An electric door lock unit with switchable power-to-open and power-to-lock function

Abstract

The invention relates to an electric door lock unit (1) for installation in a door leaf (100) or in a door frame (110), the electric door lock unit (1) comprising an arrest member (10) movable between an arrest position in which the door leaf (100) is arrested from being opened, and a release position in which the door leaf (100) is not arrested from being opened, an electric actuator (20), a transmission assembly (30) operatively arranged between the electric actuator (20) and the arrest member (10), wherein the transmission assembly (30) may selectively be set in either a first operation mode (PTO) or a second operation mode (PTL). The electric door lock unit (1) further comprises a selector member (32) for selection of the first operation mode (PTL) or the second operation mode (PTO).

Description

CO-PENDING RELATED PATENT APPLICATIONS

[0001] The present Swedish patent application is filed concurrently with the following related Swedish patent applications by the same applicant. The features of these patent applications are to be considered incorporated by reference into each other. The related patent applications, including the present one, are titled: SE2451036-4: An electric door lock unit comprising a reversible dual-bevel latch SE2451037-2: An electric door lock unit comprising a four-bar linkage SE2451038-0: An electric door lock unit with switchable power-to-open and power-to-lock function SE2451039-8: A door lock unit configured to block a latch when a bolt is extended TECHNICAL FIELD

[0002] The present invention generally pertains to door lock units, and more precisely to an electric door lock with a switchable power-to-open and power-to lock function. The electric door lock unit may typically be adapted for installation in a door leaf.BACKGROUND

[0003] Door lock units have a vast range of applications, such as at hotels, hospitals, offices, or the like. For certain applications, electric door lock units, for example solenoid or motor locks, are particularly popular. A common type of electric door lock units is activated, e.g. locked or unlocked, by means of a magnetic card, a mobile phone, an RFID tag, a security system, or the like. In other applications, the door lock unit may be operated manually, i.e. without a solenoid or the like.

[0004] Examples of electric door lock units are electric strikes and electric mortise locks. Reference is made to the patent publication SE2251211A1 for a description of an electric strike assembly.

[0005] Even though today's door lock units generally function satisfactorily, there is still room for improvement in terms of security, durability, ease of installation, and cost.SUMMARY

[0006] A general object of the invention is to address the challenges mentioned above. In particular, an object is to facilitate installation and keep costs down by providing a door lock unit that is highly adaptable to various use cases and applications. Preferably, the invention of the present disclosure is to provide a mechanical mechanism that is compact, robust, reliable, and easy to manufacture and assemble. In particular, the number of components, especially moving components, is intended to be reduced. Compact mechanical mechanisms are particularly beneficial in modern electric door lock units, where space is needed for electric and electronic equipment.

[0007] In accordance with the present disclosure, there is provided an electric door lock unit for installation in a door leaf or in a door frame. The electric door lock unit may e.g. be an electric strike or an electric mortise lock. The door lock unit comprises an arrest member that is movable between an arrest position in which the door leaf is arrested from being opened, and a release position in which the door leaf is not arrested from being opened. The door lock unit further comprises an electric actuator, a transmission assembly operatively arranged between the electric actuator and the arrest member. The transmission assembly may selectively be set in either a first operation mode, e.g. a Power-to-Open mode, or a second operation mode, e.g. a Power-to-Lock mode.

[0008] The electric door lock unit is configured such that in the first operation mode, when the electric actuator is powerless, the transmission assembly disables a movement of the arrest member from the arrest position to the release position, and when the electric actuator is powered, the transmission assembly enables a movement of the arrest member from the arrest position to the release position.

[0009] Further, the electric door lock unit is configured such that in the second operation mode, when the electric actuator is powerless, the transmission assembly enables a movement of the arrest member from the arrest position to the release position, and when the electric actuator is powered, the transmission assembly disables a movement of the arrest member from the arrest position to the release position.

[0010] Importantly, the electric door lock unit comprises a selector member for selection of the first operation mode or the second operation mode.

[0011] Advantages involve that a user, typically a locksmith or a technician but also a construction worker or a layperson, may quickly and easily switch between the operation modes. Typically, there is no need to open or disassemble the electric door lock unit, e.g. to change the orientation of a solenoid. The modes may e.g. be a Power-to-Open mode, PTO, and a Power-to-Lock mode, PTL. The PTO mode may be desired in certain scenarios and applications where a door is to be remain shut and not possible to open unless power is supplied to the electric door lock unit. In other situations, the PTL mode may be preferred to allow a door to be opened when no electric power is supplied to the electric door lock unit, e.g. due to a power outage or during installation. The PTO mode may be referred to as a Fail-Secure mode, and the PTL mode may be referred to as a Fail-Safe mode.

[0012] To provide for particularly quick and easy switching between the operation modes, the selector member may be externally accessible, i.e. accessible from or on the outside of the electric door lock unit. The selector member, alternatively referred to as a function selector, may be directly or indirectly externally accessible. To allow for easy operation, yet hinder unintended or unauthorized switching between the operation modes, the selector member may be disposed such that it is accessible before installation of the electric door lock, and inaccessible after installation.

[0013] Further advantages and advantageous features of the invention are disclosed in the following description and in the dependent claims.DESCRIPTION OF THE DRAWINGS

[0014] Below embodiments of the invention will be described with reference to the drawings, in which figure 1shows an electric door lock unit in the form of an electric strike, figures 2 to 8illustrate the operation of the electric strike of figure 1, figure 9shows an electric door lock unit in the form of a mortise lock, figures 10 and 18illustrate the operation of the mortise lock of figure 9, where figures 14 and 15 and are views of the internal components of the mortise lock (side casings and some mounting elements being omitted), figures 19 and 20show the electric strike and the mortise lock in perspective views, and figures 21 and 22illustrate a door frame and a door leaf in which the respective electric door lock units (electric strike and mortise lock) may be installed. DETAILED DESCRIPTION OF EMBODIMENTS

[0015] The figures show an electric door lock unit 1 for installation in a door leaf 100 or in a door frame 110. The door lock unit 1 comprises an arrest member 10 movable between an arrest position in which the door leaf 100 is arrested from being opened, and a release position in which the door leaf 100 is not arrested from being opened.

[0016] The electric door lock unit 1, or lock unit, further comprises an electric actuator 20, denoted in e.g. figures 5 and 10. A transmission assembly 30 is operatively arranged between the electric actuator 20 and the arrest member 10. The transmission assembly 30 may selectively be set, i.e. is selectively settable, in either a first operation mode, hereinafter PTO or PTO mode, or a second operation mode, hereinafter PTL or PTL mode.

[0017] The electric door lock unit 1 is configured such that in the PTO mode, when the electric actuator 20 is powerless, the transmission assembly 30 disables a movement of the arrest member 10 from the arrest position to the release position, and when the electric actuator 20 is powered, the transmission assembly 30 enables a movement of the arrest member 10 from the arrest position to the release position.

[0018] In the PTL mode, when the electric actuator 20 is powerless, the transmission assembly 30 enables a movement of the arrest member 10 from the arrest position to the release position, and when the electric actuator 20 is powered, the transmission assembly 30 disables a movement of the arrest member 10 from the arrest position to the release position.

[0019] The electric door lock unit 1 comprises a selector member 32 for convenient selection of the PTL mode PTO mode.

[0020] As is clear e.g. from figures 1 and 9, the lock unit 1 may be configured such that the selector member 32 may be manually set, i.e. is manually settable, by a technician or a user. The selector member 32 may be externally accessible on the electric door lock unit 1. In some detail, the selector member 32 may comprise, or be connected to, a selector member portion that is externally accessible on the electric door lock unit 1. The selector member portion may be a portion of a lever, e.g. a tip of a lever, that may be manually set in the first or second operation mode by a translational motion, similar to flipping a lever switch. Alternatively, the selector member portion may be a rotary actuation interface, such as a screw or bolt head, that may be manually set in the first or second operation mode by a rotational motion. The latter selector member portion may be adapted to receive e.g. a screw driver, or be a turn knob that can be manipulated by hand.

[0021] In the present examples, the selector member portion is disposed such that it is accessible when the lock unit 1 is not mounted in the door leaf 100 or the door frame 110, and inaccessible when the electric door lock unit 1 is mounted in the door leaf 100 or door frame 110. As is shown, the selector member portion may be disposed on a section of the lock unit 1 that is inaccessible when the lock unit 1 is mounted in the door leaf 100 or door frame 110.

[0022] Referring in particular to figures 6 to 8 and 16 to 18, the lock unit 1 may be configured such that the selector member 32 may be selectively retained in the first and second mode positions, i.e. in the PTO position and the PTL position, respectively. In some detail, there may be provided a resilient retain arrangement for retaining the selector member 32 in the first and second mode positions, respectively. The resilient retain arrangement may comprise a detent mechanism and a protrusion or a recess configured to be engaged by the detent mechanism. The resilient retain arrangement may comprise a detent mechanism in the form of a ball detent and a first and a second groove configured to receive the ball of the ball detent.

[0023] Referring to figures 1 to 8 and 19, the lock unit 1 may be an electric strike and the arrest element 10 may be a keeper of the electric strike. In alternative, referring to figures 9 to 18 and 20, the lock unit 1 may be an electric mortise lock 1' and the arrest element 10' may be a latch of the electric mortise lock. In the present disclosure, reference characters related to the mortise lock embodiment are marked with a prime, while those that generally relate to both embodiments are not marked with a prime. Instead, reference characters that apply to both embodiments could be left unmarked, with reference characters specific to the mortise lock embodiment marked with a prime and reference characters specific to the electric strike could marked with a double prime.

[0024] Referring now in particular to figures 2 to 5, the transmission mechanism 30 may comprise an interlock lever 34 movable between a keeper block position, in which the keeper 10 is blocked in its arrest position, and a keeper unblock position, in which the keeper 10 may move from its arrest position to its release position. The selector member 32 may be in the form of a selector lever member. The electric strike may be configured such that in the PTO mode, when the electric actuator 20 is powerless (figure 2), the interlock lever 34 is blocked in its keeper block position by the selector lever member being set in a first position 32a to disable a movement of the keeper 10. When the electric actuator 20 becomes powered (figure 2a), the interlock lever 34 is not blocked in its keeper block position, the selector lever member has been set (rotated to by means of the movement of the solenoid 20) in a second position 32b to enable a movement of the keeper 10. In the PTL mode, when the electric actuator 20 is powerless (figure 3), the interlock lever 34 is not blocked in its keeper block position, the selector lever member being set in a second position 32b to enable a movement of the keeper 10, and when the electric actuator 20 is becomes powered (figure 3a), the interlock lever 34 is blocked in its keeper block position by the selector lever member being set (rotated to by means of the movement of the solenoid20 ) in a first position 32a to disable a movement of the keeper 10.

[0025] As is shown, the interlock lever 34 may be elongated and the transmission mechanism 30 may be configured such that the selector lever member 32 may interact with the interlock lever 34 at a distal section of the interlock lever 34 in relation to the fulcrum of the interlock lever 34, and the keeper 10 may interact with the interlock lever 34 at a proximal section of the interlock lever 34. Such as design is beneficial as the keeper may be securely held using the lever arm of the interlock lever 34. In particular figure 6 discloses an optional auxiliary solenoid (to the right in figure 6) that may be used to block the distal end of the interlock lever 34.

[0026] Referring in particular to figures 10 to 13, the transmission mechanism 30 may comprise comprises a hub follower 31' movable between a hub engage position 31e', in which the hub follower 31' may be moved, i.e. is adapted to be moved, by the latch hub to move the latch 10', and a hub disengage position 31d' in which the hub follower 31' is free from the latch hub such that the latch 10' is unaffected by a latch hub movement. There may be a selector member 32 in the form of a selector lever member. The mortise lock may be configured such that in the PTO mode, when the electric actuator 20' is powerless (figure 10), the hub follower 31' is in its hub disengage position 31d' by the selector lever member being set in a first position 32a' to disable a movement of the latch 10'. When the electric actuator 20' becomes powered (figure 11), the hub follower 31' is brought to its hub engage position 31e' by the selector lever member being moved by the electric actuator 20', such that a movement of the latch hub results in a movement of the latch 10'. In the second PTL, when the electric actuator 20' is powerless (figure 12), the hub follower 31' is in its hub engage position 31e' by the selector lever being set in a second position 32b', such that a movement of the latch hub results in a movement of the latch 10'. When the electric actuator 20' becomes powered (figure 13), the hub follower 31' is brought to its hub disengage position 31d' by the selector lever member being moved by the electric actuator 20', being set in a first position 32a' to disable a movement of the latch 10'.

[0027] As is shown, the selector lever member 32' may be elongated and the transmission mechanism 30' may be configured such that the electric actuator 20' may interact with the selector lever member 32' at a distal section thereof in relation to the fulcrum of the selector lever member 32', and the hub follower 31' may interact with the selector lever member 32' at a proximal section of the selector lever member 32'.

[0028] As described in SE2251211A1, an electric strike unit, or assembly, is adapted to be mounted in the door frame. Further, an electric strike unit is adapted to electrically control locking and unlocking of a rotary keeper of the electric strike unit. Thus, the keeper of the electric strike unit may be selectively locked or unlocked.

[0029] Examples in accordance with the following clauses are also disclosed: 1. An electric door lock unit (1) for installation in a door leaf (100) or in a door frame (110), the electric door lock unit (1) comprising an arrest member (10) movable between an arrest position in which the door leaf (100) is arrested from being opened, and a release position in which the door leaf (100) is not arrested from being opened, an electric actuator (20), a transmission assembly (30) operatively arranged between the electric actuator (20) and the arrest member (10), wherein the transmission assembly (30) may selectively be set in either a first operation mode (PTO) or a second operation mode (PTL) and the electric door lock unit (1) is configured such that in the first operation mode (PTO), when the electric actuator (20) is powerless, the transmission assembly (30) disables a movement of the arrest member (10) from the arrest position to the release position, and when the electric actuator (20) is powered, the transmission assembly (30) enables a movement of the arrest member (10) from the arrest position to the release position, whereas in the second operation mode (PTL), when the electric actuator (20) is powerless, the transmission assembly (30) enables a movement of the arrest member (10) from the arrest position to the release position, and when the electric actuator (20) is powered, the transmission assembly (30) disables a movement of the arrest member (10) from the arrest position to the release position, wherein the electric door lock unit (1) comprises a selector member (32) for selection of the first operation mode (PTL) or the second operation mode (PTO). 2. The electric door lock unit (1) of clause 1, configured such that the selector member (32) may be manually set by a technician or a user. 3. The electric door lock unit (1) of clause 2, wherein the selector member (32) is externally accessible on the electric door lock unit (1). 4. The electric door lock unit (1) of clause 3, wherein the selector member (32) comprises or is connected to a selector member portion that is externally accessible on the electric door lock unit (1). 5. The electric door lock unit (1) of clause 4, wherein the selector member portion is a portion of a lever that may be manually set in the first or second operation mode (PTO, PTL) by a translational motion, or a rotary actuation interface, such as a screw or bolt head, that may be manually set in the first or second operation mode (PTO, PTL) by a rotational motion. 6. The electric door lock unit (1) of clause 4 or 5, wherein the selector member portion is disposed such that it is accessible when the electric door lock unit (1) is not mounted in the door leaf (100) or the door frame (110), and inaccessible when the electric door lock unit (1) is mounted in the door leaf (100) or door frame (110). 7. The electric door lock unit (1) according to any of clauses 4 to 6, wherein the selector member portion is disposed on a section of the electric door lock unit (1) that is inaccessible when the electric door lock unit (1) is mounted in the door leaf (100) or door frame (110). 8. The electric door lock unit (1) of any preceding clause, configured such that the selector member (32) may be selectively retained in the first and second mode positions (PTO, PTL), respectively. 9. The electric door lock unit (1) of clause 8, comprising a resilient retain arrangement () for retaining the selector member (32) in the first and second mode positions (PTO, PTL), respectively. 10. The electric door lock unit (1) of clause 9, wherein the resilient retain arrangement () comprises a detent mechanism () and a protrusion or a recess () configured to be engaged by the detent mechanism (). 11. The electric door lock unit (1) of any preceding clause, wherein the electric door lock unit (1) is an electric strike and the arrest element (10) is a keeper of the electric strike, or wherein the electric door lock unit (1) is an electric mortise lock (1') and the arrest element (10') is a latch of the electric mortise lock. 12. The electric door lock unit (1) of clause 11, wherein the electric door lock unit (1) is an electric strike and the transmission mechanism (30) comprises an interlock member (34) movable between a keeper block position, in which the keeper (10) is blocked in its arrest position, and a keeper unblock position, in which the keeper (10) may move from its arrest position to its release position, and a selector member (32) in the form of a selector lever member, wherein the electric strike is configured such that in the first operation mode (PTO), when the electric actuator (20) is powerless, the interlock member (34) is blocked in its keeper block position by the selector lever member being set in a first position (32a) to disable a movement of the keeper (10), and when the electric actuator (20) is powered, the interlock member (34) is not blocked in its keeper block position, the selector lever member being set in a second position (32b) to enable a movement of the keeper (10), whereas in the second operation mode (PTL), when the electric actuator (20) is powerless, the interlock member (34) is not blocked in its keeper block position, the selector lever member being set in a second position (32b) to enable a movement of the keeper (10), and when the electric actuator (20) is powered, the interlock member (34) is blocked in its keeper block position by the selector lever member being set in a first position (32a) to disable a movement of the keeper (10). 13. The electric door lock unit (1) of clause 12, wherein the interlock lever (34) is elongated and the transmission mechanism (30) is configured such that the selector lever member (32) may interact with the interlock lever (34) at a distal section of the interlock lever (34) in relation to the fulcrum of the interlock lever (34), and the keeper (10) may interact with the interlock lever (34) at a proximal section of the interlock lever (34). 14. The electric door lock unit (1) of clause 11, wherein the electric door lock unit is a mortise lock (1') that comprises a latch hub rotatably journalled in the electric door lock unit (1) and adapted to move the latch, wherein the transmission mechanism (30) comprises a hub follower (31') movable between a hub engage position (31e'), in which the hub follower (31') may be moved by the latch hub to move the latch (10'), and a hub disengage position (31d') in which the hub follower (31') is free from the latch hub such that the latch (10') is unaffected by a latch hub movement, and a selector member (32) in the form of a selector lever member, wherein the mortise lock is configured such that in the first operation mode (PTO), when the electric actuator (20') is powerless, the hub follower (31') is in its hub disengage position (31d') by the selector lever member being set in a first position (32a') to disable a movement of the latch (10'), and when the electric actuator (20') is powered, the hub follower (31') is in its hub engage position (31e') by the selector lever member being moved by the electric actuator (20'), such that a movement of the latch hub results in a movement of the latch (10'), whereas in the second operation mode (PTL), when the electric actuator (20') is powerless, the hub follower (31') is in its hub engage position (31e') by the selector lever being set in a second position (32b'), such that a movement of the latch hub results in a movement of the latch (10'), and when the electric actuator (20') is powered, the hub follower (31') is in its hub disengage position (31d') by the selector lever member being moved by the electric actuator (20'), being set in a first position (32a') to disable a movement of the latch (10'). 15. The electric door lock unit (1) of claim 14, wherein the selector lever member (32') is elongated and the transmission mechanism (30') is configured such that the electric actuator (20') may interact with the selector lever member (32') at a distal section thereof in relation to the fulcrum of the selector lever member (32'), and the hub follower (31') may interact with the selector lever member (32') at a proximal section of the selector lever member (32').

[0030] It is to be understood that the embodiments described above and shown in the drawings are only to be regarded as non-limiting examples of the invention, and that the latter may be modified in many ways within the scope of the appended claims.

[0031] However, except for the schematic figures 21 and 22, the drawings do disclose a possible actual implementation and should not be regarded as simply serving to give a schematic explanation of the principles of the subject-matter of the invention. Not all components of the electric door units are described herein, still a skilled person will be able to clearly and unmistakable recognise from the drawings how the components are designed and cooperate.

Examples

Embodiment Construction

[0015]The figures show an electric door lock unit 1 for installation in a door leaf 100 or in a door frame 110. The door lock unit 1 comprises an arrest member 10 movable between an arrest position in which the door leaf 100 is arrested from being opened, and a release position in which the door leaf 100 is not arrested from being opened.

[0016]The electric door lock unit 1, or lock unit, further comprises an electric actuator 20, denoted in e.g. figures 5 and 10. A transmission assembly 30 is operatively arranged between the electric actuator 20 and the arrest member 10. The transmission assembly 30 may selectively be set, i.e. is selectively settable, in either a first operation mode, hereinafter PTO or PTO mode, or a second operation mode, hereinafter PTL or PTL mode.

[0017]The electric door lock unit 1 is configured such that in the PTO mode, when the electric actuator 20 is powerless, the transmission assembly 30 disables a movement of the arrest member 10 from the arrest positio...

CO-PENDING RELATED PATENT APPLICATIONS

[0001] The present Swedish patent application is filed concurrently with the following related Swedish patent applications by the same applicant. The features of these patent applications are to be considered incorporated by reference into each other. The related patent applications, including the present one, are titled: SE2451036-4: An electric door lock unit comprising a reversible dual-bevel latch SE2451037-2: An electric door lock unit comprising a four-bar linkage SE2451038-0: An electric door lock unit with switchable power-to-open and power-to-lock function SE2451039-8: A door lock unit configured to block a latch when a bolt is extended TECHNICAL FIELD

[0002] The present invention generally pertains to door lock units, and more precisely to an electric door lock with a switchable power-to-open and power-to lock function. The electric door lock unit may typically be adapted for installation in a door leaf.BACKGROUND

[0003] Door lock units have a vast range of applications, such as at hotels, hospitals, offices, or the like. For certain applications, electric door lock units, for example solenoid or motor locks, are particularly popular. A common type of electric door lock units is activated, e.g. locked or unlocked, by means of a magnetic card, a mobile phone, an RFID tag, a security system, or the like. In other applications, the door lock unit may be operated manually, i.e. without a solenoid or the like.

[0004] Examples of electric door lock units are electric strikes and electric mortise locks. Reference is made to the patent publication SE2251211A1 for a description of an electric strike assembly.

[0005] Even though today's door lock units generally function satisfactorily, there is still room for improvement in terms of security, durability, ease of installation, and cost.SUMMARY

[0006] A general object of the invention is to address the challenges mentioned above. In particular, an object is to facilitate installation and keep costs down by providing a door lock unit that is highly adaptable to various use cases and applications. Preferably, the invention of the present disclosure is to provide a mechanical mechanism that is compact, robust, reliable, and easy to manufacture and assemble. In particular, the number of components, especially moving components, is intended to be reduced. Compact mechanical mechanisms are particularly beneficial in modern electric door lock units, where space is needed for electric and electronic equipment.

[0007] In accordance with the present disclosure, there is provided an electric door lock unit for installation in a door leaf or in a door frame. The electric door lock unit may e.g. be an electric strike or an electric mortise lock. The door lock unit comprises an arrest member that is movable between an arrest position in which the door leaf is arrested from being opened, and a release position in which the door leaf is not arrested from being opened. The door lock unit further comprises an electric actuator, a transmission assembly operatively arranged between the electric actuator and the arrest member. The transmission assembly may selectively be set in either a first operation mode, e.g. a Power-to-Open mode, or a second operation mode, e.g. a Power-to-Lock mode.

[0008] The electric door lock unit is configured such that in the first operation mode, when the electric actuator is powerless, the transmission assembly disables a movement of the arrest member from the arrest position to the release position, and when the electric actuator is powered, the transmission assembly enables a movement of the arrest member from the arrest position to the release position.

[0009] Further, the electric door lock unit is configured such that in the second operation mode, when the electric actuator is powerless, the transmission assembly enables a movement of the arrest member from the arrest position to the release position, and when the electric actuator is powered, the transmission assembly disables a movement of the arrest member from the arrest position to the release position.

[0010] Importantly, the electric door lock unit comprises a selector member for selection of the first operation mode or the second operation mode.

[0011] Advantages involve that a user, typically a locksmith or a technician but also a construction worker or a layperson, may quickly and easily switch between the operation modes. Typically, there is no need to open or disassemble the electric door lock unit, e.g. to change the orientation of a solenoid. The modes may e.g. be a Power-to-Open mode, PTO, and a Power-to-Lock mode, PTL. The PTO mode may be desired in certain scenarios and applications where a door is to be remain shut and not possible to open unless power is supplied to the electric door lock unit. In other situations, the PTL mode may be preferred to allow a door to be opened when no electric power is supplied to the electric door lock unit, e.g. due to a power outage or during installation. The PTO mode may be referred to as a Fail-Secure mode, and the PTL mode may be referred to as a Fail-Safe mode.

[0012] To provide for particularly quick and easy switching between the operation modes, the selector member may be externally accessible, i.e. accessible from or on the outside of the electric door lock unit. The selector member, alternatively referred to as a function selector, may be directly or indirectly externally accessible. To allow for easy operation, yet hinder unintended or unauthorized switching between the operation modes, the selector member may be disposed such that it is accessible before installation of the electric door lock, and inaccessible after installation.

[0013] Further advantages and advantageous features of the invention are disclosed in the following description and in the dependent claims.DESCRIPTION OF THE DRAWINGS

[0014] Below embodiments of the invention will be described with reference to the drawings, in which figure 1shows an electric door lock unit in the form of an electric strike, figures 2 to 8illustrate the operation of the electric strike of figure 1, figure 9shows an electric door lock unit in the form of a mortise lock, figures 10 and 18illustrate the operation of the mortise lock of figure 9, where figures 14 and 15 and are views of the internal components of the mortise lock (side casings and some mounting elements being omitted), figures 19 and 20show the electric strike and the mortise lock in perspective views, and figures 21 and 22illustrate a door frame and a door leaf in which the respective electric door lock units (electric strike and mortise lock) may be installed. DETAILED DESCRIPTION OF EMBODIMENTS

[0015] The figures show an electric door lock unit 1 for installation in a door leaf 100 or in a door frame 110. The door lock unit 1 comprises an arrest member 10 movable between an arrest position in which the door leaf 100 is arrested from being opened, and a release position in which the door leaf 100 is not arrested from being opened.

[0016] The electric door lock unit 1, or lock unit, further comprises an electric actuator 20, denoted in e.g. figures 5 and 10. A transmission assembly 30 is operatively arranged between the electric actuator 20 and the arrest member 10. The transmission assembly 30 may selectively be set, i.e. is selectively settable, in either a first operation mode, hereinafter PTO or PTO mode, or a second operation mode, hereinafter PTL or PTL mode.

[0017] The electric door lock unit 1 is configured such that in the PTO mode, when the electric actuator 20 is powerless, the transmission assembly 30 disables a movement of the arrest member 10 from the arrest position to the release position, and when the electric actuator 20 is powered, the transmission assembly 30 enables a movement of the arrest member 10 from the arrest position to the release position.

[0018] In the PTL mode, when the electric actuator 20 is powerless, the transmission assembly 30 enables a movement of the arrest member 10 from the arrest position to the release position, and when the electric actuator 20 is powered, the transmission assembly 30 disables a movement of the arrest member 10 from the arrest position to the release position.

[0019] The electric door lock unit 1 comprises a selector member 32 for convenient selection of the PTL mode PTO mode.

[0020] As is clear e.g. from figures 1 and 9, the lock unit 1 may be configured such that the selector member 32 may be manually set, i.e. is manually settable, by a technician or a user. The selector member 32 may be externally accessible on the electric door lock unit 1. In some detail, the selector member 32 may comprise, or be connected to, a selector member portion that is externally accessible on the electric door lock unit 1. The selector member portion may be a portion of a lever, e.g. a tip of a lever, that may be manually set in the first or second operation mode by a translational motion, similar to flipping a lever switch. Alternatively, the selector member portion may be a rotary actuation interface, such as a screw or bolt head, that may be manually set in the first or second operation mode by a rotational motion. The latter selector member portion may be adapted to receive e.g. a screw driver, or be a turn knob that can be manipulated by hand.

[0021] In the present examples, the selector member portion is disposed such that it is accessible when the lock unit 1 is not mounted in the door leaf 100 or the door frame 110, and inaccessible when the electric door lock unit 1 is mounted in the door leaf 100 or door frame 110. As is shown, the selector member portion may be disposed on a section of the lock unit 1 that is inaccessible when the lock unit 1 is mounted in the door leaf 100 or door frame 110.

[0022] Referring in particular to figures 6 to 8 and 16 to 18, the lock unit 1 may be configured such that the selector member 32 may be selectively retained in the first and second mode positions, i.e. in the PTO position and the PTL position, respectively. In some detail, there may be provided a resilient retain arrangement for retaining the selector member 32 in the first and second mode positions, respectively. The resilient retain arrangement may comprise a detent mechanism and a protrusion or a recess configured to be engaged by the detent mechanism. The resilient retain arrangement may comprise a detent mechanism in the form of a ball detent and a first and a second groove configured to receive the ball of the ball detent.

[0023] Referring to figures 1 to 8 and 19, the lock unit 1 may be an electric strike and the arrest element 10 may be a keeper of the electric strike. In alternative, referring to figures 9 to 18 and 20, the lock unit 1 may be an electric mortise lock 1' and the arrest element 10' may be a latch of the electric mortise lock. In the present disclosure, reference characters related to the mortise lock embodiment are marked with a prime, while those that generally relate to both embodiments are not marked with a prime. Instead, reference characters that apply to both embodiments could be left unmarked, with reference characters specific to the mortise lock embodiment marked with a prime and reference characters specific to the electric strike could marked with a double prime.

[0024] Referring now in particular to figures 2 to 5, the transmission mechanism 30 may comprise an interlock lever 34 movable between a keeper block position, in which the keeper 10 is blocked in its arrest position, and a keeper unblock position, in which the keeper 10 may move from its arrest position to its release position. The selector member 32 may be in the form of a selector lever member. The electric strike may be configured such that in the PTO mode, when the electric actuator 20 is powerless (figure 2), the interlock lever 34 is blocked in its keeper block position by the selector lever member being set in a first position 32a to disable a movement of the keeper 10. When the electric actuator 20 becomes powered (figure 2a), the interlock lever 34 is not blocked in its keeper block position, the selector lever member has been set (rotated to by means of the movement of the solenoid 20) in a second position 32b to enable a movement of the keeper 10. In the PTL mode, when the electric actuator 20 is powerless (figure 3), the interlock lever 34 is not blocked in its keeper block position, the selector lever member being set in a second position 32b to enable a movement of the keeper 10, and when the electric actuator 20 is becomes powered (figure 3a), the interlock lever 34 is blocked in its keeper block position by the selector lever member being set (rotated to by means of the movement of the solenoid20 ) in a first position 32a to disable a movement of the keeper 10.

[0025] As is shown, the interlock lever 34 may be elongated and the transmission mechanism 30 may be configured such that the selector lever member 32 may interact with the interlock lever 34 at a distal section of the interlock lever 34 in relation to the fulcrum of the interlock lever 34, and the keeper 10 may interact with the interlock lever 34 at a proximal section of the interlock lever 34. Such as design is beneficial as the keeper may be securely held using the lever arm of the interlock lever 34. In particular figure 6 discloses an optional auxiliary solenoid (to the right in figure 6) that may be used to block the distal end of the interlock lever 34.

[0026] Referring in particular to figures 10 to 13, the transmission mechanism 30 may comprise comprises a hub follower 31' movable between a hub engage position 31e', in which the hub follower 31' may be moved, i.e. is adapted to be moved, by the latch hub to move the latch 10', and a hub disengage position 31d' in which the hub follower 31' is free from the latch hub such that the latch 10' is unaffected by a latch hub movement. There may be a selector member 32 in the form of a selector lever member. The mortise lock may be configured such that in the PTO mode, when the electric actuator 20' is powerless (figure 10), the hub follower 31' is in its hub disengage position 31d' by the selector lever member being set in a first position 32a' to disable a movement of the latch 10'. When the electric actuator 20' becomes powered (figure 11), the hub follower 31' is brought to its hub engage position 31e' by the selector lever member being moved by the electric actuator 20', such that a movement of the latch hub results in a movement of the latch 10'. In the second PTL, when the electric actuator 20' is powerless (figure 12), the hub follower 31' is in its hub engage position 31e' by the selector lever being set in a second position 32b', such that a movement of the latch hub results in a movement of the latch 10'. When the electric actuator 20' becomes powered (figure 13), the hub follower 31' is brought to its hub disengage position 31d' by the selector lever member being moved by the electric actuator 20', being set in a first position 32a' to disable a movement of the latch 10'.

[0027] As is shown, the selector lever member 32' may be elongated and the transmission mechanism 30' may be configured such that the electric actuator 20' may interact with the selector lever member 32' at a distal section thereof in relation to the fulcrum of the selector lever member 32', and the hub follower 31' may interact with the selector lever member 32' at a proximal section of the selector lever member 32'.

[0028] As described in SE2251211A1, an electric strike unit, or assembly, is adapted to be mounted in the door frame. Further, an electric strike unit is adapted to electrically control locking and unlocking of a rotary keeper of the electric strike unit. Thus, the keeper of the electric strike unit may be selectively locked or unlocked.

[0029] Examples in accordance with the following clauses are also disclosed: 1. An electric door lock unit (1) for installation in a door leaf (100) or in a door frame (110), the electric door lock unit (1) comprising an arrest member (10) movable between an arrest position in which the door leaf (100) is arrested from being opened, and a release position in which the door leaf (100) is not arrested from being opened, an electric actuator (20), a transmission assembly (30) operatively arranged between the electric actuator (20) and the arrest member (10), wherein the transmission assembly (30) may selectively be set in either a first operation mode (PTO) or a second operation mode (PTL) and the electric door lock unit (1) is configured such that in the first operation mode (PTO), when the electric actuator (20) is powerless, the transmission assembly (30) disables a movement of the arrest member (10) from the arrest position to the release position, and when the electric actuator (20) is powered, the transmission assembly (30) enables a movement of the arrest member (10) from the arrest position to the release position, whereas in the second operation mode (PTL), when the electric actuator (20) is powerless, the transmission assembly (30) enables a movement of the arrest member (10) from the arrest position to the release position, and when the electric actuator (20) is powered, the transmission assembly (30) disables a movement of the arrest member (10) from the arrest position to the release position, wherein the electric door lock unit (1) comprises a selector member (32) for selection of the first operation mode (PTL) or the second operation mode (PTO). 2. The electric door lock unit (1) of clause 1, configured such that the selector member (32) may be manually set by a technician or a user. 3. The electric door lock unit (1) of clause 2, wherein the selector member (32) is externally accessible on the electric door lock unit (1). 4. The electric door lock unit (1) of clause 3, wherein the selector member (32) comprises or is connected to a selector member portion that is externally accessible on the electric door lock unit (1). 5. The electric door lock unit (1) of clause 4, wherein the selector member portion is a portion of a lever that may be manually set in the first or second operation mode (PTO, PTL) by a translational motion, or a rotary actuation interface, such as a screw or bolt head, that may be manually set in the first or second operation mode (PTO, PTL) by a rotational motion. 6. The electric door lock unit (1) of clause 4 or 5, wherein the selector member portion is disposed such that it is accessible when the electric door lock unit (1) is not mounted in the door leaf (100) or the door frame (110), and inaccessible when the electric door lock unit (1) is mounted in the door leaf (100) or door frame (110). 7. The electric door lock unit (1) according to any of clauses 4 to 6, wherein the selector member portion is disposed on a section of the electric door lock unit (1) that is inaccessible when the electric door lock unit (1) is mounted in the door leaf (100) or door frame (110). 8. The electric door lock unit (1) of any preceding clause, configured such that the selector member (32) may be selectively retained in the first and second mode positions (PTO, PTL), respectively. 9. The electric door lock unit (1) of clause 8, comprising a resilient retain arrangement () for retaining the selector member (32) in the first and second mode positions (PTO, PTL), respectively. 10. The electric door lock unit (1) of clause 9, wherein the resilient retain arrangement () comprises a detent mechanism () and a protrusion or a recess () configured to be engaged by the detent mechanism (). 11. The electric door lock unit (1) of any preceding clause, wherein the electric door lock unit (1) is an electric strike and the arrest element (10) is a keeper of the electric strike, or wherein the electric door lock unit (1) is an electric mortise lock (1') and the arrest element (10') is a latch of the electric mortise lock. 12. The electric door lock unit (1) of clause 11, wherein the electric door lock unit (1) is an electric strike and the transmission mechanism (30) comprises an interlock member (34) movable between a keeper block position, in which the keeper (10) is blocked in its arrest position, and a keeper unblock position, in which the keeper (10) may move from its arrest position to its release position, and a selector member (32) in the form of a selector lever member, wherein the electric strike is configured such that in the first operation mode (PTO), when the electric actuator (20) is powerless, the interlock member (34) is blocked in its keeper block position by the selector lever member being set in a first position (32a) to disable a movement of the keeper (10), and when the electric actuator (20) is powered, the interlock member (34) is not blocked in its keeper block position, the selector lever member being set in a second position (32b) to enable a movement of the keeper (10), whereas in the second operation mode (PTL), when the electric actuator (20) is powerless, the interlock member (34) is not blocked in its keeper block position, the selector lever member being set in a second position (32b) to enable a movement of the keeper (10), and when the electric actuator (20) is powered, the interlock member (34) is blocked in its keeper block position by the selector lever member being set in a first position (32a) to disable a movement of the keeper (10). 13. The electric door lock unit (1) of clause 12, wherein the interlock lever (34) is elongated and the transmission mechanism (30) is configured such that the selector lever member (32) may interact with the interlock lever (34) at a distal section of the interlock lever (34) in relation to the fulcrum of the interlock lever (34), and the keeper (10) may interact with the interlock lever (34) at a proximal section of the interlock lever (34). 14. The electric door lock unit (1) of clause 11, wherein the electric door lock unit is a mortise lock (1') that comprises a latch hub rotatably journalled in the electric door lock unit (1) and adapted to move the latch, wherein the transmission mechanism (30) comprises a hub follower (31') movable between a hub engage position (31e'), in which the hub follower (31') may be moved by the latch hub to move the latch (10'), and a hub disengage position (31d') in which the hub follower (31') is free from the latch hub such that the latch (10') is unaffected by a latch hub movement, and a selector member (32) in the form of a selector lever member, wherein the mortise lock is configured such that in the first operation mode (PTO), when the electric actuator (20') is powerless, the hub follower (31') is in its hub disengage position (31d') by the selector lever member being set in a first position (32a') to disable a movement of the latch (10'), and when the electric actuator (20') is powered, the hub follower (31') is in its hub engage position (31e') by the selector lever member being moved by the electric actuator (20'), such that a movement of the latch hub results in a movement of the latch (10'), whereas in the second operation mode (PTL), when the electric actuator (20') is powerless, the hub follower (31') is in its hub engage position (31e') by the selector lever being set in a second position (32b'), such that a movement of the latch hub results in a movement of the latch (10'), and when the electric actuator (20') is powered, the hub follower (31') is in its hub disengage position (31d') by the selector lever member being moved by the electric actuator (20'), being set in a first position (32a') to disable a movement of the latch (10'). 15. The electric door lock unit (1) of claim 14, wherein the selector lever member (32') is elongated and the transmission mechanism (30') is configured such that the electric actuator (20') may interact with the selector lever member (32') at a distal section thereof in relation to the fulcrum of the selector lever member (32'), and the hub follower (31') may interact with the selector lever member (32') at a proximal section of the selector lever member (32').

[0030] It is to be understood that the embodiments described above and shown in the drawings are only to be regarded as non-limiting examples of the invention, and that the latter may be modified in many ways within the scope of the appended claims.

[0031] However, except for the schematic figures 21 and 22, the drawings do disclose a possible actual implementation and should not be regarded as simply serving to give a schematic explanation of the principles of the subject-matter of the invention. Not all components of the electric door units are described herein, still a skilled person will be able to clearly and unmistakable recognise from the drawings how the components are designed and cooperate.

Examples

Embodiment Construction

[0015]The figures show an electric door lock unit 1 for installation in a door leaf 100 or in a door frame 110. The door lock unit 1 comprises an arrest member 10 movable between an arrest position in which the door leaf 100 is arrested from being opened, and a release position in which the door leaf 100 is not arrested from being opened.

[0016]The electric door lock unit 1, or lock unit, further comprises an electric actuator 20, denoted in e.g. figures 5 and 10. A transmission assembly 30 is operatively arranged between the electric actuator 20 and the arrest member 10. The transmission assembly 30 may selectively be set, i.e. is selectively settable, in either a first operation mode, hereinafter PTO or PTO mode, or a second operation mode, hereinafter PTL or PTL mode.

[0017]The electric door lock unit 1 is configured such that in the PTO mode, when the electric actuator 20 is powerless, the transmission assembly 30 disables a movement of the arrest member 10 from the arrest positio...

Claims

1. An electric door lock unit (1') in the form of an electric mortise lock for installation in a door leaf (100), the electric door lock unit (1') comprising - an arrest member (10') movable between an arrest position in which the door leaf (100) is arrested from being opened, and a release position in which the door leaf (100) is not arrested from being opened, - an electric actuator (20'), - a transmission assembly (30') operatively arranged between the electric actuator (20') and the arrest member (10'), wherein the transmission assembly (30') may selectively be set in either a first operation mode (PTO) or a second operation mode (PTL), wherein the electric door lock unit (1') comprises a selector member (32') for selection of the first operation mode (PTL) or the second operation mode (PTO), the arrest member (10') is a latch of the electric mortise lock, and wherein the electric door unit (1') comprises a latch hub rotatably journalled in the electric door lock unit (1') and adapted to move the latch, wherein the transmission assembly (30') comprises a hub follower (31') movable between a hub engage position (31e'), in which the hub follower (31') may be moved by the latch hub to move the latch, and a hub disengage position (31d') in which the hub follower (31') is free from the latch hub such that the latch is unaffected by a latch hub movement, and the selector member (32') is in the form of a selector lever member, wherein the mortise lock is configured such that in the first operation mode (PTO), when the electric actuator (20') is powerless, the hub follower (31') is in its hub disengage position (31d') by the selector lever member being set in a first position (32a') to disable a movement of the latch, and when the electric actuator (20') is powered, the hub follower (31') is in its hub engage position (31e') by the selector lever member being moved by the electric actuator (20'), such that a movement of the latch hub results in a movement of the latch, whereas in the second operation mode (PTL), when the electric actuator (20') is powerless, the hub follower (31') is in its hub engage position (31e') by the selector lever being set in a second position (32b'), such that a movement of the latch hub results in a movement of the latch, and when the electric actuator (20') is powered, the hub follower (31') is in its hub disengage position (31d') by the selector lever member being moved by the electric actuator (20'), being set in a first position (32a') to disable a movement of the latch (10').

2. The electric door lock unit (1') of claim 1, configured such that the selector member (32') may be manually set by a technician or a user.

3. The electric door lock unit (1') of claim 2, wherein the selector member (32') is externally accessible on the electric door lock unit (1).

4. The electric door lock unit (1') of claim 3, wherein the selector member (32') comprises or is connected to a selector member portion that is externally accessible on the electric door lock unit (1).

5. The electric door lock unit (1') of claim 4, wherein the selector member portion is a portion of a lever that may be manually set in the first or second operation mode (PTO, PTL) by a translational motion, or a rotary actuation interface, such as a screw or bolt head, that may be manually set in the first or second operation mode (PTO, PTL) by a rotational motion.

6. The electric door lock unit (1') of claim 4 or 5, wherein the selector member portion is disposed such that it is accessible when the electric door lock unit (1') is not mounted in the door leaf (100), and inaccessible when the electric door lock unit (1') is mounted in the door leaf (100).

7. The electric door lock unit (1') according to any of claims 4 to 6, wherein the selector member portion is disposed on a section of the electric door lock unit (1) that is inaccessible when the electric door lock unit (1') is mounted in the door leaf (100).

8. The electric door lock unit (1') of any preceding claim, configured such that the selector member (32') may be selectively retained in the first and second mode positions (PTO, PTL), respectively.

9. The electric door lock unit (1') of claim 8, comprising a resilient retain arrangement for retaining the selector member (32') in the first and second mode positions (PTO, PTL), respectively.

10. The electric door lock unit (1') of claim 9, wherein the resilient retain arrangement comprises a detent mechanism and a protrusion or a recess configured to be engaged by the detent mechanism.

11. The electric door lock unit (1') of any preceding claim, wherein the selector lever member (32') is elongated and the transmission assembly (30') is configured such that the electric actuator (20') may interact with the selector lever member (32') at a distal section thereof in relation to the fulcrum of the selector lever member (32'), and the hub follower (31') may interact with the selector lever member (32') at a proximal section of the selector lever member (32').

Images