JPH0453560U

JPH0453560U -

Info

Publication number: JPH0453560U
Application number: JP1990095635U
Authority: JP
Priority date: 1990-09-12
Filing date: 1990-09-12
Publication date: 1992-05-07

Description

[Brief explanation of the drawing]

第１図は加速度センサの斜視図、第２図は同分
解図、第３図は衝突時の加速度と加速度センサと
の遅れを示す実験図、第４図は磁性ヨークの取付
けを変えた斜視図、第５図及び第６図は２枚の加
圧導電材を用いた実施例を示す斜視図、第７図は
リードスイツチを設けた加速度センサの斜視図、
第８図はリング状端子板を有する加速度センサで
、同図ａは平面図、同図ｂは斜視図、第９図乃至
第１３図は本考案の更に別の実施例を示すそれぞ
れ斜視図、第１４図は従来例の加速度センサの斜
視図である。１……ケース本体、２……磁性ヨーク、３……
可動永久磁石、４……加圧導電材、６Ａ，６Ｂ…
…端子板、１０……リードスイツチ、１１……可
動永久磁石、１２……加圧導電材、１３Ａ，１３
Ｂ……電極、１４，１６……可動磁性体、１５Ａ
，１５Ｂ，１７Ａ，１７Ｂ……固定永久磁石。 Figure 1 is a perspective view of the acceleration sensor, Figure 2 is an exploded view of the same, Figure 3 is an experimental diagram showing the delay between acceleration and the acceleration sensor during a collision, and Figure 4 is a perspective view with the magnetic yoke installed differently. , FIGS. 5 and 6 are perspective views showing an embodiment using two pressurized conductive materials, and FIG. 7 is a perspective view of an acceleration sensor equipped with a reed switch.
Fig. 8 shows an acceleration sensor having a ring-shaped terminal plate, in which Fig. 8a is a plan view, Fig. 8b is a perspective view, and Figs. FIG. 14 is a perspective view of a conventional acceleration sensor. 1...Case body, 2...Magnetic yoke, 3...
Movable permanent magnet, 4... Pressurized conductive material, 6A, 6B...
... Terminal board, 10 ... Reed switch, 11 ... Movable permanent magnet, 12 ... Pressure conductive material, 13A, 13
B... Electrode, 14, 16... Movable magnetic body, 15A
, 15B, 17A, 17B...Fixed permanent magnet.

Claims

[Scope of claim for utility model registration] (1) In an acceleration sensor, a movable permanent magnet;
a container containing a pressurized conductive material and having a space in which the movable permanent magnet can move between the pressurized conductive material and a magnetic yoke that holds the movable permanent magnet with magnetic attraction; An acceleration sensor characterized in that the movable permanent magnet is positioned at a position away from the pressurized conductive material by magnetic attraction between the movable permanent magnet and a magnetic yoke. (2) The acceleration sensor according to claim 1, wherein the movable permanent magnet is columnar or spherical. (3) Claim 1 or 2, wherein a pressurized conductive material sandwiched between the pair of electrodes is arranged before and after the movable permanent magnet.
Acceleration sensor described in. (4) Claim 1, wherein the magnetic yoke has a U-shape such that a pair of tips face the movable permanent magnet.
4. The acceleration sensor according to any one of 3 to 3. (5) A magnetic gap is interposed near the center of the lower end of the magnetic yoke, and the magnetic attraction force is adjusted by changing the width of the magnetic gap. Acceleration sensor described in. (6) The magnetic yokes are configured as a pair,
2. A reed switch is attached to an end surface of the magnetic yoke opposite to the side corresponding to the movable permanent magnet, and the movable permanent magnet, the magnetic yoke, and the reed switch are arranged so as to form a closed magnetic path. acceleration sensor. (7) The acceleration sensor according to claim 1, wherein the movable permanent magnet is spherical, the pressurized conductive material is formed into a ring shape, and electrodes are arranged on both sides of the ring shape. (8) The acceleration sensor according to any one of claims 1 to 7, wherein a magnetic fluid is added around the movable permanent magnet. (9) In an acceleration sensor, a container contains a movable magnetic body and a pressurized conductive material, and has a space in which the movable magnetic body can move between the pressurized conductive material and the movable magnetic body by magnetic attraction. and a permanent magnet held by a force, wherein the movable magnetic body is positioned at a position away from the pressurized conductive material by a magnetic attraction force between the movable magnetic body and the permanent magnet. (10) The acceleration sensor according to claim 9, wherein the movable magnetic body is columnar or spherical. (11) Claim 9 or 10, wherein a pressurized conductive material sandwiched between the pair of electrodes is arranged before and after the movable magnetic body.
Acceleration sensor described in. (12) The acceleration sensor according to any one of claims 9 to 11, wherein a magnetic fluid is added around the movable magnetic body. (13) The acceleration sensor according to claim 9, wherein the movable magnetic body is spherical, the pressurized conductive material is formed into a ring shape, and electrodes are arranged on both sides of the ring shape.