Spring lock with ball-type unlocking structure

Abstract

The utility model discloses a kind of spring locks of ball type unlocking structure, including lock body and shell, shell includes mounting seat and outer cover;Lock body side is equipped with micro motor, mounting seat is inlaid with fingerprint module, and fingerprint module is electrically connected with micro motor;Spiral rotating head is arranged at the output end of micro motor, lock block is slidably sleeved with reset spring on the upper end of lock body, and dialing bead is arranged between lock block and rotating head;Lock head is movably arranged on the other side of lock body by spring, and lock head is clamped with lock block.The utility model relates to door lock technical field.When unlocking, after fingerprint authentication passes, micro motor drives rotating head to rotate, pushes the bottom slope of lock block by dialing bead, makes lock block slide and separate from lock head, realizes unlocking.The utility model adopts ball type transmission structure, converts motor rotary motion into lock block linear motion, avoids motor rotating head direct stress, effectively prevents rotating head fracture, improves the reliability, stability and service life of lockset.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, specifically a ball-type unlocking spring lock. Background Technology

[0002] In existing electronic spring locks, a miniature motor is typically used to directly drive the bolt or locking block for unlocking. For example, the motor output shaft is directly connected to a rotor, which rotates to move the locking block, thus unlocking the lock. Because the motor output shaft directly bears the load, especially under lock jamming or external force, the rotor is prone to breakage due to excessive torque, leading to lock failure and low reliability. Furthermore, the direct drive method suffers from problems such as high impact force, high noise, and short lifespan. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a ball-type unlocking spring lock, which solves the problems of easy breakage of the rotor and poor stability when the traditional motor is used for direct unlocking.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a ball-type unlocking spring lock, comprising a lock body and a shell, the shell comprising a mounting base and an outer cover; a micro motor is mounted on the side of the lock body, and a fingerprint module for fingerprint authentication is embedded in the middle of the mounting base, the fingerprint module being electrically connected to the micro motor; a rotating head is provided at the output end of the micro motor, and a lock block is slidably sleeved on the upper end of the lock body via a return spring; a paddle is provided between the lock block and the rotating head; a lock head is movably mounted on the other side of the lock body via a spring, and the other end of the lock head is inserted into the inner cavity of the lock body and engages with the lock block.

[0005] Preferably, the mounting base is fixedly mounted on the lock body by screws, and the outer cover covers the back of the lock body.

[0006] Preferably, a slot for the movement of the ball is provided between the mounting base and the lock body.

[0007] Preferably, the other end of the lock head has a slot for engaging with the lock block.

[0008] Preferably, the bottom of the locking block has an inclined surface that contacts the paddle.

[0009] Preferably, the rotating head is helical in shape, and the helical surface is arranged from low to high.

[0010] This utility model provides a ball-type unlocking spring lock. Compared with the prior art, it has the following advantages: This ball-type unlocking spring lock, by setting up a ball and a spiral rotating head, converts the rotational motion of the micro motor into the smooth linear motion of the lock block, avoiding the motor head directly bearing the impact force, effectively preventing the rotating head from breaking, and improving the stability and service life of the lock. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a reverse view of the structure of this utility model; Figure 3 This is a partial split view of the front of the structure of this utility model; Figure 4 This is a partial disassembly diagram of the reverse side of the structure of this utility model; Figure 5 This is a partial schematic diagram of the structure of this utility model.

[0012] In the diagram: 1. Lock body; 2. Lock cylinder; 3. Fingerprint module; 4. Outer shell; 41. Mounting base; 42. Outer cover; 5. Micro motor; 6. Rotating head; 7. Turning ball; 8. Lock block; 9. Return spring; 10. Spring. Detailed Implementation

[0013] 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.

[0014] like Figures 1 to 5 As shown, this utility model provides a technical solution: a ball-type unlocking spring lock, which mainly consists of an internal lock body 1 and an external shell 4. The lock body 1 serves as the core load-bearing structure, integrating mechanical and electronic control components. The shell 4 serves as a seal and protector, and consists of two parts: a mounting base 41 and an outer cover 42. The mounting base 41 is fixed to the front of the lock body 1 with screws, and a fingerprint module 3 is embedded in its center. The outer cover 42 covers the back of the lock body 1, forming a complete outer cover together with the mounting base 41.

[0015] The fingerprint module 3 is a highly integrated functional unit that not only includes a fingerprint sensor but also integrates a microprocessor (MCU), flash memory, and random access memory (RAM). The microprocessor is responsible for executing complex fingerprint recognition algorithms, while the flash memory is used to securely store authorized user fingerprint template data. The module is electrically connected to the micromotor 5 via a flexible printed circuit board (FPC) or wires, forming a complete authentication-execution link. This fingerprint module 3 is prior art and will not be described in detail further.

[0016] A charging port (not shown in the figure) is provided at the bottom of the lock body 1. The fingerprint module 3 is charged by inserting the matching plug. When not charging, the charging port can be sealed with a rubber plug or other sealing material to protect the internal circuitry.

[0017] On one side of the lock body 1, a micro motor 5 is installed. The micro motor 5 is controlled by the fingerprint module 3. The two are electrically connected through internal circuitry to form an authentication and drive circuit. A specially designed rotating head 6 is fixed on the output shaft of the micro motor 5. The profile of the rotating head 6 is designed as a spiral surface that gradually rises from the root to the top, similar to a section of Archimedean spiral.

[0018] At the upper part of the lock body 1, there is a lock block 8. The lock block 8 is slidably connected to the lock body 1 through a return spring 9, so that the lock block 8 can slide left and right within a certain range. The bottom of the lock block 8 is machined with an inward and downward inclined surface. Between the inclined surface at the bottom of the lock block 8 and the rotating head 6 of the micro motor 5, there is a ball bearing 7. The mounting base 41 and the corresponding position of the lock body 1 form a groove in which the ball bearing 7 can roll freely.

[0019] On the other side of the lock body 1, there is a lock head 2. The lock head 2 is movably connected to the lock body 1 through a spring 10, so that it has the ability to extend and retract. The end of the lock head 2 (i.e. the end that extends into the inner cavity of the lock body 1) is provided with a slot. In the locked state, the front end of the lock block 8 is precisely locked into the slot under the pushing force of the return spring 9, thereby realizing mechanical locking and preventing the lock head 2 from retracting accidentally.

[0020] The unlocking process is as follows: Once the user's fingerprint is successfully verified on the fingerprint module 3, the fingerprint module 3 sends a drive signal to the micro motor 5. The micro motor 5 then starts, driving the rotating head 6 on its output shaft to rotate. Since the rotating head 6 is a spiral surface, during its rotation, its highest point continuously contacts and pushes the paddle 7 upward. The paddle 7 rolls upward in the slot and presses against the inclined surface at the bottom of the lock block 8, pushing the lock block 8 to slide to one side against the elastic force of the return spring 9. When the lock block 8 moves until its front end is completely disengaged from the slot at the end of the lock head 2, the lock head 2 loses its mechanical locking. At this time, under the restoring force of the spring 10, the lock head 2 will automatically pop out of the lock body 1, completing the unlocking action.

[0021] The locking process is as follows: The user manually presses the lock head 2 back into the lock body 1. During this process, the end of the lock head 2 first contacts and presses against the inclined surface of the head of the lock block 8, forcing the lock block 8 to move upward and compress the return spring 9. At the same time, the force is transmitted to the rotating head 6 through the bead 7. When the slot on the lock head 2 moves to the position aligned with the front end of the lock block 8, the lock block 8 quickly resets under the push of the return spring 9, and its front end re-locks into the slot of the lock head 2, achieving locking. At the same time, the system can control the micro motor 5 to rotate in the opposite direction by a small angle, so that the rotating head 6 returns to the initial position, preparing for the next unlocking.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] 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 ball-type spring lock, comprising a lock body (1) and a shell (4), characterized in that: The outer casing (4) includes a mounting base (41) and an outer cover (42); A micro motor (5) is installed on the side of the lock body (1), and a fingerprint module (3) for fingerprint authentication is embedded in the middle of the mounting base (41). The fingerprint module (3) is electrically connected to the micro motor (5). A rotating head (6) is provided at the output end of the micro motor (5). A lock block (8) is slidably sleeved on the upper end of the lock body (1) through a reset spring (9). A paddle ball (7) is provided between the lock block (8) and the rotating head (6). A lock head (2) is movably provided on the other side of the lock body (1) through a spring (10). The other end of the lock head (2) is inserted into the inner cavity of the lock body (1) and is engaged with the lock block (8).

2. The ball-type unlocking spring lock according to claim 1, characterized in that: The mounting base (41) is fixedly mounted on the lock body (1) by screws, and the outer cover (42) covers the back of the lock body (1).

3. A ball-type unlocking spring lock according to claim 1, characterized in that: A slot for the movement of the paddle (7) is provided between the mounting base (41) and the lock body (1).

4. A ball-type unlocking spring lock according to claim 1, characterized in that: The other end of the lock head (2) has a slot for engaging with the lock block (8).

5. A ball-type unlocking spring lock according to claim 1, characterized in that: The bottom of the locking block (8) has an inclined surface that contacts the dial bead (7).

6. A ball-type unlocking spring lock according to claim 1, characterized in that: The rotating head (6) is spiral in shape, and the spiral surface is arranged from low to high.

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