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公开(公告)号：US09428030B2
公开(公告)日：2016-08-30
申请号：US14778326
申请日：2014-03-20
发明人： Takashi Teraoka , Tatsuya Masamura
CPC分类号： B60G17/08 , B60G13/08 , B60G2202/24 , B60G2500/114 , B60G2600/182 , F16F9/187 , F16F9/5126 , F16F9/5165 , F16F2222/12 , F16F2228/066
摘要： A shock absorber includes a suction passage allowing flow only from a reservoir towards a pressure side chamber, a rectifying passage allowing flow only from the pressure side chamber towards an expansion side chamber, and a damping force variable valve allowing flow only from the expansion side chamber towards the reservoir. Large, and small and outer peripheral chambers in a bottom housing sandwich a free piston. The small chamber communicates the outer peripheral chamber with the expansion side chamber. The large chamber communicates with the pressure side chamber through first and second valves. During a contraction in which a piston moves downward, even in a uniflow-type shock absorber in which pressure in the expansion side chamber and the pressure side chamber become equal, the free piston can move downward due to a difference in pressure-receiving areas. Even if a stretching speed reaches a high range, the first and second valves are opened, and damping force is reduced.
摘要翻译： 减震器包括仅允许从储存器流向压力侧室的抽吸通道，仅允许从压力侧室朝向膨胀侧室流动的整流通道和仅允许从膨胀侧室流动的阻尼力可变阀 朝向水库 底部壳体中的大的和小的外周室夹着自由活塞。 小室将外周室与膨胀侧室连通。 大室通过第一和第二阀与压力侧室连通。 在活塞向下移动的收缩期间，即使在膨胀侧室和压力侧室中的压力相等的单向减震器中，由于受压面积的差异，自由活塞也能向下移动。 即使拉伸速度达到高范围，第一和第二阀打开，并且阻尼力降低。
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公开(公告)号：US20150184716A1
公开(公告)日：2015-07-02
申请号：US14419585
申请日：2013-08-02
发明人： Takashi Teraoka
CPC分类号： F16F9/585 , F16F9/18 , F16F9/5126
摘要： A shock absorber including a cylinder, a piston, a piston rod, and a damping passage communicating an expansion-side chamber with a compression-side chamber, includes a pressure chamber formed by a cylindrical housing provided on the expansion-side chamber side of the piston rod from the piston and a piston holder to which the piston is mounted and which closes the opening of the housing, a free piston slidably inserted inside the housing and which divides the pressure chamber into an expansion-side pressure chamber communicating with the expansion-side chamber via an expansion-side channel and a compression-side pressure chamber communicating with the compression-side chamber via a compression-side channel, and a spring element that generates energizing force for restraining displacement of the free piston with respect to the pressure chamber.
摘要翻译： 包括气缸，活塞，活塞杆和将膨胀侧室与压缩侧室连通的缓冲通道的减震器包括由设置在膨胀侧室的膨胀侧室侧的圆筒形壳体形成的压力室 来自活塞的活塞杆和活塞被安装到活塞上并封闭壳体的开口的活塞杆;可滑动地插入壳体内的自由活塞，并且将压力室分成与膨胀侧压力室连通的膨胀侧压力室， 经由压缩侧通道与压缩侧室连通的膨胀侧通道和压缩侧压力室;弹簧元件，其产生用于抑制自由活塞相对于压力室的位移的作用力 。
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公开(公告)号：US20150008081A1
公开(公告)日：2015-01-08
申请号：US14380185
申请日：2013-02-18
发明人： Keiji Saito , Kazuhisa Nakamura , Takashi Teraoka
CPC分类号： F16F9/535 , F16F9/3214
摘要： A magnetorheological fluid shock absorber includes a piston slidably arranged in a cylinder in which magnetorheological fluid whose viscosity changes by the action of a magnetic field is sealed. The piston includes a piston core which is attached to an end part of the piston rod and on the outer periphery of which a coil is provided, a flux ring which surrounds the outer periphery of the piston core and forms a flow passage for the magnetorheological fluid between the piston core and the flux ring, a plate which is annularly formed, arranged on the outer periphery of the piston rod and attached to one end of the flux ring, and a stopper whose axial position is specified with respect to the piston rod and which sandwiches the plate between the piston core and the stopper.
摘要翻译： 磁流变液体缓冲器包括可滑动地布置在气缸中的活塞，其中通过磁场的作用粘度改变的磁流变流体被密封。 活塞包括附接到活塞杆的端部并且在其外周上设置有线圈的活塞芯，围绕活塞芯的外周并形成用于磁流变流体的流动通道的磁通环 在活塞芯和磁通环之间，形成有环状地设置在活塞杆的外周并且附接到磁通环的一端的板，以及相对于活塞杆规定的轴向位置的止动件， 其将板夹在活塞芯和止动器之间。
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公开(公告)号：US09970505B2
公开(公告)日：2018-05-15
申请号：US14778213
申请日：2014-03-20
发明人： Takashi Teraoka , Tatsuya Masamura
CPC分类号： F16F9/5165 , F16F9/061 , F16F9/187 , F16F9/34 , F16F9/5126
摘要： Shock absorber including a suction passage allowing flow only from a reservoir towards a pressure side chamber, a rectifying passage allowing flow only from the pressure side chamber towards an expansion side chamber, and a damping force variable valve allowing flow only from the expansion side chamber towards the reservoir. A large pressure-side pressure chamber communicating with the pressure side chamber, and an outer peripheral expansion-side pressure chamber communicating with the expansion side chamber sandwich a free piston slidably moving within a bottom housing forming a pressure chamber. Because a pressure-side pressure-receiving area of the free piston is larger than an expansion-side pressure-receiving area in a contraction operation in which a piston moves downward, the free piston can move downward even in a uniflow-type shock absorber in which pressure in the expansion side and pressure side chambers become equal whereby damping force can be reduced during an input of high-frequency vibration.
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公开(公告)号：US09840123B2
公开(公告)日：2017-12-12
申请号：US14777759
申请日：2014-03-20
发明人： Takashi Teraoka , Tatsuya Masamura
IPC分类号： B60G17/08 , B60G15/06 , B60G13/08 , F16F9/32 , F16F9/34 , F16F9/53 , F16F13/00 , F16F9/512 , F16F9/516 , F16F9/18
CPC分类号： B60G15/061 , B60G13/08 , B60G17/08 , B60G2202/12 , B60G2202/24 , B60G2204/424 , B60G2204/45 , B60G2600/182 , B60G2600/44 , F16F9/187 , F16F9/3214 , F16F9/34 , F16F9/5126 , F16F9/5165 , F16F9/53 , F16F13/007
摘要： A shock absorber includes a suction passage permitting flow only from a reservoir toward a compression-side chamber, a rectification passage permitting flow only from the compression-side chamber toward an extension-side chamber, and a variable valve permitting flow only from the extension-side chamber toward the reservoir. A large chamber as a compression-side pressure chamber communicating with the compression-side chamber and an outer periphery chamber as an extension-side pressure chamber communicating with the extension-side chamber are partitioned in the shock absorber by a free piston that moves slidably within a bottom member serving as a housing. A compression-side pressure-receiving area of the free piston is larger than an extension-side pressure-receiving area. Therefore, even in the uniflow shock absorber with the extension-side chamber and the compression-side chamber at equal pressures during the contraction operation, the damping force is reduced under conditions in which high frequency is input since the free piston moves downward.
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公开(公告)号：US09797465B2
公开(公告)日：2017-10-24
申请号：US14442483
申请日：2014-03-10
发明人： Keiji Saito , Kazuhisa Nakamura , Takashi Teraoka
CPC分类号： F16F9/3214 , F16F9/19 , F16F9/535 , F16F2222/06 , F16F2224/045 , F16F2228/066
摘要： A piston of a magnetorheological fluid shock absorber is provided with a piston core having a small diameter portion mounted on an end portion of the piston rod, an enlarged diameter portion formed continuously in an axial direction with a diameter larger than the small diameter portion and forming a stepped portion, and a large diameter portion formed continuously in the axial direction with a diameter larger than the enlarged diameter portion and having a coil; a ring body surrounding the outer periphery of the piston core and forming a flow passage of the magnetorheological fluid between itself and the large diameter portion; a plate formed annularly and arranged on the outer periphery of the small diameter portion and mounted on one end of the ring body; and a stopper mounted on the small diameter portion and sandwiching the plate between the stopper and the stepped portion.
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公开(公告)号：US09217486B2
公开(公告)日：2015-12-22
申请号：US14379173
申请日：2013-02-18
发明人： Keiji Saito , Kazuhisa Nakamura , Takashi Teraoka
摘要： A magnetorheological fluid shock absorber includes a piston slidably arranged in a cylinder in which magnetorheological fluid is sealed. The piston includes a piston core which is attached to an end part of a piston rod and on the outer periphery of which a coil is provided, a flux ring which surrounds the outer periphery of the piston core and forms a flow passage for the magnetorheological fluid between the piston core and the flux ring, a first plate which is arranged on the outer periphery of the piston rod and specifies the position of one end of the flux ring in an axial direction with respect to the piston core, a second plate which is arranged on the inner periphery of the other end of the flux ring, and a first snap ring which is fitted to the inner periphery of the flux ring and fixes the second plate.
摘要翻译： 磁流变液体缓冲器包括可滑动地布置在其中密封磁流变流体的气缸中的活塞。 活塞包括附接到活塞杆的端部并且在其外周上设置有线圈的活塞芯，包围活塞芯的外周并形成用于磁流变流体的流动通道的磁通环 在所述活塞芯和所述磁通环之间设置有第一板，所述第一板布置在所述活塞杆的外周上并指定所述磁通环的一端相对于所述活塞芯在轴向方向上的位置;第二板， 布置在磁通环的另一端的内周上，以及第一卡环，其配合到磁通环的内周并固定第二板。
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公开(公告)号：US20150210136A1
公开(公告)日：2015-07-30
申请号：US14431772
申请日：2013-09-24
CPC分类号： B60G13/08 , F16F9/348 , F16F9/3487 , F16F9/3488 , F16F9/5165
摘要： A shock absorber includes a cylinder, a piston, a piston rod, an expansion-side passage that allows a fluid to flow only from an expansion-side chamber toward a contraction-side chamber, a contraction-side passage that allows the fluid to flow only from the contraction-side chamber toward the expansion-side chamber, an expansion-side damping valve that applies resistance to a flow of fluid passing through the expansion-side passage, a contraction-side damping valve that applies resistance to a flow of fluid passing through the contraction-side passage, an expansion-side bypass passage that connects the expansion-side chamber to the contraction-side chamber, an expansion-side relief valve that is opened by pressure in the expansion-side chamber so as to open the expansion-side bypass passage, a contraction-side bypass passage that connects the expansion-side chamber to the contraction-side chamber, and a contraction-side relief valve that is opened by pressure in the contraction-side chamber so as to open the contraction-side bypass passage.
摘要翻译： 减震器包括缸体，活塞，活塞杆，允许流体仅从膨胀侧室朝向收缩侧室流动的膨胀侧通道，允许流体流动的收缩侧通道 仅从收缩侧室朝向膨胀侧室的膨胀侧阻尼阀，对通过膨胀侧通路的流体的流动施加阻力的收缩侧阻尼阀，对流体流动施加阻力 通过收缩侧通道，将膨胀侧室与收缩侧室连接的膨胀侧旁通通道，膨胀侧安全阀，其在膨胀侧室中通过压力而打开，以便打开 膨胀侧旁通通道，将膨胀侧室与收缩侧室连接的收缩侧旁通路和收缩侧旁通通路，该收缩侧旁通通路在收缩侧ch 琥珀色以打开收缩侧旁路通道。
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公开(公告)号：US20150021130A1
公开(公告)日：2015-01-22
申请号：US14379173
申请日：2013-02-18
发明人： Keiji Saito , Kazuhisa Nakamura , Takashi Teraoka
摘要： A magnetorheological fluid shock absorber includes a piston slidably arranged in a cylinder in which magnetorheological fluid is sealed. The piston includes a piston core which is attached to an end part of a piston rod and on the outer periphery of which a coil is provided, a flux ring which surrounds the outer periphery of the piston core and forms a flow passage for the magnetorheological fluid between the piston core and the flux ring, a first plate which is arranged on the outer periphery of the piston rod and specifies the position of one end of the flux ring in an axial direction with respect to the piston core, a second plate which is arranged on the inner periphery of the other end of the flux ring, and a first snap ring which is fitted to the inner periphery of the flux ring and fixes the second plate.
摘要翻译： 磁流变液体缓冲器包括可滑动地布置在其中密封磁流变流体的气缸中的活塞。 活塞包括附接到活塞杆的端部并且在其外周上设置有线圈的活塞芯，包围活塞芯的外周并形成用于磁流变流体的流动通道的磁通环 在所述活塞芯和所述磁通环之间设置有第一板，所述第一板布置在所述活塞杆的外周上并指定所述磁通环的一端相对于所述活塞芯在轴向方向上的位置;第二板， 布置在磁通环的另一端的内周上，以及第一卡环，其配合到磁通环的内周并固定第二板。
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