JPH0454004Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to, for example, an automobile interior/exterior air switching device, and particularly relates to an automobile interior/external air switching device equipped with a washer device.

[Prior Art] An example of a conventional washer device is shown in FIG. 2 (see Japanese Utility Model Application No. 126137/1983). FIG. 2 shows a washer device 101 installed in a vehicle, which includes a first tank 103 containing a cleaning liquid for oil film removal and a second tank 105 containing water. The first tank 103 and the second tank 105 are each equipped with pumps 107 and 109, and these pumps 107 and 109 are each equipped with a switch 11.
1,113 to a battery 115 which is a power source.

Since the switches 111 and 113 can be opened and closed individually, the liquid can be selectively applied to the washer nozzle 12 according to the oil film condition on the front window.
By ejecting water from No. 5,127, the front window can be effectively cleaned.

[Problems to be solved by the invention] However, the above-mentioned device is equipped with an air conditioner having an outside air inlet near the bottom of the front window, and when the air conditioner is in the outside air intake state and the vehicle speed is below a predetermined speed, the air conditioner is used to remove oil film. When spraying cleaning liquid,
The vaporized components of the oil film removing cleaning liquid containing a surfactant or a solvent and having a characteristic chemical odor are introduced into the vehicle interior through the air conditioner together with the outside air. As a result, there was a problem in that a chemical odor filled the vehicle interior.

This device was devised in view of the above-mentioned problem, and is an automotive device that prevents the vaporized components of the oil film removal cleaning liquid from entering the passenger compartment even if the oil film removal cleaning liquid is injected when the vehicle speed is below a predetermined speed. The purpose is to provide an inside/outside air switching device.

[Means for Solving the Problems] In order to achieve the above object, this invention includes a first tank containing a cleaning liquid for oil film removal and a second tank containing water, A washer device is provided that selectively injects the liquid contained in the first and second tanks from a washer nozzle to the front window of the vehicle body, and includes an outside air intake port that opens near the bottom of the front window and an inside air intake port that opens into the interior of the vehicle. an air conditioner that can be opened and closed by a switching means, and a drive means for driving the switching means, and when the vehicle speed is below a predetermined vehicle speed, the switching means is controlled according to the injection of the oil film removal cleaning liquid for a predetermined period of time. A control means was installed to close the outside air inlet and forcibly switch to inside air circulation.

[Operation] When the vehicle speed is lower than a predetermined vehicle speed, the control means controls the switching means according to the injection of the oil film removing cleaning liquid, closes the outside air inlet for a predetermined period of time, and forcibly switches to internal air circulation.

[Example] Hereinafter, an example of this invention will be described based on the accompanying drawings. FIG. 1 shows an embodiment of this invention. First, the same components as before are shown.
tank 3, second tank 5, pumps 7, 9, switches 11, 13, battery 15, check valves 17, 19, 3 wedge joints 21, 23,
It is equipped with wash nozzles 25 and 27. Further, the first tank 3 contains a cleaning liquid for oil film removal, and the second tank 5 contains water.

On the other hand, in the embodiment of this invention, the washer device 1
In addition to the components shown above, the circuit of the first switch 11 is provided with a control unit 29 as a control means. The control unit 29 includes a comparator for comparing the potential of the battery 15 with the potential when the pump 7 is driven, a timer having a circuit holding function for a predetermined time, and the like. A vehicle speed signal from a vehicle speed meter 31 is also input to the control unit 29. An actuator 33 as a driving means is provided on the output side of the control unit 29.

The pumps 7, 9 are connected to the check valves 17,
19 and the three-way joints 21, 23, the wash nozzles 25, 27 are arranged to face the front window of the vehicle body (not shown).

Further, as shown in FIG. 1, the air conditioner 35 includes a blower unit 43 having an outside air inlet 37 opening near the bottom of the vehicle front window, an inside air inlet 39 opening into the vehicle interior, and a fan 41. The blower unit 43 is rotatably provided with an intake door 45 which is a switching means for opening and closing the outside air inlet 37 and the inside air inlet 39 via a hinge 47. A connecting rod 49 provided on the actuator 33 is rotatably attached to the intake door 45 . Incidentally, the blower unit 43 is connected to a cleaning unit, a heater unit, and the like.

Next, the operation of the above embodiment will be explained. When the first switch 11 is closed when the vehicle speed is below a predetermined speed when the intake door 45 is in the state where outside air is introduced with the inside air inlet 39 closed (as shown by the solid line), the pump 7 provided in the first tank 3 is activated. . When this pump 7 operates, the oil film removal cleaning liquid contained therein is passed through the check valve 17 and the three wedge joints 21, 23 to the wash nozzles 25, 2.
7 and is sprayed towards the front window.
The injected cleaning liquid for oil film removal removes the oil film on the front window with the operation of the wiper (not shown), flows into the cowl box (not shown) near the lower part of the front window, and then flows from the cowl top side (not shown). leaks out of the vehicle.

On the other hand, the control unit 29 controls the vehicle speed meter 31 by closing the first switch 11.
The vehicle speed signal input from
km/h) or less. As a result of this determination, the control unit 29 outputs a drive signal to the actuator 33. The actuator 33 receiving the drive signal switches the intake door 45 via the connecting rod 49. Therefore, the intake door 45 closes the outside air inlet 37 and closes the inside air inlet 39.
Switches to internal air circulation (indicated by broken line) with open. Note that even if the first switch 11 is closed and the vehicle speed signal is below a predetermined value, the control unit 29 does not output a signal if the internal air circulation mode has already been established. The drive signal transmitted from the control unit 29 is set by a timer built in the control unit 29 so that it is continuously output for a predetermined period of time. Therefore, the intake door 45 is maintained in the internal air circulation mode for a predetermined period of time. Therefore, even though the oil film removal cleaning liquid injected onto the front window evaporates while flowing down to the lower edge of the front window and inside the cowl box due to the slow flow rate of the atmosphere, its vaporized components are absorbed into the outside air inlet 3.
It is diffused into the atmosphere without being fed into the vehicle interior via the air filter 7. and the control unit 2
When the timer built in the actuator 9 is turned off after a predetermined period of time, the operation of the actuator 33 is stopped. Therefore, the connecting rod 49 slidably provided on the actuator 33 is pulled back, and the connected intake door 45 opens the outside air introduction port 37 and closes the inside air introduction port 39, returning to outside air introduction.

Note that the predetermined time set in the timer, that is, the predetermined time for forcing the intake door 45 to circulate the inside air, is the time for injecting the cleaning liquid for oil film removal. Since the time for spraying this cleaning fluid for oil film removal is usually the time it takes for the wiper to reciprocate 2 to 4 times, it is practically appropriate to set the predetermined time to about 1 to 2 minutes. Even if it is long, about 4 to 5 minutes is sufficient. Of course, it is possible to freely change the predetermined time by taking into consideration the vaporization time when the cleaning liquid for oil film removal stays in the cowl box, and the switch 11,
13 is turned ON and OFF, the actuator 33 is operated without using a timer, and the intake door 45 is opened.
It is also possible to perform switching. Furthermore, even when outside air is taken in by ram pressure, it is possible to forcefully drive the inside air circulation to prevent oil film removal cleaning fluid from entering the vehicle interior.

Next, when the vehicle speed exceeds a predetermined speed (for example, 50 km/h), the oil film removal cleaning liquid injected by the strong air flow around the front window is blown away to the roof or side window, and its vaporized components are also washed away from the front window. It does not stay in the cowl box. Therefore, in this case, a forced switch to internal air circulation is not necessary. Furthermore, even when the air conditioner 35 is not in use, when the vehicle speed is below a predetermined speed, the intake door 45 is forcibly driven to circulate internal air as the first switch 11 is closed, allowing the cleaning fluid for oil film removal to flow into the vehicle interior. Of course, it is possible to prevent the intrusion of

[Effects of the invention] As is clear from the above, according to the configuration of this invention, when the vehicle speed is below a predetermined speed, the switching means is controlled in accordance with the injection of the oil film removing cleaning liquid, and the outside air inlet is closed for a predetermined period of time to allow inside air to flow. By forcibly switching to circulation, it is possible to prevent the vaporized components of the cleaning fluid for oil film removal, which have a chemical odor, from entering the passenger compartment together with the outside air through the outside air inlet near the bottom of the front window. Comfortable living can be ensured.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional example. 1... Washer device, 3... First tank,
5...Second tank, 29...Control unit (control means), 33...Actuator (drive means), 35...Air conditioner, 37...Outside air inlet, 39...Inside air inlet, 45... Intake door (switching means).

Claims (1)

[Scope of utility model registration request] It has a first tank containing a cleaning liquid for oil film removal and a second tank containing water, and the liquid contained in the first and second tanks is selectively transferred from the wash nozzle to the front window of the vehicle body. an air conditioning device capable of switching between opening and closing of an outside air inlet opening near the bottom of the front window and an inside air intake opening opening into the vehicle interior using a switching means; and a drive for driving the switching means. A control means is provided for controlling the switching means according to the injection of the oil film removing cleaning liquid when the vehicle speed is below a predetermined speed, closing the outside air inlet for a predetermined period of time and forcibly switching to inside air circulation. An internal/external air switching device for automobiles.