Electronic lock

Abstract

The utility model discloses an electronic lock which comprises a driving mechanism, a transmission mechanism, a lock rod and an unlocking rod, and the transmission mechanism comprises a transmission gear in transmission connection with the driving mechanism, a clutch gear in clutch connection with the transmission gear and a duplicate gear in meshed connection with the clutch gear and a rack on the lock rod respectively. The unlocking rod comprises a rod body, a pushing part and an unlocking rack which are connected in sequence, and the unlocking rack is located on a meshing path of the duplicate gear; the clutch gear comprises a catch wheel protruding in the radial direction, the pushing part is provided with a boss protruding gradually, when the unlocking rod is pulled to move horizontally, the boss pushes the catch wheel so that the clutch gear can move horizontally in the axial direction, finally the clutch gear is separated from the transmission gear, and after moving, the unlocking rack is meshed with the duplicate gear to drive the lock rod to move and unlock. The electronic lock is provided with the clutch gear in clutch connection with the transmission gear, the transmission structure is stable and reliable, and after the unlocking rack is meshed with the duplicate gear, the transmission gear and the clutch gear do not rotate in the process of driving the lock rod to move and unlocking.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, and more specifically, to an electronic lock. Background Art

[0002] As energy-saving and environmentally friendly new energy vehicles become an inevitable trend in the automotive industry, issues such as charging station construction and charging safety are key factors influencing the development of new energy vehicles. To prevent the charging gun from accidentally detaching from the vehicle while in use, and to protect the personal safety of the vehicle owner, the charging gun is equipped with an electronic lock that locks when inserted into the charging dock. When the charging gun is inserted into the dock, the electronic lock's locking rod extends and engages the charging gun, securing the connection and preventing it from accidentally falling off. When the charging gun needs to be removed after charging is completed, the locking rod automatically retracts, allowing the charging gun to be removed. If an abnormality occurs and manual unlocking is required, the locking rod is manually pulled back by the corresponding mechanical structure, allowing the charging gun to be removed from the dock. Traditional electronic locks manually unlock by directly pulling the locking rod back, which can result in excessive unlocking force. Alternatively, the unlocking rod can repeatedly move back and forth during use as the lock is locked and unlocked, significantly impacting product reliability and lifespan.

[0003] Therefore, a new solution is urgently needed in the prior art to solve the above problems. Utility Model Content

[0004] One purpose of the utility model is to provide a new technical solution for electronic locks to solve the problem that the manual unlocking of traditional electronic locks is achieved by directly pulling the lock rod back, which requires too much unlocking force for manual unlocking, and the unlocking rod of the electronic lock will continuously move back and forth as the electronic lock is locked and unlocked during use, which greatly affects the reliability and life of the product.

[0005] According to the utility model, an electronic lock is provided, including a driving mechanism, a transmission mechanism, a locking rod and an unlocking rod, the transmission mechanism including a transmission gear connected to the driving mechanism, a clutch gear connected to the transmission gear by clutch, and a double gear respectively meshed with the clutch gear and the rack on the locking rod, the unlocking rod including a rod body, a pushing portion and an unlocking rack connected in sequence, the unlocking rack being located on a meshing path with the double gear; the clutch gear also includes a radially protruding block wheel, the pushing portion has a gradually protruding boss, when the unlocking rod is pulled to translate, the boss pushes the block wheel to cause the clutch gear to translate axially and eventually disengage from the connection with the transmission gear, and after the unlocking rack moves, it meshes with the double gear, driving the locking rod to move and unlock.

[0006] Optionally, the double gear includes a driving wheel and a driven wheel arranged coaxially. The clutch gear meshes with the driving wheel, and the driven wheel meshes with a rack at the upper end of the lock rod.

[0007] After the clutch gear disengages from the transmission gear, the unlocking rack moves and meshes with the driven wheel to drive the lock rod to move and unlock.

[0008] Optionally, the clutch gear has a first gear that meshes with the driving wheel. The thickness of the first gear is the same as that of the driving wheel. When the clutch gear translates axially, the first gear disengages from the driving wheel.

[0009] Optionally, one of the central axes of the transmission gear and the clutch gear is configured as a spline, and the other is configured as a spline bushing.

[0010] When the clutch gear translates axially, the spline separates from the spline bushing and the transmission connection is released.

[0011] Optionally, the clutch gear further includes a spring sleeved on the central axis of the clutch gear. The spring is located on the other side of the spline or the spline bushing.

[0012] When the boss pushes the retaining wheel and the clutch gear translates axially, the spring is compressed to store energy. When the unlocking rod returns to its original position, under the elastic force of the spring, it translates in the opposite direction along the axial direction of the clutch gear to resume the connection with the transmission gear.

[0013] Optionally, it further includes a pushing member clamped between the rod body and the retaining wheel. The lower end of the pushing member is clamped on the central axis of the clutch gear. When the unlocking rod is pulled to translate, the boss pushes the pushing member, and the pushing member pushes the retaining wheel to make the clutch gear translate axially, finally disengaging from the transmission gear. After the unlocking rack moves, it meshes with the double gear to drive the lock rod to move and unlock.

[0014] Optionally, the lower end of the pushing member is provided with a slot with an opening, and the slot is snap-fitted on the central axis of the clutch gear through the opening.

[0015] Optionally, the pushing member is provided with a guiding surface matching the boss on one side of the rod body.

[0016] Optionally, it further includes a housing. The driving mechanism, the transmission mechanism, the double gear, at least part of the lock rod, the unlocking rod and the pushing member are arranged in the housing. The housing is provided with a lock hole for the lock rod to extend and retract.

[0017] Optionally, the rod body, the pushing part and the unlocking rack are integrally formed by an injection molding process.

[0018] The beneficial effects of the present utility model are as follows:

[0019] 1. The lock rod of the electronic lock of the present utility model includes a rod body, a pushing part and an unlocking rack that are sequentially connected. When the unlocking rod is pulled to translate, the convex platform on the pushing part pushes the retaining wheel on the clutch gear, causing the clutch gear to translate axially, disengaging from the transmission gear and disengaging from the double gear. This enables the movement of the double gear to be unrestricted by the driving mechanism, the transmission gear, and the clutch gear. After the clutch gear disengages from the double gear, the unlocking rack moves and meshes with the double gear, driving the lock rod to move and unlock, which has the advantages of small force required for manual unlocking and convenient manual unlocking.

[0020] 2. When the lock rod is driven by the driving mechanism to reciprocate between unlocking and locking under normal conditions of the electronic lock, the unlocking rod does not move; during the manual unlocking process of translating the unlocking rod, the driving mechanism does not work, and the transmission gear and the clutch gear do not rotate, improving the reliability and lifespan of the product.

[0021] Other features and advantages of the present utility model will become clear through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings incorporated in and forming a part of this specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0023] Figure 1 It is a schematic structural diagram of an electronic lock of the present utility model;

[0024] Figure 2 It is a schematic structural diagram of the spline and the spline bushing of the present utility model separated and the transmission connection released;

[0025] Figure 3 It is an exploded structural diagram of the pushing member and the transmission gear of the present utility model;

[0026] Figure 4 It is a schematic structural diagram of the unlocking rack and the double gear meshing of the present utility model;

[0027] Figure 5 It is a schematic structural diagram of the electronic lock with a housing of the present utility model.

[0028] The markings in the figures are as follows:

[0029] 1. Driving mechanism; 2. Locking rod; 21. Rack; 3. Unlocking rod; 31. Rod body; 32. Pushing part; 321. Boss; 33. Unlocking rack; 4. Transmission gear; 41. Spline bushing; 5. Clutch gear; 51. Retaining wheel; 52. Central shaft; 521. Spline; 53. First gear; 6. Double gear; 61. Driving wheel; 62. Driven wheel; 7. Pushing member; 71. Card slot; 72. Guiding surface; 8. Housing; 9. Spring. Detailed implementation manners

[0030] 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 arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation to the present invention and its applications or uses.

[0032] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification.

[0033] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0034] According to a first aspect of the present invention, as Figures 1-5 shown, an electronic lock is provided, including a driving mechanism 1, a transmission mechanism, a locking rod 2, and an unlocking rod 3. The transmission mechanism includes a transmission gear 4 drivingly connected to the driving mechanism 1, a clutch gear 5 in clutch connection with the transmission gear 4, and a double gear 6 respectively meshingly connected to the clutch gear 5 and the rack 21 on the locking rod 2. The unlocking rod 3 includes a rod body 31, a pushing part 32, and an unlocking rack 33 connected in sequence. The unlocking rack 33 is located on the meshing path with the double gear 6. The clutch gear 5 further includes a radially protruding retaining wheel 51. The pushing part 32 has a gradually protruding boss 321. When the unlocking rod 3 is pulled to translate, the boss 321 pushes the retaining wheel 51, so that the clutch gear 5 translates axially and finally disengages from the connection with the transmission gear 4. After the unlocking rack 33 moves, it meshes with the double gear 6 to drive the locking rod 2 to move and unlock.

[0035] As new energy vehicles that are energy-saving and environmentally friendly have become an inevitable trend in the development of the automotive industry, issues such as the construction of charging piles and charging safety are important influencing factors in the development of new energy vehicles. To prevent abnormal detachment between the charging gun and the vehicle when the charging gun is in use, and to protect the personal safety of the vehicle owner, the charging gun is equipped with an electronic lock that locks after being inserted into the charging socket. When the charging gun is inserted into the charging socket, the locking rod 2 of the electronic lock extends and locks the charging gun to ensure the connection between the charging gun and the charging socket and prevent the charging gun from falling off accidentally. When the charging is completed and the charging gun needs to be pulled out, the locking rod 2 retracts automatically, and the charging gun can be pulled out. If an abnormality occurs and manual unlocking is required, the charging gun can be pulled out of the charging socket by manually pulling the corresponding mechanical structure member to drive the locking rod 2 to retract. The manual unlocking of the traditional electronic lock is achieved by directly pulling the locking rod 2 to retract, which has the problem of excessive unlocking force required for manual unlocking. Or, the unlocking rod 3 of the electronic lock will reciprocate horizontally continuously during the electric locking and unlocking operations of the electronic lock, greatly affecting the reliability and service life of the product.

[0036] The unlocking rod 3 of the electronic lock of the present utility model includes a rod body 31, a pushing portion 32, and an unlocking rack 33 that are connected in sequence. When the unlocking rod 3 is pulled to translate it, the boss 321 on the pushing portion 32 pushes the blocking wheel 51 on the clutch gear 5, causing the clutch gear 5 to translate axially, disengaging from the connection with the transmission gear 4 and disengaging from the engagement with the double gear 6, so that the movement of the double gear 6 is not restricted by the driving mechanism 1, the transmission gear 4, and the clutch gear 5. After the clutch gear 5 disengages from the engagement with the double gear 6, the unlocking rack 33 moves and meshes with the double gear 6, driving the locking rod 2 to move and unlock, which has the advantages of small force required for manual unlocking and convenient manual unlocking.

[0037] Moreover, when the locking rod 2 is driven by the driving mechanism 1 to reciprocate between unlocking and locking under normal conditions of this electronic lock, the unlocking rod 3 does not move. During the manual unlocking process of translating the unlocking rod 3, the driving mechanism 1 does not work, and the transmission gear 4 and the clutch gear 5 do not rotate, improving the reliability and service life of the product.

[0038] In some embodiments, as Figure 2 and Figure 4 shown, the double gear 6 includes a driving wheel 61 and a driven wheel 62 arranged coaxially. The clutch gear 5 meshes with the driving wheel 61, and the driven wheel 62 meshes with the rack 21 at the upper end of the locking rod 2. After the clutch gear 5 disengages from the connection with the transmission gear 4, the unlocking rack 33 moves and meshes with the driven wheel 62 to drive the locking rod 2 to move and unlock.

[0039] The process of electric unlocking of this electronic lock: The driving mechanism 1 drives the clutch gear 5 to rotate coaxially by driving the transmission gear 4 to rotate. The clutch gear 5 drives the driving wheel 61 to rotate, and the driven wheel 62 rotates synchronously with the driving wheel 61 to drive the lock rod 2 to reciprocate to complete locking and unlocking.

[0040] The process of manual unlocking of this electronic lock: When the unlocking lever 3 is pulled to translate, the boss 321 on the pushing part 32 of the unlocking lever 3 pushes the blocking wheel 51 on the clutch gear 5, causing the clutch gear 5 to translate axially to connect with the transmission gear 4 and disengage from the driving wheel 61, so that the movement of the double gear 6 is not restricted by the driving mechanism 1, the transmission gear 4, and the clutch gear 5. After the clutch gear 5 disengages from the driving wheel 61, the unlocking rack 33 moves and meshes with the driven wheel 62, driving the lock rod 2 to move and unlock.

[0041] In some embodiments, as Figures 1-2 shown, the clutch gear 5 has a first gear 53 meshing with the driving wheel 61. The thickness of the first gear 53 is the same as that of the driving wheel 61. When the clutch gear 5 translates axially, the first gear 53 disengages from the driving wheel 61.

[0042] After the first gear 53 disengages from the driving wheel 61, the unlocking rack 33 moves and meshes with the driven wheel 62, driving the lock rod 2 to move and unlock, making the manual unlocking require less force and being convenient for manual unlocking.

[0043] In some embodiments, as Figure 2 shown, one of the central axes 52 of the transmission gear 4 and the clutch gear 5 is configured as a spline 521, and the other is configured as a spline 521 bushing 41. When the clutch gear 5 translates axially, the spline 521 separates from the spline 521 bushing 41 and the transmission connection is released.

[0044] The spline 521 cooperates with the spline 521 bushing 41, enabling the clutch gear 5 to be coaxially connected to the transmission gear 4. During the electric unlocking process, the driving mechanism 1 can drive the clutch gear 5 to rotate coaxially by driving the transmission gear 4, and then drive the lock rod 2 to reciprocate to complete locking and unlocking through the double gear 6.

[0045] When the clutch gear 5 translates axially, the spline 521 separates from the spline 521 bushing 41 and the transmission connection is released, causing the clutch gear 5 to disengage from the transmission gear 4 and from meshing with the double gear 6.

[0046] The movement of the double gear 6 is not restricted by the driving mechanism 1, the transmission gear 4, and the clutch gear 5. After the clutch gear 5 disengages from the double gear 6, the unlocking rack 33 moves and meshes with the double gear 6, driving the locking rod 2 to move and unlock, which has the advantages of small manual unlocking force and convenient manual unlocking.

[0047] In some embodiments, as Figure 2 shown, the clutch gear 5 further includes a spring 9 sleeved on the central shaft 52 of the clutch gear 5. The spring 9 is located on the other side of the spline 521 or the sleeve 41 of the spline 521. When the boss 321 pushes the retaining wheel 51 and the clutch gear 5 translates axially, the spring 9 is compressed to store energy. When the unlocking rod 3 returns to its original position, under the elastic force of the spring 9, it translates in the opposite axial direction of the clutch gear 5 to resume connection with the transmission gear 4.

[0048] Under the elastic force of the spring 9, the clutch gear 5 translates in the opposite axial direction to resume connection with the transmission gear 4. In this way, when the driving mechanism 1 is started, the driving mechanism 1 drives the transmission gear 4 to rotate, driving the clutch gear 5 to rotate. The rotation of the clutch gear 5 drives the locking rod 2 to lock and unlock through the double gear 6. The setting of the spring 9 can automatically make the clutch gear 5 resume connection with the transmission gear 4, without the need to design additional auxiliary pushing or pulling mechanisms, with a simple and compact structure and low cost.

[0049] In some embodiments, as Figure 1 and Figure 4 shown, it further includes a pusher 7 clamped between the rod body 31 and the retaining wheel 51. The lower end of the pusher 7 is clamped on the central shaft 52 of the clutch gear 5. When the unlocking rod 3 is pulled to translate, the boss 321 pushes the pusher 7, and the pusher 7 pushes the retaining wheel 51 to make the clutch gear 5 translate axially and finally disengage from the transmission gear 4. After the unlocking rack 33 moves and meshes with the double gear 6, it drives the locking rod 2 to move and unlock.

[0050] The boss 321 pushes the pusher 7, and the pusher 7 pushes the retaining wheel 51. The contact area between the pusher 7 and the retaining wheel 51 is large, making the thrust more stable. After the clutch gear 5 disengages from the driving wheel 61 and the unlocking with the double gear 6 is released, the unlocking rack 33 meshes with the driven wheel 62, driving the locking rod 2 to move and unlock, making the manual unlocking force small and the manual unlocking convenient.

[0051] In some embodiments, as Figure 3 shown, the lower end of the pusher 7 is provided with a slot 71 with an opening, and the slot 71 is snap-fitted on the central shaft 52 of the clutch gear 5 through the opening.

[0052] The pusher 7 is snap - connected to the central shaft 52 through a card slot 71 with an opening, so that the pusher 7 is relatively stably installed on the central shaft 52, enabling it to apply a more stable thrust to the retaining wheel 51, and being convenient for disassembly and repair during damage and maintenance.

[0053] In some embodiments, such as Figure 1 and Figure 3 shown, the pusher 7 is provided with a guiding surface 72 on one side of the rod body 31 that matches the boss 321.

[0054] The guiding surface plays a guiding role in guiding the pusher 7 during the process where the pusher 7 is pushed by the boss 321 to push the retaining wheel 51 on the clutch gear 5, causing the clutch gear 5 to translate axially and disengage from the transmission gear 4.

[0055] In some embodiments, such as Figure 5 shown, it further includes a housing 8. The driving mechanism 1, the transmission mechanism, the double - gear 6, at least part of the locking rod 2, the unlocking rod 3, and the pusher 7 are arranged inside the housing 8, and the housing 8 is provided with a locking hole for the locking rod 2 to extend and retract.

[0056] In some embodiments, the rod body 31, the pushing part 32, and the unlocking rack 33 are integrally formed by an injection - molding process.

[0057] By the injection - molding process, the rod body 31, the pushing part 32, and the unlocking rack 33 are integrally formed, making the overall structure of the unlocking rod 3 stable and extending the service life of the unlocking rod 3, thereby improving the service life of the electronic lock.

[0058] Although some 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 only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified 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, comprising a driving mechanism, a transmission mechanism, a lock rod and an unlocking rod, characterized in that the transmission mechanism includes a transmission gear drivingly connected to the driving mechanism, a clutch gear in clutch connection with the transmission gear, and a double gear respectively meshingly connected to the clutch gear and a rack on the lock rod; the unlocking rod includes a rod body, a pushing part and an unlocking rack connected in sequence, and the unlocking rack is located on the meshing path of the double gear; the clutch gear further includes a radially protruding retaining wheel, and the pushing part has a gradually protruding boss. When the unlocking rod is pulled to translate, the boss pushes the retaining wheel, so that the clutch gear translates axially and finally disengages from the transmission gear. After the unlocking rack moves, it meshes with the double gear to drive the lock rod to move and unlock.

2. The electronic lock according to claim 1, wherein the double gear includes a driving wheel and a driven wheel arranged coaxially. The clutch gear meshes with the driving wheel, and the driven wheel meshes with a rack at the upper end of the lock rod. After the clutch gear disengages from the transmission gear, the unlocking rack moves and meshes with the driven wheel to drive the lock rod to move and unlock.

3. An electronic lock according to claim 2, characterized in that, the clutch gear has a first gear meshing with the driving wheel, and the thickness of the first gear is the same as that of the driving wheel. When the clutch gear translates axially, the first gear disengages from the driving wheel.

4. An electronic lock according to claim 1, characterized in that, One of the central axes of the transmission gear and the clutch gear is configured as a spline, and the other is configured as a spline bushing. When the clutch gear translates axially, the spline separates from the spline bushing and the transmission connection is released.

5. An electronic lock according to claim 4, characterized in that, The clutch gear further includes a spring sleeved on the central axis of the clutch gear. The spring is located on the other side of the spline or the spline bushing. When the boss pushes the retaining wheel to make the clutch gear translate axially, the spring is compressed to store energy. When the unlocking rod returns to its original position, under the action of the spring force, it translates in the opposite direction of the axial direction of the clutch gear to resume connection with the transmission gear.

6. An electronic lock according to claim 4, characterized in that, It further includes a pushing member clamped between the rod body and the retaining wheel. The lower end of the pushing member is clamped on the central axis of the clutch gear. When the unlocking rod is pulled to translate, the boss pushes the pushing member, and the pushing member pushes the retaining wheel, so that the clutch gear translates axially and finally disengages from the transmission gear. After the unlocking rack moves, it meshes with the double gear to drive the lock rod to move and unlock.

7. An electronic lock according to claim 6, characterized in that, The lower end of the pushing member is provided with a slot with an opening, and the slot is clamped on the central axis of the clutch gear through the opening in a matching manner.

8. An electronic lock according to claim 6, characterized in that, The pushing member is provided with a guiding surface matching the boss on one side of the rod body.

9. An electronic lock according to claim 1, characterized in that, It further includes a housing. The driving mechanism, the transmission mechanism, the double gear, at least part of the lock rod, the unlocking rod and the pushing part are arranged in the housing, and the housing is provided with a lock hole for the lock rod to extend and retract.

10. An electronic lock according to claim 1, characterized in that, The rod body, the pushing part and the unlocking rack are integrally formed by an injection molding process.

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