CA1151889A - Steering lock - Google Patents
Steering lockInfo
- Publication number
- CA1151889A CA1151889A CA000364684A CA364684A CA1151889A CA 1151889 A CA1151889 A CA 1151889A CA 000364684 A CA000364684 A CA 000364684A CA 364684 A CA364684 A CA 364684A CA 1151889 A CA1151889 A CA 1151889A
- Authority
- CA
- Canada
- Prior art keywords
- blocking part
- locking bolt
- blocking
- steering lock
- lock according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R25/02—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism
- B60R25/021—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch
- B60R25/0211—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch comprising a locking member radially and linearly moved towards the steering column
- B60R25/02115—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch comprising a locking member radially and linearly moved towards the steering column key actuated
- B60R25/02126—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch comprising a locking member radially and linearly moved towards the steering column key actuated with linear bolt motion perpendicular to the lock axis
- B60R25/02128—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch comprising a locking member radially and linearly moved towards the steering column key actuated with linear bolt motion perpendicular to the lock axis comprising safety devices avoiding locking until removal of the key
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
Steering lock with lock cylinder for motor vehicles having a locking bolt spring-loaded in the direction towards the locking position and arresting the steering column. The bolt is displaceable into the unlocked position by a dog arranged on a prolongation of the cylinder core and, after the dog has been moved back, continues to be held in the unlocked position by a blocking part arranged between cylinder core and locking bolt and is held in its blocking position by a blocking member which, during the movement of the locking bolt into the unlocked position, runs along a face of the blocking part, while the blocking part yields and snaps into engagement on the blocking member. The blocking member, after withdrawal of the key, is movable into a position in which it liberates the blocking part. The blocking part is a slider which is movable parallel to the longitudinal axis of the locking bolt and is pivotable, for engagement with the blocking member, in a plane perpendicular to the axis of the lock cylinder.
Steering lock with lock cylinder for motor vehicles having a locking bolt spring-loaded in the direction towards the locking position and arresting the steering column. The bolt is displaceable into the unlocked position by a dog arranged on a prolongation of the cylinder core and, after the dog has been moved back, continues to be held in the unlocked position by a blocking part arranged between cylinder core and locking bolt and is held in its blocking position by a blocking member which, during the movement of the locking bolt into the unlocked position, runs along a face of the blocking part, while the blocking part yields and snaps into engagement on the blocking member. The blocking member, after withdrawal of the key, is movable into a position in which it liberates the blocking part. The blocking part is a slider which is movable parallel to the longitudinal axis of the locking bolt and is pivotable, for engagement with the blocking member, in a plane perpendicular to the axis of the lock cylinder.
Description
9 : ~
The invention relates to a steering lock with lock cylinder for motor vehicles.
One such steering lock is known from German Publ.
Spec. No. 20 59 215. This known steering lock comprises as blocking part an element of disc form which reaches its posi~
- tion blocking bolt in that it rotates about an axial extension , -of the cylinder core and is held fast in this position by a blocking lever controlled by the key. After withdrawal of the key the blocking part is turned back by a torsion spring which is arranged coaxially about the cylinder core extension and -presses the blocking part towards the cylinder core. So that the end of the key-controlled lever may arrest behind one face of this blocking part in order to hold it fast in the blocking position, the blocking part slides with an oblique face along ~ -the lever end and in this movement is displaced or tilted i axially in the direction of the locking bolt against the pres-sure of the spring so that the blocking part not only rotates -~
in a plane situated transversely of the longitudinal axis of ~ -~ the lock cylinder but additionally tips in the axial direction, so that additional space is necessary in the axial direction. ~-Furthermore a spring is necessary which must exert a pressure not only in a direction of rotation but also in the axial direction. The fitting of such a~blocking part, including the spring, on the cylinder core extension is difficult and time-consuming. ~ ;
It is an object of the invention to produce a steer- -~
ing lock of small construction in the radial and axial direc-tions which comprises few individual parts, is easy to fit and -possesses low weight.
According to the present invention, there is provided a steering lock with lock cylinder for motor vehicles having a locking bolt spring-loaded in the direction towards the locking ., j . .
~5~8l39 position and arresting the steering column, which bolt is displaceable into the ùnlocked position by a dog arranged on a prolongation of the cylinder core and, after the dog has been moved back, continues to be held in the unlocked position by a blocking part which is arranged between cylinder core and locking bolt and is held in its blocking position by a blocking member which, during the movement of the locking bolt into the unlocked position, runs along a face of the blocking part, while the blocking part yields and snaps into engagement on the blocking member, and the blocking member, after withdrawal of the key, is movable into a position in which it liberates the blocking part, characterized in that the blocking part is a I -slider which is movable parallel to the longitudinal axis of the locking bolt and is pivotable, for engagement with the blocking member, in a plane perpendicular to the axis of the lock cylinder.
- The blocking part in accordance with the invention moves only in a plane situated transverse to the cylinder core extension, so that space can be saved between the locking bolt and the cylinder core and thus the lock is of small construc-tion. In the radial direction too the blocking part requires only little free space with a long locking bolt guide. The blocking part needs no spring for its movements, but makes use of the spring force of the spring which loads the locking bolt.
The fitting of this steering lock is especially simple, since the parts, for fitting, need only ot be laid or set into the steering lock body, without expensive pre-assembly. The small ~ -dimensions make themselves noticeable also with regard to lower weight.
Due to this solution, with equally high security, additional springs, pawls and the like parts are saved and essential functions are transferred to parts which are in any
The invention relates to a steering lock with lock cylinder for motor vehicles.
One such steering lock is known from German Publ.
Spec. No. 20 59 215. This known steering lock comprises as blocking part an element of disc form which reaches its posi~
- tion blocking bolt in that it rotates about an axial extension , -of the cylinder core and is held fast in this position by a blocking lever controlled by the key. After withdrawal of the key the blocking part is turned back by a torsion spring which is arranged coaxially about the cylinder core extension and -presses the blocking part towards the cylinder core. So that the end of the key-controlled lever may arrest behind one face of this blocking part in order to hold it fast in the blocking position, the blocking part slides with an oblique face along ~ -the lever end and in this movement is displaced or tilted i axially in the direction of the locking bolt against the pres-sure of the spring so that the blocking part not only rotates -~
in a plane situated transversely of the longitudinal axis of ~ -~ the lock cylinder but additionally tips in the axial direction, so that additional space is necessary in the axial direction. ~-Furthermore a spring is necessary which must exert a pressure not only in a direction of rotation but also in the axial direction. The fitting of such a~blocking part, including the spring, on the cylinder core extension is difficult and time-consuming. ~ ;
It is an object of the invention to produce a steer- -~
ing lock of small construction in the radial and axial direc-tions which comprises few individual parts, is easy to fit and -possesses low weight.
According to the present invention, there is provided a steering lock with lock cylinder for motor vehicles having a locking bolt spring-loaded in the direction towards the locking ., j . .
~5~8l39 position and arresting the steering column, which bolt is displaceable into the ùnlocked position by a dog arranged on a prolongation of the cylinder core and, after the dog has been moved back, continues to be held in the unlocked position by a blocking part which is arranged between cylinder core and locking bolt and is held in its blocking position by a blocking member which, during the movement of the locking bolt into the unlocked position, runs along a face of the blocking part, while the blocking part yields and snaps into engagement on the blocking member, and the blocking member, after withdrawal of the key, is movable into a position in which it liberates the blocking part, characterized in that the blocking part is a I -slider which is movable parallel to the longitudinal axis of the locking bolt and is pivotable, for engagement with the blocking member, in a plane perpendicular to the axis of the lock cylinder.
- The blocking part in accordance with the invention moves only in a plane situated transverse to the cylinder core extension, so that space can be saved between the locking bolt and the cylinder core and thus the lock is of small construc-tion. In the radial direction too the blocking part requires only little free space with a long locking bolt guide. The blocking part needs no spring for its movements, but makes use of the spring force of the spring which loads the locking bolt.
The fitting of this steering lock is especially simple, since the parts, for fitting, need only ot be laid or set into the steering lock body, without expensive pre-assembly. The small ~ -dimensions make themselves noticeable also with regard to lower weight.
Due to this solution, with equally high security, additional springs, pawls and the like parts are saved and essential functions are transferred to parts which are in any
- 2 ': ' ~ ' - . - ' ., ~ , . ,:' ' - . .: :
~151889 case integral components of a steering lock. While sliders are known ~ se in steering locks, in these additional movable parts are always necessary as arresting means, so that a high number of parts is reached and these locks are expensive to fit and possess relatively large dimensions in the radial and axial directions. i~-Advantageous developments of the invention will be described hereinafter.
Examples of embodiment of the invention are illus-trated in the drawings and will be described in greater detail below. -FIGURE 1 shows a longitudinal section through a steering iock in the locking readiness position;
FIGURE 2 shows a cross-section through the steering lock along the line I - I in Figure l;
FIGURE 3 shows a cross-section through the steering ~ lock according to Figure 2, in the locking position; Figure 3 - - -is located on the sheet containing Figures 5, 6 and 7.
FIGURE 4 shows a longitudinal section through the ;
steering lock along the line II - II in Figure 2;
FIGURE 5 shows a perspective representation of the biocking part: -FIGURES 6 and 7 show alternative embodiments of the blocking part. ;
The steering lock comprises a steering lock body 1 ~-the external dimensions of which correspond to the steering reception opening in the motor vehicle, so that it can be -~
pushed into this opening. On the side accessible to the driver ~;~
lock cylinder 2 is arranged, secured by shape-locking engage-ment in the steering lock body, and comprises in the region of ,;;
the key entry a cap 4 and bush 3 capable of resistance to ~
cutting. The lock cylinder 2 comprises a cylinder housing 5 ~ ~-: ~ ~ 3 ~
and an axial.ly non-displaceably mounted cylinde~r core 6 rotatable therein, in which there are arranged the spring- ¦ :
loaded tumbler pins 8 influenced by the key 7 and acting in the direction of rotation of the cylinder core, which pins cooperate with blocking edges which are formed by radial widenings 8, 10, extending parallel with the cylinder axis, of the cylinder housing which adjoins the cylinder core /
:' ; ~
/
,,'`.::
i~ - 3a - ~
., -on all sides. Approximately axially parallel in the cylinder housing 5 a double-armed lever is arranged as blocking member 11 which can be pivoted in a plane extending through the axis of the cylinder core about a spindle 12 which is fast in the cylinder housing and extends outside the cylinder core at right angles to the cylinder core axis. The upper arm 13 of the lever 11, which reaches to the end face of the lock cylinder, lies in the path of displacement of a control dog (slider) 14 mounted radially movably in the region of the key entry in the cylinder core 6, which dog in one position reaches with one .:
end into the key passage 15 and is aligned by the other end with the peripheral surface of the cylinder core. The lower arm 16 of the lever 11 on the locking bolt side extends with a protuber-ance 17 of nose form directed towards the middle of the cylinder ~ ;
into the edge region of a blocking part 18 of frame form ar-ranged at right angles to the cylinder axis, which part 18 is mounted for displacement parallel to the locking bolt 19 -between the lQck cylinder core 6 and the locking bolt in the ~ ;
steering lock body 1. The blocking part 18 acting as slider ~
has a longitudinal opening 33 axially parallel with the locking ~ -bolt, through which there is pushed a coaxial shank 32 of a coaxial prolongation 29 of the cylinder core 6.
In a marginal zone 20 the blocking part 18 has a recess 18c of locking tooth form in which there lies the protuberance 17 of the lever arm 16, when the locking bolt is driven out.
When the blocking part 18 is displaced, the protuberance 17 comes on to a ramp face of a locking tooth 21 of the blocking part 18. The blocking part 18 then deviates transversely of the longitudinal direction of the locking bolt and snaps with the end face 21a behind the protuberance 17. On the side remote from the steering system the blocking part 18 is provided with a protuberance 22 rising to the lock cylinder side and protruding :
at right angles from the control part, which protuberance comes to abut on a parallel protuberance 23 of the locking bolt 19, which is displaceably mounted in the steering lock body. The locking bolt is loaded in the steering direction by a spring 24 which bears on an angled-off closure piece 26 covering the fitting opening 25 of the locking bolt 19, which closure piece, with a part 27 extending to the locking bolt longitudinal axis, extends over the centre of the lock so far that an opening 28 arranged therein can be penetrated by parts extending in the axial direction of the lock, especially the :
shank 32 of the prolongation of the cylinder core 6, which effectively prevent unauthorised removal of the closure piece 26. .
On the prolongation 29 there is formed a dog in the ~ :
form of a radial widening 30 of segment form between control part 18 and cylinder core 6, which comes to abut for displacement with an axial, cylindrical, eccentric face on the protuberance 22 of the blocking part and thus also displaces the locking bolt 19, since its protuberance 23 abuts on the protuberance 22. -In the further axial extension the prolongation 29 penetrates : . .
with its shank 32 through not only the opening 33 of the blocking ~ -part 18, but also a longitudinal opening 34 of the locking bolt -- 19 and the opening 28 of the closure piece 26. With an end .
zone 35 of corresponding formation the shank 32 engages in shape-locking manner in the rotatable part of the steering lock switch 36. -~:
The blocking part 18 is additionally pivotable in a plane extending transversely of the lock cylinder axis about :
a pivot point P which is formed by the surface of the control cam : .
of the dog 30, the blocking part 18 abutting with an edge of a protuberance 22 on this surface. This edge and thus the pivot point P too lie on the side of a plane through the lock cylinder ~:
axis and through the locking bolt axis on which the end of the -5~
1151~89 lever 11 also lies. Since the protuberance 23 abuts on the end face 18c of the blocking part 18 at a point K which lies more remote than the pivot point P from the blocking member 11 or the protuberance 17 of the blocking member, transversely of the locking bolt longitudinal axis (and in the plane of the blocking part of plate form), a pivoting of the blocking part 18 takes . .
place during its shifting away from the steering column against a force Kl which is directed approximately transversely of the ~ ;
locking bolt axis in the plane of the blocking part 18 of plate form to the protuberance 17, and is generated by the action of the helical compression spring 24 loading the locking bolt in the -direciton of the steering column. This spring presses the ;~
protuberance 23 against the end face 18c of the blocking part ~ --and generates a moment about the pivot point P which produces the resilient force Kl. The end face 18c forms an obtuse angle of about 170 the apex S of which, during the pivoting of the blocking part, forms the abutment point for the protuberance 23.
In the steering lock body a protruding turned part 37 is mounted which is pressed outwards by a spring 38 which - 20 bears on an annular face 39 of the steering lock body. The protruding turned part 37 protrudes with a part 40 of its axial extend beyond the external circumferential surface of the steering lock body 1, in order to be able to snap into a recess of the lock socket. With the opposite side 41 it lies in the zone of pivoting of the radial dogs 30 of the prolongation piece 29.
The blocking part 18a as represented in Figure 6 carries on the end remote from the steering column a metallic leaf spring 43 which lies in between the protuberance 22 and the -protuberance 23 and seeks to press the blocking part 18 away from the locking bolt protuberance 23 towards the steering column.
The leaf spring can also be replaced by a resilient synthetic .:'- :
''` ' ' ' ~151889 plastics arm 45 formed on the blocking part 18b. When the locking bolt is not yet engaged in the steering column and when the lever 11 is disengaged from the blocking part 18 (by reason of withdrawal of the key), the blocking part is pressed by these springs 43, 45 into a position in which it is not manipulable by tools introduced without authorisation. -Starting from the position of the lock parts in the locking position as illustrated in Figure 3, where the key 7 is introduced into the key passage 15 of the cylinder core 6 for the liberating arrangement of the tumbler pins 8 and is turned, according to the path of rotation of the steering lock, into the drive position, the following takes place: The slider 14 comes to abut with one end on the key shank and with the other end on the lever arm 13 of the lever 11. The lever 11 is here pivoted about the spindle 12 and engages with the protuberance 17 of the lever arm 16 in the recess 18c of the blocking part 18. In the subsequent rotation by means of the key 7 the eccentric face of the dog 30 on the prolongation piece 29 acts upon the protuberance 22 of the blocking part 18 and displaces the latter, and thus the blocking part 18 displaces the protuberance 23 and the locking bolt 19 against the action of the spring 24 into the unblocked position. The control part 18 comes with the ramp face 21b of the detent 21 to abut on the protuberance 17, whereby the control part 18 is forced, against -- the force of the locking bolt spring 24, into a position deviating from its central longitudinal axis, until the protuberance 17 comes to abut behind the detent 21 on the face 21a and thus arrests the blocking member and the locking bolt in the unblocked position, irrespective of further lock actuation by the key.
In this rotation of the lock parts, which is possible only by means of the key, the radial dog 30 with its edge limitation clears the displacement path of the protruding turned part 37.
. -115~889 The protruding turned part 37, which effects the arresting ofthe steering lock in the socket on the vehicle, can thus be displaced appropriately in the direction of the lock axis if dismantling of the steering lock is necessary.
To reach the locking position the key is rotated in the opposite direction into the stop position. In the --resultant locking readiness position according to Figure 2, -the blocking part 18 comes to abut with the face 21a of the detent 21 on the protuberance 17 of the blocking lever 11. The -~ -locking bolt is thus held in the unlocked position. On the subsequent complete withdrawal of the key the supporting of the blocking member (blocking lever) 11 by the slider 14 -ceases. Due to the action of the locking bolt spring 24 upon the blocking part 18 the blocking lever 11 is pivoted by the detent 21 about its pivot point 12 and clears the path for displacement of the control part 18 into the blocking position.
The plane in which the blocking lever 11 is pivoted extends at an angle ~ of about 45 to the longitudinal axis of the control part 18 and of the locking bolt 19. Thus the face 21a of the detent 21 and the face of the protuberance 17 coming to abut on it can extend parallel to one another and at an angle of 90 to the longitudinal axis of the locking bolt. This advantageously results, in the locking readiness position, in a functionally reliable detention of the blocking part 18 on the blocking lever ;~
11 and abutment of the blocking part 18 on the protuberance 23 of the locking bolt, which precludes a liberating pivoting of ' the control part 18. -The control parts 42 and 44 as illustrated in Figures 6 and 7 achieve the object that the blocking part, after with- -drawal of the key, is shifted by the springs 43, 45, even without the action of the locking bolt spring 24, into a position in which they cannot be manipulated by the blocking lever. Thus , ' ' ,, .
115188~
with low expense an additional security is advantageously achieved, if the locking bolt, after withdrawal of the key, is not engaged in the locking slot of the locking sleeve on the steering spindle, and rests on the circumferential surface thereof. -r.,. 1 ,`t. `. , .'' ` ',' ~ ~
~151889 case integral components of a steering lock. While sliders are known ~ se in steering locks, in these additional movable parts are always necessary as arresting means, so that a high number of parts is reached and these locks are expensive to fit and possess relatively large dimensions in the radial and axial directions. i~-Advantageous developments of the invention will be described hereinafter.
Examples of embodiment of the invention are illus-trated in the drawings and will be described in greater detail below. -FIGURE 1 shows a longitudinal section through a steering iock in the locking readiness position;
FIGURE 2 shows a cross-section through the steering lock along the line I - I in Figure l;
FIGURE 3 shows a cross-section through the steering ~ lock according to Figure 2, in the locking position; Figure 3 - - -is located on the sheet containing Figures 5, 6 and 7.
FIGURE 4 shows a longitudinal section through the ;
steering lock along the line II - II in Figure 2;
FIGURE 5 shows a perspective representation of the biocking part: -FIGURES 6 and 7 show alternative embodiments of the blocking part. ;
The steering lock comprises a steering lock body 1 ~-the external dimensions of which correspond to the steering reception opening in the motor vehicle, so that it can be -~
pushed into this opening. On the side accessible to the driver ~;~
lock cylinder 2 is arranged, secured by shape-locking engage-ment in the steering lock body, and comprises in the region of ,;;
the key entry a cap 4 and bush 3 capable of resistance to ~
cutting. The lock cylinder 2 comprises a cylinder housing 5 ~ ~-: ~ ~ 3 ~
and an axial.ly non-displaceably mounted cylinde~r core 6 rotatable therein, in which there are arranged the spring- ¦ :
loaded tumbler pins 8 influenced by the key 7 and acting in the direction of rotation of the cylinder core, which pins cooperate with blocking edges which are formed by radial widenings 8, 10, extending parallel with the cylinder axis, of the cylinder housing which adjoins the cylinder core /
:' ; ~
/
,,'`.::
i~ - 3a - ~
., -on all sides. Approximately axially parallel in the cylinder housing 5 a double-armed lever is arranged as blocking member 11 which can be pivoted in a plane extending through the axis of the cylinder core about a spindle 12 which is fast in the cylinder housing and extends outside the cylinder core at right angles to the cylinder core axis. The upper arm 13 of the lever 11, which reaches to the end face of the lock cylinder, lies in the path of displacement of a control dog (slider) 14 mounted radially movably in the region of the key entry in the cylinder core 6, which dog in one position reaches with one .:
end into the key passage 15 and is aligned by the other end with the peripheral surface of the cylinder core. The lower arm 16 of the lever 11 on the locking bolt side extends with a protuber-ance 17 of nose form directed towards the middle of the cylinder ~ ;
into the edge region of a blocking part 18 of frame form ar-ranged at right angles to the cylinder axis, which part 18 is mounted for displacement parallel to the locking bolt 19 -between the lQck cylinder core 6 and the locking bolt in the ~ ;
steering lock body 1. The blocking part 18 acting as slider ~
has a longitudinal opening 33 axially parallel with the locking ~ -bolt, through which there is pushed a coaxial shank 32 of a coaxial prolongation 29 of the cylinder core 6.
In a marginal zone 20 the blocking part 18 has a recess 18c of locking tooth form in which there lies the protuberance 17 of the lever arm 16, when the locking bolt is driven out.
When the blocking part 18 is displaced, the protuberance 17 comes on to a ramp face of a locking tooth 21 of the blocking part 18. The blocking part 18 then deviates transversely of the longitudinal direction of the locking bolt and snaps with the end face 21a behind the protuberance 17. On the side remote from the steering system the blocking part 18 is provided with a protuberance 22 rising to the lock cylinder side and protruding :
at right angles from the control part, which protuberance comes to abut on a parallel protuberance 23 of the locking bolt 19, which is displaceably mounted in the steering lock body. The locking bolt is loaded in the steering direction by a spring 24 which bears on an angled-off closure piece 26 covering the fitting opening 25 of the locking bolt 19, which closure piece, with a part 27 extending to the locking bolt longitudinal axis, extends over the centre of the lock so far that an opening 28 arranged therein can be penetrated by parts extending in the axial direction of the lock, especially the :
shank 32 of the prolongation of the cylinder core 6, which effectively prevent unauthorised removal of the closure piece 26. .
On the prolongation 29 there is formed a dog in the ~ :
form of a radial widening 30 of segment form between control part 18 and cylinder core 6, which comes to abut for displacement with an axial, cylindrical, eccentric face on the protuberance 22 of the blocking part and thus also displaces the locking bolt 19, since its protuberance 23 abuts on the protuberance 22. -In the further axial extension the prolongation 29 penetrates : . .
with its shank 32 through not only the opening 33 of the blocking ~ -part 18, but also a longitudinal opening 34 of the locking bolt -- 19 and the opening 28 of the closure piece 26. With an end .
zone 35 of corresponding formation the shank 32 engages in shape-locking manner in the rotatable part of the steering lock switch 36. -~:
The blocking part 18 is additionally pivotable in a plane extending transversely of the lock cylinder axis about :
a pivot point P which is formed by the surface of the control cam : .
of the dog 30, the blocking part 18 abutting with an edge of a protuberance 22 on this surface. This edge and thus the pivot point P too lie on the side of a plane through the lock cylinder ~:
axis and through the locking bolt axis on which the end of the -5~
1151~89 lever 11 also lies. Since the protuberance 23 abuts on the end face 18c of the blocking part 18 at a point K which lies more remote than the pivot point P from the blocking member 11 or the protuberance 17 of the blocking member, transversely of the locking bolt longitudinal axis (and in the plane of the blocking part of plate form), a pivoting of the blocking part 18 takes . .
place during its shifting away from the steering column against a force Kl which is directed approximately transversely of the ~ ;
locking bolt axis in the plane of the blocking part 18 of plate form to the protuberance 17, and is generated by the action of the helical compression spring 24 loading the locking bolt in the -direciton of the steering column. This spring presses the ;~
protuberance 23 against the end face 18c of the blocking part ~ --and generates a moment about the pivot point P which produces the resilient force Kl. The end face 18c forms an obtuse angle of about 170 the apex S of which, during the pivoting of the blocking part, forms the abutment point for the protuberance 23.
In the steering lock body a protruding turned part 37 is mounted which is pressed outwards by a spring 38 which - 20 bears on an annular face 39 of the steering lock body. The protruding turned part 37 protrudes with a part 40 of its axial extend beyond the external circumferential surface of the steering lock body 1, in order to be able to snap into a recess of the lock socket. With the opposite side 41 it lies in the zone of pivoting of the radial dogs 30 of the prolongation piece 29.
The blocking part 18a as represented in Figure 6 carries on the end remote from the steering column a metallic leaf spring 43 which lies in between the protuberance 22 and the -protuberance 23 and seeks to press the blocking part 18 away from the locking bolt protuberance 23 towards the steering column.
The leaf spring can also be replaced by a resilient synthetic .:'- :
''` ' ' ' ~151889 plastics arm 45 formed on the blocking part 18b. When the locking bolt is not yet engaged in the steering column and when the lever 11 is disengaged from the blocking part 18 (by reason of withdrawal of the key), the blocking part is pressed by these springs 43, 45 into a position in which it is not manipulable by tools introduced without authorisation. -Starting from the position of the lock parts in the locking position as illustrated in Figure 3, where the key 7 is introduced into the key passage 15 of the cylinder core 6 for the liberating arrangement of the tumbler pins 8 and is turned, according to the path of rotation of the steering lock, into the drive position, the following takes place: The slider 14 comes to abut with one end on the key shank and with the other end on the lever arm 13 of the lever 11. The lever 11 is here pivoted about the spindle 12 and engages with the protuberance 17 of the lever arm 16 in the recess 18c of the blocking part 18. In the subsequent rotation by means of the key 7 the eccentric face of the dog 30 on the prolongation piece 29 acts upon the protuberance 22 of the blocking part 18 and displaces the latter, and thus the blocking part 18 displaces the protuberance 23 and the locking bolt 19 against the action of the spring 24 into the unblocked position. The control part 18 comes with the ramp face 21b of the detent 21 to abut on the protuberance 17, whereby the control part 18 is forced, against -- the force of the locking bolt spring 24, into a position deviating from its central longitudinal axis, until the protuberance 17 comes to abut behind the detent 21 on the face 21a and thus arrests the blocking member and the locking bolt in the unblocked position, irrespective of further lock actuation by the key.
In this rotation of the lock parts, which is possible only by means of the key, the radial dog 30 with its edge limitation clears the displacement path of the protruding turned part 37.
. -115~889 The protruding turned part 37, which effects the arresting ofthe steering lock in the socket on the vehicle, can thus be displaced appropriately in the direction of the lock axis if dismantling of the steering lock is necessary.
To reach the locking position the key is rotated in the opposite direction into the stop position. In the --resultant locking readiness position according to Figure 2, -the blocking part 18 comes to abut with the face 21a of the detent 21 on the protuberance 17 of the blocking lever 11. The -~ -locking bolt is thus held in the unlocked position. On the subsequent complete withdrawal of the key the supporting of the blocking member (blocking lever) 11 by the slider 14 -ceases. Due to the action of the locking bolt spring 24 upon the blocking part 18 the blocking lever 11 is pivoted by the detent 21 about its pivot point 12 and clears the path for displacement of the control part 18 into the blocking position.
The plane in which the blocking lever 11 is pivoted extends at an angle ~ of about 45 to the longitudinal axis of the control part 18 and of the locking bolt 19. Thus the face 21a of the detent 21 and the face of the protuberance 17 coming to abut on it can extend parallel to one another and at an angle of 90 to the longitudinal axis of the locking bolt. This advantageously results, in the locking readiness position, in a functionally reliable detention of the blocking part 18 on the blocking lever ;~
11 and abutment of the blocking part 18 on the protuberance 23 of the locking bolt, which precludes a liberating pivoting of ' the control part 18. -The control parts 42 and 44 as illustrated in Figures 6 and 7 achieve the object that the blocking part, after with- -drawal of the key, is shifted by the springs 43, 45, even without the action of the locking bolt spring 24, into a position in which they cannot be manipulated by the blocking lever. Thus , ' ' ,, .
115188~
with low expense an additional security is advantageously achieved, if the locking bolt, after withdrawal of the key, is not engaged in the locking slot of the locking sleeve on the steering spindle, and rests on the circumferential surface thereof. -r.,. 1 ,`t. `. , .'' ` ',' ~ ~
Claims (23)
1. Steering lock with lock cylinder for motor vehicles having a locking bolt spring-loaded in the direction towards the locking position and arresting the steering column, which bolt is displaceable into the unlocked position by a dog arranged on a prolongation of the cylinder core and, after the dog has been moved back, continues to be held in the unlocked position by a blocking part which is arranged between cylinder core and locking bolt and is held in its blocking position by a blocking member which, during the movement of the locking bolt into the unlocked position, runs along a face of the blocking part, while the blocking part yields and snaps into engagement on the blocking member, and the blocking member, after withdrawal of the key, is movable into a position in which it liberates the blocking part, characterized in that the blocking part is a slider which is movable parallel to the longitudinal axis of the locking bolt and is pivotable, for engagement with the blocking member, in a plane perpendicular to the axis of the lock cylinder.
2. Steering lock according to Claim 1, characterized in that for the displacement of the locking bolt by the dog the dog acts not directly upon the locking bolt but on the blocking part and the blocking part bears with a face or edge on the locking bolt.
3. Steering lock according to Claim 2, characterized in that for the generation of a moment on the blocking part oppositely to the direction of pivoting yielding to the blocking member the dog acts on the blocking part at a point which lies outside a plane parallel to the lock cylinder axis and the longitudinal axis of the locking bolt, which plane extends through an abutment point between blocking part and locking bolt.
4. Steering lock according to Claim 3, characterized in that said point of action of the dog on the blocking part lies on the side of said plane on which the blocking member is situated.
5. Steering lock according to Claim 3, characterized in that said point of action of the blocking part on the dog is formed by a protuberance which extends from the blocking part to the lock cylinder.
6. Steering lock according to Claim 5, characterized in that the protuberance is a pin parallel with the lock cylin-der axis or a protruding wall, with edge for the dog parallel to the lock cylinder axis.
7. Steering lock according to Claim 3, characterized in that the abutment face of the locking bolt on the blocking part is formed by a protuberance of which the face coming into abutment with the blocking part extends from the locking bolt to the lock cylinder and to which the longitudinal axis of the locking bolt is a normal.
8. Steering lock according to Claim 7, characterized in that the end face of the blocking part abutting on the lock-ing bolt or a locking bolt protuberance forms an obtuse angle.
9. Steering lock according to Claim 8, characterized in that the apex of said obtuse angle coincides with the point of abutment between said blocking part and said locking bolt.
10. Steering lock according to Claim 9, character-ized in that the protuberance forms a wall which, when the blocking part is not pivoted, lies parallel to and abuts on the abutment face of the locking bolt.
11. Steering lock according to Claim 10, character-ized in that the protuberance is made in angle form.
12. Steering lock according to Claim 1, character-ized in that the blocking part is formed by a plate to the side faces of which the lock cylinder axis stands normal.
13. Steering lock according to Claim 12, character-ized in that the blocking part comprises a longitudinal opening approximately parallel to the longitudinal axis of the locking bolt, in which the cylinder core prolongation lies.
14. Steering lock according to Claim 1, 6 or 7, characterized in that the blocking part snaps with an end corner face behind the blocking member.
15. Steering lock according to Claim 1, 6 or 7, characterized in that the blocking part snaps with an end face behind the blocking member, which face lies opposite to the end face lying on the locking bolt.
16. Steering lock according to Claim 1, 6 or 7, characterized in that the blocking part has on the edge a recess in which the blocking member lies with its blocking end in the disengaged condition.
17. Steering lock according to Claim 1, character-ized in that the blocking member is formed by a two-armed lever articulated to the cylinder housing, which lever is arranged approximately axially parallel with the lock cylinder axis and comes to abut with one end on the blocking part and is actu-atable with the other end by the key.
18. Steering lock according to Claim 17, character-ized in that the end of the lever opposite to the blocking part rests on a slider lying radially in the cylinder core in the vicinity of the key passage opening, which slider reaches into the key passage when the key is withdrawn.
19. Steering lock according to Claim 1, 9 or 13, characterized in that the blocking part consists of synthetic plastics material or of die-cast zinc.
20. Steering lock according to Claim 1, characterized in that a spring which loads the blocking part towards the steering column is arranged between the blocking part and the locking bolt or a protuberance of the locking bolt.
21. Steering lock according to Claim 20, characterized in that the spring is secured to the end face of the blocking part which comes to abut on the locking bolt or the protuberance of the locking bolt.
22. Steering lock according to Claim 20 or 21, characterized in that the spring is a metallic leaf spring secured with one end in the blocking part.
23. Steering lock according to Claim 20 or 21, characterized in that the spring consists of synthetic plastics material and is made in one piece with the blocking part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2947069.7 | 1979-11-22 | ||
| DE2947069A DE2947069C2 (en) | 1979-11-22 | 1979-11-22 | Steering lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1151889A true CA1151889A (en) | 1983-08-16 |
Family
ID=6086615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000364684A Expired CA1151889A (en) | 1979-11-22 | 1980-11-14 | Steering lock |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5682646A (en) |
| AR (1) | AR230308A1 (en) |
| CA (1) | CA1151889A (en) |
| DE (1) | DE2947069C2 (en) |
| ES (1) | ES254859Y (en) |
| FR (1) | FR2470032A1 (en) |
| GB (1) | GB2063985B (en) |
| IT (1) | IT1134406B (en) |
| SE (1) | SE8008078L (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3509834A1 (en) * | 1985-03-19 | 1986-10-02 | Neiman GmbH, 5657 Haan | STEERING LOCK |
| IT1183789B (en) * | 1985-04-02 | 1987-10-22 | Mario Turatti | STEERING LOCK ANTI-THEFT DEVICE FOR VEHICLES |
| FR2591166B1 (en) * | 1985-12-11 | 1988-02-12 | Neiman Sa | KEY PRESENCE SECURITY LOCK |
| FR2952005B1 (en) * | 2009-11-05 | 2016-03-25 | Valeo Securite Habitacle | ANTI-THEFT DEVICE FOR THE STEERING COLUMN OF A SUPER-CONDEMNATION VEHICLE ASSURED BY ROCKER |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1171779B (en) * | 1963-05-08 | 1964-06-04 | Huelsbeck & Fuerst | Ignition lock, especially for motor vehicles |
| FR1392437A (en) * | 1964-05-12 | 1965-03-12 | Voss Kg J | Locking device for the steering shaft, of a motor vehicle, in particular |
| FR1582229A (en) * | 1968-08-02 | 1969-09-26 | ||
| DE2059215C3 (en) * | 1970-12-02 | 1980-11-27 | Huelsbeck & Fuerst, 5620 Velbert | Steering lock for automobiles |
| JPS5034305A (en) * | 1973-07-30 | 1975-04-02 | ||
| US3940958A (en) * | 1973-12-22 | 1976-03-02 | Kabushiki Kaisha Honda Lock | Steering lock for vehicles |
-
1979
- 1979-11-22 DE DE2947069A patent/DE2947069C2/en not_active Expired
-
1980
- 1980-10-24 GB GB8034311A patent/GB2063985B/en not_active Expired
- 1980-11-14 CA CA000364684A patent/CA1151889A/en not_active Expired
- 1980-11-18 SE SE8008078A patent/SE8008078L/en not_active Application Discontinuation
- 1980-11-18 JP JP16147780A patent/JPS5682646A/en active Pending
- 1980-11-19 AR AR283281A patent/AR230308A1/en active
- 1980-11-21 ES ES1980254859U patent/ES254859Y/en not_active Expired
- 1980-11-21 FR FR8024755A patent/FR2470032A1/en active Granted
- 1980-11-21 IT IT26155/80A patent/IT1134406B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| GB2063985A (en) | 1981-06-10 |
| FR2470032B1 (en) | 1982-03-19 |
| FR2470032A1 (en) | 1981-05-29 |
| SE8008078L (en) | 1981-05-23 |
| IT8026155A0 (en) | 1980-11-21 |
| ES254859Y (en) | 1981-10-01 |
| ES254859U (en) | 1981-03-16 |
| GB2063985B (en) | 1983-09-01 |
| AR230308A1 (en) | 1984-03-01 |
| DE2947069A1 (en) | 1981-05-27 |
| JPS5682646A (en) | 1981-07-06 |
| DE2947069C2 (en) | 1983-09-08 |
| IT1134406B (en) | 1986-08-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |