CA1165131A - Cylinder lock - Google Patents
Cylinder lockInfo
- Publication number
- CA1165131A CA1165131A CA000379051A CA379051A CA1165131A CA 1165131 A CA1165131 A CA 1165131A CA 000379051 A CA000379051 A CA 000379051A CA 379051 A CA379051 A CA 379051A CA 1165131 A CA1165131 A CA 1165131A
- Authority
- CA
- Canada
- Prior art keywords
- key
- cylinder
- arcuate
- strip
- lines
- 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
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
- E05B19/0029—Key profiles characterized by varying cross-sections of different keys within a lock system
Landscapes
- Lock And Its Accessories (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Pens And Brushes (AREA)
- Fluid-Damping Devices (AREA)
- Eye Examination Apparatus (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A cylinder lock has a housing with a rotatably insert-able cylinder haying a key passage for an insertable flat key whose front part has locking notches associated with cylinder pins arranged in openings of the cylinder for retaining the cylinder pins. The flat key is provided at both its lateral sides with longitudinal grooves for receiving longitudinal ribs provided on the lateral sides, of the key passage for the lateral profile variation. The longitudinal grooves on both lateral faces of the flat key lie with their bottom faces on lines which extend parallel to and at a distance from one another. The parallel lines extend-ing at a distance from one another are arcuate at least in one partial region, and the convexly protruding central part of one arcuate line extend at least close to a straight line connecting the end points of the second arcuate line.
A cylinder lock has a housing with a rotatably insert-able cylinder haying a key passage for an insertable flat key whose front part has locking notches associated with cylinder pins arranged in openings of the cylinder for retaining the cylinder pins. The flat key is provided at both its lateral sides with longitudinal grooves for receiving longitudinal ribs provided on the lateral sides, of the key passage for the lateral profile variation. The longitudinal grooves on both lateral faces of the flat key lie with their bottom faces on lines which extend parallel to and at a distance from one another. The parallel lines extend-ing at a distance from one another are arcuate at least in one partial region, and the convexly protruding central part of one arcuate line extend at least close to a straight line connecting the end points of the second arcuate line.
Description
1 The in~ention relates to a cylinder lock co~posed of a housing and a cylinder rotatably supported therein and having a key passage for the insertable flat key which has a front part with locking notches associated with cylindrical pins arranged in openings of the cylinder for retaining the pins, and the flat key has at its both lateral faces longit~dinal grooYes for receiv-ing longitudinal ribs provided on the lateral faces of the key passage for lateral profile ~ariation, wherein the longitudinal grooves at both lat~ral faces of the flat key lie on parallel lQ lines e-xtending at a distance from one another. In such a con-struction of the flat key the corresponding longitudinal ribs on both lateral faces of the aboYe mentioned key passage also lie with their free ends on parallel lines extending at a distance from one another and formed by straight lines. A free space is thereby formed in the key passage between the longitudinal ribs, in which a picking pistol can be inserted, whereby the cylinder lock can be opened without the proper key.
~ cylinder lock was also proposed in which the longi-tudinal ribs on both lateral faces of the key passage protrude so far that they extend close to the longitudinal centerline of the key passa~e or cross the longitudinal centerline. Thereby a free space in the key passage is avoided so that`a picking pistol cannot be inserted. The longitudinal grooves provided in the flat key for receiving the longitudinal ri~s of the key passage engage however so deep into the flat key that its cross section is considerably weakened or the variation is limited.
The invention has the object to provide a cylinder lock of the above mentioned type, in which these disadYantages are eliminated, wherein the flat key has a sufficientiy great cross 3~ section and thereby a sufficient strength and an actuation of the cylinder lock with a picking pistol is prevented.
~ cylinder lock was also proposed in which the longi-tudinal ribs on both lateral faces of the key passage protrude so far that they extend close to the longitudinal centerline of the key passa~e or cross the longitudinal centerline. Thereby a free space in the key passage is avoided so that`a picking pistol cannot be inserted. The longitudinal grooves provided in the flat key for receiving the longitudinal ri~s of the key passage engage however so deep into the flat key that its cross section is considerably weakened or the variation is limited.
The invention has the object to provide a cylinder lock of the above mentioned type, in which these disadYantages are eliminated, wherein the flat key has a sufficientiy great cross 3~ section and thereby a sufficient strength and an actuation of the cylinder lock with a picking pistol is prevented.
-2-~' ~3~S~31 1 This object is solve~ in accordance with the present invention in that the both parallel lines extending at a distance from one another r against which the longitudinal grooves of the flat key lie with their bottom faces, extend at least in a partial region arcuately and the convexly protruding central part of one arcuate line extends at least close to a s.traight line which connects the end poi.nts of the second arcuate line. Thereby it is attained in a simple manner that the longitudinal grooves of the flat key do not e~tend too deep into the key cross section, inasmuch.as the lines. ~hich.extend parallel to one another and against which the longitudinal grooves of the flat key lie with their bottom faces, are arranged at a distance from one another.
Thereby the key obtains a sufficient strength. The proper key passage has because of this a free space which however is curved as a result of the arcuate .running of the lines, so that the actuation of the cylinder lock with a picking pistol is impossible inasmuch as for this actuation a rectilinearly extending free space is necess.ary.
The lines against which the longitudinal grooves of the flat key kie with.their bottom faces can at least in a partial region run ~n circularly arcuate mannex. ~ecause of this it is attained in a simple ~anner that the longitudinal grooves of the flat key extend with their bottom faces along a line having the shape of a circular arc.
The partial region in which the lines run in an arcuate manner can embrace the variation region of the lockin~ notches of the flat key. Thereby the arcuate running of the lines is provided in a simple manner exactly in the region which embraces the varia-tion region of the locking notches of the flat key, so that directly 3Q in this region the picking pi.stol cannot operate to actuate the cylindrical pins.
~3--~5~3~
1 The partial region in which the lines run in an arcuate manner can be arranged with its arc heigKt substantially symmetrical to the longitudinal centerline of the cylinder pins.
secause of the arcuate shape of the lines against which the lon~i~
tudinal grooYes of the flat key with their bottom faces lie, engages the part of the key section t~e ends of the cylinder pins facing towards the front part of the key, substantially in the region of their longitudinal centerline, so t~at the arrangement of the cyIinder pins are not affected.
lQ The partial region in which the lines extend in an arcuate manner, can extend from the end forming the front part to the part of the key section forming the key back with its guide.
With the exception of the part forming the key back with its guide, the lines against which the longitudinal grooves of the fla-t key lie with their bottom faces are thereby formed arcuate.
The bottom faces of the longitudinal grooves of the flat key which lie against the lines can extend in correspondence with the arcuate lines also in an arcuate manner. Thereby the bottom ~aces o~ the longitudinal grooves of the flat key are formed in a simple manner arcuate.
The lateral faces of the flat key can extend parallel to both lines which are spaced from one another and are curved in an arcuate manner. Thereby the entire cross section of the Elat key can be curved arcuately in a simple manner. The longi-tudinal grooves can in this case be provided in the key section with an identical depth.
The ~ateral faces of the Elat key can also extend rectilinearly. Thereby the key is formed flat in a simple manner even though the lines against which the longitudinal grooves of 3Q the flat key lie with their bottom faces extend in an arcuate manner.
~ 3 ~$~3~
1 The part of the key section forming the key back with its guide can be bent and laterally offset to extend parallel to the iongitudinal centerline of the cylinder pin.
Thereby the thickness of the curved flat key is reduced in a simple manner. Moreover, the end of the key passage section which opens at the outer surface of the cylinder extends substan-tially perpendlcular to the outer surface.
The key passage provided in the cylinder may have a cross section corresponding to the cross section of the flat key.
Thereby the key passage has a cross section which allows the inser-tion of the flat key.
The invention is shown in two embodiments in the drawings, wherein:
FIG. 1 is located on the first sheet of the drawing and shows the inventive cylinder lock in a longitudinal section, FIG. 2 is located on the second sheet of the drawing and shows a section along the line 2-2 in FIG. 1, through the rotary cylinder, on a greater scale, FIG. 3 is located on the first sheet of the drawing and shows a section corresponding to the section of FIG. 2 through the flat ke~v, which is inserted in the key passage of the cylinder, FIG. 4 is located on the third sheet of the drawing and shows a second em~odiment in a section co~esponding ~o ~he section of FIG. 2, and FIG. 5 is l~cated ~n the third sheet ~f the drawing and shows a section of the key, corresponding to the section of FIG. 4.
The cylinder lock shown in the drawing is composed of a housing 10 and a cylinder 11 rotatably supported therein and having a key passage 12. The cylinder 11 is actuated by a key 13 insertable into the key passage 12, inasmuch as the front part is arranged to cooperate with cylinder pins inserted into openings 14 of the cylinder 11, whereby the cylinder pins coincide with the outer face 16 of the cylinder 11. This position is shown in FIG. 1.
~65~3~
1 Housin~ pins l9 inserted into openings 17 of the housing 10 and arranged under the actlon of helical pres.sure springs 18 extend in the event of the removed key 13 with their front ends into the openlngs. 14 of the cylinder ll so that the cylinder ll is locked against rotation.
For actuatlng the cylinder lock, the key 13 must have a shape corresponding to t~e shape. of the key passage 12 to allow the insertion of the key 13 into the key p.as.sa~e 12. Moreover~
a front part 20 of the key 13 must haYe lockin~ notches 21 corres-ponding to the length of the cylindex pins 15, so that the cylinderpins 14 coincide with the outer face 16 of the cylinder ll and thereby a rotation of the cylinder ll is poss.ible.
FIG. 3 shows a cross section of a part of the key 13, insertable into the key passage 12 o~ the cylinder 11. The key cros.s section is so cut throu~h that it has a lateral profile variation formed by longitudinal ribs 22-27~ Thereby, a simul-taneous lateral profile variation because of longitudinal grooves 28-34 forming gaps between the ribs is provided. The general main key has all longitudinal grooves 28-34, but does not have ~Q longitudinal ribs 22-27, As can be seen from FIG. 2, the key passage 12 in the cylinder ll is de~igned correspondingly. The key passage 12 of t~e cylinder 11 has longitudinal grooves 35-4n corresponding to the longltudinal ribs 22-27 which serye for the lateral profile variati.on. The key passage 12 also has longitudinal ribs 41-4'7 which correspond to the longitudinal groo~es 28~34 of the key 13 also ser~ing for the lateral profile variation.
As can be seen from FIG. 3, the longitudinal ribs 22~27 and the longitudinal grooves 28~34 extend approximately over the entire longitudinal faces of the key 1~ and up to the back 14 which.with its guide groove 49 does not serve for the I ~ 65 ~
1 longltudinal pro~ile variation. The key pas~age 12 is provided with a corres,ponding ~uide rib ~. The key back 48 extends to the outer face 16 o~ the cylinder 11 and coincides with the latter.
~his means that the key passage 12 of the cylinder 11 also extends to the outer face 16 of the cylinder 11.
The longitudinal grooves ~8-34 on both lateral faces of the ~lat Icey lie with their botto~ faces 51 57 on para~lel lines 58 and 59~e~tending at a distance from one another. These lines 58 and 5q are shown in FIG. 3 in dash dot lines. Both p~rallel lines, 58~ 59 extending at a distance from one another, against which the longitudinal grooves 28-34 of the flat key 18 lie with their bottom faces 51-57, extend in an arcuate manner, and particularly as circular arcs. The convexly protruding central part of one arcuate line 58 extends at least close to a not shown straight line which connects the end points of the second arcuate line 59. In the sho~n embodiment the conve~ly protruding centraL
part of the arcuate line 58 crosses the not shown straight line by a considerable piece. The key passage 12 in the cylinder 11 is Eorme~ correspondingly. The longitudinal ribs 41-47 engaying into the longitudinal grooves 28-34 of the key 13 lie with their free end faces 5~-66 on t~o lines 67, 68 which e~tend parallel to one another in an arcuate manner! as shown in dash dot lines in ~IG. 2.
Both lines 67, 68 are arranged at a distance from one another so that the key passage 12 between the longitudinal ribs 41-47~has a free space 69 which howe~er extends in an arcuate manner so that an actuation of the cylinder pin 15 with a picking pistol is not possible. On the other hand, the key 13 obtains a relatively ~reat cross section face because the distance between the lines 58, 59 so that the key can withstand all loads.
A strip 7~ of the key 13 extending between ~oth arcuate lines 58, 59 is with its arc height in the variation region of -~ 1 ~5~
1 the locking notches 21 arran~ed substantially symmetrical to the longitudinal centerline 71 of the cylinder pin 1~. Thereby ihe strip 7~ is always Ln operative connection with the flattened tips of the cylinder pins 15, regardless of the variation region of the locking notches 21, so that despite the arcuate construction of the strip 70 the actuation of the cylinder pins 15 is not affected The ~ariation region of the locking notches 21 is shown in ~'IG. 2 in dotted lines.
I'he bottom faces 5I~5i' o~ the longitudinal grooves 28-34 of the flat key 13~ which lie against the lines 58, 59, extend in correspondence with the arcuate lines 58, 59, also in an arcuate manner. The end faces 60-66 of the longitudinal ribs 41-4~ of the key passage 12 also extend correspondingly in an arcuate manner.
The lateral faces ~2 of the flat key 13 formed by the longitudinal ribs 22-27 also e~tend parallel to the lines 58, 59 which are spaced from one another and curved in an arcuate manner.
Correspondingly, the lateral faces 73 of the key passage 12 formed by the longitudinal grooves ~5-40 are also curved in an arcuate manner and extend parallel to the arcuate lines 67, 68.
The part of the key section fo,rming the`key back 48 with its guides 49, 50 is bent and e,xtends in a laterally offset manner parallel to the Longitudinal centerline 71 of the cylinder pins 51 Thereby the thickness of the key 13, despite the arcuate construc-tion, is held as small as possible.
In the second embo~iment shown in FIGS. 4 and 5, the section of the part of the key 13 which is insertable into the key passage 12 of the cylinder 11 is shown in FIG. 5. The key cross section is cut through so that it has a lateral profile variation by the longitudinal ribs 22~27. A simultaneous lateral profile variation is provided by the longitu~inal grooves 28-34 forming the gaps between the ribs. The general main key has al,l t ~ ~5 ~ 3 ~
1 longitudinal grooves 28~34, but does not have the longitudinal ribs 22-27.
As can be seen from FIG~ 4, the key passage 12 in the cylinder 11 is desi~ned corres~ondingly The key passage 12 o~
the cylinder 11 h.as the longi.tudinal grooyes 35~40 corresponding to the longitudinal ribs 22~27 ~hicb serve for lateral profile variation~ The key pas~sage 12 also has the longitudinal ribs 41-47 which.correspond to the longituain~l grooves 28-.34 of the key 13, also serYing for the lateral profile variation.
lQ As. can be seen ~rom FIG. 5, the longitudinal rib~ 22-2 and tbe longitudinal grooyes 28-34 extend approximately over the entire lateral faces of the key 13 and to tbe ~ack 48 with its gulding groove 49 which.does not ser~e for the lateral profile variation~ The key passage 12 is provided with a corresponding guide rib 50. T~e key back 48 extends to the outer surface 16 of the cylinder 11 and coincides with.the sa~e. This means that the key pass.age 12 of the cylinder 11 also extends to thè outer surface 16 of the cylinder 11.
The longitudinal grooves ~8--34 on both lateral faces of the flat key lie with their b.ottom faces 51-57 on parallel lines 58, 59 arranged at a distance from one another. These lines 58 and 59 are shown in FIG. 5 in dash dot li.nes. The parallel lines 58, 59 e.xtending at a distance from one another, against which the longitudinal grooves 28~34 of the flat key 13 lie with their bottom faces 51-57~ extend in an arcuate manner, and particu].arly as circular arcs. The convexly protruding central part of one arcuate line 58 e~tends at least close to a not shown straight line which connects the end points of the second arcuate line 59.
In the show.n e~bodiment, the conYexly protruding central part of the arcuate line 58 cros.ses the not shown straight line by a considerable piece.
1~6'~ 31 1 The key passage 12 in the cylinder 11 is formed corres-pondingly. The longitudinal ribs ~1-47 engaging in the longitudi-nal grooves 28-34 of t~e key 13 lie with their free end faces 60-6~ on lines 67, 6~ which are parallel to one another and arcuate, as shown in FIG. 4 in dash dot lines. Both lines 67, 68 are !
arranged at a distance f~rom one another, so tnat a free space 69 i5 produced in the key passage 12 bet~een the longitudinal ribs 41-47, the free space 60 also extending in an arcuate manner so th~t the cylinde~ pins 15 cannot be actuated by a picking pistol.
On the other hand, the key 13 has a great cross section face because of the distance between the lines 58, 59, so that the key can withstand all loads The strip 70 of the key 13 produced between both arcuately extending lines 58, 59 is with its arc height in the variation region of the locking notches 21 arranged substantially'symmetrical to the longitudinal centerline 71 of the cylinder pins 15. Thereby the strip 70 is always in operative connection with the flattened tips of the cylinder pins 15, regardl~ss of the variation region of the locking notches 21, so that despite the arcuate construction 2~ of the strip 70 the actuation of the cylinder pin 15 is not affected.
The variation region of the locking notches is shown in FIG. 4 in dotted lines.
The bottom faces 51-57 of the longitudinal grooves 28-34 of the'flat key 13 which lie against the lines 58, S9, extend also arcuately in correspondence with the arcuate lines 58, 59. Corres-pondingly~ the end faces 60-66 of the longitudinal ribs 41-47 of the key passage 12 also extend arcuately in a similar manner.
The lateral faces 72 of the key 13/ formed by the longi-tudinal ribs 22-27~ extend in this embodiment rectilinearly and 3Q p~rallel to the movement path of the cylinder pins 15. The lateral faces 73 of the locking passage 12 formed by the longltudinal groo~es 35-40 also extend rectilinearly. Thereby the thickness of the flat key 13 is reduced in a simple manner.
As mentioned abo~e, only exemplary implementations of S~31 1 the inve.ntion are illustrated by the above presented embodiments, and the invention is not limited thereby. Moreover, other emboai-ments and variation~ are possible. Thus, it is possible to curve the lateral faces 72 of the flat key 13 also in an arcuate manner, ~hereas the radius thereof de.yiates fro.m the radi~s of the arcuate lines 58, 59. The lateral profile variation of the flat key 13 can, .instead of the longi,tudinal ribs 22-27 and longitudinal grooves 28-34, also have only longitudinal ri.bs. or only longitudinal grooves.
Thereby the key obtains a sufficient strength. The proper key passage has because of this a free space which however is curved as a result of the arcuate .running of the lines, so that the actuation of the cylinder lock with a picking pistol is impossible inasmuch as for this actuation a rectilinearly extending free space is necess.ary.
The lines against which the longitudinal grooves of the flat key kie with.their bottom faces can at least in a partial region run ~n circularly arcuate mannex. ~ecause of this it is attained in a simple ~anner that the longitudinal grooves of the flat key extend with their bottom faces along a line having the shape of a circular arc.
The partial region in which the lines run in an arcuate manner can embrace the variation region of the lockin~ notches of the flat key. Thereby the arcuate running of the lines is provided in a simple manner exactly in the region which embraces the varia-tion region of the locking notches of the flat key, so that directly 3Q in this region the picking pi.stol cannot operate to actuate the cylindrical pins.
~3--~5~3~
1 The partial region in which the lines run in an arcuate manner can be arranged with its arc heigKt substantially symmetrical to the longitudinal centerline of the cylinder pins.
secause of the arcuate shape of the lines against which the lon~i~
tudinal grooYes of the flat key with their bottom faces lie, engages the part of the key section t~e ends of the cylinder pins facing towards the front part of the key, substantially in the region of their longitudinal centerline, so t~at the arrangement of the cyIinder pins are not affected.
lQ The partial region in which the lines extend in an arcuate manner, can extend from the end forming the front part to the part of the key section forming the key back with its guide.
With the exception of the part forming the key back with its guide, the lines against which the longitudinal grooves of the fla-t key lie with their bottom faces are thereby formed arcuate.
The bottom faces of the longitudinal grooves of the flat key which lie against the lines can extend in correspondence with the arcuate lines also in an arcuate manner. Thereby the bottom ~aces o~ the longitudinal grooves of the flat key are formed in a simple manner arcuate.
The lateral faces of the flat key can extend parallel to both lines which are spaced from one another and are curved in an arcuate manner. Thereby the entire cross section of the Elat key can be curved arcuately in a simple manner. The longi-tudinal grooves can in this case be provided in the key section with an identical depth.
The ~ateral faces of the Elat key can also extend rectilinearly. Thereby the key is formed flat in a simple manner even though the lines against which the longitudinal grooves of 3Q the flat key lie with their bottom faces extend in an arcuate manner.
~ 3 ~$~3~
1 The part of the key section forming the key back with its guide can be bent and laterally offset to extend parallel to the iongitudinal centerline of the cylinder pin.
Thereby the thickness of the curved flat key is reduced in a simple manner. Moreover, the end of the key passage section which opens at the outer surface of the cylinder extends substan-tially perpendlcular to the outer surface.
The key passage provided in the cylinder may have a cross section corresponding to the cross section of the flat key.
Thereby the key passage has a cross section which allows the inser-tion of the flat key.
The invention is shown in two embodiments in the drawings, wherein:
FIG. 1 is located on the first sheet of the drawing and shows the inventive cylinder lock in a longitudinal section, FIG. 2 is located on the second sheet of the drawing and shows a section along the line 2-2 in FIG. 1, through the rotary cylinder, on a greater scale, FIG. 3 is located on the first sheet of the drawing and shows a section corresponding to the section of FIG. 2 through the flat ke~v, which is inserted in the key passage of the cylinder, FIG. 4 is located on the third sheet of the drawing and shows a second em~odiment in a section co~esponding ~o ~he section of FIG. 2, and FIG. 5 is l~cated ~n the third sheet ~f the drawing and shows a section of the key, corresponding to the section of FIG. 4.
The cylinder lock shown in the drawing is composed of a housing 10 and a cylinder 11 rotatably supported therein and having a key passage 12. The cylinder 11 is actuated by a key 13 insertable into the key passage 12, inasmuch as the front part is arranged to cooperate with cylinder pins inserted into openings 14 of the cylinder 11, whereby the cylinder pins coincide with the outer face 16 of the cylinder 11. This position is shown in FIG. 1.
~65~3~
1 Housin~ pins l9 inserted into openings 17 of the housing 10 and arranged under the actlon of helical pres.sure springs 18 extend in the event of the removed key 13 with their front ends into the openlngs. 14 of the cylinder ll so that the cylinder ll is locked against rotation.
For actuatlng the cylinder lock, the key 13 must have a shape corresponding to t~e shape. of the key passage 12 to allow the insertion of the key 13 into the key p.as.sa~e 12. Moreover~
a front part 20 of the key 13 must haYe lockin~ notches 21 corres-ponding to the length of the cylindex pins 15, so that the cylinderpins 14 coincide with the outer face 16 of the cylinder ll and thereby a rotation of the cylinder ll is poss.ible.
FIG. 3 shows a cross section of a part of the key 13, insertable into the key passage 12 o~ the cylinder 11. The key cros.s section is so cut throu~h that it has a lateral profile variation formed by longitudinal ribs 22-27~ Thereby, a simul-taneous lateral profile variation because of longitudinal grooves 28-34 forming gaps between the ribs is provided. The general main key has all longitudinal grooves 28-34, but does not have ~Q longitudinal ribs 22-27, As can be seen from FIG. 2, the key passage 12 in the cylinder ll is de~igned correspondingly. The key passage 12 of t~e cylinder 11 has longitudinal grooves 35-4n corresponding to the longltudinal ribs 22-27 which serye for the lateral profile variati.on. The key passage 12 also has longitudinal ribs 41-4'7 which correspond to the longitudinal groo~es 28~34 of the key 13 also ser~ing for the lateral profile variation.
As can be seen from FIG. 3, the longitudinal ribs 22~27 and the longitudinal grooves 28~34 extend approximately over the entire longitudinal faces of the key 1~ and up to the back 14 which.with its guide groove 49 does not serve for the I ~ 65 ~
1 longltudinal pro~ile variation. The key pas~age 12 is provided with a corres,ponding ~uide rib ~. The key back 48 extends to the outer face 16 o~ the cylinder 11 and coincides with the latter.
~his means that the key passage 12 of the cylinder 11 also extends to the outer face 16 of the cylinder 11.
The longitudinal grooves ~8-34 on both lateral faces of the ~lat Icey lie with their botto~ faces 51 57 on para~lel lines 58 and 59~e~tending at a distance from one another. These lines 58 and 5q are shown in FIG. 3 in dash dot lines. Both p~rallel lines, 58~ 59 extending at a distance from one another, against which the longitudinal grooves 28-34 of the flat key 18 lie with their bottom faces 51-57, extend in an arcuate manner, and particularly as circular arcs. The convexly protruding central part of one arcuate line 58 extends at least close to a not shown straight line which connects the end points of the second arcuate line 59. In the sho~n embodiment the conve~ly protruding centraL
part of the arcuate line 58 crosses the not shown straight line by a considerable piece. The key passage 12 in the cylinder 11 is Eorme~ correspondingly. The longitudinal ribs 41-47 engaying into the longitudinal grooves 28-34 of the key 13 lie with their free end faces 5~-66 on t~o lines 67, 68 which e~tend parallel to one another in an arcuate manner! as shown in dash dot lines in ~IG. 2.
Both lines 67, 68 are arranged at a distance from one another so that the key passage 12 between the longitudinal ribs 41-47~has a free space 69 which howe~er extends in an arcuate manner so that an actuation of the cylinder pin 15 with a picking pistol is not possible. On the other hand, the key 13 obtains a relatively ~reat cross section face because the distance between the lines 58, 59 so that the key can withstand all loads.
A strip 7~ of the key 13 extending between ~oth arcuate lines 58, 59 is with its arc height in the variation region of -~ 1 ~5~
1 the locking notches 21 arran~ed substantially symmetrical to the longitudinal centerline 71 of the cylinder pin 1~. Thereby ihe strip 7~ is always Ln operative connection with the flattened tips of the cylinder pins 15, regardless of the variation region of the locking notches 21, so that despite the arcuate construction of the strip 70 the actuation of the cylinder pins 15 is not affected The ~ariation region of the locking notches 21 is shown in ~'IG. 2 in dotted lines.
I'he bottom faces 5I~5i' o~ the longitudinal grooves 28-34 of the flat key 13~ which lie against the lines 58, 59, extend in correspondence with the arcuate lines 58, 59, also in an arcuate manner. The end faces 60-66 of the longitudinal ribs 41-4~ of the key passage 12 also extend correspondingly in an arcuate manner.
The lateral faces ~2 of the flat key 13 formed by the longitudinal ribs 22-27 also e~tend parallel to the lines 58, 59 which are spaced from one another and curved in an arcuate manner.
Correspondingly, the lateral faces 73 of the key passage 12 formed by the longitudinal grooves ~5-40 are also curved in an arcuate manner and extend parallel to the arcuate lines 67, 68.
The part of the key section fo,rming the`key back 48 with its guides 49, 50 is bent and e,xtends in a laterally offset manner parallel to the Longitudinal centerline 71 of the cylinder pins 51 Thereby the thickness of the key 13, despite the arcuate construc-tion, is held as small as possible.
In the second embo~iment shown in FIGS. 4 and 5, the section of the part of the key 13 which is insertable into the key passage 12 of the cylinder 11 is shown in FIG. 5. The key cross section is cut through so that it has a lateral profile variation by the longitudinal ribs 22~27. A simultaneous lateral profile variation is provided by the longitu~inal grooves 28-34 forming the gaps between the ribs. The general main key has al,l t ~ ~5 ~ 3 ~
1 longitudinal grooves 28~34, but does not have the longitudinal ribs 22-27.
As can be seen from FIG~ 4, the key passage 12 in the cylinder 11 is desi~ned corres~ondingly The key passage 12 o~
the cylinder 11 h.as the longi.tudinal grooyes 35~40 corresponding to the longitudinal ribs 22~27 ~hicb serve for lateral profile variation~ The key pas~sage 12 also has the longitudinal ribs 41-47 which.correspond to the longituain~l grooves 28-.34 of the key 13, also serYing for the lateral profile variation.
lQ As. can be seen ~rom FIG. 5, the longitudinal rib~ 22-2 and tbe longitudinal grooyes 28-34 extend approximately over the entire lateral faces of the key 13 and to tbe ~ack 48 with its gulding groove 49 which.does not ser~e for the lateral profile variation~ The key passage 12 is provided with a corresponding guide rib 50. T~e key back 48 extends to the outer surface 16 of the cylinder 11 and coincides with.the sa~e. This means that the key pass.age 12 of the cylinder 11 also extends to thè outer surface 16 of the cylinder 11.
The longitudinal grooves ~8--34 on both lateral faces of the flat key lie with their b.ottom faces 51-57 on parallel lines 58, 59 arranged at a distance from one another. These lines 58 and 59 are shown in FIG. 5 in dash dot li.nes. The parallel lines 58, 59 e.xtending at a distance from one another, against which the longitudinal grooves 28~34 of the flat key 13 lie with their bottom faces 51-57~ extend in an arcuate manner, and particu].arly as circular arcs. The convexly protruding central part of one arcuate line 58 e~tends at least close to a not shown straight line which connects the end points of the second arcuate line 59.
In the show.n e~bodiment, the conYexly protruding central part of the arcuate line 58 cros.ses the not shown straight line by a considerable piece.
1~6'~ 31 1 The key passage 12 in the cylinder 11 is formed corres-pondingly. The longitudinal ribs ~1-47 engaging in the longitudi-nal grooves 28-34 of t~e key 13 lie with their free end faces 60-6~ on lines 67, 6~ which are parallel to one another and arcuate, as shown in FIG. 4 in dash dot lines. Both lines 67, 68 are !
arranged at a distance f~rom one another, so tnat a free space 69 i5 produced in the key passage 12 bet~een the longitudinal ribs 41-47, the free space 60 also extending in an arcuate manner so th~t the cylinde~ pins 15 cannot be actuated by a picking pistol.
On the other hand, the key 13 has a great cross section face because of the distance between the lines 58, 59, so that the key can withstand all loads The strip 70 of the key 13 produced between both arcuately extending lines 58, 59 is with its arc height in the variation region of the locking notches 21 arranged substantially'symmetrical to the longitudinal centerline 71 of the cylinder pins 15. Thereby the strip 70 is always in operative connection with the flattened tips of the cylinder pins 15, regardl~ss of the variation region of the locking notches 21, so that despite the arcuate construction 2~ of the strip 70 the actuation of the cylinder pin 15 is not affected.
The variation region of the locking notches is shown in FIG. 4 in dotted lines.
The bottom faces 51-57 of the longitudinal grooves 28-34 of the'flat key 13 which lie against the lines 58, S9, extend also arcuately in correspondence with the arcuate lines 58, 59. Corres-pondingly~ the end faces 60-66 of the longitudinal ribs 41-47 of the key passage 12 also extend arcuately in a similar manner.
The lateral faces 72 of the key 13/ formed by the longi-tudinal ribs 22-27~ extend in this embodiment rectilinearly and 3Q p~rallel to the movement path of the cylinder pins 15. The lateral faces 73 of the locking passage 12 formed by the longltudinal groo~es 35-40 also extend rectilinearly. Thereby the thickness of the flat key 13 is reduced in a simple manner.
As mentioned abo~e, only exemplary implementations of S~31 1 the inve.ntion are illustrated by the above presented embodiments, and the invention is not limited thereby. Moreover, other emboai-ments and variation~ are possible. Thus, it is possible to curve the lateral faces 72 of the flat key 13 also in an arcuate manner, ~hereas the radius thereof de.yiates fro.m the radi~s of the arcuate lines 58, 59. The lateral profile variation of the flat key 13 can, .instead of the longi,tudinal ribs 22-27 and longitudinal grooves 28-34, also have only longitudinal ri.bs. or only longitudinal grooves.
Claims (7)
1. A cylinder lock comprising a housing; a cylinder rotatably arranged in said housing and having a key passage with two lateral walls having respectively first and second pluralities of longitudinal ribs for lateral profile varying, the longitudinal ribs of said first and second pluralities of ribs having end faces lying respectively on two limiting lines which define therebetween a uniformly extending strip-like gap in said key passage, said cylinder also having a plurality of openings; a plurality of pins arranged in said openings of said cylinder and having axes which define a longitudinal center plane; and a substantially flat key insertable into said key passage of said cylinder and having a front part provided with a plurality of notches cooperating with said pins in said cylinder, said key having first and second lateral faces provided respec-tively with first and second pluralities of longitudinal grooves for receiving said longitudinal ribs of said key passage of said cylinder; the longitudinal grooves of said first and second pluralities of grooves having bottom faces lying respectively on two further limiting lines which define therebetween a uniformly extending strip in said flat key, said strip-like gap of said key passage and said strip of said flat key being arcuate at least in the height region of said notches of said flat key, and said longitudinal center plane defined by said axes of said pins cutting through the arc of said strip-shaped gap and said strip as a secant, so that the arc extends substantially identically fat at both sides of said longitudinal center plane.
2. A cylinder key as defined in claim 1, wherein said arcuate strip-shaped gap of said cylinder and said strip of said key each is substantially symmetrical to said longitudinal center plane of said pins.
3. A cylinder lock as defined in claim 1, wherein said key has a cross section with a part forming a key rear and provided with guides, said arcuate strip-shaped gap of said cylinder and said strip of said key each extending to said part forming said key rear with said guides.
4. A cylinder lock as defined in claim 1, wherein said limiting lines of said key are arcuate, said bottom faces of said key lying on said limiting lines extending in an arcuate manner in correspondence with said arcuate lines.
5. A cylinder lock as defined in claim 1, wherein said limiting lines of said key are arcuate, said key having lateral faces extending parallel to said arcuate limiting lines.
6. A cylinder lock as defined in claim 1, wherein said key has a cross section with a part forming key rear provided with guide, said part forming said key rear with said guide being bent and extending laterally offset parallel to said longitudinal center plane of said pins.
7. A cylinder lock as defined in claim 1, wherein the arc of said strip-like gap of said key passage and of the strip of said flat key is circular.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3021128.0 | 1980-06-04 | ||
| DE3021128A DE3021128C2 (en) | 1980-06-04 | 1980-06-04 | Cylinder lock for locking systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1165131A true CA1165131A (en) | 1984-04-10 |
Family
ID=6103930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000379051A Expired CA1165131A (en) | 1980-06-04 | 1981-06-04 | Cylinder lock |
Country Status (13)
| Country | Link |
|---|---|
| AT (1) | AT368589B (en) |
| BE (1) | BE889064A (en) |
| CA (1) | CA1165131A (en) |
| CH (1) | CH651884A5 (en) |
| DE (1) | DE3021128C2 (en) |
| FI (1) | FI76175C (en) |
| FR (1) | FR2484000B1 (en) |
| IT (1) | IT1136641B (en) |
| LU (1) | LU83405A1 (en) |
| NL (1) | NL181748C (en) |
| NO (1) | NO156180C (en) |
| SE (1) | SE436589B (en) |
| ZA (1) | ZA813745B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3614222A1 (en) * | 1985-11-27 | 1987-06-04 | Dom Sicherheitstechnik | KEY FOR LOCKING CYLINDER |
| DE4123378C3 (en) * | 1991-07-15 | 1997-09-11 | Bab Ikon Gmbh | Cylinder lock for locking systems |
| DE19548426C2 (en) * | 1995-12-22 | 2003-12-11 | Schliesanlagen Gmbh Pfaffenhai | Cylinder lock for locking systems |
| FR2762346B1 (en) * | 1997-04-18 | 1999-07-09 | Andre Merle | MULTI-COMBINATION LOCK CYLINDER |
| US6615628B2 (en) * | 2001-07-20 | 2003-09-09 | Chi-Wen Lou | Picklock-proof key slot for a lock device and a key thereof |
| CN1844626B (en) * | 2005-06-15 | 2012-09-05 | 余义伦 | Lock and key capable of preventing destructive and technical opening |
| CN1844625B (en) * | 2005-06-15 | 2014-08-06 | 余义伦 | Lock capable of preventing destructive and technical opening |
| CN101806175B (en) * | 2010-04-11 | 2013-03-20 | 余义伦 | Lock capable of ensuring portability of key |
| DE102020124366A1 (en) | 2020-09-18 | 2022-03-24 | Assa Abloy Sicherheitstechnik Gmbh | Lock and key system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE315007C (en) * | ||||
| US1280633A (en) * | 1914-01-26 | 1918-10-08 | King Lock Company | Key-controlled lock. |
| DE408572C (en) * | 1923-09-04 | 1925-01-20 | Schmidt & Meldau Baubeschlagfa | Cylinder lock |
| US2620649A (en) * | 1948-02-18 | 1952-12-09 | Bernardo Vicente Santo Domingo | Pin tumbler lock |
| FR1443313A (en) * | 1965-05-11 | 1966-06-24 | Guerville Riquier Ets | Unpickable cylinder lock |
| DE1553522A1 (en) * | 1965-09-15 | 1970-04-30 | Eaton Yale & Towne Gmbh | Key system consisting of several group keys |
| DE1553482C3 (en) * | 1966-04-21 | 1975-07-24 | C. Ed. Schulte Gmbh, 5620 Velbert | Side profile variation for flat keys of cylinder locks in master key systems |
| DE6921554U (en) * | 1968-07-26 | 1969-09-04 | Viro Innocenti Spa | LOCKING CYLINDER WITH FLAT KEY |
| FR2268140B1 (en) * | 1974-04-18 | 1978-05-12 | Neiman Sa | |
| DE2551523C3 (en) * | 1975-11-17 | 1982-03-18 | Scovill Sicherheitseinrichtungen Gmbh, 5620 Velbert | Group flat key for rotary cylinder locks in locking systems |
-
1980
- 1980-06-04 DE DE3021128A patent/DE3021128C2/en not_active Expired
-
1981
- 1981-05-25 AT AT0233881A patent/AT368589B/en not_active IP Right Cessation
- 1981-05-26 NL NLAANVRAGE8102580,A patent/NL181748C/en not_active IP Right Cessation
- 1981-05-27 FR FR8110595A patent/FR2484000B1/en not_active Expired
- 1981-06-01 FI FI811690A patent/FI76175C/en not_active IP Right Cessation
- 1981-06-02 LU LU83405A patent/LU83405A1/en unknown
- 1981-06-02 SE SE8103455A patent/SE436589B/en not_active IP Right Cessation
- 1981-06-02 BE BE6/47466A patent/BE889064A/en not_active IP Right Cessation
- 1981-06-03 IT IT22111/81A patent/IT1136641B/en active
- 1981-06-03 NO NO811885A patent/NO156180C/en unknown
- 1981-06-03 CH CH3632/81A patent/CH651884A5/en not_active IP Right Cessation
- 1981-06-04 ZA ZA00813745A patent/ZA813745B/en unknown
- 1981-06-04 CA CA000379051A patent/CA1165131A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL181748B (en) | 1987-05-18 |
| DE3021128A1 (en) | 1981-12-10 |
| NL8102580A (en) | 1982-01-04 |
| FI811690L (en) | 1981-12-05 |
| SE8103455L (en) | 1981-12-05 |
| IT8122111A0 (en) | 1981-06-03 |
| NL181748C (en) | 1992-03-16 |
| DE3021128C2 (en) | 1987-02-12 |
| FI76175B (en) | 1988-05-31 |
| ZA813745B (en) | 1982-06-30 |
| IT1136641B (en) | 1986-09-03 |
| NO811885L (en) | 1981-12-07 |
| NO156180C (en) | 1987-08-05 |
| BE889064A (en) | 1981-12-02 |
| ATA233881A (en) | 1982-02-15 |
| LU83405A1 (en) | 1981-09-11 |
| SE436589B (en) | 1985-01-07 |
| NO156180B (en) | 1987-04-27 |
| AT368589B (en) | 1982-10-25 |
| FI76175C (en) | 1988-09-09 |
| CH651884A5 (en) | 1985-10-15 |
| FR2484000A1 (en) | 1981-12-11 |
| FR2484000B1 (en) | 1986-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1165131A (en) | Cylinder lock | |
| EP0231599B1 (en) | Key for a lock cylinder | |
| EP0237172B2 (en) | Locking device consisting of a locking cylinder and associated flat key | |
| US4377082A (en) | Cylinder-lock with flat key | |
| US4978310A (en) | Electrical jack connector | |
| US5067335A (en) | Cylinder lock and locking tumbler | |
| US4615549A (en) | Dual backset latch | |
| CA2210936C (en) | Slide lock for retractable tape measure | |
| EP0431550A1 (en) | Key | |
| SK284082B6 (en) | Safety razor cartridge | |
| BG100707A (en) | Cylinder lock and key combination with a guiding profile ridge in the lock | |
| PL179490B1 (en) | Locking system with a cylinder lock and falt locking key | |
| CA1096650A (en) | Pickproof lock | |
| US4416128A (en) | Cylinder lock | |
| SK284385B6 (en) | Flat key for cylinder lock | |
| EP1815092B1 (en) | Key and lock | |
| NZ546514A (en) | Flat key as well as an associated cylinder lock | |
| US8281628B2 (en) | Profile key with local recess | |
| KR950009224B1 (en) | Safety lock and key | |
| KR20000067884A (en) | Lock system with key trapping | |
| US4927199A (en) | Latch assembly for cylinder lock | |
| WO1996003562A1 (en) | A cylinder lock/key combination, a key and a key blank therefor | |
| US1107376A (en) | Lock mechanism and key therefor. | |
| US8056380B2 (en) | Cylinder lock unit with an extra locking pin | |
| US4665726A (en) | Lock cylinder with rotatable magnetic tumblers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |