公开(公告)号：US20240287974A1

公开(公告)日：2024-08-29

申请号：US18569380

申请日：2022-05-18

Applicant: Hitachi Astemo, Ltd.

Inventor： Junnosuke NAKATSUGAWA ,  Masaki KOYAMA ,  Hiroshi SAKAI ,  Kan KOBAYASHI ,  Yoshinori KAWAI

IPC: F04B17/03 ,  B60G11/27 ,  F25B31/02 ,  F25D11/02 ,  H02K33/16

CPC classification number: F04B17/03 ,  B60G11/27 ,  F25B31/023 ,  H02K33/16 ,  B60G2202/152 ,  F25D11/02

Abstract: A linear motor for a compressor having asymmetric load characteristics in both directions of a stroke, improves the service life of a bearing, and reduces a total length of a system. The linear motor includes a movable element having a magnetic pole frame and a plurality of field element poles, and a plurality of magnetic pole teeth around which windings are wound and that are provided so as to sandwich the movable element, and the movable element and the magnetic pole teeth are relatively displaced. The plurality of field element poles include primary magnets arranged between the plurality of magnetic pole teeth and secondary magnets arranged externally relative to spaces between the plurality of magnetic pole teeth in either direction of the relative displacement. A neck part of the magnetic pole frame connected to a bearing is arranged externally in the other direction of the relative displacement direction.

公开(公告)号：US20220032718A1

公开(公告)日：2022-02-03

申请号：US17276948

申请日：2019-09-18

Applicant: Hitachi Astemo, Ltd.

Inventor： Yoshinori KAWAI ,  Hiroshi SAKAI ,  Kan KOBAYASHI

IPC: B60G17/052 ,  B60G17/015

Abstract: An air suspension apparatus includes a compressor configured to compress air, a tank configured to store the air, a tank-side suction conduit configured to supply the compressed air in this tank to an intake side of the compressor, a tank conduit connecting a discharge side of the compressor and the tank, an air suspension connected to the discharge side of the compressor via an air drier, an intake electromagnetic valve provided in the tank-side suction conduit, a return electromagnetic valve provided in the tank conduit, and a discharge conduit provided so as to branch off from between the discharge side of the compressor and the air drier and configured to be connected to an atmosphere by opening a discharge electromagnetic valve.