A car charging cover with self-locking function and control method thereof

Abstract

The invention discloses a car charging cover with a self-locking function and a control method thereof, comprising a base assembly, a door cover assembly and an actuator, wherein the base assembly is provided with a linkage rotating structure, the actuator is connected to the linkage rotating structure by transmission, the door cover assembly comprises a door cover and a hinge, the door cover is fixed to a rotating shaft by a hinge, and the hinge is connected to the base assembly by rotation of the rotating shaft; a locking assembly is movably provided on the base assembly, the linkage rotating structure cooperates with the locking assembly through a guide structure, and controls the locking assembly to switch the door cover assembly between a locked state and an unlocked state; the linkage rotating structure is provided with a gear matching part and a retention groove, a driven sector gear is fixed coaxially outside the rotating shaft, the driven sector gear is provided with a toggle part corresponding to the retention groove, the toggle part cooperates with the two end stops of the retention groove, and the gear matching part meshes with the driven sector gear for transmission. The locking assembly has the effect of automatically unlocking when the door cover assembly is opened and automatically locking when the door cover assembly is closed.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to an automobile charging cover with a self-locking function and a control method thereof. Background Art

[0002] The existing Chinese patent with announcement number CN208376518U discloses a door cover opening and closing structure, including a box body and a door cover, the door cover is rotatably mounted on the box body through a rotating shaft, a speed regulating assembly is mounted on the box body, the speed regulating assembly includes a spring and a speed regulating member connected to the rotating shaft, one end of the spring is fixedly connected to the box body, the other end of the spring is connected to the rotating shaft, and the rotation of the rotating shaft drives the end of the spring connected to the rotating shaft to rotate, and an actuator is also mounted on the box body.

[0003] However, the above-mentioned door cover opening and closing structure has the following disadvantages: when the door cover is in a closed state relative to the box body, there is no positioning locking structure between the door cover and the box body, and the locking force is completely generated by the actuator. The door cover can be easily pried open relative to the box body from the outside. There are existing locking structures between the box body and the door cover on the market, but usually the unlocking of the locking structure and the opening of the door cover need to be carried out separately in two steps, which is more troublesome to coordinate and cannot produce the effect of linked opening of the cover, and it is urgent to improve. Summary of the invention

[0004] The object of the present invention is to provide a car charging cover with a self-locking function and a control method thereof, which has the effect that a locking assembly is automatically unlocked when a door cover assembly is opened, and is automatically locked when the door cover assembly is closed.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A car charging cover with a self-locking function, comprising a base assembly and a door cover assembly, the base assembly is provided with an actuator, the base assembly is rotatably provided with a linkage rotating structure, the output end of the actuator is transmission-connected with the linkage rotating structure, the door cover assembly comprises a door cover and a hinge, the base assembly is rotatably provided with a rotating shaft, one end of the hinge is fixedly connected to the door cover, and the other end of the hinge is fixedly fixed to the rotating shaft;

[0006] A locking assembly is movably provided on the base assembly, a guide structure is provided between the linkage rotation structure and the locking assembly, the linkage rotation structure cooperates with the locking assembly through the guide structure, and controls the locking assembly to switch the door cover assembly between a locked state and an unlocked state;

[0007] The linked rotating structure is provided with a gear matching portion and a retention groove. A driven sector gear is coaxially fixed outside the rotating shaft. The driven sector gear is provided with a toggle portion corresponding to the retention groove. The toggle portion cooperates with the stoppers at both ends of the retention groove, and the gear matching portion meshes with the driven sector gear for transmission.

[0008] By adopting the above technical solution, when the door cover assembly is opened from a closed state, the actuator drives the linkage rotating structure to rotate in the unlocking direction, and the linkage rotating structure drives the locking assembly and the door cover assembly to unlock each other through the guide structure. At the same time, the side wall of the retention groove in contact with the toggle portion rotates from one end to the other, so that the gear matching portion rotates to a state where it just meshes with the driven sector gear. In this process, since the relative movement of the toggle lever in the retention groove is an idle stroke movement, the door cover assembly will not rotate relative to the base assembly. At the same time, under the action of the guide structure, the locking assembly and the door cover assembly will be driven to unlock. Afterwards, the gear matching portion of the linkage rotating structure meshes with the driven sector gear for transmission, and then drives the door cover through the rotating shaft. The assembly rotates to open the door cover assembly outward; when the door cover assembly is closed from an open state, the actuator drives the linked rotating structure to rotate in the opposite direction, and the fan gear part rotates in the direction of closing the door cover assembly through the driven fan gear and the rotating shaft. When the door cover assembly is closed, the fan gear part disengages from the driven fan gear, and the toggle part enters the retention groove. The linked rotating structure continues to rotate, and the guide structure is used to drive the locking assembly to lock with the door cover assembly until the toggle part abuts against the other end of the retention groove. At this time, the linked rotating structure uses the side wall of the retention groove and the stopper of the toggle part to lock the door cover assembly, which has the effect of automatically unlocking the locking assembly when the door cover assembly is opened and automatically locking the locking assembly when the door cover assembly is closed.

[0009] The present invention is further configured as follows: the linked rotation structure includes an active sector gear and a turntable, the active sector gear is provided with the gear matching portion and the retention groove, the turntable is provided with a rotation connection portion, the actuator drives the turntable to rotate through the rotation connection portion, and the turntable is engaged with the active sector gear to stop rotation through a positioning structure.

[0010] By adopting the above technical solution, the gear mating part of the active sector gear may be worn after long-term use, resulting in the door cover assembly not opening and closing smoothly. Different from the method of integrally forming the active sector gear and the turntable, the present invention utilizes the rotating connection part of the turntable to connect with the actuator for transmission, and then coaxially fixes the active sector gear on the turntable. When the worn parts need to be replaced, only the active sector gear needs to be replaced alone, and there is no need to replace the turntable. The replacement is more convenient and saves costs.

[0011] The present invention is further configured as follows: the positioning structure includes a positioning protrusion and a positioning groove, the positioning protrusion is convexly arranged on the turntable, the positioning groove is arranged on the active sector gear, and the positioning protrusion cooperates with the positioning groove in a positioning and anti-rotation manner.

[0012] By adopting the above technical solution, during assembly, it is only necessary to align and plug the positioning groove of the active sector gear with the positioning protrusion on the turntable to achieve the anti-rotation between the two. The installation method is simple and practical.

[0013] The present invention is further configured as follows: the guide structure comprises a first guide slope, the turntable is convexly provided with a guide block, the first guide slope is arranged on a side wall of the guide block, and the guide block is guided and matched with the locking assembly through the first guide slope.

[0014] By adopting the above technical solution, when the turntable rotates in the unlocking direction, due to the height difference between the locking assembly and the linked rotating structure, the locking assembly, under the action of its own gravity, utilizes the guiding cooperation of the first guide slope and the locking assembly to drive the locking assembly to descend and unlock the door cover assembly. When the turntable rotates in the locking direction, under the guiding action of the first guide slope and the locking assembly, the locking assembly is driven to rise and press against the door cover assembly to achieve locking.

[0015] The present invention is further configured as follows: the locking assembly is provided with a second guiding inclined surface corresponding to the first guiding inclined surface, and the first guiding inclined surface is guided and matched with the second guiding inclined surface.

[0016] By adopting the above technical solution, under the guiding action of the first guiding bevel and the second guiding bevel, the locking assembly can be lifted and lowered relative to the guide block more smoothly, which can effectively prevent the present invention from getting stuck during operation.

[0017] The present invention is further configured as follows: the locking assembly includes a locking part and an elastic part, the door cover assembly is provided with a lock hole corresponding to the locking assembly, the locking part is movably arranged on the base assembly, and the elastic part always has a movement tendency to drive the locking part to press against the linkage rotating structure.

[0018] By adopting the above technical solution and adding the elastic member, when the turntable rotates in the unlocking direction, the elastic member uses its own elastic force to push the locking member away from the door cover assembly, so that the locking member gradually disengages from the lock hole of the door cover assembly to achieve automatic unlocking.

[0019] The present invention is further configured as follows: the linked rotating structure includes an active sector gear and a turntable, the turntable is provided with a guide block, the upper end surface of the guide block is configured as a support plane, and when the locking member is guided to slide onto the support plane, the locking member is supported and cooperated with the support plane.

[0020] By adopting the above technical solution, when the door cover assembly is in a closed state, the elastic member is compressed and has elastic potential energy. At this time, the lower end of the locking member is against the supporting plane, and the supporting plane can offset the elastic force of the elastic member, thereby improving the overall force stability of the present invention when the door cover assembly is closed.

[0021] The present invention is further configured as follows: an emergency pull cable is slidably provided on the base assembly, and the emergency pull cable is transmission-connected with the linkage rotating structure through a transmission structure, so as to control the linkage rotating structure to drive the door cover assembly to open.

[0022] By adopting the above technical solution, when the vehicle body loses power or other unexpected situations cause the actuator to fail to work normally, the emergency cable is pulled, and the linkage rotating structure is driven to rotate by utilizing the linkage cooperation between the transmission structure and the linkage rotating structure, thereby replacing the output force of the actuator to realize emergency opening of the door cover assembly.

[0023] The present invention is further configured as follows: the transmission structure includes an unlocking block and a pushing block, the turntable is radially extended with the pushing block, the base assembly is provided with a sliding groove, the unlocking block is guided and cooperated with the sliding groove, the unlocking block is pushed and cooperated with the pushing block, the unlocking block is fixedly connected to the emergency cable, and the emergency cable is pulled to control the unlocking block to drive the turntable to rotate in the unlocking direction.

[0024] By adopting the above technical solution, the emergency cable is pulled, and the emergency cable synchronously drives the unlocking block to slide in the slide groove, and the unlocking block pushes the push block to move, thereby driving the turntable to rotate, and the turntable drives the active sector gear to rotate synchronously to realize the linked opening of the door cover assembly.

[0025] Another technical purpose of the present invention is to provide a control method for a car charging cover with a self-locking function, comprising the following steps:

[0026] S1: Unlocking: In the initial state, the door cover is in a closed state, and the locking structure is in a locked state. The actuator drives the linkage rotating structure to rotate in the unlocking direction. The linkage rotating structure uses the guide structure to drive the locking assembly away from the hinge to unlock the door cover assembly. During the unlocking process, the toggle part moves in the retention groove. Due to the setting of the retention groove during the unlocking process, the toggle rod and the linkage rotating structure avoid each other, so the door cover assembly will not rotate during the unlocking process;

[0027] S2: Opening the cover: The actuator drives the linkage rotating structure to continue to rotate in the unlocking direction. The linkage rotating structure uses the side wall of the retention groove and the stopper effect of the toggle part to drive the toggle part to drive the driven sector gear to rotate synchronously, so that the gear matching part of the linkage rotating structure and the driven sector gear are meshed with each other, thereby driving the driven sector gear to rotate. The driven sector gear then drives the door cover assembly to rotate to the open state through the rotating shaft;

[0028] S3: Closing the cover: The actuator drives the linkage rotating structure to rotate in the locking direction, and utilizes the meshing action of the gear matching part of the linkage rotating structure and the driven sector gear to drive the rotating shaft to drive the door cover assembly to flip toward the closed state;

[0029] S4: Locking: The actuator drives the linkage rotating structure to continue to rotate in the locking direction, so that the gear mating part of the linkage rotating structure and the gear part of the driven sector gear disengage from each other, and at the same time, the toggle part falls into the retention groove, and then under the guidance of the guide structure, the locking assembly is locked and fixed to the door cover assembly in the closed state. During the locking process, the toggle part performs an empty stroke movement in the retention groove to prevent the door cover assembly from being over-closed.

[0030] In summary, the present invention has the following beneficial effects:

[0031] 1. A turntable is rotatably arranged on the base, and an active sector gear is coaxially fixed on the turntable. The active sector gear is provided with a retention groove. At the same time, a rotating shaft is rotatably arranged on the shell. A door cover assembly is fixedly sleeved on the middle of the rotating shaft, and the lower end of the rotating shaft is fixedly connected to the driven sector gear. The driven sector gear is provided with a toggle portion protruding outward, and the toggle portion is movably arranged in the retention groove, and the toggle portion cooperates with the stoppers at both ends of the retention groove. A locking piece is slidably arranged on the base, and a lock hole is provided in the door cover assembly corresponding to the lock piece. A guide block is arranged around the turntable, and the guide block and the lock piece are guided and cooperated through a guide structure. The linkage cooperation of the retention groove and the guide structure has the effect of automatically unlocking the lock assembly when the door cover assembly is opened and automatically locking the lock assembly when the door cover assembly is closed.

[0032] 2. An emergency pull cable is set up, and pulling the emergency pull cable drives the unlocking block to slide. The unlocking block simultaneously pushes the push block of the turntable, thereby replacing the driving rotational force of the actuator on the turntable, so that the turntable can drive the active sector gear to realize the linkage cooperation of the locking assembly and the driven sector gear, thereby realizing the emergency opening of the door cover assembly, which has the effect of realizing manual opening of the door cover assembly in emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural diagram of the present invention.

[0034] Figure 2 It is an exploded view of the present invention, in which the housing is hidden.

[0035] Figure 3 It is an internal connection diagram of the present invention.

[0036] Figure 4 This is an internal connection view of the present invention, with the base hidden.

[0037] Figure 5 It is a connection view of the locking assembly of the present invention on the base.

[0038] Figure 6 It is an exploded view of the actuator, the turntable and the active sector gear of the present invention.

[0039] Figure 7 It is an exploded view of the actuator, the turntable and the active sector gear of the present invention from another perspective.

[0040] Figure 8 It is an internal connection diagram of the door cover assembly of the present invention in a closed state, and the locking assembly is in a locked state.

[0041] Fig. 9 It is an internal connection diagram of the door cover assembly of the present invention in a closed state, and the locking assembly is in an unlocked state.

[0042] Fig.10 It is an internal connection diagram of the door cover assembly of the present invention in an open state, and the locking assembly is in an unlocked state.

[0043] In the figure: 1. base assembly; 11. base; 11a. sliding hole; 11b. sliding groove; 12. shell; 2. door cover assembly; 2a. locking hole; 2b. anti-rotation hole; 21. door cover; 22. hinge; 3. actuator; 4. rotating shaft; 41. anti-rotation part; 5. driving sector gear; 5a. retention groove; 5b. positioning groove; 51. gear matching part; 6. turntable; 61. rotating connection part; 62. positioning protrusion; 63. guide block; 63a. first guide inclined surface; 63b. supporting plane; 64. pushing block; 7. driven sector gear; 71. toggle part; 8. locking member; 8a. second guide inclined surface; 81. sliding part; 82. locking part; 83. elastic member; 9. emergency pull rope; 91. unlocking block; 92. sleeve. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] A car charging cover with a self-locking function, such as Figure 1-2 and Figure 8-10As shown, it includes a base assembly 1, a door cover assembly 2 and an actuator 3. The door cover assembly 2 includes a door cover 21 and a hinge 22. A rotating shaft 4 is rotatably connected to the base assembly. One end of the hinge 22 is fixedly connected to the door cover 21, and the other end of the hinge 22 is fixed to the rotating shaft 4 for rotation prevention. The base assembly 1 includes a base 11 and a shell 12. A rotation prevention portion 41 is radially extended to the rotating shaft 4. A rotation prevention hole 2b is opened corresponding to the rotation prevention portion 41 of the door cover assembly 2. The rotating shaft 4 is matched with the rotation prevention hole 2b for rotation prevention through the rotation prevention portion 41. During assembly, the rotation prevention portion 41 of the rotating shaft 4 can be aligned and inserted into the rotation prevention hole 2b to realize the rotation prevention fixation of the rotating shaft 4 and the door cover assembly 2, so that the rotating shaft 4 and the door cover assembly 2 can be detachably connected, which is convenient for the subsequent separate detachment and replacement of the rotating shaft 4 when it is damaged, which is different from the rotating shaft 4 being integrated The method of being mounted on the door cover assembly 2 can reduce the cost of replacing accessories for users; a linkage rotation structure is rotatably provided on the base 11, the actuator 3 is transmission-connected with the linkage rotation structure, a driven sector gear 7 is fixedly provided on the outside of the rotating shaft 4, the linkage rotation structure is provided with a gear matching portion 51 and a retention groove 5a, the driven sector gear 7 is provided with a toggle portion 71 corresponding to the retention groove 5a, the toggle portion 71 is matched with the two end stops of the retention groove 5a, the toggle portion 71 of this embodiment is set as a toggle rod, and the gear matching portion 51 is meshed with the driven sector gear 7 for transmission; a locking assembly is movably provided on the base 11, a guide structure is provided between the linkage rotation structure and the locking assembly, the linkage rotation structure is matched with the locking assembly guide through the guide structure, and controls the locking assembly to switch the door cover assembly 2 between a locked state and an unlocked state.

[0046] like Figure 4-7 As shown, the linkage rotation structure includes an active sector gear 5 and a turntable 6. The active sector gear 5 is provided with a gear matching portion 51 and a retention groove 5a. The turntable 6 is provided with a rotation connection portion 61. The actuator 3 drives the turntable 6 to rotate through the rotation connection portion 61. The turntable 6 is matched with the active sector gear 5 to stop rotation through a positioning structure. After long-term use, the gear matching portion 51 of the active sector gear 5 may be worn, resulting in the door cover assembly 2 opening and closing not being smooth. Different from the method of integrally forming the active sector gear 5 and the turntable 6, the present invention utilizes the rotation connection portion 61 of the turntable 6 to be transmission-connected with the actuator 3, and then rotates. The active sector gear 5 is coaxially fixed on the disk 6. When the worn parts need to be replaced, only the active sector gear 5 needs to be replaced without replacing the turntable 6. The replacement is more convenient and saves costs. The positioning structure includes a positioning protrusion 62 and a positioning groove 5b. The positioning protrusion 62 is convexly arranged on the turntable 6, and the positioning groove 5b is provided on the active sector gear 5. The positioning protrusion 62 and the positioning groove 5b are positioned and stopped. During assembly, it is only necessary to align the positioning groove 5b of the active sector gear 5 with the positioning protrusion 62 on the turntable 6 to achieve the stop rotation between the two. The installation method is simple and practical.

[0047] like Figure 5-8As shown, the guide structure includes a first guide slope 63a and a second guide slope 8a. The turntable 6 is convexly provided with a guide block 63. The first guide slope 63a is obliquely opened on the side wall of the guide block 63. The second guide slope 8a is obliquely opened on the locking component corresponding to the first guide slope 63a. The first guide slope 63a and the second guide slope 8a are guided and matched. When the turntable 6 rotates in the unlocking direction, due to the height difference between the locking component and the linkage rotating structure, the first guide slope 63a and the second guide slope are used to lock the locking component. The guide cooperation of 8a drives the locking assembly away from the door cover assembly 2 to unlock. When the turntable 6 rotates in the locking direction, under the guidance of the first guide slope 63a and the second guide slope 8a, the locking assembly is driven to rise and abut against the door cover assembly 2 to achieve locking; the locking assembly includes a locking member 8 and an elastic member 83. The door cover assembly 2 is provided with a lock hole 2a corresponding to the locking assembly. The second guide slope 8a is provided on the locking member 8. The locking member 8 includes a sliding portion 81 and a locking portion 82. The base assembly 1 is provided with a sliding portion 83. The sliding part 81 slides with the sliding hole 11a, the locking part 82 locks with the locking hole 2a, one end of the elastic member 83 abuts against the locking member 8, and the other end of the elastic member 83 abuts against the base assembly 1. The sliding part 81 slides with the sliding hole 11a, so that the locking member 8 is movably installed on the base assembly 1. The addition of the elastic member 83 makes it possible for the elastic member 83 to use its own elastic force to push the locking member 8 away from the door cover assembly 2 during the rotation of the turntable 6 in the unlocking direction, so that the locking part 82 descends and gradually locks with the door cover assembly 2. The lock holes 2a of the door cover assembly 2 are disengaged from each other to achieve automatic unlocking; the upper end surface of the guide block 63 is set as a support plane 63b, and when the locking member 8 is guided to slide onto the support plane 63b, the locking member 8 and the support plane 63b are supported and cooperated. When the door cover assembly 2 is in a closed state, the elastic member 83 is compressed and has elastic potential energy. At this time, the lower end of the locking member 8 is against the support plane 63b, and the support plane 63b can offset the elastic force of the elastic member 83, thereby improving the overall force stability of the present invention when the door cover assembly 2 is closed.

[0048] like Figure 1-4As shown, an emergency cable 9 is slidably provided on the base assembly 1, and the emergency cable 9 is connected to the linkage rotating structure through a transmission structure, and the linkage rotating structure is controlled to drive the door cover assembly 2 to open. When the vehicle body loses power or other unexpected situations cause the actuator 3 to fail to work normally, the emergency cable 9 is pulled, and the linkage rotating structure can be driven to rotate by utilizing the linkage cooperation between the transmission structure and the linkage rotating structure, thereby replacing the output force of the actuator 3 to realize the emergency opening of the door cover assembly 2; the transmission structure includes an unlocking block 91 and a push block 64, and the turntable 6 is radially extended to be provided with a push block 64, the base assembly 1 is provided with a slide groove 11b, the unlocking block 91 is guided and cooperated with the slide groove 11b, the unlocking block 91 is fixedly connected to the emergency cable 9, and the emergency cable 9 is pulled The unlocking block 91 is controlled to drive the turntable 6 to rotate in the unlocking direction, and the emergency cable 9 is pulled. The emergency cable 9 synchronously drives the unlocking block 91 to slide in the slide groove 11b, and the unlocking block 91 pushes the push block 64 to move, thereby driving the turntable 6 to rotate, and the turntable 6 drives the active sector gear 5 to rotate synchronously to realize the linkage opening of the door cover assembly 2; a sleeve 92 is provided on the outer sleeve of the emergency cable 9, and one end of the sleeve 92 is fixedly connected to the base assembly 1, and the emergency cable 9 is movably inserted into the sleeve 92. The addition of the sleeve 92 ensures that when the emergency cable 9 is pulled, the outer wall of the emergency cable 9 will not directly contact the vehicle body, but will slide in the sleeve 92, which can effectively prevent the emergency cable 9 from being stuck with the vehicle body and causing the door cover assembly 2 to be unable to be opened urgently.

[0049] Another technical purpose of the present invention is to provide a control method for a car charging cover with a self-locking function, comprising the following steps:

[0050] S1: Unlocking: In the initial state, the door cover is in the closed state, and the locking structure is in the locked state. The actuator 3 drives the linkage rotating structure to rotate in the unlocking direction. The linkage rotating structure uses the guide structure to drive the locking assembly away from the hinge 22 to unlock the door cover assembly 2. During the unlocking process, the toggle portion 71 moves in the retention groove 5a. Due to the setting of the retention groove 5a during the unlocking process, the toggle lever and the linkage rotating structure avoid each other, so the door cover assembly 2 will not rotate during the unlocking process;

[0051] S2: Opening the cover: The actuator 3 drives the linkage rotating structure to continue to rotate in the unlocking direction. The linkage rotating structure uses the side wall of the retention groove 5a and the stopping effect of the toggle part 71 to drive the toggle part 71 to drive the driven sector gear 7 to rotate synchronously, so that the gear matching part 51 of the linkage rotating structure and the driven sector gear 7 are meshed with each other, thereby driving the driven sector gear 7 to rotate, and the driven sector gear 7 then drives the door cover assembly 2 to rotate to the open state through the rotating shaft 4;

[0052] S3: Closing the cover: The actuator 3 drives the linkage rotating structure to rotate in the locking direction, and utilizes the meshing action between the gear matching portion 51 of the linkage rotating structure and the driven sector gear 7 to drive the rotating shaft 4 to drive the door cover assembly 2 to flip toward the closed state;

[0053] S4: Locking: The actuator 3 drives the interlocking rotating structure to continue to rotate in the locking direction, so that the gear matching part 51 of the interlocking rotating structure and the gear part of the driven sector gear 7 are disengaged from each other, and at the same time, the toggle part 71 falls into the retention groove 5a, and then under the guidance of the guide structure, the locking assembly is locked and fixed to the door cover assembly 2 in the closed state. During the locking process, the toggle part 71 performs an empty stroke movement in the retention groove 5a to prevent the door cover assembly 2 from being over-closed.

[0054] The basic working principle of the present invention is as follows: when the door cover assembly 2 is opened from a closed state, the actuator 3 drives the linkage rotating structure to rotate in the unlocking direction, and the linkage rotating structure drives the locking assembly and the door cover assembly 2 to unlock each other through the guide structure. At the same time, the side wall of the retention groove 5a in contact with the toggle portion 71 rotates from one end to the other, so that the gear matching portion 51 rotates to a state where it just meshes with the driven sector gear 7. During this process, since the relative movement of the toggle lever in the retention groove 5a is an idle stroke movement, the door cover assembly 2 will not rotate relative to the base assembly 1. At the same time, under the action of the guide structure, the locking assembly and the door cover assembly 2 will be driven to unlock. Afterwards, the gear matching portion 51 of the linkage rotating structure meshes with the driven sector gear 7 for transmission, and then drives the door cover assembly 2 through the rotating shaft 4. Rotate to open the door cover assembly 2 outward; when the door cover assembly 2 is closed from the open state, the actuator 3 drives the linked rotating structure to rotate in the opposite direction, and the fan gear part rotates in the direction of closing the door cover assembly 2 through the driven fan gear 7 and the rotating shaft 4. When the door cover assembly 2 is closed, the fan gear part is disengaged from the driven fan gear 7. At this time, the toggle part 71 falls into the retention groove 5a, and the linked rotating structure continues to rotate, and the guide structure is used to drive the locking assembly to lock with the door cover assembly 2 until the toggle part 71 is against the other end of the retention groove 5a. At this time, the linked rotating structure uses the side wall of the retention groove 5a and the stopper of the toggle part 71 to lock the door cover assembly 2, which has the effect of automatically unlocking the locking assembly when the door cover assembly 2 is opened and automatically locking the locking assembly when the door cover assembly 2 is closed.

[0055] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A control method for a car charging cover with a self-locking function, the car charging cover comprising a base assembly (1) and a door cover assembly (2), the base assembly (1) being provided with an actuator (3), characterized in that: The base assembly (1) is rotatably provided with a linkage rotating structure, the output end of the actuator (3) is drivingly connected to the linkage rotating structure, the door cover assembly (2) comprises a door cover (21) and a hinge (22), the base assembly (1) is rotatably provided with a rotating shaft (4), one end of the hinge (22) is fixedly connected to the door cover (21), and the other end of the hinge (22) is fixedly fixed to the rotating shaft (4) to prevent rotation; A locking assembly is movably provided on the base assembly (1), a guide structure is provided between the linkage rotation structure and the locking assembly, the linkage rotation structure cooperates with the locking assembly through the guide structure, and controls the locking assembly to switch the door cover assembly (2) between a locked state and an unlocked state; The linked rotating structure is provided with a gear matching portion (51) and a retention groove (5a); a driven sector gear (7) is coaxially fixedly provided outside the rotating shaft (4); the driven sector gear (7) is provided with a toggle portion (71) corresponding to the retention groove (5a); the toggle portion (71) is matched with stoppers at both ends of the retention groove (5a); and the gear matching portion (51) is meshed with the driven sector gear (7) for transmission; The control method comprises the following steps: S1: Unlocking: In the initial state, the door cover is in a closed state, and the locking structure is in a locked state. The actuator drives the linkage rotating structure to rotate in the unlocking direction. The linkage rotating structure uses the guide structure to drive the locking assembly away from the hinge to unlock the door cover assembly. During the unlocking process, the toggle part moves in the retention groove. Due to the setting of the retention groove during the unlocking process, the toggle rod and the linkage rotating structure avoid each other, so the door cover assembly will not rotate during the unlocking process; S2: Opening the cover: The actuator drives the linkage rotating structure to continue to rotate in the unlocking direction. The linkage rotating structure uses the side wall of the retention groove and the stopper effect of the toggle part to drive the toggle part to drive the driven sector gear to rotate synchronously, so that the gear matching part of the linkage rotating structure and the driven sector gear are meshed with each other, thereby driving the driven sector gear to rotate. The driven sector gear then drives the door cover assembly to rotate to the open state through the rotating shaft; S3: Closing the cover: The actuator drives the linkage rotating structure to rotate in the locking direction, and utilizes the meshing action of the gear matching part of the linkage rotating structure and the driven sector gear to drive the rotating shaft to drive the door cover assembly to flip toward the closed state; S4: Locking: The actuator drives the linkage rotating structure to continue to rotate in the locking direction, so that the gear mating part of the linkage rotating structure and the gear part of the driven sector gear disengage from each other, and at the same time, the toggle part falls into the retention groove, and then under the guidance of the guide structure, the locking assembly is locked and fixed to the door cover assembly in the closed state. During the locking process, the toggle part performs an empty stroke movement in the retention groove to prevent the door cover assembly from being over-closed.

2. The control method of a car charging cover with a self-locking function according to claim 1, characterized in that: The linked rotating structure comprises an active sector gear (5) and a rotating disk (6); the active sector gear (5) is provided with the gear matching portion (51) and the retention groove (5a); the rotating disk (6) is provided with a rotating connection portion (61); the actuator (3) drives the rotating disk (6) to rotate via the rotating connection portion (61); and the rotating disk (6) is engaged with the active sector gear (5) to prevent rotation via a positioning structure.

3. The control method of a car charging cover with a self-locking function according to claim 2, characterized in that: The positioning structure comprises a positioning protrusion (62) and a positioning groove (5b); the positioning protrusion (62) is convexly arranged on the rotating disk (6); the positioning groove (5b) is arranged on the active sector gear (5); and the positioning protrusion (62) and the positioning groove (5b) are in a positioning and anti-rotation cooperation.

4. The control method of a car charging cover with a self-locking function according to claim 2, characterized in that: The guide structure comprises a first guide inclined surface (63a), the rotating disk (6) is provided with a guide block (63) protruding therefrom, the first guide inclined surface (63a) being arranged on a side wall of the guide block (63), and the guide block (63) is guided and matched with the locking assembly via the first guide inclined surface (63a).

5. The control method of a car charging cover with a self-locking function according to claim 4, characterized in that: The locking assembly is provided with a second guiding inclined surface (8a) corresponding to the first guiding inclined surface (63a), and the first guiding inclined surface (63a) is guided and matched with the second guiding inclined surface (8a).

6. The control method of a car charging cover with a self-locking function according to claim 1, characterized in that: The locking assembly comprises a locking member (8) and an elastic member (83); the door cover assembly (2) is provided with a locking hole (2a) corresponding to the locking assembly; the locking member (8) is movably arranged on the base assembly (1); and the elastic member (83) always has a movement tendency to drive the locking member (8) to press against the linkage rotating structure.

7. The control method of a car charging cover with a self-locking function according to claim 6, characterized in that: The linked rotating structure comprises an active sector gear (5) and a rotating disk (6); the rotating disk (6) is provided with a guide block (63); the upper end surface of the guide block (63) is set as a supporting plane (63b); when the locking member (8) is guided and slid onto the supporting plane (63b), the locking member (8) is supported and matched with the supporting plane (63b).

8. The control method of a car charging cover with a self-locking function according to claim 2, characterized in that: An emergency pull cable (9) is slidably provided on the base assembly (1), and the emergency pull cable (9) is connected to the linkage rotating structure through a transmission structure, so as to control the linkage rotating structure to drive the door cover assembly (2) to open.

9. The control method of a car charging cover with a self-locking function according to claim 8, characterized in that: The transmission structure comprises an unlocking block (91) and a pushing block (64); the push block (64) is radially extended on the rotating disk (6); the base assembly (1) is provided with a sliding groove (11b); the unlocking block (91) is guided and matched with the sliding groove (11b); the unlocking block (91) is pushed and matched with the pushing block (64); the unlocking block (91) is fixedly connected with the emergency cable (9); the emergency cable (9) is pulled to control the unlocking block (91) to drive the rotating disk (6) to rotate in the unlocking direction.

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