US-12616348-B2 - Handheld cleaning device

US12616348B2US 12616348 B2US12616348 B2US 12616348B2US-12616348-B2

Abstract

A handheld cleaning device includes a surface-moving portion and an upright portion. The surface-moving portion is in contact with a surface to be cleaned and is connected with the upright portion. The upright portion is configured to move the surface-moving portion in a case in which the surface-moving portion is in operation. The handheld cleaning device further includes a power battery configured to supply power to the handheld cleaning device. The surface-moving portion further includes at least two non-coaxial brushrolls configured to clean stains on the surface to be cleaned. The rotation speed of each brushroll is less than 3000 r/min.

Inventors

Yunlong YANG

Assignees

BEIJING ROBOROCK TECHNOLOGY CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20230515
Priority Date: 20210429

Claims (16)

1 . A handheld cleaning device, comprising: a surface-moving portion; an upright portion; and a power battery, configured to supply power to the handheld cleaning device, wherein the surface-moving portion is configured to be in contact with a surface to be cleaned and rotatably connected with the upright portion, the upright portion is configured to move the surface-moving portion, and the surface-moving portion further comprises: at least two brushrolls, configured to clean stains on the surface to be cleaned, wherein a rotation speed of each of the at least two brushrolls is less than 3000 r/min; a fluid distributor, configured to distribute cleaning liquid to a surface of the at least two brushrolls; and a wiper unit corresponding to each of the at least two brushrolls, each wiper unit comprising a first wiper and a second wiper, wherein a hardness of the first wiper is greater than a hardness of the second wiper, wherein as the at least two brushrolls rotate from a contact position with the surface to be cleaned, stains and dirty water attached to each of the at least two brushrolls are first wiped off by the respective first wiper, and clean cleaning liquid flowing to the at least two brushrolls is then wiped by the respective second wiper, and wherein the fluid distributor distributes cleaning liquid to each of the at least two brushrolls between the respective first and second wipers.
2 . The handheld cleaning device according to claim 1 , wherein each of the respective first and second wipers is located above the respective brushroll.
3 . The handheld cleaning device according to claim 1 , wherein each of the respective first and second wipers are disposed at an angle with respect to the circumference of the brushroll at the location of the respective wipers and are in interference contact with the circumference of the brushroll.
4 . The handheld cleaning device according to claim 1 , wherein the fluid distributor comprises a fluid inlet, a fluid distribution channel, and at least two fluid outlets; wherein the fluid inlet is connected with a liquid supply pipe, and the fluid distribution channel is configured to distribute inflowing fluid to the at least two fluid outlets.
5 . The handheld cleaning device according to claim 1 , wherein the upright portion further comprises a stain collector; the stain collector further comprises a collection tank and at least one suction channel; and each of the at least one suction channel comprises a first end connected with the collection tank, and a second end arranged on a side of the brushrolls away from the surface to be cleaned, such that the stains are collected into the collection tank via the suction channel.
6 . The handheld cleaning device according to claim 1 , wherein the surface-moving portion further comprises a brushroll drive gearbox, configured to be in transmission connection with the at least two brushrolls, respectively, so as to drive the at least two brushrolls respectively to rotate.
7 . The handheld cleaning device according to claim 1 , wherein the handheld cleaning device further comprises: a control circuit, configured to control the handheld cleaning device; and a posture sensor, connected to the control circuit and configured to sense movement direction information of the handheld cleaning device and to transmit the movement direction information to the control circuit.
8 . The handheld cleaning device according to claim 7 , wherein the posture sensor comprises a six-axis sensor.
9 . The handheld cleaning device according to claim 1 , wherein the at least two brushrolls comprise a front brushroll and a rear brushroll, the front brushroll and the rear brushroll are arranged in parallel on a horizontal plane, and the front brushroll and the rear brushroll are configured to rotate circumferentially in different directions, to take garbage on the surface to be cleaned into a gap between the front brushroll and the rear brushroll.
10 . The handheld cleaning device according to claim 7 , wherein the control circuit is configured to: control a rotation speed of the front brushroll to be greater than a rotation speed of the rear brushroll, in a case in which the movement direction information indicates a forward movement; and control the rotation speed of the rear brushroll to be greater than the rotation speed of the front brushroll, in a case in which the movement direction information indicates a backward movement.
11 . The handheld cleaning device according to claim 1 , wherein one of the at least two brushrolls comprises a first brushroll part and a second brushroll part that are arranged coaxially, both the first brushroll part and the second brushroll part are connected to a drive mechanism; the drive mechanism comprises a first motor, a belt and a driven shaft, the belt is connected with the first motor and with the driven shaft, respectively, the driven shaft is provided at a position where the first brushroll part and the second brushroll part are close to each other; the driven shaft further comprises a rotating rod, which is extended from the driven shaft in respective axis directions of the driven shaft, and the first brushroll part and the second brushroll part are sleeved on the rotating rod respectively; and the first motor drives the belt to rotate, which in turn drives the first brushroll part and the second brushroll part to rotate.
12 . The handheld cleaning device according to claim 1 , wherein the at least two brushrolls comprise a first brushroll and a second brushroll arranged adjacently.
13 . The handheld cleaning device according to claim 12 , wherein the stains on the surface to be cleaned are collected from the at least two brushrolls by being suctioned between the first brushroll and the second brushroll.
14 . The handheld cleaning device according to claim 7 , wherein the handheld cleaning device further comprises a liquid level sensor, installed on at least one of a cleaning liquid tank, a collection tank and a liquid supply pipe of the handheld cleaning device, the liquid level sensor is connected with the control circuit, and is configured to sense liquid level information of the handheld cleaning device and to transmit the liquid level information to the control circuit.
15 . The handheld cleaning device according to claim 1 , wherein the fluid distributor is located above the at least two brushrolls.
16 . A handheld cleaning device, comprising: a surface-moving portion; an upright portion; and a power battery, configured to supply power to the handheld cleaning device, wherein the surface-moving portion is configured to be in contact with a surface to be cleaned and rotatably connected with the upright portion, the upright portion is configured to move the surface-moving portion, and the surface-moving portion further comprises: at least two brushrolls, configured to clean stains on the surface to be cleaned, wherein a rotation speed of each of the at least two brushrolls is less than 3000 r/min; a fluid distributor, configured to distribute cleaning liquid to a surface of the at least two brushrolls; and a wiper unit corresponding to each of the at least two brushrolls, each wiper unit comprising a stain sub-wiper, configured to wipe off the cleaning liquid or the stains remaining on a circumference of each respective brushroll, and a liquid retaining sub-wiper, configured to enable each respective brushroll to fully contact the cleaning liquid, wherein a hardness of the stain sub-wiper is greater than a hardness of the liquid retaining sub-wiper wherein as the at least two brushrolls rotate from a contact position with the surface to be cleaned, stains and dirty water attached to the at least two brushrolls are first wiped off by the respective stain sub-wiper, and clean cleaning liquid flowing to the at least two brushrolls is then wiped by the respective liquid retaining sub-wiper, and wherein the fluid distributor distributes cleaning liquid to each of the at least two brushrolls between the respective stain sub-wiper and liquid retaining sub-wiper.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application is a Continuation Application of U.S. patent application Ser. No. 17/698,138, which is a Continuation Application of a PCT Application under PCT/CN2021/116987 filed on Sep. 7, 2021 claiming the priority of Chinese Patent Application No. 202110474030.6 filed on Apr. 29, 2021; the disclosures of all above are incorporated herein by reference in their entireties as a part of the present application for all purposes. TECHNICAL FIELD Embodiments of the present disclosure relate to a handheld cleaning device. BACKGROUND Existing intelligent cleaning machines can absorb sewage and then collect it while cleaning the ground, which has advantages including being friendly to the environment, saving energy, and being highly efficient, etc. Although intelligent cleaning machines have been widely used in various scenarios, brushrolls of the existing intelligent cleaning machines have single structures, which results in poor cleaning effect and poor user experience. SUMMARY According to an aspect of the present disclosure, there is provided a handheld cleaning device, including a surface-moving portion and an upright portion. The surface-moving portion is configured to be in contact with a surface to be cleaned and is connected with the upright portion. The upright portion is configured to move the surface-moving portion. The handheld cleaning device further includes a power battery configured to supply power to the handheld cleaning device. The surface-moving portion further includes at least two brushrolls that are disposed non-coaxially and are configured to clean stains on the surface to be cleaned. The rotation speed of each of the at least two brushrolls is less than 3000 r/min. In some embodiments of the present disclosure, the surface-moving portion further includes at least two wipers, which correspond to the at least two brushrolls respectively; as to a wiper and a brushroll which correspond to each other, the wiper is disposed close to or in contact with a circumference of the brushroll, and is configured to wipe off cleaning liquid or stains remaining on the circumference of the brushroll. In some embodiments of the present disclosure, the wiper is located above the respective brushroll. In some embodiments of the present disclosure, the wiper includes a stain sub-wiper, configured to wipe off the cleaning liquid or the stains remaining on the circumference of the brushroll. In some embodiments of the present disclosure, the wiper further includes a liquid retaining sub-wiper, configured to enable the cleaning liquid to fully contact the brushroll. In some embodiments of the present disclosure, the wiper is arranged at an angle with respect to the circumference of the brushroll, and is in interference contact with the circumference of the brushroll. In some embodiments of the present disclosure, the surface-moving portion further includes a fluid distributor. The fluid distributor includes a fluid inlet, a fluid distribution channel and at least two fluid outlets. The fluid inlet is connected with a liquid supply pipe, and the fluid distribution channel distributes inflowing fluid to the at least two fluid outlets. In some embodiments of the present disclosure, the upright portion further includes a stain collector. The stain collector includes a collection tank and at least one suction channel. Each of the at least one suction channel has a first end connected to the collection tank, and a second end arranged on a side of the brushrolls away from the surface to be cleaned, or arranged at a position close to the surface to be cleaned, so as to collect the stains into the collection tank via the suction channel. In some embodiments of the present disclosure, the surface-moving portion further includes at least two drive gearboxes, configured to be in transmission connection with the at least two brushrolls respectively so as to drive the at least two brushrolls respectively to rotate. In some embodiments of the present disclosure, the handheld cleaning device further includes a control circuit, configured to control the handheld cleaning device; and a posture sensor connected to the control circuit, and configured to sense movement direction information of the handheld cleaning device and to transmit the movement direction information to the control circuit. In some embodiments of the present disclosure, the posture sensor includes a six-axis sensor. In some embodiments of the present disclosure, the at least two brushrolls include a front brushroll and a rear brushroll. The front brushroll and the rear brushroll are arranged in parallel on a horizontal plane, and the front brushroll and the rear brushroll are configured to rotate circumferentially in different directions, to take garbage on the surface to be cleaned into a gap between the front brushroll and the rear brushroll. In some embodiments of the present disclosure, the control circuit is c