Lockable door handle and door handle assembly having at least one lockable door handle

Abstract

The invention relates to a lockable door handle (1), comprising: a first housing (11) which has a first inner end and a first outer end arranged opposite one another; a first handle holder (12) which is arranged on the first inner end so as to be rotatable in the circumferential direction, and is designed to be connected to a door leaf; and a locking assembly which has a pivotable locking element (14) and a slide element (13) which is movable between a locking position and an unlocking position, wherein pivoting of the locking element (14) moves the slide element (13) into the locking position, in order to prevent rotation of the first housing (11), and backward pivoting of the locking element (14) moves the slide element (13) into the unlocking position, in order to allow rotation of the first housing (11).

Description

[0001] Lockable door handle and door handle assembly with at least one lockable door handle

[0002] The invention relates to a lockable door handle and a door handle arrangement with at least one lockable door handle.

[0003] Door handles and door handle sets are well known in terms of their function and construction. A door handle is a door accessory intended for mounting on a door or door leaf. The door handle actuates a locking mechanism provided in the door lock when opening and closing the door. For this purpose, a lock unit with a corresponding locking mechanism is usually incorporated into the door leaf.

[0004] Door handles with an integrated locking function are also known, hereinafter also referred to as lockable or lockable door handles, which can be locked by means of a locking element provided on the door handle, preferably by manual actuation thereof, in order to control the opening or closing of the door.

[0005] In addition to the locking element, known lockable door handles have one or more locking assemblies with a multitude of locking components, by means of which rotation of the door handle can be blocked or locked. However, known locking assemblies have the disadvantage of a complex structure, are easily damaged if repeatedly actuated, and do not have a visual indicator of the current locking status. Particularly in the absence of a visual indicator, the user cannot determine whether the door handle is locked or unlocked without actively manually operating the door handle.

[0006] Based on this, the invention is based on the object of creating a lockable door handle and an associated door handle assembly with a lockable door handle, which overcomes the disadvantages of the prior art and, in particular, enables a user to determine the locking state even without manually operating the door handle. A further object is to simplify the structure of the locking mechanism of the locking assembly and to design it with as little maintenance as possible. This object is achieved by a lockable door handle according to claim 1 and a door handle assembly with at least one lockable door handle according to claim 8. Further advantageous aspects, details, and embodiments of the invention emerge from the dependent claims, the description, and the drawings.

[0007] The invention relates to a lockable door handle, in particular a lockable doorknob comprising a first housing with a first inner end and a first outer end, which are arranged opposite one another, a first handle holder which is arranged so as to be circumferentially rotatable at the first inner end and is designed for connection to a door leaf, and a locking assembly. According to the invention, the locking assembly has a pivotable locking element and a sliding element which is movable between a locking position and an unlocking position, wherein pivoting of the locking element moves the sliding element into the locking position to prevent rotation of the first housing, and wherein pivoting back of the locking element moves the sliding element into the unlocking position to release rotation of the first housing.Particularly advantageously, the housing of the door handle is coupled to the first handle holder which can be connected to the door leaf in a rotationally fixed manner, thereby blocking rotation of the first housing, i.e. the first housing of the door handle is rotationally blocked in the locking position, and the rotation blocking is particularly advantageously achieved by means of a locking mechanism integrated in the door handle. Particularly preferably, the lockable door handle is designed in the form of a rotary handle or doorknob which has a preferably hollow-cylindrical first housing which extends along a longitudinal axis. The locking element is arranged on the front side of the doorknob and thus the current locking state can be easily identified based on the position of the locking element. The locking element is designed to be pivotable about a pivot axis running perpendicular to the longitudinal axis, whereas the sliding element is movable along the longitudinal axis, i.e. axially.

[0008] Further advantageously, the sliding element has a

[0009] The first housing has a locking portion, and the first handle holder has a receiving opening corresponding to the locking portion. To lock the first housing, the locking portion engages in the corresponding receiving opening when the sliding element is moved into the locking position. This particularly advantageously enables a simple and reliable rotational locking of the door handle, which is preferably designed in the form of a doorknob.

[0010] In an advantageous development of the invention, the sliding element has at least one first mounting groove formed on the outer circumferential side, and the first housing has at least one first mounting section formed on the inside of the first housing for receiving in the first mounting groove. The sliding element is slidably mounted on the inside of the first housing by means of the first mounting groove in conjunction with the first mounting section. This particularly advantageously creates a rotationally fixed connection between the first housing and the sliding element while still allowing axial displacement relative to one another.

[0011] In a particularly preferred embodiment of the invention, the locking element is pivotably mounted about its centerline on the first outer end of the first housing and has a locking portion and an unlocking portion, which are arranged opposite one another relative to the centerline. Particularly preferably, the locking portion is connected to the sliding element in such a way that pressing the locking portion pivots the locking element, thereby moving the sliding element into the locking position, and pressing the unlocking portion moves the sliding element back into the unlocking position. This provides a particularly reliable and low-maintenance locking mechanism.

[0012] Furthermore, the locking element can advantageously have a rotary channel running along its center line, wherein the ends of the rotary channel are provided with locking elements and two of the locking elements in the rotary channel are connected to one another via a spring. A locking recess corresponding to a locking element can be formed at the first outer end, wherein the locking element is rotatably received in the locking recess, so that the locking element is pivotably attached to the first outer end of the first housing along its center line. This particularly advantageously makes it possible to achieve a flush-mounted implementation of the locking element in a doorknob, wherein the locking element particularly preferably closes off the front of the first housing of the door handle. The front surface of the doorknob thus particularly advantageously forms a rocker switch for actuating the locking assembly.

[0013] According to advantageous developments of the invention, the first handle holder has a first through-opening and the first housing has a first adapter element adapted to the first through-opening, wherein one end of the first adapter element is connected to the first housing in a rotationally fixed manner. The other end of the first adapter element is received in the first through-opening so as to be rotatable in the circumferential direction, and the first adapter element has a first through-bore which extends in the axial direction to the first recess, wherein the first through-bore is designed to rotationally fixedly receive a connecting shaft in order to establish a rotationally fixed connection between the connecting shaft and the first housing. The adapter element enables a reliable, rotationally fixed and axially stable connection between the connecting shaft and the first housing.

[0014] Further advantageously, the first handle holder is provided with a mounting seat on one side toward the first outer end, wherein the mounting seat is designed to receive the first adapter element and has a mounting recess. The mounting seat is fitted in a rotationally fixed manner into the first housing, and wherein one end of the first adapter element is firmly received in the mounting recess in order to firmly connect the end of the first adapter element to the first housing. This further increases the axial stability of the connection.

[0015] Preferably, the mounting seat has a locking bore extending from the peripheral side to the mounting recess, and the first housing is provided with a first bore corresponding to the locking bore, so that a locking pin can be inserted through the locking bore and the first bore into one end of the first adapter element, thereby securing the end of the first adapter element in the mounting recess. This achieves a particularly resilient, rotationally fixed connection between the adapter element and the first housing, which reliably prevents damage to the lockable door handle due to actuation in the rotationally blocked state.

[0016] The invention also relates to a door handle assembly comprising an aforementioned lockable door handle, which additionally has a non-lockable door handle which comprises a second housing and a second handle holder, wherein the second housing has a second inner end and a second outer end which are opposite one another, and wherein the second handle holder is arranged rotatably in the circumferential direction at the second inner end of the second housing and is designed for connection to a door leaf, and wherein the first housing and the second housing are connected to one another in a rotationally fixed manner via the opposite ends of a connecting shaft. The door handle assembly can be locked from the inside of the door via the lockable door handle.By locking the first housing against rotation on the first handle holder, the second housing is automatically locked against rotation via the non-rotatable connection via the connecting shaft.

[0017] In a particularly preferred embodiment, the connecting shaft is hollow and has an unlocking shaft which is received in the connecting shaft so as to be axially displaceable. The second outer end of the second housing further has an unlocking bore which corresponds to the unlocking shaft, and the sliding element has a through-bore through which the unlocking shaft is guided and connected to the locking element. Particularly advantageously, the locking element can be actuated by displacing the unlocking shaft from the outside, i.e. via the unlocking bore in the axial direction, and thus an emergency unlocking of the lockable door handle 1 can take place. The integration of the unlocking shaft for the direct unlocking of the locking element is particularly reliable and easy to operate.

[0018] In summary, the lockable door handle and the door handle assembly to which it is attached have the following technical advantages compared to the prior art: In the unlocked state, the sliding element is moved into the locking position by the pivoting movement of the locking element to prevent rotation of the first housing. In the locked state, the sliding element is moved back into the unlocking position by the pivoting movement of the locking element to allow rotation of the first housing. The user can intuitively determine whether the door handle is in the locked or unlocked state based on the tilt position of the locking element, due to the angular difference between the plane in the unlocked state and the locked state.The lever principle is used to lock and unlock the locking element in order to make the locking and unlocking process more convenient, reliable and easier.

[0019] A particularly advantageous feature is that a high number of actuation cycles is possible without any noticeable wear of the locking mechanism.

[0020] Further developments, advantages, and possible applications of the invention will become apparent from the following description of exemplary embodiments and from the figures. All described and / or illustrated features, individually or in any combination, are fundamentally part of the invention, regardless of their summary in the claims or their reference back to them. The content of the claims is also incorporated into the description.

[0021] Short description of the drawings

[0022] The invention will be explained in more detail below using exemplary embodiments in conjunction with the drawings.

[0023] Fig. 1 is a perspective view of an embodiment of a lockable door handle according to the invention,

[0024] Fig. 2 is an exploded view of an embodiment of a lockable door handle according to the invention,

[0025] Fig. 3 is a perspective view of a further embodiment of a lockable door handle according to the invention, Fig. 4 is a cross-sectional view of the lockable door handle according to Figure 3,

[0026] Fig. 5 is an exploded view of an embodiment of a door handle arrangement with at least one lockable door handle according to the invention,

[0027] Fig. 6 is a perspective view of the second handle holder and the second adapter element in an alternative embodiment according to the invention,

[0028] Fig. 7 is a cross-sectional view of the second handle holder and the second adapter element,

[0029] Fig. 8 is an exploded view of the second handle holder and the second adapter seat,

[0030] Fig. 9 is an exploded view of another embodiment of the door handle assembly.

[0031] Identical reference numerals are used in the figures for identical or equivalently functioning elements of the invention. Furthermore, for the sake of clarity, only those reference numerals necessary for the description of the respective figure may be shown in the individual figures. The invention is also illustrated by way of example in the figures using schematic views to explain the basic principle of the invention.

[0032] The following embodiments of the invention represent only a portion of the possible embodiments of the invention. Starting from the described embodiments of the invention, all further embodiments fall within the scope of the invention that would be considered encompassed by a person skilled in the art without creative effort. Reference to "an embodiment" merely means that a specific feature, structure, or property associated with an embodiment can be used in at least one embodiment of the invention; that is, the inventive concept is in no way limited to the described embodiment. Features, structures, or properties of an embodiment can be combined in any suitable manner with one or more further embodiments.

[0033] When describing the invention, it should be noted that the terms "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "inside," "outside," etc., denote an orientation or positional relationship that relates to the embodiment shown in the accompanying drawings. The orientation or positional relationship is provided solely to facilitate and simplify the description of the invention and is not intended to indicate or imply that the device or feature referred to must necessarily have a particular orientation or be constructed and operated in a particular orientation. Therefore, the inventive concept is in no way limited by the terms mentioned.

[0034] Unless otherwise defined in the application documents, all technical and scientific terms used herein have the meaning that a person skilled in the art would assign to them. The terms used in the description of the invention are used to describe the various embodiments and therefore do not limit the scope of the invention.

[0035] Figures 1 to 2 show, by way of example, a first embodiment of a lockable or lockable door handle 1 according to the invention from two different perspectives. Figure 1 shows a perspective view of the front of the door handle 1 in the assembled state, and Figure 2 shows a perspective view of the rear of the door handle 1 in an exploded view. The door handle 1 can be part of a door handle set or arrangement comprising two door handles 1, 2, wherein preferably only one door handle 1 is designed to be lockable. Figures 3 to 5 and 9 show, by way of example, a door handle arrangement comprising a lockable door handle 1 and a further door handle 2, which are each connected to one another via a connecting shaft 3 to establish an operative connection. The connecting shaft 3 is preferably formed by an elongated square pin.The second door handle 2 preferably has an unlocking device for emergency unlocking of the lockable door handle 1 from the outside.

[0036] According to the invention, the door handle 1 comprises at least a first, preferably cylindrical housing 11 with a first inner end and a first outer end, wherein the housing 11 extends along a longitudinal axis LA and the wall of the housing 11 preferably runs concentrically around the longitudinal axis LA. The door handle 1 preferably forms a cylindrical doorknob, the outer surface of which particularly preferably has a knurling. The cylindrical housing 11 is particularly preferably designed as a hollow cylinder with an outer and inner surface. In the assembled state, the first inner end of the first housing 1 faces the door leaf, whereas the first outer end points away from the door leaf.

[0037] The door handle 1 further comprises a first handle holder 12, which is arranged at the first inner end of the housing 11 and is provided for a rotationally fixed connection to a door leaf (not shown in the figures). The first housing 11 is arranged on the first handle holder 12 so as to be rotatable in the circumferential direction, and the first housing 11 is preferably provided on the first handle holder 12 so as to be rotatable about the longitudinal axis LA. The first handle holder 12 is, for example, annular. The first handle holder 12 also has a first, preferably central, through-opening 120 through which the connecting shaft 3 can be passed.

[0038] The door handle 1 further comprises at least one locking assembly that prevents rotation of the first housing 11 mounted on the first handle holder 12 about the longitudinal axis LA. For this purpose, the locking assembly has at least one sliding element 13 that can be displaced along the longitudinal axis LA and a locking element 14 that can be rotated or pivoted about a rotation or pivot axis, wherein the locking element 14 can be transferred from a locking position to an unlocking position and vice versa, and the sliding element 13 can also be displaced along the longitudinal axis LA. For this purpose, the sliding element 13 and locking element 14 are operatively connected to one another in such a way that rotating or pivoting the locking element 14 about the rotation or pivot axis causes a movement of the sliding element 13, preferably along the longitudinal axis LA.Particularly preferably, the rotation or pivot axis extends along a center line or center axis of the locking element 14 or coincides with it.

[0039] The locking element 14 is preferably designed like a rocker or switch, i.e. in the form of a locking rocker or locking switch which is designed to be pivotable or rotatable about its center line or center axis. The locking element 14 comprises, for example, a substantially disc-shaped base body with at least one flat actuating surface which forms the end face of the first housing 11 of the door handle. In the unlocking position, the flat actuating surface preferably runs perpendicular to the longitudinal axis LA and in the locking position, i.e. in the tilted or pivoted position, preferably forms an acute angle with the longitudinal axis LA. The locking element 14 particularly preferably forms the end face of the door handle 1 designed in the form of a doorknob.

[0040] The rotatable or pivotable locking element 14, which is at least partially received in the first outer end of the housing 11, is thus designed to be pivotable between the locking position and the unlocking position for locking the door handle 1, wherein pivoting of the locking element 14 moves it at least on one side toward the first housing 11. In the locking position, rotation of the first housing 11 about the longitudinal axis LA is blocked, while in the unlocking position, rotation of the first housing 11 about the longitudinal axis LA is released again.

[0041] The sliding element 13 is received in the first housing 11 in a rotationally secure manner, preferably in a form-fitting and complete manner. To lock the sliding element 13 and thus the door handle 1 to the first handle holder 12, the sliding element 13 has a latching section 131 which projects in the direction of the first handle holder 12 and which protrudes like a nose from the sliding element 13 along the longitudinal axis LA, i.e. extends in the direction of the first inner end of the first housing 11. The first handle holder 12 has at least one preferably slot-like receiving opening 121 which is designed to at least partially receive the latching section 131 in a form-fitting manner. By pivoting the locking element 14, the sliding element 13 is brought into a locking position in which the latching section 131 engages in the receiving opening 121 and thereby locks the first housing 11 to the first handle holder 12.

[0042] In one embodiment, at least one first mounting groove 132 is formed on an outer circumferential side of the sliding element 13. Furthermore, the first housing 11 has on its inner side at least one first mounting section 111 which projects radially inward from the inner side and which is adapted in terms of its shape and radial extent to the first mounting groove 132 of the sliding element 13, so that a preferably form-fitting reception of the first mounting section 111 in the first mounting groove 132 is possible. The sliding element 13 is slidably mounted or guided in the first mounting groove 132 along the longitudinal axis LA via the first mounting section 111 of the first housing 11 and can therefore be displaced within the first housing 11 along the longitudinal axis LA.

[0043] The sliding element 13 preferably has at least two locking sections 131 on its outer peripheral side, between which the at least one first mounting groove 132 is formed. Preferably, the first mounting section 111 extends uniformly along the first housing 11 and is arranged on the inside or inner surface of the first housing 11.

[0044] In particular, the locking element 14 is pivotably or rotatably connected to the first outer end of the first housing along its center line, which is the center line perpendicular to the horizontal plane in which the locking element 14 is arranged in the unlocked state. The locking element 14 comprises a locking portion 141 and an unlocking portion 142, which are located opposite one another with respect to the center line. The locking portion 141 is coupled to the sliding element 13, and the locking element 14 has a rotation channel arranged along the center line with two opposite, open ends.

[0045] A preferably cylindrical locking element 145 is received in each of the two opposite, open ends of the rotation channel. Both locking elements 145 are connected to one another via a spring 1451, in such a way that the locking elements 145 are pressed out of the rotation channel at least in sections and protrude radially from the edge of the locking element 14. The spring connection enables the locking elements 145 to be returned to the rotation channel against the spring force or clamping force generated by the spring 1451.

[0046] For rotatably receiving the locking elements 145 at the first outer end of the first housing 11, a locking recess 1121 is provided on the inside or inside edge of the first housing 11. The outwardly projecting, free ends of the locking elements 145 are rotatably received in the locking recess 1121 in the assembled state, so that the locking element 14 is rotatably or pivotably attached to the first housing 11, specifically about the center line or the rotation or pivot axis. Thus, the locking element 14 can be pivoted about the center line from the locking position to the unlocking position, i.e., the locking section 141 and the unlocking section 142 can be pivoted accordingly.

[0047] The first outer end of the first housing 11 is preferably secured with a snap ring 112 and in the region of the snap ring 112 the locking recess 1121 is provided, which is preferably formed by a circular bore.

[0048] Furthermore, the locking element 14 is provided with a coupling bore 140, which runs parallel to the center line of the locking element 14 in the region of the locking section 141, and the sliding element 13 is formed with a connecting section 133 for connection to the coupling bore 140. The connecting section 133 further has a connecting bore 1331, which corresponds to the coupling bore 140 and is aligned therewith in the assembled state. By inserting a rod-shaped coupling element 144 into the mutually aligned coupling bore 140 and connecting bore 1331, an articulated connection can be established between the locking section 141 of the locking element 14 and the sliding element 13.

[0049] On the outside of the locking element 14, a covering plate 143 is provided, wherein the covering plate 143 has a locking mark in the locking section 141 and an unlocking mark in the unlocking section 142. The locking mark and unlocking mark are designed to differ from one another in terms of orientation, color, thickness, or other optical or haptic properties. For example, the locking mark extends parallel to the center line and the unlocking mark perpendicular to the center line, so that the locking mark and unlocking mark can be adjusted vertically relative to one another. This makes them easier for a user to use and also makes it easier for a user to distinguish the locking section 141 and the unlocking section 142 from one another.

[0050] The locking mark can also be red and the unlocking mark white, making it easier for the user to intuitively distinguish the locking portion 141 from the unlocking portion 142. Of course, both the adjustment direction and the color can be different. There are no restrictions regarding the design of the locking mark and the unlocking mark, as long as the functional adjustment method is maintained.

[0051] In particular, the first handle holder 12 is provided with a first through-opening 120 and a first adapter element 15 is provided, one end of the adapter element 15 being received in the through-opening 120 and the other end in the first housing 11. The first adapter element 15 is rotatably received in the first through-opening 120 about the longitudinal axis LA. Furthermore, the first adapter element 15 has a first through-bore 150 which is designed to rotationally secure the connecting shaft 3. In the assembled state, the connecting shaft 3 is guided through the first through-bore 150 and is thus rotationally secure to the first adapter element 15. For this purpose, the connecting shaft 3 and the first through-bore 150 have the same cross-sectional shape.

[0052] In order to fasten the further end of the first adapter element 15 to the first housing 11, a fastening seat 16 is provided, which is arranged on the side of the first tubular seat 12 facing the first outer end of the first housing 11. The fastening seat 16 is annular and encloses a fastening recess 160 designed to receive the further end of the first adapter element 15. The fastening seat 16 is received inside the first housing 11 and is firmly connected thereto, preferably in a rotationally fixed manner. The further end of the first adapter element 15 opposite the first handle holder 12 is also received in the fastening recess 160 in a rotationally fixed manner and is thus firmly connected to the fastening seat 16.

[0053] On the peripheral side of the mounting seat 16, at least one locking bore 1611 is provided, which extends radially to the longitudinal axis LA and to the mounting recess 160. The first housing 11 also has a first bore 110, which is aligned with the locking bore 1611. For the rotationally fixed connection of the first housing 11 to the mounting seat 16, a locking pin 163 is provided, which is guided through the first bore 110 and the locking bore 1611.

[0054] In particular, a plurality of locking bores 1611 can be provided on the peripheral side of the fastening seat 16, which are connected to the fastening recess 160, by means of which a rotationally fixed connection is established between the fastening seat 16 or the first adapter element 15 and the first housing 11.

[0055] To secure the peripheral side of the fastening seat 16 against rotation with the first

[0056] Housing 11 are to be connected to the mounting seat 16 several

[0057] Fastening sections 161, each with a connecting bore 1610, are provided, each extending axially along the first housing 11. The first mounting section 111 has mounting bores 1111 aligned with the connecting bores 1610, which also extend along the longitudinal axis LA of the first housing. By means of several mounting means 162, for example screw means, a detachable connection is established between the first housing 11 and the fastening seat 16, wherein for this purpose the mounting means 162 are inserted, in particular screwed, into the mounting bores 1111 aligned therewith, starting from the connecting bores 1610. As an alternative to screw means, in particular screws, other mounting means 162 can of course also be provided that fulfill a comparable fastening function.

[0058] Furthermore, not all fastening sections 161 can be equipped with connecting holes 1610, so that not all first mounting sections 111 are provided with mounting holes 1111, but only some of the first mounting sections 111 have mounting holes 1111. The number of mounting holes 1111 preferably corresponds to the number of connecting holes 1610.

[0059] In the assembled state, the first handle holder 12 is mounted on one side of the door leaf in such a way that the connecting shaft can be guided through the first through-opening 120 to establish a rotationally fixed connection with the first housing 11. The connecting shaft 3 extends from the first housing 11 through the first handle holder 12 and the door leaf to the opposite door handle 2.

[0060] By actuating the locking section 141, the latching section 131 is moved into the receiving opening 121 or out of it again, depending on the actuation of the locking section 141 or the unlocking section 142 of the locking element 14. In the locked state, the locking section 141 is pivoted in the direction of the first handle holder 12, and in the unlocked state, this is back in its original position, wherein the unlocked state is brought about by actuating the unlocking section 142, which also pivots back to its original position. In the unlocked position, the locking section 141 and the unlocking section 142 run in a plane running perpendicular to the longitudinal axis LA. The sliding element 13, which is operatively connected to the locking element 14, is pivoted about the center line or, due to the pivotable design of the locking element 14.When the locking section 141 is actuated, the central axis is also moved in the direction of the first handle holder 12, and when the unlocking section 142 is actuated, the central axis is moved away from the first handle holder 12 due to the lever principle. As a result, the locking section 131 of the sliding element 13 is moved into the receiving opening 121 and thereby locks the sliding element 13 to the first tube holder 12, so that the first housing 11 can no longer rotate relative to the first tube holder 12 and the door lock can no longer be activated.

[0061] To unlock, the unlocking section 142 is moved toward the first tube holder 12 or pivoted about the center line. Due to the lever principle, the locking section 131 of the sliding element 13 is moved out of the receiving opening 121, thereby releasing the rotationally fixed connection between the first tube holder 12 and the first housing 11 via the engaged sliding element 13. The first housing 11 can now be rotated again about the longitudinal axis LA relative to the first tube holder 12, thereby re-engaging the door lock.

[0062] Figures 3 to 5 show a second embodiment of the invention, namely a door handle arrangement comprising a lockable door handle 1 as described above, a non-lockable door handle 2 with a second housing 21 and a second handle holder 22, wherein the door handles 1, 2 are connected to one another in a rotationally fixed manner via a connecting shaft 3, namely the opposite free ends of the connecting shaft 3 are each connected to the first and second outer ends. The second housing 21, analogous to the first housing 11, is preferably cylindrical, in particular hollow-cylindrical, and has a second inner end and a second outer end which are opposite one another, wherein the second handle holder 22 is arranged at the second inner end so as to be rotatable in the circumferential direction and is designed for connection to the door leaf. The first housing 11 and the second housing 21 are thus firmly connected to one another.The lockable door handle 1 and the non-lockable door handle 2 are mounted on the opposite sides of the door leaf.

[0063] The connecting shaft 3 is connected to the door lock in such a way that the door lock can be actuated by rotating the lockable door handle 1 or the non-lockable door handle 2 about the longitudinal axis LA. This rotates the connecting shaft 3 and actuates the door lock.

[0064] In particular, the second handle holder 22 is provided with a second through-opening 220, wherein the connecting shaft 3 is guided through the first and second through-openings 120, 220 and the opposite free ends of the connecting shaft 3 are connected to the first and second housings 11, 21 in a rotationally fixed manner.

[0065] A second adapter element 25 is received in the second through-opening 220 so as to be rotatable in the circumferential direction, the second adapter element 25 having a second, preferably axial through-bore 2520 for the passage of the connecting shaft 3. In the assembled state, the second adapter element 25 is arranged axially in the second through-bore 2520 along the second through-opening 220, the second through-bore 2520 being provided on the side of the second adapter element 25 facing the second outer end, and the free end of the connecting shaft 3 is fastened to the second adapter element 25 in order to establish a holding relationship with the second housing 22.

[0066] In order to securely and rotatably fasten the first adapter element 15 to the first through-opening 120, a retaining ring groove is provided on the circumference of one end of the first adapter element 15 facing the second handle holder 22, into which a retaining ring 151 is inserted.

[0067] The exposed portion of the retaining ring 151 is secured to the first tube holder 12, creating a more stable mounting structure. Similarly, the second adapter element 25 is provided with a retaining ring 251 on the side facing the first tube holder 12 to enable secure rotation of the second adapter element 25 in the second through-opening 220. In the assembled state, the first handle holder 12 and the second handle holder 22 are each secured to one side of the door leaf, wherein a core hole provided in the door leaf corresponds to a cylinder hole for receiving a locking cylinder of the door lock, and fastening holes are provided on the two opposite sides of the core hole, preferably on the upper and lower sides of the core hole, respectively.

[0068] The first handle holder 12 further comprises a first connecting tube 122, and the second handle holder 22 comprises a second connecting tube 222, which are provided for receiving in the fastening holes in the door leaf. The first connecting tube 122 and the second connecting tube 222 are each inserted into the fastening holes from the opposite sides of the door leaf. A detachable screw connection is then established between the first and second handle holders 12, 22 and the door leaf via a screw sleeve and a screw bolt adapted thereto, with the door leaf being received between the two handle holders 12, 22. The screw sleeve can be inserted into either the first or the second connecting tube 122, 222.Accordingly, the screw bolt is then located in the remaining opposite connecting pipe 122, 222, wherein the said connecting means are adapted to the connecting pipes 122, 222 and the fastening holes in terms of length and diameter.

[0069] The locking section 141 is provided for moving the latching section 131 of the sliding element 13 into the receiving opening 121. To lock the lockable door handle 1, the locking section 141 is moved in the direction of the first handle holder 12, thereby pivoting the locking element 14 about the center line. The unlocking section 142 is moved away from the first outer end of the first housing 11 due to the lever principle. As a result, the sliding element 13 is moved in the direction of the first handle holder 12, so that the latching section 131 is inserted into the receiving opening 121. In this locked state, the sliding element 13 and the first handle holder 12 are connected to one another in a rotationally fixed manner, so that the first housing 11 can no longer be rotated relative to the first handle holder 12, and rotation of the connecting shaft 3 is thus also blocked. Operation of the door lock is therefore no longer possible.Due to the rotationally fixed connection with the connecting shaft 3, the second housing 21 can also no longer be rotated relative to the second handle holder 22.

[0070] To unlock, the unlocking section 142 is actuated to move the locking section 131 out of the receiving opening 121. For this purpose, the unlocking section 142 is moved toward the first handle holder 12, pivoting the locking element 14 about its centerline. Due to the lever principle of the locking element 14, the locking section 141 is thereby moved away from the first outer end of the first housing 11.

[0071] The rotation axis is attached to the first outer end of the first housing 11, so that the locking section 141 is moved away from the first outer end by the lever principle. As a result, the sliding element 13 is moved away from the first handle holder 12 and its locking section 131 is guided out of the receiving opening 121. The rotationally fixed connection between the first handle holder 12 and the sliding element 13 or the first housing 11 is thereby released, and the lockable door handle 1 is once again in the unlocked state. The first housing 11 can now be rotated again with respect to the first handle holder 12. The connecting shaft 3 is also rotatable again, so that the door lock can be actuated again. The lockable door handle 1 and the non-lockable door handle 2 are in the unlocked state and can be used to actuate the door lock.

[0072] In order to establish a rotationally fixed connection between the connecting shaft 3 and the second housing 22, a shaft holding element 23 is provided which is received in the second housing 22 in a rotationally fixed manner and has a shaft receptacle 230 for receiving the free end of the connecting shaft 3, which is designed in particular for the rotationally fixed reception of the connecting shaft 3. The shaft holding element 23 is introduced into the second housing 22 in a rotationally fixed manner and the free end of the connecting shaft 3 is inserted into the shaft receptacle 230, so that a rotationally fixed connection is created between the connecting shaft 3 and the second housing 22. The shape and size of the shaft receptacle 230 are adapted to the connecting shaft 3. In particular, the second housing 21 has a plurality of second mounting sections 211 which are formed on the inside of the second housing 21 and protrude radially inward therefrom.The peripheral portion of the shaft holding element 23 is adapted to receive the second mounting portions 211 in order to establish a rotationally fixed connection therewith. On the peripheral surface portion of the shaft holding element 23 opposite the second mounting portion 211, a second mounting groove 231 is formed, which is provided for receiving the second mounting portion 211.

[0073] Furthermore, the shaft holding element 23 has a plurality of locking bores 2310 that extend radially from the circumferential surface to the shaft receptacle 230. The locking bores 2310 are each designed to receive a locking shaft element 232, which is preferably implemented as a screw-shaped connecting means. A locking shaft element 232 is screwed into the locking bores 2310 so that the free end of the locking shaft element 232 rests against the circumferential side of the connecting shaft 3. This exerts pressure on the connecting shaft 3, which fixes the free end of the connecting shaft 3 in the shaft receptacle 230.

[0074] The locking bores 2310 for receiving the locking shaft elements 232 are preferably arranged between two adjacent second mounting grooves 231, preferably at four locking positions that are evenly distributed along the circumferential surface. This divides the shaft holding element 23 into four sections, so that the shaft holding element 23 is attached to the connecting shaft 3 from the left and right, as well as from the top and bottom. Pressure is thus exerted on the connecting shaft 3 from four directions, resulting in a stable mounting of the shaft holding element 23 at the free end of the connecting shaft 3. Furthermore, a locking bore 2310 is provided on the circumference of the shaft holding element 23 near the second tube holder 22.

[0075] In particular, the free end of the connecting shaft 3, which is accommodated in the shaft receptacle 230, is also provided with a mounting seat 26 to limit the axial displacement of the free end of the connecting shaft 3. This ensures a secure and fixed mounting of the shaft receptacle 230 on the connecting shaft 3.

[0076] In order to provide an emergency release for the door handle assembly in the locked state, it is necessary to be able to actuate the locking assembly located in the first housing 11 from the outside, specifically from the door side on which the non-lockable door handle 2 is mounted. For this purpose, an emergency release device is provided, which comprises at least one release shaft 31. For this purpose, the connecting shaft 3 is designed as a hollow shaft in which the release shaft 31 is accommodated so as to be displaceable in the axial direction.

[0077] At the outer end of the second housing 2 is a covering plate 24, which closes the front of the second housing 2. The covering plate 24 has an axial release bore 241 aligned with the longitudinal axis LA, to which one free end of the release shaft 31 is guided. The sliding element 13 has a through-bore 135 through which the other free end of the release shaft 31 is guided and connected to the locking element 14. The covering plate 24 is circular, and the release bore 241 is located in the region of the center of the circular covering plate 24. The shaft holder 230 has a threading opening aligned with the release bore 241, so that the free end of the release shaft 31 can be guided through the threading hole.

[0078] The functioning of the emergency release device is explained below using an example: In the locked state, the free end of the release shaft 31 is located in the release bore 241 or can be reached from the outside via this and extends through the threading hole. The diameter of the release shaft 31 is not greater than the diameter of the release bore 241. For emergency release, the release shaft 31 is pushed with a pointed object along the longitudinal axis LA in the direction of the locked door handle 1, namely through the connecting shaft 3 designed as a hollow shaft and through whose other free end the locking element 14 is actuated, in particular the locking assembly is transferred from the locked to the unlocked state. The free end of the release shaft 31 facing the locking element 14 comes into contact with the locking element 14 and this is activated.The unlocking section 142 is pivoted as previously described, and the locking element 14 thus returns to the unlocked position. The locking section 141 moves away from the first handle holder 12. The sliding element 13 is moved accordingly, and the locking section 131 is moved out of the receiving opening 121, whereby the sliding element 13 is released from the first handle holder 12 and transferred to the unlocked state.

[0079] Figures 6 to 9 show a third embodiment of the invention, which shows a special design of the second handle holder 22 and the second adapter element 25 taken individually and in the door handle arrangement.

[0080] Components that have already been described in the second embodiment will not be discussed in more detail, but the different parts will be described in more detail below.

[0081] The second adapter element 25 comprises a seat body 252 with a second through-bore 2520 and a seat cover 253. The seat body 252 has an annular groove open on one side, which is formed around the second through-bore 2520. An elastic element 2521, preferably an annular spring element or spiral spring element, is received in the annular groove and closed by the seat cover 253. The annular groove has a lateral opening that extends between the seat body 252 and the seat cover 253 along the circumference of the annular groove. The elastic element 2521 also has two free ends, one free end being connected to the seat body 252 and the other free end being connected to the second handle holder 22 via the lateral opening. In particular, the retaining ring 251 is located on the side of the seat body 252 that faces the first handle holder 12.

[0082] The seat cover 253 has a further through-hole 2530, which corresponds in cross-sectional shape to the second through-hole 2520 and is designed to receive or pass through the connecting shaft 3. The elasticity of the elastic element 2521 is adjustable, thus adjusting the force a user must exert to operate the door handle 1, 2. This makes it easier for a user to open the door with the door handle assembly.

[0083] Furthermore, an adjustment section 2522 is formed on the circumferential side of the seat body 252, which interacts with a groove-shaped adjustment recess 2201, which is connected to the second through-opening 220 and forms a receiving space for receiving the seat body 252. The seat body 252 is rotatably received therein about the longitudinal axis LA, wherein the rotation range is limited by the adjustment section 2522, which is received in the groove-shaped adjustment recess 2201, which forms lateral stops for the adjustment section 2522. In particular, the circumferential length of the groove-shaped adjustment recess 2201 is selected to be greater than the circumferential length of the adjustment section 2522 in order to create an adjustment range, i.e., the adjustment section 2522 is rotatably received in the groove-shaped adjustment recess 2201.

[0084] Furthermore, the second handle holder 22 has an adjustment opening that extends from the circumferential side into the groove-shaped adjustment recess 2201 and is designed to receive an elongated adjustment element 224. By means of an adjustment element 224, the circumferential position of the adjustment section 2522 in the groove-shaped adjustment recess 2201 can be adjusted, and thus also the rotational angle position of the second adapter element 25 or the door handles 1, 2 connected to it via the connecting shaft 3.

[0085] The angle of rotation of the connecting shaft 3 is then adjusted, for example, to readjust the movable distance of the lock body of the door lock so that the distance of the door lock can be adjusted to different doors.

[0086] For example, the other end of the second handle holder 22 is provided with a compression opening that extends through the second handle holder 22 to the free end of the elastic element 2521 received therein. A locking spring element 223 is received in the compression opening and is connected to the elastic element 2521. Via this, a compression force can be exerted on the free end of the elastic element 2521. The other end of the elastic element 2521, in contrast, is firmly coupled to the second handle holder 22. The second handle holder 22 is provided on the side facing the second outer end with a cover ring 221, which outwardly covers the previously described adjustment device. Preferably, the adjustment section 2522 is completely received in the groove-shaped adjustment recess 2201. The invention has been described above using exemplary embodiments.It is understood that numerous changes and modifications are possible without departing from the inventive concept underlying the invention.

[0087] List of reference symbols

[0088] 1 lockable door handle

[0089] 11 first housing

[0090] 110 first borehole

[0091] 111 first assembly section

[0092] 1111 mounting holes

[0093] 112 snap ring

[0094] 1121 locking recess

[0095] 12 first handle holder

[0096] 120 first feedthrough opening

[0097] 121 Receiving opening

[0098] 122 first connecting pipe

[0099] 13 Sliding element

[0100] 131 Rest section

[0101] 132 first mounting groove

[0102] 133 connecting section

[0103] 1331 connecting hole

[0104] 134 Fastening element

[0105] 135 through hole

[0106] 14 Locking element

[0107] 140 coupling bore

[0108] 141 Locking section

[0109] 142 Unlocking section

[0110] 143 cladding panel

[0111] 144 Coupling element

[0112] 145 locking element

[0113] 1451 spring

[0114] 15 first adapter element

[0115] 150 first through hole

[0116] 151 Retaining ring

[0117] 16 Mounting seat

[0118] 160 mounting recess

[0119] 161 Fastening sections 1610 Connecting hole

[0120] 1611 locking hole

[0121] 162 assembly materials

[0122] 163 Locking pin

[0123] 2 non-locking door handles

[0124] 21 second housing

[0125] 210 second outer bore

[0126] 211 second assembly phase

[0127] 22 second handle holder

[0128] 220 second feedthrough opening

[0129] 2201 adjustment recess

[0130] 221 cover ring

[0131] 222 second connecting pipe

[0132] 223 Locking spring element

[0133] 224 Adjustment element

[0134] 23 Shaft holding element

[0135] 230 shaft mount

[0136] 231 second mounting groove

[0137] 2310 locking hole

[0138] 232 Locking shaft element

[0139] 24 cladding panel

[0140] 241 Release hole

[0141] 25 second adapter element

[0142] 251 Retaining ring

[0143] 252 seat bodies

[0144] 2520 second through hole

[0145] 2521 elastic element

[0146] 2522 setting section

[0147] 253 locking spring element

[0148] 2530 through hole

[0149] 26 Mounting seat

[0150] 3 connecting shaft

[0151] 31 Release shaft

[0152] LA longitudinal axis

Claims

Patent claims 1. A lockable door handle (1) comprising a first housing (11) having a first inner end and a first outer end arranged opposite one another, a first handle holder (12) arranged circumferentially rotatably at the first inner end and designed to be connected to a door leaf, and a locking assembly comprising a pivotable locking element (14), a sliding element (13) movable between a locking position and an unlocking position, wherein pivoting of the locking element (14) moves the sliding element (13) into the locking position to prevent rotation of the first housing (11), and pivoting back of the locking element (14) moves the sliding element (13) into the unlocking position to release rotation of the first housing (11).

2. Lockable door handle (1) according to claim 1, characterized in that the sliding element (13) has a locking section towards the first inner end (131) and the first handle holder (12) has a receiving opening (121) corresponding to the locking section (131), wherein in order to realize a locking of the first housing (1), the locking section (131) engages in the corresponding receiving opening (121) when the sliding element (13) is moved into the locking position.

3. Lockable door handle (1) according to claim 1 or 2, characterized in that the sliding element (13) has at least one first mounting groove (132) formed on the outer peripheral side, that the first housing (11) has at least one first mounting section (111) which is formed on the inside of the first housing (11) for receiving in the first mounting groove (132), wherein the sliding element (13) is slidably mounted on the inside of the first housing (11) by means of the first mounting groove (132) in connection with the first mounting portion (111).

4. Lockable door handle (1) according to claim 1 or 2, characterized in that the locking element (14) is pivotally mounted about its center line on the first outer end of the first housing (11) and has a locking portion (141) and an unlocking portion (142) which are arranged opposite one another to the center line, wherein the locking portion (141) is connected to the sliding element (13) in such a way that by pressing the locking portion (141) the locking element (14) is pivoted and thereby the sliding element (13) is moved into the locking position and that by pressing the unlocking portion (142) the sliding element (13) is moved back into the unlocking position.

5. Lockable door handle (1) according to claim 4, characterized in that the locking element (14) has a rotary channel running along its center line, that the ends of the rotary channel are provided with locking elements (145), two of the locking elements (145) being connected to one another in the rotary channel via a spring (1451), and that a locking recess (1121) corresponding to a locking element (145) is formed at the first outer end, the locking element (145) being rotatably received in the locking recess (1121), so that the locking element (14) is attached to the first outer end of the first housing (11) so as to be pivotable along its center line.

6. Lockable door handle (2) according to claim 1 or 2, characterized in that the first handle holder (12) has a first through-opening (120), that the first housing (11) has a first adapter element (15) adapted to the first through-opening (120), that one end of the first adapter element (15) is connected in a rotationally fixed manner to the first housing (11), wherein the other end of the first adapter element (15) is rotatably received in the circumferential direction in the first through-opening (120), and that the first adapter element (15) has a first through-bore (150) which extends in the axial direction to the first recess (120), wherein the first through-bore (150) is designed for the rotationally fixed reception of a Connecting shaft (3) is designed to establish a rotationally fixed connection between the connecting shaft (3) and the first housing (11).

7. Lockable door handle (2) according to claim 6, characterized in that the first handle holder (12) is provided on one side towards the first outer end with a fastening seat (16), wherein the fastening seat (16) is designed to receive the first adapter element (15) and has a fastening recess (160), wherein the fastening seat (16) is fitted in the first housing (11) in a rotationally fixed manner and wherein one end of the first adapter element (15) is firmly received in the fastening recess (160) in order to firmly connect the end of the first adapter element (15) to the first housing (11).

8. Lockable door handle (1) according to claim 7, characterized in that the fastening seat (16) has a locking bore (1611) extending from the peripheral side to the fastening recess (160), that the first housing (11) is provided with a first bore (110) which corresponds to the locking bore (1611), that a locking pin (163) can be inserted through the locking bore (1611) and the first bore (110) into an end of the first adapter element (15) so that the end of the first adapter element (15) is secured in the fastening recess (160).

9. Door handle assembly comprising a lockable door handle (1) according to one of claims 1 to 8, characterized in that the door handle assembly has a non-lockable door handle (2) which comprises a second housing (21) and a second handle holder (22), wherein the second housing (21) has a second inner end and a second outer end which are opposite to one another, and wherein the second handle holder (22) is arranged rotatably in the circumferential direction at the second inner end of the second housing (21) and is designed for connection to a door leaf, wherein the first housing (11) and the second housing (21) are connected to one another in a rotationally fixed manner via the opposite ends of a connecting shaft (3). lO.Door handle arrangement according to claim 9, characterized in that the connecting shaft (3) is hollow and has an unlocking shaft (31) which is received axially displaceably in the connecting shaft (3), that the second outer end of the second housing (21) has an unlocking bore (241) which corresponds to the unlocking shaft (31), and that the sliding element (13) has a through-bore (135) through which the unlocking shaft (31) is guided and connected to the locking element (14).

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