Small door overturning structure of automobile oil filling port or charging port

Abstract

The utility model discloses a small door turnover structure of an automobile oil filling port or a charging port, which comprises a framework main body, a connecting rod structure and a small door assembly, the framework main body is provided with a driving motor, one end of the connecting rod structure is hinged with the small door assembly, and the other end of the connecting rod structure is rotatably connected to the framework main body through a rotating shaft. An output shaft of the driving motor is coaxially and fixedly provided with a driving part, the driving part is fixedly provided with a driving gear, the driving gear is provided with stirring teeth and a first retention groove, the rotating shaft is coaxially and fixedly provided with a transmission gear, and the transmission gear is provided with abutting teeth and a second retention groove; a locking piece is arranged on the framework body in a sliding mode, and the driving piece is in linkage fit with the locking piece. An elastic reset piece is arranged between the locking piece and the framework main body; the framework body is further provided with a position sensing device used for sensing the position state of the small door assembly. The device has the advantages of being small in installation space occupancy rate and capable of sensing the opening-closing position of the small door assembly in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a small door flip structure of an automobile fuel inlet or charging port. Background Art

[0002] Existing fuel vehicles need to be equipped with a refueling port for refueling, and electric vehicles need to be equipped with a charging port for charging. In order to prevent dust from entering the refueling port or the charging port, and for the sake of aesthetic appearance, a refueling port cap is generally provided at the refueling port to cover the refueling port, and a charging port cap is provided at the charging port to cover the charging port. The above-mentioned refueling port cap and charging port cap are collectively referred to as small door assemblies in the following. For the convenience of use, the existing small door assemblies are provided with an electric drive port cap, and the control module controls the rotation of the drive motor to realize the opening and closing of the small door assembly.

[0003] 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.

[0004] 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 are two separate execution modules. Multiple execution modules occupy a large space and the coordination between them is more troublesome, and the effect of linked opening of the cover cannot be produced, which needs to be improved urgently. Utility Model Content

[0005] The utility model aims to provide a small door flip structure for a car fuel filler or charging port, which has the effects of small installation space occupancy and real-time sensing of the opening and closing position of the small door component.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a small door flip structure of a car refueling port or charging port, comprising a skeleton body, a connecting rod structure and a small door assembly, the skeleton body is provided with a driving motor, one end of the connecting rod structure is hinged with the small door assembly, and the other end of the connecting rod structure is rotatably connected to the skeleton body through a rotating shaft, the output shaft of the driving motor is coaxially fixed with a driving member, the driving member is fixed with a driving gear, the driving gear is provided with a toggle tooth and a first retention groove, the rotating shaft is coaxially fixed with a transmission gear, the transmission gear is provided with an abutment tooth and a second retention groove, the first retention groove is matched with the transmission gear to avoid air, the second retention groove is matched with the toggle tooth to avoid air, the toggle tooth is matched with the abutment tooth stopper and drives the driving gear and the transmission gear to rotate in the opposite direction, so that the gear portion of the driving gear is meshed with the gear portion of the transmission gear;

[0007] A locking member that is slidably provided on the skeleton body and is locked with the small door assembly, and the driving member is linked with the locking member to drive the locking member and the small door assembly to be relatively unlocked; an elastic reset member is provided between the locking member and the skeleton body, and the elastic reset member always has a tendency to drive the locking member and the small door assembly to remain locked;

[0008] The skeleton body is also provided with a position sensing device for sensing the position state of the small door assembly.

[0009] By adopting the above technical solution, in the initial state, the small door assembly is in a closed state relative to the skeleton body, at which time the locking member and the small door assembly are relatively locked, the first retention groove of the driving gear and the second retention groove of the transmission gear avoid each other, the driving motor drives the driving member to rotate, and the driving member drives the driving gear to rotate to perform the unlocking process. During the unlocking process, the toggle tooth of the driving gear rotates in the second retention groove of the transmission gear, and the transmission gear does not rotate. At the same time, the driving member drives the locking member and the small door assembly to unlock each other, and the elastic reset member is compressed to accumulate elastic potential energy; when the locking member unlocks the small door assembly, the driving member drives the toggle tooth of the driving gear to rotate until it contacts the abutting tooth of the transmission gear, and then the small door assembly is opened. The driving motor continues to drive the driving gear to rotate in the same direction through the driving member. Since the toggle tooth of the driving gear cooperates with the stopper of the transmission gear, it drives The transmission gear rotates in the opposite direction to the driving gear, and the driving gear meshes with the gear part of the transmission gear for transmission. The transmission gear drives the connecting rod structure to flip outward through the rotating shaft, thereby realizing the opening process of the small door assembly; the closing process of the small door assembly is opposite to the above process, and the resetting effect of the elastic resetting member is utilized during the closing process to realize the mutual locking of the locking member and the small door assembly. By utilizing the linkage cooperation of the driving member, the driving gear and the transmission gear, the locking member can be unlocked and the small door assembly can be opened and closed by a driving motor, which greatly saves the installation space of the utility model and has a compact structure. In addition, the utility model is provided with a position sensor to sense the opening and closing position of the small door assembly in real time, so that the small door assembly can be alarmed when it is forgotten to be closed after refueling or charging. It has the effects of small installation space occupancy and real-time sensing of the opening and closing position of the small door assembly.

[0010] The utility model is further configured as follows: the locking member includes a lock hook portion and a sliding portion, the skeleton body is provided with a sliding groove corresponding to the sliding portion, the sliding portion is guided and matched with the sliding groove, the small door assembly is provided with a lock hole corresponding to the lock hook portion, and the lock hook portion is locked and matched with the lock hole.

[0011] By adopting the above technical solution, the consistency of the sliding direction of the sliding part of the locking member relative to the skeleton body can be improved. When the small door assembly is in a closed state, the lock hook part is locked in the lock hole of the small door assembly to prevent the small door assembly from being pried open from the outside of the car.

[0012] The utility model is further configured as follows: the skeleton body is provided with a plurality of limit blocks on both sides of the locking member, and the limit blocks on both sides are matched with the locking member in a guiding manner.

[0013] By adopting the above technical solution, the limit blocks on both sides can limit and stop the two sides of the locking member, and the sliding direction of the locking member relative to the skeleton body is more consistent, thereby achieving precise locking of the locking member and the small door assembly during the locking process.

[0014] The utility model is further configured as follows: the driving member includes an unlocking portion, the locking member is provided with an abutting portion corresponding to the unlocking portion, the abutting portion is provided with a guide groove corresponding to the unlocking portion, and the unlocking portion is guided and cooperated with the abutting portion through the guide groove to drive the locking member relatively away from the small door assembly to achieve unlocking.

[0015] By adopting the above technical solution, during the unlocking process, the unlocking part of the driving member will rotate in the guide groove. The guiding effect between the unlocking part and the guide groove can be used to push the locking member away from the driving member, thereby allowing the locking member to unlock the small door assembly.

[0016] The utility model is further configured as follows: the position sensing device comprises a position switch electrically connected to the control module, the position switch is fixedly connected to the skeleton body, and the position switch is in contact with and cooperates with the connecting rod structure.

[0017] By adopting the above technical solution, when the small door assembly is in a closed state, the position switch and the connecting rod structure are in contact with each other, and the control module will not send out an alarm signal after receiving the closing signal of the position switch. When the small door assembly is in an open state, the position switch will feed back the opening signal of the small door assembly to the control module and send out an alarm signal, thereby effectively preventing the small door assembly from not being closed at the end of refueling or charging.

[0018] The utility model is further configured as follows: the skeleton body is provided with a button switch electrically connected to the control module, and the button switch is control-connected to the drive motor through the control module.

[0019] By adopting the above technical solution and adding a button switch, when refueling or charging of the car is finished, the button switch can be pressed from the outside of the car to automatically close the small door assembly, thereby improving the convenience of the driver in closing the small door assembly.

[0020] The utility model is further configured as follows: a limit shaft is extended from the middle of the driving member, a stop groove is opened on the driving gear corresponding to the limit shaft, and the driving gear is prevented from rotating by the stop groove and sleeved on the limit shaft.

[0021] By adopting the above technical solution, the driving member and the driving gear can be produced separately and then assembled. In addition, the driving gear of the small door assembly will wear out after multiple opening and closing. The split design of the driving gear and driving member makes it convenient to replace the driving gear separately later, reducing the cost of replacing parts, and also conforming to the concept of greening and environmental protection.

[0022] The utility model is further configured as follows: the skeleton body comprises a hard rubber skeleton and a soft rubber mouth cover, and the soft rubber mouth cover is integrally formed on the hard rubber skeleton.

[0023] By adopting the above technical scheme, the hard rubber skeleton can improve the support and anti-collision performance, the soft rubber mouth cover can have a certain shock absorption and sealing effect, and at the same time can also improve the sound insulation performance of the utility model. The one-piece hard rubber skeleton and soft rubber mouth cover can prevent the soft rubber mouth cover from falling off relative to the hard rubber skeleton.

[0024] The utility model is further configured as follows: the skeleton body is provided with an emergency unlocking module, the emergency unlocking module includes a pull cable and a push block, one end of the push block is fixedly connected to the pull cable, and the other end of the push block is pushed and cooperated with the driving member to drive the driving member to rotate the driving gear.

[0025] By adopting the above technical solution, the emergency unlocking module can provide the driver with the condition to manually open the small door assembly when the small door assembly cannot be opened electrically due to a lack of power in the vehicle or other emergency situations. The driver can pull the cable to make the cable push the driving member to rotate through the pushing block, thereby replacing the rotational driving force of the driving motor on the driving member, thereby realizing emergency opening of the small door assembly.

[0026] The utility model is further configured as follows: the driving member is provided with a mating portion extending outward, the skeleton body is fixedly provided with a gear cover, the gear cover is provided with a sliding hole corresponding to the pushing block, the pushing block is slidably arranged in the sliding hole, and the pushing block is engaged with the mating portion stopper.

[0027] By adopting the above technical solution, the gear cover is used to install the push block, so that the push block can be guided and slid in the sliding hole of the gear cover, thereby improving the sliding direction of the push block, thereby ensuring that in an unexpected situation, pulling the cable can enable the push block to drive the driving member to rotate normally.

[0028] In summary, the utility model has the following beneficial effects:

[0029] 1. A driving motor and a transmission gear are arranged on the skeleton body, the output shaft of the driving motor is coaxially fixed with the driving member, the driving gear is fixed on the driving member, the small door assembly is flipped and arranged on the skeleton body through a connecting rod structure, one end of the connecting rod structure is rotatably connected to the skeleton body through a rotating shaft, the driving gear is provided with a toggle tooth and a first retention groove, the transmission gear is provided with abutment teeth and a second retention groove, and a locking member that is locked with the small door assembly is slidably arranged on the skeleton body, and the linkage cooperation between the driving gear and the transmission gear and the linkage cooperation between the locking member and the driving member is utilized, so that after the locking member unlocks the small door assembly, the driving gear continues to rotate and realizes the automatic opening of the small door assembly, and the locking member can be unlocked and the small door assembly can be opened and closed by one driving motor, which greatly saves the installation space of the utility model, has a compact structure, and has the effect of small installation space occupancy rate.

[0030] 2. A position switch for sensing the opening and closing position of the small door assembly is set on the skeleton body. The position switch is electrically connected to the control module of the car. The position switch contacts and cooperates with the connecting rod structure. The real-time position of the small door assembly is sensed by the position switch and fed back to the control module. When the small door assembly is not closed at the end of refueling or charging, an alarm is issued. It has the effect of sensing the opening and closing position of the small door assembly in real time.

[0031] 3. A button switch electrically connected to the control module is set on the skeleton body. The button switch is connected to the drive motor control through the control module, so that when the car is refueled or charged, the button switch can be pressed from the outside of the car to automatically close the small door assembly, which has the effect of improving the convenience of the driver in closing the small door assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of the utility model, and the small door assembly is in a closed state.

[0033] Figure 2 This utility model Figure 1 Another view of .

[0034] Figure 3 It is an exploded view of the utility model.

[0035] Figure 4 It is a structural diagram of the utility model, and the small door assembly is in an open state.

[0036] Figure 5 It is an internal connection diagram of the driving member, driving gear, transmission gear and locking member of the utility model, and the small door assembly is in a closed state.

[0037] Figure 6 This is a connection state diagram of the driving member, the driving gear, the transmission gear and the locking member in the locked state of the utility model.

[0038] Figure 7 This is a connection state diagram of the driving member, the driving gear, the transmission gear and the locking member in the unlocked state of the utility model.

[0039] Figure 8 This is a connection state diagram of the driving member, the driving gear, the transmission gear and the locking member when the small door assembly of the utility model is in an open state.

[0040] Fig. 9 It is a connection diagram of the emergency unlocking module and the gear cover of the utility model.

[0041] In the figure: 1, skeleton body; 1a, sliding groove; 101, hard rubber skeleton; 102, soft rubber cover; 10, driving motor; 11, driving member; 111, unlocking part; 112, limiting shaft; 113, matching part; 12, driving gear; 12a, first retention groove; 12b, anti-rotation groove; 121, toggle tooth; 13, locking member; 1301, lock hook part; 1302, sliding part; 131, abutting part; 1 31a, guide groove; 131b, transition surface; 14, elastic reset member; 15, position switch; 16, push button switch; 17, limit block; 2, connecting rod structure; 21, first connecting rod; 22, second connecting rod; 3, small door assembly; 3a, lock hole; 4, rotating shaft; 41, transmission gear; 41a, second retention groove; 411, abutment tooth; 5, cable; 51, push block; 6, gear cover; 6a, sliding hole. DETAILED DESCRIPTION

[0042] The utility model is further described below in conjunction with the accompanying drawings.

[0043] A small door flip structure for a car fuel inlet or charging port, such as Figure 1-6 As shown, it includes a skeleton body 1, a connecting rod structure 2 and a small door assembly 3, the connecting rod structure 2 includes a first connecting rod 21 and a second connecting rod 22, the skeleton body 1 is provided with a driving motor 10, one end of the first connecting rod 21 and the second connecting rod 22 is hinged to the small door assembly 3, the other end of the first connecting rod 21 and the second connecting rod 22 is rotatably connected to the skeleton body 1 through a corresponding rotating shaft 4, the output shaft of the driving motor 10 is coaxially fixed with a driving member 11, the driving member 11 is fixed with a driving gear 12, the driving gear 12 is provided with a toggle tooth 121 and a first retention groove 12a, the end of the rotating shaft 4 corresponding to the first connecting rod 21 is coaxially fixed with a transmission gear 41, the transmission gear 41 is provided with abutting teeth 411 and a second retention groove 41a, the first connecting rod 21 is provided with a driving gear 41, and the driving gear 41 is provided with abutting teeth 411 and a second retention groove 41a. A retention groove 12a cooperates with the second retention groove 41a to avoid air, and the toggle tooth 121 cooperates with the abutment tooth 411 to stop and drive the driving gear 12 and the transmission gear 41 to rotate in the opposite direction, so that the gear portion of the driving gear 12 is meshed with the gear portion of the transmission gear 41; a locking member 13 that is locked with the small door assembly 3 is slidably provided on the skeleton body 1, and the driving member 11 cooperates with the locking member 13 to drive the locking member 13 and the small door assembly 3 to be relatively unlocked; an elastic reset member 14 is provided between the locking member 13 and the skeleton body 1, and the elastic reset member 14 always has a tendency to drive the locking member 13 and the small door assembly 3 to remain locked; the skeleton body 1 is also provided with a position sensing device for sensing the position state of the small door assembly 3.

[0044] like Figure 2-7As shown, the locking member 13 includes a lock hook portion 1301 and a sliding portion 1302. The skeleton body 1 is provided with a sliding groove 1a corresponding to the sliding portion 1302. The sliding portion 1302 is guided and matched with the sliding groove 1a. The small door assembly 3 is provided with a lock hole 3a corresponding to the lock hook portion 1301. The lock hook portion 1301 is locked and matched with the lock hole 3a, which can improve the consistency of the sliding direction of the sliding portion 1302 of the locking member 13 relative to the skeleton body 1. When the small door assembly 3 is in a closed state, The lock hook portion 1301 is locked in the lock hole 3a of the small door assembly 3 to prevent the small door assembly 3 from being pried open from the outside of the car; the skeleton body 1 is provided with a plurality of limit blocks 17 on both sides of the locking member 13, and the limit blocks 17 on both sides cooperate with the guide of the locking member 13. The limit blocks 17 on both sides can limit and stop the two sides of the locking member 13, and the sliding direction of the locking member 13 relative to the skeleton body 1 is more consistent, thereby realizing the precise locking of the locking member 13 and the small door assembly 3 during the locking process.

[0045] like Figure 5-8 As shown, the driving member 11 includes an unlocking portion 111, the outer wall of the unlocking portion 111 is set as a smooth arc surface, the locking member 13 is provided with an abutting portion 131 corresponding to the unlocking portion 111, and the abutting portion 131 is provided with a guide groove 131a corresponding to the unlocking portion 111, and the guide groove 131a is set as an arc surface recessed inwardly corresponding to the unlocking portion 111, and the unlocking portion 111 is guided and matched with the abutting portion 131 through the guide groove 131a, so as to drive the locking member 13 to move relatively away from the small door assembly 3 to achieve unlocking. During the unlocking process, the unlocking portion 111 of the driving member 11 will rotate in the guide groove 131a, and the guiding effect between the unlocking portion 111 and the guide groove 131a can be used to push the locking member 13 away from the driving member 11, thereby allowing the locking member 13 to unlock the small door assembly 3. In addition, the abutting portion 131 is provided with a through hole at one end of the guide groove 131a that supports and cooperates with the unlocking portion 111. The transition surface 131b can ensure that before the gear parts of the driving gear 12 and the transmission gear 41 are meshed with each other, the locking member 13 will not be reset, causing the locking member 13 and the driving gear 12 or the driving member 11 to be stuck, thereby ensuring the stable operation of the utility model; a limit shaft 112 is extended from the middle part of the driving member 11, and a stop groove 12b is provided on the driving gear 12 corresponding to the limit shaft 112. The driving gear 12 is stop-rotated on the limit shaft 112 through the stop groove 12b, so that the driving member 11 and the driving gear 12 can be produced separately and then assembled. In addition, the driving gear 12 of the small door assembly 3 will be worn after being opened and closed many times. The split design of the driving gear 12 and the driving member 11 facilitates the subsequent replacement of the driving gear 12 separately, reduces the replacement cost of components, and also conforms to the concept of greening and environmental protection.

[0046] like Figure 3-4As shown, the position sensing device includes a position switch 15 electrically connected to the control module, the position switch 15 is fixedly connected to the skeleton body 1, and the position switch 15 is in contact with the connecting rod structure 2. When the small door assembly 3 is in a closed state, the position switch 15 and the connecting rod structure 2 are in contact with each other. The control module receives the closing signal of the position switch 15 and does not send an alarm signal. When the small door assembly 3 is in an open state, the position switch 15 feeds back the opening signal of the small door assembly 3 to the control module and sends an alarm signal, which effectively prevents the small door assembly 3 from not being closed at the end of refueling or charging; the skeleton body 1 is provided with a button switch 16 electrically connected to the control module, and the button switch 16 is controlled by the control module The button switch 16 is connected to the driving motor 10 for control, so that when the car is refueled or charged, the button switch 16 can be pressed from the outside of the car to automatically close the small door assembly 3, thereby improving the convenience for the driver to close the small door assembly 3; the skeleton body 1 includes a hard rubber skeleton 101 and a soft rubber cover 102, and the soft rubber cover 102 is integrally formed on the hard rubber skeleton 101. The hard rubber skeleton 101 can improve the support and anti-collision performance, and the soft rubber cover 102 can have a certain shock absorption and sealing effect, and can also improve the sound insulation performance of the utility model. The integrally formed hard rubber skeleton 101 and soft rubber cover 102 can prevent the soft rubber cover 102 from falling off relative to the hard rubber skeleton 101.

[0047] like Fig. 9 As shown, the skeleton body 1 is provided with an emergency unlocking module, which includes a cable 5 and a push block 51. One end of the push block 51 is fixedly connected to the cable 5, and the other end of the push block 51 pushes and cooperates with the driving member 11, driving the driving member 11 to drive the driving gear 12 to rotate in the same direction. The emergency unlocking module can provide the driver with a condition to manually open the small door assembly 3 when the small door assembly 3 cannot be opened electrically due to power failure or other emergency situations of the car. The driver can pull the cable 5 so that the cable 5 pushes the driving member 11 to rotate through the push block 51, replacing the rotation of the driving member 11 by the driving motor 10. The driving force is turned to realize the emergency opening of the small door assembly 3; the driving member 11 extends outwardly and is provided with a matching portion 113, the skeleton body 1 is fixedly provided with a gear cover 6, the gear cover 6 is provided with a sliding hole 6a corresponding to the push block 51, the push block 51 is slidably arranged in the sliding hole 6a, the push block 51 cooperates with the matching portion 113 stopper, the gear cover 6 is used to install the push block 51, so that the push block 51 can be guided and slid in the sliding hole 6a of the gear cover 6, thereby improving the sliding direction of the push block 51, and thereby ensuring that in an unexpected situation, pulling the cable 5 can enable the push block 51 to drive the driving member 11 to rotate normally.

[0048] The basic working principle of the utility model is as follows: in the initial state, the small door assembly 3 is in a closed state relative to the skeleton main body 1, at this time, the locking member 13 is relatively locked with the small door assembly 3, the first retention groove 12a of the driving gear 12 and the second retention groove 41a of the transmission gear 41 avoid each other, the driving motor 10 drives the driving member 11 to rotate, and the driving member 11 drives the driving gear 12 to rotate to perform the unlocking process. During the unlocking process, the toggle tooth 121 of the driving gear 12 rotates in the second retention groove 41a of the transmission gear 41, and the transmission gear 41 does not rotate. At the same time, the driving member 11 drives the locking member 13 and the small door assembly 3 to unlock each other, and the elastic reset member 14 is compressed to accumulate elastic potential energy; when the locking member 13 unlocks the small door assembly 3, the driving member 11 drives the toggle tooth 121 of the driving gear 12 to rotate until it contacts the abutting tooth 411 of the transmission gear 41, and then the small door assembly 3 is opened, and the driving motor 10 continues to drive the driving gear 12 to rotate in the same direction through the driving member 11. Due to the The toggle tooth 121 cooperates with the stopper of the transmission gear 41 to drive the transmission gear 41 to rotate in the opposite direction relative to the driving gear 12, and the driving gear 12 is meshed with the gear part of the transmission gear 41 for transmission, and the transmission gear 41 drives the connecting rod structure 2 to flip outward through the rotating shaft 4, thereby realizing the opening process of the small door assembly 3; the closing process of the small door assembly 3 is opposite to the above process, and the resetting effect of the elastic resetting member 14 is utilized in the closing process to realize the mutual locking of the locking member 13 and the small door assembly 3, and the linkage cooperation of the driving member 11, the driving gear 12 and the transmission gear 41 is utilized, and the unlocking of the locking member 13 and the opening and closing of the small door assembly 3 can be realized by a driving motor 10, which greatly saves the installation space of the utility model and has a compact structure. In addition, the utility model is provided with a position sensor to sense the opening and closing position of the small door assembly 3 in real time, so that the small door assembly 3 can be alarmed when it is forgotten to be closed after refueling or charging, and has the effect of small installation space occupancy rate and real-time sensing of the opening and closing position of the small door assembly.

[0049] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A small door flip structure for a fuel filler or charging port of an automobile, comprising a skeleton body (1), a connecting rod structure (2) and a small door assembly (3), wherein the skeleton body (1) is provided with a driving motor (10), one end of the connecting rod structure (2) is hinged to the small door assembly (3), and the other end of the connecting rod structure (2) is rotatably connected to the skeleton body (1) via a rotating shaft (4), characterized in that: The output shaft of the driving motor (10) is coaxially fixed with a driving member (11), the driving member (11) is fixed with a driving gear (12), the driving gear (12) is provided with a toggle tooth (121) and a first retention groove (12a), the rotating shaft (4) is coaxially fixed with a transmission gear (41), the transmission gear (41) is provided with a contact tooth (411) and a second retention groove (41a), the first retention groove (12a) and the transmission gear (41) are matched to avoid air, the second retention groove (41a) and the toggle tooth (121) are matched to avoid air, the toggle tooth (121) and the contact tooth (411) are matched to stop and drive the driving gear (12) and the transmission gear (41) to rotate in opposite directions, so that the gear portion of the driving gear (12) is meshed with the gear portion of the transmission gear (41); A locking member (13) is slidably provided on the skeleton body (1) and is locked with the small door assembly (3); the driving member (11) cooperates with the locking member (13) to drive the locking member (13) and the small door assembly (3) to be relatively unlocked; an elastic reset member (14) is provided between the locking member (13) and the skeleton body (1); the elastic reset member (14) always has a tendency to drive the locking member (13) and the small door assembly (3) to remain locked; The skeleton body (1) is also provided with a position sensing device for sensing the position state of the small door assembly (3).

2. The small door flip structure of a car fuel inlet or charging port according to claim 1, characterized in that: The locking member (13) comprises a locking hook portion (1301) and a sliding portion (1302); the skeleton body (1) is provided with a sliding groove (1a) corresponding to the sliding portion (1302); the sliding portion (1302) is guided and matched with the sliding groove (1a); the small door assembly (3) is provided with a locking hole (3a) corresponding to the locking hook portion (1301); the locking hook portion (1301) is locked and matched with the locking hole (3a).

3. The small door flip structure of a car fuel inlet or charging port according to claim 1, characterized in that: The skeleton body (1) is provided with a plurality of limit blocks (17) on both sides of the locking member (13), and the limit blocks (17) on both sides are guided and matched with the locking member (13).

4. The small door flip structure of a car fuel inlet or charging port according to claim 1, characterized in that: The driving member (11) comprises an unlocking portion (111), the locking member (13) is provided with an abutting portion (131) corresponding to the unlocking portion (111), the abutting portion (131) is provided with a guide groove (131a) corresponding to the unlocking portion (111), and the unlocking portion (111) is guided and matched with the abutting portion (131) through the guide groove (131a) to drive the locking member (13) relatively away from the small door assembly (3) to achieve unlocking.

5. The small door flip structure of a car fuel inlet or charging port according to claim 1, characterized in that: The position sensing device comprises a position switch (15) electrically connected to the control module, the position switch (15) is fixedly connected to the skeleton body (1), and the position switch (15) is in contact with the connecting rod structure (2).

6. The small door flip structure of a car fuel inlet or charging port according to claim 1, characterized in that: The skeleton body (1) is provided with a button switch (16) electrically connected to the control module, and the button switch (16) is controllably connected to the drive motor (10) via the control module.

7. The small door flip structure of a car fuel inlet or charging port according to claim 1, characterized in that: A limit shaft (112) is extended from the middle of the driving member (11), and a rotation-stopping groove (12b) is provided on the driving gear (12) corresponding to the rotation-stopping groove (12b). The driving gear (12) is rotation-stoppedly sleeved on the limit shaft (112) via the rotation-stopping groove (12b).

8. The small door flip structure of a car fuel inlet or charging port according to claim 1, characterized in that: The skeleton body (1) comprises a hard rubber skeleton (101) and a soft rubber mouth cover (102), and the soft rubber mouth cover (102) is integrally formed on the hard rubber skeleton (101).

9. The small door flip structure of a car fuel inlet or charging port according to claim 1, characterized in that: The skeleton body (1) is provided with an emergency unlocking module, which comprises a cable (5) and a push block (51), one end of the push block (51) is fixedly connected to the cable (5), and the other end of the push block (51) is pushed and matched with the driving member (11), so that the driving member (11) drives the driving gear (12) to rotate.

10. The small door flip structure of a car fuel filler or charging port according to claim 9, characterized in that: The driving member (11) is extended outwardly to be provided with a matching portion (113); the skeleton body (1) is fixedly provided with a gear cover (6); the gear cover (6) is provided with a sliding hole (6a) corresponding to the pushing block (51); the pushing block (51) is slidably arranged in the sliding hole (6a); and the pushing block (51) is engaged with the matching portion (113) in a stopper manner.

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