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    • 15. 发明授权
    • Seat structure
    • 座椅结构
    • US06817674B2
    • 2004-11-16
    • US10309605
    • 2002-12-04
    • Etsunori FujitaKazuyoshi ChizukaSeiji KawasakiYumi OguraNaoki OchiaiYasuhide TakataShigeyuki KojimaMiho Kikusui
    • Etsunori FujitaKazuyoshi ChizukaSeiji KawasakiYumi OguraNaoki OchiaiYasuhide TakataShigeyuki KojimaMiho Kikusui
    • A47C702
    • B60N2/42709B60N2/643B60N2/646B60N2/686B60N2/70
    • 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 11 is formed at a seat cushioning member 14 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 14 and/or a back cushioning member 24, 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.
    • 本发明的目的是通过使阻尼比大的反作用力较小来抑制人体的反弹。 凸起部11形成在作为张力结构的座椅缓冲构件14上。 该结构具有通过根据输入振动的激励力的大小由张力结构的平面波产生的变形而改变由应变能和张力的变化起作用的阻尼特性的结构。 因此,由于阻尼特性对于小的励磁力的输入具有小的阻尼比功能,所以能够缓和由于座椅缓冲部件14和/或后缓冲部件24的弹簧特性引起的相位差的振动, 并且通过增加应变能量和张力减小,输入大的励磁力,阻尼特性起着较大的阻尼比和较长的作业时间的作用,能够抑制人体向上的回弹。
    • 18. 发明申请
    • DEVICE FOR ESTIMATING STATE OF LIVING ORGANISM
    • 用于估计生活有机体状况的设备
    • US20130030256A1
    • 2013-01-31
    • US13579575
    • 2011-01-31
    • Etsunori FujitaYumi OguraShinichiro MaedaNaoki OchiaiShigeki Wagata
    • Etsunori FujitaYumi OguraShinichiro MaedaNaoki OchiaiShigeki Wagata
    • A61B5/00
    • A61B5/18A61B5/1102A61B5/113A61B5/4035A61B5/6887A61B5/7239A61B7/00A61B2562/0204
    • A technology to grasp a state of a human being more accurately is provided. The technology is provided with means for acquiring a time-series waveform of a frequency from a time-series waveform of a biological signal sampled from the upper body of a human being and for further acquiring a time-series waveform of frequency slope and a time-series waveform of frequency fluctuation and for applying frequency analysis to them. In the frequency analysis, a power spectrum of each frequency corresponding to a functional adjustment signal, a fatigue reception signal, and an activity adjustment signal, respectively, determined in advance is acquired. Then, a state of a human being is determined from a time-series change of each power spectrum. The fatigue reception signal indicates a degree of progress of fatigue in a usual active state and thus, by comparing it with degrees of predominance of the functional adjustment signal and the activity adjustment signal as their distribution rates, a state of a human being (relaxed state, fatigued state, state in which sympathetic nerve is predominant, a state in which parasympathetic nerve is predominant and the like) can be determined more accurately.
    • 提供了一种更准确地掌握人的状态的技术。 该技术具有用于从从人的上半身采样的生物信号的时间序列波形获取频率的时间序列波形的装置,并且用于进一步获取频率斜率的时间序列波形和时间 - 频率波动的波形和频率分析。 在频率分析中,获取与预先确定的功能调整信号,疲劳接收信号,活动调整信号对应的各频率的功率谱。 然后,根据每个功率谱的时间序列变化来确定人的状态。 疲劳接收信号表示通常的活动状态下的疲劳的进展程度,因此通过将功能调整信号和活动调节信号的优势度作为其分配率进行比较,人的状态(松弛状态 疲劳状态,交感神经占优势的状态,副交感神经为主的状态等)可以更准确地确定。
    • 19. 发明授权
    • Seat structure
    • 座椅结构
    • US07971939B2
    • 2011-07-05
    • US11547329
    • 2005-04-01
    • Etsunori FujitaYumi OguraYoshiyuki Ueno
    • Etsunori FujitaYumi OguraYoshiyuki Ueno
    • B60N2/50
    • B60N2/7094B60N2/70B60N2/7058
    • 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. α waves of 10 Hz to 12 Hz, which occur in a relaxed waking state, are caused in the brain of the sitting person. Vibrations in a resonance frequency region are attenuated in amplitude and transmitted to the sitting person.
    • 提供了一种可以根据长时间的坐骑来改善坐着的人的疲劳的座椅结构。 在车辆用座椅10中,将缓冲材料20的下边缘侧固定在座位框架14的前缘侧的下层片50的后缘侧弹性地连接到后边缘侧 通过可移动框架34和作为弹性构件的扭力杆46来调节座椅框架14。 衬垫材料20具有弹簧零特性,其中支撑坐人的突出部分的部分的弹簧常数小于其他部分的弹簧常数。 该车辆座椅10使通过座位框架14传递到坐着的人的脊柱部分的振动的能量更小,并且其周边部分转换对应于身体的波动的振动,并且通过坐姿部分框架14传送它们 发生在放松的醒来状态的10Hz至12Hz的α波在坐在人的大脑中引起。 谐振频率区域中的振动在幅度上衰减并传递给坐着的人。