Electronic lock with emergency function

Abstract

The electronic lock with the emergency function is characterized in that the electronic lock comprises a base, the base is provided with a top face and a bottom face, and a strip-shaped hole is formed in the base; the spring bolt is rotationally mounted on the bottom surface of the base; the locking block is rotationally installed on the bottom face of the base, the locking block can lock or unlock the spring bolt through rotation of the locking block, a first driving column protruding inwards and a second driving column protruding outwards are arranged on the locking block, and the second driving column penetrates through the strip-shaped hole and then extends out of the top face of the base; the main unlocking block is restrained on the bottom surface of the base and can move up and down, downward movement of the main unlocking block can be matched with the first driving column, and vertical movement of the main unlocking block is driven by a motor; and the emergency unlocking block is restrained on the top surface of the base and can move up and down, the emergency unlocking block keeps an upward moving trend under the action of a spring, the emergency unlocking block can move downwards under the action of external force, and the downward moving of the emergency unlocking block can be matched with the second driving column. The electronic lock with the emergency function is reasonable and compact in structure.

Description

Technical Field

[0001] The utility model relates to a lock for a safe, in particular to an electronic lock with an emergency function. Background Art

[0002] The disadvantage of a single electronic safe lock is that when there is a problem with the internal electronic components and the safe cannot be opened, it can only be opened by a specialized locksmith, which will delay the time of retrieving items from the safe and is more likely to damage the safe door.

[0003] In order to solve the above-mentioned technical problems and achieve the function of emergency opening of the electronic password lock, an emergency mechanical lock is generally provided on the safe door. For example, a Chinese utility model patent "Safe Emergency Lock Opening Device" with patent number ZL200420080017.4 (publication number CN2727328Y) also discloses an opening device with similar emergency function as the above-mentioned, including a lock tongue slide plate, a solenoid valve for locking the lock tongue slide plate with a valve core, a mechanical password lock is fixed on the emergency lock, and the mechanical password lock is provided with a rotating handle, and a shift fork is fixed on the rotating handle, and the shift fork can shift the valve core; the device organically combines the electronic password lock and the mechanical password lock, and when the electronic password lock cannot be opened due to various reasons, the mechanical password lock can also be used to open the safe.

[0004] In this emergency opening device, the lock tongue slide acts directly on the iron core of the solenoid valve. The solenoid valve is easily damaged when criminals violently open it, especially when criminals drop the box. The solenoid valve will be forced to open under the action of inertia. In addition, the existing lock shells are composed of two parts, with complex structure and high cost. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide an electronic lock with a reasonable and compact structure and an emergency function in view of the above-mentioned existing technical status.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: an electronic lock with emergency function, characterized in that: it includes a base, the base has a top surface and a bottom surface, and a strip hole penetrating the top surface and the bottom surface is opened on the base; a lock tongue is rotatably mounted on the bottom surface of the base, and the rotation of the lock tongue can extend or retract into the side of the base, and the lock tongue is maintained by a first torsion spring with a tendency to extend out of the base; a locking block is rotatably mounted on the bottom surface of the base, and the rotation of the locking block can lock or unlock the lock tongue, and the locking block is maintained by a second torsion spring to rotate in the direction of locking the lock tongue, and the locking block A first driving column protruding inward and a second driving column protruding outward are provided on the top, and the second driving column extends out of the top surface of the base after passing through the strip hole; a main unlocking block is constrained on the bottom surface of the base and can move up and down, and the downward movement of the main unlocking block can cooperate with the first driving column to drive the locking block in the unlocking direction, and the upward movement of the main unlocking block is driven by a motor; an emergency unlocking block is constrained on the top surface of the base and can move up and down, and the emergency unlocking block maintains an upward movement trend by the action of a spring, and the emergency unlocking block can move downward under the action of an external force, and the downward movement of the emergency unlocking block can cooperate with the second driving column to drive the locking block in the unlocking direction.

[0007] Preferably, a driving screw is installed on the output shaft of the motor, and the main unlocking block is provided with an internal thread that matches the external thread of the driving screw. This method drives the main unlocking block to move by thread transmission, and has the advantages of smooth and accurate transmission and stable retention.

[0008] In order to ensure that the downward movement of the main unlocking block and the emergency unlocking block can push the locking block to swing in the unlocking direction, the main unlocking block is provided with a first inclined surface that cooperates with the first driving column, and the emergency unlocking block is provided with a second inclined surface that cooperates with the second driving column. The locking block is driven to swing by the inclined surface cooperating with the driving column, and the structure is simpler.

[0009] As a further improvement, the emergency unlocking block has two elastic feet extending downward, and the base is provided with guide ribs for the elastic feet to engage with, and the elastic feet are engaged with the guide ribs and can slide up and down along the guide ribs. The engagement of the elastic feet with the guide ribs can realize the rapid installation of the emergency unlocking block on the base.

[0010] In order to ensure that the emergency unlocking block slides smoothly on the back of the base and to provide a verified installation position for the spring, the top surface of the above-mentioned base is provided with a concave slide groove arranged in the up and down directions, and the emergency unlocking block is provided with a raised guide plate, which is constrained to slide up and down in the slide groove; the emergency unlocking block is provided with a raised spring mounting column, the spring is sleeved on the spring mounting column, the lower end of the spring rests on the bottom wall of the slide groove, and the upper end of the spring rests on the emergency unlocking block.

[0011] A further improvement includes a cover for fixing on the back of the door body, the cover has an installation cavity with an open lower end, the inner bottom surface of the installation cavity has a raised first installation column, a second installation column, a first installation groove and a second installation groove, the lock tongue is rotatably mounted on the first installation column, the locking block is rotatably mounted on the second installation column, the motor is arranged in the first installation groove, the main unlocking block is constrained on the second installation groove, the base is fixed on the inner bottom surface of the installation cavity, and constrains the lock tongue, locking block, motor and main unlocking block. This electronic lock uses the inherent cover in the safe as a part of the lock shell, and constrains the lock tongue, locking block, motor and main unlocking block, without the need to set up another half of the lock shell, further simplifying the structure of the electronic lock.

[0012] Preferably, the base is fixed to the inner bottom surface of the installation cavity by screws.

[0013] As an improvement, the inner bottom surface of the installation cavity further has a raised first baffle and a second baffle. When the lock tongue rotates to extend out of the base, the first baffle blocks the lock tongue, and when the locking block rotates to lock the lock tongue, the second baffle blocks the locking block. The first baffle constrains the swing of the lock tongue at the extreme position, and the second baffle constrains the swing of the locking block at the extreme position, thereby avoiding the need to set a constraining part on the base and facilitating assembly.

[0014] Compared with the prior art, the advantages of the utility model are: the main unlocking block is driven by the motor to move, and then the locking block is driven to swing to release the lock of the lock tongue, and the second torsion spring is used to reset the locking block to the locked position, and the rotation of the motor can be controlled by the electronic control part to complete the unlocking; when the motor is out of power or damaged, the emergency unlocking block can be pushed to move by the mechanical fork, driving the locking block to move and contact the lock of the lock tongue. After unlocking, the emergency unlocking block is reset under the action of the spring, and the emergency opening function is finally completed. The various components in this electronic lock are installed on the top and bottom surfaces of the base, and the lock shell structure of the electronic lock is simpler, and the main unlocking block and the emergency unlocking block are located on both sides of the base, making the layout of the electronic lock more reasonable and compact, so that the layout is not inconvenient on one installation surface, which is conducive to the miniaturization of electronic lock products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of the utility model (emergency opening);

[0017] Figure 3 It is a cross-sectional view of an embodiment of the utility model along the length direction of the locking block;

[0018] Figure 4It is a cross-sectional view of an embodiment of the utility model along the axial direction of the motor;

[0019] Figure 5 This is a partial three-dimensional enlarged view of the embodiment of the utility model after the base is removed;

[0020] Figure 6 It is a three-dimensional exploded view of an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] See also Figures 1 to 6 Shown is a preferred embodiment of the utility model.

[0023] An electronic lock with emergency function, comprising

[0024] The base 1 has a top surface 1a and a bottom surface 1b, and a strip hole 1c penetrating the top surface 1a and the bottom surface 1b is formed on the base 1.

[0025] The locking tongue 2 is rotatably mounted on the bottom surface 1b of the base 1. The locking tongue 2 can be extended or retracted into the side of the base 1 by rotation. The locking tongue 2 is kept extending out of the base 1 by the first torsion spring 3a. The locking tongue 2 is in the shape of an eccentric cam.

[0026] The locking block 5 is rotatably mounted on the bottom surface 1b of the base 1. The rotation of the locking block 5 can lock or unlock the lock tongue 2. The locking block 5 is kept rotating in the direction of locking the lock tongue 2 by the second torsion spring 3b. The locking block 5 is provided with a first driving column 51 protruding inwardly and a second driving column 52 protruding outwardly. The second driving column 52 passes through the strip hole 1c and then extends out of the top surface 1a of the base 1; when the locking block 5 is rotated to abut against the bottom of the lock tongue 2 to lock the lock tongue 2, the lock tongue 2 maintains a tendency to extend out of the side of the base 1; when the locking block 5 is rotated to leave the bottom of the lock tongue 2, the lock tongue is locked by contact, and the lock tongue 2 can be swung and retracted into the side of the base 1.

[0027] The main unlocking block 6 is constrained on the bottom surface 1b of the base 1 and can move up and down. The downward movement of the main unlocking block 6 can cooperate with the first driving column 51 to drive the locking block 5 toward the unlocking direction. The up and down movement of the main unlocking block 6 is driven by the motor 8; specifically, a driving screw 81 is installed on the output shaft of the motor 8, and the main unlocking block 6 is provided with an internal thread 61 that cooperates with the external thread of the driving screw 81. The main unlocking block 6 is provided with a first inclined surface 6a that cooperates with the first driving column 51.

[0028] The emergency unlocking block 7 is constrained on the top surface 1a of the base 1 and can move up and down. The emergency unlocking block 7 is kept in an upward movement trend by the spring 4. The emergency unlocking block 7 can move downward under the action of an external force. The downward movement of the emergency unlocking block 7 can cooperate with the second driving column 52 to drive the locking block 5 toward the unlocking direction. The emergency unlocking block 7 is provided with a second inclined surface 7a that cooperates with the second driving column 52.

[0029] The emergency unlocking block 7 has two elastic clamping feet 71 extending downwards. The base 1 is provided with a guide rib 11 for the elastic clamping feet 71 to be clamped. The elastic clamping feet 71 are clamped on the guide rib 11 and can slide up and down along the guide rib 11.

[0030] The top surface 1a of the base 1 is provided with a concave slide groove 1d arranged in the up and down direction, the emergency unlocking block 7 is provided with a raised guide plate 72, the guide plate 72 is constrained in the slide groove 1d and can slide up and down, the emergency unlocking block 7 is provided with a raised spring mounting column 73, the spring 4 is sleeved on the spring mounting column 73, the lower end of the spring 4 abuts against the bottom wall of the slide groove 1d, and the upper end of the spring 4 abuts against the emergency unlocking block 7.

[0031] It also includes a cover 9 for fixing on the back of the door body, the cover 9 has a mounting cavity Q with an open lower end, the inner bottom surface of the mounting cavity Q has a raised first mounting column 91, a second mounting column 92, a first mounting groove 93 and a second mounting groove 94, the lock tongue 2 is rotatably mounted on the first mounting column 91, the locking block 5 is rotatably mounted on the second mounting column 92, the motor 8 is arranged in the first mounting groove 93, the main unlocking block 6 is constrained on the second mounting groove 94, the base 1 is fixed to the inner bottom surface of the mounting cavity Q by screws, and the lock tongue 2, the locking block 5, the motor 8 and the main unlocking block 6 are constrained. The inner bottom surface of the mounting cavity Q also has a raised first baffle 95 and a second baffle 96, when the lock tongue 2 rotates to extend out of the base 1, the first baffle 95 blocks the lock tongue 2, and when the locking block 5 rotates to lock the lock tongue 2, the second baffle 96 blocks the locking block 5.

[0032] During assembly, first, rotate and install the lock tongue 2 on the first mounting column 91, rotate and install the locking block 5 on the second mounting column 92, the motor 8 is arranged in the first mounting groove 93, and the main unlocking block 6 is constrained on the second mounting groove 94, and then fix the base 1 to the inner bottom surface of the mounting cavity Q by screws, and constrain the lock tongue 2, the locking block 5, the motor 8 and the main unlocking block 6; then, clamp the emergency unlocking block 7 on the guide rib 11 through the elastic clamping foot 71, and finally install the spring 4 to complete the assembly.

[0033] The motor 8 drives the main unlocking block 6 to move, and then drives the locking block 5 to swing to release the lock of the lock tongue 2. The second torsion spring 3b acts to enable the locking block 5 to reset and swing to the locked position, and the rotation of the motor 8 can be controlled by the electronic control part to complete the electronic unlocking. When the motor 8 is out of power or damaged, the emergency unlocking block 7 can be pushed to move by the mechanical fork. The mechanical fork can be driven by the mechanical lock provided on the door body to drive the locking block 5 to move and contact the lock of the lock tongue 2. After the unlocking is completed, the emergency unlocking block 7 is reset under the action of the spring 4. Figure 2 As shown, the emergency opening function is finally completed.

[0034] It should be noted that in the description of this embodiment, the terms "front, back", "left, right", "inside, outside", "upper, lower" and the like indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. An electronic lock with emergency function, characterized in that: include A base (1), the base (1) having a top surface (1a) and a bottom surface (1b), and a strip-shaped hole (1c) penetrating the top surface (1a) and the bottom surface (1b) is formed on the base (1); A lock tongue (2) is rotatably mounted on the bottom surface (1b) of the base (1), and the lock tongue (2) can be extended or retracted into the side of the base (1) by rotation. The lock tongue (2) is maintained in a tendency to extend out of the base (1) by the action of a first torsion spring (3a); A locking block (5) is rotatably mounted on the bottom surface (1b) of the base (1); the rotation of the locking block (5) can lock or unlock the lock tongue (2); the locking block (5) is kept rotating in the direction of locking the lock tongue (2) by the action of a second torsion spring (3b); a first driving column (51) protruding inwardly and a second driving column (52) protruding outwardly are provided on the locking block (5); the second driving column (52) passes through the strip hole (1c) and then protrudes out of the top surface (1a) of the base (1); A main unlocking block (6) is constrained on the bottom surface (1b) of the base (1) and can move up and down. The downward movement of the main unlocking block (6) can cooperate with the first driving column (51) to drive the locking block (5) toward the unlocking direction. The upward and downward movement of the main unlocking block (6) is driven by a motor (8); The emergency unlocking block (7) is constrained on the top surface (1a) of the base (1) and can move up and down. The emergency unlocking block (7) is kept in an upward movement trend by the action of a spring (4). The emergency unlocking block (7) can move downward under the action of an external force. The downward movement of the emergency unlocking block (7) can cooperate with the second driving column (52) to drive the locking block (5) in an unlocking direction.

2. The electronic lock with emergency function according to claim 1, characterized in that: A driving screw (81) is mounted on the output shaft of the motor (8), and an internal thread (61) matching the external thread of the driving screw (81) is provided on the main unlocking block (6).

3. The electronic lock with emergency function according to claim 1, characterized in that: The main unlocking block (6) is provided with a first inclined surface (6a) cooperating with the first driving column (51), and the emergency unlocking block (7) is provided with a second inclined surface (7a) cooperating with the second driving column (52).

4. The electronic lock with emergency function according to claim 1, characterized in that: The emergency unlocking block (7) has two elastic clamping feet (71) extending downwards, and the base (1) is provided with a guide rib (11) for the elastic clamping feet (71) to be clamped, and the elastic clamping feet (71) are clamped on the guide rib (11) and can slide up and down along the guide rib (11).

5. The electronic lock with emergency function according to claim 1, characterized in that: The top surface (1a) of the base (1) is provided with a concave slide groove (1d) arranged in the up-down direction, the emergency unlocking block (7) is provided with a protruding guide plate (72), the guide plate (72) is constrained to slide up and down in the slide groove (1d), the emergency unlocking block (7) is provided with a protruding spring mounting column (73), the spring (4) is sleeved on the spring mounting column (73), the lower end of the spring (4) abuts against the bottom wall of the slide groove (1d), and the upper end of the spring (4) abuts against the emergency unlocking block (7).

6. The electronic lock with emergency function according to any one of claims 1 to 5, characterized in that: It also includes a cover (9) for fixing on the back of the door body, the cover (9) has an installation cavity (Q) with an open lower end, the inner bottom surface of the installation cavity (Q) has a protruding first installation column (91), a second installation column (92), a first installation groove (93) and a second installation groove (94), the lock tongue (2) is rotatably mounted on the first installation column (91), the locking block (5) is rotatably mounted on the second installation column (92), the motor (8) is arranged in the first installation groove (93), the main unlocking block (6) is constrained on the second installation groove (94), and the base (1) is fixed on the inner bottom surface of the installation cavity (Q) and constrains the lock tongue (2), the locking block (5), the motor (8) and the main unlocking block (6).

7. The electronic lock with emergency function according to claim 6, characterized in that: The base (1) is fixed on the inner bottom surface of the installation cavity (Q) by means of screws.

8. The electronic lock with emergency function according to claim 6, characterized in that: The inner bottom surface of the installation cavity (Q) further comprises a protruding first baffle (95) and a second baffle (96); when the lock tongue (2) is rotated to extend out of the base (1), the first baffle (95) blocks the lock tongue (2); when the locking block (5) is rotated to lock the lock tongue (2), the second baffle (96) blocks the locking block (5).

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