CN107260425A - Manual stair-climbing wheel chair - Google Patents

Abstract

The invention discloses a wheelchair for climbing stairs manually, which adopts a hand wheel, an auxiliary wheel and a rotatable frame. The hand wheel and the roller are coaxially fixed, and when the roller rotates, the hand wheel also rotates simultaneously, but the auxiliary wheel does not touch the ground at this time; When it is necessary to climb stairs, turn the turret until the auxiliary wheels can fully touch the ground. There is a auxiliary wheel on the upper and lower steps. At this time, the wheelchair has a point of force on the steps. Roll the hand wheel in the upward direction of the steps, and the wheelchair will Then move upwards to realize the stair climbing function of the wheelchair; in the stair climbing process, the support rod is used to be positioned at the rear side of the wheelchair, which supports the wheelchair, prevents the wheelchair from sliding down, and ensures the stability of the wheelchair going upstairs.

Description

manual stair climbing wheelchair

technical field

The invention relates to the technical field of medical devices, in particular to a manual stair climbing wheelchair which can push the wheelchair upstairs by itself.

Background technique

Ordinary wheelchairs can facilitate the walking of the disabled, but when encountering steps, the wheelchair will be restricted, so that the range of activities of the disabled is restricted. In the related art, the crawler-type stair-climbing wheelchair realizes the step-climbing ability of the wheelchair by designing the approach angle and departure angle of the front and rear of the crawler and the height of the crawler mechanism. However, when the track is in contact with the ground, the friction force is relatively large, which makes it difficult for the wheelchair to turn, that is, more force is required when turning, and the track will also damage the edge of the step.

Contents of the invention

In view of this, the embodiments of the present invention provide a manual stair climbing wheelchair with easy steering.

In order to solve the above-mentioned technical problems, an embodiment of the present invention provides a wheelchair for climbing stairs manually, including a handwheel, a turret, auxiliary wheels and rollers; the handwheel is coaxially connected with the rollers, and its diameter is smaller than that of the rollers The auxiliary wheel is fixed on the hand wheel through the turret; the turret includes a sphere part, a cross bar and a side bar, and the center of the sphere part is provided with a through hole, and the symmetrical sides of the sphere are respectively fixed on the Side rods, the cross rods are fixed between the two side rods; the hand wheel passes through the through hole, the auxiliary wheel is fixed on the cross rods, and the ball of the turret is rotated Partly drives the auxiliary wheel to rotate.

Preferably, the upper and lower surfaces of the through hole are symmetrically provided with depressions, and the corresponding positions of the hand wheel are provided with protrusions, and the protrusions engage with the grooves to fix the turret on the hand wheel.

Preferably, the turret can rotate around the handwheel at 360 ^° , and the direction of rotation is perpendicular to the advancing direction of the rollers. When it is not necessary to climb stairs, it drives the auxiliary wheels to rotate to the inside of the handwheel; When building, drive the auxiliary wheel to rotate to the outside of the hand wheel.

Preferably, the distance between two adjacent auxiliary wheels is 25cm-28cm, preferably 27.88cm; the inner diameter of the handwheel is 51cm, and the outer diameter is 56cm.

Preferably, it also includes a support rod, a backrest, a shelf and an armrest; the support rod is telescopically fixed on the brackets on both sides of the backrest; the shelf is located between the two armrests, and one end is fixed to a On the armrest, the other end is movably fixed on another armrest; a display screen, a control device and a navigation device are arranged on the shelf, and the control device controls the expansion and contraction of the support rod; A control panel of the control device and a navigation page of the navigation device are displayed.

Preferably, it also includes a brake and a front wheel, the brake is connected to the front wheel; the friction between the brake and the front wheel is controlled by manual control or the control device.

Preferably, the control device includes a power supply unit, a telescopic unit and a brake unit; the power supply unit provides electric energy for the control device and the navigation device, and the telescopic unit controls the expansion and contraction of the support rod; the brake unit Friction between the brakes and the front wheels is controlled.

Preferably, the armrest is also provided with a socket for charging the power supply unit.

Compared with related technologies, the beneficial effects brought by the technical solutions provided by the embodiments of the present invention are: the manual stair climbing wheelchair of the present invention adopts handwheels, auxiliary wheels and turrets, and the handwheels and rollers are coaxially fixed. , the hand wheel is also rotating at the same time, but the auxiliary wheel is not in contact with the ground at this time; There is a point of force on the steps, and the wheelchair moves upwards when the hand wheel is rolled in the upward direction of the steps, realizing the wheelchair's function of climbing stairs, and the auxiliary wheels do not cause damage to the ground; the wheelchair in the embodiment of the present invention has a simple structure and is easy to use.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of a turret according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the groove of the sphere part of the turret according to the embodiment of the present invention;

Fig. 4 is another schematic diagram of the structure of the embodiment of the present invention;

Fig. 5 is a schematic diagram of a control device according to an embodiment of the present invention.

Among them: hand wheel 1, protrusion 11, turret 2, ball part 21, cross bar 22, side bar 23, through hole 211, concave groove 212, auxiliary wheel 3, roller 4, support rod 5, backrest 6, bracket 61 , shelf 7, display screen 71, control device 72, navigation device 73, power supply unit 721, telescopic unit 722, brake unit 723, armrest 8, socket 81, brake 9, front wheel 10.

detailed description

In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

Please refer to Fig. 1, Fig. 2, the embodiment of the present invention provides a kind of manual stair climbing wheelchair, comprises handwheel 1, turret 2, auxiliary wheel 3 and roller 4; Said handwheel 1 and said roller 4 are coaxial connected, its diameter is smaller than the diameter of the roller 4; the auxiliary wheel 3 is fixed on the handwheel 1 through the turret 2; the turret 2 includes a spherical part 21, a cross bar 22 and a side bar 23, which Said side bars 23 are respectively fixed on symmetrical sides, and said cross bar 22 is fixed between two said side bars 23; said hand wheel 1 passes through said sphere part 21, and said sphere part 21 can wind around said hand wheel. When the wheel 1 rotates, the turret 2 is movably fixed on the hand wheel 1; Said auxiliary wheel 3 rotates. .

When it is not necessary to go up the steps, the hand wheel 1 rotates with the roller 4, but at this time the auxiliary wheels 3 are not in contact with the ground; when it is necessary to go up the steps, the auxiliary wheels 3 are adjusted to be in contact with the ground by rotating the spherical part 21 of the turret 2 , the auxiliary wheels 3 are respectively located on the upper and lower steps. At this time, the wheelchair has stress points on the steps. Turn the handwheel 1 in the upward direction of the steps, and the wheelchair will move upwards. The person in the wheelchair can go upstairs by himself. The structure is simple and easy to use. .

Further, referring to accompanying drawings 2 and 3, the sphere part 21 is provided with a through hole 211 through which the hand wheel 1 passes; the upper and lower surfaces of the through hole 211 are symmetrically provided with recesses 212, The corresponding position of the handwheel 1 is provided with a protrusion 11 , and the protrusion 11 engages with the groove 212 to fix the turret 2 on the handwheel 1 . The turret 2 can rotate around the hand wheel 1360 ^° , and the rotation plane is perpendicular to the plane that is the advancing direction of the roller 4; when it is not necessary to climb stairs, rotating the turret 2 drives the auxiliary wheel 3 to be positioned on the The inner side of the hand wheel 1 is in a storage state; when climbing stairs, turn the turret 2 to drive the auxiliary wheel 3 to be located at the outer side of the hand wheel 1. The wheel 1 and the auxiliary wheel 3 respectively exist on the upper and lower steps as the focus point, which realizes the upward movement of the wheelchair.

Further, the distance between two adjacent auxiliary wheels 3 is 25cm to 28cm, preferably 27.88cm; during the wheelchair climbing process, the auxiliary wheels 3 need to be present on the upper and lower stairs to serve as fulcrums, then the two The distance between the auxiliary wheels 3 needs to be smaller than the distance between two adjacent steps; the inner diameter of the hand wheel 1 is 51 cm, and the outer diameter is 56 cm.

Further, with reference to accompanying drawing 4, also comprise support bar 5, backrest 6, shelf 7, armrest 8, brake member 9 and front wheel 10, described support bar 5 is telescopically fixed on both sides on described backrest 6 on the bracket 61; the shelf 7 is located between the two armrests 8, one end is fixed on one of the armrests 8, and the other end is movably fixed on the other armrest 8; the brake member 9 and the front Wheels 10 are connected; the shelf 7 is provided with a display screen 71, a control device 72 and a navigation device 73, and the control device 72 controls the expansion and contraction of the support rod 5; the control device 72 is displayed on the display screen 71 control panel, the navigation page of the navigation device 73; when climbing stairs, the support rod 5 is adjusted by the control device 72 to be positioned at the rear side of the wheelchair, and is in contact with the ground. Sliding will cause the wheelchair to be unstable, and there is a tendency to slide downward. At this time, the support rod 5 plays a certain supporting role on the wheelchair, effectively preventing the wheelchair from sliding down and playing a stabilizing effect; the brake member 9 can be manually controlled, It can also be controlled by the control device 72. During the downhill process, the friction between the brake member 9 and the front wheel 10 can be adjusted by the control device 72, so as to slow down the downhill speed of the wheelchair and improve the safety of the wheelchair; 73 can observe road conditions in real time, and can remind road conditions and traffic lights, further improving the safety of wheelchairs.

Further, referring to the accompanying drawing 5, the control device 72 includes a power supply unit 721, a telescopic unit 722 and a brake unit 723; the power supply unit 721 provides electric energy for the control device 72 and the navigation device 73, and the telescopic unit 722 controls the expansion and contraction of the support rod 5. When the support rod 5 is required to support the wheelchair, the telescopic unit 722 controls the extension of the support rod 5, and the support rod 5 can be retracted when it is not needed; the brake The unit 723 controls the friction between the brake member 9 and the front wheel 10 to adjust the speed of the wheelchair.

Further, the armrest 8 is further provided with a socket 81 for charging the power supply unit 721 .

In this article, the orientation words such as front, rear, upper, and lower involved are defined by the parts in the drawings and the positions between the parts in the drawings, just for the clarity and convenience of expressing the technical solution. It should be understood that the use of the location words should not limit the scope of protection claimed in this application.

In the case of no conflict, the above-mentioned embodiments and features in the embodiments herein may be combined with each other.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (9)

1. A wheelchair for climbing stairs manually is characterized in that: it comprises a handwheel, a turret, an auxiliary wheel and a roller; the handwheel is coaxially connected with the roller, and its diameter is smaller than the diameter of the roller; the auxiliary wheel passes The turret is fixed on the hand wheel; the turret includes a sphere part, a cross bar and a side bar, a through hole is arranged in the center of the sphere part, and the side bars are respectively fixed on both symmetrical sides of the sphere part. The rod is fixed between the two side rods; the hand wheel passes through the through hole, the auxiliary wheel is fixed on the cross bar, and the auxiliary wheel is driven by rotating the spherical part of the turret turn. 2. A manual stair climbing wheelchair according to claim 1, characterized in that: the upper and lower surfaces of the through hole are symmetrically provided with depressions, the corresponding position of the handwheel is provided with protrusions, and the protrusions are aligned with the The groove engages and fixes the turret on the handwheel. 3. A manual stair climbing wheelchair according to claim 2, characterized in that: the turret can rotate 360° around the handwheel, and the direction of rotation is perpendicular to the forward direction of the rollers, so there is no need to climb stairs , drive the auxiliary wheel to rotate to the inside of the hand wheel; when it is necessary to climb stairs, drive the auxiliary wheel to rotate to the outside of the hand wheel. 4. A wheelchair for climbing stairs manually according to claim 2, characterized in that: the distance between two adjacent auxiliary wheels is 25cm-28cm; the inner diameter of the handwheel is 51cm, and the outer diameter is 56cm. 5 . The wheelchair for climbing stairs manually according to claim 4 , wherein the distance between two adjacent auxiliary wheels is 27.88 cm. 6. A manual stair climbing wheelchair according to claim 1, characterized in that: it also includes a support rod, a backrest, a shelf and a handrail; the support rod is telescopically fixed on the two side brackets on the backrest The shelf is located between the two armrests, one end is fixed on one armrest, and the other end is movably fixed on the other armrest; a display screen, a control device and a navigation device are arranged on the shelf, The control device controls the expansion and contraction of the support rod; the control panel of the control device and the navigation page of the navigation device are displayed on the display screen. 7. A manual stair climbing wheelchair according to claim 6, characterized in that: it also includes a brake and a front wheel, the brake is connected to the front wheel; the brake is manually controlled or controlled The device controls the friction between it and the front wheel. 8. A manual stair climbing wheelchair according to claim 6, characterized in that: the control device includes a power supply unit, a retractable unit and a brake unit; the power supply unit provides electric energy for the control device and the navigation device , the telescopic unit controls the expansion and contraction of the support rod; the brake unit controls the friction between the brake member and the front wheel. 9 . The wheelchair for climbing stairs manually according to claim 8 , wherein a socket for charging the power supply unit is also provided on the armrest. 10 .