CN102697609B - Electric wheelchair and steering control device thereof - Google Patents
Electric wheelchair and steering control device thereof Download PDFInfo
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- CN102697609B CN102697609B CN201210150179.XA CN201210150179A CN102697609B CN 102697609 B CN102697609 B CN 102697609B CN 201210150179 A CN201210150179 A CN 201210150179A CN 102697609 B CN102697609 B CN 102697609B
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Abstract
The invention discloses an electric wheelchair and a steering control device of the electric wheelchair. The electric wheelchair comprises a rack, a travel device, a seat device and the steering control device, wherein the rack comprises a front rack, a rear rack, a main rack and a seat rack, the travel device comprises a pair of front wheels and a rear wheel, and the steering control device comprises an enclosed flexible connecting piece with a certain intensity and three pairs of guide wheels capable of supporting and guiding the flexible connecting pipe; the flexible connecting piece is sheathed at a spindle of the rear wheel in a winding mode so as to drive the rear wheel to turn, the flexible connecting piece extending out of the spindle extends forwards to the first guide wheel, then extends forwards to the second guide wheel, and finally extends backwards to the third guide wheel, an operation handle is coaxially connected with the second guide wheel, the flexible connecting piece is driven by operating the operation handle so as to wind the second guide wheel, and the flexible connecting piece extending out from the third guide wheel horizontally extends to the third guide wheel on the opposite side. The electric wheelchair disclosed by the invention has the advantages of low cost, easiness in operation and flexibility and stability in steering.
Description
Technical field
The present invention relates to electric wheelchair, particularly relate to a kind of steering control device for electric wheelchair and there is the electric wheelchair of this steering control device.
Background technology
China progresses into aging society, improves life of elderly person quality, love old people becomes social important topic.Old people with advancing age, has the inconvenience of a considerable amount of old people's legs and feet, affects normal outdoor activity.Therefore, for old people provides a kind of low cost, the easy to operate and stable walking-replacing tool of traveling, be the important ring implementing love old people policy.Except old people, the people with disability of lower limb disability or temporarily handicapped patient, also have same demand.
Wheelchair is a kind of important apparatus of helping the disabled, and is also the desirable walking-replacing tool of the old people of legs and feet inconvenience.But common wheelchair, generally needs the upper limbs force by occupant self to drive, or is promoted to exercise by other people.
Relative to traditional push chairs, the power of electric wheelchair is not only applicable to the old people got old and weak, same, and it is also suitable for the people with disability of lower limb disability or not walking patient.Electric wheelchair has the lasting and adjustable advantage of speed of energy-conserving and environment-protective, energy supply, also no longer relies on man-driven to advance.
But along with the raising (such as 6-10 kilometer is per hour) of electric wheelchair speed, its brake technique can adapt to the needs of running at high speed.But, but there is certain deficiency in its steering.The steering of prior art electric wheelchair, usual use electric steering system, electric steering system adds the cost of wheelchair on the one hand, on the other hand, electric steering system is when 6-10 kilometer speed hourly turns to, therefore and be not suitable for weak old people or patient takes occupant has the sensation of discontinuous (such as one one), brings discomfort to occupant.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide low, the easy manipulation of a kind of cost and turn to flexibly with the steering control device stably for electric wheelchair, with overcome prior art steering control device cost high and turn to time smoothness difference technical problem.
Another object of the present invention is to provide a kind of electric wheelchair with steering control device of the present invention.
The present invention is achieved through the following technical solutions:
A kind of electric wheelchair, it is characterized in that, described electric wheelchair comprises support, running gear, seat unit and steering control device, described support comprises fore-stock, after-poppet and the seat support for supporting described seat unit, described running gear comprises a pair front-wheel being arranged at described fore-stock and the trailing wheel with electric driver being arranged at described after-poppet, and described steering control device comprises: the closed flexible connecting member with some strength and be connected to a pair first guide wheels of described support, a pair second guide wheels and a pair the 3rd guide wheels; Described flexible connecting member is supported by described a pair first guide wheels, described a pair second guide wheels and described a pair the 3rd guide wheels and is led, and described flexible connecting member is also wound in described trailing wheel rotating shaft to drive described rear-axle steering; Described a pair first guide wheels, the described flexible connecting member extended from described trailing wheel rotating shaft extends out to forward described first guide wheel, before described first guide wheel is backward, extend to described second guide wheel; Described a pair second guide wheels, the described flexible connecting member extended from described second guide wheel extands rearward to described 3rd guide wheel, with described second guide wheel concentric be connected with operating grip, passing through operation operating grip to make user drives described second guide wheel to rotate, and is wound in described second guide wheel to drive described flexible connecting member along the direction that described operating grip moves; Described a pair the 3rd guide wheels, the described flexible connecting member extended from described 3rd guide wheel extends horizontally to described 3rd guide wheel of offside.
Beneficial effect of the present invention is, compared with the prior art, steering control device of the present invention and electric wheelchair of the present invention have the following advantages:
1, cost is low, steering control device of the present invention, adopts mechanical steering, is combined, reduce the cost of steering control device by the simple mechanical organ such as guide wheel, flexible connecting member.
2, turn to steadily, steering control device of the present invention is pure frame for movement, also no longer includes incoherent sensation of electric steering system, improve the stationarity turned to when therefore turning to.
3, motility and operation ease, when needs turn to, only needs according to daily habits, and the operating grip of the operation left and right sides, can realize turning to, and is convenient to user operation.
Accompanying drawing explanation
Fig. 1 is the schematic front view of the electric wheelchair of first embodiment of the invention;
Fig. 2 is the schematic perspective view of the electric wheelchair of first embodiment of the invention;
Fig. 3 is the schematic perspective view of the steering control device of first embodiment of the invention;
Fig. 4 is the schematic perspective view of the steering control device of second embodiment of the invention;
Fig. 5 is the schematic perspective view of the steering control device of third embodiment of the invention;
Fig. 6 is the schematic front view of the electric wheelchair of second embodiment of the invention;
Fig. 7-Fig. 9 is the schematic perspective view of the electric wheelchair of second embodiment of the invention;
Figure 10 is that schematic diagram is looked on the right side of the electric wheelchair of second embodiment of the invention;
Figure 11 is the schematic top plan view of the electric wheelchair of second embodiment of the invention;
Figure 12 is the hooking device schematic diagram of the electric wheelchair of second embodiment of the invention;
Figure 13 is the folded state schematic diagram of the electric wheelchair of second embodiment of the invention;
Wherein, the description of reference numerals of each element is as follows:
1 the near front wheel 2 off-front wheel 3 trailing wheel
4 flexible connecting member 5 rotating shaft socket housing 6 left-hand operation handles
7 fore-stock girder 8 one main support 9 east side operation handles
10 medicated cushion 11 cushion bracket 12 backrests
13 handrail 14 pedal 15 back bracket
16 handrail rotating shaft 17 handrail locating rod 18 backrest connectors
19 lugs 20 strengthen boss 21 brake lever
22 brake cable 23 grip part 24 connecting rings
30 rear axis 31 rear-wheel hub 32 back vent crossbeams
33 back vent vertical pole 34 front support stand 35 front wheel members
36 accumulator 40 guide wheels
41 guide wheel 42 guide wheel 43 guide wheels
44 guide wheel 45 brace 46U shape framves
47 hold-down screw 48 connecting plate 49 hold-down screws
51 guide wheel 52 guide wheel 53 guide wheels
54 guide wheel 55 connector 56U shape framves
57 hold-down screw 58 connecting plate 59 hold-down screws
60 connect vertical pole 61 front beam 62 front longitudinal
71 vertical poles to 72 vertical poles to 73 vertical poles pair
74 rotating shaft upper connectors 77 the 3rd cross bar (self-lock rod)
Connector 82 cover plate under the rotating shaft of 80 times longerons 81
Top board linked up with by 83 side plates 87
89 Self-locking hanging hook 90 rotating shafts
92 jointed shaft 94 jointed shaft 95 through shafts
96 through shaft 97 through shaft 98 jointed shafts
99 axle center
Detailed description of the invention
The exemplary embodiments embodying feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various changes in different embodiments, it neither departs from the scope of the present invention, and explanation wherein and accompanying drawing are the use when explain in itself, and is not used to limit the present invention.
The electric wheelchair of the embodiment of the present invention, has the electric wheelchair steering control device of the embodiment of the present invention.
In this description, left and right is that the left and right directions be sitting on wheelchair with occupant is as the criterion, and occupant's left hand side is left, and right hand side be the right side, occupant towards a side be front, after an occupant side is dorsad.
The electric wheelchair of the embodiment of the present invention, four major parts can be divided into according to function, namely support the support of whole electric wheelchair, directly contact with user and support user parts of body seat unit, realize the traveling of electric wheelchair and the running gear of brake and realize electric wheelchair travelling the steering control device turned to.
Briefly, the electric wheelchair of the embodiment of the present invention is three-wheel wheelchair, and running gear comprises trailing wheel 3 and front-wheel, and front-wheel comprises the near front wheel 1 and off-front wheel 2; Seat unit mainly comprises medicated cushion 10, backrest 12, handrail 13 and pedal 14; Support mainly comprises fore-stock for connecting front-wheel, for connecting the after-poppet of trailing wheel, seat support and the main support being connected fore-stock and after-poppet for each parts of supporting chair device; Steering control device mainly comprise left and right operating grip 6,9, flexible connecting member 4 and the many groups guide wheel for supporting or be wound around flexible connecting member 4.
Below the electric wheelchair of first embodiment of the invention is specifically introduced:
One, running gear
As depicted in figs. 1 and 2, the electric wheelchair of first embodiment of the invention, in its running gear, trailing wheel 3 is drivewheel, and the near front wheel 1 and off-front wheel 2 are driven pulley, and brake gear is braked by control the near front wheel 1 and off-front wheel 2.
The near front wheel 1 and off-front wheel 2 are arranged with vertical direction, at an angle to increase the riding stability of electric wheelchair.Trailing wheel 3 is arranged in the vertical direction, is provided with motor and travels to drive trailing wheel 3 in the wheel hub 31 of trailing wheel 3, and then driving electric wheelchair travels.
The brake assemblies (not shown) that brake gear comprises brake lever 21, brake cable 22 and all installs at the near front wheel 1 and off-front wheel 2, the brake assemblies such as brake rubber block, brake rim or brake block that brake assemblies such as bicycle or motorcycle use, brake assemblies is connected in brake lever 21 by brake cable 22, brake lever 21 is fixed on the below of left and right operating grip 6,9 leading section by connecting ring 24, when needs brake, occupant holds brake lever 21, the direction, leading section of its operating grip 6,9 is to the left and right rotated, brake can be realized.The end of left and right operating grip 6,9 is also arranged with grip part 23.
Two, support
In the present embodiment, for connecting the fore-stock of front-wheel, comprising fore-stock girder 7, connecting vertical pole 60, front beam 61 and front longitudinal 62 a pair, preferably, fore-stock girder 7, connection vertical pole 60, front beam 61 and front longitudinal 62 are all in same plane; After-poppet for connecting trailing wheel 3 comprises trailing wheel rotating shaft, rotating shaft socket housing 5, back vent crossbeam 32 and back vent vertical pole 33; And comprise cushion bracket 11, back bracket 15, handrail rotating shaft 16 and backrest connector 18 for the seat support of each parts of supporting chair device; And the main support connecting fore-stock and after-poppet is integrated main support 8.
One main support 8 can select the circle or square pipe, bar or oval tubing and bar that diameter is thicker, and to strengthen the intensity of electric wheelchair entirety, one main support 8 also can be one-body molded with fore-stock.As shown in Figure 1, one main support 8 is angled with level, and this angle is such as 20-30 degree.
As shown in Figure 2, the rear end of the connection vertical pole 60 of fore-stock is fixedly connected on the down either side of (such as welding or riveted joint) one main beam 8; Two front ends connecting vertical pole 60 are welded in the fore-stock girder 7 of U-shaped, a pair front longitudinal 62 is fixedly connected with inside the large U-shaped of fore-stock girder 7, each front longitudinal 62 forms a little U-shaped opening with the side of fore-stock girder 7, and namely the near front wheel 1 and off-front wheel 2 are arranged in described little U-shaped opening.Front beam 61 is fixedly connected with between the end of two front longitudinals 62; The front of front beam 61 is hinged with pedal 14, such as, by hinge, pedal 14 is articulated with front beam 61.The quadrilateral frame that fore-stock girder 7, two front longitudinal 62 and front beam 61 surround, can be used for the accumulator 36 of placing electric wheelchair, accumulator 36 can along fore-stock, main support and after-poppet cabling with the line of the motor in rear-wheel hub 31, if fore-stock, main support and after-poppet are tubing, then also can in the tube chamber of tubing cabling.
The seat support of the electric wheelchair of the embodiment of the present invention will be introduced together with seat unit.
After-poppet comprises trailing wheel rotating shaft, rotating shaft socket housing 5, back vent crossbeam 32 and back vent vertical pole 33, trailing wheel rotating shaft is arranged in rotating shaft socket housing 5, the top of rotating shaft socket housing 5 is fixedly connected on the rear end of one main beam 8, the bottom of the trailing wheel rotating shaft in rotating shaft socket housing 5 is fixedly connected on the middle position, top of back vent crossbeam 32, the below at back vent crossbeam 32 two ends is fixedly connected with two back vent longerons 33 respectively, namely trailing wheel 3 is connected between two back vent longerons 33, and the trailing wheel rotating shaft of trailing wheel 3 is connected to the bottom of back vent longeron 33.Rotating shaft socket housing 5, back vent crossbeam 32 and back vent vertical pole 33 are in same plane, this plane has the sweptback angle of inclination being less than 30 degree, namely become to be less than the angle of 30 degree with vertical direction, also namely rotating shaft socket housing 5 has a sweptback angle of inclination being less than 30 degree, preferably, this angle of inclination is 15 degree.
Three, seat unit and seat support
As depicted in figs. 1 and 2, the electric wheelchair of first embodiment of the invention, its seat unit mainly comprises medicated cushion 10, backrest 12, handrail 13 and pedal 14, and seat support comprises cushion bracket 11, back bracket 15, handrail rotating shaft 16, handrail locating rod 17, backrest connector 18 and front support stand 34, and strengthen the accessory such as boss 20 and lug 19.
Wherein, medicated cushion 10 is in square or rectangular, and that can take out is arranged in cushion bracket 11.Be formed with in the through hole of two lug 19, two lugs 19 and be fixedly connected with (such as welding) below the front end of cushion frame 11 and have inverted U-shaped front support stand 34.As depicted in figs. 1 and 2, the U-shaped two ends of front support stand 34 are connected with the U-shaped two ends of fore-stock girder 7.The front end of one main beam 8 is fixedly connected on bottom the rear end of cushion bracket 11.Therefore, a contact point of two contact points of two lugs 19 and one main beam 8 altogether three contact points define the stable support to cushion bracket 11.
Back bracket 15 is connected to cushion bracket 11 by backrest connector 18, be provided with in one end that backrest connector 18 is connected with cushion bracket 11 and strengthen boss 20, to strengthen the bonding strength between cushion bracket 11 and backrest connector 18, the reinforcement boss 20 extended internally can also play the supporting role to medicated cushion 10 simultaneously.
Handrail rotating shaft 16 and handrail locating rod 17 are all welded in back frame 15, and the position of handrail locating rod 17 is lower than the position of handrail rotating shaft 16.Handrail 13 is pivotable is sheathed on handrail rotating shaft 16, therefore can rotate up along handrail rotating shaft 16, handrail can be lifted, so that the upper and lower wheelchair of occupant in occasions such as the upper and lower wheelchairs of occupant, handrail locating rod 17 for supporting handrail 13, and can prevent handrail 13 to be rotated down.
Pedal 14 is articulated with front beam 61, can pack up and put down.
The seat unit of the electric wheelchair of the embodiment of the present invention, has the advantage that structure simply, easily realizes and cost is low, effectively reduces the cost of whole electric wheelchair; Meanwhile, electric wheelchair of the present invention, also can be the seat unit of high end configuration, medicated cushion, backrest and handrail can be one-body molded, and then seat unit and seat support also can be one-body molded.
Four, steering control device
The steering control device of the electric wheelchair of the embodiment of the present invention, can be but be not limited to following three kinds of embodiments, and that is steering control device of the present invention can be but be not limited to following three embodiments:
The steering control device of the first embodiment:
As shown in Figure 3, the steering control device of first embodiment of the invention mainly comprises four groups of guide wheels and supports the flexible connecting member 4 with guiding by these four groups of guide wheels, and flexible connecting member 4 closes and has some strength.The flexible winding of flexible connecting member 4 but can not flexiblely stretch, preferably steel wire rope, also can be nylon material etc.The diameter of steel wire rope such as can be 2-6mm.Flexible connecting member 4 is wrapped in trailing wheel rotating shaft, rotates drive trailing wheel 3 to turn to by driving trailing wheel rotating shaft.
As shown in Figure 3, four groups of guide wheels be respectively guide wheel 41,51, guide wheel 42,52, guide wheel 43,53 and guide wheel 44,54; The circumferentially all fluted of each guide wheel supports and guide effect to play flexible connecting member 4.
The bottom of rotating shaft socket housing 5, also namely trailing wheel rotating shaft be wound around flexible connecting member 4 position above the left and right sides, be fixedly connected with the brace 45,55 of lamellar respectively, brace 45,55 be fixedly connected with respectively guide wheel 41,51; The flexible connecting member 4 extended from trailing wheel rotating shaft extends described guide wheel 42,52 to forwards after guide wheel 41,51.
As shown in Figure 3, the U-shaped frame 46,56 being fixedly connected with guide wheel 42,52 and guide wheel 44,54 is fixedly connected on rear side of fore-stock girder 7, two upper surfaces of each U-shaped frame all can be used for being fixedly connected with guide wheel with two lower surfaces, and the guide wheel 42,52 in the present embodiment and guide wheel 44,54 are all upper surfaces disposed therein.The flexible connecting member 4 that guide wheel 41,51 extends through guide wheel 42,52 backward before extend to guide wheel 43,53.
As shown in Figure 3, the connecting plate 48,58 being fixedly connected with guide wheel 43,53 is fixedly connected on the inner side of fore-stock girder 7, with guide wheel 43,53 concentric be connected with left operating grip 6 and right operating grip 9, pass through operation left and right operating grip 6,9 to make user to be wound in guide wheel 43,53 along the direction that left and right operating grip 6,9 moves to drive flexible connecting member 4 or to leave guide wheel 43,53, and then drive trailing wheel axis of rotation, realize turning to of electric wheelchair.
The flexible connecting member 4 extended from guide wheel 43,53 extends horizontally to the guide wheel 54,44 of offside after guide wheel 44,54.
Except guide wheel 43,53 is vertically arranged, guide wheel 41,51, guide wheel 42,52 and guide wheel 44,54 all can be horizontally disposed with.With the setting position of each guide wheel in Fig. 3, the winding direction of flexible connecting member 4 on guide wheel both can be the order according to guide wheel 41, guide wheel 42, guide wheel 43, guide wheel 44, guide wheel 54, guide wheel 53, guide wheel 52, guide wheel 51, also can according to the order of guide wheel 41, guide wheel 44, guide wheel 43, guide wheel 42, guide wheel 52, guide wheel 53, guide wheel 54, guide wheel 51.
For preventing flexible connecting member 4 from skidding relative to guide wheel 43,53, the front end of guide wheel 43,53 is respectively arranged with the hold-down screw 47,57 of fixing flexible connector 4.Being skid for preventing equally, trailing wheel rotating shaft being also provided with the hold-down screw 49,59 of fixing flexible connector 4.
The steering control device of the second embodiment:
As shown in figure 12, the steering control device of second embodiment of the invention, its guide wheel is all identical with the steering control device of the first embodiment with arranging of flexible connecting member.With the steering control device of the first embodiment unlike, flexible connecting member 4 also non-immediate is set in trailing wheel rotating shaft, but in trailing wheel rotating shaft first sheathed guide wheel 40, through hole 50 shown on guide wheel 40 is for fixing trailing wheel rotating shaft, flexible connecting member 4 is wrapped on guide wheel 40, the drive of flexible connecting member 4 pairs of trailing wheel rotating shafts can be made more reliable, and preferably, flexible connecting member 4 can be wound around a circle on guide wheel 40.
For preventing flexible connecting member 4 from skidding relative to guide wheel 40, the front end of guide wheel 43,53 is respectively arranged with fixing flexible connector 4 to prevent the hold-down screw 49,59 of flexible connecting member 4.
The steering control device of the 3rd embodiment:
As shown in figure 13, the steering control device of third embodiment of the invention, its guide wheel 40, guide wheel 42,52, guide wheel 43,53, guide wheel 44,54 and flexible connecting member 4 arrange all identical with the steering control device of the second embodiment.With the steering control device of the second embodiment unlike, eliminate guide wheel 41,51, the flexible connecting member 4 extended from guide wheel 40 directly extends to guide wheel 42,52, and the present embodiment can make the structure of steering control device simplify further.
When needing to turn in electric wheelchair driving process, as turned left, then need to pull back left operating grip 6, the right operating grip 9 of driven forward, make flexible connecting member 4 moving clockwise along guide wheel 43, and move along the counter clockwise direction of guide wheel 53, thus drive trailing wheel rotating shaft with moving clockwise of overlooking, trailing wheel 3 front end is rotated left to right rear end, thus realize electric wheelchair turn left to.As turned right, then need the left operating grip 6 of driven forward, pull back right operating grip 9, flexible connecting member 4 is moved along the counter clockwise direction of guide wheel 43, and moving clockwise along guide wheel 53, thus drive trailing wheel rotating shaft with the counter clockwise direction of overlooking motion, make trailing wheel 3 front end left rear end to right rotation, thus realize electric wheelchair turn right to.The above-mentioned mode of operation when left/right rotation, consistent with the operating habit of people, and simple to operate, can realize very flexibly turning to, incoherent sensation can not be produced, improve ride quality.Further, the steering control device of various embodiments of the present invention all has low, the easy realization of cost and the easy advantage of maintenance.
Below the electric wheelchair of second embodiment of the invention is specifically introduced:
The present embodiment compares the first embodiment, and mainly the electric wheelchair of the present embodiment is a kind of folding electric wheelchair.Its folding characteristic, main support mainly in support and seat support collapsible, in addition, also add the hooking device for the seat unit that locks, remaining seat unit, running gear and steering control device etc. all can be identical with the electric wheelchair of the first embodiment.Below the seat support of the electric wheelchair of the present embodiment, main support and hooking device is specifically introduced.
One, seat support
As shown in Fig. 6-Figure 13, in the present embodiment, backrest connector 18 is no longer direct welding with the annexation of back bracket 15, but back bracket 15 is articulated with backrest connector 18, rotates when folding to enable back bracket 15 to the direction of cushion bracket 11.Preferably, jointed shaft 98 can be worn at the end of backrest connector 18, by lug, back bracket 15 is articulated with rotating shaft 98, and limit back bracket by backstop locating part and opening the follow-up continuous rotation that puts in place.
In addition, front support stand 34 is also no longer be directly welded in fore-stock girder 7, but two front wheel members 35 are vertically set respectively in two U-shaped ends of fore-stock girder 7, two of front support stand 34 U-shaped ends are hinged on the top of front wheel members 35 respectively by jointed shaft 92.Further, be also no longer the relation of welding between bracing frame 34 with lug 19, but bracing frame 34 can rotate in the connecting hole of lug 19.
The annexation of seat support and main support also changes, and will be introduced after having introduced main support.
Two, main support
In the present embodiment, main support is divided into two groups, and one group is the lower longeron 80 of inner side, another group be outside by vertical pole to 72, the 73 hinged vertical pole groups formed, lower longeron 80 and the vertical pole in vertical pole group to 72 by self-lock rod 77 hinged and top-bottom cross.Lower longeron 80 can select the material identical with the one main support 8 of previous embodiment, and just the diameter of its material can be slightly less than one main support 8.
The front end of lower longeron 80 is articulated with cushion bracket 11, rear end is then articulated with rotating shaft socket housing 5, in the position of the close bottom of rotating shaft socket housing 5, symmetrically be provided with connector 81 under a countershaft, under rotating shaft the top of connector 81 be equally symmetrical be provided with for connect vertical pole to 73 rotating shaft upper connector 74, under rotating shaft, the below of connector 81 is then the brace 45,55 be symmetrical set.
Under rotating shaft, connector 81 passes through the hinged lower longeron 80 of through shaft 97.And on rotating shaft upper connector 73, then by the hinged vertical pole of through shaft 96 to 73 rear end.
The front end of lower longeron 80 is then articulated with the tail end of cushion bracket 11 by jointed shaft 94, jointed shaft 94 can be also through shaft.
Vertical pole is articulated with vertical pole to 72 to 73 front ends by through shaft 95, vertical pole to 72 middle part, lower longeron 80 is articulated with by self-lock rod 77, the vertical pole that the front end of vertical pole to two vertical poles of 72 is then fixedly connected on fore-stock rear end respectively to 71 two vertical poles, vertical pole is be fixedly connected on fore-stock girder 7 to the front end of 71.
Three, hooking device
In the present embodiment, hooking device is for when electric wheelchair is in using state, and cushion bracket 11 is fixed on sturdy lower longeron 80, the unstable phenomenon in order to avoid seat unit is in operation.
As shown in Fig. 9-Figure 13, in the position of the rear end central authorities of cushion bracket, the namely top of jointed shaft 94 position, weld the extension device of horizontal-extending backward, extension device can be made up of a top board 82 and biside plate 83, side plate 83 end of extension device is equipped with rotating shaft 90, pivotablely in the two axial ends of rotating shaft 90 is provided with a pair roughly S-shaped Self-locking hanging hook 89, and a pair Self-locking hanging hook 89 is fixed together by top board 87.Self-locking hanging hook 89 when lock-out state, be locked in lower longeron 80 on self-lock rod 77 and vertical pole to 72 vertical pole between.
Outside above-mentioned supporting structure, left and right operating grip 6,9 can rotate around the axle center 99 of guide wheel 43,53, therefore also can fold, and handrail 13 can rotate around handrail rotating shaft 16, thus also can fold.
The folding process of the electric wheelchair of second embodiment of the invention is as follows:
Before carrying out folding, first remove the lock-out state of the Self-locking hanging hook 89 of hooking device.
Again the axle center 99 of left and right operating grip 6,9 around guide wheel 43,53 is rotated backward, fold.Handrail 13 rotates to backrest 12 direction around handrail rotating shaft 16, folds, and back bracket 15 is rotated forward around jointed shaft 98 and folds.
Then, main support is folded, in fact, main support is former and later two four-bar linkage structures, jointed shaft 94 under the pin joint that last quadric chain is formed with lug 34 by jointed shaft 92, front support stand 34, cushion bracket 11 and self-lock rod 77 formed, upwards pull cushion rack 11, front support stand 34 and cushion bracket 11 are rotated to the direction being parallel to fore-stock girder 7, forms folded state as shown in fig. 13 that.
A rear quadric chain formed by through shaft 95, through shaft 96, through shaft 97 and self-lock rod 77, under the drive of power upwards pulling cushion rack 11, vertical pole is also rotated to the direction being parallel to fore-stock girder 7 73 and after-poppet, trailing wheel 3 is recovered between the near front wheel 1 and off-front wheel 2, forms folded state as shown in fig. 13 that.
As from the foregoing, the electric wheelchair of second embodiment of the invention, has folding advantage, to save the land used placing wheelchair.Further, the electric wheelchair of second embodiment of the invention, its folding operation is convenient, and the space taken after folding obviously reduces.
Beneficial effect of the present invention is, compared with the prior art, steering control device of the present invention and electric wheelchair of the present invention have the following advantages:
1, cost is low, steering control device of the present invention, and its steering adopts mechanical steering, is combined, reduce the cost of steering control device by the simple mechanical organ such as guide wheel, flexible connecting member.
2, turn to steadily, steering control device of the present invention is pure frame for movement, also no longer includes incoherent sensation of electric steering system, improve the stationarity turned to when therefore turning to.
3, motility and operation ease, when needs turn to, only needs according to daily habits, and the operating grip of the operation left and right sides, can realize turning to, and is convenient to user operation.
Technical scheme of the present invention is disclosed as above by preferred embodiment.The change that those skilled in the art do when should recognize the scope and spirit of the present invention disclosed in the claim do not departed from appended by the present invention and retouching, within the protection domain all belonging to claim of the present invention.
Claims (10)
1. an electric wheelchair, it is characterized in that, described electric wheelchair comprises support, running gear, seat unit and steering control device, described support comprises fore-stock, after-poppet and the seat support for supporting described seat unit, described running gear comprises a pair front-wheel being arranged at described fore-stock and the trailing wheel with electric driver being arranged at described after-poppet, and described steering control device comprises:
The closed flexible connecting member with some strength and be connected to a pair first guide wheels of described support, a pair second guide wheels and a pair the 3rd guide wheels;
Described flexible connecting member is supported by described a pair first guide wheels, described a pair second guide wheels and described a pair the 3rd guide wheels and is led, and described flexible connecting member is also wound in the trailing wheel rotating shaft of described trailing wheel to drive described rear-axle steering;
Described a pair first guide wheels, the described flexible connecting member extended from described trailing wheel rotating shaft extends out to forward described first guide wheel, before described first guide wheel is backward, extend to described second guide wheel;
Described a pair second guide wheels, the described flexible connecting member extended from described second guide wheel extands rearward to described 3rd guide wheel, with described second guide wheel concentric be connected with a pair operating grip, be arranged at the left and right sides of described seat unit respectively, described second guide wheel is driven to rotate to make user by the described operating grip of the reverse operating left and right sides, to drive described flexible connecting member to be wound in described second guide wheel along the direction that described operating grip moves, realize turning to of described electric wheelchair;
Described a pair the 3rd guide wheels, the described flexible connecting member extended from described 3rd guide wheel extends horizontally to described 3rd guide wheel of offside.
2. electric wheelchair as claimed in claim 1, it is characterized in that, described steering control device also comprises a pair four guide idlers, and described four guide idler is fixedly connected on the position of described after-poppet top near described trailing wheel rotating shaft; The described flexible connecting member extended from described trailing wheel rotating shaft extends described first guide wheel to forwards after described four guide idler;
Described second guide wheel is vertically arranged, described first guide wheel and described four guide idler are horizontally disposed with, described 3rd guide wheel is arranged perpendicular to described second guide wheel, and described 3rd guide wheel is positioned at below described first guide wheel, and described first guide wheel and described 3rd guide wheel are arranged on same U-shaped frame.
3. electric wheelchair as claimed in claim 2, it is characterized in that, described trailing wheel rotating shaft is provided with the first hold-down screw that fixing described flexible connecting member skids relative to described trailing wheel rotating shaft to prevent described flexible connecting member, described second guide wheel is provided with the first hold-down screw that fixing described flexible connecting member skids relative to described second guide wheel to prevent described flexible connecting member.
4. electric wheelchair as claimed in claim 3, it is characterized in that, described trailing wheel is the trailing wheel being provided with electric driver.
5. electric wheelchair as claimed in claim 2, it is characterized in that, described flexible connecting member is the steel wire rope of 2-6mm.
6. electric wheelchair as claimed in claim 2, is characterized in that, described support also comprises the main support connecting described fore-stock and described after-poppet, and described main support is and the integrated main support of described fore-stock or folding main support.
7. electric wheelchair as claimed in claim 6, it is characterized in that, described trailing wheel rotating shaft has the sweptback angle of inclination being less than 30 degree.
8. electric wheelchair as claimed in claim 7, it is characterized in that, described angle of inclination is 15 degree.
9. for a steering control device for electric wheelchair, it is characterized in that, described electric wheelchair comprises support, running gear, seat unit and steering control device, and described steering control device comprises:
The closed flexible connecting member with some strength and be connected to a pair first guide wheels of support of described electric wheelchair, a pair second guide wheels and a pair the 3rd guide wheels;
Described flexible connecting member is supported by described a pair first guide wheels, a pair second guide wheels and a pair the 3rd guide wheels and is led, and described flexible connecting member is also wound in the trailing wheel rotating shaft of the trailing wheel of described electric wheelchair to drive described rear-axle steering;
Described a pair first guide wheels, the described flexible connecting member extended from described trailing wheel rotating shaft extends out to forward described first guide wheel, before described first guide wheel is backward, extend to described second guide wheel;
Described a pair second guide wheels, the described flexible connecting member extended from described second guide wheel extands rearward to described 3rd guide wheel, with described second guide wheel concentric be connected with a pair operating grip, be arranged at the left and right sides of described seat unit respectively, described second guide wheel is driven to rotate to make user by the described operating grip of the reverse operating left and right sides, to drive described flexible connecting member to be wound in described second guide wheel along the direction that described operating grip moves, realize turning to of described electric wheelchair;
Described a pair the 3rd guide wheels, the described flexible connecting member extended from described 3rd guide wheel extends horizontally to described 3rd guide wheel of offside.
10. as claimed in claim 9 for the steering control device of electric wheelchair, it is characterized in that, described support comprises fore-stock, after-poppet and the seat support for supporting described seat unit, described steering control device also comprises a pair four guide idlers, and described four guide idler is fixedly connected on the position of described after-poppet top near described trailing wheel rotating shaft; The described flexible connecting member extended from described trailing wheel rotating shaft extends described first guide wheel to forwards after described four guide idler; Described second guide wheel is vertically arranged, described first guide wheel and described four guide idler are horizontally disposed with, described 3rd guide wheel is arranged perpendicular to described second guide wheel, and described 3rd guide wheel is positioned at below described first guide wheel, and described first guide wheel and described 3rd guide wheel are arranged on same U-shaped frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210150179.XA CN102697609B (en) | 2012-05-15 | 2012-05-15 | Electric wheelchair and steering control device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210150179.XA CN102697609B (en) | 2012-05-15 | 2012-05-15 | Electric wheelchair and steering control device thereof |
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| Publication Number | Publication Date |
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| CN102697609A CN102697609A (en) | 2012-10-03 |
| CN102697609B true CN102697609B (en) | 2015-04-22 |
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| CN201210150179.XA Expired - Fee Related CN102697609B (en) | 2012-05-15 | 2012-05-15 | Electric wheelchair and steering control device thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103126828A (en) * | 2013-02-16 | 2013-06-05 | 周兴强 | Portable folding wheelchair |
| CN105434119B (en) * | 2014-09-01 | 2017-06-30 | 特瑞国际开发有限公司 | Dual drive wheelchair |
| CN104274285A (en) * | 2014-09-27 | 2015-01-14 | 吴玲玲 | Wheel chair |
| WO2016179305A1 (en) * | 2015-05-04 | 2016-11-10 | Orbis Wheels, Inc. | Centerless wheel assembly |
| CN109157346B (en) * | 2018-10-10 | 2024-02-27 | 安维车件(厦门)有限公司 | Wire lifting device and wheelchair using same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201879925U (en) * | 2010-11-02 | 2011-06-29 | 金祥曙 | Electric wheelchair |
| CN202682211U (en) * | 2012-05-15 | 2013-01-23 | 博尔塔拉蒙古自治州万力源科技开发有限责任公司 | Electric wheelchair and steering control device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4195238B2 (en) * | 2002-05-24 | 2008-12-10 | 康延 半田 | Front wheel drive wheelchair |
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2012
- 2012-05-15 CN CN201210150179.XA patent/CN102697609B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201879925U (en) * | 2010-11-02 | 2011-06-29 | 金祥曙 | Electric wheelchair |
| CN202682211U (en) * | 2012-05-15 | 2013-01-23 | 博尔塔拉蒙古自治州万力源科技开发有限责任公司 | Electric wheelchair and steering control device thereof |
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