The string trimmer includes a connecting rod, a string trimmer head, and an operation part. The string trimmer head includes a trimmer line, a spool, a housing, and a streamlined protection structure. The spool is configured to wind the trimmer line and is capable of rotating about a first axis. The housing has an accommodating cavity for accommodating at least part of the spool and a threading hole for the trimmer line to extend to an outer side of the housing. The protection structure includes a head, a tail and a passage through which the trimmer line penetrates. The head is connected to the housing, the tail extends on the outer side of the housing, and the passage is configured to accommodate the trimmer line penetrating through the threading hole and expose the trimmer line out of the tail of the protection structure.

The string trimmer includes a connecting rod, a string trimmer head, and an operation part. The string trimmer head includes a trimmer line, a spool, a housing, and a streamlined protection structure. The spool is configured to wind the trimmer line and is capable of rotating about a first axis. The housing has an accommodating cavity for accommodating at least part of the spool and a threading hole for the trimmer line to extend to an outer side of the housing. The protection structure includes a head, a tail and a passage through which the trimmer line penetrates. The head is connected to the housing, the tail extends on the outer side of the housing, and the passage is configured to accommodate the trimmer line penetrating through the threading hole and expose the trimmer line out of the tail of the protection structure.

A grass cutting head includes a spool for winding a grass cutting line, a head housing for accommodating the spool, a first guiding structure disposed at least partially in the head housing, and a second guiding structure formed on the spool. The first guiding structure guides the grass cutting line through the head housing when threading the grass cutting line. The second guiding structure guides the grass cutting line to move and be wound around the spool by relative motion created between the spool and the head housing. The head housing includes a first housing and a second housing. The first guiding structure is disposed at least partially in the first housing. The spool is disposed between the first housing and the second housing. The first housing or the second housing is provided with an outer threading hole for allowing the grass cutting line to pass in or out.

A grass cutting head includes a spool for winding a grass cutting line, a head housing for accommodating the spool, a first guiding structure disposed at least partially in the head housing, and a second guiding structure formed on the spool. The first guiding structure guides the grass cutting line through the head housing when threading the grass cutting line. The second guiding structure guides the grass cutting line to move and be wound around the spool by relative motion created between the spool and the head housing. The head housing includes a first housing and a second housing. The first guiding structure is disposed at least partially in the first housing. The spool is disposed between the first housing and the second housing. The first housing or the second housing is provided with an outer threading hole for allowing the grass cutting line to pass in or out.

A handheld lawn maintenance tool having a power head to which an adapter is attachable to allow both battery-powered and gasoline-powered working attachments to be attached thereto. The power head includes a power source, integrated first and second handles, a power generator, and a first attachment mechanism to which the adapter and/or working attachments are attachable.

A handheld lawn maintenance tool having a power head to which an adapter is attachable to allow both battery-powered and gasoline-powered working attachments to be attached thereto. The power head includes a power source, integrated first and second handles, a power generator, and a first attachment mechanism to which the adapter and/or working attachments are attachable.

A garden and/or forestry system has a hand-held gardening and/or forestry processing apparatus, and an assistance device, which is formed separately from the gardening and/or forestry processing apparatus and which is designed to support a user in operation of the gardening and/or forestry processing apparatus. The assistance device has a user interface, by which the assistance device is controllable by user inputs. The hand-held gardening and/or forestry processing apparatus has a user-actuable operator control element for user inputs to the user interface.

A power tool (1) is disclosed comprising a tool (3),a power source (5) arranged to power the tool (3),a throttle lever (7),a circuit board (9),and a human machine interface (10) comprising components (15, 17, 19) arranged on the circuit board (9). The power tool (1) further comprises a magnet (11) operably connected to the throttle lever (7), and a sensor arrangement (13) configured to sense the intensity of the magnetic field of the magnet (11). The sensor arrangement (13) is arranged on the circuit board (9).

An electric working machine and method for assembling the same that do not require specific jigs, so as to facilitate assembling work and reduce man-hours and production cost. A motor assembly is relatively inserted into a body casing, with a mounting base disposed behind a partitioning wall portion allowing a tubular fixture to project through an insertion hole toward the front of the partitioning wall portion, and a temporarily securing mechanism temporarily secures the motor assembly to retain the position of the motor assembly by automatically moving it in rotating and two orthogonal directions on a plane along the partitioning wall portion, so as to coaxially arrange the tubular fixture and insertion hole, and through-hole and screw hole of the mounting base for screwing the bolt. In such a temporarily secured state, the motor assembly is finally secured by screwing the bolt through the through-hole into the screw hole of the mounting base.

A string trimmer includes: a string trimmer head; a drive device including a motor for driving the string trimmer head to rotate about a first axis; an operating device including a first housing for connecting a power supply device to supply power to the motor; and a connecting device for connecting the drive device to the operating device. The first housing is formed with an arm rest portion to be rested on, a coupling portion for coupling the power supply device, and a connecting portion connected to the connecting device; where the arm rest portion is disposed behind the connecting portion and configured to be squeezable by an arm when the string trimmer is operated; and an air inlet is disposed between the coupling portion and the connecting portion, where the air inlet communicates with the inside of the first housing.