EP0202949A2 - Locking devices and keys for use therewith - Google Patents
Locking devices and keys for use therewith Download PDFInfo
- Publication number
- EP0202949A2 EP0202949A2 EP86303931A EP86303931A EP0202949A2 EP 0202949 A2 EP0202949 A2 EP 0202949A2 EP 86303931 A EP86303931 A EP 86303931A EP 86303931 A EP86303931 A EP 86303931A EP 0202949 A2 EP0202949 A2 EP 0202949A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- keyway
- key
- bore
- blade
- locking device
- 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.)
- Granted
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- 230000037431 insertion Effects 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
- E05B27/0078—Asymmetrical tumbler pins, e.g. with a key operating on a radial protrusion of a tumbler pin
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
- E05B35/003—Locks for use with special keys or a plurality of keys ; keys therefor for keys with movable bits
Definitions
- This invention is concerned with locking devices and keys for use therewith.
- a locking device comprising a lock of the cylinder type wherein the cylinder has a housing in which a cylinder plug is rotatably accommodated, together with a plurality of tumblers, the plug having a profiled keyway into which said tumblers extend in the rest condition of the cylinder, wherein an additional tumbler is provided which is mounted for sliding movement in a bore the longitudinal axis of which is parallel to but offset from the longitudinal central plane of the keyway, and further wherein an abutment is also provided in the keyway in the region of the additional tumbler but spaced therefrom, the locking device being adapted for use with a key having a profiled blade corresponding to the keyway and having mounted in the blade, for sliding transverse movement therein, a control element which is urged by engagement of one end portion thereof with the abutment into a condition in which an opposite end portion thereof projects outwardly from the key blade, said projecting end portion serving to operate the additional tumbler.
- the additional tumbler (in fact in this case there are two) is movable in its bore through a distance which cannot exceed the heightwise dimension of the control element of the key and indeed in the particular case is movable through a stroke which is substantially smaller than such dimension.
- some form of camming surface or run-up slope has to be provided on the control member and clearly the heightwise distance over which such run-up slope extends cannot exceed the overall height of the control element. What is more, the run-up slope may not exceed a certain angle of inclination if jamming of the key during insertion is to be avoided.
- a key. comprising a longitudinal groove along one wide face of the key blade.
- the control element has to be formed as large as possible while the additional tumbler(s) have a diameter as small as possible so as to be accommodated within the lengthwise surface of the control element provided adjacent the run-up slope.
- To form the additional tumbler thin is disadvantageous in that it affords a weak locking function.
- this object is resolved, in a locking device as set out in the first paragraph above, in that the end portion, engageable by the control element of the key, of the additional tumbler is elongated in a direction extending lengthwise of the keyway and has a run-up slope extending in said direction. It will be appreciated that, by so dimensioning the end portion of the additional tumbler, the additional tumbler can be displaced through a larger distance than was previously the case and further a tumbler of a much more substantial construction than was previously the case can be afforded.
- the additional tumbler is located in the floor of the keyway, so that the construction of the keyway becomes relatively complicated in terms of its machining and would be especially so e.g. in the case of a so-called double entry cylinder.
- the bore in which the additional tumbler is accommodated opens into a side wall of the keyway and the abutment is provided on an opposite wall of the keyway, the run-up slope being disposed in the open region of the bore, when the additional tumbler is in its rest condition. A more convenient construction is afforded.
- the requirements for the shaping of the control element of the key are rendered less demanding by this arrangement, in particular since in the earlier case the control element, though moved transversely of the key blank by the abutment, nevertheless was required to operate tumblers lying in the floor of the keyway, in the present case the arrangement of the bore opening into the side wall enables the transversely moved control element to act directly on the additional tumbler, the run-up slope of which is positioned at or substantially at the same level as the abutment.
- abutment was so arranged along the keyway in relation to the run-up slope (in this case provided on the control element) that the control element was caused to project outwardly by its engagement with the abutment prior to engagement of the run-up slope.
- a recess is provided in said side wall and runs into the open region of the bore and is arranged opposite the abutment for receiving the outwardly projecting end portion of the control element of the key prior to its engaging the run-up slope.
- the additional tumbler has a stem and an enlarged head which provides the elongated end portion thereof.
- the lengthwise and heightwise dimensions of the head determine the heightwise dimension of the run-up slope, so that by varying the dimensions of the head the dimension of the slope can also be varied, within only the constraints set down by the overall dimensions of the cylinder and the arrangement of tumblers therein.
- a further advantage of the provision of a headed additional tumbler resides in that the additional tumbler can be held against rotation by the head being offset in relation to the axis of the stem and the stem being mounted for sliding movement in a bore portion in the cylinder plug, the axis of which bore portion is offset in relation to that of a further bore portion in which the head is accommodated for sliding movement. In this way, in a straight forward manner the orientation of the run-up slope is fixed. Furthermore, a constructional advantage is achieved in that the side of the head of the additional tumbler is flatted adjacent the run-up slope, the flatted surface thereof lying flush with the side wall of the keyway.
- the keyway is rendered complicated by the need to effect transverse movement of the control element.
- the abutment is provided by an insert set in the cylinder plug and projecting into the keyway thereof, the projecting portion being formed with an inclined slope in the direction of key insertion.
- a further advantage of the locking device in accordance with the present invention can also be achieved by the provision of a further abutment in the cylinder plug by which the rest position of the additional tumbler is determined. Furthermore for cooperating with such further abutment conveniently a projection is formed on the additional tumbler, extending beyond the run-up slope thereof. By the provision of the further abutment and the projection, the initial position of the additional tumbler can readily be determined in relation to the position of the control element of the key when inserted in the keyway.
- a significant advantage of the key of the present invention resides in that, because the control element is in the form of a relatively small pin, the handling of the key by the user becomes more comodious and in particular the key does not exhibit projections of the type of the key of the earlier case, which projections are likely to snag in the users pocket or with the users apparel when being carried or handled by the user.
- the length of the pin does not exceed the transverse dimension of the key blade, it is of course desirable to ensure, without interference from the user, that the pin does not project as the key is being inserted.
- the entry end of the keyway is provided with lead-in surfaces by which the control element is centralised in the key blade as the key is inserted in the keyway.
- the present invention also provides a key blank comprising a blade having a longitudinal groove formed therein into which a bore, extending through the transverse width of the blade, opens, in which bore a control element is accommodated for transverse movement such that, when one portion of the element is moved flush with the surface of one side of the blade adjacent the bore, an opposite portion of the element projects outwardly beyond the surface of the other side of the blade adjacent the bore, the bore has a portion of enlarged diameter and the control element is in the form of a pin having a collar freely movable in said portion of enlarged diameter between an end surface of said portion and a retaining ring arranged in the open end of the bore, and further in that the length of the pin does not exceed the overall transverse dimension of the blade but is such that, when the opposite end portion thereof is caused to project outwardly as aforesaid, it extends beyond the outside dimension of the key blade.
- the lock cylinder has a profiled lock cylinder housing 1, in which a cylinder plug 3 is rotatably mounted in a longitudinal bore 2.
- the plug 3 is non-rotatably secured to a thrower ring 5 having a thrower 4.
- lock cylinder housing 1 and the cylinder plug 3 are provided, in the longitudinal central plane of the lock cylinder, bores 6,7 which lie in alignment with one another and which receive tumblers 8 comprising plug pins 8' and housing pins (or drivers) 8".
- the housing pins are urged outwardly towards the pins 8' by compression springs 9.
- a keyway 10 of profiled cross-section extends in the plug 3 in the axial longitudinal direction thereof.
- the keyway 10 is adapted to the cross-section of the key blade 11 of a flat key 12.
- the one narrow edge of the key blade 11 is provided with a row of V-cuts 13 of different depths, which cooperate with the tumbler pins 8 and operate them, when the key is inserted, so that the joint line between the plug pins 8' and housing pins 8" lies at the level of the plug rotation line F (see Fig. 6).
- the key blade 11 has profiled longitudinal grooves on both wide sides, corresponding to the transverse profiling of the keyway.
- a counter-sunk recess 15 extends from the bottom of a central one of the profiled longitudinal grooves 14, which is wider than the other grooves, and extends almost up to the opposite wide side of the key.
- At the bottom 16 of the countersink is a central bore 17 through which the control element 18 in the form of a pin extends.
- a retaining ring 19 is disposed at the open end of the recess 15 and serves to guide the control pin 18.
- the control pin 18 is restrained in the transverse direction by a central collar 20, which fixedly projects from the control element and is freely movable between the annular area of countersink bottom 16 and the retaining ring 19. The latter is pressed into the key blade and thus ensures the non-releasable mounting of the control element 18.
- the length of the control element 18 corresponds to the transverse dimension, i.e. thickness of the key blade 11 (see especially Fig
- an additional tumbler 21 which is movable in a bore 22 opening into one side of the keyway 10 and extending parallel to the key insertion plane.
- the additional tumbler 21 comprises a stem 23 and head 24, the latter being axially offset from the stem 23.
- the centre point M of the stem 23 is thus at a greater distance from the keyway than the centre point M 1 of the head 24.
- the additional tumbler 21 is secured against rotation by guiding the stem 23 in a bore section 22', which is axially offset from a bore section 22'' of larger cross-section in which the head 24 is movable.
- the head is flatted on the side facing the keyway 10 so as to lie flush with the side wall 10' of the keyway.
- a run-up slope 26 Adjacent the flatted surface is formed a run-up slope 26 which extends up to a side wall portion 25 of the head.
- the run-up slope 26 increases in the direction of key insertion.
- a projection or spigot 34 projects from the head 24 in opposed relationship with the stem 23 and cooperates with a stroke-limiting abutment in the form of a pin 35 in-set in the outer surface of the cylinder plug 3.
- the cylinder plug 3 has a groove 36 intersecting the bore 22 and running in the longitudinal direction of the cylinder plug 3, the depth of the groove corresponding approximately to the diameter of the stroke-limiting pin 35. Lateral recesses 37 in the groove 36 ensure the correct location of the stroke-limiting pin 35.
- the stem 23 of the additional tumbler 21 cooperates with a housing tumbler 29, which is guided in a bore 28 of the lock cylinder housing 1.
- the tumbler 29 is secured against rotation as a consequence of its being offset from the longitudinal central plane of the lock cylinder.
- This tumbler 29 is also acted upon by a compression spring (not shown) so that, when the key is withdrawn, the position as shown in Fig. 3 pertains, wherein the tumbler 29 projects with its end facing the cylinder plug into the bore section 22', brings the tumbler 21 into abutment with the stroke-limiting pin 35, and provided additional security against rotation.
- a slot 30 which lies transversely of the keyway and into which an abutment in the form of an insert 31 is fixedly inserted.
- the end of this insert 31 projects into the keyway beyond the corresponding side wall 10" of the keyway.
- the edge projecting into the keyway 10 provides a surface 32 for actuating the control element 18, the side of said surface 32 facing the keyway insertion direction forming a roof-shaped slope 33. This surface lies at the level of the profiled longitudinal groove 14 of the key and projects thereinto when the key is inserted.
- the distance x between the side wall 25 of the head 24 and the opposite surface 32 of the insert 31 corresponds to the amount y of the dimension extending transversely of the key 12.
- the entry area of the keyway 10 is provided with funnel-shaped tapering guide surfaces 34 which guide the control element 18, if projecting, into the keyway.
- the mode of operation is as follows: When the flat key 12 is inserted into the keyway 10, its V-cuts 13 operate the tumbler pins 8.
- the control element 18 is guided through the keyway (see chain dotted illustration in Fig. 5).
- the control element 18 Upon engagement of one end portion of the pin 18 with the roof-shaped slope 33 of the insert 31, the control element 18 is shifted transversely in the direction of the run-up slope 26 of the additional tumbler 21.
- the recess 27 disposed in front of slope 33 receives the opposite end portion of the pin 18 during this transverse motion, so that the control element 18 reaches the chain-dotted position in accordance with Fig. 4, but at this stage no shifting of the additional tumbler 21 has taken place. This position corresponds to the end position of the transverse displacement of the control element 18.
- the diameter of the projecting end portion of the pin 18 is substantially less than the lengthwise dimension of the run-up 26 formed on the additional tumbler 21 (see e.g. Fig. 7), while the amount by which said projecting end portion projects beyond the wide face of the key 12 is not greater than the transverse dimension of said run-up slope 26 (see e.g. Fig. 6) .
- the key 12 is made from a key blank exhibiting the longitudinal grooves and the bore with the pin 18 held captive therein as aforesaid.
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- Lock And Its Accessories (AREA)
- Transmitters (AREA)
Abstract
Description
- This invention is concerned with locking devices and keys for use therewith.
- There is described in DE-A 3424307 a locking device comprising a lock of the cylinder type wherein the cylinder has a housing in which a cylinder plug is rotatably accommodated, together with a plurality of tumblers, the plug having a profiled keyway into which said tumblers extend in the rest condition of the cylinder, wherein an additional tumbler is provided which is mounted for sliding movement in a bore the longitudinal axis of which is parallel to but offset from the longitudinal central plane of the keyway, and further wherein an abutment is also provided in the keyway in the region of the additional tumbler but spaced therefrom, the locking device being adapted for use with a key having a profiled blade corresponding to the keyway and having mounted in the blade, for sliding transverse movement therein, a control element which is urged by engagement of one end portion thereof with the abutment into a condition in which an opposite end portion thereof projects outwardly from the key blade, said projecting end portion serving to operate the additional tumbler.
- The additional tumbler (in fact in this case there are two) is movable in its bore through a distance which cannot exceed the heightwise dimension of the control element of the key and indeed in the particular case is movable through a stroke which is substantially smaller than such dimension. In this regard, it has to be considered that for moving the tumbler some form of camming surface or run-up slope has to be provided on the control member and clearly the heightwise distance over which such run-up slope extends cannot exceed the overall height of the control element. What is more, the run-up slope may not exceed a certain angle of inclination if jamming of the key during insertion is to be avoided.
- In the aforementioned specification, therefore, a key.is provided comprising a longitudinal groove along one wide face of the key blade.
- More particularly, in order to enhance the stroke through which the additional tumbler is moved, the control element has to be formed as large as possible while the additional tumbler(s) have a diameter as small as possible so as to be accommodated within the lengthwise surface of the control element provided adjacent the run-up slope. To form the additional tumbler thin, however, is disadvantageous in that it affords a weak locking function.
- It is thus an object of the present invention to provide an improved locking device wherein the dimensional disadvantages of the aforementioned disclosure are avoided.
- In accordance with the present invention, therefore, this object is resolved, in a locking device as set out in the first paragraph above, in that the end portion, engageable by the control element of the key, of the additional tumbler is elongated in a direction extending lengthwise of the keyway and has a run-up slope extending in said direction. It will be appreciated that, by so dimensioning the end portion of the additional tumbler, the additional tumbler can be displaced through a larger distance than was previously the case and further a tumbler of a much more substantial construction than was previously the case can be afforded.
- In the locking device of the aforementioned specification, the additional tumbler is located in the floor of the keyway, so that the construction of the keyway becomes relatively complicated in terms of its machining and would be especially so e.g. in the case of a so-called double entry cylinder. In the device according to the present invention, on the other hand, preferably the bore in which the additional tumbler is accommodated opens into a side wall of the keyway and the abutment is provided on an opposite wall of the keyway, the run-up slope being disposed in the open region of the bore, when the additional tumbler is in its rest condition. A more convenient construction is afforded. Furthermore, the requirements for the shaping of the control element of the key are rendered less demanding by this arrangement, in particular since in the earlier case the control element, though moved transversely of the key blank by the abutment, nevertheless was required to operate tumblers lying in the floor of the keyway, in the present case the arrangement of the bore opening into the side wall enables the transversely moved control element to act directly on the additional tumbler, the run-up slope of which is positioned at or substantially at the same level as the abutment.
- In order readily to accommodated the transverse movement of the control element, in the earlier case the abutment was so arranged along the keyway in relation to the run-up slope (in this case provided on the control element) that the control element was caused to project outwardly by its engagement with the abutment prior to engagement of the run-up slope. In order to accommodate such prior transverse movement in the locking device in accordance with the present invention, preferably a recess is provided in said side wall and runs into the open region of the bore and is arranged opposite the abutment for receiving the outwardly projecting end portion of the control element of the key prior to its engaging the run-up slope.
- In a preferred embodiment the additional tumbler has a stem and an enlarged head which provides the elongated end portion thereof. In this way, the lengthwise and heightwise dimensions of the head determine the heightwise dimension of the run-up slope, so that by varying the dimensions of the head the dimension of the slope can also be varied, within only the constraints set down by the overall dimensions of the cylinder and the arrangement of tumblers therein.
- A further advantage of the provision of a headed additional tumbler resides in that the additional tumbler can be held against rotation by the head being offset in relation to the axis of the stem and the stem being mounted for sliding movement in a bore portion in the cylinder plug, the axis of which bore portion is offset in relation to that of a further bore portion in which the head is accommodated for sliding movement. In this way, in a straight forward manner the orientation of the run-up slope is fixed. Furthermore, a constructional advantage is achieved in that the side of the head of the additional tumbler is flatted adjacent the run-up slope, the flatted surface thereof lying flush with the side wall of the keyway.
- As referred to above, in the device disclosed in DE-A 3424307 the keyway is rendered complicated by the need to effect transverse movement of the control element. In the present invention, by contrast, conveniently the abutment is provided by an insert set in the cylinder plug and projecting into the keyway thereof, the projecting portion being formed with an inclined slope in the direction of key insertion.
- A further advantage of the locking device in accordance with the present invention can also be achieved by the provision of a further abutment in the cylinder plug by which the rest position of the additional tumbler is determined. Furthermore for cooperating with such further abutment conveniently a projection is formed on the additional tumbler, extending beyond the run-up slope thereof. By the provision of the further abutment and the projection, the initial position of the additional tumbler can readily be determined in relation to the position of the control element of the key when inserted in the keyway.
- It is a further object of the present invention to provide an improved key for use with a locking device as set out hereinbefore, which key is of simpler construction, requiring less customised parts, than was the case of the key in accordance with DE-A 3424307.
- In accordance with the present invention, therefore, in a key as set out in the last paragraph but
- , the bore has a portion of enlarged diameter and the control element is in the form of a pin disposed in said bore and having a collar freely movable in the enlarged diameter portion thereof between an end face forming the bottom of said portion and a retaining ring arranged at the open end of the bore.
- It will be appreciated that in comparison with the key of the earlier case, a simple pin is now sufficient to actuate the additional tumbler, the pin being of course provided with a collar, which may be integral with the pin, by which, in combination with the bottom of the enlarged bore portion and the retaining ring, the pin is held captive in the bore.
- Moreover, in such a key it is now possible, by the provision of a longitudinal groove along one of the wide faces of the key blade, to provide a pin which does not exceed the transverse dimension of the key blade, this being achieved in that the bore opens into the groove and further in that the length of the pin, while it does not exceed the transverse dimension of the key blade, is such that, when the opposite end portion thereof is caused to project outwardly as aforesaid, it extends beyond the outside dimension of the key.
- A significant advantage of the key of the present invention resides in that, because the control element is in the form of a relatively small pin, the handling of the key by the user becomes more comodious and in particular the key does not exhibit projections of the type of the key of the earlier case, which projections are likely to snag in the users pocket or with the users apparel when being carried or handled by the user.
- It will thus be appreciated that in accordance with the present invention, a significant advantage is achieved by the combination of the locking device with the key referred to above in that the dimension of the end portion of the additional tumbler in a direction extending lengthwise of the keyway is large in comparison with the corresponding dimension of the outwardly projecting end portion of the control element engaging it, and further in that said end portion of the additional tumbler has the run-up slope which extends in said direction extending lengthwise with the keyway.
- Where, in a combination of locking device and key as aforementioned, the length of the pin does not exceed the transverse dimension of the key blade, it is of course desirable to ensure, without interference from the user, that the pin does not project as the key is being inserted. To this end, therefore, in accordance with the present invention, preferably the entry end of the keyway is provided with lead-in surfaces by which the control element is centralised in the key blade as the key is inserted in the keyway.
- As a further one of its several aspects, the present invention also provides a key blank comprising a blade having a longitudinal groove formed therein into which a bore, extending through the transverse width of the blade, opens, in which bore a control element is accommodated for transverse movement such that, when one portion of the element is moved flush with the surface of one side of the blade adjacent the bore, an opposite portion of the element projects outwardly beyond the surface of the other side of the blade adjacent the bore, the bore has a portion of enlarged diameter and the control element is in the form of a pin having a collar freely movable in said portion of enlarged diameter between an end surface of said portion and a retaining ring arranged in the open end of the bore, and further in that the length of the pin does not exceed the overall transverse dimension of the blade but is such that, when the opposite end portion thereof is caused to project outwardly as aforesaid, it extends beyond the outside dimension of the key blade.
- There now follows a detailed description, to be read with reference to the accompanying drawings, of a locking device and a key in accordance with the present invention. It will be appreciated that the locking device and key and the combination thereof have been selected for description merely to illustrate the invention by way of non-limiting example.
- In the accompanying drawings:-
- Fig. 1 is a view of the blade end of a flat key before insertion into a lock cylinder shown in elevation;
- Fig. 2 is a horizontal section, on a very enlarged scale, through the lock cylinder housing and the associated key blade in the region of the control element before the key has been inserted into the hole;
- Fig. 3 is a cross-section, along offset planes, through the lock cylinder when the key is not inserted;
- Fig. 4 is a partial longitudinal section through the lock cylinder in the region of the additional tumbler;
- Fig. 5 is a cross-section corresponding to Fig. 2, but with the key inserted;
- Fig. 6 is a cross-section corresponding to Fig. 3, likewise with the key inserted;
- Fig. 7 is an illustration corresponding to Fig. 4, wherein the additional tumbler is moved by the control pin when the key is inserted; and
- Fig. 8 is a view in perspective, on a very enlarged scale, of the additional tumbler with the control element shown in chain-dot.
- The lock cylinder has a profiled
lock cylinder housing 1, in which acylinder plug 3 is rotatably mounted in alongitudinal bore 2. Theplug 3 is non-rotatably secured to athrower ring 5 having athrower 4. - In the
lock cylinder housing 1 and thecylinder plug 3 are provided, in the longitudinal central plane of the lock cylinder, bores 6,7 which lie in alignment with one another and which receivetumblers 8 comprising plug pins 8' and housing pins (or drivers) 8". The housing pins are urged outwardly towards the pins 8' by compression springs 9. - A
keyway 10 of profiled cross-section extends in theplug 3 in the axial longitudinal direction thereof. Thekeyway 10 is adapted to the cross-section of thekey blade 11 of aflat key 12. The one narrow edge of thekey blade 11 is provided with a row of V-cuts 13 of different depths, which cooperate with thetumbler pins 8 and operate them, when the key is inserted, so that the joint line between the plug pins 8' andhousing pins 8" lies at the level of the plug rotation line F (see Fig. 6). - The
key blade 11 has profiled longitudinal grooves on both wide sides, corresponding to the transverse profiling of the keyway. Acounter-sunk recess 15 extends from the bottom of a central one of the profiledlongitudinal grooves 14, which is wider than the other grooves, and extends almost up to the opposite wide side of the key. At thebottom 16 of the countersink is acentral bore 17 through which thecontrol element 18 in the form of a pin extends. Aretaining ring 19 is disposed at the open end of therecess 15 and serves to guide thecontrol pin 18. Thecontrol pin 18 is restrained in the transverse direction by acentral collar 20, which fixedly projects from the control element and is freely movable between the annular area ofcountersink bottom 16 and theretaining ring 19. The latter is pressed into the key blade and thus ensures the non-releasable mounting of thecontrol element 18. The length of thecontrol element 18 corresponds to the transverse dimension, i.e. thickness of the key blade 11 (see especially Fig. 2). - In a region between two
tumbler pins 8 extends anadditional tumbler 21 which is movable in abore 22 opening into one side of thekeyway 10 and extending parallel to the key insertion plane. More particularly, theadditional tumbler 21 comprises astem 23 andhead 24, the latter being axially offset from thestem 23. The centre point M of thestem 23 is thus at a greater distance from the keyway than thecentre point M 1 of thehead 24. Theadditional tumbler 21 is secured against rotation by guiding thestem 23 in a bore section 22', which is axially offset from a bore section 22'' of larger cross-section in which thehead 24 is movable. The head is flatted on the side facing thekeyway 10 so as to lie flush with the side wall 10' of the keyway. Adjacent the flatted surface is formed a run-up slope 26 which extends up to aside wall portion 25 of the head. The run-up slope 26 increases in the direction of key insertion. Adjacent thebore 22, at the key entry side thereof, and running thereinto, is formed arecess 27 extending into the side wall 10' of the keyway. A projection orspigot 34 projects from thehead 24 in opposed relationship with thestem 23 and cooperates with a stroke-limiting abutment in the form of apin 35 in-set in the outer surface of thecylinder plug 3. To this end, thecylinder plug 3 has agroove 36 intersecting thebore 22 and running in the longitudinal direction of thecylinder plug 3, the depth of the groove corresponding approximately to the diameter of the stroke-limitingpin 35. Lateral recesses 37 in thegroove 36 ensure the correct location of the stroke-limitingpin 35. - The
stem 23 of theadditional tumbler 21 cooperates with ahousing tumbler 29, which is guided in abore 28 of thelock cylinder housing 1. Thetumbler 29 is secured against rotation as a consequence of its being offset from the longitudinal central plane of the lock cylinder. Thistumbler 29 is also acted upon by a compression spring (not shown) so that, when the key is withdrawn, the position as shown in Fig. 3 pertains, wherein thetumbler 29 projects with its end facing the cylinder plug into the bore section 22', brings thetumbler 21 into abutment with the stroke-limitingpin 35, and provided additional security against rotation. - In opposed relationship with the
head 24 there extends on the other side of the keyway 10 aslot 30 which lies transversely of the keyway and into which an abutment in the form of aninsert 31 is fixedly inserted. The end of thisinsert 31 projects into the keyway beyond thecorresponding side wall 10" of the keyway. The edge projecting into thekeyway 10 provides asurface 32 for actuating thecontrol element 18, the side of saidsurface 32 facing the keyway insertion direction forming a roof-shapedslope 33. This surface lies at the level of the profiledlongitudinal groove 14 of the key and projects thereinto when the key is inserted. - The distance x between the
side wall 25 of thehead 24 and theopposite surface 32 of theinsert 31 corresponds to the amount y of the dimension extending transversely of the key 12. - The entry area of the
keyway 10 is provided with funnel-shaped tapering guide surfaces 34 which guide thecontrol element 18, if projecting, into the keyway. - The mode of operation is as follows: When the
flat key 12 is inserted into thekeyway 10, its V-cuts 13 operate the tumbler pins 8. Thecontrol element 18 is guided through the keyway (see chain dotted illustration in Fig. 5). Upon engagement of one end portion of thepin 18 with the roof-shapedslope 33 of theinsert 31, thecontrol element 18 is shifted transversely in the direction of the run-up slope 26 of theadditional tumbler 21. Therecess 27 disposed in front ofslope 33 receives the opposite end portion of thepin 18 during this transverse motion, so that thecontrol element 18 reaches the chain-dotted position in accordance with Fig. 4, but at this stage no shifting of theadditional tumbler 21 has taken place. This position corresponds to the end position of the transverse displacement of thecontrol element 18. When the key is inserted further, the run-up slope 26 is engaged by the end portion of thecontrol element 18 which projects beyond the wide side of the key, and a corresponding downward displacement of the additional tumbler takes place. This downward motion ends when the key has been completely inserted. At this stage thecontrol element 18 is then disposed with its projecting end on the end face of thehead 24, thestem 23 thereof has forced thehousing tumbler 29 out of thecylinder plug 3, and the joint line between theadditional tumbler 21 and thehousing tumbler 29 lies on the plug rotation line, as do also the joint lines between theother tumblers 8 in the longitudinal central plane. Thecylinder plug 3 can then be rotated by means of theflat key 12. After the key has been withdrawn, all the tumblers return to their initial position shown in Fig. 3, thus preventing a rotating movement of theplug 3 inside thelock cylinder housing 1. - It will be appreciated that the diameter of the projecting end portion of the
pin 18 is substantially less than the lengthwise dimension of the run-up 26 formed on the additional tumbler 21 (see e.g. Fig. 7), while the amount by which said projecting end portion projects beyond the wide face of the key 12 is not greater than the transverse dimension of said run-up slope 26 (see e.g. Fig. 6) . - It will also be appreciated that the key 12 is made from a key blank exhibiting the longitudinal grooves and the bore with the
pin 18 held captive therein as aforesaid.
Claims (15)
in that the length of the control element (18) does not exceed the overall transverse dimension (y) of the key blade (11),
and further in that the entry end (34) of the keyway (10) is provided with lead-in surfaces (34) by which the control element (18) is centralised in the key blade (11) as the key (12) is inserted in the keyway (10).
and in that the run-up slope (26) of the additional tumbler (21) is bounded at its edge remote from the keyway (10) by a side wall portion (25),-the distance (x) between which and the operative surface of the abutment (32) is equal to the transverse dimension (y) of the key blade (11).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86303931T ATE64980T1 (en) | 1985-05-24 | 1986-05-23 | LOCK AND KEY. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853518743 DE3518743A1 (en) | 1985-05-24 | 1985-05-24 | LOCKING CYLINDER AND FLAT KEY |
DE3518743 | 1985-05-24 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90123201.7 Division-Into | 1986-05-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0202949A2 true EP0202949A2 (en) | 1986-11-26 |
EP0202949A3 EP0202949A3 (en) | 1988-01-20 |
EP0202949B1 EP0202949B1 (en) | 1991-07-03 |
Family
ID=6271573
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86303931A Expired - Lifetime EP0202949B1 (en) | 1985-05-24 | 1986-05-23 | Locking devices and keys for use therewith |
EP90123201A Withdrawn EP0431550A1 (en) | 1985-05-24 | 1986-05-23 | Key |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90123201A Withdrawn EP0431550A1 (en) | 1985-05-24 | 1986-05-23 | Key |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP0202949B1 (en) |
AT (1) | ATE64980T1 (en) |
DE (2) | DE3518743A1 (en) |
ES (1) | ES294528Y (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0237172A2 (en) * | 1986-02-06 | 1987-09-16 | DOM-Sicherheitstechnik GmbH & Co. KG | Locking device consisting of a locking cylinder and associated flat key |
GB2230555A (en) * | 1989-03-31 | 1990-10-24 | Folger Adam Co | Cylinder locks |
EP0431550A1 (en) | 1985-05-24 | 1991-06-12 | DOM-Sicherheitstechnik GmbH & Co. KG | Key |
FR2656027A1 (en) * | 1989-12-15 | 1991-06-21 | Bauer Kaba Ag | LOCK BARREL AND KEY AND KEY HANDLE HAVING A SECURITY ELEMENT DETERMINED ON THE ONE BASED ON THE OTHER. |
EP0436496A1 (en) * | 1990-01-05 | 1991-07-10 | BKS GmbH | Key for lock cylinder, especially of lock systems |
US5079936A (en) * | 1989-03-31 | 1992-01-14 | Folger Adam Company | High security cylinder lock |
EP0621384A1 (en) * | 1993-03-30 | 1994-10-26 | Ernst Keller | Key and cylinder for a safety lock |
WO2021067837A1 (en) * | 2019-10-03 | 2021-04-08 | Assa Abloy High Security Group Inc. | Key blank with movable element, corresponding key and corresponding lock plug and lock assembly |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL104349A (en) * | 1993-01-08 | 1997-01-10 | Mul T Lock Ltd | Locking apparatus |
FR2704893B1 (en) * | 1993-05-05 | 1995-08-11 | Tesa | Safety lock and open key for such a lock. |
AT1147U1 (en) * | 1996-01-10 | 1996-11-25 | Grundmann Schliesstechnik | LOCKING CYLINDER AND OR FLAT KEY |
DE19607581C2 (en) * | 1996-02-29 | 2000-03-23 | Schliesanlagen Gmbh Pfaffenhai | Locking device |
ES2138488B1 (en) * | 1996-04-18 | 2000-05-16 | Talleres Escoriaza Sa | IRREPRODUCIBLE KEY SYSTEM AND COMBINATION CYLINDER FOR THE SAME. |
US6257033B1 (en) * | 1999-03-08 | 2001-07-10 | Moshe Dolev | Cylinder lock with rotatable pins |
DE10058590C1 (en) * | 2000-11-25 | 2002-07-25 | Dom Sicherheitstechnik | Key and associated locking cylinder |
ITMI20020045A1 (en) * | 2002-01-11 | 2003-07-11 | Mg Serrature S P A | HIGH SECURITY CLOSING AND UNLOCKING PROCEDURE |
DE10324205B3 (en) * | 2003-05-28 | 2004-10-21 | Dom-Sicherheitstechnik Gmbh & Co. Kg | Cylinder for a lock comprises a key with a highly profiled rib having control tracks arranged next to each other in the key insertion direction |
US6983630B2 (en) | 2003-07-09 | 2006-01-10 | Kaba Ilco Corp. | Programmable cylinder lock system |
DE102006000122A1 (en) | 2006-03-17 | 2007-09-20 | Aug. Winkhaus Gmbh & Co. Kg | Key for a lock cylinder and lock cylinder for such a key |
US8550120B2 (en) | 2007-05-02 | 2013-10-08 | Ramot At Tel-Aviv University Ltd. | Apparatus and method for oscillating fluid jets |
ITBO20120662A1 (en) | 2012-12-10 | 2014-06-11 | Filippo Bastianini | LOCK WITH MECHANICALLY REPROGRAMMABLE DISK LOCK AND KEY FOR THE SAME |
ITBO20130122A1 (en) | 2013-03-22 | 2014-09-23 | Filippo Bastianini | SECURITY LOCK AND KEY FOR THE SAME |
WO2015001559A1 (en) * | 2013-07-03 | 2015-01-08 | Smarter Place Technologies Ltd. | Key blank and lock |
US9359793B2 (en) * | 2013-10-03 | 2016-06-07 | Medeco Security Locks, Inc. | Cylinder lock with internal slider and key therefore |
DE102014005431B4 (en) * | 2014-04-08 | 2016-10-27 | Assa Abloy Sicherheitstechnik Gmbh | Lock and key system |
DE102016102288A1 (en) | 2016-02-10 | 2017-08-10 | Dom Sicherheitstechnik Gmbh & Co. Kg | Key for a lock cylinder, lock cylinder and locking device |
IT201700122954A1 (en) * | 2017-10-30 | 2019-04-30 | Fabio Visentin | DOUBLE SPRING RADIAL CYLINDER |
FI130769B1 (en) * | 2023-03-02 | 2024-03-07 | Abloy Oy | Cylinder lock and key combination |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2492872A1 (en) * | 1980-08-13 | 1982-04-30 | Vachette Sa | Key for barrel lock - has ball bearings laterally displaced by pins on insertion into lock to move locking pistons |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2947402A1 (en) * | 1979-11-24 | 1981-05-27 | DOM-Sicherheitstechnik GmbH & Co KG, 5040 Brühl | FLAT KEY FOR CYLINDLE LOCK |
AT385077B (en) * | 1983-06-30 | 1988-02-10 | Grundmann Gmbh Geb | KEY-LOCK COMBINATION ON A CYLINDLE LOCK BASE |
DE3518743A1 (en) | 1985-05-24 | 1986-11-27 | DOM-Sicherheitstechnik GmbH & Co KG, 5040 Brühl | LOCKING CYLINDER AND FLAT KEY |
-
1985
- 1985-05-24 DE DE19853518743 patent/DE3518743A1/en active Granted
-
1986
- 1986-05-23 EP EP86303931A patent/EP0202949B1/en not_active Expired - Lifetime
- 1986-05-23 EP EP90123201A patent/EP0431550A1/en not_active Withdrawn
- 1986-05-23 ES ES1986294528U patent/ES294528Y/en not_active Expired
- 1986-05-23 DE DE8686303931T patent/DE3680027D1/en not_active Expired - Fee Related
- 1986-05-23 AT AT86303931T patent/ATE64980T1/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2492872A1 (en) * | 1980-08-13 | 1982-04-30 | Vachette Sa | Key for barrel lock - has ball bearings laterally displaced by pins on insertion into lock to move locking pistons |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0431550A1 (en) | 1985-05-24 | 1991-06-12 | DOM-Sicherheitstechnik GmbH & Co. KG | Key |
EP0237172A3 (en) * | 1986-02-06 | 1988-01-07 | Dom-Sicherheitstechnik Gmbh & Co. Kg | Locking device consisting of a locking cylinder and associated flat key |
EP0237172A2 (en) * | 1986-02-06 | 1987-09-16 | DOM-Sicherheitstechnik GmbH & Co. KG | Locking device consisting of a locking cylinder and associated flat key |
US5079936A (en) * | 1989-03-31 | 1992-01-14 | Folger Adam Company | High security cylinder lock |
GB2230555A (en) * | 1989-03-31 | 1990-10-24 | Folger Adam Co | Cylinder locks |
GB2230555B (en) * | 1989-03-31 | 1993-08-11 | Folger Adam Co | Cylinder locks |
FR2656027A1 (en) * | 1989-12-15 | 1991-06-21 | Bauer Kaba Ag | LOCK BARREL AND KEY AND KEY HANDLE HAVING A SECURITY ELEMENT DETERMINED ON THE ONE BASED ON THE OTHER. |
BE1003468A5 (en) * | 1989-12-15 | 1992-03-31 | Bauer Kaba Ag | CLOSING CYLINDER AND KEY AS WELL AS A DRAFT KEY WITH COORDINATED SECURITY ELEMENT. |
US5438857A (en) * | 1989-12-15 | 1995-08-08 | Bauer Kaba Ag | Lock cylinder and key as well as key blank with matched security device |
EP0436496A1 (en) * | 1990-01-05 | 1991-07-10 | BKS GmbH | Key for lock cylinder, especially of lock systems |
EP0621384A1 (en) * | 1993-03-30 | 1994-10-26 | Ernst Keller | Key and cylinder for a safety lock |
US5457974A (en) * | 1993-03-30 | 1995-10-17 | Keller; Ernst | Key and rotary locking cylinder for a safety lock |
WO2021067837A1 (en) * | 2019-10-03 | 2021-04-08 | Assa Abloy High Security Group Inc. | Key blank with movable element, corresponding key and corresponding lock plug and lock assembly |
US11280111B2 (en) | 2019-10-03 | 2022-03-22 | Assa Abloy High Security Group Inc. | Operating a lock cylinder with multiple, supplemental locking elements |
US11624206B2 (en) | 2019-10-03 | 2023-04-11 | Assa Abloy High Security Group Inc. | Lock cylinder and key with multiple, supplemental locking elements |
Also Published As
Publication number | Publication date |
---|---|
EP0202949A3 (en) | 1988-01-20 |
ES294528U (en) | 1987-01-01 |
EP0202949B1 (en) | 1991-07-03 |
EP0431550A1 (en) | 1991-06-12 |
DE3518743A1 (en) | 1986-11-27 |
DE3680027D1 (en) | 1991-08-08 |
DE3518743C2 (en) | 1987-08-27 |
ES294528Y (en) | 1987-08-16 |
ATE64980T1 (en) | 1991-07-15 |
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