Vehicle linear motor

Patent metadata

Field	Value
Publication number	US-11264884-B2
Application number	US-201716087840-A
Country	US
Kind code	B2
Filing date	May 23, 2017
Priority date	May 26, 2016
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A vehicle linear motor includes: a tubular casing; a pair of armatures placed and fixed in the casing; a mover formed in a flat plate shape and placed to face the pair of armatures and to be movable in the casing; and a support member configured to slidably support the mover such that the mover moves in a longitudinal direction of the mover. The mover formed in the flat plate shape includes a plurality of magnets that are arranged at intervals in the longitudinal direction. Each of the pair of armatures has a magnetic pole that is arranged to move the mover relative to the armatures in the longitudinal direction. The casing is mounted on a vehicle such that the longitudinal direction is a horizontal direction, and the mover and the armatures are placed to face each other in the horizontal direction.

First claim

The invention claimed is:

1. A vehicle compressor for mounting on a vehicle, the vehicle compressor comprising:
a tubular casing;
a pair of armatures placed and fixed in the tubular casing;
a mover formed in a flat plate shape and placed to face each of the pair of armatures and to be movable in the tubular casing;
a support member disposed in the tubular casing and configured to slidably support the mover such that the mover moves in a longitudinal direction of the mover;
a compression portion including a piston connected with the mover and configured to reciprocate and a cylinder configured to slidably contain the piston therein and form a compression chamber; and
an air dryer connected with a discharge side of the compression chamber and having an inside filled with a desiccant,
wherein:
the air dryer is placed on an axis in a moving direction of the mover and the piston;
the compression portion and the air dryer are arranged such that a center axis of the compression portion and a center axis of the air dryer are aligned;
the mover includes a plurality of magnets that are arranged at intervals in the longitudinal direction of the mover;
each of the pair of armatures has a magnetic pole at a position facing the mover;
the tubular casing is configured to be mounted on the vehicle such that the longitudinal direction of the mover is a horizontal direction of the vehicle; and
the mover is placed such that a plate width direction of the mover is a direction configured to be orthogonal to a horizontal plane of the vehicle.

2. The vehicle compressor according to claim 1 , wherein the pair of armatures are arranged such that the mover is placed therebetween and configured to be in a left-right direction of the vehicle.

3. The vehicle compressor according to claim 1 , wherein the pair of armatures are arranged such that the mover is placed therebetween and configured to be in a front-rear direction of the vehicle.

4. The vehicle compressor according to claim 1 , wherein:
the flat plate shape is a rectangular flat plate shape that is elongated and has a plate thickness;
the pair of armatures are arranged such that the mover is placed therebetween in a plate thickness direction; and
magnetic gaps are configured to be formed in either a left-right direction of the vehicle or a front-rear direction of the vehicle between the mover and the pair of armatures.

5. The vehicle compressor according to claim 1 , wherein the piston includes an intake valve configured to supply air to the compression portion.

6. The vehicle compressor according to claim 1 , wherein:
the mover includes a yoke formed in a flat plate shape and a plurality of flat plate permanent magnets placed on a surface and a rear face of the yoke; and
the plurality of flat plate permanent magnets are arranged at intervals in the longitudinal direction of the mover.

Assignees

• Hitachi Automotive Systems Ltd
• Hitachi Astemo Ltd

Inventors

• Kawai Yoshinori
• Kobayashi Kan
• Chikuma Hiroshi
• Mizukoshi Aya

Classifications

• H02K41/03

  Synchronous motors; Motors moving step by step; Reluctance motors (H02K41/035 takes precedence) · CPC title

• B60L1/003

  to auxiliary motors, e.g. for pumps, compressors · CPC title

• H02K55/02 Primary

  of the synchronous type · CPC title

• Y02T10/64

  Electric machine technologies in electromobility · CPC title

• H02K9/26

  Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters · CPC title