(57) The invention refers to a backing pad (2) for a hand-guided polishing or sanding
power tool, comprising
- a support layer (4) made of a rigid material, the support layer (4) comprising a
connection element (6) on its top surface (8) for connection of the backing pad (2)
to a driving shaft (18) or an eccentric element of the polishing or sanding power
tool,
- a damping layer (10) made of a resilient material, the damping layer (10) being
fixedly attached to a bottom surface (12) of the support layer (4), and
- an adhesive layer (14) for releasable attachment of a polishing or sanding member
to the backing pad (2), the adhesive layer (14) being fixedly attached to a bottom
surface (16) of the damping layer (10),
wherein the bottom surface (12) of the support layer (4) is provided with reinforcement
elements (24, 26, 28; 46; 50, 52) for enhancing flexural rigidity of the support layer
(4), and the bottom surface (12) of the support layer (4) is further provided with
recesses (30) formed between and at least partially limited by the reinforcement elements
(24, 26, 28; 46; 50, 52),
It is suggested that the reinforcement elements comprise reinforcement ribs (24, 26,
28) comprising a plurality of polygonal geometric elements (36), each element (36)
having an essentially polygonal rib design and neighbouring elements (36) being located
next to each other and/or offset in respect to each other, wherein during manufacture
of the backing pad (2) the resilient material of the damping layer (10) enters into
the recesses (30) and after curing of the resilient material entirely fills the recesses
(30).
|
|
