Mazda Motor Corporation

Toyohiko Kobayashi

Tohru Mashimo

Hirotaka Takaya

Kazumoto Tanaka

Kohji Takada

Noboru Shono

Osamu Sato

A handle knob to conduct an opening/closing operation of a front door is provided on an outer-face side of an outer panel, and a handle base to pivotally support the handle knob is provided on an inner-face side of the outer panel. A beltline reinforcement to reinforce an beltline portion of the outer panel is provided on the inner-face side of the outer panel. The handle base is connected to the beltline reinforcement via an connecting portion. Thereby, the support rigidity of the handle base can be increased, thereby properly preventing the handle base from moving by an improper access.

Door structure of automotive vehicle

A drilling method of drilling an imaginary facing for excavating a curved tunnel such that the imaginary facing is nonparallel to an existing facing. The drilling method includes the steps of obtaining a first equation for transformation between a primary coordinate system defined with respect to the imaginary facing and a secondary coordinate system defined with respect to the existing facing, transforming a primary drilling pattern of the primary coordinate system into a secondary drilling pattern of the secondary coordinate system, obtaining a second equation for transformation between the secondary coordinate system and a final coordinate system defined with respect to a drilling vehicle, and transforming the secondary drilling pattern to a final drilling pattern of the final coordinate system.

Control method for drilling apparatus which makes use of a final

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Hiroshima, Japan

Toyohiko Kobayashi