JPH0192575U

JPH0192575U -

Info

Publication number: JPH0192575U
Application number: JP18903787U
Authority: JP
Priority date: 1987-12-11
Filing date: 1987-12-11
Publication date: 1989-06-16

Description

[Brief explanation of drawings]

第１図は本考案一実施例の圧力制御弁を示す断
面図、第２図は実施例及び従来例のバルブスプー
ル変位量とポート液圧変化量との関係を示すグラ
フ、第３図はソレノイドへの負荷電流とポート液
圧変化量との関係を示すグラフ、第４図は実施例
と従来例のヒステリシス特性を示すグラフである
。１０……バルブボデイ、２０……バルブスプー
ル、２３……第１ランド、２４……第２ランド、
３０……第１ソレノイド（摺動手段）、４０……
第２ソレノイド（摺動手段）、５４……第１出力
回路、５５……第２出力回路、６１……バルブ穴
、６５……第１出力ポート、６６……第２出力ポ
ート、２３１，２３２，２４１，２４２……面取
り部、ａ_１，ａ_２……液圧供給側絞り、ｂ_１，ｂ
_２……ドレーン側絞り。 Fig. 1 is a sectional view showing a pressure control valve according to an embodiment of the present invention, Fig. 2 is a graph showing the relationship between the valve spool displacement amount and the port hydraulic pressure change amount of the embodiment and the conventional example, and Fig. 3 is a solenoid valve. FIG. 4 is a graph showing the relationship between the load current applied to the port and the amount of change in port hydraulic pressure, and FIG. 4 is a graph showing the hysteresis characteristics of the embodiment and the conventional example. 10... Valve body, 20... Valve spool, 23... First land, 24... Second land,
30...first solenoid (sliding means), 40...
Second solenoid (sliding means), 54...first output circuit, 55...second output circuit, 61...valve hole, 65...first output port, 66...second output port, 231,232 , 241, 242... Chamfered portion, a ₁ , a ₂ ... Hydraulic pressure supply side throttle, b ₁ , b
₂ ... Drain side aperture.

Claims

[Claims for Utility Model Registration] A valve body in which a valve hole is formed, and a valve body formed in the valve hole and disposed between a connection part with a hydraulic pressure supply circuit and a connection part with a drain circuit,
A port connected to an output circuit and a land slidably provided in the valve hole and arranged in an underlapping state so as to form a fluid pressure supply side restriction and a drain side restriction between the port and the port. , a valve spool that can adjust the hydraulic pressure of the output circuit by changing the amount of both throttles, a sliding means for applying sliding force to the valve spool, and an edge portion of the valve spool and the valve body forming the both throttles. A pressure control valve comprising: a chamfered portion formed by chamfering with a taper or a radius on at least one side of the pressure control valve.