Motor home roof automatic lifting system based on multi-connecting-rod mechanism

Abstract

The invention discloses a motor home roof automatic lifting system based on a multi-connecting-rod mechanism, which comprises a roof, a mounting frame and a controller, and the lifting function of the automatic lifting system on the roof of the motor home is realized between the roof and the mounting frame through a roof lifting device; a car roof lifting device comprises four lifting assemblies used for improving lifting stability. Each lifting assembly comprises a hydraulic rod, a first connecting rod and a second connecting rod. Through cooperation of a hydraulic rod, a first connecting rod and a second connecting rod, in the car roof rising process, the first connecting rod and the second connecting rod are folded and bent with an upper connecting shaft and a lower connecting shaft as fulcrums correspondingly to jack up a car roof, and the two ends of the first connecting rod and the two ends of the second connecting rod are limited through a lower limiting groove and an upper limiting groove correspondingly; and meanwhile, the pushing shaft and the pulling shaft are clamped in the through groove, so that the roof and the mounting frame are stably connected, the ascending process is more stable, and the problem that the stability and the bearing capacity are reduced due to the fact that a large motor home only depends on a simple hydraulic device is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of RVs, and specifically to an automatic lifting system for the roof of an RV based on a multi-link mechanism. Background Art

[0002] With the progress of automotive technology, the reliability and durability of new energy power systems have been continuously enhanced, which can meet the usage requirements of RVs under different road conditions and environments. This enables the smooth grafting of new energy technology onto RVs, promoting the development of new energy RVs, and thus establishing a connection between RVs and new energy RVs based on technological inheritance and innovation.

[0003] In some new energy RVs, the automatic lifting technology of the RV roof can increase flexibility in space utilization and optimize the storage layout of the RV, improving ventilation, lighting, and the viewing experience; however, most of the existing roof automatic lifting technologies use hydraulic devices to complete the roof lifting work. The hydraulic devices are arranged in four directions of the vehicle, and hydraulic oil is pumped into the hydraulic cylinders to push the pistons to move, thereby realizing the lifting of the roof. The hydraulic system has good stability and strong load-bearing capacity; however, when applied to some large RVs, due to their large space, the hydraulic devices in the four directions are far apart, and their stability and load-bearing capacity decrease. Relying solely on simple hydraulic devices cannot meet the stability requirements. Therefore, the present invention proposes an automatic lifting system for the roof of an RV based on a multi-link mechanism. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic lifting system for the roof of an RV based on a multi-link mechanism to solve the problems raised in the above background.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An automatic lifting system for the roof of an RV based on a multi-link mechanism, including a roof, a mounting frame, and a controller. A skylight and a chute are fixedly arranged on the upper surface of the roof. Two groups of solar panels are slidably arranged inside the chute. Wires are connected to the surfaces of the solar panels. A number of upper limit slots are opened inside the roof, and a number of lower limit slots corresponding to the positions of the upper limit slots are opened inside the mounting frame. An automatic lifting function of the RV roof is realized between the roof and the mounting frame through a roof lifting device. A roof lifting device includes four groups of lifting components for improving the lifting stability. A protection component for improving the safety of the ventilation window is arranged between adjacent lifting components. An opening and closing component for automatically controlling the sliding of the solar panels to open or close the skylight is arranged between two groups of parallel lifting components.

[0006] Preferably, the controller is connected to the lifting assembly to control the working state of the roof lifting device. The lifting assembly includes a hydraulic rod, a first connecting rod, and a second connecting rod. A driving frame is fixedly arranged on the upper surface of the hydraulic rod. Through grooves are symmetrically formed on both sides of the driving frame. A upper connecting shaft is rotatably arranged in the middle of the first connecting rod, and the upper connecting shaft is fixed on the surface of the roof. Both ends of the first connecting rod slide on the surface of the lower limit groove. A lower connecting shaft is arranged in the middle of the second connecting rod, and the lower connecting shaft is fixed on the surface of the mounting frame. Both ends of the second connecting rod slide on the surface of the upper limit groove. The upper connecting shaft on the surface of the first connecting rod and the lower connecting shaft on the surface of the second connecting rod can both be folded and bent.

[0007] Preferably, the first connecting rod and the second connecting rod are arranged cross-symmetrically. The cross-overlapping part on the side close to the protection assembly is rotatably connected through a push shaft, and the cross-overlapping part on the side close to the solar panel is rotatably connected through a pull shaft. A collar is arranged on the surface of the pull shaft. The push shaft slides in the through groove on the surface of the driving frame close to the protection assembly, and the pull shaft slides in the through groove on the surface of the driving frame close to the solar panel.

[0008] Preferably, the protection assembly includes a push-pull rod, a first connecting rod, and a second connecting rod. Among them, push-pull rods are sleeved on the surfaces of the push shafts in several groups of lifting assemblies. First hinge rods and second hinge rods are rotatably arranged at one ends of the surfaces of several push-pull rods far away from the push shafts. Among them, the first hinge rods in adjacent two groups of protection assemblies are rotatably connected through the first connecting rod, and the second hinge rods in adjacent two groups of protection assemblies are rotatably connected through the second connecting rod.

[0009] An induction alarm is arranged at one end of the push-pull rod far away from the push shaft.

[0010] Preferably, the opening and closing assembly includes an arc-shaped swing frame. Both ends of the arc-shaped swing frame are respectively rotatably arranged on the upper surfaces of the driving frames in the parallel arranged lifting assemblies. A mounting member is fixedly installed on the surface of the arc-shaped swing frame. A connecting block is rotatably connected to the surface of the mounting member. One end of the surface of the connecting block far away from the mounting member is rotatably connected to the solar panel.

[0011] Preferably, the interiors of the arc-shaped swing frame and the driving frame are hollow for hiding the arrangement of wires.

[0012] Preferably, the wire passes through the collar on the surface of the pull shaft.

[0013] Preferably, rollers are arranged at the connection between the chute and the solar panel to improve the flexibility of the movement of the solar panel.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention cooperates with the hydraulic rod, the first connecting rod and the second connecting rod. During the process of the roof rising, the first connecting rod and the second connecting rod are folded and bent with the upper connecting shaft and the lower connecting shaft as fulcrums to lift the roof, and the two ends of the first connecting rod and the second connecting rod are limited by the lower limit groove and the upper limit groove respectively, and the pushing shaft and the pulling shaft are clamped in the through groove at the same time, so that the connection between the roof and the mounting frame is stable, and the rising process is smoother, which solves the problem of reduced stability and load-bearing capacity caused by relying only on simple hydraulic devices on large RVs.

[0015] 2. The present invention uses the driving shafts in the two adjacent lifting assemblies to pull the push-pull rods in the two adjacent protective assemblies to retract into the through slots, so that the push-pull rods on both sides move in opposite directions, and the first connecting rod and the first connecting rod are used to open the first connecting rod and the second connecting rod to form a rectangular frame. The curtains on the roof cloth are fixed to the frame to improve the stability of the curtains and prevent them from swinging arbitrarily due to the wind; at the same time, an induction alarm is set inside the push-pull rod, and an alarm is triggered when an object passes through the rectangular frame, thereby improving the safety of the RV windows.

[0016] 3. In the process of the roof rising, the first connecting rod and the second connecting rod gradually lift up the roof, and the distance between the driving frame and the roof is lengthened. Since the lower end of the arc-shaped swing frame is installed on the surface of the driving frame, the sliding limit of the solar panel is located inside the slide groove. The farther the distance between the driving frame and the roof is, the more the arc-shaped swing frame converts the traction force into a swinging force, pushing the solar panel to slide in the slide groove, thereby removing the obstruction and closure of the skylight and improving the lighting and viewing effects inside the RV.

[0017] 4. The solar panels, automatic lifting system and RV transmit electrical energy through wires. The wires will be affected during the lifting of the roof. In the device, the wires are passed through the arc-shaped swing frame and the drive frame, and are also sleeved on the ring on the surface of the pulling shaft. When the roof is reset and closed, the pulling shaft moves in the through groove away from the hydraulic rod based on the movement relationship between the first connecting rod and the second connecting rod, pulling the wires to avoid the part of the wire that cannot be retracted affecting the closure of the roof and the mounting frame, thereby improving the protection of the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of a roof lifting device in an automatic roof lifting system; Figure 2 It is a schematic diagram of the relationship between the roof lifting device and the roof position; Figure 3 It is a schematic diagram of the lifting component structure; Figure 4 Schematic diagram of the structure of the first connecting rod and the second connecting rod; Figure 5 This is a schematic diagram of the protection component structure; Figure 6 It is a schematic diagram of the opening and closing component structure; Figure 7 It is a diagram of the positional relationship of the wire arrangement; In the figure: 1. Roof; 11. Sunroof; 12. Slide groove; 13. Upper limit groove; 2. Mounting bracket; 21. Lower limit groove; 3. Solar panel; 4. Lifting assembly; 41. Hydraulic rod; 42. Driving frame; 43. Through groove; 44. First connecting rod; 45. Second connecting rod; 46. Pushing shaft; 47. Upper connecting shaft; 48. Lower connecting shaft; 49. Pulling shaft; 5. Protection assembly; 51. Push-pull rod; 52. First hinge rod; 53. Second hinge rod; 54. First connecting rod; 55. Second connecting rod; 6. Opening and closing assembly; 61. Arc swing frame; 62. Mounting part; 63. Connecting block; 64. Wire groove; 7. Wire. Specific implementation method

[0019] As Figure 1 and Figure 2 shown, the automatic lifting system for the roof of a motorhome based on a multi-link mechanism includes a roof 1, a mounting bracket 2 and a controller. A sunroof 11 and a slide groove 12 are fixedly arranged on the upper surface of the roof 1. Two groups of solar panels 3 are slidably arranged inside the slide groove 12. A wire 7 is connected to the surface of the solar panel 3. Several groups of upper limit grooves 13 are opened inside the roof 1. Several groups of lower limit grooves 21 corresponding to the positions of the upper limit grooves 13 are opened inside the mounting bracket 2. The automatic lifting function of the roof of the motorhome by the automatic lifting system is realized between the roof 1 and the mounting bracket 2 through a roof lifting device; A roof lifting device includes four groups of lifting assemblies 4 for improving the lifting stability. A protection assembly 5 for improving the safety of the ventilation window is arranged between adjacent lifting assemblies 4. An opening and closing assembly 6 for automatically controlling the sliding of the solar panel 3 to open or close the sunroof 11 is arranged between two groups of parallel lifting assemblies 4.

[0020] The controller is connected to the lifting assembly 4 for controlling the working state of the roof lifting device. As Figure 3 and Figure 4 shown, the lifting assembly 4 includes a hydraulic rod 41, a first connecting rod 44 and a second connecting rod 45. A driving frame 42 is fixedly arranged on the upper surface of the hydraulic rod 41. Through grooves 43 are symmetrically opened on both sides of the driving frame 42. An upper connecting shaft 47 is rotatably arranged in the middle of the first connecting rod 44. The upper connecting shaft 47 is fixed to the surface of the roof 1. Both ends of the first connecting rod 44 slide on the surface of the lower limit groove 21. A lower connecting shaft 48 is arranged in the middle of the second connecting rod 45. The lower connecting shaft 48 is fixed to the surface of the mounting bracket 2. Both ends of the second connecting rod 45 slide on the surface of the upper limit groove 13. Folding and bending can be carried out at the upper connecting shaft 47 on the surface of the first connecting rod 44 and at the lower connecting shaft 48 on the surface of the second connecting rod 45.

[0021] The first connecting rod 44 and the second connecting rod 45 are arranged in a cross-symmetric manner. The cross-over and superposition part on the side close to the protection component 5 is rotatably connected through a push shaft 46, and the cross-over and superposition part on the side close to the solar panel 3 is rotatably connected through a pull shaft 49. A collar is arranged on the surface of the pull shaft 49. The push shaft 46 slides at the through groove 43 on the surface of the driving frame 42 close to the protection component 5, and the pull shaft 49 slides at the through groove 43 on the surface of the driving frame 42 close to the solar panel 3.

[0022] As Figure 5 shown, the protection component 5 includes a push-pull rod 51, a first connecting rod 54 and a second connecting rod 55. Among them, push-pull rods 51 are sleeved on the surfaces of the push shafts 46 in several groups of lifting components 4. One ends of the surfaces of several push-pull rods 51 far from the push shafts 46 are rotatably provided with a first hinge rod 52 and a second hinge rod 53. Among them, the first hinge rods 52 in adjacent two groups of protection components 5 are rotatably connected through the first connecting rod 54, and the second hinge rods 53 in adjacent two groups of protection components 5 are rotatably connected through the second connecting rod 55.

[0023] An induction alarm is arranged at one end of the interior of the push-pull rod 51 far from the push shaft 46.

[0024] As Figure 6 shown, the opening and closing component 6 includes an arc-shaped swing frame 61. Two ends of the arc-shaped swing frame 61 are respectively rotated on the upper surface of the driving frame 42 arranged in parallel in the lifting component 4. An installation part 62 is fixedly installed on the surface of the arc-shaped swing frame 61. A connecting block 63 is rotatably connected to the surface of the installation part 62. One end of the surface of the connecting block 63 far from the installation part 62 is rotatably connected to the solar panel 3.

[0025] As Figure 7 shown, the interior of the arc-shaped swing frame 61 and the driving frame 42 is hollow, which is used for hiding and arranging the wire 7.

[0026] The wire 7 passes through the collar on the surface of the pull shaft 49.

[0027] Rollers are arranged at the connection part between the chute 12 and the solar panel 3, which is used to improve the flexibility of the movement of the solar panel 3.

[0028] Working principle: When it is necessary to raise the roof of the RV, by inputting a rising command into the automatic lifting system, the controller controls the four groups of hydraulic rods 41 to open synchronously, and the hydraulic rods 41 begin to move upward. During the movement, since the pushing shaft 46 and the pulling shaft 49 are clamped in the inside of the through groove 43, and at the same time, the two ends of the first connecting rod 44 and the second connecting rod 45 are respectively limited by a number of lower limit grooves 21 and upper limit grooves 13. During the rising process of the hydraulic rod 41, the first connecting rod 44 and the second connecting rod 45 respectively start to fold and bend with the upper connecting shaft 47 and the lower connecting shaft 48 as fulcrums to lift the roof 1, thereby guiding the roof 1 to rise; through the cooperation of the hydraulic rod 41, the first connecting rod 44 and the second connecting rod 45, the stability of the connection between the roof 1 and the mounting frame 2 can be improved, so that the roof 1 can be more stable during the rising process.

[0029] At the same time, when the middle parts of the first connecting rod 44 and the second connecting rod 45 are folded and bent, the pushing shaft 46 and the pulling shaft 49 therebetween slide in the through slot 43 and converge toward the direction of the hydraulic rod 41 due to the change of the included angle; In order to improve the stability and safety of the roof cloth windows, during the process of concentrating and moving together, the driving shafts 46 in the two adjacent groups of lifting assemblies 4 pull the push-pull rods 51 in the two adjacent groups of protective assemblies 5 to retract into the through grooves 43, and the push-pull rods 51 on both sides move in opposite directions respectively, thereby stretching the first connecting rod 54 and the second connecting rod 55 through the first hinged rod 52 and the first connecting rod 54. After being stretched, a rectangular frame is formed between the first hinged rod 52, the second hinged rod 53, the first connecting rod 54 and the second connecting rod 55. The curtains on the roof cloth are fixedly installed on the rectangular frame, which can improve the stability of the curtains and avoid them from swinging at will due to the influence of wind. At the same time, an induction alarm is arranged inside the push-pull rod 51. When an object passes through the inside of the rectangular frame, the alarm is immediately triggered, and an alarm sound is issued to remind, thereby improving the safety of the RV windows.

[0030] In order to improve the lighting and viewing effects inside the RV, during the rising process of the roof 1, the first connecting rod 44 and the second connecting rod 45 gradually lift up the roof 1, and the distance between the driving frame 42 and the roof 1 is gradually lengthened. Since the lower end of the arc-shaped swing frame 61 is installed on the surface of the driving frame 42, and the sliding limit of the solar panel 3 is located inside the slide groove 12, the farther the distance between the driving frame 42 and the roof 1 is, the arc-shaped swing frame 61 converts the traction force between them into a swinging force, thereby pushing the solar panel 3 to slide inside the slide groove 12. After sliding, the solar panel 3 releases the blocking and closure of the skylight 11, thereby improving the lighting and viewing effects inside the RV.

[0031] Furthermore, a pull-out sunshade is provided under the skylight 11, which can be used flexibly. At the same time, the sliding solar panel 3 extends to the front and rear of the vehicle, and can also shield the two sides of the RV from rain and sunlight.

[0032] Since electrical energy is transmitted between the solar panel 3, the automatic lifting system and the RV through the wire 7, and the solar panel 3 is arranged on the upper surface of the roof 1, the distance between the roof 1 and the mounting frame 2 changes continuously during the lifting process. When the roof 1 rises, the wire 7 is in a stretched state. When the roof 1 and the mounting frame 2 are in a closed state, the stretched wire 7 cannot retract with the help of external force, which easily causes the wire 7 to be stuck between the lifting component 4, the roof 1 and the mounting frame 2, having an adverse effect on the closure of the roof 1 and the mounting frame 2. In this device, the wire 7 is threaded through the inside of the arc-shaped swing frame 61 and the drive frame 42, and at the same time is sleeved on the surface of the collar on the surface of the pulling shaft 49. When the rising roof 1 is reset and closed, the pulling shaft 49 moves away from the hydraulic rod 41 inside the through groove 43 based on the movement relationship of the first link 44 and the second link 45, thereby pulling the wire 7 during the closing process to avoid the part where the wire 7 cannot retract from having an adverse effect on the closure of the roof 1 and the mounting frame 2, and at the same time improving the protection of the wire 7.

[0033] The above embodiments only represent the implementation modes of the present invention and should not be construed as limiting the scope of the invention patent, nor as imposing any formal restrictions on the structure of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. An automatic lifting system for the roof of a motorhome based on a multi-link mechanism, comprising a roof (1), a mounting frame (2) and a controller. A skylight (11) and a chute (12) are fixedly arranged on the upper surface of the roof (1). Two groups of solar panels (3) are slidably arranged inside the chute (12). A wire (7) is connected to the surface of the solar panel (3). A number of upper limit grooves (13) are formed inside the roof (1). A number of lower limit grooves (21) corresponding to the positions of the upper limit grooves (13) are formed inside the mounting frame (2). It is characterized in that: An automatic lifting system for the roof of a motorhome is realized by a roof lifting device between the roof (1) and the mounting frame (2). A roof lifting device includes four lifting components (4) for improving the smoothness of lifting. A protection component (5) for enhancing the safety of the ventilation window is arranged between adjacent lifting components (4). An opening and closing component (6) for automatically controlling the sliding of the solar panel (3) to open or close the skylight (11) is arranged between two parallel lifting components (4).

2. The automatic lifting system for the roof of a motorhome based on a multi-link mechanism according to claim 1, characterized in that: The controller is connected to the lifting component (4) to control the working state of the roof lifting device. The lifting component (4) includes a hydraulic rod (41), a first connecting rod (44) and a second connecting rod (45). A driving frame (42) is fixedly arranged on the upper surface of the hydraulic rod (41). Through grooves (43) are symmetrically arranged on both sides of the driving frame (42). An upper connecting shaft (47) is rotatably arranged in the middle of the first connecting rod (44), and the upper connecting shaft (47) is fixed on the surface of the roof (1). Both ends of the first connecting rod (44) slide on the surface of the lower limit groove (21). A lower connecting shaft (48) is arranged in the middle of the second connecting rod (45), and the lower connecting shaft (48) is fixed on the surface of the mounting frame (2). Both ends of the second connecting rod (45) slide on the surface of the upper limit groove (13). Folding and bending can be carried out at the upper connecting shaft (47) on the surface of the first connecting rod (44) and the lower connecting shaft (48) on the surface of the second connecting rod (45).

3. The automatic lifting system for the roof of a motorhome based on a multi-link mechanism according to claim 2, characterized in that: The first connecting rod (44) and the second connecting rod (45) are arranged in a cross-symmetrical manner. The cross-overlapping part on the side close to the protection component (5) is rotatably connected through a push shaft (46). The cross-overlapping part on the side close to the solar panel (3) is rotatably connected through a pull shaft (49). A collar is arranged on the surface of the pull shaft (49). The push shaft (46) slides at the through groove (43) on the surface of the driving frame (42) close to the protection component (5). The pull shaft (49) slides at the through groove (43) on the surface of the driving frame (42) close to the solar panel (3).

4. The automatic lifting system for the roof of a motorhome based on a multi-link mechanism according to claim 1, wherein: The protection component (5) includes a push-pull rod (51), a first connecting rod (54) and a second connecting rod (55). Among them, push-pull rods (51) are sleeved on the surfaces of the push shafts (46) in several groups of lifting components (4). First hinge rods (52) and second hinge rods (53) are rotatably arranged at one ends of the surfaces of the push-pull rods (51) far from the push shafts (46). Among them, the first hinge rods (52) in adjacent two groups of protection components (5) are rotatably connected through the first connecting rod (54). The second hinge rods (53) in adjacent two groups of protection components (5) are rotatably connected through the second connecting rod (55).

5. The automatic lifting system for a motorhome roof based on a multi-link mechanism according to claim 4, characterized in that: An induction alarm is arranged at one end of the push-pull rod (51) far from the push shaft (46).

6. The automatic lifting system for the roof of a motorhome based on a multi-link mechanism according to claim 1, characterized in that: The opening and closing assembly (6) includes an arc-shaped swing frame (61). Two ends of the arc-shaped swing frame (61) are respectively rotatably connected to the upper surfaces of drive frames (42) in the parallel lift assembly (4). An installation member (62) is fixedly installed on the surface of the arc-shaped swing frame (61). A connection block (63) is rotatably connected to the surface of the installation member (62). One end of the connection block (63) away from the installation member (62) is rotatably connected to the solar panel (3).

7. The automatic lifting system for the roof of a recreational vehicle based on a multi-link mechanism according to claim 6, characterized in that: The interiors of the arc-shaped swing frame (61) and the drive frame (42) are hollow, which is used for hiding and arranging the wire (7).

8. The automatic lifting system for the roof of a recreational vehicle based on a multi-link mechanism according to claim 7, characterized in that: The wire (7) passes through a collar on the surface of the pulling shaft (49).

9. The automatic lifting system for the roof of a motorhome based on a multi-link mechanism according to claim 1, characterized in that: Rollers are arranged at the connection between the sliding groove (12) and the solar panel (3), which is used to improve the flexibility of the movement of the solar panel (3).

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