JP2013184045A - Electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electric vehicle that travels over a step and freely travels in a 360-degree direction.SOLUTION: An electric vehicle includes: four pairs of small-diameter wheels turnably arranged in spindles on a lower surface of an undercarriage, and capable of freely changing a traveling direction; a first direct current motor for driving the wheels via a reduction gear and allowing the wheels to travel; a second direct current motor for driving the direction of the wheels via a first manual electric switch so as to freely change the traveling direction of the four pairs of wheels; an in-vehicle storage cell for supplying power to the first and second direct current motors; and a device for drive-controlling the four pairs of traveling wheels via a second manual electric switch so as to allow the wheels to float from a road surface and then fall in order to attain traveling over a step on a traveling road surface.

Description

It is used as a driving means for an electric vehicle such as a wheelchair.

There is a known means as an electric wheelchair.

An electric wheelchair is a substitute for a leg. Scientific analysis of leg performance results in the following four performances. The first can freely rotate left and right on the spot. The second can be stepped in any direction. Thirdly, it can travel according to the turning of the road. Fourth, you can step over the steps. A conventional electric vehicle has only the third performance described above. It is necessary to solve the first, second and fourth problems.

Four sets of traveling wheels with a small diameter mounted on a second support shaft that is rotatably mounted around a first support shaft that protrudes vertically on the lower surface of the chassis, and at least two of the wheels A plurality of first DC motors that are mounted and drive the wheels via reduction gears, and the second support shaft are driven to indicate the traveling directions of the wheels by the symbols 2a, 2b, 2c, and 2d in FIG. The second driven through the first manual electric switch so as to be localized and held in the arrow direction and the arrow direction indicated by symbols 12a, 12b, 12c and 12d and the arrow direction indicated by symbols 11a, 11b, 11c and 11d A DC motor, an in-vehicle storage battery that supplies power to the first and second DC motors, and a second manual so that the four traveling wheels float above the road surface and then fall so as to get over the step on the road surface. A device that controls driving through an electrical switch; Those that are more configurations.

Even if the wheel diameter is reduced, the step can be overcome, so that the traveling direction of the wheel can be freely changed within a range of 360 degrees. Therefore, since the traveling direction of the electric vehicle can also be changed within a range of 360 degrees, an electric vehicle having the same traveling action as a human leg can be obtained. Therefore, an effective means can be obtained by applying to an electric wheelchair.

Explanatory drawing of a structure of this invention apparatus. Explanatory drawing of operation | movement of this invention apparatus. Explanatory drawing of the change means of the running direction of this invention apparatus. The block diagram of a structure of this invention apparatus. The top view which shows the structure of the vertical motion apparatus of the wheel 7b.

1st effect | action It can be freely rotated right and left on the spot by a manual electric switch.
Second action Can travel in either direction.
Third effect The vehicle can travel along a road like a conventional electric vehicle.
4th effect | action It can step over a level | step difference.

Next, the present invention will be described with reference to examples. FIG. 1 is a plan view of the device of the present invention as seen from the back side. The housings 3a, 3b, 3c, and 3d are rotatably supported by bearings that are rotatably crowned on the support shafts 4a, 4b, 4c, and 4d planted on the chassis 1. The casings 3a, 3b, 3c, and 3d are each mounted with a DC motor, and are configured to drive the wheels 2a, 2b, 2c, and 2d via reduction gears. In this embodiment, the drive motors are provided on all the wheels, but the object can be achieved only by mounting the drive motors on the two wheels.

FIG. 3 is an explanatory diagram for explaining means for causing the chassis 1 to travel. Dotted lines 2a, 2b, 2c, 2d are wheels indicated by the same symbols in FIG. FIG. 3 shows the case where the support shafts 4a, 4b, 4c and 4d in FIG. 1 are on the outer peripheral surface of the wheel. In FIG. 3, the directions of the wheels are 2a, 2b,. . . In this case, the chassis 1 goes straight in the direction of arrow f or in the opposite direction. When the direction of only the wheels 2a and 2b is changed to the left and right by the same angle, the chassis 1 travels with the course changed to the left and right. When the direction of each wheel is changed so as to be in the tangential direction of the circumference including the support shafts 4a, 4b, 4c, and 4d in FIG. 1, the wheels become positions of dotted lines 12a, 12b, 12c, and 12d, and the arrow g The chassis 1 rotates in the direction, that is, left and right.

If each wheel is in the direction of dotted lines 11a, 11b, 11c, and 11d, the chassis 1 travels in the direction of arrow h. As understood from the above description, the chassis 1 has wheels 2a, 2b,. . . It is possible to travel in any direction by changing the direction. Next, the means for stepping over the step will be described with reference to FIG. In FIG. 2, symbol 6 indicates the road surface of the traveling electric vehicle, and the projecting portions 6a and 6b indicate portions having steps. Wheels 2a and 2c are fixed to the rotating shafts 5a and 5c on the bottom surface of the chassis 1 and are driven by being decelerated by an electric motor as described with reference to FIG.

The chassis 1 is provided with support shafts 9a and 10a, and supports the levers 8a, 8b and 8c and the levers 8d, 8e and 8f indicated by dotted lines so as to be rotatable. Wheels 7a and 7b are rotatably supported on the free ends of the levers 8a and 8d, respectively. Although the wheels 7a and 7b are configured to move up and down in the directions of arrows b and c, since both are the same configuration, the operation of the wheel 7b will be described as an example with reference to FIG. In FIG. 5, the lever 18 is configured to rotate left and right as indicated by an arrow k by a support shaft 18a driven by a motor through a reduction gear. Accordingly, the lever 8f moves to the left and right via the support shaft 18b.

The support shaft 10b provided on the chassis 1 is rotated by the levers 8e and 8f and the support shaft 10a to the left and right through the movement of the lever 8f. Accordingly, the wheel 7b is moved up and down in the direction of the arrow c. For the same reason, the wheel 7a shown in FIG. 2 is moved up and down in the direction of the arrow b via the levers 8a, 8b and 8c by the left and right movement of the lever 8c in the direction of the arrow d. By closing the manual electric switch, the lever 18 in FIG. 5 is configured to reciprocate and stop by a predetermined angle by the electric motor, so that the wheels 7a and 7b also move up and down correspondingly. The member indicated by the dotted line 10 in FIG. If the wheel 7a is moved up and down as described above when it contacts the step 6a in FIG. 2 during traveling, the step 6a can be crossed.

Even when the step 6a reaches the position of the dotted line 6b, it is possible to get over the vehicle by moving the wheel 7b up and down in the direction of the arrow c. As will be understood from the above description, the objects of the present invention can be achieved. FIG. 4 is a block circuit diagram for explaining the above-described operation. In FIG. 4, the output of the battery 16 controls energization of the electric motor 12 by opening and closing the manual electric switch 15. Since the driving force of the electric motor 12 drives the apparatus as described with reference to FIG.

1 Chassis 2a, 2b, 2c, 2d Wheels 3a, 3b, 3c, 3d Enclosures 4a, 4b, 4c, 4d including motors and their reduction gears Support shafts 7a, 7b Wheels 8a, 8b, 8c, 8d moving up and down 8e, 8f Lever 9a, 10a Support shaft 6 provided on carriage 1 Traveling road surface 6a, 6b Step 10 Electric motor and speed reducer 11a, 11b, 11c, 11d, 12a, 12b, 12c, 12d Dotted line 12 indicating the traveling direction of the wheel 12 Electric motor 13 Speed reducer 14 Wheel drive unit including electric motor 15 Manual electric switch 16 Battery

Claims (1)

  Four sets of traveling wheels with a small diameter mounted on a second support shaft that is rotatably mounted around a first support shaft that protrudes vertically on the lower surface of the chassis, and at least two of the wheels A plurality of first DC motors that are mounted and drive the wheels via reduction gears, and the second support shaft are driven to indicate the traveling directions of the wheels by the symbols 2a, 2b, 2c, and 2d in FIG. The second driven through the first manual electric switch so as to be localized and held in the arrow direction and the arrow direction indicated by symbols 12a, 12b, 12c and 12d and the arrow direction indicated by symbols 11a, 11b, 11c and 11d A DC motor, an in-vehicle storage battery that supplies power to the first and second DC motors, and a second manual so that the four traveling wheels float above the road surface and then fall so as to get over the step on the road surface. A device that controls driving through an electrical switch; Electric vehicle, characterized in that it is more configurations.

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