EP0246980B1 - Cadenas à combinaison - Google Patents

Cadenas à combinaison Download PDF

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Publication number
EP0246980B1
EP0246980B1 EP19870401156 EP87401156A EP0246980B1 EP 0246980 B1 EP0246980 B1 EP 0246980B1 EP 19870401156 EP19870401156 EP 19870401156 EP 87401156 A EP87401156 A EP 87401156A EP 0246980 B1 EP0246980 B1 EP 0246980B1
Authority
EP
European Patent Office
Prior art keywords
padlock
core
branch
combination
ferrule
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 - Lifetime
Application number
EP19870401156
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0246980A1 (fr
Inventor
Jacques Lenotre
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.)
Thirard SAS
Original Assignee
Thirard 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 Thirard SAS filed Critical Thirard SAS
Publication of EP0246980A1 publication Critical patent/EP0246980A1/fr
Application granted granted Critical
Publication of EP0246980B1 publication Critical patent/EP0246980B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E05B37/00—Permutation or combination locks; Puzzle locks
    • E05B37/02—Permutation or combination locks; Puzzle locks with tumbler discs or rings arranged on a single axis, each disc being adjustable independently of the others
    • E05B37/025—Permutation or combination locks; Puzzle locks with tumbler discs or rings arranged on a single axis, each disc being adjustable independently of the others in padlocks

Definitions

  • the present invention relates to a combination padlock according to the preamble of claim 1.
  • the padlocks conventionally include a body and a U-shaped handle, a first branch of which forms a pivot axis and the second branch of which, when the padlock is closed, is immobilized in a cell of the body, as well as a series of ferrules rotatably mounted around the pivot axis, making it possible to form the combination to open the padlock, or to jam it after closing the padlock.
  • the invention relates more specifically to combination padlocks in which the ferrules are mounted for rotation about the pivot axis formed by the first branch of the U, and each of which is coupled in rotation to a respective core provided, in an angular position. selected, an unlocking groove cooperating with a respective lug formed on this first branch.
  • the padlocks of the aforementioned type that is to say in which the ferrule-core assemblies are mounted coaxial with one of the branches of the handle
  • the padlocks of the aforementioned type provide either for disassembly of the various elements of the padlock (which allows direct access to the cores), either a push-button system or the like to ensure the desired decoupling.
  • this padlock is not very convenient to use and in addition its structure does not in any way allow the manufacture of a padlock from a monobloc body, machined in the mass: the padlock of this prior art must effect include an interior cavity to accommodate a number of organs, and further the fact that the sleeves are contiguous requires to realize the body in two parts.
  • the one-piece body is imposed, both because of its obviously superior aesthetics (absence of rivets, attractive appearance of the piece in polished solid metal , ...) only for technical reasons, due to the difficulty of accommodating and assembling a large number of parts in a two-part body.
  • the invention proposes a new combination padlock structure allowing a change of the combination which is both simple (absence of disassembly of the padlock and recourse to an external accessory) and safe (no risk of jamming the combination inadvertently when it was changed).
  • the structure of the invention allows without any difficulty the production of a padlock with a one-piece body, giving the latter an excellent external appearance from the point of view of aesthetics; nevertheless, the present invention is not limited to the padlock with one-piece body, and it remains possible to apply it to padlocks with body in two parts for a more economical embodiment (it will however be noted that, in the latter case, the cavity inside the body plays no role insofar as it does not house any functional element of the system).
  • the system of the invention does not require any increase in the dimensions of the padlock, so that it is possible to make padlocks according to the invention having the same dimensions as conventional padlocks, even very small; in other words, the improvement of the invention does not in any way prevent the production of miniature padlocks such as those used for luggage and leather goods.
  • a padlock is provided according to the preamble of claim 1, characterized in that the cores are mutually disjoint and by an elastic means disposed between each core and each ferrule, this elastic means urging, at rest, the core in a position of coupling to the ferrule, and being capable of being compressed under the effect of an axial pressure exerted on the first branch when the padlock is in the unlocked position and the handle to said selection position.
  • means are also provided for preventing the modification of the combination in any pivoting position of the handle different from a predetermined selection position.
  • these means comprise a ring provided with a selection groove cooperating with an additional lug formed on the first branch.
  • the ring is preferably also provided with a locking groove cooperating with the additional lug so as to allow the insertion of the handle when the latter is in the angular position corresponding to the closing of the padlock. .
  • each core comprises a positioning notch cooperating with the respective lug of the first branch and making it possible, when the padlock is in the unlocked position, to authorize insertion towards the selection position of the first branch only if the ferrule-core assemblies all remained aligned according to the combination allowing the opening of the padlock.
  • each core can have a locking lug cooperating with a groove in the body, so as to immobilize the core in rotation relative to the body when the handle is brought into the selection position.
  • the core locking groove formed in the body is advantageously extended by the locking groove, the latter having an outlet outside the body of the padlock so that, in the open position of the padlock and only in this position but with the ferrule-core assemblies which have not remained in alignment according to the combination which enabled the padlock to be opened, it is possible to thread by said outlet a needle or the like allowing, by probing and successive rotations of the ferrule-core assemblies, to find the alignment of the grooves and consequently to recognize said combination.
  • This feature ensures total security by allowing the user to find the combination he would have forgotten (provided of course that the padlock is in the open position), especially in the particular case where he has just modified the combination but wishes to check before closing the padlock, either because of the fear of improper handling, or following inadvertent interference of the ferrules just after changing the combination.
  • the body can advantageously be formed from a single piece machined in the mass and comprising a series of notches each housing a ferrule-core assembly at a distance from the assembly (s). adjacent ferrule-core.
  • this can be in particular a spiral conical spring, an elastomer ring whose section allows crushing by the cores, or any other known elastic means.
  • the padlock is shown in the closed position: it comprises a body 10, a handle 20, and a series of ferrules 30 on which are engraved numbers or other characters allowing the user to form the combination allowing the release of the handle.
  • This one-piece body 10 comprises a cell 11 allowing the locking of the handle of the padlock, as well as a series of notches 12 intended to accommodate the ferrules and defining between them thicknesses of material 13 keeping the different ferrules at a distance.
  • the handle 20, in the shape of a U, comprises a first branch 21 forming a pivot axis, and a second branch 22 which is received, in the locked locking position, in the socket 11.
  • the branch 21 carries a plurality of lugs 23 in number equal to that of the ferrules, as well as an additional lug 24 whose role will be explained below.
  • Each ferrule 30 comprises a plurality of peripheral housings 31 (FIG. 7) allowing the coupling with homologous reliefs 55 (FIGS. 10 and 11) of a core 50 housed inside the ferrule: in this way, and so conventional, there are as many possible coupling positions for each ferrule-core assembly as there are housings 31, each position corresponding to one of the digits of the combination his.
  • the ferrule-core assemblies are held in the coupling position by the pressure exerted by an elastic means 40, such as a spring, so that, at rest, ferrules and cores are always coupled inseparably.
  • This elastic means is for example a conical spiral spring, illustrated in isolation in FIG. 8.
  • the padlock is assembled by fitting ferrule-core-spring assemblies in the notches 12 then inserting the handle 20 (to allow the passage of the pins 23 and 24, a groove 14 is provided in the upper part, which is of course only necessary if the padlock is made with a one-piece body). Finally, the assembly is blocked by insertion of a ring 60 for changing the combination, the role of which will be explained below, and of a closure ring 16, for example forcibly pressed in, and which can be considered to be an integral part. of the one-piece body after its installation.
  • each core 50 comprises, in addition to the reliefs 55 mentioned above and allowing coupling with the ferrule, a single unlocking groove 51 formed over the entire height of the core , as well as locking notches 52 or "false notches” preventing the position of the groove 51 from being regained by simple probing.
  • the core further comprises a selection notch 53 formed inside the core and over only part of its height, as well as a locking lug 54 formed at the outer periphery; the roles of this notch 53 and of this lug 54, which are used for the change of combination, will be explained below.
  • this level Z is generally a level intermediate between levels X and Y corresponding respectively to the locked position and to the unlocked position of the padlock.
  • the lugs 23 of the branch 21 of the handle engage in the respective selection notches 53 of the cores, and the locking lugs 54 of the cores come to engage in a homologous longitudinal groove 15 formed inside the opening of the body.
  • the cooperation between the selection groove 62 and the lug 24 provides additional immobilization of the handle relative to the body.
  • these different means for immobilizing in relative rotation prevent any further depression of the handle in a position other than the position imposed for this purpose, that is to say with the ferrule-core assemblies in the position having enabled opening the padlock and with the handle exactly turned to the position illustrated in FIG. 3a: this avoids any accidental modification of the combination by a false maneuver.
  • Figures 12 and 13 illustrate variants of the elastic means, which can be used in place of the conical spiral spring shown in Figure 8: in Figure 12 we used, for each ferrule-core assembly, a plurality of small cylindrical springs arranged at the periphery of the core, and in FIG. 13, the springs have been replaced by a ring made of elastomeric material, the cross section of which (for example cruciform, as illustrated in FIG. 13) allows a certain elastic crushing, with a stroke comparable to that obtained with springs.

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  • Preventing Unauthorised Actuation Of Valves (AREA)
EP19870401156 1986-05-22 1987-05-22 Cadenas à combinaison Expired - Lifetime EP0246980B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8607308A FR2599076B1 (fr) 1986-05-22 1986-05-22 Cadenas a combinaison
FR8607308 1986-05-22

Publications (2)

Publication Number Publication Date
EP0246980A1 EP0246980A1 (fr) 1987-11-25
EP0246980B1 true EP0246980B1 (fr) 1990-03-28

Family

ID=9335490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870401156 Expired - Lifetime EP0246980B1 (fr) 1986-05-22 1987-05-22 Cadenas à combinaison

Country Status (4)

Country Link
EP (1) EP0246980B1 (es)
DE (1) DE3762057D1 (es)
ES (1) ES2013768B3 (es)
FR (1) FR2599076B1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG130960A1 (en) * 2005-09-16 2007-04-26 Path Line Ngaes Holdings Ltd Combination lock with the built-in password reset unit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3386271A (en) * 1966-05-20 1968-06-04 Coats & Clark Combination padlock
US3410121A (en) * 1966-12-13 1968-11-12 Coats & Clark Resettable combination padlock
US3720082A (en) * 1971-09-13 1973-03-13 Kidde Co Presto Lock Div Combination padlock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG130960A1 (en) * 2005-09-16 2007-04-26 Path Line Ngaes Holdings Ltd Combination lock with the built-in password reset unit

Also Published As

Publication number Publication date
ES2013768B3 (es) 1990-06-01
FR2599076A1 (fr) 1987-11-27
FR2599076B1 (fr) 1988-09-16
DE3762057D1 (de) 1990-05-03
EP0246980A1 (fr) 1987-11-25

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