JPH0253655A - Wiper control device - Google Patents

Abstract

PURPOSE:To prevent a wiper from being broken down or damaged by controlling wiper driving such as to stop the action of a wiper when the detected action speed of the wiper is less than the action speed determined according to the specified action mode. CONSTITUTION:A wiper action mode setting means 2 for setting the action state of a wiper 1 such as the actuation, hang-up and acting speed and the like of the wiper 1 and a wiper operating state detecting means 3 for detecting the operating state of the wiper 1 such as the acting speed, the starting point angle, the arm position, and the like of the wiper 1 are provided. A wiper control means 5 determines the action of the wiper 1 on the basis of the wiper action mode set by means of the setting means 2 and the detected result of the detecting means 3 and controls a wiper driving means 4. The wiper control means 5 further controls the wiper driving means 4 such as to stop the action of the wiper 1 when the action speed of the wiper 1 is less than the action speed determined according to the specified action mode.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a wiper control device for wiping the front windshield of an automobile, and in particular, the invention relates to a wiper control device for wiping the front windshield of an automobile, and in particular, for automatically controlling the operation and stopping of the wiper according to the operating speed of the wiper. The present invention relates to a wiper control device that prevents wiper failure and damage and reduces the burden on the driver.

[Prior Art] For example, in the driver's seat of a car, there is a wiper or
There is an on/off switch that specifies whether the wiper should be stopped, and an operation speed setting switch that specifies whether the wiper should operate at high speed, low speed, or intermittently.The driver can operate these switches. The wiper operation is set and the wiper is driven accordingly. Therefore, conventionally, the driver manually operated various switches to change the operating speed of the wiper or to switch between operating and stopping the wiper.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional wiper control device, its operation is defined only by the setting state of switches etc.
For example, even when the load on the wiper is greater than during normal operation, such as when there is snow on the front or rear window where the wiper operates, the wiper drive device is determined according to the settings of switches, etc. Trying to forcefully wipe the window at the operating speed. However, due to the large load, the wiper can only operate at a speed lower than the set operating speed, which may lead to excessive wear of the wiper blade, breakage of the wiper arm, or failure of the motor that drives the wiper. or

Another disadvantage is that in this case, the driver has to perform cumbersome operations such as manually operating the wiper intermittently because it is unclear whether the wiper will be able to wipe off the accumulated snow on the window.

The present invention has been made in view of such problems, and includes:
To prevent excessive wear, breakage, failure, etc. of the wiper by automatically stopping wiper operation when the actual operating speed of the wiper is lower than the operating speed determined according to the setting state of a switch, etc. An object of the present invention is to provide a wiper control device that can reduce the burden on a driver.

[Means for Solving the Problem] As shown in the functional block diagram of FIG. 1, the wiper control device according to the present invention sets the operating state of the wiper 1, such as activation, stoppage, and operating speed of the wiper 1. a wiper operation mode setting means 2; a wiper operation state detection means 3 for detecting the operating state of the wiper 1, such as the operating speed, swing angle, and arm position of the wiper 1; and a wiper driving means 4 for driving the wiper 1;
Wiper 1 set by wiper operation mode setting means 2
The wiper control means 5 determines the operation of the wiper 1 based on the operation mode and the detection result of the wiper operation state detection means 3, and controls the wiper drive means 4.

The wiper control means 5 controls the wiper 1 when the operating speed of the wiper 1 detected by the wiper operating state detecting means 3 is smaller than the operating speed determined according to the operating mode set by the wiper operating mode setting means 2. The wiper drive means 4 is controlled to stop the operation.

[Function] According to the present invention, the load on the wiper 1 increases, and the actual operating speed of the wiper 1 changes to the wiper operating mode setting means 2.
When the operating speed becomes lower than the predetermined operating speed set by , the wiper control means 5 stops the wiper driving means 4 from driving the wiper 1 . Therefore, abnormal wear, breakage, and failure of the wiper are prevented, and the burden on the driver is also reduced.

[Example] Next, an example of the present invention will be described with reference to the accompanying drawings. FIG. 2 is a system schematic diagram showing a wiper control device according to an embodiment of the present invention.

As shown in FIG. 2, the wiper 1 is driven by a motor 7 via a link mechanism 6. As shown in FIG. A sensor 8 for detecting the rotation speed of a motor such as a pulse generator is attached to the motor 7, and the rotation speed detection result of the motor 7 by the motor rotation speed sensor 8 is input to the control unit 9. Further, the control unit 9 detects the actual operating speed V of the wiper 1 based on the rotation speed of the motor, the reduction ratio of the link mechanism 6, and the like.

On the other hand, the control unit 9 also receives the output of a wiper mode switch 10 that sets the start and stop of the wiper and the operating modes such as intermittent operation, low-speed operation, and high-speed operation, and the setting state of the wiper mode switch 10 is inputted to the control unit 9. A desired operating speed V of the wiper 1 is determined according to the following.

In a wiper control device configured in this way, if snow is present on the window to be wiped, the wiper 1
When the load on the wiper 1 is large and the actual operating speed V of the wiper 1 is smaller than the operating speed ■ determined by the setting state of the switch 10, the control unit 9 controls the motor 7 to stop the operation of the wiper 1. . This prevents excessive wear, breakage, failure, etc. of the wiper 1. Furthermore, the driver does not have to perform the troublesome operation of operating switches depending on the load condition, which reduces the burden on the driver.

In this embodiment, the wiper mode switch 10 is used as the wiper operation mode setting means 2, which is a component of the present invention.
A motor rotation speed sensor 8 serves as the wiper operating state detection means 3.
Although the motor 7 is used as the wiper drive means 4 and the control unit 9 is used as the wiper control means 5, it goes without saying that the present invention can be embodied by means other than the above. .

[Effects of the Invention] As explained above, the present invention automatically controls the operation stop of the wiper according to the operating speed of the wiper, so that extreme wear, failure, and damage of the wiper can be prevented, and This has the effect of reducing the burden on the driver.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram of the present invention, and FIG. 2 is a system schematic diagram showing an embodiment of the present invention. 1; wiper, 2; wiper operation mode setting means, 3; wiper operation state detection means, 4; wiper drive means, 5; wiper control means, 6; link mechanism, 7; motor, 8; motor rotation speed sensor, 9; Control unit, 10; wiper mode switch

Claims (1)

[Claims] (1) Wiper operation mode setting means for setting a desired operating state of the wiper, wiper operating state detection means for detecting the operating state of the wiper, wiper driving means for driving the wiper, and setting by the wiper operating mode setting means. and a wiper control means for determining wiper operation based on the determined wiper operation mode and the detection result of the wiper operating state detection means and controlling the wiper drive means, wherein the wiper control means The wiper drive means is configured to stop the wiper operation when the wiper operation speed detected by the wiper operation state detection means is smaller than the operation speed determined according to the operation mode set by the wiper operation mode setting means. A wiper control device characterized in that: