EP3299543A1 - Locking cylinder - Google Patents

Abstract

A lock cylinder with a core (2) rotatable in a housing (1) has a radially and axially displaceable coupling slide (11) for the optional solution or generation of a positive connection of the core (2) with a locking bit (7). The radial displacement direction of the coupling slide (11) extends in the longest radial extent of a closing channel (4). The lock cylinder has a high stability and is suitable for use in panic locks.

Description

The invention relates to a lock cylinder with a rotatable core in a housing and a cam, with a arranged in the core closing channel for introducing a key and with a positive engagement of the cam against the core selectively generating or releasing coupling slide.

Such, designed as a double lock cylinder lock cylinder is for example from the DE 103 17 448 A1 known. In this lock cylinder, an actuator is axially displaced by a key inserted into the lock channel. The actuating element releases the movement of a driver, which is biased by a spring force in the direction of the cam. In the released position of the driver, a positive connection between the core and the cam is generated. Unlocking of the lock cylinder is also made possible when the second core is coupled to the lock bit.

Furthermore, from the EP 1 719 861 A2 a lock cylinder for an electronic locking system has become known, in which a ring element is coupled to an inner actuating shaft and an axially displaceable coupling element generates or releases a positive connection between the ring element and the cam.

A disadvantage of the known Schleißzylindern, however, that they are constructed very expensive. In particular, the control of the driver via the actuating element requires a large number of components.

The invention is based on the problem, so to form a lock cylinder of the type mentioned so that it is particularly simple and has a high stability.

This problem is inventively solved in that the coupling slide is guided radially displaceable in the core for solving or generating the positive connection, that a key receptacle of the coupling slide a key receiving slope for the radial movement of the coupling slide in inserted into the lock key has and that the radial direction of movement of the coupling slide extends in the direction of the longest radial extent of the closing channel.

By this design, the positive connection between the lock bit and core is generated or released by a radial displacement of the coupling slide. By arranging the directions of movement, the key receiving bevel can be made very long and thus absorb large forces. In addition, a load of the key is avoided perpendicular to its flat side. The lock cylinder is thus particularly compact and simple.

According to another advantageous development of the invention, the coupling slide is guided reliably by the key inserted into the closing channel when a tip of the key laterally encompasses webs of the coupling slide which are spaced from the key receiving bevel. Thus, a very stable position three-point support of the driver can be generated on the key.

The transmission of the torque of the coupling slide in the direction of the cam designed according to another advantageous embodiment of the invention is particularly simple when a cam coupling of the coupling slide has cooperating with a lock bit sleeve form-fitting surfaces. The non-rotatable operative connection of the lock bit sleeve with the cam can be done via a simple toothing, a screw or by a one-piece component Schließbarthülse and cam. The lock bit sleeve can be made in various lengths, depending on the length of the lock cylinder.

The insertion of the key in the wear channel with twisted cam is easily made possible according to another advantageous embodiment of the invention, when the coupling slide is guided axially displaceable and the form-fitting surfaces in one axial position of the coupling slide with those of the lock bit sleeve and cooperate in the other axial position the Molded interfaces are separated from each other. By this design, the coupling slide for the same function is guided axially and radially displaceable. Thus, the key can be fully inserted into the lock channel to control pin tumblers. In this case, the coupling slide is moved axially and thus in the axis of the rotatable core. Since the positive-locking surfaces of the coupling slide and the lock bit sleeve do not work together when the locking cam is twisted, no positive connection is initially produced between the core and the sleeve. However, after an initial rotation of the core, the interlocking surfaces may intermesh grab and thus be generated in the intended rotational position of the positive connection between the core and lock bit sleeve.

The cooperating form-fitting surfaces of the lock cam and the coupling slide are structurally particularly simple according to another advantageous embodiment of the invention, when the cam bit and the coupling slide have opposing lugs, if the lugs in a radially inner position of the coupling slide have a distance from one another and in a radial outside position of the coupling slide produce a positive connection in the direction of rotation between the lock bit sleeve and the coupling slide.

The coupling slide is structurally particularly simple according to an advantageous development of the invention, when the key receiving bevel is arranged on a common axial portion as the webs and projects into the end of the closing channel. With this configuration, the webs and the key receiving bevel can embrace the tip of the inserted into the lock channel key.

The connection of the coupling slide with the lock bit designed according to another advantageous embodiment of the invention is particularly compact when the lock cam is spaced in the axial direction of the key receiving bevel.

The coupling slide has, according to another advantageous embodiment of the invention, a high stability when a base part of the coupling slide is arranged between the lock cam and the key receiving bevel.

The leadership of the coupling slide within the lock cylinder designed structurally particularly simple when the base and the core have mutually corresponding guide surfaces. The guide surfaces are to be arranged such that an axial and radial mobility of the coupling slide is made possible.

Fig. 1

einen Längsschnitt durch einen Schließzylinder mit einem teilweise eingeführten Schlüssel,

Fig. 2

einen Querschnitt durch den Schließzylinder englang der Linie II - II aus Figur 1,

Fig. 3

einen Längsschnitt durch den Schließzylinder aus Figur 1 bei vollständig eingeführten Schlüssel,

Fig. 4

einen Querschnitt durch den Schließzylinder englang der Linie IV - IV aus Figur 3,

Fig. 5

einen Längsschnitt durch den Schließzylinder aus Figur 1 bei verdrehtem Schlüssel,

Fig. 6

einen Querschnitt durch den Schließzylinder englang der Linie VI - VI aus Figur 5,

Fig. 7

eine perspektivische Darstellung eines Kupplungsschiebers des Schließzylinders mit einer Spitze des Schlüssels,

Fig. 8

eine gegenüber Figur 7 um 180° gedrehte Darstellung des Kupplungsschiebers.

The invention allows numerous embodiments. To further clarify its basic principle, one of them is shown in the drawing and will be described below. This shows in

Fig. 1

a longitudinal section through a lock cylinder with a partially inserted key,

Fig. 2

a cross section through the lock cylinder englang the line II - II off FIG. 1 .

Fig. 3

a longitudinal section through the lock cylinder FIG. 1 with fully inserted keys,

Fig. 4

a cross section through the lock cylinder englang the line IV - IV FIG. 3 .

Fig. 5

a longitudinal section through the lock cylinder FIG. 1 with twisted key,

Fig. 6

a cross section through the lock cylinder englang the line VI - VI off FIG. 5 .

Fig. 7

a perspective view of a coupling slide of the lock cylinder with a tip of the key,

Fig. 8

one opposite FIG. 7 rotated by 180 ° view of the coupling slide.

FIG. 1 shows a lock cylinder with two rotatably mounted in a housing 1 cores 2, 3. The movement of the cores 2, 3 can be connected via not shown Stiftzuhaltungen either with the housing 1 or release. The cores 2, 3 each have a closing channel 4, 5 for the introduction of a key 6 for driving the pin tumblers. Between the cores 2, 3, a cam 7 is arranged. The key 6 is designed as a flat key. The cam 7 is positively connected in the direction of rotation with two axially displaceable cam sleeves 8, 9. The Schließbarthülsen 8, 9 are held by a spring element 10 at a distance from each other and thus biased in the direction of the cores 2, 3. In each case, a coupling slide 11, 12 is rotatably guided in the cores 2, 3 and allows the generation or solution of a positive connection of the respective core 2, 3 with the respective Schließbarthülse 8, 9. The coupling slide 11, 12 via bolts 27, 28 by means of a schematically illustrated spring element 26 at a distance from each other and thus biased in the direction of the cores 2, 3.

In the illustrated position, the key 6 is only partially inserted into the one closing channel 4. Thus, the coupling slide 11 and cam 8 are on this page the lock cylinder axially separated. The positive connection of the coupling slide 11 is therefore released from the lock bit sleeve 8. The positive connection of the other coupling slide 12 of the other cam sleeve 9 is also released, so that the cam 7 is freely rotatable. Thus, this lock cylinder is suitable for use in so-called panic doors or for electrically controllable locks in which the possibility must exist, the cam 7 unrestrained to move from the control of the cores 2, 3.

FIG. 2 shows a sectional view through the lock cylinder FIG. 1 along the line II - II in the region of a Schließbartkupplung 13 one of the coupling slide 11 with the opposite cam disc 8. The cam 8 has a radially inwardly facing nose 14, while the coupling slide 11 has a radially outwardly facing nose 15.

Moves out from the position FIG. 1 the key 6 completely into the closing channel 4, the tip of the key 6 passes against the coupling slide 11 and moves it in the radial direction and in the axial direction. In a corresponding rotational position of the cam 7, however, a closing of the lock cam 13 is prevented. In this rotational position of the coupling slide 11 presses the lock bit sleeve 8 in the cam 7. The coupling slide 11 and the lock bit sleeve 8 are thus one above the other, so that there is no positive connection of the two components in the direction of rotation.

FIG. 4 shows to illustrate that by inserting the key 6 in the closing channel 4, the lugs 14, 15 are superimposed by the radial movement of the coupling slide 11. Thus, coupling slide 11 and cam 8 are still separated from each other in the direction of rotation. Furthermore, the show Figures 2 and 4 in that the radial direction of movement of the coupling slide 11 extends in the direction of the longest radial extent of the key 6 designed as a flat key and thus of the closing channel 4.

Due to the complete insertion of the key 6 in the closing channel 4, however, the pin tumblers are driven and the core 2 can be rotated relative to the housing 1. In this case, the coupling slide 11 slides over the lock bit sleeve 8 until the lock cam 13 engages and generates a positive connection between the coupling slide 11 and the lock bit sleeve 8 in the direction of rotation. This position is in FIG. 5 shown. The lock bit sleeve 8 is pressed back into the core 2. The coupling slide 11 penetrates axially in the lock bit sleeve 8 a. Subsequently, the core 2 and also the cam 7 can be rotated by means of the key 6.

FIG. 6 shows in a sectional view through the lock cam 13 FIG. 5 along the line VI - VI that the nose 15 of the coupling slide 11 and the nose 14 of the lock bit sleeve 8 engage each other and thus form fit surfaces 16, 17 for coupling the coupling slide 11 with the lock bit sleeve 8 in the direction of rotation.

FIG. 7 shows enlarged one of the coupling slide 11 in a perspective view together with the tip of the key 6. The coupling slide 11 has a key receptacle 18 for receiving the tip of the key 6, a base 19, which is guided in the core 2, and a half of the lock cam 13, which with the lock bit sleeve 8 from the FIGS. 1 to 6 interacts. The base 19 has guide surfaces 20 with which it is rotatably and axially and radially slidably connected to the core 2. The key holder 18 has a key receiving bevel 21, which cooperates with a ramp 22 at the tip of the key 6 for the radial movement of the coupling slide 11. The tip of the key 6 laterally encompassing webs 23 are spaced from the key receiving bevel 21. The ends of the base 19 limit with stop surfaces 24, the radial mobility of the coupling slide eleventh

FIG. 8 shows the coupling slide 11 FIG. 4 from the opposite side to the lock dog clutch 13 with the nose 15.

Since the key receiving bevel 21 of the coupling slide 11 cooperates with the ramp 22 of the tip of the key 6, it is not enough to unlock the lock cylinder to control only the pin tumblers. In addition, to produce the positive connection of the core 2 with the cam 7 and the coupling slide 11 must be controlled.

Claims (9)

Lock cylinder with a housing (1) rotatable core (2) and with a cam (7), with a in the core (2) arranged closing channel (4) for inserting a key (6) and with a positive engagement of the cam ( 7) relative to the core (2) optionally generating or releasing coupling slide (11), characterized in that the coupling slide (11) for solving or generating the positive connection is radially displaceable in the core (2), that a key receptacle (18) of the Coupling slide (11) has a key receiving bevel (21) for radial movement of the coupling slide (11) in the closing channel (4) inserted key (6) and that the radial direction of movement of the coupling slide (11) in the direction of the longest radial extent of the closing channel (4 ) runs. Lock cylinder according to claim 1, characterized in that a tip of the key (6) laterally encompassing webs (23) of the coupling slide (11) from the key receiving bevel (21) are spaced. Lock cylinder according to claim 1 or 2, characterized in that a lock cam coupling (13) of the coupling slide (11) with a lock bit sleeve (8) cooperating positive-locking surfaces (16, 17). Lock cylinder according to claim 3, characterized in that the coupling slide (11) is guided axially displaceable and the positive-locking surfaces (16, 17) in one axial position of the coupling slide (11) with those of the lock bit sleeve (8) cooperate and in the other axial position the form-fitting surfaces (16, 17) are separated from each other. Lock cylinder according to one of claims 1 to 4, characterized in that the lock bit sleeve (8) and the coupling slide (11) opposing lugs (14, 15), that the lugs (14, 15) in a radially inner position of the coupling slide ( 11) have a distance from each other and in a radially outer position of the coupling slide (11) produce a positive connection in the direction of rotation between the Schließbarthülse (8) and the coupling slide (11). Lock cylinder according to one of claims 2 to 5, characterized in that the key receiving bevel (21) on a common axial portion as the webs (23) is arranged and projects into the end of the closing channel (4). Locking cylinder according to one of claims 3 to 6, characterized in that the lock cam coupling (13) in the axial direction of the key receiving bevel (21) is spaced. Lock cylinder according to one of claims 3 to 7, characterized in that between the lock cam (13) and the key receiving bevel (21) a base part (19) of the coupling slide (11) is arranged. Lock cylinder according to claim 8, characterized in that the base part (19) and the core (2) have mutually corresponding guide surfaces (20).

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