Multifunctional electric wheelchair

Abstract

The utility model belongs to the technical field of intelligent wheelchairs, and particularly relates to a multifunctional electric wheelchair which comprises a wheelchair body, the wheelchair body comprises a frame, a seat cushion, armrests, a backrest, a first connecting rod and a fixing clamp, the seat cushion is fixedly connected to the upper face of the frame, and the rear side of the seat cushion is rotationally connected with the lower end of the backrest; the upper end of the first connecting rod is fixedly connected with the middle of the lower side of the backrest, a case is arranged in the middle of the frame, a rail frame is arranged above the case, a threaded rod is arranged in the rail frame, a pushing structure is arranged on the threaded rod, and a second motor is arranged in front of the threaded rod; a second motor drives a threaded rod to rotate, the threaded rod rotates to drive a threaded block to move front and back in a rail frame, then a second connecting rod and a connecting clamp are driven to move front and back, the connecting clamp drives a first connecting rod to rotate and slides up and down in a sliding groove at the same time, the first connecting rod drives a backrest to rotate, and the angle of the backrest is freely adjusted; and the comfort of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of intelligent wheelchair, specifically a multifunctional electric wheelchair. BACKGROUND

[0002] The wheelchair is composed of a wheelchair frame, wheels, a seat cushion, armrests and other components, and is mainly used as a device for the physical rehabilitation of patients and as a walking aid for the injured. With the improvement of consumers' purchasing power, various electric wheelchairs have appeared on the market. Electric wheelchairs can greatly improve the convenience of users.

[0003] In the prior art, the publication number CN117731492A provides an intelligent wheelchair, which comprises a battery box, the inner side of the battery box is provided with a storage battery, the upper side of the battery box is provided with a seat cushion plate, one end of the seat cushion plate is fixed with a backrest plate, both sides of the seat cushion plate are provided with two armrests, and the front end of the battery box is fixed with two guide wheel supports. The height intelligent adjusting mechanism can adjust the height of the two main wheels, thereby adjusting the height of the whole wheelchair and the ground. When the speed is fast, the height of the whole wheelchair is lower, which can effectively lower the center of gravity, thereby greatly improving the stability of the wheelchair during high-speed driving, preventing the wheelchair from swinging left and right when the speed is fast, and improving the safety. Similarly, if the height of the whole wheelchair is increased when driving at low speed, the passing performance of the wheelchair can be effectively improved, so that the wheelchair can pass over rough road surfaces at low speed.

[0004] The height intelligent adjusting mechanism in the above-mentioned patent can adjust the height of the two main wheels, thereby adjusting the height of the whole wheelchair and the ground. When the speed is fast, the height of the whole wheelchair is lower, which can effectively lower the center of gravity, thereby greatly improving the stability of the wheelchair during high-speed driving, preventing the wheelchair from swinging left and right when the speed is fast, and improving the safety. Similarly, if the height of the whole wheelchair is increased when driving at low speed, the passing performance of the wheelchair can be effectively improved, so that the wheelchair can pass over rough road surfaces at low speed. However, the intelligent wheelchair still has some problems.

[0005] The backrest angle of the intelligent wheelchair cannot be adjusted like the traditional intelligent wheelchair. Long-term use of the intelligent wheelchair can cause the user to maintain the same sitting posture for a long time, which can cause compression of the user's spine and discomfort.

[0006] Therefore, a multifunctional electric wheelchair is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0007] (I) Technical problems solved

[0008] The utility model provides a kind of multifunctional electric wheelchair, solve the problem that user is uncomfortable in the prior art of intelligent wheelchair when using, user keeps the same sitting posture for a long time.

[0009] (II) Technical solutions

[0010] To achieve the above object, the utility model provides the following technical scheme: a kind of multifunctional electric wheelchair, including wheelchair main body, the wheelchair main body includes frame, cushion, handrail, backrest, first connecting rod and fixed card, the frame upper surface is fixedly connected cushion, the rear side of the cushion is rotatably connected with the lower end of backrest, the lower end of two handrails is fixedly connected with the upper surface of the rear side of cushion, the upper end of first connecting rod is fixedly connected with the lower side of backrest, two fixed cards are fixed in frame both sides, first motor is provided in the middle of fixed card, gear is provided in the left and right sides of first motor, machine case is provided in the middle of frame, brushless motor is provided in machine case, wheel is provided in the both sides of machine case, track frame is provided above machine case, threaded rod is provided in track frame, push structure is provided on threaded rod, second motor is provided in the front of threaded rod, manual rocker is provided in the left side of handrail, fixed tread is provided in the front of frame, movable plate is provided below frame, and pulley is provided below fixed tread and movable plate.

[0011] Preferably, the first motor is fixed in the frame, and the left and right ends of the first motor are fixedly connected with the gears, and the gears are rotatably connected with the fixed card.

[0012] Preferably, the track frame is fixed on the upper surface of the machine case, the front and rear ends of the threaded rod are rotatably connected with the track frame, and the front end of the threaded rod is fixedly connected with the output end of the second motor.

[0013] Preferably, the push structure includes a connecting card, a sliding groove, a second connecting rod, and a threaded block, the sliding groove is opened on the left and right sides of the connecting card, the front of the connecting card is fixedly connected with the rear end of the second connecting rod, the threaded block is fixedly connected with the front end of the connecting card, the threaded block moves forward and backward in the track frame, and the threaded block is screwedly connected with the threaded rod, the sliding groove is movably connected with the first connecting rod, and the first connecting rod moves up and down or rotates in the sliding groove.

[0014] Preferably, the movable plate includes a movable tread, a sliding rod, and a rack, two sliding rods are symmetrically fixed on the front edge of the movable tread, the sliding rod is slidably connected with the bottom of the frame, and the sliding rod slides forward and backward on the bottom of the frame, two racks are fixed on the upper surface of the sliding rod, and the racks are meshingly connected with the gears, a rear-view camera is arranged on the rear side of the movable tread, and the rear-view camera is fixed on the rear side of the movable tread.

[0015] Preferably, the fixed pedal is fixed on the lower side of the frame, and four pulleys are symmetrically fixed under the fixed pedal and the movable pedal.

[0016] Preferably, a touch screen is arranged on the right side of the armrest, the touch screen is fixed on the front side of the right side of the armrest, a system main control chip and a voice recognition module are arranged in the touch screen, a front-view camera is arranged on the front side of the touch screen, and the left side of the left side of the armrest is fixedly connected with a manual rocker.

[0017] Preferably, a heart rate and blood oxygen sensor is arranged in the cushion, and an infrared temperature sensor is arranged on the backrest and fixed on the front side of the backrest.

[0018] (Three) beneficial effects

[0019] Compared with the prior art, the multifunctional electric wheelchair has the following advantages

[0020] Beneficial effects:

[0021] 1. The multifunctional electric wheelchair drives the threaded rod to rotate through the second motor, drives the threaded block to move back and forth in the track frame, and then drives the second connecting rod and the connecting clamp to move back and forth, drives the first connecting rod to rotate while sliding up and down in the sliding groove, drives the backrest to rotate, freely adjusts the angle of the backrest, and improves the comfort of the user.

[0022] 2. The multifunctional electric wheelchair drives the gear to rotate on the rack through the first motor, drives the sliding rod to slide back and forth at the bottom of the frame, and then drives the movable pedal to slide back and forth, so that the movable pedal can be stored or unfolded, and the movable pedal can be used to load articles or for others to stand.

[0023] 3. The multifunctional electric wheelchair receives the rocker module and voice instructions and converts them into PWM signal outputs to drive the rotation of the brushless motor, and the duty ratio of the PWM signal affects the speed of the brushless motor. By adjusting the duty ratio of the PWM signal, the speed of the brushless motor can be accurately controlled.

[0024] 4. The multifunctional electric wheelchair has optimized the sensor design and signal processing of the heart rate and blood oxygen sensor module, and can provide high-sensitivity heart rate and blood oxygen measurement, even in a motion state, and can maintain a relatively stable measurement value.

[0025] 5. The multifunctional electric wheelchair can realize non-contact measurement of human body temperature through the infrared temperature sensor, avoiding the inconvenience of direct contact with the human body required by traditional thermometers, greatly improving the comfort and hygiene of measurement. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0027] Figure 1 is a three-dimensional structure schematic view of the present application;

[0028] Figure 2 is a three-dimensional structure sectional view of the present application;

[0029] Figure 3 is a three-dimensional structure schematic view of the movable plate of the present application;

[0030] Figure 4 is a three-dimensional structure schematic view of the pushing structure of the present application.

[0031] Legend:

[0032] 1, wheelchair main body; 101, frame; 102, seat cushion; 103, armrest; 104, backrest; 105, first connecting rod; 106, fixed clamp; 2, fixed pedal; 3, pulley; 4, first motor; 5, gear; 6, case; 7, wheel; 8, movable plate; 801, movable pedal; 802, sliding rod; 803, rack; 9, track frame; 10, threaded rod; 11, second motor; 12, pushing structure; 1201, connecting clamp; 1202, sliding groove; 1203, second connecting rod; 1204, threaded block; 13, manual rocker; 14, touch screen; 15, front-view camera; 16, infrared temperature sensor; 17, brushless motor; 18, heart rate and blood oxygen sensor; 19, rear-view camera. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0034] Specific embodiments are given below.

[0035] Please refer to Figure 1 , Figure 2 and Figure 4The utility model provides a kind of multifunctional electric wheelchair, including wheelchair main body 1, the wheelchair main body 1 includes frame 101, cushion 102, handrail 103, backrest 104, first connecting rod 105 and fixed card 106, the frame 101 upper fixed connection cushion 102, the rear side of the cushion 102 is rotatably connected with the lower end of backrest 104, the lower end of two handrails 103 is fixedly connected with the rear side of cushion 102, the upper end of first connecting rod 105 is fixedly connected with the lower side middle of backrest 104, two fixed cards 106 are fixed in frame 101 both sides, first motor 4 is provided in the middle of fixed card 106, gear 5 is provided in the left and right sides of first motor 4, machine box 6 is provided in the middle of frame 101, brushless motor 17 is provided in machine box 6, vehicle wheel 7 is provided in the both sides of machine box 6, track frame 9 is provided above machine box 6, threaded rod 10 is provided in track frame 9, push structure 12 is provided on threaded rod 10, second motor 11 is provided in the front of threaded rod 10, manual rocker 13 is provided in the left side of handrail 103, fixed tread 2 is provided in the front of frame 101, movable plate 8 is provided below frame 101, and pulley 3 is provided below fixed tread 2 and movable plate 8.

[0036] Preferably, the track frame 9 is fixed on the upper surface of the machine box 6, the front and rear ends of the threaded rod 10 are rotatably connected with the track frame 9, the front end of the threaded rod 10 is fixedly connected with the output end of the second motor 11, the push structure 12 comprises a connecting card 1201, a sliding groove 1202, a second connecting rod 1203 and a threaded block 1204, the sliding groove 1202 is formed on the left and right sides of the connecting card 1201, the front surface of the connecting card 1201 is fixedly connected with the rear end of the second connecting rod 1203, the threaded block 1204 is fixedly connected with the front end of the connecting card 1201, the threaded block 1204 moves forward and backward in the track frame 9, and the threaded block 1204 is threadedly connected with the threaded rod 10, the sliding groove 1202 is movably connected with the first connecting rod 105, and the first connecting rod 105 moves up and down or rotates in the sliding groove 1202.

[0037] Specifically, the second motor 11 drives the threaded rod 10 to rotate, the threaded rod 10 drives the threaded block 1204 to move forward and backward in the track frame 9, and then drives the second connecting rod 1203 and the connecting card 1201 to move forward and backward, the connecting card 1201 drives the first connecting rod 105 to rotate while sliding up and down in the sliding groove 1202, the first connecting rod 105 drives the backrest 104 to rotate, the angle of the backrest 104 is freely adjusted, and the comfort of the user is improved.

[0038] As Figure 1 , Figure 2 and Figure 3As shown, the first motor 4 is fixed in the frame 101, and the left and right ends of the first motor 4 are fixedly connected with the gear 5, the gear 5 is rotatably connected with the fixed clamp 106, the movable plate 8 comprises a movable pedal 801, a slide rod 802 and a rack 803, two slide rods 802 are symmetrically fixed on the front edge of the movable pedal 801, the slide rod 802 is slidably connected with the bottom of the frame 101, and the slide rod 802 slides forward and backward on the bottom of the frame 101, two racks 803 are fixed on the upper surface of the slide rod 802, and the rack 803 is meshingly connected with the gear 5, the rear side of the movable pedal 801 is provided with a rear-view camera 19, the rear-view camera 19 is fixed on the rear side of the movable pedal 801, the fixed pedal 2 is fixed on the lower side of the front of the frame 101, and four pulleys 3 are symmetrically fixed on the lower surfaces of the fixed pedal 2 and the movable pedal 801 respectively.

[0039] Specifically, the first motor 4 drives the gear 5 to rotate on the rack 803, drives the slide rod 802 to slide forward and backward on the bottom of the frame 101, and then drives the movable pedal 801 to slide forward and backward, so that the movable pedal 801 can be stored or unfolded, and the movable pedal 801 can be used to load articles or for others to stand.

[0040] The right side of the armrest 103 is provided with a touch screen 14, the touch screen 14 is fixed on the right side of the front of the armrest 103, the touch screen 14 is provided with a system main control chip and a voice recognition module, the front of the touch screen 14 is provided with a front-view camera 15, the left side of the left side of the armrest 103 is fixedly connected with a manual rocker 13, the manual rocker 13 is provided with a rocker module, the seat cushion 102 is provided with a heart rate and blood oxygen sensor 18, and the backrest 104 is provided with an infrared temperature sensor 16, and the infrared temperature sensor 16 is fixed on the front of the backrest 104.

[0041] Specifically, the system main control chip receives the rocker module and the voice instruction and analyzes and converts them into a PWM signal output to drive the rotation of the brushless motor 17, the duty ratio of the PWM signal affects the rotation speed of the brushless motor 17, and by adjusting the duty ratio of the PWM signal, the rotation speed of the brushless motor 17 can be accurately controlled, the heart rate and blood oxygen sensor module has been optimized in sensor design and signal processing, and can provide high-sensitivity heart rate and blood oxygen measurement, even in a motion state, a relatively stable measurement value can be maintained, and through the infrared temperature sensor 16, non-contact measurement of human body temperature can be realized, avoiding the inconvenience of direct contact with the human body required by the traditional thermometer, greatly improving the comfort and hygiene of measurement.

[0042] Working principle: in use, the second motor 11 is started, the second motor 11 drives the threaded rod 10 to rotate, the threaded rod 10 drives the threaded block 1204 to move back and forth in the track frame 9, in turn drives the second connecting rod 1203 and the connecting card 1201 to move back and forth, the connecting card 1201 drives the first connecting rod 105 to rotate while sliding up and down in the chute 1202, the first connecting rod 105 drives the backrest 104 to rotate, the angle of the backrest 104 is adjusted freely, the first motor 4 is started, the first motor 4 drives the gear 5 to rotate on the rack 803, drives the slide rod 802 to slide back and forth at the bottom of the frame 101, in turn drives the movable pedal 801 to slide back and forth, the movable pedal 801 can be stored or unfolded.

[0043] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A multifunctional electric wheelchair, comprising a wheelchair body (1), characterized in that: The wheelchair body (1) includes a frame (101), a seat cushion (102), armrests (103), a backrest (104), a first connecting rod (105), and fixing clips (106). The seat cushion (102) is fixedly connected to the top of the frame (101). The rear side of the seat cushion (102) is rotatably connected to the lower end of the backrest (104). The lower ends of the two armrests (103) are fixedly connected to the upper rear side of the seat cushion (102). The upper end of the first connecting rod (105) is fixedly connected to the middle of the lower side of the backrest (104). The two fixing clips (106) are fixed on both sides of the frame (101). A first motor (4) is provided in the middle of the fixing clip (106). The first motor (4) has teeth on both the left and right sides. The frame (101) has a wheel (5), a housing (6) in the middle, a brushless motor (17) inside the housing (6), wheels (7) on both sides of the housing (6), a track frame (9) above the housing (6), a threaded rod (10) inside the track frame (9), a push structure (12) on the threaded rod (10), a second motor (11) in front of the threaded rod (10), a manual crank (13) on the left side of the handrail (103), a fixed pedal (2) in front of the frame (101), a movable plate (8) below the frame (101), and pulleys (3) below the fixed pedal (2) and the movable plate (8).

2. The multifunctional electric wheelchair according to claim 1, characterized in that: The first motor (4) is fixed inside the frame (101), and the left and right ends of the first motor (4) are fixedly connected to the gear (5), and the gear (5) is rotatably connected to the fixing clip (106).

3. A multifunctional electric wheelchair according to claim 1, characterized in that: The track frame (9) is fixed on the top of the housing (6), the front and rear ends of the threaded rod (10) are rotatably connected to the track frame (9), and the front end of the threaded rod (10) is fixedly connected to the output end of the second motor (11).

4. A multifunctional electric wheelchair according to claim 1, characterized in that: The pushing structure (12) includes a connecting clip (1201), a sliding groove (1202), a second connecting rod (1203), and a threaded block (1204). The sliding groove (1202) is opened on the left and right sides of the connecting clip (1201). The front of the connecting clip (1201) is fixedly connected to the rear end of the second connecting rod (1203). The threaded block (1204) is fixedly connected to the lower front end of the connecting clip (1201). The threaded block (1204) moves back and forth in the track frame (9) and is threadedly connected to the threaded rod (10). The sliding groove (1202) is movably connected to the first connecting rod (105), and the first connecting rod (105) moves up and down or rotates in the sliding groove (1202).

5. A multifunctional electric wheelchair according to claim 1, characterized in that: The movable plate (8) includes a movable pedal (801), a slide rod (802), and a rack (803). The two slide rods (802) are symmetrically fixed on the front of the movable pedal (801). The slide rods (802) are slidably connected to the bottom of the frame (101) and slide back and forth on the bottom of the frame (101). The two racks (803) are fixed on the top of the slide rods (802) and mesh with the gear (5). A rearview camera (19) is provided on the rear side of the movable pedal (801). The rearview camera (19) is fixed on the rear side of the movable pedal (801).

6. A multifunctional electric wheelchair according to claim 5, characterized in that: The fixed pedal (2) is fixed to the lower front of the frame (101), and the four pulleys (3) are symmetrically fixed to the bottom of the fixed pedal (2) and the movable pedal (801).

7. A multifunctional electric wheelchair according to claim 1, characterized in that: A touch screen (14) is provided on the right side of the armrest (103). The touch screen (14) is fixed to the front right side of the armrest (103). The touch screen (14) contains a system main control chip and a voice recognition module. A front-view camera (15) is provided in front of the touch screen (14). The left side of the armrest (103) is fixedly connected to a manual rocker arm (13). The manual rocker arm (13) contains a rocker arm module.

8. A multifunctional electric wheelchair according to claim 1, characterized in that: The seat cushion (102) is equipped with a heart rate and blood oxygen sensor (18), and the backrest (104) is equipped with an infrared temperature sensor (16), which is fixed in front of the backrest (104).

Images