Electronic door lock of vending machine

Abstract

The utility model discloses an electronic door lock of a vending machine, and relates to the field of locks. The device comprises a shell, an emergency power supply is arranged in the shell, and the emergency power supply is in signal connection with a controller; at least one spring bolt is supported in the shell through an elastic component and assembled in the shell in an up-down sliding mode, one end of the spring bolt penetrates out of the shell, the other end of the spring bolt is rotationally hinged to a first-section connecting rod, the free end of the first-section connecting rod is rotationally hinged to a second-section connecting rod, and the second-section connecting rod is horizontally arranged in the shell in a sliding mode. A magnetic attraction block is fixedly assembled at the free end of the two-section connecting rod and matched with an electromagnet in a magnetic attraction mode, and the electromagnet is fixedly installed on the inner wall of the shell and is in signal connection with the controller. The anti-theft lock has the advantages that dust is collected in the shell, the electromagnet is used for driving the connecting rod to drive the lock tongue to be opened and closed, the connecting rod assembly can adapt to the installation position and the installation space, use flexibility is guaranteed, emergency operation of the electromagnet is guaranteed through the emergency power source, and use reliability is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of lockset, relates to vending machine lockset, concretely relates to an electronic door lock of vending machine. BACKGROUND

[0002] Vending machine is a kind of commercial automation equipment, and door lock is one of important fittings on vending machine.The conventional mechanical door lock usually needs to use key to switch, which limits its remote management capability, so the mechanical door lock is not suitable for application on vending machine.Electronic door lock has the state of remote control door lock, meets the operation environment of long-term unattended vending machine, so electronic door lock will be assembled on vending machine.

[0003] The locking and unlocking mechanism of the existing electronic door lock is roughly divided into two categories: power-on unlocking and power-off unlocking.When using power-off unlocking as the switching mechanism of electronic door lock, the lock tongue is in the locked state in the power-on state, but when a circuit failure occurs, the lock tongue will be powered off and opened, which will cause loss of the vending machine.Therefore, an emergency power supply needs to be connected to the door lock to provide emergency power to the lock tongue and ensure the working state of the lock tongue.

[0004] When using an electromagnet to control the switching of the lock tongue, the electromagnet is usually used to directly attract the lock tongue to control the switching of the door lock.Because the lock tongue and the electromagnet need to be integrated together to enable the electromagnet to directly attract the lock tongue, and an elastic member is also needed to support the reset, it is relatively difficult to compress the volume, and when installing, it is usually limited by the installation space, which limits its use. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of electronic door locks of vending machine for solving the technical problems of emergency locking and installation limitation of electronic door lock, provide a kind of electronic door locks of vending machine.Lock tongue is integrated in shell, and the switching of lock tongue is driven by electromagnet driving connecting rod, connecting rod assembly can adapt to installation position and installation space, ensure use flexibility, and electromagnet ensures emergency operation by emergency power supply, improve use reliability.

[0006] The utility model discloses a kind of electronic door locks of vending machine, including controller and shell, controller is built-in in shell, and emergency power supply is built-in in shell, and emergency power supply is connected with the signal of controller;At least one lock tongue is supported in shell by elastic member, lock tongue is slidably assembled in shell, and the end of lock tongue passes out shell, the other end of lock tongue is rotatably connected with a section of connecting rod, the free end of a section of connecting rod is rotatably connected with two sections of connecting rod, two sections of connecting rod are horizontally slidably arranged in shell, and the free end of two sections of connecting rod is fixedly assembled with magnetic block, magnetic block is magnetically attracted with electromagnet, electromagnet is fixedly installed with the inner wall of shell, and is connected with the signal of controller.

[0007] When the electromagnet is not energized, the latch is supported by the elastic component and retracted into the housing, leaving the door open. A section of the connecting rod hinged to the latch is tilted. When the door is closed, the electromagnet is energized, generating magnetic attraction. The magnetic block is pulled by this attraction, causing the two sections of the connecting rod to move horizontally along the inner wall of the housing. This pulls on one section of the connecting rod, causing both ends of the first section to rotate along the two sections and the latch, moving from the tilted position to a vertical position. Because the height of the two sections of the connecting rod is fixed, the first section pushes the latch outwards, inserting it into the keyhole and locking the door. When an external circuit malfunctions and cuts off power to the electromagnet, the controller switches the external power supply to an emergency power supply, keeping the electromagnet running and preventing the latch from unlocking, ensuring safety. The controller also sends a signal indicating that the external circuit is off, allowing service personnel to respond promptly.

[0008] To further optimize this technical solution, the emergency power supply includes a battery box, which is fixed inside the outer shell by bolts, and reinforcing ribs are provided inside both the battery box and the outer shell; the battery box integrates battery cells, and piezoelectric ceramics are evenly distributed on the outer wall of the battery box, and the piezoelectric ceramics are connected to the controller via circuit signals.

[0009] The emergency power supply consists of a battery box enclosing the battery cells. To ensure safety, reinforcing ribs are installed inside the battery box and the outer casing to enhance their strength. Piezoelectric ceramics are evenly distributed on the battery box. When the outer casing is damaged by external force, the force will exert pressure on the piezoelectric ceramics, causing them to generate electrical signals. These signals are transmitted to the controller via a circuit. The controller then sends out a signal, and as the number of signals transmitted by the piezoelectric ceramics increases, the controller cuts off the power supply to the electromagnet, allowing the door lock to open and minimizing damage.

[0010] To further optimize this technical solution, the locking tongue includes a straight rod, the head of which protrudes from the outer shell and is configured as a constricted structure. The tail of the straight rod is provided with a connecting part, the diameter of which is larger than the diameter of the straight rod, and is rotatably hinged to a connecting rod. The connecting part of the straight rod is also connected to an elastic member.

[0011] The straight rod structure of the latch, with its constricted head protruding from the outer casing and inserting into the lock hole, simplifies the insertion process. After insertion, the straight rod is guided, ensuring smooth engagement. The diameter of the connecting part of the straight rod is larger than the main body diameter to prevent complete ejection and to provide an assembly position for the elastic component, ensuring flexibility in use.

[0012] To further optimize this technical solution, the elastic component is a spring, which is sleeved on the outside of the straight rod, with one end of the spring abutting against the connecting part and the other end abutting against the outer shell.

[0013] The straight rod structure of the locking tongue makes it easy for the spring to be fitted onto the straight rod, and the protruding outer edge of the connecting part provides support space for the spring. The other end of the spring abuts against the outer shell, thereby supporting the straight rod and making its structure more compact, ensuring reliable use.

[0014] To further optimize this technical solution, the outer shell is provided with a through hole for the locking tongue to slide, a bushing is fitted inside the through hole, and the straight rod is slidably installed with the bushing.

[0015] The through-hole on the housing provides movement space for the straight rod latch. The bushing inside the through-hole slides with the straight rod. The bushing reinforces the sliding of the straight rod, ensuring its reliability. The bushing also lubricates and seals the straight rod, ensuring smooth and stable sliding, enhancing the sealing of the housing, reducing damage to components, and extending its service life.

[0016] To further optimize this technical solution, the first connecting rod and the second connecting rod are rotatably hinged by a hinge shaft. The hinge shaft is fixedly assembled with the second connecting rod and rotatably hinged with the first connecting rod. The hinge shaft is also horizontally slidably assembled with the outer shell by means of an assembly.

[0017] The first and second connecting rods are hinged together by a hinge shaft. The fixed assembly of the hinge shaft with the second connecting rod and the rotational hinge with the first connecting rod ensures the rotational hinge effect and allows the hinge shaft to drive the second connecting rod to move horizontally and linearly within the housing with the help of the assembly. This makes the structure simpler and more compact, and ensures flexibility in use.

[0018] To further optimize this technical solution, the assembly includes a slide rail, which is fixedly installed on the inner wall of the housing. Limiting components are respectively installed at both ends of the slide rail, and a slider is fitted on the slide rail. The slider is fixedly installed on the hinge shaft.

[0019] The slide rail is fixedly installed inside the housing, and the slider is fixedly installed on the hinge shaft. The slider is matched with the slide rail. The slider moves along the slide rail, driving the hinge shaft and the two-section connecting rod to move horizontally, thus driving the load of the two-section connecting rod. This allows the electromagnet to pull the two-section connecting rod through the magnetic block in a labor-saving and smooth manner.

[0020] To further optimize this technical solution, the slide rail is a grooved slide rail, the slider is slidably installed with the grooved slide rail, and the limiting component is a cover set at both ends of the grooved slide rail, the cover is tightened and fixed with the grooved slide rail by bolts.

[0021] The grooved slide rail has a simple structure, and the two ends of the grooved slide rail are sealed with bolts to prevent the slider from slipping out of the grooved slide rail and ensure safety during use.

[0022] The beneficial effects of this utility model are as follows:

[0023] 1. After the external power supply supplies power to the electromagnet, it generates a magnetic force and attracts the magnetic block of the two-section connecting rod, causing the two-section connecting rod to move horizontally. The hinged first section of the two-section connecting rod drives the second section to rotate from an inclined state to a vertical state. In addition, the height position of the two-section connecting rod is fixed, thereby pushing the bolt outward to perform the locking operation. The electromagnet and the magnetic block remain attracted, keeping the door lock in a locked state. The structure is simple and the use is stable and reliable.

[0024] 2. In the event of an external power failure, the controller will provide emergency power to the electromagnet through the emergency power supply to keep the electromagnet running and ensure the normal use of the door lock. The controller will also transmit the fault signal to the outside so that service personnel can handle the fault in a timely manner. The battery box of the emergency power supply is equipped with piezoelectric ceramics. When the outer shell is damaged by external force, the external force will exert pressure on the piezoelectric ceramics, causing the piezoelectric ceramics to generate an electrical signal, which will be transmitted to the controller. The controller will also transmit the signal so that service personnel can handle the fault in a timely manner.

[0025] 3. The locking tongue has a straight rod structure with a tapered head to reduce the cross-sectional area, making it easier to insert into the lock hole. After being inserted into the lock hole, the straight rod is guided to ensure a smoother locking and connection. The diameter of the connecting part of the straight rod is larger than the diameter of the straight rod body to prevent the straight rod from being completely pushed out of the housing, ensuring safety and providing a force point for the spring assembly. It is flexible and compact in use.

[0026] 4. The first and second connecting rods are hinged together by a hinge shaft. The hinge shaft is fixedly installed with the second connecting rod and rotatably hinged with the first connecting rod. This allows for efficient use. The hinge shaft is assembled with the slide rail inside the housing via a slider. Its structure is simple, reduces assembly difficulty, and ensures smooth horizontal sliding of the second connecting rod and low driving resistance, making it flexible to use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the electronic door lock of the vending machine in this embodiment.

[0028] Figure 2 This is a schematic diagram of the front structure of the electronic door lock of the vending machine in this embodiment;

[0029] Figure 3 This is a schematic diagram of the internal structure of the electronic door lock of the vending machine in this embodiment;

[0030] Figure 4 This is a schematic diagram of the assembly structure of the locking tongue and the outer shell in this embodiment;

[0031] Figure 5 This is a schematic diagram of the assembly of the electromagnet and slide rail with the housing in this embodiment;

[0032] Figure 6This is a schematic diagram of the assembly structure of the latch and linkage assembly in this embodiment;

[0033] Figure 7 This is a schematic diagram of the assembly structure of the slide rail and slider in this embodiment;

[0034] Figure 8 This is a schematic diagram of the assembly structure of the emergency power supply and piezoelectric ceramic in this embodiment.

[0035] In the diagram, 1 is the outer casing; 101 is the through hole; 102 is the bushing; 2 is the emergency power supply; 201 is the battery box; 202 is the battery cell; 203 is the piezoelectric ceramic; 3 is the locking tongue; 301 is the straight rod; 302 is the head; 303 is the connecting part; 4 is the first-stage connecting rod; 5 is the second-stage connecting rod; 6 is the magnetic block; 7 is the electromagnet; 8 is the spring; 9 is the hinge shaft; 10 is the slide rail; 1001 is the cover; and 11 is the slider. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0037] Please see the appendix Figures 1-3 An electronic door lock for a vending machine includes a housing 1, a controller built into the housing 1, a protective cover covering the controller, and the protective cover being tightened and fixed inside the housing 1 by bolts. At least one latch 3 is provided inside the housing 1. The latch 3 is mounted inside the housing 1 by sliding up and down. The latch 3 is supported inside the housing 1 by an elastic member to prevent the latch 3 from sliding arbitrarily. One end of the latch 3 protrudes from the housing 1. That is, when the latch 3 is a single latch, the latch 3 protrudes from the top or bottom of the housing 1. When the latch 3 is a double latch, the latch 3 can be distributed vertically inside the housing 1 and protrudes from the top and bottom of the housing 1 respectively. The other end of the latch 3 is connected to a linkage structure for driving its vertical sliding.

[0038] Please see the appendix Figures 4-6 The latch 3 can be a straight rod 301 structure. The head 302 of the straight rod 301 protrudes through the outer shell 1. The outer shell 1 is provided with a through hole 101 for the straight rod 301 to slide, and a bushing 102 is fitted inside the through hole 101. The bushing 102 is slidably connected to the straight rod 301. The bushing 102 ensures the stability of the straight rod 301 sliding up and down, and ensures the sealing between the straight rod 301 and the outer shell 1. The head 302 of the straight rod 301 has a constricted structure. When the straight rod 301 is inserted into the lock hole to make the door lock run, the head 302 of the straight rod 301 first contacts the lock hole. The constricted structure of the head 302 will increase the contact area with the lock hole, so that the head 302 can be smoothly inserted into the lock hole. When moving along the lock hole, it guides the straight rod 301, so that the straight rod 301 can be smoothly inserted into the lock hole, ensuring smooth and flexible operation.

[0039] Please see the appendix Figure 3 AppendixFigure 6 The tail of the straight rod 301 is provided with a connecting part 303. The diameter of the connecting part 303 is larger than the diameter of the straight rod 301, thereby preventing the straight rod 301 from slipping out of the through hole 101. The elastic member can be a spring 8 according to the structure of the straight rod 301 of the latch 3. The spring 8 is sleeved on the outside of the straight rod 301. The connecting part 303 protrudes from the outer edge of the straight rod 301 to provide support space for the spring 8. The other end of the spring 8 abuts against the outer shell 1, thereby supporting the straight rod 301 and making the structure compact.

[0040] Please see the appendix Figure 4 Appendix Figure 6 The connecting part 303 of the straight rod 301 is assembled with the connecting rod. The connecting part 303 of the straight rod 301 is rotatably hinged to a first connecting rod 4. The free end of the first connecting rod 4 is rotatably hinged to a second connecting rod 5. The second connecting rod 5 is horizontally slidably disposed in the outer casing 1. The first connecting rod 4 and the second connecting rod 5 are rotatably hinged by a hinge shaft 9. The hinge shaft 9 is fixedly installed with the second connecting rod 5 and rotatably hinged with the first connecting rod 4, thereby realizing the hinged assembly of the first connecting rod 4 and the second connecting rod 5. At the same time, the hinge shaft 9 is slidably disposed in the outer casing 1.

[0041] Please see the appendix Figure 4 Appendix Figure 5 Appendix Figure 7 The outer casing 1 contains a slide rail 10 and a slider 11. The slider 11 is fitted onto the slide rail 10. After the slider 11 is fixedly installed with the hinge shaft 9, it drives the two-section connecting rod 5 to move horizontally within the outer casing 1. The slide rail 10 can be a grooved slide rail 10. By placing the slider 11 inside the grooved slide rail 10 and sliding it along it, the two-section connecting rod 5 moves horizontally. Both ends of the grooved slide rail 10 are fitted with caps 1001 by bolts. The caps 1001 prevent the slider 11 from slipping out of the grooved slide rail 10. To ensure safety, a magnetic block 6 is fixedly mounted on the free end of the two-section connecting rod 5, and an electromagnet 7 is fixedly installed on the inner wall of the outer shell 1. The electromagnet 7 is connected to the controller signal through a circuit. When the electromagnet 7 is energized, it generates magnetic attraction and attracts the magnetic block 6. At the same time, when the electromagnet 7 attracts the magnetic block 6, the two-section connecting rod 5 pulls the first-section connecting rod 4, pushing the straight rod 301 out of the outer shell 1 for locking. The attraction between the electromagnet 7 and the magnetic block 6 keeps the straight rod 301 in a locked state.

[0042] Please see the appendix Figure 3When the electromagnet 7 is energized to keep the straight rod 301 locked, when the electromagnet 7 encounters a power outage, the controller activates the emergency power supply 2 built into the outer casing 1 to supply power to the electromagnet 7, ensuring the normal operation of the electromagnet 7 and keeping the door lock locked. The controller also sends out a power outage signal for the equipment so that service personnel can perform timely maintenance. The emergency power supply 2 includes a battery box 201, which is fixed inside the outer casing 1 with bolts. To ensure safety, the battery box 201 is equipped with reinforcing ribs, and the outer casing 1 is also equipped with reinforcing ribs to ensure safety.

[0043] Please see the appendix Figure 8 The battery box 201 integrates a battery cell 202. The battery cell 202 supplies power to the electromagnet 7 after the external power supply to the electromagnet 7 is cut off. Piezoelectric ceramics 203 are evenly distributed on the outer wall of the battery box 201. The piezoelectric ceramics 203 are attached to the outer wall of the battery box 201, and the power lines and signal lines of the piezoelectric ceramics 203 are connected to the controller after being arranged. When the outer shell 1 is damaged, the pressure exerted on the piezoelectric ceramics 203 will generate an electrical signal. The electrical signal is transmitted to the controller through the circuit, and the controller transmits the signal outward so that service personnel can check and maintain it in time to ensure safe use.

[0044] The working principle of the electronic door lock of this vending machine is as follows: The outer casing 1 serves as the frame of the vending machine door. The latch 3, which slides within the outer casing 1, is supported by a spring 8, causing the latch 3 to retract into the outer casing 1, thus opening the door. When the door locks the cabinet door, the controller connects the electromagnet 7 to an external power source, energizing the electromagnet 7 to generate magnetic attraction, which in turn attracts the magnetic block 6. The magnetic block 6, attracted by the magnetic attraction, pulls the two-section connecting rod 5 to move within the outer casing 1. The hinge shaft 9 on the two-section connecting rod 5 is assembled with the slide rail 10 via a slider 11, allowing the two-section connecting rod 5 to move only horizontally. During movement, the two-section connecting rod 5 pulls on the first-section connecting rod 4. The hinge at its connection point, along with the sliding assembly of the latch 3 and the outer casing 1, causes the first-section connecting rod 4 to rotate along the connection 303 between the two-section connecting rod 5 and the latch 3 of the straight rod 301. Since the connecting rod 4 is initially tilted, after being pulled vertically, it pushes the straight rod 301 (lock tongue 3) vertically, thus pushing the lock tongue 3 out of the outer casing 1 and inserting it into the lock hole, closing the cabinet door. The attraction between the electromagnet 7 and the magnetic block 6 keeps the lock tongue 3 in the pushed-out state, ensuring the cabinet door is closed. The head 302 of the straight rod 301 (lock tongue 3) has a constricted structure, which makes insertion into the lock hole easier and guides the straight rod 301 (lock tongue 3), ensuring smooth insertion. If the external power supply to the electromagnet 7 fails, the controller switches to the emergency power supply 2 inside the outer casing 1 to power the electromagnet 7 and attract the lock tongue 3, keeping it locked. The controller also sends a power failure signal to allow for timely intervention. When the external power supply is restored, the controller replenishes power to the emergency power supply 2, maintaining its charge and ensuring normal emergency operation. The battery box 201 of the emergency power supply 2 is evenly distributed with piezoelectric ceramics 203. When the outer shell 1 is damaged, the piezoelectric ceramics 203 will be pressed by external force, thereby generating an electrical signal. The electrical signal is transmitted to the controller through the circuit, and the controller will also send out a signal so that personnel can deal with it in time and ensure the safety of use.

Claims

1. An electronic door lock for a vending machine, comprising a controller, characterized in that: It also includes a housing (1), the controller is built into the housing (1), and the housing (1) has an emergency power supply (2) built into it. The emergency power supply (2) is connected to the controller signal. At least one locking tongue (3) is supported in the housing (1) by means of an elastic member. The locking tongue (3) is slidably mounted in the housing (1), and one end of the locking tongue (3) extends out of the housing (1). The other end of the locking tongue (3) is rotatably hinged to a connecting rod (4). The free end of the connecting rod (4) is rotatably hinged to two connecting rods (5). The two connecting rods (5) are horizontally slidably set in the housing (1), and the free end of the two connecting rods (5) is fixedly mounted with a magnetic block (6). The magnetic block (6) is magnetically attached to an electromagnet (7). The electromagnet (7) is fixedly installed on the inner wall of the housing (1) and is connected to the controller signal.

2. The electronic door lock of a vending machine according to claim 1, characterized in that: The emergency power supply (2) includes a battery box (201), which is fixed inside the outer shell (1) by bolts, and reinforcing ribs are provided inside the battery box (201) and the outer shell (1); the battery box (201) integrates a battery cell (202), and piezoelectric ceramics (203) are evenly distributed on the outer wall of the battery box (201), and the piezoelectric ceramics (203) are connected to the controller through line signals.

3. The electronic door lock of a vending machine according to claim 1, characterized in that: The latch (3) includes a straight rod (301), the head (302) of the straight rod (301) protrudes from the outer shell (1) and is set as a closed structure, the tail of the straight rod (301) is provided with a connecting part (303), the diameter of the connecting part (303) is larger than the diameter of the straight rod (301), and it is rotatably hinged to a connecting rod (4), and the connecting part (303) of the straight rod (301) is connected to an elastic member.

4. The electronic door lock of a vending machine according to claim 3, characterized in that: The elastic component is a spring (8), which is sleeved on the outside of the straight rod (301). One end of the spring (8) abuts against the connecting part (303), and the other end abuts against the outer shell (1).

5. The electronic door lock of a vending machine according to claim 3, characterized in that: The outer shell (1) has a through hole (101) for sliding the locking tongue (3), and a bushing (102) is fitted inside the through hole (101), and the straight rod (301) is slidably installed with the bushing (102).

6. The electronic door lock of a vending machine according to claim 1, characterized in that: The first connecting rod (4) and the second connecting rod (5) are rotatably hinged by means of a hinge shaft (9). The hinge shaft (9) is fixedly assembled with the second connecting rod (5) and rotatably hinged with the first connecting rod (4). The hinge shaft (9) is horizontally slidably assembled with the outer shell (1) by means of an assembly.

7. The electronic door lock of a vending machine according to claim 6, characterized in that: The assembly includes a slide rail (10), which is fixedly installed on the inner wall of the outer shell (1). Limiting components are respectively installed at both ends of the slide rail (10). A slider (11) is fitted on the slide rail (10), and the slider (11) is fixedly installed on the hinge shaft (9).

8. The electronic door lock of a vending machine according to claim 7, characterized in that: The slide rail (10) is a grooved slide rail (10), the slider (11) is slidably installed with the grooved slide rail (10), and the limiting component is a cover (1001) set at both ends of the grooved slide rail (10), the cover (1001) is tightened and fixed with the grooved slide rail (10) by means of bolts.

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