EP0633374B1 - Flat key and/or cylinder lock - Google Patents

Description

The invention relates to a flat key and a Lock cylinder with a cylinder core rotatable in a housing, which is penetrated by a key channel, in the a body rotatably mounted in the cylinder core protrudes and for transmitting a rotary movement when inserting and removing the flat key in or out of the key channel engages in the flat key, the rotatably mounted Body firmly connected to an axis of rotation and the axis of rotation is displaceable in its axial direction and at least on one end beyond the cylinder core into a recess the housing can be inserted and the flat key Transmission means for transmitting an axial movement, in particular lifting movement, on the rotatably mounted body and has on its axis of rotation.

In an embodiment known from AT-B-380 513 it takes effect a turnstile on the cylinder core side in a row of holes Key in the type of kinematics of a rack and pinion connection on. It must be the hole spacing on the geometry of the turnstile and both must be in the same height, so that a key is completely in one Key channel can be inserted. Become a tile inserted instead of a key for the purpose of manipulation, then the key channel through the in the Turn the key channel in and push it against the plate Arm of the turnstile blocked. This leads to a further difficulty in scanning.

From WO-A-93/12314 there are locking cylinders and flat keys known, the latter on at least one flat side over one from the tip of the key to about to the Reide along a grooved line. That groove that functionally corresponds approximately to the key toothing, the Core and housing pins of a locking cylinder so that the cylinder core can be rotated in the cylinder housing. To grip core pins with a ring flange in the groove of the Flat key and are inserted when inserting the correct one Key raised to the release position. The one in positioning the pens possibly occurring uncontrolled Rotation of the pins has no influence on the actual one Unlocking process.

The invention aims to one in the key channel body rotating and interacting with the key, an exclusion function for a wrong key and a locking function between the cylinder core and cylinder housing assign.

This is done with a flat key and with a locking cylinder of the type described above achieved in that the rotatably mounted body in the cylinder core as a gear or Turnstile is formed that as a transmission medium in Flat key one along one at an angle to the key axis running hole track arranged row of holes with holes that the Push through the cross section of the flat key, or a row of holes with at least two at different heights on the key longitudinal axis, penetrating the flat key Holes or at least one such hole with increasing Control surface or control edge are provided and that in the engagement area between each hole and each tooth or arm one Gear or turnstile either on the hole side or on the gear wheel or turnstile side for axial change of position the gear or turnstile is arranged. A flat key is specially designed for one Lock cylinder with a cylinder core rotatable in a housing, which is penetrated by a key channel, in the a body rotatably mounted in the cylinder core protrudes and for transmitting a rotary movement when inserting and removing of the flat key in or out of the key channel engages in the flat key, the rotatably mounted Body firmly connected to an axis of rotation and the axis of rotation is displaceable in its axial direction and at least on one end beyond the cylinder core into a recess the housing can be inserted, and the rotatably mounted body is designed as a gear or turnstile, the Flat key transmission means for the transmission of an axial Movement, especially lifting movement, on the gear or Has turnstile and the transmission means in the flat key as one running along one at an angle to the key axis Hole track arranged row of holes with holes that cross-section of the flat key or a row of holes with at least two at different heights, based on the key longitudinal axis, penetrating the flat key Holes or at least one such hole with increasing Control surface or control edge are formed and in the engagement area between each hole and each tooth or arm one Gear or turnstile an inclined surface on the hole side for axial change of position of the gear wheel or turnstile is arranged. The gear or turnstile is made by positive Unroll along the flat side of a key by engaging or reaching through or through the key not only twisted, but also changed in its altitude. The one firmly attached to the gear or turnstile The axis of rotation rotates when a key is inserted into the key channel around its axis and migrates at the same time up or down. She dives into her starting position into a recess in the housing and blocked so the rotation of the core. The ascending track (Hole mark) on the key lifts the axis of rotation out of the recess out, so that the rotation of the core in the housing is free is. This raising or lowering against spring force takes place with an ascending or descending hole row continuously. In many cases, however, it is sufficient if the Row of holes e.g. runs horizontally and only that with Insert last effective hole the rotatably mounted body, especially the turnstile, be it four, five or six-armed, raises.

According to one embodiment, the axis of rotation is in a Bore that is a chord of the circular cross section of the cylinder core follows. The length of the axis of rotation corresponds to the length the tendon. The axis of rotation is in with the key Engaging gear or turnstile from one of the cylinder core outstanding locking position can be pushed into a position, in which the axis of rotation is entirely within the envelope Surface of the cylinder core lies. Rises the gear or the turnstile too high through the key hole then the axis of rotation appears in a further recess on opposite end. So the hole in the cylinder core is extended into the housing at both ends. The release the core is then only rotated in one Height position of the gear or turnstile. This effect can also be spring-loaded on the housing side reaches the housing pin moving up the rotating axis become.

The axis of rotation of the gear wheel or turnstile can be in the direction be spring loaded to a locked position. Against the spring force the oblique course of the hole track appears. When inserting the key into the key channel axial change of position of the gear or turnstile against the power of the spring. For a given installation position, the spring can omitted because gravity locked position or Starting position determined.

In order to raise the gear wheel or turnstile, is a special embodiment characterized in that that the hole track with a row of holes - in the key cross-section seen - includes inclined bores that engage the gear or turnstile this from its basic position raise or lower. In the course of turning the Gear or turnstile in the key slide the teeth or arms on the - seen in the key cross section - oblique Inner hole surfaces. The gear wheel or turnstile is changed in its axial altitude, for example the four-, five- or six-armed turnstile moves when inserted the key into the key channel by sliding it on on the inclined surfaces during the intervention or immersion the arms of the turnstile into the key recesses upwards until an end position is reached. But it can also an ascending or descending row of holes in the Keys should be provided.

It is useful if at least one cross-section between Key back and key bit through hole in longitudinal section approximately the shape of a right-angled triangle has, the hypotenuse as a control edge towards Key tip is sloping and its cathets parallel to the direction of insertion of the key or at right angles between the hypotenuse and the back of the key run, so that one arm of the turnstile when unscrewing out of the hole and when tilted along the hypotenuse slides up and the turnstile lifts. When inserting of the key initially comes into engagement with the hole arm of the turnstile gradually disengaged; the arm moves from a vertical position to The key always starts out at an angle until it emerges from the hole. The rear edge slides during the inclination of the arm along the hypotenuse of the approximately triangular hole up - the arm and thus the turnstile will result the kinematics raised. The next arm is already in a hole before the previous arm is still disengaged is coming. This applies to all embodiments. More essential in the formation of the hole is the rising sole (Hypotenuse) as well as a vertical support for the arm Edge (cathete). The completion of the hole up to Back of the key is arbitrary. The turnstile can be in Direction of rotation angled arms are formed.

In one embodiment of the invention, the gear wheel or the turnstile has radially protruding teeth or arms, those in the attack area on the flat key or in the area wear bevels when engaging in the flat key. For the kinematics, it is useful if the inclined surfaces gear or turnstile side as bevels in the form of Cone or pyramid surface pieces are formed, wherein the axis of the cone or pyramid with the axis of rotation of the Gear or turnstile coincides.

Embodiments of the subject matter of the invention are in the Drawings shown. Fig. 1 shows a cross section through a lock cylinder with the rotatably mounted according to the invention Body in the blocking starting position, Fig. 2 with inserted Key in the release position, Fig. 3 is a longitudinal section along the line III-III in Fig. 1 with a key 4 during insertion into the key channel Flat key in side view with three alternative embodiments of holes or hole arrangements, Fig. 5 one Cross section along line V-V in Fig. 4, Fig. 6 is a schematic diagram the flat side of a key bit with holes, the inclined to the possibility of variation are and therefore cause different stroke, Fig. 7 as a detail the interaction of a rotatably mounted body with the key in cross section, FIG. 8 the view of FIG. 7 from above, an arm is shown angled and Fig. 9a a special hole shape and Fig. 9b lifting of an arm in the hole according to Fig. 9a in cross section.

In a cylinder housing 1 is a cylinder core 2 with Key channel 3 rotatably mounted. The dash-dotted line 4 indicates the usual core and housing pins, which with the Work together toothing of a flat key 5. In a Recess 6 in the cylinder core 2 is on the side next to the key channel 3 a rotatably mounted body in the key channel 3 engages - shown here as turnstile 7 - intended. The turnstile 7 with four or more arms works with a hole 8 (FIG. 4) in a flat key 5 together. The arms grip when the key is inserted of the turnstile 7 one after the other into the holes 9 (Recesses) so that the turnstile 7 is like a pinion turns along a rack.

1 and 2 show, the turnstile 7 is on one Axis of rotation 10 arranged in a rotationally fixed manner, which in a bore 11 in the Cylinder core 2 is rotatably and axially displaceably mounted. For a better overview, axis of rotation 10 and turnstile 7 in 1 and 2 indicated only by simple lines. The recess 6 allows the height of the turnstile to be shifted.

The axis of rotation 10 acts as a locking pin and engages in the Starting position (Fig. 1), emerging from the cylinder core 2, under Action of gravity or a spring (not shown) in a groove or bore 12 of the cylinder housing.

The one that runs obliquely to the key's longitudinal axis (e.g. rising) Hole track 8 causes due to the key cross section (Fig. 5, Fig. 2) obliquely guided holes 9 with the rotation of the turnstile 7 simultaneous lifting the same. The stroke H corresponds to the height distance of the first effective bore 9 of the last effective bore 9 in Key 5 (Fig. 4). The stroke can be changed by changing the incline the hole track 8, 8 ', 8 "can be changed. The hole track 8 "'can also be directed downwards if the turnstile 7 in its recess 6 in the uppermost position by spring force is held and when inserting the turnstile 7 of the hole track 8 "'following, compressing the spring mentioned runs down. The bore 13 then has the Bore 12 locking function for the axis of rotation 10.

In Fig. 2, the bore 11 passes through the cylinder core 2 in Cross-section along a tendon. It corresponds to the length of the Axis of rotation 10 of the length of this tendon. This only results in a single release position, as shown in Fig. 2 is in which the axis of rotation with its two ends the cylinder core shell just not towered over. Is that about the Key 5 not transmitted stroke H, then the axis of rotation dips either not from hole 12 or already in the bore 13. This effect could also be caused by a in an extension of the bore 12 resilient housing pin can be achieved, the front on the axis of rotation 10 is present. The release takes place only when the touch area between housing pin and axis of rotation 10 exactly in the outer surface of the cylinder core 2 is. The feather of one such housing pin causes positioning as a starting point of the rotating core 7 at the top in the recess 6, so that for pressing down the axis of rotation 10 and the housing pin a hole track 8 "'is appropriate.

As shown in Figs. 2 and 5, the change in altitude can the turnstile 7 over the boring holes and the rising or falling hole track 8, 8 ', 8 ", 8"' can be achieved. But it can also be the turnstile 7 on the front be formed on the arms with bevels 14, wherein the turnstile rises along the bevels if the arms of the same one after the other in the holes 9 of the Screw in hole 8 (Fig. 7 and 8).

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

4 are the hole track as an alternative to the holes 9 8 further holes 9 'shown, the last of which is slightly higher than the others. It is sufficient for the function even if only one hole is at a height (H), or if the beard-side floor surface is slanted, so that the turnstile 7 is raised.

4 are holes 9 "as an alternative to the previously described holes 9, 9 'are shown, the approximately Have a triangular shape. The hypotenuse 15 (Fig. 9a) is from Key bit 16 to the key back 17 'obliquely against the Key crest 18 formed increasing, while the one cathete 19 runs vertically and the other cathete 20 is aligned approximately horizontally. An arm 20 of e.g. five-armed The turnstile 7 has a rectangular cross-section. He lies when engaging in the triangular hole 9 "at the bottom of the hole, as shown in Figure 9a; the key continues inserted, then the arm 20 is inclined (see dashed line in Fig. 9b) and slides along the ascending Edge or surface of the hypotenuse upwards, as the arm is supported on the face of the cathete 19. With increasing The arm 20 and thus the turnstile move obliquely 7 further up until the arm 20 emerges from the hole. But then the next arm reaches into the next one again Hole one. Intervention and exit overlap. The arm 20 or all arms of the turnstile concerned can in The rotational position may be angled, as shown in FIG. 8 for one of the arms 20 is shown for example. Thereby the intervention takes place approximately at right angles and the replacement very sloping, so that there is a particularly effective height shift in cooperation with a hole 9 "or one corresponding row of holes.

For the function according to FIGS. 9a, 9b, the slope (hypotenuse 15) essential, as well as a support (cathete 19). The hole 9 "need not have a triangular shape, but can above the slope (15) also e.g. a semicircular Possess opening.

Claims (6)

1. Flat key (5) and lock cylinder with a cylinder core (2) that can be tumed in a casing (1), with a key duct (3) extending through the cylinder core (2), and with a body that is mounted for rotation in the cylinder core (2) extending into the cylinder core (2), which body engages the flat key (5) when it is inserted into or withdrawn from the key duct (3) in order to transmit a rotating movement, with the body that is mounted for rotation being firmly connected to a rotating axis (10) which can be moved in its axial direction as well as beyond the cylinder core (2), at least on one end, and inserted into a recess (12, 13) in the casing (1), and with the flat key (5) being provided with transmission means to convey an axial movement, especially a lifting movement, to the body that is mounted for rotation and its rotating axis (10), characterized in that the body that is mounted for rotation in the cylinder core is embodied as gearwheel or tumstile (7), in that, as a means of transmission, there is provided in the flat key (5) a row of apertures that is located along an aperture track (8, 8', 8", 8'") which extends at an angle to the key axis, with the apertures (9) penetrating through the cross-section of the flat key (5), or that there is provided a row of apertures with a minimum of two apertures (9') that penetrate the key at different heights, in relation to the longitudinal axis of the key, or that there is provided a minimum of one aperture (9"), having an inclined control surface or control edge (15), and in that, in the area of engagement, an inclined surface is provided on every gear of a gearwheel or arm of a turnstile (7), either on the side of the aperture or on the side of gearwheel or tumstile, in order to shift the position of the gearwheel of the tumstile (7) in the axial direction.
2. Flat key (5) and lock cylinder with a cylinder core (2) that can be tumed in a casing (1), with a key duct (3) extending through the cylinder core (2), and with a body that is mounted for rotation in the cylinder core (2) extending into the cylinder core (2), which body engages the flat key (5) when it is inserted into or withdrawn from the key duct (3) in order to transmit a rotating movement, with the body that is mounted for rotation being firmly connected to a rotating axis which can be moved in its axial direction as well as beyond the cylinder core (2), at least on one end, and inserted into a recess (12, 13) in the casing (1), and with the body that is mounted for rotation being embodied as gearwheel or turnstile (7), with the flat key (5) being provided with transmission means to convey an axial movement, especially a lifting movement, to the gearwheel or turnstile (7) and with the means of transmission in the flat key being embodied as a row of apertures that is located along an aperture track (8, 8', 8", 8"') which extends at an angle to the key axis, with the apertures (9) penetrating through the cross-section of the flat key (5), or as a row of apertures with a minimum of two apertures (9') that penetrate the key at different heights, in relation to the longitudinal axis of the key, or with a minimum of one aperture (9"), having an inclined control surface or control edge (15) and, in the area of engagement, with an inclined surface being provided on every gear of a gearwheel or arm of a turnstile (7), either on the side of the aperture or on the side of gearwheel or turnstile, in order to shift the position of the gearwheel of the turnstile (7) in the axial direction.
3. Flat key (5) according to Claim 2, characterized in that the aperture track (8, 8', 8", 8'") comprises a row of apertures with bores that extend at an angle, when seen in a cross-sectional view of the key, which row of apertures lifts or lowers the gearwheel or the tumstile (7) from its base position when the latter is engaged.
4. Flat key (5) according to Claim 2, characterized in that the row of apertures comprises a minimum of two apertures that penetrate the flat key (5) at different heights.
5. Flat key (5) according to Claim 2, characterized in that a minimum of one aperture (9") is provided which penetrates the cross-section between key shoulder and key bit and has approximately the shape of a rectangular triangle, the hypothenuse of which acts as a control edge (15) and is therefore oriented downwards in the direction of the key tip, and the catheti (19, 10) of which extend parallel to the inserting direction of the key (5) or at a right angle to it, always between the hypothenuse (15) and the key shoulder (17), so that one arm (20) of a tumstile (7) moves upwards and lifts the tumstile (7) when being rotated out of the aperture (9") and being in a slanting position along the hypothenuse (15).
6. Flat key and lock cylinder according to Claim 1, characterized in that, on the side of the gearwheel or turnstile, the inclined surfaces are embodied as chamfers (14) in the form of part of a conical or pyramidal surface, where the axis of the conus or pyramid coincides with the rotating axis (10) of the gearwheel or tumstile (7).

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