Abstract: A hinge device includes a bearing seat, a spherical joint, a plurality of positioning pins, and a retaining ring. The bearing seat has a containing recess. The spherical joint is rotatably disposed in the containing recess, and the surface of the spherical joint has a plurality of positioning holes. The positioning pins are disposed at the bearing seat and capable of sliding toward or away from the spherical joint. The positioning pins correspond to parts of the positioning holes respectively when the spherical joint rotates to a specific position relative to the bearing seat. The retaining ring is disposed at an opening of the containing recess of the bearing seat and surrounds the positioning pins, the retaining ring is against the positioning pins to allow the positioning pins to be fastened in the corresponding positioning holes when the spherical joint rotates to the specific position relative to the bearing seat.

Abstract: A hinge device includes a bearing seat, a spherical joint, a plurality of positioning pins, and a retaining ring. The bearing seat has a containing recess. The spherical joint is rotatably disposed in the containing recess, and the surface of the spherical joint has a plurality of positioning holes. The positioning pins are disposed at the bearing seat and capable of sliding toward or away from the spherical joint. The positioning pins correspond to parts of the positioning holes respectively when the spherical joint rotates to a specific position relative to the bearing seat. The retaining ring is disposed at an opening of the containing recess of the bearing seat and surrounds the positioning pins, the retaining ring is against the positioning pins to allow the positioning pins to be fastened in the corresponding positioning holes when the spherical joint rotates to the specific position relative to the bearing seat.

Abstract: A composite material member including a rubber element and a composite fiber element is manufactured by integrally combining rubber and composite fiber. A method for manufacturing the composite material member is also provided. In this method, the composite fiber element whether being thermosetting or not is disposed in a first mold of a mold. The composite fiber element is a structure of at least one fiber layer wrapped with resin. The first mold and a second mold of the mold are then closed. Finally, the cavity is filled with rubber. Different forming environments are provided according to whether the composite fiber element is thermosetting or not to form and fix the rubber element on the resin of the composite fiber element.