Key for an electromechanical locking device

Abstract

The invention relates to a key (1) for an electromechanical locking device (101), wherein a length axis (90), a width axis (92) and a thickness axis (91) are defined, in each case perpendicular to one another, with a key grip (2) and with a key shank (50), which projects from the key grip (2) along the length axis (90), for insertion into the locking device (101), wherein the key grip (2) comprises an electrical energy accumulator (85) and / or electronics (70), wherein the key grip (2) comprises a frame (30) in which the energy accumulator (85) and / or the electronics (70) are or is received, wherein the frame (30) is rigidly connected to the key shank (50), and wherein the frame (30) comprises at least one gripping region (40), which forms a surface of the key grip (2) intended to be grasped by a user.

Description

[0001] The invention relates to a key for an electromechanical locking device. Furthermore, the invention provides an assembly method for assembling the key.

[0002] EP 1 899 924 B1 discloses a known key for an electromechanical locking device. The known key comprises a key blade on which electronics are arranged between two housing shells. A key shaft extends from the key blade for insertion into a locking device. An electrical contact is located on the key shaft.

[0003] DE 198 49 397 A1, GB 2 319 803 A, and US 2013 / 0283868 A1 disclose vehicle keys, wherein the vehicle keys comprise a key shaft to which a fork-shaped element is attached, which receives the bow. WO 2013 / 067738 A1 discloses a key with a key shaft and a bow molded thereon, in which a control circuit board is arranged. EP 1 327 734 A1 discloses a key in which the bow is formed by a closed housing in which a circuit board is arranged.

[0004] The object of the present invention is to provide a key for an electromechanical locking device which has sufficient strength to transmit torque to the locking device, is easy to install and / or ensures comfortable and safe use.

[0005] The object is achieved by the features of claim 1. Advantageous developments of the key are specified in the dependent device claims, the description and the figures. Furthermore, the invention is also achieved by the features of the method claim according to independent claim 13. Advantageous developments of the method are specified in the dependent method claims, the description and the figures. Features and details described in connection with the key according to the invention also apply in connection with the method according to the invention and vice versa. In particular, a key is protected which is or can be produced by the method according to the invention, as is a method for producing the key according to the invention, as specified in the claims, the description and the figures.

[0006] The invention shows a key for an electromechanical locking device.

[0007] The electromechanical locking device is preferably a locking cylinder, in particular a double or half cylinder, a furniture cylinder, a padlock, or a similar device into which the key can be inserted. In particular, the key and the locking device are designed such that, by turning the key, a torque can be transmitted to the locking device to move a driver, in particular a locking lug. By rotating the driver, a locking element, in particular a building door or cabinet door, can be unlocked or locked. In particular, the locking device comprises a corresponding electronic device arranged in the locking device, which selectively blocks and releases rotation of the key in the locking device depending on an electrical signal transmitted by the key.Alternatively, the signal transmitted by the key can enable a mechanical coupling between a cylinder core and the driver. The electronic device preferably comprises a circuit board.

[0008] The key has a key blade. A key shaft preferably extends from this key blade. This key shaft is designed for insertion into the locking device and, in particular, for transmitting torque to the locking device.

[0009] To further define the invention, the following imaginary axes and sides are preferably defined: The key has a longitudinal axis. The longitudinal axis extends in particular along the key shank. Accordingly, the key is inserted into and removed from the locking device along the longitudinal axis. Furthermore, the key has a width axis and a thickness axis. The longitudinal axis, the width axis, and the thickness axis are each perpendicular to each other.

[0010] Preferably, two broad sides are defined on the key. The two broad sides are preferably opposite each other. The two broad sides are each intersected by the thickness axis. Particularly preferably, an end face is located on at least one of the two broad sides. The end face is in particular flat. Particularly preferably, an end face is located on each of the broad sides. One, preferably both, end face(s) is preferably perpendicular to the thickness axis.

[0011] Furthermore, the key bow preferably has two opposite narrow sides. The narrow sides are preferably perpendicular to the broad sides. Preferably, each narrow side is intersected by the width axis. The narrow sides are preferably each smaller than the broad sides.

[0012] Furthermore, it is preferably provided that the key shank extends from a front side of the key bow along the longitudinal axis. This front side is opposite a rear side of the key bow. In the The rear area preferably has a key ring opening for attaching the key to a key ring. The front and rear sides are preferably cut along the longitudinal axis.

[0013] The key blade preferably comprises an electrical energy storage device and / or electronics. The energy storage device is designed, in particular, to power the electronics in the key. Additionally or alternatively, the energy storage device can be used to power the locking device as long as the key is inserted into the locking device. The electronics preferably comprise a lighting device, which will be described in more detail below.

[0014] Furthermore, it is preferably provided that the electronics comprise a wireless communication module for wirelessly transmitting and / or receiving signals. This wireless communication module allows the key to communicate with a device. In particular, this is a wireless communication module designed for short-range communication, for example, via Bluetooth or Ultra Wideband.

[0015] The device is typically a mobile device, such as a smartphone, tablet, or laptop. It can also be a stationary device, such as a terminal used for door and / or building control.

[0016] Furthermore, the electronics are preferably designed to communicate with the locking device. As will be described in more detail below, the key preferably has at least one transmission element for this purpose. The transmission element communicatively connects the key-side electronics with an electronic device on the locking device, as long as the key is inserted into the locking device.

[0017] The transmission element can be used to send electronic data that allows a user's authorization to unlock to be determined. For example, the transmission element can send an authorization code and / or an authorization time window, which is verified by the electronic device. Alternatively, the electronic device can receive an opening command.

[0018] Communication can, for example, be contact-based.

[0019] This allows the device to communicate with the locking device via the key, provided the key is inserted into the locking device. Communication can occur directly, with the key immediately forwarding the information from the sender, i.e., the device or locking device, to the receiver, i.e., the locking device or device. Furthermore, indirect, delayed communication is possible, in which the key stores the information and forwards it at a later time.

[0020] The transmission element serves additionally or alternatively to transmit electrical energy to the locking device. The electrical energy can be used to enable unlocking, to turn the key or to engage the driver, and / or can be provided for the electronic device.

[0021] Furthermore, according to the invention, the key blade comprises a frame. The energy storage device and / or the electronics are located within this frame. The energy storage device and / or the electronics are thus housed within the frame. A housing is used for this purpose, which will be described in more detail below.

[0022] The frame is made in particular of metal or plastic, in particular fiber-reinforced plastic.

[0023] The frame preferably extends around the thickness axis or an axis parallel to the thickness axis. The frame is preferably a closed ring; the ring shape does not restrict the geometric shape of the frame. The frame can, in particular, be rectangular or oval.

[0024] The frame encloses a free space inside the frame—when viewed without the electronics, energy storage, and housing. According to the invention, the free space is open on both sides, in particular completely open. The electronics and / or energy storage, in particular with the housing, are arranged in this free space. Once the housing is mounted in the frame, the free space in the frame is filled by the housing.

[0025] Furthermore, the invention provides that the key shank is rigidly connected to the frame. In particular, the frame is composed of a first frame part and a second frame part. The key shank is preferably rigidly mounted on the first frame part.

[0026] This rigid arrangement means, in particular, that the key shaft is immobile relative to the frame. Therefore, it is preferably provided that the key shaft cannot be folded relative to the frame or removed from the frame. This allows for a relatively stable torque transmission from the frame to the key shaft and thus to the locking device.

[0027] Furthermore, the invention provides that the frame comprises at least one gripping area, which forms a surface of the key blade for a user to grasp. This allows the user to grasp the frame directly—not just the housing—and thus transfer the required torque directly to the frame. In particular, the entire gripping area has a surface of the key blade for a user to grasp.

[0028] Due to the combination according to the invention through the rigid connection of the handle area of the frame to the key shaft, the torque transmission from the key to the locking device, in particular a cylinder core of the locking device, can have sufficient strength so that operation is safe and comfortable for the user.

[0029] The term "surface" refers in particular to an area of the frame that is exposed and can therefore be touched by the user's fingers or hand.

[0030] In particular, the frame has at least two opposing gripping areas, each spaced apart from the longitudinal axis, so that the torque can be transmitted with a corresponding lever. Particularly preferably, the key blade can be gripped such that the key blade is located between two of the user's fingers, with the two fingers each resting on one of the two opposing gripping areas.

[0031] Particularly preferably, the frame is formed circumferentially on the surface of the key bow. The frame is preferably completely circumferential, i.e., has a closed ring shape, and is located along the entire circumference on the surface of the key bow.

[0032] Preferably, when viewed along the width axis (i.e., when viewed from the narrow side), the at least one gripping area extends over the entire length of the key bow, defined parallel to the longitudinal axis. Thus, the gripping area preferably extends from the front to the back of the key bow.

[0033] Preferably, only the surface that is spaced from the longitudinal axis is considered the gripping area of the frame, so that torque can be transmitted across the entire gripping area. Thus, the gripping area can be designed at a distance from the longitudinal axis.

[0034] Particularly preferably, the at least one gripping area is a section of the frame which itself or whose tangent runs parallel or not at 90° to the longitudinal axis.

[0035] Particularly preferably, the at least one gripping area comprises the furthest point of the key from the longitudinal axis.

[0036] Furthermore, it is preferably provided that the at least one grip region does not intersect the longitudinal axis.

[0037] As described, the frame is preferably provided with opposing gripping areas. Both gripping areas preferably intersect in the same plane perpendicular to the thickness axis.

[0038] Furthermore, it is preferably provided that the frame is substantially rectangular or oval. In the rectangular shape, parallel sides of the rectangular shape are preferably parallel and spaced from the longitudinal axis. These two sides form the two opposite gripping areas.

[0039] Furthermore, it is preferably provided that the frame has a frame thickness of at least 3 mm, in particular at least 5 mm, parallel to the thickness axis. This provides a sufficient surface area that can be touched, in particular grasped, by the user.

[0040] As described, the frame is preferably composed of a first frame part and a second frame part. This allows the electronics and / or energy storage device, in particular including the housing, to be easily inserted into the frame. The first and second frame parts are designed separately from each other, at least during key assembly.

[0041] Preferably, the first and second frame parts are connected in a force-fitting and / or form-fitting and / or material-fitting manner at at least one connection point. Preferably, the first and second frame parts are connected to one another in a force-fitting and / or form-fitting manner, so that even in the assembled key, the first and second frame parts are formed separately from one another.

[0042] In particular, at least two opposing connection points are provided. Particularly preferably, at each connection point there is at least one locking lug that engages with a corresponding locking counterpart.

[0043] The at least one connection point, preferably the at least two connection points, is / are preferably spaced apart from the longitudinal axis. In particular, there is one connection point in each handle area.

[0044] Furthermore, it is preferably provided that the at least one connection point, in particular the two connection points, is / are located in the front half of the key blade facing the key shaft.

[0045] According to the invention, the key shank comprises a key shank base body. The frame, in particular the first frame part, is preferably connected in one piece to the key shank base body.

[0046] According to the invention, the frame, in particular the first frame part, is manufactured monolithically with the key shank base body. This monolithic manufacturing means, in particular, that the frame, in particular the first frame part, and the key shank base body are molded together; for example, cast from metal or injection-molded from plastic.

[0047] The key shank body preferably extends over at least half the length of the key shank; particularly preferably over the entire length of the key shank. This ensures that a significant portion of the key shank body can be inserted into the locking device and that the torque can be transmitted securely. The length of the key shank is defined as coaxial or parallel to the longitudinal axis.

[0048] Preferably, the first frame part and the key shank base body are jointly fork-shaped. This describes in particular that the first frame part comprises a front section from which two parallel front legs extend. The front section is preferably perpendicular to the longitudinal axis, either by itself or with a tangent. The two front legs are in particular spaced from the longitudinal axis. In particular, the two front legs each form a part of the two opposite gripping areas. Preferably, the key shank base body extends centrally between the two front legs from the front section of the first frame part. The key shank base body extends in one direction and the two front legs in the opposite direction.

[0049] As already mentioned, the key head comprises a housing. The housing preferably comprises a first housing part and a second housing part.

[0050] The housing can be made of plastic.

[0051] The housing is surrounded by the frame. The housing is thus arranged within the frame. According to the invention, the housing is received within the frame and thus secured within the frame. Particularly preferably, the frame completely encloses the housing—possibly with the exception of any opening for a key ring, which may be formed between the housing and the frame.

[0052] The housing houses the electronics and / or the energy storage device. In particular, the housing encloses the electronics and / or the

[0053] Energy storage is sealed. The receiving space for the electronics and / or the energy storage device is formed, in particular, between the first and second housing parts.

[0054] According to the invention, the housing forms a surface of the key blade on each of the two opposite broad sides - i.e. a surface that can be touched by the user.

[0055] It is preferably provided that the housing projects beyond the frame along the thickness axis at least on one side, preferably on both sides.

[0056] It is preferably provided that the frame projects beyond the housing along the longitudinal axis and / or along the width axis.

[0057] The frame, in particular each frame part, preferably comprises at least one rail. The respective rail is particularly designed to arrange the first housing part and the second housing part relative to one another.

[0058] In particular, the frame contains at least two rails. The rails can be arranged parallel to each other.

[0059] Each housing section can have a corresponding rail mount. By sliding the frame-side rails and the housing-side rail mounts into each other, the two housing sections can be arranged and secured relative to each other and relative to the frame.

[0060] The rail mount can be designed as a groove, and the rail as a complementary extension (also called a protrusion) that fits into the groove. Similarly, in the reverse design, the rail can be designed as a groove, and the rail mount as a complementary extension (also called a protrusion) that fits into the groove.

[0061] Particularly preferably, a seal is arranged between the two housing parts. In particular, the at least one rail or rails in the frame are designed to press the two housing parts together, thereby compressing the seal.

[0062] Furthermore, it is preferably provided that the first housing part on the first broad side and the second housing part on the opposite second broad side at least partially form a surface of the key blade.

[0063] Preferably, the key shaft comprises at least one transmission element for transmitting electrical energy (also: current) and / or electronic data to the locking device. This at least one transmission element is, for example, a sheet metal part, a wire, or a printed circuit board.

[0064] Particularly preferably, at least two of the transmission elements are provided, wherein the transmission elements are arranged symmetrically to allow the key to be used as a reversible key. Furthermore, the geometry of the key shaft is preferably selected so that the key can be used as a reversible key. In particular, for reversible key use, the key shaft is designed symmetrically with respect to a plane in which the longitudinal axis lies.

[0065] The at least one transmission element preferably extends from the electronics into the key shaft.

[0066] The transmission element preferably has a printed circuit board contact surface inside the key blade. At this contact surface, the transmission element can be electrically connected to a printed circuit board of the electronics.

[0067] In the area of the key shaft, the transmission element preferably has a locking device contact surface which is exposed and - when the key is inserted into the locking device - can be electrically connected to the electronic device on the locking device side.

[0068] The key shank preferably includes an insert element. This insert element is preferably made of plastic.

[0069] The insert element is preferably arranged on at least one of the two housing parts, preferably on both housing parts. For example, one of the two housing parts has a receiving groove into which the insert can be inserted. This receiving groove is covered by the other housing part, so that the insert element is arranged, in particular clamped, between the two housing parts.

[0070] Preferably, the insert element is fastened to the key shank base body, in particular by force and / or form-fitting. Particularly preferably, a tongue and groove connection is provided between the insert element and the key shank base body.

[0071] Particularly preferably, the key shank base body has parallel, spaced-apart shank legs. The insert element can be inserted between the shank legs. In particular, the insert element is connected to at least one of the shank legs via the tongue and groove connection. At the front end of the key shank, the shanks can be connected to each other via a shank leg connection. The insert element does not have to extend to the front end of the key shank base body.

[0072] In the frame, in particular in the front section of the first frame part, there is preferably an insert element through-opening through which the insert element can be inserted into the key shaft from the inside of the frame to the outside.

[0073] The insert element preferably comprises the at least one transmission element. In particular, the at least one transmission element is embedded in the insert element.

[0074] The key preferably comprises a socket, in particular designed as a USB-C connector. The socket is designed for charging the energy storage device and / or for connecting the electronics to the cable. Particularly preferably, the electronics comprises a circuit board on which the socket is arranged.

[0075] The frame, in particular the second frame part, preferably has a frame socket opening. The socket for a corresponding plug is accessible through this frame socket opening.

[0076] The socket itself does not need to extend into the frame socket opening. Rather, it is preferred that the socket does not extend into the frame socket opening, but is merely arranged in the housing.

[0077] Preferably, one of the two housing parts has a surrounding housing socket opening for the socket. This surrounding housing socket opening is preferably completely closed, so that the socket is completely enclosed by only one of the two housing parts. This simplifies the sealing of the two housing parts, or the sealing towards the socket.

[0078] As mentioned, the key may comprise a key ring opening for attaching the key to a key ring, in particular for receiving a key ring. This key ring opening is located in particular between the frame and the housing, preferably on the rear side of the key bow.

[0079] Preferably, the rear side and / or the area of the frame that abuts the key ring opening separates the gripping areas from each other. The rear side and / or the area of the frame that abuts the key ring opening are preferably defined outside the gripping area.

[0080] Preferably, the key has a button on or in the key blade. Particularly preferably, the key blade comprises only a single button. The button is preferably located on the circuit board and thus inside the described housing. In particular, only a single button is provided, so that the user does not have the choice between multiple buttons, but can only press this one button.

[0081] To actuate the button, the housing preferably has an actuating portion. This actuating portion can be pressed by the user. In particular, the user presses the actuating portion on one broad side and supports the key blade with an opposing finger or hand on the opposite broad side.

[0082] In addition to the actuating portion, the housing preferably includes a support portion. In particular, any area of the housing that is not the actuating portion—i.e., that cannot be flexibly pressed against the button by the user—is the "support portion" of the housing.

[0083] Furthermore, it is preferably provided that the button can be actuated by pressing the first and second housing parts against each other. In particular, the two opposite broad sides of the key blade are pressed against each other.

[0084] Preferably, the actuating section and the supporting section are formed integrally with one another. Particularly preferably, this involves a monolithic design of the actuating section and the supporting section, preferably as an injection-molded part, particularly preferably as a single-component injection-molded part. Particularly preferably, the first housing part comprises the actuating section, which is surrounded by the supporting section. For this purpose, the first housing part is, in particular, monolithic.

[0085] As already described, the housing preferably forms an end surface, in particular a flat end surface, of the key blade on at least one broad side. The actuating portion preferably lies in this end surface. Part of the end surface can also be formed by the support portion. The end surface is preferably surrounded, in particular completely surrounded, by an edge portion of the first housing part. This edge portion, in particular, has the described rail receptacle, which represents the connection to the frame.

[0086] Preferably, the actuating section comprises at least 20%, preferably at least 25%, particularly preferably at least 30%, of the width of the broad side. This is the broad side on which the actuating section is arranged, i.e., the broad side that can be pressed in to press the button.

[0087] Additionally or alternatively, it is preferably provided that the actuating section comprises at least 30%, preferably at least 40%, particularly preferably at least 50%, of the extent of the described end surface.

[0088] The term "extension" refers in particular to the projected area perpendicular to the thickness axis, whereby either the area of the entire key blade or the area of the end face is decisive.

[0089] It is preferably provided that the actuating section merges into the support section within the described end surface.

[0090] Particularly preferably, the actuating section and the support section, particularly in the region of the end face, differ at least partially in an inwardly located wall thickness of the housing. The transition from one wall thickness to the other can occur abruptly at a step, or the wall thickness can change continuously or in several steps.

[0091] The transition from one wall thickness to another does not necessarily have to be at the transition between the actuating section and the support section. What's important is that the changing wall thickness allows for a flexible housing design so that the actuating section can be easily pushed inward toward the button.

[0092] The change in wall thickness is particularly "internal", so that a flat end surface is created on the outer surface of the key bow and the difference in wall thickness is not visible.

[0093] Furthermore, it is preferably provided that the support section, in particular a one-piece one, forms the housing on the narrow side of the key blade. Thus, when viewing the key along the longitudinal axis or along the width axis (i.e., when viewing the front, back, or narrow side), the frame section, and thus at least part of the support section of the housing, is visible—partially concealed by the surrounding frame.

[0094] The housing preferably has a support column to limit the travel of the actuating section when actuating the button. This support column prevents the actuating section from being pressed too hard against the button. The support column is formed, in particular, by a first support column part and a separately formed second support column part. These two support column parts meet when the actuating section is pressed.

[0095] In particular, the first support column part is located on the first housing part and the second support column part is located on the second housing part.

[0096] Preferably, the actuating section is formed in one piece, in particular monolithically, with one of the support column parts.

[0097] The circuit board preferably has a column recess. This can be a hole or a groove. The support column, for example, at least one of the two support column parts, protrudes through this column recess. This allows the support column to be positioned relatively close to the button to be protected.

[0098] In particular, the electronics of the key are designed to initiate communication with the device, e.g., a smartphone, when the button is pressed. In particular, the electronics send a corresponding signal via the wireless communication module after the button is pressed to establish communication with the device.

[0099] Furthermore, it is preferably provided that the electronics are designed such that inserting and / or removing the key shaft into / from the locking device causes the electronics to take an action, for example to wake up the electronics and / or to establish communication with the device.

[0100] Furthermore, it is preferably provided that the key blade of the key comprises a lighting device.

[0101] Preferably, the electronics for controlling the lighting device are designed to illuminate at least one piece of information. This information can, for example, be the status of the key. Furthermore, the information can relate to the locking device, provided the key is inserted into the locking device. Furthermore, the information can, for example, relate to the wireless communication connection between the key and the device, e.g., a smartphone.

[0102] The lighting device in the key blade is particularly designed to illuminate in at least two colors. Particularly preferably, the lighting device comprises at least one lighting element. This lighting element is preferably a single LED. The individual lighting element is particularly designed to emit at least two, preferably at least three, particularly preferably at least four, colors. For example, the lighting element is an RGB LED. This LED can generally illuminate in red, green, or blue and mix the colors so that, for example, white light can also be generated.

[0103] It is preferably provided that the electronics are designed to display different information by means of different patterns by controlling the lighting device.

[0104] Each "pattern" is characterized by its color, blinking pattern, and / or light intensity. Two different patterns thus differ in color, blinking pattern, and / or light intensity.

[0105] It is preferably provided that the electronics are designed to display different information about the key by means of different patterns by controlling the lighting device.

[0106] Furthermore, it is preferably provided that the electronics are designed to display different information about the locking device by means of different patterns by controlling the lighting device.

[0107] As described, the key is configured, in particular via the wireless communication module of the electronics, for a wireless communication connection to the device. The electronics are preferably configured to indicate a search for a communication connection and / or an existing communication connection by the lighting device, in particular the lighting element, by controlling the lighting device. This "search for a communication connection" or the "existence of a communication connection" constitutes the "information" displayed via the lighting device.

[0108] As described, the key can comprise an electrical energy storage device. The electronics are preferably designed to display a charge level of the energy storage device as information by controlling the lighting device, in particular by the lighting element.

[0109] The key preferably has an interface, for example the described socket, for charging the energy storage device. The electronics are preferably designed to display a charging process and / or a termination of the charging process by the lighting device, in particular the lighting element, as information by controlling the lighting device. Particularly preferably, the display is limited to the time during which the interface is connected to a power source.

[0110] Furthermore, it is preferably provided that the electronics are configured to display at least one of the following errors as information by the lighting device, in particular the lighting element, by controlling the lighting device. The error may be a faulty locking device. For example, the key can emit a corresponding signal via the lighting device, prompting the user to check the specific error on the device (e.g., smartphone).

[0111] Similarly, a faulty key and / or disrupted communication with the device may be indicated.

[0112] Furthermore, it is preferably provided that the electronics are configured to control the lighting device, in particular the lighting element, after a triggering event to illuminate the at least one piece of information. The triggering event can be at least one of the following events: pressing the described button of the key; and / or inserting the key into the locking device; and / or removing the key from the locking device; and / or connecting the interface to the power source.

[0113] Furthermore, it is preferably provided that the electronics are configured to display different patterns—i.e., different colors and / or different flashing patterns and / or different light intensities—sequentially triggered by one, in particular a single, triggering event by controlling the lighting device. In particular, the different patterns can display different information about the key and / or the locking device.

[0114] Furthermore, it is preferably provided that the electronics are designed to control the lighting device to display a charge state of the energy storage device after the key has been inserted into the locking device, wherein in particular the display of the charge state is one of several items of information that are displayed after the key has been inserted.

[0115] Furthermore, it is preferably provided that the key is configurable such that at least some of the information that can be displayed by the lighting device is not displayed by the lighting device, in particular permanently. The configuration can be stored in the electronics. This makes it possible, for example, to deactivate certain information or its display for certain users or certain application purposes in order to save energy and avoid overwhelming the user.

[0116] Preferably, the housing of the key includes at least one light guide. Such a light guide is made, for example, of a suitable plastic or glass and guides the light, for example, from the LED on the circuit board, outward so that it is visible to the user.

[0117] It is preferably provided that the lighting device, preferably the lighting element, shines through the light guide towards the broad side of the key.

[0118] Furthermore, it is preferably provided that the lighting device, preferably the lighting element, shines through the light guide across the frame in the direction of the key shaft.

[0119] It can be provided that the at least one light guide projects beyond the frame when viewed perpendicular to the thickness axis.

[0120] If several light guides are present, one of the light guides can protrude beyond the frame on opposite sides of the key bow, when viewed perpendicular to the thickness axis.

[0121] Furthermore, it is preferably provided that the lighting device, in particular the lighting element, is arranged within the described free space enclosed by the frame; in particular, the lighting device is located on the circuit board of the key.

[0122] The light guide is preferably located at least partially in the described actuating section, which is designed to be flexible so that it can be pressed in to actuate the button of the key.

[0123] Particularly preferably, the optical fiber described above is a first optical fiber, and a second optical fiber is additionally provided. The two optical fibers can also be combined in one component, ultimately resulting in a first optical fiber section and a second optical fiber section. The first optical fiber is arranged for emission on the first broad side of the housing. The second optical fiber is arranged for emission on the second broad side of the housing.

[0124] In particular, it is provided that light can be emitted, in particular synchronously, from the lighting device through the first and second light guides. For this purpose, the lighting device can have one lighting element that feeds into both light guides. Alternatively, the lighting device can have two synchronously controlled lighting elements (e.g., two LEDs), with one lighting element feeding into each of the two light guides.

[0125] Furthermore, it is preferably provided that the electronics are configured to control the lighting device to display contradictory information about mutually exclusive states using different patterns, wherein the patterns differ, in particular, in their flashing pattern and / or color. Such mutually exclusive states are, for example, "communication connection active" and "communication connection inactive."

[0126] In particular, the patterns for the two contradictory information are designed to differ in both blinking pattern and color. This allows color-blind people to recognize these two mutually exclusive states based solely on the blinking pattern.

[0127] Furthermore, it is preferably provided that the light intensity of the lighting device can be varied by the electronics depending on the time of day and / or the ambient lighting.

[0128] An arrangement comprises the described key and the described electromechanical locking device. The locking device is preferably designed to be arranged on a building door.

[0129] The key is particularly designed so that its key shaft can be inserted into the locking device and transmit torque to the locking device. Furthermore, it is preferably provided that the at least one transmission element is designed for power and / or data transmission to the locking device.

[0130] Furthermore, the arrangement may comprise the described device, wherein the wireless communication module of the electronics of the key is designed to exchange data with the device.

[0131] The invention further comprises an assembly method according to independent claim 13, which is used in the production of a key, in particular the key described above. The assembly comprises at least the following steps: a) First, the electronics and / or the electronic energy storage device of the key are enclosed by the housing. In particular, the electronics and / or the energy storage device are arranged between the first housing part and the second housing part. b) The housing, in particular the closed housing, is then attached to the frame. As already described, the frame has at least one gripping area that forms a surface of the key blade for grasping by a user.

[0132] Preferably, in step b), the housing is arranged on the first frame part, in particular inserted. Furthermore, the housing is arranged on the second frame part, in particular inserted. In this case, the two frame parts are also fastened to one another.

[0133] It is particularly preferred that when the housing is fastened to the frame, in particular to the first frame part, the insert element of the key shaft is already located on the housing and is inserted into the key shaft base body.

[0134] The invention will now be described in more detail using an exemplary embodiment. In the following: Fig. 1 is a schematic view of an arrangement according to the invention with a locking device, device and key according to the invention according to an embodiment, Fig. 2 is an exploded view of the key according to the invention according to the embodiment, Fig. 3 is a view of a narrow side of the key according to the invention according to the embodiment, Fig. 4 is a view of a broad side of the key according to the invention according to the embodiment, Fig. 5 is the Figure 1 marked section AA, Figure 6 in Figure 1 marked section BB, Figure 7 in Figure 1marked section CC, Figure 8 shows a detail of the key according to the invention according to the exemplary embodiment, Figure 9 shows electronics and a lighting device of the key according to the invention according to the exemplary embodiment, Figure 10 shows a state during assembly of the key according to the invention according to the exemplary embodiment, Figure 11 shows an assembly method according to the invention, and Figure 12 shows different light patterns for the key according to the invention according to the exemplary embodiment.

[0135] In the following, the Figures 1 to 10 The structure of a key 1 according to an embodiment is explained in detail. Unless otherwise stated, reference is always made to all figures.

[0136] Fig. 1shows the key 1 according to the invention in an isometric view together with a locking device 101 and a device 103. The key 1 with the locking device 101 forms an arrangement 100 according to the invention. This arrangement 100 can also include the device 103. In addition, a key ring 102 can be arranged on the key 1.

[0137] The locking device 101 is a locking cylinder with a corresponding electronic device, as explained in the general part of the description. The device 103 is a mobile device or a stationary terminal, also as defined in the general part of the description.

[0138] The key 1 comprises a key blade 2 and a key shank 50. The key shank 50 is used to insert into the locking device 101. If electronic access authorization is present, the key 1 can rotate a cylinder core 104. If, however, no electronic access authorization is present, the cylinder core 104 cannot be rotated in a locking device housing 106. In this case, a locking element (not shown) of the locking device 101 is prevented from leaving a connecting position between the cylinder core 104 and the locking device housing 106 by an electromechanical actuator (not shown) of the locking device 101. Thus, the key 1 cannot be rotated in the locking device 101. Thus, rotation of the key 1 in the locking device 101 is blocked.

[0139] If electronic access authorization is present, a driver 105, designed as a locking lug, can be rotated using the cylinder core 104. For this purpose, the electromechanical actuator is operated, which allows the locking element to be retracted from the connecting position. A building door can be unlocked using the driver 105.

[0140] The key blade 2 is formed by a housing 10 and a frame 30. The frame 30 forms a free space 44 that is open on both sides (see Fig. 10 ) for arranging the housing 10. Once the housing 10 is mounted in the frame, the free space 44 in the frame 30 is filled by the housing 10. The housing 10 is surrounded by the frame 30 in a plan view.

[0141] In the key blade 2, inside the housing 10 and thus surrounded by the frame 30, there is an electronics unit 70 of the key 1. The electronics unit 70 has the circuit board 71, which is described in detail in Figure 9 is shown.

[0142] Furthermore, Figure 9 That is, an energy storage device 85 for supplying power to the electronics 70 and / or the locking device 101, in particular an electronic device and / or the actuator of the locking device 101, is arranged inside the key blade 2. This energy storage device 85 can be charged via a socket 74. The housing 10 surrounds the energy storage device 85. It is also conceivable to transmit data via the socket 74. A cable connection to the electronics 70 can be established via the socket 74.

[0143] The frame 30 of the key bow 2 is formed by a first frame part 31 and a second frame part 32.

[0144] The first frame part 31 has a front section 33. The key shank 50, in particular a key shank base body 51, is located on this front section 33. This key shank base body 51 is formed monolithically together with the first frame part 31, for example, cast together from metal. This realizes the rigid connection according to the invention between the frame 30 and the key shank 50.

[0145] To define the invention, axes and sides are used, which are particularly used in the Figures 3 and 4are illustrated. Accordingly, the key shank 50 extends along a longitudinal axis 90. Perpendicular to the longitudinal axis 90 are a thickness axis 91 and a width axis 92. The key bow 2 has two opposite broad sides 93. These two broad sides 93 are intersected by the thickness axis 91. Furthermore, the key bow 2 has two opposite narrow sides 94. The narrow sides 94 are intersected by the width axis 92.

[0146] The key shank 50 is located on a front side 95 of the key blade 2. A rear side 96 is opposite this front side 95. A key ring through-opening 14 for the key ring 102 can be located on this rear side 96. The front side 95 and the rear side 96 are intersected by the longitudinal axis 90. Both the frame 30 and the housing 10 are adjacent to the key ring through-opening 14.

[0147] A frame thickness 97 of the frame 30 is defined parallel to the thickness axis 91. In the illustrated embodiment, the frame 30 has this frame thickness 97 constant at every point. This frame thickness is preferably at least 3 mm, thus ensuring sufficient stability.

[0148] Furthermore, the illustration in Figure 3 that the housing 10, when viewed along the longitudinal axis 90 or the width axis 92, projects beyond the frame 30 on both sides, i.e. on both broad sides 93.

[0149] The top view in Figure 4shows a view along the thickness axis 91. It can be seen that the frame 30 protrudes beyond the housing 10 along the longitudinal axis 90 and along the width axis 92—i.e., completely. The frame 30 is thus formed circumferentially on the surface of the key bow 2. Here, the frame 30 is open in the direction of the thickness axis 91. The broad sides 93 of the key bow 2, or more precisely, the surfaces of the broad sides 93, are thus formed by the housing 10 and the frame 30.

[0150] The housing 10 forms a surface of the key bow 2 on opposite broad sides 93 cut by the thickness axis 91.

[0151] The housing 10 is composed of a first housing part 11 and a second housing part 12. Each housing part 11, 12 has a rail receptacle 13. Corresponding rails 43 of the frame 30 are inserted into this rail receptacle 13 in order to arrange the two housing parts 11, 12 against one another and to tightly seal the housing 10.

[0152] The exploded view in Figure 2 shows that a seal 28 can be inserted between the two housing parts 11, 12. Alternatively, this seal 28 can also be a component of one of the two housing parts 11, 12, for example, through a two-component injection molding process.

[0153] Front legs 34 of the first frame part 31 extend from the front section 33 in the direction of the rear side 96. As a result, the first frame part 31, together with the key shaft base body 51, is fork-shaped.

[0154] The second frame part 32 is U-shaped and comprises a rear section 35 parallel to the front section 33. From this rear section 35, parallel rear legs 36 extend towards the front side 95.

[0155] The two frame parts 31, 32 are connected to each other via connecting points 37. Each connecting point 37 has locking lugs 38 and corresponding locking counterpoints 39. These connecting points 37 form-fit the two frame parts 31, 32 to each other. The connecting points are spaced from the longitudinal axis 90.

[0156] The frame 30, in the embodiment shown the second frame part 32, has a frame socket opening 41 through which the socket 74 is accessible.

[0157] In the housing 10, in particular in the second housing part 12, there is a housing socket opening 15 for the socket 74.

[0158] The frame 30 has a gripping area 40 on each of its narrow sides 94. The two gripping areas 40 each form a surface of the key blade 2, which can be gripped by the user to rotate the key 1 in the locking device 101. The gripping areas 40, which are located directly on the frame 30, allow the torque to be directly transmitted to the key shaft 50. This prevents any undesirable stress on the housing 10.

[0159] According to the invention, the gripping portion 40 is thus rigidly connected to the key shaft 50. This enables a very good torque transmission from the user to the locking device 101, in particular to the cylinder core 104 and the driver 106.

[0160] In the illustrated embodiment, the two gripping areas 40 extend parallel and spaced apart from the longitudinal axis 90. In particular, the two gripping areas 40 are formed by the two front legs 34 and the two rear legs 36. The gripping areas 40 are separated from each other by the rear section 35 and the front section 33.

[0161] The two grip areas 40 extend over the entire length of the key bow 2.

[0162] For example, the section AA in Figure 5 shows a button extension 17 on the inside of the first housing part 11. This button extension 17 can be pressed onto a corresponding button 73. To do this, the user presses the two housing parts 11, 12 against each other.

[0163] The key blade 2 has a relatively large actuating portion 16, which is designed to be flexible enough to be pressed by the user to actuate the button 73. The user does not have to search for a specific, small spot on the key blade 2 to actuate the button 73, but can press on the relatively large actuating portion 16.

[0164] For example, the views in Figure 1 and Figure 4 illustrate that a relatively large area of the first housing part 11 is designed as an actuating section 16. This actuating section 16 is surrounded on all sides by a support section 18. Any area of the first housing part 11 that does not form the actuating section 16 is assigned to this support section 18.

[0165] In particular, the first housing part 11 has a flat end surface 29 on one of the two broad sides 93. This flat end surface 29 is largely formed by the actuating section 16. At least a rear portion of the flat end surface 29 is designed as a support section 18. Furthermore, the first housing part 11 comprises an edge section 20 that extends all the way around the flat end surface 29. This edge section 20 is also part of the support section 18.

[0166] In order to achieve a correspondingly flexible design of the actuating section 16, the flat end surface 29 can have different wall thicknesses. In particular, the illustration in Figure 6shows that a first thin wall thickness 21 and a second thicker wall thickness 22 are provided in the region of the end surface 29. In the illustrated embodiment, the two wall thicknesses 21, 22 merge into one another with a step 19. Alternatively, several steps or a continuous change in the wall thickness can be provided here.

[0167] To prevent the two housing parts 11, 12 from being pressed too far or too strongly against each other when the buttons 73 are actuated, a support column is provided, which is formed from a first support column part 23 and the inside of the first housing part 11 and a second support column part 24 on the inside of the second housing part 12. When the actuating section 16 is pressed in, the two support column parts 23, 24 meet to form the support column.

[0168] For example Figure 8shows that the first housing part 11 has a receiving groove 25 for inserting an insert element 54. This makes it possible to arrange the insert element 54 on the housing 10.

[0169] Furthermore, the housing 10 comprises a first light guide 26 on one broad side 93 and a second light guide 27 on the opposite broad side 93. The two light guides 26, 27 are each arranged to emit light on the associated broad side 93 and across the frame 30 in the direction of the key shaft 50. For this purpose, the light guides 26, 27 protrude above the frame 30.

[0170] As already described, the key shank 50 comprises the key shank base body 51, which is a monolithic component of the first frame part 31. This key shank base body 51 has two spaced-apart shank legs 52 and a shank leg connection 53. The shank leg connection 53 connects the two shank legs 52 to each other at the front end of the key 1.

[0171] Furthermore, the key shaft 50 comprises the insert element 54, in particular made of plastic. This insert element 54 is inserted between the two shaft legs 52. In particular, the sectional view CC in Figure 7 illustrates that the insert element 54 is located between the two shaft legs 52 and is connected to both shaft legs 52 via a tongue and groove connection 58.

[0172] Transmission elements 55 extend inside the insert element 54. Since the key 1 is designed as a reversible key, two of these transmission elements 55 are provided. For this purpose, the transmission elements 55 are arranged symmetrically in the key shaft 50.

[0173] In the area of the key shaft 50, the two transmission elements 55 each have a locking device contact surface 56. The respective locking device contact surface 56 is exposed on the surface of the key shaft 50 and can thus be used for data and / or energy transmission to the locking device 101.

[0174] Inside the key blade 2, the transmission elements 55 each have a circuit board contact surface 57 in order to electrically connect the two transmission elements 55 to a circuit board 71.

[0175] The previously described button 73 is located on the circuit board 71 and can be pressed by the actuating section 16, in particular via the button extension 17.

[0176] Furthermore, the socket 74 is located on the circuit board 71, which is designed here as a USB-C socket.

[0177] Relatively close to the button 73 there is a column recess 72, here in the form of a hole. The support column, formed by the two support column parts 23, 24, projects through this column recess 72.

[0178] On the circuit board 71 there is a wireless communication module 78, designed for short-range communication with the device 103.

[0179] Furthermore, Figure 9that a lighting device 75 is arranged on the circuit board 71. In the illustrated embodiment, this lighting device 75 comprises a first lighting element 76 in the form of an LED on one side of the circuit board 71 and a second lighting element 77 in the form of an LED on the opposite side of the circuit board 71. The first lighting element 76 is arranged to feed light into the first light guide 26. The second lighting element 77 is arranged to feed light into the second light guide 27. In particular, the two lighting elements are controlled synchronously so that they both emit the same pattern.

[0180] The two light elements 76, 77 are, in particular, LEDs that can illuminate in multiple colors. Furthermore, the electronics 70 is designed to control the lighting device 75, i.e., the two light elements 76, 77, to illuminate at least one piece of information.

[0181] Figure 12shows examples of the patterns regarding light color, intensity, and flashing pattern for different trigger events. Accordingly, for example, when button 73 is pressed 301, blue light (b) can be emitted with a "long," "short," "short" flashing pattern. The "long" signal represents the connection being established, while the "short" and "short" signals represent the existing connection.

[0182] When a charging cable is connected 304 to the socket 74, white light (w), for example, can be emitted, whereby both the light intensity and the duration of the individual light signals can increase over time. An interrupted pattern can represent the charging process, and a prolonged glow can indicate the complete charging.

[0183] When key 1 is removed 303 from locking device 101, for example, the light may flash twice blue (b) and once red (r), with the two blue light signals being short and the red light signal being long. The blue light signals indicate the connection to device 103. The red light signal indicates a fault.

[0184] For example, for inserting 302 of key 1 into locking device 101, two different patterns are provided, each representing a combination of information. In the combination "white" (w) "green" (g), "white" represents a low charge level of the energy storage device and "green" represents access authorization. In the combination "white-red-red," "white" represents a low charge level of the energy storage device and "red-red" represents denial of access authorization. If the energy storage device is sufficiently charged, the key will only emit the pattern "green" if access is granted and "red-red" if access is denied.

[0185] Figure 10illustrates a state during assembly of the key 1 according to the invention. Accordingly, the two housing parts 11, 12 are first placed on top of one another. The electronics 70, in particular also the energy storage device 85, is already located between the two housing parts 11, 12. Furthermore, the insert element 54 is inserted between the two housing parts 11, 12.

[0186] In order to press the two housing parts 11, 12 firmly together and, in particular, to compress the seal 28, the described rail receptacles 13 are provided in the two housing parts 11, 12, which are inserted into the corresponding rails 43 of the two frame parts 31, 32. The two frame parts 31, 32 can be pushed onto the housing 10 simultaneously or sequentially.

[0187] During this assembly process, the insert element 54, which is already connected to the housing 10, is inserted through an insert element through-opening 42 in the first frame part 31 and can thus be inserted between the two shaft legs 52.

[0188] Figure 11 illustrates an assembly method 200 for this exemplary embodiment. First, in an assembly method step a) 201, the electronics 70 and the energy storage device 85 are enclosed by the housing 10. Subsequently, in an assembly method step b) 202, the housing 10 is attached to the frame 30. This can be done without bending the housing 10 or the printed circuit board 71.

[0189] In assembly process step b) 202, the rail receptacles 13 are pushed into one another with the rails 43 of the first frame element 31, and simultaneously the insert element 54 is pushed into the key shank base body 51. The second frame element 32 is then pushed onto the housing 10, with the rails 43 of the second frame element 32 engaging the rail receptacles 13 of the housing 10. At the end of the sliding movement, the second frame element 32 is fastened to the first frame element 31 by means of the locking connection 38, 39. List of reference symbols

[0190] 1 key 2 key blade 10 Housing 11 First housing part 12 Second housing part 13 Rail receptacles 14 Key ring through-hole 15 Housing socket opening 16 Actuating section 17 Button extension 18 Support section 19 Shoulder 20 Edge section 21 First wall thickness 22 Second wall thickness 23 First support column part 24 Second support column part 25 Receiving groove 26 First light guide 27 Second light guide 28 Seal 29 Flat end face 30Frame 31First frame part 32Second frame part 33Front section 34Front legs 35Rear section 36Rear legs 37Connecting points 38Locking lugs 39Locking counterpoints 40Grip area 41Frame socket opening 42Insert element through-opening 43Rail 44Free space 50Key shank 51Key shank body 52Shaft shank 53Shaft shank connection 54Insert element 55Transmission elements 56Locking device contact surfaces 57Printed circuit board contact surfaces 58Tongue and groove connection 70Electronics 71Printed circuit board 72Column recess 73Button 74Socket 75Lighting device 76First light element (LED) 77Second light element (LED) 78Wireless communication module 85Energy storage 90Longitudinal axis 91Thickness axis 92Width axis 93Broad sides 94Narrow sides 95Front 96Rear 97Frame thickness 100Arrangement 101Locking device 102Key ring 103Device 104Cylinder core 105Carrier 106Locking device housing 200Assembly process 201Assembly process step a 202Assembly process step b 301Press as trigger event 302Insert as trigger event 303Unplug as trigger event 304Connect as trigger event

Claims

1. A key (1) for an electromechanical locking device (101), • wherein a longitudinal axis (90), a width axis (92) and a thickness axis (91) are each defined perpendicular to one another, • with a key bow (2) and • with a key shank (50) projecting along the longitudinal axis (90) from the key bow (2) for insertion into the locking device (101), • wherein the key bow (2) comprises an electrical energy accumulator (85) and / or electronics (70), • wherein the key bow (2) comprises a frame (30) in which the energy accumulator (85) and / or the electronics (70) is received, • wherein the frame (30) is rigidly connected to the key shank (50), • and wherein the frame (30) comprises at least one grip region (40) which forms a surface of the key bow (2) for a user to grasp, wherein the key shank (50) comprises a key shank base body (51), wherein the frame (30) is monolithically connected to the key shank base body (51), wherein the key bow comprises a housing (10), wherein the housing (10) is received by the frame (30) and wherein the housing (10) forms a surface of the key bow (2) on opposite broad sides (93) intersected by the thickness axis (91), wherein the frame (30) extends around the thickness axis (91) and wherein the frame (30) forms a free space open on both sides for the arrangement of the housing (10).

2. The key (1) according to claim 1 or 2, wherein the frame (30) is made of metal.

3. The key (1) according to one of the preceding claims, wherein the frame (30) comprises at least a first frame part (31) and a second frame part (32), wherein the first and the second frame part (31, 32) are connected to one another in a force-fitting and / or form-fitting manner at a connection point (37), preferably at at least two connection points (37), wherein the key shank (50) comprises an insert element (54), wherein the insert element (54) is fastened to the key shank base body (51) in a force-fitting and / or form-fitting manner.

4. The key (1) according to one of the preceding claims, wherein the housing (10) encloses the electronics (70) and / or the energy accumulator (85), wherein the housing (10) comprises a first housing part (11) and a second housing part (12), wherein the frame (30) comprises at least one rail (43), wherein the at least one rail (43) is designed to arrange the first housing part (11) and the second housing part (12) against one another.

5. The key (1) according to claims 3 and 4, wherein the insert element (54) is arranged on at least one of the housing parts (11, 12), wherein the insert element (54) comprises at least one transmission element (55) for transmitting electrical energy and / or electronic data to the locking device (101).

6. The key (1) according to claim 4 or 5, wherein the key (1) comprises a socket (74) for charging the energy accumulator (85) and / or for cable connection to the electronics (70), wherein the frame (30) comprises a frame socket opening (41) for the socket (74).

7. The key (1) according to claim 6, wherein one of the housing parts (11, 12) comprises an enclosing housing socket opening (15) for the socket (74).

8. The key (1) according to claim 6 or 7, wherein the electronics (70) comprises a circuit board on which the socket (74) is arranged.

9. The key (1) according to claim 5, wherein the key shank (50) comprises at least two of the transmission elements (55) for transmitting electrical energy and / or electronic data to the locking device (101), wherein the transmission elements (55) are arranged symmetrically for reversible key-like usability.

10. The key (1) according to one of the preceding claims, wherein the housing (10) projects beyond the frame (30) on both sides along the thickness axis (91).

11. The key (1) according to one of the preceding claims, wherein the key bow (2) comprises at least one lighting device (75), in particular with at least one lighting element (76, 77), and the housing (10) comprises at least one light guide (26, 27), wherein the at least one light guide (26, 27), when viewed perpendicular to the thickness axis (91), projects beyond the frame (30).

12. The key (1) according to one of the preceding claims, wherein a key ring through-opening (14) for fastening the key (1) to a key ring is formed between the frame (30) and the housing (10).

13. An assembly method (200) for assembling a key (1), in particular a key (1) according to one of the preceding claims, wherein the key (1) comprises a key bow (2) and a key shank (50) rigidly connected to the key bow (2), wherein the key bow comprises a housing (10), wherein the housing (10) is received by a frame (30), and wherein the housing (10) forms a surface of the key bow (2) on opposite broad sides (93) intersected by the thickness axis (91), wherein the key shank (50) comprises a key shank base body (51), wherein the frame (30) is monolithically connected to the key shank base body (51), wherein the assembly comprises at least the following steps: a. Surrounding electronics (70) and / or an electrical energy accumulator (85) of the key (1) with the housing (10), and b. Fastening the housing (10) to the frame (30), wherein the frame (30) comprises at least one grip region (40) which forms a surface of the key bow (2) for a user to grasp, wherein the frame (30) extends around the thickness axis (91) and wherein the frame (30) forms a free space open on both sides for the arrangement of the housing (10).

14. The assembly method (200) according to claim 13, wherein in step b. the housing (10) is arranged, in particular pushed in, on a first frame part (31) and on a second frame part (32), and the two frame parts (31, 32) are fastened to one another.

15. The assembly method according to claim 13 or 14, wherein when the housing (10) is fastened to the frame (30), in particular to the first frame part (31), an insert element (54) of the key shank (50) is pushed into a key shank base body (51).

Images