Rotary tongue lock of safety box

Abstract

The rotary tongue lock comprises a lock shell, and the lock shell comprises a lock tongue rotationally arranged in an inner containing cavity of the lock shell, a first torsional spring arranged on the lock tongue, a first opening formed in one side of the lock shell and a second opening formed in the lock shell; the locking part is arranged in the lock shell and is used for locking or unlocking the spring bolt; the electric driving part is used for driving the locking part to lock or unlock; the manual driving part comprises a swing arm arranged in the lock shell and a reset spring arranged on the swing arm, the swing arm comprises a first limiting protrusion arranged on one side of the swing arm and used in cooperation with the locking part, and a reset device arranged on one side of the swing arm; the reset device comprises a second limiting protrusion, a rotating block rotationally arranged on the swing arm and a second torsional spring with one side abutting against the rotating block, so that the shockproof effect of the shockproof device is improved while the reset effect is achieved, and meanwhile the shockproof device is compact in overall structure, good in electromechanical cooperation, small in occupied space, capable of saving materials and low in cost.

Description

Technical Field

[0001] The invention relates to the technical field of locks, and in particular to a safe bolt lock. Background Art

[0002] On April 4, 2019, the mandatory national standard GB 10409-2019 "Anti-theft Safes (Boxes)" was officially released and will be implemented on May 1, 2020. The standard separately stipulates the requirements for anti-theft locks used on anti-theft safes (boxes), and clearly stipulates that the locks should have lock tongues, and the lock tongues should be able to withstand axial pressures of 980N and lateral pressures of more than 1470N. Electromagnets are used in safes (boxes) because they are simple and cheap. This new national standard clearly stipulates that the lock actuator should not be driven and locked by electromagnets. It is particularly urgent to design and develop a safe (box) lock that can replace electromagnets.

[0003] The rotary tongue locks currently on the market are all evolved from foreign mechanical combination locks. They are relatively large in size, consume more materials, and are relatively expensive. At the same time, their overall protection against vibration and lock picking is low.

[0004] Based on the above reasons, it is necessary to improve the existing technology. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The present invention is aimed at the above defects existing in the prior art, and particularly proposes a safe rotary bolt lock to solve the problems raised in the above background technology.

[0007] Technical Solution

[0008] In order to solve the above technical problems, the present invention provides a safe rotary bolt lock, comprising a lock shell, wherein the lock shell comprises a lock bolt rotatably arranged in an inner cavity of the lock shell, a first torsion spring arranged on the lock bolt, a first opening arranged on one side of the lock shell for the lock bolt to extend and retract, and a second opening arranged on the lock shell;

[0009] A locking portion, which is disposed in the lock housing and is used to lock or unlock the lock tongue;

[0010] An electric drive unit, the electric drive unit is used to drive the locking unit to lock or unlock;

[0011] A manual drive unit, the manual drive unit includes a swing arm arranged in the lock housing and a reset spring arranged on the swing arm, the swing arm includes a first limiting protrusion arranged on one side thereof for use with the locking unit, and a reset device arranged on one side of the swing arm, the reset device includes a second limiting protrusion, a rotating block rotatably arranged on the swing arm, and a second torsion spring on one side of the swing arm abutting against the rotating block.

[0012] In the above technical solution, the locking portion includes a moving block connected to the locking portion and a motor driving the moving block to rise and fall.

[0013] In the above technical solution, a limiting rib which fits with the motor is convexly provided on the lock housing.

[0014] In the above technical solution, the locking portion includes a locking block rotatably arranged in the internal cavity of the lock shell, a first protrusion arranged on the locking block and a second protrusion arranged on one side of the locking block, and one side of the first protrusion abuts against the first limiting protrusion.

[0015] In the above technical solution, a first receiving groove for receiving one end of the locking block is recessed on the locking tongue.

[0016] In the above technical solution, a convex rib is provided on one side of the moving block, and a second accommodating groove for accommodating the second convex block is concavely provided on the convex rib.

[0017] In the above technical solution, a stop block is protruding from the second opening and is used in conjunction with the reset spring.

[0018] In the above technical solution, the reset device is provided in two groups.

[0019] Beneficial Effects

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The overall structure is compact, the electromechanical coordination is good, the space occupied is small, and the material cost is low.

[0022] After the lock tongue is locked, the second torsion spring and the rotating block are used to lock the swing arm. The vibration caused by the external force hitting the swing tongue lock cannot move the swing arm, which effectively prevents the swing arm from moving and unlocking due to the vibration inside the swing tongue lock, thereby improving the safety protection capability of the lock.

[0023] When the swing arm is pulled outward to unlock, the second limiting protrusion drives the rotating block to move, so that the second torsion spring is deformed. When the outward pulling force is no longer applied to the swing arm, the second torsion spring can perform the resetting function together with the reset spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the reverse structure of the present invention.

[0026] Figure 3 It is a schematic diagram of the front structure of the present invention.

[0027] Figure 4 It is a partial structural schematic diagram of the lock housing of the present invention.

[0028] In the figure: 1 is a lock housing, 10 is a lock tongue, 11 is a first torsion spring, 12 is a first opening, 13 is a second opening, 100 is a limiting rib, 101 is a first accommodating groove, 130 is a stop block, 2 is a locking portion, 20 is a locking block, 21 is a first protrusion, 22 is a second protrusion, 3 is an electric drive portion, 30 is a moving block, 31 is a motor, 300 is a second accommodating groove, 4 is a manual drive portion, 40 is a swing arm, 41 is a reset spring, 42 is a first limiting protrusion, 43 is a reset device, 430 is a second limiting protrusion, 431 is a rotating block, and 432 is a second torsion spring. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] See also Figure 1-4 The present invention provides a safe bolt lock, comprising a lock shell 1, wherein the lock shell 1 comprises a bolt 10 rotatably arranged in an inner cavity of the lock shell 1, a first torsion spring 11 arranged on the bolt 10, a first opening 12 arranged on one side of the lock shell 1 for the bolt 10 to extend and retract, and a second opening 13 arranged on the lock shell 1;

[0031] A locking portion 2, which is disposed in the lock housing 1 and is used to lock or unlock the lock tongue 10;

[0032] An electric drive unit 3, the electric drive unit 3 is used to drive the locking unit 2 to lock or unlock;

[0033] A manual drive unit 4, the manual drive unit 4 includes a swing arm 40 arranged in the lock housing 1 and a reset spring 41 arranged on the swing arm 40, the swing arm 40 includes a first limiting protrusion 42 arranged on one side thereof for use with the locking unit 2, and a reset device 43 arranged on one side of the swing arm 40, the reset device 43 includes a second limiting protrusion 430, a rotating block 431 rotatably arranged on the swing arm 40, and a second torsion spring 432 with one side abutting against the rotating block 431.

[0034] In the above structure, the electric drive unit can automatically lock or unlock the locking unit. When the electric drive unit cannot be used, the key is used to rotate the lock core, and the lock core drives the swing arm on the manual drive unit to move so that the first limit protrusion drives the locking unit to unlock, and the reset spring is deformed. At the same time, the second limit protrusion locks the swing arm to move synchronously, thereby pressing the rotating block to move, and the rotating block drives the second torsion spring to deform. The torsion spring is no longer locked by the locking unit and is forced to retract into the lock shell, and the first torsion spring is deformed by force;

[0035] When the user needs to lock the rotary tongue lock, the first torsion spring resets and drives the lock tongue to extend to the locked position. The swing arm is no longer subjected to the force applied by the lock core. The reset spring and the second torsion spring reset at the same time and drive the swing arm to reset, so that the locking part locks the lock tongue again. The rotating block is pushed to reset by the second torsion spring. The second torsion spring presses one side of the rotating block to ensure that the rotating block is pressed by the second torsion spring after the lock tongue is locked. The rotating block clamps the second limiting protrusion so that the swing arm will not move when it is vibrated by external force. The reset device has the reset ability and effectively improves the shockproof ability of the rotary tongue lock. The overall structure is compact, the electromechanical coordination is good, the space occupied is small, and the material cost is low.

[0036] Specifically, the locking part 2 includes a moving block 30 connected to the locking part 2 and a motor 31 for driving the moving block 30 to move up and down. The locking part can be moved more accurately through the cooperation between the moving block and the motor.

[0037] Specifically, the lock housing 1 is provided with a limiting rib 100 which fits the motor 31 . The limiting rib can ensure that the motor is not affected by external forces and its displacement, thereby preventing the motor from being able to move up and down.

[0038] Specifically, the locking part 2 includes a locking block 20 rotatably arranged in the internal cavity of the lock shell 1, a first protrusion 21 arranged on the locking block 20, and a second protrusion 22 arranged on one side of the locking block 20. One side of the first protrusion 21 abuts against the first limiting protrusion 42. Through the cooperation between the first protrusion and the first limiting protrusion, the manual driving part can achieve that the first limiting protrusion drives the locking part to move synchronously when the swing arm moves.

[0039] Specifically, the lock tongue 10 is concavely provided with a first receiving groove 101 for receiving one end of the locking block 20. The first receiving groove can ensure that the locking block accurately locks the lock tongue to prevent the locking block from shifting.

[0040] Specifically, a convex rib is provided on one side of the moving block 30, and a second accommodating groove 300 for accommodating the second protrusion 22 is recessed on the convex rib. The second accommodating groove is used to limit the position of the second protrusion, thereby preventing the second protrusion from shifting and causing the moving block to be unable to drive the locking part to move.

[0041] Specifically, a stop block 130 used in conjunction with the reset spring 41 is protruded from the second opening 13 , and the stop block abuts against the reset spring. When the user pulls the swing arm, the reset spring is displaced and presses against the stop block, thereby deforming the reset spring.

[0042] Specifically, the resetting device 43 is provided in two groups.

[0043] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A safe bolt lock, comprising: A lock housing (1), the lock housing (1) comprising a lock tongue (10) rotatably arranged in an internal cavity of the lock housing (1), a first torsion spring (11) arranged on the lock tongue (10), a first opening (12) arranged on one side of the lock housing (1) for extending and retracting the lock tongue (10), and a second opening (13) arranged on the lock housing (1); A locking portion (2), the locking portion (2) being arranged in the lock housing (1) and being used to lock or unlock the lock tongue (10); An electric drive unit (3), the electric drive unit (3) being used to drive the locking unit (2) to lock or unlock; Features: A manual drive unit (4), the manual drive unit (4) comprising a swing arm (40) arranged in the lock housing (1) and a reset spring (41) arranged on the swing arm (40), the swing arm (40) comprising a first limiting protrusion (42) arranged on one side thereof for use with the locking unit (2), a reset device (43) arranged on one side of the swing arm (40), the reset device (43) comprising a second limiting protrusion (430), a rotating block (431) rotatably arranged on the swing arm (40), and a second torsion spring (432) having one side abutting against the rotating block (431).

2. A safe bolt lock according to claim 1, characterized in that: The locking portion (2) comprises a moving block (30) connected to the locking portion (2) and a motor (31) for driving the moving block (30) to rise and fall.

3. A safe bolt lock according to claim 2, characterized in that: A limiting rib (100) is protruding from the lock housing (1) and is fitted with the motor (31).

4. A safe bolt lock according to claim 1, characterized in that: The locking portion (2) comprises a locking block (20) rotatably disposed in an internal cavity of the lock housing (1), a first protrusion (21) disposed on the locking block (20), and a second protrusion (22) disposed on one side of the locking block (20), wherein one side of the first protrusion (21) abuts against the first limiting protrusion (42).

5. A safe bolt lock according to claim 4, characterized in that: The locking tongue (10) is recessed with a first receiving groove (101) for receiving one end of the locking block (20).

6. A safe bolt lock according to any one of claims 2 or 4, characterized in that: A convex rib is provided on one side of the moving block (30), and a second accommodating groove (300) for accommodating the second convex block (22) is concavely provided on the convex rib.

7. A safe bolt lock according to claim 1, characterized in that: A stop block (130) is protruding from the second opening (13) and is used in conjunction with the return spring (41).

8. A safe bolt lock according to claim 1, characterized in that: The resetting device (43) is provided in two groups.

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