A walk-behind lawnmower including a deck including a shroud, a front end portion, and a plurality of ribs coupled to the front end portion and defining a contact plane, a first motor, a rechargeable battery, and a blade rotatably driven by the first motor about a rotational axis, the blade having a tip defining a blade circle about the rotational axis. A radially inner surface of the shroud is disposed a first distance from a nearest point of the blade circle, the first distance being between 0.12 inches and 0.38 inches, a radially outer surface of the shroud is disposed a second distance from a nearest point of the blade circle, the second distance being between 0.5 inches and 0.75 inches, and the contact plane is disposed a third distance from a nearest point of the blade circle, the third distance being between 1.75 inches and 2.75 inches.

A walk-behind lawnmower includes a housing including a metal chassis, a handle coupled to the housing by support beams, a battery pack interface configured to receive a battery pack, a motor housed within the housing, a plurality of wheels attached to the housing, one or more cutting blades configured to be driven by the motor, and a skirt coupled to the metal chassis of the housing. The skirt is configured to provide a conductive path to discharge an electrostatic charge accumulated on the metal chassis.

Provided is electric power equipment that allows a battery to be installed and removed with ease. The electric power equipment (1) includes a main body (2) defining a battery receiving recess (40) having an open upper end, and a battery (20) configured to be received in the battery receiving recess, wherein an upper part of a front end part of the battery is provided with a projection (108) projecting in a forward direction, and a rear end part of the battery is provided with a grip, and wherein an upper edge of the front end part of the battery receiving recess is provided with a supporting surface (36) configured to support a lower surface of the projection at least when the battery is being removed from the battery receiving recess.

Provided is electric power equipment that allows a battery to be installed and removed with ease. The electric power equipment (1) includes a main body (2) defining a battery receiving recess (40) having an open upper end, and a battery (20) configured to be received in the battery receiving recess, wherein an upper part of a front end part of the battery is provided with a projection (108) projecting in a forward direction, and a rear end part of the battery is provided with a grip, and wherein an upper edge of the front end part of the battery receiving recess is provided with a supporting surface (36) configured to support a lower surface of the projection at least when the battery is being removed from the battery receiving recess.

A charging control system includes a lawn mower that has a battery and performs a lawn mowing work while traveling autonomously, and a charging station for charging the battery. The lawn mower includes a period calculator for calculating a shutoff period of supply power supplied from the charging station, and a first communication unit. The charging station includes a second communication unit communicating with the first communication unit, an information acquisition unit for acquiring shutoff period information indicating the shutoff period from the first communication unit via the second communication unit, a switch for shutting off the supply power, and a shutoff controller for controlling the operation of the switch. The shutoff controller releases the shutoff of the power supply to the lawn mower based on the shutoff period information.

The present invention relates to a control arrangement (1) for a self-propelled robotic lawnmower (3) having a cutting unit (5, 6) configured to rotate during operation of the lawnmower (3). The control arrangement (1) is configured to navigate the lawnmower (3) along a navigation path (7) comprising adjacent mowing strokes (S, Sp, Su). The control arrangement (1) is configured to set a rotation direction (rl, r2) of the cutting unit (5, 6) based on the navigation path (7), or is configured to select the navigation path (7) based on a rotation direction (rl, r2) of the cutting unit (5, 6). By adapting the rotation direction (rl, r2) or the navigation path (7), the direction (d1, d2) to which grass clippings are ejected, i.e. towards the previous mowing stroke (Sp) or to a future mowing stroke (Su) is controlled thereby reducing energy consumption or grass decomposition time.

Systems and techniques for detecting suboptimal mowing due to impacted vegetation and/or orientation changes are discussed. In some examples, blade speeds, blade heights, torques, and/or a current required to spin the blades of a mower at a determined rate may be calibrated and associated with a lawn mower and/or map. Changes in any one or more of the blade speed, current required, torque, etc. (and/or additional data from one or more sensors on the mower) may be used as an indication for determining whether vegetation has impacted the underside of a mower, whether the blade has struck an object, whether the mower is undergoing an orientation change, whether the mower requires maintenance, and the like. Based on the indication, the mower can perform one or more functions to attempt to remediate the problem autonomously and/or send a signal to a user for additional help.

Systems and techniques for detecting suboptimal mowing due to impacted vegetation and/or orientation changes are discussed. In some examples, blade speeds, blade heights, torques, and/or a current required to spin the blades of a mower at a determined rate may be calibrated and associated with a lawn mower and/or map. Changes in any one or more of the blade speed, current required, torque, etc. (and/or additional data from one or more sensors on the mower) may be used as an indication for determining whether vegetation has impacted the underside of a mower, whether the blade has struck an object, whether the mower is undergoing an orientation change, whether the mower requires maintenance, and the like. Based on the indication, the mower can perform one or more functions to attempt to remediate the problem autonomously and/or send a signal to a user for additional help.

A rear-moving, self-propelled working machine includes a main machine and a handle device. The main machine includes a moving assembly and a motor for driving the moving assembly. The handle device is connected to the main machine and includes an operation member, a connecting rod assembly, a housing, a sensing device, and a trigger assembly. The operation member includes a grip for a user to hold. The connecting rod assembly includes a first connecting rod connected to the main machine. The sensing device is used for sensing a thrust applied to the handle device to drive the rear-moving, self-propelled working machine. The trigger assembly is capable of applying a force to the sensing device when the grip receives the thrust. The trigger assembly is connected to the connecting rod assembly, and the sensing device is connected to the operation member.

A rear-moving, self-propelled working machine includes a main machine and a handle device. The main machine includes a moving assembly and a motor for driving the moving assembly. The handle device is connected to the main machine and includes an operation member, a connecting rod assembly, a housing, a sensing device, and a trigger assembly. The operation member includes a grip for a user to hold. The connecting rod assembly includes a first connecting rod connected to the main machine. The sensing device is used for sensing a thrust applied to the handle device to drive the rear-moving, self-propelled working machine. The trigger assembly is capable of applying a force to the sensing device when the grip receives the thrust. The trigger assembly is connected to the connecting rod assembly, and the sensing device is connected to the operation member.