EP4353926A1 - Serrure cylindrique - Google Patents

Serrure cylindrique Download PDF

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Publication number
EP4353926A1
EP4353926A1 EP23203405.8A EP23203405A EP4353926A1 EP 4353926 A1 EP4353926 A1 EP 4353926A1 EP 23203405 A EP23203405 A EP 23203405A EP 4353926 A1 EP4353926 A1 EP 4353926A1
Authority
EP
European Patent Office
Prior art keywords
core
cylinder
housing
core pin
circumferential groove
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.)
Pending
Application number
EP23203405.8A
Other languages
German (de)
English (en)
Inventor
Christian Wittmann
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.)
EVVA Sicherheitstechnologie GmbH
Original Assignee
EVVA Sicherheitstechnologie GmbH
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 EVVA Sicherheitstechnologie GmbH filed Critical EVVA Sicherheitstechnologie GmbH
Publication of EP4353926A1 publication Critical patent/EP4353926A1/fr
Pending legal-status Critical Current

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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
    • E05B27/0057—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance
    • E05B27/0071—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance by means preventing opening by using the bump-technique

Definitions

  • the invention relates to a cylinder lock with a cylinder core rotatably mounted in a cylinder housing with a key channel for receiving a key.
  • the object of the invention is to solve this problem and to provide a cylinder lock which is robust against the application of the impact method.
  • a cylinder lock according to the invention has a cylinder core rotatably mounted in a cylinder housing with a key channel for receiving a key.
  • Core pin bores running radially in the cylinder core with core pins mounted in them so that they can be moved and preloaded are provided.
  • Housing pin bores running radially in the cylinder housing with housing pins mounted in them so that they can be moved and preloaded are provided.
  • Each core pin bore is assigned to a housing pin bore and each core pin is assigned to a housing pin.
  • a dividing plane is formed between the cylinder core and the cylinder housing such that the cylinder core is rotatable relative to the cylinder housing when the dividing plane is free.
  • At least one enlarged core pin bore is provided, which widens into a circumferential groove on the outer circumference of the cylinder core.
  • This circumferential groove is at least as wide as the housing pin that is mounted in the housing pin bore that is assigned to the enlarged core pin bore.
  • the housing pin can enter the circumferential groove when the impact method is applied. However, when the cylinder core is further rotated, the housing pin then gets caught on an edge of the circumferential groove, so that the cylinder core cannot be fully rotated when the impact method is applied.
  • the extent of the circumferential groove on the outer circumference of the cylinder core can be so short that the housing pin belonging to the circumferential groove cannot fully enter the circumferential groove if the core pin associated with the housing pin is located on the division plane.
  • the circumferential groove on each side of the core pin is shorter than the diameter of the associated housing pin. This ensures that when the cylinder core is operated using a key with locking authorization, the housing pin does not accidentally enter the circumferential groove but remains in the division plane.
  • the length of the circumferential groove corresponds to a maximum of three times the diameter of the extended core pin bore. If the circumferential groove is designed symmetrically to the core pin bore, this essentially defines the maximum extension of the circumferential groove in the circumferential direction. In practice, a length of the circumferential groove in the range of twice the diameter of the extended core pin bore has proven to be particularly advantageous.
  • the enlarged core pin bore is arranged essentially centrally along the extension along the circumferential groove.
  • the circumferential groove is located on both sides of the enlarged core pin bore and extends over a maximum of 90% of the diameter of the enlarged core pin bore.
  • the circumferential groove can be at least 80% longer than the diameter of the enlarged core pin bore. This dimensioning is advantageous because it ensures that in the event of a break-in attempt, the corresponding housing pin will most likely get caught in the circumferential groove, thus blocking further rotation of the cylinder core.
  • the enlarged core pin bore is arranged essentially centrally along the extension of the circumferential groove, wherein the circumferential groove extends on both sides of the enlarged core pin bore by at least approximately 20% of the diameter of the enlarged core pin bore. This dimensioning has also proven to be particularly advantageous in practice.
  • the circumferential groove can have a smaller depth than the extended core pin bore, preferably a depth that corresponds to approximately 20% to 50% of the depth of the extended core pin bore. This dimensioning enables a housing pin to safely penetrate and remain in the circumferential groove in the event of a break-in attempt and thus prevents the lock from being unlocked, even if an attempt is made to manually push the housing pin out of the circumferential groove and back into the housing.
  • the core pin associated with the enlarged core pin bore can have a stop shoulder running around the circumference at its end facing the cylinder housing.
  • the stop shoulder can be designed in particular as a collar or bead running around the tip of the core pin.
  • the stop shoulder interacts with an edge of the circumferential groove in such a way that the radial movement of the core pin in the enlarged core pin bore is limited.
  • This design is advantageous because it limits the movement of the core pin in the enlarged core pin bore. This results in two advantages: Firstly, it can ensure that the core pin does not protrude too far into the key channel, so that it offers little surface area for an adapter key to attack. In addition, the impulse transmitted to the core pin when the impact method is used is limited by the short length of the path covered by the core pin.
  • the cylinder core can have two or more scanning positions in the insertion direction of a key, wherein the enlarged core pin bore in the insertion direction is preferably not arranged at the first scanning position.
  • an extended core pin can be provided at a core pin bore other than the extended core pin bore, which is longer than the core pin associated with the extended core pin bore.
  • a striking key designed to drive a short core pin down to the division plane will inevitably drive a long core pin down into the housing, so that the division plane is again blocked.
  • At least one further core pin can have a stop shoulder which is preferably longer than the stop shoulder of the core pin associated with the extended core pin bore.
  • At least one of the housing pins has an annular step at least on its end facing the cylinder core.
  • the housing pin can have an annular step on both ends. This can ensure that the housing pin better blocks rotation of the cylinder core when the impact method is used.
  • the depth of the circumferential groove can preferably be greater than the extent of the step at the end of the housing pin facing the cylinder core. This ensures that the step of the housing pin penetrates completely into the circumferential groove when the impact method is used. This also means that the housing pin can better block the cylinder core from twisting when the impact method is used.
  • Fig. 1a is a schematic three-dimensional representation of an embodiment of a cylinder lock according to the invention.
  • a cylinder lock 1 with a cylinder core 2 rotatably mounted in the cylinder housing 3.
  • the cylinder core 2 has a key channel 11 for receiving a key (not shown).
  • core pin holes 4 and 4' run radially with core pins 5 and 5' mounted therein in a displaceable and pre-tensioned manner, as well as an extended core pin 5".
  • Housing pin bores 6 and 6' also run through the cylinder housing 3. Housing pins 7 and 7' are mounted in the housing pin bores 6 and 6' and are movable and positioned in front. Some of the housing pins 7, 7' have an annular step 12 at the end facing the cylinder core 2. These housing pins 7, 7' also have an annular step 12 at the end facing away from the cylinder core 2. However, a housing pin without this step is also provided.
  • Each of the core pin bores 4 and 4' is assigned to a housing pin bore 6 and 6'.
  • Each core pin 5 and 5' is assigned to a housing pin 7 and 7'. This forms a division plane between the cylinder core 2 and the cylinder housing 3, so that the cylinder core 2 can rotate relative to the cylinder housing 3 when the division plane is free.
  • An extended core pin bore 4' is provided, which is located on the outer circumference of the cylinder core 2.
  • the core pin bore 4' expands into a circumferential groove 8.
  • This circumferential groove 8 is at least as wide as the housing pin 7' that is mounted in the associated housing pin bore 6'.
  • Fig. 2a - 2b a schematic sectional view of the embodiment of Fig. 1a using a locking key.
  • a cylinder lock 1 with a cylinder core 2 rotatably mounted in the cylinder housing 3.
  • the cylinder core 2 has a key channel 11 for receiving a key (not shown).
  • a radial core pin bore 4' runs with a core pin 5' that can be moved and pre-tensioned therein.
  • a housing pin bore 6' runs in the cylinder housing 3.
  • the core pin bore 4' is assigned to the housing pin bore 6'.
  • a housing pin 7' that can be moved therein and is pre-tensioned with a spring is provided in the housing pin bore 6'.
  • the housing pin 7' has an annular step 12 at the end facing the cylinder core 2.
  • the core pin 5' is assigned to the housing pin 7'.
  • a dividing plane is formed between the cylinder core 2 and the cylinder housing 3, so that the cylinder core 2 can be rotated relative to the cylinder housing 3 when the dividing plane is free.
  • the expanded core pin bore 4' expands into a circumferential groove 8 on the outer circumference of the cylinder core 2.
  • the circumferential groove 8 is at least as wide as the housing pin 7' that is mounted in the housing pin bore 6'. As a result, the housing pin 7' can penetrate into the circumferential groove 8 even if the cylinder core 2 is slightly rotated relative to the cylinder housing 3.
  • Fig. 3a - 3b shows a schematic sectional view of the embodiment of Fig.1a using a non-locking key.
  • the illustration contains essentially the same elements as Fig. 2a - 2b , with the difference that the case of a key that does not have locking authorization is shown.
  • the housing pin 7' projects into the circumferential groove 8, which is located on the outer circumference of the cylinder core 2. In the case shown, no free division plane is formed, so that the cylinder core 2 cannot be rotated relative to the cylinder housing 3. When the impact method is used and the cylinder core 2 is simultaneously rotated relative to the cylinder housing 3, the housing pin 7' remains caught in the circumferential groove 8 and cannot be removed from the circumferential groove 8 due to its spring preload.
  • the circumferential groove 8 on the outer circumference of the cylinder core 2 is so long that it is not possible for the housing pin 7' to enter the circumferential groove 8 if the core pin 6' associated with the housing pin 7 ⁇ is located on the division plane. Furthermore, the extended core pin bore 4' is arranged essentially centrally along the extension of the circumferential groove 8. The circumferential groove 8 extends on both sides of the extended core pin bore 4 ⁇ by approximately 50% of the diameter of the extended core pin bore 4'. As a result, the circumferential groove 8 is approximately twice as long as the diameter of the extended core pin bore 4', and yet it is ensured that the housing pin 7 ⁇ does not inadvertently enter the circumferential groove 8.
  • the depth of the circumferential groove 8 in this embodiment corresponds to approximately 20% of the depth of the enlarged core pin bore 4'.
  • the core pin 5' has a circumferentially extending stop shoulder 9 at its end facing the cylinder housing 3. This interacts with an edge of the circumferential groove 8 in such a way that the movement of the core pin 5' in the enlarged core pin bore 4' is limited, in a region that corresponds approximately to the depth of the circumferential groove 8.
  • the depth of the circumferential groove 8 is greater than the extension of the step 12 at the end of the housing pin 7' facing the cylinder core 2. This ensures, as in Fig. 3b It can be seen that the step 12 can penetrate completely into the circumferential groove 8 and counteracts an unauthorized radial displacement of the housing pin 7' from the circumferential groove 8.
  • the invention is not limited to the embodiment shown here, but encompasses all cylinder locks within the scope of the following patent claims.
  • the invention is not limited to the use of cylindrical core pins, but can also be used when using other types of locking elements.

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  • Pistons, Piston Rings, And Cylinders (AREA)
EP23203405.8A 2022-10-14 2023-10-13 Serrure cylindrique Pending EP4353926A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT507972022 2022-10-14

Publications (1)

Publication Number Publication Date
EP4353926A1 true EP4353926A1 (fr) 2024-04-17

Family

ID=88412290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23203405.8A Pending EP4353926A1 (fr) 2022-10-14 2023-10-13 Serrure cylindrique

Country Status (1)

Country Link
EP (1) EP4353926A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1739964A (en) * 1928-12-13 1929-12-17 Walter D Hainline Pin-tumbler lock
US2111098A (en) * 1937-12-29 1938-03-15 Segal Samuel Pickproof lock
US4078406A (en) * 1976-09-24 1978-03-14 Benjamin D. Pollack Pin tumbler lock with anti-impressioning feature
GB2239040A (en) * 1989-11-21 1991-06-19 Rolls Royce Motor Cars Pick-resistant cylinder lock
EP1746228A2 (fr) * 2005-07-22 2007-01-24 Geminy Solutions AG Serrure cylindrique avec protection contre les manipulations par impacts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1739964A (en) * 1928-12-13 1929-12-17 Walter D Hainline Pin-tumbler lock
US2111098A (en) * 1937-12-29 1938-03-15 Segal Samuel Pickproof lock
US4078406A (en) * 1976-09-24 1978-03-14 Benjamin D. Pollack Pin tumbler lock with anti-impressioning feature
GB2239040A (en) * 1989-11-21 1991-06-19 Rolls Royce Motor Cars Pick-resistant cylinder lock
EP1746228A2 (fr) * 2005-07-22 2007-01-24 Geminy Solutions AG Serrure cylindrique avec protection contre les manipulations par impacts

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