Toyota Jidosha Kabushiki Kaisha

Akinori Goto

Atsushi Honda

Akiko Nishimine

Shotaro Kato

Yu Miyahara

Fusahiro Tsukano

Yuya Takahashi

Shingo Aijima

Hiroshi Takekawa

Ayato Noumori

Satoru Ishikawa

A soundproofing device for a transmission according to the present disclosure is provided to transmit the power of one or more prime movers (for example, internal combustion engine and electric motor). The soundproofing device includes a Helmholtz resonator including: a wall that forms a Helmholtz resonance chamber; and an opening formed in the wall so as to cause the Helmholtz resonance chamber to communicate with the outside of the Helmholtz resonance chamber. The wall includes a transmission case that accommodates the transmission and a housing of a component mounted on the transmission (for example, PCU housing). The Helmholtz resonance chamber is formed between the transmission case and the housing.

Soundproofing device for transmission

A vehicle casing includes a metal frame and a resin cover that covers the metal frame. The resin cover accommodates vehicle components inside the metal frame. The metal frame includes a bearing supporting boss portion that rotatably supports, inside the resin cover, a shaft member that is one of the vehicle components and rotates about a shaft center, and a mount boss portion that is for fixing the vehicle casing to a vehicle body. The bearing supporting boss portion is disposed at a position separate from an inner surface of the resin cover. The resin cover is disposed to cover the entire metal frame except a portion provided with the mount boss portion.

Vehicle casing

Growing community of inventors

Shizuoka-ken, Japan

Akinori Goto