Upright vacuum cleaner

Patent metadata

Field	Value
Publication number	US-2018263443-A1
Application number	US-201615539155-A
Country	US
Kind code	A1
Filing date	Mar 4, 2016
Priority date	Dec 10, 2015
Publication date	Sep 20, 2018
Grant date	—

Abstract

An upright vacuum cleaner ( 1 ) is provided, including a brushroll assembly ( 100 ), a motor assembly ( 200 ) and a body assembly ( 300 ). The brushroll assembly ( 200 ) includes a brushroll casing ( 12 ) and a brushroll ( 11 ). The motor assembly ( 200 ) includes a motor housing ( 21 ) and a motor ( 22 ), and the motor ( 22 ) drives the brushroll ( 11 ) to roll via a drive belt ( 13 ). The body assembly ( 300 ) includes a body ( 31 ) and a bridging member ( 32 ) mounted to the body ( 31 ), and the bridging member ( 32 ) is pivotably connected with the motor housing ( 21 ) to allow the body ( 31 ) to be rotatable between an upright position and an oblique position. When the body ( 31 ) is rotated from the upright position to the oblique position, the bridging member ( 32 ) pushes the brushroll casing ( 12 ) to move in a direction running away from the motor housing ( 21 ) so as to tension the drive belt ( 13 ).

First claim

1 . An upright vacuum cleaner, comprising:
a brushroll assembly comprising a brushroll casing and a brushroll disposed in the brushroll casing; a motor assembly comprising a motor housing and a motor disposed in the motor housing, the motor being configured to drive the brushroll to roll via a drive belt; a body assembly comprising a body and a bridging member mounted to the body, wherein the bridging member is pivotably connected with the motor housing to allow the body to be rotatable between an upright position and an oblique position, and the bridging member is configured to push the brushroll casing to move in a direction running away from the motor housing so as to tension the drive belt, when the body is rotated from the upright position to the oblique position.

2 . The upright vacuum cleaner according to claim 1 , further comprising:
a gear and rack assembly disposed between the bridging member and the brushroll casing, so that the bridging member drives the brushroll casing to move via the gear and rack assembly.

3 . The upright vacuum cleaner according to claim 2 , wherein the gear and rack assembly comprises a gear and a rack, the rack is mounted to the brushroll casing horizontally and extends along a front-and-rear direction, and the gear is mounted to the bridging member vertically and meshed with the rack.

4 . The upright vacuum cleaner according to claim 3 , wherein the gear comprises:
an arc rim whose central axis is a pivoting axis of the bridging member; and two groups of meshing teeth connected to two ends of the rim respectively, wherein each group of meshing teeth comprises a plurality of single meshing teeth.

5 . The upright vacuum cleaner according to claim 3 , wherein the bridging member comprises a top plate and two side plates connected to two sides of the top plate, and the gear and the side plate are molded integrally.

6 . The upright vacuum cleaner according to claim 3 , wherein two racks are provided and disposed at two sides of a longitudinal central axis of the brushroll casing symmetrically, and two gears are provided and fitted with the two racks correspondingly.

7 . The upright vacuum cleaner according to claim 6 , wherein the two racks are both mounted to the brushroll casing via a connecting rod.

8 . The upright vacuum cleaner according to claim 7 , wherein two connecting rods are provided and respectively connected with the two racks correspondingly, and the two connecting rods are respectively mounted to the brushroll casing independently.

9 . The upright vacuum cleaner according to claim 7 , wherein one connecting rod is provided and extends along a left-and-right direction, two ends of the connecting rod are connected with front ends of the two racks respectively, and the connecting rod is mounted to the brushroll casing.

10 . The upright vacuum cleaner according to claim 1 , further comprising:
an elastic member having two ends connected with the brushroll casing and the motor housing respectively so as to hinder the brushroll casing from moving in the direction running away from the motor housing.

11 . The upright vacuum cleaner according to claim 10 , wherein two elastic members are provided and disposed at two sides of a longitudinal central axis of the brushroll casing symmetrically.

12 . The upright vacuum cleaner according to claim 10 , wherein the elastic member is a spring.

13 . The upright vacuum cleaner according to claim 1 , wherein a rotating axis of the motor and a rotating axis of the brushroll are arranged in a non-parallel manner, and the drive belt is winded upon a motor shaft of the motor and the brushroll.

14 . The upright vacuum cleaner according to claim 13 , wherein the motor shaft is arranged vertically, the rotating axis of the brushroll is perpendicular to the motor shaft, and the drive belt is twisted by an angle of 90°.

15 . The upright vacuum cleaner according to claim 13 , wherein the brushroll comprises a first brushroll section provided with bristles, a second brushroll section provided with bristles, and a connecting shaft section connected between the first brushroll section and the second brushroll section, in which the drive belt is winded upon the motor shaft and the connecting shaft section so that the motor drives the brushroll to roll.

16 . The upright vacuum cleaner according to claim 15 , wherein respective central axes of the first brushroll section, the second brushroll section and the connecting shaft section are located in a same line, and the first brushroll section and the second brushroll section are arranged symmetrically with respect to the drive belt.

17 . The upright vacuum cleaner according to claim 15 , wherein the brushroll casing defines a mounting chamber, a first air-suction channel and a second air-suction channel, the mounting chamber is configured to accommodate the connecting shaft section and the drive belt therein, and the first air-suction channel and the second air-suction channel are located at two sides of the mounting chamber respectively and separated from the mounting chamber.

18 . The upright vacuum cleaner according to claim 17 , wherein the first air-suction channel and the second air-suction channel both comprise a lateral air-suction channel section and a longitudinal air-suction channel section, the lateral air-suction channel section extends along an axial direction of the brushroll, and the longitudinal air-suction channel section extends along a direction perpendicular to the axial direction of the brushroll and is communicated with the corresponding lateral air-suction channel section.

Assignees

• Jiangsu Midea Cleaning Appliances Co Ltd

Inventors

• Xiao Xiahu
• Hu Wei
• Zou Hui

Classifications

• A47L5/00

  Structural features of suction cleaners · CPC title

• A47L9/22

  Mountings for motor fan assemblies · CPC title

• A47L9/165

  Construction of inlets · CPC title

• A47L9/1666

  with filtering means · CPC title

• A47L5/225

  Convertible suction cleaners, i.e. convertible between different types thereof, e.g. from upright suction cleaners to sledge-type suction cleaners · CPC title