CN219498382U

CN219498382U - Electronic lock

Info

Publication number: CN219498382U
Application number: CN202320080687.9U
Authority: CN
Inventors: 王超
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2023-01-12
Filing date: 2023-01-12
Publication date: 2023-08-08
Anticipated expiration: 2033-01-12

Abstract

Disclosed herein is an electronic lock including: a driving device; the speed reducing device comprises a fixed shaft, a primary planetary gear assembly, a final planetary gear assembly and an intermediate planetary gear assembly; the planetary gear assembly comprises a sun gear fixedly arranged on the fixed shaft, a planet gear meshed with the sun gear and an external rotary gear ring meshed with the planet gear, and an output shaft of the driving device is connected with the external rotary gear ring of the primary planetary gear assembly; the planet wheel of each stage of planetary gear assembly is connected with the external rotary gear ring of the adjacent next stage of planetary gear assembly; the output gear is arranged on a plurality of planetary gears of the final planetary gear assembly through a rotating carrier; the driving device drives the output gear to rotate through the speed reducing device, and the output gear is meshed with the rack on the lock rod 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, low efficiency in the whole assembly process, and insufficient ejection force, and meanwhile, the reduction ratio of the existing electronic lock is generally smaller. 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;

a speed reducing device comprising a stationary shaft and a primary planetary gear assembly, a final planetary gear assembly disposed on the stationary shaft, 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 planetary gear assembly comprises a sun gear fixedly arranged on the fixed shaft, a plurality of planetary gears meshed with the sun gear and an external rotary gear ring meshed with the planetary gears, and the output shaft is coaxially connected with the external rotary gear ring of the primary planetary gear assembly; the planet wheel of each stage of the planetary gear assembly is fixedly connected with the external rotary gear ring of the planetary gear assembly of the next adjacent stage;

an output gear disposed on a plurality of the planets of the final planetary gear assembly by a rotating carrier; and

the locking rod is provided with a rack at least partially;

the driving device drives the output gear to rotate through the speed reducing device, and the output gear is meshed with the rack to drive the lock rod to reciprocate.

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

Preferably, the external rotating ring gear includes a flat plate portion provided perpendicular to an axis of the output shaft and an annular ring gear portion provided on the flat plate portion, an opening of the annular ring gear portion being provided toward the output gear.

Preferably, the annular ring gear portion is integrally formed with the flat plate portion or fixedly connected as a single integral component.

Preferably, the planet gears in each stage of the planetary gear assembly are fixedly connected with the external rotating ring gear in an adjacent next stage of the planetary gear assembly by a connecting structure, the connecting structure comprising a shaft provided on one of the planet gears and the flat plate portion, and a hole provided on the other, the shaft and the hole being fixedly connected.

Preferably, a gap is provided between an open end face of the annular ring gear portion in the planetary gear assembly of each stage and the flat plate portion in the planetary gear assembly of the adjacent next stage.

Preferably, the rotating frame comprises a rotating body, a plurality of connecting shafts are arranged on one side of the rotating body, facing towards a plurality of planetary gears in the final planetary gear assembly, of the final planetary gear assembly, the connecting shafts are fixedly connected with the planetary gears, and the output gear is fixed on the other side of the rotating body.

Preferably, the output power of the driving device is 1W to 100W.

Preferably, the transmission ratio of the driving device and the output gear is 5/4-125/6.

The utility model has the following beneficial effects:

1. according to the electronic lock, a 3-stage speed reduction device consisting of a primary planetary gear assembly, a middle planetary gear assembly and a final planetary gear assembly, wherein the primary planetary gear assembly, the middle planetary gear assembly and the final planetary gear assembly are driven by a sun gear fixed and an external rotary gear ring, so that the effect of 3-stage speed reduction 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 outputs higher ejection force through the meshing of the gear and the rack.

3. According to the electronic lock, the flat plate part is arranged on one side of the rotary gear ring to realize the connection with the output shaft or the planetary gear of the adjacent upper-stage planetary gear assembly, so that the serial connection of the 3-stage planetary gear assembly is realized, the structure is simple, the parts are few, and the manufacturing is convenient and the cost is saved.

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 an electronic lock shaft according to the present utility model;

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

FIG. 5 is a schematic diagram of the herringbone gear structure of the electronic lock of the present utility model;

fig. 6 is a schematic view of the structure of the locking lever of the electronic lock of the present utility model.

The figures are marked as follows:

1-driving device, 2-speed increasing device, 21-fixed shaft, 211-positioning part, 212 fixed rod,

22 a-primary planetary gear assembly, 22 b-primary planetary gear assembly,

22 c-primary planetary gear assembly, 23-sun gear, 24-planet gears, 25-externally rotating ring gear,

251-ring gear part, 252-flat plate part, 26-shaft, 27-hole

3-output gear, 31-rotating frame, 32-rotating body, 33-connecting shaft,

4-lock rod, 41-rod body, 42-additional body, 43-rack.

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. 1-6, an electronic lock includes:

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

a speed reducing device 2, the speed reducing device 2 comprising a fixed shaft 21 and 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 planetary gear assembly 22a and the final planetary gear assembly 22c, respectively, which are provided on the fixed shaft 21;

each stage of planetary gear assembly comprises a sun gear 23 fixedly arranged on the fixed shaft 21, a plurality of planet gears 24 meshed with the sun gear 23 and an external rotary gear ring 25 meshed with the planet gears, and the output shaft is coaxially connected with the external rotary gear ring 25 of the primary planetary gear assembly 22 a; the planet 24 of each stage of the planetary gear assembly is fixedly connected with the external rotating ring gear 25 of the planetary gear assembly of the next adjacent stage;

an output gear 3, said output gear 3 being disposed on a plurality of said planets 24 of said final planetary gear assembly 22c by a rotating carrier 31; and

a lock lever 4, at least part of the lock lever 4 being provided with a rack 43;

the driving device 1 drives the output gear 3 to rotate through the speed reducing device 2, and the output gear 3 is meshed with the rack 43 to drive the lock rod 4 to reciprocate.

The speed reducing device 2 includes a fixed shaft 21 and a primary planetary gear assembly 22a, an intermediate planetary gear assembly 22b, and a final planetary gear assembly 22c provided on the fixed shaft 21.

The planetary gear assembly connected to the output shaft is defined as a primary planetary gear assembly 22a, the planetary gear assembly connected to the output gear 3 is defined as a final planetary gear assembly 22c, the planetary gear assembly intermediate 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 speed reducing device 2 is composed of 3-stage planetary gear assemblies, 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 comprises a stationary shaft 21, a sun gear 23, a plurality of planet gears 24 and an external rotating ring gear 25; one non-fixed end of the fixed shaft 21 sequentially passes through the output gear 3 and the sun gear 23 of each stage of planetary gear assembly, and fixes the sun gear 23 on the fixed shaft 21, and the fixed shaft 21 is fixed on the shell of the electronic lock, so that the fixed shaft 21 and then the sun gear 23 are fixed.

In order to realize the fixation of the fixed shaft 21, the fixed shaft 21 is designed to be composed of a fixed rod 212 and a positioning part 211, the positioning part 211 is arranged at one end of the fixed rod 212 to form the fixed shaft 21 with a T-shaped structure, the fixed rod 212 and the positioning part 211 can be cylindrical or rectangular in section, the positioning part 211 is fixed on a shell installed by the electronic lock to realize the fixation of the fixed shaft 21 and further realize the fixation of the sun gear 23, the fixed rod 211 penetrates through the rod 3 and the sun gear 23 of each stage of planetary gear assembly to ensure that the sun gear 23 of each stage of planetary gear assembly is fixed on the fixed rod 211, and the sun gear 23 and the fixed shaft 21 can be fixed in an interference fit mode or a key connection or positioning pin fixing mode.

In the present embodiment, the number of the planetary gears 24 is 3, and the fixed lever 212 and the positioning portion 211 are rectangular in cross section.

The speed reducing principle of the speed reducing device 2 is as follows: the sun gear 23 is fixedly arranged, the external rotary gear ring 25 is active, the planet gears 24 are passive, so that an output shaft of the driving device 1 is connected with the external rotary gear ring 25 of the primary planetary gear assembly 22a to drive the external rotary gear ring 25, the planet gears 24 are meshed with the external rotary gear ring 25 to realize revolution of the planet gears 24, the planet gears 24 are meshed with the sun gear 23 to realize self rotation, the primary planetary gear assembly 22a is further rotated, the planet gears 24 of the primary planetary gear assembly 22a are connected with the external rotary gear ring 25 of the intermediate planetary gear assembly 22b to drive the external rotary gear ring 25 of the intermediate planetary gear assembly 22b to rotate, the planet gears 24 of the intermediate planetary gear assembly 22b are connected with the external rotary gear ring 25 of the final planetary gear assembly 22c to drive the final planetary gear assembly 22c to rotate, the output gear 3 is arranged on the planet gears 24 of the final planetary gear assembly 22c through the rotating frame 31, and the driving device 1 drives the output gear 3 to rotate through the speed reduction device 2, and the output gear 3 is meshed with the gear rack 43 to drive the lock rod 4 to reciprocate.

In the present embodiment, the transmission sequence of the speed reducing device 2 is: the output shaft of the driving device 1 is connected with an external rotary gear ring 25 of the primary planetary gear assembly 22a to drive the planetary gears 24 to rotate, and the planetary gears 24 are meshed with the sun gear 23 and the external rotary gear ring 25 to realize rotation and revolution of the planetary gears 223, so that the primary planetary gear assembly 22a is rotated; the planetary gear 24 of the primary planetary gear assembly 22a is connected with the external rotary gear ring 25 of the intermediate planetary gear assembly 22b to drive the external rotary gear ring 25 to rotate, so that the external rotary gear ring 25 is used as an input end of the primary stage, the rotation of the intermediate planetary gear assembly 22b is realized through the revolution and the rotation of the planetary gear 24, the planetary gear 24 of the intermediate planetary gear assembly 22b is connected with the external rotary gear ring 25 of the final planetary gear assembly 22c to drive the external rotary gear ring 25 to rotate, and the rotation of the final planetary gear assembly 22c is realized through the revolution and the rotation of the planetary gear 24. Thus, the manner of transmission of the multi-stage planetary gear assembly is determined.

Therefore, by setting the external rotary gear ring 25 as active transmission, the plurality of planet gears 24 are respectively meshed with the sun gear 23 and the external rotary gear ring 25, so that the planet gears 24 rotate and revolve, and the planetary gear assembly 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.

In some embodiments, the output gear 3 is a cylindrical gear.

In the present embodiment, the output gear 3 is set as the herringbone gear by utilizing the characteristics of high bearing capacity, stable transmission, small axial load, and the like of the herringbone gear. The rack 43 is provided as a herringbone rack which meshes with the herringbone gear.

It will be appreciated that the rotational movement of the output shaft is output through the output gear 3 connected to the speed reducing device 2, and the engagement of the output gear 3 with the rack 43 of the lock lever 4 changes the rotational movement into a linear movement, and the direction of the linear movement may be any direction.

In this embodiment, to ensure an optimal output force, the lock lever 4 is arranged perpendicular to the output shaft. Meanwhile, in order to strengthen the strength of the lock rod 4, an additional body 42 is provided on the lock rod body 41, the additional body 42 protrudes radially from the rod body 41, and a herringbone rack is provided on the additional body 42, so that deformation or breakage of the lock rod 4 due to large ejection force is avoided, and larger ejection force can be output.

The additional body 41 may take various shapes, and may be one of a cylinder, a circular truncated cone, a cone, an elliptic cylinder, an elliptic truncated cone, an elliptic cone, a polygonal column, a polygonal table and a polygonal pyramid, and a lock lever may be determined according to actual conditions.

Preferably, the external rotary ring gear 25 includes a flat plate portion 251 provided perpendicular to the axis of the output shaft and an annular ring gear portion 251 provided on the flat plate portion 252, an opening of the annular ring gear portion 251 being provided toward the output gear 3.

Preferably, the annular ring gear portion 251 is integrally formed with the flat plate portion 251 or fixedly connected as a single integral component.

Specifically, in order to realize the fixed sun gear 23, the external rotating ring gear 25 is driven, and the planetary gear 24 is driven to reduce the speed, and when considering that the external rotating ring gear 25 is connected with the output shaft and can drive the next stage planetary gear assembly to rotate, the inventor designs the structure of the external rotating ring gear 25 to be a combination of a flat plate part 252 and an annular ring gear part 251, and the flat plate part 252 is connected with the output shaft or the planetary carrier 26 of the adjacent previous stage, so that the opening of the annular ring gear part 251 is formed and arranged towards the output gear. The annular ring gear portion 251 and the flat plate portion 252 may be integrally formed, or may be separately designed as two separate parts, and then the annular ring gear portion 251 and the flat plate portion 252 may be fixedly connected as a unit.

Preferably, the planet 24 in each stage of the planetary gear assembly is fixedly connected to the external rotating ring gear 25 in the adjacent next stage of the planetary gear assembly by a connection structure comprising a shaft 26 provided on one of the planet 24 and the flat plate portion 252, and a hole 27 provided on the other, the shaft 26 and the hole 27 being fixedly connected.

In this embodiment, in order to achieve connection between the planet 24 and the external rotary ring gear 25 and drive the external rotary ring gear 25 to rotate, the inventor has provided a shaft 26 at the center of the planet 23, which can rotate itself and can connect with a flat plate 252 of the external rotary ring gear 25 to drive the flat plate 252, a hole 27 matching with the shaft 26 is provided in the flat plate 252, the shaft 26 is fixedly connected with the hole 27, and when the planet 24 and the adjacent next stage external rotary ring gear 25 mesh to revolve and drive the flat plate 252 of the adjacent next stage planetary gear assembly to rotate through the shaft 27, the external rotary ring gear 25 is driven to rotate.

In other embodiments, the end face of the flat plate portion 252 facing the output shaft may be provided with a fixed shaft 26, the central portion of the planetary gear 24 is provided with a hole 27 matching with the shaft 26, the hole 27 of the planetary gear 24 is fixed on the shaft 26 through a bearing, when the planetary gear 24 is meshed with the sun gear 23, rotation can be achieved, revolution can be achieved through meshing with the ring gear 251, and further the flat plate portion 252 of the planetary gear assembly at the next stage is rotated to drive the external rotary gear 25 to rotate.

Thus, rotation of the next stage star gear assembly is accomplished by the fixed connection of the set shaft 26 and the bore 27.

Preferably, there is a gap between the open end face 253 of the annular ring gear portion 251 in the planetary gear assembly of each stage and the flat plate portion 252 in the planetary gear assembly of the adjacent next stage.

Specifically, the planetary gear 24 is connected with and drives the adjacent next-stage external rotating gear ring 25 to rotate, and the external rotating gear ring 25 is guaranteed to freely rotate, the external rotating gear ring 25 cannot interfere with the planetary gear 24, and a gap is reserved between the opening end face 253 of the annular gear ring portion 251 and the flat plate portion 252 in the planetary gear assembly of the adjacent next stage.

As shown in fig. 4, the rotating frame 31 includes a rotating body 32, a plurality of connecting shafts 33 are provided on one side of the rotating body 32 facing the plurality of planetary gears 24 in the final planetary gear assembly 22c, the connecting shafts 33 are fixedly connected with the planetary gears 24, and the output gear 3 is fixed on the other side of the rotating body 32.

Specifically, to achieve connection of the output gear 3 with the planet gears 24 of the final planetary gear assembly 22c, the inventor is connected with the planet gears 24 and the output gear 3 through the rotating carrier 31, respectively, so that the planet gears 24 drive the rotating carrier 32 to rotate and further drive the output gear 3 to rotate. In order to achieve that the rotating carrier 31 can be connected to the planet wheels 24, the rotating carrier 31 is designed to comprise a rotating body 32 connected to the output gear 3, a connecting shaft 33 being provided in correspondence with each planet wheel 24 on the side of the rotating body 32 facing the planet wheel 24. In this embodiment, in order to ensure the connection between the rotating body 31 and the output gear 3, a connection hole connected with the output gear 3 is provided at the center of the rotating body 32, a boss connected with the connection hole is provided at one end of the output gear 3 connected with the rotating body 32, and the boss and the hole are fixed to fix the rotating frame 31 and the output gear 3.

In other embodiments, a fixed shaft may be disposed at the center of the end surface of the rotating body 31 connected to the output gear 3, a connecting hole is disposed at the center of the output gear 3, and the fixed shaft is fixedly connected to the connecting hole, so as to fix the rotating frame 31 and the output gear 3.

Preferably, the output power of the driving device is 1W to 100W.

Specifically, the output power of the driving device 1 is 1W to 100W. 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	10	25	45	50	60	65	70	80	90	100	105
														Number of completions	38	40	60	86	138	150	158	165	173	181	189	195	195
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 apparatus 1 is less than 1W, the number of times of switching the electronic lock is completed in 1 minute is less than 40, and the speed is too slow to be acceptable, so the inventors selected the minimum power of the driving apparatus 1 to be 1W. When the output power of the driving device 1 is greater than 100W, the electronic lock is affected by the overall design, the speed enters the bottleneck period without obvious improvement, and abnormal sound can occur at the same time, so that the output power of the driving device 1 selected by the inventor is 1W-100W. Specifically, it may be 1W, 10W, 25W, 45W, 50W, 60W, 65W, 70W, 80W, 90W, 100W, etc.

Preferably, the transmission ratio of the driving device 1 and the output gear 3 is 5/4-125/6.

Specifically, the transmission ratio of the driving device 1 to the output gear 3 is 5/4-125/6, the transmission ratio=the driving wheel rotation speed/the driven wheel rotation speed, and it can be seen from the formula that the transmission ratio is inversely proportional to the driven wheel rotation speed, that is, the smaller the transmission ratio is, the larger the rotation speed of the driven wheel is, and the larger the rotation speed of the driven wheel is, the abnormal sound is likely to occur due to inaccurate control. Therefore, the inventors selected different gear ratios of the driving device 1 and the output gear 3 for testing, observed that the number of times of completion of the locking or unlocking operation of the lock lever 4 within 1 minute was less than 40 times, and failed, and the abnormal sound occurred, and the results are shown in table 2.

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

Ratio of transmission

1

5/4

3/1

5/1

8/1

10/1

72/6

75/6

92/6

18/1

125/6

125/3

Number of completions

195

189

181

173

165

158

132

115

86

60

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 output gear 3 is less than 5/4, abnormal sound occurs in the electronic lock, so that the electronic lock is not qualified; meanwhile, when the transmission ratio of the driving device 1 to the output gear 3 is larger than 125/6, 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 chooses to drive the device 1 and the output gear 3 to have a transmission ratio of 5/4-125/6.

The working principle of the electronic lock is described in detail below with reference to fig. 1 to 6: the motor 1 is started, the output shaft rotates to drive the external rotating gear ring 25 of the primary planetary gear assembly 22a to rotate, and then drives the plurality of planetary gears 24, the external rotating gear ring 25 drives the planetary gears 24 meshed with the external rotating gear ring 25 to rotate, the planetary gears 24 are fixedly connected with the holes of the flat plate part 252 of the external rotating gear ring 25 of the intermediate planetary gear assembly 22b through the shaft 26, the rotation is transmitted to the external rotating gear ring 25 of the intermediate planetary gear assembly 22b, the external rotating gear ring 25 drives the planetary gears 24 meshed with the external rotating gear ring 25 to rotate, the planetary gears 24 are meshed with the sun gear 23 to realize rotation, the planetary gears 24 are fixedly connected with the holes of the flat plate part 252 of the external rotating gear ring 25 of the final planetary gear assembly 22c through the shaft 26, the planetary gears 24 of the final planetary gear assembly 22c are connected with the external rotating gear ring 25 and drive the planetary gears 24 meshed with the sun gear assembly 22c to rotate, the planetary gears 24 meshed with the planetary gears 23 to realize rotation, the planetary gears 24d drive the rotating carrier 31 to rotate, and then drive the output gear 3 to rotate, and the output gear 3 and the lock rod 4 are meshed with the lock rod 4 to realize linear motion, and unlocking of the lock.

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;

the locking rod is provided with a rack at least partially;

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

3. The electronic lock according to claim 1, wherein the external rotation ring gear includes a flat plate portion provided perpendicular to an axis of the output shaft and an annular ring gear portion provided on the flat plate portion, an opening of the annular ring gear portion being provided toward the output gear.

4. An electronic lock according to claim 3, wherein the annular ring gear portion is integrally formed with the flat plate portion or fixedly connected as a single integral component.

5. An electronic lock according to claim 3, wherein the planet in each stage of the planetary gear assembly is fixedly connected to the external rotating ring gear in an adjacent next stage of the planetary gear assembly by a connection arrangement comprising a shaft provided on one of the planet and the flat plate portion, and a bore provided on the other, the shaft and the bore being fixedly connected.

6. An electronic lock according to claim 3, wherein an open end face of said annular ring gear portion in said planetary gear assembly of each stage has a gap with said flat plate portion in said planetary gear assembly of an adjacent next stage.

7. The electronic lock of claim 1, wherein the rotating carrier includes a rotating body, a plurality of connecting shafts are provided on one side of the rotating body facing the plurality of planetary gears in the final planetary gear assembly, the connecting shafts are fixedly connected with the planetary gears, and the output gear is fixed on the other side of the rotating body.

8. The electronic lock of claim 1, wherein the output power of the driving means is 1W to 100W.

9. The electronic lock of claim 1, wherein a transmission ratio of the driving device to the output gear is 5/4 to 125/6.