公开(公告)号：US20190115817A1

公开(公告)日：2019-04-18

申请号：US16155907

申请日：2018-10-10

Applicant: ETEL S.A.

Inventor： Sean David Monaghan ,  Vivien Baverel

IPC: H02K41/03 ,  H02K3/47

CPC classification number: H02K41/033 ,  H02K1/17 ,  H02K1/34 ,  H02K3/47 ,  H02K29/03 ,  H02K41/031 ,  H02K2201/03 ,  H02K2213/12

Abstract: A secondary part, which defines a magnetic path for a primary part of a linear motor, includes a spacer element having a plurality of mounting points that, in an application, are configured to fasten the secondary part. Two yoke plates that form lateral sides are configured to be fastened to the spacer element such that the two yoke plates extend in mutual opposition, orthogonally to the magnetic path. The two yoke plates are configured to accommodate a plurality of permanent magnets on respective inner sides thereof. The two yoke plates have, on respective outer sides thereof, a reinforcing structure that is formed by a periodic variation of plate thickness in the direction of the magnetic path. Local minima of the reinforcing structure overlapping with the mounting points along the direction of the magnetic path.

公开(公告)号：US10804787B2

公开(公告)日：2020-10-13

申请号：US16155907

申请日：2018-10-10

Applicant: ETEL S.A.

Inventor： Sean David Monaghan ,  Vivien Baverel

IPC: H02K41/03 ,  H02K3/47 ,  H02K1/34 ,  H02K29/03 ,  H02K1/17

Abstract: A secondary part, which defines a magnetic path for a primary part of a linear motor, includes a spacer element having a plurality of mounting points that, in an application, are configured to fasten the secondary part. Two yoke plates that form lateral sides are configured to be fastened to the spacer element such that the two yoke plates extend in mutual opposition, orthogonally to the magnetic path. The two yoke plates are configured to accommodate a plurality of permanent magnets on respective inner sides thereof. The two yoke plates have, on respective outer sides thereof, a reinforcing structure that is formed by a periodic variation of plate thickness in the direction of the magnetic path. Local minima of the reinforcing structure overlapping with the mounting points along the direction of the magnetic path.