EP0064087B1 - Serrure cylindrique de sûreté contre le crochetage - Google Patents

Serrure cylindrique de sûreté contre le crochetage Download PDF

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Publication number
EP0064087B1
EP0064087B1 EP81103287A EP81103287A EP0064087B1 EP 0064087 B1 EP0064087 B1 EP 0064087B1 EP 81103287 A EP81103287 A EP 81103287A EP 81103287 A EP81103287 A EP 81103287A EP 0064087 B1 EP0064087 B1 EP 0064087B1
Authority
EP
European Patent Office
Prior art keywords
lock
key
cylinder
locking means
ward
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.)
Expired
Application number
EP81103287A
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German (de)
English (en)
Other versions
EP0064087A1 (fr
Inventor
Tsao-Keng Huang
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT81103287T priority Critical patent/ATE11317T1/de
Priority to DE8181103287T priority patent/DE3168256D1/de
Priority to EP81103287A priority patent/EP0064087B1/fr
Publication of EP0064087A1 publication Critical patent/EP0064087A1/fr
Application granted granted Critical
Publication of EP0064087B1 publication Critical patent/EP0064087B1/fr
Expired 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
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor

Definitions

  • the present invention concerns a cylinder lock and a key for unlocking this lock, comprising a body with a hook, and locking means to prevent the hook from being pulled out from locked position to unlocked position; a rotatable cylinder with its upper end structured so as to co-operate with the locking means to allow the hook to be pulled out when the cylinder is turned to a certain position; a bush with one of its ends forming a tortuous entrance into which the key can be screwed, said bush being fixedly secured in the body.
  • conventional cylinder keys comprise substantially a planar key with an indented edge, a cylinder, and a body internally provided with a plurality of pin tumblers resiliently retained in a tunnel orienting to the keyway.
  • the resilient means generally springs, which urge the pin tumblers against the notches of a key at a specific level to discriminate if the key is the correct one, are hair-spring thin. After some use accumulation of rust or dirt may lead to failure of such fine parts, thus reducing the life of the lock.
  • a preferred feature of this invention is that the resilient means can be economically a thick metal reeds instead of the springs fabricated by extremely fine wire, thus enhancing the durability and reducing the cost of the manufacture thereof.
  • the cylinder lock according to the invention includes a body, a cylinder, a bush and a key, generally designated by reference numerals (10), (20), (30), and (40) respectively.
  • the body has a bore (11) which receives cylinder (20) and bush (30), the former being rotatable therein, whereas the latter being immovably secured in place, for example by passing a pin (15) through hole (151).
  • Hook (12) has a recess (121), the dimension and the position of which allow one part of ball (13) retained within a hole (14) to enter when the hook is in locked position in blind hole (16) so that it cannot be pull up.
  • Like structure may be formed at the other leg of hook (12). (See Figure 2).
  • cylinder (20) At one end of cylinder (20) there are provided with two opposite recesses (26), each of which is formed by a cutout defined by two intersecting faces (261) (262).
  • face (261) directly opposite to ball (13), i.e. normal to the long axis of hole (14) the clearance between the inner wall of body (10) and the upper end of cylinder is broadest and enough to allow the ball to totally leave recess (121) to free hook (12) so that the latter can be unlocked (see Figure 2).
  • the non-recessed portion (27) urges ball (13) back into recess (121) to lock hook (12).
  • the outer end of bush (30) is provided with a spiral entrance (31) which is structured so that only an object with spiral structure of which the pitch and lead angle substantially coincides with that of the entrance is allowed to be screwed thereinto. Further, to discriminate whether or not the key thus enters is the correct one, the lower end (21) of cylinder (20), which is nested in the upper end of bush (30), forms a plurality of slots (22) spaced apart from each other around the periphery of end (21) and extending along the length of cylinder (20).
  • the end of key (40) forms an enlarged end (42) provided with a plurality of projectors (41) arranged around the periphery thereof, the dimension and position of which projections substantially coincide with the slots (22), and at the site the upper end of bush corresponding to each slot (22) there is a hole (32), through which a ward piece (33) is resiliently urged inwardly to reach one of said slots (22).
  • the projections are preferably ridged extending along the length of said key.
  • ward piece (33) is inseparably fixed to one end of a spring reed (34), the other end of the latter being secured to the outer wall of bush (30) by, for example, welding or by a screw (not shown).
  • spiral groove (43) extending across the projections (41), which spiral groove (43) is bitten into by the helical edge (31 1 ) of spiral entrance (31), thereby allowing the key to be screwed into the bush to reach cylinder.
  • the enlarged end (42) of the key looks like a gear.
  • the width of each projection and the distance between any two adjacent projections may differ greatly at random, depending on the design of the slots (22). As all of the pitch and the lead angle of the spiral entrance, and the position and number of the slots may vary arbitrarily, the probability that a lock happened to be unlocked by the key of another such lock is extremely low, thus ensuring high security and reliability of this invention.
  • An alternative modification of the key (40), designated by (40'), is also feasible. It has a spiral shank (43'), with a length of its front forming a plurality of projections at the outer side.
  • the slots (22) of cylinder (20) and the ward pieces (33) and holes (32) of bush (30) must be arranged in a spiral trajectory instead of a circumference. This is easy to understand, and therefore not illustrated in the drawing.
  • the spiral shank must be structured so that it, before reaching the slots, can be pushed inwardly a short distance in axial direction to fit its projection into mating slots.

Landscapes

  • Lock And Its Accessories (AREA)
  • Centrifugal Separators (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Processing Of Solid Wastes (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Gates (AREA)

Claims (12)

1. Serrure à barillet et clé de déverrouillage de cette serrure comprenant:
- un corps (10) avec un crochet (12) et des dispositifs de verrouillage (13) empêchant de tirer le crochet (12) vers l'extérieur en le faisant passer de la position verrouillée à la position déverrouillée;
- un barillet tournant (20) dont l'extrémité supérieure est structurée de façon à coopérer avec les dispositifs de verrouillage (13) pour permettre de tirer le crochet (12) vers l'extérieur lorsque le barillet (20) est tourné dans une certaine position;
- un douille (30) formant à l'une de ses extrémités une entrée contournée dans laquelle la clé (40, 40') peut être vissée, cette douille (30) étant solidement fixée au corps (10), caractérisé par le fait que
- l'entrée contournée (31) de la douille (30) a une forme en spirale dont le pas et l'angle d'avance correspondent à la spirale existant sur la clé;
- la douille (30) présente une pluralité de gardes qui peuvent pénétrer dans une pluralité de dispositifs de verrouillage femelles pour empêcher la rotation du barillet;
- la clé (40, 40') présente une pluralité de dispositifs de verrouillage mâles pouvant pénétrer dans les dispositifs de verrouillage femelles correspondants lorsque la clé (40, 40') est vissée dans l'entrée en spirale (31) de la serrure et poussée vers l'intérieur de la serrure, ces dispositifs de verrouillage mâles agissant sur les gardes engagées dans les dispositifs de verrouillage femelles de façon à supprimer l'effet des gardes et à permettre la rotation du barillet (20).
2. Serrure et clé selon la revendication 1, dans lesquelles les dispositifs de verrouillage empêchant de tirer le crochet vers l'extérieur sont constitués d'une bille (13) pouvant être ou non maintenue dans un orifice (14) du corps (10) en communication avec un évidement (121) ménagé dans un bras du crochet, de sorte que si la serrure est en position verrouillée, une partie de cette bille (13) est poussée par l'extrémité supérieure du barillet (20) et pénètre dans l'évidement et si la serrure est en position déverrouillée, cette bille est complètement dégagée de l'évidement (121).
3. Serrure et clé selon l'une des revendications 1 ou 2, dans lesquelles l'extrémité supérieure du barillet (20) présente au moins une portion dégagée pour permettre à cette bille (13) de pénétrer quand le barillet (20) est tourné en position déverrouillée.
4. Serrure et clé selon la revendication 1, dans lesquelles le dispositif de garde est constitué d'une pluralités de gardes (33) poussées de façon élastique à s'engager dans des dispositifs femelles de verrouillage dudit barillet (20).
5. Serrure et clé selon la revendication 1, dans lesquelles les moyens de verrouillage femelles sont constitués d'une pluralité de fentes (22) disposées sur la pourtour du barillet (20), orientées dans le sens de l'axe et s'ouvrant à l'extrémité inférieure dudit barillet.
6. Serrure et clé selon l'une des revendications 1, 4 ou 5 dans lesquelles les dispositifs de verrouillage mâles sont constitués d'une pluralité de parties en saillie (41) correspondant aux fentes (22) et ont une structure telle que si l'une des parties en saillie (41) s'engage dans la fente correspondante (22), la garde correspondante (33) est repoussée vers l'extérieur et n'empêche plus la rotation du barillet (20).
7. Serrure et clé selon l'une des revendications 1, 4, 5 ou 6 dans lesquelles la douille 30 présente un orifice à chaque position d'une garde (33) pour permettre à cette dernière de passer par cet orifice.
8. Serrure et clé selon l'une des revendications 1 ou 4, dans lesquelles chacune des gardes (33) est fixée à une lame de ressort elle-même maintenue sur la paroi extérieure de la douille et poussant de façon élastique la garde vers la fente.
9. Serrure et clé selon la revendication 6, caractérisées par le fait que les parties en saillie (41) sont constituées d'une pluralité de nervures orientées sur la longueur de la clé (40) et espacées autour d'une partie élargie voisine de l'extrémité de la clé (40).
10. Serrure et clé selon la revendication 9, dans lesquelles la partie élargie de la clé (40) présente une nervure en spirale (43) coupant les nervures; la largeur la profondeur, le pas et l'angle d'avance de cette nervure (43) étant tels qu'ils permettent de visser la clé dans l'entrée en spirale (31) de la serrure.
11. Serrure et clé selon la revendication 1, caractérisées par le fait que la partie antérieure de la clé (40') est une tige en spirale dont au moins une portion de la longueur présente une pluralité de parties en saillies correspondant aux fentes du barillet, la dimension, le pas et l'angle d'avance de cette tige étant tels que la clé puisse être vissée dans la serrure par l'entrée en spirale (31) et ensuite poussée dans la direction axiale sur une certaine distance de façon que ses parties en saillie puissent pénétrer dans les fentes correspondantes (22) dudit barillet (20).
12. Serrure et clé selon la revendication 1, dans lesquelles les caractéristiques de la spirale de l'entrée de la clé peuvent correspondre à une rotation dans le sens des aiguilles d'une montre ou dans le sens inverse vue depuis l'extrémité par laquelle on tient la clé.
EP81103287A 1981-04-30 1981-04-30 Serrure cylindrique de sûreté contre le crochetage Expired EP0064087B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT81103287T ATE11317T1 (de) 1981-04-30 1981-04-30 Auftastsicheres zylinderschloss.
DE8181103287T DE3168256D1 (en) 1981-04-30 1981-04-30 Cylinder lock resistant to picking
EP81103287A EP0064087B1 (fr) 1981-04-30 1981-04-30 Serrure cylindrique de sûreté contre le crochetage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81103287A EP0064087B1 (fr) 1981-04-30 1981-04-30 Serrure cylindrique de sûreté contre le crochetage

Publications (2)

Publication Number Publication Date
EP0064087A1 EP0064087A1 (fr) 1982-11-10
EP0064087B1 true EP0064087B1 (fr) 1985-01-16

Family

ID=8187693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103287A Expired EP0064087B1 (fr) 1981-04-30 1981-04-30 Serrure cylindrique de sûreté contre le crochetage

Country Status (3)

Country Link
EP (1) EP0064087B1 (fr)
AT (1) ATE11317T1 (fr)
DE (1) DE3168256D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0189147A1 (fr) * 1985-01-18 1986-07-30 John F. Masoncup Cadenas avec installation d'alarme audible et/ou non audible actionnée par un pilon

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007030942A1 (fr) * 2005-09-15 2007-03-22 Pinhead Components Inc. Systeme de verrouillage a acces par cle cache

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE179910C (fr) *
DE593541C (de) * 1934-02-28 Emil Gross Schluessel fuer Sicherheitsschloesser
US1526728A (en) * 1923-11-23 1925-02-17 Wagner Julius Stanley Lock
US1849070A (en) * 1928-10-15 1932-03-15 Buehner Christian Padlock
US2460551A (en) * 1945-06-16 1949-02-01 Gunnar E Swanson Unitary tumbler cylinder lock
US3320783A (en) * 1966-12-09 1967-05-23 Chicago Lock Co Key for an axial tumbler type lock
US4138868A (en) * 1977-08-19 1979-02-13 Richards Sr Frederick F Replaceable cylinder padlock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0189147A1 (fr) * 1985-01-18 1986-07-30 John F. Masoncup Cadenas avec installation d'alarme audible et/ou non audible actionnée par un pilon

Also Published As

Publication number Publication date
EP0064087A1 (fr) 1982-11-10
DE3168256D1 (en) 1985-02-28
ATE11317T1 (de) 1985-02-15

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