KR20150102278A - Wheelchair combinable bicycle for rehabilitation - Google Patents

Abstract

The present invention relates to a two-person bicycle capable of being combined with a wheelchair. Provided is a wheelchair-combined bicycle for rehabilitation. A wheelchair can be combined with a wheelchair tube which is arranged at one side on a top tube, is hollow, vertically penetrates the top tube, and has a clamp arranged at an upper end. A front wheel can be steered by a steering shaft having one end hinged to both ends of a horizontal bar arranged at the lower end of a steering axle and having the other end hinged to both ends of the hub of the front wheel. According to the wheelchair-combined bicycle for rehabilitation according to the present invention, a wheelchair and a bicycle can be combined and ridden using a simple method of mounting a seat post on the seat tube of an ordinary bicycle, and the leg rehabilitation of a wheelchair rider is enabled as the rider of the wheelchair and the rider of the bicycle can provide a driving force simultaneously or alternately. Moreover, short-distance travel with the wheelchair loaded is possible. The present invention can be used as a two-person bicycle by mounting a separately arranged auxiliary seat when the wheelchair is not included or not necessary.

Description

[0002] Wheelchair combinable bicycle for rehabilitation [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bicycle in which a wheelchair is coupled, a bicycle which can be switched to a two-person bicycle by engaging a wheelchair, and a pedal can be driven together with a wheelchair passenger, .

A number of inventions are known in which a wheelchair and a bicycle are combined to enable a wheelchair to be driven by the power of the bicycle. These techniques provide a way to connect a wheelchair to the front or rear of the bicycle so as to drag the wheelchair by a bicycle, a carrier capable of mounting the wheelchair, and operating the device by a driving device using a hand. And has a technical characteristic that it is not intended to operate the bicycle by the cooperation of the rider and the bicycle driver. In other words, the known techniques provide ways that can be applied only when the passenger is a passenger who does not provide power to the wheelchair occupant.

Korean Patent No. 10-1217470 (inventor: Kim Dong-Ha) relates to a bicycle capable of engaging with a wheelchair. The bicycle has a prem Implamp for engaging with a lower frame of a wheelchair at the upper end, A handlebar provided movably along the longitudinal direction of the stem, and an adjustable position between the stem and the handlebar so as to be adjustable And a handle grip provided with a handle clamp for engaging with the handle of the wheelchair, respectively, at both ends of the handle bar, Lt; / RTI >

The comparison technique is provided with a general type of bicycle, and provides a coupling means for coupling a wheelchair to a stem including a steering wheel bar to be steered, so that a wheelchair can be coupled to the front of the bicycle and operated. This technique can be operated by a driver of a bicycle by steering and driving independently, without requiring a wheelchair occupant to perform a separate driving force or steering operation for moving the bicycle.

In addition, wheelchairs are used not only for patients with uncomfortable lower limbs but also for patients who are undergoing rehabilitation. Therefore, proper exercise for rehabilitation may be necessary during wheelchair use, and more effective rehabilitation training is possible through exercise for movement.

However, the above-described comparison technique does not provide a means by which the occupant can provide the driving force using the lower limb, so that it can not be used more than the means for simple mobility and is not suitable as a means for rehabilitation training of the wheelchair occupant .

In order to solve the above-mentioned conventional problems, the present invention can easily and removably attach the wheelchair, and the wheelchair passenger and the bicycle driver operate the joint driving force to rehabilitate the occupant of the wheelchair, Wheeled bicycle that can be rehabilitated to be an appropriate means.

The present invention also provides a technical arrangement that can be utilized as a two-seat bicycle by mounting a conventional seat as well as a wheelchair.

Other objects of the present invention will become readily apparent from the following description of the embodiments.

In order to achieve the above object, according to an aspect of the present invention, there is provided a two-wheeled bicycle in which a wheelchair can be mounted on one side of a top tube between a head tube and a seat tube, A first chain ring provided to receive a driving force from a crank arm coupled to both sides; A second chain ring provided between the head tube and the top tube and connected to the first chain ring by a chain, the second chain ring being provided to receive a driving force from a crank arm provided on both sides; A wheelchair tube provided at one side of the top tube and formed in a hollow shape vertically penetrating the top tube and having a clamp at an upper end thereof; A steering shaft tube disposed between the wheelchair tube and the seat tube, the steering shaft tube being provided to intersect with the top tube and having a steering shaft passed through the steering shaft tube; A handle bar coupled to an upper end of the steering shaft; A steering shaft that is provided in a pair and is hinged to both ends of a horizontal bar provided at a lower end of the steering shaft at one end and hinged at both ends of the hub at the other end; And a wheelchair post which is formed in the shape of a tube protruding from a bottom portion of the seat and which is inserted into the wheelchair tube so that the wheelchair is fixed on the top tube, / RTI >

Further, according to the present invention, there is provided a wheelchair assisting bicycle capable of rehabilitation training, further comprising an auxiliary seat provided with a seat post to be coupled to the wheelchair tube and a handle on both sides.

The first chainring includes: a first sprocket connected to the rear wheel and transmitting driving force to the rear wheel; And a second sprocket that is connected to the second chain ring and is coaxially coupled to the first sprocket.

In the wheelchair-united bicycle capable of rehabilitation training according to the present invention, a wheelchair and a bicycle can be operated in a simple manner by attaching a seat post to a seat tube of a general bicycle, and a wheelchair user and a bicycle driver can simultaneously or alternately It is possible to provide the driving force, and the rehabilitation training of the occupant of the wheelchair can be performed, and it is also possible to move the robot in a state where the wheelchair is loaded.

If the wheelchair is not available or is not needed, it can be used as a bicycle which can be equipped with a separate auxiliary seat for two people.

1 is a perspective view showing an embodiment of a wheelchair-bound bicycle in which rehabilitation training is possible according to the present invention.
2 is a front view showing an embodiment of a wheelchair-coupled bicycle capable of rehabilitation training according to the present invention.
3 is a perspective view showing an embodiment of a wheelchair tube of a wheelchair-combined bicycle which can be rehabilitated according to the present invention.
4 is a perspective view showing an embodiment of a first chainring of a wheelchair-bound bicycle in which rehabilitation training is possible according to the present invention.
5 is a bottom perspective view showing one embodiment of a horizontal bar and a steering shaft of a wheelchair-combined bicycle capable of rehabilitation training according to the present invention.
6 is a perspective view showing an embodiment of an auxiliary seat of a wheelchair-bound bicycle in which rehabilitation training is possible according to the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention, And the scope of the present invention is not limited to the following examples.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant explanations thereof will be omitted.

FIG. 1 is a perspective view showing an embodiment of a wheelchair-combined bicycle in which rehabilitation training is possible according to the present invention, and FIG. 2 is an exploded perspective view.

Referring to FIGS. 1 and 2, the present invention may include a frame 110, a driving unit 120, a steering unit 130, a wheelchair 200, and an auxiliary seat 300.

The frame portion 110 may be constituted by a head tube 111, a seat tube 112, a top tube 113, a wheelchair tube 114, and a steering shaft tube 116, .

The bicycle 100 according to the present invention is provided in such a form that the top tube 113 extends longer than a general bicycle and the wheelchair tube 114 is provided to mount the wheelchair 200. Also, the bicycle driver can operate the bicycle by seating the seat on the rear of the wheelchair 200, driving the crank of the first chain ring 121, and steering the steering wheel with the handlebar 132. The occupant of the wheelchair 200 is seated in front of the driver and the bicycle can be driven together with the driver by rotating the second chain ring 122 provided between the top tube 113 and the head tube 111 with the legs .

The wheelchair tube 114, the steering shaft 131 and the seat tube 112 are sequentially crossed with the top tube 113 from the front side on the top tube 113 of the bicycle 100 according to the present invention, And vertically extend upwardly and downwardly.

2 and 3, the wheelchair tube 114 is coupled to a wheelchair post 211 provided at the bottom of the seat 210 in a normal wheelchair 200, And a clamp 115 is provided at an upper end to fix the wheelchair post 211. [ Accordingly, the wheelchair tube 114 may be provided in a hollow form so that the wheelchair post 211 can be intro- duced to the inside, and may be formed so as to extend from the top tube 113 to the down tube 117.

The wheelchair 200 coupled to the wheelchair tube 114 is fixed to allow the wheel 220 on both sides to float at a predetermined height from the ground so as to serve as an auxiliary wheel for preventing the bicycle 100 from being turned to the side At the same time, it is possible not to interfere with the steering characteristics of the bicycle 100. Alternatively, the bicycle 100 may be stably operated by fixing the wheelchair 200 so that the wheel 220 comes into contact with the ground surface. The wheelchair post 211 is extended from the bottom surface of the seat 210 by a predetermined length and is inserted into the wheelchair tube 114 and fixed by the clamp 115 to thereby arbitrarily adjust the fixed height of the wheelchair 200 .

The clamp 115 may comprise a ring 115a and a locking means 115b which are fastened around the upper end of the wheelchair tube 114. The upper end of the wheelchair tube 114 is cut at one side so that the inner diameter is slightly reduced as the clamp 115 is locked, thereby fixing the wheelchair post 211. The locking means 115b of the clamp 115 may be provided in the form of a lever or may be provided in such a way that the bolts are fastened to the ring 115a for a more firm fixation.

The top tube 113 and the down tube 117 are provided to extend longer than the conventional bicycle due to the seating of the wheelchair 200 and the steering shaft 131 is separated from the front wheel 141, ). This will be explained in more detail below.

The seat tube 112 extends through the top tube 113 and extends downward to be in contact with the down tube 117. A first chain ring 121 is provided at a position where the seat tube 112 and the down tube 117 are in contact with each other and the first chain ring 121 is connected to the rear wheel 142 through a chain, .

Referring to FIG. 4, the first chain ring 121 is coaxially coupled to the first sprocket 121a and the second sprocket 121b. The first sprocket 121a is chain-connected to the rear wheel 142 and the second sprocket 121b is chain-connected to the second chain ring 122. [ In other words, the first chain ring 121 is configured to be able to transmit the driving force of the driver and the driving force of the wheelchair occupant simultaneously to the rear wheel 142.

The steering portion 130 may be composed of a steering shaft 131, a handle bar 132, a horizontal bar 133, and a steering shaft 134.

The steering shaft 131 is provided so as to adjust the direction of the bicycle by performing axial motion by a handle bar 132 horizontally coupled to the upper end. The steering shaft 131 is inserted into the steering shaft tube 116 with the stop portion and the lower end protrudes outside the down tube 117 to join the horizontal bar 133.

Referring to FIG. 5, one end of the steering shaft 134 is coupled to both sides of the horizontal bar 133. The steering shaft 134 is provided so that the front wheel 141 is steered in accordance with the movement of the handle bar 132 by transmitting the rotational motion of the steering shaft 131 to the front wheel 141, And a pair of bars each having one end connected to both ends and the other end coupled to both ends of the hub b of the front wheel 141. The horizontal bar 133 and the hub b are coupled to both ends of the steering shaft 134 by hinges h so that the rotational motion of the steering shaft 131 is converted into a rectilinear motion, Lt; / RTI >

The outer diameter of the front wheel 141 may be set to a size that does not exceed the height of the top tube 113 in consideration of the line of sight of the wheelchair occupant and the height for the first chainring operation. As the outer diameter of the front wheel 141 becomes smaller, the visibility of the occupant of the wheelchair becomes wider and the position of the second chain ring 122 can be lowered. Thus, The posture for driving the ring 122 can be taken. Conversely, as the outer diameter of the front wheel 141 becomes larger, the height of the second chain ring 122 adjacent to the front wheel 141 becomes higher. In order to drive the second chain ring 122 by the occupant of the wheelchair, And the sense of stability may be deteriorated by disturbing the forward view. Therefore, it is preferable that the outer diameter of the front wheel 141 is smaller than the height of the top tube 113 on which the wheelchair 200 is seated. On the other hand, the rear wheel 142 may be provided with a wheel having an outer diameter larger than that of the front wheel 141, for example, an outer diameter larger than the height of the top tube 113,

In the present invention, the wheelchair 200 is provided in a form in which the wheelchair post 211 is provided on the bottom portion of the seat 210 in a normal general wheelchair. Since a typical wheelchair is provided with a foldable structure, the seat is made of cloth or artificial leather, and there is no separate structure for supporting the bottom. The wheelchair post 211 may be inserted into the wheelchair tube 114 to allow the wheelchair 200 to be engaged with the bicycle 100. The seat 210 may be a wheelchair, It is preferable that the wheelchair post 211 is fixed to the frame of the wheelchair 200 and the wheelchair post 211 so as to support the load of the wheelchair 200 and the occupant of the wheelchair.

Also, according to the present invention, the bicycle 100 may be operated not only for the wheelchair 200 but also for the auxiliary seat 300. Referring to FIG. 6, an auxiliary seat 300 that can be coupled to a wheelchair post 114 of a bicycle 100 is shown. The auxiliary seat 300 may be provided with a seat post 310 on the bottom surface thereof in the same manner as the wheelchair 200 so that the auxiliary seat 300 can be seated on the bicycle 100 by being inserted and fixed to the wheelchair tube 114. By doing so, the bicycle 100 according to the present invention can be utilized as a general two-passenger bicycle, and various rehabilitation training can be performed according to the condition of the patient.

The operation of the wheelchair-bound bicycle in which the rehabilitation training is possible according to the present invention will now be described.

2 and 3, the wheelchair post 211 provided on the bottom surface of the seat 210 is inserted into the wheelchair tube 114 in order to couple the wheelchair 200 to the bicycle 100, The locking means 115b of the locking mechanism 115a. At this time, the wheel 220 of the wheelchair 200 may be brought into contact with the ground, or may be fixed so as to float at a predetermined height from the ground, thereby improving the steering performance of the bicycle 100.

When the wheelchair 200 is fixed to the bicycle 100, the bicycle driver and the wheelchair passenger can ride the bicycle after each boarding. The driving force of the bicycle may be provided through the first chainring 121 and the wheelchair occupant may be provided by driving the second chainring 122. [

Referring to FIG. 6, in addition to the wheelchair 200, a separate auxiliary seat 300 may be coupled to the bicycle 100 to serve as a general two-passenger bicycle. The seat post 310 provided on the bottom surface of the auxiliary sheet 300 can be inserted into the wheelchair tube 114 and fixed so that the auxiliary sheet 300 can be mounted on the bicycle. The handle 320 is provided on both side surfaces of the auxiliary seat 300, so that the passenger of the auxiliary seat can stably ride on the bicycle.

The steering wheel 132 is connected to the steering shaft 131 and the steering shaft 134 so that the front wheel 141 And the like.

Although the present invention has been described with reference to the accompanying drawings, it is to be understood that various changes and modifications may be made without departing from the spirit of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the following claims.

100: Bicycle 110: Frame part
111: head tube 112: seat tube
113: Top tube 114: Wheelchair tube
115: Clamp 116: Steer shaft tube
117: down tube 120:
121: first chainring 122: second chainring
130: steering part 131; Steering shaft
132: handle bar 133: horizontal bar
134: Steering shaft 141: Front wheel
142: rear wheel 200: wheelchair
210: seat 211: wheelchair post
300: auxiliary sheet 310: seat post
320: Handle

Claims (3)

A two-wheeled bicycle in which a wheelchair can be mounted on one side of a top tube (113) between a head tube (111) and a seat tube (112)
A first chain ring 121 provided at one side of a lower end of the seat tube 112 and adapted to receive a driving force from a crank arm 123 coupled to both sides;
The crank arm 124 is provided between the head tube 111 and the top tube 113 and is connected to the first chain ring 121 by a chain c. A second chain ring 122 provided to receive the second chain ring 122;
A wheelchair tube 114 provided at one side of the top tube 113 and formed in a hollow shape vertically penetrating the top tube 113 and having a clamp 115 at an upper end thereof;
A steering shaft tube 116 positioned between the wheelchair tube 114 and the seat tube 112 and provided to intersect with the top tube 113 and having a steering shaft 131 inserted therein;
A handle bar 132 coupled to an upper end of the steering shaft 131;
And one end is hinged to both ends of the horizontal bar 133 provided at the lower end of the steering shaft 131 and the other end is hinged to both ends of the hub h of the front wheel 141 A steering shaft 134 provided; And
The wheelchair 200 is formed in a tube shape protruding from the bottom of the seat 210 and is inserted into the wheelchair tube 114 so that the wheelchair 200 is fixed on the top tube 113 And a wheelchair post (211) to be reassembled. The method according to claim 1,
Further comprising an auxiliary seat (300) having a seat post (310) to be coupled to the wheelchair tube (114) and having a handle (320) on each side. The method according to claim 1,
The first chain ring (121)
A first sprocket 121a chain-connected to the rear wheel 142 for transmitting a driving force to the rear wheel 142; And
And a second sprocket (121b) connected to the second chain ring (122) and coaxially coupled to the first sprocket (121a).

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