EP1474580A1 - Lock device with removable core - Google Patents
Lock device with removable coreInfo
- Publication number
- EP1474580A1 EP1474580A1 EP03731861A EP03731861A EP1474580A1 EP 1474580 A1 EP1474580 A1 EP 1474580A1 EP 03731861 A EP03731861 A EP 03731861A EP 03731861 A EP03731861 A EP 03731861A EP 1474580 A1 EP1474580 A1 EP 1474580A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- adapter
- key
- side bar
- blocking
- 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.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B9/00—Lock casings or latch-mechanism casings ; Fastening locks or fasteners or parts thereof to the wing
- E05B9/08—Fastening locks or fasteners or parts thereof, e.g. the casings of latch-bolt locks or cylinder locks to the wing
- E05B9/084—Fastening of lock cylinders, plugs or cores
- E05B9/086—Fastening of rotors, plugs or cores to an outer stator
-
- 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
- E05B27/0082—Side bar locking
Definitions
- the present invention relates generally to lock devices and, more particularly, to a lock assembly with a key- activated removable core structure.
- a cylinder lock comprises a central plug or core and an outer shell or housing, in which the core rotates.
- the housing is mounted in a suitable latch structure.
- a removable core lock for cars is disclosed in the patent publication US 2,036,764, wherein the connection between the core and an adapter actuating the lock operating means is in the form of a bayonet joint releas ble without tools.
- a long user key engaging a groove in the adapter must be used to rotate not only the core but also the adapter.
- a short key is used, whereby the core is rotated 90 degrees relatively to the adapter in a specified direction.
- An object of the present invention is to provide a removable core lock wherein the drawbacks of prior art devices are eliminated or at least mitigated.
- the invention is based on the realization that engagement elements can be used for selectively engage and disengage the rotation of a core relatively to an adapter in a removable core lock.
- the lock device according to the present invention has a configuration wherein means of connection are provided to axially interlock the core and an adapter operatively connected to a bolt, and wherein engagement elements are provided to allow or prevent the means of connection to be disengaged.
- the engagement elements comprise a radially moveable side bar in the core and a recess in an aperture in an adapter operatively connected to a bolt.
- the side bar provides a secure way of preventing rotation of the core relatively to the adapter.
- a bayonet joint is used as the means of connection to prevent withdrawal of the core from the cylinder housing, providing a robust arrangement.
- fig. 1 is an overall exploded view of a lock device according to the invention.
- figs . 2 and 3 are perspective views of the lock device in fig. 1 with a core removed from a cylinder housing;
- fig. 4 is a perspective view of the lock device with inserted core
- fig. 5 is a detailed view of the core in figs. 2 and 3;
- fig. 6 is a detailed view of an adapter part with attached bolt
- fig. 7 is a top sectional view of the lock device
- figs. 8 and 9 are side views of a user key and a service key, respectively, for use with the lock device;
- fig. 10a is an elevation sectional view of the lock device with inserted user key;
- figs. 10b and 10c are views taken along the lines Xb-Xb and Xc-Xc, respectively, showing an inserted user key co-operating with a blocking pin;
- figs, lla-c are views similar to figs. lOa-c but showing the use of a service key instead of a user key.
- FIG. 1 there is shown an exploded view showing the parts comprised in a lock device according to the invention.
- a cylinder housing 10 is provided with a substantially circular cavity 10a arranged to accommodate a substan- tially circular cylinder core, generally designated 20.
- the core has a key way 20a arranged to receive a key 21, as is conventional.
- Two outer side bars 22a, 22b are arranged in a respective longitudinal groove 20b in the core, one of which being visible in fig. 1.
- Push pins 23 and springs 24 are provided for biasing the side bars radially outwardly and into engagement with a respective longitudinal groove 10b in the inner surface of the cavity 10a, one of which grooves being visible in fig. 1.
- a side bar arrangement of the above kind is described for example in the international patent publication WO
- the core 20 is provided with a semi-circular extension 20c having a groove 20d formed therein, see fig. 5.
- the function of this protruding portion will be explained below with reference to figs . 5 and 6.
- a blocking pin 25 is provided in an opening in the core 20.
- the blocking pin is spring biased downwardly by means of a spring 26 acting on an essentially disc-shaped portion 25a of the blocking pin.
- the spring 26 is kept in position by a cover plate 27.
- the blocking pin 25 is moveable between a first posi- tion, wherein it blocks the radial movement of a further or inner side bar 28, and a second position, wherein the radial movement of the inner side bar is not blocked.
- the inner side bar functions to prevent mutual rotational movement of the core 20 and an adapter 30, as will be described in detail below with reference to figs. lOa-c.
- the adapter 30 is substantially circular with an outer surface 30a with diameter corresponding to that of the main portion of the core 20.
- the adapter 30 has an aper- ture with a substantially circular inner surface 30b with a longitudinal groove 30c arranged to receive the inner side bar 28 of the core.
- the adapter ends in a tailpiece 30e arranged to be operatively connected to a stop washer 31, a bolt 32, a lock washer 33, and a nut 34.
- the bolt 32 is kept in place on the tailpiece by means of the nut 34 and thus rotates with the adapter, thereby being operatively con- nected to the locking mechanism of the lock.
- the adapter is thus rotatably arranged in the inner portion of the cavity 10a, inside of the core 20.
- FIG. 2 and 3 there is shown how the removable core 20 with an inserted key 21 is positioned in relation to the cylinder housing 10 during insertion or retraction of the core. From fig. 3 there is seen that the longitudinal groove 10b of the housing 10 is aligned with the longitudinal groove 30c of the adapter 30. This is to allow the outer side bar 22a to engage the groove 10b in the housing while the inner side bar 28 engages the groove 30c in the adapter.
- the semi-circular extension 20c of the core 20 is shown with the groove 20d formed therein.
- the groove 20d is arranged to co-operate with the flange 30d of the adapter 30, which covers approximately 90 degrees of the inner surface of the adapter.
- the core 20 When the core 20 is inserted into the housing and the extension thereof engages the adapter 30, the core has a rotational position so that the extension 20c avoids the flange 30d.
- the flange 30d engages the groove 20d in the extension so as to provide a bayonet joint between the core and the adapter, thereby blocking longitudinal or axial movement of the core. Withdrawal of the core from the housing is thereby prevented.
- the co-operation of the groove 20d in the core extension and the flange 30d prevents longitudinal movement of the core, thereby keeping it completely fixed in the housing.
- the movement of the inner side bar 28 is controlled in a different way, as will be explained in detail below with reference to figs. lOa-c and lla-c.
- a user key shown in fig. 8
- a service key shown in fig. 9
- a user key 21' with a groove 21a arranged in a side surface of a key bit portion 21c and controlling the movement of the pin tumblers 29, as is conventional.
- the service key 21 shown in fig. 9 differs from the user key only in that there is provided a notch or indent 21b in the upper end portion of the key bit having an essentially planar surface.
- the notch can have different heights or codes, denoted by the distance " ⁇ " in the figure, which is the height from the bottom of the key bit to the planar surface of the notch.
- "d" can take three different values , thus providing three different service key codes .
- fig. 10a which is a sectional view of the lock device with an inserted user key 21', there is seen how the upper forward slanting portion of the key has pushed the blocking pin 25 upwardly to a defined level.
- fig. 10b which is an end view taken along the line lOb-lOb of fig. 10a and showing only the key 21', the blocking pin 25, the inner side bar 28, and the outer side bar 22b. It is here seen that the key acts on the essentially disc-shaped portion of the blocking pin, see also fig. lOc.
- a groove 25b in the blocking pin 25 is at a dif- ferent level than the inner side bar 28.
- the inner side bar is thus prevented from moving inwardly by the blocking pin, as is indicated by the crossed-over arrow in fig. 10c.
- the outer side bars 22a, 22b are allowed to move inwardly, as indicated by the other arrow in fig. 10c.
- the adapter rotates with the core, bringing the bolt 32 attached to the tailpiece 30e with it. All the time, the bayonet joint provided by the core extension 20c and the flange 30d prevents withdrawal of the core from the housing.
- FIG. 11a there is shown how a service key 21 having an indent 21b has pushed the blocking pin 28 to a different level than the user key in fig. 10a.
- fig. lib there is seen how the inner side bar 28 engages the groove in the blocking pin 25. The inner side bar 28 is thereby allowed to move inwardly from engagement with the longitudinal groove 30c in the adapter 30.
- the flange 30d of the adapter disengages from the groove 20d in the core, whereby the core is free to be withdrawn from the housing cavity 10a.
- a key operated removable core is thus provided.
- part of the outer side bar 22a blocks inward movement of the inner side bar 28 when the outer side bar is engaging the groove in the core.
- a service key 21 pushing the blocking pin 25 to a correct level for allowing the inner side bar to enter the groove in the blocking pin but having the wrong side code 21a will block inward movement of the outer side bar 22a, which in turn blocks inward movement of the inner side bar 28.
- a service key is required which is provided with both correct code for the outer side bar and correct service key code for the inner side bar.
- a preferred embodiment of a lock device according to the invention has been described. A person skilled in the art realizes that this could be varied within the scope of the appended claims. Thus, although a lock having two outer side bars have been shown, the inventive idea is also applicable to locks having only one outer side bar or no side bars at all for the locking of the cylinder in the cylinder housing. Instead, a lock having conventional pin tumblers comprising top and bottom pins can be used with the invention.
- An inner side bar has been described as the engagement element engaging an engagement element in the form of a groove in the adapter.
- the engagement elements can take may different shapes .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0200138A SE522880C2 (en) | 2002-01-18 | 2002-01-18 | Locking and key device with replaceable core and service key for use with the device |
SE0200138 | 2002-01-18 | ||
PCT/SE2003/000071 WO2003062568A1 (en) | 2002-01-18 | 2003-01-17 | Lock device with removable core |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1474580A1 true EP1474580A1 (en) | 2004-11-10 |
Family
ID=20286697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03731861A Withdrawn EP1474580A1 (en) | 2002-01-18 | 2003-01-17 | Lock device with removable core |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1474580A1 (en) |
SE (1) | SE522880C2 (en) |
WO (1) | WO2003062568A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE533747C2 (en) * | 2009-12-18 | 2010-12-21 | Assa Ab | Reprogrammable cylinder lock with latch rail and keys for such a lock |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2036764A (en) * | 1930-07-01 | 1936-04-07 | Yale & Towne Mfg Co | Lock |
US5431034A (en) * | 1993-09-23 | 1995-07-11 | Tong-Lung Metal Industry Co., Ltd. | Cylinder lock with removable and replaceable key plug |
AUPN890196A0 (en) * | 1996-03-25 | 1996-04-18 | Australian Lock Company Pty Ltd | Removable plug lock |
-
2002
- 2002-01-18 SE SE0200138A patent/SE522880C2/en not_active IP Right Cessation
-
2003
- 2003-01-17 EP EP03731861A patent/EP1474580A1/en not_active Withdrawn
- 2003-01-17 WO PCT/SE2003/000071 patent/WO2003062568A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO03062568A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2003062568A1 (en) | 2003-07-31 |
SE0200138D0 (en) | 2002-01-18 |
SE522880C2 (en) | 2004-03-16 |
SE0200138L (en) | 2003-07-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20040812 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: WIDEN, JOHAN Inventor name: NYLANDER, MIKAEL |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20060907 |