CN108852659A - A kind of table board structure of wheelchair - Google Patents

Abstract

The invention discloses a table board structure of a wheelchair, which includes a sliding sleeve, a telescopic rod, a table board, a sliding rod, and a bracket. The upper end of the bracket is provided with a sliding rod, and the lower end is provided with a table board storage groove. The bracket is fastened and installed on a seat by screws. The lower part of the backrest, the sliding sleeve is installed on the sliding rod, the two constitute a moving pair, the rear end of the telescopic rod is connected with the sliding sleeve to form a rotating pair, the front end of the telescopic rod is connected to the left end of the table, and the right end of the table is provided with a table handle and Board table, the wheelchair table board structure disclosed by the present invention is stable and reliable, easy to use, and greatly improves the use comfort of the wheelchair.

Description

Table structure of a wheelchair

technical field

The invention relates to a table structure of a wheelchair.

Background technique

At present, the aging of the global population is particularly prominent, and the development of special disabled groups has brought about the diversified needs of the elderly health industry and the industrial market for special groups. How to provide corresponding products and services for this special group has become a challenge for health industry practitioners and A topic of common concern to all sectors of society. With the improvement of residents' living standards, people have put forward higher requirements for product quality, performance and comfort. Coupled with the accelerated pace of urban life, children spend less and less time at home to take care of the elderly and patients. It is inconvenient for people to use manual wheelchairs, so they cannot be well taken care of. How to solve this problem has become a topic of increasing concern to the society.

The emergence of electric wheelchairs enables the elderly and disabled friends to no longer rely on the help of others. They can travel alone by operating electric wheelchairs, making their life and work easier and more convenient. Traditional electric wheelchairs are based on manual wheelchairs. Basically, superimposed power drive device, controller, battery and other components, transformed and upgraded, manual manipulation of the controller can drive the wheelchair to complete various actions such as forward, backward, and steering, but the electric wheelchair improved from the manual wheelchair Wheelchairs still have many deficiencies in terms of support structure strength, riding comfort, center of gravity configuration, humanized operation, etc., and the table structure is mostly fixed on the wheelchair, which is inconvenient to take and store. Therefore, it is a problem to be solved by the present invention to design a table structure with beautiful appearance, simple structure, stable and reliable, easy to use and humanized operation.

Contents of the invention

The object of the present invention is to overcome the above-mentioned disadvantages in the prior art, and provide a wheelchair table structure, which is stable and reliable in structure, easy to use, and greatly improves the comfort of the wheelchair.

The technical solution adopted by the present invention is: a table structure of a wheelchair, including a sliding sleeve, a telescoping rod, a table, a sliding rod, and a bracket, which is characterized in that: the upper end of the bracket is provided with a sliding rod, and the lower end is provided with a table storage groove. The bracket is fastened and installed on the lower part of the back of the seat back through screws, and the sliding sleeve is installed on the sliding rod. The two form a moving pair. The right end of the board is provided with a table board handle and a table board card stand.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the overall structure of the present invention after removing the shell.

Fig. 3 is a partial cross-sectional schematic diagram of the front wheel suspension structure of the present invention.

Fig. 4 is an overall schematic diagram of the rear frame structure of the present invention.

Fig. 5 is a partial cross-sectional schematic diagram of the rear frame structure of the present invention.

Fig. 6 is an overall schematic diagram of the front pedal structure of the present invention.

Fig. 7 is a partial cross-sectional structural schematic diagram of the front pedal of the present invention.

Fig. 8 is an overall schematic diagram of the seat support structure of the present invention.

Fig. 9 is an overall schematic view of the seat structure of the present invention.

Fig. 10 is a partial cross-sectional schematic diagram of the right armrest structure of the present invention.

Fig. 11 is an overall schematic view of the seat structure of the present invention.

Fig. 12 is a schematic diagram of a state during the unfolding process of the tabletop of the present invention.

Fig. 13 is a schematic structural view of the fully unfolded tabletop in the present invention.

Fig. 14 is a partial cross-sectional schematic diagram of the position of the driving rod in the present invention.

Fig. 15 is a partial cross-sectional schematic diagram of the position of the right gear lever in the present invention.

Fig. 16 is an overall schematic diagram of the chassis structure of the present invention.

Fig. 17 is a partial cross-sectional schematic diagram of the chassis structure of the present invention.

Fig. 18 shows seven kinds of expressions displayed on the LED display screen controlled by the "mood" button in the present invention.

Reference numerals: 1 seat structure, 2 armrest structure, 3 seat support structure, 4 front pedal structure, 5 front wheel suspension structure, 6 chassis structure, 7 rear wheel support structure, 8 table structure, 101 headrest, 102 Seat back, 103 seat, 104 backrest adjustment lever, 105LED display, 106 horn, 201 right armrest, 202 left armrest, 203 steering wheel, 204 console, 205 swing lever, 206 console knob, 207 right gear lever, 2071 Card, 208 left gear lever, 2081 chuck, 209 right armrest pole, 210 right armrest pole, 211 left fixed plate, 212 left armrest pole, 213 left armrest pole, 214 LED light, 215 driving pole, 216 emergency Button, 217 locking rotary rod, 218 lamp frame, 219 lamp tightening button, 301 right guide rail, 302 left guide rail, 303 rear strut, 304 turn button, 305 rear slide plate, 306 seat connecting plate, 307 right rotation Slider, 308 left-handed slider, 309 right electric push rod, 310 left electric push rod, 311 slider, 312 lead screw motor, 313 gyroscope, 314 motor fixing plate, 315 front skateboard, 316 front strut, 317 lead screw , 401 pedal connecting plate, 402 lifting knob, 403 lifting piece, 404 angle knob, 405 pedal bottom shell, 406 rotating plate, 4061 limit support, 4062 rotating rod, 407 pedal upper cover, 408 curved rod, 409 straight rod, 410 Massage wheel, 411 upper connecting rod, 412 push-pull rod, 413 lower connecting rod, 414 first optical axis, 415 second optical axis, 416 third optical axis, 417 rubber ring, 501 lithium battery pack, 502 main frame, 5021 Long slot, 503 right damping spring, 504 right upper link, 505 right front wheel bracket, 506 right front wheel, 507 right lower swing arm, 508 right drive shaft, 509 right upper swing arm, 510 right suspension electric push rod, 511 left Suspension electric push rod, 512 sub-frame, 513 differential, 514 connecting frame, 515 left upper swing arm, 516 left damping spring, 517 left lower swing arm, 518 turntable bearing, 519 left transmission disc, 520 left front wheel bracket, 521 Left front wheel, 522 left upper link, 523 motor frame pull arm, 524 motor frame, 525 shell, 526 drive motor, 527 left drive shaft, 601 left swing damping spring, 602 right swing damping spring, 603 left lever, 604 right lever , 605 left thread ejector rod, 606 right thread ejector rod, 607 balance bar, 608 swing sleeve, 609 swing shaft, 610 nut, 701 container cover, 702 container, 703 right rear wheel, 704 right wheel connector, 705 Right wheel worm, 706 rear frame, 707 left wheel worm, 708 left rear wheel, 709 left guide plate, 710 toothed belt, 711 rear wheel bolt, 712 turntable bearing, 713 left wheel connector, 714 left pulley, 715 left guide wheel , 716 right guide wheel, 717 right pulley, 718 rear wheel bolt, 719 right guide plate, 720 driving pulley, 801 sliding sleeve , 802 telescopic rod, 803 table, 8031 table handle, 8032 table card table, 804 slider, 805 bracket, 8051 table storage slot.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not as a limitation to the present invention.

As shown in Figure 1 and Figure 2, the electric wheelchair of this embodiment includes a seat structure 1, an armrest structure 2, a seat support structure 3, a front pedal structure 4, a front wheel suspension structure 5, a chassis structure 6, and a rear wheel support structure 7. The table structure 8, the shell 525 is installed on the periphery of the main frame 502, and its front end is provided with grooves for placing the legs. As shown in Figure 3, the front wheel suspension structure 5 includes a lithium battery pack 501, a main Vehicle frame 502, right damping spring 503, right upper link 504, right front wheel bracket 505, right front wheel 506, right lower swing arm 507, right transmission shaft 508, right upper swing arm 509, right suspension electric push rod 510, left suspension electric Push rod 511, subframe 512, differential 513, connecting frame 514, left upper swing arm 515, left damping spring 516, left lower swing arm 517, turntable bearing 518, left transmission disc 519, left front wheel bracket 520, left front Wheel 521, upper left connecting rod 522, motor frame pull arm 523, motor frame 524, shell 525, drive motor 526, left transmission shaft 527, as shown in Figure 3, connecting frame 514 is provided with four supporting legs, and its four The supporting legs are fixed on the upper side of the sub-frame 512 by screws, and an arched crossbeam is arranged between the left two supporting legs and the right two supporting legs. One end of the left lower swing arm 517 and the lower end of the left front wheel bracket 520 form a rotating pair, one end of the left upper link 522 and the left end of the connecting frame 514 form a rotating pair, and the other end and the left front wheel bracket 520 The upper end constitutes a rotating pair, then the subframe 512, connecting frame 514, left lower swing arm 517, left upper link 522 and left front wheel bracket 520 constitute a parallelogram mechanism, and a The turntable bearing 518, the left transmission plate 519 and the left front wheel 521 are fastened and connected by screws, the other end of the right lower swing arm 507 and the lower end of the right front wheel bracket 505 form a rotating pair, and one end of the right upper link 504 forms a rotating pair with the right end of the connecting frame 514. pair, the other end and the right front wheel bracket 505 upper end constitute a rotating pair, then the subframe 512, connecting frame 514, right lower swing arm 507, right upper link 504 and right front wheel bracket 505 constitute a parallelogram mechanism, and the right front wheel bracket 505 A turntable bearing is installed between the right transmission disc and the right front wheel 506, and the right transmission disc and the right front wheel 506 are fastened and connected by screws. It forms a revolving pair with two left damping springs 516, the lower ends of the two left damping springs 516 form a revolving pair with the upper side of the left lower swing arm 517, the rear end of the left hanging electric push rod 511 forms a spherical pair with the right end of the upper beam of the connecting frame 514, The front end and the upper left swing arm 515 form a spherical pair, the lower end of the upper right swing arm 509 and the right end of the connecting frame 514 form a revolving pair, the upper end of the upper right swing arm 509 forms a revolving pair with two right damping springs 503, and the lower ends of the two right damping springs 503 are connected with each other. The upper side of the right lower swing arm 507 constitutes a revolving pair, and the right suspension electric push rod 510 The rear end and the left end of the upper beam of the connecting frame 514 form a spherical pair, and the front end and the upper right swing arm 509 form a spherical pair.

As shown in Figure 17, the rear end of the main frame 502 is provided with a long through hole, and the two side walls of the through hole are respectively provided with a bearing installation hole, and the axis lines of the two bearing installation holes coincide. The lower side of the main frame 502 is provided with two brackets, the lower ends of the two brackets are fastened to the sub-frame 512 by screws, the front end of the motor frame 524 is connected to the rear end of the sub-frame 512 by screws, and the motor frame 524 A round hole is provided at the upper ends of the left and right sides, the upper end of the motor frame pull arm 523 is tightly connected with the main frame 502, the lower end is tightly connected with the motor frame 524, and the drive motor 526 is fastened on the motor frame 524 upper side.

As shown in Figure 3, the differential 513 is installed inside the subframe 512, its input shaft is connected with the output shaft of the driving motor 526 through a coupling, and the left output shaft of the differential 513 is through a Hooke hinge The structure is connected with one end of the left transmission shaft 527, the other end of the left transmission shaft 527 is connected with the left transmission disc 519 through a Hooke hinge structure, and the right output shaft of the differential 513 is connected with one end of the right transmission shaft 508 through a Hooke hinge structure, The other end of the right transmission shaft 508 is connected with the right transmission disc through a Hooke hinge structure, and the lithium battery pack 501 is installed in the main frame 502 inside.

As shown in Figure 3 and Figure 14, the lithium battery pack 501 provides power for the wheelchair, the drive motor 526 drives the two front wheels (506, 521) to rotate through the differential 513, and the drive rod 215 pushes toward the "forward" sign , the two front wheels (506, 521) rotate forward, and the wheelchair travels forward, and when the drive rod 215 is pushed toward the "reverse" sign, the two front wheels (506, 521) rotate backward, and the wheelchair travels backward; Two front wheels (506, 521) adopt independent suspension structure to be connected with main frame 502 and subframe 512, therefore, when a certain front wheel drives over pit or bump, this wheel can jump and does not affect The driving of the other front wheel has an impact, so that the occupant of the wheelchair can obtain better comfort; if the right suspension electric push rod 510 does not work, when the wheelchair speed is fast and the steering wheel 203 rotates to the left, the wheelchair will turn to the left. Turning, under the action of centrifugal force, the center of gravity of the occupants shifts to the right, and the two right damping springs 503 are compressed. When the support force of the right front wheel 506 is insufficient, the wheelchair will easily overturn to the right, causing the occupants to be injured. Therefore, when the steering wheel 203 When turning to the left, the left hanging electric push rod 511 does not act, and the right hanging electric push rod 510 will stretch out a certain length according to the wheelchair speed and the angle of rotation of the steering wheel 203, so that the right upper swing arm 509 is rotated downward, thereby making the right front The wheel 506 can provide more powerful support and improve the safety when the wheelchair turns left; if the left hanging electric push rod 511 does not work, when the wheelchair speed is fast and the steering wheel 203 turns to the right, the wheelchair turns to the right. Under the action, the center of gravity of the occupants shifts to the left, and the two left damping springs 516 are compressed. When the support force of the left front wheel 521 is insufficient, it is easy to cause the wheelchair to overturn to the left, causing the occupants to be injured. Therefore, when the steering wheel 203 turns right , the right hanging electric push rod 510 does not move, and the left hanging electric push rod 511 will extend a certain length according to the wheelchair speed and the angle of rotation of the steering wheel 203, so that the left upper swing arm 515 turns downward, so that the left front wheel 521 can provide more Strong support improves the safety when the wheelchair turns right.

The rear wheel support structure 7 includes a cargo box cover 701, a cargo box 702, a right rear wheel 703, a right wheel connector 704, a right wheel worm 705, a rear frame 706, a left wheel worm 707, a left rear wheel 708, a left Guide plate 709, toothed belt 710, rear wheel bolt 711, turntable bearing 712, left wheel connector 713, left pulley 714, left guide pulley 715, right guide pulley 716, right pulley 717, rear pulley bolt 718, right guide plate 719 , Drive pulley 720, as shown in Figure 4 and Figure 5, the upper end of the rear frame 706 is provided with a longitudinal beam, the front end of the longitudinal beam is provided with a spline hole and a horizontal through square hole, the rear end of the longitudinal beam There are two separate legs, each leg lower end is provided with a worm hole and a transverse empty groove, one end of the left wheel connector 713 is a disc structure, and a disc structure and the left rear wheel 708 are provided with a The turntable bearing 712 makes the former two constitute a revolving pair, and the other end of the left wheel connector 713 is an incomplete worm gear structure with left-handed gear teeth. A rear wheel bolt 711 is connected to the rear frame 706 to form a revolving pair. The tooth rotation of the left wheel worm 707 is left-handed. It is installed in the worm hole at the lower end of the left leg of the frame 706 through a bearing, and is connected with the left wheel connector. 713 constitutes the meshing relationship of the worm and worm. The rear end of the left wheel and worm 707 is tightly connected with the left pulley 714. One end of the right wheel connector 704 is a disc structure, and a turntable bearing is arranged between the disc structure and the right rear wheel 703, so that the front The two constitute a revolving pair. The other end of the right wheel connector 704 is an incomplete worm gear structure with right-handed gear teeth. The right wheel connector 704 is installed in the transverse hollow groove at the lower end of the right leg of the rear frame 706, and passes through a rear The wheel bolt 718 is connected with the rear frame 706 to form a revolving pair. The tooth rotation direction of the right wheel worm 705 is right-handed. 704 constitutes the meshing relationship of the worm gear and worm. The rear end of the right wheel worm 705 is tightly connected with the right pulley 717, and the middle position of the rear end of the rear frame 706 is provided with a pulley drive motor, and its output shaft is tightly connected with the drive pulley 720. The guide wheel 715 is installed on the lower side of the left leg of the rear vehicle frame 706 near the middle position, and the right guide wheel 716 is installed on the lower side of the right side leg of the rear vehicle frame 706 near the middle position. The toothed belt 710 is an annular structure, and the inside The belt teeth on the side form an engagement relationship with the left pulley 714, the right pulley 717 and the driving pulley 720 respectively, and the left guide pulley 715 and the right guide pulley 716 contact with the outer surface of the toothed belt 710 to realize the guiding and tensioning of the toothed belt 710. Tight, the left guide plate 709 is installed inside the left leg, and the right guide plate 719 is installed inside the right leg, both of which realize the guiding effect on the toothed belt 710. The cargo box 702 is installed on the rear frame 706 side, and its upper end is provided with a cargo box cover 701.

As shown in Figure 5, the incomplete worm gear tooth shape rotation direction and the left wheel worm on the left wheel connector 713 are both left-handed, and the incomplete worm gear tooth shape rotation direction and the wheeled worm on the right wheel connector 704 are both right-handed. Therefore, when the drive pulley 720 rotates, the toothed belt 710 will drive the left rear wheel 708 and the right rear wheel 703 to turn left or right simultaneously; when the steering wheel 203 turns left, the pulley drive motor rotates, driving The pulley 720 rotates clockwise, and the toothed belt 710 drives the left rear wheel 708 and the right rear wheel 703 to rotate to the right at the same time, and the wheelchair turns to the left. When the steering wheel 203 rotates to the right, the pulley drive motor rotates , the driving pulley 720 rotates counterclockwise, the toothed belt 710 drives the left rear wheel 708 and the right rear wheel 703 to rotate to the left simultaneously, and then the wheelchair turns to the right.

The front pedal structure 4 includes a pedal connecting plate 401, a lifting knob 402, a lifting member 403, an angle knob 404, a pedal bottom shell 405, a rotating plate 406, a pedal upper cover 407, a curved rod 408, a straight rod 409, and a massage wheel. 410, upper connecting rod 411, push-pull rod 412, lower connecting rod 413, first optical axis 414, second optical axis 415, third optical axis 416, rubber ring 417, as shown in Figure 2 and Figure 6, the described The rear side of the pedal connecting plate 401 is tightly connected with the main frame 502 and the sub-frame 512, and its front side is provided with two long holes with the same size. In the round hole, a lifter 403 is arranged between the two elongated holes. The center of the lifter 403 is vertically provided with a threaded hole. The threaded hole and the lift knob 402 form a thread pair. Two coaxial threaded holes, the two coaxial round holes at the top of the pedal bottom case 405 are respectively connected with the two horizontal threaded holes of the lifter 403 by a screw, and the top of the pedal bottom case 405 is provided with two threaded holes, respectively connected with a Angle knob 404 constitutes a threaded pair.

As shown in Figures 6 and 7, the first optical axis 414, the second optical axis 415, and the third optical axis 416 are all installed in the pedal bottom case 405, and eight optical axes are installed coaxially on each optical axis. A massage wheel 410, four curved rods 408 upper ends all form a rotating pair with the first optical axis 414, and its lower ends all form a rotating pair with the inner bottom surface of the pedal bottom shell 405, and four curved rods 408 upper ends all connect with the second optical axis 415 constitutes a revolving pair, and its lower ends form a revolving pair with the inner bottom surface of the pedal bottom case 405. In addition, the upper ends of four curved rods 408 form a revolving pair with the third optical axis 416, and their lower ends form a revolving pair with the inner bottom surface of the pedal bottom case 405. Vice, four straight rods 409 are arranged between the first optical axis 414 and the second optical axis 415, and the four straight rods 409 form a rotating pair with the first optical axis 414 and the second optical axis 415, and the second optical axis 415 and the third optical axis 416 are additionally provided with four straight rods 409, and the four straight rods 409 all form a rotation pair with the second optical axis 415 and the third optical axis 416, and each optical axis (414, 415, 416) An elastic rubber ring 417 is arranged between the middle position and the inner bottom surface of the pedal bottom case 405, and the rotating plate 406 is installed on the front end of the pedal bottom case 405, both of which form a rotating pair, and the lower side of the rotating plate 406 is provided with a limiter. Position support 4061 and two rotating rods 4062, the front ends of the two push-pull rods 412 and the bottom end of a rotating rod 4062 respectively form a rotating pair, the lower ends of the two lower connecting rods 413 and the inner bottom surface of the pedal bottom case 405 form a rotating pair, and the two upper The upper ends of the connecting rods 411 form a revolving pair with the first optical axis 414, and the rear ends of each push-pull rod 412 and the corresponding upper ends of the lower connecting rods 413 and lower ends of the upper connecting rods 411 form a coaxial revolving pair. The cover 407 and the pedal bottom case 405 are fastened and connected by screws. The upper side of the pedal upper cover 407 is provided with anti-skid patterns, and eight rectangular empty slots are provided above the massage wheels for the massage wheels to protrude upward from the pedal bottom case 405. .

As shown in FIG. 6 , rotating the lifting knob 402 can raise or lower the pedal bottom case 405 , and rotating the two angle knobs 404 can adjust the elevation angle of the pedal bottom case 405 .

As shown in Figure 7, when the rotating plate 406 is pulled downward, the rotating rod 4062 pushes the push-pull rod 412 to move backward, and the push-pull rod 412 will push the lower connecting rod 413 and the upper connecting rod 411 to rotate, thereby making the first optical axis 414 rotates upward, and the upward rotation of the first optical axis 414 will cause the second optical axis 415 and the third optical axis 416 to rotate upward simultaneously through the straight rod 409. When the first optical axis 414 rotates upward to the highest point, continue to pull downward Move the rotating plate 406, and then the first optical axis 414 will rotate downward. After it rotates downward by 3°, the bottom end of the limit support 4061 will contact the outer surface of the front end of the pedal bottom case 405, causing the rotating plate 406 to fail to move forward. Continue to pull down, at this time, three optical axes (414, 415, 416) lift all massage wheels 410, and then the feet can be massaged; Under the action of contraction tension, the three optical axes (414, 415, 416) rotate downwards, and each massage wheel 410 falls back to the inside of the bottom shell 405 of the pedal.

The seat support structure 3 includes a right guide rail 301, a left guide rail 302, a rear strut 303, a rotary knob 304, a rear slide plate 305, a seat connecting plate 306, a right-handed slider 307, a left-handed slider 308, a right electric Push rod 309, left electric push rod 310, slide block 311, leading screw motor 312, gyroscope 313, motor fixed plate 314, front slide plate 315, front strut 316, leading screw 317, as shown in Figure 8, described Left guide rail 302 and right guide rail 301 are installed on main vehicle frame 502 upper end surface, all are provided with three slide blocks 311 on each guide rail, front slide plate 315 bottom sides are respectively fastened with four slide blocks 311 near the front side, and rear slide plate 305 is tightly connected with the two sliders 311 near the rear side, the motor fixing plate 314 is tightly connected with the main frame 502, the lead screw motor 312 is fixedly installed on the upper side of the motor fixing plate, and the middle position of the lower side of the motor fixing plate is provided with Gyroscope 313, right-handed slider 307 is fixedly installed in the upper middle position of front slide plate 315, and left-handed slider 308 is fixedly installed in the upper middle position of rear skateboard 305. Block 307 is matched and installed to form a thread pair, and the second half is a left-handed thread, which is matched with a left-handed slide block 308 to form a thread pair. The left front end of the front slide plate 315 forms a spherical pair, and its upper end forms a spherical pair with the front left end of the seat connecting plate 306. The right end of the front side constitutes a spherical pair, the lower end of the front strut 316 and the rear end of the front slide 315 constitute a revolving pair, the lower end of the rear strut 303 and the rear slide 305 constitute a revolving pair, the upper end of the front strut 316, the upper end of the rear strut 303 and the rotary knob 304 At the rear end, the three form a coaxial rotating pair, the rear end of the seat connecting plate 306 and the front end of the rotary knob 304 form a rotating pair, and the seat connecting plate 306 is provided with four round holes for fastening connection with the connecting seat 103 .

As shown in Figure 8, when the lead screw motor 312 rotates counterclockwise, under the drive of the lead screw 317, the front slide plate 315 and the rear slide plate 305 move closer to each other, while the left electric push rod 310 and the right electric push rod 309 stretch The same length can make the seat connecting plate 306 rise vertically, that is, the rising movement of the seat 103 can be realized, otherwise, the descending movement of the seat 103 can be realized; Extend or shorten the same length as the right electric push rod 309 at the same time, which can realize the pitching action of the seat connecting plate 306, that is, realize the pitch adjustment action of the seat 103; 1. When the right electric push rod 309 is shortened, the seat connecting plate 306 can be tilted to the right; otherwise, when the left electric push rod 310 is shortened and the right electric push rod 309 is extended, the seat connecting plate 306 can be tilted left.

The chassis structure 6 includes a left pendulum damping spring 601, a right pendulum damping spring 602, a left lever 603, a right lever 604, a left threaded ejector rod 605, a right threaded ejector rod 606, a balance bar 607, a swing sleeve 608, a pendulum Rotating shaft 609 and nut 610, as shown in Figure 16 and Figure 17, said swing sleeve 608 is a hollow cylinder, and its outer wall is horizontally provided with two coaxial short shafts, and the two short shafts are installed on the main shaft through bearings respectively. In the two bearing holes of the side wall of the elongated through hole at the rear end of the vehicle frame 502, the swing sleeve 608 and the main frame 502 form a rotating pair, the swing shaft 609 is installed inside the swing sleeve 608 through the bearing, and the front end of the swing shaft 609 It is fixedly connected with the middle position of the balance bar 607, and the rear end of the swing shaft 609 is provided with a spline and a threaded shaft. The nut 610 in the hole locks the swing shaft 609 and the rear frame 706. The middle position of the left lever 603 and the round hole on the left side upper end of the motor frame 524 constitute a revolving pair, and the upper end of the left swing damping spring 601 and the main frame 502 constitutes a revolving pair, the lower end and the front end of the left lever 603 form a revolving pair, the upper end of the left threaded ejector rod 605 and the left end of the balance bar 607 form a spherical pair, the lower end and the rear end of the left lever 603 form a spherical pair, the middle position of the right lever 604 and the motor frame 524 The circular hole at the upper end of the right side constitutes a revolving pair, the upper end of the right pendulum damping spring 602 forms a revolving pair with the main frame 502, the lower end forms a revolving pair with the front end of the right lever 604, the upper end of the right threaded push rod 606 forms a spherical pair with the right end of the balance bar 607, The lower end and the right lever 604 rear end form a spherical pair.

As shown in Figure 16 and Figure 17, in the initial state, the two front wheels (506, 521) and the two rear wheels (703, 708) are on the same plane. In this state, the left swing damping spring 601 and the right swing damping spring 602 have the same amount of compression; when the left rear wheel 708 passes over a raised obstacle or the right rear wheel 703 passes over a pit obstacle, the rear frame 706 rotates clockwise relative to the main frame 502, and the balance bar 607 rotates clockwise. In this state, the left threaded ejector rod 605 moves upwards, the right threaded ejector rod 606 moves downwards, the right lever 604 rotates, and the right pendulum damping spring 602 is further compressed to increase the spring force, preventing the further rotation trend of the rear frame 706. After two rear wheels (703,708) passed obstacles, rear vehicle frame 706 was returned to initial state in time; 706 rotates counterclockwise relative to the main frame 502, and the balance bar 607 rotates counterclockwise. In this state, the left threaded push rod 605 moves downward, the right threaded push rod 606 moves upward, the left lever 603 rotates, and the left swing damping spring 601 moves further. Compression increases the spring force, stops the further rotation tendency of the rear vehicle frame 706, and after the two rear wheels (703, 708) pass the obstacle, the rear vehicle frame 706 is returned to the initial state in time; 703, 708) when driving over a raised obstacle or a pit obstacle at the same time, the swing sleeve 608 rotates so that the balance bar 607 drives the left threaded push rod 605 and the right threaded push rod 606 to move upwards or downwards simultaneously. The pendulum damping spring 601 and the right pendulum damping spring 602 play the role of buffering and shock absorption to ensure the comfort of the wheelchair occupant.

The armrest structure 2 includes right armrest 201, left armrest 202, steering wheel 203, console 204, swing lever 205, console knob 206, right gear lever 207, left gear lever 208, right armrest pole 209, right armrest Support rod 210, left fixed plate 211, left armrest support rod 212, left armrest support rod 213, LED light 214, driving rod 215, emergency button 216, locking rotary rod 217, lamp holder 218, lamp tightening knob 219, as shown in Figure 9 and Figure 14, the rear end of the left armrest 202 and the left side of the seat back 102 form a rotating pair, and the upper side of the front end of the left armrest 202 is provided with a drive rod 215, which can move forward and Pull back, the front side is provided with a "forward" text mark, the rear side is provided with a "reverse" text mark, an LED light 214 is provided on the left side of the left armrest 202, and the left side fixing plate 211 is fastened and installed on the bottom of the seat 103 At the left end of the side, two left handrail poles (212, 213) are arranged between the left side fixed plate 211 and the left handrail 202, then the left side fixed plate 211, two left handrail poles (212, 213) and the left handrail 202 Constitute a parallelogram structure, the front end of the left handrail 202 is provided with a left gear lever 208, the left gear lever 208 can slide and rotate inside the front end of the left armrest 202, and its front end is provided with a circular chuck 2081.

As shown in Fig. 9, Fig. 10 and Fig. 15, the rear end of the right armrest 201 and the right side of the seat back 102 form a rotating pair, the upper side of the rear end of the right armrest 201 is provided with an emergency button 216, and the right side fixed plate (attached Not shown in the figure, its structure is the same as that of the left fixed plate 211) is fastened and installed on the right end of the bottom side of the seat 103, and two right armrest poles (209, 210) are arranged between the right fixed plate and the left armrest 201, Then the fixed plate on the right side, two right handrail poles (209,210) and the right handrail 201 form a parallelogram structure, the right handrail 201 front end is provided with a right gear lever 207, and the right gear lever 207 can slide and Rotate, its front end is provided with chuck 2071, swing rod 205 rear end and right handrail 201 right side constitute rotating pair, and can be locked by locking rotary rod 217, swing rod 205 front end is provided with console 204, console 204 It can slide on the swing rod 205, and can be locked by the console knob 206. The upper side of the console 204 is equipped with "auto", "raise", "left tilt", "right tilt", "reset", "ventilation", "lower" and "heating". There are altogether 14 buttons for "massage", "mode", "light", "mood", "mute" and "volume". The front end of the console 204 is provided with a steering wheel 203.

As shown in Figure 9, the rotation of the seat back 102 and the seat 103 is an over-constrained motion, that is, the lower end of the seat back 102 and the seat 103 form a rotating pair, the left fixed plate 211, the two left armrest poles (212, 213) and left armrest 202 form a parallelogram structure, and the right side fixed plate, two right armrest struts (209, 210) and right armrest 201 form a parallelogram structure, such structure can make seat back 102 and seat The connection and relative movement between the chairs 103 are more reliable and durable.

As shown in Figure 10, after the locking rotary rod 217 is loosened, the swing rod 205 can swing in the vertical plane, and the swing rod 205 can be locked by tightening the locking rotary rod 217. , the position of the adjustable console 204 on the swing rod 205 can be adjusted to a suitable position by locking the rotary rod 217 and the console knob 206 according to the size and arm length of the wheelchair occupants; After the driving lever 215 of the steering wheel is pushed to the "advance" sign, when the steering wheel 203 turns counterclockwise, the wheelchair turns to the left and travels. At this time, the LED display 105 will display a left arrow to prompt the vehicles and personnel behind. When the steering wheel 203 turns clockwise , the wheelchair turns to the right and the LED display screen 105 will display a right arrow; after the driving rod 215 is pushed to the "reverse" sign, the horn 106 will play the sound of "please pay attention to reversing" to remind the rear vehicles and personnel to pay attention to safety; After the "automatic" button makes the gyroscope 313 detect the tilting state of the wheelchair, the information is fed back to the control system, and the control system sends a message to make the lead screw motor 312, the left electric push rod 310 and the right electric push rod 309 act simultaneously, and the seat 103 is adjusted to a horizontal position, and the seat 103 is always kept horizontal during the dynamic driving process to ensure the comfort of the ride; the "up" button controls the height of the seat 103 to increase; the "down" button controls the height of the seat 103 to decrease The "ventilation" button controls the seat ventilation function of the seat 103 and the seat back 102; the "heating" button controls the seat heating function of the seat 103 and the seat back 102; the "massage" button controls the seat 103 and the seat The seat massage function of the backrest 102; the "mode" button is used to select the mode of the seat massage; the "light" button controls the opening and closing of the LED light 214; the "mood" button is used to select the expression displayed on the LED display 105, It is used for the rider to show his mood at that time, when pressing the "mood" button to select the expression, the horn 106 will sound to prompt which expression is selected; the "mute" button mutes the horn 106, and the "volume" button is used to Adjust the volume of the horn 106; the emergency button 216 is arranged at the rear end of the right armrest 201. This position makes the emergency button 216 difficult to accidentally touch in normal use. After pressing the emergency button 216, the wheelchair will enter the static state from the current state of motion , the loudspeaker 106 will play the sound of asking for help, and at the same time, the word "HELP" will be displayed on the LED display 105 and flash to attract nearby people to help and rescue the wheelchair occupant; the "reset" button restores all settings of the wheelchair to the initial settings.

As shown in Figure 14, when the drive rod 215 is pushed toward the "forward" mark, the two front wheels (506, 521) rotate forward, the wheelchair moves forward, and when the drive rod 215 is pushed toward the "reverse" mark, the two front wheels (506, 521) rotate forward. Two front wheels (506, 521) rotate backwards, and the wheelchair travels backwards, and the angle at which the driving rod 215 is pushed forward or backward controls the speed of the wheelchair's forward or backward movement.

The table plate mechanism 8 includes a sliding sleeve 801, a telescopic rod 802, a table plate 803, a slide bar 804, and a support 805. There is a table storage slot 8051, the bracket 805 is fastened and installed on the lower part of the back of the seat back 102 by screws, the sliding sleeve 801 is installed on the sliding rod 804, the two constitute a moving pair, the rear end of the telescopic rod 802 is connected with the sliding sleeve 801, Constitute a rotating pair, the front end of the telescopic rod 802 is connected with the left end of the table 803, and the right end of the table 803 is provided with a table handle 8031 and a table card platform 8032.

As shown in Figure 14, extend the left gear lever 208 from the left handle 202, as shown in Figure 15, extend the right gear lever 207 from the inside of the right handle 201, as shown in Figure 11, the table board 803 is stored in the table In the board receiving groove 8051, when the table board 803 needs to be unfolded, as shown in Figure 12, pull the table board handle 8031 outward, after the table board 803 is pulled out from the table board receiving groove 8051, turn the telescopic rod 802 upwards, when After the telescopic rod 802 turns over the seat back 102, pull the telescopic rod 802 to the longest position, and turn the table board 803 around the telescopic rod 802 by 180°, then continue to rotate the telescopic rod 802 so that one end of the table board 803 rests on the left gear lever 208, the other end of the table card platform 8032 rides on the right gear lever 207, and makes the chuck 2071 block the table card platform 8032, so that the table plate 803 can not be separated from the axial direction of the right gear lever 207. At this time, the table plate 803 is fully unfolded; the storage process of the table board is in the opposite order to that of the unfolding process, and will not be repeated here.

The seat structure 1 includes a headrest 101, a seat back 102, a seat 103, a backrest adjustment lever 104, an LED display 105, and a horn 106. As shown in FIG. 9, the lower end of the seat back 102 is connected to the The seat 103 constitutes a rotating pair, and the angle between the seat back 102 and the seat 103 is adjusted by the backrest adjustment rod 104. Integrated massage function.

As shown in Figure 11, Figure 12 and Figure 18, the upper part of the back of the seat back 102 is provided with an LED display 105 and a loudspeaker 106, and the LED display 105 can display "excited", "happy", "satisfied" and "disappointed". "Sadness", "anger" and "sympathy" seven emotional expressions, and can display "left arrow", "right arrow" and "keep the distance between cars" tips.

As shown in Figure 10, after the drive rod 215 is pushed to the "forward" sign, when the steering wheel 203 is turned counterclockwise, the wheelchair turns to the left, and at this time, the LED display 105 will display a left arrow to remind the vehicles behind and Personnel, when the steering wheel 203 turns clockwise, the wheelchair turns to the right and travels. At this time, the LED display screen 105 will display a right arrow; after the drive lever 215 is pushed to the "reverse" sign, the horn 106 will play the sound of "Please pay attention to reversing" to Remind the rear vehicles and personnel to pay attention to safety; the "mood" button is used to select the expression displayed on the LED display 105, and is used for the occupants to display their own mood at that time. When the "mood" button is pressed to select the expression, the horn 106 will make a sound Prompt what expression is selected; the "mute" button mutes the horn 106, and the "volume" button is used to adjust the volume of the horn 106; the emergency button 216 is arranged at the rear end of the right armrest 201, and this position makes the emergency button 216 in the normal state. It is not easy to accidentally touch it in the use state. After pressing the emergency button 216, the wheelchair will enter the static state from the current motion state, and the horn 106 will play the sound of asking for help. Attract nearby people to help and rescue wheelchair occupants.

The above content described in this specification is only an illustration of the present invention. Those skilled in the technical field to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, as long as they do not deviate from the content of the description of the present invention or exceed the scope defined in the claims , should belong to the protection scope of the present invention.

Claims (1)

1. a kind of table board structure of wheelchair, including sliding sleeve (801), telescopic rod (802), desktop (803), slide bar (804), bracket (805), it is characterised in that：Bracket (805) upper end is equipped with slide bar (804), and lower end is equipped with desktop accommodating groove (8051), bracket (805) backrest (102) back lower part is fastened on by screw, sliding sleeve (801) is installed on slide bar (804), the two Prismatic pair is constituted, telescopic rod (802) rear end is connect with sliding sleeve (801), constitutes revolute pair, telescopic rod (802) front end and desktop (803) left end connects, and desktop (803) right end is equipped with desktop handle (8031) and desktop chuck (8032).