Mazda Motor Corporation

Molten Corporation

Mazda Motor Corporat Ion

Hiroki Kimura

Susumu Sano

Masaya Hiramatsu

Koji Miyamoto

Kenichi Yamamoto

Yasushi Ishikawa

Takayuki Nakamae

Hiroyuki Okamoto

Eiji Okada

Kazuhiro Okuyama

Tadashi Yoshimura

Haruaki Iseri

Hiromi Miwade

Takahiko Shigyo

Masayuki Mochizuki

Tomohiro Tuji

Ryo Ogawa

Naoki Kurata

Hiroto Kido

Atsushi Kawamoto

Yuuki Uchiba

Mitsuru Wakabayashi

Daisuke Kanamaru

Noriyuki Kawai

Naohiko Fukuda

Takahiro Kumagai

A joint structure increases fastening force between a first member and a second member while preventing peeling of an anti-rust coating film of the first member. The joint structure includes the first member in which the anti-rust coating film is formed by electrodeposition on a surface of a metallic base material; the second member that contacts the first member; and fastening members that fasten the first and second members together. Plural convex portions, each having a height less than a thickness of the electrodeposition coating film, are disposed in at least a part of a surface of the second member that contacts the first member. The first member and the second member are fastened by the fastening members such that the electrodeposition coating film of the first member and the convex portions mesh with each other without the base material of the first member contacting the convex portions.

Joint structure, method for designing joint structure, and method for manufacturing joint structure

The bushing includes an outer cylinder, an inner cylinder, and an elastic body therebetween. The outer cylinder has a central recess portion formed in a curved shape. The inner cylinder has a central convex portion being formed in a curved shape. A distance between a vertex of the central recess portion and the vertex of the central convex portion is smaller than a distance between a point other than the vertex of the central recess portion and a point at which a straight line extending from the point other than the vertex of the central recess portion to an intersection point of the perpendicular line and the axis of the inner cylinder intersects the central convex portion.

Bushing and vehicle suspension device

The bushing includes an outer cylinder, an inner cylinder, and an elastic body therebetween. The outer cylinder has a central recess portion recessed from the inner peripheral surface in the radial direction at the central portion in the axial direction, and the thickness of both end portions is thicker than the thickness of the central portion. The central recess portion is formed in a curved shape or having a curved and a straight shape. The inner cylinder has a central convex portion swelling from the outer peripheral surface in the radial direction at a position corresponding to the central recess portion. The maximum outer diameter of the central convex portion is larger than the minimum inner diameter of the inner peripheral surface of the outer cylinder.

A fragile portion is provided at a portion of a suspension arm which is positioned near a vehicle-body attachment portion. The fragile portion is configured such that when a load which is greater than a specified magnitude is inputted to a front wheel from a vehicle forward side, the suspension arm is bent at the fragile portion, whereby the front wheel is rotated rearwardly around the fragile portion.

Vehicle and suspension arm

Growing community of inventors

Hiroshima, Japan

Hiroki Kimura