公开(公告)号：WO2011073773A1

公开(公告)日：2011-06-23

申请号：PCT/IB2010/003258

申请日：2010-12-15

Applicant: SERAFIN LUIGI & C. S.N.C ,  SERAFIN, Dennis

Inventor： SERAFIN, Dennis

IPC: A01D34/82 ,  A01D34/90

CPC classification number: A01D34/90 ,  A01D34/828

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 translation: 本发明涉及一种用于衬套切割器的保护装置（2; 102），其包括导杆（8），设置有可旋转切割工具（12）的头部（10），其在旋转期间限定基本上圆形的切割平面（18）， 适合于操作所述切割工具（12）的马达，其中所述保护装置（2; 102）包括适于将其固定到所述切刀的联轴器（6; 106）。 保护装置（2; 102）作为具有基本上平坦的基面的防护装置（4; 104）被执行，当安装在衬套上时主要沿着倾斜角度的杆（8）的轴线延伸 a）相对于切割平面（18）。 此外，基面的周边至少部分地在径​​向部分的水平面和在轴向方向（Y）上在切割平面（18）的前周边部分的高度处描绘出一个弧 ）与切割平面（18）的周边重合或稍微突出，其中弧形（ß）至少在其延伸部分上具有适于覆盖前周边部分的向下折叠边缘（16; 116） 的切割面（18）。