Abstract: A down-pressure mopping type sweeping robot includes a sweeper body and a sweeper water tank. The sweeper body includes a battery pack and a mounting portion formed at a bottom of the sweeper body. A protrusion portion is formed in the mounting portion. The sweeper water tank is detachably installed in the mounting portion for wetting the ground to be cleaned during a mopping process. A bottom of the sweeper water tank is fixed with a rag through a sticky-and-hook strap. Both sides of an inside of the sweeper body are fixed with down-pressure assemblies by bolts. The down-pressure assembly includes a down-pressure protrusion capable of elastically protruding into the mounting portion. The down-pressure protrusions are elastically pressed downwardly on a top of the sweeper water tank so that the rag can be stably pressed against the ground to be cleaned.

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.

Abstract: The present invention belongs to the field of small household appliances manufacturing technology, which relates to a plumb-bob calibration apparatus (21, 22) and a glass-wiping robot having the plumb-bob calibration apparatus. The plumb-bob calibration apparatus (21, 22) comprises a housing. The housing has arranged therein an orbit space (7) and an action element (2). The action element (2) moves within the orbit space (7). The housing also has arranged therein a sensor component that senses induction signals of the action element (2) when at different positions in the orbit space (7). Use of the plumb-bob calibration apparatus aids the working of an acceleration sensor in the glass-wiping robot, and verifies the accuracy of a detection result, thus allowing the glass-wiping robot to make horizontal or vertical movements with reduced linear error at all times.

Abstract: A vacuum air pump and a glass-wiping device are provided. The air pump comprises a driving motor (2), an air pump body (1) and a piston air pump member (15), a rotating shaft (3) is provided in the air pump body, the driving motor transmits power to the rotating shaft via a transmission mechanism, a rotating wheel is fixed on the rotating shaft, a diameter-variable annular limitation groove (5) is formed in the rotating wheel; at least two piston air pump members are provided around the air pump body, a piston rod of each of the members is provided with a rolling element (6) at the end thereof, the rolling element is embedded in the annular limitation groove, the rotating shaft drives the rotating wheel to rotate, and the rolling element rolls within the diameter-variable annular limitation groove in the circumferential direction of the rotating shaft to thereby drive the piston rod (7) to make a reciprocating movement depending on the size change in radius of the diameter-variable annular limitation groove.

Abstract: A laser-guided walking operation system for a self-moving robot comprising a self-moving robot (10) and a laser beam transmitter (20). A control mechanism (12) and a walking mechanism (13) are arranged on a machine body (11) of the self-moving robot. The laser beam transmitter (20) is arranged at an edge of an operation area of the self-moving robot. A laser receiver (15) is arranged correspondingly on the machine body (11). The control mechanism controls the walking mechanism so that the self-moving robot performs walking operation along a linear path guided by a laser beam signal transmitted by the laser beam transmitter within the operation region.

Abstract: A crankshaft-type vacuum air pump comprising a drive motor (1), an air pump main body (2), and piston air pump components (3) arranged on the air pump main body (2). A crankshaft unit is arranged within the air pump main body (2). The top of the crankshaft unit is connected to the air pump main body (2) via an upper eccentric wheel (4), while the end is connected to the drive motor (1) via a lower eccentric wheel (5). The drive motor (1) outputs power to rotate the crankshaft unit. The crankshaft unit is connected to the piston air pump components (3) and drives the piston air pump components into motion, thus completing air intake and air discharge of the piston air pump components (3). The air pump is structurally simple and compact, the crankshaft per se is centrosymmetric, and one or more crankshaft units are made to serve as a rotary shaft, where the overall center of gravity during rotation is always located at the center of rotation and no vibration is caused by a centrifugal force.

Abstract: A dual-chamber dual-action air pump and a glass-wiping robot having the air pump. The air pump comprises a cylinder and, connected to the cylinder, a drive apparatus and a piston. The drive apparatus drives the piston via a transmission apparatus to perform reciprocating movement in the cylinder. A sealing element fixedly connected to the piston rod is arranged within the cylinder. The sealing element partitions the cylinder into a first chamber (A1) and a second chamber (A2). Both the first chamber and the second chamber respectively are provided with a first one-way valve and a second one-way valve. When the piston rod drives the sealing element to perform reciprocating movement, the first chamber and the second chamber simultaneously inhale air and exhaust air. The dual-chamber dual-action air pump is compact in structure, and provides doubled air flow rate and doubled efficiency.

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.