An electric wheelchair with intelligent kinetic energy recovery

Abstract

The present invention relates to the technical field of travel assistance equipment, and in particular to an electric wheelchair with intelligent kinetic energy recovery, which is used to solve the problem that existing electric wheelchairs lose kinetic energy due to the need for braking when going downhill at a high speed. The electric wheelchair comprises a support mechanism, a driving mechanism and a recovery mechanism connected to the driving mechanism are arranged at the bottom of the support mechanism; the recovery mechanism comprises a generator, an input shaft is connected to the rotor of the generator, and the driving mechanism comprises a rotating shaft, both ends of the rotating shaft are connected to moving wheels; a slope sensor is arranged on the support mechanism, and when the slope sensor detects that the support mechanism goes downhill, the rotating shaft is transmitted to the input shaft, so that the input shaft rotates to drive the generator; the wheelchair realizes the accurate capture and efficient conversion of downhill kinetic energy through the linkage mechanism between the recovery mechanism and the driving mechanism, combined with the slope sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of travel assistance equipment, and in particular to an electric wheelchair capable of intelligently recovering kinetic energy. Background Art

[0002] As an important tool to assist people with limited mobility, continuous optimization of the design and functions of electric wheelchairs is particularly important.

[0003] Traditional electric wheelchairs mostly focus on improving the user's mobility and comfort, but there is still much room for improvement in terms of energy efficiency and environmental protection. Especially in the scenario of driving on a slope, electric wheelchairs often accelerate due to gravity when going downhill, which not only increases the difficulty of user operation, but also may bring safety hazards. At the same time, the kinetic energy generated during the downhill process is often directly wasted and not effectively utilized. Summary of the invention

[0004] The present invention provides an electric wheelchair capable of intelligently recovering kinetic energy, so as to solve the problem that the existing electric wheelchair loses kinetic energy due to the need for braking when going downhill at a high speed.

[0005] In order to alleviate the above technical problems, the technical solution provided by the present invention is:

[0006] An electric wheelchair with intelligent kinetic energy recovery comprises a support mechanism, a driving mechanism and a recovery mechanism connected to the driving mechanism are arranged at the bottom of the support mechanism;

[0007] The recovery mechanism includes a generator, the rotor of which is connected to an input shaft, and the driving mechanism includes a rotating shaft, both ends of which are connected to moving wheels;

[0008] The support mechanism is provided with a slope sensor. When the slope sensor detects that the support mechanism is going downhill, the rotating shaft is transmitted to the input shaft, so that the input shaft rotates to drive the generator.

[0009] Furthermore, the driving mechanism also includes a mounting block, a side portion of which is slidably connected to a driving motor, an output end of the driving motor and the rotating shaft are both connected to gears, and the two gears are meshed with each other.

[0010] Furthermore, the support mechanism comprises a seat plate, and a backrest is hinged on the seat plate through an electric rotating rod. When the slope sensor detects that the support mechanism goes downhill, the backrest leans back.

[0011] Furthermore, the recovery mechanism also includes a driving wheel connected to the rotating shaft, the bottom of the seat plate is rotatably connected to a driven wheel, a belt is connected between the driving wheel and the driven wheel, and the driven wheel can be transmitted to the input shaft.

[0012] Furthermore, it also includes a trigger mechanism, which includes a sliding rod coaxially sliding in the rotating shaft, a first wedge block is connected to the side wall of the sliding rod, and a second wedge block is radially slidably connected to the side wall of the rotating shaft, the inclined surface of the first wedge block is in contact with the inclined surface of the second wedge block, and when the backrest is tilted back, the sliding rod slides in the direction of the driving wheel, so that the first wedge block pushes the second wedge block to abut against the driving wheel, so that the driving wheel and the rotating shaft rotate synchronously.

[0013] Furthermore, the trigger mechanism further comprises a connecting rod, the two ends of the connecting rod are respectively connected with a first circular ring and a second circular ring, the electric rotating rod is coaxially connected with a circular rod, and the end of the circular rod is connected with a cam;

[0014] The rotating shaft and the round rod are rotatably connected to the first circular ring and the second circular ring respectively;

[0015] A push rod is slidably connected to the connecting rod, and a truncated cone block is connected to the end of the slide rod. One end of the push rod is fitted to the inclined surface of the truncated cone block, and the other end of the push rod is fitted to the side wall of the cam. When the backrest is tilted back, the cam rotates to push the push rod, so that the push rod pushes the truncated cone block, and the slide rod slides toward the driving wheel.

[0016] Furthermore, the end of the round rod is connected to a connecting rod, the connecting rod is plugged into the cam, the connecting rod is connected to an arcuate piston rod, the cam is connected to an arcuate piston cylinder, the arcuate piston rod slides on the arcuate piston cylinder, and a spring is connected between the arcuate piston rod and the arcuate piston cylinder;

[0017] The driving motor is connected to a base, the base is slidably connected to the mounting block, the mounting block is fixedly connected to a cylinder, the output end of the cylinder is connected to the base, the arc-shaped piston cylinder is connected to a pipeline, and the pipeline is connected to the cylinder;

[0018] When the inclination of the backrest continues to increase, the connecting rod can rotate relative to the cam, so that the arc-shaped piston rod slides into the arc-shaped piston cylinder, so that the cylinder extends and pushes the drive motor away from the rotating shaft.

[0019] Furthermore, the recovery mechanism further comprises a sliding rod coaxially sliding on the driven wheel, the input shaft is connected with a first small tooth and a first large tooth, and two ends of the sliding rod are respectively connected with a second small tooth and a second large tooth;

[0020] When the backrest reclining angle increases, the sliding rod slides relative to the driven wheel, so that the second small tooth is disengaged from the meshing state with the first large tooth, and the second large tooth is meshed with the first small tooth.

[0021] Furthermore, a swivel is rotatably connected to the second large tooth, an electric telescopic rod is connected to the mounting block, an output end of the electric telescopic rod is connected to the swivel, and when the reclining angle of the backrest increases, the electric telescopic rod extends to push the sliding rod to slide.

[0022] Furthermore, a key slot is provided on the side wall of the sliding rod, and a key matching with the key slot is provided in the driven wheel.

[0023] The beneficial effects of the present invention are analyzed as follows:

[0024] An electric wheelchair with intelligent kinetic energy recovery comprises a support mechanism, a driving mechanism and a recovery mechanism connected to the driving mechanism are arranged at the bottom of the support mechanism; the recovery mechanism comprises a generator, an input shaft is connected to the rotor of the generator, and the drive mechanism comprises a rotating shaft, both ends of the rotating shaft are connected to moving wheels; a slope sensor is arranged on the support mechanism, and when the slope sensor detects that the support mechanism is going downhill, the rotating shaft is transmitted to the input shaft, so that the input shaft rotates to drive the generator.

[0025] The user sits on the support mechanism, and the driving mechanism operates to rotate the moving wheels, thereby moving the device. The slope sensor on the support mechanism detects the inclination of the support mechanism, thereby determining whether the support mechanism is in an uphill state, flat-bottom driving, or downhill state. When the slope sensor detects that the support mechanism is in a downhill state, the rotational force of the rotating shaft is transmitted to the input shaft, so that the input shaft is driven by the rotating shaft to rotate. When the input shaft rotates, it drives the rotor of the generator to rotate, and then the generator runs and generates electricity. The electricity generated by the generator is stored in the battery of the electric wheelchair. The electric wheelchair detects the operating state of the support mechanism through the slope sensor, so that the support mechanism can reasonably recover the kinetic energy of the electric wheelchair when it is in a downhill state, which on the one hand reduces the downhill speed of the electric wheelchair, and on the other hand achieves the effect of recovering kinetic energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 3 It is a schematic diagram of the structure of the gear of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the belt of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the sliding rod of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the connecting rod of the present invention;

[0033] Figure 7 For the present invention Figure 6 The structural diagram of part A in the figure;

[0034] Figure 8 It is a schematic structural diagram of the second wedge block of the present invention.

[0035] icon:

[0036] 100, support mechanism; 110, seat plate; 120, backrest; 130, armrest; 140, control panel; 150, rear support; 160, steering gear; 170, universal wheel; 200, driving mechanism; 210, mounting block; 220, rotating shaft; 230, moving wheel; 240, driving motor; 250, gear; 300, recovery mechanism; 310, generator; 320, input shaft; 330, first large tooth; 340, first small tooth; 350, driving wheel; 351, belt; 360, sliding rod; 361, driven wheel; 362, drive wheel; 363, drive wheel; 364, drive wheel; 365, drive wheel; 366, drive wheel; 367, drive wheel; 368, drive wheel; 369, drive wheel; 370, drive wheel; 371, drive wheel; 372, drive wheel; 373, drive wheel; 374, drive wheel; 375, drive wheel; 376, drive wheel; 377, drive wheel; 378, drive wheel; 379, drive wheel; 380, drive wheel; 381, drive wheel; 382, ​​drive wheel; 383, drive wheel; 384, drive wheel; 385, drive wheel; 386, drive wheel; 387, drive wheel; 388, drive wheel; 389, drive wheel; 390, drive wheel; 401, drive wheel; 402, drive wheel; 403, drive wheel; 404, drive wheel; 405, drive wheel; 406, drive wheel; 407, drive wheel; 410, drive wheel; 411, drive wheel; 412, drive wheel; 413, drive wheel; 414, drive wheel; 2. Mounting seat; 363. Electric telescopic rod; 364. Swivel; 370. Second small tooth; 380. Second large tooth; 400. Trigger mechanism; 401. Connecting rod; 402. First circular ring; 403. Second circular ring; 410. Round rod; 411. Connecting rod; 412. Arc piston rod; 420. Cam; 421. Arc piston cylinder; 430. Pipe; 440. Cylinder; 441. Base; 450. Push rod; 460. Cone block; 461. Sliding rod; 462. First wedge block; 463. Second wedge block; 470. Return spring. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Example

[0041] like Figure 1-Figure 8 As shown, an electric wheelchair for intelligent kinetic energy recovery includes a support mechanism 100, a driving mechanism 200 and a recovery mechanism 300 connected to the driving mechanism 200 are arranged at the bottom of the support mechanism 100; the recovery mechanism 300 includes a generator 310, the rotor of the generator 310 is connected to an input shaft 320, the driving mechanism 200 includes a rotating shaft 220, and both ends of the rotating shaft 220 are connected to moving wheels 230; a slope sensor is arranged on the support mechanism 100, and when the slope sensor detects that the support mechanism 100 is downhill, the rotating shaft 220 is transmitted to the input shaft 320, so that the input shaft 320 rotates to drive the generator 310.

[0042] The working mechanism of the electric wheelchair provided in this embodiment is as follows:

[0043] The user sits on the support mechanism 100, and the driving mechanism 200 operates to rotate the moving wheel 230, thereby moving the device. The slope sensor on the support mechanism 100 detects the inclination of the support mechanism 100, thereby obtaining whether the support mechanism 100 is in an uphill state, flat-bottom driving, or downhill state. When the slope sensor detects that the support mechanism 100 is in a downhill state, the rotational force of the rotating shaft 220 is transmitted to the input shaft 320, so that the input shaft 320 is driven by the rotating shaft 220 to rotate. When the input shaft 320 rotates, it drives the rotor of the generator 310 to rotate, and then the generator 310 operates and generates electricity. The electricity generated by the generator 310 is stored in the battery of the electric wheelchair. The electric wheelchair detects the operating state of the support mechanism 100 through the slope sensor, so that the support mechanism 100 can reasonably recover the kinetic energy of the electric wheelchair when it is in a downhill state, which reduces the downhill speed of the electric wheelchair on the one hand and achieves the effect of recovering kinetic energy on the other hand.

[0044] Regarding the structure of the driving mechanism 200, specifically:

[0045] The driving mechanism 200 further includes a mounting block 210 , a driving motor 240 is slidably connected to the side of the mounting block 210 , and a gear 250 is connected to the output end of the driving motor 240 and the rotating shaft 220 , and the two gears 250 are meshed with each other.

[0046] The setting of the mounting block 210 enables the drive motor 240 to be installed. When the device is started, the drive motor 240 runs to rotate the rotating shaft 220, so that the gear 250 at the end of the rotating shaft 220 drives the gear 250 on the rotating shaft 220 to rotate. At this time, the rotating shaft 220 rotates, thereby causing the moving wheel 230 to rotate, so that the electric wheelchair moves.

[0047] Regarding the structure of the support mechanism 100, specifically:

[0048] The support mechanism 100 includes a seat plate 110 , on which a backrest 120 is hinged via an electric rotating rod. When the slope sensor detects that the support mechanism 100 is moving downhill, the backrest 120 leans back.

[0049] The mounting block 210 is mounted on the lower surface of the seat plate 110. The user sits on the seat plate 110 with his back against the backrest 120. The seat plate 110 is also connected to armrests 130 on both sides. A control panel 140 is mounted on the armrests 130. The user controls the operation of the electric wheelchair through the control panel 140. A rear support 150 is also connected to the side opposite to the moving direction of the device on the seat plate 110. A steering gear 160 is connected to the rear support 150. The output end of the steering gear 160 is connected to a universal wheel 170. The steering gear 160 is controlled by the control panel 140 to drive the axial angle of the universal wheel 170, so that the electric wheelchair can be moved in a certain direction. The moving direction of the electric wheelchair is controlled. When the slope sensor detects that the electric wheelchair is in a downhill state, it sends a signal to the control system. The control system is integrated in the control panel 140. When the control system receives that the electric wheelchair is in a downhill state, the electric rotating rod rotates and drives the backrest 120 to swing relative to the seat plate 110, so that the reclining angle of the backrest 120 increases. At this time, the user's posture leans back, so that the center of gravity of the electric wheelchair moves toward the backrest 120, avoiding the user's body leaning forward and leaving the electric wheelchair when the electric wheelchair is in a downhill state to cause accidental injury, and can also prevent the electric wheelchair from tipping forward and overturning as a whole.

[0050] Regarding the structure of the recovery mechanism 300, specifically:

[0051] The recovery mechanism 300 also includes a driving wheel 350 connected to the rotating shaft 220 , and a driven wheel 361 is rotatably connected to the bottom of the seat plate 110 . A belt 351 is connected between the driving wheel 350 and the driven wheel 361 , and the driven wheel 361 can be transmitted to the input shaft 320 .

[0052] The driving wheel 350 is connected to the rotating shaft 220 through a bearing. When the electric wheelchair is going uphill or in a flat road driving state, the driving wheel 350 can rotate relative to the rotating shaft 220, that is, in this state, the rotating shaft 220 does not drive the driving wheel 350 to rotate, so that the driven wheel 361 is not driven to rotate. If the electric wheelchair is in a downhill state, the driving wheel 350 rotates with the rotating shaft 220. At this time, the driving wheel 350 drives the driven wheel 361 to rotate, so that the driven wheel 361 drives the input shaft 320 to rotate, thereby making the generator 310 run.

[0053] Regarding the structure of the trigger mechanism 400, specifically:

[0054] The trigger mechanism 400 includes a slide bar 461 that slides coaxially in the rotating shaft 220, a first wedge block 462 is connected to the side wall of the slide bar 461, and a second wedge block 463 is radially connected to the side wall of the rotating shaft 220 for sliding movement. The inclined surface of the first wedge block 462 fits with the inclined surface of the second wedge block 463. When the backrest 120 reclines, the slide bar 461 slides toward the driving wheel 350, so that the first wedge block 462 pushes the second wedge block 463 to abut against the driving wheel 350, so that the driving wheel 350 and the rotating shaft 220 rotate synchronously.

[0055] When the backrest 120 is reclined, it means that the electric wheelchair is in a downhill state. At this time, the slide bar 461 slides in the direction of the driving wheel 350, so that the first wedge block 462 connected to the slide bar 461 pushes the second wedge block 463 to slide. At this time, the second wedge block 463 slides in the direction away from the rotating shaft 220, so that the second wedge block 463 can abut against the driving wheel 350. At this time, the driving wheel 350 is rotated with the rotating shaft 220 under the action of friction. The first wedge block 462 and the second wedge block 463 can rely on magnetic attraction or the sliding groove of the slider to ensure that the two are always in contact, ensuring that the second wedge block 463 can be driven to retract into the rotating shaft 220 when the slide bar 461 is reset.

[0056] Regarding how the slide bar 461 moves, specifically:

[0057] The trigger mechanism 400 also includes a connecting rod 401, the two ends of which are respectively connected to a first ring 402 and a second ring 403, a round rod 410 is coaxially connected to the electric rotating rod, and a cam 420 is connected to the end of the round rod 410; the rotating shaft 220 and the round rod 410 are respectively rotatably connected to the first ring 402 and the second ring 403; a push rod 450 is slidably connected to the connecting rod 401, and a truncated cone block 460 is connected to the end of the sliding rod 461, one end of the push rod 450 is attached to the inclined surface of the truncated cone block 460, and the other end of the push rod 450 is attached to the side wall of the cam 420. When the backrest 120 reclines, the cam 420 rotates to push the push rod 450, so that the push rod 450 pushes the truncated cone block 460, and the sliding rod 461 slides toward the driving wheel 350.

[0058] The first circular ring 402 and the second circular ring 403 are respectively sleeved on the rotating shaft 220 and the round rod 410, and the axial positions of the rotating shaft 220 and the round rod 410 do not move, so that the position of the connecting rod 401 does not change. The end of the electric rotating rod of the backrest 120 is connected to the round rod 410. When the backrest 120 reclines, the electric rotating rod drives the round rod 410 to rotate. At this time, the cam 420 at the end of the round rod 410 rotates, so that the rotating cam 420 pushes the push rod 450. At this time, the push rod 450 slides in the direction of the truncated cone block 460, so that the push rod 450 slides along the inclined surface of the truncated cone block 460, so that the truncated cone block 460 is pushed and drives the sliding rod 461 to move axially, and then the first wedge block 462 on the sliding rod 461 pushes the second wedge block 463. A return spring 470 is also sleeved on the sliding rod 461. The two ends of the return spring 470 are respectively abutted against the end of the truncated cone block 460 and the end of the rotating shaft 220, so that the truncated cone block 460 can be reset when it is not pushed.

[0059] How to reduce the energy consumption of electric wheelchairs going downhill:

[0060] The end of the round rod 410 is connected to a connecting rod 411, which is inserted into a cam 420. The connecting rod 411 is connected to an arc-shaped piston rod 412, and the cam 420 is connected to an arc-shaped piston cylinder 421. The arc-shaped piston rod 412 slides on the arc-shaped piston cylinder 421, and a spring is connected between the arc-shaped piston rod 412 and the arc-shaped piston cylinder 421; the driving motor 240 is connected to a base 441, which is slidably connected to the mounting block 210. A cylinder 440 is fixedly connected to the mounting block 210, an output end of the cylinder 440 is connected to a base 441, a pipe 430 is connected to the arc-shaped piston cylinder 421, and the pipe 430 is connected to the cylinder 440; when the inclination of the backrest 120 continues to increase, the connecting rod 411 can rotate relative to the cam 420, so that the arc-shaped piston rod 412 slides into the arc-shaped piston cylinder 421, so that the cylinder 440 extends and pushes the drive motor 240 away from the rotating shaft 220.

[0061] The connecting rod 411 is coaxially connected to the round rod 410, and the insertion position of the connecting rod 411 and the cam 420 deviates from the center of the cam 420, so as to ensure that the round rod 410 can drive the cam 420 to push the push rod 450 to slide when the round rod 410 rotates. The spring connected between the arc piston rod 412 and the arc piston cylinder 421 drives the connecting rod 411 to rotate when the round rod 410 rotates, and the connecting rod 411 drives the arc piston rod 412 to move. The arc piston rod 412 pushes the arc piston cylinder 421 through the spring, so that the arc piston cylinder 421 drives the cam 420 to rotate. After the cam 420 pushes the push rod 450 to slide to the maximum stroke, the rotation of the cam 420 is restricted. The setting of the spring ensures that when the rotation of the cam 420 is not restricted, the arc piston rod 412 does not slide into the arc piston cylinder 421, and the rotation of the cam 420 is blocked and the backrest When the backrest 120 continues to recline, the connecting rod 411 rotates and drives the arc piston rod 412 to slide into the arc piston cylinder 421. At this time, the spring is compressed, so that the air in the arc piston cylinder 421 is transmitted to the cylinder 440 through the pipe 430. At this time, the cylinder 440 extends and pushes the base 441 to move. At this time, the base 441 drives the drive motor 240 away from the rotating shaft 220. At this time, the two gears 250 move away from each other. When the two move away from each other, the drive motor 240 stops running. The stopping of the drive motor 240 is controlled by the reclining angle signal of the backrest 120 received by the control system. When the drive motor 240 stops running, the energy consumption of the electric wheelchair is reduced, and the separation of the two gears 250 reduces the downhill kinetic energy loss of the electric wheelchair, so that more kinetic energy can be obtained by the generator 310 and converted into electrical energy.

[0062] Regarding how the rotor speed of the generator 310 changes, specifically:

[0063] The recovery mechanism 300 also includes a sliding rod 360 that slides coaxially on the driven wheel 361, and the input shaft 320 is connected to a first small tooth 340 and a first large tooth 330, and the two ends of the sliding rod 360 are respectively connected to a second small tooth 370 and a second large tooth 380; when the reclining angle of the backrest 120 increases, the sliding rod 360 slides relative to the driven wheel 361, so that the second small tooth 370 is disengaged from the meshing state with the first large tooth 330, and the second large tooth 380 is meshed with the first small tooth 340.

[0064] When the slope increases, the reclining angle of the backrest 120 increases. After the reclining angle of the backrest 120 increases to a certain angle, the electric telescopic rod 363 runs and pushes the sliding rod 360 to slide, so that the second small tooth 370 on the sliding rod 360 is disengaged from the meshing state with the first large tooth 330 on the input shaft 320, and the second large tooth 380 on the sliding rod 360 is close to the first small tooth 340 on the input shaft 320 and meshes with it, so that when the rotation of the driven wheel 361 is transmitted to the input shaft 320, the rotation speed of the input shaft 320 is further increased, thereby increasing the power generation of the generator 310, and at the same time reducing the rotation resistance of the driven wheel 361, so that the downhill speed of the electric wheelchair is reduced, thereby improving the downhill safety of the electric wheelchair.

[0065] Among the optional methods of this embodiment, the more preferred ones are:

[0066] The second large tooth 380 is rotatably connected with a swivel 364, the mounting block 210 is connected with an electric telescopic rod 363, the output end of the electric telescopic rod 363 is connected to the swivel 364, when the reclining angle of the backrest 120 increases, the electric telescopic rod 363 extends to push the sliding rod 360 to slide.

[0067] A mounting seat 362 is connected to the bottom of the mounting block 210, and a driven wheel 361 rotates on the mounting seat 362. The electric telescopic rod 363 is fixedly connected to the mounting seat 362. The output end of the electric telescopic rod 363 is connected to the second large tooth 380 through a swivel 364, thereby ensuring that the driving force is transmitted to the sliding rod 360 while preventing interference in the rotation of the sliding rod 360.

[0068] Among the optional methods of this embodiment, the more preferred ones are:

[0069] A key slot is provided on the side wall of the sliding rod 360 , and a key that matches the key slot is provided in the driven wheel 361 .

[0070] The sliding rod 360 is coaxially keyed and slidably connected to the driven wheel 361 , so that the sliding rod 360 can rotate along with the driven wheel 361 , and the driven wheel 361 can drive the sliding rod 360 to rotate synchronously.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric wheelchair with intelligent kinetic energy recovery, characterized in that: It comprises a support mechanism (100), wherein a driving mechanism (200) and a recovery mechanism (300) connected to the driving mechanism (200) are arranged at the bottom of the support mechanism (100); The recovery mechanism (300) comprises a generator (310), the rotor of the generator (310) is connected to an input shaft (320), the drive mechanism (200) comprises a rotating shaft (220), both ends of the rotating shaft (220) are connected to moving wheels (230); The support mechanism (100) is provided with a slope sensor, and when the slope sensor detects that the support mechanism (100) is moving downhill, the rotating shaft (220) is transmitted to the input shaft (320), so that the input shaft (320) rotates to drive the generator (310); The driving mechanism (200) further comprises a mounting block (210), a side portion of the mounting block (210) being slidably connected to a driving motor (240), an output end of the driving motor (240) and the rotating shaft (220) being connected to a gear (250), and the two gears (250) being meshed with each other; The support mechanism (100) comprises a seat plate (110), a backrest (120) being hingedly connected to the seat plate (110) via an electric rotating rod, and when the slope sensor detects that the support mechanism (100) is moving downhill, the backrest (120) tilts back; The recovery mechanism (300) further comprises a driving wheel (350) connected to the rotating shaft (220); a driven wheel (361) is rotatably connected to the bottom of the seat plate (110); a belt (351) is connected between the driving wheel (350) and the driven wheel (361); and the driven wheel (361) can be driven to the input shaft (320); The trigger mechanism (400) further comprises a slide bar (461) coaxially sliding in the rotating shaft (220), a first wedge block (462) being connected to the side wall of the slide bar (461), a second wedge block (463) being radially slidably connected to the side wall of the rotating shaft (220), an inclined surface of the first wedge block (462) being in contact with an inclined surface of the second wedge block (463), and when the backrest (120) is tilted back, the slide bar (461) slides in the direction of the driving wheel (350), so that the first wedge block (462) pushes the second wedge block (463) to abut against the driving wheel (350), so that the driving wheel (350) and the rotating shaft (220) rotate synchronously; The trigger mechanism (400) further comprises a connecting rod (401), the two ends of the connecting rod (401) being respectively connected to a first circular ring (402) and a second circular ring (403), the electric rotating rod being coaxially connected to a circular rod (410), and the end of the circular rod (410) being connected to a cam (420); The rotating shaft (220) and the round rod (410) are rotatably connected to the first circular ring (402) and the second circular ring (403) respectively; A push rod (450) is slidably connected to the connecting rod (401), and a truncated cone block (460) is connected to the end of the slide rod (461). One end of the push rod (450) is in contact with the inclined surface of the truncated cone block (460), and the other end of the push rod (450) is in contact with the side wall of the cam (420). When the backrest (120) is tilted back, the cam (420) rotates to push the push rod (450), so that the push rod (450) pushes the truncated cone block (460), and the slide rod (461) slides toward the driving wheel (350). The end of the round rod (410) is connected to a connecting rod (411), the connecting rod (411) is plugged into the cam (420), the connecting rod (411) is connected to an arc-shaped piston rod (412), the cam (420) is connected to an arc-shaped piston cylinder (421), the arc-shaped piston rod (412) slides on the arc-shaped piston cylinder (421), and a spring is connected between the arc-shaped piston rod (412) and the arc-shaped piston cylinder (421); The driving motor (240) is connected to a base (441), the base (441) is slidably connected to the mounting block (210), the mounting block (210) is fixedly connected to a cylinder (440), the output end of the cylinder (440) is connected to the base (441), the arc-shaped piston cylinder (421) is connected to a pipeline (430), and the pipeline (430) is in communication with the cylinder (440); When the inclination of the backrest (120) continues to increase, the connecting rod (411) can rotate relative to the cam (420), so that the arc-shaped piston rod (412) slides into the arc-shaped piston cylinder (421), so that the cylinder (440) extends and pushes the drive motor (240) away from the rotating shaft (220); The recovery mechanism (300) further comprises a sliding rod (360) coaxially sliding on the driven wheel (361), the input shaft (320) is connected to a first small tooth (340) and a first large tooth (330), and two ends of the sliding rod (360) are respectively connected to a second small tooth (370) and a second large tooth (380); When the reclining angle of the backrest (120) increases, the sliding rod (360) slides relative to the driven wheel (361), so that the second small tooth (370) is disengaged from the meshing state with the first large tooth (330), and the second large tooth (380) is meshed with the first small tooth (340).

2. The electric wheelchair with intelligent kinetic energy recovery according to claim 1, characterized in that: The second large tooth (380) is rotatably connected to a swivel (364), the mounting block (210) is connected to an electric telescopic rod (363), an output end of the electric telescopic rod (363) is connected to the swivel (364), and when the reclining angle of the backrest (120) increases, the electric telescopic rod (363) extends to push the sliding rod (360) to slide.

3. The electric wheelchair with intelligent kinetic energy recovery according to claim 2, characterized in that: A key slot is provided on the side wall of the sliding rod (360), and a key that matches the key slot is provided in the driven wheel (361).

Images