DE1655101C - Steering column switch for indicating the direction of travel for vehicles, in particular for motor vehicles - Google Patents

Description

The invention relates to a steering column switch for indicating the direction of travel for vehicles, in particular for motor vehicles, the r ^ us one over a LenksK-ckhebe! adjustable and on the switch housing supported switching part, the one spring-loaded Control cam controls which protrudes into the path of movement of a driver on the steering column and through it is automatically resettable in the middle position. and a contact controllable by the switching part

ϊο arrangement exists.

There are steering column switches of this type with automatic return of the steering column lever and steering Stick switch in the middle position known, in which the reset mechanism is particularly important

a ₅ through a large number of individual parts such as pawls. Feathers. Lever etc. is formed. In order to ensure a perfect and reliable function of the steering column switch, these parts must be manufactured with very tight manufacturing tolerances

Since the parts are very small, this has the additional disadvantage of difficult assembly in the switch connected. In addition, there is a relatively large number of connection and bearing points these items wear out quickly, which increases the reliability of the steering column switch restricted and the service life is very limited.

It is the object of the invention to provide the me-

To simplify the mechanical structure so that the number of Individual parts of the switch is greatly reduced, these parts are easy to manufacture and in addition simplify the assembly of the switch.

This is achieved according to the invention in that the switching part is an integral component made of elastic Plastic is made and two aligned opposite bearing journals for pivot bearing, a mount / ur attachment of the pitman arm, a control cam to control the switch cam, a receptacle for latching means for supporting the switching part on the switching cam of a latching part, elastic Reset elements as stops for the two switching positions of the switching cam and recess

gen for defining contact bridges for a contact plate used as part of the switch housing the contact arrangement, and that the switching part and the latching part in this Kontaktpiatte and a cover plate are set.

Due to this special design of the switching part, the switch can be significantly simplified without that a restriction of the switching functions would have to be accepted. The assembly of the switch is therefore due to the use of the contact plate as a housing part and bearing part for this switching part and the locking part are greatly simplified.

Another advantageous switching function can be introduced that the pitman arm in the

655

Recording of the shifting member around a bearing axis perpendicular to its pivoting plane for the ride Rich ^ _lun display is mounted adjustably. that the schaiterseitige end of Len '.., cockhebels Au - n line for a catch spring and eist a detent ball to _w. that the locking ball is supported on a control cam of the switching part, the aass perpendicular to the ■ '»■, ■■. enkeben-J deflectable steering column lift over the iteder. the locking ball and the control cam self-formed control cam 25 * [f

Pale feather characters g

de e ends under pretension in each spring suspension 28 on the Rasiieil ^ Sg d 29 d 30 are ""

.! leather, aie Kasiivugei unu uie sieuerKurve scium- ι uu ........-- ^ an acute wink

, can be reset to the initial position and that 10 The tension springs -9 unu_ ju sη ^ a _nc , _eor dnet. so

The train to the longitudinal axis of the ^ j ^ _{chtdargestcllu}

Len »corresponding contour of the control curve

is movable. . . ■ _f αϊ _for

In the switching part 15 are ferne.-a Verti, fungus 3 to

Steering column lever operated in the vertical ■ c -in additional contact. This z \ i- \\ chc contact can e.g. B. as a flasher contact .. be ended. The contact at this Konw is improved by the fact that the additional 15 K. 'act comprises a contact spring which is attached to the; Lenioiockhebel rests and when it is vertically deflected it comes into contact with a mating contact fixed on the contact plate. In addition, it is more advantageous for this purpose that the contact spring and the mating contact terminate in upright contact bodies running at the same angle

. m to keep the switch dimensions small, to the purpose to, st - the le · in a further embodiment provides that as displaceable above the Ltnkstockneoeis _the switching cams on the switching part AiBsparung-Wxerwhu ^ _khebels

and is rotatably mounted. In this way the inner tnae _, _fJ

üb: r the shah part to be controlled switching cams equal in ier correct assignment and the switching part determined?

/ jr Simplification of assembly is still provided.

This means that the cover plate is connected to the contact plate via one-piece fastening elements, for example latching elements, spring tabs or JgL. By means of the contact plate and the cover plate, all switch parts are held in place in their associated installation position without additional fastening. . -I ■.

The invention is described with reference to an embodiment shown in the /.eicnnung . _{with a}

_know

same

I got in touch with contacts ₄₆ in the

_in

To operate? '" ^Cs
sp.elswe.se

. 1 ucu steering column switch in ^ ₁ ... _tJ .,,

ti _B. 2 the steering column switch in plan view with the cover cap cut open,

F i g. 3 shows a steering column switch according to FIG. 2 in final position,

F i g. 4 the steering column switch according to FIG. 1 in the Sennin according to line III-III in FIG. 1 and

F i g. 5 the steering column switch according to FIG. 1 in section along the line IV-IV in F i g. 1.

As can be seen from the drawing, form an insulating plate 11 and a U-shaped cover cap the switch housing. In two aligned opposite holes 13 and 14 of the cap 12 or the insulating plate 11, a switching part 15 is rotatably mounted. Between the cover cap and a latching part 16 is held on the insulating plate U by means of rivet bolts 17.

Are provided on the switching part 15 and two bearing pins 19 integrally formed, which _is interrupted in the bores 13 and _{t on} the waste ₄₇ "which

bels 38 results when you press the optical Horn has the advantage that the contact spring connects directly to the pitman arm without the interposition of Isolating parts can be operated. A limitation of the switching stroke results from the support of the Contact spring 47 on the insulating part 11.

^{1: J} - - '"'1""I l irhthuoe

Beidi "eu app _bende section 481 of the

bent ^ stw «d 8 _{reaches that} ^

JjJgJ ^ SgJ «^ _{of parts4} 8 and SO. so at

Closing the flasher circuit. the parts close aes ^ ₁ . _{bcwegetli so daP e} , ne

^un J ^ ^l _e ^cn _Ko ^g _{n fact cleaning} occurs and thus always

^: s £ ÄSSii

tt SS, t Ko ", u,

Nem projection 24 slides along this and in the path of an attached to the steering column Driver 52 pushes.

When entering a curve or when turning the steering wheel accordingly, it gives up until then Driver 52 holding back the switching cam 22 releases the switching cam so that it enters the path of movement of the driver 52. When the steering wheel is turned back to drive straight ahead, the runs Driver 52 against the switching cam 22, so that it pushes the switching part 15 and thus the pitman arm 38 back into its central position by rotating one of its narrow surfaces with which it rests on the restoring member 20, FIG the locking ball 32 is again supported in the central locking recess of the locking part 16.

Should for some reason the steering column

lever 38 are held in a switched-on position, so pushes in when you turn the steering wheel back the straight travel of the driver 52 against the switching cam 22 and the narrow surface of the switching

s cam 22 against the restoring member 20, which is now so springs back far without the narrow surface sliding off the restoring member 20 until the driver 52 can move under the switching cam 22. In this way a destruction of the steering

o Stick switches are definitely avoided.

Tests have shown that the Schaller according to the invention even after a high number of Circuits, for example 250,000 circuits, are still in perfect condition! lj and shows hardly any signs of wear, so that with certainty a perfect operation of the steering column shadow is guaranteed with a long service life.

1 sheet of drawings

Claims (6)

Patent Claims: 1. Steering column switch to indicate the direction of travel for vehicles, in particular for motor vehicles, consisting of a steering column lever adjustable and on the switch housing supported switching part, the one spring-loaded Control cam controls which protrudes into the path of movement of a driver on the steering column and is automatically resettable by this in the middle position. and one through the switching part controllable contact arrangement, characterized in that that the switching part (15) is made as a one-piece component made of elastic plastic and two aligned opposite one another Bearing pin (13, 14) for pivot mounting, a receptacle (37, 40) for fastening the Steering column lifts (38), a control cam (25) for controlling the switch cam (22), a receptacle (31) for locking means (32, 33) for supporting the switching part (15) on the switching cam of a Locking part (16), elastic return elements (20, 21) as stops for the two switching positions of the switching cam (22) and recesses (34) for Definition of contact bridges (36) for a contact plate used as part of the switch housing (11) of the contact arrangement, and that the shell part (15) and the latching part (16) in this Kontaktpiatte (11) and a cover plate (12) are specified. 2. steering column switch .nach claim 1, characterized in that the steering column lever (38) in the receptacle (37) of the switching part (15) about a bearing axis (39) perpendicular to its pivot plane is mounted adjustable for the direction of travel that the switch-side end of the pitman arm (38) has a receptacle (41) for a detent spring (42) and a detent ball (43), that the locking ball (43) is supported on a control cam (44) of the switching part (15) that the perpendicular to the pivot plane deflectable pitman arm (38) via the detent spring (42), the The locking ball (43) and the control cam (44) can be automatically reset to the starting position and that the pitman arm (38) has an additional contact (47, 49) actuated. 3. Steering column switch according to claim 2, characterized in that the additional contact comprises a contact spring (47) which rests against the pitman arm (38) and is more vertical when it is Deflection with a mating contact (49) fixed on the contact plate (11) in Connection is coming. 4. Steering column switch according to claim 3, characterized in that the contact spring (47) and the mating contact (49) in inclined contact bodies running at the same angle (48, 50) run out. 5. Steering column switch according to one of the preceding claims, characterized in that the switching cam (22) is slidably and rotatably mounted on the switching part (15). 6. Steering column switch according to one of the preceding claims, characterized in that the cover plate (12) via one-piece fastening elements, e.g. B. locking elements, spring tabs or the like, connected to the contact plate (Ii) is.