Method for improving the tensile strength of a fingerprint padlock
By using a stainless steel latch and motor rotation mechanism, combined with the design of springs and torsion springs, the problem of easy damage to the latch of fingerprint padlocks under high pulling force is solved, enabling normal opening of the lock and extending its service life.
Patent Information
- Application Number
- CN202311487334.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-09
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2043-11-09
AI Technical Summary
The bolt of existing fingerprint padlocks is prone to dents when subjected to large pulling force, which prevents the motor from driving the bolt to rotate, affecting the unlocking effect and resulting in a poor user experience.
The lock tongue is made of stainless steel, and the motor drives the pusher and lock tongue to rotate. The locking and unlocking actions are achieved by the thrust of springs and torsion springs. At the same time, the high hardness of stainless steel is used to improve the tensile strength and enhance the structural stability of the lock tongue.
The tensile strength of the fingerprint padlock has been improved, ensuring that the motor can drive the bolt to rotate normally, extending the service life of the lock and enhancing the user experience.
Smart Images

Figure CN117328745B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fingerprint padlock technology, and in particular to a method for improving the tensile strength of fingerprint padlocks. Background Technology
[0002] A padlock has a locking ring or "I"-shaped metal shank on its body, known as a "lock beam," which allows the padlock to directly engage with the lock body to form a closed lock. Due to its structural characteristics, the padlock is convenient, flexible, and versatile. It can replace other locks, but other locks cannot replace the function of a padlock. It is a relatively ideal security locking device. However, a padlock must engage with the convex perforated part of the object being locked to function as a lock; it does not have the function of being able to be opened and closed from the inside or outside. Therefore, it cannot be used in certain situations, such as in places with high decorative requirements or where matching locks are required. Padlocks are classified in various ways. The size of the padlock is determined by the width of the lock body, the height of the lock beam determines its purpose, and the opening method (straight-opening, side-opening, top-opening, double-opening, etc.) determines the series of the padlock. Commonly used padlocks generally employ straight-opening and side-opening methods. A top-opening padlock is a padlock that can be pulled upwards without rotation after the key is inserted into the keyhole. This type of padlock is especially suitable for people holding infants or carrying items that should not be left unattended. A double-opening padlock requires two keys to open; it offers strong security and is suitable for situations where two people are needed to both lock the padlock and open it, such as warehouses or vaults. Currently, fingerprint padlocks on the market are limited by technological limitations.
[0003] The bolt is typically made of die-cast zinc alloy. This allows for the creation of complex shapes at a lower cost, while still achieving both locking and unlocking mechanisms. However, in actual use, it has been found that die-cast zinc alloy bolts often develop noticeable dents when the bolt is under significant tension, either at the point where it jams against the bolt or where it is compressed by the steel ball. These dents create considerable resistance, preventing the motor from driving the bolt and thus preventing the lock from opening. This gives the user the impression that the lock cannot withstand significant tension, resulting in a poor user experience. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a method to improve the tensile strength of fingerprint padlocks.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A method for improving the tensile strength of a fingerprint padlock, the fingerprint padlock comprising a lock body, a lock beam at the top of the lock body, a motor rotating mechanism inside the lock body, a pusher connected to the motor rotating mechanism, a lock tongue connected to the pusher, a slide rail inside the lock body, a steel ball inside the slide rail, the steel ball cooperating with the lock tongue, a lock beam latch on the lock beam, the steel ball cooperating with the lock beam latch, a torsion spring inside the pusher, and a spring inside the lock body, the spring cooperating with the lock beam. The method includes the following steps: the motor rotating mechanism drives the pusher, causing the pusher to rotate within a certain angle range. When the pusher rotates, the latch assembled with it also rotates. After the latch rotates to a certain angle, the lock beam pushes the steel ball to the left under the force of the spring, thus unlocking. When the motor rotates and the mechanism resets, the pusher also resets under the torque of the torsion spring, and the latch mounted on the pusher also presses the steel ball to the right. When the lock beam is pressed back into the lock hole, the latch presses the steel ball back into the lock beam position, thus completing the locking action. The latch is made of stainless steel, which is harder than zinc alloy. The latch can improve the tensile strength of the fingerprint padlock.
[0007] Preferably, a fixed shell is fixedly installed on the top of the lock body, and rectangular sliding holes are provided on both sides of the fixed shell, with rectangular rods slidably installed in each of the two rectangular sliding holes.
[0008] Preferably, the locking beam has two rectangular slots, and one end of each of the two rectangular rods is respectively engaged with the two rectangular slots.
[0009] Preferably, two fixing blocks are fixedly installed on the top inner wall of the fixing shell, and bearings are fixedly installed on the bottom of each fixing block.
[0010] Preferably, the inner rings of both bearings are fixedly mounted with screws, one end of the two screws is fixedly connected, the threads on the two screws are in opposite directions, and the two screws are threadedly connected to two rectangular rods respectively.
[0011] Preferably, one end of each of the two rectangular rods is provided with a threaded groove, and the two screws are threadedly connected to the two threaded grooves respectively.
[0012] Preferably, a drive shaft is fixedly installed at the top of the locking tongue, and one end of the drive rod extends into the fixed housing and is fixedly installed with a first bevel gear.
[0013] Preferably, a second bevel gear meshes with the first bevel gear, and the second bevel gear is fixedly sleeved on the outside of the screw. When the two rectangular rods are inserted into the two rectangular slots, the lock beam can be fixed, increasing the tensile strength of the lock beam. When the pusher rotates, it will drive the transmission shaft to rotate, the transmission shaft will drive the first bevel gear to rotate, the first bevel gear will drive the second bevel gear to rotate, and the second bevel gear will drive the screw to rotate, causing the two rectangular rods to move closer to each other, thereby causing the two rectangular rods to disengage from the two rectangular slots and releasing the fixation of the lock beam.
[0014] The beneficial effects of the method for improving the tensile strength of fingerprint padlocks described in this invention are as follows:
[0015] The motor rotation mechanism drives the pusher, which rotates within a certain angle range. When the pusher rotates, the latch assembled with it also rotates. After the latch rotates to a certain angle, the lock beam pushes the steel ball to the left under the spring force, thus unlocking. When the motor rotation mechanism resets, the pusher also resets under the torsion of the torsion spring, and the latch mounted on the pusher presses the steel ball to the right. When the lock beam is pressed back into the lock hole, the latch presses the steel ball back into the lock beam position, thus completing the locking action. The latch is made of stainless steel, which is harder than zinc alloy. The latch can improve the tensile strength of the fingerprint padlock.
[0016] When the two rectangular rods are inserted into the two rectangular slots, the lock beam can be fixed, increasing its tensile strength. When the pusher rotates, it will drive the drive shaft to rotate, which in turn drives the first bevel gear to rotate, which in turn drives the second bevel gear to rotate, which in turn drives the screw to rotate, causing the two rectangular rods to move closer to each other and thus disengage from the two rectangular slots, releasing the lock beam from its fixation.
[0017] When the bolt of this invention is made of stainless steel 303, it can withstand a lot of pressure without causing dents. This ensures that the motor rotation mechanism can drive the bolt to rotate normally, achieving smooth unlocking. This not only ensures the normal function of the lock and extends its service life, but also improves the user experience and results in better quality. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of a method for improving the tensile strength of a fingerprint padlock proposed in this invention;
[0019] Figure 2 This is a side view of the lock body and lock beam, which are part of a method for improving the tensile strength of a fingerprint padlock according to the present invention.
[0020] Figure 3 This is a three-dimensional structural diagram of the pusher, latch, and torsion spring of a method for improving the tensile strength of a fingerprint padlock proposed in this invention;
[0021] Figure 4 This is a schematic diagram of the lock body and the fixed shell structure of a method for improving the tensile strength of a fingerprint padlock proposed in this invention;
[0022] Figure 5 This invention proposes a method to improve the tensile strength of fingerprint padlocks. Figure 4 A magnified structural diagram of part A in the middle.
[0023] In the diagram: 1. Lock body; 2. Lock beam; 3. Motor rotation mechanism; 4. Pushing component; 5. Lock tongue; 6. Steel ball; 7. Lock beam latch; 8. Spring; 9. Slide rail; 10. Torsion spring; 11. Fixed shell; 12. Rectangular sliding hole; 13. Rectangular rod; 14. Rectangular groove; 15. Fixed block; 16. Bearing; 17. Screw; 18. Drive shaft; 19. First bevel gear; 20. Second bevel gear. Detailed Implementation
[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0025] Example 1
[0026] Reference Figures 1-5 A method for improving the tensile strength of a fingerprint padlock, the fingerprint padlock comprising a lock body 1, a lock beam 2 at the top of the lock body 1, a motor rotating mechanism 3 inside the lock body 1, a pusher 4 connected to the motor rotating mechanism 3, a lock tongue 5 connected to the pusher 4, a slide rail 9 inside the lock body 1, a steel ball 6 inside the slide rail 9, the steel ball 6 cooperating with the lock tongue 5, a lock beam latch 7 on the lock beam 2, the steel ball 6 cooperating with the lock beam latch 7, a torsion spring 10 inside the pusher 4, and a spring 8 inside the lock body 1, the spring 8 cooperating with the lock beam 2. The method includes the following steps: the motor rotating mechanism 3 drives the pusher 4, and the pusher 4 rotates within a certain angle range. When the pusher 4 rotates, the latch 5 assembled with the pusher 4 also rotates. After the latch 5 rotates to a certain angle, the lock beam 2 pushes the steel ball 6 to the left under the thrust of the spring 8, thus realizing the unlocking action. When the motor rotation mechanism 3 is reset, the pusher 4 is also reset under the torque of the torsion spring 10. The latch 5 installed on the pusher 4 also presses the steel ball 6 to the right. When the lock beam 2 is pressed back into the lock hole, the latch 5 presses the steel ball 6 back into the lock beam 2 to lock, thus completing the locking action. The material of the latch 5 is stainless steel 303. The hardness of stainless steel 303 is greater than that of zinc alloy. The latch 5 can improve the tensile strength of the fingerprint padlock.
[0027] In this embodiment, a fixed shell 11 is fixedly installed on the top of the lock body 1. Rectangular sliding holes 12 are provided on both sides of the fixed shell 11. Rectangular rods 13 are slidably installed in each of the two rectangular sliding holes 12. Two rectangular slots 14 are provided on the lock beam 2. One end of each of the two rectangular rods 13 is respectively engaged with one of the two rectangular slots 14. Two fixing blocks 15 are fixedly installed on the inner top wall of the fixed shell 11. Bearings 16 are fixedly installed at the bottom of each of the two fixing blocks 15. Screws 17 are fixedly installed on the inner rings of each of the two bearings 16. One end of the screw 17 is fixedly connected, the threads on the two screws 17 are turned in opposite directions, the two screws 17 are respectively threaded to the two rectangular rods 13, one end of each of the two rectangular rods 13 is provided with a threaded groove, the two screws 17 are respectively threaded to the two threaded grooves, the top of the locking tongue 5 is fixedly installed with a drive shaft 18, one end of the drive shaft 18 extends into the fixed housing 11 and is fixedly installed with a first bevel gear 19, a second bevel gear 20 meshes with the first bevel gear 19, and the second bevel gear 20 is fixedly sleeved on the outside of the screw 17;
[0028] The motor rotation mechanism 3 drives the pusher 4, which rotates within a certain angle range. When the pusher 4 rotates, the locking tongue 5, which is assembled with the pusher 4, also rotates. After the locking tongue 5 rotates to a certain angle, the lock beam 2, under the thrust of the spring 8, pushes the steel ball 6 to the left, thus realizing the unlocking action. When the motor rotation mechanism 3 resets, the pusher 4 also resets under the torque of the torsion spring 10. The locking tongue 5, which is mounted on the pusher 4, also presses the steel ball 6 to the right. When the lock beam 2 is pressed back into the lock hole, the locking tongue 5 presses the steel ball 6 back into the locking beam 2, thus completing the locking action. The material of the locking tongue 5 is stainless steel. The hardness of 303 stainless steel is greater than that of zinc alloy. The latch 5 can improve the tensile strength of the fingerprint padlock. When the two rectangular rods 13 are inserted into the two rectangular slots 14, the lock beam 2 can be fixed, increasing the tensile strength of the lock beam 2. When the pusher 4 rotates, it will drive the drive shaft 18 to rotate. The drive shaft 18 drives the first bevel gear 19 to rotate. The first bevel gear 19 drives the second bevel gear 20 to rotate. The second bevel gear 20 drives the screw 17 to rotate, causing the two rectangular rods 13 to move closer to each other, thereby causing the two rectangular rods 13 to disengage from the two rectangular slots 14 and release the lock beam 2 from fixation.
[0029] Example 2
[0030] A method for improving the tensile strength of a fingerprint padlock includes a lock body 1, a lock beam 2 at the top of the lock body 1, a motor rotation mechanism 3 inside the lock body 1, a pusher 4 connected to the motor rotation mechanism 3, a lock tongue 5 connected to the pusher 4, a slide rail 9 inside the lock body 1, a steel ball 6 inside the slide rail 9, the steel ball 6 cooperating with the lock tongue 5, a lock beam latch 7 on the lock beam 2, the steel ball 6 cooperating with the lock beam latch 7, a torsion spring 10 inside the pusher 4, and a spring 8 inside the lock body 1, the spring 8 cooperating with the lock beam 2. The method includes the following steps: the motor rotation mechanism 3 drives the pusher 4, causing the pusher 4 to rotate within a certain angle range; when the pusher 4 rotates, a torsion spring 10 is installed inside the lock body 1. The latch 5, which is paired with the lock, also rotates. When the latch 5 rotates to a certain angle, the lock beam 2 pushes the steel ball 6 to the left under the force of the spring 8, thus realizing the unlocking action. When the motor rotation mechanism 3 is reset, the pusher 4 is also reset under the torque of the torsion spring 10. The latch 5, which is installed on the pusher 4, also presses the steel ball 6 to the right. When the lock beam 2 is pressed back into the lock hole, the latch 5 presses the steel ball 6 back into the lock beam 2 to lock, thus completing the locking action. The material of the latch 5 is stainless steel 303. The hardness of stainless steel 303 is greater than that of zinc alloy. The latch 5 can improve the tensile strength of the fingerprint padlock. The lock body 1 is equipped with a position sensor, which detects the position of the lock beam 2.
[0031] In this embodiment, a fixed shell 11 is fixedly installed on the top of the lock body 1. Rectangular sliding holes 12 are provided on both sides of the fixed shell 11. Rectangular rods 13 are slidably installed in each of the two rectangular sliding holes 12. Two rectangular slots 14 are provided on the lock beam 2. One end of each of the two rectangular rods 13 is respectively engaged with one of the two rectangular slots 14. Two fixing blocks 15 are fixedly installed on the inner top wall of the fixed shell 11. Bearings 16 are fixedly installed at the bottom of each of the two fixing blocks 15. Screws 17 are fixedly installed on the inner rings of each of the two bearings 16. One end of 17 is fixedly connected, the threads on the two screws 17 are turned in opposite directions, the two screws 17 are respectively threaded to the two rectangular rods 13, one end of the two rectangular rods 13 is provided with a threaded groove, the two screws 17 are respectively threaded to the two threaded grooves, the top of the locking tongue 5 is fixedly installed with a drive shaft 18, one end of the drive shaft 18 extends into the fixed shell 11 and is fixedly installed with a first bevel gear 19, a second bevel gear 20 meshes with the first bevel gear 19, and the second bevel gear 20 is fixedly sleeved on the outside of the screw 17.
[0032] The motor rotation mechanism 3 drives the pusher 4, which rotates within a certain angle range. When the pusher 4 rotates, the locking tongue 5, which is assembled with the pusher 4, also rotates. After the locking tongue 5 rotates to a certain angle, the lock beam 2, under the thrust of the spring 8, pushes the steel ball 6 to the left, thus realizing the unlocking action. When the motor rotation mechanism 3 resets, the pusher 4 also resets under the torque of the torsion spring 10. The locking tongue 5, which is mounted on the pusher 4, also presses the steel ball 6 to the right. When the lock beam 2 is pressed back into the lock hole, the locking tongue 5 presses the steel ball 6 back into the locking beam 2, thus completing the locking action. The material of the locking tongue 5 is stainless steel. The hardness of 303 stainless steel is greater than that of zinc alloy. The latch 5 can improve the tensile strength of the fingerprint padlock. When the two rectangular rods 13 are inserted into the two rectangular slots 14, the lock beam 2 can be fixed, increasing the tensile strength of the lock beam 2. When the pusher 4 rotates, it will drive the drive shaft 18 to rotate. The drive shaft 18 drives the first bevel gear 19 to rotate. The first bevel gear 19 drives the second bevel gear 20 to rotate. The second bevel gear 20 drives the screw 17 to rotate, causing the two rectangular rods 13 to move closer to each other, thereby causing the two rectangular rods 13 to disengage from the two rectangular slots 14 and release the lock beam 2 from fixation.
[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A method for improving the tensile strength of a fingerprint padlock, characterized in that, The fingerprint padlock includes a lock body (1), a lock beam (2) at the top of the lock body (1), a motor rotating mechanism (3) inside the lock body (1), a pusher (4) connected to the motor rotating mechanism (3), a lock tongue (5) connected to the pusher (4), a slide rail (9) inside the lock body (1), a steel ball (6) inside the slide rail (9), the steel ball (6) cooperating with the lock tongue (5), a lock beam buckle (7) on the lock beam (2), the steel ball (6) cooperating with the lock beam buckle (7), a torsion spring (10) inside the pusher (4), and a spring (8) inside the lock body (1), the spring (8) cooperating with the lock beam (2). The method includes the following steps: the motor rotation mechanism (3) drives the pusher (4), and the pusher (4) rotates within a certain angle range. When the pusher (4) rotates, the lock tongue (5) assembled with the pusher (4) also rotates. When the lock tongue (5) rotates to a certain angle, the lock beam (2) pushes the steel ball (6) to the left under the thrust of the spring (8), thereby realizing the unlocking action. When the motor rotation mechanism (3) is reset, the pusher (4) is also reset under the torque of the torsion spring (10). The lock tongue (5) installed on the pusher (4) also presses the steel ball (6) to the right. When the lock beam (2) is pressed back into the lock hole, the lock tongue (5) presses the steel ball (6) back into the lock beam (2) to complete the locking action. The material of the lock tongue (5) is stainless steel 303. The hardness of stainless steel 303 is greater than that of zinc alloy. The lock tongue (5) can improve the tensile strength of the fingerprint padlock. The top of the lock body (1) is fixedly installed with a fixed shell (11), and rectangular sliding holes (12) are opened on both sides of the fixed shell (11). A rectangular rod (13) is slidably installed in each of the two rectangular sliding holes (12). The locking beam (2) has two rectangular slots (14), and one end of each of the two rectangular rods (13) is engaged with the two rectangular slots (14); Two fixing blocks (15) are fixedly installed on the top inner wall of the fixed shell (11), and bearings (16) are fixedly installed on the bottom of the two fixing blocks (15).
2. The method for improving the tensile strength of a fingerprint padlock according to claim 1, characterized in that, The inner rings of the two bearings (16) are fixedly mounted with screws (17), one end of the two screws (17) is fixedly connected, the threads on the two screws (17) are opposite, and the two screws (17) are threadedly connected to the two rectangular rods (13) respectively.
3. The method for improving the tensile strength of a fingerprint padlock according to claim 2, characterized in that, Both rectangular rods (13) have threaded grooves at one end, and the two screws (17) are threaded to the two threaded grooves respectively.
4. The method for improving the tensile strength of a fingerprint padlock according to claim 3, characterized in that, The top of the latch (5) is fixedly mounted with a drive shaft (18), and one end of the drive rod (18) extends into the fixed housing (11) and is fixedly mounted with a first bevel gear (19).
5. The method for improving the tensile strength of a fingerprint padlock according to claim 4, characterized in that, The first bevel gear (19) is meshed with a second bevel gear (20), which is fixedly sleeved on the outside of the screw (17).
Citation Information
Patent Citations
Laminated steel sheet padlock
CN1948684A
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CN210598521U
Fingerprint padlock
CN219262025U