# US 10,478,028 B2 · Rechargeable vacuum cleaner assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,478,028 B2 - Document ID: US10478028B2 - Status: Granted - Kind: B2 - Application number: 15/539,153 - Filed: 2016-03-22 - Published: 2018-11-22 - Granted: 2019-11-19 - Earliest claimed: 2016-01-20 - Assignees: Jiangsu Midea Cleaning Appliances Co., Ltd. - Applicants: Jiangsu Midea Cleaning Appliances Co., Ltd. - Inventors: Chaoyi Deng; Min Zhong; Xinzhou Wang; Yonghua Wang - Web page: https://patentgrep.com/patent/US10478028B2 ## CPC - A47L 5/12: with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum - A47L 5/30: with driven dust-loosening tools, e.g. rotating brushes - A47L 11/00: Machines for cleaning floors, carpets, furniture, walls, or wall coverings - A47L 9/26: Incorporation of winding devices for electric cables (devices specially adapted for repeatedly paying-out or re-storing cables B65H75/34; arrangements of electrical cables or lines between relatively-movable parts H02G11/00) - A47L 9/28: Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means - A47L 9/2873: {Docking units or charging stations (for autonomous or robotic vacuum cleaners A47L2201/02)} - A47L 9/2889: {Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user} - H02J 7/70: characterised by the mechanical construction - A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A rechargeable vacuum cleaner assembly includes: a rechargeable vacuum cleaner provided with a first magnetic member (1011); and a charging stand (100) provided with a second magnetic member (1012), in which the first magnetic member (1011) is configured to cooperate with the second magnetic member (1012) through magnetic attraction so as to position the rechargeable vacuum cleaner to the charging stand (100). ## Claims ### Claim 1 A rechargeable vacuum cleaner assembly, comprising: a rechargeable vacuum cleaner provided with a first magnetic member; a charging stand provided with a second magnetic member, wherein the first magnetic member is configured to connect with the second magnetic member through magnetic attraction so as to position the rechargeable vacuum cleaner to the charging stand; a pedal disposed on body of the charging stand and pivotable between a first position and a second position; and a safety protection device disposed on body of the charging stand and normally engaged with the pedal, wherein when the safety protection device is toggled, the safety protection device is disengaged from the pedal to make the pedal move from the first position to the second position, wherein at least two safety protection devices are provided; the at least two safety protection devices are disposed on the body and spaced apart from each other; when the at least two safety protection devices are toggled, the at least two safety protection devices are disengaged from the pedal to make the pedal move from the first position to the second position; wherein each safety protection device comprises: a safety protection member disposed at a side face of the pedal and defining an fitting groove in which an edge of the pedal is fitted; and a resetting member disposed between the safety protection member and the body, and configured to normally push the safety protection member towards a center of the pedal, wherein the safety protection member is pivotably connected to the body; wherein the safety protection member has a first end and a second end, in which the fitting groove is defined in the second end of the safety protection member; when the first end of the safety protection member is toggled, the second end of the safety protection member moves away from the center of the pedal to disengage the edge of the pedal from the fitting groove; wherein the first end of the safety protection member has a guide surface configured to toggle the first end of the safety protection member, wherein the guide surface is constructed to extend obliquely towards the center of the pedal from up to down; and wherein the guide surface is formed as an oblique plane or an oblique curved surface, extending obliquely towards the center of the pedal from up to down. ### Claim 2 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein the first magnetic member and the second magnetic member both are magnets. ### Claim 3 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein one of the first magnetic member and the second magnetic member is a magnet, and the other thereof is an iron member. ### Claim 4 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein when the pedal is in the first position, the first end of the safety protection member extends out of an inner side face of the body. ### Claim 5 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein the resetting member is configured as an elastic sheet or a spring. ### Claim 6 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein two safety protection devices are provided and located at a left side and a right side of the body respectively. ### Claim 7 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein the pedal is disposed horizontally when in the first position. ### Claim 8 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein a rotation angle of the pedal rotating from the first position to the second position is denoted as α, in which α satisfies 0°<α<60°. ### Claim 9 The rechargeable vacuum cleaner assembly according to 8, wherein α further satisfies 1°≤α≤10°. ### Claim 10 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein a top of the body is open, and the pedal is disposed within the body and spaced apart from a bottom wall of the body. ### Claim 11 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein a lower surface of the pedal is provided with at least one reinforcing rib. ### Claim 12 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein a blade is provided in the body, and an opening is defined in the pedal and corresponds to a position of the blade; when the pedal is in the second position, the blade extends out of the opening to cut off hairs around a brushroll of the vacuum cleaner placed on the pedal; when the pedal is in the first position, the blade is located below the opening, further comprising a microswitch disposed within the body, wherein when the pedal is in the second position, the microswitch is triggered to make the charging stand stop charging and rotate the brushroll; wherein the blade extends curvedly along a length direction thereof; wherein the blade extends in an arc or wavy manner along the length direction thereof; wherein the body has a base, and an elastic member is disposed between the blade and the base; a blade holder disposed on the base, wherein the blade is disposed on the blade holder; the elastic member is disposed between the blade and the blade holder and/or between the blade holder and the base; wherein when the elastic member is disposed between the blade holder and the base, an accommodating groove is defined in the base and configured to accommodate the elastic member; and wherein an upper surface of the elastic member is higher than an upper surface of the base, wherein the elastic member is made of soft rubber. ### Claim 13 (depends on 12) The rechargeable vacuum cleaner assembly according to claim 12, wherein the blade is vertically disposed. ### Claim 14 (depends on 12) The rechargeable vacuum cleaner assembly according to claim 12, wherein the pedal is provided with a stopping piece, and the opening is defined in the stopping piece, wherein the stopping piece is horizontally disposed, and wherein a clearance groove is defined in a lower surface of a part, adjacent to the opening, of the stopping piece, wherein a distance between an inner wall of the clearance groove and an upper surface of the stopping piece is gradually decreased in a direction towards a center of the opening, and wherein the stopping piece is made of soft rubber. ### Claim 15 (depends on 1) The rechargeable vacuum cleaner assembly according to claim 1, wherein the pedal has a first end and a second end, and the first end of the pedal is pivotably connected to the body through a pivot shaft; an elastic resetting member is provided between the second end of the pedal and the body, and configured to normally push the pedal towards the first position. ### Claim 16 (depends on 15) The rechargeable vacuum cleaner assembly according to claim 15, wherein a side of the body adjacent to the second end of the pedal is provided with a position-limiting member, and the position-limiting member is located at a side of the pedal away from the elastic resetting member. ### Claim 17 (depends on 15) The rechargeable vacuum cleaner assembly according to claim 15, wherein the elastic resetting member is configured as a spring. ### Claim 18 (depends on 15) The rechargeable vacuum cleaner assembly according to claim 15, wherein the pedal extends along a front-rear direction; the first end of the pedal is a rear end thereof, and the second end of the pedal is a front end thereof.