EP3922155B1 - Vacuum robot - Google Patents

Description

The invention relates to a vacuum robot. In particular, the invention relates to a vacuum robot with a housing which has a suction mouth on an underside for sucking in air and dirt particles and a suction chamber with a suction channel extending from the suction chamber for removing air and dirt particles, and a rotatable bristle roller arranged in the suction chamber for picking up Dirt particles that can be transported to the suction channel.

From the US 2020/0046183 A1 Such a vacuum robot is known. It has a cleaning roller that has grooves in the end areas for collecting dirt particles, a nozzle for bringing the dirt particles to the grooves and another collecting area around which dirt particles can wind. The cleaning roller does not have good cleaning behavior on textile floor coverings, and the transport behavior of the cleaning roller of dirt particles to the grooves and the collection area is unfavorable.

The US 2010 1313912 A1 discloses a vacuum robot with a brush roller, which has a brush body with bristles and elastic slats.

The invention therefore presents the problem of providing a vacuum robot with a brush roller, which is designed to collect elongated dirt particles in a collection area and has a favorable transport behavior of the elongated dirt particles to and/or into the collection area.

According to the invention, this problem is solved by a vacuum robot with the features of patent claim 1. Advantageous refinements and further developments of the invention result from the following subclaims.

The advantages that can be achieved with the invention, in addition to preventing or at least reducing the entanglement of elongated dirt particles in the bristles of the brush roller, are that the elongated dirt particles can be removed in a simple manner by means of manual or automated cleaning of the brush roller from wrapped elongated dirt particles. Very stiff bristles and therefore bristle tips are not necessary and a scratchy brushing noise on a surface to be cleaned such as a hard floor can be avoided, which reduces the noise level of the vacuum robot during a cleaning process. The stiffening effect is not reflected in the axial direction Bristle roller, which promotes the transport of the elongated dirt particles to and/or into the collection area.

• einen Borstwalzenkörper,
• einen Sammelbereich, welcher derart ausgebildet ist, dass sich bei Betrieb langgestreckte Schmutzpartikel an undloder in ihm ansammeln,
• mehrere Borsten, welche mit dem Borstwalzenkörper fest verbunden sind, und
• elastische Lamellen, welche mit dem Borstwalzenkörper fest verbunden sind, welche im Borstwalzenquerschnitt in Umfangrichtung bezogen auf die Walzendrehrichtung in einem vorbestimmten Abstand hinter den Borsten positioniert sind und welche eine auf die langgestreckten Schmutzpartikel einwirkende Querkraftkomponente in eine axiale Richtung des Borstwalzenkörpers aufweisen, die ausreichend ist, die langestreckten Schmutzpartikel zu undloder in den Sammelbereich zu transportieren.

The invention relates to a vacuum robot with a housing which has a suction mouth on the underside for sucking in air and dirt particles and a suction chamber with a suction channel extending from the suction chamber for removing air and dirt particles, and a rotatable bristle roller arranged in the suction chamber for picking up dirt particles , which can be transported away to the suction channel, the bristle roller having:

• a bristle roller body,
• a collection area which is designed in such a way that elongated dirt particles accumulate on and/or in it during operation,
• several bristles, which are firmly connected to the bristle roller body, and
• elastic slats, which are firmly connected to the bristled roller body, which are positioned in the bristled roller cross section in the circumferential direction in relation to the direction of rotation of the roller at a predetermined distance behind the bristles and which have a transverse force component acting on the elongated dirt particles in an axial direction of the bristled roller body, which is sufficient, to transport the elongated dirt particles to and from the collection area.

The elongated dirt particles picked up by the brush roller during the cleaning process do not get caught firmly in the bristles due to the arrangement of bristles and elastic lamellae. Rather, the elongated dirt particles on the bristle roller are transported in the axial direction of the bristle roller towards the collecting area due to the transverse force component acting on the elongated dirt particles through the slats. Manual or automated cleaning of the elongated dirt particles can then take place in this collection area. This is accompanied by the aspect that cleaning performance usually improves with stiffer bristles, which is achieved here due to the supporting effect of the adjacently arranged slats.

The elongated dirt particles are in particular fibers such as hair. The bristle roller body is cylindrical, preferably designed as a hollow cylinder, which has a roller axis that represents an axis of rotation. The transverse force component is a force component that acts transversely to the roller axis of the bristle roller body. The collecting area can be designed to be segmented, that is to say have several partial areas spaced apart from one another. Furthermore, the collection area can have a cleaning point, which allows cleaning of the elongated Allows dirt particles from the collection area. The collection area is designed in such a way that the elongated dirt particles that are collected in it during the cleaning process of the vacuum robot can wind around it. The suction chamber is designed to build up a negative pressure, which is generated during operation by means of a fan of the vacuum robot. The suction chamber is open on one underside and has an elongated opening, namely the suction mouth. The vacuum robot also has a collecting container for collecting dust and dirt particles.

The cleaning point can have a cutting wheel which is designed to perform a rolling cutting function on elongated dirt particles located in the collection area when it is rotated. As a result, the elongated dirt particles in the collection area are cut into small pieces and can then be transported away through the suction channel. The cutting wheel can, for example, be in contact with the brush roller body in such a way that it is set in rotation by rotation of the brush roller body. Alternatively or additionally, the cutting wheel can be arranged and designed in such a way that it can be actuated by a user and/or an external device.

If the collection area is designed to be free of cleaning points, i.e. free of cutting wheels, a cleaning station to which the vacuum robot docks for emptying and/or energy supply can have the cutting wheel, which is designed to release an elongated dirt particle located in the collection area during docking and/or emptying Perform rotary cutting function when it is rotated.

In a preferred embodiment, an angular distance along the circumferential direction between the bristles and outermost points of action of the slats is <45°, preferably <30°, more preferably <20°, even more preferably <10°, based on imaginary connecting lines of the outermost points of action to a roller axis bristle roller body. The imaginary connecting lines can be the bristles. Both axes preferably run through the roller axis. Alternatively, both axes preferably do not run through the roller axis. This creates an inclination of the slats towards the bristles. The outermost effective points of the slats are preferably the outer edges of the slats. The outermost effective points of the bristles are preferably the outer edges of the bristles.

The slats preferably have an effective slat diameter which is defined by the outermost effective points of the slats and which is smaller or equally preferably smaller than a bristle effective diameter of the bristles, which is defined by the outermost effective points of the bristles. This still makes it possible to pick up elongated dirt particles from a surface to be vacuumed, such as a floor, when the vacuum robot is in operation. The effective lamella diameter is preferably in the range from 34 mm to 44 mm.

The bristle effective diameter is preferably in the range from 37 mm to 47 mm. An outer diameter of the bristle roller body is preferably in the range from 13.5 to 23.5 mm.

In a preferred embodiment, a helix of the bristles and a further helix of the slats positioned behind them have a rotation about the axis of rotation of the bristle roller body, which on one or more sections is ≥90°, preferably ≥120°, more preferably ≥150°, even more preferably equal to 180 ° is. The helix of ≥90° runs on a section of the bristle roller body, which is preferably less than or equal to a distance between the ends of the bristle roller body and the cleaning point or, if no cleaning point is provided, to a plane in which one direction of the helix is reversed .

The bristle roller body preferably has an axial section in which a direction of rotation of the rotation is reversed. This axis section is preferably the collection area, regardless of whether it has a cleaning point or not.

The collecting area is preferably formed equidistant from the ends of the bristle roller body. Alternatively, the collecting area is preferably arranged at a distance from one of the two ends of the brush roller body, which is different from a further distance at which the collecting area is arranged from the other end of the brush roller body. The collecting area can also be formed at one or both of the two ends of the bristle roller body. In this way, elongated dirt particles that affect the lateral bearing points of the bristle roller body can be collected and, if necessary, cleaned off. Preferably, the bristle roller body outer diameter of the bristle roller body varies at the corresponding end at which the collecting region is formed. By increasing the outer diameter of the brush roller body at the end of the brush roller body where the collecting area is located, it can be ensured, for example, that the elongated dirt particles do not migrate further into the lateral bearing points.

The collection area can be designed to be segmented. This means that it can have several separate areas. For example, a partial area can be formed equidistant from both ends of the brush roller body and further partial areas can be formed at one or both ends of the brush roller body, whereby three different collecting area partial areas are formed.

A lateral surface of the bristle roller body in the collecting area is preferably made of a glass fiber-free plastic. For example, it is a two-component injection molded component made of a material such as PP (polypropylene), PC (polycarbonate), POM (polyoxymethylene or polyacetal), PVC (polyvinyl chloride), PE (polyethylene) and/or ABS (acrylonitrile-butadiene-styrene copolymer). In a preferred embodiment, the bristle roller body can be made of a glass fiber-free plastic.

In a preferred embodiment, the collection point is designed to be free of bristles and slats. This enables good manual or automatic cleaning. The collecting area is preferably formed by a region of the bristle roller body to which no lamellae or bristles are attached and which is arranged axially adjacent to a further region of the brush roller body which has lamellae and bristles.

Furthermore, a body is preferably arranged in the suction mouth adjacent to the brush roller and designed to cause the elongated dirt particles to be tightened in the collecting area around a jacket of the brush roller body. As a result, a position of the elongated dirt particles is maintained in a more defined manner in the collection area. The body can, for example, be designed as an elastomer part, for example in the suction mouth. The body can also be designed as a correspondingly predetermined shape of a plastic envelope surface delimiting the suction mouth with a contour that almost fills the collecting area. Furthermore, the body can be designed as an inner surface of the housing in the area of the suction mouth, which includes the bristle roller, with a structure which rubs against tips of the bristles during operation. For example, the structure can be designed as a non-smooth inner surface. Furthermore, the body can be formed as an inner surface of the housing in the area of the suction mouth, which includes the bristle roller, with a material which rubs against the tips of the bristles. The material can be, for example, a fabric, a rubber lamella, finer bristle elements than the bristles and/or a thread lifter.

Each lamella is preferably part of a 2-component injection molded part with a hard component and an elastic component representing the lamella, the hard component being firmly mounted on the brush roller body and the elastic component as a lamella in the brush roller cross section based on the direction of rotation of the brush roller during operation of the vacuum robot positioned behind the bristles. The 2-component injection molded part is preferably mounted on the brush roller body using screws. A height of the slat is preferably greater than or equal to a height of the hard component firmly connected to the slat. The hard component is located, based on a direction of rotation of the brush roller during operation of the vacuum robot, preferably on a rear side of the respective slat connected to it. A diameter of the collecting area is preferably smaller than the effective diameter of the lamellae and smaller than a diameter of the hard components. The diameter of the collecting area preferably corresponds to the outer diameter of the bristle roller body.

• Bereitstellen eines Borstwalzenkörpers,
• Beborsten des Borstwalzenkörpers, so dass Borsten mit dem Borstwalzenkörper fest verbunden sind, und
• Anordnen mehrerer 2-Komponenten-Spritzgussteile mit einer Hartkomponente und einer elastischen Komponente, so dass die Hartkomponenten an den Borstwalzenkörper festmontiert werden und die elastischen Komponenten als Lamellen im Borstwalzenquerschnitt bezogen auf die Drehrichtung hinter den Borsten positioniert werden.

The invention further relates to a method for producing a bristle roller, comprising the following steps

• Providing a bristle roller body,
• Bristling the brush roller body, so that bristles are firmly connected to the brush roller body, and
• Arranging several 2-component injection molded parts with a hard component and an elastic component, so that the hard components are firmly mounted on the brush roller body and the elastic components are positioned as lamellas in the brush roller cross section relative to the direction of rotation behind the bristles.

By means of the method, a relatively small distance in the cylinder cross section from the bristles to the slats can be achieved and the hard components directly adjacent to them and connected to the slats can be achieved. The process can also be used to create a bristle roller that has slats in a 180° helix.

Each 2-component injection molded part contains a hard component, which is intended for fixed mounting on the bristle roller body and on which an elastic component is provided. The elastic component, preferably TPE (thermoplastic elastomer) or TPU (thermoplastic polyurethane), is preferably injected directly onto the hard component, which creates a chemical connection between the two components. Each 2-component injection molded part can be positioned directly against the bristles. For example, the hard component has a hardness of Shore A50 - Shore A80 and/or a thickness in the range of 0.4mm to 1.5mm.

The 2-component injection molded part is preferably mounted on the brush roller body using screws. The 2-component injection molded part is preferably designed such that a height of each lamella is greater than or equal to a height of the hard component firmly connected to the lamella. Preferably, the height of each slat is at least twice greater than the height of the hard component firmly connected to the slat. The hard component is preferably arranged on the rear side of the respective slat connected to it, based on a direction of rotation of the brush roller during operation of the vacuum robot.

• Bereitstellen eines Borstwalzenkörpers,
• vollständiges Umspritzen des Borstwalzenkörpers mit einer elastischen Komponente unter Ausbildung von Lamellen, und
• Beborsten des Borstwalzenkörpers, so dass Borsten mit dem Borstwalzenkörper fest verbunden sind, und die Lamellen im Borstwalzenquerschnitt bezogen auf die Drehrichtung der Borstwalze hinter den Borsten positioniert sind.

The invention further relates to a method for producing a bristle roller, comprising the following steps

• Providing a bristle roller body,
• complete encapsulation of the bristle roller body with an elastic component to form lamellae, and
• Bristling the bristling roller body, so that bristles are firmly connected to the bristling roller body, and the slats in the bristling roller cross section are positioned behind the bristles in relation to the direction of rotation of the bristling roller.

Using this method, a relatively small distance from the bristles to the lamellae can be achieved in the cylinder cross section. The slats are integrated into the elastic component. Due to the elasticity of the slats, subsequent bristling near the slats is possible. The slats are fundamentally flexible and can also contain geometric features that promote deflection of the slat due to its deformation during the injection process of the bristles, for example using a cone-shaped tool. This means that bristles can be placed as close as possible to the slats. The bristle roller body is preferably provided as a 2-component bristle roller body.

Fig. 1

eine Draufsicht auf einen Saugroboter;

Fig. 2

eine Querschnittsansicht eines Saugroboters gemäß einer ersten Ausführungsform;

Fig. 3

eine Querschnittsansicht eines Saugroboters gemäß einer zweiten Ausführungsform;

Fig. 4

eine Draufsicht auf die Borstwalze des in Fig. 1 gezeigten Saugroboters;

Fig. 5

eine Draufsicht auf eine Borstwalze eines Saugroboters;

Fig. 6

eine Draufsicht auf die in Fig. 4 gezeigte Borstwalze mit langestreckten Schmutzpartikeln auf den Borsten;

Fig. 7

eine Draufsicht auf die in Fig. 4 gezeigte Borstwalze mit langgestreckten Schmutzpartikeln in einem Sammelbereich;

Fig. 8

eine Draufsicht auf die in Fig. 4 gezeigte Borstwalze mit langgestreckten Schmutzpartikeln in einem Sammelbereich;

Fig. 9

eine Querschnittsansicht der in Fig. 8 gezeigten Borstwalze;

Fig. 10

eine weitere Querschnittsansicht der in Fig. 8 gezeigten Borstwalze;

Fig. 11

eine weitere Querschnittansicht der in Fig. 8 gezeigten Borstwalze;

Fig. 12

eine Draufsicht auf eine Borstwalze eines Saugroboters;

Fig. 13

eine Querschnittsansicht der in Fig. 12 gezeigten Borstwalze;

Fig. 14

eine weitere Querschnittsansicht der in Fig. 12 gezeigten Borstwalze;

Fig. 15

eine weitere Draufsicht auf eine Borstwalze eines Saugroboters; und

Fig. 16

eine Teil-Draufsicht auf einen Saugroboter gemäß einer sechsten Ausführungsform.

An exemplary embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows

Fig. 1

a top view of a robot vacuum cleaner;

Fig. 2

a cross-sectional view of a vacuum robot according to a first embodiment;

Fig. 3

a cross-sectional view of a vacuum robot according to a second embodiment;

Fig. 4

a top view of the brush roller of the in Fig. 1 vacuum robot shown;

Fig. 5

a top view of a brush roller of a vacuum robot;

Fig. 6

a top view of the in Fig. 4 Bristle roller shown with elongated dirt particles on the bristles;

Fig. 7

a top view of the in Fig. 4 Shown bristle roller with elongated dirt particles in a collection area;

Fig. 8

a top view of the in Fig. 4 Shown bristle roller with elongated dirt particles in a collection area;

Fig. 9

a cross-sectional view of the in Fig. 8 brush roller shown;

Fig. 10

another cross-sectional view of the in Fig. 8 brush roller shown;

Fig. 11

another cross-sectional view of the in Fig. 8 brush roller shown;

Fig. 12

a top view of a brush roller of a vacuum robot;

Fig. 13

a cross-sectional view of the in Fig. 12 brush roller shown;

Fig. 14

another cross-sectional view of the in Fig. 12 brush roller shown;

Fig. 15

another top view of a brush roller of a vacuum robot; and

Fig. 16

a partial top view of a vacuum robot according to a sixth embodiment.

Fig. 1 shows a top view of a vacuum robot with a brush roller according to the invention. The vacuum robot has a housing 11, which has a suction mouth (not shown) on an underside for sucking in air and dirt particles. The vacuum robot also has a suction chamber 15 with a suction channel 17 extending from the suction chamber 15 for transporting away air and dirt particles and a rotatable bristle roller 14 arranged in the suction chamber 15 for picking up dirt particles which can be transported away to the suction channel 17. The suction chamber 15 is designed to build up a negative pressure, which is generated during operation by means of a fan 12 of the vacuum robot. The suction chamber 15 is open on one underside and has an elongated opening, namely the suction mouth. Furthermore, the vacuum robot has a collecting container 23 for collecting the dirt particles. The bristle roller 14 has a bristle roller body 1, slats 2 arranged thereon, bristles 3 arranged thereon and a collecting area 4 which is designed to be brush-free and slat-free and is designed to collect elongated dirt particles (not shown) by moving around make him squirm. The vacuum robot is self-propelled using wheels 16.

When the vacuum robot is in operation, the blower 12 generates a suction flow which flows first through the suction mouth, then through the suction chamber 15, then through the suction channel 17 and then through the collecting container 23. The bristle roller 14 rotates to support cleaning of a surface (not shown).

Fig. 2 shows a cross-sectional view of a vacuum robot according to a first embodiment. In this first embodiment, the cutting wheel 19 is arranged in the suction chamber 15 at a distance from the bristle roller 14. The in Fig. 2 Robot vacuum shown corresponds to the one in Fig. 1 shown vacuum robot, wherein it further has a cutting wheel 19, which is accommodated in a cutting wheel housing 20 and is held by a movable holder 21. The cutting wheel 19 is arranged in the suction chamber 15 above the bristle roller 14 in such a way that it is located above the collecting area 4. The accumulation of dirt particles in the collection area 4 results in contact with the cutting wheel. Figure 2 shows the vacuum robot with a cutting wheel in an inactive state, i.e. it does not carry out a cleaning process on the bristle roller. The cutting wheel 19 is arranged at a predetermined distance from the bristle roller 14.

Fig. 3 shows a cross-sectional view of the in Fig. 2 shown vacuum robot in a second embodiment. The in Fig. 3 Robot vacuum shown corresponds to the one in Fig. 1 shown vacuum robot with the difference that it is shown in an active state, ie it leads a cleaning process on the brush roller and is in operation. When the vacuum robot is in operation, the cutting wheel 19 is moved in the direction of the brush roller 14 by means of the movement element 22, so that it is set in rotation by means of the rotation of the brush roller 14. The cutting wheel exerts a cutting force defined by a spring on the dirt particles in the collection area. The cutting wheel 19 is arranged at a further predetermined distance from the bristle roller 14, which is smaller than that in Fig. 2 is the predetermined distance shown. This allows elongated dirt particles (not shown) that are located in the collection area 4 to be cut. The elongated dirt particles, cut into smaller pieces, can be transported via the suction channel 17 into the collecting container 23 in order to be collected there together with other dirt particles.

Fig. 4 shows a top view of a bristle roller of a vacuum robot according to the invention. The bristling roller has a bristling roller body 1 and a plurality of bristles 3, which are firmly connected to the bristling roller body 1. Furthermore, the bristle roller has a collecting area 4, which is designed to be segmented, ie has partial areas. Each portion of the collecting area 4 is designed in such a way that, during operation, elongated dirt particles (not shown) can collect on and/or in it, in particular winding around it. Furthermore, the bristle roller has elastic lamellae 2, which are firmly connected to the bristles roller body 1 and which are positioned in the bristles roller cross section in the circumferential direction based on the direction of roller rotation at a predetermined distance behind the bristles 3.

The elastic slats 2 have a transverse force component acting on the elongated dirt particles in an axial direction of the brush roller body, which is sufficient to transport the elongated dirt particles into one of the partial areas of the collecting area 4. The bristle roller has - purely as an example - three sections. Two of the sub-regions are arranged at ends of the bristle roller body 1, while one of the sub-regions is arranged in the middle. The centrally arranged partial area has a center which is symbolically represented by a dash-dot line and which is equidistant from the two ends of the bristle roller body 1 at a distance a. The collecting area 4 is designed to be free of slats 2 and 3 bristles. The bristle roller is point-symmetrical.

Fig. 5 shows a top view of a bristle roller of a vacuum robot according to the invention. In the Fig. 5 The third embodiment shown corresponds to that in Fig. 4 shown embodiment with the difference that the center of the one centrally arranged portion 4 is not equidistant from the ends of the bristle roller body, but is spaced from one end by the distance a and from the other end by a further distance Distance b is spaced apart, which is smaller than the distance a. The bristle roller is designed asymmetrically.

Fig. 6 shows a top view of the in Fig. 4 Bristled roller shown with elongated dirt particles on the bristles. Long dirt particles 5 in the form of hair have wound loosely around the bristles 3 and the slats 2.

Fig. 7 shows a top view of the in Fig. 4 Shown bristle roller with elongated dirt particles in the collection area. The elongated dirt particles 5 are located in the centrally arranged sub-area of the collecting area 4. There they accumulate because they wind tightly around the sub-area.

In the Fig. 6 elongated dirt particles 5 shown have been picked up by a surface to be vacuumed during operation of the vacuum robot and are transported in an axial direction of the bristle roller body into the partial area of the collecting area 4 in the further course of the cleaning process of the vacuum robot due to the transverse force component acting on the elongated dirt particles 5 to gather in it, as in Fig. 7 is shown.

Fig. 8 shows a top view of the in Fig. 4 Shown bristle roller with elongated dirt particles in the collection area. In the Fig. 5 The top view shown corresponds to that in Fig. 7 shown top view with the difference that the elongated dirt particles 5 are located in one of the two partial areas of the collecting area 4, which is formed at the end of the bristle roller body 1.

Fig. 9 shows a cross-sectional view of the in Fig. 8 shown bristle roller along line VI-VI. The bristle roller body 1 has a lateral surface made of a glass fiber-free plastic. In an alternative embodiment, it is conceivable to design the bristle roller body as a hollow cylinder, for example made of a glass fiber-free plastic.

Fig. 10 shows another cross-sectional view of the in Fig. 8 shown bristle roller along line VII-VII. The bristle roller has the bristle roller body 1, which is rotated in the direction of the arrow when the vacuum robot is in operation. The slats 2 are arranged behind the bristles 3 in the direction of rotation. The bristles 3 have an effective bristle diameter d4, which is defined by the outermost effective points of the bristles 3. An angular distance α along the circumferential direction between the bristles 3 and an outermost effective point of the slats 2 is <45°, based on imaginary connecting lines 7 of the effective points to an axis 6 of the cylindrical bristle roller body 1.

Fig. 11 shows another cross-sectional view of the in Fig. 8 shown bristle roller along line VII-VII. Fig. 8 equals to Fig. 10 with the difference that a slat effective diameter d3 of the slats 2 is shown, which is defined by the outermost effective points of the slats 2. The effective lamella diameter d3 is smaller than the effective bristle diameter d4.

Fig. 12 shows a top view of a bristle roller of a vacuum robot according to a fourth embodiment. In the Fig. 9 The fourth embodiment shown corresponds to that in Fig. 4 shown second embodiment with the difference that the slats 2 are each connected to a hard component 9, which is attached to the bristle roller body 1 by means of screws 8.

Fig. 13 shows a cross-sectional view of the in Fig. 12 brush roller shown along line XX. The hard component 9 is firmly mounted on the bristle roller body 1 using the screws (8). An elastic component in the form of the lamella 2 is molded onto the hard component 9 and is thereby chemically bonded to it. The hard component 9 and the lamella 2 therefore form a 2-component injection molded part. Each hard component 9, together with the lamella 2, is positioned directly against the bristles 3. A height h ₁ of the slat 2 is twice as large as a height h ₂ of the hard component 9, which is located on a rear side of the slat 2 in relation to a direction of rotation (not shown) of the brush roller when the vacuum robot is in operation.

Fig. 14 shows another cross-sectional view of the in Fig. 12 brush roller shown along line XX. In the Fig. 14 The bristle roller shown corresponds to the one in Fig. 13 shown brush roller, where instead of the heights, the direction of rotation of the brush roller when the vacuum robot is in operation, a brush roller body external diameter d ₁ of the brush roller body 1 of 18.5 mm, a hard component external diameter d ₂ of the mounting element 9 of 26 mm, a lamella effective diameter d ₃ the slats 2 of 39 mm and a bristle effective diameter d ₄ of the bristles 3 of 42 mm are shown.

Fig. 15 shows a top view of a bristle roller of a vacuum robot according to an alternative embodiment. This bristle roller does not form a collection area. When the vacuum robot is cleaning, the dirt particles collect in a central area of the brush roller. This area can be cleaned manually by a user using scissors, a knife or a cleaning tool.

Fig. 16 shows a partial top view of a vacuum robot according to a further embodiment. In the Fig. 16 The bristle roller shown corresponds to the one in Fig. 4 The brush roller shown, but the vacuum robot still has a body 10 in the suction mouth adjacent to the brush roller. The body 10 is arranged and designed to tighten the elongated dirt particles 5 in the collecting area 4 in order to create a coat of the brush roller body 1.

Reference symbol list

α

Angular distance along the circumferential direction

a

Distance

b

further distance

d1

Brush roller body outside diameter

d2

Hard component outside diameter

d3

Slat effective diameter

d4

Bristle effective diameter

1

bristle roller body

2

lamella

3

bristle

4

Collection point

5

elongated dirt particle

6

roller axis

7

imaginary connecting line

8th

screw

9

Hard component

10

Body

11

Housing

12

fan

14

bristle roller

15

Suction room

16

wheel

17

suction channel

18

suction mouth

19

cutting wheel

20

Cutting wheel housing

21

bracket

22

Movement element

23

collection container

Claims (11)

1. Vacuum robot comprising a housing (11), which has, on an underside, a suction mouth (18) for sucking in air and dirt particles and a suction chamber (15) with a suction duct (17) leading off the suction chamber (15) for transporting away air and dirt particles, and a rotatable bristle roller (14) arranged in the suction chamber (15) for picking up dirt particles, which can be transported away to the suction duct (17), wherein the bristle roller (14) comprises:

   - a bristle roller body (1),

   - a collection region (4) designed in such a way that elongate dirt particles (5) collect on and/or in it during operation,

   - a plurality of bristles (3) fixedly connected to the bristle roller body (1), and

   - elastic lamellae (2), which are fixedly connected to the bristle roller body (1), are positioned at a predetermined distance behind the bristles (3) in the bristle roller cross-section in the circumferential direction in relation to the roller rotational direction and have a transverse force component which acts on the elongate dirt particles (5) in an axial direction of the bristle roller body (1) and is sufficient to transport the elongate dirt particles (5) to and/or into the collection region (4).
2. Vacuum robot according to Claim 1, characterized in that an angular distance (α) along the circumferential direction in each case between the bristles (3) and the outermost effective points of the lamellae (2) is < 45°, preferably < 30°, more preferably < 20°, even more preferably ≤ 10°, in relation to imaginary connecting lines of the effective points to an axis of the bristle roller body (1).
3. Vacuum robot according to Claims 1 or 2, characterized in that the lamellae (2) have a lamella effective diameter (d3), which is defined by outermost effective points of the lamellae (2) and which is smaller than a bristle effective diameter (d4) of the bristles (3), which is defined by outermost effective points of the bristles (3).
4. Vacuum robot according to any one of the preceding claims, characterized in that a helix of the bristles (3) and a further helix of the lamellae (2) positioned behind them have a torsion about a rotational axis of the bristle roller body (1) that is ≥ 90°, preferably ≥120°, more preferably ≥150°, even more preferably equal to 180°, in one or more partial portions.
5. Vacuum robot according to Claim 4, characterized in that the bristle roller body (1) has an axis portion in which a torsional direction of the torsion is reversed.
6. Vacuum robot according to any one of the preceding claims, characterized in that the collection region (4) is arranged at one end of the bristle roller body (1) and a bristle roller outer diameter (d1) of the bristle roller body (1) varies at that end.
7. Vacuum robot according to any one of the preceding claims, characterized in that a lateral surface of the bristle roller body (1) in the collection region (4) is formed from a glass-fiber-free plastic.
8. Vacuum robot according to any one of the preceding claims, characterized in that the collection location (4) is formed without bristles and without lamellae.
9. Vacuum robot according to any one of the preceding claims, characterized in that a body (10) is furthermore arranged adjacent to the bristle roller (14) in the suction mouth (15) and is designed to effect a tightening of the elongate dirt particles (5) in the collection region (4) around a lateral surface of the bristle roller body (1).
10. Method for producing a bristle roller (14), comprising the following steps:

    - providing a bristle roller body (1),

    - applying bristles to the bristle roller body (1) so that the bristles (3) are fixedly connected to the bristle roller body (1), and

    - arranging 2-component injection-molded parts with a hard component (9) and an elastic component so that the hard components (9) are fixedly mounted on the bristle roller body (1) and the elastic components are positioned as lamellae (2) behind the bristles (3) in the bristle roller cross-section in relation to a rotational direction during operation of the bristle roller.
11. Method for producing a bristle roller (14), comprising the following steps:

    - providing a bristle roller body (1),

    - injection-molding completely around the provided bristle roller body (1) with an elastic component to form lamellae (2), and

    - applying bristles to the bristle roller body (1) so that the bristles (3) are fixedly connected to the bristle roller body (1), and the lamellae (2) are positioned behind the bristles (3) in the bristle roller cross-section in relation to the rotational direction of the bristle roller.

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