Hidden toilet structure of motor caravan

Abstract

The invention belongs to the technical field of electric automobile accessories, and particularly relates to a hidden toilet structure of a motor caravan. Comprising a bottom plate module, a U-shaped back plate, a washing table, expansion plate assemblies, a connecting plate, an expansion mechanism, a blow-off pipe, an adjustable base and a closestool, the rear side of the bottom plate module is connected with the U-shaped back plate, the washing table is arranged on the inner side of the U-shaped back plate, the expansion plate assemblies are installed on the left side and the right side of the U-shaped back plate, and the connecting plate is connected with the expansion mechanism. The two expansion plate assemblies are connected through the connecting plate, each expansion plate assembly comprises sliding side plates, a rotating door and a privacy curtain, and the sliding side plates are arranged on the left side and the right side of the U-shaped back plate. The extensible plate assembly and the expansion mechanism are adopted, the problems that the space of a traditional toilet is fixed and cannot be adjusted can be effectively solved, when the toilet does not need to be used, a closestool can be contained below a washing table, the space occupied by the toilet is greatly reduced, and therefore more activity areas in a vehicle are released.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicle accessories, and particularly relates to a hidden toilet structure for a recreational vehicle. Background Art

[0002] With the development of new energy technologies, recreational vehicles are gradually becoming popular as a new lifestyle. New energy recreational vehicles are not only environmentally friendly and energy-saving but also provide convenient mobile living solutions for travelers. However, arranging various living facilities reasonably within a limited space poses a major challenge in design, especially the design of the toilet is crucial for the effective use of the vehicle interior space. As an indispensable part of a recreational vehicle, the space occupied by the toilet directly affects the overall layout and usage efficiency inside the vehicle. Therefore, how to minimize its occupancy of the vehicle interior space while ensuring the functionality and comfort of the toilet has become the focus of attention.

[0003] Existing design solutions for recreational vehicle toilets usually have the problem of inflexible space utilization. The traditional toilet structure is fixed and cannot be adjusted in size according to actual needs, resulting in the occupation of valuable aisle space inside the vehicle even when not in use for toilet or shower, restricting the movement range and comfort of passengers. In addition, when the toilet is not in use, its fixed structure cannot provide additional storage or activity space, further affecting the practicality and flexibility of the recreational vehicle. Summary of the Invention

[0004] In order to overcome the drawbacks that the traditional toilet structure is fixed and cannot be adjusted in size according to actual needs, resulting in the occupation of valuable aisle space inside the vehicle even when not in use for toilet or shower, restricting the movement range and comfort of passengers, the present invention provides a hidden toilet structure for a recreational vehicle that can flexibly adjust the space size and optimize space utilization.

[0005] The technical solution of the present invention is: a hidden toilet structure of a caravan, comprising a bottom plate module, a U-shaped back plate, a washbasin, an expansion plate assembly, a connecting plate, an expansion mechanism, a sewage pipe, an adjustable base and a toilet, wherein the rear side of the bottom plate module is connected to the U-shaped back plate, the inner side of the U-shaped back plate is provided with the sink, the left and right sides of the U-shaped back plate are both provided with the expansion plate assembly, the two expansion plate assemblies are connected through the connecting plate, the expansion plate assembly comprises a sliding side plate, a revolving door and a privacy curtain, the left and right sides of the U-shaped back plate are both provided with the sliding side plates, the two sides of the sliding side plates facing each other are both rotatably connected with the revolving door, the two sides of the sliding side plates facing each other are both connected with the privacy curtain, the expansion mechanism for pushing the expansion plate assembly forward is installed on the U-shaped back plate, the bottom plate module is connected to the sewage pipe, the top of the sewage pipe is provided with the adjustable base, the top of the adjustable base is provided with the toilet, and the toilet can be moved out or stored back from under the washbasin through the adjustable base.

[0006] In one embodiment, the expansion mechanism includes a U-shaped rocker arm, a guide shaft, a connecting rod and an electric push rod. The U-shaped rocker arm is movably connected to the U-shaped back panel, the end of the U-shaped rocker arm is connected to the guide shaft, the sliding side panels are each provided with a vertical groove, the guide shaft is located in the vertical groove, the connecting rod is connected to the U-shaped rocker arm, and the electric push rod is hingedly connected between the end of the connecting rod away from the U-shaped rocker arm and the washbasin.

[0007] In one embodiment, the adjustable base includes a connecting sleeve, a rotating seat, a fixing ring, a toothless worm gear, a servo motor and a worm; the connecting sleeve is fixedly connected to the top of the base plate module; the sewage pipe is connected and communicated with the connecting sleeve; the sealing sleeve of the rotating seat is arranged on the outside of the connecting sleeve; the defecation port of the toilet is located above the connecting sleeve; the toilet and the rotating seat can rotate circumferentially around the connecting sleeve; the servo motor and the worm gear are installed on the connecting sleeve; the worm gear and the servo motor are connected in transmission; the bottom of the rotating seat is connected to the toothless worm gear meshing with the worm gear through a fixing ring.

[0008] In one of the embodiments, a limit assembly is further included, and the limit assembly includes a magnetic limit block and an iron block. The bottom of the connecting plate is connected to the magnetic limit block, and the top of the revolving door is connected to the iron block, and the iron block is in contact with the magnetic limit block.

[0009] In one embodiment, a shower mechanism is further included. The shower mechanism includes a first moving pair, a water tank, a lid, a booster pump, a shower head, and a lifting mechanism. The first moving pair is inclinedly installed on the U-shaped back plate. The moving part of the first moving pair is connected to the water tank. The lid is connected to the water tank. The booster pump is installed on the water tank and is in internal communication with the water tank. The water outlet end of the booster pump is connected to the shower head. The lifting mechanism is installed on the upper part of the U-shaped back plate and is connected to the top of the water tank for driving the water tank to move up and down.

[0010] In one embodiment, a shower head support assembly is further included. The shower head support assembly includes a second moving pair, a cross bar, a sliding rod, and a shower head seat. The second moving pair is installed on the U-shaped back plate. The moving part of the second moving pair is connected to the cross bar. The sliding rod is rotatably connected to the cross bar. The shower head seat for placing the shower head is installed on the sliding rod.

[0011] In one embodiment, support wheels and a brush are further included. The support wheels are installed at the bottom of the rotating seat and are in contact with the top of the bottom plate module. The lower part of the rotating seat is connected to the brush, and the lower end of the brush is in contact with the top of the bottom plate module.

[0012] In one embodiment, a grille plate is further included. A drainage groove is provided at the front side of the top of the bottom plate module, and the grille plate is detachably provided in the drainage groove.

[0013] In one embodiment, a permanent magnet is further included. The permanent magnet is installed on the upper part of the second moving pair, and the moving part of the second moving pair is made of a material that can be attracted by the permanent magnet.

[0014] Beneficial effects: The present invention adopts an expandable plate assembly and an expansion mechanism, which can effectively solve the problem of the fixed and non-adjustable space of the traditional bathroom. When the bathroom is not needed, the toilet can be stored under the washbasin, greatly reducing the space occupied by the bathroom, thereby releasing more activity areas in the vehicle. When the bathroom is needed, the user can easily expand the bathroom space by operating the expansion mechanism, improving the convenience and comfort of use. At the same time, the adjustable design of the toilet position and the privacy protection measures of the rotating door further enhance the user experience, making the use of the entire bathroom more user-friendly. In addition, the brush installed at the bottom of the rotating seat and the design of the drainage groove ensure the cleanliness of the bathroom and improve the quality of the overall living environment. Description of the Drawings

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the storage state of the expandable plate assembly of the present invention.

[0016] Figure 2 This is a three-dimensional structural schematic diagram of the unfolded state of the expansion board assembly of the present invention.

[0017] Figure 3 This is a partial three-dimensional structural schematic diagram of the unfolded state of the expansion board assembly of the present invention.

[0018] Figure 4 This is a three-dimensional structural schematic diagram of the working state of the expansion mechanism of the present invention.

[0019] Figure 5 This is a sectional structural schematic diagram of the adjustable base of the present invention.

[0020] Figure 6 This is an exploded view of the adjustable base of the present invention.

[0021] Figure 7 This is a connection schematic diagram of the servo motor, worm, gear and connecting sleeve of the present invention.

[0022] Figure 8 This is a connection schematic diagram of the magnetic attraction limit block, iron block and rotating door of the present invention.

[0023] Figure 9 This is a three-dimensional structural schematic diagram of the shower mechanism of the present invention.

[0024] Figure 10 This is a three-dimensional structural schematic diagram of the lifting mechanism of the present invention.

[0025] Figure 11 This is a three-dimensional structural schematic diagram of the shower head support assembly of the present invention.

[0026] In the figure, the labels are: 1 - bottom plate module, 2 - U-shaped back plate, 3 - washstand, 4 - expansion board assembly, 41 - sliding side plate, 42 - guide rail, 43 - guide groove, 44 - rotating door, 45 - privacy curtain, 5 - connecting plate, 6 - expansion mechanism, 61 - U-shaped swing rod, 62 - guide shaft, 63 - vertical groove, 64 - connecting rod, 65 - electric push rod, 7 - sewage pipe, 8 - adjustable base, 81 - connecting sleeve, 82 - rotating seat, 83 - through hole, 84 - fixing ring, 85 - toothless worm gear, 86 - servo motor, 87 - worm, 88 - gear, 9 - toilet, 10 - grille plate, 11 - limit assembly, 111 - magnetic attraction limit block, 112 - iron block, 12 - shower mechanism, 121 - first moving pair, 122 - water tank, 123 - avoidance groove, 124 - lid, 125 - booster pump, 126 - shower head, 127 - lifting mechanism, 1271 - winch, 1272 - slide rail, 1273 - sliding frame, 1274 - limit wheel, 13 - shower head support assembly, 131 - second moving pair, 132 - cross bar, 133 - slide bar, 134 - shower head seat, 14 - permanent magnet, 15 - support wheel, 16 - brush, 17 - handle groove. Detailed implementation manners

[0027] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0028] First Embodiment: A hidden toilet structure for a recreational vehicle, as Figures 1-4 shown, comprising a bottom plate module 1, a U-shaped back plate 2, a washbasin 3, an extension plate assembly 4, a connecting plate 5, an expansion mechanism 6, a sewage pipe 7, an adjustable base 8 and a toilet 9. The rear side of the top of the bottom plate module 1 is connected to the U-shaped back plate 2. A washbasin 3 is installed in the middle of the U-shaped back plate 2. A washbasin and a faucet are provided on the washbasin 3. Extension plate assemblies 4 are installed on the outer walls of the left and right sides of the U-shaped back plate 2. The tops of the two side extension plate assemblies 4 are connected by a connecting plate 5. The extension plate assembly 4 includes a sliding side plate 41, a guide rail 42, a rotating door 44 and a privacy curtain 45. Guide rails 42 are connected to the upper and lower ends of the left and right sides of the U-shaped back plate 2. Two guide grooves 43 are provided on the side of each sliding side plate 41 facing the U-shaped back plate 2. The two guide grooves 43 are respectively in sliding fit with the two guide rails 42 on the same side. The sliding side plate 41 is slidably connected to the U-shaped back plate 2 through the guide rail 42 and the guide groove 43. Grooves for accommodating the rotating door 44 are provided on the opposite sides of the two sliding side plates 41. The upper and lower sides of the front end of the rotating door 44 are rotatably connected to the front end of the sliding side plate 41. A bolt (not shown in the figure) is installed on the back surface between the two rotating doors 44, which is convenient for the user to fix the two rotating doors 44 through the bolt inside the toilet. Sealing strips are connected to the opposite sides of the two rotating doors 44 in the closed state, which is used to enhance the privacy of the rotating door 44 in the closed state. Handle grooves 17 are provided on the front and rear sides of the rotating door 44. The handle grooves 17 on both sides are arranged up and down in a staggered manner, which is convenient for pulling the rotating door 44 through the handle grooves 17. Privacy curtains 45 are connected to the opposite sides of the two sliding side plates 41. An expansion mechanism 6 for pushing the extension plate assembly 4 forward is installed on the U-shaped back plate 2. By pushing the extension plate assembly 4 forward through the expansion mechanism 6, the space of this toilet can be enlarged, which is convenient for the user to use the toilet or take a shower in this toilet. The bottom of the bottom plate module 1 is connected to a sewage pipe 7. An adjustable base 8 is provided at the top of the sewage pipe 7. A toilet 9 is installed on the top of the adjustable base 8. The toilet 9 is located directly below the washbasin 3. The adjustable base 8 allows the position of the toilet 9 to be adjusted. The toilet 9 can be moved out or retracted from below the washbasin 3 through the adjustable base 8, so as to optimize the space utilization and use convenience. The drain pipe of the washbasin is connected and communicated with the sewage pipe 7 through a pipeline. The feces discharged from the toilet 9 and the wastewater discharged from the washbasin are discharged through the sewage pipe 7.

[0029] As Figures 3-4As shown, the expansion mechanism 6 includes a U-shaped swing rod 61, a guide shaft 62, a connecting rod 64, and an electric push rod 65. The lower part of the U-shaped back plate 2 is rotatably connected to the U-shaped swing rod 61. The U-shaped swing rod 61 is located below the washbasin 3. The two ends of the U-shaped swing rod 61 respectively penetrate through the left and right sides of the U-shaped swing rod 61. Both ends of the U-shaped swing rod 61 are connected with a guide shaft 62. Vertical grooves 63 are respectively formed in the middle of the rear sides of the two sliding side plates 41. The two guide shafts 62 are respectively located in the two vertical grooves 63. Two connecting rods 64 are connected to the U-shaped swing rod 61 located inside the U-shaped back plate 2. The two connecting rods 64 are symmetric left and right. One end of the connecting rod 64 far from the U-shaped swing rod 61 is hinged to the bottom of the washbasin 3 with an electric push rod 65.

[0030] As Figure 2 and Figure 8 shown, it further includes a limit component 11. The limit component 11 includes a magnetic adsorption limit block 111 and an iron block 112. The magnetic adsorption limit block 111 is connected to the middle of the bottom of the connecting plate 5. Iron blocks 112 are respectively connected to the top ends of the opposite sides of the two rotating doors 44. The front side of the iron block 112 contacts the rear side of the magnetic adsorption limit block 111. When the two rotating doors 44 are closed, the magnetic adsorption limit block 111 blocks the iron block 112 to prevent the rotating doors 44 from rotating excessively. Moreover, the magnetic adsorption limit block 111 can adsorb and fix the iron block 112. The adsorption force is designed to be easily overcome by human force, enabling users to easily push open the rotating doors 44.

[0031] The floor module 1 is embedded in the vehicle floor, and the upper end surface of the floor module 1 is 3 mm - 5 mm lower than the vehicle floor, facilitating the drainage of water during showering. When the bathroom shower or toilet use is not required, the expansion mechanism 6 and the expansion plate assembly 4 are both in the initial state (as Figure 1As shown in the figure, the wash basin 3 can be used normally. Since the expansion plate assembly 4 is not unfolded, the occupied space can be reduced, thereby freeing up more activity area in the car and making it more convenient to wash. The waste water during washing flows to the sewage pipe 7 through the pipeline and is finally discharged through the rear sewage pipe 7. When the toilet needs to be used for toilet or shower, the expansion plate assembly 4 is in the unfolded state, and the internal space of the toilet is not enough. The user can push the expansion plate assembly 4 forward by operating the expansion mechanism 6, thereby expanding the space of the toilet. The electric push rod 65 is started to extend and push the connecting rod 64 to swing downward, and the U-shaped swing rod 61 swings forward and downward accordingly, driving the sliding side plate 41 to move forward through the guide shaft 62. The sliding side plate 41 realizes smooth sliding through the cooperation of the guide groove 43 and the guide rail 42, and the revolving door 44 and the connecting plate 5 also move forward. Pull the revolving door 44 out of the groove, the privacy curtain 45 blocks the sliding side plate 41, and the opening and closing operation is conveniently performed through the handle groove 17. When the two revolving doors 44 are closed, the sealing strip between them enhances privacy, and the design of the magnetic stopper 111 and the iron block 112 ensures that the revolving door 44 will not rotate excessively and maintain a stable closed state. Initially, the length direction of the toilet 9 is consistent with the length direction of the wash basin 3, and the toilet 9 is stored under the wash basin 3. When you need to use the toilet, turn the adjustable base 8 so that the adjustable base 8 and the toilet 9 rotate clockwise 90 degrees, so that the seat of the toilet 9 extends out of the front side of the wash basin 3, and the user can use it conveniently. After use, turn the adjustable base 8 and the toilet 9 counterclockwise 90 degrees to reset it. Turn the revolving door 44 to rotate it into the groove, then start the electric push rod 65 to retract, drive the U-shaped swing rod 61 to swing backward and upward through the connecting rod 64, drive the sliding side plate 41 and the revolving door 44 to move backward through the guide shaft 62, and retract the expansion plate assembly 4.

[0032] like Figure 3 , Figure 5 , Figure 6 and Figure 7As shown in the figure, the adjustable base 8 includes a connecting sleeve 81, a rotating seat 82, a fixing ring 84, a toothless worm gear 85, a servo motor 86, a worm 87 and a gear 88. The top of the rear side of the bottom plate module 1 is fixedly connected with a connecting sleeve 81. The upper end of the sewage pipe 7 is connected to the inner side of the lower end of the connecting sleeve 81. The connecting sleeve 81 is internally communicated with the sewage pipe 7. The top of the rotating seat 82 is provided with a limiting groove adapted to the bottom of the toilet 9. The rotating seat 82 and the toilet 9 are fixed by structural adhesive. A through hole 83 is provided at a position corresponding to the defecation port of the toilet 9 on the rotating seat 82. The rotating seat 82 is hermetically sleeved outside the connecting sleeve 81 through the through hole 83. The defecation port of the toilet 9 is inserted into the upper part of the connecting sleeve 81. A sealing rubber sleeve is provided in the upper part of the connecting sleeve 81 to enhance the sealing between the defecation port of the toilet 9 and the connecting sleeve 81 and prevent leakage. The toilet 9 and the rotating seat 82 can rotate circumferentially around the connecting sleeve 81. A servo motor 86 is fixedly installed on the outer wall of the lower part of the connecting sleeve 81 through a mounting plate. The worm 87 is rotatably installed on the mounting plate. A gear 88 is connected to one end of the worm 87 and the output shaft of the servo motor 86 respectively. A fixing ring 84 is connected to the outside of the through hole 83 at the bottom of the rotating seat 82. The fixing ring 84 is located outside the connecting sleeve 81 and the sewage pipe 7. A toothless worm gear 85 meshing with the worm 87 is connected to the outer wall of the fixing ring 84. When the servo motor 86 is started, the worm 87 is driven to rotate through the two gears 88, and the worm 87 drives the toothless worm gear 85 to rotate, and then the rotating seat 82 is moved out from under the washbasin 3 or retracted.

[0033] As Figure 5 and Figure 6 shown, it further includes support wheels 15 and a brush 16. Seven support wheels 15 are circumferentially and spacedly installed at the bottom of the rotating seat 82. The support wheels 15 are universal wheels. The support wheels 15 are in contact with the top of the bottom plate module 1. A brush 16 is circumferentially connected to the outer side of the lower part of the rotating seat 82. The lower end of the brush 16 is in contact with the top of the bottom plate module 1.

[0034] When the toilet 9 needs to rotate, the servo motor 86 is started to drive the worm 87 to rotate through the two gears 88, and the worm 87 drives the toothless worm gear 85 to rotate, so that the rotating seat 82 together with the toilet 9 rotates circumferentially around the connecting sleeve 81, thereby realizing the movement out or retraction of the toilet 9 from under the washbasin 3. This design not only optimizes the space utilization but also improves the convenience of use. By starting the forward and reverse rotation of the servo motor 86 to control the rotation direction of the toilet 9, the maximum rotation angle of the toilet 9 is not greater than 120 degrees. Seven support wheels 15 in the form of universal wheels are installed at the bottom of the rotating seat 82. These support wheels 15 are in contact with the top of the bottom plate module 1, providing stable support for the toilet 9 and facilitating the rotation of the rotating seat 82. The brush 16 is arranged on the outer side of the lower part of the rotating seat 82, and its lower end is in contact with the top of the bottom plate module 1, playing a cleaning role during the rotation process, ensuring the cleanliness of the bathroom, and preventing sundries from entering the bottom of the rotating seat 82, avoiding the support wheels 15 being crushed by sundries when the rotating seat 82 rotates.

[0035] Second Embodiment: On the basis of the first embodiment, as Figure 1 and Figure 9 shown, a shower mechanism 12 is further introduced to enhance the versatility and usability of the bathroom. The shower mechanism 12 includes a first moving pair 121, a water tank 122, a lid 124, a booster pump 125, a shower head 126, and a lifting mechanism 127. The first moving pairs 121 are inclinedly installed on the inner walls of the left and right sides of the U-shaped back plate 2. The installation method of the first moving pair 121 is that the upper end inclines backward and the lower end inclines forward. A water tank 122 is connected between the moving parts of the two first moving pairs 121. The outer wall of the water tank 122 is provided with a heat-insulating layer. An avoidance groove 123 is provided in the middle of the water tank 122. A lid 124 is threadedly connected to the upper left part of the water tank 122. A booster pump 125 is installed at the lower right part of the water tank 122. The booster pump 125 is communicated with the inside of the water tank 122 through a pipeline. The water outlet end of the booster pump 125 is connected with a shower head 126 through a hose. A lifting mechanism 127 is installed on the upper part of the U-shaped back plate 2. The lifting mechanism 127 is connected to the top of the water tank 122 and is used to drive the water tank 122 to move up and down.

[0036] As Figure 10 shown, the lifting mechanism 127 includes a winch 1271, a slide rail 1272, a sliding frame 1273, and a limiting wheel 1274. The winch 1271 and the slide rail 1272 are both fixedly installed on the upper part of the U-shaped back plate 2. The slide rail 1272 is located below the winding wheel of the winch 1271. A sliding frame 1273 is slidably connected to the slide rail 1272. The sliding frame 1273 can move left and right on the slide rail 1272. Two limiting wheels 1274 are rotatably connected to the sliding frame 1273. The lower end of the steel wire rope of the winch 1271 passes between the two limiting wheels 1274 and is connected to the top of the water tank 122.

[0037] The water tank 122 is fixed on the inner wall of the U-shaped back plate 2 through the first moving pair 121 and can move up and down with the moving part to adjust the height. Since the first moving pair 121 is inclined, when the water tank 122 moves downward, it also moves forward synchronously, so that it is located above the front side of the washbasin 3, which is convenient for the user to open the lid 124 and add clear water for shower into the water tank 122. The booster pump 125 pumps the water in the water tank 122 through a pipeline and conveys it to the shower head 126 through a hose, which can be conveniently used for shower. When the water tank 122 moves downward, the winch 1271 of the lifting mechanism 127 is rotated clockwise to release the steel wire rope, and the water tank 122 slides downward along the first moving pair 121. When the winch 1271 is rotated counterclockwise to wind the steel wire rope, the water tank 122 is pulled to move backward and upward. When the steel wire rope is wound, the position where the winding wheel of the winch 1271 winds around will change, and the sliding frame 1273 will move left and right adaptively on the slide rail 1272. The limiting wheel 1274 is used to limit and guide the steel wire rope to prevent the steel wire rope from rubbing against other components.

[0038] As Figure 1 and Figure 11 shown, it further includes a shower support assembly 13. The shower support assembly 13 includes a second moving pair 131, a cross bar 132, a sliding rod 133 and a shower seat 134. Second moving pairs 131 are installed on the left and right sides of the inner wall of the U-shaped back plate 2. The second moving pairs 131 are located above the first moving pairs 121. The two second moving pairs 131 are respectively parallel to the two first moving pairs 121. A cross bar 132 is connected between the moving parts of the two second moving pairs 131. A sliding rod 133 perpendicular to the cross bar 132 is rotatably connected to the middle of the cross bar 132. A shower seat 134 is installed on the sliding rod 133. The shower head 126 is placed on the shower seat 134. Both the sliding rod 133 and the shower seat 134 are located in the avoidance groove 123. A damping structure is provided between the sliding rod 133 and the shower seat 134 to control the speed of the shower seat 134 moving along the sliding rod 133, so that the user can more accurately adjust the height of the shower head 126 and prevent the shower head 126 from sliding down rapidly due to an accident.

[0039] As Figure 11 shown, it further includes a permanent magnet 14. A permanent magnet 14 is installed on the upper part of the second moving pair 131. The moving part of the second moving pair 131 is made of a material that can be attracted by the permanent magnet 14.

[0040] Initially, the moving part of the second moving pair 131 is located at the uppermost position and is magnetically adsorbed by the permanent magnet 14, which can make the moving part stay stably in this position and avoid unnecessary movement. When taking a shower, the user can pull the sliding rod 133 downward to overcome the attraction of the permanent magnet 14, and the moving part of the second moving pair 131 and the cross bar 132 move downward, so that the moving part of the second moving pair 131 moves to the lowermost position. Then adjust the height of the sliding rod 133 and the shower seat 134. The existence of the damping structure enables the user to more accurately control the moving speed of the shower seat 134 along the sliding rod 133 and prevent the shower head 126 from sliding down rapidly due to an accident.

[0041] As Figure 1 shown, it further includes a grille plate 10. A drainage groove is provided on the front side of the top of the bottom plate module 1. The drainage groove is communicated with the sewage pipe 7 through a pipeline. A grille plate 10 is detachably provided in the drainage groove. The top of the grille plate 10 is coplanar with the top of the bottom plate module 1.

[0042] The drainage groove on the bottom plate module 1 is covered by the grille plate 10, and the grille plate 10 is detachable for easy cleaning. The drainage groove is directly connected to the sewage pipe 7 through a pipeline, ensuring that the waste water overflowing from the washbasin on the washstand 3 and the sewage generated by showering can be smoothly discharged into the sewage pipe 7, maintaining the dryness and cleanliness of the internal environment of the bathroom.

[0043] The above are only examples of the present invention and are not intended to limit the present invention. Any equivalent replacement made within the principles of the present invention shall be included within the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the prior art well-known to those skilled in the art.

Claims

1. A hidden toilet structure for a motorhome, comprising a base module (1), a U-shaped back panel (2) and a washbasin (3), wherein the rear side of the base module (1) is connected to the U-shaped back panel (2), and the washbasin (3) is arranged inside the U-shaped back panel (2), characterized in that: The invention also comprises a component (4), a connecting plate (5), an expansion mechanism (6), a sewage pipe (7), an adjustable base (8) and a toilet (9). The expansion plate components (4) are installed on both the left and right sides of the U-shaped back panel (2). The two expansion plate components (4) are connected via the connecting plate (5). The expansion plate components (4) comprise a sliding side panel (41), a revolving door (44) and a privacy curtain (45). The sliding side panels (41) are installed on both the left and right sides of the U-shaped back panel (2). The two sides of the sliding side panels (41) facing each other are rotatably connected. There is a revolving door (44), the privacy curtain (45) is connected to the back side of the two sliding side panels (41), the expansion mechanism (6) for pushing the expansion panel assembly (4) forward is installed on the U-shaped back panel (2), the drainage pipe (7) is connected to the bottom panel module (1), the adjustable base (8) is provided on the top of the drainage pipe (7), the toilet (9) is installed on the top of the adjustable base (8), and the toilet (9) can be moved out from under the washbasin (3) or stored back through the adjustable base (8).

2. A hidden toilet structure for a motorhome as claimed in claim 1, characterized in that: The expansion mechanism (6) comprises a U-shaped swing arm (61), a guide shaft (62), a connecting rod (64) and an electric push rod (65); the U-shaped back plate (2) is movably connected to the U-shaped swing arm (61); the end of the U-shaped swing arm (61) is connected to the guide shaft (62); the sliding side plates (41) are each provided with a vertical groove (63); the guide shaft (62) is located in the vertical groove (63); the U-shaped swing arm (61) is connected to the connecting rod (64); and the electric push rod (65) is hingedly connected between one end of the connecting rod (64) away from the U-shaped swing arm (61) and the wash basin (3).

3. A hidden toilet structure for a motorhome as claimed in claim 2, characterized in that: The adjustable base (8) comprises a connecting sleeve (81), a rotating seat (82), a fixing ring (84), a toothless worm wheel (85), a servo motor (86) and a worm (87); the connecting sleeve (81) is fixedly connected to the top of the base plate module (1); the sewage discharge pipe (7) is connected to and communicates with the connecting sleeve (81); a sealing sleeve of the rotating seat (82) is arranged on the outside of the connecting sleeve (81); a defecation outlet of the toilet (9) is located above the connecting sleeve (81); the toilet (9) and the rotating seat (82) can rotate around the connecting sleeve (81); the servo motor (86) and the worm (87) are mounted on the connecting sleeve (81); the worm (87) and the servo motor (86) are in transmission connection; the toothless worm wheel (85) meshing with the worm (87) is connected to the bottom of the rotating seat (82) through a fixing ring (84).

4. A hidden toilet structure for a motorhome as claimed in claim 3, characterized in that: It also comprises a limit assembly (11), the limit assembly (11) comprising a magnetic limit block (111) and an iron block (112), the bottom of the connecting plate (5) being connected to the magnetic limit block (111), the top of the revolving door (44) being connected to the iron block (112), and the iron block (112) being in contact with the magnetic limit block (111).

5. A hidden toilet structure for a motorhome as claimed in claim 4, characterized in that: The invention also comprises a shower mechanism (12), the shower mechanism (12) comprising a first moving pair (121), a water tank (122), a cover (124), a booster pump (125), a shower head (126) and a lifting mechanism (127); the first moving pair (121) is obliquely mounted on the U-shaped back plate (2); the moving part of the first moving pair (121) is connected to the water tank (122); the cover (124) is connected to the water tank (122); the booster pump (125) is mounted on the water tank (122); the booster pump (125) is communicated with the inside of the water tank (122); the water outlet end of the booster pump (125) is connected to the shower head (126); the lifting mechanism (127) is mounted on the upper part of the U-shaped back plate (2); the lifting mechanism (127) is connected to the top of the water tank (122) and is used to drive the water tank (122) to move up and down.

6. A hidden toilet structure for a motorhome as claimed in claim 5, characterized in that: The invention also comprises a shower support assembly (13), wherein the shower support assembly (13) comprises a second movable pair (131), a cross bar (132), a sliding rod (133) and a shower seat (134); the second movable pair (131) is mounted on the U-shaped back plate (2); the movable part of the second movable pair (131) is connected to the cross bar (132); the sliding rod (133) is rotatably connected to the cross bar (132); and the shower seat (134) for placing a shower head (126) is mounted on the sliding rod (133).

7. A hidden toilet structure for a motorhome as claimed in claim 6, characterized in that: It also comprises a support wheel (15) and a brush (16); the support wheel (15) is mounted on the bottom of the rotating seat (82); the support wheel (15) is in contact with the top of the base plate module (1); the brush (16) is connected to the lower part of the rotating seat (82); the lower end of the brush (16) is in contact with the top of the base plate module (1).

8. A hidden toilet structure for a motorhome as claimed in claim 7, characterized in that: It also comprises a grille plate (10), wherein a drainage groove is provided on the top front side of the bottom plate module (1), and the grille plate (10) is detachably provided in the drainage groove.

9. A hidden toilet structure for a motorhome as claimed in claim 8, characterized in that: It also includes a permanent magnet (14), the permanent magnet (14) being mounted on the upper part of the second movable pair (131), and the movable part of the second movable pair (131) is made of a material that can be attracted by the permanent magnet (14).

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