CN218828202U

CN218828202U - Electronic lock

Info

Publication number: CN218828202U
Application number: CN202222781584.3U
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: 2023-04-07
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses an electronic lock relates to car technical field that charges, an electronic lock, include: 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 cam part driven by the output gear, and the output gear is meshed with the crown gear assembly; the lock rod is provided with a transmission part; the cam part is abutted against the transmission part 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, and the lock rod can obtain any preset motion law through the cam part with a simple and compact structure.

Description

Electronic lock

Technical Field

The utility model relates to a car technical field that charges, more specifically relates to an electronic lock.

Background

Locking means is usually installed at new energy automobile interface that charges to play the effect of fixed rifle that charges in the charging process. However, in the conventional driving device of the electronic lock, due to the mutual matching between the transmission mechanisms and the friction force generated by the linear motion changed from the circular motion to the linear motion, the electric energy and the motor torque are greatly consumed, which not only causes the battery of the electronic lock to have too short service life and is easy to generate noise, but also easily causes the wear of the micro motor gear set and the instability of the driving device of the electronic lock. In addition, because a transmission mechanism in the existing electronic lock needs multi-stage speed reduction, the electronic lock is generally large in size and cannot meet the requirements of the current new energy automobile charging device, and meanwhile, the movement of the lock rod of the existing electronic lock is single. Therefore, a new electronic lock solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can assemble in narrow and small space, simple structure, easy maintenance's electronic lock simultaneously.

An electronic lock, comprising:

a drive device including an output shaft that outputs torque;

a drive gear connected with the output shaft;

a crown gear assembly engaged with the driving gear, wherein the axis of the crown gear assembly is vertically arranged relative to the axis of the driving gear;

the output gear assembly comprises an output gear and a cam part driven by the output gear, and the output gear is meshed with the crown gear assembly; and

the lock rod is provided with a transmission part;

the cam part is abutted against the transmission part so as to drive the lock rod to reciprocate.

Therefore, the lock rod can obtain any preset motion law through the cam part with simple and compact structure.

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

Therefore, the output direction of the driving device is changed by adopting the crown gear, the reciprocating direction is parallel to the axial direction of the output shaft, and the loss of torque is avoided.

Preferably, the cam portion extends from the rotation axis direction of the output gear, and a circumferential outer surface of the cam portion has a curved section, and the curved section abuts against the transmission portion to drive the lock rod to reciprocate.

Therefore, the position of the cam part and the external profile of the cam part are determined, and the motion track requirement of the lock rod is met.

Preferably, the circumferential outer surface further comprises a straight line section, and the straight line section is connected with the curve section in a smooth transition mode.

Therefore, the structure of the cam part is simpler under the condition of meeting the requirement of the motion track of the cam part by limiting the specific structure of the cam part.

Preferably, the curve segment comprises at least two sub-curve segments with different radii of curvature.

Therefore, the lock rod is abutted to the transmission part of the lock rod through different curvature radiuses, so that the lock rod reaches a preset distance.

Preferably, the transmission part comprises a first abutting part and a second abutting part arranged opposite to the first abutting part; the cam portion is configured to: the first abutting part is abutted to drive the lock rod to move along a first direction, the second abutting part is abutted to drive the lock rod to move along a second direction, and the first direction is opposite to the second direction.

Therefore, the requirement of meeting the motion track of the cam part is met by limiting the abutting structure of the transmission part, and the motion direction of the lock rod is determined.

Preferably, the first abutting part extends outwards from the end face of the lock rod in the radial direction, and the curved sections abut against the first abutting part and the second abutting part respectively to drive the lock rod to perform reciprocating motion.

Thus, the specific positions of the first contact portion and the second contact portion are determined, and the movement start and stop point of the cam is determined.

Preferably, the transmission portion further includes a connection portion, and the connection portion is connected to the first abutting portion and the second abutting portion.

Therefore, the specific structure of the transmission part is determined, the movement requirement of the cam part is met, and the space is saved.

Preferably, the first abutting portion, the second abutting portion, and the connecting portion form a space in which the cam portion is accommodated.

Therefore, the position relation of the transmission part and the cam part is determined, the structure is simple, and the space is saved.

Preferably, there is a gap between the curved section and the connecting portion.

Therefore, the position relation between the cam part and the connecting part is determined, and the motion track of the cam part is satisfied.

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

Therefore, the output power can ensure enough output torque in the interval through calculation.

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

Thus, the transmission ratio can meet the requirement of the output speed in the interval through calculation.

The utility model discloses following beneficial effect has:

1. the utility model discloses an electronic lock makes electronic lock's mechanism simpler through crown gear and 2 grades of speed reductions, and the rate of unblanking is high, practices thrift the cost to save the charging seat space.

2. The utility model discloses an electronic lock passes through simple structure, the cam mechanism who gathers together, enables the locking lever rod to obtain arbitrary predetermined law of motion.

3. The electronic lock of the utility model improves the bearing capacity of the gear by increasing the contact ratio of the bevel gear, thereby prolonging the service life of the gear; meanwhile, the structure of the helical gear is compact, and relatively ideal speed reduction effect can be brought.

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

Drawings

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

Fig. 1 is an axonometric view of the electronic lock of the present invention.

Fig. 2 is a schematic structural view of the electronic lock rod of the present invention.

The figures are labeled as follows:

1-driving device, 2-driving gear,

3-crown gear assembly, 31-crown gear, 32-first bevel gear, 311-disk portion,

312-tooth part

4-output gear assembly, 41-second bevel gear, 42-cam part

5-lock rod, 51-transmission part, 52-first contact part, 53-second contact part, 54-connection part.

Detailed Description

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

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

Techniques, methods, and apparatus known to those 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 particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

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

a drive device 1 including an output shaft that outputs torque;

a drive gear 2 connected to the output shaft;

a crown gear assembly 3 engaged with the driving gear 2, wherein the axis of the crown gear assembly 3 is vertically arranged relative to the axis of the driving gear;

an output gear assembly 4, including an output gear 41 and a cam portion 42 driven by the output gear, wherein the output gear 3 is engaged with the crown gear assembly 3; and

a lock lever 5, the lock lever 5 being provided with a transmission portion 51;

the cam portion 42 abuts against the transmission portion 51 to drive the lock lever 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; the output gear assembly 4 is meshed with the crown gear assembly 3, so that the rotation of the output gear assembly 4 is realized, and two-stage speed reduction is realized; in order to ensure that the output structure is simple and compact and the lock rod obtains any preset motion law, the output mechanism adopts the cam part 42, the lock rod 5 is provided with the transmission part 51 matched with the cam part 42, and the cam part 42 pushes the transmission part 51 to reciprocate so as to realize the reciprocating motion of the lock rod 5; the cam part 42 rotates together with the output gear 41 and drives the transmission part 51 to reciprocate, so that the vertical rotation direction of the output gear assembly 4 is changed into the horizontal output direction, the effect of multi-stage speed reduction is achieved, the transmission mechanism of the electronic lock is simplified, and the output structure is also simplified.

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

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

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, and 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 a manner that they cannot rotate relative to the crown gear 31 by a spline or the like.

The crown gear 31 includes a disk portion 311 and a tooth portion 312 arranged along the circumferential direction of the disk portion 311, the tooth tip of the tooth portion 312 is directed vertically upward, and the first helical gear 32 is disposed vertically at the center of the upper surface of the disk portion 311, i.e., the rotational axis of the crown gear 31 coincides with the rotational 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 driving gear 2 rotates crown gear 31, first helical gear 32 rotates with crown gear 31, and output gear assembly 4 is rotated by meshing first helical gear 32 with output gear assembly 4.

In some embodiments, the output gear 41 is a second bevel gear meshing with the first bevel gear 32, and the helix angles α of the first bevel gear 32 and the second bevel gear are the same, typically in a reasonable range of 5 ° to 55 °.

The rotation of the driving device 1 around the X axis is changed to the rotation around the Y axis by the crown gear assembly 3, that is, the rotation axis of the first bevel gear 32 is perpendicular to the rotation axis of the driving gear 2, the first bevel gear 32 is meshed with the second bevel gear 41, and the output gear 42 is driven to rotate by the second bevel gear 41. The helical gear has the main advantages that the helical gear ensures the motion stability of gear engagement through the change of the helical degree of the helical gear; the bearing capacity of the gear can be improved due to the increase of the contact ratio of the helical gears, so that the service life of the gear is prolonged, and meanwhile, the helical gears are compact in structure and can bring relatively ideal speed reduction effect, so that the first helical gears 32 and the second helical gears are driven by the helical gears.

In this embodiment, the first helical gear and the second helical gear have the same helix angle, which is 30 °. The gear transmission adopts speed reduction transmission, and the speed reduction ratio is determined according to the use condition, so the addendum circle diameter of the second bevel gear 41 is larger than that of the first bevel gear 32.

It can be understood that the output direction of the driving device 1 is changed by the crown gear assembly 3, and the rotational motion is changed into the linear motion by the link mechanism 42 of the output gear assembly 4 matching with the moving part 51 on the lock lever 5, in this embodiment, the moving direction of the lock lever 5 is parallel to the driving direction of the driving device 1.

Preferably, the cam portion 42 extends from the rotation axis direction of the output gear 41, and the circumferential outer surface of the cam portion 42 has a curved section, and the curved section abuts against the transmission portion 51 to drive the lock rod 5 to reciprocate.

In the present embodiment, the cam portion 42 extends from the direction of the rotation axis of the output gear 41, the circumferential outer surface of the cam portion 42 is composed of a plurality of curved sections, and the plurality of curved sections are abutted against the transmission portion 51 of the lock lever 5 by the rotation of the cam portion 42, and the transmission portion 51 is pushed to reciprocate, so that the lock lever 5 reciprocates. Therefore, the lock rod can obtain any preset motion law through the cam mechanism with simple and compact structure.

Preferably, the circumferential outer surface further comprises a straight line section, and the straight line section is in smooth transition connection with the curve section.

In the present embodiment, the cam portion 42 is provided in a relatively simple structure, and the circumferential outer surface is constituted by a straight line section and a plurality of curved line sections, and the straight line section is smoothly transitionally connected with the curved line sections. Therefore, the cam part structure is simpler and the processing is convenient under the condition that the reciprocating motion of the lock rod 5 is satisfied.

Specifically, the curved line segment includes a plurality of curved line segments having different radii of curvature in order to satisfy the movement locus of the cam portion 42.

In this embodiment, the curve segment includes at least two sub-curve segments having different radii of curvature.

In another embodiment, the curvilinear section is semi-circular in shape.

Thus, the cam portion 42 drives the transmission portion 51 to a predetermined distance by the different curvature radii.

As shown in fig. 2, the transmission part 51 includes a first abutting part 52 and a second abutting part 53 disposed opposite to the first abutting part; the cam portion 42 is configured to: the first abutting part 52 abuts to drive the lock rod 5 to move along a first direction, and the second abutting part 53 abuts to drive the lock rod 5 to move along a second direction, wherein the first direction is opposite to the second direction.

Specifically, the transmission part 51 satisfies the movement locus of the cam part 42 by providing an abutting part, and in the present embodiment, the transmission part 51 is provided with two abutting parts, namely, a first abutting part 52 and a second abutting part 53 opposite to the first abutting part; the cam portion 42 drives the lock lever 5 to move in the first direction by abutting against the first abutting portion 52, and drives the lock lever to move in the second direction by abutting against the second abutting portion.

Herein, the extending direction of the lock lever 5 is defined as a first direction, the retracting direction of the lock lever 5 is defined as a second direction, and the extending and retracting are opposite directions to each other. The telescopic direction of the lock rod 5 is parallel to the axial direction of the output shaft.

Preferably, the first abutting portion 52 extends radially outward from the end face of the lock rod 5, and the curved sections abut against the first abutting portion 52 and the second abutting portion 53 respectively to drive the lock rod 5 to perform reciprocating motion.

Specifically, the first abutting portion 52 and the second abutting portion 53 are both rectangular parallelepipeds, and the first abutting portion 52 abuts against the cam portion 42 to drive the lock lever 5 to extend out, so that the first abutting portion 52 is arranged to extend outwards in the radial direction from the end face of the lock lever 5, the second abutting portion 53 is arranged opposite to the second abutting portion and abuts against the cam portion 42 to drive the lock lever 5 to retract, and the motion curve of the cam is determined by determining the specific positions and shapes of the first abutting portion and the second abutting portion.

Preferably, the transmission part 51 further includes a connection part 54, and the connection part 54 is connected to the first abutting part 52 and the second abutting part 53.

In the present embodiment, the connecting portion 54 has a plate shape, and the transmission portion 51 has a pi-shaped cross section.

In another embodiment, the connecting portion 54 is arc-shaped, and the cross section of the transmission portion 51 is U-shaped.

In other embodiments, the transmission part 51 may also be a structure with a spring mechanism, when the lock rod 5 is extended by external force, the spring mechanism is stretched, and when the external force is removed, the lock rod 5 resets the lock rod 5 by the elastic force of the spring mechanism.

Preferably, the first contact portion 52, the second contact portion 53, and the connecting portion 54 form a space for accommodating the cam portion 42.

In the present embodiment, the first abutment portion 52, the second abutment portion 53 and the connecting portion 54 form an accommodating space in which the cam portion 42 is accommodated and rotated.

In another embodiment, the transmission part 51 includes a spring mechanism, in which case the transmission part 51 does not need to form a space for accommodating the cam part 42, and the transmission part 51 may be composed of the first abutting part 52 and the spring mechanism, or the first abutting part 52, the connecting part 54 and the spring mechanism. The inventor can decide which structure to adopt according to the actual situation.

Specifically, in order to satisfy the requirement that the movement locus of the cam portion 42 realizes the reciprocating movement of the lock lever 5, a gap is provided between the curved section and the connecting portion 54, the cam portion 42 is prevented from abutting against the connecting portion 54, and the lock lever 5 moves away from a preset distance, so that the distance between the curved section and the connecting portion 54 is larger than the maximum curvature radius of the curved section.

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

Specifically, the output power of the drive device 1 is 10W to 90W. The output power of the driving device 1 determines the working speed of the electronic lock, and the higher the power is, the faster the electronic lock completes the work, and the lower the power is, the slower the electronic lock completes the work, and even the locking work of the locking rod 5 cannot be completed. In order to test the influence of the output power on the work of the electronic lock, the inventor conducts related tests, the testing method is that the motors 1 with different output powers are selected, other structures of the electronic lock are the same, each motor 1 continuously works for 1 minute, the number of times of finishing work of the electronic lock is recorded, the number of times is greater than or equal to 40, and the number is not greater than 40. If abnormal sound occurs during the operation of the electronic lock, the electronic lock is also regarded as unqualified. The results are shown in Table 1.

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

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 abnormal sound is present 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	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 opening and closing of the electronic lock is completed in 1 minute is less than 40, and the speed is too slow to be qualified, so the inventor selects the minimum power of the driving device 1 to be 10W, and when the output power of the driving device 1 is more than 90W, the electronic lock is influenced by the overall design, the speed enters the bottleneck period, no obvious improvement is caused, and meanwhile, abnormal sound also occurs, so the output power of the driving device 1 selected by the inventor is 10W to 90W. Specifically, the amount of the organic solvent may be 10W, 20W, 30W, 40W, 50W, 60W, 70W, 80W, 90W, or the like.

Specifically, the transmission ratio of the driving gear 2 to the output gear 42 is 2/1-100/1. The transmission ratio of the driving device 1 and the output gear 42 needs a certain response time, if the transmission ratio is too small, abnormal sound is easy to occur due to inaccurate control, and the lock rod 5 needs more corresponding time to move, so that the inventor selects different transmission ratios of the driving gear 2 and the output gear 42 to test, and observes the number of times of completing the locking or unlocking actions of the lock rod 5 within 1 minute, and is unqualified when the number of times is less than 40, and is unqualified when abnormal sound occurs, and the results are shown in table 2.

Table 2: influence of different drive gear 2 and output gear 42 transmission ratios on the speed of the electronic lock

Transmission ratio

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 abnormal sound is present or not

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 42 is less than 2/1, the electronic lock completes less than 40 times of locking or unlocking actions within 1 minute, and the response speed is too slow, so that the electronic lock is not qualified; meanwhile, after the transmission ratio of the driving gear 2 to the output gear 42 is larger than 100/1, the electronic lock will have abnormal sound and is unqualified, so the inventor selects the transmission ratio of the driving gear 2 to the output gear 42 to be 2/1-100/1.

Although certain specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention. 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 invention. The scope of the invention is defined by the appended claims.

Claims

1. An electronic lock, comprising:

a drive device including an output shaft that outputs torque;

a drive gear connected with the output shaft;

the crown gear assembly is meshed with the driving gear, and the axis of the crown gear assembly is vertically arranged relative to the axis of the driving gear;

the lock rod is provided with a transmission part;

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

3. The electronic lock of claim 1, wherein the cam portion extends from a direction of a rotational axis of the output gear, and a circumferential outer surface of the cam portion has a curved section that abuts the transmission portion to reciprocate the lock lever.

4. The electronic lock of claim 3, wherein the circumferential outer surface further comprises a straight section that is in smooth transition connection with the curved section.

5. The electronic lock of claim 3, wherein the curvilinear section comprises at least two sub-curvilinear sections having different radii of curvature.

6. The electronic lock of claim 4, wherein the transmission portion includes a first abutting portion, a second abutting portion disposed opposite the first abutting portion; the cam portion is configured to: with first butt portion butt in order to drive the locking lever moves along the first direction to and, with second butt portion butt in order to drive the locking lever moves along the second direction, the first direction with the second opposite direction.

7. The electronic lock of claim 6, wherein the first abutting portion extends radially outward from the end surface of the lock rod, and the curved section abuts against the first abutting portion and the second abutting portion respectively to drive the lock rod to reciprocate.

8. The electronic lock of claim 6, wherein the transmission portion further comprises a connecting portion that connects the first abutment portion and the second abutment portion.

9. The electronic lock of claim 8, wherein the first and second abutment portions and the connecting portion form a space that accommodates the cam portion.

10. The electronic lock of claim 9, wherein there is a gap between the curvilinear section and the connecting portion.

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

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