DE19853818A1 - Window switch - Google Patents

Abstract

A window lifter switch (1) for a motor vehicle comprises an actuating element (2) which is pivotally mounted in a housing (6) and which actuates switching contacts (57) via an assigned sliding switching element (35), to which connecting contacts (53) are assigned. The actuating element (2) is assigned a two-stage pivoting movement (19) in the pressure direction for the downward movement of the window and in the pulling direction for the upward movement of the window, the actuating element (2) deflecting means (38, 78) for a linear reciprocating movement of the Sliding switching element (35) is actuated, which actuates two switching contacts (57) of a switching mat (49) one after the other in each direction.

Description

The invention relates to a window switch for a motor vehicle with a pivotable in a housing mounted actuator that has an associated Sliding switching element actuated switching contacts, the connection contacts are assigned.

DE 44 31 061 A1 is a lift and slide switch, in particular special for the lifting sunroof of a motor vehicle, be knows. The housing has contacts with a in the neutral position swiveling or sliding actuator provided button, on which a lever is attached, the one Sliding switching element acted upon. Is pivotable on Sliding switching element mounted a rotary switching element in which the Lever of the operating button engages movably. The two Switching elements go automatically through a reset device in their starting position and adjust it with them bound button back to its original position. The Reset device is befe by a rotary switching element Rigid, spring-loaded pressure sleeve carrying guide tube and into the housing by two molded on a base protruding as well as deepened pyramids Projections formed. Under the action of a compression spring who the pressure sleeves outwards against the recessed back  pyramids pressed in the protrusions, causing after lot leave the actuating button the reset device and so that the switching elements also take their zero position. By swiveling or moving the actuation button to the rotary and / or slide switching element Orderly contact spring areas to rest on one in the base recessed lead frame brought. The contact spring areas are dimensioned so that a larger number of current paths can be realized. With the lift and slide switch should different motors can be controlled, both a Have right and left rotation.

Furthermore, a rocker switch is known from DE 1 95 37 296 A1 known device for a two-stage actuation stroke, the part of an actuator for electrical windows over a motor vehicle, which is a pair of actuator plates has a rocker button below a longitudinal center line. The actuation plates are by means of an elastic connection arms coupled and thus form an actuator. Every bet plate presses two pressure switches, which are activated by a Switching mat with hollow projections located therein Chen, arranged contact pieces and through a base plate with the fixed cones assigned to the movable contact pieces beats are formed. When the rocker button is pressed pivots this around the stub axle of a housing, so that the actuated side of the rocker button moves down. This downward movement is over the assigned Actuating plate on the right and below left hollow protrusions of the safety mat. The before Jumps are arranged so that due to differ Torque acting first, the left projection deformed and by touching the cones arranged here beats a circuit is closed. After further Ab  If the rocker button is pressed down, the right projection also becomes pressed down by the operating plate and a white tere circuit closed. By releasing the rocker switch the same is reset and the closed ones Circuits are broken. The assignment of a seesaw Switching device for the control of electrical windows There is a risk of unintentional activity. Here is especially closing the window by accident Pressing the rocker switch disadvantageously, as this may result in ver of a person who, for example, deals with a Hand or head in the closing area of the window det, can arise.

It is therefore an object of the invention to provide an electrical scarf ter, in particular window switch for a motor vehicle, to create the kind of an unintended closing the window excludes a tactile detection enable the switch actuation and by a compact design with the lowest possible number of components with a reliable function.

According to the invention the object is achieved in that the loading actuating element in the pressure direction for the downward movement of the Window and in the direction of pull for the upward movement of the window sters each assigned a two-stage swivel movement is, the actuating element deflecting means for a li linear reciprocation of the slide switching element strikes that two switch cones in each direction clock of a safety mat actuated.

These measures prevent accidental closing of the window prevented because the actuation of the actuations lementes in the direction of pull is only carried out very consciously. Of  the successive Beaufschla tation of two switch contacts of a switch mat a tactile Er grasp the switch operation. Possible variations with regard to the detectability of the switch actuation result from a corresponding design of the me chanic resistance of the safety mat, which by its Fe stability and constructive design is determined. The Actuation of deflection means for the linear movement of the Switching element by the actuating element enables one compact design of the window switch.

According to an advantageous embodiment of the invention the deflection means the free, T-shaped end of a Web of the actuator and a the free end of the Web-receiving opening of the sliding switching element. Thereby are not additional components that have a corresponding order steering the pivoting movement of the actuating element in a enable linear movement of the slide switching element, not agile.

According to an alternative embodiment of the invention the deflection means a pivotally mounted in the housing, two-armed bell crank, one arm with a T-shaped trained end in an opening of the sliding switching element engages and its other arm with horizontally opposite Ging is provided by a pin on the actuation element molded forks are overlapped. The usage of the bell crank enables a variation of the pivoting movement supply of the actuator, the essential structure of the power window switch is retained. It is for the basic components in a large possible for the manufacturer Number to produce and individual parts to be assembled to adapt to specific requirements.  

Preferably, the bell crank has two horizontally opposite on bearing journals, which in corresponding openings of the Intervene. Because both the bell crank and that Housing made of plastic by injection molding is the stock and without special manufacturing or assembly effort feasible.

The bell crank transmits during the swiveling movement of the Be Actuation element forces on the slide switching element and must have sufficient stability for this. thats why expediently the bell crank in the area of the bearing journal executed thickened in cross section, and the actuators lement associated arm of the bell crank is with reinforcement ribs.

To support the power transmission during wasting Kung the actuator is preferably the Betä Arm facing the deflection lever on the end face provided a recess at the bottom of a resilient tongue is formed, the end of the actuator is held without play. The play-free bracket of the trains the actuator also causes a positive Schaltge feel because the actuator at this point is not empty traveled away. The resilience of the tongue is under whose depth is inserted into the arm of the bell crank leave recess adjustable and by means of relatively simple Tool adjustments can be changed.

This is preferably the T-shaped end of the web or the Deflecting lever in cross section circular or semicircular and at a widened end of the slide switching element  ordered opening rectangular. So that's it given necessary freedom of movement.

On the one hand an easy joining of the web or the um steering lever and the opening of the sliding switching element light and on the other hand the sliding out of the web or the Deflecting lever from the opening of the sliding switching element in egg ner of the end positions of the slide switching element is prevented, are preferably depending on the long sides of the opening on the outside because two opposite reinforcing ribs are arranged, that protrude slightly into the opening and between them pick up the T-shaped end of the web or the bellcrank men.

Expediently on the long sides of the opening are outside arranged on the side two opposite spring arms, the under Preload at the T-shaped end of the web or the um steering lever. This will actuate the web lementes or the bell crank play freely in the opening of the Sliding switching element mounted and the tactile switching sensation positively influenced because there is no unnecessary free travel when wasted ken of the actuator must be overcome.

After a further development of the inventive idea that is Sliding switching element is essentially plate-shaped and horizontally longitudinally between fixed guide bars slidably mounted. Furthermore, the slide switching element has reinforcement ribs on its top. Furthermore, that is Sliding switching element with its underside on a connector on two safety mats, and the top of the Sliding switching element are clip lugs with stationary clip arms Matched game. Through this execution of storage dispense with the use of additional individual parts. Lead  Bridge and clip arms are part of a base and are produced together with this in an injection molding process poses. Due to the almost punctiform edition of the Sliding switching element on the connecting bracket and its loading limit upwards by the clip noses of the clip arms and the reinforcing ribs supported on the housing are the Frictional losses in the longitudinal displacement of the slide switch link minimized. Furthermore, the assembly of the slide switching element can be realized by simply clipping on. The Reinforcing ribs of the slide switching element act Deflection of the same.

The slide switching element is expediently on its un offset with two off-center of its longitudinal axis and mutually spaced actuation approaches, each on the switch contacts of the associated Schaltmat act. The sliding switching element with the molded Be approaches are manufactured in one operation and are thus inexpensive to manufacture.

Each switching mat preferably comprises two switching contacts in side by side and spaced domes, the dome being in its upper part by a common one Actuating plate are covered. Because of this arrangement needs the slide switching element for the actuation of everyone Safety mat only one actuation approach, since this over the Actuating plate acts off-center on the switch contacts and depending on the path, one of the switch contacts first and then both switch contacts by pressing down the dome actuated. The domes are relatively close together of what makes the switch narrow, and so are designed that the tactile detection of switching on kinking the dome is guaranteed by its operation.  

For a short length of the switch and a small Mon to achieve daily effort, are the switch contacts arranges connection contacts in a perpendicular to the longitudinal axis se of the sliding switching rib of a base of the housing. Furthermore, there is one Switch mat with two horizontally arranged switch contacts arranged on one side of the rib of the base. The inlet sen of the contacts is conveniently done by order inject.

So that the connection contacts outside the base before dam are protected and errors when connecting the switch are avoided, the connection contacts of one as Plug-in encoding surrounding connection collar.

To complete the installation opening of the switch in the motor vehicle dig cover and an ergonomic switch actuation enable is the top of the case through a bezel covered with a recessed recess into which the actuator ment intervenes. The cover can be removed using a detachable connection elements assigned to the housing or molded onto the housing become. The trough is arranged so that the actuating element ment of the switch can be easily accessed to put it in To pull direction. Furthermore, for simplified Monta ge of the switch in the motor vehicle on the front and the A retaining spring is arranged on the rear of the housing. The retaining springs engage behind the top edge of an installation opening and ensure that the switch is securely seated.

It is understood that the above and next Features to be explained not only in the respective specified combination, but also in other combinations  are usable without the scope of the present inventions to leave.

The invention is illustrated below with the aid of an embodiment game nä with reference to the accompanying drawings ago explained. Show it:

Fig. 1 approximately form a perspective view of the inventive SEN window switch in a first exporting,

Fig. 2 is a sectional view according to section line II-II of Fig. 1 of the power window switch,

Fig. 3 is a sectional view according to section line III-III of Fig. 2,

Fig. 4 is a sectional view according to section IV-IV of Fig. 2,

Fig. 5 is a sectional view according to section line VV of Fig. 4,

Fig. 6 is a sectional view of a switching mat,

Figure 7 is a perspective view of the inventive SEN window switch guide die. In an alternative off,

Fig. 8 is a sectional view according to section line VIII-VIII of Fig. 7,

Fig. 9 is a sectional view according to section line IX-IX of Fig. 8,

Fig. 10 is a representation along section line XX of Fig. 8 and

Fig. 11 is a sectional view according to section line XI-XI of Fig. 8.

In a first embodiment, the electric window switch 1 has an actuating element 2 in the upper region, the upper edge 3 of which protrudes beyond a panel 4 and which engages in a recess 5 recessed in the panel 4 . The actuating element 2 is designed such that it can be reached behind by reaching into the trough 5 . The upper edge of the panel 4 protrudes on all sides via a housing 6 and covers an installation opening, not shown, in a motor vehicle, which is dimensioned slightly larger than the housing 6 . The connection of housing 6 and panel 4 he follows by means of clip connections 7th To realize this clip connections 7 is in the region of the front 8 of the housing 6 on a molded on the housing 6 , protruding collar 9, a clip nose 10 , which is gripped by the lower edge of the panel 4 . Furthermore, in the area of the rear side 11 of the housing 6 there are two spaced-apart clip arms 12 which engage in corresponding Klipsöff openings 13 of the aperture 4 . The collar 9 has on its side surfaces 14 in the upper region each a clip nose 15 , the openings with lateral, circular Klipsöff 16 of the actuating element 2 form clip connections 17 . The clip connections 17 simultaneously represent an axis of rotation 18 about which the actuating element 2 executes a pivoting movement 19 .

On the front 8 and back 11 of the housing 6 , a retaining spring 20 is arranged in the center, which is U-shaped in the lower region so that it engages around the lower edge of the housing 6 . The retaining springs 20 are fixed by means of clip connections 21 , the housing 6 on the front 8 and rear 11 each having a clip nose 22 which engages in a corresponding clip opening 23 of the retaining spring 14 . The retaining springs 20 are used to attach the Fen lifter switch 1 in a mounting opening, not shown, of a motor vehicle. The housing 6 is assigned a base 24 , on the upper side of which an insertable into the housing 6 and in the region of the front 8 and rear 11 is formed by breaks 25 having collars 26 . The breakthrough surface 25 serve as frankings for the orderly in this area of retaining springs 20th A connection collar 27 is arranged on the underside of the base 24 . Lateral Klipsverbin 28 allow the base 24 to be attached to the housing 6 . To implement the clip connections 28 , the collar 26 of the base 24 has two spaced-apart clip lugs 29 on each longitudinal side, which engage in assigned clip openings 30 in the housing 6 .

The actuating element 2 has on its rounded upper side symbols 31 , which can be backlit by light-emitting elements, not shown. A downwardly tapering web 32 is integrally formed on the underside of the actuating element 2 and in alignment with the circular clip openings 16 . The width of the web 32 is made constant except for its free end 33 . The free end 33 of the web 32 is T-shaped, with the opposite legs having a circular or semicircular cross section, and engages in a rectangular opening 34 of a sliding switching element 35 arranged in the housing 6 . On the long sides of the opening 34 , two opposite reinforcing ribs 36 are arranged, which protrude slightly into the opening 34 and receive the T-shaped end 33 of the web 32 between them . In order to equalize the existing play between the reinforcing ribs 36 and the T-shaped end 33 of the web 32 , a spring arm 37 is attached to each longitudinal side of the opening 34 between the reinforcing ribs 36 , the un ter bias at the T-shaped end 33 of the Web 32 lies on. The free end 33 of the web 32 and the opening 34 of the slide switching member 35 form in this embodiment order steering means 38th

The sliding switching element 35 is essentially plate-shaped with a constant thickness and has a widening 39 in the region of the opening 34 . All long sides 40 of the slide switching element 35 are designed parallel to one another. The sliding switching element 35 is guided horizontally between stationary guide webs 41 of the base 24 , each of which is opposite in pairs. In the area in which the guide webs 41 lie on one of the long sides of the sliding switching element 35 , their end faces are provided with a radius 42 . The vertical limitation of the slide switching element 35 is carried out by stationary, pairwise in opposite lying clip arms 43 of the base 24 , the clip lugs 44 of which are assigned to the top of the slide switching element 35 with play. If the top of the sliding switching element with reinforcing ribs 45 is provided, the clip lugs overlap the sliding switching element 35 in edge regions which are free of reinforcing ribs 45 . Accordingly, the horizontal mobility of the sliding switching member 35 is ensured to the extent necessary. The underside of the sliding switching element 35 has two actuating lugs 46 which are arranged off-center to the longitudinal axis 47 of the sliding switching element 35 and are spaced apart on the opposite side. The vertical limit of the sliding switching member 35 down is realized on the one hand by a flexible connecting bracket 48 two switching mats 49 and on the other by paragraphs 50 in the upper region of the guide webs 41 , whereby a vertical play compensation can be effected.

The two switching mats 49 coupled by the connecting bracket 48 are arranged opposite one another. Between the switching mats 49 there is a molded on the base 24 and aligned at right angles to the longitudinal axis of the sliding switching member 35 rib 51 into which a lead frame 52 is injected. The contacts 53 of the lead frame 52 ra gene in the connecting collar 27 of the base 24th A web 54 is arranged in the center on each side of the rib 51 and engages in an elongated hole-shaped opening 55 of the associated switching mat 49 and thus fixes it. Each switching mat 49 has two adjacent and spaced apart domes 56 , each dom 56 receiving a switching contact 57 . The two domes 56 of each safety mat 49 are covered in their upper region by a common actuating plate 58 . The two safety mats 49 with associated actuation plates 58 are located between the actuating sets 46 of the sliding switching element 35 at right angles to its longitudinal axis 47 . Each actuating projection 46 is provided in its contact area with the actuating plate 58 with a V-shaped tip 59 .

When pivoting the actuating element 2 of the window switch switch 1 from the zero position 60 in the printing direction into a switching position of the first stage 61 , the web 32 is pivoted to the left about the axis of rotation 18 . The engage in the opening 34 of the slide switching member 35 de and held by the reinforcing ribs 36 and by the spring arms 37 T-shaped end 33 of the web 32 transmits this left-hand movement to the sliding circuit member 35th By the aforementioned deflecting means 38 , the rotational movement of the web 32 is converted into a translatori cal, the direction of movement of the web 32 following movement of the slide switching member 35 . The right actuation approach 46 begins to act on the actuating plate 58 of the right th switching mat 49 . Due to the arrangement of the actuating approach 46 outside the longitudinal axis 47 of the slide control member 35 and the resulting Rebelver ratios, acts on the dome 56 near the actuating approach 46, the greatest torque, so that it buckles and the associated switch contact 57 a circuit on the Lead frame 52 closes. The construction of the dome 56 buckling enables tactile detection of the switch position by means of corresponding constructive measures. In this switching position, first stage 61 , a window motor, not shown, is driven in such a way that a motor vehicle window, not shown, moves slowly downward. When the actuating element 2 is released , the dome 56 jumps back into its starting position. The circuit is opened and the motor vehicle window remains in the position reached. Due to the restoring effect of the dome 56 , both the sliding switching element 35 and the actuating element 2 are reset to the zero position 60 . If the pivoting of the actuating element 2 of the switch 1 takes place from the zero position 60 in the pressure direction into a switching position of the second stage 62 , the movement sequences already explained follow. The right actuating projection 46 begins to act on the actuating plate 58 of the right safety mat 49 and first causes the dome 56 closest to it to buckle due to the acting torques. The assigned switch contact 57 closes a circuit on the lead frame 52nd Since the switching position of the second stage 62 has a greater left movement of the sliding switching element 35 as a result of the switching position of the first stage 61 , after the closing of the first circuit, the second, in larger ab to the actuating approach 46 arranged second dome 56 begins to buckle. The switch contact 57 assigned to it closes a further circuit on the lead frame 52 . The switching process of the second dome 56 is also tactile. The window lift motor controlled in this way quickly moves the motor vehicle window down to its end position. The return position of the actuating element 2 takes place after Loslas sen the same due to the forces of the recessed domes 56th

In order to move the motor vehicle window upwards, the pivoting movement 19 of the actuating element 2 takes place in the direction of the train, specifically in switching positions 63 and / or second stage 64 . The movements for actuating the right safety mat 49 are equivalent to those already described, but in the opposite direction.

In an alternative embodiment of the window regulator scarf ters 1 the operating member 2 is such inserted in the cavity 5 of the aperture 4 that the upper edge 3 does not protrude above the visor. 4 Below the axis of rotation 18 , the clip connections 17 , about which the actuating element 2 executes the pivoting movement 19 , are provided with a circumferential seal 65 which bears against the cover and prevents contamination of the inside of the switch.

On the actuating element 2 , two opposite and spaced apart forks 66 are formed, which serve for overlapping horizontal pin 67 of a pivotally mounted lever 68 in the housing 6 . To facilitate the Mon days 66 chamfers 69 are provided for the pin 67 at the free ends of the forks.

The bell crank 68 is designed with two arms, one arm 70 is provided with the pin 67 and another arm 71 has a T-shaped end 72 which is circular or semicircular in cross section and engages in the opening 34 of the sliding switching member 35 . The Schwenkbe movement of the bell crank 68 by means of two horizontally opposite bearing pins 73 which engage in corresponding openings 79 of the collar 9 of the housing 6 . In the area of the trunnion 73 , the bell crank 68 is thickened in cross section. The arm 70 of the deflection lever 68 , which carries the pin 67 and faces the actuating element 2, is provided on the end face with a recess 74 which divides the arm 70 . A resilient tongue 75 is formed on the bottom of the recess 74 and is held at the end by the actuating element 2 without play. For this purpose, the actuating element 2 has correspondingly shaped projections 76 . To stiffen the arm 70 , opposite reinforcement ribs 77 are provided in each case.

The deflection means 78 are formed in this alternative embodiment from the deflection lever 68 and the opening 34 of the sliding switching member 35 .

During the pivoting movement 19 of the actuating element 2 of the window switch 1 from the zero position 60 in the pressure direction to a switching position of the first stage 61 , the T-shaped end 72 of the bell crank 68 performs a rightward pivoting movement against the spring action of the tongue 75 , the sliding switching element 35 follows. The shaping of the rotatory movement of the deflection lever 68 into a translatory movement of the sliding switching element is carried out by means of the deflecting means 78 . The left actuation projection 46 begins to act on the actuation plate 58 of the left switch mat 49 . As already explained, a circuit on the lead frame 52 is closed by the associated switching contact 57 in the buckling dome 56 , wherein the design of the dome 56 enables tactile detection of the switching position. A motor vehicle window is slowly opened due to the corresponding assignment of the connection contacts 53 . When releasing the actuating element 2 , the dome 56 jumps back into its starting position. The circuit is opened and the motor vehicle window remains in the position reached. Due to the restoring effect of the dome 56 and the supporting action of the pretensioned tongue 75 , both the sliding switching element 35 and the actuating element 2 are brought into the zero position 60 . In the switch position two ter stage 62 in the pressure direction, another circuit, as described above, is closed on the lead frame 52 and the motor vehicle window opens quickly until it reaches its end position.

To close the motor vehicle window, the actuating element 2 is pivoted in the pulling direction, in the switching positions of first 63 and / or second stage 64 . The subsequent movements for actuating the left switch mat 49 are equivalent to those already described, but of course in the opposite direction.

Reference list

1

Window switch

2nd

Actuator

3rd

Top edge

4th

cover

5

trough

6

casing

7

Clip connection

8th

front

9

collar

10th

Clip nose

11

back

12th

Low clip

13

Clip opening

14

Side surface

15

Clip nose

16

Clip opening

17th

Clip connection

18th

Axis of rotation

19th

Swivel motion

20th

Retaining spring

21

Clip connection

22

Clip nose

23

Clip opening

24th

base

25th

breakthrough

26

collar

27

Connecting collar

28

Clip connection

29

Clip nose

30th

Clip opening

31

symbol

32

web

33

free end

34

opening

35

Sliding switching element

36

Reinforcement rib

37

Spring arm

38

Deflecting means

39

Broadening

40

Long side

41

Boardwalk

42

radius

43

Low clip

44

Clip nose

45

Reinforcement rib

46

Actuation approach

47

Longitudinal axis

48

Connecting bracket

49

Safety mat

50

paragraph

51

rib

52

Lead frame

53

Connection contact

54

web

55

opening

56

Cathedral

57

Switch contact

58

Flush plate

59

V-shaped tip

60

Zero position

61

first stage

62

second step

63

first stage

64

second step

65

poetry

66

fork

67

Cones

68

Bell crank

69

Bevel

70

poor

71

poor

72

T-shaped end

73

Bearing journal

74

Recess

75

tongue

76

Molding

77

Reinforcement rib

78

Deflecting means

79

opening

Claims (19)

1. Window switch ( 1 ) for a motor vehicle with a pivotably mounted in a housing ( 6 ) Actuate supply element ( 2 ), the switching element ( 35 ) actuates switching contacts ( 57 ), which are connected to circuit contacts ( 53 ), thereby indicates that the actuating element ( 2 ) in the pressure direction for the downward movement of the window and in the pulling direction for the upward movement of the window is assigned a two-stage pivoting movement ( 19 ), the actuating element ( 2 ) deflecting means ( 38 , 78 ) for a linear Back and forth movement of the sliding switching element ( 35 ), which actuates two switching contacts ( 57 ) of a switching mat ( 49 ) one after the other in each direction. 2. Window switch according to claim 1, characterized in that the deflecting means ( 38 ) the free, T-shaped end ( 33 ) of a web ( 32 ) of the actuating element ( 2 ) and a free end ( 33 ) of the web ( 32 ) include receiving opening ( 34 ) of the slide switching element ( 35 ). 3. Window switch according to claim 1, characterized in that the deflecting means ( 78 ) egg nen in the housing ( 6 ) pivotally mounted, two-arm deflection lever ( 68 ) comprise, one arm ( 71 ) with a T-shaped end ( 72 ) engages in an opening ( 34 ) of the sliding switching member ( 35 ) and the other arm ( 70 ) with horizontally opposite Zap fen ( 67 ) is provided, which are overlapped by an actuating element ( 2 ) molded fork ( 66 ). 4. Window switch according to claim 3, characterized in that the deflection lever ( 68 ) has two horizontally opposite bearing pins ( 73 ) which engage in corresponding openings ( 79 ) of the housing ( 6 ). 5. Window switch according to claim 4, characterized in that the bell crank ( 68 ) in the region of the bearing pin ( 73 ) is thickened in cross section, and the actuating element ( 2 ) associated arm ( 70 ) of the bell crank ( 68 ) with reinforcing ribs ( 77 ) is provided. 6. Window switch according to one of claims 3 to 5, characterized in that the actuating element ( 2 ) facing arm ( 70 ) of the bell crank ( 68 ) is provided on the end face with a recess ( 74 ) on the bottom of which a resilient tongue ( 75 ) is formed, which is held at the end by the actuating element ( 2 ) without play. 7. window switch according to claims 2 and 3, characterized in that the T-shaped end ( 33 ) of the web ( 32 ) or the bell crank ( 68 ) in cross section circular or semi-circular and that at a widened end ( 39 ) of Sliding switching element ( 35 ) arranged opening ( 34 ) is rectangular. 8. Window switch according to one of claims 2, 3 and 7, characterized in that on the long sides of the opening ( 34 ) on the outside two opposite reinforcing ribs ( 36 ) are arranged, which protrude slightly into the opening ( 34 ) and between them the T -shaped end ( 33 ) of the web ( 32 ) or the bell crank ( 68 ). 9. Window switch according to one of claims 2 to 8, characterized in that on the long sides of the opening ( 34 ) on the outside two opposite spring arms ( 37 ) are arranged, which are under tension on the T-shaped end ( 33 ) of the web ( 32 ) or the reversing lever ( 68 ). 10. Window switch according to one of claims 1 to 9, characterized in that the sliding switching member ( 35 ) is substantially plate-shaped ausgebil det and between stationary guide webs ( 40 ) horizon tal is mounted longitudinally. 11. Window switch according to one of claims 1 to 10, characterized in that the sliding switching element ( 35 ) on its top reinforcing ribs ( 45 ). 12. Window switch according to one of claims 1 to 11, characterized in that the sliding switching element ( 35 ) with its underside on a connec tion bracket ( 48 ) of two switching mats ( 49 ) rests, and the top of the sliding switching element ( 35 ) clip lugs ( 44 ) stationary clip arms ( 43 ) are associated with play. 13. Window switch according to one of claims 1 to 12, characterized in that the sliding switching element ( 35 ) on its underside with two off center of its longitudinal axis ( 47 ) offset and mutually spaced actuating approaches ( 46 ) is provided, each on the switching contacts ( 57 ) of the associated switch mat ( 49 ). 14. Window switch according to one of claims 1 to 13, characterized in that each switching mat ( 49 ) has two switching contacts ( 57 ) in adjacent and spaced domes ( 56 ) around, the domes ( 56 ) in their upper region of a common actuating plate ( 58 ) are covered. 15. Window switch according to one of claims 1 to 14, characterized in that the switching contacts ( 57 ) associated connection contacts ( 53 ) in a perpendicular to the longitudinal axis ( 47 ) of the sliding switching element ( 35 ) extending rib ( 51 ) of a base ( 24 ) of the housing ( 6 ) are embedded. 16. Window switch according to claim 15, characterized in that a switching mat ( 49 ) with two horizontally arranged switching contacts ( 57 ) on one side of the rib ( 51 ) of the base ( 24 ) is arranged. 17. Window switch according to one of claims 1 to 16, characterized in that the on contacts ( 53 ) are surrounded by a plug-in coding led out collar ( 27 ). 18. Window switch according to one of claims 1 to 17, characterized in that the upper part of the housing te ( 6 ) is covered by an aperture ( 4 ) with a recessed recess ( 5 ) into which the actuating element ( 2 ) engages. 19. Window switch according to one of claims 1 to 18, characterized in that on the front der- ( 8 ) and the back ( 11 ) of the housing ( 6 ) each have a retaining spring ( 20 ) is arranged.