JPH0365913U

JPH0365913U -

Info

Publication number: JPH0365913U
Application number: JP12627489U
Authority: JP
Priority date: 1989-10-27
Filing date: 1989-10-27
Publication date: 1991-06-26

Description

[Brief explanation of drawings]

第１図は本考案にかかる磁気エンコーダの実施
例を示す断面側面図、第２図は同上実施例中の磁
気センサ部分の正面図、第３図は同上実施例の分
解斜視図、第４図は同上実施例の要部の拡大断面
側面図、第５図は本考案にかかる磁気エンコーダ
の別の実施例を示す断面側面図、第６図は本考案
を採り入れた磁気エンコーダ全体の構成例を示す
断面側面図、第７図は本考案にかかる磁気エンコ
ーダのさらに別の実施例を示す平面図、第８図は
磁気ドラムと感磁素子とのギヤツプと感磁素子の
出力との関係を示す線図、第９図は本考案にかか
る磁気エンコーダのさらに別の実施例を示す平面
図、第１０図は本考案にかかる磁気エンコーダの
さらに別の実施例を示す平面図、第１１図は本考
案にかかる磁気エンコーダのさらに別の実施例を
示す斜視図、第１２図は同上実施例の断面正面図
、第１３図は同上実施例中の基台の平面図、第１
４図は同上実施例中の磁気センサの正面図、第１
５図は同上磁気センサの底面図、第１６図は本考
案に適用可能な磁気センサの取付け機構の別の例
を示す断面正面図、第１７図は従来の磁気エンコ
ーダの例を示す断面平面図、第１８図は従来の磁
気エンコーダの別の例を示す断面平面図である。１，２０，２５，３０……基台、２……磁気ド
ラム、３，１５，２６……磁気ドラム、４，１６
，２２，２７，３１……ホルダ、５，１７，２３
，２８……基板、６……感磁素子、１ａ，２１，
２５ａ……壁面、６ａ……感磁素子。 Fig. 1 is a cross-sectional side view showing an embodiment of the magnetic encoder according to the present invention, Fig. 2 is a front view of the magnetic sensor portion in the above embodiment, Fig. 3 is an exploded perspective view of the above embodiment, and Fig. 4 5 is an enlarged cross-sectional side view of the main part of the same embodiment, FIG. 5 is a cross-sectional side view showing another embodiment of the magnetic encoder according to the present invention, and FIG. 6 is an example of the overall configuration of the magnetic encoder incorporating the present invention. 7 is a plan view showing still another embodiment of the magnetic encoder according to the present invention, and FIG. 8 shows the relationship between the gap between the magnetic drum and the magnetic sensing element and the output of the magnetic sensing element. 9 is a plan view showing still another embodiment of the magnetic encoder according to the present invention, FIG. 10 is a plan view showing still another embodiment of the magnetic encoder according to the present invention, and FIG. 11 is a plan view showing another embodiment of the magnetic encoder according to the present invention. A perspective view showing still another embodiment of the magnetic encoder according to the invention, FIG. 12 is a sectional front view of the same embodiment, and FIG. 13 is a plan view of the base in the above embodiment.
Figure 4 is a front view of the magnetic sensor in the same embodiment as above;
5 is a bottom view of the same magnetic sensor as above, FIG. 16 is a sectional front view showing another example of a magnetic sensor mounting mechanism applicable to the present invention, and FIG. 17 is a sectional plan view showing an example of a conventional magnetic encoder. , FIG. 18 is a sectional plan view showing another example of a conventional magnetic encoder. 1, 20, 25, 30... Base, 2... Magnetic drum, 3, 15, 26... Magnetic drum, 4, 16
, 22, 27, 31...Holder, 5, 17, 23
, 28...Substrate, 6...Magnetic sensing element, 1a, 21,
25a...Wall surface, 6a...Magnetic sensing element.

Claims

[Claims for Utility Model Registration] 1. A magnetic encoder comprising a magnetic drum rotatably supported on a base and on which magnetic signals are recorded in the circumferential direction, and a magnetic sensor disposed opposite to the magnetic drum. , the base has a wall surface having a certain dimensional relationship with the circumferential surface of the magnetic drum, the magnetic sensor has a substrate on which a magnetic sensing element is formed, and a holder holding the substrate, A magnetic encoder characterized in that the magnetic sensor is fixed in contact with the wall surface of the base, so that the magnetic sensing element of the magnetic sensor is arranged to face the circumferential surface of the magnetic drum with a certain gap. 2. The magnetic encoder according to claim 1, wherein the surface of the substrate of the magnetic sensor is brought into contact with the wall surface of the base. 3. Claim 1 of the magnetic sensor, wherein the magnetic sensing element formed on the surface of the substrate is brought into contact with the wall surface of the base.
Magnetic encoder described.