Title:
VIBRATION TESTING MACHINE
Document Type and Number:
Japanese Patent JP3892362
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To provide a vibration testing machine provided with an over-travel detecting mechanism that is reduced in the number of used parts and improved further in reliability.
SOLUTION: This vibration testing machine is provided with an insulating base member 6 fixed to its main body 5, a conductive U-shaped plate spring member 7 having two leg sections 72 and 72 which are fixed to the base member 6 at a prescribed interval in the vibrating direction of a mobile section 2, and contact members 9 which are provided on the base member 6 between the leg sections 72 and respectively energized by the leg sections 72. This detecting mechanism is also provided with an over-travel detecting circuit 31 which detects the non-contacting states between the leg sections 72 and the contact members 9 corresponding to the sections 72 and outputs detect signals, and a control section 3 which controls the vibration of the mobile section 2 based on the input of the detect signals. When the displacement amount of the mobile section 2 exceeds a prescribed value, a protruded section 21 protruded from the mobile section 2 and arranged between the leg sections 72 comes into contact with the leg sections 72 so as to release the leg sections 72 and contact members 9 from each other.
Inventors:
Ito, Masaaki
Shibata, Takahisa
Shibata, Takahisa
Application Number:
JP2002000228621
Publication Date:
December 15, 2006
Filing Date:
August 06, 2002
Export Citation:
Assignee:
AKASHI CORP
International Classes:
G01M7/02; G01M7/00; (IPC1-7): G01M7/02