EP3781008A1

EP3781008A1 - Holding device for a portable hard surface cleaning appliance, and set

Info

Publication number: EP3781008A1
Application number: EP19719477.2A
Authority: EP
Inventors: Eugenio Venturini; Filippo Costa; Ottorino Gorni; Christoph Sagkob
Original assignee: Alfred Kaercher SE and Co KG
Current assignee: Alfred Kaercher SE and Co KG
Priority date: 2018-04-18
Filing date: 2019-04-18
Publication date: 2021-02-24
Also published as: CN112423635B; CN112423635A; WO2019202081A1

Abstract

In order to improve a holding device for a portable hard surface cleaning appliance, in particular in the form of a window cleaning device, which holding device comprises a holding part and an extension part, which holding part comprises a first connector for connecting the holding device to a hard surface cleaning appliance, and which extension part comprises a second connector for connecting the holding device to an extension element, in particular in the form of an extension rod or an extension tube, so that the holding device can be used as universally as possible, according to the invention the first connector comprises at least two holding elements for at least partially engaging and coupling in a force-closed manner to a housing region, in particular a handle region, of the hard surface cleaning appliance.

Description

Holding device for a portable hard surface cleaning device and set

The present invention relates to a holding device for a portable hard surface cleaning device, in particular in the form of a window cleaning device, which holding device comprises a holding part and an extension part, which holding part comprises a first connection device for connecting the holding device with a hard surface cleaning device, and which extension part a second connecting means for connecting the holding device with an extension element, in particular in the form of an extension rod or an extension tube comprises.

Furthermore, the present invention relates to a set comprising a first portable hard surface cleaning device and a device which can be coupled to the first hard surface cleaning device.

A holding device and a set of the type described above are known for example from EP 3 021 725 Bl. In the known holding device, a receptacle corresponding to a housing region of the hard surface cleaning device is formed for pre-fixing the same on a hard surface cleaning device into which the housing region of the hard surface cleaning device is received in a form-fitting manner. A final attachment of the hard surface cleaning device to the holding device via a holding teband or a belt.

Due to the specially formed receptacle on the known holding device coupling with different hard surface cleaning devices is not possible or only to a limited extent, wherein a secure hold of Hartflächenreinigungs- device on the holding device can not be ensured with the required security, if the recording on the fixture not corresponds to a housing area of the hard surface cleaning device. It is therefore an object of the present invention, a holding device and a set of the type described above to improve so that they are as universally applicable.

This object is achieved in a holding device of the type described above according to the invention in that the first connection means comprises at least two holding elements for at least partially encompassing and non-positive coupling with a housing portion, namely a handle portion of the hard surface cleaning device.

The proposed further development of a known holding device has the particular advantage that it is possible to dispense with a form-fitting receptacle for receiving a housing region, in particular a housing region comprising a standing surface of the portable hard surface cleaning device, as described, for example, in EP 2 890 283 B1 , An attachment can be carried out in particular with the at least two retaining elements. In particular, with the at least two retaining elements, a pre-fixation of the hard surface cleaning device to the holding device can be achieved, for example, to mount an optional retaining element in the form of a retaining band or belt, in order to keep the hard surface cleaning device secured to the holding device as turnably and tilt-stable as possible. The at least two holding elements can each define a holding or clamping surface, wherein each of the at least two holding elements can also define two or more holding or clamping surfaces. The greater the number of holding or clamping surfaces that are defined by the at least two holding elements, the more stable can the hard surface cleaning device be attached to the holding device without undesired relative movement between the hard surface cleaning device and the holding device being possible. The at least partially encompassing and non-positive coupling of the at least two retaining elements with the grip region of the housing region of the hard surface cleaning device allows, in particular, a simple adaptation to different shapes and sizes of grip regions, so that the retaining elements Device can also be easily and safely connected to differently shaped hard surface cleaning devices. The proposed at least two holding elements make it possible, in particular, to completely dispense with a form fit for connecting the hard surface cleaning device to the holding device. This has the particular advantage that the holding device can be coupled more flexibly with different hard surface cleaning devices. A special adaptation of a receptacle for a specific housing area of a specific hard surface cleaning device, as is known from EP 2 890 283 B1, is therefore not absolutely necessary, but can optionally be provided. The described frictional connection for holding the housing region of the hard surface cleaning device with the at least two holding elements can be specified in particular by the choice of a shape of the holding elements and / or by the material of which they are formed. Optionally, it is also conceivable to provide additionally biasing elements which hold the at least two holding elements biased against one another in a basic position and which then also provide the force required to produce the frictional connection between the at least two holding elements and the housing area of the hard surface cleaning device ,

It is favorable if at least one or two of the at least two retaining elements or if all the retaining elements are designed in the form of an elastically or essentially elastically resilient clamping arm. Such holding elements can deform elastically to a certain extent and thus adapt to different housing areas of different hard surface cleaning devices, so that the holding device can be selectively connected to different hard surface cleaning devices.

Conveniently, the clamping arm is made of an elastically deformable material, in particular of a plastic. For example, it may be a molded by injection molding clamping arm made of a thermoplastic plastic. The holding device can be coupled or connected in a particularly simple and secure manner to a hard surface cleaning device if the at least two holding elements are arranged or formed in pairs, in particular in pairs mirror-symmetrically to one another. By way of example, the at least two retaining elements can thus at least partially surround a housing area on both sides and thus securely clamp the housing area between them. A mirror-symmetrical arrangement in particular facilitates handling and simplifies the design effort for the production of the holding device. In particular, symmetrically shaped grip areas can also be held in a force-fitting manner with the holding device simply and securely.

It is favorable if free ends of pairs of holding elements are arranged pointing away from one another and if the free ends define an insertion region with sliding surfaces for the housing area of the hard surface cleaning device facing one another or substantially mutually facing each other. In particular, the proposed development makes it possible to introduce the housing area of the hard surface cleaning device which is to be introduced between the two retaining elements in a simple, preferably tilt-free manner. In particular, the free ends of the retaining elements can thus be moved away from one another during the insertion of the housing region between the retaining elements and, after complete insertion of the housing region of the hard surface cleaning device, spring back somewhat between the paired retaining elements so that they secure the housing region can hold force.

It is advantageous if the paired holding elements are arranged or formed spaced from each other and define a constriction or constriction between them. In particular, the bottleneck or constriction may adjoin the insertion area. For example, when the housing region is inserted between them, the paired holding elements can be maximally spread apart when the housing region passes through the narrow or narrowed region. After passing through the constriction or constriction, the paired holding elements can then be slightly in Spring back to their original position or recede to at least partially enclose the housing portion of the hard surface cleaning device and secure against loosening of the holding device.

It is favorable if the first connecting device defines a first longitudinal axis and if the constriction or narrowing defines an angle relative to the first longitudinal axis in the circumferential direction, which angle has a value in a range of about 10 ° to about 120 °. In particular, the angular range may have a value of about 40 ° to about 90 °. On the one hand, such a bottleneck or constriction allows, in particular, a simple insertion of the housing area of the hard surface cleaning device between the at least two retaining elements and, on the other hand, a secure frictional hold of the hard surface cleaning device on the retaining device.

Preferably, the holding device comprises two, four or six holding elements. In particular, the advantage of having four or six holding elements is that a plurality of contact points can be predetermined between the holding device and the hard surface cleaning device in order to achieve the most secure possible retention of the hard surface cleaning device on the holding device, in particular in order to temporarily connect it to the holding device. before it can be additionally optionally secured with the already mentioned retaining element.

According to a further preferred embodiment of the invention, it can be provided that the first connecting device defines a first longitudinal axis and that the at least two retaining elements are arranged or formed at least partially surrounding the first longitudinal axis. Such a configuration makes it possible, in particular, to define a receiving space or a receiving area by means of the at least two holding elements into which the housing area of the hard surface cleaning device can be accommodated. In particular, by arranging and configuring the at least two holding elements, an area between them can be designed to be variable, in order in particular to distinguish differently shaped housing areas. record different Hartflächenreinigungsgeräte and hold force.

In order to achieve in particular a secure connection between the holding device and the hard surface cleaning device, for example, to prevent tilting or rotation of the holding device relative to hard surface cleaning device about a tilt axis, which is transverse to the first longitudinal axis to prevent, it is advantageous if the Holding device comprises two pairs of two holding elements, which two pairs are arranged axially offset relative to each other with respect to the first longitudinal axis or formed. The farther the two pairs are spaced apart, the more reliably tilting of the holding device and the hard surface cleaning device relative to each other can be prevented. The two pairs of two holding elements can also each form two units, for example in the form of a clamp with two clamping arms, wherein two holding elements are arranged or formed on each clamping arm.

In order to allow the most flexible possible adaptation of the holding device to different housing areas of different hard surface cleaning devices, it is advantageous if the two pairs of two holding elements in shape and size are designed to be distinguishable from each other. In particular, they may have different distances from each other.

It is expedient if the first connecting device comprises at least one first abutment surface for application to a housing region of the hard surface cleaning device and if the at least two retaining elements are arranged or formed laterally relative to the first longitudinal axis in the circumferential direction on the at least one abutment surface or laterally abut it - zen. Thus, in particular, the housing region of the hard surface cleaning device to be frictionally held between the at least two holding elements can be supported at several points, whereby a risk of relative movement between the holding device and the hard surface cleaning device can be minimized. It is favorable if the at least two holding elements define at least one holding receptacle for the housing region and if the holding receptacle defines a cross-sectional shape which deviates from a circular shape relative to the first longitudinal axis. In particular, such a holding fixture makes it possible to pick up differently shaped housing areas of different hard surface cleaning devices in a simple and reliable manner.

An adaptation of the holding device to different housing areas of different hard surface cleaning devices can be further improved if the two pairs of two holding elements each define a first holding receptacle and a second holding receptacle which differ in shape and / or size from each other. This makes it possible, in particular, to engage with the two pairs of two holding elements on different housing areas of the hard surface cleaning device, in order to enable a sufficiently stable non-positive connection between the holding device and the hard surface cleaning device.

According to a further preferred embodiment of the invention, it can be provided that the first connecting device comprises at least one retaining element which secures in at least one retaining position the housing area of the hard surface cleaning device accommodated between the at least two retaining elements in the retaining receptacle and in an insertion position Haltaufnahme releases. The at least two holding elements can therefore serve, in particular, to temporarily connect the holding device to the hard surface cleaning device in order to release one or both hands for applying the restraining element or for transferring the restraining element from the insertion position into the at least one restraint position. Depending on the arrangement and shape and size of the at least one retaining element, a sufficient frictional connection between the retaining device and the hard surface cleaning device can be generated in conjunction with the at least two retaining elements. In particular, by appropriate arrangement and design of the holding elements ments and the at least one retaining element tilting of the holding device relative to the hard surface cleaning device about a tilt axis, which extends transversely to the first longitudinal axis, can be avoided.

It is favorable if the at least one retaining element in a first retaining position and in at least one second retaining position secures the housing area of the hard surface cleaning device accommodated between the at least two retaining elements in the at least one retaining receptacle and if a first cross-sectional shape and / or a first cross-sectional shape Cross-sectional area of a receiving area, which is defined or limited by the at least one retaining element in the first retaining position, of a second cross-sectional shape and / or a second cross-sectional area of the receiving area, which defines of the at least one retaining element in the second retaining position or limited, differentiates. In other words, the at least one retaining element in different closed positions, which define the different restraint positions, can be applied at least partially around the housing area of the hard surface cleaning device. In particular, different housing areas with different cross-sectional shapes or different cross-sectional areas that are accommodated between the retaining elements can be secured to the retaining device with the at least one retaining element. The different restraint positions make possible an individual adaptation of the at least one retaining element, in particular with respect to its length or its free length, to the housing area of the hard surface cleaning device.

It is advantageous if the at least one retaining element has a free end if a first closure element is arranged or formed at the free end, if at least one second closure element is formed on the holding part and if the first closure element and the at least one second closure element Closing element are formed correspondingly and in the at least one retaining position force and / or form-fitting engage. By engaging the first a second encrypting ment can hold the housing portion partially embracing retaining element this non-positively on the holding device, in addition to the at least two holding elements.

Furthermore, it can be favorable if at least two second closure elements are formed on the holding part and if the first closure element in the first restraint position is non-positively and / or positively engaged with one of the at least two second closure elements and if the closure element in the second restraint position with another of the at least two second closure elements non-positively and / or positively engaged. As a result of the at least two second closure elements, the at least one retaining element with different free lengths can be secured to the holding part in order to securely hold, in particular, housing regions with different cross-sectional shapes or different cross-sectional areas on the holding device.

In order to prevent in particular a tilting of the adhesive surface cleaning device on the holding device in a connecting position in which it is non-positively held with the at least two retaining elements and the at least one retaining element on the holding device, it is advantageous if the at least one retaining element based on the Axially offset longitudinal axis between the two pairs of two holding elements arranged or formed. Thus, in particular, an above-described tilting about a tilt axis extending transversely to the first longitudinal axis between the hard surface cleaning device and the holding device can be prevented.

The holding device can be designed in a simple and cost-effective manner if the at least one retaining element is in the form of a retaining band or a belt.

Preferably, the at least one retaining element is formed from an elastic and / or flexible material. In particular, it may be formed of rubber. Such a retaining element adapts optimally to different forms of housing areas of hard surface cleaning devices.

Furthermore, it may be favorable if at least one protective element is arranged or formed on the holding part, which is assigned to one of the at least two holding elements. In particular, it is possible to provide as many protective elements as correspond to the number of holding parts. The at least one protective element can in particular also define a limit for a maximum housing area of a hard surface cleaning device. Furthermore, they can also protect the at least two retaining elements from damage.

It is advantageous if the at least one protective element is spaced from the holding element to which it is associated with respect to the first longitudinal axis in the axial and / or radial direction and if a distance of the protective element from the first longitudinal axis increases in the radial direction is a distance of the associated holding element from the first longitudinal axis. In particular, holding devices can be formed in which the at least one protective element protects one or more holding elements surrounding the longitudinal axis pointing away.

In a simple and cost-effective manner, the holding device can educile, if the at least one protective element is formed bow-shaped. In particular, the at least one protective element can be designed in the form of a ring-shaped bracket, which can also be arranged or formed above a free end of the at least one retaining element.

In a further preferred embodiment of the invention it can be provided that the at least one protective element has a free protective element end and that a distance of the free protective element end from the first longitudinal axis is greater than a distance of the free end of the associated holding element from the first first longitudinal axis. By this configuration is In particular, it is possible with the at least one protective element to protect the associated holding element, in particular its free end, from damage.

It is favorable if the at least two retaining elements point towards the first longitudinal axis or substantially toward the first longitudinal axis

Define clamping surfaces and when the clamping surfaces have a shape which differs from a section of a hollow cylindrical, concentric with the first longitudinal axis surface. In particular, they can deviate from a hollow-cylindrical surface in the axial direction with respect to the first longitudinal axis. Instead, in order to allow optimum adaptation to different housing areas of different hard surface cleaning devices, they can be curved in the direction of the first longitudinal axis, in particular concave or convex. There are also multiple curvatures, especially with different radii conceivable.

Preferably, the clamping surfaces are convexly curved at least in one spatial direction, in particular in two or three, pointing in the direction of the longitudinal axis. In this way, optimal contact areas with the holding device can be defined in order to be able to hold differently shaped, in particular exclusively frictionally engaged, gripping areas of different hard surface cleaning devices encompassed or formed by housing areas.

Furthermore, it is favorable if the second connecting device comprises a connecting element for connecting to a free end of the extension element. Thus, the extension element, for example an extension rod or an extension tube, can be easily and safely coupled to the holding device, for example to use the hard surface cleaning device at working heights, which would otherwise require a ladder if the hard surface cleaning device were held in the hand by a user , A particularly stable connection between the holding device and the extension element can be achieved in particular in that the connecting element is designed in the form of a connection receptacle for receiving the free end of the extension element. For example, an additional latching connection device can be provided in the region of the connection receptacle in order to secure the extension element to the second connection device in a connection position.

In order in particular to be able to produce a rotation-stable connection between the extension element and the connection element of the second connection device, it is advantageous if the second connection device defines a second longitudinal axis and if the connection element defines a cross-sectional shape relative to the second longitudinal axis deviates from a circular shape. Thus, in particular already by the cross-sectional shape a positive and in particular rotationally fixed connection can be achieved.

According to a further preferred embodiment of the invention can be provided, in particular also in a holding device of the type described above, that the holding device comprises a hinge device for articulated connection of the holding part and the extension part. In particular, a hinge device makes it possible to adjust or, in particular, to change the orientation of the holding part and the extension part in the desired manner. Depending on the device to be connected to the holding device, the articulation device can also be blocked or locked relative to one another with a locking device in a specific orientation of the holding part and of the extension part. Optionally, no such locking device can also be advantageous in order to clean a hard surface with the hard surface cleaning device which is connected to the holding device.

A particularly simple and defined relative movement between the holding part and the extension part can be achieved, for example, by in that the articulation device is designed to pivot the holding part and the extension part about a pivot axis. In particular, the hinge device can form a hinge joint between holding part and extension part in this way.

It is advantageous if the first connecting device defines a first longitudinal axis, if the second connecting device defines a second longitudinal axis and that the pivot axis extends transversely, in particular perpendicularly, to a plane which defines the first longitudinal axis and / or the second longitudinal axis. contains axis. In this way, an operator can easily and safely manipulate the holding device to move a hard surface cleaning device over a hard surface to be cleaned, even if the holding device is coupled to an extension element and the operator merely holds the extension element and thus the holding device and attached hard surface cleaning device holds and guides.

In a simple manner, the joint element and the extension part can be pivoted relative to one another when the articulation device comprises a first articulation element which is arranged or formed on the holding part, and a second articulation element which is arranged or formed on the extension part, and if first joint element and the second joint element are mounted pivotably about the pivot axis to each other.

The articulation device can be formed in a simple manner in particular in that the or the second joint element comprises a pivot pin defining the pivot axis and that the other joint element has a pivot pin receptacle which corresponds to the pivot pin and in which the pivot pin engages.

In order in particular to avoid unintentional release of the holding part and of the extension part from one another, it is expedient for the holding part and the extension part to be held together in a secure manner relative to the pivot axis in the axial direction. This stabilizes in particular the joint direction, because preferably the first joint element and the second joint element are secured relative to the pivot axis in the axial direction held together.

According to a further preferred embodiment of the invention can be provided, in particular in a holding device of the type described above, that the holding device comprises a locking device for locking the holding part and the extension part relative to each other in at least one locking position. In particular, if a free adaptation of the hard surface cleaning device held by the holding device relative to a hard surface to be cleaned is not desired, the locking device makes it possible to guide the hard surface cleaning device as desired, even if the operator has a device connected to the holding device Hold extension element to hold and guide the hard surface cleaning device for cleaning. A locking of the holding part and the extension part relative to each other is particularly advantageous if a so-called window suction is used as Hartflächenreinigungsgerät which predetermines a linear contact with the hard surface to be machined, for example with a Abziehlippe. By Arretierungsmöglichkeit this line contact can then be maintained by the user in the desired manner even if he does not hold the Hartflächenreinigungsgerät in his hand and leads, but if he holds and leads an extension element, which is coupled to the holding device, which in turn with the Hard surface cleaning device is connected. In hard surface cleaning devices, which should be as flat as possible, so with a surface contact, to rest against the surface to be cleaned, it is on the other hand favorable if the holding part and the extension part are freely pivotable relative to each other. Optionally, a maximum pivoting range can be preset by means of corresponding stops, so that pivoting is possibly only possible in a certain angular range, for example in a range between 0 ° and 180 ° between the first longitudinal axis and the second longitudinal axis. It is advantageous if the locking device can be brought from the at least one locking position into a release position, in which the retaining part and the extension part are pivotable relative to each other freely about the pivot axis, and vice versa. This embodiment of the locking device makes it possible, in particular, to cancel a set relative position between the holding part and the extension part, to pivot the holding part and the extension part relative to each other about the pivot axis and, if necessary, to secure them against pivoting in another relative position, ie in FIG to transfer another locking position.

In order to enable an individual use of the holding device, it is favorable if the locking device defines a plurality of locking positions for locking the holding part and the extension part in different pivoting positions relative to each other. Different pivot positions can in particular define different angles which enclose the first longitudinal axis and the second longitudinal axis between them. Thus, an alignment of the hard surface cleaning device relative to an extension element can be set and locked in the desired manner.

The lock can be realized in a simple manner if the locking device comprises an armature element which is movably arranged on the joint device and can be moved from a locking position, in which the locking device assumes the at least one locking position, into an unlocking position, in which the locking device occupies the release position, and vice versa. By moving the locking member can thus lock the hinge device, so that a pivoting of the holding member and the extension member relative to each other is not possible, or by appropriate movement of the locking member, this locking position can be canceled, namely by moving the locking member in the unlocked position, so that the locking device assumes the release position. The holding device can be designed to be particularly compact if the locking element is mounted so as to be displaceable on the articulation device parallel to the pivot axis. In particular, the locking member can be arranged coaxially to the longitudinal axis and be mounted relative to this displaceable.

It is expedient if the locking member, regardless of whether it assumes the locking position or the unlocking position, is held non-rotatably on the first or second joint element, if it is rotatable about the pivot axis in the unlocking position relative to the other joint element and if it is non-rotatable in the locking position relative to the first and second hinge member. With such a locking member, a pivotability of the holding part and the extension part relative to each other in a simple manner can be activated and deactivated.

It is advantageous if the locking device is designed to be bistable and holds the locking member in the locking position as well as in the unlocking position without an actuating force acting on the locking member. In particular, the locking device can be configured without a restoring device, which in known locking devices either automatically returns the locking element into the locking position or automatically into the unlocking position and optionally holds it in one of these two positions. For example, such a bistable locking device can be achieved with a locking member which is displaced in an opposite direction for unlocking in a first direction and for locking.

In a simple way, the holding device can be handled when the locking member has a first actuating surface for introducing an actuating force for transferring the locking member from the locking position to the unlocking position and a second actuating surface for introducing an actuating force for transferring the locking member from the unlocked position in the locking position and when the first actuating surface and the second actuating surface in opposite or substantially in are formed pointing opposite directions. Such a locking member can for example be pushed back and forth in a corresponding receptacle in a simple manner by actuating the first actuating surface or by acting upon the second actuating surface with an actuating force. Without restoring device, the locking member then remains in the respective position, if no other forces act on the locking member, such as gravity, which could undesirably change it back into the locking position or unlocking position.

The holding device can be actuated simply and safely when the first and second actuating surfaces extend transversely, in particular vertically, to the pivot axis.

In order to achieve a stable locking of the hinge device even when large leverage forces acting on the hinge device, it is advantageous if the locking device comprises a first Arretierverzahnung and a corresponding second Arretierverzahnung when the first Arretierverzahnung is arranged or formed on the locking member and if second Arretierverzahnung is arranged or formed on that hinge element relative to which the locking member in the unlocked position about the pivot axis is rotatable, and when the first Arretierverzahnung and the second Arretierverzahnung in the locking position are engaged and disengaged in the release position. In principle, it would be conceivable to provide only one locking tooth and, instead of the other locking toothing, only one corresponding tooth. However, several interlocking teeth can absorb greater forces or moments and are less susceptible to damage.

It is expedient if the first locking toothing and the second locking toothing each comprise a plurality of locking teeth and if the plurality of locking teeth are disposed or formed so as to be wide in a direction parallel to the pivot axis. This makes it possible in particular by a movement of the locking member parallel to the pivot axis, the first and second locking teeth engage or disengage.

In a simple way, the holding device can be formed and in particular mounted when the locking member is formed in two parts and comprises two locking member parts. In particular, these can be connected to one another in a latching manner after the first and second joint elements have been coupled together.

In order to prevent the locking member from moving from the unlocking position to the locking position or vice versa due to the gravitational force, it is advantageous if the holding device comprises a latching device for holding the locking member in the locking position and in the unlocking position. For example, the locking member in the unlocking position and in the locking position abut on a locking member which assumes a basic position in both positions. For example, the locking member of the latching device against a reset leinrichtung, for example, a spring element, which may optionally be integrally formed with the locking member, are deflected when transferring the locking member from the locking position to the unlocked position or vice versa from a basic position to a deflected position from which it then automatically returns to the basic position when the locking member occupies one of the two defined positions. Thus, an undesired, in particular caused by the acting force of gravity movement of the locking member can be easily prevented.

Furthermore, it is advantageous, in particular also in the case of a holding device of the type described in the introduction, if the holding device is designed for detachable coupling with at least two differently shaped hard surface cleaning devices. In particular, the differently shaped hard surface cleaning devices can be different types of hard surface cleaning devices. Furthermore, they can also have different housing areas which can be flexibly adapted to the one described in the described manner first connection means of the holding device can be connected nen. The holding device can be highly flexibly combined and used in this way with a wide variety of hard surface cleaning devices. In other words, the holding device together with an extension element can serve as a versatile extension device for one or more hard surface cleaning devices.

In the case of a set of the type described at the outset, the object stated at the outset is also achieved according to the invention in that the holding device is designed in the form of one of the holding devices described above. For example, the holding device can be connected to an extension element so that a user can hold and guide the hard surface cleaning device via the extension element.

The set preferably comprises at least one extension element which can be coupled to the holding device. In particular, two, three or more extension elements may be provided which, for example, have different lengths so as to realize different lengths of extensions. Optionally, two or more extension elements can also be connected to each other so as to form an extension device consisting of individual extension elements. The at least one extension element can be designed in particular in the form of an extension rod or an extension tube.

In order to enable variable extensions, it is favorable if the at least one extension element is designed to be telescopic.

According to a further preferred embodiment of the invention, it can be provided that the set comprises at least one second portable hard surface cleaning device, which differs in its function and / or housing form from the first hard surface cleaning device. The holding device can therefore be used in particular to connect to the first or a second or another portable hard surface cleaning device to become. The described holding device makes it possible, in particular because of its construction, to be connected to differently shaped housing areas of housings of different hard surface cleaning devices.

It is expedient if the first hard surface cleaning device and / or the at least one second hard surface cleaning device are designed for drawing off and absorbing a liquid from a hard surface, in particular a window pane. With such a hard surface cleaning device can be cleaned moist cleaned hard surfaces of the cleaning liquid.

Moreover, it is expedient for the first hard surface cleaning device and / or the at least one second hard surface cleaning device to be designed in the form of a liquid application device for applying and / or wetting a hard surface, in particular a window pane, with a cleaning liquid. With such a hard surface cleaning device, it is possible in particular to dissolve dirt on the hard surface. The applied cleaning liquid can then be removed, for example, with a hard surface cleaning device for removing and absorbing liquid.

Furthermore, it is favorable if the first hard surface cleaning device and / or the at least one second hard surface cleaning device are designed in the form of a window cleaning device. With the holding device, in particular using an extension element, so can be cleaned by a user and discs for the user would otherwise require a ladder if he would hold the respective hard surface cleaning device directly in his hand and lead.

An optimal cleaning of windows allows in particular a set in which the window cleaning device is designed in the form of a window suction or a window humidifier. In particular, the set may comprise a window suction and a window humidifier and the holding device and at least one extension element. Furthermore, the use of one of the holding devices described above for connecting to a grip area of a hard surface cleaning device is proposed.

Gripping areas of hard surface cleaning devices generally have at least a similar shape, as they are designed to be gripped by a user by hand. Accordingly, dimensions of the grip area can only be selected so that a secure holding and guiding the hard surface cleaning device when holding the same with one hand on the grip area is possible.

Furthermore, the use of one of the holding devices described above is proposed for connecting exclusively to a grip region of a hard surface cleaning device.

In principle, it would be conceivable to connect the holding device with other areas of the hard surface cleaning device, for example, housing areas. The connection of the holding device to the gripping region of a hard surface cleaning device, in particular to the first connection device of the holding part, makes it possible to easily and safely connect a wide variety of hard surface cleaning devices with only one single holding device, ie a universal holding device.

The second connection device of the extension part does not necessarily have to be connected to an extension element. It is also conceivable, in particular, to couple the extension part to a machine, for example a robot, by means of the second connection device. It would also be conceivable to connect a user-specific, ergonomic handle to the extension part, so that a user does not grasp the hard surface cleaning device by its grip area, but by the handle which is coupled to the holding device and designed specifically for the user. The following description of preferred embodiments of the invention is used in conjunction with the drawings for further explanation. Show it :

Figure 1: a schematic representation of a holding device before

Connecting to a first hard surface cleaning device;

Figure 2 is a view similar to Figure 1, wherein the holding device with her

Holding part is connected to a handle portion of the first Hartflächenreinigungs- device;

FIG. 3 is a schematic representation of a second hard surface cleaning device and the holding device of FIG. 1 before bonding;

FIG. 4 shows a view similar to FIG. 3, wherein the retaining part of the retaining device is connected to a grip region of the second hard surface cleaning device;

Figure 5: a perspective view of the holding device of the figures

1 to 4;

FIG. 6 shows a view of the holding device from FIG. 5 in the direction of the FIG

Arrow A;

Figure 7 is a side view of the holding device of Figure 6 in the direction of arrow B;

FIG. 8 shows a side view of the holding device on FIG. 6 in the direction of the arrow C; FIG. 9 shows a side view of the holding device from FIG. 8 in the direction of the arrow D;

FIG. 10 shows a side view of the holding device from FIG. 8 in the direction of the arrow E; and

11 shows an exploded view of the holding device from FIG. 5

A first embodiment of a holding device 10 comprises a holding part 12 and an extension part 14. The holding part 12 comprises a first connecting device 16 for connecting the holding device 10 to a first hard surface cleaning device 18.

In one exemplary embodiment, the extension part 14 comprises a second connection device 20 for connecting the holding device 10 to an extension element 22, for example in the form of an extension rod 24 or an extension tube 26. Optionally, the extension part 14 can also be fitted with a suitable connection piece 28 on a machine, for example connected to a robot.

In one exemplary embodiment, the first connecting device 16 comprises a total of four holding elements 30 and 32. These are arranged or formed in pairs symmetrically with respect to a mirror plane 34, which contains a first longitudinal axis 36 defined by the first connecting device 16.

The two paired holding elements 30 and 32 form two pairs 38, 40 which, relative to the first longitudinal axis 36, are arranged or formed axially offset with respect to one another.

Instead of the four holding elements 30 and 32, only two holding elements 30 or 32 or, in addition to the four holding elements, two further holding elements can be used. be provided in one embodiment. Overall, so three pairs 38 and 40 of holding elements 30, 32 are formed.

The two holding elements 30 and 32 are designed for at least partially embracing and force-locking coupling with a housing region 42. The housing region 42 in one exemplary embodiment is a grip region 44 of the first hard surface cleaning device 18.

The holding elements 30 and 32 are in one embodiment of the holding device 10 in the form of elastic or substantially elastically resilient clamping arms or 48 formed.

In another embodiment, only one or two holding elements in the form of such a clamping arm are formed.

The clamping arms 46, 48 are preferably formed of an elastically deformable material. In particular, it is a plastic, for example a thermoplastic material.

Free ends 50, 52 of pairs of holding elements 30, 32 are designed facing away from one another in one exemplary embodiment and define therebetween an insertion region 54, 56 with sliding surfaces 58, 60 facing one another or substantially toward one another for the housing region 42 hard surface cleaning device 18.

The pairs of holding elements 30, 32 are spaced from one another or formed on the holding part 12 and define a constriction 62, 64 between them in one embodiment. The constriction or constriction 62, 64 in one exemplary embodiment directly adjoins the insertion region 54, 56 on.

The constriction or constriction 62, 64 defines in one exemplary embodiment an angle 66, also referred to as the opening angle, which in one embodiment rich from about 10 ° to about 120 °. In the embodiment shown schematically in the figures, the angle 66 is about 70 °.

In order to be able to securely hold the grip region 44, the retaining elements 30, 32 are arranged or formed partially surrounding the first longitudinal axis 36.

The two pairs 38 and 40 with the respective two holding elements 30 and 32 differ in shape and size from each other.

In particular, the holding elements 30, 32 define clamping surfaces 68, 70 pointing toward the first longitudinal axis 36 or substantially toward them. In one exemplary embodiment, these have a shape which is defined by a cutout of a hollow cylindrical surface concentric with the first longitudinal axis 36. che deviates. For example, the deviation in the axial direction relative to the first longitudinal axis 36 may occur.

In one embodiment, the clamping surfaces 68, 70 are convexly curved in at least one spatial direction in the direction of the longitudinal axis 36. In the embodiments of the holding device 10 shown in the figures, the clamping surfaces 68, 70 are convexly curved both in a direction parallel to the first longitudinal axis 36 and in a direction transverse thereto in the direction of the longitudinal axis 36. This allows, in particular, defined, point or line-shaped contact areas on the grip area 44, regardless of the specific shape thereof.

In one embodiment of the holding device 10, the second connecting device 20 comprises a connecting element 72 for connecting, in particular, to a free end of the extension element 22.

In one embodiment, the connecting element 72 is designed in the form of a connection receptacle 74 for receiving the free end of the extension element 22. The second connector 20 defines a second longitudinal axis 76. In one embodiment, the connector 72 defines a cross-sectional shape with respect to the second longitudinal axis 76 that deviates from a circular shape. In particular, the cross-sectional shape may be oval, triangular, quadrangular, pentagonal or hexagonal.

In one embodiment, the first connection device 16 has one or more contact surfaces 78 for application to the housing region 42 of the hard surface cleaning device 18.

The two or four holding elements 30, 32 are arranged laterally on the abutment surface 78 with respect to the first longitudinal axis 36 in the circumferential direction or are formed or bound laterally.

The two pairs 38, 40 of each of two holding elements 30 and 32 define a first holding receptacle 80 and a second holding receptacle 82, which differ in shape and / or size from each other. The holding receivers 80, 82 serve to receive the housing region 42 and in one exemplary embodiment define a cross-sectional shape, which deviates from a circular shape, relative to the first longitudinal axis 36. In particular, the cross-sectional shape can be oval.

With the exemplary embodiments of holding devices 10 described so far, housing areas 42 can be clamped between the holding elements 30, 32. In other words, it is possible to clip the holding device 10 with the holding part 12 onto the grip area 44 of the hard surface cleaning device 18. Depending on the constructive design of the holding elements 30, 32, these can in principle already be sufficient to keep the hard surface cleaning device 18 safe.

However, in order to prevent unintentional release of the hard surface cleaning device 18 from the holding device 10 as safely as possible, the first Binding device 16 in one embodiment, one or more retaining elements 84th

By means of the retaining element 84, the housing region 42 accommodated between the retaining elements 30, 32 can be secured in the retaining receptacles 80, 82, specifically in a first retaining position, which is shown schematically in FIG. 2 in the exemplary embodiment of the retaining device 10 shown in FIGS , The retaining element 84 closes the holding receivers 30, 32 on one side and, with respect to the first longitudinal axis 36, axially offset relative to the holding elements 30, 32.

The retaining element 84 is in one embodiment, with respect to the longitudinal axis 36 axially offset between the two pairs 38, 40 of the Halteele- elements 30, 32 arranged or formed.

In one embodiment, the retention member 84 is in the form of a tether 86 or strap.

The retaining element 84 is formed in one embodiment of an elastic and / or flexible material. In particular, it may be formed of rubber.

The retaining element 84 is molded in one embodiment in one piece with an insert 88 made of a thermoplastic elastomer. The insert 88 has two substantially facing away from each other, lateral coupling projections 90 which engage in corresponding coupling receptacles 92 on the holding part 12 when the holding device 10 is mounted.

In one exemplary embodiment, the contact surfaces 78 are formed on the insert 88 and point in the direction of the first longitudinal axis 36.

The retaining element 84 has, in one embodiment, a free end 94, which extends with a parallel to the first longitudinal axis 36 Longitudinal opening 96 is provided. In this, a hinge pin 98 is used, which defines a pivot axis 100 and the storage of a first closure element 102 is used.

On the holding part 12 second closure elements 104 and 106 are formed in the form of recesses or openings, can engage in the free ends 108 of the first closure element 102. For connecting the holding device 10 with the hard surface cleaning device 18, the first closure elements 102 engage in the second closure elements 104.

In order to connect the holding device 10 with another hard surface cleaning device 110, namely with a housing region 112 thereof, which likewise defines a grip region 114, the first closure element 102 and the second closure elements 106 are brought into engagement with one another. In this position, the retaining element 84 is somewhat shortened in its free length, so that the grip region 114, which is somewhat smaller in cross section and also somewhat differently shaped, can also be securely connected to the retaining device 10 in comparison to the grip region 44.

As described, the first closure element 110 can be pivoted about the pivot axis 100 and in this way forms a tensioning element for the prestressing clamping of the grip regions 44 or 114 on the first connection device 16.

Thus, both a first cross-sectional shape and / or a first cross-sectional area of a receiving area 116 differ from a cross-sectional shape and / or a cross-sectional area of a receiving area 118, wherein the receiving area 116 is bounded by the retaining element 84 when the first closing element 102 is in the second closing element 104 engages, and the second receiving portion 118 is limited by the retaining element 84 when the first closure element 102 engages in the second closure elements 106. The closure elements 102 and 104 relate Approximately 106 are in the described restraint positions non-positively and / or positively engaged.

In a further embodiment, alternatively, further second closure elements may be provided on the holding part 12. However, it is also conceivable to provide only one closure element on the second holding part 12, in which case preferably two or more closure elements are provided on the retention element.

Closure elements may also be formed on the retaining element, for example in the form of apertures which are pulled over projections on the retaining part, similar to what is known in watches with silicone wristbands, in which one band part has apertures and at the other band part a retaining pin extending through the apertures.

In one exemplary embodiment, the holding part 12 comprises one or more protective elements 120, 122. In one exemplary embodiment, a protective element 120, 122 can be assigned to each holding element 30, 32.

The protective element 120, 122 may in one embodiment be made of a different material than the insert 88 or the retaining element 84.

The protective elements 120, 122 are spaced apart from the holding elements 30, 32 with which they are associated with respect to the first longitudinal axis 36 in the axial and radial directions. A distance of the protective element 120, 122 from the first longitudinal axis 36 in the radial direction is greater than a distance of the associated holding element 30, 32 from the first longitudinal axis 36.

The protective elements 120, 122 are bow-shaped in one embodiment. In a further embodiment, the protective elements 120, 122 have a free protective element end 124, 126. A distance of the free protective element end 124, 126 from the first longitudinal axis 36 is, in one embodiment, greater than a distance of the free ends 50, 52 of the associated holding elements 30, 32 from the first longitudinal axis 36.

In one exemplary embodiment, the holding device 10 has a hinge device 128 for the articulated connection of the holding part 12 and the extension part 14 to one another.

The hinge device 128 is formed in one embodiment for pivoting the holding part 12 and the extension part 14 relative to each other about a pivot axis 130th

In one embodiment, the pivot axis 130 extends transversely, namely in particular perpendicularly, to a plane which contains the first longitudinal axis 36 and / or the second longitudinal axis 76. This plane coincides with the mirror plane 34 in one embodiment.

The joint device 128 comprises a first joint element 132, which is arranged or formed on the holding part 12, and a second joint element 134, which is arranged or formed on the extension part 14.

The first joint member 132 and the second joint member 134 are pivotally mounted to each other about the pivot axis 130 and held relative to the pivot axis 130 in the axial direction secured to each other.

To form a pivot bearing, a pivot pin 136 defining the pivot axis 130 is arranged or formed on the second hinge element 134. The first joint element 132 comprises a pivot pin receptacle 138 which corresponds to the pivot pin 136 and into which the pivot pin 136 engages. The holding device 10 comprises in one embodiment a locking device 140 for locking the holding part 12 and the extension part 14 relative to one another in one or more locking positions.

The locking device 140 is designed such that it can be brought or transferred from one of the locking positions into a release position, in which the retaining part 12 and the extension part are freely pivotable about the pivot axis 130 relative to one another.

The locking device 140 defines in one embodiment a plurality of locking positions for locking the holding part 12 and the extension part 14 in different pivoting positions relative to each other. In the different pivot positions, the longitudinal axes 36 and 76 include different pivot angles between them.

The function of the locking device 140 is realized in one exemplary embodiment of the holding device 10 with a locking element 142 movably arranged on the hinge device 128. This is from a locking position, in which the locking device occupies one of the locking positions, can be brought into an unlocking position in which the locking device 140 assumes the release position, and vice versa. For this purpose, in one exemplary embodiment, the locking member 142 is displaceably mounted on the joint device 128 parallel to the pivot axis 130.

The locking member 142 is formed in two parts in one embodiment and comprises two locking member parts 144 and 146th

The locking member 142 comprises a base member 148 formed on the locking member part 146, which has a cross-sectional shape deviating from a circular shape. The two locking member parts 144 and 146 are locked together with each other. On the locking member part 144, a base body 150 is formed, which is inserted into the base body 148 and held locked in this.

The main body 148 is the pivot axis 130 surrounding from a first actuating disc 152 which defines a first actuating surface 154 facing away from the second joint member 134.

The locking member part 144 comprises a second actuating disk 156, which has a second actuating surface 158 facing away from the first joint element 132.

An opening is formed on the second joint element 134 for receiving the non-circular base body 150, so that the locking element 142 is displaceable relative to the second joint element 134 only parallel to the pivot axis 130, but not rotatable about the pivot axis 130 relative to the second joint element 134 regardless of whether it assumes the locking position or the unlocking position.

In one embodiment, in the unlocked position, the locking member 142 is rotatable about the pivot axis 130 relative to the first hinge member 132, but not in the locking position.

The locking device 140 comprises a first locking toothing 160 and a corresponding second locking toothing 162, which is arranged or formed on the first joint element 132. The locking member 142 is rotatable in the unlocked position about the pivot axis 130 relative to the first joint element 132.

The first locking toothing 160 and the second locking toothing 162 each have a plurality of locking teeth 164, 166, which are arranged or designed pointing in a direction parallel to the pivot axis 130. The first locking toothing 160 and the second locking toothing 162 engage in one another in the locking position, ie are in engagement. In the release position of the locking device 140, the locking teeth 160 and 162 are disengaged.

A stroke of the locking member 142 parallel to the pivot axis 130 is at least about as large that in the unlocked position the locking teeth 160 and 162 are completely disengaged. With its locking toothing 160, the locking member 142 is displaceable in particular in the direction of the second joint element 134 such that the locking toothings 160 and 162, which are arranged or formed surrounding the pivot axis 130, can be brought into engagement with one another.

The locking device 140 is formed bistable in one embodiment. This means that the locking member 142 remains in the respective position in the locking position as well as in the unlocked position without an actuating force acting on the locking member 142. A restoring device for automatically transferring the locking member 142, for example, from the unlocked position into the locking position is not provided.

In order to avoid the risk of unintentional unlocking of the locking device 140, the holding device 10 in one embodiment comprises a latching device 168 for holding the locking member 142 both in the locking position and in the unlocked position.

In one exemplary embodiment, the latching device 168 comprises two latching elements 170 projecting from the second actuating disk 156 in the direction of the first hinge element 132, each having a latching lug 172 which protrudes in the radial direction from the pivot axis 130 and cooperates with a corresponding latching projection on the second hinge element 134 , For locking, an actuating force is applied to the locking member 142 on the first actuating surface 154. The locking member 142 can thereby be moved so far in the direction of the second joint member 134 until the locking teeth 160 and 162 interlock. During this displacement, the latching elements 170 are deflected in the direction of the pivot axis 130 out of their basic position and engage behind the latching lug on the other side.

To transfer the locking device 140 from the locking position to the release position, an actuating force must be introduced to the second actuating surface 158 in order to push the locking element 142 back into the unlocking position. The second actuating disk 146 is thereby moved in the direction of the first joint element 132, namely until the locking teeth 160 and 162 are completely disengaged.

During this displacement movement of the locking member 142, the locking elements 170 slide on the locking projections again and are deflected in the direction of the pivot axis 130. If the locking member 142 again assumes the unlocking position, the latching lug 172 can engage behind the corresponding latching projection again, so that the respective latching element 170 can spring back outwardly away from the pivoting axis 130 in the radial direction.

The described holding device 10 is in particular designed for detachable coupling with two or more differently shaped hard surface cleaning devices 18, 110.

The first hard surface cleaning device 18 and / or the second hard surface cleaning device 110 are formed in one embodiment in the form of portable, network-independent hard surface cleaning devices 18, 110. They are battery operated, preferably with a rechargeable battery. In order in particular to clean hard surfaces, for example window panes, which a user can not reach when he grasps the respective hard surface cleaning device 18, 110 with his hand on the respective grip area 44 or 114, he can optionally mount the holding device 110 with one of the two hard surface cleaning devices 18, 110 connect in the manner described, namely, the first connection means 16 is connected to only one of the handle portions 44 and 114, respectively.

The grip regions 44 and 114 differ both in their cross-sectional shape and in their cross-sectional size. The adaptable first connection device 16 nevertheless allows a secure and in particular tilt-stable connection of the holding device 10 with both hard surface cleaning devices 18 and 110.

In order to be able to process the window pane, which can not be reached as described, with one of the two hard surface cleaning devices 18 or 110, the second connecting device 20 of the extension part 14 is coupled to an extension element 22, for example. The user then grasps the extension element 22 and in this way guides the hard surface cleaning device 18 or 110 held on the holding device 10.

In one exemplary embodiment, a cleaning set comprises, in particular, the hard surface cleaning device 18 or the hard surface cleaning device 110 and a holding device 10. Optionally, the cleaning set may further comprise an extension element 22 which can be coupled to the holding device, for example in the form of an extension rod 24 or an extension tube 26.

In one embodiment of a cleaning set, the extension element 22 may be designed to be telescopic. The cleaning set can furthermore also comprise a second hard surface cleaning device 18 or 110, which differs in its function or housing shape from the other hard surface cleaning device 18, 110.

The hard surface cleaning device 18 and the hard surface cleaning device 110 may be designed in particular in the form of window cleaning devices 174 or 176.

The window cleaning device 174 is designed in the form of a window vacuum 178 in one embodiment.

The hard surface cleaning device 110 is formed in one embodiment in the form of a window humidifier 180, which defines a particular flat moistening surface 182, which is preferably flat to be applied to the surface to be cleaned.

The hard surface cleaning device 110 in one embodiment forms a liquid application device 184 for applying and / or wetting a hard surface, for example a window pane, with a cleaning liquid.

The window vacuum 118 comprises a suction nozzle 186 with a rectilinear discharge lip 188.

To aspirate liquid from a hard surface, the stripping lip 188 is brought into line contact with the hard surface and pulled across the hard surface while maintaining the line contact. A suction device of the window sizer 178 draws the liquid through a liquid inlet at the suction nozzle 186 and stores it in a dirty water tank.

Maintaining the line contact is essential for the use of the window vacuum 178. If the window suction device 178 is held on the holding device 10, the joint device 128 is preferably used to aspirate the hard surface. locked, by the locking member 142 is transferred in the manner described in the locked position.

If, however, the holding device 10 is connected to the window moistening device 180, the articulation device 128 is preferably unlocked in the manner described above. This allows the window moistening device 180 to apply flatly to the surface to be cleaned, essentially independently of how a user guides the holding device 10 directly or via the extension element 22.

The described holding device 10 can thus be universally connected to two or more different adhesive cleaning devices in order to connect them, for example, with an extension element 22 or with an adapter of a machine.

In one exemplary embodiment, the first connection device 16 is designed to be connected exclusively to grip regions 44 and 114, respectively, of hard surface cleaning devices 18, 110.

LIST OF REFERENCE NUMBERS

holder

holding part

extension part

first connection device first hard surface cleaning device second connection device

extension element

extension rod

extension tube

connector

retaining elements

mirror plane

longitudinal axis

Pair

housing area

grip area

clamping arm

free end

insertion

sliding surface

bottleneck

angle

clamping surface

clamping surface connecting element

connection Low

second longitudinal axis

contact surface

first stop recording

second stop recording

Retaining element

tether

commitment

coupling projection

Kupplungsaufnahme

free end

Longitudinal perforation

pintle

swivel axis

first closure element second closure element second closure element free end

second hard surface cleaning device

housing area

grip area

reception area

protection element

Protection element end

joint device

swivel axis

first joint element

second joint element

pivot pin Joint pin receiver

locking device

locking member

Arretiergliedteil

body

first actuating disk first actuating surface second actuating disk second actuating surface first locking toothing second locking toothing

locking tooth

locking device

locking elements

locking lug

Window cleaner

window sucker

Fensterbefeuchtungsgerät

dampening

Flüssigkeitsauftragungsgerät

suction nozzle

squeegee

Claims

claims

1. holding device (10) for a portable hard surface cleaning device (18, 110), in particular in the form of a window cleaning device, which holding device (10) comprises a holding part (12) and an extension part (14), which holding part (12) comprises a first connecting device (16) for connecting the holding device (10) to a hard surface cleaning device (18, 110), and which extension part (14) has a second connecting device (20) for connecting the holding device (10) to an extension element (22), in particular Form of an extension rod (24) or an extension tube (26), characterized in that the first connecting means (16) at least two holding elements (30, 32) for at least partially encompassing and non-positive coupling with a Gehäusebereich (42 , 112), namely a grip region (44, 114) of the hard surface cleaning device (18, 110).

2. Holding device according to claim 1, characterized in that at least one or two holding elements (30, 32) of the at least two holding teelemente (30, 32) or that all holding elements (30, 32) in the form of an elastic or substantially elastically resilient clamping arm (46, 48) are formed.

3. Holding device according to claim 2, characterized in that the clamping arm (46, 48) made of an elastically deformable material, in particular of a plastic, is formed.

4. Holding device according to one of the preceding claims, characterized in that the at least two holding elements (30, 32) in pairs, in particular in pairs mirror-symmetrical to each other, are arranged or formed.

5. Holding device according to one of the preceding claims, characterized in that free ends (50, 52) of paired holding elements (30, 32) facing away from each other are formed and that the free ends (50, 52) between them an insertion (54 .

56) with sliding surfaces (58, 60) pointing toward one another or substantially toward one another for the housing region (42, 112) of the hard surface cleaning device (18, 110).

6. Holding device according to claim 5, characterized in that the paired holding elements (30, 32) spaced from each other are arranged or formed and between them define a narrow (62, 64) or constriction, which bottleneck (62, 64 ) or constriction in particular adjacent to the insertion region (54, 56).

7. Holding device according to claim 6, characterized in that the first connecting device (16) defines a first longitudinal axis (36) and that the constriction (62, 64) or constriction forms an angle (66) relative to the first longitudinal axis (36). defined in the circumferential direction, which has a value in a range of about 10 ° to about 120 °, in particular a value in a range of about 40 ° to about 90 °.

8. Holding device according to one of the preceding claims, characterized by two, four or six holding elements (30, 32).

9. Holding device according to one of the preceding claims, characterized in that the first connecting means (16) defines a first longitudinal axis (36) and that the at least two holding elements (30, 32) the first longitudinal axis (36) arranged at least partially surrounding or are formed.

10. Holding device according to claim 9, characterized by two pairs of two holding elements (30,32), which two pairs (38, 40) relative to the first longitudinal axis (36) arranged axially offset or formed.

11. Holding device according to claim 10, characterized in that the two pairs (38, 34) of each two holding elements (30, 32) in shape and size are formed distinguishable from each other.

12. Holding device according to one of claims 9 to 11, characterized in that the first connecting means (16) at least a first bearing surface (78) for application to a housing portion (42) of the hard surface cleaning device (18) and that the at least two holding elements (30, 32) relative to the first longitudinal axis (36) arranged in the circumferential direction laterally on the at least one contact surface (78) or formed or laterally adjacent to this.

13. Holding device according to one of the preceding claims, characterized in that the at least two holding elements (30, 32) define at least one holding receptacle (80, 82) for the housing region (42) and that the holding receptacle (80, 82) relative to the first longitudinal axis (36) defines a cross-sectional shape which deviates from a circular shape.

14. Holding device according to one of claims 10 to 13, characterized in that the two pairs (38, 40) of each two holding elements (30, 32) define a first holding receptacle (80) and a second holding receptacle (82) differ in shape and / or size.

15. Holding device according to one of the preceding claims, characterized in that the first connecting device (16) comprises at least one retaining element (84), which in at least one back holding position between the at least two holding elements (30,

32) of the hard surface cleaning device (18, 110) secured in the holding receptacle (80, 82) and releases the holding receptacle (30, 32) in an insertion position.

16. Holding device according to claim 15, characterized in that the at least one retaining element (84) accommodates the housing region (42) of the hard surface cleaning device (18) between the at least two retaining elements (30, 32) in a first retaining position and in at least one second retaining position , 110) secures in the at least one retaining receptacle (30, 32) and that a first cross-sectional shape and / or a first cross-sectional area of a receiving region defined or bounded by the at least one retaining element (84) in the first retaining position , differs from a second cross-sectional shape and / or a second cross-sectional area of the receiving region, which is defined or delimited by the at least one retaining element in the second retaining position.

17. Holding device according to claim 15 or 16, characterized in that the at least one retaining element (84) has a free end (94) that at the free end (94) a first closure element (102) is arranged or formed on the holding part (12) at least one second closure element (104, 106) is formed, and in that the first closure element (102) and the at least one second closure element (104, 106) are formed correspondingly and / or in the at least one retention position or positively engage.

18. Holding device according to claim 17, characterized in that at least two second closure elements (104, 106) are formed on the holding part (12) and that the first closure element (102) in the first restraint position is connected to one of the at least two second closure elements. End elements (104) is non-positively and / or positively engaged and in that the first closure element (102) in the second retaining position with another of the at least two second closure elements (106) non-positively and / or positively engages.

19. Holding device according to one of claims 15 to 18, characterized in that the at least one retaining element (84) with respect to the longitudinal axis (36) axially offset between the two pairs (38, 40) of two holding elements (30, 32 ) is arranged or formed.

20. Holding device according to one of claims 15 to 19, characterized in that the at least one retaining element (84) in the form of a retaining band (86) or a belt is formed.

21. Holding device according to one of claims 15 to 20, characterized in that the at least one retaining element (84) is formed of an elastic and / or flexible material, in particular of rubber.

22. Holding device according to one of the preceding claims, characterized in that on the holding part (12) at least one protective element (120, 122) is arranged or formed, which is associated with one of the at least two holding elements (30, 32).

23. Holding device according to claim 22, characterized in that the at least one protective element (120, 122) of the holding element (30, 32) to which it is associated, relative to the first longitudinal axis (36) spaced in the axial and / or radial direction and that a distance of the protective element (120, 122) from the first longitudinal axis (36) in the radial direction is greater than a distance of the associated holding element (30, 32) from the first longitudinal axis (36).

24. Holding device according to claim 22 or 23, characterized in that the at least one protective element (120, 122) is formed bow-shaped.

25. Holding device according to one of claims 22 to 24, characterized in that the at least one protective element (120, 122) has a free protective element end (124, 126) and that a distance of the free protective element end (124, 126) from the first Longitudinal axis (36) is greater than a distance of the free end (50, 52) of the associated holding teelement (30, 32).

26. Holding device according to one of the preceding claims, characterized in that the at least two holding elements (30, 32) on the first longitudinal axis (36) or substantially on the first longitudinal axis (36) facing clamping surfaces (68, 70) and that the clamping surfaces (68, 70) have a shape which deviates from a cutout of a hollow-cylindrical surface concentric with the first longitudinal axis (36), in particular in the axial direction with respect to the first longitudinal axis (36).

27. Holding device according to claim 26, characterized in that the clamping surfaces (68, 70) are convexly curved in at least one spatial direction in the direction of the longitudinal axis (36).

28. Holding device according to one of the preceding claims, characterized in that the second connecting device (20) comprises a connecting element (72) for connection to a free end of the extension element (22).

29. Holding device according to claim 28, characterized in that the connecting element (72) in the form of a connection receptacle (74) for receiving the free end of the extension element (22) is ausgebil det.

30. Holding device according to claim 28 or 29, characterized in that the second connecting device (20) defines a second longitudinal axis (76) and that the connecting element (72) with respect to the second longitudinal axis (76) defines a cross-sectional shape which of a ner Diverge from circular shape.

31. Holding device according to one of the preceding claims or according to the preamble of claim 1, characterized in that the holding device (10) comprises a hinge device (128) for articulated connecting the holding part (12) and the extension part (14).

32. Holding device according to claim 31, characterized in that the hinge device (128) is designed for pivoting the holding part (12) and the extension part (14) about a pivot axis (130).

33. Holding device according to claim 32, characterized in that the first connecting device (16) defines a first longitudinal axis (36), that the second connecting device (20) defines a second longitudinal axis (76) and that the pivot axis (130) transversely, in particular vertically , to a plane (34) which contains the first longitudinal axis (36) and / or the second longitudinal axis (76).

34. Holding device according to one of claims 31 to 33, characterized in that the hinge device (128) has a first hinge element (132), which is arranged or formed on the holding part (12), and a second hinge element (134) which on Extension part (14) is arranged or formed, and that the first Gelenkele- element (134) and the second joint element (132) about the pivot axis (130) are pivotally mounted to each other.

35. Holding device according to one of claims 32 to 34, characterized in that the first or the second joint element (134) comprises a pivot axis (130) defining the pivot pin (136) and that the other joint element (132) to the pivot pin ( 136) corresponding pivot pin receptacle (138) into which engages the pivot pin (136).

36. Holding device according to one of claims 32 to 35, characterized in that the holding part (12) and the extension part (14), in particular the first hinge element (132) and the second hinge element (134), based on the pivot axis (130) are secured together in the axial direction.

37. Holding device according to one of the preceding claims or according to the preamble of claim 1, characterized by a locking device (140) for locking the holding part (12) and the extension part (14) relative to each other in at least one locking position.

38. Holding device according to claim 37, characterized in that the locking device (140) of the at least one locking position in a release position, in which the holding part (12) and the extension part (14) relative to each other freely about the pivot axis (130) pivotable are, can be brought and vice versa.

39. Holding device according to claim 37 or 38, characterized in that the locking device (140) defines a plurality of locking positions for locking the holding part (12) and the extension part (14) in different pivoting positions relative to each other.

40. Holding device according to one of claims 37 to 39, characterized in that the locking device (140) is attached to the hinge in a direction in which the locking device (140) assumes the at least one locking position, can be brought into an unlocking position, in which the locking device (140) engages the locking device (140) Release position, and vice versa.

41. Holding device according to claim 40, characterized in that the locking member (142) on the hinge device (128) parallel to the pivot axis (130) is slidably mounted.

42. Holding device according to claim 40 or 41, characterized in that the locking member (142) irrespective of whether it occupies the locking position or the unlocking position, is held non-rotatably on the first or second joint element (134) that in the Locking position relative to the other joint member (132) about the pivot axis (130) is rotatable and that in the locking position relative to the first and second hinge element (132, 134) is rotatable.

43. Holding device according to one of claims 40 to 42, characterized in that the locking device (140) is designed bistable and the locking member (142) both in the locking position and in the unlocking without a on the locking member (142) wir- kende actuating force holds.

44. Holding device according to one of claims 40 to 43, characterized in that the locking member (142) has a first actuating surface (154) for introducing an actuating force for transferring the locking member (142) from the unlocked position to the locking position and a second actuating surface ( 156) for introducing an actuating force for transferring the locking member (142) from the locking position to the unlocked position and that the first actuating surface (154) and the second actuating surface (156) in opposite or are oriented essentially in opposite directions.

45. Holding device according to claim 44, characterized in that the first and the second actuating surface (154, 156) transversely, in particular perpendicular, to the pivot axis (130).

46. Holding device according to one of claims 40 to 45, characterized in that the locking device (140) has a first locking toothing (160) and a corresponding second locking toothing (162) that the first locking toothing (160) on the locking member (160). 142) is arranged or formed, and in that the second arresting toothing (162) is arranged or formed on that articulation element (132) relative to which the arresting element (142) is rotatable about the pivot axis (130) in the unlocking position, and in that the first arresting toothing (160) and the second arresting toothing (162) engage in the arresting position and are disengaged in the release position.

47. Holding device according to claim 46, characterized in that the first locking toothing (160) and the second locking toothing (162) each comprise a plurality of locking teeth (164, 166) and that the plurality of locking teeth (164, 166) parallel in one direction is arranged or formed facing the pivot axis (130).

48. Holding device according to one of claims 40 to 47, characterized in that the locking member (142) is formed in two parts and two locking member parts (144, 146).

49. Holding device according to one of claims 40 to 45, characterized by a latching device (168) for holding the locking member (142) in the locking position and in the unlocked position.

50. Holding device according to one of the preceding claims or according to the preamble of claim 1, characterized in that the holding device (10) is designed for releasable coupling with at least two differently shaped hard surface cleaning devices (18, 110).

51. A set comprising a first portable hard surface cleaning device (18, 110) and a holding device (10) which can be coupled to the first hard surface cleaning device (18, 110), characterized in that the holding device (10) in the form of a holding device (10) follows a the preceding claims is formed.

52. A set according to claim 51, characterized by at least one extension element (22) which can be coupled to the holding device (10), in particular in the form of an extension rod (24) or an extension tube (26).

53. Set according to claim 52, characterized in that the at least one extension element (22) is telescopic.

54. Set according to one of claims 51 to 53, characterized in that the set comprises at least one second portable hard surface cleaning device (18, 110), which differs in its function and / or housing form of the first hard surface cleaning device (18, 110).

55. Set according to claim 54, characterized in that the first hard surface cleaning device (18) and / or the at least one second hard surface cleaning device (110) are designed to remove and absorb a liquid from a hard surface, in particular a window surface. disc.

56. Set according to claim 54 or 55, characterized in that the first hard surface cleaning device (18) and / or the at least one second Hard surface cleaning device (110) in the form of a liquid application device (184) are designed for applying and / or wetting a hard surface, in particular a window pane, with a cleaning liquid.

57. Set according to one of claims 54 to 56, characterized in that the first hard surface cleaning device (18) and / or the at least one second hard surface cleaning device (110) in the form of a window cleaning device (174, 176) are formed.

58. Set according to claim 57, characterized in that the window cleaning device (174, 176) in the form of a window suction (178) or a window moistening device (180) is formed.

59. Use of a holding device (10) according to one of claims 1 to 50 for connecting to a grip region (44, 114) of a hard surface cleaning device (18, 110).

60. Use of a holding device (10) according to any one of claims 1 to 50 for connecting exclusively with a handle portion (44, 114) of a hard surface cleaning device (18, 110).