A multifunctional wheelchair for toilet use

Abstract

The application provides a multifunctional wheelchair for toilet, and belongs to the technical field of medical devices. The multifunctional wheelchair for toilet solves the technical problems of the inconvenience of the elderly and the disabled in toilet and life. The multifunctional wheelchair for toilet comprises a seat plate, a backrest, a leg rest, a pedal, two handrails and two bases. The base is provided with a roller, a driving motor capable of driving the roller to rotate, an extension piece one capable of driving the rear end of the seat plate to swing around the front end, an extension piece two capable of driving the leg rest to swing around the front end of the seat plate, an extension piece three capable of driving the backrest to swing around the rear end of the seat plate, and an extension piece four capable of driving the handrails to move up and down. The seat plate is provided with a toilet opening. The toilet opening is provided with two baffles. The base is provided with a lifting assembly connected with the baffles. The seat plate is provided with a driving assembly capable of making the two bases and the baffles approach or move away from each other. The wheelchair has the functions of assisting standing, freely changing postures and converting into a bed type. The user can independently use the toilet on the wheelchair, and the convenience of toilet and life is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical devices, and relates to a multifunctional wheelchair capable of defecating. BACKGROUND

[0002] China is not only the country with the largest population in the world, but also the country with the largest number of old people; meanwhile, there are tens of millions of lower limb disabled patients, and the limb movement function is seriously restricted, which seriously affects their action ability and life quality. In order to reduce the burden on families and society, the most urgent thing is to solve the travel and defecation problems of these patients, among which the defecation problem is more important. The tool used by the old and the disabled is mainly a wheelchair. The general wheelchair has too few functions for the old and the disabled, and cannot meet their daily needs.

[0003] A wheelchair capable of assisting standing and defecating is disclosed in a Chinese patent (publication number: CN212346947U; publication date: January 15, 2021), which comprises a wheelchair body, a control system and a linkage type overall mechanism, wherein the control system is installed below the right handrail of the wheelchair, and the linkage type overall mechanism is installed at the lower part of the wheelchair; the wheelchair is a common hand-push type wheelchair, and the linkage type overall mechanism comprises a folding mechanism, a foldable seat cushion and a movable toilet bowl. The folding mechanism comprises folding mechanism I and folding mechanism II. The folding mechanism I comprises an electric push rod I, a fixed support I, a fixed support II, a backrest and a seat cushion. The folding mechanism II comprises an electric push rod II, an electric push rod III, a fixed support III, a fixed support IV, a fixed support V, a fixed support VI and a seat cushion. The electric push rod I is installed on the upper part of the fixed support II of the fixed support I at the back of the backrest and the fixed support II connecting the backrest and the seat cushion. The electric push rod II is installed on the upper part of the fixed support IV of the fixed support III at the lower left side of the seat cushion and the left lower side frame. The electric push rod III is installed on the upper part of the fixed support VI of the fixed support V at the lower right side of the seat cushion and the right lower side frame. The foldable seat cushion is installed inside the seat cushion and moves around the fixed support VII as the axis. The movable toilet bowl comprises a slide and a sanitary toilet bowl. The slide comprises a slide I and a slide II. The slide I is installed on the upper part of the fixed support VIII of the front left lower side frame and the fixed support IX of the rear left lower side frame. The slide II is installed on the upper part of the fixed support X of the front right lower side frame and the fixed support XI of the rear right lower side frame. The sanitary toilet bowl is installed on the upper part of the slide I and the slide II.

[0004] In the wheelchair capable of assisting standing and defecating disclosed in the above patent document, the sanitary toilet bowl is placed on the wheelchair to facilitate the user to defecate, but the sanitary toilet bowl needs to be helped to pour by an assistant, and the old or disabled person needs to be helped to transfer from the wheelchair to the bed by an assistant, which is relatively troublesome. SUMMARY

[0005] The present application is directed to the above-mentioned problems existing in the prior art, and provides a multifunctional wheelchair for toilet, and the technical problem to be solved by the present application is how to improve the convenience of the elderly and the disabled in toilet and life.

[0006] The object of the present application can be achieved by the following technical solutions:

[0007] A multifunctional wheelchair for toilet, comprising a seat plate, a backrest, a back cushion, a leg rest and a pedal, characterized in that the leg rest and the backrest are respectively hinged at the front and rear ends of the seat plate, the pedal is transversely arranged at the lower end of the leg rest, the back cushion is arranged at the upper end of the backrest, each side of the seat plate is provided with a handrail, and each of the two handrails is provided with a base capable of supporting the seat plate below, each of the bases is provided with a roller, a driving motor capable of driving the roller to rotate, an extension piece one capable of driving the rear end of the seat plate to swing around the front end, an extension piece two capable of driving the leg rest to swing around the front end of the seat plate, an extension piece three capable of driving the backrest to swing around the rear end of the seat plate, and an extension piece four capable of driving the corresponding handrail to move up and down, a toilet opening compatible with a toilet bowl is formed in the middle of the seat plate, two baffles capable of being closed in cooperation are arranged in the toilet opening, each of the two bases is provided with a lifting assembly connected with the corresponding baffle and capable of driving the baffle to move up and down, and the lower side of the seat plate is further provided with a driving assembly capable of moving the two bases and the baffles connected therewith closer to or away from each other.

[0008] The working principle of the present application is as follows: in the present application, when the user needs to use the toilet, the two lifting assemblies drive the corresponding baffles to move downward, the driving assembly drives the two bases and the baffles connected therewith to move to the left and right sides of the seat plate to leave a space below the seat plate to accommodate the toilet bowl, the driving motor drives the roller to rotate to move the wheelchair to the position where the toilet opening is located directly above the toilet bowl, and the user can use the toilet independently; the extension piece one drives the rear end of the seat plate to swing around the front end, which can assist the user to stand up; the extension piece two drives the leg rest to swing around the front end of the seat plate to be transversely arranged at the front end of the seat plate, and the extension piece three drives the backrest to swing around the rear end of the seat plate to be transversely arranged at the rear end of the seat plate, so that the wheelchair can be converted into a bed shape, which is convenient for the user to move between the bed and the wheelchair, and the arrangement of the extension piece one, the extension piece two, the extension piece three and the extension piece four enables the user to freely adjust the posture on the wheelchair, thereby improving the convenience of the user's life.

[0009] In the aforementioned multi-functional wheelchair with toilet access, the lifting assembly includes a control motor fixed to the base, a vertical gear fixed to the output shaft of the control motor, and a rack meshing with the vertical gear. Each base has a guide plate fixed to it, and one side of each guide plate has a strip-shaped protrusion extending vertically. A connecting plate is fixed to the lower side of each baffle. A vertical connecting plate is provided between the connecting plate and the guide plate. The upper end of the connecting plate is fixed to the connecting plate, and one side of its lower end has a guide groove for the strip-shaped protrusion to be inserted. The rack is vertically fixed to the connecting plate, which is located between the vertical gear and the guide plate. The control motor drives the vertical gear to rotate. Under the transmission action of the vertical gear and the rack, the connecting plate and the connecting plate can move the baffle up and down, which is very convenient.

[0010] In the aforementioned multifunctional wheelchair with toilet access, the drive assembly includes a dual-axis stepper motor, a left-hand lead screw fixed to one output shaft of the dual-axis stepper motor, a nut one sleeved on the left-hand lead screw, a right-hand lead screw fixed to the other output shaft of the dual-axis stepper motor, and a nut two sleeved on the right-hand lead screw. Both the left-hand lead screw and the right-hand lead screw extend from the left side of the seat to the right side. The seat also has a strip-shaped groove one and a strip-shaped groove two extending from the left side to the right side. Nut seat one and nut seat two are fixed on the two bases respectively. Nut one is located inside nut seat one and has a protrusion one that can be embedded in the strip-shaped groove one. Nut two is located inside nut seat two and has a protrusion two that can be embedded in the strip-shaped groove two. The dual-axis stepper motor can simultaneously drive the left-hand lead screw and the right-hand lead screw to rotate, thereby causing nut one to move nut seat one within the strip groove one, and nut two to move nut seat two within the strip groove two. Nut seat one and nut seat two can simultaneously drive the two bases and the baffles connected to them to move away from each other, thus forming a space under the seat to accommodate the toilet. This can be achieved simply by operating the dual-axis stepper motor, which is very convenient for the user.

[0011] In the aforementioned multi-functional wheelchair with toilet access, the number of drive components on the seat is two, with the two drive components located at the front and rear ends of the underside of the seat, respectively. The two drive components provide sufficient power for the two bases to separate or move closer together, ensuring the user can use the toilet independently.

[0012] In the aforementioned multi-functional wheelchair with toilet access, each base has two telescopic components (four), arranged side-by-side and spaced apart from the front to the rear of the seat. The housing of each telescopic component (four) is fixed to the base, and the telescopic rod of each component (four) is vertically upward and hinged at its end to the lower side of the corresponding armrest. One of the two telescopic components (four) connected to each armrest retracts while the other extends, allowing the armrest to tilt for support and facilitating the user's ascent.

[0013] In the aforementioned multifunctional wheelchair with toilet access, the lower end of the leg rest is hinged to the inner side of the pedal. Two strip-shaped grooves extending from the front end of the seat towards the rear end are formed on the lower side of the pedal. Each groove contains a strip-shaped slider extending along its length. A movable rod extending from the left side of the seat towards the right is inserted near the front end of the lower side of the two bases. Two connecting rods corresponding to the strip-shaped sliders are fitted onto the movable rods, with the end of the connecting rod furthest from the movable rod hinged to the end of the corresponding strip-shaped slider closest to the seat. The hinged connection between the pedal and the leg rest, along with the cooperation of the strip-shaped grooves, sliders, and connecting rods, ensures that the leg rest remains parallel to the ground at all times during rotation, improving user comfort.

[0014] In the aforementioned multifunctional wheelchair with toilet access, two mounting seats corresponding to the base are fixed to the rear end of the lower side of the seat. Each mounting seat is fixed with a guide rod extending from the left side of the seat to the right side. The housings of the two telescopic components are hinged to the corresponding bases. Each guide rod is fitted with a connecting block, and the output shaft end of the telescopic component is hinged to the corresponding connecting block. A second guide rod extending from the left side of the seat to the right side is fixed to the middle of the inner side of the leg rest. Two connecting blocks corresponding to the second telescopic component are fitted on the second guide rod. The shell and telescopic rod of the second telescopic component are respectively hinged to the corresponding base and the corresponding connecting block 2. Two guide rods 3, corresponding one-to-one with the third telescopic component, are fixed to the outer side of the backrest. Both guide rods 3 extend from the left side of the seat to the right. The shell of the third telescopic component is fixed to the corresponding base, and the telescopic rod extends from the front end of the seat to the rear end. A support rod is provided between the telescopic rod of the third telescopic component and the corresponding guide rod 3. One end of the support rod is sleeved on the corresponding guide rod 3, and the other end is hinged to the end of the telescopic rod of the third telescopic component. When the drive assembly drives the two bases to move closer or further apart, the first telescopic component can move along the length of the first guide rod, the second telescopic component can move along the length of the second guide rod, and the third telescopic component can move along the length of the third guide rod, thus ensuring the smooth operation of the entire process.

[0015] In the aforementioned multi-functional wheelchair with toilet access, both sides of the seat are equipped with covers. These covers are fixed to the base and enclose the corresponding base within the space beneath the seat. Each cover has a side opening for a mounting bracket to be inserted into it. A vertically positioned pin passes through this opening and secures the mounting bracket. An electromagnetic relay controls the raising and lowering of the pin. The upper sides of both covers have grooves for the corresponding armrests to be inserted. The covers are fixed to the base, which is both aesthetically pleasing and safe. The mounting brackets allow for docking with a bed equipped with mounting brackets. When the electromagnetic relay is energized, the pin is retracted; when docked, the relay is de-energized, causing the pin to drop and locking the wheelchair to the bed. This facilitates movement between the user and the bed while ensuring high safety.

[0016] In the aforementioned multi-functional wheelchair with toilet access, the base includes a horizontally arranged base plate with through holes for the rollers to be fitted. The lower ends of the rollers are located below the base plate. The drive motor is fixed to the upper side of the base plate. The housings of telescopic component one and telescopic component two are hinged to the upper side of the base plate. A vertically arranged mounting bracket is fixed to the upper side of the base plate, and two telescopic components four are fixed to the mounting bracket. Vertically arranged uprights one and two are fixed to the upper side of the base plate below the front and rear ends of the seat, respectively. Two U-shaped rods spaced vertically between uprights one and uprights two on each base are fixed, and the housing of telescopic component three is fixed to the U-shaped rods. The structure of the base gives the entire wheelchair good stability and facilitates the installation of other components on the wheelchair.

[0017] In the aforementioned multi-functional wheelchair with toilet access, the first telescopic component is a cylinder, hydraulic cylinder, or electric push rod; the second telescopic component is a cylinder, hydraulic cylinder, or electric push rod; the third telescopic component is a cylinder, hydraulic cylinder, or electric push rod; and the fourth telescopic component is a cylinder, hydraulic cylinder, or electric push rod. Any one of the cylinders, hydraulic cylinders, or electric push rods can provide powerful force, ensuring the normal operation of this wheelchair.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The two lifting components in this invention can lower the corresponding baffles, the drive component can move the two bases and the baffles connected to them away from each other, and the drive motor can move the wheelchair to a position where the toilet is located below the seat and corresponds to the toilet opening. The elderly and disabled people using this wheelchair can use it independently, which improves the convenience of using the toilet.

[0020] 2. The telescopic components 2, 3 and 4 in this invention allow elderly and disabled people to freely adjust their posture when using this wheelchair, thus improving user comfort.

[0021] 3. In this invention, telescopic component one and telescopic component four work together to help the user stand up.

[0022] 4. In this invention, telescopic components two, three, and four work together to adjust the wheelchair into a bed shape. When combined with an electromagnetic relay, this improves the convenience of life for the elderly and disabled. Attached Figure Description

[0023] Figure 1 This is a 3D structural diagram of a multi-functional wheelchair that can also be used for toileting. Figure 1 .

[0024] Figure 2 This is a left view of a multi-functional wheelchair that can also be used for toileting.

[0025] Figure 3 This is a structural diagram of a multi-functional wheelchair that can also be used for toileting.

[0026] Figure 4 This is a rear view of a multi-functional wheelchair that can also be used for toileting.

[0027] Figure 5 This is a 3D structural diagram of a multi-functional wheelchair that can also be used for toileting. Figure 2 .

[0028] Figure 6 This is a 3D structural diagram of a multi-functional wheelchair that can also be used for toileting. Figure 3 .

[0029] Figure 7 This is a schematic diagram of the seat of a multifunctional wheelchair that can also be used for toileting.

[0030] Figure 8 This is a schematic diagram of the drive assembly in a multi-functional wheelchair that can also be used for toileting.

[0031] In the diagram: 1. Seat; 1a. Toilet opening; 1b. Strip groove one; 1c. Strip groove two; 2. Backrest; 3. Backrest pillow; 4. Leg rest; 5. Footrest; 5a. Strip slide; 6. Armrest; 7. Base; 71. Base plate; 71a. Through hole; 72. Mounting bracket; 73. Upright pole one; 74. Upright pole two; 75. U-shaped rod; 8. Roller; 9. Drive motor; 10. Telescopic component one; 11. Telescopic component two; 12. Telescopic component three; 13. Telescopic component four; 14. Baffle; 15. Lifting assembly; 151. Control motor; 152. Vertical gear; 153. Rack; 154. Guide plate; 154a. Strip protrusion; 155. Connecting plate one ; 156. Connecting plate two; 156a. Guide groove; 16. Drive assembly; 161. Dual-axis stepper motor; 162. Left-hand lead screw; 163. Nut one; 164. Right-hand lead screw; 165. Nut two; 166. Nut seat one; 166a. Protrusion one; 167. Nut seat two; 167a. Protrusion two; 17. Strip slider; 18. Movable rod; 19. Connecting rod; 20. Mounting base; 21. Guide rod one; 22. Connecting block one; 23. Guide rod two; 24. Connecting block two; 25. Guide rod three; 26. Support rod; 27. Cover; 27a. Interface; 27b. Groove; 28. Pin; 29. ​​Electromagnetic relay. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] like Figures 1 to 6As shown, the multi-functional wheelchair that can be used for toileting in this embodiment includes a seat 1, a backrest 2, a headrest 3, a leg rest 4, a footrest 5, two armrests 6 respectively located on the left and right sides of the seat 1, and two bases 7 respectively located on the left and right sides below the seat 1. The upper end of the leg rest 4 is hinged to the front end of the seat 1. The footrest 5 is horizontally located at the lower end of the leg rest 4 and its inner side is hinged to the lower end of the leg rest 4. The lower end of the backrest 2 is hinged to the rear end of the seat 1. The headrest 3 is located at the upper end of the backrest 2. Each base 7 is provided with a telescopic component 10 that can drive the rear end of the seat 1 to swing around the front end, a telescopic component 2 11 that can drive the leg rest 4 to swing around the front end of the seat 1, a telescopic component 3 12 that can drive the backrest 2 to swing around the rear end of the seat 1, and a corresponding telescopic component 12 that can drive the backrest 2 to swing around the rear end of the seat 1. The armrest 6 has a telescopic component 13 that moves up and down. Telescopic component 10 is a cylinder, hydraulic cylinder, or electric push rod. Telescopic component 2 is a cylinder, hydraulic cylinder, or electric push rod. Telescopic component 3 is a cylinder, hydraulic cylinder, or electric push rod. Telescopic component 4 is a cylinder, hydraulic cylinder, or electric push rod. Each base 7 is equipped with a roller 8 and a drive motor 9 that drives the roller 8 to rotate. Here, the roller 8 is a Mecanum wheel. Each of the two bases 7 is equipped with a lifting component 15 that corresponds one-to-one with the baffle 14. Each lifting component 15 can drive the corresponding baffle 14 to move up and down. The seat plate 1 is also equipped with a drive component 16 that can make the two bases 7 and the baffle 14 connected to the bases 7 through the lifting component 15 move closer or further away from each other.

[0034] Furthermore, such as Figures 1 to 6 As shown, each side of the seat 1 is provided with a cover 27 fixed to the corresponding base 7. The cover 27 can enclose the base 7 in the space below the seat 1. Each cover 27 has a groove 27b on its upper side for the corresponding armrest 6 to be embedded. The base 7 includes a horizontally arranged base plate 71. The base plate 71 has through holes 71a for the rollers 8 to be embedded. Each base 7 is provided with two rollers 8. The two rollers 8 are arranged side by side and spaced apart from the front end to the rear end of the seat 1. The lower end of the rollers 8 is located below the base plate 71. The drive motor 9 is fixed to the upper side of the base plate 71. A vertically arranged mounting bracket 72 is fixed to the upper side of the base plate 71. The housing of the telescopic component 4 13 is fixed to the upper side of the mounting bracket 72. The telescopic rod of the telescopic component 4 13 is arranged vertically upward and its end is connected to the lower side of the armrest 6. The wheelchair is hinged on the side. Each base 7 has two telescopic components 13, which are arranged side by side from the front end to the rear end of the seat 1. The upper side of the base plate 71 is fixed with vertically arranged uprights 73 and 74, respectively, below the front end and the rear end of the seat 1. There are two U-shaped rods 75 arranged vertically and vertically between the uprights 73 and 74 on each base 7. In order to facilitate the connection between the wheelchair and the bed, two fixing components can be arranged at intervals on one side of the bed. Each cover 27 has a mating interface 27a for the two fixing components to be inserted. The mating interface 27a has a vertical pin 28, which can abut against the fixing component. Each cover 27 is fixed with an electromagnetic relay 29 that can control the lifting and lowering of the pin 28.

[0035] Furthermore, such as Figures 1 to 7 As shown, two mounting bases 20 corresponding to the bases 7 are fixed to the lower rear end of the seat 1. Each mounting base 20 is fixed with a guide rod 21 extending from the left side to the right side of the seat 1. Each guide rod 21 is fitted with a connecting block 22. The shell of the telescopic component 10 is hinged to the upper side of the base plate 71, and the output shaft end of the telescopic component 10 is hinged to the corresponding connecting block 22. A guide rod 23 is fixed to the middle of the inner side of the leg rest 4. The guide rod 23 extends from the left side to the right side of the seat 1. Two connecting blocks 24 are fitted on the guide rod 23. The shell of the telescopic component 11 is hinged to the upper side of the base plate 71, and the telescopic rod end of the telescopic component 11 is hinged to the corresponding connecting block 24. Movable rods 18 are passed through the two uprights 73 on the two bases 7. The movable rods 18 extend from the left side to the right side of the seat 1. The lower side of the pedal 5 Two strip-shaped grooves 5a are provided, extending from the front end to the rear end of the seat plate 1 and spaced apart on both sides of the seat plate 1. Each strip-shaped groove 5a contains a strip-shaped slider 17 extending along its length. Two connecting rods 19 are fitted side by side and spaced apart on the movable rod 18. The ends of the two connecting rods 19 away from the movable rod 18 are hinged to the ends of the corresponding strip-shaped sliders 17 near the seat plate 1. Two guide rods 25 are fixed on the outside of the backrest 2. Both guide rods 25 extend from the left side to the right side of the seat plate 1. The housing of each telescopic component 12 is fixedly connected to a U-shaped rod 75 on the corresponding base 7. A support rod 26 is provided between the telescopic rod of each telescopic component 12 and the corresponding guide rod 25. One end of the support rod 26 is fitted on the corresponding guide rod 25 and the other end is hinged to the end of the telescopic rod of the corresponding telescopic component 12.

[0036] Furthermore, such as Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the lifting assembly 15 includes a control motor 151, a vertical gear 152, a rack 153, a first connecting plate 155, a second connecting plate 156, and a guide plate 154. The control motor 151 is fixed on two U-shaped rods 75 on the base 7. The vertical gear 152 is fixed to the end of the output shaft of the control motor 151. The first connecting plate 155 is arranged horizontally and one end is fixed to the lower side of the corresponding baffle 14. The second connecting plate 156 and the guide plate 154 are both arranged vertically. The upper end of the second connecting plate 156 is fixed to the lower side of the other end of the first connecting plate 155. The rack 153 is fixed vertically on the second connecting plate 156. The second connecting plate 156 has a vertically arranged guide groove 156a. The guide plate 154 has a strip-shaped protrusion 154a that can be embedded in the guide groove 156a.

[0037] Furthermore, such as Figure 3 , Figure 5 ,Figure 6 , Figure 7 and Figure 8 As shown, there are two drive assemblies 16, located at the front and rear ends of the lower side of the seat plate 1, respectively. Each drive assembly 16 includes a dual-axis stepper motor 161, a left-hand lead screw 162 fixed to one output shaft end of the dual-axis stepper motor 161, a nut 163 screwed onto the left-hand lead screw 162, a right-hand lead screw 164 fixed to the other output shaft end of the dual-axis stepper motor 161, and a nut 165 screwed onto the right-hand lead screw 164. Nut seat 166 is fixed to the upper end of each upright 73 and upright 74 on each base 7. Inside nut seat 166, nut seat 166 has a protrusion 166a. Nut 2 165 is located inside nut seat 2 167, nut seat 2 167 has a protrusion 2 167a. Left-hand lead screw 162 and right-hand lead screw 164 both extend from the left side of seat plate 1 to the right side. Seat plate 1 has two strip grooves 1b for the corresponding protrusions 166a of nut seat 166 to be inserted and two strip grooves 1c for the corresponding protrusions 167a of nut seat 2 167 to be inserted. Strip grooves 1b and 1c both extend from the left side of seat plate 1 to the right side.

[0038] The backrest 2 can rotate from 0° to 90° via guide rod 3 25, and the leg rest 4 can also rotate from 0° to 90° via telescopic component 2 11. The pedal 5, in cooperation with the strip slider 17 and connecting rod 19, can remain parallel to the ground when the leg rest 4 rotates. The armrest 6 can be raised and lowered by the push of telescopic component 4 13. The movement of telescopic components 2 11, 3 12, and 4 13 allows the wheelchair to be converted into a bed. The side covers 27 of the wheelchair have interfaces 27a that can be connected to a bed with fixed components, locking the wheelchair to the bed for easy access. When the wheelchair is in front of the toilet, the two stops of the toilet opening 1a... The seat 14 is driven downward by the corresponding lifting assembly 15. When it reaches the bottom, the dual-axis stepper motor 161 drives the left-hand lead screw 162 and the right-hand lead screw 164 to rotate, thereby driving the two bases 7 and the corresponding baffles 14 to move to both sides of the wheelchair, forming a space under the seat 1 that is large enough to accommodate a regular toilet. At this time, the drive motor 9 drives the rollers 8 to rotate, causing the wheelchair to move backward until the toilet opening 1a is directly above the toilet. The telescopic component 10 drives the seat 1 to swing, which helps to lift the wheelchair. At the same time, the first telescopic component 13 under each armrest 6 retracts and the second telescopic component 13 extends, which can also make the armrest 6 tilted for auxiliary support.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A multi-functional wheelchair with toilet access, comprising a seat (1), a backrest (2), a headrest (3), a leg rest (4), and a footrest (5); characterized in that, The leg rest (4) and the backrest (2) are respectively hinged to the front and rear ends of the seat (1). The pedal (5) is horizontally arranged at the lower end of the leg rest (4). The pillow (3) is arranged at the upper end of the backrest (2). Each side of the seat (1) is provided with an armrest (6), and each of the two armrests (6) is provided with a base (7) that can support the seat (1). Each base (7) is provided with a roller (8), a drive motor (9) that can drive the roller (8) to rotate, a telescopic member (10) that can drive the rear end of the seat (1) to swing around the front end, and a telescopic member (10) that can drive the leg rest (4) to swing around the front end. The seat (1) has a telescopic component 2 (11) that swings at the front end, a telescopic component 3 (12) that drives the backrest (2) to swing around the rear end of the seat (1), and a telescopic component 4 (13) that drives the corresponding armrest (6) to move up and down. The middle of the seat (1) has a toilet opening (1a) that is compatible with the toilet. The toilet opening (1a) is provided with two baffles (14) that cooperate with each other to close it. Each of the two bases (7) is provided with a lifting component (15) that is connected to the corresponding baffle (14) and can drive the baffle (14) to move up and down. The lower side of the seat (1) is also provided with a driving component (16). The drive assembly (16) includes a dual-axis stepper motor (161), a left-hand lead screw (162) fixed on one output shaft of the dual-axis stepper motor (161), a nut (163) sleeved on the left-hand lead screw (162), a right-hand lead screw (164) fixed on the other output shaft of the dual-axis stepper motor (161), and a nut (165) sleeved on the right-hand lead screw (164). The left-hand lead screw (162) and the right-hand lead screw (164) both extend from the left side of the seat plate (1) to the right side. The seat plate (1) also has openings... The two bases (7) have a first strip groove (1b) and a second strip groove (1c) extending from the left to the right. A first nut seat (166) and a second nut seat (167) are fixed on the two bases (7). The first nut (163) is located in the first nut seat (166) and the first nut seat (166) has a protrusion (166a) that can be embedded in the first strip groove (1b). The second nut (165) is located in the second nut seat (167) and the second nut seat (167) has a protrusion (167a) that can be embedded in the second strip groove (1c).

2. The multi-functional wheelchair with toilet access according to claim 1, characterized in that, The lifting assembly (15) includes a control motor (151) fixed on the base (7), a vertical gear (152) fixed on the output shaft of the control motor (151), and a rack (153) meshing with the vertical gear (152). Each base (7) is fixed with a guide plate (154), and one side of the guide plate (154) has a strip-shaped protrusion (154a) extending in the vertical direction. Each baffle (14) has a connecting plate (154a) fixed on its lower side. 55), a vertical connecting plate two (156) is provided between the connecting plate one (155) and the guide plate (154). The upper end of the connecting plate two (156) is fixedly connected to the connecting plate one (155), and a guide groove (156a) is opened on one side of the lower end for the strip-shaped protrusion (154a) to be embedded. The rack (153) is vertically fixed on the connecting plate two (156). The connecting plate two (156) is located between the vertical gear (152) and the guide plate (154).

3. The multi-functional wheelchair with toilet access according to claim 2, characterized in that, The number of drive components (16) provided on the seat (1) is two, and the two drive components (16) are respectively located at the front end and the rear end of the seat (1) on the lower side.

4. The multi-functional wheelchair with toilet access according to claim 1, characterized in that, The number of telescopic components four (13) on each of the bases (7) is two, and the two telescopic components four (13) are arranged side by side and spaced apart from the front end to the rear end of the seat plate (1). The shell of the telescopic component four (13) is fixed on the base (7), and the telescopic rod of the telescopic component four (13) is arranged vertically upward and its end is hinged to the lower side of the corresponding armrest (6).

5. The multifunctional wheelchair with toilet access according to claim 1, characterized in that, The lower end of the leg rest (4) is hinged to the inner side of the pedal (5). The lower side of the pedal (5) has two strip-shaped grooves (5a) extending from the front end of the seat (1) to the rear end. The strip-shaped grooves (5a) are provided with strip-shaped sliders (17) extending along their length. The two bases (7) are provided with a movable rod (18) extending from the left side of the seat (1) to the right side near the lower front end of the seat (1). The movable rod (18) is fitted with two connecting rods (19) that correspond one-to-one with the strip-shaped sliders (17). The end of the connecting rod (19) away from the movable rod (18) is hinged to the end of the corresponding strip-shaped slider (17) near the seat (1).

6. The multi-functional wheelchair with toilet access according to claim 1 or 5, characterized in that, Two mounting seats (20) corresponding to the base (7) are fixed at the lower rear end of the seat (1). Each mounting seat (20) is fixed with a guide rod (21) extending from the left side of the seat (1) to the right side. The housings of the two telescopic components (10) are hinged to the corresponding base (7). Each guide rod (21) is fitted with a connecting block (22), and the output shaft end of the telescopic component (10) is hinged to the corresponding connecting block (22). A guide rod (23) extending from the left side of the seat (1) to the right side is fixed at the middle of the inner side of the leg rest (4). Two connecting blocks (24) corresponding to the telescopic component (11) are fitted on the guide rod (23). The shell and telescopic rod of (11) are respectively hinged to the corresponding base (7) and the corresponding connecting block two (24); two guide rods three (25) are fixed on the outer side of the backrest (2) and are respectively corresponding to the telescopic component three (12). The two guide rods three (25) extend from the left side of the seat plate (1) to the right side. The shell of the telescopic component three (12) is fixed on the corresponding base (7) and the telescopic rod extends from the front end of the seat plate (1) to the rear end. A support rod (26) is provided between the telescopic rod of the telescopic component three (12) and the corresponding guide rod three (25). One end of the support rod (26) is sleeved on the corresponding guide rod three (25) and the other end is hinged to the end of the telescopic rod of the corresponding telescopic component three (12).

7. The multi-functional wheelchair with toilet access according to claim 1, characterized in that, The seat (1) has a cover (27) on both sides. The cover (27) is fixed on the base (7) and can enclose the corresponding base (7) in the space below the seat (1). Each cover (27) has a mating interface (27a) on its side for the fasteners on the bed to be inserted. A vertically arranged pin (28) that can hold the fasteners together is inserted in the mating interface (27a). The cover (27) is provided with an electromagnetic relay (29) that can control the lifting and lowering of the pin (28). The upper side of each cover (27) has a groove (27b) for the corresponding armrest (6) to be inserted.

8. The multi-functional wheelchair with toilet access according to claim 1 or 7, characterized in that, The base (7) includes a horizontally arranged base plate (71), on which a through hole (71a) is opened for the roller (8) to be embedded. The lower end of the roller (8) is located below the base plate (71). The drive motor (9) is fixed on the upper side of the base plate (71). The housings of the first telescopic component (10) and the second telescopic component (11) are both hinged to the upper side of the base plate (71). A vertically arranged mounting bracket is fixed on the upper side of the base plate (71). (72) Two of the telescopic components four (13) are fixed on the mounting frame (72). Vertically arranged uprights one (73) and two uprights two (74) are fixed on the upper side of the base plate (71) below the front end and the rear end of the seat plate (1), respectively. Two U-shaped rods (75) are fixed between the uprights one (73) and the uprights two (74) on each base (7). The shell of the telescopic component three (12) is fixed on the U-shaped rods (75).

9. The multi-functional wheelchair with toilet access according to claim 1, characterized in that, The first telescopic component (10) is a cylinder, a hydraulic cylinder, or an electric push rod; the second telescopic component (11) is a cylinder, a hydraulic cylinder, or an electric push rod; the third telescopic component (12) is a cylinder, a hydraulic cylinder, or an electric push rod; and the fourth telescopic component (13) is a cylinder, a hydraulic cylinder, or an electric push rod.

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