TWI601522B - Treaded wheelchair - Google Patents

Description

Step-on wheelchair

The present invention relates to a step-on wheelchair, and more particularly to a step-on wheelchair in which a user can select a family member or a user to drive a wheelchair forward, backward or turn.

According to the advancement of medical technology, the average life expectancy of human beings has increased much compared with that of the 1940s and 1950s. The average life expectancy of Taiwanese people can be as high as 80 years old. However, with the increase of age, the functions of various organs of the body are also The aging, this is an indisputable fact, and when the human body has a more serious disease, or is old and weak, it may have to stay in the hospital bed for a long time and it is not good, so in order to consider the actions of the elderly or patients Convenient and user-friendly, it is often used to ride a wheelchair, in order to be able to benefit the elderly or patient activities.

With the advancement of technology, a variety of wheelchairs with different functional types have been developed. One of the wheelchairs is equipped with a foot pedal, which allows the user of the wheelchair to perform a pedaling and turning motion similar to riding a bicycle, which can help the user to rehabilitate the footsteps and achieve a simple exercise effect, thereby having the function of pressing and relaxing. Sweep the user's feeling of depression in a wheelchair for a long time.

However, the conventional structure has the following disadvantages: (1) The design of the conventional structure is mostly based on the consideration of the hands or feet of the elderly or the patients. If the hand is inconvenient, the user cannot control the direction of the wheelchair. (2) The pedaling mechanism of the conventional structure is mostly limited to the original rotation after the pedaling, and the user cannot freely move to other areas that he wants to go, greatly reducing the user's willingness to use.

The present invention is to improve the above-mentioned shortcomings, and the main technique and purpose is to design a step-on wheelchair that can turn by swinging the seat angle.

Therefore, the step-type wheelchair that can achieve the above purposes mainly includes: a frame having two wheels on both sides, the two wheels being combined by a cross bar; a seat disposed on the frame; a support group, The utility model is disposed between the seat and the crossbar of the frame. The support group is composed of a rotating rod, an upright column and two swinging members. The rotating rod is arranged below the center of the seat, and the vertical column is arranged under the rotating rod. In combination with the frame rail, the two swinging members respectively have two fulcrums combined with the crossbar and a floating point combined with the bottom surface of the seat; a front wheel drive group consisting of the front wheel, the tread portion, the first sprocket and the chain The treading portion is disposed on two sides of the front wheel and the treading portion has two cranks and two pedals on opposite sides, the first sprocket is disposed on one side between the front wheel and the treading portion, and the chain is sleeved thereon; a steering set having a shaft and a first reel and a steel cable, the shaft being disposed above the front wheel, the cable passing around the first reel and engaging the second steering group; a rear wheel drive group Between the two wheels of the frame and the crossbar, having a second sprocket a wheel axle, the axle is disposed on both sides of the wheel, and the second sprocket is disposed at a center of the axle and the second sprocket sleeves the chain of the front wheel drive group, and the rear wheel drive group is driven by the front wheel drive group to advance the rear wheel; a second steering group, comprising two second reels and a steering wheel, wherein the two second reels are respectively disposed on the left and right floating points below the seat, and the other ends of the steel cables respectively pass through the two The second reel and the steering wheel; the feature of the present invention is that the rotation of the seat causes the support group and the second steering group to generate a swing angle of 0 to 45 degrees and pulls the cable to drive the first steering group to generate a turn or angle. The effect of recovery, and the effect of wheelchair advancement through the front and rear wheel drive groups.

In order to enable the reviewing committee to have a better understanding and recognition of the features and characteristics of the present invention, the following preferred embodiments are illustrated with the following description: Please refer to the first, second, third, fourth, fifth, sixth, and seventh In the eight and nine figures, the pedaling type of the present invention mainly comprises: a frame 10, a seat 20, a support group 30, a front wheel drive group 40, a first steering group 50, a rear wheel drive group 60, and A second steering group 70 is constructed.

The frame 10 has two wheels 11 on both sides thereof, and the two wheels 11 are coupled by a cross bar 12; the seat 20 is disposed on the frame 10; the support group 30 is disposed on the seat 20 and the frame 20 Between the crossbars 12 of the frame 10, the support group 30 is composed of a rotating rod 31, an upright column 32 and two oscillating members 33, which are disposed below the center of the seat 20, and the upright column 32 is disposed on the rotating rod 31, in combination with the frame 10 crossbar 12, the two swinging members 33 respectively have two fulcrums 331 combined with the crossbar 12 and a floating point 332 combined with the bottom surface of the seat 20; the front wheel drive group 40, which is provided by the front wheel 41. The tread portion 42, the first sprocket 43 and the chain 44 are formed. The tread portion 42 is disposed on two sides of the front wheel 41 and the tread portion 42 has two cranks 421 and two pedals 422 on opposite sides. The first sprocket 43 The first steering group 50 has a shaft 51 and a first reel 52 and a steel cable 53. The shaft 51 is disposed on a side between the front wheel 41 and the tread portion 42. Above the front wheel 41, the cable 53 is wound around the first reel 52 and engaged with the second steering set 70; the first steering set 50 is similar to the structure of a pulley, and the cable 53 is passed around A roll of wire 52, when rotated, drive shaft 51 can be rotated.

The rear wheel drive unit 60 is disposed between the two wheels 11 of the frame 10 and the crossbar 12, and has a second sprocket 61 and an axle 62. The axle 62 passes through the wheels 11 on both sides, and the second The sprocket 61 is disposed at the center of the axle 62 and the second sprocket 61 is sleeved with the chain 44 of the front wheel drive group 40. The rear wheel drive group 60 is driven by the front wheel drive group 40 to advance the rear wheel; the second steering group 70, The second cable reel 71 and the steering wheel 72 are respectively disposed on the left and right floating points 332 below the seat 20, and the other ends of the steel cable 53 respectively pass through the two Two cord reel 71 and the steering wheel 72;

Therefore, through the above structure, the rotation of the seat 20 can be achieved, and the support group 30 and the second steering group 70 can generate a swing angle of 0 to 30 degrees and pull the cable 53 to drive the first steering group 50 to turn or angle. Through the front and rear wheel drive groups 40, 60, the effect of the wheelchair advancement can be obtained.

Through the above structure, the following functions and advantages can be obtained: (1) Please refer to the first, third, fourth, fifth, seventh, and eighth figures. When moving forward, the user steps on the tread portion 42 of the front wheel drive group 40 to rotate, and then The sequence driving crank 421, the front wheel 41, the first sprocket 43, the chain 44, and the rear wheel drive group 60 rotate, and the wheelchair body is moved, and in this state, the user can be rehabilitated and exercised. (2) Please refer to the second, sixth and ninth diagrams. When the user wants to turn, the user turns the seat 20 in the direction of turning, and the second steering group 70 and the swinging member 33 of the support group 30 rotate with the rotation angle. The length of the steel cable 53 by the turning portion is shortened, and the length of the opposite side is elongated to rotate the first steering group 50 to achieve the turning effect. (3) The swing angle of the present invention is only rotated between 0 and 30 degrees, so that the angle of the steel cable 53 is too large to cause a dead point. (4) The elderly or patients with inconvenient hands can use the present invention to obtain various practical effects such as rehabilitation of the lower limbs and displacement to other areas. (5) It is worth mentioning that in order to avoid the problem of overturning caused by excessive turning angle, one of the wheels 11 of the frame 10 is not directly coupled with the axle 62 of the rear wheel drive unit 60, in other words, not with the axle 62. The connected wheels 11 produce different rate of rotation when cornering, so that a smooth turning effect can be obtained to avoid rollover.

According to the above idea, the present invention can also be implemented in the following manner: (A) The rear wheel drive unit 60 is provided with a check member 63 which is fitted to the side of the second sprocket 61, thus, inverting The rotation direction of the first steering group 50 causes the chain sprocket 61 to reverse, and the check member 63 abuts the second sprocket 61 to stop the rotation of the axle 62, that is, the braking effect. (B) the steel cable 53 is joined to the first reel 52 and the second reel 71 has an elastic body 54, 73 (such as a spring) respectively. By the arrangement of the elastic bodies 54, 73, the wheelchair is turned after the turn When the elastic bodies 54, 73 are rebounded and the steel cable 53 is returned to the original position, the automatic guiding effect of the wheelchair can be obtained. (C) The frame 10 is provided with an auxiliary wheel 13 which improves the stability of the wheelchair when it is moved. (D) The second sprocket 61 is a bidirectional ratchet, whereby the rotation direction of the first steering group 50 causes the chain sprocket 61 to reverse the reverse direction of the second sprocket 61 to produce a retracting effect. Therefore, the above-mentioned ideas are within the scope of the inventive concept of the present invention.

The above is only the preferred embodiment provided by the present invention, and is not intended to limit the scope of implementation of the present invention. All of the related art in the art are equivalent to the present invention, and should belong to the present invention. The scope of coverage.

"this invention"
10‧‧‧ frame
40‧‧‧Front Wheel Drive Group
53‧‧‧Steel cable
11‧‧‧ Wheels
41‧‧‧ Front wheel
54‧‧‧ Elastomers
12‧‧‧cross bar
42‧‧‧Treading
60‧‧‧ Rear Wheel Drive Group
13‧‧‧Assistance wheel
421‧‧‧ crank
61‧‧‧Second sprocket
20‧‧‧ seats
422‧‧‧ pedal
62‧‧‧Axle
30‧‧‧Support group
43‧‧‧First sprocket
63‧‧‧Remove
31‧‧‧Rotating rod
44‧‧‧Chapter
70‧‧‧Second steering group
32‧‧‧right column
50‧‧‧First steering group
71‧‧‧Second reel
33‧‧‧Swinging parts
51‧‧‧ shaft
72‧‧‧Steering wheel
331‧‧‧ fulcrum
52‧‧‧First cord reel
73‧‧‧ Elastomers
332‧‧‧ floating point

1 is a perspective view of a seat and a support group of the present invention. FIG. 3 is a front view of a front wheel drive group of the present invention. FIG. 4 is a side view of a front wheel drive group of the present invention. FIG. 6 is a side view of a first steering group of the present invention. FIG. 7 is a side view of a rear wheel drive group of the present invention. FIG. 8 is a schematic view of a second steering group and a seat of the present invention. Figure is a schematic diagram of the actual implementation of the second steering group of the present invention

10‧‧‧ frame

11‧‧‧ Wheels

12‧‧‧cross bar

20‧‧‧ seats

40‧‧‧Front Wheel Drive Group

41‧‧‧ Front wheel

42‧‧‧Treading

421‧‧‧ crank

422‧‧‧ pedal

43‧‧‧First sprocket

44‧‧‧Chapter

50‧‧‧First steering group

51‧‧‧ shaft

52‧‧‧First cord reel

53‧‧‧Steel cable

Claims (4)

A step-on type wheelchair mainly comprises: a frame having two wheels on both sides thereof, the two wheels being combined by a cross bar; a seat disposed on the frame; and a support group disposed on the seat and Between the crossbars of the frame, the support group is composed of a rotating rod, a standing column and two swinging members, the rotating rod is disposed under the center of the seat, and the vertical column is disposed under the rotating rod, and the vehicle The two swinging members respectively have two fulcrums combined with the crossbar and a floating point combined with the bottom surface of the seat; a front wheel drive group consisting of a front wheel, a tread portion and a first chain a wheel and a chain, the stepping portion is disposed on two sides of the front wheel and the stepping portion has two cranks and two pedals on opposite sides, and the first sprocket is disposed on a side between the front wheel and the stepping portion a first steering group having a shaft and a first reel and a steel cable, the shaft being disposed above the front wheel, the steel cable winding around the first reel and a first Two steering group engagement; a rear wheel drive group, which is disposed on the two wheels and the crossbar of the frame Between the two, the second sprocket and the axle, the axle is disposed on the two sides of the wheel, and the second sprocket is disposed at the center of the axle and the second sprocket is sleeved with the chain of the front wheel drive group, the rear wheel The driving group is driven by the front wheel drive group to drive the rear wheel; a second steering group has two second reel and the steering wheel, and the two second reels are respectively disposed on the left and right sides of the seat and the floating point In combination, the other end of the cable is respectively wound around the two second reel and the steering wheel; and the rotation of the seat and the second steering group is caused to swing within 0 to 45 degrees by rotating the seat. Angle and pull the cable to drive the first steering group to produce turning or angle recovery, and the front and rear wheel drive groups can achieve the effect of wheelchair advancement. The step-type wheelchair of claim 1, wherein the rear wheel drive group is provided with a check member, and the check member is mounted on a side of the second sprocket, thereby reversing the direction of rotation of the first steering group. The second sprocket is reversed, and the check member abuts the second sprocket to stop the axle rotation. The step-type wheelchair of claim 1, wherein the wire cable is joined to the first reel and the second reel has an elastic body at the end, and the elastic body is provided, and the elastic body is turned back after the wheelchair turns. When the steel cable is returned to its original position, the wheelchair can be automatically guided. The pedal-type wheelchair of claim 1, wherein the frame is provided with an auxiliary wheel, which improves the stability of the wheelchair when moving.