ES2695035T3 - Closure cylinder - Google Patents

Abstract

Closure cylinder (1) with a core (3) that can be moved in a housing (2), with a locking mechanism (9) that has a locking pin (12), for blocking or releasing the movement at choice of the core (3), and with an electric drive installation for movement or release of the movement of the locking pin (12) between the position that locks the core (3) with respect to the housing (2) and the position that it releases the movement of the core (3), a locking element (28, 32) being held in a position that releases the movement of the core (3) with respect to the housing (2) and can move when vibrations are introduced in a blocking position the movement of the core (3), characterized in that the locking element (28, 32) is prestressed by a clamping spring element (27, 30, 31) essentially transversely with respect to its direction of movement and that the element clamping spring (27, 30, 31) can be pretend sado by an adjustment screw (29, 33, 34).

Description

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

65

DESCRIPTION

Closure cylinder

The invention relates to a locking cylinder with a core that can be moved in a housing, with a locking mechanism having a locking pin, for locking or releasing the movement of the core, and with a drive installation for moving or releasing the movement of the locking pin between the position that locks the core with respect to the housing and the position that releases the movement of the core, a locking element being held in a position that releases the movement of the core with with respect to the housing and being able to move when introducing vibrations in a position that blocks the movement of the core.

This type of closing cylinders is usually controlled by an electronic access code through an electronic control device. The access code can be arranged, for example, in an electronic key. If there is an authorization to unlock the closing cylinder, the locking mechanism is controlled in such a way that the locking pin is either held in an unlocking position or the locking mechanism actively moves the locking pin to the locking mechanism. unlocked position.

An electronic locking system for a closing cylinder is known from EP 0 388 997 A1. In the case of this closing cylinder, an electromagnetic mechanism generates protection against manipulation when vibrations are introduced. The mechanism has two rods, coils, permanent magnets and several spring elements. Due to this the closing cylinder has a very laborious structure.

From US 4 982 587 A a closure cylinder has been known, in which a rod is held in the base position outside the movement of the core. In the case of an attempt to manipulate according to the method of picking, the rod passes between the casing and the core and blocks the movement of the core.

DE 20 2004 016 988 U1 discloses a closing mechanism with a magnetic tamper safety device. The closing mechanism has a stop element that can be moved by an electromagnet. The stop element interacts with a locking element, which protrudes from a driver of a closing cylinder and activates a closing mechanism of a lock.

A locking cylinder of this type is known, for example, from EP 1 148 189 A1 and has an electromagnet for securing an anchoring device connected to the locking pin in case of a control of the locking mechanism. The locking pin guided by the housing and pretensioned in the direction of the core in a position in which the closing cylinder is unlocked is also secured with the anchoring device. If a control is not produced, the locking pin is pushed by a spring element towards a core bag and blocks the continuation of its movement.

A closing cylinder is also known from EP 1 380 714 A2, in which case the locking mechanism has a piezoelectric element, which holds the locking pin on its cladding surface in the unlocked position in a force-fit connection. In the unlocked position of the closing cylinder, the locking pin does not hold. The locking pin is then pushed by a spring element towards a core bag and blocks the continuation of its movement.

It has also been known from EP 1 516 983 B1 a closing cylinder, in which case the locking mechanism has a piezoelectric element, which drives the locking pin through a contact surface. The locking pin is moved in the event of applying current to the piezoelectric element in an active manner from the unlocked position to the locked position towards a bag in the core.

In the case of the closing cylinders there is generally the problem that by means of the so-called picking by hitting on locking rods the closing cylinder can be brought from the locked position to the unlocked position. The aforementioned closing cylinders prevent hit picking of this type because the locking pin is not accessible from the outside.

The invention is based on the problem of reliably avoiding other conceivable possibilities of unlocking the closure cylinder by vibrations or shocks introduced into the closure cylinder.

This problem is solved according to the invention because the locking element is prestressed by a clamping spring element essentially transversely with respect to its direction of movement and that the clamping spring element can be prestressed by an adjusting screw.

By means of this configuration, the closing cylinder according to the invention can be locked in addition to the closing mechanism, in addition by means of the locking mechanism. However, in the basic state, blocking is prevented by the blocking element, since the locking element is held in the position that releases the movement of the core. In this basic state, the closure cylinder according to the invention can be closed in a

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

65

simple by controlling the locking mechanism. If, however, vibrations are introduced into the closure cylinder according to the invention, the locking element moves independently of the control of the locking mechanism to the position which blocks the movement of the core. In this way, the conceivable possibility of unlocking the locking cylinder according to the invention by vibrations is reliably avoided. The clamping forces of the locking element can be generated easily, since the locking element is prestressed by a clamping spring element essentially transversely with respect to its direction of movement. The clamping forces of the locking element can be adjusted in a simple manner because the clamping spring element can be prestressed by an adjusting screw.

The fastening of the locking element is configured according to another advantageous development of the invention in a particularly simple manner as far as the construction is concerned, when the fastening of the locking element presents in the position that releases the movement of the core with respect to the housing , a union by force drag. The frictional connection can be produced, for example, by tightening forces directed transversely to the direction of movement of the locking element. The vibrations acting on the locking element exceed these clamping forces above a certain force and thus enable a release of the movement of the locking element to the position that blocks the movement of the core.

The intended direction of movement of the blocking element when introducing vibrations can be fixed in accordance with another advantageous development of the invention in a simple manner when the clamping spring element is inclined towards a force attack surface towards the blocking element, so that a The force component prestresses the locking element transversely with respect to its direction of movement and a force component prestresses the locking element in the direction of the core.

A frictional connection for fastening the locking element can be avoided in a simple manner according to a further advantageous development of the invention by means of two clamping spring elements that are opposite one from the other pre-stressed towards the locking element. By means of this configuration the blocking element can be pre-hooked in case of vibrations in the position that blocks the movement of the core. It contributes to the further simplification of the construction of the closing cylinder when the locking element is guided in the form of a rod longitudinally displaceable by the housing and when the core has a bag for receiving one end of the blocking element.

The invention allows numerous embodiments. For further clarification of its basic principle several of them are represented in the drawing and are described below. This shows in

Fig. 1 a partial section of a closing cylinder according to the invention with a key inserted,

Figs. 2a-2c enlarged respectively a partial area of the closing cylinder of figure 1 as an embodiment not according to the invention with a locking mechanism and a locking element in different positions,

Fig. 3a a sectional representation of the closure cylinder of figure 1a along the line Illa-Illa, as an embodiment not according to the invention,

Fig. 3b the closure cylinder not according to the invention of Fig. 3a after the introduction of vibrations,

Figs. 4-5 different embodiments of the closure cylinder according to the invention.

Figs. 6-11: different embodiments of closure cylinders not according to the invention.

Figure 1 shows a closure cylinder 1 in partial section with a core 3 that can be moved in a housing 2, and with a locking bit 4 coupled with the core 3. In a closing channel 5 arranged in the core 3 there is introduced a key 6 with a transponder 7. The closing cylinder 1 has an electronic control device 8 for the detection and evaluation of the signals of the transponder 7 and a locking mechanism 9 that can be controlled by the control device 8. The interaction of the control installation 8 and the configuration of the locking mechanism 9 is explained in detail in EP 1 148 189 A1, EP 1 380 714 A2 and EP 1 516 983 B1, so that for the disclosure of these components it is referred to this documents.

The key 6 inserted into the closing channel 5 displaces a first control element 11 prestressed by a control spring element 10. The locking mechanism 9 has a locking pin 12, which is arranged in the position shown completely in the Furthermore, a locking element 13 in the form of a rod is disposed in the casing 2, which is disposed in a manner opposite to a second control element 14 also in the form of a rod, guided by the core 3. A plane The separation between the locking element 13 and the second control element 14 is arranged in the plane of separation between the housing 2 and the core 3. In this way, the locking cylinder 1 is in the unlocked position, so that the latch closure 4 can be turned by means of the key 6.

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

65

Figures 2a-2c show in a greatly enlarged manner a partial area of the closing cylinder 1 of figure 1 as an embodiment not according to the invention, with the locking pin 12, the blocking element 13, the two control elements 11 , 14 and adjacent zones of the closing channel 5 in different positions.

The unlocked position of FIG. 1 with the key 6 authorized to close the closing cylinder 1 is shown in FIG. 2a in an enlarged manner. The first control element 1 has recesses 15, 16 for the locking pin 12 and for the second control element 14. In this way the movements of the locking pin 12 and the second control element 14 are released. The release of the pin blocking 12 leads to the locking pin 12 being moved by the control device 8 and a locking spring element 17 between the released position shown and a closed position, in which the movement of the core 3 is not released. In the illustrated embodiment, the locking spring element 17 and the locking mechanism 9 thus form an actuating device for the movement of the locking pin 12. Naturally, the locking pin 12 can be moved in another embodiment not represented only by a suitable actuator in the locking mechanism 9. The blocking element 13 disposed below the second control element 14 is opposite a bag 18 in the core 3 and is held in the position shown by dragging of force in the core 3. A blocking spring element 19 pretenses the blocking element 13 in the direction of the bag 18 of the core 3.

Figure 2b shows the closure cylinder 1 in base position with free closing channel 5. In this case it can be seen that the first control element 11 is prestressed towards the interior of the closing channel 5. The first control element 11 has two projections 20, 21 for the support of the locking pin 12 and the second control element 14. The support of the locking pin 12 leads to a blockage of the movement of the core 3 with respect to the housing 2. The closing cylinder 1 thus finds itself in the case of a free closing channel always in the closed position. The support of the second control element 14 leads to the separation plane between the second control element 14 and the blocking element 13 being in the plane of separation between the housing 2 and the core 3.

Figure 2c shows the closing cylinder 1 during the unlocking attempt with a handling tool 22 inserted in the closing channel 5 when vibrations are introduced into the closing cylinder 1. As when the key 6 shown in figure 2a is introduced, the first control element 11 was moved and the movements of the second control element 14 and of the locking pin 12 were released in this way. Since the control of the locking mechanism 9 is suppressed, the locking mechanism 9 is in the locked position shown in figure 2b. The introduction of vibrations could however lead to the blocking pin 12, as shown, rising against the force of the blocking spring element 17, so that in the most disadvantageous case there would no longer be a blockage However, the introduction of vibrations also leads to exceeding the force-locking connection of the locking element 13, and thus to the locking element 13 being accessed by force of the locking element 13. locking spring 19 to core bag 18. In this way, the blocking element 13 ensures, in the event of introducing vibrations, the reliable blocking of the closing cylinder 1. Between the projections 20, 21 and the recesses 15, 16 of the first element 11, control ramps 23, 24 are arranged, due to which the locking pin 12 and the blocking element 13 when removing the key 6 shown in figure 2a or the handling tool 22 rep shown in Figure 2c, access again to the base position shown in Figure 2b.

Figure 3a shows a sectional representation through the closure cylinder 1 of figure 1 as an embodiment not according to the invention along the line Illa-Illa. In this case it can be seen that the force-pulling connection for fastening the blocking element 13 is produced by a pressure plate 25, which is prestressed by a clamping spring element 26 transversely with respect to the direction of movement of the clamping element. blocking element 13.

Figure 3b shows the closing cylinder 1 of figure 3a during the introduction of vibrations. In this case it can be seen that the frictional connection for holding the blocking element 13 has been overcome in the position shown in FIG. 3a and the blocking element 13 is pushed by the force of the locking spring element 19 to the sack 18

FIG. 4 shows another embodiment according to the invention of the closing cylinder 1, in which case a holding spring element 27 can be prestressed to prestress a locking element 28 by an adjusting screw 29. The spring element of FIG. The fastening 27 is arranged with a slight inclination towards the direction of movement of the blocking element 28 and thus has a force component acting perpendicularly in the direction of movement of the blocking element 28 and a force component acting in the direction of movement of the locking element 28 on the core 3. The clamping spring element 27 will therefore push the locking element 28 when introducing vibrations, towards the sack 18 of the core 3. The pre-tensioning of the blocking element 28 by the element of The clamping spring 27 gives rise to a force connection for clamping the locking element 28 in the housing 2.

Figure 5 shows another embodiment according to the invention of the closing cylinder 1, in which case two clamping spring elements 30, 31 opposite one another are pre-stressed against a blocking element 32.

5

10

fifteen

twenty

25

30

35

40

The two clamping spring elements 30, 31 are respectively prestressed by adjusting screws 33, 34 and arranged slightly inclined with respect to the direction of movement of the blocking element 32.

6 shows a non-inventive embodiment of the closing cylinder 1, in which case a blocking element 35 is held in place by a magnet 36. A blocking spring element 37 pretenses the blocking element 35 in direction of the core 3. The prestressing of the blocking element 35 by means of the magnet 36 gives rise to a force connection for fastening the blocking element 35 in the housing 2.

7 shows a non-inventive embodiment of the closing cylinder 1, in which case a blocking element 38 is held by the force of gravity in its position outside the core 3. When vibrations are introduced the blocking element 38 will go against the force of gravity to the plane of separation between the casing 2 and the core 3.

Figure 8 shows an embodiment according to the invention of the closing cylinder 1, in which case a

blocking element 39 has a conical section 42. A clamping plate 41 prestressed by an element of

the clamping spring 40 is prestressed against the conical section 42 of the locking element 39, so that a force component of the clamping element 40 pretenses the blocking element 39 perpendicular to its direction of movement and holds it in this way in its position by means of a force drag connection. Another force component of the clamping spring element 40 pretenses due to the conical configuration of the section 42, the blocking element 39 in the direction of the core 3. The function of this embodiment corresponds to that of figure 4.

Figure 9 shows a non-inventive embodiment of the closure cylinder 1, in which case a pulse element 43 supports a blocking element 44. The impulse element 43 has a stem 46

arranged between a stop 45 and the blocking element 44 and pushes the blocking element 45 on entering

vibrations, in the nucleus direction 3.

Figure 10 shows a non-inventive embodiment of the closure cylinder 1, which differs from that of figure 9 only because an impulse element 47 has several balls 48. The balls 48 are disposed between an element of blocking 49 and a stop 50 in the housing 2 and pushing the blocking element 49 in the event of introduction of vibrations, in the direction of the core 3.

FIG. 11 shows an embodiment according to the invention of the closing cylinder 1. In this embodiment, a locking spring element 51 is disposed on the side remote from the core 3, of a blocking element 52. Between the element of locking 52 and locking spring element 51 is disposed an impulse element 53 with a shank 54.

The locking elements 44, 59, 52 of the embodiments not according to the invention according to FIGS. 9 to 11 are structured as that of FIG. 8 and fastened in the closing cylinder 1. In particular, the blocking elements 44, 49 52, which interact with the pulse elements 43, 47, 53, of FIGS. 9 to 11, not according to the invention, are configured as the corresponding stoppers 45, 50 of hardened steel.

Claims (5)

5 10 fifteen twenty 25 1. Closure cylinder (1) with a core (3) that can be moved in a housing (2), with a locking mechanism (9) that has a locking pin (12), for blocking or release at your choice of the movement of the core (3), and with an electrical drive installation for movement or release of the movement of the locking pin (12) between the position that locks the core (3) with respect to the housing (2) and the position that releases the movement of the core (3), a locking element (28, 32) being held in a position that releases the movement of the core (3) with respect to the housing (2) and can move when vibrations are introduced in a position which blocks the movement of the core (3), characterized in that the blocking element (28, 32) is prestressed by a clamping spring element (27, 30, 31) essentially transversely with respect to its direction of movement and that The clamping spring element (27, 30, 31) can be pre tensioned by an adjustment screw (29, 33, 34). Closure cylinder according to claim 1, characterized in that the fastening of the blocking element (28) in the position that releases the movement of the core (3) with respect to the housing (2), presents a force-tight connection . Closure cylinder according to one of the preceding claims, characterized in that the clamping spring element (27, 30, 31) is inclined towards the blocking element (28, 32), so that a force component pretenses the blocking element (28, 32) transversely with respect to its direction of movement and a force component pretenses the blocking element (28, 32) in the direction of the core (3). Closure cylinder according to one of the preceding claims, characterized by two clamping spring elements (30, 31) opposed to one another pre-stressed towards the blocking element (32). Closure cylinder according to one of the preceding claims, characterized in that the blocking element (28, 32) is guided in the form of a shank so that it can be displaced longitudinally by the housing (2) and that the core (3) has a sack (18) for receiving one end of the blocking element (28, 32).