EP3995649A1 - Locking cylinder for a locking element - Google Patents

Abstract

The invention relates to a locking cylinder (1), in particular an electromechanical one, for a locking element, in particular a building door, the locking cylinder (1) comprising a driver (10). According to the invention, the locking cylinder (1) comprises an electric motor (11) in order to to turn the driver (10).

Description

The invention relates to a lock cylinder for a closure element. The lock cylinder includes a driver.

Lock cylinders with a driver are known. By means of the eccentric driver, for example, a bolt of a mortise lock of a building door can be retracted or extended. Here, the building door is unlocked or locked. Lock cylinders are also known in which the eccentric driver itself acts as a bolt. It is essential that a rotation of the driver brings about a change in the state of the closure element from a locked state to an unlocked state or vice versa.

the WO2011/022855 A1 discloses such an electromechanical lock cylinder. In this case, an outer knob, which is attached to an outer shaft, can be connected to the driver via an electromechanical clutch unit. The clutch unit assumes a first state in which the outer knob is connected to the driver if a user has authorization. In a second state of the clutch unit, the outer shaft is freely rotatable relative to the driver. The clutch unit includes an electro-mechanical actuator to establish the first state and the second state. In order to lock or unlock the building door starting from the first state, it is necessary for the user to be on site and to use the mechanical energy to turn the outside knob and thus the driver. This makes it impossible for the driver to be rotated when the authorized user is not on site.

It is therefore the object of the present invention to provide a lock cylinder, in particular an electromechanical lock cylinder, which enables the driver to be rotated when the authorized user is not on site.

Patent claim 1 solves this problem. Advantageous developments of the invention are specified in the dependent claims, the description and the figures.

According to the invention it is provided that the lock cylinder comprises an electric motor in order to rotate the driver.

Due to the fact that the lock cylinder according to the invention has an electric motor which is designed to rotate the driver, manual rotation of the driver can be dispensed with. This makes it possible to cause the driver to rotate without an authorized user being on site.

The lock cylinder according to the invention can be used in a closure element. The closure element can be designed as a furniture door, in particular as a safe door, as a window or as a building door. The closure element is particularly preferably designed as a building door.

The driver is preferably designed as an eccentric. The driver can be designed as a locking lug.

It may be that a rotation of the driver in a first direction is used to convert the closure element from an unlocked state to a locked state. It may be that a rotation of the driver in a second direction serves to convert the closure element from a locked to an unlocked state. The electric motor is designed in particular to rotate the driver in such a way that the closure element is transferred to the locked state. The electric motor is designed in particular to rotate the driver in such a way that the closure element is transferred to the unlocked state.

For example, the lock cylinder according to the invention can be used in a mortise lock. In this case, a rotation of the driver can cause the bolt of the mortise lock to move. So the rotation of the driver in a first direction z. B. an extension of the bolt and thus bringing about the locked state of the closure element. A rotation of the driver in a second direction can, for. B. bring about a retraction of the bolt and thus bringing about the unlocked state of the closure element.

Alternatively, the driver itself can act as a latch. So the rotation of the driver in a first direction z. B. cause the driver to assume a locked position. The rotation of the driver in a second direction z. B. cause the driver to assume an unlocked position.

The driver can assume a first position in which the closure element is in the locked state. The driver can assume a second position in which the closure element is in the unlocked state.

The electric motor may include a rotor and a stator.

It may be that the lock cylinder is designed as a double cylinder. In this case, the driver can be actuated from an outside and from an inside of the closure element.

It may be that the lock cylinder is designed as a half cylinder. In this case, the driver can be actuated from the outside of the closure element.

The key cylinder may include a key cylinder housing. For example, it can be a standardized lock cylinder housing. The lock cylinder housing can be inserted directly or indirectly into the closure element or attached to the closure element.

The lock cylinder may include a shaft. The shaft is rotatably mounted in particular in the lock cylinder housing.

It can be provided that the shaft is connected or can be connected to the driver.

It may be that, particularly in the case of a double cylinder, the shaft is designed to be continuous. Alternatively, in particular in the case of a double cylinder, the shaft can be divided into at least two shaft parts, in particular an outer shaft and an inner shaft. The shaft parts can be rotated independently of each other. The independent rotation of the shaft parts can be limited to predetermined states of the key cylinder.

In the case of a half cylinder, the shaft and the driver are rotatably mounted in the lock cylinder housing. The shaft and the driver can be rotated independently of each other. Independent turning may be limited to predetermined states of the key cylinder.

The electric motor preferably acts on the shaft or at least on a shaft part, in particular on the inner shaft. The driver, which is connected to the shaft or the shaft part, can be rotated by rotating the shaft or at least one shaft part, in particular the inner shaft, by the electric motor.

It can be provided that the lock cylinder includes an inner handle. The inner handle is intended to be connected in a rotationally fixed manner to the shaft, in particular to the continuous shaft or the inner shaft. The inner handle rotates with the shaft, in particular with the continuous shaft or the inner shaft.

The inner handle is preferably connected in a rotationally fixed manner to a first end of the shaft. At a second end of the shaft, which is opposite the first end of the shaft, an external handle can be connected to the shaft, in particular to the continuous shaft or to the external shaft, in a rotationally fixed manner. As an alternative to this, a key, in particular an electronic key, can be connected in a rotationally fixed manner to the shaft, in particular to the continuous shaft or to the outer shaft.

If the shaft is divided into an outer shaft and an inner shaft, the driver can be non-rotatably connected to the inner shaft.

The inside handle can be designed as an inside knob. The outside handle can be designed as an outside knob.

In the case of a half-cylinder, in particular a handle, preferably an outer handle, particularly preferably an outer knob, is connected to the shaft in a rotationally fixed manner. Alternatively, a key, in particular an electronic key, can be non-rotatably connected to the shaft.

The lock cylinder can include an electronic control unit. The electronic control unit serves in particular to control the electric motor. The control unit may include a processor. The control unit can include a memory, in particular a non-volatile memory. The control unit can activate the electric motor in order to convert the closure element into the locked state. The control unit can activate the electric motor in order to convert the closure element into the unlocked state.

The electronic control unit may include a timer. The control unit can use the timer to record a time or a period of time.

The control unit can be used to determine a user's authorization.

It may be that, at least in part, user authorization is a prerequisite for the control unit to control the electric motor in order to rotate the carrier.

The lock cylinder can include a detection unit to record data so that authorization of a user can be determined, in particular by the control unit. The detection unit can be designed as a transmitting and receiving unit, as a biometric sensor, as a keypad for entering a PIN and/or as a contact element for making electrical contact with a key, in particular an electronic key. The transmitting and receiving unit can be designed to communicate with a mobile unit, in particular a mobile phone or a card, by short-range communication, in particular RFID or Bluetooth Low Energy.

Due to the fact that the electric motor is designed according to the invention to rotate the driver, a lot of electrical energy is required.

The lock cylinder can include an electrical energy store, in particular an accumulator. The energy store can be used to supply the electric motor with electrical energy.

The lock cylinder advantageously has at least one generator. By means of the generator, the lock cylinder can convert mechanical energy into electrical energy, which can then be used to feed the electric motor.

The electrical energy store can be used to store the electrical energy generated by the generator.

The generator is preferably operatively connected to the shaft, in particular the continuous shaft or a shaft part. When the shaft, in particular the continuous shaft, a shaft part or the shaft of the half-cylinder is rotated manually, the energy store is charged by means of the generator. For example, with each manual rotation of the continuous shaft or the shaft of the half cylinder, the energy store can be charged by means of the generator. Alternatively, the energy store can be charged by means of the generator with each manual rotation of the shaft part that is operatively connected to the generator.

It is conceivable that when the driver rotates manually, energy is generated by means of the generator. When the driver rotates manually, the generator charges the energy store. Energy is particularly preferably always generated by means of the generator when the driver is rotated manually.

The lock cylinder may have a generator connected to the inner shaft and a generator connected to the outer shaft.

It can be provided that the electric motor can act as a generator. For this purpose, the rotor of the electric motor can be rotated when the driver and/or the shaft is rotated manually and thereby generate electrical energy by means of the non-rotatable stator.

The stator of the electric motor and/or the generator is preferably non-rotatably connected to the lock cylinder housing.

The rotor of the electric motor and/or the generator preferably rotates with the shaft. Here, a translation of the rotary movement is conceivable.

For example, the electric motor and/or the generator can be arranged in the lock cylinder housing. In this case, the stator can be fastened in the lock cylinder housing in a rotationally fixed manner. The rotor can rotate with the shaft, in particular with the continuous shaft, with a shaft part or with the shaft of the half-cylinder. Alternatively, the electric motor and/or the generator can be arranged in the handle. In this case, the stator can be fastened in a rotationally fixed manner on the outside of the lock cylinder housing. The rotor can rotate with the handle.

Thanks to the electric motor, the driver can be moved without the presence of a user. Provision is preferably made for the control unit to activate the electric motor as a function of a predetermined point in time or after a predetermined period of time, in particular in order to move the closure element into a locking state convict. The specified point in time or the specified period of time can be stored in the control unit.

The control unit can use the timer to determine the time. It is conceivable to store several different points in time in the control unit. For example, a separate time can be stored in the control unit depending on the day of the week. It is possible that a different time is stored in the control unit for a working day than for a non-working day. The control unit can, for example, always activate the electric motor at 5 p.m. Monday to Friday in order to transfer the closure element to the locking state.

The control unit can use the timer to determine the length of time. The period of time can be measured as a function of a predetermined event, for example a first transition of the closure element into the unlocked state during the day. Several time periods for different predetermined events can be stored in the control unit. The definition of the predetermined event can be stored in the control unit.

The electronic control unit can be connected at least indirectly to a long-distance communication network. The long-distance communication network can be a telecommunications network or the Internet. The control unit can receive a control command via the remote communication network. Based on the control command, the control unit controls the electric motor, in particular in order to transfer the closure element to the locked state. Thus, a user z. B. subsequently lock the locking element designed as a front door if the user has forgotten this when leaving the house.

It may be that a mobile unit, in particular a mobile phone, communicates with the lock cylinder via the long-distance communication network. The control unit can receive a control command, in particular for locking the closure element, from the mobile unit via the long-distance communication network. In particular, it is provided that the control unit first checks the authorization of the mobile unit, in particular the cell phone, to send such a control command. The authorization to send the control command via the long-distance communication network may differ from the on-site authorization to rotate the driver.

The lock cylinder can preferably be connected to a door status sensor. An electrical signal can be transmitted wirelessly or with a cable by means of the connection. The door status sensor is designed to detect whether the closure element is open or closed. For example, the door status sensor is designed as a Hall sensor.

Alternatively, the door status sensor can include a switch actuator that is moved when the closure element is closed, a switch of the door status sensor being actuated.

Provision can be made for the control unit to only activate the electric motor in order to bring the closure element into the locked state when the control unit has received a signal from the door state sensor that the closure element is closed. This prevents attempts being made to bring about the locked state of the closure element when the closure element is open. Here, a bolt can be extended or the driver can be transferred to the locking position. If the closure element is open, the extension of the bolt or the assumption of the locking position can prevent the closure element from being able to be closed. This should be avoided for safety reasons. In particular with a fire protection door as a locking element, it must always be ensured that the fire protection door can be closed.

If the control unit knows that the closure element is open, the control unit will refrain from activating the electric motor in order to bring the closure element into the locked state, in particular although the point in time or the end of the time period has been reached to bring about the locked state or although there is a control command to transfer to the locked state.

It is conceivable that the lock cylinder sends a message to the mobile unit that the lock cylinder is prevented from driving the electric motor because of the open closure element in order to convert the closure element into the locked state.

It may be that the control unit catches up on activation of the electric motor in order to bring the closure element into the locked state as soon as the control unit has received a signal from the door state sensor that the closure element is closed.

The lock cylinder preferably includes an electric actuator for moving a coupling element or a blocking element. The electric actuator can, for. B. be designed as a solenoid or as an electric motor.

The electric actuator is used to create an electromechanical condition that allows the shaft, in particular the outer shaft, the continuous shaft or the shaft of the half-cylinder, to be rotated manually from the outside and thereby rotate the driver. It is conceivable that the creation of the condition depends on the user's authorization. The user's permission to create the condition may differ from the user's authorization to activate the electric motor.

The lock cylinder can include a clutch unit. The clutch unit can include the electric actuator.

The lock cylinder can include a blocking unit. The blocking unit can include the electric actuator.

The electric actuator and the electric motor are preferably designed separately from one another, in particular can be activated separately from one another. In other words, the lock cylinder according to the invention preferably comprises at least two electromechanically operating devices, namely the electric motor and the electric actuator, in order to be able to convert the closure element into the unlocked state or the locked state. Here, the electric motor causes a corresponding rotation of the driver without manual help. The electric actuator, on the other hand, only creates the prerequisite for manual rotation of the driver at least from the outside, in particular by means of the outside handle or the key. If the electric actuator is designed as an electric motor, the electric actuator preferably includes a rotor and a stator, and the electric motor includes another rotor and another stator.

It may be that the control unit is designed to control the actuator.

In particular, the electric actuator can remain in a state for an access period of time, which allows the authorized user to change the state of the closure element. The access time can be a few seconds.

The actuator is preferably located in the lock cylinder housing and/or in the shaft.

Operating the electric actuator requires less energy than operating the electric motor. It may therefore be that the lock cylinder is designed such that the electric actuator is actuated when the desired state of the locking element can be brought about both by actuating the electric actuator and manual rotation of the shaft and by actuating the electric motor.

Such a case can occur in particular when an authorized user is standing in front of the closure element. It may be that the lock cylinder includes a transmitter and receiver unit for wireless short-range communication with the mobile unit. The mobile unit can e.g. B. be designed as a card or mobile phone. The short-range communication can e.g. B. by means of RFID or Bluetooth Low Energy (BLE). The sending and receiving unit serves as a recording unit to data obtained, which enables the control unit to determine the authorization of a user.

If the lock cylinder detects a mobile unit with access authorization in the short-range communication area, it is provided in particular that the control unit will activate the electric actuator. The control unit does not activate the electric motor.

The lock cylinder can include an interface for receiving a first piece of information and a second piece of information from a mobile unit. For example, the interface can be designed as the sending and receiving unit.

The lock cylinder is preferably designed to activate the actuator after receiving the first information and to activate the electric motor after receiving the second information. It is thus possible for the lock cylinder to be able to receive different control commands, in particular a first control command for activating the actuator and a second control command for activating the electric motor.

It may be that upon receipt of the second piece of information, the lock cylinder checks whether the mobile unit is in the short-range communication area and, in this case, refuses to activate the electric motor.

For example, the mobile unit can be designed as a cell phone. At least two options can be displayed on the mobile phone, a first option, upon selection of which the first information is sent to the lock cylinder, and a second option, upon selection of which the second information is sent to the lock cylinder. The selection of the option can e.g. B. done by pressing a button on the mobile phone. It is conceivable that when the mobile unit is in the short-range communication area, the option to select the transmission of the second information is deactivated. When the mobile unit communicates with the lock cylinder via the long-distance communication network, the options for selecting to send the first information and the second information may be activated. The control unit can refrain from activating the electric motor if the control unit has authorization from the user. For example, the registration unit already has authorized data, e.g. B. a PIN code, a finger scan or the like recorded. This applies in particular if the user has to be on site so that the registration unit can record the authorized data.

• Aktivierung des Elektromotors zu zumindest einem festgelegten Zeitpunkt
• Aktivierung des Elektromotors am Ende zumindest einer festgelegten Zeitspanne
• Aktivierung des Elektromotors bei Empfang eines Steuerbefehls mittels des Fernkom munikationsnetzwerks.

It may be that the activation of the electric motor is limited to at least one of the following cases, preferably to several of the following cases, particularly preferably to all of the following cases:

• Activation of the electric motor at least at a specified time
• Activation of the electric motor at the end of at least a specified period of time
• Activation of the electric motor upon receipt of a control command via the remote communication network.

Instead of or in addition to cases in which the control unit fails to activate the electric motor because the activation of the actuator represents an energetically favorable alternative, it is conceivable to slow down the state change of the closure element by means of the electric motor, so that the authorized user for this reason prefers to use the actuator to change the state of the closure element when the user is on site.

For example, the authorized user is in a hurry to enter the house. If the user selects the option "unlocking the front door with the electric motor" on the mobile phone he is carrying, the user has to wait a correspondingly long time until the front door is unlocked due to the slow unlocking by means of the electric motor. If the user selects the option “unlock the front door with the actuator” on the mobile phone he is carrying, the user can get into the house more quickly by quickly changing the coupling or locking unit and then turning it manually.

It may be that a change in the state of the lock cylinder brought about by the actuator is at least one second faster, preferably at least two seconds, particularly preferably at least five seconds faster than a movement of the driver by means of the electric motor in the uninstalled state from the first position to the second position or the opposite. An upper limit can be one minute, for example.

For this reason in particular, it can be provided that the electric motor rotates the driver in the uninstalled state of the lock cylinder at an angular speed of at most 100°/s, preferably at most 50°/s, particularly preferably at most 20°/s. A lower limit can be 1°/s, for example.

A slow rotation of the driver by the electric motor has the advantage that an electric motor with a low electrical output can be used. As a result, in particular the installation space of the electric motor can be kept small. Particularly preferably, it can be provided that the electric motor is arranged in the lock cylinder housing, with the lock cylinder housing corresponding to the Euro profile.

In the following, the different possibilities are discussed as to how the electrical actuator can be used to create the prerequisite for manual rotation of the driver, at least from the outside.

On the one hand, the actuator can be part of the electromechanical clutch unit. The clutch unit can include a clutch element.

In a first state of the electromechanical clutch unit, the shaft, in particular the continuous shaft or the outer shaft, is operatively connected to the driver, so that actuation of the shaft, in particular the continuous shaft or the outer shaft, causes the driver to rotate. In a second state of the electromechanical clutch unit, the shaft, in particular the continuous shaft or the outer shaft, can be rotated independently of the driver.

A state change of the lock cylinder brought about by the actuator can correspond to a transfer of the clutch unit from the second state to the first state.

In the first state, the coupling element can be operatively connected to the driver. In the second state, the coupling element and the driver can be ineffective in relation to one another.

The shaft can in particular be designed as a continuous shaft. An advantage of this arrangement is that energy is always generated by means of the generator when the shaft rotates. Both in the first and in the second state of the clutch unit, energy is generated by means of the generator by means of a manual rotation of the shaft, in particular also from the outside by means of the external handle or a key.

A further advantage is that, in particular in the second state of the clutch unit, electrical energy can be generated by the generator by rotating the shaft without the driver being moved.

Alternatively, the shaft is divided into an outer shaft and an inner shaft.

The inner shaft is preferably always connected to the driver. One advantage of this arrangement is that the driver can always be rotated by means of the inner handle, independently of an access authorization, and a change in the status of the closure element can thus be brought about.

The outer shaft is connected to the driver in a first state of the clutch unit and can be rotated independently of the driver in a second state of the clutch unit. In both the first and second states of the clutch unit, manual rotation of one of the shaft parts generates power via the generator. In the first state, manual rotation of the other shaft part generates energy by means of the generator. In particular, only in the first state does a manual rotation of the other shaft part generate energy by means of the generator.

For example, one of the shaft parts corresponds to the inner shaft and the generator is connected to the inner shaft. As a result, energy can always be generated by manually turning the inner shaft, regardless of the state of the clutch unit. Energy can only be generated by manually turning the outer shaft in the first state of the clutch unit. This is particularly advantageous when the electric motor also serves as a generator.

Alternatively, one of the shaft parts corresponds to the outer shaft and the generator is connected to the outer shaft. As a result, energy can always be generated by manually rotating the outer shaft, regardless of the state of the clutch unit. As a result, even when the energy store is discharged, it is possible to actuate the actuator or the electric motor by initially generating energy by rotating the outer shaft. Energy can only be generated by manually turning the inner shaft in the first state of the clutch unit. In this case, the electric motor and the generator are preferably designed separately.

In a further alternative, a first generator is operatively connected to the inner shaft and a second generator is operatively connected to the outer shaft. The first generator can also serve as an electric motor.

Depending on at least one predetermined first time of day, the control unit can convert the clutch unit from the first state to the second state. Additionally or alternatively, the control unit can convert the clutch unit from the second state to the first state as a function of at least one predetermined second time of day or a predetermined coupling time period. For example, the lock cylinder is in the first state during office opening hours. In particular, the coupling period is longer than the access period. For example, the coupling period is at least one hour. This makes it possible to also generate energy from an actuation of the other shaft part by means of the generator.

The at least one predetermined first or second time of day can be stored in the control unit. The first and/or second time of day may vary for different days of the week/holidays.

It is also conceivable to provide a clutch period of time, in particular to store it in an adjustable manner in the control unit. In particular, at the end of a clutch period, the clutch unit is transferred from the first state to the second state. An event at which the clutch time period begins can be stored in the control unit.

In the case of a half-cylinder, the generator is arranged on the shaft. This generates energy with every manual rotation of the shaft. In order to move the driver by means of the electric motor, the clutch unit must first be transferred to the first state.

The electronic control unit can refrain from activating the electric motor, in particular in order to convert the closure element into the unlocked state when the electromechanical clutch unit is in the first state. This also serves to save energy. In this case, anyone can achieve the unlocked state in particular by manually rotating the shaft.

The electronic control unit can refrain from activating the electric motor, in particular in order to convert the closure element into the unlocked state, if the current time is within a predetermined time interval. The control unit can display the current time e.g. B. determine by means of the timer. The time interval can be stored in the control unit. This can e.g. B. done to the predetermined time interval, z. B. at night to prevent the establishment of an unlocked state over the remote communication network.

Alternatively, the actuator can be part of the electromechanical blocking unit. The locking unit may include a locking member. The locking element can prevent rotation of the shaft or a shaft part in a first position and release it in a second position.

The outer shaft or the shaft of the half cylinder can be brought into a locked state and into an unlocked state. In the locked state, in particular, rotation of the outer shaft or the shaft of the half cylinder is prevented. In the unlocked state, the outer shaft or the shaft of the half cylinder is allowed to rotate. In particular, in the locked state, the locking element engages in the lock cylinder housing. In the unlocked state, the locking member is detachable from the lock cylinder housing.

A state change of the lock cylinder brought about by means of the actuator can correspond to a transfer of the outer shaft or the shaft of the half cylinder from the locked state to the unlocked state.

In the case of a double cylinder in particular, the outer shaft is decoupled from the driver in the locked state. In the unlocked state, the outer shaft is operatively connected to the driver.

It is preferably provided that the inner shaft is always connected to the driver and is always rotatable. Alternatively, the inner shaft can be decoupled from the driver when the outer shaft is in the unlocked state.

Provision is preferably made for the outer shaft to be operatively connected to the electric motor and/or the generator in the unlocked state. This allows energy to be generated by the generator when the outer shaft is actuated.

In the locked state, in particular, the outer shaft is decoupled from the electric motor and/or the generator. This enables the driver to be rotated by the electric motor despite the outer shaft being fixed. This additionally or alternatively enables electrical energy to be generated by the generator by rotating the inner shaft.

In the case of a half-cylinder, the generator is preferably arranged on the shaft. In order to generate energy, the shaft must first be brought into the unlocked state. In order to move the driver using the electric motor, the shaft must first be transferred to the unlocked state.

It may be that the outer shaft or the shaft of the half cylinder is designed to be actuated with a key or the outer handle.

Provision can be made for the blocking unit to be arranged in the outer shaft or the shaft of the half-cylinder.

It is preferably provided that the control unit refrains from activating the electric motor in order to bring the locking element into an unlocking state when a key is inserted in the outer shaft or the shaft of the half cylinder and the outer shaft or the shaft of the half cylinder is either in the unlocked state or can be transferred to the unlocked state. This is particularly the case if the key includes access authorization. This can save energy.

The electronic control unit can refrain from driving the electric motor in order to bring the locking element into the unlocked state if the current time is within a predetermined time interval. The control unit can display the current time e.g. B. determine by means of the timer. The time interval can be stored in the control unit. This can e.g. B. done to the predetermined time interval, z. B. at night, to prevent the production of an unlocked state via the long-distance communication network. Both in the presence of the clutch unit and in the presence of a blocking unit, it can be provided that if the charge of the energy store falls below a threshold value, the electronic control unit refrains from driving the electric motor , in order to convert the closure element into the unlocked or locked state. It is conceivable that in this case a message about this is sent to the mobile unit.

• Fig. 1 einen erfindungsgemäßen Schließzylinder gemäß einem ersten Ausführungsbeispiel,
• Fig. 2 einen erfindungsgemäßen Schließzylinder gemäße einem zweiten Ausführungsbeispiel,
• Fig. 3 einen erfindungsgemäßen Schließzylinder gemäße einem dritten Ausführungsbeispiel,
• Fig. 4 einen erfindungsgemäßen Schließzylinder gemäße einem vierten Ausführungsbeispiel,
• Fig. 5 ein Detail des ersten Ausführungsbeispiels,
• Fig. 6 ein Detail des zweiten, dritten und vierten Ausführungsbeispiels, und
• Fig. 7 eine Abwandlung des ersten Ausführungsbeispiels des erfindungsgemäßen Schließzylinders.

The invention is explained in more detail below using exemplary embodiments. Technical features with the same function are provided with identical reference symbols in the figures. Show it:

• 1 a lock cylinder according to the invention according to a first embodiment,
• 2 a lock cylinder according to the invention according to a second embodiment,
• 3 a lock cylinder according to the invention according to a third embodiment,
• 4 a lock cylinder according to the invention according to a fourth embodiment,
• figure 5 a detail of the first embodiment,
• 6 a detail of the second, third and fourth embodiment, and
• 7 a modification of the first embodiment of the lock cylinder according to the invention.

In figure 1 an electromechanical lock cylinder 1 according to the invention is shown. The lock cylinder 1 has a lock cylinder housing 12 with a continuous shaft 50 mounted therein. An outer knob 17 and an inner knob 13 are fastened to the shaft 50 in a rotationally fixed manner.

The lock cylinder 1 has an eccentric driver 10 . The driver 10 is used to move a bolt of a lock. Here, a closure element, in particular a building door, can be transferred from an unlocked state to a locked state by rotating the driver 10 in a first direction. The closure element can be transferred from a locked state into an unlocked state by rotating the driver 10 in a second direction.

The lock cylinder 1 includes a coupling unit 20. The coupling unit 20 includes an electromechanical actuator 22 and a coupling element 21. The coupling element 21 can be switched between a coupling position, not shown, in which the coupling element 21 engages in the driver 10, and an in figure 1 shown uncoupling position, in which the coupling element 21 is spaced from the driver 10, are moved by the actuator 22. If the coupling element 21 is in the coupling position, then the coupling unit 20 is in a first state. In the first state, the shaft 50 and thus the outer and inner knobs 17, 13 are connected to the driver 10 in a rotationally fixed manner. The coupling element 21 is in the Uncoupling position, the coupling unit 20 is in a second state in which the shaft 50 can be rotated without rotating the driver 10 .

In order for the actuator 22 to move the coupling element 21 and thus produce the first state of the coupling unit 20, a user must identify himself as authorized. For this purpose, the inner knob 13 and the outer knob 17 each have a detection unit. The detection unit is designed as a transmitting and receiving unit 19 . The transmitting and receiving unit 19 can communicate with a mobile unit 30, for example a mobile phone or a card, via short-range wireless communication, for example Bluetooth Low Energy or RFID. Alternatively and not shown, the detection units can be designed as a PIN code input or a biometric sensor.

The lock cylinder 1 has a control unit 16 which, on the basis of the data recorded by the recording unit 19 , determines whether the user is authorized and controls the actuator 22 in order to produce the first state of the clutch unit 20 .

According to the invention, the lock cylinder 1 includes one in the Figures 1 to 4 Electric motor 11 shown only schematically. The electric motor 11 is designed to rotate the driver 10. If the driver 10 is to be rotated by the electric motor 11, the control unit 16 will first convert the clutch unit 20 into the first state. The electric motor 11 according to the invention makes it possible to change the state of the closure element without an authorized user being on site.

In this case, it is provided in particular that the electric motor 11 rotates the driver 10 in the first direction at a predetermined point in time stored in an adjustable manner in the control unit 16 and thus locks the closure element. For example, the electric motor 11 can always lock the closure element at 10 o'clock in the evening.

Additionally or alternatively, at the end of a period of time, the electric motor 11 can rotate the driver 10 in the first direction and thus lock the closure element. The period of time can depend on a predetermined event, e.g. B. the first determination of an authorized user in a day. The event and the period of time can be stored in the control unit 16 so that they can be changed.

The stored point in time, the period of time and/or the specified event can be changed using the mobile unit 30 . For example, the control unit 16 can first determine an authorization of the mobile unit 30 and then receive and store a changed point in time, a changed time period or a changed predetermined event.

Additionally or alternatively, the control unit 16 can be connected to a remote communication network, e.g. B. the Internet to be connected. The connection to the Internet can, for example, wirelessly via a communication device, not shown, z. B. communicated via WLAN, take place. If the authorized mobile unit 30 sends a control command to the control unit 16 via the long-distance communication network, the control unit 16 can control the electric motor 11 in order to lock the locking element. For example, the authorized user forgot to lock the building door when leaving the house and can catch up on this using the mobile phone 30 from the workplace.

The lock cylinder 1 includes an electrical energy store 15, in particular a rechargeable battery or capacitor. The energy store 15 serves to provide electrical energy for the operation of the actuator 22 and the electric motor 11 .

In figure 1 the electric motor 11 is arranged in the lock cylinder housing 12 . The electric motor 11 and thus the lock cylinder 1 are thus made small. Due to the small structural size, it is possible to use the lock cylinder according to the invention in a variety of ways.

The electric motor 11 takes quite a long time to rotate the driver 10 . For example, the angular velocity is at most 100°/s, preferably at most 50°/s, particularly preferably at most 20°/s in the uninstalled state. When installed, the speed will usually be further reduced. The low rotational speed of the driver 10 serves to save energy. A user who wants to unlock or lock the locking element on site will not wait for the electric motor 11 to rotate the driver 10, but will, when the clutch unit 20 is in the first state, by manually rotating the outer or inner knob 17, 13 set the desired state of the closure element.

Additionally or alternatively, the lock cylinder 1 can include a generator 14 . Each manual rotation of the shaft 50 drives the generator 14. This generates electrical energy, which is stored in the energy store 15. This makes it possible to charge the energy store 15 seldom or not at all using an external energy source or to replace the energy store 15 .

In a preferred embodiment, the electric motor 11 also serves as a generator 14. This is in the Figures 1, 2 and 4 represented by a common symbol.

In the Figures 5 and 6 Possible arrangements of an electric motor 11 in a lock cylinder 1 according to the invention are shown. Here, only a section of the lock cylinder 1 according to the invention is shown.

The electric motor 11 comprises a stator 40 and a rotor 41 in each case. The stator 40 is firmly connected to the lock cylinder housing 12 . The rotor 41 is rotatably mounted in or on the stator 40 . The rotor 41 is rotatably connected to the shaft 50 via a gear 42 .

If the electric motor 11 is to rotate the driver 10 , the control unit 16 controls the electric motor 11 so that the rotor 41 rotates with the electrical energy of the energy store 15 . This rotates the gear 42, the shaft 50 and, in the first state of the clutch unit 20, the driver 10.

The electric motor 11 serves as a generator 14. If the outer or inner knob 17, 13 is turned manually, the rotor 41 turns in or on the stator 40. The generator 14 generates electrical energy, which is stored in the energy store 15.

As already to figure 1 explained and in figure 5 shown, the electric motor 11 can be arranged in the lock cylinder housing 12 . For this purpose, the lock cylinder housing 12 includes a recess 43. The stator 40 is attached to the recess 43.

On the other hand, the electric motor 11 can be arranged in a knob, in particular in the inner knob 13, as shown in FIG figure 6 shown. The stator 40 is fixed to the key cylinder housing 12 . In figure 5 For this purpose, a fastening plate 44 is fastened to the lock cylinder housing 12, which carries the stator 40. The knob 13, 17 is connected in a torque-proof manner to the shaft 50, which is operatively connected to the rotor 41 arranged in the knob 13, 17. This arrangement corresponds to the arrangement of the electric motor 11 in FIG figures 2 and 4 .

The control unit 16 refrains from activating the electric motor 11 if the control unit has knowledge from the detection unit 19 that an authorized user is on site. For example, this is the case when the control unit is aware of a mobile unit 30, 31 with access authorization in the short-range communication area. Rather, the control unit 16 will limit itself to controlling the actuator 22 in order to enable the driver 10 to be rotated manually. This saves energy.

Furthermore, the control unit 16 is designed to switch the clutch unit 20 from the second state to the first state as a function of at least one predetermined first time of day. The control unit 16 can convert the clutch unit 20 from the first state to the second state as a function of at least one predetermined second time of day or a predetermined coupling time period. The times of day or coupling time periods can be stored in the control unit 16 in an adjustable manner be. The first time of day, the second time of day, and/or the coupling time period can be changed via the mobile unit 30 . For example, the control unit 16 can first determine an authorization of the mobile unit 30 and then receive and store a changed point in time, a changed time period or a changed predetermined event. This makes it possible for the clutch unit 20, z. B. during office hours, in the first state. The users will manually operate the knobs 13, 17 to change the state of the shutter and will not use the electric motor 11. This can save energy.

The transmitting and receiving unit 19 and/or the communication device acts as an interface in order to receive information, in particular a control command, from the mobile unit 30 . This can be either a first control command for activating actuator 22 or a second control command for activating electric motor 11 . If the mobile unit 30 is in the vicinity of the lock cylinder, for which there is authorization, then the possibility of generating the second control command can be deactivated. For example, a button on the mobile unit 30 for generating the second control command can be deactivated. This forces the user to activate the actuator 22 and manually change the state of the closure member.

The lock cylinder 1 is connected to a door sensor, not shown. The door sensor detects whether the locking element is closed or open. In the open state of the closure element, the control unit 16 refrains from activating the electric motor 11 in order to convert the closure element into the locked state, although a corresponding point in time, a corresponding period of time or a corresponding control command is present. In this way, unsafe door states can be avoided. The control unit 16 sends an omission message to the mobile unit 30.

In the figures 2 and 3 are alternative embodiments of the lock cylinder 1 from figure 1 shown. Unless stated below, the exemplary embodiments correspond to figure 2 and 3 the embodiment of figure 1 . In the figures 2 and 3 the shaft 50 is divided into an outer shaft 51 and an inner shaft 52. The inner shaft 52 is always connected to the driver 10 in a rotationally fixed manner. This has the advantage that the status of the closure element can always be changed from the inside without the user having to show authorization. A detection unit 19 , which can be designed as a transmitting and receiving unit, is therefore only provided in the outer knob 17 .

In the first state, the clutch unit 20 connects the outer shaft 51 and the inner shaft 52 to one another. Here is the coupling element 21 in a Clutch position and engaged with the inner shaft 52. In figure 2 the second state of the clutch unit 20 is shown. In this case, the coupling element 21 is disengaged from the inner shaft 52. As a result, a rotation of the outer knob 17 is not transmitted to the driver 10. Because the electric motor 11 acts on the inner shaft 52 , the driver 10 can always be rotated by the electric motor 11 regardless of the state of the clutch unit 20 . It is not necessary to first convert the clutch unit 20 into the first state in order to rotate the driver 10 by means of the electric motor 11 .

A manual rotation of the inner knob 13 leads to the energy store 15 being charged by the generator 14. A manual rotation of the outer knob 17 leads to the energy store 15 being charged by the generator 14 in the first state of the clutch unit 20. In the second clutch state of the clutch unit 20 are decoupled in the second state of the generator 14 and the outer knob 17 so that a rotation of the outer knob 17 generates no electrical energy.

So that a rotation of the outer shaft 51 in the second state of the clutch unit 20 operates a generator 14 and thus generates electrical energy, is in the embodiment figure 3 another generator 14a is provided, the rotor 41 of which is operatively connected to the outer shaft 51 . The stator 40 is fixed in the lock cylinder housing 12 . Another difference of the embodiment of figure 3 to the embodiment of figure 2 It can be seen that the generator 14 and the electric motor 11 are designed separately in the inner knob 13 . Different to figure 6 Therefore, both a stator 40 for the electric motor 11 and a further stator for the generator 14 are attached to the attachment plate 44. Both a rotor 41 of the electric motor 11 and a rotor 41 for the generator 14 are operatively connected to the transmission 42 .

In the embodiment of figure 3 Furthermore, the outer knob 17 has been replaced by a keyhole, in which contact elements 19 are provided as a detection unit. The mobile unit 31 is designed as a key. The control unit 16 can receive electronic data from the key 31 via the contact element 19 in order to determine whether the user is authorized. The outer shaft 51 can be rotated manually when a key 31 is inserted.

Many variations of the first three exemplary embodiments are conceivable. Thus, in the first exemplary embodiment, the electric motor 11, which acts as a generator 14, can be arranged in the lock cylinder housing 12 or in the outer knob 17. The electric motor 11 and the generator 14 can be designed separately from one another. The electric motor 11 and the separately formed generator 14 can be arranged in one of the knobs 13, 17 or in the lock cylinder housing 12. Instead of the outer knob 17 and/or the Inside knob 13, a keyhole with a detection unit for detecting data of the key 31 is conceivable.

In the second exemplary embodiment, the outer knob 17 can be replaced by a keyhole with a detection unit for detecting data from the key 31 . An additional generator 14a rotating with the outer shaft 51 may be provided. The electric motor 11, which also acts as a generator 14, can be arranged in the lock cylinder housing 12 and act on the inner shaft 52. The electric motor 11 and the generator 14 can be designed separately from one another.

In the third exemplary embodiment, the keyhole can be replaced by an outside knob 17 with a transmitting and receiving unit 19 as a detection unit. The additional generator 14a can be omitted. The electric motor 11 can be arranged in the lock cylinder housing 12 and can act on the inner shaft 52 . The electric motor 11 can serve as a generator 14 at the same time.

In figure 4 a fourth exemplary embodiment of the lock cylinder 1 according to the invention is shown. Below are the differences figure 3 shown. For the rest, the lock cylinder corresponds to the figure 4 the lock cylinder figure 3 .

Instead of the clutch unit 20, a locking unit 24 is provided in the fourth embodiment. The blocking unit 24 includes an electromechanical actuator 22 in order to move a blocking element 23 . in a figure 4 shown locking position of the locking element 23, the locking element 23 engages in the outer shaft 51 and thus prevents rotation of the outer shaft 51. The outer shaft 51 is in a locked state. In a non-illustrated unlocking position of the locking element 23, the locking element 23 is not operatively connected to the outer shaft 51, so that the outer shaft 51 can rotate. The outer shaft 51 is in an unlocked state. Optionally, in addition to the blocking element 23, tumbler pins can be provided which are mechanically coded.

In the locked state of the outer shaft 51, the inner shaft 52 and the outer shaft 51 are decoupled from each other. As a result, the driver 10 can always be moved by rotating the inner shaft 52 . The electric motor 11 acts on the inner shaft 52. The electric motor 11 can, as in figure 4 shown, be arranged in the inner knob 13 . Alternatively, the electric motor 11 is arranged in the lock cylinder housing 12 .

When an authorized user inserts the key 31, the actuator 22 is activated in such a way that the actuator 22 enables the blocking element 23 to move into the unlocked position. At the same time by means of the inserted key 31 a connection of Outer shaft 51 made with the inner shaft 52 so that the driver 10 is rotatable by turning the key.

The electric motor 11 also serves as a generator 14. Each manual rotation of the inner knob 13 and each manual rotation of the outer shaft 51 in the unlocked state with the key 31 inserted serves to generate energy through the generator 14.

Alternatively and not shown, a connection is made between the outer shaft 51 and the driver 10 by means of the inserted key, with the inner shaft 52 being decoupled from the driver 10 . In this case, the driver 10 cannot be rotated by means of the inner knob 52 when a key 31 is inserted. Energy is not generated by means of the generator 14 when a key 31 is inserted.

A further generator 14a, not shown, can be operatively connected to the outer shaft 51 and can be used to generate electrical energy when the key 31 is inserted.

In an alternative that is not shown, the electromechanical blocking unit 24 is missing. In this case, the blocking of the outer shaft 51 is caused by mechanical tumbler pins. The key 31 can release the blocking by means of a mechanical coding and convert the outer shaft 51 into the unlocked state when the key 31 is inserted.

In figure 7 another lock cylinder 1 according to the invention is shown. In the following, the deviations from the embodiment of the lock cylinder 1 of figure 1 described. Otherwise, lock cylinder 1 corresponds to figure 7 the lock cylinder figure 1 .

The lock cylinder 1 of figure 7 is designed as a half cylinder. It is therefore not possible to rotate the driver 10 from an inside of the closure element. Rather, a shaft 50 is provided which can be actuated by the outer knob 17 . As in the first embodiment of the figure 1 Each manual rotation of the shaft 50 results in energy being generated by the generator 14. If the driver 10 is to be rotated by means of the electric motor 11, the clutch unit 20 must first be transferred to the first state.

Instead of the clutch unit 20, a locking unit 24 in the embodiment of figure 7 be provided (not shown). In this case, the shaft 50 is always connected to the driver 10 . In order to rotate the shaft 50 in a motorized manner by means of the electric motor 11, the shaft 50 must first be transferred to the unlocked state. In order to generate energy by means of the generator 14, the shaft 50 must also first be transferred to the unlocked state.

Claims (15)

Locking cylinder (1) for a locking element, in particular a building door, the locking cylinder (1) comprising a driver (10),
characterized in that the lock cylinder (1) comprises an electric motor (11) to rotate the driver (10). Lock cylinder (1) according to claim 1, wherein the lock cylinder (1) comprises at least one generator (14) and an electrical energy store (15), the energy store being able to be charged by means of the generator (14), the electric motor (11) in particular serving as a generator (14) works. Lock cylinder (1) according to claim 1 or 2, the lock cylinder (1) comprises a shaft (50), wherein the energy store (15) upon manual rotation of the shaft (50) or a shaft part (51, 52) of the shaft (50) is loaded by means of the generator (14). Lock cylinder (1) according to one of the preceding claims, wherein the lock cylinder (1) comprises an electronic control unit (16), wherein the electronic control unit (16) comprises a timer, the control unit (16) depending on at least one predetermined point in time or after drives the electric motor (11) for at least a predetermined period of time in order to convert the closure element into a locking state. Lock cylinder (1) according to one of the preceding claims, wherein the electronic control unit (16) can be connected at least indirectly to a long-distance communication network, wherein the control unit (16) can receive a control command via the long-distance communication network, the control unit (16) switching the electric motor on the basis of the control command (11) controls in order to convert the closure element into the locking state. Lock cylinder (1) according to one of the preceding claims, in which the lock cylinder (1) can be connected to a door status sensor, the control unit (16) only activating the electric motor (11) in order to convert the locking element into the locking status if the control unit (16 ) from which the Door status sensor has received a signal that the locking element is closed. Lock cylinder (1) according to one of the preceding claims, wherein the lock cylinder (1) comprises an electric actuator (22) for moving a coupling element (21) or a blocking element (23), wherein the electric actuator (22) and the electric motor (11) are formed separately from each other. Locking cylinder (1) according to one of the preceding claims, wherein the locking cylinder (1) comprises a transmitting and receiving unit for wireless short-range communication with a mobile unit (30, 31), wherein when the locking cylinder (1) has a mobile unit (30, 31 ) detected with an access authorization in the short-range communication area, a control of the electric motor (11) is omitted. Lock cylinder (1) according to one of the preceding claims, characterized in that the lock cylinder (1) comprises an interface (19) for receiving a first piece of information and a second piece of information from a mobile unit (30, 31), the lock cylinder (1) is designed to activate the actuator (22) after receiving the first information and to activate the electric motor (11) after receiving the second information. Lock cylinder (1) according to one of the preceding claims,
wherein the electric motor (11) rotates the driver (10) in the uninstalled state of the lock cylinder (1) at an angular speed of no more than 100°/s, preferably no more than 50°/s, particularly preferably no more than 20°/s and/or a The change in state of the lock cylinder (1) brought about by the actuator (22) is at least one second faster, preferably at least two seconds, particularly preferably at least five seconds faster than a movement of the driver (10) by means of the electric motor (11) in the uninstalled state in order to move the locking element of to convert the locked state into the unlocked state or vice versa. Lock cylinder (1) according to one of the preceding claims,
wherein the lock cylinder (1) comprises a, in particular standardized, lock cylinder housing (12) for insertion into the closure element and a shaft (50) mounted in the lock cylinder housing, with a stator (40) of the electric motor (11) and/or the generator (14) is non-rotatably connected to the lock cylinder housing (12) and a rotor (41) of the electric motor (11) and/or the generator (14) rotates with the shaft (50) or a shaft part ,
in particular wherein the electric motor (11) and/or the generator (14) is/are arranged in the lock cylinder housing (12) or wherein the lock cylinder (1) comprises a handle for rotating the driver (10) and the electric motor (11) and/or or the generator (14) is/are arranged in the handle. Lock cylinder (1) according to one of the preceding claims, wherein the lock cylinder (1) comprises a, in particular continuous, shaft (50) and an electromechanical clutch unit (20), wherein in a first state of the electromechanical clutch unit (20) the shaft (50) is operatively connected to the driver (10), so that actuation of the shaft (50) causes the driver (10) to rotate and, in a second state of the electromechanical clutch unit (20), the shaft (50) can be rotated independently of the driver (10). is, in particular wherein both in the first and in the second state of the clutch unit (20) a manual rotation of the shaft (50) generates energy by means of the generator (14). Lock cylinder (1) according to one of Claims 1 to 11, the lock cylinder (1) comprising a shaft (50) and an electromechanical clutch unit (20), the shaft (50) being divided into an outer shaft (51) as a first shaft part and a inner shaft (52) is divided as a second shaft part, the outer shaft (51) being connected to the driver (10) in a first state of the clutch unit (20) and independent of the driver (10 ) is rotatable, wherein both in the first and in the second state of the clutch unit (20) a manual rotation of a shaft part (51, 52) generates energy by means of the generator (14) and/or only in the first state a manual rotation of the other shaft part (51, 52) generates energy by means of the generator (14). Lock cylinder (1) according to claim 12 or 13, wherein the lock cylinder (1) comprises an electronic control unit (16), wherein the electronic control unit (16) comprises a timer, the control unit (16) depending on at least one predetermined first time of the day The clutch unit (20) is transferred from the first state to the second state and/or the control unit (16) changing the clutch unit (20) from the second state as a function of at least one predetermined second time of day or a predetermined coupling period transferred to the first state, in particular wherein the at least one predetermined first or second time of day or the coupling period can be stored in the control unit (16) in an adjustable manner. Lock cylinder (1) according to one of claims 1 to 11, wherein the shaft (50) comprises an outer shaft (51) and an inner shaft (52), the inner shaft (52) being connected or connectable to the driver (10), the The outer shaft (51) can be brought into a locked state and into an unlocked state, with rotation of the outer shaft (51) being prevented in the locked state and rotation of the outer shaft (51) being enabled in the unlocked state, with the outer shaft (51) being in the locked state is decoupled from the driver (10) and is operatively connected to the driver (10) in the unlocked state, the outer shaft (51) being operatively connected to the electric motor (11) and/or the generator (14) in the unlocked state and/or in the locked state with the electric motor (11) and / or the generator (14) is decoupled.

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