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JPS57137738A - Vibration-damping device for column - Google Patents

Vibration-damping device for column

Info

Publication number
JPS57137738A
JPS57137738A JP2150081A JP2150081A JPS57137738A JP S57137738 A JPS57137738 A JP S57137738A JP 2150081 A JP2150081 A JP 2150081A JP 2150081 A JP2150081 A JP 2150081A JP S57137738 A JPS57137738 A JP S57137738A
Authority
JP
Japan
Prior art keywords
column
magnets
conductors
free end
magnetic body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2150081A
Other languages
Japanese (ja)
Inventor
Toshifumi Iseya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2150081A priority Critical patent/JPS57137738A/en
Publication of JPS57137738A publication Critical patent/JPS57137738A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
    • F16F15/035—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means by use of eddy or induced-current damping

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

PURPOSE:To enhance durability by a construction wherein the first magnetic body is provided at the tip of a free end of a column fixed at one end and the second magnetic body is suspended by a coil spring provided for the column, with a gap between the first and the second magnetic body, so that the two magnetic bodies are attracted by each other. CONSTITUTION:The first permanent magnet 7 embedded in an electrical conductor 6 is provided at the free end of the column 2, and the second permanent magnet 9 embedded in an electrical conductor 6 is suspended at such a position as to face the first magnet 7 by a coil spring 3, with a gap between the magnets 7, 9. The magnets 7, 9 are so positioned that their poles of different polarities are faced to each other to produce an attracting force. Accordingly, even when the free end is vibrated by an external force such as seismic forces, the phase difference between the movements of the magnets 7, 9 produces changes in the magnetic flux densities in the conductors 6, 8 so that eddy currents are generated in the conductors 6, 8 to prevent the conductors from contacting, thus resulting in a vibration-damping effect.
JP2150081A 1981-02-18 1981-02-18 Vibration-damping device for column Pending JPS57137738A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2150081A JPS57137738A (en) 1981-02-18 1981-02-18 Vibration-damping device for column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2150081A JPS57137738A (en) 1981-02-18 1981-02-18 Vibration-damping device for column

Publications (1)

Publication Number Publication Date
JPS57137738A true JPS57137738A (en) 1982-08-25

Family

ID=12056682

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2150081A Pending JPS57137738A (en) 1981-02-18 1981-02-18 Vibration-damping device for column

Country Status (1)

Country Link
JP (1) JPS57137738A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4725046A (en) * 1983-03-22 1988-02-16 Nissan Motor Co., Ltd. Engine mount
US4938325A (en) * 1986-01-09 1990-07-03 Shinko Electric Co., Ltd. Vibration damping apparatus for pulse motor
CN107762229A (en) * 2017-11-21 2018-03-06 山东大学 The current vortex dissipative damping device of controlled level and torsional direction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4725046A (en) * 1983-03-22 1988-02-16 Nissan Motor Co., Ltd. Engine mount
US4938325A (en) * 1986-01-09 1990-07-03 Shinko Electric Co., Ltd. Vibration damping apparatus for pulse motor
CN107762229A (en) * 2017-11-21 2018-03-06 山东大学 The current vortex dissipative damping device of controlled level and torsional direction

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