KR19980049761A - Car wiper pressure variable system - Google Patents

Abstract

By increasing the wiping performance by varying the pressure of the wiper blade that is in close contact with the windshield glass while driving, it is possible to increase the wiping performance, and to improve the visibility when wiping, the spring is installed between the main wiper arm and the auxiliary wiper arm. An automobile wiper comprising elastic adjustment means for adjusting the elastic force by varying the length, control means for controlling the elastic adjustment means for adjusting the elastic force of the spring in accordance with the vehicle speed, and switching means for operating the control means. Provide a pressure variable system.

Description

Car wiper pressure variable system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable wiper pressure system for an automobile, and more particularly, to a variable wiper pressure variable system for a vehicle, wherein the pressure of the wiper blade that is in close contact with the windshield glass may be improved while driving. will be.

In general, most vehicles are provided with windshield wipers to clean the windshield glass during rain or snow to secure the driver's watch and allow the driver to drive safely.

The windshield wiper is classified into a vibrating, electric, and electronic type according to a driving source. Currently, the windshield wiper is mainly used to rotate an electric motor by a current of a storage battery.

The electric windshield wiper is composed of a drive unit for generating power, a link unit for transmitting the power, and a blade mounted on the link unit for wiping the windshield glass.

The rotational force of the wiper motor, which is the driving part, is reciprocated by the wiper spindle link, and the link and the shaft connected to the wiper spindle link are reciprocated, and the auxiliary wiper arm and the main wiper connected to this axis The arm reciprocates.

This wipes the snow or rain water on the wiper blade windshield glass (not shown) coupled to the tip of the main wiper arm.

On the other hand, the wiper blade is in close contact with the windshield glass when a wiper blade elastic force is added to easily contact the windshield glass and wipe off the foreign matter.

In order to add elastic force to the wiper blade, a pin is coupled between the main wiper arm and the auxiliary wiper arm, and a spring is provided between the two arms.

However, in the related art, when the vehicle travels at a high speed, vibration is generated by the air flowing outside the vehicle, and the wiper pressure is reduced, so that there is a problem in that the performance of removing foreign substances in the windshield glass is degraded.

Accordingly, the present invention has been invented to solve such a problem in the related art, and an object of the present invention is to increase the wiping performance by varying the pressure of the wiper blade that is in close contact with the windshield glass while driving, depending on the driving speed, thereby increasing the wiping performance. It is to provide a wiper pressure variable system of a vehicle that can improve the time of day.

In order to realize this, the present invention provides elastic adjustment means for adjusting the elastic force by varying the length of the spring installed between the main wiper arm and the auxiliary wiper arm, and the elastic adjustment means for adjusting the elastic force of the spring in accordance with the vehicle speed. It provides a vehicle wiper pressure variable system comprising a control means for controlling the control means, and a switching means for operating the control means.

Such a device causes water droplets in the windshield glass to interfere with the watch in the event of snow or rain, and when the switching means are activated, the control means determines the vehicle speed and operates the elastic adjustment means to adjust the wiper pressure that is set to the vehicle speed. .

1 is a side cross-sectional view of a wiper pressure variable system of a vehicle according to the present invention.

2 is a block diagram of a wiper pressure variable system of an automobile according to the present invention.

Hereinafter, the preferred configuration and application of the present invention will be described in more detail with reference to the accompanying drawings.

1 and 2 illustrate a wiper pressure variable system according to the present invention, which is coupled to the main wiper arm 3 and the hollow wiper shaft 5 to which the wiper blade 1 is coupled. By varying the length of the spring (9) coupled between the auxiliary wiper arm (7) is to adjust the wiper pressure.

The wiper blade 1 wipes off the foreign matter generated in the windshield glass 11 and is in close contact with the windshield glass 11 by the spring 9.

The system of the present invention includes elastic adjustment means for changing the length of the vane spring 9 and control means for controlling the elastic adjustment means.

The elastic adjustment means is a gear 15 coupled to the rotation shaft of the motor 13, the auxiliary wiper arm 7 is rotated undulating and the wiper shaft 5 formed in the hollow shaft, and the reciprocating motion in the longitudinal direction The rod 17 is mounted on the hollow shaft and is disposed on one end of the rod 17 which forms a tooth engaging with the gear on one surface thereof, and the rod 17 which protrudes inside the auxiliary wiper arm 7. In order to be rotated by the longitudinal movement of the central portion of the secondary wiper arm (7) is made of a lever (19) for engaging the spring (9) coupled to the inner side of the secondary wiper arm (7) to the main wiper arm (5).

Of course, the link 21 is coupled to the lower end of the wiper shaft (5) is a structure that rotates the reciprocating motion with the link (21).

On the other hand, the control means is a vehicle speed sensor 23 for detecting the speed of the vehicle in which the wiper pressure variable, the vehicle speed sent from the vehicle speed sensor 23 is determined and compared to output a predetermined output current to the motor 13 And a controller 25 for controlling the pressure and the protrusions 27 formed on one surface of the rod 17 to determine the amount of rotation of the motor 13 and sense the movement of the protrusions and send them to the controller 25. Rotation amount detector 29 is made.

The rotation amount detector 29 is a variable resistor that changes the current value by the change in the resistance value and outputs it to the controller.

Of course, the above system further includes a switching means because it is operated by the on / off operation of the switch, which is preferably a wiper switch 31.

This system is operated in the case of snow or rain, and easily removes foreign substances generated in the windshield glass 11.

When the pins of the lever 19 and the lengthwise direction of the spring 9 coincide with each other, the elastic force is the smallest because the length of the spring 9 is the shortest.

If foreign matter is generated on the outer surface of the windshield glass 11 when the vehicle is running in this state, the driver turns on the wiper switch 31 and the controller 25 is operated by the connection of the wiper switch 31. do.

The controller 25 receives the speed of the vehicle from the vehicle speed sensor 23 and operates the motor 13 to have a predetermined wiper pressure.

At this time, the gear 15 is rotated by the operation of the motor 13, the gear 15 operates the rod 17.

Thus, the rod 17 rotates the lever 19 to change the length of the spring 9.

In this process, the variable resistor detects a change in the amount of rotation of the motor 13 or the position of the rod 17 and transmits the change to the controller 25. The controller 25 adjusts the position of the rod 17. By comparing the current spring elastic force, the wiper pressure is controlled.

As described above, since the length of the spring installed between the main wiper arm and the auxiliary wiper arm is variable according to the vehicle speed, and thus the wiper pressure is variable, the reduction of the wiper pressure can be prevented by the vehicle speed, and the clock can be improved. There is an advantage.

Claims (6)

Elastic adjustment means for adjusting the elastic force by varying the length of the spring provided between the main wiper arm and the auxiliary wiper arm; control means for controlling the elastic adjustment means to adjust the elastic force of the spring in accordance with the vehicle speed; A vehicle wiper pressure varying system comprising a switching means for activating the means. The method according to claim 1, wherein the elastic adjustment means is coupled to the rotary shaft of the motor, the wiper shaft for reciprocating the auxiliary wiper arm is formed in the hollow shaft, the rod reciprocating in the longitudinal direction is mounted on the hollow shaft, A tooth engaging with the gear is formed on one side of the rod, and a lever is disposed at one end of the rod which protrudes inside the auxiliary wiper arm, and the center portion of the lever is rotated to rotate the lever by the longitudinal movement of the rod. A variable wiper pressure control system for a vehicle, characterized in that it has a structure that pin-couples the inside of the auxiliary wiper arm and connects a spring, one end of which is coupled to the main wiper arm, to the lever. The method according to claim 1, wherein the control means comprises a vehicle speed sensor for detecting the speed of the vehicle, a controller for determining and comparing the vehicle speed sent from the vehicle speed sensor, a motor operated by the output current emitted from the controller, A wiper pressure variable system for a vehicle, characterized in that the rotation amount sensor is used to determine the amount of rotation and send it to the controller. The method of claim 1, wherein the elastic adjustment means is a structure for changing the length of the spring by a rod operated by a motor, the control means is a vehicle speed sensor for detecting the speed of the vehicle, and the vehicle speed sent from the vehicle speed sensor A motor comprising a controller for receiving and comparing, a motor operated by an output current emitted from the controller, and a rod displacement detector which is operated by a protrusion on one surface of the rod and determines the displacement of the rod and sends it to the controller. Wiper pressure variable system. 5. The variable wiper pressure system according to claim 3 or 4, wherein the rotation amount sensor is a variable resistor that sends a change amount of current to the controller by a change in resistance value. The system of claim 1, wherein the switching means is a wiper switch for operating the wiper.