JPH0322339U - - Google Patents

Description

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

第１図はこの考案に係るドア開閉検出装置の一
例を模式的に示す斜視図、第２図は同装置におけ
る半ドア検出時の説明図、第３図は同装置におけ
るしや磁体の移動にともなう磁束変化を示す図、
第４図は従来のドア開閉検出装置の一例を模式的
に示す斜視図、第５図は同装置における半ドア検
出時の説明図である。 １……しや磁体、２，３……マグネツト、４，
５……磁電変換素子（ホール素子）。 Fig. 1 is a perspective view schematically showing an example of the door opening/closing detection device according to this invention, Fig. 2 is an explanatory diagram when the device detects an ajar door, and Fig. 3 shows the movement of the magnetic material in the same device. A diagram showing the accompanying magnetic flux change,
FIG. 4 is a perspective view schematically showing an example of a conventional door opening/closing detection device, and FIG. 5 is an explanatory diagram of the same device when a door is detected ajar. 1...Shiya magnetic material, 2, 3...Magnet, 4,
5...Magnetoelectric conversion element (Hall element).

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ドアの全開位置と全閉位置に対応して往復移動
可能に設けられたしや磁体と、このしや磁体の移
動方向へ所定間隔を存して配設された第１および
第２のマグネツトと、各マグネツトに上記しや磁
体をはさんでそれぞれ対向配設された複数の磁電
変換素子とを備え、上記磁電変換素子からの出力
によりドアの開位置および閉位置ならびに半ドア
位置を検出するように構成したドア開閉検出装置
において、上記マグネツトおよび磁電変換素子を
各隣接するもの同志で極性が異なるように配設し
たことを特徴とするドア開閉検出装置。 A blade magnetic body provided so as to be movable back and forth in response to fully open and fully closed positions of the door, and first and second magnets disposed at a predetermined interval in the direction of movement of the blade magnetic body. , each magnet is equipped with a plurality of magneto-electric transducers arranged facing each other with the above-mentioned magnetic material in between, and the open and closed positions of the door and the ajar position of the door are detected by the output from the magneto-electric transducer. 1. A door opening/closing detection device configured as above, characterized in that the magnets and magnetoelectric transducers are arranged so that adjacent magnets and magnetoelectric transducers have different polarities.