A DOOR HANDLE DEVICE AND A DOOR COMPRISING SUCH A DOOR HANDLE DEVICE

Abstract

 A door handle device (10) for operating a latch (11) of a door, comprising a first spindle (15) and a second spindle (16), wherein the first spindle (15) is arranged for connection to the latch (11) and to a first handle (13) for operation of the latch (11) through rotation of the first handle (13), and wherein the second spindle (16) is arranged for connection to a second handle (14). The handle device (10) comprises an axially displaceable engaging device (17) being displaceable between a first position, in which the second spindle (16) is rotationally disengaged from the first spindle (15), and a second position, in which the second spindle (16) is rotationally engaged with the first spindle (15), so that the second spindle (16) is selectively connectable to the first spindle (15) for operation of the latch (11) through rotation of the second handle (14).

Description

FIELD OF THE INVENTION

[0001] The present invention relates to a door handle device. More specifically, the present invention relates to a door handle device for operating a latch of a door. Such door handle devices comprise at least one spindle operated by handles, such as lever handles, or door knobs, connected to the spindle for operating a latch which is used to keep the door shut. When the handle is rotated, the spindle can be rotated to retract the latch inside the door allowing the door to be opened. Such handle devices are commonly used for doors in different types of buildings, such as residential houses, commercial buildings and public buildings, for external doors as well as internal doors. The present invention is also related to a door comprising such a handle device.

PRIOR ART

[0002] There is a plurality of different types of door handle devices for operating a latch of a door in the prior art. One such type of door handle device comprises an inner handle and an outer handle, wherein the inner handle is always operably connected to the latch while the outer handle only is operably connected to the latch by using an electronic key.

SUMMARY OF THE INVENTION

[0003] An object of the invention is to provide a door handle device for operating a latch of a door by means of first and second door handles, wherein the second door handle is selectively engageable with the latch and which door handle device results in an efficient and reliable operation for selectively engaging the second door handle with the latch.

[0004] The present invention relates to a door handle device for operating a latch of a door, comprising a first spindle and a second spindle, wherein the first spindle is arranged for connection to the latch and to a first handle for operation of the latch through rotation of the first handle, and wherein the second spindle is arranged for connection to a second handle, characterised in that the handle device comprises an axially displaceable engaging device being displaceable between a first position, in which the second spindle is rotationally disengaged from the first spindle, and a second position, in which the second spindle is rotationally engaged with the first spindle, so that the second spindle is selectively connectable to the first spindle for operation of the latch through rotation of the second handle. As the second spindle can be rotationally engaged with the first spindle for transferring rotational forces from the second spindle to the first spindle by means of the axially displaceable engaging device a simple and reliable door handle device is provided, which results in easy and effective engagement and disengagement of the second handle so as to selectively allow or prevent operation of the latch through the second handle. Hence, the door handle device can easily and reliably be set between a first position, in which opening of the door by means of the second handle is prevented, and a second position, in which the door can be opened by means of the second handle. Simultaneously, the first spindle can be connected to the latch at all times, so that the door always can be opened by means of the first handle. For example, the first handle is an inner handle, arranged on an interior side of a door, wherein the second handle can be an exterior handle, arranged on an exterior side of a door. The structure of the door handle device allows the mechanism for engaging and disengaging the second handle to be arranged within a door leaf, so that tampering thereof is prevented and also makes it possible to hide that the door has a mechanism, e.g. corresponding to an electronic lock, for engaging and disengaging the second handle. Hence, the door handle device can be arranged as a locking device for locking the door from one side, which locking device can be electronic and can be hidden within the door leaf. The door handle device can comprise the first and second handles, and optionally also the latch.

[0005] The door handle device can be selectively set in the first and second positions by means of a motor, such as a conventional electric motor, solenoid or other electromechanical unit, which motor can be controlled by means of a conventional wireless electronic device, such as an electronic key, a smartphone, etc. Hence, the door handle device can easily be operated to allow opening of the door by means of the second handle or prevent opening of the door by means of the second handle. The door handle device could also be set manually to engage and disengage the second door handle.

[0006] The engaging device can be arranged to be locked in the first position, e.g. by means of an actuator, to prevent axial displacement thereof towards the second position. Further, the engaging device can be spring biased towards the second position, wherein the displacement from the first position to the second position is provided by a spring when the engaging device is not locked in its first position but is allowed to be displaced to its second position. Hence, a mechanical safety mechanism is provided, wherein no damage is incurred to any components of the door handle device even in a case where the engaging device cannot be displaced to engage the second spindle when operated by the motor to do so, e.g. due to the second spindle being rotationally offset in relation to the engaging device, such as when the second handle is pushed down while the motor is operated to displace the engaging device to the second position.

[0007] The engaging device can comprise a sleeve having an aperture for receiving a portion of at least one of the first and second spindles to form a rotationally engaged connection between them when the engaging device is in the second position. Hence, said sleeve is displaceable so that said part of one or both of the spindles are fitted in the aperture when the engaging device is in its second position and so that said part of one or both of the spindles are released from the aperture when the engaging device is in its first position. For example, said part of one or both of the spindles and the aperture have a shape for rotational engagement, such as square shape. Consequently, a safe and reliable mechanical connection for transferring rotational power between the first and second spindles is provided when the engaging device is in its second position and a simple and effective mechanism for engaging and disengaging the second spindle from the first spindle is achieved.

[0008] At least one of the first and second spindles and the aperture of the sleeve can be arranged so that one or both of the spindles, in a default position of the second handle, are receivable in the aperture to form the rotationally engaged connection, wherein one or both of the spindles are prevented from being received in the aperture to form the rotationally engaged connection at least when the second spindle is rotationally offset from the first spindle. By such a structure a safe mechanism is provided which is difficult to tamper and which is not damaged easily.

[0009] The sleeve can be connected to a radial projection through at least one connection element extending along the first spindle. Hence, the engaging device can comprise axially spaced apart components, such as the sleeve and the radial projection. The connection element can be arranged in a groove in the first spindle. Hence, the connection element is recessed into the first spindle, wherein the first spindle can rotate to operate the latch in a conventional manner. Alternatively, the connection element can be arranged in an axial hole in the spindle and protrude at specific positions to engage the sleeve and radial projection.

[0010] The radial projection can be arranged to slide along at least a slanted surface of an actuator to displace the engaging device in the axial direction, which actuator can be displaceable by means of the motor, solenoid or electromechanical unit. The actuator can be displaceable in the radial direction, such as vertically, between a first position to lock the engaging device in its first position, and a second position to allow the engaging device to be displaced to its second position by means of the spring. Alternatively, the engaging device, e.g. the sleeve, connection element or the radial projection, can be controlled directly by the motor, solenoid or electromechanical unit, or be operated manually.

[0011] The present invention is also related to a door comprising the door handling device wherein the engaging device is arranged inside a door leaf of the door. Also, the actuator and motor or solenoid can be arranged within the door, such as within the door leaf, so that tampering of the engaging device is prevented. Also, it can be visually hidden that the door is provided with a door handle device according to the present invention.

[0012] Further characteristics and advantages of the present invention will become apparent from the description of the embodiments below, the appended drawings and the dependent claims.

SHORT DESCRIPTION OF THE DRAWINGS

[0013] The invention will now be described more in detail with the aid of embodiment examples and with reference to the appended drawings, in which

Fig. 1 is a schematic perspective view of a door handle device for operating a latch according to one embodiment, wherein a displaceable engaging device is in a first position, in which a first handle is operably connected to the latch, and a second handle is operably disengaged from the latch,

Fig. 2 is a schematic view according to Fig. 1, illustrating rotation of the second handle when the engaging device is in its first position, wherein operation of the latch by means of the second handle is prevented,

Fig. 3 is a schematic view according to Fig. 1, illustrating rotation of the first handle to operate the latch when the engaging device is in its first position,

Fig. 4 is a schematic perspective view of the door handle device of Fig. 1, illustrating displacement of the engaging device towards a second position,

Fig. 5 is a schematic perspective view of the door handle device of Fig. 1, illustrating the engaging device in its second position, wherein the second handle is operably connected to the latch, and

Fig. 6 is a schematic perspective view of the door handle device of Fig. 5, illustrating rotation of any of the first and second handles when the engaging device is in its second position, wherein the first and second handles are operably connected to the latch.

THE INVENTION

[0014] Referring to Fig. 1 a door handle device 10 for operating a latch 11 of a door is illustrated schematically. For example, the handle device 10 is arranged for operating the latch 11 of a conventional door, such as an external or internal door of a residential house, a residential apartment, a commercial building, a public building or similar. In the drawings, a latch case 12 and the latch 11 are indicated transparently to illustrate components of the handle device 10 more clearly. For example, the latch 11 is a conventional latch, which is retractable into the latch case 12 to allow opening of the door.

[0015] The handle device 10 comprises a first handle 13 and a second handle 14. The handles 13, 14 are adapted to be arranged on opposite sides of a door leaf (not illustrated). For example, the first handle 13 is an interior handle, wherein the second handle is an exterior handle. Alternatively, the first handle 13 is an exterior handle, wherein the second handle is an interior handle. For example, the first and second handles 13, 14 are arranged on opposite sides of the latch case 12. The first and second handles 13, 14 are rotatable at least between a predetermined first position and a predetermined second position. In the illustrated embodiment, the first and second handles 13, 14 are lever handles. Alternatively, the first and second handles 13, 14 are door knobs.

[0016] The first handle 13 is connected to a first spindle 15 for rotating the spindle 15 by manual turning of the first handle 13. Hence, the first spindle 13 has an axis of rotation extending in the longitudinal direction of the first spindle 13. For example, the first handle 13 is attached to the first spindle 15 in a conventional manner. The first spindle 15 is connected to the latch 11, so that the latch 11 is retracted when the first handle 13 is rotated. For example, the first handle 13 is spring biased towards a default position in which the latch 11 is projecting from the edge portion of the door to keep the door closed. For example, the first spindle 15 is connected to the latch 11 in a conventional manner. For example, the first spindle 15 is formed for rotational engagement with the first handle 13. In the illustrated embodiment, the first spindle 15 has a square cross section. Alternatively, the first spindle 13 has a cross sectional form for engaging a corresponding recess in the first handle 13, such as a polygonal, oval, star or half-circular shape or similar to be fitted in a corresponding shape of the recess in the first handle 13. For example, the first handle 13 comprises a recess for receiving an end portion of the first spindle 15 in a conventional manner. Alternatively, the first spindle 15 is arranged with a recess for receiving a portion of the first handle 13 in a corresponding manner. In the illustrated embodiment, the first spindle 13 extends through the latch case 12.

[0017] The second handle 14 is connected to a second spindle 16 for rotating the second spindle 16 by manual turning of the second handle 14. Hence, the second spindle 16 has an axis of rotation extending in the longitudinal direction of the second spindle 16. In the illustrated embodiment, the second spindle 16 is arranged coaxial with the first spindle 15. For example, the second handle 14 is attached to the second spindle 16 in a conventional manner, such as in a corresponding manner as the first handle 13 is attached to the first spindle 15. Also, the second handle 14 is, e.g. spring biased towards a default position, which default position, e.g. corresponds to a latched position, such as a horizontal position for a lever handle.

[0018] The door handle device 10 further comprises an axially displaceable engaging device 17. The engaging device 17 is displaceable along an axial travel path between a first position and a second position, such as a first end position and a second end position. In Fig. 1 the engaging device 17 is in its first position. The engaging device 17 is arranged to selectively provide a rotationally engaged connection with the second spindle 16 for transferring rotational power from the second spindle 16 to the engaging device 17, which is described more in detail below.

[0019] In the illustrated embodiment, the engaging device 17 comprises a sleeve 18 having an aperture 19 corresponding to the shape of the second spindle 16 so as to be able to receive the second spindle 16 to form a rotationally engaged connection between them. Alternatively, the engaging device 17 comprises a plate having a radial projection for engaging a corresponding groove in the second spindle so as to provide a connection for transferring rotational power between the second spindle 16 and the engaging device 17. The sleeve 18 is enclosing an end portion of the first spindle 15. For example, the sleeve 18 is rotationally engaged with the first spindle 15 when the engaging device 17 is in its first position. Alternatively, the sleeve 18 is rotationally disengaged from the first and second spindles 15, 16 when the engaging device 17 is in its first position. The sleeve 18 is aligned with the first and second spindles 15, 16, wherein the sleeve 18 is arranged coaxial with the first and second spindles 15, 16. In an alternative embodiment (not illustrated), the second spindle 16 is provided with the sleeve 18, wherein the engaging device 17 is arranged to be fitted into said sleeve when displaced to its second position.

[0020] In the illustrated embodiment, the engaging device 17 also comprises a radial projection 20 connected to the sleeve 18 through a connection element 21. The connection element 21 extends along the first spindle 15, such as in the axial direction. In the illustrated embodiment, the connecting element 21 is arranged in a longitudinal groove 22 in the first spindle 15. Alternatively, the connecting element 21 is arranged in an internal channel inside the first spindle 16. Alternatively, the connecting element 21 extends externally of the first spindle 17, optionally with a gap to it. The connecting element 21 is formed as a rigid connection between the sleeve 18 and the radial projection 20, wherein a force in the axial direction applied to either of the sleeve 18 and the radial projection 20 is transferred to the other. For example, the connecting element 21 is formed as a bar, a wire or similar.

[0021] In the illustrated embodiment, the engaging device 18 also comprises a spring 23 for biasing the engaging device 17 towards a predetermined default position, such as the second position, e.g. in the axial direction towards the second handle 14.

[0022] The handle device 10 comprises a motor (not illustrated), such as a conventional electric motor, solenoid or similar, for operating the engaging device 17 between its first and second positions. For example, the motor is connected to a control unit having wireless communication means for controlling the motor through a wireless electronic device, wherein the motor and hence the operation of the engaging device 17 is controlled wirelessly by means of the wireless electronic device. For example, the wireless electronic device includes a smartphone, a personal computer, an Ipad, an RFID tag or similar for controlling the motor wirelessly, such as through a wireless communications system.

[0023] In the illustrated embodiment, the first handle 13 is connected to a first backplate 24, wherein the second handle 14 is connected to a second backplate 25, e.g. with return springs to keep the handles 13, 14 in a default position, such as horizontal position, when not operated. For example, the backplates 24, 25 are conventional backplates. According to one embodiment, one of the backplates 24, 25, such as the first backplate 24, is provided with a battery compartment (not illustrated) for housing a battery for powering the motor and the control unit. A separate electromechanical control unit including battery could also be attached to the door in between a conventional backplate 24 and the door leaf.

[0024] In the illustrated embodiment, the handle device 10 comprises a displaceable actuator 26 for operating the engaging device 17, wherein movement of the actuator 26 provides the axial movement of the engaging device 17. In the illustrated embodiment, the actuator 26 is displaceable in the radial direction, perpendicular to the travel path of the engaging device 17, such as vertically, between a first position and a second position, such as first and second end positions. Hence, the travel path of the actuator 26 is perpendicular to the travel path of the engaging device 17. The actuator 26 comprises a side towards the first handle 13 having a slanted surface 27 for sliding engagement with the engagement device 17 to displace the engagement device 17 in the axial direction when the actuator 26 is displaced in the radial direction. In the illustrated embodiment, the slanted surface 27 is arranged between a first surface 28 and a second surface 29 of the actuator 26 defining the first and second positions of the engaging device 17. For example, the first and second surfaces 28, 29 extend in radial planes being axially displaced in relation to each other. The radial projection 20 of the engaging device 17 is biased towards the side of the actuator 26 facing the first handle 13. Hence, the radial projection 20 is biased axially towards the slanted surface 27 or one of the optional first or second surfaces 28, 29. The radial projection 20 is engaging the side of the actuator 26 facing the first handle 13 and hence the slanted surface 27 or one of the optional first and second surfaces 28, 29. Hence, the radial projection 20 is a follower following the shape of the side of the actuator 26 directed towards the first handle 13. In the illustrated embodiment, the actuator 26 is formed with a through aperture 30, through which the first spindle 15 extends. The spindle 15 is rotatably arranged through the aperture 30. In the illustrated embodiment, the actuator 26 is connected to the motor through a gear rack 31.

[0025] With reference to Fig. 2 the engaging device 17 is in its first position and it is illustrated how the second handle 14 is rotated, i.e. pushed down in this case, without operating the latch 11. In the first position of the engaging device 17 the second spindle 16 is rotationally disengaged from the first spindle 15. Hence, the second spindle 16 can be rotated without transferring rotational forces to the first spindle 15 when the engaging device 17 is in its first position. As the second handle 14 is attached to the second spindle 16 the rotation of the second handle 14 is transferred to the second spindle 16. For example, the second spindle 16 is rotationally connected to the first spindle 15, such as by means of a threaded joint between the first and second spindles 15, 16, wherein the second spindle 16 is rotatable in relation to the first spindle 15 but attached thereto in the axial direction to prevent the second spindle 16 from being displaced unintentionally or in an undesired manner in the axial direction. Alternatively, the second spindle 16 is arranged pivotably in a bearing (not illustrated), such as a bearing arranged between the engaging device 17 and the second backplate 25. For example, the second spindle 16 comprises a first portion having a shape for rotationally engaging the aperture 19 and a second portion (not visible in the drawings) being rotationally arranged through the aperture 19 and into the first spindle 15 when the engaging device 17 is in its first position as illustrated in Figs 1-3.

[0026] As illustrated in Fig. 2, the second spindle 16 is rotated in relation to the engaging device 17, leaving the engaging device 17 unaffected by the rotation of the second spindle 16 by means of the second handle 14. Hence, the first portion of the second spindle 16, having a shape for locking engagement with the aperture 19, is arranged outside the aperture 19. In the illustrated embodiment, the sleeve 18 with the aperture 19 is axially displaced towards the first handle 13 in relation to said first portion of the second spindle 16, wherein the second spindle 16 is rotationally disengaged from the sleeve 18. Hence, operating the second handle 14 is not retracting the latch 11 and the door cannot be opened by means of the second handle 14.

[0027] With reference to Fig. 3 the engaging device 17 is in its first position and it is illustrated how the first handle 13 is rotated, i.e. pushed down in this case, to retract the latch 11 so that the door can be opened. The first handle 13 is attached to the first spindle 15 to transfer rotational forces from the first handle 13 to the first spindle 15. The first spindle 15 is operably connected to the latch 11, so that the latch 11 is retracted and extended from the latch case 12 by rotation of the first spindle 15. The first spindle 15 is rotated by means of the first handle 13. Hence, the latch 11 is operable through the first handle 13. For example, the latch 11 is always operable through the first handle 13 regardless of the position of the engaging device 17. For example, the engaging device 17 is arranged to rotate together with the first spindle 15. For example, the engaging device 17 is arranged to always rotate together with the first spindle 15. Alternatively, the engaging device 17 is disengaged from the first spindle 15 when the engaging device is in its first position.

[0028] With reference to Fig. 4 the door handle device 10 is illustrated schematically, wherein the engaging device 17 is in a position between the first and second positions. To allow operation of the latch 11 through the second handle 14, the engaging device 17 is displaced axially towards the second handle 14 and towards the second spindle 16, or at least towards the first portion of the second spindle 16, wherein the second spindle 16, or at least the first portion thereof, is received in the aperture 19 of the sleeve 18 for rotational engagement. To rotationally engage the second spindle 16 with the engaging device 17, so that the door can be opened by means of the second handle 14, the motor is activated by a person, e.g. by means of a wireless device. The motor displaces the actuator 26 in the radial direction, such as vertically, e.g. through the gear rack 31, wherein the radial projection 20 of the engaging device 17 slides against the slanted surface 27 of the actuator 26 to allow movement of the engaging device 17 axially towards the second handle 14 by means of the spring 23. If the second spindle 16, or at least the first portion thereof, is rotationally aligned with the aperture 19 of the sleeve 18 the second spindle 16, or said first portion thereof, is received in said aperture 19. If not, the engaging device 17 is not displaced as the sleeve 18 around the aperture 19 engages the second spindle 16 and prevents displacement of the engagement device 17. By further displacement of the actuator 26 by means of the motor the radial projection 20 is allowed to slide along the slanted surface 27 until the engaging device 17 reaches its second position, which is illustrated in Fig. 5. In Fig. 5, the actuator 26 has reached its second position, such as a lower end position, wherein the engaging device 17 is in its second position, such as an end position, axially displaced towards the second handle 13. As the second handle 13 was in its default position and the second spindle 16 was aligned with the aperture 19 the sleeve 18 is pushed further onto the second spindle 16, so that the first portion of the second spindle 16 is received in the aperture for rotational engagement therewith. For example, the sleeve 18 is always attached to the first spindle 15 in a rotationally engaged manner. Alternatively, the displacement of the sleeve 18 from the first position to the second position also results in a rotational engagement with the first spindle 15. Hence, in the second position of the engaging device 17 the second spindle 16 is rotationally engaged with the first spindle 15 by means of the sleeve 18, wherein rotation of any of the first and second handles 13, 14 rotates the first spindle 15 to operate the latch 11, which is illustrated in Fig. 6. Hence, when the engaging device 17 is in its second position the first and second spindles 15, 16 rotate as a single spindle. In the illustrated embodiment, the radial projection 20 is arranged in contact with the second surface 29 of the actuator 26 when the engaging device 17 is in its second position. The second surface 29 is axially displaced to the first surface 28 of the actuator 26 and is connected to the first surface 28 through the slanted surface 27. Hence, sliding the radial projection 20 from the first surface 28, along the slanted surface 27 to the second surface 29 allows axial displacement of the engaging device 17 if the second spindle 16 is rotationally aligned with the aperture 19 of the sleeve 18. When the engaging device 17 is in its second position the door can be opened by operating the second handle 14.

[0029] From the position illustrated in Fig. 6, the engaging device 17 is displaceable back to its first position to disconnect the second handle 14 from latch operation. To prevent the possibility of operating the latch 11 by means of the second handle 14 the motor is again activated, e.g. by a person through the wireless device, wherein the actuator 26 is displaced back to its first position. The displacement of the actuator 26 causes the radial projection 20 to slide along the slanted surface 27, which forces the radial projection 20 in the axial direction towards the first handle 13 and displaces the sleeve 18 connected to the radial projection 20 through the connection element 21 in the same direction until the engaging element 17 is in its first position. When the sleeve 18 is displaced towards its first position the second spindle 16, or at least the first portion of the second spindle 16, leaves the aperture 19 and rotationally disengages the second spindle 16 from the first spindle 15, so that rotational forces applied on the second handle 14 is not transferred to the first spindle 15. Also, when the engaging device 17 is displaced to its first position, the spring 23 is compressed so as to store energy for moving the engaging device 17 to the second position when allowed to do so by the actuator 26.

Claims

1. A door handle device (10) for operating a latch (11) of a door, comprising a first spindle (15) and a second spindle (16), wherein the first spindle (15) is arranged for connection to the latch (11) and to a first handle (13) for operation thereof through rotation of the first handle (13), and wherein the second spindle (16) is arranged for connection to a second handle (14),
characterised in that
the handle device (10) comprises an axially displaceable engaging device (17) being displaceable between a first position, in which the second spindle (16) is rotationally disengaged from the first spindle (15), and a second position, in which the second spindle (16) is rotationally engaged with the first spindle (15), so that the second spindle (16) is selectively connectable to the first spindle (15) for operation of the latch (11) through rotation of the second handle (14).

2. A device according to claim 1, wherein the engaging device (17) is displaceable between the first position and the second position by means of a motor or solenoid.

3. A device according to claim 2, wherein the motor is operable by means of a wireless electronic device to engage or disengage the second spindle (16) from the engaging device (17) by means of the wireless electronic device.

4. A device according to any of the preceding claims, wherein the engaging device (17) is spring biased towards the second position.

5. A device according to any of the preceding claims, wherein the engaging device (17) comprises a sleeve (18) having an aperture (19) for receiving a portion of at least one of the first and second spindles (15, 16) to form a rotationally engaged connection between them when the engaging device (17) is in the second position.

6. A device according to claim 5, wherein at least one of the first and second spindles (15, 16) and the aperture (19) of the sleeve (18) are arranged so that the spindle (15, 16), in a default position of the second handle (14), is receivable in the aperture (19) to form the rotationally engaged connection, wherein the spindle (15, 16) is prevented from being received in the aperture (19) to form the rotationally engaged connection at least when the second spindle (16) is rotationally offset from the aperture (19).

7. A device according to claim 5 or 6, wherein the sleeve (18) is connected to a radial projection (20) through at least one connection element (21) extending along the first spindle (15).

8. A device according to claim 7, wherein the connection element (21) is arranged in a groove (22) along the first spindle (15).

9. A device according to any of the preceding claims, wherein the engaging device (17) is operably connected to a displaceable actuator (26) for operating the engaging device (17), wherein the actuator (26) is displaceable in the radial direction between a first position and a second position.

10. A device according to claim 9, wherein the actuator (26) is formed with a slanted surface (27) for sliding engagement with the engagement device (17) to displace the engagement device (17) in the axial direction when the actuator (26) is displaced in the radial direction.

11. A device according to claims 10 and 7, wherein the radial projection (20) of the engaging device (17) is arranged for sliding along the slanted surface (27) of the actuator (26) when the actuator (26) is displaced between its first and second positions to provide the axial displacement of the engaging element (17) between its first and second positions.

12. A device according to any of the preceding claims, wherein the second spindle (16), in the first position of the engaging element (17), is rotatably connected to the first spindle (15) by means of a threaded joint.

13. A door comprising a door handle device (10) according to any of the preceding claims, wherein the engaging device (17) is arranged inside a door leaf of the door.

14. A door according to claim 13, comprising a battery for powering the operation of the engaging device (17).

15. A door according to claim 13 or 14, wherein the battery is arranged in a compartment formed between the door leaf and a backplate (24, 25) of the door handle device (10).

Drawing