Electronic lock with lock pin capable of stretching out and drawing back simultaneously in multiple directions

Abstract

The utility model discloses an electronic lock with a lock pin capable of stretching out and drawing back in multiple directions and relates to the field of electronic locks. The electronic lock comprises a shell, at least two lock pins, a motor assembly and a gear transmission assembly, wherein the lock pins can be telescopically connected to the shell in different directions, and the motor assembly and the gear transmission assembly are arranged in the shell. The motor assembly comprises a motor and a worm connected with an output shaft of the motor. When the worm rotates forwards and backwards, the gear transmission assembly drives the lock pins to synchronously stretch out or retract back to the shell. According to the electronic lock capable of stretching out and drawing back the lock pins simultaneously in the multiple directions, the multiple lock pins can be stably and efficiently driven to stretch out or draw back synchronously for locking and unlocking, and the locking and self-locking functions are achieved.

Description

Technical Field

[0001] The present application relates to the field of electronic locks, and more particularly, to an electronic lock capable of simultaneously extending and retracting lock pins in multiple directions. Background Art

[0002] In order to improve the safety and stability of a new energy vehicle charging gun during the charging process, an electronic lock is required to control the extension and retraction of the lock pin to lock the position of the charging gun during the charging process.

[0003] The utility model patent with the authorization announcement number CN217387766U discloses a new energy electronic lock. However, in terms of locking and unlocking the charging locking device, it can only extend a single lock pin in a single direction to act on the charging gun, and cannot simultaneously extend the lock pins from multiple directions to act on the charging gun, resulting in a lack of locking stability. Summary of the Utility Model

[0004] The purpose of the present application is to provide an electronic lock capable of simultaneously extending and retracting lock pins in multiple directions, which can stably and efficiently drive multiple lock pins to synchronously extend or retract for locking and unlocking, and has a locking self-locking function.

[0005] The present application is implemented as follows:

[0006] The present application provides an electronic lock capable of simultaneously extending and retracting lock pins in multiple directions, which includes a housing, at least two lock pins connected to the housing so as to be extendable and retractable in different directions, and a motor assembly and a gear transmission assembly provided in the housing. The motor assembly includes a motor and a worm connected to the output shaft of the motor; when the worm rotates forward and backward, it drives each lock pin to synchronously extend or retract back into the housing through the gear transmission assembly.

[0007] In some alternative embodiments, the gear transmission assembly includes a double gear meshing with the worm, sector gears corresponding to each lock pin one by one, and racks meshing with each sector gear one by one. Each sector gear meshes in sequence, the double gear meshes with one sector gear, and each rack is connected to the corresponding lock pin.

[0008] In some alternative embodiments, each rack is connected to the lock pin through a corresponding buffer seat.

[0009] In some alternative embodiments, the housing is connected with a four-core interface adapted to a four-core plug, and the four-core interface is connected with a first terminal and a second terminal respectively electrically connected to the motor.

[0010] In some alternative embodiments, a PCB board is provided in the housing, a micro switch is provided on the PCB board, the four-core interface is connected with a third terminal and a fourth terminal electrically connected to the PCB board, and when the lock pin extends or retracts back into the housing, it pushes the swing arm of the micro switch to electrically connect or disconnect the third terminal and the fourth terminal.

[0011] In some optional embodiments, the housing is also connected to an emergency unlocking device for driving each locking pin to synchronously retract back into the housing, and the emergency unlocking device is connected to the sector gear that meshes with the double gears.

[0012] In some optional embodiments, the emergency unlocking device includes a sleeve connected to the shell, an unlocking knob rotatably connected to the shell, a pull wire with one end passing through the sleeve and connected to the unlocking knob, and a clutch sleeve with one end connected to the unlocking knob. An arc groove is provided on the sector gear of the double gear meshing, and the other end of the clutch sleeve is connected to a boss slidably arranged in the arc groove; when the pull wire is stretched, it drives the clutch sleeve to move, so that the boss pushes the sector gear of the double gear meshing to rotate, driving each locking pin to synchronously retract back to the shell; when the worm gear rotates forward and reversely to drive each sector gear to rotate and drive each locking pin to synchronously extend or retract back to the shell, the boss idles along the arc groove.

[0013] In some optional embodiments, the clutch sleeve is provided with a return spring with two ends respectively connected to the housing, and the return spring is used to drive the rotating clutch sleeve and the unlocking knob to return to their original position.

[0014] In some optional embodiments, the housing is provided with two limit blocks, and the two limit blocks are used to limit the position of the rotating unlocking knob.

[0015] In some optional embodiments, the first terminal and the second terminal are respectively provided with an electrical connector electrically connected to the motor and a limit head for pressing and limiting the end of the motor.

[0016] In some optional embodiments, the axes of at least two locking pins are arranged vertically.

[0017] The beneficial effects of the present application are as follows: the electronic lock provided by the present application, which can extend and retract the lock pins simultaneously in multiple directions, comprises a housing, at least two lock pins that can be telescopically connected to the housing in different directions, and a motor assembly and a gear transmission assembly arranged in the housing, wherein the motor assembly comprises a motor and a worm connected to the motor output shaft; when the worm rotates forward and reverse, the gear transmission assembly drives each lock pin to extend or retract synchronously back to the housing. The electronic lock provided by the present application, which can extend and retract the lock pins simultaneously in multiple directions, can stably and efficiently drive multiple lock pins to extend or retract synchronously for locking and unlocking, and has a locking self-locking function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 Schematic structural diagram of an electronic lock provided by an embodiment of the present application, which can simultaneously expand and contract the locking pin in multiple directions;

[0020] Figure 2 Schematic structural diagram of an electronic lock provided by an embodiment of the present application, which can simultaneously expand and contract the locking pin in multiple directions, with part of the housing omitted;

[0021] Figure 3 Schematic structural diagram of an electronic lock provided by an embodiment of the present application, which can simultaneously expand and contract the locking pin in multiple directions, with the housing omitted;

[0022] Figure 4 Partial structural schematic diagram of an electronic lock provided by an embodiment of the present application, which can simultaneously expand and contract the locking pin in multiple directions, after omitting the housing and the motor assembly;

[0023] Figure 5 Partial connection structural schematic diagram of the unlocking knob, the clutch sleeve and the sector gear in an electronic lock provided by an embodiment of the present application, which can simultaneously expand and contract the locking pin in multiple directions;

[0024] Figure 6 Schematic structural diagram of the PCB board in an electronic lock provided by an embodiment of the present application, which can simultaneously expand and contract the locking pin in multiple directions.

[0025] In the figure: 100, housing; 110, locking pin; 120, motor assembly; 121, motor; 122, worm; 130, four-core interface; 140, first terminal; 141, electrical connector; 142, limiting head; 150, second terminal; 160, PCB board; 170, microswitch; 180, third terminal; 190, fourth terminal; 200, gear transmission assembly; 210, double gear; 220, sector gear; 230, rack; 240, buffer seat; 310, sleeve; 320, unlocking knob; 330, wire; 340, clutch sleeve; 350, arc groove; 360, boss; 370, return spring; 380, limiting block. Detailed implementation manners

[0026] 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. Obviously, 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.

[0027] Accordingly, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, 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.

[0028] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

[0029] 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 accompanying drawings, or the orientation or positional relationship in which the product of this application is customarily placed during 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 thus should not be construed as a limitation of 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.

[0030] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but may 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 may be slightly inclined.

[0031] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. 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 circumstances.

[0032] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and diagonally below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0033] The features and performance of the electronic lock with a retractable locking pin that can be retracted and extended simultaneously in multiple directions according to the present application will be further described in detail with reference to the embodiments below.

[0034] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown in the figure, the present application provides an electronic lock capable of simultaneously telescoping the locking pins in multiple directions, which includes a housing 100, two locking pins 110 that are telescopically connected to the housing 100 in different directions, a motor assembly 120 and a gear transmission assembly 200 disposed inside the housing 100. The axes of the two locking pins 110 are perpendicularly arranged; the motor assembly 120 includes a motor 121 and a worm 122 connected to the output shaft of the motor 121. The gear transmission assembly 200 includes a double gear 210 meshing with the worm 122, sector gears 220 corresponding to each locking pin 110 one by one, and racks 230 meshing with each sector gear 220 one by one. The sector gears 220 are meshed in sequence, the double gear 210 meshes with one sector gear 220, and each rack 230 is respectively connected to the corresponding locking pin 110 through a buffer seat 240; when the worm 122 rotates forward and backward, it drives each locking pin 110 to synchronously extend or retract into the housing 100 through the gear transmission assembly 200; the housing 100 is connected with a four-core interface 130 that cooperates with a four-core plug. The four-core interface 130 is connected with a first terminal 140 and a second terminal 150 that are respectively electrically connected to the motor 121. The first terminal 140 and the second terminal 150 are respectively provided with an electrical connection head 141 electrically connected to the motor 121 and a limit head 142 for pressing and limiting the end of the motor 121 away from the output shaft. The bottom of the motor 121 is respectively provided with connection ports electrically connected to the two electrical connection heads 141; a PCB board 160 is disposed inside the housing 100. A microswitch 170 is disposed on the PCB board 160. The four-core interface 130 is connected with a third terminal 180 and a fourth terminal 190 that are electrically connected to the PCB board 160. When the locking pin 110 extends or retracts into the housing 100, a rack 230 presses or stops pressing the swing arm of the microswitch 170, so that the third terminal 180 and the fourth terminal 190 are electrically connected or separated.

[0035] The housing 100 is further connected with an emergency unlocking device for driving each locking pin 110 to synchronously retract into the housing 100. The emergency unlocking device is connected with a sector gear 220 meshing with a double gear 210. The emergency unlocking device includes a sleeve 310 connected to the housing 100, an unlocking knob 320 rotatably connected to the housing 100, a wire 330 with one end passing through the sleeve 310 and connecting the unlocking knob 320, and a clutch sleeve 340 with one end connected to the unlocking knob 320. An arc-shaped groove 350 is provided on the sector gear 220 meshing with the double gear 210. The other end of the clutch sleeve 340 is connected with a boss 360 slidably arranged in the arc-shaped groove 350. When the wire 330 is stretched, it drives the clutch sleeve 340 to move, so that the boss 360 pushes the sector gear 220 meshing with the double gear 210 to rotate, driving each locking pin 110 to synchronously retract into the housing 100. When the worm 122 rotates forward and backward to drive each sector gear 220 to rotate to drive each locking pin 110 to synchronously extend or retract into the housing 100, the boss 360 idles along the arc-shaped groove 350. A return spring 370 with two ends respectively connected to the clutch sleeve 340 and the housing 100 is sleeved on the clutch sleeve 340. The return spring 370 is used to drive the rotating clutch sleeve 340 and the unlocking knob 320 to reset. The housing 100 is provided with two limit blocks 380 for limiting the position of the rotating unlocking knob 320.

[0036] The working principle of the electronic lock capable of simultaneously expanding and contracting the locking pins in multiple directions provided by the embodiment of the present application is as follows: An external four-core plug is inserted and connected to a four-core interface 130 connected to the housing 100. An external power supply forms a loop power supply with the motor 121 of the motor assembly 120 through a first terminal 140 and a second terminal 150. At this time, the motor 121 can be controlled to drive the output shaft to rotate forward and backward, driving the connected worm 122 to rotate, driving the meshing double gear 210 to rotate forward and backward. The double gear 210 drives a meshing sector gear 220 to rotate, and then drives each sequentially meshing sector gear 220 to rotate synchronously, thereby driving the racks 230 meshing with each sector gear 220 to respectively move axially along the corresponding locking pins 110, pushing the buffer seats 240 connected to each rack 230 to drive the corresponding locking pins 110 to move axially to extend or retract from the housing 100 to achieve the locking and unlocking functions.

[0037] When the locking pin 110 moves axially and extends out of the housing 100, a rack 230 presses against the swing arm of the microswitch 170 to electrically connect the third terminal 180 and the fourth terminal 190. Then, a circuit is formed through the third terminal 180, the fourth terminal 190, and the four-core interface 130 they are connected to, and a locking signal is output through the four-core plug. When the locking pin 110 moves axially and retracts into the housing 100, it drives the rack 230 to move and stop pressing against the swing arm of the microswitch 170, separating the third terminal 180 and the fourth terminal 190. The circuit formed by the third terminal 180, the fourth terminal 190, and the four-core interface 130 they are connected to is disconnected, and an unlocking signal is output through the four-core plug.

[0038] The first terminal 140 and the second terminal 150 are respectively convexly provided with an electrical connection head 141 electrically connected to the motor 121 and a limiting head 142 for pressing and limiting the end of the motor 121. The first terminal 140 and the second terminal 150 connected by the four-core interface 130 and the two electrical connection heads 141 can be used to connect with the motor 121 to form a stable power supply circuit. The limiting head 142 connected by the first terminal 140 and the second terminal 150 presses against and limits the other end of the motor 121 away from the output shaft, ensuring the stability of the motor 121 fixed within the housing 100.

[0039] When in the locked state, the operator can use the emergency unlocking device to release the locking state of the locking pin 110. Specifically, the operator pulls the wire 330, causing the wire 330 to move along the sleeve 310 and drive the unlocking knob 320 to rotate. When the unlocking knob 320 rotates, it drives the clutch sleeve 340 to rotate against the elastic pulling force of the return spring 370, causing the boss 360 connected to the clutch sleeve 340 to move along the arc-shaped groove 350 to the end point and then press against the inner wall of the arc-shaped groove 350, driving the sector gear 220 meshing with the double gear 210 to rotate. Then, it drives each sequentially meshing sector gear 220 to rotate, so that each sector gear 220 rotates and drives the corresponding meshing rack 230 to move axially along the axis of the corresponding locking pin 110 respectively, pushing the buffer seat 240 connected to each rack 230 to drive the corresponding locking pin 110 to move axially and retract into the housing 100 to achieve the emergency unlocking function. After the operator stops pulling the wire 330, the elastic pulling force of the return spring 370 drives the clutch sleeve 340 and the unlocking knob 320 to rotate in the reverse direction and reset. At the same time, when the motor 121 drives the output shaft to rotate forward and backward, the worm 122 connected rotates to drive the meshing double gear 210 to rotate forward and backward. When the double gear 210 drives the meshing sector gear 220 to rotate reciprocally, the arc-shaped groove 350 of the sector gear 220 rotates to keep the boss 360 rotating freely along the arc-shaped groove 350 without pressing against the inner wall of the arc-shaped groove 350. The housing 100 is provided with two limit blocks 380 for limiting the position of the rotating unlocking knob 320 to prevent the unlocking knob 320 from rotating excessively and causing damage to the internal structure.

[0040] In other optional embodiments, the housing 100 can also be connected to more than two locking pins 110 that can be extended and retracted in different directions. In this case, the gear transmission assembly 200 includes a double gear 210 meshing with the worm 122, a sector gear 220 corresponding to each locking pin 110, and a rack 230 meshing with each sector gear 220. Each sector gear 220 is meshed in sequence, the worm 122 is meshed with a sector gear 220, and each rack 230 is connected to the corresponding locking pin 110 through a buffer seat 240.

[0041] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. An electronic lock with a lock pin that can be extended and retracted in multiple directions simultaneously, characterized in that: It includes a shell, at least two locking pins that can be telescopically connected to the shell in different directions, and a motor assembly and a gear transmission assembly arranged in the shell. The motor assembly includes a motor and a worm connected to the motor output shaft. When the worm rotates forward or reversely, the gear transmission assembly drives each of the locking pins to extend or retract back to the shell synchronously.

2. The electronic lock with a lock pin that can be extended and retracted in multiple directions simultaneously according to claim 1, characterized in that: The gear transmission assembly includes a double gear meshing with the worm, a sector gear corresponding to each of the locking pins, and a rack meshing with each of the sector gears. Each of the sector gears is meshed in sequence, the double gear is meshed with one of the sector gears, and each of the racks is connected to the corresponding locking pin.

3. The electronic lock with a lock pin that can be extended and retracted in multiple directions simultaneously according to claim 2, characterized in that: Each of the racks is connected to the locking pin via a corresponding buffer seat.

4. The electronic lock with a lock pin that can be extended and retracted in multiple directions simultaneously according to claim 1, characterized in that: The shell is connected with a four-core interface matched with a four-core plug, and the four-core interface is connected with a first terminal and a second terminal respectively electrically connected to the motor.

5. The electronic lock with a lock pin that can be extended and retracted in multiple directions simultaneously according to claim 4, characterized in that: A PCB board is provided in the shell, a micro switch is provided on the PCB board, the four-core interface is connected with a third terminal and a fourth terminal electrically connected to the PCB board, and the locking pin pushes the swing arm of the micro switch when extending or retracting back into the shell, so that the third terminal and the fourth terminal are electrically connected or separated.

6. The electronic lock with a lock pin that can be extended and retracted in multiple directions simultaneously according to claim 2, characterized in that: The housing is also connected to an emergency unlocking device for driving each of the locking pins to synchronously retract back into the housing, and the emergency unlocking device is connected to the sector gear meshing with the worm.

7. The electronic lock with a lock pin that can be extended and retracted in multiple directions simultaneously according to claim 6, characterized in that: The emergency unlocking device includes a sleeve connected to the shell, an unlocking knob rotatably connected to the shell, a pull wire with one end passing through the sleeve and connected to the unlocking knob, and a clutch sleeve with one end connected to the unlocking knob. The sector gear engaged with the worm is provided with an arc groove, and the other end of the clutch sleeve is connected to a boss slidably arranged in the arc groove; when the pull wire is stretched, it drives the clutch sleeve to move, so that the boss pushes the sector gear engaged with the worm to rotate and drives each of the locking pins to synchronously retract back to the shell; when the worm drives each of the sector gears to rotate in the forward and reverse directions and drives each of the locking pins to synchronously extend or retract back to the shell, the boss is caused to idle along the arc groove.

8. The electronic lock with a lock pin that can be extended and retracted in multiple directions simultaneously according to claim 7, characterized in that: The clutch sleeve is provided with a return spring with two ends respectively connected to the clutch sleeve and the housing, and the return spring is used for driving the rotating clutch sleeve and the unlocking knob to return to their original position.

9. The electronic lock with a lock pin that can be extended and retracted in multiple directions simultaneously according to claim 4, characterized in that: The first terminal and the second terminal are respectively provided with an electrical connector electrically connected to the motor and a limiter for pressing and limiting the end of the motor.

10. The electronic lock with a lock pin that can be extended and retracted in multiple directions simultaneously according to claim 1, characterized in that: The axes of at least two of the locking pins are arranged vertically.

Images