JPS55106085A - Switch device for motor - Google Patents
Switch device for motorInfo
- Publication number
- JPS55106085A JPS55106085A JP1250479A JP1250479A JPS55106085A JP S55106085 A JPS55106085 A JP S55106085A JP 1250479 A JP1250479 A JP 1250479A JP 1250479 A JP1250479 A JP 1250479A JP S55106085 A JPS55106085 A JP S55106085A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnet
- contact
- motor
- current
- coil
- 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
Links
Landscapes
- Push-Button Switches (AREA)
- Motor And Converter Starters (AREA)
Abstract
PURPOSE: To automatically open a motor circuit when a large current is flown through the motor by differentially winding voltage and current coils on an electromagnet for attracting a magnetic contact connected to the push-button of a switch and connecting the current coil in series with the motor.
CONSTITUTION: When a tongue 10 is urged to its ON position by a button 3, a contact 4 is brought into contact with a contact 5 and an electric current is thereby flown through a voltage coil 7. Since a magnetic contact 2 is largely spaced from an electromagnet 6, it is not magnetically attracted to the electromagnet 6. Inasmuch as the magnetic contact 2 approaches the electromagnet 6 at the position where the contact 2 may be magnetically attracted to the electromagnet 6 when the tongue 10 is urged to its holding position, the contact 2 is held in contact with the electromagnet 6 so that the motor 1 continues its rotation. When a large current flows through the motor 1, the electromagnet 6 is reversely energized by the current coil 8 wound differentially on the electromagnet 6 from the voltage coil 7 to thereby cancel the energization of the voltage coil 7. Thus, the contact 2 is opened from the electromagnet 6, and the motor 1 is thus stopped.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1250479A JPS55106085A (en) | 1979-02-06 | 1979-02-06 | Switch device for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1250479A JPS55106085A (en) | 1979-02-06 | 1979-02-06 | Switch device for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55106085A true JPS55106085A (en) | 1980-08-14 |
Family
ID=11807177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1250479A Pending JPS55106085A (en) | 1979-02-06 | 1979-02-06 | Switch device for motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55106085A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368671A (en) * | 2011-09-30 | 2012-03-07 | 广州高澜节能技术股份有限公司 | High voltage direct current transmission valve cooling system soft starting apparatus |
-
1979
- 1979-02-06 JP JP1250479A patent/JPS55106085A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368671A (en) * | 2011-09-30 | 2012-03-07 | 广州高澜节能技术股份有限公司 | High voltage direct current transmission valve cooling system soft starting apparatus |
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