Automatic folding-plate device of roof tent

Abstract

Provided in the present invention is an automatic folding-plate device of a roof tent, the automatic folding-plate device comprising a first bottom frame, a top frame, first scissor-type lifting supports, folding plates, driving devices, pull ropes and torsion springs, wherein the folding plates are rotatably connected to the sides of the first bottom frame; the first scissor-type lifting supports are arranged between the first bottom frame and the top frame; in each first scissor-type lifting support, the upper end of a first scissor arm and the lower end of a second scissor arm are sliding ends located on the same side, and the two sliding ends are slidingly arranged on the top frame and the first bottom frame, respectively; each driving device is connected to at least one of the scissor arms to drive the two scissor arms to rotatably open and close around a cross pivot joint; the torsion springs are arranged between each folding plate and the first bottom frame; and one end of each pull rope is connected to a sliding end, and the other end of same is connected to a folding plate. In the present invention, by means of the cooperation of pull force of the pull ropes and torsion force of the torsion springs, the folding plates are linked to automatically fold and unfold during the lifting and unfolding and folding of a tent, such that the automatic folding-plate device is convenient to use and is time-saving and labor-saving. In addition, the structure of the automatic folding-plate device is simple and stable.

Description

An automatic flip-up device for a rooftop tent Technical Field

[0001] This invention belongs to the field of rooftop tent technology, and specifically relates to an automatic flip-up device for rooftop tents. Background Technology

[0002] In recent years, outdoor camping has gradually become one of the essential recreational activities for people. Self-driving tours are the most popular and convenient way to travel for outdoor camping. People usually bring tents and camping equipment, so the portability of tents is receiving more and more attention from consumers.

[0003] Currently, various types of folding tents with different functions are available on the market. Some are folding tents installed on the roof or rear bed of a vehicle, which can be unfolded vertically when in use. Existing rooftop tents have limited space in the first frame, so a flap is usually installed on the side of the frame. This flap, also called a side panel or bed board, is designed to increase the usable area when the tent is unfolded, and it is usually a folding structure. As disclosed in patent CN218623632U, existing flaps are generally manually operated. After unfolding the tent, the flap is manually flipped to extend to the outside of the frame; before folding the tent, the flap must first be flipped to the top of the frame to fold it down.

[0004] Therefore, existing flaps usually require users to manually rotate them to unfold and fold them. Moreover, the unfolding and folding of the flaps and the unfolding and folding of the tent must be done separately and cannot be completed simultaneously. This operation method is not only time-consuming and laborious, increasing the difficulty for users, but also has a low degree of automation, failing to meet users' needs for a convenient and efficient user experience. Technical issues

[0005] The purpose of this invention is to provide an automatic flap device for a rooftop tent, which automatically unfolds and folds the flap while the tent is raised, lowered, unfolded, and folded. It is convenient to use, saves time and effort, and has a simple and stable structure. Technical solutions

[0006] To achieve the above objectives, the solution of the present invention is: an automatic flip-up device for a rooftop tent, comprising a first base frame, a top frame, a first scissor lift frame, a flip-up plate, a drive device, a pull rope, and a torsion spring;

[0007] A flap is rotatably connected to the side of the first base frame. The flap can be folded over the first base frame or extended to the outside of the first base frame. A first scissor lift frame is provided between the first base frame and the top frame to drive the top frame to descend and cover the flap and the first base frame, or to rise away from the flap and the first base frame.

[0008] The first scissor lift frame comprises a first split fork and a second split fork which are cross-hinged, the lower end of the first split fork and the upper end of the second split fork are fixed ends located at the same side, the upper and lower ends of the first split fork and the second split fork are respectively pivoted to the top frame and the first bottom frame, and the upper end of the first split fork and the lower end of the second split fork are sliding ends located at the same side, the two sliding ends are respectively slidably arranged on the top frame and the first bottom frame, and a driving device is connected to at least one split fork to drive the two split forks to rotate about the cross-hinged portion to open and close.

[0009] A torsion spring is arranged between the flap and the first bottom frame, one end of the pull rope is connected to the sliding end, and the other end is connected to the flap; when the driving device drives the top frame to descend, the sliding end slides to tighten the pull rope, the pull rope pulls the flap to rotate and fold above the first bottom frame; when the driving device drives the top frame to ascend, the sliding end reversely slides to loosen the pull rope, the torsion force of the torsion spring drives the flap to tighten the pull rope while rotating and extending outside the first bottom frame.

[0010] Further, the fixed end is located between the sliding end and the flap, a pulley block is arranged on the fixed end, and the middle part of the pull rope is matched with the pulley block.

[0011] Further, the pulley block comprises a pulley seat, a first pulley and a second pulley, the pulley seat is fixed on the fixed end, the first pulley and the second pulley are arranged in an up-down manner on the pulley seat, the middle part of the pull rope is matched between the first pulley and the second pulley, and one end of the pull rope is flush with the height of the pulley seat.

[0012] Further, one end of the pull rope is connected to the inner side of the lower end of the second split fork, the other end of the pull rope is connected to the middle part of the outer side of the flap, and the pulley block is arranged on the inner side of the lower end of the first split fork.

[0013] Further, the flap is provided with two flaps which are respectively rotatably connected to the left and right side portions of the first bottom frame, the first scissor lift frame is provided with two groups, and the two groups of first scissor lift frames are located at the front and rear sides of the first bottom frame and at different end positions of the front and rear sides.

[0014] [According to the rules 91 correction 20.02.2025] further, it also includes a second chassis and a second scissor lift, the second chassis is arranged below the first chassis, the second chassis is installed on the vehicle, the second chassis and the first chassis are provided with a second scissor lift, the second scissor lift is the same as the first scissor lift, both include cross-hinged first and second prongs, the upper and lower ends of the first and second prongs of the second scissor lift are respectively pivoted on the first and second chassis, and wherein the upper end of the first prong and the lower end of the second prong are also located on the same side of the sliding end, the two sliding ends are respectively arranged on the first and second chassis, and the two prongs rotate around the center hinge; The lower end of the first prong of the first scissor lift and the upper end of the second prong of the second scissor lift are coaxially pivoted and fixedly arranged on the first chassis as a fixed end, and the lower end of the second prong of the first scissor lift and the upper end of the first prong of the second scissor lift are coaxially pivoted and slidably arranged on the first chassis; A first scissor lift and a second scissor lift are provided as a group of scissor lifts, the roof tent is provided with two groups of scissor lifts, and the other group of scissor lifts is symmetrically arranged on the other side of the first chassis.

[0015] Further, the two groups of scissor lifts are arranged at the same end position on the front and rear sides of the first chassis, the flap is provided with two and is respectively rotatably connected with the two sides of the first chassis, and the flap near the side of the scissor lift is connected between the sliding end of one of the first scissor lifts through the first pull rope;

[0016] The flap away from the side of the scissor lift is connected between the sliding end of the other first scissor lift through the second pull rope, and the side of the other first chassis is provided with a third pulley near the position corresponding to the fixed end. One end of the second pull rope is connected with the flap, and the other end of the second pull rope passes through the third pulley and is connected with the sliding end.

[0017] [According to the rules 91 correction 20.02.2025] further, the fixed end of the first scissor lift connected by the first pull rope is provided with a pulley block, and the middle part of the first pull rope is matched with the pulley block; The sliding end of the first scissor lift connected by the second pull rope is provided with a fourth pulley above the second pull rope, and the middle part of the second pull rope is matched with the fourth pulley and the third pulley in turn.

[0018] Further, a synchronous rod is arranged between the two groups of scissor lifts, the two ends of the synchronous rod are respectively fixedly connected with the sliding ends symmetrically arranged on the front and rear sides of the first chassis, and the two groups of scissor lifts are linked and opened and closed through the synchronous rod.

[0019] Further, a plurality of rotating assemblies are arranged at the rotating position of the turning plate and the first base frame, each rotating assembly comprising two L-shaped connectors and a pivot, one end of each L-shaped connector being fixedly connected to the turning plate and the first base frame respectively, the other end of each L-shaped connector being pivotally connected together via the pivot to form a herringbone structure, and the torsion spring being sleeved on the pivot and having two ends fixed to the turning plate and the first base frame respectively. Advantages

[0020] After the above scheme is adopted, the application has the following advantages:

[0021] The torsion spring is arranged between the turning plate and the first base frame, the original state of the torsion spring is the stretched state, so that the turning plate can be kept in the unfolded state extending outside the first base frame, and the sliding end and the turning plate are connected by the pull rope, so that the turning plate and the top frame are linked together, and the linkage process is as follows: when the driving device drives the top frame to descend, the sliding end will slide away from the fixed end until the roof tent is folded, in this process, the sliding end will pull the pull rope tightly, the pull rope will drive the turning plate to rotate until it is folded above the first base frame, at this time, the torsion spring is compressed to store torsion; when the driving device drives the top frame to rise, the sliding end will slide reversely to the fixed end, at this time, the torsion spring releases, and the turning plate is pushed to rotate by the torsion reset of the torsion spring, at this time, the pull rope is pulled tightly by the turning plate, the traction of the pull rope will make the turning plate rotate slowly until it extends outside the first base frame. Thus, the application has the following advantages:

[0022] 1. The structure of the pull rope and the torsion spring is specially designed, which cleverly realizes the synchronous action of driving the turning plate to unfold and fold while the tent is lifted and lowered, when the top frame needs to be raised or lowered, the user only needs to operate one driving device to make the turning plate and the top frame move at the same time, which reduces the complexity of operation and the required time, is convenient to use, saves time and effort, and meets the user's demand for convenient and efficient use experience.

[0023] 2. If the turning plate is manually turned over or directly turned over by the pull rope linkage, the turning plate will immediately rotate to the position and hit the first base frame, resulting in noise and damage to the first base frame and the turning plate, the application matches the traction of the pull rope and the torsion of the torsion spring, the turning plate will slowly rotate to fold and unfold, will not immediately rotate to the position, will not produce noise, and will not easily damage the first base frame and the turning plate, and has a long service life.

[0024] 3. The turning plate and the tent lifting linkage can be realized only by the pull rope and the torsion spring, compared with other designs using complex structures such as connecting rod hinge and rack transmission, the structure of the application is simpler, occupies less space, has low cost, and has good stability of the overall structure, which meets the market demand.

[0025] 4. The original state of the torsion spring can keep the flap in an unfolded state extending outside the first chassis. Without sufficient driving force, the flap will not be easily flipped, which can prevent children or pets from being accidentally clamped between the first chassis and the flap, thereby improving the safety of use.

[0026] 5. The design of the pull rope and the torsion spring also has strong interchangeability and adjustability, which can adapt to the use requirements of tents of different specifications and sizes. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 is a perspective view of a tent in an unfolded state according to an embodiment of the present application;

[0028] Fig. 2 is a partial enlarged view of A in Fig. 1;

[0029] Fig. 3 is a structural schematic view of a pulley seat and a pull rope according to an embodiment of the present application;

[0030] Fig. 4 is a partial enlarged view of B in Fig. 1;

[0031] Fig. 5 is a front view of a tent in an unfolded state according to an embodiment of the present application;

[0032] Fig. 6 is a schematic view of a tent folding process according to an embodiment of the present application;

[0033] Fig. 7 is a schematic view of a tent folding process according to an embodiment of the present application;

[0034] Fig. 8 is a schematic view of a tent folding process according to an embodiment of the present application;

[0035] Fig. 9 is a schematic view of a tent in a completely folded state according to an embodiment of the present application;

[0036] Fig. 10 is a perspective view of a tent in an unfolded state according to another embodiment of the present application;

[0037] Fig. 11 is a perspective view of a tent in an unfolded state according to another embodiment of the present application;

[0038] Fig. 12 is a perspective view of a tent in an unfolded state according to another embodiment of the present application;

[0039] Fig. 13 is a partial enlarged view of C in Fig. 12;

[0040] Fig. 14 is a front view of a tent in an unfolded state according to another embodiment of the present application;

[0041] Fig. 15 is a schematic view of a tent folding process according to another embodiment of the present application;

[0042] Fig. 16 is a schematic view of a tent in a completely folded state according to another embodiment of the present application.

[0043] REFERENCE NUMERALS:

[0044] 1, first chassis; 11, slide rail; 12, second chassis; 2, top frame; 3, first scissor lift frame; 31, first fork; 32, second fork; 33, sliding end; 34, fixed end; 35, second scissor lift frame; 4, pulley block; 41, pulley seat; 42, first pulley; 43, second pulley; 44, third pulley; 45, fourth pulley; 5, flap; 6, driving device; 61, lead screw; 62, motor; 63, lead screw nut; 7, pull rope; 71, first pull rope; 72, second pull rope; 8, torsional spring; 9, rotating assembly; 91, L-shaped connecting piece; 92, pivot; 10, synchronous rod. Best mode of the present application

[0045] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] As shown in FIGS. 1-16, the present application provides an automatic flap device for a roof tent, which comprises a first chassis 1, a top frame 2, a first scissor lift frame 3, a flap 5, a driving device 6, a pull rope 7 and a torsional spring 8.

[0047] Referring to FIGS. 1 and 2, the flap 5 is rotatably connected to the side of the first chassis 1, and a plurality of rotating assemblies 9 are arranged at the rotation position of the flap 5 and the first chassis 1. Each rotating assembly 9 preferably comprises two L-shaped connecting pieces 91 and a pivot 92. One end of each L-shaped connecting piece 91 is fixed to the flap 5 and the first chassis 1, respectively, and the other end of each L-shaped connecting piece 91 is pivotally connected to the other L-shaped connecting piece 91 via the pivot 92, forming a herringbone structure. This structure is simple and light, and the flap 5 is easier to rotate and will not jam. The flap 5 can be folded above the first chassis 1 or extended outside the first chassis 1. In addition, the torsional spring 8 can be sleeved on the pivot 92, and the two ends of the torsional spring 8 are fixed to the flap 5 and the first chassis 1, respectively. The original state of the torsional spring 8 is the stretched state, so that the flap 5 can be kept in the unfolded state extending outside the first chassis 1. Without sufficient driving force, the flap 5 will not easily turn over. This design can prevent children or pets from being accidentally pinched between the first chassis 1 and the flap 5, thereby improving the safety of use.

[0048] The first chassis 1 and the top frame 2 are provided with a first scissor lifting frame 3 to drive the top frame 2 to descend and cover the turning plate 5 and the first chassis 1, or to ascend and move away from the turning plate 5 and the first chassis 1. Specifically, the first scissor lifting frame 3 comprises a first branch 31 and a second branch 32 which are crossly hinged in the middle, the upper and lower ends of the first branch 31 and the second branch 32 are respectively pivotally connected to the top frame 2 and the first chassis 1, and the upper end of the first branch 31 and the lower end of the second branch 32 are sliding ends 33 which are located on the same side and are respectively slidably arranged on the top frame 2 and the first chassis 1, i.e. the two sliding ends 33 are symmetrically arranged in up and down directions; the lower end of the first branch 31 and the upper end of the second branch 32 are fixed ends 34 which are located on the same side and are also symmetrically arranged in up and down directions. Among them, the upper end of the first branch 31 refers to the part between the upper end face of the first branch 31 and the cross hinge, the lower end of the first branch 31 refers to the part between the lower end face of the first branch 31 and the cross hinge, and the upper and lower ends of the second branch 32 are the same. The driving device 6 is connected to at least one branch to drive the two branches to rotate around the cross hinge to open and close. Specifically, as shown in FIGS. 6-9, when the sliding end 33 slides away from the fixed end 34 on the same first chassis 1 or top frame 2, the first branch 31 and the second branch 32 rotate, the upper end of the first branch 31 moves downward to approach the lower end of the second branch 32, and the upper end of the second branch 32 moves downward to approach the lower end of the first branch 31, thereby driving the top frame 2 to descend to completely cover the first chassis 1 and the turning plate 5; conversely, when the sliding end 33 slides to approach the fixed end 34 on the same first chassis 1 or top frame 2, the first branch 31 and the second branch 32 rotate reversely to reset, thereby driving the top frame 2 to ascend to unfold.

[0049] The focus of the present application is the pull rope 7 and the torsional spring 8. The torsional spring 8 is arranged between the turning plate 5 and the first chassis 1, and can be sleeved on the pivot 92 as mentioned above. One end of the pull rope 7 is connected to the sliding end 33, and the other end is connected to the turning plate 5. The fixed end 34 is located between the sliding end 33 and the turning plate 5. The present application realizes the lifting linkage of the turning plate 5 and the top frame 2 through the cooperation of the pull rope 7 and the torsional spring 8. Specifically, the linkage process is as follows:

[0050] As shown in FIGS. 6-9, when the driving device 6 drives the top frame 2 to descend, the sliding end 33 slides away from the fixed end 34 on the same first chassis 1 or top frame 2, i.e. the sliding end 33 moves in a direction away from the turning plate 5, until the roof tent is folded. In this process, the sliding end will pull the pull rope 7 tightly, the pull rope 7 will drive the turning plate 5 to rotate, until the turning plate 5 is folded above the first chassis 1. At this time, the torsional spring 8 is compressed and stores torsional force. When the driving device 6 drives the top frame 2 to ascend, the sliding end 33 will slide reversely, thereby gradually approaching the turning plate 5. At this time, the torsional spring 8 is released, and the turning plate 5 is driven to rotate through the torsional reset of the torsional spring 8. The pull rope 7 is pulled tightly by the turning plate 5. The traction of the pull rope 7 will make the turning plate 5 rotate slowly, until the turning plate 5 extends outside the first chassis 1.

[0051] Therefore, the present application is particularly designed to structure the pull rope 7 and the torsion spring 8, and the synchronization of the tent lifting and the unfolding and folding of the flap 5 is achieved. When the top frame 2 needs to be raised or lowered, the user only needs to operate one driving device 6 to make the flap 5 and the top frame 2 move simultaneously, which reduces the complexity of operation and the required time, is convenient to use, saves time and effort, meets the user's demand for convenient and efficient use experience. Moreover, compared with other designs with complex structures such as link hinge and rack transmission, the structure of the present application is simpler, occupies less space, has low cost, and has good stability of the overall structure, which meets the market demand.

[0052] As a preferred solution, as shown in FIGS. 2 and 3, a pulley block 4 is arranged on the fixed end 34 between the sliding end 33 and the flap 5, and the middle part of the pull rope 7 cooperates with the pulley block 4. The pull rope 7 is preferably a steel wire rope, and the cooperation between the steel wire rope and the pulley block 4 forms a steel wire rope pulley mechanism, which has small friction coefficient and stable power transmission, and is beneficial to improve the stability and reliability of the entire linkage structure.

[0053] Further, as shown in FIG. 3, the pulley block 4 can be provided with only one pulley cooperating with the pull rope 7, or can be provided with two pulleys cooperating with the pull rope 7, and two pulleys are preferably provided. The pulley block 4 includes a pulley seat 41, a first pulley 42 and a second pulley 43. The pulley seat 41 is fixed on the fixed end 34, and the first pulley 42 and the second pulley 43 are arranged on the pulley seat 41 in an up-down manner. The middle part of the pull rope 7 is cooperated between the first pulley 42 and the second pulley 43. During the rotation of the flap 5, the stress direction of the pull rope 7 will change, and the arrangement of two pulleys can make the pull rope 7 always slide with the pulleys.

[0054] Specifically, one end of the pull rope 7 is connected to the inner side of the lower end of the second fork 32, the other end of the pull rope 7 is connected to the middle part of the outer side of the flap 5, and the pulley block 4 is arranged on the inner side of the lower end of the first fork 31. This arrangement makes the pulley seat 41 and the pull rope 7 be stored in the tent when the tent is folded, and the two ends and the middle part of the pull rope 7 are located on the same vertical plane, which reduces the friction between the pull rope 7 and the first pulley 42 or the second pulley 43. In addition, the two ends of the pull rope 7 can be fixed by bolts, screws or other fixing members.

[0055] The one end of the pull rope 7 is preferably fixed at a middle position between the cross joint of the lower end surface of the second fork 32, that is, the middle lower part of the second fork 32, so that the pull rope 7 has a distance with the first base frame 1, the middle part of the pull rope 7 is flush with the height of the one end of the pull rope 7, that is, the position of the pulley seat 41 is flush with the position of the one end of the pull rope 7, and the other end of the pull rope 7 is connected with the outer side part of the flap 5. The setting makes the flap 5 have an included angle with the pull rope 7 when the flap 5 is unfolded, the flap 5 is more easily pulled, and the pull rope 7, the flap 5 and the fixed end 34 form a triangular structure, the triangular structure has stability, and the whole linkage structure is more stable and reliable.

[0056] With reference to Fig. 1, the number of the first scissor lift frame 3 and the flap 5 can be set according to the need, the first scissor lift frame 3 is preferably set as two groups, and the two groups of the first scissor lift frame 3 are respectively arranged at the left and right sides of the top frame 2 and the first base frame 1, so that the tent lifting is more stable. The number of the flap 5 is also preferably set as two, and the two flaps 5 are respectively rotationally connected with the two side parts of the first base frame 1. In order to make the two flaps 5 be able to be linked with the top frame 2, the two groups of the first scissor lift frame are located at different end positions of the front and rear sides of the first base frame 1, for example, are respectively located at the front left end and the rear right end of the first base frame 1, so that the two groups of the first scissor lift frame 3 are staggered and not arranged at the same end side of the first base frame 1, thereby being able to be matched with the two flaps 5 respectively, and the pull rope 7 and the torsional spring 8 also need to be matched and set as two groups.

[0057] With reference to Figs. 1 and 4, the front and rear sides of the first base frame 1 and the top frame 2 are respectively provided with sliding rails 11 extending along the length direction, the sliding ends 33 of the forks are slidingly matched in the sliding rails 11, and the fixed ends 34 of the forks are located at one end of the sliding rails 11. The sliding ends slide in the sliding rails 11 through the driving device 6. Specifically, the driving device 6 can be an electric push rod or a screw nut transmission mechanism, and the present application is preferably a screw nut transmission mechanism. The driving device 6 includes a screw rod 61, a motor 62 and a screw nut 63. The screw rod 61 and the motor 62 are arranged in the sliding rail 11. The end of the screw rod 61 is connected with the motor 62 to make the screw rod 61 rotate. The screw nut 63 is matched on the screw rod 61 to slide along the screw rod 61. The sliding end 33 of the fork is pivoted on the screw nut 63. In use, the motor 62 is started to drive the screw rod 61 to rotate. The screw nut 63 on the screw rod 61 moves along the screw rod 61 to drive the sliding end 33 on the screw nut 63 to move along the screw rod 61 and rotate around the pivot, thereby realizing the automatic opening and closing of the two forks, and further realizing the automatic covering and moving away of the top frame 2 relative to the first base frame 1. In addition, the driving device 6 can be arranged only on the sliding rail 11 of the first base frame 1, the lower end of the second fork 32 is pivoted with the screw nut 63, and the sliding rail 11 of the top frame 2 can not be provided with the driving device 6. A roller (not shown in the figure) is arranged at the upper end of the first fork 31, and the roller is slidingly matched with the sliding rail 11 of the top frame 2.

[0058] In another embodiment, with reference to FIGS. 10-16, the roof tent can be a double-layer structure, and the roof tent is further provided with a second chassis 12 and a second scissor lifting frame 35, the second chassis 12 is arranged below the first chassis 1, the second chassis 12 is mounted on the vehicle, and the second scissor lifting frame 35 is arranged between the second chassis 12 and the first chassis 1, the second scissor lifting frame 35 has the same structure as the first scissor lifting frame 3, and both include first and second split forks 31 and 32 that are cross-hinged, the upper and lower ends of the first and second split forks 31 and 32 of the second scissor lifting frame 35 are respectively pivoted to the first chassis 1 and the second chassis 12, and the upper end of the first split fork 31 and the lower end of the second split fork 32 are also sliding ends 33 on the same side, the two sliding ends 33 are respectively slidably arranged on the first chassis 1 and the second chassis 12, and the two split forks rotate about the central hinge to open and close; the lower end of the first split fork 31 of the first scissor lifting frame 3 and the upper end of the second split fork 32 of the second scissor lifting frame 35 are coaxially pivoted and fixedly arranged on the first chassis 1 as fixed ends 34, and the lower end of the second split fork 32 of the first scissor lifting frame 3 and the upper end of the first split fork 31 of the second scissor lifting frame 35 are coaxially pivoted and slidably arranged on the first chassis 1 as sliding ends 33.

[0059] [Corrected according to Rule 91 on 20.02.2025] A first scissor lifting frame 3 and a second scissor lifting frame 35 are provided as a group of scissor lifting frames, the roof tent is provided with two groups of scissor lifting frames, and the flap 5 is correspondingly provided with two, which are respectively rotatably connected to the left and right sides of the first chassis 1 without scissor lifting frames, the two groups of scissor lifting frames are staggered and not arranged on the same end side of the first chassis 1, and the pulling rope connection between the flap 5 and the fixed end 34 is the same as in the previous embodiment.

[0060] However, in order to make the double-layer roof tent more stable during lifting, the two groups of scissor lifting frames can be arranged symmetrically, and the other group of scissor lifting frames is arranged symmetrically on the other side of the first chassis 1, and the two groups of scissor lifting frames are arranged at the same end position on the front and rear sides of the first chassis 1, for example, at the left or right end position on the front and rear sides, as shown in FIG. 8, a synchronization rod 10 can be arranged between the two groups of scissor lifting frames, the two ends of the synchronization rod 10 are respectively fixedly connected to the sliding ends 33 on the front and rear sides of the first chassis 1 symmetrically, the two groups of scissor lifting frames are linked and opened and closed through the synchronization rod 10, and one driving device 6 can drive the tent to lift. In this structure, one flap 5 is closer to the scissor lifting frame, and the other flap 5 is farther away from the scissor lifting frame, and the two flaps 5 are respectively connected to the two groups of scissor lifting frames to be linked, but the connection method is slightly different, as follows:

[0061] Referring to Figs. 11-13, the flap 5 near one side of the scissors-type lifting frame is connected with the sliding end 33 of one of the first scissors-type lifting frames 3 through a first pull rope 71, and the connection structure is the same as the previous embodiment. The fixed end 34 of the first scissors-type lifting frame 3 is located between the movable end and the flap 5. When the top frame 2 is raised, the sliding end 33 is away from the flap 5, and the first pull rope 71 is pulled tight to pull the flap 5.

[0062] The flap 5 away from one side of the scissors-type lifting frame is connected with the sliding end 33 of the other first scissors-type lifting frame 3 through a second pull rope 72. At this time, the sliding end 33 is located between the fixed end 34 and the flap 5. A third pulley 44 can be provided near the fixed end 34 on the side edge of the other first base frame 1. One end of the second pull rope 72 is connected with the flap 5, and the other end of the second pull rope 72 is connected with the sliding end 33 by passing through the third pulley 44. The third pulley 44 can change the direction of the pulling force of the second pull rope 72, so that when the top frame 2 is lowered and the sliding end 33 slides to be close to the flap 5, the second pull rope 72 can also be pulled tight to pull the flap 5 to be folded above the first base frame 1. When the top frame 2 is raised, the flap 5 is also rotated and unfolded by the torsional force of the torsional spring 8.

[0063] Further, the same as the previous embodiment, a pulley block 4 can be provided on the fixed end 34 of the first scissors-type lifting frame 3 connected with the first pull rope 71. The middle part of the first pull rope 71 cooperates with the pulley block 4, and the cooperation between the first pull rope 71 and the pulley block 4 forms a steel wire rope pulley mechanism, which is beneficial to improve the stability and reliability of the entire linkage structure. The position of the pulley seat 41 is also flush with the position of one end of the first pull rope 71, and the other end of the first pull rope 71 is connected with the outer side of the flap 5, so that the linkage structure is more stable and reliable.

[0064] The sliding end 33 of the first scissors-type lifting frame 3 connected with the second pull rope 72 is provided with a fourth pulley 45 above the second pull rope 72. The middle part of the second pull rope 72 cooperates with the fourth pulley 45 and the third pulley 44 in sequence. The fourth pulley 45 can make the second pull rope 72 and the flap 5 have an included angle, which is easier to pull the flap 5. The second pull rope 72, the flap 5 and the second base frame 12 form a triangular structure, which also makes the linkage structure more stable and reliable.

[0065] The above description is only the preferred embodiment of the present application, and is not a limitation on the design of the present application. Any equivalent changes made on the basis of the key design of the present application shall fall within the scope of protection of the present application.

Claims

1. An automatic roll-up device for a roof tent, characterized by: The utility model provides a folding stroller, comprising a first chassis, a top frame, a first scissor lift, a flap, a driving device, a pull rope and a torsion spring. The flap is rotatably connected to the side of the first chassis and is folded over the first chassis or extended outside the first chassis. The first scissor lift comprises a first fork and a second fork which are crossly hinged, the lower end of the first fork and the upper end of the second fork are fixed ends on the same side, the upper and lower ends of the first fork and the second fork are pivotally connected to the top frame and the first chassis respectively, the upper end of the first fork and the lower end of the second fork are sliding ends on the same side, and the two sliding ends are slidingly arranged on the top frame and the first chassis respectively. The driving device is connected to at least one fork to drive the two forks to rotate around the cross hinge. The pull rope is connected to the sliding end at one end and to the flap at the other end.

2. An automatic roof tent flap device as claimed in claim 1, characterized in that: When the driving device drives the top frame to descend, the sliding end slides to tighten the pull rope, the pull rope pulls the flap to make the flap rotate and fold over the first chassis; when the driving device drives the top frame to ascend, the sliding end slides reversely to loosen the pull rope, the torsion force of the torsion spring drives the flap to tighten the pull rope and makes the flap rotate and extend outside the first chassis.

3. An automatic roof tent flap device as claimed in claim 2, characterized in that: The fixed end is located between the sliding end and the flap, and a pulley block is arranged on the fixed end.

4. A device for automatically folding a roof tent according to claim 2 or 3, characterized in that: The pulley block comprises a pulley seat, a first pulley and a second pulley, the pulley seat is fixed on the fixed end, the first pulley and the second pulley are arranged on the pulley seat in an up-down manner, the middle part of the pull rope is fitted between the first pulley and the second pulley, and one end of the pull rope is flush with the height of the pulley seat.

5. An automatic roof tent flap device as claimed in claim 2, characterized in that: One end of the pull rope is connected to the inner side of the lower end of the second fork, the other end of the pull rope is connected to the middle part of the outer side of the flap, and the pulley block is arranged on the inner side of the lower end of the first fork. The flap is provided with two flaps which are rotatably connected to the left and right sides of the first chassis respectively, the first scissor lift is provided with two groups, and the two groups of the first scissor lift are located at the front and rear sides of the first chassis and at different end positions of the front and rear sides.

6. [Amended according to Rule 91 on 20.02.2025] An automatic roll-up device for a roof tent as defined in claim 1, characterized in that: The second base frame is arranged below the first base frame and is mounted on the vehicle, and a second scissor lifting frame is arranged between the second base frame and the first base frame, and the second scissor lifting frame has the same structure as the first scissor lifting frame and comprises first and second split forks that are cross-hinged, the upper and lower ends of the first and second split forks of the second scissor lifting frame are pivotally connected to the first and second base frames respectively, and the upper end of the first split fork and the lower end of the second split fork are sliding ends located on the same side, the two sliding ends are slidingly arranged on the first and second base frames respectively, and the two split forks rotate about the central hinge to open and close; the lower end of the first split fork of the first scissor lifting frame and the upper end of the second split fork of the second scissor lifting frame are coaxially pivotally connected and fixed to the first base frame as fixed ends, and the lower end of the second split fork of the first scissor lifting frame and the upper end of the first split fork of the second scissor lifting frame are coaxially pivotally connected and slidingly arranged on the first base frame as sliding ends; one first scissor lifting frame and one second scissor lifting frame form a group of scissor lifting frames, the roof tent is provided with two groups of scissor lifting frames, and the other group of scissor lifting frames is symmetrically arranged on the other side of the first base frame.

7. An automatic roof tent flap device as claimed in claim 6, characterized in that: The two groups of scissor lifting frames are arranged at the same end positions on the front and rear sides of the first base frame, the two flaps are rotatably connected to the two sides of the first base frame respectively, the flap close to one side of the scissor lifting frame is connected to the sliding end of one first scissor lifting frame through a first pull rope; the flap away from the scissor lifting frame is connected to the sliding end of the other first scissor lifting frame through a second pull rope, the side edge of the other first base frame is provided with a third pulley near the position corresponding to the fixed end, one end of the second pull rope is connected to the flap, and the other end of the second pull rope passes around the third pulley and is connected to the sliding end.

8. An automatic roll-up device for a roof tent as defined in claim 7, characterized in that: The fixed end of the first scissor lifting frame connected by the first pull rope is provided with a pulley block, and the middle part of the first pull rope is matched with the pulley block; the sliding end of the first scissor lifting frame connected by the second pull rope is provided with a fourth pulley above the second pull rope, and the middle part of the second pull rope is matched with the fourth pulley and the third pulley in sequence.

9. An automatic roof tent flap device as claimed in claim 7, characterized in that: A synchronous rod is arranged between the two groups of scissor lifting frames, the two ends of the synchronous rod are fixedly connected to the sliding ends symmetrically arranged on the front and rear sides of the first base frame, and the two groups of scissor lifting frames are linked and opened and closed through the synchronous rod.

10. An automatic roof tent flap device as claimed in claim 1, characterized in that: A plurality of rotating assemblies are arranged at the rotating positions of the flap and the first base frame, each rotating assembly comprises two L-shaped connecting pieces and a pivot, one end of each L-shaped connecting piece is fixedly connected to the flap and the first base frame respectively, the other end of each L-shaped connecting piece is pivotally connected together through the pivot to form a herringbone structure, and a torsional spring is sleeved on the pivot and has two ends fixed to the flap and the first base frame respectively.

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