EP0964120A1 - Serrure tubulaire - Google Patents

Serrure tubulaire Download PDF

Info

Publication number
EP0964120A1
EP0964120A1 EP98830354A EP98830354A EP0964120A1 EP 0964120 A1 EP0964120 A1 EP 0964120A1 EP 98830354 A EP98830354 A EP 98830354A EP 98830354 A EP98830354 A EP 98830354A EP 0964120 A1 EP0964120 A1 EP 0964120A1
Authority
EP
European Patent Office
Prior art keywords
pins
rotor
pin
hole
holes
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Withdrawn
Application number
EP98830354A
Other languages
German (de)
English (en)
Inventor
Gersam Meroni
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.)
Serrature Meroni SpA
Original Assignee
Serrature Meroni SpA
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 Serrature Meroni SpA filed Critical Serrature Meroni SpA
Priority to EP98830354A priority Critical patent/EP0964120A1/fr
Publication of EP0964120A1 publication Critical patent/EP0964120A1/fr
Withdrawn legal-status Critical Current

Links

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
    • E05B27/02—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in operated by the edge of the key
    • E05B27/08—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in operated by the edge of the key arranged axially
    • E05B27/083—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in operated by the edge of the key arranged axially of the split-pin tumbler type

Definitions

  • the subject of the present invention is a tubular lock.
  • Tubular locks of the type comprising a cylindrical body in which a rotor is rotatable in order to operate a latch are known.
  • the lock At the front, between the body and the rotor, the lock comprises an annular lock frame into which the tubular key is fitted.
  • An annular series of through-holes, parallel to the axis of the rotor, is formed in the rotor adjacent the frame, each through-hole housing a respective slidable front pin.
  • An annular series comprising the same number of blind holes, parallel to the axis of the rotor and having the same diameter as the through-holes of the rotor, is correspondingly formed inside the body; each blind hole houses a respective slidable rear pin on which a spring acts, urging the pin out of the hole.
  • each through-hole of the rotor is aligned and in communication with a respective blind hole of the body and each rear pin is held resiliently by the respective spring against a respective front pin and is partially housed in the hole of the front pin so as to prevent the rotor from rotating.
  • the front pins differ from one another in length, whereas the rear pins are of equal length.
  • Each front pin and the respective rear pin form a pair of pins.
  • This lock is operated with the use of a key having a tubular shank the end of which has an outer, annular series of recesses, the number of recesses being equal to the number of pairs of pins, and the recesses being of different and suitable lengths. If the key is inserted in the annular frame in an appropriate position defined by suitable matching elements, each recess of the shank of the key engages a portion of a respective front pin and the movement of the key into the frame urges the pins towards the base of the lock against the action of the springs until, at the end of the key's travel, by virtue of the different lengths of the recesses, the rear pins are housed entirely in their holes and the rotor can thus rotate freely in order to operate the latch.
  • this lock is very resistant to forcing since, unlike cylinder locks, the front portion can be made of very hard material.
  • a skilled prospective intruder can operate the lock in a short time with a suitable tool without having a copy of the key and without forcing the lock.
  • the tool comprises a head and a shank with a tubular end portion on which a series of rods is mounted for sliding with friction along the shank.
  • the intruder inserts the end portion of the shank of the tool into the frame and, by suitable movements of the tool, finds, by means of the rods which interact with the pins, the position in which the pins are housed entirely in the respective holes. The intruder can thus release the rotor for rotation relative to the body of the lock and move the latch.
  • the object of the present invention is to remedy this weak point of the aforementioned tubular locks.
  • the tubular lock shown generally indicated 10, comprises a body 11 housing for rotation a rotor 12 which can be connected to a latch, not shown.
  • the rotor 12 is locked in the body 11 of the lock and is released and rotated in order to operate the latch by means of a suitable tubular key 13.
  • the body 11 is constituted by a container 14 and by a bush 15 fixed in the container 14.
  • the rotor 12 comprises a head 16 and a shank 17; the head 16 is locked axially between an internal shoulder of the container 14 and the bush 15; the shank 17, on the other hand, slides in the bush 15 and projects from the body 11 at the rear in order to be connected to the latch, not shown.
  • the rotor 12 also comprises an axial pin 18 constituted by a head 19 and a shank 20.
  • the head 19 of the pin 18 projects from the front of the head 16 of the rotor 12; the shank 20 of the pin 18 is force fitted in the head 16 and the shank 17 of the rotor.
  • An annular frame 31 for housing the tubular shank 21 of the key 13 is formed at the front, between the container 14 and the head 19 of the pin 18 of the rotor 12. Moreover, a recess 22 for coupling with consecutive longitudinal projections 23 of the shank 21 of the key 13 is formed in the annular frame 31.
  • An annular series of through-holes 24 is formed in the head 16 of the rotor 12, parallel to the axis X thereof.
  • the through-holes 24 are disposed adjacent the frame 31 and in communication therewith.
  • Each through-hole 24 houses a respective slidable front pin 25.
  • the front pins 25 differ from one another in length.
  • an annular series of blind holes 26 is formed in the bush 15, the number of blind holes 26 being equal to the number of through-holes 24 of the rotor, and the blind holes 26 being parallel to the axis X of the rotor 12 and having the same diameter as the through-holes 24.
  • Each blind hole 26 houses for sliding a respective rear pin 27 on which a spring 28 acts, urging the pin out of the hole 26.
  • the mouth 29 of each blind hole 26 is flared.
  • the rear pins 27 also differ from one another in length.
  • some of the springs 28 differ from the others in stiffness.
  • each through-hole 24 of the rotor 12 is aligned and in communication with a respective blind hole 26 of the bush 15 and each rear pin 27 is kept resiliently against the respective front pin 25 by the respective spring 28 and is housed partially in the hole 24 of the front pin. Since all of the rear pins 27 are engaged between the bush 15 and the rotor 12, the rotor 12 is thus prevented from rotating.
  • seven pairs of pins each formed by a front pin 25 and by the respective rear pin 27, are used and seven holes 24 and seven holes 26 are correspondingly provided.
  • Figures 4, 5 and 6 show three of these pairs of pins 25, 27 in the rest position.
  • the tubular key 13 has, at the end of its tubular shank 21, an annular series of recesses 30, the number of recesses being equal to the number of pairs of pins 25, 27 and hence being seven, and the recesses having a number of suitable, different lengths equal to the number of pairs of pins 25, 27.
  • the shank 21 of the key 13 is inserted in the frame 31, the projections 23 being aligned with the recess 22 and, at a certain point during the movement of the key into the frame, each recess 30 of the shank of the key engages a portion of a respective front pin 25; the coupling between the recess 22 and the projections 23 ensures that this engagement is correct.
  • the pairs of pins 25, 27 are disconnected. If the rotor 12 is rotated in the opposite direction back to the starting position, the latch correspondingly moves in the opposite direction and the pairs of pins 25, 27 are coupled again; if the key 13 is removed from the frame 31, the rear pins 27 are returned by the action of the springs 28 so as to be fitted partially in the holes 24, locking the rotor, and the lock is returned to the rest position.
  • the lock 10 described and illustrated is very difficult to tamper with.
  • the flare of the mouth 29, however, means that the diameter of the mouth is larger than the diameter of the rest of the blind hole 26 and hence that it is not possible, by the small rotations which the rotor 12 is allowed, to succeed in striking the front pin 25 against the edge of the blind hole in order to identify the release position of the rotor; the front pin 25 does, however, strike against the internal wall of the mouth 29, thus deceiving the prospective intruder.
  • both the front pins 25 and the rear pins 27 differ from one another in length. If the pairs of pins 25, 27 are pushed fully home until the springs 28 are fully compressed as shown in Figures 10, 11 and 12, the rearward travel in order to bring the pairs of pins to the position in which the rotor is released is different for each pair of pins so that the release position of the rotor cannot be identified.
  • the rear pins are of equal length and the rearward travel of the pairs of pins from the travel-limit position is therefore equal for all of the pairs of pins, naturally facilitating the identification of the release position of the rotor.
  • a further factor which helps to prevent tampering is the different stiffnesses of the springs 28.
  • the springs 28 exert different resilient forces on the various pairs of pins and it is thus not possible for the prospective intruder to rely on the resilient force to identify the release position of the rotor.
  • the resilient forces exerted by the springs are the same and this naturally favours the prospective intruder.
  • any enlargement of the mouth of the blinds holes may be provided.
  • a cylindrical enlargement of larger diameter than the rest of the hole may be formed.
  • the different lengths of the pins in general, both for the front pins and for the rear pins, it is possible to consider making at least one pin of a different length from the others. For example, it is possible to make a certain number of pins of equal length and to make the rest of the pins the same length as one another but a different length from the previous pins or to make the rest of the pins a different length from one another and from the previous pins.
  • the stiffness of the springs that is, at least one spring should have a different stiffness from the other springs. It may be structurally advantageous to make a certain number of springs of a certain stiffness and the rest of the springs of another stiffness.
  • the body and the rotor of the lock may have structures different from that shown, provided that they perform the same functions.

Landscapes

  • Slide Fasteners (AREA)
EP98830354A 1998-06-08 1998-06-08 Serrure tubulaire Withdrawn EP0964120A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98830354A EP0964120A1 (fr) 1998-06-08 1998-06-08 Serrure tubulaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98830354A EP0964120A1 (fr) 1998-06-08 1998-06-08 Serrure tubulaire

Publications (1)

Publication Number Publication Date
EP0964120A1 true EP0964120A1 (fr) 1999-12-15

Family

ID=8236678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98830354A Withdrawn EP0964120A1 (fr) 1998-06-08 1998-06-08 Serrure tubulaire

Country Status (1)

Country Link
EP (1) EP0964120A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2215433A1 (es) * 2001-11-08 2004-10-01 Valeo Sistemas De Seguridad Y De Cierre, S.A. Cerradura reforzada, especialmente para vehiculos.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1120957A (en) * 1965-06-11 1968-07-24 Chicago Lock Co Axial tumbler lock
US3783660A (en) * 1972-04-20 1974-01-08 Unican Security Systems Pick resistant lock
DE2949643A1 (de) * 1978-12-11 1980-06-19 Chicago Lock Co Zylinderschloss
EP0139796A1 (fr) * 1983-10-26 1985-05-08 Shih-Ming Hwang Serrure tubulaire
US4546629A (en) * 1983-04-05 1985-10-15 Hwang Shih M Safety groove of tubular locks
US4716749A (en) * 1987-01-16 1988-01-05 Fort Lock Corporation High security pin tumbler lock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1120957A (en) * 1965-06-11 1968-07-24 Chicago Lock Co Axial tumbler lock
US3783660A (en) * 1972-04-20 1974-01-08 Unican Security Systems Pick resistant lock
DE2949643A1 (de) * 1978-12-11 1980-06-19 Chicago Lock Co Zylinderschloss
US4546629A (en) * 1983-04-05 1985-10-15 Hwang Shih M Safety groove of tubular locks
EP0139796A1 (fr) * 1983-10-26 1985-05-08 Shih-Ming Hwang Serrure tubulaire
US4716749A (en) * 1987-01-16 1988-01-05 Fort Lock Corporation High security pin tumbler lock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2215433A1 (es) * 2001-11-08 2004-10-01 Valeo Sistemas De Seguridad Y De Cierre, S.A. Cerradura reforzada, especialmente para vehiculos.

Similar Documents

Publication Publication Date Title
US6523382B1 (en) Free wheeling lock assembly
CA1308762C (fr) Agencements de serrures cylindriques et a permutation
US3524335A (en) Axial tumbler type lock and key therefor
US4912953A (en) Re-keyable cylinder lock
US7634931B2 (en) Rekeyable lock cylinder assembly with adjustable pin lengths
JP3529795B2 (ja) 取り外し可能なプラグを有した錠
US6526791B2 (en) High security cylinder lock and key
USRE39364E1 (en) Cylinder lock and key
US10337210B2 (en) Interchangeable cylinder lock core for a cylinder lock unit
US6058751A (en) Free-wheeling lock
US10570643B2 (en) Cylinder lock core for a cylinder lock unit
GB2492829A (en) Double lock cylinder with key cylinder, thumbturn, and mis-alignment clutch
US4083211A (en) Axial split-pin tumbler-type lock mechanism for a handle lock
WO2018075883A1 (fr) Noyau de moyeu multifonction pour serrure à mortaiser et procédé d'assemblage
US6453706B1 (en) Padlock with a U-shaped lock casing
US20020104337A1 (en) Combination lock
EP0964120A1 (fr) Serrure tubulaire
EP0708217B1 (fr) Serrure cylindrique
FI91096B (fi) Sylinterilukko
US4227387A (en) Axial split-pin tumbler-type lock mechanism
US4662198A (en) Axial split-pin tumbler-type lock mechanism for a pop-out lock
EP0899398B1 (fr) Serrure cylindrique
JPH102134A (ja) シリンダー錠
JPH07229332A (ja) 内筒交換式のシリンダ錠
JP2002227466A (ja) シリンダー錠及びそれに用いるプラグ

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GR IT PT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000403

AKX Designation fees paid

Free format text: DE ES FR GR IT PT

17Q First examination report despatched

Effective date: 20020425

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: 20020906