CN219159449U

CN219159449U - Electronic lock

Info

Publication number: CN219159449U
Application number: CN202320080630.9U
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: 2023-06-09
Anticipated expiration: 2033-01-12

Abstract

The utility model discloses an electronic lock, include: the driving device comprises an output shaft; the speed reducing device comprises a fixed shaft, a primary planetary gear assembly, a final planetary gear assembly and an intermediate planetary gear assembly; each stage of planetary gear assembly comprises a sun gear, a plurality of planetary gears and an external rotating gear ring, and an output shaft is connected with the external rotating 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 eccentric component is arranged on a planetary gear of the final planetary gear component through a rotating frame; the eccentric part of the eccentric component is matched and connected with the clamping concave part of 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. Moreover, because the transmission mechanism in the existing electronic lock needs multistage deceleration, the electronic lock is large in size generally, the requirement of the charging device of the current new energy automobile cannot be met, and meanwhile, the existing electronic lock is small in bearable load and large in abrasion. 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 which can be assembled in a small space, and which is simple in structure and convenient to maintain.

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 eccentric assembly disposed on a plurality of the planets of the final planetary gear assembly by a rotating carrier; the eccentric assembly includes an eccentric portion having an axis that is offset in parallel with respect to the rotational axis of the speed reduction device; and

the locking rod is provided with a clamping concave part, and the eccentric part is connected with the clamping concave part in a matching way;

the driving device drives the eccentric part to rotate through the speed reducing device so as 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 engaging recess is an accommodating space with an open side of the lock lever, and the eccentric portion is accommodated in the accommodating space.

Preferably, the lock rod comprises a rod body and an additional body protruding radially from the rod body, and the accommodating space is formed in the additional body.

Preferably, the accommodating space comprises a first side wall and a second side wall opposite to the first side wall, the eccentric assembly rotates to drive the eccentric part to eccentrically reciprocate, and the first side wall or the second side wall is respectively pushed to drive the lock rod to reciprocate.

Preferably, the first side wall and the second side wall are connected by a connecting portion, and the surface profile of the connecting portion matches the outer surface profile of the eccentric portion.

Preferably, the eccentric assembly further comprises a rotating part, wherein the axis of the rotating part coincides with the rotating axis of the speed reducing device, and the rotating part is connected with the eccentric part through a connecting part.

Preferably, the connection part includes a first connection part and a second connection part perpendicular to the rotation part and the eccentric part at the same time, and the first connection part and the second connection part are disposed at a distance.

Preferably, the output power of the driving device is 1W to 80W.

Preferably, the transmission ratio of the driving device and the eccentric assembly is 5/4-125/12.

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 adopts an eccentric structure, so that the electronic lock can bear larger load; the electronic lock is favorable for lubrication, has less abrasion, greatly improves the unlocking efficiency of the electronic lock, and can achieve the purposes of reinforcing, expanding stroke, realizing remote transmission and the like.

3. The electronic lock is connected with the next-stage planet carrier in series by arranging the flat plate part on one side of the rotary gear ring, and has the advantages of simple structure, convenience in manufacturing and cost saving.

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 view of the eccentric assembly of the electronic lock of the present utility model;

fig. 6 is a schematic structural view of the electronic lock lever 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-annular ring gear part, 252-flat plate part, 253-open end face, 3-eccentric assembly, 31-eccentric part, 32-rotary part, 33-first connecting part, 34-second connecting part, 35-rotary frame,

36-rotating body, 37-connecting shaft, 4-lock rod, 41-rod body, 42-additional body,

43-snap recess, 44-first side arm, 45-second side arm, 46-connection.

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 eccentric assembly 3, said eccentric assembly 3 being disposed on a plurality of said planet wheels 24 of said final planetary gear assembly 22c by a rotating carrier 35; the eccentric assembly 3 comprises an eccentric portion 31, the axis of the eccentric portion 31 being offset in parallel with respect to the rotation axis of the speed reduction device 2; and

a lock lever 4, wherein the lock lever 4 is provided with an engaging recess 43, and the eccentric portion 31 is connected with the engaging recess 43 in a matching manner;

the driving device 1 drives the eccentric part 31 to rotate through the speed reducing device 2 so as 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 is fixed, and the sun gear 23 is further 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 and drives 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 and 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 and drive the final planetary gear assembly 22c to rotate, the eccentric assembly 3 is arranged on the planet gears 24 of the final planetary gear assembly 22c through the rotating frame 35, and the driving device 1 drives the eccentric assembly 3 to rotate through the speed reduction device 2, and the eccentric part of the eccentric assembly 3 is in matched connection with the clamping concave part 43 of the lock rod 4 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 and drives the external rotary gear ring 25 to rotate, so that the external rotary gear ring 25 is used as an input end of the present 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 and drives 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.

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 eccentric assembly 3. 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.

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.

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

In order to realize the connection of the eccentric assembly 3 and the planet gears 24 of the final planetary gear assembly 22c, the inventor is respectively connected with the planet gears 24 and the eccentric assembly 3 through the rotating frame 35, so that the planet gears 24 drive the rotating frame 35 to rotate and further drive the eccentric assembly 3 to rotate. In order to achieve that the rotating carrier 35 can be connected to the planet wheels 24, the rotating carrier 35 is designed to comprise a rotating body 36 connected to the eccentric assembly 3, a connecting shaft 37 being provided in correspondence with each planet wheel 24 on the side of the rotating body 36 facing the planet wheel 24. In this embodiment, in order to ensure the connection between the rotating body 36 and the eccentric assembly 3, a connecting hole connected with the eccentric assembly 3 is provided at the center of the rotating body 36, and the eccentric assembly 3 is fixedly connected with the hole of the rotating body 36, so as to fix the rotating frame 35 and the eccentric assembly 3.

In other embodiments, a fixing rod with a central hole may be disposed at the center of the end surface of the rotating body 36 connected with the eccentric assembly 3, a connecting hole is disposed at the center of the eccentric assembly 3, and the fixing rod is fixedly connected with the connecting hole, so as to fix the rotating frame 35 and the rod 3.

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

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

It will be appreciated that the rotational movement of the output shaft is changed to a linear movement by the eccentric assembly 3 connected by the speed reducing device 2, and the eccentric portion 31 of the eccentric assembly 3 being matingly connected with the engagement recess 43 of the lock lever 4.

In this embodiment, the direction of the reciprocating motion is perpendicular to the axis direction of the output shaft, avoiding output force loss.

As shown in fig. 6, the engaging recess 43 is an accommodation space in which the lock lever 4 is open at a side portion, and the eccentric portion 31 is accommodated in the accommodation space.

Preferably, the lock lever 4 includes a lever body 41 and an additional body 42 protruding radially from the lever body, and the accommodating space is disposed on the additional body 42.

In this embodiment, in order to enhance the strength of the lock lever 4, an additional body 42 is provided on the lock lever body 41, the additional body 42 radially protrudes from the lever body 41, and the engaging recess 43 is provided in a receiving space on a side surface of the additional body 42, so that the lock lever 4 is prevented from being deformed or broken due to a large ejection force, and a large ejection force can be output.

Preferably, the accommodating space includes a first side wall 44 and a second side wall 45 opposite to the first side wall, and the eccentric assembly 3 rotates to drive the eccentric portion 31 to reciprocate eccentrically, so as to push the first side wall 44 or the second side wall 45 respectively, and drive the lock lever 4 to reciprocate.

Preferably, the first sidewall 44 and the second sidewall 45 are connected by a connecting portion 46, and a surface profile of the connecting portion 46 matches an outer surface profile of the eccentric portion 31.

Specifically, the accommodating space has a first side wall 44, a second side wall 45, and a connecting portion 46, the first side wall 44 and the second side wall 45 are arranged opposite to each other, and the connecting portion 46 connects the first side wall 44 and the second side wall 45; the connecting part 46 is arc-shaped and is matched with the outer contour of the eccentric part 31, the distance between the outer contour of the eccentric part 31 and the surface contour of the connecting part 46 is greater than or equal to zero, and when the eccentric part 31 rotates, the connecting part 46 is prevented from generating resistance by friction; the eccentric portion 31 is sandwiched between the first side wall 44 and the second side wall 45. When the eccentric assembly 3 drives the eccentric portion 31 to reciprocate, the eccentric portion 31 pushes the first sidewall 44 or the second sidewall 45, respectively, so as to drive the actuator 4 to reciprocate.

As shown in fig. 5, the eccentric assembly 3 further includes a rotating portion 32, an axis of the rotating portion 32 coincides with a rotation axis of the speed reducing device 2, and the rotating portion 32 is connected to the eccentric portion 31 through a connection portion.

Preferably, the connection part includes a first connection part 33 and a second connection part 34 perpendicular to the rotation part 32 and the eccentric part 31 at the same time, and the first connection part 33 and the second connection part 34 are spaced apart.

Specifically, in order to make the eccentric assembly 3 realize the conversion of the rotational motion into the linear motion while avoiding the excessively complex structure thereof, the eccentric assembly 3 further comprises a rotating part 32 for rotation, in order to avoid the loss of the output force, the inventor designs the axis of the rotating part 32 to coincide with the rotation axis of the speed-raising device 2, connects the eccentric part 31 and the rotating part 32 into a whole through a connecting part, the connecting part comprises a first connecting part 33 and a second connecting part 34 which are perpendicular to the eccentric part 31 and the rotating part 32 at the same time, and in order to ensure the connection strength between the eccentric part 31 and the rotating part 32, the first connecting part 33 and the second connecting part 34 are arranged at intervals, and meanwhile, the eccentric assembly 3 can be used for achieving the purposes of reinforcing, expanding the stroke, realizing the long-distance transmission and the like.

In the present embodiment, in order to ensure that the engaging concave portion 41 does not interfere with the first connecting portion 33 and the second connecting portion 34 when the eccentric portion 31 and the engaging concave portion 41 are connected in a matched manner, the inventors designed the interval between the first connecting portion 33 and the second connecting portion 34 to be larger than the width of the engaging concave portion 41.

More specifically, in order to ensure that the stress generated when the eccentric portion 31 reciprocates the lock lever 4 does not cause breakage of the connection portions of the first and

second connection portions

33 and 34 and the rotating portion 31, the width of the connection ends of the first and

second connection portions

33 and 34 and the rotating portion 31 is designed to be larger than the width of the connection ends with the eccentric portion 32, so the diameter of the rotating portion 31 is designed to be larger than the diameter of the eccentric portion 32. Thereby, the strength of the rotating portion 31 is ensured also in order to increase the areas of the first connecting portion 33 and the second connecting portion 34.

Preferably, the output power of the driving device 1 is 1W to 80W.

Specifically, the output power of the driving device 1 is 1W to 80W. 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	35	45	55	60	65	70	75	80	85
														Number of completions	38	40	60	86	106	138	149	155	159	165	174	180	180
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 80W, the electronic lock is influenced 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-80W. Specifically, it may be 1W, 10W, 25W, 35W, 45W, 55W, 60W, 65W, 70W, 75W, 80W, etc.

Preferably, the transmission ratio of the driving device 1 and the eccentric assembly 3 is 5/4-125/12.

Specifically, the transmission ratio of the driving device 1 to the eccentric assembly 3 is 5/4-125/8, the transmission ratio=the driving wheel rotation speed/the driven wheel rotation speed, and the inverse ratio of the transmission ratio to the driven wheel rotation speed can be seen from the formula, namely, the smaller the transmission ratio, the larger the rotation speed of the driven wheel is, and the larger the rotation speed of the driven wheel is, the abnormal sound can easily 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 eccentric assembly 3 on the speed of the electronic lock

As can be seen from Table 2, if the transmission ratio of the driving device 1 to the eccentric assembly 3 is less than 5/4, abnormal sound occurs in the electronic lock, so that the electronic lock is disqualified; meanwhile, when the transmission ratio of the driving device 1 to the eccentric assembly 3 is larger than 125/12, 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 rod 3 to have a transmission ratio of 5/4-125/12.

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 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 of the final planetary gear assembly 22c and drive the planetary gears 24 meshed with the sun gear assembly to rotate, the planetary gears 24 are meshed with the sun gear assembly 23 to realize rotation, the planetary gears 24d drive the rotating frame 31 to rotate, and then drive the eccentric assembly 3 to rotate, and the eccentric part 31 of the eccentric assembly 3 is in locking bar 4 to realize linear locking and unlocking, and locking of the eccentric assembly 4 are matched with the locking bar 4.

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;

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 engaging recess is a receiving space in which a side portion of the lock lever is open, and the eccentric portion is received in the receiving space.

4. The electronic lock of claim 3, wherein the lock lever comprises a lever body and an additional body protruding radially from the lever body, and the accommodating space is formed on the additional body.

5. The electronic lock according to claim 3, wherein the accommodating space comprises a first side wall and a second side wall opposite to the first side wall, the eccentric assembly rotates to drive the eccentric part to eccentrically reciprocate, and the first side wall or the second side wall is respectively pushed to drive the lock rod to reciprocate.

6. The electronic lock of claim 5, wherein the first sidewall and the second sidewall are connected by a connecting portion having a surface profile that matches an outer surface profile of the eccentric portion.

7. The electronic lock of claim 1, wherein the eccentric assembly further comprises a rotating portion, an axis of the rotating portion coincides with a rotational axis of the speed reducing device, and the rotating portion and the eccentric portion are connected by a connecting portion.

8. The electronic lock of claim 7, wherein the connection portion includes a first connection portion and a second connection portion that are perpendicular to the rotation portion and the eccentric portion at the same time, the first connection portion and the second connection portion being disposed at a spacing.

9. The electronic lock of claim 1, wherein the output power of the driving means is 1W to 80W.

10. The electronic lock of claim 1, wherein a transmission ratio of the drive means to the eccentric assembly is 5/4-125/12.