An electronic lock

Abstract

This utility model discloses an electronic lock, including a housing with a mounting position. The side wall of the mounting position has an unlocking groove and a locking groove. A driving device is fixed inside the housing. An unlocking rod is slidably disposed within the mounting position, with one end connected to a locking rod and the other end connected to the output end of the driving device. A mounting cavity is laterally provided on the unlocking rod, and an elastic telescopic device is embedded in the mounting cavity, with at least two ends partially exposed outside the mounting cavity. The exposed portions of the elastic telescopic device can be pressed into or ejected from the mounting cavity. The driving device drives the unlocking rod to move axially, causing the locking rod to switch between an unlocked position and a locked position. When the locking rod moves to the unlocked position or the locked position, both ends of the elastic telescopic device elastically engage with the unlocking groove or the locking groove, respectively. This utility model solves the problems of the locking rod springing back when locking, causing the charging gun to fall off, and the locking rod springing back when unlocking, causing the charging gun to be unable to be pulled out.

Description

Technical Field

[0001] This utility model relates to the field of electronic lock technology, and more specifically, to an electronic lock. Background Technology

[0002] With the rise of new energy technologies, the electric vehicle industry has developed rapidly. The charging safety and reliability of electric vehicles have received attention from all sectors of the electric vehicle industry. Electronic locks provide a guarantee for the safety of electric vehicle charging. Electronic locks are important devices for locking the charging gun and the charging socket, realizing a secondary locking function for the charging system and ensuring the safety of the charging system. Currently, when traditional electronic locks are locked, the lock rod often springs back, causing the charging gun to fall off. When unlocking, the lock rod also springs back, making it impossible to pull out the charging gun. Therefore, it is urgent to design a new electronic lock structure to solve the above problems. Utility Model Content

[0003] One objective of this invention is to provide a new technical solution for electronic locks to solve the problems of the lock rod springing back when locking, causing the charging gun to fall off, and the lock rod springing back when unlocking, causing the charging gun to be unable to be pulled out.

[0004] According to a first aspect of this utility model, an electronic lock is provided, comprising: a housing having an internal mounting position, wherein the sidewall of the mounting position is provided with an unlocking groove and a locking groove spaced apart along an extending direction; a driving device fixed within the housing; an unlocking rod slidably disposed within the mounting position, one end connected to a locking rod and the other end connected to the output end of the driving device, the unlocking rod having a transversely arranged mounting cavity; and an elastic telescopic device embedded in the mounting cavity, with at least two ends partially exposed outside the mounting cavity, the exposed portions of the elastic telescopic device being press-in or ejected from the mounting cavity; wherein the driving device drives the unlocking rod to move axially, causing the locking rod to switch between an unlocked position and a locked position; when the locking rod moves to the unlocked position, the two ends of the elastic telescopic device elastically engage with the unlocking groove; when the locking rod moves to the locked position, the two ends of the elastic telescopic device elastically engage with the locking groove.

[0005] Optionally, there are two unlocking slots symmetrically distributed on both sides of the mounting position, and two locking slots symmetrically distributed on both sides of the mounting position.

[0006] Optionally, the front end of the unlocking rod is provided with a guide block, which plays a guiding role as the unlocking rod moves within the mounting position, and the mounting cavity extends laterally through the guide block.

[0007] Optionally, the elastic telescopic device includes two spheres and an elastic element between the two spheres.

[0008] Optionally, the elastic element is a compression spring, and the diameters of the two spheres are larger than the maximum outer diameter of the compression spring.

[0009] Optionally, the elastic telescopic device further includes a protective shell having a receiving cavity for accommodating the two spheres and the elastic element, the receiving cavity having openings at both ends for the two spheres to protrude at least partially, the openings being flush with the inlet end faces of the mounting cavity.

[0010] Optionally, the opening is a circular hole with a diameter smaller than that of the sphere.

[0011] Optionally, it also includes a transmission mechanism comprising a double gear consisting of a large gear and a small gear on the same axis. The large gear meshes with the output gear of the drive device, and the small gear consists of a base gear and an auxiliary gear with interlocking teeth connected coaxially, and meshes with the rack portion of the unlocking rod to eliminate transmission backlash.

[0012] Optionally, an elastic locking ring with a circumferential opening is provided between the base gear and the auxiliary gear. The elastic locking ring is nested in the mounting groove that is opened at both ends. When subjected to circumferential force, it generates elastic deformation to drive the two gears to misalign in order to compensate for backlash.

[0013] Optionally, the additional gear is axially fixed by being inserted into the insertion cavity of the base gear via a connecting shaft, and a snap-fit ​​structure is provided between the end of the connecting shaft and the inner wall of the insertion cavity to prevent the connecting shaft from axially disengaging from the insertion cavity.

[0014] According to one embodiment of this disclosure, the beneficial effects of this utility model are as follows:

[0015] This utility model patent features a horizontally arranged mounting cavity on the unlocking rod, into which an elastic telescopic device is embedded. A driving device drives the unlocking rod to move axially, causing the locking rod to switch between an unlocked and locked position. When the locking rod moves to the unlocked position, both ends of the elastic telescopic device elastically engage with the unlocking groove, positioning the locking rod in the unlocked position to prevent it from shifting, effectively solving the problem of the locking rod rebounding when the electronic lock is unlocked, causing the charging gun to be unable to be pulled out. When the locking rod moves to the locked position, both ends of the elastic telescopic device elastically engage with the locking groove, positioning the locking rod in the locked position to prevent it from shifting, effectively solving the problem of the locking rod rebounding when the electronic lock is locked, causing the charging gun to fall off, thus improving charging safety performance.

[0016] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0018] Figure 1 This is a three-dimensional structural diagram of the electronic lock of this utility model;

[0019] Figure 2 A three-dimensional structural diagram of the electronic lock unlocking rod of this utility model with an added elastic telescopic device;

[0020] Figure 3 This is a three-dimensional structural diagram of the guide block structure on the unlocking rod of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the elastic telescopic device of this utility model;

[0022] Figure 5 A schematic diagram of the structure when the two ends of the elastic telescopic device are elastically engaged in the unlocking slot;

[0023] Figure 6 This is a schematic diagram of the structure when the two ends of the elastic telescopic device are elastically engaged in the locking grooves.

[0024] Figure 7 A schematic diagram showing the structure of the locking groove position of the unlocking groove in this utility model;

[0025] Figure 8 This is a schematic diagram of the transmission structure of the drive device and transmission mechanism of this utility model;

[0026] Figure 9 This is an exploded view of the double gear of this utility model from one angle;

[0027] Figure 10 This is an exploded view of the double gear of this utility model from another angle;

[0028] Figure 11 This is a cross-sectional view of the assembly structure of the additional gear and the base gear of this utility model.

[0029] The diagram is marked as follows:

[0030] 1. Housing; 11. Mounting position; 111. Unlocking groove; 112. Locking groove; 2. Unlocking rod; 21. Rack part; 22. Guide block; 221. Mounting cavity; 3. Locking rod; 4. Ball; 5. Elastic element; 6. Protective shell; 61. Receiving cavity; 62. Opening; 71. Large gear; 72. Small gear; 721. Base gear; 7211. Mounting groove; 7212. Insertion cavity; 7213. Annular snap-fit ​​part; 722. Additional gear; 7221. Connecting shaft; 7222. Snap hook part; 8. Elastic snap-fit ​​ring; 9. Drive device; 91. Output gear. Detailed Implementation

[0031] 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 otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0033] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0034] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0035] This utility model provides an electronic lock, such as Figures 1-7 As shown, the device includes: a housing 1 with an internal mounting position 11, wherein the sidewall of the mounting position 11 is provided with an unlocking groove 111 and a locking groove 112 spaced apart along the extending direction; a driving device 9 fixed inside the housing 1; an unlocking rod 32 slidably disposed inside the mounting position 11, one end connected to a locking rod 3 and the other end connected to the output end of the driving device 9, wherein the unlocking rod 32 has a horizontally arranged mounting cavity 221; and an elastic telescopic device embedded in the mounting cavity 221, with at least two ends partially exposed outside the mounting cavity 221, the exposed parts of the elastic telescopic device being able to be pressed into or ejected from the mounting cavity 221; wherein the driving device 9 drives the unlocking rod 32 to move axially, causing the locking rod 3 to switch between an unlocked position and a locked position; when the locking rod 3 moves to the unlocked position, the two ends of the elastic telescopic device elastically engage with the unlocking groove 111; when the locking rod 3 moves to the locked position, the two ends of the elastic telescopic device elastically engage with the locking groove 112.

[0036] With the rise of new energy technologies, the electric vehicle industry has developed rapidly. The charging safety and reliability of electric vehicles have received attention from all sectors of the electric vehicle industry. Electronic locks provide a guarantee for the safety of electric vehicle charging. Electronic locks are important devices for locking the charging gun and the charging socket, realizing a secondary locking function for the charging system and ensuring the safety of the charging system. Currently, when locking the traditional electronic lock, the locking rod 3 often springs back, causing the charging gun to fall off. When unlocking, the locking rod 3 also springs back, making it impossible to pull out the charging gun.

[0037] This utility model patent features a horizontally arranged mounting cavity 221 on the unlocking rod 32. An elastic telescopic device is embedded in the mounting cavity 221. The driving device 9 drives the unlocking rod 32 to move axially, causing the locking rod 3 to switch between the unlocking and locking positions. When the locking rod 3 moves to the unlocking position, both ends of the elastic telescopic device elastically engage with the unlocking groove 111, positioning the locking rod 3 in the unlocking position and preventing it from moving around. This effectively solves the problem that when the electronic lock is unlocked, the locking rod 3 rebounds, causing the charging gun to be unable to be pulled out. When the locking rod 3 moves to the locking position, both ends of the elastic telescopic device elastically engage with the locking groove 112, positioning the locking rod 3 in the locking position and preventing it from moving around. This effectively solves the problem that when the electronic lock is locked, the locking rod 3 rebounds, causing the charging gun to fall off, thus improving charging safety performance.

[0038] In some embodiments, such as Figure 7 As shown, there are two unlocking slots 111 symmetrically distributed on both sides of the mounting position 11, and two locking slots 112 symmetrically distributed on both sides of the mounting position 11.

[0039] The unlocking groove 111 and locking groove 112, which are symmetrically distributed on both sides of the mounting position 11, can be firmly engaged with the elastic telescopic device to position the locking rod 3 and prevent it from springing back.

[0040] In some embodiments, such as Figure 2 As shown, the front end of the unlocking rod 32 is provided with a guide block 22. The guide block 22 plays a guiding role in the process of the unlocking rod 32 moving within the mounting position 11. The mounting cavity 221 extends laterally through the guide block 22.

[0041] In some embodiments, such as Figure 4 As shown, the elastic telescopic device includes two spheres 4 and an elastic element 5 between the two spheres 4.

[0042] The elastic element 5 provides elastic force to the two balls 4, so that the exposed part of the ball 4 of the elastic telescopic device can be pressed into or ejected from the mounting cavity 221. Pressing into the mounting cavity 221 can avoid interference with the side wall of the mounting position 11. When ejecting from the mounting cavity 221, it engages with the unlocking groove 111 or the locking groove 112 when the unlocking rod 32 moves to the unlocking or locking position.

[0043] In some embodiments, such as Figure 4 As shown, the elastic element 5 is a compression spring, and the diameter c of the two spheres 4 is greater than the maximum outer diameter a of the compression spring.

[0044] The diameter c of the two spheres 4 is greater than the maximum outer diameter a of the compression spring. This allows the two spheres 4 to be fixed at both ends of the compression spring, preventing them from falling into the compression spring. This ensures that the compression spring provides elastic force to the two spheres 4 in real time, enabling the spheres 4 to be pressed into or ejected from the mounting cavity 221 during the movement of the release rod, and to smoothly engage with the unlocking groove 111 and the locking groove 112.

[0045] In some embodiments, such as Figure 4 As shown, the elastic telescopic device further includes a protective shell 6, which has a receiving cavity 61 for accommodating the two spheres 4 and the elastic element 5. The receiving cavity 61 has openings 62 at both ends for the two spheres 4 to protrude at least partially, and the openings 62 are flush with the inlet end faces of the mounting cavity 221.

[0046] The protective shell 6 protects the elastic telescopic device, preventing the ball 4 and elastic element 5 from shifting or being damaged during repeated movement of the unlocking lever 32, thus extending the overall service life of the elastic telescopic device.

[0047] In some embodiments, such as Figure 4 As shown, the opening 62 is a circular hole with a diameter b smaller than the diameter c of the sphere 4.

[0048] The diameter b of the opening 62 is smaller than the diameter c of the sphere 4, which can confine the sphere 4 within the receiving cavity 61 and also has the function of exposing part of the sphere 4.

[0049] In some embodiments, such as Figure 8 As shown, it also includes a transmission mechanism, which includes a double gear consisting of a large gear 71 and a small gear 72 on the same axis. The large gear 71 meshes with the output gear 91 of the drive device 9. The small gear 72 is composed of a base gear 721 and an auxiliary gear 722 with interlocking teeth connected coaxially, and meshes with the rack portion 21 of the unlocking rod 32 to eliminate transmission backlash.

[0050] When the electronic lock lever 3 is locked and unlocked, the gear gap is large and the lever 3 moves a lot, which causes the charging gun to fall off or become impossible to pull out. This utility model achieves the problem of misaligned teeth by setting a base gear 721 and an auxiliary gear 722 with interlocked teeth, eliminating gear gap, preventing the lever 3 from moving, and positioning the lever 3 in the locked and unlocked positions. This effectively prevents the charging gun from falling off or becoming impossible to pull out after charging and after charging is completed.

[0051] In some embodiments, such as Figures 9-10 As shown, an elastic locking ring 8 with a circumferential opening 62 is provided between the base gear 721 and the auxiliary gear 722. The elastic locking ring 8 is nested in the mounting groove 7211 that is opened at both ends. When subjected to circumferential force, it generates elastic deformation to drive the two gears to misalign in order to compensate for backlash.

[0052] In some embodiments, such as Figure 11 As shown, the additional gear 722 is inserted into the insertion cavity 7212 of the base gear 721 via the connecting shaft 7221 to form an axial fixation. A snap-fit ​​structure is provided between the end of the connecting shaft 7221 and the inner wall of the insertion cavity 7212 to prevent the connecting shaft 7221 from axially disengaging from the insertion cavity 7212.

[0053] The snap-fit ​​structure can fix the additional gear 722 onto the base gear 721. Specifically, it consists of an annular snap-fit ​​part 7213 that protrudes radially inward from the inner wall of the insertion cavity 7212 and a snap hook part 7222 that protrudes radially outward from the end of the connecting shaft 7221. After the connecting shaft 7221 extends into the insertion cavity 7212, the snap hook part 7222 passes over the annular snap-fit ​​part 7213 and snaps with the front end of the annular snap-fit ​​part 7213, thus fixing the additional gear 722 onto the base gear 721.

[0054] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An electronic lock, characterized in that: include: The housing has an internal mounting position, and the side wall of the mounting position has an unlocking groove and a locking groove spaced apart along the extending direction. The drive unit is fixed inside the housing; The unlocking rod is slidably disposed in the mounting position, with one end connected to the locking rod and the other end connected to the output end of the driving device. A mounting cavity is provided laterally on the unlocking rod. An elastic telescopic device is embedded in the mounting cavity, with at least two ends partially exposed outside the mounting cavity. The exposed portions of the elastic telescopic device can be pressed into or ejected from the mounting cavity. The driving device drives the unlocking rod to move axially, thereby switching the locking rod between the unlocked position and the locked position. When the locking rod moves to the unlocked position, both ends of the elastic telescopic device elastically engage with the unlocking groove; When the locking rod moves to the locked position, both ends of the elastic telescopic device elastically engage with the locking groove.

2. The electronic lock according to claim 1, characterized in that: There are two unlocking slots, symmetrically distributed on both sides of the mounting position, and two locking slots, symmetrically distributed on both sides of the mounting position.

3. The electronic lock according to claim 1, characterized in that: The front end of the unlocking rod is provided with a guide block, which plays a guiding role as the unlocking rod moves within the mounting position, and the mounting cavity extends laterally through the guide block.

4. The electronic lock according to claim 1, characterized in that: The elastic telescopic device includes two spheres and an elastic element between the two spheres.

5. The electronic lock according to claim 4, characterized in that: The elastic element is a compression spring, and the diameters of the two spheres are larger than the maximum outer diameter of the compression spring.

6. The electronic lock according to claim 4, characterized in that: The elastic telescopic device further includes a protective shell having a receiving cavity for accommodating the two spheres and the elastic element, the receiving cavity having openings at both ends for at least partially protruding the two spheres, the openings being flush with the inlet end faces of the mounting cavity.

7. The electronic lock according to claim 6, characterized in that: The opening is a circular hole, the diameter of which is smaller than the diameter of the sphere.

8. The electronic lock according to claim 1, characterized in that: It also includes a transmission mechanism comprising a double gear consisting of a large gear and a small gear on the same axis. The large gear meshes with the output gear of the drive device, and the small gear consists of a base gear and an auxiliary gear connected coaxially with interlocking teeth, and meshes with the rack portion of the unlocking rod to eliminate transmission backlash.

9. The electronic lock according to claim 8, characterized in that: An elastic locking ring with a circumferential opening is provided between the base gear and the auxiliary gear. The elastic locking ring is nested in the mounting groove that is opened at both ends. When subjected to circumferential force, it generates elastic deformation to drive the two gears to misalign in order to compensate for backlash.

10. The electronic lock according to claim 9, characterized in that: The additional gear is inserted into the insertion cavity of the base gear through a connecting shaft to form an axial fixation. A snap-fit ​​structure is provided between the end of the connecting shaft and the inner wall of the insertion cavity to prevent the connecting shaft from axially disengaging from the insertion cavity.

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