JPH0272880U

JPH0272880U -

Info

Publication number: JPH0272880U
Application number: JP15157988U
Authority: JP
Priority date: 1988-11-21
Filing date: 1988-11-21
Publication date: 1990-06-04

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係るソレノイドが
適用された電磁弁の概略縦断面図、第２図は第１
図のソレノイド本体の一部を構成するボビンを示
しており、同図ａは縦断面図、同図ｂは同図ａの
ｂ―ｂ線断面図、第３図ａ，ｂは第２図の突起の
各種態様を示す拡大断面図、第４図は本考案と従
来のソレノイドの吸引力特性を比較して示すグラ
フ、第５図は本考案の他の実施例に係る軸受部材
およびセンターポストの縦断面図、第６図は従来
のソレノイドが適用された電磁弁の概略縦断面図
、第７図は第６図のソレノイドのセンターポスト
の磁路断面積を説明するための概略断面図である
。符号の説明、１……ソレノイドバルブ、２……
ソレノイド部、２１……ソレノイド本体、２２…
…プランジヤ、２３……ケーシング、２４……コ
イル、２５……ボビン、２６……センターポスト
、２７……軸受部材、３……バルブ部、４……プ
ランジヤ室、５……弁体、６……スプリング、７
，８……突起。 FIG. 1 is a schematic vertical sectional view of a solenoid valve to which a solenoid according to an embodiment of the present invention is applied, and FIG.
The figure shows a bobbin that constitutes a part of the solenoid body in the figure. Figure a is a longitudinal cross-sectional view, figure b is a cross-sectional view taken along the line b--b of figure a, and figures 3 a and b are the same as in figure 2. FIG. 4 is a graph showing a comparison of the suction force characteristics of the present invention and a conventional solenoid. FIG. 5 is an enlarged cross-sectional view showing various aspects of the protrusion. FIG. 6 is a schematic vertical sectional view of a solenoid valve to which a conventional solenoid is applied, and FIG. 7 is a schematic sectional view for explaining the magnetic path cross-sectional area of the center post of the solenoid in FIG. 6. . Explanation of symbols, 1... Solenoid valve, 2...
Solenoid part, 21... Solenoid body, 22...
... Plunger, 23 ... Casing, 24 ... Coil, 25 ... Bobbin, 26 ... Center post, 27 ... Bearing member, 3 ... Valve section, 4 ... Plunger chamber, 5 ... Valve body, 6 ... ...Spring, 7
, 8... Protrusion.

Claims

[Scope of Claim for Utility Model Registration] (1) A plunger is held on the inner periphery of an internally hollow solenoid body so as to be able to move back and forth in the axial direction, and a center post that electromagnetically attracts the plunger is provided on the inner periphery of one end of the solenoid body. A solenoid that is press-fitted and fixed, characterized in that a protrusion is provided on at least one of the inner periphery of the solenoid body and the outer periphery of the center post so as to surround the center post. (2) The solenoid according to claim 1, wherein the plunger is held on the inner circumference of the solenoid body via a bearing member, and the center post is directly fitted on the inner circumference of the solenoid body.