DE2012209A1 - Ignition switch for road vehicles - Google Patents

Description

Ignition switch for road vehicles

The invention relates to an ignition switch for road vehicles® with a housing and one for rotation within the housing a first stable position to a second stable position and from the second stable position to a third unibable position stored rotor, with the Rotpr from the third unstable position is sprung back into the second stable stable.

The invention is characterized by an arcuate curved path on the inner surface of the housing with surfaces which extend radially to the housing in planes "essentially at right angles to the axis of rotation of the rotor" in a riagelgii © d rotatable with the rotor with a finger radial in attachment aa dio curve path © rstretched * and © in spring member acting on the bolt glisd; which pretensions the finger in abutment® against the curve path and for © in radial pressure

Wa / Se ■ ..., 2 «=

of the finger outwards with radial movement of the finger provides inside through the cam during the rotation of the rotor, such an arrangement of the finger and the cam provided is that the Hotor is prevented from moving from its second position to its third position, unless previously the The rotor has been moved from its first to its second position.

The invention is described in the following on the basis of exemplary embodiments explained in more detail with reference to the drawings. In the drawing c gen are ι

Pig. 1 shows a section through an ignition switch as a first embodiment of the invention,

Fig. 2 is a partially sectioned plan view of the switch of Fig. 1,

Fig. 3 is a detail in perspective view showing part of the housing of the Ζ'ϊ-λ " ¹ shown in Fig. 1 ■

Switch aeigt and

Fig. 4 is a detail in section showing part of the E: tors eLues ignition switch as a second off ™ shows an example of the invention.

The ignition switch shown in both examples is a key cetätrLg, -fei- ·: 'chal Be * .i <it has three switch stalls, namely a first ^e i _; . ans ce. ■■ ·. <· held division »in which the key from the switch nsraüeg *;,: ^ * :; ■■ - ■, -.- "den ktvan, a second Z and position.» in the dieZ - ir. <\ .; - ß v ..- ;: l ■ :: ". <: ■"":; f 3svrorai'Tö3 se des Ötz ^ ai / .enCahrasiiig «ge ~ echlosssn *« ■ '. ·? ::., ■ - "..: » -: -: * · ν driv.tö'. Starting position, In the you get through this, ά. " tit '- ^: · Γ :::.' Λί? .-- '· <Κ over pt ¹ di * .swsi te position is turned up and -": ■ dar d.%: c' iz.-ir :: ί · Γΐΐθ »- ^ ratioHikreis des 3straßenfahri, eugs va aätziioh 7 '; n S'.r.ν} -r <- ... l ^ ur t;:. t> Znr-.dxizig is disregarded.

909840/1333

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The switch shown in FIG. 1 has a cylindrical housing 11 on, in which a rotor 12 sits, the rotor by means of a hollow pin 12a, which is integrally formed on the rotor 12, for rotation is mounted within the housing 11. The hollow pin 12a is with the sleeve of a cylinder lock, the cylinder of which is formed by part of the housing 11, so that the rotor 12 is relatively

can be turned to the housing 11 with the aid of a key. One end of the housing is closed by a contact plate (not shown) on which a number of fixed contacts and associated connections are seated. The rotor 12 carries a bridge contact (not shown), which interacts with the fixed contacts on the contact plate to close electrical circuits between the connections in different angular positions of the rotor. In the lowest position of the rotor, the switched-off position of the holder, no circuits are closed; in the second position of the rotor, the ignition position of the switch, the circuits are closed to the connections that are assigned to the ignition circuit of the vehicle, and in this position the auxiliary circuits © of the vehicle are also closed, and in the third position of the rotor, the start position of the switch, the ignition circuit remains closed and a circuit is closed between the connections that are assigned to the starter motor circuit of the vehicle. The rotor and housing have cooperating locks (not shown) which serve to hold the rotor in its first or second position relative to the housing. The switch also has spring means (not shown) which are tensioned during the movement of the rotor from its second position to its third position and which when the rotor is released in the third position for returning the rotor from its third position to the second Position. For rotation with the rotor 12 is mounted in a Rigelglied dec form of an annular plate 13 which has a check radially outwardly extending, integrally formed fingers fourteenth That

00984071391

BATH ORIGINAL

The locking member 14 is mounted on the rotor 12 for rotation therewith, however, it can perform both an axial and a transverse movement relative to the rotor 12. A substantially U-shaped one Spring band 15 engages the locking member 13 by means of two one-piece Projections 15a »15b, which are formed on the ends of the band 15 are, the projection 15a sits in a complementary hole 16 in the Part 15 is seated adjacent to the pinger 14 'and the projection 15b in a radially extending slot 17 in part 13 which is remote from finger 14 so that the legs of the U-shaped band 15 extend on diametrically opposite sides of the zap & is 12a.

The housing 11 has an arcuate slot 18 in which the projection 15b of the spring band 15 is seated. The arc length of the slot 18 is sufficient to allow angular movement of the rotor 12 between the first and third positions. Furthermore, the housing 11 at the slot 18 has an integrally formed, angularly extending shoulder 19, the end of the locking member at the slot 17 between its first and second during the rotation of the rotor. its third position rests against the shoulder 19 so that the end of the locking member 13 is normally tilted towards the rotor. Further, the height of the shoulder 19 is provided so that the end of the band 15 is captured on the projection 15b between the rotor 12 and the end of the slot 17 which is remote from the pin 12a, so that movement of the finger 14 in a direction towards the tilting the end of the part 13 on the finger 14 towards · ■ i'jt the! red 12 provides a bending out of the spring band 15th The spring band 15 thus acts mainly in a direction parallel to the axis of rotation of the rotor for pressing the finger 14 away from the rotor 12. However, if the finger 14 is moved radially inward, since the projection 15b of the band 15 is seated in the arcuate slot 18, the radially extending slot 17 is moved relative to the projection.

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away in order to bend the band 15. So if the finger 14

is moved radially inward, the spring band 15 presses the finger radially outwards back to a position in which the spring band is relaxed.

The finger 14 of the locking member 13 extends radially in the direction of the inner wall of the housing 11 and engages a cam track 21 which is provided on the wall of the housing. The curved track 21 has a flat arcuate surface 22 which extends in a plane essentially parallel to the plane of the rotor 12. At one end of the surface 22, the curved path 21 has an elevation 23 which is raised in relation to the surface 22, a shoulder 24 being formed between the surface 22 and the surface of the elevation 23. A ramp 25 extends from the end of the surface 22 remote from the elevation 23 to a point on the elevation 23, the ramp 25 ending at a point above the elevation 23. The width of ramp 25 is substantially constant over the first portion of the lamp, and from this point the ramp merges into surface 22 to a point on shoulder 24. Between the point on the ramp at the shoulder 24 and the end 'dec ramp, the width of the ramp decreases until liull.

When the rotor is in its first position, the finger 14 of the locking member 13 rests on the surface 22 on the lower side of the ramp 25, and during the movement of the rotor 12 from its position to its second position, the finger 14 moves bm along the ramp surface 25. During the movement of the eotor 12 from its first position to its second position, the locking member becomes. 13 inclined in the direction of the rotor 12 _? -tui so that the ■ Pedar strap 15 is loaded & o Ws when the rotor is loaded in its second position, Bioh is located. the finger 14 at the point of the ramp surface © 25 ₉ at which the width of the ramp surface 25 starts to decrease »Sina

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009840/1333 - "

of the rotor 12 from its second position to its third position against the bias of the spring means, a movement of the finger 14 over the last part of the ramp surface 25 'and thereby the locking member 13 »since the width of the ramp surface 25 decreases, Moved laterally relative to the rotor 12 in order to bend the spring band 15 further. With the arrival of the rotor 12 in its third Position moves the finger 14 away from the end of the ramp surface 25 and is by the spring band 15 in contact with the top of the survey 23 printed.

When the rotor is released in the third position, the spring means press on the rotor 12 and rotate it back into its second position. The movement of the rotor to its second Stellimg leads back to a "movement of the finger 14 on the surface- of the elevation 23 along in the direction of the Schultex 24, and when the rotor 12 reaches its second position, the finger 14 leaves the upper surface of the Elevation 23 and comes into contact with the surface 22 on the shoulder 24 under the pretension of the vein band 15. When an attempt is now made to return the rotor 12 from its second position to its third position, the finger 14 engages on the shoulder 24 . Since the locking member 13 is rotatable with the rotor 12, a movement of the rotor 12 into its third position is v & rhMert,

In order to move the rotor to its third position, it must first be returned to its first position. During the movement of the rotor from its wide position to its harvesting position, the finger 14 runs on the surface 21 . and the free end of the finger 14 lies on the vertical face of the ramp: 5 & n. Pas free end dea finger 14 is determined by the T -rspannung d.-na Fecterbanies 15 in contact with the vertical curse · ¹ ":! R i fampe: ;;? geiiax ^ er ^ W * nn the Rutor 1.2 Ln his first position. ' /u./orwnt,- L> «find et:. '"..A de ,. Finger 14 at the lower enda of the Rarapa 2'j, no aie H im ρ β Zy w, vi ; - ■ ', ". : S; i:' passes over, so daiJ

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009840 / $ 133

the locking member 15 under the bias of the spring band 15 laterally is moved so that the finger 14 is again in alignment with the ramp surface 25 lies. As a result, the rotor can now return to the third from its first position via its second position Position are moved * with the locking member 15 the previously described Sequence of movements you run.

In Fig. 4 is an ignition switch as a second embodiment of the Invention shown. The spring band 15 is supported by a compression spring

26, which sits between the locking member 15 and the rotor 12. The locking member 15 is also here on the finger 14 with a metal pin

27 provided which extends in the direction of the rotor 12 and the is surrounded by the end turns of the compression spring 26. The end of the compression spring 26, which is etfernt from the locking member 15, is in a bore

28 secured in the rotor 12, with some turns of the spring 26 lying between the locking member 15 and the rotor 12 which are not gripped by the pin 27. The spring 26 ″ thus acts mainly in a direction parallel to the axis of rotation of the rotor 12, in such a way that the locking member 15 is pushed away from the rotor 12. However, if the locking member 15 is moved laterally relative to the rotor 12, the windings of the Sder 26 between the The rotor 12 and the locking member 15 are deformed ₉ so that the locking member 15 is laterally tensioned back into the position ₉ in which the spring 26 is unstressed.

The cam track 21 and the locking member 15 thus act together! To To prevent closing the circuit to the starter motor; until the Ignition circuit has been interrupted. If you use this The driver of the vehicle can therefore desi switches in an automobile Do not start the vehicle's starter engine when the engine is running the ignition circuit must first be interrupted by dax * Switch is moved to its first position before the third position of the switch can be reached to complete the circuit to the starter motor. . '

Patent claims "

009840/1393

Claims (3)

for claims 1.! Ignition switch for road vehicles with a housing and a within the housing for rotation from a first stable position to a second stable position and from the second stable position in a third unstable position mounted rotor, the rotor from the third unstable position in the second stable position is sprung back, characterized by an arcuate cam track (21) on the inner surface of the Housing (11) with surfaces which extend radially to the housing (11) in planes essentially at right angles to the axis of rotation of the rotor (12) extend a locking member rotatable with the rotor (12) (13) with a finger (14) 1 which is radially in contact with the Curved track (21) extends, and one on the locking member (I3) acting spring member (15)> (26) that the finger (14) in contact on the cam track (21) and for a radial pushing of the finger (I4) outwards with radial movement of the finger (14) inwards through the cam track (21) during the rotation of the rotor (12), with such an arrangement of the finger (14) and the cam track (21) is provided that the rotor (12) is prevented from moving from its second position to its third position, unless previously the rotor (12) out of its first has been moved to its second position. 2. Ignition switch according to claim 1, characterized in that the cam track (21) has a one-piece shoulder projecting close to the top (24) and the finger (I4) wanders over this shoulder (24), when the rotor (12) from the third position into the second Position is pushed back, such an arrangement being provided is that the shoulder (24) further movement of the rotor. (12) prevents the second position into the third position, except when the rotor has first passed through the first position. 057 Wa / Se - 2 - 009840/1395 3. Ignition switch according to claim 1 or 2, characterized in that the spring member is a compression spring (26) between the rotor (12) and the locking member (15) sits, 4. Ignition switch according to Claim 1 or 2, characterized in that the spring member is an essentially U-shaped spring band. (15), carried by the rotor (12) and at one end in an arc slot sits in the housing. 009840/1393