JPS59149843A - Autowiper for car - Google Patents

Abstract

PURPOSE:To certainly wipe the raindrop whose quantity changes according to the speed by automatically determining a wiper mode on the basis of a signal of the car speed transmitted from means of car speed measurement and controlling driving of a wiper motor correspondingly to the determined wiper mode. CONSTITUTION:Initial setting of a wiper mode is made by a means 20 for initial setting of wiper mode. Further, a means 30 of autocontrol setting is automatically operated by a signal of car speed transmitted from a means 40 of car speed measurement, and a wiper mode at that time is determined by a means 50 of wiper mode determination according to the initially determined wiper mode and the car speed. The wiper mode thus determined is extracted from a means 10 of wiper mode memory, and driving of a wiper motor 70 is controlled by a means 60 of motor driving control according to this wiper mode.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for automatically controlling the operation of wipers for automobiles.

In conventional automobile wipers, a plurality of wiper modes are preset, one of which is selected, and the wiper is thereafter controlled according to the selected mode. For example, assume that the wiper modes are set in advance as an intermittent mode in which the wiper moves intermittently, a medium-speed mode in which it moves continuously at a medium speed, and a high-speed mode in which it moves continuously at a high speed. Therefore, suppose that one of the modes is the medium speed mode. As a result, no matter how the vehicle speed changes,
The wiper mode remains constant and does not change, and the wiper always operates continuously at a medium speed.

However, in the conventional example described above, there are cases where the wiper mode must be changed frequently while the vehicle is running, and in such a case, there is a problem that the operation is complicated. In other words, even if you are driving in an area with a constant amount of rainfall, the faster the vehicle speed, the more rain will hit the windshield, etc.
If it becomes necessary to wipe the glass quickly, and the vehicle speed decreases, it may be possible to wipe the glass slowly, which will make driving easier and less likely to cause noise or vibrations. However, as mentioned above, when driving at high speed when medium speed mode is selected, the wiper drive speed also needs to be increased, which requires resetting the wiper mode to high speed mode, and vice versa. Then, it becomes necessary to drive the wiper intermittently, and therefore it becomes necessary to reset the wiper mode to intermittent mode.

In this way, once the wiper mode is set, if the traveling speed changes, the wiper mode must be manually set again each time, which is cumbersome.

The present invention has been made by focusing on the above-mentioned problems of the conventional method, and normally the wiper is driven according to a manually set wiper mode, and the wiper is properly wiped away according to the amount of raindrops that changes according to the driving speed of the car. The purpose of this invention is to provide an automatic wiper that can perform the following functions.

To achieve this object, the present invention provides wiper mode storage means for storing the contents of a plurality of wiper modes, wiper mode initialization means for initializing one of the wiper modes, and a vehicle speed measuring means for measuring vehicle speed. a measuring means, an auto-control full setting means for making settings to automatically change the wiper mode according to the current vehicle speed, and a wiper mode for determining the wiper mode according to the initially set wiper mode and the vehicle speed at that time. It has a determining means, and a motor drive control means for controlling the drive of the wiper motor according to the wiper mode determined by the wiper mode determining means.

The present invention will be described in detail below based on embodiments shown in the accompanying drawings. FIG. 1 is a diagram clearly showing the configuration of the present invention.

First, wiper mode storage means 10 is provided for storing the contents of a plurality of wiper modes. These wiper modes include an intermittent mode in which the wiper is driven intermittently at a relatively low speed, a medium-speed mode in which the wiper is driven continuously at a medium speed, and a high-speed mode in which the wiper is driven continuously at a high speed. A wiper mode initial setting means 20 is provided for initializing one of these wiper modes, and a vehicle speed measuring means 40 is provided for measuring the vehicle speed at any given time. Furthermore, automatic control m setting means 30 performs settings for automatically changing the wiper mode according to the vehicle speed at that time;
wiper mode determining means 50 that determines the wiper mode according to the initially set wiper mode and the vehicle speed at that time;
A motor drive control means 60 is provided for controlling the drive of the wiper motor 70 in accordance with the wiper mode determined by the wiper mode determination means 50. This motor 70 reciprocates a rack 71 in the left-right direction via a link, and a binion 72.73 is meshed with this rack 71, and the blade rubber is interlocked with the binion 72.73. The fan-shaped area in FIG. 1 is the area wiped by the wiper. The wiping pattern in this figure is a tandem type, but
Opposite type may also be used.

FIG. 2 is a diagram schematically showing the operation of the above embodiment. In this figure, the initially set (manually set) wiper mode is depicted in the vertical direction, and the vehicle speed is depicted in the horizontal direction. The wiper mode in that case is displayed at the position where the horizontal line of the initially set wiper mode intersects with the vertical line of the vehicle speed at that time. For example, assume that you first set the medium speed mode to 4-manual. In this case, if the vehicle is traveling at a low speed (including stopping), the wiper mode is the intermittent mode, if the vehicle is traveling at a medium speed, the wiper mode is the medium speed mode, and if the vehicle is traveling at a high speed, the wiper mode is the high speed mode. Of course, even if the vehicle speed is the same, if the initially set wiper mode is different, the wiper mode at that vehicle speed will be different. Here, low-speed driving is 20km/h or less, and medium-speed driving is 20 to 60km/h.
/H1 high speed running is defined as 60km/)-(or more).

The contents of this speed setting and wiper mode may be changed as necessary.

FIG. 3 is a circuit diagram showing the embodiment of FIG. 1 in more detail. First, there is a memory 11 as the wiper mode storage means 10 in FIG. 1, and the memory 11 stores the above-mentioned intermittent mode and medium speed mode.

Each content of the high speed mode is stored. A rotary switch 21 is provided as the wiper mode initial setting means 20, and an encoder 22 is connected to each terminal of the rotary switch 21. According to the selection of the terminal corresponding to the initial setting, the encoder 2
A signal is input from 2 to the input port of the micro combi coater 51.

A switch 31 is provided as the auto setting means 30,
This switch 31 is connected to an input port of the microcomputer 51. When the switch 31 is turned on, settings are made to automatically change the wiper mode according to the vehicle speed. The vehicle speed measuring means 4o is composed of a reed switch 41, a resistor 42, a differentiating circuit 43 that differentiates the output signal of the reed switch 41, and a counter 44 that counts the differentiated pulses. A permanent magnet is provided on the axle or the like, and a reed switch 41 is provided at a position facing the permanent magnet. The counter 44 outputs a signal corresponding to the vehicle speed, and the output terminal of the counter 44 is connected to the input port of the microcomputer 51.

The microcomputer 51 has a wiper mode determining means 5
0, and the wiper mode is determined according to the initially set wiper mode and the vehicle speed at that time.
A signal for controlling the transistor 61 is output from the output port.

This transistor 61 is one of the motor drive control means 60. Note that MS is a main switch.

Next, the operation of the above embodiment will be explained. This 01 work is shown in a flowchart in FIG. First, the main switch MS is turned on (step 100). Next, the wiper mode is selected as an initial setting using the rotary switch 21), and if automatic control is to be performed, the switch 31 is turned on. If the switch MS is kept on, the process proceeds to step 200, where it is determined whether the setting made by the rotary switch 21 is the intermittent mode, and if it is the intermittent mode, it is determined whether or not automatic control is to be performed. If it is determined (step 210) and automatic control is not performed (
That is, if the switch 31 is off), the intermittent mode is executed as initially set (step 500). In step 210, if it is determined that the automatic setting is selected, vehicle speed data is input from the vehicle speed measuring means/IQ (step 220), and it is determined whether the vehicle speed is low (step 230). ). As a result, if the vehicle is traveling at a low speed, the intermittent mode is executed, and if the vehicle is traveling at a speed higher than the low speed, the wiper is driven in the medium speed mode (step 6).
00).

On the other hand, if the intermittent mode is not selected in step 200, then it is determined whether the mode is the medium speed mode (step 300), and if it is the medium speed mode, whether automatic control is necessary. It is determined whether or not (step 31
0). If automatic control is not required, the wiper is driven in the medium speed mode according to the initial Iff setting (step 600).

If it is determined that automatic control is necessary, the vehicle speed data at that time is input (step 320), it is determined whether or not the vehicle is traveling at low speed (step 330), and if the vehicle is traveling at low speed, intermittent mode is executed; If the vehicle is not running at low speed, then it is determined whether or not the vehicle is traveling at medium speed (step 340). If the vehicle is traveling at medium speed, the medium speed mode is executed, and if the vehicle is not traveling at medium speed, the high speed mode is executed (step 700).

In this manner, when the high speed mode is executed, it is desirable to provide a display means that indicates that the wiper will be driven at high speed. By doing this, the driver will not be surprised even if the wiper suddenly starts operating at high speed.

If it is determined in step 300 that the mode is not medium speed mode, it is determined whether automatic control is necessary (step 400), and if automatic control is not required, high speed mode is executed as initially set. be done. If automatic control is required, vehicle speed data is input (step 410).
, it is determined in step 420 whether or not the vehicle is traveling at a high speed. If the vehicle is not traveling at a high speed, the medium speed mode is executed. If the vehicle is traveling at high speed, high speed mode is executed.

Once the wiper mode is determined and executed in this manner, the process returns to step 110 and the above operations are repeated.

As described above, the present invention allows you to first manually set the wiper mode, and if you do not instruct automatic control, you can control the wiper drive with that manual setting, and if you instruct automatic control, then The wiper mode is automatically and appropriately changed according to the vehicle speed.

Therefore, there is an effect that raindrops can be appropriately wiped off according to the amount of raindrops that changes according to the traveling speed of the automobile.

[Brief explanation of the drawing]

Fig. 1 is a diagram clearly showing the configuration of the present invention, Fig. 2 is a diagram showing the characteristics of an embodiment of the invention, Fig. 3 is a circuit diagram showing the above embodiment in more detail, and Fig. 4 is a diagram showing the characteristics of an embodiment of the invention. It is a flowchart showing the operation in the above embodiment. 10... Wiper mode storage means, 20... Wiper mode initial setting means, 30... Auto control setting means, 4
0... Vehicle speed measuring means, 50... Wiper mode determining means, 60... Motor drive control means, 70... Wiper motor, Patent applicant: Japan Radiator Co., Ltd. 11-

Claims (1)

[Claims] wiper mode storage means for storing the contents of a plurality of wiper modes; wiper mode initialization means for initializing one of the wiper modes; vehicle speed measurement means for measuring vehicle speed; an automatic control setting means for making settings for automatically changing the mode; a wiper mode determining means for determining the wiper mode according to the initially set wiper mode and the vehicle speed at that time; Motor drive control 1 that controls the drive of the wiper motor according to the wiper mode
An auto wiper for an automobile, characterized in that it has one means.