Door handle, door attachment and door provided with an operating element for disinfecting the handle surface of the door handle

Abstract

To provide a door handle that sterilizes the handle surface of the door handle and, in some cases, the hands of a user when a door attachment is operated. [Solution] The door handle of the present invention includes an actuating element 12 that disinfects a handle surface 14 of the door handle 10. When the actuating element 12 is in a first, unactuated position, it forms a hollow portion 16 inside the door handle 10. A flow path 24 is connected to the door handle 10 to guide liquid into the hollow portion 16. The hollow portion 16 is sealed by at least one sealant 18 between a first sealing surface 20 of the actuating element 12 and a second sealing surface 22 of the door handle 10, and at least one of the sealing surfaces 20, 22 is formed with a notch 32 that, when the actuating element 12 is in a second position, disengages the sealant 18 from the at least one sealing surface 20, 22, reducing the volume of the hollow portion 16 and allowing the liquid to move from the hollow portion 16 toward the handle surface 14.

Description

[Technical Field]

[0001] The invention relates to a door handle as defined in the preamble of claim 1, a door fitting comprising a door handle according to claim 11, a pull handle according to claim 15, and a door comprising a door fitting according to claim 13 and / or a door comprising a pull handle according to claim 17. [Background technology]

[0002] A typical door fitting consists of a door handle, a bolt and a mounting element that fastens the bolt to the door leaf, which may include a torsion spring as a return element for the door handle, in order to return the door handle to its home position, typically a horizontal home position, after the door fitting has been manually actuated, rotated or pushed in to open the door lock.

[0003] Alternatively or in addition to such attachments, the door handle can be designed as a pull handle and fixedly attached to the door leaf, in particular so that it cannot be rotated. This door generally has a return element in the door hinge that can be operated using the pull handle when the door lock is open and that allows the door to be closed independently after activation. This allows the door to be opened, in particular, preferably by simply pulling the pull handle. Such a pull handle is often attached to the door leaf as a curved handle.

[0004] In particular, in public facilities such as schools and hospitals, and / or businesses, where interior and / or exterior doors are operated by hand by many different users, potentially transmitting dangerous pathogens and bacteria through contact with door handles. In such facilities, regular disinfection of door handles and disinfection of users' palms are essential.

[0005] U.S. Patent Application Publication No. 2014 / 338153 (Patent Document 1) discloses a device for disinfecting a hand-operated door handle, including a container for a liquid disinfectant. The door handle is configured with a shell or casing-like component that stores the disinfectant and slides onto the exterior surface of the handle. The disinfectant storage component is made of a sponge-like material that temporarily stores the disinfectant and releases it when pressure is applied from the outside. When a user applies pressure to the disinfectant storage component, the disinfectant is expelled from holes in the component, wetting the exterior surface and disinfecting the handle surface and the user's hands that touch the handle.

[0006] German Patent Application Publication No. 102012017365 (Patent Document 2) also discloses a device that disinfects a door handle when a door attachment is activated. The door handle of this door attachment has a hollow portion filled with a disinfectant. The hollow portion is connected to an outer shell made of a foam or sponge-like material by holes. When pressure is applied to the foam material by the fingers, the foam material is compressed, and the disinfectant is forced outward from the foam material and comes into contact with the entire hand.

[0007] GB 2436284 A1 (Patent Document 3) shows a door handle that is fixed to a door leaf as a pull handle rather than as a door attachment. The door handle includes a foam-like element that is packed into a hollow portion within the door handle and partially forms the surface of the door handle. A disinfectant container is integrated into the pull handle above the hollow portion, and the pull handle is attached to the door leaf such that disinfectant flows independently from the container to the foam-like element. When the door handle is actuated or squeezed, the foam is compressed and disinfectant is dispensed into the user's hand.

[0008] The surfaces of sponge-like and foam materials typically have an uneven surface with multiple open pores. However, such surfaces or materials are not well suited for hygienic applications because dirt and bacteria easily adhere to the pores. In particular, cleaning the surface, including the pores, is tedious, and the entire foam material may need to be periodically removed and replaced. Furthermore, it is difficult to adjust the amount of disinfectant dispensed, which can lead to uneven pressure distribution on the handle surface, resulting in uneven or locally excessive amounts of disinfectant dispensed. This can easily lead to droplets forming, which can unintentionally accumulate on the floor below the door handle. Furthermore, the disinfectant container must be refilled at short, irregular intervals.

[0009] EP 3118395 B1 (Patent Document 4) describes a cover or a type of tube with an open gap that can be attached to a given door handle and is connected to a container for disinfectant. Specifically, when a user applies pressure to the cover while using the door handle to operate the door attachment, the open gap, which acts like a valve, opens and the disinfectant flows from the container to the handle part of the door handle under the influence of gravity.

[0010] German Utility Model No. 202004006845 (Patent Document 5) also discloses a door handle with a hollow portion for guiding a disinfectant. The door handle is made of plastic and has a flap as an operating element that can be compressed when a user applies pressure so that the disinfectant inside the door handle flows onto the handle surface under the influence of gravity.

[0011] The above-mentioned valve-like actuation element allows the disinfectant to flow to the handle surface of the door handle, but the disinfectant continues to flow continuously while the door handle is being operated. In other words, the amount of disinfectant dispensed depends on the activation time. This can lead to uneven disinfectant consumption and, in some cases, excessive disinfectant consumption without providing any additional benefit in terms of disinfection effect, resulting in unintended droplet formation and increased consumption. Even in this case, porous handle surfaces, i.e., handle surfaces with various recesses, are susceptible to dirt and are difficult to clean. In particular, if a sponge-like material is additionally provided within the door handle, it can be difficult to remove dirt and the material must be replaced periodically. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] US Patent Application Publication No. 2014 / 338153 [Patent Document 2] German Patent Application Publication No. 102012017365 [Patent Document 3] GB Patent Application Publication No. 2436284 [Patent Document 4] European Patent No. 3118395 [Patent Document 5] German Utility Model No. 202004006845 Summary of the Invention [Problem to be solved by the invention]

[0013] The object of the present invention is to propose a door handle which, upon activation of the door fitting, disinfects the handle surface of the door handle and possibly also the user's hands, while avoiding the problems known from the prior art. [Means for solving the problem]

[0014] The above object is achieved by a door handle having the features of independent claim 1, a door attachment according to claim 11, and a door according to claim 13.

[0015] Advantageous embodiments are the subject matter of the dependent claims.

[0016] The present invention proposes a door handle, in particular a door handle for an interior and / or exterior door of a public building and / or business, comprising an actuating element for disinfecting the handle surface of the door handle, the actuating element being at least partially arranged within the door handle so as to form a hollow space inside the door handle in a first, inactivated position, a flow path leading to the door handle, the flow path opening into the hollow space at one end and having a connector at the other end that is connected to a container so as to direct a liquid, in particular a disinfectant, from the container through the flow path and the connector into the hollow space, and the actuating element can be manually displaced against at least one return element. To this end, the hollow portion is sealed by at least one seal between a first sealing surface of the actuating element and a second sealing surface of the door handle, at least one of the sealing surfaces being formed with a cutout portion which disengages the seal from at least one sealing surface in a second position of the actuating element to reduce the volume of the hollow portion compared to the first position and allow the liquid to move from the hollow portion towards the handle surface, a blocking portion of the first sealing surface being arranged and oriented such that when the actuating element is displaced from the first position to the second position, at the transition between the hollow portion and the flow path, said blocking portion of the actuating element at least partially closes or blocks the flow path, and in a third position of the actuating element, the seal is pressed against both of the sealing surfaces and the volume of the hollow portion is further reduced compared to the second position and the flow path and / or the hollow portion is completely closed.

[0017] During the above process, the inventors surprisingly discovered that the door handle design of the present invention allows a predetermined amount of disinfectant to flow to the handle surface after the actuation element is operated. In this situation, the actuation element functions as both a valve that opens and closes the flow path to provide access to the disinfectant, and also as a type of positive displacement pump that transports the liquid from the hollow portion to the handle surface. As a result, the actuation element does not require gravity to transport the liquid in the hollow portion to the handle surface. Preferably, gravity is only required to refill the hollow portion after the actuation process, specifically when the actuation element is in the first position or is returned to the first position after actuation or displacement. This allows the design to deliver a predetermined amount of liquid from the hollow portion to or onto the handle surface, preventing, for example, excess liquid from dripping onto the floor. Therefore, a door handle equipped with the actuation element has a certain leak-proof property when the door handle or the actuation element is continuously operated. Furthermore, this predetermined discharge of liquid allows for less frequent refilling of the container or the use of a smaller container. This allows for an overall more efficient use of the liquid.

[0018] Furthermore, the door handle, which preferably consists of two parts including the actuating element, can be easily installed and manufactured, for example, without the need for a separate valve element consisting of a cable pull, a sponge-like foam material or other complex installation mechanism, which would not only be complex to manufacture but would also be particularly difficult to clean and prone to harbor bacteria. Furthermore, the absence of multiple holes or recesses on the handle surface not only creates an environment that is not suitable for the growth of microorganisms, but also has the added advantage of being extremely easy to clean.

[0019] In a preferred embodiment, the actuating element is partially disposed within the door handle so that the volume of the hollow portion can be reduced by moving the actuating element in the direction of gravity when the door handle is attached to the door leaf. In this case, the door handle is preferably horizontal and perpendicular to the direction of gravity. This allows the liquid in the hollow portion to move uniformly through the actuating element and be evenly distributed on the handle surface when the actuating element is displaced when the door handle is operated and pushed to the second position. Preferably, the liquid moves uniformly along the entire circumference of the actuating element between the sealing surface of the actuating element and the sealing surface of the door handle.

[0020] Alternatively, the door handle may be provided on the door leaf in a different orientation, so that a user can grasp the door handle with their hands on both the actuating element and the opposite side of the door handle and displace the actuating element by forming a fist on the handle.

[0021] In another preferred embodiment, the container is fluid-tightly connected to the outlet side or outlet portion of the door handle in the direction of gravity, preferably by screwing or, for safety reasons, by gluing or welding, preferably by laser welding, to the door handle. This preferred arrangement of the container in the direction of gravity ensures that liquid flows into the flow path and into the hollow portion by gravity. Preferably, the container is located on the door handle itself, in a portion of the door handle facing the bolt. As mentioned above, the door handle and the actuating element are designed so that, when the actuating element is actuated, only a volume of liquid approximately corresponding to the volume of the hollow portion flows to the handle surface, preventing liquid from continuing to flow from the container. This results in extremely economical use of the disinfectant and allows the use of relatively small containers, preferably less than 100 mL to 150 mL. This type of container is suitable for 100 to 150 actuation cycles and does not require frequent refilling.

[0022] More preferably, the sealing material is an elastic O-ring fitted into a groove in one of the sealing surfaces of the door handle or the actuating element, and the notch and the groove are formed in the sealing surfaces of the actuating element and the door handle, respectively. Specifically, the notch faces the groove when the actuating element is in the second position. This means that the distance between the sealing surfaces is greater than when the actuating element is in the first position, and the O-ring disengages from at least one of the sealing surfaces, allowing the disinfectant liquid to move from the hollow portion to the handle surface.

[0023] It is particularly preferable that the O-ring is a solvent-resistant O-ring made of, for example, nitrile rubber, fluororubber, carbon rubber, or the like.

[0024] Preferably, in the first position of the actuating element, the force of the seal and the sealing surface is greater than the force of the return element so that the actuating element is clamped and fixed within the door handle. At least, the force of the return element and the force of the seal against the sealing surface are coordinated. During installation and removal, the actuating element can be inserted into or removed from the hollow portion of the door handle simply by overcoming the force of the seal. To install the actuating element, the actuating element is inserted into the door handle, preferably by hand, and pushed into the first position. To remove the actuating element, the seal can be released from the sealing surface by generating excess pressure through the flow passage, for example, with pressurized air. Instead of pressurized air, a tool can also be used to clamp or remove the actuating element from the door handle. Preferably, the force of the return element is selected to be large enough to maintain or maintain the self-adhesion described above over multiple operating cycles, even if the seal wears slightly.

[0025] In other words, the actuating element can be preferably secured within the door handle by means of a seal (particularly an O-ring) alone, and it is preferably intended that no additional fasteners are required to secure the actuating element.

[0026] Alternatively, the actuating element may be held in the first position against the force of the return element by a retaining pin or other geometric stop, but this increases the number of parts in the door handle, unnecessarily complicates assembly and removal during manufacturing, and can cause buildup to collect on the actuating pin or geometric stop, making the door handle less easy to clean and hygienic.

[0027] Preferably, a plurality of springs, particularly preferably two springs, even more preferably three springs, in particular helical coil springs, are provided as return elements or return means, which are guided in recesses, in particular blind holes, respectively, in the actuating element. Preferably, the springs are pressure springs.

[0028] Preferably, the door handle is configured as a round cylindrical part, preferably a round cylindrical part with a diameter of 18 mm to 22 mm, and preferably the hollow part is formed in the door handle as an elongated hole with a length of 65 mm to 75 mm and a width of 10 mm to 14 mm. Preferably, when the operating element is installed, the width of the gap between the sealing surface of the operating element and the sealing surface of the door handle outside the notch is 0.1 mm to 0.5 mm. In this case, preferably the operating element is formed according to the shape of the elongated hole, and the dimensions of the operating element are selected so that the gap is set between the sealing surfaces.

[0029] Preferably, in the first position of the actuating element, the volume of the hollow portion is 2.2 cm 3 ~3cm 3 This type of hollow portion provides just enough sanitizer to wet the handle surface and preferably also the user's palm, while the volume is small enough to prevent droplets from forming on the handle surface.

[0030] More preferably, the door handle and the actuating element are made of metal, preferably aluminum or stainless steel, or alternatively a copper alloy. Preferably, the metal has antibacterial or antimicrobial properties to create an environment that is difficult for bacteria and pathogens to grow in. Preferably, the metal door handle is highly resistant to several antibacterial cleaning agents.

[0031] Alternatively, the door handle and / or the actuating element may consist of plastic, preferably a plastic with an antibacterial or antimicrobial surface or surface coating, preferably made by injection molding, which allows the door handle to be mass-produced but may have lower chemical resistance and require additional surface treatment to create conditions that are less conducive to bacterial growth.

[0032] In a preferred embodiment, the handle surface is roughened by blasting, preferably by sand jet or shot blasting, and has a surface roughness of 20 μm to 40 μm, as measured in accordance with ISO 8503, to increase the contact angle between the handle surface and the disinfectant. According to ISO 8503, surface roughness is the average maximum height between the peaks and valleys of the surface. This allows the handle surface to be wetted well by the disinfectant and prevents droplet formation. This allows the liquid to remain on the handle surface longer, which is advantageous for disinfecting the handle surface.

[0033] Preferably, the invention comprises a door fitting comprising a bolt and a door handle including an actuation element, said door handle being mounted perpendicular to said bolt and screwed against rotation about its central longitudinal axis.

[0034] Preferably, the pressure for actuating the door fitting, in particular the force for deforming a torsion spring in the bolt mounting element, is equal to or greater than the force for forcing the actuating element into said third position against the force of the return element, so that upon actuation of the door fitting, the actuating element in said third position ensures that the cavity and / or the flow path are closed, thereby blocking unintended further delivery of liquid from the container.

[0035] Particularly preferably, the door fitting is designed in two parts: a door handle and a bolt, and the door handle, preferably together with the container, can be removably attached to the bolt, which advantageously allows the door handle, preferably together with the container, to be easily and quickly attached and / or removed and / or retrofitted and / or replaced and / or cleaned or disinfected, while preferably the bolt can remain attached to the door.

[0036] The present invention also includes a door having the door attachment described above, wherein the door handle is attached to one or both sides, specifically, the connecting portion of the door handle including the bolt is detachable so that it can be attached to either side of the door, unlike designs in which the door handle including the bolt is integral.

[0037] It is also conceivable that the container is fixed to the door leaf of the door and is connected to the flow channel of the door handle via a connector (particularly a tube).

[0038] In addition to or instead of the door fitting, the door handle including the actuating element can also be designed as a pull handle, in particular a bowed handle, for actuating the door.

[0039] For this purpose, the pull handle comprises a housing forming a handlebar, preferably a cylindrical or tubular handlebar, having a common extension axis with the door handle, and the housing forms the container for containing the liquid as a tubular first housing connected to the connector of the door handle. Advantageously, the container being integrated into the handlebar reduces the number of parts in the pull handle and simplifies the installation or retrofitting of existing pull handles. Advantageously, a separate container with a tubular connection is not required in the door leaf. Advantageously, the user can operate the pull handle from the housing. The container thus formed thus also forms the part of the pull handle that can be grasped by the user.

[0040] Preferably, the door handle, in particular the door handle as a round cylindrical part, is insertably connected at one end to the first tubular receiving part and at the other end to the second tubular receiving part, and the connector of the door handle includes a circumferential seal for sealing the first tubular receiving part as a container. Preferably, the container with the flow path for guiding the liquid from the container to the hollow part of the door handle is formed as a cylindrical connecting part of the door handle with a reduced cross section, preferably along the extension axis of the handlebar, and the seal is arranged along the circumference of the cylindrical connecting part.

[0041] Preferably, the cylindrical door handle includes a cylindrical housing, so that the diameter of the handlebar is uniform. Advantageously, this eliminates any cross-sectional protrusions between the door handle and the housing, making the handlebar extremely easy to clean and eliminating the possibility of dirt accumulating on cross-sectional protrusions. The door handle connector is located inside the housing in the installed state.

[0042] Preferably, the sealing material is an O-ring arranged in a guide groove on the outer periphery of the connector of the door handle (particularly on the outer periphery of the cylindrical connection part), and the O-ring is pressed against the inside of the tubular first receiving part so that, in the installed state, the container is sealed towards the door handle and the door handle is preferably connected to the tubular first receiving part in a press-fit manner. This allows the door handle to be installed simply, in particular without a threaded connection, and allows one end of the container to be sealed. The other end of the container is preferably closed by an insertable lid for refilling.

[0043] Alternatively, the lid may close and seal the container by means of a threaded connection, preferably with a sealing ring.

[0044] Preferably, the lid is provided with a closure mechanism, or can be activated, preferably with a special tool or with a special wrench, to ensure theft prevention or to prevent unwanted refilling of the container. The closure mechanism may be configured as a lock in the lid that can be activated with a key, whereby a fixing element that can be turned with the key is form-fittingly connected to the container (particularly a notch on the inside of the container) in the closed state or is press-fittedly connected to the container. If a special tool is used, preferably the lid has notches (particularly two holes), preferably on the outer surface of the lid, and the special tool is designed to form-fit into these notches and to manipulate, in particular turn, the lid (preferably the screwed-on lid).

[0045] Preferably, the lockable or anti-theft lid is designed for the container on the pull handle and for containers that are attached to a door attachment or to the door handle itself.

[0046] Preferably, the door handle can be additionally inserted into the second receiving portion by means of a further cylindrical connecting portion to ensure a positive connection of the door handle to the door leaf in the mounted state, and for this purpose the first and second receiving portions are designed so that the door handle is located in the center of the handlebar.

[0047] The present invention further includes a door having at least one pull handle as described above, wherein the cylindrical handle bar of the pull handle is attached to one or both sides of the door at the housing using at least one attachment element.

[0048] Preferably, the housing is designed as a first and a second housing, each of which is provided with a mounting element, such that the pull handle as a handlebar with mounting elements forms a kind of arcuate handle, with the door handle including the actuating element preferably being located in the center of the arcuate handle.

[0049] In this way, a handlebar can be formed by the housing that allows the door handle to be attached to the door leaf, and at the same time the container can be integrated into the handlebar, thereby achieving space savings.

[0050] Preferably, the actuating element of the door handle is arranged on the opposite side of the handlebar from the mounting element so that when a user operates or opens the door, pressure from a pulling actuation or pressure, in particular from applying pressure with the palm of the hand on the handlebar, causes the actuating element to act against the return element.

[0051] Preferably, the pressure for actuating the pull handle, in particular the force for opening the door against a return element in a door hinge, is equal to or greater than the force for displacing the operating element to the third position against the force of the return element, so that upon actuation of the pull handle, the operating element in the third position ensures that the hollow portion and / or the flow path are closed, thereby preventing unintended continuous dispensing of liquid from the container.

[0052] Alternatively, the actuating element may be arranged rotated 180° about the extension axis of the handlebar with respect to the preferred orientation for pressure action, in which case the user preferably opens the door by grasping the actuating element with their fingers and simultaneously displacing the actuating element with a pulling movement of the handlebar.

[0053] In a further variant, the actuating element can be arranged in an orientation rotated about the extension axis of the handlebar between the orientations described above as preferred orientations for pulling or pressure actuation, with a lateral orientation being preferred, particularly a lateral orientation rotated by 90° relative to the pressure actuation orientation. The lateral actuating element can preferably be actuated by lateral pressure on the actuating element or by the user's hand forming a fist while gripping the handlebar.

[0054] Preferably, the extension axis of the pull handle and the longitudinal central axis of the door handle are oriented so that liquid flows by gravity through the tubular first accommodating portion, in particular through the flow path of the connector to the door handle, and preferably the extension axis of the pull handle is oriented parallel to the direction of gravity.

[0055] Details and embodiments of the invention are explained below with the aid of drawings which are merely schematic. [Brief explanation of the drawings]

[0056] [Figure 1] 1 is a perspective view of a door fitting with a door handle including an actuating element and a receptacle, and a bolt, mounted on a door leaf; FIG. [Figure 2a] 2 is a detailed longitudinal cross-sectional view of the actuating element, taken along the xz plane of FIG. 1, of the door handle. [Figure 2b] 2b shows a longitudinal section of the actuating element in the xz plane of FIG. 2a and a side view of the same actuating element; [Figure 2c] 2b is a longitudinal cross-sectional detail of the door handle in the xz plane of FIG. 2a; FIG. [Figure 2d] 2b shows a longitudinal section of the actuating element in the xz plane of FIG. 2a and a detail of a longitudinal section of the door handle; [Figure 3a] 2b is a detailed view of the actuating element and the door handle of FIG. 2a in a first position of the actuating element; FIG. [Figure 3b] 2b is a detailed view of the actuating element and the door handle of FIG. 2a in a second position of the actuating element; FIG. [Figure 3c] 2b is a detailed view of the actuating element and the door handle of FIG. 2a in a third position of the actuating element; FIG. [Figure 4a] FIG. 1 is a plan view in the xy plane showing a pull handle with a door handle. [Figure 4b] 4b is a cross-sectional view of the pull handle of FIG. 4a in the xz plane along the cutting axis BB. [Figure 4c] FIG. 4c is a perspective view of the pull handle of FIGS. 4a and 4b. DETAILED DESCRIPTION OF THE INVENTION

[0057] FIG. 1 shows a door fitting 100. A door handle 10 including an actuating element 12 and a receptacle 28 are attached to a bolt 40, which is attached to a door leaf 46. The actuating element 12 is depicted in a first, unactuated position. Preferably, a portion of the actuating element 12 protrudes from the door handle 10 like a button. The surfaces of the actuating element 12 and the door handle 10 together form a handle surface 14. Preferably, the door fitting 100 and the actuating element 12 can be manually operated via the handle surface 14.

[0058] Preferably, the door handle 10, when attached to the door leaf 46, is horizontally oriented in the unactuated position. Preferably, the actuating element 12 is at least partially positioned within the door handle 10 to allow for movement of the actuating element 12 and corresponding application of pressure F, in the direction of gravity g, by a user on the handle surface 14 of the actuating element 12. This allows for operation of the actuating element 12, preferably at the same time that the door fitment 100 is depressed.

[0059] Preferably, the container 28 is connected to the door handle 10 via a discharge side or portion 48 including the connector 26, preferably by a threaded connection sealed with a sealing ring. Preferably, the container 28 is located above the door handle 10 in the direction of gravity g, so that the liquid in the container 28 flows towards the door handle 10, preferably without the need for a complex delivery mechanism.

[0060] The container 28 is closed by a lid 60. Preferably, the lid 60 is provided on the side opposite the discharge port 48 and is screwed onto the input port. Preferably, the lid 60 seals the container 28 to prevent evaporation of the disinfectant. More preferably, the lid can be locked for security reasons.

[0061] 2a, in the first, non-activated position of the actuating element 12, the actuating element 12 defines a hollow space 16 inside the door handle 10. A flow path 24 communicates with the door handle 10. The flow path 24 opens at one end into the hollow space 16 and is connected at the other end by a connector 26 (see FIG. 1) to a container 28, so as to guide a liquid (in particular a disinfectant) from the container 28 through the flow path 24 and the connector 26 into the hollow space 16.

[0062] Preferably, the flow path 24 communicates with the door handle 10 along its longitudinal axis 50, for example by providing a hole in the door handle 10 on the side facing the bolt 40 and sealing the formed opening with glue or screws, or by attaching a connector, such as a tube, to the container 28. Also preferably, the actuating element 12 has a notch 54. Preferably, the notch 54 faces the opening of the flow path 24 in said first position of the actuating element 12, so that the liquid can flow unhindered into the hollow portion 16 in said first position of the actuating element 12.

[0063] In the installed state, the actuating element 12 has a gap 52 in its side wall, and is at a distance t to the door handle 10. A seal 18 is provided in the gap 52 to seal the hollow portion 16. Specifically, the seal 18 is provided between a first sealing surface 20 of the actuating element 12 in Figure 2b and a second sealing surface 22 of the door handle 12 in Figure 2c.

[0064] According to Fig. 2c, the second sealing surface 22 of the door handle 10 is further formed with a cutout 32. Alternatively or additionally, the first sealing surface 20 of the actuating element 12 may be formed with a cutout 32. Preferably, the cutout 22 may be formed in the shape of a semicircle using a router bit.

[0065] The actuating element 12 can be manually operated by pressure F against a return element 30 (preferably two return elements 30) and can be displaced from the first position to the second and third positions according to Figures 3a to 3c.

[0066] In an alternative embodiment, as shown in Fig. 2d, the handle surface 14 of the actuation element 12 may be concave towards the hollow portion 16. Here, the concavity is formed in one direction, preferably in multiple directions, so as to facilitate the collection of liquid on the handle surface 14 of the actuation element 12. Advantageously, the concavity towards the hollow portion 16 prevents leakage from the handle surface 14. Preferably, the amount of liquid collected corresponds to the amount of liquid that would be received by a user's hand. Advantageously, the collection of liquid prevents the disinfectant from evaporating directly before it is received by the user's hand.

[0067] 3a and 3b illustrate the door handle 10 including the actuating element 12 as the actuating element 12 transitions from the first position to the second position. In the second position of FIG. 3b, the volume of the hollow portion 16 is reduced compared to the first position of FIG. 3a. In the second position, the sealant 18 is present in the cutout 32. The cutout 32 increases the gap distance t between the first sealing surface 20 and the second sealing surface 22, causing the sealant 18 to at least partially disengage from one of the sealing surfaces 20, 22. This partially opens the hollow portion 16, allowing the liquid displaced by the actuating element 12 within the hollow portion 16 to flow through the gap 52 between the actuating element 12 and the door handle 10 to the handle surface 14.

[0068] Due to the preferred horizontal mounting of the door handle 10 relative to the bolt 40 and the preferred positioning of the actuating element 12 in the direction of gravity g, which reduces the volume of the hollow portion 16, the liquid is distributed very evenly on the handle face 14 and flows very uniformly around the circumference of the actuating element 12 between the sealing faces 20, 22.

[0069] In the second position of the actuating element 12, the flow path 24 is at least partially covered by the blocking portion 44 of the actuating element 12, preferably at the same time as covering the opening of the hollow portion 16. This at least partially closes or blocks one end of the flow path 24, increasing the flow resistance to such an extent that gravity-driven liquid delivery from the container 28 to the handle face 14 is at least partially prevented.

[0070] 3c illustrates a third position of the actuating element 12. In this position, the volume of the hollow portion 16 is further reduced compared to the second position, and the gap distance t is also reduced at the seal 18, which presses against both the first-position sealing surfaces 20, 22, thereby closing the flow path 24 and the entire hollow portion 16. In this third position, the door handle 10 can be held without gravity causing additional liquid to flow onto the handle face 14.

[0071] In the third position, the actuating element 12 preferably contacts the bottom 43 of the hollow portion 16 or is slightly above said bottom 43, so that the liquid moves as far as possible from the hollow portion 16 through the actuating element 12, preventing dirty liquid from accumulating in the hollow portion 16.

[0072] The seal 18 is preferably an elastic O-ring 19, which is fitted in a groove 34 in the sealing surface 20 of the actuating element 12, as shown in Figure 2a. Alternatively, the groove 34 may be provided in the sealing surface 22 of the door handle 10, and preferably a cut-out 32 may be provided in the sealing surface 20 of the actuating element 12. In Figures 3a and 3c, an O-ring 19 is shown in the first and third positions of the actuating element, preferably partially located in the cut-out 32 of the sealing surface 22 of the door handle.

[0073] The return element 30 is preferably designed so that in the first position of the actuating element 12 shown in Figure 2a or Figure 3a, the adhesion force between the seal 18 and the sealing surfaces 20, 22 is greater than the force of the return element 30, and the actuating element 12 is clamped and fixed within the door handle 10.

[0074] Preferably, the return element 30 is preloaded so that at least a portion of the seal 18 is pressed into the gap 52 between the sealing surfaces 20, 22. Specifically, the elastic seal 18 (preferably an O-ring 19) is pressed into the groove 34 of the sealing surfaces 20, 22 outside the notch 32 and into the gap 52. In this state, the adhesive force between the seal 18 and the sealing surfaces 20, 22 is very strong, preferably greater than the force of the return element 30. At this time, a portion of the seal 18 is allowed to expand within the notch 32, and the seal 18 is further pinched in the notch 32 due to the geometric change in the gap distance t. The pinching of the seal 18 simultaneously seals the hollow portion 16 and fixes the actuating element 12 in the door handle 10.

[0075] Preferably, the gap distance t and the size and position of the sealant 18 are realized so that the sealant 18 can be pushed through the gap 52 for installation. However, the sealant 18 is already in partial pressure contact with the cutout 32, thereby creating a sealing effect. When the actuating element 12 is to be removed, the sealant 18 will only need to overcome the adhesion force at the cutout 32, and preferably also the geometrically generated shear force. As described above, the actuating element 12 can be fixed in the door handle 10 very easily without the need for additional fasteners.

[0076] Preferably, two springs 36 (in particular helical coil springs) are used as return elements 30. These springs are guided in respective recesses 38 (in particular blind holes) in the actuating element 12. This ensures that the actuating element 12 moves very evenly and prevents it from getting stuck on one of the sealing surfaces 20, 22. For this reason, the recesses 38 are also preferably provided longitudinally on the outer part of the actuating element 12. In particular, the springs 36 are compression springs that are preloaded in the first position of the actuating element 12 and that can function as return elements when pressed against by the user with a force F.

[0077] Preferably, the force of the return element 30 is selected such that the movement of the actuating element 12 from the second position to the third position can be adjusted by the user with a slight manual force F, so that upon operation of the actuating element 12 (in particular upon normal operation of the door fitting 100), the helical coil spring is activated, displacing the actuating element 12 again to the third position and closing the cavity 16.

[0078] Preferably, the door handle 10 is made up of a round cylindrical part, the diameter of the door handle 10 is 18 mm to 22 mm, and the length of the handle surface 14 of the door handle 10 is preferably 80 mm to 120 mm. Here, the portion of the door handle 10 to which the container 28 is attached is not considered to be part of the handle surface 14.

[0079] Preferably, the hollow portion 16 is an elongated hole in the cylindrical door handle 10. Preferably, the elongated hole is located in the center of the handle face 14. Here, the length 1 of the elongated hole is preferably 65 mm to 75 mm, and the width b of the elongated hole is preferably 10 mm to 14 mm. The depth of the elongated hole in the door handle 10 is preferably 14 mm to 17 mm.

[0080] Preferably, the shape of the actuating element 12 corresponds to the hollow portion 16 embodied as an elongated hole, and the length and width of the actuating element 12 are obtained from the dimensions of the hollow portion 16 minus the clearance distance t. Preferably, the surface of the actuating element 12 forming the handle surface 14 has rounded or beveled edges, so that in the first position of the actuating element 12, the transition from the handle surface 14 of the door handle 10 to the handle surface 14 of the actuating element 12 extends preferably without interruption or with a slight edge height. Preferably, the height h of the actuating element 12 is 15 mm to 17 mm. Such a height prevents the actuating element 12 from getting caught on the inner surface of the hollow portion 16 during positional movement.

[0081] Preferably, the width of the gap t between the sealing surfaces 20, 22 and outside the notch 32 is 0.1 mm to 0.5 mm. Such a narrow width, in combination with the height h of the actuating element 12, allows the actuating element 12 to be well guided and prevents it from getting stuck. This allows the actuating element 12 to move as evenly as possible, and the liquid to be dispensed evenly around the circumference of the actuating element 12.

[0082] Furthermore, it is preferable that a groove 8 for accommodating the seal material 18 is formed in the circumferential direction of the operating element 12. It is preferable that the groove 8 is provided between 8 mm and 9 mm from the lower surface 42 of the operating element 12.

[0083] Preferably, the width of the groove 34 is larger than the diameter of the O-ring 19 so that the O-ring 19 can deform within the groove when sandwiched between the sealing surfaces 20 and 22. The cross-sectional diameter of the O-ring 19 and the depth of the groove 34 depend on the gap distance t between the sealing surfaces 20 and 22. The increase in the gap distance at the notch 32 depends on the cross-sectional diameter of the O-ring 19. Preferably, the depth of the groove 34 is selected so that 20% to 40% of the O-ring's diameter protrudes from the groove 34. To ensure sufficient sealing effect, it is desirable that the gap distance t outside the notch 32 be at least smaller than the protrusion of the O-ring's diameter. During installation, the operating element 12 together with the O-ring 19 is pushed into the hollow portion 16, causing the O-ring 19 to elastically deform. The operating element 12 is displaced until the O-ring 19 expands at the notch 32 and is sandwiched between the return element 30 in the first position. The preferred diameter of the O-ring is 1.5 mm to 2 mm.

[0084] When the actuating element 12 is installed in the hollow portion 16, the distance between the lower surface 42 of the actuating element 12 and the bottom 43 of the hollow portion 16 is 0 mm to 3 mm, depending on the position of the actuating element 12. As described above, the cutout 32 is positioned and sized so that the sealant 18 seals the hollow portion 16 in the first and third positions. Therefore, the size and position of the cutout 32 can be determined from the position of the sealant 18 and the desired distance between the lower surface 42 of the actuating element 12 and the bottom 43 of the hollow portion 16. Preferably, the cutout 32 is located 8 mm to 13 mm from the bottom 43 of the hollow portion 16.

[0085] At least part of the sealing surface 20 of the actuating element 12 is formed with a blocking portion 44 facing the opening of the flow passage 32 in the hollow portion 16. The size of the blocking element 44 is determined by a cutout 54 in the actuating element 12. The height of the cutout 54 in the actuating element 12 is selected so that the outlet of the flow passage 24 opens into the hollow portion 16 when the actuating element 12 is in the first position. Preferably, the height of the cutout 54 in the actuating element 12 is between 3 mm and 4 mm. For this purpose, it is further preferred that the cutout 54 forms a penetration into the recess 38 of the return means 30.

[0086] The volume of the hollow portion 16 in the installed state of the actuating element 12 is preferably 2.2 cm 3 in the first position of the actuating element 12. 3 ~3cm 3 Preferably, the amount of liquid that reaches the handle surface 14 via the actuation element 12 by the positional movement from the first position to the third position is between 1 mL and 3 mL.

[0087] Particularly preferably, the door handle 10 and the actuating element 12 are made of metal, preferably of aluminum or stainless steel.

[0088] Preferably, the handle surface 14 is a rough surface that has been blasted, preferably by sand jet or shot blasting, and the surface roughness measured in accordance with ISO 8503 is 20 μm to 40 μm so as to increase the contact angle between the handle surface 14 and the disinfectant.

[0089] As shown in Figure 1, the door handle 10 is preferably mounted perpendicular to the bolt 40 and threaded to prevent rotation about the central longitudinal axis 50 of the door handle 10. The door handle 10 has a tapered portion 56 at one end that passes through the bolt 40. The bolt 40 is preferably hollow so that a screw for fastening the door handle 10 can be threaded into the bolt 40, preferably against a flat surface on the tapered portion 56 of the bolt 40, in the direction of the bolt 40's longitudinal axis. With the bolt 40 attached to the door leaf 46, this screw cannot be accessed by a user unless the bolt 40 is removed, providing some theft protection.

[0090] Particularly preferably, the force F on the door handle 10 for actuating the door fitting 100 (in particular for deforming the torsion spring) is equal to or greater than the force for displacing the actuating element 12 into said third position against the force of the return element 30. This closes the hollow 16 and / or the flow passage 24 in said third position of the actuating element 12, so that the door handle including the actuating element becomes leaktight. The torsion spring may be provided in a mounting element 58 of the door fitting 100 and is tensioned by the relative rotational movement between the bolt 40 and said mounting element 58.

[0091] 1, the door attachment 100 is comprised of a detachable door handle 10 and a bolt 40, allowing the door handle 10 to be attached to one or both sides of a door. Unlike door attachments 100 in which the bolt 40 and door handle 10 are integral, the door handle 10 can be installed in any rotational orientation about its longitudinal axis 50, as long as the bolt 40 is provided with an appropriate attachment receptacle.

[0092] In another embodiment, the reservoir 28 is attached to the door leaf 46 and connected to the flow passage 24 of the door handle 10 via a tube.

[0093] 4a, 4b, and 4c, the door handle 10 is depicted as a pull handle 102 attached to a schematic door leaf 46. Unlike the door attachment 100 previously described, the pull handle 102 is fixedly connected to the door leaf 46, and the door handle 10 is connected to the door leaf 46 in a non-movable or non-rotatable manner. Preferably, the door can be opened by applying a pulling action to the pull handle 102.

[0094] Compared to the door handle 10 shown in Figure 1, the door handle 10 shown in this example forms together with the housing 70 a cylindrical or tubular handlebar 104 having an elongated axis E. The actuating element 12 is in the first, non-actuated position, similar to Figures 1 and 2a.

[0095] Preferably, the pull handle 102 has a housing 70 with first and second tubular receiving sections 72, 74, and the door handle 10 has male or reduced cross-section mating sections 80 on either side that can be inserted into both the first and second tubular receiving sections 72, 74. Preferably, this results in the door handle 10 being centrally located along the handlebar 104.

[0096] Advantageously, the handlebar 104 has no cross-sectional projections between the door handle 10 and the first and second receiving portions 72, 74, and has a continuous outer diameter d along the extension axis E. This makes it very easy to clean the handlebar 104 and prevents dirt from accumulating at the transitions from the door handle 10 to the first and second receiving portions 72, 74.

[0097] Preferably, the length of the handlebar 104 is between 250 mm and 800 mm, particularly preferably 400 mm, and the diameter d is between 18 mm and 55 mm, particularly preferably 30 mm, so that the user can at least partially grasp the handlebar 104 with one hand.

[0098] As shown in particular in FIG. 4b, the tubular first receiving part 72 is designed as a container 28 for containing a liquid (in particular a disinfectant). One end of the first receiving part 72 is connected fluid-tightly to a connector 26 of the door handle 10. For this purpose, a seal 18 (in particular two O-rings 19, each in a guide groove 34) is provided between the connector 26, which is also designed as a cylindrical connecting part 80 of reduced cross section of the door handle 10, and the interior 78 of the first receiving part 72, and is pressed in to provide a tight seal. A flow path 24 leads to the connector 26, conducting the liquid from the container 28 to the hollow part 16 of the door handle 10. Preferably, the connecting part 80 of reduced cross section, which is designed as the connector 26, has an opening in the direction of the hollow part 16 and defines the flow path 24 along the extension axis E.

[0099] Compared to the embodiment of FIG. 1, the tapered portion 56 shown in this example is designed as a connector 26, through which the flow passage 24 opens.

[0100] The door handle 10 is press-fitted into the first receiving portion 72, in particular by means of the pressed-in seal 18. Furthermore, the door handle 10, which has a connecting portion 80 of reduced cross section, is also adapted to be connected by form-fitting to the lower second receiving portion 74, and in the installed state of the pull handle 102, is also connected to the door leaf 46.

[0101] At the other end, the first container 72 has a lid 60 that closes the first container 72, which is designed as a container 28. This allows the container 28 to be easily filled or refilled with liquid.

[0102] The lid 60 can be connected to the container 28 by press-fitting and / or form-locking. Preferably, the lid 60 is insertable or screwable. More preferably, the lid 60 is protected against theft and unwanted filling of the container by a security mechanism (not shown), in particular by a lockable lock. Alternatively, the screwable lid 60 may have a security mechanism in the form of notches (in particular two holes, preferably blind holes) on its front surface along the extension axis E, which can only be operated with a corresponding special tool.

[0103] Preferably, the volume of the container is between 100 mL and 700 mL, particularly preferably 400 mL. The larger the volume, the greater the preferred so that the number of operating cycles is as large as possible.

[0104] 4a and 4b depict first and second tubular receiving sections 72, 74 each equipped with an attachment element 76 for attaching a handlebar 104 to the door leaf 46. The attachment element 76 provides a distance between the handlebar 104 and the leaf 46 such that a user can grasp the handlebar 104 with their hands.

[0105] Preferably, the first storage section 72 is located above the door handle 10, and the extension axis E of the handlebar 104 is aligned with the direction of gravity g, so that the liquid in the container 28 flows through the flow path 24 into the hollow section 16, preferably without the need for a complex delivery mechanism.

[0106] The door handle 10 including the actuating element 12 shown in Figure 4b is essentially the same as that of Figure 2a and can be operated in the same way as in the previously described figures. Preferably, the actuating element 12 in this example can be actuated by pressure F, in particular by pressure on the door leaf 46 and the return element 30 (in particular on the two pressure springs 36) in a direction perpendicular to the direction of gravity g.

[0107] Unlike Figures 1 and 2a, the door handle 10 shown in this example, which is installed as a pull handle 102, has connecting portions 80 of reduced cross section on both sides, and the container 28 is connected to the door handle 10 along the extension axis E or longitudinal central axis 50 of the door handle, and a flow path 24 communicates between the door handle 10 and the connector 26 along the extension axis E.

[0108] The actuating element 12 is provided on the handlebar 104 on the opposite side from the mounting element 76, particularly with the door handle 10 rotated about the extension axis E, so that the actuating element 12 can be operated by manual pressure, particularly pressure F applied by the user using the base of the hand, and the door can be simultaneously opened by pressure.

[0109] Particularly preferably, the pressure F on the door handle 10 for actuating the pull handle 102, in particular for displacing the door at the door hinge against the return element 30, corresponds to or exceeds the force for displacing the actuating element 12 to said third position against the force of said return element 30. This allows the door handle 10 to have a certain leak-tightness, since in said third position of the actuating element 12 the hollow portion 16 and / or the flow passage 24 are closed.

[0110] Alternatively, the door handle 10 may be arranged rotated by approximately 180° about the extension axis E. In that case, the actuating element 12 can be operated preferably by traction, in particular by the user's fingers. The present disclosure includes the following aspects as embodiments. [Aspect 1] A door handle, in particular a door handle for an interior and / or exterior door of a public building and / or business, an actuating element (12) for disinfecting a handle surface (14) of the door handle (10), the actuating element (12) being at least partially disposed within the door handle (10) to form a hollow portion (16) within the door handle (10) in a first, unactuated position; a flow path (24) communicating with the door handle (10), the flow path (24) opening at one end into the hollow portion (16) and having a connector (26) at the other end, the connector (26) being connected to a container (28) so as to conduct a liquid, in particular a disinfectant, from the container (28) through the flow path (24) and the connector (26) into the hollow portion (16); and the actuating element (12) being manually displaceable against at least one return element (30). the hollow portion (16) is sealed by at least one seal (18) between a first sealing surface (20) of the actuating element (12) and a second sealing surface (22) of the door handle (10); a notch (32) is formed in at least one of the sealing surfaces (20, 22) to separate the seal material (18) from at least one of the sealing surfaces (20, 22) when the operating element (12) is in the second position, thereby reducing the volume of the hollow portion (16) compared to when the operating element (12) is in the first position; the blocking portion (44) of the first sealing surface (20) is positioned and oriented such that, when the actuating element (12) is displaced from the first position to the second position, the blocking portion (44) of the actuating element (12) at a transition between the hollow portion (16) and the flow path (24) at least partially closes or blocks the flow path (24) and the actuating element (12) moves the liquid from the hollow portion (16) toward the handle face (16); A door handle characterized in that, in the third position of the operating element (12), the sealing material (18) is pressed against both of the sealing surfaces (20, 22), the volume of the hollow portion (16) is further reduced compared to the second position, and the flow path (24) and / or the hollow portion (16) is completely closed. [Aspect 2] In the door handle described in aspect 1, the operating element (12) is at least partially positioned within the door handle (10) so that the volume of the hollow portion (16) can be reduced by moving the operating element (12) in the direction of gravity (g) when the door handle (10) is attached to the door leaf (46). Aspect 3 The door handle according to aspect 1 or 2, characterized in that the container (28) is liquid-tightly connected to the discharge side or discharge portion (48) on the door handle (10) in the direction of gravity (g), preferably by screws. Aspect 4 In the door handle described in any one of aspects 1 to 3, the sealing material (18) is an elastic O-ring (19) and is fitted into a groove (34) of one of the sealing surfaces (20, 22), and one of the notch portion (32) and the groove (34) is formed in each of the sealing surfaces (20, 22). Aspect 5 A door handle according to any one of aspects 1 to 4, characterized in that in the first position of the operating element (12), the adhesion force between the sealing material (18) and the sealing surfaces (20, 22) is greater than the force of the return element so that the operating element (10) is clamped and fixed within the door handle (10). Aspect 6 A door handle according to any one of aspects 1 to 5, characterized in that the return element (30) comprises a plurality of springs (36), preferably two springs (36), particularly preferably three springs (36), in particular helical coil springs, each guided in a recess (38) of the actuating element (12), in particular in a blind hole. Aspect 7 A door handle according to any one of aspects 1 to 6, characterized in that the door handle (10) is configured as a round cylindrical part, preferably a round cylindrical part having a diameter (d) of 18 mm to 22 mm, and preferably the hollow portion (16) is realized in the door handle (10) as an elongated hole having a length (l) of 65 mm to 75 mm and a width (b) of 10 mm to 14 mm, and the width of the gap (t) between the sealing surfaces (20, 22) and outside the cutout portion (32) is 0.1 mm to 0.5 mm. Aspect 8 In the door handle of any one of the first to seventh aspects, the volume of the hollow portion (16) is 2.2 cm 3 in the first position of the actuating element (12). 3 ~3cm 3 A door handle characterized by being equivalent to Aspect 9 The door handle according to any one of the first to eighth aspects, characterized in that the door handle (10) and the actuation element (12) are made of metal, preferably aluminum or stainless steel. Aspect 10 The door handle according to any one of aspects 1 to 9, wherein the handle surface (14) is a rough surface that has been subjected to a blasting treatment, preferably a blasting treatment by sand jet or shot blasting, and the surface roughness measured in accordance with ISO 8503 is 20 μm to 40 μm so as to increase the contact angle between the handle surface (14) and a disinfectant. Aspect 11 A door fitting comprising a bolt (40) and a door handle (10) including an actuation element (12) according to any one of aspects 1 to 10, The door handle (10) is attached perpendicularly to the bolt (40) and is screwed to prevent rotation about a central axis (50) in the longitudinal direction of the door handle (10). Aspect 12 A door fitting according to claim 11, characterized in that the pressure (F) on the door handle (10) for actuating the door fitting (100), in particular for deforming the torsion spring, is equal to or greater than the force for displacing the actuating element (12) to the third position against the force of the return element (30). Aspect 13 A door having the door fitting according to aspect 11 or 12, wherein the door handle (12) is attached to one or both sides of the door. Aspect 14 A door according to claim 13, wherein a container (28) is fixed to the door leaf (46) and connected to the flow path (24) of the door handle (10) via a tube. Aspect 15 A door handle (10) comprising a pull handle, in particular a curved handle, and an actuation element (12) according to aspect 1, preferably according to any one of aspects 3 to 10, The pull handle (102) comprises a housing (70) forming a handlebar (104), preferably a cylindrical or tubular handlebar (104), having a common extension axis E with the door handle (10), and the housing (70) forms the container (28) as a tubular first housing portion (72) connected at one end to the connector (26) of the door handle (10). Aspect 16 In the pull handle described in aspect 15, the door handle (10) is insertably connected to the tubular first accommodating portion (72) at one end and to the tubular second accommodating portion (74) at the other end, and the connector (26) of the door handle (10) includes a circumferential seal material (18) to seal the tubular first accommodating portion (72) as a container (28). Aspect 17 A door having at least one pull handle (102) according to aspect 15 or 16, wherein the cylindrical handle bar (104) of the pull handle (102) is attached to one or both sides of the door in the housing (70) using at least one attachment element (76). Aspect 18 In the door described in aspect 17, the extension axis (E) of the pull handle (102) is oriented so that liquid flows due to gravity (g) through the tubular first storage portion (72) as a container (28) to the door handle (10), and preferably, the extension axis (E) of the pull handle (102) is oriented parallel to the direction of gravity (g). [Explanation of symbols]

[0111] 10 Door Handle 12 Actuating Elements 14 Handle surface 16 Hollow part 18 Sealing material 19 O-ring 20 first sealing surface of the actuating element 22 Door handle second sealing surface 24 flow paths 26 Connectors 28 Container 30 Return element 32 Notch 34 Groove 36 Spring 38 Recess of actuating element 40 volts 42 Underside of actuating element 43 Bottom of hollow section 44 Breaker 46 Door leaf 48 Container discharge part 50 Longitudinal central axis 52 Gap 54 Notch of actuating element 56 Tapered part of door handle 58 Door fitting attachment elements 60 Container Lid 70 Tubular storage section 72 First storage section 74 Second Storage Unit 76 Pull handle mounting element 78 Inside the first storage compartment 80 Connection part with reduced cross section in door handle 100 Door mounting parts 102 Pull Handle 104 Handlebar E. Extension axis of handlebar 104 b,l Width and length of hollow part d Door handle diameter t Gap distance between sealing faces F. Pressure on the actuating element by the user h Height of the actuating element g direction of gravity x, y, z Cartesian coordinate system axes

Claims

1. A door handle, an actuating element (12) for disinfecting a handle surface (14) of the door handle (10), the actuating element (12) being at least partially disposed within the door handle (10) to form a hollow portion (16) within the door handle (10) in a first, unactuated position; a flow path (24) communicating with the door handle (10), the flow path (24) opening at one end into the hollow portion (16) and having a connector (26) at the other end, the connector (26) being connected to a container (28) so as to conduct liquid from the container (28) through the flow path (24) and the connector (26) into the hollow portion (16); and the actuating element (12) being manually displaceable against at least one return element (30). The hollow portion (16) is sealed by at least one seal (18) between a first sealing surface (20) of the actuating element (12) and a second sealing surface (22) of the door handle (10); a notch (32) is formed in at least one of the first sealing surface (20) and the second sealing surface (22), which causes the seal material (18) to be separated from the at least one sealing surface (20, 22) when the operating element (12) is in the second position, thereby reducing the volume of the hollow portion (16) compared to when the operating element (12) is in the first position; the blocking portion (44) of the first sealing surface (20) is positioned and oriented such that, when the actuating element (12) is displaced from the first position to the second position, the blocking portion (44) of the actuating element (12) at a transition between the hollow portion (16) and the flow path (24) at least partially closes or blocks the flow path (24) and the actuating element (12) moves the liquid from the hollow portion (16) toward the handle face (14); In a third position of the operating element (12), the sealing material (18) is pressed against both the first sealing surface (20) and the second sealing surface (22), so that the volume of the hollow portion (16) is further reduced compared to the second position, and the flow path (24) and / or the hollow portion (16) is completely closed.

2. 2. The door handle of claim 1, wherein the actuating element (12) is at least partially disposed within the door handle (10) such that the volume of the hollow portion (16) can be reduced by moving the actuating element (12) in the direction of gravity (g) when the door handle (10) is attached to the door leaf (46).

3. 3. The door handle according to claim 1 or 2, characterized in that the container (28) is connected in a liquid-tight manner in the direction of gravity (g) to a discharge side or discharge portion (48) on the door handle (10).

4. 4. The door handle according to claim 1, wherein the sealing material (18) is an elastic O-ring (19) and is fitted into a groove (34) in one of the first sealing surface (20) and the second sealing surface (22), and wherein one of the notch (32) and the groove (34) is formed in each of the first sealing surface (20) and the second sealing surface (22).

5. 5. The door handle according to claim 1, wherein in the first position of the operating element (12), the adhesion force between the seal (18) and the first sealing surface (20) and the second sealing surface (22) is greater than the force of the return element so that the operating element (12) is clamped and fixed within the door handle (10).

6. 6. A door handle according to any one of claims 1 to 5, characterized in that the return element (30) comprises a plurality of springs (36) each guided in a recess (38) of the actuating element (12).

7. Door handle according to any one of claims 1 to 6, characterized in that the door handle (10) is configured as a round cylindrical part.

8. 8. The door handle according to claim 1, wherein the volume of the hollow portion (16) is 2.2 cm in the first position of the actuating element (12). ３ ~3cm ３ A door handle characterized by being equivalent to

9. A door handle according to any one of claims 1 to 8, characterized in that the door handle (10) and the actuating element (12) are made of metal.

10. The door handle according to any one of claims 1 to 9, wherein the handle surface (14) is a rough surface that has been subjected to a blasting treatment, and the surface roughness measured in accordance with ISO 8503 is 20 μm to 40 μm so as to increase the contact angle between the handle surface (14) and a disinfectant.

11. A door fitting comprising a bolt (40) and a door handle (10) according to any one of claims 1 to 10, The door handle (10) is attached perpendicularly to the bolt (40) and is screwed to prevent rotation about a central longitudinal axis (50) of the door handle (10).

12. 12. The door fitting according to claim 11, wherein a pressure (F) on the door handle (10) for actuating the door fitting (100) corresponds to or exceeds a force for displacing the actuating element (12) to the third position against the force of the return element (30).

13. A door with a door fitting according to claim 11 or 12, wherein the door handle (10) is mounted on one or both sides of the door.

14. The door of claim 13, wherein a container (28) is fixed to a door leaf (46) and is connected to the flow passage (24) of the door handle (10) via a tube.

15. A pull handle comprising a door handle (10) according to claim 1, The pull handle (102) comprises a housing (70) that forms a handlebar (104) having a common extension axis (E) with the door handle (10), and the housing (70) forms the container (28) as a tubular first housing portion (72) connected at one end to the connector (26) of the door handle (10).

16. 16. The pull handle of claim 15, wherein the door handle (10) is insertably connected at one end to the tubular first accommodating portion (72) and at the other end to the tubular second accommodating portion (74), and the connector (26) of the door handle (10) includes a circumferential seal (18) to seal the tubular first accommodating portion (72) as a container (28).

17. 17. A door comprising at least one pull handle (102) according to claim 15 or 16, wherein the handle bar (104) of the pull handle (102) is cylindrical and is attached to one or both sides of the door in the housing (70) using at least one attachment element (76).

18. 18. The door according to claim 17, wherein the extension axis (E) of the pull handle (102) is oriented so that liquid flows by gravity (g) through the tubular first container (72) as a container (28) to the door handle (10).

Images