Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B29/00—Cylinder locks and other locks with plate tumblers which are set by pushing the key in
  • E05B29/0066—Side bar locking
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B29/00—Cylinder locks and other locks with plate tumblers which are set by pushing the key in
  • E05B29/0013—Cylinder locks and other locks with plate tumblers which are set by pushing the key in with rotating plate tumblers
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B29/00—Cylinder locks and other locks with plate tumblers which are set by pushing the key in
  • E05B29/0053—Cylinder locks and other locks with plate tumblers which are set by pushing the key in with increased picking resistance
• • 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
  • E05B19/0047—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key with substantially circular or star-shape cross-section
• • 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
  • E05B19/007—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key with U- or V-shaped cross-section

Definitions

• the present invention relates to a lock comprising a housing with at least one longitudinal groove, a plug and at least one blocking bar, which, in a locked state of the lock, engages into the longitudinal groove, and which, in the unlocked state of the lock, is receivable in a receiving space in the plug so that the plug is rotatable with respect to the housing.
• the blocking bar merely serves for securing the plug such that in the locked state it cannot be rotated with respect to the housing.
• validating elements are provided which are individually configured. This complicates the manufacturing of a lock.
• no specific measures are provided which impede an intended breaking of the lock by extracting the plug.
• a lock according to claim 1 is provided. Also, a locking set according to claim 11 and a method for manufacturing a blocking bar according to claim 12 are provided. The further claims specify additional embodiments of the lock.
• a lock comprises at least one blocking bar, which is configured to define a lock coding associated to the key coding. At least one validating element is provided which is configured to define a portion of the receiving space in the plug, in which the at least one blocking bar is receivable when the key with the correct key coding is inserted into the keyway.
• the at least one blocking bar is provided with an additional functionality of coding the lock. This simplifies the manufacturing of the lock.
• the coding of the lock is defined
• This embodiment has the advantage that, apart from the blocking bar(s), the same components can be used to produce a multiple of locks each having a different coding.
• the receiving space in the plug in which the at least one blocking bar configured to define the lock coding associated to the key coding is receivable in the unlocked state of the lock is different from a straight groove.
• the at least one blocking bar engages into the at least one longitudinal groove, which extends in a longitudinal direction.
• the portion of the at least one blocking bar which portion is receivable in the receiving space in the unlocked state of the lock has a geometric structure which varies along the longitudinal direction to define the lock coding associated to the key coding .
• the at least one blocking bar is configured to cooperate in the locked state with at least one blocking element securing the at least one blocking bar in the at least one longitudinal groove.
• the at least one blocking bar is provided with an additional functionality increasing the coding possibilities and/or the security of the lock.
• the at least one blocking element is integrally formed with the at least one blocking bar.
• the at least one blocking element is formed separately from the at least one blocking bar and is configured as a coding member for reading a key coding.
• the at least one blocking bar contributes to an additional coding of the key.
• At least two blocking elements are provided, one being integrally formed with the at least one blocking bar and one being formed separately therefrom and being configured as a coding member.
• the at least one blocking bar contributes to an increase in the coding possibilities and the security of the lock.
• the blocking bar together with the blocking element if needed may be manufactured in an additive manufacturing process.
• Fig. 1 shows a perspective view of a part of a lock, in which a key is inserted
• Fig. 2 shows a front view of the configuration of Fig. 1 in the locked state of the lock
• Fig . 3 shows a front view of the configuration of Fig. 1 in the unlocked state of the lock
• Fig. 4 shows a side view of a validating element of the lock of Fig. 1;
• Fig. 5 shows a perspective view of a blocking bar and elastic means of the lock of Fig. 1;
• Fig. 6 shows a top view of the blocking bar of Fig. 5;
• Fig. 7 shows an enlarged view of an end of the blocking bar of Fig. 5;
• Fig. 8 shows a perspective view of a part of another embodiment of the lock, in which a key is inserted
• Fig. 9 shows a perspective view of a blocking bar of the lock of Fig. 8.
• Fig. 10 shows an enlarged view of an end of the blocking bar of Fig. 9;
• Fig. 11 shows a perspective view of the housing of the lock of Fig. 8;
• Fig. 12 shows the housing of Fig. 11, wherein an upper part is cut away;
• Fig. 13 shows an enlarged view of an end of the lock of Fig. 8;
• Fig. 14 shows an enlarged view of the lock with the blocking element engaging into a groove in the housing, wherein only part of the latter is shown;
• Fig. 15 shows a front view of the configuration of Fig. 8 in the locked state of the lock
• Fig. 16 shows a perspective view of a part of another embodiment of the lock, in which a key is inserted
• Fig. 17 shows an enlarged view of an end of the lock of Fig. 16;
• Fig. 18 shows a perspective view of a blocking bar of the lock of Fig. 16;
• Fig. 19 shows an enlarged view of an end of the key of Fig. 16
• Fig. 20 shows a front view of the configuration of Fig. 16 in the locked state of the lock
• Fig. 21 shows a front view of the configuration of Fig. 16 in the unlocked state of the lock.
• Fig. 1 shows part of a lock together with a key 70 inserted therein.
• the lock comprises a cap 10, a plug 20, a blocking bar 30, and validating elements 40.
• the lock further comprises a cap 10, a plug 20, a blocking bar 30, and validating elements 40.
• the cap 10 comprises a housing 50 (see Fig. 2), which has a circular cylindrical opening for receiving the components 20, 30, 40.
• the cap 10 may be arranged fully or partly outside of the housing 50.
• the components 10, 20, 30, 40 can be rotated relative to the housing 50 around the rotation axis 11a, whereby a driver (not shown) unlocks or locks the actual locking mechanism (not shown), e.g. a bolt of a door or the like.
• the plug 20 is configured to receive the key 70 and to carry the blocking and validating components 30, 40.
• the plug 20 comprises a keyway 21, which extends in the insertion direction of the key 70 and which serves for receiving the shank 71 of the key 70.
• the plug 20 has a receiving groove 22, which extends alongside of the plug 20 and which serves for receiving the blocking bar 30 in the unlocked state of the lock.
• the blocking bar 30 is preloaded, such that in the locked state it is pushed into a longitudinal groove 52 formed in the housing 50 opposed to the receiving groove 22. Thereby, rotation of the components 10, 20, 30, 40 with respect to the housing 50 is disabled (see groove 52 in Fig. 2 and 3) .
• the pushing force is e.g. produced by elastic means, e.g. in the form of one or more springs 34 (see Fig. 5) .
• the longitudinal groove 52 extends along a longitudinal
• the plug 20 has slits 23, each being arranged tranversally to the rotation axis 11a and serving for receiving an end portion of a validating element 40, so that the latter can cooperate with the blocking bar 30.
• the validating elements 40 are disc-shaped and rotatably arranged on an axle 11 (see Fig. 2), which is at one end attached to the cap 10 and axially fixed in a hole of the plug 20.
• a side portion 47 of a validating element 40 is configured to contact a support face 25 formed on the plug 20 such that the validating element 40 can be rotated only within a predetermined angle range (see Fig. 2) .
• the validating element 40 comprises a first arm 41, which is configured to contact a coding part of the key 70, and a second arm 42, which is configured to cooperate with the blocking bar 30.
• the validating element 40 includes a protrusion 43, which cooperates with an elastic mean, e.g. a spring such as a coil spring (not shown) .
• the plug 20 includes blind holes 24, which are arranged transversally to the axle 11 and radially offset thereto (see Fig. 2) . Said elastic mean is arranged in a blind hole 24 and acts via the protrusion 43 on the validating element 40 so that the latter is pushed in a specific direction, which, in the example according to Fig. 2, is in the clockwise direction.
• validating element 40 senses the inner side of a key
• validating element 40 has a recess 44, which serves for receiving a ridge portion 31 of the blocking bar 30 (see Fig. 3 and 4) .
• the recess 44 is arranged with respect to the rotation axis 11a such that its shape is mirror symmetrical around an axis 44c which goes through the middle of the recess 44 and the rotation axis 11a.
• the second arm 42 may have one or more
• additional recesses 45, 46 which are "false” recesses having no mechanical function, but making it more difficult for someone who tries to pick the lock by finding the correct position of the validating element 40.
• a recess 45, 46 is provided on each side of the recess 44.
• the false recesses 45, 46 are formed such that a ridge portion 31 can be only partially received therein.
• the depth of the recesses 45, 46 is smaller than the depth of the recess 44 and therefore the blocking bar 30 cannot be fully received in the groove 22 to allow free rotation of the components 10, 20, 30, 40 together with the key 70 to be rotated with respect to the housing 50, and thus the sloping flank 36a or 36b of the blocking bar 30 (see Fig. 5) collides with a side of the longitudinal groove 52.
• the key 70 has a handling part, e.g. a bow, to which the key shank 71 is attached.
• the key shank 71 has a semi-closed profile enclosing at least partially the coding part.
• the key shank 70 has side
• a side portion 73, 74 encloses a coding cavity 73a, 74a, in which the key coding is formed, e.g. in form of one or more coding tracks.
• a coding track extends along the key shank 71 and may have e.g. a wavelike course.
• the coding track may be formed e.g. by a line of successive channel portions and/or ridge portions.
• the side portions 73, 74 prevent that the coding part of the key 70 is visible from outside. This impedes an unauthorized duplication of the key 70 e.g. by producing a copy based on pictures taken from the key 70.
• Fig. 5-7 show an embodiment of the blocking bar 30 in more detail.
• the blocking bar 30 comprises ridge portions 31 and spacer portions 32 arranged therebetween.
• the blocking bar 30 In the locked state of the lock the blocking bar 30 is pushed into the longitudinal groove 52 of the housing 50 by means of the elastics means 34, which are arranged between the plug 20 and the blocking bar 30.
• the latter 30 may have at least one recess 33 for receiving one end of a spring as elastics means 34. The other end may be received in a recess formed in the plug 20.
• Fig. 5 and 6 show two such recesses 33, each being formed in a spacer portion 32.
• the lock includes guiding means configured to guide the blocking bar 30 in its movement.
• the blocking bar 30 includes e.g. pegs 35, which are configured to be received in recesses formed in the plug 20.
• Fig. 5 and 6 show two such pegs 35, each being arranged on a spacer portion 32.
• the lateral side 36 of the blocking bar 30 which is
• each ridge portion 31 of the blocking bar 30 is arranged relative to a reference axis, e.g. the middle axis 30a, along which the blocking bar 30 extends, at a specific position.
• the number of ridge portions 31 and the number of possible positions with respect to the reference axis may be chosen differently, and may be two, three or more. Accordingly, the number of validating elements 40 may be one, two, three or more.
• another blocking bar which is configured to define a lock coding and which comprises e.g. ridge portions 31 at predetermined positions.
• the lock may be configured such that the second blocking bar is arranged opposite to the first blocking bar 30.
• the lock is provided with supplemental elements, which correspond to receiving groove 22, slits 23, blind holes 24 including the elastic means, support face 25, validating elements 40 and groove 52 and which may be arranged e.g. mirror
• Fig. 2 shows e.g. a longitudinal groove 52' which is arranged mirror symmetrically to the median plane and which may serve for receiving the second blocking bar in the locked state.
• the same elements as the validating elements 40 may be used, but arranged on the axle 11 in a mirror
• the validating elements are configured to sense the inner side of the other side portion of the key 70, which in the embodiment of Fig. 2 is the left side portion 73.
• the number of possible coding positions can be increased.
• the recess 44 in the validating element 40 is configured such that a ridge portion 31 can be received therein irrespective of the position of the ridge portion 31 relative to the reference axis 30a. This allows the usage of the same form for all validating elements 40.
• the shape of the recess 44 may e.g. not be completely complementary to the shape of the ridge portion 31. In the present
• each ridge portion 31 of the blocking bar 30 has a rectangular cross-section and the recess 44 has an
• the ridge portion 31 visible therein is arranged at the upmost position with respective to the middle axis 30a of the blocking bar 30.
• the upper part of the ridge portion 31 is slightly spaced away from the wall 44b, whereas the lower part of the ridge portion 31 is adjacent to the wall 44a.
• the validating element 40 has to be rotated a bit in the anticlockwise direction with respect to the position shown in Fig. 3. If the ridge portion 31 is arranged at the middle position with respect to the
• the ridge portion 31 is arranged at the lowermost position with respect to the reference axis 30a, the upper part of the ridge portion 31 is adjacent to the wall 44b, whereas the lower part of the ridge portion 31 is arranged slightly spaced away from the wall 44a
• the first arm 41 of a validating element 40 protrudes into a coding cavity 73a or 74b and follows the coding track of the key 70, whereby it is rotated accordingly around the axle 11.
• a validating element 40 and with it the recess 44 have a specific angular position. If the key 50 does not have the correct coding, then the lock remains in the locked state since at least one recess 44 of the validating elements 40 has not the correct
• the receiving groove 22 in the plug 20 is configured to receive the spacer portions 32 of the blocking bar 30.
• the recesses 44 correctly positioned form together with said receiving groove 22 a receiving space which is substantially complementary to the form defined by the portions 31, 32 of the blocking bar 30.
• the lock is locked again by rotating the key 70 and with it the components 10, 20, 30, 40 into the other direction, so that the blocking bar 30 can slide back into the groove 52.
• Withdrawal of the key 70 causes the validating elements 40 by means of the elastic means in the blind holes 24 to be returned back to the initial position, in which at least one of the recesses 44 is not in the correct positions anymore.
• the embodiment described so far has the advantage that the lock may be configured such that the lock coding is defined uniquely by one or more blocking bars.
• the lock coding is defined uniquely by one or more blocking bars.
• a lock manufacturer can define the coding of the lock by simply inserting the blocking bar(s) with a specific coding into the housing.
• Fig. 8 shows part of a lock of another embodiment, in which corresponding elements have the same reference numbers as those of the embodiment shown in Fig. 1 to 7.
• the blocking bar 30' is supplemented at the rearward end with an extension comprising additional blocking means 37 to impede an intended destruction of the lock by
• a blocking element 37 has e.g. the shape of a block and is arranged on the lateral side 36 of the blocking bar 30' and thus, in the assembled state, is directed towards the housing 50' (see Fig . 11 and 12 ) .
• the blocking element 37 includes a forward side 37a and a rearward side 37b both being arranged transversally to the longitudinal direction, in which the groove 52 extend, as well as a top side 37c connecting the sides 37a, 37b and being arranged transversally thereto.
• the sides 37a, 37b are plane, whereas the top side 37c may have a curvature, e.g. a circular cylindrical curvature.
• the extension of the blocking bar 30' has an end portion 38 adjacent to the blocking element 37.
• the side of the end portion 38 which is directed towards the housing 50' has the same shape as the lateral side 36 of the blocking bar 30'.
• the end portion 38 has a tapered shape. The end portion 38 can also be omitted, so that the blocking element 37 defines the end of the blocking bar 30'
• the blocking element 37 and the end portion 38 are arranged on a spacer portion 32' which has a flat underside and which is arranged adjacent to a ridge portion 31.
• a recess 27 corresponding to the spacer portion 32' is provided in the plug 20' so that in the unlocked state of the lock the blocking bar 30' can be received in the receiving space of the plug 20'.
• the spacer portion 32' is provided with a recess 33 or a peg 35, whereas the right recess 33 or the right peg 35 shown in Fig. 9 may be
• Fig. 11 and 12 show the housing 50', which comprises the opening 51 for receiving the plug 20' and the longitudinal groove 52 configured to cooperate with the lateral side 36 of the blocking bar 30'.
• the housing 50' further comprises a recess with a forward face 57a and a rearward face 57b, which are arranged tranversally to the longitudinal
• the forward side 37a and the rearward side 37b of the blocking element 37 are adjacent to the forward face 57a and the rearward face 57b, respectively (see Fig. 13 and 14) .
• the forward face 57a and the rearward face 57b are plane faces. Here, they are part of a groove 57 which is formed in the housing 50' transversally to the rotation axis 11a and which is e.g. circumferential.
• the housing 50' further comprises an end groove 58, which is in line with the longitudinal groove 52 and adjacent to the groove 57.
• the blocking element 37 is visible as a contour of its cross section. Sides 37a and 37b of the blocking element 37 create a shear line of the blocking bar 30' and the sides 57a and 57b of the circumferential groove 57 of the housing 50', see Fig. 14.
• the blocking bar 30' is shiftable towards the receiving space of the plug 20' as indicated by the arrow A in Fig. 15.
• the blocking element 37 is moved out of the groove 57 and is received together with the blocking bar 30' in the plug 20', so that the latter can be rotated with respect to the housing 50'.
• Fig. 16 shows part of a lock of a further embodiment, in which corresponding elements have the same reference numbers as those of the embodiments described above.
• a coding member 80 which has an arcuate shape and which is accommodated in the circumferential groove 57 of the housing 50' (see Fig. 11) .
• the coding member 80 has a protrusion 80a, which extends into the keyway 21 in order to read a key coding 75 provided on the outer side of the key shank 71' (see Fig. 19) .
• One end 80b of the coding member 80 forms a stopper, which, in the locked state of the lock, impedes that the blocking bar 30'' can be moved into the receiving space of the plug 20', even when the validating elements 40 have the correct position.
• the coding member 80 has further a recess 80c, which may have e.g. a V-shape and which serves to cooperate with holding means 81, 82 to hold the coding member 80 in the locked position (see Fig. 20) .
• the blocking bar 30'' is provided with a spacer portion 32'' having a stepped design such that a nose 39 is given, which is configured to cooperate with the stopper 80b of the coding member 80.
• the spacer portion 32'' is provided with a blocking element 37' which has sides 37a, 37b, 37c like the blocking element 37 of the embodiment of Fig. 10.
• a step is formed, so that part of the blocking element 37' forms the nose 39.
• Fig. 19 shows a part of the key shank 71' .
• a coding path which is formed as a groove 75. The latter extends from a first end 75a to a second end 75b.
• a reference axis 71a of the key shank 71' may be defined as the middle axis, which is the symmetrical axis of the profile of the key shank 71'.
• the ends 75a, 75b have a specific position with respect to the middle axis 71a.
• Fig. 20 shows the lock in its locked state.
• Holding means for holding the coding member 80 in the locked position include a pin 81 and a spring 82 accommodated in a blind hole 26, which is formed in the plug 20'.
• the pin 81 has a tapered top which engages in the recess 80c of the coding member 80.
• the stopper 80b engages under the
• a key 70' having the correct coding path 75 can be inserted into the keyway 21, such that the protrusion 80a engages with the coding path 75, whereby the coding member 80 is rotated along the groove 57 formed in the housing 50' to disengage the stopper 80b from the nose 39.
• Fig. 21 shows the lock in its unlocked state.
• the coding member 80 has been rotated in a direction, which is in the present example the clockwise direction.
• the recess 80c has been moved along the pin 81, so that the underside of the stopper 80b contacts the pin 81 and the spring 82 has been compressed in the blind hole 26.
• the stopper 80b is
• the coding member 80 serves as a blocking element, which, in the locked state, cooperates with the blocking bar 30'' to secure it in the longitudinal groove 52. In the locked state, the coding member 80 impedes that the blocking bar 30'' can be moved transversally to the longitudinal axis of the groove 52.
• the blocking bar 30'' includes also a blocking element 37' like the embodiment in Fig. 9.
• the blocking element 37' serves as an additional blocking mean for securing the blocking bar 30'' in the longitudinal groove 52.
• the blocking element 37' impedes that the blocking bar
• the coding member 80 is provided without such a countermeasure against plug extraction.
• the blocking element 37' shown in Fig. 17 may be provided with the nose 39, but the sides 37a, 37b, 37c may be formed such that they have the same tapered shape as the lateral side 36 of the coding bar 30' ' .
• the blocking bar 30' of Fig. 9 and the blocking bar 30'' of Fig. 18 may not be necessarily configured such that they form at least part of the lock coding.
• the lock may have tumbler pins.
• the key may be configured e.g. as a flat key having a coding provided on its outer face.
• the blocking bar may be provided with a blocking element 37' and/or the nose 39, but otherwise may be configured such that the ridge portions 31 are left away and the spacer portions 32, 32', 32'' are arranged without any space therebetween.
• a member integrally formed is fabricated, which constitutes the blocking bar 30, the blocking bar 30' together with the extension 37 (and 38 if provided) or the blocking bar 30'' together with extension 37' (and 38 if provided) .
• an additive manufacturing process may be used for manufacturing said integrally formed member. It is e.g. possible to fabricate in the same run of production multiple blocking bars 30, 30', 30'' each having another coding.
• SLM selective laser melting
• laser sintering laser melting
• electron beam melting fused deposition modeling
• material jetting material jetting
• photopolymer jetting binder jetting
• stereolithography stereolithography
• a 3D model of the blocking bar is created e.g. with CAD.
• the 3D model is converted into a series of layers and a control file is produced which is configured to control the machine for manufacturing the blocking bar in an additive manner.
• the extension 37, 37', 38 is required, it is modeled and created together with the blocking bar.

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• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Lock And Its Accessories (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Cites Families (7)

• 2020
  • 2020-05-05 WO PCT/EP2020/062446 patent/WO2020229230A1/en unknown
  • 2020-05-05 EP EP20723406.3A patent/EP3966411A1/de active Pending

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