Electronic lock capable of maintaining locking through pulling force

Abstract

An electronic lock capable of maintaining locking through pulling force comprises a lower cover, an upper cover, a circuit board, a control device and a control system, the lower cover and the upper cover are buckled to form a buckling body, and the circuit board, the control device and the control system are installed in the buckling body; one end of each of the two swing rods is tensioned by one spring, the locking state of the electronic lock is maintained, the tension is stable and reliable, a spring reinforcing device does not need to be mounted, and the cost is saved; the transmission mechanism is arranged below the motor with a larger space, so that the assembly is convenient; the U-shaped elastic buckle is arranged at the end part of the electronic lock and is used for installing the electronic lock, so that the electronic lock is easy to install, disassemble and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic locks, and in particular to an electronic lock that maintains locking by tension, which is widely used in a control method for locking devices such as shared bicycles, shared mobile power supplies, and electric bicycles for remote protocol startup, rental, and control procedures. Background Art

[0002] Currently, there are many types of electronic locks on the market. When locked, they all rely on spring pressure to maintain the locked state. Patent CN218493348U discloses a double-opening electronic lock with a reset function. While this electronic lock can seal items, the lock tongue is reset and the locked state is maintained by the thrust of a spring. This structure can easily cause the middle portion of the spring to warp, weakening the locking effect and potentially causing the sealed item to be lost. Therefore, a separate limiter mechanism is required in the middle of the spring to prevent this warping. This complicates the product structure, increases assembly time and effort, and increases costs. Summary of the Invention

[0003] In order to overcome the problems existing in the above-mentioned technologies, the present invention provides an electronic lock that maintains locking by tension.

[0004] An electronic lock that maintains locking by tension comprises a lower cover, an upper cover, a circuit board, a control device and a control system. The lower cover and the upper cover are buckled together to form a buckling body, and the circuit board, the control device and the control system are installed in the buckling body.

[0005] The control device includes a rocker arm, and there are two rocker arms, which are respectively arranged on both sides of the motor and cooperate with the rocker arm shaft. The ends of the two rocker arms are respectively provided with spring hanging positions, and a spring is installed between the two spring hanging positions. When in the locked state, the spring pulls the two spring hanging positions together, and the lock tongues on the left sides of the two rocker arms extend to the left, and the lock tongues on the right sides extend to the right, so that the two items to be managed are sealed.

[0006] The control device includes a motor, which is installed in a motor seat and provides power for the rotation of the swing arm.

[0007] The control device includes a rocker arm, the top ends of the two rocker arms are provided with spring hangers, the middle ends are provided with a lock tongue, and the bottom ends of the left ends are provided with a rocker arm limiting column. There are two rocker arm limiting columns, which are respectively installed in conjunction with the two rocker arm limiting parts.

[0008] The control device also includes a three-claw wheel, which is rotatably mounted on a three-claw wheel shaft. The three-claw wheel has three wheel claws, the middle wheel claw cooperates with the shift block, and the wheel claws on the left and right sides are respectively connected to the inner sides of the two rocker arms 3 to push the rocker arms 3 to rotate outward.

[0009] The control device comprises a cam, a cam shaft is provided on the top of the cam, a shift block is provided on the side of the cam, and an internal gear is provided on the inner side of the bottom of the cam.

[0010] The lower cover includes a rocker arm shaft, a three-claw wheel shaft, a motor seat and a rocker arm limiting part. The motor seat is located in the middle of the lower cover and is used to install the motor. There are two rocker arm shafts, which are respectively located at the front and rear ends of the right side of the motor seat and are used to install the rocker arm. The three-claw wheel shaft is located in the middle of the left side of the motor seat and is used to install the three-claw wheel. There are two rocker arm limiting parts, which are respectively located at the front and rear ends of the left side of the three-claw wheel shaft.

[0011] A camshaft hole is provided in the middle of the upper cover for installing the camshaft.

[0012] The control system includes a circuit board and a travel switch. The circuit board includes a travel switch and a four-pin terminal. The travel switches are two symmetrical travel switches, which are respectively installed in conjunction with two travel switch contacts. The circuit board is used to sense the movement of the rocker arm. The motor drives the cam to rotate, the cam drives the three-claw wheel to rotate, and the three-claw wheel drives the rocker arm to swing.

[0013] The beneficial effects of the present invention are that a spring is used to tighten one end of the two rocker arms to maintain the locked state of the electronic lock. The tension is stable and reliable, and there is no need to install a spring reinforcement device, which saves costs; the transmission mechanism is arranged under the motor with a larger space for easy assembly; a U-shaped elastic clip is provided at the end of the electronic lock for installing the electronic lock, which is not only easy to install, but also easy to disassemble and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front structural diagram of the utility model;

[0015] Figure 2 is a back structural diagram of the utility model;

[0016] Figure 3 is an exploded view of the structure of the utility model;

[0017] Figure 4 is a diagram of the internal structure of the utility model in the locked state;

[0018] Figure 5 is a diagram of the internal structure of the utility model in the unsealed state;

[0019] Figure 6 is a schematic diagram of the disassembled housing of the present invention;

[0020] Figure: 1, lower cover; 11, rocker arm shaft; 12, three-claw wheel shaft; 13, motor base; 14, rocker arm limiter; 2, motor; 3, rocker arm; 31, spring mount; 32, rocker arm shaft hole; 33, locking tongue; 34, rocker arm limiter post; 35, travel switch contact; 4, three-claw wheel; 5, spring;

[0021] 6. Cam; 61. Camshaft; 62. Shift block; 7. Upper cover; 71. Camshaft hole; 8. Circuit board; 9. Travel switch; 10. U-shaped elastic buckle. DETAILED DESCRIPTION

[0022] The present invention will be further explained clearly and completely below in conjunction with the accompanying drawings and specific embodiments. The described embodiments are only some embodiments of the present invention. For those skilled in the art, other embodiments obtained without creative work all fall within the scope of protection of the present invention.

[0023] As shown in Figures 1, 2 and 6, an electronic lock with tension-maintained locking includes a lower cover 1, an upper cover 7, a circuit board 8, a control device and a control system. The lower cover 1 and the upper cover 7 are snap-fitted to form a snap-fit body, and the circuit board 8 and the control device are installed in the snap-fit body; the control device is installed on one side of the lower cover within the snap-fit body and includes a motor 2, a rocker 3, a three-claw wheel 4, a spring 5, a cam 6, the upper cover 7 and the circuit board 8.

[0024] like Figure 3 As shown, the lower cover 1 includes a rocker arm shaft 11, a three-claw wheel shaft 12, a motor base 13 and a rocker arm limiting portion 14. The motor base 13 is located in the middle of the lower cover 1 and is used to install the motor 2. There are two rocker arm shafts 11, which are respectively located at the front and rear ends of the right side of the motor base 13 for installing the rocker arm 3. The three-claw wheel shaft 12 is located in the middle of the left side of the motor base 13 for installing the three-claw wheel 4. There are two rocker arm limiting portions 14, which are respectively located at the front and rear ends of the left side of the three-claw wheel shaft 12.

[0025] like Figure 3 As shown in Figures 4 and 5, the motor 2 is installed in the motor base 13.

[0026] There are two rocker arms 3, mounted on either side of the motor, rotatably engaged with the rocker shaft 11. Each rocker arm 3 has a spring catch 31 at its end, a locking tongue 33 in its middle, and two rocker arm stop posts 34 at its left bottom end, each engaged with the two rocker arm stoppers 14. The cam 6 has a camshaft 61 at its top, a shift block 62 on its side, and an internal gear on its bottom inner side. A camshaft hole 71 is provided in the middle of the upper cover 7 for mounting the camshaft 61. The three-claw wheel 4 is rotatably mounted on the three-claw wheel shaft 12. The three-claw wheel 4 has three claws. The center claw engages with the shift block 62, while the left and right claws are connected to the inner sides of the two rocker arms 3, respectively, to propel the rocker arms 3 outward.

[0027] like Figure 4 As shown, there are two spring hanging positions 31, and a spring 5 is installed between the two spring hanging positions 31. When in the locked state, the spring 5 pulls the two spring hanging positions 31 together. At this time, the two rocker limit posts 34 move relatively outward to the extreme positions, and the left lock tongue 33 extends to the left, and the right lock tongue 33 extends to the right. The spring tension maintains the locked state of the electronic lock, sealing the items to be managed.

[0028] A travel switch contact 35 is provided on the top of the two rocker limit posts 34 for toggling the travel switch to start or stop the motor 2 .

[0029] As shown in Figures 3, 4, 5 and 6, the control system includes a circuit board 8 and a limit switch 9. The circuit board 8 connects the pins of the limit switch to the pins of the four-pin terminal block. The limit switch 9 includes two symmetrical limit switches, namely a locking limit switch and an unlocking limit switch, which are respectively used to sense the movements of the left and right rocker arms, and the two limit switches are respectively installed in conjunction with the two limit switch contacts 35.

[0030] like Figure 4 As shown in Figure 5, when the signal processing module (not attached to the motor lock, but located in the main chassis) detects that a user intends to remove an item, it transmits this signal to the main control module (not attached to the motor lock, but located in the main chassis). The main control module then drives motor 2 counterclockwise (if the user is assigned to remove the item on the left). This in turn drives cam 6. When cam 6 reaches a negative 35-degree angle, the middle pawl of the three-claw wheel contacts the shift block 62. Driven by shift block 62, the three-claw wheel 4 begins to rotate. The left pawl of the three-claw wheel pushes the left rocker 3 toward the center of the motor lock, retracting the left lock tongue 33 into the lock motor, unlocking the left item and allowing the user to remove it. During the unlocking process, contact 35 at the lower end of the rocker touches the travel switch. Upon noticing that the travel switch has switched to the motor-stop state, the system promptly sends a command to stop the motor.

[0031] Unlock the object on the right in the same way.

[0032] The end of the buckle body is provided with a U-shaped elastic buckle 10 for installing the electronic lock. It is not only easy to install, but also easy to disassemble and maintain.

[0033] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electronic lock with tension-maintained locking, comprising a lower cover (1), an upper cover (7), a control device and a control system, wherein the lower cover (1) and the upper cover (7) are fastened together to form a fastening body, and the control device and the control system are installed in the fastening body; characterized in that, The control device includes a rocker (3). There are two rocker arms (3), which are respectively arranged on both sides of the motor and matched with the rocker arm shaft (11). The ends of the two rocker arms (3) are respectively provided with spring hanging positions (31). A spring (5) is installed between the two spring hanging positions (31). When in a locked state, the spring (5) pulls the two spring hanging positions (31) together, and the left lock tongue (33) extends to the left, and the right lock tongue (33) extends to the right. The locked state of the electronic lock is maintained by the spring tension, so that the two items to be managed are sealed.

2. The electronic lock with tension-maintained locking according to claim 1, characterized in that: The control device comprises a motor (2), which is installed in a motor seat (13) and provides power for the rotation of the pendulum rod (3).

3. The electronic lock with tension-maintained locking according to claim 2, characterized in that: The control device comprises a rocker (3), wherein the ends of the two rocker arms (3) are provided with spring hangers (31), the middle portion is provided with a lock tongue (33), and the bottom portion of the left end is provided with a rocker limit column (34). There are two rocker limit columns (34), which are respectively mounted in conjunction with the two rocker limit portions (14).

4. The electronic lock with tension-maintained locking according to claim 2, characterized in that: The control device comprises a three-claw wheel (4), which is rotatably mounted on a three-claw wheel shaft (12). The three-claw wheel (4) comprises three wheel claws, wherein the wheel claw located in the middle cooperates with the shift block (62), and the wheel claws located on the left and right sides are respectively connected to the inner sides of the two rocking rods (3) for pushing the rocking rods (3) to rotate outward.

5. The electronic lock with tension-maintained locking according to claim 2, characterized in that: The control device comprises a cam (6), wherein a cam shaft (61) is provided on the top of the cam (6), a shift block (62) is provided on the side, and an internal gear is provided on the inner side of the bottom of the cam (6).

6. The electronic lock with tension-maintained locking according to claim 1, characterized in that: The lower cover (1) includes a rocker shaft (11), a three-claw wheel shaft (12), a motor seat (13) and a rocker limit portion (14). The motor seat (13) is provided in the middle of the lower cover (1) for mounting the motor (2). The rocker shaft (11) has two portions, which are respectively provided at the front and rear ends of the right side of the motor seat (13) for mounting the rocker (3). The three-claw wheel shaft (12) is provided in the middle of the left side of the motor seat (13) for mounting the three-claw wheel (4). The rocker limit portion (14) has two portions, which are respectively provided at the front and rear ends of the left side of the three-claw wheel shaft (12).

7. The electronic lock with tension-maintained locking according to claim 1, characterized in that: A camshaft hole (71) is provided in the middle of the upper cover (7) for mounting the camshaft (61).

8. The electronic lock with tension-maintained locking according to claim 3, characterized in that: The tops of the two rocker limit posts (34) are provided with travel switch contacts (35) for toggling the travel switch to start or stop the motor (2).

9. The electronic lock with tension-maintained locking according to claim 2, characterized in that: The control system includes a circuit board (8) and a travel switch (9), wherein the travel switch (9) includes a symmetrically arranged locking travel switch and an unlocking travel switch, which are respectively mounted in conjunction with two travel switch contacts (35). The motor (2) drives the cam (6) to rotate, and the cam (6) drives the rocker (3) to swing.

10. The electronic lock with tension-maintained locking according to claim 2, characterized in that: One end of the lower cover (1) is provided with a U-shaped elastic buckle (10), and the U-shaped elastic buckle (10) is used to install an electronic lock.

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