Electronic lock

Abstract

The utility model relates to an electronic lock which comprises a shell, a driving device, a transmission device and a lock rod, the driving device, the transmission device and the lock rod are arranged in the shell and sequentially connected, the transmission device comprises a cylinder connected with the driving device and a sleeve arranged outside the cylinder in a sleeving mode, and a closed curve groove is formed in the cylinder along the circumferential face of the cylinder; a roller device is arranged in the sleeve, and at least part of the roller device is movably embedded in the curve groove; the first rod end of the lock rod is connected with the sleeve, and the second rod end extends out of the shell. According to the technical scheme, the roller arranged in the sleeve is in rolling fit with the cylinder, so that the working environment of the transmission device is improved, the noise is low, and the transmission efficiency is high; meanwhile, due to the design of the roller device, the number of parts is small, fixing installation and maintenance are easy and convenient, manufacturing and after-sale cost is low, and the problems that in the working process of a transmission mechanism of an electronic lock, interference to the environment is large, maintenance and replacement of the parts are difficult, and cost is high are solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automobile charging, and in particular to an electronic lock. Background Art

[0002] An electronic lock is usually installed at the charging port of new energy vehicles to fix the charging gun during the charging process. In traditional electronic locks, a transmission mechanism is required between the lock rod and the motor to convert the rotational motion of the motor's output shaft into the linear reciprocating motion of the lock rod, and most of the transmission mechanisms are multi-stage gear transmissions. However, the gear transmission will produce impact when meshing, resulting in high noise and interference with the operating environment; in addition, due to the large load, the gears are susceptible to wear and damage, and it is difficult to maintain and replace gears and other components. Moreover, the processing accuracy of the gear transmission is high, and high-precision machine tools and tools are required, so the processing cost is relatively high. Utility Model Content

[0003] The disclosed embodiments provide an electronic lock to at least partially solve the problem that the transmission mechanism of the electronic lock has a significant impact on the environment during operation, and maintenance and replacement of components are difficult and costly.

[0004] The specific technical solutions provided by the embodiments of the present disclosure are as follows:

[0005] The present disclosure provides an electronic lock, comprising a housing, and a driving device, a transmission device, and a locking rod arranged in the housing and connected in sequence, wherein the driving device drives the transmission device to put the locking rod in a locked state or an unlocked state;

[0006] The transmission device comprises a cylinder connected to the driving device and a sleeve sleeved outside the cylinder, the cylinder is provided with a closed curved groove along its circumference; a roller device is provided inside the sleeve, and at least part of the roller device is movably embedded in the curved groove; the locking rod has a first rod end connected to the sleeve and a second rod end partially extending outside the housing;

[0007] During the rotation of the cylinder, the roller device is driven by the curved groove to drive the sleeve to reciprocate relative to the cylinder, and drive the locking rod to reciprocate relative to the housing.

[0008] Preferably, the plane where the central axis of the curved groove lies forms a set angle with the axis of the cylinder.

[0009] Preferably, the outer circumferential surface of the sleeve is provided with a guide groove parallel to the axial direction of the sleeve, and the shell is provided with a guide rail corresponding to and slidably fitting with the guide groove, and the guide rail is inserted into the guide groove to enable the sleeve to move axially relative to the shell.

[0010] Preferably, the length of the guide rail is greater than the length of the guide groove.

[0011] Preferably, the guide rail and the shell are integrally formed.

[0012] Preferably, the roller device includes a mounting seat and a roller, the mounting seat is arranged on the outer circumferential surface of the sleeve, the interior of the mounting seat has an accommodating cavity, and the accommodating cavity is connected to the interior of the sleeve; the roller is a spherical structure, at least a part of the roller is arranged in the accommodating cavity and rotatably cooperates with the mounting seat, and the other part is movably embedded in the curved groove and rolls along the curved groove.

[0013] Preferably, the roller device includes a mounting seat and a roller, the mounting seat is arranged on the outer circumferential surface of the sleeve, the interior of the mounting seat has an accommodating cavity, and the accommodating cavity is connected to the interior of the sleeve; the roller is a cylindrical structure and can rotate in the accommodating cavity, and a part of the cylindrical structure is located in the accommodating cavity, and the other part is located in the curved groove and rolls along the curved groove.

[0014] Preferably, the driving device has an output shaft, and a first threaded hole is provided at the end of the output shaft along its axial direction; the cylinder is coaxially sleeved on the output shaft and threadedly connected to the first threaded hole through a locking device to fix the cylinder to the output shaft.

[0015] The end of the sleeve facing the locking rod is a closed end, and a second threaded hole parallel to the axial direction of the sleeve is provided on the closed end; the outer wall of the first rod end is provided with an external thread matching the threaded hole, and the first rod end is inserted into the second threaded hole and threadedly connected with the second threaded hole to fix the locking rod and the sleeve.

[0016] Preferably, the electronic lock further comprises an upper cover covering the shell, and the shell and the upper cover are connected by laser welding, ultrasonic welding or screws.

[0017] The beneficial effects of the present disclosure are as follows:

[0018] The working environment of the transmission device is improved by the rolling cooperation between the roller and the cylinder arranged in the sleeve, which not only has a small friction coefficient and low noise, but also has high transmission efficiency. At the same time, the design of the roller device has few parts, a compact structure, simple and convenient fixed installation and maintenance, and low manufacturing and after-sales costs, which solves the problems that the transmission mechanism of the electronic lock has a large impact on the environment during operation, and maintenance and replacement of parts are difficult and costly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the overall assembly of the electronic lock in the embodiment of the present disclosure;

[0021] Figure 2 It is a structural schematic diagram of a transmission device in an embodiment of the present disclosure;

[0022] Figure 3 It is a schematic cross-sectional structure diagram of a roller device in an embodiment of the present disclosure that is a spherical structure;

[0023] Figure 4 It is a schematic cross-sectional structure diagram of a roller device in an embodiment of the present disclosure that is a cylindrical structure;

[0024] Figure 5 It is a structural schematic diagram of the locking rod in the extended state in the embodiment of the present disclosure;

[0025] Figure 6 Schematic diagram of the structure of the locking rod in the retracted state in the embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 1. Shell; 101. Guide rail; 2. Driving device; 201. Output shaft; 202. Locking device; 3. Transmission device; 301. Cylinder; 302. Sleeve; 303. Curved groove; 304. Roller device; 3041. Mounting seat; 3042. Roller; 3042a. Spherical structure; 3042b. Cylindrical structure; 3043. Bearing; 305. Guide groove; 4. Locking rod; 401. First rod end; 402. Second rod end; 403. Chamfered corner; 5. Upper cover. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present disclosure are described below in conjunction with the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure. In addition, the embodiments and features in the embodiments of the present disclosure may be combined with each other if no conflict occurs.

[0029] The present disclosure provides an electronic lock such as Figures 1 to 6As shown, it includes a housing 1 and a driving device 2, a transmission device 3 and a locking rod 4 which are arranged in the housing 1 and connected in sequence. The driving device 2 drives the transmission device 3 to put the locking rod 4 in a locked state or an unlocked state. The transmission device 3 includes a cylinder 301 connected to the driving device 2 and a sleeve 302 sleeved outside the cylinder 301. The cylinder 301 is provided with a closed curved groove 303 along its circumference; a roller device 304 is arranged in the sleeve 302, and at least part of the roller device 304 is movably embedded in the curved groove 303. The locking rod 4 has a first rod end 401 connected to the sleeve 302 and a second rod end 402 which partially extends out of the housing 1. During the rotation of the cylinder 301, the roller device 304 is driven by the curved groove 303 to drive the sleeve 302 to reciprocate relative to the cylinder 301, and drive the locking rod 4 to reciprocate relative to the housing 1.

[0030] In this embodiment, the housing 1 has a hollow accommodating chamber, and the driving device 2, the transmission device 3 and the locking rod 4 are all installed in the accommodating chamber. The housing 1 can provide a protective shell for the above devices to prevent the above devices from being damaged by external substances (such as water, dust, etc.). The driving device 2, the cylinder 301 and the sleeve 302 are coaxially arranged, and the circumference of the cylinder 301 is formed with a curved groove 303 that is closed and connected around the circumference at 360 degrees. The roller device 304 is arranged on the sleeve 302, and at least part of the roller device 304 passes through the outer wall of the sleeve 302 and extends into the sleeve 302 and is embedded in the curved groove 303. The locking rod 4 is arranged in a rod shape, and the axis of the locking rod 4 is parallel to the axis of the transmission device 3.

[0031] In actual use, the driving device 2 is used to provide power, the cylinder 301 can rotate synchronously with the driving device 2, and the roller device 304 rolls along the curved groove 303, thereby driving the sleeve 302 to reciprocate relative to the cylinder 301, and driving the locking rod 4 to reciprocate relative to the shell 1 to achieve locking or unlocking actions.

[0032] Through the above technical solution, the working environment of the transmission device 3 is improved through the rolling cooperation between the roller 3042 arranged in the sleeve 302 and the cylinder 301, which not only has a small friction coefficient and low noise, but also has high transmission efficiency; at the same time, the design of the roller device 304 has few components, a compact structure, simple and convenient fixed installation and maintenance, and low manufacturing and after-sales costs, which solves the problem that the transmission mechanism of the electronic lock has a large impact on the environment during operation, and maintenance and replacement of components are difficult and costly.

[0033] In some embodiments, Figure 2As shown, the plane where the central axis of the curved groove 303 is located is at a set angle with the axis of the cylinder 301. This arrangement helps to achieve smooth rolling of the roller device 304 in the curved groove 303, reduce friction and wear, increase the service life of the roller device 304, and further achieve the purpose of reducing costs and increasing efficiency.

[0034] It should be understood that different shapes of the curved grooves 303 can be designed to achieve different movement trajectories and speeds of the locking rod 4, thereby meeting the needs of different application scenarios.

[0035] In order to limit the movement direction of the sleeve 302 so that it can only reciprocate along the axial direction, refer to Figure 5 and Figure 6 In some embodiments, the outer circumferential surface of the sleeve 302 may be provided with a guide groove 305 parallel to the axial direction of the sleeve 302, and the housing 1 is provided with a guide rail 101 corresponding to and slidably matched with the guide groove 305, and the guide rail 101 is inserted into the guide groove 305 to enable the sleeve 302 to move axially relative to the housing 1. In addition, in order to ensure that the sleeve 302 can be fully extended or retracted, the length of the guide rail 101 can be further greater than the length of the guide groove 305, so as to ensure the stability of the sleeve 302 during the movement.

[0036] In some embodiments, the guide rail 101 and the housing 1 can be integrally formed. Such a design can reduce the number of parts, simplify the assembly process, reduce the difficulty of assembly, and also improve the stability and reliability of the overall structure.

[0037] In some embodiments, reference Figure 2 , Figure 3 , Figure 5 and Figure 6The roller device 304 may include a mounting seat 3041 and a roller 3042. The mounting seat 3041 is arranged on the outer circumference of the sleeve 302. The mounting seat 3041 has an accommodating cavity inside, and the accommodating cavity is arranged in communication with the inside of the sleeve 302. The roller 3042 is a spherical structure 3042a. At least a part of the roller 3042 is arranged in the accommodating cavity and rotates with the mounting seat 3041, and the other part is movably embedded in the curved groove 303 and rolls along the curved groove 303. The roller 3042 is a spherical structure 3042a. The corresponding accommodating cavity is arranged in a semi-arc structure matching the spherical structure 3042a. The cross section of the curved groove 303 is also arranged in a semi-arc structure. The upper half of the spherical structure 3042a is arranged in the accommodating cavity and rotates with the mounting seat 3041. The lower half of the spherical structure 3042a is arranged in the curved groove 303 and rolls along the curved groove 303. The installation of the mounting seat 3041 can fix the roller 3042 in the sleeve 302, thereby improving the reliability of the device. It should be noted that the diameter of the roller 3042 can be designed according to actual conditions, and no limitation is made here.

[0038] In some embodiments, Figure 4 As shown, the roller device 304 may further include a mounting seat 3041 and a roller 3042. The mounting seat 3041 is arranged on the outer circumferential surface of the sleeve 302. The mounting seat 3041 has an accommodating cavity inside, and the accommodating cavity is arranged in communication with the inside of the sleeve 302. The roller 3042 is a cylindrical structure 3042b and can rotate in the accommodating cavity. A part of the cylindrical structure 3042b is located in the accommodating cavity, and the other part is located in the curved groove 303 and rolls along the curved groove 303. The roller 3042 is a cylindrical structure 3042b, and the corresponding accommodating cavity is a cylindrical structure. In this embodiment, at least one bearing 3043 capable of bearing the radial load of the roller 3042 is arranged in the accommodating cavity. The bearing 3043 is sleeved on one end of the cylindrical structure 3042b, and the other end of the cylindrical structure 3042b is at least partially movably embedded in the curved groove 303 and rolls along the curved groove 303.

[0039] It should be noted that in other embodiments, the roller 3042 may also adopt other shapes as long as it can achieve rolling in the curved groove 303. Furthermore, the roller device 304 may be made of wear-resistant materials, such as stainless steel or ceramics, to improve its durability and service life.

[0040] In some embodiments, reference Figure 5 and Figure 6The drive device 2 has an output shaft 201, and the end of the output shaft 201 is provided with a first threaded hole along its axial direction. The cylinder 301 is coaxially sleeved on the output shaft 201, and is threadedly connected to the first threaded hole through a locking device 202 to fix the cylinder 301 to the output shaft 201. This arrangement can facilitate the installation, fixation, maintenance and replacement of parts and components, and improve work efficiency. It should be noted that the drive device 2 can use a motor as a driving source, and drive the cylinder 301 to rotate through the output shaft 201 of the motor. The locking device 202 can be a bolt, which is threadedly connected to the first threaded hole through the bolt to fix the cylinder 301, which has a simple structure, reliable connection, convenient use and low cost.

[0041] In some embodiments, reference Figure 5 and Figure 6 , the end of the sleeve 302 facing the locking rod 4 is a closed end, and a second threaded hole parallel to the axial direction of the sleeve 302 is provided on the closed end. The outer wall of the first rod end 401 is provided with an external thread that matches the second threaded hole, and the first rod end 401 is inserted into the second threaded hole and threadedly connected with the second threaded hole to fix the locking rod 4 and the sleeve 302. This arrangement facilitates the installation, fixation, maintenance and replacement between the locking rod 4 and the sleeve 302, further reduces the difficulty of assembly, and improves work efficiency. Furthermore, the end of the second rod end 402 is also provided with a chamfered corner 403. The setting of the chamfered corner 403 makes the edge of the second rod end 402 smoother and reduces the contact area, so that when it is inserted into the jack of the locking rod 4, it can reduce abrasion and wear, thereby improving the safety and service life of the locking rod 4.

[0042] In some embodiments, Figure 1 As shown, the electronic lock also includes an upper cover 5 covering the shell 1, and the shell 1 and the upper cover 5 are connected by laser welding, ultrasonic welding or screws. The upper cover 5 cooperates with the shell 1 to form a sealed space, which protects all devices in the shell 1 and improves the reliability of the device. In this embodiment, the upper cover 5 can be laser welded to the shell 1. Laser welding has a fast speed and high precision. During the welding process, the deformation between the shell 1 and the upper cover 5 is small, and the impact on the material is very small. In other embodiments, ultrasonic welding or screw connection can also be used for assembly, which is not limited here.

[0043] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present disclosure.

[0044] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Thus, if these modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to include these modifications and variations.

Claims

1. An electronic lock, comprising a housing, and a driving device, a transmission device and a locking rod arranged in the housing and connected in sequence, wherein the driving device drives the transmission device to put the locking rod in a locked state or an unlocked state; characterized in that: The transmission device comprises a cylinder connected to the driving device and a sleeve sleeved outside the cylinder, the cylinder is provided with a closed curved groove along its circumference; a roller device is provided inside the sleeve, and at least part of the roller device is movably embedded in the curved groove; the locking rod has a first rod end connected to the sleeve and a second rod end partially extending outside the housing; During the rotation of the cylinder, the roller device is driven by the curved groove to drive the sleeve to reciprocate relative to the cylinder, and drive the locking rod to reciprocate relative to the housing.

2. The electronic lock according to claim 1, characterized in that: The plane where the central axis of the curved groove is located forms a set angle with the axis of the cylinder.

3. The electronic lock according to claim 1, characterized in that: The outer peripheral surface of the sleeve is provided with a guide groove parallel to the axial direction of the sleeve, and the shell is provided with a guide rail corresponding to and slidably matched with the guide groove. The guide rail is inserted into the guide groove to enable the sleeve to move axially relative to the shell.

4. The electronic lock according to claim 3, characterized in that: The length of the guide rail is greater than the length of the guide groove.

5. The electronic lock according to claim 3, characterized in that: The guide rail and the shell are integrally formed.

6. The electronic lock according to claim 1, characterized in that: The roller device includes a mounting seat and a roller. The mounting seat is arranged on the outer circumferential surface of the sleeve. The interior of the mounting seat has a accommodating cavity, and the accommodating cavity is connected to the interior of the sleeve. The roller is a spherical structure. At least a part of the roller is arranged in the accommodating cavity and rotatably cooperates with the mounting seat, and the other part is movably embedded in the curved groove and rolls along the curved groove.

7. The electronic lock according to claim 1, characterized in that: The roller device includes a mounting seat and a roller, wherein the mounting seat is arranged on the outer circumferential surface of the sleeve, and the interior of the mounting seat has an accommodating cavity, and the accommodating cavity is communicated with the interior of the sleeve; the roller is a cylindrical structure and can rotate in the accommodating cavity, and a part of the cylindrical structure is located in the accommodating cavity, and the other part is located in the curved groove and rolls along the curved groove.

8. The electronic lock according to claim 1, characterized in that: The driving device has an output shaft, and a first threaded hole is arranged at the end of the output shaft along its axial direction; the cylinder is coaxially sleeved on the output shaft and is threadedly connected to the first threaded hole through a locking device to fix the cylinder to the output shaft.

9. The electronic lock according to claim 1, characterized in that: The end of the sleeve facing the locking rod is a closed end, and a second threaded hole parallel to the axial direction of the sleeve is provided on the closed end; the outer wall of the first rod end is provided with an external thread matching the threaded hole, and the first rod end is inserted into the second threaded hole and threadedly connected with the second threaded hole to fix the locking rod and the sleeve.

10. The electronic lock according to claim 1, characterized in that: The electronic lock also includes an upper cover covering the shell, and the shell and the upper cover are connected by laser welding, ultrasonic welding or screws.

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