CN204659672U - A kind of active windscreen wiper - Google Patents

Abstract

A kind of active windscreen wiper, belong to vehicular spare parts design field, be primarily characterized in that: active windscreen wiper is the original windshield wiper mechanism of transformation automobile, increase stepping motor, stepping motor and original windshield wiper propulsion source also connect, the input end of stepping motor is connected with electronic control unit ECU, and the mouth of stepping motor is connected with rain brush.The advantages such as the utility model has rain brush swing speed can be changed according to the speed of a motor vehicle, rainfall size or snowfall size, and the clear and safety of driver's seat is good.

Description

An active car wiper device

technical field

The utility model relates to an active automobile wiper device, which belongs to the field of automobile accessories design.

Background technique

The traditional car wiper is composed of a motor, a reducer, a four-bar linkage mechanism, a wiper arm spindle, a wiper blade assembly, etc., and generally has three gears: low speed, high speed, and intermittent. In this wiper device, the swing speed of the wiper is selected by the driver. This windshield wiper is difficult to meet the use requirements in use because it cannot change the swing speed automatically. In the following three situations, the disadvantages of driving car wipers are more obvious: ①In the same amount of rainfall, the faster the vehicle speed, the more rainwater will be on the face. It causes the driver's vision to be unclear, which is not conducive to driving safety; ②If the driver wants to change the swing state of the wiper during driving, he needs to be distracted and manually operate to complete the setting, which increases the driver's burden and is not conducive to driving safety; Moreover, when large raindrops or heavy snowflakes hit the windshield, the swing speed of the wiper is limited, which affects the driver's vision and seriously threatens driving safety.

To sum up, because the swing speed of the existing automobile wiper can not change with the amount of rain or snow and the change of the speed of the vehicle, the problem that is not conducive to driving safety needs to be further improved.

Contents of the invention

The purpose of this utility model is to solve the above problems, to provide an active car wiper device that can automatically adjust the swing speed of the car wiper according to the amount of rain or snow and the speed of the vehicle, which is realized through the following technical solutions: an active Car wiper device, including rain sensor, snow sensor, vehicle speed sensor, electronic control unit ECU and stepper motor. The input terminal of the electronic control unit ECU is connected with the rain sensor, the snow sensor and the vehicle speed sensor, and its output terminal is connected with the stepper motor. The stepper motor is connected in parallel with the original automobile wiper power source, the input end of the stepper motor is connected with the electronic control unit ECU, and the output end of the stepper motor is connected with the wiper.

Compared with the prior art, the utility model has the advantages that the swing speed of the car wiper is automatically adjusted following the change of the vehicle speed, the change of the rainfall or the change of the snow volume, so as to ensure that the driver has a clear vision when driving at different speeds, different rain volumes or snow volumes. The field of vision is conducive to driving safety.

Description of drawings

Fig. 1 is a schematic diagram of the layout of the active wiper device for automobiles described in the present invention.

Detailed ways

Below in conjunction with embodiment accompanying drawing, the utility model is described further.

As shown in Figure 1, the active wiper device for automobiles of the present invention includes a rain sensor, a snow sensor, a vehicle speed sensor, an electronic control unit ECU and a stepping motor. The rain sensor is used to sense the size and quantity of raindrops falling on the windshield; the snow sensor is used to measure the snowfall on the windshield; the vehicle speed sensor is used to detect the speed of the car; the electronic The input terminal of the control unit ECU is connected with the rain sensor, the snow sensor and the vehicle speed sensor, and the output terminal is connected with the stepping motor. The input signal of the electronic control unit ECU includes the amount of rain or snow and the vehicle speed, and the output signal is sent to the stepping motor. The stepper motor is connected in parallel with the original automobile wiper power source, the input end of the stepper motor is connected with the electronic control unit ECU, and the output end of the stepper motor is connected with the wiper.

(1) When the amount of rain or snow remains unchanged and the vehicle speed remains unchanged, the input signals of the rain sensor or the snow sensor and the vehicle speed sensor are transmitted to the electronic control unit ECU, and the electronic control unit ECU outputs The signal is sent to the stepping motor, and the stepping motor does not act, and maintains the original motion state of the wiper.

(2) When the amount of rain or snow remains unchanged and the vehicle speed increases, or when the vehicle speed remains unchanged and the amount of rain or snow increases, or when the amount of rain or snow increases and the vehicle speed increases, the rain sensor or the snow sensor and The input signal of the vehicle speed sensor is transmitted to the electronic control unit ECU, and the electronic control unit ECU outputs a signal to the stepper motor, the direction of rotation of the stepper motor and the wiper input of the original car wiper power source The rotation directions of the shafts are the same, and the two are superimposed. The wiper is jointly driven by the original power source and the stepping motor, and the power of the wiper is increased, thereby increasing the swing speed of the wiper.

(3) When the amount of rain or snow remains unchanged and the vehicle speed decreases, or when the vehicle speed remains unchanged and the amount of rain or snow decreases, or when the amount of rain or snow decreases and the vehicle speed decreases, the rain sensor or the snow sensor and the The input signal of the vehicle speed sensor is transmitted to the electronic control unit ECU, and the electronic control unit ECU outputs a signal to the stepper motor, and the rotation direction of the stepper motor is the same as that of the wiper input shaft of the original automobile wiper power source. The direction of rotation is opposite, and the two are superimposed. The wiper is jointly driven by the original power source and the stepping motor, and the power of the wiper is reduced, thereby reducing the swing speed of the wiper.

The utility model mainly provides an active car wiper device that automatically adjusts the swing speed of the car wiper according to the vehicle speed, rainfall or snow volume to keep the driver's field of vision clear, which can improve driving safety without violating the essence of the utility model. , the structural arrangement of the active car wiper device can be modified accordingly, but these corresponding modifications should all fall within the protection scope of the claims of the present utility model.

Claims (1)

1. An active automobile wiper device, comprising a rain sensor, a snow sensor, a vehicle speed sensor, an electronic control unit ECU and a stepper motor, characterized in that: the input terminal of the electronic control unit ECU is connected to the rain sensor, the The snow sensor is connected to the vehicle speed sensor, the output end of the electronic control unit ECU is connected to the stepping motor, the stepping motor is connected in parallel with the original automobile wiper power source, and the input end of the stepping motor is connected to the The electronic control unit ECU is connected, and the output end of the stepping motor is connected with the wiper.