Multifunctional walking aid for the elderly and control method thereof

Abstract

A multifunctional walking aid for the elderly, including frame, seat, storage box, four gear assemblies and two drive motors, the seat and storage box are installed on the upper side of the frame, respectively, the left and right sides of the front of the frame are provided with connecting shafts, the lower sides of the rear of the frame are symmetrically provided with two drive motors, the input ends of two gear assemblies are rotatably connected to the connecting shafts, the input ends of the other two gear assemblies are connected to the output shafts of the drive motors, the outer sides of the four gear assemblies are all provided with triangular wheel discs, the two triangular wheel discs at the front are rotatably connected to the connecting shafts, the two triangular wheel discs at the rear are rotatably connected to the outer circumferential surfaces of the output shafts of the drive motors, wheels are arranged at the three vertices of the triangular wheel discs, and the output ends of the gear assemblies are connected with the three wheels after penetrating through the triangular wheel discs. The design is not only various in functions, but also stable in structure, safe and comfortable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of walking aid technology, in particular to a multifunctional walking aid for the elderly and a control method thereof. BACKGROUND

[0002] Due to the inconvenience of the elderly, they often need to use walking aids when going out. Currently, the commonly used walking aids are wheelchairs or walking aids. For example, a walking aid disclosed in Chinese patent CN200973805Y, the front support and the rear support are hinged through a connecting rod, the slide and the front support are fixedly connected, the front end of the rear support is slidingly connected with the slide, the front wheel is rotatably connected with the front support, the rear wheel is rotatably connected with the rear support, the front end of the seat plate is rotatably connected with the front support, the rear part of the seat plate is fixedly connected with a connecting rod, the other end of the connecting rod is rotatably connected with the front end of the rear support, the backrest is rotatably connected with the seat plate through a hinge, the handle is adjustably connected with the front support through a knob, the hand brake is rotatably connected with the handle, one end of the brake wire is connected with the hand brake, the middle part is located in the front support, and the other end is connected with the brake block. Although the walking aid can help the elderly walk, the structure is relatively simple, the function is single, and it is suitable for walking on flat road surface. When encountering complex road conditions, such as climbing stairs and climbing slopes, it cannot be conveniently used and needs to rely on external force, which is time-consuming and laborious. SUMMARY

[0003] The purpose of the present application is to overcome the defects and problems of the single function of the walking aid for the elderly in the prior art, and to provide a multifunctional walking aid for the elderly and a control method thereof.

[0004] To achieve the above purpose, the technical solution of the present application is:

[0005] A multifunctional walking aid for the elderly, comprising a frame, a seat, a storage box, four gear assemblies and two drive motors, the seat and the storage box are respectively installed on the upper side of the frame, connecting shafts are installed on the left and right sides of the front part of the frame, two drive motors are symmetrically installed on the lower side of the rear part of the frame, the input ends of two gear assemblies are rotatably connected to the connecting shafts, the input ends of the other two gear assemblies are connected to the output shafts of the drive motors, triangular wheel discs are installed on the outer sides of the four gear assemblies, the two triangular wheel discs located at the front part are rotatably connected to the connecting shafts, the two triangular wheel discs located at the rear part are rotatably connected to the outer peripheries of the output shafts of the drive motors, wheels are arranged at the three vertices of the triangular wheel discs, and the output ends of the gear assemblies are connected with the three wheels after penetrating through the triangular wheel discs.

[0006] The triangular wheel disc comprises a first mounting shaft and two symmetrically arranged triangular plates, the first mounting shaft is connected to the side of the triangular plate close to the frame, the two first mounting shafts at the front are respectively sleeved on the two connecting shafts, the two first mounting shafts at the rear are respectively sleeved on the output shafts of the two driving motors, the two triangular plates are connected to each other through a plurality of connecting rods, a plurality of second mounting shafts are rotationally connected between the two triangular plates, the second mounting shafts close to the center of the two triangular wheel discs at the rear pass through the first mounting shafts and are respectively connected to the output shafts of the two driving motors, the gear assembly comprises a plurality of gears, the plurality of gears are connected to the plurality of second mounting shafts one by one, and the plurality of gears are arranged in sequence along the center of the triangular plate to the three vertex directions and are engaged.

[0007] The first mounting shaft is connected with a sprocket at one end close to the frame, the outer periphery surfaces of the two sprockets on the left side are engaged and connected with chains, and the outer periphery surfaces of the two sprockets on the right side are engaged and connected with chains.

[0008] The frame comprises a bottom frame, a top frame and a connecting plate, the connecting shafts are connected to the left and right sides of the front of the bottom frame, the top frame is connected to the upper side of the bottom frame through a plurality of connecting columns, the storage box is connected to the upper rear side of the top frame, and the connecting plate is connected to the upper front side of the top frame.

[0009] The seat comprises a cushion, an extension frame, a lifting rod, a handle, a protective belt and a first handle, the cushion is located on the upper side of the connecting plate, the extension frame can be up and down, the upper side of the extension frame is connected to the lower side of the cushion, the lower side of the extension frame is connected to the upper side of the frame, the lifting rod is sleeved on the left and right sides of the extension frame, the two sides of the protective belt are respectively sleeved on the outer periphery surfaces of the two lifting rods, the upper end of the lifting rod is connected with the handle, and the upper side of the handle is connected with the first handle.

[0010] The extension frame comprises a first connecting rod, a second connecting rod and two third connecting rods, the two third connecting rods are respectively abutted to the lower side of the cushion, the first connecting rod and the second connecting rod are distributed in an X shape, the upper ends of the first connecting rod and the second connecting rod are respectively connected to the two third connecting rods, the lower ends of the first connecting rod and the second connecting rod are respectively connected to the bottom frame, the center of the second connecting rod is hingedly connected to the center of the first connecting rod, the outer periphery surface of the third connecting rod is connected with a mounting column, the upper end surface of the mounting column is provided with a clamping groove, and the lifting rod is clamped in the clamping groove.

[0011] The seat further comprises a second handle, the second handle is rotationally connected to one side of the handle and is located below the first handle, and the second handle is provided with a through slot for the palm to pass through.

[0012] The lower side of the frame is connected with a steering assembly, the steering assembly comprises a steering frame, the lower side of the steering frame is connected with a push rod motor, the lower end of the push rod of the push rod motor is connected with a disc, the upper side of the disc is hingedly connected with a plurality of first steering rods, the plurality of first steering rods are circumferentially distributed on the disc, the upper end of the first steering rod is hingedly connected with a second steering rod, one end of the plurality of second steering rods is respectively hingedly connected to the lower side of the steering frame, the other end of the plurality of second steering rods is rotatably connected with a rubber wheel, and one of the rubber wheels is connected with a hub motor.

[0013] The multifunctional old people's walking aid vehicle further comprises a double-output reduction motor connected to the lower side of the frame, and two output shafts of the double-output reduction motor are respectively connected with input ends of two drive motors.

[0014] A control method of a multifunctional old people's walking aid vehicle, the control method comprising a walking mode, a climbing mode and a steering mode.

[0015] Walking mode:

[0016] The drive motor drives three wheels at the rear of the frame to rotate, two of the three wheels are in contact with the ground and roll, and at the same time, two wheels at the front of the frame are in contact with the ground and roll.

[0017] Climbing mode:

[0018] S1, when the wheels at the front of the frame roll until contacting the first step, the triangular wheel disc at the front of the frame rotates on the connecting shaft, the three wheels rotate to above the first step in turn, when two of the three wheels at the front of the frame are in contact with the upper surface of the step at the same time, the walking aid vehicle enters the walking mode, and the wheels at the front of the frame contact the second step.

[0019] S2, repeat step S1 until the wheels at the rear of the frame contact the first step, the triangular wheel disc at the rear of the frame rotates on the output shaft of the drive motor, the three wheels at the rear of the frame rotate to above the first step in turn, when two of the three wheels at the rear of the frame are in contact with the upper surface of the step at the same time, the walking aid vehicle enters the walking mode.

[0020] S1, repeat steps S1 and S2, when the wheels at the front of the frame pass all the steps, two of the three wheels at the front of the frame are in contact with the ground and roll on the ground, and then repeat step S2 until all the wheels pass all the steps, and the walking aid vehicle enters the walking mode.

[0021] Steering mode:

[0022] The driving motor stops working, and the push rod motor pulls the disc to move upward, the second steering rod is rotated downward under the action of the disc and the first steering rod, the rubber wheel contacts the ground to lift the frame, the wheel is suspended, and then the wheel hub motor works to drive the rubber wheel to make a circular motion along the axis of the bogie, so that the frame is steered, after steering, the wheel hub motor stops working, the push rod motor pushes the disc to move downward, so that the rubber wheel is suspended, the wheel contacts the ground, and the steering enters the walking mode.

[0023] Compared with the prior art, the present application has the following advantages:

[0024] 1. In the multifunctional old people's walking aid vehicle and the control method thereof, the storage box is arranged, so that the excess items can be conveniently placed in the storage box; the driving motor is arranged to drive the wheels to rotate, so that automatic walking can be realized; the triangular wheel disc is arranged and can rotate around the output shaft of the driving motor and the connecting shaft on the frame, so that when climbing stairs, the wheels can not only rotate by themselves but also rotate around the triangular wheel disc, so that the walking aid vehicle has the function of climbing stairs. Therefore, the present application is convenient to use and has various functions.

[0025] 2. In the multifunctional old people's walking aid vehicle and the control method thereof, the bogie is arranged, when it is necessary to turn around in place, the disc is moved by the push rod motor, so as to drive the rubber wheel to move downward and contact the ground, the wheel is suspended, the rubber wheel is rotated by the wheel hub motor, so that the walking aid vehicle rotates in place, after turning around, the rubber wheel moves upward, the wheel falls to the ground, and walking can be performed. Therefore, the present application is convenient to turn around and has high reliability.

[0026] 3. In the multifunctional old people's walking aid vehicle and the control method thereof, the telescopic frame is arranged, the telescopic frame is driven by the connecting rod, so that the height of the telescopic frame can be adjusted, the lifting rod is arranged and can move up and down in the mounting column, so that the height of the handle and the handlebar can be adjusted, the sitting posture can be adjusted conveniently, and sitting is more comfortable, the first handlebar and the second handlebar are arranged, when it is necessary to get off the vehicle, the old people can stand stably when standing up, and the second handlebar can be held, so that the old people do not fall off the vehicle when the walking aid vehicle is walking. Therefore, the present application is convenient to use, safe and comfortable.

[0027] 4. In the multifunctional old people's walking aid vehicle and the control method thereof, the connection mode of the plurality of gears is adopted, when climbing uphill or stairs, the wheels can be prevented from reversing; the transmission mode of the chain and sprocket is adopted, so that the front wheels and the rear wheels are connected together, the driving motor directly drives the triangular wheel disc at the rear, the front triangular wheel disc can be directly driven to perform the overturning motion through chain transmission; the speed reducer motor is arranged to reduce the speed and increase the torque, so that the low-speed and large-torque power can be output to the triangular wheel disc at the rear in a bidirectional manner, and climbing stairs is facilitated. Therefore, the present application has high reliability and stable structure. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the multifunctional elderly mobility aid vehicle of this invention from one perspective.

[0029] Figure 2 This is a structural schematic diagram of the multifunctional elderly mobility aid vehicle of the present invention from another perspective.

[0030] Figure 3 This is a schematic diagram of the frame structure in this invention.

[0031] Figure 4 This is a structural schematic diagram of the seat in this invention.

[0032] Figure 5 This is a schematic diagram of the telescopic frame in this invention.

[0033] Figure 6 This is a schematic diagram of the steering component in this invention.

[0034] Figure 7 This is a schematic diagram of the structure of the triangular wheel, drive wheel assembly, chain, sprocket, and wheel in this invention.

[0035] Figure 8 This is a schematic diagram of the triangular wheel structure in this invention.

[0036] Figure 9 This is a schematic diagram of the drive wheel assembly in this invention.

[0037] In the diagram: Frame 1, Base frame 11, Connecting plate 12, Connecting column 13, Connecting shaft 14, Top frame 15, Seat 2, Seat cushion 21, Telescopic frame 22, First link 221, Second link 222, Third link 223, Mounting column 224, Slot 225, Lifting rod 23, Handle 24, Protective belt 25, First handle 26, Second handle 27, Through slot 28, Triangular wheel 3, Triangular plate 31, First mounting shaft 32, Second mounting shaft 33, Connecting rod 34, Sprocket 35, Chain 36, Drive wheel set 4, Gear 41, Drive motor 5, Steering assembly 6, Bogie 61, Push rod motor 62, Disc 63, First steering rod 64, Second steering rod 65, Rubber wheel 66, Storage box 7, Wheel 8, Dual output geared motor 9. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] See Figures 1 to 9The utility model provides a multifunctional old people's walking aid vehicle, including frame 1, seat 2, storage box 7, four gear assemblies 4 and two drive motors 5, seat 2 and storage box 7 are installed on the upside of frame 1 respectively, the left and right sides of the front of frame 1 are installed with connecting shaft 14, two drive motors 5 are installed on the downside of the rear of frame 1 symmetrically, the input end of two gear assemblies 4 is rotatably connected to connecting shaft 14, the input end of other two gear assemblies 4 is connected to the output shaft of drive motor 5, the outside of four gear assemblies 4 is installed with triangular wheel disc 3, two triangular wheel discs 3 in the front are rotatably connected to connecting shaft 14, two triangular wheel discs 3 in the rear are rotatably connected to the outer circumferential surface of the output shaft of drive motor 5, three vertexes of triangular wheel disc 3 are all provided with wheel 8, and the output end of gear assembly 4 is connected with three wheels 8 after passing through triangular wheel disc 3.

[0040] Triangular wheel disc 3 includes first mounting shaft 32 and two symmetrical triangular plates 31, first mounting shaft 32 is connected to one side of triangular plate 31 close to frame 1, two first mounting shafts 32 in the front are respectively sleeved on two connecting shafts 14, two first mounting shafts 32 in the rear are respectively sleeved on the output shaft of two drive motors 5, a plurality of connecting rods 34 are connected to each other between two triangular plates 31, a plurality of second mounting shafts 33 are rotatably connected between two triangular plates 31, the second mounting shaft 33 close to the center of two triangular wheel discs 3 in the rear is connected to the output shaft of two drive motors 5 after passing through first mounting shaft 32, gear assembly 4 includes a plurality of gears 41, a plurality of gears 41 are connected one by one with a plurality of second mounting shafts 33, a plurality of gears 41 are sequentially arranged along the center of triangular plate 31 to three vertexes and are engaged.

[0041] One end of first mounting shaft 32 close to frame 1 is connected with sprocket 35, the outer circumferential surface of two sprockets 35 on the left side is engagedly connected with chain 36, and the outer circumferential surface of two sprockets 35 on the right side is engagedly connected with chain 36.

[0042] Frame 1 includes base frame 11, top frame 15 and connecting plate 12, connecting shaft 14 is connected to the left and right sides of the front of base frame 11, top frame 15 is connected to the upside of base frame 11 through a plurality of connecting columns 13, storage box 7 is connected to the upper rear side of top frame 15, and connecting plate 12 is connected to the upper front side of top frame 15.

[0043] The seat 2 comprises a cushion 21, an extension frame 22, a lifting rod 23, a handle 24, a protective belt 25, a first handle 26, the cushion 21 is located on the upper side of the connecting plate 12, the extension frame 22 can be up and down, the upper side of the extension frame 22 is connected to the lower side of the cushion 21, the lower side of the extension frame 22 is connected to the upper side of the vehicle frame 1, the lifting rod 23 is sleeved on the left and right sides of the extension frame 22, the protective belt 25 is sleeved on the outer periphery of the two lifting rods 23 respectively, the upper end of the lifting rod 23 is connected with the handle 24, and the upper side of the handle 24 is connected with the first handle 26.

[0044] The extension frame 22 comprises a first connecting rod 221, a second connecting rod 222 and two third connecting rods 223, the two third connecting rods 223 are respectively abutted to the lower side of the cushion 21, the first connecting rod 221 and the second connecting rod 222 are distributed in X shape, the upper ends of the first connecting rod 221 and the second connecting rod 222 are respectively connected to the two third connecting rods 223, the lower ends of the first connecting rod 221 and the second connecting rod 222 are respectively connected to the bottom frame 11, the center of the second connecting rod 222 is hinged to the center of the first connecting rod 221, the outer periphery of the third connecting rod 223 is connected with a mounting column 224, the upper end surface of the mounting column 224 is provided with a clamping groove 225, and the lifting rod 23 is clamped in the clamping groove 225.

[0045] The seat 2 further comprises a second handle 27, the second handle 27 is rotationally connected to one side of the handle 24 and located below the first handle 26, and the second handle 27 is provided with a through slot 28 for the palm to pass through.

[0046] The lower side of the vehicle frame 1 is connected with a steering assembly 6, the steering assembly 6 comprises a steering frame 61, the lower side of the steering frame 61 is connected with a push rod motor 62, the lower end of the push rod of the push rod motor 62 is connected with a disc 63, the upper side of the disc 63 is hinged with a plurality of first steering rods 64, the plurality of first steering rods 64 are circumferentially distributed on the disc 63, the upper end of the first steering rod 64 is hinged with a second steering rod 65, one end of the plurality of second steering rods 65 is respectively hinged to the lower side of the steering frame 61, the other end of the plurality of second steering rods 65 is rotationally connected with a rubber wheel 66, and one of the rubber wheels 66 is connected with a hub motor.

[0047] The multifunctional old people's walking aid vehicle further comprises a double-output speed reduction motor 9, the double-output speed reduction motor 9 is connected to the lower side of the vehicle frame 1, and the two output shafts of the double-output speed reduction motor 9 are respectively connected with the input ends of the two drive motors 5.

[0048] A control method of a multifunctional old people's walking aid vehicle, the control method comprises a walking mode, a climbing mode and a steering mode;

[0049] Walking mode:

[0050] The driving motor 5 drives the three wheels 8 at the rear of the frame 1 to rotate, two of the three wheels 8 are in contact with the ground and roll, and at the same time, the two wheels 8 at the front of the frame 1 are in contact with the ground and roll;

[0051] Climbing stairs mode:

[0052] S1, the wheels 8 at the front of the frame 1 roll until they contact the first step, the triangular wheel disc 3 at the front of the frame 1 rotates on the connecting shaft 14, and the three wheels 8 rotate to above the first step in turn, when two of the three wheels 8 at the front of the frame 1 are in contact with the upper surface of the step at the same time, the walker enters the walking mode, until the wheels 8 at the front of the frame 1 contact the second step;

[0053] S2, repeat step S1 until the wheels 8 at the rear of the frame 1 contact the first step, the triangular wheel disc 3 at the rear of the frame 1 rotates on the output shaft of the driving motor 5, and the three wheels 8 at the rear of the frame 1 rotate to above the first step in turn, when two of the three wheels 8 at the rear of the frame 1 are in contact with the upper surface of the step at the same time, the walker enters the walking mode;

[0054] S3, repeat steps S1 and S2, when the wheels 8 at the front of the frame 1 pass all the steps, two of the three wheels 8 at the front of the frame 1 are in contact with the ground and roll on the ground, then repeat step S2, until all the wheels 8 pass all the steps, the walker enters the walking mode;

[0055] Steering mode:

[0056] The driving motor 5 stops working, and at the same time, the push rod motor 62 pulls the disc 63 to move upward, the second steering rod 65 rotates downward under the action of the disc 63 and the first steering rod 64, the rubber wheel 66 contacts the ground to lift the frame 1, the wheels 8 are suspended, then the wheel hub motor works to drive the rubber wheel 66 to make circular motion along the axis of the steering frame 61, so that the frame 1 is steered, after steering, the wheel hub motor stops working, the push rod motor 62 pushes the disc 63 to move downward, so that the rubber wheel 66 is suspended, the wheels 8 contact the ground, and after steering, the walker enters the walking mode.

[0057] The principle of the application is described as follows:

[0058] Before use, the seat 2 can be removed, the height of the telescopic frame 22 is adjusted by rotating the first connecting rod 221 and the second connecting rod 222, the lower ends of the first connecting rod 221 and the second connecting rod 222 are provided with mounting rods, meanwhile, mounting holes matched with the mounting rods are formed on the chassis 11, the mounting rods are inserted into the mounting holes to realize the mounting of the telescopic frame 22, the outer side of the mounting column 224 is provided with a connecting piece, the connecting piece is designed in an arc shape, the mounting column 224 is in contact with the third connecting rod 223 through the connecting piece, the connecting piece is connected and fixed with the second connecting rod 223 through bolts, meanwhile, the lifting rod 23 is inserted into the clamping groove 225 in the mounting column 224, the height of the lifting rod 23 is adjusted and then fixed, the handle 24 is inserted into the upper end of the lifting rod 23 and fixed through bolts, and the protective belt 25 can be made of leather.

[0059] In use, the old man holds the first handle 26 and the second handle 27, the feet can be placed on the cross bars of the chassis 11, the personal belongings are placed in the storage box 7, then the two output reduction motors 9 are started to drive the two drive motors 5 to work, the drive motors 5 drive the central gear 41 to rotate, the multiple gears 41 are sequentially meshed and rotated to drive the three wheels 8 at the three vertices to rotate synchronously under the drive of the gears 41, and walking is realized, when it is needed to climb stairs, the wheels 8 at the front part contact the steps to drive the triangular wheel disc 3 to rotate, the sprocket 35 at the front part is driven to rotate, the sprocket 35 at the rear part is synchronously driven to rotate, and the three wheels 8 at the rear part are sequentially rolled on the ground, and the climbing of the stairs is realized.

[0060] Embodiment 1

[0061] Referring to Figures 1 to 9 A multifunctional old people's walking aid vehicle includes a vehicle frame 1, a seat 2, a storage box 7, four gear assemblies 4 and two drive motors 5, the seat 2 and the storage box 7 are respectively installed on the upper side of the vehicle frame 1, connecting shafts 14 are installed on the left and right sides of the front part of the vehicle frame 1, the two drive motors 5 are symmetrically installed on the lower side of the rear part of the vehicle frame 1, the input ends of the two gear assemblies 4 are rotationally connected to the connecting shafts 14, the input ends of the other two gear assemblies 4 are connected to the output shafts of the drive motors 5, the outer sides of the four gear assemblies 4 are all provided with triangular wheel discs 3, the two triangular wheel discs 3 at the front part are rotationally connected to the connecting shafts 14, the two triangular wheel discs 3 at the rear part are rotationally connected to the outer circumferential surfaces of the output shafts of the drive motors 5, the three vertices of the triangular wheel disc 3 are all provided with wheels 8, and the output ends of the gear assemblies 4 are connected with the three wheels 8 after penetrating through the triangular wheel disc 3.

[0062] The frame 1 comprises a bottom frame 11, a top frame 15, a connecting plate 12, the connecting shaft 14 is connected to the left and right sides of the front of the bottom frame 11, the top frame 15 is connected to the upper side of the bottom frame 11 through a plurality of connecting columns 13, the receiving box 7 is connected to the upper rear side of the top frame 15, and the connecting plate 12 is connected to the upper front side of the top frame 15.

[0063] The lower side of the frame 1 is connected with a steering assembly 6, the steering assembly 6 comprises a steering frame 61, the lower side of the steering frame 61 is connected with a push rod motor 62, the lower end of the push rod of the push rod motor 62 is connected with a disc 63, the upper side of the disc 63 is hingedly connected with a plurality of first steering rods 64, the plurality of first steering rods 64 are circumferentially distributed on the disc 63, the upper end of the first steering rod 64 is hingedly connected with a second steering rod 65, one end of the plurality of second steering rods 65 is respectively hingedly connected to the lower side of the steering frame 61, the other end of the plurality of second steering rods 65 is rotatably connected with a rubber wheel 66, and one of the rubber wheels 66 is connected with a hub motor in the rubber wheel 66.

[0064] The multifunctional old people's walking aid vehicle further comprises a double-output reduction motor 9, the double-output reduction motor 9 is connected to the lower side of the frame 1, and the two output shafts of the double-output reduction motor 9 are connected with the input ends of the two drive motors 5 respectively.

[0065] A control method of a multifunctional old people's walking aid vehicle, the control method comprising a walking mode, a climbing mode and a steering mode;

[0066] Walking mode:

[0067] The drive motor 5 drives the three wheels 8 at the rear of the frame 1 to rotate, two of the three wheels 8 are in contact with and roll on the ground, and at the same time, the two wheels 8 at the front of the frame 1 are in contact with and roll on the ground.

[0068] Climbing mode:

[0069] S1, the wheels 8 at the front of the frame 1 roll until contacting the first step, the triangular wheel disc 3 at the front of the frame 1 rotates on the connecting shaft 14, and the three wheels 8 rotate to above the first step in sequence, when two of the three wheels 8 at the front of the frame 1 are in contact with the upper surface of the step at the same time, the walking aid vehicle enters the walking mode, and until the wheels 8 at the front of the frame 1 contact the second step.

[0070] S2, repeat step S1 until the wheels 8 at the rear of the frame 1 contact the first step, the triangular wheel disc 3 at the rear of the frame 1 rotates on the output shaft of the driving motor 5, the three wheels 8 at the rear of the frame 1 rotate in turn above the first step, when two wheels 8 at the rear of the frame 1 contact the upper surface of the step at the same time, the scooter enters the walking mode;

[0071] S3, repeat steps S1 and S2, when the wheels 8 at the front of the frame 1 pass all the steps, two wheels 8 at the front of the frame 1 contact and roll on the ground, then repeat step S2 until all the wheels 8 pass all the steps, the scooter enters the walking mode;

[0072] Turning mode:

[0073] The driving motor 5 stops working, and the push rod motor 62 pulls the disc 63 to move upward, the second steering rod 65 rotates downward under the action of the disc 63 and the first steering rod 64, the rubber wheel 66 contacts the ground to lift the frame 1, the wheels 8 are suspended, then the wheel hub motor works to drive the rubber wheel 66 to make circular motion along the axis of the steering frame 61, so that the frame 1 turns, after turning, the wheel hub motor stops working, the push rod motor 62 pushes the disc 63 to move downward, so that the rubber wheel 66 is suspended, the wheels 8 contact the ground, and the turning enters the walking mode.

[0074] Example 2:

[0075] The basic content is the same as example 1, the difference is that:

[0076] See Figures 4 to 5The seat 2 comprises a cushion 21, an extension frame 22, a lifting rod 23, a handle 24, a protective belt 25, a first handle 26, the cushion 21 is located on the upper side of the connecting plate 12, the extension frame 22 can be telescoped up and down, the upper side of the extension frame 22 is connected to the lower side of the cushion 21, the lower side of the extension frame 22 is connected to the upper side of the vehicle frame 1, the lifting rod 23 is sleeved on the left and right sides of the extension frame 22, the protective belt 25 is sleeved on the outer periphery of the two lifting rods 23 respectively, the upper end of the lifting rod 23 is connected with the handle 24, the upper side of the handle 24 is connected with the first handle 26, the extension frame 22 comprises a first connecting rod 221, a second connecting rod 222 and two third connecting rods 223, the two third connecting rods 223 are respectively abutted on the lower side of the cushion 21, the first connecting rod 221 and the second connecting rod 222 are distributed in X shape, the upper ends of the first connecting rod 221 and the second connecting rod 222 are respectively connected to the two third connecting rods 223, the lower ends of the first connecting rod 221 and the second connecting rod 222 are respectively connected to the base frame 11, the center of the second connecting rod 222 is hingedly connected to the center of the first connecting rod 221, the outer periphery of the third connecting rod 223 is connected with a mounting column 224, the upper end surface of the mounting column 224 is provided with a clamping groove 225, the lifting rod 23 is clamped in the clamping groove 225, the seat 2 further comprises a second handle 27, the second handle 27 is rotatably connected to one side of the handle 24 and located below the first handle 26, the second handle 27 is provided with a through slot 28 for the palm to pass through.

[0077] Embodiment 3:

[0078] The basic content is equivalent to that of embodiment 1, except that:

[0079] Referring to Figures 7 to 9 The triangular wheel disc 3 comprises a first mounting shaft 32 and two symmetrically arranged triangular plates 31, the first mounting shaft 32 is connected to one side of the triangular plate 31 close to the vehicle frame 1, the two first mounting shafts 32 located at the front are sleeved on the two connecting shafts 14 respectively, the two first mounting shafts 32 located at the rear are sleeved on the output shafts of the two drive motors 5 respectively, the two triangular plates 31 are connected to each other through a plurality of connecting rods 34, a plurality of second mounting shafts 33 are rotatably connected between the two triangular plates 31, the second mounting shafts 33 close to the center of the two triangular wheel discs 3 located at the rear pass through the first mounting shaft 32 and are connected to the output shafts of the two drive motors 5 respectively, the gear assembly 4 comprises a plurality of gears 41, the plurality of gears 41 are connected to the plurality of second mounting shafts 33 one by one, the plurality of gears 41 are arranged in sequence along the center of the triangular plate 31 to the three vertex directions and are engaged.

[0080] The first mounting shaft 32 is connected with a sprocket wheel 35 near one end of the frame 1, the outer circumferential surface of the two sprocket wheels 35 on the left is engaged with a chain 36, and the outer circumferential surface of the two sprocket wheels 35 on the right is engaged with a chain 36.

Claims

1. A multifunctional walker for the elderly, characterized in that: The utility model provides a kind of electric vehicle, including frame (1), seat (2), storage box (7), four gear assemblies (4) and two drive motors (5), the seat (2) and storage box (7) are respectively installed on the upper side of the frame (1), the frame (1) is located at the left and right sides of front and is equipped with connecting shaft (14), two drive motors (5) are symmetrically installed on the lower side of the rear of the frame (1), the input end of two gear assemblies (4) is rotatably connected to the connecting shaft (14), the input end of other two gear assemblies (4) is connected to the output shaft of drive motor (5), the outside of four gear assemblies (4) is equipped with triangular wheel disc (3), two triangular wheel discs (3) located at the front are rotatably connected to the connecting shaft (14), two triangular wheel discs (3) located at the rear are rotatably connected to the outer circumferential surface of the output shaft of drive motor (5), three vertices of the triangular wheel disc (3) are all provided with wheel (8), the output end of gear assembly (4) is connected with three wheels (8) after passing through the triangular wheel disc (3); The triangular wheel disc (3) includes first mounting shaft (32) and two symmetrically arranged triangular plates (31), the first mounting shaft (32) is connected to the side of the triangular plate (31) close to the frame (1), two first mounting shafts (32) located at the front are respectively sleeved on two connecting shafts (14), two first mounting shafts (32) located at the rear are respectively sleeved on the output shaft of two drive motors (5), two triangular plates (31) are interconnected by a plurality of connecting rods (34), a plurality of second mounting shafts (33) are rotatably connected between two triangular plates (31), the second mounting shaft (33) close to the center of two triangular wheel discs (3) located at the rear is connected to the output shaft of two drive motors (5) after passing through first mounting shaft (32), the gear assembly (4) includes a plurality of gears (41), a plurality of gears (41) are connected one by one with a plurality of second mounting shafts (33), a plurality of gears (41) are sequentially arranged along the center of the triangular plate (31) to three vertex directions and are engaged; The lower side of the frame (1) is connected with steering assembly (6), the steering assembly (6) includes steering frame (61), the lower side of the steering frame (61) is connected with push rod motor (62), the lower end of the push rod of the push rod motor (62) is connected with disc (63), the upper side of the disc (63) is hinged with a plurality of first steering rods (64), a plurality of first steering rods (64) are circumferentially distributed on the disc (63), the upper end of the first steering rod (64) is hinged with second steering rod (65), one end of a plurality of second steering rods (65) is respectively hinged to the lower side of the steering frame (61), the other end of a plurality of second steering rods (65) is rotatably connected with rubber wheel (66), one of the rubber wheels (66) is connected with wheel hub motor in. When the driving motor (5) stops working, the push rod motor (62) pulls the disc (63) to move upward, the second steering rod (65) rotates downward under the action of the disc (63) and the first steering rod (64), the rubber wheel (66) contacts the ground to lift the vehicle frame (1), the wheel (8) is suspended, then the wheel hub motor works to drive the rubber wheel (66) to make circular motion along the axis of the bogie (61), so that the vehicle frame (1) turns, after turning, the wheel hub motor stops working, the push rod motor (62) pushes the disc (63) to move downward, so that the rubber wheel (66) is suspended, the wheel (8) contacts the ground, and after turning, the walking mode is entered.

2. The multi-functional walking aid for old people according to claim 1, characterized in that: The first mounting shaft (32) is connected with a chain wheel (35) at one end close to the vehicle frame (1), the outer periphery surfaces of the two chain wheels (35) on the left are engaged with a chain (36), and the outer periphery surfaces of the two chain wheels (35) on the right are engaged with a chain (36).

3. The multi-functional walking aid for old people according to claim 1, characterized in that: The vehicle frame (1) comprises a bottom frame (11), a top frame (15) and a connecting plate (12), the connecting shaft (14) is connected to the left and right sides of the front of the bottom frame (11), the top frame (15) is connected to the upper side of the bottom frame (11) through a plurality of connecting columns (13), the storage box (7) is connected to the upper rear side of the top frame (15), and the connecting plate (12) is connected to the upper front side of the top frame (15).

4. The multi-functional walking aid for old people according to claim 3, characterized in that: The seat (2) comprises a cushion (21), an extension frame (22), a lifting rod (23), a handle (24), a protective belt (25) and a first handle (26), the cushion (21) is located on the upper side of the connecting plate (12), the extension frame (22) can be extended upward and downward, the upper side of the extension frame (22) is connected to the lower side of the cushion (21), the lower side of the extension frame (22) is connected to the upper side of the vehicle frame (1), the lifting rod (23) is sleeved on the left and right sides of the extension frame (22), the protective belt (25) is sleeved on the outer periphery surfaces of the two lifting rods (23), the upper end of the lifting rod (23) is connected with the handle (24), and the upper side of the handle (24) is connected with the first handle (26).

5. The multi-functional walking aid for old people according to claim 4, characterized in that: The telescopic frame (22) comprises a first connecting rod (221), a second connecting rod (222) and two third connecting rods (223), the two third connecting rods (223) abut the lower side of the cushion (21) respectively, the first connecting rod (221) and the second connecting rod (222) are distributed in an X shape, the upper ends of the first connecting rod (221) and the second connecting rod (222) are connected to the two third connecting rods (223) respectively, the lower ends of the first connecting rod (221) and the second connecting rod (222) are connected to the chassis (11) respectively, the center of the second connecting rod (222) is hingedly connected to the center of the first connecting rod (221), the outer circumferential surface of the third connecting rod (223) is connected with a mounting column (224), the upper end surface of the mounting column (224) is provided with a clamping groove (225), and the lifting rod (23) is clamped in the clamping groove (225).

6. The multi-functional walking aid for old people according to claim 4, characterized in that: The seat (2) further comprises a second handle (27), which is rotationally connected to one side of the handle (24) and located below the first handle (26), and the second handle (27) is provided with a through slot (28) for the palm to pass through.

7. The multi-functional walking aid for old people according to claim 1, characterized in that: The multifunctional old people's walking aid vehicle further comprises a double-output speed reduction motor (9), which is connected to the lower side of the vehicle frame (1), and the two output shafts of the double-output speed reduction motor (9) are connected with the input ends of the two driving motors (5) respectively.

8. A control method of the multifunctional walker for the elderly according to claim 1, characterized in that, The control method comprises a walking mode, a stair climbing mode and a turning mode. Walking mode: The driving motor (5) drives the three wheels (8) at the rear of the vehicle frame (1) to rotate, two of the three wheels (8) are in contact with and roll on the ground, and at the same time, the two wheels (8) at the front of the vehicle frame (1) are in contact with and roll on the ground. Stair climbing mode: S1, the wheels (8) at the front of the vehicle frame (1) roll until they contact the first step, the triangular wheel disc (3) at the front of the vehicle frame (1) rotates on the connecting shaft (14), and the three wheels (8) rotate to above the first step in turn, when two of the three wheels (8) at the front of the vehicle frame (1) are in contact with the upper surface of the step at the same time, the walking aid vehicle enters the walking mode, and the wheels (8) at the front of the vehicle frame (1) contact the second step; S2, repeat step S1 until the wheels (8) at the rear of the vehicle frame (1) contact the first step, the triangular wheel disc (3) at the rear of the vehicle frame (1) rotates on the output shaft of the driving motor (5), and the three wheels (8) at the rear of the vehicle frame (1) rotate to above the first step in turn, when two of the three wheels (8) at the rear of the vehicle frame (1) are in contact with the upper surface of the step at the same time, the walking aid vehicle enters the walking mode; S3, repeat steps S1 and S2, when the wheels (8) at the front of the vehicle frame (1) pass all the steps, two of the three wheels (8) at the front of the vehicle frame (1) are in contact with and roll on the ground, and then repeat step S2 until all the wheels (8) pass all the steps, and the walking aid vehicle enters the walking mode; Turning mode: The driving motor (5) stops working, and the push rod motor (62) pulls the disc (63) to move upward, the second turning rod (65) rotates downward under the action of the disc (63) and the first turning rod (64), the rubber wheel (66) contacts the ground to lift the vehicle frame (1), the wheel (8) is suspended, then the wheel hub motor works to drive the rubber wheel (66) to make circular motion along the axis of the bogie (61), so that the vehicle frame (1) turns, after turning, the wheel hub motor stops working, the push rod motor (62) pushes the disc (63) to move downward, so that the rubber wheel (66) is suspended, the wheel (8) contacts the ground, and the turning enters the walking mode.

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