Hitachi Automotive Systems, Ltd.

Hiroshi Fukudome

Tsutomu Ito

Naofumi Harada

Kazuhisa Yama

Shogo Nambara

A balance weight includes a main weight portion extending over a range defined by a circular-arc circumferential edge centered at a rotational shaft hole side and a pair of virtual end surfaces located on the circular-arc circumferential edge on both sides of the rotational shaft hole, a pair of extension weight portions extending from the pair of virtual end surfaces to an opposite circular-arc side of the rotational shaft hole from the circular-arc circumferential edge, the rotational shaft hole provided at the main weight portion so as to be located on a central side of the circular-arc circumferential edge, a crank shaft attachment protrusion, a crank shaft hole provided at the crank shaft attachment protrusion radially eccentrically with respect to the rotational shaft hole, and a pair of spaces formed between positions on both sides of the crank shaft attachment protrusion and the pair of extension weight portions, respectively.

Reciprocating compressor

A bracket () has an annular portion () provided with a trapezoidal convex portion () extending from an inner peripheral edge (C) to outer peripheral edge (D) of the annular portion. The convex portion has a top region (A), an outer wall-side falling region (B), and an inner wall-side falling region (C). The annular portion and one vehicle body mounting portion () are connected to each other through a non-linear connecting portion (), and the annular portion and the other vehicle body mounting portion () are connected to each other through a non-linear connecting portion (). This structure makes it possible to increase the moment of inertia of area of the annular portion and to increase the flexural rigidity of the bracket. Further, it is possible to suppress a problem that the connecting portion () and the connecting portion () become nodes of vibration.

Vehicular pump apparatus and vehicular bracket

A fastening member includes a bolt and a nut for attaching a compressor to a vehicle body. A non-circular relative rotation prevention portion is formed below a head portion of the bolt. A washer is non-rotatably press fitted around the relative rotation prevention portion. Before the attachment, the head portion and the washer are temporarily fixed with a space generated therebetween. An elastic body, which is attached to the compressor, is disposed between the washer and the nut. A cylindrical member is provided at an inner circumference of the elastic body. As a result, when the nut is screwed, an axial force of the nut is transmitted to the washer via the cylindrical member, and the space between the washer and the head portion is reduced, completing the attachment.

Growing community of inventors

Sagamihara, Japan

Hiroshi Fukudome