Hitachi, Ltd.

Seijiro Todori

Yoshihiko Ina

Takeshi Tanaka

Takeshi Kawasaki

Hidekazu Nakamoto

Minoru Tanaka

Masaki Yono

Nobuaki Mizuguchi

Shinya Mitsudomi

Syu Nakaigawa

To obtain a wide passenger compartment space, the thickness of a heat insulating acoustical layer is reduced, and for this purpose, a comfortable in-car environment is obtained by using a vacuum insulating panel which combines high heat insulating performance and sound insulating performance. A heat insulating acoustical layeris formed on one surface of a lightweight alloy structureof double skin construction by using a vacuum insulating panelas a middle member and sandwiching two surfaces of the panel with elastic sound absorbing materialsmade of a nonwoven fabric or a foamed body, and the heat insulating acoustical layer is covered with an interior materialOwing to this construction, the transmission loss of a noise which transmits from the double skin structure side is improved by the mutual actions of the elasticity of the sound absorbing material and the rigidity of the vacuum heat insulating panel.

Heat insulating acoustical structure and carbody shell structure using the same

This invention relates to a system for mounting an underfloor electronic equipment to a rolling stock body having an underfloor storage portion formed under the floor in the longitudinal direction of the body as a portion of the body. The underfloor storage portion comprises a guidance tool for guiding and supporting the underfloor electronic equipment formed as a unit, a body-side connector corresponding to an electronic equipment-side connector formed to the electronic equipment, and a fixing tool for fixing the electronic equipment to the underfloor storage portion. The underfloor electronic equipment comprises a moving means guided by the guidance tool and the electronic equipment-side connector corresponding to the body-side connector. The electronic equipment can be moved by the guidance tool between a fixing position within the storage portion and a removal position outside the storage portion, the fixing tool used to fix the equipment to the fixing position where the equipment is electrically connected. The present invention facilitates maintenance and replacement of the electronic equipments and shortens operation time.

System for mounting an underfloor electronic equipment

Car body

In a construction of a car structure wherein a plurality of strength members each formed with an outdoor-side flange and an indoor-side flange are connected together and an outer plate member is connected to the outdoor-side flanges of the strength members, a joint member is provided which joint member includes outdoor-side and indoor-side flanges of the strength members and a web continuously connecting the flanges together three-dimensionally. The use of the joint member for connecting the strength members together facilitates production of the car structure and increases strength thereof.

Construction of car structure

Growing community of inventors

Hikari, Japan

Seijiro Todori