CN219350835U

CN219350835U - Electronic lock

Info

Publication number: CN219350835U
Application number: CN202222780700.XU
Authority: CN
Inventors: 王超
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-07-14
Anticipated expiration: 2032-10-21

Abstract

Disclosed herein is an electronic lock including: the device comprises a driving device, a driving gear, a crown gear assembly and a lock rod; the driving device comprises an output shaft for outputting torque; the driving gear is connected with the output shaft; the crown gear assembly is meshed with the driving gear and is vertically arranged relative to the driving gear; the output gear assembly comprises an output gear and a rod piece coaxially arranged with the output gear, the output gear is meshed with the crown gear assembly, and the rod piece is provided with a first thread; the lock rod is provided with a second thread matched with the first thread, and the output gear drives the rod piece to rotate so as to drive the lock rod to reciprocate. The electronic lock can complete the work of the electronic lock through a simpler speed reducing mechanism, is convenient to replace and maintain through the threaded connection of the rod piece and the lock rod, and simultaneously realizes that the lock rod is separated from the locking position.

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, due to mutual anastomosis between transmission mechanisms and friction force generated by changing circular motion into linear motion, the driving device in the traditional electronic lock greatly consumes electric energy and motor moment, which not only leads to too short service life of a battery of the electronic lock and easy noise generation, but also easily causes abrasion of a micro-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 generally large in size and cannot meet the requirements of the current new energy automobile charging device, and meanwhile, the connection structure of the existing electronic lock and a lock rod is complex, so that a new scheme of the electronic lock is needed to be provided for solving the problems.

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;

the driving gear is connected with the output shaft;

the crown gear assembly is meshed with the driving gear, and the axis of the crown gear assembly is perpendicular to the axis of the driving gear;

the output gear assembly comprises an output gear and a rod piece coaxially arranged with the output gear, the output gear is meshed with the crown gear assembly, and the rod piece is provided with a first thread; a locking rod;

the lock rod is provided with a second thread matched with the first thread, and the output gear drives the rod piece to rotate so as to drive the lock rod to reciprocate.

Therefore, the lock rod is arranged to be in threaded connection with the rod piece in the output gear assembly, so that the connection relation of the lock rod is simplified, and the lock rod is separated from the locking position.

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

Therefore, the crown gear is adopted to change the output direction of the driving device, so that the direction of the reciprocating motion is parallel to the axis direction of the output shaft, and the loss of torque is avoided.

Preferably, the first thread is an external thread, the lock rod is provided with a hollow cavity, and the second thread is an internal thread arranged at the inner periphery of the hollow cavity.

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 length of the 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 hollow cavity.

Therefore, the length of the external thread is set, so that the lock rod can reach the preset moving distance.

Preferably, the length of the internal thread is smaller than or equal to the length of the external thread.

Thus, the length of the internal thread is set to ensure the engagement length of the internal thread and the external thread, and the engagement of the threads can be satisfied.

Preferably, the lock rod is one of a cylinder, a truncated cone, a cone, an elliptic cylinder, an elliptic cone, a polygonal column, a polygonal table and a polygonal pyramid.

Thus, a kind of lock lever can be determined according to the actual situation.

Preferably, the crown gear assembly includes a crown gear engaged with the drive gear and a first helical gear engaged with the output gear.

Therefore, the crown gear is meshed with the driving gear, the output direction of the driving device is changed, and torque is transmitted out through the arrangement of the first helical gear with good meshing performance, so that torque loss is avoided.

Preferably, the output gear is a second bevel gear meshed with the first bevel gear, the helix angles of the first bevel gear and the second bevel gear are the same, and the helix angle degrees are 5-55 degrees.

Therefore, through the change of the spiral degree, the motion stability of gear engagement is ensured, and the spiral angle is in a reasonable range between 5 degrees and 55 degrees.

Preferably, the diameter of the addendum circle of the second helical gear is larger than the diameter of the addendum circle of the first helical gear.

Therefore, the tooth top circle of the second bevel gear is set to be larger than the tooth top circle diameter of the first bevel gear, and a reasonable speed reduction effect is achieved.

Preferably, the output power of the driving device is 10W to 90W.

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

Preferably, the transmission ratio of the driving gear to the output gear is 2/1-100/1.

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

The utility model has the following beneficial effects:

1. the electronic lock has the advantages that the mechanism of the electronic lock is simpler through the crown gear and the 2-level speed reduction, the unlocking rate is high, the cost is saved, and the space of a charging seat is saved.

2. The electronic lock drives the lock rod to reciprocate through the screwing-in and unscrewing of the screw threads of the rod 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, through the increase of the contact ratio of the bevel gears, the bearing capacity of the gears is improved, and the service life of the gears is prolonged; meanwhile, the helical gear is compact in structure and can bring relatively ideal deceleration effect.

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 structural view of an electronic lock according to the present utility model.

Fig. 2 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-driving gear,

3-crown gear assembly, 31-crown gear, 32-first helical gear, 311-disc portion,

312-tooth part,

4-output gear assembly, 41-output gear, 42-rod, 43-first thread,

5-locking bar, 51-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, an electronic lock includes:

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

a drive gear 2 connected to the output shaft;

a crown gear assembly 3 engaged with the driving gear 2, and an axis of the crown gear assembly 3 is disposed vertically with respect to an axis of the driving gear 2;

an output gear assembly 4 comprising an output gear 41, a rod 42 coaxially arranged with said output gear 41, said output gear 41 being in engagement with said crown gear assembly 3, said rod 42 having a first thread 43; and

a lock lever 5;

the lock rod 5 has a second thread 51 matching with the first thread 43, and the output gear 41 drives the rod 42 to rotate, so as to drive the lock rod 5 to reciprocate.

In the present embodiment, the rotation direction of the driving device 1 is defined as the horizontal direction, and the rotation direction of the crown gear assembly is defined as the vertical direction.

An output shaft of the driving device 1 drives the driving gear 2 to rotate, the crown gear assembly 3 is meshed with the driving gear 2, the driving gear 2 rotates to drive the crown gear assembly 3 to rotate, and the axis of the crown gear assembly 3 is perpendicular to the axis of the driving gear 2; the output direction of the driving device 1 is changed through the crown gear assembly 3, and the horizontal rotation of the driving device 1 is changed into vertical rotation; by arranging the output gear assembly 4 to be meshed with the crown gear assembly 3, the rotation of the output gear assembly 4 realizes two-stage speed reduction;

the output gear assembly 4 comprises an output gear 41 and a rod piece 42, the rod piece 42 is arranged along the rotation axis of the output gear 41 in an extending mode, a first thread 43 is arranged on the rod piece 42, a second thread 51 is arranged on the lock rod 5, and the first thread 43 is matched with the second thread 51; when the crown gear assembly 3 drives the output gear 41 meshed with the crown gear assembly to rotate, the rod 42 rotates together with the output gear 41, so that the first thread 43 and the second thread 51 are meshed, and the lock rod 5 is driven to reciprocate.

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 by changing the output direction of the drive device 1 by the crown gear assembly 3, the lever 42 is provided on the output gear 41 to change the rotational movement to a linear movement, and in this embodiment, the movement direction of the lock lever 5 is perpendicular to the drive direction of the drive device 1.

As shown in fig. 1 and 2, the first screw 43 is an external screw, the lock lever 5 has a hollow cavity, and the second screw 51 is an internal screw provided at the inner periphery of the hollow cavity.

In the present embodiment, the first screw 43 is provided as an external screw, the second screw 51 is provided as an internal screw to be matched therewith, the lock lever 5 is provided to have a hollow cavity, and the second screw 51 is provided on the inner periphery of the cavity.

In another embodiment, the rod 42 may be provided with a hollow cavity, the first thread 43 being provided as an internal thread, and the second thread 51 of the lock rod 5 being provided as an external thread.

Preferably, the length of the external thread is greater than or equal to the preset movable distance of the lock rod 5, and less than or equal to the length of the hollow cavity.

Specifically, the length of the external thread of the rod 42 is determined by presetting the moving distance of the lock rod 5, the length of the external thread is greater than or equal to the preset moving distance of the lock rod 5, and meanwhile, the length of the external thread is less than or equal to the length of the middle cavity of the lock rod 5, and the preset moving distance can be met only if the two length limits are met, and the rod 42 drives the lock rod 5 to move.

In this embodiment, the rod 42 is a screw.

In another embodiment, the rod 42 is a round rod, and an external thread with a length that is sufficient is provided at one end of the round rod.

Specifically, the length of the internal thread may be equal to or less than the length of the external thread in the present embodiment as long as the matching external thread satisfies the moving distance of the lock lever 5.

Preferably, the lock lever 5 is one of a cylinder, a truncated cone, a cone, an elliptic cylinder, an elliptic truncated cone, an elliptic cone, a polygonal column, a polygonal table and a polygonal pyramid.

Specifically, the lock lever 5 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 one lock lever may be determined according to actual conditions.

In this embodiment, the lock lever 5 is a cylinder.

Preferably, the crown gear assembly 3 includes a crown gear 31 and a first helical gear 32, the crown gear 31 being meshed with the drive gear 2, the first helical gear 32 being meshed with the output gear 41.

Further, the crown gear assembly 3 includes a crown gear 31 and a first helical gear 32, in this embodiment, the crown gear 31 is horizontally disposed, the first helical gear 32 is vertically disposed, the first helical gear 32 is formed by an externally toothed helical gear, and the crown gear 31 and the first helical gear 32 may be integrally formed or may be configured in such a manner that they cannot rotate relative to the crown gear 31, such as a spline.

The crown gear 31 includes a disc portion 311 and a tooth portion 312 arranged along the circumferential direction of the disc portion 311, the tooth tip of the tooth portion 312 is vertically upward, and the first helical gear 32 is vertically disposed at the center portion of the upper surface of the disc portion 311, that is, the rotation axis of the crown gear 31 coincides with the rotation axis of the first helical gear 32.

In the present embodiment, the crown gear 31 and the first helical gear 32 are integrally formed.

Further, when the driving gear 2 drives the crown gear 31 to rotate, the first helical gear 32 rotates together with the crown gear 31, and the first helical gear 32 is meshed with the output gear assembly 4 to drive the output gear assembly 4 to rotate together.

Preferably, the output gear 41 is a second helical gear meshed with the first helical gear 32, the helical angles of the first helical gear 32 and the second helical gear are the same, and the number of helical angles is 5 ° to 55 °.

Specifically, when the driving device 1 drives the driving gear 2 to rotate, the driving gear 2 drives the crown gear assembly 3 meshed with the driving gear 2 to rotate, so as to change the output direction of the driving device 1; the second bevel gear meshes with the first bevel gear 32 and drives the lever 42 to rotate together.

More specifically, the second helical gear is composed of an externally toothed helical gear, the output gear 41 is composed of an externally toothed spur gear, and the second helical gear and the output gear 41 may be integrally formed or may be coaxially arranged so as not to rotate relative to the second helical gear, such as a spline.

In the present embodiment, the horizontal rotation axis is defined as an X-axis, the vertical rotation axis is defined as a Y-axis, the driving device 1 rotates around the X-axis, and the rotation is changed to the Y-axis rotation by the crown gear assembly 3, that is, the rotation axis of the first helical gear 32 is perpendicular to the rotation axis of the driving gear 2; because the increase of the contact ratio of the bevel gears can improve the bearing capacity of the gears, the service life of the gears is prolonged, meanwhile, the structure of the bevel gears is compact, and a relatively ideal deceleration effect can be brought, so that the first bevel gears 32 and the second bevel gears adopt bevel gear transmission.

The output gear 41 is a second helical gear engaged with the first helical gear 32, and the helical angles of the first helical gear 32 and the second helical gear are the same, and the helical angle is generally in a reasonable range between 5 ° and 55 °.

The helical gear has the main advantages that the stability of the motion of gear engagement is ensured through the change of the helical degree of the helical gear; because the increase of the contact ratio of the bevel gears can improve the bearing capacity of the gears, the service life of the gears is prolonged, meanwhile, the structure of the bevel gears is compact, and a relatively ideal deceleration effect can be brought, so that the first bevel gears 32 and the second bevel gears adopt bevel gear transmission.

In this embodiment, the helix angle angles of the first helical gear and the second helical gear are the same, and the helix angle degree is 30 °.

Preferably, the diameter of the addendum circle of the second helical gear is larger than the diameter of the addendum circle of the first helical gear 32.

In the present embodiment, the gear transmission is a reduction transmission, and the reduction ratio is determined according to the use condition, so the diameter of the addendum circle of the second helical gear is larger than that of the first helical gear 32.

Preferably, the output power of the driving device is 10W to 90W.

Specifically, the output power of the driving device 1 is 10W to 90W. 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 5 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 motors 1 with different output powers, other structures of the electronic lock are the same, each motor 1 continuously works for 1 minute, the times of completing the operation of the electronic lock are recorded, the times are more than or equal to 40 and are qualified, and the times are less than 40 and are unqualified. 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)	9	10	20	30	40	50	60	70	75	80	85	90	92
														Number of completions	39	40	45	52	57	62	68	75	79	85	94	95	98
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 10W, 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 10W, when the output power of the driving device 1 is greater than 90W, 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 10W to 90W. Specifically, 10W, 20W, 30W, 40W, 50W, 60W, 70W, 80W, 90W, etc. are possible.

Preferably, the transmission ratio of the driving gear 2 to the output gear 41 is 2/1 to 100/1.

Specifically, the transmission ratio of the drive gear 2 to the output gear 41 is 2/1 to 100/1. The transmission ratio of the driving device 1 to the output gear 41 needs a certain response time, if the transmission ratio is too small, abnormal noise is likely to occur due to inaccurate control, and the lock rod 5 will move only when a lot of corresponding time is needed, therefore, the inventor selects different transmission ratios of the driving gear 2 to the output gear 41 for testing, observes that the number of times of completion of locking or opening actions of the lock rod 5 in 1 minute is less than 40 times, and the abnormal noise is also unacceptable, and the result is shown in table 2.

Table 2: influence of different drive gear 2 and output gear 41 transmission ratios on electronic lock speed

Ratio of transmission

1.5/1

2/1

5/1

10/1

20/1

50/1

70/1

80/1

90/1

95/1

100/1

102/1

Number of completions

38

41

47

53

61

70

78

83

88

91

96

99

Whether or not to make abnormal sound

Whether or not

Is that

As can be seen from table 2, if the transmission ratio of the driving gear 2 to the output gear 41 is less than 2/1, the electronic lock is not qualified because the locking or unlocking operation completed within 1 minute is less than 40 times and the response speed is too slow; meanwhile, after the transmission ratio of the driving gear 2 to the output gear 41 is greater than 100/1, abnormal sound is generated in the electronic lock and is disqualified, so that the inventor selects the transmission ratio of the driving gear 2 to the output gear 41 to be 2/1-100/1.

The working principle of the electronic lock is described in detail below with reference to the accompanying drawings: the driving device 1 is started, the driving device 1 rotates positively to drive the driving gear 2 to rotate and drive the crown gear 31 meshed with the driving gear 2 to rotate, the first bevel gear 32 rotates together with the crown gear 31 and drives the second bevel gear to rotate, the rod piece 42 rotates together with the second bevel gear, and the second bevel gear drives the rod piece 42 to rotate so that the locking rod 5 extends out to realize locking; when the driving device 1 rotates reversely to drive the driving gear 2 to rotate and drive the crown gear 31 meshed with the driving gear 2 to rotate, the first bevel gear 32 rotates together with the crown gear 31 and drives the second bevel gear to rotate, and the rod piece 42 rotates together with the second bevel gear, so that the lock rod 5 retracts to realize unlocking;

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 driving gear is connected with the output shaft;

the output gear assembly comprises an output gear and a rod piece coaxially arranged with the output gear, the output gear is meshed with the crown gear assembly, and the rod piece is provided with a first thread; and

a lock lever;

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 of claim 1, wherein the first thread is an external thread, the locking bar has a hollow cavity, and the second thread is an internal thread disposed around the hollow cavity.

4. The electronic lock of claim 3, wherein the length of the 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 hollow cavity.

5. The electronic lock of claim 3, wherein the length of the internal thread is less than or equal to the length of the external thread.

6. The electronic lock of claim 5, wherein the locking bar is one of a cylinder, a truncated cone, a cone, an elliptic cylinder, an elliptic cone, a polygonal column, a polygonal stand, and a polygonal pyramid.

7. The electronic lock of claim 1, wherein the crown gear assembly includes a crown gear and a first helical gear, the crown gear meshing with the drive gear, the first helical gear meshing with the output gear.

8. The electronic lock of claim 7, wherein the output gear is a second helical gear meshed with the first helical gear, the helix angles of the first helical gear and the second helical gear are the same, and the helix angle degree is 5 ° to 55 °.

9. The electronic lock of claim 8, wherein a tip circle diameter of the second helical gear is greater than a tip circle diameter of the first helical gear.

10. The electronic lock of claim 1, wherein the output power of the driving means is 10W to 90W.

11. The electronic lock of claim 1, wherein a transmission ratio of the drive gear to the output gear is 2/1 to 100/1.