CN201870836U - Enclosed power-driven wheel chair for going upstairs and walking on ground - Google Patents
Enclosed power-driven wheel chair for going upstairs and walking on ground Download PDFInfo
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- CN201870836U CN201870836U CN2010206231844U CN201020623184U CN201870836U CN 201870836 U CN201870836 U CN 201870836U CN 2010206231844 U CN2010206231844 U CN 2010206231844U CN 201020623184 U CN201020623184 U CN 201020623184U CN 201870836 U CN201870836 U CN 201870836U
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Abstract
The utility model discloses an enclosed power-driven wheel chair for going upstairs and walking on the ground, which comprises a machine frame, a front wheel running gear which is arranged in the front of the machine frame, a rear wheel running gear which is arranged at the back of the machine frame, track assemblies which are used for going upstairs and are arranged on two sides of the bottom of the machine frame, a controlling seat which is arranged above the machine frame, a battery, a circuit controlling device, a controlling switch, a front wheel rotary lifting device, a rear wheel rotary lifting device, two rear wheel inward and outward extending devices and the like. A rear wheel driven running motor is connected with and controlled by the circuit controlling device and the controlling switch. A user only needs to press the controlling switch by a hand and uses the circuit controlling device to control a lifting motor to drive front wheels and real wheels to rotate and lift, accordingly, modes between walking on the ground and going upstairs can be alternated. In addition, the extending devices are arranged at the rear wheels to decrease the width of the wheel chair so that hinders caused by stairs or doors can be solved, and all movements are automatically and intelligently controlled and can be finished by the user independently so that extra nursing of other people is not needed. Furthermore, the enclosed power-driven wheel chair for going upstairs and walking on the ground is convenient in use and has capabilities of protection and some functions for special needs, and is further provided with a manual controlling device and a remote control device.
Description
Technical field
This utility model relates to wheelchair, specifically a kind of capable dual-purpose closed type electric wheelchair of Lou Lu of climbing.
Background technology
Electric wheelchair of the prior art is divided into crawler type and wheeled two kinds substantially, and its basic purpose of caterpillar wheelchair is used for climbing solving the crowd's that special procures the problem downstairs that goes up in the building exactly, is an obstruction but runs on the level land with crawler belt, so limit to some extent in use; Be exactly common wheeled electric wheelchair in addition, though use conveniently on the level land, it does not have the building of climbing function; Can not be equipped with two chaptrel chairs for the people with disability upstairs who stays in charged ladder not, be equipped with a wheelchair and just seem that cost is too high unrealistic specially downstairs if go up, thus need a kind of not only can stair climbing but also can be on the level land the convenient wheelchair that uses; This in addition Wheel-chair of taking turns is still too single on function; because the work that need finish on wheelchair as the crowd of special procuring has a lot; the protection that obtains wheelchair also is necessary; do not protect housing or perhaps driver's cabin such as wheelchair of today; cause potential safety hazard easily; do not have fecal and urinary functions, this function of special procuring needs wheelchair to give or the like.
Application number is 200720195479.4, publication number is CN201101646, open day is a kind of belt electric wheelchair of Chinese patent of 2008.08.20, comprise seat, walking mechanism, power section and manipulation control section, the hydraulic support leg that four retractable piston rods are arranged under the seat, the walking mechanism of the seat plate left and right sides is connected with four hinges in length and breadth, and seat also has backrest angle to adjust connecting rod automatically down and plays damping liquid storage cylinder.Walking mechanism can be independent of wheelchair system to be used separately, comprise two cover driving wheels, preceding support wheels at random, after at random support wheel, guide wheel, with wheel, crawler belt, protective cover, double pendulum spare, single pendulum spare and gripper shoe.Handle control section and be provided with multinomial compound gauge tap, comprise mouse shape handle, standpipe, four contact switch, two switches of handle front upper place and the speed-regulating switch on the handle side.This utility model provides the free up/down steps of a kind of energy, can cross little barrier and less than 40 ° ramp, and can be under bad road conditions the belt electric wheelchair of walking freely.This wheelchair has adopted crawler belt, but does not climb the building effect, and function very little, moreover is not so good as after all to use road wheel more more convenient with crawler travel, and frictional force is smaller.
Application number is 200920016450.4, publication number 201492595U, the Chinese patent application of open day 2010-06-02, the electric wheelchair of climbing stairs ladder, comprise vehicle frame, seat, electric speed-changing device and walking mechanism, walking mechanism has drivewheel and driven pulley and the crawler belt that is contained in the vehicle frame below; Vehicle frame is provided with climb-aiding device, its structure is to be connected with support on the wheel shaft of driven pulley, on support, be equipped with and climb the building trailing wheel and climb the building front-wheel, with climb the building trailing wheel and climb the building front-wheel and be furnished with the building of climbing crawler belt mutually, the slotted hole that one end of support is provided with on shifting shaft and the driving lever bottom matches, and driving lever is connected with frame shaft, and the upper end of driving lever is connected to the driving lever handle, be furnished with block board mutually with driving lever, block board is fixed on the vehicle frame; Climb-aiding device is four groups, is contained on the wheel shaft of the driven pulley that is positioned at the forward left and right sides of vehicle frame respectively and is positioned on the wheel shaft of drivewheel of the left and right sides at vehicle frame rear portion, is connected with connecting rod between the left and right sides; Seat is lifted on the vehicle frame by hanging axis and suspension bracket.Have that but stair activity, overall structure are simple, a processing ease, the reliable advantage of flexible movements.This crawler belt wheelchair has solved the problem downstairs that goes up; but still do not run underaction on the level land; frictional force is too big; the drawback that result of use is bad; function is also fewer, does not have protection and solves the function that some special procure action, when stair climbing; the seat support of people and wheelchair is also caused danger when health is brought discomfort at an angle easily.
Application number is 201020010005.X, publication number is 201612760U, open day is the Chinese patent application electric stair climbing road row Double use pedestal Wheel-chair of 2010-10-27, this utility model belongs to medical apparatus and instruments, is used to solve that operation inconvenience, performance that existing various electric wheelchair stairs-movers exist are single, volume is big, crank, problem that cost is high.The technical scheme that adopts is: base structure is car body, and battery case, power set, track rail assembly, electric-controlled switch are housed on car body, it is characterized in that seat passes through hanger, travelling carriage links on the crossbeam of car body, is provided with the wheel lifting assembly in the bottom of car body.This utility model is mainly used in patient, old man's stair activity and road trip.We can see this disclosed prior art, and it has the two-fold advantage of climbing the building and going on a journey flexibly on the level land, but open question still has a lot, and it is intelligent inadequately on these two kinds of functions of realization, after downstairs, in the time of need lowering the wheel that travels, must the rising of wheel decline crawler belt could be realized with the elevating lever that foot goes to step on the lifting assembly, and firmly must be big, this does not become this action with regard to making that the crowd that special procures is intact, must have the nurse personnel to help finish.Be appreciated that this patent application is by being articulated in seat on the frame with hanger, like this, no matter what angle wheelchair becomes, seat all the time center of gravity down, stair activity just can not shake, and is a protection to the occupant.
The purpose that reaches self-care so how can use a wheel Wheel-chair in sum for a people with disability is the problem that needs solve; a series of function comprises gos out downstairs; only need a button just can control conversion crawler belt and wheel automatically then; and then do other work; it is big that want the application scenario; such as windproof and rain proof or how on the way in all case to self protection; how the people with disability who sets up a stall for some curbsides solves problem or the like the problem of defecation for another example, and this utility model is exactly to solve the problems that exist in the prior art.
The utility model content
(1) technical problem that will solve
The purpose of this utility model is the defective that exists at prior art, a kind of Lou Lu of climbing is provided capable dual-purpose closed type electric wheelchair, and having solved the capable dual mode of Lou Helu of climbing that exists in the prior art can better intelligent conversion and the too single problem of function.
(2) technical scheme
The technical scheme that its technical problem that solves this utility model adopts is: the capable dual-purpose closed type electric wheelchair of a kind of Lou Lu of climbing, its structure comprise driver seat, battery, circuit control device and the gauge tap of climbing building track rail assembly, frame top of frame, frame forward-and-rearward front and back wheel running gear, frame two bottom sides; Described trailing wheel running gear comprises trailing wheel, lifting hold concurrently support bar, trailing wheel rotation and lifting hold concurrently transmission main shaft, rear wheel drive movable motor, described trailing wheel is connected the trailing wheel rotation and lifting and holds concurrently on the transmission main shaft by the lifting support bar of holding concurrently, and the hold concurrently axle head of transmission main shaft and trailing wheel of trailing wheel rotation and lifting all is provided with sprocket wheel, and described rear wheel drive movable motor drives and connects trailing wheel by hold concurrently chain between transmission main shaft, sprocket wheel and two sprocket wheels of trailing wheel rotation and lifting; The front-wheel running gear comprises front-wheel and the front-wheel steer device that is connected on the front-wheel connecting axle of frame the place ahead; Described rear wheel drive movable motor is connected and control by circuit controller and gauge tap.
Described electric wheelchair also comprises the front and back wheel rotating lifting gear, described trailing wheel rotating lifting gear drives the transmission main shaft rotation of holding concurrently of trailing wheel rotation and lifting by the trailing wheel lifting motor, and the trailing wheel rotation and lifting transmission main shaft of holding concurrently connects the rotation that drives trailing wheel and rises and falls by the lifting support bar of holding concurrently again; The front-wheel rotating lifting gear connects the front-wheel connecting axle rotation that drives the dress front-wheel by the front-wheel lifting motor and rises and falls; Described front and back wheel lifting motor is connected and control by circuit controller and gauge tap.
Described electric wheelchair also comprises the inside and outside constriction device of two trailing wheels, this device comprises inside and outside motor and the positive backward leading screw of the inside and outside contraction of two trailing wheels of shrinking of trailing wheel, shrink positive backward leading screw rotation inside and outside shrinking driven by motor two trailing wheels inside and outside the trailing wheel, two trailing wheels are inside and outside to shrink trailing wheel rotation and lifting that positive backward leading screw two ends connect hold concurrently transmission main shaft and the inside indentation of two trailing wheels and protruding thereby drive; The inside and outside motor that shrinks of described trailing wheel is connected and control by circuit controller and gauge tap.
Described track rail assembly comprises track drive motor, crawler belt, and described track drive motor drives the crawler belt rotation by the crawler belt power transmission shaft that is arranged on the frame, and at least one end of described track rail assembly is for climbing building perk end; Described front-wheel steer device comprises the front-wheel steer motor, turns to sprocket wheel chain, steering link, and described front-wheel steer motor connects the control front-wheel by turning to sprocket wheel, steering link; Described track drive motor is connected by circuit controller and gauge tap with the front-wheel steer motor and controls.
The driver seat arranged outside of described frame top has the driver's cabin protection housing of band door and window, and this housing rear end is provided with collapsible back protective cover; Described driver seat is provided with the rotating handrail that can lift, and this handrail front end is provided with the gauge tap of connecting circuit controller; Be provided with hand steering gear and glove platform in the driver's cabin in described seat the place ahead.
Described driver seat is suspended on the frame by the hinge rotation, and described battery places under-seat, and described under-seat also is provided with Device for relieving nature, and this Device for relieving nature is provided with flusher and drying unit.
The described lifting support bar arranged outside of holding concurrently has and is used for protecting lifting the hold concurrently sprocket wheel chain outer protective cover of chain on the sprocket wheel of transmission main shaft and trailing wheel axle head and the sprocket wheel of the trailing wheel rotation and lifting at support bar two ends of holding concurrently.
Also include receiver of remote-control sytem in the described circuit controller, external remote control transmitter.
(3) beneficial effect
A kind of Lou Lu of climbing of the present utility model is capable, and dual-purpose closed type electric wheelchair is compared with prior art, has following beneficial effect:
This utility model is by being provided with the rotating lifting gear of front and back wheel, thereby realized transformation easily from the crawler belt mode to the running on wheels mode, and This move does not need manpower to go to step on, only need click gauge tap, change walking manner and climb the building mode by the rotation and lifting of circuit controller control lifting motor drive front and back wheel then with hands.
Added the retractor device of trailing wheel simultaneously, we know because the existence of crawler belt, trailing wheel and the gangbar of being bound to is wideer than crawler belt, but this is an obstruction for stair or door, when so trailing wheel rotates to top employing crawler belt mode, it is concordant with the crawler belt both sides to be necessary inwardly to contract, thus this device solves that adds one difficult problem.
Everything is automatic intelligent control; do not need the fifth wheel to nurse; take people of people and just can finish everything; easy to use; and there are defencive function and some to special procure function; set up manual overvide and remote control unit simultaneously, realize that multiple mode controls, use selecting for different crowds.
Description of drawings
Fig. 1 is a kind of structural representation of climbing the capable dual-purpose closed type electric wheelchair of Lou Lu of the present utility model;
Fig. 2 is the plan structure sketch map of its mid frame of Fig. 1 wheelchair.
Among the figure: 1. frame; 2. the driver's cabin of band door and window is protected housing; 3. battery; 4, crawler belt; 5, trailing wheel; 6, front-wheel; 7, circuit control device; 8, seat; 9, rotating handrail; 10, gauge tap; 11, hinge; 12, collapsible back protective cover; 13, the trailing wheel rotation and lifting transmission main shaft of holding concurrently; 14, the positive backward leading screw of the inside and outside contraction of two trailing wheels; 15, sprocket wheel chain outer protective cover; 16, chain; 17, hand steering gear and glove platform; 18, Device for relieving nature; 19, the inside and outside motor that shrinks of trailing wheel; 20, trailing wheel lifting motor; 21, rear wheel drive movable motor; 22, track drive motor; 23, front-wheel steer motor; 24, front-wheel lifting motor; 25, steering link.
The specific embodiment
Next explain below with reference to Figure of description the capable dual-purpose closed type electric wheelchair of a kind of Lou Lu of climbing of the present utility model being done.
A kind of capable dual-purpose closed type electric wheelchair of Lou Lu of climbing, its structure comprise driver seat 8, battery 3, circuit control device 7 and the gauge tap 10 of climbing building track rail assembly, frame top of frame 1, frame forward-and-rearward front and back wheel running gear, frame two bottom sides; Described trailing wheel running gear comprises trailing wheel 5, lifting hold concurrently support bar, trailing wheel rotation and lifting hold concurrently transmission main shaft 13, rear wheel drive movable motor 21, described trailing wheel is connected the trailing wheel rotation and lifting and holds concurrently on the transmission main shaft by the lifting support bar of holding concurrently, and the hold concurrently axle head of transmission main shaft and trailing wheel of trailing wheel rotation and lifting all is provided with sprocket wheel, and described rear wheel drive movable motor drives and connects trailing wheels by hold concurrently chain 16 between transmission main shaft 13, sprocket wheel and two sprocket wheels of trailing wheel rotation and lifting; The front-wheel running gear comprises front-wheel 6 and the front-wheel steer device that is connected on the front-wheel connecting axle of frame the place ahead; Described rear wheel drive movable motor 21 is connected and control by circuit controller 7 and gauge tap 10.Described electric wheelchair also comprises the front and back wheel rotating lifting gear, described trailing wheel rotating lifting gear drives transmission main shaft 13 rotations of holding concurrently of trailing wheel rotation and liftings by trailing wheel lifting motor 20, and the trailing wheel rotation and lifting transmission main shaft of holding concurrently connects the rotation that drives trailing wheel 5 and rises and falls by the lifting support bar of holding concurrently again; The front-wheel rotating lifting gear connects the front-wheel connecting axle rotation that drives dress front-wheel 6 by front-wheel lifting motor 24 and rises and falls; Described front and back wheel lifting motor is connected and control by circuit controller and gauge tap.This utility model is by being provided with the rotating lifting gear of front and back wheel, thereby realized transformation easily from the crawler belt mode to the running on wheels mode, and This move does not need manpower to go to step on, only need click gauge tap, change walking manner and climb the building mode by the rotation and lifting of circuit controller control lifting motor drive front and back wheel then with hands.
Described electric wheelchair also comprises the inside and outside constriction device of two trailing wheels, this device comprises inside and outside motor 19 and the positive backward leading screw 14 of the inside and outside contraction of two trailing wheels of shrinking of trailing wheel, shrink positive backward leading screw rotation inside and outside shrinking driven by motor two trailing wheels inside and outside the trailing wheel, two trailing wheels are inside and outside to shrink trailing wheel rotation and lifting that positive backward leading screw two ends connect hold concurrently transmission main shaft and the 5 inside indentations and protruding of two trailing wheels thereby drive; The inside and outside motor that shrinks of described trailing wheel is connected and control by circuit controller and gauge tap.We know because the existence of crawler belt, certainly will trailing wheel and gangbar wideer than crawler belt, but this is to hinder for stair or door, so trailing wheel rotates to the top when adopting the crawler belt mode, it is concordant with the crawler belt both sides to be necessary inwardly to contract, thus this device solves that adds one difficult problem.
Described track rail assembly comprises track drive motor 22, crawler belt 4, and described track drive motor drives the crawler belt rotation by the crawler belt power transmission shaft that is arranged on the frame, and at least one end of described track rail assembly is for climbing building perk end; Described front-wheel steer device comprises front-wheel steer motor 23, turns to the sprocket wheel chain, steering link 25, and described front-wheel steer motor connects control front-wheel 6 by turning to sprocket wheel, steering link; Described track drive motor is connected by circuit controller 7 and gauge tap 10 with the front-wheel steer motor and controls.
The driver seat arranged outside of described frame top has the driver's cabin protection housing 2 of band door and window, and this housing rear end is provided with collapsible back protective cover 12; Described driver seat is provided with the rotating handrail 9 that can lift, and this handrail front end is provided with the gauge tap of connecting circuit controller; Be provided with hand steering gear and glove platform 17 in the driver's cabin in described seat the place ahead.Described driver seat is suspended on the frame by hinge 11 rotations, and described battery 3 places under-seat, and described under-seat also is provided with Device for relieving nature 18, and this Device for relieving nature is provided with flusher and drying unit.The described lifting support bar arranged outside of holding concurrently has and is used for protecting lifting the hold concurrently sprocket wheel chain outer protective cover 15 of chain on the sprocket wheel of transmission main shaft and trailing wheel axle head and the sprocket wheel of the trailing wheel rotation and lifting at support bar two ends of holding concurrently.Also include receiver of remote-control sytem in the described circuit controller, external remote control transmitter.Everything is automatic intelligent control; do not need the fifth wheel to nurse; take people of people and just can finish everything; easy to use; and there are defencive function and some to special procure function; set up manual overvide and remote control unit simultaneously, realize that multiple mode controls, use selecting for different crowds.
The above embodiment is a kind of of the more preferably concrete embodiment of this utility model, and common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacement all should be included in the protection domain of the present utility model.
Claims (8)
1. climb the capable dual-purpose closed type electric wheelchair of Lou Lu for one kind, its structure comprises driver seat, battery, circuit control device and the gauge tap of climbing building track rail assembly, frame top of frame, frame forward-and-rearward front and back wheel running gear, frame two bottom sides; It is characterized in that: described trailing wheel running gear comprises trailing wheel, lifting hold concurrently support bar, trailing wheel rotation and lifting hold concurrently transmission main shaft, rear wheel drive movable motor, described trailing wheel is connected the trailing wheel rotation and lifting and holds concurrently on the transmission main shaft by the lifting support bar of holding concurrently, and the hold concurrently axle head of transmission main shaft and trailing wheel of trailing wheel rotation and lifting all is provided with sprocket wheel, and described rear wheel drive movable motor drives and connects trailing wheel by hold concurrently chain between transmission main shaft, sprocket wheel and two sprocket wheels of trailing wheel rotation and lifting; The front-wheel running gear comprises front-wheel and the front-wheel steer device that is connected on the front-wheel connecting axle of frame the place ahead; Described rear wheel drive movable motor is connected and control by circuit controller and gauge tap.
2. a kind of capable dual-purpose closed type electric wheelchair of Lou Lu of climbing according to claim 1, it is characterized in that: described electric wheelchair also comprises the front and back wheel rotating lifting gear, described trailing wheel rotating lifting gear drives the transmission main shaft rotation of holding concurrently of trailing wheel rotation and lifting by the trailing wheel lifting motor, and the trailing wheel rotation and lifting transmission main shaft of holding concurrently connects the rotation that drives trailing wheel and rises and falls by the lifting support bar of holding concurrently again; The front-wheel rotating lifting gear connects the front-wheel connecting axle rotation that drives the dress front-wheel by the front-wheel lifting motor and rises and falls; Described front and back wheel lifting motor is connected and control by circuit controller and gauge tap.
3. a kind of capable dual-purpose closed type electric wheelchair of Lou Lu of climbing according to claim 1 and 2, it is characterized in that: described electric wheelchair also comprises the inside and outside constriction device of two trailing wheels, this device comprises inside and outside motor and the positive backward leading screw of the inside and outside contraction of two trailing wheels of shrinking of trailing wheel, shrink positive backward leading screw rotation inside and outside shrinking driven by motor two trailing wheels inside and outside the trailing wheel, two trailing wheels are inside and outside to shrink trailing wheel rotation and lifting that positive backward leading screw two ends connect hold concurrently transmission main shaft and the inside indentation of two trailing wheels and protruding thereby drive; The inside and outside motor that shrinks of described trailing wheel is connected and control by circuit controller and gauge tap.
4. a kind of capable dual-purpose closed type electric wheelchair of Lou Lu of climbing according to claim 1 and 2, it is characterized in that: described track rail assembly comprises track drive motor, crawler belt, described track drive motor drives the crawler belt rotation by the crawler belt power transmission shaft that is arranged on the frame, and at least one end of described track rail assembly is for climbing building perk end; Described front-wheel steer device comprises the front-wheel steer motor, turns to sprocket wheel chain, steering link, and described front-wheel steer motor connects the control front-wheel by turning to sprocket wheel, steering link; Described track drive motor is connected by circuit controller and gauge tap with the front-wheel steer motor and controls.
5. a kind of capable dual-purpose closed type electric wheelchair of Lou Lu of climbing according to claim 1 and 2 is characterized in that: the driver seat arranged outside of described frame top has the driver's cabin protection housing of band door and window, and this housing rear end is provided with collapsible back protective cover; Described driver seat is provided with the rotating handrail that can lift, and this handrail front end is provided with the gauge tap of connecting circuit controller; Be provided with hand steering gear and glove platform in the driver's cabin in described seat the place ahead.
6. a kind of capable dual-purpose closed type electric wheelchair of Lou Lu of climbing according to claim 1 and 2, it is characterized in that: described driver seat is suspended on the frame by the hinge rotation, described battery places under-seat, described under-seat also is provided with Device for relieving nature, and this Device for relieving nature is provided with flusher and drying unit.
7. a kind of capable dual-purpose closed type electric wheelchair of Lou Lu of climbing according to claim 1 and 2 is characterized in that: the described lifting support bar arranged outside of holding concurrently has and is used for protecting lifting the hold concurrently sprocket wheel chain outer protective cover of chain on the sprocket wheel of transmission main shaft and trailing wheel axle head and the sprocket wheel of the trailing wheel rotation and lifting at support bar two ends of holding concurrently.
8. a kind of capable dual-purpose closed type electric wheelchair of Lou Lu of climbing according to claim 1 and 2 is characterized in that: also include receiver of remote-control sytem, external remote control transmitter in the described circuit controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206231844U CN201870836U (en) | 2010-11-25 | 2010-11-25 | Enclosed power-driven wheel chair for going upstairs and walking on ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206231844U CN201870836U (en) | 2010-11-25 | 2010-11-25 | Enclosed power-driven wheel chair for going upstairs and walking on ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201870836U true CN201870836U (en) | 2011-06-22 |
Family
ID=44158771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206231844U Expired - Lifetime CN201870836U (en) | 2010-11-25 | 2010-11-25 | Enclosed power-driven wheel chair for going upstairs and walking on ground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201870836U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102028590A (en) * | 2010-11-25 | 2011-04-27 | 韩克礼 | Dual-purpose enclosed electric wheelchair for climbing stairs and walking |
| US9278036B2 (en) | 2011-10-04 | 2016-03-08 | Siu Lun Lee | Electric wheelchair |
| CN112896276A (en) * | 2021-01-29 | 2021-06-04 | 汕头大学 | Trolley for walking upstairs and downstairs |
-
2010
- 2010-11-25 CN CN2010206231844U patent/CN201870836U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102028590A (en) * | 2010-11-25 | 2011-04-27 | 韩克礼 | Dual-purpose enclosed electric wheelchair for climbing stairs and walking |
| CN102028590B (en) * | 2010-11-25 | 2012-12-05 | 韩克礼 | Dual-purpose enclosed electric wheelchair for climbing stairs and walking |
| US9278036B2 (en) | 2011-10-04 | 2016-03-08 | Siu Lun Lee | Electric wheelchair |
| CN112896276A (en) * | 2021-01-29 | 2021-06-04 | 汕头大学 | Trolley for walking upstairs and downstairs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110622 Effective date of abandoning: 20130227 |
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| RGAV | Abandon patent right to avoid regrant |