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US 9,848,746 B2Granted
Vacuum cleaner and suction nozzle thereof
AssigneeEcovacs Robotics Co., Ltd.
InventorYongbing Feng
Life of this patent
Estimating the term…
Abstract
A vacuum cleaner and suction nozzle thereof. The vacuum cleaner has a housing, dust collecting unit, filter assembly, motor assembly and roller brush. The suction nozzle has a bottom housing, front cover and roller brush. The housing includes a concave cavity; the bottom housing and the front cover latch together to form a chamber; the roller brush assembly and the separation piece fit into this chamber; the separation piece corresponds to a transmission component of the roller brush. When rotating at high speed, the roller brush forms a seamless and closed separation face with the separation piece, preventing foreign matter from entering the transmission component, thus avoiding reduced suction and damage due to a tangled synchronous belt or a shaft jamming a roller brush bearing.
Claims15
A vacuum cleaner, comprising:
- a housing, a dust collecting unit, a filter assembly, a motor assembly and a roller brush assembly, wherein
- the dust collecting unit, the filter assembly and the motor assembly are located in the housing, and the motor assembly is communicated with the dust collecting unit via the filter assembly, the housing has a concave cavity communicating with an outside, and the roller brush assembly is disposed in the concave cavity which communicates with the dust collecting unit via a duct;
- the roller brush assembly comprises a roller brush including a brush body and a brush part disposed on the brush body, the brush part comprising at least one bristle tuft extending radially from the brush body, the at least one bristle tuft having a free end for contacting a floor surface during cleaning;
- end portions of the brush body connect with the housing via bearings, and a transmission component is arranged on the brush body which connects to a driving mechanism;
- a separation piece is provided on the housing defining the concave cavity and is located at a side of the transmission component;
- the separation piece has a fixed end fixed on the housing and a free end that extends towards the longitudinal direction of the brush part;
- the fixed end of the separation piece extends, inside the concave cavity along a rotation direction of the roller brush, from a front side of an opening of the concave cavity to a rear side of the opening of the concave cavity in a direction generally perpendicular to a longitudinal axis of the roller body;
- and
- the free end of the separation piece is substantially aligned with at least one bristle tuft of the roller brush and at least reaches to a free end in the longitudinal direction of the at least one substantially aligned bristle tuft such that when the roller brush is in high speed rotation, the at least one substantially aligned bristle tuft brush part is periodically rotated into contact with the free end of the separation piece and, in conjunction with the separation piece, blocks foreign objects out of the transmission component.
6 more elements
A suction nozzle of a vacuum cleaner, comprising:
- a bottom housing, a front cover and a roller brush part, wherein
- the bottom housing, whose bottom is provided with an opening communicating with an outside, latches with the front cover to form a chamber, and the roller brush assembly is disposed inside the chamber;
- the roller brush assembly comprises a roller brush including a brush body and a brush part disposed on the brush body the brush part comprising at least one bristle tuft extending radially from the brush body, the at least one bristle tuft having a free end that extends out of the chamber during rotation for contacting a floor surface during cleaning;
- end portions of the brush body are connected with the bottom housing via bearings, and the brush body is provided with a transmission component connecting to a driving mechanism;
- a separation piece is provided on the housing defining the chamber, and is located at a side of the transmission component;
- the separation piece has a fixed end fixed on the housing and a tree end that extends towards the longitudinal direction of the brush part;
- the fixed end of the separation piece extends, inside the chamber along a rotation direction of the roller brush, from a front side of an opening of the chamber to a rear side of the opening of the chamber in a direction generally perpendicular to a longitudinal axis of the roller body;
- and
- the free end of the separation piece is substantially aligned with at least one bristle tuft of the roller brush and at least reaches to a free end in the longitudinal direction of the at least one substantially aligned bristle tuft such that when the roller brush is rotating, the at least one substantially aligned bristle tuft is periodically rotated into contact with the free end of the separation piece and, in conjunction with the separation piece, block foreign objects away from the transmission component.
6 more elements
Dependencies are inferred from the claim text.