SE542823C2

SE542823C2 - Door lock arrangement comprising elongated guiding element translatable in a longitudinal direction

Info

Publication number: SE542823C2
Application number: SE1851598A
Authority: SE
Inventors: Andreas Albèr
Original assignee: Electec System Ab
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2020-07-14
Also published as: EP3899175A1; NO20210745A1; EP3899175C0; WO2020130904A1; NO346869B1; EP3899175A4; SE1851598A1; EP3899175B1; SE544749C2; SE2050183A1

Abstract

A door lock arrangement (1) comprising an elongated guiding element (26) that is displaceable between a first position (401) and a second position (402) by translation in a longitudinal direction (406) thereof along an interior face (34) of the door lock arrangement (1).

Description

DOOR LOCK ARRANGEMENT COMPRISING ELONGATED GUIDING ELEMENT TRANSLATABLE IN A LONGITUDINAL DIRECTION TECHNICAL FIELD The present invention relates to door lock arrangements for mounting in doors. Some embodiments of the present invention relate to electric door lock arrangements, such as solenoid lock arrangements, solenoid locks, electric locks or the like. In particular, it is herein disclosed a door lock arrangement comprising an elongated guiding element.

BACKGROUND Door lock arrangements have a vast range of applications, such as at hotels, hospitals, offices or the like. For these applications, for example solenoid locks are particularly popular. A common type of solenoid locks is activated, e.g. unlocked, by means of a Radio Frequency Identification (RFID) tag, a magnetic card or the like. With a solenoid lock of this type, a locking mechanism of the solenoid lock cannot be operated through actuation of a door handle unless the solenoid lock is electrically activated (Power-To-Open type locking arrangements). Some solenoid locks allow the door handle to operate the locking mechanism without power and do instead require power to deactivate the door handle, i.e. the door is locked when electrically activated (Power-To-Lock type locking arrangements). These door lock arrangements also often include a knob for manually locking and unlocking the door, where the knob is only mounted at one side of the door, or the door lock arrangement.

A general problem with known solenoid door lock arrangements is that a housing thereof comprises many different lever arms and pivoting bodies. This makes space available for electronics to control and/or monitor the solenoid door lock arrangement severely limited. In future door lock arrangements, it is expected that further electronics will be built into the housing, e.g. in order to allow for e.g. sensors to register positions of different moving internal mechanism of the solenoid arrangements.

EP1354113 discloses a solenoid arrangement for controlling handle operation in a door lock, in which force transmission from an operation axis of a handle or the like to a follower acting on a bolt of the lock is arranged by means of a movable coupling member which receives its guidance from the solenoid arrangement. The arrangement includes a shaft element which is arranged to move through a solenoid against the force of a spring and which moves a turnable lever member selecting the operating position of said coupling member. The position of the turning axis of the said lever member with regard to the coupling member is arranged to be selectively changed to provide a desired handle operation. The solenoid arrangement is further provided with a front plate through which a bolt of the lock is movable. A lock case of the solenoid arrangement is additionally provided with an operation axis, to which a follower is installed. The follower is turnably journaled to the lock case and acts on the bolt of the lock through a separate force transmission lever. A disadvantage is thus that space available for electronics is very limited.

SUMMARY In view of the above, an object may be to alleviate or at least reduce one or more of the abovementioned disadvantages and/or problems.

This object, and other objects, may be achieved by the independent claims appended herewith.

According to an aspect, there is thus provided a door lock arrangement for mounting in a door leaf.

The door lock arrangement comprises a faceplate mountable in the door leaf, and a mounting plate adapted to be received by the door leaf, wherein the faceplate and the mounting plate form a casing.

The casing comprises a rotatable gear arm adapted to translationally displace a latch bolt by rotation about a rotational axis perpendicular to the mounting plate, a lock hub adapted to receive a lock actuator spindle for manoeuvring the latch bolt, a hub arrangement adapted to allow the latch bolt to be controlled by actuation of a lever handle spindle, and an elongated guiding element that is displaceable between a first position and a second position by translation thereof in a longitudinal direction of the elongated guiding element.

The elongated guiding element is spring biased towards the first position in which the latch bolt protrudes out of the faceplate by that the latch bolt is spring biased. Additionally, the elongated guiding element, when located in the second position, is arranged to retract the latch bolt, and the elongated guiding element comprises a lock actuation element at a first end thereof in proximity of the lock hub. The lock actuation element is further arranged to convert rotation of the lock hub to a translational movement of the elongated guiding element from the first position.

Moreover, the elongated guiding element comprises a bolt displacing element at a middle portion thereof in proximity of the rotational axis of the gear arm, wherein the bolt displacing element is arranged to convert the translational movement of the elongated guiding element to a rotation of the gear arm. The elongated guiding element also comprises a lever actuation element at a second end thereof in proximity of the hub arrangement, wherein the lever actuation element is arranged to convert rotation of the hub arrangement to the translational movement of the elongated guiding element.

The elongated guiding element is displaceable along an interior face of the casing in accordance with the translational movement and the interior face is opposite to the faceplate of the door lock arrangement.

Thanks to that the elongated guiding element is adapted to be transversally movable along the interior face of the casing, space inside the casing is made available for use by electronics, such as a printed circuit board. Moreover, the elongated guiding element enables, at its second end, the hub arrangement to interact directly with the elongated guiding element. Furthermore, the elongated guiding element interacts, at the middle portion thereof, indirectly with the bolt, via the gear arm. In this manner, the transversal movement of the elongated guiding element along the interior face is translated to a transversal movement of the bolt along in parallel with a geometrical axis that is perpendicular to a main plane of a faceplate of the door lock arrangement. Space requiring pivotal or tilting movements, usually occurring at levers or arms connected to the hub arrangement, are in this fashion effectively avoided, or at least movement of e.g. the elongated guiding element is made much less space requiring. Consequently, the door lock arrangement exposes a relatively large free space that may accommodate electronics. As a result, at least one of the aforementioned objects is achieved by the door lock arrangement, having the elongated guiding element that is transversally movable along the interior face of the casing between the first and second positions.

BRIEF DESCRIPTION OF THE DRAWINGS The various aspects of embodiments disclosed herein, including particular features and advantages thereof, are explained in the following detailed description and the accompanying drawings. The drawings are not to scale and any measures indicated are merely provided as examples for ease of understanding.

Figure 1 is an overview illustrating a door in which an exemplifying door lock arrangement is installed.

Figure 2 is a side view illustrating the door lock arrangement with connecting lever spindles and lever handles.

Figure 3 includes three views illustrating the exemplifying door lock arrangement.

Figure 4 includes views illustrating features relating to the elongated guiding element. Figure 5 illustrates an exemplifying gear arm according to some examples herein.

Figure 6 illustrates an exemplifying lock hub according to some examples herein.

Figure 7 is a cross-sectional view illustrating a printed circuit board mounted in the exemplifying door lock arrangement.

DETAILED DESCRIPTION Figure 1 illustrates a door lock arrangement 1 when installed, or mounted, in a door leaf 2, or door for short.

To the left in Figure 1, illustrating a plan view of the door leaf 2, it is shown that the door lock arrangement 1 comprises a first hub 4 for receiving a lock lever (not shown) and a second hub 6 for receiving a lever handle 8. The door leaf 2 is usually mounted in a door frame via hinges 9.

To the right in Figure 1, illustrating a cross-sectional view of the door leaf 2, it is shown that the door leaf 2 may be provided with one handle at each side of the door leaf 2, i.e. a first handle 8a and a second handle 8b.

Turning to Figure 2, a more detailed cross-sectional view of the door lock arrangement 1 is provided. As illustrated, the first hub 4 may be adapted to receive a lock actuator spindle 202 that may be connected to a knob 204 for manually manoeuvring the door lock arrangement. By use of the knob 204, opening and/or closing of the door may be enabled.

Additionally, the second hub 6 is adapted to receive at least one of a first lever handle spindle 206 and a second lever handle spindle 208. In turn, each of the first and second lever handle spindles 206, 208 may be connected to a respective lever handle, such as the first and second handles 8a, 8b.

Figure 3 shows, in a cross-sectional view and two different perspective views as enumerated from the left to right, an exemplifying door lock arrangement 1 according to some embodiments herein. The exemplifying door lock arrangement 1 includes all aspects disclosed herein for reasons of simplicity. It shall, however, be understood that the aspects disclosed herein may be implemented separately. Accordingly, there may be provided other door lock arrangements that include any one or more of the aspects of the present invention.

Generally, with reference to the cross-sectional view of Figure 3, the door lock arrangement 1 for mounting in the door leaf 2 comprises a faceplate 10 mountable in the door leaf 2, and a mounting plate 12 adapted to be received by the door leaf 2. The faceplate 10 comprises a first opening 52 adapted to receive an auxiliary latch bolt and a second opening 54 adapted to receive a bolt 18. The faceplate 10 and the mounting plate 12 forms a casing 14.

The casing 14 comprises a rotatable gear arm 16 adapted to translationally displace the bolt 18 by rotation about a rotational axis 20 perpendicular to the mounting plate 12. The bolt 18 may be a latch bolt, a dead bolt or the like depending on realization of the door lock arrangement 1. It is well known that some door lock arrangements include one or more bolts selected from a group comprising at least a latch bolt, a dead bolt and the like.

Moreover, the casing 14 comprises a lock hub 22 adapted to receive a lock actuator spindle 202 for manoeuvring the bolt 18. The lock hub 22 may typically connect to a knob for manually displacing the bolt 18, whereby opening of the door is possible in case being closed in the first place.

The casing 14 further comprises a hub arrangement 24 adapted to allow the bolt 18 to be controlled by actuation of a lever handle spindle, such as the first and second lever handle spindles 206, 208 as shown in Figure 2. The lever handle spindle may have a square cross-section. Therefore, the hub arrangement 24 may be a square hub arrangement.

The hub arrangement 24 may comprise a rower 25 adapted to receive the lever handle spindle, and a lever hub 29 adapted to at least partially enclose and receive the rower 25. In order to cooperate well with the hub arrangement 24 the rower may comprise a square-shaped cavity for receiving the lever handle spindle.

In one exemplifying embodiment of the door lock arrangement 1 of Figure 3, the casing 14 further comprises an elongated guiding element 26 that is displaceable between a first position 401 and a second position 402 by translation thereof in a longitudinal direction 406 of the elongated guiding element 26 as illustrated in Figure 4.

The elongated guiding element 26 is spring biased towards the first position 401 in which the bolt 18 protrudes out of the faceplate 10 by that the bolt 18 is spring biased. In Figure 4, spring biasing towards the first position is achieved by a spring 405.

The elongated guiding element 26 is arranged to retract the bolt 18, when the elongated guiding element 26 is located in the second position 402.

Moreover, the elongated guiding element 26 comprises a lock actuation element 28 at a first end 411 thereof in proximity of the lock hub 22. The lock actuation element 28 is arranged to convert rotation of the lock hub 22 to a translational movement of the elongated guiding element 26 from the first position 401, e.g. in a direction away from the first position. Preferably, a one-way conversion of the rotation of the loch hub 22 to translational movement of the elongated guiding element 26 is provided. In this manner, the lock hub 22 is not necessarily rotated when the elongated guiding element 26 is displaced from the first position 401 to the second position 402.

The elongated guiding element 26 comprises a bolt displacing element 30 at a middle portion 413 thereof in proximity of the rotational axis 20 of the gear arm 16, wherein the bolt displacing element 30 is arranged to convert the translational movement of the elongated guiding element 26 to a rotation of the gear arm 16.

The elongated guiding element 26 comprises a lever actuation element 32 at a second end 412 thereof in proximity of the hub arrangement 24, wherein the lever actuation element 32 is arranged to convert rotation of the hub arrangement 24 to the translational movement of the elongated guiding element 26.

The elongated guiding element 26 is displaceable along an interior face 34 of the casing 14 in accordance with the translational movement, wherein the interior face 34 is opposite to the faceplate 10 of the door lock arrangement 1. The interior face 34 may be parallel with the faceplate 10.

It may be noted that the elongated guiding element 26 may abut directly to the lock hub 22 at the first end 411 of the elongated guiding element 26, abut directly to the hub arrangement 24 at the second end 412 of the elongated guiding element 26 and abut directly to the gear arm 16 at the middle portion 413 of the elongated guiding element 26 between the first and second ends 411, 412. Typically, the gear arm 16 is adapted to displace the bolt 18 when rotated by translation of the elongated guiding element 26.

The elongated guiding element 26 may further be operable by means of actuation of the lever handle spindle 206, 208 and the lock actuator spindle 202 to be displaced between the first and second positions 401, 402. Hence, in this manner, the elongated guiding element may be displaced between the first and second positions 401, 402 according to operation be e.g. a user, a human, a person or any one attempting to open and/or close the door.

The lock actuation element 28 may comprise a fork 420 adapted to be received by at least one groove 850 of the lock hub 22 to convert the rotation of the lock hub 22 to the translational movement of the elongated guiding element 26. In this manner, the rotation of the lock hub 22 is efficiently converted to the translational movement of the elongated guiding element 26 while requiring a very limited amount of space in the casing 14. For example, the rotation of the lock hub 22 does not cause arms or levers to rotate, which normally would require relatively large amounts of space within the casing 14. The fork 420 together with said at least one groove 850 of the lock hub 22 forms an exemplifying mechanism to achieve the abovementioned one-way conversion.

The bolt displacing element 30 may comprise a projecting part 31 adapted to convert the rotation of the hub arrangement 24 to the translational movement of the elongated guiding element 26 to cause the bolt 18 to be retracted.

The lever actuation element 32 may comprise a first set of gear teeth 430 adapted to be received by a second set of gear teeth 910 of the lever hub 29 to convert the rotation of the lever hub 29 to the translational movement of the elongated guiding element 26. In this manner, clockwise or counter-clockwise rotation of the lever hub 29 may be transferred to the translation of the elongated guiding element 26, while only requiring the lever hub 29 and the elongated guiding element 26 to connect, or abut, with each other at one small section, e.g. 90 degrees or less, of an imaginary circle that is concentric with a rotational axis of the lever hub 29.

As described above, this means that the elongated guiding element 26 is arranged to be displaceable without rotation (from a first position 401) to a second position 402, in which the bolt 18 is retracted.

Again, the elongated guiding element 26 is arranged to be biased towards the first position 401 in which the lock hub 22 is in a first rotational hub position. When the lock hub 22 is rotated, e.g. by means of a knob, the lock hub 22 leaves the first rotational hub position, counter-clockwise or clockwise, while the elongated guiding element 26 at the same time is forced to leave its first biased position 401.

The lock hub 22 is connected to the guiding element 26 to provide a one-way conversion of spindle rotation to translational movement of the elongated guiding element, e.g. thanks to the aforementioned fork as an exemplifying realization.

Figure 5 illustrates the gear arm 16 according to an exemplifying realization. A lever portion 550 of the gear arm 16 is spaced away from the mounting plate in order to allow the printed circuit board to fit under the lever portion 550. The gear arm 16 comprises a projection 552 projecting from a cylindrical housing 554 enclosing the rotational axis 20 (shown in Figure 3) of the gear arm 16.

At a distal portion 556 of the gear arm 16, a preventing surface 558 is adapted to prevent that the bolt is locked in the extracted position when the elongated guiding element 26 is displaced towards its second position 402.

Figure 6 illustrates the lock hub 22 according to an exemplifying realization. In this example, the groove 850 extends along somewhat more than half of the circumference of the lock hub 22. Notably, the lock hub 22 comprises two abutting surfaces 852, 854, which are adapted to cause the elongated guiding element 26 to be displaced from its first position 401 when desired.

Figure 7 illustrates an exemplifying printed circuit board 752 which takes advantage of the space made available, amongst others thanks to the elongated guiding element 26. Other shapes of the exemplifying printed circuit board may be contemplated by the skilled person.

Figure 8 shows two plan views, to the left one of a known printed circuit board 754 using the space available in a known door lock arrangement, and to the right the printed circuit 752 board of Figure 7.

As used herein, the term "bias", "biased", "biasing" or the like may refer to mechanical biasing by means of a spring, a plate spring or the like.

Each embodiment, example or feature disclosed herein may, when physically possible, be combined with one or more other embodiments, examples, or features disclosed herein.

Even though embodiments of the various aspects have been described above, many different alterations, modifications and the like thereof will become apparent for those skilled in the art. The described embodiments are therefore not intended to limit the scope of the present disclosure.

Claims

1. A door lock arrangement (1) for mounting in a door leaf (2), wherein the door lock arrangement (1) comprises: a faceplate (10) mountable in the door leaf (2), and a mounting plate (12) adapted to be received by the door leaf (2), wherein the faceplate (10) and the mounting plate (12) form a casing (14) comprising: a rotatable gear arm (16) adapted to translationally displace a bolt (18) by rotation about a rotational axis (20) perpendicular to the mounting plate (12), a lock hub (22) adapted to receive a lock actuator spindle (202) for manoeuvring the bolt (18), a hub arrangement (24) adapted to allow the bolt (18) to be controlled by actuation of a lever handle spindle (206, 208), and an elongated guiding element (26) that is displaceable between a first position (401) and a second position (402) by translation thereof in a longitudinal direction (406) of the elongated guiding element (26), wherein the elongated guiding element (26) is spring biased towards the first position (401) in which the bolt (18) protrudes out of the faceplate (10) by that the bolt (18) is spring biased, wherein the elongated guiding element (26), when located in the second position (402), is arranged to retract the bolt (18), wherein the elongated guiding element (26) comprises a lock actuation element (28) at a first end (411) thereof in proximity of the lock hub (22), wherein the lock actuation element (28) is arranged to convert rotation of the lock hub (22) to a translational movement of the elongated guiding element (26) from the first position (401), the elongated guiding element (26) comprises a bolt displacing element (30) at a middle portion (413) thereof in proximity of the rotational axis (20) of the gear arm (16), wherein the bolt displacing element (30) is arranged to convert the translational movement of the elongated guiding element (26) to a rotation of the gear arm (16), the elongated guiding element (26) comprises a lever actuation element (32) at a second end (412) thereof in proximity of the hub arrangement (24), wherein the lever actuation element (32) is arranged to convert rotation of the hub arrangement (24) to the translational movement of the elongated guiding element (26), wherein the elongated guiding element (26) is displaceable along an interior face (34) of the casing (14) in accordance with the translational movement, wherein the interior face (34) is opposite to the faceplate (10) of the door lock arrangement (1).

2. The door lock arrangement (1) according to claim 1, wherein the elongated guiding element (26) is operable by means of actuation of the lever handle spindle (206, 208) and the lock actuator spindle (202) to be displaced between the first and second positions (401, 402).

3. The door lock arrangement (1) according to any one of the preceding claims, wherein the lock actuation element (28) comprises a fork (420) adapted to be received by at least one groove (850) of the lock hub (22) to convert the rotation of the lock hub (22) to the translational movement of the elongated guiding element (26).

4. The door lock arrangement (1) according to any one of the preceding claims, wherein the bolt displacing element (30) comprises a projecting part (31) adapted to convert the rotation of the hub arrangement (24) to the translational movement of the elongated guiding element (26) to cause the bolt (18) to be retracted.

5. The door lock arrangement (1) according to any one of the preceding claims, wherein the interior face (34) is parallel with the faceplate (10).

6. The door lock arrangement (1) according to any one of the preceding claims, wherein the hub arrangement (24) comprises a rower (25) adapted to receive the lever handle spindle, and a lever hub (29) adapted to at least partially enclose and receive the rower (25).

7. The door lock arrangement (1) according to the preceding claim, wherein the lever actuation element (32) comprises a first set of gear teeth (430) adapted to be received by a second set of gear teeth (910) of the lever hub (29) to convert the rotation of the lever hub (29) to the translational movement of the elongated guiding element (26).