JPH08126126A - Drive operation unit for motor vehicle - Google Patents

Abstract

PURPOSE: To simplify the forward/reverse operation of a motor vehicle while eliminating erroneous operation by providing a highest speed setting switch independently from an acceleration lever and integrally providing a highest speed setting switch with a forward/reverse operating function. CONSTITUTION: A highest speed set switch 10 is provided in a switch box 2 independently from an acceleration lever 1 of a motor vehicle and the highest speed set switch 10 is provided with a forward/reverse operating function integrally. The highest speed set switch 10 is variable continuously and provided with an arcuate resistor 14 extending around the rotary shaft of an oscillating brush 12. The brush 12 is brought into contact with the resistor 14 by means of a variable resistor 16. In this regard, a control program is configured such that the lowest resistance area of the variable resistor 16 is assigned to reverse operation. This structure simplifies the forward/reverse operation of a motor vehicle and eliminates erroneous operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling operating device for an electric vehicle, and more particularly, for a traveling operating device for an electric three-wheeled vehicle, which is a type of electric wheelchair, for setting a maximum speed and switching between forward and backward movements.

[0002]

2. Description of the Related Art Electric vehicles such as electric tricycles, which are a type of electric wheelchairs, are designed to allow persons with disabilities and the elderly to move easily. A traveling control system for controlling a motor for traveling driving in the electric three-wheeled vehicle is as schematically shown in FIG. In the control system of FIG. 13, the traveling control unit f including a microcomputer outputs a traveling command based on signals from the maximum speed changeover switch a, the forward / reverse changeover switch b, and the accelerator lever e.
A drive control unit g including a semiconductor thyristor controls the electric power supplied to the motor h based on the travel command to control the travel of the vehicle.

The traveling operation device in the electric tricycle is
Conventionally, for example, as shown in FIG. 14, a maximum speed changeover switch a1 and a forward / reverse changeover switch b1 are separately provided in a switch box d in a central portion of a handle c.
It is provided in. The maximum speed changeover switch a1
Both the forward and reverse switches b1 are toggle switches, and the maximum speed changeover switch a
The setting of the maximum speed by 1 is usually three steps of H / M / L (high speed / medium speed / low speed). An accelerator lever e is provided in the switch box d so that an occupant can control the vehicle speed from the start of the vehicle to a set maximum speed by operating the accelerator lever e. Japanese Patent Application Laid-Open No. 3-135306 has been proposed for an accelerator lever of an electric vehicle.

Further, in the traveling operating device, as shown in FIG. 15, for example, the maximum speed changeover switch a2 and the forward / reverse changeover switch b2 are both constituted by rotary knobs, and the maximum speed is shown in FIG. 2-6 km /
It is continuously variable in h. In addition, with this kind of device
In some cases, only the reverse switch b may be a toggle type.

[0005]

However, as shown in FIG.
Further, in the traveling operation device shown in FIG. 15, both the maximum speed changeover switch a1 or a2 and the forward / reverse changeover switch b1 or b2 are separated, and the operation is required for a disabled person or an elderly person to drive. It is easy to be troublesome. It is considered that it is not uncommon to wonder for a moment which switch to operate, for example, when trying to move backward, especially when a quick operation is required.

The present invention has been made to solve the above-mentioned conventional problems, and provides a traveling operation device for an electric vehicle which simplifies forward and backward operations of the electric vehicle and eliminates erroneous operations. This is an issue.

[0007]

According to a first aspect of the present invention, in order to solve the above-mentioned problems, in a device for operating forward / backward traveling of an electric vehicle, a maximum speed is provided separately from an accelerator lever of the electric vehicle. A configuration of a traveling operation device for an electric vehicle is provided, in which a setting switch is provided, and a forward / reverse operation function is integrally added to the maximum speed setting switch.

[0008]

According to the invention of claim 1, the maximum speed setting switch is provided separately from the accelerator lever of the electric vehicle, and the maximum speed setting switch is integrally provided with the forward / reverse operation function. It is possible to perform forward / backward operation without operating the switch at another location while operating the setting switch.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view illustrating the appearance of an electric tricycle equipped with a travel operation device according to an embodiment of the present invention, and FIG.
FIG. 3 is an explanatory view of a control system of a drive motor of the traveling operation device of the embodiment, FIG. 3 is a partial external view of the traveling operation device of the first embodiment, and FIG. 4 is an explanatory view of the variable resistor 16 of the maximum speed setting switch. , (A) is a plan view, (b) is a partial side view, and FIG.
6 is an explanatory diagram showing the relationship between the output voltage V ₀ of the variable resistor 16 and the maximum speed v ₀ , FIG. 6 is an explanatory diagram of the connection on the circuit diagram of the variable resistor 16, and FIG. 7 is a maximum speed setting switch. 10
It is explanatory drawing which provided the lock button 11 which prevents it from turning to a reverse side from a stop area | region.

FIG. 8 is an explanatory view of a first modification of the second embodiment,
FIG. 9 is an explanatory diagram of a second modification of the second embodiment, and FIG.
FIG. 11 is an explanatory view of a third modified example of the embodiment, FIG. 11 is an explanatory view of a vehicle speed of the second embodiment, and FIG. 12 is an explanatory view of a circuit input to the microcomputer 18 of the second embodiment.

As shown in FIG. 1, in the traveling operation device, a maximum speed setting switch (10, 20) is provided in a switch box 2 separately from the accelerator lever 1 of the electric vehicle, and the maximum speed setting switch is provided. The forward and reverse operation functions are added to (10, 20). Reference numeral 3 is a handle. In addition, the control system (travel control system) of the drive motor 6 by the traveling operation device is, as shown in FIG. 2, a maximum speed setting switch (10, 2).
0), a forward / reverse switching function, an accelerator lever 1, a travel control unit 4, a drive control unit 5, a motor 6 and the like, and those shown in FIG. 13 and the maximum speed setting switch (10, 2).
Items with similar names except 0) have similar functions,
The explanation is omitted.

First, FIG. 3 shows the traveling operation device of the first embodiment. The traveling operation device according to the first embodiment is basically the same as that shown in FIG. 15 except that the forward / backward changeover switch b2 is deleted. The external appearance of the maximum speed setting switch 10 is the maximum speed changeover switch shown in FIG. It is the same as a2.

As shown in FIG. 3, in the traveling operation device, the maximum speed setting switch 10 is of a dial type which rotates on the outer surface of the switch box 2, and a function of switching between forward and reverse depending on a rotation angle is added. It was done. The maximum speed setting switch 10 is a continuously variable type, and as shown in FIG.
And an arc-shaped resistor 14 along the circumference of the rotation axis of the brush.
Is used and the brush 12 is in contact with the resistor 14 using a variable resistor 16. In this case, the region with the lowest resistance of the variable resistor 16 moves backward (Reverse:
R), a control program (for example, the program when the traveling control unit 4 of FIG. 2 is configured by a microcomputer) is configured.

FIG. 5 shows the output voltage V _{0 of the} variable resistor 16.
And the maximum speed v ₀ . In FIG. 3, the portion marked with a hatched ellipse corresponds to the stop area in FIG. Also, the reverse speed is a single speed. The wiring of the variable resistor 16 on the circuit diagram is as shown in FIG. As shown in FIG. 6, the maximum speed switching signal and the forward / reverse switching signal are input from the variable resistor 16 to AD0 of the A / D input of the microcomputer 18 (which the traveling control unit 4 has). The A / D converter input AD1 of the microcomputer 18 receives an accelerator signal from the accelerator circuit of the accelerator lever 1 (which is composed of a variable resistor whose resistance value changes according to the accelerator rotation angle).

In the first embodiment, as shown in FIG. 5, the maximum speed on the reverse side is set to be equal to the minimum speed within the maximum speed on the forward side.

Further, in the first embodiment, when the maximum speed setting switch 10 is rotated right facing the FIG. 3, the maximum speed can be set on the high speed side (2 → 4 → 6), and when it is rotated counterclockwise, The setting can be changed from the low speed side to the stop area and further to the reverse side. In this case, if only the variable resistor 16 is used, the vehicle moves from the lowest speed on the forward side to the reverse side without any resistance. Therefore, in order to have moderation at the point of switching from forward to reverse when performing the operation of switching from the minimum speed on the forward side to the reverse side, or changing the operation feeling,
You can set conditions for the operation.

For example, as shown in FIG. 4B, the variable resistor 16 is slidably brought into contact with the opposite end 12a of the resistor 14 of the brush 12 so as to generate a resistance to the operation feeling. An uneven portion 12b1 is formed so as to slide on the plate member 12b, and the sliding contact plate member intentionally deteriorates the sliding state when the brush 12 moves to the retracted side.
This is good. On the reverse side, a feeling of being caught in the operation of the maximum speed setting switch 10 or a heavy feeling occurs, and the occupant can know from the operation feeling that the vehicle will switch to the reverse side. Further, preferably, as shown in FIG. 7, the maximum speed setting switch 10 is provided with a lock button 11 which prevents the maximum speed setting switch 10 from rotating backward from the stop region.
However, if the lock button 11 is not pressed, it will not turn to the reverse side.

8 to 10 show a second embodiment (first embodiment) of the present invention.
There are modified examples to third modified examples). The same parts as those in the first embodiment shown in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted. In the second embodiment, the maximum speed setting switch 20
It is equipped with a switch for switching between forward and reverse. In a first modified example shown in FIG. 8, the maximum speed setting switch 20 has a dial shape similar to that of the first embodiment, and when the changeover switch 21 formed of a push button protruding in the center of the dial is pressed, Switch to the reverse side. Further, in the second modified example shown in FIG. 9, when the maximum speed setting switch 20 pushes the changeover switch 22 formed of a push button on the dial side, the reverse mode is similarly set. Furthermore, in the third modified example shown in FIG. 10, when the maximum speed setting switch 20 presses the dial itself, the vehicle moves backward (for example, a short stroke switch).
To configure.

The second embodiment (variations 1 to 3)
Then, as shown in FIG. 11, the maximum speed setting switch 20
The vehicle speed on the reverse side is set to be lower than the vehicle speed on the forward side when the turning angle θ of the vehicle is at the same position (at the same dial position). FIG. 12 shows a circuit input to the microcomputer of the second embodiment. 12, S1 is the push-button changeover switches 21 and 22 in FIGS. 8 and 9, and the maximum speed setting switch 2 for the short stroke (example) in FIG.
0. The reverse signal becomes "L (Low: low speed)" and is input to the port P11. In the second embodiment, the reverse vehicle speed is set to 70% of the forward vehicle speed by inputting the signal "L".

According to this embodiment, the maximum speed can be set and the forward / reverse can be switched with only one dial of the maximum speed setting switches 10 and 20, and the operability is excellent. Also, the maximum speed can be set continuously. In particular, when a person with a disability takes a walk with a healthy person, any speed can be fixed. (Generally, it is difficult to operate the accelerator at the intermediate position.) Furthermore, the maximum reverse speed can be set at a fixed first speed, saving labor. In the first embodiment, in the case of FIG. 4, erroneous operation can be prevented by providing moderation at the forward / reverse switching point. Further, in the first embodiment, the two functions of maximum speed setting and forward / backward switching are transmitted by one signal line, so that one wire harness for passing signals can be reduced. Further, in the case of FIG. 7, since the lock button operation is required at the switching point between the forward movement and the reverse movement, it is possible to prevent an erroneous operation. In the case of the second embodiment, as shown in FIG. 8 to FIG. 10, it is possible to switch to reverse by one touch and easily obtain the required maximum reverse speed.

[0021]

As described above, according to the present invention, the forward / backward operation of the electric vehicle can be simplified and erroneous operation can be eliminated.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an external appearance of an electric tricycle equipped with a travel operation device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a control system of a drive motor of the traveling operation device according to the embodiment.

FIG. 3 is a partial external view of the travel operation device of the first embodiment.

4A and 4B are explanatory views of a variable resistor of the maximum speed setting switch, FIG. 4A is a plan view, and FIG. 4B is a partially enlarged side view of FIG.

5 is an output voltage V ₀ and a maximum speed v ₀ of the variable resistor of FIG.
It is explanatory drawing which shows the relationship with.

FIG. 6 is an explanatory diagram of connections on the circuit diagram of the variable resistor of FIG. 4.

FIG. 7 is an explanatory diagram in which a lock button for preventing rotation from a stop region to a reverse side is provided in the maximum speed setting switch.

FIG. 8 is an explanatory diagram of a first modification of the second embodiment.

FIG. 9 is an explanatory diagram of a second modification of the second embodiment.

FIG. 10 is an explanatory diagram of a third modification of the second embodiment.

FIG. 11 is a vehicle speed explanatory diagram for the second embodiment.

FIG. 12 is an explanatory diagram of a circuit input to the microcomputer of the second embodiment.

FIG. 13 is an explanatory diagram of a drive motor control system by a general traveling operation device.

FIG. 14 is an explanatory diagram of a conventional traveling operation device.

FIG. 15 is an explanatory diagram of another conventional travel operation device.

[Explanation of symbols]

 1 Accelerator Lever 10, 20 Maximum Speed Setting Switch 11 Lock Button 12 Brush 12a Opposite Side End 12b Sliding Contact Plate Material 16 Variable Resistor 18 Microcomputer 21, 22 Changeover Switch

Claims (1)

[Claims] 1. A device for operating forward / backward traveling of an electric vehicle, wherein a maximum speed setting switch is provided separately from the accelerator lever of the electric vehicle, and the forward / backward operation is performed integrally with the maximum speed setting switch. A traveling operation device for an electric vehicle, which is characterized by adding a function.