JP2740379B2 - Electric car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vehicle on which a user rides and travels using a battery as a drive source.

[0002]

2. Description of the Related Art Conventionally, in an electric vehicle of this type, forward and backward movements are performed by rotating a motor driven by a battery forward and backward, and a user switches forward and backward by switching a switching lever. switching,
The running speed was determined by the operation amount of the accelerator. A switch is provided in front of the electric vehicle main body, and the switch is turned on when it comes into contact with an obstacle in front.
However, a safety mechanism was provided to stop the electric vehicle by applying the electromagnetic brake. When the vehicle restarts, the switching lever is switched in a direction to escape from the obstacle, and the vehicle is driven again by operating the accelerator.

However, with the above-described configuration, when the switch comes on, the main body stops when it comes into contact with an obstacle, and it is necessary to switch the switching lever when restarting the next time. It was very troublesome. Further, the switching lever must be provided separately from the accelerator, which is disadvantageous in terms of cost.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an inexpensive electric vehicle which can be easily escaped when the electric vehicle hits an obstacle by an easy operation.

[0005]

According to the present invention, there is provided a main body having driving wheels driven by a motor, an accelerator for selecting forward, reverse, and stop, and energizing the motor by detecting an obstacle of the main body. And a switch for performing a stop control for operating the electromagnetic brake, wherein the stop control is released when the accelerator selects stop.

[0006] Further, the accelerator is characterized in that a stop is arranged between forward movement and reverse movement.

[0007]

When the electric vehicle runs and the electric vehicle hits an obstacle, the switch detects this and turns off the power to the motor to apply the electromagnetic brake and stop. That is, stop control is performed. When the vehicle escapes from the obstacle, the electromagnetic brake can be released by temporarily setting the accelerator to a stop mode, that is, the stop control can be released, and the vehicle can start again.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
This will be described in detail with reference to FIG.

Reference numeral 1 denotes an electric tricycle main body, reference numeral 2 denotes a front wheel which moves left and right by a steering wheel 3, and a front wheel which determines the traveling direction. Reference numeral 5 denotes a seat on which a driver can sit. Usually, the driver sits on the seat 5, and holds the handle 3 to depress the accelerator 6 inside the handle 3 from above to enter a forward mode. The main body 1 moves forward. By pushing up the accelerator 6 from below, the vehicle enters the reverse mode, and the main body 1 moves backward. When the accelerator 6 is not operated, the accelerator 6 is urged by springs from both sides so as to stop at the neutral position, and enters a stop mode. The running speed can also be varied by the operation amount of the accelerator 6.

Next, the structure of the bumper is shown in FIGS.

Reference numeral 7 denotes an arc-shaped bumper frame in which an iron pipe is covered with an elastic material such as urethane. As shown in FIG. A sliding member 15 is provided and fitted so that one end of the bumper frame 7 can be moved in the horizontal direction in this U-shape. The other end of the bumper frame 7 is, as shown in FIGS.
It is fitted in a U-shaped holding bracket 9 and is rotatable in a horizontal direction about a first rotating shaft 10 provided on the holding bracket 9. The holding bracket 9 has a second rotating shaft substantially at the center thereof.
The second rotating shaft 11 is rotatable in the horizontal direction with respect to the main body 1. Further, a magnet 12 is provided at the other end of the bumper frame 7, and a switch, that is, a reed switch 13 is provided at a portion of the holding fixture 9 where the magnet 12 is close to the first rotating shaft 10. When the bumper frame 7 is moved by the second rotating shaft 11 and the magnet 12 and the reed switch 13 are separated from each other, this is detected and the power supply to the motor is cut off to apply an electromagnetic brake. Has become. Here, the reed switch 13 is used as the switch, but a micro switch or the like may be used. The above configuration is collectively called bumper 14.

Next, the operation of the electric tricycle will be described with reference to FIGS.

The used vehicle gets on the seat 5, and the accelerator 6 is pressed down from above to rotate the motor to drive the drive wheels 4 to move the main body 1 forward.

When the vehicle is to be moved backward, the accelerator 6 is pushed upward from the bottom to rotate the motor in the reverse direction to move backward. At this time, the steering wheel 3
Is rotated left and right to move the front wheel 2 left and right.

If the electric tricycle main body 1 hits an obstacle while moving forward, for example, from the front, the bumper frame 7 moves straight relative to the main body 1 as shown by the arrow in FIG. At this time, the first rotating shaft 10 and the second rotating shaft 11
The bumper frame 7 is moved by the rotation of the motor, and the magnet 12 and the reed switch 13 are separated at that time, so that the current flowing to the motor is cut off and the electromagnetic brake is applied. However, the drive of the main body 1 stops there, but the momentum running up to that time remains in the main body 1, and the bumper frame 7 moves to the main body 1 side to absorb the momentum.

Next, as shown by an arrow in FIG. 7, when the main body 1 hits an obstacle from an oblique direction, the rotation of the first rotation shaft 10 and the second rotation shaft 11 causes the bumper as shown in the figure. When the frame 7 moves and the magnet 12 and the reed switch 13 are separated, the rotation of the motor is stopped and the electromagnetic brake is applied as in the case where the frame 7 is hit from the front.

Further, when the main body 1 hits an obstacle and moves away from the obstacle, it must be backed up. The relationship between the control of the bumper 14 and the accelerator 6 at this time will be described with reference to FIG.

When the main body 1 hits an obstacle, it is first determined whether or not the reed switch 13 is detecting. If hit, the reed switch 13 will maintain the detected state,
Next, the position of the accelerator 6 is determined. If an obstacle is hit, then the accelerator 6 is in forward mode. Therefore, in determining whether or not the accelerator 6 is in the forward mode, it is determined that the accelerator 6 is in the forward mode, and the stop control, that is, the power supply to the motor is turned off and the electromagnetic brake is applied. Subsequently, the user avoids obstacles,
The position of the accelerator 6 is switched from the forward position to the neutral position and then to the reverse position. When the accelerator 6 is set to the neutral position, it is determined that the accelerator 6 is not moving backward, so that it is determined that the vehicle is not moving backward, so that the stop control, that is, the electromagnetic brake is released. When the user switches to the reverse mode of the accelerator 6, the vehicle moves backward.

Next, when the main body 1 hits an obstacle for a moment and thereafter the obstacle disappears, for example, when it hits a person, it is first determined whether or not the reed switch 13 is turned on when hitting. Then, stop control is applied in the same manner as described above. Subsequently, even if the obstacle is removed and the reed switch 13 detects that there is no obstacle, it is determined whether or not the accelerator 6 is in the neutral state. It has become.

With the above configuration, when the electric tricycle comes into contact with an obstacle, it is not necessary to switch the traveling direction when restarting, and furthermore, the switching of the traveling direction and the accelerator are performed by the same operating body. Because it can be done, there is no cost.

[0021]

According to the present invention, there is provided a switch for performing a stop control for detecting an obstacle in the main body, stopping power supply to the motor and operating the electromagnetic brake, and releasing the stop control when the accelerator is selected to stop. Therefore, the vehicle is not restarted unless the running operation is stopped once, which is very safe. In addition, since the accelerator is provided with a stop between the forward movement and the reverse movement, the traveling operation and the release of the stop control can be performed with a single operating body, which is very simple and low cost.

[Brief description of the drawings]

FIG. 1 is a flowchart of control in a main part showing one embodiment of the present invention.

FIG. 2 is a bottom view of the main part.

FIG. 3 is a sectional view taken along a line 2-2 in FIG.

FIG. 4 is a sectional view taken along line 3-3 in FIG.

FIG. 5 is an enlarged view of a main part in FIG. 1;

FIG. 6 is a diagram illustrating the same operation.

FIG. 7 is a diagram illustrating the same operation.

FIG. 8 is a side view of the main body.

[Explanation of symbols]

 4 Drive wheel 1 Body 6 Accelerator 13 Switch

Claims (2)

(57) [Claims] 1. A main body having driving wheels driven by a motor, an accelerator for selecting forward, reverse, or stop, and detecting an obstacle of the main body to stop energizing the motor to operate an electromagnetic brake. An electric vehicle, comprising: a switch for performing stop control, wherein the stop control is released when the accelerator selects stop. 2. The electric vehicle according to claim 1, wherein the accelerator has a stop arranged between a forward movement and a reverse movement.