Electronic frame lock

Abstract

An electronic frame lock has a control device configured to, starting from an open position of a circular hoop of the frame lock, control a motor to rotate a cam into a release position based on a closing command, and thus move a latch preloaded into a locked position into an unlocked position; the motor is then controlled to rotate the cam into a preloaded position in which the latch is released for movement toward the unlocked position; and, upon detecting the closed position of the circular hoop, controlling the motor to rotate the cam into a blocking position in which the cam secures the latch in the locked position.

Description

Technical Field

[0001] The present invention relates to an electronic frame lock for a bicycle. Background Art

[0002] For example, such a frame lock can be fastened to the frame of a bicycle and has a circular hoop which, in a closed position, can be engaged by one of the wheels between two spokes, thereby securing the bicycle against unauthorized riding. However, in an open position, the circular hoop can be retracted from the space in which the wheel rotates during travel with the bicycle, so as to release the bicycle for such riding. For example, a bicycle that can be secured by such a frame lock can be configured as a two-wheeled vehicle, wherein, however, the frame lock can also be used to secure three-wheeled or four-wheeled bicycles, such as cargo bicycles. The bicycle can be human-powered, motor-powered or motor-assisted, in particular by means of an electric motor (e.g. an e-bike or pedal-assisted vehicle, an electric tricycle, an electric wheelchair, an electric quadricycle or the like).

[0003] Such a frame lock is known, for example, from DE 10 2005 041 268 A1, in which a latch is provided which is preloaded towards the locking position and by means of which the annular collar can be fixed in the closed position and in the open position. In addition, in the frame lock, a blocking spring is provided which is configured to fix the latch in the locking position to prevent movement against the preload, in order to thereby protect the lock in particular against unauthorized opening attempts using the so-called hammering method. With this method, an attempt is made to push the preloaded latch back briefly against the preload by striking, and to use this time window to move the annular collar out of the closed position. However, the blocking spring fixes the latch to prevent such a push back due to the impact.

[0004] However, in order to enable an authorized user to move the latch into the unlocked position and to be able to move the annular hoop between the open position and the closed position, in known frame locks, a shaft is provided which can be rotated by an electric motor and which has an unlocking cam, wherein the latch can be pushed into the unlocked position by the unlocking cam when the shaft is rotated. In addition, at the shaft, a release nose is formed which cooperates with the forced guide surface of the blocking spring and which pushes the blocking spring back during the rotation of the shaft so that the blocking spring releases the latch for movement into the unlocked position.

[0005] In this prior art, the latch can thus be secured against unauthorized movement into the unlocked position, but this requires a separate component in the form of a blocking spring, and the reliability of the securing of the latch and / or the operability of the frame lock may be impaired over the service life due to wear of the blocking spring or its forced guide surface. In addition, handling the frame lock is difficult, since the user must, for example, manually hold the circular hoop after the transfer into the closed position until the shaft has rotated far enough for the latch to be released to move into the locked position. However, if the circular hoop reaches the closed position before the latch is released and if the circular hoop is not held in the closed position by the user, the circular hoop preloaded into the open position returns to the open position in an undesirable manner. Summary of the invention

[0006] It is therefore an object of the present invention to provide an electronic frame lock and a simplified process which are able to more reliably ensure protection against unauthorized opening attempts and in particular against hammering methods.

[0007] This object is achieved by an electronic frame lock having the features of claim 1 .

[0008] The electronic frame lock includes a circular hoop, which is rotatable between an open position and a closed position; a motor; a cam, which is drivable by the motor to perform an eccentric rotational movement about a rotation axis; a latch, which is movable between a locked position and an unlocked position on a straight line, which is perpendicular to the rotation axis and radially oriented relative to the circular hoop, and the latch is preloaded toward the locked position; a hoop detector, which is configured to detect the closed position of the circular hoop; and a control device. The circular hoop in the closed position can also be secured by the latch in the locked position to prevent movement toward the open position, and can be released by moving the latch into the unlocked position to move into the open position.

[0009] In addition, the cam can be rotated into the blocking position, the preload position and the release position by the motor, and the latch has a control opening into which the cam engages. Therefore, the latch can be driven by rotating the cam according to the rotational movement of the cam and the contour of the control opening.

[0010] Also, regarding the latch:

[0011] - the latch can be secured by the cam against movement from the locked position to the unlocked position by rotating the cam into the blocking position,

[0012] By rotating the cam into the preloaded position, the latch can be released for movement towards the unlocked position against the preload.

[0013] - By rotating the cam into the release position, the latch can be moved into the unlocked position by the cam movement against the preload.

[0014] In addition, the control device is configured to control the motor to selectively rotate the cam into a blocking position, a preload position, and a release position, wherein the control device is further configured to control the motor to rotate the cam into the blocking position in response to detection of a closed position of the circular hoop by a hoop detector.

[0015] Since the cam is configured to engage in the control opening of the latch and to secure the latch in a blocking position against movement from the locked position towards the unlocked position, the cam can be used directly to secure the latch in the locked position, and the cam is also used to move the latch from the locked position into the unlocked position. Therefore, there is no need to use a separate component to secure the latch; instead, the cam that is required anyway to move the latch into the unlocked position can also be used to secure the latch. In addition, the cam can also be said to be the central mechanical component for moving the latch and thus for controlling the locking mechanism, which cam is usually configured stably so that this stability can also be used to secure the latch in the locked position. Compared with the prior art, this makes it easier and more reliable for the frame lock to prevent unauthorized opening attempts using a hammering method.

[0016] In the preload position of the cam, the latch is released for movement against the preload towards the unlocked position and is in particular movable between the locked position and the unlocked position. The rotation of the cam into the preload position makes it possible to have the latch ready for blocking the engagement of the circular hoop in the closed position, but in this respect allows displacement towards the unlocked position. Thus, when the cam is rotated into the preload position, the latch can slide along the circular hoop, for example during the movement of the circular hoop from the open position into the closed position, so that when the closed position is reached, it can be immediately moved into the locked position due to the preload and the circular hoop can be secured against movement towards the open position. In this regard, in particular, the circular hoop can already be secured against movement back into the open position, so that the user, for example even in an embodiment in which the circular hoop is preloaded into the open position, only needs to rotate the circular hoop into the closed position without having to manually hold the circular hoop in the closed position until the cam is rotated into the blocking position.

[0017] In addition, by correspondingly controlling the motor, the rotation of the cam into the release position makes it possible to move the latch into the unlocked position and, for example, disengage the latch from the engagement recess in the closed position, thereby freeing the annular collar for movement into the open position. In this regard, a fully electronic control of the latch can be achieved.

[0018] The configuration in which the control device can intentionally control the motor to rotate the cam into the blocking position, the preloading position and the release position also enables situation-dependent positioning of the latch to enable improved handling of the lock and, in particular, automatic blocking of the circular hoop in the closed position. For example, during the movement of the circular hoop from the open position towards the closed position, the cam can be rotated into the preloading position for this purpose by appropriate control of the motor in order to prepare for automatic locking of the circular hoop when the closed position is reached.

[0019] In addition, by designing the frame lock with a hoop detector for detecting the closed position, it is possible to achieve that: the control device, in response to a corresponding signal of the hoop detector, can control the motor to rotate the cam into the blocking position after reaching the closed position, so as to automatically fix the latch by the cam to prevent movement from the locked position. To some extent, since the latch is automatically engaged after reaching the closed position by the previous rotation of the cam into the preloaded position, temporary fixation to prevent the circular hoop from moving back to the open position can be achieved, and therefore, due to the signal of the hoop detector causing the cam to automatically rotate into the blocking position, the latch is fixed in the locked position and thus reliably locks the circular hoop to prevent possible prying attempts.

[0020] In order to be able to selectively drive the latch into the unlocked position and block it in the locked position, the cam can in particular be configured to directly mechanically contact the latch. In this regard, it can in particular be provided that no further drive transmission element is arranged between the cam and the latch, but that the latch can be fixed in the locked position by direct engagement of the cam and can be moved into the unlocked position.

[0021] Since the latch is movable perpendicularly to the rotation axis of the cam and radially to the circular collar on a straight line between the locked position and the unlocked position, the latch is movable in particular in a movement direction oriented perpendicularly to the rotation axis of the cam and radially to the circular collar.

[0022] Further embodiments emerge from the dependent claims, the description and the drawings.

[0023] In some embodiments, the circular hoop may have a closed position engagement recess, and the latch may be configured to engage into the closed position engagement recess in the locked position when the circular hoop is in the closed position and thereby secure the circular hoop against movement into the open position.

[0024] In particular, it can be provided that, when the cam is positioned in the preload position, the latch is configured to move directly into the locking position after reaching the closed position and snap into the closed position engagement recess to thereby block the annular hoop from moving towards the open position.

[0025] In some embodiments, the control device may be configured to, based on a received closing command, start from the open position of the circular hoop:

[0026] - First, the control motor rotates the cam into the release position, thereby moving the latch into the unlocked position;

[0027] - then, controlling the motor to rotate the cam into a preloaded position; and

[0028] - In response to the detection of the closed position of the circular hoop by the hoop detector, the control motor rotates the cam into the blocking position.

[0029] In this embodiment, it is possible to selectively block the latch in the locked position, release the latch to move out of the locked position, or move the latch into the unlocked position only by rotating the cam, so that this possibility can be used intentionally when controlling the frame lock during the transition of the circular hoop from the open position into the closed position. For this purpose, the control device can be configured based on a closing command received when the circular hoop is in the open position to first control the motor to rotate into the released position and thereby move the latch into the unlocked position. In particular, the circular hoop can be released so as to be moved into the closed position by the latch being moved into the unlocked position.

[0030] Then, for example, the user can start to move the circular hoop towards the closed position, in particular against the preload, and the control device can control the motor to rotate the cam into the preload position. Thus, in particular during the further movement of the circular hoop towards the closed position, the latch can slide along the circular hoop so as to snap into the aforementioned closed position engagement recess after reaching the closed position, for example due to the preload, and secure the circular hoop in the closed position. The control device can be configured in particular to control the motor to rotate the cam into the preload position if the circular hoop has been moved out of the open position.

[0031] By designing the frame lock with a hoop detector, reaching the closed position can be detected and a corresponding signal can be sent in particular to a control device, which can then control the motor to rotate the cam into the blocking position and thereby fix the latch in the locked position, in particular against the hammering method. Thus, the user only needs to send a closing command and move the circular hoop into the closed position, thereby fixing the circular hoop against movement into the open position by snapping the latch into the closed position engagement recess and thereby reliably locking the circular hoop in the closed position by rotating the cam into the blocking position, which can be done fully automatically.

[0032] The control device can be configured in particular to stop the motor when the preload position is reached and, as a result of the detection of the closed position, only control the motor to rotate the cam further. Thus, during the described control cycle for moving the annular hoop from the open position into the closed position, the cam can in particular not be rotated continuously, but can at least briefly remain in the respective positions, i.e. the unlocked position and the preload position.

[0033] For example, the frame lock may have a radio receiver capable of receiving a closing command via a wireless connection. Such a radio connection may in particular be a mobile radio connection, a WLAN / WiFi connection and / or a Bluetooth connection. The frame lock may also be configured to receive the closing command from a smartphone. In addition, it may also be provided, for example, that the radio receiver is configured to communicate with a handheld transmitter provided specifically for this purpose and associated with the frame lock, and / or with a remote control associated with the frame lock.

[0034] In some embodiments, the control device of the frame lock may also be connected and / or connectable to a control unit of an electronic bicycle (e-bike) to be able to receive a closing command from such a control unit. In this context, the communication between the control unit of the e-bike and the control device of the frame lock may typically be provided via a radio connection and / or via a cable connection.

[0035] Additionally, in some embodiments, encrypted transmission of the signal used to send the shutdown command may be provided.

[0036] As an alternative to such reception, the frame lock can also be configured to receive a closing command by inputting a numerical code or a biometric code such as a fingerprint, for which purpose a corresponding input device can be provided at the frame lock. The closing command can generally be a command by which the user can indicate that he wants to close the frame lock and move the circular hoop into the closed position. Thus, if the circular hoop is in the open position when this command is received, the closing command can also lead to moving the latch into the unlocked position, depending on the situation caused by the received command, because in this case the frame lock is obviously locked and the circular hoop will be moved into the closed position.

[0037] In some embodiments, the cam can rotate about the rotation axis of the electric motor. In such an embodiment, the rotation axis can thus correspond to the rotation axis of the electric motor, however, the cam does not have to be directly connected to the motor shaft of the electric motor. Instead, in some embodiments, for example, a gear can also be effective between the electric motor and the cam, in particular a gear of coaxial design, wherein a reduction in the rotation speed of the electric motor can in particular be carried out via such a gear.

[0038] Furthermore, in some embodiments, it may be provided that the cam is rotatable about an axis of rotation aligned parallel to the motor axis of rotation of the electric motor. In such an embodiment, the cam may also be connected to the electric motor, for example via a gear.

[0039] In some embodiments, the electric motor may be arranged substantially tangentially to the circular hoop. Such a tangential arrangement of the electric motor may in particular enable the design of a frame lock with a low overall height to enable the frame lock to be attached to the frame of the bicycle in a space-saving manner.

[0040] Furthermore, the motor, the cam and the latch may be arranged one behind the other in this order along the axis of rotation.

[0041] In some embodiments, the cam may have a control extension, by means of which the cam engages in the control opening. In some embodiments, the control extension may in particular protrude from a control plate of the cam towards the latch in order to be able to engage in the control opening and to be guided along the contour of the control opening. For example, such a control plate may be pivotable about an axis of rotation, wherein the control extension may, for example, be arranged at a radial end of such a pivotable control plate relative to the axis of rotation in order to be able to perform an eccentric rotational movement. Furthermore, in some embodiments, the control extension may also be arranged on a disk-shaped control plate and eccentrically relative to the axis of rotation, so that in such an embodiment the control plate may be configured as a disk rotatable about the axis of rotation.

[0042] In some embodiments, the control opening may have a preload portion with a first extension in the direction of movement of the latch. In addition, the control device may have a locking portion with a second extension in the direction of movement of the latch that is smaller than the first extension, wherein the control extension of the cam is arranged in the preload portion in the preload position and in the locking portion in the release position and the blocking position.

[0043] As already mentioned, the direction of movement of the latch can be oriented radially relative to the circular collar and perpendicular to the axis of rotation of the cam. Since the cam can be arranged in the preloaded portion of the control opening in the preloaded position, the latch can be moved between the locked position and the unlocked position in the preloaded position without the control extension previously abutting against the border of the control opening. On the other hand, the locking portion extending less in the direction of movement of the latch than the preloaded portion can cause the control extension to abut against corresponding borders of the border of the control opening during the rotation of the cam, which borders are opposite to each other relative to the direction of movement of the latch, so as to drive the latch into the unlocked position during the rotation of the latch into the release position or to fix the locking pin in the locked position by rotating into the blocking position.

[0044] In some embodiments, the extension of the locking portion along the movement direction of the latch may be smaller than the spacing between the position of the control extension in the blocking position and the position of the control extension in the release position. Due to such a dimensioning of the locking portion, it can be achieved that the control extension can abut against the boundary of the locking portion, for example during movement from the blocking position into the release position, and can move the latch against the preload into the unlocked position during further rotation into the release position.

[0045] In some embodiments, in the release position, the control extension can contact a border of the control opening facing away from the circular hoop, and in the blocking position, the control extension can contact a border of the control opening facing the circular hoop. Due to the contact of the control extension with the border facing the circular hoop in the blocking position, it can be achieved in particular that the latch is blocked by the control extension to prevent movement away from the circular hoop, thereby fixing the latch in the locked position. However, during rotation into the release position, the control extension can abut the border of the control opening facing away from the circular hoop and, by cooperating with this border, can move the latch into the unlocked position against the preload.

[0046] Typically, the contour of the control opening may thus be formed by the border of the control opening.The control opening may also be formed as an opening in the latch in the manner of a window, which opening is delimited on the outside by the border defining the contour of the control opening.

[0047] In some embodiments, the latch may be configured as a flat sheet of metal, thereby also enabling a more compact frame lock design.

[0048] In some embodiments, the latch may have a concave circular recess facing the circular hoop. In the locked position of the latch, the recess may be particularly configured to engage around a portion of the circular hoop, which is convexly rounded in a complementary manner thereto.

[0049] In some embodiments, the circular hoop may have a guide portion including a convexly rounded portion of the circular hoop, wherein the closed position engagement recess may be formed at and / or in the environment of the guide portion. Side surfaces of the latch that are opposite to each other with respect to the rotation axis and that may surround the aforementioned circular recess may in particular abut against the boundary of the closed position engagement recess in the locked position to prevent the circular hoop from moving.

[0050] Furthermore, in some embodiments, the latch may have a transverse centering recess configured to support the latch at the guide portion of the circular hoop and / or to laterally surround the guide portion during sliding along the circular hoop in the preloaded position.

[0051] In some embodiments, the circular collar can be preloaded into the open position. In order to transfer the circular collar from the open position into the closed position, in such an embodiment, a handle to be actuated manually can therefore be provided, by means of which the circular collar can be transferred into the closed position against the preload. However, starting from the closed position, if the latch has been transferred into the unlocked position and disengaged from the closed position engagement recess by the cam, in particular in response to an opening command, the circular collar can be automatically transferred into the open position due to the preload. In addition, it can be achieved by such a preload that, for example, in the case of an incomplete transfer into the closed position, the circular collar automatically returns to the open position, so that the user can perceive that the frame lock has not yet been transferred into the closed position and thus, for example, a bicycle that can be secured by the frame lock has not been prevented from being ridden away.

[0052] In some embodiments, the hoop detector may be configured to detect an open position. Thus, in such an embodiment, a signal may in particular be transmitted to the control device both when the circular hoop is in the closed position and when the circular hoop is in the open position. The control device may be configured to take into account the signal of the hoop detector when controlling the motor and / or to distinguish the closed position from the open position based on the signal.

[0053] In some embodiments, the circular hoop may have an open position engagement recess, and the latch may be configured to engage into the open position engagement recess in the locked position when the circular hoop is in the open position and thereby secure the circular hoop against movement into the closed position.

[0054] This fixing of the circular hoop in the open position makes it possible in particular to prevent an undesired movement of the circular hoop into the closed position, for example during travel with the bicycle. In this embodiment, the circular hoop - in particular if the circular hoop is additionally preloaded towards the open position - can always be arranged in two clearly defined positions and can be fixed in these two positions by means of a latch, both in the closed position and in the open position, against movement into the respective other position.

[0055] In some embodiments, the control device may be configured to, after receiving a closing command, control the motor to move the cam into the blocking position after a predetermined or predeterminable waiting time if the hoop detector detects an open position after a predetermined or predeterminable waiting time.

[0056] In such an embodiment, the control device can therefore be configured to check whether the circular hoop has actually been moved out of the open position due to the closing command or whether the circular hoop has been left in the open position. If the hoop detector still detects the open position after the waiting time, the circular hoop will not be moved despite the closing command. By controlling the electric motor to move the cam into the blocking position, it can be achieved in this case that the latch is blocked again in the locking position and the circular hoop is thereby fixed in the open position. In this way, an undesirable remainder of the latch in the unlocked position and the resulting release of the circular hoop for movement into the closed position can be avoided, which can, for example, lead to a movement of the circular hoop due to vibrations occurring during travel with the bicycle.

[0057] For example, the waiting time can be stored by the manufacturer in the control device, for example in a non-volatile memory of the control device, and can thus be predefined. However, it can also be provided that the user himself can predefine the waiting time and, for example, can write it to such a memory. The waiting time can, for example, be in the range of 1 s to 30 s, wherein, however, other waiting times, for example in the range of one minute, can generally also be predefined or predefinable. In particular, the freely predefinable waiting time can also enable an unrestricted setting of the waiting time. For example, the waiting time can be adapted by a setting at a smartphone, wherein the selected value of the waiting time can be sent to a radio receiver of the frame lock via a radio connection.

[0058] Additionally, in some embodiments, the control device may be configured to control the motor to rotate the cam into the preload position only in response to a signal from the hoop detector indicative of movement of the circular hoop out of the open position after the cam has rotated into the release position.

[0059] Such a signal characterizing the movement of the circular hoop from the open position can in particular be an interruption of a signal of the hoop detector, by which the arrangement of the circular hoop in the open position is informed to the control device. Alternatively or additionally, however, the hoop detector can also include a further sensor to detect the circular hoop between the open position and the closed position, wherein the control device can be configured to control the motor in response to the signal of the further sensor to rotate the cam into the preload position.

[0060] In this embodiment, it can be provided in particular that the control device is configured to hold the cam in the release position after receiving a closing command until a movement towards the closed position has taken place or a waiting time has elapsed. In the first case, the control device can then control the motor to rotate the cam into the preload position to enable snapping into the closed position engagement recess, while in the second case, the control device can control the motor to rotate the cam into the blocking position to secure the annular hoop in the open position again.

[0061] In some embodiments, the control device may be configured to, starting from the closed position of the circular hoop, first control the motor to move the cam into the release position and thus the latch into the unlocked position based on the received opening command. In addition, the control device may be configured to subsequently control the motor to rotate the cam into the blocking position in response to the detection of the open position of the circular hoop by the hoop detector.

[0062] For example, the opening command can also be received at a radio receiver of the frame lock and / or can be sent via a smartphone. The opening command can in particular correspond to a command by which a user of the lock can indicate that he wants to send the circular hoop from the closed position into the open position, and the opening command can generally be sent in the same way as the closing command. In particular in an embodiment in which the circular hoop is preloaded towards the open position, the circular hoop can be automatically moved from the closed position to the open position due to the rotation of the cam into the release position and the movement of the latch into the unlocked position, wherein, after the hoop detector detects the open position, the latch can then be automatically fixed in the locked position by rotating the cam into the blocking position and the movement of the circular hoop into the open position can be blocked.

[0063] In some embodiments, the control device can also be configured to control the motor to move the cam into the blocking position after a predetermined or predeterminable waiting time after the opening command, when the hoop detector detects the closed position. In this regard, it can also be provided that if, after the waiting time has elapsed, no movement out of the closed position occurs despite the receipt of the opening command, the latch can be fixed in the locking position again after the receipt of the opening command. This can be provided in particular in embodiments in which the annular hoop is not preloaded into the open position, but must be moved intentionally, and in particular manually, from the closed position into the open position by actuating the handle.

[0064] In some embodiments, it can also be provided that the cam can be rotated from the release position into the blocking position via the preload position. Therefore, in such an embodiment, it can be provided that the cam must be rotated via the preload position in any case for the rotation from the release position into the blocking position, so that after the latch is transferred into the unlocked position, the cam can always be rotated in a constant rotation direction in order to finally reach the blocking position. However, the rotation of the cam does not have to be continuous in this respect; instead, the control device can be configured to stop the cam in the preload position by correspondingly controlling the motor and to rotate the cam into the blocking position by controlling the motor only in response to a signal from the hoop detector that the circular hoop is detected in the closed position. However, when transferring the circular hoop from the closed position into the open position, it can be provided that, in particular if the circular hoop is preloaded into the open position, the control device is configured to control the motor to continuously rotate the cam from the release position into the blocking position when the open position is detected.

[0065] However, in an embodiment without a preloaded circular hoop, it can also be provided that, due to the opening command, the cam is rotated into the preloaded position after leaving the closed position, so that the latch can snap into the open position engagement recess when reaching the open position, and only after reaching the open position, the cam is rotated from the preloaded position into the blocking position.

[0066] In an embodiment in which the circular hoop is not preloaded toward the open position, the control device may be specifically configured to control the motor to rotate the cam into the preload position only in response to a signal of the hoop detector indicative of movement of the circular hoop out of the closed position after the cam has been rotated into the release position due to receiving the opening command. Thus, when the open position is reached, the latch may snap into the open position engagement recess, wherein the control device may then control the motor to rotate the cam into the blocking position in response to detection of the open position of the circular hoop.

[0067] For example, when the hoop detector no longer emits a signal indicative of the arrangement of the circular hoop in the blocking position, the control device can control the motor to rotate the cam into the preload position, so that the interruption of this signal can characterize the movement of the circular hoop out of the closed position. In addition, in some embodiments, further sensors already mentioned above and / or even further sensors can also be provided to detect the leaving of the closed position.

[0068] In some embodiments, the motor may be configured only to move the cam between the release position and the blocking position. The cam may in particular rotate 180 degrees from the release position into the blocking position, and rotate 180 degrees from the blocking position into the release position.

[0069] Additionally, in some embodiments, the preload position may be reached by rotating the cam 90 degrees starting from the blocking position and starting from the releasing position.

[0070] In addition, in some embodiments, the blocking position can be defined by a rotational position of the cam, wherein the cam and / or the control extension of the cam has a minimum spacing from the circular hoop in the radial direction, and the release position can be defined by a rotational position of the cam, wherein the cam and / or the control extension has a maximum spacing from the circular hoop in the radial direction. If the blocking position and the release position are arranged 180 degrees offset from each other, and the preload position is arranged 90 degrees offset from these positions, the cam and / or the control extension can have an average spacing from the circular hoop in the preload position, in particular in the radial direction, relative to the maximum spacing and the minimum spacing, so that the latch can move between the unlocked position and the locked position.

[0071] Additionally, in some embodiments, the cam may be rotated from the blocking position into the releasing position along a first rotational direction, and rotated from the releasing position into the blocking position along a second rotational direction opposite the first rotational direction.

[0072] Thus, in such an embodiment, the rotation of the cam can be limited to a rotation between a release position and a blocking position, so that the release position and the blocking position can define respective end positions of the cam relative to its rotation. In particular, if the cam is rotated from the release position into the closed position or from the closed position into the release position, the cam can therefore always be rotated via the preload position. In addition, in such an embodiment, the release position and the blocking position can be diametrically opposite to each other relative to the rotation of the cam. Such a limitation of the rotation of the cam can in particular also make possible a compact design of the frame lock, in particular the control opening does not have to provide space for the entire 360 ​​degree rotation of the cam, but, in particular perpendicularly to the direction of movement of the latch, only has to have an extension corresponding to the range of movement of the cam, in particular a control extension of the cam that engages with the control opening during a limited rotation.

[0073] In some embodiments, the hoop detector may include at least one permanent magnet and a fixed magnetic field sensor at the circular hoop. The fixed magnetic field sensor may be arranged in particular in the environment of the latch to detect when the circular hoop is in the closed position by detecting the permanent magnet. For this purpose, the permanent magnet may be arranged in particular in the environment of the closed position engagement recess.

[0074] Furthermore, in some embodiments, it can be provided that the circular hoop has at least two permanent magnets, wherein the detection of a first of the two permanent magnets characterizes the closed position, and the detection of a second of the two permanent magnets characterizes the open position of the circular hoop. For example, the permanent magnets can be arranged in the environment of the closed position engagement recess and / or the open position engagement recess.

[0075] In some embodiments, at least two permanent magnets may have opposite polarity orientations (North-South or South-North). In such embodiments, the permanent magnets may trigger different signals at the magnetic field sensor, so that the control device can distinguish whether the circular hoop is in the open position or in the closed position based on the received signals.

[0076] Additionally, in some embodiments, the hoop detector may include, for example, a mechanical contact switch and / or a capacitive proximity switch to enable detection of a closed position and / or an open position.

[0077] In some embodiments, the motor shaft of the electric motor may be connected to a potentiometer, and the control device may be configured to determine the rotational position of the cam based on the signal of the potentiometer. In particular, the control device may be configured to detect a voltage at the potentiometer, which voltage changes due to the rotation of the motor shaft of the electric motor, and to draw conclusions about the rotational position of the cam as a result of the detected voltage. This may in particular also enable the detection of the preload position of the cam, so that the motor can be stopped, for example, when the preload position is reached. Such detection of the rotational position based on the potentiometer signal is known to the person skilled in the art and therefore does not need to be described in detail herein.

[0078] Typically, the closed position engagement recess and / or the aforementioned open position engagement recess may be formed directly in the circular hoop, or indirectly in the circular hoop via one or more raised portions of the circular hoop.

[0079] Furthermore, the disclosure of DE 10 2005 041 268 A1 is explicitly included in the present disclosure with regard to the basic design of the frame lock, and the features explained therein can also be implemented in embodiments of a frame lock of the type disclosed therein, if they do not contradict the above explanations. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] The invention will be explained below by way of example with reference to embodiments and the accompanying drawings.Firstly, however, the basic mode of operation of an electronic frame lock will be explained using a frame lock known from DE 10 2005 041 268 A1.

[0081] In the attached picture:

[0082] Figure 1A and Figure 1B A corresponding illustration of a prior art electronic frame lock is shown, with the latch of the frame lock and the circular hoop of the frame lock in different positions;

[0083] FIG. 2A to FIG. 2Ccorresponding diagrams showing details of an embodiment of an electronic frame lock according to the present disclosure, wherein one cam is positioned in a blocking position, one cam is positioned in a preloaded position, and one cam is positioned in a released position; and

[0084] Figure 3A A schematic representation of the control opening of the latch is shown. DETAILED DESCRIPTION

[0085] Figure 1A The structure of a frame lock 57 for mounting on a spoke of a rear wheel of a bicycle according to the prior art DE 10 2005 041 268 A1 is schematically shown. The frame lock 57 has a circular hoop 11 for engaging around the rear wheel. The circular hoop 11 has an open position engaging recess 13 and a closed position engaging recess 15 and is preloaded to the rear wheel by a tension spring 17. Figure 1A As long as the annular collar 11 is not locked, it can be rotated by the handle 19 against a preload in the closing direction 21 towards the closed position.

[0086] By compression spring 25 toward Figure 1A The latch 23 shown, preloaded in the locked position, cooperates with the circular hoop 11. The latch 23 has a central recess 27. In the region of the latch 23, a shaft 29 with an unlocking cam 31 engages in the central recess 27. In another longitudinal section, the shaft 29 has a switching cam 33. The front side of the shaft 29 is designed as an eccentrically arranged inclined surface in the form of a release nose 35. The release nose 35 cooperates with a blocking spring 37, which will be explained below.

[0087] The electric motor 39 is provided as a drive device for the shaft 29 and preferably has an integrated or mounted gear (not shown) for speed reduction. The electric motor 39 is controlled by a control device 41. The control device 41 is connected on the input side to a contact switch 43 cooperating with the switch cam 33 of the shaft 29. In addition, the control device 41 is connected on the input side to a radio receiver 45. A battery 47 (or accumulator) is used for the energy supply of the electric motor 39, the control unit 41 and the radio receiver 45.

[0088] Figure 1A The frame lock 57 shown is used to secure the associated bicycle from unauthorized use. To this end, the circular hoop 11 can be moved from the open position shown into a closed position in which it engages in the intermediate space between two adjacent spokes of the rear wheel and thereby blocks the rear wheel.

[0089] The circular collar 11 can be locked in the open position shown and in the closed position described by means of a latch 23. For this purpose, a compression spring 25 pushes the latch 23 towards the circular collar 11. As soon as the shaft 29 together with the unlocking cam 31 releases the latch 23 for this purpose, the latch 23 thus contacts the upper side of the circular collar 11 or engages in one of the two engagement recesses 13, 15, if they are at the level of the latch 23. Figure 1A As shown, if the latch 23 is engaged in the open position engagement recess 13, the circular hoop 11 is fixed in the open position. However, if the latch 23 is engaged in the closed position engagement recess 15, this corresponds to the closed position of the circular hoop 11.

[0090] By means of the rotation axis 29, the latch 23 can be briefly moved into the unlocked position by means of the unlocking cam 31 in the unlocking direction 49 against the preload of the compression spring 25. In this unlocked position, the circular hoop 11 is released for the rotational movement. Figure 1A Starting from the open position of the annular collar 11 , the user can move the annular collar 11 in the closing direction 21 by means of the handle 19 in order to finally move the annular collar 11 into the closed position already explained. Figure 1B The frame lock is shown during such a movement of the circular collar 11 in the closing direction 21. If, at this point in time, the unlocking cam 31 of the shaft 29 has released the latch 23 again and the compression spring 25 has therefore pushed the latch 23 toward the circular collar 11 again, this does not impair the further closing movement of the circular collar 11. Figure 1B As shown, the latch 23 only contacts the upper side of the circular hoop 11 until the closed position engagement recess 15 is at the level of the latch 23. The latch 23 can then snap into the closed position engagement recess 15 to secure the circular hoop 11 in the closed position thus reached.

[0091] The following features of the frame lock 57 are also available from Figure 1B As can be seen in FIG. 1 , if the user does not complete the closing actuation during the closing movement of the circular hoop 11, i.e., when the latch 23 is located between the open position engagement recess 13 and the closed position engagement recess 15, and the latch 23 therefore does not enter into engagement with the closed position engagement recess 15, the tension spring 17 again pulls the circular hoop 11 back into position. Figure 1A Therein, the latch 23 then snaps into the open position engagement recess 13 due to its preload (see Figure 1A ). In this case, the circular collar 11 is also secured here to prevent unauthorized or unintentional subsequent closing actuation. Figure 1AIn the open position of the circular collar 11 shown, the latch 23 is actually briefly unlocked due to a closing command issued by the user, but during this time interval the circular collar 11 is not rotated at all in the closing direction 21. In this case, the circular collar 11 therefore remains in the open position and, due to the corresponding rotational movement of the shaft 29, the latch 23 immediately reengages in the open position engagement recess 13 as soon as it is released for this purpose.

[0092] Another feature of the frame lock 57 shown is the blocking spring 37. As long as the latch 23 (such as Figure 1A ) is in the locked position, the blocking spring 37 engages behind the latch 23. This applies to both Figure 1A The open position shown also applies to the closed position of the circular hoop 11 as explained. As long as the blocking spring 37 engages in this way behind the latch 23, the latter can be secured against unauthorized unlocking movements according to the so-called "hammering method". In order to release the latch 23 for an (authorized) movement in the unlocking direction 49, the blocking spring 37 is briefly pushed back against the preload it exerts so that the free end of the blocking spring 37 is disengaged from the engagement with the latch 23. For this purpose, the release nose 35 of the shaft 29 engages at a forced guide surface 51 of the blocking spring 37, which surrounds a blocking recess 53 of the blocking spring 37. However, as soon as the release nose 35 engages in the blocking recess 53, the blocking spring 37 can engage behind the latch 23 in the manner explained due to its preload (see Figure 1A ).

[0093] In accordance with Figure 1B In the state, the blocking spring 37 occasionally still contacts the latch 23 laterally. However, once the latch 23 is fully returned to the locked position, the blocking spring 37 snaps into place. Figure 1A The blocking position shown is removed and engages again behind the latch 23 .

[0094] In this frame lock 57 of the prior art, an element separate from the shaft 29 and the unlocking cam 31 is therefore provided in the form of a blocking spring 37 in order to be able to protect the latch 23 in the locked position from movement against the preload and thus in particular from prying attempts using the so-called hammering method. In addition, the preload of the latch 23 into the locked position actually usually causes the latch 23 to engage into the latter when reaching the closed position engagement recess 15, but this assumes that the shaft 29 has been rotated far enough when reaching the closed position to release the latch 23. Therefore, before this sufficient rotation of the shaft 29, the user must manually hold the circular hoop 11 in the closed position to prevent the circular hoop 11 from moving back to the open position due to the preload of the tension spring 17.

[0095] The embodiments of the frame lock disclosed herein particularly address this problem, wherein one of these embodiments is Figures 2A to 3A shown. In this embodiment of the frame lock 57', the cam 59 and therefore the single component is used both to push the latch 65 preloaded into the locked position V into the unlocked position E against the preload, and to fix the latch 65 in the locked position V to prevent movement toward the locked position V. In addition, a hoop detector 67 is provided, which is configured to detect the closed position G of the circular hoop 61. Therein, the corresponding signal of the hoop detector 67 can be used by the control device 69 to control the cam 59 to fix the latch 65 in the locked position V, and, as a result, to fix the circular hoop 11 to prevent unwanted movement into the open position O. However, the basic design of the frame lock 57' may correspond to the basic design of the above-mentioned frame lock 57 of the prior art. Unless specified features are mentioned below. Therefore, the features of the above-mentioned frame lock 57 from the prior art related to the basic operating mode of the frame lock may also be used according to Figures 2A to 3A In particular, therefore, for example, it can also be provided that in the frame lock 57 ', its circular hoop 61 is preloaded into the open position O.

[0096] Figure 2A The frame lock 57 ′ is shown with the circular hoop 61 in the closed position G. In the closed position G, the circular hoop 61 is secured by a latch 65 configured as a flat metal sheet 93, wherein the latch 65 positioned in the locking position V engages in a closed position engagement recess 79 and thereby prevents the circular hoop 61 from rotating. The closed position engagement recess 79 may be formed directly in the circular hoop 61 or indirectly by one or more raised portions of the circular hoop 61.

[0097] from Figure 2A It can also be seen that the latch 65 has a concave circular groove 99 which faces the circular hoop 61 and engages around a convexly rounded portion 101 of the circular hoop 61 in the locking position V. The closed position engagement recess 79 is surrounded by a lateral guide portion 103 of the circular hoop 61.

[0098] The latch 65 also has a control opening 71 into which a control extension 85 of the cam 59 rotatable by the motor 63 engages. The control extension 85 projects from the control plate 91 of the cam 59 towards the latch 65 and can be driven by rotating the cam 59 to perform an eccentric rotational movement about the motor axis of rotation of the motor 63. This makes it possible to move the latch 65 in a straight line along a movement direction B, which is oriented radially with respect to the circular hoop 61 and perpendicular to the axis of rotation about which the rotational movement of the cam 59 is performed, by rotating the cam 59 according to the rotational movement of the cam 59 and the contour 73 of the control opening 71 formed by its outer boundary 75. In the embodiment shown here, the control plate 91 is pivotable about the axis of rotation of the cam 59 or of the motor 63 and the control extension 85 is arranged at a radial end of the control plate 91 relative to its pivotal movement.

[0099] In accordance with Figure 2A In the representation of , the circular hoop 61 is in the closed position G and the latch 65 is in the locked position V, in which the latch 65 engages in the closed position engagement recess 79. The latch 65 is preloaded by the compression spring 81 towards the locked position V, so that the latch 65 must move against this preload in order to be able to disengage the latch 65 from the closed position engagement recess 79. However, in order to fix the latch 65 in the locked position V, by appropriate control of the motor 63, the cam 59 is rotated into the blocking position S, in which the control extension 85 contacts the boundary 75 of the control opening 71 facing the circular hoop 61, thereby blocking the latch 65 from moving against the preload of the compression spring 81.

[0100] In order to enable an authorized user to lock the frame lock 57' and transfer the circular hoop 61 into Figure 2A In the closed position G shown, the frame lock 57' has a control device 69, which is configured to control the motor 63 and thereby drive the cam 59. In addition, in the frame lock 57' shown here, a radio receiver 45 is also provided, so that a closing command can be received, for example from a smartphone, according to which the frame lock 57' will be blocked and the circular hoop 61 will be transferred into the closed position G.

[0101] The control device 69 may be configured to respond to such a shutdown command and to Figure 2C Starting from the open position O shown in the figure, the motor 63 is first controlled to rotate the cam 59 into the Figure 2CThe illustrated release position F. During this rotation of the cam 59, the control extension 85 abuts against the boundary 75 of the control opening 71 facing away from the circular hoop 61, thereby pushing the latch 65 into the unlocked position E against the preload of the compression spring 81. In the unlocked position E, the latch 65 is disengaged from the open position engagement recess 77, wherein the latch 65 is engaged in the open position engagement recess 77 when the circular hoop 61 is in the open position O and the latch 65 is in the locked position V. This enables the user to move the circular hoop 61 toward or into the closed position G by means of the handle 19. As shown in FIG. Figure 1A and Figure 1B As shown, the movement towards the closed position G can in particular take place against a preload of the annular collar 61 towards the open position O, wherein this preload can be generated, for example, by a tension spring 17 .

[0102] After reaching the release position F, the control device 69 may be configured to then control the motor 63 to rotate the cam 59 into the preload position T. Figure 2B As shown in the figure, in this preloaded position T, the latch 65 is released to move against the preload of the compression spring 81. Figure 2B As shown, the preload position T enables the latch 65 to be pushed back against the preload, so that the latch 65 can slide along the circular hoop 61, for example, during the movement of the circular hoop 61 into the closed position G. Figure 2B As shown, the latch 65 contacts the guide portion 103 of the circular collar 61 during this sliding movement and surrounds the guide portion 103 on the outside with a corresponding centering portion 105 so as to be able to guide the rotational movement of the circular collar 61 into the closed position G.

[0103] However, when the cam 59 is rotated into the preloaded position T, the latch 65 is preloaded into the locked position V so that the latch 65 can snap directly into the locked position V, and once the circular hoop 61 reaches the closed position G, the latch 65 engages into the closed position engagement recess 79 (see FIG. Figure 2A ). At this point, as the cam 59 rotates into the preload position T, the circular hoop 61 can be secured from moving toward the open position O immediately upon reaching the closed position G without the user manually holding the circular hoop 61 in this position.

[0104] In addition, in the frame lock 57', the already mentioned hoop detector 67 is provided, which has a magnetic field sensor 97 and a permanent magnet 95, the permanent magnet 95 being arranged at the circular hoop 61, adjacent to the open position engagement recess 77, wherein another permanent magnet not visible in the figure may further be arranged adjacent to the closed position engagement recess 79. Due to the cooperation of the permanent magnet (not shown) and the magnetic field sensor 97, the hoop detector 67 can detect when the circular hoop 61 reaches the closed position G and report it to the control device 69. The control device 69 can be configured to control the motor 63 in response to the detection of the closed position G to rotate the cam 59 into the blocking position S, so as to thereby fix the latch 65 in the locked position V and block its movement towards the unlocked position E against the preload of the compression spring 81 (see Figure 2A ).

[0105] On the one hand, the frame lock 57' thus realizes an automatic function, i.e. the latch 65 can snap directly into the closed position engagement recess 79 when reaching the closed position G and thereby fix the circular hoop 61 to prevent it from moving into the open position O, wherein, on the other hand, a reliable fixation of the latch 65 in the locked position V can also be realized by the automatic rotation of the cam 59 into the blocking position S, so as to protect the frame lock 57' in particular against prying attempts using a hammering method. Since this fixation is realized by the engagement of the control extension 85 and, therefore, directly by the cam 59, unlike in the prior art, no separate element, such as a blocking spring 37, is required to block the latch 65 in the locked position V against unauthorized opening attempts.

[0106] from FIG. 2A to FIG. 2C It can also be seen that the release position F and the blocking position S of the cam 59 are diametrically opposite to each other with respect to the rotation of the cam 59, and the cam 59 can rotate 180 degrees between the release position F and the blocking position S. In addition, due to the profile 73 of the control opening 71, the rotation of the cam 59 is limited to the rotation between the release position F and the blocking position S, and is therefore limited to a rotation angle of 180 degrees. Therein, the cam 59 can be rotated from the blocking position S into the release position F along a first rotation direction D1, and from the release position F into the blocking position S along a direction D2 opposite to the first rotation direction D1. The corresponding limits of the rotational movement can also be defined in terms of technical control. When rotating from the blocking position S into the release position F and when rotating from the release position F into the blocking position S, the cam 59 thus passes through a preload position T, which can be reached in particular by rotating the cam 59 90 degrees from the blocking position S or the release position F.

[0107] In addition, in the frame lock 57', as described above, the permanent magnet 95 is arranged in the environment of the open position engagement recess 77 ( Figure 2B), so that the hoop detector 67 can also be configured to detect the open position O by means of the magnetic field sensor 97 detecting the permanent magnet 95 and to send a corresponding signal to the control device 69. The permanent magnet 95 not shown in the figure and the permanent magnets already mentioned can in particular be polarized differently for detecting the closed position G, so that based on the signal of the magnetic field sensor 97 it can be distinguished which permanent magnets are located in its environment. Therefore, the control device 69 can be configured to distinguish between the open position O and the closed position G based on the signal of the hoop detector 67.

[0108] For example, such a detection of the open position O can enable the control device 69 to check whether the circular collar 61 is actually moved towards the closed position G or moved into the closed position G as a result of the received closing command. However, if the circular collar 61 is not moved and remains in the open position O, the control device 69 can be configured to control the motor 63 to move the cam 59 into the blocking position S after a predetermined or predeterminable waiting time after the closing command. It can thereby be achieved that, for example, after an accidentally triggered closing command, the circular collar 61 is fixed in the open position O again to prevent an undesired movement of the circular collar 61.

[0109] In addition, the control device 69 can be configured to rotate the cam 59 into the preload position T only when the hoop detector 67 detects that the circular hoop 61 has moved out of the open position O and / or no longer sends a signal indicating the arrangement of the circular hoop 61 in the open position O after the cam 59 has been transferred into the release position F.

[0110] In addition, the control device 69 can also be configured to control the motor 63 to first move the cam 59 into the release position F, starting from the closed position G of the circular hoop 61, in response to an opening command specifically received at the radio receiver 45. The latch 65 can thereby be moved into the unlocked position E, and the circular hoop 61 can be released for movement toward the open position O. In particular, when the circular hoop 61 is released for such movement starting from the closed position G, the circular hoop 61 can directly move into the open position O due to the preload. The control device 69 can then be configured to control the motor 63 to rotate the cam 59 into the blocking position S in response to the detection of the open position O by the hoop detector 67, so as to fix the circular hoop 61 in the open position O again. The circular hoop 61 can also thereby be reliably fixed in the open position O by engaging the latch 65 into the open position engagement recess 77 and blocking the latch 65 in the locking position V.

[0111] Figure 3AThe design of the control opening 71 is shown with a preloading section 87 and a locking section 89. Compared to the locking section 89, the preloading section 87 has a greater extension in the direction of movement B of the latch 65, wherein the control extension 85 of the cam 59 is arranged in the preloading section 87 in the preloading position T, but in the locking section 89 in the blocking position S and the release position F (see FIG. 2A to FIG. 2C ). This design of the control opening 71 enables the control cam 85 to contact the corresponding opposite boundary 75 of the control opening 71 in the release position F and the blocking position S, thereby blocking the latch 65 in the locking position V, or resisting the preload of the compression spring 81 from pushing it into the unlocking position E, while the larger extension of the preload portion 87 enables the latch 65 to move relative to the control extension portion 85 when the cam 59 rotates into the preload position T, and the control extension portion 85 is arranged in the preload portion 87.

[0112] In addition, from Figure 2A and Figure 2C It can be seen that the blocking position S is defined by the position of the cam 59 in which the control extension 85 has a minimum radial spacing from the circular hoop 61 relative to the rotation of the circular hoop 61, while in the release position F, the control extension 85 of the cam 59 has a maximum radial spacing from the circular hoop 61 relative to the rotational movement that the cam 59 can perform. In the preload position T, the control extension 85 is positioned at an average radial spacing from the circular hoop 61 relative to the spacing in the blocking position S and the release position F. The frame lock 57 ′ may also include a potentiometer (not shown in the figure) connected to the motor shaft of the electric motor 63, and the control device 69 may be configured to determine the rotational position of the cam 59 based on the signal of the potentiometer, in particular, in order to enable the cam 59 to be intentionally rotated into the preload position T.

[0113] Description of Reference Numerals

[0114] 11 Circular Hoop

[0115] 13 Open position engagement recess

[0116] 15 Closed position engagement recess

[0117] 17 Extension spring

[0118] 19 Handle

[0119] 21 Closing direction

[0120] 23 Latch

[0121] 25 Compression spring

[0122] 27 recess

[0123] 29 Axis

[0124] 31 Unlock Cam

[0125] 33 Switch cam

[0126] 35 Release the nose

[0127] 37 Blocking spring

[0128] 39 Electric Motor

[0129] 41 Control Equipment

[0130] 43 Contact switch

[0131] 45 Radio Receiver

[0132] 47 Batteries

[0133] 49 Unlock direction

[0134] 51 Forced Guidance Surface

[0135] 53 blocking recess

[0136] 55 Rotation direction

[0137] 57 Frame Lock

[0138] 57' Frame Lock

[0139] 59 Cam

[0140] 61 Circular Hoop

[0141] 63 Electric Motor

[0142] 65 Latch

[0143] 67 Hoop Detector

[0144] 69 Control Equipment

[0145] 71 Control opening

[0146] 73 Profile

[0147] 75 Boundary

[0148] 77 Open position engagement recess

[0149] 79 Closed position engagement recess

[0150] 81 Compression spring

[0151] 85 Control extension

[0152] 87 Preload section

[0153] 89 Locking section

[0154] 91 Control Panel

[0155] 93 Metal Flakes

[0156] 95 Permanent magnet

[0157] 97 Magnetic Field Sensor

[0158] 99 concave circular groove

[0159] 101 The convex part of the earth

[0160] 103 Boot Section

[0161] 105 Centering recess

[0162] B Moving direction

[0163] D1 First rotation direction

[0164] D2 Second direction of rotation

[0165] E Unlock position

[0166] F Release position

[0167] G Closed position

[0168] O Open position

[0169] S Blocking position

[0170] T Preload position

[0171] V locked position

Claims

1. An electronic frame lock (57') for a bicycle, include: a circular hoop (61) rotatable between an open position and a closed position; Electric motor (63); a cam (59) drivable by the motor (33) to perform eccentric rotational movement about a rotation axis; a latch (65) movable between a locked position (V) and an unlocked position (E) in a straight line, wherein the straight line is perpendicular to the axis of rotation and radially oriented relative to the circular hoop (61), and wherein the latch (65) is preloaded towards the locked position (V); a hoop detector (67) configured to detect the closed position (G) of the circular hoop (61); and Control device (69), wherein the circular hoop (61) in the closed position (G) can be secured by the latch (65) in the locked position (V) to prevent movement toward the open position (O), and can be released by moving the latch (65) into the unlocked position (E) to move into the open position (O), wherein the cam (59) can be rotated into a blocking position (S), a preloading position (T) and a releasing position (F) by the motor (63), wherein the latch (65) has a control opening (71) into which the cam (59) engages, wherein the latch (65) can be driven by rotating the cam (59) and the contour (73) of the control opening (71) according to the rotational movement of the cam (59), Wherein, the latch (65): capable of being secured by the cam (59) against movement from the locked position (V) toward the unlocked position (E) by rotating the cam (59) into the blocking position (S), capable of being released by rotating the cam (59) into the preload position (T) to move against the preload toward the unlocked position (E), and capable of being moved into the unlocked position (E) by the cam (59) against the preload by rotating the cam (59) into the released position (F), wherein the control device (69) is configured to control the motor (63) to selectively rotate the cam (59) into the blocking position (S), the preload position (T) and the release position (F), and wherein the control device (69) is configured to control the motor (63) to rotate the cam (59) into the blocking position (S) in response to detection of the closed position (G) of the circular hoop (61) by the hoop detector (67).

2. The electronic frame lock (57') according to claim 1, in, The circular hoop (61) has a closed position engagement recess (79), Wherein, the latch (65) is configured to engage into the closed position engagement recess (79) in the locking position (V) when the circular hoop (61) is in the closed position (G), thereby fixing the circular hoop (61) to prevent movement into the open position (O).

3. The electronic frame lock (57') according to claim 1, in, The control device (69) is configured to, based on a received closing command, starting from the open position (O) of the annular hoop (61): First, the motor (63) is controlled to rotate the cam (59) into the release position (F), thereby moving the latch (65) into the unlock position (E); Then, controlling the motor (63) to rotate the cam (59) into the preload position (T); as well as The motor (63) is controlled to rotate the cam (59) into the blocking position (S) in response to detection of the closed position (G) of the circular hoop (61) by the hoop detector (67).

4. The electronic frame lock (57') according to claim 1, in, The cam (59) is rotatable about a motor rotation axis of the electric motor (63).

5. The electronic frame lock (57') according to claim 1, in, The electric motor (63) is arranged substantially tangentially to the circular hoop (61).

6. The electronic frame lock (57') according to claim 1, in, The cam (59) has a control extension (85) by means of which the cam (59) engages in the control opening (71).

7. The electronic frame lock (57') according to claim 6, in, The control opening (71) has a preloading portion (87) and a locking portion (89), wherein the preloading portion (87) has a first extension along the moving direction (B) of the latch (65), and the locking portion (89) has a second extension along the moving direction (B) of the latch (65), and the second extension is smaller than the first extension, wherein the control extension (85) of the cam (59) is arranged in the preloading portion (87) in the preloading position (T), and is arranged in the locking portion (89) in the release position (F) and the blocking position (S).

8. The electronic frame lock (57') according to claim 6, in, In the release position (F), the control extension (85) contacts the boundary (75) of the control opening (71) facing away from the circular hoop (61), and in the blocking position (S), the control extension (85) contacts the boundary (75) of the control opening (71) facing the circular hoop (61).

9. The electronic frame lock (57') according to claim 1, in, The latch (65) is configured as a flat metal sheet (93).

10. The electronic frame lock (57') according to claim 1, in, The circular hoop (61) is preloaded into the open position (O).

11. The electronic frame lock (57') according to claim 1, in, The hoop detector (67) is configured to detect the open position (O).

12. The electronic frame lock (57') according to claim 11, in, The control device (69) is configured to control the motor (63) to rotate the cam (59) into the preload position (T) only in response to a signal from the hoop detector (67) after the cam (59) rotates into the release position (F), the signal being representative of movement of the circular hoop (61) out of the open position (O).

13. The electronic frame lock (57') according to claim 11, in, The control device (69) is configured to, as a result of receiving the closing command, control the motor (63) to move the cam (59) into the blocking position (S) after a predetermined or predeterminable waiting time if the hoop detector (67) detects the open position (O) after the predetermined or predeterminable waiting time.

14. The electronic frame lock (57') according to claim 11, in, The control device (69) is configured to, based on a received opening command (G), starting from the closed position (G) of the annular hoop (61): First, the motor (63) is controlled to rotate the cam (59) into the release position (F), thereby moving the latch (65) into the unlock position (E); as well as The motor (63) is controlled to rotate the cam (59) into the blocking position (S) in response to detection of the open position (O) of the circular hoop (61) by the hoop detector (67).

15. The electronic frame lock (57') according to claim 1, in, The circular hoop (61) has an open position engagement recess (77), and wherein the latch (65) is configured to engage into the open position engagement recess (77) in the locking position (V) when the circular hoop (61) is in the open position (O), and thereby secure the circular hoop (61) to prevent movement into the closed position (G).

16. The electronic frame lock (57') according to claim 1, in, The cam (59) is rotatable from the release position (F) via the preload position (T) into the blocking position (S).

17. The electronic frame lock (57') according to claim 1, in, The motor (63) is configured only to move the cam (59) between the release position (F) and the blocking position (S).

18. The electronic frame lock (57') according to claim 1, in, The cam (59) is capable of rotating 180 degrees from the release position (F) to the blocking position (S), and rotating 180 degrees from the blocking position (S) to the release position (F).

19. The electronic frame lock (57') according to claim 1, in, The cam (59) is rotatable from the blocking position (S) into the releasing position (F) along a first rotational direction, and is rotatable from the releasing position (F) into the blocking position (S) along a second rotational direction opposite to the first rotational direction.

20. The electronic frame lock (57') according to claim 1, in, The hoop detector (67) includes at least one permanent magnet (95) and a stationary magnetic field sensor (97) located at the circular hoop (61).

Images