JPH0224390U

JPH0224390U -

Info

Publication number: JPH0224390U
Application number: JP10169388U
Authority: JP
Priority date: 1988-07-30
Filing date: 1988-07-30
Publication date: 1990-02-19
Anticipated expiration: 2003-07-30
Also published as: JPH065654Y2

Description

[Brief explanation of the drawing]

第１図及び第２図は本考案にかかるバイアス磁
石取り付け構造を利用したホルダ付き磁気センサ
素子を示す図であり、第１図は斜視図、第２図ａ
は平面図、第２図ｂは正面図、第２図ｃは同図ａ
のＢ―Ｂ線上側断面図、第２図ｄは側面図、第３
図はホルダ１３にバイアス磁石１５を取り付ける
方法を示す図、第４図は磁気センサ素子１１の垂
直度の測定方法を示す図、第５図は面対向型ブラ
シレスＤＣモータの構造を示す図、第６図はホル
ダ付き磁気センサ素子１１７の取り付け状態を示
す図、第７図は従来のホルダ付き磁気センサ素子
１１７を示す図であり、同図ａはホルダ付き磁気
センサ素子１１７の分解斜視図、同図ｂは同図ａ
のホルダ付き磁気センサ素子１１７を組み立てて
そのＡ―Ａ線で切断した状態を示す側断面図であ
る。図中、１…ホルダ付き磁気センサ素子、１１…
磁気センサ素子、１１ａ…磁気検出面、１３…ホ
ルダ、１５…バイアス磁石、１７…磁気センサ素
子保持部、１８，１８…バイアス磁石固定用爪、
１８ａ…爪部、１９，１９…バイアス磁石押え板
、である。 1 and 2 are views showing a magnetic sensor element with a holder using the bias magnet mounting structure according to the present invention, FIG. 1 is a perspective view, and FIG.
is a plan view, Figure 2b is a front view, and Figure 2c is a front view.
Figure 2d is a side view, Figure 3 is a side view of
4 shows a method for measuring the perpendicularity of the magnetic sensor element 11. FIG. 5 shows the structure of a surface-facing brushless DC motor. 6 is a diagram showing the attached state of the magnetic sensor element 117 with a holder, and FIG. 7 is a diagram showing the conventional magnetic sensor element 117 with a holder. Figure b is the same as figure a.
FIG. 2 is a side cross-sectional view showing a state in which the magnetic sensor element 117 with a holder is assembled and cut along line AA. In the figure, 1... magnetic sensor element with holder, 11...
Magnetic sensor element, 11a... Magnetic detection surface, 13... Holder, 15... Bias magnet, 17... Magnetic sensor element holding part, 18, 18... Bias magnet fixing claw,
18a...claw portion, 19, 19...bias magnet holding plate.

Claims

[Scope of Claim for Utility Model Registration] (1) A magnetic sensor element that is flat and has one surface as a magnetic detection surface, and a bias magnet disposed near the back side of the magnetic detection surface of the magnetic sensor element. , a holder made of synthetic resin, the magnetic sensor element being fixed so as to expose its magnetic detection surface, and a synthetic resin holder having the bias magnet fixed to the back side of the magnetic sensor element. In the sensor element, at least two bias magnet fixings are formed on the back side of the magnetic sensor element holding part to which the magnetic sensor element of the holder is attached, and a claw part is formed in which the upper part of the column that supports both sides of the bias magnet projects inward. A bias magnet mounting structure for a magnetic sensor element with a holder, characterized in that a bias magnet holding plate is formed to support a back surface of the bias magnet. (2) With the bias magnet removed from the holder, a predetermined portion of the back surface of the magnetic detection surface of the magnetic sensor element is exposed from the magnetic sensor element holding portion of the holder, and a portion extending perpendicularly from the exposed surface; 2. The bias magnet mounting structure for a magnetic sensor element with a holder according to claim 1, wherein the bias magnet fixing claw and the bias magnet holding plate are not arranged in the structure.