An economical and simple motor lock

Abstract

This utility model relates to an economical and simple motor lock, including a lock housing; a bolt rotatably mounted inside the lock housing, and a first elastic element inside the lock housing that keeps the bolt extending outward from the lock housing; characterized in that it also includes a motor, mounted inside the lock housing; and a locking block mounted on the output shaft of the motor, enabling the motor to drive the locking block to swing, the locking block having a blocking part, and the locking block can swing to a locked position and an unlocked position; in the locked position, the blocking part can block the bolt from deflecting inward into the lock housing; in the unlocked position, the blocking part releases the obstruction to the bolt deflection. It abandons the traditional solenoid valve lock's locking of the bolt. Compared with solenoid valve locks, the motor is more stable, less prone to vibration opening, and has better security. With the same amount of electricity, the motor can be used more times and has a longer lifespan, and the assembly process of the motor is also simpler than that of a solenoid valve lock.

Description

Technical Field

[0001] This utility model relates to a lock structure for a safe, and more particularly to an economical and simple motor lock. Background Technology

[0002] Traditional electronic safes typically feature a mechanical-electronic composite lock, which includes a sliding plate on the back of the door panel. A bolt is connected to the front of the sliding plate, which is driven by a drive mechanism to slide back and forth laterally. The back of the door panel has a solenoid valve lock with a solenoid valve core. The solenoid valve core can extend and retract to engage with the sliding plate to prevent it from moving back and forth. The drive mechanism generally includes a handle and a turntable or lever on the back of the door panel. The turntable or lever is connected to the sliding plate, and turning the handle will drive the sliding plate to move back and forth under the action of the turntable or lever.

[0003] For example, a Chinese utility model patent with patent number ZL02215701.8 (publication number CN2525181Y) entitled "A Mechanical and Electronic Composite Safety Lock" discloses such a mechanical and electronic composite safety lock.

[0004] Existing mechanical-electronic composite locks have the following drawbacks: 1. They all use solenoid valve locks for locking control, and the power consumption of solenoid valve locks is relatively high; 2. The solenoid valve core is in direct contact with the sliding plate. If too much force is applied when turning the handle, the sliding plate will directly hit the solenoid valve core, damaging it or sliding past it, opening the door and creating a safety hazard; 3. They are easily opened by vibration. Existing solenoid valve locks use a spring (generally with a small spring force, too large and it won't hold) to keep the solenoid valve core in the working position. If the lock body is vibrated, i.e., one side of the lock body is lifted, one hand is placed on the handle, and the other hand controls the lock body to fall. At the moment of landing, the handle is turned, and the spindle will have a downward force due to gravity and inertia at the moment of landing, and will move down a short distance, thus losing its working position and creating a safety hazard; 4. Existing mechanical-electronic composite locks do not have an emergency opening function, and the solenoid valve lock is not easy to open after damage.

[0005] In conclusion, existing electromechanical-electronic composite locks used on safes can be further improved. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an economical and simple motor lock that is simple and reasonable in structure, consumes little power, and can prevent people from illegally opening the lock by means of vibration, in view of the above-mentioned existing technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an economical and simple motor lock, including a lock shell; a bolt, rotatably installed inside the lock shell, and a first elastic element provided inside the lock shell to keep the bolt extending outward from the lock shell; characterized in that: it also includes a motor, installed inside the lock shell; a locking block, installed on the output shaft of the motor, so that the motor can drive the locking block to swing, the locking block having a blocking part, and the locking block can swing to a locked position and an unlocked position; in the locked position, the blocking part can block the bolt from deflecting inward in the direction of retracting into the lock shell; in the unlocked position, the blocking part releases the obstruction to the bolt deflection.

[0008] A further improvement includes a second elastic element that acts on the locking block to maintain its tendency to swing toward the locked position. The second elastic element applies a force to the locking block to keep it in the locked position, resulting in a better locking effect on the bolt and preventing the locking block from easily leaving the locked position.

[0009] To facilitate the installation of the motor and locking block, an improvement is made by fixing a mounting bracket inside the lock housing. The motor is mounted on the mounting bracket, which has a through hole for the blocking part to extend and swing. When the blocking part swings to the locking position, the inner wall of the through hole blocks the blocking part. The motor and locking block can be pre-installed on the mounting bracket, and then the mounting bracket is installed into the lock housing, making operation more convenient. The through hole blocks the swing of the blocking part; the blocking state indicates that the rotation is in place.

[0010] In a further improvement, a blocking block is fixed to the mounting bracket. The blocking block is located below the output shaft of the motor, and it blocks the front end face of the locking block. The blocking block serves to prevent impact. When an external force impacts the locking tongue, the blocking block blocks the front end face of the locking block, protecting the motor's output shaft from bending or breaking, ensuring its lifespan, and preventing forced opening.

[0011] To facilitate the installation and fixation of the blocking block on the mounting frame, preferably, the blocking block is a hexagonal nut. After the bolt passes through the mounting frame, the blocking block is threaded onto the bolt and pressed against the inner wall of the mounting frame.

[0012] Preferably, the latch is fan-shaped, with outwardly extending pivots on the front and rear ends of the middle portion. The latch is rotatably mounted inside the lock housing via these pivots, and the first elastic element is a torsion spring sleeved on the pivot. Alternatively, the pivot can be independently installed.

[0013] As an improvement, the edge of the latch is provided with an arc-shaped clearance notch. When the locking block swings to the unlocked position, the blocking part aligns with the arc-shaped clearance notch. If the latch is too thick in the front-to-back direction, it will affect the misalignment between the locking block and the latch after the locking block swings. The arc-shaped clearance notch allows the locking block to swing at a small angle, thus releasing the obstruction to the latch and not hindering the rotation of the latch. This also allows the latch to be made thicker in the front-to-back direction, strengthening the latch.

[0014] Further improvements include an emergency drive plate that is constrained to slide up and down on the lock housing. This emergency drive plate is driven downwards by an emergency lock mechanism. A tension spring is also provided inside the lock housing to maintain the upward movement of the emergency drive plate. The downward movement of the emergency drive plate directly drives the locking block to swing towards the unlocked position. The emergency drive plate allows for emergency unlocking of the motor lock in case of motor failure. The emergency drive plate can be driven by an emergency mechanical lock mechanism, or it can be driven with the aid of other tools.

[0015] For ease of assembly, the lock housing includes a base and a pressure cover. The pressure cover is fixed on the base, and the emergency drive plate is constrained on the rear outer end face of the pressure cover. The emergency drive plate has a driving part that passes through the pressure cover and enters the lock housing. The locking block has a side-protruding linkage part that cooperates with the driving part.

[0016] To facilitate the cooperation between the emergency drive plate and the emergency lock, the emergency drive plate has an outwardly bent flange for cooperation with the emergency lock. One end of the tension spring is connected to the pressure cover, and the other end of the tension spring is connected to the emergency drive plate.

[0017] Compared with existing technologies, the advantages of this invention are as follows: it eliminates the traditional electromagnetic valve lock's locking of the bolt, and instead uses a motor-driven, oscillating locking block to indirectly lock the bolt. In the locked position, the blocking part on the locking block prevents the bolt from deflecting inwards towards the lock housing; in the unlocked position, the blocking part releases the obstruction to the bolt's deflection. Compared with electromagnetic valve locks, motors are more stable, less prone to vibration, and offer better security. With the same amount of power, motors can be used more frequently and have a longer lifespan. Furthermore, the assembly process of motors is simpler than that of electromagnetic valve locks. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model. Figure 1 (Normal locked state);

[0019] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present utility model. Figure 2 (Normal locked state);

[0020] Figure 3 This is a cross-sectional view of an embodiment of the present invention (in normal locked state);

[0021] Figure 4 This is a cross-sectional view of an embodiment of the present invention (normal unlocking state);

[0022] Figure 5 This is a three-dimensional structural diagram of the present invention after the base has been removed;

[0023] Figure 6 This is a three-dimensional structural diagram of the lock tongue of the lock shell in an embodiment of this utility model;

[0024] Figure 7 This is a three-dimensional structural diagram of the locking block in an embodiment of the present invention. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-7 The figure shown is a preferred embodiment of the present invention.

[0027] An economical and simple motor lock includes a lock housing 1; the lock housing 1 includes a base 11 and a pressure cover 12, the pressure cover 12 being fixed on the base 11.

[0028] The latch 3 is rotatably mounted inside the lock housing 1. The lock housing 1 contains a first elastic element 4a that keeps the latch 3 protruding outwards from the lock housing 1. The lock housing 1 has a keyhole 10 for the latch 3 to extend or retract. The latch 3 is fan-shaped, and its front and rear ends each have outwardly extending pivots 31. The latch 3 is rotatably mounted inside the lock housing 1 via these pivots 31. The first elastic element 4a is a torsion spring sleeved on the pivot 31.

[0029] Motor 2 is installed inside lock housing 1.

[0030] The locking block 5 is mounted on the output shaft of the motor 2, enabling the motor 2 to drive the locking block 5 to swing. The locking block 5 has a blocking part 51, and the locking block 5 can swing to the locked position and the unlocked position. In the locked position, the blocking part 51 can block the deflection of the bolt 3 in the direction of retracting into the lock case 1. In the unlocked position, the blocking part 51 releases the obstruction of the deflection of the bolt 3.

[0031] The second elastic element 4b acts on the locking block 5 to maintain its tendency to swing toward the locking position.

[0032] A mounting bracket 6 is fixed inside the lock housing 1. The motor 2 is mounted on the mounting bracket 6. The mounting bracket 6 has a through hole 61 for the blocking part 51 to extend and swing. When the blocking part 51 swings to the locked position, the inner wall of the through hole 61 blocks the blocking part 51. A blocking block 7 is fixed on the mounting bracket 6. The blocking block 7 is located below the output shaft of the motor 2 and blocks the front end face of the locking block 5. The blocking block 7 is a polygonal nut. After a bolt 71 passes through the mounting bracket, the blocking block 7 is threaded onto the bolt 71 and pressed tightly against the inner wall of the mounting bracket 6.

[0033] The edge of the latch 3 is provided with an arc-shaped clearance notch 32. When the locking block 5 swings to the unlock position, the blocking part 51 aligns with the arc-shaped clearance notch 32.

[0034] The lock also includes an emergency drive plate 8 that is constrained on the lock housing 1 and can slide up and down. The emergency drive plate 8 is driven downward by the emergency lock. The lock housing 1 also has a tension spring 9 that keeps the emergency drive plate 8 moving upward. The downward movement of the emergency drive plate 8 can directly drive the locking block 5 to swing toward the unlocked position. The emergency drive plate 8 is constrained on the rear outer end face of the pressure cover 12. The emergency drive plate 8 has a driving part 81 that passes through the pressure cover 12 and enters the lock housing 1. The locking block 5 has a side-protruding linkage part 52 that cooperates with the driving part 81. The emergency drive plate 8 has an outwardly bent flange 82 for cooperating with the emergency lock. One end of the tension spring 9 is connected to the pressure cover 12, and the other end of the tension spring 9 is connected to the emergency drive plate 8.

[0035] In this embodiment, the direction in which the latch 3 extends out of the lock housing 1 is "up", and the direction in which the latch 3 retracts into the lock housing 1 is "down".

[0036] The working principle and process of this high-security shockproof electromagnetic lock are as follows:

[0037] like Figures 1-3 As shown, the locking block 5 is in the locked position, and the blocking part 51 blocks the deflection of the bolt 3 in the direction of retracting into the lock housing 1; the bolt 3 cannot retract into the lock housing 1, and the motor lock is in the locked state.

[0038] like Figure 4 As shown, during normal unlocking, the control motor 2 operates, driving the locking block 5 to swing toward the unlocking position. In the unlocking position, the blocking part 51 aligns with the arc-shaped clearance notch 32, and the blocking part 51 releases its obstruction of the deflection of the bolt 3. The bolt 3 rotates and retracts, and the blocking part slides in the arc-shaped clearance notch 32.

[0039] Emergency unlocking mode: The emergency lock moves the emergency drive plate 8 directly downward, and the drive part 81 moves the locking block 5 to the unlocking position to complete the unlocking.

[0040] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. An economical and simple motor lock, comprising a lock housing (1); The latch (3) is rotatably mounted inside the lock housing (1), and the lock housing (1) is provided with a first elastic element (4a) that keeps the latch (3) protruding out of the lock housing (1); characterized in that Also includes The motor (2) is installed inside the lock housing (1); A locking block (5) is installed on the output shaft of a motor (2) so that the motor (2) can drive the locking block (5) to swing. The locking block (5) has a blocking part (51) and can swing to a locked position and an unlocked position. In the locked position, the blocking part (51) can block the deflection of the bolt (3) in the direction of retracting into the lock case (1). In the unlocked position, the blocking part (51) releases the obstruction of the deflection of the bolt (3).

2. The economy mortise lock of claim 1, wherein: It also includes a second elastic element (4b) that acts on the locking block (5) to maintain its tendency to swing toward the locking position.

3. The economy mortise lock of claim 1, wherein: The lock housing (1) is fixed with a mounting bracket (6), and the motor (2) is mounted on the mounting bracket (6). The mounting bracket (6) has a through hole (61) for the blocking part (51) to extend and swing. When the blocking part (51) swings to the locking position, the inner wall of the through hole (61) blocks the blocking part (51).

4. The economy mortise lock of claim 3, wherein: A blocking block (7) is fixed on the mounting bracket (6). The blocking block (7) is located below the output shaft of the motor (2). The blocking block (7) blocks the front end face of the locking block (5).

5. The economical and simple motor lock according to claim 4, characterized in that: The blocking block (7) is a hexagonal nut. After the bolt (71) passes through the mounting frame, the blocking block (7) is threaded onto the bolt (71) and pressed against the inner wall of the mounting frame (6).

6. The economical and simple motor lock according to claim 1, characterized in that: The latch (3) is fan-shaped, and the front and rear ends of the middle part of the latch (3) have outwardly extending pivots (31). The latch (3) is rotatably installed in the lock case (1) through the pivots (31). The first elastic element (4a) is a torsion spring sleeved on the pivots (31).

7. The economical and simple motor lock according to claim 6, characterized in that: The edge of the latch (3) is provided with an arc-shaped clearance notch (32). When the locking block (5) swings to the unlock position, the blocking part (51) is aligned with the arc-shaped clearance notch (32).

8. The economical and simple motor lock according to claim 1, characterized in that: It also includes an emergency drive plate (8) that is constrained on the lock housing (1) and can slide up and down. The emergency drive plate (8) is driven by the emergency lock and can move down. The lock housing (1) is also provided with a tension spring (9) that keeps the emergency drive plate (8) moving up. The downward movement of the emergency drive plate (8) can directly drive the locking block (5) to swing toward the unlock position.

9. The economical and simple motor lock according to claim 8, characterized in that: The lock housing (1) includes a base (11) and a pressure cover (12). The pressure cover (12) is fixed on the base (11). The emergency drive plate (8) is constrained on the rear outer end face of the pressure cover (12). The emergency drive plate (8) has a driving part (81) that passes through the pressure cover (12) and enters the lock housing (1). The locking block (5) has a side-protruding linkage part (52) that cooperates with the driving part (81).

10. The economical and simple motor lock according to claim 9, characterized in that: The emergency drive plate (8) has an outwardly bent flange (82) for engaging with an emergency lock. One end of the tension spring (9) is connected to the pressure cover (12), and the other end of the tension spring (9) is connected to the emergency drive plate (8).

Images