Vehicle subframe

摘要

A vehicle subframe includes, at the bottom of a main body section, a lateral expansion section, a left vertical expansion section, a right vertical expansion section, and a concavity. The lateral expansion section joins a left front joining section and a right front joining section, and expands below the concavity. Of the left vertical expansion section, the front end is joined to the left end of the lateral expansion section, and the left vertical expansion section is inclined with a downward slope from the rear side of the main body section towards the front end. The right vertical expansion section is formed in a left-right symmetrical manner with respect to the left vertical expansion section, and the front end is joined to the lateral expansion section. The concavity is encircled by the vertical expansion sections and the lateral expansion section, and is formed in a concave shape facing upwards.

主权项

1. A vehicle subframe integrally formed by casting using a core, comprising:
a subframe body formed in a hollow shape by use of the core and including an upper section and a lower section spaced from each other in an up-down direction of the subframe by a predetermined distance; and left and right suspension support sections provided on left and right end portions, respectively, of the subframe body, the left and right suspension support sections respectively having left and right suspension arms connected thereto for supporting left and right suspensions, the left and right suspension support sections including left and right front connection sections, respectively, provided on front portions of an outer peripheral portion of the subframe body, and left and right rear connection sections provided on a rear outer peripheral portion of the subframe body, the lower section of the subframe body including:
a transverse protruding section interconnecting the left and right front connection sections and protruding downwardly;longitudinal protruding sections connected at respective front end portions thereof to the transverse protruding section, each of the longitudinal protruding sections slanting downward from a rear portion of the subframe body toward the front end portion; anda recessed section surrounded by the longitudinal protruding sections and the transverse protruding section, the recessed section being formed in an upwardly concave shape.