JPS6229754U - - Google Patents
Info
- Publication number
- JPS6229754U JPS6229754U JP12185585U JP12185585U JPS6229754U JP S6229754 U JPS6229754 U JP S6229754U JP 12185585 U JP12185585 U JP 12185585U JP 12185585 U JP12185585 U JP 12185585U JP S6229754 U JPS6229754 U JP S6229754U
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- encoder disk
- view
- plan
- showing
- 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
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Description
第1図は本考案の一実施例を示す縦断面図、第
2図は同上実施例をセンサを取り除いた状態で示
す縮小平面図、第3図は上記実施例の平面図、第
4図は上記実施例に用いられているエンコーダデ
イスクを示す平面図、第5図は本考案に用いるこ
とができるエンコーダデイスクの別の例を示す平
面図、第6図は上記実施例に用いられているセン
サユニツトの斜面図、第7図は本考案に用いるこ
とができる検出回路の例を示す回路図、第8図は
上記実施例の動作を説明するためにエンコーダデ
イスクとセンサとの位置関係の変化を示す平面図
、第9図は上記実施例の動作を説明するための検
出信号のタイミングチヤート、第10図は上記実
施例の動作を説明するためのトルク特性線図、第
11図は同じくトルク特性の別の態様を示す線図
、第12図は第11図の態様に対応するエンコー
ダデイスクとセンサとの位置関係を示す平面図、
第13図は本考案に使用可能なエンコーダデイス
クの別の例を示す平面図、第14図は本考案に使
用可能なエンコーダデイスクとローターマグネツ
トの別の例を示す平面図、第15図は第14図の
エンコーダデイスクによつて得られる検出信号を
示すタイミングチヤートである。
18…軸、20…ローター、21,22,41
,43…エンコーダデイスク。
Fig. 1 is a vertical sectional view showing an embodiment of the present invention, Fig. 2 is a reduced plan view showing the same embodiment with the sensor removed, Fig. 3 is a plan view of the above embodiment, and Fig. 4 is a plan view of the above embodiment. FIG. 5 is a plan view showing another example of the encoder disk that can be used in the present invention, and FIG. 6 is a plan view showing the sensor used in the above example. FIG. 7 is a circuit diagram showing an example of a detection circuit that can be used in the present invention, and FIG. 8 shows changes in the positional relationship between the encoder disk and the sensor to explain the operation of the above embodiment. FIG. 9 is a timing chart of the detection signal to explain the operation of the above embodiment, FIG. 10 is a torque characteristic diagram to explain the operation of the above embodiment, and FIG. 11 is the same torque characteristic. FIG. 12 is a plan view showing the positional relationship between the encoder disk and the sensor corresponding to the embodiment of FIG. 11;
FIG. 13 is a plan view showing another example of an encoder disk that can be used in the present invention, FIG. 14 is a plan view showing another example of an encoder disk and rotor magnet that can be used in the present invention, and FIG. 15 is a timing chart showing detection signals obtained by the encoder disk of FIG. 14; FIG. 18...shaft, 20...rotor, 21, 22, 41
, 43...Encoder disk.
Claims (1)
の磁極と一定の関係をもち、かつ、ローターと一
体回転するようにローターの軸方向側面に取付け
たことを特徴とする小型電動機。 A small electric motor characterized in that an asymmetrical encoder disk is attached to the axial side of the rotor so that it has a certain relationship with the magnetic poles of the rotor and rotates integrally with the rotor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12185585U JPS6229754U (en) | 1985-08-08 | 1985-08-08 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12185585U JPS6229754U (en) | 1985-08-08 | 1985-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6229754U true JPS6229754U (en) | 1987-02-23 |
Family
ID=31011506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12185585U Pending JPS6229754U (en) | 1985-08-08 | 1985-08-08 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6229754U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013042582A (en) * | 2011-08-12 | 2013-02-28 | Ricoh Co Ltd | Motor unit and image forming apparatus having the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5020101B1 (en) * | 1970-03-09 | 1975-07-11 |
-
1985
- 1985-08-08 JP JP12185585U patent/JPS6229754U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5020101B1 (en) * | 1970-03-09 | 1975-07-11 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013042582A (en) * | 2011-08-12 | 2013-02-28 | Ricoh Co Ltd | Motor unit and image forming apparatus having the same |
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