New energy automobile charging locking device

Abstract

The utility model discloses a new energy automobile charging locking device and relates to the field of electronic locks. The new energy automobile charging locking device comprises a shell, a motor, a worm, a transmission assembly and a locking pin, the motor, the worm, the transmission assembly and the locking pin are arranged in the shell, an output shaft of the motor is connected with the worm, the worm is in transmission connection with the locking pin through the transmission assembly, and when the worm rotates forwards and backwards, the locking pin is driven by the transmission assembly to stretch out or retract back to the shell. The signal feedback assembly comprises a PCB arranged in the shell, a first terminal and a second terminal, one end of the first terminal and one end of the second terminal are connected with the PCB, the other end of the first terminal and the other end of the second terminal extend out of the shell, and a microswitch is arranged on the PCB. And the locking pin pushes the swing arm of the microswitch when extending out of or retracting into the shell, so that the first terminal and the second terminal are connected to form a loop or separated. According to the new energy automobile charging locking device, it can be guaranteed that feedback signals are stably and reliably output during unlocking and locking for a long time.

Description

Technical Field

[0001] The present application relates to the field of electronic locks, and more particularly, to a charging locking device for new energy vehicles. Background Art

[0002] During the charging process of new energy vehicles, it is necessary to lock the charging gun device to ensure the safety and charging efficiency of the charging process.

[0003] The patent with the authorization announcement number CN217495850U discloses a charging locking device, which uses a switch branch with a resistor to feedback the locking signal and unlocking signal. This signal feedback device has certain limitations and cannot stably feedback the signals of the locking and unlocking positions. It is difficult to stably feedback the locking and unlocking signals after long-term use or being impacted and vibrated. Summary of the Utility Model

[0004] The purpose of the present application is to provide a charging locking device for new energy vehicles, which can ensure stable and reliable output of feedback signals during unlocking and locking for a long time.

[0005] The present application is implemented as follows:

[0006] The present application provides a charging locking device for new energy vehicles, which includes a housing and a motor, a worm, a transmission component and a locking pin arranged in the housing. The output shaft of the motor is connected to the worm, and the worm is in transmission connection with the locking pin through the transmission component. When the worm rotates forward and backward, the locking pin is driven by the transmission component to extend or retract into the housing. The device further includes a signal feedback component, which includes a PCB board arranged in the housing, and a first terminal and a second terminal with one end connected to the PCB board. The other ends of the first terminal and the second terminal extend out of the housing, and a micro switch is arranged on the PCB board. When the locking pin extends or retracts into the housing, it pushes the swing arm of the micro switch, so that the first terminal and the second terminal are connected to form a circuit or separated.

[0007] In some alternative embodiments, the housing is connected with a four-core interface that cooperates with a four-core plug, and the first terminal and the second terminal are respectively connected to the four-core interface.

[0008] In some alternative embodiments, the motor is connected to the four-core interface through a third terminal and a fourth terminal.

[0009] In some alternative embodiments, the transmission component includes a lead screw connected to the locking pin and a lead screw nut sleeved on the lead screw through a thread, and the lead screw nut meshes with the worm.

[0010] In some alternative embodiments, the housing is connected with an emergency unlocking component for driving the locking pin to retract into the housing, and the emergency unlocking component is connected to the lead screw nut.

[0011] In some alternative embodiments, the emergency unlocking assembly includes an unlocking knob rotatably connected to the housing, a clutch sleeve with one end connected to the unlocking knob, a bevel gear, a first-stage double gear meshing with the bevel gear, and a second-stage double gear meshing with the first-stage double gear. The second-stage double gear meshes with a lead screw nut. An arc-shaped groove is provided on the bevel gear, and a convex platform slidably disposed in the arc-shaped groove is connected to the clutch sleeve. When the unlocking knob rotates, it drives the clutch sleeve to rotate, causing the convex platform to push the bevel gear to rotate, driving the first-stage double gear and the second-stage double gear to rotate, so as to drive the lead screw and the locking pin to retract into the housing through the lead screw nut. When the worm rotates forward and backward to drive the locking pin to extend or retract into the housing, the convex platform idles along the arc-shaped groove.

[0012] In some alternative embodiments, the emergency unlocking assembly includes a pull rope connected to the unlocking knob.

[0013] In some alternative embodiments, a stop block is connected to the lead screw. When the locking pin extends or retracts from the housing, the lead screw drives the stop block to push the swing arm of the micro switch, causing the first terminal and the second terminal to be connected to form a circuit or separated.

[0014] In some alternative embodiments, a fixing plate is connected inside the housing. The fixing plate protrudes to form two supporting seats, and each of the two supporting seats is provided with a fixing card slot for clamping both ends of the motor.

[0015] In some alternative embodiments, the fixing plate is provided with fixing holes corresponding one by one to the first terminal and the second terminal, and the first terminal and the second terminal are respectively provided with fixing portions passing through the corresponding fixing holes.

[0016] The beneficial effects of the present application are as follows: The new energy vehicle charging locking device provided by the present application includes a housing and a motor, a worm, a transmission assembly and a locking pin disposed inside the housing. The output shaft of the motor is connected to the worm, and the worm is in transmission connection with the locking pin through the transmission assembly. When the worm rotates forward and backward, it drives the locking pin to extend or retract into the housing through the transmission assembly. The device further includes a signal feedback assembly, which includes a PCB board disposed inside the housing, and a first terminal and a second terminal with one end connected to the PCB board. The other ends of the first terminal and the second terminal extend out of the housing, and a micro switch is provided on the PCB board. When the locking pin extends or retracts from the housing, it pushes the swing arm of the micro switch, causing the first terminal and the second terminal to be connected to form a circuit or separated. The new energy vehicle charging locking device provided by the present application can ensure that feedback signals are output stably and reliably for a long time during unlocking and locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of the structure of the first perspective of the new energy vehicle charging locking device provided by the embodiment of the present application;

[0019] Figure 2 Schematic diagram of the structure of the second perspective of the new energy vehicle charging locking device provided by the embodiment of the present application;

[0020] Figure 3 Schematic diagram of the structure of the first perspective of the new energy vehicle charging locking device with part of the housing omitted provided by the embodiment of the present application;

[0021] Figure 4 Schematic diagram of the structure of the second perspective of the new energy vehicle charging locking device with part of the housing omitted provided by the embodiment of the present application;

[0022] Figure 5 Schematic diagram of the connection structure of the motor, worm, locking pin, transmission component and emergency unlocking component in the new energy vehicle charging locking device provided by the embodiment of the present application;

[0023] Figure 6 Schematic diagram of the structure of the motor, worm, locking pin, transmission component and PCB board in the new energy vehicle charging locking device provided by the embodiment of the present application;

[0024] Figure 7 Schematic diagram of the structure of the first perspective of the PCB board in the new energy vehicle charging locking device provided by the embodiment of the present application;

[0025] Figure 8 Schematic diagram of the structure of the second perspective of the PCB board in the new energy vehicle charging locking device provided by the embodiment of the present application;

[0026] Figure 9 Schematic diagram of the structure of the clutch sleeve and bevel gear in the new energy vehicle charging locking device provided by the embodiment of the present application;

[0027] Figure 10 Schematic diagram of the structure of the new energy vehicle charging locking device provided by another embodiment of the present application.

[0028] In the figure: 100, housing; 110, motor; 120, worm; 130, locking pin; 140, four-core interface; 150, stop block; 160, fixing plate; 170, support base; 180, fixing card slot; 190, fixing hole; 200, transmission assembly; 210, lead screw; 220, lead screw nut; 230, nut gear; 300, signal feedback assembly; 310, PCB board; 320, first terminal; 330, second terminal; 340, micro switch; 350, third terminal; 360, fourth terminal; 370, fixing part; 380, connecting contact; 400, unlocking knob; 410, clutch sleeve; 420, bevel gear; 430, first-stage double gear; 440, second-stage double gear; 450, arc groove; 460, boss; 470, pull rope. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0031] It should be noted that like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0033] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "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 mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0035] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0036] The features and performance of the new energy vehicle charging locking device of the present application will be further described in detail below in conjunction with embodiments.

[0037] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9As shown in the figure, an embodiment of the present application provides a charging locking device for a new energy vehicle, which includes a housing 100, a motor 110, a worm 120, a locking pin 130, and a transmission assembly 200 disposed in the housing 100. The output shaft of the motor 110 is connected to the worm 120, and the worm 120 is drivingly connected to the locking pin 130 through the transmission assembly 200. When the worm 120 rotates forward and backward, the locking pin 130 is driven by the transmission assembly 200 to extend or retract into the housing 100. The transmission assembly 200 includes a lead screw 210 connected to the locking pin 130 and a lead screw nut 220 rotatably disposed in the housing 100. The lead screw nut 220 is sleeved on the lead screw 210 through a thread, and an outer wall of the lead screw nut 220 is fixedly sleeved with a nut gear 230 meshing with the worm 120.

[0038] The housing 100 is further connected with a signal feedback assembly 300 for feeding back signals when the locking pin 130 extends or retracts from the housing 100 and an emergency unlocking assembly for driving the locking pin 130 to retract into the housing 100. The signal feedback assembly 300 includes a PCB board 310 disposed in the housing 100, a first terminal 320 and a second terminal 330 with one end connected to the PCB board 310. The PCB board 310 is provided with two connection contacts 380 for respectively connecting the first terminal 320 and the second terminal 330. The housing 100 is connected with a four-core interface 140 adapted to a four-core plug. The other ends of the first terminal 320 and the second terminal 330 are respectively connected to the four-core interface 140. A microswitch 340 is disposed on the PCB board 310, and the lead screw 210 is connected with a stopper 150. When the locking pin 130 extends or retracts from the housing 100, the lead screw 210 drives the stopper 150 to push the swing arm of the microswitch 340, so that the first terminal 320 and the second terminal 330 are connected to form a circuit or separated. The motor 110 is connected to the four-core interface 140 through a third terminal 350 and a fourth terminal 360. A fixing plate 160 is connected in the housing 100. The fixing plate 160 protrudes to form two support seats 170. The two support seats 170 are respectively provided with fixing card slots 180 for clamping both ends of the motor 110. The fixing plate 160 is provided with fixing holes 190 corresponding to the first terminal 320 and the second terminal 330 one by one. The first terminal 320 and the second terminal 330 are respectively provided with fixing portions 370 passing through the corresponding fixing holes 190.

[0039] The emergency unlocking assembly includes an unlocking knob 400 rotatably connected to the housing 100, a clutch sleeve 410 with one end connected to the unlocking knob 400, a bevel gear 420, a first-stage double gear 430 meshing with the bevel gear 420, and a second-stage double gear 440 meshing with the first-stage double gear 430. The second-stage double gear 440 meshes with the lead screw nut 220. An arc-shaped groove 450 is provided on the bevel gear 420, and the clutch sleeve 410 is connected with a boss 460 slidably arranged in the arc-shaped groove 450. When the unlocking knob 400 rotates, it drives the clutch sleeve 410 to rotate, so that the boss 460 pushes the bevel gear 420 to rotate, driving the first-stage double gear 430 and the second-stage double gear 440 to rotate, and driving the lead screw 210 and the locking pin 130 to retract into the housing 100 through the lead screw nut 220. When the worm 120 rotates forward and backward to drive the locking pin 130 to extend or retract into the housing 100, the boss 460 idles along the arc-shaped groove 450. In this embodiment, both the first-stage double gear 430 and the second-stage double gear 440 are fixed with two transmission gears on the transmission shaft.

[0040] The working principle of the new energy vehicle charging locking device provided by the embodiment of the present application is as follows: An external four-core plug is inserted into and connected to the four-core interface 140 connected to the housing 100, and an external power supply is connected to the motor 110 through the third terminal 350 and the fourth terminal 360 to form a loop for power supply. At this time, the motor 110 can be controlled to drive the output shaft to rotate forward and backward, and the connected worm 120 rotates to drive the engaged nut gear 230 and the lead screw nut 220 to rotate forward and backward. When the lead screw nut 220 rotates forward and backward, it drives the lead screw 210 in threaded cooperation to move axially back and forth, so that the locking pin 130 connected to the lead screw 210 moves axially to extend or retract into the housing 100 to achieve the locking and unlocking functions.

[0041] Wherein, when the lead screw 210 moves axially back and forth to drive the connected locking pin 130 to move axially to extend or retract into the housing 100, the block 150 connected to the lead screw 210 moves to push the swing arm of the microswitch 340 to connect the first terminal 320 and the second terminal 330 to form a loop to output a locking signal, or stop pressing the swing arm of the microswitch 340 to separate the first terminal 320 and the second terminal 330 to disconnect the loop and output an unlocking signal.

[0042] Inside the housing 100, a fixing plate 160 is connected. The fixing plate 160 protrudes to form two supporting seats 170. Each of the two supporting seats 170 is provided with a fixing card slot 180 for clamping both ends of the motor 110. At both ends of the top of the fixing plate 160, two supporting seats 170 are formed by protruding. Each of the two supporting seats 170 is provided with a fixing card slot 180 for clamping both ends of the motor 110. The stability of the motor 110 installed inside the housing 100 can be improved by clamping both ends of the motor 110 with the fixing card slots 180. The fixing plate 160 is provided with fixing holes 190 corresponding one by one to the first terminal 320 and the second terminal 330. The first terminal 320 and the second terminal 330 are respectively provided with fixing parts 370 passing through the corresponding fixing holes 190. The first terminal 320 and the second terminal 330 are respectively provided with fixing parts 370 passing through the two fixing holes 190. The position of the first terminal 320 and the second terminal 330 can be effectively fixed by the limiting cooperation between the fixing holes 190 on the fixing plate 160 and the fixing parts 370 connected to the first terminal 320 and the second terminal 330, so as to improve the stability of signal feedback;

[0043] When the locking pin 130 extends out of the housing 100 and is in the locked state, the operator can use the emergency unlocking component to release the locking state of the locking pin 130. Specifically, the operator rotates the unlocking knob 400. When the unlocking knob 400 rotates, it drives the clutch sleeve 410 to rotate, so that the boss 460 connected to the clutch sleeve 410 moves along the arc-shaped groove 450 to the end point, then presses against the inner wall of the arc-shaped groove 450 and drives the bevel gear 420 to rotate. When the bevel gear 420 rotates, it drives the first-stage double gear 430 and the second-stage double gear 440 meshed with it to rotate. Furthermore, it drives the lead screw nut 220 meshed with the second-stage double gear 440 to rotate. Thus, the lead screw nut 220 drives the locking pin 130 to move axially along the lead screw 210 in threaded cooperation to retract into the housing 100 to achieve the unlocking function. At the same time, when the output shaft of the motor 110 drives the worm 120 to rotate forward and backward through the connection, driving the meshed lead screw nut 220 to rotate forward and backward, when the lead screw nut 220 drives the meshed second-stage double gear 440 and the first-stage double gear 430 to rotate reciprocally, the arc-shaped groove 450 of the bevel gear 420 rotates to keep the boss 460 rotating freely along the arc-shaped groove 450 without pressing against the inner wall of the arc-shaped groove 450.

[0044] In other alternative embodiments, such as Figure 10 shown, the emergency unlocking component includes a pull rope 470 connected to the unlocking knob 400. The operator can drive the unlocking knob 400 to rotate by pulling the pull rope 470 to release the locking state of the locking pin 130.

[0045] The embodiments described above are some, but not all, of the embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

Claims

1. A charging locking device for a new energy vehicle, comprising a housing and a motor, a worm, a transmission assembly and a locking pin arranged in the housing, wherein the output shaft of the motor is connected to the worm, the worm is connected to the locking pin through the transmission assembly, and the locking pin is driven to extend or retract back to the housing through the transmission assembly when the worm rotates forward or reversely, characterized in that: It also includes a signal feedback component, which includes a PCB board arranged in the shell and a first terminal and a second terminal connected to the PCB board at one end, the other ends of the first terminal and the second terminal extend out of the shell, and a micro switch is arranged on the PCB board; when the locking pin extends out of or retracts into the shell, it pushes the swing arm of the micro switch, so that the first terminal and the second terminal are connected to form a loop or separated.

2. The new energy vehicle charging locking device according to claim 1, characterized in that: The housing is connected with a four-core interface matched with a four-core plug, and the first terminal and the second terminal are respectively connected with the four-core interface.

3. The new energy vehicle charging locking device according to claim 2, characterized in that: The motor is connected to the four-core interface via a third terminal and a fourth terminal.

4. The new energy vehicle charging locking device according to claim 1, characterized in that: The transmission assembly includes a screw connected to the locking pin and a screw nut threadedly sleeved on the screw, and the screw nut is meshed with the worm.

5. The new energy vehicle charging locking device according to claim 4, characterized in that: The housing is connected with an emergency unlocking assembly for driving the locking pin to retract into the housing, and the emergency unlocking assembly is connected with the screw nut.

6. The new energy vehicle charging locking device according to claim 5, characterized in that: The emergency unlocking assembly includes an unlocking knob rotatably connected to the shell, a clutch sleeve with one end connected to the unlocking knob, a bevel gear, a first-stage double gear meshing with the bevel gear, and a second-stage double gear meshing with the first-stage double gear, the second-stage double gear meshing with the lead screw nut, an arc groove is provided on the bevel gear, and the clutch sleeve is connected with a boss slidably arranged in the arc groove; when the unlocking knob is rotated, the clutch sleeve is driven to rotate, so that the boss pushes the bevel gear to rotate and drive the first-stage double gear and the second-stage double gear to rotate so as to drive the lead screw and the locking pin to retract into the shell through the lead screw nut; when the worm is reversed to drive the locking pin to extend or retract back into the shell, the boss is caused to idle along the arc groove.

7. The new energy vehicle charging locking device according to claim 6, characterized in that: The emergency unlocking assembly includes a pull rope connected to the unlocking knob.

8. The new energy vehicle charging locking device according to claim 4, characterized in that: The screw rod is connected with a stopper; when the locking pin extends out of or retracts into the housing, the screw rod drives the stopper to push the swing arm of the micro switch, so that the first terminal and the second terminal are connected to form a loop or separated.

9. The new energy vehicle charging locking device according to claim 1, characterized in that: A fixing plate is connected inside the shell, and the fixing plate is raised to form two supporting seats, and the two supporting seats are respectively provided with fixing slots for clamping two ends of the motor.

10. The new energy vehicle charging locking device according to claim 9, characterized in that: The fixing plate is provided with fixing holes corresponding to the first terminals and the second terminals one by one, and the first terminals and the second terminals are respectively provided with fixing parts passing through the corresponding fixing holes.

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