Nanjing Chervon Industry

A portable circular saw for cutting metal includes a base including a lower surface side abutting against a cut material and a cutter body at least partially supported on the upper surface side of the base. The cutter body includes a circular saw blade, a fixed shield covering the outer circumferential side of the circular saw blade, and a metal chip guide tube disposed in the fixed shield, surrounding part of the outer circumferential side of the circular saw blade, and including a chip guide cavity for guiding a chip. The ratio of the outer surface area S1 of the metal chip guide tube to a surface area S2 of the metal chip guide tube covered by the fixed shield is higher than 1.

An inflator includes a motor, a power mechanism, at least one air vent, and a main housing. The power mechanism is driven by the motor and configured to generate airflow. The air vent is connected to a flexible duct for air intake and/or air discharge to allow the airflow to flow. The main housing accommodates the motor and the power mechanism and has a battery coupling portion, where a battery pack that provides a power supply for the motor is capable of being detached from or mounted to the battery coupling portion. The main housing further has a first coupling portion configured to detachably connect an illumination device. The illumination device is capable of illuminating a working region of the inflator.

A fastener driver includes a striking assembly including a striking member configured to strike a fastener; a drive assembly configured to drive the striking member; and an electric motor providing a driving force for at least the drive assembly. The drive assembly includes a drive wheel configured to engage with the striking member to drive the striking member to move along the extension direction of the striking member. The distance D from the centroid of the drive wheel to the rotation axis of the drive wheel is less than or equal to 1.5 mm. In this manner, the regular wobbles of the fastener driver can be reduced, thereby improving the user's operating feel.

A clamping device includes a shaft body including an axial opening and at least one hole, where the axial opening extends along a first straight line; at least one retainer, where each of the at least one retainer is configured to move within a respective hole of the at least one hole; a sleeve sleeved on the outer circumference of the shaft body and configured to move axially relative to the shaft body; an abutting member abutting against the rear side of the at least one retainer; a first elastic member located on the front side of the at least one retainer; and a second elastic member located on the rear side of the at least one retainer and being in contact with the abutting member. The sleeve includes a protrusion extending along a second straight line, and the protrusion abuts against the shaft body, where the second straight line intersects with the first straight line. Along the direction of the first straight line, the protrusion is located at the front end of the at least one retainer and is not in contact with the at least one retainer.

A charger includes: a housing; a charging interface configured to be electrically connected to a first battery pack; a direct current power interface configured to be electrically connected to a second battery pack; and a drive assembly accommodated in the housing and configured to supply power to the charging interface. The drive assembly is electrically connected to the charging interface and the direct current power interface and is configured to transfer electric energy from the second battery pack to the first battery pack, the maximum output power of the drive assembly is greater than or equal to 2000 W, and the first battery pack and the second battery pack are detachably connected to the charger, so as to be detached and then mounted to a power tool and supply power to the power tool.

Provided are a handheld power tool and a chainsaw. After the battery pack is mounted on the handheld power tool, in the case where the handheld power tool does not satisfy the balance requirement, the electric motor does not start, thereby avoiding safety risks or an impact on the working effect during operation.

A pressure washing apparatus includes a body and a spray gun connectable to the body; where the body includes a housing; a power unit located in the housing and including an electric motor for making the spray gun spray a liquid; a power supply device including at least one battery pack to power the electric motor; and a grip for a user to hold to carry and move the pressure washing apparatus. When the pressure washing apparatus is in operation, a maximum value of a product of pressure and a flow rate of the liquid sprayed from the spray gun is greater than or equal to 2000 PSI·GPM; and the volume of the body is less than or equal to 0.032 m³.

A wheeled work vehicle includes: a walking mechanism including walking wheels and a walking motor for driving the walking wheels; a work mechanism for performing a function of the wheeled work vehicle; a power supply assembly at least configured to power the walking motor; a temperature acquisition unit at least configured to acquire an operating temperature of the walking motor; a driver circuit connected to at least the walking motor to drive the walking motor; and a controller electrically connected to the temperature acquisition unit and the driver circuit, where the controller is configured to output a target instruction to the driver circuit so as to control an input signal of the walking motor. The controller is further configured to, when a parameter of the walking motor related to the operating temperature exceeds a preset range, adjust the target instruction to gradually reduce the input of the walking motor.

An airflow device includes: a housing assembly; an electric motor disposed in the housing assembly; a fan assembly including at least fan blades, where the fan assembly is configured to be driven by the electric motor to generate an airflow; an air suction port configured as an airflow inlet; and an air blowing port configured as an airflow outlet. The airflow device further includes an electrostatic conduction device disposed along the circumferential direction of a fan. The electrostatic conduction device includes a first end configured to be close to one of the fan blades and a second end configured to be close to the air blowing port.

The present invention relates to a manned mower (100) including an operating mechanism (30). The operating mechanism includes a first operating lever (31, 51) and a second operating lever (32, 52). The first operating lever and the second operating lever are operable to control a first drive wheel (411R) and a second drive wheel (411L), respectively. Each of the first operating lever and the second operating lever is provided with a handle portion (311, 511). The operating mechanism further includes a display assembly (33, 53) and an operating assembly (34, 54). The display assembly (33, 53) is at least disposed on the handle portion (311) of the first operating lever (31) and is configured to display at least the operation state of the manned mower. The operating assembly (34, 54) is operated to enable a controller to receive an operation instruction and is at least disposed on the first or second operating lever.