Automatic plate turning device of car roof tent

Abstract

The utility model provides an automatic turning plate device of a car roof tent. The automatic turning plate device comprises a first bottom frame, a top frame, a first shear fork type lifting frame, a turning plate, a driving device, a pull rope and a torsional spring. The side portion of the first bottom frame is rotationally connected with a turning plate, a first shear fork type lifting frame is arranged between the first bottom frame and the top frame, the upper end of a first fork and the lower end of a second fork in the first shear fork type lifting frame are sliding ends located on the same side, and the two sliding ends are arranged on the top frame and the first bottom frame in a sliding mode respectively. The driving device is connected to at least one fork so as to drive the two forks to rotate, open and close around the crossed hinged position; a torsional spring is arranged between the turning plate and the first bottom frame, one end of the pull rope is connected with the sliding end, and the other end of the pull rope is connected with the turning plate. Through the cooperation of the traction force of the pull rope and the torsion force of the torsion spring, when the tent is lifted to be unfolded and folded, the turning plate is linked to be automatically unfolded and folded, the use is convenient, time and labor are saved, and the structure is simple and stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of roof tents, and particularly relates to an automatic flipping device for a roof tent. Background Art

[0002] In recent years, camping in the wild has gradually become one of people's indispensable entertainment activities, and self-driving tours are the most popular and convenient way for people to camp in the wild. People usually carry tents and camping supplies, so the portability of tents has attracted more and more attention from consumers.

[0003] There are some folding tents with different functions on the market today. Some are folding tents installed on the roof or on the back of a vehicle. When in use, they only need to be unfolded vertically upwards. The first frame of the existing roof tent has limited space, and a flap is generally provided on the side of the frame. The flap, also called a side panel or a bed panel, is to increase the use area of ​​the tent when it is unfolded, and the form is mostly a folding structure. As disclosed in patent CN218623632U, the existing flap is generally flipped manually. After unfolding the tent, the flap is manually flipped to extend outside the frame to unfold it; before folding the tent, the flap must first be flipped to the top of the frame to fold it.

[0004] Therefore, the existing flap usually requires the user to manually turn it to unfold and fold, and the unfolding and folding actions of the flap and the unfolding and folding actions of the tent need to be performed separately and cannot be completed at the same time. This operation method is not only time-consuming and labor-intensive, increasing the difficulty of use for users, but also has a low degree of automation and cannot meet users' needs for convenient and efficient user experience. Utility Model Content

[0005] The utility model aims to provide an automatic flap device for a roof tent, which can automatically unfold and fold the flap when the tent is lifted, unfolded and folded, is easy to use, saves time and effort, and has a simple and stable structure.

[0006] To achieve the above-mentioned purpose, the solution of the utility model is: an automatic flap device for a roof tent, comprising a first bottom frame, a top frame, a first scissor-type lifting frame, a flap, a driving device, a pull rope and a torsion spring;

[0007] The side of the first bottom frame is rotatably connected with a flap, and the flap is rotatably folded above the first bottom frame or rotatably extended outside the first bottom frame; a first scissor-type lifting frame is arranged between the first bottom frame and the top frame to drive the top frame to descend to cover the flap and the first bottom frame, or to ascend to move away from the flap and the first bottom frame;

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

[0009] A torsion spring is arranged between the flap and the first base 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, and the pull rope pulls the flap to make the flap rotate and fold above the first base frame; when the driving device drives the top frame to rise, the sliding end slides in the opposite direction to loosen the pull rope, and the torsion of the torsion spring drives the flap to tighten the pull rope while making the flap rotate and extend to the outside of the first base frame.

[0010] Furthermore, the fixed end is located between the sliding end and the flap, a pulley block is provided on the fixed end, and the middle portion of the pull rope cooperates with the pulley block.

[0011] Furthermore, the pulley block includes a pulley seat, a first pulley and a second pulley, the pulley seat is fixed on a fixed end, the first pulley and the second pulley are arranged vertically on the pulley seat, 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.

[0012] Furthermore, one end of the pull rope is connected to the inner side of the lower end of the second fork, and 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.

[0013] Furthermore, there are two flaps, which are rotatably connected to the left and right sides of the first base frame respectively. There are two groups of the first scissor-type lifting frames, which are located on the front and rear sides of the first base frame and at different end positions on the front and rear sides.

[0014] Furthermore, it also includes a second chassis and a second scissor-type lifting frame, the second chassis is arranged below the first chassis, the second chassis is installed on the vehicle, the second scissor-type lifting frame is arranged between the second chassis and the first chassis, the second scissor-type lifting frame has the same structure as the first scissor-type lifting frame, both of which include a cross-hinged first fork and a second fork, the upper and lower ends of the first fork and the second fork of the second scissor-type lifting frame are respectively pivotally connected to the first chassis and the second chassis, and the upper end of the first fork and the lower end of the second fork are also sliding ends located on the same side, and the two sliding ends are respectively slidably arranged on the first chassis and On the second chassis, two forks rotate around the central hinge to open and close; the lower end of the first fork of the first scissor-type lifting frame and the upper end of the second fork of the second scissor-type lifting frame are coaxially pivoted and fixedly arranged on the first chassis as fixed ends, and the lower end of the second fork of the first scissor-type lifting frame and the upper end of the first fork of the second scissor-type lifting frame are coaxially pivoted and slidably arranged on the first chassis; a first scissor-type lifting frame and a second scissor-type lifting frame are set as a group of scissor-type lifting frames, the roof tent is provided with two groups of scissor-type lifting frames, and the other group of scissor-type lifting frames is symmetrically arranged on the other side of the first chassis.

[0015] Furthermore, two groups of scissor-type lifting frames are arranged at the same end position on both sides of the first base frame, and two flaps are provided and are rotatably connected to both sides of the first base frame respectively. The flap close to one side of the scissor-type lifting frame is connected to the sliding end of one of the first scissor-type lifting frames through a first pull rope.

[0016] The flap away from one side of the scissor-type lifting frame is connected to the sliding end of the other first scissor-type lifting frame through a second pull rope, and a third pulley is provided on the side of the other first base frame at a position near the corresponding 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.

[0017] Furthermore, a pulley block is provided on the fixed end of the first scissor-type lifting frame connected to the first pull rope, and the middle part of the first pull rope cooperates with the pulley block; a fourth pulley is provided above the pull rope at the sliding end of the first scissor-type lifting frame connected to the second pull rope, and the middle part of the second pull rope cooperates with the fourth pulley and the third pulley in sequence.

[0018] Furthermore, a synchronization rod is provided between the two groups of scissor-type lifting frames, and both ends of the synchronization rod are fixedly connected to the sliding ends symmetrically located at the front and rear sides of the first base frame, respectively, and the two groups of scissor-type lifting frames are linked to open and close via the synchronization rod.

[0019] Furthermore, a plurality of rotating components are arranged at the rotating point between the flap and the first base frame, and each rotating component includes two L-shaped connecting members and a pivot, one end of the two L-shaped connecting members are respectively fixed to the flap and the first base frame, and the other ends of the two L-shaped connecting members are pivotally connected together through a pivot to form a herringbone structure, the torsion spring is sleeved on the pivot, and the two ends of the torsion spring are respectively fixed to the flap and the first base frame.

[0020] After adopting the above scheme, the beneficial effects of the utility model are:

[0021] The utility model sets a torsion spring between the flap and the first base frame. The original state of the torsion spring is a stretched state so that the flap can be maintained in an expanded state extending outside the first base frame, and a pull rope is used to connect the sliding end and the flap, so that the flap and the top frame are linked together. 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. During this process, the sliding end will tighten the pull rope, and the pull rope will drive the flap to rotate until it is folded above the first base frame. At this time, the torsion spring is compressed and stores torque; when the driving device drives the top frame to rise, the sliding end will slide in the opposite direction to close to the fixed end. At this time, the torsion spring is released, and the torsion reset of the torsion spring pushes the flap to rotate. At this time, the pull rope is tightened by the flap, and the traction force of the pull rope will cause the flap to rotate slowly until it extends to the outside of the first base frame. Therefore, the utility model has the following advantages:

[0022] 1. The utility model specially designs the structure of the pull rope and the torsion spring, which ingeniously realizes the synchronous action of the tent being raised and lowered while driving the flap to unfold and fold. When the top frame needs to be raised or lowered, the user only needs to operate a driving device to make the flap and the top frame move at the same time, which reduces the complexity and time required for the operation, is easy to use, saves time and effort, and meets the user's needs for a convenient and efficient use experience.

[0023] 2. If manual flipping or direct flipping by pull rope linkage is adopted, the flap will immediately rotate into place and hit the first base frame, causing noise and damage to the first base frame and the flap. The utility model combines the traction force of the pull rope with the torsion force of the torsion spring, and the flap will slowly rotate to fold and unfold. It will not rotate into place immediately, will not generate noise, and will not easily damage the first base frame and the flap, and has a long service life.

[0024] 3. The utility model only uses a pull rope and a torsion spring to make the flap and the tent rise and fall in linkage. Compared with other designs that use complex structures such as connecting rod hinges and rack transmissions, the utility model has a simpler structure, occupies less space, has a low cost, and has good overall structural stability, which meets market demand.

[0025] 4. The original state of the torsion spring can keep the flap in the expanded state extending outside the first base frame. Without sufficient driving force, the flap will not flip easily. This design can prevent children or pets from being accidentally caught between the first base frame and the flap, thereby improving safety in use.

[0026] 5. The design of the pull rope and torsion spring is also highly interchangeable and adjustable, and can adapt to the use requirements of tents of different specifications and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional diagram of a tent in an unfolded state according to an embodiment of the utility model;

[0028] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0029] Figure 3 This is a schematic diagram of the structure of the pulley seat and the pull rope in cooperation with each other in one embodiment of the utility model;

[0030] Figure 4 for Figure 1 A partial enlarged view of point B in the middle;

[0031] Figure 5 This is a front view of a tent in an unfolded state according to an embodiment of the utility model;

[0032] Figure 6 Schematic diagram of the folding process of a tent in one embodiment of the utility model Figure 1 ;

[0033] Figure 7 Schematic diagram of the folding process of a tent in one embodiment of the utility model Figure 2 ;

[0034] Figure 8 Schematic diagram of the folding process of a tent in one embodiment of the utility model Figure 3 ;

[0035] Fig. 9 This is a schematic diagram of a tent in a fully folded state according to an embodiment of the utility model;

[0036] Fig.10 Another embodiment of the present invention is a three-dimensional tent in an unfolded state. Figure 1 ;

[0037] Fig.11 Another embodiment of the present invention is a three-dimensional tent in an unfolded state. Figure 2 ;

[0038] Fig.12 Another embodiment of the present invention is a three-dimensional tent in an unfolded state. Figure 3 ;

[0039] Fig.13 for Fig.12 A partial enlarged view of point C in the middle;

[0040] Fig.14 This is a front view of another embodiment of the tent of the utility model in an unfolded state;

[0041] Fig.15 A schematic diagram of the folding process of a tent according to another embodiment of the present invention;

[0042] Fig.16 This is a schematic diagram of a tent in another embodiment of the present invention in a fully folded state.

[0043] Description of labels:

[0044] 1. First base frame; 11. Slide rail; 12. Second base frame; 2. Top frame; 3. First scissor-type lifting frame; 31. First fork; 32. Second fork; 33. Sliding end; 34. Fixed end; 35. Second scissor-type lifting 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. Screw; 62. Motor; 63. Screw nut; 7. Pull rope; 71. First pull rope; 72. Second pull rope; 8. Torsion spring; 9. Rotating assembly; 91. L-shaped connector; 92. Pivot; 10. Synchronous rod. DETAILED DESCRIPTION

[0045] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] like Figure 1-16 As shown, the utility model provides an automatic flap device for a roof tent, comprising a first bottom frame 1, a top frame 2, a first scissor-type lifting frame 3, a flap 5, a driving device 6, a pull rope 7 and a torsion spring 8.

[0047] Key reference 1 and Figure 2The side of the first chassis 1 is rotatably connected with a flap 5, and a plurality of rotating components 9 are arranged at the rotation point between the flap 5 and the first chassis 1, and each rotating component 9 preferably includes two L-shaped connecting members 91 and a pivot 92, one end of the two L-shaped connecting members 91 is respectively fixed to the flap 5 and the first chassis 1, and the other end of the two L-shaped connecting members 91 is pivotally connected together through the pivot 92 to form a herringbone structure, which is simple and light, and the flap 5 is easier to rotate and will not get stuck. The flap 5 can be specifically rotatably folded above the first chassis 1 or rotatably extended to the outside of the first chassis 1. In addition, the torsion spring 8 can be sleeved on the pivot 92, and the two ends of the torsion spring 8 are respectively fixed to the flap 5 and the first chassis 1. The original state of the torsion spring 8 is a stretched state so that the flap 5 can be maintained in an expanded state extending to the outside of the first chassis 1. Without sufficient driving force, the flap 5 will not easily flip. This design can prevent children or pets from being accidentally caught between the first chassis 1 and the flap 5, thereby improving the safety of use.

[0048] A first scissor-type lifting frame 3 is arranged between the first bottom frame 1 and the top frame 2 to drive the top frame 2 to descend to cover the flap 5 and the first bottom frame 1, or to ascend to move away from the flap 5 and the first bottom frame 1. Specifically, the first scissor-type lifting frame 3 comprises a first fork 31 and a second fork 32 which are cross-hinged in the middle, and the upper and lower ends of the first fork 31 and the second fork 32 are respectively pivotally connected to the top frame 2 and the first bottom frame 1, and the upper end of the first fork 31 and the lower end of the second fork 32 are sliding ends 33 located on the same side, and the two sliding ends 33 are respectively slidably arranged on the top frame 2 and the first bottom frame 1, that is, the two sliding ends 33 are symmetrically arranged up and down; the lower end of the first fork 31 and the upper end of the second fork 32 are fixed ends 34 located on the same side, and the two fixed ends 34 are also symmetrically arranged up and down. The upper end of the first fork 31 refers to the portion between the upper end surface of the first fork 31 and the cross hinge, the lower end of the first fork 31 refers to the portion between the lower end surface of the first fork 31 and the cross hinge, and the upper and lower ends of the second fork 32 are similar. The driving device 6 is connected to at least one fork to drive the two forks to rotate around the cross hinge to open and close. Specifically, Figure 6-9 As shown, when the sliding end 33 slides away from the fixed end 34 on the first base frame 1 or the top frame 2, the first fork 31 and the second fork 32 rotate, and the upper end of the first fork 31 moves downwardly toward the lower end of the second fork 32, and the upper end of the second fork 32 moves downwardly toward the lower end of the first fork 31, thereby driving the top frame 2 to descend until it completely covers the first base frame 1 and the flap 5; conversely, when the sliding end 33 slides close to the fixed end 34 on the first base frame 1 or the top frame 2, the first fork 31 and the second fork 32 rotate in the opposite direction to reset, driving the top frame 2 to rise and unfold.

[0049] The focus of this case is on the pull rope 7 and the torsion spring 8. The torsion spring 8 is arranged between the flap 5 and the first bottom frame 1. It has been explained above that it can be sleeved on the pivot 92. One end of the pull rope 7 is connected to the sliding end 33, and the other end is connected to the flap 5. The fixed end 34 is located between the sliding end 33 and the flap 5. The utility model realizes the lifting linkage of the flap 5 and the top frame 2 through the cooperation of the pull rope 7 and the torsion spring 8. The specific linkage process is as follows:

[0050] like Figure 6-9 As shown, when the driving device 6 drives the top frame 2 to descend, the sliding end 33 slides to a position away from the fixed end 34 which is also on the first bottom frame 1 or the top frame 2, that is, the sliding end 33 moves in a direction away from the flap 5 until the roof tent is folded. During this process, the sliding end will tighten the pull rope 7, and the pull rope 7 will drive the flap 5 to rotate until it is folded above the first bottom frame 1. At this time, the torsion spring 8 is compressed to store torque; when the driving device 6 drives the top frame 2 to rise, the sliding end 33 will slide in the opposite direction, thereby gradually approaching the flap 5. At this time, the torsion spring 8 is released, and the torsion reset of the torsion spring 8 pushes the flap 5 to rotate, and the pull rope 7 is tightened by the flap 5. The traction force of the pull rope 7 will cause the flap 5 to rotate slowly until it extends to the outside of the first bottom frame 1.

[0051] Therefore, the utility model specially designs the structure of the pull rope 7 and the torsion spring 8, which ingeniously realizes the synchronous action of the flap 5 to unfold and fold while the tent is raised and lowered. When the top frame 2 needs to be raised or lowered, the user only needs to operate a driving device 6 to make the flap 5 and the top frame 2 move at the same time, which reduces the complexity and time required for operation, is easy to use, saves time and effort, and meets the user's needs for convenient and efficient use experience. Moreover, compared with other designs with complex structures such as connecting rod hinges and rack transmissions, the structure of the utility model is simpler, occupies less space, has low cost, and has good overall structural stability, which meets market demand.

[0052] As a preferred solution, Figure 2 and Figure 3 As shown, a pulley block 4 is provided 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 wire rope, and the steel wire rope and the pulley block 4 cooperate to form a wire rope pulley mechanism with a small friction coefficient and stable power transmission, which is beneficial to improving the stability and reliability of the entire linkage structure.

[0053] Further, such as Figure 3As shown, the pulley block 4 may have only one pulley for cooperating with the pull rope 7, or may have two pulleys for cooperating with the pull rope 7. Preferably, two pulleys are 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. The first pulley 42 and the second pulley 43 are arranged vertically on the pulley seat 41. 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 force direction of the pull rope 7 will change. The provision of two pulleys allows the pull rope 7 to always be able to cooperate with the pulley in a sliding manner.

[0054] Specifically, one end of the pull rope 7 is connected to the inner side of the lower end of the second fork 32, and the other end of the pull rope 7 is connected to the middle part of the outer side of the flap 5. The pulley block 4 is arranged at the inner side of the lower end of the first fork 31. In this way, when the tent is folded, the pulley seat 41 and the pull rope 7 are stored inside the tent, and the two ends and the middle part of the pull rope 7 are located on the same vertical plane, reducing 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 fixings.

[0055] One end of the pull rope 7 is preferably fixed at the middle position between the lower end surface of the second fork 32 and the cross hinge, that is, the lower middle part of the second fork 32, so that there is a distance between the pull rope 7 and the first base frame 1, and the middle part of the pull rope 7 is flush with the height of one end of the pull rope 7, that is, the position of the pulley seat 41 is flush with the position of one end of the pull rope 7, and the other end of the pull rope 7 is connected to the outer side of the flap 5. This arrangement allows an angle to be formed between the flap 5 and the pull rope 7 when the flap 5 is unfolded, making it easier to pull the flap 5, and a triangular structure is formed between the pull rope 7, the flap 5 and the fixed end 34. The triangle is stable, making the entire linkage structure more stable and reliable.

[0056] Key References Figure 1 The number of the first scissor-type lifting frames 3 and flaps 5 can be set as needed. The first scissor-type lifting frames 3 are preferably set in two groups. The two groups of first scissor-type lifting frames 3 are respectively arranged on the left and right sides of the top frame 2 and the first bottom frame 1, so that the lifting of the tent is more stable. The number of the flaps 5 is also preferably set in two. The two flaps 5 are respectively rotatably connected to the two sides of the first bottom frame 1. In order to make the two flaps 5 can be linked with the lifting of the top frame 2, the two groups of first scissor-type lifting frames are located at different end positions on the front and rear sides of the first bottom frame 1, for example, respectively located at the front left end and the rear right end of the first bottom frame 1, so that the two groups of first scissor-type lifting frames 3 are staggered and not arranged on the same end side of the first bottom frame 1, so that they can cooperate with the two flaps 5 respectively. The pull rope 7 and the torsion spring 8 are also set in two groups.

[0057] Key References Figure 1 and Figure 4The first bottom frame 1 and the top frame 2 are both provided with a slide rail 11 extending in the length direction on both the front and rear sides. The forked sliding end 33 is slidably fitted in the slide rail 11. The forked fixed end 34 is located at one end of the slide rail 11. The sliding end slides in the slide rail 11 through the driving device 6. Specifically, the driving device 6 can be an electric push rod or a screw nut transmission mechanism. The utility model is preferably a screw nut transmission mechanism. The driving device 6 includes a screw 61, a motor 62 and a screw nut 63. The screw 61 and the motor 62 are arranged in the slide rail 11. The end of the screw 61 is connected to the motor 62 to rotate the screw 61. The screw nut 63 is fitted on the screw 61 to slide along the screw 61. The forked sliding end 33 is pivotally connected to the screw nut 63. When in use, the motor 62 starts to drive the screw 61 to rotate, and the screw nut 63 on the screw 61 moves along the screw 61, while driving the sliding end 33 on the screw nut 63 to move along the screw 61 and rotate around the pivot, so as to realize the automatic opening and closing of the two forks, and then realize the automatic covering and separation of the top frame 2 relative to the first bottom frame 1. In addition, the driving device 6 can be only arranged on the slide rail 11 of the first bottom frame 1, the lower end of the second fork 32 is pivotally connected to the screw nut 63, the driving device 6 can be omitted in the slide rail 11 of the top frame 2, and a roller (not shown in the figure) is arranged at the upper end of the first fork 31, and the roller is slidably matched with the slide rail 11 of the top frame 2.

[0058] In another embodiment, the focus is on Figure 10-16 The roof tent can be a double-layer structure. The roof tent is also provided with a second base frame 12 and a second scissor-type lifting frame 35. The second base frame 12 is arranged below the first base frame 1. The second base frame 12 is installed on the vehicle. The second scissor-type lifting frame 35 is arranged between the second base frame 12 and the first base frame 1. The second scissor-type lifting frame 35 has the same structure as the first scissor-type lifting frame 3. Both of them include a first fork 31 and a second fork 32 that are cross-hinged. The upper and lower ends of the first fork 31 and the second fork 32 of the second scissor-type lifting frame 35 are respectively pivotally connected to the first base frame 1 and the second base frame 12, and the first fork 31 and the second fork 32 of the second scissor-type lifting frame 35 are respectively pivotally connected to the first base frame 1 and the second base frame 12. The upper end of the fork 31 and the lower end of the second fork 32 are also sliding ends 33 located on the same side. The two sliding ends 33 are respectively slidably arranged on the first base frame 1 and the second base frame 12, and the two forks rotate around the central hinge to open and close; the lower end of the first fork 31 of the first scissor-type lifting frame 3 and the upper end of the second fork 32 of the second scissor-type lifting frame 35 are coaxially pivoted and fixed on the first base frame 1 as the fixed end 34, and the lower end of the second fork 32 of the first scissor-type lifting frame 3 and the upper end of the first fork 31 of the second scissor-type lifting frame 35 are coaxially pivoted and slidably arranged on the first base frame 1.

[0059] A first scissor-type lifting frame 3 and a second scissor-type lifting frame 35 are set as a group of scissor-type lifting frames. The roof tent is provided with two groups of scissor-type lifting frames, and two flaps 5 are correspondingly provided, which are rotatably connected to the left and right sides of the first base frame 1 without scissor-type lifting frames, respectively. The two groups of scissor-type lifting frames are staggered and not arranged on the same end side of the first base frame 1, and the rope connection method between the flap 5 and the fixed end 34 is the same as that of the previous embodiment.

[0060] However, in order to make the lifting of the double-layer roof tent more stable, the two sets of scissor-type lifting frames can be symmetrically arranged, and the other set of scissor-type lifting frames can be symmetrically arranged on the other side of the first base frame 1. The two sets of scissor-type lifting frames are arranged at the same end position of the front and rear sides of the first base frame 1, for example, both are located at the left or right end position of the front and rear sides. Figure 8 As shown, a synchronization rod 10 can be set between two groups of scissor-type lifting frames, and the two ends of the synchronization rod 10 are respectively fixedly connected to the sliding ends 33 symmetrically arranged on the front and rear sides of the first base frame 1. The two groups of scissor-type lifting frames are linked to open and close through the synchronization rod 10, and a driving device 6 can be set to drive the tent to rise and fall. In this structure, one flap 5 is closer to the scissor-type lifting frame, and the other flap 5 is farther from the scissor-type lifting frame. The two flaps 5 are respectively connected to the two groups of scissor-type lifting frames and linked, but the connection methods are slightly different, as follows:

[0061] Key References Figure 11-13 The flap 5 close to one side of the scissor-type lifting frame is connected to the sliding end 33 of one of the first scissor-type lifting frames 3 through a first pull rope 71. The connection structure is the same as that of the previous embodiment. The fixed end 34 of the first scissor-type lifting frame 3 is located between the movable end and the flap 5. When the top frame 2 rises, the sliding end 33 moves away from the flap 5, and the first pull rope 71 is tightened to pull the flap 5.

[0062] The flap 5 away from one side of the scissor-type lifting frame is connected to the sliding end 33 of the other first scissor-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 on the side of the other first base frame 1 near the fixed end 34. One end of the second pull rope 72 is connected to the flap 5, and the other end of the second pull rope 72 bypasses the third pulley 44 and is connected to the sliding end 33. The third pulley 44 can change the pulling direction of the second pull rope 72, so that when the top frame 2 descends and the sliding end 33 slides close to the flap 5, the second pull rope 72 can be tightened, so that the flap 5 can be pulled over to be folded above the first base frame 1; when the top frame 2 rises, the torsion of the torsion spring 8 also drives the flap 5 to rotate and unfold.

[0063] Further, similar to the previous embodiment, a pulley block 4 may be provided on the fixed end 34 of the first scissor lift 3 connected to the first pull rope 71, the middle portion of the first pull rope 71 cooperates with the pulley block 4, and the first pull rope 71 cooperates with the pulley block 4 to form a wire rope pulley mechanism, which is beneficial to improving 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 to the outer side of the flap 5, making the linkage structure more stable and reliable.

[0064] The sliding end 33 of the first scissor-type lifting frame 3 connected to 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 an angle between the second pull rope 72 and the flap 5, making it easier to pull the flap 5. A triangular structure is formed between the second pull rope 72, the flap 5 and the second base frame 12, which also makes the linkage structure more stable and reliable.

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

Claims

1. An automatic flap device for a roof tent, characterized in that: It includes a first bottom frame, a top frame, a first scissor-type lifting frame, a flap, a driving device, a pull rope and a torsion spring; The side of the first bottom frame is rotatably connected with a flap, and the flap is rotatably folded above the first bottom frame or rotatably extended outside the first bottom frame; a first scissor-type lifting frame is arranged between the first bottom frame and the top frame to drive the top frame to descend to cover the flap and the first bottom frame, or to ascend to move away from the flap and the first bottom frame; The first scissor-type lifting frame comprises a first fork and a second fork cross-hinged, the upper and lower ends of the first fork and the second fork are respectively pivoted on the top frame and the first bottom frame, and the lower end of the first fork and the upper end of the second fork are fixed ends located on the same side, the upper end of the first fork and the lower end of the second fork are sliding ends located on the same side, the two sliding ends are respectively slidably arranged on the top frame and the first bottom frame, and the driving device is connected to at least one fork to drive the two forks to rotate and open and close around the cross hinge; A torsion spring is arranged between the flap and the first base 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 drawstring, and the drawstring pulls the flap to rotate and fold above the first bottom frame; when the driving device drives the top frame to rise, the sliding end slides in the opposite direction to loosen the drawstring, and the torsion of the torsion spring drives the flap to tighten the drawstring while rotating and extending to the outside of the first bottom frame.

2. The automatic flap device of a roof tent as claimed in claim 1, characterized in that: 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 cooperates with the pulley block.

3. The automatic flap device of a roof tent as claimed in claim 2, characterized in that: The pulley block includes a pulley seat, a first pulley and a second pulley. The pulley seat is fixed on a fixed end. The first pulley and the second pulley are arranged vertically on the pulley seat. The middle part of the pull rope is fitted between the first pulley and the second pulley. One end of the pull rope is flush with the height of the pulley seat.

4. The automatic flap device of a roof tent as claimed in claim 2 or 3, characterized in that: One end of the pull rope is connected to the inner side of the lower end of the second fork, and 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.

5. The automatic flap device of a roof tent as claimed in claim 2, characterized in that: There are two flaps, which are rotatably connected to the left and right sides of the first base frame respectively. There are two groups of the first scissor-type lifting frames, which are located on the front and rear sides of the first base frame and at different end positions on the front and rear sides.

6. The automatic flap device of a roof tent as claimed in claim 1, characterized in that: The vehicle further comprises a second chassis and a second scissor-type lifting frame, wherein the second chassis is arranged below the first chassis, the second chassis is mounted on the vehicle, and the second scissor-type lifting frame is arranged between the second chassis and the first chassis. The second scissor-type lifting frame has the same structure as the first scissor-type lifting frame, and both of them comprise a first fork and a second fork which are cross-hinged, and the upper and lower ends of the first fork and the second fork of the second scissor-type lifting frame are respectively pivotally connected to the first chassis and the second chassis, and the upper end of the first fork and the lower end of the second fork are also sliding ends located on the same side, and the two sliding ends are respectively slidably arranged on the first chassis and the second On the base frame, two forks rotate around the central hinge to open and close; the lower end of the first fork of the first scissor-type lifting frame and the upper end of the second fork of the second scissor-type lifting frame are coaxially pivoted and fixedly arranged on the first base frame as fixed ends, and the lower end of the second fork of the first scissor-type lifting frame and the upper end of the first fork of the second scissor-type lifting frame are coaxially pivoted and slidably arranged on the first base frame; a first scissor-type lifting frame and a second scissor-type lifting frame are set as a group of scissor-type lifting frames, the roof tent is provided with two groups of scissor-type lifting frames, and the other group of scissor-type lifting frames is symmetrically arranged on the other side of the first base frame.

7. The automatic flap device of a roof tent as claimed in claim 6, characterized in that: Two groups of scissor-type lifting frames are arranged at the same end position on both sides of the first base frame, and the two flaps are respectively rotatably connected to both sides of the first base frame. The flap close to one side of the scissor-type lifting frame is connected to the sliding end of one of the first scissor-type lifting frames through a first pull rope; The flap away from one side of the scissor-type lifting frame is connected to the sliding end of the other first scissor-type lifting frame through a second pull rope, and a third pulley is provided on the side of the other first base frame at a position near the corresponding 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. The automatic flap device of a roof tent as claimed in claim 7, characterized in that: A pulley block is provided on the fixed end of the first scissor-type lifting frame connected to the first pull rope, and the middle part of the first pull rope cooperates with the pulley block; a fourth pulley is provided above the pull rope at the sliding end of the first scissor-type lifting frame connected to the second pull rope, and the middle part of the second pull rope cooperates with the fourth pulley and the third pulley in sequence.

9. The automatic flap device of a roof tent as claimed in claim 7, characterized in that: A synchronization rod is arranged between the two groups of scissor-type lifting frames, and the two ends of the synchronization rod are respectively fixedly connected to the sliding ends symmetrically arranged at the front and rear sides of the first base frame, and the two groups of scissor-type lifting frames are linked to open and close through the synchronization rod.

10. The automatic panel-turning device for a roof tent as claimed in claim 1, characterized in that: A plurality of rotating components are arranged at the rotating position of the flap and the first base frame, each rotating component includes two L-shaped connecting members and a pivot, one end of the two L-shaped connecting members are respectively fixed to the flap and the first base frame, and the other ends of the two L-shaped connecting members are pivotally connected together through a pivot to form a herringbone structure, the torsion spring is sleeved on the pivot, and the two ends of the torsion spring are respectively fixed to the flap and the first base frame.

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