Comfortable multifunctional wheelchair and use method thereof

Abstract

The invention belongs to the technical field of wheelchairs, and particularly relates to a comfortable multifunctional wheelchair and a using method thereof.The comfortable multifunctional wheelchair comprises a wheelchair walking part and an adjusting stretcher part, the wheelchair walking part is connected with the adjusting stretcher part through an electric lifting stand column, and the wheelchair walking part drives the adjusting stretcher part to move on the ground; free switching between a lying posture and a sitting posture of a user can be achieved by adjusting the stretcher part. The stretcher adjusting part comprises a backrest conveying assembly and a seat plate assembly, and the seat plate assembly and the backrest conveying assembly are connected through a connecting assembly. A user sitting on the wheelchair can adjust the stretcher portion to achieve switching of a sitting posture and a lying posture, the situation that the patient moves outdoors can be avoided, heating and posture adjustment of the backrest of the wheelchair are facilitated, the comfort of the wheelchair during outdoor jolting can be improved, and the user experience is improved. Seat adjustment of a user sitting on a wheelchair in an outdoor bumpy environment is facilitated, and the user is prevented from sliding downwards on an outdoor bumpy road section.

Description

Technical Field

[0001] The present invention relates to the technical field of wheelchairs, and in particular to a comfortable multifunctional wheelchair and a use method thereof. Background Art

[0002] For patients with difficulty walking or paralysis, in daily life, long-term use of wheelchairs may bring health risks and discomfort, as the current seats that can only be used for sitting cannot be moved flat. At the same time, frequent transfers between wheelchairs and beds require multiple manual transfers of patients, which brings a huge workload to caregivers. Although some wheelchairs have adjustable backrests, their overall length is short and the comfort level is not high.

[0003] In view of the above-mentioned defects, the inventors of the present invention finally obtained the present invention after a long period of research and practice. Summary of the invention

[0004] In order to solve the above technical defects, the technical solution adopted by the present invention is to provide a multifunctional wheelchair, including a wheelchair running part and an adjustable stretcher part, wherein the adjustable stretcher part is connected to the wheelchair running part through a connecting piece, and the wheelchair running part drives the adjustable stretcher part to move on the ground;

[0005] The adjustable stretcher part comprises a conveying backrest assembly and a seat plate assembly, wherein the conveying backrest assembly and the seat plate assembly are connected by a connecting assembly, and the connecting assembly is arranged on both sides of the conveying backrest assembly;

[0006] The conveying backrest assembly is provided with a conveying part, which includes a conveying roller, a conveying belt and a conveying power member. The conveying belt is wound around the conveying roller, and the conveying power member is drivingly connected to the conveying roller.

[0007] Furthermore: a toilet bowl is placed under the seat of the wheelchair, and the electric telescopic rod is unfolded to push the nozzle to move above the toilet bowl.

[0008] Furthermore: the handle of the wheelchair is connected to the conveying backrest assembly through the armrest electric cylinder, and the conveying backrest assembly changes the backrest angle of the adapter assembly through the armrest electric cylinder.

[0009] Further: the connecting assembly includes a lifting track and a lifting rack.

[0010] Furthermore: a driving assembly is installed at the backrest of the wheelchair, and the driving assembly includes a lifting motor, a lifting gear shaft and a gear. The power shaft of the lifting motor is connected to the lifting gear shaft through a gear. The gear of the lifting gear shaft is meshed with a lifting rack and a lifting track. The power output of the lifting motor drives the height adjustment of the adapter assembly through the lifting gear shaft, the lifting rack and the lifting track in sequence.

[0011] Further: the adapter assembly is respectively equipped with a first belt roller, a second belt roller and a third belt roller at the top, middle and bottom, the belt layer passes through the first belt roller, the second belt roller and the third belt roller from top to bottom, the first belt roller and the third belt roller are connected to a belt motor through a belt, and the belt motor is started to drive the belt layer to move.

[0012] The circulation assembly includes a heating water tank and a plurality of silicone tubes. The heating water tank is equipped with an electric heating structure. The water outlet of the heating water tank is connected to a water pump. The pressurized water flow passing through the water pump is divided into two groups by an electric three-way ball valve.

[0013] A set of heating water flows through a water pipe, passes through a plurality of the silicone tubes and is connected to a corresponding three-way pipe, and both sides of the three-way pipe selectively flow back to the heating water tank through a pressure reducing valve and a normally closed electromagnetic water valve;

[0014] Another heated water flow is connected to a corresponding nozzle through a water pipe, and the nozzle is fixed to the telescopic end of the electric telescopic rod;

[0015] When the normally closed electromagnetic water valve is closed and the pressure reducing valve is pressurized, the silicone tube expands under high pressure.

[0016] Further: Several of the silicone tubes are respectively arranged on the head and waist positions of the wheelchair backrest, and a bracket for fixing a limit frame is installed on the backrest of the wheelchair. The limit frame is semi-frame-shaped, and the opening direction corresponds to the backrest side of the wheelchair. The limit frame is engaged with the silicone tube, and the silicone tube expands in one direction under the restriction of the limit frame.

[0017] Compared with the prior art, the technical effects and advantages of the present invention are as follows:

[0018] 1) The comfortable multifunctional wheelchair of the present invention can realize the mutual conversion of two states. The patient can rest in a lying position by adjusting the backrest angle, and the backrest height can be adjusted to meet the needs of patients of different heights. The conveying part can adjust the position of the patient on the wheelchair so that the user's legs can be placed horizontally to improve the overall comfort. The backrest can be heated by the circulation component to meet the patient's winter use needs.

[0019] 2) The present invention can easily transfer a user from a wheelchair to a bed, or from a bed to a wheelchair through the combined movement of the electric lifting column, the armrest electric cylinder and the backrest assembly, thereby enabling the user to move freely between the bed and the wheelchair without the need for other auxiliary tools and assistants. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the comfortable multifunctional wheelchair of the present invention;

[0021] Figure 2This is a schematic diagram of the wheelchair back structure of the comfortable multifunctional wheelchair of the present invention;

[0022] Figure 3 It is a schematic structural diagram of a drive assembly and a backrest assembly of a comfortable multifunctional wheelchair of the present invention;

[0023] Figure 4 It is a schematic diagram of the circulation component structure of the comfortable multifunctional wheelchair of the present invention;

[0024] Figure 5 It is a rear view schematic diagram of a comfortable multifunctional wheelchair of the present invention;

[0025] Figure 6 The comfortable multifunctional wheelchair of the present invention Figure 4 A partial enlarged schematic diagram;

[0026] Figure 7 The comfortable multifunctional wheelchair of the present invention Figure 3 A partial enlarged schematic diagram.

[0027] The accompanying drawings are marked as follows: 1. wheelchair; 2. armrest electric cylinder; 3. adapter assembly; 31. first belt roller; 32. second belt roller; 33. third belt roller; 34. belt layer; 4. electric drive moving wheel; 5. backrest assembly; 51. lifting track; 52. tensioning gear; 53. lifting rack; 6. drive assembly; 61. lifting motor; 62. lifting gear shaft; 63. belt motor; 7. bracket; 71. limit frame; 8. circulation assembly; 81. heating water tank; 82. water pump; 83. electric three-way ball valve; 84. water purifier; 85. silicone tube; 86. nozzle; 87. normally closed electromagnetic water valve; 88. three-way pipe; 89. pressure reducing valve; 9. bedpan; 10. electric telescopic rod; 11. electric lifting column. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the structures involved in the present invention are not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0029] Example:

[0030] See also Figure 1-7The present invention provides a technical solution: a comfortable multifunctional wheelchair, comprising a wheelchair 1, wherein the seat height of the wheelchair 1 is adjusted by an electric lifting column 11, an electric drive moving wheel 4 is installed at the bottom of the wheelchair 1, a battery pack is installed at the bottom of the wheelchair 1 for providing energy, and the battery pack has a charging interface, backrest components 5 are installed on both sides of the backrest of the wheelchair 1, and an up-and-down moving adapter component 3 is installed between two groups of the backrest components 5. The up-and-down moving adapter component 3 adjusts the height of the wheelchair 1 backrest, and the adapter component 3 includes a belt layer 34, the belt layer 34 is made of cat claw cloth material, and its surface presents an uneven granular shape, so that it has super strong friction, the belt layer 34 slides up and down in the adapter component 3, and a circulation component 8 is installed in the wheelchair 1;

[0031] The circulation component 8 includes a heating water tank 81 and a plurality of silicone tubes 85. The heating water tank 81 has a water inlet and outlet pipe. The silicone tube 85 is made of silicone material. When the internal pressure gradually increases, its diameter also expands. The heating water tank 81 has an electric heating structure built in. The electric heating structure is specifically: a heating coil wound by a relatively thin metal tube, an electric heating wire is installed in the tube, and an insulating material such as magnesium oxide powder is poured in to fix the electric heating wire so that it does not contact the tube wall, thereby completing the heating of the water in the heating water tank 81. It should be noted that the heating water tank 81 The temperature inside the heating water tank 81 needs to be controlled by a temperature controller to keep the temperature inside the heating water tank 81 within a threshold range, with a reference of 20°C-38°C. Since the user sitting in the wheelchair 1 is often a paralyzed person, his or her perception of temperature is slower than that of ordinary people, and it is more likely to cause low-temperature burns. Therefore, it is necessary to control the water temperature inside the heating water tank 81. The water outlet of the heating water tank 81 is connected to a water pump 82. The pressurized water flow passing through the water pump 82 is divided into two groups by an electric three-way ball valve 83. The direction of the water flow can be changed by starting the electric three-way ball valve 83.

[0032] A set of water flows through a water pipe through a plurality of the silicone tubes 85 and is connected to a corresponding three-way pipe 88. The two sides of the three-way pipe 88 selectively flow back to the heating water tank 81 through a pressure reducing valve 89 and a normally closed electromagnetic water valve 87. The plurality of silicone tubes 85 are respectively arranged at the head and waist positions on the backrest of the wheelchair 1. Figure 2 In the actual production process, the number of silicone tubes 85 can be increased at the waist to provide more comprehensive support for the waist. The handle of the wheelchair 1 is connected to the backrest assembly 5 through the armrest electric cylinder 2. The backrest assembly 5 changes the backrest angle of the adapter assembly 3 through the armrest electric cylinder 2. By starting the armrest electric cylinder 2 to extend, the backrest assembly 5 rotates on its bottom shaft, so that the backrest assembly 5 drives the adapter assembly 3 and the seat surface of the wheelchair 1 to adjust the angle formed;

[0033] When the pressure reducing valve 89 is closed and the normally closed electromagnetic water valve 87 is opened, the water temperature in the heating water tank 81 is increased by starting the heating component in the heating water tank 81, and the water in the heating water tank 81 is pumped out by starting the water pump 82. The water flows through a water pipe through several silicone tubes 85 and then returns to the heating water tank 81 through the three-way pipe 88 and the normally closed electromagnetic water valve 87. The backrest of the wheelchair 1 is heated by the water temperature passing through the silicone tube 85. When outdoors, the backrest is heated to maintain the temperature of the user of the wheelchair 1.

[0034] The backrest assembly 5 includes a lifting rail 51, a tensioning gear 52 and a lifting rack 53. A driving assembly 6 is installed at the backrest of the wheelchair 1. The driving assembly 6 includes a lifting motor 61, a lifting gear shaft 62 and a belt motor 63. The power shaft of the lifting motor 61 is connected to the lifting gear shaft 62 through a gear. The gear of the lifting gear shaft 62 is meshed with the lifting rack 53 and the lifting rail 51. The power output of the lifting motor 61 drives the height adjustment of the adapter assembly 3 through the lifting gear shaft 62, the lifting rack 53 and the lifting rail 51 in sequence.

[0035] When the lifting motor 61 is started in the forward direction, the lifting gear shaft 62 rotates in the forward direction, and then the driving gear of the lifting gear shaft 62 rotates in the forward direction between the lifting rack 53 and the lifting track 51, so that the driving tooth engages and rotates upward on the lifting rack 53, and at the same time, the lifting slide rail drives the adapter assembly 3 to expand together, so as to achieve the effect of lifting or extending the height of the adapter assembly 3. When the lifting motor 61 is started in the reverse direction, the lifting gear shaft 62 rotates in the reverse direction, and then the driving gear of the lifting gear shaft 62 rotates in the reverse direction between the lifting rack 53 and the lifting track 51, so that the driving tooth engages and rotates downward on the lifting rack 53, and at the same time, the lifting slide rail drives the adapter assembly 3 to shrink together, so as to achieve the effect of lowering or shrinking the height of the adapter assembly 3.

[0036] The adapter assembly 3 is respectively provided with a first belt roller 31, a second belt roller 32 and a third belt roller 33 at the top, the middle and the bottom. The belt layer 34 passes through the first belt roller 31, the second belt roller 32 and the third belt roller 33 from top to bottom. The first belt roller 31 and the third belt roller 33 are connected to a belt motor 63 through a belt. The belt motor 63 is started to drive the belt layer 34 to move. The start signal of the water pump 82 and the pressure signal output end of the pressure reducing valve 89 are connected to the signal input end of the belt motor 63.

[0037] In outdoor environments, the road surface is often not flat and is bumpy. The user on the wheelchair 1 lacks leg perception or even perception below the waist, so when the user sits on the wheelchair 1, he will be affected by the inertia of movement and the bumps, and the user will continue to slide downward, affecting the user's sitting posture. When the wheelchair 1 turns on the backrest heating, or when the backrest of the wheelchair 1 is adjusted, the belt is started to drive the first belt roller 31 and the third belt roller 33 to rotate and drive the belt layer 34 to move, and the patient sitting on the wheelchair 1 is driven by friction to adjust the seat, that is, the dragging force of the belt layer 34 moving upward and the friction of the material selected for the belt layer 34 are used to pull the patient's waist upward, thereby forming an upward lifting force for the user's sitting posture, and at the same time making the user's waist fit the entire adapter assembly 3, so that the user's waist is more in line with the curve caused by the expansion of the silicone tube 85, and the user's waist is better supported.

[0038] Another water flow is connected to the corresponding nozzle 86 through the water pipe. The nozzle 86 is fixed to the telescopic end of the electric telescopic rod 10. A toilet bowl 9 is placed under the seat of the wheelchair 1. The electric telescopic rod 10 is unfolded to push the nozzle 86 to move above the toilet bowl 9.

[0039] The toilet bowl 9 is placed under the seat of the wheelchair 1, and then the electric telescopic rod 10 is started to expand, so that the nozzle 86 moves, so that the water outlet direction of the nozzle 86 faces the buttocks of the user sitting on the wheelchair 1, and the electric three-way ball valve 83 is started to make the water flow through the water pipe and the nozzle 86 to spray out, so as to achieve the purpose of washing the user's buttocks, which can assist the caregiver to complete the treatment of the urination and defecation of the user sitting on the wheelchair 1 outdoors, and can avoid the situation of moving the patient outdoors;

[0040] When the normally closed electromagnetic water valve 87 is closed and the pressure reducing valve 89 is in a pressurized state, the silicone tube 85 expands under high pressure, and a bracket 7 for fixing a limit frame 71 is installed at the backrest of the wheelchair 1. The limit frame 71 is semi-frame-shaped, and the opening direction corresponds to the backrest side of the wheelchair 1. The limit frame 71 is engaged with the silicone tube 85, and the silicone tube 85 expands in one direction under the restriction of the limit frame 71.

[0041] When the normally closed electromagnetic water valve 87 is in the closed state, the water pressure in the silicone tube 85 is increased by adjusting the pressure value of the pressure reducing valve 89, so that the silicone tube 85 expands in one direction under the restriction of the limit frame 71, thereby adjusting the height of the backrest of the wheelchair 1, and controlling the height of the backrest bulge by the change of pressure, thereby adjusting and supporting the sitting posture of the user on the wheelchair 1, and preventing the user on the wheelchair 1 from lacking lumbar support. Specific embodiment 2

[0043] Wherein, a water purifier 84 is arranged between the electric three-way ball valve 83 and the nozzle 86 .

[0044] The water purifier 84 may use a medium filter to filter large particles such as mud, rust impurities, etc. in the water. Specific embodiment 3

[0046] The seat height of the wheelchair 1 is adjusted by starting the electric lifting column 11 so that the seat height is the same as the bed height, and then the armrest electric cylinder 2 is started to drive the backrest assembly 5 and the adapter assembly 3 to unfold, so that the adapter assembly 3 and the wheelchair 1 seat are at an obtuse angle of 180°-200°, and the top of the adapter assembly 3 is brought close to the bed, and then the belt motor 63 is started to drive the first belt roller 31 and the second belt roller 32 to rotate, so that the belt layer 34 moves unidirectionally, so that the user lying on the backrest moves closer to the bed along the movement of the belt layer 34, which can reduce the carrying distance of the wheelchair 1 user by the assistant.

[0047] For details, please refer to:

[0048] The wheelchair transfer from the wheelchair to the bed works as follows:

[0049] 1. Raise the electric lifting column 11 of the wheelchair 1 so that the bottom surface of the wheelchair 1 seat is higher than the bed surface, and raise the backrest assembly 5;

[0050] 2. Adjust the running direction of the wheelchair 1 so that the back of the wheelchair 1 faces the head of the bed;

[0051] 3. Move the wheelchair 1 backward so that the rear wheels enter the bottom of the bed and the seat of the wheelchair 1 rises above the bed;

[0052] 4. Extend the armrest electric cylinder 2, adjust the angle between the backrest assembly 5 and the seat to between 180° and 200°, and the human body lies flat on the backrest assembly 5;

[0053] 5. Start the belt motor 63 to drive the first belt roller 31 and the second belt roller 32 to rotate, so that the belt layer 34 moves toward the head of the bed, and the human body enters the bed along with the conveyor belt;

[0054] 6. Start the backrest assembly 5 to make the whole body slide forward, and the human body slides forward through the backrest assembly 5;

[0055] 7. The belt layer 34 continues to move toward the bedside, and at the same time, the electric drive moving wheel 4 is started to move in the opposite direction of the bedside, and the human body is separated from the conveying part of the wheelchair 1;

[0056] 8. Retract the armrest electric cylinder 2, adjust the angle between the backrest assembly 5 and the seat to between 90° and 120°, and start the backrest assembly 5 to slide downward;

[0057] The method of transferring the wheelchair 1 user from the bed to the wheelchair 1 is as follows:

[0058] 1. Raise the electric lifting column 11 of the wheelchair 1 so that the bottom surface of the wheelchair 1 seat is higher than the bed surface, and raise the backrest assembly 5;

[0059] 2 Adjust the running direction of the wheelchair 1 so that the back of the wheelchair 1 faces the head of the bed;

[0060] 3. Move the wheelchair 1 backward so that the rear wheels enter the bottom of the bed, and insert the backrest assembly 5 of the wheelchair 1 into the bottom of the human body;

[0061] 4. Extend the armrest electric cylinder 2, adjust the angle between the backrest assembly 5 and the seat to between 180° and 200°, and the human body lies flat on the backrest assembly 5;

[0062] 5. Start the belt motor 63 to drive the first belt roller 31 and the second belt roller 32 to rotate, so that the belt layer 34 moves toward the end of the bed, and start the backrest assembly 5 to slide the whole forward, and start the electric drive moving wheel 4 to move toward the head of the bed, so that the human body slides toward the wheelchair 1 through the backrest assembly 5;

[0063] 7. When the buttocks of the human body enter the seat plate position, the belt layer 34 stops moving;

[0064] 8. Retract the armrest electric cylinder 2, adjust the angle between the backrest assembly 5 and the seat to between 90° and 120°, and start the backrest assembly 5 to slide downward.

[0065] The specific working principle is to connect the external power cord to the battery pack to complete the charging of the wheelchair 1, and start the armrest electric cylinder 2 to drive the backrest assembly 5 and the adapter assembly 3 to unfold, so that the adapter assembly 3 and the wheelchair 1 seat are at an obtuse angle, and the top of the adapter assembly 3 is close to the bed body, and then the user's legs are close to the wheelchair 1 seat along the adapter assembly 3, and the user's buttocks are completely placed on the movable parts, and the belt motor 63 is started to drive the first belt drum and the third belt drum to rotate, so that the belt layer 34 moves unidirectionally, so that the user lying on the bed moves along the movement of the belt layer 34 to get close to the wheelchair 1 seat, and the user's buttocks are completely located on the wheelchair 1 seat, and the armrest electric cylinder 2 is started to drive the backrest assembly 5 and the adapter assembly 3 to reset;

[0066] The wheelchair 1 is driven to move by starting the electric drive moving wheel 4;

[0067] When the outdoor environment is cold, the water temperature in the heating water tank 81 is increased by starting the heating component in the heating water tank 81, and the water flow in the heating water tank 81 is pumped out by starting the water pump 82, and then flows through the water pipe through a plurality of silicone tubes 85 and then returns to the heating water tank 81 through the three-way pipe 88 and the normally closed electromagnetic water valve 87, and the backrest of the wheelchair 1 is heated by the water temperature passing through the silicone tube 85;

[0068] When the normally closed electromagnetic water valve 87 is closed, the water pressure in the silicone tube 85 is increased by adjusting the pressure value of the pressure reducing valve 89, so that the silicone tube 85 expands in one direction under the restriction of the limit frame 71, thereby adjusting the height of the backrest of the wheelchair 1;

[0069] When the user feels that he or she is gradually sliding down and the sitting posture is becoming more and more uncomfortable during outdoor movement, the belt is started to drive the first belt roller 31 and the third belt roller 33 to rotate and drive the belt layer 34 to move, and the patient sitting on the wheelchair 1 is driven to adjust the seat by friction, that is, the dragging force of the belt layer 34 moving upward and the friction of the material selected for the belt layer 34 are used to pull the patient's waist upward, thereby forming an upward lifting force for the user's sitting posture, and at the same time, the user's waist is made to fit the entire adapter component 3, so that the user's waist is more in line with the curve brought about by the expansion of the silicone tube 85, and the user's waist is better supported. At the same time, the user's sitting posture needs to be adjusted in the following situations: when the wheelchair 1 turns on the backrest heating to make the user's back fit more closely to the adapter component 3, or when the backrest of the wheelchair 1 is adjusted in posture, the expansion of the silicone tube 85 will prevent the user's sitting posture from sliding down;

[0070] After reaching the bedside, the armrest electric cylinder 2 is started to drive the backrest assembly 5 and the adapter assembly 3 to unfold, so that the adapter assembly 3 and the wheelchair 1 seat are at an obtuse angle, and the top of the adapter assembly 3 is brought close to the bed body, and then the first belt drum and the third belt drum are driven to rotate by starting the belt motor 63, so that the belt layer 34 moves unidirectionally, so that the user lying on the backrest moves closer to the bed body along the movement of the belt layer 34.

[0071] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A comfortable multifunctional wheelchair, comprising a wheelchair (1), wherein the bottom of the wheelchair (1) is provided with electric drive moving wheels (4), the seat height of the wheelchair (1) is adjusted by an electric lifting column (11), and characterized in that: Backrest assemblies (5) are respectively installed on both sides of the backrest of the wheelchair (1); an adapter assembly (3) that moves up and down is installed between the two groups of backrest assemblies (5); the adapter assembly (3) includes a belt layer (34); the belt layer (34) rotates up and down in the adapter assembly (3); and a circulation assembly (8) is installed in the wheelchair (1); The circulation component (8) comprises a heating water tank (81) and a plurality of silicone tubes (85); the heating water tank (81) has an electric heating structure built in; the water outlet of the heating water tank (81) is connected to a water pump (82); the pressurized water flow passing through the water pump (82) is divided into two groups by an electric three-way ball valve (83); A group of water flows through a water pipe through a plurality of the silicone tubes (85) and is connected to a corresponding three-way pipe (88), and both sides of the three-way pipe (88) selectively flow back to the heating water tank (81) through a pressure reducing valve (89) and a normally closed electromagnetic water valve (87); Another water flow is connected to a corresponding nozzle (86) through a water pipe, and the nozzle (86) is fixed to the telescopic end of the electric telescopic rod (10); When the normally closed electromagnetic water valve (87) is closed and the pressure reducing valve (89) is in the pressurized state, the silicone tube (85) expands under high pressure.

2. A comfortable multifunctional wheelchair according to claim 1, characterized in that: A plurality of silicone tubes (85) are respectively arranged at the head and waist positions on the backrest of the wheelchair (1); a bracket (7) for fixing a limit frame (71) is installed at the backrest of the wheelchair (1); the limit frame (71) is semi-frame-shaped, and the opening direction corresponds to the backrest side of the wheelchair (1); the limit frame (71) is engaged with the silicone tube (85), and the silicone tube (85) expands in a single direction under the restriction of the limit frame (71).

3. A comfortable multifunctional wheelchair according to claim 1, characterized in that: A toilet bowl (9) is placed under the seat of the wheelchair (1), and the electric telescopic rod (10) is unfolded to push the spray head (86) to move above the toilet bowl (9).

4. A comfortable multifunctional wheelchair according to claim 1, characterized in that: The armrest of the wheelchair (1) is connected to a backrest assembly (5) via an armrest electric cylinder (2), and the backrest assembly (5) changes the backrest angle of the adapter assembly (3) via the armrest electric cylinder (2), and the angle is between 90° and 200°.

5. A comfortable multifunctional wheelchair according to claim 1, characterized in that: The backrest assembly (5) comprises a lifting track (51), a tensioning gear (52) and a lifting rack (53).

6. A comfortable multifunctional wheelchair according to claim 5, characterized in that: A driving assembly (6) is installed at the backrest of the wheelchair (1), and the driving assembly (6) comprises a lifting motor (61), a lifting gear shaft (62) and a belt motor (63). The power shaft of the lifting motor (61) is connected to the lifting gear shaft (62) via a gear, and the gear of the lifting gear shaft (62) is meshed with a lifting rack (53) and a lifting track (51). The power output of the lifting motor (61) drives the height adjustment of the adapter assembly (3) through the lifting gear shaft (62), the lifting rack (53) and the lifting track (51) in sequence.

7. A comfortable multifunctional wheelchair according to claim 1, characterized in that: The adapter assembly (3) is respectively provided with a first belt roller (31), a second belt roller (32) and a third belt roller (33) at the top, the middle and the bottom. The belt layer (34) passes through the first belt roller (31), the second belt roller (32) and the third belt roller (33) from top to bottom. The first belt roller (31) and the third belt roller (33) are connected to a belt motor (63) via a belt. When the belt motor (63) is started, it drives the belt layer (34) to move.

8. A comfortable multifunctional wheelchair according to claim 7, characterized in that: The start signal of the water pump (82) and the pressure signal output end of the pressure reducing valve (89) are connected to the signal input end of the belt motor (63).

9. A comfortable multifunctional wheelchair according to claim 1, characterized in that: A water purifier (84) is provided between the electric three-way ball valve (83) and the spray head (86).

10. A method for using a comfortable multifunctional wheelchair, characterized in that: Using the multifunctional wheelchair described in any one of claims 1 to 9, the method for transporting the wheelchair to the bed is as follows: a. Raise the electric lifting column (11) of the wheelchair (1) so that the bottom surface of the seat of the wheelchair (1) is higher than the bed surface, and raise the backrest assembly (5); b. adjusting the running direction of the wheelchair (1) so that the back of the wheelchair (1) faces the head of the bed; c. Move the wheelchair (1) backward so that the rear wheels enter the bottom of the bed and the seat of the wheelchair (1) rises above the bed; d. Extend the armrest electric cylinder (2) to adjust the angle between the backrest assembly (5) and the seat to between 180° and 200°, so that the human body lies flat on the backrest assembly (5); e. Starting the belt motor (63) to drive the first belt roller (31) and the second belt roller (32) to rotate, so that the belt layer (34) moves toward the head of the bed, and the human body enters the bed along with the conveying belt; f. Start the backrest assembly (5) to make the whole body slide forward, and the human body slides forward through the backrest assembly (5); g. The belt layer (34) continues to move toward the bedside, and at the same time the electrically driven moving wheel (4) is started to move in the opposite direction of the bedside, so that the human body is separated from the conveying part of the wheelchair (1); h. Retract the armrest electric cylinder (2), adjust the angle between the backrest assembly (5) and the seat to between 90° and 120°, and start the backrest assembly (5) to slide downward.

11. A method for using a comfortable multifunctional wheelchair, characterized in that: Using the multifunctional wheelchair described in any one of claims 1 to 9, the method for transferring a wheelchair user from a bed to the wheelchair is as follows: S1, raising the electric lifting column (11) of the wheelchair (1) so that the bottom surface of the seat of the wheelchair (1) is higher than the bed surface, and raising the backrest assembly (5); S2, adjusting the running direction of the wheelchair (1) so that the back of the wheelchair (1) faces the head of the bed; S3, extending the armrest electric cylinder (2) to adjust the angle of the backrest assembly (5) and the seat to between 180° and 200°; S4, the wheelchair (1) is moved backward so that the rear wheels enter the bottom of the bed, and the backrest assembly (5) of the wheelchair (1) is inserted into the bottom of the human body; S5, starting the belt motor (63) to drive the first belt roller (31) and the second belt roller (32) to rotate, so that the belt layer (34) moves toward the end of the bed, and at the same time starting the backrest assembly (5) to make the whole slide forward, and at the same time starting the electric drive moving wheel (4) to move toward the head of the bed, so that the human body slides toward the wheelchair (1) through the backrest assembly (5); S6, when the buttocks of the human body enter the seat plate position, the movement of the belt layer (34) is stopped; S7, retract the armrest electric cylinder (2), adjust the angle between the backrest assembly (5) and the seat to between 90° and 120°, and start the backrest assembly (5) to slide downward.

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