DE2008199B2 - WIPER SYSTEM FOR MOTOR VEHICLES - Google Patents

Description

The invention relates to a windshield wiper system for motor vehicles, which consists of a wiper switch, a wiper motor and a reset switch controlled by it for the automatic setting the wiper arms with the wiper blades is in a park position.

In these known windshield wiper systems to the wiper motor is supplied via the reset switch that long control potential after switching off the wiper switch until its parking position has been reached. This automatic setting of the windshield wiper system into a parking position has the advantage that the wiper blades are always placed outside the wiping field. It is preferably placed on the lower edge of the window, so that the view of the motor vehicle occupants is no longer impaired.

However, this parked position of the wiper arms with the wiper blades has the disadvantage that the rotating washing brushes cannot clean the area of the window between the discarded wiper blades and the body when washing the motor vehicle in so-called washing streets or washing lanes.

For this reason, various devices have been proposed that a fast and allow easy removal of the wiper arms with the wiper blades. The removal of the wiper arms, however, is not without soiling the hands or especially when the motor vehicle is dirty of clothing.

A windshield wiper system is also known in which the wiper switch has a separate switch-off position in addition to the switch-on position and the park-position switch position; via the park-switch position, the wiper motor is automatically brought into the park position via the reset contact controlled by the wiper motor itself. Occasionally it happens that the windshield wiper is stuck on the windshield and the reset contact is not yet open. The consequence of this is. that the Wkchermotor remains permanently connected to the supply voltage of the crane vehicle. To avoid this, the cable tension can also be switched off by the reset contact via the additional switch-off position of the wiper switch. When the windshield wiper system is switched off, the wiper switch is first set to the parking position and, after the windshield wipers are stopped, to the switched-off position.

It is the object of the invention to provide such; To improve windshield wiper system ^for motor vehicles so that the windshield is completely cleaned without removing the wiper arms with the wiper blades when washing the motor vehicle in car washes or wash lanes.

The windshield wiper system for motor vehicles, consisting of a wiper motor and one above it controlled reset switch for the automatic adjustment of the wiper arms with the wiper blades in a parking position, is characterized according to the invention in that a further switching device is provided, via which the reset potential applied to the reset switch can be switched off.

With this further switching device, the automatic setting of the Wischanlagc can be in the Park position are prevented, so that the wiper arms with the wiper switch Wiper blades can be brought into a central position in which the rotating washing brushes of the Washing system can clean the entire window.

According to one embodiment, the switching device is a switch with two stable switching positions and designed as a break contact, which in one switching position the reset potential to the reset switch switches through and switches off the reset potential from the reset switch in the other switch position.

To make it easier to set the wiper arms with the wiper blades in the middle position, it is also provided that the switching device or the wiper switch has an additional pushbutton switch is connected in parallel to the wiper motor directly or via the reset switch control potential feeds. This push-button switch allows the switch-on times of the wiper system to be kept small, so that the central position the wiper arms can be precisely adjusted with the wiper blades.

To simplify operation, a wide

tere embodiment that the switching device voltage ^^^^^ S ^ JStSZ

and / or the additional push button switch with the Wi- tials 15 via ^ n RucksteUsc ^ ter ÄS ^ d ai ^ h the

switch to a combined switchgear in the AtBsdudWenimgda Wgra ^ to WS

tune in summary, prepared short-circuit circuits are switched on.

4piSSSSS

4psS

is explained in more detail. <" ^e

The wiper motor M is via the terminal 31 b normally closed contact of this? ^^

and 53 controlled by the wiper switch WS. In the return potential 15 ^ _n

the shown switch-off position is the terminal xo off. The wiper motor M can ^ f ^

31 b of the wiper motor M via the closed water switch WS «Ji-J ^ ggg ¹ ^ wfsche -

Normally closed contact of the wiper damper WS, the ground po- sition can be set. There at the ^A ^ ^c hf ^ nd «wiper

potential 31 of the motor vehicle supplied. This Po- switch is immediately the ^ «^^ SS ^ ™

If the reset switch RS only takes effect, the switch-on position can be made fairly precisely

when it has reached its parking position. 15 are performed. _ct "ii, _m " a " Wischanlaee

The left contact is comparable with the central spring Even better EinsteH ^^ g ^ ^of ischanlage

bound. The wiper motor M is short-circuited. can then be achieved if, in addition, a JaM

This short circuit causes after the disconnector Γ5 used ^ £ ^^^

circuit of the reset potential 15 through the course triggers as the

Backflow switch ÄS (right and middle contact fe->. Switch allowed ^ ..

der) a rapid braking of the wiper motor M. wiper system, so that the ^^ '^^^, _t

Wildly the wiper switch WS switched on, then the poor one set very precisely with the wiper blades

this short-circuit circuit is interrupted and can be. _Wee . _ _{Hp (} . Kraftfahrzeuses the

de. · Terminal 53 of the wiper motor M via the Ar- Is after the'Waschendes ^ ^aftf ^ \ ^uge _s ^s ^

make contact of the wiper switch WS the control po- »5 additional SchaUe.nnchtung MS ^^ gstd potential 15 supplied. As long as the wiper switch then receives the wiper motor M via atn »« * «« "

WS maintains its switched-on position, the switch RS is again control potential 15 until it

shear motor M control the wiper system. its parking position ^{err "cht.}

3.

^ .ULKMCl'i-UlltluCl i \ j stun, ι ainaifiiuug, uiwivu ·. .-- ■

The reset switch ÄS is usually one of the wiper mode that stopped operating the windshield wiper system M controlled switching cam, which makes contact arrangement easier.

1 sheet of drawings

Claims (6)

Patent claims: 1. Windscreen washer system for motor vehicles, consisting of a wiper switch, a wiper motor and a reset switch controlled by it for the automatic setting of the wiper arms with the wiper blades in a parking position, characterized in that a further switching device (MS) is provided xo via which the the reset potential (15) applied to the reset switch (RS) can be switched on and off. 2. Windshield wiper system according to claim 1, characterized in that the switching device (MS) is designed as a switch with two stable Schaltstellun gene . 3. Scheii wiper system according to claim 1 and 2, characterized in that the switching device (MS) is designed as a normally closed contact, which in the one switching position the restoring potential (15) to the reset switch (RS) and in the other switching position the restoring potential (15) switched off by the return switch (RS) . 4. Windshield wiper system according to claim 1 to 3, characterized in that the switching device (MS) or the wiper switch (WS) an additional push button switch (TS) is connected in parallel, which your wiper motor (M) directly or via the reset switch (RS) control potential ( 15) feeds. 5. Windshield wiper system according to claim 1 to 4, characterized in that the switching device (MS) and / or the additional push button switch (TS) are combined with the wiper switch (WS) to form a combined switching device. 6. Windshield wiper system according to claim 4; .ind 5, characterized in that in the case of a wiper system with a brake short-circuit circuit of the wiper motor (M), the additional push button switch (TS) also controls this circuit in the same way as the wiper switch. 45