WO2023046764A1

WO2023046764A1 - Mop holder, connection piece, kit of parts, and use thereof

Info

Publication number: WO2023046764A1
Application number: PCT/EP2022/076244
Authority: WO
Original assignee: Hydroflex Group GmbH
Priority date: 2021-09-21
Filing date: 2022-09-21
Publication date: 2023-03-30
Also published as: WO2023046764A9; DE102021124419A1

Abstract

The invention relates to a mop holder (3), in particular a flat mop holder (3), comprising an upper face (31) and an opposite lower face (33), in particular a lower face which faces or can face the inner face of a mop cover (2), comprising a connection piece (4) in the region of the upper face (31), said connection piece being designed to receive a mop handle (5) and to be connected to the mop holder (3). The connection piece (4) comprises a rotating/pivoting joint (41) which is designed to allow a mobility of the mop holder (3) relative to the mop handle (5) about a rotational axis (D) and about a pivot axis (K). The invention is characterized in that the rotating/pivoting joint (41) comprises an elastic pretensioning device (7, 7') which is designed to force the mop holder (3) into a specified starting position, in particular a central starting position, with respect to the pivot axis (K) and to the rotational axis (D).

Description

Hydroflex Group GmbH Kiesacker 19 35418 Buseck Germany

Mop holder, connector, kit-of-parts and their use

Description

The invention relates to a mop holder, a connecting piece and a kit of parts formed with the aforementioned components. According to the invention, the use of the mop holder, connecting piece or kit-of-parts for cleaning, in particular floors, walls and/or ceilings, in sterile clean rooms is provided.

Mop systems are used for cleaning floors or other surfaces in clean rooms. Working in clean rooms is associated with special hygiene requirements. This applies to the work equipment and processes that can be used in clean rooms. It is of primary importance to prevent the introduction of contamination, such as particles and/or germs, into the cleanroom, as well as any cross-contamination of clean objects by contamination from other objects.

For mop systems and other work equipment that is brought into clean rooms, it generally applies that they must be able to be decontaminated and disinfected, if necessary even sterilized, for example by autoclaving at 121 °C for up to 25 minutes or at 134 °C for up to to 6 minutes. The mop systems must also be resistant to cleaning agents, disinfectants and/or solvents. Disinfectants include, for example, diamines, isopropanol, ethanol, active chlorine, and hydrogen peroxide. Cleaning agents include, for example, alkaline cleaning agents such as sodium hydroxide and/or acidic cleaning agents. An example of a solvent is acetone.

When cleaning clean rooms, it is particularly important to make all necessary work steps as reproducible as possible. The correct use of the mop system by the cleaning staff is of great importance. Furthermore, it has been found that when working in clean rooms, the number of individual manual work steps should be kept as low as possible. In clean rooms there are only a few individual work steps This is advantageous because with every movement, particles are released into the clean room by the cleaning staff and the equipment. Such a release of particles is to be minimized as far as possible.

In conventional cleaning systems with mop systems, the cleaning staff often has to put in considerable effort for various work steps. This applies in particular to the cleaning of wall and/or ceiling surfaces, during which the cleaning staff is burdened by the weight of the mop system, and to an increased extent for cleaning staff of small stature. Experience has shown that excessive physical strain on cleaning staff quickly leads to fatigue and demotivation. A particular challenge for the cleaning staff when cleaning wall and/or ceiling surfaces is that in conventional mop systems the mop holder with the mop cover can tilt uncontrollably from the starting position provided for cleaning due to its own weight. The cleaning staff has to laboriously balance the tilted mop holder back into the starting position.

When cleaning clean rooms, the mop cover generally has to be replaced after each cleaning process, ie a large number of cleaning mop covers are often required to clean a room. The mop covers are usually changed after approx. 15-20 m ² . Manually touching the mop by cleaning staff is disadvantageous since cross-contamination can occur. In this case, contamination can be transferred from a used mop cover to a user and from a user to a fresh mop cover or other items in the clean room. This can lead to undesirable contamination of the clean room. To avoid cross-contamination when using mop systems, fresh mop covers are picked up and used mop covers are thrown off without hand contact. This also avoids the cleaning staff having to bend down when picking up and/or dropping a mop cover.

A cleaning device for clean rooms in the form of a mop system that includes a shaft section, a closure element and a holder for a mop cover is described in DE 20 2013 011946 U1, for example.

US 2019/0374085 A1 describes a mop system with a spring-back mop holder. The mop frame is equipped with a connector for attaching a long mop handle. An adjustable force applicator is provided coaxially to and surrounding the mop handle, which is set up to position the mop holder with respect to an axis on the Align mop handle. The mop holder can be pivoted about another axis relative to the mop handle. The force applicator is formed by a helical compression spring at the lower end of the mop handle, which is supported on one side on a shoulder of the mop handle and on the other side on conical, rounded edges of the mop holder. The shoulder is formed by a threaded sleeve which is adjustably held along the mop handle. The threaded sleeve can be rotated towards the mop holder in order to pretension the spiral spring, in order to restrict or prevent mobility of the mop holder relative to the mop handle about one axis. The position of the mop frame relative to the mop handle about the further axis is unaffected by the force applicator. The proposed mop system has proven to be rather disadvantageous and unergonomic for use in clean rooms, for example, in which not only floor surfaces but also wall surfaces and ceiling surfaces have to be cleaned. After the adjustment sleeve for the treatment of the wall or ceiling surfaces has been tightened to tension the spiral spring, it must be loosened again for the floor surfaces, because the restoring force is otherwise perceived as annoying by the cleaning staff and has a tiring effect. It is not immediately apparent to the cleaning staff whether the adjustment sleeve is in a loosened, tightened or in an intermediate state. In addition, the adjustment sleeve repeatedly requires a number of additional manual operations to adjust the force applicator.

An object of the present invention is now to overcome the disadvantages of the prior art and in particular to provide a device, a kit of parts and a method of use which is particularly easy, in particular with as few individual handling movements as possible, and/or under Application of the least possible effort by cleaning staff is to be used. An object of the present invention can be seen as providing a device, a kit of parts and a method of use in which all surfaces in the clean room can be treated without additional configuration work steps. A further task can be seen as enabling particularly ergonomic and simple cleaning.

This problem is solved by the subject matter of independent claim i. Accordingly, a mop holder, in particular a flat mop holder, is provided with an upper side and an underside opposite the upper side, which faces or can be turned towards an inner side of a mop cover. A mop cover may generally be provided with an outer or knit side for contacting a surface to be cleaned, and an inner side distinct from the outer or knit side. A mop cover can be equipped, for example, on the inside with opposing receiving pockets, into which the mop holder, in particular the flat mop holder, can engage.

In the area of the upper side, the mop holder comprises a connecting piece which is designed and set up to receive a mop handle and to connect it to the mop holder. In particular, the connecting piece is set up and designed to releasably connect the mop handle to the mop holder. It should be understood that for the purpose of this disclosure, “below” is to be understood as pointing towards the surface to be cleaned or away from the mop handle; and that as used in this disclosure, “up” means away from the surface to be cleaned or toward the mop handle. The connecting piece can, for example, have a receptacle which is at least partially convex or at least partially concave for receiving the mop handle. Sections of the connecting piece and the mop handle can be designed to be complementary in shape to one another. It is conceivable that the connector is fixed, i. H. cannot be separated non-destructively, is connected to the mop handle and thus continuously absorbs it.

The connector includes a swivel joint. The rotating and tilting joint is designed and set up to allow mobility of the mop holder relative to the mop handle about a rotation axis and about a tilting axis. The rotating and tilting joint can, for example, comprise a cardan joint. With the help of the rotary tilting joint, the connecting piece allows a first pivoting movement or rotary movement of the mop handle relative to the mop holder about an axis of rotation, which can correspond, for example, to the longitudinal extension of the mop holder. In addition, the connecting piece allows a second pivoting movement or movement of the mop handle relative to the mop holder about a tilting axis, for example to which the width extension of the mop holder may correspond, with the aid of a pivoting joint. The axis of rotation and the axis of tilt are preferably oriented transversely to one another, in particular orthogonally to one another.

In the mop holder according to the invention, the rotating/tilting joint comprises an elastic prestressing device which is designed and set up to urge the mop holder into a predetermined, in particular central, starting position with respect to the tilting axis and with respect to the axis of rotation. The predetermined starting position of the mop holder can be defined by a predetermined angle of rotation relative to the axis of rotation, in particular a 0° angle of rotation and/or a predetermined tilting angle relative to the tilting axis of the swivel-tilt joint, in particular a 0° tilting angle. Preferably, the elastic biasing means is designed and configured to counter the mop holder To bring gravity into the predetermined starting position. The elastic prestressing device is preferably set up to provide a balancing force which essentially corresponds to the weight of the mop holder or which is less than the weight of the mop holder. The pretensioning device counteracts uncontrolled twisting of the mop holder relative to the mop handle in any direction, in particular when cleaning wall and/or ceiling surfaces, and thus relieves the cleaning staff. In a particularly advantageous embodiment, it is ensured that the mop holder assumes a centered position in a predetermined resting and/or starting position and can be flexibly pivoted around at least one axis, in particular two axes, preferably up to 360°, without further manual configuration. It is particularly advantageous that the cleaning staff can transfer the mop holder from the starting position to a cleaning process without any further action simply by carrying out the work steps that are required anyway for cleaning.

According to one embodiment, the prestressing device comprises at least one first prestressing means, such as a torsion spring, a tension spring or a compression spring, in order to urge the mop holder into the predetermined initial position with respect to the tilting axis. In addition, the pretensioning device has at least one second pretensioning means, such as a torsion spring, a tension spring or a compression spring, in order to urge the mop holder into the predetermined initial position with respect to the axis of rotation. By using different first and second pre-tensioning means for resetting the mop holder on the one hand with respect to the tilting axis or on the other hand with regard to the axis of rotation, the respective first or second pre-tensioning means can be dimensioned with regard to its individual resetting force adapted to the geometry of the mop holder . For example, in the case of a mop holder that is longer in the longitudinal direction than in the width direction and that consequently experiences a greater torque when pivoting due to the greater longitudinal extent, the first pretensioning means can be used to compensate for the greater torque and the second pretensioning means to be used to compensate for the lower torque be sized. In particular, the respective restoring force of the first and/or second pretensioning means can be dimensioned in such a way that it is sufficient or no more than sufficient to compensate for the torque due to the dead weight of a mop holder, in particular with a preferably soaked mop cover Pivoting around the tilting axis or around the rotating axis. In this way, it can be ensured that there is always no resistance to pivoting about the tilting axis and/or about the axis of rotation that the cleaning staff perceives as disturbing when cleaning, for example on the floor that a manual adjustment of the pretensioning device by the cleaning staff would be necessary.

According to a development of the mop holder, the first pretensioning means is aligned coaxially to the tilting axis. Alternatively or additionally, the first prestressing means can emit a first prestressing force or restoring force in the circumferential direction with respect to the tilting axis. According to another development of the mop frame, which can be combined with the previous one, the second prestressing means can be aligned coaxially to the axis of rotation. Alternatively or additionally, the second prestressing means can emit a second prestressing force or restoring force in the circumferential direction with respect to the axis of rotation. In contrast to the prior art, in which a force applicator is used whose direction of force delivery is not coordinated with the circumferential direction of the pivot axis to be compensated, and which consequently requires an oversized spiral spring, in the development of the mop frame according to the invention the Dimensioning of the pretensioning means must be matched to the restoring forces that are actually required. In this way it can be ensured that the restoring force of the prestressing device is not perceived at all or at least not as disturbing by the cleaning staff when treating floor surfaces.

In particular, the elastic prestressing device can comprise at least one spring. The at least one spring of the elastic prestressing device can, for example, comprise at least one tension spring, in particular two tension springs, at least one compression spring, in particular two compression springs, and/or at least one torsion spring. In particular, the at least one spring is arranged or can be arranged around the swivel joint. Preferably, the elastic pretensioning device comprises at least two springs, which are arranged around the pivoting and tilting joint, preferably opposite one another on both sides of a tilting axis or an axis of rotation of the pivoting and tilting joint. In particular, an elastic pretensioning device can have a first spring, which is arranged on a first side of the swivel joint and has a restoring effect on the swivel joint in a first direction of rotation with a compressive, tensile or bending force. In addition, the tilt and turn joint can have a second spring opposite the first spring, which is arranged on a second side of the tilt and turn joint and has a restoring effect on the tilt and turn joint in a second direction of rotation with a compressive, tensile or bending force. The first and second directions of rotation are preferably directed in opposite directions with respect to the same axis of rotation or tilting. A spring, in particular a tension and/or compression spring, can be arranged around the respective axis, for example curved in an arc in relation to a tilting axis or in relation to an axis of rotation. A spring, in particular a torsion spring, can, for example, at least comprise a cantilever arranged transversely, preferably radially, in relation to one of the axis of tilt or rotation and elastically movable in a circumferential direction with respect to the axis.

According to a first alternative preferred embodiment, the pretensioning device comprises at least one torsion spring which can be arranged or is arranged around the swivel joint. According to another alternative preferred embodiment, the prestressing device comprises at least two lever arms, which can be arranged or are arranged on the swivel joint, and at least two tension springs, designed and set up to control the at least two lever arms. According to a further alternative preferred embodiment, the prestressing device comprises or consists of a compression spring which can be arranged or is arranged around the rotating/tilting joint. In particular, the prestressing device comprises a compression spring arranged around the swivel joint. The first alternative preferred embodiment, the other alternative preferred embodiment and the further alternative preferred embodiment can be combined with one another as desired.

According to a further development of the mop holder, the at least one compression spring and/or the at least one tension spring is/are located in a, in particular arcuate, receptacle, in particular a groove, of the rotary tilting joint. The receptacle, in particular an arcuate groove, extends preferably offset in relation to the tilting or rotation axis of the connecting piece and transversely, preferably crookedly or coaxially in the form of a ring segment. The at least one centering spring is arranged inside to save space and weight, and is therefore optimally suited for use in a clean room.

In a further development of the mop holder with a spring arranged in a receptacle, preferably a compression spring, the receptacle extends partially or completely around the axis of rotation or around the tilting axis. The mop holder also includes a driver, which can be formed, for example, as a lug or as a second groove, which is in engagement with the spring, preferably the compression spring. For example, the compression spring can be held in the receptacle and the driver can extend into the receptacle in order to engage with the compression spring. Alternatively, the compression spring can be held proportionately in immediately adjacent grooves, one of which acts as a receptacle and the other as a driver. The rotating and tilting joint has a part on the mop holder side which is fixedly connected to the mop holder and a part on the mop handle side which can be fixedly connected or is connected to the mop handle. The receptacle is stationary with respect to either the part on the mop holder side or the part on the mop handle side of the pivoting tilting joint. The driver is stationary with respect to the other part of the swivel joint, i.e. either the mop handle— side part or the mop holder side part. During pivoting, the driver performs a relative movement with respect to the receptacle, so that the pretensioning means, in particular the compression spring, is tensioned and provides a restoring force that is directed in the opposite direction to the relative movement.

In a preferred embodiment, the rotating and tilting joint also includes a snap-in connection, in particular a bayonet connection, designed and set up to connect a mop handle, in particular with one hand, to the mop holder. The latching connection, in particular the bayonet connection, is preferably set up and designed to connect the mop handle to the mop holder without having to lift the mop holder.

In one embodiment, which can be combined with the previous ones, the connecting piece is designed in the shape of a cylinder, in particular in the shape of a cylinder sleeve. The connecting piece preferably forms a cylinder receptacle for the preferably cylindrical, in particular circular or polygonal, mop handle.

According to one embodiment, the rotating and tilting joint has an activation/deactivation device. The activation/deactivation device comprises in particular a device, preferably in the form of a lever, for blocking the prestressing device, in particular the spring, preferably the compression spring. Alternatively or additionally, the activation/deactivation device can have a device in the form of a cylinder, which is designed and set up to be able to be slipped over the rotating/tilting joint from the outside, in particular at least in sections, to prevent free pivoting of the Rotating tilting joint in particular in relation to the axis of rotation and/or in relation to the tilting axis.

In a preferred embodiment, the swivel joint comprises or consists of a thermoplastic material. The thermoplastic material can preferably comprise or be a polyacetal, particularly preferably polyoxymethylene.

In one embodiment, the mop holder has a rectangular basic shape. The longitudinal extent of the flat mop holder can correspond to the respective longitudinal extent of the first and/or the second mop holding wing. The length of the mop holder can be in the range from 35 to 55 cm, in particular in the range from 45 to 50 cm, preferably around 48 cm. Additionally or alternatively, the width of the mop holder can be in the range of 8 or 10 to 20 cm, in particular in the range of 12 to 17 cm, preferably around 14.5 cm. As an alternative or in addition, the mop holder comprises two holding wings which can be pivoted relative to one another, in particular along their longitudinal edges. For cleaning, the retaining wings are held in one plane, so that a flat mop cover can be placed flat on the underside of the holder on a surface to be cleaned. A corresponding flat mop cover preferably has pockets lying opposite one another in the longitudinal direction, each for accommodating a holding wing. The mop holding wings each have a front edge and a back edge opposite the front edge, a first (right) side edge and a second (left) side edge opposite the first side edge. In combination with the preferred embodiment described above with a mop holder of rectangular basic shape, the side edges can be perpendicular to the front and rear edges. Alternatively or additionally, the side edges can be parallel to one another and/or the front edge can be parallel to the rear edge. The mop retaining wings can be foldable transversely along a pivot axis in the mop width direction or longitudinally foldable along a pivot axis in the mop longitudinal direction.

According to one embodiment, the mop holder can be implemented as a flat mop holder with a first mop holding wing and a second mop holding wing. Preferably, the mop holding wings each have a top side and a bottom side. The mop holding wings have two opposite transverse edges and two opposite longitudinal edges, with one outer longitudinal edge pointing away from the other mop holding wing. In particular, the mop holding wings can have inner longitudinal edges which point towards one another. The longitudinal edges of a mop holding wing are longer than its transverse edges. The longitudinal extent of the longitudinal edges of the mop holder is preferably greater than the transverse width of the mop holder. The transverse width of the mop head can be defined by the cumulative transverse width of the transverse edge of the first mop holding wing and the transverse edge of the second mop holding wing. At least one of the two mop support wings is movable relative to the other mop support wing. Preferably, the second mop holding wing may be pivotable relative to the first mop holding wing and a connector attached or attachable to the first mop holding wing. It can be preferred that one of the mop holding wings, in particular the second mop holding wing, can be pivoted relative to the other mop holding wing about a longitudinal axis of the flat mop holder.

In a preferred embodiment, the two mop holding wings are foldably connected to one another via their respective rear edges. The mop holding wings can be brought into a first essentially planar position A and into a second position B, in which the undersides of the wings assume a coiled position relative to one another. According to a preferred According to one embodiment, the mop holder further comprises a locking device for the mop holding wings, which comprises a locking mechanism, a snap-in mechanism, fold-out pins and/or magnets. The locking device is designed and arranged to hold the mop holding wings in the substantially planar A position.

The mop frame may include or be made of a carbon fiber reinforced plastic material. The mop holder expediently has a weight of at most 450 g, in particular at most 300 g, preferably at most 200 g or at most 150 g. In particular, the mop holder comprises at least 50%, at least at least 60%, or at least 80% or at least 95% carbon fiber reinforced plastic (CFRP), preferably at least 90% carbon fiber reinforced plastic, particularly preferably at least 95% carbon fiber reinforced plastic. The proportion of the carbon fiber reinforced plastic is determined in particular in relation to the surface of the mop holder, preferably that of the surface of the side of the mop holder which is to be directed towards the floor. It is clear that the proportion of fiber-reinforced plastic in the mop holder does not take into account any articulated connection realized for connecting the mop holder and mop handle to one another. Because the mop holder is made of carbon-fiber-reinforced plastic to save weight, a particularly effective workload reduction for the cleaning staff can be created. The mop holder can comprise a plurality of mop holder parts, in particular mop holder wings, which can be moved relative to one another. The mop retaining wings can be foldable transversely along a pivot axis in the mop width direction or longitudinally foldable along a pivot axis in the mop longitudinal direction.

Alternatively or additionally, the mop holder or components of the mop holder comprises stainless steel, plastic and/or carbon fiber reinforced plastic. The mop holder or components of the mop holder are preferably made of stainless steel, plastic and/or plastic fiber-reinforced plastic.

The invention also relates to a connecting piece for connecting a mop holder, in particular the mop holder described above, to a mop handle. The connector includes a swivel joint.

The rotating and tilting joint can, for example, comprise a cardan joint. With the help of the swivel-tilt joint, the connecting piece allows a first pivoting movement or rotary movement of the mop handle relative to the mop holder about an axis of rotation, which can correspond, for example, to the longitudinal extension of the mop holder. In addition, the connector allows for a secondary pivoting movement or movement by means of a tilt and swivel joint of the mop handle relative to the mop holder about a tilting axis, for example to the width extension of the mop holder. The axis of rotation and the axis of tilt are preferably oriented transversely to one another, in particular orthogonally to one another.

According to the invention, the connecting piece comprises an elastic prestressing device which is designed and set up to urge the connecting piece into a predetermined starting position in which the connecting piece is oriented transversely to the mop holder, preferably orthogonally, to the mop handle. The predetermined starting position of the mop holder can be defined by a predetermined angle of rotation relative to the axis of rotation, in particular a 0° angle of rotation and/or a predetermined tilt angle relative to the tilt axis of the swivel-tilt joint, in particular an 0° tilt angle. The elastic prestressing device is preferably designed and set up to bring the mop holder into the predetermined starting position against the force of gravity. The elastic pretensioning device is preferably set up to provide a balancing force which essentially corresponds to the weight of the mop holder or which is less than the weight of the mop holder. The pretensioning device counteracts tilting of the mop holder relative to the mop handle, in particular when cleaning wall and/or ceiling surfaces, and thus relieves the cleaning staff.

According to one embodiment, the prestressing device of the connecting piece comprises at least one first prestressing means, such as a torsion spring, a tension spring or a compression spring, in order to urge the connecting piece into the predetermined starting position with respect to the tilting axis. In addition, the prestressing device of the connecting piece has at least one second prestressing means, such as a torsion spring, a tension spring or a compression spring, in order to urge the connecting piece into the predetermined starting position with respect to the axis of rotation. By using different first and second prestressing means for restoring the connecting piece, on the one hand with respect to the tilting axis or, on the other hand, with respect to the axis of rotation, the respective first or second prestressing means can be adapted with regard to its individual restoring force to the geometry of the connecting piece and the mop frame carried thereby. For example, in the case of a connecting piece with a mop holder that is longer in the length direction than in the width direction and that consequently experiences a greater torque when swiveling due to the greater longitudinal extent, the first pretensioning means can be used to compensate for the greater torque and the second pretensioning means to be used to compensate be dimensioned for the lower torque. In addition, the first and/or second prestressing means can be dimensioned depending on the dead weight of the connecting piece. In particular, the respective restoring force of the first and/or second pretensioning means can be dimensioned in such a way that it is sufficient or no more than sufficient to compensate for the torque due to the dead weight of the connecting piece and the mop holder, in particular with a preferably soaked mop cover, when pivoting the tilt axis or around the rotation axis. In this way, it can be ensured that there is always no resistance force against pivoting about the tilting axis and/or about the axis of rotation that the cleaning staff perceives as disturbing when cleaning, for example on the floor, without the pretensioning device having to be manually adjusted by the cleaning staff. clearance staff would be required.

According to a development of the connecting piece, the first prestressing means is aligned coaxially with the tilting axis. Alternatively or additionally, the first prestressing means can emit a first prestressing force or restoring force in the circumferential direction with respect to the tilting axis. According to another development of the connecting piece, which can be combined with the previous one, the second prestressing means can be aligned coaxially with the axis of rotation. Alternatively or additionally, the second prestressing means can emit a second prestressing force or restoring force in the circumferential direction with respect to the axis of rotation. Accordingly, in the development of the connecting piece according to the invention, the dimensioning of the prestressing means can be matched to the restoring forces that are actually required. It can thereby be ensured that the restoring force of the prestressing device is not perceived at all or at least not as disturbing when cleaning floor surfaces are being treated by the cleaning personnel.

In particular, the elastic prestressing device can comprise at least one spring. The at least one spring of the elastic prestressing device can, for example, comprise at least one tension spring, in particular two tension springs, at least one compression spring, in particular two compression springs, and/or at least one torsion spring. In particular, the elastic prestressing device can comprise at least one spring. The at least one spring of the elastic prestressing device can, for example, comprise at least one tension spring, in particular two tension springs, at least one compression spring, in particular two compression springs, and/or at least one torsion spring. According to a first alternative preferred embodiment, the pretensioning device comprises at least one torsion spring which can be arranged or is arranged around the rotating/tilting joint. According to another alternative preferred embodiment, the prestressing device comprises at least two lever arms, which can be arranged or are arranged on the swivel joint, and at least two tension springs, designed and set up to control the at least two lever arms. According to a further alternative preferred embodiment, the pretensioning device comprises or consists of a compression spring which can be arranged or is arranged around the pivoting tilting joint. In particular, the pretensioning device comprises a compression spring arranged around the rotary tilting joint. The first alternative preferred embodiment, the other alternative preferred embodiment and the further alternative preferred embodiment can be combined with one another as desired. A spring, in particular a tension and/or compression spring, can be arranged around the respective axis, for example curved in an arc shape in relation to a tilting axis or in relation to an axis of rotation. A spring, in particular a torsion spring, can, for example, comprise at least one cantilever which is arranged transversely, preferably radially, in relation to one of the tilting or rotation axes and can be moved elastically in a circumferential direction with respect to the axis.

According to a further development of the connecting piece, the compression spring and/or the tension springs are/are located in a particularly arcuate receptacle, such as a groove, of the connecting piece. The in particular receptacle, in particular arcuate groove, preferably extends offset in relation to the tilting or rotation axis of the connecting piece and transversely, preferably crookedly or coaxially in the form of a ring section.

In a further development of the connecting piece with a spring arranged in a receptacle, preferably a compression spring, the receptacle extends partially or completely around the axis of rotation or around the tilting axis. The connecting piece also includes a driver, which can be formed, for example, as a lug or as a second groove, which is in engagement with the spring, preferably the compression spring. For example, the compression spring can be held in the receptacle and the driver can extend into the receptacle to engage the compression spring. Alternatively, the compression spring can be held in directly adjacent grooves, one of which acts as a receptacle and the other as a driver. The connecting piece has a mop holder-side part that can be firmly connected or is connected to the mop holder and a mop handle-side part that can be firmly connected or is connected to the mop handle. The receptacle is stationary with respect to either the part on the mop holder side or the part on the mop handle side of the swivel-tilt joint. The driver is stationary with respect to the other part of the swivel joint, ie either the part on the mop handle side or the part on the mop holder side. During pivoting, the driver performs a relative movement with respect to the receptacle, so that the pretensioning means, in particular the compression spring, is tensioned and provides a restoring force that is directed in the opposite direction to the relative movement. In a preferred embodiment, the connecting piece also includes a snap-in connection, in particular a bayonet connection, designed and set up to connect a mop handle, in particular with one hand, to the mop holder. The latching connection, in particular the bayonet connection, is preferably set up and designed to connect the mop handle to the mop holder without having to lift the mop holder.

In an embodiment combinable with the previous ones, the connector comprises a cylindrical body. The connecting piece preferably forms a cylindrical receptacle for the preferably cylindrical, in particular circular or polygonal, mop handle.

According to one embodiment, the connector has an activation/deactivation device. The activation/deactivation device comprises in particular a device, preferably in the form of a lever, for blocking the prestressing device, in particular the spring, preferably the compression spring. Alternatively or additionally, the activation/deactivation device can have a device in the form of a cylinder, which is designed and set up to be able to be slipped over the rotating/tilting joint from the outside, in particular at least in sections, to prevent free pivoting of the Rotating tilting joint in particular in relation to the axis of rotation and/or in relation to the tilting axis.

In a preferred embodiment, the connecting piece comprises or consists of a thermoplastic material. The thermoplastic material can preferably comprise or be a polyacetal, particularly preferably polyoxymethylene.

The invention also relates to a kit of parts comprising a mop holder, in particular a flat mop holder, as described above and/or a connecting piece as described above and a mop handle. According to a development, the kit of parts also includes a mop cover, in particular a flat mop cover.

The kit of parts may additionally include a mop handle that includes or is made of a carbon fiber reinforced plastic material. A mop handle can be formed at least in sections with or from carbon fiber reinforced plastic. It is conceivable that a mop handle has one or more carbon fiber reinforced plastic layers having. Alternatively, it can be preferred that the mop handle or parts thereof consist of carbon fiber reinforced plastic. The mop handle expediently has a weight of at most 800 g, in particular at most 600 g, preferably at most 500 g or at most 400 g. In particular, the mop handle comprises at least 50%, at least 60%, or at least 80% carbon fiber reinforced plastic, preferably at least 90%, particularly preferably at least 95% carbon fiber reinforced plastic, in particular with regard to the area of the surface of the mop handle or the length of the mop handle in its long axis direction. The mop handle, which can also be referred to as the shaft, makes up a large part of the weight of a conventional mop system. By using carbon fiber reinforced plastic instead of the usual stainless steel or thick-walled plastic versions, a significant weight reduction can be achieved. The use of a mop handle made of carbon fiber reinforced plastic allows the use of pretensioning means with only a low restoring force without sacrificing functionality with particularly ergonomic handling.

According to one embodiment, the mop holder, the connecting piece and/or the mop handle comprises a plastic material, in particular selected from a group consisting of duroplastics, preferably epoxy resins, thermoplastics and/or mixtures thereof. Thermoplastics can preferably be selected from a group consisting of polyamides (PA), polyolefins, preferably polypropylene (PP), polyetherimides (PEI), polysulfones (PSU), polyetheretherketone (PEEK), polyacetals, preferably polyoxymethylene (POM), po lyvinylidene fluoride (PVDF), polyphenylene sulfone (PPSU), polyether sulfone (PES), polyamide imide (PAI), polybenzimidazole (PBI) and/or mixtures thereof. The mop system can comprise various plastic materials. For example, a fiber-reinforced, in particular carbon-fiber-reinforced, mop holder or mop handle section can comprise a first plastic material, in particular as a matrix material. The mop system can comprise a different, second, third and/or additional plastic material. In particular, a handle of the mop system can include or consist of a second plastic material in particular. In particular, a connecting piece of the mop system can include or consist of a third plastic material in particular. In particular, a locking device of the mop system can include or consist of a fourth plastic material in particular. The plastic material of the connecting piece, the locking device and/or the handle is in particular a thermoplastic, preferably selected from a group consisting of polyamides, polyolefins, preferably polypropylene, polyetherimides, polysulfones, polyetheretherketone, polyacetals, preferably polyoxymethylene, polyvinylidene fluoride, polyphenylene sulfone, polyether sulfone, Polyamideimide, Polybenzimidazole and/or mixtures thereof. The plastic material of the connecting piece, the locking device and/or the handle can particularly preferably be POM, POM-GF (glass fiber reinforced POM), PA-GF (glass fiber reinforced PA), mineral-reinforced PP (particularly talc-reinforced), PEI , PSU or PEEK.

According to one embodiment, the mop handle comprises at least one tubular mop handle portion. A mop handle section can also be referred to as a shaft section. The mop handle section expediently has a weight of at most 400 g, in particular at most 300 g, preferably at most 200 g or at most 150 g. The tubular mop handle portion may include or consist of carbon fiber reinforced plastic. A mop handle section can be formed at least in sections with or from carbon fiber reinforced plastic. It is conceivable that a mop handle section has one or more carbon fiber reinforced plastic layers. In particular, the tubular mop handle portion has a wall thickness in the range of 0.01mm to 3mm. The tubular mop handle section preferably has a wall thickness of at most 1 mm, in particular at most 0.5 mm, preferably less than 0.3 mm. The wall thickness of the tubular mop handle section can be at least 0.05 mm or at least 0.1 mm.

The carbon fiber reinforced plastic includes or consists of a matrix material and a fiber material. The matrix material includes or consists of duroplastics and/or thermoplastics, in particular epoxy resins, polyester resins, vinyl ester resins or mixtures thereof. The fiber material includes or consists of carbon fibers, in particular carbon nanotubes. The carbon fiber reinforced plastic can have a density in the range from 1.5 to 1.6 g/cm ³ , in particular in the range from 1.53 to 1.58 g/cm ³ , preferably about 1.55 g/cm ³ . The mop handle, the mop holder, the connecting piece and/or other components of the mop system can each be manufactured, for example, by hand lamination, in particular in combination with vacuum pressing, autoclave processes, injection processes, in particular resin transfer molding or reaction injection molding, winding processes or pressing processes, in particular hot-pressing processes, wet-pressing processes or prepeg processes. In particular, the mop handle, the mop holder, the connecting piece and/or another component of the mop system which comprises or consists of carbon fiber reinforced plastic can have a wall thickness in the range from 0.01 mm to 3 mm, preferably a wall thickness of at most 1 mm , more preferably at most 0.5 mm, particularly preferably less than 0.3 mm. In particular, the carbon fiber reinforced plastic comprises at least 50% carbon fiber, preferably between 60% and 80% carbon fiber, particularly preferably about 70% carbon fiber. In addition, the fiber-reinforced plastic comprises no more than 50% matrix material, preferably between 20% and 40% matrix material, particularly preferably about 30% matrix material. The percentages can relate to % by weight. It can be preferred that the fiber-reinforced plastic has a twill weave, in particular a 2x2 twill weave, such as a 3k twill 2x2. The fiber material can preferably have a fiber diameter of no more than 0.5 mm, preferably no more than 0.3 mm, particularly preferably a fiber diameter of 0.2 mm, and/or a fiber diameter of at least 0.1 mm. The fiber-reinforced plastic material, in particular the carbon-fiber-reinforced plastic material, can in particular be formed from a prepreg material in the form of (carbon) fiber boards or a (carbon) fiber tube. The prepreg material can have unidirectional fiber layers. The prepreg material may include prepreg fabric layers. In particular, a prepreg material layer has a thickness of at least 0.03 mm, preferably at least 0.075 mm, and/or no more than 0.3 mm, preferably no more than 0.2 mm or no more than 0.15 mm. The (carbon) fiber material consists of at least one prepreg material layer, in particular at least two prepreg material layers, and/or no more than 15 prepreg material layers, preferably no more than 11 prepreg material layers, particularly preferably not more than four layers of prepreg material.

The invention also relates to the use of the mop holder described above and/or the connecting piece described above and/or the kit-of-parts described above for cleaning clean rooms, in particular sterile clean rooms.

Further features and advantages of the invention result from the following description, in which preferred embodiments of the invention are explained by way of example with the aid of schematic drawings. show:

Fig. 1 is a perspective view of a mop system with a mop holder and a

connector;

2a shows a schematic representation of a mop system, the mop holder and the connecting piece of which are in a starting position;

FIG. 2a shows a schematic representation of the mop system according to FIG. 2a with a tilted mop holder; 3a shows an embodiment of an elastic prestressing device in the initial state;

FIG. 3b shows the prestressing device according to FIG. 3a tilted in a first direction; FIG.

FIG. 3c shows the prestressing device according to FIG. 3a tilted in a second direction; FIG.

4a shows a first embodiment of a connecting piece according to the invention;

FIG. 4b shows the connecting piece according to FIG. 4a in a tilted position;

5a shows a second embodiment of a connecting piece according to the invention;

FIG. 5b shows the connection piece according to FIG. 5a in a tilted position; FIG.

6a shows a third embodiment of a connecting piece according to the invention;

FIG. 6b shows the connection piece according to FIG. 6a in a tilted position; FIG.

Figure 6c is a side view of the connector of Figure 6a;

7a shows a fourth embodiment of a connecting piece according to the invention;

FIG. 7b shows a detailed view of the connecting piece according to FIG. 7a;

Figure 7c is a side view of the connector of Figure 7a;

Figure 8 shows a connector with an activation/deactivation device;

9a shows a schematic sectional view of a swivel joint;

FIG. 9b shows a perspective view of the prestressing means of the swivel joint according to FIG. 9a, acting with respect to the axis of rotation; and

9c shows a schematic front view of the prestressing means according to FIG. 9b.

In the following description of various preferred embodiments with reference to the enclosed figures, the same or similar reference symbols are used for the same or similar components for easier legibility.

For the sake of simplicity, the mop handle 5 is described below as stationary and the mop holder 3 as movable relative to the mop handle 5 . The person skilled in the art understands that a movement of the various parts of the connecting piece 4 or the rotary Tilting joint 41 is generally accompanied by a relative movement of the mop holder 3 in relation to the mop handle 5, where either the mop holder 3 or the mop handle 5 can be stationary, or where both the mop holder 3 and the mop handle 5 can be movable.

To simplify legibility, a mop holder is shown throughout the figures as a flat mop holder and generally bears the reference number 3. A connecting piece generally bears the reference number 4. Flat mop frame 3, connecting piece 4 and optionally a mop handle 5 and/or a Mop cover 2 can belong to a kit of parts from which a mop system 1 can be formed.

FIG. 1 shows a mop system 1. A flat mop holder 3 is provided at the lower end of the mop system 1. FIG. The flat mop holder 3 is movably articulated on the mop handle 5 with a connecting piece 4 .

The mop holder 3 can have a release device for the mop cover 2, wherein the release device can comprise, for example, two mop holding wings 30, 32 that can be pivoted relative to one another, as shown in FIG. The mop holding wings 30 and 32 can, for example, be folded against one another along their rear edges 35 lying against one another. The mop holder 3 may have a flat, rectangular shape defined by opposite side edges 36, 37 and opposite front edges 34 of the two mop holder wings 30 and 32. The mop holding wings 30 and 32 together form a flat surface for wiping a flat wall, ceiling or floor surface. As shown schematically in FIGS. 2a and 2b, the inside 21 of the mop cover 2 can lie against the common underside 33 of the mop holding wings 30 and 32. Opposite the inside 21, the mop cover 2 has an outside or knit side 23 which is operatively brought into contact with a surface to be treated. The connecting piece 4 is arranged on the upper side 31 of the mop frame, which faces towards the mop handle 5 .

FIGS. 2a and 2b show schematically how the elastic prestressing device works, which can be provided as part of the flat mop holder 3 and/or the connecting piece 4. FIG. FIG. 2a shows a mop system 1 in an initial position. In the starting position, the mop holder 3 is oriented orthogonally to the longitudinal axis A of the mop handle 5 . The mop holder 3 forms a flat plane to which the longitudinal axis of the mop handle is arranged at a normal angle. The mop holder 3 can carry a mop cover 2 . In FIG. 2b, the mop holder 3 with the mop cover 2 is tilted out of the starting position about the swivel joint 41 of the connecting piece 4. The orientation of the longitudinal axis A of the mop handle 5 deviates from the surface normal N by an inclination to tilt y and/or an inclination to rotate δ. The arrow P shown in FIG. 2b symbolizes the effect of the prestressing device, which pushes the mop holder 3 back into the predetermined, central starting position according to FIG. 2a.

A first embodiment of a prestressing device 7 with a compression spring 73 is shown in FIGS. 3a to 3c. The prestressing device 7 is provided in a connecting piece 4 . The connecting piece 4 comprises a part 49 on the mop handle side and a part 40 on the mop holder side. A groove 44 and 42 is provided both in the part 49 on the mop handle and in the part 40 on the mop holder side, with the grooves 42, 44 record the compression spring 73 together. FIG. 3a shows the connecting piece 4 with the prestressing device 7 in an initial position. In the initial position, the compression spring 73 does not cause any restoring force, but can be prestressed. FIGS. 3b and 3c show the connecting piece 4 in different states in which the part 40 on the mop holder side is tilted in a first or in a second direction relative to the part 49 of the connecting piece 4 on the mop handle side. In the tilted states according to FIGS. 3b and 3c, the compression spring 73 causes a restoring force directed in the direction of the arrow P on the part 40 of the connecting piece 4 on the mop holder side or be attachable.

FIGS. 4a and 4b show an exemplary embodiment of a mop holder 3 with a connecting piece 4. A compression spring 73 is arranged in a pair of grooves that extends in an arc around the tilting axis K of the rotary tilting joint 41. On the one hand, an arcuate receiving groove 44 is formed on the part 49 on the mop handle side. On the other hand, on the mop holder-side part 40, an arcuate receiving groove 42 is formed. In the exemplary embodiment according to FIGS. 4a and 4b, the arcuate shapes of the grooves 42, 44 form a semicircle which surrounds the tilting axis K coaxially.

In the initial position of the mop system 1 shown in FIG. 4a, the grooves 42 and 44 are aligned congruently with one another. In the position of the mop holder 3 shown in FIG. The compression spring 73 is correspondingly compressed in the grooves 42, 44 as a result of the connection of the receiving grooves 42 on the mop holder side relative to the receiving groove 44 on the mop handle side. Due to the compression of the compression spring 73, this brings about a restoring force oriented in the direction of the arrow P on the mop holder 3 and the part 40 of the connecting piece rigidly connected to the mop holder 3 relative to the tilting axis K. FIGS. 5a and 5b show another embodiment of a mop holder 3 with a different connecting piece 4. An elastic prestressing device 7 is provided on the connecting piece 4, which includes two tension springs 75, 77. The tension springs 75 , 77 are arranged opposite one another with mirror symmetry with respect to the longitudinal axis A of the mop handle 5 . The tension springs 74, 77 are fixedly connected to the mop handle 5 or a part 49 of the connecting piece 4 on the mop handle side at a respective holding point 76, 78. At their end opposite to the respective holding point 76 or 78, the tension springs 74 or 77 are firmly connected to a lever arm 45 or 47, which in turn is firmly attached to the part 40 of the connecting piece on the mop holder side. The tension springs 75 and 77 cause opposing tensile forces on the part 40 on the mop holder side about the tilting axis K. In the starting position according to FIG. 5a, there is a tensile force equilibrium.

If the part 40 on the mop holder side is tilted to the right about the tilting axis K relative to the longitudinal axis A by a tilting inclination γ, for example as shown in FIG. 5b, the right tension spring 77 is relieved and the left tension spring 75 tensioned. In this case, starting from the tension springs 75, 77, a net tensile force is provided as a restoring force which, in accordance with the direction of the arrow P, pushes back the part 40 of the connecting piece 4 on the mop holder into the initial position. The restoring force is increased by the length of the levers 45 and 47, respectively. The restoring force is also reinforced by the fact that the holding points 76 and 78 of the springs 75 and 77 are arranged closer to the longitudinal axis A of the mop handle 5 and the part 49 of the connecting piece on the mop handle than the fastenings of the springs 75 and 77, respectively Part 40 on the mop holder in relation to the surface normal N with respect to the mop holder 3.

FIGS. 6a to 6c show a further embodiment of a mop holder 3 with a connecting piece 4, the elastic pretensioning device 7 of which comprises a torsion spring 71. FIG. 6a shows an initial position and FIG. 6b shows a tilted position. FIG. 6c shows a side view of the prestressing device 7. The connecting piece 4 comprises a part 49 on the mop handle side and a part 40 on the mop holder side, which can be pivoted about the tilting axis K relative to one another. The tilting axis K is surrounded by several turns of the torsion spring 71 . The legs 73 of the leg spring 71 extend transversely to the tilting axis K. A stop pin 48 extends parallel to the tilting axis K on the one hand on the part 40 on the mop holder side and on the other hand on the part 49 on the mop handle a counter-stop pin 58. The counter-stop pin 58 is rigidly connected to the mop handle-side part 49 tied. The stop pin 48 is rigidly connected to the part 40 on the mop holder side. With respect to the tilting axis K, the stop pin 48 and the counter-stop pin 58 are surrounded by the legs 72 of the leg spring 71 in the circumferential direction.

If the mop holder 3, as shown in FIG. 6b, is tilted by the angle γ relative to the mop handle 5 about the tilting axis K, the part 40 on the mop handle and the stop pin 48 attached thereto move with the mop holder 3 by the tilt angle γ . The counter-stop pin 58 remains stationary on the mop handle 5. With respect to the tilting axis K, the stop pin 48 consequently also moves by the tilting angle γ relative to the counter-stop pin 58. One of the legs 72 of the leg spring 71 is carried along by the stop pin 48. The other leg 72 of the leg spring 71 is held stationary on the counter-stop pin 58 . As a result of the legs 72 moving apart, the leg spring 71 is tensioned and acts with a restoring force in the direction of the arrow P on the part 40 on the mop holder side in order to push the mop holder 3 back into the starting position. In Figures 6a and 6b, the stop pin 48 is arranged further away from the first counter-stop pin 58, further away from the tilting axis K. Figure 6c shows a slightly modified embodiment in which the stop pin 48 is arranged closer to the tilting axis K than the counter-stop pin 58.

Figures 7a to 7c show an alternative embodiment of a connector 4 with an elastic biasing device 7, which also uses a torsion spring 71. The pretensioning device 7 shown in FIGS. 7a to 7c brings about a return with respect to the axis of rotation D. The part 49 on the mop handle side with respect to the pretensioning device 7 can pivot about the tilting axis K relative to the mop handle 5. The mop holder-side part 40 can be fixed rigidly to the mop holder 3 . In the illustrated embodiment, the connecting piece 4 has an activation/deactivation device in the form of the hollow cylinder 52. In the illustrated position of the hollow cylinder 52, the mop handle 5 can be moved about the tilting axis K relative to the part 49 on the mop handle. When the hollow cylinder 52 is shifted downwards and touches the part 49 on the mop handle side, it blocks the tilting axis K by means of a positive fit with the mop handle 5 and part 49.

The windings of the torsion spring 71 surround the axis of rotation D. With respect to the axis of rotation D, the legs 72 of the torsion spring 71 extend on both sides of a stop pin 48 and a counter-stop pin 58, which are oriented parallel to the axis of rotation D. The stop pin 48 is arranged rigidly with respect to the axis of rotation D on the part 40 on the mop holder side. With respect to the axis of rotation D, the counter-stop pin 58 is fixed rigidly to the part 49 of the connecting piece 4 on the mop handle side. The principle of action of the biasing direction 7 at the embodiment according to FIG. 7a essentially corresponds to that described above with reference to FIGS. 6a to 6c. The movement of the stop pin 48 and the counter-stop pin 58 relative to one another separates the legs 72 of the leg spring 71 from one another, so that the leg spring 71 causes a restoring force which, in the embodiment shown in Figure 7a, causes the mop holder 3 about the axis of rotation D in the direction of the starting position.

The stop pin 48 on the mop holder implements a release device 43 in a functional union. The stop pin 48 can be removed from the area of the legs 72 in a translatory manner. When the stop pin 48 of the release device 43 is removed from the area of the legs 72, the part 40 on the mop holder side can be rotated about the axis of rotation D relative to the part 49 of the connecting piece 4 on the mop handle without the spring 71 being tensioned. so that consequently no restoring force acts in the direction of the initial position. The release device 43 can be used, for example, for cleaning a floor surface, so that the cleaning personnel do not have to work against the restoring force of the pretensioning device 7 when using the mop system 1 .

The counter-stop pin 58 is accommodated in an arcuate link groove 42 on the part 40 of the connecting piece 4 on the side of the mop holder. It is conceivable that instead of the torsion spring 71 shown, a pair of compression springs are accommodated in the groove 42 on both sides of the counter-stop pin 58 in order to implement an elastic prestressing device. It should be clear that a connecting piece 4 with a swivel joint 41 can comprise a first prestressing device with respect to the tilting axis K and a second prestressing device with respect to the axis of rotation D (not shown in more detail).

FIG. 8 shows an alternative embodiment of a connecting piece 4 in which an activation/deactivation device 50 is provided with respect to the tilting axis K. FIG. The activation/deactivation device 50 has a lever 51 which can be actuated in order to set the mop handle 5 or the mop handle-side part 49 of the connector rigidly with respect to the mop holder-side part 40 in relation to the tilting axis K. A tilting movement of the mop holder 3 relative to the mop handle 5 can be blocked with the activation/deactivation device 50 .

FIG. 9a shows an exemplary embodiment of a swivel-tilt-tilt joint 41 with a first prestressing means 7, which provides a restoring effect with respect to a rotation axis D, and a second prestressing means 7', which has a restoring effect with respect to a tilting axis K causes. The rotating and tilting joint 41 shown in FIG. 9a is firmly connected to the mop holder 3 by means of screws and is arranged on the upper side 31 thereof. The rotating and tilting joint 41 can connect the mop holder 3 as a connecting piece 4 to a mop handle, which is not shown in detail.

FIGS. 9b and 9c show in detail the prestressing means 7, by which the mop holder 3 is urged into its predetermined starting position with respect to the axis of rotation D. The pretensioning means 7 comprises a leg spring 71 with two leg springs 72 at the opposite ends of leg springs 71, which extend radially with respect to the axis of rotation D. The spiral-shaped central part of the leg spring 71 extends coaxially around the axis of rotation D 3 acting restoring force is released by the torsion spring 72 in the circumferential direction with respect to the axis of rotation D.

The torsion spring 71 is held on a part 49 of the swivel joint 41 on the mop handle side by a cylinder mandrel 60 which is surrounded by the annular middle section 70 of the torsion spring 71 . An arcuate stop pin 48 cooperates with the opposite legs 72 when the leg spring 71 is in the rest position the mop holder 3 complete a rotation inclination δ with respect to the axis of rotation D.

As shown in Figure 9c, the pivoting and tilting joint 41 is designed in such a way that the mop holder 3 has a free rotational inclination ö about the rotational axis D of up to ±30°, in particular up to ±45°, relative to a normal position (0° ) can perform with respect to the longitudinal axis of the mop handle 5 without resetting. For this purpose, the counter-stop pin 58 can complete a corresponding rotation with respect to the axis of rotation D before the counter-stop pin 58 comes into engagement with one of the opposite legs 72 of the leg spring 71 . The restoring means 7 only exerts a restoring force on the mop holder 3 after the free rotation angle has been exceeded.

The second biasing means 7' acts on a second mop holder-side part 40' (which can be realized rigidly, stationary or integrally with the first mop handle-side part 49) and a second mop handle-side part 49' on which the mop handle (Not shown in detail in Figure 9a; compare Figure 1) is fastened or fastened. The second prestressing means 7' comprises two compression springs 73, 74 which are arranged in partial ring-shaped groove receptacles 42 of the part 40' on the mop holder side. The groove receptacle 42 extends in the circumferential direction coaxially with respect to the tilting axis K. With the two compression springs 73 and 74, at the respective ends of the compression springs 73 and 74 with respect to the tilting axis K, drivers 44' are in contact engagement. The drivers 44' are fixed in place on the part 49' on the mop handle side. If the mop handle (not shown in Figure 9a) is pivoted about the tilting axis K according to a tilting inclination y, the catches 44' undergo a corresponding movement about the tilting axis K. As a result of a tilting inclination y, a catch 44' migrates into a respective receptacle 42 in. The movement of the driver 44' forces a respective compression spring 73/74 against an opposite end of the receptacle 73, so that a restoring force is built up which opposes the tilting tendency y.

The features of the invention disclosed in the above description, in the claims and in the drawings can be essential both individually and in any combination for the realization of the invention in its various embodiments.

Reference sign

1 mop system

2 mop covers

3 flat mop holders

4 connector

5 mop handle

7, 7' elastic prestressing device

21 inside

23 outside

30, 32 mop holder wings

31 top

33 bottom

34 leading edge

35 back edge

36, 37 side edge

40, 40' mop holder side part

41 swivel tilt joint

43 release device

42, 44 recording

44' driver

45, 47 lever arm

46 snap connection

48 stop pin

49, 49' mop handle side portion

50 activation/deactivation device

51 levers

52 hollow cylinder

58 counter stop pin

60 thorn

70 center section

71 torsion spring

72 spring legs

75, 77 tension springs

73, 74 compression spring

76, 78 breakpoint δ inclination to roll γ inclination to tilt

A longitudinal axis

D axis of rotation

K tilting axis

N surface normal

P arrow

Claims

Claims 1. Mop holder (3), in particular a flat mop holder (3), with an upper side (31) and an opposite underside (33) which faces or can be turned towards, in particular an inside of a mop cover (2), comprising in the area of the upper side (31). Connector (4) designed and arranged to receive a mop handle (5) and to connect it to the mop holder (3), the connector (4) comprising a rotary tilting joint (41) which is designed and arranged to allow mobility of the mop holder (3) relative to the mop handle (5) about a rotation axis (D) and about a tilting axis (K), characterized in that the swivel-tilt joint (41) comprises elastic biasing means (7, 7') which are is designed and set up to urge the mop holder (3) into a predetermined, in particular central, starting position with respect to the tilting axis (K) and with respect to the axis of rotation (D).

2. Mop holder (3) according to claim 1, characterized in that the prestressing device (7, 7') comprises at least one first prestressing means, such as a torsion spring (71), a tension spring (75, 77) or a compression spring (73, 74), for urging the mop holder (3) into the predetermined starting position with respect to the tilting axis (K), and at least one second prestressing means, such as a torsion spring (71), a tension spring (75, 77) or a compression spring (73, 74), to urge the mop holder (3) into the predetermined starting position with respect to the axis of rotation (D).

3. Mop holder (3) according to claim 2, characterized in that the first pretensioning means is aligned coaxially to the tilting axis (K) and/or that the first pretensioning means emits a first pretensioning force in the circumferential direction with respect to the tilting axis (K), and/or in particular and, characterized in that the second prestressing means is aligned coaxially to the axis of rotation (D) and/or that the second prestressing means emits a second prestressing force in the circumferential direction with respect to the axis of rotation (D).

4. Mop holder (3) according to one of the preceding claims, characterized in that the pretensioning device (7, 7') i) at least one torsion spring (71) which can be arranged or is arranged around the axis of rotation or tilting (D; K) or ii) at least two lever arms (45, 47) which can be arranged or are arranged on the rotating/tilting joint (41), and at least two tension springs (75, 77), designed and set up to control the at least two lever arms (45, 47), and/or iii) a compression spring (73, 74) that can be arranged or is arranged around the axis of rotation or tilting (D; K), or consists of this, in particular two compression springs (73, 74) arranged around the axis of rotation or tilting (D; K).

5. Mop holder (3) according to one of Claims 2 to 4, characterized in that the compression spring (73, 74) is present in a, in particular arcuate, receptacle (42, 44) of the swivel joint (41).

6. Mop holder (3) according to claim 5, characterized in that the receptacle (42) extends partially or completely around the axis of rotation (D) or around the tilting axis (K), and that a driver (440) with the compression spring (73 , 74) is engaged, wherein the receptacle (42) is stationary with respect to a mop holder-side part (40, 40') or a mop handle-side part (49) of the swivel joint (41) and the driver is stationary with respect to the other , mop handle-side part (49) or the mop holder-side part (40, 40 ').

7. Mop holder (3) according to any one of the preceding claims, characterized in that the rotating and tilting joint (41) further comprises, designed and set up a snap-in connection (46), in particular a bayonet connection, a mop handle (5), in particular one-handed to connect the mop holder (3), in particular without having to lift it.

8. Mop holder (3) according to any one of the preceding claims, characterized in that the rotary tilting joint (41) has an activation / deactivation device (50), in particular comprising a device, preferably in the form of a lever (51) for blocking the Prestressing device, in particular the compression spring (73, 74) and/or a hollow cylinder (52), designed and set up so that it can be slipped over the rotating tilting joint (41) from the outside to prevent free Pivotability of the rotary tilting joint (41) about the axis of rotation (D) and/or about the tilting axis (K).

9. Mop holder (3) according to one or more of the preceding claims, characterized in that it has a rectangular basic shape and/or, in particular and, comprises two holding wings which can be pivoted relative to one another.

10. Mop holder (3) according to one or more of the preceding claims, characterized in that this has a length in the range of 35 to 55 cm, in particular in the range of 45 to 50 cm, and a width in the range of 8 to 20 cm, in particular in the range of 12 to 17 cm.

11. Mop holder (3) according to one or more of the preceding claims, characterized in that the mop holder (3) comprises or consists of a carbon fiber reinforced plastic material.

12. Connector (4) for connecting a mop holder (3), in particular the mop holder (3) according to any one of the preceding claims, with a mop handle (5) comprising a rotary tilting joint (41) which is designed and configured to a to allow mobility of the mop holder (3) relative to the mop handle (5) about a rotation axis (D) and about a tilting axis (K), characterized in that the connecting piece (4) comprises elastic biasing means (7, 7') which is designed and set up to urge the connecting piece (4) into a predetermined starting position with respect to the tilting axis (K) and with respect to the axis of rotation (D), in which the connecting piece (4) holds the mop holder (3) transversely, preferably orthogonally, to the Mop handle (5) oriented.

13. Connecting piece (4) according to claim 12, characterized in that the prestressing device comprises at least one first prestressing means, such as a torsion spring (71), a tension spring (75, 77) or a compression spring (73, 74) in order to tighten the connecting piece ( 4) urging to the predetermined home position with respect to the tilting axis (K), and at least one second biasing means, such as a Leg spring (71), a tension spring (75, 77) or a compression spring (73, 74) to

To urge connecting piece (4) with respect to the axis of rotation (D) in the predetermined starting position.

14. Connecting piece (4) according to claim 13, characterized in that the first prestressing means is aligned coaxially to the tilting axis (K) and/or that the first prestressing means emits a first prestressing force in the circumferential direction with respect to the tilting axis (K), and/or in particular and, characterized in that the second prestressing means is aligned coaxially to the axis of rotation (D) and/or that the second prestressing means emits a second prestressing force in the circumferential direction with respect to the axis of rotation (D).

15. Connecting piece (4) according to one of claims 12 to 14, characterized in that the prestressing device (7, 7') i) at least one leg spring (71) which can be arranged or is arranged around the rotation or tilting axis (D; K) or ii ) at least two lever arms (45, 47) that can be arranged or are arranged on the rotary tilting joint (41), and at least two tension springs (75, 77) that are designed and set up to control the at least two lever arms, and/or iii) a the rotary or tilting axis (D; K) includes or consists of a compression spring (73, 74) that can be arranged or is arranged, in particular a compression spring arranged around the rotary tilting joint.

16. Connecting piece (4) according to any one of claims 12 to 15, characterized in that the compression spring (73, 74) is present in a, in particular arcuate, receptacle (42) of the swivel joint (41).

17. Connecting piece (4) according to claim 16, characterized in that the receptacle (42) extends partially or completely around the axis of rotation (D) or around the tilting axis (K), and that a driver (44 ') with the compression spring (73, 74) is engaged, with the receptacle (42) being stationary with respect to a part (40, 40') on the mop holder side or a part (49) on the mop handle side of the rotary tilting joint (41) and the driver (44 ') is stationary with respect to the other part (49) on the mop handle side or the part (40, 40') on the mop holder side.

18. Connecting piece (4) according to any one of claims 12 to 17, further comprising a snap-in connection (46), in particular a bayonet connection, designed and set up to a mop handle (5), in particular one-handed, with a mop holder (3), in particular without this having to lift to connect.

19. Connector (4) according to any one of claims 12 to 18, characterized in that the pivoting joint (41) has an activation/deactivation device (50), in particular comprising a device, preferably in the form of a lever (51), for Blocking of the compression spring (73, 74) and/or a hollow cylinder (52), designed and set up so that it can be slipped over the tilt and turn joint (41) from the outside, to prevent the tilt and turn joint from freely pivoting about the axis of rotation (D ) and/or around the tilting axis (K).

20. Connector (4) according to any one of claims 12 to 19, comprising or consisting of a thermoplastic material, preferably polyacetal, particularly preferably polyoxymethylene.

21. Kit-of-parts, comprising a mop holder (3), in particular a flat mop holder (3) according to one of claims 1 to 10 and/or a connecting piece (4) according to one of claims 11 to 19 and a mop handle (5) .

22. Kit-of-parts according to claim 21, comprising a mop handle (5) comprising or consisting of a carbon fiber reinforced plastics material.

23. Kit-of-parts according to claim 21 or 22, further comprising a mop cover (2), in particular a flat mop cover.

24. Use of the mop holder (3) according to any one of claims 1 to 11 or the connector (4) according to any one of claims 12 to 20 or the kit-of-parts according to any one of claims 21 to 23 for cleaning clean rooms, in particular sterile clean rooms.