Patent ID: 11915865
Assignee: SHIMADZU CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC H

Claim 0:
1. A mass spectrometer comprising a drive device for driving a movable portion, the drive device comprising:
a vacuum chamber;
a sample stage provided in the vacuum chamber;
a rail that holds the movable portion to be slidable;
a movable-side magnet provided to the movable portion provided in the vacuum chamber; and
a drive unit that is provided outside the vacuum chamber, and drives the movable portion by exerting magnetic force on the movable-side magnet,
wherein the drive unit has
a first magnet that exerts magnetic force of attracting the movable-side magnet,
a second magnet that is provided to be adjacent to the first magnet, and exerts magnetic force of repelling the movable-side magnet, and
a moving mechanism that integrally moves the first magnet and the second magnet,
wherein the sample stage is connected to the movable portion.