CN114784562B

CN114784562B - Differential transmission mechanism, electronic lock and charging equipment

Info

Publication number: CN114784562B
Application number: CN202210422030.6A
Authority: CN
Inventors: 曹海忠; 陈广新; 凌梦婷; 黄芳宇
Original assignee: Dongguan Southeast New Energy Technology Co ltd
Current assignee: Dongguan Southeast New Energy Technology Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2024-01-12
Anticipated expiration: 2042-04-21
Also published as: CN114784562A

Abstract

The invention relates to the technical field of charging equipment, in particular to a differential transmission mechanism, which comprises: screw rod, the nut of socket joint screw rod, the ejector pad of socket joint nut. One end of the screw rod is a driving end. The driving end is provided with a first stop part. When the nut moves to the first stop, the nut is limited by the first stop so that the nut and the screw rotate synchronously. The push block is in linear sliding arrangement and is provided with internal threads for engaging the nut. The pushing block is provided with a second stop part at one end which is away from the first stop part. When the nut moves to the second stop part, the nut is limited by the second stop part so that the nut and the pushing block synchronously slide linearly. The invention further provides an electronic lock and charging equipment. The beneficial effects of the invention are as follows: the differential transmission mechanism is formed by the screw, the nut and the push block, so that the resistance from the driver is reduced when a user is manually unlocked, the acting force required to be applied when the user is manually unlocked is reduced, and the user experience is improved.

Description

Differential transmission mechanism, electronic lock and charging equipment

Technical Field

The present invention relates to the field of charging devices, and more particularly, to a differential transmission mechanism, an electronic lock including the differential transmission mechanism, and a charging device including the electronic lock.

Background

With the popularization of new energy automobiles, charging equipment is also increasingly widely applied, such as charging piles and vehicle-end charging seats. Based on the safety in use, an electronic lock (also called a locker) is usually arranged on a charging gun or a charging seat at the vehicle end of the charging pile, so as to prevent the equipment from falling off in the charging process and reduce the risk of electric shock of a user. Taking the charging gun as an example, in the charging process, the electronic lock locks the buckling piece of the charging interface of the charging gun for buckling the new energy automobile (for example, the buckling piece is propped up by the locking piece), even if a user touches the unlocking switch, the buckling piece cannot be recovered, and the charging interface of the charging gun and the new energy automobile is ensured to be maintained in a connection state. After the charging is finished, the electronic lock receives an unlocking signal of the control system, the driver in the electronic lock acts to release the limit on the buckling piece, a user can control the buckling piece to be recovered by operating the unlocking switch, and then the charging gun can be pulled out of the charging interface of the new energy automobile. In consideration of an emergency (for example, failure of a control system or failure of a driver of the electronic lock), the electronic lock is generally provided with a manual unlocking mechanism, and a user can manually force the electronic lock to enter an unlocking state through the manual unlocking mechanism, so that the limitation of the charging gun is released.

The traditional electronic lock has the following defects: when a user operates the manual unlocking mechanism, resistance caused by torque of the driver of the electronic lock needs to be overcome, and in order to increase the torque of the driver, most manufacturers often also provide a gear box (also called a speed reducer). Therefore, the user needs to apply a large force to drive the manual unlocking mechanism to act so as to achieve the purpose of manual unlocking, and the user experience is poor.

Disclosure of Invention

Based on the above, the differential transmission mechanism provided by the invention is formed by the screw, the nut and the pushing block, so that the resistance from the driver is reduced when a user is manually unlocked, the acting force required to be applied when the user is manually unlocked is reduced, and the user experience is improved.

A differential transmission mechanism comprising:

a screw; one end of the screw rod is a driving end; the driving end is used for connecting with the driver and is provided with a first stop part;

sleeving a nut of the screw rod; when the nut moves to the first stopping part, the nut is limited by the first stopping part so that the nut and the screw synchronously rotate; and

a push block sleeved with a nut; the pushing block is used for connecting the locking piece and the manual unlocking mechanism and is in linear sliding arrangement; the pushing block is provided with an internal thread for engaging the nut; the pushing block, the nut and the screw are coaxially arranged; a second stop part is arranged at one end of the push block, which is away from the first stop part; when the nut moves to the second stop part, the nut is limited by the second stop part so that the nut and the pushing block synchronously slide linearly.

When the differential transmission mechanism is used, the screw rod is connected with the driver of the electronic lock to obtain power, and the pushing block is connected with the locking piece of the electronic lock and the manual unlocking mechanism. When the electronic lock is carried out, the screw rod is driven by the driver to rotate positively, and at the moment, the nut rotates 360 degrees relative to the screw rod and moves linearly in the direction approaching to the pushing block. When the nut moves to the second stop part of the push block, the nut stops rotating and drives the push block to linearly move forward under the limit of the second stop part. When the electrons are unlocked, the screw rod is reversely rotated under the drive of the driver, and at the moment, the nut linearly moves in the direction deviating from the pushing block while rotating 360 degrees relative to the screw rod. When the nut moves to the first stop part of the screw rod, the nut is static relative to the screw rod and drives the push block to linearly move backwards under the limit of the first stop part. When the manual unlocking is carried out, the push block moves backwards under the drive of the manual unlocking mechanism, at the moment, the nut is pushed by the push block to move backwards under the limit of the second stop part, and the nut can rotate 360 degrees relative to the screw rod before the nut moves to the first stop part, so that the manual unlocking mechanism cannot receive resistance caused by torque from the driver in the process, and the acting force required to be applied by a user during manual unlocking is reduced. Through the design, the screw, the nut and the pushing block form a differential transmission mechanism, so that the resistance from the driver is reduced when a user is manually unlocked, the acting force required to be applied when the user is manually unlocked is reduced, and the user experience is improved.

In one embodiment, the outer side of the push block is provided with linear convex strips or grooves. The linear convex strips or grooves are in sliding connection with the base of the electronic lock, so that the motion track of the push block is limited to linear sliding.

In one embodiment, the outside of the push block is provided with a clamping part; the clamping part is used for clamping the manual unlocking mechanism. The push block and the manual unlocking mechanism can be quickly assembled and disassembled by the aid of the clamping portion, and the manual unlocking mechanism is convenient to use and simple in structure.

In one embodiment, a poking piece is arranged on the outer side of the pushing block; the poking piece is used for triggering a micro switch of the signal feedback mechanism. When the push block moves linearly, the poking plate moves synchronously with the push block, so that the corresponding micro switch is triggered, the purpose of signal feedback is achieved, and the structure is simple and reliable.

Meanwhile, the invention further provides an electronic lock.

An electronic lock comprising a differential transmission mechanism according to any of the embodiments described above; the electronic lock further includes: the device comprises a driver, a locking piece, a manual unlocking mechanism, a signal feedback mechanism and a base, which are respectively connected with a differential transmission mechanism; the differential transmission mechanism, the driver, the locking piece, the manual unlocking mechanism and the signal feedback mechanism are respectively arranged on the base; the driver is connected with the driving end; the locking piece, the manual unlocking mechanism and the signal feedback mechanism are respectively connected with the push block.

The differential transmission mechanism of the electronic lock is used as a transmission medium between the driver and the locking piece and between the driver and the manual unlocking mechanism. The differential transmission mechanism is formed by the screw, the nut and the push block, so that when a user operates the manual unlocking mechanism to perform manual unlocking, the resistance from the driver is reduced, the acting force required to be applied by the user during manual unlocking is reduced, and the user experience is improved.

In one embodiment, a driver includes: a gear box connected with the driving end and a motor connected with the gear box. The gearbox can promote the moment of torsion that the motor output, under the prerequisite that adopts low-power motor, can provide sufficient moment of torsion in order to drive differential drive mechanism work.

In one embodiment, the locking member is a protruding rod connected to the push block and arranged offset from the screw. The protruding rod can follow the synchronous action of ejector pad to protruding rod and screw rod dislocation set reduce the interference of protruding rod and screw rod, reduce the degree of difficulty of equipment.

In one embodiment, the manual unlocking mechanism includes: the device comprises a pull rod connected with a push block, an unlocking rope connected with the pull rod and an elastic piece positioned between the pull rod and a base; one end of the unlocking rope is connected with the pull rod, and the other end of the unlocking rope extends to the outside of the base; the elastic element provides the pull rod with the force required for resetting. When the unlocking is performed manually, a user operates the unlocking rope to drive the pull rod to move towards the unlocking direction, so that the push block is driven to move backwards for unlocking, and meanwhile, the elastic piece is extruded and deformed by the push block. When the user removes the acting force applied to the unlocking rope, the pull rod is driven by the deformation force of the elastic piece to reset.

In one embodiment, the signal feedback mechanism comprises: a PCBA connected with the driver, and a first micro switch and a second micro switch respectively arranged on the PCBA; the PCBA is integrated with a resistor; the first micro-switch and the second micro-switch are positioned on the same straight line and are parallel to the axial direction of the screw rod. When the electronic lock is in a locking state, the push block triggers one of the first micro switch and the second micro switch, and a feedback electric signal reflecting the locking state is sent out to the outside through the PCBA integrated with the resistor. When the electronic lock is in an unlocking state, the push block triggers the other one of the first micro switch and the second micro switch, and a feedback electric signal reflecting the unlocking state is sent out to the outside through the PCBA integrated with the resistor. In addition, the PCBA is also used as an intermediate medium for connecting the driver and the control system of the charging equipment, so that the integration degree of the equipment is improved.

In addition, the invention also provides charging equipment.

A charging device comprising an electronic lock of any of the embodiments described above.

The charging device comprises an electronic lock with a differential transmission mechanism. The differential transmission mechanism is used as a transmission medium between the driver and the locking piece and between the driver and the manual unlocking mechanism. The differential transmission mechanism is formed by the screw, the nut and the push block, so that when a user operates the manual unlocking mechanism to perform manual unlocking, the resistance from the driver is reduced, the acting force required to be applied by the user during manual unlocking is reduced, and the user experience is improved.

Drawings

FIG. 1 is a perspective view of a differential drive mechanism according to one embodiment of the present invention;

FIG. 2 is a perspective view of the differential drive mechanism of FIG. 1 from another perspective;

FIG. 3 is an exploded view of the differential drive mechanism shown in FIG. 1;

FIG. 4 is a cross-sectional view of the differential drive mechanism shown in FIG. 1;

FIG. 5 is an electric lock state diagram of the differential drive mechanism shown in FIG. 1;

FIG. 6 is an electrically unlocked state of the differential drive mechanism shown in FIG. 1;

FIG. 7 is a perspective view of an electronic lock according to one embodiment of the present invention;

FIG. 8 is a top view of the electronic lock shown in FIG. 7;

FIG. 9 is an exploded view of the electronic lock shown in FIG. 7;

FIG. 10 is a partial view of the electronic lock shown in FIG. 7;

fig. 11 is a partial view of another view of the electronic lock shown in fig. 7.

The meaning of the reference numerals in the drawings are:

100-electronic lock;

10-differential transmission mechanism, 11-screw rod, 111-first stop part, 12-nut, 13-push block, 131-second stop part, 132-raised line, 133-plectrum, 134-clamping part;

20-driver, 21-gear box, 22-motor;

30-locking piece;

40-manual unlocking mechanism, 41-pull rod, 42-unlocking rope, 43-elastic piece and 44-sleeve;

50-a signal feedback mechanism, 51-a PCBA, 52-a first micro-switch and 53-a second micro-switch;

60-base;

70-gasket.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

As shown in fig. 1 to 6, a differential transmission mechanism 10 according to an embodiment of the present invention is shown.

As shown in fig. 1 to 3, the differential transmission mechanism 10 includes: screw 11, nut 12 of socket screw 11, push block 13 of socket nut 12. The screw 11 is used for connecting with a driver of the electronic lock to obtain driving force required for rotation. The push block 13 is used for connecting a locking piece of the electronic lock and a manual unlocking mechanism. The nut 12 is used as a transmission medium between the screw 11 and the push block 13 to achieve the purpose of differential transmission.

Hereinafter, the differential transmission mechanism 10 described above will be further described with reference to fig. 1 to 6.

As shown in fig. 3, in this embodiment, the screw 11 is a straight rod structure and has an external thread on its surface. One end of the screw 11 is a driving end, and the driving end is used for connecting a driver and is provided with a first stop part 111. As shown in fig. 4 and 6, when the nut 12 moves to the first stopper 111, the nut 12 is restricted by the first stopper 111 so that the nut 12 rotates in synchronization with the screw 11.

For example, as shown in fig. 4 and 6, in the present embodiment, the first stopper 111 is a stopper located at the driving end of the screw 11, and when the nut 12 moves to abut against the first stopper 111, the screw 11 rotates in synchronization with the screw 11.

As shown in fig. 3, in the present embodiment, the nut 12 is provided with a sleeve structure, and the outer surface of the nut 12 is provided with external threads engaged with the push block 13, and the inner wall of the inner hole of the nut 12 is provided with internal threads engaged with the external threads of the screw 11.

As shown in fig. 4, the push block 13 is provided in a linear sliding manner. In the present embodiment, as shown in fig. 3, the push block 13 is provided in a sleeve structure. An internal thread for engaging the nut 12 is provided on the inner wall of the inner hole of the push block 13. As shown in fig. 4, the push block 13, the nut 12 and the screw 11 are coaxially arranged, that is, a multi-sleeve structure is formed by sequentially sleeving from outside to inside. As shown in fig. 4, the end of the push block 13 facing away from the first stop portion 111 is provided with a second stop portion 131. As shown in fig. 4 and 5, when the nut 12 moves to the second stopper 131, the nut 12 is restricted by the second stopper 131 so that the nut 12 linearly slides in synchronization with the push block 13.

For example, as shown in fig. 4 and 5, in the present embodiment, the second stopper 131 is a stopper located at an end of the push block 13 facing away from the first stopper 111, and when the nut 12 moves to abut against the second stopper 131, the screw 11 slides linearly in synchronization with the push block 13.

In order to limit the movement locus of the push block 13 to linear sliding, as shown in fig. 3, a linear protrusion 132 is provided on the outer side of the push block 13 in the present embodiment. In other embodiments, the ribs 132 may be replaced with grooves. The linear convex strips 132 or grooves are in sliding connection with the base of the electronic lock, so that the movement track of the push block 13 is limited to linear sliding.

In order to limit the movement track of the push block 13 to linear sliding, in other embodiments, a linear guide rod or a linear sleeve may be provided on the push block 13.

In order to connect the push block 13 with the signal feedback mechanism of the electronic lock, as shown in fig. 2, in this embodiment, a pulling piece 133 is disposed on the outer side of the push block 13. The pulling piece 133 is used for triggering a micro switch of the signal feedback mechanism. When the push block 13 moves linearly, the poking plate 133 moves synchronously with the push block 13, so that the corresponding micro switch is triggered, the purpose of signal feedback is achieved, and the structure is simple and reliable.

In order to connect the push block 13 to the manual unlocking mechanism of the electronic lock, as shown in fig. 3, in this embodiment, a locking portion 134 is provided on the outer side of the push block 13. The locking portion 134 is used for locking the manual unlocking mechanism. The push block 13 and the manual unlocking mechanism can be quickly assembled and disassembled by using the clamping part 134, so that the device is convenient to use and simple in structure.

The working principle is briefly described:

in use, the screw 11 is connected to the drive of the electronic lock to obtain power, while the push block 13 is connected to the locking member of the electronic lock and to the manual unlocking mechanism.

When the control system and the driver of the charging device are operating normally:

referring to fig. 4, when the electronic lock is performed, the screw 11 is driven by the driver to rotate forward, and at this time, the nut 12 rotates 360 ° relative to the screw 11 and moves (advances) in a direction approaching the push block 13. As shown in fig. 4 and 5, when the nut 12 moves to the second stop 131 of the push block 13, the nut 12 stops rotating and drives the push block 13 to linearly move forward under the restriction of the second stop 131. At this time, it can be understood that the nut 12 and the push block 13 are integrated, which is equivalent to that the push block 13 is directly sleeved on the screw 11, and the screw 11 can rotate to drive the push block 13 to move forward.

Referring to fig. 4, when the electronic unlocking is performed, the screw 11 is reversed under the driving of the driver, and at this time, the nut 12 linearly moves (moves backward) in a direction away from the push block 13 while rotating 360 ° with respect to the screw 11. As shown in fig. 4 and 6, when the nut 12 moves to the first stop 111 of the screw 11, the nut 12 is stationary relative to the screw 11 and drives the push block 13 to linearly move backward under the restriction of the first stop 111. At this time, it can be understood that the nut 12 and the screw 11 are integrated, which is equivalent to that the push block 13 is directly sleeved on the screw 11, and the screw 11 can rotate to drive the push block 13 to move backwards.

In emergency situations, when manual unlocking is needed:

as shown in fig. 4 and 5, when the nut 12 is unlocked manually, the push block 13 is moved backward under the drive of the manual unlocking mechanism, and at this time, the nut 12 is forced to be pushed by the push block 13 and moved backward under the limitation of the second stop portion 131, and before the nut 12 moves to the first stop portion 111, the nut 12 can rotate 360 ° relative to the screw 11 and move toward the first stop portion 111 along the axial direction of the screw 11. Therefore, in the process, the manual unlocking mechanism is not subjected to resistance caused by torque from the driver, and the acting force required to be applied by a user during manual unlocking is reduced.

Thus, upon manual unlocking, it is possible to subdivide the following two cases:

case 1: in the whole process of completing manual unlocking, the nut 12 still does not reach the first stop part 111, the push block 13 drives the nut 12 to linearly move along the direction close to the first stop part 111 while rotating 360 degrees on the screw 11, a user does not receive resistance from a driver, and only the resistance brought by the manual unlocking mechanism is overcome, so that manual unlocking is easily completed.

Case 2: in the front section of manual unlocking, the nut 12 does not reach the first stop part 111, the push block 13 drives the nut 12 to rotate 360 degrees on the screw 11 and simultaneously linearly move along the direction close to the first stop part 111, the screw 11 is kept in a static state at this stage, a user does not receive resistance from a driver, and only the resistance caused by the manual unlocking mechanism is overcome, so that the push block 13 is easily driven to start and move backwards. In the rear stage of manual unlocking, when the nut 12 moves to the first stop part 111 of the screw 11, under the limitation of the first stop part 111, the nut 12 is static relative to the screw 11 (at this time, the nut 12 and the screw 11 can be understood as an integral structure), under the driving of the push block 13, the nut 12 and the screw 11 synchronously rotate, the user receives the resistance from the driver, the resistance brought by the manual unlocking mechanism and the driver needs to be overcome, and compared with the front stage, the applied acting force needs to be increased to drive the push block 13 to continuously move backwards so as to finish manual unlocking.

In both cases, case 1 is an ideal state. In the actual design scenario, the selection of the case 1 and the case 2 is related to the length of the screw 11, the stroke of the nut 12 on the screw 11, the position of the push block 13 in the locking state and the unlocking state, and other factors.

The differential transmission mechanism 10 is formed by the screw 11, the nut 12 and the push block 13, so that the resistance from the driver is reduced when the user is manually unlocked, the acting force required by the user when the user is manually unlocked is reduced, and the user experience is improved.

As shown in fig. 7 to 11, an electronic lock 100 according to an embodiment of the present invention is shown.

As shown in fig. 7 to 9, the electronic lock 100 includes: the differential transmission mechanism 10, and a driver 20, a lock 30, a manual unlocking mechanism 40, a signal feedback mechanism 50, and a base 60, which are respectively connected to the differential transmission mechanism 10. Wherein, differential transmission mechanism 10, driver 20, locking member 30, manual unlocking mechanism 40, and signal feedback mechanism 50 are respectively mounted on base 60. Wherein the driver 20 is connected to the differential transmission mechanism 10. The lock 30, the manual unlocking mechanism 40, and the signal feedback mechanism 50 are connected to the push block 13, respectively.

For the description of the differential transmission mechanism 10, please refer to the above, and the description thereof is omitted herein.

As shown in fig. 10 and 11, in the present embodiment, the driver 20 is connected to the driving end of the screw 11.

Further, as shown in fig. 10, in the present embodiment, the driver 20 includes: a gear box 21 connected to the driving end and a motor 22 connected to the gear box 21. The gearbox 21 can boost the torque output by the motor 22, and can provide enough torque to drive the differential transmission mechanism 10 to work on the premise of adopting the low-power motor 22.

It should be noted that, in other embodiments, the gear case 21 may be omitted if the motor 22 can provide sufficient torque.

As shown in fig. 10, in the present embodiment, the locking member 30 is a protruding rod connected to the push block 13 and offset from the screw 11. The protruding rod can follow the synchronous action of ejector pad 13 to protruding rod and screw rod 11 dislocation set reduce protruding rod and screw rod 11's interference, reduce the degree of difficulty of equipment.

As shown in fig. 10, in the present embodiment, the manual unlocking mechanism 40 includes: a pull rod 41 connected to the push block 13, an unlocking rope 42 connected to the pull rod 41, and an elastic member 43 located between the pull rod 41 and the base 60. One end of the unlocking string 42 is connected to the pull rod 41, and the other end of the unlocking string 42 extends to the outside of the base 60. The elastic member 43 provides the restoring force for the tie rod 41. When the push block 13 is manually unlocked, the user operates the unlocking rope 42 to drive the pull rod 41 to move towards the unlocking direction, so that the push block 13 is driven to move backwards for unlocking, and meanwhile, the elastic piece 43 is extruded and deformed by the push block 13. When the user removes the force applied to the unlocking string 42, the pull rod 41 is reset under the deformation force of the elastic member 43.

For example, as shown in fig. 10, in the present embodiment, the pull rod 41 has a T-shaped structure, and when assembled, the tail portion of the pull rod 41 is inserted into the engagement portion 134 of the push block 13, so that the head portion of the pull rod 41 is engaged with the engagement portion 134 of the push block 13. When the user operates the unlocking rope 42 to pull back, the pull rod 41 drives the push block 13 to move back to unlock, and forces the spring to be compressed. After the user removes the force on the unlocking string 42, the spring releases the deformation force to push the pull rod 41 to return, and at this time, the push block 13 does not return following the action of the pull rod 41.

Further, as shown in fig. 10, in the present embodiment, the manual unlocking mechanism 40 further includes: the sleeve 44 of the unlocking rope 42 is sleeved, one end of the sleeve 44 is clamped on the base 60, and the other end of the sleeve 44 extends to the outside of the base 60. The sleeve 44 is used to protect the release cord 42 and, at the same time, to provide a seal to prevent external liquids or dust from entering the base 60 from the release cord 42 and entering the base 60.

As shown in fig. 11, in the present embodiment, the signal feedback mechanism 50 includes: a PCBA51 connected to the driver 20, and a first micro switch 52 and a second micro switch 53 mounted on the PCBA51, respectively. Wherein the PCBA51 is integrated with a resistor. The first micro switch 52 and the second micro switch 53 are positioned on the same line and parallel to the axial direction of the screw 11. For example, as shown in fig. 11, when the electronic lock 100 is in the locked state, the push block 13 triggers the first micro switch 52, and a feedback electric signal reflecting the locked state is externally transmitted via the PCBA51 integrated with a resistor. When the electronic lock 100 is in the unlocked state, the push block 13 triggers the second micro switch 53, and sends out a feedback electric signal reflecting the unlocked state to the outside via the PCBA51 integrated with the resistor. In addition, the PCBA51 also serves as an intermediate medium for connecting the driver 20 to the control system of the charging device, thereby improving the integration degree of the device.

It should be noted that, in other embodiments, the signal feedback mechanism 50 may further include a plurality of micro switches, for example, a third micro switch is disposed between the first micro switch 52 and the second micro switch 53, and the first micro switch 52, the third micro switch, and the second micro switch 53 are sequentially disposed along a straight line. The third microswitch may reflect a transition between locked and unlocked. Similarly, more other microswitches can be introduced according to design requirements.

Furthermore, in some embodiments, the signal feedback mechanism 50 in the electronic lock 100 may also be omitted.

As shown in fig. 8 and 9, in this embodiment, the electronic lock 100 may further include: a gasket 70 mounted at the junction of the base 60 and the locking member 30. As shown in fig. 8, the gasket 70 is sleeved on the locking member 30.

In the electronic lock, the differential transmission mechanism 10 serves as a transmission medium between the driver 20 and the lock member 30, and between the driver 20 and the manual unlocking mechanism 40. The screw 11, the nut 12 and the push block 13 form a differential transmission mechanism, so that when a user operates the manual unlocking mechanism 40 to perform manual unlocking, the resistance from the driver 20 is reduced, the acting force required to be applied by the user during manual unlocking is reduced, and the user experience is improved.

In addition, the invention also provides charging equipment.

The charging device comprises the electronic lock of the embodiment. Further, the charging device may be a charging gun or a vehicle-end charging stand.

The charging device includes an electronic lock 100 having a differential transmission mechanism 10. The differential transmission mechanism 10 serves as a transmission medium between the driver 20 and the lock 30, and between the driver 20 and the manual unlocking mechanism 40. The screw 11, the nut 12 and the push block 13 form a differential transmission mechanism, so that when a user operates the manual unlocking mechanism 40 to perform manual unlocking, the resistance from the driver 20 is reduced, the acting force required to be applied by the user during manual unlocking is reduced, and the user experience is improved.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples only represent preferred embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. An electronic lock, comprising: a differential transmission mechanism; the differential transmission mechanism includes: the device comprises a screw rod, a nut sleeved with the screw rod and a pushing block sleeved with the nut; one end of the screw rod is a driving end; the driving end is used for being connected with the driver and provided with a first stop part; when the nut moves to the first stop, the nut is limited by the first stop so that the nut and the screw synchronously rotate; the pushing block is used for connecting the locking piece and the manual unlocking mechanism and is in linear sliding arrangement; the pushing block is provided with internal threads which are meshed with the nut; the push block, the nut and the screw are coaxially arranged; a second stop part is arranged at one end of the push block, which is away from the first stop part; when the nut moves to the second stop part, the nut is limited by the second stop part so that the nut and the pushing block synchronously slide linearly; the electronic lock further includes: the driver, the locking piece, the manual unlocking mechanism, the signal feedback mechanism and the base are respectively connected with the differential transmission mechanism; the differential transmission mechanism, the driver, the locking piece, the manual unlocking mechanism and the signal feedback mechanism are respectively arranged on the base; the driver is connected with the driving end; the locking piece, the manual unlocking mechanism and the signal feedback mechanism are respectively connected with the push block.

2. The electronic lock of claim 1, wherein the driver comprises: a gear box connected with the driving end and a motor connected with the gear box.

3. The electronic lock of claim 1, wherein the locking member is a protruding rod connected to the push block and arranged offset from the screw.

4. The electronic lock of claim 1, wherein the manual unlocking mechanism comprises: the push rod is connected with the push block, the unlocking rope is connected with the push rod, and the elastic piece is positioned between the push rod and the base; one end of the unlocking rope is connected with the pull rod, and the other end of the unlocking rope extends to the outside of the base; the elastic piece provides the acting force required by resetting for the pull rod.

5. The electronic lock of claim 1, wherein the signal feedback mechanism comprises: the PCBA is connected with the driver, and the first micro switch and the second micro switch are respectively arranged on the PCBA; the PCBA is integrated with a resistor; the first micro-switch and the second micro-switch are positioned on the same straight line and are parallel to the axial direction of the screw rod.

6. Charging device, characterized by comprising an electronic lock according to any of claims 1 to 5.