Fingerprint identification lock for enterprise attendance

Abstract

The invention relates to the technical field of locks, in particular to a fingerprint recognition lock for enterprise attendance, which comprises a main lock, an auxiliary lock, a fingerprint recognition module and a spring bolt, and further comprises an energy storage assembly, a rotating assembly and a pressing assembly, the spring bolt is connected with the energy storage assembly, and the energy storage assembly is driven to store energy when the spring bolt moves back and forth; a fingerprint recognition module is fixedly installed on the main lock, an annular film is rotatably installed at the top end of the fingerprint recognition module, a rotating assembly is connected to the annular film, and after the spring bolt moves by set times, the energy storage assembly drives the rotating assembly to drive the annular film to rotate by a set angle. The main lock is connected with a pressing assembly matched with the annular film. According to the invention, after the spring bolt moves for set times, the film on the fingerprint identification surface is replaced, so that the accuracy of fingerprint identification is improved.

Description

Technical Field

[0001] This invention relates to the field of lock technology, specifically to a fingerprint recognition lock for corporate attendance. Background Technology

[0002] The basic structure of a smart lock uses a motor to drive a mechanical lock cylinder to complete the manual turning of the key. Smart locks combine traditional door locks with electronic information technology, biometric technology, and the Internet of Things (IoT). They integrate numerous technological achievements of humankind, incorporating embedded processors and intelligent monitoring systems, greatly improving the efficiency of opening and closing doors, while also enhancing door security alarms and other aspects.

[0003] Due to technological advancements, smart fingerprint locks are becoming increasingly widespread. These locks are no longer limited to homes but are increasingly being used in businesses and factories. Companies use fingerprint recognition to track employee attendance, providing both security and convenience for managers and attendance checks. However, while smart fingerprint locks offer security and convenience, they also present some challenges. For example, fingerprint images can be affected by humidity, scratches, or contamination, leading to unsuccessful fingerprint recognition or errors. Additionally, fingerprint residue on the image processing surface can hinder subsequent fingerprint recognition. Currently, multiple fingerprint registration methods are commonly used to address the accuracy issue, but this doesn't fundamentally solve the problem. Therefore, there is an urgent need to design a fingerprint recognition lock specifically for enterprise attendance tracking. Summary of the Invention

[0004] The purpose of this invention is to provide a fingerprint recognition lock for enterprise attendance, which solves the problem that due to the large turnover of employees and the continuous accumulation of fingerprints, fingerprint imprints remain on the surface of the fingerprint recognition area, making subsequent fingerprint recognition inaccurate. By moving the lock tongue a set number of times, the fingerprint recognition surface is replaced, thereby improving the accuracy of fingerprint recognition.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A fingerprint recognition lock for enterprise attendance includes a main lock, a secondary lock, a fingerprint recognition module, and a bolt. It also includes an energy storage component, a rotating component, and a clamping component. The energy storage component is connected to the bolt. During lock opening and closing, the reciprocating movement of the bolt stores energy in the energy storage component. An annular membrane is rotatably mounted on the top of the fingerprint recognition module. The rotating component is connected to the annular membrane. After the bolt moves a set number of times, the energy storage component stores energy and drives the rotating component to rotate, thereby rotating the annular membrane by a set angle to replace the membrane in the fingerprint recognition area. A clamping component is connected to the main lock, cooperating with the annular membrane. When the rotating component rotates, it also drives the annular membrane to rotate. Through cooperation with the clamping component, the annular membrane is cleaned, facilitating more accurate recognition the next time. The selected annular membrane is made of polyethylene terephthalate and AGC glass, which has advantages such as high hardness, high transparency, scratch resistance, cut resistance, and compression resistance.

[0007] When the fingerprint recognition unlocks the door, the reciprocating movement of the bolt causes the energy storage component to store energy. When the lock is opened and closed a specified number of times, the energy storage component reaches its limit and releases energy to drive the rotating component to rotate. Since the rotating component is equipped with an annular membrane, the annular membrane rotates under the action of the rotating component, thereby realizing the replacement of the fingerprint recognition module membrane.

[0008] To achieve energy storage and ultimately release, the energy storage component includes a rack, a coil spring, a ring gear, and a limiting mechanism. A rack is mounted on the latch, and a ring gear, which meshes with the rack, is rotatably mounted inside the main lock. A coil spring is fixedly mounted inside the ring gear, with its two ends fixed to the ring gear and the inner wall of the main lock, respectively. A limiting mechanism connects the ring gear and the rack. When the rack translates, the limiting mechanism drives the ring gear to rotate, preventing the ring gear from reversing. Through the reciprocating movement of the latch, the energy storage component... The rack drives the ring gear to rotate through the limiting mechanism, which in turn causes the coil spring to store energy. In order to keep the coil spring fully charged and prevent the rack from driving the ring gear to rotate in reverse when the lock tongue moves back and forth, the limiting mechanism is used to limit the ring gear to rotate only clockwise. When the lock is switched on and off a specified number of times, the limiting mechanism releases the limiting mechanism on the ring gear. At this time, the coil spring is fully charged and drives the ring gear to rotate counterclockwise, which in turn drives the rotating component to rotate. Since the limiting mechanism has released the limiting mechanism on the ring gear at this time, the limiting mechanism will not affect the counterclockwise rotation of the ring gear.

[0009] The limiting mechanism mainly includes a full gear and an incomplete gear. The full gear is rotatably mounted on the main lock and meshes with a rack. A rotating shaft is installed at the center of the full gear, and an incomplete gear is mounted on the rotating shaft and meshes with a ring gear. The purpose of the incomplete gear is to prevent the rack from moving when the coil spring drives the ring gear to rotate counterclockwise. The rotating shaft and the incomplete gear are connected by a one-way bearing. The purpose of the one-way bearing is that when the lock tongue is unlocked, the full gear rotates clockwise and drives the incomplete gear to rotate clockwise. When the lock tongue is locked, the full gear rotates counterclockwise under the action of the rack. Due to the action of the one-way bearing, the incomplete gear does not follow the full gear to rotate counterclockwise, preventing the incomplete gear from rotating counterclockwise. Since the incomplete gear meshes with the ring gear, it affects the energy storage of the coil spring. In order to limit the ring gear from driving the incomplete gear to rotate in reverse during the rotation process, a pawl that cooperates with the incomplete gear is installed on the side wall of the main lock to limit the rotation direction of the incomplete gear.

[0010] The reciprocating movement of the latch allows the energy storage component to store energy, which then drives the rotating component to rotate, thus changing the fingerprint membrane. Therefore, the rotating component mainly includes a drive sprocket, a driven sprocket, a chain, a hollow shaft, and a rotating gear. A hollow shaft is rotatably mounted on the main lock, and a ring gear is fixedly mounted on the hollow shaft. One end of a coil spring is fixed to the main lock, and the other end is fixed to the inner wall of the hollow shaft, thereby storing energy in the coil spring and driving the ring gear to rotate. A drive sprocket is rotatably mounted on the hollow shaft, and a driven sprocket is rotatably mounted on the main lock. Both the drive and driven sprockets are connected to a chain, and a rotating gear meshing with the chain is installed below the chain. The chain not only drives the rotating gear to rotate for membrane changing but also increases resistance when the fingerprint lock is forcibly disassembled. Furthermore, the chain design allows the latch to move smoothly. The rotating gear is located below the ring membrane, and two one-way bearings are fixedly mounted on the hollow shaft. Furthermore, the drive sprocket is mounted on a one-way bearing. The purpose of the one-way bearing is that when the full gear drives the incomplete gear to rotate clockwise, it in turn drives the ring gear to rotate clockwise. Due to the function of the one-way bearing, the drive sprocket does not follow the ring gear to rotate clockwise. When the coil spring reaches its limit, due to the function of the hollow shaft, the coil spring drives the hollow shaft, the ring gear on the hollow shaft, and the drive sprocket to rotate counterclockwise. At the same time, the one-way bearing also prevents the ring gear from driving the driven sprocket to rotate clockwise during the coil spring's energy storage process, which would contradict the purpose of this invention. Therefore, the coil spring stores energy through the reciprocating movement of the locking tongue. After the locking tongue reaches the set number of movements, the coil spring reaches its limit and drives the drive sprocket, the driven sprocket, the chain, and the rotating gear to rotate, causing the ring membrane on the rotating gear to rotate, thereby changing the membrane in the fingerprint recognition area and improving the accuracy of fingerprint recognition.

[0011] Because the ring-shaped membrane needs to rotate on the fingerprint recognition area for replacement, it directly contacts the fingerprint recognition area during the replacement process, which will cause wear to the fingerprint recognition area and the ring-shaped membrane, and increase the friction during replacement. Therefore, the ring-shaped membrane not only needs to rotate, but also needs to rotate up and down during replacement to reduce wear on the ring-shaped membrane and the fingerprint recognition area. Therefore, a mechanical structure with internal thread and lead screw can be selected to achieve spiral lifting. However, the structure with internal thread and lead screw can achieve the lifting of the ring-shaped membrane, but when the ring-shaped membrane reaches a certain height, it cannot be lowered, and the replacement process of the fingerprint recognition area cannot be completed.

[0012] Preferably, a sleeve is installed on the fingerprint recognition module, and a rotating gear is fixedly installed on the outer wall of the sleeve. A main mounting seat is rotatably installed on the upper end of the sleeve. A reciprocating thread is formed on the outer circumference of the upper end of the sleeve, and the inner wall of the main mounting seat cooperates with the reciprocating thread. In order to enable the main mounting seat to not only rotate but also drive the annular membrane to rotate up and down, two limiting rods are symmetrically installed on the upper end of the main mounting seat. The ends of the limiting rods are fixedly connected to the main lock. A secondary mounting seat is rotatably installed on the inner wall of the main mounting seat. The bottom end of the secondary mounting seat is symmetrically provided with two... There is a second limiting rod, which is connected to the sleeve. The annular film is fixedly installed on the secondary mounting base. The second limiting rod is used to limit the up and down movement distance of the annular film and can also drive the annular film to rotate up and down when rotating. Since the annular film is in contact with the surface of the fingerprint recognition module for a long time before the film is replaced, it will form a strong adsorption force. Therefore, a main mounting base and a secondary mounting base are set to facilitate the up and down rotation of the annular film when the film is replaced, reduce friction, and the annular film is installed in the secondary mounting base to prevent the annular film from moving back and forth when the fingerprint is recognized, which would affect the fingerprint recognition of the employee.

[0013] To prevent fingerprint residue from affecting the accuracy of fingerprint recognition for subsequent users, the fingerprint recognition area is replaced with a new membrane. If the annular membrane isn't cleaned regularly, fingerprints will accumulate around its circumference over time. Therefore, a clamping assembly is essential. This assembly includes a brush, a piston cylinder, a piston rod, a spring, and an air passage. The piston cylinder is fixedly installed inside the main lock, positioned above the annular membrane. A piston rod is movably mounted inside the piston cylinder, and a brush that cooperates with the annular membrane is fixedly installed at the bottom of the piston rod. A spring connects the top of the piston rod to the inner wall of the piston cylinder top. The up-and-down rotation of the annular membrane causes the brush to rotate, which in turn moves the piston rod. The piston cylinder rotates up and down inside to better clean the surface of the annular membrane and to press the membrane firmly during employee fingerprint recognition. Therefore, a circular hole is opened on the right side wall of the top of the piston cylinder, and a one-way air inlet valve is installed in the circular hole. A gas pipe leading to the brush is installed on the left side wall of the top of the piston cylinder, and a one-way exhaust valve is installed in the gas pipe. When the piston rod moves downward, gas enters the piston cylinder through the small hole. When the piston rod moves upward, gas is discharged through the pipe. The bottom end of the gas pipe is at a 45° angle to the annular membrane to prevent particulate matter from remaining on the surface of the annular membrane. The arrangement of the gas pipe and the brush achieves the cleaning of the surface of the annular membrane and avoids inaccurate fingerprint recognition due to fingerprint superposition and fingerprint residue.

[0014] Because the annular membrane rotates up and down, it causes the brush to rotate up and down as well, which can damage the annular membrane and deform the brush. Therefore, a support block is provided on the brush. The support block is located above the sub-mounting seat. The distance from the support block to the annular membrane is less than the distance from the limiting rod to the annular membrane, thus providing support. A brush head is provided on the brush. The brush head is located above the annular membrane and is used to clean the surface of the annular membrane. When the sub-mounting seat drives the annular membrane to rotate up and down, the sub-mounting seat drives the support block to rotate up and down, reducing the force on the brush head and thus reducing the friction between the brush head and the annular membrane, thereby protecting the annular membrane and the brush head.

[0015] To further improve the accuracy of fingerprint recognition and ensure a tight fit between the annular film and the fingerprint recognition area during fingerprint recognition, a second spring is provided in the fingerprint recognition area. The fingerprint recognition area is elastically connected to the fingerprint recognition module through the second spring. During the pressing process, the fingerprint recognition area is compressed and lowered due to the action of the second spring. To prevent deformation of the annular film during pressing, the height of the fingerprint recognition area is set to be slightly higher than the surface of the fingerprint recognition module by about 1mm. A fixing block corresponding to the brush head is fixedly installed on the fingerprint recognition module, and the height of the fixing block is less than 1mm. This achieves a tight fit between the annular film and the fingerprint recognition area while protecting the annular film from damage.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The purpose is to solve the problem of inaccurate fingerprint recognition for subsequent personnel in enterprises due to the large number of employees, fingerprint overlap, and fingerprint residue. Therefore, a fingerprint recognition lock for enterprise attendance has been designed. This invention uses a lock tongue to move a set number of times, after which an energy storage component drives a rotating component to rotate, thereby rotating the annular membrane by a set angle to replace the membrane in the fingerprint recognition area. The annular membrane and the pressing component work together to make the replacement of the membrane in the fingerprint recognition area more stable, thereby improving fingerprint accuracy.

[0018] 2. The main mounting base and the auxiliary mounting base designed in this invention, along with the reciprocating threads, cooperate to achieve the replacement of the film in the fingerprint recognition area. At the same time, the main mounting base and the auxiliary mounting base drive the annular film to rotate up and down, reducing the friction between the fingerprint recognition area and the annular film during film replacement, thereby protecting the surface of the annular film from damage. A support block is provided on the brush at the position corresponding to the auxiliary mounting base, which also plays a role in protecting the annular film and preventing the fingerprint recognition effect from being affected by wear on the annular film.

[0019] 3. The limiting mechanism and ratchet designed in this invention aim to limit the rotation direction of the ring gear and the incomplete gear. This ensures that during the energy storage process, the ring membrane does not rotate with the energy storage component due to the setting of the limiting mechanism. When the energy storage component is fully charged, the ratchet restricts the rotation of the incomplete gear, while also not affecting the rotation of the rotating component that drives the ring membrane to rotate. This enables the replacement of the membrane in the fingerprint recognition area and improves the accuracy of fingerprint recognition. Attached Figure Description

[0020] Figure 1 This is a partial structural diagram of the main lock of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the energy storage component and the rotating component of the present invention when they are engaged.

[0023] Figure 4 For the present invention Figure 3 Rear view;

[0024] Figure 5 For the present invention Figure 4 Sectional view of AA;

[0025] Figure 6 For the present invention Figure 3 Side view;

[0026] Figure 7This is a schematic diagram of the structure of the present invention when connecting full gears, incomplete gears, and ring gears;

[0027] Figure 8 This is a schematic diagram of the structure of one-way bearing 1 and one-way bearing 2 of the present invention;

[0028] Figure 9 For the present invention Figure 5 Enlarged view of part A in the middle.

[0029] In the diagram: 1. Secondary lock; 2. Main lock; 3. Fingerprint recognition module; 301. Fingerprint recognition area; 302. Spring 2; 303. Fixing block; 304. Fingerprint recognition button; 4. Lock tongue; 5. Energy storage component; 501. Rack; 502. Ring gear; 503. Coil spring; 504. Limiting mechanism; 5041. Full gear; 5042. Rotating shaft; 5043. Incomplete gear; 5044. One-way bearing 1; 5045. Pawl; 6. Rotating component; 601. Hollow shaft; 602. Main... 603. Driven sprocket; 604. Chain; 605. Rotating gear; 606. One-way bearing II; 7. Clamping assembly; 701. Piston cylinder; 702. Piston rod; 703. Brush; 7031. Support block; 7032. Brush head; 704. Spring I; 705. One-way air intake valve; 706. Air passage; 707. One-way exhaust valve; 8. Annular diaphragm; 9. Sleeve; 10. Main mounting base; 11. Reciprocating thread; 12. Limiting rod I; 13. Secondary mounting base; 14. Limiting rod II. Detailed Implementation

[0030] Please see Figures 1 to 9 This invention provides a fingerprint recognition lock for enterprise attendance, the technical solution of which is as follows:

[0031] According to the reference Figure 1 , Figure 2 A fingerprint recognition lock for enterprise attendance includes an energy storage component 5, a rotating component 6, a limiting component, and a pressing component 7. The energy storage component 5 is connected to the latch 4. The reciprocating movement of the latch 4 drives the energy storage component 5 to store energy. A fingerprint recognition module 3 is fixedly installed on the main lock 2, and an annular membrane 8 is rotatably installed on the top of the fingerprint recognition module 3. The rotating component 6 is connected to the annular membrane 8 and the energy storage component 5. A limiting mechanism 504 is connected between the energy storage component 5 and the latch 4. The limiting mechanism 504 is used to limit the rotation direction of the energy storage component 5. When the latch 4 has been opened and closed a specified number of times, the energy storage component 5 reaches its energy storage limit. The energy storage component 5 releases energy to drive the rotating component 6 to rotate, and drives the annular membrane 8 to rotate, thereby changing the membrane of the fingerprint recognition area 301.

[0032] According to the reference Figure 3The energy storage component 5 includes a limiting mechanism 504 and a rack 501. The limiting mechanism 504 includes a full gear 5041, an incomplete gear 5043, and a one-way bearing 5044. The rack 501 is fixedly mounted on the latch 4, and the full gear 5041 is rotatably mounted on the main lock 2, with the full gear 5041 meshing with the rack 501. A rotating shaft 5042 is fixedly mounted at the axis of the full gear 5041. The incomplete gear 5043 is rotatably connected to the full gear 5041 via the rotating shaft 5042. The module of the full gear 5041 is equal to the module of the incomplete gear 5043, and the pressure angle of the full gear 5041 is equal to the pressure angle of the incomplete gear 5043. To prevent the incomplete gear 5043 from affecting the rotation of the energy storage component 5 when it releases energy, the incomplete gear 5043 is used. Furthermore, after the locking tongue 4 moves a specified number of times, the incomplete gear 5043 rotates exactly three-quarters of a turn. Therefore, the incomplete gear 5043 is designed to have teeth only on three-quarters of a turn. The rotating shaft 5042 is connected to the incomplete gear 5043 through a one-way bearing 5044. Under the action of the rack 501, when the full gear 5041 rotates clockwise, it drives the incomplete gear 5043 to rotate clockwise. When the full gear 5041 rotates counterclockwise, due to the action of the one-way bearing 5044, the incomplete gear 5043 does not follow the full gear 5041 to rotate counterclockwise, preventing the counterclockwise rotation of the incomplete gear 5043 from affecting the energy storage component 5. A pawl 5045 is fixedly installed on the side wall of the main lock 2 to prevent the incomplete gear 5043 from reversing during the rotation of the energy storage component 5.

[0033] According to the reference Figure 4To enable the energy storage component 5 to store and release energy, the energy storage component 5 also includes a coil spring 503, a ring gear 502, a hollow shaft 601, and a one-way bearing 606. The ring gear 502 is rotatably mounted inside the main lock 2, and it meshes with the incomplete gear 5043. The module of the ring gear 502 is set to be equal to the module of the incomplete gear 5043, the addendum coefficient of the ring gear 502 is equal to the addendum coefficient of the incomplete gear 5043, and the pitch circle diameter of the ring gear 502 is larger than that of the incomplete gear 5043. The hollow shaft 601 is rotatably mounted on the main lock 2, and the ring gear 502 is fixedly mounted on the hollow shaft 601. A coil spring 503 is fixedly mounted on the inner wall of the hollow shaft 601, with one end fixed to the main lock 2 and the other end fixed to the inner wall of the hollow shaft 601. Therefore, the ring gear... 502, hollow shaft 601, and coil spring 503 are all on the same axis. The coil spring 503 stores energy to drive the ring gear 502 and hollow shaft 601 to rotate. A one-way bearing 606 is fixedly installed on the hollow shaft 601, and the rotating component 6 is installed on the one-way bearing 606. When the full gear 5041 drives the incomplete gear 5043 to rotate clockwise, it in turn drives the ring gear 502, hollow shaft 601, and coil spring 503 on the hollow shaft 601 to rotate clockwise, so that the coil spring 503 stores energy. Due to the function of the one-way bearing 606, during the energy storage process of the coil spring 503, the rotating component 6 and the annular membrane 8 do not rotate with the coil spring 503 and the ring gear 502. When the coil spring 503 is fully charged and drives the hollow shaft 601 to rotate, the rotating component 6 and the annular membrane 8 will rotate with the coil spring 503, thereby realizing the replacement of the membrane in the fingerprint recognition area 301.

[0034] According to the reference Figure 7 , Figure 8To better coordinate with the energy storage component 5 and achieve the replacement of the fingerprint recognition area 301 after the latch 4 moves a specified number of times, a rotating component 6 is provided. The rotating component 6 includes a drive sprocket 602, a driven sprocket 603, a chain 604, and a rotating gear 605. The drive sprocket 602 is mounted on the hollow shaft 601 and is mounted on a one-way bearing 606. The driven sprocket 603 is rotatably mounted on the main lock 2. The module of the drive sprocket 602 is... The module of the driven sprocket 602 is equal to that of the driven sprocket 603. The pitch circle diameter of the driving sprocket 602 is equal to that of the driven sprocket 603. The addendum coefficient of the driving sprocket 602 is equal to that of the driven sprocket 603. The driving sprocket 602 and the driven sprocket 603 are connected to a chain 604. Therefore, the rotation of the driven sprocket 603 drives the driven sprocket 603 and the chain 604 to rotate. A rotating gear 605 is installed below the chain 604 and meshes with the chain 604. Located below the annular diaphragm 8, the drive sprocket 602 drives the driven sprocket 603 and chain 604 to rotate, which in turn drives the rotating gear 605 to rotate, thus rotating the annular diaphragm 8. During the locking and unlocking process, the locking tongue 4 is also the process of the coil spring 503 storing energy. During this process, the annular diaphragm 8 does not perform diaphragm replacement. Only when the coil spring 503 reaches its limit after the locking tongue 4 has moved back and forth a specified number of times does the annular diaphragm 8 perform diaphragm replacement. Therefore, a one-way bearing 606 is provided. During the energy storage process, the coil spring 503 rotates clockwise due to the meshing of the incomplete gear 5043 and the ring gear 502. Due to the setting of the one-way bearing 606, the drive sprocket 602 does not rotate with the ring gear 502 and the coil spring 503. When the coil spring 503 reaches its limit and drives the hollow shaft 601 and the ring gear 502 to rotate counterclockwise, it will also drive the drive sprocket 602 to rotate, thereby driving the rotating component 6 and the annular membrane 8 to rotate, thus realizing the mold changing.

[0035] According to the reference Figure 5 , Figure 6To enable film replacement in the fingerprint recognition area 301, the rotating assembly 6 further includes a sleeve 9, a main mounting base 10, a secondary mounting base 13, a first limiting rod 12, and a second limiting rod 14. The sleeve 9 is mounted on the fingerprint recognition module 3, and the rotating gear 605 is fixedly mounted on the outer wall of the sleeve 9. The main mounting base 10 is rotatably mounted on the upper end of the sleeve 9. A reciprocating thread 11 is formed on the outer circumference of the upper end of the sleeve 9, and the inner wall of the main mounting base 10 cooperates with the reciprocating thread 11 to drive the ring... The annular membrane 8 rotates up and down during membrane replacement to prevent excessive friction between the annular membrane 8 and the fingerprint recognition module 3, which could damage the annular membrane 8. Therefore, two limiting rods 12 are symmetrically installed on the upper end of the main mounting base 10. The ends of the limiting rods 12 are fixedly connected to the main lock 2. A secondary mounting base 13 is rotatably installed on the inner wall of the main mounting base 10. Two limiting rods 14 are symmetrically provided at the bottom end of the secondary mounting base 13, and the limiting rods 14 are connected to the sleeve 9 to limit the vertical rotation distance of the annular membrane 8.

[0036] According to the reference Figure 5 , Figure 9 To avoid inaccurate fingerprint recognition for subsequent users due to residual fingerprints from previous users, the fingerprints in the fingerprint recognition area 301 need to be cleaned after the membrane is replaced to facilitate the next fingerprint recognition. Therefore, a pressing assembly 7 is designed. The pressing assembly 7 includes a brush 703, a piston cylinder 701, a piston rod 702, a spring 704, and an air passage 706. The piston cylinder 701 is fixedly installed at the top of the inner wall of the main lock 2. The piston rod 702 is movably installed on the inner wall of the piston cylinder 701. A useful... To prevent the brush 703 from damaging the annular membrane 8 when squeezed, and to avoid deformation due to excessive force affecting the cleaning effect, the brush 703 includes a support block 7031 and a brush head 7032. The support block 7031 is located above the sub-mounting base 13, and the brush 703 is located above the annular membrane 8. When the sub-mounting base 13 drives the annular membrane 8 to rotate up and down, the annular membrane 8 is cleaned by squeezing the support block 7031, reducing the force on the brush head 7032.

[0037] According to the reference Figure 5 , Figure 9An air passage 706 leading to a brush 703 is installed on the left side wall of the top of the piston cylinder 701, and a one-way exhaust valve 707 is installed on the air passage 706. A round hole is opened on the right side wall of the top of the piston cylinder 701, and a one-way intake valve 705 is installed on the round hole. By rotating the annular membrane 8 up and down, the piston rod 702 moves up and down inside the piston cylinder 701 under the action of the spring 704. Gas enters the piston cylinder 701 through the round hole and is discharged outward through the air passage 706, blowing out the tiny particles on the surface of the annular membrane 8, thereby further cleaning the annular membrane 8 and improving the accuracy of fingerprint recognition.

[0038] According to the reference Figure 9 To ensure a tight fit between the annular membrane 8 and the fingerprint recognition area 301, thereby improving fingerprint recognition accuracy, a fingerprint recognition area 301 is installed below the fingerprint recognition button 304. A second spring 302 is provided in the fingerprint recognition area 301, and the fingerprint recognition area 301 is elastically connected to the fingerprint recognition module 3 through the second spring 302. The elastic coefficient of the second spring 302 should not be too small. To prevent deformation of the annular membrane 8 when the fingerprint recognition area 301 is pressed, the fingerprint recognition area 301 is set to be slightly higher than the surface of the fingerprint recognition module 3. A fixing block 303 corresponding to the brush head 7032 is fixedly installed on the fingerprint recognition module 3, and the height of the fixing block 303 is less than that of the fingerprint recognition area 301.

[0039] When the latch 4 is unlocked, the rack 501 on the latch 4 drives the full gear 5041 to rotate clockwise, which in turn drives the incomplete gear 5043 to rotate. Since the incomplete gear 5043 meshes with the ring gear 502 and is mounted on the hollow shaft 601, the rotation of the incomplete gear 5043 drives the ring gear 502 to rotate, and the ring gear 502 to rotate clockwise, causing the coil spring 503 inside the ring gear 502 to rotate clockwise, thus storing energy in the coil spring 503. Due to the action of the one-way bearing 606, the clockwise rotation of the hollow shaft 601 does not drive the drive sprocket 602 to rotate. When the latch 4 is closed, the rack 501 on the latch 4 drives the full gear 5041 to rotate counterclockwise. Due to the action of the one-way bearing 5044, the incomplete gear 5043 does not follow the full gear 5041 to rotate counterclockwise until the next time the latch 4 is unlocked, starting the next working cycle.

[0040] After the locking tongue 4 moves a set number of times, the coil spring 503 reaches its limit, and the incomplete gear 5043 rotates three-quarters of a turn. At this time, the coil spring 503 drives the hollow shaft 601 and the ring gear 502 on the hollow shaft 601 to rotate counterclockwise, and drives the driving sprocket 602, the driven sprocket 603, the chain 604, the rotating gear 605 and the ring membrane 8 on the rotating gear 605 to rotate, thus completing the replacement of the membrane in the fingerprint recognition area 301.

[0041] It will be understood by those skilled in the art that various changes and modifications can be made to the embodiments without departing from the principles of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fingerprint recognition lock for enterprise attendance, comprising a secondary lock (1), a main lock (2), a fingerprint recognition module (3), and a bolt (4), characterized in that: It also includes an energy storage component (5), a rotating component (6), a pressing component (7), and an annular membrane (8). The lock tongue (4) is connected to the energy storage component (5), and the lock tongue (4) drives the energy storage component (5) to store energy when it moves back and forth. The main lock (2) is fixedly installed with a fingerprint recognition module (3). The top of the fingerprint recognition module (3) is rotatably installed with an annular membrane (8). The annular membrane (8) is connected to the rotating component (6). After the lock tongue (4) moves a set number of times, the energy storage component (5) drives the rotating component (6) to drive the annular membrane (8) to rotate a set angle. The main lock (2) is connected to a pressing component (7) that presses the annular membrane (8) onto the fingerprint recognition module (3).

2. The fingerprint recognition lock for enterprise attendance as described in claim 1, characterized in that: The energy storage component (5) includes a rack (501), a ring gear (502), a coil spring (503), and a limiting mechanism (504). The rack (501) is fixedly installed on the latch (4). The ring gear (502) that cooperates with the rack (501) is rotatably installed inside the main lock (2), and the ring gear (502) is connected to the rotating component (6). The coil spring (503) is connected inside the ring gear (502), and the two ends of the coil spring (503) are fixedly connected to the main lock (2) and the ring gear (504) respectively. 2) A limiting mechanism (504) is provided between the ring gear (502) and the rack (501). When the rack (501) translates, it drives the ring gear (502) to rotate through the limiting mechanism (504). The limiting mechanism (504) can limit the ring gear (502) to rotate only clockwise. After the rack (501) translates a set number of times, the limiting mechanism (504) releases the limiting on the ring gear (502), and the coil spring (503) drives the ring gear (502) to rotate counterclockwise and drives the rotating component (6).

3. A fingerprint recognition lock for enterprise attendance according to claim 2, characterized in that: The limiting mechanism (504) includes a full gear (5041), a rotating shaft (5042), an incomplete gear (5043), a one-way bearing (5044), and a pawl (5045). The full gear (5041) is rotatably mounted on the main lock (2), and the full gear (5041) meshes with the rack (501). The rotating shaft (5042) is fixedly mounted at the axial position of the full gear (5041). An incomplete gear (5043) that meshes with the ring gear (502) is mounted on the rotating shaft (5042). The rotating shaft (5042) and the incomplete gear (5043) are connected by a one-way bearing (5044). A pawl (5045) that cooperates with the incomplete gear (5043) is mounted on the side wall of the main lock (2), and the pawl (5045) is used to restrict the ring gear (502) from driving the incomplete gear (5043) to reverse.

4. A fingerprint recognition lock for enterprise attendance according to claim 3, characterized in that: The rotating assembly (6) includes a hollow shaft (601), a drive sprocket (602), a driven sprocket (603), a chain (604), a rotating gear (605), and a one-way bearing (606). The hollow shaft (601) is rotatably mounted on the main lock (2), and the ring gear (502) is fixedly mounted on the hollow shaft (601). The drive sprocket (602) is coaxially rotatably mounted on the hollow shaft (601). A driven sprocket (603) is rotatably mounted on the main lock (2). A chain (604) is connected to both the driving sprocket (602) and the driven sprocket (603). A rotating gear (605) that meshes with the chain (604) is connected to the annular diaphragm (8). A one-way bearing (606) is fixedly mounted on the hollow shaft (601), and the inner ring of the driving sprocket (602) is fixedly connected to the one-way bearing (606).

5. A fingerprint recognition lock for enterprise attendance according to claim 4, characterized in that: A sleeve (9) is rotatably mounted on the fingerprint recognition module (3), and a rotating gear (605) is fixedly mounted on the outer side wall of the bottom end of the sleeve (9). A main mounting seat (10) is rotatably mounted on the upper end of the sleeve (9). A reciprocating thread (11) is provided on the outer circumference of the upper end of the sleeve (9), and the inner wall of the main mounting seat (10) cooperates with the reciprocating thread (11). A limiting rod (12) that cooperates with the main mounting seat (10) is mounted on the main lock (2). A secondary mounting seat (13) is rotatably mounted on the inner wall of the main mounting seat (10). Two limiting rods (14) are symmetrically provided at the bottom end of the secondary mounting seat (13), and the limiting rods (14) are connected to the sleeve (9). The annular membrane (8) is fixedly mounted on the secondary mounting seat (13).

6. A fingerprint recognition lock for enterprise attendance according to claim 5, characterized in that: The clamping assembly (7) includes a piston cylinder (701), a piston rod (702), a brush (703), a spring (704), a one-way air intake valve (705), an air passage (706), and a one-way exhaust valve (707). The piston cylinder (701) is fixedly installed inside the main lock (2). The piston cylinder (701) is located above the annular diaphragm (8). The piston rod (702) is movably installed inside the piston cylinder (701). The bottom end of the piston rod (702) A brush (703) that cooperates with the annular membrane (8) is fixedly installed. A spring (704) is connected to the top of the piston rod (702) and the inner wall of the top of the piston cylinder (701). A round hole is opened on the right side of the top of the piston cylinder (701), and a one-way air intake valve (705) is installed on the round hole. An air passage (706) leading to the brush (703) is installed on the left side of the top of the piston cylinder (701), and a one-way exhaust valve (707) is installed on the air passage (706).

7. A fingerprint recognition lock for enterprise attendance according to claim 6, characterized in that: The brush (703) includes a support block (7031) and a brush head (7032). The support block (7031) is located above the sub-mount (13) to support the brush (703). The distance from the support block (7031) to the annular membrane (8) is less than the distance from the second limiting rod (14) to the annular membrane (8). The brush head (7032) is located above the annular membrane (8).

8. A fingerprint recognition lock for enterprise attendance according to claim 6, characterized in that: A fingerprint recognition area (301) is movably installed on the fingerprint recognition module (3). A second spring (302) is installed on the fingerprint recognition area (301). The fingerprint recognition area (301) is elastically connected to the fingerprint recognition module (3) through the second spring (302). The maximum height of the fingerprint recognition area (301) is located at the top of the fingerprint recognition module (3) by 1 mm. A fixing block (303) corresponding to the brush head (7032) is fixedly installed on the fingerprint recognition module (3). The height of the fixing block (303) is less than 1 mm.

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