Host and its belonging nursing machine

Abstract

A kind of nursing machine, including host computer, host computer is equipped with shell, provide the negative pressure source of suction human excretion dirt power, sewage tank containing dirt suctioned by negative pressure source, negative pressure source, sewage tank is located in shell, negative pressure source is located downstream of sewage tank, sewage tank is equipped with first electric probe, second electric probe, first electric probe and second electric probe are used as a pair of combination for monitoring the water level of sewage in sewage tank, after the water level of sewage in sewage tank reaches first water level, first electric probe and second electric probe are electrically connected under the electrically conductive connection of sewage in sewage tank.The conductivity of sewage collected in sewage tank as a kind of conductive medium, after the water level of sewage in sewage tank reaches first water level, first electric probe and second electric probe are electrically connected under the electrically conductive connection of sewage in sewage tank, the scheme is simple and practical.

Description

[Technical Field]

[0001] This patent application relates to a main unit and its associated nursing machine, particularly to a sewage level monitoring configuration for the sewage tank of the nursing machine main unit. [Background Technology]

[0002] A nursing care machine, as a device used to process human waste, is primarily designed for individuals unable to manage their own bodily functions. It receives waste and cleans the excretory area, reducing the burden on caregivers and the patient's discomfort. Existing nursing care machines mainly consist of a wearable waste collection device (often called a working head in the nursing care machine field), a main unit, and a water supply pipe and a suction pipe connected to the main unit. The waste collection device has a urinal to receive waste, while the main unit typically includes a negative pressure source to provide suction power, a wastewater tank to hold the waste, and a lifting mechanism. The flushing tank contains clean water. When in use, the toilet is worn under the body. After the body defecates, the main unit supplies water through the water supply pipe to flush the excretory parts, toilet bowl, and excrement. The flushing process begins almost simultaneously with the negative pressure source suction. The sewage carrying the excrement in the toilet bowl is transported to the main unit through the suction pipe along with the suction airflow and stored in the sewage tank. Since the capacity of the sewage tank is limited, it is necessary to monitor the sewage level in the sewage tank so that the sewage tank can be removed and emptied in time when the sewage level rises to a certain level. [Summary of the Invention]

[0003] This patent application provides a main unit for a nursing machine, which has a simple and practical configuration for monitoring the sewage level in the sewage tank.

[0004] A main unit for a nursing machine includes a housing, a negative pressure source that provides power for suctioning human excrement, and a wastewater tank that holds the waste suctioned by the negative pressure source. The negative pressure source and the wastewater tank are located inside the housing, with the negative pressure source located downstream of the wastewater tank. The wastewater tank is equipped with a first conductive probe and a second conductive probe. The first and second conductive probes are used as a pair to monitor the water level of the wastewater in the wastewater tank. When the wastewater in the wastewater tank reaches a first water level, the first and second conductive probes are electrically connected due to the conductive connection of the wastewater in the wastewater tank.

[0005] This design utilizes the conductivity of the sewage collected in the sewage tank as a conductive medium. When the sewage in the tank reaches the first water level, the first and second conductive probes become electrically connected due to the conductive connection of the sewage in the tank. The electrical connection between the first and second conductive probes corresponds to the sewage in the tank reaching the first water level. This solution is relatively simple and practical.

[0006] Optionally, the sewage tank is also equipped with a third conductive probe. The first conductive probe and the third conductive probe are used as a pair to monitor the water level of the sewage in the sewage tank. When the sewage in the sewage tank reaches the second water level, the first conductive probe and the third conductive probe are electrically connected due to the conductive connection of the sewage in the sewage tank. The second water level is higher than the first water level.

[0007] Optionally, after the sewage in the sewage tank reaches the first water level, the first conductive probe and the second conductive probe are respectively at least partially immersed in the sewage in the sewage tank, thereby being electrically connected by the conductive connection of the sewage in the sewage tank; after the sewage in the sewage tank reaches the second water level, the first conductive probe and the third conductive probe are respectively at least partially immersed in the sewage in the sewage tank, thereby being electrically connected by the conductive connection of the sewage in the sewage tank.

[0008] Optionally, the sewage tank is provided with a first side wall, a second side wall, a third side wall, and a fourth side wall. The first side wall and the second side wall are spaced apart and opposite to each other, the third side wall and the fourth side wall are spaced apart and opposite to each other, the third side wall is connected between one side of the first side wall and one side of the second side wall, and the fourth side wall is connected between the opposite side of the first side wall and the opposite side of the second side wall. A first conductive probe is provided on the first side wall, and a second conductive probe and a third conductive probe are provided on the second side wall.

[0009] Optionally, the second sidewall is provided with a first rib and a second rib, the first rib and the second rib are spaced apart, the first rib and the second rib are respectively located on the inner side of the second sidewall, the third conductive probe is provided on the first rib, and the second conductive probe is provided on the second rib.

[0010] Optionally, the first sidewall and the second sidewall are spaced apart front to back, the third sidewall and the fourth sidewall are spaced apart left to right, the second conductive probe and the third conductive probe are staggered in both the front-back direction and the left-right direction, and the first rib and the second rib extend in the vertical direction respectively.

[0011] Optionally, the sewage tank also includes a first bottom wall, a top cover, and a connecting device. The top cover and the first bottom wall are spaced apart vertically. The lower ends of the first, second, third, and fourth side walls are connected to the first bottom wall. The port formed by the upper ends of the first, second, third, and fourth side walls is covered by the top cover. The connecting device is detachably installed on the top cover. The connecting device includes a sewage inlet pipe and an airflow outlet pipe. One end of the sewage inlet pipe and one end of the airflow outlet pipe are directly fluidly connected to the interior of the sewage tank. The airflow outlet pipe is located upstream of the negative pressure source and downstream of the sewage inlet pipe. Under the suction of the negative pressure source, the sewage drawn in is discharged into the sewage tank through the sewage inlet pipe and the suction airflow formed under the suction of the negative pressure source flows out of the sewage tank through the airflow outlet pipe and flows towards the negative pressure source. The sewage inlet pipe is close to the first side wall and away from the second side wall.

[0012] Optionally, the wastewater tank is also equipped with a first handle and a second handle. The top cover is provided with a connection port, and a connecting device is detachably installed on the connection port. The connection port is close to the first side wall and away from the second side wall, and the connection port can be used as a wastewater dumping port. The first handle is provided on the top cover and can be used to lift the wastewater tank. The first handle is located on the side of the connection port away from the first side wall and close to the second side wall. The second handle is formed at the end of the first bottom wall close to the second side wall. The first bottom wall is provided with a recess corresponding to the second handle, which is concave upward from the bottom side of the first bottom wall, and the fingers can be accommodated in the recess when a person holds the second handle.

[0013] Optionally, the main unit also includes a first tank, in which the sewage tank is at least partially housed. The upper end of the first tank is an opening for the sewage tank to be placed downwards into the first tank. The lower end of the first tank is provided with a second bottom wall corresponding to the first bottom wall. The second bottom wall is provided with an upwardly protruding bulge that matches and is housed in a recess.

[0014] Optionally, the third conductive probe is positioned higher than the second and first conductive probes. The wastewater tank is also equipped with a fourth conductive probe, which is located on the first side wall. The position of the fourth conductive probe is not lower than the positions of the first and second conductive probes and not higher than the position of the third conductive probe. The main unit is also equipped with a first conductive spring for elastically pressing against the first conductive probe and electrically connecting to it, and a fourth conductive spring for elastically pressing against the fourth conductive probe and electrically connecting to it. The first and fourth conductive springs are spaced apart and short-circuited. Thus, when the first and fourth conductive probes are electrically connected, they are also short-circuited.

[0015] Optionally, the first conductive probe and the second conductive probe are at the same height, and the third conductive probe and the fourth conductive probe are at the same height.

[0016] Optionally, the first sidewall is provided with at least one protruding rib, the at least one protruding rib being provided on the inner side of the first sidewall, and the first conductive probe and the fourth conductive probe being provided on the at least one protruding rib.

[0017] Optionally, the at least one rib includes a third rib extending in the vertical direction, and the first conductive probe and the fourth conductive probe are disposed on the third rib, with the first conductive probe located below the fourth conductive probe.

[0018] Optionally, the main unit also includes a first cable component electrically connected to the first conductive spring and a fourth cable component electrically connected to the fourth conductive spring. The first cable component and the fourth cable component are directly electrically connected together so that the first conductive spring and the fourth conductive spring are short-circuited.

[0019] Optionally, the wastewater tank has a first sidewall and a second sidewall, which are spaced apart and opposite to each other. A first conductive probe is disposed on the first sidewall, and a second conductive probe is disposed on the second sidewall. The main unit also has a first conductive spring and a second conductive spring. The first conductive probe has a first screw and a first conductive end cap. The first screw passes through the first sidewall and is screwed together with the first conductive end cap. The first conductive end cap is located on the inner side of the first sidewall for contact with the wastewater in the wastewater tank. The first conductive spring is located on the outer side of the first sidewall and elastically presses against the first screw to electrically connect with the first conductive probe. The second conductive probe has a second screw... A nail, a second conductive end cap, and a second screw penetrate the second sidewall and are screwed together with the second conductive end cap. The second conductive end cap is located on the inner side of the second sidewall to allow contact with the sewage in the sewage tank. A second conductive spring is located on the outer side of the second sidewall and elastically presses against the second screw to electrically connect with the second conductive probe. After the sewage in the sewage tank reaches the first water level, the first conductive end cap and the second conductive end cap are respectively at least partially immersed in the sewage in the sewage tank, thereby being electrically connected under the conductive connection of the sewage in the sewage tank. Thus, the first conductive probe and the second conductive probe are electrically connected under the conductive connection of the sewage in the sewage tank.

[0020] Optionally, the wastewater tank is also equipped with a third conductive probe, which is positioned higher than the positions of the second and first conductive probes. The third conductive probe has a third screw and a third conductive end cap. The third screw penetrates the second sidewall and is screwed together with the third conductive end cap. The third conductive end cap is located on the inner side of the second sidewall to allow contact with the wastewater in the wastewater tank. After the wastewater in the wastewater tank reaches the second water level, the first and third conductive end caps are at least partially immersed in the wastewater in the wastewater tank, thus becoming electrically connected due to the conductive connection of the wastewater in the wastewater tank. Consequently, the first and third conductive probes are electrically connected due to the conductive connection of the wastewater in the wastewater tank. The second water level is higher than the first water level.

[0021] Optionally, the first screw has a first stud integrally connected to the first large end of the first stud. The first stud passes through the second sidewall and is screwed together with the first conductive cap. The first large end is located at the end of the first screw away from the first conductive cap. A first conductive spring elastically presses against the first large end. The sewage tank also has a first sealing ring, which is fitted on the first stud and pressed between the first large end and the first sidewall. The second screw has a second stud integrally connected to the second large end of the second stud. The second stud passes through the second sidewall and is screwed together with the second conductive cap. The second large end is located at the end of the second screw away from the second conductive cap. A second conductive spring elastically presses against the second large end. The sewage tank also has a second sealing ring, which is fitted on the second stud and pressed between the second large end and the second sidewall.

[0022] Optionally, the main unit also includes a first tank and a first conductive spring. The sewage tank is at least partially housed in the first tank. The upper end of the first tank is an opening for the sewage tank to be placed downward into the first tank. The first tank is provided with a first port. The first conductive spring is installed in the first tank. A portion of the first conductive spring protrudes into the first tank through the first port and elastically presses against the first conductive probe to be electrically connected to the first conductive probe.

[0023] Optionally, as the sewage tank is lowered into the first barrel, the first conductive probe moves down to the position of the corresponding first conductive spring and is abutted by the first conductive spring.

[0024] Optionally, the sewage tank is provided with a first side wall, the first conductive probe is provided on the first side wall, the first tank body is provided with a fifth side wall corresponding to the first side wall, the first opening is opened on the fifth side wall, the main unit is also provided with a fifth screw, the first conductive spring is locked to the fifth side wall by means of the fifth screw, the fifth side wall is also provided with a first frame portion that frames the first conductive spring portion, the first frame portion is located on the outside of the fifth side wall.

[0025] Optionally, the main unit also includes a first cable component that is electrically connected to the first conductive spring, and the first frame portion has a first clearance notch for the connection of the first cable component to pass through.

[0026] Optionally, the first cable component includes a first wire and a first terminal connected to the first wire. The first terminal is locked by a fifth screw, and the pins of the first terminal are directly connected to the first wire. The pins of the first terminal and / or the first wire pass through a first clearance notch.

[0027] Optionally, the sewage tank is provided with a second sidewall, the second sidewalls are spaced apart and opposite each other, the second conductive probe is provided on the second sidewall, the main unit is also provided with a second conductive spring, a sixth screw, and a second cable connecting the second conductive spring, the first tank is also provided with a sixth sidewall corresponding to the second sidewall, the sewage tank is located between the fifth sidewall and the sixth sidewall, the sixth sidewall is provided with a second opening, a part of the second conductive spring protrudes into the first tank through the second opening and elastically presses against the second conductive probe to electrically connect with the second conductive probe, the second conductive spring is locked to the sixth sidewall by the sixth screw, the sixth sidewall is also provided with a second frame portion that frames the second conductive spring portion, the second frame portion is located on the outside of the sixth sidewall.

[0028] Optionally, the fifth sidewall is also provided with a first locking screw post, which is surrounded by the first frame portion. The fifth screw is screwed into the first locking screw post to lock the first terminal block and the first conductive spring together.

[0029] Optionally, the wastewater tank is also equipped with a third conductive probe, and the main unit is also equipped with a frame, a second tank, and a clean water tank. The clean water tank is at least partially housed in the second tank. The upper end of the second tank has an opening for the clean water tank to be placed downwards into the second tank. The frame is located above the first and second tanks, and the frame has a first frame opening corresponding to the upper side of the first tank and a second frame opening corresponding to the upper side of the second tank. The wastewater tank is placed downwards into the first tank through the first frame opening and is partially housed within it. The clean water tank is placed downwards into the second tank through the second frame opening. The middle part is accommodated in the second frame opening; the main unit is also provided with a second conductive spring and a third conductive spring. The second conductive spring is installed in the first barrel, and the third conductive spring is installed in the frame member. The first barrel is also provided with a second opening. A part of the second conductive spring protrudes into the first barrel through the second opening and elastically presses against the second conductive probe to be electrically connected with the second conductive probe. The frame member is also provided with a third opening. A part of the third conductive spring protrudes into the first frame opening through the third opening and elastically presses against the third conductive probe to be electrically connected with the third conductive probe.

[0030] Optionally, as the sewage tank is lowered into the first barrel, the second conductive probe moves down to the position corresponding to the second conductive spring and is abutted by the second conductive spring, and the third conductive probe moves down to the position corresponding to the third conductive spring and is abutted by the third conductive spring.

[0031] Optionally, the sewage tank has a first sidewall and a second sidewall spaced apart from each other. The sewage tank also has a fourth conductive probe. The first and fourth conductive probes are located on the first sidewall, and the second and third conductive probes are located on the second sidewall. The first tank body also has a fifth sidewall corresponding to the first sidewall and a sixth sidewall corresponding to the second sidewall. The fifth and sixth sidewalls are located on opposite sides of the first tank body. The first opening is opened on the fifth sidewall, and the second opening is opened on the sixth sidewall. The frame member has a seventh sidewall located above the sixth sidewall and an eighth sidewall located above the fifth sidewall. The seventh sidewall is vertically connected to the sixth sidewall, and the eighth sidewall is vertically connected to the fifth sidewall. The seventh and eighth sidewalls are located on opposite sides of the first frame opening, and the third opening is opened on the seventh sidewall. The main unit also has a fourth conductive spring piece, which is installed on the eighth sidewall. The eighth sidewall has a fourth opening. A portion of the fourth conductive spring piece protrudes into the first frame opening through the fourth opening and elastically presses against the fourth conductive probe to electrically connect with the fourth conductive probe.

[0032] Optionally, the main unit also includes a seventh screw, an eighth screw, a third cable connecting the third conductive spring, and a fourth cable connecting the fourth conductive spring. The third conductive spring is locked to the seventh side wall by the seventh screw, and the fourth conductive spring is locked to the eighth side wall by the eighth screw. The seventh side wall also has a third frame portion that frames the third conductive spring. The third frame portion is located on the outside of the seventh side wall and has a third clearance notch for the third cable to pass through. The eighth side wall also has a fourth frame portion that frames the fourth conductive spring. The fourth frame portion is located on the outside of the eighth side wall and has a fourth clearance notch for the fourth cable to pass through. As the sewage tank is lowered into the first tank, the fourth conductive probe moves down to the position corresponding to the fourth conductive spring and is abutted by the fourth conductive spring.

[0033] Optionally, the main unit also includes a clean water tank located inside the outer casing. The clean water tank and wastewater tank are arranged side by side at the rear of the main unit. The outer casing has a flip cover located on the top side of the outer casing, covering the clean water tank and wastewater tank. The flip cover can be flipped open to expose the clean water tank and wastewater tank so that they can be removed upwards. The flip cover has a third handle located at the rear end of the flip cover, which can be held to flip the flip cover upwards. The main unit also includes a touch screen display screen, which is fixed to the top of the outer casing and located in front of the flip cover.

[0034] This patent application also provides a nursing machine, including the aforementioned main unit.

[0035] Optionally, the care unit also includes a wearable toilet to receive human waste, a suction pipe connecting the main unit and the toilet, and a water supply pipe connecting the main unit and the toilet. The toilet has a bowl to hold human waste, and the waste tank is also equipped with a connecting device. The connecting device has a waste inlet pipe and an airflow outlet pipe. The frame has a first adapter pipe and a second adapter pipe, which are connected to the connecting device. The main unit also has a first connecting pipe that supplies fluid between the first adapter pipe and the suction pipe, and a second connecting pipe that supplies fluid between the second adapter pipe and the negative pressure source. Under the suction of the negative pressure source, the waste in the toilet is transported to the waste tank in sequence through the suction pipe, the first connecting pipe, the first adapter pipe, and the waste inlet pipe. The suction airflow formed under the suction of the negative pressure source flows out of the waste tank through the airflow outlet pipe and flows to the negative pressure source in sequence through the second adapter pipe and the second connecting pipe. [Attached Image Description]

[0036] Figure 1 This is a perspective view of the main unit of the nursing machine in this patent application;

[0037] Figure 2 This is a perspective view of the nursing machine main unit of this patent application, excluding the clean water tank, wastewater tank, flip cover, push-pull rod, etc.

[0038] Figure 3 This is a perspective view of the nursing machine main unit of this patent application, with the outer shell removed (the chassis with the outer shell retained), push-pull rods, etc.

[0039] Figure 4 This is a perspective view of the nursing machine main unit of this patent application, with the outer shell removed (the chassis and back cover of the outer shell are retained), wastewater tank, push-pull rod, etc.

[0040] Figure 5 This is a perspective view of the nursing machine main unit of this patent application, with the outer shell removed (the chassis with the outer shell retained), the clean water tank, the push-pull rod, etc.

[0041] Figure 6 This is a view of the wastewater tank (with the outer sleeve hidden) of the nursing machine in this patent application, with the first tank body and each conductive spring in the open state;

[0042] Figure 7 Another view of the wastewater tank (in a disassembled state with the outer sleeve hidden) of the nursing machine of this patent application, separated from the first tank and each conductive spring sheet;

[0043] Figure 8 This is a perspective view of the wastewater tank of the nursing machine in this patent application;

[0044] Figure 9 This is a view of the wastewater tank of the nursing machine in this patent application in a disassembled state (the outer sleeve is hidden);

[0045] Figure 10 This is a perspective view of the connection device for the wastewater tank of the nursing machine in this patent application;

[0046] Figure 11 This is an enlarged cross-sectional view of a part of the main unit of the nursing machine in this patent application (the cross-section is taken at the first and fourth conductive springs, and the cross-section is a vertical plane parallel to the front and back direction).

[0047] Figure 12 for Figure 3 Enlarged views of the first and fourth frames.

Detailed Implementation Methods

[0048] Reference Figures 1 to 12 As shown, the nursing machine of this patent application includes a main unit, which has a housing 10, a negative pressure source 11 that provides power for suctioning human excrement, and a wastewater tank 2 that contains the waste suctioned by the negative pressure source 11. The negative pressure source 11 and the wastewater tank 2 are located inside the housing 10, with the negative pressure source 11 located downstream of the wastewater tank 2 to create a suction effect inside the wastewater tank 2. The wastewater tank 2 is equipped with a first conductive probe 20 and a second conductive probe 21. The first conductive probe 20 and the second conductive probe 21 are used as a pair to monitor the water level of the wastewater in the wastewater tank 2. When the wastewater in the wastewater tank 2 reaches a first water level, the first conductive probe 20 and the second conductive probe 21 are electrically connected due to the conductive connection of the wastewater in the wastewater tank 2. The electrical connection between the first conductive probe 20 and the second conductive probe 21 corresponds to the sewage in the sewage tank 2 reaching the first water level. Utilizing the conductivity of the sewage collected in the sewage tank 2 as a conductive medium, after the sewage in the sewage tank 2 reaches the first water level, the first conductive probe 20 and the second conductive probe 21 are electrically connected through the conductive connection of the sewage in the sewage tank 2. The configuration is simple and practical. The negative pressure source 11 includes a motor (not shown) and an impeller (not shown). The impeller rotates under the drive of the motor to generate a suction airflow, thereby providing the power to suction human excrement. The rated power of the motor is between 100W and 5000W.

[0049] Wastewater tank 2 is also equipped with a third conductive probe 22. The third conductive probe 22 is positioned higher than the second conductive probe 21 and the first conductive probe 20. The first conductive probe 20 and the third conductive probe 22 are used as a pair to monitor the water level of the wastewater in wastewater tank 2. When the wastewater in wastewater tank 2 reaches the second water level, the first conductive probe 20 and the third conductive probe 22 are electrically connected due to the conductive connection of the wastewater in wastewater tank 2. The second water level is higher than the first water level. The first and second water levels can be selected as needed. Generally, after the wastewater in wastewater tank 2 is detected to have reached the first water level, wastewater tank 2 should be removed and emptied as soon as possible. When the wastewater in wastewater tank 2 reaches the second water level, it means that wastewater tank 2 is almost full, so time is of the essence, and wastewater tank 2 should be removed and emptied immediately. Therefore, users should not wait until the wastewater in wastewater tank 2 reaches the second water level before emptying wastewater tank 2. Instead of blindly identifying any water level in the sewage tank 2, the first and second water levels are used as target water levels. When the sewage in the sewage tank 2 reaches the first or second water level, the host can be set to issue a corresponding alarm to notify the user to empty the sewage tank 2.

[0050] It is easy to understand that the sewage in sewage tank 2, as a conductive medium, is capable of conducting electricity. The electrical connection between the first conductive probe 20 and the second conductive probe 21 means that the circuit containing the first conductive probe 20 and the second conductive probe 21 is conductive. Based on this, the main controller can determine that the sewage in sewage tank 2 has reached the corresponding water level (first water level). Similarly, the electrical connection between the first conductive probe 20 and the third conductive probe 22 means that the circuit containing the first conductive probe 20 and the third conductive probe 22 is conductive. Based on this, the main controller can determine that the sewage in sewage tank 2 has reached the corresponding water level (second water level). Under normal circumstances, if the sewage in sewage tank 2 has not reached the first water level, the circuit between the first conductive probe 20 and the second conductive probe 21 is open; if the sewage in sewage tank 2 has not reached the second water level, the circuit between the first conductive probe 20 and the third conductive probe 22 is open. After the sewage in the sewage tank 2 reaches the first water level, the first conductive probe 20 and the second conductive probe 21 are respectively at least partially immersed in the sewage in the sewage tank 2, thereby being electrically connected by the conductive connection of the sewage in the sewage tank 2; after the sewage in the sewage tank 2 reaches the second water level, the first conductive probe 20 and the third conductive probe 22 are respectively at least partially immersed in the sewage in the sewage tank 2, thereby being electrically connected by the conductive connection of the sewage in the sewage tank 2.

[0051] The sewage tank 2 is provided with a first side wall 230, a second side wall 231, a third side wall 232, and a fourth side wall 233. The first side wall 230 and the second side wall 231 are spaced apart and opposite to each other, and the third side wall 232 and the fourth side wall 233 are spaced apart and opposite to each other. The third side wall 232 is connected between one side of the first side wall 230 and one side of the second side wall 231, and the fourth side wall 233 is connected between the opposite side of the first side wall 230 and the opposite side of the second side wall 231. The first conductive probe 20 is provided on the first side wall 230, and the second conductive probe 21 and the third conductive probe 22 are provided on the second side wall 231. The inner wall of the sewage tank 2 inevitably retains stains, sewage traces, and residual sewage film. These stains, sewage traces, and sewage film have a certain degree of conductivity. The present application is designed in such a way that the second conductive probe 21 and the third conductive probe 22 are effectively separated from the first conductive probe 20. This helps to avoid the accidental situation where the stains, sewage traces, and sewage film on the inner wall of the sewage tank 2 cause electrical connection between the third conductive probe 22 and / or the second conductive probe 21 and the first conductive probe 20 when the sewage level in the sewage tank 2 has not reached the predetermined height. This helps to avoid false alarms in sewage level monitoring.

[0052] The second sidewall 231 is provided with a first protruding rib 2310 and a second protruding rib 2311, which are spaced apart and located on the inner side of the second sidewall 231. The third conductive probe 22 is located on the first protruding rib 2310, and the second conductive probe 21 is located on the second protruding rib 2311. It is understandable that once the second conductive probe 21 and the third conductive probe 22 are electrically connected by residual stains, sewage traces, or residual sewage film on the inner wall surface of the second sidewall 231, it means that the second conductive probe 21 and the third conductive probe 22 become one, thus losing the ability to distinguish between high and low water levels. The first rib 2310 and the second rib 2311, being protruding, can suppress the formation of residual sewage traces and films on them, and can also isolate residual sewage traces and films to a certain extent. The second conductive probe 21 and the third conductive probe 22 are located on their respective corresponding spaced ribs, which helps to prevent residual sewage traces and films from electrically connecting the second conductive probe 21 and the third conductive probe 22, thus preventing the failure of the high and low water level differentiation capability. In addition, the first rib 2310 and the second rib 2311 can also isolate residual sewage traces and films on the inner wall surface of the second sidewall 231 to a certain extent, making it difficult for residual sewage traces and films on the inner wall surface of the second sidewall 231 to reach the point where they can electrically connect the second conductive probe 21 and the third conductive probe 22.

[0053] The first sidewall 230 and the second sidewall 231 are spaced apart front to back, and the third sidewall 232 and the fourth sidewall 233 are spaced apart left to right. The second conductive probe 21 and the third conductive probe 22 are staggered in both the front-back and left-right directions. The first rib 2310 and the second rib 2311 extend vertically. This design effectively separates the second conductive probe 21 and the third conductive probe 22, preventing them from being electrically connected by residual sewage traces or residual sewage membranes.

[0054] The sewage tank 2 is also provided with a first bottom wall 234, a top cover 235, and a connecting device 236. The top cover 235 is vertically spaced opposite the first bottom wall 234. The lower ends of the first side wall 230, the second side wall 231, the third side wall 232, and the fourth side wall 233 are respectively connected to the first bottom wall 234. The upper ends of the first side wall 230, the second side wall 231, the third side wall 232, and the fourth side wall 233 together form a port. Covered by the top cover 235, the connecting device 236 is detachably installed on the top cover 235. The connecting device 236 has a waste inlet pipe 2360 and an airflow outlet pipe 2361. One end of the waste inlet pipe 2360 and one end of the airflow outlet pipe 2361 are directly fluidly connected to the inside of the sewage tank 2. The airflow outlet pipe 2361 is located upstream of the negative pressure source 11 and downstream of the waste inlet pipe 2360. Under the suction of the negative pressure source 11, the waste... The waste enters the sewage tank 2 through the waste inlet pipe 2360 and is discharged into the sewage tank 2. Under the suction of the negative pressure source 11, the suction airflow is discharged out of the sewage tank 2 through the airflow outlet pipe 2361 and flows towards the negative pressure source 11. The waste inlet pipe 2360 is close to the first side wall 230 and far away from the second side wall 231. Therefore, when the waste is sucked into the sewage tank 2 through the waste inlet pipe 2360, it is more likely or more probable that the sewage and other waste will splash or contaminate the inner wall surface of the first side wall 230 rather than the inner wall surface of the second side wall 231. As a result, there is less sewage and other waste residue on the inner wall surface of the second side wall 231 than on the inner wall surface of the first side wall 230. This helps to prevent the second conductive probe 21 and the third conductive probe 22 on the second side wall 231 from being electrically connected by the sewage and other waste residue on the inner wall surface of the second side wall 231, thus avoiding the failure of the high and low water level differentiation capability. A filter screen 2362 may be provided at one end of the airflow outlet pipe 2361 to prevent excrement from being sucked into the airflow outlet pipe 2361.

[0055] The wastewater tank 2 is also provided with a first handle 237 and a second handle 238. The upper cover 235 is provided with a connection port (not shown). The connecting device 236 is detachably installed on the connection port. The connection port is close to the first side wall 230 and away from the second side wall 231. The connection port can be used as a wastewater pouring port (that is, the user can pour out the wastewater in the wastewater tank 2 through the connection port). The first handle 237 is provided on the upper cover 235 and can be used to lift the wastewater tank 2. The first handle 237 is located on the side of the connection port away from the first side wall 230 and close to the second side wall 231. The second handle 238 is formed at the end of the first bottom wall 234 close to the second side wall 231. The first bottom wall 234 is provided with a recess 2340 corresponding to the second handle 238, which is concave upward from the bottom side of the first bottom wall 234. When a person holds the second handle 238, their fingers can be accommodated in the recess 2340. This design allows users to easily pour wastewater and other waste from the wastewater tank 2 from the side where the first side wall 230 is located, while holding the first handle 237 with one hand and the second handle 238 with the other. This results in less wastewater residue remaining on the inner wall of the second side wall 231 compared to the inner wall of the first side wall 230, thus reducing the likelihood of electrical connection between the second conductive probe 21 and the third conductive probe 22 on the inner wall of the second side wall 231 due to residual wastewater or other contaminants. Users can carry the wastewater tank 2 to the bathroom, detach the connecting device 236 from the connecting port, and then pour the wastewater and other waste from the wastewater tank 2 out through the connecting port. The recess 2340 is formed along with the molded second handle 238.

[0056] The main unit also includes a first tank body 3, in which the sewage tank 2 is at least partially housed. The upper end of the first tank body 3 is an opening for the sewage tank 2 to be placed downwards into the first tank body 3. The lower end of the first tank body 3 is provided with a second bottom wall 30 corresponding to the first bottom wall 234. The second bottom wall 30 is provided with an upwardly protruding convex bulge 300, which matches and is accommodated in a recess 2340. This design can prevent incorrect installation of the sewage tank 2 and enhance the relative positional stability between the sewage tank 2 and the first tank body 3. In this embodiment, the upper cover 235 is detachably connected to the third side wall 232 and the fourth side wall 233 by several fasteners 25. The connecting device 236 is screwed onto the connecting port. The outer periphery of the connecting port is provided with external threads, and correspondingly, the inner periphery of the connecting device 236 is provided with internal threads 2364, so that the connecting port and the connecting device 236 are detachably screwed together.

[0057] The wastewater tank 2 is equipped with a fourth conductive probe 24, which is located on the first side wall 230. The position of the fourth conductive probe 24 is not lower than the positions of the first conductive probe 20 and the second conductive probe 21, and not higher than the position of the third conductive probe 22. The main unit is also equipped with a first conductive spring 40, a second conductive spring 41, a third conductive spring 42, and a fourth conductive spring 43. The first conductive spring 40 and the fourth conductive spring 43 are spaced apart and short-circuited. Thus, when the first conductive probe 20 is electrically connected to the first conductive spring 40 and the fourth conductive probe 24 is electrically connected to the fourth conductive spring 43, the first conductive probe 20 and the fourth conductive probe 24 are also short-circuited. With this configuration, the fourth conductive probe 24 serves as a backup for the first conductive probe 20 to a certain extent and can also be used with the third conductive probe 22 to monitor the second water level. The first conductive probe 20 and the second conductive probe 21 are at essentially the same height. In this embodiment, the first conductive probe 20 and the second conductive probe 21 are at the same height. The third conductive probe 22 and the fourth conductive probe 24 are at essentially the same height. In this embodiment, the third conductive probe 22 and the fourth conductive probe 24 are at the same height.

[0058] The first sidewall 230 is provided with at least one protruding rib (not labeled), which is located on the inner side of the first sidewall 230. The first conductive probe 20 and the fourth conductive probe 24 are disposed on the at least one protruding rib. This design reduces the probability of electrical connection between the first conductive probe 20 and the fourth conductive probe 24 on the first sidewall 230 and the second conductive probe 21 and the third conductive probe 22 on the second sidewall 231 via sewage traces or sewage films on the inner wall surfaces of the sewage tank 2. The at least one protruding rib includes a third protruding rib 2300, which extends vertically. The first conductive probe 20 and the fourth conductive probe 24 are disposed on the third protruding rib 2300, with the first conductive probe 20 located below the fourth conductive probe 24.

[0059] The main unit is also provided with a first cable component 12 electrically connected to the first conductive spring 40 and a fourth cable component 13 electrically connected to the fourth conductive spring 43. The first cable component 12 and the fourth cable component 13 are directly electrically connected together so that the first conductive spring 40 and the fourth conductive spring 43 are short-circuited.

[0060] The first conductive probe 20 is provided with a first screw 200 and a first conductive end cap 201. The first screw 200 passes through the first sidewall 230 and is screwed together with the first conductive end cap 201. The first conductive end cap 201 is located on the inner side of the first sidewall 230 to contact the sewage in the sewage tank 2. The first conductive spring 40 is located on the outer side of the first sidewall 230 and elastically presses against the first screw 200 to be electrically connected with the first conductive probe 20. The second conductive probe 21 is provided with a second screw 210 and a second conductive end cap 211. The second screw 210 passes through the second sidewall 231 and is screwed together with the second conductive end cap 211. The second conductive end cap 211 is located on the inner side of the second sidewall 231 to contact the sewage in the sewage tank 2. The second conductive spring 41 is located on the outer side of the second sidewall 231 and elastically presses against the second screw 210 to be electrically connected with the second conductive probe 21. After the sewage in the sewage tank 2 reaches the first water level, the first conductive end cap 201 and the second conductive end cap 211 are respectively at least partially immersed in the sewage in the sewage tank 2, so that they are electrically connected under the conductive connection of the sewage in the sewage tank 2, and thus the first conductive probe 20 and the second conductive probe 21 are electrically connected under the conductive connection of the sewage in the sewage tank 2.

[0061] The third conductive probe 22 is positioned higher than the second conductive probe 21 and the first conductive probe 20. The third conductive probe 22 is equipped with a third screw 220 and a third conductive end cap 221. The third screw 220 penetrates the second sidewall 231 and is screwed together with the third conductive end cap 221. The third conductive end cap 221 is located inside the second sidewall 231 to allow contact with the sewage in the sewage tank 2. After the sewage in the sewage tank 2 reaches the second water level, the first conductive end cap 201 and the third conductive end cap 221 are respectively at least partially immersed in the sewage in the sewage tank 2, thereby being electrically connected under the conductive connection of the sewage in the sewage tank 2. Thus, the first conductive probe 20 and the third conductive probe 22 are electrically connected under the conductive connection of the sewage in the sewage tank 2. The second water level is higher than the first water level.

[0062] The first screw 200 has a first stud 2000 and a first large end 2001 integrally connected to the first stud 2000. The first stud 2000 passes through the second sidewall 231 and is screwed together with the first conductive end cap 201. The first large end 2001 is located at the end of the first screw 200 away from the first conductive end cap 201. The first conductive spring 40 elastically presses against the first large end 2001. The sewage tank 2 also has a first sealing ring 260, which is fitted on the first stud 2000 and pressed between the first large end 2001 and the first sidewall 230 to achieve the connection between the first large end 2001 and the first sidewall 230. The second screw 210 is provided with a second stud (not shown) and a second large end 2100 integrally connected to the second stud. The second stud passes through the second side wall 231 and is screwed together with the second conductive end cap 211. The second large end 2100 is located at the end of the second screw 210 away from the second conductive end cap 211. The second conductive spring 41 elastically presses against the second large end 2100. The sewage tank 2 is also provided with a second sealing ring (not shown). The second sealing ring is fitted on the second stud and is pressed between the second large end 2100 and the second side wall 231 to achieve a seal between the second large end 2100 and the second side wall 231.

[0063] The first tank body 3 is also provided with a first opening 311. A first conductive spring piece 40 is installed in the first tank body 3. A portion of the first conductive spring piece 40 protrudes into the first tank body 3 through the first opening 311 and elastically presses against the first conductive probe 20 to electrically connect with the first conductive probe 20. The portion of the first conductive spring piece 40 elastically presses against the first large end 2001 to electrically connect with the first conductive probe 20. As the sewage tank 2 is lowered into the first tank body 3, the first conductive probe 20 moves down to the position corresponding to the first conductive spring piece 40 and is abutted by the first conductive spring piece 40.

[0064] The first barrel body 3 has a fifth sidewall 31 corresponding to the first sidewall 230. A first through-hole 311 is opened on the fifth sidewall 31. The first conductive spring 40 is in the shape of a spring arm. The main body also has a fifth screw 44. The first conductive spring 40 is locked to the fifth sidewall 31 by means of the fifth screw 44. The fifth sidewall 31 also has a first frame portion 310 that frames the first conductive spring 40. The first frame portion 310 is located on the outside of the fifth sidewall 31. The first frame portion 310 has a first clearance notch 3100 for the first cable component 12 to pass through. The first cable component 12 has a first wire 120 and a first terminal 121 connected to the first wire 120. The first terminal 121 is locked by means of the fifth screw 44. The pin of the first terminal 121 is directly connected to the first wire 120. The pin of the first terminal 121 and / or the first wire 120 pass through the first clearance notch 3100. The first terminal 121 is fitted onto the screw post of the fifth screw 44.

[0065] The main unit also includes a sixth screw (not shown) and a second cable (not shown) connecting the second conductive spring 41. The first tank 3 also has a sixth side wall 32 corresponding to the second side wall 231. The sewage tank 2 is located between the fifth side wall 31 and the sixth side wall 32. The sixth side wall 32 has a second opening 320. A portion of the second conductive spring 41 protrudes into the first tank 3 through the second opening 320 and elastically presses against the second conductive probe 21 to electrically connect with the second conductive probe 21. The second conductive spring 41 is locked to the sixth side wall 32 by the sixth screw. The sixth side wall 32 also has a second frame portion 321 that frames the second conductive spring 41. The second frame portion 321 is located on the outside of the sixth side wall 32. The second conductive spring 41 is in the shape of a spring arm, and the second frame portion 321 has a second clearance notch 3210 for the second cable to pass through. The second cable assembly includes a second wire and a second terminal connected to the second wire. The pins of the second terminal are directly connected to the second wire, and the pins of the second terminal and / or the second wire pass through the second clearance notch 3210. A portion of the second conductive spring 41 is elastically pressed against the second large end 2100 to electrically connect with the second conductive probe 21.

[0066] The fifth sidewall 31 is also provided with a first locking screw post 3101, which is surrounded by the first frame portion 310. The fifth screw 44 is screwed into the first locking screw post 3101 to lock the first terminal 121 and the first conductive spring 40 together.

[0067] The sixth sidewall 32 is also provided with a second locking screw post (not shown) located inside the second frame portion 321. The second locking screw post is surrounded by the second frame portion 321. The sixth screw is screwed into the second locking screw post to lock the second terminal and the second conductive spring 41 together. The second terminal is sleeved on the screw post of the sixth screw.

[0068] The main body is further provided with a frame member 14, a second barrel 15, and a clean water tank 16. At least a part of the clean water tank 16 is accommodated in the second barrel 15. The upper end of the second barrel 15 is an open mouth for the clean water tank 16 to be placed downward into the second barrel 15. The frame member 14 is provided above the first barrel 3 and the second barrel 15. The frame member 14 forms a first frame opening 140 corresponding to the upper side of the first barrel 3 and a second frame opening 141 corresponding to the upper side of the second barrel 15. The sewage tank 2 is placed downward into the first barrel 3 through the first frame opening 140 and is partially accommodated in the first frame opening 140. The clean water tank 16 is placed downward into the second barrel 15 through the second frame opening 141 and is partially accommodated in the second frame opening 141. The second conductive elastic piece 41 is installed on the first barrel 3, and the third conductive elastic piece 42 is installed on the frame member 14. A part of the second conductive elastic piece 41 protrudes into the first barrel 3 through the second through hole 320 and elastically presses against the second conductive probe 21 to be electrically connected to the second conductive probe 21. The frame member 14 is further provided with a third through hole 1420. A part of the third conductive elastic piece 42 protrudes into the first frame opening 140 through the third through hole 1420 and elastically presses against the third conductive probe 22 to be electrically connected to the third conductive probe 22. The first barrel 3 and the second barrel 15 are respectively locked to the frame member 14. From a top view perspective, the frame member 14 is in the shape of a Chinese character 'Ri'. The first frame opening 140 and the second frame opening 141 are respectively substantially rectangular frame openings.

[0069] The third screw 220 is provided with a third stud (not shown) and a third large head end 2200 integrally connected to the third stud. The third stud passes through the second side wall 231 and is screwed to the third conductive end cap 221. The third large head end 2200 is located at one end of the third screw 220 away from the third conductive end cap 221. The said part of the third conductive elastic piece 42 elastically presses against the third large head end 2200 to be electrically connected to the third conductive probe 22. The sewage tank 2 is further provided with a third sealing ring (not shown). The third sealing ring is sleeved on the third stud and is pressed between the third large head end 2200 and the second side wall 231 to achieve sealing between the third large head end 2200 and the second side wall 231. As the sewage tank 2 is placed downward into the first barrel 3, the second conductive probe 21 moves downward to a position corresponding to the second conductive elastic piece 41 and is abutted by the second conductive elastic piece 41, and the third conductive probe 22 moves downward to a position corresponding to the third conductive elastic piece 42 and is abutted by the third conductive elastic piece 42.

[0070] The frame member 14 has a seventh sidewall 142 located above the sixth sidewall 32 and an eighth sidewall 143 located above the fifth sidewall 31. The seventh sidewall 142 is vertically connected to the sixth sidewall 32, and the eighth sidewall 143 is vertically connected to the fifth sidewall 31. The seventh sidewall 142 and the eighth sidewall 143 are located on opposite sides of the first frame opening 140, forming opposite sidewalls of the first frame opening 140. A third through-hole 1420 is opened in the seventh sidewall 142. A fourth conductive spring 43 is installed on the eighth sidewall 143, which has a fourth through-hole 1430. A portion of the fourth conductive spring 43 protrudes into the first frame opening 140 through the fourth through-hole 1430 and elastically presses against the fourth conductive probe 24 for electrical connection. The seventh sidewall 142 is locked together with the sixth sidewall 32, and the eighth sidewall 143 is locked together with the fifth sidewall 31.

[0071] The main unit also includes a seventh screw (not shown), an eighth screw 45, and a third cable component (not shown) connecting the third conductive spring 42. The third conductive spring 42 is locked to the seventh side wall 142 by the seventh screw, and the fourth conductive spring 43 is locked to the eighth side wall 143 by the eighth screw 45. The seventh side wall 142 also includes a third frame portion 1421 that frames the third conductive spring 42. The third frame portion 1421 is located on the outside of the seventh side wall 142 and has a third clearance notch for the third cable component to pass through. The eighth side wall 143 also includes a fourth frame portion 1431 that frames the fourth conductive spring 43. The fourth frame portion 1431 is located on the outside of the eighth side wall 143 and has a fourth clearance notch 1432 for the fourth cable component 13 to pass through. As the sewage tank 2 is lowered into the first tank 3, the fourth conductive probe 24 moves down to the position corresponding to the fourth conductive spring 43 and is abutted by the fourth conductive spring 43. The third cable component has a third wire and a third terminal for connecting the third wire. The third terminal is locked by a seventh screw. The pins of the third terminal are directly connected to the third wire. The pins of the third terminal and / or the third wire pass through a third clearance notch. The fourth cable component 13 has a fourth wire 130 and a fourth terminal 131 for connecting the fourth wire 130. The fourth terminal 131 is locked by an eighth screw 45. The pins of the fourth terminal 131 are directly connected to the fourth wire 130. The pins of the fourth terminal 131 and / or the fourth wire 130 pass through a fourth clearance notch 1432. The third terminal is fitted onto the screw post of the seventh screw, and the fourth terminal 131 is fitted onto the screw post of the eighth screw 45. The first wire 120 is directly electrically connected to the fourth wire 130.

[0072] The fourth conductive probe 24 is provided with a fourth screw 240 and a fourth conductive end cap 241. The fourth screw 240 passes through the first sidewall 230 and is screwed together with the fourth conductive end cap 241. The fourth conductive end cap 241 is located on the inner side of the first sidewall 230 to allow contact with the sewage in the sewage tank 2. The fourth conductive spring 43 is located on the outer side of the first sidewall 230 and elastically presses against the fourth screw 240 to electrically connect with the fourth conductive probe 24. The fourth screw 240 is provided with a fourth stud 2400 and a fourth large end integrally connected to the fourth stud 2400. 2401, the fourth stud 2400 passes through the first sidewall 230 and is screwed together with the fourth conductive end cap 241. The fourth large end 2401 is located at the end of the fourth screw 240 away from the fourth conductive end cap 241. The fourth conductive spring 43 elastically presses against the fourth large end 2401 of the fourth screw 240. The sewage tank 2 is also provided with a fourth sealing ring 261, which is fitted onto the fourth stud 2400 and pressed between the fourth large end 2401 and the first sidewall 230 to achieve a seal between the fourth large end 2401 and the first sidewall 230. The portion of the fourth conductive spring 43 elastically presses against the fourth large end 2401 to be electrically connected to the fourth conductive probe 24.

[0073] The seventh sidewall 142 is also provided with a third locking screw post (not shown), which is surrounded by the third frame portion 1421. The seventh screw is screwed into the third locking screw post to lock the third terminal and the third conductive spring 42 together. The eighth sidewall 143 is also provided with a fourth locking screw post 1433, which is surrounded by the fourth frame portion 1431. The eighth screw 45 is screwed into the fourth locking screw post 1433 to lock the fourth terminal 131 and the fourth conductive spring 43 together. The first frame portion 310, the second frame portion 321, the third frame portion 1421, and the fourth frame portion 1431 are rectangular frames. The conductive caps and screws involved in this application can be made of metal, such as stainless steel.

[0074] This nursing device also includes a wearable toilet (not shown) to receive human waste, a suction pipe (not shown) connecting the main unit and the toilet, and a water supply pipe (not shown) connecting the main unit and the toilet. The toilet has a bowl to hold human waste. The frame member 14 has a first adapter pipe 144 and a second adapter pipe 145, which are connected to the connecting device 236. The main unit also has a fluid supply connection between the first adapter pipe 144 and the suction pipe. The first connecting pipe (not shown) and the second connecting pipe (not shown) connecting the fluid supply pipe between the second adapter pipe 145 and the negative pressure source 11 are connected. Under the suction of the negative pressure source 11, the waste in the toilet is transported to the sewage tank 2 through the suction pipe, the first connecting pipe, the first adapter pipe 144, and the waste inlet pipe 2360. The suction airflow formed under the suction of the negative pressure source 11 flows out of the sewage tank 2 through the airflow outlet pipe 2361 and flows to the negative pressure source 11 through the second adapter pipe 145 and the second connecting pipe. The connecting device 236 is provided with a retractable outer sleeve 2363, and the connecting device 236 is connected to the first adapter pipe 144 and the second adapter pipe 145 through the outer sleeve 2363. The main unit supplies water to the toilet bowl through the water supply pipe, flushing the human excretory parts, the toilet bowl, and the human excrement received by the toilet bowl. During the flushing process, sewage containing human excrement is formed in the toilet bowl and is drawn away by the negative pressure source 11. Therefore, in this embodiment, the sewage in the toilet bowl is mainly sewage containing human excrement. The negative pressure source 11 is provided with an air inlet port 110 that connects to the second connecting pipe. The suction airflow formed by the suction of the negative pressure source 11 flows from the toilet bowl through the sewage suction pipe, the first connecting pipe, the first transfer pipe 144, the sewage inlet pipe 2360, the inside of the sewage tank 2, the airflow outlet pipe 2361, the second transfer pipe 145, the second connecting pipe, and the air inlet port 110 before flowing to the negative pressure source 11. Therefore, the suction airflow formed by the suction of the negative pressure source 11 has a long flow path between the toilet bowl and the negative pressure source 11.

[0075] The clean water tank 16 provides flushing water, which is supplied to the toilet via a water supply pipe. The clean water tank 16 is located inside the outer casing 10. The clean water tank 16 and the wastewater tank 2 are arranged side by side at the rear of the main unit. The outer casing 10 is provided with a flip cover 100, a base 101, and a rear cover 102. The flip cover 100 is located on the top side of the outer casing 10 and covers the clean water tank 16 and the wastewater tank 2. The flip cover 100 can be flipped open to expose the clean water tank 16 and the wastewater tank 2 so that they can be removed upwards. The flip cover 100 is provided with a third handle 1000, which is located at the rear end of the flip cover 100. The flip cover 100 can be flipped upwards by holding the third handle 1000. The main unit is also provided with a touch screen display 17, which is fixed to the top of the outer casing 10 and located in front of the flip cover 100. The chassis 101 is located on the bottom side of the housing 10, and the rear cover 102 is located on the rear side of the housing 10. The main unit is also equipped with wheels 18 and a retractable push-pull rod 19.

Claims

1. A main unit for use in a nursing machine, characterized in that: The device includes an outer shell, a negative pressure source that provides power for suctioning human excrement, and a wastewater tank that holds the waste suctioned by the negative pressure source. The negative pressure source and the wastewater tank are located inside the outer shell, with the negative pressure source located downstream of the wastewater tank. The wastewater tank is equipped with a first conductive probe and a second conductive probe. The first and second conductive probes are used as a pair to monitor the water level of the wastewater in the wastewater tank. When the wastewater in the wastewater tank reaches the first water level, the first and second conductive probes are electrically connected due to the conductive connection of the wastewater in the wastewater tank. The sewage tank is also equipped with a third conductive probe. The first conductive probe and the third conductive probe are used as a pair to monitor the water level of the sewage in the sewage tank. When the sewage in the sewage tank reaches the second water level, the first conductive probe and the third conductive probe are electrically connected due to the conductive connection of the sewage in the sewage tank. The second water level is higher than the first water level. The sewage tank is provided with a first side wall, a second side wall, a third side wall, and a fourth side wall. The first side wall and the second side wall are spaced apart and opposite to each other, and the third side wall and the fourth side wall are spaced apart and opposite to each other. The third side wall is connected between one side of the first side wall and one side of the second side wall, and the fourth side wall is connected between the opposite side of the first side wall and the opposite side of the second side wall. A first conductive probe is provided on the first side wall, and a second conductive probe and a third conductive probe are provided on the second side wall. The second sidewall is provided with a first rib and a second rib, which are spaced apart. The first rib and the second rib are located on the inner side of the second sidewall respectively. The third conductive probe is provided on the first rib and the second conductive probe is provided on the second rib. The first sidewall and the second sidewall are spaced apart front to back, the third sidewall and the fourth sidewall are spaced apart left to right, the second conductive probe and the third conductive probe are staggered in both the front-back direction and the left-right direction, and the first rib and the second rib extend in the vertical direction respectively.

2. The host computer according to claim 1, characterized in that: The main unit also includes a first conductive spring and a second conductive spring. The first conductive probe has a first screw and a first conductive end cap. The first screw passes through the first sidewall and is screwed together with the first conductive end cap. The first conductive end cap is located on the inner side of the first sidewall for contact with the sewage in the sewage tank. The first conductive spring is located on the outer side of the first sidewall and elastically presses against the first screw to electrically connect with the first conductive probe. The second conductive probe has a second screw and a second conductive end cap. The second screw passes through the second sidewall and is screwed together with the second conductive end cap. The second conductive end cap is located on the inner side of the second sidewall for contact with the sewage in the sewage tank. The second conductive spring is located on the outer side of the second sidewall and elastically presses against the second screw to electrically connect with the second conductive probe. After the sewage in the sewage tank reaches the first water level, the first conductive end cap and the second conductive end cap are respectively at least partially immersed in the sewage in the sewage tank, thereby being electrically connected by the conductive connection of the sewage in the sewage tank. Thus, the first conductive probe and the second conductive probe are electrically connected by the conductive connection of the sewage in the sewage tank.

3. The host computer according to claim 2, characterized in that: The third conductive probe is positioned higher than both the second and first conductive probes. The third conductive probe is equipped with a third screw and a third conductive end cap. The third screw penetrates the second sidewall and is screwed together with the third conductive end cap. The third conductive end cap is located inside the second sidewall for contact with the sewage in the sewage tank. After the sewage in the tank reaches the second water level, the first and third conductive end caps are at least partially immersed in the sewage, thus becoming electrically connected through the conductive connection of the sewage in the tank. Consequently, the first and third conductive probes are electrically connected through the conductive connection of the sewage in the tank. The second water level is higher than the first water level.

4. The host computer according to claim 1, characterized in that: The sewage tank is provided with a first side wall, a second side wall, a third side wall, and a fourth side wall. The first side wall and the second side wall are spaced apart and opposite each other, and the third side wall and the fourth side wall are spaced apart and opposite each other. The third side wall is connected between one side of the first side wall and one side of the second side wall, and the fourth side wall is connected between the opposite side of the first side wall and the opposite side of the second side wall. A first conductive probe is provided on the first side wall, and a second conductive probe and a third conductive probe are provided on the second side wall.

5. The host computer according to claim 2, characterized in that: The first screw has a first stud and is integrally connected to the first large end of the first stud. The first stud passes through the second sidewall and is screwed together with the first conductive end cap. The first large end is located at the end of the first screw away from the first conductive end cap. A first conductive spring is elastically pressed against the first large end. The sewage tank also has a first sealing ring, which is fitted on the first stud and pressed between the first large end and the first sidewall. The second screw has a second stud and is integrally connected to the second large end of the second stud. The second stud passes through the second sidewall and is screwed together with the second conductive end cap. The second large end is located at the end of the second screw away from the second conductive end cap. A second conductive spring is elastically pressed against the second large end. The sewage tank also has a second sealing ring, which is fitted on the second stud and pressed between the second large end and the second sidewall.

6. The host computer according to claim 1, characterized in that: The third conductive probe is positioned higher than both the second and first conductive probes.

7. The host computer according to claim 1, characterized in that: The wastewater tank also includes a first bottom wall, a top cover, and a connecting device. The top cover and the first bottom wall are positioned vertically opposite each other. The lower ends of the first, second, third, and fourth side walls are connected to the first bottom wall. The port formed by the upper ends of the first, second, third, and fourth side walls is covered by the top cover. The connecting device is detachably installed on the top cover and includes a waste inlet pipe and an airflow outlet pipe. One end of the waste inlet pipe and one end of the airflow outlet pipe are directly fluidly connected to the interior of the wastewater tank. The airflow outlet pipe is located upstream of the negative pressure source and downstream of the waste inlet pipe. Under the suction of the negative pressure source, the suctioned waste is discharged into the wastewater tank through the waste inlet pipe and the suction airflow formed under the suction of the negative pressure source flows out of the wastewater tank through the airflow outlet pipe and flows towards the negative pressure source. The waste inlet pipe is close to the first side wall and away from the second side wall.

8. The host computer according to claim 7, characterized in that: The sewage tank is also equipped with a first handle and a second handle. The top cover is equipped with a connection port. The connecting device is detachably installed on the connection port. The connection port is close to the first side wall and away from the second side wall. The connection port can be used as a sewage dumping port. The first handle is located on the top cover and can be used to lift the sewage tank. The first handle is located on the side of the connection port away from the first side wall and close to the second side wall. The second handle is formed at one end of the first bottom wall near the second side wall. The first bottom wall has a recess that is concave upward from the bottom side of the first bottom wall corresponding to the second handle, and the fingers can be accommodated in the recess when a person holds the second handle.

9. The host computer according to claim 8, characterized in that: The main unit is also provided with a first tank body, in which the sewage tank is at least partially housed. The upper end of the first tank body is an opening for the sewage tank to be placed downward into the first tank body. The lower end of the first tank body is provided with a second bottom wall corresponding to the first bottom wall. The second bottom wall is provided with an upwardly protruding bulge, which matches and is housed in the recess.

10. A main unit for use in a nursing machine, characterized in that: The device includes an outer shell, a negative pressure source that provides power for suctioning human excrement, and a wastewater tank that holds the waste suctioned by the negative pressure source. The negative pressure source and the wastewater tank are located inside the outer shell, with the negative pressure source located downstream of the wastewater tank. The wastewater tank is equipped with a first conductive probe and a second conductive probe. The first and second conductive probes are used as a pair to monitor the water level of the wastewater in the wastewater tank. When the wastewater in the wastewater tank reaches the first water level, the first and second conductive probes are electrically connected due to the conductive connection of the wastewater in the wastewater tank. The sewage tank is also equipped with a third conductive probe. The first conductive probe and the third conductive probe are used as a pair to monitor the water level of the sewage in the sewage tank. When the sewage in the sewage tank reaches the second water level, the first conductive probe and the third conductive probe are electrically connected due to the conductive connection of the sewage in the sewage tank. The second water level is higher than the first water level. The sewage tank is provided with a first side wall, a second side wall, a third side wall, and a fourth side wall. The first side wall and the second side wall are spaced apart and opposite to each other, and the third side wall and the fourth side wall are spaced apart and opposite to each other. The third side wall is connected between one side of the first side wall and one side of the second side wall, and the fourth side wall is connected between the opposite side of the first side wall and the opposite side of the second side wall. A first conductive probe is provided on the first side wall, and a second conductive probe and a third conductive probe are provided on the second side wall. The third conductive probe is positioned higher than the second and first conductive probes. The sewage tank is also equipped with a fourth conductive probe, which is located on the first side wall. The position of the fourth conductive probe is not lower than the positions of the first and second conductive probes and not higher than the position of the third conductive probe. The main unit is also equipped with a first conductive spring that is elastically pressed against the first conductive probe and electrically connected to it, and a fourth conductive spring that is elastically pressed against the fourth conductive probe and electrically connected to it. The first and fourth conductive springs are spaced apart and short-circuited. Thus, when the first and fourth conductive probes are electrically connected, they are also short-circuited.

11. The host computer according to claim 10, characterized in that: The first conductive probe and the second conductive probe are at the same height, and the third conductive probe and the fourth conductive probe are at the same height.

12. The host computer according to claim 10, characterized in that: The first sidewall is provided with at least one protruding rib, which is located on the inner side of the first sidewall. The first conductive probe and the fourth conductive probe are located on the at least one protruding rib.

13. The host computer according to claim 12, characterized in that: The at least one rib includes a third rib that extends in the vertical direction. The first conductive probe and the fourth conductive probe are disposed on the third rib, with the first conductive probe located below the fourth conductive probe.

14. The host computer according to claim 10, characterized in that: The main unit is also provided with a first cable component electrically connected to the first conductive spring and a fourth cable component electrically connected to the fourth conductive spring. The first cable component and the fourth cable component are directly electrically connected together so that the first conductive spring and the fourth conductive spring are short-circuited.

15. The host computer according to claim 10, characterized in that: The second sidewall is provided with a first rib and a second rib, which are spaced apart. The first rib and the second rib are located on the inner side of the second sidewall, respectively. The third conductive probe is provided on the first rib and the second conductive probe is provided on the second rib.

16. The host computer according to claim 15, characterized in that: The first sidewall and the second sidewall are spaced apart front to back, the third sidewall and the fourth sidewall are spaced apart left to right, the second conductive probe and the third conductive probe are staggered in both the front-back direction and the left-right direction, and the first rib and the second rib extend in the vertical direction respectively.

17. The host computer according to claim 10, characterized in that: The main unit is also equipped with a second conductive spring. The first conductive probe is equipped with a first screw and a first conductive end cap. The first screw passes through the first sidewall and is screwed together with the first conductive end cap. The first conductive end cap is located on the inner side of the first sidewall for contact with the sewage in the sewage tank. The first conductive spring is located on the outer side of the first sidewall. The second conductive probe is equipped with a second screw and a second conductive end cap. The second screw passes through the second sidewall and is screwed together with the second conductive end cap. The second conductive end cap is located on the inner side of the second sidewall for contact with the sewage in the sewage tank. The second conductive spring is located on the outer side of the second sidewall. The second conductive spring elastically presses against the second screw to electrically connect with the second conductive probe. After the sewage in the sewage tank reaches the first water level, the first conductive end cap and the second conductive end cap are respectively at least partially immersed in the sewage in the sewage tank, thereby electrically communicating under the conductive connection of the sewage in the sewage tank. Thus, the first conductive probe and the second conductive probe are electrically connected under the conductive connection of the sewage in the sewage tank.

18. A main unit for use in a nursing machine, characterized in that: The device includes an outer shell, a negative pressure source that provides power for suctioning human excrement, and a wastewater tank that holds the waste suctioned by the negative pressure source. The negative pressure source and the wastewater tank are located inside the outer shell, with the negative pressure source located downstream of the wastewater tank. The wastewater tank is equipped with a first conductive probe and a second conductive probe. The first and second conductive probes are used as a pair to monitor the water level of the wastewater in the wastewater tank. When the wastewater in the wastewater tank reaches the first water level, the first and second conductive probes are electrically connected due to the conductive connection of the wastewater in the wastewater tank. The main unit is also provided with a first tank and a first conductive spring. The sewage tank is at least partially housed in the first tank. The upper end of the first tank is an open opening for the sewage tank to be placed downward into the first tank. The first tank is provided with a first opening. The first conductive spring is installed in the first tank. A portion of the first conductive spring protrudes into the first tank through the first opening and elastically presses against the first conductive probe to be electrically connected to the first conductive probe. The wastewater tank is also equipped with a third conductive probe, and the main unit is also equipped with a frame component. The frame component forms a first frame opening corresponding to the upper side of the first tank. The wastewater tank is placed downward into the first tank through the first frame opening and is partially accommodated in the first frame opening. The main unit is also equipped with a second conductive spring and a third conductive spring. The second conductive spring is installed in the first tank, and the third conductive spring is installed in the frame component. The first tank is also equipped with a second opening. A portion of the second conductive spring protrudes into the first tank through the second opening and elastically presses against the second conductive probe to electrically connect with the second conductive probe. The frame component is also equipped with a third opening. A portion of the third conductive spring protrudes into the first frame opening through the third opening and elastically presses against the third conductive probe to electrically connect with the third conductive probe. The sewage tank has a first sidewall and a second sidewall spaced apart from each other. The sewage tank also has a fourth conductive probe. The first and fourth conductive probes are located on the first sidewall, and the second and third conductive probes are located on the second sidewall. The first tank body also has a fifth sidewall corresponding to the first sidewall and a sixth sidewall corresponding to the second sidewall. The fifth and sixth sidewalls are located on opposite sides of the first tank body. The first opening is opened on the fifth sidewall, and the second opening is opened on the sixth sidewall. The frame member has a seventh sidewall located above the sixth sidewall and an eighth sidewall located above the fifth sidewall. The seventh sidewall is vertically connected to the sixth sidewall, and the eighth sidewall is vertically connected to the fifth sidewall. The seventh and eighth sidewalls are located on opposite sides of the first frame opening, and the third opening is opened on the seventh sidewall. The main unit also has a fourth conductive spring piece, which is installed on the eighth sidewall. The eighth sidewall has a fourth opening. A part of the fourth conductive spring piece protrudes into the first frame opening through the fourth opening and elastically presses against the fourth conductive probe to electrically connect with the fourth conductive probe.

19. The host computer according to claim 18, characterized in that: As the sewage tank is lowered into the first barrel, the first conductive probe moves down to the position of the corresponding first conductive spring and is abutted by the first conductive spring.

20. The host computer according to claim 18, characterized in that: The main unit is also provided with a fifth screw, and the first conductive spring is locked to the fifth side wall by means of the fifth screw. The fifth side wall is also provided with a first frame portion that frames the first conductive spring, and the first frame portion is located on the outside of the fifth side wall.

21. The host computer according to claim 20, characterized in that: The main unit is also provided with a first cable component that is electrically connected to the first conductive spring, and the first frame has a first clearance notch for the connection of the first cable component to pass through.

22. The host computer according to claim 21, characterized in that: The first cable assembly includes a first wire and a first terminal block for connecting the first wire. The first terminal block is locked by a fifth screw. The pins of the first terminal block are directly connected to the first wire. The pins of the first terminal block and / or the first wire pass through a first clearance notch.

23. The host computer according to claim 21, characterized in that: The main unit is also equipped with a sixth screw and a second cable component that connects the second conductive spring. The sewage tank is located between the fifth side wall and the sixth side wall. The second conductive spring is locked to the sixth side wall by means of the sixth screw. The sixth side wall is also equipped with a second frame that frames the second conductive spring. The second frame is located on the outside of the sixth side wall.

24. The host computer according to claim 23, characterized in that: The fifth sidewall is also provided with a first locking screw post, which is surrounded by the first frame portion. The fifth screw is screwed into the first locking screw post to lock the first terminal block and the first conductive spring together.

25. The host computer according to claim 18, characterized in that: The main unit is also provided with a second tank and a purified water tank. The purified water tank is at least partially housed in the second tank. The upper end of the second tank is an opening for the purified water tank to be placed downward into the second tank. A frame member is provided above the first tank and the second tank. The frame member forms a second frame opening corresponding to the upper side of the second tank. The purified water tank is placed downward into the second tank through the second frame opening and is partially housed in the second frame opening.

26. The host computer according to claim 18, characterized in that: As the sewage tank is lowered into the first barrel, the second conductive probe moves down to the position corresponding to the second conductive spring and is abutted by the second conductive spring, and the third conductive probe moves down to the position corresponding to the third conductive spring and is abutted by the third conductive spring.

27. The host computer according to any one of claims 1-24, 26, characterized in that: The main unit is also equipped with a clean water tank, which is located inside the outer shell. The clean water tank and the wastewater tank are arranged side by side at the rear of the main unit. The outer shell is equipped with a flip cover, which is located on the top side of the outer shell and covers the top of the clean water tank and the wastewater tank. The flip cover can be flipped open to expose the clean water tank and the wastewater tank so that they can be removed from the top.

28. The host computer according to claim 18, characterized in that: The main unit also includes a seventh screw, an eighth screw, a third cable connecting the third conductive spring, and a fourth cable connecting the fourth conductive spring. The third conductive spring is locked to the seventh side wall by the seventh screw, and the fourth conductive spring is locked to the eighth side wall by the eighth screw. The seventh side wall also has a third frame portion that frames the third conductive spring. The third frame portion is located on the outside of the seventh side wall and has a third clearance notch for the third cable to pass through. The eighth side wall also has a fourth frame portion that frames the fourth conductive spring. The fourth frame portion is located on the outside of the eighth side wall and has a fourth clearance notch for the fourth cable to pass through. As the sewage tank is lowered into the first barrel, the fourth conductive probe moves down to the position corresponding to the fourth conductive spring and is abutted by the fourth conductive spring.

29. The host computer according to claim 27, characterized in that: The flip cover has a third handle located at the rear of the flip cover, which can be used to hold the third handle to flip the flip cover upwards; the main unit also has a touch screen display screen, which is fixed to the top of the shell and located in front of the flip cover.

30. A nursing machine, characterized in that: The device includes a main unit as described in any one of claims 1-29, a toilet that can be worn on the human body to receive human excrement, a suction pipe connected between the main unit and the toilet, and a water supply pipe connected between the main unit and the toilet, wherein the toilet is provided with a urinal to accommodate human excrement.

31. The nursing machine according to claim 30, characterized in that: The sewage tank is also equipped with a connecting device, which includes a sewage inlet pipe and an airflow outlet pipe. The frame of the main unit is equipped with a first adapter pipe and a second adapter pipe, which are connected to the connecting device. The main unit is also equipped with a first connecting pipe that supplies fluid between the first adapter pipe and the suction pipe, and a second connecting pipe that supplies fluid between the second adapter pipe and the negative pressure source. Under the suction of the negative pressure source, the sewage in the toilet is transported to the sewage tank in sequence through the suction pipe, the first connecting pipe, the first adapter pipe, and the sewage inlet pipe. The suction airflow formed under the suction of the negative pressure source flows out of the sewage tank through the airflow outlet pipe and flows to the negative pressure source in sequence through the second adapter pipe and the second connecting pipe. The main unit is also equipped with wheels.

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