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1. 发明专利

JP2007120725A Hydraulic shock absorber 审中-公开
标题翻译：液压减震器
公开(公告)号：JP2007120725A
公开(公告)日：2007-05-17
申请号：JP2005317444
申请日：2005-10-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOIZUMI TOSHIHIRO , KIMURA TAKASHI , NAKATATE TAKAO , IMAIZUMI TOMIO , MATSUNO AKIRA , CHIKUMA HIROSHI
IPC分类号： F16F9/348
摘要： PROBLEM TO BE SOLVED: To improve ride quality and driveability of a vehicle by suppressing a sudden change in damping force characteristics in a hydraulic shock absorber.
SOLUTION: A piston 3 with a piston rod 6 connected thereto is slidably fitted into a cylinder 2 filled with oil. The piston 3 is provided with an expanding side oil passage 11 and a seat part 20, and a disk valve 13A having an orifice 13B is seated on the seat part 20. The piston 3 is protrusively provided with a restriction part 22 of circular arc shape facing the outer peripheral part of the disk valve 13A. In a low speed region of piston speed, damping force of orifice characteristics is generated by the orifice 13B, and in a high speed region of piston speed, the disk valve 13A is opened to generate damping force of valve characteristics. The sudden change in damping force characteristics caused by the sudden enlargement of a passage is suppressed by restricting the passage by the restriction part 22 when the disk valve 13A is opened.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过抑制液压缓冲器中的阻尼力特性的突然变化来提高车辆的乘坐质量和驾驶性。解决方案：连接有活塞杆6的活塞3可滑动地装配到充满油的气缸2中。活塞3设置有膨胀侧油路11和座部20，并且具有孔13B的盘阀13A位于座部20上。活塞3突出设置有圆弧形状的限制部22 面对盘阀13A的外周部。在活塞速度的低速区域中，通过节流孔13B产生孔特性的阻尼力，并且在活塞速度的高速区域中，盘阀13A打开以产生阀特性的阻尼力。当盘阀13A打开时，限制通过限制部22的通道来抑制通道突然膨胀引起的阻尼力特性的突然变化。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2007120726A Hydraulic shock absorber 审中-公开
标题翻译：液压减震器
公开(公告)号：JP2007120726A
公开(公告)日：2007-05-17
申请号：JP2005317445
申请日：2005-10-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MATSUNO AKIRA , KIMURA TAKASHI , NAKATATE TAKAO , KOIZUMI TOSHIHIRO , IMAIZUMI TOMIO , CHIKUMA HIROSHI
IPC分类号： F16F9/348
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic shock absorber which can improve the riding comfort and the driveability of a vehicle by suppressing the sudden change of its damping force characteristic.
SOLUTION: A piston 3 connected with a piston rod is fitted in a cylinder filled with working fluid. The piston 3 is provided with a plurality of elongating side oil passages 6 and seat portions 14. Valve body portions 23 formed on the tip end portions of arm portions 22A to 22E of a special shape disk valve 16, the arm portions radially elongating and having different widths, are brought into contact with the respective seats 14. In the low speed range of the piston speed, the damping force of an orifice characteristic is generated by an orifice. In the high speed range of the piston speed, the damping force of a valve characteristic is generated by opening the valve body portions 23. Because the valve body portions 23 are successively opened in order of the width of the arm portions 22A to 22E, the sudden change of the damping force characteristic due to the sudden enlargement of the oil passages can be suppressed.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决问题的方案：提供一种能够通过抑制其阻尼力特性突然变化而提高乘坐舒适性和车辆驾驶性的液压减震器。解决方案：与活塞杆连接的活塞3装配在填充有工作流体的气缸中。活塞3设置有多个伸长侧油路6和座部14.形成在特殊形状盘阀16的臂部22A〜22E的前端部的阀体部23形成为径向伸长并具有不同的宽度与相应的座14接触。在活塞速度的低速范围内，通过孔产生孔特性的阻尼力。在活塞速度的高速范围内，通过打开阀体部23而产生阀特性的阻尼力。由于阀体部23按臂部22A〜22E的宽度顺序依次开口，可以抑制由于油路的突然膨胀引起的阻尼力特性的突然变化。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2009006082A Drum type washing machine and damping force control method of damping mechanism of drum type washing machine 审中-公开
标题翻译：鼓式洗衣机和喷雾式洗衣机阻尼机构的阻尼力控制方法
公开(公告)号：JP2009006082A
公开(公告)日：2009-01-15
申请号：JP2007172687
申请日：2007-06-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOGAWA RYUTA , IMAIZUMI TOMIO
IPC分类号： D06F37/22 , D06F23/02 , D06F33/06 , D06F37/04
摘要： PROBLEM TO BE SOLVED: To provide a drum type washing machine, simplifying a damping mechanism constructed between a water tank housing a rotary drum and a casing in a space-saving manner, and restraining noise in switching the damping force of the damping mechanism, and a damping force control method of a damping mechanism used in the drum type washing machine.
SOLUTION: When the vibrating state of the water tank is in the resonant state, an electromagnetic clutch 23 (an interrupt means) is put in the connecting state to connect a link 21 and a link 22 to each other, thereby causing a damper 17 to work. When the vibration of the water tank is in the stationary state, the electromagnetic clutch 23 is disconnected to break off the link 21 from the link 22, thereby stopping the function of the damper 17. Therefore, a cylinder for switching the damping force of the damping mechanism 1 is not needed to simplify the construction and achieve space-saving. Moreover, a damping force switching type damper is not used so that noise in switching the damping force can be restrained.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种滚筒式洗衣机，简化了以节省空间的方式在容纳旋转滚筒和壳体的水箱之间构造的阻尼机构，并且抑制了阻尼阻尼的阻尼力的转换机构，以及在滚筒式洗衣机中使用的阻尼机构的阻尼力控制方法。解决方案：当水箱的振动状态处于共振状态时，将电磁离合器23（中断装置）置于连接状态以将连杆21和连杆22彼此连接，从而使阻尼器17工作。当水箱的振动处于静止状态时，电磁离合器23被断开以将连杆21从连杆22断开，从而停止阻尼器17的功能。因此，用于切换阻尼器17的阻尼力的气缸阻尼机构1不需要简化施工，节省空间。此外，不使用阻尼力切换型阻尼器，能够抑制切换阻尼力的噪音。版权所有（C）2009，JPO＆INPIT

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