JPH0533189B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in an automobile headlamp cleaner that spouts washing water to clean the headlights of an automobile while the car is running, and in particular, to remove deposits in advance during cleaning. The present invention relates to a cleaning water injection method for an automobile headlamp cleaner that repeatedly sprays water intermittently a plurality of times so as to wet the headlamp and then rinse it off for cleaning.

[Conventional technology]

Conventionally, a cleaning device that sprays high-pressure cleaning water from a cleaning water spray nozzle installed in front of the headlamp has been used as a headlamp cleaner to clean dirt, insects, etc. that adhere to car headlamps while driving and restore light emission performance. This type of equipment has a structure in which a water supply pump that supplies cleaning water is driven by a motor, and the motor is electrically intermittent to spray or stop the cleaning water. .

[Problem that the invention seeks to solve]

However, according to the above method of intermittent control of washing water,
Since the output side of the water supply pump, that is, the cleaning water injection nozzle, is always open to the atmosphere, as shown in Figure 3, even if the motor is driven during injection, the cleaning water jetted from the cleaning water injection nozzle does not have an effective injection force. When the rise time t1 until reaching the predetermined water pressure P1 to be exerted becomes extremely long, the washing water that flows out during this rise time t1 is wasted, and the energization to the motor is stopped to stop the injection of washing water. However, there was a problem in which the low-pressure cleaning water flows out from the cleaning water injection nozzle at the end time t2 until the cleaning water on the output side of the water pump reaches equilibrium with the atmospheric pressure, resulting in wasted cleaning water. .

In recent years, many headlamp cleaners of this type have been used that moisten the deposits on the headlamp surface in advance and then repeatedly spray the headlamp surface.One cleaning operation moistens the motor according to the energization control program. An intermittent operation method is adopted. However, in this case, there is a problem in that the above-mentioned wastage of washing water occurs every time the motor is turned on and off, and in particular, in the case of washing water that has a limited amount of water storage, such as those installed in automobiles, it is difficult to use washing water effectively. It was wanted.

The present invention was devised in view of the above problem, and the cleaning water jetted from the cleaning water jet nozzle is
The object of the present invention is to propose a cleaning water injection method for an automobile headlamp cleaner that can maintain a predetermined water pressure during outflow and eliminate unnecessary outflow.

[Means for solving problems]

In order to achieve the above object, a cleaning water injection method in an automobile headlamp cleaner according to the present invention is provided in the vicinity of a cleaning water injection nozzle of a communication pipe that communicates a cleaning water injection nozzle provided in front of a headlamp with a cleaning water tank. A solenoid valve is provided on the washing water tank side of the solenoid valve, and a pressurized water supply pump driven by a motor is interposed on the wash water tank side of the solenoid valve, and a solenoid valve timer and a solenoid valve timer are provided in which the solenoid valve and the motor are respectively synchronized with an appropriate time difference. The structure is such that the drive is controlled by a motor timer, and after a predetermined time has elapsed after the motor is driven, the solenoid valve is opened to inject cleaning water, and when the jetting of the cleaning water is stopped, the solenoid valve is first closed. ,
The gist is that the motor is configured to stop immediately after that.

Alternatively, the electromagnetic valve may be opened and closed for a predetermined injection time to perform intermittent injection while the motor is maintained in a driving state.

[Effect]

According to the above injection method, as shown in the timing chart of FIG. 2, since the motor is driven from a predetermined time t1 before the solenoid valve is always opened, the motor is closed in front of the cleaning water injection nozzle during that time. The washing water is sprayed at a predetermined injection pressure P1 by a pressurized water pump.
The pressure is increased to a pressure P2 exceeding . Since the solenoid valve is opened from this state while continuing to drive the motor, the cleaning water injected from the cleaning water injection nozzle maintains the pressure P1 of the pressurized water pump and removes the mud attached to the headlamp surface. Or wash insects etc. After that, the solenoid valve opens when the motor stops, so the injection pressure of the cleaning water jetted from the cleaning water injection nozzle is maintained at a substantially constant level from the start to the end of the injection, and the rising time t2 and the end of the injection are kept constant. Since the time T4 is extremely shortened, this has the effect of suppressing the outflow of wasted cleaning water that is not used for cleaning.

In addition, especially when performing intermittent injection of cleaning water,
Since the motor continues to be driven from the start to the end of intermittent injection, the pressurized water pump driven by the motor maintains the injection pressure of cleaning water above a predetermined pressure, resulting in an automotive head with high cleaning efficiency. A cleaning water injection method for lamp cleaners has been achieved.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a washing water injection device for implementing the washing water injection method for an automobile headlamp cleaner according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram illustrating a structure for implementing the cleaning water injection method according to the present invention.
The discharge side port of the pressurized water pump 4 is connected as close as possible to the inlet pipe 2 of the cleaning water injection nozzle 1, which is fixedly installed on the bumper B so as to open the injection port toward the head lamp L of the automobile, via the solenoid valve 3. At the same time, the suction side port of the pressurized water supply pump 4 is connected to a washing water tank 6 equipped with an automobile via a water passage pipe 7 to form a water supply line. .

The pressurized water supply pump 4 is driven by a motor 8 and has a structure that supplies water at a predetermined pressure P1 to the discharge side port, and the motor 8 is controlled ON/OFF by a motor timer 9. A control system is constructed in which the solenoid valve 3 is driven by a timing control device 11 configured to control ON/OFF operation of the solenoid valve 3 by a solenoid valve timer 10.

The cleaning water injection device for the headlamp cleaner configured as described above cleans the head lamp cleaner multiple times with cleaning water, for example, when a single cleaning operation performs preliminary cleaning to moisten deposits and main cleaning to wash away the deposits. When water is ejected from the water injection nozzle 1, it operates as shown in the timing chart of FIG.

First, the motor 8 is turned on, and the pressurized water supply pump 4 is driven, and after a predetermined time t1, the solenoid valve 3 is opened. During the above-mentioned time t1, due to the initial drive of the pressurized water supply pump 4, the wash water W, which is closed by the electromagnetic valve 3 in front of the wash water injection nozzle 1, is pressurized to a pressure P2 exceeding the predetermined injection pressure P1. When the electromagnetic valve 3 is opened from this state while continuing to drive the motor 8, the cleaning water W is jetted from the cleaning water injection nozzle 1 toward the head lamp L. Washing water W at this time
Since the water pressure in the ejection is at a pressure P2 that exceeds the pressure P1 of the pressurized water supply pump 4, the rise time t2 to reach the predetermined amount of water is extremely short, and the pressure P1 of the pressurized water supply pump 4 is maintained. Clean mud or insects adhering to the L surface of the head lamp.

After the injection for a predetermined time t3, when the electromagnetic valve 3 is opened, the injection of the cleaning water W is stopped after a short end time t4. During this time, since the motor 8 is maintained in a driving state, the cleaning water W closed by the solenoid valve 3 is
The pressure is increased to a pressure P2 that exceeds the predetermined injection pressure P1, and when the solenoid valve 3 is opened again after the predetermined stop time t5 has elapsed, the cleaning water is directed from the cleaning water injection nozzle 1 to the head lamp L and a predetermined pressure P1 and a predetermined amount of water are cleaned. Water W
gushes out. By repeating this, intermittent injection is performed a predetermined number of times.

Thereafter, when the motor 8 is stopped and the electromagnetic valve 3 is immediately closed (elapsed time t6), the cleaning water W jetted from the cleaning water injection nozzle 1 stops after a short end time t7.

It is also possible to open the solenoid valve 3 and stop the injection of the cleaning water W prior to stopping the motor 8, and the same effect can be obtained.

〔Effect of the invention〕

Since the cleaning water injection method in the automotive headlamp cleaner according to the present invention is configured as described above, the cleaning water that has been pressurized to a predetermined pressure is injected from the cleaning water injection nozzle. The water pressure of the ejected cleaning water is maintained at a predetermined value for almost the entire time it is flowing out, eliminating unnecessary outflow, so it can be used especially when there is a limit to the amount of water that can be stored, such as in head lamp cleaners installed in automobiles. This method is useful for certain types of cleaning water, and the effects after implementation of the present invention are extremely large.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the structure for carrying out the washing water injection method in an automobile headlamp cleaner according to the present invention, FIG. 2 is a timing chart showing the driving method of the device, and FIG. 3 is a This is a timing chart showing a conventional injection state. 1...Washing water injection nozzle, 3...Solenoid valve, 4...
...Pressure water supply pump, 6...Washing water tank, 8...
Motor, 9... Motor timer, 10... Solenoid valve timer, 11... Timing control device, L...
Head lamp, W...Washing water.

Claims (1)

[Claims] 1. A solenoid valve is provided near the cleaning water injection nozzle of a communication pipe that communicates the cleaning water injection nozzle provided in front of the headlamp with the cleaning water tank, and a motor is connected to the cleaning water tank side of the electromagnetic valve. A pressurized water supply pump is installed to drive the solenoid valve and the motor, and the solenoid valve and the motor are controlled by a solenoid valve timer and a motor timer, respectively, which are synchronized with an appropriate time difference. The vehicle is characterized in that the solenoid valve is opened to inject cleaning water through the process, and when the jetting of the cleaning water is stopped, the solenoid valve is first closed, and then the motor is immediately stopped. Cleaning water injection method for head lamp cleaner. 2. The method of injecting cleaning water in a headlamp cleaner for an automobile according to claim 1, wherein the electromagnetic valve is opened and closed for a predetermined injection time to perform intermittent injection while maintaining the motor in a driving state.