CN109549795A - A kind of wheelchair - Google Patents

Abstract

The embodiment of the invention discloses a kind of wheelchairs, the wheelchair includes pedestal, the seat being set on pedestal, the handrail being set on seat, the horse block for being set to pedestal front, two front-wheels and two rear-wheels for being connected to pedestal two sides, and the wheelchair further includes that foot is used to trample with steering mechanism and the shockproof mechanism of the driving mechanism and use hand control front-wheel steer that drive rear-wheel to rotate forward.The wheelchair of the embodiment of the present invention is applicable in the normal aging people of the hemiplegic patient of each age group and non-hemiplegia under no cognitive disorder.

Description

A kind of wheelchair

Technical field

The present embodiments relate to the field of medical instrument technology, and in particular to a kind of wheelchair.

Background technique

Outside Now Domestic in wheelchair market, the labour that each Design modelling thinking is partial to optimize user is participated in, Many designers save physical consumption by designing various high-end electric wheelchairs, increase wheelchair continuation of the journey, reduce and use wheelchair The physical efficiency of people is paid.It is even external the various new concept wheelchairs that wheelchair is manipulated with brain electricity occur.This kind of electric wheelchair is non- Although often convenient, it has liberated limbs constraint, and high expense makes many crowds in need of China hang back.

It can not deny that electric wheelchair has its benefit, its applicable group is extensive, than traditional manpower wheelchair in terms of continuation of the journey It is outstanding.And manpower wheelchair is cheap, is the wheelchair-style that current most people uses, but both hands driving wheelchair needs to expend very The distance of more physical efficiencys, enforcement will not be too far, and both hands hand is easy injury etc..The target user of wheelchair be mostly the elderly and Disabled person, their body function are good unlike normal person.If selection uses electric wheelchair, although electric wheelchair helps people Save physical consumption, while also allowing produce using its people and being reluctant dynamic inertia.

That as the saying goes is good: exercise makes one strong.People once no longer moves, and physical function will dramatic decrease.Many old men Because fearing to fall down and be reluctant to go out, or even be required to lie on a bed and other people allowed to serve, so get off, not out one month they Physical function will dramatic decrease, muscular atrophy, blood circulation slows down, and osteoporosis, long-term bed person will lead to orthostatic low Blood pressure, the various complication of pulmonary infection etc. start to be burdened with ...

The characteristics of China's medical science of recovery therapy is very popular in recent years, the subject first is that emphasizing to overcome function to hinder by moving Hinder, to improve physical condition, however the popularization of electric wheelchair and continuing to optimize is not inconsistent with rehabilitation theory undoubtedly, patient and old People will lead to physical function decline to electric wheelchair for a long time, is unfavorable for the rehabilitation of doctor, also reduces the treatment of patient Desire.

By inventor's empirical discovery, no matter many hypothyroid the elderlys, cerebrovascular accident hemiplegia, patients with amputation etc. People has the experience for using wheelchair.The wheelchair that they use, which sums up, can be divided into traditional manpower driving wheelchair and electric wheelchair Two major classes.The author's discovery, using the people of traditional push chairs, the most of and both hands of hope not on one's own account drive wheelchair, the push wheel of exaggeration Chair movement and physical consumption, so that they are more willing to have the people for helping them to drive wheelchair behind, this people can make house People is also possible to nurse, is also possible to nurse .. and such as hemiplegic patient, be want it is helpless by oneself driving wheelchair (most hemiplegic patient's one hand driving wheelchairs will lead to original place and turn-take, and have the honor to be successfully recovered expert or grasped drive if suffering from hand The mode of wheelchair, the speed of driving and the high participation of trick, so that they are reluctant having learned wheelchair driving Meaning can use alone wheelchair), so that the conclusion obtained is most of people using traditional push chairs, even if how excellent wheelchair is again Changing transformation, they perhaps will not seldom go to be more that family members or nurse is allowed to carry out using them, this has not only limited to him Sphere of action, also make they body lack effectively take exercise, thus directly result in muscle decline, lead to physical function indirectly Decline, while also having defeated their confidence.The elderly similarly to be ridden instead of walk using electric wheelchair is used for a long time electric wheelchair and ridden instead of walk Physical function decline is also resulted in, a bad nausea circulation is generated.

Instantly also there are many simultaneous wheelchair of riding instead of walk of functional training for being directed to various patients, inventor has searched many in wheelchair market Wheelchair sales platform has also searched domestic and international various intention concept wheelchair designs, it is found that its chair style is various, Various Functions, but For being summed up, the design of all kinds of wheelchairs is divided into two classes mostly, first is that ignoring physical function situation common electronic generation in the market It walks wheelchair and overemphasizes the wheelchair of functional training the other is ignoring the function of riding instead of walk substantially of wheelchair, this wheelchair is more common in respectively Class auxiliary implement contest, does not there is good promotion and popularization.So body function, which is taken exercise and exercised, rides functional wheelchair instead of walk simultaneously It is not used by people in need really, inventor does not search suitable hemiplegic patient or body in all kinds of wheelchair sales platforms yet A kind of functional training of body hypofunction the elderly is simultaneous to ride instead of walk and the suitable wheelchair of price, therefore needs to invent this kind of wheelchair.

Summary of the invention

For this purpose, the embodiment of the present invention provides a kind of wheelchair, wheelchair provided in an embodiment of the present invention facilitates hemiplegic patient and non- The normal aging people activity of hemiplegia.

To achieve the goals above, embodiments of the present invention provide the following technical solutions:

In the first aspect of embodiments of the present invention, a kind of wheelchair is provided, the wheelchair includes pedestal, is set to Seat on pedestal, the handrail being set on seat, the horse block for being set to pedestal front, two front-wheels for being connected to pedestal two sides With two rear-wheels, the wheelchair further includes before using foot to trample with the driving mechanism that drives rear-wheel to rotate forward and using hand control Rotate to steering mechanism.

Optionally, the driving mechanism includes the first pedal, the first rack gear, the first rack gear cylinder, spring, first rotating shaft, the One gear, pawl, handle ratchet wheel, the first sprocket wheel, the second sprocket wheel and the first chain, the first rack gear cylinder tilt upward after phase even It is connected on horse block and downside is provided with strip opening, the spring is set in the first rack gear cylinder, first tooth Item, which protrudes into the first rack gear cylinder to be connected with the spring and be open with tooth side from the strip, to be stretched out, and described first steps on Plate is vertically connected at the top of first rack gear, and the vertical first rack gear length direction of the first rotating shaft is horizontally rotatably set It being placed on the horse block, the first gear coaxial sleeve is set to the first rotating shaft periphery and is meshed with first rack gear, The pawl is set to the periphery of the first rotating shaft side, the handle ratchet wheel be sheathed on the outside of the pawl and with the pawl It matches, first sprocket coaxiality is connected to the handle ratchet wheel periphery, and second sprocket wheel is coaxially connected with the rear-wheel, institute The first sprocket wheel is stated to be sequentially connected by first chain and second sprocket wheel.

Optionally, the steering mechanism includes handle, handlebar, first bevel gear, first bevel gear axis, the second cone tooth Wheel, second bevel gear axis, third sprocket wheel, the second chain, the 4th sprocket wheel, second gear, the second shaft, the second rack gear and universal wheel Fixed frame, the handlebar pass through the handrail and upper end connection handle, lower end and the first bevel gear axis along the vertical direction One end be vertically connected, the first bevel gear is set in the other end of the first bevel gear axis, the second bevel gear with The first bevel gear is meshed, and the upper end of the second bevel gear axis and the second bevel gear are coaxially connected, and lower end is downward Height where extending to seat, the third sprocket coaxiality are set in the lower end of the second bevel gear axis, the 4th sprocket wheel It is set in the seat and is connect with the third sprocket wheel by second chain drive, second shaft upper end is protruded into The seat and it is connected with the 4th sprocket coaxiality, lower end extends downwardly, and the second gear coaxial sleeve is set to described second Shaft lower end periphery, the both ends of second rack gear and the inside of the universal wheel fixed frame are hinged, the second gear and institute It states the second rack gear to be meshed, the upper end of the universal wheel fixed frame is connected with the pedestal, and the front-wheel is connected to described universal It takes turns on fixed frame.

Optionally, the wheelchair further includes the second pedal and connecting rod, and the connecting rod is along the axial and first rotating shaft Parallel, second pedal is connected by connecting rod with first pedal.

Optionally, cushion is provided on the seat.

Optionally, the pedestal includes upper backup pad, lower supporting plate and support rod, and the support rod is connected to the upper branch Between fagging and lower supporting plate.

Optionally, the upper backup pad, lower supporting plate and support rod are metal material.

Optionally, the seat is provided with seat back, is provided with handle in the seat back.

Optionally, the driving mechanism is two that two feet of one trampled using a foot or use are trampled.

Optionally, the wheelchair is additionally provided with shockproof mechanism.

Embodiment according to the present invention has the advantages that

The wheelchair of the embodiment of the present invention is applicable in the normal old of the hemiplegic patient of each age group and non-hemiplegia under no cognitive disorder Year people passes through strong leg activity-driven wheelchair and drives and suffers from leg joint activity, can occur in patient's cerebrovascular accident and life entity After sign is stablized, is starting to carry out carrying out rehabilitation intervention and wheelchair driving training to it in early days, there is stimulation proprioception, under induction Limb function improves range of motion, prevents joint of lower extremity contracture, improves the function of ADL, also can increase except the volume in hospitalize Outer treatment time and effect can reduce the implementation of family, hospital and spirit after acquistion wheelchair operation technical ability and hemiplegia transfer techniques Burden, can also promote limbs, and cardio-pulmonary function improves, and increase patient's self-confidence, patient can be accompanied in family members or security context under Outdoor or indoor activity, the unhealthy emotion after mediating illness are carried out alone.Suffering from leg-training in hemiplegic patient can induce and by assessment It when can participate in wheelchair driving, can start to carry out driving training with suffering from leg, enable to suffer from leg and participate in wheelchair driving；For old age People, can be slightly modified in wheelchair driving, all increases driving in wheelchair two sides, encourages long-term bed, because there is wrestling risk to fear The elderly on foot carries out functional training, had both alleviated wrestling risk, and had tempered body, and had also increased the safety of trip；It is single Purely mechanical is ridden instead of walk wheelchair, and price is lower than electric wheelchair, can also play exercise effect, and the electric wheelchair high compared to expense is deposited It is matched with many household demands instantly, compared to the concept wheelchair of domestic and international various non-volume productions, the practicality is clearly.Simply Practical transmission turning device, it is easy to repair.Wheelchair is also the equipment that recovery function is taken exercise simultaneously, can carry out exercise for power, Range of motion is maintained, contracture is prevented, improves cardio-pulmonary function.

Detailed description of the invention

It, below will be to embodiment party in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art Formula or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description is only It is merely exemplary, it for those of ordinary skill in the art, without creative efforts, can also basis The attached drawing of offer, which is extended, obtains other implementation attached drawings.

Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for Those skilled in the art understands and reads, and is not intended to limit the invention enforceable qualifications, therefore does not have technical Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the function of the invention that can be generated Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.

Fig. 1 is the structural schematic diagram for the wheelchair that one embodiment of the invention provides；

Fig. 2 is the part-structure figure for the driving mechanism that another embodiment of the present invention provides；

Fig. 3 is the part-structure figure for the driving mechanism that another embodiment of the present invention provides；

Fig. 4 is the structural schematic diagram for the steering mechanism that another embodiment of the present invention provides；

Fig. 5 is the connection schematic diagram of first bevel gear and second bevel gear that another embodiment of the present invention provides.

In figure:

1 pedestal, 2 seat, 3 handrail

4 horse block, 5 rear-wheel, 6 front-wheel

101 first pedal, 102 first rack gear, 103 first rack gear cylinder

104 spring, 105 first rotating shaft, 106 first gear

107 pawl, 108 handle ratchet wheel, 109 first sprocket wheel

110 second 111 first chain of sprocket wheel, 112 cushion

201 handle, 202 handlebar, 203 first bevel gear

204 first bevel gear axis, 205 second bevel gear, 206 second bevel gear axis

The 4th sprocket wheel of 207 208 second chain 209 of third sprocket wheel

210 second gear, 211 second rack gear, 212 second shaft

213 universal wheel fixed frame, 41 baffle

Specific embodiment

Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.

The term of cited such as "upper", "lower", "left", "right", " centre ", is merely convenient to describe in this specification Be illustrated, rather than to limit the scope of the invention, relativeness is altered or modified, and is changing technology without essence It inside holds, when being also considered as the enforceable scope of the present invention.

The embodiment of the present invention provides a kind of wheelchair, as shown in Figure 1, the wheelchair includes pedestal 1, is set on pedestal 1 Seat 2, the handrail 3 being set on seat 2, the horse block 4 for being set to 1 front of pedestal, two front-wheels 6 for being connected to 1 two sides of pedestal With two rear-wheels 5, the wheelchair further includes using foot to trample to control with the driving mechanism and use hand that drive rear-wheel 5 to rotate forward The steering mechanism that front-wheel 6 turns to.Wheelchair of the embodiment of the present invention, which steps on driving mechanism by single foot, makes wheelchair advance, and singlehanded control Steering mechanism is turned to, and can be difficult to drive wheelchair or four limbs function alone for most not hemiplegic patients of cognitive disorder Decline cannot manipulate the old man of wheelchair very well, liberate guardian's both hands, increase without cognitive disorder hemiplegic patient's freedom of action degree, subtract Few patient is in the action relying on guardian, is giving patient's self-confidence in the action, by being good for side list leg wheelchair activities, drives and suffers from Side leg joint motion, one of early intervention mode after making patients with cerebral apoplexy stationary phase pass through association response and pass Section activity squeezes stimulation proprioception, and leg functional rehabilitation is suffered from promotion, so that patient has more outside the treatment times such as hospital or family More therapeutic stimulations.Except in addition to hemiplegic patient, small size be transformed of wheelchair is also applied for old leg and degenerates merely crowd, so that In the case where walking has security risk, leg muscle exercise also can be carried out using wheelchair, so as to improve range of motion, prevent Only muscular atrophy promotes internal microcirculation, reduces wrestling risk.For hemiplegic patient, simultaneously by strong leg activity-driven wheelchair Leg joint activity is suffered from drive, can be occurred in patient's cerebrovascular accident and after vital signs stable, start to carry out it in early days into Row rehabilitation intervention and wheelchair driving training, have stimulation proprioception, induce lower limb function, improve range of motion, under prevention The limb contracture of joint, improves the function of ADL, also can increase except in hospitalize the additional treatment time and effect, in acquistion wheelchair After operative skill and hemiplegia transfer techniques, it can reduce the implementation of family, hospital and mental burden, can also promote limbs, cardio-pulmonary function changes It is kind, increase patient's self-confidence, patient can be accompanied in family members or security context under carry out outdoor or indoor activity alone, mediate trouble Unhealthy emotion after being ill.When hemiplegic patient, which suffers from leg-training, can induce and can participate in wheelchair driving by assessment, can start with trouble Leg carries out driving training, enables to suffer from leg and participates in wheelchair driving；, can be slightly modified in wheelchair driving for the elderly, it is taking turns Chair two sides all increase driving, encourage long-term bed, because there is wrestling risk to fear that the elderly on foot carries out functional training, both mitigate Wrestling risk, has tempered body, also increases the safety of trip.

Driving mechanism can use various structures and type in the embodiment of the present invention, make wheelchair to realize that single foot steps on driving Subject to advance, as shown in Figure 1-3, the driving mechanism includes the first pedal 101, the first rack gear 102, the first rack gear cylinder 103, bullet Spring 104, first rotating shaft 105, first gear 106, pawl 107, handle ratchet wheel 108, the first sprocket wheel 109, the second sprocket wheel 110 and first Chain 111, the first rack gear cylinder 103, which tilts upward, to be connected on horse block 4 after phase and downside is provided with strip opening, The spring 104 is set in the first rack gear cylinder 103, first rack gear 102 protrude into the first rack gear cylinder 103 with The spring 104, which is connected and is open with tooth side from the strip, to be stretched out, and first pedal 101 is vertically connected at described the The top of one rack gear 102, vertical first rack gear, 102 length direction of the first rotating shaft 105 are horizontally rotatably set to described On horse block 4,106 coaxial sleeve of first gear is set to 105 periphery of first rotating shaft and nibbles with 102 phase of the first rack gear It closes, the pawl 107 is set to the periphery of 105 side of first rotating shaft, and the handle ratchet wheel 108 is sheathed on the pawl 107 It outside and being matched with the pawl 107, first sprocket wheel 109 is coaxially connected in 108 periphery of handle ratchet wheel, and described second Sprocket wheel 110 with the rear-wheel 5 is coaxial is connected, first sprocket wheel 109 passes through first chain 111 and second sprocket wheel 110 transmission connections.When specifically used, move downward the first rack gear along the first rack gear cylinder by single foot pushes pedals, while the One rack gear is engaged with first gear, and driving first gear is rotated around first rotating shaft, and then with pawl, handle ratchet wheel and the first sprocket wheel Rotation, and the first sprocket wheel realizes that wheelchair advances by first the second sprocket wheel of chain-driving and rear wheel.And when pedal unclamps Afterwards, it being under spring action, the first rack gear and pedal reset, and in rotating backward and can not be driven by pawl due to first rotating shaft Ratchet wheel, the case where making wheelchair not generate retrogressing.The driving mechanism of the present embodiment is simple and convenient, and driving effect is good.This reality The driving mechanism patient for applying example needs to do work when stepping on down, and pedal can up rebound when loose foot, protects ankle-joint Appropriate dorsiflexion position is held, because it is mainly tibialis anterior that contraction muscle group is stretched on instep, tibialis anterior is easy fatigue as small muscle group, so main Triceps are leaned on to shrink acting, muscular fatigue degree can be reduced by carrying out workmanship with big muscle group, extend acting distance.

Steering mechanism can use various structures and type in the embodiment of the present invention, and the singlehanded control of realization of being subject to turns to, As illustrated in figures 4-5, the steering mechanism include handle 201, handlebar 202, first bevel gear 203, first bevel gear axis 204, Second bevel gear 205, second bevel gear axis 206, third sprocket wheel 207, the second chain 208, the 4th sprocket wheel 209, second gear 210, the second shaft 213, the second rack gear 211 and universal wheel fixed frame 212, the handlebar 202 pass through described along the vertical direction Handrail 3 and upper end connect handle 201, lower end and one end of the first bevel gear axis 204 and are vertically connected, the first bevel gear 203 are set in the other end of the first bevel gear axis 204, and the second bevel gear 205 is nibbled with 203 phase of first bevel gear It closes, the upper end of the second bevel gear axis 206 and the second bevel gear 205 are coaxially connected, and lower end extends downward into 2 institute of seat In height, the third sprocket wheel 207 is coaxially set in the lower end of the second bevel gear axis 206, the 4th sprocket wheel 209 setting It is sequentially connected in the seat 2 and with the third sprocket wheel 207 by second chain 208, in second shaft 213 End protrude into the seat 2 and with the 4th sprocket wheel 209 is coaxial is connected, lower end extends downwardly, 210 coaxial sleeve of second gear Set on 213 lower end periphery of the second shaft, the inside at the both ends of second rack gear 211 and the universal wheel fixed frame 212 Hingedly, the second gear 210 is meshed with second rack gear 211, the upper end and the bottom of the universal wheel fixed frame 212 Seat 1 is connected, and the front-wheel 6 is connected on the universal wheel fixed frame 212.When specifically used, handle is pulled by effect Drive handlebar rotation, and then drive first bevel gear axis rotation, then second bevel gear, second bevel gear axis, third sprocket wheel, Second chain, the 4th sprocket wheel, second gear, the rotation of the second shaft, so that the second rack gear of driving moves left and right, and due to the second tooth Both ends and universal wheel fixed frame (front side or rear side) hingedly, can be such that universal wheel fixed frame rotates around its shaft, realize wheelchair It turns to, it is convenient and efficient, and also the steering mechanism can also use as brake, and when the deflection of universal wheel fixed frame is excessive, front-wheel is It is perpendicular with direction of advance, realize braking function, naturally it is also possible to the conventional brake part such as brake block, the present embodiment be separately provided It repeats no more.In addition, the handle 201 of steering mechanism, handlebar 202, first bevel gear 203, first bevel gear axis 204, second Bevel gear 205, second bevel gear axis 206, third sprocket wheel 207 can be set to symmetrically arranged two, thus convenient for users to Selection, and handle can be it is detachable, if it is to change sides, can remove and be directly attached to the other side, with other side manipulation side To suitable for various hemiplegic patients.

It can also be moved in order to facilitate the foot of hemiplegia state, the wheelchair can also be described including the second pedal and connecting rod Connecting rod edge is axial parallel with the first rotating shaft 105, and second pedal passes through connecting rod and 101 phase of the first pedal Even, thus a foot trample the first pedal it is downward when, the second pedal also simultaneously downwards drive another foot movement, suffer from hemiplegia Person improves rehabilitation efficacy.

In addition to above-mentioned two mechanism, the wheelchair of embodiment can have other conventional components, for example, on the seat 2 It is provided with cushion 6.The pedestal 1 includes upper backup pad, lower supporting plate and support rod, and the support rod is connected to the upper support Between plate and lower supporting plate.The upper backup pad, lower supporting plate and support rod are metal material.The seat 2 is provided with seat It carries on the back, is provided with handle in the seat back, baffle 41 can be set at left and right sides of horse block 4.The present embodiment no longer specifically repeats.

In the embodiment of the present invention, the driving mechanism can be one trampled using a foot or be trampled using two feet Two.If one, then the pedal of the driving mechanism and the handle of steering mechanism should be located at wheelchair the same side, in order to hemiplegia Patient is turned to and is driven using the hand and foot of the same side, if two, then the patient of non-hemiplegia or hemiplegia side is suitble to have one The patient for determining function uses.

In the embodiment of the present invention, the wheelchair is additionally provided with shockproof mechanism, and shockproof mechanism can be this fields such as spring skill Mechanism known to art personnel, it is ensured that comfort prevents from jolting.

Although above having used general explanation and specific embodiment, the present invention is described in detail, at this On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore, These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.

Claims (10)

1. a kind of wheelchair, which is characterized in that the wheelchair includes pedestal (1), the seat (2) being set on pedestal (1), is set to Handrail (3) on seat (2), the horse block (4) for being set to pedestal (1) front, two front-wheels (6) for being connected to pedestal (1) two sides With two rear-wheels (5), the wheelchair further includes that foot is used to trample with the driving mechanism that drives rear-wheel (5) to rotate forward and using one The steering mechanism that hand control front-wheel (6) of side turns to.

2. wheelchair according to claim 1, which is characterized in that the driving mechanism includes the first pedal (101), the first tooth Item (102), the first rack gear cylinder (103), spring (104), first rotating shaft (105), first gear (106), pawl (107), interior spine Wheel (108), the first sprocket wheel (109), the second sprocket wheel (110) and the first chain (111), the first rack gear cylinder (103) are tilted towards It is connected to after upper phase on horse block (4) and downside is provided with strip opening, the spring (104) is set to first tooth In bar cylinder (103), first rack gear (102) is protruded into the first rack gear cylinder (103) to be connected and band with the spring (104) Tooth side is open from the strip to be stretched out, and first pedal (101) is vertically connected at the top of first rack gear (102) End, vertical first rack gear (102) length direction of the first rotating shaft (105) are horizontally rotatably set on the horse block (4), First gear (106) coaxial sleeve is set to the first rotating shaft (105) periphery and is meshed with first rack gear (102), The pawl (107) is set to the periphery of the first rotating shaft (105) side, and the handle ratchet wheel (108) is sheathed on the pawl (107) outside and match with the pawl (107), first sprocket wheel (109) it is coaxially connected in the handle ratchet wheel (108) outside Week, second sprocket wheel (110) with the rear-wheel (5) is coaxial is connected, first sprocket wheel (109) passes through first chain (111) it is sequentially connected with second sprocket wheel (110).

3. wheelchair according to claim 1, which is characterized in that the steering mechanism includes handle (201), handlebar (202), first bevel gear (203), first bevel gear axis (204), second bevel gear (205), second bevel gear axis (206), Three sprocket wheels (207), the second chain (208), the 4th sprocket wheel (209), second gear (210), the second shaft (213), the second rack gear (211) and universal wheel fixed frame (212), the handlebar (202) pass through the handrail (3) and upper end connection hand along the vertical direction Handle (201), lower end and one end of the first bevel gear axis (204) are vertically connected, and the first bevel gear (203) is set in institute The other end of first bevel gear axis (204) is stated, the second bevel gear (205) is meshed with the first bevel gear (203), institute Upper end and the second bevel gear (205) for stating second bevel gear axis (206) are coaxially connected, and lower end extends downward into seat (2) Place height, the third sprocket wheel (207) are coaxially set in the lower end of the second bevel gear axis (206), the 4th sprocket wheel (209) it is set in the seat (2) and is sequentially connected with the third sprocket wheel (207) by second chain (208), institute State the second shaft (213) upper end protrude into the seat (2) and with the 4th sprocket wheel (209) is coaxial is connected, lower end extends downwardly, Second gear (210) coaxial sleeve is set to the second shaft (213) lower end periphery, the both ends of second rack gear (211) Hinged with the inside of the universal wheel fixed frame (212), the second gear (210) is meshed with second rack gear (211), The upper end of the universal wheel fixed frame (212) is connected with the pedestal (1), and the front-wheel (6) is connected to the universal wheel and fixes On frame (212).

4. wheelchair according to claim 2, which is characterized in that the wheelchair further includes the second pedal and connecting rod, described Connecting rod edge is axial parallel with the first rotating shaft (105), and second pedal passes through connecting rod and first pedal (101) it is connected.

5. wheelchair according to claim 1, which is characterized in that be provided with cushion (112) on the seat (2).

6. wheelchair according to claim 1, which is characterized in that the pedestal (1) includes upper backup pad, lower supporting plate and branch Strut, the support rod are connected between the upper backup pad and lower supporting plate.

7. wheelchair according to claim 6, which is characterized in that the upper backup pad, lower supporting plate and support rod are metal Material.

8. wheelchair according to claim 1, which is characterized in that the seat (2) is provided with seat back, in the seat back It is provided with handle.

9. wheelchair according to claim 1, which is characterized in that the driving mechanism be one trampled using a foot or Two trampled using two feet.

10. wheelchair according to claim 1, which is characterized in that the wheelchair is additionally provided with shockproof mechanism.