EP3662123B1 - Motor lock - Google Patents

Description

The present invention relates to a motor lock that can be operated both manually and with a motor, with at least one locking bolt that can be switched between a locking and a release position, an actuating element for manual switching of the locking bolt, and a drive motor for motor-driven switching of the locking bolt.

Such motor locks are used to selectively lock and release doors, gates and windows. When the locking bar it can be, for. B. be a sliding locking bolt or a pivoting locking hook. To increase the burglar protection, a motor lock can also be equipped with several locking bolts that can be changed individually or together. In particular, an electric motor which acts on the movable locking bolt via a gear mechanism can be provided as the drive motor.

The disadvantage of known motorized locks is that the adjusting element is relatively stiff, so that a comparatively high expenditure of force is required for manual actuation. This is due in particular to the fact that, in the case of manual actuation, a force is transmitted from the moving locking bolt to the shaft of the drive motor, the rotor of the drive motor and the possibly existing components of the motor gear are thus "rotated". From the user's point of view, the forceful actuation of the control element is a nuisance. If the gear mechanism acting between the drive motor and the locking bolt is self-locking, the motor lock cannot be operated manually at all.

In the U.S. 5,148,691 A a swivel bolt lock is disclosed which can be moved both manually and by motor and comprises two gear wheels arranged next to one another on the same shaft. One gear acts on the swivel lock, while the other gear acts as a driver.

the EP 2 525 025 A2 discloses a swivel bolt lock in which the power is transmitted from the motor to the swivel bolt via a rotatable activation pin.

In the SE 453 107 B a lock is disclosed whose bolt can be driven by an electric motor. The housing of the electric motor can optionally be fixed in the lock housing by means of an electrically adjustable pin. When the pin is pulled out, the electric motor can rotate in the lock housing so that manual operation is not hindered.

That in the U.S. 6,032,500 A disclosed lock comprises a bolt and a lock latch. The electrical actuation takes place via two lifting magnets. The force is transmitted to the bolt by a displaceable spring that interacts with a pin on the rotatable drive element.

the U.S. 5,199,288 A discloses a lock that can be operated either by an electric motor or by a lock cylinder. For manual operation, the power transmission between the motor and the bolt is interrupted in that a transmission fork is moved laterally out of engagement with a pin.

In the WO 2017/114534 A1 an electromechanical door lock is disclosed which comprises a pivot lever and a transmission gear mounted thereon.

It is an object of the present invention to design a motorized lock of the type mentioned at the outset in such a way that manual operation can be carried out with little effort.

The object is achieved by a motor lock with the features of claim 1.

According to the invention, a gear element that can be driven by the drive motor can be adjusted between at least one coupling position in which there is a drive-effective coupling between the drive motor and the locking bolt, and a decoupling position in which the drive-effective coupling between the drive motor and the locking bolt is interrupted, the motor lock having a Has control device which is designed to set the gear element for a motor-driven changeover of the locking bolt in the at least one coupling position and to set it in the decoupling position for a manual changeover of the locking bolt.

The operative connection between the drive motor and the locking bolt is therefore interrupted when the lock is operated manually. Therefore, when locking or unlocking manually, there is no transmission of force to the drive motor, so that the actuating element can be actuated with little effort. In the case of a motorized lock actuation, however, the gear element in the coupling position ensures that the drive force of the drive motor is transmitted to the locking bolt in the desired manner.

The control device is preferably designed to put the gear element back into the decoupling position after each motor-driven changeover of the locking bolt. The drive-effective coupling between the drive motor and the locking bolt is therefore only established when it is necessary, that is, when a motorized changeover process is to take place.

This ensures that the user can operate the motorized lock manually at practically any time with little effort.

The gear element can be set in two different coupling positions, in each of which there is a drive-effective coupling between the drive motor and the locking bolt, the decoupling position being between the two coupling positions, so to speak in a middle position. This opens up the possibility of providing a different transmission path for motorized locking than for motorized unlocking. In each of the two coupling positions, one of the two transmission paths is active while the other is inactive. From the decoupling position, the gear element can be moved into both the first and the second coupling position without first reaching the other coupling position.

The control device can be an electronic control device which correspondingly controls an electromagnetic actuator coupled to the transmission element. In particular, the control device can be designed to adjust the transmission element between the at least one coupling position and the decoupling position by controlling the drive motor. There is then no need for a separate drive to adjust the gear element. Rather, the setting of the gear element into the coupling position and the switching of the locking bolt into the locking position by means of the drive motor can take place immediately one after the other during continuous motor operation. Likewise, the setting of the gear element into the at least one decoupling position and the switching of the locking bolt into the unlocking position by means of the drive motor can take place immediately one after the other during continuous motor operation.

The invention provides that the gear element interacts via a driver with the locking bolt, which on the one hand is able to move in the event of a movement of the gear element in the direction of the at least one coupling position to act on a control element operatively connected to the locking bolt, and which, on the other hand, can be moved into a retracted position spaced from the control element by a movement of the gear element in the direction of the decoupling position. By withdrawing the driver from the control element, the effective drive connection between the drive motor and the locking bolt is separated and there is no power transmission from the locking bolt to the drive motor when the lock is operated manually. By moving the gear element in the opposite direction, the driver can be brought back to the control element. As soon as it strikes this, there is a drive-effective coupling between the transmission element and the control element in the corresponding direction.

According to the invention, the control element can be displaced.

According to the invention, the driver located in the retracted position is arranged completely outside of the movement path of the control element. In the case of manual lock actuation, the control element can thus be moved along with the locking bolt in any way without a force being transmitted to the drive motor. The control element can move freely between its extreme positions, defined for example by stops.

It can be provided that the locking bolt can be switched by moving a transmission element, the driver being arranged on the transmission element and being able to act upon the transmission element directly or indirectly when the transmission element moves in the direction of the coupling position. The transmission element can be a displaceable plate, rod or the like, which can be coupled to one or more connecting rod elements and is provided for controlling the locking bolt, for example via one or more swivel bolts. By means of such a Transmission element, it is possible in a simple manner to lock the motor lock not only the locking bolt, but also other locking elements such. B. to put the locking bar of secondary locks of the motor lock in the locking position.

According to a further embodiment of the invention, the gear element can be rotated about an axis of rotation and the driver is formed by a projection protruding axially from the gear element with respect to the axis of rotation. This enables a particularly simple construction. The rotatable gear element can, for example, be a gearwheel which meshes with a further gearwheel of a gear mechanism assigned to the drive motor. The projection is preferably formed in one piece with the rotatable gear element.

A special embodiment of the invention provides that the projection has an at least essentially circular sector-shaped cross section in a sectional plane running at right angles to the axis of rotation. The surfaces that run obliquely to one another can in this case form impingement surfaces which, after a rotation of the gear element in the movement path of the control element, run essentially transversely to the direction of displacement of the control element, which is favorable in terms of force transmission.

According to a further embodiment of the invention, respective control elements are arranged on both sides of the axis of rotation, one of the control elements can be acted upon by the driver when the gear element rotates in a first direction of rotation and the other control element can be acted upon by the driver when the gear element rotates in an opposite, second direction of rotation is. Starting from a central position, either one or the other control element can be acted upon by rotating the gear element, depending on the direction of rotation.

The control elements can each be designed as flat irons with a loading attachment protruding from a flat side, in particular at the end. The loading approaches can in particular point to one another. Furthermore, the control elements can be slidably mounted in a lock housing of the motor lock.

It can be provided that the movement path of the first control element runs parallel to the movement path of the second control element at a predetermined distance and the driver located in the retracted position is arranged completely in the space between the two movement paths. By rotating the gear element into the middle position corresponding to the retracted position of the driver, a complete interruption of the operative connection between the drive motor and the control elements can be brought about.

According to a further embodiment of the invention, the first control element and the second control element are to be acted upon in the same displacement direction, one of the control elements being attached directly to a displaceable transmission element or being formed in one piece with it and the other control element being operatively connected to the transmission element via a relocating device, which causes a direction reversal with respect to the displacement directions of the relevant control element and the transmission element. Thus, both control elements can be designed to act in the same direction, the driver optionally causing the locking bolt to extend or retract, depending on which control element is acted upon.

The adjusting element is preferably a lock cylinder which can be actuated by means of a key and has a rotating locking nose. The locking lug can act on the same transmission or control element as one on the gear element arranged driver. In principle, the adjusting element can also be a lever handle.

A special embodiment of the invention provides that the motor lock comprises a basic lock body on which the actuating element and the locking bolt are mounted, and that the drive motor is attached to an additional lock body which is detachably coupled to the basic lock body. Such a motor lock can easily be converted into an exclusively manually operated lock by detaching the additional lock body from the basic lock body. Likewise, an existing manually operated lock can be converted into a motorized lock by coupling the additional lock body to the basic lock body.

Further preferred embodiments of the invention can be found in the dependent claims, the description and the accompanying drawings.

Fig. 1

ist eine Seitenansicht eines erfindungsgemäßen Motorschlosses bei entfernter Abdeckplatte.

Fig. 2

ist eine perspektivische Teildarstellung eines erfindungsgemäß ausgebildeten Motorschlosses.

Fig. 3

zeigt eine Getriebeeinrichtung des Motorschlosses aus Fig. 1 von einer gegenüber Fig. 1 entgegengesetzten Seite aus.

Fig. 4

ist eine perspektivische Ansicht der Getriebeeinrichtung aus Fig. 3.

The invention is described in more detail below on the basis of exemplary embodiments with reference to the drawings.

Fig. 1

Figure 3 is a side view of a motorized lock according to the invention with the cover plate removed.

Fig. 2

is a perspective partial representation of a motor lock designed according to the invention.

Fig. 3

shows a gear mechanism of the motor lock from Fig. 1 from one opposite Fig. 1 opposite side.

Fig. 4

FIG. 3 is a perspective view of the transmission device of FIG Fig. 3 .

This in Fig. 1 The motor lock 11 shown, designed according to an embodiment of the invention, has a basic lock housing 12 on which a handle follower 13 for a manually operated handle (not shown), a lock latch 15 and a locking bolt 17 are mounted in a basically known manner. The locking bar 17 can be switched between a locking position and a release position and is in Fig. 1 shown in the release position. A lock cylinder, not shown, is inserted into a recess 19 of the basic lock housing 12 and can be actuated by turning a key. By actuating the lock cylinder, the locking bolt 17 can be manually switched from the release position to the locking position and vice versa.

In addition to this manual changeover via the lock cylinder, a motor-driven changeover of the locking bolt 17 can also take place. For this purpose, a drive motor 20 is provided, which is accommodated in an additional lock housing 21 and is preferably designed as an electric motor. An electronic control device 25 for controlling the drive motor 20 is also accommodated in the additional lock housing 21. Furthermore, a transmission device 27 assigned to the drive motor 20 is located in the additional lock housing 21. In the embodiment shown, the additional lock housing 21 is detachably coupled to the basic lock housing 12 so that it can be removed if necessary to use the motor lock 11 as a to use manual lock. In principle, the additional lock housing 21 could also be designed to be integrated with the basic lock housing 12. For better visibility of the components of the motor lock 11, the basic lock housing 12 and the additional lock housing 21 are shown in FIG Fig. 1 each shown without the usually provided cover plate.

Fig. 2 shows the area of the recess 19 in an enlarged perspective view. The locking bolt 17 is coupled in a driving manner via a pivot lever arrangement 34 with a plate-shaped transmission element 30, which is mounted displaceably in the lock housing 12 in the direction of the double arrow 35. A change lever 36 is displaceably guided on the cover plate (not shown) and is coupled to the transmission element 30.

A retaining pin 38 is attached to a lower end area of the transmission element 30, via which a first, displaceable in the additional lock housing 21 ( Fig. 1 ) mounted control element 40 can be coupled to the transmission element 30. For better visibility, in Fig. 2 the first control element 40 is shown separated from the transmission element 30, so that there is no engagement between the retaining pin 38 and the associated receptacle 43 of the first control element 40. If, on the other hand, the retaining pin 38 is located in the receptacle 43, the locking bolt 17 can be switched between the locking position and the release position by moving the first control element 40.

A second control element 45 is arranged at a distance from the first control element 40 and is likewise mounted displaceably in the additional lock housing 21. In the embodiment shown, both the first control element 40 and the second control element 45 are designed as elongated flat irons.

The second control element 45 serves to act on a drive element 50, which is mounted displaceably on the basic lock housing 12, and a drive lever 53, which is coupled to the transmission element 30 via a control lever 55. For linearly displaceable guidance of the drive element 50, a guide projection 56 is arranged thereon, which is slidably guided in an elongated recess of the cover plate, not shown. A first end 57 of the drive element 50 protrudes into the path of movement of a locking nose of the lock cylinder, not shown, and can be acted upon by this. The drive lever 53 also protrudes with its free end into the movement path of the locking nose.

A second end 59 of the drive element 50 serves to act on a securing transmission lever 60, by means of which a securing element (not shown) can be switched from a securing position to an unlocking position. The securing element prevents the locking bar 17 from being moved into the locking position when it is in the securing position.

When, as a result of a key actuation of the lock cylinder, its locking nose rotates counterclockwise, it first acts on the first end 57 of the drive element 50 and pushes it upwards. As a result of this movement, the second end 59 of the drive element 50 acts on the safety transmission lever 60 and pivots it in such a way that the safety element is extended into its unlocked position. As a result, the transmission element 30 can move freely.

In the course of the movement of the drive element 50, a driver section 61 formed in the area of the first end 57 acts on the drive lever 53 and also moves it upwards. As a result, the transmission element 30 is moved downwards. As a result, a key actuation of the lock cylinder in an anti-clockwise direction causes the motor lock 11 to be locked.

By turning the key in the lock cylinder clockwise, the change lever 36 can be moved upwards, the transmission element 30 being raised and the motorized lock 11 being unlocked again. The lock 11 can also be unlocked by lifting the transmission element 30 using the follower 13 ( Fig. 1 ) respectively. An embodiment of the invention, not shown, provides that the actuation of the safety transmission lever 60 and the drive lever 53 is effected by a lever, knob or handle instead of a lock cylinder.

The two control elements 40, 45 can be used to switch the locking bolt 17 between the locking position and the release position by motor, as will be explained in more detail below. As in Fig. 3 and 4th As can be seen, the drive motor 20 has a drive shaft 62 by means of which a worm wheel 63 can be driven which meshes with an intermediate gear 67. The intermediate gear 67 has an outer ring gear 68 and an inner ring gear 69 which can only be seen in a rear view. While the outer ring gear 68 meshes with the worm wheel 63, the inner ring gear 69 meshes with a gear element 70 in the form of a further gear.

On a side surface 73 of the gear element 70, an axially protruding projection 75 is formed, which, as shown, has an essentially sector-shaped cross section. When the transmission element 70 as in Fig. 3 shown is in a decoupling position or middle position, the projection 75 is arranged between the two control elements 40, 45. Respective loading lugs 76, 77 of the control elements 40, 45 that point towards one another protrude into the path of movement which the projection 75 executes when the gear element 70 rotates about an axis of rotation 78.

If the transmission element 70 based on the in Fig. 3 If the middle position shown is rotated counterclockwise, the projection 75 strikes after overcoming the recognizable gap on the loading shoulder 76 of the first control element 40 and moves it upwards in the direction of the arrow 80, whereby the transmission element 30 is raised and the locking bolt 17 is in the release position is moved.

If the transmission element 70 based on the in Fig. 3 is rotated clockwise center position shown, the projection 75 strikes after overcoming the gap on the loading shoulder 77 of the second control element 45 and moves it upward in the direction of arrow 80, whereby the securing element is lowered into the unlocked position, the transmission element 30 is lowered and the locking bolt 17 is moved into the locking position. In this way it is possible to lock and unlock the motor lock 11 by appropriately controlling the drive motor 20.

When the gear element 70 is in the middle position and the projection 75 is accordingly spaced from the loading lugs 76, 77, there is no effective drive coupling between the drive motor 20 and the locking bolt 17. When the lock cylinder is actuated, the drive shaft 62 of the drive motor 20 becomes thus not rotated, which results in a smooth actuation of the lock cylinder. The control device 25 is designed to move the gear element 70 back into the middle position according to FIG Fig. 3 to provide, so that a smooth manual operation of the motor lock 11 is possible at any time.

List of reference symbols:

11th

Motor lock

12th

Basic lock housing

13th

Handle follower

15th

Lock latch

17th

Locking bolt

19th

Recess

20th

Drive motor

21

Additional lock housing

25th

electronic control device

27

Transmission device

30th

Transmission element

34

Swivel lever arrangement

35

Double arrow

36

Change lever

38

Retaining pin

40

first control

43

admission

45

second control

50

Drive element

53

Drive lever

55

Control lever

56

Leadership advantage

57

first end

59

second end

61

Driver section

60

Safety transmission lever

62

drive shaft

63

Worm gear

67

Idler gear

68

outer ring gear

69

inner ring gear

70

Gear element

75

head Start

76, 77

Charging Approach

78

Axis of rotation

80

arrow

Claims (13)

1. A motor lock (11), which can be actuated both manually and driven by a motor, comprising

   at least one locking bolt (17) which can be switched between a locked position and a release position;

   an adjustment element for a manual switching of the locking bolt (17); and

   a drive motor (20) for a motor-driven switching of the locking bolt (17),

   wherein
   a gear element (70), which can be driven by the drive motor (20), can be adjusted between at least one coupling position, in which there is a drive-effective coupling between the drive motor (20) and the locking bolt (17), and a decoupling position, in which the drive-effective coupling between the drive motor (20) and the locking bolt (17) is interrupted, wherein the motor lock (11) has a control device (25) which is configured to set the gear element (70) into the at least one coupling position for a motor-driven switching of the locking bolt (17) and to set the gear element (70) into the decoupling position for a manual switching of the locking bolt (17), and

   wherein
   the gear element (70) cooperates with the locking bolt (17) via an entrainer (75) which, on the one hand, is capable of acting on a control element (40, 45) operatively connected to the locking bolt (17) on a movement of the gear element (70) in the direction of the at least one coupling position and which, on the other hand, can be moved into a retracted position spaced apart from the control element (40, 45) by a movement of the gear element (70) in the direction of the decoupling position,

   characterized in that
   the control element (40, 45) is displaceable and the entrainer (75) present in the retracted position is arranged completely outside the movement path of the control element (40, 45).
2. A motor lock in accordance with claim 1,
   characterized in that
   the control device (25) is configured to set the gear element (70) into the decoupling position again after each motor-driven switching of the locking bolt (17).
3. A motor lock in accordance with claim 1 or claim 2,
   characterized in that
   the gear element (70) can be set into two different coupling positions, in each of which there is a drive-effective coupling between the drive motor (20) and the locking bolt (17), with the decoupling position being located between the two coupling positions.
4. A motor lock in accordance with at least one of the preceding claims,
   characterized in that
   the control device (25) is configured to adjust the gear element (70) between the at least one coupling position and the decoupling position by controlling the drive motor (20).
5. A motor lock in accordance with at least one of the preceding claims,
   characterized in that
   the locking bolt (17) can be switched by displacing a transmission element (30), with the entrainer (75) being arranged at the gear element (70) and being capable of acting directly or indirectly on the transmission element (30) on a movement of the gear element (70) in the direction of the coupling position.
6. A motor lock in accordance with at least one of the preceding claims,
   characterized in that
   the gear element (70) is rotatable about an axis of rotation (78) and the entrainer (75) is formed by a projection (75) projecting axially from the gear element (70) with respect to the axis of rotation (78).
7. A motor lock (6) in accordance with claim 6,
   characterized in that
   the projection (75) has a cross-section at least substantially in the shape of a circle sector in a sectional plane extending at a right angle to the axis of rotation (78).
8. A motor lock in accordance with claim 6 or claim 7,
   characterized in that
   respective control elements (40, 45) are arranged at both sides of the axis of rotation (78), with one of the control elements (40, 45) being able to be acted on by the entrainer (75) on a rotation of the gear element (70) in a first direction of rotation and the other control element being able to be acted on by the entrainer (75) on a rotation of the gear element (70) in an opposite second direction of rotation.
9. A motor lock in accordance with claim 8,
   characterized in that
   the movement path of the first control element (40) extends at a predetermined spacing in parallel with the movement path of the second control element (45) and the entrainer (75), which is present in the retracted position, is arranged completely in the intermediate space between the two movement paths.
10. A motor lock in accordance with claim 8 or claim 9,
    characterized in that
    the first control element (40) and the second control element (45) are to be acted on in the same displacement direction, with one (40) of the control elements being fastened directly to a displaceable transmission element (30) or being formed in one piece therewith and the other control element (45) being operatively connected to the transmission element (30) via a conversion device (53, 55) which effects a direction reversal with respect to the displacement directions of the respective control element (45) and of the transmission element (30).
11. A motor lock in accordance with at least one of the claims 8 to 10,
    characterized in that
    the first control element (40) and the second control element (45) are each designed as a flat bar having an application lug (76, 77), in particular an end-side application lug (76, 77), projecting from a flat side.
12. A motor lock in accordance with at least one of the preceding claims,
    characterized in that
    the adjustment element is a lock cylinder which can be actuated via a key and which has a rotating closing nose.
13. A motor lock in accordance with at least one of the preceding claims,
    characterized in that
    the motor lock (11) comprises a base lock body (12) at which the adjustment element and the locking bolt (17) are supported, and in that the drive motor is fastened to an auxiliary lock body (21) which is releasably coupled to the base lock body (12).

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