JPH0312071U

JPH0312071U -

Info

Publication number: JPH0312071U
Application number: JP6991189U
Authority: JP
Priority date: 1989-06-14
Filing date: 1989-06-14
Publication date: 1991-02-07

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による比例流量制
御バルブにおける流量調整手段を電磁吸引力方向
あるいはその逆方向に付勢するスプリングに使用
される不等ピツチのスプリングの正面図、第２図
は第１図のスプリングのたわみ対荷重特性図、第
３図および第４図はそれぞれこの考案の比例流量
制御バルブにおける流量調整手段を電磁吸引力あ
るいはその逆方向に付勢するスプリングに使用さ
れる円錐コイルスプリングの断面図、第５図はこ
の考案の比例流量制御バルブにおけるプランジヤ
を電磁吸引力方向あるいはその逆方向に付勢する
スプリングに使用されるつづみ形スプリングの断
面図、第６図は第３図ないし第５図のスプリング
のたわみ対荷特性図、第７図は従来の比例流量制
御バルブの全体構成を示す断面図である。１……ソレノイド、２……コア、４……プラン
ジヤ、５，８……スプリング、１１……比例流量
制御バルブ本体、１１ａ……流体導入通路、１１
ｃ……流体導出通路。なお、図中、同一符号は同
一、又は相当部分を示す。 FIG. 1 is a front view of a spring of unequal pitch used in a spring that biases the flow rate adjustment means in the proportional flow control valve in the direction of electromagnetic attractive force or in the opposite direction, according to an embodiment of the invention, and FIG. Figure 1 shows the spring deflection vs. load characteristic diagram, Figures 3 and 4 respectively show a conical shape used in the spring that biases the flow rate adjusting means in the proportional flow control valve of this invention toward electromagnetic attraction force or the opposite direction. 5 is a cross-sectional view of a coil spring, and FIG. 5 is a cross-sectional view of a claw-shaped spring used in the spring that biases the plunger in the direction of electromagnetic attraction force or in the opposite direction of the electromagnetic attraction force in the proportional flow control valve of this invention. 3 to 5 are spring deflection versus load characteristic diagrams, and FIG. 7 is a sectional view showing the overall structure of a conventional proportional flow rate control valve. DESCRIPTION OF SYMBOLS 1... Solenoid, 2... Core, 4... Plunger, 5, 8... Spring, 11... Proportional flow control valve body, 11a... Fluid introduction passage, 11
c...Fluid lead-out passage. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

補正平２．７．１２実用新案登録請求の範囲を次のように補正する
。Amendment 2.7.12 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】コアに巻装された電磁コイルと、この電磁コイ
ルの励磁時に上記コア方向に吸引され比例流量制
御バルブ本体の流体導入通路の開口面積を制御し
て流体の流量を制御する流量調整手段と、この流
量調整手段と上記コアとの間に介在され上記流量
調整手段を吸引方向とは反対方向に付勢する第１
のスプリングと、上記流量調整手段をその吸引方
向に付勢する第２のスプリングとを備えた比例流
量制御バルブにおいて、上記第１および第２のス
プリングのうちの少なくとも一方のストローク対
荷重特性を非線形にして流量制御範囲外でのスプ
リング定数を流量制御範囲内でのそれより大きく
したことを特徴とする比例流量制御バルブ。図面の簡単な説明を次のように補正する。明細書の１２頁１５〜１６行「対荷特性」を「
対荷重特性」と訂正する。[Claim for Utility Model Registration] An electromagnetic coil wound around a core, and when the electromagnetic coil is excited, the electromagnetic coil is attracted toward the core and controls the opening area of the fluid introduction passage of the proportional flow control valve body to control the flow rate of the fluid. a flow rate adjusting means to be controlled; and a first element interposed between the flow rate adjusting means and the core and urging the flow rate adjusting means in a direction opposite to the suction direction.
and a second spring that biases the flow rate adjusting means in its suction direction, wherein the stroke pair of at least one of the first and second springs is
A proportional flow control valve characterized in that the load characteristics are made non-linear so that the spring constant outside the flow control range is larger than that within the flow control range. The brief description of the drawing has been amended as follows. In the specification, page 12, lines 15-16, “Load-bearing characteristics” is changed to “
Corrected to "Load characteristics."

Claims

[Scope of utility model registration request]

an electromagnetic coil wound around the core; a flow rate adjusting means that is attracted toward the core when the electromagnetic coil is energized and controls the opening area of the fluid introduction passage of the proportional flow control valve body to control the flow rate of the fluid; A first interposed between the flow rate adjustment means and the core and urging the flow rate adjustment means in a direction opposite to the suction direction.
and a second spring that biases the flow rate adjustment means in the suction direction thereof, the stroke load characteristic of at least one of the first and second springs is made non-linear. A proportional flow control valve characterized in that a spring constant outside the flow control range is larger than that inside the flow control range.