the compartment 2 and the protective coating 4, the fingerprint sensor 3 can be buffered, protected, and its surface strengthened during use. The fingerprint sensor 3 can slide along the sidewall of the compartment 2, providing space for the shock absorption mechanism 6 to function. The protective coating 4 is a diamond-like carbon coating, which has extremely high hardness and wear resistance, effectively preventing scratches and wear on the surface of the fingerprint sensor 3 due to frequent contact or friction, thus extending its service life.

[0033] Furthermore, the bottom surface of the inner ring of the outer shell 1 is connected to the lower surface of the support plate 501, and the output end of the first micro motor 503 passes through both sides of the support plate 501. Through the arrangement of the outer shell 1, the support plate 501 and the first micro motor 503, a stable installation foundation and power transmission path can be provided for the lifting mechanism 5 during use. The bottom surface of the inner ring of the outer shell 1 serves as the bearing surface of the entire internal structure, and the support plate 501 is fixed on it, providing an installation platform for components such as the first micro motor 503. The output end of the first micro motor 503 passes through the support plate 501 and transmits torque to the connecting plate 504 above, driving the entire lifting mechanism 5 to move.

[0034] Furthermore, the irregular rod 507 and the second support rod 511 are connected to the support plate 501 through two sets of first connecting rods 512, and both the irregular rod 507 and the second support rod 511 can rotate around the first connecting rod 512. A limit rod 513 is connected to one side surface of the support plate 501. Through the setting of the first connecting rod 512 and the limit rod 513, the rotational motion can be converted into the lifting motion of the baffle 509 and the range of motion can be limited during use. The first connecting rod 512 serves as the rotation fulcrum of the irregular rod 507 and the second support rod 511, allowing them to rotate around the axis, thereby converting the rotational motion of the connecting plate 504 into the linear lifting motion of the baffle 509. The limit rod 513 is used to limit the lifting stroke of the baffle 509 to prevent it from being over-opened or over-closed, ensuring accurate and reliable operation.

[0035] Furthermore, a shock-absorbing mechanism 6 is provided on the bottom surface of the inner ring of the outer casing 1. The shock-absorbing mechanism 6 includes a first spring 601. The lower surface of the first spring 601 is connected to the bottom surface of the inner ring of the outer casing 1, and the upper surface of the first spring 601 is connected to the lower surface of the fingerprint sensor 3. Through the setting of the first spring 601, the fingerprint sensor 3 can be buffered and protected during use. The first spring 601 is directly pressed against the bottom of the fingerprint sensor 3. When the finger presses or there is an external impact, the spring undergoes elastic deformation, absorbing most of the impact energy and preventing the fingerprint sensor 3 from being damaged due to excessive force. At the same time, it can also improve the pressing feel.

[0036] Furthermore, a sleeve post 602 is connected to the bottom surface of the inner ring of the outer casing 1, and a sliding post 603 is connected to the inner ring surface of the sleeve post 602. A second spring 604 is provided on the outer side of the sleeve post 602 and the sliding post 603. Through the arrangement of the sleeve post 602, the sliding post 603 and the second spring 604, guidance and auxiliary support can be provided for the shock absorption mechanism 6 during use. The sleeve post 602 and the sliding post 603 slide together to provide precise vertical guidance for the up and down movement of the fingerprint sensor 3, preventing it from deflecting or getting stuck. The second spring 604 is sleeved on the outside and works in conjunction with the first spring 601 to provide additional buffering force and ensure that the fingerprint sensor 3 can be smoothly reset when not pressed.

[0037] Furthermore, a cleaning mechanism 7 is provided on the bottom surface of the inner ring of the outer casing 1. The cleaning mechanism 7 includes a support column 701, and a second connecting rod 702 is connected through the upper end of the support column 701. Through the setting of the support column 701 and the second connecting rod 702, the cleaning belt 703 can be installed and driven during use. The support column 701 is fixed to the bottom surface of the outer casing 1 to provide support at both ends for the second connecting rod 702. The second connecting rod 702 is the mounting shaft of the cleaning belt 703.

[0038] Furthermore, a cleaning belt 703 is fitted onto the outer surface of the second connecting rod 702, and a track 704 is fitted onto the outer surface of one end of the second connecting rod 702. Through the arrangement of the cleaning belt 703 and the track 704, it is possible to clean the dirt on the surface of the finger and transmit power during use. The cleaning belt 703 is made of a soft, slightly frictional material and is used to wipe away dust, oil and other impurities on the surface of the fingerprint sensor 3 before the finger touches it. The track 704 is installed at one end of the second connecting rod 702 and is used to receive power from the second micro motor 706.

[0039] Furthermore, a second bracket 705 is connected to the bottom surface of the inner ring of the outer casing 1. A second micro motor 706 is installed in the mounting slot of the second bracket 705. The outer ring surface of the output end of the second micro motor 706 is connected to the inner ring surface of the track 704. Through the arrangement of the second bracket 705, the second micro motor 706 and the track 704, power can be provided to the cleaning mechanism 7 during use. The second bracket 705 stably supports the second micro motor 706. The second micro motor 706 serves as a power source, and its output shaft drives the track 704 to rotate. The track 704 drives the second connecting rod 702 and the cleaning belt 703 to rotate through friction, thereby realizing the cleaning function. The model of the second micro motor 706 is: N20 type 6V DC micro geared micro motor.

[0040] Furthermore, a blower mechanism 8 is provided on the bottom inner ring of the outer casing 1. The blower mechanism 8 includes a blower 801, and the output end of the blower 801 is connected to a blower head 802. Through the setting of the blower 801 and the blower head 802, the debris and moisture that are cleaned can be removed during use. The blower 801 generates airflow, and the blower head 802 directs the airflow to the cleaning belt 703 and the fingerprint sensor 3 area, blowing away the dust and debris wiped off by the cleaning belt 703, and assisting in drying any small amount of moisture that may be present, keeping the sensor area clean and dry, and ensuring the recognition effect. The model of the blower 801 is: 5015 type 5V centrifugal blower.

[0041] Working principle: First, the outer casing 1 is fixed on the operating table to ensure its stability. Then, the first micro motor 503 of the lifting mechanism 5 is started. The first micro motor 503 drives the connecting plate 504 to rotate. The connecting plate 504 drives the first connecting block 505. The first connecting block 505 rotates around the first connecting rod 512 through the first support rod 506 and the irregular rod 507, and pushes the second connecting block 508 and the baffle 509 to rise. At the same time, the third connecting block 510 and the second support rod 511 move in coordination. The limiting rod 513 limits the lifting stroke. When a finger approaches, the second micro motor 706 of the cleaning mechanism 7 drives the second connecting rod 702 to rotate via the track 704, causing the cleaning belt 703 to wipe away dirt on the finger surface. At the same time, the blower 801 of the blower mechanism 8 blows away debris through the blower head 802. When the finger presses the fingerprint sensor 3, the first spring 601 of the shock absorption mechanism 6 and the sliding column 603 inside the sleeve column 602 are compressed, the second spring 604 assists in buffering, and the protective coating 4 protects the surface of the fingerprint sensor 3. After use, the first micro motor 503 reverses to close the baffle 509.

[0042] 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 sensor with a surface hardness protective coating, comprising a housing (1) and a lifting mechanism (5), characterized in that: The inner bottom surface of the outer shell (1) is connected to a compartment (2), the inner surface of the compartment (2) is connected to a fingerprint sensor (3), the upper surface of the fingerprint sensor (3) is coated with a protective coating (4), and the inner bottom surface of the outer shell (1) is provided with a lifting mechanism (5). The lifting mechanism (5) includes a support plate (501). The bottom surface of the inner ring of the outer shell (1) is connected to a first bracket (502). A first micro motor (503) is installed in the mounting groove of the first bracket (502). A connecting plate (504) is sleeved on the outer ring surface of the output end of the first micro motor (503). A first connecting block (505) is connected to the outer ring surface of the connecting plate (504). A first support rod (506) is sleeved on the outer ring of the connecting shaft of the first connecting block (505). A shaped rod (507) is sleeved on the outer ring of the connecting shaft at the other end of the first support rod (506). A second connecting block (508) is sleeved on the outer ring surface of the connecting shaft at the other end of the shaped rod (507). A baffle (509) is connected to the upper surface of the second connecting block (508). A third connecting block (510) is connected to the lower surface of the baffle (509). A second support rod (511) is sleeved on the outer ring of the connecting shaft of the third connecting block (510).

2. A sensor with a surface hardness protective coating according to claim 1, characterized in that: The fingerprint sensor (3) can slide vertically along the inner sidewall of the compartment (2), and the protective coating (4) is a diamond-like carbon coating.

3. A sensor with a surface hardness protective coating according to claim 1, characterized in that: The bottom surface of the inner ring of the outer shell (1) is connected to the lower surface of the support plate (501), and the output end of the first micro motor (503) passes through both sides of the support plate (501).

4. A sensor with a surface hardness protective coating according to claim 1, characterized in that: The irregular rod (507) and the second support rod (511) are connected to the support plate (501) through two sets of first connecting rods (512), and both the irregular rod (507) and the second support rod (511) can rotate around the first connecting rod (512). A limit rod (513) is connected to one side surface of the support plate (501).

5. A sensor with a surface hardness protective coating according to claim 1, characterized in that: The inner bottom surface of the outer shell (1) is provided with a shock-absorbing mechanism (6), which includes a first spring (601). The lower surface of the first spring (601) is connected to the inner bottom surface of the outer shell (1), and the upper surface of the first spring (601) is connected to the lower surface of the fingerprint sensor (3).

6. A sensor with a surface hardness protective coating according to claim 1, characterized in that: The inner bottom surface of the outer shell (1) is connected to a sleeve post (602), the inner surface of the sleeve post (602) is connected to a sliding post (603), and a second spring (604) is provided on the outer side of the sleeve post (602) and the sliding post (603).

7. A sensor with a surface hardness protective coating according to claim 1, characterized in that: The inner bottom surface of the outer shell (1) is provided with a cleaning mechanism (7), the cleaning mechanism (7) includes a support column (701), and the upper end of the support column (701) is connected to a second connecting rod (702).

8. A sensor with a surface hardness protective coating according to claim 7, characterized in that: The outer ring surface of the second connecting rod (702) is fitted with a cleaning belt (703), and the outer ring surface of one end of the second connecting rod (702) is fitted with a track (704).

9. A sensor with a surface hardness protective coating according to claim 1, characterized in that: The inner bottom surface of the outer shell (1) is connected to a second bracket (705), and a second micro motor (706) is installed in the mounting groove of the second bracket (705). The outer ring surface of the output end of the second micro motor (706) is connected to the inner ring surface of the track (704).

10. A sensor with a surface hardness protective coating according to claim 8, characterized in that: The inner bottom surface of the outer casing (1) is provided with a blower mechanism (8), the blower mechanism (8) includes a fan (801), and the output end of the fan (801) is connected to a blower head (802).

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