Abstract: In order to improve seating comfort and vibration absorbency, a structure including a first torsion bar unit 70 disposed in the rear of a seat cushion, and a second torsion bar unit 80 disposed in the front of the seat cushion, and a base net 60 stretched between a rear supporting frame 74 of the first torsion bar unit 70 and a front supporting frame 84 of the second torsion bar unit 80, is provided. Owing to the elastic force of a front torsion bar 81 of the second torsion bar unit 80 positioned in the front of the seat, a sense of stroke at the time of seating is enhanced. Owing to the elastic force of a rear torsion bar 71 of the first torsion bar unit 70 positioned in the rear of the seat, similarly to the conventional structure, a load of a seated person can be sufficiently received and a stable seating comfort can be obtained.

Abstract: The present invention makes it possible to easily perform judgment of a mental-and-physical state, and distinction between a person and a thing. A load body state is judged from time series data of an emphasis displacement inclination obtained by collecting displacement signal data of the load body state using a displacement signal collection sensor 10, determining a rate of change for every arbitrary interval of an original waveform as an original waveform displacement inclination at an operating unit 20, and at the same time, determining time series data of an average displacement inclination for every prescribed time period range from a plurality of original waveform displacement inclinations, and by determining an emphasis displacement inclination through slide calculation of time series data of the average displacement inclination for every prescribed sampling time.

Abstract: A flat spring member (40) mainly serving as a vibration absorptive function at a normal use is engaged with a supporting frame member (130) which displaces backward along with deformation of a seat back (20) by backward moment applied to the seat back (20), and the other end is engaged with a front edge frame (102) disposed in the vicinity of the front edge of a cushion frame. Therefore, when an impact force from front or back equal to or more than that prescribed is applied, the flat spring member (40) increases in tension by backward moment applied to the seat back (20), and serves as a function to increase again the intensity of the backward moment of the seat back (20), which was once lowered by deformation of the side frame (101) of the cushion frame.

Abstract: A vehicle seat is provided with a pair of left and right seatback side frames comprising a seatback frame. The seatback frame is connected to the rear end of a seat portion frame via a reclining mechanism. The vehicle seat is further provided with a torsion bar that is an elastic body between the reclining mechanism and the seatback frame. When the seatback frame displaces and falls forward relative to the seat portion frame, the torsion bar deforms and resists the displacement of the seatback frame. The torsion bar is arranged at the upper region of the seat occupant's pelvis.

Abstract: A seat structure which can ameliorate fatigue of a sitting person in accordance with a long period of sitting is provided. In a vehicle seat 10, a back edge side of a lower layer sheet 50 of a cushion material 20, of which a front edge side is fixed to a front edge side of a sitting portion frame 14, is resiliently connected to a back edge side of the sitting portion frame 14 via a movable frame 34 and a torsion bar 46, which is a resilient member. The cushion material 20 has a spring zero characteristic in which a spring constant of a portion that supports a protrusion portion of the sitting person is smaller than a spring constant of other portions. This vehicle seat 10 makes smaller the energy of vibrations which are transmitted to a spinal column portion of the sitting person through the sitting portion frame 14, and peripheral portions thereof convert vibrations corresponding to fluctuations in the body and transmit these through the sitting portion frame 14.

Abstract: A seat includes a seat frame, and a cushion material supported by the seat frame and having a three-dimensional knitted fabric which is formed by joining, with connecting threads, a pair of ground knit fabrics which are disposed so as to be separated from one another. The cushion material includes a first region whose elastic compliance when a reaction force is applied to an extending side of the cushion material when an occupant is seated on the seat is substantially equivalent to an elastic compliance of a portion of the occupant's body pressing the cushion material and a second region whose elastic compliance is larger than that of the first region. Accordingly, a thin and light seat can be provided, load concentration on the occupant's tuber ishiadicum bottom portion when seated for a long period of time can be mitigated, and vibration-transmitting characteristics can be improved.

Abstract: A seat includes a back part frame which is elastically deformable in a direction such that right and left side part frames are brought closer to, or moved away from, each other, and a tensile structural element which is stretched between the right and left side part frames so as to configure a backrest. Further, a headrest is provided at an upper part of the back part frame. In addition, the tensile structural element is stretched over the back part frame so as to configure a backrest, and is configured such that the back part frame is deformed so that the headrest is moved forward due to a tensile force resulting from a load imparted on the backrest.

Abstract: A human condition evaluation system, of which bio-signal analysis means includes a bio-signal peak value detection means for detecting a peak value for each cycle of an original waveform of a bio-signal data, and a power value calculation means for calculating a difference between the peak value at an upper limit side and the peak value at a lower limit side for every prescribed time range using respective peak values obtained by the bio-signal peak value detection means to thereby set the difference as a power value, is structured to determine a predictive signal for falling asleep from an active state into a sleep state. Different from conventional human condition evalution based simply on a Lyapunov exponent as an indicator, a new human condition evaluation system based on a functional status of an energy generation system of the living body is provided.

Abstract: In order to promote bloodstream and reduce fatigue, a device of the present invention makes a slight sitting posture change by adding a minute body motion with no necessity of moving a cushion frame or a seat frame though it realizes a supporting pressure change at a wide area, not locally, in a seat cushion or a seat back. It includes a cushioning member (30) for a seat cushion stretched across the cushion frame (10), and a cushioning member (40) for a seat back stretched across the back frame (20). The seat structure of the present invention includes: a lower cloth spring (31a) of a seat cushion or a cloth spring (41) of a seat back stretched across the cushion frame (10) or the back frame (20) via a torsion bar (11); and a cloth spring adjusting member (50) to change a supporting pressure by the cushioning member (30) for the seat cushion and the cushioning member (40) for the seat back through adjusting tension of the lower cloth spring (31a) or the cloth spring (41).

Abstract: 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.

Abstract: The degree of fatigue is quantified to be able to display. A fatigue degree measurement device 1 includes: a living body signal peak value detecting means 23 to detect the peak values of respective cycles of the original waveform of the living body signal data; a power value calculating means 24 to calculate the difference between a peak value on the upper limit side and a peak value on the lower limit side for every prescribed time period from respective peak values obtained by the living body signal peak value detecting means 23 to set the difference as a power value; and a power value inclination calculating means 25 to determine the inclination of the power value, to calculate an integral value by absolute value treatment of the time series signals of the inclination of the power values to determine the integral value as the degree of fatigue. As a result, it becomes possible to realize quantification of a human fatigue degree.

Abstract: A seat cushion of a vehicle seat has a base seat whose front end is anchored to a front frame of a frame for a sitting portion, and whose rear end is connected to a rear frame of the frame for a sitting portion via helical tension springs. A supporter, supported via helical tension springs at a pair of left and right side frames of the frame for a sitting portion, is disposed at a lower side of the base seat so as to support a femoral region of a seated person. The supporter and the helical tension springs structure an auxiliary vibration system whose mass element is a femoral region of a seated person. The auxiliary vibration system is made to function as a dynamic vibration absorber with respect to up-down vibrations of a main vibration system whose mass element is an upper body of a seated person.

Abstract: Seat structure designed to reduce weight and improve various functions such as impact absorbency, vibration absorbency. A torsion bar arranged along a width direction, and an arm connected to the torsion bar and enforced in a direction of falling backwards in a normal state are provided in the rear of a seat cushion, and a cushioning member is arranged between a supporting frame supported by the arm and a front frame provided at the front of the seat cushion, whose front edge is vertically movable rotationally. When working a pedal or standing up, since the front edge of the front frame is forced to move in a downward direction by a leg portion, a haunch supporting portion of the cushioning member is relatively lifted upward, so that support force to lift up the haunches works.

Abstract: In order to improve seating comfort and vibration absorbency, the present invention includes a front torsion bar unit 80 disposed in the front of a seat cushion, the front end of a base net 60 is connected to a supporting frame 84 of the front torsion bar unit 80, the rear end of the base net 60 is connected to a rear frame 70. Accordingly, owing to elastic force of a front torsion bar 81 of the front torsion bar unit 80 positioned in the front of the seat cushion, a sense of stroke at the time of seating is enhanced. A structure to dispose a torsion bar unit in the front as in the present invention works upon a tiny load fluctuation sensitively, and absorbency of high frequency vibration is further enhanced.

Abstract: In order to improve seating comfort and vibration absorbency, a structure including a first torsion bar unit 70 disposed in the rear of a seat cushion, and a second torsion bar unit 80 disposed in the front of the seat cushion, and a base net 60 stretched between a rear supporting frame 74 of the first torsion bar unit 70 and a front supporting frame 84 of the second torsion bar unit 80, is provided. Owing to the elastic force of a front torsion bar 81 of the second torsion bar unit 80 positioned in the front of the seat, a sense of stroke at the time of seating is enhanced. Owing to the elastic force of a rear torsion bar 71 of the first torsion bar unit 70 positioned in the rear of the seat, similarly to the conventional structure, a load of a seated person can be sufficiently received and a stable seating comfort can be obtained. Since both the first torsion bar unit 70 and the second torsion bar unit 80work together to vibration inputted during driving, vibration absorbency is more enhanced than ever.

Abstract: An automobile slide adjuster includes a lower rail to be secured to a vehicle body, an upper rail slidably mounted on the lower rail, a seat belt, a seat belt holding plate secured to the upper rail and having a seat belt anchor formed therewith to hold one end of the seat belt, and a reinforcing plate mounted to the lower rail to reinforce the seat belt holding plate.

Abstract: An upper end portion of a seat backrest and a lower end portion of a head rest are superposed together. A rear end portion of an upper portion cushion member and a lower end portion of the seat backrest are superposed together. These superposed portions are sewn together by thin threads which break when pressing force of a predetermined value or greater is applied to the seat backrest. Thus, when pressing force of the predetermined value or greater is applied to the seat backrest, the thin threads break. A portion of the seat backrest which a shoulder portion of a seated occupant contacts, and a portion of the seat backrest which buttocks of the seated occupant contact, are enlarged, and impact force can be damped.

Abstract: This present invention discloses a seat, comprising: a seat cushion; and a seat back frame connected to the seat cushion, the seat back frames being bent in a range of specified bending angle in a direction of moving the top end backward by a backward load over a predetermined value, by way of a joint provided at an intermediate portion in the vertical direction, such that the seat back frame receives a reaction force corresponding to the bending angle.

Abstract: The structure is formed by serially connecting a torsion bar and a coil spring via a arm and a supporting frame to thereby elastically support a flat-type supporting member, and by disposing a cushioning member for seat cushion provided with a spring characteristic closely analogous to a load-to-deflection characteristic (spring characteristic) of the muscle of a human body above the flat-type supporting member. Accordingly, it is possible to make a spring characteristic for working when supporting a load of a human different from a spring characteristic for working when removing vibration even with an extremely simple structure. In other words, the structure has an excellent function to make the spring constant at work when removing vibration, especially when removing a high frequency component.

Abstract: A seat structure includes a torsion bar 40 disposed along the width direction in the vicinity of the bottom end of a back frame 20, a pelvis supporting plate 50 is connected to the torsion bar 40, and a flat-type supporting member 60 for the seat back is engaged with the vicinity of the bottom end of the pelvis supporting plate 50 and strained. Slack of the flat-type supporting member 60 can be eliminated by the pelvis supporting plate 50 to enhance the appearance. Further, a vibration inputted from the seat back side, and vibrates as if patting on the back of the human body can be absorbed by an elastic force of the torsion bar 40.