Title:
EXCITING MACHINE WITH SAFETY DEVICE
Document Type and Number:
Japanese Patent JPH1189206
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an exciting machine with safety device which is compact, does not produce much noise, and can be manufactured at a low cost and the amplitude of which can be prevented from becoming excessively large, by incorporating a plurality of permanent magnets into the machine. SOLUTION: An exciting machine is constituted in such a way that a substrate and a top plate 18 are coupled with each other through a link mechanism, and a first permanent magnet 30 is attached to the substrate in such a way that the magnet 30 can slide in the horizontal direction. Then, a second permanent magnet 32 is fixed to the top plate 18 in such a way that magnetic poles of the magnet 32 are faced oppositely to the magnetic poles of the same polarities of the magnet 30. The first magnet 30 is driven by means of a driving source 28, and the load applied to the top plate 18 is supported by a load supporting means. Then, the top plate 18 is vibrated in the vertical direction by changing the facing area of the first magnet 30 to the second magnet 32 by periodically and reciprocatively moving the magnet 30 against the magnet 32, and, at the same time, the vibration of the top plate 18 is inhibited when the amplitude of the plate 18 exceeds a prescribed value.
Inventors:
SAKAMOTO YUTAKA
Application Number:
JP24250197A
Publication Date:
March 30, 1999
Filing Date:
September 08, 1997
Export Citation:
Assignee:
DELTA TOOLING KK
International Classes:
G01M7/02; B06B1/12; G05D19/02; H02K33/00; (IPC1-7): H02K33/00; B06B1/12; G01M7/02; G05D19/02
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)