The present invention relates to a vehicle for the aged and the disabled, and more particularly to a super energy-saving solar powered wheel chair with an adjustable sunshine angle.
Presently, the electric wheel chair has a serious power wasting problem internationally, and one of the resolutions is to use solar energy. Two inventions about applying solar energy to electric wheel chairs have been filed for patents. However, (1) a solar battery is not mature enough, that is, it is heavy, expensive, and has a low efficiency and a low elasticity; and (2) the structure of the electric wheel chair is not mature, that is, it is too power wasting, such that there is no successful products in the market yet. Because the two inventions cannot solve a basic contradiction, that is, the electric energy provided by the solar battery does not match an electric energy required by the electric wheel chair seriously. An area on a right upper part of the electric wheel chair capable of being used to mount the solar battery is maximally 0.8 m2, and if the area barely exceeds 0.8 m2, the solar battery may hit the people from front or back, or from left or right. According to an efficiency of the current solar battery, the solar battery of 0.8 m2 can only provide the electric energy of 80 W. However, the electric energy required by the current international common electric wheel chair is hundreds of watts, and a power of a driving motor is usually 300 W×2 or 320 W×2. Due to the contradiction between supply and demand with such a great disparity, definitely, no successful solar powered wheel chair comes into the market.
However, till the year of 2008, the situation is greatly changed. In one aspect, a new-type thin solar battery is about to come into the market, which has a light weight, an excellent elasticity, and a price as low as that of the thermal power. In another aspect, a high power-saving electric wheel chair is proposed. The sample of the invention is highly power saving, such that although a silicon plate battery is still adopted, the actual effect of supper energy saving is obtained. If a new-type thin solar battery is further adopted, it is possible to create an electric wheel chair being more practical being foldable, more efficient having an adjustable sunshine angle, more energy saving being five times of the energy saving performance of internationally certificated products, and more inexpensive.
The present invention is directed to a super energy-saving solar powered wheel chair with an adjustable sunshine angle, to eliminate disadvantages of the current electric wheel chairs.
The present invention provides an electric wheel chair, which includes a wheel chair frame, stand pipes, horizontal support pipes, and main stand pipes. Back wheels, a front steering wheel, and a front universal wheel disposed on a lower part of the wheel chair frame, and a left arm-rest pipe, a right arm-rest pipe, and arm-rests disposed between the stand pipes and the main stand pipes. The front ends of the left and the right arm-rest pipes are bent as elbows, a hand control direction device is installed on the left elbow, and a speed-adjusting turning handle and a hand pull brake handle integrated in a two-in-one manner is mounted on the right elbow. The electric wheel chair is characterized in that the sunshine angle is adjustable and the electric wheel chair is super energy saving.
Two double-vertical plates are respectively fixedly connected to the two main stand pipes, and another two double-vertical plates are respectively fixedly connected to the elbows of the left and the right arm-rest pipes and the stand pipes. Fixing sleeves are respectively connected to the two pairs of double-vertical plates, and 4 lift pipes are inserted into the four sleeves. A connection hole exists between the lift pipe and the sleeve, and the lift pipe and the sleeve are connected through a spring plunger, such that the lift pipes are flexibly lifted and located. During traveling, the sunshine angle may be adjusted respectively according to six directions, to maximize the solar energy charging current to battery. In the six directions, front and back directions are back inclined, non inclined, front inclined, and left and right directions are left inclined, non inclined, and right inclined. Two batteries respectively hung on the left and the right of the wheel chair which are used for backup and are charged during traveling. One battery may be fully charged in 5 hours, and the other battery is charged in 3 hours for storage. Left and right horizontally mounted connection pipes are respectively connected between top ends of the two lift pipes on the left side and between top ends of the two lift pipes on the right side, in which the lift pipe and the horizontally mounted connection pipes are connected through a universal spindle coupling. A new-type thin solar battery plate, not only covers on the left and the right horizontally mounted connection pipes, but also extends nylon zipper elastic straps from both sides. After passing round the left and the right horizontally mounted connection pipes, each pair of the elastic straps are locked through the nylon zipper, such that the new-type thin solar battery is elastically bound and connected. When the wheel chair frame is unfolded, the new-type thin solar battery is tightened from the two sides by the elastic straps; and while the wheel chair frame is folded, the new-type thin solar battery is released, and is folded together. A power supply line connection device is disposed under the new-type thin solar battery, and a power supply line leads to a controller box from the connection device, and is connected to a power connection of a battery box through a charging plug.
In addition, in the present invention, the new-type thin solar battery may be replaced with a low-power silicon plate solar battery, the silicon plate solar battery is integrally mounted on the left and the right horizontally mounted connection pipes, screws are aligned with mount holes of the silicon plate battery for fastening the silicon plate battery, and the sunshine angle may be adjusted according to the six directions by using the four lift pipes, to maximize the charging current. The connection of the power supply line is also the same, in which the power supply line leads to the charging controller through the connection device, and is connected to the power connection of the battery box through the charging plug, except that the silicon plate battery cannot be folded and is mounted in a manner of rigid connection instead of elastic connection.
The present invention is a super energy-saving foldable electric wheel chair with an adjustable sunshine angle and adopting a new-type thin solar battery, and thereby having advantages of being highly power saving, having a low weight, being capable of traveling for a long distance, having a low cost, being foldable, having a small battery, being capable of entering an elevator and entering houses by driving, having a strong grade climbing capability, and having a speed between 7-10 kilometers, such that the wheel chair is quite suitable for being used by the aged and the disabled.
The present invention provides a super energy-saving solar powered wheel chair with an adjustable sunshine angle, and a solar battery used by the wheel chair includes two types: 1. a new-type thin solar battery foldable; and 2. a low-power silicon plate solar battery not foldable. The electric wheel chair includes a wheel chair frame 1 as shown in
In four seasons of each year and in the morning, at noon, and in the afternoon of each day, the position of the sun changes, such that the adjustment of the sunshine angle in response to the change is quite meaningful for improving a charging efficiency. Daily charging test verifies that as soon as the sunshine angle is adjusted, a charging current displayed on an ampere meter is immediately increased by 10%-20%, and an efficiency of a modern solar battery is merely 15%. The continuous adjustment of the sunshine angle in response to the changes of the position of the sun is just the most important advantage of the present invention, because only the electric wheel chair has more strong points than other vehicles: its speed is low, the changes of the traveling direction is less, the environment is clear, and the manual adjustment may be performed at any moment. The charging efficiency is approximately 30% higher than that of a household water heater being fixed at an angle of 45 degrees. Particularly, at noon of summer and autumn, the stronger the sunshine is, the more difficult for the solar battery fixed at the angle of 45 degrees to entirely receive the vertical incident solar rays. On the contrary, if the adjustable sunshine angle is adopted, the solar battery may basically entirely receive the vertical incident solar rays when lying without fixed angle of 45 degree.
Left and right horizontally mounted connection pipes 35 are respectively connected between top ends of the two lift pipes 34.1 on the left side and between top ends of the two lift pipes 34.1 on the right side, in which the lift pipe 34.1 and the horizontal mount connection pipe 35 are connected through a universal spindle coupling 35.1, and the connection manner is as shown in
The new-type power-saving thin solar battery shall be accompanied by power-saving driving device and braking device, as shown in
For the driving device, a speed adjusting turning handle 14 is installed on the right elbow 12, there are two mounting vertical boards 19 of the rear wheels at the lower end of the left and right main vertical pipes 1.3 respectively, the rear wheels 3 with motors 30 are secured on the vertical boards 19 by bolts and nuts, the said motors 30 are DC and brushless motors with stepless adjustable speed, low rotation speed, and high torque, the housing of the motors 30 are integrated with the steel wheel plates 31, so as the two motors 30 can directly drive the two real wheels 3;
For the braking device, two disc brakes 20 are installed on the left and right rear wheels, the disc brake includes a disc brake sheet 21, a brake clamp 22 and a brake rod 23, the disc brake sheet 21 is installed by the side of the motor 30 by means of tightly screwing the female screw of the disc brake sheet 21 in the male screw on the end-cover of the motor 30, the brake clamp 22 and the brake rod 23 are fixed on the vertical board 19 via the connecting plate 27 with screws; a hand pull brake handle 15 is installed on the right elbow 12; the two disc brakes 20 are connected to the brake handle 15 through a delta-shaped conversion plate 26 via a braking steel wire, the upper end of the delta-shaped conversion plate 26 is connected to the brake handle 15 via the main steel wire 24, the left and right lower ends of the delta-shaped conversion plate 26 are connected to the left and right brake rods 23 via the left and right branch steel wires 25 respectively, by means of a single hand to pull brake handle 15 or by means of a small electric device to pull the main steel wire 24, the brake rods 23 are tightly pulled so that the two brake clamps 22 tightly clip the two brake sheets 21, and the two rear wheels 3 are braked simultaneously;
The foldable new-type thin solar battery charging device needs to match with the foldable electric wheel chair frame. As shown in
As shown in
As shown in
As shown in
In addition, an intellectual control rod 40 is installed on the right elbow 12 referring to
Filing Document | Filing Date | Country | Kind | 371c Date |
---|---|---|---|---|
PCT/CN2008/070574 | 3/25/2008 | WO | 00 | 9/24/2010 |