A padlock

Abstract

The present invention discloses a padlock comprising: a lock body; a lock beam having a U-shaped section capable of forming a ring with the lock body, with locking grooves provided on opposite sides of the U-shaped section; two lock tongues slidably disposed on the lock body in opposite directions and connected to a first elastic member that drives the two tongues to slide in opposite directions and extend into the locking grooves; a shift fork rotatably disposed on the lock body; a combination wheel assembly rotatably disposed on the lock body and having an unlocking portion and a locking portion that can contact the lower portion of the shift fork; a second elastic member connected to the shift fork, capable of driving the upper portion of the shift fork to swing between the two lock tongues and driving the lower portion of the shift fork to remain against the unlocking portion or the locking portion; an electric clutch mechanism disposed in the lock body and capable of driving the upper portion of the shift fork to leave between the two lock tongues; and an identification module for controlling the operation of the electric clutch mechanism. Thus, the functions of electric unlocking and combination wheel assembly unlocking are integrated. In the event of a fault or power outage, the combination wheel assembly can be used for emergency unlocking without a key, thereby improving user convenience.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and in particular to a padlock. Background Art

[0002] Padlocks are the oldest and largest family of locks. It can be said that other locks are derived from padlocks. The lock body of the padlock is equipped with a ring-shaped lock beam that can be buckled, so that the padlock is directly buckled with the lock body through the lock beam to form a closed lock.

[0003] In the related art, in order to facilitate users to unlock the padlock without a key, the padlock is set to an electric opening method such as an electronic password or fingerprint recognition. In order to prevent the electric opening function from failing and causing the padlock to be unable to be opened, some electric padlocks still retain the key unlocking structure. Users still need to carry a key to complete emergency unlocking, which is inconvenient to use.

[0004] In addition, the internal space of the padlock is extremely limited. The key unlocking and electric unlocking structures have occupied the entire internal space of the padlock. Moreover, the structure is very complicated and cannot be further expanded or replaced by other unlocking methods. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a padlock with integrated electric unlocking and password wheel unlocking, which can be unlocked in an emergency without a key, thereby improving the convenience of use.

[0006] A padlock according to an embodiment of the present invention comprises: a lock body; a lock beam movably arranged on the lock body, the lock beam having a U-shaped section that can be surrounded by the lock body to form a ring, and locking grooves are provided on opposite sides of the U-shaped section; two lock tongues are slidably arranged on the lock body in opposite directions, and the two lock tongues are connected to a first elastic member that drives them to slide in opposite directions to extend into the locking grooves; a shift fork is swingably arranged on the lock body; a password wheel group is rotatably arranged on the lock body, and the password wheel group has an unlocking part and a locking part that can contact the lower part of the shift fork; a second elastic member is connected to the shift fork, which can drive the upper part of the shift fork to swing between the two lock tongues and drive the lower part of the shift fork to remain against the unlocking part or the locking part; an electric clutch mechanism is arranged in the lock body, which can drive the upper part of the shift fork to leave between the two lock tongues; and an identification module is electrically connected to the electric clutch mechanism for controlling the action of the electric clutch mechanism.

[0007] A padlock according to an embodiment of the present invention has at least the following beneficial effects:

[0008] The padlock with the above structure utilizes both the combination wheel set and the electric clutch mechanism to control the upper part of the shift fork to leave between the two lock tongues, thereby integrating the functions of electric unlocking and combination wheel set unlocking. When the electric clutch mechanism fails or the power is lost, the combination wheel set can be used for emergency unlocking without a key, thereby improving the convenience of use.

[0009] In some embodiments of the present invention, the locking groove is a horizontally open V-shaped groove, and the end of the lock tongue close to the V-shaped groove is provided with a convex portion corresponding to the V-shaped groove, and the end surface of the lock tongue away from the convex portion is provided with a first limiting portion, and the upper part of the shift fork is provided with a second limiting portion that can abut against the first limiting portion to prevent the shift fork from leaving between the two lock tongues. When the padlock is in a locked state, the convex portion abuts against the downward slope of the V-shaped groove so that there is a height gap and a horizontal gap between the convex portion and the V-shaped groove. When the password wheel group is in an unlocked state, the lock beam can move slightly downward to move the two lock tongues away from each other and cause the second limiting portion to disengage from the first limiting portion.

[0010] In some embodiments of the present invention, the electric clutch mechanism includes a motor and a thumbwheel provided on the output shaft of the motor, the thumbwheel is circumferentially spaced with a first eccentric portion and a second eccentric portion, the distance between the second eccentric portion and the axis of the output shaft of the motor is greater than the distance between the first eccentric portion and the axis of the output shaft of the motor, the shift fork can move up and down and swing back and forth relative to the lock body, the shift fork has a driving portion that contacts the first eccentric portion or the second eccentric portion, the second elastic member includes a tension spring connected between the middle portion of the shift fork and the lock body and a compression spring that drives the shift fork to reset downward, the first eccentric portion acts on the driving portion to lift the second limiting portion and the first limiting portion to be offset up and down.

[0011] In some embodiments of the present invention, the driving portion includes a protrusion protruding toward the thumbwheel, and the surface of the protrusion is concavely provided with a driving groove for accommodating the first eccentric portion, and the upper end of the driving groove is provided with a side block portion. After the first eccentric portion acts upward on the side block portion to lift it to the second limiting portion and the first limiting portion are misaligned up and down, the first eccentric portion leaves the driving groove and the side block portion, and the second eccentric portion can abut against the protrusion to drive the upper part of the fork away from between the two lock tongues.

[0012] In some embodiments of the present invention, a travel switch is provided in the lock body and is located above the dial. The travel switch is electrically connected to the electric clutch mechanism. When the second eccentric portion abuts against the protrusion, the first eccentric portion can trigger the travel switch.

[0013] In some embodiments of the present invention, a first vertical bar and a second vertical bar are formed on the end surface of the lock tongue away from the protrusion at intervals along the front-to-back direction, and a limiting groove constituting the first limiting portion is defined between the first vertical bar and the second vertical bar. The second limiting portion is formed on the side wall of the upper end of the fork to form a vertical convex bar extending into the limiting groove, and the height dimension of the vertical convex bar is smaller than the height dimension of the first vertical bar.

[0014] In some embodiments of the present invention, the password wheel group includes a horizontal axis member horizontally arranged at the lower part of the lock body, and a plurality of password gears rotating around its axial direction are passed through the horizontal axis member. The side of each password gear is provided with an unlocking disk coaxial with it, and there is a gap space for accommodating the unlocking disk between two adjacent password gears. The unlocking disk has an arc surface constituting the locking part and a planar part constituting the unlocking part. The lower part of the fork is provided with a plurality of push rods corresponding to the unlocking disk one by one. When all the push rods abut against the corresponding planar parts, the second elastic member drives the upper part of the fork to leave between the two lock tongues.

[0015] In some embodiments of the present invention, the upper portion of the lock body is provided with a sliding groove for the lock tongue to slide back and forth left and right, the lower portion of the lock body is provided with a first installation cavity for accommodating the password wheel group, and the middle portion of the lock body is provided with a second installation cavity for accommodating the electric clutch mechanism and the identification module. The second installation cavity and the first installation cavity are arranged opposite to each other in the front-to-back direction and are connected through a channel, and the output end of the electric clutch mechanism extends from the channel to contact the fork.

[0016] In some embodiments of the present invention, a sleeve is provided in the middle portion of the cipher gear for axial sliding along the transverse shaft, a plurality of engaging grooves are circumferentially distributed on the axial center of the transverse shaft, all of the sleeves are arranged in sequence and installed on the transverse shaft, an outer wall of the sleeve is provided with an engaging portion that can be combined with any of the engaging grooves, the unlocking disk is formed on the outside of the sleeve, one end of the transverse shaft is connected to a third elastic member that drives the sleeve to engage with the corresponding cipher gear, and the transverse shaft can drive the sleeve to separate from the corresponding cipher gear and cause the cipher gear to rotate relative to the sleeve.

[0017] In some embodiments of the present invention, the lock beam is provided with a plug-in column extending downward from one end of the U-shaped section, the lock body is provided with a column hole for the plug-in column to be lifted, moved and rotated, a fourth elastic member is provided in the column hole for driving the lock beam to move upward, and the lower end of the plug-in column is provided with a pushing portion that can contact the end of the horizontal axis away from the third elastic member.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0020] Figure 1 A schematic structural diagram of an embodiment of a padlock of the present invention in a locked state;

[0021] Figure 2 for Figure 1 Schematic diagram of the internal structure of the embodiment with the lock body removed;

[0022] Figure 3 for Figure 1 A cross-sectional schematic diagram of a padlock of an embodiment being unlocked using a combination wheel assembly;

[0023] Figure 4 for Figure 1 Another cross-sectional schematic diagram of the padlock of the embodiment being unlocked using the combination wheel assembly;

[0024] Figure 5 for Figure 1 A schematic diagram of the structure of the embodiment in which the lock beam, lock tongue, shift fork and password wheel assembly are separated;

[0025] Figure 6 for Figure 1 A schematic diagram of the partial structure of the padlock of the embodiment when unlocked by using the electric clutch mechanism.

[0026] Reference numerals:

[0027] Lock body 100; slide groove 110; first mounting cavity 120; second mounting cavity 130; lock beam 200; locking groove 210; plug post 220; push portion 230; lock tongue 300; protrusion 310; first limiting portion 320; first elastic member 330; shift fork 400; second limiting portion 410; drive portion 420; drive groove 421; side stop 422; push rod 430; combination wheel assembly 500; horizontal shaft 510 ; Code gear 520; Engaging groove 521; Unlocking disk 530; Locking portion 531; Unlocking portion 532; Bushing 540; Engaging portion 541; Third elastic member 550; Second elastic member 600; Tension spring 610; Compression spring 620; Electric clutch mechanism 700; Motor 710; Dial wheel 720; First eccentric portion 721; Second eccentric portion 722; Identification module 800; Travel switch 900; Fourth elastic member 910. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0029] In the description of the present invention, if there are descriptions of first, second, third, fourth, fifth, etc., they are only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the present invention, unless otherwise expressly defined, terms such as "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to direct connection or indirect connection through an intermediate medium; fixed connection or detachable connection or integral molding; mechanical connection; and internal communication between two components or interaction between two components. Those skilled in the art can reasonably determine the specific meanings of these terms in the present invention based on the specific content of the technical solution.

[0032] Reference Figures 1 to 6A padlock according to an embodiment of the present invention comprises: a lock body 100; a lock beam 200 movably provided on the lock body 100, the lock beam 200 having a U-shaped section capable of forming a ring with the lock body 100, and locking grooves 210 being provided on opposite sides of the U-shaped section; two lock tongues 300 slidably provided on the lock body 100 in opposite directions, the two lock tongues 300 being connected to a first elastic member 330 that drives the two lock tongues 300 to slide in opposite directions toward the locking grooves 210; a shift fork 400 rotatably provided on the lock body 100; a combination wheel assembly 500 rotatably provided on the lock body 100, the combination wheel assembly 500 having An unlocking portion 532 and a locking portion 531 that can contact the lower portion of the fork 400; a second elastic member 600, connected to the fork 400, capable of driving the upper portion of the fork 400 to swing between the two lock tongues 300 and driving the lower portion of the fork 400 to remain against the unlocking portion 532 or the locking portion 531; an electric clutch mechanism 700, arranged in the lock body 100, capable of driving the upper portion of the fork 400 to leave between the two lock tongues 300; an identification module 800, electrically connected to the electric clutch mechanism 700, for controlling the action of the electric clutch mechanism 700.

[0033] Among them, the lock beam 200 of a general padlock can be moved up and down and rotated relative to the lock body 100, see Figure 1 and Figure 2 When the U-shaped section is inserted into the lock body 100 and in place, the two lock tongues 300, driven by the first elastic member 330, extend into the two locking grooves 210 in opposite directions. The second elastic member 600 drives the upper portion of the shift fork 400 to swing between the two lock tongues 300, thereby preventing the two lock tongues 300 from approaching each other and disengaging the locking grooves 210. At this time, the shift fork 400, under the action of the second elastic member 600, abuts against the locking portion 531 of the combination wheel assembly 500, and the padlock is in the locked state. Figures 3 to 5 When the padlock needs to be unlocked, if the combination wheel set 500 is used for unlocking, when the combination wheel set 500 inputs the correct combination, the unlocking portion 532 on the combination wheel set 500 can be aligned with the lower part of the fork 400. At this time, the fork 400 can swing under the action of the second elastic member 600 until the upper part of the fork 400 leaves the space between the two lock tongues 300, and the lock beam 200 can rise and rotate relative to the lock body 100. Figure 6If the electric clutch mechanism 700 is used to unlock the door, the user first enters the correct identity information into the identification module 800. Once the identity information is verified, the electric clutch mechanism 700 can drive the shift fork 400 to swing until the upper portion of the shift fork 400 directly leaves the space between the two lock tongues 300. The padlock with the above structure uses both the combination wheel assembly 500 and the electric clutch mechanism 700 to control the upper portion of the shift fork 400 to leave the space between the two lock tongues 300, thereby integrating the functions of electric unlocking and unlocking by the combination wheel assembly 500. In the event of a malfunction or power outage of the electric clutch mechanism 700, the combination wheel assembly 500 can be used for emergency unlocking without a key, thereby improving user convenience. It is understood that the identification module 800 is used to identify and verify whether the identity information entered by the user meets the preset identity information. The identification module 800 can be configured in the form of fingerprint recognition, card swipe recognition, Bluetooth activation, etc., and can be configured according to user needs.

[0034] See also Figure 2 and Figure 5When the lock is in the locked state, the protrusion 310 abuts against the lower slope of the V-shaped groove so that there is a height gap and a horizontal gap between the protrusion 310 and the V-shaped groove. When the combination wheel group 500 is in the unlocked state, the lock beam 200 can move downward slightly to make the two lock tongues 300 move away from each other, so that the second limiting portion 410 is separated from the first limiting portion 320. It is understandable that when the correct password is input into the combination wheel set 500, the shift fork 400 has a tendency to swing to the upper part of the shift fork 400 and leave the space between the two lock tongues 300 under the driving action of the second elastic member 600. However, at this time, the second limit portion 410 abuts against the first limit portion 320 and cannot directly unlock the padlock. The user needs to apply pressure on the lock beam 200 to move the lock beam 200 downward slightly, and the V-shaped groove moves slightly downward relative to the protrusion 310 until the protrusion 310 is aligned with the bottom of the V-shaped groove. Under the action of the first elastic member 330, the protrusions 310 of the two locking tongues 300 move away from each other to insert into the bottom of the V-shaped groove, eliminating the aforementioned height and horizontal gaps. At this point, the first limiting portion 320 and the second limiting portion 410 are misaligned in the left-right direction. The first limiting portion 320 cannot block the second limiting portion 410, allowing the upper portion of the shift fork 400 to swing away from between the two locking tongues 300. When the lock beam 200 rises relative to the lock body 100, the two locking tongues 300 can move closer to each other, unlocking the padlock. This structure prevents strangers from directly opening the padlock by trying to find the correct combination through trial and error, further improving the anti-theft function and a very clever construction.

[0035] It should be noted that when the padlock adopts the first limiting portion 320 and the second limiting portion 410 to improve the anti-theft performance, the electric clutch mechanism 700 also needs to realize the unlocking function accordingly. Figure 5 and Figure 6In some embodiments of the present invention, the electric clutch mechanism 700 includes a motor 710 and a dial 720 provided on the output shaft of the motor 710. The dial 720 is circumferentially provided with a first eccentric portion 721 and a second eccentric portion 722. The distance between the second eccentric portion 722 and the axis of the output shaft of the motor 710 is greater than the distance between the first eccentric portion 721 and the axis of the output shaft of the motor 710. The shift fork 400 can move up and down and swing back and forth relative to the lock body 100. The shift fork 400 has a driving portion 420 that contacts the first eccentric portion 721 or the second eccentric portion 722. The second elastic member 600 includes a tension spring 610 connected between the middle portion of the shift fork 400 and the lock body 100 and a compression spring 620 that drives the shift fork 400 to return downward. The first eccentric portion 721 acts on the driving portion 420 to lift the second limiting portion 410 and the first limiting portion 320 to a vertical position offset. It can be understood that after the identity information input by the user is verified, the motor drives the dial 720 to rotate, and the first eccentric portion 721 first contacts the driving portion 420 to slightly lift the fork 400, and the compression spring 620 is compressed. The second limit portion 410 on the fork 400 and the first limit portion 320 of the lock tongue 300 are misaligned in the height direction. At this time, the upper part of the fork 400 is still in the area between the two lock tongues 300, and then the dial 720 continues to rotate until the second eccentric portion 722 contacts the driving portion 420, and the fork 400 can swing in the direction of stretching the tension spring 610, so that the upper part of the fork 400 can be separated from the area between the two lock tongues 300.

[0036] See also Figure 6In some embodiments of the present invention, the driving portion 420 includes a protrusion protruding toward the dial wheel 720, and the surface of the protrusion is concavely provided with a driving groove 421 for accommodating the first eccentric portion 721, and the upper end of the driving groove 421 is provided with a side stop 422. After the first eccentric portion 721 acts upward on the side stop 422 to lift the second limiting portion 410 and the first limiting portion 320 to be misaligned up and down, the first eccentric portion 721 leaves the driving groove 421 and the side stop 422, and the second eccentric portion 722 can abut against the protrusion to drive the upper part of the shift fork 400 away from between the two lock tongues 300. When the cam 721 is in the unlocked position, the first eccentric portion 721 is pressed against the locking cam 422, and the locking cam 422 is pressed against the locking cam 422, so that the locking cam 422 is in the unlocked position.

[0037] See also Figure 6 In some embodiments of the present invention, a travel switch 900 is provided within the lock body 100, located above the dial wheel 720. The travel switch 900 is electrically connected to the electric clutch mechanism 700. When the second eccentric portion 722 abuts the protrusion, the first eccentric portion 721 triggers the travel switch 900. It is understood that when the electric clutch mechanism 700 is used to unlock the padlock, the first eccentric portion 721 first raises the shift fork 400 to a certain height. Then, the second eccentric portion 722 abuts the protrusion 310, pushing the upper portion of the shift fork 400 out of the area between the two lock tongues 300. Simultaneously, the first eccentric portion 721 triggers the travel switch 900, thereby controlling the motor 710 to pause for a certain period of time. After the lock beam 200 rises to unlock, the motor 710 reverses and resets. The provision of the travel switch 900 prevents the motor 710 from being powered for extended periods of time, reducing the power consumption of the padlock and improving its battery life.

[0038] In some embodiments of the present invention, the locking tongue 300 is away from the reference Figure 5The end surface of the protrusion 310 is formed with a first vertical bar and a second vertical bar spaced apart in the front-to-back direction. The first vertical bar and the second vertical bar define a limiting groove that constitutes the first limiting portion 320. The second limiting portion 410 is a vertical ridge formed on the side wall of the upper end of the shift fork 400 to extend into the limiting groove. The height of the vertical ridge is smaller than the height of the first vertical bar. When the first limiting portion 320 and the second limiting portion 410 of the above structure are used, it is convenient to achieve the second limiting portion 410 being staggered relative to the first limiting portion 320 in the height direction and also in the left-right direction. This simultaneously satisfies the need to improve anti-theft performance when unlocking using both the electric clutch mechanism 700 and the combination wheel assembly 500.

[0039] See also Figures 3 to 5 In some embodiments of the present invention, the password wheel group 500 includes a horizontal shaft 510 horizontally arranged at the lower part of the lock body 100, and a plurality of password gears 520 are passed through the horizontal shaft 510, which rotate around its axial direction. The side of each password gear 520 is provided with an unlocking disk 530 coaxial with it, and a gap space for accommodating the unlocking disk 530 is provided between two adjacent password gears 520. The unlocking disk 530 has an arc surface constituting the locking portion 531 and a flat portion constituting the unlocking portion 532. The lower part of the shift fork 400 is provided with a plurality of push rods 430 corresponding to the unlocking disk 530 one by one, that is, the push rods 430 are located in the gap space. When all the push rods 430 abut against the corresponding flat portions, the second elastic member 600 drives the upper part of the shift fork 400 to leave between the two lock tongues 300. It should be noted that when the password entered by the user is incorrect, at least part of the arc surface abuts against the corresponding push rod 430, the lower part of the fork 400 is pushed out in the direction away from the horizontal axis 510, and the upper part of the fork 400 swings toward the area between the two lock tongues 300. When the password entered by the user is correct, all the planar portions are coplanar, all the push rods 430 abut against their respective corresponding planar portions, and the fork 400 swings under the action of the second elastic member 600 to make the upper part of the fork 400 leave the area between the two lock tongues 300.

[0040] See also Figure 3In some embodiments of the present invention, a slide groove 110 is provided on the upper portion of the lock body 100 for the lock tongue 300 to slide back and forth, a first mounting cavity 120 is provided on the lower portion of the lock body 100 for accommodating the combination wheel set 500, and a second mounting cavity 130 is provided in the middle portion of the lock body 100 for accommodating the electric clutch mechanism 700 and the identification module 800. The second mounting cavity 130 and the first mounting cavity 120 are arranged opposite to each other in the front-to-back direction and are connected by a channel. The output end of the electric clutch mechanism 700 extends from the channel to contact the upper portion of the shift fork 400, and an opening is formed on the side of the slide groove 110 for the upper end of the shift fork 400 to enter and exit, and the lower end of the shift fork 400 is located within the first mounting cavity 120. This structural layout fully utilizes the volume space of the lock body 100 and can accommodate the electric clutch mechanism 700, the combination wheel set 500, the shift fork 400, etc. without changing the size of the lock body 100 of the padlock, resulting in a very simple and compact structure. In this embodiment, the electric clutch mechanism 700 and the battery that powers it are both installed in the second mounting cavity 130. The identification module 800 is located at the opening of the second mounting cavity 130. The lock body 100 also includes a protective cover that surrounds the first and second mounting cavities 120, 130, with the identification module 800 exposed from the protective cover. To charge the battery, a charging port is provided on the side wall of the lock body 100, which is connected to the battery via the charging module.

[0041] See also Figure 5In some embodiments of the present invention, a sleeve 540 is provided in the middle part of the password gear 520 for axial sliding along the transverse shaft 510, and the password gear 520 is provided with a plurality of engagement grooves 521 circumferentially distributed around the axis of the transverse shaft 510, and all the sleeves 540 are installed on the transverse shaft 510 in sequence, and the outer wall of the sleeve 540 is provided with an engagement portion 541 that can be combined with any of the engagement grooves 521, and the unlocking disk 530 is formed on the outside of the sleeve 540, and one end of the transverse shaft 510 is connected to a third elastic member 550 that drives the sleeve 540 to engage with the corresponding password gear 520, and the transverse shaft 510 can drive the sleeve 540 to separate from the corresponding password gear 520 and make the password gear 520 rotate relative to the sleeve 540. When the user wants to reset the password combination, the cross shaft 510 and the sleeve 540 are moved together along the axial direction under the action of the third elastic member 550, and each sleeve 540 can be re-engaged with the password gear 520, thereby realizing the change of the password.

[0042] See also Figure 3 and Figure 5In some embodiments of the present invention, in order to further improve the convenience of changing the password of the password wheel group 500, the lock beam 200 is provided with a plug-in column 220 extending downward at one end of the U-shaped section, and the lock body 100 is provided with a column hole for the plug-in column 220 to be lifted, moved and rotated. A fourth elastic member 910 is provided in the column hole to drive the lock beam 200 to move upward, and the lower end of the plug-in column 220 is provided with a pushing portion 230 that can contact the end of the horizontal axis 510 away from the third elastic member 550. Specifically, when the fork 400 swings to the point where the upper part of the fork 400 leaves the area between the two lock tongues 300, the lock beam 200 can bounce upward under the driving action of the fourth elastic member 910, so that the two lock tongues 300 compress the first elastic member 330 and approach each other, and the lock tongue 300 leaves the locking groove 210. Then the user rotates the lock beam 200 to rotate the other end of the U-shaped section to the outside of the lock body 100. At this time, applying downward pressure on the lock beam 200 can drive the plug-in column 220 to move downward along the column hole until the pushing portion 230 can align with the end of the cross-axis member 510. The pushing portion 230 is used to push the cross-axis member 510 and the sleeve 540 on the cross-axis member 510 toward the compressed third elastic member 550, thereby achieving the purpose of changing the password. In this embodiment, the outer arc wall of the lower end of the plug-in column 220 constitutes the pushing portion 230, and the outer wall of the lower end of the plug-in column 220 has a default plane. The radial dimension between the default plane and the axis of the plug-in column 220 is smaller than the radial dimension between the pushing portion 230 and the axis of the plug-in column 220. When the user rotates the lock beam 200 90° counterclockwise and presses it downward until the default plane contacts the end face of the horizontal axis 510, the user rotates the lock beam 200 90° counterclockwise again to make the pushing portion 230 move the horizontal axis 510 in the direction of compressing the third elastic member 550, and the password gear 520 can be separated from the sleeve 540 to change the password.

[0043] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A padlock, characterized in that: include: Lock body (100); A lock beam (200) is movably provided on the lock body (100), the lock beam (200) having a U-shaped section capable of forming a ring with the lock body (100), and locking grooves (210) are provided on opposite sides of the U-shaped section; Two locking tongues (300) are slidably disposed on the lock body (100) in opposite directions, and the two locking tongues (300) are connected to a first elastic member (330) that drives the two locking tongues (300) to slide in opposite directions to extend toward the locking groove (210); A shift fork (400) is swingably disposed on the lock body (100); A cipher wheel assembly (500) is rotatably mounted on the lock body (100), wherein the cipher wheel assembly (500) comprises an unlocking portion (532) and a locking portion (531) that can contact the lower portion of the shift fork (400); a second elastic member (600) connected to the shift fork (400) and capable of driving the upper portion of the shift fork (400) to swing between the two locking tongues (300) and driving the lower portion of the shift fork (400) to remain against the unlocking portion (532) or the locking portion (531); An electric clutch mechanism (700) is provided in the lock body (100) and is capable of driving the upper portion of the shift fork (400) to leave between the two lock tongues (300); an identification module (800), electrically connected to the electric clutch mechanism (700), and used to control the action of the electric clutch mechanism (700); The locking groove (210) is a horizontally open V-shaped groove, and the end of the lock tongue (300) close to the V-shaped groove is provided with a convex portion (310) corresponding to the V-shaped groove, and the end surface of the lock tongue (300) away from the convex portion (310) is provided with a first limiting portion (320), and the upper part of the shift fork (400) is provided with a second limiting portion (410) capable of abutting against the first limiting portion (320) to prevent the shift fork (400) from leaving between the two lock tongues (300). When the padlock is in a locked state, the convex portion (310) abuts against the downslope surface of the V-shaped groove so that there is a height gap and a horizontal gap between the convex portion (310) and the V-shaped groove. When the password wheel set (500) is in an unlocked state, the lock beam (200) can move downward slightly to make the two lock tongues (300) move away from each other so that the second limiting portion (410) is separated from the first limiting portion (320). The electric clutch mechanism (700) comprises a motor (710) and a thumbwheel (720) provided on the output shaft of the motor (710); the thumbwheel (720) is provided with a first eccentric portion (721) and a second eccentric portion (722) at intervals on its circumference; the distance between the second eccentric portion (722) and the axis of the output shaft of the motor (710) is greater than the distance between the first eccentric portion (721) and the axis of the output shaft of the motor (710); the shift fork (400) can move up and down and forward and backward relative to the lock body (100). The shift fork (400) is provided with a driving portion (420) that contacts the first eccentric portion (721) or the second eccentric portion (722), the second elastic member (600) comprises a tension spring (610) connected between the middle portion of the shift fork (400) and the lock body (100) and a compression spring (620) that drives the shift fork (400) to return downward, and the first eccentric portion (721) acts on the driving portion (420) to lift the second limiting portion (410) and the first limiting portion (320) to be dislocated up and down.

2. A padlock according to claim 1, characterized in that: The driving portion (420) includes a protruding block protruding toward the thumbwheel (720), and a driving groove (421) for accommodating the first eccentric portion (721) is provided on a surface of the protruding block. A side block (422) is provided at the upper end of the driving groove (421). After the first eccentric portion (721) acts upward on the side block (422) to lift the second limiting portion (410) and the first limiting portion (320) to be dislocated up and down, the first eccentric portion (721) leaves the driving groove (421) and the side block (422), and the second eccentric portion (722) can abut against the protruding block to drive the upper portion of the shift fork (400) away from between the two locking tongues (300).

3. A padlock according to claim 2, characterized in that: A travel switch (900) is provided in the lock body (100) and is located above the dial wheel (720). The travel switch (900) is electrically connected to the electric clutch mechanism (700). When the second eccentric portion (722) abuts against the protrusion, the first eccentric portion (721) can trigger the travel switch (900).

4. A padlock according to claim 1, characterized in that: A first vertical bar and a second vertical bar are formed on the end surface of the lock tongue (300) away from the protrusion (310) at intervals along the front-to-back direction, and a limiting groove constituting the first limiting portion (320) is defined between the first vertical bar and the second vertical bar. The second limiting portion (410) is formed on the side wall of the upper end of the shift fork (400) to extend into the vertical convex bar of the limiting groove, and the height dimension of the vertical convex bar is smaller than the height dimension of the first vertical bar.

5. The padlock according to claim 1, characterized in that: The cipher wheel assembly (500) comprises a horizontal shaft (510) arranged horizontally at the lower part of the lock body (100), a plurality of cipher gears (520) rotating around the axial direction thereof are passed through the cipher gear (520), a side portion of each cipher gear (520) is provided with an unlocking disk (530) coaxial therewith, a gap space for accommodating the unlocking disk (530) is provided between two adjacent cipher gears (520), the unlocking disk (530) has an arc surface constituting the locking portion (531) and a flat portion constituting the unlocking portion (532), a plurality of push rods (430) corresponding to the unlocking disk (530) are provided at the lower part of the shift fork (400), and when all the push rods (430) are in contact with the corresponding flat portions, the second elastic member (600) drives the upper part of the shift fork (400) to leave between the two lock tongues (300).

6. A padlock according to claim 5, characterized in that: The upper portion of the lock body (100) is provided with a slide groove (110) for the lock tongue (300) to slide back and forth, the lower portion of the lock body (100) is provided with a first installation cavity (120) for accommodating the password wheel assembly (500), and the middle portion of the lock body (100) is provided with a second installation cavity (130) for accommodating the electric clutch mechanism (700) and the identification module (800), the second installation cavity (130) and the first installation cavity (120) are arranged in opposite directions in a front-to-back direction and are connected through a channel, and the output end of the electric clutch mechanism (700) extends from the channel to contact the shift fork (400).

7. The padlock according to claim 5, characterized in that: A shaft sleeve (540) is provided at the middle portion of the cipher gear (520) so as to slide along the axial direction of the transverse shaft (510), and a plurality of meshing grooves (521) are distributed circumferentially around the axis of the transverse shaft (510) at intervals. All the shaft sleeves (540) are sequentially arranged and mounted on the transverse shaft (510), and an outer wall of the shaft sleeve (540) is provided with a meshing portion (541) capable of being combined with any of the meshing grooves (521). The unlocking disk (530) is formed on the outside of the shaft sleeve (540), and one end of the transverse shaft (510) is connected to a third elastic member (550) for driving the shaft sleeve (540) to mesh with the corresponding cipher gear (520). The transverse shaft (510) can drive the shaft sleeve (540) to separate from the corresponding cipher gear (520) so as to rotate the cipher gear (520) relative to the shaft sleeve (540).

8. A padlock according to claim 7, characterized in that: The lock beam (200) is provided with a plug-in column (220) extending downward from one end of the U-shaped section, and the lock body (100) is provided with a column hole for the plug-in column (220) to be lifted, moved and rotated, and a fourth elastic member (910) is provided in the column hole for driving the lock beam (200) to move upward, and a pushing portion (230) is provided at the lower end of the plug-in column (220) capable of contacting an end of the transverse shaft (510) away from the third elastic member (550).

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