BASE MEMBER WITH NUT PRESS-FIT PORTION

摘要

A nut press-fit portion (8) includes a bottom surface (12), inner peripheral wall surfaces (14), press-fit ribs (10), and contact parts (11). The bottom surface (12) is opposing to a press-fit direction. The inner peripheral wall surfaces (14) are generally parallel to the press-fit direction. The press-fit ribs (10) are protruded from the inner peripheral wall surfaces (14) and elongated along the press-fit direction so as to contact the peripheral surfaces of a press-fitted nut (7). The contact parts (11) are disposed above the bottom surface (12) so as to contact the press-fitted nut (7) from below. Furthermore, the contact parts (11) are disposed so as neither to interfere with shavings reachable regions (21) nor to overlap the shavings reachable regions (21) in the press-fit direction, the shavings reachable regions (21) being imaginary extensions of the press-fit ribs (10) in the direction of protrusion thereof from the inner peripheral wall surfaces (14).

主权项

1. A base body including a nut press-fit portion to which a nut is press-fitted in a press-fit direction, the nut press-fit portion comprising:
a bottom surface opposing to the press-fit direction; inner peripheral wall surfaces generally parallel to the press-fit direction; press-fit ribs protruded from the inner peripheral wall surfaces elongated along the press-fit direction so as to contact peripheral surfaces of the press-fitted nut; and contact parts arranged in an upstream side of the bottom surface in the press-fit direction so as to contact the press-fitted nut from an downstream side in the press-fit direction, wherein the contact parts are not disposed to positions that will overlap toward loca of the press-fit ribs in the press-fit direction, the loca being imaginary drawn by the press-fit ribs when the press-fit ribs are virtually moved along the protruding direction thereof to the opposing inner peripheral wall surface.