Sweeping brush for an automatically moving cleaning device

Patent metadata

Field	Value
Publication number	US-11006803-B2
Application number	US-201816106630-A
Country	US
Kind code	B2
Filing date	Aug 21, 2018
Priority date	Aug 22, 2017
Publication date	May 18, 2021
Grant date	May 18, 2021

Abstract

A sweeping brush for an automatically moving cleaning device has a rotational axis receptacle for receiving a rotational axis of the cleaning device and at least one bundle receptacle that extends outwardly from a transition area on the rotational axis receptacle, which holds a bristle bundle having a plurality of bristles. The bundle receptacle is arched as viewed in an axial direction of the rotational axis receptacle. In order to optimize known sweeping brushes in terms of their service life and cleaning properties, the bundle receptacle is fabricated out of an elastic material.

First claim

What is claimed is:

1. A sweeping brush for an automatically moving
cleaning device, comprising:
a rotational axis receptacle for receiving a rotational axis of the cleaning device, and
at least a first bundle receptacle and a second bundle receptacle that extends outwardly from a transition area on the rotational axis receptacle, the first bundle receptacle and the second bundle receptacle each holding a bristle bundle having a plurality of bristles, the bristles each having a longitudinal extension with respect to a radial direction of the transition area,
wherein the first bundle receptacle and/or the second bundle receptacle are arched as viewed in an axial direction of the rotational axis receptacle, wherein the bundle receptacles extend at an inclination to a plane having the rotational axis receptacle as viewed in a direction oriented perpendicular to the rotational axis, and wherein the longitudinal extension of each of the bristles follows a longitudinal extension of the bundle receptacles, wherein at least one of the first bundle receptacle or the second bundle receptacle is fabricated out of an elastic material, and wherein the first bundle receptacle and second bundle receptacles exhibit material properties and/or cross-sectional shapes in the form of profile cross sections perpendicular to the longitudinal extension at a free end area of the bundle receptacles abutting the bristle bundles, that differ from each other.

2. The sweeping brush according to claim 1 , wherein the end area of each bundle receptacle facing away from the rotational axis receptacle is displaced by an angle of approx. 20° to 80° relative to a radial direction that intersects the rotational axis and transitional area.

3. The sweeping brush according to claim 1 , wherein the transition area has a bundle bearings on which the bristle bundles are articulated relative to a circumferential direction, so that the bristle bundles can be swiveled around a bearing midpoint of the bundle bearings during a rotation of the sweeping brush.

4. The sweeping brush according to claim 3 , wherein the bristle bundles are overmolded with a material of the bundle receptacles.

5. The sweeping brush according to claim 3 , wherein the length of each of the bundle receptacles is approximately one to three times as large as a length of the bristle bundle protruding from each bundle receptacle.

6. The sweeping brush according to claim 3 , wherein the bundle receptacles extend at an angle of approximately 5° to 20° to the plane having the rotational axis receptacle.

7. An automatically moving cleaning device having a sweeping brush according to claim 1 , wherein the bundle receptacles are arched opposite a rotational direction of the rotational axis as viewed in the axial direction of the rotational axis receptacle.

Assignees

• Vorwerk Co Interholding

Inventors

• Blum Michael

Classifications

• A46B5/0012 Primary

  Brushes with two or more heads on the same end of a handle for simultaneous use, e.g. cooperating with each-other · CPC title

• A46B7/06

  movably during use {, i.e. the normal brushing action causing movement (driven brush bodies A46B13/00)} · CPC title

• A46B5/0066

  Flexible resilience by elastic deformation of the material · CPC title

• A47L9/0411

  driven by electric motor · CPC title

• A46B2200/3033

  Household brush, i.e. brushes for cleaning in the house or dishes · CPC title