Delta Tooling Co., Ltd.

Hiroshi Nakahira

Etsunori Fujita

Yoshimi Enoki

Yumi Ogura

Seiji Kawasaki

Kazuyoshi Chizuka

Eiji Sugimoto

Shigeyuki Kojima

Shigeki Wagata

Hiroki Honda

Hideyuki Yamane

There is provided a bio-signal detector to detect a heart rate and a respiratory rate so that the determination of a kind of a seat load placed on a seat can be made. That is, whether the seat load is a human or an object is determined, and if it is the human, then the physique size is determined to be small or large (the level of the physique size is determined). Accordingly, as compared with the means based only on a weight of the seat load, the determination result is highly reliable. Besides, with the use of the bio-signal detector, the discrimination between the human and the object is ensured. Moreover, a structure additionally including a weight sensor allows the determination of the physique size in more accurate manner.

Device for determining kind of load on seat, seat, and bio-signal detector

A magneto-spring structure includes a lower frame and an upper frame vertically movably mounted on the lower frame via a link mechanism. The upper and lower frames have respective permanent magnets secured thereto, with like magnetic pole opposed to each other. The link mechanism includes a plurality of links and a connecting member for rotatably connecting them via a bearing. The links are made of non-magnetic material, while the bearing is made of ferromagnetic material.

Magneto-spring structure

An energy converting mechanism includes at least two permanent magnets spaced from each other with the same magnetic poles opposed to each other, and a magnetic spring formed by the at least two permanent magnets. The magnetic spring provides negative damping characteristics or changes static magnetic energy by changing an opposing area of the at least two permanent magnets so that an output is extracted from one of the at least two permanent magnets by applying an input to the other.

Energy extracting mechanism having a magnetic spring

Magnetic spring having damping characteristics and vibration mechanism

Growing community of inventors

Hiroshima, Japan

Hiroshi Nakahira