Door cover structure, oil filling port structure, charging port structure and vehicle

Abstract

The invention relates to a door cover structure, an oil filling port structure, a charging port structure and a vehicle, the door cover structure comprises a cover plate, a port box and a driving device, the port box is provided with an internal opening and an external opening which are mutually spaced in the internal and external directions, and the driving device comprises a power mechanism, a first transmission mechanism and a second transmission mechanism; the power mechanism can drive the cover plate to move outwards to a first preset position from a closing position for closing the external opening through the first transmission mechanism; the power mechanism can further drive the cover plate to horizontally move to a second preset position where the external opening is opened from the first preset position in the preset direction through the second transmission mechanism. Compared with the prior art, the door cover structure does not adopt a cover plate rotating opening mode any more, a cantilever does not need to be arranged, when the cover plate is opened to the maximum state, the cover plate is supported by the first transmission mechanism and the second transmission mechanism, the rotating trend does not exist, and the vertical rigidity is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of hybrid vehicle accessories, and in particular relates to a door cover structure, a fuel filler port structure, a charging port structure and a vehicle. Background Art

[0002] An existing refueling port structure or charging port structure includes a cantilever, an outer cover, a torsion spring, a port box, a rotating shaft and a push motor. The outer cover is fixed on the cantilever to form a cover assembly. Its working principle is: the electrical signal unlocks, a person manually presses the area on the outer cover corresponding to the triggering part of the push motor, and the person manually opens the cover assembly to the maximum opening state (in this process, the torsion spring provides a certain auxiliary operating force). After refueling or charging is completed, the person manually closes the cover assembly and locks it with the push motor structure.

[0003] In order to ensure the cantilever rotation space and the refueling or charging operation space, the existing refueling port structure or charging port structure has a relatively long cantilever, and the vertical stiffness of the cover assembly when it is opened to the maximum state is poor. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in view of the problem that the cantilever of the existing fuel filler port structure or charging port structure is relatively long and the vertical stiffness of the cover assembly is poor when it is opened to the maximum state, a door cover structure, a fuel filler port structure, a charging port structure and a vehicle are provided.

[0005] In order to solve the above technical problems, on the one hand, an embodiment of the present invention provides a door cover structure, including a cover plate, a mouth box and a driving device, wherein the mouth box has an inner opening and an outer opening spaced from each other in the inner and outer directions, and the driving device includes a power mechanism, a first transmission mechanism and a second transmission mechanism;

[0006] The power mechanism can drive the cover plate to move outward from a closed position closing the external opening to a first preset position through the first transmission mechanism;

[0007] The power mechanism can also drive the cover plate to translate from the first preset position along a preset direction to a second preset position opening the external opening through the second transmission mechanism.

[0008] Optionally, it also includes a slide rail mechanism and a sliding mechanism, wherein the slide rail mechanism is connected to the inner side of the cover plate, and the sliding mechanism is fixed on the first transmission mechanism and cooperates with the slide rail mechanism in a sliding manner along the preset direction, so that when the cover plate is translated from the first preset position to the second preset position, the cover plate slides relative to the sliding mechanism along the preset direction.

[0009] Optionally, the preset direction is a direction parallel to the cover plate.

[0010] Optionally, the preset direction is a front-to-back direction, an up-down direction, or a left-to-right direction.

[0011] Optionally, the sliding mechanism comprises a sliding block, a sliding groove is provided on the inner side of the cover plate, and the sliding block can slide in the sliding groove;

[0012] or,

[0013] The sliding mechanism comprises a sliding block, a sliding rail is arranged on the inner side of the cover plate, and the sliding block is sleeved on the sliding rail and can slide along the sliding rail.

[0014] Optionally, the slide rail mechanism includes a first slide rail, which is fixedly connected to the inner side of the cover plate, a ball is arranged between the first slide rail and the cover plate, a ball hole for accommodating the ball is arranged on the first slide rail, and the ball protrudes from the ball hole and is in rolling contact with the sliding mechanism.

[0015] Optionally, the slide rail mechanism includes a first slide rail and a second slide rail, the first slide rail is fixedly connected to the inner side of the cover plate, a ball is arranged between the first slide rail and the second slide rail, a ball hole for accommodating the ball is arranged on the second slide rail, the ball protrudes from the ball hole and is in rolling contact with the sliding mechanism and the first slide rail.

[0016] Optionally, the slide rail mechanism includes a first slide rail and a second slide rail, and the sliding mechanism includes a third slide rail and a limit block, the first slide rail is fixedly connected to the inner side of the cover plate, the third slide rail is fixed on the limit block, a ball is arranged between the first slide rail and the third slide rail, and a ball hole for accommodating the ball is arranged on the second slide rail, the ball protrudes from the ball hole and is in rolling contact with the first slide rail and the third slide rail.

[0017] Optionally, a guide groove for guiding the movement of the limit block is provided in the concave space of the mouth box, and during the process of the cover plate being translated from the first preset position to the second preset position, the limit block always has a portion accommodated in the guide groove.

[0018] Optionally, the second slide rail is flexibly connected to the cover plate.

[0019] Optionally, the second slide rail is connected to the cover plate via a spring;

[0020] The first slide rail is provided with a through hole penetrating in the inward and outward directions, one end of the spring is fixed on the second slide rail, and the other end of the spring passes through the through hole and is fixedly connected to the cover plate.

[0021] Optionally, the first transmission mechanism comprises a first driving rod, a crank, a universal rod and a push rod, the power mechanism has a first output shaft, the first driving rod is coaxially connected to the first output shaft or is integrally formed, one end of the crank is connected to the first driving rod, one end of the universal rod is connected to the other end of the crank by a ball joint, the other end of the universal rod is connected to one end of the push rod by a ball joint, and the other end of the push rod is fixed to the sliding mechanism; the first driving rod is perpendicular to the crank, and the first driving rod is parallel to and spaced from the push rod;

[0022] The first driving rod rotates to drive the crank to rotate, so as to drive the sliding mechanism and the cover plate to move inward and outward directions through the universal rod.

[0023] Optionally, the power mechanism is arranged at the rear of the mouth box, the first driving rod passes through the mouth box, and the crank, universal rod and push rod are located in the concave space of the mouth box.

[0024] Optionally, the second transmission mechanism comprises a second driving rod, a power converter, a telescopic rod and a gear, the power mechanism has a second output shaft, one end of the second driving rod is connected to the second output shaft, the other end of the second driving rod is connected to the power converter, the telescopic rod is nested with the power converter, and the gear is connected to an end of the telescopic rod away from the power converter; the power converter is used to convert the rotational motion of the second driving rod into the telescopic motion of the telescopic rod;

[0025] A rack extending along the preset direction and meshing with the gear is provided on the inner side of the cover plate. The second output shaft of the power mechanism rotates to drive the second driving rod to rotate, so as to drive the telescopic rod to be telescoped relative to the power converter through the power converter, so as to match the displacement of the cover plate from the closed position to the first preset position, thereby maintaining the constant meshing of the gear and the rack.

[0026] Optionally, the power converter comprises an outer cylinder, a rotating shaft and a sliding body, the rotating shaft is arranged in the outer cylinder, the other end of the second driving rod is connected to one end of the rotating shaft, the other end of the rotating shaft is connected to the sliding body, the telescopic rod is inserted in the outer cylinder, the telescopic rod is a hollow shaft, a spiral groove spirally coiled along the axial direction of the telescopic rod is arranged on the inner hole wall of the telescopic rod, and the sliding body is slidably arranged in the spiral groove;

[0027] The second output shaft of the power mechanism rotates to drive the second drive rod, the rotating shaft and the sliding body to rotate, so that the sliding body slides relative to the spiral groove to drive the telescopic rod to extend and retract relative to the outer cylinder.

[0028] Optionally, the second driving rod, the power converter and the power mechanism are arranged at the rear of the mouth box, the telescopic rod passes through the mouth box, and the gear is located in the concave space of the mouth box.

[0029] Optionally, the driving device also includes a mounting seat, the first transmission mechanism and the second transmission mechanism are arranged in the mounting seat, the mounting seat is located behind the mouth box, the first transmission mechanism has a first power output end, the second transmission mechanism has a second power output end, the first power output end is connected to the sliding mechanism, and the second power output end is connected to the cover plate.

[0030] Optionally, the first transmission mechanism comprises a fixed shaft and a first gear shaft, the first gear shaft is a hollow shaft and is sleeved outside the fixed shaft, one end of the fixed shaft extending from the first gear shaft is fixed to the mounting seat; one end of the first gear shaft extending from the mounting seat constitutes the first power output end;

[0031] The second transmission mechanism comprises a rotating shaft and a second gear shaft, wherein the second gear shaft is a hollow shaft and is sleeved outside the rotating shaft, and one end of the rotating shaft extending out of the second gear shaft is rotatably connected to the mounting seat;

[0032] The driving device also includes a synchronous gear mechanism arranged in the mounting seat, the power mechanism has a first output shaft, and the rotation of the first output shaft of the power mechanism drives the first gear shaft and the second gear shaft to move in the inner and outer directions through the synchronous gear mechanism.

[0033] Optionally, the synchronous gear mechanism comprises a first gear, a second gear, a third gear, a fourth gear and a gear shaft, the gear shaft is rotatably connected to the mounting seat, the first gear is connected to the first output shaft of the power mechanism, the second gear, the third gear and the fourth gear are arranged on the gear shaft, and the first gear is meshed with the second gear;

[0034] A first rack structure extending along its axial direction and meshing with the third gear is disposed on the outer peripheral wall of the first gear shaft, and a second rack structure extending along its axial direction and meshing with the fourth gear is disposed on the outer peripheral wall of the second gear shaft.

[0035] Optionally, a row of first tooth-shaped holes is provided on the outer peripheral wall of the first gear shaft along its axial direction, and the row of first tooth-shaped holes constitutes the first rack structure;

[0036] and / or,

[0037] A row of second tooth-shaped holes is arranged on the outer peripheral wall of the second gear shaft along its axial direction, and the row of second tooth-shaped holes constitutes the second rack structure.

[0038] Optionally, a gear constituting the second power output end is disposed at one end of the second gear shaft close to the cover plate, and a rack extending along the preset direction and meshing with the gear is disposed on the inner side of the cover plate;

[0039] The second transmission mechanism also includes a reversing gear set, the circumferential rotation of the second gear shaft and the rotating shaft is restricted, the power mechanism has a second output shaft, and the rotation of the second output shaft of the power mechanism drives the rotating shaft, the second gear shaft and the gear to rotate together through the reversing gear set.

[0040] Optionally, the reversing gear set includes a first bevel gear and a second bevel gear, the first bevel gear is connected to the second output shaft of the power mechanism, and the second bevel gear is arranged on the rotating shaft and is orthogonally meshed with the first bevel gear.

[0041] Optionally, the power mechanism includes a first power source and a second power source;

[0042] The first power source can drive the cover plate to move outward from a closed position closing the external opening to a first preset position through the first transmission mechanism;

[0043] The second power source can drive the cover plate to translate from the first preset position along a preset direction to a second preset position opening the external opening through the second transmission mechanism.

[0044] Optionally, the first power source is a first motor, and the second power source is a second motor.

[0045] Optionally, the power mechanism is a motor having a first output shaft and a second output shaft.

[0046] Optionally, the cover plate includes an outer cover and a reinforcing plate connected to the inner side of the outer cover, and the slide rail mechanism is connected to the inner side of the reinforcing plate.

[0047] Optionally, the inner edge of the reinforcing plate is provided with a circumferential reinforcing plate lip, and the edge of the external opening is provided with a lip groove. When the cover is in the closed position, the reinforcing plate lip is accommodated in the lip groove to seal the gap between the cover and the mouth box.

[0048] Optionally, a sealing ring is pressed into the inner opening.

[0049] Optionally, the mouth box is provided with an annular flange around the external opening, and a plurality of thinning grooves are provided on the outer side surface of the annular flange, so that the thickness of the annular flange at the thinning grooves is smaller than the thickness at other positions of the annular flange.

[0050] Optionally, the mouth box is provided with an annular flange surrounding the external opening, and a buffer block is provided on the outer side of the annular flange away from the first transmission mechanism.

[0051] In the door cover structure of the embodiment of the present invention, the power mechanism can drive the cover plate to move outward from the closed position of the outer opening of the mouth box to the first preset position through the first transmission mechanism; the power mechanism can also drive the cover plate to translate along a preset direction from the first preset position to the second preset position of the outer opening of the mouth box through the second transmission mechanism. Compared with the prior art, the cover plate is no longer rotated to open, and there is no need to set a cantilever. When the cover plate is opened to the maximum state, it is supported by the first transmission mechanism and the second transmission mechanism, and there is no rotation tendency, and the vertical stiffness is good.

[0052] In addition, the installation space occupied by the cantilever in the prior art can be reduced, and the volume of the door cover structure can be reduced.

[0053] In addition, the cover can be opened and closed automatically without manual operation, which enhances the experience and sense of technology.

[0054] On the other hand, an embodiment of the present invention provides a fuel filler opening structure, including a fuel filler pipe and the above-mentioned door cover structure, one end of the fuel filler pipe is connected to the internal opening, and the other end of the fuel filler pipe is used to connect to the fuel tank.

[0055] On the other hand, an embodiment of the present invention provides a charging port structure, including a charging base and the above-mentioned door cover structure, wherein the charging base is connected to the internal opening.

[0056] On the other hand, an embodiment of the present invention further provides a vehicle, which includes the above-mentioned door cover structure, fuel filler port structure or charging port structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 is an exploded view of the door cover structure provided by the first embodiment of the present invention;

[0058] Figure 2 is a schematic diagram of an outer cover of a door cover structure provided by a first embodiment of the present invention;

[0059] Figure 3 is a schematic diagram of a reinforcing plate of a door cover structure provided by a first embodiment of the present invention;

[0060] Figure 4 yes Figure 3 Another perspective of the picture;

[0061] Figure 5 is a schematic diagram of an opening box of a door cover structure provided by a first embodiment of the present invention;

[0062] Figure 6 yes Figure 5Another perspective of the picture;

[0063] Figure 7 is a schematic diagram of a driving device for a door cover structure provided by a first embodiment of the present invention;

[0064] Figure 8 is a cross-sectional view of a door cover structure provided by a first embodiment of the present invention;

[0065] Fig. 9 is a schematic diagram of the meshing of the gear and rack of the door cover structure provided by the first embodiment of the present invention;

[0066] Fig.10 It is a schematic diagram of the installation of the reinforcing plate and the opening box of the door cover structure provided by the first embodiment of the present invention;

[0067] Fig.11 It is a schematic diagram of the installation of the driving device and the opening box of the door cover structure provided by the first embodiment of the present invention;

[0068] Fig.12 yes Fig.11 Another perspective of the picture;

[0069] Fig.13 is a schematic diagram of a cover plate of a door cover structure provided by a first embodiment of the present invention in a closed position;

[0070] Fig.14 is a schematic diagram of a cover plate of a door cover structure provided by the first embodiment of the present invention being in a second preset position;

[0071] Fig.15 is a schematic diagram of a door cover structure provided by a second embodiment of the present invention (without the mouth box);

[0072] Fig.16 is a schematic diagram of a driving device for a door cover structure provided by a second embodiment of the present invention;

[0073] Fig.17 is a schematic diagram of an outer cover of a door cover structure provided by a second embodiment of the present invention;

[0074] Fig.18 is a schematic diagram of a reinforcing plate of a door cover structure provided by a second embodiment of the present invention;

[0075] Fig.19 yes Fig.18 Another perspective of the picture;

[0076] Fig. 20 is a schematic diagram of a first slide rail of a door cover structure provided in a second embodiment of the present invention;

[0077] Fig.21 is a schematic diagram of a second slide rail of a door cover structure provided in a second embodiment of the present invention;

[0078] Fig. 22 is a schematic diagram of a third slide rail of a door cover structure provided in a second embodiment of the present invention;

[0079] Fig.23 is a schematic diagram of a limiting block of a door cover structure provided in a second embodiment of the present invention;

[0080] Fig.24 yes Fig.23 The cross-sectional view along the AA direction;

[0081] Fig.25 is a schematic diagram of an opening box of a door cover structure provided by a second embodiment of the present invention;

[0082] Fig.26 yes Fig.25 The cross-sectional view along the BB direction;

[0083] Fig. 27 It is a schematic diagram of the assembly of the reinforcing plate and the slide rail mechanism of the door cover structure provided by the second embodiment of the present invention;

[0084] Fig.28 yes Fig. 27 Cross-sectional view along CC direction;

[0085] Fig.29 yes Fig.28 A partial enlarged view of

[0086] Fig.30 yes Fig. 27 The cross-sectional view along the DD direction;

[0087] Fig.31 yes Fig.30 A partial enlarged view of

[0088] Fig.32 yes Fig.15 Another perspective of the picture;

[0089] Fig.33 yes Fig.32 A cross-sectional view along the EE direction;

[0090] Fig.34 yes Fig.33 A partial enlarged view of

[0091] Fig.35 is an internal structural diagram of a door cover structure provided by a second embodiment of the present invention;

[0092] Fig.36 is a schematic diagram of a cover plate of a door cover structure provided by a second embodiment of the present invention in a closed position;

[0093] Fig.37 yes Fig.36A cross-sectional view along the FF direction;

[0094] Fig.38 It is a schematic diagram showing that the cover plate of the door cover structure provided by the second embodiment of the present invention is in a second preset position.

[0095] The reference numerals in the specification are as follows:

[0096] 1. Cover plate; 11. Installation space; 12. Rack; 13. Outer cover; 131. First buckle; 14. Reinforcement plate; 141. First slot; 142. Reinforcement plate lip; 2. Mouth box; 21. Internal opening; 22. External opening; 23. Concave space; 231. Guide groove; 24. Lip groove; 25. Annular flange; 251. Thinning groove; 252. Buffer block; 27. Third slot; 28. Fourth slot; 3 , power mechanism; 4, first transmission mechanism; 41, first drive rod; 42, crank; 43, universal rod; 44, push rod; 45, fixed shaft; 46, first gear shaft; 461, first rack structure; 462, first toothed hole; 463, head; 5, second transmission mechanism; 51, second drive rod; 52, power converter; 521, outer cylinder; 53, telescopic rod; 54, gear; 55, rotating shaft; 56, first gear shaft; 57, first gear shaft; 58, first gear shaft; 59, first gear shaft; 60, first gear shaft; 61, first gear shaft; 62, first gear shaft; 63, first gear shaft; 64, first gear shaft; 65, first gear shaft; 66, first gear shaft; 67, first gear shaft; 68, first gear shaft; 69, first gear shaft; 70, first gear shaft; 71, first gear shaft; 72, first gear shaft; 73, first gear shaft; 74, first gear shaft; 75, first gear shaft; 76, first gear shaft; 77, first gear shaft; 78, first gear shaft; 79, first gear shaft; 80, first gear shaft; 81, first gear shaft; 82, first gear shaft; 83, first gear shaft; 84, first gear shaft; 85, first gear shaft; 86, first gear shaft; 87, first gear shaft; 88, first gear shaft; 89, first gear shaft; 90, first gear shaft; 91, first gear shaft; 92, first gear shaft; 93, first gear shaft; 94, first gear shaft; 95, first gear shaft; 96, first gear shaft Second gear shaft; 561, second rack structure; 562, second toothed hole; 57, first bevel gear; 58, second bevel gear; 6, slide rail mechanism; 61, first slide rail; 610, through hole; 611, groove; 612, main body; 613, ball bearing support; 614, hook; 62, second slide rail; 620, mounting hole; 63, ball bearing; 621, ball bearing hole; 64, spring; 65, screw; 7, slide mechanism Structure; 71, third slide rail; 711, convex plate; 712, connecting portion; 713, supporting portion; 7131, pit; 714, bending portion; 7141, guide groove; 72, limit block; 721, accommodating groove; 722, notch groove; 8, sealing ring; 9, mounting seat; 10, synchronous gear mechanism; 101, first gear; 102, second gear; 103, third gear; 104, fourth gear; 105, gear shaft. DETAILED DESCRIPTION

[0097] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0098] Herein, the up-down, left-right, and front-back directions are based on the orientation of the vehicle when it is placed horizontally, wherein the inner direction refers to the direction pointing to the inside of the vehicle compartment, and the outer direction refers to the direction pointing to the outside of the vehicle compartment. The door cover structure provided by the embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0099] First embodiment

[0100] like Figures 1 to 14 As shown, the door cover structure provided by the first embodiment of the present invention includes a cover plate 1, a mouth box 2 and a driving device, wherein the mouth box 2 has an inner opening 21 and an outer opening 22 spaced apart from each other in the inner and outer directions, and the driving device includes a power mechanism 3, a first transmission mechanism 4 and a second transmission mechanism 5; the power mechanism 3 can drive the cover plate 1 from a closed position (such as a closed position) closing the outer opening to a closed position (such as a closed position) closing the outer opening through the first transmission mechanism 4. Fig.13 The cover plate 1 is moved outwardly to the first preset position (as shown in the figure), that is, the cover plate 1 is translated outwardly for a certain distance to reach the first preset position; the power mechanism 3 can also drive the cover plate 1 to translate from the first preset position along the preset direction to the second preset position (as shown in the figure) opening the external opening 22 through the second transmission mechanism 5. Fig.14 As shown). The first preset position is located on the side of the cover plate 1 that is in the closed position close to the outside of the vehicle when the cover plate 1 closes the external opening. In the direction perpendicular to the cover plate 1, the first preset position corresponds to the closed position, and the first preset position is located on the outside of the outer surface of the side panel metal. The second preset position is when the cover plate 1 moves to the charging port or the fuel filler port open position where charging or refueling operations can be performed. When the power mechanism 3 is able to drive the cover plate 1 to move outward from the closed position closing the external opening to the first preset position through the first transmission mechanism 4, it is preferably a linear motion to improve the stability of the operation of the cover plate 1. Other non-linear motions can also achieve the opening of the charging port or the fuel filler port of the present application.

[0101] It also includes a slide rail mechanism 6 and a sliding mechanism 7, wherein the slide rail mechanism 6 is connected to the inner side of the cover plate 1, and the sliding mechanism 7 is fixed to the first transmission mechanism 4 and slides with the slide rail mechanism 6 along the preset direction, so that during the translation of the cover plate 1 from the first preset position to the second preset position, the cover plate 2 slides along the preset direction relative to the sliding mechanism 7. When the cover plate 1 is opened to the maximum position, the first transmission mechanism 4 provides support for the cover plate 1 through the slide rail mechanism 5 and the sliding mechanism 7, greatly improving the rigidity and strength of the cover plate 1.

[0102] Preferably, the preset direction is a direction parallel to the cover plate. That is, the sliding plane of the cover plate 1 is parallel and perpendicular to the inner and outer directions. For example, when the door cover structure is arranged on the side of the vehicle, the preset direction may be the front-to-back direction or the up-down direction. For another example, when the door cover structure is arranged on the front face of the vehicle, the preset direction may be the left-right direction or the up-down direction. For another example, when the door cover structure is arranged on the rear of the vehicle, the preset direction may be the left-right direction or the up-down direction.

[0103] See also Figure 8The slide rail mechanism 6 includes a first slide rail 61 and a second slide rail 62, and the sliding mechanism 7 includes a third slide rail 71 and a stop block 72. The first slide rail 61 is fixedly connected to the inner side of the cover plate 2, and the third slide rail 71 is fixed to the stop block 72 by gluing or other methods. A ball 63 is arranged between the first slide rail 61 and the third slide rail 71, and a ball hole 621 for accommodating the ball 63 is arranged on the second slide rail 62. The ball 63 protrudes from the ball hole 621 and rolls with the first slide rail 61 and the third slide rail 71. The first slide rail 61 slides relative to the third slide rail 71 together with the cover plate 1, and the second slide rail 62 moves with the first slide rail 61, and the ball 63 rolls in the ball hole 621, thereby enhancing the sliding stability and smoothness of the cover plate 1.

[0104] Both sides of the second slide rail 62 in the width direction are provided with a plurality of ball holes 621 arranged along the length direction of the second slide rail 62 . Correspondingly, two rows of balls 63 are arranged along the length direction of the second slide rail 62 , and a ball 63 is arranged in each ball hole 621 .

[0105] See also Figure 8 The inner side of the cover plate 1 is provided with an outwardly concave installation space 11, and the first slide rail 61 is roughly U-shaped and interference-fitted in the installation space 11. The second slide rail 62 is linked with the first slide rail 61 by means of the ball 63. A groove 611 capable of accommodating and holding the ball 63 is formed on both sides of the first slide rail 61 in the width direction to prevent the ball 63 from falling off, and the groove 611 extends along the length direction of the first slide rail 61. Both sides of the third slide rail 71 in the width direction are provided with convex plates 711 protruding toward the cover plate 1 and extending along the length direction of the third slide rail 71, and the ball 63 is supported between the bottom wall of the groove 611 and the convex plate 711.

[0106] The second slide rail 62 is also accommodated in the installation space 11, so that the slide rail mechanism 6 is embedded in the installation space 11 inside the reinforcing plate 14, the structure is more compact, and it can strengthen the cover plate 1. The cover plate 1 is opened by sliding along a preset direction, and the movement of the cover plate 1 is only inward and outward movement and sliding translation in a preset direction. During the opening and closing process of the cover plate 1, there is no rotation movement, and no rotation space is required.

[0107] See also Figure 5 and Fig.11 The inner concave space 23 of the mouth box 2 is provided with a guide groove 231 for guiding the movement of the limit block 72. During the translation of the cover plate 1 from the first preset position to the second preset position, the limit block 72 always has a portion accommodated in the guide groove 231. That is, during the movement of the cover plate 1, the guide groove 231 always provides movement guidance for the limit block 72.

[0108] See also Fig. 9The first transmission mechanism 4 includes a first driving rod 41, a crank 42, a universal rod 43 and a push rod 44. The power mechanism 3 has a first output shaft. The first driving rod 41 is coaxially connected to the first output shaft or is integrally formed. One end of the crank 42 is connected to the first driving rod 41, and one end of the universal rod 43 is connected to the other end of the crank 42 with a ball joint. The other end of the universal rod 43 is connected to one end of the push rod 44 with a ball joint. The other end of the push rod 44 is fixed on the sliding mechanism 7, specifically, the other end of the push rod 44 is fixed on the limit block 72; the first driving rod 41 is perpendicular to the crank 42, and the first driving rod 41 is parallel to and spaced from the push rod 44. The rotation of the first driving rod 41 drives the crank 42 to rotate, so as to drive the sliding mechanism 7 and the cover plate 2 to move in the inward and outward directions through the universal rod 43. That is, the first driving rod 41 and the push rod 44 are eccentrically arranged, so that when the crank 42 rotates (makes circular motion on the mounting surface of the mouth box 2), the universal rod 43 can drive the push rod 44 and the sliding mechanism 7 to reciprocate in the inner and outer directions, thereby driving the cover plate 1 to reciprocate in the inner and outer directions between the closed position and the first preset position.

[0109] See also Fig.11 and Fig.12 The power mechanism 3 is arranged at the rear of the mouth box 2 , the first driving rod 41 passes through the mouth box 2 , and the crank 42 , the universal rod 43 and the push rod 44 are located in the concave space 23 of the mouth box 2 .

[0110] See also Figure 3 and Fig. 9 The second transmission mechanism 5 includes a second drive rod 51, a power converter 52, a telescopic rod 53 and a gear 54. The power mechanism 3 has a second output shaft. One end of the second drive rod 51 is connected to the second output shaft, and the other end of the second drive rod 51 is connected to the power converter 52. The telescopic rod 53 is nested with the power converter 52, and the gear 54 is connected to the end of the telescopic rod 53 away from the power converter 52. The power converter 52 is used to convert the rotational motion of the second drive rod 51 into the telescopic motion of the telescopic rod 53. The inner side of the cover plate 1 is provided with a rack 12 extending along the preset direction and meshing with the gear 54. The second output shaft of the power mechanism 3 rotates to drive the second drive rod 51 to rotate, so as to drive the telescopic rod 53 to telescope relative to the power converter 52 through the power converter 52, so as to match the displacement of the cover plate 1 from the closed position to the first preset position, thereby maintaining the constant meshing of the gear 54 with the rack 12. That is, when the cover plate 1 moves in the inner and outer directions, the gear 54 needs to keep synchronization with the cover plate 1. The rack 12 is provided inside the reinforcing plate 14 .

[0111] The power converter 52 includes an outer cylinder 521, a rotating shaft (not shown in the figure) and a sliding body (not shown in the figure), the rotating shaft is arranged in the outer cylinder 521, the other end of the second drive rod 51 is connected to one end of the rotating shaft, and the other end of the rotating shaft is connected to the sliding body, the telescopic rod 53 is inserted in the outer cylinder 521, the telescopic rod 53 is a hollow shaft, and the inner hole wall of the telescopic rod 53 is provided with a spiral groove that spirally rises along the axial direction of the telescopic rod 53, and the sliding body is slidably arranged in the spiral groove; the second output shaft of the power mechanism 3 rotates to drive the second drive rod 51, the rotating shaft and the sliding body to rotate, so as to drive the telescopic rod 53 to extend and retract relative to the outer cylinder 521 through the sliding of the sliding body relative to the spiral groove.

[0112] The second driving rod 51 and the rotating shaft can be integrally formed.

[0113] See also Fig.11 and Fig.12 The second driving rod 51 and the power converter 52 are arranged at the rear of the mouth box 2 , the telescopic rod 53 passes through the mouth box 2 , and the gear 54 is located in the concave space 23 of the mouth box 2 .

[0114] The driving device also includes a mounting seat (not shown in the figure), the first transmission mechanism 4 and the second transmission mechanism 5 are arranged in the mounting seat, and the mounting seat is located behind the mouth box 2. The first transmission mechanism 4 has a first power output end (i.e., the push rod 44), and the second transmission mechanism 5 has a second power output end (i.e., the gear 54). The first power output end is connected to the sliding mechanism 6, and the second power output end is connected to the cover plate 1 (i.e., the gear 54 is engaged with the rack 12).

[0115] The power mechanism 3 is a motor having a first output shaft and a second output shaft.

[0116] Of course, the motor can also be replaced by other components, for example, a combination of a linear actuator and a direction converter. The linear actuator is, for example, a cylinder or a hydraulic cylinder, and the direction converter can be a gear rack. The linear actuator drives the gear rack to move, thereby driving the gear to rotate.

[0117] See also Figure 1 The cover plate 1 comprises an outer cover 13 and a reinforcing plate 14 connected to the inner side of the outer cover 13, and the slide rail mechanism 6 is connected to the inner side of the reinforcing plate 14. The outer cover 13 serves as a decoration and has a smooth outer surface.

[0118] See also Figure 2 and Figure 4A first clip 131 is provided on the inner side of the outer cover 13, and a first slot 141 is provided on the outer side of the reinforcing plate 14 at a position corresponding to the first clip 131. The first clip 131 is snapped into the first slot 141 to fix the outer cover 13 on the reinforcing plate 14.

[0119] See also Figure 3 and Figure 4 The inner edge of the reinforcing plate 14 is provided with a reinforcing plate lip 142 which surrounds the inner edge of the reinforcing plate 14, and the edge of the outer opening 22 is provided with a lip groove 24. When the cover plate 1 is in the closed position, the reinforcing plate lip 142 is accommodated in the lip groove 24 to seal the gap between the cover plate 1 and the mouth box 2, and form a sealed space between the cover plate 1 and the mouth box 2. The waterproof sealing of the cover plate structure is realized to prevent water, dust and other impurities from entering the mouth box 2.

[0120] See also Figure 5 A sealing ring 8 is pressed into the inner opening 31. The shape of the sealing ring 8 is adapted to the charging seat or the refueling pipe.

[0121] The mouth box 2 is provided with an annular flange 25 around the external opening 32, and a plurality of thinning grooves 251 are provided on the outer surface of the annular flange 25, so that the thickness of the annular flange 25 at the thinning grooves 251 is smaller than the thickness at other positions of the annular flange 251. The function of the thinning grooves 251 is that in an emergency, the door cover structure can be destroyed without damaging the side panel metal to open the cover plate for refueling or charging.

[0122] A buffer block 252 is provided on the outer side of the annular flange 25 at a side away from the first transmission mechanism 6. The buffer block 252 is used to prevent the cover plate 1 from collapsing at a location far from the first transmission mechanism 6 in a static state, and plays a role in ensuring the appearance gap and flushness. Figure 5 In the embodiment, two buffer blocks 252 are arranged at intervals.

[0123] See also Figure 6 A second buckle is provided on the inner edge of the mouth box 2, and the second buckle is engaged with a second slot on the body sheet metal (such as the side panel sheet metal) to fix the mouth box 2 on the body sheet metal.

[0124] See also Figure 6 and Fig.12 The inner side of the mouth box 2 is also provided with a third card slot 27 and a fourth card slot 28. The third card slot 27 is used to card the power mechanism 3 to fix the power mechanism on the mouth box 2. The fourth card slot 28 is used to card the power converter 52 to fix the outer cylinder 521 of the power converter 52 on the mouth box 2.

[0125] Compared with the prior art, the door cover structure of the embodiment of the present invention no longer adopts the cover plate rotating opening method, and does not need to set a cantilever. When the cover plate 1 is opened to the maximum state, it is supported by the first transmission mechanism 4 and the second transmission mechanism 5, and there is no rotation tendency, and the vertical stiffness is good.

[0126] In the prior art, the cover plate is opened manually, which has a poor user experience. In the door cover structure of the embodiment of the present invention, the cover plate 1 can be opened and closed automatically without manual operation, which enhances the user experience and sense of technology.

[0127] In the prior art, the cantilever arrangement space is large, resulting in a large volume of the entire door cover structure. The door cover structure of the embodiment of the present invention no longer has a rotating arm, which can reduce the installation space occupied by the cantilever in the prior art and reduce the volume of the door cover structure.

[0128] In addition, the slide rail mechanism 7 is embedded in the installation space 11 of the reinforcing plate 14, which improves the anti-dent strength of the cover plate 1 in static state. For example, when the door cover structure is installed on the side panel metal, the anti-dent strength of the side panel metal can be improved.

[0129] The door cover structure of this embodiment has the following working principle:

[0130] When the cover 1 is in the closed state, an electric signal is sent to the power mechanism 3 through human operation, and the first output shaft of the power mechanism 3 rotates to drive the first driving rod 41 and the crank 42 to rotate, and the rotational motion of the crank is converted into the outward motion of the top rod 44 through the universal rod 43, driving the sliding mechanism 7, the slide rail mechanism 6, and the cover 1 to move outward together. At the same time, the second output shaft of the power mechanism 3 rotates to drive the second driving rod 51 to rotate, and then drives the telescopic rod 53 to move outward through the power converter 52 (the telescopic rod 53 rotates and moves outward), so that the gear 54 is always engaged with the rack 12 on the reinforcing plate 14. In this way, the cover 1 leaves the external opening 22 of the opening box 2 and moves from the closed position to the first preset position. Then, the first output shaft of the control power mechanism 3 does not output power, and the second output shaft of the power mechanism 3 rotates to drive the second driving rod 51 to rotate. Since the telescopic rod 53 is in the maximum extension position, the telescopic rod 53 no longer moves outward, and the telescopic rod 53 is driven to rotate around its own axis through the power converter 52, and then through the meshing of the gear 54 and the rack 12, the cover plate 1 slides along the preset direction and gradually opens the external opening 22 until the external opening 22 is opened to the maximum state, and the second output shaft of the power mechanism 3 stops rotating. After refueling or charging is completed, the second output shaft of the power mechanism 3 rotates in the opposite direction to drive the gear 43 to rotate in the opposite direction through the power converter 52 and the telescopic rod 53, and drive the cover plate 1 to slide in the opposite direction. After the cover plate 1 returns to the first preset position, the first output shaft of the power mechanism 3 also rotates in the opposite direction, driving the sliding mechanism 7, the slide rail mechanism 6 and the cover plate 1 to move inward until the cover plate 1 returns to the closed state.

[0131] Second embodiment

[0132] Figures 15 to 38 The door cover structure provided by the second embodiment of the present invention is shown, which is mainly different from the first embodiment in that the driving device is different.

[0133] In this embodiment, see Fig.15 , Figure 32-35 The driving device includes a first transmission mechanism 4, a second transmission mechanism 5 and a mounting seat 9. The first transmission mechanism 4 and the second transmission mechanism 5 are arranged in the mounting seat 9. The mounting seat 9 is located behind the mouth box 2. The first transmission mechanism 4 has a first power output end, and the second transmission mechanism 5 has a second power output end. The first power output end is connected to the sliding mechanism 7, and the second power output end is connected to the cover plate 1.

[0134] Specifically, the first transmission mechanism 4 includes a fixed shaft 45 and a first gear shaft 46, the first gear shaft 46 is a hollow shaft and is sleeved outside the fixed shaft 45, and one end of the fixed shaft 45 extending from the first gear shaft 46 is fixed to the mounting seat 9; one end of the first gear shaft 46 extending from the mounting seat 9 constitutes the first power output end; the second transmission mechanism 5 includes a rotating shaft 55 and a second gear shaft 56, the second gear shaft 56 is a hollow shaft and is sleeved outside the rotating shaft 55, and one end of the rotating shaft 55 extending from the second gear shaft 56 is rotatably connected to the mounting seat 9. The driving device also includes a synchronous gear mechanism 10 arranged in the mounting seat 9, and the power mechanism 3 has a first output shaft, and the rotation of the first output shaft of the power mechanism 3 drives the first gear shaft 46 and the second gear shaft 56 to move in the inner and outer directions through the synchronous gear mechanism 10.

[0135] The synchronous gear mechanism 10 includes a first gear 101, a second gear 102, a third gear 103, a fourth gear 104 and a gear shaft 105, the gear shaft 105 is rotatably connected to the mounting seat 9, the first gear 101 is connected to the first output shaft of the power mechanism 3, the second gear 102, the third gear 103 and the fourth gear 104 are arranged on the gear shaft 105, and the first gear 101 is meshed with the second gear 102; a first rack structure 461 extending along its axial direction and meshing with the third gear 103 is provided on the outer peripheral wall of the first gear shaft 46, and a second rack structure 561 extending along its axial direction and meshing with the fourth gear 104 is provided on the outer peripheral wall of the second gear shaft 56.

[0136] The outer peripheral wall of the first gear shaft 46 is provided with a row of first tooth-shaped holes 462 along its axial direction, and the row of first tooth-shaped holes 462 constitutes the first rack structure 461; the outer peripheral wall of the second gear shaft 56 is provided with a row of second tooth-shaped holes 562 along its axial direction, and the row of second tooth-shaped holes 562 constitutes the second rack structure 561. The third gear 103 rotates to drive the first gear shaft 46 to move inward and outward, and the fourth gear 104 rotates to drive the second gear shaft 56 to move inward and outward.

[0137] The end of the second gear shaft 56 close to the cover plate 1 is provided with a gear 54 constituting the second power output end, and the inner side of the cover plate 1 is provided with a rack 12 extending along the preset direction and meshing with the gear 54; the second transmission mechanism 5 also includes a reversing gear set, and the circumferential rotation of the second gear shaft 56 and the rotating shaft 55 is restricted, that is, the second gear shaft 56 can move inward and outward along the rotating shaft 55, but cannot rotate relative to the rotating shaft 55. The power mechanism 3 has a second output shaft, and the rotation of the second output shaft of the power mechanism 3 drives the rotating shaft 55, the second gear shaft 56 and the gear 54 to rotate integrally through the reversing gear set.

[0138] The reversing gear set includes a first bevel gear 57 and a second bevel gear 58 . The first bevel gear 57 is connected to the second output shaft of the power mechanism 3 , and the second bevel gear 58 is disposed on the rotating shaft 55 and is orthogonally meshed with the first bevel gear 57 .

[0139] The second embodiment is different from the first embodiment in that the second slide rail 62 is flexibly connected to the cover plate 1, ensuring that the ball 63 will not get stuck when rolling.

[0140] See Figure Fig. 20 , Fig.29 and Fig.31 The second slide rail 62 is connected to the cover plate 2 through a spring 64; a through hole 610 is provided on the first slide rail 61 and passes through the through hole 610 in the inward and outward directions, one end of the spring 64 is fixed on the second slide rail 62, and the other end of the spring 64 passes through the through hole 610 and is fixedly connected to the cover plate 2.

[0141] Specifically, a mounting hole 620 is provided on the second slide rail 62 , one end of the spring 64 is fixed to the second slide rail 62 by a screw 65 passing through the mounting hole 620 , and the other end of the spring 64 is hooked on the inner side of the reinforcing plate 14 .

[0142] See also Fig.31The third slide rail 71 includes a connecting portion 712, supporting portions 713 connected to both sides of the connecting portion 712 in the width direction, and a bending portion 714 connected to a side of the supporting portion 713 away from the connecting portion 712. The connecting portion 712 and the bending portion 714 are fixed to the limit block 72 by gluing or other methods. The supporting portion 713 is spaced apart from the limit block 72. The bending portion 714 is provided with a guide groove 7141 recessed toward the center of the limit block 72. The first slide rail 61 includes a main body 612, a ball bearing support portion 613 connected to both sides of the main body 612 in the width direction, and a hook portion 614 connected to the side of the ball bearing support portion 613 away from the main body 612. The main body 612 and the ball bearing support portion 613 are spaced apart from the second slide rail 62. The hook portion 614 extends from the opening of the installation space 11 and bends toward the bending portion 714. The hook portion 614 is slidably inserted in the guide groove 7141. The guide groove 7141 can guide the sliding of the slide rail mechanism 6 to ensure the sliding stability of the slide rail mechanism 6 and the cover plate 1. The ball bearing 63 is supported between the ball bearing support portion 612 and the support portion 713.

[0143] The hook portion 614 is press-fitted with the inner wall of the opening of the installation space 11 by interference fit, so as to fix the first slide rail 61 on the inner side of the reinforcing plate 14 .

[0144] The ball support portion 613 is provided with a groove 611 , the support portion 713 is provided with a pit 7131 , and the ball 63 is located between the groove 611 and the pit 7131 .

[0145] See also Fig.23 , Fig.24 , Fig.31 and Fig.34 The limiting block 72 is provided with a receiving groove 721, the first gear shaft 46 has a columnar head 463, the outer diameter of the head 463 is larger than the diameter of other parts of the first gear shaft 46, and the head 463 is clamped in the receiving groove 721, so that the first gear shaft 46 and the limiting block 72 are easy to disassemble. The limiting block 72 is provided with notch grooves 722 on opposite sides, and the bending portion 714 is embedded in the notch grooves 722, which can reduce the space occupied by the bending portion 714, making the structure of the sliding mechanism 7 more compact.

[0146] Third embodiment (not shown)

[0147] The door cover structure provided by the third embodiment is different from that of the first embodiment in that the slide rail mechanism is different.

[0148] Specifically, the sliding mechanism includes a sliding block, and a sliding groove is provided on the inner side of the cover plate, and the sliding block can slide in the sliding groove.

[0149] Compared with the first embodiment, the slider and the slide groove slide in cooperation with each other, and the number of parts is reduced.

[0150] Preferably, the slide groove is a linear slide groove to improve the stability of the movement of the cover plate 1.

[0151] The door cover structure of this embodiment has the following working principle:

[0152] When the cover 1 is in the closed state, an electric signal is sent to the power mechanism 3 through human operation, and the first output shaft of the power mechanism 3 rotates, and the first gear shaft 46 and the second gear shaft 56 are driven to move outward through the synchronous gear mechanism 10, and the sliding mechanism 7, the slide rail mechanism 6, and the cover 1 are driven to move outward together, and the gear 54 is always engaged with the rack 12 on the reinforcing plate 14. In this way, the cover 1 leaves the external opening 22 of the opening box 2 and moves from the closed position to the first preset position. Then, the first output shaft of the power mechanism 3 is controlled not to output power, and the second output shaft of the power mechanism 3 rotates to drive the first bevel gear 57 to rotate, and the first bevel gear 57 drives the second bevel gear 58, the rotating shaft 55, the second gear shaft 56 and the gear 54 to rotate together, and then through the engagement of the gear 54 with the rack 12, the cover 1 slides along the preset direction, gradually opens the external opening 22, until the external opening 22 is opened to the maximum state, and the second output shaft of the power mechanism 3 stops rotating. After refueling or charging is completed, the second output shaft of the power mechanism 3 rotates in the opposite direction to drive the gear 43 to rotate in the opposite direction through the first bevel gear 57, the second bevel gear 58, the rotating shaft 55 and the second gear shaft 56, and drive the cover 1 to slide in the opposite direction. After the cover 1 returns to the first preset position, the second output shaft of the power mechanism 3 is controlled not to output power, and the first output shaft of the power mechanism 3 rotates in the opposite direction, and drives the first gear shaft 46 and the second gear shaft 56 to move inwardly through the synchronous gear mechanism 10, thereby driving the sliding mechanism 7, the slide rail mechanism 6, the cover 1 and the gear 54 to move inwardly until the cover 1 returns to the closed state.

[0153] Fourth embodiment (not shown)

[0154] The door cover structure provided by the third embodiment is different from that of the first embodiment in that the slide rail mechanism is different.

[0155] Specifically, the sliding mechanism includes a sliding block, a sliding rail is arranged on the inner side of the cover plate, and the sliding block is sleeved on the sliding rail and can slide along the sliding rail.

[0156] Compared with the first embodiment, the slide block slides in cooperation with the slide rail, and the number of parts is reduced.

[0157] Preferably, the slide rail is a linear slide rail to improve the stability of the movement of the cover plate 1.

[0158] Fifth embodiment (not shown)

[0159] The door cover structure provided in the fifth embodiment is different from that in the second embodiment in that the slide rail mechanism is different.

[0160] Specifically, the sliding mechanism includes a sliding block, and a sliding groove is provided on the inner side of the cover plate, and the sliding block can slide in the sliding groove.

[0161] Compared with the second embodiment, the slider and the slide groove slide in cooperation with each other, and the number of parts is reduced.

[0162] Sixth embodiment (not shown)

[0163] The door cover structure provided in the sixth embodiment is different from that in the second embodiment in that the slide rail mechanism is different.

[0164] Specifically, the sliding mechanism includes a sliding block, a sliding rail is arranged on the inner side of the cover plate, and the sliding block is sleeved on the sliding rail and can slide along the sliding rail.

[0165] Compared with the second embodiment, the slide block slides in cooperation with the slide rail, and the number of parts is reduced.

[0166] Seventh embodiment (not shown)

[0167] The door cover structure provided in the seventh embodiment is different from that in the first embodiment in that the slide rail mechanism is different.

[0168] Specifically, the slide rail mechanism includes a first slide rail, which is fixedly connected to the inner side of the cover plate, a ball is arranged between the first slide rail and the cover plate, and a ball hole for accommodating the ball is arranged on the first slide rail. The ball protrudes from the ball hole and is in rolling contact with the sliding mechanism.

[0169] Compared with the first embodiment, there is only one slide rail, and the number of parts is reduced.

[0170] Eighth embodiment (not shown)

[0171] The door cover structure provided in the eighth embodiment is different from that in the second embodiment in that the slide rail mechanism is different.

[0172] Specifically, the slide rail mechanism includes a first slide rail, which is fixedly connected to the inner side of the cover plate, a ball is arranged between the first slide rail and the cover plate, and a ball hole for accommodating the ball is arranged on the first slide rail. The ball protrudes from the ball hole and is in rolling contact with the sliding mechanism.

[0173] Compared with the first embodiment, there is only one slide rail, and the number of parts is reduced.

[0174] Ninth embodiment (not shown)

[0175] The door cover structure provided in the ninth embodiment is different from that in the first embodiment in that the slide rail mechanism is different.

[0176] Specifically, the slide rail mechanism includes a first slide rail and a second slide rail, the first slide rail is fixedly connected to the inner side of the cover plate, a ball is arranged between the first slide rail and the second slide rail, and a ball hole for accommodating the ball is arranged on the second slide rail. The ball protrudes from the ball hole and is in rolling contact with the sliding mechanism and the first slide rail.

[0177] Compared with the first embodiment, the third slide rail is reduced.

[0178] Tenth embodiment (not shown)

[0179] The door cover structure provided in the tenth embodiment is different from that in the second embodiment in that the slide rail mechanism is different.

[0180] Specifically, the slide rail mechanism includes a first slide rail and a second slide rail, the first slide rail is fixedly connected to the inner side of the cover plate, a ball is arranged between the first slide rail and the second slide rail, and a ball hole for accommodating the ball is arranged on the second slide rail. The ball protrudes from the ball hole and is in rolling contact with the sliding mechanism and the first slide rail.

[0181] Compared with the second embodiment, the third slide rail is reduced.

[0182] Eleventh embodiment (not shown)

[0183] The door cover structure provided by the eleventh embodiment is different from that of the first embodiment in that the power mechanism is divided into two independent ones.

[0184] Specifically, the power mechanism includes a first power source and a second power source; the first power source can drive the cover plate to move outward from a closed position closing the external opening to a first preset position through the first transmission mechanism; the second power source can drive the cover plate to translate from the first preset position along a preset direction to a second preset position opening the external opening through the second transmission mechanism.

[0185] By using two independent power sources to drive the first transmission mechanism and the second transmission mechanism respectively, the control is simpler, and the first transmission mechanism and the second transmission mechanism can be independent of each other to avoid mutual influence. The number of parts of the first transmission mechanism and the second transmission mechanism can be reduced, thereby simplifying the structure of the first transmission mechanism and the second transmission mechanism.

[0186] The first power source is a first motor, and the second power source is a second motor.

[0187] Of course, the motor can also be replaced by other components, for example, a combination of a linear actuator and a direction converter. The linear actuator is, for example, a cylinder or a hydraulic cylinder, and the direction converter can be a gear rack. The linear actuator drives the gear rack to move, thereby driving the gear to rotate.

[0188] In addition, an embodiment of the present invention further provides a fuel filler opening structure, including a fuel filler pipe and a door cover structure of any of the above embodiments, one end of the fuel filler pipe is connected to the internal opening 21, and the other end of the fuel filler pipe is used to connect to the fuel tank.

[0189] The sealing ring 8 is used to seal the gap between one end of the filling pipe and the inner wall surface of the inner opening 21 .

[0190] In addition, an embodiment of the present invention further provides a charging port structure, including a charging base and a door cover structure of any of the above embodiments, wherein the charging base is connected to the internal opening 32 and is used for an external charging gun.

[0191] The sealing ring 8 is used to form a gap between the outer periphery of the charging base and the inner wall surface of the inner opening 21 .

[0192] In addition, an embodiment of the present invention further provides a vehicle, which includes the door cover structure, fuel filler port structure or charging port structure of the above-mentioned embodiment.

[0193] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A door cover structure, It is characterized in that It includes a cover plate, a mouth box and a driving device, wherein the mouth box has an inner opening and an outer opening spaced from each other in the inner and outer directions, and the driving device includes a power mechanism, a first transmission mechanism and a second transmission mechanism; The power mechanism can drive the cover plate to move outward from a closed position closing the external opening to a first preset position through the first transmission mechanism; The power mechanism can also drive the cover plate to translate from the first preset position along a preset direction to a second preset position opening the external opening through the second transmission mechanism.

2. The door cover structure according to claim 1, It is characterized in that It also includes a slide rail mechanism and a sliding mechanism, wherein the slide rail mechanism is connected to the inner side of the cover plate, and the sliding mechanism is fixed on the first transmission mechanism and cooperates with the slide rail mechanism in a sliding manner along the preset direction, so that when the cover plate is translated from the first preset position to the second preset position, the cover plate slides relative to the sliding mechanism along the preset direction.

3. The door cover structure according to claim 1, It is characterized in that The preset direction is a direction parallel to the cover plate.

4. The door cover structure according to claim 3, It is characterized in that The preset direction is a front-to-back direction, an up-down direction, or a left-to-right direction.

5. The door cover structure according to claim 2, It is characterized in that The sliding mechanism comprises a sliding block, a sliding groove is arranged on the inner side of the cover plate, and the sliding block can slide in the sliding groove; or, The sliding mechanism comprises a sliding block, a sliding rail is arranged on the inner side of the cover plate, and the sliding block is sleeved on the sliding rail and can slide along the sliding rail.

6. The door cover structure according to claim 2, It is characterized in that The slide rail mechanism includes a first slide rail, which is fixedly connected to the inner side of the cover plate. A ball is arranged between the first slide rail and the cover plate. A ball hole for accommodating the ball is arranged on the first slide rail. The ball protrudes from the ball hole and is in rolling contact with the sliding mechanism.

7. The door cover structure according to claim 2, It is characterized in that The slide rail mechanism includes a first slide rail and a second slide rail, the first slide rail is fixedly connected to the inner side of the cover plate, a ball is arranged between the first slide rail and the second slide rail, a ball hole for accommodating the ball is arranged on the second slide rail, the ball protrudes from the ball hole and is in rolling contact with the sliding mechanism and the first slide rail.

8. The door cover structure according to claim 2, It is characterized in that The slide rail mechanism includes a first slide rail and a second slide rail, and the sliding mechanism includes a third slide rail and a limit block. The first slide rail is fixedly connected to the inner side of the cover plate, and the third slide rail is fixed on the limit block. A ball is arranged between the first slide rail and the third slide rail, and a ball hole for accommodating the ball is arranged on the second slide rail. The ball protrudes from the ball hole and is in rolling contact with the first slide rail and the third slide rail.

9. The door cover structure according to claim 8, It is characterized in that A guide groove for guiding the movement of the limit block is provided in the concave space of the mouth box, and during the process of the cover plate being translated from the first preset position to the second preset position, the limit block always has a portion accommodated in the guide groove.

10. The door cover structure according to claim 8 or 9, It is characterized in that The second slide rail is flexibly connected to the cover plate.

11. The door cover structure according to claim 10, It is characterized in that The second slide rail is connected to the cover plate via a spring; The first slide rail is provided with a through hole penetrating in the inward and outward directions, one end of the spring is fixed on the second slide rail, and the other end of the spring passes through the through hole and is fixedly connected to the cover plate.

12. The door cover structure according to claim 2, It is characterized in that The first transmission mechanism comprises a first driving rod, a crank, a universal rod and a push rod, the power mechanism has a first output shaft, the first driving rod is coaxially connected to the first output shaft or is integrally formed, one end of the crank is connected to the first driving rod, one end of the universal rod is connected to the other end of the crank by a ball joint, the other end of the universal rod is connected to one end of the push rod by a ball joint, and the other end of the push rod is fixed to the sliding mechanism; the first driving rod is perpendicular to the crank, and the first driving rod is parallel to and spaced from the push rod; The first driving rod rotates to drive the crank to rotate, so as to drive the sliding mechanism and the cover plate to move inward and outward directions through the universal rod.

13. The door cover structure according to claim 12, It is characterized in that The power mechanism is arranged at the rear of the mouth box, the first driving rod passes through the mouth box, and the crank, the universal rod and the push rod are located in the concave space of the mouth box.

14. The door cover structure according to claim 2, It is characterized in that The second transmission mechanism comprises a second driving rod, a power converter, a telescopic rod and a gear. The power mechanism has a second output shaft. One end of the second driving rod is connected to the second output shaft. The other end of the second driving rod is connected to the power converter. The telescopic rod is nested with the power converter. The gear is connected to an end of the telescopic rod away from the power converter. The power converter is used to convert the rotational motion of the second driving rod into the telescopic motion of the telescopic rod. A rack extending along the preset direction and meshing with the gear is provided on the inner side of the cover plate. The second output shaft of the power mechanism rotates to drive the second driving rod to rotate, so as to drive the telescopic rod to be telescoped relative to the power converter through the power converter, so as to match the displacement of the cover plate from the closed position to the first preset position, thereby maintaining the constant meshing of the gear and the rack.

15. The door cover structure according to claim 14, It is characterized in that The power converter comprises an outer cylinder, a rotating shaft and a sliding body, wherein the rotating shaft is arranged in the outer cylinder, the other end of the second driving rod is connected to one end of the rotating shaft, and the other end of the rotating shaft is connected to the sliding body, the telescopic rod is inserted into the outer cylinder, the telescopic rod is a hollow shaft, and a spiral groove spirally coiled along the axial direction of the telescopic rod is arranged on the inner hole wall of the telescopic rod, and the sliding body is slidably arranged in the spiral groove; The second output shaft of the power mechanism rotates to drive the second drive rod, the rotating shaft and the sliding body to rotate, so that the sliding body slides relative to the spiral groove to drive the telescopic rod to extend and retract relative to the outer cylinder.

16. The door cover structure according to claim 14, It is characterized in that The second driving rod, the power converter and the power mechanism are arranged at the rear of the mouth box, the telescopic rod passes through the mouth box, and the gear is located in the concave space of the mouth box.

17. The door cover structure according to claim 2, It is characterized in that The driving device also includes a mounting seat, in which the first transmission mechanism and the second transmission mechanism are arranged, and the mounting seat is located behind the mouth box. The first transmission mechanism has a first power output end, and the second transmission mechanism has a second power output end. The first power output end is connected to the sliding mechanism, and the second power output end is connected to the cover plate.

18. The door cover structure according to claim 17, It is characterized in that The first transmission mechanism comprises a fixed shaft and a first gear shaft, the first gear shaft is a hollow shaft and is sleeved outside the fixed shaft, one end of the fixed shaft extending from the first gear shaft is fixed to the mounting seat; one end of the first gear shaft extending from the mounting seat constitutes the first power output end; The second transmission mechanism comprises a rotating shaft and a second gear shaft, wherein the second gear shaft is a hollow shaft and is sleeved outside the rotating shaft, and one end of the rotating shaft extending out of the second gear shaft is rotatably connected to the mounting seat; The driving device also includes a synchronous gear mechanism arranged in the mounting seat, the power mechanism has a first output shaft, and the rotation of the first output shaft of the power mechanism drives the first gear shaft and the second gear shaft to move in the inner and outer directions through the synchronous gear mechanism.

19. The door cover structure according to claim 18, It is characterized in that The synchronous gear mechanism comprises a first gear, a second gear, a third gear, a fourth gear and a gear shaft, the gear shaft is rotatably connected to the mounting seat, the first gear is connected to the first output shaft of the power mechanism, the second gear, the third gear and the fourth gear are arranged on the gear shaft, and the first gear is meshed with the second gear; A first rack structure extending along its axial direction and meshing with the third gear is disposed on the outer peripheral wall of the first gear shaft, and a second rack structure extending along its axial direction and meshing with the fourth gear is disposed on the outer peripheral wall of the second gear shaft.

20. The door cover structure according to claim 19, It is characterized in that A row of first tooth-shaped holes is arranged on the outer peripheral wall of the first gear shaft along its axial direction, and the row of first tooth-shaped holes constitutes the first rack structure; and / or, A row of second tooth-shaped holes is arranged on the outer peripheral wall of the second gear shaft along its axial direction, and the row of second tooth-shaped holes constitutes the second rack structure.

21. The door cover structure according to claim 18, It is characterized in that A gear constituting the second power output end is disposed at one end of the second gear shaft close to the cover plate, and a rack extending along the preset direction and meshing with the gear is disposed on the inner side of the cover plate; The second transmission mechanism also includes a reversing gear set, the circumferential rotation of the second gear shaft and the rotating shaft is restricted, the power mechanism has a second output shaft, and the rotation of the second output shaft of the power mechanism drives the rotating shaft, the second gear shaft and the gear to rotate together through the reversing gear set.

22. The door cover structure according to claim 21, It is characterized in that The reversing gear set includes a first bevel gear and a second bevel gear, the first bevel gear is connected to the second output shaft of the power mechanism, and the second bevel gear is arranged on the rotating shaft and is orthogonally meshed with the first bevel gear.

23. The door cover structure according to claim 1, It is characterized in that The power mechanism includes a first power source and a second power source; The first power source can drive the cover plate to move outward from a closed position closing the external opening to a first preset position through the first transmission mechanism; The second power source can drive the cover plate to translate from the first preset position along a preset direction to a second preset position opening the external opening through the second transmission mechanism.

24. The door cover structure according to claim 23, It is characterized in that The first power source is a first motor, and the second power source is a second motor.

25. The door cover structure according to claim 1, It is characterized in that The power mechanism is a motor having a first output shaft and a second output shaft.

26. The door cover structure according to claim 2, It is characterized in that The cover plate comprises an outer cover and a reinforcing plate connected to the inner side of the outer cover, and the slide rail mechanism is connected to the inner side of the reinforcing plate.

27. The door cover structure according to claim 26, It is characterized in that The inner edge of the reinforcing plate is provided with a circumferential reinforcing plate lip, and the edge of the external opening is provided with a lip groove. When the cover plate is in the closed position, the reinforcing plate lip is accommodated in the lip groove to seal the gap between the cover plate and the mouth box.

28. The door cover structure according to claim 1, It is characterized in that A sealing ring is pressed into the inner opening.

29. The door cover structure according to claim 1, It is characterized in that The mouth box is provided with an annular flange around the external opening, and a plurality of thinning grooves are provided on the outer side surface of the annular flange, so that the thickness of the annular flange at the thinning grooves is smaller than the thickness at other positions of the annular flange.

30. The door cover structure according to claim 1, It is characterized in that The mouth box is provided with an annular flange surrounding the external opening, and a buffer block is provided on the outer side of the annular flange at a side away from the first transmission mechanism.

31. A fuel filler structure, It is characterized in that It comprises a refueling pipe and a door cover structure as described in any one of claims 1 to 30, one end of the refueling pipe is connected to the internal opening, and the other end of the refueling pipe is used to connect to a fuel tank.

32. A charging port structure, It is characterized in that It comprises a charging base and the door cover structure according to any one of claims 1 to 30, wherein the charging base is connected to the internal opening.

33. A vehicle, It is characterized in that It includes the door cover structure described in any one of claims 1-30, the fuel filler port structure described in claim 31 or the charging port structure described in claim 32.

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