Abstract:
The present invention concerns a protection device (2; 102) for bush cutters comprising a guide rod (8), a head (10) provided with a rotatable cutting tool (12) that during rotation defines a substantially circular cutting plane (18), a motor suited to operate the cutting tool (12), wherein the protection device (2; 102) comprises a coupling (6; 106) suited to fix it to the bush cutter. The protection device (2; 102) is carried out as a guard (4; 104) with a substantially flat base surface that, when installed on the bush cutter, mainly extends along the axis of the rod (8) inclined by an angle (α) with respect to the cutting plane (18). Furthermore, the perimeter of the base surface describes, at least partially at the level of the radial portion and, in the axial direction (Y), at the level of the front perimeter portion of the cutting plane (18), an arc (β) that coincides with or slightly projects beyond the perimeter of the cutting plane (18), wherein the arc (β) is provided at least on part of its extension with a downward folded edge (16; 116) suited to cover the front perimeter portion of the cutting plane (18) in the axial direction (Y).
Abstract:
본 발명은 예초기의 칼날을 보호하며, 구동모터의 구동력에 의한 커버판의 파손을 방지할 수 있는 베어링유닛과 이를 이용한 예초기용 보호커버에 관한 것으로, 본 발명에 따른 예초기용 보호커버는 작업대에 설치되는 구동모터의 구동축에 설치되는 칼날을 보호하기 위한 것으로, 상기 칼날의 하부에 위치하도록 상기 구동축과 결합되는 베어링과, 상기 베어링과 결합되며 상기 칼날의 회전 직경보다 상대적으로 큰 직경을 갖도록 형성되어 상기 칼날을 보호하는 보호플레이트를 구비하는 커버부재와, 상기 보호플레이트가 상기 구동모터의 구동력에 의해 회전력을 받을 때, 소정각도 회전 가능하도록 상기 보호플레이트를 지지하는 플레이트 회전지지수단과, 상기 보호플레이트가 휘어져 상기 칼날과 충돌하는 것을 방지하도록 상기 칼날과 상기 보호플레이트 사이의 이격거리를 일정 거리 이상으로 유지시키는 간격유지부재를 구비한다. 본 발명에 따른 베어링유닛은 예초기의 칼날과 예초기용 보호커버의 호환성을 높일 수 있으며, 예초 작업 중 베어링으로 이물질이 유입되는 것을 효과적으로 차단함으로써 베어링의 파손에 의한 예초기용 보호커버의 수명이 단축되는 것을 방지할 수 있다.
Abstract:
A collapsible protective shield assembly for grass and weed trimmers can be mounted on conventional grass and weed trimmers to keep debris from reaching the operator. When open, the shield assembly can be adjusted to enable the trimmer to get into hard to reach places. When not in use, the shield assembly can be collapsed into a compact configuration for easy storage. The shield assembly is mounted on the trimmer shaft a sufficient distance away from the trimmer cutting head to allow unobstructed operation of the trimmer.
Abstract:
The blade guard for a lawn mower of the present invention can be easily engaged with a supporting bar in a body and stably installed on the surface of the land so as to cut grass evenly and safely. More particularly, the foldaway plant protection means formed on the upper portion of the cover facilitates protecting adjacent plants during the operation.
Abstract:
The invention concerns a cutting attachment for a lawn mowing device, in particular for a robotic lawn mower, comprising a motor whereof the driving shaft (6) is coupled to a rotary blade (2) perpendicular to said shaft and provided at its periphery with blades (1), and a lower protective plate (3) substantially parallel to, and located beneath the rotary blade (2). The bottom plate (3) is mounted freely on the rotary blade (2) pin (6) via a roller bearing (5) or the like. The bottom plate (3) periphery has substantially coplanar extensions or prongs (33), extending radially beyond the zone reachable by the blades (1). The inventive cutting attachment enables lawn mowing in the presence of golf balls.