CN213753271U - Electronic lock of direct current charging gun - Google Patents

Abstract

The utility model discloses an electronic lock of direct current rifle that charges, including last casing and lower casing, go up casing fixed mounting on the casing down, go up the inside formation installation cavity of casing and casing down, be equipped with PCB board subassembly and set up driving motor and the rack in PCB board subassembly top in the installation cavity, driving motor and PCB board subassembly signal connection, the rack meshes with driving motor's transmission shaft, the rack is along the direction motion of perpendicular to installation cavity inner wall under driving motor's drive, contact or the separation with PCB board subassembly during rack motion, the signal feedback of locking or unblock is carried out through the contact or the separation with the rack to PCB board subassembly. The utility model discloses to charge the inside electronic lock structure collection of rifle together, the stable function, it is small, and can carry out emergent unblock to charging connecting device under the system fault or the outage condition of electronic lock, the whole sealing performance of electronic lock is excellent, satisfies the use under the different environment, has good result of use and spreading value.

Description

Electronic lock of direct current charging gun

Technical Field

The utility model relates to an electronic lock especially relates to an electronic lock that is used for electric automobile to charge with direct current rifle that charges.

Background

Energy electric automobile uses the direct current charging in-process, need carry out the electron closure to charging connecting device, and it has safe and reliable, opens convenient characteristics, nevertheless has also to have under the outage condition or electronic system trouble, leads to the problem that can't unblank, and current electronic lock structure itself is complicated, and the part is more leads to the assembly precision to require highly, and sealing performance is not high leads to the fact that there is the damage risk when individual part uses under humid environment.

Disclosure of Invention

The purpose of the invention is as follows: an object of the utility model is to provide a direct current rifle electronic lock that charges that carries out emergent unblock to charging connection device under system's trouble or outage condition.

The technical scheme is as follows: the invention discloses an electronic lock of a direct-current charging gun, which comprises an upper shell and a lower shell, wherein the upper shell is fixedly arranged on the lower shell, an installation cavity is formed inside the upper shell and the lower shell, a PCB (printed circuit board) assembly, a driving motor and a rack are arranged above the PCB assembly, the driving motor is in signal connection with the PCB assembly, the rack is meshed with a transmission shaft of the driving motor, the rack moves along the direction vertical to the inner wall of the installation cavity under the driving of the driving motor, the rack contacts or separates with the PCB assembly when moving, and the PCB assembly carries out signal feedback of locking or unlocking through the contact or separation with the rack.

Furthermore, the PCB assembly comprises a PCB which is arranged in the lower shell, and a first microswitch, a motor pin and a connector are arranged on the PCB; the driving motor is installed on the PCB through a motor pin, a signal input end of the driving motor is electrically connected with the PCB, the PCB controls the starting and stopping of the driving motor, preferably, the PCB can be electrified by an external charging pile, a signal of the charging pile is transmitted to the driving motor on the PCB through a connector, and then the forward rotation and the reverse rotation of the driving motor are controlled; the first microswitch is positioned on one side of the rack, the side wall of the rack is contacted with or separated from a signal receiving end of the first microswitch, and the first microswitch is in a normally open state or a normally closed state and is used for signal feedback when the charging gun is locked or unlocked; the connector is connected with the signal of the charging gun, the signal received by the first microswitch is fed back through the PCB, and the connector is preferably an 8-core connector and is connected with a matching piece in the charging gun in a loop for transmitting the signal or power.

Furthermore, a round hole for the rack to penetrate out is formed in the side wall of the lower shell; when the rack penetrates out of the round hole, the side wall of the rack is in contact with the signal receiving end of the first microswitch, and when the rack is positioned in the lower shell, the side wall of the rack is separated from the signal receiving end of the first microswitch. The two ends of the rack are limited by the inner wall of the lower shell, so as to ensure the consistent stroke of the rack each time, a sealing ring for sealing is arranged at the joint of the rack and the round hole,

furthermore, the joint of the upper shell and the PCB assembly is coated with epoxy glue for sealing, so that sealing is guaranteed.

Further, the upper shell and the lower shell are fixed through ultrasonic welding.

The utility model discloses a theory of operation: when the PCB assembly supplies forward voltage to the driving motor, the motor rotates forwards, the rack is driven to move forwards through meshing of the rack, and meanwhile, the rack and the lower shell are limited, so that the consistent stroke of the rack each time is ensured; the rack moves forwards to trigger a first microswitch on the PCB assembly, and a feedback signal transmits signal change to the outside through a loop formed by the connector assembly to indicate that the locking is successful; when the PCB board subassembly supplies reverse voltage for driving motor, the rack has worn out the casing this moment, and first micro-gap switch has triggered, and motor antiport drives the rack backward motion through rack toothing, and there is spacing rack and electronic lock lower casing's lateral wall simultaneously, and the rack resumes to initial condition, and first micro-gap switch feedback signal on the PCB board subassembly appears changing, and the signal change is transmitted to the external world to the return circuit that the signal of feedback passes through the connector and constitutes, shows that the unblock is successful.

Has the advantages that: compared with the prior art, the utility model, have following advantage: the utility model discloses to charge the inside electronic lock structure set of rifle and be in the same place, form the subassembly form, the equipment of being convenient for, the stable function, it is small, and can carry out emergent unblock to charging connecting device under the system fault or the outage circumstances of electronic lock, the whole sealing performance of electronic lock is excellent, reaches IP67 protection level, satisfies the use under the different environment, has good result of use and spreading value.

Drawings

FIG. 1 is an exploded view of the structure of the present invention;

FIG. 2 is a schematic view of the structure of the utility model after installation;

fig. 3 is a schematic structural view of the PCB assembly of the present invention;

fig. 4 is a schematic structural view of the present invention in which the rack is separated from the first micro switch;

fig. 5 is a schematic structural view of the contact between the rack and the first microswitch of the present invention;

fig. 6 is a schematic view of the present invention installed in an electron gun.

Detailed Description

The invention is further illustrated by the following figures and examples.

Referring to fig. 1, the electronic lock of the dc charging gun has a rectangular structure as a whole, and includes an upper housing 1 and a lower housing 2, a PCB assembly 3 is installed in the lower housing 2, a driving motor 4 and a rack 5 are respectively arranged on the PCB assembly 3, the PCB assembly 3 is in signal connection with the driving motor 4, a transmission shaft of the driving motor 4 is meshed with the rack 5, the rack 5 is vertically arranged with the inner side wall of the lower shell 2, when the driving motor 4 runs, the rack 5 is driven to move along the direction vertical to the inner wall of the lower shell 2, a round hole 21 is formed in the side wall of the lower shell 2, the diameter of the round hole 21 is slightly larger than the outer diameter of the rack 5, the rack 5 can penetrate through the round hole 21 under the driving of the driving motor 4, the upper shell 1 is fixed on the lower shell 2 through ultrasonic welding, referring to fig. 2, and the upper shell 1 and the lower shell 2 are fixed to form an electronic lock structure.

Referring to fig. 3, the PCB assembly 3 includes a PCB 31, a first microswitch 33, a motor pin 34 and a connector 35, a signal input end of the driving motor 4 is electrically connected to the PCB 31, the PCB 31 receives a signal from a field charging post or other remote control device to control the start and stop of the driving motor 4, so as to realize the signal transmission of locking and unlocking, a first microswitch 33 is arranged on one side of the rack, and when the driving motor 4 drives the rack 5 to move, the side wall of the rack 5 is contacted with or separated from the signal receiving end of the first microswitch 33, the connector 35 is directly connected with the corresponding counterpart of the charging gun, when the signal received by the first microswitch 33 changes, the connector 35 feeds back a locking or unlocking signal, the locking signal is sent when the rack 5 is in contact with the first microswitch 33, and the unlocking signal is sent when the rack 5 is separated from the first microswitch 33. In addition, a second microswitch 32 for identifying the resistance value of the charging gun during charging can be integrated on the PCB 31, and the second microswitch 32 forms a loop with the charging gun through a resistor for identifying signals between the charging gun and the charging socket/charging pile.

Referring to fig. 4, at this time, the rack 5 is completely located in the lower housing 2, the side wall of the rack 5 is separated from the first micro switch 33, one end of the rack 5 abuts against one inner wall of the lower housing 2, and is limited by the lower housing 2, referring to fig. 5, the rack 5 is driven by the driving motor 4 to move, the other end of the rack 5 penetrates out of the lower housing 2, the side wall of the rack 5 is in contact with the first micro switch 33 at this time, when the side wall of the rack 5 moves to be in contact with the other inner wall of the lower housing 2, the limitation on the rack 5 is completed, and since the distance between the inner walls of the lower housing 2 is fixed, the stroke of the rack can be guaranteed to be consistent every time, so that the stability of the electronic lock switch is improved.

In order to improve the holistic leakproofness of electronic lock, still be provided with sealing washer 6 between rack 5 and round hole 21, paint the epoxy simultaneously around last casing 1 welding back and second micro-gap switch 32 combination department, concrete installation is: firstly, the sealing ring 6 is arranged on the lower shell 2 of the electronic lock, then the PCB board assembly 3, the rack 5 and the driving motor 4 are sequentially assembled on the lower shell 2, then the upper shell 1 of the electronic lock is assembled on the lower shell 2 of the electronic lock, the upper shell and the lower shell are welded and fixed by ultrasonic welding, and finally epoxy glue is smeared around the joint of the upper shell 1 of the electronic lock and the PCB board assembly 3 to ensure sealing. Referring to fig. 6, the installed electronic lock 100 is connected and combined with the electronic gun 200 through screws, an electronic lock sealing gasket 300 is arranged between the lower shell of the electronic lock and the shell of the charging gun, gaps between plastic parts are completely filled, the overall sealing effect is achieved, and the IP67 protection after the electronic lock and the charging gun are assembled is achieved through the arrangement.

Claims (7)

1. The utility model provides an electronic lock of direct current rifle that charges, includes casing (1) and casing (2) down, go up casing (1) fixed mounting under on casing (2), go up the inside formation installation cavity of casing (1) and casing (2) down, its characterized in that: be equipped with PCB board subassembly (3) in the installation cavity and set up driving motor (4) and rack (5) in PCB board subassembly (3) top, driving motor (4) and PCB board subassembly (3) signal connection, rack (5) and driving motor's (4) transmission shaft meshing, rack (5) are along the direction motion of perpendicular to installation cavity inner wall under driving motor's (4) drive, contact or separation with PCB board subassembly (3) during rack (5) motion, PCB board subassembly (3) are through the signal feedback who locks or unblock with the contact or the separation of rack (5).

2. The electronic lock of the dc charging gun according to claim 1, wherein: the PCB assembly (3) comprises a PCB (31), the PCB (31) is installed in the lower shell (2), and a first microswitch (33), a motor pin (34) and a connector assembly (35) are arranged on the PCB (31); the driving motor (4) is installed on the PCB (31) through a motor pin (34), the signal input end of the driving motor (4) is electrically connected with the PCB (31), and the PCB (31) controls the starting and stopping of the driving motor (4); the first microswitch (33) is positioned at one side of the rack (5), and the side wall of the rack (5) is contacted with or separated from a signal receiving end of the first microswitch (33); the connector (35) is in signal connection with the charging gun, and signals received by the first microswitch (33) are fed back through the PCB (31).

3. The electronic lock of the dc charging gun according to claim 2, wherein: a round hole (21) for the rack (5) to penetrate out is formed in the side wall of the lower shell (2); when the rack (5) penetrates out of the round hole (21), the side wall of the rack (5) is in contact with the signal receiving end of the first microswitch (33), and when the rack (5) is located in the lower shell (2), the side wall of the rack (5) is separated from the signal receiving end of the first microswitch (33).

4. The electronic lock of the dc charging gun according to claim 2, wherein: the rack (5) is limited by the inner wall of the lower shell.

5. The electronic lock of the dc charging gun according to claim 3, wherein: and a sealing ring (6) for sealing is arranged at the joint of the rack (5) and the round hole (21).

6. The electronic lock of the dc charging gun according to claim 2, wherein: epoxy glue for sealing is coated at the joint of the upper shell (1) and the PCB plate component (3).

7. The electronic lock of the dc charging gun according to claim 1, wherein: the upper shell (1) and the lower shell (2) are fixed through ultrasonic welding.

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