An auxiliary device

Abstract

The application provides an auxiliary device which can realize the lifting of a seat plate in the vertical direction. The technical scheme of the auxiliary device comprises a seat plate, a movable unit, a fixed unit and a bag; the bag is located in the fixed unit, an opening is arranged on the bag, the opening is used for the input and output of gas or liquid, and the bag expands or shrinks in the process of inputting and outputting the gas or liquid; the movable unit is slidably connected with the fixed unit, the movable unit is located above the bag, and the expansion or shrinkage of the bag makes the movable unit slide out of or slide into the fixed unit; and the seat plate is connected with the movable unit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nursing, in particular to an auxiliary device. BACKGROUND

[0002] Toilet is a necessary sanitary equipment in daily life, in the existing use of toilet, for those who have knee joint movement obstacles, weak legs and the old and weak, it is very difficult to sit down and stand up before and after using the toilet. SUMMARY

[0003] The present application provides an auxiliary device, which realizes the lifting of the seat plate in the vertical direction.

[0004] The technical scheme of the auxiliary device comprises:

[0005] a seat plate, a movable unit, a fixed unit and a bag;

[0006] The bag is located in the fixed unit, and an opening is arranged on the bag, which is used for the inlet and outlet of gas or liquid, and the bag expands or shrinks during the inlet and outlet of gas or liquid;

[0007] The movable unit is in sliding connection with the fixed unit, and the movable unit is located above the bag, and the expansion or shrinkage of the bag causes the movable unit to slide out of or into the fixed unit;

[0008] The seat plate is connected with the movable unit.

[0009] Preferably, in the technical scheme of the auxiliary device, the auxiliary device further comprises a controller, which is connected with the opening and controls the inlet and outlet of gas or liquid of the bag.

[0010] Preferably, in the technical scheme of the auxiliary device, the controller is connected with a water source and controls the inlet and outlet of water of the bag.

[0011] Preferably, in the technical scheme of the auxiliary device, a total water inlet, a working port and a water outlet are arranged on the controller, the total water inlet is connected with the water source, and the working port is communicated with the opening.

[0012] Preferably, in the technical scheme of the auxiliary device, the controller comprises a handle in rotational connection and a control member, the total water inlet, the working port and the water outlet are all arranged on the control member, and in the rotational process of the handle, the total water inlet, the working port and the water outlet are independent of each other, or the working port is communicated with the total water inlet, or the working port is communicated with the water outlet.

[0013] Preferably, in the technical scheme of the above-mentioned auxiliary device, the handle is provided with at least three independent areas, when the bag is not filled with water and not drained, the total water inlet, the working port and the water outlet correspond to different independent areas respectively, when the bag is filled with water, the total water inlet and the working port are located in the same independent area, and when the bag is drained, the working port and the water outlet are located in the same independent area.

[0014] Preferably, in the technical scheme of the above-mentioned auxiliary device, the total water inlet is connected with a water source through a total water inlet pipeline, the working port is communicated with the opening through a water inlet and outlet pipeline, and the water outlet is connected with a drainage pipeline.

[0015] Preferably, in the technical scheme of the above-mentioned auxiliary device, a limiting valve is further included, and the limiting valve is installed at the limit position of the sliding of the movable unit.

[0016] Preferably, in the technical scheme of the above-mentioned auxiliary device, the limiting valve extends into the fixed unit, and the limiting valve is connected with the water source and the total water inlet respectively, so as to connect or disconnect the water source and the total water inlet.

[0017] The beneficial effects of the above technical scheme are as follows:

[0018] When the above-mentioned auxiliary device is used, the movable unit and the fixed unit are arranged in an up-down mode, the bag is located in the fixed unit, the movable unit is located above the bag, the gas or liquid fills the bag through a certain pressure, the bag gradually expands, and the movable unit is continuously lifted upward in the process of expansion of the bag, the movable unit is continuously slid out of the fixed unit, and the seat plate is lifted upward. When the filling pressure is cancelled, the weight of the movable unit and the body weight of the user act on the bag, the gas or liquid flows out of the bag through the opening, the bag gradually shrinks, the movable unit is continuously slid into the fixed unit, and the seat plate is lowered, so that the two actions of sitting down and standing up of the person with difficulty in action are solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only an embodiment of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings

[0020] Figure 1 It is an exploded view of one embodiment of the auxiliary device of the present application;

[0021] Figure 2 It is a whole structure view of another embodiment of the auxiliary device of the present application;

[0022] Figure 3Figure 1 is an overall structural diagram of an auxiliary device according to the present application; Figure 2 Figure 2 is an exploded view of a controller of the auxiliary device of Figure 1;

[0023] Figure 4 Figure 3 is a back view of a handle of the controller of Figure 2; Figure 3

[0024] Figure 4(a)(b)(c) are working principle diagrams of the controller of the auxiliary device of Figure 1; Figure 2

[0025] Figure 6 Figure 5 is a bottom view of the controller of the auxiliary device of Figure 1; Figure 2

[0026] Figure 7 Figure 6 is an A-A sectional view of the auxiliary device of Figure 1; Figure 6

[0027] Figure 8 Figure 7 is a partial enlarged view of Figure 6; Figure 7

[0028] Figure 9 Figure 8 is an overall structural diagram of another embodiment of the auxiliary device according to the present application;

[0029] Figure 10 Figure 9 is a sectional view of the auxiliary device of Figure 8; Figure 9

[0030] Figure 10(a)(b) are working principle diagrams of a limiting valve in Figure 8; Figure 9

[0031] Figure 12 Figure 11 is a partial enlarged view of Figure 10; Figure 13 Figure 1 Figure 12 is a sectional view of another embodiment of the auxiliary device according to the present application;

[0032] Figure 14 Figure 13(a)(b) are working principle diagrams of a limiting valve in Figure 12;

[0033] Figure 14

[0034] Figure 16 Figure 14 is a partial enlarged view of Figure 13; Figure 17 Figure 15 is a use diagram of the auxiliary device and a toilet according to the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. ​​​​​​​​​​

[0036] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0038] Embodiment one

[0039] As shown in Figure 1 The auxiliary device of the present application comprises a seat plate 4, a movable unit 3, a fixed unit 2 and a bag 10. Figure 1 The bag 10 is shown in the unexpanded and expanded states.

[0040] The bag 10 is located in the fixed unit 2, and the bag 10 is provided with an opening for the entry and exit of gas or liquid, and the bag 10 expands or shrinks in the process of the entry and exit of gas or liquid.

[0041] The movable unit 3 is in sliding connection with the fixed unit 2, and the expansion or contraction of the bag 10 causes the movable unit 3 to slide out of or into the fixed unit 2.

[0042] The seat plate 4 is connected with the movable unit 3, and the seat plate 4 moves with the movable unit 3 in the process of sliding.

[0043] The above-mentioned auxiliary device is used in the following manner: the movable unit 3 and the fixed unit 2 are arranged in a vertical manner, the bag 10 is located in the fixed unit 2, the movable unit 3 is located above the bag 10, the bag 10 is filled with gas or liquid under a certain pressure, the bag 10 gradually expands, and the movable unit 3 is continuously lifted upwards during the expansion of the bag 10, the movable unit 3 continuously slides out of the fixed unit 2, and the seat plate 4 is lifted accordingly. When the filling pressure is removed, the weight of the movable unit 3 and the weight of the user act on the bag 10, the gas or liquid flows out of the bag 10 through the opening, the bag 10 gradually shrinks, the movable unit 3 continuously slides into the fixed unit 2, and the seat plate 4 is lowered accordingly, thereby solving the problem of sitting down and standing up for people with difficulty in moving.

[0044] The bag 10 in the present application is inflated or deflated by water in and out, for example. The opening of the bag 10 can be connected to a water inlet and outlet pipeline 8, which can be directly connected to a water source. Water enters the bag 10 through the water inlet and outlet pipeline 8, and the seat plate 4 is continuously lifted. Further, in order to control the height of the seat plate 4, a switch valve is provided between the water inlet and outlet pipeline 8 and the water source. When the switch valve is opened, water continuously enters the bag 10, and the seat plate 4 is continuously lifted. When the seat plate 4 is lifted to the appropriate height, the switch valve is closed, the bag 10 no longer fills with water, and the seat plate maintains a certain height and stops rising. When the seat plate needs to be lowered, the opening can be directly disconnected from the water source, and water gradually flows out through the water inlet and outlet pipeline 8, and the seat plate 4 is continuously lowered.

[0045] In the above-mentioned use mode, the water inlet and outlet pipeline 8 needs to be disconnected from the water source before water is discharged, and the process is relatively complicated, so it is different from the embodiment in Figure 1 The opening of the bag 10 can also be connected to two pipelines respectively, one for water inlet and one for water outlet, both of which can be controlled by humans and do not affect each other, and the height of the seat plate can also be controlled.

[0046] The above-mentioned water source can be a domestic water source or a commercial water source. The implementability of the present application is illustrated by connecting a domestic faucet nozzle to the water inlet and outlet pipeline 8.

[0047] According to the “Code for Design of Building Water Supply and Drainage” GB 50015, the minimum working water pressure of a domestic faucet nozzle is 0.05 MPa, which is equivalent to 0.51 kgf / cm2.

[0048] Assuming that the product is connected to the water outlet nozzle under the minimum working water pressure, an adult weighing 90 kg, for example, can be calculated.

[0049] According to the formula for physical pressure: pressure (P) = force (F) / force area (S), the force area is greater than 177 square centimeters to operate.

[0050] Therefore, the area of the S surface of the bag 10 is greater than 177 square centimeters.

[0051] The shape and material of the fixed unit, the movable unit and the seat plate are not limited in the present application.

[0052] Embodiment two

[0053] During the process of the seat plate 4 rising, the gas or liquid can be manually stopped from continuously entering the bag 10, so that the bag 10 stops expanding, the movable unit 3 no longer slides out of the fixed unit 2, and the seat plate 4 stops rising at a certain height and pauses. In addition, when the user cannot manually stop the seat plate 4 from rising, in order to ensure the safety of the use of the auxiliary device, when the preset limit height is reached, the auxiliary device can automatically stop the gas or liquid from continuously entering the bag 10, so that the bag 10 stops expanding, and the seat plate 4 can maintain the height unchanged. During the process of the seat plate 4 descending, the gas or liquid can also be manually stopped from continuously flowing out of the bag 10, so that the bag 10 stops shrinking, the movable unit 3 no longer slides into the fixed unit 3, and the seat plate 4 stops descending at a certain height and pauses.

[0054] As shown in Figure 2 In addition to the seat plate 4, the movable unit 3, the fixed unit 2 and the bag 10 mentioned above, the auxiliary device in the present application also includes a controller 9 for manually controlling the water in and out of the bag 10, and the controller 9 is provided with a total water inlet A, a working port B and a water outlet C. The total water inlet A is connected to the total water inlet pipeline 6, the working port B is connected to the water inlet and outlet pipeline 8, the water outlet C is connected to the water outlet pipeline 7, and the total water inlet pipeline 6 is connected to a water source.

[0055] The controller 9 is used to control the conduction or disconnection between the total water inlet pipeline 6 and the water inlet and outlet pipeline 8, and the water inlet and outlet pipeline 8 and the water outlet pipeline 7.

[0056] The auxiliary device is used in the form shown in Figure 2 The seat plate 4, the movable unit 3 and the fixed unit 2 are arranged in order from top to bottom, and the bag 10 is located inside the fixed unit 2. Unless the fixed unit 2 is made of transparent material, the bag 10 cannot be observed from the external structure of the auxiliary device.

[0057] The structures of the fixed unit 2 and the movable unit 3, the bag 10 and the controller 9 will be described below.

[0058] (1) Fixed unit 2

[0059] The fixed unit 2 can be placed on the ground and support the movable unit 3 and the seat plate 4.

[0060] The shape and size of the fixed unit 2 need to meet the stability of placement, and if necessary, the fixed unit 2 can be fixed to the ground with the help of floor screws or non-nailing glue. The shape and size of the fixed unit 2 are not limited in the present application.

[0061] The fixing unit 2 can be a cylindrical structure with a hollow cavity, and the bottom surface of the cylindrical structure is in contact with the ground. It can be understood that when the bottom surface of the cylinder is large enough, the fixing unit 2 can also be placed stably.

[0062] However, from the perspective of saving floor space and miniaturization, in order to improve the stability of the placement of the auxiliary equipment, a support frame 201 can also be provided on the outside of the fixed unit 2. The support frame 201 also contacts the ground, increasing the contact area with the ground and enhancing the stability of the placement of the fixed unit 2.

[0063] (II) Activity Unit 3

[0064] The movable unit 3 is slidably connected to the fixed unit 2. The movable unit 3 is fitted in the fixed unit 2. The movable unit 3 can slide in or out of the fixed unit 2, that is, the length of the movable unit 3 extending out of the fixed unit 2 is adjustable.

[0065] The movable unit 3 can be a hollow cylindrical structure. When both the fixed unit 2 and the movable unit 3 are cylindrical structures, the inner diameter of the fixed unit 2 is slightly larger than the outer diameter of the movable unit 3, so that the movable unit 3 is fitted inside the fixed unit 2.

[0066] The movable unit 3 can be in contact with the pouch 10, or the movable unit 3 can be located within the expansion trajectory of the pouch 10. It is only necessary to satisfy that the movable unit 3 slides along the fixed unit 2 during the process of the pouch 10 expanding or contracting until it returns to its original state.

[0067] (III) Pouch 10

[0068] The bag 10 is placed inside the hollow cavity of the fixed unit 2.

[0069] The bag 10 has an opening for liquid or gas to enter, which fills the bag 10 and causes it to expand. At the same time, the liquid or gas in the bag 10 can also be discharged through the opening, so that the bag 10 gradually contracts from an expanded state to its original state.

[0070] (iv) Controller 9

[0071] The controller 9 can be installed on the seat plate 4, or the controller 9 can be set independently. There is no specific limitation on the installation location of the controller 9.

[0072] like Figure 3 and Figure 4 As shown, the controller 9 includes a handle 11 and a control component 13, which are rotatably connected. Specifically, the handle 11 has a handle hole 1106, and the control component 13 has a protrusion 1302. The protrusion 1302 is inserted into the handle hole 1106, thereby the two are rotatably connected, and the handle 11 rotates along the protrusion 1302.

[0073] The control unit 13 is provided with a main water inlet A, a working port B and a water outlet C. The main water inlet A is connected to the main water inlet pipe 6, the working port B is connected to the water inlet and outlet pipes 8, the water inlet and outlet pipes 8 are connected to the opening of the bag 10, the water inlet and outlet pipes 8 can pass through the hollow cavity of the movable unit 3 and then connect to the opening of the bag 10 in the fixed unit 2, and the water outlet C is connected to the drain pipe 7.

[0074] The handle 11 has at least three independent areas. All three independent areas can be empty slots, or at least one of the three independent areas can be a solid structure. When the bag 10 is not filled with water or drained, the main water inlet A, the working port B and the water outlet C correspond to different independent areas respectively. The main water inlet A, the working port B and the water outlet C are not connected to each other.

[0075] When the bag 10 needs to be filled with water, the handle 11 rotates relative to the control component 13, so that the main water inlet A and the working port B fall into the same independent area. At this time, the main water inlet A and the working port B are connected, and water enters the bag 10 through the main water inlet pipe 6, the main water inlet A, the working port B, and the inlet and outlet water pipes 8, and the bag 10 gradually expands.

[0076] When the bag 10 needs to release water, the handle 11 rotates again relative to the control component 13, so that the working port B and the water outlet C fall into the same independent area. At this time, the working port B and the water outlet C are connected, and the water flows out or into the storage tank through the inlet and outlet pipes 8, the working port B, the water outlet C, and the drain pipe 7. The bag 10 gradually shrinks until it returns to its original shape.

[0077] To improve the seal between the handle 11 and the control element 13, the controller 9 also includes a seal 12, which is mounted on the handle 11. Figure 4 As shown, a sealing groove 1105 is provided on the back of the handle 11, and the seal 12 is embedded in the sealing groove 1105.

[0078] The structure and working principle of controller 9 are described in detail below with an example.

[0079] like Figure 4 As shown, the back of the handle 11 has a water channel 1101, a solid body 1102, a water channel 2 1103, and a solid body 2 1104, with the two water channels separated by solid bodies.

[0080] When the bag 10 does not need to be filled with water or drained, as shown in Figure 5(a), the main water inlet A, the working port B, and the water outlet C correspond to different independent areas. The main water inlet A corresponds to the water channel 1101, the working port B corresponds to the solid body 1102, and the water outlet C corresponds to the water channel 2 1103. The main water inlet A, the working port B, and the water outlet C are not connected to each other.

[0081] When the bag 10 needs to be filled with water, turn the handle 11 clockwise as shown in Figure 5(b). The main water inlet A and the working port B are simultaneously aligned with the water channel 1101. The main water inlet A and the working port B fall into the same independent area. The water outlet C is aligned with the water channel 2 1103. At this time, the main water inlet A and the working port B are connected. Water enters the bag 10 through the main water inlet pipe 6 and the water inlet and outlet pipes 8. The bag 10 gradually expands.

[0082] When the bag 10 needs to drain, turn the handle 11 counterclockwise, as shown in Figure 5(c). The working port B and the water outlet C are simultaneously aligned with the water channel 1103. The working port B and the water outlet C fall into the same independent area. The main water inlet A is aligned with the water channel 1101. At this time, the working port B and the water outlet C are connected. Water flows into the water tank through the inlet and outlet pipes 8 and the drain pipe 7. The bag 10 gradually returns to its original state.

[0083] In addition to the examples above, three spaced-apart water channels can also be provided on the back of the handle.

[0084] like Figures 6 to 8 As shown, in order to provide tactile and audible cues during the rotation of the handle 11, a positioning element 1107 and a spring 1108 are added to the handle 11 of the controller. The control element 13 has a positioning hole 1301. In the initial state, the spring 1108 is in a compressed state. When the handle 11 is rotated, the positioning element 1107 corresponds to any of the positioning holes 1301, and the spring 1108 tends to return to its natural state. The positioning element 1107 falls into the positioning hole 1301 and makes a sound.

[0085] The end of the positioning member 1107 has an angle, which facilitates its sliding out of the positioning hole 1301. When the positioning member 1107 is in the positioning hole 1301, rotating the controller 9 requires more force than when it is not in the positioning hole 1301. This serves to indicate the gear position.

[0086] Example 3

[0087] In Example 2, the height of the seat 4 is manually controlled by the controller 9. In Example 3, a limit valve 5 is added. When the preset limit height is reached, the auxiliary device can automatically stop the gas or liquid from entering the bag 10 through the limit valve 5, so that the water source is connected or disconnected from the main water inlet.

[0088] like Figure 9 and Figure 10 As shown, the limit valve 5 is installed on the fixed unit 2 and extends into the fixed unit 2. When the movable unit 3 moves to the position of the limit valve 5, the movable unit 3 cannot continue to rise.

[0089] like Figure 11(a) and11(b) As shown, the limiting valve 5 comprises a valve body having a hollow cavity, the valve body is provided with a port one 501 and a port two 506 penetrating the hollow cavity, the port one 501 is connected to the total water inlet pipeline 6, the port two 506 is connected to the auxiliary water inlet pipeline 16, and the auxiliary water inlet pipeline 16 is further connected to the total water inlet A of the controller 9.

[0090] The hollow cavity of the limiting valve 5 is provided with a stop block 502 and a spring 503 connected to the stop block 502, the stop block 502 extends into the fixed unit 2, the stop block 502 has a channel 504, and the channel 504 is responsible for the communication or disconnection of the port one 501 and the port two 506. The valve body has an opening 505 communicating with the port two 506, and the opening 505 is provided with a sealing ring 507.

[0091] In the water inlet state, the channel 504 on the stop block 502 communicates with the port one 501 and the opening 505, so that water can be inlet.

[0092] In the process of the expansion of the bladder bag 10, the movable unit 3 gradually rises, in the rising process, Figure 12 The protruding end cover 301 of the movable unit 3 shown in the middle extrudes the stop block 502, the stop block 502 gradually moves to the direction of the compressed spring 503, the spring 503 is in a compressed state, at this time, the channel 504 on the stop block 502 is misaligned with the opening 505, the stop block 502 blocks the opening 505, and the auxiliary water inlet pipeline 16 cannot inlet water, so that the bladder bag 10 cannot continue to expand.

[0093] In addition, as shown in Figure 13 The fixed unit 2 is further provided with a limiting block 202, the movable unit is first sleeved on the fixed unit 2, and then the limiting block 202 is arranged at the end of the fixed unit 2, and the limiting block 202 is also used to prevent the movable unit 3 from continuing to slide out.

[0094] Example four

[0095] The difference between example three and example four lies in the structure of the limiting valve 5.

[0096] As shown in Figure 14 , Fig. 15(a), Fig. 15(b), the limiting valve comprises an outer tube 15 and an inner tube 14, the outer tube 15 has a hollow cavity with two open ends, the lower opening 1501 is used to connect the total water inlet pipeline 6, and the upper opening 1501 is communicated with the total water inlet A through the auxiliary water inlet pipeline 16.

[0097] The inner tube 14 extends into the outer tube, a sealing ring is arranged between the outer tube 15 and the inner tube 14, the outer wall of the inner tube 14 has a protrusion 1402 extending outward, the inner tube 14 has a hollow cavity with one open end, and the inner tube 14 is further provided with an opening hole 1401 communicating with the hollow cavity.

[0098] A return spring 17 is provided between the inner tube 14 and the outer tube 15.

[0099] As shown in Figure 15(b), water gradually enters the bag 10 through the opening 1401. As the bag 10 gradually expands, the end cap 301 of the movable unit 3 gradually pushes the protrusion 1402 upward until the upper end face of the inner tube 14 blocks the opening 1501 on the upper side, stopping the water inflow.

[0100] As shown in Figure 15(a), during the gradual contraction of the pouch 10, the end cap 301 of the active unit 3 removes the force on the protrusion 1402. At this time, under the action of the return spring 17, the upper end face of the inner tube 14 no longer blocks the opening 1501 located on the upper side, and the opening 1401 is connected to the opening 1501.

[0101] The auxiliary devices in embodiments one to four of this invention can be used in conjunction with the toilet 1, such as... Figure 16 As shown, the fixing unit 2 can be installed on the side of the toilet 1 away from the water tank. The fixing unit 2 and the toilet 1 are an integral structure, and the toilet 1 provides a fixed support for the fixing unit 2, achieving stable placement of the fixing unit 2. The movable unit 3 is slidably connected to the fixing unit 2, and the seat 4 is installed on the movable unit 3. Or, as... Figure 17 As shown, the fixed unit 2 and the toilet 1 are independent structures. The auxiliary appliances and the toilet 1 are set separately, and the drain pipes 7 can be connected to the water tank of the toilet 1.

[0102] In addition to being used with the toilet 1 shown in the figure, the auxiliary device in this invention can also be used with a squat toilet.

[0103] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An auxiliary device, characterized in that, include: Seat plate, moving unit, fixing unit, bladder, controller and limit valve; The bag is located in the fixed unit and has an opening for gas or liquid to enter or exit. During the process of gas or liquid entering or exiting, the bag expands or contracts. The movable unit is slidably connected to the fixed unit. The movable unit is located above the pouch. The expansion or contraction of the pouch causes the movable unit to slide out of or into the fixed unit. The seat is connected to the movable unit; The controller is connected to the opening and a water source to control the water intake or output of the bag. The controller has a main inlet, a working outlet, and an outlet. The main inlet is connected to the water source, and the working outlet communicates with the opening. The controller includes a rotatably connected handle and a control component. The main inlet, the working outlet, and the outlet are all located on the control component. During rotation of the handle, the main inlet, the working outlet, and the outlet are independent of each other, or the working outlet communicates with the main inlet, or the working outlet communicates with the outlet. The handle has at least three independent areas. When the bag is not in or out of water, the main inlet, the working outlet, and the outlet correspond to different independent areas. When the bag is inlet, the main inlet and the working outlet are located in the same independent area. When the bag is out of water, the working outlet and the outlet are located in the same independent area. The limit valve is installed at the extreme position of the sliding of the movable unit; the main water inlet is connected to the water source through the main water inlet pipe, the working port is connected to the opening through the inlet and outlet pipes, and the outlet is connected to the drainage pipe.

2. The assistive device according to claim 1, characterized in that, The limit valve extends into the fixed unit, and the limit valve is connected to the water source and the main water inlet respectively, so that the water source and the main water inlet are connected or disconnected.

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