EP4370763A1 - Clé ou ébauche de clé, procédé de production et système de fermeture - Google Patents

Clé ou ébauche de clé, procédé de production et système de fermeture

Info

Publication number
EP4370763A1
EP4370763A1 EP22786771.0A EP22786771A EP4370763A1 EP 4370763 A1 EP4370763 A1 EP 4370763A1 EP 22786771 A EP22786771 A EP 22786771A EP 4370763 A1 EP4370763 A1 EP 4370763A1
Authority
EP
European Patent Office
Prior art keywords
key
section
key element
element according
flat
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
EP22786771.0A
Other languages
German (de)
English (en)
Inventor
Benjamin Gugerli
Markus Kornhofer
Christian Raimann
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.)
Dormakaba Austria GmbH
Original Assignee
Dormakaba Austria 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 Dormakaba Austria GmbH filed Critical Dormakaba Austria GmbH
Publication of EP4370763A1 publication Critical patent/EP4370763A1/fr
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E05B19/0041—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key
    • E05B19/0052—Rectangular flat keys
    • 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
    • E05B27/0003—Details
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles

Definitions

  • the invention relates to a key element, namely a mechanical key or key blank, a method for producing such a key element, and a locking system with a lock cylinder and key element.
  • Lock cylinders have a stator non-rotatably attachable to a lock (sometime called “cylinder housing”) and a rotor (sometime called “cylinder core”) rotatable about the axis of the lock cylinder upon insertion of a matching key.
  • the turning of the rotor moves output means, which are used to actuate a bolt or other means related to the desired function of the lock cylinder.
  • a ramp surface must be provided at the front end of the key, i.e. the key tip, for example by the key being rounded towards the tip or designed to taper flat towards the front.
  • the manufacturer of the locking system will usually deliver key blanks to specialist departments ex works.
  • the key blanks have, for example, locking system-specific security features and, in some cases, coding that is individualized for the relevant department, for example in the form of a profile.
  • the specialist department will then create customized keys for its customers by adding coding holes to the key blanks.
  • the security features already on the key blank which differ from mere coding holes, are generally particularly advantageous, since they are less easily copied by unauthorized key copiers than coding holes in the flat side of the key, thus ensuring that only authorized bodies supplied with blanks by the manufacturer can produce keys .
  • the shape of the key tip is such a security feature that is already present on the key blank and therefore cannot be copied with key-cutting machines.
  • a ramp surface on the tip of the key can make the production of mechanical flat keys more expensive because, in addition to punching out the outer contour and milling in grooves as a profile, it requires additional, more complex processing steps. In addition, it can result in a sharp edge being formed at the tip of the key, which can be detrimental both in terms of ease of use and in terms of wear and tear over the years.
  • the invention relates to a key element (key or key blank) with a key bow and a key shaft extending along a key axis from the key bow to a front key tip with two parallel flat sides and two opposite narrow sides.
  • the key shank On the side of the key tip, ie on the front, the key shank has a run-on surface. This extends over more than half the thickness of the key, i.e. at least one lateral position (in particular corresponding to the position at which the main row of pins is arranged in the locking system) the ramp surface protrudes from one of the flat sides through the central plane between the flat sides to a front side Attachment at the tip of the key or to the side of it on the front of the key.
  • the run-on surface can extend from the front end of the key, which forms the contour, to a transition into the flat side. Due to the fact that it reaches at least partially below a central plane of the key shank on the front side, pins with a smaller diameter and/or with only slightly rounded radial inner end that reach particularly far into the key channel cannot block insertion of the key.
  • key tip refers to the front end of the key or key blank. The term makes no statement about the shape of the front end, i.e. it does not have to be pointed in particular.
  • the key element has a special contour on the front.
  • the contour In a projection perpendicular to the flat sides, the contour first and foremost forms a central, straight first section and, towards one side, a second, at least partially curved section that runs to the narrow side and merges into it.
  • This second section is set back from an arcuate line, which arcuate line is defined as having a constant radius and having a tangent coinciding with the first section at a transition to the first section and a tangent coinciding with the narrow side at a transition to the narrow side .
  • the curved line is a hypothetical, imaginary curved line, ie the contour of the key does not have this curved line, but is offset to the rear in relation to it.
  • the key element can in particular be a reversible key blank or a reversible key, ie at least the key shank is then symmetrical with respect to a rotation of the key element by 180° about the key axis.
  • the contour will be symmetrical, especially when the key element is a reversible key element. If there is symmetry, there is a second section of the type defined above on both sides. All statements made in this text about the shape of the contour are to be understood in such a way that they also apply in particular to correspondingly symmetrical contours, and all statements in this text about the shape of the Key elements apply in particular to reversible key elements, i.e. key elements whose shank is symmetrical with respect to a rotation of 180° around the key axis. The key bow can also have this symmetry, but this is not necessary for the function.
  • This contour with a combination of a straight section at the front with a lateral section that is curved at least in some areas but is set back compared to a curved line of the type mentioned has proven to be advantageous.
  • the front straight section allows a range of keyings to be maximized near the key axis - i.e. near the center both in terms of space on the key and possible depth of keying holes (keyword 'paracentricity').
  • the shape with the section that is curved at least in certain areas is well suited for the efficient production of a stamped blank by means of stamping.
  • the run-on surface can in particular be flat and/or it can be inclined in two directions in particular relative to the normal to the flat side, i.e. a normal to the run-on surface is inclined both forwards and to the side in relation to the normal to the flat side.
  • This condition applies, for example, at least to the positions with that distance (y-position) from the vertical plane through the key axis (vertical center plane) in which the pins of the main row of pins touch the ramp surface when the key is inserted.
  • This has the effect that the pins at their radially inner end acentrically, i.e. not in the middle in relation to their pin axis, but on a flank hit the run-on surface.
  • the y-position of the main row of pins is defined by the lock cylinder, but also on the key element. If the key element is a key, this y-position can be easily determined: it corresponds to the position of the row of coding holes or, if there are several such rows, the row with the most and/or deepest coding holes (main row). Is this If the key element is a key blank without the coding holes, the y position of the main row of pins can be determined according to the y position of the main row of coding holes in embodiments as follows: Starting from the vertical plane through the key axis, a reversible key shows through the ramp surface on which side of this vertical plane is the main row.
  • the y-position of the main row of pins may correspond to the y-position of the rib on the corresponding side closest to the vertical plane through the key axis.
  • the second section may have multiple subsections.
  • a first subsection with a first radius of curvature Ri can be present, as well as at least one further subsection that has a second radius of curvature R2 that is larger than Ri, or that is straight.
  • the first sub-section connects to the first section on the front.
  • the radius of curvature Ri of the first sub-section can in particular be smaller than the width b of the area of the key shank between the first section and the narrow side.
  • the second section can have a tangent that coincides with the latter, ie at this transition the contour can be continuously differentiable, thought of as a function, ie it can be “kink-free”.
  • the transition between the second section and the narrow side can also be “kink-free”, ie the tangent to the second section at the transition to the narrow side can coincide with the narrow side.
  • the second section can have the first subsection with the first radius of curvature Ri, a second, straight subsection and a third subsection with the larger radius of curvature R2 in this order from the first section to the narrow side.
  • the second subsection can also be curved instead of straight, with a radius of curvature that is greater than the radii of curvature of the first and third subsections.
  • a preferred feature of the present invention is that instead a front face is defined which is perpendicular to the flat sides and forms a front end of the key shank, the front face merging at both ends into the narrow sides parallel to the key axis.
  • the front surface thus runs from one narrow side with the contour according to the definition according to the invention to the other narrow side.
  • the front face may be continuous or may be broken by grooves running parallel to the key axis to the front end.
  • the front surface can be at least 0.05 mm, preferably at least 0.08 mm, in particular at least 0.12 mm high.
  • the maximum height at its narrowest point can be 0.5 mm or 0.3 mm, for example.
  • the height in this text denotes the extension perpendicular to the flat sides; according to the coordinate system used here, i.e. the expansion in the z-direction.
  • the transition between the ramp surface on the one hand and the front surface on the other hand has a distance in the z-direction (direction perpendicular to the flat sides) from the flat side opposite the ramp surface of at least 0.05 mm, preferably at least 0.08 mm, in particular at least 0.12mm.
  • the maximum distance at the point where the transition comes closest to the opposite flat side can be 0.8 mm, preferably 0.6 mm, particularly preferably 0.4 mm).
  • Both conditions state that no sharp edge can form between the ramp surface on the one hand and the opposite flat side on the other hand, but that on every position along the width (every y-position) there is a distance between the ramp surface and the opposite flat side. This distance is defined by the front surface or, if present, by a groove that interrupts this and extends to the front end.
  • the ramp surface merges into the front surface and the front surface forms an upper or lower edge ("top” or “bottom” are to be understood in relation to the z-direction) of the key shank and/or directly in the flat side goes over.
  • top or “bottom” are to be understood in relation to the z-direction
  • the key tip is one-sided by not being to both Flat sides towards ramp surfaces are available, but only to a flat side, while the front surface is immediately adjacent to the other flat side and merges into it.
  • the ramp surface can be inserted into the front Go over surface and the front surface form an upper or lower edge of the key shank and / or go directly into the flat side.
  • the front face may include an end face at the wrench tip having parallel edges sloping to the planes defined by the flats 21 (and correspondingly to the median plane 19 which is parallel thereto).
  • the parallel edges can in particular have a distance of at least 0.5 mm, in particular at least 0.7 mm.
  • a maximum distance can be 1.5 mm or 1.2 mm, for example.
  • a key element of the type described here can therefore have an end face at the very front, which is preferably perpendicular to the key axis.
  • the shape of the end face may be that of a rhomboid, with long sides oblique to the median plane and short sides perpendicular to the median plane.
  • An end surface on the tip of the key can lie at least between two width sections, behind which the centers of the coding bores are provided in the x-direction.
  • the front surface may comprise a (continuous or discontinuous) transition surface.
  • a first edge of the front surface can be designed as a transition into the flat side and the second edge can run in an arc.
  • the transition surface can, for example, connect to the end surface.
  • an uninterrupted or interrupted transition surface can be provided on both sides of the end surface. The transition surface connects to the end surface towards the middle and to the corresponding side towards the side, but like the end surface it is also perpendicular to the central plane (and correspondingly to the flat sides).
  • the front surface can include a first curved edge and a second curved edge
  • the ramp surface - more precisely: the two symmetrically arranged Auf! surfaces - be arranged in such a way that they are created by removing material using a milling tool with a concave V-shaped milling profile, which is guided diagonally over the tip of the wrench, i.e. in a direction of movement perpendicular to the wrench axis and at an angle different from 0° to the wrench horizontal midplane.
  • the milling tool can be recognized in such a way that there is no sharp edge on the front side of the key, but an end face whose width - perpendicular to the Direction of movement of the milling tool - results from the distance of the rotary axis from the tip of the key during the milling processing step.
  • the key element can be a key, namely a flat key, in particular a reversible key. This has at least the main row of coding bores--other coding bores may be present in addition to the main row.
  • the key element can also be a key blank, in which case a profiling can already be present on the key blank in addition to the ramp surface.
  • the invention also relates to a locking system which, in addition to a key element, also has a lock cylinder matched to this.
  • a lock cylinder has a lock cylinder stator and a lock cylinder rotor with a key channel into which the key shank can be inserted. Coding bores on the key element - if this is a finished key, otherwise as soon as they are attached - can be scanned by pins in the lock cylinder.
  • the pins in the lock cylinder can in particular be tumblers in the lock cylinder rotor, which interact with counter tumblers in the lock cylinder stator and only enable rotation of the lock cylinder rotor if the depth of the coding bores fits.
  • the pins of at least the main row are raised by the ramp surface when the key is inserted .
  • the pins hit the run-on surface in particular acentrically, which is why they can at least partially roll on it when they are pushed in and do not necessarily grind over it.
  • the lock cylinder can also have other pins that scan the coding of the key, in particular profile pins or profile wobble pins.
  • the invention also relates to a method for producing a key element using the principle described above, according to which a preliminary product, optionally before or after the production of the profiling, by means of a milled profile in a single step with the two also described, necessary for a reversible key system, mutually symmetrical ramp surfaces is provided.
  • Coding hole refers to a recess in the key, the dimension of which is chosen based on a desired coding. Coding holes can be created by drilling; however, corresponding indentations produced using other methods are also referred to here as "coding bores".
  • FIG. 1 is a perspective view of a key
  • Figure 2 is a corresponding view of a key blank for making a key of Figure 1;
  • FIG. 3 shows a sectional view of a section of a lock cylinder when a key is inserted
  • FIG. 4 shows a view of the foremost area of the key blank according to FIG. 2;
  • FIG. 5 shows a view of the key blank according to FIG. 2 from the front
  • FIG. 6 shows a schematic representation of a milling tool
  • FIG. 7 shows a view of the key blank according to FIG. 2 from a direction which corresponds to the direction of movement of the milling tool when creating the ramp surfaces;
  • FIG. 9 is a view of another key blank.
  • Figure 1 shows an example of a key 1 with a key bow 11 and a key shank 12.
  • the key 1 is a flat key in which the key shank is essentially non-square in cross section perpendicular to a key axis 10, resulting in two parallel flat sides 21 and two narrow sides 22 with a smaller area than the flat sides 21 are defined.
  • An edge 25 is formed between the flat sides 21 and the narrow sides 22 .
  • Fig. 1 also shows the Cartesian coordinate system used in this text, with the x-direction running parallel to the key axis and the z-direction perpendicular to the flat sides 21.
  • At least one row of coding bores 31 running parallel to the key axis 10 is present on the key shank 12 .
  • the key in the illustrated embodiment also has a profile in the form of grooves 32 running parallel to the key axis.
  • grooves 32 running parallel to the key axis.
  • basic profile grooves which are always the same in the locking system and only exclude keys from other locking systems
  • variation profile grooves which form a code
  • Corresponding ribs 33 result between the grooves 32.
  • the key shown is a reversible key, i.e. the key shank is symmetrical with respect to a rotation of 180° about the key axis 10, and the codes on the front and rear flat side 21 are correspondingly identical.
  • the key can also have a different number of rows of coding holes on the flat sides, e.g. 1, 3, 4, 5 or 6, instead of or in addition to the profiling, and/or it can also have coding holes on the narrow sides 22 have.
  • the key also has a plurality of coding recesses 35 which are formed as cuts along the edge 25 .
  • FIG. 2 shows the key blank from which the key is made by attaching the individual coding bores 31 and optionally coding recesses 35 .
  • the key Toward the key tip 23, the key has a ramp surface 24 sloping forwards, which allows the lock cylinder to have pins (e.g. tumblers) scanning the coding bores, which protrude further into the key channel than up to the central plane.
  • pins e.g. tumblers
  • FIG. 3 shows a schematic section through a lock cylinder 40 with a lock cylinder rotor 43 that can rotate in the lock cylinder stator 44 and has a key channel 45 .
  • the locking cylinder rotor has a plurality of rotor pin bores, each with a pin that forms a tumbler 46, the length of which depends on the coding.
  • Corresponding spring-loaded counter-tumblers 47 are arranged in stator pin bores, which are aligned with the rotor pin bores in a basic position of the rotor, with the lengths of the tumblers 46 and counter-tumblers 47 of each tumbler-counter-tumbler pin pair being able to add up to the same total length in each case.
  • a suitably coded key can align the boundary surface between tumblers and counter tumblers with the shearing surface between rotor and stator and thus make it possible for the rotor to rotate away relative to the stator around the lock cylinder axis, which corresponds to key axis 10 when the key is inserted .
  • the run-on surface is essentially flat. In addition, it not only slopes forwards towards the key tip 23 in the manner of a ramp, but also inclines radially outwards.
  • the normal N to the ramp surface e.g. at least at that y-position which corresponds to the y-position of the row of coding bores 31 or at least one of the rows of coding bores
  • the ramp surface 24 not only causes longer pins protruding into the key channel to be lifted reliably and optionally against a spring force and pushed radially outwards. Rather, it also causes the pins at their radially inner end not to hit the run-on surface centrally (i.e. in the middle in relation to their pin axis), but rather on a flank.
  • the first consequence of this is that the pin is pushed slightly to the side, i.e. in the y-direction, which is why it is guided to a better defined position compared to the prior art, even if there is a small amount of play.
  • the tip (the radially inner end) of the pin does not drag over the ramp surface. Rather, the pin, if it runs radially inward, as shown in FIG.
  • the run-up surface 24 is of particular importance at the position at which the pins of the main row of tumblers run up when the key is inserted. In the case of the key and key blank shown, this corresponds to the position of the first rib 34 seen from the center (d. from the vertical center plane, ie the xz plane through the key axis), see FIG y position substantially below the horizontal center plane 19 (the xy plane through the key axis), which can be seen particularly well in FIG.
  • FIG. 5 shows a view of the key blank 2 from the front, ie from the tip 23 of the key.
  • P is the position of the main row of tumblers—corresponding to the position of the coding bores 31 of the main row, see FIG. 1.
  • the key blank 2 and thus also the key 1 are easier to produce than the prior art from a punched-out preliminary product (punched blank) before or after the profiling has been applied in a single work step. They can be created by a milling tool 51 with a concave V-milling profile (shown schematically in FIG. 6, with axis of rotation 52 and erosive part 53; opening angle of the V-profile: 5), which is at an angle 8 different from 0° to the xy -plane runs across the tip of the key at such a distance that an area of width d remains on the front side.
  • FIG. 7 shows the corresponding milling cutter contour on the key blank.
  • the axis of rotation 52 of the milling tool is set at an angle ⁇ to the vertical (to the z-axis) during the milling machining step.
  • Fig. 5 one can also see that the milling profile is applied in such a way that a strip with a width d (measured perpendicular to the direction of movement) remains at the tip of the wrench. Therefore, there is no sharp edge at the tip of the key, but rather an end surface 26.
  • the width d results from the correspondingly selected milling profile in the illustrated milling profile From was the axis of rotation 52 of the key tip 23 during the milling processing step.
  • the end surface 26 comprises edges which run obliquely to the central plane 19 (perpendicular to the plane of the drawing in FIG. 5) and are parallel to one another, so that the end surface 26 has the shape of a rhomboid.
  • FIG. 8 shows the outer contour 60 of the preliminary product from which the key blank is made in the area of the foremost part of the key shank 12, i.e. in the area of the key tip, viewed from the flat side, i.e. in a projection onto the x-y plane.
  • the outer contour 60 is not changed, at least not significantly, by the milling of the ramp surfaces 24, the application of the profile with the grooves 32 and also by the application of the coding bores and possibly coding depressions, so that the outer contour 60 also corresponds to the outer contour of the bowl blank 2 and the key corresponds to 1.
  • the key 1 is a reversible key, the requirement also applies to the outer contour 60 that it is symmetrical with respect to the key axis 10, i.e. (as a two-dimensional contour) with respect to a central axis.
  • the contour has a straight first section (central section) 61, which is perpendicular to the key axis, and a second section 62, which from the straight first section 61 to the narrow side 22 runs and which is at least partially curved.
  • the second section 62 has three distinguishable sub-sections, namely a first, curved sub-section 63 with a first radius of curvature from the inside outwards Ri, a second straight subsection 64, and a third curved subsection 65 having a second radius of curvature R2 which is greater than the first radius of curvature.
  • the dashed lines in FIG. 8 show an imaginary division between a central area, which is delimited at the front by the straight first sections 61 on both sides, and the two side areas with width b, which are delimited at the front by the second section 62 .
  • FIG. 8 Also shown in FIG. 8 is a hypothetical contour 69 that would result if there were only a single curved section starting from the straight first section (which is advantageous because it allows as much space as possible for the row with the essential coding bores). , whose radius Rb corresponds to the width b, which results from the condition that the tangents at the transitions to the first section 61 and to the narrow side 22 therefore coincide in parallel with the first section 61 and the narrow side 22 (i.e. perpendicular or parallel to the run along the key axis; the contour is intended as a function and can also be continuously differentiated at the transitions). It can be seen that the contour 62 is slightly set back with respect to this hypothetical contour 69, without changing the overall length of the key in the important central area.
  • the hypothetical contour 69 would have a sharp edge at the thinnest points on the front (correspond approximately to the area of the second subsection 64). Such is undesirable. Firstly because the sharp edge can damage trouser pockets or other textiles that come into contact with the key. Second, a sharp edge is also undesirable from the point of view of wear and tear over the years. The setting back of the contour in this area prevents such a sharp edge, which can be seen clearly, for example, in FIG. 4, where the front surface 27 of one of the thinnest (narrowest) points is clearly visible is.
  • the front surface can be at least 0.05 mm, preferably at least 0.08 mm, in particular at least 0.12 mm high (expansion in the z-direction).
  • the front surface 27 also includes a transition surface 28 on the side thereof, which extends from the end surface 26 in an arc to one of the narrow sides 22 and merges into this.
  • the front surface thus runs, for example, uninterruptedly from one narrow side to the other narrow side.
  • the front surface 27 forms a front end of the key shank.
  • the resetting of the contour 60 compared to the hypothetical contour 69 results from the fact that the first subsection 63 has a smaller radius of curvature Ri than the width b and/or that the transition between the first area 61 and the second area forms a slight kink, i.e. that the tangent to the second area 62 at the transition to the first area 61 is not parallel to the first area 61 .
  • at least the condition Ri ⁇ b is met.
  • This condition in turn means that the second region, in addition to the first subsection 63 with the smaller radius of curvature, has at least one further subsection with a larger radius of curvature (third subsection 65) and/or a non-curved subsection (second subsection 64).
  • the ramp surface 24 transitions into the front surface 27 in some areas.
  • the front surface 28 merges directly into the corresponding flat side 21 on the upper or lower side in a width section (laterally; in particular at position P of the main coding row, particularly in the area of the transition surface 28), while on the opposite side, i.e. on the lower or upper side, merges into the ramp surface 24 in this width section.
  • the front surface thus forms an upper or lower edge of the key shank.
  • One edge of each transition surface 28 (in the orientation of Fig. 5 the right edge of the transition surface 28 shown above and the left edge of the transition surface 28 shown below) represents a transition into the respective flat side, and the other edge runs, as can be seen in Fig 5 well sees, arcuate.
  • first and second edges are offset in width (y-direction) from one another;
  • FIG. 9 shows a perspective view of the key shank 12 of a variant of a blank for a reversible key.
  • the features of the key shank described in the present text are designed in such a way that there is symmetry with respect to a rotation of 180° about the key axis.
  • the key blank of Figure 9 differs from the embodiments of Figures 4 and 5 in particular in that on each flat side one of the grooves 32 running parallel to the key axis all the way to the front is arranged in the flat side 21 in such a way that it covers the front surface 27 in the area of the transition surface 28 is interrupted, so that the transition surfaces 28 present on both sides of the end surface 26 are each divided into two sub-surfaces, between which the respective groove 32 lies. Therefore, no narrowest point of the front surface 27 and accordingly no minimum height is defined.
  • the minimum distance a between the transition between the ramp surface and the front surface on the one hand and the plane of the opposite flat side is always the same different from zero and is more than 0.05 mm, preferably at least 0.08 mm, in particular at least 0.12 mm.

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  • Milling Processes (AREA)
  • Lock And Its Accessories (AREA)

Abstract

L'invention concerne une clé ou une ébauche de clé (2) présentant sur sa face avant une surface de contact (24). Celle-ci s'étend sur plus de la moitié de l'épaisseur de la clé, c'est-à-dire que la surface de contact fait saillie à partir d'une des faces planes à travers le plan médian entre les faces planes jusqu'à un appendice avant. La clé ou l'ébauche de clé présente sur sa face avant un contour particulier. Dans une projection perpendiculaire aux faces planes, le contour forme d'abord une première partie rectiligne centrale puis une deuxième partie au moins partiellement curviligne en direction d'une face qui s'étend jusqu'au côté étroit et se confond avec celui-ci. Cette deuxième partie est disposée en retrait par rapport à une ligne courbe uniforme. Cette forme de contour permet d'optimiser la place pour les perçages de codage sur la clé, tout en garantissant que la clé ne présente pas d'arête vive sur la face avant.
EP22786771.0A 2021-09-14 2022-09-13 Clé ou ébauche de clé, procédé de production et système de fermeture Pending EP4370763A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH70268/21A CH718959A1 (de) 2021-09-14 2021-09-14 Schlüsselelement, insbesondere Schlüssel oder Schlüsselrohling, Herstellungsverfahren und Schliesssystem.
PCT/EP2022/075383 WO2023041517A1 (fr) 2021-09-14 2022-09-13 Clé ou ébauche de clé, procédé de production et système de fermeture

Publications (1)

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EP4370763A1 true EP4370763A1 (fr) 2024-05-22

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EP22786771.0A Pending EP4370763A1 (fr) 2021-09-14 2022-09-13 Clé ou ébauche de clé, procédé de production et système de fermeture

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EP (1) EP4370763A1 (fr)
CH (1) CH718959A1 (fr)
WO (1) WO2023041517A1 (fr)

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* Cited by examiner, † Cited by third party
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DE29818143U1 (de) * 1998-10-10 2000-02-17 Bks Gmbh, 42549 Velbert Sicherheitsschlüssel
AU6411200A (en) * 2000-04-11 2001-10-18 Kaba Schliesssysteme Ag Safety turning-key
DE102005024003B4 (de) * 2005-05-25 2007-02-08 Dom Sicherheitstechnik Gmbh & Co Kg Schließzylinder mit einem Schlüssel
UA96465C2 (uk) * 2006-12-21 2011-11-10 Каба Аг Замикальна система з поворотними ключами із секретом
CH716812B1 (de) * 2019-11-18 2023-09-29 Sea Schliess Systeme Ag Schlüsselrohling, Schlüssel, Zylinderschloss und Verfahren zur Herstellung eines Schlüsselrohlings und eines Schlüssels.

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