Fiber reinforcement for making an elongate mechanical part out of composite material

摘要

The invention relates to fiber reinforcement for making an elongate mechanical part (10) out of composite material having a lug (14) at at least one end for receiving a pin for making a pivot connection with another part, the fiber reinforcement being made from a central fiber structure (106; 106′) for forming a core that is obtained by three-dimensional weaving, from a peripheral fiber structure (16; 16′) that is to form a belt surrounding the central structure so as to form at least one empty cylindrical space in the lug of the part, and from at least one annular fiber structure (112; 112′; 112″) that is to form a ring that is formed inside the empty space provided between the central structure and the peripheral structure.

主权项

1. A fiber reinforcement for making an elongate mechanical part out of composite material having at least one lug at least one end of the part for a purpose of receiving a pin in order to make a pivot connection with another part, the fiber reinforcement comprising:
a central fiber structure to form a core that is obtained by three-dimensional weaving; a peripheral fiber structure to form a belt that surrounds the central structure so as to arrange at least one empty cylindrical space at the lug; and at least one annular fiber structure to form a ring that is formed inside the empty space arranged between the central structure and the peripheral structure; wherein the peripheral structure and the annular structure form a single structure and are obtained by three-dimensionally weaving a fiber blank as a single piece with:
a main portion in the form of a strip that extends in a direction corresponding to a longitudinal direction of the core to be fabricated; andtwo secondary portions, each connected to the main portion, and the two secondary portions including a zone of non-interlinking in order to form two longitudinal tongues that are foldable towards each other in order to form the ring.