Door cover assembly, door cover opening and closing control method and door lock

Abstract

The present invention discloses a door cover assembly, a door cover opening and closing control method and a door lock, which include a housing, a lifting assembly and a driving rotation assembly. The lifting assembly includes a lifting member and a driving shaft, the lifting member is arranged in the housing and has a lifting seat that can be lifted and lowered, the bottom end of the driving shaft is rotatably arranged on the lifting seat, and the top end passes through the housing and is used to connect the door cover. The driving rotation assembly includes a driving rack, a driving rotation gear set and an elastic reset member, the driving rack can be lifted and lowered in the housing, the driving rack is located above the lifting seat, and is spaced a predetermined distance from the lifting seat. The driving rotation gear set is arranged in the housing, the driving rotation gear set is meshed with the driving rack, and can drive the driving shaft to be rotatably sleeved on the outside of the driving shaft. The two ends of the elastic reset member contact the housing and the driving rack, respectively. The door cover assembly, the door cover opening and closing control method and the door lock of the present invention can control the opening and closing of the door cover, and have high working reliability and long service life.

Description

Technical Field

[0001] The invention relates to the field of door locks, and in particular to a door cover assembly for a vehicle, an opening and closing control method of the door cover, and a door lock. Background Art

[0002] At present, the energy supply port of a car, such as a refueling port for supplying fuel or oil and / or a charging port for supplying electricity, is usually covered by a door cover, and the opening and closing of the door cover is controlled by a door lock. For example, when refueling or charging is needed, the door lock is driven to open the door cover so that the door cover is away from the refueling port or the charging port, exposing the refueling port or the charging port, and then refueling the car with fuel or electricity. After the refueling is completed, the door lock is driven to close the door cover so that the door cover covers the refueling port or the charging port again.

[0003] However, in the above process, the door lock is often operated manually to open or close the door cover, so the operation is inconvenient. In the automatic control method, for example, patent CN201710687660.5 discloses a refueling or charging port door lock and its refueling or charging port cover assembly, which drives the movement of its lifting shaft and then drives the movement of its door cover to achieve the opening and closing of the door cover, but the movement of its lifting shaft is mainly completed by the sliding cooperation of the positioning pin and the slide slot. The positioning pin is easy to disengage from the slide slot, which makes the movement of the lifting shaft uncontrollable, and the door cover can no longer be controlled to open or close. Therefore, the working reliability is poor and the service life is short.

[0004] In addition, the axial movement distance of the lifting shaft when it only performs ascending and descending movements is determined by the height of the straight groove portion in the slide groove. However, due to the variety of car types, for example, for some types of cars, the door cover needs to be raised to a higher height relative to the refueling port or charging port so that its subsequent rotational movement will not be blocked. For other types of cars, the door cover only needs to be raised to a smaller height relative to the refueling port or charging port so that its subsequent rotational movement will not be blocked. If it is to adapt to different types of cars, it is necessary to reprocess and manufacture track worm gears with different straight groove heights, and replace the corresponding track worm gears accordingly, which is more troublesome. Summary of the invention

[0005] An advantage of the present invention is that it provides a door cover assembly, a door cover opening and closing control method and a door lock, which can control the opening and closing of the door cover and have high working reliability and long service life.

[0006] One advantage of the present invention is that it provides a door cover assembly, a door cover opening and closing control method and a door lock, wherein the driving rotating gear set drives the driving shaft to rotate, and the operation is reliable.

[0007] One advantage of the present invention is that it provides a door cover assembly, a door cover opening and closing control method and a door lock, and the moving distance of the drive shaft when only moving axially is convenient to adjust, so that the door cover can be suitable for different types of cars.

[0008] To achieve at least one of the above advantages of the present invention, the present invention provides a door lock, the door lock comprises a shell; a lifting assembly, the lifting assembly comprises a lifting member and a driving shaft, the lifting member is arranged in the shell and has a lifting seat that can be lifted and lowered, the bottom end of the driving shaft is rotatably arranged on the lifting seat, and the top end passes through the shell to connect the door cover; and a driving rotating assembly, the driving rotating assembly comprises a driving rack, a driving rotating gear set and an elastic reset member, the driving rack can be lifted and lowered in the shell, the driving rack is located above the lifting seat and is spaced a predetermined distance from the lifting seat; the driving rotating gear set is arranged in the shell, the driving rotating gear set is meshed with the driving rack, and can drive the driving shaft to be rotatably sleeved on the outside of the driving shaft; the two ends of the elastic reset member contact the shell and the driving rack respectively;

[0009] The door lock is constructed such that: when the lifting seat rises, the driving shaft rises along the axial direction thereof as the lifting seat rises, and after the lifting seat contacts the driving rack, the driving rotating gear set rotates as the driving rack rises, driving the driving shaft to rotate around its axial direction, so that the driving shaft rotates and rises, so as to drive the door cover to leave the closed position, so as to open the door cover; when the lifting seat descends, the driving shaft descends along the axial direction as the lifting seat descends, the driving rack descends and resets under the elastic force of the elastic reset member, the driving rotating gear set rotates in the opposite direction as the driving rack descends, so as to drive the driving shaft to rotate in the opposite direction as the driving rack descends, so as to drive the driving shaft to rotate in the opposite direction as the driving rack descends, and after the lifting seat is disengaged from the driving rack, the driving shaft continues to descend along the axial direction as the lifting seat descends, so as to return to the closed position, so as to close the door cover.

[0010] According to one embodiment of the present invention, the driving rotating gear set includes a driving rotating gear and a driving rotating bevel gear, the driving rotating gear has a driving rotating gear ring and a driving rotating bevel gear ring coaxially connected, the driving rotating gear ring is meshed with the driving rotating rack, the driving rotating bevel gear is meshed with the driving rotating bevel gear ring and the axes of the two are perpendicular, and the driving rotating bevel gear can drive the driving shaft to rotate and is sleeved on the outside of the driving shaft.

[0011] According to an embodiment of the present invention, a non-circular driving inner hole is formed in the driving bevel gear, and the driving shaft has a non-circular rod portion sleeved in the driving inner hole.

[0012] According to an embodiment of the present invention, the lifting seat forms a circular hole that passes through the lifting seat, the driving shaft has a circular rod portion and an anti-slip portion, the anti-slip portion is formed by extending radially outward from the circular rod portion, the anti-slip portion is placed on the upper surface of the lifting seat, the circular rod portion is rotatably inserted into the circular hole, and the lifting assembly includes an anti-slip sleeve, and the anti-slip sleeve is sleeved on the portion of the circular rod portion that extends out of the lower surface of the lifting seat.

[0013] According to one embodiment of the present invention, a driving assembly is included, which is arranged in the housing and includes a worm, a transmission gear set and a driving gear set. The worm is meshed with the transmission gear set, and the axis of the worm is perpendicular to the axis of the transmission gear set. The transmission gear set is meshed with the driving gear set. The lifting member has a driving lifting rack connected to the lifting seat. The driving gear set is meshed with the driving lifting rack to drive the driving lifting rack to rise and fall when the driving gear set rotates, so as to drive the lifting seat to rise and fall.

[0014] According to one embodiment of the present invention, the transmission gear set includes a large diameter transmission bevel gear (or worm gear) and a small diameter transmission gear coaxially connected thereto, the large diameter transmission bevel gear meshes with the worm, the driving gear set includes a large diameter driving gear and a small diameter driving gear coaxially connected thereto, the large diameter driving gear meshes with the small diameter transmission gear, the small diameter driving gear meshes with the driving lifting rack, and the diameter of the large diameter driving gear is larger than that of the large diameter transmission gear, and the diameter of the small diameter transmission gear is approximately equal to that of the small diameter driving gear.

[0015] According to an embodiment of the present invention, the housing includes a first shell and a second shell, and the housing is formed by detachably splicing the first shell and the second shell.

[0016] According to an embodiment of the present invention, a tray is included. The tray is sleeved on the top end of the driving shaft, and one end of the tray away from the driving shaft is used to connect to and support the door cover.

[0017] In order to achieve at least one of the above advantages of the present invention, the present invention provides a door cover opening and closing control method, the door cover is opened and closed by the door lock as described above, and the opening and closing control method comprises the following steps: driving the lifting seat to rise, so that the drive shaft rises along its axial direction as the lifting seat rises; after the lifting seat rises to a position in contact with the driving rack, the driving rack is driven to rise by the lifting seat, so that the driving rotating gear set is driven to rotate by the rising driving rack, so that the driving shaft is driven to rotate by the rotation of the driving rotating gear set, so that the driving shaft rises along its axial direction and rotate around its axial direction at the same time to drive the door cover to open; drive the lifting seat to descend, and drive the driving rack to descend and reset through the elastic reset member, so as to drive the driving rotating gear set to rotate in the opposite direction to the previous direction through the descending of the driving rotating rack, so as to drive the driving shaft to rotate through the driving rotating gear set to rotate in the opposite direction to the previous direction, so that the driving shaft descends along its axial direction and rotates around the opposite direction to the previous direction; and continue to drive the lifting seat to descend, so that the lifting seat is disengaged from the driving rack, and drives the driving shaft to continue to descend in the axial direction to drive the door cover to close.

[0018] In order to achieve at least one of the above advantages of the present invention, the present invention provides a door cover assembly for installation on a vehicle, the door cover assembly comprising: the door lock as described above; a door cover, the door cover is connected to the top end of the drive shaft to switch between a closed position and an open position under the drive of the drive shaft, when the door cover is in the closed position, the door cover covers the energy supply port of the vehicle, and when the door cover is in the open position, the energy supply port is exposed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a door cover assembly according to an embodiment of the present invention when the door cover is closed is shown.

[0020] Figure 2 A schematic structural diagram of a door cover assembly according to an embodiment of the present invention when the door cover is opened is shown.

[0021] Figure 3 A schematic structural diagram of a door cover assembly in a closed state with the first shell removed is shown.

[0022] Figure 4 The diagram shows a structural diagram of a lifting assembly and a driving rotating assembly connected at an angle according to an embodiment of the present invention.

[0023] Figure 5 An exploded schematic diagram of a lifting assembly according to an embodiment of the present invention is shown.

[0024] Figure 6The schematic diagram of the structure at another angle is shown when the lifting assembly and the driving rotation assembly of the embodiment of the present invention are connected.

[0025] Reference numerals:

[0026] 100, door lock; 200, door cover;

[0027] 10. housing; 11. first housing; 12. second housing;

[0028] 20. lifting assembly; 21. lifting member; 211. lifting seat; 21101. round hole; 212. driving lifting rack; 22. driving shaft; 221. non-round rod portion; 222. round rod portion; 223. anti-dropping portion; 23. anti-dropping sleeve;

[0029] 30. Drive rotating assembly; 31. Drive rotating rack; 32. Drive rotating gear set; 321. Drive rotating gear; 3211. Drive rotating ring gear; 3212. Drive rotating bevel ring gear; 322. Drive rotating bevel gear; 32201. Drive rotating inner hole; 33. Elastic reset member;

[0030] 40. Drive assembly; 41. Worm; 42. Transmission gear set; 421. Large diameter transmission bevel gear; 422. Small diameter transmission gear; 43. Drive gear set; 431. Large diameter drive gear; 432. Small diameter drive gear;

[0031] 50. Pallet. DETAILED DESCRIPTION

[0032] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0033] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0034] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The door cover assembly of the present invention is mainly used to be installed on a vehicle to cover or open the energy supply port of the vehicle. For example, the door cover assembly is installed on a fuel tank or a charging box of a car to cover the fuel inlet of the fuel tank or the charging port of the charging box, or to open the fuel inlet of the fuel tank or the charging port of the charging box to expose the fuel inlet of the fuel tank or the charging port of the charging box.

[0037] Combination Figure 1 and Figure 2 The door lock 100 of the present invention is mainly used to drive the door cover 200 to move so that the door cover 200 is in the closed position (i.e. Figure 1 The door cover 200 is located in the position) and the open position (i.e. Figure 2 The door cover 200 is switched between the positions thereof, thereby achieving the purpose of controlling the door cover 200 to be opened and closed.

[0038] The door lock 100 of the present invention includes a housing 10 , a lifting assembly 20 and a driving rotation assembly 30 .

[0039] Specifically, the housing 10 may include a first housing 11 and a second housing 12, and is formed by detachably splicing the first housing 11 and the second housing 12. Of course, the housing 10 may also be made by other processing methods, such as welding, etc., which will not be described here.

[0040] Figure 3 This is a schematic diagram of the structure of the present invention when the first housing 11 is removed. Figure 3The lifting assembly 20 includes a lifting member 21 and a driving shaft 22. The lifting member 21 is disposed in the housing 10 and has a lifting seat 211 that can be lifted and lowered. The bottom end of the driving shaft 22 is rotatably disposed on the lifting seat 211. The top end of the driving shaft 22 passes through the housing 10 and is used to connect to the door cover 200.

[0041] The driving rotation assembly 30 includes a driving rack 31, a driving rotation gear set 32 ​​and an elastic reset member 33. The driving rack 31 is arranged in the housing 10 so as to be liftable, and the driving rack 31 is located above the lifting seat 211 and is spaced a predetermined distance from the lifting seat 211. The driving rotation gear set 32 ​​is arranged in the housing 10, and the driving rotation gear set 32 ​​is meshed with the driving rack 31, and can drive the driving shaft 22 to rotate and is sleeved on the outside of the driving shaft 22. The two ends of the elastic reset member 33 contact the housing 10 and the driving rack 31 respectively.

[0042] When the lifting seat 211 rises, the driving shaft 22 rises along the axial direction thereof as the lifting seat 211 rises, and after the lifting seat 211 contacts the driving rack 31, the lifting seat 211 rises and drives the driving rack 31 to rise, and the driving rotating gear set 32 ​​rotates as the driving rack 31 rises, and the driving rotating gear set 32 ​​rotates to drive the driving shaft 22 to rotate around its axial direction, so that the driving shaft 22 rises axially and rotates around its axial direction at the same time, so as to drive the door cover 200 to leave the closed position, so that the door cover 200 is opened.

[0043] In other words, before the door cover 200 is opened, the initial position of the door cover 200 is defaulted to be in the closed position. Figure 1 The door cover 200 is located in a position where the door cover 200 can cover the refueling port or charging port of the vehicle.

[0044] At this time, the shell 10 is fixed, driving the lifting seat 211 to rise, and through the lifting seat 211 rising, the driving shaft 22 is driven to rise axially, and then when the lifting seat 211 rises to contact the driving rack 31, the lifting seat 211 continues to rise and drives the driving rack 31 to rise, and the driving rack 31 rises and drives the driving rotating gear set 32 ​​to drive the driving shaft 22 to rotate around its axial direction, for example, driving the driving shaft 22 to rotate counterclockwise around its axial direction. That is to say, in this process, the shell 10 is fixed, and the driving shaft 22 first rises axially and then rotates and rises relative to the shell 10, thereby driving the door cover 200 to first rise axially and then rotate and rise, so that the door cover 200 leaves and deviates from the initial closed position, so that the door cover 200 moves to the position as shown in the figure. Figure 2The open position shown enables the door cover 200 to be opened.

[0045] When the lifting seat 211 descends, the driving shaft 22 descends along its axial direction as the lifting seat 211 descends, and the driving rack 31 is reset under the elastic force of the elastic reset member 33, and the driving rotating gear set 32 ​​rotates in the opposite direction as the driving rack 31 descends, so that the driving shaft 22, under the joint action of the driving rotating gear set 32 ​​and the lifting seat 211, descends along its axial direction and rotates in the opposite direction, and after the lifting seat 211 is separated from the driving rack 31, the driving shaft 22 continues to descend along the axial direction as the lifting seat 211 descends to return to the initial closed position, so that the door cover 200 is closed.

[0046] That is, when the door cover 200 is Figure 2 The open position shown returns to Figure 1 When the lifting seat 211 is in the closed position shown, the lifting seat 211 is driven to descend first, and the lifting seat 211 is driven to descend and drive the driving shaft 22 to descend in the axial direction, and the elastic reset member 33 drives the driving rack 31 to descend and reset, and the driving rack 31 is driven to descend and drive the driving rotating gear set 32 ​​to rotate in the opposite direction to the opening direction, so that the driving shaft 22 rotates in the opposite direction and descends under the joint action of the driving rotating gear set 32 ​​and the lifting seat 211. For example, the driving shaft 22 rotates clockwise around its axis and descends. When the driving rack 31 is no longer driven to descend by the elastic reset member 33, the driving rack 31 is separated from the lifting seat 211, and the lifting seat 211 is continued to be controlled to descend, so that the driving shaft 22 continues to descend in the axial direction, so that the driving shaft 22 first rotates and descends in the opposite direction and then descends in the axial direction, and the door cover 200 is driven to rotate and descend in the opposite direction and then descend in the axial direction, so that the door cover 200 returns to the previous closed position, and the door cover 200 is closed.

[0047] Therefore, the door lock 100 of the present invention can control the opening and closing of the door cover 200, and has high working reliability and long service life.

[0048] In addition, it is worth mentioning that the axial movement distance of the drive shaft 22 of the present invention when only performing ascending movement and descending movement is easy to adjust, that is, by adjusting the initial predetermined distance between the driving rack 31 and the lifting seat 211, the axial movement distance of the drive shaft 22 when only performing axial ascending movement and axial descending movement is adjusted, and then the axial movement distance of the door cover 200 when only performing axial ascending movement and axial descending movement is adjusted, so that the door cover 200 can be suitable for different types of vehicles, thereby improving the application range of the door cover 200.

[0049] For example, when the door cover 200 is raised to a higher height relative to the energy supply port of the vehicle before it can rotate, the driving rack 31 and the lifting seat 211 can be assembled in the housing 10, and the driving rack 31 can be moved upward relative to the lifting seat 211 to increase the initial predetermined distance between the driving rack 31 and the lifting seat 211. In this way, the axial movement distance of the door cover 200 when only performing the upward movement is increased, so that the door cover 200 can rotate only when it is raised to a higher height relative to the energy supply port of the vehicle.

[0050] When the door cover 200 is able to rotate when it rises to a relatively small height relative to the energy supply port of the vehicle, the driving rack 31 and the lifting seat 211 can be assembled in the housing 10, and the driving rack 31 can be moved downward relative to the lifting seat 211 to reduce the initial predetermined distance between the driving rack 31 and the lifting seat 211. In this way, the axial movement distance of the door cover 200 when it only moves upward can be reduced, so that the door cover 200 can rotate when it rises to a relatively small height relative to the energy supply port of the vehicle.

[0051] According to the above analysis, the opening and closing control method of the door cover 200 of the present invention may include the following steps:

[0052] S10: driving the lifting seat 211 to rise, so that the driving shaft 22 rises along the axial direction thereof as the lifting seat 211 rises.

[0053] S20: After the lifting seat 211 rises to the position in contact with the driving rack 31, the lifting seat 211 drives the driving rack 31 to rise, so that the driving rotating gear set 32 ​​is driven to rotate through the rising of the driving rack 31, and the driving shaft 22 is driven to rotate through the rotation of the driving rotating gear set 32, so that the driving shaft 22 rises along its axial direction and rotates around its axial direction at the same time, so as to drive the door cover 200 to open.

[0054] S30: Drive the lifting seat 211 to descend, and drive the driving rack 31 to descend and reset through the elastic reset member 33, so that the driving rack 31 descends and drives the driving rotating gear set 32 ​​to rotate in the opposite direction to the previous direction, so that the driving rotating gear set 32 ​​rotates in the opposite direction to the previous direction to drive the driving shaft 22 to rotate, so that the driving shaft 22 descends along its axial direction and rotates around the opposite direction to the previous direction.

[0055] S40: Continue to drive the lifting seat 211 downward, so that the lifting seat 211 is separated from the driving rack 31, and drive the driving shaft 22 to continue to descend along the axial direction, so as to drive the door cover 200 to close.

[0056] According to an embodiment of the present invention, Figure 4 The driving rotating gear set 32 ​​includes a driving rotating gear 321 and a driving rotating bevel gear 322. The driving rotating gear 321 has a driving rotating gear ring 3211 and a driving rotating bevel gear ring 3212 coaxially connected, and the driving rotating gear ring 3211 is meshed with the driving rotating rack 31. The driving rotating bevel gear 322 is meshed with the driving rotating bevel gear ring 3212, and the axis of the driving rotating bevel gear 322 is perpendicular to the axis of the driving rotating bevel gear ring 3212, and the driving rotating bevel gear 322 can drive the driving shaft 22 to rotate and is sleeved on the outside of the driving shaft 22. Therefore, when the driving rack 31 is raised or lowered, the driving rack 31 drives the driving gear ring 3211 to rotate, and the driving gear ring 3211 rotates to drive the driving bevel gear ring 3212 to rotate synchronously, and the driving bevel gear ring 3212 rotates to drive the driving bevel gear 322 to rotate, and then the driving bevel gear 322 rotates to drive the driving shaft 22 to rotate. Therefore, the present invention achieves the purpose of driving the driving shaft 22 to rotate by rotating the driving rotating gear set 32, and when the driving rack 31 rises and falls, the rotation direction of the driving shaft 22 is opposite.

[0057] Specifically, a non-circular driving inner hole 32201 is formed in the driving bevel gear 322, and the driving shaft 22 has a non-circular rod portion 221, and the non-circular rod portion 221 is sleeved in the non-circular driving inner hole 32201. More specifically, the driving inner hole 32201 can be polygonal or oblong, and the cross section of the non-circular rod portion 221 can be correspondingly polygonal or oblong. Therefore, when the non-circular rod portion 221 is sleeved in the non-circular driving inner hole 32201, the driving bevel gear 322 rotates to drive the driving shaft 22 to rotate.

[0058] According to an embodiment of the present invention, Figure 5The lifting seat 211 forms a circular hole 21101, the driving shaft 22 has a round rod portion 222 and an anti-slip portion 223, the anti-slip portion 223 is formed extending outwardly along the radial direction of the round rod portion 222, and the anti-slip portion 223 is placed on the upper surface of the lifting seat 211, the round rod portion 222 is rotatably inserted into the circular hole 21101, and the lifting assembly 20 includes an anti-slip sleeve 23, the anti-slip sleeve 23 is sleeved on the portion of the round rod portion 222 extending out of the lower surface of the lifting seat 211. Therefore, when the lifting seat 211 rises, the driving shaft 22 can be driven to rise with the lifting seat 211, and when the lifting seat 211 descends, the driving shaft 22 can be driven to descend with the lifting seat 211, so that the driving shaft 22 can rise and fall with the lifting seat 211. The driving shaft 22 can also rotate in the circular hole 21101 , so that the driving shaft 22 can rotate relative to the lifting seat 211 .

[0059] According to an embodiment of the present invention, Figure 3 The elastic reset member 33 is configured as a spring sleeve, the bottom end of which contacts the rotation-driving rack 31, and the top end contacts the top wall of the housing 10. Thus, when the door cover 200 is driven to open, the rotation-driving rack 31 rises, and the elastic reset member 33 is compressed to accumulate elastic potential energy. When the door cover 200 is driven to close, the rotation-driving rack 31 descends and resets under the elastic reset force of the elastic reset member 33, thereby returning to the position before the rise.

[0060] According to an embodiment of the present invention, Figure 6 The lifting member 21 has a driving lifting rack 212, and the driving lifting rack 212 is connected to the lifting seat 211. The door lock 100 includes a driving assembly 40, and the driving assembly 40 includes a worm 41, a transmission gear set 42 and a driving gear set 43. The worm 41 is meshed with the transmission gear set 42, and the axis of the worm 41 is perpendicular to the axis of the transmission gear set 42. The transmission gear set 42 is meshed with the driving gear set 43, and the driving gear set 43 is meshed with the driving lifting rack 212.

[0061] Therefore, when the worm 41 rotates around the axis of the worm 41, under the drive of the worm 41, the transmission gear set 42 rotates around the axis of the transmission gear set 42, and the rotation of the transmission gear set 42 drives the driving gear set 43 to rotate. When the driving gear set 43 rotates, it drives the driving lifting rack 212 to rise and fall, thereby driving the lifting seat 211 to rise and fall.

[0062] Specifically, the transmission gear set 42 includes a large-diameter transmission bevel gear (or worm gear) 421 and a small-diameter transmission gear 422 coaxially connected thereto. The large-diameter transmission bevel gear 421 meshes with the worm 41, so that when the worm 41 rotates, the large-diameter transmission bevel gear 421 rotates around the axis of the transmission gear set 42. When the large-diameter transmission bevel gear 421 rotates, the small-diameter transmission gear 422 rotates synchronously with the large-diameter transmission bevel gear 421. The driving gear set 43 includes a large diameter driving gear 431 and a small diameter driving gear 432 coaxially connected thereto. The large diameter driving gear 431 is meshed with the small diameter transmission gear 422 so that when the small diameter transmission gear 422 rotates, the small diameter driving gear 432 is meshed with the driving lifting rack 212 so that when the large diameter transmission bevel gear 421 rotates, the small diameter driving gear 432 is rotated with the large diameter transmission bevel gear 421, thereby driving the driving lifting rack 212 to rise and fall.

[0063] More specifically, the diameter of the large diameter driving gear 431 is larger than the large diameter transmission bevel gear 421, and the diameter of the small diameter transmission gear 422 is substantially equal to the small diameter driving gear 432. Thus, when the worm 41 of the present invention rotates, it can drive the driving lifting rack 212 to lift safely and reliably.

[0064] According to an embodiment of the present invention, Figure 3 The door lock 100 includes a tray 50, which is sleeved on the top of the drive shaft 22, and the end of the tray 50 away from the drive shaft 22 is used to connect and support the door cover 200. Therefore, the tray 50 supports the door cover 200 and drives the door cover 200 to rise, fall and rotate, so that the above-mentioned movement of the door cover 200 can be more stable and reliable.

[0065] In summary, the present invention also provides a door cover assembly for installation in a vehicle, wherein the door cover assembly includes the door lock 100 and the door cover 200 as described above, wherein the door cover 200 is connected to the top end of the drive shaft 22 to switch between a closed position and an open position under the drive of the drive shaft 22, and when the door cover 200 is in the closed position, the door cover 200 covers the energy supply port of the vehicle, and when the door cover 200 is in the open position, the energy supply port is exposed.

[0066] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. Door lock, characterized in that, include: a housing; a lifting assembly, the lifting assembly comprising a lifting member and a driving shaft, the lifting member being arranged in the housing and having a lifting seat which can be lifted and lowered, the bottom end of the driving shaft being rotatably arranged on the lifting seat, and the top end passing through the housing for connecting to the door cover; and, a driving rotation assembly, the driving rotation assembly comprising a driving rack, a driving rotation gear set and an elastic reset member, the driving rack being escalably arranged in the housing, the driving rack being located above the lifting seat and being spaced a predetermined distance from the lifting seat; the driving rotation gear set being arranged in the housing, the driving rotation gear set being meshed with the driving rack and being able to drive the driving shaft to rotate and being sleeved on the outside of the driving shaft; two ends of the elastic reset member contact the housing and the driving rack respectively; The door lock is constructed such that: when the lifting seat rises, the driving shaft rises along its axial direction as the lifting seat rises, and after the lifting seat contacts the driving rack, the driving rotating gear set rotates as the driving rack rises, driving the driving shaft to rotate around its axial direction, so that the driving shaft rotates and rises, so as to drive the door cover to leave the closed position, so as to open the door cover; when the lifting seat descends, the driving shaft descends along the axial direction as the lifting seat descends, the driving rack descends and resets under the elastic force of the elastic reset member, and the driving rotating gear set rotates in the opposite direction to the previous direction as the driving rack descends. , to drive the driving shaft to rotate in the opposite direction to that before, so that the driving shaft rotates and descends in the opposite direction, and after the lifting seat is disengaged from the driving rack, the driving shaft continues to descend axially along the descending direction of the lifting seat to return to the closed position, so that the door cover is closed; the driving rotating gear set includes a driving gear and a driving bevel gear, the driving gear has a driving gear ring and a driving bevel gear ring coaxially connected, the driving gear ring is meshed with the driving rack, the driving bevel gear is meshed with the driving bevel gear ring and the axes of the two are perpendicular, and the driving bevel gear can drive the driving shaft to rotate and is sleeved on the outside of the driving shaft; The door lock includes a driving assembly, which is arranged in the housing and includes a worm, a transmission gear set and a driving gear set. The worm is meshed with the transmission gear set, and the axis of the worm is perpendicular to the axis of the transmission gear set. The transmission gear set is meshed with the driving gear set. The lifting member has a driving lifting rack connected to the lifting seat. The driving gear set is meshed with the driving lifting rack to drive the driving lifting rack to rise and fall when the driving gear set rotates, so as to drive the lifting seat to rise and fall.

2. The door lock according to claim 1, characterized in that: A non-circular driving inner hole is formed in the driving bevel gear, and the driving shaft has a non-circular rod portion sleeved in the driving inner hole.

3. The door lock according to any one of claims 1 to 2, characterized in that: The lifting seat forms a circular hole that passes through the lifting seat, the driving shaft has a circular rod portion and an anti-slip portion, the anti-slip portion is formed by extending radially outward from the circular rod portion, the anti-slip portion is placed on the upper surface of the lifting seat, the circular rod portion is rotatably inserted into the circular hole, and the lifting assembly includes an anti-slip sleeve, which is sleeved on the portion of the circular rod portion extending out of the lower surface of the lifting seat.

4. The door lock according to claim 1, characterized in that: The transmission gear set includes a large-diameter transmission bevel gear and a small-diameter transmission gear coaxially connected thereto, the large-diameter transmission bevel gear meshes with the worm, the driving gear set includes a large-diameter driving gear and a small-diameter driving gear coaxially connected thereto, the large-diameter driving gear meshes with the small-diameter transmission gear, the small-diameter driving gear meshes with the driving lifting rack, and the diameter of the large-diameter driving gear is larger than that of the large-diameter transmission bevel gear, and the diameter of the small-diameter transmission gear is equal to that of the small-diameter driving gear.

5. The door lock according to claim 1, characterized in that: The housing comprises a first shell and a second shell, and the housing is formed by detachably splicing the first shell and the second shell.

6. The door lock according to claim 1, characterized in that: It comprises a tray, which is sleeved on the top end of the driving shaft, and one end of the tray away from the driving shaft is used for connecting and supporting the door cover.

7. A method for controlling the opening and closing of a door cover, characterized in that: The door cover is opened and closed using the door lock according to any one of claims 1 to 6, and the opening and closing control method comprises the following steps: Driving the lifting seat to rise, so that the driving shaft rises along the axial direction thereof as the lifting seat rises; After the lifting seat rises to a position in contact with the driving rack, the lifting seat drives the driving rack to rise, so that the driving rack is lifted to drive the driving rotating gear set to rotate, and the driving rotating gear set is rotated to drive the driving shaft to rotate, so that the driving shaft rises along its axial direction and rotates around its axial direction at the same time, so as to drive the door cover to open; Drive the lifting seat to descend, and drive the driving rack to descend and reset through the elastic reset member, so that the driving rack can be descended to drive the driving rotating gear set to rotate in the opposite direction to the previous direction, so that the driving rotating gear set can be rotated in the opposite direction to the previous direction to drive the driving shaft to rotate, so that the driving shaft descends along its axial direction and rotates in the opposite direction to the previous direction; and, The lifting seat is continuously driven to descend, so that the lifting seat is disengaged from the driving rack, and the driving shaft is driven to continue to descend along the axial direction, so as to drive the door cover to close.

8. A door cover assembly, characterized in that: For installation in vehicles, including: The door lock according to any one of claims 1 to 6; A door cover is connected to the top end of the drive shaft to switch between a closed position and an open position under the drive of the drive shaft. When the door cover is in the closed position, the door cover covers the energy supply port of the vehicle, and when the door cover is in the open position, the energy supply port is exposed.

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