A rowing wheelchair and usage thereof

Abstract

The main problem solved by the present invention is how to make the wheelchair pushable and safe to use. A rowing wheelchair, characterized by comprising wheels, axles, seats, gears, rowing rods, and a reset mechanism. The axles are the rotating shafts of the wheels, the seats are located on the axles, the gears and wheels are coaxial, the two are relatively fixed and rotate synchronously, there are two gears, distributed on the left and right sides of the wheelchair, the lower end of the rowing rod is connected to the axle through a rotating shaft, the axial directions of the rotating shaft and the axle are perpendicular to each other, the upper end of the rowing rod is higher than the wheel, and the sides of the rowing rod and the gear are both provided with teeth. The beneficial effect is that the upper end of the rowing rod is higher than the wheel. Firstly, when using the wheelchair, the human body can sit on the wheelchair and row the rowing rod back and forth by holding the rowing rod, and there is almost no need to bend over, which is convenient for exerting force. Secondly, the distance between the upper end of the rowing rod and the axle is large, which is relatively labor-saving. Finally, when using the wheelchair, the height of the hand is always higher than the wheel, eliminating the safety hazard of the wheel hitting the hand.

Description

Technical Field

[0001] The present invention relates to the technical field of wheelchairs, in particular to a rowing wheelchair. Background Art

[0002] Existing wheelchairs usually have a steel ring outside the wheel, and the wheel is pushed to rotate by holding the steel ring. First, because the height of the steel ring is lower than the wheel, the hand position is low when using it, and it is difficult to exert force. Secondly, because the diameter of the steel ring is smaller than the wheel, it is more difficult to push. Finally, when holding the steel ring, the hand may be hit by the wheel, which has certain safety hazards. Summary of the invention

[0003] The main problem solved by the present invention is how to make the wheelchair easier to push and safer to use.

[0004] A rowing wheelchair, characterized in that it includes wheels, axles, a seat, gears, a rowing rod, and a reset mechanism, wherein the axle is the rotating axis of the wheel, the seat is located on the axle, the gear and the wheel are coaxial, the two are relatively fixed and rotate synchronously, there are two gears, which are distributed on the left and right sides of the wheelchair, there are two rowing rods, which are respectively located on the left and right sides of the wheelchair, the lower end of the rowing rod is connected to the axle through a rotating shaft, the axial directions of the rotating shaft and the axle are perpendicular to each other, the upper end of the rowing rod is higher than the wheel, the side surfaces of the rowing rod and the gear are both provided with teeth, the rowing rod and the teeth of the gear are matched, the reset mechanism includes a spring, the spring is located between the side surfaces of the rowing rod and the gear, the axial directions of the spring and the rotating shaft are perpendicular to each other, when in use, the rowing rod is held and pressed inwardly to make the rowing rod rotate around the rotating shaft, and at the same time the spring is compressed, the rowing rod moves inwardly, so that the rowing rod meshes with the teeth of the gear, and at the same time the rowing rod is rowed forward or backward to drive the gear and the wheel to rotate, thereby pushing the wheelchair to move.

[0005] The beneficial effect is that the upper end of the rowing rod is higher than the wheel. First, when using the wheelchair, the human body can hold the rowing rod and row it forward and backward, almost without bending over, which is convenient for exerting force. Secondly, the distance between the upper end of the rowing rod and the wheel axle is large, which is relatively labor-saving. Finally, when using it, the height of the hand is always higher than the wheel, eliminating the safety hazard of the wheel hitting the hand. In addition, the hand holding the rowing rod and pressing it inward, that is, the hand holding the rowing rod is contracted toward the inside of the human body, which is in line with the human body's force. Moreover, the hand only needs to hold the rowing rod all the time, and there is no need to switch the position of the hand holding the steel ring like the prior art. It is intuitive, convenient, clean and hygienic to use. At the same time, rowing the rowing rod forward or backward can push the wheelchair to move forward and backward, that is, it can move forward or backward, which is convenient to use. In addition, by adjusting the rowing speed of the left and right rowing rods of the wheelchair, the wheelchair can be controlled to turn (for example, the left rowing rod is rowed faster, and the wheelchair turns right), and turning is very convenient. According to the definition of Baidu Encyclopedia, a gear refers to a mechanical element with teeth on the rim that can continuously mesh and transmit motion and power.

[0006] The reset mechanism also includes a sleeve, which has a cover on one side of the gear, and the spring is located in the sleeve. The spring presses against the cover so that the cover remains in contact with the gear. The rowing rod is provided with a gap, and the gap has the same cross-sectional shape as the sleeve. The sleeve is located on one side of the rowing rod and is always located in the gap, and when the rowing rod is pressed inward, the sleeve can pass through the gap; when the rowing rod is pressed inward by hand, the spring is compressed, the rowing rod is meshed with the teeth of the gear, and rowing the rowing rod can drive the wheel to rotate; after the rowing rod stops being pressed inward, the spring stretches, so that there is a certain distance between the rowing rod and the teeth of the gear, so that the rowing rod can be reset in the opposite direction in time to prepare for the next rowing.

[0007] The beneficial effect is that after the rowing rod stops pressing inward, the teeth of the rowing rod and the gear lose engagement, and the rowing rod can row without resistance, which makes it easy to quickly reset the rowing rod in the opposite direction to prepare for the next rowing; at the same time, when the wheelchair wheels rotate by inertia (for example, the wheelchair goes downhill), the rowing rod stops pressing inward, and there is a certain distance between the teeth of the rowing rod and the gear to avoid affecting the inertial rotation of the wheel. The spring is always located in the sleeve, and the sleeve can prevent the spring from lateral deformation when there is relative sliding between the spring and the gear during use, so that the axial direction of the spring and the shaft are always perpendicular to each other, ensuring that the reset mechanism can always operate stably. The relative sliding between the spring and the gear occurs when the rowing rod is not pressed inward thoroughly and slides prematurely, and the rowing rod and the gear slide relative to each other due to the loose engagement between the teeth of the rowing rod and the gear.

[0008] The side surface of the sleeve is provided with a longitudinal groove, and the position of the longitudinal groove corresponds to the interval between the holes on the rowing rod.

[0009] The beneficial effect is that, when in use, the longitudinal groove passes along the intervals between the pores, which can ensure that the sleeve can stably pass through the pores without lateral deformation, and the longitudinal groove makes the pore structure simple and stable, and the production cost is low.

[0010] The lower end of the rowing rod has two forks, the two forks are respectively located on both sides of the wheel axle, and the rotating shaft passes through the wheel axle and the two forks; the gear is located on the outside of the wheel.

[0011] The beneficial effect is that the two forks make the structure and force of the rowing pole more stable, and it is not easy to deform laterally when in use. The gear is located outside the wheel, which, on the one hand, facilitates the installation and rowing of the rowing pole, and on the other hand, reduces the wheelbase, making the overall structure more compact.

[0012] It also includes a limiting ring, which is installed on the seat. The rowing rod passes through the limiting ring, and the limiting ring limits the forward and backward rowing range of the rowing rod; the seat is provided with an armrest, and the limiting ring is installed on the outer side of the armrest.

[0013] The beneficial effect is that the limiting ring limits the forward and backward rowing range of the rowing rod, preventing the rowing rod from falling forward or backward to the ground.

[0014] It also includes a rubber sleeve, which is matched with the tooth shape of the rowing rod. The rubber sleeve is sleeved on the teeth of the rowing rod, and the rubber sleeve can be disassembled and replaced.

[0015] The beneficial effect is that since the rowing rod and the teeth of the gear need to contact and rub frequently, the rubber sleeve can increase the friction force and reduce the friction damage between the teeth of the rowing rod and the gear. Timely disassembly and replacement of the rubber sleeve can significantly increase the service life of the rowing rod and the gear.

[0016] The method for using the wheelchair is characterized by comprising the following steps:

[0017] A person sits on the wheelchair, holds the rowing bar and presses it inward, so that the rowing bar moves inward, and the rowing bar meshes with the teeth of the gear;

[0018] When you need to move forward, you row the rowing bar forward to drive the rowing bar cover to move, and together drive the gears and wheels to rotate, pushing the wheelchair forward; when you need to move backward, you row the rowing bar backward to push the wheelchair backward;

[0019] When the inertial motion of the wheelchair needs to be maintained, the rowing bar stops being pressed inwards, so that there is a certain distance between the rowing bar and the teeth of the gear, so as to avoid affecting the inertial rotation of the wheel.

[0020] The beneficial effects are as follows: firstly, when using the wheelchair, the person can just hold the rowing pole and row it forward and backward, and there is almost no need to bend over, which is convenient for exerting force; secondly, the distance between the upper end of the rowing pole and the wheel axle is large, which is relatively labor-saving; finally, when using the wheel, the height of the hand is always higher than the wheel, eliminating the safety hazard of the wheel hitting the hand. In addition, the hand holding the rowing pole and pressing it inward, that is, the hand holding the rowing pole is retracted toward the inside of the human body, which is in line with the human body's force exertion, and the hand only needs to hold the rowing pole all the time, and there is no need to switch the position of the hand holding the steel ring as in the prior art. It is intuitive, convenient, clean and hygienic to use. At the same time, rowing the rowing pole forward or backward can push the wheelchair forward and backward, that is, it can move forward or backward, which is convenient to use.

[0021] After completing each forward or backward stroke, stop pressing the pole inward and promptly reset the pole in the opposite direction to prepare for the next stroke.

[0022] The beneficial effect is that after the rowing rod stops pressing inward, the rowing rod and the gear lose engagement, and the rowing rod moves without resistance, making it easy to quickly reset the rowing rod in the opposite direction to prepare for the next rowing; at the same time, when the wheelchair wheels rotate by inertia, the rowing rod stops pressing inward, and there is a certain distance between the rowing rod and the teeth of the gear to avoid affecting the inertial rotation of the wheels.

[0023] When braking is required, hold the paddle and press it inward with less force than normal, so that the paddle part moves inward, causing the paddle to contact the teeth of the gear, generating friction resistance.

[0024] The beneficial effect is that the rowing rod also has a braking function, which makes the operation more convenient. At the same time, the arrangement of other braking devices can be omitted, the overall structure is simpler, and the production cost can be reduced.

[0025] When the wheelchair needs to turn right, the rowing speed of the left side of the wheelchair can be greater than that of the right side; when the wheelchair needs to turn left, the rowing speed of the right side of the wheelchair can be greater than that of the left side.

[0026] The beneficial effect is that the wheelchair can be controlled to turn by adjusting the rowing speed of the left and right rowing bars, and the turning is very convenient. It should be noted that the rowing speed of the rowing bar on one side is greater than that of the other side, including the case where the rowing speed of the other side is zero and the direction is opposite. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 . Schematic diagram of the overall structure of the present invention;

[0028] Figure 2 . Schematic diagram of the enlarged structure of the local area of ​​the gear;

[0029] Figure 3 . Schematic diagram of the enlarged structure of the tooth area of ​​the rowing rod;

[0030] Figure 4 .Schematic diagram of the rowing rod structure;

[0031] Figure 5 .Schematic diagram of the assembly structure of the paddle and reset mechanism;

[0032] Figure 6 .Schematic diagram of the reset mechanism structure

[0033] Figure 7 .Schematic diagram of the structure when holding the rowing pole and pressing inwards;

[0034] Figure 8 . Schematic diagram of the enlarged structure of the local area of ​​the gear when the rowing rod is pressed inward;

[0035] Fig. 9 .Schematic diagram of the structure when holding the rowing pole, pressing inwards and rowing forward.

[0036] In the figure: 1. wheel, 2. axle, 3. seat, 4. gear, 5. paddle, 51. fork, 52. gap, 53. tooth, 6. shaft, 7. reset mechanism, 71. spring, 72. sleeve, 73. cover, 8. limit ring, 31. armrest. DETAILED DESCRIPTION

[0037] Example

[0038] like Figure 1-9 As shown, a rowing wheelchair is characterized in that it includes wheels, axles, a seat, gears, a rowing rod, and a reset mechanism, wherein the axle is the rotating axis of the wheel, the seat is located on the axle, the gear and the wheel are coaxial, the two are relatively fixed and rotate synchronously, there are two gears, which are distributed on the left and right sides of the wheelchair, there are two rowing rods, which are respectively located on the left and right sides of the wheelchair, the lower end of the rowing rod is connected to the axle through a rotating shaft, the axial directions of the rotating shaft and the axle are perpendicular to each other, the upper end of the rowing rod is higher than the wheel, the side surfaces of the rowing rod and the gear are both provided with teeth, the rowing rod and the teeth of the gear are matched, the reset mechanism includes a spring, the spring is located between the side surfaces of the rowing rod and the gear, the axial directions of the spring and the rotating shaft are perpendicular to each other, when in use, the rowing rod is held and pressed inwardly to make the rowing rod rotate around the rotating shaft, and at the same time the spring is compressed, the rowing rod moves inwardly, so that the rowing rod meshes with the teeth of the gear, and at the same time the rowing rod is rowed forward or backward to drive the gear and the wheel to rotate, thereby pushing the wheelchair to move.

[0039] The reset mechanism also includes a sleeve, which has a cover on one side of the gear, and the spring is located in the sleeve. The spring presses against the cover so that the cover remains in contact with the gear. The rowing rod is provided with a gap, and the gap has the same cross-sectional shape as the sleeve. The sleeve is located on one side of the rowing rod and is always located in the gap, and when the rowing rod is pressed inward, the sleeve can pass through the gap; when the rowing rod is pressed inward by hand, the spring is compressed, the rowing rod is meshed with the teeth of the gear, and rowing the rowing rod can drive the wheel to rotate; after the rowing rod stops being pressed inward, the spring stretches, so that there is a certain distance between the rowing rod and the teeth of the gear, so that the rowing rod can be reset in the opposite direction in time to prepare for the next rowing.

[0040] The side surface of the sleeve is provided with a longitudinal groove, and the position of the longitudinal groove corresponds to the interval between the holes on the rowing rod.

[0041] The lower end of the rowing rod has two forks, the two forks are respectively located on both sides of the wheel axle, and the rotating shaft passes through the wheel axle and the two forks; the gear is located on the outside of the wheel.

[0042] It also includes a limiting ring, which is installed on the seat. The rowing rod passes through the limiting ring, and the limiting ring limits the forward and backward rowing range of the rowing rod; the seat is provided with an armrest, and the limiting ring is installed on the outer side of the armrest.

[0043] It also includes a rubber sleeve, which is matched with the tooth shape of the rowing rod. The rubber sleeve is sleeved on the teeth of the rowing rod, and the rubber sleeve can be disassembled and replaced. Example

[0044] The method for using the wheelchair is characterized by comprising the following steps:

[0045] A person sits on the wheelchair, holds the rowing bar and presses it inward, so that the rowing bar moves inward, and the rowing bar meshes with the teeth of the gear;

[0046] When you need to move forward, you row the rowing bar forward to drive the rowing bar cover to move, and together drive the gears and wheels to rotate, pushing the wheelchair forward; when you need to move backward, you row the rowing bar backward to push the wheelchair backward;

[0047] When the inertial motion of the wheelchair needs to be maintained, the rowing bar stops being pressed inwards, so that there is a certain distance between the rowing bar and the teeth of the gear, so as to avoid affecting the inertial rotation of the wheel.

[0048] After completing each forward or backward stroke, stop pressing the pole inward and promptly reset the pole in the opposite direction to prepare for the next stroke.

[0049] When braking is required, hold the paddle and press it inward with less force than normal, so that the paddle part moves inward, causing the paddle to contact the teeth of the gear, generating friction resistance.

[0050] When the wheelchair needs to turn right, the rowing speed of the left side of the wheelchair can be greater than that of the right side; when the wheelchair needs to turn left, the rowing speed of the right side of the wheelchair can be greater than that of the left side.

Claims

1. A rowing wheelchair, characterized in that: The wheelchair comprises a wheel, an axle, a seat, a gear, a rowing rod and a reset mechanism, wherein the axle is the rotating axis of the wheel, the seat is located on the axle, the gear and the wheel are coaxial, the two are relatively fixed and rotate synchronously, there are two gears, which are distributed on the left and right sides of the wheelchair, there are two rowing rods, which are respectively located on the left and right sides of the wheelchair, the lower end of the rowing rod is connected to the axle through a rotating shaft, the axial directions of the rotating shaft and the axle are perpendicular to each other, the upper end of the rowing rod is higher than the wheel, the side surfaces of the rowing rod and the gear are provided with teeth, the rowing rod and the teeth of the gear are matched, the reset mechanism comprises a spring, the spring is located between the side surfaces of the rowing rod and the gear, the axial directions of the spring and the rotating shaft are perpendicular to each other, when in use, the rowing rod is held and pressed inwardly to make the rowing rod rotate around the rotating shaft, and at the same time the spring is compressed, the rowing rod moves inwardly, so that the rowing rod meshes with the teeth of the gear, and at the same time the rowing rod is rowed forward or backward to drive the gear and the wheel to rotate, thereby pushing the wheelchair to move. The reset mechanism also includes a sleeve, which has a cover on one side of the gear, and the spring is located in the sleeve. The spring presses against the cover so that the cover remains in contact with the gear. The rowing rod is provided with a gap, and the gap has the same cross-sectional shape as the sleeve. The sleeve is located on one side of the rowing rod and is always located in the gap, and when the rowing rod is pressed inward, the sleeve can pass through the gap; when the rowing rod is pressed inward by hand, the spring is compressed, the rowing rod is meshed with the teeth of the gear, and rowing the rowing rod can drive the wheel to rotate; after the rowing rod stops being pressed inward, the spring stretches, so that there is a certain distance between the rowing rod and the teeth of the gear, so that the rowing rod can be reset in the opposite direction in time to prepare for the next rowing.

2. A rowing wheelchair according to claim 1, characterized in that: The side surface of the sleeve is provided with a longitudinal groove, and the position of the longitudinal groove corresponds to the interval between the holes on the rowing rod.

3. A rowing wheelchair according to claim 1, characterized in that: The lower end of the rowing rod has two forks, the two forks are respectively located on both sides of the wheel axle, and the rotating shaft passes through the wheel axle and the two forks; the gear is located on the outside of the wheel.

4. A rowing wheelchair according to claim 1, characterized in that it also includes a limit ring, which is installed on the seat, the rowing rod passes through the limit ring, and the limit ring limits the forward and backward rowing range of the rowing rod; the seat has armrests, and the limit ring is installed on the outside of the armrests.

5. A rowing wheelchair according to claim 1, characterized in that: It also includes a rubber sleeve, which is matched with the tooth shape of the rowing rod. The rubber sleeve is sleeved on the teeth of the rowing rod, and the rubber sleeve can be disassembled and replaced.

6. The method of using a rowing wheelchair as claimed in claim 1, characterized in that: The steps include: A person sits on the wheelchair, holds the rowing bar and presses it inward, so that the rowing bar moves inward, and the rowing bar meshes with the teeth of the gear; When you need to move forward, you row the rowing bar forward to drive the rowing bar cover to move, and together drive the gears and wheels to rotate, pushing the wheelchair forward; when you need to move backward, you row the rowing bar backward to push the wheelchair backward; When the inertial motion of the wheelchair needs to be maintained, the rowing bar stops being pressed inwards, so that there is a certain distance between the rowing bar and the teeth of the gear, so as to avoid affecting the inertial rotation of the wheel.

7. The method for using a rowing wheelchair according to claim 6, characterized in that: After completing each forward or backward stroke, stop pressing the pole inward and promptly reset the pole in the opposite direction to prepare for the next stroke.

8. The method for using a rowing wheelchair according to claim 6, characterized in that: When braking is required, hold the paddle and press it inward with less force than normal, so that the paddle part moves inward, causing the paddle to contact the teeth of the gear, generating friction resistance.

9. The method for using a rowing wheelchair according to claim 6, characterized in that: When the wheelchair needs to turn right, the rowing speed of the left side of the wheelchair can be greater than that of the right side; when the wheelchair needs to turn left, the rowing speed of the right side of the wheelchair can be greater than that of the left side.

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