Abstract: The occurrence of a sudden change in physical condition is detected. In a physical condition determination device 100, a heart rate-relate index calculation unit 110 specifies an appearance time of a sign of a sudden change in heart rate, from a time-series waveform of an index corresponding to a variation in the heart rate (heart rate-related index) and a blood pressure-related index calculation unit 120 specifies an appearance time of a sign of a sudden change in blood pressure, from a time-series waveform of an index corresponding to a variation in the blood pressure (blood pressure-related index). A physical condition sudden change determination unit 130 determines that a sudden change in physical condition (physical condition sudden change) has occurred in a case where these appearance times are both within a predetermined time.

Abstract: Blood pressure is estimated in a non-constraining manner continuously and in real time. A biological signal collected from a person's dorsal part is analyzed, vibration in the human body ascribable to a blood flow rate change in a period from the ventricular filling period to the isovolumetric systole is captured, and the state of fluctuation of an index indicating the state of the in vivo vibration is further captured. This fluctuation index correlates with a person's blood pressure. Therefore, it is possible to estimate whether the blood pressure is in a range indicating a normal-range blood pressure or in a range indicating a high blood pressure, only by having the person sit or lie supine on a surface provided with a biological signal measurement device to measure a biological signal in a non-constraining manner, so as to make the biological signal measurement device contiguous with the person's dorsal part.

Abstract: To make it possible to grasp a biological condition, in particular, a condition ascribable to the movement of the heart. According to the embodiments, it is possible to find a boundary frequency between cardiac apex beat and heart sound. This makes it possible to find not only heart sound, but also cardiac apex beat, from a biological signal which is a collection of biological sound and in-vivo vibration. The boundary frequency is represented by a quadratic function of heart rate, and the use of correlation data based on the quadratic function makes it possible to find heart rate or a boundary frequency in real time. As a result, for example, if heart rate is known, the level of a boundary frequency is known. This facilitates inferring a health condition, for example, whether or not the heart is under stress, from a broader viewpoint than conventionally.

Abstract: A server (100) includes a storage control unit (102) causing a ticket to be stored in association with service information that can be received when the ticket is purchased and a display control unit (104) causing a display unit to display a screen for accepting an operation by a user, wherein the display control unit (104) causes a display unit to display a selection screen for accepting selection of the service information associated with the ticket when accepting selection of the ticket as a purchase target, and computes a settlement amount of the selected service information and the selected ticket and causes the display unit to display a settlement amount screen, and, after completion of a settlement procedure for the settlement amount, the storage control unit (102) causes the ticket and the service information for which the settlement procedure is completed to be stored in association with the user.

Abstract: There are improved a vibration absorption characteristic and an impact absorption characteristic. In a suspension mechanism 1 of the present invention, first and second dampers (150, 160) are suspended in parallel between an upper frame (120) and a lower frame (110) 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 (120) and the lower frame (110) 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.

Abstract: The operation in a closing direction and the operation in an opening direction of a storage rack are performed efficiently with small force. Fixed frames and a storage rack are connected by link mechanisms, and the link mechanism includes fixed-side links linked to the fixed frame and movable-side links linked to the storage rack. When a position of one ends of the movable-side links is located closer to one ends of the fixed-side links than a balanced point, the elastic member biases the storage rack in an open-position direction. In the open position, since the elastic member biases the storage rack in the opening direction, an open state is maintained as long as the position of the one ends of the movable-side links does not return to the change point position. Accordingly, the open position can be held by a simple structure without using electric power.

Abstract: To cause an appropriate damping force to work according to a relative displacement with a simple configuration. A movable inner cylinder 3 slidable in an outer cylinder 2 in an axial direction and having orifices 31 formed in its peripheral wall 31 is provided, a piston 5 around which a linear member 52 that generates a frictional force is wound is further provided in the movable inner cylinder 3, and a viscous liquid 7 is filled in the outer cylinder 2 including the inside of the movable inner cylinder 3. Accordingly, when the piston 5 moves together with the movable inner cylinder 3, a high damping force is not exerted, whereas when the piston 5 relatively moves in the movable inner cylinder 3, the high damping force is exerted owing to viscous friction between the piston 5 and the movable inner cylinder 3 and the viscous resistance of the viscous liquid passing through the orifices.

Abstract: To reduce an operation synchronization failure of recliners on both sides of a seat frame, thereby enabling smoother operation despite variations in the dimensional accuracy of the seat frame. A seat recliner structure includes: recliners which are provided on the left and right sides of a cushion frame and a back frame to recline the back frame relative to the cushion frame; and a connecting rod which connects the left and right recliners to synchronize them, wherein the left and right recliners have different backlashes, and the backlash of the driving-side recliner is smaller than the backlash of the driven-side recliner.

Abstract: The occurrence of a sudden change in physical condition is detected. In a physical condition determination device 100, a heart rate-relate index calculation unit 110 specifies an appearance time of a sign of a sudden change in heart rate, from a time-series waveform of an index corresponding to a variation in the heart rate (heart rate-related index) and a blood pressure-related index calculation unit 120 specifies an appearance time of a sign of a sudden change in blood pressure, from a time-series waveform of an index corresponding to a variation in the blood pressure (blood pressure-related index). A physical condition sudden change determination unit 130 determines that a sudden change in physical condition (physical condition sudden change) has occurred in a case where these appearance times are both within a predetermined time.

Abstract: By promoting air circulation, heat and humidity are reduced more efficiently. A vehicle seat ventilation mechanism includes: a body case which is provided in a cushioning material of at least one of a seat cushion and a seat back and whose interior is an air circulation space; a fan disposed in the body case; and an exhaust port which is provided at a position apart from the fan and discharges an air stream created by air suction by the fan. The air stream enhances the comfort of a microclimate condition on a vehicle seat side which is a rear side of a contact surface, and with this microclimate condition, a thermal environment on a seat occupant side having an increased causal factor of discomfort is replaced, thereby making it possible to enhance the comfort of the clothing microclimate.

Abstract: There are provided a biological signal measurement device capable of obtaining a variety of biological information and applicable also to medical fields and the like, a biological state inference device, and a biological state inference system using these. The biological signal measurement device 1 of the present invention includes three biological signal detection units, namely, a left upper part biological signal detection unit 11, a right upper part biological signal detection unit 12, and a lower part biological signal detection unit 13. The biological state inference device 1 is capable of obtaining a highly precise inference-use processed waveform from which electrical noise has been removed, by using an appropriate combination of time-series data obtained from the three biological signal detection units 11 to 13.

Abstract: There are improved a vibration absorption characteristic and an impact absorption characteristic. In a suspension mechanism 1 of the present invention, first and second dampers (150, 160) are suspended in parallel between an upper frame (120) and a lower frame (110) 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 (120) and the lower frame (110) 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.

Abstract: A damper includes: a line-shaped member wound around an outer peripheral surface of a piston which makes a relative motion in a cylinder; and a viscous fluid made to adhere to the line-shaped member and exhibiting viscous damping force. The relative motion of the cylinder and the piston produces tension, and in the line-shaped member, as an amplitude is smaller, its contiguously wound portions each try to deform to twist along a circumferential direction of the line-shaped member itself, and as the amplitude is larger, the contiguously wound portions try to deform as a unit. When the amplitude is small, frictional resistance decreases, resulting in smooth motion of the piston, and appropriate damping force is obtained due to the viscous damping force of the viscous fluid. When the amplitude is large, as a result of the increased tendency that the contiguously wound portions of the line-shaped member try to deform as a unit, friction damping force acts relatively greatly.

Abstract: By promoting air circulation, heat and humidity are reduced more efficiently. A vehicle seat ventilation mechanism includes: a body case which is provided in a cushioning material of at least one of a seat cushion and a seat back and whose interior is an air circulation space; a fan disposed in the body case; and an exhaust port which is provided at a position apart from the fan and discharges an air stream created by air suction by the fan. The air stream enhances the comfort of a microclimate condition on a vehicle seat side which is a rear side of a contact surface, and with this microclimate condition, a thermal environment on a seat occupant side having an increased causal factor of discomfort is replaced, thereby making it possible to enhance the comfort of the clothing microclimate.

Abstract: Blood pressure is estimated in a non-constraining manner continuously and in real time. A biological signal collected from a person's dorsal part is analyzed, vibration in the human body ascribable to a blood flow rate change in a period from the ventricular filling period to the isovolumetric systole is captured, and the state of fluctuation of an index indicating the state of the in vivo vibration is further captured. This fluctuation index correlates with a person's blood pressure. Therefore, it is possible to estimate whether the blood pressure is in a range indicating a normal-range blood pressure or in a range indicating a high blood pressure, only by having the person sit or lie supine on a surface provided with a biological signal measurement device to measure a biological signal in a non-constraining manner, so as to make the biological signal measurement device contiguous with the person's dorsal part.

Abstract: A seat cushion part includes a base fabric extending between and looped around a front edge frame and a rear edge frame, and having an upper layer part and a lower layer part which are provided apart from each other in an up-down direction. Wire members of metal are provided respectively on side edge portions of the base fabric, and coil springs are spring members each extending between an end portion of the wire member and the front edge frame or the rear edge frame. A load further applied due to vibration, impact, and so on causes the upper layer part to come into contact with the lower layer part to also displace the lower layer part in the up-down direction. Consequently, the coil springs connected through the wire members extend/contract, and their elastic force acts.

Abstract: A damper includes: a line-shaped member wound around an outer peripheral surface of a piston which makes a relative motion in a cylinder; and a viscous fluid made to adhere to the line-shaped member and exhibiting viscous damping force. The relative motion of the cylinder and the piston produces tension, and in the line-shaped member, as an amplitude is smaller, its contiguously wound portions each try to deform to twist along a circumferential direction of the line-shaped member itself, and as the amplitude is larger, the contiguously wound portions try to deform as a unit. When the amplitude is small, frictional resistance decreases, resulting in smooth motion of the piston, and appropriate damping force is obtained due to the viscous damping force of the viscous fluid. When the amplitude is large, as a result of the increased tendency that the contiguously wound portions of the line-shaped member try to deform as a unit, friction damping force acts relatively greatly.

Abstract: To make it possible to improve seated person's posture stability with respect to input vibration, and more improve a vibration absorption characteristic or an impact absorption characteristic caused by impact vibration as compared with conventional ones. A suspension mechanism 1 has a structure in which two suspension units 100, 200 which support a movable support part 140 and a seat support part 240 through link mechanisms 110, 120 respectively are arranged in two upper and lower stages, and a configuration such that, when the movable support part 140 and the seat support part 240 move up and down relatively in response to input vibration, the two link mechanisms 110, 210 supporting the respective parts are operated to rotate in opposite directions to each other.

Abstract: A seat cushion part includes a base fabric extending between and looped around a front edge frame and a rear edge frame, and having an upper layer part and a lower layer part which are provided apart from each other in an up-down direction. Wire members of metal are provided respectively on side edge portions of the base fabric, and coil springs are spring members each extending between an end portion of the wire member and the front edge frame or the rear edge frame. A load further applied due to vibration, impact, and so on causes the upper layer part to come into contact with the lower layer part to also displace the lower layer part in the up-down direction. Consequently, the coil springs connected through the wire members extend/contract, and their elastic force acts.

Abstract: The present invention is configured to compare an output result of frequency analysis of a frequency gradient time-series waveform of a biosignal with preset corresponding data of output results of brain waves of different biological states to the output result. Accordingly, it is possible to estimate a time-series variation of a biological state which is specified by a brain wave state and brain waves by using a biological index other than brain waves, in particular, a result of frequency analysis of a frequency gradient time-series waveform of a biosignal reflecting an autonomic nervous function. Using an electroencephalograph is not required, and thus it is possible to estimate brain waves and a biological state corresponding to brain waves easily and rapidly.