Mazda Motor Corporation

Mazda Motor Corporat Ion

Ryuji Nonaka

Tomohito Okuyama

Takakazu Yamane

Masanori Honda

Isamu Kizaki

Kouji Teramoto

Keiichi Okamoto

Toshiyuki Gendo

Ken Ueki

Eri Kaiki

Takehisa Kohira

Yuichi Sugimura

Noboru Shouno

Tomoya Yoshida

Taei Shibahara

Eiichi Kawase

Hideaki Fujii

Daisuke Nakayama

Takayoshi Nakamoto

Kaori Suzuki

Orie Tanaka

Kazuteru Tamai

Tomohiro Fujimoto

Kozo Odoi

Seiichi Omoto

Kazuhisa To

Chikara Tanaka

Tomoki Takahashi

Hisatoshi Kinoshita

Toshimine Morino

Motoki Yoshida

Shin Sasaki

Takashi Sasaki

Keisuke Kondou

Seiji Nakano

Masanori Ishikawa

Keisuke Yamakawa

Shuhei Narita

Junji Kishimoto

Katsumi Shiraishi

Hiroyuki Nagatomo

A multilayer coating film includes a lustrous layer containing a luster material and a blackish coloring agent, and a colored layer containing a reddish coloring agent, and having translucency. A slope of a tangent of a spectrum of a spectral transmittance, defined as an absolute value, of the colored layer at the wavelength of 620 nm is 0.02 nmor more and 0.06 nmor less, the spectral transmittance being obtainable by dividing a spectral reflectance measured for the colored layer stacked on the lustrous layer at the light receiving angle of 15° in the case of the light incident angle of 45°, by a spectral reflectance measured for the lustrous layer from which the colored layer is removed and a surface of which is therefore exposed, at the light receiving angle of 15° in the case of the light incident angle of 45°.

Multilayered coating film and coated article

A multilayer coating film includes a lustrous layer containing a luster material and a colored layer containing a reddish coloring agent, and having translucency. Regarding a Y value of an XYZ colorimetric system calibrated with a standard white plate, when a light incident angle is 45°, Y(5°) represents a Y value of reflected light measured at a light receiving angle of 5°, and Y(15°) represents a Y value of reflected light measured at a light receiving angle of 15°, the lustrous layer satisfies the following: Y(5°) is 30 or more to 700 or less; Y(15°)=k×Y(5°) (where k is a coefficient); and k is 0.01 or more to 0.3 or less. The concentration of the reddish coloring agent in the colored layer is 1 mass % or more to 17 mass % or less.

A vehicle roof structure is provided capable of maintaining side collision performance of a vehicle even without a roof reinforcing member. The vehicle roof structure includes an annular frame that is joined to a circumferential edge of a roof panel (which includes an outer panel and an inner panel), and supports the roof panel. The annular frame has a higher rigidity than the roof panel, is arranged in an opening of a roof, and is joined to a pair of roof side rails, a front header, and a rear header.

Vehicle roof structure

There are provided a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion. The vehicle-body frame member comprises a side sill, the front side door comprises a door panel portion provided with an inner lower portion which overlaps with the side sill in a vehicle wide view and reinforcement portions provided at three side-portions of a peripheral part of the door panel portion which are continuous and include the inner lower portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view.

Vehicle-body structure of vehicle

A vehicle-body structure of a vehicle comprises a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion, wherein the front side door comprises a door panel portion and reinforcement portions provided at a peripheral part of the door panel portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view, the reinforcement portions being made of a plate member.

A vehicle-body structure of a vehicle comprises a front side door provided so as to open and close an opening portion for entrance which is formed by a vehicle-body frame member. The front side door comprises a door panel portion and reinforcement portions provided at a peripheral part of the door panel portion such that at least part of the reinforcement portions overlaps with the vehicle-body frame member in a vehicle side view, the reinforcement portions being configured to reinforce the door panel portion such that when a collision load is inputted to the front side door in a vehicle side collision, a connection state of the door panel portion and the vehicle-body frame member is maintained.

A side door comprises a door panel portion and a reinforcement portion (a lower-side reinforcement portion and others). The door panel portion is provided to cover an opening portion for entrance and configured such that its peripheral part overlaps with an opening-portion-forming vehicle-body frame member (a side sill and others) in a vehicle side view. The reinforcement portion is provided at the peripheral part of the door panel portion such that it overlaps with the opening-portion-forming vehicle-body frame member in the vehicle side view, thereby reinforcing the peripheral part of the door panel portion against a collision load applied to the side door from a vehicle side. The reinforcement portion is provided at a portion of the peripheral part of the door panel portion which includes a part corresponding to the vehicle-width-direction-extending vehicle-body frame member (a first floor cross member and others).

There are provided a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion. The vehicle-body frame member comprises a side sill, the front side door comprises a door panel portion provided with an inner lower portion which overlaps with the side sill in a vehicle wide view and reinforcement portions provided at two side-portions of a peripheral part of the door panel portion which are continuous and include the inner lower portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view.

FF properties of a multilayer coating film configured to exhibit a warm color through a lustrous layer () and a translucent colored layer () are improved to achieve a metallic textured color having a high-quality color tone. The lustrous layer () is configured such that Y(10&#xb0;) is 50 or more and 950 or less and that Y(25&#xb0;) is 0.05 or more and 0.35 or less times the Y(10&#xb0;), where Y(10&#xb0;) represents a Y value, of an XYZ color system, of reflected light measured at a light receiving angle of 10&#xb0; and Y(25&#xb0;) represents a Y value of the reflected light measured at the light receiving angle of 25&#xb0; in a case where a light incident angle is 45&#xb0;. A concentration C of a warm color pigment of the colored layer () is 1% by mass or more and 17% by mass or less.

Multilayer coating film and coated article

FF properties of a multilayer coating film configured to exhibit a red color through a lustrous layer () and a translucent colored layer () are improved to achieve a metallic textured color having a high-quality color tone. The lustrous layer () is configured such that Y(10&#xb0;) is 50 or more and 950 or less and that Y(25&#xb0;) is 0.05 or more and 0.35 or less times the Y(10&#xb0;), where Y(10&#xb0;) represents a Y value, of an XYZ color system, of reflected light measured at a light receiving angle of 10&#xb0; and Y(25&#xb0;) represents a Y value of the reflected light measured at the light receiving angle of 25&#xb0; in a case where a light incident angle is 45&#xb0;. An inclination of a tangent to the spectrum of the spectral transmittance of the colored layer () at the wavelength of 620 nm is 0.012 nmor more and 0.03 nmor less, defined as an absolute value.

In order to increase road noise transmission loss, a double-wall panel includes a core material. The core material is enclosed between an outer wall and an inner wall facing each other, and has at least a predetermined thickness across the panel in all in-plane directions of the walls. The core material has a specific surface area of 20,000 (mm/cm) or more, where the specific surface area is defined as a surface area per unit volume.

Automotive panel structure

FF properties of a multilayer coating film configured to exhibit a warm color through a lustrous layer () and a translucent colored layer () are improved to achieve a metallic textured color having a high-quality color tone. The lustrous layer () contains, in a mixed state, a high-reflection flake () having a visible light reflectance of 90 % or more and a low-reflection flake () having a visible light reflectance that is half (i.e., &#xbd;) or smaller than the visible light reflectance of the high-reflection flake () as the luster material. When both of the high-reflection flake () and the low-reflection flake () are projected on a bottom of the lustrous layer (), a ratio of a projected area of the flakes () and () on the bottom of the lustrous layer () is 100 %.

A vehicle body structure of a vehicle includes a joint () formed by joining body parts such that the body parts overlap each other. The joint () includes a plurality of spot joints () and an adhesive joint (). An adhesive has a storage modulus in the range of 100 MPa to 800 MPa and a loss factor of 0.2 or more at a temperature of 20&#xb0; C. and an exciting force frequency of 60 Hz.

Vehicle body structure of vehicle

There is provided a door structure for a vehicle. The door structure comprises an upper door hinge; a lower door hinge; a door main body having an upper hinge mounting portion at which the door main body is mounted with the upper door hinge and a lower hinge mounting portion at which the door main body is mounted with the lower door hinge; an outer impact bar disposed in the door main body and extending in a longitudinal direction of the vehicle; an inner impact bar disposed in the door main body and extending in a longitudinal direction of the vehicle; and a connecting bracket connecting the front end of the outer impact bar and the front end of the inner impact bar to the upper hinge mounting portion of the door main body.

Door structure for vehicle

A sliding roof includes a light transmitting sliding sunroof and a light isolating sliding sunshade disposed beneath the sunroof. The light transmitting sliding sunroof opens a roof opening only while the light isolating sliding sunshade is in its open position. Also, the light isolating sliding sunshade closes the roof opening only while the light transmission sliding sunroof is in its closed position. Damage to the light isolating sliding sunshade, therefore, is prevented.

Growing community of inventors

Aki-gun, Japan

Ryuji Nonaka