Nidec Corporation

Toyota Jidosha Kabushiki Kaisha

Akira Otagaki

Yoshio Fujii

Yosuke Yamada

Tatsuhiko Mizutani

A connector includes a main body supporting a power cable, and a sound-proof member attached by a bolt to the top surface of the main body identified as the sound emitting surface to absorb sound emitted from the main body due to vibration. The main body includes a base provided with bulges in which three power cables are accommodated, respectively, and a lid over the base with power cables accommodated. The sound-proof member is effective as long as it is attached to the side face of the lid where it is expected to readily emit noise, i.e., on one side. The sound proof member can be also attached to the side face of the base. A connector having sound generated from the connector caused by vibration reduced is provided.

Connector

A magnet () that is an annular member is fixed or secured on an outer circumference surface or an inner circumference surface of a yoke () that is a cylindrical member. An lower end surface in the axial direction of the magnet is fixed or secured to the same plane as a lower end surface in the axial direction of the yoke (), or the lower end surface in the axial direction of the magnet is fixed or secured so as to protrude a little from the lower end surface in the axial direction of the yoke. An annular groove () that is recessed outward in the radial direction or inward in the radial direction is formed on a part of the outer circumference surface or the inner circumference surface that is continuous to the yoke ().

Method for manufacturing cylindrical members and method for manufacturing motors having the cylindrical member

A stator core stack formed by laminating a plurality of straight cores having a core back, a tooth, and a linking part for linking the core backs. In the stator core stack, the linking portion is folded and deformed the linking portion so as to join an end surfaces of the straight core, and a core back outer peripheral portion is formed at the back side of the core back, and the diameter of the core back outer peripheral portion is formed same as or shorter than the diameter of the inner peripheral surface of the housing, and is disposed in the housing. A bar-like member is press-fitted in the axial direction between both the end surfaces of the straight core. In other example of motor, an engaging portion extending in the axial direction and projecting in the radial inward direction is formed in the inner peripheral surface of the housing, and the end surfaces of the straight core are engaged or fitted with the engaging portion.

Growing community of inventors

Toyota, Japan

Akira Otagaki