Multi-terrain adaptive foldable wheelchair

Abstract

The invention relates to the technical field of wheelchairs, and discloses a multi-terrain adaptive foldable wheelchair which comprises a base, a bearing plate and a mounting frame, the bearing plate is arranged at the bottom end of the base, and the mounting frame is arranged at the bottom end of the bearing plate; a seat mechanism; the seat mechanism is arranged on the base, and the seat mechanism assists a person in getting up through a rotatable mounting plate in the seat mechanism; the comfort degree of the seat mechanism is improved through a supporting frame and an elastic net in the seat mechanism; a second electric push rod is arranged to drive an elastic cushion to be jacked upwards, so that the elastic cushion supports an elastic net to be jacked upwards, when a user sits on a wheelchair, the front end of a cushion can support the thighs more comfortably, and the second electric push rod can drive the elastic cushion to move to change the supporting strength to the thighs at intervals; when the user stands up, the mounting plate rotates upwards, and an obliquely upward force is provided below the user, so that the user can stand up better.

Description

Technical Field

[0001] The present invention relates to the technical field of wheelchairs, in particular to a multi-terrain adaptable foldable wheelchair. Background Art

[0002] Wheelchairs are an important tool for assisting people with limited mobility. They are of various types and functions. Ordinary wheelchairs are mainly composed of wheelchair frames, wheels, brakes and other devices. They are suitable for people with lower limb disabilities, hemiplegia, paraplegia below the chest and people with limited mobility. Among them, wheelchairs are multi-terrain adaptable wheelchairs that can adapt to terrains such as stairs:

[0003] A multi-terrain wheelchair for elderly health care with Chinese patent application number 202210230556.4, this invention includes a multi-terrain roller, a wheelchair main frame, a wheelchair main wheel, a wheelchair cushion, a wheelchair back cushion and a wheelchair back support, the wheelchair main wheel is connected to one end of the wheelchair main frame, the other end of the wheelchair main frame is connected to the multi-terrain roller, the wheelchair cushion is arranged at the upper end of the wheelchair main frame, the lower end of the wheelchair back support is fixedly connected to the upper end of one side of the wheelchair main support, and the wheelchair back cushion is arranged on the side of the wheelchair back support. Compared with the prior art, the present invention adopts a triangular multi-terrain roller main shaft to connect the roller through an elastic telescopic connecting rod, which can be flipped over and over the obstacle when an obstacle is needed, so that the wheelchair has a higher passability, and the elastic telescopic connecting rod has a shock absorbing mechanism, which improves the comfort of use, is easy to use, and has the value of promotion and application.

[0004] The seats in current wheelchairs are fixedly installed on the wheelchair. When the user sits down, the front end of the seat will press on the thigh from below, and the front end position remains unchanged. Over time, the user's thigh muscles will be tired, and it will be inconvenient for users with limited mobility to get up. Summary of the invention

[0005] The object of the present invention is to provide a multi-terrain adaptable foldable wheelchair to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A multi-terrain adaptable foldable wheelchair comprises a base, a bearing plate and a mounting frame, wherein the bearing plate is arranged at the bottom end of the base, and the mounting frame is arranged at the bottom end of the bearing plate;

[0008] A seat mechanism; the seat mechanism is arranged on the base, and the seat mechanism assists a person to stand up through a rotatable mounting plate therein; the seat mechanism improves comfort through a support frame and an elastic net therein;

[0009] Obstacle-clearing mechanism; the obstacle-clearing mechanism is arranged on one side of the mounting frame, and the obstacle-clearing mechanism clears stones and other debris from the traveling wheels of the wheelchair on the road through the cleaning plates therein;

[0010] A pedal mechanism, the pedal mechanism is arranged on one side of the base, and the pedal mechanism is provided with a movable frame therein so that the pedal in the pedal mechanism can be easily folded;

[0011] A through hole and a plurality of fixing holes are provided in the center of the base and one end of the bearing plate.

[0012] Optionally, the chair mechanism includes a fixed frame, a second electric push rod, an elastic pad, a rotating plate, a seat cushion, a sliding frame, a connecting seat, a bracket, a first electric push rod, a connecting piece and a sliding block; the fixed frame is fixedly mounted on one side of the base by screws, a plurality of mounting grooves are provided on the fixed frame, the second electric push rod is fixedly mounted on the wall of the mounting groove, the elastic pad is fixedly mounted on the output end of the second electric push rod, the supporting frame is rotatably mounted on the top of the fixed frame, a plurality of the elastic nets are fixedly mounted on the inner wall of the supporting frame, the elastic pads are located below the corresponding elastic nets, and the rotating plate is fixedly mounted on the On one side of the top edge of the base, the mounting plate is rotatably mounted on the top of the rotating plate, the cushion is fixedly mounted on the top of the mounting plate, the sliding frame is fixedly mounted on the center of the bottom end of the mounting plate, the sliding frame corresponds to the position of the through hole, the slider is slidably mounted on the inner wall of the sliding frame, the connecting seat is fixedly mounted on one side of the slider, the bracket is fixedly mounted on the bottom end of the bearing plate, the first electric push rod is fixedly mounted on the bracket, a metal rod is fixedly mounted on the output end of the first electric push rod, the connecting piece is fixedly mounted on one end of the metal rod, and the connecting piece is rotatably mounted on the inner wall of the connecting seat.

[0013] Optionally, the base and the supporting plate are fixedly connected via the fixing holes and bolts, wheels are rotatably mounted on both sides of the mounting frame, a plurality of auxiliary wheels are mounted on one side of the mounting frame, and a power supply is fixedly mounted on the inner wall of the mounting frame.

[0014] Optionally, the obstacle clearing mechanism includes a shell, a first bevel gear, a second bevel gear, a connecting rod, a third bevel gear, a fourth bevel gear, a first turntable, a first belt, a first double turntable member, a second belt, a second double turntable member, a third belt, an intermittent gear, a second turntable, a spur gear, a rotating rod, a plurality of rotating seats and a connecting shell, the shell is fixedly mounted on both sides of the mounting frame, a portion of the bearing on the wheel is located inside the shell, the first bevel gear is a gear ring, the first bevel gear is fixedly mounted on the bearing on the wheel and is located on the outer wall of the inner part of the shell, the connecting rod is rotatably mounted on the bearing seat on one side of the inner wall of the shell, the second bevel gear and the third bevel gear are fixedly mounted at both ends of the connecting rod respectively, the second bevel gear is meshed with the first bevel gear, the fourth bevel gear is rotatably mounted on the bottom end of the inner wall of the shell, the fourth bevel gear is meshed with the third bevel gear, the first turntable is fixedly mounted on the outer wall of the shaft body on which the bottom end of the fourth bevel gear is installed, the first belt is mounted on the outer wall of the first turntable, the two connecting shells are fixedly mounted on one side of the mounting frame, and the One side of the connecting shell is connected with one side of the corresponding outer shell, the first double turntable member is rotatably mounted on the bottom end of the inner wall of the outer shell, the other end of the first belt is mounted on one of the turntables on the first double turntable member, the second belt is mounted on another turntable on the first double turntable member, the second double turntable member is rotatably mounted on the bottom end of the inner wall of the connecting shell, the second belt is mounted on one of the turntables on the second double turntable member, the third belt is mounted on another turntable on the second double turntable member, the intermittent gear is rotatably mounted on the bottom end of the inner wall of the connecting shell, the second turntable is fixedly mounted on the outer wall of the shaft on which the intermittent gear is mounted, the other end of the third belt is mounted on the outer wall of the second turntable, the spur gear is rotatably mounted on the bottom end of the inner wall of the connecting shell, one end of the spur gear extends to the outside of the bottom end of the connecting shell, the spur gear is meshed with the intermittent gear, the rotating rod is fixedly mounted on one end of the spur gear extending to the outside of the connecting shell, a plurality of rotating seats are fixedly mounted on the bottom end of the rotating rod, and the cleaning plate is rotatably mounted on the inner wall of the rotating seat.

[0015] Optionally, the rotating seats are evenly distributed at the bottom end of the rotating rod, and a plurality of springs are fixedly installed at the bottom end of the rotating rod. The springs are respectively located on both sides of the corresponding cleaning plates, and the other ends of the corresponding two springs are respectively fixedly installed on both sides of the cleaning plates.

[0016] Optionally, a torsion spring is wound around the outer wall of the spur gear, one end of the torsion spring is fixedly mounted on the spur gear, and the other end of the torsion spring is fixedly mounted on the inner wall of the connecting shell.

[0017] Optionally, a plurality of third electric push rods are fixedly installed on both sides of the edges of both ends of the carrying plate, and the output ends of the third electric push rods are downward, and a lifting shell is fixedly installed on the output ends of the third electric push rods, and a plurality of mounting plates are rotatably installed on the inner wall of the lifting shell, and a track is installed on the outer wall of the mounting plate, and a limit plate is fixedly installed on the inner wall of the lifting shell, and the limit plate is located on the inner ring surface of the track, and a driving motor is fixedly installed on one side of the lifting shell, and the output end of the driving motor extends to the inside of the lifting shell, and one of the mounting plates is fixedly installed on the output end of the driving motor.

[0018] Optionally, the pedal mechanism includes a moving rod, a slide groove, a rack, a first motor, a cylindrical gear, a limit rod and a moving block, the slide groove is opened on one side of the surface of the moving rod, the rack is fixedly mounted on the slide groove wall, the moving frame is slidably mounted on the outer wall of the moving rod, the first motor is fixedly mounted on the inner wall of the moving frame, the cylindrical gear is fixedly mounted on the output end of the first motor, the outer wall of the cylindrical gear extends to the outside of the moving frame, the cylindrical gear is meshed with the rack, the moving block is slidably mounted on the outer wall of the limit rod, and the pedal is fixedly mounted between the moving frame and the moving block.

[0019] Optionally, the moving rod and the limiting rod are fixedly mounted on the bottom end of the base by screws, and the moving rod and the limiting rod are respectively located at opposite side edges between the base and the supporting plate.

[0020] Optionally, a mounting seat is fixedly mounted on one side of the supporting plate, a second motor is fixedly mounted on one side of the mounting seat, a backrest is rotatably mounted on the inner wall of the mounting seat, an output end of the second motor extends into the interior of the mounting seat, and one side of the bottom end of the backrest is fixedly mounted on the output end of the second motor.

[0021] The present invention has at least the following beneficial effects:

[0022] (1) This solution sets a second electric push rod to drive the elastic pad to push up, so that the elastic pad supports the elastic net to push up, so that when the user sits on the wheelchair, the front end of the seat cushion can support the thigh more comfortably, and the second electric push rod can drive the elastic pad to move and change the support strength of the thigh every once in a while, so that the thigh muscles can get a good rest and adjustment. By setting a rotatable mounting plate and seat cushion, when the user stands up, the output end of the first electric push rod slowly rises upward, driving the mounting plate to rotate along the rotating plate as the center of the circle, and the mounting plate rotates upward, providing an oblique upward force under the user, so that the user can stand up better;

[0023] (2) In this scheme, the intermittent gear drives the spur gear to rotate a certain distance, and then the torsion spring rebounds to drive the spur gear to reverse back to its original position, thereby driving the rotating rod to rotate a certain angle to remove the stones and other debris in front of the wheels and auxiliary wheels, and then the rotating rod returns to its original position, so that the instability caused by hitting debris when the wheelchair moves forward is reduced;

[0024] (3) The springs on both sides of the cleaning plate of this solution position the cleaning plate in a state of being vertical to the rotating rod, and when encountering a protrusion on the ground, the cleaning plate can be rotated in both directions to avoid colliding with the protrusion on the ground and causing the wheelchair to get stuck;

[0025] (4) In this solution, the first motor starts to drive the cylindrical gear to rotate. Through the meshing between the cylindrical gear and the rack, the footrest can be driven to move along the direction of the moving rod, so that the footrest can be easily folded up. When the user stands up, the footrest can be folded up without blocking the user's feet, further improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a cross-sectional view of the present invention;

[0029] Figure 3 This is an installation diagram of the elastic pad of the present invention;

[0030] Figure 4 For the present invention Figure 2 Enlarged view of point A in the middle;

[0031] Figure 5 It is the installation diagram of the cleaning plate of the present invention;

[0032] Figure 6 is a cutaway cross-sectional view of the housing of the present invention;

[0033] Figure 7 It is a cross-sectional view of the connection shell of the present invention;

[0034] Figure 8 It is the installation diagram of the mobile frame of the present invention;

[0035] Fig. 9 This is the installation diagram of the moving rod and the limiting rod of the present invention;

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Base; 101. Rotating plate; 102. Mounting plate; 103. Cushion; 104. Carrying plate; 105. Through hole; 106. Fixing hole; 107. Sliding frame; 108. Connecting seat; 109. Bracket; 110. First electric push rod; 111. Connecting piece; 112. Sliding block; 113. Support frame; 114. Elastic net; 115. Fixed frame; 116. Second electric push rod; 117. Elastic pad; 118. Mounting frame; 119. Power supply; 120. Auxiliary wheel; 2. Wheel; 201. Housing; 202. First bevel gear; 203. Second bevel gear; 204. Connecting rod; 205. Third bevel gear; 206. Fourth bevel gear; 207. First turntable; 208. First belt ; 209, first double turntable member; 210, second belt; 211, second double turntable member; 212, third belt; 213, intermittent gear; 214, second turntable; 215, spur gear; 216, torsion spring; 217, connecting shell; 3, rotating rod; 301, rotating seat; 302, cleaning plate; 303, spring; 4, moving rod; 401, slide groove; 402, rack; 403, moving frame; 404, first motor; 405, cylindrical gear; 406, limit rod; 407, moving block; 408, foot pedal; 5, mounting seat; 501, second motor; 502, backrest; 6, third electric push rod; 601, lifting shell; 602, mounting plate; 603, limit plate; 604, crawler track. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0039] See also Figure 1-Figure 9The present invention provides a multi-terrain adaptive foldable wheelchair, comprising a base 1, a load-bearing plate 104 and a mounting frame 118, wherein the load-bearing plate 104 is arranged at the bottom end of the base 1, and the mounting frame 118 is arranged at the bottom end of the load-bearing plate 104; a seat mechanism; the seat mechanism is arranged on the base 1, and the seat mechanism assists a person when getting up through a rotatable mounting plate 102 therein; the seat mechanism improves comfort through a support frame 113 and an elastic net 114 therein; an obstacle-clearing mechanism; the obstacle-clearing mechanism is arranged on one side of the mounting frame 118, and the obstacle-clearing mechanism clears stones and other debris at the traveling wheels of the wheelchair on the road through a cleaning plate 302 therein; a pedal mechanism, which is arranged on one side of the base 1, and the pedal mechanism makes it easy to fold up a pedal 408 in the pedal mechanism through a movable frame 403 therein; the base 1 and one end of the load-bearing plate 104 penetrate through the center A through hole 105 and a plurality of fixing holes 106 are provided; by arranging a second electric push rod 116 to drive the elastic pad 117 to push up, the elastic pad 117 supports the elastic net 114 to push up, so that when the user sits on the wheelchair, the front end of the seat cushion 103 can support the thigh more comfortably, and the second electric push rod 116 can drive the elastic pad 117 to move and change the support strength for the thigh every once in a while, so that the muscles in the thigh can get a good rest and adjustment, and by arranging a rotatable mounting plate 102 and the seat cushion 103, when the user stands up, the output end of the first electric push rod 110 slowly rises upward, driving the mounting plate 102 to rotate along the rotating plate 101 as the center of the circle, and the mounting plate 102 rotates upward, providing an oblique upward force under the user, so that the user can stand up better.

[0040] In some embodiments, see Figure 2 , Figure 3 , Figure 4The seat mechanism includes a fixing frame 115, a second electric push rod 116, an elastic pad 117, a rotating plate 101, a cushion 103, a sliding frame 107, a connecting seat 108, a bracket 109, a first electric push rod 110, a connecting piece 111 and a slider 112; the fixing frame 115 is fixedly installed on one side of the base 1 by screws, a plurality of mounting grooves are provided on the fixing frame 115, the second electric push rod 116 is fixedly installed on the wall of the mounting groove, the elastic pad 117 is fixedly installed on the output end of the second electric push rod 116, the supporting frame 113 is rotatably installed on the top of the fixing frame 115, a plurality of elastic nets 114 are fixedly installed on the inner wall of the supporting frame 113, and the elastic pad 117 is fixedly installed on the output end of the second electric push rod 116. Located below the corresponding elastic net 114, the rotating plate 101 is fixedly installed on one side of the top edge of the base 1, the mounting plate 102 is rotatably installed on the top of the rotating plate 101, the cushion 103 is fixedly installed on the top of the mounting plate 102, the sliding frame 107 is fixedly installed on the bottom center of the mounting plate 102, the sliding frame 107 corresponds to the position of the through hole 105, the slider 112 is slidably installed on the inner wall of the sliding frame 107, the connecting seat 108 is fixedly installed on one side of the slider 112, the bracket 109 is fixedly installed on the bottom of the bearing plate 104, the first electric push rod 110 is fixedly installed on the bracket 109, and the output end of the first electric push rod 110 is fixedly installed with a metal rod, and the connecting piece 1 11 is fixedly installed at one end of the metal rod, the connecting piece 111 is rotatably installed on the inner wall of the connecting seat 108, the base 1 and the bearing plate 104 are fixedly connected through the fixing hole 106 and the bolt, the wheels 2 are rotatably installed on both sides of the mounting frame 118, a plurality of auxiliary wheels 120 are installed on one side of the mounting frame 118, and a power supply 119 is fixedly installed on the inner wall of the mounting frame 118; in this example, the elastic net 114 can be made of polyester mesh cloth, which has durability, wrinkle resistance and moisture absorption, and improves the service life, and the elastic pad 117 can be made of polyester sponge pad, which has excellent durability and resilience. When the user sits on the wheelchair, the second electric push rod 116 is started to make the elastic pad 117 rise, and the elastic pad 117 is elastic. The elastic pad 117 is pushed upward against the elastic net 114 to support the user's thigh, and the second electric push rod 116 adjusts the position of the elastic pad 117 at intervals. When the user stands up, the first electric push rod 110 is started, and the output end of the first electric push rod 110 rises to support the mounting plate 102 to rotate upward. The output end of the first electric push rod 110 is rotatably connected to the slider 112 through the connecting piece 111, and the slider 112 slides in the sliding frame 107, so that the output end of the first electric push rod 110 can smoothly drive the mounting plate 102 to rotate upward. In this example, the elastic net 114 is provided to increase the contact area with the user's thigh.

[0041] In some embodiments, see Figure 5 , Figure 6 , Figure 7The obstacle removal mechanism includes a housing 201, a first bevel gear 202, a second bevel gear 203, a connecting rod 204, a third bevel gear 205, a fourth bevel gear 206, a first turntable 207, a first belt 208, a first double turntable member 209, a second belt 210, a second double turntable member 211, a third belt 212, an intermittent gear 213, a second turntable 214, a spur gear 215, a rotating rod 3, a plurality of rotating seats 301 and a connecting shell 217. The housing 201 is fixedly mounted on both sides of the mounting frame 118, a part of the bearing on the wheel 2 is located inside the housing 201, the first bevel gear 202 is a gear ring, and the first bevel gear 208 is a gear ring. The bearing on which the gear 202 is fixedly mounted on the wheel 2 is located on the outer wall of the inner part of the housing 201, the connecting rod 204 is rotatably mounted on the bearing seat on one side of the inner wall of the housing 201, the second bevel gear 203 and the third bevel gear 205 are respectively fixedly mounted on both ends of the connecting rod 204, the second bevel gear 203 is meshed with the first bevel gear 202, the fourth bevel gear 206 is rotatably mounted on the bottom end of the inner wall of the housing 201, the fourth bevel gear 206 is meshed with the third bevel gear 205, the first rotating disk 207 is fixedly mounted on the outer wall of the shaft on which the bottom end of the fourth bevel gear 206 is mounted, the first belt 208 is mounted on the outer wall of the first rotating disk 207, and the two connecting The shell 217 is fixedly mounted on one side of the mounting frame 118, and one side of the connecting shell 217 is connected to one side of the corresponding shell 201. The first double turntable member 209 is rotatably mounted on the bottom end of the inner wall of the shell 201. The other end of the first belt 208 is mounted on one of the turntables on the first double turntable member 209. The second belt 210 is mounted on the other turntable on the first double turntable member 209. The second double turntable member 211 is rotatably mounted on the bottom end of the inner wall of the connecting shell 217. The second belt 210 is mounted on one of the turntables on the second double turntable member 211. The third belt 212 is mounted on the other turntable on the second double turntable member 211. The intermittent gear 213 is rotatably mounted on the bottom end of the inner wall of the connecting shell 217, the second rotating disk 214 is fixedly mounted on the outer wall of the shaft on which the intermittent gear 213 is mounted, the other end of the third belt 212 is mounted on the outer wall of the second rotating disk 214, the spur gear 215 is rotatably mounted on the bottom end of the inner wall of the connecting shell 217, one end of the spur gear 215 extends to the outside of the bottom end of the connecting shell 217, the spur gear 215 is meshed with the intermittent gear 213, the rotating rod 3 is fixedly mounted on one end of the spur gear 215 extending to the outside of the connecting shell 217, a plurality of rotating seats 301 are fixedly mounted on the bottom end of the rotating rod 3, and the cleaning plate 302 is rotatably mounted on the inner wall of the rotating seat 301;When the user rotates the wheel 2 by hand, the wheel 2 rotates to drive the first bevel gear 202 at its bearing to rotate. The first bevel gear 202 rotates through the second bevel gear 203, the connecting rod 204 and the third bevel gear 205, and the fourth bevel gear 206 rotates. The fourth bevel gear 206 rotates to drive the first turntable 207 below it to rotate. The first turntable 207 drives the first double turntable member 209 to rotate through the first belt 208. The first double turntable member 209 drives the second double turntable member 211 to rotate through the second belt 210. The second double turntable member 211 drives the intermittent gear 213 to rotate through the third belt 212. The intermittent gear 213 drives the spur gear 215 to rotate a certain distance, and then the torsion spring 216 rebounds to drive the spur gear 215 to reverse back to its original position, thereby driving the rotating rod 3 to rotate a certain angle, and the stones and other debris in front of the wheel 2 and the auxiliary wheel 120 are pushed away. Then the rotating rod 3 returns to its original position, so that the instability caused by hitting debris when the wheelchair moves forward is reduced. ;

[0042] In some embodiments, see Figure 5 The rotating seats 301 are evenly distributed at the bottom end of the rotating rod 3, and a plurality of springs 303 are fixedly installed at the bottom end of the rotating rod 3. The springs 303 are respectively located on both sides of the corresponding cleaning plates 302, and the other ends of the corresponding two springs 303 are respectively fixedly installed on both sides of the cleaning plates 302. A torsion spring 216 is wound around the outer wall of the spur gear 215, and one end of the torsion spring 216 is fixedly installed on the spur gear 215, and the other end of the torsion spring 216 is fixedly installed on the inner wall of the connecting shell 217; in this example, the springs 303 on both sides of the cleaning plate 302 position the cleaning plate 302 in a state perpendicular to the rotating rod 3, and when encountering protrusions on the ground, they can be rotated in both directions to avoid colliding with the protrusions on the ground and causing the wheelchair to get stuck.

[0043] In some embodiments, see Figure 6 , a plurality of third electric push rods 6 are fixedly installed on both sides of the edges of both ends of the carrying plate 104, the output end of the third electric push rod 6 is downward, and a lifting shell 601 is fixedly installed on the output end of the third electric push rod 6, and a plurality of mounting plates 602 are rotatably installed on the inner wall of the lifting shell 601, and a track 604 is installed on the outer wall of the mounting plate 602, and a limit plate 603 is fixedly installed on the inner wall of the lifting shell 601, and the limit plate 603 is located on the inner circle surface of the track 604, and a driving motor is fixedly installed on one side of the lifting shell 601, and the output end of the driving motor extends to the inside of the lifting shell 601, and one of the mounting plates 602 is fixedly installed on the output end of the driving motor; by setting the track 604, when encountering a step, the third electric push rod 6 is started to drive the lifting shell 601 to descend, and the track 604 contacts the ground until the wheelchair's wheel 2 is supported to leave the ground, and the driving motor is started to drive one of the mounting plates 602 to rotate, so that the track 604 moves to climb the stairs, so that the wheelchair can adapt to multiple terrains.

[0044] In this example, the power supply 119 is provided to supply power to the first motor 404 , the second motor 501 , the drive motor and the first electric push rod 110 , the second electric push rod 116 and the third electric push rod 6 .

[0045] For further information, please refer again to Figure 8 , Fig. 9 The pedal mechanism includes a moving rod 4, a slide groove 401, a rack 402, a first motor 404, a cylindrical gear 405, a limiting rod 406 and a moving block 407. The slide groove 401 is opened on one side of the surface of the moving rod 4, the rack 402 is fixedly installed on the groove wall of the slide groove 401, the moving frame 403 is slidably installed on the outer wall of the moving rod 4, the first motor 404 is fixedly installed on the inner wall of the moving frame 403, the cylindrical gear 405 is fixedly installed on the output end of the first motor 404, the outer wall of the cylindrical gear 405 extends to the outside of the moving frame 403, the cylindrical gear 405 is meshed with the rack 402, the moving block 407 is slidably installed on the outer wall of the limiting rod 406, and the pedal mechanism includes a moving rod 4, a slide groove 401, a rack 402, a limiting rod 406 and a moving block 407. The pedal 408 is fixedly installed between the moving frame 403 and the moving block 407, and the moving rod 4 and the limiting rod 406 are fixedly installed on the bottom end of the base 1 by screws, and the moving rod 4 and the limiting rod 406 are respectively located at the opposite side edges between the base 1 and the supporting plate 104; by setting the first motor 404, the first motor 404 is started to drive the cylindrical gear 405 to rotate, and through the engagement between the cylindrical gear 405 and the rack 402, the foot pedal 408 can be driven to move along the direction of the moving rod 4, so that the foot pedal 408 can be easily folded up. When the user stands up, the foot pedal 408 is folded up and will not block the user's feet, further improving the user experience.

[0046] In this example, the first motor 404, the second motor 501 and the driving motor may be servo motors.

[0047] Furthermore, a mounting base 5 is fixedly installed on one side of the supporting plate 104, a second motor 501 is fixedly installed on one side of the mounting base 5, a backrest 502 is rotatably installed on the inner wall of the mounting base 5, an output end of the second motor 501 extends to the inside of the mounting base 5, and one side of the bottom end of the backrest 502 is fixedly installed on the output end of the second motor 501; when the second motor 501 is started, it drives the backrest 502 to rotate, making it more convenient to rotate and fold the backrest 502.

[0048] The working process and principle of the present invention are as follows: when the user sits on the wheelchair, the second electric push rod 116 is started to make the elastic pad 117 rise, and the elastic pad 117 pushes the elastic net 114 upward to support the user's thigh, and the second electric push rod 116 adjusts the position of the elastic pad 117 at intervals. When the user stands up, the first electric push rod 110 is started, and the output end of the first electric push rod 110 rises to support the mounting plate 102 to rotate upward. The output end of the first electric push rod 110 is rotatably connected to the slider 112 through the connecting piece 111, and the slider 112 slides in the sliding frame 107, so that the output end of the first electric push rod 110 can smoothly drive the mounting plate 102 to rotate upward to support the user to stand up.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-terrain adaptable foldable wheelchair, characterized in that: include: A base (1), a bearing plate (104) and a mounting frame (118), wherein the bearing plate (104) is arranged at the bottom end of the base (1), and the mounting frame (118) is arranged at the bottom end of the bearing plate (104); Seat mechanism; The seat mechanism is arranged on the base (1), and the seat mechanism assists a person in getting up through a rotatable mounting plate (102) therein; the seat mechanism improves comfort through a support frame (113) and an elastic net (114) therein; An obstacle-clearing mechanism; the obstacle-clearing mechanism is arranged on one side of the mounting frame (118), and the obstacle-clearing mechanism clears stones and other debris from the traveling wheels of the wheelchair on the road through a cleaning plate (302) therein; A pedal mechanism, the pedal mechanism being arranged on one side of the base (1), the pedal mechanism being arranged such that a pedal (408) in the pedal mechanism can be easily folded up through a movable frame (403) therein; A through hole (105) and a plurality of fixing holes (106) are provided through the center of one end of the base (1) and the carrying plate (104).

2. The multi-terrain adaptable foldable wheelchair according to claim 1, characterized in that: The chair mechanism comprises a fixed frame (115), a second electric push rod (116), an elastic pad (117), a rotating plate (101), a seat cushion (103), a sliding frame (107), a connecting seat (108), a bracket (109), a first electric push rod (110), a connecting piece (111) and a sliding block (112); the fixed frame (115) is fixedly mounted on one side of the base (1) by screws, a plurality of mounting grooves are arranged on the fixed frame (115), the second electric push rod (116) is fixedly mounted on the wall of the mounting groove, the elastic pad (117) is fixedly mounted on the output end of the second electric push rod (116), the supporting frame (113) is rotatably mounted on the top of the fixed frame (115), a plurality of elastic nets (114) are fixedly mounted on the inner wall of the supporting frame (113), the elastic pad (117) is located below the corresponding elastic nets (114), and the rotating plate (101) is fixedly mounted on the first side of the base (1). The base (1) is mounted on one side of the top edge of the base, the mounting plate (102) is rotatably mounted on the top of the rotating plate (101), the cushion (103) is fixedly mounted on the top of the mounting plate (102), the sliding frame (107) is fixedly mounted on the center of the bottom end of the mounting plate (102), the sliding frame (107) corresponds to the position of the through hole (105), the slider (112) is slidably mounted on the inner wall of the sliding frame (107), the connecting seat (108) is fixedly mounted on one side of the slider (112), the bracket (109) is fixedly mounted on the bottom end of the bearing plate (104), the first electric push rod (110) is fixedly mounted on the bracket (109), a metal rod is fixedly mounted on the output end of the first electric push rod (110), the connecting member (111) is fixedly mounted on one end of the metal rod, and the connecting member (111) is rotatably mounted on the inner wall of the connecting seat (108).

3. The multi-terrain adaptable foldable wheelchair according to claim 1, characterized in that: The base (1) and the bearing plate (104) are fixedly connected via the fixing holes (106) and bolts; wheels (2) are rotatably mounted on both sides of the mounting frame (118); a plurality of auxiliary wheels (120) are mounted on one side of the mounting frame (118); and a power source (119) is fixedly mounted on the inner wall of the mounting frame (118).

4. The multi-terrain adaptable foldable wheelchair according to claim 3, characterized in that: The obstacle removal mechanism comprises a housing (201), a first bevel gear (202), a second bevel gear (203), a connecting rod (204), a third bevel gear (205), a fourth bevel gear (206), a first turntable (207), a first belt (208), a first double turntable member (209), a second belt (210), a second double turntable member (211), a third belt (212), an intermittent gear (213), a second turntable (214), a spur gear (215), a rotating rod (3), a plurality of rotating seats (301) and a connecting shell (217); the housing (201) is fixedly mounted on both sides of the mounting frame (118); a portion of the bearing on the wheel (2) is located inside the housing (201); the first bevel gear (208) is a first bevel gear (209), a second bevel gear (210), a second double turntable member (211), a third belt (212), an intermittent gear (213), a second turntable (214), a spur gear (215), a rotating rod (3), a plurality of rotating seats (301) and a connecting shell (217); The gear (202) is a gear ring. The first bevel gear (202) is fixedly mounted on the bearing on the wheel (2) and is located on the outer wall of the inner part of the housing (201). The connecting rod (204) is rotatably mounted on a bearing seat on one side of the inner wall of the housing (201). The second bevel gear (203) and the third bevel gear (205) are respectively fixedly mounted on both ends of the connecting rod (204). The second bevel gear (203) is meshed with the first bevel gear (202). The fourth bevel gear (206) is rotatably mounted on the bottom end of the inner wall of the housing (201). The fourth bevel gear (206) is meshed with the third bevel gear (205). The first rotating disk (207) is fixedly mounted on the fourth bevel gear (2 06) at the outer wall of the shaft at the bottom end, the first belt (208) is installed on the outer wall of the first turntable (207), the two connecting shells (217) are fixedly installed on one side of the mounting frame (118), and one side of the connecting shell (217) is connected to the corresponding side of the outer shell (201), the first double turntable member (209) is rotatably installed on the bottom end of the inner wall of the outer shell (201), the other end of the first belt (208) is installed on one of the turntables on the first double turntable member (209), the second belt (210) is installed on the other turntable on the first double turntable member (209), the second double turntable member (211) is rotatably installed on the bottom end of the inner wall of the connecting shell (217), and the second belt (21 0) is mounted on one of the turntables on the second double turntable member (211), the third belt (212) is mounted on the other turntable on the second double turntable member (211), the intermittent gear (213) is rotatably mounted on the bottom end of the inner wall of the connecting shell (217), the second turntable (214) is fixedly mounted on the outer wall of the shaft on which the intermittent gear (213) is mounted, the other end of the third belt (212) is mounted on the outer wall of the second turntable (214), the spur gear (215) is rotatably mounted on the bottom end of the inner wall of the connecting shell (217), one end of the spur gear (215) extends to the outside of the bottom end of the connecting shell (217), and the spur gear (215) is meshed with the intermittent gear (213),The rotating rod (3) is fixedly mounted on one end of the spur gear (215) extending to the outside of the connecting shell (217), a plurality of rotating seats (301) are fixedly mounted on the bottom end of the rotating rod (3), and the cleaning plate (302) is rotatably mounted on the inner wall of the rotating seat (301).

5. The multi-terrain adaptable foldable wheelchair according to claim 4, characterized in that: The rotating seats (301) are evenly distributed at the bottom end of the rotating rod (3), and a plurality of springs (303) are fixedly installed at the bottom end of the rotating rod (3). The springs (303) are respectively located on both sides of the corresponding cleaning plate (302), and the other ends of the corresponding two springs (303) are respectively fixedly installed on both sides of the cleaning plate (302).

6. The multi-terrain adaptable foldable wheelchair according to claim 4, characterized in that: A torsion spring (216) is wound around the outer wall of the spur gear (215), one end of the torsion spring (216) is fixedly mounted on the spur gear (215), and the other end of the torsion spring (216) is fixedly mounted on the inner wall of the connecting shell (217).

7. The multi-terrain adaptable foldable wheelchair according to claim 1, characterized in that: A plurality of third electric push rods (6) are fixedly mounted on both sides of the edges of both ends of the bearing plate (104), the output end of the third electric push rod (6) is downward, a lifting shell (601) is fixedly mounted on the output end of the third electric push rod (6), a plurality of mounting plates (602) are rotatably mounted on the inner wall of the lifting shell (601), a crawler (604) is mounted on the outer wall of the mounting plate (602), a limit plate (603) is fixedly mounted on the inner wall of the lifting shell (601), the limit plate (603) is located on the inner circle surface of the crawler (604), a driving motor is fixedly mounted on one side of the lifting shell (601), the output end of the driving motor extends to the inside of the lifting shell (601), and one of the mounting plates (602) is fixedly mounted on the output end of the driving motor.

8. The multi-terrain adaptable foldable wheelchair according to claim 1, characterized in that: The pedal mechanism comprises a moving rod (4), a slide groove (401), a rack (402), a first motor (404), a cylindrical gear (405), a limit rod (406) and a moving block (407); the slide groove (401) is opened on one side of the surface of the moving rod (4); the rack (402) is fixedly installed on the groove wall of the slide groove (401); the moving frame (403) is slidably installed on the outer wall of the moving rod (4); the first motor (404) is fixedly installed on The cylindrical gear (405) is fixedly mounted on the inner wall of the moving frame (403) at the output end of the first motor (404); the outer wall of the cylindrical gear (405) extends to the outside of the moving frame (403); the cylindrical gear (405) is meshed with the rack (402); the moving block (407) is slidably mounted on the outer wall of the limiting rod (406); and the pedal (408) is fixedly mounted between the moving frame (403) and the moving block (407).

9. The multi-terrain adaptable foldable wheelchair according to claim 8, characterized in that: The moving rod (4) and the limiting rod (406) are fixedly mounted on the bottom end of the base (1) by means of screws, and the moving rod (4) and the limiting rod (406) are respectively located at opposite side edges between the base (1) and the supporting plate (104).

10. The multi-terrain adaptable foldable wheelchair according to claim 1, characterized in that: A mounting seat (5) is fixedly mounted on one side of the carrier plate (104), a second motor (501) is fixedly mounted on one side of the mounting seat (5), a backrest (502) is rotatably mounted on the inner wall of the mounting seat (5), an output end of the second motor (501) extends into the interior of the mounting seat (5), and one side of the bottom end of the backrest (502) is fixedly mounted on the output end of the second motor (501).

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