CZ162494A3 - Flat key and/or lockable pin-tumbler - Google Patents

Abstract

A lock cylinder with a cylinder housing (1), with a cylinder plug (2) and with a keyway (3) has a rotatable body, especially a star wheel (7), which engages in the latter and is mounted in the cylinder plug (2) and which has a rotary shaft (10) and is displaceable together with its rotary shaft (10) in the direction of height of the keyway (3). In the blocking position, the rotary shaft (10) projects upwards or downwards beyond the cylinder plug (2) and engages into a housing bore (12, 13). A flat key (5) has a toothing oblique relative to the insertion direction, especially a row of holes along a hole track (8, 8', 8'', 8'''), into which, when the key (5) is inserted into the keyway (3), the rotatable body engages positively in the manner of the kinematics of a pinion along a rack. By means of bevels in the region of the toothing, especially by means of oblique bores (9) of the row of holes (8, 8', 8'', 8'''), or by means of bevels (14) on the engagement surfaces of the rotatably mounted body, especially on the end faces of arms of the star wheel (7), a lifting movement occurs during engagement for the purpose of controlling the height of the rotary shaft (10) acting as a blocking pin. Instead of the oblique arrangement of the row of holes, it is sufficient to offset at least one hole (9') in height in relation to the preceding hole. Furthermore, the hole (9'') can also have a base surface (15) which is oblique, as seen in the insertion direction, and along which the star wheel (7) ascends. <IMAGE>

Description

Flat key and / or locking cylinder

Technical field

The invention relates to a flat key and / or a lock cylinder with a cylindrical core rotatable in a body in which a key guide is provided and with a body, in particular a gear wheel or rotatably mounted in a cylindrical core of a key guide. The guide and / or its extraction from the guide engages in a flat key, in particular a toothing or a series of holes.

rotating cross, and protruding into

BACKGROUND OF THE INVENTION

In the embodiment of the flat key and locking insert known from AT-PS 380 513, the rotary cross in the cylindrical core engages in a series of flat key holes in the form of a kinematics of the rack and pinion connection. The distance between the holes must be adapted to the geometry of the rotary cross, with the holes and the cross at the same height so that the key can be fully inserted into the keyway. If, instead of a flat key, a plate is inserted to manipulate the lock, then the key guide is locked by a swivel cross arm turned into the key guide that hits the plate. This makes the unlocking more difficult.

SUMMARY OF THE INVENTION It is an object of the invention to provide an embodiment of a flat key in which a body rotatably engaging in a key guide and cooperating with a flat key, in addition to its alternating interaction with a flat key, is assigned a locking function between the cylinder core and the cylinder of the lock.

SUMMARY OF THE INVENTION The pivoting cross and protruding into the

This object is accomplished by a flat key and / or a lock cylinder with a cylindrical core rotatable in a body in which the key guide is provided and with a body, in particular a gear or rotatably mounted in a cylindrical core of a key guide. and or pulling it out of the conduit engages a flat key, in particular a toothing or row of holes, according to the invention, which is characterized in that the rotatable body is rigidly connected to the rotary axis and the rotary axis is movable in its axial direction and of the cylindrical core extendable into recesses in the cylindrical body, and that the flat key is provided with a toothing arranged at an angle to the longitudinal axis of the flat key, respectively a series of holes along the punching track or a series of holes in which optionally at least two holes are at different heights relative to the longitudinal axis keys, or at least one hole with an ascending control surface or a control edge for additional transmission of the axial movement, in particular of the stroke movement, to the rotatable housing and its rotary axis.

The rotatably mounted body not only rotates, but also adjusts its height, by rolling with a shape adaptation to the surface or by interfering with the key or penetrating the key. When the key is inserted into the key guide, the pivot axis rigidly connected to the pivoted body rotates about its axis and at the same time moves up or down. The rotary axis is in its initial position inserted into the recess of the cylindrical body and blocks the rotation of the cylindrical core. The rising punch path on the flat key lifts the pivot axle acting out of the recess so that rotation of the cylindrical core in the cylindrical body is released. This upward or downward movement against the resilient force is carried out smoothly on an ascending or descending row of holes. In many cases, however, it is sufficient for a series of holes to run horizontally, for example, and only when the last effective hole has been inserted is the pivotally mounted body, in particular the rotary cross, whether it is four, five or six arms.

According to a preferred embodiment of the invention, the pivot axis is housed in a hole that follows the chord of circular cross-section of the cylindrical core, further when the length of the pivot axis corresponds to the length of the chord, and when the pivot axis is rotatable in engagement with the spanner. in which it projects from the cylindrical core to a position in which the pivot axis is completely within the envelope surface of the cylindrical core.

If the rotary body, i.e. the rotary cross, is raised too high by a series of holes in the key, then the rotary axis is inserted into a further recess at the opposite end. It is therefore advantageous if the hole in the cylindrical core is extended at both ends into the cylindrical body. The rotation of the cylindrical core is then released only in a single height position of the rotatable body. This effect can also be achieved by a pin mounted in the cylindrical body and loaded by a spring, lifting the rotary axis.

The rotatably mounted body can be resiliently loaded in the direction of the locking position. The oblique course of a series of holes counteracts the force of the spring. When the flat key is inserted into its guide, the position of the rotary body changes axially against the spring force. At a predetermined built-in position, it is not necessary to use a spring, since the locking position or the starting position is determined by the force of gravity.

In order to raise the rotatable housing, in accordance with a particularly preferred embodiment of the invention, the plurality of holes or the punching path, when viewed from a cross-section of a flat key, consist of inclined holes which raise or lower the housing from its basic position. As the rotary body is rotated inwardly into the key, the body slides on the inclined inner surfaces of the holes as viewed from the cross-section of the flat key. The rotatable housing changes its axial height position, for example the rotatable housing formed as a four-, five- or six-arm swivel cross moves upward when sliding on the inclined surfaces when sliding on sloped surfaces or sliding into slots. until it reaches the end position.

However, an ascending or descending row of holes may also be provided in the flat key. Advantageously, the at least one hole is in the longitudinal section roughly in the form of a rectangular triangle, whose hypotenuse in the direction of the tip of the flat key is descending and whose chords extend between the hypotenuse and the spine of the flat key parallel to or in a perpendicular direction. wherein one arm of the rotary cross slips upward and lifts the rotary cross or the like when rotating out of the hole and at an inclined position along the hypotenuse. When the flat key is inserted, the swivel arm, which first engages the flat key hole, is disengaged; in this case, the arm is tilted more and more from the perpendicular position to the flat key until it comes out of the hole. During swiveling to an inclined position, the trailing edge of the arm slides along the hypotenuse of the approximately triangular hole outward, the arm, and hence the swiveling cross or the like, due to kinematics starting to interfere with the hole before being disengaged. This applies to all designs. Essential in the formation of the holes is the ascending bottom (hypotenuse) as well as the vertical edge (branch) intended to support the arm of the rotary cross. The end of the hole at the top of the spanner is free. Furthermore, it is advantageous if the rotatably supported body is designed as a rotary cross with arms bent in the direction of rotation.

raises. Next arm by the previous arm

According to a further advantageous embodiment, the pivotally mounted body is provided with radially extending or cranked arms or teeth which are provided with chamfers in the engagement area of the flat key or in the area of their engagement with the flat key. It is particularly preferred that these chamfers are conical or pyramidal flat pieces, wherein the axis of the cone or pyramid coincides with the pivot axis of the rotatably mounted body.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a lock insert with a rotatably mounted body according to the invention in the locking position of the key insertion; FIG. FIG. 5 shows a cross-sectional view along the VV line of FIG. 4, FIG. 6 in principle a flat side of the tooth of a flat FIG. Fig. 7 is a cross-sectional detail of the cooperation of the rotatable housing with the key, Fig. 8 the same cooperation of the rotatable housing with the key as in Fig. 7, but 9a shows a particular hole shape and FIG. 9b in cross section above lifting the arm in the hole of FIG. 9a.

DETAILED DESCRIPTION OF THE INVENTION

A cylindrical core 2 with a flat key 5 is rotatably mounted in the lock body 1 of the lock cylinder. The dotted line indicates the usual pins 4, embedded in the cylindrical core 2 and in the cylindrical body 1, which cooperate with the toothing of the flat key 5. a recess 6 in the cylindrical core 2 is provided with a rotatable support body protruding laterally next to the flat key guide 5, which protrudes into the guide 2 formed here as a rotary cross 7. The rotary cross 7 with four or more arms 21 cooperates with the punching path 8 ( 4) in the flat key 5. When the flat key 5 is inserted, the arms 21 of the rotary cross 7 engage in succession into the holes 9 (or recesses) so that the rotary cross 7 rolls like a pinion on the toothed rack.

As shown in FIGS. 1 and 2, the rotary cross 7 is non-rotatably mounted on a rotary axis 10, which is rotatably and axially displaceably received in a hole 11 in the cylindrical core 2. For better clarity, the rotary axis 10 and rotary cross 7 are shown in FIG. 1 and 2 are indicated by simple lines. The recess 6 allows the rotary cross 2 to be moved vertically 2 ·

The pivot axis 10 acts as a locking pin and protrudes in its initial position (FIG. 1) out of the cylindrical core 2, either by gravity or a spring (not shown) into the groove or hole 12 of the cylindrical body 1.

The punching path 8 extending obliquely to the longitudinal axis of the flat key 5 (for example ascending) causes, by means of the holes 9 led obliquely in the cross-section of the flat key 5 with the rotation of the rotary cross 7 at the same time by lifting it. The stroke H corresponds to the height distance of the first effective hole 9 from the last effective hole 9 in the flat key 5 (FIG. 4). The stroke H may be changed by varying the inclination of the punching path 8, 8 ', 8' ¹ . Punched lane 8 ^{1 1 1} may be sloped downwards when turnstile 7 in its recess 6 in the uppermost position and is held by the spring force when inserting the turnstile 7 which monitors the punch path ⁸¹¹¹ by compressing said spring displaces downwardly. The hole 13 then has, like the hole 12, a locking function for the pivot axis 10.

In FIG. 2, the hole 11 of the cylindrical core 2 crosses the chord in cross-section. The length 'of the pivot axis 10 corresponds to the length of this chord. This produces only a single free position, as shown in FIG. 2, in which the pivot axis 10 does not extend beyond the cylindrical core 2 at both ends. If the stroke H generated by the flat wrench 5 does not match, then the pivot axis 10 will not fully extend from hole 12 or not yet slipped into. This effect could also be achieved by means of a spring pin provided in the extension of the hole 12 in the cylindrical body 1, with its front side abutting the pivot axis 10. The release is then achieved only when the contact surface of the pin 4. a rotatable axle 10 is exactly at the level of the shell surface of a cylindrical core pin 2 would then maintain swivel base 7 of the recesses 6, as in the starting position, so that the compression of the rotatable shafts 10 and the pin downwards is preferable punched lane 8 ^'11th

The spring of this very top in

As shown in FIGS. 2 and 5, it can achieve the changes the height position of the turnstile 7 slanted hole 9, in a cross sectional view, and ascending or descending path punched 8 8 ^1. 8 ¹ ', 8 ^{1 1 1} . However, chamfers 14 may also be provided on the arms 21 of the swivel cross 7, with the swivel cross 2 rising up along these chamfers 14 as its arms 21 gradually rotate in succession into the holes 9 of the punching path 8 (Figs. 7 and 8). .

Instead of through holes 9, recesses or teeth can be provided laterally on the side of the flat key 5.

In Fig. 4, holes 9 ¹ are further illustrated as an alternative to holes 9 of the punching path 8, of which the last hole 9 ¹ lies somewhat higher than the other holes 9 ¹ . ^{For the} function is already sufficient if only one hole 9 ¹ has a height distance equal to the stroke H, or when its bottom surface at an angle so turnstile 7 is raised.

Also shown in FIG. 4, there are shown holes 9 ^{1 1} as an alternative to the previously described the holes 9, 9 ^1, which have a roughly triangular shape. The hypotenuse 15 (FIG. 9a) is formed from the tooth 16 to the back 17 of the flat key 5 ascending towards its head 18, one leg 19 being vertical, thus perpendicular to the back 17, and the other leg 20 being approximately horizontal. The arm 21, for example a five-arm spanner 7, has a rectangular cross-section. This arm 21 abuts on the bottom of the triangular hole 9 ' ¹ when it is inserted, as shown in FIG. 9a. If the flat key 5 is pushed further, the arm 21 pivots to an inclined position (see the dashed line in FIG. 9b) and slides upwards on the rising edge or the surface of the overhang 15 upwards because the arm 21 rests on one side 19 on the front. As the oblique position increases, the arm 21 moves upwards, and hence the rotary cross 7 with it, until the arm 21 is moved out of the hole 9 ¹¹ . Thereafter, however, the other arm 21 again engages in another hole 9 ''. The extension and extension of the arms 21 are performed in an overlapping manner. The arm 21, or all the arms 21 of the respective rotary cross 7, may be angled as shown in FIG. 8 on one arm 21. This results in an approximately rectangular engagement and a very oblique extension of the arm 21, thereby achieving a particularly effective height displacement in the arm. working with a single hole 9 '' or a corresponding row of holes 9 ^{1 1} .

For the function of FIGS. 9a and 9b, the chamfer of the hole 9 '' (hypotenuse 15) is essential, as is the support (leg 19). The hole 9 ¹¹ need not have the shape of a triangle, but an opening, for example in the form of a semicircle, may be provided above the chamfer (hypotenuse 15).

Claims (9)

PATENT CLAIMS A flat key and / or a lock cylinder with a cylindrical core rotatable in a body in which a key guide is provided and with a body, in particular a gear or rotary cross, rotatably supported in a cylindrical core and projecting into a key guide which movement when inserting the key into the guide or or pulling out of the guide engages in a flat key, in particular a toothing or row of holes, characterized in that the rotatably mounted body is fixedly connected to the rotary axis (10) and the rotary axis (10) is displaceable in its axial direction and at least at one end from the cylindrical core (2) extendable into recesses (12, 13) in the cylindrical body (1), and that the flat key (5) is provided with toothing arranged obliquely to the longitudinal axis of the flat key ( 5), respectively a series of holes along the punching path (8, 8 ', 8' ', 8' '') or a series of holes in which at least two holes are optionally at different heights, respectively or at least one hole with an ascending control surface or control edge for additional transmission of axial movement, in particular a stroke movement, to the rotatably mounted body and its rotary axis (10). Flat key and / or locking insert according to claim 1, characterized in that the rotary axis (10) is housed in a hole (11) that follows the chord of the circular cross-section of the cylindrical core (2), further that the length of the rotary axis (10) corresponds to the length of the chord, and that the pivot axis (10) is a pivot body engaging the flat key (5), extending from the locking position in which it projects from the cylindrical core (2) to the pivot axis position (10) completely within the envelope surface of the cylindrical core (2). Flat key and j or locking insert according to claim 1 or 2, characterized in that the hole (11) in the cylindrical core (2) is extended at both ends into the cylindrical body (1). Flat key and / or locking insert according to one of Claims 1 to 3, characterized in that the rotatably mounted body is resiliently loaded in the direction of its locking position. Flat key and / or locking insert according to one of Claims 1 to 4, characterized in that the row of holes or the punching path (8, 8 ', 8' ', 8' ''), viewed in cross section with a flat key (5), comprises inclined holes 49) which raise or lower the rotatably mounted body when the rotatably mounted body engages. Flat key and / or locking insert according to one of Claims 1 to 4, characterized in that the at least one hole (9 '') is approximately rectangular in shape in longitudinal section, whose hypotenuse (15) in the direction of the flat key tip. (5) is oriented in a descending direction, and whose shanks (19, 20) extend between the hypotenuse (15) and the spine (17) of the spanner (5) parallel to, or perpendicular to, the spanner (5), 21), when rotating out of the hole (9 '') and at an inclined position along the overhang (15), the rotary cross (7) slides upwards and lifts the rotary cross (7) or the like. Flat key and / or locking insert according to one of claims 1 to 6, characterized in that the rotatably mounted body is designed as a rotary cross (7) with arms (21) angled in the direction of rotation. Flat key and / or locking insert according to one of Claims 1 to 4, characterized in that the rotatably mounted body is provided with radially extending or crank arms or teeth which are in the engagement region with the flat key (5) or in the region of their engagement in a flat key (5), provided with chamfers (14). The flat key and / or locking insert according to claim 8, characterized in that the chamfers (14) are conical or pyramidal flat pieces, wherein the axis of the cone or pyramid coincides with the pivot axis (10) of the rotatably mounted body.