公开(公告)号：US4917139A

公开(公告)日：1990-04-17

申请号：US368812

申请日：1989-06-20

申请人： Tadataka Narumi ,  Ryutaro Abe ,  Susumu Honaga ,  Yoshiyuki Toyama

发明人： Tadataka Narumi ,  Ryutaro Abe ,  Susumu Honaga ,  Yoshiyuki Toyama

IPC分类号： B62D5/07 ,  B62D5/06

CPC分类号： B62D5/06 ,  B62D5/061 ,  Y10T137/2562 ,  Y10T137/2579

摘要： There is disclosed a flow control apparatus for a power steering device in which an operating fluid discharged from a pump is delivered to a power steering device through a restricted passage, and the fluid flow is adjusted by a spool valve movable in response to the pressure difference across the restricted passage. The spool valve contains a first relief valve operating at a first setting pressure in response to the fluid pressure transmitted from a passage located at the downstream side of the restricted passage through a connecting passage. The spool valve also contains a second relief valve operating at a second setting pressure higher than the first setting pressure, but lower than a allowable maximum load pressure, in response to the fluid pressure directly transmitted from a chamber located at the upstream side of the restricted passage. During operations under normal temperature conditions, the first relief valve operates when the load pressure reaches the first setting pressure. Under low temperature conditions, the second relief valve first operates at the second setting pressure, and then the first relief valve operates in order to reduce the fluid pressure to the first setting pressure. With this operation, the fluid pressure delivered to the power steering device is maintained not to exceed the maximum load pressure even under low temperature condition.

摘要翻译： 公开了一种用于动力转向装置的流量控制装置，其中从泵排出的工作流体通过限制通道被输送到动力转向装置，并且流体流量由可根据压力差移动的滑阀调节 跨限制通道 滑阀包含响应于从限制通道的下游侧的通道通过连接通道传递的流体压力而在第一设定压力下操作的第一安全阀。 滑阀还包含第二安全阀，其操作在高于第一设定压力的第二设定压力下，但是响应于从位于受限制的上游侧的室直接传递的流体压力而低于允许的最大负载压力 通道。 在常温条件下运行时，当负载压力达到第一设定压力时，第一安全阀工作。 在低温条件下，第二安全阀首先在第二设定压力下操作，然后第一安全阀工作，以将流体压力降低到第一设定压力。 通过该操作，即使在低温条件下，输送到动力转向装置的流体压力也不会超过最大负载压力。

公开(公告)号：US5513675A

公开(公告)日：1996-05-07

申请号：US199935

申请日：1994-02-22

申请人： Yoshiyuki Toyama ,  Yoshiyuki Takeuchi ,  Syuzi Takagi ,  Hirotune Suzuki ,  Mikio Nakajima

发明人： Yoshiyuki Toyama ,  Yoshiyuki Takeuchi ,  Syuzi Takagi ,  Hirotune Suzuki ,  Mikio Nakajima

IPC分类号： F16L13/14 ,  F16L11/12 ,  F16L11/20 ,  F16L33/20 ,  F16L55/04 ,  F16L55/10

CPC分类号： F16L55/04 ,  F16L11/12 ,  F16L11/20

摘要： A pressurized fluid supply hose which conducts pressurized fluid discharged from a pump to a fluidically operated device is disclosed. A spiral tube formed by two spirally wound band members is fixed by caulking in one end of a steel pipe. The outer shape of the one end of the steel pipe includes a taper portion formed to slope gradually between a thin portion and an outer diameter portion. By effecting a caulking process with a caulking tool having a pressing portion extending in parallel to an outer surface of the steel pipe, the outer taper portion of the steel pipe is contracted to formed an inner taper portion at an internal surface thereof, and one end of the spiral tube is fixed to the inner taper portion. Because the spiral tube is gradually deformed along the inner taper portion of the steel pipe, it can avoided that a large clearance is formed between the two band members of the spiral tube.

摘要翻译： 公开了将从泵排出的加压流体传导到流体操作装置的加压流体供应软管。 由两个螺旋缠绕带部件形成的螺旋管通过在钢管的一端中的铆接而固定。 钢管的一端的外形包括形成为在薄部分和外径部分之间逐渐倾斜的锥形部分。 通过利用具有与钢管的外表面平行延伸的按压部的铆接工具进行铆接处理，钢管的外锥形部收缩，在其内表面形成内锥形部， 的螺旋管固定在内锥形部分上。 因为螺旋管沿着钢管的内锥部逐渐变形，所以能够避免在螺旋管的两个带状部件之间产生大的间隙。