JPH0181837U

JPH0181837U -

Info

Publication number: JPH0181837U
Application number: JP1987177333U
Authority: JP
Priority date: 1987-11-20
Filing date: 1987-11-20
Publication date: 1989-05-31

Description

[Brief explanation of the drawing]

第１図ないし第４図はこの考案におけるホール
効果形近接スイツチの一実施例を示すもので、第
１図は磁石を２分し、磁化方向をたがいに変えた
構成図で、イは平面図、ロは正面図、第２図は磁
石を３分し、磁化方向を交互に変えた構成図で、
イは平面図、ロは正面図、第３図は近接スイツチ
に対する被検出体の動きを示す説明図、第４図は
第３図における被検出体の移動量と検出磁束密度
との関係を示す特性図、第５図および第６図は被
検出体と近接スイツチとの間の距離に対してゼロ
クロス点が描く軌跡の正面図、第７図ないし第１
０図は従来のホール効果形近接スイツチの一実施
例を示すもので、第７図イは角柱状磁石の平面図
、ロは磁化方向を示す正面図、第８図イは円柱状
磁石の平面図、ロは磁化方向を示す正面図、第９
図は動作を説明する正面図、第１０図は第９図に
おける被検出体の移動量と検出磁束密度との関係
を示す特性図、第１１図は従来例における第５図
と同様の軌跡の正面図である。１……被検出体、２……磁石、３……近接スイ
ツチ。 Figures 1 to 4 show an embodiment of the Hall effect type proximity switch according to this invention. Figure 1 is a configuration diagram in which a magnet is divided into two halves and the magnetization directions are changed, and A is a plan view. , B is a front view, and Figure 2 is a configuration diagram in which the magnet is divided into three parts and the magnetization direction is alternately changed.
A is a plan view, B is a front view, Fig. 3 is an explanatory diagram showing the movement of the detected object with respect to the proximity switch, and Fig. 4 shows the relationship between the amount of movement of the detected object and the detected magnetic flux density in Fig. 3. Characteristic diagrams, Figures 5 and 6 are front views of the locus drawn by the zero cross point with respect to the distance between the detected object and the proximity switch, and Figures 7 to 1 are
Figure 0 shows an example of a conventional Hall effect type proximity switch, Figure 7 (a) is a plan view of a prismatic magnet, (b) is a front view showing the direction of magnetization, and Figure 8 (a) is a plane view of a cylindrical magnet. Figures 9 and 9 are front views showing the direction of magnetization.
The figure is a front view explaining the operation, Figure 10 is a characteristic diagram showing the relationship between the amount of movement of the detected object and the detected magnetic flux density in Figure 9, and Figure 11 is a trajectory similar to Figure 5 in the conventional example. It is a front view. 1...Object to be detected, 2...Magnet, 3...Proximity switch.

Claims

[Scope of utility model registration request]

In a device that detects and outputs the magnitude of magnetic flux density at a certain spatial point by a Hall element or Hall IC when magnets constituting an object to be detected approach each other, a plurality of magnets with different magnetization directions are combined into one.
A Hall effect proximity switch in which the detected object consists of two detected objects or a single magnet partially magnetized in different directions.