Multifunctional shifting device

Abstract

The invention belongs to the technical field of nursing instruments and discloses a multifunctional shifting device which comprises a bottom frame, universal wheels are mounted at the bottom of the bottom frame, a driving mechanism is mounted at the front end of the bottom frame, a lifting mechanism is mounted on the bottom frame, an armrest frame is mounted on the lifting mechanism, and a seat frame is mounted at the rear end of the armrest frame. A filling mechanism and a defecation mechanism are mounted at the bottom of the seat frame. According to the invention, a patient or an old person having difficulty in moving legs and feet can use the bed alone at home, and the purposes of displacement and defecation can be achieved without the assistance of nursing personnel.

Description

Technical Field

[0001] The invention belongs to the technical field of nursing equipment, and in particular relates to a multifunctional shifting device. Background Art

[0002] The transfer machine can be used to transfer patients or elderly people with limited leg and foot movement, thereby reducing the burden on caregivers. The transfer situations include: transferring between bed and wheelchair, transferring between wheelchair and toilet, transferring between wheelchair and bathing equipment, etc.

[0003] When using the existing transfer machine, although the caregiver does not need to lift the patient or the elderly, which reduces the labor intensity of the caregiver's transfer, the patient or the elderly cannot use it alone and still needs the assistance of the caregiver, which causes inconvenience in use. Summary of the invention

[0004] The purpose of the present invention is to provide a multifunctional shifting device, which can be used by patients or elderly people with limited mobility at home alone, and can achieve the purpose of shifting and using the toilet without the assistance of nursing staff.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A multifunctional shifting device comprises a base frame, a universal wheel is installed at the bottom of the base frame, a driving mechanism is installed at the front end of the base frame, a lifting mechanism is installed on the base frame, an armrest frame is installed on the lifting mechanism, a seat frame is installed at the rear end of the armrest frame, and a filling mechanism and a toilet mechanism are installed at the bottom of the seat frame.

[0007] It is further defined that the base frame is a U-shaped structure, and screws are symmetrically installed on the left and right ends of the base frame. The lifting mechanism includes two symmetrical lifting shells, each of which is equipped with a rolling bearing. The outer ring of the rolling bearing is fixedly connected to the lifting shell, and the inner ring of the rolling bearing is fixedly connected to the first bevel gear. The interior of the first bevel gear is provided with an internal thread, and the first bevel gear is connected to the screw through the internal thread. The lifting shell is also rotatably connected to a first rotating shaft, and the two ends of the first rotating shaft pass through the left and right lifting shells. The two ends of the first rotating shaft are connected to a turntable and a first gear, and the turntable is rotatably connected to a rotating handle. Each lifting shell is also rotatably connected to a second rotating shaft, and the second rotating shaft is connected to a second gear and a second bevel gear, the first gear is meshed with the second gear, and the second bevel gear is meshed with the first bevel gear.

[0008] It is further defined that the armrest frame includes two armrest frame shells symmetrically installed on both sides, each armrest frame shell has a handle rotatably connected to the upper end thereof, a first fixed pulley, a second fixed pulley, a third fixed pulley, and a fourth fixed pulley are sequentially installed in the armrest frame shell, a third rotating shaft is rotatably connected to the lower end of the armrest frame shell, the third rotating shaft is connected to the armrest frame shell through a torsion spring, the seat frame is connected to the third rotating shaft, a ratchet mechanism is connected to the middle part of the third rotating shaft, a pull rope is connected to the upper end of the handle, the pull rope is sequentially passed around the first fixed pulley, the second fixed pulley, the third fixed pulley, and the fourth fixed pulley, and the other end of the pull rope is connected to the ratchet mechanism.

[0009] It is further defined that the ratchet mechanism includes a ratchet, a pawl, a first spring, and a first mounting plate. The first mounting plate is fixedly mounted inside the handrail frame shell. The first spring is connected between the pawl and the first mounting plate. The rear end of the pawl is rotatably connected to the first mounting plate. The front end of the pawl is provided with a connecting hole, and the other end of the pull rope is connected to the connecting hole.

[0010] It is further defined that the seat frame includes a left seat frame and a right seat frame which are symmetrically arranged on the left and right sides, the left seat frame and the right seat frame are respectively connected to two third rotating shafts on the left and right sides, cushions and backrests are installed on the left and right seat frames, and the filling mechanism and the toilet mechanism are respectively installed on the bottom of the right seat frame and the left seat frame.

[0011] It is further defined that the filling mechanism includes two second mounting plates symmetrically arranged on the left and right, the two second mounting plates are fixedly mounted on the bottom of the right seat frame, a first slide groove is opened on the two second mounting plates, the shapes of the first slide groove are vertical, inclined, horizontal and inclined from front to back, a first connecting rod, a second connecting rod and a third connecting rod are slidably connected in the first slide groove, a first connecting plate is connected between the first connecting rod and the second connecting rod, a second connecting plate is connected between the second connecting rod and the third connecting rod, a spring mounting plate is connected to the outer sides of the two second mounting plates, a second spring is connected between the spring mounting plate and the end of the second connecting rod, a filling pad is fixedly connected to the first connecting rod, a first pull rod is connected to the third connecting rod, and a pull handle is connected to the right end of the first pull rod.

[0012] It is further defined that the toilet mechanism includes two slide rails, the two slide rails are fixedly connected to the bottom of the left seat frame, a rack is provided on the inner side of one of the slide rails, a disc is connected between the two slide rails, the outer side of the disc is rotatably connected with a gear ring, the inner side of the gear ring is a toothed portion, the outer side of the gear ring is composed of a toothed portion and a smooth portion, the toothed portion on the outer side of the gear ring is meshed with the rack, a square hole and four second slide grooves are opened in the middle of the disc, a sealing plate is slidably connected in the four second slide grooves, a toothed portion is provided at the bottom of the sealing plate, four third gears are rotatably connected to the disc, the third gears are simultaneously meshed with the toothed portions at the bottom of the gear ring and the sealing plate, a second pull rod and a third slide groove are connected to the bottom of the disc, a toilet bowl is slidably connected in the third slide groove, and a curved edge is connected to the top of the toilet bowl.

[0013] It is further defined that the driving mechanism also includes a steering shaft, the upper end of the telescopic shaft is rotatably connected to a large sprocket and a rotating rod, the middle part of the steering shaft is rotatably connected to the front end of the base frame, the lower end of the steering shaft is connected to a wheel frame, the lower end of the wheel frame is rotatably connected to a small sprocket and a wheel, and the small sprocket is connected to the large sprocket by a chain.

[0014] It is further defined that a foot pedal is connected to the front end of the base frame.

[0015] It is further defined that armrest pads are installed on the two armrest frame shells and the left seat frame and the right seat frame.

[0016] The working principle of the present invention is:

[0017] First, the patient or the elderly sits up from the bed, moves the device to the bedside, and then uses both hands to pry the left and right seat frames apart to the left and right. At this time, the left and right seat frames respectively drive the corresponding third rotating shaft and ratchet to rotate. When the left and right seat frames are opened to a suitable angle, the left and right seat frames are released. Since the ratchet is stuck by the pawl, the left and right seat frames will not reverse under the action of the torsion spring.

[0018] Then pull the device closer again, and use both hands to turn the handle to drive the turntable and the first rotating shaft to rotate. The first rotating shaft then drives the first gear, the second gear, the second bevel gear, and the first bevel gear to rotate in sequence. The first bevel gear moves up and down along the screw, and then drives the lifting shell and the seat frame to move up and down through the rolling bearing. The seat frame stops when it moves to be slightly higher than the bed surface.

[0019] Then pull the device closer again to extend the bottom frame into the bottom of the bed, then hold the front end of the armrest frame with both hands, place the forearms on the armrest pads at the front end of the two armrest frame shells, step on the foot pedals, and then use one forearm to support the body to tilt to the other side, so that the thigh and buttocks are slightly off the bed surface, then pinch the handle with your fingers, and the rotation of the handle drives the pawl to rotate through the pull rope, so that the pawl is disengaged from the ratchet. Under the action of the torsion spring, the third shaft drives the corresponding seat frame to reverse, so that the cushion extends under the thigh and buttocks, and then release the handle. Under the action of the first spring, the pawl resets and clamps the ratchet, and the handle resets; in the same way, the cushion on the other side is extended under the thigh and buttocks on the other side. At this time, you can turn the handle again to move the seat frame up to a suitable height to facilitate the seat frame to leave.

[0020] Then, the large sprocket is driven to rotate by the rotating rod, and the large sprocket drives the small sprocket and the wheel to rotate through the chain. When the rotating rod is rotated forward, forward movement can be achieved; when the rotating rod is rotated backward, backward movement can be achieved, and turning can be achieved by rotating the rotating shaft, thereby realizing the free movement of patients or the elderly.

[0021] When you need to use the toilet, hold the handle with your right hand and pull it to the right. The handle drives the first connecting rod, the second connecting rod and the third connecting rod to move to the right in the first slide groove through the first pulling rod. The filling pad is pulled out from the through hole in the middle of the two cushions and moves to the right until the third connecting rod is pulled to the rightmost end. Then, push the first pulling rod downward to make the third connecting rod stuck in the groove at the right end of the first slide groove, and release the handle. At this time, the filling pad is hidden at the bottom of the right seat frame, and the second spring is in a stretched state.

[0022] Then hold the second pull rod with your left hand and push it to the right. The second pull rod drives the disc to move to the right. The gear ring slides in the slide rail and the toothed portion on the outside of the gear ring engages with the rack to make the gear ring rotate. The gear ring then drives the four sealing plates to move respectively through the third gear. When the disc moves to the far right, the four sealing plates are all opened, revealing the square hole in the middle. At this time, the square hole is also in the middle of the through holes in the middle of the two cushions. At this time, the patient or the elderly can urinate and defecate.

[0023] When the urination and defecation are finished, hold the second pull rod with your left hand and pull it to the left. The second pull rod drives the disc to move to the left, and the four sealing plates move in the opposite direction. When the disc moves to the leftmost position, the four sealing plates close and seal the square hole in the middle to prevent the odor from emitting. Then push the first pull rod upward to remove the third connecting rod from the groove at the right end of the first slide slot, release the pull handle, and under the elastic force of the second spring, the second connecting rod drives the first connecting rod and the third connecting rod to move to the left in the first slide slot, and the filling pad moves to the left, moves diagonally, and moves upward in turn, and finally the filling pad is inserted into the through hole in the middle of the two cushions, thereby improving the comfort when sitting.

[0024] The advantages of the present invention mainly include:

[0025] 1. The setting of the driving mechanism can realize the free movement of patients or the elderly;

[0026] 2. The setting of the lifting mechanism can adapt to beds of different heights and improve the practicality of the device;

[0027] 3. The setting of the filling mechanism can fill the middle hole of the seat cushion and improve the comfort when sitting;

[0028] 4. The setting of the toilet mechanism can make it convenient for patients or the elderly to use the toilet at any time, and can prevent the spread of odor, thereby increasing the comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0030] Figure 1 The structure of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 2 The structure of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 3 It is a schematic diagram of the main structure of an embodiment of the present invention;

[0033] Figure 4 It is a left-side structural schematic diagram of an embodiment of the present invention;

[0034] Figure 5 It is a rear view structural schematic diagram of an embodiment of the present invention;

[0035] Figure 6 It is a structural schematic diagram of a seat frame when it is opened according to an embodiment of the present invention;

[0036] Figure 7 Schematic diagram of the partial structure of the lifting mechanism in the embodiment of the present invention Figure 1 ;

[0037] Figure 8 Schematic diagram of the partial structure of the lifting mechanism in the embodiment of the present invention Figure 2 ;

[0038] Fig. 9 It is a schematic diagram of a partial cross-sectional structure of the interior of the handrail frame in an embodiment of the present invention;

[0039] Fig.10 It is a structural schematic diagram of a ratchet mechanism in an embodiment of the present invention;

[0040] Fig.11 The structure of the filling mechanism in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0041] Fig.12 The structure of the filling mechanism in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0042] Fig.13 It is a schematic diagram of the structure of the toilet mechanism in an embodiment of the present invention when the sealing plate is opened;

[0043] Fig.14 It is a schematic diagram of the structure of the toilet mechanism when the sealing plate is closed in an embodiment of the present invention;

[0044] Fig.15 Schematic diagram of part of the structure of the toilet mechanism in the embodiment of the present invention Figure 1 ;

[0045] Fig.16 Schematic diagram of part of the structure of the toilet mechanism in the embodiment of the present invention Figure 2 ;

[0046] Fig.17 This is a schematic diagram of the structure of a toilet bowl in an embodiment of the present invention;

[0047] The main component symbols are described as follows:

[0048] Base frame 1, screw rod 11, pedal 12, universal wheel 2, telescopic shaft 31, steering shaft 32, universal joint 33, large sprocket 34, rotating rod 35, wheel frame 36, small sprocket 37, wheel 38, lifting mechanism 4, lifting shell 41, rolling bearing 42, first bevel gear 43, first rotating shaft 44, turntable 45, rotating handle 46, second rotating shaft 47, second gear 48, second bevel gear 49, first gear 410, handrail frame 5, handrail frame shell 51, handle 52, first fixed pulley 53, second fixed pulley 54, third fixed pulley 55, fourth fixed pulley 56, third rotating shaft 57, ratchet mechanism 58, ratchet 581, pawl 582, first spring 583, The first mounting plate 584, the connecting hole 585, the pull rope 59, the seat frame 6, the left seat frame 61, the right seat frame 62, the cushion 63, the backrest 64, the filling mechanism 7, the second mounting plate 71, the first slide groove 72, the first connecting rod 73, the second connecting rod 74, the third connecting rod 75, the first connecting plate 76, the second connecting plate 77, the spring mounting plate 78, the second spring 79, the filling pad 710, the first pull rod 711, the pull handle 712, the toilet mechanism 8, the slide rail 81, the rack 82, the disc 83, the gear ring 84, the square hole 85, the second slide groove 86, the sealing plate 87, the third gear 88, the second pull rod 89, the third slide groove 810, the toilet bowl 811, the bent edge 812, and the armrest pad 9. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0050] Although the existing transfer machine does not require the caregiver to lift the patient or the elderly when in use, which reduces the labor intensity of the caregiver, the patient or the elderly cannot use it alone and still needs the assistance of the caregiver. Therefore, for patients or the elderly who are not financially well-off and cannot hire a caregiver or whose relatives or children cannot take care of them full-time, the existing transfer machine also has many inconveniences when in use.

[0051] like Figures 1 to 17 As shown, a multifunctional displacement device of the present invention enables patients or elderly people with limited mobility to use it at home alone, and can achieve the purpose of displacement and toileting without the assistance of others. The device includes a base frame 1, a universal wheel 2 is installed at the bottom of the base frame 1, the base frame 1 is a U-shaped structure, screws 11 are symmetrically installed at the left and right ends of the base frame 1, and a foot pedal 12 is connected to the front end of the base frame 1. A lifting mechanism 4 is installed on the base frame 1, an armrest frame 5 is installed on the lifting mechanism 4, and a seat frame 6 is installed at the rear end of the armrest frame 5.

[0052] In order to adjust the height of the seat frame 6, the lifting mechanism 4 includes two lifting shells 41 that are symmetrical on the left and right. A rolling bearing 42 is installed in each lifting shell 41. The outer ring of the rolling bearing 42 is fixedly connected to the lifting shell 41. The inner ring of the rolling bearing 42 is fixedly connected to the first bevel gear 43. The interior of the first bevel gear 43 is provided with an internal thread. The first bevel gear 43 is connected to the screw 11 through the internal thread. The lifting shell 41 is also rotatably connected to a first rotating shaft 44. Both ends of the first rotating shaft 44 pass through the left and right lifting shells 41. Both ends of the first rotating shaft 44 are connected to a turntable 45 and a first gear 410. The turntable 45 is rotatably connected to a rotating handle 46. Each lifting shell 41 is also rotatably connected to a second rotating shaft 47. The second rotating shaft 47 is connected to a second gear 48 and a second bevel gear 49. The first gear 410 is meshed with the second gear 48, and the second bevel gear 49 is meshed with the first bevel gear 43.

[0053] When adjusting the height of the seat frame 6, both hands drive the turntable 45 and the first rotating shaft 44 to rotate by rotating the handle 46, and the first rotating shaft 44 then drives the first gear 410, the second gear 48, the second bevel gear 49, and the first bevel gear 43 to rotate in sequence. The first bevel gear 43 moves up and down along the screw 11, and then drives the lifting shell 41 and the seat frame 6 to move up and down through the rolling bearing 42, and stops when the seat frame 6 moves to slightly higher than the bed surface.

[0054] The armrest frame 5 further includes two armrest frame shells 51 symmetrically installed on both sides, and armrest pads 9 are installed on the two armrest frame shells 51. A handle 52 is rotatably connected to the upper end of each armrest frame shell 51. A first fixed pulley 53, a second fixed pulley 54, a third fixed pulley 55, and a fourth fixed pulley 56 are sequentially installed in the armrest frame shell 51. A third rotating shaft 57 is rotatably connected to the lower end of the armrest frame shell 51. The third rotating shaft 57 is connected to the armrest frame shell 51 through a torsion spring. The seat frame 6 is connected to the third rotating shaft 57. A ratchet mechanism 58 is connected to the middle of the third rotating shaft 57. The ratchet mechanism 58 It also includes a ratchet 581, a pawl 582, a first spring 583, and a first mounting plate 584. The first mounting plate 584 is fixedly mounted inside the handrail frame housing 51. The first spring 583 is connected between the pawl 582 and the first mounting plate 584. The rear end of the pawl 582 is rotatably connected to the first mounting plate 584. The front end of the pawl 582 is provided with a connecting hole 585. The upper end of the handle 52 is connected to a pull rope 59. The pull rope 59 passes around the first fixed pulley 53, the second fixed pulley 54, the third fixed pulley 55, and the fourth fixed pulley 56 in sequence. The other end of the pull rope 59 is connected to the connecting hole 585.

[0055] The seat frame 6 includes a left seat frame 61 and a right seat frame 62 which are symmetrically arranged on the left and right. Armrest pads 9 are installed on the left and right seat frames 61 and 62. The left and right seat frames 61 and 62 are respectively connected to the left and right third rotating shafts 57. Cushions 63 and backrests 64 are installed on the left and right seat frames 61 and 62. When the two cushions 63 are close together, a through hole is left in the middle for use in the toilet.

[0056] When in use, use both hands to pry the left seat frame 61 and the right seat frame 62 apart to the left and right sides. At this time, the left seat frame 61 and the right seat frame 62 respectively drive the corresponding third rotating shaft 57 and the ratchet 581 to rotate. When the left seat frame 61 and the right seat frame 62 are opened to a suitable angle, the left seat frame 61 and the right seat frame 62 are released. Since the ratchet 582 clamps the ratchet 581, the left seat frame 61 and the right seat frame 62 will not reverse under the action of the torsion spring. Then, hold the front end of the armrest frame 5 with both hands, place the forearms on the armrest pads 9 at the front ends of the two armrest frame shells 51, and step on the footrest 12 with both feet. Then, use one forearm to support the body to tilt to the other side, so that the thigh and buttocks are slightly off the bed surface. Then, pinch the handle 52 with your fingers. The rotation of the handle 52 drives the pawl 582 to rotate through the pull rope 59, so that the pawl 582 is disengaged from the ratchet 581. Under the action of the torsion spring, the third rotating shaft 57 drives the corresponding seat frame to reverse, so that the cushion 63 extends under the thigh and buttocks. Then release the handle 52. Under the action of the first spring 583, the pawl 582 resets and clamps the ratchet 581, and the handle 52 resets. In the same way, the cushion 63 on the other side is extended under the thigh and buttocks on the other side. At this time, you can turn the handle 46 again to move the seat frame 6 up to a suitable height to facilitate the seat frame 6 to leave.

[0057] In order to improve the sitting comfort, a filling mechanism 7 is installed at the bottom of the right seat frame 62, and the filling mechanism 7 includes two second mounting plates 71 arranged symmetrically on the left and right. The two second mounting plates 71 are fixedly mounted on the bottom of the right seat frame 62, and a first slide groove 72 is opened on the two second mounting plates 71. The shapes of the first slide groove 72 are vertical, inclined, horizontal, and inclined from front to back. The first connecting rod 73, the second connecting rod 74, and the third connecting rod 75 are slidably connected in the first slide groove 72, a first connecting plate 76 is connected between the first connecting rod 73 and the second connecting rod 74, and a second connecting plate 77 is connected between the second connecting rod 74 and the third connecting rod 75. A spring mounting plate 78 is connected to the outer side of the two second mounting plates 71, and a second spring 79 is connected between the spring mounting plate 78 and the end of the second connecting rod 74. A filling pad 710 is fixedly connected to the first connecting rod 73, a first pull rod 711 is connected to the third connecting rod 75, and a pull handle 712 is connected to the right end of the first pull rod 711.

[0058] When in use, push the first pull rod 711 upward to remove the third connecting rod 75 from the groove at the right end of the first slide groove 72, release the pull handle 712, and under the elastic force of the second spring 79, the second connecting rod 74 drives the first connecting rod 73 and the third connecting rod 75 to move left in the first slide groove 72, and the filling pad 710 moves leftward, diagonally, and upward in turn, and finally the filling pad 710 is inserted into the through hole in the middle of the two seat cushions 63, thereby improving the sitting comfort.

[0059] In order to facilitate toileting, a toilet mechanism 8 is installed at the bottom of the left seat frame 61, and the toilet mechanism 8 includes two slide rails 81, and the two slide rails 81 are fixedly connected to the bottom of the left seat frame 61. A rack 82 is provided on the inner side of one of the slide rails 81, and a disk 83 is connected between the two slide rails 81. A cover (not shown in the figure) is provided on the disk 83. A gear ring 84 is rotatably connected to the outer side of the disk 83. The inner side of the gear ring 84 is all toothed, and the outer side of the gear ring 84 is composed of a part of the toothed part and a part of the smooth part. The toothed part on the outer side of the gear ring 84 meshes with the rack 82, and the disk 83 is connected to the inner side of the gear ring 84. A square hole 85 and four second slide grooves 86 are opened in the four second slide grooves 86, and a sealing plate 87 is slidably connected in the four second slide grooves 86. A toothed portion is provided at the bottom of the sealing plate 87. Four third gears 88 are rotatably connected to the disc 83. The third gears 88 are engaged with the toothed portions of the gear ring 84 and the bottom of the sealing plate 87 at the same time. A second pull rod 89 and a third slide groove 810 are connected to the bottom of the disc 83. A toilet bowl 811 is slidably connected in the third slide groove 810. A bent edge 812 is connected to the top of the toilet bowl 811. The bent edge 812 facilitates the installation of the toilet bowl 811 in the third slide groove 810.

[0060] When going to the toilet, hold the handle 712 with your right hand and pull it to the right. The handle 712 drives the first connecting rod 73, the second connecting rod 74, and the third connecting rod 75 to move to the right in the first slide groove 72 through the first pull rod 711. The filling pad 710 is pulled out from the through hole in the middle of the two seat cushions 63 and moves to the right until the third connecting rod 75 is pulled to the rightmost end. Then, the first pull rod 711 is pushed downward to make the third connecting rod 75 stuck in the groove at the right end of the first slide groove 72, and the handle 712 is released. At this time, the filling pad 710 is hidden at the bottom of the right seat frame 62, the second spring 79 is in a stretched state, and the through holes in the middle of the two seat cushions 63 are in an open state. Then, the left hand holds the second pull rod 89 and pushes it to the right, and the second pull rod 89 drives the disc 83 to move to the right, the toothed ring 84 slides in the slide rail 81, and the toothed portion on the outer side of the toothed ring 84 meshes with the rack 82, so that the toothed ring 84 rotates, and the toothed ring 84 drives the four sealing plates 87 to move through the third gear 88. When the disc 83 moves to the far right, the four sealing plates 87 are all opened, exposing the square hole 85 in the middle. At this time, the square hole 85 is also in the middle of the through holes in the middle of the two cushions 63, and the patient or the elderly can urinate and defecate. When the urination and defecation are finished, the left hand holds the second pull rod 89 and pulls it to the left, and the second pull rod 89 drives the disc 83 to move to the left, and the four sealing plates 87 move in the opposite direction. When the disc 83 moves to the far left, the four sealing plates 87 are closed, sealing the square hole 85 in the middle to prevent the odor from emitting. When the toilet bowl 811 needs to be cleaned, the toilet bowl 811 can be pulled out from the third sliding groove 810 by grasping the curved edge 812 for cleaning.

[0061] In order to facilitate movement, a driving mechanism is installed at the front end of the base frame 1, and the driving mechanism includes a steering shaft 31. The upper end of the telescopic shaft 31 is rotatably connected to a large sprocket 34 and a rotating rod 35. The middle part of the steering shaft 31 is rotatably connected to the front end of the base frame 1. The lower end of the steering shaft 31 is connected to a wheel frame 32. The lower end of the wheel frame 32 is rotatably connected to a small sprocket 33 and a wheel 36. The small sprocket 33 is connected to the large sprocket 34 by a chain (not shown in the figure). A brake mechanism is also installed in the driving mechanism. The brake mechanism is a conventional technical means in this technical field, so it is not recorded in detail in this technical solution.

[0062] When movement is required, the large sprocket 34 is driven to rotate by the rotating rod 35, and the large sprocket 34 drives the small sprocket 33 and the wheel 36 to rotate through the chain. When the rotating rod 35 is rotated forward, forward movement can be achieved; when the rotating rod 35 is rotated backward, backward movement can be achieved, and the rotating shaft 31 can be rotated to achieve steering, thereby realizing the free movement of patients or elderly people.

[0063] The above is a detailed introduction to a multifunctional shifting device provided by the present invention. The description of the specific embodiment is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A multifunctional shifting device, characterized in that: The invention comprises a base frame (1), a universal wheel (2) is installed at the bottom of the base frame (1), a driving mechanism is installed at the front end of the base frame (1), a lifting mechanism (4) is installed on the base frame (1), an armrest frame (5) is installed on the lifting mechanism (4), a seat frame (6) is installed at the rear end of the armrest frame (5), and a filling mechanism (7) and a toilet mechanism (8) are installed at the bottom of the seat frame (6).

2. A multifunctional shifting device according to claim 1, characterized in that: The base frame (1) is a U-shaped structure. The left and right ends of the base frame (1) are symmetrically installed with screw rods (11). The lifting mechanism (4) further comprises two lifting shells (41) symmetrically arranged on the left and right sides. A rolling bearing (42) is installed in each lifting shell (41). The outer ring of the rolling bearing (42) is fixedly connected to the lifting shell (41). The inner ring of the rolling bearing (42) is fixedly connected to a first bevel gear (43). The first bevel gear (43) is provided with an internal thread inside. The first bevel gear (43) is connected to the screw rod (11) through the internal thread. The lifting shell (41) also has a A first rotating shaft (44) is rotatably connected, and both ends of the first rotating shaft (44) pass through the left and right lifting shells (41). Both ends of the first rotating shaft (44) are connected to a rotating disk (45) and a first gear (410). The rotating disk (45) is rotatably connected to a rotating handle (46). Each lifting shell (41) is also rotatably connected to a second rotating shaft (47). The second rotating shaft (47) is connected to a second gear (48) and a second bevel gear (49). The first gear (410) is meshed with the second gear (48), and the second bevel gear (49) is meshed with the first bevel gear (43).

3. A multifunctional shifting device according to claim 2, characterized in that: The handrail frame (5) further comprises two handrail frame shells (51) symmetrically installed on both sides, the upper end of each handrail frame shell (51) is rotatably connected to a handle (52), a first fixed pulley (53), a second fixed pulley (54), a third fixed pulley (55), and a fourth fixed pulley (56) are sequentially installed in the handrail frame shell (51), and the lower end of the handrail frame shell (51) is rotatably connected to a third rotating shaft (57), and the third rotating shaft (57) is rotated by a torque The spring is connected to the armrest frame shell (51), the seat frame (6) is connected to the third rotating shaft (57), the middle part of the third rotating shaft (57) is connected to a ratchet mechanism (58), the upper end of the handle (52) is connected to a pull rope (59), the pull rope (59) is passed around the first fixed pulley (53), the second fixed pulley (54), the third fixed pulley (55), and the fourth fixed pulley (56) in sequence, and the other end of the pull rope (59) is connected to the ratchet mechanism (58).

4. A multifunctional shifting device according to claim 3, characterized in that: The ratchet mechanism (58) further comprises a ratchet (581), a pawl (582), a first spring (583), and a first mounting plate (584); the first mounting plate (584) is fixedly mounted inside the handrail frame housing (51); the first spring (583) is connected between the pawl (582) and the first mounting plate (584); the rear end of the pawl (582) is rotatably connected to the first mounting plate (584); the front end of the pawl (582) is provided with a connecting hole (585); the other end of the pull rope (59) is connected to the connecting hole (585).

5. A multifunctional shifting device according to claim 4, characterized in that: The seat frame (6) further comprises a left seat frame (61) and a right seat frame (62) which are symmetrically arranged on the left and right sides. The left seat frame (61) and the right seat frame (62) are respectively connected to two third rotating shafts (57) on the left and right sides. A seat cushion (63) and a backrest (64) are installed on the left seat frame (61) and the right seat frame (62). The filling mechanism (7) and the toilet mechanism (8) are respectively installed on the bottom of the right seat frame (62) and the bottom of the left seat frame (61).

6. A multifunctional shifting device according to claim 5, characterized in that: The filling mechanism (7) further comprises two second mounting plates (71) symmetrically arranged on the left and right sides, the two second mounting plates (71) being fixedly mounted on the bottom of the right seat frame (62), the two second mounting plates (71) being provided with a first slide groove (72), a first connecting rod (73), a second connecting rod (74) and a third connecting rod (75) being slidably connected in the first slide groove (72), a first connecting plate (76) being connected between the first connecting rod (73) and the second connecting rod (74), and the second connecting rod (75) being slidably connected in the first slide groove (72). A second connecting plate (77) is connected between the rod (74) and the third connecting rod (75), a spring mounting plate (78) is connected to the outer sides of the two second mounting plates (71), a second spring (79) is connected between the spring mounting plate (78) and the end of the second connecting rod (74), a filling pad (710) is fixedly connected to the first connecting rod (73), a first pull rod (711) is connected to the third connecting rod (75), and a pull handle (712) is connected to the right end of the first pull rod (711).

7. A multifunctional shifting device according to claim 6, characterized in that: The toilet mechanism (8) further comprises two slide rails (81), the two slide rails (81) are fixedly connected to the bottom of the left seat frame (61), a rack (82) is provided on the inner side of one of the slide rails (81), a disc (83) is connected between the two slide rails (81), a gear ring (84) is rotatably connected to the outer side of the disc (83), a square hole (85) and four second slide grooves (86) are provided in the middle of the disc (83), and a sealing member (86) is slidably connected in the four second slide grooves (86). The sealing plate (87) is provided with a toothed portion at the bottom, and four third gears (88) are rotatably connected to the disc (83). The third gears (88) are simultaneously meshed with the gear ring (84) and the toothed portion at the bottom of the sealing plate (87). The bottom of the disc (83) is connected with a second pull rod (89) and a third slide groove (810), and a toilet bowl (811) is slidably connected in the third slide groove (810), and the top of the toilet bowl (811) is connected with a curved edge (812).

8. A multifunctional shifting device according to claim 7, characterized in that: The driving mechanism further comprises a steering shaft (31), the upper end of the telescopic shaft (31) is rotatably connected to a large sprocket (34) and a rotating rod (35), the middle part of the steering shaft (31) is rotatably connected to the front end of the chassis (1), the lower end of the steering shaft (31) is connected to a wheel frame (32), the lower end of the wheel frame (32) is rotatably connected to a small sprocket (33) and a wheel (36), and the small sprocket (33) is connected to the large sprocket (34) through a chain.

9. The multifunctional shifting device according to claim 1, characterized in that: The front end of the base frame (1) is connected to a foot pedal (12).

10. A multifunctional shifting device according to any one of claims 1 to 9, characterized in that: Armrest pads (9) are installed on the two armrest frame shells (51) and the left seat frame (61) and the right seat frame (62).

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