JPS6467835A - Overheat preventing device for motor - Google Patents

Overheat preventing device for motor

Info

Publication number
JPS6467835A
JPS6467835A JP22390987A JP22390987A JPS6467835A JP S6467835 A JPS6467835 A JP S6467835A JP 22390987 A JP22390987 A JP 22390987A JP 22390987 A JP22390987 A JP 22390987A JP S6467835 A JPS6467835 A JP S6467835A
Authority
JP
Japan
Prior art keywords
motor
temperature
memory alloy
shape memory
stored
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
JP22390987A
Other languages
Japanese (ja)
Inventor
Takashi Suzuki
Michio Morita
Ikuaki Okabe
Soichi Kosoto
Shinichi Iizuka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP22390987A priority Critical patent/JPS6467835A/en
Publication of JPS6467835A publication Critical patent/JPS6467835A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/323—Thermally-sensitive members making use of shape memory materials

Abstract

PURPOSE:To obtain an overheat preventing device for a motor which is simple and safe and reusable by elastically connecting a shape memory alloy stored to release the connection state and be separated at the preset temperature to part of an electric circuit and detecting the temperature of the outer hull surface of the motor. CONSTITUTION:A shape memory alloy 2 is stored in a case and fitted to the outer hull surface of a motor to detect the temperature. A shape 2' to release the connection state and separate at the abnormal temperature is stored in advance in the shape memory alloy 2, it is connected in the linear state 2a utilizing its elasticity at the ordinary usage temperature, and the connection is released to cut off an electric circuit when the temperature of the motor becomes abnormal. Safety is thereby secured, there is no danger that the connection is resumed after the fixed time and the current flows again, the shape memory alloy can be reconnected and reused after the abnormal portion of the motor is repaired.
JP22390987A 1987-09-09 1987-09-09 Overheat preventing device for motor Pending JPS6467835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22390987A JPS6467835A (en) 1987-09-09 1987-09-09 Overheat preventing device for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22390987A JPS6467835A (en) 1987-09-09 1987-09-09 Overheat preventing device for motor

Publications (1)

Publication Number Publication Date
JPS6467835A true JPS6467835A (en) 1989-03-14

Family

ID=16805611

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22390987A Pending JPS6467835A (en) 1987-09-09 1987-09-09 Overheat preventing device for motor

Country Status (1)

Country Link
JP (1) JPS6467835A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0999570A1 (en) * 1998-11-06 2000-05-10 1st Memory Alloys GmbH Electrical protective breaking device with memory element and memory alloys therefor
CN104701106A (en) * 2015-03-13 2015-06-10 山东大学 Intelligent element for circuit breaker and preparation method thereof
CN104701107A (en) * 2015-03-17 2015-06-10 山东大学 Breaker for circuit fire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0999570A1 (en) * 1998-11-06 2000-05-10 1st Memory Alloys GmbH Electrical protective breaking device with memory element and memory alloys therefor
CN104701106A (en) * 2015-03-13 2015-06-10 山东大学 Intelligent element for circuit breaker and preparation method thereof
CN104701107A (en) * 2015-03-17 2015-06-10 山东大学 Breaker for circuit fire

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