JPH0556515A - Electric vehicle - Google Patents

Abstract

PURPOSE:To get away from an obstacle through simple operation by providing a switch for detecting an obstacle in the advancing direction to perform stop control and releasing the stop control under stop mode of accelerator. CONSTITUTION:Upon collision of a motor tricycle 1 against an obstacle, a bumper frame 7 moves straight with respect to a body 1. At that time, the bumper frame 7 moves through rotation of first and second rotary shafts 10, 11 to separate a magnet 12 from a lead switch 13 thus interrupting current supply to a motor and applying electromagnetic brake thereon. A user then shifts an accelerator 6 from drive or rear position to a stop mode or neutral position. At that time, stop control, i.e., electromagnetic brake, is released. The user then switches the accelerator 6 to rear or drive mode thus moving the vehicle again. According to the invention, the user can get away from an object through simple operation and cost reduction is also realized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vehicle that is driven by a user with a battery as a driving source.

[0002]

2. Description of the Related Art Conventionally, in this type of electric vehicle, forward and reverse movements are performed by rotating the battery-driven motor in the forward and reverse directions, and the user switches forward and backward by switching the switching lever. switching,
The running speed was determined by the operation amount of the accelerator. A switch is provided in front of the electric car body, and the switch is turned on when an obstacle in front is contacted.
However, there was a safety mechanism in place to stop the electric car by applying an electromagnetic brake. Then, when the vehicle restarts, the switching lever is switched in a direction to escape from the obstacle, and the accelerator is operated to travel again.

However, with the above-mentioned structure, when the obstacle is touched, the switch is turned on to stop the main body, and the switching lever needs to be switched when the vehicle restarts next time. It was very troublesome. Further, the switching lever must be provided separately from the accelerator, which is inconvenient in terms of cost.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric vehicle which can be evacuated by a simple operation when the electric vehicle hits an obstacle and which does not cost much.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a main body having drive wheels driven by a motor, and modes for advancing, reversing and stopping are provided to change the speed of the main body in accordance with an operation amount thereof. It is provided with an accelerator that can be operated and a switch that detects an obstacle in the traveling direction of the main body to perform stop control, and the accelerator stop mode releases the stop control.

Further, the accelerator has a stop mode provided between a forward drive mode and a reverse drive mode.

[0007]

When the electric vehicle runs, and the electric vehicle hits an obstacle, the switch detects this and turns off the electric power to the motor to apply an electromagnetic brake to stop the electric vehicle. That is, stop control is performed. Then, when escaping from the obstacle, the electromagnetic brake can be released by putting the accelerator into the stop mode, that is, the stop control can be released and the vehicle can be started again.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIG.
It will be described in detail with reference to FIG.

Reference numeral 1 is a main body of an electric tricycle, 2 is a left and right wheel which is moved left and right by a handle 3, and a front wheel 4 which determines a traveling direction is a rear wheel which is a driving wheel, and is rotationally driven by a motor which uses a battery as a power source. Further, 5 is a seat seat on which the driver can sit. Normally, the driver sits on the seat 5 and enters the forward mode by holding the steering wheel 3 and pushing down the accelerator 6 inside the steering wheel 3 from above. The main body 1 moves forward. In addition, by pushing up the accelerator 6 from below, the vehicle enters the reverse mode and the main body 1 moves backward. Further, when the accelerator 6 is not operated, the accelerator 6 is urged by springs from both sides so as to stop at its neutral position and enters a stop mode. The traveling speed can also be changed according to 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 body such as urethane. One end of the bumper frame 7 is a U-shaped guide plate fixed to the main body of the electric tricycle as shown in FIG. 8 is provided, and a sliding member 15 is provided and fitted so that one end of the bumper frame 7 is horizontally movable in the U-shape. Further, as shown in FIGS. 4 and 5, the other end of the bumper frame 7 is
It is fitted in a U-shaped holding metal fitting 9 and is rotatable in the horizontal direction around a first rotating shaft 10 provided in the holding metal fitting 9. Then, the holding metal fitting 9 is provided with a second rotary shaft at the substantially central portion.
11 is provided, and 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 tip on the other end side of the bumper frame 7, and a switch, that is, a reed switch 13 is provided at a portion of the holding metal fitting 9 in the vicinity of the magnet 12, and the first rotating shaft 10 is provided. Also, 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 motor is de-energized to apply the electromagnetic brake. Is becoming 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 referred to as bumper 14.

Next, the operation of this electric tricycle will be described with reference to FIGS. 6 and 7.

The vehicle to be used rides on the seat 5 and pushes down the accelerator 6 from above to rotate the motor and 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 lower side so that the motor is reversely rotated to move backward. At this time, in order to change the direction, handle 3
The front wheel 2 is moved left and right by rotating the right and left.

When the electric tricycle body 1 hits an obstacle while moving forward, for example, when hitting from the front, the bumper frame 7 moves straight with respect to the body 1 as shown by the arrow in FIG. At this time, the first rotating shaft 10 and the second rotating shaft 11
Rotation causes the bumper frame 7 to move, and at that time the magnet 12 and the reed switch 13 are separated from each other, 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 is stopped there, but the momentum running until then remains in the main body 1, so that the bumper frame 7 moves to the main body 1 side to absorb the momentum.

Next, as shown by the arrow in FIG. 7, when the main body 1 hits an obstacle from an oblique direction, the first rotary shaft 10 and the second rotary shaft 11 rotate to cause a bumper as shown in the figure. By moving the frame 7 and separating the magnet 12 and the reed switch 13, the rotation of the motor is stopped and the electromagnetic brake is applied, as in the case of hitting from the front.

Further, when the main body 1 hits an obstacle and separates 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 judged whether or not the reed switch 13 is detecting. If it hits, the reed switch 13 maintains the detected state,
Next, the position of the accelerator 6 is determined. If it hits an obstacle, then the accelerator 6 is in forward mode. Therefore, when it is determined whether the accelerator 6 is in the forward mode, it is determined that the accelerator is in the forward mode, and stop control is performed, that is, the motor is deenergized 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 whether the accelerator 6 is in the reverse drive or not, so that the stop control, that is, the electromagnetic brake is released. Then, 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 then the obstacle disappears, for example, when hit by a person, it is first judged whether or not the reed switch 13 is turned on. Then, the stop control is applied in the same manner as described above. Next, even if the reed switch 13 detects that there is no obstacle and the reed switch 13 detects that there is no obstacle, it will not restart unless the accelerator 6 is judged to be in the neutral state and the neutral state is once set and the stop control is released. It has become.

With the above-described structure, when the electric tricycle comes into contact with an obstacle, it is not necessary to switch the traveling direction when the vehicle restarts. Further, 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]

[Effects of the Invention] The present invention has an effect that when an electric vehicle hits an injured object, it can be escaped by a simple operation, and further it does not cost much.

[Brief description of drawings]

FIG. 1 is a flowchart of control in a main part according to an embodiment of the present invention.

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

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

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

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

FIG. 6 is a diagram showing the same operation.

FIG. 7 is a diagram showing the same operation.

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

[Explanation of symbols]

 4 Drive wheel 1 Main body 6 Accelerator 13 Switch

Claims (2)

[Claims] 1. A main body provided with drive wheels driven by a motor, an accelerator capable of changing a speed of the main body according to an operation amount by providing forward, reverse and stop modes, and a movement of the main body. An electric vehicle comprising a switch for detecting an obstacle in a direction and performing stop control, and releasing the stop control in a mode of stopping the accelerator. 2. The electric vehicle according to claim 1, wherein the accelerator has a stop mode between a forward drive mode and a reverse drive mode.