A European standard charging socket electronic lock capable of reducing signal interference

Abstract

The application provides a European standard charging base electronic lock capable of reducing signal interference, which comprises a lock box and a lock cover. A rotating shaft is arranged in the lock box. The rotating shaft drives a lock rod to move up and down in the height direction of the lock box through a first linkage structure. An electric drive assembly is further arranged in the lock box. The electric drive assembly comprises a circuit board, a motor arranged on the circuit board and a micro switch arranged on the circuit board. The motor is in circuit communication with the circuit board, and the micro switch is in circuit communication with the circuit board. A contact block is arranged on the rotating shaft. The contact block triggers the micro switch with the rotation of the rotating shaft. The motor drives the rotating shaft to rotate through a second linkage structure. The micro switch and the motor are integrated on the same circuit board, so that the electromagnetic interference caused by the long electric wire connection across the rotating shaft is eliminated.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle charging dock technology, and specifically to a European standard charging dock electronic lock that reduces signal interference. Background Technology

[0002] The European standard electronic lock for new energy vehicle charging docks is a key component for locking and unlocking the charging gun and charging dock. In existing technology, such as the European standard electronic lock for new energy vehicle charging docks disclosed in publication number CN223109370U, the technical solution includes a housing, a motor housed within the housing, a retractable locking rod located at the front end of the housing, and an emergency unlocking mechanism located at the rear end of the housing. The motor's output shaft meshes with a drive shaft gear via bevel gears. The locking rod is vertically positioned at the front end of the housing, and a vertically positioned rack is connected to its rear end. The drive shaft gears mesh with the rack via central sector teeth. A micro switch is located on one side of the front end of the housing, and a cam is fitted at the end of the drive shaft gears to trigger the micro switch. In this solution, the motor drives the drive shaft to rotate via bevel gears. The sector teeth on the drive shaft drive the rack on the locking rod to move, thereby extending and retracting the locking rod. Simultaneously, the cam at the end of the drive shaft rotates with the drive shaft and triggers the micro switch to determine the locking state. However, in this prior art, the micro switch is located on one side of the front end of the housing, separate from the motor on both sides of the drive shaft. The micro switch needs to be connected to the wiring terminal at the tail end of the motor via a long wire that crosses the drive shaft area to achieve signal transmission and power supply consistency.

[0003] The aforementioned long wire connection method across the pivot has obvious shortcomings in practical applications. On the one hand, the long wire will inevitably bend in many places within the limited space inside the housing, which can easily lead to reliability issues such as wire sheath wear or internal core breakage during long-term use. On the other hand, the long wire, like an antenna, is more likely to absorb electromagnetic interference generated by other electrical devices inside the vehicle, causing the micro switch to receive incorrect switching signals, thereby affecting the accuracy and reliability of the electronic lock's locking status judgment. Summary of the Invention

[0004] This invention proposes a European standard charging dock electronic lock to reduce signal interference. It solves the problem that in existing European standard charging dock electronic locks that reduce signal interference, the micro switch is connected to the motor tail terminal by a long wire that crosses the shaft, which makes the signal transmission susceptible to electromagnetic interference and poses a risk of bending in the wiring harness layout.

[0005] The technical solution of this invention is implemented as follows:

[0006] A European standard charging dock electronic lock with reduced signal interference includes a lock box and a lock cover. The lock box is provided with a rotatable shaft. The shaft acts on the lock rod through a first linkage structure to drive the lock rod to move up and down in the height direction of the lock box.

[0007] The lock box is also equipped with an electric drive assembly, which includes a circuit board, a motor mounted on the circuit board, and a micro switch mounted on the circuit board. The motor is connected to the circuit board, and the micro switch is connected to the circuit board. A contact block is provided on the rotating shaft. The contact block triggers the micro switch as the rotating shaft rotates. The motor drives the rotating shaft to rotate through a second linkage structure.

[0008] Furthermore, the micro switch and the motor are mounted on the same side of the rotating shaft on the circuit board.

[0009] Furthermore, the inner bottom wall of the lock box is provided with a partition, which is located between the motor and the micro switch.

[0010] Furthermore, the circuit board is provided with positioning holes, and the inner bottom wall of the lock box is provided with positioning protrusions, which pass through the positioning holes.

[0011] Furthermore, the second linkage structure includes a first bevel gear disposed at the output end of the motor and a second bevel gear disposed on the rotating shaft, wherein the first bevel gear and the second bevel gear mesh with each other.

[0012] Furthermore, the first linkage structure includes a toothed structure one disposed on the rotating shaft and a toothed structure two disposed on one side of the locking rod, wherein the toothed structure one and the toothed structure two mesh with each other.

[0013] Furthermore, the rotating shaft is also provided with an inclined block, and a slide bar is slidably arranged on the inner side of the lock box. The slide bar has a traction port, and the inclined block passes through the traction port. A spring is provided on one side of the slide bar, and the other side of the spring abuts against the inner wall of the lock box. A pull cable is provided on one side of the slide bar, and the pull cable passes through the spring and extends to the outside of the lock box.

[0014] Furthermore, the angle of the inclined block faces away from the micro switch, and the side where the angle of the inclined block faces abuts against the inner wall of the traction port.

[0015] Furthermore, a cable rod is sleeved on the outside of the cable, and the cable slides through the cable rod and extends out of the end of the cable rod.

[0016] Furthermore, a positioning chamber is provided in one corner of the lock box, and a positioning boss is provided in the positioning chamber. A stepped hole is opened in the positioning boss. One side of the stepped hole is connected to the interior of the lock box, and the other side is connected to the exterior of the lock box. The end of the cable rod passes through the stepped hole and abuts against the stepped surface of the stepped hole. An annular groove is opened on the exterior of the cable rod. A U-shaped insert is provided at the bottom of the lock cover. The U-shaped insert extends into the positioning chamber and is embedded in the annular groove.

[0017] The beneficial effects of the technical solution provided in this application are as follows:

[0018] 1. This application, by placing the motor and micro switch together on the circuit board and connecting them to the circuit board circuit, and using the contact block on the rotating shaft to directly trigger the micro switch as the shaft rotates, eliminates the need for the signal transmission of the micro switch to be connected to the motor tail terminal by a long wire crossing the rotating shaft. This fundamentally eliminates the wiring hazards caused by the long wire bending in multiple places inside the lock box due to crossing the rotating shaft area, and also avoids the long wire absorbing electromagnetic interference from other electrical devices inside the vehicle like an antenna.

[0019] 2. This application further shortens the signal transmission path by placing the micro switch and motor on the same side of the rotating shaft on the circuit board. The partition on the bottom wall of the lock box further isolates them, suppressing electromagnetic interference to the micro switch during motor operation. Simultaneously, the positioning holes on the circuit board and the positioning protrusions on the bottom wall of the lock box are fitted together, ensuring the installation accuracy of the circuit board and the accuracy of the trigger position between the micro switch and the contact block. Furthermore, the cooperative structure of the inclined block, slider, spring, and cable on the rotating shaft provides a reliable emergency unlocking function. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0022] Figure 2 This is an exploded view of the present invention;

[0023] Figure 3 This is a top-view perspective view of the interior of the lock box and the lock cover of the present invention;

[0024] Figure 4 An exploded view of the internal components of the lock box;

[0025] Figure 5 This is a schematic diagram of the cross-section of the lock box.

[0026] In the diagram: 1 Lock box, 11 Sealing groove, 12 Positioning protrusion, 13 Partition, 14 Positioning chamber, 15 Positioning boss, 16 Step hole, 2 Rotating shaft, 21 Inclined block, 22 Contact block, 23 Bevel gear II, 24 Tooth structure I, 3 Locking rod, 31 Tooth structure II, 4 Sliding bar, 41 Traction port, 42 Cable, 43 Spring, 44 Cable rod, 441 Annular groove, 5 Electric drive assembly, 51 Circuit board, 512 Positioning hole, 52 Motor, 521 Bevel gear I, 53 Micro switch, 6 Lock cover, 61 Sealing rib, 62 U-shaped insert. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1 to 5 As shown, this application provides a European standard charging dock electronic lock with reduced signal interference, including a lock box 1 and a lock cover 6. The lock box 1 serves as the mounting base for the entire electronic lock, and its interior has a receiving space for accommodating various moving parts and electrical components. The lock cover 6 closes onto the top of the lock box 1, providing a sealing and protection function for the components inside the lock box 1.

[0029] like Figure 1 and Figure 3 As shown, a sealing groove 11 is provided on the top of the lock box 1. The sealing groove 11 extends continuously along the periphery of the top of the lock box 1, forming a closed annular groove structure. Correspondingly, a sealing rib 61 is provided on the bottom of the lock cover 6. The shape of the sealing rib 61 is adapted to the shape of the sealing groove 11. When the lock cover 6 is closed on the lock box 1, the sealing rib 61 is embedded in the sealing groove 11. The two cooperate with each other to form a sealing structure, thereby preventing external moisture or dust from entering the interior of the lock box 1 from the seam between the lock box 1 and the lock cover 6.

[0030] like Figures 2 to 5 As shown, a rotating shaft 2 is installed inside the lock box 1, and the rotating shaft 2 is rotatably installed inside the lock box 1. The two ends of the rotating shaft 2 are supported on the two opposite inner side walls of the lock box 1 by bearings or shaft hole structures, so that the rotating shaft 2 can rotate freely around its own axis. The extension direction of the rotating shaft 2 is parallel to the width direction of the lock box 1, that is, the rotating shaft 2 is arranged laterally inside the lock box 1.

[0031] like Figure 2 and Figure 4As shown, a locking rod 3 is also provided inside the lock box 1, extending along the height direction of the lock box 1. The locking rod 3 is constrained to only be able to perform linear reciprocating motion in the height direction of the lock box 1, that is, the locking rod 3 only moves up and down. The upper end of the locking rod 3 extends through the top of the lock box 1 and upwards, while the lower end of the locking rod 3 can extend downwards to the bottom outside of the lock box 1 to lock the corresponding part of the charging base.

[0032] like Figure 2 and Figure 4 As shown, the rotating shaft 2 acts on the locking rod 3 through a first linkage structure to drive the locking rod 3 to move up and down in the height direction of the lock box 1. Specifically, the first linkage structure includes a toothed structure 24 and a toothed structure 31. The toothed structure 24 is disposed on the outer peripheral wall of the rotating shaft 2, and is located at the middle shaft section of the rotating shaft 2. The toothed structure 31 is disposed on one side wall of the locking rod 3, and extends along the height direction of the locking rod 3. The toothed structure 24 and the toothed structure 31 mesh with each other. When the rotating shaft 2 rotates around its axis, the toothed structure 24 on the rotating shaft 2 rotates accordingly. Through the meshing transmission action between the toothed structure 24 and the toothed structure 31, the locking rod 3 is driven to move up and down linearly in the height direction of the lock box 1.

[0033] like Figure 3 and Figure 4 As shown, the lock box 1 also contains an electric drive assembly 5, which provides driving force for the rotation of the rotating shaft 2. The electric drive assembly 5 is entirely housed within the internal space of the lock box 1. Taking the rotating shaft 2 as a dividing line, the locking rod 3 is located on one side of the lock box 1, while the electric drive assembly 5 is located on the other side of the lock box 1; that is, the locking rod 3 and the electric drive assembly 5 are located on opposite sides of the rotating shaft 2.

[0034] like Figure 4 As shown, the electric drive assembly 5 includes a circuit board 51, a motor 52, and a micro switch 53. The circuit board 51 is a PCB (Printed Circuit Board) and is fixedly mounted on the inner bottom wall of the lock box 1. The motor 52 is located on the upper surface of the circuit board 51, and is electrically connected to the circuit board 51 through printed circuit lines. The power supply for the motor 52 is provided by the circuit board 51. Similarly, the micro switch 53 is located on the upper surface of the circuit board 51, and is electrically connected to the circuit board 51 through printed circuit lines. The signal transmission of the micro switch 53 is completed through the circuit board 51.

[0035] like Figure 4 and Figure 5As shown, a positioning hole 512 is provided on the circuit board 51, which is a through hole penetrating the thickness direction of the circuit board 51. Correspondingly, a positioning protrusion 12 is integrally formed on the inner bottom wall of the lock box 1, and the positioning protrusion 12 is cylindrical and protrudes from the inner bottom wall of the lock box 1. The position of the positioning protrusion 12 corresponds to the position of the positioning hole 512, and the diameter of the positioning protrusion 12 is adapted to the inner diameter of the positioning hole 512. When the circuit board 51 is installed in the lock box 1, the positioning protrusion 12 passes through the positioning hole 512, and the two cooperate to achieve the positioning of the circuit board 51 in the plane direction of the inner bottom wall of the lock box 1.

[0036] like Figure 1 and Figure 4 As shown, a bevel gear 521 is provided at the output end of the motor 52. The bevel gear 521 is fixedly connected to the output shaft of the motor 52 and rotates synchronously with the output shaft of the motor 52. Correspondingly, a bevel gear 23 is provided at one end of the rotating shaft 2 and is fixedly fitted onto the shaft end of the rotating shaft 2. The bevel gear 521 and the bevel gear 23 mesh with each other, and their axes are perpendicular to each other, forming a bevel gear transmission pair. The motor 52 drives the rotating shaft 2 to rotate through the meshing transmission of the bevel gear 521 and the bevel gear 23. That is, the bevel gear 521 and the bevel gear 23 together constitute the second linkage structure of this application.

[0037] like Figure 3 and Figure 4 As shown, a contact block 22 is fixedly installed on the outer peripheral wall of the rotating shaft 2, and the contact block 22 rotates synchronously with the rotation of the rotating shaft 2. The position of the contact block 22 on the rotating shaft 2 corresponds to the position of the micro switch 53. When the rotating shaft 2 rotates to a predetermined angle, the outer peripheral surface of the contact block 22 contacts and presses the contact of the micro switch 53, thereby triggering the micro switch 53 to generate a corresponding electrical signal. The contact block 22 can be cam-shaped, fan-shaped, or other structural forms with a raised trigger surface, and the timing of its contact with the micro switch 53 is determined by the rotation angle of the rotating shaft 2.

[0038] like Figure 4 As shown, the micro switch 53 and the motor 52 are both mounted on the same side of the rotating shaft 2 on the circuit board 51, meaning they are arranged on the same side of the rotating shaft 2. This same-side arrangement ensures that the signal transmission path of the micro switch 53 is entirely within the same side of the rotating shaft 2, without needing to cross the spatial area where the rotating shaft 2 is located. Furthermore, the signal transmission of the micro switch 53 is accomplished through printed circuits on the circuit board 51, eliminating the need for long wires crossing the rotating shaft 2.

[0039] like Figure 3 and Figure 4As shown, a partition 13 protrudes from the inner bottom wall of the lock box 1. The partition 13 extends upward along the height direction of the lock box 1 and is located between the motor 52 and the micro switch 53. The partition 13 spatially isolates the motor 52 and the micro switch 53. On the one hand, it can block the electromagnetic field generated by the motor 52 during operation from interfering with the micro switch 53. On the other hand, it can also prevent the heat generated by the motor 52 during operation from being directly conducted to the micro switch 53 and affecting its performance.

[0040] like Figure 2 and Figure 4 As shown, a wedge-shaped block 21 is also fixedly installed on the rotating shaft 2. The wedge-shaped block 21 has an inclined surface. The wedge-shaped block 21 is located near the other end of the rotating shaft 2 opposite to the bevel gear 23. A slide bar 4 is slidably installed on the inner side of the lock box 1. The slide bar 4 extends along the width direction of the lock box 1 and is constrained to slide linearly only along the width direction of the lock box 1 on the inner side of the lock box 1.

[0041] like Figure 4 As shown, a traction port 41 is provided on the slider 4, extending through the thickness direction of the slider 4. The outline dimension of the traction port 41 is larger than the outer outline dimension of the inclined block 21. The inclined block 21 is inserted into the traction port 41, that is, the inclined block 21 is located within the opening area enclosed by the traction port 41. The inclined angle of the inclined block 21 faces away from the micro switch 53, that is, the inclined surface of the inclined block 21 faces away from the side where the micro switch 53 is located. The surface of the inclined block 21 facing the inclined angle abuts against the inner wall of the traction port 41.

[0042] like Figure 4 As shown, a spring 43 is provided on one side of the slide bar 4. The spring 43 is a helical compression spring. One end of the spring 43 abuts against the end face of the slide bar 4, and the other end of the spring 43 abuts against the inner wall of the lock box 1. The spring 43 is always in a compressed state, applying an elastic thrust to the slide bar 4 in the direction of the traction port 41, so that the inner wall of the traction port 41 remains in contact with the inclined block 21.

[0043] like Figure 4 As shown, a pull cable 42 is connected to one side of the slider 4. The pull cable 42 is a flexible steel wire rope or cable. The pull cable 42 passes through the interior of the spring 43 and extends to the exterior of the lock box 1. When the operator pulls the pull cable 42 from the outside of the lock box 1, the pull cable 42 causes the slider 4 to slide against the elastic force of the spring 43. During the sliding process, the slider 4 pushes the inclined surface of the inclined block 21 through the inner wall of the traction port 41, thereby causing the inclined block 21 to drive the rotating shaft 2 to rotate around its axis. In turn, the first linkage structure drives the locking rod 3 to move upward to achieve emergency unlocking.

[0044] like Figure 2 , Figure 3 and Figure 5As shown, a cable rod 44 is sleeved on the outside of the cable 42. The cable rod 44 is a rigid tubular structure. The cable 42 passes through the internal cavity of the cable rod 44 and can slide relative to the cable rod 44 along the axial direction. The cable 42 slides through the cable rod 44 and extends out of the outside of the cable rod 44 from its end.

[0045] like Figure 3 and Figure 5 As shown, a positioning chamber 14 is provided in one corner of the lock box 1. The positioning chamber 14 is formed by the inner wall of the lock box 1 and is an independent cavity structure. A positioning boss 15 is provided in the positioning chamber 14, which protrudes upward from the bottom wall of the positioning chamber 14. A stepped hole 16 is formed in the positioning boss 15. The stepped hole 16 is a stepped hole structure with a large diameter section and a small diameter section. The transition surface between the large diameter section and the small diameter section forms a stepped surface. One side of the stepped hole 16 is connected to the internal space of the lock box 1, and the other side of the stepped hole 16 extends to the outside of the lock box 1.

[0046] like Figure 5 As shown, the end of the cable rod 44 passes through the stepped hole 16, and the large-diameter section of the end of the cable rod 44 is adapted to the large-diameter section of the stepped hole 16. The end face of the large-diameter section of the end of the cable rod 44 abuts against the stepped surface of the stepped hole 16, thereby achieving axial positioning of the cable rod 44 in the passing direction. After the cable 42 passes through the cable rod 44, it further passes through the small-diameter section of the stepped hole 16 and extends to the outside of the lock box 1.

[0047] like Figure 3 and Figure 5 As shown, an annular groove 441 is formed on the outer peripheral wall of the cable rod 44, which is a groove that surrounds the outer wall of the cable rod 44. A U-shaped insert 62 protrudes downward from the bottom of the lock cover 6. The U-shaped insert 62 is U-shaped and has two parallel and spaced prongs. When the lock cover 6 is closed on the lock box 1, the U-shaped insert 62 extends downward into the positioning chamber 14, and the two prongs of the U-shaped insert 62 span across both sides of the cable rod 44 and are embedded in the annular groove 441.

[0048] like Figure 5 As shown, one side of the U-shaped insert 62 abuts against the side of the positioning boss 15, and the other side of the U-shaped insert 62 abuts against the side wall of the positioning chamber 14, so that the U-shaped insert 62 is clamped and fixed in the space between the positioning boss 15 and the side wall of the positioning chamber 14. After the U-shaped insert 62 is embedded in the annular groove 441, it forms an axial limit on the cable rod 44, preventing the cable rod 44 from coming out of the stepped hole 16.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A European standard charging dock electronic lock with reduced signal interference, comprising a lock box (1) and a lock cover (6), wherein the lock box (1) is provided with a rotatable shaft (2), the shaft (2) acting on a locking rod (3) through a first linkage structure to drive the locking rod (3) to move up and down in the height direction of the lock box (1), characterized in that, The lock box (1) is also provided with an electric drive assembly (5). The electric drive assembly (5) includes a circuit board (51), a motor (52) mounted on the circuit board (51), and a micro switch (53) mounted on the circuit board (51). The motor (52) is connected to the circuit board (51), and the micro switch (53) is connected to the circuit board (51). The rotating shaft (2) is provided with a contact block (22). The contact block (22) triggers the micro switch (53) as the rotating shaft (2) rotates. The motor (52) drives the rotating shaft (2) to rotate through a second linkage structure.

2. The European standard charging dock electronic lock for reducing signal interference according to claim 1, characterized in that, The micro switch (53) and the motor (52) are located on the same side of the rotating shaft (2) on the circuit board (51).

3. The European standard charging dock electronic lock for reducing signal interference according to claim 2, characterized in that, The inner bottom wall of the lock box (1) is provided with a partition (13), which is located between the motor (52) and the micro switch (53).

4. The European standard charging dock electronic lock for reducing signal interference according to claim 1, characterized in that, The circuit board (51) is provided with a positioning hole (512), and the inner bottom wall of the lock box (1) is provided with a positioning protrusion (12), which passes through the positioning hole (512).

5. The European standard charging dock electronic lock for reducing signal interference according to claim 1, characterized in that, The second linkage structure includes a bevel gear one (521) disposed at the output end of the motor (52) and a bevel gear two (23) disposed on the rotating shaft (2), wherein the bevel gear one (521) and the bevel gear two (23) mesh with each other.

6. The European standard charging dock electronic lock for reducing signal interference according to claim 1, characterized in that, The first linkage structure includes a toothed structure one (24) disposed on the rotating shaft (2) and a toothed structure two (31) disposed on one side of the locking rod (3), wherein the toothed structure one (24) and the toothed structure two (31) mesh with each other.

7. The European standard charging dock electronic lock for reducing signal interference according to claim 1, characterized in that, The rotating shaft (2) is also provided with a wedge (21). A slide bar (4) is slidably arranged on the inner side of the lock box (1). The slide bar (4) has a traction port (41). The wedge (21) passes through the traction port (41). A spring (43) is provided on one side of the slide bar (4). The other side of the spring (43) abuts against the inner wall of the lock box (1). A cable (42) is provided on one side of the slide bar (4). The cable (42) passes through the spring (43) and extends to the outside of the lock box (1).

8. The European standard charging dock electronic lock for reducing signal interference according to claim 7, characterized in that, The angle of the inclined block (21) is directed away from the micro switch (53), and the angle of the inclined block (21) is directed to the inner wall of the traction port (41).

9. The European standard charging dock electronic lock for reducing signal interference according to claim 7, characterized in that, The cable (42) is fitted with a rod (44) on its outside, and the cable (42) slides through the rod (44) and extends out of the end of the rod (44).

10. The European standard charging dock electronic lock for reducing signal interference according to claim 9, characterized in that, The lock box (1) has a positioning chamber (14) in one corner. The positioning chamber (14) has a positioning boss (15). The positioning boss (15) has a stepped hole (16). One side of the stepped hole (16) is connected to the interior of the lock box (1), and the other side is connected to the exterior of the lock box (1). The end of the cable rod (44) passes through the stepped hole (16) and abuts against the stepped surface of the stepped hole (16). The cable rod (44) has an annular groove (441) on its exterior. The lock cover (6) has a U-shaped insert (62) at its bottom. The U-shaped insert (62) extends into the positioning chamber (14) and is embedded in the annular groove (441).

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