EP2685030A2 - Lock cylinder with associated key - Google Patents

Abstract

The lock cylinder has a cylinder core (2) that comprises a key channel (4) for insertion of a flat key (30), and is rotatably mounted in the housing cavity (3). A bearing bore (13) is extended parallel to a core pin bore and transversely to the displacement direction of a locking bar (9). A locking pin (14) has a drive slope (17) on which a portion is engaged to the bore of a control pin (20), such that the depth of a recess of the key is viewed. The control pin has a control bevel (21) that is formed of conical or truncated cone surface for receiving the key.

Description

The invention relates to a lock cylinder with a housing housing having a housing and a rotatably mounted in the housing cavity cylinder core having a keyway for inserting a matching key, wherein lead into the key channel Kernstiftbohrungen which are aligned in a blocking position with housing pin holes and in which from the breast side in the key cut Codierungsausnehmungen are stored in a release position displaceable tumbler pins, with a cylinder core associated locking bar which engages in a locking position with a locking portion in a locking groove of the housing cavity and is supported with a support portion on a bearing pin mounted in a bearing pin, wherein the bearing bore parallel extends to the core pin hole and transverse to the direction of displacement of the locking bar, wherein the blocking pin by means of a control profile of the matching key against the restoring force he arranged in the cylinder core spring from a blocking position can be brought into a release position in which the support portion can enter into an evasion niche of the locking pin to reach a release position of the locking bar, wherein the blocking pin has at its opposite end of the spring a control slope at the one first section of a transversely displaceable to the bearing bore control attacks that scans the depth of a broad side recess of the key with a section opposite the first section.

A generic lock cylinder is in the JP 2002-194934 described. The control is there a ball.

From the DE 195 19 600 A1 a cylinder lock with security key is known in which the key broadside of scanning elements is scanned.

A lock cylinder with matching key also describes the WO 96/20324 , Again, recesses of the key shank are scanned by tumbler pins.

In the CH 647 837 A5 a blocking pin is provided which is supported by a spring at the bottom of a bearing bore. The blocking pin has a plurality in the axial direction one behind the other by circumferential grooves separate blocking sections, wherein the intermediate grooves form evasion niches into which a support portion of a locking bar can enter in a release position, so that the locking bar, which engages in a blocking position in a locking groove can emerge there. The blocking pin is sorted by a step of the key in its release position. The key also has breast-side cuts for sorting core pins stored in coring holes.

The DE 102 20 078 B3 describes a lock cylinder with a key having a broad side recess which is scanned by a locking pin. The locking pin cooperates directly with a displaceable in Schlüsseleinsteckrichtung locking bar, wherein truncated conical control slopes occur against each other.

The one of the US 5,079,936 lock cylinder described has a housing, a rotatably mounted in a housing cavity cylinder core with a key channel in which a key can insert, which sorts core pins by means of breast-side Codierungsausnehmungen. A supplementary lock is sorted over broadside pits. The supplementary tumbler interacts via a control bevel with another pin tumbler, which is displaceable parallel to the core pin.

The EP 1816 288 A2 describes a key with breast-side coding recesses that form a vertex that is scanned by a sensing end of a core pin. The sensing end of the core pin is formed by an off-center extension of a guide portion of the core pin. The coding recess has a side wall which is parallel to the key broadside side surface.

The DE 27 03 464 A1 describes a flat key in which the Codierungsausnehmungen have side surfaces which extend in a parallel plane to the Schlüsselbreitseitenflächefläche.

The AT 002 535 U1 describes a lock cylinder with pin tumblers, whose core pins have eccentrically arranged scanning ends.

The invention has for its object to increase the locking security of a generic lock cylinder.

The object is achieved first by the invention defined in claim 1, wherein initially and essentially provided that the control slope of a blocking pin is a conical or Kugelstumpfmantelfläche and the control is a control pin, the first portion also forms a conical or truncated cone surface. Unlike the generic state of the art, the control is elongated because it is a pen. A portion of the pin forms the cone or truncated cone shell-shaped Control slope, which also cooperates with a conical or truncated cone surface. Conical surface lies on conical surface. Between the two sections of the control pin is a cylindrical portion with which the control pin is mounted in a bearing bore. This makes it possible to provide the side of the key channel, which points to the storage of the blocking pin, with grooves and ribs. This wall of the key channel can thus have a deeply incised variation profile. The control slope is opposed by a second section, with which the depth of a Breitseitenveriefung of the key is scanned. The control pin preferably has no radially projecting projections or radially inwardly projecting recesses but a smooth-walled surface. The control pin and cooperating with it locking pin can be rotationally symmetrical. The blocking pin in particular has a peripheral annular groove into which a support portion of the locking bar can dip. This has the effect that the blocking pin can fulfill its function in any arbitrary rotational position. This facilitates in particular the assembly.

The bearing bore of the control pin or the bearing bore of the blocking pin can be blind holes, which have a constant cross-section. This facilitates the production. It is also advantageous if the bores to be introduced into the cylinder core are parallel or transverse to one another and in particular transversely or parallel to the direction of extension of the cylinder core. The spring loading the blocking pin acts on the control pin via the control ramps. The spring is arranged to urge the control pin toward the keyway. The tax slope of the control pin opposite the scanning end of the control pin is thus acted upon not key inserted against a stop and inserted in the key channel key against the key broadside surface or in one in the Schlüsselbreitseitenfläche incised broadside recess. The stop may be located in the substantially rectangular envelope surface of the keyway having grooves and ribs. In particular, the stop may be formed by a rib projecting into the enveloping surface, against which a circumferential section of the control pin rests when the key is not inserted. The rib forming the stop preferably lies on the same keyway wall in which the bearing bore bearing the control pin also opens. The locking bar has a locking portion which protrudes in a blocking position into a locking groove of the wall of the housing cavity. The locking groove extends in the axial direction along the wall of the housing cavity and has circumferentially inclined groove walls. The locking strip is acted upon by locking strip springs in the radial outward direction, wherein the locking strip springs are supported on the cylinder core. They are in particular in receiving openings. The support portion of the locking bar is supported with not inserted key from a blocking portion of the locking pin. The blocking pin is held by the spring in the blocking position. If a matching key is pushed into the keyway, the control pin is moved transversely to the insertion direction of the keyway and transversely to the direction of displacement of the blocking pin. The control pin displaced over the oblique edge attack the blocking pin in an axial position in which the support portion of the locking bar can enter an evasion niche of the blocking pin. The alternative niche is preferably formed by a peripheral annular groove. The key shank preferably has a plurality of broad side depressions lying one behind the other in the insertion direction. The cylinder core has a corresponding number of control pins, each cooperating with a locking pin, which cooperates with a respective support portion of the locking bar. The abutment of the blocking pin springs is formed by a support strip. The support strip can be formed by a spring pin be, which rests in a recess formed by a longitudinal slot. The depression crosses the mouths of several bearing bores of the blocking pins and is held in particular by clamping in the depression. The width of the recess is slightly smaller than the diameter of the spring pin. In order to bring the spring pin into the depression, it must be elastically narrow.

A development of the invention, which has an independent meaning, relates to the development of the core pins. The core pin according to the invention has a scanning section and a locking section. The locking portion has an end face which is in the release position, which allows rotation of the cylinder core, in the interface between the cylinder core and housing cavity. The locking section having a substantially circular floor plan has a second, the first opposite end face, projects from the off-center of the locking portion. The blocking section may also have a circular floor plan. It forms relative to the locking portion of an eccentric pin, the end of which forms the sensing end, which can scan the apex of the broad side recess of the key shank.

The core pin hole is designed as a blind hole. The bottom of the core pin hole forms a stop surface against which the end face of the locking portion rests when the key is not inserted. At the opposite end face of the housing pin is supported, which in turn is acted upon by a tumbler, which is supported on the bottom of the housing pin bore. The bottom of the core pin bore has an eccentrically located opening through which the eccentric pin projects. As a result of this arrangement, the core pin can not rotate in the core bore, although its components each have a circular floor plan.

The invention also relates to a matching key to the lock key, which is characterized in that it has only on one of its two broad sides Codierungsausnehmungen. If the key is designed as a reversible key, coding incisions are cut into the key shank from both narrow sides pointing away from one another, with the coding recesses each extending over only one of the two broad sides. In cross-section of the key shank has a point-symmetrical with respect to the key center axis shape. On the back of each narrow side associated coding incisions are continuous profile grooves / ribs. The coding incisions arranged along a narrow side of the key are thus each associated with only one of the two broad sides of the key shank. They have side walls which extend in a parallel plane to the key center plane or to the key broadside side surface, the side walls of the coding notches preferably extending in the key center plane. The section of the opposite broad side, which runs along the key narrow side has no coding incisions, but throughout profile grooves or profile ribs.

Figur 1:

eine Seitenansicht auf ein Ausführungsbeispiel der Erfindung;

Figur 2:

eine perspektivische, teilweise aufgebrochene Darstellung des erfindungsgemäßen Schließzylinders;

Figur 3:

einen Schnitt gemäß der Linie III - III in Figur 1;

Figur 4:

einen Schnitt gemäß der Linie IV - IV in Figur 1;

Figur 5:

den Schnitt gemäß der Linie V - V in Figur 3;

Figur 6:

den Schnitt gemäß der Linie VI - VI in Figur 4;

Figur 7:

den Schnitt gemäß der Linie VII - VII in Figur 4;

Figur 8:

einen erfindungsgemäßen Schlüssel in perspektivischer Darstellung,

Figur 9:

eine Darstellung des Schlüsselschaftes,

Figur 10:

den Schnitt gemäß der Linie X - X in Figur 9;

Figur 11:

den Schnitt gemäß der Linie XI - XI in Figur 9;

Figur 12:

eine erste Explosionsdarstellung und

Figur 13:

eine zweite Explosionsdarstellung.

An embodiment of the invention will be explained below with reference to accompanying drawings. Show it:

FIG. 1:

a side view of an embodiment of the invention;

FIG. 2:

a perspective, partially broken view of the lock cylinder according to the invention;

FIG. 3:

a section along the line III - III in FIG. 1 ;

FIG. 4:

a section along the line IV - IV in FIG. 1 ;

FIG. 5:

the section along the line V - V in FIG. 3 ;

FIG. 6:

the section according to the line VI - VI in FIG. 4 ;

FIG. 7:

the section according to the line VII - VII in FIG. 4 ;

FIG. 8:

a key according to the invention in perspective,

FIG. 9:

a representation of the key shaft,

FIG. 10:

the section along the line X - X in FIG. 9 ;

FIG. 11:

the section according to the line XI - XI in FIG. 9 ;

FIG. 12:

a first exploded view and

FIG. 13:

a second exploded view.

The lock cylinder shown in the drawings has a cylinder housing 1 with a cylinder portion and a flange portion. The cylinder portion has a housing cavity 3, in which a cylinder core 2 is inserted. In the flange portion are housing bores 6, in which supported on tumblers housing pins 8 are.

The cylinder core 2 has a key channel 4 for insertion of a key shank 31 of a key 30. In the narrow side of the key channel 4 open core pin holes 5, which are aligned in the blocking position with the housing pin holes 6. In the core pin holes 5 stuck by their length the key secret defining core pins 7, each having a locking portion 44 and an eccentric pin 42 projecting therefrom. The outer outline contour of the cross section of the key channel 4, so its envelope surface is approximately rectangular. From the long sides of the rectangle that goes through the bottoms of the grooves, coding ribs protrude into the keyway.

The core pin holes 5 are formed as blind holes with a bottom 39 which has an opening 40 at an eccentric position. The locking portion 44 has a housing pin bore 6 facing end face 45 on which an end face of the housing pin 8 is supported in the locking position. The locking portion 44, which has a circular outline, also has an end face 41, protrudes from the eccentric point an eccentric pin 42 which projects through the eccentric bore 40. When not keyed key 30, the end face 41 is supported on the bottom 39. When inserted appropriate key of the locking portion 44 displaces the housing pin 8 completely from the core hole 5. An inappropriate key displaces the core pin 7 into the housing bore. 6

The inserted into the keyway 4 shaft 31 of the key 30 has profile ribs 46, 47 and a profile groove 32 which forms a guide groove. In the profile grooves 47 of the key shank 31 protrude profile ribs of the side walls of the key channel 4. In the forming between the profile ribs of the key channel grooves engage the profile ribs 46 of the turning flat key designed as a key 30 a. In the guide groove 32, the guide rib 25 engages. The key has coding cuts 35 on both opposite narrow sides. The coding cuts 35 form side edges which form a vertex 37 which is scanned by the scanning end 43 of the eccentric pin 42. The coding recesses 35 form half-sided breast incisions of the key shank. They have a side surface 36 which extend approximately in the key midplane 49. As a result of this embodiment has the breast incision 35 opposite broad side of the key shank 31 continuous profiled grooves 47 and profile ribs 46. Because of the point-symmetrical configuration of the key cross-section are equally shaped profile ribs / grooves 46, 47 and coding cuts 35 diagonally opposite. The key shank 31 has two key narrow sides 48, 48 'running essentially parallel to one another. Since the key is a flip flat key, the FIG. 9 both the one broadside and the other broadside, since both broadsides are designed the same. Along a narrow side 48 'extending continuously ribs 46 and intermediate profile grooves 47. Along the opposite narrow side 48 of the coding cuts 35 are arranged.

In addition to the breast incisions 35 which can be scanned from the narrow side 48, 48 'of the key channel 4, the key shank 31 has broad side recesses 34 which can be scanned from the broad side of the key channel 4. These broad side depressions 34 are scanned by control pins 20. The key secret may be defined by the length of the control pins 20 and the axial displacement of the locking pins 14 with evasion niche 16.

The control pins 20 are stuck in bearing bores 26 which have a constant cross-section. The bearing bore 26 is the lateral surface of the cylinder core 2 and opens into the key channel 4. Before the mouth of the bearing bore 26 is a tread rib 25. In the embodiment, it is a guide rib. This rib is rooted on the bearing bore associated side wall of the keyway 4 and forms a stop 24, against which a stop portion 23 of the sensing end 22 of the control pin 20 abuts. The scanning end 22 protrudes in a sufficient distance in the key channel 4 to enter the broad side recess 34 of the key can.

The scanning end 22 of the opposite end of the control pin 20 forms a control slope 21, which is formed as a result of the rotational symmetry of the control pin 20 of a conical surface. The peripheral contour of the control pin 20 is substantially free of steps. It has a cylindrical lateral surface, to which the conical surface 21 on one side and on the other side a stop section 23 running on a frustoconical surface connects, which merges into the scanning end 22. The control pin 20 has largely the shape of a barrel, wherein it deviates substantially by the design of one of the two end faces of the ideal barrel shape, namely, has a conical shape.

In the bearing bore 26 opens a bearing bore 13, which extends transversely to the bearing bore 26 and parallel to the core pin hole 5. In this bearing bore 13, a rotationally symmetrical locking pin 14 is mounted. The blocking pin 14 has a control bevel 17, which is designed as a conical surface and which protrudes into the region of the bearing bore 26 for the control pin 20. The conical surface 17 is supported on the conical surface 21, wherein the two conical surfaces are approximately in line with each other.

The control slope 17 opposite end of the blocking pin 14 is acted upon by a reversing pressure spring 18, which is supported on a clamping pin 19. The clamping pin 19 is designed as a spring pin and clamped in a longitudinal slot 50 which crosses the mouths of a plurality of bearing bores 13.

There is at least one blocking section 15 between the two ends of the blocking pin 14. This is a region of largest diameter, and an evasion niche 16, which is designed as an annular groove. This is an area of the smallest diameter.

In the lateral surface of the cylinder core 2, a longitudinal slot 29 is incorporated, which supports a locking bar 9. The locking bar 9 has support portions 11 which can protrude into the bearing bores 13 of the blocking pin 14. The support portions 11 protrude from a locking portion 10 of the locking bar 9.

In a blocking position of the locking portion 10 of the locking bar 9 protrudes into a locking groove 12 which extends in the axial direction of the housing housing 3 in the wall of the housing housing 3 and has the walls extending obliquely in the circumferential direction. In the locked position, the support portion 11 of the locking bar 9 is supported on the blocking portion 15 of the blocking pin 14 such that the locking portion 10 protrudes positively into the locking groove 12 so that a rotation of the cylinder core 2 is blocked.

The key channel 4 can be generated by clearing. The core pin bores 5 are produced by means of a drill or a milling cutter. Into the bottoms 39 of the core pin bores 5, the eccentric openings 40 are bored. Parallel to the core pin holes 5, the bearing bores 13 are drilled, the mouths are connected to a longitudinal slot 50 together. crosswise to the core pin holes 5 and the bearing holes 13 for the blocking pin 14, the bearing bores 26 are drilled for the control pins 20, which then extend transversely to the extension direction of the keyway wall. Drilled in parallel with these bearing bores 26 are holes through which the support sections 11 can protrude into the bearing bore 13. Further, bores 28 are drilled between these openings, on the bottoms of which locking strip springs 27 can be supported, which act on the locking strip 9 in the locking groove 12. There are a total of 2 Sperrnutenfedern 27 is provided.

In a blocking position, not shown, in which no key is inserted into the key channel 4, the interface between the cylinder core 2 and housing housing 3 is crossed by the core pin 7. The locking portion 10 of the locking bar 9 is located in the locking groove 12. The locking bar 9 can not emerge from the locking groove 12, since previously the support portion 11 occurs against the blocking portion 15 of the blocking pin 14. The control slope 21 is supported on the control slope 17. The abutment portion 23 is located on the stop 24. The scanning end 22 projects into the keyway 4th

If a matching key 30 is pushed into the keyway, the core pins 7 and the control pins 20 are displaced in the radially outward direction (see FIGS. 3 and 4 ). This is done against the restoring force of the housing pin spring or the locking pin spring 18. If the key 30 is fully inserted with its key shank 31 in the key channel 4, the scanning 43 of the eccentric pin 42 keys their associated vertices 37 of the breast incisions 35 and the sensing ends 22 of Control pins 20 from their associated broadside recesses 34. In this case, the housing pin 8 is completely displaced from the core pin hole 5 and the blocking pin 14 is brought into an axial position, in which the support portion 11 in the evasion niche 16 can occur. In this position, the lock cylinder can be rotated. A rotation causes a slanted wall of the locking portion 10 slides along the inclined wall of the locking groove 12, so that the locking portion 10 of the locking bar 9 from the locking groove 12 can dive.

If the lock cylinder is rotated back into the blocking position, the locking strip springs 27 displace the locking strip 10 back into its locking position.

In the embodiment described above, both the invention relating to the control of the locking bar 9 and the invention relating to the configuration of the core pins 7 are embodied. It should be noted that in each case only one of the two technical innovations can be realized in embodiments not shown. Thus, for example, in an embodiment not shown provided that the blocking pin 14 at its spring 18 opposite end has a control slope 17 on which a control slope 21 of a transversely displaceable to the bearing bore control pin 20 attacks, with its the control slope 21 opposite end 22 the Depth of a broad side recess 34 of the key 30 scans. In this embodiment, although the core pin has a rounded floor plan, which also protrudes into the keyway 4 through an opening 40 arranged in the bottom 39 of the core pin bore 5. However, the scanning section 42 originates at the center of the locking portion 44. In this embodiment, not shown, the opening 40 is in the region of the center of the bottom 39. The scanning section 42 scans in this embodiment, but also the apex 37 of a broadside recess 35 of the key 30, which Broad side recess 35 has a parallel to the key broad side side surface 36. at In this exemplary embodiment, the center axis of the core pin bore is offset laterally relative to the key center plane 49.

In another embodiment, also not shown, the core pins 7 have the shape shown in the drawings, wherein the rounded in cross-section scanning portion 42 projects through an eccentrically arranged in the bottom 39 of the core pin hole 5 opening 40 in the keyway 4. The control of the locking bar 9 takes place here but in a conventional manner or the lock cylinder has no additional locking bar.

All disclosed features are essential to the invention. The disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application. The subclaims characterize in their optionally sibling version independent inventive developments of the prior art, in particular to make on the basis of these claims divisional applications.

LIST OF REFERENCE NUMBERS 1 cylinder housing 27 Ledgers spring 2 cylinder core 28 Spring bearing bore 3 housing cavity 29 longitudinal slot 4 keyway 30 key 5 Core pin bore 31 key shaft 6 Housing pin bore 32 profile groove 7 core pin 33 profile rib 8th housing pin 34 Broadside recess 9 locking bar 35 chest incision 10 blocking portion 36 side surface 11 support section 37 vertex 12 locking groove 38 web 13 Bearing hole for locking pin 39 ground 14 blocking pin 40 eccentric opening 15 blocking portion 41 front 16 evasive niche 42 eccentric pin 17 Control slope / taper surface 43 scanning 18 feather 44 blocking portion 19 clamping pin 45 face 20 control pin 46 profile rib 21 Control slope / taper surface 47 profile groove 22 scanning 48, 48 ' narrow side 23 stop section 49 Key midplane 24 attack 50 longitudinal slot 25 rib 26 Bearing bore of control pin

Claims (15)

Locking cylinder having a housing (1) having a housing cavity (3) and a cylinder core (2) rotatably mounted in the housing cavity (3), which has a key channel (4) for inserting a suitable key (30), wherein the keyway (4 ) Kernstiftbohrungen (5) open, which are aligned in a blocking position with housing pin bores (6) and in which from the chest side in the key (30) cut Codierungsausnehmungen (35) in a release position movable tumbler pins (7, 8) are mounted, with a cylinder core (2) associated locking bar (9) which engages in a blocking position with a locking portion (10) in a locking recess (12) of the housing cavity (3) and with a support portion (11) on a in a bearing bore (13) mounted blocking pin (11) 14) is supported, wherein the bearing bore (13) parallel to the core pin bore (5) and transversely to the displacement direction of the locking bar (9), wherein the blocking pin ( 14) by means of a control profile of the matching key (30) against the restoring force of a cylinder core (2) arranged spring (18) can be brought from a blocking position into a release position in which the support portion (11) in an evasion niche (16) of the blocking pin ( 14), to achieve a release position of the locking strip (9), wherein the blocking pin (14) at its spring (18) opposite end has a control slope (17) on which a first portion (21) of a transverse to the bearing bore displaceable control element (20) attacks that with a first portion (21) opposite the second portion (22) the depth of a broad side recess (34) of the key (30) scans, characterized in that the control slope (21) of the blocking pin is a conical or truncated cone lateral surface, and in that the control element is a control pin (20) whose first section (21) is likewise a conical or truncated cone lateral surface. Lock cylinder according to one or more of the preceding claims or in particular according thereto, characterized in that the control pin (20) and / or the blocking pin (14) is formed rotationally symmetrical Locking cylinder according to one or more of the preceding claims or in particular according thereto, characterized by a cylindrical section arranged between the first section (21) and the second section (21) of the control pin (20), with which the control pin (20) in its bearing bore (26 ) is stored. Lock cylinder according to one or more of the preceding claims or in particular according thereto, characterized in that the bearing bore (13, 26) of the blocking pin (14) and / or the control pin is a blind bore with a substantially constant cross-section. Lock cylinder according to one or more of the preceding claims or in particular according thereto, characterized in that the spring (18) loading the blocking pin (14) acts on the control pin (20) in the direction of the key channel (4). Lock cylinder according to one or more of the preceding claims or in particular according thereto, characterized in that the control bevel (21) opposite the end of the control pin (20) in non-inserted key (30) bears against a stop (24) extending in the envelope surface of the In particular, the rib (25) is formed by the keyway wall having the bearing bore (26) of the control pin (20) , Lock cylinder according to one or more of the preceding claims or in particular according thereto, characterized in that the locking bar (9) in particular by a plurality of locking bar springs (27) in the locking groove (12) is acted upon. Locking cylinder according to one or more of the preceding claims or in particular according thereto, characterized by a plurality of locking pins (14) each cooperating with a control pin (20). Lock cylinder according to one or more of the preceding claims, the preamble of claim 1 or in particular according thereto, characterized in that the blocking pins (14) acting on springs (18) on a clamping pin (19) are supported. Lock cylinder according to one or more of the preceding claims or in particular according thereto, characterized in that the clamping pin (19) rests in particular in a clamping manner in a longitudinal slot (50) crossing the mouth of a plurality of bearing bores (13). Locking cylinder having a housing (1) having a housing cavity (3) and a cylinder core (2) rotatably mounted in the housing cavity (3), which has a key channel (4) for inserting a suitable key (30), wherein the keyway (4 ) Kernstiftbohrungen (5) open, which are aligned in a blocking position with housing pin bores (6) and in which from the chest side in the key (30) cut Codierausnehmungen (35) can be brought into a release position core pins (7) are mounted, a lock portion (44) and an eccentrically projecting therefrom scanning portion (42), characterized in that the sensing portion (42) has a rounded outline and by an eccentrically in the bottom (39) of the core pin hole (5) arranged opening (40) in the keyway (4) protrudes , Lock cylinder according to one or more of the preceding claims or in particular according thereto, characterized in that the locking portion (44) and / or the scanning portion (42) has a circular floor plan. Lock cylinder according to one or more of the preceding claims or in particular according thereto, characterized in that the locking portion (44) has two mutually facing away faces (41, 45), wherein an end face (41) with not key inserted at the bottom (39) of the core pin hole (5) rests and the opposite end face (45) in the rotation of the cylinder core (2) enabling the release position in the interface between the cylinder core (2) and housing cavity (3). Locking cylinder according to one or more of the preceding claims or in particular, with associated key, characterized in that the scanning end (43) of the scanning portion (42) engages in a broad side recess (35) of the key (30) having a parallel to the key broadside side surface (36). Key (30), in particular turning flat key in particular for a lock cylinder according to one or more of the preceding claims, with coding recesses (35) cut into the key shank (31) from one or both key narrow sides (48, 48 '), one from the scanning end (43). a tumbler pin (7) scannable vertex (37) and one in particular approximately in the center of the key parallel to the key center plane (49) extending side surface (36), characterized in that along a key narrow side (48, 48 ') extending coding recesses (35) respectively having only one broad side of the key shank (31) are assigned, wherein the respectively the coding recesses (35) opposite portion of the other broad side of the key shank (31) continuous profiled grooves / ribs (46, 47).

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