CN219605069U - Electronic lock with waterproof performance - Google Patents

Abstract

The utility model provides an electronic lock with waterproof performance, belongs to the technical field of electronic locks, and solves the technical problems of low waterproof performance and shortened service life, reduced reliability and limited use environment of the electronic lock. This possess waterproof performance's electronic lock includes: a front shell; the rear cover and the front shell are mutually fixed to form a hollow cavity; the middle frame is arranged in the hollow cavity and is provided with a concave part and a circle of first grooves surrounding the concave part; the elastic key board is matched with the first protrusion which comprises a circle of first grooves and is matched with the circle of first grooves in shape, and the first protrusion is elastically clamped and matched with the first grooves. The electronic lock with the waterproof performance has the advantages of good waterproof effect, contribution to prolonging the service life, improvement of reliability and widening of the use environment.

Description

Electronic lock with waterproof performance

Technical Field

The utility model belongs to the technical field of electronic locks, and particularly relates to an electronic lock with waterproof performance.

Background

The electronic lock is different from the traditional mechanical lock and is more intelligent in terms of safety, interactivity and the like. With the application of the microprocessor to the electronic lock, thereby introducing functions such as intelligent management and analysis system, therefore, the electronic lock needs to be internally provided with components such as a battery, a PCB, a motor and the like which cannot be involved, the current electronic lock has various application scenes and is applied outdoors under more conditions, the electronic lock is easier to be in a frost and snow environment, the waterproof performance of the electronic lock serving as an electronic product is crucial for long-term normal operation of the electronic lock, once the components which cannot be involved in the electronic lock are invaded by water and are easy to be short-circuited, the waterproof performance of the current electronic lock is not high, particularly cannot reach the waterproof function of an IP68 level, the service life of the electronic lock is adversely affected, the reliability of the electronic lock is reduced, the electronic lock is damaged due to the short circuit, and the service environment of the electronic lock is limited.

Therefore, there is a need to provide an electronic lock with waterproof performance that has a good waterproof effect, contributes to a prolonged service life, improves reliability, and widens the use environment.

Disclosure of Invention

In view of the above, the present utility model provides an electronic lock with waterproof performance, which is used for solving the technical problems of low waterproof performance, shortened service life, reduced reliability and limited use environment of the existing electronic lock.

The utility model adopts the technical scheme that:

the utility model provides an electronic lock with waterproof performance, which comprises: a front shell; the rear cover and the front shell are mutually fixed to form a hollow cavity; the middle frame is arranged in the hollow cavity and is provided with a concave part and a circle of first grooves surrounding the concave part; the elastic key board is matched with the first protrusion which comprises a circle of first grooves and is matched with the circle of first grooves in shape, and the first protrusion is elastically clamped and matched with the first grooves.

Further, the elastic key board comprises a first board surface and a second board surface which are opposite to each other, the bulges are arranged on the second board surface, a plurality of key bosses are arranged on the first board surface, each key boss is provided with a pressing column facing to one side of the second board surface, and on the direction perpendicular to the second board surface, the first plane of the free end face of each pressing column in a non-pressed state is lower than the second plane of the bulged free end face.

Further, the front shell is provided with a plurality of openings which respectively and correspondingly contain a key boss therein, the surface of the front shell facing the first plate surface of the elastic key plate is provided with a circle of notches, a circle of waterproof ribs are arranged in the notches, the first plate surface of the elastic key plate is provided with a circle of protruding tables, and the protruding tables are elastically clamped in the notches and press against the waterproof ribs.

Further, the electronic lock further comprises a PCB arranged in the concave part, a wire passing hole and a sound outlet hole are formed in the concave surface of the concave part, the sound outlet hole faces a loudspeaker arranged on the PCB, a waterproof sound-transmitting film covering the sound outlet hole is covered on the concave surface, and waterproof glue is filled between the wire passing hole and a cable passing through the wire passing hole.

Further, be equipped with Type-C installing port in the bottom of center, be equipped with on the PCB board with Type-C installing port relative Type-C interface, bottom mounting at the center has a waterproof clamp plate, waterproof clamp plate includes the lug that meets with the periphery of Type-C interface, waterproof clamp plate is equipped with respectively with Type-C installing port and the communicating clamp plate mouth of Type-C interface, the lug surrounds the clamp plate mouth, annotate the waterproof glue in the gap between the periphery of lug and Type-C interface, be fixed with an elastic sealing ring on the center, the terminal surface and the elastic sealing ring looks butt of lug.

Further, the electronic lock further comprises a sealing plug connected with the Type-C interface in a pluggable manner, the sealing plug comprises a cover plate, an anti-loose rod and a plug connector, the anti-loose rod and the plug connector are arranged on one side, facing the Type-C interface, of the cover plate, the anti-loose rod comprises an inserting rod and a pair of protrusions arranged on the periphery of the inserting rod, the inserting rod is gradually reduced towards the direction of the free end, a socket and a pit are formed in the bottom end of the front shell, the inserting rod is inserted into the socket through the free end and penetrates through the socket under elastic extrusion deformation, the plug connector is provided with a concave hole for accommodating the insertion of the Type-C interface, the cover plate can be accommodated in the pit, and a plurality of pairs of water leakage holes which are communicated are formed in the relative positions of the pit and the cover plate.

Further, the battery compartment for accommodating the battery is further arranged on one side, opposite to the concave part, of the middle frame, the battery compartment comprises a plurality of compartment walls which are connected in sequence, a circle of second grooves concavely formed in the compartment walls are formed in the top end surface of the battery compartment, the electronic lock further comprises a compartment pad and a compartment cover, the compartment pad is provided with a circle of second bosses which are elastically clamped and matched with the second grooves, the compartment cover is arranged above the compartment pad, the compartment pad and the compartment cover are provided with a plurality of pairs of communicated fixing holes, a plurality of protruding columns with blind holes are arranged on the outer side of the compartment wall, the blind holes are respectively opposite to the fixing holes, nuts are arranged in the blind holes, and a plurality of screws are respectively and fixedly connected with the nuts.

Furthermore, one side of the bin cover facing the bin pad is provided with more than two circles of elastic sealing ribs adjacent to the outer side surface at equal intervals, the outer sides of three different bin walls are respectively provided with a convex column, and the projection connecting lines of a plurality of screws on a common vertical plane form an acute triangle.

Further, the electronic lock further comprises a driving motor and a motor waterproof shell, wherein the motor waterproof shell is provided with an output hole and an input hole, an output shaft of the driving motor is exposed through the output hole, a sealing retainer ring is arranged between the opening and the output shaft, a motor wire of the driving motor is connected with the outside through the input hole, and waterproof glue is filled in a part, which is contacted with the motor waterproof shell, of the motor wire to be fixed and waterproof.

Further, the electronic lock further comprises a lock hook, the lock hook comprises a long supporting leg, a short supporting leg and an arc connecting body, the long supporting leg and the short supporting leg are parallel to each other, the arc connecting body is connected between the long supporting leg and the short supporting leg, a first through hole and a second through hole which are respectively used for the long supporting leg and the short supporting leg to do moving in and out are formed in the front shell, an O-shaped groove is respectively formed in the first through hole and the second through hole, and O-shaped sealing rings which are respectively sleeved on the peripheries of the long supporting leg and the short supporting leg are respectively distributed in the O-shaped grooves.

In summary, the beneficial effects of the utility model are as follows:

according to the electronic lock with the waterproof performance, the first bulge of the elastic key board is matched with the first groove of the middle frame in an elastic clamping mode, so that excellent waterproof sealing can be achieved for the internal structure of the electronic lock including the hollow cavity, electronic components in the internal structure are prevented from being invaded by water, and therefore the electronic lock with the waterproof performance is beneficial to prolonging the service life, improving the reliability and widening the service environment.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings required to be used in the embodiments of the present utility model will be briefly described, and it is within the scope of the present utility model to obtain other drawings according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an electronic lock according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an electronic lock according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an electronic lock corresponding to FIG. 1 with front and rear covers hidden;

FIG. 4 is a schematic view of the electronic lock of FIG. 3 with the sealing plug hidden from view at a different angle;

FIG. 5 is a schematic diagram of a middle frame of an electronic lock according to an embodiment of the present utility model in a view angle;

FIG. 6 is a schematic diagram of a middle frame of an electronic lock according to an embodiment of the present utility model in another view angle;

FIG. 7 is a schematic view of an elastic key pad of an electronic lock according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of an elastic key pad of an electronic lock according to an embodiment of the present utility model in another view angle;

FIG. 9 is a schematic view of the front casing of the electronic lock according to the embodiment of the present utility model in a view angle;

FIG. 10 is a schematic view of the front housing of the electronic lock according to the embodiment of the present utility model in another view angle;

FIG. 11 is a schematic view of an electronic lock with a front shell hidden and a bottom view of a middle frame;

fig. 12 is a schematic structural view of a waterproof board of an electronic lock according to an embodiment of the present utility model;

fig. 13 is a schematic structural view of a sealing plug of an electronic lock according to an embodiment of the present utility model;

FIG. 14 is a schematic view of the structure of a pad of an electronic lock according to an embodiment of the present utility model;

FIG. 15 is a schematic view of the structure of the cover of the electronic lock according to the embodiment of the utility model;

fig. 16 is a schematic structural view of a waterproof motor case and a driving motor therein of the electronic lock according to the embodiment of the present utility model;

parts and numbers in the figures:

1. a front shell; 11. opening holes; 12. a notch; 13. waterproof ribs; 14. a socket; 15. pit; 16. a first through hole; 17. a second through hole; 18. an O-shaped groove; 2. a rear cover; 3. a middle frame; 31. a recessed portion; 32. a first groove; 33. a wire through hole; 34. a sound outlet hole; 35. Type-C mounting port; 36. a battery compartment; 37. a bin wall; 38. a second groove; 39. a convex column; 4. an elastic key sheet; 41. a first protrusion; 411. a wave trough; 412. convex arc grooves; 413. a protruding moment groove; 42. a key boss; 43. pressing the column; 44. a boss; 5. Type-C interface; 6. a waterproof pressure plate; 61. a bump; 62. a pressing plate opening; 63. a connection hole; 7. an elastic sealing ring; 8. sealing the plugs; 81. a cover plate; 82. an anti-drop active rod; 821. a rod; 822. a protrusion; 83. a plug; 831. concave holes; 9. a water leakage hole; 10. a bin pad; 101. a second boss; 1A, a bin cover; 1A1, elastic sealing ribs; 1B, fixing holes; 1C, a screw cap; 1D, a screw; 1E1, an output shaft; 1E2, motor wires; 1F, a motor waterproof shell; 1G, locking hook; 1G1, long support legs; 1G2, short legs; 1G3, arc connector; a 1H, O seal ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element. If not conflicting, the embodiments of the present utility model and the features of the embodiments may be combined with each other, which are all within the protection scope of the present utility model.

Referring to fig. 1 to 16, as an object of the present utility model, there is provided an electronic lock having waterproof performance, which includes a front case 1, a rear cover 2, a center 3, and an elastic key sheet 4, wherein the rear cover 2 and the front case 1 are fixed to each other to form a hollow cavity. The middle frame 3 is disposed in the hollow cavity, and the middle frame 3 is provided with a recess 31 and a circle of first grooves 32 surrounding the recess 31. The elastic key sheet 4 is made of an elastic material such as rubber or silica gel and is used for receiving a finger to elastically deform and act on a corresponding button on a PCB board (not shown in the figures and described further below), and the elastic key sheet 4 is matched with the shape of the concave portion 31 and comprises a circle of first protrusions 41 matched with the shape of the circle of first grooves 32, the first protrusions 41 are elastically clamped and matched with the first grooves 32, the first protrusions 41 can be provided with a lip shape to enhance the fixing effect of interference fit with the first grooves 32, therefore, by adopting the elastic clamped and matched with the first protrusions 41 of the elastic key sheet 4 and the first grooves 32 of the middle frame 3, excellent waterproof sealing can be realized for the hollow cavity, and the hollow cavity is positioned in the middle of the electronic lock and directly or indirectly connected with a plurality of electronic components including a battery, the PCB board and a driving motor, therefore, the hollow cavity with strong waterproof function can be prevented from being invaded by water to cause short circuit for the electronic lock, thereby being beneficial to prolonging the service life, improving the reliability and widening the service environment.

Referring to fig. 5 to 8 in combination, in one embodiment, the elastic key board 4 includes a first board surface and a second board surface opposite to each other, the protrusions are disposed on the second board surface, the first board surface is provided with a plurality of key bosses 42, a pressing post 43 is disposed on a side of each key boss 42 facing the second board surface, and in a direction perpendicular to the second board surface, a first plane where a free end surface of each pressing post 43 in an unpressed state is located is lower than a second plane where a free end surface of the protrusion is located. In this way, each of the pressing posts 43 has an elastic movable space in a direction perpendicular to the second plate surface, thereby achieving high operation comfort when the user presses each of the key bosses 42 while ensuring excellent waterproof sealing performance.

Referring to fig. 7 to 10 in combination, in one embodiment, the front case 1 is provided with a plurality of openings 11 respectively corresponding to and accommodating one key boss 42 therein, and it is known that a rigid key case with different numbers or symbols covering one key boss 42 is correspondingly disposed in each opening 11, so as to improve the pressing feel of the user and better transmit the pressing force. The surface of the front shell 1 facing the first plate surface of the elastic key plate 4 is provided with a circle of notch 12, a circle of waterproof ribs 13 are arranged in the notch 12, the first plate surface of the elastic key plate 4 is provided with a circle of protruding tables 44, and the protruding tables 44 are elastically clamped in the notch 12 and abut against the waterproof ribs 13. Therefore, the protrusion 44 is engaged with the recess 12, and a waterproof adhesive (not shown) is provided therebetween, so that the waterproof performance of the electronic lock is further improved, and external water drops are further prevented from entering the inner side of the elastic key sheet 4, i.e., the first plate surface, from the outer side of the elastic key sheet 4, i.e., the second plate surface, and then entering the hollow cavity.

Referring further to fig. 8 in combination, in one embodiment, the first groove 32 includes a pair of opposing wave slots 411, a pair of opposing arc slots 412 and a moment slot 413, such that by providing the plurality of different portions of the first groove 32 with different slots, different portions of the first boss can be elastically deformed to more securely interference fit with the first groove 32.

Referring to fig. 3, 5 and 16, in one embodiment, the electronic lock further includes a PCB board disposed in the recess 31, a wire passing hole 33 and a sound emitting hole 34 are formed on a recess surface of the recess 31, the sound emitting hole 34 faces a speaker disposed on the PCB board, a waterproof sound-permeable membrane (not shown) covering the sound emitting hole 34 is covered on the recess surface, a waterproof glue is filled between the wire passing hole 33 and a cable passing therebetween, the cable may be a motor wire 1E2 of a driving motor for transmitting current and driving signals, and two ends of the motor wire 1E2 are connected to the PCB board and the driving motor, respectively. Therefore, while reliable electrical connection and normal sound output are realized, water drops are prevented from accidentally flowing in through the wire through holes 33 and/or the sound output holes 34, so that the waterproof sealing performance of the electronic lock is further improved.

Referring to fig. 11 and 12 in combination, in one embodiment, a Type-C mounting opening 35 is provided at the bottom end of the middle frame 3, a Type-C interface 5 opposite to the Type-C mounting opening 35 is provided on the pcb board, a waterproof board 6 is fixed at the bottom end of the middle frame 3, and the waterproof board 6 may be provided with two connecting holes 63 and be respectively connected with two threaded holes on the middle frame 3 through two screws 1D via two symmetrically arranged connecting holes 63. The waterproof board 6 includes the lug 61 that meets with the periphery of Type-C interface 5, and waterproof board 6 is equipped with respectively with Type-C mounting port 35 and the communicating clamp plate mouth 62 of Type-C interface 5, lug 61 around clamp plate mouth 62, annotates in the gap between lug 61 and the periphery of Type-C interface 5 has waterproof glue, and waterproof glue can adopt the syringe-like injecting glue machine to carry out the injection, is fixed with an elastic sealing ring 7 on middle frame 3, the terminal surface and the elastic sealing ring 7 looks butt of lug 61. Because the Type-C interface 5 needs to be arranged in an installation port, the Type-C interface 5 is generally waterproof and weak, and therefore the waterproof function of the Type-C interface 5 can be enhanced by fixing the waterproof pressing plate 6 at the Type-C interface 5.

Referring to fig. 9 and 13 in combination, in one embodiment, the electronic lock further includes a sealing plug 8 connected to the Type-C interface 5 in a pluggable manner, the sealing plug 8 is made of a silicone material, the sealing plug 8 includes a cover 81, and an anti-release rod 82 and a plug 83 disposed on a side of the cover 81 facing the Type-C interface 5, the anti-release rod 82 includes a plug 821 and a pair of protrusions 822 disposed on an outer periphery of the plug 821, the plug 821 tapers toward a free end direction, a socket 14 and a pit 15 are disposed at a bottom end of the front case 1, the plug 821 is plugged into the socket 14 by the free end and the protrusions 822 pass through the socket 14 under elastic extrusion deformation, so that the sealing plug 8 cannot be separated from the front case 1, the plug 83 is provided with a concave hole 831 for accommodating insertion of the Type-C interface 5, that is, the cover 81 of the sealing plug 8 can be accommodated in the pit 15, that is, when the Type-C interface 5 is not plugged, the cover 81 is attached to the concave hole 15 and the plug 83 is attached to the Type-C interface 5, thereby preventing water drops from entering the interior of the front case 1 from the electronic lock from increasing in time, and water from entering the interior of the socket 9 due to a small amount of water leakage hole 9 is prevented, and even if water is not accidentally accumulated in the interior of the front case 9 is relatively large.

Referring to fig. 6, 14 and 15, in one embodiment, a battery compartment 36 for accommodating a battery is further disposed on a side of the middle frame 3 opposite to the recess 31, the battery compartment 36 includes a plurality of compartment walls 37 connected in sequence, a circle of second grooves 38 concavely disposed in the compartment walls 37 is disposed on a top surface of the battery compartment 36, the electronic lock further includes a compartment pad 10 and a compartment cover 1A, the compartment pad 10 is made of a silica gel material, the compartment cover 1A is made of a plastic material, the compartment pad 10 is provided with a circle of second bosses 101 elastically engaged with the second grooves 38, the compartment cover 1A is disposed above the compartment pad 10, the compartment pad 10 and the compartment cover 1A are provided with a plurality of pairs of communicating fixing holes 1B, a plurality of protruding columns 39 having blind holes are disposed on an outer side of the compartment walls 37, each blind hole is respectively opposite to each pair of the fixing holes 1B, a nut 1C is disposed therein, the nut 1C is specifically made of a copper nut 1C, and the plurality of screws 1D are respectively fixedly connected to the plurality of nuts 1C. Therefore, the second boss 101 of the bin pad 10 is elastically clamped with the second groove 38 of the battery bin 36 in an interference fit manner, so that an excellent waterproof function of the battery bin 36 is brought, and the bin cover 1A applies a fixing acting force to the bin pad 10 to further enhance the sealing connection between the second boss 101 and the second groove 38, prevent water drops from entering the battery bin 36, ensure that the battery can work normally, and reduce the risk of damage of the electronic lock due to short circuit of the battery.

In one embodiment, more than two circles of elastic sealing ribs 1A1 adjacent to the outer side surface are arranged on one side of the bin cover 1A facing the bin pad 10, so that when the bin cover 1A is pressed against the bin pad 10 to be fixed, the two circles of elastic sealing ribs 1A1 are elastically extruded and deformed to improve the sealing performance between the bin cover 1A and the bin pad 10 and the stability of connection fixation of the bin cover 1A and the bin pad 10, in addition, a convex column 39 can be respectively arranged on the outer sides of three different bin walls 37, and projected connecting lines of a plurality of screws 1D on a common vertical plane form an acute triangle, so that the bin cover 1A can apply relatively uniform acting force on the elastic sealing ribs 1A1 and the second boss 101, and the sealing performance between the bin cover 1A and the bin pad 10 and the battery bin 36 is improved.

Referring to fig. 3 and 16 in combination, in one embodiment, the electronic lock further includes a driving motor (not shown) and a motor waterproof case 1F, the motor waterproof case 1F may be made of stainless steel, when the electronic lock is an electronic padlock, the driving motor may drive the lock cylinder to be locked and unlocked with the shackle 1G, the motor waterproof case 1F is provided with an output hole and an input hole, an output shaft 1E1 of the driving motor is exposed through the output hole, a sealing collar (not shown) is provided between the opening 11 and the output shaft 1E1, a motor wire 1E2 of the driving motor is connected to the outside through the input hole, and a portion of the motor wire 1E2 in contact with the motor waterproof case 1F is filled with glue to be fixed and waterproof, so that the driving motor can operate in a sealing space even if the periphery of the motor waterproof case 1F is immersed in water, the driving motor can stably operate for a long time in a periphery water-filled environment.

Referring to fig. 3 in combination, in an embodiment, the electronic lock further includes a shackle 1G, that is, as one of the electronic locks, the electronic lock of this embodiment is an electronic padlock, the shackle 1G includes long leg 1G1 and short leg 1G2 parallel to each other and an arc connector 1G3 connected between the long leg 1G1 and the short leg 1G2, a first through hole 16 and a second through hole 17 for moving the long leg 1G1 and the short leg 1G2 in and out relative to the outside are provided on the front case 1, an O-shaped groove 18 is provided in the first through hole 16 and the second through hole 17, respectively, and an O-shaped seal ring 1H is provided in each O-shaped groove 18 and is respectively sleeved on the outer circumferences of the long leg 1G1 and the short leg 1G 2. Since the latch hook 1G is a movable member, by disposing the O-ring seal 1H between the latch hook 1G and the front case 1, the waterproof function of preventing water droplets from entering the inside of the front case 1 from the latch hook 1G can be improved.

In summary, the embodiments and the combination of the electronic lock of the present utility model seal the whole lock from multiple directions and multiple angles, so that the electronic lock of the present utility model has good waterproof effect, can prolong the service life, and improve the reliability and widen the service environment.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. Electronic lock with waterproof performance, its characterized in that includes:

a front shell;

the rear cover and the front shell are mutually fixed to form a hollow cavity;

the middle frame is arranged in the hollow cavity and is provided with a concave part and a circle of first grooves surrounding the concave part;

the elastic key board comprises a circle of first bulges which are matched with the shape of the circle of first grooves, and the first bulges are elastically clamped and matched with the first grooves.

2. The electronic lock according to claim 1, wherein the elastic key board comprises a first board surface and a second board surface which are opposite, the protrusions are arranged on the second board surface, the first board surface is provided with a plurality of key bosses, one side of each key boss, which faces the second board surface, is provided with a pressing column, and in the direction perpendicular to the second board surface, the first plane of the free end face of each pressing column in the non-pressed state is lower than the second plane of the free end face of each protrusion.

3. The electronic lock according to claim 2, wherein the front case is provided with a plurality of openings for respectively accommodating one of the key bosses therein, a circle of notches are formed in a surface of the front case facing the first plate surface of the elastic key plate, a circle of waterproof ribs are arranged in the notches, a circle of protruding tables are arranged on the first plate surface of the elastic key plate, and the protruding tables are elastically clamped in the notches and abut against the waterproof ribs.

4. The electronic lock of claim 1, further comprising a PCB board disposed in the recess, wherein a wire through hole and a sound outlet hole are formed in a recess surface of the recess, the sound outlet Kong Miandui is provided with a speaker on the PCB board, and a waterproof sound-permeable film covering the sound outlet hole is covered on the recess surface, and waterproof glue is filled between the wire through hole and a cable passing therebetween.

5. The electronic lock according to claim 4, wherein a Type-C mounting opening is formed in the bottom end of the middle frame, a Type-C interface opposite to the Type-C mounting opening is formed in the PCB board, a waterproof board is fixed to the bottom end of the middle frame, the waterproof board includes a bump connected to the periphery of the Type-C interface, the waterproof board is provided with a board opening which is respectively connected to the Type-C mounting opening and the Type-C interface, the bump surrounds the board opening, waterproof glue is injected into a gap between the bump and the periphery of the Type-C interface, an elastic sealing ring is fixed to the middle frame, and an end face of the bump is abutted to the elastic sealing ring.

6. The electronic lock according to claim 5, further comprising a sealing plug connected to the Type-C interface in a pluggable manner, wherein the sealing plug comprises a cover plate, an anti-disengagement lever and a plug connector, the anti-disengagement lever and the plug connector are arranged on one side of the cover plate facing the Type-C interface, the anti-disengagement lever comprises a plug rod and a pair of protrusions arranged on the periphery of the plug rod, the plug rod is tapered towards a free end direction, a socket and a pit are arranged at the bottom end of the front shell, the plug rod is plugged into the socket through the free end, the protrusions penetrate through the socket under elastic extrusion deformation, the plug connector is provided with a concave hole for accommodating insertion of the Type-C interface, the cover plate can be accommodated in the concave hole, and a plurality of pairs of water leakage holes which are communicated are arranged at the positions opposite to the pit and the cover plate.

7. The electronic lock according to claim 1, wherein a battery compartment for accommodating a battery is further provided on a side of the middle frame opposite to the recess, the battery compartment includes a plurality of compartment walls connected in sequence, a circle of second grooves concavely provided in each compartment wall is provided on a top end surface of the battery compartment, the electronic lock further includes a compartment pad and a compartment cover, the compartment pad is provided with a circle of second bosses elastically engaged with the second grooves, the compartment cover is provided above the compartment pad, the compartment pad and the compartment cover are provided with a plurality of pairs of communicating fixing holes, a plurality of protruding columns having blind holes are provided on an outer side of the compartment walls, each blind hole is respectively opposite to each pair of fixing holes, nuts are disposed therein, and a plurality of screws are respectively fixedly connected with the plurality of nuts.

8. The electronic lock according to claim 7, wherein one side of the bin cover facing the bin pad is provided with more than two circles of elastic sealing ribs adjacent to the outer side surface at equal intervals, the outer sides of three different bin walls are respectively provided with one convex column, and the projection connecting lines of the plurality of screws on a common vertical plane form an acute triangle.

9. The electronic lock according to claim 3, further comprising a driving motor and a motor waterproof case, wherein the motor waterproof case is provided with an output hole and an input hole, an output shaft of the driving motor is exposed through the output hole, a sealing retainer ring is arranged between the opening and the output shaft, a motor wire of the driving motor is connected with the outside through the input hole, and a portion of the motor wire in contact with the motor waterproof case is filled with waterproof glue to be fixed and waterproof.

10. The electronic lock of claim 1, further comprising a latch hook, wherein the latch hook comprises a long leg and a short leg parallel to each other and an arc connecting body connected between the long leg and the short leg, a first through hole and a second through hole for moving the long leg and the short leg in and out respectively are formed in the front shell, an O-shaped groove is formed in the first through hole and the second through hole respectively, and an O-shaped sealing ring sleeved on the peripheries of the long leg and the short leg respectively is arranged in each O-shaped groove.