Automatic unlocking type electronic lock

Abstract

The automatic unlocking type electronic lock comprises a bottom shell and a face shell, the face shell is fixed to the upper end of the bottom shell, a connector is installed at the lower end of the bottom shell, an electromagnet assembly is fixedly installed on the right side in the bottom shell, and a spring assembly is installed on the right portion of the electromagnet assembly. The connector is connected with a locking mechanism to transmit a control signal to the driving device, the unlocking button is always kept in an upward state under the driving of the second reset spring, when the electromagnet assembly is electrified to work, the iron core and the push block are driven to synchronously move leftwards, the signal switch is triggered, the push rod is made to lock the unlocking button at the same time, and the unlocking button is unlocked. Meanwhile, the unlocking button upwards extrudes the mechanical switch, so that the unlocking button cannot be pressed downwards, meanwhile, a long-time closing signal of the mechanical switch is kept, as long as the electromagnet assembly works to turn off a power supply, the spring assembly drives the iron core and the push block to automatically reset rightwards, so that the push rod automatically resets, and the unlocking button can be pressed downwards at the moment for unlocking; and the electronic lock is safer and more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic locks, in particular to an automatic unlocking electronic lock. Background Art

[0002] There are more and more new energy vehicles. In order to ensure the safety of people, vehicles and charging piles during charging, the charging gun needs to have certain protection functions. When the charging gun is plugged in, an electronic lock is needed to prevent the charging gun from being accidentally disconnected.

[0003] Currently, when locking the charging gun, most electronic locks require pressing a switch to start the driving device of the locking mechanism to move the lock component to lock it. When unlocking, most electronic locks require manual operation to close the switch to unlock it, which is more troublesome. Utility Model Content

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide an automatic unlocking electronic lock to solve the problems raised in the above background technology.

[0005] An automatic unlocking electronic lock includes a bottom shell and a face shell, the face shell is fixed to the upper end of the bottom shell, a joint is installed at the lower end of the bottom shell, an electromagnet assembly is fixedly installed on the right side of the bottom shell, a spring assembly is installed on the right part of the electromagnet assembly, a push block is slidably connected to the inside of the bottom shell, the right part of the push block is connected to the left part of the electromagnet assembly, an unlocking button is elastically connected to the left side of the bottom shell, the upper part of the push block contacts the bottom of the unlocking button, a mechanical switch is fixed at the rear end of the bottom shell, the rear end of the unlocking button contacts the lower end of the mechanical switch, a signal switch is fixed at the rear end of the bottom shell, the signal switch is located on the right side of the mechanical switch, and the rear end of the push block contacts the lower end of the signal switch.

[0006] Furthermore, the electromagnet assembly includes a coil and an iron core, the coil is fixedly mounted on the bottom shell, the iron core is slidably connected to the inner side of the coil, and the left part of the iron core is fixed to the right part of the push block.

[0007] Furthermore, the spring assembly includes a T-shaped rod and a return spring 1, the T-shaped rod is fixed to the right end of the iron core, the return spring 1 is arranged on the outside of the T-shaped rod, and the return spring 1 is connected between the right part of the coil and the right part of the T-shaped rod.

[0008] Furthermore, a push rod is fixed to the left end of the push block, a guide rail is fixed to the bottom end of the bottom shell and just below the unlocking button, and the left part of the push rod extends into the guide rail and is slidably connected to the guide rail.

[0009] Furthermore, the top section and right section of the push block are both "convex" shaped structures, and the push block is provided with convex edges below the front and rear ends and the left end. The convex edge at the left end contacts the bottom of the unlock button, and the convex edge at the rear end contacts the metal sheet at the bottom of the signal switch.

[0010] Furthermore, a second return spring is connected between the lower end of the unlocking button and the bottom end of the bottom shell.

[0011] Furthermore, a pressure plate is fixed to the lower portion of the rear end of the unlocking button, and the pressure plate contacts the button at the lower portion of the mechanical switch.

[0012] The beneficial effects of the present invention are as follows: by connecting the connector to the locking mechanism, a control signal is transmitted to the driving device, and the unlocking button is always kept in an upward shape under the drive of the reset spring 2. When the electromagnet assembly is energized, the driving iron core and the push block are synchronously moved to the left, triggering the signal switch while allowing the push rod to simultaneously (lock) the unlocking button. At the same time, the unlocking button presses the mechanical switch upward, making it impossible to press the unlocking button down, while keeping the mechanical switch long-closed signal. As long as the electromagnet assembly is in the power-off state, the iron core and the push block are driven to "automatically reset" to the right by the "spring assembly", thereby realizing automatic resetting of the push rod. At this time, the unlocking button can be pressed down to unlock, making the electronic lock safer and more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the present invention after the front cover is removed;

[0015] Figure 3 This is a schematic diagram of the present invention after the electromagnet assembly is removed;

[0016] Figure 4 This is a schematic diagram of the utility model after the bottom shell and the front shell are removed.

[0017] In the figure: 1- bottom shell, 2- top shell, 3- connector, 4- unlock button, 5- coil, 6- iron core, 7- T-bar, 8- return spring 1, 9- push block, 10- push rod, 11- guide rail, 12- signal switch, 13- mechanical switch, 14- return spring 2, 15- convex edge, 16- pressure plate. DETAILED DESCRIPTION

[0018] See also Figure 1-Figure 4, an automatic unlocking electronic lock includes a bottom shell 1 and a face shell 2, the face shell 2 is fixed to the upper end of the bottom shell 1, a connector 3 is installed at the lower end of the bottom shell 1, an electromagnet assembly is fixedly installed on the right side of the bottom shell 1, and the electromagnet assembly includes a coil 5 and an iron core 6, the coil 5 is fixedly installed with the bottom shell 1, and the iron core 6 is slidably connected to the inside of the coil 5. By connecting the connector 3 to the locking mechanism, a control signal is transmitted to the drive device, and the coil 5 is connected to an external power supply, so that when the coil 5 is energized, the iron core 6 can move to the left inside the coil 5;

[0019] A spring assembly is installed on the right side of the electromagnet assembly, and the spring assembly includes a T-shaped rod 7 and a return spring 8. The T-shaped rod 7 is fixed to the right end of the iron core 6, and the return spring 8 is arranged on the outside of the T-shaped rod 7. The return spring 8 is connected between the right side of the coil 5 and the right side of the T-shaped rod 7. When the iron core 6 moves to the left, it will drive the T-shaped rod 7 to move to the left, and the right side of the T-shaped rod 7 will squeeze the return spring 8. The return spring 8 is set to reset the iron core 6 to the right after the coil 5 is powered off;

[0020] A push block 9 is slidably connected to the inside of the bottom shell 1, and the right part of the push block 9 is connected to the left part of the electromagnet assembly. The left part of the iron core 6 is fixed to the right part of the push block 9. An unlocking button 4 is elastically connected to the left side of the inside of the bottom shell 1, and a return spring 2 14 is connected between the lower end of the unlocking button 4 and the bottom end of the bottom shell 1. A push rod 10 is fixed to the left end of the push block 9, and a guide rail 11 is fixed to the bottom end of the inside of the bottom shell 1 and directly below the unlocking button 4. The left part of the push rod 10 extends into the inside of the guide rail 11 and is slidably connected to the guide rail 11. When the iron core 6 moves to the left, it will drive the push block 9 and the push rod 10 to move left together. In this way, the push rod 10 slides along the guide rail 11, which can play a guiding role in the push block 9;

[0021] The upper part of the push block 9 contacts the bottom of the unlock button 4, and a mechanical switch 13 is fixed to the rear end of the bottom shell 1. The rear part of the unlock button 4 contacts the lower end of the mechanical switch 13. A pressure plate 16 is fixed to the lower rear end of the unlock button 4. The pressure plate 16 contacts the button at the lower part of the mechanical switch 13. A signal switch 12 is fixed to the rear end of the bottom shell 1. The signal switch 12 is located on the right side of the mechanical switch 13. The rear part of the push block 9 contacts the lower end of the signal switch 12. The top section and right section of the push block 9 are both "convex" shaped structures. Block 9 is provided with convex edges 15 at the lower part of both ends and the left end. The convex edge 15 at the left end contacts the bottom of the unlocking button 4, and the convex edge 15 at the rear end contacts the metal sheet at the bottom of the signal switch 12. The mechanical switch 13 is connected to the driving device through the PCB, which is used to control the driving device to drive the mechanical lock rod to retract, and the signal switch 12 is connected to the driving device and the mechanical switch 13 through the PCB, which is used to control the driving device to drive the mechanical lock rod to extend and the mechanical switch 13 to close the signal. When the unlocking button 4 moves down, the pressure plate 16 is driven to move down and no longer squeeze the machine. The button at the bottom of the mechanical switch 13 is pressed, and the signal switch 12 is not triggered. At this time, the mechanical switch 13 is in the on state. When the unlocking button 4 needs to be locked, the electromagnet assembly is energized to work, and the driving iron core 6 and the push block 9 move to the left synchronously. The convex edge 15 at the rear of the push block 9 triggers the signal switch 12. At this time, the driving device drives the mechanical lock rod to extend to lock the charging gun, and then the push block 9 moves one end to the left from the convex edge 15 on the left to push the unlocking button 4 upward. At the same time, the unlocking button 4 presses the mechanical switch 13 upward, so that the unlocking button 4 cannot be pressed down, while keeping the machine locked. The mechanical switch 13 is long closed, and as long as the electromagnet assembly is working in the power-off state, the reset spring 1 8 drives the iron core 6 and the push block 9 to reset to the right. In this way, when the signal switch 12 is turned off, the unlocking button 4 automatically moves down because the reset spring 2 14 is pulled down to achieve automatic unlocking. At this time, the mechanical switch 13 is not pressed, and the driving device drives the mechanical locking rod to retract to unlock the charging gun. In this way, when the unlocking button 4 triggers the signal switch 12, the mechanical locking rod of the charging gun extends, and the charging gun realizes the locking function, and then the unlocking button 4 is locked, which is more convenient to use.

Claims

1. An automatic unlocking electronic lock, comprising a bottom shell (1) and a front shell (2), wherein the front shell (2) is fixed to the upper end of the bottom shell (1), and a connector (3) is installed at the lower end of the bottom shell (1), characterized in that: An electromagnet assembly is fixedly installed on the right side of the bottom shell (1), and a spring assembly is installed on the right side of the electromagnet assembly. A push block (9) is slidably connected to the bottom shell (1), and the right side of the push block (9) is connected to the left side of the electromagnet assembly. An unlocking button (4) is elastically connected to the left side of the bottom shell (1), and the upper part of the push block (9) contacts the bottom of the unlocking button (4). A mechanical switch (13) is fixed to the rear end of the bottom shell (1), and the rear part of the unlocking button (4) contacts the lower end of the mechanical switch (13). A signal switch (12) is fixed to the rear end of the bottom shell (1), and the signal switch (12) is located on the right side of the mechanical switch (13). The rear part of the push block (9) contacts the lower end of the signal switch (12).

2. The automatic unlocking electronic lock according to claim 1, characterized in that: The electromagnet assembly comprises a coil (5) and an iron core (6); the coil (5) is fixedly mounted on the bottom shell (1); the iron core (6) is slidably connected to the inner side of the coil (5); and the left part of the iron core (6) is fixed to the right part of the push block (9).

3. The automatic unlocking electronic lock according to claim 2, characterized in that: The spring assembly comprises a T-shaped rod (7) and a return spring (8), wherein the T-shaped rod (7) is fixed to the right end of the iron core (6), the return spring (8) is arranged outside the T-shaped rod (7), and the return spring (8) is connected between the right part of the coil (5) and the right part of the T-shaped rod (7).

4. The automatic unlocking electronic lock according to claim 1, characterized in that: A push rod (10) is fixed to the left end of the push block (9), and a guide rail (11) is fixed to the bottom end of the bottom shell (1) and located directly below the unlocking button (4). The left part of the push rod (10) extends into the inside of the guide rail (11) and is slidably connected to the guide rail (11).

5. The automatic unlocking electronic lock according to claim 1, characterized in that: The top section and right section of the push block (9) are both convex-shaped structures. The push block (9) is provided with convex edges (15) below the front and rear ends and the left end. The convex edge (15) at the left end contacts the bottom of the unlocking button (4), and the convex edge (15) at the rear end contacts the metal sheet at the bottom of the signal switch (12).

6. The automatic unlocking electronic lock according to claim 1, characterized in that: A second return spring (14) is connected between the lower end of the unlocking button (4) and the inner bottom end of the bottom shell (1).

7. The automatic unlocking electronic lock according to claim 1, characterized in that: A pressing plate (16) is fixed to the lower portion of the rear end of the unlocking button (4), and the pressing plate (16) contacts the button at the lower portion of the mechanical switch (13).

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