JPS59120552A - Washer interlocking with wiper device - Google Patents

Abstract

PURPOSE:To prevent the damage of a glass surface that is caused by dirt and such by detecting washer liquid that arrives at a washer nozzle, subsequently turning on a wiper drive circuit. CONSTITUTION:When the movable contact 15a of a wiper switch 15 is switched into a fixed contact 15b3 and this switch 15 is turned on, a switch 18 is also turned on interlocking with the switch 15. Consequently, a washer supply circuit 16 is closed and a drive motor 17 is driven. A washer pump is operated and washer liquid is sent to a washer nozzle 4. When this liquid 4 arrives at the nozzle 4, an ON-OFF valve 9 is opened and the washer liquid is injected on a glass surface from an injection port 4b. Then when the valve 9 is opened, a switch 11 is turned on. As a result, a wiper drive circuit 12 is closed and a drive motor 13 is driven and then the wiper is operated.

Description

[Detailed description of the invention] The present invention relates to a washer linked wiper device.

Figure 1 shows a conventional washer-operated wiper device.
There is one shown in Figure 2. Fig. 1 is a vehicle layout diagram of the device, and Fig. 2 is a schematic explanatory diagram of the washer fluid supply system. A washer pump is provided adjacent to the washer tank 2, 4 is a washer nozzle provided above the rear window glass 5 at the rear of the vehicle body 1, and 6 connects the washer nozzle 4 to the washer pump 3. There is a washer tube, 7 is a rear wiper, and there is a washer tube as shown in the illustration.
When you turn on the wiper sequence switch, the washer
The pump 3 and the rear wiper 7 are driven simultaneously, and the washer liquid supplied from the washer pump 3 to the washer nozzle 4 via the washer tube 6 is injected from the injection port 4b provided in the washer nozzle 40 main body 4a. It is supplied to the rear window glass 5 surface, and in this state, the blade 7a of the rear wiper 7 wipes the rear window glass 5 surface.

However, in such a conventional washer synchronized wiper device, the distance from the washer pump 3 to the washer nozzle 4 is long, so there is a time delay from when the switch is turned on until the washer fluid is sprayed. Therefore, the blade 7a wipes the 5 surfaces of the rear window glass before the Wonsher liquid is supplied to the 5 surfaces of the rear window glass, and the 5 surfaces of the rear window glass are damaged by dust, etc., and dirt is removed. There was a problem in that it rubbed against the five glass surfaces and obstructed visibility.

The present invention has been made in view of these conventional problems, and includes a detection means for detecting the arrival of washer fluid at the washer nozzle, and a wiper contact that is closed by the operation of the detection means. It is an object of the present invention to solve the above-mentioned problems by inserting the wiper blade into a drive circuit and driving the wiper blade after the washer fluid is injected from the washer nozzle.

Hereinafter, the present invention will be explained based on the drawings.

FIG. 3 is a diagram showing an embodiment of the present invention. Parts that are the same as those in the prior art are designated by the same reference numerals and their explanations will be omitted.

In the present invention, a detection means 8 for detecting that the washer liquid has arrived at the washer nozzle 4 is provided. This detection means 8 consists of an on-off valve 9 inserted into the flow path 4C of the main body 4a of the wash nozzle 4, and a spring 10 that keeps this on-off valve 9 in a normally closed position, and when the wash water liquid arrives. The pressure causes the on-off valve 9 to open against the force of the spring 10. A contact 11 that closes when the on-off valve 9, which is the main component of the detection means 8, is activated is fixed to the on-off valve 9. A movable contact 11a provided thereon, and a fixed contact 11b fixedly provided on the main body 4a,
Ilb is inserted into the wiper drive circuit 12. The wiper drive circuit 12 includes a drive motor 13 for the rear wiper 7, a power source 14, and a wiper switch 15 connected in series. 16 is a washer supply circuit, which includes a drive motor 17 for the washer pump 3;
The power source 14 and the washer switch 18 are connected in series. The wiper switch 15 and the washer switch j8 have their respective movable contacts 15a, 18
a is moving, and its fixed contacts 15b, , 15
b, , 15b, and 18b, .

18b, , 18b correspond to each other.

Fixed contacts 15b, , 15b of wiper switch 15
, ,15b.

are OFF, OFF, and ON contacts, respectively, and the corresponding fixed contacts 18b5, 18b of the washer switch 18,
.

18b are OFF, ON, and ON contacts, respectively.

In addition, 4d is a synthetic resin camp that covers the main body 4a, 1
9 is a lead wire, addition is a grommet, and 6 is a wonsher tube.

With this configuration, the movable contact 1 of the wiper switch 15
．． 5 a is turned on from the fixed contact 15b1 which is the OFF contact
When the fixed contact 15b3 is switched to the fixed contact 15b3, the movable contact 18a of the washer switch 18 is switched to O.
The fixed contact 18b, which is an FF contact, is switched to the fixed contact 18b3, which is an ON contact. As a result, the washer supply circuit 16 is closed, the drive motor 17 rotates, the washer pump 3 is driven, and the washer liquid is sent to the washer nozzle 4. However, initially in this state, no washer fluid has arrived at the washer nozzle 4.
The on-off valve 9 remains closed. Therefore, the contact 11 remains open, and even though the movable contact 18a is in the ON position, the wiper drive circuit 12 remains open and the drive motor 13 of the rear wiper 7 is stopped. However, when the washer liquid arrives at the shear nozzle 4 after a certain period of time has elapsed, the on-off valve 9 opens against the force of the spring 10, and the washer liquid is injected from the injection port 4b and hits the rear window glass 5. supplied to the surface. In this way, when the on-off valve 9 moves and detects the arrival of washer liquid, the movable contact 1.1a integrated with the on-off valve 9 contacts the fixed contact 1.1b.
, , 1lb2 is contacted and the contact 11 is closed. Thus, the wiper drive circuit 12 is closed, the drive motor 13 rotates, and the rear wiper 7 is driven. In this state, the washing liquid has already been supplied to the rear window glass 5, so there is no possibility that the surface of the glass 5 will be damaged by dust or the like, or that dirt will not be rubbed onto the surface of the glass 5.

On the other hand, when the wiper switch 15 is turned Off, the drive motors 13 and 17 are stopped simultaneously, and the pressure of the washer fluid reaching the washer nozzle 4 is reduced, and the on-off valve 9 is closed and the rear window glass 5 is closed. The washer fluid supply to the surface stops.In this state, the rear wiper 7
Since the drive motor 13 operates by inertia for a short time even though the drive motor 13 is stopped, no washer fluid is left behind.

In addition, in the circuit of the embodiment, if the movable contact 15a of the wiper switch 15 is connected to the fixed contact 15b2, it is also possible to supply only washer fluid.

” - In the explanation, an example of application to a rear wiper was shown, but
Of course, the present invention may be applied to a front wiper.

As explained above, according to the present invention, the wiper blade is driven only after the washer fluid is jetted from the washer nozzle, so that dust and the like can damage the glass surface, and dirt can rub against the glass surface and impair visibility. This provides the effect of being able to prevent this from occurring. Further, the embodiment has the advantage that no washer fluid is left behind.

[Brief explanation of drawings]

FIG. 1 is a vehicle layout diagram of a washer-operated wiper device, FIG. 2 is a schematic explanatory diagram of a washer liquid supply system, and FIG. 3 is a configuration diagram including an electric circuit according to an embodiment of the present invention. 4... Washer nozzle, 7...
...Rear wiper, 8...Detection means, IX...Contact, 12...
...Wiper drive circuit.

Claims (1)

[Claims] What is claimed is: 1. A continuous action wiper device, characterized in that a detecting means for detecting the arrival of a washer liquid at a washer nozzle is provided, and a contact that closes when the detecting means is activated is inserted into a wiper drive circuit.