EP3578742B1 - Cylinder lock - Google Patents
Cylinder lock Download PDFInfo
- Publication number
- EP3578742B1 EP3578742B1 EP18175813.7A EP18175813A EP3578742B1 EP 3578742 B1 EP3578742 B1 EP 3578742B1 EP 18175813 A EP18175813 A EP 18175813A EP 3578742 B1 EP3578742 B1 EP 3578742B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sidebar
- rotor
- cylinder lock
- spring
- unlocked position
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B29/00—Cylinder locks and other locks with plate tumblers which are set by pushing the key in
- E05B29/0066—Side bar locking
Definitions
- the invention relates to a cylinder lock intended to be operated by a key, according to the preamble of claim 1.
- locks of this type in particular locks of the wafer tumbler lock type as described for instance in US 2008/0178647 A1 , the object arises to secure the rotor of the lock containing the tumblers against rotation when no key or a non-fitting key is inserted into the lock.
- US 2017/0234035 A1 shows to block a rotation of the rotor before all tumblers are moved into their respective unlocked position for a pin tumbler lock by means of a separate transversal locking function.
- the size of the lock is increased by this measure, and construction space at the location of the lock is, as a rule, limited.
- Generic WO 2015/189367 A1 shows a cylinder lock with a rotor mounted rotatably in a housing.
- a sidebar is provided that prevents a rotation of the rotor in a locked position.
- the cylinder lock intended to be operated by a key, comprises a rotor mounted rotatably in a housing and a plurality of spring-loaded tumblers arranged movably in the rotor and in the housing, the tumblers being moveable along a locking direction between a locked position in which they prevent a rotation of the rotor and an unlocked position in which they allow the rotation of the rotor.
- Each tumbler is pretensioned towards its locked position by a spring element arranged alongside the respective tumbler with regard to the locking direction.
- Each of the spring elements is arranged in a receptacle formed in the rotor.
- a sidebar is provided on the rotor, the sidebar being arranged for motion between a locked position in which it prevents the rotation of the rotor and an unlocked position in which it allows the rotation of the Z rotor.
- the sidebar is arranged along the locking direction of the tumblers beyond a radially inner end of all receptacles of the spring elements.
- the inventive design may be used with a wide variety of different tumblers.
- the cylinder lock has two receptacles placed on either side of each tumbler alongside the respective tumbler. These receptacles are arranged in the same plane as the respective tumbler, this plane extending perpendicular to a rotational axis of the rotor. The rotational axis of the rotor coincides with a longitudinal direction of the rotor.
- the cylinder lock according to the invention can be manufactured with only a small number of parts, thereby reducing material and assembly costs.
- the invention can be used in any cylinder lock, but most preferred the cylinder lock is a wafer tumbler lock.
- the sidebar extends in its locked position partly inside the rotor and partly inside the housing, analogous to the tumblers.
- an outer surface of the sidebar may have the same curvature or as an outer surface of the rotor adjacent the sidebar.
- the sidebar should be pretensioned towards its unlocked position, i.e. in the direction towards the rotor.
- the spring acting on the sidebar, in particular a coil spring, to generate the entire pretensioning force.
- the spring is accommodated in a close-fitting bore in the housing extending perpendicularly to the locking direction of the tumblers. Due to the location of the sidebar below the radially inner end of the receptacles of the spring elements, the bore does not extend in a radial direction of the rotor, but is offset from the center and, accordingly, from the rotation axis of the rotor.
- a ball is arranged between the sidebar and the spring, the spring acting only on the ball, and, in turn, the ball transferring the pretensioning force to the sidebar.
- the whole sidebar group may consist only of one single sidebar, one single spring and one single ball.
- the sidebar is arranged for linear displacement between its locked and its unlocked position.
- the direction of displacement of the sidebar is perpendicular to the locking direction of the tumblers.
- the direction of displacement of the sidebar can be perpendicular to the rotational axis of the rotor.
- the sidebar is arranged for rotation between its locked and its unlocked position.
- the rotor may comprise a bearing in which an axle of the sidebar, preferably in form of two end side stub shafts, is mounted, to decrease the construction space needed by the sidebar. It is possible, with the same technical effect, to design the sidebar for a rotational motion or for a pivoting or a swiveling motion about the axle.
- the sidebar In the unlocked position, the sidebar should be completely accommodated in the rotor so that the rotor can rotate without being held back by the housing.
- Each of the tumblers preferably comprises an engagement structure that interacts with the sidebar in the unlocked position of the sidebar to allow the sidebar to move into its unlocked position.
- the engagement structure may be a notch on a side face of each of the tumblers that is engaged by the sidebar. As long as the respective tumbler is not in its unlocked position, the sidebar is held in its locked position by the shape of the outer surface of the tumbler adjacent to the notch.
- Figures 1 and 2 show a cylinder lock 10 according to a first embodiment.
- a rotor 12 is arranged in space 13 manufactured in a housing 14 so that it can rotate about a central rotation axis.
- the rotational axis coincides with a longitudinal direction A of the cylinder lock 10 and of the rotor 12.
- the rotor 12 has several slots 16 arranged along its longitudinal direction A that each extend perpendicularly to the longitudinal direction A (indicated in figure 5 ). Into each of the slots 16, a single tumbler 18 is inserted so that the respective tumbler 18 is movable along a locking direction L.
- the locking direction L coincides with the radial direction of the rotor 12.
- Each of the tumblers 18 can move along the locking direction L in an unlocked position (shown in figure 1 ) and locked position (shown in figure 3 ).
- the locked position the respective tumbler 18 extends partly in the rotor 12 and partly in the housing 14 so that a rotation of the rotor 12 about its rotational axis is blocked.
- the housing 14 has appropriately sized slots 19 positioned correspondingly to the slots 16 in the rotor 12, to accommodate the part of the tumbler 18 that projects beyond the rotor 12.
- the slots 19 are part of the space 13.
- the tumblers 18 are thin, flat and plate-like elements with a through-hole 20 in their large surfaces through which a key is pushed when the cylinder lock 10 is to be locked and unlocked (not shown).
- a spring element 22 acting on the respective tumbler 18 is arranged in a receptacle 24 formed in the rotor 12.
- the receptacle 24 can be positioned on either side of the tumbler 18. It is equally possible to provide receptacles 24 on both sides of the tumbler 18 as is shown in the second embodiment (see for instance figure 3 ).
- the receptacles 24 extend along the locking direction L parallel to the diameter of the rotor 12.
- Each of the receptacles 24 has a radially outer end 26 constituting an opening in an outer surface 28 of the rotor 12.
- each receptacle 24 has a radially inner end 30 that is closed and lies inside the rotor 12.
- all of the receptacles 24 have the same length so that the radially inner ends 30 of the receptacles 24 defines a plane E through the rotor 12 parallel to the longitudinal direction A and perpendicular to the locking direction L.
- the spring element 22 usually is a coil spring.
- the spring element 22 pretensions the tumbler 18 into its locked position so that the cylinder lock 10 is locked when no key is inserted.
- each of the tumblers 18 is moved from its locked position into its unlocked position against the pretensioning force of the spring element 22.
- the rotor 12 is prevented from rotating by the respective tumbler(s) 18 that come(s) into engagement with the edges of their slots 19 in the housing 14.
- a sidebar 34 is provided on the rotor 12.
- the sidebar 34 is a single elongated component that extends along the longitudinal direction A of the rotor 12 along all of the slots 16 accommodating the tumblers 18.
- the sidebar 34 is arranged beyond the plane E on the side of the rotor 12 facing away from the radially outer ends 26 of the receptacles 24. Because of this design, the sidebar 34 does not interfere with any of the receptacles 24 on either side of the tumblers 18. Is it to be mentioned that regarded along the locking direction L and with reference to the plane E, the opening of the radially outer end 26 of the receptacle 24 is arranged on the opposite side of the sidebar 34.
- the sidebar 34 is arranged for linear displacement between its locked and its unlocked position.
- a bore 36 is provided in the housing 14, extending parallel to the plane E and perpendicular to the longitudinal direction A.
- a spring 38 is positioned inside the bore 36, pretensioning the sidebar 34 towards the rotor 12 and its unlocked position.
- a ball 40 is arranged between the sidebar 34 and the spring 38, the spring 38 acting on the ball 40 and the ball 40, in turn, acting on an outer surface 42 of the sidebar 34.
- the outer surface 42 of the sidebar 34 is adapted in its curvature to the curvature of the adjacent part of the outer surface 28 of the rotor 12, i.e. forming a part of the circular circumference of the rotor 12 (see Figs. 1 and 2 ).
- Each of the tumblers 18 is provided with an engagement structure 44, with which the sidebar 34 can interact in its unlocked position.
- the engagement structure 44 is realized by a notch 46 in a side face of each of the tumblers 18 facing the sidebar 34.
- the sidebar is provided with a nose 48 having a shape corresponding to the notch 46.
- the nose 48 is arranged on an outer surface of the sidebar 34 that faces the tumblers 18.
- the nose 48 of the sidebar 34 lies against the flat side 50 of this tumbler 18 adjacent to the notch 46. Consequently, the sidebar 34 is hindered from moving into its unlocked position. As in this position a part of the sidebar 34 still extends into the bore 36 in the housing 14, the rotor 12 cannot rotate.
- the notch 46 has chamfered edges 52, corresponding to chamfered edges 54 of the nose 48 of the sidebar 34.
- the rotor 12 When the cylinder lock 10 is to be locked, the rotor 12 is turned back by the key and the key is removed. The tumblers 18 are moved back into their locked position by the spring elements 22. Due to the interaction of the chamfered edges 52, 54 of the notch 46 and the nose 48, the sidebar 34 is pushed back into its locked position and slides out of the notches 46 so that it lies again against the flat side 50, keeping the sidebar 34 in its locked position against the pretensioning force of the spring 38.
- the bore 36 extends through the housing 14 all the way to an outer surface of the housing 14. This allows an easy mounting of the sidebar 34.
- the sidebar 34 is positioned in the rotor 12.
- the ball 40 and the spring 38 are fitted into the bore 36, and the spring 38 is compressed.
- the edges of the opening of the bore 36 in the outer surface of the housing 14 are permanently deformed radially inwards, for example by crimping, to secure the spring 38 inside the housing 14 (not shown).
- Figure 3 to 5 show a second embodiment of the cylinder lock 100.
- Components that are identical to those of the first embodiment or are only slightly altered keep their already introduced reference numbers to increase legibility.
- the only difference between the cylinder lock 100 of the second embodiment and that of the first embodiment is the design of the sidebar 134.
- the sidebar 134 is configured for rotational motion from its locked position into its unlocked position and back.
- the sidebar 134 has at its longitudinal ends stub shafts 160, 162 by which an axle of the sidebar 134 is accommodated in bearings 164, 166 manufactured in the rotor 112.
- an engagement structure 144 is provided on the tumblers 18.
- the engagement structure 144 comprises a notch 146 in each of the tumblers 18, analogous to the engagement structure of the first embodiment.
- a correspondingly shaped nose 148 extending along the sidebar 134 is provided.
- the sidebar 134 in its locked position, extends partly in the rotor 112 and partly in the housing 114 so that the rotor 112 cannot rotate.
- the sidebar 134 In its unlocked position, the sidebar 134 is completely accommodated inside the rotor 112, and the rotor 112 is free to turn about the rotation axis A.
- a shoulder 168 is provided that is manufactured at the opening of the bore 36 into the space 13 inside the rotor 112.
- the sidebar 134 has a protrusion 170 that in the locked position engages the shoulder 168.
- the shoulder 168 is oriented such that the rotor 112 is hindered from rotating in opening direction of the cylinder lock 100.
- the pretensioning force acting on the sidebar 134 towards its unlocked position can be provided as shown in first embodiment by a combination of a spring and a ball arranged in the bore 36 of the housing 114.
- the ball 40 acts on the sidebar 134 slightly off-axis so that the ball 40 applies a rotational force to the sidebar 134 (not shown).
- the operation principle of the cylinder lock 100 is the same as described for the first embodiment.
- the sidebar 134 cannot engage the engagement structure 144 on all of the tumblers 18 and the sidebar 134 is held back in its locked position. Only when all tumblers 18 are in their unlocked position is the nose 148 on the sidebar 134 pushed into engagement with all of the notches 146 by the pretensioning force generated by the spring 38 and the ball 40. Only then, the sidebar 134 is able to rotate into its unlocked position.
Description
- The invention relates to a cylinder lock intended to be operated by a key, according to the preamble of claim 1. With locks of this type, in particular locks of the wafer tumbler lock type as described for instance in
US 2008/0178647 A1 , the object arises to secure the rotor of the lock containing the tumblers against rotation when no key or a non-fitting key is inserted into the lock. -
US 2017/0234035 A1 shows to block a rotation of the rotor before all tumblers are moved into their respective unlocked position for a pin tumbler lock by means of a separate transversal locking function. However, the size of the lock is increased by this measure, and construction space at the location of the lock is, as a rule, limited. - Generic
WO 2015/189367 A1 shows a cylinder lock with a rotor mounted rotatably in a housing. A sidebar is provided that prevents a rotation of the rotor in a locked position. -
US 3 475 933 A andEP 2 267 251 A2 show further cylinder locks. - It is an object of the invention to provide a versatile and compact cylinder lock in which the rotor is additionally secured against rotation to increase inviolability of the lock.
- This object is achieved with a cylinder lock comprising the features of claim 1. The cylinder lock, intended to be operated by a key, comprises a rotor mounted rotatably in a housing and a plurality of spring-loaded tumblers arranged movably in the rotor and in the housing, the tumblers being moveable along a locking direction between a locked position in which they prevent a rotation of the rotor and an unlocked position in which they allow the rotation of the rotor. Each tumbler is pretensioned towards its locked position by a spring element arranged alongside the respective tumbler with regard to the locking direction. Each of the spring elements is arranged in a receptacle formed in the rotor. Further, a sidebar is provided on the rotor, the sidebar being arranged for motion between a locked position in which it prevents the rotation of the rotor and an unlocked position in which it allows the rotation of the Z rotor. According to the invention the sidebar is arranged along the locking direction of the tumblers beyond a radially inner end of all receptacles of the spring elements.
- As the sidebar is arranged on the rotor in a position where it does not interfere with the arrangement of the spring elements pretensioning the tumblers, the inventive design may be used with a wide variety of different tumblers.
- In particular, the cylinder lock has two receptacles placed on either side of each tumbler alongside the respective tumbler. These receptacles are arranged in the same plane as the respective tumbler, this plane extending perpendicular to a rotational axis of the rotor. The rotational axis of the rotor coincides with a longitudinal direction of the rotor.
- Further, the cylinder lock according to the invention can be manufactured with only a small number of parts, thereby reducing material and assembly costs.
- The invention can be used in any cylinder lock, but most preferred the cylinder lock is a wafer tumbler lock.
- Preferably, the sidebar extends in its locked position partly inside the rotor and partly inside the housing, analogous to the tumblers.
- To improve on the space requirement, an outer surface of the sidebar may have the same curvature or as an outer surface of the rotor adjacent the sidebar.
- The sidebar should be pretensioned towards its unlocked position, i.e. in the direction towards the rotor.
- It is possible to use a single spring acting on the sidebar, in particular a coil spring, to generate the entire pretensioning force. Advantageously, the spring is accommodated in a close-fitting bore in the housing extending perpendicularly to the locking direction of the tumblers. Due to the location of the sidebar below the radially inner end of the receptacles of the spring elements, the bore does not extend in a radial direction of the rotor, but is offset from the center and, accordingly, from the rotation axis of the rotor.
- In a preferred embodiment, a ball is arranged between the sidebar and the spring, the spring acting only on the ball, and, in turn, the ball transferring the pretensioning force to the sidebar. This arrangement allows for an improved force transmission between the linearly acting spring and the curved outer surface of the sidebar, in particular when the outer surface of the sidebar is adapted to the curvature of the outer surface of the rotor.
- The whole sidebar group may consist only of one single sidebar, one single spring and one single ball.
- In a first preferred embodiment, the sidebar is arranged for linear displacement between its locked and its unlocked position. Preferably, the direction of displacement of the sidebar is perpendicular to the locking direction of the tumblers. Also, the direction of displacement of the sidebar can be perpendicular to the rotational axis of the rotor.
- In a second preferred embodiment, the sidebar is arranged for rotation between its locked and its unlocked position.
- In this case, the rotor may comprise a bearing in which an axle of the sidebar, preferably in form of two end side stub shafts, is mounted, to decrease the construction space needed by the sidebar. It is possible, with the same technical effect, to design the sidebar for a rotational motion or for a pivoting or a swiveling motion about the axle.
- In the unlocked position, the sidebar should be completely accommodated in the rotor so that the rotor can rotate without being held back by the housing.
- Each of the tumblers preferably comprises an engagement structure that interacts with the sidebar in the unlocked position of the sidebar to allow the sidebar to move into its unlocked position.
- For instance, the engagement structure may be a notch on a side face of each of the tumblers that is engaged by the sidebar. As long as the respective tumbler is not in its unlocked position, the sidebar is held in its locked position by the shape of the outer surface of the tumbler adjacent to the notch.
- Further details of the invention are described in the following on the basis of two preferred embodiments, with reference to the attached drawings in which:
-
Figure 1 shows a cylinder lock according to a first embodiment of the invention in an unlocked state in a schematic sectional view; -
Figure 2 shows an enlarged detail ofFigure 1 ; -
Figure 3 shows a cylinder lock according to a second embodiment of the invention in a schematic sectional view with the sidebar in its locked position; -
Figure 4 shows the cylinder lock ofFigure 3 with the sidebar in its unlocked position; and -
Figure 5 shows a schematic perspective view of the rotor and the sidebar of the cylinder lock ofFigure 3 . -
Figures 1 and 2 show acylinder lock 10 according to a first embodiment. - As is known from conventional cylinder locks, in particular wafer tumbler locks, a
rotor 12 is arranged inspace 13 manufactured in ahousing 14 so that it can rotate about a central rotation axis. The rotational axis coincides with a longitudinal direction A of thecylinder lock 10 and of therotor 12. - The
rotor 12 hasseveral slots 16 arranged along its longitudinal direction A that each extend perpendicularly to the longitudinal direction A (indicated infigure 5 ). Into each of theslots 16, asingle tumbler 18 is inserted so that therespective tumbler 18 is movable along a locking direction L. The locking direction L coincides with the radial direction of therotor 12. - Each of the
tumblers 18 can move along the locking direction L in an unlocked position (shown infigure 1 ) and locked position (shown infigure 3 ). In the locked position, therespective tumbler 18 extends partly in therotor 12 and partly in thehousing 14 so that a rotation of therotor 12 about its rotational axis is blocked. To this effect, thehousing 14 has appropriately sizedslots 19 positioned correspondingly to theslots 16 in therotor 12, to accommodate the part of thetumbler 18 that projects beyond therotor 12. Theslots 19 are part of thespace 13. - In the example shown, the
tumblers 18 are thin, flat and plate-like elements with a through-hole 20 in their large surfaces through which a key is pushed when thecylinder lock 10 is to be locked and unlocked (not shown). - Alongside each of the
tumblers 18 in the cutting plane shown in the figures (corresponding to the plane defined by the respective tumbler 18), aspring element 22 acting on therespective tumbler 18 is arranged in areceptacle 24 formed in therotor 12. Thereceptacle 24 can be positioned on either side of thetumbler 18. It is equally possible to providereceptacles 24 on both sides of thetumbler 18 as is shown in the second embodiment (see for instancefigure 3 ). - The
receptacles 24 extend along the locking direction L parallel to the diameter of therotor 12. Each of thereceptacles 24 has a radiallyouter end 26 constituting an opening in anouter surface 28 of therotor 12. Also, eachreceptacle 24 has a radiallyinner end 30 that is closed and lies inside therotor 12. Usually, all of thereceptacles 24 have the same length so that the radiallyinner ends 30 of thereceptacles 24 defines a plane E through therotor 12 parallel to the longitudinal direction A and perpendicular to the locking direction L. Thespring element 22 usually is a coil spring. - The
spring element 22 pretensions thetumbler 18 into its locked position so that thecylinder lock 10 is locked when no key is inserted. - By insertion of the correct key through the through-
holes 20 in thetumblers 18, each of thetumblers 18 is moved from its locked position into its unlocked position against the pretensioning force of thespring element 22. - As long as one or more of the
tumblers 18 are still in their locked position, therotor 12 is prevented from rotating by the respective tumbler(s) 18 that come(s) into engagement with the edges of theirslots 19 in thehousing 14. - As a further measure of keeping the
rotor 12 from turning before all of thetumblers 18 are correctly moved into their unlocked position by a fitting key, asidebar 34 is provided on therotor 12. - The
sidebar 34 is a single elongated component that extends along the longitudinal direction A of therotor 12 along all of theslots 16 accommodating thetumblers 18. - Regarded along the locking direction L, the
sidebar 34 is arranged beyond the plane E on the side of therotor 12 facing away from the radially outer ends 26 of thereceptacles 24. Because of this design, thesidebar 34 does not interfere with any of thereceptacles 24 on either side of thetumblers 18. Is it to be mentioned that regarded along the locking direction L and with reference to the plane E, the opening of the radiallyouter end 26 of thereceptacle 24 is arranged on the opposite side of thesidebar 34. - In the first embodiment, shown in
figures 1 and 2 , thesidebar 34 is arranged for linear displacement between its locked and its unlocked position. - Perpendicular to the extension of the
sidebar 34, abore 36 is provided in thehousing 14, extending parallel to the plane E and perpendicular to the longitudinal direction A. Aspring 38 is positioned inside thebore 36, pretensioning thesidebar 34 towards therotor 12 and its unlocked position. - Between the
sidebar 34 and thespring 38, aball 40 is arranged, thespring 38 acting on theball 40 and theball 40, in turn, acting on anouter surface 42 of thesidebar 34. - In this example, the
outer surface 42 of thesidebar 34 is adapted in its curvature to the curvature of the adjacent part of theouter surface 28 of therotor 12, i.e. forming a part of the circular circumference of the rotor 12 (seeFigs. 1 and 2 ). - Each of the
tumblers 18 is provided with anengagement structure 44, with which thesidebar 34 can interact in its unlocked position. In this example, theengagement structure 44 is realized by anotch 46 in a side face of each of thetumblers 18 facing thesidebar 34. The sidebar is provided with anose 48 having a shape corresponding to thenotch 46. Thenose 48 is arranged on an outer surface of thesidebar 34 that faces thetumblers 18. - As long as at least one of the
tumblers 18 is in its locked position, thenose 48 of thesidebar 34 lies against theflat side 50 of thistumbler 18 adjacent to thenotch 46. Consequently, thesidebar 34 is hindered from moving into its unlocked position. As in this position a part of thesidebar 34 still extends into thebore 36 in thehousing 14, therotor 12 cannot rotate. - Only when all of the
tumblers 18 are in their unlocked position is thespring 38 able to push thesidebar 34 all the way into its unlocked position where thenose 48 engages thenotches 46 of all of thetumblers 18. In this unlocked position, thesidebar 34 is accommodated entirely inside therotor 12, itsouter surface 42 forming part of theouter surface 28 of therotor 12, allowing therotor 12 to turn about its rotation axis A. This situation is shown infigures 1 and 2 . - The
notch 46 has chamfered edges 52, corresponding to chamfered edges 54 of thenose 48 of thesidebar 34. - When the
cylinder lock 10 is to be locked, therotor 12 is turned back by the key and the key is removed. Thetumblers 18 are moved back into their locked position by thespring elements 22. Due to the interaction of the chamfered edges 52, 54 of thenotch 46 and thenose 48, thesidebar 34 is pushed back into its locked position and slides out of thenotches 46 so that it lies again against theflat side 50, keeping thesidebar 34 in its locked position against the pretensioning force of thespring 38. - In this example, the
bore 36 extends through thehousing 14 all the way to an outer surface of thehousing 14. This allows an easy mounting of thesidebar 34. First, thesidebar 34 is positioned in therotor 12. Then theball 40 and thespring 38 are fitted into thebore 36, and thespring 38 is compressed. Finally, the edges of the opening of thebore 36 in the outer surface of thehousing 14 are permanently deformed radially inwards, for example by crimping, to secure thespring 38 inside the housing 14 (not shown). -
Figure 3 to 5 show a second embodiment of thecylinder lock 100. Components that are identical to those of the first embodiment or are only slightly altered keep their already introduced reference numbers to increase legibility. - The only difference between the
cylinder lock 100 of the second embodiment and that of the first embodiment is the design of thesidebar 134. - In this example, the
sidebar 134 is configured for rotational motion from its locked position into its unlocked position and back. - To this effect, the
sidebar 134 has at its longitudinalends stub shafts sidebar 134 is accommodated inbearings rotor 112. - As
figures 3 and 4 show, anengagement structure 144 is provided on thetumblers 18. In this example, theengagement structure 144 comprises anotch 146 in each of thetumblers 18, analogous to the engagement structure of the first embodiment. Also, a correspondingly shapednose 148 extending along thesidebar 134 is provided. - As in the first embodiment, in its locked position, the
sidebar 134 extends partly in therotor 112 and partly in thehousing 114 so that therotor 112 cannot rotate. In its unlocked position, thesidebar 134 is completely accommodated inside therotor 112, and therotor 112 is free to turn about the rotation axis A. - In the housing 114 a
shoulder 168 is provided that is manufactured at the opening of thebore 36 into thespace 13 inside therotor 112. Thesidebar 134 has aprotrusion 170 that in the locked position engages theshoulder 168. Theshoulder 168 is oriented such that therotor 112 is hindered from rotating in opening direction of thecylinder lock 100. - The pretensioning force acting on the
sidebar 134 towards its unlocked position can be provided as shown in first embodiment by a combination of a spring and a ball arranged in thebore 36 of thehousing 114. In this case, theball 40 acts on thesidebar 134 slightly off-axis so that theball 40 applies a rotational force to the sidebar 134 (not shown). - The operation principle of the
cylinder lock 100 is the same as described for the first embodiment. - As long as even one of the
tumblers 18 is not in its unlocked position, thesidebar 134 cannot engage theengagement structure 144 on all of thetumblers 18 and thesidebar 134 is held back in its locked position. Only when alltumblers 18 are in their unlocked position is thenose 148 on thesidebar 134 pushed into engagement with all of thenotches 146 by the pretensioning force generated by thespring 38 and theball 40. Only then, thesidebar 134 is able to rotate into its unlocked position. - When the
cylinder lock 100 is to be locked again and the key removed from thetumblers 18, thetumblers 18 are moved back into their locked position by the force of thespring elements 22. Due to the chamfered sides of thenotches 146, thenose 148 of thesidebar 134 is pushed out of thenotches 146, and thesidebar 134 is turned back into its locked position, again preventing a rotation of therotor 112. - An embodiment in which two or
more tumblers 18 are inserted into eachslot 16 is also possible and compatible with asidebar
Claims (9)
- A cylinder lock (10; 100) intended to be operated by a key, comprising a rotor (12; 112) mounted rotatably in a housing (14; 114), a plurality of spring-loaded tumblers (18) arranged moveably in the rotor (12; 112) and in the housing (14; 114) along a locking direction (L) between a locked position in which they prevent a rotation of the rotor (12; 112) and an unlocked position in which they allow the rotation of the rotor (12; 112), each tumbler (18) being pretensioned towards its locked position by a spring element (22) arranged alongside the tumbler (18) with regard to the locking direction (L), each spring element (22) being arranged in a receptacle (24) formed in the rotor (12; 112), a sidebar (34; 134) being provided on the rotor (12; 112), the sidebar (34; 134) being arranged for motion between a locked position in which it prevents the rotation of the rotor (12; 112) and an unlocked position in which it allows the rotation of the rotor (12; 112), characterized in that the sidebar (34; 134) is arranged along the locking direction (L) of the tumblers (18) beyond a radially inner end (30) of all receptacles (24) of the spring elements (22).
- The cylinder lock according to claim 1, characterized in that there are two receptacles (24) placed on either side of each tumbler (18) alongside the respective tumbler (18).
- The cylinder lock according to any of the preceding claims, characterized in that an outer surface (42) of the sidebar (34; 134) has the same curvature as an outer surface (28) of the rotor (12; 112) adjacent the sidebar (34; 134).
- The cylinder lock according to any of the preceding claims, characterized in that the sidebar (34; 134) is pretensioned towards its unlocked position by a single spring (38).
- The cylinder lock according to claim 4, characterized in that a ball (40) is arranged between the sidebar (34; 134) and the spring (38), the spring (38) acting only on the ball (40).
- The cylinder lock according to any of the preceding claims, characterized in that the sidebar (34) is arranged for linear displacement between its locked and its unlocked position.
- The cylinder lock according to any of the claims 1 to 5, characterized in that the sidebar (134) is arranged for rotation between its locked and its unlocked position.
- The cylinder lock according to claim 7, characterized in that the rotor (112) comprises a bearing (164, 166) in which an axle (160, 162) of the sidebar (134) is mounted.
- The cylinder lock according to any of the preceding claims, characterized in that each tumbler (18) comprises an engagement structure (44; 144) that interacts with the sidebar (34; 134) in the unlocked position of the sidebar (34; 134).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18175813.7A EP3578742B1 (en) | 2018-06-04 | 2018-06-04 | Cylinder lock |
PCT/EP2019/064500 WO2019234027A1 (en) | 2018-06-04 | 2019-06-04 | Cylinder lock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18175813.7A EP3578742B1 (en) | 2018-06-04 | 2018-06-04 | Cylinder lock |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3578742A1 EP3578742A1 (en) | 2019-12-11 |
EP3578742B1 true EP3578742B1 (en) | 2021-03-03 |
Family
ID=62528360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18175813.7A Active EP3578742B1 (en) | 2018-06-04 | 2018-06-04 | Cylinder lock |
Country Status (2)
Country | Link |
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EP (1) | EP3578742B1 (en) |
WO (1) | WO2019234027A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US3475933A (en) * | 1968-03-29 | 1969-11-04 | Gen Motors Corp | Lock cylinder assembly |
US4085601A (en) * | 1974-10-25 | 1978-04-25 | Sauder Kenneth D | Nonpickable lock |
FR2882081B1 (en) | 2005-02-11 | 2007-05-04 | Valeo Securite Habitacle Sas | ROTATING BARREL LATCHABLE BY MEANS OF A MULTI-TRACK KEY |
DE102009030032A1 (en) * | 2009-06-23 | 2010-12-30 | ABUS August Bremicker Söhne KG | Platelet cylinder with lockable platelet tumblers |
DE102014108355A1 (en) * | 2014-06-13 | 2015-12-17 | ABUS August Bremicker Söhne KG | cylinder lock |
US10280646B2 (en) | 2016-02-11 | 2019-05-07 | Iris Business Intelligence Inc. | Pick-resistant pin tumbler lock |
-
2018
- 2018-06-04 EP EP18175813.7A patent/EP3578742B1/en active Active
-
2019
- 2019-06-04 WO PCT/EP2019/064500 patent/WO2019234027A1/en active Application Filing
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WO2019234027A1 (en) | 2019-12-12 |
EP3578742A1 (en) | 2019-12-11 |
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