JPS62172235U - - Google Patents
Info
- Publication number
- JPS62172235U JPS62172235U JP5796286U JP5796286U JPS62172235U JP S62172235 U JPS62172235 U JP S62172235U JP 5796286 U JP5796286 U JP 5796286U JP 5796286 U JP5796286 U JP 5796286U JP S62172235 U JPS62172235 U JP S62172235U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- turns
- temperature
- detects
- switch
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Protection Of Generators And Motors (AREA)
- Brushless Motors (AREA)
Description
図はこの考案の一実施例を示す回路図で、図に
おいて１はホール素子、４はスイツチ回路、６ａ
，６ｂは固定子コイル、７ａ，７ｂはトランジス
タ、８ａ，８ｂは温度センサ、９は回転検知回路
、１０は再起動タイマー回路、１１は過熱保護回
路である。
The figure is a circuit diagram showing an embodiment of this invention. In the figure, 1 is a Hall element, 4 is a switch circuit, and 6a
, 6b are stator coils, 7a and 7b are transistors, 8a and 8b are temperature sensors, 9 is a rotation detection circuit, 10 is a restart timer circuit, and 11 is an overheat protection circuit.
Claims (1)
個の各固定子コイルに直列に接続されたトランジ
スタを順次オンとしてそれらへの付勢電流を切換
え供給するようにしたブラシレスモータにおいて
、上記回転子磁石の回転数の所定値以下を検出す
る回転検知回路、この回路による低回転数検出に
応じ上記トランジスタをオンとする信号印加をオ
フとするスイツチ回路、上記回転検知回路による
低回転数検出から所定時間後上記回転検知回路を
リセツトし上記スイツチ回路をオンとさせる再起
動タイマー回路、上記固定子コイルに接続された
トランジスタに近接して配設され、それの温度を
検出する温度センサ、及びこれら温度センサの何
れかの検出温度が所定値以上の時上記スイツチ回
路をオフとする過熱保護回路を備えたことを特徴
とするブラシレスモータ。 In the brushless motor, the rotation of the rotor magnet is detected, and accordingly, transistors connected in series to each of the plurality of stator coils are sequentially turned on to switch and supply energizing current to each of the plurality of stator coils. A rotation detection circuit that detects when the rotation speed of the magnet is below a predetermined value; a switch circuit that turns off the application of a signal that turns on the transistor in response to the low rotation speed detection by this circuit; a restart timer circuit that resets the rotation detection circuit after a period of time and turns on the switch circuit; a temperature sensor that is disposed close to the transistor connected to the stator coil and detects the temperature thereof; and a temperature sensor that detects the temperature of the transistor connected to the stator coil. A brushless motor characterized by comprising an overheat protection circuit that turns off the switch circuit when the temperature detected by any of the sensors exceeds a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5796286U JPH0628915Y2 (en) | 1986-04-17 | 1986-04-17 | Brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5796286U JPH0628915Y2 (en) | 1986-04-17 | 1986-04-17 | Brushless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62172235U true JPS62172235U (en) | 1987-10-31 |
| JPH0628915Y2 JPH0628915Y2 (en) | 1994-08-03 |
Family
ID=30888128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5796286U Expired - Lifetime JPH0628915Y2 (en) | 1986-04-17 | 1986-04-17 | Brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628915Y2 (en) |
-
1986
- 1986-04-17 JP JP5796286U patent/JPH0628915Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0628915Y2 (en) | 1994-08-03 |
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