Japan Aviation Electronics Industry, Limited

Hitachi Construction Machinery Co., Ltd.

Kosuke Matsuo

Atsushi Tanaka

Shinichiro Nakajima

Satoru Kaneko

Seiji Ishida

Masatoshi Yoshimura

Toshihiko Watanabe

Kazuo Nishihama

Tokuma Ikegami

Junya Sato

Ryosuke Mitsui

Atsushi Kira

An object of the present invention is to provide a drive system for a dump truck capable of suppressing increase in size of a converter that controls a two-winding induction generator. To this end, the drive system for a dump truck includes a DC-DC converter connected to a main side DC bus and an auxiliary side DC bus, and a controller controls the DC-DC converter such that electric power of the main side DC bus is supplied to the auxiliary side DC bus via the DC-DC converter.

Drive system for dump truck

It is an object of the present invention to provide a drive system including an induction generator comprising some primary windings that has a main winding and an auxiliary winding, the drive system being capable of supplying electric power required by an auxiliary inverter, even in a regenerative mode of operation in which only the auxiliary winding is energized. The maximum current value of a converter for power generating is set on the basis of the maximum output power of the auxiliary winding of the induction generator and the minimum voltage applied to the auxiliary winding unless a traction inverter is in a regenerative mode of operation, and the non-load current value of the induction generator is set such that the maximum current in the auxiliary winding under the situation of the traction inverter being in the regenerative mode of operation does not exceed the maximum current in the converter for power generating.

Drive system

In a mounting structure in which an electronic component is mounted on a wiring board, a wiring sheet including an adhesive layer interposes between the electronic component and the wiring board and the electronic component is indirectly mounted on the wiring board. The electronic component is directly mounted on the adhesive layer of the wiring sheet and the adhesive layer of the wiring sheet is directly fitted to the wiring board. Conduction between the electronic component and the wiring board is attained by conduction between the electronic component and the wiring sheet and conduction between the wiring sheet and the wiring board.

Method for manufacturing mounting structure for electronic component, mounting structure for electronic component, electronic module, and wiring sheet

A connector assembly of the present invention includes a first connector having a first electrical-connection member arranged on a base member, and a second connector having a second electrical-connection member arranged on a base member at a position opposite that of the first electrical-connection member. The first connector and the second connector further include engagement members at positions opposite each other. The first electrical-connection member includes an elastic protrusion and a first electrode arranged at a tip of the protrusion. The second electric-connection member includes a recess and a second electrode arranged at a bottom of the recess. At least one of the base member of the first connector and the base member of the second connector has flexibility. When the engagement members engage, the first electrode and the second electrode are brought into contact, and the protrusion and the recess are brought into contact.

Water-resistant electrical connector assembly

A connector assembly of the present invention includes a first connector having a first electrical-connection member disposed on a flexible base member, and a second connector having a second electrical-connection member disposed on a flexible base member at a position opposite that of the first electrical-connection member. The second connector further includes a flexible cover section, a flexible coupling section, and a plurality of resin fasteners. The coupling section couples the base member of the second connector with the cover section. The resin fasteners are disposed at opposite positions respectively for the base member of the second connector and the cover section. The connector assembly has a structure in which the fasteners are engaged and the first electrical on member and the second electrical-connection member are connected, with the first connector being sandwiched by the base member of the second connector and the cover section.

Connector assembly

A connector assembly includes a first connector that has first electrical connection members arranged on a base material made of resin and a second connector that has second electrical connection members on positions respectively opposed to the first electrical connection members on a base material made of resin. The first connector and the second connector further have fasteners, which are made of resin and are engageable, on mutually-opposed positions, and may have seal members or water repellent treatment members. In a case where seal members and water repellent treatment members are not provided, the fasteners form a polygonal shape surrounding the first electrical connection members or the second electrical connection members, and in a case where seal members or water repellent treatment members are provided, the fasteners and the seal members or the water repellent treatment members surround the first electrical connection members or the second electrical connection members.

Growing community of inventors

Tokyo, Japan

Kosuke Matsuo