CN208838366U - A kind of pedal wheelchair - Google Patents

Abstract

The utility model discloses a kind of pedal wheelchair, including vehicle frame and wheel, it is connected with transfer and pedal driving device on vehicle frame, wheel is connect with transfer；Pedal driving device includes steamboat, a pair of of swing rod, a pair of of treadle and a pair of of crank；Both feet step down on the pedal of treadle, and both feet front and back is trampled, and so that crank is done complete cycle rotary motion, crank drives steamboat to rotate by freewheel clutch, to drive the movement of entire wheelchair.Two wheels that trammer is connect by the handle rotation of handlebar stem with two rocking bars, two rocking bars are connected by connecting rod, and two wheel steerings is made to realize linkage, and steering procedure is more flexible, safe.The Wheelchair structure is simple, and manufacture is easy, at low cost, has high value of practical and promotional value.

Description

A kind of pedal wheelchair

Technical field

The utility model relates to wheelchair technical field, specially a kind of pedal wheelchair.

Background technique

Wheelchair is the vehicles of leg disabled person indispensability, especially because the old,weak,sick and disabled needs the rehabilitation of people's nurse not The life appliance that can or lack.It is current market sales of and wheelchair in outdoor application when be to be pushed away by other people walkings mostly Dynamic, because wheelchair is relatively elaborate by people's walking promotion, trammer is easy fatigue, and scope of activities is smaller, the speed that should not be gone on a long journey, and walk Degree is very slow, and trammer's cart process is uninteresting, barren.Based on problem above, needs to design a kind of trammer force and be easy, both It can make trammer's body-building that can look after people by bus again, speed of travel wheelchair quickly.

Utility model content

The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts, the utility model provide a kind of pedal wheel Chair, cart person make wheelchair walk by pedal driving device, can effectively improve the speed of travel.

The utility model is to be achieved through the following technical solutions:

A kind of pedal wheelchair, including vehicle frame and wheel, vehicle frame include seat frame and are symmetricly set on seat frame two sides Arm-rest frame, transfer are connect with seat frame, and wheel is connect with transfer；Pedal driving device is connect with arm-rest frame；

Wherein, pedal driving device includes steamboat, a pair of of swing rod, a pair of of treadle and a pair of of crank；The top of arm-rest frame is set It is equipped with support rod, one end of swing rod and support rod are connected with revolute pair, and the other end of swing rod and one end of treadle are connected with revolute pair It connects, the other end of treadle and one end of crank are connected with revolute pair, and the other end and steamboat of crank are connected with revolute pair.

Further, the steamboat is provided centrally with axle sleeve, is provided with freewheel clutch in axle sleeve, freewheel clutch and bent Handle is connected with revolute pair.

Further, the freewheel clutch includes outer ring, star-wheel and roller；Outer ring is fixedly connected with axle sleeve, star-wheel installation At the center of outer ring, roller is arranged between outer ring and star-wheel.

Further, the treadle is detachably connected with crank.

Further, the transfer includes connecting rod and a pair of of rocking bar, and the rocking bar and seat frame are rotatablely connected, rocking bar One end is connect with link rotatable, and wheel and another connection of rocking bar, rocking bar (drive wheel steering.

Further, it is provided with horizontal connection axis on the rocking bar, wheel is mounted in connecting shaft.

Further, it is additionally provided with handlebar stem at the top of the rocking bar, transfer is controlled by handlebar stem and is turned to.

Further, the upper end of the handlebar stem is additionally provided with horizontal handlebar.

Further, pedal is additionally provided at the top of the treadle.

Compared with prior art, the utility model has technical effect beneficial below:

A kind of pedal wheelchair, including vehicle frame, wheel, transfer and pedal driving device；The both feet of trammer step down in On the pedal of treadle, both feet front and back is trampled, and makes crank complete cycle rotary motion, and crank drives steamboat to rotate by freewheel clutch, Steamboat drives the movement of entire wheelchair in turn, while the direction of wheel is controlled by transfer.Treadle band is trampled by both feet Dynamic driving device movement, improves the movement speed of wheelchair, and it is smaller to solve existing wheelchair activities range, should not go on a long journey etc. and to ask Topic, and trammer is made to have achieved the purpose that body-building.

Pedals and pedal/crank drive system can be removed crank and steamboat by the way of being detachably connected, while pedal being folded, Steamboat and treadle are fixed on behind wheelchair, wheelchair can carry out implementation operation, improve the applicability of wheelchair.

Two rocking bars are connected by connecting rod, realize synchronous interaction, guarantee the consistency of two wheels rotation, are improved The safety of wheelchair.

Detailed description of the invention

Fig. 1 is the structural scheme of mechanism under the use state of wheelchair；

Fig. 2 is the structural scheme of mechanism under the folded state of wheelchair；

Fig. 3 is the structural schematic diagram of super-clutch；

Fig. 4 is pedal driving device structural schematic diagram；

Fig. 5 is the scheme of installation of vehicle frame and pedal driving device；

Fig. 6 is the structural schematic diagram of transfer；

Fig. 7 is the structural schematic diagram of rocking bar；

Fig. 8 is the structural schematic diagram of vehicle frame；

In figure: 1, wheelchair；1-1, vehicle frame；2, transfer；2-1, handlebar stem；2-2, handlebar；2-3, rocking bar；2-4, company Bar；3, pedal driving device；3-1, steamboat；3-2, crank；3-4, super-clutch；3-5, treadle；3-6, swing rod；It is 3-4-1, outer Ring；3-4-2, roller；3-4-3, star-wheel；4, it is linked with.

Specific embodiment

The following describes the utility model in further detail with reference to the accompanying drawings, it is described be the explanation to the utility model and It is not to limit.

As illustrated in fig. 1 and 2, a kind of pedal wheelchair, including vehicle frame 1-1, wheel, transfer 2 and pedal driving device 3；Vehicle frame 1-1 includes seat frame and symmetrically arranged two arm-rest frames, and two arm-rest frames are connected to the both ends of seat frame, often The top of a arm-rest frame is provided with the horizontal support bar for connecting pedal driving device 3, transfer 2 and horizontal seat frame Connection, transfer is connect with wheel, for controlling the direction of wheel.

As in Figure 3-5, foot drive device 3 includes two swing rod 3-6, two treadle 3-5, two crank 3-2 and small Take turns 3-1；One end of swing rod 3-6 is sleeved on the support rod of arm-rest frame, and is connected with support rod with revolute pair, and swing rod 3-6's is another One end is connect with one end of treadle 3-5 with revolute pair, and the other end of treadle 3-5 is connect with crank 3-2 with revolute pair, and treadle 3- 5 are connect with crank 3-2 using removably；Axle sleeve is arranged in the center of steamboat 3-1, and axle sleeve is internally provided with super-clutch 4, crank 3-2 is fixedly connected with super-clutch 4, and pedal 3-5-1 is additionally provided on treadle, and the foot of operator steps down in pedal 3- 5-1 is moved forward and backward treadle 3-5.

Super-clutch 4 includes outer ring 3-4-1, roller 3-4-2 and star-wheel 3-4-3；Outer ring 3-4-1 is cavity ring dress knot Structure, outer ring 3-4-1 are fitted in axle sleeve, and using interference fit installation, star-wheel 3-4-3 is mounted on outer ring for outer ring 3-4-1 and axle sleeve The center of 3-4-1, roller 3-4-2 are mounted between outer ring 3-4-1 and star-wheel 3-4-3, and crank 3-2 is connect with star-wheel 3-4-3, and Drive star-wheel rotation.

As shown in figs 6-8, transfer 2 includes connecting rod 2-4, a pair of of rocking bar and handlebar stem 2-1；A pair of of rocking bar is horizontally disposed At the both ends of seat frame bottom, and rocking bar 2-3 and horizontal seat frame are rotatablely connected, and one end of rocking bar 2-3 and connecting rod 2-4 are rotated Connection, the other end of rocking bar 2-3 is provided with horizontal connecting shaft, and wheel is mounted in connecting shaft, hand lever 2-1 pass through seat frame with Rocking bar 2-3 is fixedly connected, and horizontal handle 2-2 is provided at the top of handlebar stem 2-1.Swing handle 2-2, handle 2-2 band shake Bar rotation, rocking bar drives vehicle wheel rotation in turn, simultaneously because two rocking bars are linked together by connecting rod 2-4, realizes two and shakes The linkage of bar ensure that the consistency in two wheel steering directions.

A kind of working principle of pedal wheelchair provided by the utility model is described in detail below.

The pedal wheelchair, trammer's both hands are helped on handle, and both feet step down on the pedal of treadle, and both feet front and back is trampled, Crank is set to do complete cycle rotary motion, crank drives steamboat to rotate by freewheel clutch, to drive the movement of entire wheelchair.It pushes away Two wheels that vehicle people is connect by the handle rotation of handlebar stem with two rocking bars, two rocking bars are connected by connecting rod, make two wheel steerings Realize linkage, steering procedure is more flexible, safe；

Since treadle and crank use detachable connection method, steamboat can also be unloaded down, treadle is folded by trammer, Steamboat and treadle are fixed on behind wheelchair together with the lanyard 4 being fixed on vehicle frame, complete the implementation operation of wheelchair.

The wheelchair completes the moving operation of wheelchair by pedal driving device, can improve the movement speed of wheelchair, while energy Achieve the effect that trammer's body-building；It conveniently rides and carries out by fold mechanism, high degree of humanity；The utility model utilizes Rate is high, pedal driving device safety easy to operate；Finally, the utility model structure is simple, manufacture is easy, at low cost.It can solve The problems such as certainly trammer is prolonged tired out, speed is low.

The above content is only to illustrate the technical idea of the utility model, and the protection model of the utility model cannot be limited with this Enclose, it is all according to the utility model proposes technical idea, any changes made on the basis of the technical scheme each falls within this reality Within protection scope with novel claims.

Claims (9)

1. a kind of pedal wheelchair, which is characterized in that including vehicle frame (1-1), wheel, transfer and pedal driving device (3), Vehicle frame (1-1) includes seat frame and the arm-rest frame for being symmetricly set on seat frame two sides, and transfer (2) is connect with seat frame, vehicle Wheel is connect with transfer；Pedal driving device (3) is connect with arm-rest frame；

Wherein, pedal driving device (3) includes steamboat (3-1), a pair of of swing rod, a pair of of treadle and a pair of of crank；Arm-rest frame it is upper Portion is provided with support rod, and one end of swing rod (3-6) and support rod are connected with revolute pair, the other end and treadle (3- of swing rod (3-6) 5) one end is connected with revolute pair, and the other end of treadle (3-5) is connect with one end of crank (3-2) with revolute pair, crank (3-2) The other end connect with steamboat (3-1) with revolute pair.

2. a kind of pedal wheelchair according to claim 1, which is characterized in that the steamboat (3-1) is provided centrally with axis It covers, is provided with freewheel clutch (3-4) in axle sleeve, freewheel clutch (3-4) is connect with crank (3-2) with revolute pair.

3. a kind of pedal wheelchair according to claim 2, which is characterized in that the freewheel clutch (3-4) includes outer ring (3-4-1), star-wheel (3-4-3) and roller (3-4-2)；Outer ring (3-4-1) is fixedly connected with axle sleeve, and star-wheel (3-4-3) is mounted on The center of outer ring (3-4-1), roller (3-4-2) are arranged between outer ring (3-4-1) and star-wheel (3-4-3).

4. a kind of pedal wheelchair according to claim 1, which is characterized in that the treadle (3-5) and crank (3-2) are removable Unload connection.

5. a kind of pedal wheelchair according to claim 1, which is characterized in that the transfer include connecting rod (2-4) and A pair of of rocking bar, the rocking bar (2-3) and seat frame are rotatablely connected, and one end of rocking bar (2-3) and connecting rod (2-4) are rotatablely connected, vehicle Wheel and rocking bar (2-3) another connection, rocking bar (2-3) drive wheel steering.

6. a kind of pedal wheelchair according to claim 5, which is characterized in that be provided with horizontal connect on the rocking bar (2-3) Spindle, wheel are mounted in connecting shaft.

7. a kind of pedal wheelchair according to claim 5, which is characterized in that be additionally provided at the top of the rocking bar (2-3) Handlebar stem (2-1) is turned to by handlebar stem (2-1) control transfer (2).

8. a kind of pedal wheelchair according to claim 7, which is characterized in that the upper end of the handlebar stem (2-1) is also set It is equipped with horizontal handlebar (2-2).

9. a kind of pedal wheelchair according to claim 1, which is characterized in that be additionally provided at the top of the treadle (3-5) Pedal (3-5-1).