公开(公告)号：US20190040930A1

公开(公告)日：2019-02-07

申请号：US16047617

申请日：2018-07-27

Applicant: MAZDA MOTOR CORPORATION

Inventor： Shintaro SHINBO ,  Seiji NAKANO ,  Kohji HASHIDA ,  Jumpei KAWAMOTO ,  Hiroaki ISHIZU ,  Masashi NOTOMI

IPC: F16F15/04

Abstract: Disclosed herein is an damping structure including a vibration energy damping member absorbing, from a vibration energy path member, at least part of noise vibration energy transmitted through the vibration energy path member, wherein a length of the vibration energy damping member is equal to or more than a half of a wavelength of the vibration of the vibration energy path member, and at least one attachment part attaching the vibration energy damping member to the vibration energy path member is disposed in a position corresponding to an antinode of the vibration of the vibration energy path member.

公开(公告)号：US20210214016A1

公开(公告)日：2021-07-15

申请号：US17054914

申请日：2019-06-14

Applicant: MAZDA MOTOR CORPORATION

Inventor： Hajime ITO ,  Hiroaki ISHIZU ,  Akiyoshi MASUDA ,  Shunsuke HIRAI ,  Yuuki SANO ,  Masashi NOTOMI ,  Takumi FUKUDA ,  Hidemitsu SHINHARA ,  Masahiro AWANE ,  Hidekazu SHIRAISHI ,  Yasuhiko NISHIDA ,  Takanori YOSHIDA ,  Ken YAMADA

IPC: B62D25/20 ,  B62D25/08

Abstract: Provided is a rear vehicle-body structure of a vehicle, capable of reducing vibrations transmitted from a rear wheel to a floor panel, while ensuring required performance for rear side frames and a cross member. The rear vehicle-body structure comprises a symmetric pair of frame members 6 extending in a vehicle longitudinal direction along respective lateral sides of a rear of a vehicle body of the vehicle, and a rear-side rear cross member 13 bridging the symmetric pair of frame members 6 in a vehicle width direction, wherein an attachment portion between each of the frame members 6 and the rear-side rear cross member 13 is provided with rigidity difference generation means 20 to generate a rigidity difference between the frame member 6 and the rear-side rear cross member 13.