Sun, Yiming

A power tool includes a housing; a working head; an electric motor disposed in the housing and configured to drive the working head; a load detection unit configured to detect real-time load data of the power tool; and a controller electrically connected to at least the load detection unit. The controller is configured to acquire the real-time load data outputted by the load detection unit; generate an amplitude limiting parameter of a terminal voltage of the electric motor according to the real-time load data and a first load limit; and adjust the terminal voltage of the electric motor based on the amplitude limiting parameter of the terminal voltage of the electric motor.

An electric working device includes a transmission assembly. The transmission assembly includes at least a gear set that externally meshes and a transmission housing for accommodating the gear set. The transmission housing further includes a guide member (46) and a pressure relief valve (47). The pressure relief valve (47) is configured to adjust air pressure in the transmission housing. The guide member (46) extends inward from a sidewall of the transmission housing along a circumferential direction of a gear with a maximum diameter and is disposed between the largest gear (4331) and the pressure relief valve (47).

Provided is a walk-behind mower. The walk-behind mower includes a body including a traveling assembly and a cutting assembly; an operating device electrically connected to the body, wherein the operating device includes a switch box; and a grass collecting basket selectively connected to the body and configured to collect grass clippings generated by cutting, wherein the length of the grass collecting basket in the lateral direction of the walk-behind mower is the width of the grass collecting basket. The walk-behind mower further includes a mounting assembly including at least one protrusion disposed on the switch box and used for mounting an attachment, wherein the span of the mounting assembly in the lateral direction of the walk-behind mower is greater than or equal to 5 cm and less than the width of the grass collecting basket.

The application discloses a brake system for all-terrain vehicle including a front-wheel brake assembly, a rear-wheel brake assembly, a brake pedal, a handbrake pump, and a hydraulic pump. The hydraulic pump includes a pump body, a piston mechanism, a connecting rod mechanism, and an elastic mechanism. The pump body defines a handbrake oil inlet, a first oil outlet, a second oil outlet, and a fluid supplement port. The handbrake oil inlet is in fluid communication with the handbrake pump, the first oil outlet is in fluid communication with a pressure port of the rear-wheel brake assembly through an oil delivery pipe, and the second oil outlet is in fluid communication with a pressure port of the front-wheel brake assembly through another oil delivery pipe. The connecting rod mechanism drives the piston to move under the function of the brake pedal, allowing oil to leave the chamber through the first and second oil outlets. The handbrake oil inlet receives pressure from the handbrake pump, enabling the oil to leave the chamber through the first oil outlet.

Provided is a power tool. The power tool includes a housing, an electric motor, a battery pack, an eccentric rotation assembly, a working head, and a circuit board. The housing includes a motor housing extending along a first direction a, a grip extending along a second direction b, and an extension portion, where the extension portion is disposed at one end of the grip facing away from the motor housing, and an included angle m between the first direction a and the second direction b is greater than or equal to 80° and less than or equal to 150°. The electric motor is disposed inside the motor housing and includes a stator, a rotor, and a motor shaft. The battery pack is detachably mounted on the extension portion to provide electrical energy for driving the electric motor to rotate. The power tool is provided with the extension portion at one end of the housing facing away from the grip, and the battery pack is detachably mounted on the extension portion so that the battery pack is disposed detachably and externally.

A battery pack includes: a housing; multiple cells disposed in the housing; and a coupling portion configured to be coupled to an electrical device to transmit electrical energy. The coupling portion includes: a terminal assembly configured to be electrically coupled to the electrical device; and a support portion supporting at least the connection between the electrical device and the battery pack, where the support portion includes a support cavity and a reinforcing member accommodated in the support cavity, and the reinforcing member is an independent prefabricated member and is made of the same material as the housing.

A walk-behind working machine includes a traveling assembly, a working assembly, and a parking module. The traveling assembly includes a traveling wheel set and a traveling motor for driving the traveling wheel set. The traveling wheel set includes axles and wheels disposed on the axles. The working assembly includes a working attachment and a working motor for driving the working attachment. The parking module is configured to apply a braking force to the axle.

An electric power tool includes: a housing; a motor that rotates about a first axis to generate a driving force; an output shaft connected to a working attachment, where the output shaft is drivable by the motor to drive the working attachment to rotate; a shaft locking mechanism operable to lock the output shaft when the motor is stopped; and a switch assembly operable to start the motor, where when the switch assembly is operated to start the motor, an operation acting on the switch assembly can release locking of the shaft locking mechanism to the output shaft.

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A handheld cutting tool includes a housing (140); a motor (150) supported by the housing (140); a saw chain (160) driven by the motor (150) to implement a cutting function; a guide plate (170) for supporting and guiding the saw chain (160); and an oil tank (100c, 180) supported by the housing (140) and configured to store a lubricant to lubricate the saw chain (160) or the guide plate (170), where the oil tank (100c, 180) includes a tank body (181) formed with an oil injection port (182) and a cap (183) for sealing the oil injection port (182); and the tank body (181) is formed with a protrusion portion (184) capable of shielding at least part of the cap (183). According to the above technical solutions, the handheld cutting tool where the cap (183) and the oil injection port (182) mate with relatively good stability can be provided.