JPH0419965U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面第１図はこの考案の第１実施例を示す断面
図、第２，３図は第２，３実施例の要部の断面図
、第４図は第４実施例の要部断面図、第５図は第
４実施例に対する従来例を示した要部断面図、第
６図は差面積形リリーフ弁の従来例の断面図であ
る。 ｂ……本体、１６……シート部、１７……シー
ト部材、１９……ガイド孔、ａ……ポペツト部材
、２０……ガイド部、２２……中空部、２３……
ポペツト部、２４……オリフイス、２５……プツ
シヤ、２６……球状部、３１……スプリング室、
３３……スプリング。 Figure 1 is a sectional view showing the first embodiment of this invention, Figures 2 and 3 are sectional views of the main parts of the second and third embodiments, and Figure 4 is a sectional view of the main parts of the fourth embodiment. FIG. 5 is a sectional view of a main part showing a conventional example of the fourth embodiment, and FIG. 6 is a sectional view of a conventional example of a differential area type relief valve. b...Main body, 16...Seat portion, 17...Sheet member, 19...Guide hole, a...Poppet member, 20...Guide portion, 22...Hollow portion, 23...
Poppet part, 24... Orifice, 25... Pusher, 26... Spherical part, 31... Spring chamber,
33...Spring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ポペツト部、ガイド部及びこれらポペツト部と
ガイド部とを結ぶ通路にオリフイスを有するポペ
ツト部材を備え、上記ガイド部を本体に形成した
ガイド孔に挿入して、このガイド部先端をスプリ
ング室に臨ませるとともに、このスプリング室に
設けたスプリングのばね力をポペツト部材に作用
させ、ポペツト部をシート部材に形成したシート
部に圧接させ、かつ、シート部側の受圧面積に対
して、スプリング室側の受圧面積を小さくした差
面積形リリーフ弁において、ポペツト部材のガイ
ド部を中空にし、この中空部にプツシヤを挿入し
、このプツシヤの一端をスプリング室に臨ませて
上記スプリングのばね力を作用させるとともに、
プツシヤの他端を球面状にしてポペツト部材の中
空部の底面に圧接させたことを特徴とする差面積
形リリーフ弁。 A poppet member having an orifice in a poppet portion, a guide portion, and a passage connecting these poppet portions and the guide portion, the guide portion is inserted into a guide hole formed in the main body, and the tip of the guide portion faces the spring chamber. At the same time, the spring force of the spring provided in this spring chamber is applied to the poppet member, and the poppet portion is brought into pressure contact with the seat portion formed on the seat member, and the pressure receiving area on the spring chamber side is In the differential area type relief valve with a reduced area, the guide portion of the poppet member is made hollow, a pusher is inserted into the hollow portion, and one end of the pusher is made to face the spring chamber to apply the spring force of the spring.
A differential area type relief valve characterized in that the other end of the pusher is spherical and pressed against the bottom surface of a hollow part of a poppet member.