CN219163819U

CN219163819U - Electronic lock

Info

Publication number: CN219163819U
Application number: CN202223508463.8U
Authority: CN
Inventors: 王超
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-09
Anticipated expiration: 2032-12-28

Abstract

Disclosed herein is an electronic lock including: a driving device including an output shaft outputting torque; the speed reduction device comprises an annular fixed gear ring, a gear is arranged on the inner periphery of the fixed gear ring, the gear is meshed with a multistage planetary gear assembly, and the multistage planetary gear assembly comprises a primary planetary gear assembly, a final planetary gear assembly and at least one middle planetary gear assembly; each stage of the planetary gear assembly comprises a planet carrier, a sun gear and a plurality of planet gears; the output shaft is coaxially connected with a sun gear of the primary planetary gear assembly; the rod piece is connected with the planet carrier of the final planetary gear assembly; the first thread on the rod piece is meshed with the second thread of the lock rod so as to drive the lock rod to reciprocate. The speed reducer composed of the planetary gear components of the electronic lock has small transmission structure size, compact structure, stable motion, larger transmission bearing capacity and high transmission efficiency.

Description

Electronic lock

Technical Field

The utility model relates to the technical field of automobile charging, in particular to an electronic lock.

Background

The charging interface of the new energy automobile is usually provided with a locking device to play a role in fixing the charging gun in the charging process. However, the driving device in the traditional electronic lock greatly consumes electric energy and motor moment due to mutual transmission among transmission mechanisms and friction force generated by changing circular motion into linear motion, which not only leads to too short service life of the electronic lock and easy noise generation, but also easily causes abrasion of a motor gear set and unstable driving device of the electronic lock. And the gear transmission mechanism mainly adopts a fixed-axis gear train for transmission, has the advantages of complex structure, excessive parts, complex assembly steps, high requirement on installation precision and low efficiency of the whole assembly process, and meanwhile, the existing electronic lock and lock rod connecting structure is complex. Accordingly, there is a need to provide a new solution to the above-mentioned problems with electronic locks.

Disclosure of Invention

An object of the present utility model is to provide an electronic lock capable of being assembled in a small space while having a stable structure and a high ejection force.

An electronic lock, comprising:

a driving device including an output shaft outputting torque;

the speed reducer comprises an annular fixed gear ring, a gear is arranged on the inner periphery of the fixed gear ring, and a multistage planetary gear assembly meshed with the gear;

the multi-stage planetary gear assembly includes a primary planetary gear assembly, a final planetary gear assembly, and at least one intermediate planetary gear assembly connected to the primary planetary gear assembly and the final planetary gear assembly, respectively;

each stage of the planetary gear assembly comprises a planet carrier, a sun gear and a plurality of planet gears, wherein the sun gear and the planet gears are arranged on the planet carrier; the output shaft is coaxially connected with a sun gear of the primary planetary gear assembly;

a lever coupled to a planet carrier of the final planetary gear assembly, the lever having a first thread;

the lock rod is provided with a second thread matched with the first thread;

the driving device drives the rod piece to rotate through the speed reducing device, and then drives the lock rod to reciprocate.

Therefore, the multistage planetary gear assembly is arranged to realize multistage deceleration, and the multistage planetary gear assembly has the advantages of small transmission structure size, compact structure, stable motion, large transmission capacity and high transmission efficiency. Meanwhile, the lock rod is moved through the engagement of the first thread and the second thread with simple structures.

Preferably, the direction of the reciprocating motion is parallel to the axial direction of the output shaft.

By setting the direction of the reciprocating motion parallel to the axial direction of the output shaft, thereby avoiding loss of output force.

Preferably, the lock rod has a small diameter portion and a large diameter portion, the large diameter portion has a receiving cavity, the second thread is an internal thread provided at an inner periphery of the receiving cavity, and the first thread is an external thread provided at an outer periphery of the rod.

Therefore, the lock rod is set to have a hollow cavity, the running space of the rod piece is determined, and the lock rod is separated from the locking position.

Preferably, the internal thread is a double-line internal thread, and the external thread is a double-line external thread.

Therefore, the double-thread has larger thread lead angle, smaller friction force formed by screwing the screw and the nut, is convenient for transmitting power and motion, and designs the internal thread and the external thread into the double-thread.

Preferably, the axis of rotation of the lever coincides with the axis of rotation of the planetary gear assembly.

By designing the rotational axis of the lever to coincide with the rotational axis of the planetary gear assembly, thereby avoiding loss of output force.

Preferably, the length of the double-wire external thread is greater than or equal to the preset movable distance of the lock rod and less than or equal to the length of the accommodating cavity.

Therefore, the length of the double-line external thread is set, and the condition that the lock rod can reach the preset moving distance is achieved.

Preferably, the length of the double-wire internal thread is not greater than the length of the double-wire external thread.

Therefore, the length of the double-line internal thread is set, so that the length of the double-line internal thread and the length of the double-line external thread can be ensured, and the threaded engagement can be satisfied.

Preferably, a plurality of the planetary gears of the planetary gear assembly of each stage are respectively meshed with the gears, the sun gear is respectively meshed with the plurality of the planetary gears, and the planet carrier is connected with the plurality of the planetary gears.

Therefore, a plurality of planetary gears meshed with the planetary gears are arranged around the sun gear, and the planetary gears revolve through self-rotation, so that the planetary gear assembly achieves the effect of reducing speed.

Preferably, the driving device drives the sun gear of the primary planetary gear assembly to rotate and drives the planet carrier to rotate through a plurality of planet gears, the planet carrier of the primary planetary gear assembly is coaxially connected with the sun gear of the intermediate planetary gear assembly, and drives the intermediate planetary gear assembly to rotate and drives the final planetary gear assembly to rotate through the planet carrier of the intermediate planetary gear assembly.

Thus, the manner of transmission of the multi-stage planetary gear assembly is determined.

Preferably, the sun gear of each of the remaining stages of the planetary gear assemblies, except for the primary planetary gear assembly, is connected to the planet carrier of the adjacent previous stage of the planetary gear assembly, respectively.

Thus, by setting the specific structure of the planet carrier, the planet carrier is used as the output body of the planetary gear assembly of the present stage and as the input body of the planetary gear assembly of the next stage, thereby realizing the series connection of the multi-stage planetary gear assemblies.

Preferably, the output power of the driving device is 1W to 75W.

Thus, by calculating the output power, a sufficient output torque can be ensured in this section.

Preferably, the transmission ratio of the driving device to the rod piece is 3/1-72/1.

Thus, the transmission ratio can meet the output speed requirement in this section by calculation.

The utility model has the following beneficial effects:

1. according to the electronic lock, the multistage planetary gear assembly is arranged, the sun gear is arranged to be in active transmission, and the plurality of planetary gears meshed with the sun gear are arranged around the sun gear, so that the effect of reducing speed is achieved; the transmission structure has small volume, compact structure, stable motion, larger transmission ratio, large bearing capacity and high transmission efficiency.

2. The electronic lock drives the lock rod to reciprocate by screwing in and unscrewing out the rod piece and the lock rod, so that the connection relation of the lock rod is simplified, and the electronic lock is convenient to replace and maintain.

3. According to the electronic lock, the sun gear is set to be in active transmission, and the plurality of planetary gears meshed with the sun gear are arranged around the sun gear, so that the effect of reducing speed is achieved.

4. The electronic lock of the utility model enables the planet carrier to be used as an output body of the planetary gear assembly of the present stage and as an input body of the planetary gear assembly of the next stage by setting the specific structure of the planet carrier, and realizes the serial connection of the multi-stage planetary gear assemblies.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a schematic cross-sectional view of an electronic lock according to the present utility model;

FIG. 2 is a schematic diagram of the operation of the planetary gear assembly of the electronic lock of the present utility model;

FIG. 3 is a schematic view of the assembly of the planet carrier and lever of the electronic lock of the present utility model;

FIG. 4 is a schematic view of the structure of the lock lever of the electronic lock of the present utility model;

the figures are marked as follows:

1-drive, 2-reduction, 21-stationary ring gear, 22-planetary gear assembly, 22 a-primary planetary gear assembly, 22 b-primary planetary gear assembly, 22 c-primary planetary gear assembly,

23-gear, 221-planet carrier, 222-sun gear, 223-planet gear, 224-carrier body,

225-fixed shaft, 226-transmission shaft, 3-rod, 31-first screw thread, 4-lock rod, 41-small diameter

Part, 42-large diameter part, 43-accommodation cavity, 44-second screw thread.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

As shown in fig. 1 and 2, an electronic lock includes:

a drive device 1, the drive device 1 including an output shaft outputting torque;

a reduction gear 2 including a ring-shaped fixed ring gear 21 having a gear 23 provided at an inner periphery thereof, and a multistage planetary gear assembly 22 meshed with the gear;

the multi-stage planetary gear assembly 22 includes a primary planetary gear assembly 22a, a final planetary gear assembly 22c, and at least one intermediate planetary gear assembly 22b connected to the primary and final planetary gear assemblies, respectively;

each stage of the planetary gear assembly comprises a planet carrier 221, a sun gear 222 and a plurality of planet gears 223 arranged on the planet carrier; the output shaft is coaxially coupled to the sun gear 222 of the primary planetary gear assembly 22 a;

a lever 3, said lever 3 being connected to a planet carrier 221 of said final planetary gear assembly 22c, said lever 3 having a first thread 31;

a lock rod 4, wherein a second thread 44 matched with the first thread 31 is arranged on the lock rod 4;

the driving device 1 drives the rod piece 3 to rotate through the speed reducing device 2, and then drives the lock rod 4 to reciprocate.

The reduction gear 2 includes a fixed ring gear 21, a gear 23 is provided inside the fixed ring gear 21, and a multistage planetary gear assembly 22 is provided inside the fixed ring gear 21.

The planetary gear assembly connected to the output shaft of the multi-stage planetary gear assembly 22 is defined as a primary planetary gear assembly 22a, the planetary gear assembly connected to the lever 3 is defined as a final planetary gear assembly 22c, the planetary gear assembly intermediate between the primary planetary gear assembly 22a and the final planetary gear assembly 22c is an intermediate planetary gear assembly 22b, and the number of intermediate planetary gear assemblies 22b is at least 1.

In the present embodiment, the multi-stage planetary gear assembly 22 is a 3-stage planetary gear assembly, i.e., the number of intermediate planetary gear assemblies 22b is 1. Thereby, at least 3-stage deceleration is possible.

Specifically, each stage of planetary gear assembly includes a planet carrier 221, a sun gear 222, and a plurality of planet gears 223.

The principle of deceleration of the deceleration device 2 is: the annular gear ring 21 is fixedly arranged, the sun gear 222 is active, and the planet carrier 221 is passive, so that an output shaft of the driving device 1 is connected with the sun gear 222 of the primary planetary gear assembly 22a, the rod 3 is connected with the planet carrier 221 of the final planetary gear assembly 22c, the driving device 1 drives the rod 3 to rotate through the speed reducing device 2, and a first thread of the rod 3 is meshed with a second thread 44 of the lock rod 4 so as to drive the lock rod 4 to reciprocate.

Thus, by setting the sun gear 222 as active transmission, the plurality of planet gears 223 are respectively meshed with the sun gear 222 and the gears 23, so that the planet gears 223 rotate and revolve, and the planetary gear assembly 22 of the planet gears achieves the function of reducing speed; the transmission structure has small volume, compact structure, stable motion, large transmission ratio, large bearing capacity and high transmission efficiency.

In the present embodiment, the driving device 1 is a motor.

In another embodiment, the drive device 1 is a hydraulic motor.

Specifically, the lever 3 is rotated by the planetary gear assembly 22, and in order to avoid the loss of the output force, the movement direction of the lever 3 to drive the lock lever 4 is designed to be parallel to the axis direction of the output shaft.

As shown in fig. 4, the lock lever 4 has a small diameter portion 42 and a large diameter portion 41, the large diameter portion 41 has a receiving chamber 43, the second screw 44 is an internal screw provided on an inner periphery of the receiving chamber 43, and the first screw 31 is an external screw provided on an outer periphery of the rod 3.

In some embodiments, the lock lever 4 is divided into two parts, one part for the small diameter portion 42 of the lock and unlock, and the other part for the large diameter portion 41 of the second screw thread.

In this embodiment, the large diameter portion 41 has a receiving cavity 43, a second thread 44 is provided on the inner periphery of the receiving cavity 43, the second thread is an internal thread, and an external thread engaged with the rod 3 is provided thereon.

Therefore, the running space of the rod piece 3 is determined by setting the accommodating cavity of the lock rod 4, and the reciprocating motion of the lock rod 4 is realized by the engagement of multiple threads of internal and external threads.

In the embodiment, the double-thread is utilized, the thread lead angle is larger, the friction force formed by screwing the screw and the nut is smaller, the power and the motion are convenient to transmit, and the internal thread and the external thread are designed into the double-thread.

As shown in fig. 1, the axis of rotation of the lever 3 coincides with the axis of rotation of the planetary gear assembly 22.

In some embodiments the axis of rotation of the lever 3 may be set in any direction, but in this embodiment the axis of rotation of the lever 3 is designed to coincide with the axis of rotation of the planetary gear assembly 22 in order to avoid loss of output force.

Preferably, the length of the double-wire external thread is greater than or equal to the preset movable distance of the lock lever 4 and less than or equal to the length of the accommodating cavity 43.

Specifically, the length of the double-line external thread of the rod 3 is determined by presetting the moving distance of the rod 4, the length of the double-line external thread is greater than or equal to the preset moving distance of the rod 4, and meanwhile, the length of the double-line external thread is smaller than or equal to the length of the accommodating cavity 43 of the rod 4, and the preset moving distance can be met only if the two length limitations are met, and the rod 3 drives the rod 4 to move.

In this embodiment, the rod 3 is a two-wire screw.

In another embodiment, the rod 3 is a round rod, and a double-line external thread meeting the length is arranged at one end of the round rod.

Specifically, the length of the double-wire internal thread is only required to match the length of the double-wire external thread to satisfy the moving distance of the lock lever 4, and in this embodiment, the length of the double-wire internal thread is smaller than or equal to the length of the external thread.

Preferably, a plurality of the planetary gears 223 of the planetary gear assembly of each stage are respectively meshed with the gears 23, the sun gear 222 is respectively meshed with a plurality of the planetary gears 223, and the planet carrier 221 is connected with a plurality of the planetary gears 223.

Specifically, the plurality of planetary gears 223 are disposed between the sun gear 222 and the gear 23, and the plurality of planetary gears 223 are respectively meshed with the sun gear 222 and the gear 23, the sun gear 222 is a driving member to drive the plurality of planetary gears 223 to rotate, rotation and revolution of the plurality of planetary gears 223 are realized, the planetary carrier 221 is a driven member, the planetary carrier 223 is connected with the plurality of planetary gears 223, and the planetary carrier 221 is driven to rotate by the plurality of planetary gears 223.

In the present embodiment, the number of the plurality of planetary gears 223 is 3.

As shown in fig. 2, the driving device drives the sun gear 222 of the primary planetary gear assembly 22a to rotate and drives the planet carrier 221 to rotate through the plurality of planet gears 223, and the planet carrier 221 of the primary planetary gear assembly 22a is coaxially connected with the sun gear 222 of the intermediate planetary gear assembly 22b and drives the intermediate planetary gear assembly 22b to rotate and drives the final planetary gear assembly 22c to rotate through the planet carrier 221 of the intermediate planetary gear assembly 22 b.

In the present embodiment, the transmission sequence of the reduction gear 2 is: the output shaft of the driving device 1 is connected with the sun gear 222 of the primary planetary gear assembly 22a to drive the sun gear 222 to rotate, and the plurality of planet gears 223 are meshed with the sun gear 222 and the gears 23 to realize the rotation and revolution of the plurality of planet gears 223, so that the planet carrier 221 is driven to rotate to realize the rotation of the primary planetary gear assembly 22 a; the planet carrier 221 of the primary planetary gear assembly 22a serves as the output end of the present stage and the input end of the intermediate planetary gear assembly 22b which is the next adjacent planetary gear assembly, so that the planet carrier 221 of the primary planetary gear assembly 22a serves as the power source to rotate the intermediate planetary gear assembly 22b with the sun gear 222 of the intermediate planetary gear assembly 22b, and the planet carrier 221 of the intermediate planetary gear assembly 22b is connected to the sun gear 222 of the final planetary gear assembly 22c to rotate the final planetary gear assembly 22 c. Thus, the manner of transmission of the multi-stage planetary gear assembly is determined.

Preferably, the sun gear 222 of each of the remaining planetary gear assemblies except for the primary planetary gear assembly 22a is connected to the planet carrier 221 of the adjacent, previous planetary gear assembly.

In this embodiment, the reduction gear unit 2 is composed of a 3-stage planetary gear assembly, and the 3-stage planetary gear assembly is a 3-stage reduction realized by serial connection, the sun gear 222 of the primary planetary gear assembly 22a is connected with the output shaft, the sun gear of the intermediate planetary gear assembly 22b is connected with the planet carrier 221 of the primary planetary gear assembly, and the sun gear 222 of the final planetary gear assembly 22c is connected with the planet carrier 221 of the intermediate planetary gear assembly 22b, so that the planet carrier 221 is the output body of the planetary gear assembly at the present stage and the input body of the planetary gear assembly at the next adjacent stage.

Specifically, the planet carrier 221 includes a carrier body 224, a plurality of fixed shafts 225 disposed on one side of the carrier body 224, and a transmission shaft 226 disposed on the other side of the carrier body 224, wherein the plurality of fixed shafts 225 are correspondingly connected to the plurality of planet gears 223, and the transmission shaft 226 is connected to the sun gear 222 of the planetary gear assembly adjacent to the next stage.

The planet carrier 221 serves as an output body of the present stage planetary gear assembly and an input body of an adjacent lower stage planetary gear assembly, and realizes series connection of the multi-stage planetary gear assemblies. A plurality of fixed shafts 225 and a driving shaft 226 are provided to be disposed at both sides of the carrier body 224, and the plurality of fixed shafts 225 are correspondingly connected to the plurality of planetary gears 223, and the driving shaft 226 is connected to the sun gear 222 of the planetary gear assembly of the next stage.

In this embodiment, the planet carrier body 224 is a triangular plate, the transmission shaft 226 is disposed at the center of the triangular plate, and the axis coincides with the rotation axis of the sun gear. At each corner of the triangular plate, 3 fixed shafts 225 are provided, and the axis of the fixed shaft 224 is parallel to the rotation axis of the sun gear.

Preferably, the output power of the driving device 1 is 1W to 75W.

Specifically, the output power of the driving device 1 is 1W to 75W. The output power of the driving device 1 determines the working speed of the electronic lock, the higher the power is, the faster the electronic lock completes the work, the lower the power is, the slower the electronic lock completes the work, and even the locking work of the lock rod 4 cannot be completed. In order to test the influence of output power on the operation of the electronic lock, the inventor performs relevant tests, the test method is to select driving devices 1 with different output powers, other structures of the electronic lock are the same, each driving device 1 continuously works for 1 minute, the number of times of completing the operation of the electronic lock is recorded, the number of times is more than or equal to 40 and is qualified, and the number of times is less than 40 and is not qualified. If abnormal sound occurs during the operation of the electronic lock, the electronic lock is regarded as unqualified. The results are shown in Table 1.

Table 1: influence of different output power on electronic lock speed and abnormal sound

Power (W)	0.9	1	2	5	10	20	30	50	60	65	70	75	80
														Number of completions	39	40	45	52	60	65	70	75	80	87	92	95	95
Whether or not to make abnormal sound	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Is that

As shown in table 1, when the output power of the driving device 1 is less than 1W, the number of times of switching the electronic lock is completed within 1 minute is less than 40, and the speed is too slow to be unqualified, so the inventor selects the minimum power of the driving device 1 to be 1W, when the output power of the driving device 1 is greater than 75W, the electronic lock is affected by the overall design, the speed enters the bottleneck period without obvious improvement, and abnormal noise occurs, so the output power of the driving device 1 selected by the inventor is 1W to 75W. Specifically, it may be 1W, 2W, 5W, 10W, 20W, 30W, 50W, 60W, 65W, 70W, 75W, etc.

Preferably, the transmission ratio of the driving device 1 and the rod 3 assembly is 3/1-72/1.

Specifically, the transmission ratio of the driving device 1 to the output gear 3 is 3/1 to 72/1. The ratio=driving wheel rotation speed/driven wheel rotation speed, and it can be seen from the formula that the ratio is inversely proportional to the driven wheel rotation speed, i.e. the smaller the ratio is, the larger the rotation speed of the driven wheel is, the abnormal sound is likely to occur due to inaccurate control. Therefore, the inventor selects different transmission ratios of the driving device 1 and the rod 3 to test, and observes that the number of times of completion of the locking or opening action of the lock rod 4 in 1 minute is less than 40 times, and the number of times is failed, and the abnormal sound is also failed, and the result is shown in table 2.

Table 2: influence of the transmission ratio of the drive 1 and the rod 3 on the speed of the electronic lock

Ratio of transmission

2/1

3/1

9/1

15/1

24/1

30/1

36/1

42/1

60/1

66/1

72/1

75/1

Number of completions

98

96

91

88

83

78

70

61

53

46

40

38

Whether or not to make abnormal sound

Is that

Whether or not

As can be seen from Table 2, if the transmission ratio of the driving device 1 to the rod 3 is less than 3/1, the electronic lock will have abnormal sound, so it is not qualified; meanwhile, when the transmission ratio of the driving device 1 to the output gear 3 is larger than 72/1, the locking or opening actions of the electronic lock completed within 1 minute are less than 40 times, and the response speed is too slow and is not qualified; therefore, the inventor selects the transmission ratio of the driving device 1 and the rod piece 3 to be 3/1-72/1.

The working principle of the electronic lock is described in detail below with reference to the accompanying drawings: the motor 1 is started, the output shaft rotates to drive the sun gear 222 of the primary planetary gear assembly 22a to rotate, 3 planetary gears 223 are meshed with the sun gear 222 and the gear 23 to realize self-assembling and revolution, rotation is transmitted to the planetary carrier 221 connected with the planetary gears 223, the transmission shaft 226 of the planetary carrier 221 of the primary planetary gear assembly 22a is connected with the sun gear 222 of the middle planetary gear assembly 22b to drive the sun gear 222 to rotate, 3 planetary gears 223 of the middle planetary gear assembly 22b are meshed with the sun gear 222 and the gear 23 to realize self-assembling and revolution, rotation is transmitted to the planetary carrier 221 connected with the planetary gears 223, the planetary carrier 221 of the middle planetary gear assembly 22b is further connected with the sun gear 222 of the final planetary gear assembly 22c to drive the sun gear 23 to realize self-assembling and revolution, rotation is transmitted to the planetary carrier 221 connected with the planetary gears 223, the planetary carrier 221 is connected with the rod 3 to drive the rod 3 to rotate, the first thread 31 of the rod 3 is meshed with the second thread 44 of the rod 4 to convert rotation into linear motion, and locking or unlocking of the rod 4 is realized.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. An electronic lock, comprising:

a driving device including an output shaft outputting torque;

a lever coupled to the planet carrier of the final planetary gear assembly, the lever having a first thread;

the lock rod is provided with a second thread matched with the first thread;

2. The electronic lock of claim 1, wherein the direction of the reciprocation is parallel to the axis direction of the output shaft.

3. The electronic lock of claim 1, wherein the locking bar has a small diameter portion and a large diameter portion, the large diameter portion has a receiving cavity, the second thread is an internal thread provided at an inner periphery of the receiving cavity, and the first thread is an external thread provided at an outer periphery of the rod.

4. The electronic lock of claim 3, wherein the internal thread is a double-wire internal thread and the external thread is a double-wire external thread.

5. An electronic lock according to claim 3, wherein the axis of rotation of the lever coincides with the axis of rotation of the planetary gear assembly.

6. The electronic lock of claim 4, wherein the length of the double-wire external thread is greater than or equal to a preset movable distance of the locking bar and less than or equal to the length of the receiving cavity.

7. The electronic lock of claim 6, wherein the length of the double-wire internal thread is no greater than the length of the double-wire external thread.

8. The electronic lock of claim 1, wherein a plurality of said planets of each stage of said planetary gear assembly are respectively engaged with said gear, said sun gear is respectively engaged with a plurality of said planets, and said planet carrier is connected with a plurality of said planets.

9. The electronic lock of claim 8, wherein the driving device drives the sun gear of the primary planetary gear assembly to rotate and drives the planet carrier to rotate through a plurality of planet gears, the planet carrier of the primary planetary gear assembly is coaxially connected with the sun gear of the intermediate planetary gear assembly and drives the intermediate planetary gear assembly to rotate and drives the final planetary gear assembly to rotate through the planet carrier of the intermediate planetary gear assembly.

10. The electronic lock of claim 9, wherein the sun gear of each stage of the planetary gear assembly, except the primary planetary gear assembly, is respectively connected with the planet carrier of an adjacent, previous stage of the planetary gear assembly.

11. The electronic lock of claim 1, wherein the output power of the driving means is 1W to 75W.

12. The electronic lock of claim 1, wherein a transmission ratio of the driving device to the lever is 3/1 to 72/1.