Delta Tooling Co., Ltd.

Other

Delta Kogyo Co., Ltd.

Shigeyuki Kojima

Etsunori Fujita

Yumi Ogura

Seiji Kawasaki

Kazuyoshi Chizuka

Shinichiro Maeda

Soichi Makita

Eiji Sugimoto

Shigeki Wagata

Hideyuki Yamane

Yasuhide Takata

Ryuji Kuwano

Hiroki Oshimo

Yoshimi Enoki

Naoki Ochiai

Jun Fukuda

Hiroshi Nakahira

Masaki Nishino

Kazuhiro Ueda

Atsushi Nishida

Hiroki Ohshimo

Seiya Yoshida

Taizo Nakata

Eiichi Koyama

Shigeru Maeda

Masahiro Mashino

Miho Kikusui

Hidehiro Oda

Yoshiaki Nagae

There are improved a vibration absorption characteristic and an impact absorption characteristic. In a suspension mechanismof the present invention, first and second dampers () are suspended in parallel between an upper frame () and a lower frame () with mounting angles different from each other. For this reason, the smaller mounting angle the damper has, the smaller a vertical component of damping force becomes, and the damping force which acts on the upper frame () and the lower frame () which move up and down relatively is moderate in effectiveness as compared with a case of disposing all the dampers at the same mounting angle. Thus, a sense of incongruity in which strong damping force acts abruptly is suppressed and the vibration absorption characteristic and the impact absorption characteristic are improved, which leads to improvement in ride comfort.

Suspension mechanism, multi-suspension mechanism and damper

Determination about presence/absence of alcohol in the body is made accurately. A frequency dynamic information processing meanswhich obtains a tendency of time-series fluctuation regarding a frequency of a pulse wave of a back portion of a person detected by an air pack and an alcohol-drinking determining meanswhich determines an alcohol-drinking state when a tendency of a time-series fluctuation regarding the frequency obtained by the frequency dynamic information processing meansis separated from a tendency of time-series fluctuation regarding the frequency at a non-drinking state are provided. Since determination about whether or not a person is in an alcohol-drinking state is made according to comparison with time-series fluctuation regarding the frequency at a non-drinking time, where the determination is made using not only frequency analysis of the frequency of a pulse wave changing according to the physical condition of the person but also the time-series fluctuation thereof, determination about presence/absence of alcohol drinking can be made more accurately as compared with the conventional method.

Alcohol-drinking detecting system and computer program

A configuration is adopted where elastic members made of expanded rein beads and having a size covering air cushions are disposed between a skin member and the air cushions of a human body supporting device. By arranging a plurality of elastic members made of expanded rein beads and in a stacking manner, preferably, arranging two elastic members made of expanded resin beads, spring constants of the elastic members obtained from load-deflection characteristics when they are pressed to a deflection amount of 1 mm by a pressing plate with a diameter of 30 mm being higher than that of the air cushion and being different from each other, a biological signal can be transmitted to the air cushions without damping the biological signal, though the elastic members made of expanded rein beads and are provided.

Biological signal measuring device and biological state analyzing system

A vehicle seat includes a tension structure extended on a back frame with a configuration in which a natural frequency in the right-and-left direction of the back frame is set lower than the natural frequency in the front-and-rear direction. Thereby, the structure can easily deflect in the right-and-left direction. Therefore, since an impact load larger than a predetermined level inputted in the front-and-rear direction due to front-and-rear/pitching vibration or a rear collision and the like becomes a force of deflecting the back frame in the right-and-left direction, the vibration/impact energy is consumed by that, and moreover, rearward displacement of the back frame consumes vibration/impact energy. Thus, absorbing performances of the vibration/impact energy are higher than before.

Vehicle seat

A structural material is provided, the strength and toughness of which are well-balanced at a high level, suitable in particular for seat frames in automobiles, aircrafts and the like. Specifically disclosed is a structural material produced by integrally joining thin steel members in a part thereof and, after joining, thermally heating a part thereof so that the heat-treated part differs from the other parts in strength and toughness. Unlike a structural material, the strength of which as a whole has been uniformly improved by heat treatment, the above-described structural material consists of a part having a high strength and a part having low strength. Thus, a structural material, the strength and toughness of which are well-balanced at a high level can be obtained. Since the strength and toughness are well-balanced at a high level, the structural material is suitable particularly for seat frames in automobiles, aircrafts and the like.

Structural material

A state change of a person is captured with timing closer to consciousness of the person. A frequency slope waveform of a time series signal of a pulse wave of a body of a person detected by an air pack is obtained by a frequency slope time-series analyzing and a computing device and a frequency fluctuation time-series waveform is obtained by a frequency fluctuation time-series analyzing and computing device. By comparing changes of two waveforms with each other in a waveform determining device, a state change of a person can be captured with timing closer to consciousness of the person.

Device and computer program for analyzing biological body state

Follow-up performance to respiratory movements is made higher than that of the prior art without obstructing movements of the pelvis of a person. A configuration is adopted that a cushioning member arrangement frame for a seat backand a cushioning member arrangement frame for a seat cushion are displaced according to load fluctuation to a cushioning member for a seat backor a cushioning member for a seat cushion. That is, such a configuration is adopted that the cushioning member arrangement frame for a seat backor the cushioning member for a seat cushionnot only moves according to load fluctuation but also frames themselves supporting them move via tension structure members spread over the frames (a cushioning member for a seat back and a cushioning member for a seat cushion). Accordingly, when a person lays his/her pelvis at his/her sitting position for deep breathing, the cushioning member arrangement frame for a seat back is displaced to push the vicinity of an upper portion of the cushioning member for a seat back, so that the vicinity of a lower portion of the cushioning member for a seat back is pushed forward to enrich support of the sacrum of the person.

Seat structure

The object of the present invention is to suppress rebound of a human body by making a reaction force small due to a large damping ratio. A bulging portion is formed at a seat cushioning member which is a tension structure. This structure has a structure of changing the damping characteristics functioned by the change in strain energy and tension by deformation created by a plane wave of the tension structure in accordance with the magnitude of the excitation force of an inputted vibration. Therefore, since the damping characteristics function with a small damping ratio to an input of a small excitation force, it can relieve the vibration with a phase difference due to the spring property of the seat cushioning member and/or a back cushioning member and to an input of a large excitation force, by increase of the strain energy and decrease of the tension, the damping characteristics function with a large damping ratio and a long operating time, so that rebound of a human body upward can be suppressed.

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

A vibration mechanism includes a repulsive magneto-spring made up of at least two permanent magnets,In this vibration mechanism, the spring constant of the magneto-spring is set to approximately zero by appropriately selecting the relationship of one of the permanent magnets,relative to the other.

Vibration mechanism

A seat or bed partly includes frames,and net-shaped skins,held by the frames,under tension, respectively. Each of the net-shaped skins,is made of an upper mesh layer,, a lower mesh layer,, and a pile layer having a large number of piles,that connect the upper and lower mesh layers,to each other. Each pile,is made of a single string.

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Hiroshima, Japan

Shigeyuki Kojima