Electronic key storage case

Abstract

The present invention discloses an electronic key storage case, comprising a housing, a cavity defined in the housing and configured for storage, a front panel configured for password input and disposed on the front of the housing, a locking mechanism and a control circuit disposed on an inner side of the front panel, characterized in that, the locking mechanism is an electronic lock, and comprises a driving circuit, a lock tongue, and a mounting assembly connected with the lock tongue, the driving circuit is configured to receive unlocking information from the control circuit and control an action on the lock tongue, the mounting assembly comprises a lock bracket, a rotating shaft located on the lock bracket, and a locking hook spring disposed on the rotating shaft, a locking hook groove is provided on the lock tongue, and the lock tongue is matched with the locking hook spring through the driving circuit, to obtain a degree of freedom of rotating forward or reverse rotation with the rotating shaft as a central axis to form two states of the locking hook groove engaged with or separated from the locking pin. In the present invention, the key case is opened automatically in an electronic lock manner, thereby being easier to use, providing a securer lock structure, and avoiding undesirably opening.

Claims

1. An electronic key storage case, comprising: a housing having defined therein a cavity; a front panel configured for password input and disposed on the front of the housing; a locking mechanism and a control circuit disposed on an inner side of the front panel, wherein the locking mechanism is an electronic lock and comprises a driving circuit, a lock tongue and a mounting assembly connected with the lock tongue; wherein the driving circuit is configured to receive unlocking information from the control circuit and control an action on the lock tongue; wherein the mounting assembly comprises a lock bracket, a rotating shaft located on the lock bracket, and a locking hook spring disposed on the rotating shaft, the lock tongue is sleeved on the rotating shaft, an acting end of the locking hook spring is connected with the lock tongue, a locking hook groove is provided on the lock tongue, and the locking hook groove is matched with a locking pin on the housing; wherein the lock tongue cooperates with the locking hook spring through the driving circuit, to obtain a degree of freedom of forward or reverse rotation with the rotating shaft as a central axis, to form two states of the locking hook groove engaged with or separated from the locking pin; and wherein the driving circuit comprises a power supply, a driving control unit and a motor, the driving control unit controls rotation of the motor, wherein a cam structure is disposed on a main shaft outputted by the motor, the rotating shaft of the mounting assembly and the main shaft are disposed in parallel, and an outer edge surface of the lock tongue is connected with the cam structure.

2. The electronic key storage case according to claim 1, wherein the cam structure an oblique notch is provided on a side of the main shaft, and the outer edge surface of the lock tongue is matched with the oblique notch.

3. The electronic key storage case according to claim 1, wherein a locking recess, an unlocking positioning groove, and a limiting protrusion are sequentially provided on the outer edge surface of the lock tongue, the locking recess is matched with an outer edge surface of the main shaft, the unlocking positioning groove is matched with the oblique notch, and the limiting protrusion abuts against a junction between the oblique notch and the outer edge surface of the main shaft to limit the lock tongue to an unlocking state; and the acting end of the locking hook spring is buckled onto the limiting protrusion to enable the lock tongue to rotate toward a side of the main shaft with the rotating shaft as a center.

4. The electronic key storage case according to claim 1, wherein a return spring is sleeved on the main shaft of the motor, and the motor is driven by the power supply to rotate forward, and is returned by a reverse force of the return spring.

5. The electronic key storage case according to claim 1, wherein the locking hook groove on the lock tongue is formed by two groove sidewalls and an inward concave arc surface, one groove sidewall extends outward to form a locking pressing block, the locking pin acts on the locking pressing block to make the lock tongue to rotate reversely, so that the locking hook spring is extended and the state of the locking hook groove engaged with the locking pin is formed.

6. The electronic key storage case according to claim 1, wherein a plurality of fixing screw holes are provided on a back side of the housing, and the housing is fixedly mounted on a wall beside a door by bolts.

7. The electronic key storage case according to claim 1, wherein a hook structure is disposed at the top of the housing, the hook structure comprises a hook located on an outer side of the housing and a hook locking plate located on an inner side of the housing, and an end portion of the hook passes through a mounting hole at the top of the housing and is fixed in the housing by the hook locking plate.

8. The electronic key storage case according to claim 1, wherein a protective cover is disposed on an outer side of the front panel, one end of the protective cover is pivotally connected with a bottom surface of the housing by a pin shaft, and the other end of the protective cover is connected with a top surface of the housing by a buckle in an engaged manner.

9. The electronic key storage case according to claim 1, wherein an LED lighting lamp and a key hook are disposed on an inner wall of the housing, a delay switch of the LED lighting lamp is connected with the control circuit, when the front panel of the housing is opened, the LED lighting lamp is switched on, and the LED lighting lamp is automatically switched off after a delay of the delay switch.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

(2) FIG. 2 is a schematic cross-sectional view of FIG. 1 along an A-A line;

(3) FIG. 3 is a schematic diagram of a housing in an open state according to the first embodiment of the present invention;

(4) FIG. 4 is a schematic diagram of FIG. 3 after a battery and an upper cover plate of a lock structure are removed;

(5) FIG. 5 is a schematic diagram of a lock structure according to the first embodiment of the present invention;

(6) FIG. 6 is a schematic diagram showing a state of a lock tongue engaged with a locking pin according to the first embodiment of the present invention;

(7) FIG. 7 is a schematic semi-cross-sectional view of FIG. 6;

(8) FIG. 8 is a schematic diagram showing a state of the lock tongue separated from the locking pin according to the first embodiment of the present invention;

(9) FIG. 9 is a schematic semi-cross-sectional view of FIG. 8;

(10) FIG. 10 is a schematic structural diagram according to a second embodiment of the present invention; and

(11) FIG. 11 is a schematic diagram of mounting of a hook structure according to the second embodiment of the present invention.

(12) In the figures: 1. Housing; 2. Cavity; 3. Front panel; 4. Locking mechanism; 5. Lock tongue; 6. Mounting assembly; 7. Lock bracket; 8. Rotating shaft; 9. Locking hook spring; 10. Locking hook groove; 11. Locking pin; 12. Battery; 13. Motor; 14. Main shaft; 15. Oblique notch; 16. Locking recess; 17. Unlocking positioning groove; 18. Limiting protrusion; 19. Return spring; 20. Locking pressing block; 21. Protective cover; 22. Fixing screw hole; 23. LED lighting lamp; 24. Key hook; 25. Hook; 26. Hook locking plate; 27. Compression spring.

DETAILED DESCRIPTION OF THE INVENTION

(13) The following further describes the present invention with reference to the accompanying drawings and specific embodiments:

(14) First embodiment: referring to FIG. 1 to FIG. 9, an electronic key storage case comprises a housing 1, a cavity 2 defined in the housing 1 and configured for storage, a front panel 3 configured for password input and disposed on the front of the housing 1, and a locking mechanism 4 and a control circuit disposed on an inner side of the front panel 3. The locking mechanism 4 is an electronic lock, and comprises a driving circuit, a lock tongue 5, and a mounting assembly 6 connected with the lock tongue 5.

(15) The driving circuit is configured to receive unlocking information from the control circuit and control an action on the lock tongue 5.

(16) The mounting assembly 6 comprises a lock bracket 7, a rotating shaft 8 located on the lock bracket 7, and a locking hook spring 9 disposed on the rotating shaft 8. The lock tongue 5 is sleeved on the rotating shaft 8, an acting end of the locking hook spring 9 is connected to the lock tongue 5. A locking hook groove 10 is provided on the lock tongue 5, and the locking hook groove 10 is matched with a locking pin 11 on the housing 1.

(17) The lock tongue 5 cooperates with the locking hook spring 9 through the driving circuit to obtain a degree of freedom of forward or reverse rotation with the rotating shaft 8 as a central axis, to form two states of the locking hook groove 10 engaged with or separated from the locking pin 11.

(18) As shown in FIG. 7 and FIG. 9, the driving circuit comprises a battery 12, a driving control unit, and a motor 13. The driving control unit controls rotation of the motor 13, a cam structure is disposed on a main shaft 14 outputted by the motor 13, the rotating shaft 8 in the mounting assembly 6 and the main shaft 14 are disposed in parallel, and an outer edge surface of the lock tongue 5 is connected with the cam structure. In this embodiment, the cam structure is that, an oblique notch 15 is provided on a side of the main shaft 14, and the outer edge surface of the lock tongue 5 is matched with the oblique notch 15. A distance from the oblique notch 15 to a center of a circle is less than a radius, so that a cam effect is formed. The lock tongue 5 is matched with the outer edge surfaces at different distances to switch from one state to another state. The specific matching manner is as follows:

(19) A locking recess 16, an unlocking positioning groove 17, and a limiting protrusion 18 are sequentially provided on the outer edge surface of the lock tongue 5. The locking recess 16 is matched with an outer edge surface of the main shaft 14, the unlocking positioning groove 17 is matched with the oblique notch 15, and the limiting protrusion 18 abuts against a junction between the oblique notch 15 and the outer edge surface of the main shaft 14 to limit the lock tongue 5 to an unlocking state, and the acting end of the locking hook spring 9 is buckled onto the limiting protrusion 18 to enable the lock tongue 5 to rotate toward a side of the main shaft 14 with the rotating shaft 8 as a center.

(20) When the main shaft 14 rotates forward (rotates clockwise), the oblique notch 15 is turned to the lock tongue 5. Under the acting force of the locking hook spring 9, the lock tongue 5 rotates toward the side of the main shaft 14 from the locking recess 16 to the unlocking positioning groove 17 until abutting against the limiting protrusion 18 as shown in FIG. 9. In this state, the locking hook groove 10 of the lock tongue 5 is separated from the locking pin 11. As shown in FIG. 8, the front panel 3 of the housing 1 is automatically opened under the action of gravity.

(21) On the contrary, when the front panel 3 is closed, the main shaft 14 and the lock tongue 5 need to be returned respectively. A return spring 19 is sleeved on the main shaft 14 of the motor 13 to enable the main shaft 14 to rotate reversely (rotate anticlockwise). The locking hook groove 10 on the lock tongue 5 is formed by two groove sidewalls and an inward concave arc surface. One groove sidewall extends outward to form a locking pressing block 20. The locking pin 11 acts on the locking pressing block 20 to make the lock tongue 5 to rotate reversely, thereby extending the locking hook spring 9, and forming the state of the locking hook groove 10 engaged with the locking pin 11.

(22) When the front panel 3 is shut down, the front panel 3 is closed. Since the locking pin 11 pushes the locking pressing block 20 on the lock tongue 5, the lock tongue 5 is switched from the unlocking positioning groove 17 to the locking recess 16. In this case, the main shaft 14 rotates reversely under the force of the return spring 19, the oblique notch 15 rotates downward, and the outer edge surface of the main shaft 14 abuts against the locking recess 16 of the lock tongue 5. As shown in FIG. 7, the lock tongue 5 is locked and cannot be turned back. In this case, the locking hook groove 10 is engaged with the locking pin 11. As shown in FIG. 6, the front panel 3 of the housing 1 is locked.

(23) In switching between two states of engagement and separation, the locking hook spring 9 and the return spring 19 are mutual cooperated each other, so that the driving circuit only needs to drive the motor 13 to rotate toward one direction without considering a driving force for returning by using a dry cell battery 12 (direct current), leading to simplified driving, convenience in mounting, and a smaller and more compact structure.

(24) As shown in FIG. 2 and FIG. 3, a protective cover 21 is disposed on an outer side of the front panel 3, one end of the protective cover 21 is pivotally connected with a bottom surface of the housing 1 by a pin shaft, and the other end of the protective cover 21 is connected with a top surface of the housing 1 by a buckle in an engaged manner. Dustproof and waterproof protection on the front panel 3 of the housing 1 is achieved. The protective cover 21 is opened to input an unlocking password. A plurality of fixing screw holes 22 are provided on a back side of the housing 1, and the housing 1 is fixedly mounted on a wall beside a door by bolts.

(25) As shown in FIG. 4, an LED lighting lamp 23 and a key hook 24 are disposed on an inner wall of the housing 1. A delay switch of the LED lighting lamp 23 is connected with the control circuit. When the front panel of the housing 1 is opened, the LED lighting lamp 23 is switched on, and the LED lighting lamp is automatically switched off after a delay of the delay switch.

(26) An emergency socket is further provided on the outer side of the housing 1. When the battery 12 is low, an external power supply (for example, an existing mobile power supply) can be plugged in the emergency socket, so that an emergence start is implemented. After a correct password is inputted, the housing 1 is opened, and the battery is replaced with a new battery 12, to resume normal use.

(27) Second embodiment: referring to FIG. 10 and FIG. 11, an electronic key storage case comprises a housing 1, a cavity 2 defined in the housing 1 and configured for storage, a front panel 3 configured for password input and disposed on the front of the housing 1, and a locking mechanism 4 and a control circuit disposed on an inner side of the front panel 3. The locking mechanism 4 is an electronic lock, and comprises a driving circuit, a lock tongue 5, and a mounting assembly 6 connected with the lock tongue 5. In this embodiment, the electronic key storage case has similar structure with that of the first embodiment, except that, an alternating current may be chosen as input of the driving circuit, so that positive and negative paths of the motor is controlled by the driving control unit to achieve forward and reverse rotation of the main shaft. Therefore, in this embodiment, there is no need to use the return spring to return the main shaft. This solution is not as simple in structure as the first embodiment, and double springs in the first embodiment are preferred.

(28) As shown in FIG. 10, a hook structure is disposed at the top of the housing 1. The hook structure comprises a hook 25 located on an outer side of the housing 1 and a hook locking plate 26 located on an inner side of the housing 1. An end portion of the hook 25 passes through a mounting hole at the top of the housing 1 and is fixed in the housing 1 by the hook locking plate 26. As shown in FIG. 11, if the hook locking plate 26 is moved, the hook 25 may come out. The hook 25 is clamped by a compression spring 27 during locking, to achieve a connection between the hook 25 and the housing 1. If a mounting manner using the hook structure is adopted, there is no need to open holes on the housing 1 and a mounting wall, and the mounting is more convenient.