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
Application number
JP12185585U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP12185585U priority Critical patent/JPS6229754U/ja
Publication of JPS6229754U publication Critical patent/JPS6229754U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 非点対称形のエンコーダデイスクを、ローター
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.
JP12185585U 1985-08-08 1985-08-08 Pending JPS6229754U (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5020101B1 (en) * 1970-03-09 1975-07-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5020101B1 (en) * 1970-03-09 1975-07-11

Cited By (1)

* Cited by examiner, † Cited by third party
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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