DE2351099A1 - LOCK, IN PARTICULAR FOR THE THEFT PROTECTION OF MOTOR VEHICLES - Google Patents

Description

PAT E NT LAWYERS

. JOACHIM K. ZENZ DIPL.-ING. FRIEDRICH G. HELBER

ESSEN-BREDENEY ALFREDSTRASSE 383 TELEPHONE: (0 2141) 47 26 TELEGRAM ADDRESS: EL ROPATENTE ESSEN

File number: NeUanitieldUng Commerzbank, Essen account 15162O2

, Postal checking account Essen No. 76

Named. Note: Lowe & Fletcher Ltd.

My mark: L 56 Date October 11, 1973

Lowe & Fletcher Ltd., Willenhall, County of Stafford, Great Britain

Lock, in particular for theft protection of motor vehicles

The invention relates to a lock, in particular for blocking a movable control member, such as the steering column of a motor vehicle, comprising a lock body, a displaceable between a locking position and a release position locking bolt _$ in the locked position with the control member is engageable and whose movement is limited New York Convention in the release device a movement of the control battery © tee handicap gnalSSt., furthermore with a »eiaea relatively -susa ScfoloßkSrper around sin © axis rotatable key-AiafEishm partially exhibiting«, key-operatedfesa SeWLofiaeehaai to move the locking bolt ia - at least one ©

a shift of the locking bolt ia s © ine lock position at least as long as the final ©! is completely inserted into the SCM-oßmeehanismus ₉ «© bsi ü & r iicherungs-

H / be

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mechanism one by the key from a first to one has second position displaceable key-scanning element, which in the key in the lock mechanism in held in its second position.

It was already a lock for the steering column of a motor vehicle proposed in which a blocking of the steering column of the motor vehicle by a locking bolt of the lock Preventing locking mechanism is provided before the key is removed from the lock. This castle has a rotatably arranged in a housing of the lock mechanism sleeve and a key receiving cylinder, which in the axial Direction is slidably arranged in the sleeve. A pair of key follower rollers are between one outer end of the key receiving cylinder and an end wall of the sleeve stored in this. These roles ensure that the cylinder assumes an internal axial position as long as the key is inserted.

The invention Is to create the object of a lock with a locking mechanism to prevent blocking of the vehicle wheels control member Inserted into Scliloß key that has a simpler design and more reliable operation and _f Compared to the above mentioned lock is cheaper to produce "

Starting from a lock of the aforementioned kind ·, this object is achieved in that the _s-key scanning Ie Schliisssl-Amfnaiimeteil disposed "This configuration eliminates the need for eggs arrangement- of a sleeve receiving the Schlüsssl sur-Abtsstelements _o

The invention is explained in more detail in the following description of an exemplary embodiment in connection with the drawing, specifically showing %

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FIG _o 1 is a sectional view through the lock in an axial center plane of the key-receiving member, wherein the key-receiving member are shown in its outer axial position, and a locking bolt in its locking position;

FIG. 2 shows a partial section along the section line II-II in FIG. 1 with the removed Key;

Fig 3 a a of Figure 2 corresponding partial sectional view but with the key inserted in the key receiving member, wherein the key-receiving member is in the inner axial position.

Fig. 4 is an end view in the direction of arrow IV in Fig. 1, the outside of the front End of the lock body lying parts of the lock are omitted;

Figure 5 is a rear end view of the housing of the lock shown in Figure 1;

6 is a front end view of a cylinder extension; which is part of the key receiving part of the one shown in FIG Lock forms;

7 shows a sectional view through the cylinder extension along the line VII-VII in Fig. 1;

8 is a sectional view through the cylinder extension along the line VIII-VIII in Fig. 1;

Figure 9 is a rear end view of the cylinder extension; and

FIG _o 10 is a sectional view taken along line XX in Figure "9"

The lock shown in the drawing has a lock body 10, on one side of which there is a recess 11 for receiving the steering column of a motor vehicle

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is formed, the lock body in the installed state with the steering column by a not shown clamp is connected, which closes the open side of the recess 11 and to which Lock body 10 screwed into threaded blind holes 12, also not shown Bolt is attached »

In the lock body is an open at the rear end of the lock body chamber 13 for receiving the Electrical switching device controlling ignition circuit and other circuits of the motor vehicle "The ignition switch device can be more conventional Be kind and has several fixed contacts, which, for example, to auxiliary circuits, a Ignition circuit and an engine starter circuit belong »The switching device also has one a rotor supported movable contact, which is rotatable about an axis 14 and which the fixed contacts Associated circuits or circuits excited one after the other.

In the lock body 10, a locking bolt 15 is mounted, which between a locking position shown in Fig. 1, in which it engages in the recess 11, and one essentially full-blown into the lock body withdrawn Fnaigab.estteilung is movable. When the lock is actuated, the locking bolt engages in its locking position in a slot which is in a collar of the steering column is formed, whereby the turning of the steering column is prevented or restricted will. In the release position, the locking bolt or locking bolt is disengaged from the slot so that the Steering column can rotate freely.

Is used to raise the locking bolt 15 from the blocking or locking position into the release position a key operated device with a key.

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Receiving part 16 and an associated housing 17. The housing is in a chamber 18 in the lock body 10 attached, the chamber 18 being provided in the region of the front end of the lock body 10 istο The housing protrudes slightly from the open front end of the lock body before «It is fixed in any way in the lock body, e.g. by a hardened pin, one in the chamber wall. . formed bore and a housing bore penetrated and is introduced into the lock body after the housing has been installed, or by one in the Sdioßkörper 10 hidden, spring-loaded piston which is designed to fit into a housing opening occurs when this is introduced into the chamber 18.

The key-Aufnähmeteil 16 comprises a cylinder 19 with spring-loaded tumblers 20 which are urged their illustrated in FIG. 1 ejected position in., In each of which an end portion of each tumbler or _o each pin from the cylinder in one of two diametrically opposed, engages provided on the inside of the housing 17 grooves. When the correct key is inserted into a keyway of the cylinder, all tumblers are withdrawn into the cylinder, whereby the cylinder is rotatable about the axis 14 relative to the housing. Such an order of the cylinder and housing is known.

The key receiving part 16 also has a one foot. Pin 25 on the cylinder 19 attached cylinder extension 24, which extends from the cylinder to the rear. The cylinder extension carries an actuating shaft 26, which penetrates an opening 27 formed in the locking bolt and engages in a journal bearing, that in a rotatably arranged in an opening of an end wall 29 of the lock body 10 cam part 28 is formed isto The shaft 26 and the journal bearing of the cam part have a complementary, non-circular shape

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Cross-section, so that the cam part rotates with the shaft about the axis 14. The cam part engages under a shoulder 30 formed on the locking bar so that the locking bar can be opened by rotating the cam member can be moved from its locking position to the release position »The cam part also protrudes in the chamber 13 and is designed so that it the rotor of a located in the chamber 13 switching device can operate.

To retain the locking bolt 15 in its release position, a holding element 31 is used, which is in a The carrier component 32 is mounted displaceably parallel to the axis 14, it being from the one shown in FIG. 1 Rest position can be transferred into a working position in which a rear end portion of the holding element in a forwardly open recess 33 of the locking bolt engages. As long as the retaining element is in the recess

33 engages, the locking bolt is positively secured in its release position.

The locking bolt is through a. Pair between the locking bar and an inner surface, the carrier component 32 inserted Compression springs 34 biased towards its locking position at one end of each spring is formed by a retaining lug 34a on the support component and the other end in a locking bolt Supported recess. When the holding element is moved into its rest position in the manner described below is, and the locking bolt is not completely with the slot formed in the collar of the steering column is aligned, the locking bolt comes to rest on the outer surface of the collar and is held by the spring

34 pressed against the latter. When the steering column is rotated before the locking bolt is in its release position is withdrawn, the locking bolt falls immediately into the slot of the federal government as soon as this with the

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The locking bolt is in alignment, which prevents further rotation of the steering column. The holding element 31 is urged into its operative position by a spring 35, the spring 35 in an im Retaining element formed blind hole sits and runs in the axial direction «, one end of the spring 35 is supported on a rearward-facing surface provided on the carrier component 32. To move the Holding element from the active position into its inactive or rest position is a driver device provided, which transmits an axial movement of the key receiving part 16 to the holding element. These Hitnehmervorrichtung has lugs 37 and 38, the each on the retaining element and on the cylinder extension 24 are provided. As shown in Fig. 1, the lugs 37 and 38 are the same distance in front of the axis .14 so that they can overlap in the axial direction = As shown in FIG. 7, the extension 38 extends only over part of the circumference of the cylinder extension, so that the lugs 37 and 38 overlap only in certain rotational positions of the key receiving part. .

The lock mechanism has a "safety mechanism" to prevent displacement of the locking bolt 15 in the locked position, as long as the key 22 is in the key channel 23 is introduced. This safety mechanism comprises the holding element 31, the cylinder extension 24, the projections 37 and 38, the cylinder 19, a key scanning element 39 and locking devices cooperating with the key scanning element. The key sensing element has the shape of a cylindrical roller, the axis of which is transverse to axis 14 of the lock and parallel to the larger Querscbjaittsseite of the key channel 23 runs. As shown in Fig. 2, the roller 39 lies partly within the key channel when the key is withdrawn. In this first position of the key scanning element, it extends from one side of the

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Key channel to the other., And. prevents so inserting the key. In the outer position of the key receiving part shown in FIGS 16 is the key scanning element 39 by the locking device 40 in its first Position held, the locking device one in a radially. Passage in cylinder 19 arranged slide 41, one end of which engages the key Ahtastelement while its other end with a protrusion 42 formed on the inwardly facing surface of the housing 17 cooperates · When the key receiving part 16 in is axially displaced into its inner position in the manner shown in FIG. 3, the slide 41 is relative to the projection 42 moved backwards so that it can move radially outward, and the key scanning element 39 can withdraw from the key channel 23 into the passage receiving the slide. if the attempt is made to introduce the key into the keyway 23 is therefore axially directed Pressure exerted with the key on the key scanning element 39, which initially results in an axial displacement of the Cylinder 19 in its inner position, causing what the key scanning element extends radially outward pushes out the key channel and enables the complete insertion of the key into the key channel.

While the key 22 is present in the key channel 23, the key scanning element 39 is attached to a Entry into the key channel is prevented and the slide 41 is therefore in the outer radial position shown in FIG. 3 held * In this position, the slide cooperates with the projection 42 in the sense that a learn axial displacement of the key recording ts 16 is prevented in its outer position. Since the axial displacement, of the key receiving element, from his inner position in its outer position is required to move the holding element 31 from its operative position into

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to transfer its rest position, such a displacement of the holding element cannot take place as long as how the key is in the key channel »

The key ~ ^H old element 16 is eiae. Compression spring 43 is pretensioned in its outer position, which surrounds the actuating shaft 26 between the cylinder projection 24 and a section of the holding element support component 32. The slide 41 and the projection 42 are provided with interacting surfaces which are inclined to the axis 14 in such a way are that the slide can slide up when withdrawn from the key channel key on the inclined surface of the projection 42 and the key sensing element 39 in its first position displaces ₉ allowing an axial displacement of the key-receiving part in its outer position. It can be seen that the spring 43 acts via the interposed cylinder extension 24, the cylinder 19, the slide 41 and the projection 42 on the key!

It will be appreciated ₉ that Aich the retaining element 31 can only move into its operative position. 'When the cylinder extension 24, and are displaced sufficiently to its intended attachment 38 from the position shown in Figure _e 1 position, either in reverse or by rotation " In addition, the cylinder extension does not mean by axial. Pressing the key on the key-key scanning element. 39 moved backward _s is before the letzter.® --SiCH by a distance from the Sehlüssellsanal 23 heransbewegtj the. equal to the distance covered by the H © lt © elaaaat when shifting from its rest position la its © ifirkstallöBg. Distance IsA ₅ % -jird. the An = sata 3 © not placed on the back of the Aasatsas 37 ^ and tiaaa represents the key = Äufnah © st @ ll gedicht wledjUia dl® Aaslfese 37 unü 38 wor d © ra Heransgietsea des Sctilüsssls

& Q9S19 / 027Q

to be brought into superposition ₅ comes the extension 38 at the base 37 to the system and the intended rotation of the key-Aufnahmefceils is thus prevented. A cam device is therefore provided for moving the key receiving part axially into its inner position after rotation to retract the locking bar 50 into its release part, and a holding device is formed which holds the key receiving part in this inner position. This cam device has spiral guide surfaces 44 and 45, which are formed on the cylinder extension 24 and the housing 17. These spiral surfaces are designed so that when the key receiving part is rotated, they move the locking bolt into its release position and actuate the switching device come to rest against each other in the chamber 13 if the key receiving part is not permanently in the intended inner position, and in the event of such an engagement they move the key receiving part backwards into its inner position «

The holding devices have a spring-loaded piston 46 in a bore formed in the lock body 10, which is urged into engagement with the cylinder extension 24 by a spring 47 in a blind hole formed in the piston, one end of the spring at a section 47a of the. Tragerbatiteils 32 is applied. When the key receiving part 16 is in the outer position shown in FIG. 1, the piston 46 is in a radial position. Outer surface of the Sjlindervslangung In attachment. When the key Aufnaiiaeteil is moved to its inner position ₉ of the plunger enters into one of the cylinders extending recess formed 4S eat a "as shown in Figo B shown ₃ © irstrsslst be dls AnsjaeliEKSiaf 48 nsih & zn uki ei® hilfts FISR Zjlinis ^^ verlSageruag fomsnniy s © that dsr SefelBssGl ^ iafnGloZKstsil SseE "si ines E / iaissl ^ ion 13S ^ fsdrsnt κ3ί? © @ Ώ Is £ rs _? z-jKJiZ ^ ru Ü & E UME ECöl & SEä, <fl © is. des ¹ AigiuSi © gwiesat .- ^^ - o

i 9 S 6 ι

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Over most of the length (i.e. the circumferential extent in relation to the cylinder extension) of the recess 48, the boundary walls of the recess run at right angles to the axis 1.4. How however Fig. 1 shows one end of the recess wall inclined at the rear of the recess to the axis 14 so that the piston 46 on the inclined wall portion 49 of the recess 48 releasing an axially retrograde movement of the key receiving part runs when the key receiving part assumes the rotation shown in Fig., in which the tumblers 20 are aligned with the grooves 21. In other rotational positions of the key receiving part prevents the Piston 48 an axial displacement of the key '»receiving part from its inner position.

A cycle of operation of the lock is described below, assuming that the key is first removed and the locking bolt is in its locked position »Insertion of the key in the key channel 23 leads to an axial displacement of the key receiving part 16 into its inner position and to displace the key scanning element from the key channel into its second position. if the key is fully inserted into the keyway, the tumblers 20 are completely withdrawn from the grooves 21, so that the cylinder 19 can be rotated freely. The key is then turned clockwise. One Rotation of 30 ° from the starting position moves the projection 38 out of the path of the insert 37, so that the holding element is free to move into its operative position is as soon as the locking bolt 15 reaches its release position o The cam part 28 is designed in such a way that that this takes place when the key is turned 45 ° from the starting position.

In the event that the key receiving part 16 axially is not shifted to its correct inner position,

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before the key, "scanning 39 * * ^ ° '° ^{υ u} is pushed out of the key channel sufficiently, fully einsuftihren the _key? The spiral lines 44 and 45 come to rest against each other in a 3-way rotation between 30 ° and 60 ° from the internal position, so that after the completion of a 60 ° rotation, the key-up would take part,! , stands and. the piston 46 falls into the recess 48. It can be seen? that there is wear and tear on the lock during its service life, in particular wear and tear on the slide 41 and the jump 42, a certain change in the axial displacement of the key receiving part, which is required before the key can be completely inserted into the key channel ₉ caused, and that ÖAS extent ü & aufgetratsftei s * wear, the size of the required Axialverschiebung.bestimmt.

You cylinder verianger'jng 24 is with one in Pig. The surface 51 shown _{in 9 provides 9} which then 9 when the holding element 31 is not shifted into the required _{operative position 9} as soon as the locking bar 15 is in its release position, feel free to move the locking element 16 on approach 37 comes to the plant, "wodursli the holding leasnt a ^ engsliliafig in seiae operative position

Wean the SshlSissel-Aiafealaaatdil lind the key of. the output stsIlöEg. from ^ a ¹ Ii ¹ O ⁰ gmäs-sht are, dia associated. Schaltjeoatakta sar control that . Auxiliary circuits of the - Faforsasicfs gsasälGsseno .Sine., Further rotation by 30 closes a «eli the ignition contacts and a continued rotation by 3Q xuhzt a & na from closing the connections.

isntaiSt'Sc .Sis Sefaalt ^ rriefetang is usually with. a F'BdSi .versehen _s which sur ¥ the TSILs erdrsliung äes .Sefcl-SJSäiS. serves, .the isit .. the _: rotor of the switching device "iota d« sr. starting position -in which the starter motors are locked into the ignition position, in which the ignition pulses are closed, the starter motor switching contacts

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However, if the operator looses the key in the ..: starting position, the rotatable parts of the lock are automatically moved to the ignition switch-on position.

If the lock is to be brought into locking engagement with that of the vehicle, »By installing it, the lock will be®! from the Zünäwxgsein schaltstelluag. Turned counterclockwise from Ik to the starting position *. An axial displacement of the key receiving part to the outside is prevented by the piston 46 until the starting angle of rotation is reached. The tumblers are furthermore arranged so that they so.lange _f can not be withdrawn from dem.Schlüsselkanal to the output spins is achieved division UNU the tumblers -are aligned with the grooves 21 ■ "

When the initial rotary pitch is reached, the key is withdrawn from the keyway «If the key is only partially off. the key channel is withdrawn * is an axial displacement. of the key receiving part in. its outer position by the cooperation of the _; Slide. 41 with the projection 42 prevents · As soon as the key is, however, completely withdrawn from the key channel, the key scanning element 39 can move freely into the key channel and the key receiving part then shifts into its outer part as a result of the action of the spring 43 Position · This axial displacement of the key receiving part is transmitted to the holding element 31, which is moved into its rest position, whereby the locking bolt is unlocked and it can move into its locking position as a result of the tension of the spring 34 «

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Pas key-Abtästslemeni 39 is ' before in., The height of the mouth of the key channel 23 is arranged so that the key has to be withdrawn essentially completely from the key channel before the locking bolt can be moved into a self-saving position. el-sensing element could however you & n any andecea. Stella of the key channel 23 are arranged, whereby the Sperri.eg.el would then fall into its locked position when the key is partially withdrawn from aetst key channel.

When assembling the components of the lock, the Retaining element support component 32 inserted into a lock body opening, which is located on the of the recess 11 opposite side of the lock body 10 is formed «The lock body is then over a protruding lip of the carrier part screwed, to keep the latter in position »Then the key receiving part 16 together with the housing and the operating shaft 26 inserted into the lock housing “Whereupon the housing 17 is fastened in the lock body in the aforementioned manner.

When the key receiving part 16 is inserted into the lock body, the cylinder 19 and the cylinder extension 24 are held in such a rotational position that the projection 33 is angularly spaced from the piston 47 and the projection 37. However, in order to permit movement of that part of the cylinder extension which is adjacent to the recess 48 on the rear side behind the piston 46, the latter must be displaced radially outwards into the position shown in FIG. ^z u this purpose, the cylinder extension provided with the shown in Fig., rearward facing inclined face 50 9 which comes to bear on the piston when the key-receiving member is used in aen lock body, the piston being on the surface 50 as far as up

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runs until it reaches the radial outer surface of the cylinder extension «

In a variant of the embodiment shown in the drawings, not shown. In the embodiment, instead of the orphan key and the slide 41, a lever is provided. This lever is held in the cylinder 19 in a recess that runs from the keyway to the cylinder . Lever is connected by a pivot pin to the cylinder j whereby movement of the lever relative to the cylinder about an axis is possible, which runs parallel to the longer sides of the key channel and lies approximately in the middle between the key channel and the cylinder deruHifang _o The lever has two facing the pivot pin of in mutually perpendicular directions of lever arms on the ο backward facing surface of the ¥ © rSprungs 42 does not proceed as shown in Figs. 2 and 3 inclined inclined ₉ but perpendicular axis of the cylinder sur _β

When the cylinder is in its outer position, one arm of the lever protrudes into the key channel and the lever is attempted to insert the key in different positions by the engagement of the other lever arm and the projection formed on the handlebar from the key in VorwÜrtsrichtuag on the lever force exerted the cylinder.axial inward and with this axial displacement, the lever can pivot ver in a second position in which it releases the key channel and with the projection "comes into engagement and the cylinder in its inner position hold

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Claims (5)

PATENTANWÄLTE ZENZ & HELBER - ESSENI ALFftfDSTFLASSE 383 TEL .: (02141) 472687 Claims: 1.1 Lock, in particular for blocking a movable control component of a motor vehicle, with a lock body ₉ , a locking bolt which can be displaced between a blocking position and a price division, which can be brought into engagement in the blocking division with the control skin part and its occupancy, limited and in the release position one. Movement of the control component allows unhindered, also a relatively .auai Schl © .Bkörper..uaa an axis rotatable .. key-receiving part having key-operated lock mechanism for moving the .Sperriegel in at least one seal and a safety mechanism to prevent a displacement of the locking bolt in its locking position at least so long the key completely in the. Lock mechanism eiagsscfeobeE. _s is a "sbei.der Sicherungsraechanismus. by the key of a first set in a sielte position & feares the Sefelussel scanning element has 5 daa with ± m lockseehanism held in its · two tan position wlrü _d characterized by " ύ & Β the SealOssel ^ Sstasteleset C 39} in the key. 2 · Schlsfi aadi ÄRSpriESs I ₃ daöiireh marked that the safe? 3.E-gsHischanisBii? .S slsa im-.Ssfelaßköspsr ClO) arranged holding area C 31) anÄcels.t _f the relati ?. warn lock body between an active- ^ ad siaer Suheatsllimg. irerscisMsiiar is _s of which it knows ± z ubs Wiffkstteilung, the shift, of the locking bolt from the. Frsigasestelliang in. Aia.-Sperrstellaiig foraschlündig soft ± iitMrt ₉ that .dar. Key-'AafBahfietell C16). in .. his first. Position. standing eLemeut C 39) relative sam Sefelofi & Srpßr. CiO) Ia displaceably arranged is * ä ₅ nml da® siae With {Approach® 37 ^ aο 28) mzs tfesrtragung an * AxielbeweguEig des 409819/0270 Key receiving part ί16) on d © K E & lt @ elem®nt and its shift from the active to the charging position are intended «, 3 «lock according to claim 2 _S thereby the retaining element. (3D relative to .. part (16) is axially displaceable; and that a spring C35) is provided, which pretensions the holding element in its VJlsIes division " 4. Lock according to one of claims 1 to 3 _9, characterized in that the key AufnaiiEaetell C16) a key «channel. (23) with a rectangular cross-section has the key sensor C39) in a recess which extends parallel to a shorter part of the lock channel from the key channel radially over the circumferential surface of the key housing part (16). 5. Lock according to claim 4, characterized in that the key scanning element (39) is designed as a roller and a slide (41) is also provided _{in the recess 5 of} which one end with the key «-Abtast @ I @ meni and the other The end cooperates with a projection (42) formed on the lock body. 409819/0270