EP3578742A1 - Zylinderschloss - Google Patents

Zylinderschloss Download PDF

Info

Publication number
EP3578742A1
EP3578742A1 EP18175813.7A EP18175813A EP3578742A1 EP 3578742 A1 EP3578742 A1 EP 3578742A1 EP 18175813 A EP18175813 A EP 18175813A EP 3578742 A1 EP3578742 A1 EP 3578742A1
Authority
EP
European Patent Office
Prior art keywords
sidebar
rotor
cylinder lock
spring
tumblers
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
Application number
EP18175813.7A
Other languages
English (en)
French (fr)
Other versions
EP3578742B1 (de
Inventor
Julieta PASTOR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Minebea AccessSolutions France SAS
Original Assignee
U Shin France SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by U Shin France SAS filed Critical U Shin France SAS
Priority to EP18175813.7A priority Critical patent/EP3578742B1/de
Priority to PCT/EP2019/064500 priority patent/WO2019234027A1/en
Publication of EP3578742A1 publication Critical patent/EP3578742A1/de
Application granted granted Critical
Publication of EP3578742B1 publication Critical patent/EP3578742B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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.
  • 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.
  • 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 rotor, the sidebar being 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.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lock And Its Accessories (AREA)
EP18175813.7A 2018-06-04 2018-06-04 Zylinderschloss Active EP3578742B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18175813.7A EP3578742B1 (de) 2018-06-04 2018-06-04 Zylinderschloss
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 (de) 2018-06-04 2018-06-04 Zylinderschloss

Publications (2)

Publication Number Publication Date
EP3578742A1 true EP3578742A1 (de) 2019-12-11
EP3578742B1 EP3578742B1 (de) 2021-03-03

Family

ID=62528360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18175813.7A Active EP3578742B1 (de) 2018-06-04 2018-06-04 Zylinderschloss

Country Status (2)

Country Link
EP (1) EP3578742B1 (de)
WO (1) WO2019234027A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US20080178647A1 (en) 2005-02-11 2008-07-31 Valeo Securite Habitacle Rotary Cylinder Lock Which Can Be Actuated with a Multi-Groove Key
EP2267251A2 (de) * 2009-06-23 2010-12-29 ABUS August Bremicker Söhne KG Zylinderschloss mit sperrbaren Plätchenzuhaltungen
WO2015189367A1 (de) * 2014-06-13 2015-12-17 ABUS August Bremicker Söhne KG Zylinderschloss
US20170234035A1 (en) 2016-02-11 2017-08-17 Spencer Purves McLennan Pick-Resistant Pin Tumbler Lock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US20080178647A1 (en) 2005-02-11 2008-07-31 Valeo Securite Habitacle Rotary Cylinder Lock Which Can Be Actuated with a Multi-Groove Key
EP2267251A2 (de) * 2009-06-23 2010-12-29 ABUS August Bremicker Söhne KG Zylinderschloss mit sperrbaren Plätchenzuhaltungen
WO2015189367A1 (de) * 2014-06-13 2015-12-17 ABUS August Bremicker Söhne KG Zylinderschloss
US20170234035A1 (en) 2016-02-11 2017-08-17 Spencer Purves McLennan Pick-Resistant Pin Tumbler Lock

Also Published As

Publication number Publication date
EP3578742B1 (de) 2021-03-03
WO2019234027A1 (en) 2019-12-12

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