TW201633960A - Brush roller - Google Patents

Abstract

The present invention relates to a brush roller for a nozzle, having a brush body and a plurality of bristle bundles extending outwardly from the brush body for cleaning the floor, wherein at least one bristle bundle has an indicative wire with a core wire and a wear-resistant layer; the wear-resistant layer covers at least partially the core wire (20) and is designed such that as the brush roller is used continuously, the wear-resistant layer changes color and/or intensity of color to indicate the wear and tear of the brush roller.

Description

Brush roller Field of invention

The present invention relates to a brush roller for a nozzle having a brush body and a plurality of brush bundles for outwardly extending from the brush body for cleaning the floor. Further, the present invention relates to a suction nozzle having a suction chamber opened on the bottom side, a brush roller, and a driver for the brush roller. Finally the invention relates to a method for manipulating a brush roller in a nozzle.

Background of the invention

It is well known in practice that the suction nozzle of a vacuum cleaner is called an accessory, a brush device, or simply a nozzle or a hard floor nozzle or an electric nozzle depending on the purpose of use. A vacuum cleaner having such a suction nozzle typically has a base housing in which an electrically driven suction motor for forming an intake air flow is provided. The nozzle is typically fluidly sealed to the vacuum cleaner via a flexible suction hose and/or steering tube. In the suction robot the nozzle is generally integrated into the base housing itself. Electric brushes often have a rotating brush roller through which dust and/or dust particles of the floor can be wiped off. A brush tow, bristles or the like extending from the brush body of the brush roller acts on the floor. Dust and/or dust particles wiped from the floor are entrained by the suction stream and are mostly disposed in the base housing The dust collection chamber is isolated in the dust filter bag.

In the designs known from the prior art, the reduced cleaning efficiency of the brush roller is usually only checked indirectly and thus often inaccurately. In many electric brushes, the wear of the brush bundle can only be identified by the naked eye, for example by comparing the length of the bundle of unused brush rolls with the length of the bundle of brush used. In this way, it is often impossible or inaccurate to inspect only a small amount of wear of the brush roller. The brush roller used today is characterized in that only a small change in the length of the brush tow is made after overuse, so that it is almost impossible to draw conclusions about reliable wear by visual comparison.

Summary of invention

Starting from this, it is an object of the invention to provide a brush roller in which the wear of the brush bundle can be checked by visual means in a simple and/or objective manner.

The object of the invention is achieved by an object of an independent claim. A preferred extension is set forth in the accompanying claims.

Accordingly, the present invention relates to a brush roller for a nozzle having a brush body and a plurality of brush bundles for outwardly extending from the brush body for cleaning the floor, wherein at least one of the bundles has an indicator wire, indicating The wire has a core wire and a wear layer, and the wear layer at least partially wraps the core wire and is designed such that as the brush roll is used continuously, the color strength of the color and/or its color is changed to indicate the brush roll abrasion.

The key point of the invention is therefore that the wear layer of the indicator filament changes its color and/or due to the continued use of the brush roller and the accompanying wear of the wear layer. The color intensity of its color. A change in the color intensity of the color and/or color indicates that the user of the brush roller can determine by the indication whether the brush roller can continue to be used to clean the floor, or whether the cleaning efficiency is expected to decrease after the brush roller and/or whether it is recommended Replace the brush roller for cleaning efficiency. In contrast to the designs known from the prior art, the proposed brush roller has the advantage that it is not necessary to inspect the wear indirectly by a reduction in the cleaning efficiency of the brush roller, but can be visually influenced, for example, by means of a color change of the wear layer. Check for wear. In other words, the proposed brush roller has a great advantage over the wear of the main subjective inspection brush tow in the prior art, and the change in the color strength of the wear layer and/or the color intensity of the color can be objectively and reliably The way to identify the wear of the brush roller.

Brush rolls, also known as bristle rolls, are preferably designed for cleaning and/or caring for carpet floors and/or hard floors. The brush body is preferably designed in a cylindrical shape, wherein the bundle of filaments, also referred to as tufts of bristles, preferably extends radially outward from the body of the brush. The brush tow preferably has a plurality of filaments which preferably extend parallel to each other or approximately parallel to each other. The core wire is preferably designed to clean the floor so that the indicator wire not only recognizes the continued wear of the brush roller, but also cleans the floor. The change in color intensity of the color and/or color may be, for example, from green when the brush roller is not in use to red when the brush roller has been used. The color intensity of the color and/or color can also be varied continuously by the continued use of the brush roller.

In principle, a single filament formed as a filament bundle of the indicator filament can show continued wear of the brush roller. According to a particularly preferred embodiment, it is also possible for the at least one brush to be formed as an indicator beam with only the indicator filament and at least One other brush tow does not have an indicator filament. The brush roller preferably has a plurality of brush tows, wherein a single brush tow is formed as an indicator bundle. The plurality of brush tows are preferably spaced apart from one another along the body of the brush.

The wear layer can wrap the core wire, for example, at the tip where it acts when the floor is cleaned. It is also particularly preferred according to the extension to provide a wear layer along the entire wrapping surface of the core wire. The wear layer completely or substantially completely wraps the core wire in a suitable manner. The filaments of the core wire and/or the brush tow preferably have a pin shape and/or a cylindrical shape, wherein the wear layer covers the sides of the cylindrical core wire and further preferably the wear layer does not cover the bottom surface and/or the top of the core wire surface. The wear layer can likewise enclose the core wire at least partially, preferably in the form of a sleeve. The wear layer is advantageously situated directly on the core wire. In another embodiment, the indicator bundle has a plurality of filaments that are surrounded and/or encased by a plurality of indicator filaments. The indicator filament is preferably formed by a ring that indicates the exterior of the bundle, while a plurality of filaments form an inner annular region defined by the loop. According to a preferred embodiment, the wear layer is in close contact with the core wire and the thickness of the wear layer Indicates 5%, 10% or 20% of the diameter of the wire.

According to a preferred embodiment, all of the filament bundles have substantially the same distance extending outwardly from the brush body and/or at least one indicator filament has a smaller distance extending outwardly from the brush body relative to the other filaments. Preferably, the brush tow with the indicator filament extends outwardly from the brush body a smaller distance than the remaining brush tow. When the extension distance is small, for example, 1 mm or 2 mm, the durability and/or service life of the indicator wire is improved. The extension distance of the indicator wire or the bundle of filaments with the indicator filament is preferably set such that the indicator filament or the bundle of filaments with the indicator filament does not engage the floor when the floor is cleaned. In the design side In this case, the wear layer is worn by the contact with dust and/or dust and/or the vibration of the brush roller when the floor is cleaned, and the wear layer thus changes its color or its color strength with continued use. If all of the tows have substantially the same extension distance, adjacent brush tows protect the tow with the indicator filament and thus extend the durability of the at least one indicator filament.

In order for the wear layer to change its color and/or its color strength due to the continued use of the brush roll for displaying the wear of the brush roll, in principle the core wire and/or the wear layer can be formed from any material. It has proven to be particularly advantageous if the core wire is made of polyethylene, in particular of lower density linear polyethylene, and/or the wear resistant layer is made of polyethylene terephthalate, in particular by dyed pairs. The ethylene phthalate is made and/or the abrasion resistant layer is made of a material having other colors and/or other color strengths relative to the core filament. Polyethylene gives the core wire an advantageous stability for cleaning the floor. The core wire and the wear layer preferably have the same color and/or the same color strength in the unused state of the brush roller. The core filament is further preferably made of a material that does not change its color and/or its color strength with respect to the wear layer after use of the brush roller. The wear of the brush roll is thus checked in a simple manner by the change in the colour or colour strength of the wear layer relative to the core wire.

According to a preferred embodiment, the brush body is shaped as a body that can be driven by the drive shaft of the nozzle and has at least one brush row on the outside consisting of mutually spaced brush tows, the brush row being from the end region of the brush roller Starting at least in sections, the spiral extends around the body of the brush. The body can be formed into a hollow body or a solid body. Preferably, the solid body is made of fiber reinforced plastic. Preferably, two 180° staggered hairs are disposed on the brush body. A row of brushes, in which, for example, four rows of brushes arranged in a staggered manner at 90°, respectively, can also be used. Each of the brush rows preferably extends around the brush body in a spiral or spiral shape of about 90° or 180°. The brush roller is further preferably slidable on the drive shaft of the nozzle. The brush roller is preferably formed as a solid body and is rotatably mounted in the suction chamber at its end.

The object of the invention is also achieved by a suction chamber having a bottom side opening, a previously described brush roller and a nozzle for a brush roller, wherein the brush roller is arranged in the suction chamber and is rotatable by the driver. The drive shaft of the nozzle applies force to the brush roller through the push rod of the drive shaft, and the push rod is cooperatively engaged into the corresponding socket in the brush roller. The drive is preferably formed as an electric motor that is further preferably rotated by a belt drive to the brush roller. Preferably, the direction of the brush roller in the vacuuming operation is such that the brush tow of the brush roller protrudes outwardly from the suction port through the suction port defining the suction chamber on the bottom side, so that the wire bundle is engaged when the nozzle is standing on the floor. Go to the floor to be cleaned or pass over the floor to be cleaned. The nozzle is preferably designed as an attachment for an electric vacuum cleaner for the care of the floor, wherein the vacuum cleaner can be shaped as a manual long handle vacuum cleaner or a vacuum cleaner. A suction engine is preferably provided in the base casing of the cleaner, and the suction flow can be obtained by suctioning the engine. The suction airflow preferably acts on the floor through the suction opening, so that dust and/or dust particles that can be wiped off the floor by the brush roller are carried by the suction airflow and can be in the dust collection chamber in the dust filter bag or the like. isolation.

Furthermore, the object of the invention is a method for manipulating a previously described brush roller in a previously described nozzle having the steps of: rotating a brush roller for cleaning the floor and checking the color intensity of the color and/or color Change It is used to indicate the wear of the brush roller. On the one hand, the change in color and/or color intensity is checked by visual means, and on the other hand an electronic detection component for identifying a change in color and/or a change in color intensity can also be provided. This identifies the wear of the brush roller in an objective manner, wherein the wear can be displayed, for example, on the display part of the nozzle and/or the vacuum cleaner.

1‧‧‧ nozzle

2‧‧‧ Shell

3‧‧‧Connecting parts

4‧‧‧Inhalation channel

5‧‧‧Inhalation room

6‧‧‧ Drive

7‧‧‧ drive belt

8‧‧‧Active shaft

9‧‧‧Drive belt housing

10‧‧‧ Gearbox housing

11‧‧‧Drive wheel

12‧‧‧ bottom side

13‧‧‧ pulley

14‧‧‧Brush roller

15‧‧‧ brush body

16‧‧‧brush row

17‧‧‧ brush tow

18‧‧‧ brushing

19‧‧‧Indicator

20‧‧‧core wire

21‧‧‧ wear layer

The invention will be explained in more detail below on the basis of preferred embodiments with reference to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a nozzle with a brush roller according to a preferred embodiment of the present invention in a bottom side view, and FIG. 2 shows three filaments in a schematic cross-sectional view. A part of the brush roller according to Fig. 1 and Fig. 3 shows the indicator wire of the brush bundle according to Fig. 2 in a schematic sectional view.

detailed description

1 shows a nozzle 1 molded into an engine-powered brush device according to a preferred embodiment of the present invention from the perspective of the bottom side of the nozzle 1. The suction nozzle 1 is formed as an attachment for a vacuum cleaner not shown and basically has a housing 2 having a connector 3 for a vacuum cleaner shaped as a rotary slant joint. In the outer casing 2, the suction passage 4 in the connecting member 3 extends into the suction chamber 5. The suction chamber is located in the end face region which is remote from the connecting piece 3 and extends almost over the entire width of the outer casing.

A drive 6 shaped as an electric motor is provided in the outer casing 2, the drive The drive shaft 8 extending in the suction chamber 5 is rotated by the drive belt 7. The drive belt 7 is located in the belt housing 9, and the belt housing 9 is rotatably disposed on the end remote from the drive shaft 8. At the end close to the drive shaft 8, the drive belt 7 is engaged, and the drive shaft 8 divided into two parts is always in the gearbox housing 10, on the drive wheels 11, running from both sides of the drive wheel. The drive shaft thus extends from the drive wheel 11 to the end region of the side of the suction chamber 5, respectively. The suction nozzle 1 shown in the bottom side view on the bottom side 12 in FIG. 1 is partially disassembled in the region of the suction chamber 5, wherein on the side remote from the suction chamber 5, on the bottom side of the connection member 3 is arranged on the bottom side. Two pulleys 13.

A brush roller 14 that can be driven by the drive shaft 8 is inserted on each side of the drive shaft 8 divided into two parts. The brush roller 14 has a cylindrical brush body 15 formed as a hollow body, and the outer side of the brush body is provided with two 180° staggered brush rows 16. Each brush row 16 extends between the end regions of the brush roller 14, i.e. between the gearbox housing 10 and one of the sides of the nozzle 1, around a 180° spiral or spiral Brush body 15.

2 shows a portion of the brush roller 14 having a brush row 16 extending outwardly from the brush body 15 in a schematic cross-sectional view. The brush row 16 has three brush tows 17, which extend radially outward from the brush body 15, respectively. Here, three brush tows 17 each having five filaments 18, i.e., individual bristles, are shown. The brush roller 14 has a total of two brush rows 16 each having sixteen brush tows 17, which are arranged at regular intervals and each have a plurality of filaments 18.

The intermediate brush tow 17 shown in Figure 2 has two outer indicator wires 19 comprising three inner filaments 18. Each indicator wire 19, shown in detail in Figure 3, has a core wire 20 and an abrasion resistant layer 21. Wear layer 21 along the cylinder The entire sides of the shaped core wire 20 extend and thus wrap the core wire 20, wherein the bottom and top faces of the core wire 20 are not wrapped by the wear resistant layer 21. The thickness of the wear layer 21 is here 10% of the diameter of the indicator wire 19.

The core wire 20 is designed to be made of a lower density linear polyethylene dyed white, while the wear layer 21 is designed to be made of polyethylene terephthalate dyed in blue. When the floor is cleaned, the color of the wear layer 21 is changed by the continuous use of the brush roller 14 and the corresponding wear of the wear layer 21, whereby the user can recognize the wear of the brush roller 14 in a simple visual manner. In other words, the wear layer 21 is designed such that the color of the wear layer 21 is changed by the continuous use of the brush roller 14 to display or indicate the wear of the brush roller 14.

In the design shown in Figure 2, the middle bundle of three bundles of brush bundles 17 has two indicator wires 19, the bundle of filaments 17 shaped to indicate the middle of the bundle having only the indicator filaments 19. The brush bundle 17 of the embodiment shown in Fig. 2 is further characterized in that the lengths of the individual filaments 18, 19 are the same, however, it is also possible to have the indicator filament 19 have a smaller length than the other filaments 18, For example, shortening by 1 mm. This results in a longer durability of the indicator wire 19. In order to check the color change of the wear layer 21, an electronic detecting member such as a camera or the remaining method for recognizing a color change and/or a change in color intensity of the wear resistant layer 21 may also be provided.

1‧‧‧ nozzle

2‧‧‧ Shell

3‧‧‧Connecting parts

4‧‧‧Inhalation channel

5‧‧‧Inhalation room

6‧‧‧ Drive

7‧‧‧ drive belt

8‧‧‧Active shaft

9‧‧‧Drive belt housing

10‧‧‧ Gearbox housing

11‧‧‧Drive wheel

12‧‧‧ bottom side

13‧‧‧ pulley

14‧‧‧Brush roller

15‧‧‧ brush body

16‧‧‧brush row

Claims (9)

A brush roller for a nozzle having a brush body and a plurality of brush bundles for cleaning the floor extending outward from the brush body, wherein at least one of the brush tows has an indicator wire The indicator wire has a core wire and a wear layer, and the wear layer at least partially wraps the core wire and is designed to change the color of the wear layer as the brush roll is used continuously Or the color intensity of the wear layer color is used to indicate the wear of the brush roller. A brush roller according to claim 1, wherein at least one of the brush tows is formed as an indicator bundle having only the indicator filament, and at least one other of the filament bundles does not have the indicator filament. A brush roller according to any of the preceding claims, wherein the wear layer completely or substantially completely wraps the core wire. A brush roller according to any of the preceding claims, wherein the wear layer wraps the core wire and the thickness of the wear layer 10% of the diameter of the indicator filament. A brush roller according to any of the preceding claims, wherein all of the filament bundles have substantially the same distance extending outwardly from the brush body and/or the indicator filament has a relative filament to the other filaments A small distance extending outward from the body of the brush. A brush roller according to any of the preceding claims, wherein the core wire is made of polyethylene, in particular of lower density linear polyethylene, and/or The wear layer is made of polyethylene terephthalate, in particular made of dyed polyethylene terephthalate and/or the wear layer has other elements relative to the core wire Made of materials of color and/or other color strength. A brush roller according to any of the preceding claims, wherein the brush body is shaped as a body that can be driven by a drive shaft of the nozzle and has at least one of the bundles of filaments spaced apart from each other on the outside A brush row is formed which extends helically around the brush body at least in sections from the end region of the brush roller. A suction chamber having a bottom side opening, the brush roller according to any one of claims 1 to 7 and a nozzle for the driver of the brush roller, wherein the brush roller is disposed at the suction It is in the chamber and can be rotated by the drive. A method for manipulating a brush roller according to any one of the preceding claims, in the nozzle of claim 8, comprising the steps of: rotating a brush roller for cleaning the floor, and inspecting the wear resistance The change in color intensity of the layer and/or color is used to indicate wear of the brush roller.