CN112472440B - Adjustable electric stair climbing wheelchair - Google Patents
Adjustable electric stair climbing wheelchair Download PDFInfo
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- CN112472440B CN112472440B CN202011330719.3A CN202011330719A CN112472440B CN 112472440 B CN112472440 B CN 112472440B CN 202011330719 A CN202011330719 A CN 202011330719A CN 112472440 B CN112472440 B CN 112472440B
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- sliding sleeve
- wheelchair
- assembly
- wheel
- rod
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
- A61G5/061—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps for climbing stairs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
- A61G5/063—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps with eccentrically mounted wheels
- A61G5/065—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps with eccentrically mounted wheels with three or more wheels mounted on a rotary cross member, e.g. spiders or spoked wheels with small wheels at the end of the spokes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
Abstract
The invention provides an adjustable electric ladder stand wheelchair, which comprises a seat main body frame (1), a driving wheel structure (2), an auxiliary wheel structure (3) and a drive control assembly (4), wherein the driving wheel structure (2) comprises a driving motor (21), a telescopic assembly (22), a gearbox assembly (23), a sliding sleeve assembly (24), an inner wheel disc (25) and an outer wheel ring (26); the telescopic assembly (22) comprises a telescopic rod (221), an electric annular sliding sleeve (222), a driving gear (223), a positioning toothed rod (224) and a positioning gear (225), and the gearbox assembly (23) comprises a speed change gear pair (231), a rack (232) and a push rod (233). The electric stair climbing wheelchair effectively realizes the switching between the flat ground and the stair climbing, and has simple operation and high stability; meanwhile, the wheelchair is light in weight, stable in running when climbing a ladder, free of damage to the road surface, high in practicability, high in safety and good in comfort.
Description
Technical Field
The invention relates to the technical field of wheelchairs, in particular to an adjustable electric stair climbing wheelchair.
Background
The wheelchair is an important medical rehabilitation tool, is not only a walking tool for physically disabled persons or mobility-handicapped persons, but also can enable the patients to do physical exercises and participate in social activities by means of the wheelchair. The common wheelchair generally comprises a wheelchair frame, wheels, a brake device and a seat back. The hand-operated wheelchair is additionally provided with a hand-operated device on the basis of a common wheelchair; the electric wheelchair is additionally provided with an electronic power-assisted system on the basis of a common wheelchair, so that the physical consumption of a user is reduced; on the basis of the electric wheelchair, the intelligent wheelchair is added with functions of positioning movement, standing movement, remote control movement and internet correlation and is used for assisting in social activities.
With the rapid increase of the population in China and the aging phenomenon of the society, the demand on wheelchairs is more and more common. The wheelchair technology used in the flat ground or in the case of small slopes is well established in the prior art, but in the case of stairs, for example: at present, elevators are not installed in some old multi-storey buildings, and a disabled person passage is not specially arranged in some public places, and only stairs for pedestrians are arranged, so that the requirements for wheelchair technology are higher and higher at present, and particularly the wheelchair for climbing stairs is used.
The prior art mainly falls into three main categories to the wheelchair of climbing stair function, promptly: legged, planetary, and tracked; the leg-foot type wheelchair has a complex structure and high manufacturing cost, and cannot be applied to the market; the single planet wheel type wheelchair has large fluctuation of motion, is easy to generate large jolt and has poor stability; the crawler-type wheelchair is large in size, heavy in weight, easy to damage road surfaces or stairs, large in resistance moment in the movement process, difficult to realize in the reversing process and high in manufacturing cost. Therefore, although the electric stair climbing wheelchair is needed by the disabled, the old with inconvenient legs and feet and the hemiplegic patients, the stair climbing wheelchair is difficult to popularize due to the constraint of numerous conditions. Therefore, there is a need to design a ladder wheelchair with high stability, high comfort, fast and accurate switching, low cost and low weight, so as to meet the daily activity requirements of the physically disabled or the mobility-handicapped.
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide an adjustable electric stair climbing wheelchair which is simple to operate, light in weight, high in stability, free of damage to stairs or the ground, stable in whole, free of large jolt, large in elastic amplitude and comfortable in riding when the wheelchair is used for climbing stairs in a moving process.
The purpose of the invention is realized by the following technical scheme:
the utility model provides an electronic cat ladder wheelchair with adjustable which characterized in that:
the seat comprises a seat main body frame, a driving wheel structure, an auxiliary wheel structure and a driving control assembly; the driving wheel structures are respectively and fixedly arranged on two sides of the lower end of the seat main body frame, and the auxiliary wheel structures are arranged on two sides of the front end of the seat main body frame;
the driving wheel structure comprises a driving motor, a telescopic assembly, a gearbox assembly, a sliding sleeve assembly, an inner wheel disc and an outer wheel ring;
the driving motor is fixedly arranged at the lower side of the seat main body frame, the output end of the driving motor is fixedly connected with the telescopic assembly, the telescopic assembly comprises a telescopic rod, an electric annular sliding sleeve, a driving gear, a positioning toothed bar and a positioning gear, the telescopic rod comprises a thin rod and a thick rod, one end of the thin rod is fixedly connected with the output end of the driving motor, the other end of the thin rod is slidably connected with the thick rod, the end part of the thick rod, which is close to the thin rod, is fixedly connected with the electric annular sliding sleeve, the electric annular sliding sleeve is sleeved on the outer wall of the thin rod and is slidably connected with the outer wall of the thin rod, the end part of the thick rod, which is far away from the thin rod, is fixedly sleeved with the positioning gear, the positioning gear is close to one side of the thin rod, the surface of the thick rod is provided with a smooth section, the smooth section is far away from one side of the positioning gear, and the outer wall of the thick rod is sequentially sleeved with the positioning toothed bar and the driving gear, the positioning toothed bar is close to the smooth section, is sleeved with the thick bar through a bearing (namely the positioning toothed bar and the thick bar can rotate relatively), and is fixedly sleeved with the thick bar;
the inner wheel disc, the sliding sleeve assembly and the outer wheel ring form a main body frame of the driving wheel structure, the sliding sleeve assembly comprises a fixed sleeve and a sliding sleeve, the fixed sleeve is uniformly arranged on the outer wall of the inner wheel disc and is fixedly connected with the inner wheel disc, one end, far away from the inner wheel disc, of the fixed sleeve is in sliding connection with the sliding sleeve, one end, far away from the fixed sleeve, of the sliding sleeve is fixedly connected with the inner wall of the outer wheel ring, the outer wheel ring is an arc-shaped wheel ring, a plurality of outer wheel rings form a complete circular wheel ring, and the number of the outer wheel rings is consistent with that of the sliding sleeve assembly; the central position of the inner wheel disc is provided with a gear hole relative to the positioning gear, the initial position of the positioning gear is clamped in the gear hole, and the driving motor is ensured to rotate to drive the telescopic rod to rotate, so that the inner wheel disc and the outer wheel disc are driven to rotate;
fixed cover inboard (promptly with location ratch homonymy) is fixed and is set up the gearbox subassembly, the gearbox subassembly includes change gear pair, rack and push rod, change gear pair one end with location ratch is kept away from the one end meshing of thick pole (during initial condition), the other end with rack toothing, the rack with fixed cover inboard sliding connection, the rack is kept away from the fixed push rod that sets up of one end of interior rim plate, the push rod is kept away from the one end of rack with outer rim plate inner wall fixed connection, just the push rod outer wall with slide cover inboard fixed connection slides the slip of sliding sleeve for fixed cover through the motion of push rod.
Further preferably, the seat main body frame is composed of a plurality of support rods, and comprises a seat frame body, wheelchair armrests, wheelchair pushing handles and a leg placing plate.
Further optimization, the wheelchair armrest and the wheelchair pushing handle are provided with manual control switches, and the manual control switches are electrically connected with the driving control assembly.
The auxiliary wheel structure is a planet wheel structure and comprises a wheel frame and idler wheels, the idler wheels are uniformly arranged on the wheel frame along the circumference, and the wheel frame is fixedly connected with the front end of the seat main body frame through a bearing.
Further optimization is carried out, an infrared sensor is arranged at the front end of the auxiliary wheel structure, and the infrared sensor is electrically connected with the drive control assembly.
Preferably, the driving control assembly comprises a battery and a controller assembly, the battery and the controller assembly are fixedly mounted on the back of the seat main body frame, and the driving motor is electrically connected with the battery and the controller assembly.
Further optimization is carried out, the bearing and the bearing seat assembly are arranged at the output end of the driving motor, so that stable output of the driving motor is ensured, and axial jumping cannot occur.
Further optimization is carried out, driving motor with set up the protection casing between the interior rim plate, flexible subassembly is located in the protective housing, avoid external impurity (like stone, domestic waste) card to go into in the flexible subassembly, lead to whole operating device jamming.
Further optimization is carried out, and the output end of the driving motor is fixedly connected with the thin rod through a coupler.
Further optimization is carried out, a plurality of latches are uniformly arranged on the inner wall of the electric annular sliding sleeve, the thin rod outer wall corresponds to the latches are provided with a plurality of chutes, the chutes are through grooves along the axis direction of the thin rod, the latches are clamped in the chutes, the electric annular sliding sleeve is ensured to be connected with the thin rod in a sliding manner and simultaneously rotates along with the thin rod, namely, the relative movement of the electric annular sliding sleeve and the thin rod is only the translation along the axis direction of the thin rod.
Preferably, the sliding groove is of a trapezoid structure, and the short side of the trapezoid structure is close to the outer wall of the slender rod.
And further optimizing, wherein the electric annular sliding sleeve is electrically connected with the drive control assembly.
Further optimization is carried out, the thicknesses of the driving gear, the positioning toothed bar and the positioning gear are all consistent, and the length of the smooth section is consistent with the thickness of the positioning gear.
Further optimization is carried out, and the number of the sliding sleeve assemblies is 5-8.
Further optimized, the fixed sleeve and the sliding sleeve are both of a concave structure.
In a further optimization, the gearbox assembly further comprises a gearbox shell used for protecting the transmission gear pair and the rack and avoiding gear clamping.
In a further optimization, the push rod and the sliding sleeve are fixedly connected with the outer wheel ring through a fixing plate and a screw assembly.
The invention has the following technical effects:
according to the device, the rotation of the driving wheel structure is realized through the rotation between the driving motor and the telescopic rod and the meshing between the positioning gear and the inner wheel disc, so that the forward and backward movement of the whole wheelchair is realized, in the process, the positioning toothed rod is meshed with the gearbox assembly, and the positioning toothed rod is sleeved with the telescopic rod through the bearing (the driving gear is not meshed with the gearbox assembly and rotates independently), so that the positioning toothed rod cannot rotate due to the rotation of the telescopic rod, the movement of the gearbox assembly cannot be generated, the sliding sleeve assembly cannot change, and the driving wheel structure always keeps a complete circle; when electronic annular sliding sleeve circular telegram, its promotion telescopic link extension, drive gear and gearbox subassembly meshing this moment, smooth section lie in the gear hole of interior rim plate, consequently, driving motor rotates and can not lead to interior rim plate to rotate, its rotation leads to gearbox subassembly to rotate (guarantee that the flexible process with advancing of action wheel structure is independent, can not influence each other), thereby lead to push rod and sliding sleeve motion, outer rim expand outward, and then increase the radius of initiative wheel structure, realize steady cat ladder.
The structure of the invention can carry out different switching according to the state of the flat ground and the state of the ladder stand, thereby ensuring that the ground and the ladder stand can both stably and effectively move forward, and having good safety and high comfort; meanwhile, the ladder has the advantages of simple structure, light weight, no serious damage to the ground, good stability in the ladder climbing process, suitability for people with limb injuries or mobility difficulties under various road conditions, and strong practicability.
Drawings
Fig. 1 is a schematic overall structure diagram of an electric ladder wheelchair in an embodiment of the invention.
Figure 2 is a side view of an electric ladder wheelchair in an embodiment of the invention.
Figure 3 is a bottom view of an electric ladder wheelchair in an embodiment of the invention.
Fig. 4 is a schematic structural diagram of a driving wheel structure of the electric ladder stand wheelchair in the embodiment of the invention.
Fig. 5 is a sectional view taken along line a-a of fig. 4.
Fig. 6 is a view from direction B of fig. 4.
Fig. 7 is an expansion view of the sliding sleeve component of the electric stair climbing wheelchair after being extended and retracted according to the embodiment of the invention.
Figure 8 is a cross-sectional view of a telescoping assembly of an electric ladder wheelchair in an embodiment of the invention.
Fig. 9 is a cross-sectional view taken along line C-C of fig. 8.
Wherein, 1, a seat main body frame; 11. a seat frame body; 12. a wheelchair armrest; 13. the wheelchair pushes the handle; 14. a leg placement plate; 2. a driving wheel structure; 21. a drive motor; 211. a bearing and bearing housing assembly; 22. a telescopic assembly; 221 an expansion link; 2210. a smooth section; 2211. a thin rod; 22110. a chute; 2212. a thick rod; 222. an electric annular sliding sleeve; 2221. clamping teeth; 223. a drive gear; 224. positioning a toothed bar; 2241. a bearing; 225. positioning a gear; 220. a protective housing; 23. a gearbox assembly; 231. a speed change gear pair; 232. a rack; 233. a push rod; 230. a transmission housing; 24. a sliding sleeve assembly; 241. fixing a sleeve; 242. a sliding sleeve; 25. an inner wheel disc; 251. a gear hole; 26. an outer wheel ring; 260. a fixing plate and screw assembly; 3. an auxiliary wheel structure; 31. a wheel carrier; 32. a roller; 4. the control component is driven.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment is as follows:
as shown in fig. 1 to 9, an adjustable electric stair climbing wheelchair is characterized in that:
comprises a seat main body frame 1, a driving wheel structure 2, an auxiliary wheel structure 3 and a driving control component 4; the driving wheel structures 2 are respectively and fixedly arranged on two sides of the lower end of the seat main body frame 1, and the auxiliary wheel structures 3 are arranged on two sides of the front end of the seat main body frame 1; the seat main body frame 1 is composed of a plurality of support rods, including a seat frame body 11, a wheelchair armrest 12, a wheelchair push handle 13 and a leg placing plate 14. The wheelchair armrest 12 and the wheelchair pushing handle 13 are provided with manual control switches, and the manual control switches are electrically connected with the driving control assembly 4.
The driving wheel structure 2 comprises a driving motor 21, a telescopic assembly 22, a gearbox assembly 23, a sliding sleeve assembly 24, an inner wheel disc 25 and an outer wheel ring 26;
driving motor 21 fixed mounting is in seat main body frame 1 downside, its output and flexible subassembly 22 fixed connection, and driving motor 21 output sets up bearing and bearing frame subassembly 211, guarantees that driving motor 21 output is steady, axial runout can not appear. The telescopic assembly 22 comprises a telescopic rod 221, an electric annular sliding sleeve 222, a driving gear 223, a positioning toothed bar 224 and a positioning gear 225, the telescopic rod 221 comprises a thin rod 2211 and a thick rod 2212, one end of the thin rod 2211 is fixedly connected with the output end of the driving motor 21 through a coupler, the other end of the thin rod 2211 is connected with the thick rod 2212 in a sliding manner, one end of the thick rod 2212 close to the thin rod 2211 is fixedly connected with the electric annular sliding sleeve 222, the electric annular sliding sleeve 222 is sleeved on the outer wall of the thin rod 2211 and is connected with the outer wall of the thin rod 2211 in a sliding manner, a plurality of latches 2221 are uniformly arranged on the inner wall of the electric annular sliding sleeve 222, a plurality of sliding grooves 22110 are arranged on the outer wall of the thin rod 2211 corresponding to the latches 2221, the sliding grooves 22110 are through grooves along the axial direction of the thin rod 2211, the latches 2221 are clamped in the sliding grooves 22110, the electric annular sliding sleeve 222 is ensured to be connected with the thin rod 2211 in a sliding way and rotate along with the thin rod 2211, namely, the relative movement of the electric annular sliding sleeve 222 and the thin rod 2211 is only translation along the axial direction of the thin rod 2211; preferably, the sliding groove 22110 is of a trapezoid structure, and the short side of the trapezoid structure is close to the outer wall of the slender rod 2211; the electric annular sliding sleeve 222 is electrically connected with the driving control assembly 4. The end part of one end of the thick rod 2212, which is far away from the thin rod 2211, is fixedly sleeved with a positioning gear 225, the positioning gear 225 is close to one side of the thin rod 2211, the surface of the thick rod 2212 is provided with a smooth section 2210, the smooth section 2210, which is far away from one side of the positioning gear 225, the outer wall of the thick rod 2212 is sequentially sleeved with a positioning toothed bar 224 and a driving gear 223, the positioning toothed bar 224 is close to the smooth section 2210, the positioning toothed bar 224 is sleeved with the thick rod 2212 through a bearing 2241 (namely, the positioning toothed bar 224 and the thick rod 2212 can rotate relatively), and the driving gear 223 is fixedly sleeved with the thick rod 2212; the thickness of the driving gear 223, the positioning rack 224 and the positioning gear 225 are all the same, and the length of the smooth section 2210 is the same as the thickness of the positioning gear 225.
The inner wheel disc 25, the sliding sleeve assembly 24 and the outer wheel ring 26 form a main body frame of the driving wheel structure 2, the sliding sleeve assembly 24 is 5-8, preferably 6, and at the moment, the positioning rack bar is also an 'x' -shaped rack bar (see fig. 5). The sliding sleeve assembly 24 includes a fixing sleeve 241 and a sliding sleeve 242, and both the fixing sleeve 241 and the sliding sleeve 242 are of a concave structure. The fixing sleeve 241 is uniformly arranged on the outer wall of the inner wheel disc 25 and fixedly connected with the inner wheel disc 25, one end, far away from the inner wheel disc 25, of the fixing sleeve 241 is connected with the sliding sleeve 242 in a sliding mode, one end, far away from the fixing sleeve 241, of the sliding sleeve 242 is fixedly connected with the inner wall of the outer wheel ring 26, the outer wheel ring 26 is an arc-shaped wheel ring, the outer wheel rings 26 form a complete circular wheel ring, and the number of the outer wheel rings 26 is consistent with that of the sliding sleeve assemblies 24; a gear hole 251 is formed in the center of the inner wheel disc 25 relative to the positioning gear 225, and the initial position of the positioning gear 225 is clamped in the gear hole 251, so that the driving motor 21 is ensured to rotate to drive the telescopic rod 221 to rotate, and the inner wheel disc 25 and the outer wheel disc 26 are driven to rotate;
the gearbox assembly 23 is fixedly arranged on the inner side of the fixing sleeve 241 (namely on the same side as the positioning rack bar 224), the gearbox assembly 23 comprises a speed change gear pair 231, a rack 232 and a push rod 233, one end of the speed change gear pair 231 is meshed with one end, away from the thick bar 2212, of the positioning rack bar 224 (in an initial state), the other end of the speed change gear pair is meshed with the rack 232, the rack 232 is in sliding connection with the inner side of the fixing sleeve 241, one end, away from the inner wheel disc 25, of the rack 232 is fixedly provided with the push rod 233, one end, away from the rack 232, of the push rod 233 is fixedly connected with the inner wall of the outer wheel disc 26, the outer wall of the push rod 233 is fixedly connected with the inner side of the sliding sleeve 242, and the sliding sleeve 242 is driven to slide relative to the fixing sleeve 241 through the movement of the push rod 233. The gear box assembly 23 further comprises a gear box housing 230 for protecting the gear pair 231 and the rack 232 from jamming. The push rod 233 and the sliding sleeve 242 are fixedly connected to the outer rim 26 by a fixing plate and screw assembly 260.
Set up protection casing 220 between driving motor 21 and the interior reel 25, flexible subassembly 22 is located protection casing 220, avoids during external impurity (like stone, domestic waste) card goes into flexible subassembly 22, leads to whole operating device jamming.
The auxiliary wheel structure 3 is a planet wheel structure and comprises a wheel frame 31 and rollers 32, the rollers 32 are uniformly arranged on the wheel frame 31 along the circumference, and the wheel frame 31 is fixedly connected with the front end of the seat main body frame 1 through a bearing (the bearing for the conventional tire in the field is adopted, and the invention is not discussed much); the front end of the auxiliary wheel structure 3 is provided with an infrared sensor (the conventional infrared sensor in the field is adopted to identify whether the front part is a flat road or a stair, and the invention is not discussed in detail), and the infrared sensor is electrically connected with the driving control component 4.
The driving control assembly 4 includes a battery and a controller assembly, the battery and the controller assembly are fixedly installed on the back of the seat main body frame 1, and the driving motor 21 is electrically connected with the battery and the controller assembly.
The working principle is as follows:
when the device works, the driving control assembly 4 controls the driving motor 21 to rotate, the driving motor 21 drives the expansion link 221 to rotate, at this time, the electric annular sliding sleeve 222, the driving gear 223 and the positioning gear 225 rotate together with the expansion link 221, the positioning toothed bar 224 is sleeved with the expansion link 221 through the bearing 2241, so that the positioning toothed bar 224 does not rotate, the gearbox assembly 23 does not move, the sliding sleeve assembly 24 does not change, and the outer rims 26 are connected with each other to form a complete circle (as shown in fig. 6); the driving gear 223 rotates in the protection casing 220 and does not contact with the inner wall of the protection casing 220, the positioning gear 225 rotates to drive the inner wheel disc 25 to rotate, and further the whole driving wheel structure 2 is driven to rotate, so that the wheelchair can move forward and backward on the flat ground.
When the infrared sensor detects that the front is a staircase, the driving control assembly 4 firstly stops the operation of the driving motor 21, and then controls the electric annular sliding sleeve 222 to slide relative to the thin rod 2211, so as to drive the thick rod 2212 to slide relative to the thin rod 2211, the smooth section 2210 is clamped into the gear hole 251 of the inner wheel disc 25, the driving gear 223 is meshed with the speed change gear pair 231, the driving motor 21 is restored to operate, the driving motor 21 rotates to drive the telescopic rod 221 to rotate, at the moment, the electric annular sliding sleeve 222, the driving gear 223 and the positioning gear 225 rotate together with the telescopic rod 221, the driving gear 223 rotates to drive the speed change gear pair 231 to rotate, so as to drive the rack 232 to slide, the rack 232 slides to drive the push rod 233 to move, and further drive the sliding sleeve 242 to slide relative to the fixed sleeve 241, at the moment, the outer ring 26 is unfolded (as shown in fig. 7), and the diameter of the driving wheel structure 2 is enlarged; meanwhile, the smooth section 2210 is clamped into the gear hole 251, so that the driving wheel structure 2 cannot move forward when the telescopic rod 221 rotates. Then the driving control assembly 4 controls the driving motor 21 to stop running, the electric annular sliding sleeve 222 slides back to the initial position, the positioning rack bar 224 is meshed with the speed changing gear pair 231 again, the positioning gear 225 is meshed with the gear hole 251 again, then the sliding of the electric annular sliding sleeve 222 is stopped, the driving motor 21 rotates, and the driving wheel structure 2 pushes the wheelchair to move forward.
Under the promotion of action wheel structure 2 to the wheelchair, the gyro wheel 32 of auxiliary wheel structure 3 contacts with the ladder in turn and realizes climbing the step, because the diameter of action wheel structure 2 increases, improves the focus this moment, and outer felly 26 edge card after expanding simultaneously provides the lift force on the stair step, makes the whole steady climbing of wheelchair go up the step, realizes the cat ladder function of wheelchair.
After the ladder climbing is completed, the rotation of the driving motor 21 is stopped as described above, the electric annular sliding sleeve 222 is started to slide, then the driving motor 21 is started to rotate reversely, the sliding sleeve assembly 24 is contracted, the outer rim 26 is restored to a complete circular rim (as shown in fig. 6), then the electric annular sliding sleeve 222 returns to the initial position, and the driving of the driving motor 21 is continued to advance.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like are used in the orientations and positional relationships indicated in the drawings only for the convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, for example, as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an electronic cat ladder wheelchair with adjustable which characterized in that:
comprises a seat main body frame (1), a driving wheel structure (2), an auxiliary wheel structure (3) and a driving control component (4); the driving wheel structures (2) are respectively and fixedly arranged on two sides of the lower end of the seat main body frame (1), and the auxiliary wheel structures (3) are arranged on two sides of the front end of the seat main body frame (1);
the driving wheel structure (2) comprises a driving motor (21), a telescopic component (22), a gearbox component (23), a sliding sleeve component (24), an inner wheel disc (25) and an outer wheel ring (26);
the driving motor (21) is fixedly installed on the lower side of the seat body frame (1), the output end of the driving motor is fixedly connected with a telescopic assembly (22), the telescopic assembly (22) comprises a telescopic rod (221), an electric annular sliding sleeve (222), a driving gear (223), a positioning toothed bar (224) and a positioning gear (225), the telescopic rod (221) comprises a thin bar (2211) and a thick bar (2212), one end of the thin bar (2211) is fixedly connected with the output end of the driving motor (21), the other end of the thin bar (2211) is slidably connected with the thick bar (2212), the end of the thick bar (2212) close to the thin bar (2211) is fixedly connected with the electric annular sliding sleeve (222), the electric annular sliding sleeve (222) is sleeved on the outer wall of the thin bar (2211) and is slidably connected with the outer wall of the thin bar (2211), and the end of the thick bar (2212) far away from the thin bar (2211) is fixedly connected with the positioning gear (225), a smooth section (2210) is arranged on the surface of the thick rod (2212) on the side, close to the thin rod (2211), of the positioning gear (225), a positioning toothed bar (224) and a driving gear (223) are sequentially sleeved on the outer wall of the thick rod (2212) on the side, away from the positioning gear (225), of the smooth section (2210), the positioning toothed bar (224) is close to the smooth section (2210) and the positioning toothed bar (224) is sleeved with the thick rod (2212) through a bearing (2241), and the driving gear (223) is fixedly sleeved with the thick rod (2212);
the main body frame of the driving wheel structure (2) is composed of the inner wheel disc (25), the sliding sleeve assembly (24) and the outer wheel ring (26), the sliding sleeve assembly (24) comprises a fixed sleeve (241) and a sliding sleeve (242), the fixed sleeve (241) is uniformly arranged on the outer wall of the inner wheel disc (25) and fixedly connected with the inner wheel disc (25), one end, far away from the inner wheel disc (25), of the fixed sleeve (241) is slidably connected with the sliding sleeve (242), one end, far away from the fixed sleeve (241), of the sliding sleeve (242) is fixedly connected with the inner wall of the outer wheel ring (26), the outer wheel ring (26) is an arc-shaped wheel ring, a plurality of outer wheel rings (26) form a complete circular wheel ring, and the number of the outer wheel rings (26) is consistent with that of the sliding sleeve assembly (24); a gear hole (251) is formed in the center of the inner wheel disc (25) relative to the positioning gear (225), and the initial position of the positioning gear (225) is clamped in the gear hole (251);
fixed cover (241) inboard fixed gearbox subassembly (23) that sets up, gearbox subassembly (23) include change gear pair (231), rack (232) and push rod (233), change gear pair (231) one end with location ratch (224) are kept away from the one end meshing of thick pole (2212), the other end with rack (232) meshing, rack (232) with fixed cover (241) inboard sliding connection, rack (232) are kept away from the one end of inner wheel dish (25) is fixed and is set up a push rod (233), push rod (233) are kept away from the one end of rack (232) with outer rim (26) inner wall fixed connection, just push rod (233) outer wall with sliding sleeve (242) inboard fixed connection.
2. The adjustable electric ladder wheelchair as claimed in claim 1, wherein: the seat main body frame (1) consists of a plurality of support rods and comprises a seat frame body (11), wheelchair armrests (12), a wheelchair pushing handle (13) and a leg placing plate (14).
3. The adjustable electric ladder wheelchair as claimed in claim 2, wherein: the wheelchair armrest (12) and the wheelchair pushing handle (13) are provided with manual control switches, and the manual control switches are electrically connected with the driving control assembly (4).
4. The adjustable electric stair climbing wheelchair as claimed in claim 1, wherein: the auxiliary wheel structure (3) is a planet wheel structure and comprises a wheel carrier (31) and idler wheels (32), the idler wheels (32) are uniformly installed on the wheel carrier (31) along the circumference, and the wheel carrier (31) is fixedly connected with the front end of the seat main body frame (1) through a bearing.
5. The adjustable electric ladder wheelchair as claimed in claim 1, wherein: the drive control assembly (4) comprises a battery and a controller assembly, the battery and the controller assembly are fixedly installed on the back of the seat main body frame (1), and the drive motor (21) is electrically connected with the battery and the controller assembly.
6. The adjustable electric ladder wheelchair as claimed in claim 1, wherein: the output end of the driving motor (21) is fixedly connected with the thin rod (2211) through a coupler.
7. The adjustable electric stair climbing wheelchair as claimed in claim 1, wherein: the inner wall of the electric annular sliding sleeve (222) is uniformly provided with a plurality of latches (2221), the outer wall of the slender rod (2211) corresponds to the latches (2221) and is provided with a plurality of sliding grooves (22110), the sliding grooves (22110) are through grooves along the axis direction of the slender rod (2211), and the latches (2221) are clamped in the sliding grooves (22110).
8. The adjustable electric stair climbing wheelchair as claimed in claim 1, wherein: the electric annular sliding sleeve (222) is electrically connected with the drive control assembly (4).
9. The adjustable electric stair climbing wheelchair as claimed in claim 1, wherein: the gearbox assembly (23) further comprises a gearbox housing (230).
10. The adjustable electric stair climbing wheelchair as claimed in claim 1, wherein: the push rod (233) and the sliding sleeve (242) are fixedly connected with the outer wheel ring (26) through a fixing plate and screw assembly (260).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330719.3A CN112472440B (en) | 2020-11-24 | 2020-11-24 | Adjustable electric stair climbing wheelchair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330719.3A CN112472440B (en) | 2020-11-24 | 2020-11-24 | Adjustable electric stair climbing wheelchair |
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| CN112472440A CN112472440A (en) | 2021-03-12 |
| CN112472440B true CN112472440B (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011330719.3A Active CN112472440B (en) | 2020-11-24 | 2020-11-24 | Adjustable electric stair climbing wheelchair |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20220074191A (en) * | 2020-11-27 | 2022-06-03 | 현대자동차주식회사 | Wheel for driving and mobility including the same |
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| CN210185884U (en) * | 2019-05-09 | 2020-03-27 | 山东理工大学 | Wheelchair wheel auxiliary device capable of climbing steps |
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| RU2055560C1 (en) * | 1992-05-27 | 1996-03-10 | Александр Дмитриевич Элизов | Method for movement of self-propelled invalid wheeled chair over flights of stairs and self-propelled invalid wheeled chair |
| KR100478371B1 (en) * | 2003-01-09 | 2005-03-24 | 김서림 | Running equipment for stairs, slope way, rough road |
| ITBO20030540A1 (en) * | 2003-09-17 | 2005-03-18 | Tgr Srl | APPARATUS FOR CONSTANT SPEED MOTORIZATION OF |
| CN201337599Y (en) * | 2009-01-21 | 2009-11-04 | 徐州工程学院 | Electric walking assistant vehicle capable of moving on stairs |
| JP6427827B2 (en) * | 2015-04-21 | 2018-11-28 | 株式会社をくだ屋技研 | wheelchair |
| FR3041284B1 (en) * | 2015-09-18 | 2017-11-24 | Beautiful And Usable | VARIABLE DIAMETER WHEEL |
| TWI632075B (en) * | 2016-05-13 | 2018-08-11 | 林伯剛 | Deformable tire |
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| CN106428284B (en) * | 2016-08-30 | 2018-11-02 | 陆任行 | Polypody independently moves toter |
| CN107963140A (en) * | 2017-11-17 | 2018-04-27 | 大连理工大学 | Intelligent tracing climbs building load-carrying cleaning device |
| CN108309599B (en) * | 2018-02-01 | 2023-04-25 | 安徽工程大学 | Stair climbing wheelchair |
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| CN111216767B (en) * | 2020-03-12 | 2021-06-25 | 重庆文理学院 | Civil engineering building materials transport vechicle |
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| CN103112510A (en) * | 2013-02-01 | 2013-05-22 | 北京理工大学 | Multi-terrain self-balancing two-wheel car |
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