Honda Motor Co., Ltd.

Kenichi Senda

Masayuki Fukutani

A gas turbine engine includes: a turbine wheel and a compressor wheel, coaxially configured and rotating integrally; a rotary shaft, including an outer shaft portion, a penetration portion, and an inner shaft portion; and a thrust cancel disc, provided between inner surfaces of the turbine wheel and the compressor wheel. The compressor wheel has a hollow portion through which the inner shaft portion passes. The turbine wheel has a first thread portion protruding from the inner surface, and at least one end portion of the inner shaft portion has a second thread portion. The thrust cancel disc is connected to the inner surfaces of the turbine wheel and the compressor wheel, respectively. A through hole is provided in a center of the thrust cancel disc, and the first thread portion or the end portion of the inner shaft portion with the second thread portion passes through the through hole.

Gas turbine engine

In a part-fastening structure, one of respective threads of a first nut member for fastening a first part and a second nut member for fastening a second part, is a right-hand thread, and the other is a left-hand thread. The members are connected together by a connecting member against relative rotation. Thus, rotation of the first member in its loosening direction acts in a direction of fastening the second member via the connecting member, and rotation of the second member in its loosening direction acts in a direction of fastening the first member via the connecting member, so that looseness of both the members is prevented, while reducing the number of locking parts to minimize an increase in an axial dimension.

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Wako, Japan

Kenichi Senda