DK3000953T3

DK3000953T3 - KEY TURNING DEVICE

Info

Publication number: DK3000953T3
Application number: DK15186099.6T
Authority: DK
Original assignee: ABUS August Bremicker Söhne KG
Priority date: 2014-09-23
Filing date: 2015-09-21
Publication date: 2017-05-22
Also published as: DE102014113764A1; EP3000953A1; EP3000953B1

Description

The present invention relates to a key actuation apparatus for turning a key in a lock of a door or the like, comprising a base body which is configured for a direct or indirect fastening to the lock; an engagement element which is rotatable with respect to the base body and which is configured for an engagement with a key located in the lock; an electromechanical drive; and a transmission for a drive-effective coupling of the electromechanical drive to the engagement element. Such a key actuation apparatus is, for example, known from DE 10 2004 021 704 B3.

An automatic unlocking of door locks or window locks can be provided by means of such electromechanical key actuation apparatus - by pressing a button at a remote control, for example. Existing doors can also be easily retrofitted with such key actuation apparatus due to the direct mechanical effect of the engagement element on the key located in the lock. The engagement element can, for example, be a clip engaging around the head of the key.

In conventional key actuation apparatus, the operating comfort is frequently impaired by a comparatively pronounced noise formation. Endeavors are therefore made in the technical field to allow a quieter and less obtrusive operation of electrical key actuation apparatus.

This object is satisfied by a key actuation apparatus having the features of claim 1.

In accordance with the invention, the transmission is received in a transmission housing which is fastened to the base body via at least one resilient buffer device. The resilient buffer device effects a vibration decoupling between the transmission housing and the base body. A transmission of noises and mechanical vibrations from the drive and from the transmission to the base body and from it to the door leaf is thus counteracted. In conventional key actuation apparatus, the door leaf can in contrast act as a resonant body which contributes to the amplification of disturbing noises to a considerable degree. The invention thus allows a particularly effective noise damping in the operation of electromechanical key actuation apparatus.

The base body can be any desired support structure for the individual components of the apparatus and can in particular be configured in multiple parts. Specifically, the base body can comprise inwardly disposed elements such as one or more inner walls and/or outer elements such as a housing section. The base body in key actuation apparatus of the named kind is frequently configured for a direct or indirect fastening to the projecting section of a lock cylinder of the lock, for example by means of clamping. The base body can generally, however, also be configured for an attachment to another lock component such as to an escutcheon or for a fastening to the door leaf.

An embodiment of the invention provides that, apart from an indirect connection via movable input transmission elements or output transmission elements, the transmission housing is only held at the base body via the buffer device. The transmission of noises and vibrations to the base body is thus counteracted particularly effectively.

Provision can specifically be made that the buffer device is designed in the manner of a frame, a housing or a half shell and at least partly surrounds the transmission housing. This allows a stable design, on the one hand, and ensures a damping at multiple sides or at all sides of the noises and vibrations originating from the transmission housing, on the other hand. The damping effect is particularly effective when the buffer device surrounds the transmission housing in an areal manner.

The buffer device can be assembled from a plurality of individual components. However, it is preferred that the buffer device is configured in one part. A noise transmission through gaps or seams is thereby avoided.

The buffer device is preferably formed from an elastomer, in particular from rubber. Elastomers are inexpensive and available in many different variants. The material properties of the elastomer, in particular the degree of elasticity, can be selected with reference to the respective specific application requirements.

The transmission is preferably substantially completely surrounded by the transmission housing. The expression "substantially completely" here means that apart from the required mechanical connections for the inlet and for the outlet of the transmission, no free opening of the transmission housing is present. A considerable noise damping is thus achieved simply because of the closed transmission housing and it is further reinforced by the cooperation of the transmission housing with the buffer device. A further embodiment of the invention provides that the transmission housing has an inlet leadthrough for a drive element of the electromechanical drive or for an input element of the transmission and has at least one first outlet leadthrough for a first output element of the transmission which is provided for the coupling to the engagement element. The inlet leadthrough and the outlet leadthrough can in particular be designed such that the margin of the corresponding opening reaches directly up to the outer surface of the output element.

Provision can furthermore be made that the transmission housing has a second outlet leadthrough for a second output element of the transmission which is provided for the coupling to a manual actuation element of the key actuation apparatus. The first output element and the second output element of the transmission are preferably rotationally fixedly connected to one another or configured in one part. The manual actuation element can e.g. be a knob. Such a manual actuation element allows a key actuation as required even with a deactivated drive. This means that a user can turn the key manually into the open position via the manual actuation clement. The transmission housing is therefore preferably only provided with those leadthroughs which are absolutely necessary for connecting the transmission to the external components.

The first outlet leadthrough and the second outlet leadthrough can be arranged aligned with one another at opposite sides of the transmission housing. In other words, the key engagement and the manual actuation can be implemented as a through drive. The engagement element and the manual actuation element can in particular be seated on a common shaft of the transmission. This allows a particularly compact design. A further embodiment of the invention provides that the electromechanical drive is fastened to the transmission housing, with the electromechanical drive only being rigidly connected to the transmission housing, but not to the base body of the key actuation apparatus. This means that it is preferred for the electromechanical drive to be attached to the transmission housing in a freely supported manner, with the exception of the required electrical cable connections. Since there is thus no direct support connection between the electromechanical drive and the base body, the transmission of noises and vibrations from the drive to the base body is effectively counteracted. A particularly quiet operation of the associated key actuation apparatus thereby results.

The buffer device can be fastened to the base body via a plurality of holding projections which engage into associated reception openings, with the holding projections being formed at the base body and the reception openings being formed at the resilient buffer device or vice versa. Due to the cooperation of the holding projections and the reception openings, a stable fastening of the transmission housing to the base body results despite the resilient character of the buffer device.

The reception openings can be arranged at a marginal region of the buffer device to ensure a reliable support.

The holding projections can in particular be configured as holding spigots or holding domes. This allows a particularly simple design. A further embodiment of the invention provides that the buffer device has an inner surface which runs around the transmission housing and from which fixing webs project. This provides a reliable hold of the transmission housing at the buffer device.

The transmission can comprise at least one spur gear stage. Such a transmission is characterized by low manufacturing costs and a high efficiency.

In accordance with a further embodiment of the invention, the electromechanical drive comprises an electric motor having a motor housing and having a motor shaft led out of the motor housing, with the motor housing being directly fastened to the transmission housing and the motor shaft projecting into the transmission housing through an inlet leadthrough. Many commercially available electric motor variants are equipped with a planar end plate, which is optionally provided with fastening openings, or with the corresponding end-face part of a housing, said end plate being able to be used for attaching the electric motor to the transmission housing.

The engagement element can have at least one engagement slot into which a part of the key - e.g. a head section or a shaft section - can be inserted in order to connect the engagement element to the key in a drive-effective manner. The key actuation apparatus can furthermore have a radio reception device and a control device, wherein the control device is configured to control the electromechanical drive to make an opening movement in dependence on an opening command received via the radio reception device. A lock equipped with such a key actuation apparatus can easily be opened by remote control.

Further developments of the invention are also set forth in the dependent claims, in the description and in the enclosed drawings.

The invention will be described in the following by way of example with reference to the drawings.

Fig. 1 is a simplified perspective view of a key actuation apparatus to be attached to a door lock;

Fig. 2 shows a key actuation apparatus in accordance with the invention in a partly open state obliquely from the front;

Fig. 3 is an exploded representation of the key actuation apparatus in accordance with Fig. 2; and

Fig. 4 shows the arrangement in accordance with Fig. 3 obliquely from the rear.

Fig. 1 shows a part of a door leaf 11 which comprises a door handle 12 and a lock 13 with a lock cylinder 14 in a generally known manner. A key 15 can be inserted into the lock cylinder 14. A key actuation apparatus 17 whose housing-like base body 19 is configured for the fastening to the lock cylinder 14 is provided for the automatic movement of the key 15 into an open position or into a closed position. The base body 19 could, for example, be clamped to the section of the lock cylinder 14 projecting over the door leaf 11 by means of one or more screws - optionally while additionally using a separate fastening plate. The base body 19 could, however, also be fastened to an escutcheon or directly to the door leaf 11.

When the lock 15 is located in the lock cylinder 14 and the base body 19 of the key actuation apparatus 17 is fastened to the lock cylinder 14, an engagement element (not shown) which is located within the base body 19 and which e.g. is designed in the form of a clip engages around the head or handle 21 of the key 15 and thus effects a drivc-cffcctivc coupling between an electromechanical drive 22 which is likewise arranged in the base body 19 and the latching element of the lock cylinder 14. A knob 25 which is likewise drive-effectively connected to the engagement element serves to allow a manual opening or closing of the lock 13 for a user with a fitted key actuation apparatus 17. An electronic control device 24 including a radio reception device is also arranged at the base body 19.

The control device 24 is connected to the electromechanical drive 22 and controls its operation using input signals of a radio remote control 26.

The design of the key actuation apparatus 17 will be described in more detail with reference to Figs. 2 and 3. A housing surrounding the base body 19 is omitted in the Figures for clarification purposes. The electromechanical drive 22 for the key actuation apparatus 17 comprises an electric motor 27 having a motor housing 28 (Fig. 3) which is fed by an energy store 60 and whose motor shaft which is not visible forms an input element of a transmission 30. The transmission 30 here comprises one or more spur gear stages and serves for an adaptation of the speed of rotation, on the one hand, and for the provision of an offset between the axis of rotation R1 of the motor shaft and the axis of rotation R2 of the engagement element, on the other hand. Two outputs of the transmission 30 are configured as a through drive, wherein a first output element 53 (Fig. 4) is provided for the coupling to the engagement element and a second output element 54 (Figs. 2, 3) is provided for the coupling to the knob 25 (Fig. 1). The two output elements 53, 54 are sections of a common drive shaft here. The individual components of the transmission 30 are received in a transmission housing 33 of metal which is completely closed apart from a first outlet leadthrough 51 (Fig. 4) for the first output element 53; a second outlet leadthrough 52 (Figs. 2 and 3) for the second output element 54; and an inlet leadthrough, which is not visible in Figs. 2-4, for the motor shaft of the electric motor 27.

The transmission housing 33 is accommodated in a buffer device 35 of half shell form and comprising an elastomer. Four holding domes 40 extending in parallel with the axis of rotation R1 of the motor shaft extend from the base body 19 and engage into associated reception openings 37 (Fig. 4) of the buffer device 35 in the fitted state of the key actuation apparatus 17. As shown, the reception openings 37 are arranged in comer regions of the buffer device 35. The fastening of the buffer device 35 to the base body 19 preferably only takes place via the holding domes 40. The electric motor 27 is flanged to the transmission housing 33 by means of its motor housing 28 in a freely supported manner, with the exception of the required electrical cable connections, and does not have any mechanical support connection to the base body 19. A radial inner surface 41 of the buffer device 35 is provided with elongate fixing webs 43 to ensure a reliable hold of the transmission housing 33 in the buffer device 35 of half shell form. The buffer device 35 additionally has a cutout 57 to lead through the second output element 54.

The components of the transmission 30 are thus largely surrounded by the transmission housing 33, on the one hand, and by the resilient buffer device 35, on the other hand. Only the absolutely necessary inlets and outlets of the transmission 30 are designed as leadthroughs. A particularly quiet and low-vibration operation of the key actuation apparatus 17 is thus possible overall.

Reference numeral list 11 door leaf 12 doorhandle 13 lock 14 lock cylinder 15 key 17 key actuation apparatus 19 base body 21 head 22 electromechanical drive 24 control device 25 knob 26 radio remote control 27 electric motor 28 motor housing 30 transmission 33 transmission housing 35 buffer device 37 reception opening 40 holding dome 41 radial inner surface 43 fixing web 51 first outlet leadthrough 52 second outlet leadthrough 53 first output element 54 second output element 57 cut-out 60 energy store R1 axis of rotation of the electric motor R2 axis of rotation of the engagement element

Claims

A key actuator (17) for turning a key (15) in a lock (13) on a door or the like, with a base body (19) designed for direct or indirect attachment to the lock (13) rotatable engaging element rotatable to the base body (19), which is designed to engage a key (15) in the lock (13), an electromechanical drive (22) and a gear (30) for coupling the electromechanical drive (22) with the engaging element, characterized in that the gear (30) is located in a gear box (33) which is attached to the base body (19) via at least one elastic buffer means (35).

Key activation device according to claim 1, characterized in that the gearbox (33), except for an indirect connection via movable gear input elements or gear output elements, is held exclusively on the base body (19) by the buffer means (35).

A key actuator according to claim 1 or 2, characterized in that the buffer means (35) is formed as a frame, housing or half bowl and encloses the gearbox (33) at least partially.

Key activation device according to one of the preceding claims, characterized in that the buffer means (35) is made of an elastomer, in particular of rubber.

Key activation device according to one of the preceding claims, characterized in that the gear (30) is substantially completely enclosed by the gearbox (33).

Key activation device according to one of the preceding claims, characterized in that the gearbox (33) has an input feed to a drive element from the electromechanical drive device (22) or an input element from the gear (30) and at least a first output feed (51) to a first output element (53) of the gear (30) intended for coupling with the engagement element.

Key activation device according to claim 6, characterized in that the gearbox (33) has a second output (52) for a second output element (54) from the gear (30), which is intended for coupling a hand control element (25) to the key activation device (17). ).

A key actuator according to claim 7, characterized in that the first output feed (51) and the second output feed (52) align with each other, being located on opposite sides of the gearbox (33).

Key actuator according to one of the preceding claims, characterized in that the electromechanical drive device (22) is fixed to the gearbox (33), the electromechanical drive device (22) being exclusively fixed to the gearbox (33) but not to the key actuator (17) basic body (19).

Key actuating device (19) according to one of the preceding claims, characterized in that the buffer means (35) is fixed to the base body (19) by means of a plurality of retaining projections (40) engaging in associated entrance openings (37), the retaining projections ( 40) is provided on the base body (19) and the inlet openings (37) on the elastic buffer device (35) or vice versa.

Key activation device according to claim 10, characterized in that the input openings (37) are located in a peripheral region of the buffer means (35).

Key actuator according to claim 10 or 11, characterized in that the retaining projections (40) are designed as holding pins or retaining pins.

Key actuator according to one of the preceding claims, characterized in that the buffer means (35) has an inner surface (41) extending around the gearbox (33), from which there are intermediate walls (43).

Key activation device according to one of the preceding claims, characterized in that the gear (30) comprises at least one gear stage.

Key activation device according to one of the preceding claims, characterized in that the electromechanical drive device (22) contains an electric motor (27) with a motor housing (28) and a motor shaft which is led out of the motor housing (28), the motor housing (28). ) is secured directly to the gearbox (33) and the motor shaft extends into the gearbox (33) through an input guide.