Door lock with refueling or charging port

Abstract

The invention provides a refueling or charging port door lock. The refueling or charging port door lock comprises a shell, a lifting shaft, a driving part, a spiral transmission mechanism and a track control mechanism. The spiral transmission mechanism is connected between the lifting shaft and the driving piece so that the driving piece can rotate to drive the lifting shaft to move relative to the shell. The track control mechanism is connected between the lifting shaft and the shell, and the track control mechanism is configured to limit the lifting shaft to move along a preset motion track when the lifting shaft moves relative to the shell. According to the refueling or charging port door lock, the lifting shaft is driven to move through the single-screw transmission mechanism, so that the refueling or charging port is opened or closed, the lifting shaft does not spirally move relative to the shell any more, and the door lock does not have self-locking performance. Therefore, after the refueling or charging port door lock is opened, an operator can directly close the refueling or charging port door lock by pushing the refueling or charging port cover when refueling or charging is carried out outside the vehicle, and operation is convenient and reasonable.

Description

Technical Field

[0001] The present application relates to a door lock, and more particularly to a door lock for a refueling or charging port of a car. Background Art

[0002] A fuel-powered vehicle is provided with a refueling port for supplying fuel or oil, and an electric vehicle is also provided with a charging port for supplying electricity. The current refueling or charging port is covered by a door cover, and the door cover is locked on the refueling or charging port by a door lock. By controlling the movement of the door lock, when refueling or charging is needed, the door cover can be opened to expose the refueling or charging port, and then the fuel or electricity is replenished to the vehicle through the refueling or charging port. Or after refueling or charging is completed, the door cover is closed to close the refueling or charging port. Summary of the invention

[0003] The present application provides a refueling or charging port door lock, comprising: a shell, a lifting shaft, a driving member, a spiral transmission mechanism and a trajectory control mechanism. The lifting shaft moves relative to the shell. The driving member is arranged in the shell, and the driving member can be driven to rotate. The spiral transmission mechanism is connected between the lifting shaft and the driving member so that the driving member can rotate to drive the lifting shaft to move relative to the shell. The trajectory control mechanism is connected between the lifting shaft and the shell, and the trajectory control mechanism is configured to limit the lifting shaft to move along a predetermined motion trajectory when the lifting shaft moves relative to the shell.

[0004] According to the above, the trajectory control mechanism is configured to prevent the lifting shaft from performing spiral motion.

[0005] According to the above, the lifting shaft has an open position and a closed position. The driving member includes a disk portion and a rod portion, the disk portion and the rod portion are connected to rotate together, wherein the disk portion is used to cooperate with a motor so that the motor can drive the disk portion to rotate, and the spiral transmission mechanism is connected between the lifting shaft and the rod portion of the driving member. The lifting shaft, the driving member and the motor are configured such that: the motor can rotate in a forward direction to drive the lifting shaft from the closed position to the open position through the driving member, and in the process of the lifting shaft moving from the open position to the closed position, the lifting shaft can drive the driving member to rotate to drive the motor to rotate in the reverse direction.

[0006] According to the above content, the refueling or charging port door lock also includes: a gear transmission mechanism, and the disk portion of the driving member cooperates with the motor through the gear transmission mechanism so that the motor and the disk portion can drive each other to rotate.

[0007] According to the above content, the gear transmission mechanism includes a tooth portion and an output gear. The tooth portion is arranged on the circumferential edge of the disc portion. The output gear is connected to the motor. The tooth portion and the output gear cooperate so that the motor can drive the disc portion to rotate.

[0008] According to the above content, the gear transmission mechanism also includes a transmission gear device, which is transmission-connected between the output gear and the disk portion, so that the rotation of any one of the output gear and the disk portion can drive the transmission gear device to rotate, thereby enabling the transmission gear device to drive the other of the output gear and the disk portion to rotate.

[0009] According to the above, the transmission gear device includes one or more transmission gears.

[0010] According to the above content, the spiral transmission mechanism includes: at least one spiral groove and at least one driving pin. The spiral groove extends in a spiral shape. The driving pin slides in the corresponding spiral groove.

[0011] According to the above, the lifting shaft has a channel inside, and the lifting shaft is sleeved outside the rod so that the rod is inserted into the channel. The at least one spiral groove is arranged on the outer wall of the rod, and the at least one driving pin is formed by the inner wall of the lifting shaft that defines the channel protruding inward.

[0012] According to the above content, the trajectory control mechanism includes: a trajectory control groove and a limit pin. The trajectory control groove corresponds to the predetermined motion trajectory, and the trajectory control groove includes a first section groove and a second section groove that are connected. The limit pin slides in the trajectory control groove to control the predetermined motion trajectory of the lifting shaft relative to the shell when the rod rotates. Wherein, the trajectory control mechanism is configured as follows: when the limit pin slides in the first section groove, the lifting shaft moves roughly along the circumferential direction of the rod; and when the limit pin slides in the second section groove, the lifting shaft moves roughly along the axial direction of the rod.

[0013] According to the above content, the first section groove includes a transverse groove extending along the circumference of the lifting shaft, and the second section groove includes a longitudinal groove extending along the axial direction of the lifting shaft. The trajectory control groove also includes a connecting groove, which connects the top end or the bottom end of the longitudinal groove with one end of the transverse groove.

[0014] According to the above content, the connecting groove is in an arc shape.

[0015] According to the above content, the first section groove further includes a first extension groove, which is connected to the end of the transverse groove and extends in the axial direction of the lifting shaft in the opposite direction to the longitudinal groove. And the second section groove includes a second extension groove, which is connected to the end of the longitudinal groove and extends in the axial direction of the lifting shaft in the opposite direction to the transverse groove.

[0016] According to the above content, the refueling or charging port door lock also includes a track sleeve. The track sleeve is sleeved outside the lifting shaft and connected to the housing, and the track sleeve is fixed relative to the housing. The track control groove is arranged on the track sleeve, and the limit pin is arranged on the outer wall of the lifting shaft.

[0017] According to the above content, the refueling or charging port door lock further includes a motor. The motor is configured to drive the driving member to rotate, wherein the motor can be driven by an electrical signal or a mechanical signal to rotate forward or reverse.

[0018] According to the above content, the lifting shaft has a head, and the head is used to assemble the refueling and charging port door cover. The lifting shaft is configured such that: when the lifting shaft is in the open position, the refueling and charging port door cover exposes the refueling or charging port for supplying fuel or electricity; and when the lifting shaft is in the closed position, the refueling and charging port door cover closes the refueling or charging port.

[0019] According to the above, the housing has a cavity, a part of the lifting shaft is accommodated in the cavity, the head of the lifting shaft extends out of the cavity, and the driving member and the motor are accommodated in the cavity. The housing is fixed so that when the lifting shaft moves, the lifting shaft moves relative to the housing.

[0020] According to the above, the housing cavity of the housing is configured to accommodate the driving member and the motor and to limit the axial movement of the driving member and the motor.

[0021] Other objects and advantages of the present application will be apparent from the following description of the present application with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1A A three-dimensional structural diagram of a refueling or charging port door lock in a closed state according to an embodiment of the present application;

[0023] Figure 1B for Figure 1A The three-dimensional structure diagram of the refueling or charging port door lock when it is open;

[0024] Figure 2A for Figure 1A Exploded view of the fuel or charging port door lock shown;

[0025] Figure 2B for Figure 1A The three-dimensional structure diagram of the refueling or charging port door lock with the shell removed;

[0026] Figure 2C for Figure 1A A cross-sectional view of the refueling or charging port door lock shown along the axial direction of the lifting shaft and the output gear;

[0027] Figure 2D for Figure 1B A cross-sectional view of the refueling or charging port door lock shown along the axial direction of the lifting shaft;

[0028] Figure 3A for Figure 2A A three-dimensional structural diagram of a driving member in FIG.

[0029] Figure 3B for Figure 3A An axial cross-sectional view of the drive member shown;

[0030] Figure 4A for Figure 2A A three-dimensional structural diagram of the lifting shaft in FIG.

[0031] Figure 4B for Figure 4A An axial cross-sectional view of the lifting shaft in FIG.

[0032] Figure 5A for Figure 2A A three-dimensional structural diagram of the track sleeve in FIG.

[0033] Figure 5B for Figure 5A A front view of the track sleeve in FIG.

[0034] Fig. 6A for Figure 2A A three-dimensional structural diagram of a seat body at one angle;

[0035] Figure 6B for Figure 2A A three-dimensional structural diagram of the seat body from another angle;

[0036] Fig. 7A The main view of the refueling or charging port door lock when the refueling or charging port door lock is in the closed state;

[0037] Figure 7B for Fig. 7A Left side view of the refueling or charging port door lock without the housing, motor and drive gear;

[0038] Fig. 8AThe main view of the refueling or charging port door lock when the refueling or charging port door lock is in the process of opening;

[0039] Figure 8B for Fig. 8A Left side view of the refueling or charging port door lock without the housing, motor and drive gear;

[0040] Fig. 9A The main view of the refueling or charging port door lock when the refueling or charging port door lock is in the open state;

[0041] Fig. 9B for Fig. 9A Left side view of the refueling or charging port door lock without the housing, motor and drive gear;

[0042] Fig.10 This is a three-dimensional structural diagram of a refueling or charging port door lock without a shell according to another embodiment of the present application;

[0043] Fig.11A A three-dimensional diagram of a driving member, a track sleeve, and a lifting shaft in a refueling or charging port door lock when the refueling or charging port door lock is in a closed state according to another embodiment of the present application;

[0044] Fig. 11B for Fig.11A A side view of the track sleeve and the lifting shaft in FIG.

[0045] Fig. 12A A three-dimensional diagram of a driving member, a track sleeve, and a lifting shaft in a refueling or charging port door lock when the refueling or charging port door lock is in an open state according to another embodiment of the present application;

[0046] Fig. 12B for Fig. 12A Side view of the track sleeve and lifting shaft in Figure 2. DETAILED DESCRIPTION

[0047] Various specific embodiments of the present application will be described below with reference to the accompanying drawings that form a part of this specification. It should be understood that although terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., are used in this application to describe various example structural parts and elements of the present application, these terms are used here only for the purpose of convenience of description and are determined based on the example orientations shown in the accompanying drawings. Since the embodiments disclosed in the present application can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations.

[0048] Figure 1A and Figure 1B The general structure of a refueling or charging port door lock 100 according to an embodiment of the present application is shown. Figure 1A and Figure 1B The three-dimensional structures of the refueling or charging port door lock 100 in a closed state and an open state are respectively shown.

[0049] like Figure 1A and Figure 1B As shown, the refueling or charging port door lock 100 (hereinafter referred to as the door lock 100) includes a housing 101, and the housing 101 includes a base 102 and a cover 103, and the cover 103 is detachably connected to the bottom of the base 102. The housing 101 is used to be fixedly installed to the vehicle, for example, installed to the vehicle body near the refueling or charging port of the vehicle.

[0050] The door lock 100 further includes a lifting shaft 108. The lifting shaft 108 has a head 105. The housing 101 has a cavity 207 (see Figure 2C As shown in the figure), a portion of the lifting shaft 108 is accommodated in the cavity 207, and the head 105 extends out of the cavity 207, and is used to connect with the refueling or charging port cover (not shown in the figure), so that the door lock 100 can drive the refueling or charging port cover to move through the movement of the lifting shaft 108. When the door lock 100 is installed on the vehicle, the shell 101 is connected to the vehicle and is fixed. The lifting shaft 108 can move relative to the shell 101, and thereby drive the refueling or charging port cover to move relative to the refueling or charging port on the vehicle to cover or expose the refueling or charging port. For the convenience of description, the rising (or upward), descending (or downward) or rotational movement mentioned below are all relative to the fixed shell 101. In this embodiment, the lifting shaft 108 has the following Figure 1A The closed position shown and Figure 1B The lifting shaft 108 can move from the closed position to the open position through an upward and rotating movement, and the lifting shaft 108 can move from the open position to the closed position through a rotating and descending movement.

[0051] In this embodiment, the housing 101 is configured to match the shape of the internal components of the door lock 100 to limit the axial movement of each component. Only the lifting shaft 108 can move up or down in the axial direction, while other components cannot move axially. Specifically, the base 102 includes a cylinder 104 and a cylinder 106 arranged side by side. At the angle shown in the figure, the cylinder 104 is located on the right side of the cylinder 106. The cylinder 104 is mainly used to accommodate the motor 221 and the output gear 222 in the gear transmission mechanism (see Figure 2A The cylinder 106 is mainly used to accommodate the tooth portion 313 in the gear transmission mechanism (see Figure 3A As shown), the drive member 218, the lifting shaft 108 and the trajectory control mechanism (see Figure 2A-2BThe track sleeve 230, track control groove 231 and limit pin 241 shown in the figure are provided and are configured to match the shapes thereof. The lifting shaft 108 and the driving member 218 are connected by a screw transmission mechanism (see Figure 2D and Figure 3A As shown in the figure, the motor 221 can drive the driving member 218 to rotate through the gear transmission mechanism, thereby driving the lifting shaft 108 to rise, fall and rotate. The trajectory control mechanism is used to limit the movement trajectory of the lifting shaft. This will be described in detail later in conjunction with the specific structure of each component.

[0052] Figure 2A-2D The internal structure of the refueling or charging port door lock is shown. Figure 2A An exploded view of the door lock 100 is shown, Figure 2B FIG. 1 shows a three-dimensional structural diagram of the door lock 100 after the housing 101 is removed. Figure 2C An axial cross-sectional view of the door lock 100 in a closed state is shown, Figure 2D FIG. 1 shows an axial cross-sectional view of the door lock 100 in an open state. Figure 2C The axial cross-sectional view shown is obtained by cutting the door lock 100 along the axis x and the axis y. Figure 2D In the axial cross-sectional view shown, in order to more clearly show the driving pin 242 and the limiting pin 241 , the door lock 100 is only cut along the axis x at the driving pin 242 and the limiting pin 241 .

[0053] like Figure 2A-2D As shown, the interior of the door lock 100 includes a motor 221 and an output gear 222, and the motor 221 and the output gear 222 are accommodated in the portion of the cavity 207 defined by the cylinder 104. The drive shaft 228 of the motor 221 extends vertically downward, and the output gear 222 is connected to the bottom end of the drive shaft 228 of the motor 221. The drive shaft 228 has an axis y, and the motor 221 drives the output gear 222 to rotate in a first direction or a second direction around the axis y through the drive shaft 228. The second direction is opposite to the first direction, for example, if the first direction is clockwise, the second direction is counterclockwise.

[0054] The interior of the door lock 100 also includes a lifting shaft 108, a driving member 218 and a track sleeve 230, and the lifting shaft 108, the driving member 218 and the track sleeve 230 are located on the left side of the motor 221 and the output gear 222 to be accommodated in the portion of the cavity 207 defined by the cylinder 106, and the head 105 of the lifting shaft 108 extends out of the cylinder 106. The driving member 218 and the lifting shaft 108 have a common axis x and are symmetrical relative to the axis x. The driving member 218 includes a disk portion 211 located at the bottom and a rod portion 212 located at the top, and the disk portion 211 and the rod portion 212 are connected to rotate together around the axis x. In this embodiment, the disk portion 211 and the rod portion 212 are formed in one piece. The tooth portion 313 is arranged at the circumferential edge of the disk portion 211 around the axis x. The tooth portion 313 cooperates with the output gear 222 so that the rotation of the output gear 222 can drive the disk portion 211 to rotate, thereby driving the rod portion 212 to rotate together. In this embodiment, the axis x and the axis y are arranged in parallel. The disk portion 211 and the output gear 222 are arranged side by side, and the tooth portion 313 and the output gear 222 are meshed with each other to rotate around their respective axes in the same rotation plane. In other embodiments, the disk portion 211 and the motor 221 can also be connected by other transmission gear devices so that they are not in the same rotation plane.

[0055] In the present embodiment, the interior of the lifting shaft 108 is hollow so as to be sleeved on the exterior of the rod 212. The door lock 100 includes a spiral transmission mechanism, which is connected between the lifting shaft 108 and the rod 212 of the driving member 218, so that the rotation of the rod 212 can drive the lifting shaft 108 to move relative to the housing 101, and the movement of the lifting shaft 108 relative to the housing 101 can also drive the rod 212 to move. In the present embodiment, the spiral transmission mechanism is used to enable the lifting shaft 108 and the rod 212 to rotate together, and also to perform relative motion, such as relative spiral motion. As a specific example, the spiral transmission mechanism includes at least one spiral groove 315 (see FIG. 315 ) provided on the outer wall of the rod 212. Figure 3A As shown in the figure, and at least one driving pin 242 is arranged on the inner wall of the lifting shaft 108, and the spiral groove 315 and the driving pin 242 are correspondingly and cooperatively arranged so that the lifting shaft 108 and the rod 212 can drive each other to perform relative spiral motion. It can be understood by those skilled in the art that, in other embodiments, the spiral transmission mechanism can also include a driving pin arranged on the outer wall of the rod 212, and include a spiral groove arranged on the inner wall of the lifting shaft 108. And in other embodiments, the spiral transmission mechanism can also be set to other matching structures, such as mutually matching spiral groove structures, etc., as long as the lifting shaft 108 and the rod 212 can perform relative spiral motion.

[0056] The door lock 100 also includes a trajectory control mechanism to limit the movement of the lifting shaft 108 along a predetermined motion trajectory when the lifting shaft 108 moves relative to the housing 101. The trajectory control mechanism includes a trajectory sleeve 230, which is also sleeved on the outside of the lifting shaft 108, and the trajectory sleeve 230 is supported on the disk portion 211 of the driving member 218. In this embodiment, the trajectory control mechanism also includes at least one trajectory control groove 231 arranged on the trajectory sleeve 230 and penetrating the cylinder wall of the trajectory sleeve 230, and includes at least one stop pin 241 arranged on the outer wall of the lifting shaft 108, and the stop pin 241 cooperates with the trajectory control groove 231 to control the motion trajectory of the lifting shaft 108. As a specific example, the trajectory control groove 231 includes a first section groove and a second section groove that are connected, and when the stop pin 241 cooperates and slides in the first section groove, the lifting shaft 108 moves approximately along the circumferential direction of the rod portion 212. When the stop pin 241 slides in the second slot, the lifting shaft 108 moves approximately along the axial direction of the rod 212. In this embodiment, the first slot includes a transverse slot 236 extending circumferentially around the lifting shaft 108, and the second slot includes a longitudinal slot 237 extending axially along the lifting shaft 108. When the stop pin 241 slides in the transverse slot 236, the rod 212 drives the lifting shaft 108 and the rod 212 to rotate together, so that the lifting shaft 108 rotates approximately along the circumferential direction of the rod 212. When the stop pin 241 slides in the longitudinal slot 237, the lifting shaft 108 cannot rotate, and the rod 212 drives the lifting shaft 108 and the rod 212 to rotate relative to each other, so that the lifting shaft 108 moves up or down in a straight line. It can be understood by those skilled in the art that the transverse slot 236 in the present application may not extend completely in the horizontal direction, but may extend within an angle range of ±10° with the horizontal direction. And the longitudinal groove 237 may not extend completely in the vertical direction, but may extend within an angle range of ±10° with the vertical direction. In some embodiments, the transverse groove extends within an angle range of ±5° with the horizontal direction, and the longitudinal groove extends within an angle range of ±5° with the vertical direction.

[0057] The cylinder 104 is configured to have a shape that matches the motor 221 to limit the position of the motor 221. The cover 103 includes a stopper 229 that extends upward from the upper surface of the cover 103 to abut against the motor 221. The stopper 229 is configured to match the shape of the output gear 222 to limit the axial movement of the output gear 222. Thus, the output gear 222 can be kept in a position that is meshed with the drive member 218 by providing the cylinder 104 and the stopper 229. In this embodiment, the stopper 229 is in a semicircular shape with an opening on the left side to allow a meshing space for the output gear 222 and the drive member 218.

[0058] The cylinder 106 is configured to have a shape matching the driving member 218 and the track sleeve 230 to restrict the driving member 218 and the track sleeve 230 from axial and radial movement. The cover 103 also includes a stopper 219, which is a cylindrical shape extending upward from the upper surface of the cover 103. The lower surface of the disk 211 of the driving member 218 is provided with a groove matching the stopper 219. The stopper 219 can be inserted into the bottom of the disk 211, so that the disk 211 rotates around the stopper 219, thereby further limiting the position of the disk 211. The outer wall of the track sleeve 230 is also provided with a rib 233, and the cylinder 106 is also configured to match the shape of the rib 233 to restrict the track sleeve 230 from rotating. In other words, the driving member 218 can only rotate relative to the housing 101, while the track sleeve 230 is fixed relative to the housing 101.

[0059] Thus, when the output gear 222 moves in the first direction (ie Figure 2A and Figure 2B When the driving member 218 rotates in the second direction (ie, counterclockwise), the driving member 218 is driven as a whole to rotate in the second direction (ie, Figure 2A and Figure 2B The lifting shaft 108 is driven to perform a relative spiral motion through the rod 212. Under the restriction of the track sleeve 230, the lifting shaft 108 moves from the closed position to the open position by ascending and then rotating. When the lifting shaft 108 is pushed by an external force in the open position, the lifting shaft 108 first rotates. Similarly, under the restriction of the track sleeve 230, the rotation of the lifting shaft 108 drives the driving member 218 to rotate together, thereby driving the output gear 222 to rotate in the second direction (i.e., Figure 2A and Figure 2B After the output gear 222 rotates in the second direction, the motor 221 receives the excitation signal and can continue to drive the output gear 222 to rotate in the second direction, thereby driving the driving member 218 to rotate, and under the restriction of the track sleeve 230, the driving lifting shaft 108 moves to the closed position.

[0060] Those skilled in the art may understand that, in other embodiments, the lifting shaft may not be sleeved on the outside of the driving rod, but the driving rod may be sleeved on the outside of the lifting shaft, and correspondingly the track sleeve and the driving rod may be sleeved together in parallel on the outside of the lifting shaft.

[0061] Furthermore, although in this embodiment, the gear transmission mechanism includes mutually meshing teeth 313 and output gear 222, in other embodiments, the gear transmission mechanism may also include other gear transmission mechanisms such as bevel gears, staggered helical gears, worm gears, etc. Furthermore, although in this embodiment, the trajectory control mechanism includes a trajectory sleeve 230, in other embodiments, the trajectory sleeve may not be included, but the trajectory control groove 231 or the limit pin 241 may be directly set on the inner wall of the housing 101, and the limit pin 241 or the trajectory control groove 231 may be correspondingly set on the outer wall of the lifting shaft 108.

[0062] Figure 3A and Figure 3B The specific structure of the driving member 218 is shown. Figure 3A is a three-dimensional structural diagram of the driving member 218 viewed from top to bottom, Figure 3B FIG. 2 is an axial cross-sectional view of the driving member 218. Figure 3A and Figure 3B As shown, the driving member 218 includes a disk portion 211 in the shape of a disk and a rod portion 212 in the shape of a round rod. The diameter of the disk portion 211 is greater than the diameter of the rod portion 212. And the rod portion 212 is formed by extending upward from the upper surface of the disk portion 211. In this embodiment, the disk portion 211 and the rod portion 212 are formed as one body so that they can rotate around their axis x as a whole. In other embodiments, they can also be made separately and then connected together by a connecting structure.

[0063] Specifically, the disk portion 211 is in the shape of a disk, and the tooth portion 313 is arranged on the edge of the circumferential side wall of the disk portion 211 around the axis x. The tooth portion 313 can mesh with the output gear 222, so that the output gear 222 drives the disk portion 211 to rotate. The bottom of the disk portion 211 has a groove 314, and the groove 314 is used to match the limiter 219 on the cover 103. The limiter 219 can be inserted into the groove 314, so that the disk portion 211 can only perform rotational movement, but cannot be displaced laterally.

[0064] The rod connection structure of the rod 212 includes at least one spiral groove 315. Each spiral groove 315 extends from the bottom of the rod 212 to the right and upward to the top in a spiral shape. In other words, each spiral groove 315 spirally rises in the counterclockwise direction and spirally descends in the clockwise direction. In this embodiment, the at least one spiral groove 315 includes a pair of spiral grooves 315, and the pair of spiral grooves 315 are both arranged on the outer wall of the rod 212 and are arranged on opposite sides of the rod 212 in the axial direction. In other embodiments, other numbers of spiral grooves can also be provided, as long as the shaft connection structure on the lifting shaft 108 is provided accordingly.

[0065] Figure 4A and Figure 4B The specific structure of the lifting shaft 108 is shown. Figure 4A The three-dimensional structure diagram of the lifting shaft 108 is shown from the perspective of looking up from the bottom. Figure 4B FIG. 1 shows an axial cross-sectional view of the lifting shaft 108. Figure 4A and Figure 4B As shown, the lifting shaft 108 includes a head 105 and a barrel 443 located below the head 105. The barrel 443 is hollow and has a passage 448 therethrough. The passage 448 is used to accommodate the rod 212 to be inserted therein.

[0066] At least one driving pin 242 is disposed at the bottom of the inner wall of the barrel portion 443 defining the passage 448 of the lifting shaft 108, and is formed by the inner wall protruding inward. The at least one driving pin 242 includes a pair of driving pins 242 configured to match the spiral groove 315. The pair of driving pins 242 are axially arranged opposite to each other to be respectively inserted into the pair of spiral grooves 315 of the rod portion 212. Thus, when the lifting shaft 108 can rotate, the rod portion 212 can drive the lifting shaft 108 to rotate together. When the lifting shaft 108 cannot rotate, the rod portion 212 can drive the lifting shaft 108 to perform relative spiral motion.

[0067] At least one stop pin 241 is disposed on the outer wall of the lifting shaft 108. In the present embodiment, the at least one stop pin 241 includes a pair of stop pins 241 disposed at the bottom of the outer wall of the barrel 443 of the lifting shaft 108. The pair of stop pins 241 are also disposed opposite to each other in the axial direction so as to be respectively inserted into a pair of trajectory control grooves 231 of the trajectory sleeve 230. That is, in the present embodiment, the stop pin 241 and the drive pin 242 are respectively disposed at corresponding positions on the inner and outer sides of the barrel 443. Such an arrangement can reduce the axial dimension of the lifting shaft 108. In other embodiments, the stop pin 241 and the drive pin 242 may also be disposed at other positions of the lifting shaft 108 according to the positions of the trajectory control groove 231 and the spiral groove 315.

[0068] The head of the lifting shaft 108 includes a connecting portion 445 and a mounting portion 446. The connecting portion 445 is roughly in the shape of a round rod, which is used to connect with the barrel 443, for example, by welding or gluing. The mounting portion 446 is set according to the shape and structure of the refueling or charging port cover (not shown in the figure) to be used to install the refueling or charging port cover. As a result, the head 105 and the barrel 443 of the lifting shaft 108 can move together and drive the refueling or charging port cover (not shown in the figure) to move.

[0069] In this embodiment, in order to facilitate processing and assembly of the door lock 100, the barrel 443 and the head 105 are manufactured separately and then connected together to form the lifting shaft 108. During the assembly process, the operator can first assemble the track sleeve 230 from the top of the barrel 443 to the outside of the barrel 443, and then connect the head 105 to the top of the barrel 443. In other embodiments, the barrel 443 and the head 105 can also be manufactured in one piece.

[0070] Figure 5A and Figure 5B The specific structure of the track sleeve 230 is shown. Figure 5A The three-dimensional structure diagram of the track sleeve 230 is shown from the bottom up. Figure 5B Show Figure 5A A front view of the track sleeve 230 is shown. Figure 5A and Figure 5B As shown, the track sleeve 230 is in the shape of a hollow circular sleeve, which is used to be sleeved on the outer side of the barrel 443 of the lifting shaft 108. A pair of convex ribs 233 are provided on opposite sides of the track sleeve 230 in the axial direction. The convex ribs 233 protrude outward from the outer wall of the track sleeve 230 and extend in the axial direction. By providing a corresponding accommodation portion 609 (see Fig. 6A As shown in FIG. 1 , the track sleeve 230 can be prevented from rotating in the housing 101. And by setting the shape of the housing 101, the track sleeve 230 can be restricted to be fixed in the housing 101.

[0071] The track control groove 231 of the track sleeve 230 is formed by penetrating the barrel wall of the track sleeve 230. In the present embodiment, the transverse groove 236 is connected to the top of the longitudinal groove 237, and one end of the transverse groove 236 is connected to the top of the longitudinal groove 237. In the present embodiment, the track control groove 231 also includes a connecting groove 538, and the connecting groove 538 is in a smooth arc shape. The right end of the transverse groove 236 and the top of the longitudinal groove 237 are connected through the connecting groove 538, so that the movement of the lifting shaft 108 is smoother and smoother. In some other embodiments, the right end of the transverse groove 236 and the top of the longitudinal groove 237 can also be directly connected. In the present embodiment, the other end of the transverse groove 236 is a blind end to limit an extreme position of the limit pin 241, which corresponds to the open position of the lifting shaft 108. In this embodiment, the other end of the longitudinal groove 237 extends to the bottom end of the track sleeve 230, so as to facilitate the assembly of the track sleeve 230 and the lifting shaft 108, and define another limit position of the limit pin 241, which corresponds to the closed position of the lifting shaft 108. In this embodiment, the track sleeve 230 is supported on the disk 211, so when the limit pin 241 is located at the other end of the longitudinal groove 237, the limit pin 241 is blocked by the disk 211 and cannot continue to move downward, thereby defining another limit position of the limit pin 241, that is, the closed position of the lifting shaft 108.

[0072] Thus, the stop pin 241 can continuously slide in the transverse groove 236 and the longitudinal groove 237 of the trajectory control groove 231. When the stop pin 241 slides in the transverse groove 236, the lifting shaft 108 can rotate, but will not move up or down. When the stop pin 241 slides in the longitudinal groove 237, the lifting shaft 108 cannot rotate and can only move up or down.

[0073] Those skilled in the art will appreciate that, in some embodiments, the longitudinal groove may also be disposed above the transverse groove, that is, the bottom end of the longitudinal groove is connected to one end of the transverse groove, so as to be suitable for an inward-retracted refueling or charging port cover. At this time, when the lifting shaft is in the closed position, the stop pin first slides downward in the longitudinal groove, and then slides in the transverse groove, so that the lifting shaft first performs a downward movement and then a rotational movement to the open position. When the lifting shaft is in the open position, the stop pin first slides in the transverse groove, and then slides upward in the longitudinal groove, so that the lifting shaft first performs a rotational movement and then an upward movement to the closed position.

[0074] Fig. 6A and Figure 6B The specific structure of the seat body 102 is shown. Fig. 6A The three-dimensional structure diagram of the seat body 102 from the perspective of looking down from above is shown. Figure 6B FIG. 1 shows a three-dimensional structural diagram of the seat body 102 from a bottom-up perspective. Fig. 6A and Figure 6B As shown, the seat 102 includes a cylinder 104 and a cylinder 106 arranged side by side. The cylinder 104 defines a cavity 654, which is configured to match the motor 221 and the output gear 222 to accommodate the motor 221 and the output gear 222. The cylinder 106 defines a cavity 656, which is configured to match the driving member 218, the lifting shaft 108 and the track sleeve 230 to accommodate the driving member 218, the lifting shaft 108 and the track sleeve 230. The cavity 654 and the cavity 656 are connected to form a cavity 207. The bottom ends of the cylinder 104 and the cylinder 106 are open, so that the cover 103 can close the bottom ends of the cylinder 104 and the cylinder 106 from below.

[0075] Specifically, combined Figure 2C As shown, the top of the cylinder 104 is closed, and the right side wall is set to a plane shape matching the motor 221. And at least one limiting rib 651 is provided on the inner wall of the cylinder 104, each limiting rib 651 extends in the axial direction and is arranged in parallel in the circumferential direction. The arrangement position of at least one limiting rib 651 in the circumferential direction matches the shape of the motor 221, and the axial height of the limiting rib 651 is approximately equal to the height of the motor 221, so that the motor 221 can be restricted in the cavity 654 through the limiting rib 651. The height of the cylinder 104 is approximately equal to the total height of the motor 221 and the output gear 222, so that the motor 221 and the output gear 222 cannot move axially in the cavity 654.

[0076] The cylinder 106 includes a top 657, a main body 659 and a bottom 658. In the axial direction, the top 657 is connected to the top of the main body 659, and the bottom 658 is connected to the bottom of the main body 659. And the radial dimension of the top 657 is smaller than the radial dimension of the main body 659, and the outer diameter of the bottom 658 is larger than the radial dimension of the main body 659. The top 657, the main body 659 and the bottom 658 together define a cavity 656. The top 657 is used to accommodate a part of the lifting shaft 108, and the top end of the top 657 is open to allow the head 105 of the lifting shaft 108 to extend out of the cylinder 106. The main body 659 is roughly cylindrical in shape to accommodate the track sleeve 230. The axial height and radial dimension of the main body 659 are roughly the same as the axial height and radial dimension of the track sleeve 230 to prevent the track sleeve 230 from axially or radially moving in the cavity 656. The side wall of the main body 659 is provided with a pair of receiving portions 609, and the pair of receiving portions 609 form a pair of grooves 653 on the inner wall of the main body 659, and the pair of grooves 653 are used to receive the pair of ribs 233 of the track sleeve 230 to prevent the track sleeve 230 from rotating in the receiving cavity 656. The bottom 658 is set to a radial dimension and an axial height matching the disk portion 212 of the driving member 218, so as to accommodate the disk portion 212 to rotate therein, but cannot move radially and axially.

[0077] In other embodiments, the seat body may also be configured to have other shapes and structures, as long as they match the shapes of the motor, output gear, drive member, lifting shaft, and track sleeve.

[0078] Fig. 7A and Figure 7B FIG. 1 shows the specific structure of the door lock 100 when the door lock 100 is in a closed state. Fig. 7A A front view of the door lock 100 is shown, Figure 7B Show Fig. 7A The left side view of the door lock 100 after omitting the housing 101, the motor 221 and the output gear 222.

[0079] like Fig. 7A and Figure 7B As shown, when the door lock 100 is in the closed state, the lifting shaft 108 is in the closed position, and the lifting shaft 108 is at the lowest end relative to the housing 101, so that the head 105 is at the lowest position of the door lock 100. At this position, the refueling or charging port cover (not shown in the figure) installed on the head 105 is roughly flush with the outer sheet metal of the door to close the refueling or charging port. At this time, the driving pin 242 on the inner wall of the lifting shaft 108 is located at the bottom end of the spiral groove 315 on the outer wall of the rod 212, and abuts the disk 211, so the driving pin 242 can only move upward. And the limit pin 241 is located at the bottom end of the longitudinal groove 237 and also abuts the disk 211, so the limit pin 241 can only move upward.

[0080] When the motor 221 performs an opening operation on the door lock 100, the output gear 222 rotates in a first direction to drive the disk portion 211 of the driving member 218 to rotate in a second direction (i.e. Figure 7B The rod 212 then drives the lifting shaft 108 to move upward along the axial direction. At this time, the limit pin 241 cooperates with the longitudinal groove 237 to limit the rotational movement of the lifting shaft 108, so that the lifting shaft 108 can only move upward in a straight line, but cannot make a rotational movement, until the limit pin 241 reaches the position as shown in the figure. Fig. 8A and Figure 8B When the door lock 100 reaches the top of the longitudinal groove 237 shown in FIG. Fig. 8A and Figure 8B After the state shown, the refueling or charging port cover (not shown in the figure) connected to the head 105 of the lifting shaft 108 extends upward (or outside the vehicle).

[0081] Fig. 8A and Figure 8B FIG. 1 shows the specific structure of the door lock 100 during the opening process of the door lock 100. Fig. 8A A front view of the door lock 100 is shown, Figure 8B Show Fig. 8A The left side view of the door lock 100 after omitting the housing 101, the motor 221 and the output gear 222.

[0082] like Fig. 8A and Figure 8B As shown, during the opening process of the door lock 100, the lifting shaft 108 rises to the topmost position relative to the housing 101, so that the head 105 is at the highest position of the door lock 100. At this position, the refueling or charging port cover (not shown in the figure) installed on the head 105 extends upward or outward from the vehicle to a certain distance from the sheet metal outside the door, but still blocks the refueling or charging port. At this time, the driving pin 242 on the inner wall of the lifting shaft 108 is located in the middle of the spiral groove 315 on the outer wall of the rod 212. And the limit pin 241 is located at the top of the longitudinal groove 237.

[0083] When the control motor 221 continues to open the door lock 100, the output gear 222 continues to rotate in the first direction to continue to drive the disk portion 211 of the driving member 218 to rotate in the second direction (i.e. Figure 8BThe rod 212 then drives the lifting shaft 108 to rotate together with the rod 212. At this time, the limit pin 241 enters the transverse groove 236 from the top of the longitudinal groove 237 and slides along the transverse groove 236. The limit pin 241 cooperates with the transverse groove 236 to limit the axial movement of the lifting shaft 108, so that the lifting shaft 108 only rotates but does not move in the axial direction. Until the limit pin 241 reaches the position as shown in the figure, the lifting shaft 108 rotates in the second direction. Figure 9A-9B When the door lock 100 reaches the leftmost end of the transverse groove 236 shown in FIG. Figure 9A-9B After the state shown, the refueling or charging port cover (not shown in the figure) connected to the head 105 of the lifting shaft 108 is rotated to open to expose the refueling or charging port.

[0084] Fig. 9A and Fig. 9B FIG. 1 shows the specific structure of the door lock 100 when the door lock 100 is in an open state. Fig. 9A A front view of the door lock 100 is shown, Fig. 9B Show Fig. 9A The left side view of the door lock 100 after omitting the housing 101, the motor 221 and the output gear 222.

[0085] like Fig. 9A and Fig. 9B As shown, when the door lock 100 is in the open state, the lifting shaft 108 is in the open position, and the lifting shaft 108 is kept at the top relative to the housing 101, so that the head 105 is in the highest position of the door lock 100. At this position, the refueling or charging port cover (not shown in the figure) installed on the head 105 extends upward or outward from the vehicle to a certain distance between the sheet metal outside the door, and rotates open to expose the refueling or charging port. At this time, the driving pin 242 on the inner wall of the lifting shaft 108 is kept in the middle of the spiral groove 315 on the outer wall of the rod 212. And the stop pin 241 is located at the left end of the transverse groove 236. Although the driving pin 242 can continue to move relative to the spiral groove 315, the stop pin 241 cannot continue to move to the left in the transverse groove 236, so the lifting shaft 108 cannot continue to rotate to the left, the lifting shaft 108 reaches the open position, and the motor 221 stops the opening operation of the door lock 100.

[0086] When the door lock 100 is closed, the door lock 100 is first opened from the Fig. 9A and Fig. 9B Starting from the open state shown, the motor 221 drives the output gear 222 to rotate in the second direction to drive the driving member 218 counterclockwise (i.e. Fig. 9B The lifting shaft 108 is driven to rotate from the open position to the right. Fig. 8A and Figure 8BThe middle position shown in the figure, and then descend in a straight line until it reaches Fig. 7A and Figure 7B After the door lock 100 is in the closed position, the refueling or charging port is completely closed.

[0087] In some cases, when the door lock 100 is in the open state, the operator can directly push the fuel or charging port cover (not shown in the figure) from the outside of the vehicle to close the door lock 100. Fig. 9A and Fig. 9B In the open state shown, the operator directly pushes the refueling or charging port cover (not shown in the figure) to cause the lifting shaft 108 to rotate. At this time, the limit pin 241 slides from left to right in the transverse groove 236, limiting the lifting shaft 108 to only rotate. The rotation of the lifting shaft 108 drives the rod portion 212 to rotate together through the driving pin 242 and the spiral groove 315, and then drives the output gear 222 to rotate in the second direction through the disk portion 211. The rotation of the output gear 222 causes the motor 221 to receive a mechanical drive signal for rotation, thereby causing the motor 221 to start running, and the motor 221 drives the output gear 222 to continue to rotate in the second direction, so that the lifting shaft 108 continues to move until it reaches the closed position.

[0088] The door lock 100 can be opened or closed by being driven by the motor 221, or can be closed by being manually pushed by an operator in an open state.

[0089] Although the door lock in this embodiment is opened by extending the refueling or charging port cover (not shown in the figure) connected to the head 105 of the lifting shaft 108 outward, the door lock of the present application is also suitable for opening the refueling or charging port cover by retracting inward, and only the shape of the trajectory control groove needs to be changed accordingly.

[0090] In some embodiments, the door lock 100 of the present application may also include a sensor (not shown in the figure), which can be connected to the motor 221 to sense whether the state of the door lock is in a closed or open state, and generate a state signal of the door lock 100. According to an example of the present application, the sensor calculates the state of the door lock by recording the number of rotations of the drive shaft 228 and the output gear 222. The door lock 100 of the present application may also include a connector for electrically connecting the motor 221 to the vehicle central control system, through which the central control system can send an electrical signal to the motor 221 to close or open the door lock 100 or receive a signal transmitted by the motor 221 (such as a state signal of the door lock 100). And in this embodiment, the motor 221 can receive an electrical signal sent by the vehicle central control system, and can also receive a mechanical signal provided by the rotation of the output gear 222. And in some embodiments, a sensor can also be set to sense the action of the operator when pushing the refueling or charging port cover to generate an electrical signal to close the door lock 100 sent to the vehicle central control system or the motor 221.

[0091] Fig.10 A refueling or charging port door lock according to another embodiment of the present application is shown, wherein the housing is not shown in order to more clearly show the specific structure of the door lock 1000. Those skilled in the art can understand that, according to the shapes of the components contained in the door lock 1000, the housing can be set to a corresponding shape to limit the axial movement of the remaining components except the lifting shaft 108.

[0092] like Fig.10 As shown, the structure of the door lock 1000 is substantially the same as that of the door lock 100, except that the output gear 222 is not directly meshed with the disk portion 211, but is connected through the transmission gear device 1080. Specifically, the transmission gear device 1080 includes two transmission gears, namely a first transmission gear 1081 and a second transmission gear 1082, the radial dimension of the first transmission gear 1081 is larger than the radial dimension of the second transmission gear 1082, and the second transmission gear 1082 is connected above the first transmission gear 1081 to rotate together. The first transmission gear 1081 and the second transmission gear 1082 are arranged to be coaxial, and the common axis z is parallel to the axis x of the driving member 218 and the axis y of the output gear 222. The first transmission gear 1081 is used to mesh with the output gear 222, and the second transmission gear 1082 is used to mesh with the disk portion 211. Thus, the transmission gear device 1080 can be transmission-connected between the output gear 222 and the disk portion 211, so that the output gear 222 can be matched and connected with the disk portion 211. When any one of the output gear 222 and the disk portion 211 rotates, the transmission gear device 1080 can be driven to rotate, thereby driving the other one of the output gear 222 and the disk portion 211 to rotate through the transmission gear device 1080 .

[0093] Those skilled in the art will appreciate that, depending on the specific parameters of the motor and the torque or rotation speed required by the refueling or charging port cover, the transmission gear device 1080 may include more or fewer transmission gears, and the diameter of each transmission gear may be set according to specific needs.

[0094] Fig.11A and Fig. 11B as well as Fig. 12A and Fig. 12B The structure of a refueling or charging port door lock according to another embodiment of the present application is shown. Fig.11A and Fig. 11B The partial structure of the refueling or charging port door lock when it is closed is shown. Fig. 12A and Fig. 12B The figure shows the partial structure of the refueling or charging port door lock when it is in the open state. The refueling or charging port door lock of this embodiment is a door lock that opens outward. In this embodiment, the main difference between the refueling or charging port door lock and the refueling or charging port door lock in the previous embodiment is that the shape of the trajectory control groove 1131 is different from the shape of the trajectory control groove 231, and other structures can be set accordingly. The trajectory control groove 1131 is configured so that when the lifting shaft 1108 is in its open position or closed position, the trajectory control groove 1131 also has space for the limit pin 1141 of the lifting shaft 1108 to move downward, so that the operator can drive the motor (not shown in the figure) by pressing the lifting shaft 1108, and then drive the lifting shaft 1108 to move to the corresponding position through the motor.

[0095] Specifically, in this embodiment, the second section of the track control groove 1131 includes a second extension groove 1177 in addition to the longitudinal groove 1137. The second extension groove 1177 is connected to the end of the longitudinal groove 1137 and extends in the axial direction of the lifting shaft 1108 in the opposite direction to the transverse groove 1136. In this embodiment, the second extension groove 1177 extends vertically downward from the bottom end of the longitudinal groove 1137. As an example, the second extension groove 1177 extends continuously from the bottom end of the longitudinal groove 1137.

[0096] The first section of the track control groove 1131 includes a first extension groove 1276 in addition to the transverse groove 1136. The first extension groove 1276 is connected to the end of the transverse groove 1136 and extends in the axial direction of the lifting shaft 1108 in the opposite direction to the longitudinal groove 1137. In this embodiment, the first extension groove 1276 extends vertically upward from the right end of the transverse groove 1136. As an example, the first extension groove 1276 is smoothly connected to the right end of the transverse groove 1136, for example, by an arc groove. In this embodiment, the bottom end of the second extension groove 1177 extends to the bottom end of the track sleeve 1130, and a limit position of the stop pin 1141 is defined at the bottom end of the longitudinal groove 1137, which corresponds to the closed position of the lifting shaft 1108. That is, when the lifting shaft 1108 is in its closed position, the stop pin 1141 is located at the bottom end of the longitudinal groove 1137, but is separated from the bottom end of the second section of the groove by the second extension groove 1177.

[0097] The top end of the first extension slot 1276 is a blind end to define another limit position of the stop pin 1141, which corresponds to the open position of the lifting shaft 1108. That is, when the lifting shaft 1108 is in its open position, the stop pin 1141 is located at the top end of the first extension slot 1276, and the first extension slot 1276 is spaced between the stop pin 1141 and the transverse slot 1136.

[0098] Thus, when the lifting shaft 1108 is in its closed position, the operator can move the lifting shaft 1108 downward by pressing the refueling or charging port cover (not shown in the figure) connected to the head 1105 of the lifting shaft 1108. At this time, the limit pin 1141 slides downward in the second extension groove 1177 and limits the lifting shaft 1108 to only axial movement. The axial movement of the lifting shaft 1108 rotates the driving member 1118 through the spiral transmission mechanism (not shown in the figure), and then the motor (not shown in the figure) receives a mechanical drive signal, and then the motor starts to drive the lifting shaft 1108 to continue to move to its open position.

[0099] When the lifting shaft 1108 is in its open position, the operator can also move the lifting shaft 1108 downward by pressing the refueling or charging port cover (not shown in the figure) connected to the head 1105 of the lifting shaft 1108. At this time, the limit pin 1141 slides downward in the first extension groove 1276 and limits the lifting shaft 1108 to only axial movement. The axial movement of the lifting shaft 1108 rotates the driving member 1118 through the spiral transmission mechanism (not shown in the figure), and then the motor (not shown in the figure) receives a mechanical drive signal, and then the motor starts to drive the lifting shaft 1108 to continue to move to its closed position.

[0100] In the refueling or charging port door lock of the present embodiment, the operator can either manually press the refueling or charging port cover to open the door lock or manually press the refueling or charging port cover to close the door lock, thereby making the door lock easy to operate and eliminating additional switch components and pressing components for starting the refueling or charging port door lock, thereby simplifying the structure and saving costs.

[0101] In some existing refueling or charging port door locks, a double helical transmission mechanism including a worm gear mechanism and a track control groove drives the lifting shaft to perform a spiral motion, thereby opening or closing the refueling or charging port. This double helical transmission mechanism may cause the door lock to be self-locking, so that the refueling or charging port door lock can only be opened or closed by motor control.

[0102] The refueling or charging port door lock of the present application drives the lifting shaft to move through a single screw transmission mechanism, thereby opening or closing the refueling or charging port, so that the lifting shaft no longer performs a spiral motion relative to the housing, and the door lock does not have a self-locking property. Therefore, when the refueling or charging port door lock is opened, the operator can directly close the refueling or charging port door lock by pushing the refueling or charging port cover when refueling or charging outside the vehicle, which is convenient and reasonable to operate.

[0103] The refueling or charging port door lock of the present application sets the shape of the trajectory control groove to be a connected transverse groove and a longitudinal groove, so that the lifting shaft can only perform axial movement and rotational movement, but cannot perform axial and rotational spiral movement at the same time. This can save the space occupied by the refueling or charging port cover during the opening process. Compared with the door lock that performs spiral movement to open, the door lock of the present application can save the space occupied by the refueling or charging port cover during the axial movement and rotational movement.

[0104] Furthermore, since the driving member of the present application can perform relative spiral motion with the lifting shaft, setting the trajectory control groove as a connected transverse groove and a longitudinal groove rather than a spiral groove can reduce the processing difficulty and avoid the mismatch in size or angle between the spiral groove on the outer wall of the driving member and the spiral trajectory control groove, which may cause the door lock to fail.

[0105] In addition, when the refueling or charging port door lock of the present application is closed, the drive pin and the limit pin are both at the lowest position, so the door lock will not be opened due to the operator's misoperation due to pressing, thereby enhancing the reliability of the refueling or charging port door lock. The refueling or charging port door lock of the present application has a compact structure, small size, low cost, and is highly practical.

[0106] Although the present disclosure has been described in conjunction with the examples of the embodiments summarized above, it is obvious to those of ordinary skill in the art that various alternatives, modifications, variations, improvements and / or substantially equivalent solutions, whether known or currently or foreseeable in the near future, may be apparent. In addition, the technical effects and / or technical problems described in this specification are exemplary rather than restrictive. So the disclosure in this specification may be used to solve other technical problems and have other technical effects. Therefore, the examples of the embodiments of the present disclosure as stated above are intended to be illustrative rather than restrictive. Various changes may be made without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is intended to include all known or earlier developed alternatives, modifications, variations, improvements and / or substantially equivalent solutions.

Claims

1. A refueling or charging port door lock, characterized in that include: Housing (101); A lifting shaft (108), wherein the lifting shaft (108) moves relative to the housing (101); a driving member (218), wherein the driving member (218) is disposed in the housing (101), and the driving member (218) can be driven to rotate; a screw transmission mechanism (315, 242), the screw transmission mechanism (315, 242) being connected between the lifting shaft (108) and the driving member (218), so that the driving member (218) can rotate to drive the lifting shaft (108) to move relative to the housing (101); and A trajectory control mechanism (230, 231, 241), wherein the trajectory control mechanism (230, 231, 241) is connected between the lifting shaft (108) and the shell (101), and the trajectory control mechanism (230, 231, 241) is configured to restrict the lifting shaft (108) from moving along a predetermined motion trajectory when the lifting shaft (108) moves relative to the shell (101).

2. The refueling or charging port door lock according to claim 1, characterized in that: The trajectory control mechanism (230, 231, 241) is configured to prevent the lifting shaft (108) from performing spiral motion.

3. The refueling or charging port door lock according to claim 2, characterized in that: The lifting shaft (108) has an open position and a closed position; The driving member (218) comprises a disk portion (211) and a rod portion (212), wherein the disk portion (211) and the rod portion (212) are connected to rotate together, wherein the disk portion (211) is used to cooperate with a motor (221) so that the motor (221) can drive the disk portion (211) to rotate, and the screw transmission mechanism (315, 242) is connected between the lifting shaft (108) and the rod portion (212) of the driving member (218); The lifting shaft (108), the driving member (218) and the motor (221) are configured as follows: The motor (221) can rotate in the forward direction to drive the lifting shaft (108) to move from the closed position to the open position through the driving member (218), and during the process of the lifting shaft (108) moving from the open position to the closed position, the lifting shaft (108) can drive the driving member (218) to rotate to drive the motor (221) to rotate in the reverse direction.

4. The refueling or charging port door lock according to claim 3, characterized in that Also includes: A gear transmission mechanism (313, 222), wherein the disk portion (211) of the driving member (218) cooperates with the motor (221) through the gear transmission mechanism (313, 222), so that the motor (221) and the disk portion (211) can drive each other to rotate.

5. The refueling or charging port door lock according to claim 4, characterized in that: The gear transmission mechanism (313, 222) comprises: a tooth portion (313), the tooth portion (313) being disposed on a circumferential edge of the disk portion (211); and An output gear (222), the output gear (222) being connected to the motor (221); The tooth portion (313) cooperates with the output gear (222) so that the motor (221) can drive the disk portion (211) to rotate.

6. The refueling or charging port door lock according to claim 5, characterized in that: The gear transmission mechanism (313, 222) further comprises a transmission gear device (1080), wherein the transmission gear device (1080) is transmission-connected between the output gear (222) and the disk portion (211), so that the rotation of any one of the output gear (222) and the disk portion (211) can drive the transmission gear device (1080) to rotate, thereby causing the transmission gear device (1080) to drive the other of the output gear (222) and the disk portion (211) to rotate.

7. The refueling or charging port door lock according to claim 6, characterized in that: The transmission gear device (1080) includes one or more transmission gears (1081, 1082).

8. The refueling or charging port door lock according to claim 3, characterized in that: The spiral transmission mechanism (315, 242) comprises: at least one spiral groove (315), the spiral groove (315) extending in a spiral shape; and At least one drive pin (242) that slides in a corresponding helical groove (315).

9. The refueling or charging port door lock according to claim 8, characterized in that: The lifting shaft (108) has a channel (448) inside, and the lifting shaft (108) is sleeved on the outside of the rod (212) so that the rod (212) is inserted into the channel (448); The at least one spiral groove (315) is arranged on the outer wall of the rod portion (212), and the at least one driving pin (242) is formed by protruding inward from the inner wall of the lifting shaft (108) that defines the channel (448).

10. The refueling or charging port door lock according to claim 3, characterized in that: The trajectory control mechanism (230, 231, 241) comprises: A trajectory control groove (231), the trajectory control groove (231) corresponds to the predetermined motion trajectory, and the trajectory control groove (231) comprises a first groove section and a second groove section that are connected; and a limit pin (241), wherein the limit pin (241) slides in the trajectory control groove (231) to control the predetermined motion trajectory of the lifting shaft (108) relative to the housing (101) when the rod portion (212) rotates; Wherein, the trajectory control mechanism (230, 231, 241) is configured as follows: When the limiting pin (241) slides in the first groove, the lifting shaft (108) moves approximately along the circumferential direction of the rod portion (212); and When the limiting pin (241) slides in the second groove, the lifting shaft (108) moves approximately along the axial direction of the rod portion (212).

11. The refueling or charging port door lock according to claim 10, characterized in that: The first section groove (236) includes a transverse groove (236) extending along the circumference of the lifting shaft (108), and the second section groove (237) includes a longitudinal groove (237) extending along the axial direction of the lifting shaft (108); The trajectory control groove (231) further comprises a connecting groove (538), wherein the connecting groove (538) connects the top end or the bottom end of the longitudinal groove (237) with one end of the transverse groove (236).

12. The refueling or charging port door lock according to claim 11, characterized in that: The connecting groove (538) is in an arc shape.

13. The refueling or charging port door lock according to claim 11, characterized in that: The first section groove further includes a first extension groove (1276), the first extension groove (1276) is connected to the end of the transverse groove, and extends along the axial direction of the lifting shaft in a direction opposite to the longitudinal groove; And the second section groove includes a second extension groove (1177), which is connected to the end of the longitudinal groove and extends along the axial direction of the lifting shaft in the opposite direction to the transverse groove.

14. The refueling or charging port door lock according to claim 10, characterized in that Also includes: A track sleeve (230), wherein the track sleeve (230) is sleeved on the outside of the lifting shaft (108) and connected to the housing (101), and the track sleeve (230) is fixed relative to the housing (101); The trajectory control groove (231) is arranged on the trajectory sleeve (230), and the limit pin (241) is arranged on the outer wall of the lifting shaft (108).

15. The refueling or charging port door lock according to claim 3, characterized in that Also includes: A motor (221), wherein the motor (221) is configured to drive the driving member (218) to rotate, wherein the motor (221) can be driven by an electrical signal or a mechanical signal to rotate forward or reverse.

16. The refueling or charging port door lock according to claim 3, characterized in that: The lifting shaft (108) has a head (105), and the head (105) is used to assemble a refueling and charging port door cover; The lifting shaft (108) is configured as follows: When the lifting shaft (108) is in the open position, the refueling or charging port door cover exposes the refueling or charging port for supplying fuel or electricity; and when the lifting shaft (108) is in the closed position, the refueling or charging port door cover closes the refueling or charging port.

17. The refueling or charging port door lock according to claim 16, characterized in that: The housing (101) has a cavity (207), a portion of the lifting shaft (108) is accommodated in the cavity (207), a head (105) of the lifting shaft (108) extends out of the cavity (207), and the driving member (218) and the motor (221) are accommodated in the cavity (207); The shell (101) is fixed so that when the lifting shaft (108) moves, the lifting shaft (108) moves relative to the shell (101).

18. The refueling or charging port door lock according to claim 17, characterized in that: The housing cavity (207) of the housing (101) is configured to accommodate the driving member (218) and the motor (221), and to limit the axial movement of the driving member (218) and the motor (221).

Images