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公开(公告)号：US20180355941A1
公开(公告)日：2018-12-13
申请号：US15779373
申请日：2016-11-16
发明人： Osamu YUNO , Yasuhiro AOKI
CPC分类号： F16F9/3214 , F16F9/34 , F16F9/3487 , F16F9/368 , F16F9/46 , F16F9/461 , F16F9/464 , F16F9/5126
摘要： A damping force control type shock absorber capable of achieving both air bleeding performance and damping force responsiveness at reduced cost. When a pilot valve (47) is closed during the extension stroke of a piston rod (6), a cylinder upper chamber (2A) is communicated with a back-pressure chamber (46) through a passage (73) including an orifice (76), a communicating passage (70), a pilot chamber (33), and a communicating passage (50). At this time, the cylinder upper chamber (2A) is not communicated with a cylinder lower chamber (2B); therefore, damping force responsiveness is ensured. Further, because there is no need to provide a check valve in the passage, it is possible to suppress an increase in manufacturing cost. Further, air entering the pilot chamber (33) moves upward through the communicating passage (70). Therefore, the air can be discharged into the cylinder upper chamber (2A) through the passage (73).
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公开(公告)号：US20180320751A1
公开(公告)日：2018-11-08
申请号：US15740651
申请日：2016-08-18
发明人： Kosuke KADOKURA , Yasuhiro AOKI , Yusei KIMURA
CPC分类号： F16F9/325 , F16F9/0472 , F16F9/523 , F16F9/532 , F16F13/30
摘要： Electro-rheological fluid serving as working fluid (2) is filled in a shock absorber (1). The shock absorber (1) is configured to control a generated damping force by generating an electric potential difference in an electrode passage (19) and controlling viscosity of the electro-rheological fluid which passes through the electrode passage (19). An adjusting valve (21) configured to generate a damping force is provided on a downstream side of the electrode passage (19). An orifice area, a spring stiffness, a port area, and the like of the adjusting valve (21) can be adjusted (changed) in accordance with a type, specifications, and the like of a vehicle in which the shock absorber (1) is installed. As a result, the damping force characteristic can be tuned as desired by a method other than adjustment of the damping force through voltage adjustment when the working fluid (2) passes through the electrode passage (19).
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公开(公告)号：US20200284313A1
公开(公告)日：2020-09-10
申请号：US16494851
申请日：2018-03-13
发明人： Yasuhiro AOKI
摘要： Electrorheological fluid is loaded in a shock absorber 1 as hydraulic fluid 2. The shock absorber 1 controls a generated damping force by producing a potential difference in an electrode passage 19 to thus change viscosity of electrorheological fluid flowing in the electrode passage 19. A plurality of partition walls 20 is provided in the electrode passage 19 formed between an inner tube 3 and an electrode tube 18. Due to this configuration, a plurality of helical flow passages 24 is formed in the electrode passage 19. In this case, the flow passages 24 are each provided with a flow passage cross-sectional area change portion that allows the flow passage 24 to have a larger cross-sectional area on one side spaced apart from an entrance 24A1 side (an intermediate region F) at least compared to the entrance 24A1 side of the extension-side flow passage 24 (an inflow region E).
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公开(公告)号：US20190056009A1
公开(公告)日：2019-02-21
申请号：US16079803
申请日：2017-02-23
发明人： Yasuhiro AOKI , Osamu YUNO , Umi TANABE
摘要： A cylinder device that enables both prevention of leakage from a flow channel and improvement of assemblability. A shock absorber is filled with an electrorheological fluid as a hydraulic fluid. The shock absorber generates a potential difference within an electrode path and controls viscosity of the electrorheological fluid passing through the electrode path, thus controlling a generated damping force. A plurality of partition walls are disposed between an inner cylinder and an electrode tube. A plurality of spiral flow channels are formed between the inner cylinder and the electrode tube. The partition walls are attached to the outer peripheral surface of the inner cylinder. The partition walls have a sectional shape in which an electrode tube side is smaller in wall thickness than an inner cylinder side. The partition walls include a pointed tip on the non-attached side, which is oriented to a high pressure side of the flow channels.
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公开(公告)号：US20150066243A1
公开(公告)日：2015-03-05
申请号：US14469048
申请日：2014-08-26
IPC分类号： B60W40/13
CPC分类号： B60W40/13 , B60W10/22 , B60W30/045 , B60W2710/223 , B60W2710/226
摘要： A tire load calculation section of a controller calculates tire load factors of the respective wheels. A target tire load-factor calculation section calculates a tire load factor average value (ηave) obtained by averaging the tire load factors (ηi) of the respective wheels as a target tire load factor. A target tire vertical-load calculation section calculates target tire vertical loads (Fzrefi) for the respective wheels so that the tire load factors of the respective wheels become equal to the tire load factor average value. A vertical-load control section and a suspension control section control thrusts of electromagnetic dampers for the respective wheels so as to achieve the target tire vertical loads.
摘要翻译： 控制器的轮胎负荷计算部分计算各车轮的轮胎负荷系数。 目标轮胎负荷因子计算部计算通过将各车轮的轮胎负荷系数（＆eegr i）求平均值作为目标轮胎负荷因子得到的轮胎负荷因子平均值（＆egr。ave）。 目标轮胎垂直载荷计算部分计算各轮的目标轮胎垂直载荷（Fzrefi），使得各个车轮的轮胎负载系数等于轮胎负载因子平均值。 垂直负载控制部分和悬架控制部分控制相应车轮的电磁阻尼器的推力，以实现目标轮胎垂直载荷。
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