JP6355617B2 - Control valve for variable displacement compressor - Google Patents

Control valve for variable displacement compressor Download PDF

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Publication number
JP6355617B2
JP6355617B2 JP2015244968A JP2015244968A JP6355617B2 JP 6355617 B2 JP6355617 B2 JP 6355617B2 JP 2015244968 A JP2015244968 A JP 2015244968A JP 2015244968 A JP2015244968 A JP 2015244968A JP 6355617 B2 JP6355617 B2 JP 6355617B2
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valve
valve body
hole
support member
control valve
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JP2017110541A (en
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義之 久米
義之 久米
恒 浅野
恒 浅野
真樹 登丸
真樹 登丸
伊東 雅晴
雅晴 伊東
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Fujikoki Corp
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Fujikoki Corp
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Priority to JP2015244968A priority Critical patent/JP6355617B2/en
Priority to EP16195697.4A priority patent/EP3184817B1/en
Priority to CN201611009717.8A priority patent/CN106884772A/en
Priority to US15/372,922 priority patent/US20170175724A1/en
Priority to KR1020160170235A priority patent/KR20170072149A/en
Publication of JP2017110541A publication Critical patent/JP2017110541A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14Control
    • F04B27/16Control of pumps with stationary cylinders
    • F04B27/18Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804Controlled by crankcase pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14Control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/08Actuation of distribution members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14Control
    • F04B27/16Control of pumps with stationary cylinders
    • F04B27/18Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804Controlled by crankcase pressure
    • F04B2027/1809Controlled pressure
    • F04B2027/1818Suction pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14Control
    • F04B27/16Control of pumps with stationary cylinders
    • F04B27/18Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804Controlled by crankcase pressure
    • F04B2027/1822Valve-controlled fluid connection
    • F04B2027/1827Valve-controlled fluid connection between crankcase and discharge chamber
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14Control
    • F04B27/16Control of pumps with stationary cylinders
    • F04B27/18Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804Controlled by crankcase pressure
    • F04B2027/1822Valve-controlled fluid connection
    • F04B2027/1831Valve-controlled fluid connection between crankcase and suction chamber
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14Control
    • F04B27/16Control of pumps with stationary cylinders
    • F04B27/18Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804Controlled by crankcase pressure
    • F04B2027/184Valve controlling parameter
    • F04B2027/1845Crankcase pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14Control
    • F04B27/16Control of pumps with stationary cylinders
    • F04B27/18Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804Controlled by crankcase pressure
    • F04B2027/184Valve controlling parameter
    • F04B2027/1859Suction pressure

Description

本発明は、カーエアコン等に使用される可変容量型圧縮機用制御弁に関する。   The present invention relates to a control valve for a variable displacement compressor used in a car air conditioner or the like.

従来より、カーエアコン用圧縮機として、図11に簡略図示されている如くの斜板式可変容量型圧縮機が使用されている。この斜板式可変容量型圧縮機100は、車載エンジンに回転駆動される回転軸101、この回転軸101に取り付けられた斜板102、この斜板102が配在されたクランク室104、前記斜板102により往復運動せしめられるピストン105、このピストン105により圧縮された冷媒を吐出するための吐出室106、冷媒を吸入するための吸入室107、クランク室104の圧力Pcを吸入室107へ逃がすための機内逃がし通路(固定オリフィス)108等を有している。   2. Description of the Related Art Conventionally, a swash plate type variable displacement compressor as schematically shown in FIG. 11 has been used as a compressor for a car air conditioner. The swash plate type variable displacement compressor 100 includes a rotary shaft 101 that is driven to rotate by an in-vehicle engine, a swash plate 102 attached to the rotary shaft 101, a crank chamber 104 in which the swash plate 102 is disposed, and the swash plate. The piston 105 reciprocated by the piston 102, the discharge chamber 106 for discharging the refrigerant compressed by the piston 105, the suction chamber 107 for sucking the refrigerant, and the pressure Pc of the crank chamber 104 for releasing the pressure Pc to the suction chamber 107 An in-flight escape passage (fixed orifice) 108 and the like are provided.

一方、上記可変容量型圧縮機に用いられる制御弁1’は、圧縮機100の吐出室106から吐出圧力Pdが導入されるとともに、その吐出圧力Pdを圧縮機100の吸入圧力Psに応じて調圧することによりクランク室104の圧力Pcを制御するようになっており、基本構成として、弁口が設けられた弁室及び圧縮機100の吸入室107に連通するPs導入口を有し、前記弁口より上流側に圧縮機100の吐出室106に連通するPd導入口が設けられるとともに、前記弁口より下流側に前記圧縮機100のクランク室104に連通するPc導出口が設けられた弁本体と、前記弁口を開閉するための弁体(弁棒)と、該弁体を弁口開閉方向(上下方向)に移動させるためのプランジャを有する電磁式アクチュエータと、前記圧縮機100から吸入圧力Psが前記Ps導入口を介して導入される感圧室と、該感圧室の圧力に応じて前記弁体を弁口開閉方向に付勢する感圧応動部材と、を備えており、前記弁体と前記弁口とで図11において符号11’で示される弁部が構成される(例えば下記特許文献1等を参照)。   On the other hand, the control valve 1 ′ used in the variable displacement compressor is supplied with the discharge pressure Pd from the discharge chamber 106 of the compressor 100 and adjusts the discharge pressure Pd according to the suction pressure Ps of the compressor 100. By controlling the pressure, the pressure Pc of the crank chamber 104 is controlled. As a basic configuration, the valve chamber has a valve chamber provided with a valve port and a Ps introduction port communicating with the suction chamber 107 of the compressor 100. A valve main body provided with a Pd introduction port communicating with the discharge chamber 106 of the compressor 100 upstream from the port and with a Pc outlet opening communicating with the crank chamber 104 of the compressor 100 downstream of the valve port. An electromagnetic actuator having a valve body (valve rod) for opening and closing the valve port, a plunger for moving the valve body in the valve port opening / closing direction (vertical direction), and the compressor 100 A pressure sensing chamber into which the suction pressure Ps is introduced through the Ps introduction port, and a pressure sensitive responsive member that urges the valve body in the valve opening / closing direction in accordance with the pressure in the pressure sensing chamber. The valve body and the valve port constitute a valve portion denoted by reference numeral 11 ′ in FIG. 11 (see, for example, Patent Document 1 below).

このような構成の制御弁1’においては、電磁式アクチュエータのコイル、ステータ及び吸引子等からなるソレノイド部が通電されると、吸引子にプランジャが引き寄せられ、これに伴い、弁体が閉弁ばねの付勢力により、プランジャに追従するように閉弁方向に移動せしめられる。一方、圧縮機100からPs導入口を介して導入された吸入圧力Psは、入出室からプランジャとその外周に配在された案内パイプとの間に形成される隙間等を介して感圧室に導入され、感圧応動部材(例えばベローズ装置)は感圧室の圧力(吸入圧力Ps)に応じて伸縮変位(吸入圧力Psが高いと収縮、低いと伸張)し、該変位(付勢力)が弁体に伝達され、それによって、弁口に対して弁体の弁体部が昇降して弁部11’の弁開度が調整される。すなわち、弁開度は、ソレノイド部によるプランジャの吸引力と、感圧応動部材の伸縮変位による付勢力(伸縮力)と、プランジャばね(開弁ばね)及び閉弁ばねによる付勢力とによって決定され、その弁開度に応じて、クランク室104の圧力Pc(以下、クランク室圧力Pcあるいは単に圧力Pcと呼ぶことがある)が制御される。   In the control valve 1 ′ having such a configuration, when the solenoid portion including the coil, the stator, and the attractor of the electromagnetic actuator is energized, the plunger is attracted to the attractor, and the valve body is closed accordingly. The urging force of the spring is moved in the valve closing direction so as to follow the plunger. On the other hand, the suction pressure Ps introduced from the compressor 100 through the Ps introduction port enters the pressure sensitive chamber through a gap formed between the plunger and the guide pipe disposed on the outer periphery thereof. The pressure-responsive member (for example, a bellows device) is expanded and contracted according to the pressure in the pressure-sensitive chamber (suction pressure Ps) (contracts when the suction pressure Ps is high and expands when the pressure is low), and the displacement (biasing force) is This is transmitted to the valve body, whereby the valve body portion of the valve body moves up and down with respect to the valve port, and the valve opening degree of the valve portion 11 ′ is adjusted. That is, the valve opening degree is determined by the attraction force of the plunger by the solenoid part, the urging force (extension / contraction force) due to the expansion / contraction displacement of the pressure-sensitive response member, and the urging force by the plunger spring (valve opening spring) and the valve closing spring. The pressure Pc in the crank chamber 104 (hereinafter sometimes referred to as the crank chamber pressure Pc or simply the pressure Pc) is controlled in accordance with the valve opening.

また、上記可変容量型圧縮機に対し、例えば、圧縮機起動時において吐出容量が大きくなるまでに要する時間を短縮すること、通常制御時において圧縮機の運転効率が低下することを抑制ないし低減すること等を目的とした、図12に簡略図示される如くの改良型の斜板式可変容量型圧縮機も既に提案されている。   Further, for the variable capacity compressor, for example, the time required for the discharge capacity to be increased at the time of starting the compressor is shortened, and the reduction in the operation efficiency of the compressor at the time of normal control is suppressed or reduced. For this purpose, an improved swash plate type variable displacement compressor as shown in FIG. 12 has been proposed.

この改良型の斜板式可変容量型圧縮機200は、それに用いられる制御弁における弁体(弁棒)を主弁体と副弁体とで構成し、その主弁体内に弁内逃がし通路16’を設けたもので、その制御弁2’は、基本的に、弁口が設けられた弁室及び圧縮機200の吸入室107に連通するPs入出口を有し、前記弁口より上流側に圧縮機200の吐出室106に連通するPd導入口が設けられるとともに、前記弁口より下流側に前記圧縮機200のクランク室104に連通するPc入出口が設けられた弁本体と、前記弁口を開閉するための主弁体と、該主弁体を弁口開閉方向に移動させるためのプランジャを有する電磁式アクチュエータと、前記圧縮機200から吸入圧力Psが前記Ps入出口を介して導入される感圧室と、該感圧室の圧力に応じて前記主弁体を弁口開閉方向に付勢する感圧応動部材と、を備え、前記クランク室104の圧力Pcを前記Ps入出口を介して前記圧縮機200の吸入室107に逃がすための弁内逃がし通路16’が前記主弁体内に設けられるとともに、該弁内逃がし通路16’を開閉する副弁体が設けられ、前記電磁式アクチュエータの吸引力により前記プランジャが最下降位置から上方向に連続的に移動せしめられるとき、前記プランジャと一緒に前記副弁体が前記弁内逃がし通路16’を閉じたまま上方向に移動するとともに、該副弁体に追従するように主弁体が上方向に移動せしめられ、前記主弁体により前記弁口が閉じられた後、さらに前記プランジャが上方向に移動せしめられると、前記副弁体が前記弁内逃がし通路16’を開くようにされており、前記主弁体と前記弁口とで図12において符号11’で示される主弁部が構成され、前記副弁体と前記弁内逃がし通路とで符号12’で示される副弁部が構成される(例えば下記特許文献2等を参照)。   In this improved swash plate type variable displacement compressor 200, a valve body (valve rod) in a control valve used therefor is composed of a main valve body and a sub-valve body, and an in-valve escape passage 16 'is formed in the main valve body. The control valve 2 ′ basically has a valve chamber provided with a valve port and a Ps inlet / outlet communicating with the suction chamber 107 of the compressor 200, upstream of the valve port. A valve main body provided with a Pd introduction port communicating with the discharge chamber 106 of the compressor 200 and provided with a Pc inlet / outlet communicating with the crank chamber 104 of the compressor 200 on the downstream side of the valve port; A suction valve Ps is introduced from the compressor 200 through the Ps inlet / outlet. The main valve body for opening and closing the valve, the electromagnetic actuator having a plunger for moving the main valve body in the valve opening / closing direction, and the compressor 200 Depending on the pressure chamber and the pressure in the pressure chamber A pressure sensitive member that biases the main valve body in the valve opening / closing direction, and a valve for releasing the pressure Pc of the crank chamber 104 to the suction chamber 107 of the compressor 200 through the Ps inlet / outlet. An inward release passage 16 ′ is provided in the main valve body, and a sub-valve body for opening and closing the in-valve escape passage 16 ′ is provided, and the plunger is moved upward from the lowest position by the suction force of the electromagnetic actuator. When continuously moved, the sub-valve moves together with the plunger while moving the valve escape passage 16 ′ in the upward direction, and the main valve moves upward so as to follow the sub-valve. When the plunger is further moved upward after the valve port is closed by the main valve body, the sub-valve body opens the in-valve escape passage 16 '. Thus, the main valve body and the valve port constitute a main valve portion denoted by reference numeral 11 'in FIG. 12, and the sub-valve portion denoted by reference numeral 12' is constituted by the sub-valve body and the valve relief passage. (For example, refer to Patent Document 2 below).

かかる構成の制御弁2’においては、通常制御時(Pd→Pc制御時)には、電磁式アクチュエータのコイル、ステータ及び吸引子等からなるソレノイド部が通電されると、吸引子にプランジャが引き寄せられ、これに伴い、プランジャと一体に副弁体が上方向に移動するとともに、この動きに追従して、主弁体が閉弁ばねの付勢力により閉弁方向に移動せしめられる。一方、圧縮機200からPs入出口を介して導入された吸入圧力Psは、入出室からプランジャの横孔等を介して感圧室に導入され、感圧応動部材(例えばベローズ装置)は感圧室の圧力(吸入圧力Ps)に応じて伸縮変位(吸入圧力Psが高いと収縮、低いと伸張)し、該変位(付勢力)が主弁体に伝達され、それによって、弁口に対して主弁体の主弁体部が昇降して主弁部11’の弁開度が調整される。すなわち、弁開度は、ソレノイド部によるプランジャの吸引力と、感圧応動部材の伸縮変位による付勢力(伸縮力)と、プランジャばね(開弁ばね)及び閉弁ばねによる付勢力と、主弁体に作用する開弁方向の力と閉弁方向の力とによって決定され、その弁開度に応じて、クランク室104の圧力Pcが制御される。この場合、主弁体は閉弁ばねの付勢力により常に上向きに付勢されているとともに、副弁体は開弁ばねの付勢力により常に下向きに付勢されているので、副弁部12’が閉弁となり、弁内逃がし通路16’は主弁体内で遮断され、弁内逃がし通路16’を通じてクランク室圧力Pcが吸入室107に逃がされることはない。   In the control valve 2 ′ having such a configuration, during normal control (Pd → Pc control), when a solenoid portion including a coil, a stator, and an attractor of an electromagnetic actuator is energized, the plunger is attracted to the attractor. Accordingly, the sub-valve element moves upward in unison with the plunger, and the main valve element is moved in the valve-closing direction by the urging force of the valve-closing spring following this movement. On the other hand, the suction pressure Ps introduced from the compressor 200 through the Ps inlet / outlet is introduced from the inlet / outlet chamber into the pressure sensitive chamber through the side hole of the plunger, and the pressure sensitive reaction member (for example, the bellows device) is pressure sensitive. Expansion and contraction displacement (contraction when suction pressure Ps is high and expansion when suction pressure Ps is low) according to the pressure in the chamber (suction pressure Ps), and the displacement (biasing force) is transmitted to the main valve body. The main valve body portion of the main valve body is raised and lowered to adjust the valve opening degree of the main valve portion 11 ′. That is, the valve opening includes the plunger suction force by the solenoid part, the biasing force (extension force) due to the expansion / contraction displacement of the pressure sensitive member, the biasing force due to the plunger spring (valve opening spring) and the valve closing spring, and the main valve It is determined by the force in the valve opening direction and the force in the valve closing direction acting on the body, and the pressure Pc in the crank chamber 104 is controlled according to the valve opening degree. In this case, the main valve body is always urged upward by the urging force of the valve closing spring, and the sub valve body is always urged downward by the urging force of the valve opening spring. Is closed, the in-valve escape passage 16 ′ is blocked in the main valve body, and the crank chamber pressure Pc is not released to the suction chamber 107 through the in-valve escape passage 16 ′.

それに対し、圧縮機起動時には、ソレノイド部が通電されて、吸引子にプランジャが引き寄せられ、このプランジャと一緒に副弁体が上方向に移動するとともに、この上方向移動に追従して、主弁体が閉弁ばねの付勢力により閉弁方向に移動せしめられ、主弁体の主弁体部により弁口が閉じられた後、さらにプランジャが上方向に移動せしめられ、これによって副弁体が弁内逃がし通路16’を開くようにされ、クランク室圧力Pcが機内逃がし通路108と弁内逃がし通路16’の二つの通路を通じて吸入室107に逃がされることになる(詳細は、下記特許文献2等を参照されたい)。   On the other hand, when the compressor is started, the solenoid is energized and the plunger is attracted to the suction element. The sub-valve moves together with the plunger, and the main valve follows the upward movement. After the body is moved in the valve closing direction by the urging force of the valve closing spring, and the valve port is closed by the main valve body portion of the main valve body, the plunger is further moved upward, whereby the sub valve body is moved. The in-valve escape passage 16 ′ is opened, and the crank chamber pressure Pc is released to the suction chamber 107 through two passages of the in-flight escape passage 108 and the in-valve escape passage 16 ′ (for details, see Patent Document 2 below). Etc.)

特開2010−185285号公報JP 2010-185285 A 特開2013−130126号公報JP 2013-130126 A

ところで、上記各種の可変容量型圧縮機用制御弁においては、弁口(弁シート部)と弁体が摺動自在に嵌挿される案内孔(摺動部)との軸芯ずれを抑制して耐エロージョン性を確保すべく、一般に、弁本体全体がステンレス等の高硬度材料で作製されている、言い換えれば、弁本体が高硬度材料から作製された一部品で構成されている。そのため、弁本体の加工が難しく、コストアップを招くといった問題があった。   By the way, in the control valves for various variable displacement compressors described above, the axial misalignment between the valve port (valve seat portion) and the guide hole (sliding portion) into which the valve body is slidably inserted is suppressed. In order to ensure erosion resistance, the entire valve body is generally made of a high-hardness material such as stainless steel. In other words, the valve body is composed of a single part made of a high-hardness material. For this reason, there is a problem that the processing of the valve main body is difficult and the cost is increased.

本発明は、上記事情に鑑みてなされたもので、その目的とするところは、軸芯ずれに起因する閉弁性の低下や弁体の摺動性の低下を招くことなく、弁本体の加工が容易で、加工時間や加工コストを削減することのできる可変容量型圧縮機用制御弁を提供することにある。   The present invention has been made in view of the above circumstances, and the object of the present invention is to process the valve main body without incurring a decrease in valve closing property or a decrease in slidability of the valve body due to misalignment of the shaft. It is an object of the present invention to provide a control valve for a variable displacement compressor that is easy to reduce and can reduce processing time and processing cost.

前記の目的を達成すべく、本発明に係る可変容量型圧縮機用制御弁は、基本的に、弁口が設けられた弁室及び圧縮機の吸入室に連通するPs入出口を有し、前記弁口より上流側に圧縮機の吐出室に連通するPd導入口が設けられるとともに、前記弁口より下流側に前記圧縮機のクランク室に連通するPc入出口が設けられた弁本体と、前記弁口を開閉するための弁体と、該弁体を弁口開閉方向に移動させるためのプランジャを有する電磁式アクチュエータと、前記圧縮機から吸入圧力Psが前記Ps入出口を介して導入される感圧室と、該感圧室の圧力に応じて前記弁体を弁口開閉方向に付勢する感圧応動部材と、を備え、前記弁本体は、前記弁体が摺動自在に嵌挿される案内孔及び前記弁口が形成された支持部材と、前記Ps入出口、前記Pd導入口、及び前記Pc入出口が形成された本体部材とを有し、前記本体部材に設けられた凹穴に前記支持部材が内挿固定されて構成されていることを特徴としている。   In order to achieve the above object, a control valve for a variable displacement compressor according to the present invention basically has a valve chamber provided with a valve port and a Ps inlet / outlet communicating with a suction chamber of the compressor, A valve body provided with a Pd introduction port communicating with the discharge chamber of the compressor upstream from the valve port, and provided with a Pc inlet / outlet communicating with the crank chamber of the compressor downstream from the valve port; A valve body for opening and closing the valve opening, an electromagnetic actuator having a plunger for moving the valve body in the valve opening and closing direction, and a suction pressure Ps from the compressor are introduced through the Ps inlet / outlet. And a pressure-sensitive response member that urges the valve body in the valve opening / closing direction according to the pressure in the pressure chamber, and the valve body is slidably fitted to the valve body. A support member in which the guide hole to be inserted and the valve port are formed, the Ps inlet / outlet, d inlet, and has a body member in which the Pc inlet and outlet are formed, the support member in the recess hole provided on the body member is characterized in that it is configured by interpolation fixed.

好ましい態様では、前記凹穴が上側大径穴と下側小径穴とを含んで構成され、前記支持部材のうち前記凹穴に内挿される嵌挿部が上側大径部と下側小径部とを含んで構成され、前記上側大径穴に前記上側大径部が嵌合せしめられた、及び/又は、前記下側小径穴に前記下側小径部が嵌合せしめられた姿勢で、前記凹穴に前記支持部材が内挿固定される。   In a preferred aspect, the concave hole is configured to include an upper large-diameter hole and a lower small-diameter hole, and the fitting insertion portion inserted into the concave hole in the support member includes an upper large-diameter portion and a lower small-diameter portion. In an attitude in which the upper large-diameter portion is fitted into the upper large-diameter hole and / or the lower small-diameter portion is fitted into the lower small-diameter hole. The support member is inserted and fixed in the hole.

更に好ましい態様では、前記上側大径穴に前記上側大径部が嵌合せしめられ、前記下側小径穴の内周と前記下側小径部の外周との間に隙間が設けられた姿勢で、前記凹穴に前記支持部材が内挿固定されており、前記下側小径部の下端が前記弁口とされるとともに、前記下側小径部に、前記隙間を介して前記本体部材の前記Pd導入口に連通する横孔が形成される。   In a more preferred aspect, the upper large diameter portion is fitted into the upper large diameter hole, and a gap is provided between the inner periphery of the lower small diameter hole and the outer periphery of the lower small diameter portion. The support member is inserted and fixed in the recessed hole, the lower end of the lower small diameter portion is used as the valve port, and the Pd introduction of the main body member is introduced into the lower small diameter portion through the gap. A lateral hole communicating with the mouth is formed.

別の好ましい態様では、前記本体部材と前記支持部材との間に、前記本体部材及び/又は前記支持部材の切屑を封止する切屑封止部が設けられる。   In another preferred aspect, a chip sealing portion for sealing chips of the main body member and / or the support member is provided between the main body member and the support member.

前記切屑封止部は、好ましくは、前記凹穴の底面、又は、該底面に対向する前記支持部材の対向面に設けられた環状突起によって画成される。   The chip sealing portion is preferably defined by an annular protrusion provided on the bottom surface of the concave hole or on the facing surface of the support member facing the bottom surface.

前記切屑封止部は、好ましくは、段付きで形成された前記凹穴の上向き段差面、又は、該上向き段差面に対向する前記支持部材の対向面に設けられた環状突起によって画成される。   Preferably, the chip sealing portion is defined by an upward step surface of the concave hole formed with a step or an annular protrusion provided on the opposing surface of the support member facing the upward step surface. .

更に好ましい態様では、前記環状突起の先端が鋭角に形成される。   In a further preferred aspect, the tip of the annular protrusion is formed at an acute angle.

他の好ましい態様では、前記凹穴の内周及び前記支持部材のうち前記凹穴に内挿される嵌挿部の外周が段付きで形成されるとともに、前記切屑封止部は、前記凹穴の上向き段差面の内側角部に当接せしめられるように前記嵌挿部の下向き段差面に設けられた環状傾斜面によって画成される。   In another preferred embodiment, the inner periphery of the recessed hole and the outer periphery of the fitting insertion portion inserted into the recessed hole of the support member are formed in steps, and the chip sealing portion is formed of the recessed hole. It is defined by an annular inclined surface provided on the downward step surface of the fitting insertion portion so as to be brought into contact with the inner corner portion of the upward step surface.

前記支持部材は、好ましくは、前記本体部材より高硬度の材料で構成される。   The support member is preferably made of a material having a hardness higher than that of the main body member.

好ましい態様では、前記支持部材はステンレス材料で構成され、前記本体部材はアルミニウム材料、真鍮材料、又は、樹脂材料で構成される。   In a preferred aspect, the support member is made of a stainless material, and the main body member is made of an aluminum material, a brass material, or a resin material.

本発明に係る可変容量型圧縮機用制御弁によれば、弁本体が、弁体が摺動自在に嵌挿される案内孔及び弁口が形成された支持部材と、Ps入出口、Pd導入口、及びPc入出口が形成された本体部材とを有し、本体部材に設けられた凹穴に支持部材が内挿固定されて構成されている、すなわち、弁本体が支持部材と本体部材との二部品で構成されているので、軸芯ずれに起因する閉弁性の低下や弁体の摺動性の低下を招くことなく、弁本体の加工が容易となり、加工時間や加工コストを効果的に削減することができる。   According to the control valve for a variable displacement compressor according to the present invention, the valve body includes a support member in which a guide hole and a valve port into which the valve body is slidably inserted, a Ps inlet / outlet, and a Pd inlet port. , And a Pc inlet / outlet formed body member, and a support member is inserted and fixed in a recessed hole provided in the body member, that is, the valve body is composed of the support member and the body member. Since it is composed of two parts, the valve body can be easily machined and the machining time and cost can be effectively reduced without degrading the valve closing performance and the sliding performance of the valve body due to misalignment of the shaft. Can be reduced.

この場合、支持部材がステンレス材料等の高硬度の材料で構成され、本体部材がアルミニウム材料、真鍮材料、樹脂材料等の低硬度の材料で構成されていれば、軸芯ずれに起因する閉弁性の低下や弁体の摺動性の低下をより効果的に抑え、弁本体の加工が更に容易となるとともに、弁本体の軽量化を図ることもできる。   In this case, if the support member is made of a high-hardness material such as a stainless steel material, and the main body member is made of a low-hardness material such as an aluminum material, a brass material, or a resin material, the valve is closed due to the misalignment of the shaft. As a result, the valve body can be more easily processed and the weight of the valve body can be reduced.

また、本体部材と支持部材との間に、本体部材及び/又は支持部材の切屑を封止する切屑封止部が設けられているので、例えば本体部材と支持部材とが異なる材料で構成されている(例えば、支持部材がステンレス材料等の高硬度の材料で構成され、本体部材がアルミニウム材料、真鍮材料、樹脂材料等の低硬度の材料で構成されている)場合でも、本体部材に設けられた凹穴に支持部材を内挿する(組み付ける)際に生じ得る切屑(例えば、本体部材の切屑)が当該切屑封止部に封止され、その切屑が弁内部に流動することによる作動不良を確実に抑止することができる。   Moreover, since the chip sealing part which seals the chip | tip of a main body member and / or a support member is provided between the main body member and the support member, for example, a main body member and a support member are comprised with a different material. (For example, the support member is made of a high-hardness material such as a stainless material, and the main body member is made of a low-hardness material such as an aluminum material, a brass material, or a resin material). Chips (for example, chips of the main body member) that may be generated when the support member is inserted (assembled) into the recessed hole are sealed in the chip sealing portion, and malfunction due to the chips flowing into the valve It can be surely deterred.

本発明に係る可変容量型圧縮機用制御弁の第1実施形態の主弁:開、副弁:閉の状態(通常制御時)を示す縦断面図。BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view which shows the state (at the time of normal control) of the main valve of the 1st Embodiment of the control valve for variable displacement compressors which concerns on this invention: Open and subvalve: Closed. 本発明に係る可変容量型圧縮機用制御弁の第1実施形態の主弁:閉、副弁:閉の状態(圧縮機起動移行時)を示す縦断面図。BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view which shows the state (at the time of a compressor starting transition) of the main valve of the 1st Embodiment of the control valve for variable displacement type compressors which concerns on this invention: Closed and a subvalve. 本発明に係る可変容量型圧縮機用制御弁の第1実施形態の主弁:閉、副弁:開の状態(圧縮機起動時)を示す縦断面図。BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view which shows the state (at the time of compressor starting) of the main valve of the 1st Embodiment of the control valve for variable displacement type compressors which concerns on this invention: Closed and a subvalve. 本発明に係る可変容量型圧縮機用制御弁に用いられるプランジャを示す図であり、(A)は正面図、(B)は左側面図、(C)は下面図、(D)は(A)のX−X矢視線に従う断面図、(E)は(B)のY−Y矢視線に従う断面図。It is a figure which shows the plunger used for the control valve for variable displacement compressors which concerns on this invention, (A) is a front view, (B) is a left view, (C) is a bottom view, (D) is (A) ) Is a cross-sectional view taken along the line XX of FIG. 図1に示される切屑封止部の変形例を示す要部拡大断面図。The principal part expanded sectional view which shows the modification of the chip sealing part shown by FIG. 本発明に係る可変容量型圧縮機用制御弁の第2実施形態の主弁:開、副弁:閉の状態(通常制御時)を示す縦断面図。The longitudinal cross-sectional view which shows the state (at the time of normal control) of the main valve of the 2nd Embodiment of the control valve for variable displacement compressors which concerns on this invention: Open and a subvalve. 本発明に係る可変容量型圧縮機用制御弁の第2実施形態の主弁:閉、副弁:閉の状態(圧縮機起動移行時)を示す縦断面図。The longitudinal cross-sectional view which shows the state (at the time of a compressor starting transition) of the main valve of the 2nd Embodiment of the control valve for variable displacement type compressors which concerns on this invention: Closed and a subvalve. 本発明に係る可変容量型圧縮機用制御弁の第2実施形態の主弁:閉、副弁:開の状態(圧縮機起動時)を示す縦断面図。The longitudinal cross-sectional view which shows the main valve of the 2nd Embodiment of the control valve for variable displacement type compressors which concerns on this invention: Closed and a subvalve: An open state (at the time of compressor starting). (A)、(B)は、図5に示される切屑封止部の変形例を示す要部拡大断面図。(A), (B) is a principal part expanded sectional view which shows the modification of the chip sealing part shown by FIG. 本発明に係る可変容量型圧縮機用制御弁の第3実施形態の主弁:開、副弁:閉の状態(通常制御時)を示す縦断面図。The longitudinal cross-sectional view which shows the state (at the time of normal control) of the main valve of the 3rd Embodiment of the control valve for variable displacement compressors which concerns on this invention: Open and subvalve: Closed. 第1の従来例における圧縮機と制御弁との間の冷媒圧力流通状況を示す図。The figure which shows the refrigerant | coolant pressure distribution | circulation condition between the compressor and control valve in a 1st prior art example. 第2の従来例における圧縮機と制御弁との間の冷媒圧力流通状況を示す図であり、(A)は通常運転時、(B)は圧縮機起動時を示す図。It is a figure which shows the refrigerant | coolant pressure distribution | circulation condition between the compressor and control valve in a 2nd prior art example, (A) is a normal operation time, (B) is a figure which shows the time of compressor starting.

以下、本発明の実施形態を図面を参照しながら説明する。   Embodiments of the present invention will be described below with reference to the drawings.

<第1実施形態>
図1〜図3は、それぞれ本発明に係る可変容量型圧縮機用制御弁の第1実施形態を示す縦断面図であり、図1は主弁:開、副弁:閉の状態(通常制御時)、図2は主弁:閉、副弁:閉の状態(圧縮機起動移行時)、図3は主弁:閉、副弁:開の状態(圧縮機起動時)を示している。
<First Embodiment>
1 to 3 are longitudinal sectional views showing a first embodiment of a control valve for a variable displacement compressor according to the present invention, respectively. FIG. 1 shows a state in which a main valve is open and a sub valve is closed (normal control). 2), FIG. 2 shows the main valve: closed, sub valve: closed (when the compressor starts up), and FIG. 3 shows the main valve: closed, sub valve: open (when the compressor is started).

なお、本明細書において、上下、左右、前後等の位置、方向を表わす記述は、説明が煩瑣になるのを避けるために図面に従って便宜上付けたものであり、実際に圧縮機に組み込まれた状態での位置、方向を指すとは限らない。   In the present specification, descriptions representing positions and directions such as up and down, left and right, and front and rear are given for convenience in accordance with the drawings in order to avoid complicated explanation, and are actually incorporated in the compressor. It does not necessarily indicate the position and direction at.

また、各図において、部材間に形成される隙間や部材間の離隔距離等は、発明の理解を容易にするため、また、作図上の便宜を図るため、各構成部材の寸法に比べて大きくあるいは小さく描かれている場合がある。   In each drawing, the gap formed between the members, the separation distance between the members, etc. are larger than the dimensions of each constituent member for easy understanding of the invention and for convenience of drawing. Or it may be drawn small.

図示実施形態の制御弁1は、弁口22が設けられた弁本体20と、弁口22を開閉するための主弁体15を有する弁体10と、該弁体10(主弁体15)を弁口開閉方向(上下方向)に移動させるための電磁式アクチュエータ30と、感圧応動部材としてのベローズ装置40とを備えている。   The control valve 1 of the illustrated embodiment includes a valve body 20 provided with a valve port 22, a valve body 10 having a main valve body 15 for opening and closing the valve port 22, and the valve body 10 (main valve body 15). Is provided with an electromagnetic actuator 30 for moving the valve opening and closing direction (vertical direction) and a bellows device 40 as a pressure-sensitive response member.

電磁式アクチュエータ30は、ボビン38、該ボビン38に外装された通電励磁用のコイル32、取付板39を介してボビン38の上側に取り付けられたコネクタヘッド31、コイル32の内周側に配在されたステータ33及び吸引子34、ステータ33及び吸引子34の下端部外周(段差部)にその上端部が溶接により接合された案内パイプ35、吸引子34の下方で案内パイプ35の内周側に上下方向に摺動自在に配在された断面凹状のプランジャ37、前記コイル32に外挿される円筒状のハウジング60、及び、該ハウジング60の下端部と案内パイプ35との間に配在されてそれらを弁本体20の上部に固定するためのホルダ29を備えている。本例においては、円筒状のステータ33の下部内周に、断面凹字状の吸引子34が一体成形されている。ここでは、電磁式アクチュエータ30のうちの、プランジャ37を除いた、コイル32、ステータ33、及び吸引子34等からなる部分をソレノイド部30Aと称する。   The electromagnetic actuator 30 is disposed on the inner peripheral side of the bobbin 38, a coil 32 for energization excitation encased in the bobbin 38, a connector head 31 mounted on the upper side of the bobbin 38 via a mounting plate 39, and the coil 32. The stator 33 and the suction element 34, the guide pipe 35 whose upper end is joined to the outer periphery (step part) of the lower end of the stator 33 and the suction element 34 by welding, and the inner periphery of the guide pipe 35 below the suction element 34. A plunger 37 having a concave cross section disposed slidably in the vertical direction, a cylindrical housing 60 externally inserted into the coil 32, and a lower end portion of the housing 60 and the guide pipe 35. And a holder 29 for fixing them to the upper part of the valve body 20. In this example, a suction element 34 having a concave cross section is integrally formed on the lower inner periphery of a cylindrical stator 33. Here, the part which consists of the coil 32, the stator 33, the attractor 34, etc. except the plunger 37 among the electromagnetic actuators 30 is called solenoid part 30A.

また、前記ステータ33の上部には、短円柱状の固定子65が圧入等により固着せしめられ、ステータ33の内周側における前記固定子65と吸引子34との間には、圧縮機100の吸入圧力Psが導入される感圧室45が形成され、この感圧室45には感圧応動部材としての、ベローズ41、逆凸字状の上ストッパ42、逆凹字状の下ストッパ43、及び圧縮コイルばね44からなるベローズ装置40が配在されている。さらに、下ストッパ43の凹部内には後述する副弁体17の上部小径部(副弁体部17aとは反対側の端部)17dが嵌挿されて支持されており、下ストッパ43と吸引子34との間には、ベローズ装置40を収縮させる方向に付勢する圧縮コイルばね46が縮装されている。   Further, a short cylindrical stator 65 is fixed to the upper portion of the stator 33 by press fitting or the like, and between the stator 65 and the suction element 34 on the inner peripheral side of the stator 33, the compressor 100. A pressure-sensitive chamber 45 into which the suction pressure Ps is introduced is formed. In the pressure-sensitive chamber 45, a bellows 41, an inverted convex upper stopper 42, an inverted concave lower stopper 43, which serve as pressure sensitive response members, A bellows device 40 including a compression coil spring 44 is disposed. Further, an upper small-diameter portion (end portion on the opposite side of the sub-valve body portion 17a) 17d of the sub-valve body 17 to be described later is fitted and supported in the recess of the lower stopper 43. A compression coil spring 46 that urges the bellows device 40 in a contracting direction is contracted between the child 34.

プランジャ37は、円筒状上半部37Aと円柱状下半部37Bとからなっており、円柱状下半部37Bの中央部には、前記吸引子34を貫通して下方に延びる副弁体17の胴部17b及び主弁体15の上部小径部15f(後で詳述)を挿通する挿通穴37bが形成され、円柱状下半部37Bの上面における前記挿通穴37bの外周部分が、副弁体17の中間大径係止部17cを掛止するための掛止部37aとされている。   The plunger 37 includes a cylindrical upper half portion 37A and a columnar lower half portion 37B. The sub-valve element 17 extends downward through the suction element 34 at the center of the columnar lower half portion 37B. An insertion hole 37b through which the body portion 17b and the upper small-diameter portion 15f (detailed later) of the main valve body 15 are inserted is formed, and the outer peripheral portion of the insertion hole 37b on the upper surface of the cylindrical lower half portion 37B is a sub valve. A latching portion 37a for latching the intermediate large-diameter locking portion 17c of the body 17 is provided.

また、吸引子34と副弁体17の中間大径係止部17c(プランジャ37)との間には、副弁体17及びプランジャ37を下方(開弁方向)に付勢する円筒状の圧縮コイルばねからなるプランジャばね(開弁ばね)47が縮装されており、当該プランジャばね47により副弁体17(の中間大径係止部17c)がプランジャ37に押し付けられて該プランジャ37と一緒に上下動するようになっている。   A cylindrical compression between the suction element 34 and the intermediate large-diameter locking portion 17c (plunger 37) of the sub-valve body 17 biases the sub-valve body 17 and the plunger 37 downward (in the valve opening direction). A plunger spring (valve opening spring) 47 made of a coil spring is mounted in a compressed manner, and the plunger spring 47 presses the sub-valve element 17 (the intermediate large-diameter locking portion 17 c) against the plunger 37 together with the plunger 37. It is designed to move up and down.

さらに、図4を参照すればよく理解されるように、プランジャ37における円柱状下半部37Bの下部(下端部から所定距離だけ上方の部分)には、前記挿通穴37bに重なるように、平面視で略半円形の切込み37tが(横方向に向けて)形成され、その切込み37tの下側(すなわち、切込み37tと円柱状下半部37Bの下端部との間の部分)に、円柱状下半部37Bの下端縁部から前記挿通穴37bまで直線状に延びる、前記挿通穴37bの穴径と略同幅のスリット37sが形成されている。前記切込み37tの(上下方向の)高さは、主弁体15の鍔状係止部15kの高さより若干大きくされており、前記スリット37sの(上下方向の)高さは、主弁体15の上部小径部15fの高さより若干小さくされており、主弁体15は、プランジャ37に対して上下動可能となっている(詳細は後述)。また、前記スリット37sの(横方向の)幅は、組立性等を考慮して、主弁体15の上部小径部15fの外径より若干大きくされるとともに、主弁体15の鍔状係止部15kの外径より小さくされている。   Further, as is well understood with reference to FIG. 4, a flat surface is formed so that the lower part of the cylindrical lower half part 37B of the plunger 37 (the part above the lower end part by a predetermined distance) overlaps the insertion hole 37b. A substantially semicircular cut 37t is formed (in the lateral direction) when viewed, and a cylindrical shape is formed below the cut 37t (that is, a portion between the cut 37t and the lower end of the cylindrical lower half 37B). A slit 37 s is formed that extends linearly from the lower end edge of the lower half portion 37 </ b> B to the insertion hole 37 b and has the same width as the diameter of the insertion hole 37 b. The height (in the vertical direction) of the notch 37t is slightly larger than the height of the hook-shaped locking portion 15k of the main valve body 15, and the height (in the vertical direction) of the slit 37s is the main valve body 15. The main valve body 15 can move up and down with respect to the plunger 37 (details will be described later). Further, the width (in the lateral direction) of the slit 37s is slightly larger than the outer diameter of the upper small diameter portion 15f of the main valve body 15 in consideration of assemblability and the like, and the hook-like engagement of the main valve body 15 is performed. It is made smaller than the outer diameter of the part 15k.

弁体10は、縦方向に並んで(軸線O方向に沿って)配置された主弁体15と副弁体17とからなっている。   The valve body 10 includes a main valve body 15 and a sub-valve body 17 that are arranged in the vertical direction (along the axis O direction).

下側に配置された主弁体15は、下から順に、下部嵌挿部15b、下側小径部15c、主弁体部15a、中間小径部15d、上部嵌挿部15e、上部小径部15f、及び鍔状係止部15kからなっており、その内部中央には縦方向に貫通するように弁内逃がし通路16の一部を構成する段付きの貫通逃がし孔16Aが設けられており、この貫通逃がし孔16Aの上端部が、副弁体17の下端部(副弁体部)17aが離接する副弁シート部23となっている。また、主弁体15の中間小径部15dには、複数個の横孔16sが設けられている。   The main valve body 15 disposed on the lower side includes, in order from the bottom, a lower insertion portion 15b, a lower small diameter portion 15c, a main valve body portion 15a, an intermediate small diameter portion 15d, an upper insertion portion 15e, an upper small diameter portion 15f, And a stepped through hole 16A that constitutes a part of the in-valve escape passage 16 so as to penetrate in the longitudinal direction at the center of the inside. The upper end portion of the relief hole 16 </ b> A serves as a sub valve seat portion 23 to which the lower end portion (sub valve body portion) 17 a of the sub valve body 17 is separated. The intermediate small diameter portion 15d of the main valve body 15 is provided with a plurality of lateral holes 16s.

主弁体15の上部小径部15fは、前記嵌挿穴37b(の切込み37tより下側の部分)に緩く内嵌され、主弁体15の鍔状係止部15kは前記嵌挿穴37bより大径とされており、プランジャ37が主弁体15に対して上方向に移動せしめられるとき、前記嵌挿穴37bの外周部分からなる内鍔状掛止部37kにより鍔状係止部15kが引っ掛けられて抜け止め係止されるようになっている。   The upper small-diameter portion 15f of the main valve body 15 is loosely fitted into the fitting insertion hole 37b (the portion below the notch 37t), and the hook-shaped locking portion 15k of the main valve body 15 is inserted through the fitting insertion hole 37b. When the plunger 37 is moved upward with respect to the main valve body 15, the hook-shaped locking portion 15k is formed by the inner hook-shaped hooking portion 37k formed of the outer peripheral portion of the fitting insertion hole 37b. It is hooked and locked out.

また、前記主弁体15の上側に配置された副弁体17は、下から順に、貫通逃がし孔16Aの上端縁部である副弁シート部23に離接する逆円錐状のテーパ部17a、中間大径係止部17cが形成された胴部17b、円錐台部17e、及び下ストッパ43の凹部内に挿入されて支持される上部小径部17dからなっており、前記テーパ部17aが、弁内逃がし通路16を開閉する副弁体部とされている。ここでは、副弁シート部23と副弁体部17aとで副弁部12が構成される。本例においては、前記胴部17bのうち、中間大径係止部17cより下側の部分がプランジャ37の挿通穴37bに若干の隙間を有して内挿され、中間大径係止部17cより上側かつ吸引子より下側の部分(円筒状上半部37Aの内側に配在される部分)が他の部分より若干拡径されている。   Further, the sub-valve element 17 disposed on the upper side of the main valve element 15 has an inverted conical taper portion 17a that contacts and separates from the sub-valve seat portion 23 that is the upper end edge of the through escape hole 16A in order from the bottom. The body portion 17b is formed with a large-diameter locking portion 17c, a truncated cone portion 17e, and an upper small-diameter portion 17d that is inserted into and supported by the recessed portion of the lower stopper 43. The tapered portion 17a The auxiliary valve body part opens and closes the escape passage 16. Here, the auxiliary valve seat part 23 is comprised by the auxiliary valve seat part 23 and the auxiliary valve body part 17a. In this example, a portion of the body portion 17b below the intermediate large-diameter locking portion 17c is inserted into the insertion hole 37b of the plunger 37 with a slight clearance, and the intermediate large-diameter locking portion 17c. The upper part and the part below the suction element (the part disposed inside the cylindrical upper half part 37A) are slightly enlarged in diameter than the other parts.

副弁体17の周りの各部の寸法形状(例えば、胴部17bと挿通穴37bとの隙間等)は、副弁体17が主弁体15に対して上方向に移動せしめられた位置(すなわち、弁内逃がし通路16が開いた位置)において多少傾いた状態でも、当該副弁体17が主弁体15に近づくに従って(すなわち、副弁体17が弁内逃がし通路16を閉じるときに)、逆円錐状の副弁体部(テーパ部)17aの下端部が貫通逃がし孔16A内に入り込み、その副弁体部17aによって副弁体17が主弁体15に対して調芯されるように、設定されている。より詳細には、副弁体17が主弁体15に対して最上昇位置にあるときに、逆円錐状の副弁体部17aの一部が貫通逃がし孔16A内に位置するように、各部の寸法形状が設定されている(特に、図3参照)。   The dimensional shape of each part around the sub-valve element 17 (for example, the gap between the body part 17b and the insertion hole 37b) is a position where the sub-valve element 17 is moved upward with respect to the main valve element 15 (that is, Even when the sub-valve element 17 approaches the main valve element 15 (ie, when the sub-valve element 17 closes the in-valve escape path 16) even in a state where the sub-valve element 17 is slightly inclined at the position where the in-valve escape passage 16 is opened). The lower end of the inverted conical sub-valve part (tapered part) 17a enters the through escape hole 16A, and the sub-valve part 17a is aligned with the main valve body 15 by the sub-valve part 17a. Is set. More specifically, when the sub-valve element 17 is at the highest position with respect to the main valve element 15, each part is arranged such that a part of the inverted conical sub-valve element portion 17 a is located in the through escape hole 16 </ b> A. Are set (particularly, refer to FIG. 3).

前記弁体10(主弁体15及び副弁体17)とプランジャ37との組み付けに際しては、例えば、予め弁本体20(の案内孔19)に組み付けた主弁体15の鍔状係止部15k及び上部小径部15fがそれぞれプランジャ37の切込み37t及びスリット37sに挿入されるように、当該主弁体15をプランジャ37に対して横移動させ、プランジャ37の中央に設けられた嵌挿穴37bに上部小径部15fを嵌挿した状態とし、その後、副弁体17(の中間大径係止部17cより下側の部分)を嵌挿穴37bに上から挿入すればよい。   When assembling the valve body 10 (the main valve body 15 and the sub-valve body 17) and the plunger 37, for example, the hook-shaped locking portion 15k of the main valve body 15 that is assembled in advance to the valve body 20 (the guide hole 19 thereof). And the main valve body 15 is moved laterally with respect to the plunger 37 so that the upper small diameter portion 15f is inserted into the notch 37t and the slit 37s of the plunger 37, respectively, and is inserted into the fitting insertion hole 37b provided in the center of the plunger 37. The upper small-diameter portion 15f may be inserted and then the sub-valve element 17 (the lower portion of the intermediate large-diameter locking portion 17c) may be inserted into the fitting insertion hole 37b from above.

一方、前記弁本体20は、上部中央に嵌合用の凹穴20Cが設けられた本体部材20Aと、前記凹穴20Cに圧入等により内挿固定される支持部材20Bとの二分割構成とされている。   On the other hand, the valve main body 20 has a two-part configuration of a main body member 20A provided with a concave hole 20C for fitting in the upper center and a support member 20B that is inserted and fixed into the concave hole 20C by press fitting or the like. Yes.

支持部材20Bは、例えばステンレス(SUS)等の比較的硬度の高い材料から作製され、前記凹穴20Cに嵌挿される嵌挿部24の上側に、プランジャ37の最下降位置を規定するための凸状のストッパ部24Aが突設されている。また、支持部材20Bの中央部には、縦方向に貫通するように前記主弁体15の上部嵌挿部15eが摺動自在に嵌挿される案内孔19(上側案内孔19A)が形成され、この上側案内孔19Aの下端部が前記主弁体15の主弁体部15aにより開閉される弁口22(弁シート部)となっている。ここでは、主弁体部15aと弁口22とで主弁部11が構成される。上述のように、支持部材20Bは、ステンレス等の高硬度の材料で作製されているので、その比重も高い。   The support member 20B is made of a relatively hard material such as stainless steel (SUS), for example, and is a convex for defining the lowest position of the plunger 37 on the upper side of the insertion portion 24 to be inserted into the concave hole 20C. 24A-shaped stopper part 24A is protrudingly provided. Further, a guide hole 19 (upper guide hole 19A) into which the upper fitting insertion portion 15e of the main valve body 15 is slidably fitted so as to penetrate in the vertical direction is formed in the central portion of the support member 20B. A lower end portion of the upper guide hole 19A is a valve port 22 (valve seat portion) that is opened and closed by the main valve body portion 15a of the main valve body 15. Here, the main valve part 11 is comprised by the main valve body part 15a and the valve port 22. FIG. As described above, since the support member 20B is made of a high-hardness material such as stainless steel, its specific gravity is also high.

本体部材20Aは、例えばアルミニウムや真鍮、あるいは樹脂等のステンレス等と比べると比較的比重の低い材料(すなわち、比較的硬度の低い材料)から作製され、本体部材20Aの凹穴20Cに支持部材20B(の嵌挿部24)が内挿された状態で、前記ストッパ部24Aの外周には、圧縮機100の吸入圧力Psの入出室28が形成されるとともに、その入出室28の外周側に複数個のPs入出口27が形成されている。このPs入出口27から入出室28に導入された吸入圧力Psは、プランジャ37の底部に形成されたスリット37s及び切込み37t、副弁体17の胴部17bとプランジャ37の挿通穴37bとの間に形成される隙間、プランジャ37の外周と案内パイプ35との間に形成される隙間36等を介して前記感圧室45に導入される。   The main body member 20A is made of a material having a relatively low specific gravity (ie, a material having a relatively low hardness) compared to, for example, aluminum, brass, or stainless steel such as resin, and the support member 20B is inserted into the recessed hole 20C of the main body member 20A. In the state where the (insertion portion 24) is inserted, an inlet / outlet chamber 28 for the suction pressure Ps of the compressor 100 is formed on the outer periphery of the stopper portion 24A, and a plurality of inlet / outlet chambers 28 are provided on the outer peripheral side of the inlet / outlet chamber 28. Ps inlet / outlet 27 is formed. The suction pressure Ps introduced into the inlet / outlet chamber 28 from the Ps inlet / outlet 27 is formed between the slit 37s and the notch 37t formed at the bottom of the plunger 37, and between the body 17b of the sub-valve body 17 and the insertion hole 37b of the plunger 37. Are introduced into the pressure sensitive chamber 45 through a gap 36 formed between the outer periphery of the plunger 37 and the guide pipe 35.

また、本体部材20Aの凹穴20Cの底部中央には、主弁体15の主弁体部15aを収容するための、案内孔19及び前記主弁体部15aより大径かつ凹穴20Cの穴径より小径の収容穴18が連設され、この収容穴18の下部中央には、前記主弁体15の下部嵌挿部15bが摺動自在に嵌挿される案内孔19(下側案内孔19B)が形成されている。収容穴18の底部外周角部と主弁体15の主弁体部15aの下部外周に設けられた段差部(段丘部)15gとの間には、円錐状の圧縮コイルばねからなる閉弁ばね50が縮装されており、この閉弁ばね50の付勢力により主弁体15(の上部嵌挿部15eと上部小径部15fとの段差部)がプランジャ37に押し付けられる。   Further, in the center of the bottom of the recessed hole 20C of the main body member 20A, a hole having a diameter larger than that of the guide hole 19 and the main valve body 15a for accommodating the main valve body 15a of the main valve body 15 and the recessed hole 20C. An accommodation hole 18 having a diameter smaller than the diameter is provided continuously, and a guide hole 19 (lower guide hole 19B) into which a lower fitting insertion portion 15b of the main valve body 15 is slidably fitted is inserted in the lower center of the accommodation hole 18. ) Is formed. A valve closing spring comprising a conical compression coil spring between the bottom outer peripheral corner portion of the receiving hole 18 and a step portion (step portion) 15 g provided on the lower outer periphery of the main valve body portion 15 a of the main valve body 15. The main valve element 15 (the stepped portion between the upper fitting portion 15e and the upper small diameter portion 15f) is pressed against the plunger 37 by the urging force of the valve closing spring 50.

前記収容穴18内(前記支持部材20Bの弁口22より下側部分)が弁室21となっており、この弁室21には、圧縮機100の吐出室106に連通するPd導入口25が複数個開口せしめられている。本体部材20AにおけるPd導入口25の外周には、リング状のフィルタ部材25Aが配在されている。   The inside of the accommodation hole 18 (the lower part from the valve port 22 of the support member 20B) serves as a valve chamber 21, and a Pd introduction port 25 communicating with the discharge chamber 106 of the compressor 100 is provided in the valve chamber 21. A plurality of openings are opened. A ring-shaped filter member 25A is disposed on the outer periphery of the Pd introduction port 25 in the main body member 20A.

また、本体部材20Aの下端部には、フィルタとして機能する蓋状部材48が係合・圧入等により固定されており、この蓋状部材48より上側で主弁体15より下側が、圧縮機100のクランク室104に連通するPc入出室(入出口)26となっている。このPc入出室(入出口)26は、貫通逃がし孔16A→横孔16s→上側案内孔19Aの下部と中間小径部15dとの間の隙間→弁口22と主弁体部15aとの間の隙間→弁室21を介して前記Pd導入口25に連通する。   Further, a lid-like member 48 functioning as a filter is fixed to the lower end portion of the main body member 20A by engagement, press-fitting or the like, and the compressor 100 is located above the lid-like member 48 and below the main valve body 15. The Pc entrance / exit chamber (entrance / exit) 26 communicates with the crank chamber 104. This Pc entrance / exit chamber (entrance / exit) 26 is formed between the through relief hole 16A → the lateral hole 16s → the gap between the lower portion of the upper guide hole 19A and the intermediate small diameter portion 15d → the valve port 22 and the main valve body portion 15a. The clearance is communicated with the Pd inlet 25 through the valve chamber 21.

また、本実施形態では、図1に拡大図示されているように、弁本体20を構成する本体部材20Aと支持部材20Bとの間に、本体部材20Aと支持部材20Bを組み付ける際に発生し得る切屑(特に、相対的に硬度の低い本体部材20Aの削り屑)を封止する切屑封止部(ポケット部)20Pが設けられている。   Further, in the present embodiment, as shown in an enlarged view in FIG. 1, it may occur when the main body member 20A and the support member 20B are assembled between the main body member 20A constituting the valve main body 20 and the support member 20B. A chip sealing part (pocket part) 20P for sealing chips (particularly shavings of the main body member 20A having relatively low hardness) is provided.

詳細には、前記凹穴20Cの底面に対向する支持部材20B(の嵌挿部24)の底面(対向面)に、先端が鋭角に形成された環状突起24Bが突設されており、前記凹穴20Cに前記嵌挿部24を内挿すると、前記環状突起24Bが凹穴20Cの底面に当接せしめられる(この場合、環状突起24Bが凹穴20Cの底面より硬いので、環状突起24Bの一部が凹穴20Cの底面に食い込む)ので、組付時に凹穴20C(の内壁面)と嵌挿部24(の外周面)とが摺動して発生した切屑(特に、相対的に硬度の低い本体部材20Aの削り屑)は、前記環状突起24Bと凹穴20Cの底部外周角部とによって画成される切屑封止部20Pに収容されて封止される。   More specifically, an annular protrusion 24B having a sharp tip is provided on the bottom surface (opposing surface) of the support member 20B (the fitting insertion portion 24) facing the bottom surface of the recessed hole 20C. When the insertion portion 24 is inserted into the hole 20C, the annular protrusion 24B is brought into contact with the bottom surface of the recessed hole 20C (in this case, the annular protrusion 24B is harder than the bottom surface of the recessed hole 20C, so Since the portion bites into the bottom surface of the recessed hole 20C), chips (particularly with relatively high hardness) generated by sliding the recessed hole 20C (the inner wall surface) and the fitting insertion portion 24 (the outer peripheral surface thereof) during assembly. The lower main body member 20A shavings) is housed and sealed in a chip sealing portion 20P defined by the annular protrusion 24B and the outer peripheral corner of the bottom of the concave hole 20C.

なお、図1に示す例では、支持部材20Bの嵌挿部24に切屑封止部20Pを画成する環状突起24Bを形成したが、例えば、図5に示すように、本体部材20Aの凹穴20Cの底面(図示例では、その底面の内端)に切屑封止部20Pを画成する環状突起20Dを形成してもよい。この場合、環状突起20Dは嵌挿部24の底面より柔らかいので、環状突起20Dの一部(先端部)が撓んだ状態で嵌挿部24の底面に当接せしめられ、その環状突起20Dと凹穴20Cの底部外周角部とによって切屑封止部20Pが画成される。   In the example illustrated in FIG. 1, the annular protrusion 24 </ b> B that defines the chip sealing portion 20 </ b> P is formed in the fitting insertion portion 24 of the support member 20 </ b> B. For example, as illustrated in FIG. 5, An annular protrusion 20D that defines the chip sealing portion 20P may be formed on the bottom surface of 20C (in the illustrated example, the inner end of the bottom surface). In this case, since the annular protrusion 20D is softer than the bottom surface of the insertion portion 24, the annular protrusion 20D is brought into contact with the bottom surface of the insertion portion 24 in a state where a part (tip portion) of the annular protrusion 20D is bent. The chip sealing portion 20P is defined by the bottom outer peripheral corner portion of the recessed hole 20C.

また、本実施形態では、主弁体15に形成された貫通逃がし孔16A、プランジャ37内に設けられた切込み37t及びスリット37s、入出室28などで、クランク室104の圧力PcをPs入出口27を介して圧縮機100の吸入室107に逃がすための弁内逃がし通路16が構成され、主弁体15の貫通逃がし孔16Aの上端縁部である副弁シート部23に副弁体17の副弁体部17aが離接することにより、前記弁内逃がし通路16が開閉されるようになっている。   Further, in this embodiment, the pressure Pc of the crank chamber 104 is changed to the Ps inlet / outlet 27 by the through relief hole 16A formed in the main valve body 15, the notch 37t and the slit 37s provided in the plunger 37, the inlet / outlet chamber 28, and the like. An in-valve escape passage 16 is formed to escape to the suction chamber 107 of the compressor 100 through the auxiliary valve seat 17, which is the upper edge of the through-hole 16 </ b> A of the main valve body 15. When the valve body portion 17a is separated from and connected to the valve body, the in-valve escape passage 16 is opened and closed.

ここで、本実施形態の制御弁1では、図1に示される如くに、プランジャ37、主弁体15、及び副弁体17が最下降位置にある状態(プランジャ37の最下端面がストッパ部24Aに当接、主弁部11は全開、副弁部12は全閉)において、主弁体15の主弁体部15aと弁口22(弁シート部)との間の上下方向の離隔距離が第1リフト量Lvとされ、プランジャ37の内鍔状掛止部37kと主弁体15の鍔状係止部15kとの離隔距離は所定量Laとされ、前記プランジャ37の最大リフト量(第2リフト量)Lp(プランジャ37の最下降位置から最上昇位置までのリフト量)は、第1リフト量Lv+所定量Laとなっている。   Here, in the control valve 1 of the present embodiment, as shown in FIG. 1, the plunger 37, the main valve body 15, and the sub-valve body 17 are in the lowest lowered position (the lowermost end surface of the plunger 37 is the stopper portion. 24A, the main valve part 11 is fully open, and the sub-valve part 12 is fully closed). The vertical separation distance between the main valve body 15a of the main valve body 15 and the valve port 22 (valve seat part). Is the first lift amount Lv, the separation distance between the inner hook-shaped latching portion 37k of the plunger 37 and the hook-shaped locking portion 15k of the main valve body 15 is a predetermined amount La, and the maximum lift amount of the plunger 37 ( The second lift amount Lp (the lift amount from the lowest position of the plunger 37 to the highest position) is the first lift amount Lv + the predetermined amount La.

次に、上記構成とされた制御弁1の動作を概説する。   Next, the operation of the control valve 1 configured as described above will be outlined.

通常制御時(Pd→Pc制御時)には、プランジャ37のリフト量は、最大でも前記第1リフト量Lv強とされ、圧縮機起動時(Pc→Ps制御時)には、プランジャ37のリフト量は、前記第2リフト量Lpとされる。   During normal control (Pd → Pc control), the lift amount of the plunger 37 is set to be slightly greater than the first lift amount Lv, and when the compressor is activated (Pc → Ps control), the lift amount of the plunger 37 is increased. The amount is the second lift amount Lp.

すなわち、通常制御時(Pd→Pc制御時)には、コイル32、ステータ33及び吸引子34等からなるソレノイド部30Aが通電励磁されると、吸引子34にプランジャ37が引き寄せられ、これに伴い、プランジャ37の掛止部37aに副弁体17の中間大径係止部17cが係止されるので、プランジャ37と一体に副弁体17が上方向に移動するとともに、この動きに追従して、閉弁ばね50の付勢力により主弁体15が上方(閉弁方向)に移動せしめられる。一方、圧縮機100からPs入出口27に導入された吸入圧力Psは、入出室28からプランジャ37のスリット37s及び切込み37t等を介して感圧室45に導入され、ベローズ装置40(内部は真空圧)は感圧室45の圧力(吸入圧力Ps)に応じて伸縮変位(吸入圧力Psが高いと収縮、低いと伸張)し、該変位がプランジャ37や副弁体17を介して主弁体15に伝達され、それによって、弁開度(弁口22と主弁体部15aとの離隔距離)が調整され、その弁開度に応じて、クランク室104の圧力Pcが調整される。これに伴い、圧縮機100の斜板102の傾斜角度及びピストン105のストロークが調整されて、吐出容量が増減される。   That is, during normal control (Pd → Pc control), when the solenoid portion 30A including the coil 32, the stator 33, and the attractor 34 is energized, the plunger 37 is attracted to the attractor 34. Since the intermediate large-diameter locking portion 17c of the sub-valve body 17 is locked to the latching portion 37a of the plunger 37, the sub-valve body 17 moves upward together with the plunger 37 and follows this movement. Thus, the main valve body 15 is moved upward (in the valve closing direction) by the urging force of the valve closing spring 50. On the other hand, the suction pressure Ps introduced from the compressor 100 to the Ps inlet / outlet 27 is introduced from the inlet / outlet chamber 28 into the pressure sensing chamber 45 through the slit 37s and the notch 37t of the plunger 37, and the bellows device 40 (the inside is vacuum). (Pressure) expands and contracts according to the pressure in the pressure sensing chamber 45 (suction pressure Ps) (shrinks when the suction pressure Ps is high, expands when the pressure is low), and the displacement is via the plunger 37 and the sub-valve body 17. 15, thereby adjusting the valve opening (separation distance between the valve port 22 and the main valve body 15 a), and adjusting the pressure Pc of the crank chamber 104 according to the valve opening. Accordingly, the inclination angle of the swash plate 102 of the compressor 100 and the stroke of the piston 105 are adjusted, and the discharge capacity is increased or decreased.

この場合、主弁体15は閉弁ばね50の付勢力により常に上向きに付勢されているとともに、副弁体17は開弁ばね47の付勢力により常に下向きに付勢されているので、副弁体部17aは副弁シート部23に押し付けられた状態(副弁部12が閉弁)となり、弁内逃がし通路16は主弁体15内で遮断されている。そのため、弁内逃がし通路16を通じてクランク室圧力Pcが吸入室107に逃がされることはない。   In this case, the main valve body 15 is always urged upward by the urging force of the valve closing spring 50, and the sub valve body 17 is always urged downward by the urging force of the valve opening spring 47. The valve body portion 17 a is pressed against the sub valve seat portion 23 (the sub valve portion 12 is closed), and the valve relief passage 16 is blocked in the main valve body 15. Therefore, the crank chamber pressure Pc is not released to the suction chamber 107 through the in-valve escape passage 16.

それに対し、圧縮機起動時には、ソレノイド部30Aが通電励磁されて、吸引子34にプランジャ37が引き寄せられ、このプランジャ37と一緒に副弁体17が上方向に移動し、この上方向移動に追従して主弁体15が上方向に移動せしめられ、主弁体15の主弁体部15aにより弁口22が閉じられた後、さらにプランジャ37が上方向に移動せしめられ、これによって副弁体17が弁内逃がし通路16を開くようにされ、クランク室104の圧力Pcが機内逃がし通路108と弁内逃がし通路16の二つの通路を通じて吸入室107に逃がされる。   On the other hand, at the time of starting the compressor, the solenoid portion 30A is energized and energized, and the plunger 37 is attracted to the attractor 34. The sub-valve body 17 moves upward together with the plunger 37 and follows this upward movement. After the main valve body 15 is moved upward and the valve port 22 is closed by the main valve body portion 15a of the main valve body 15, the plunger 37 is further moved upward, whereby the sub-valve body is moved. 17 opens the in-valve escape passage 16, and the pressure Pc in the crank chamber 104 is released to the suction chamber 107 through two passages of the in-flight escape passage 108 and the in-valve escape passage 16.

詳細には、プランジャ37の上方向移動量が第1リフト量Lvに達するまでは、主弁体15が閉弁ばね50の付勢力によりプランジャ37及び副弁体17の上方向移動に追従するように閉弁方向に移動し、前記上方向移動量が前記第1リフト量Lvに達すると、主弁体15の主弁体部15aにより弁口20が閉じられ(図2に示す状態)、この主弁部11の閉弁状態からさらにプランジャ37が前記所定量La分上方向に移動せしめられる(図3に示す状態)。言い換えれば、プランジャ37の上方向移動量が前記第1リフト量Lvに達した後、プランジャ37の内鍔状掛止部37kが主弁体15の鍔状係止部15kに係止されるまでの所定量La分だけ副弁体17が引き上げられる(第1リフト量Lv+所定量La=第2リフト量Lp)。この場合、主弁体15は閉弁状態のまま不動であるので、副弁体17の副弁体部17aは、副弁シート部23から所定量La分リフトせしめられ、これによって弁内逃がし通路16が開かれる。プランジャ37の内鍔状掛止部37kが主弁体15の鍔状係止部15kに係止されると、ソレノイド部30Aが吸引力を発生しても、プランジャ37及び副弁体17はそれ以上引き上げられない。   Specifically, until the upward movement amount of the plunger 37 reaches the first lift amount Lv, the main valve body 15 follows the upward movement of the plunger 37 and the sub-valve body 17 by the biasing force of the valve closing spring 50. When the upward movement amount reaches the first lift amount Lv, the valve port 20 is closed by the main valve body portion 15a of the main valve body 15 (the state shown in FIG. 2). The plunger 37 is further moved upward by the predetermined amount La from the closed state of the main valve portion 11 (state shown in FIG. 3). In other words, after the upward movement amount of the plunger 37 reaches the first lift amount Lv, the inner hook-shaped latching portion 37k of the plunger 37 is locked to the hook-shaped locking portion 15k of the main valve body 15. The sub-valve body 17 is lifted by the predetermined amount La (first lift amount Lv + predetermined amount La = second lift amount Lp). In this case, since the main valve body 15 remains stationary while being closed, the sub-valve body portion 17a of the sub-valve body 17 is lifted by a predetermined amount La from the sub-valve seat portion 23, and thereby the in-valve escape passage. 16 is opened. When the inner hook-shaped latching portion 37k of the plunger 37 is locked to the hook-shaped locking portion 15k of the main valve body 15, even if the solenoid portion 30A generates a suction force, the plunger 37 and the sub-valve body 17 It cannot be raised any more.

このように、本実施形態の制御弁1においては、弁本体20が、弁体10が摺動自在に嵌挿される案内孔29及び弁口22が形成された支持部材20Bと、Ps入出口27、Pd導入口25、及びPc入出口26が形成された本体部材20Aとを有し、本体部材20Aに設けられた凹穴20Cに支持部材20Bが内挿固定されて構成されている、すなわち、弁本体20が支持部材20Bと本体部材20Aとの二部品で構成されているので、軸芯ずれに起因する閉弁性の低下や弁体10の摺動性の低下を招くことなく、弁本体20の加工が容易となり、加工時間や加工コストを効果的に削減することができる。   Thus, in the control valve 1 of the present embodiment, the valve main body 20 includes the support member 20B in which the guide hole 29 and the valve port 22 into which the valve body 10 is slidably inserted, and the Ps inlet / outlet 27. The Pd inlet 25 and the main body member 20A formed with the Pc inlet / outlet 26, and the support member 20B is inserted and fixed in the recessed hole 20C provided in the main body member 20A. Since the valve main body 20 is composed of two parts of the support member 20B and the main body member 20A, the valve main body does not cause a decrease in valve closing performance or a sliding performance of the valve body 10 due to the misalignment of the axis. Therefore, the processing time and processing cost can be effectively reduced.

また、支持部材20Bがステンレス材料等の高硬度の材料で構成され、本体部材20Aがアルミニウム材料、真鍮材料、樹脂材料等の低硬度の材料で構成されているので、軸芯ずれに起因する閉弁性の低下や弁体10の摺動性の低下をより効果的に抑え、弁本体20の加工が更に容易となるとともに、弁本体20の軽量化を図ることもできる。   Further, since the support member 20B is made of a high-hardness material such as a stainless steel material, and the main body member 20A is made of a low-hardness material such as an aluminum material, a brass material, or a resin material, the support member 20B is closed due to an axial misalignment. It is possible to more effectively suppress a decrease in valve performance and a decrease in slidability of the valve body 10, further facilitate the processing of the valve body 20, and reduce the weight of the valve body 20.

また、本体部材20Aと支持部材20Bとの間に、本体部材20A及び/又は支持部材20Bの切屑を封止する切屑封止部20Pが設けられているので、例えば、支持部材20Bがステンレス材料等の高硬度の材料で構成され、本体部材20Aがアルミニウム材料、真鍮材料、樹脂材料等の低硬度の材料で構成されている場合でも、本体部材20Aに設けられた凹穴20Cに支持部材20Bを内挿する(組み付ける)際に生じ得る切屑(例えば、本体部材20Aの切屑)が当該切屑封止部20Pに封止され、その切屑が弁内部に流動することによる作動不良を確実に抑止することができる。   Moreover, since the chip sealing part 20P which seals the chips of the main body member 20A and / or the support member 20B is provided between the main body member 20A and the support member 20B, for example, the support member 20B is made of a stainless material or the like. Even when the main body member 20A is made of a low-hardness material such as an aluminum material, a brass material, or a resin material, the support member 20B is inserted into the recessed hole 20C provided in the main body member 20A. Chips (for example, chips of the main body member 20A) that may be generated during insertion (assembly) are sealed by the chip sealing portion 20P, and malfunctions due to the chips flowing into the valve are reliably suppressed. Can do.

<第2実施形態>
図6〜図8は、それぞれ本発明に係る可変容量型圧縮機用制御弁の第2実施形態を示す縦断面図であり、図6は主弁:開、副弁:閉の状態(通常制御時)、図7は主弁:閉、副弁:閉の状態(圧縮機起動移行時)、図8は主弁:閉、副弁:開の状態(圧縮機起動時)を示している。
Second Embodiment
FIGS. 6 to 8 are longitudinal sectional views showing a second embodiment of the control valve for a variable displacement compressor according to the present invention. FIG. 6 shows a state where the main valve is open and the sub valve is closed (normal control). 7), FIG. 7 shows the main valve: closed, the subvalve: closed (when the compressor starts up), and FIG. 8 shows the main valve: closed, the subvalve: open (when the compressor is started).

本第2実施形態の制御弁2は、上記第1実施形態における制御弁1に対し、基本的に、弁本体及び弁体における主弁体の構成のみが相違している。したがって、第1実施形態と同様の機能を有する構成については同様の符号を付してその詳細な説明は省略し、以下では、前記した相違点のみについて詳細に説明する。   The control valve 2 of the second embodiment is basically different from the control valve 1 of the first embodiment only in the configuration of the main valve body in the valve body and the valve body. Therefore, components having the same functions as those in the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted, and only the differences described above will be described in detail below.

本実施形態の制御弁2では、上記第1実施形態の制御弁1に対し、主弁体15における上部嵌挿部15e及び中間小径部15dが長く形成され、主弁体部15aの下側の下側小径部15c及び下部嵌挿部15bが省略されている。   In the control valve 2 of the present embodiment, the upper fitting portion 15e and the intermediate small diameter portion 15d of the main valve body 15 are formed longer than the control valve 1 of the first embodiment, and the lower side of the main valve body portion 15a. The lower small diameter portion 15c and the lower fitting insertion portion 15b are omitted.

また、弁本体20の支持部材20Bにおける嵌挿部24は段付きで形成され、上側大径部24a(第1実施形態の嵌挿部24に相当する外形)の下側に、該上側大径部24aより上下方向長さが長い下側小径部24bが設けられ、その下側小径部24bの下端に、本体部材20Aの凹穴20Cと収容穴18との間の段差部(段丘部)に当接せしめられる鍔状当接部24cが外側に向けて張り出すように設けられている。   Moreover, the fitting insertion part 24 in the support member 20B of the valve body 20 is formed with a step, and the upper large diameter is provided below the upper large diameter part 24a (the outer shape corresponding to the fitting insertion part 24 of the first embodiment). A lower small-diameter portion 24b whose length in the vertical direction is longer than that of the portion 24a is provided at a lower end of the lower small-diameter portion 24b at a step portion (step terrace portion) between the recessed hole 20C and the accommodation hole 18 of the main body member 20A. A hook-shaped contact portion 24c to be contacted is provided so as to project outward.

一方、弁本体20の本体部材20Aにおける凹穴20Cも段付きで形成され、前記上側大径部24aが嵌挿される上側大径穴20Ca(第1実施形態の凹穴20Cに相当する外形)と前記下側小径部24bが嵌挿される下側小径穴20Cbとで構成され、下側小径穴20Cbの底部中央に、主弁体15の主弁体部15aを収容する段付きの収容穴18が連設されている。収容穴18の内周に設けられた段差部と主弁体15の主弁体部15aの下部外周に設けられた段差部(段丘部)15gとの間には、円錐状の圧縮コイルばねからなる閉弁ばね50が縮装されている。   On the other hand, the concave hole 20C in the main body member 20A of the valve main body 20 is also formed with a step, and an upper large-diameter hole 20Ca into which the upper large-diameter portion 24a is inserted (an outer shape corresponding to the concave hole 20C in the first embodiment). The lower small-diameter hole 20Cb into which the lower small-diameter portion 24b is inserted is provided, and a stepped accommodation hole 18 for accommodating the main valve body portion 15a of the main valve body 15 is provided at the bottom center of the lower small-diameter hole 20Cb. It is connected continuously. Between the stepped portion provided on the inner periphery of the receiving hole 18 and the stepped portion (stepped portion) 15g provided on the lower outer periphery of the main valve body portion 15a of the main valve body 15, a conical compression coil spring is used. The valve closing spring 50 is contracted.

また、収容穴18内(前記支持部材20Bの弁口22より下側部分)が弁室21となっているが、ここでは、前記凹穴20Cにおける下側小径穴20Cbに、圧縮機100の吐出室106に連通するPd導入口25が複数個開口せしめられ、そのPd導入口25の外周にリング状のフィルタ部材25Aが外装され、(主弁体15の中間小径部15dに代えて)前記嵌挿部24における下側小径部24bに、前記Pd導入口25に連通する複数個の横孔25sが設けられており、圧縮機100のクランク室104に連通するPc入出室(入出口)26は、弁室21→弁口22と主弁体部15aとの間の隙間→案内孔19(上側案内孔19A)の下部と中間小径部15dとの間の隙間→下側小径部24bの横孔25s→下側小径部24bと下側小径穴20Cbとの間の隙間(詳細は後述)を介して前記Pd導入口25に連通する。   Further, the inside of the accommodation hole 18 (the lower part from the valve port 22 of the support member 20B) is the valve chamber 21, but here, the discharge of the compressor 100 is discharged into the lower small-diameter hole 20Cb in the concave hole 20C. A plurality of Pd inlets 25 communicating with the chamber 106 are opened, and a ring-shaped filter member 25A is externally provided on the outer periphery of the Pd inlet 25 (instead of the intermediate small diameter portion 15d of the main valve body 15). A plurality of lateral holes 25 s communicating with the Pd introduction port 25 are provided in the lower small diameter portion 24 b of the insertion portion 24, and a Pc inlet / outlet chamber (entrance / exit) 26 communicating with the crank chamber 104 of the compressor 100 is The clearance between the valve chamber 21 → the valve port 22 and the main valve body 15a → the clearance between the lower portion of the guide hole 19 (upper guide hole 19A) and the intermediate small diameter portion 15d → the horizontal hole of the lower small diameter portion 24b 25s → lower small diameter part 24b and lower small (Details will be described later) gap between the hole 20Cb communicating with said Pd inlet 25 through.

また、本実施形態では、上側大径部24aの外周と上側大径穴20Caの内周とが当接し(言い換えれば、上側大径穴20Caに上側大径部24aが嵌合(内接)せしめられ)、下側小径部24bの外周と下側小径穴20Cbの内周との間に若干の隙間を有する姿勢で、本体部材20Aの凹穴20Cに支持部材20Bが内挿固定されており、図6に拡大図示されているように、上側大径穴20Caと下側小径穴20Cbとの段差部(上向きの段差面)に対向する上側大径部24aの底面(対向面)に、先端が鋭角に形成された環状突起24Bが突設されている。組付時に凹穴20C(の上側大径穴20Caの内壁面)と嵌挿部24(の上側大径部24aの外周面)とが摺動して発生した切屑(特に、相対的に硬度の低い本体部材20Aの削り屑)は、前記環状突起24Bと上側大径穴20Caの底部外周角部とによって画成される切屑封止部20Pに収容されて封止される。   In the present embodiment, the outer periphery of the upper large-diameter portion 24a and the inner periphery of the upper large-diameter hole 20Ca are in contact (in other words, the upper large-diameter portion 24a is fitted (inscribed) into the upper large-diameter hole 20Ca. The support member 20B is inserted and fixed in the recessed hole 20C of the main body member 20A in a posture having a slight gap between the outer periphery of the lower small diameter portion 24b and the inner periphery of the lower small diameter hole 20Cb. As shown in an enlarged view in FIG. 6, the tip is on the bottom surface (opposing surface) of the upper large-diameter portion 24a facing the step portion (upward step surface) between the upper large-diameter hole 20Ca and the lower small-diameter hole 20Cb. An annular protrusion 24B formed at an acute angle protrudes. Chips (particularly relatively hard) generated by sliding between the recessed hole 20C (the inner wall surface of the upper large-diameter hole 20Ca) and the fitting insertion portion 24 (the outer peripheral surface of the upper large-diameter portion 24a) during assembly. The lower main body member 20A shavings) are housed and sealed in a chip sealing portion 20P defined by the annular protrusion 24B and the bottom outer peripheral corner of the upper large-diameter hole 20Ca.

なお、図6に示す例では、支持部材20Bの嵌挿部24の上側大径部24aに切屑封止部20Pを画成する環状突起24Bを形成したが、例えば、図9(A)に示すように、本体部材20Aの凹穴20Cの上向きの段差面(図示例では、その段差面の内端)に切屑封止部20Pを画成する環状突起20Dを形成してもよい。また、例えば、図9(B)に示すように、段付きで形成された嵌挿部24の(上側大径部24aと下側小径部24bとの)段差部(下向きの段差面)の内端に環状傾斜面24Cを形成し、その環状傾斜面24Cを凹穴20Cの段差部(上向きの段差面)の内側角部に当接せしめることで、当該環状傾斜面24Cと凹穴20Cの上側大径穴20Caの底部外周角部とによって切屑封止部20Pを画成してもよい。   In the example shown in FIG. 6, the annular protrusion 24 </ b> B that defines the chip sealing portion 20 </ b> P is formed on the upper large-diameter portion 24 a of the fitting insertion portion 24 of the support member 20 </ b> B. As described above, the annular protrusion 20D that defines the chip sealing portion 20P may be formed on the upward step surface (in the illustrated example, the inner end of the step surface) of the recessed hole 20C of the main body member 20A. Further, for example, as shown in FIG. 9B, within the stepped portion (downward stepped surface) of the fitting insertion portion 24 (the upper large diameter portion 24a and the lower small diameter portion 24b) formed with a step. An annular inclined surface 24C is formed at the end, and the annular inclined surface 24C is brought into contact with an inner corner of the stepped portion (upward stepped surface) of the recessed hole 20C. The chip sealing portion 20P may be defined by the bottom outer peripheral corner of the large diameter hole 20Ca.

また、図示は省略するが、例えば、嵌挿部24の下側小径部24aの外周(図示例においては、鍔状当接部24cの外周)と凹穴20Cの下側小径穴20Cbの内周とが当接し(言い換えれば、下側小径穴20Cbに下側小径部24bが嵌合(内接)せしめられ)ている場合には、凹穴20C(の下側小径穴20Cb)の底面、あるいは、その底面に対向する支持部材20Bの下側小径部24aの底面(対向面)に、切屑封止部20Pを画成する環状突起を形成してもよいことは勿論である。   Moreover, although illustration is abbreviate | omitted, for example, the outer periphery of the lower side small diameter part 24a of the insertion part 24 (in the example of illustration, the outer periphery of the bowl-shaped contact part 24c) and the inner circumference of the lower side small diameter hole 20Cb of the recessed hole 20C Are in contact with each other (in other words, the lower small diameter portion 24b is fitted (inscribed) into the lower small diameter hole 20Cb), or the bottom surface of the concave hole 20C (lower small diameter hole 20Cb), or Of course, an annular protrusion defining the chip sealing portion 20P may be formed on the bottom surface (opposing surface) of the lower small diameter portion 24a of the support member 20B facing the bottom surface.

かかる構成の第2実施形態の制御弁2においても、上記第1実施形態の制御弁1と同様の作用効果が得られることは言うまでも無い。   Needless to say, the control valve 2 according to the second embodiment having the above-described configuration can obtain the same effects as the control valve 1 according to the first embodiment.

<第3実施形態>
図10は、本発明に係る可変容量型圧縮機用制御弁の第3実施形態の主弁:開、副弁:閉の状態(通常制御時)を示す縦断面図である。
<Third Embodiment>
FIG. 10 is a longitudinal sectional view showing a main valve: open and sub valve: closed state (during normal control) of a third embodiment of the control valve for a variable displacement compressor according to the present invention.

本第3実施形態の制御弁3は、上記第2実施形態における制御弁2に対し、基本的に、弁体の構成が相違している。なお、本第3実施形態の制御弁3では、その他の構成(例えば、電磁式アクチュエータ等の構成)も上記第2実施形態の制御弁2とは多少異なるが、説明が煩雑になるのを回避するために、ここでは、第2実施形態と同様の機能を有する構成については同様の符号を付してその詳細な説明は省略し(詳細構造については、例えば特許文献1等も参照されたい)、以下では、前記した相違点のみについて詳細に説明する。   The control valve 3 of the third embodiment is basically different from the control valve 2 of the second embodiment in the configuration of the valve body. In the control valve 3 of the third embodiment, the other configuration (for example, the configuration of an electromagnetic actuator or the like) is slightly different from the control valve 2 of the second embodiment, but avoids complicated explanation. Therefore, here, components having the same functions as those in the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted (see, for example, Patent Document 1 for a detailed structure). Hereinafter, only the above-described differences will be described in detail.

本第3実施形態の制御弁3では、前記弁体10の主弁体15と副弁体17とが一体に成形され、主弁体15における貫通逃がし孔(及び、それに伴う弁内逃がし通路)が省略され、当該弁体10がプランジャ37に上下動不能に係合されている。電磁式アクチュエータ30のソレノイド部30Aへの通電励磁によりプランジャが上方向(閉弁方向)に移動せしめられるとき、プランジャ37の底部に設けられた内鍔状掛止部37kがその上側に設けられた弁体10の鍔状係止部15kに係合して、当該弁体10がプランジャ37と一緒に移動せしめられる。なお、当該制御弁3の動作・作用については、例えば特許文献1等も参照されたい。   In the control valve 3 according to the third embodiment, the main valve body 15 and the sub-valve body 17 of the valve body 10 are integrally formed, and a through-relief hole (and an associated in-valve escape passage) in the main valve body 15 is formed. Is omitted, and the valve body 10 is engaged with the plunger 37 so as not to move up and down. When the plunger is moved upward (valve closing direction) by energizing and exciting the solenoid portion 30A of the electromagnetic actuator 30, an inner hook-shaped latching portion 37k provided on the bottom of the plunger 37 is provided on the upper side. The valve body 10 is moved together with the plunger 37 by engaging with the hook-shaped locking portion 15 k of the valve body 10. For the operation and action of the control valve 3, see, for example, Patent Document 1 and the like.

かかる構成の第3実施形態の制御弁3においては、弁内逃がし通路の機能による作用効果は得られないものの、それ以外の上記第1、2実施形態の制御弁1、2と同様の作用効果が得られることは当然である。   In the control valve 3 of the third embodiment having such a configuration, the function and effect of the function of the escape passage in the valve cannot be obtained, but the same function and effect as those of the control valves 1 and 2 of the first and second embodiments other than the above are obtained. It is natural that is obtained.

1 可変容量型圧縮機用制御弁(第1実施形態)
2 可変容量型圧縮機用制御弁(第2実施形態)
3 可変容量型圧縮機用制御弁(第3実施形態)
10 弁体
11 主弁部
12 副弁部
15 主弁体
15a 主弁体部
15k 鍔状係止部
16 弁内逃がし通路
17 副弁体
17a 副弁体部(テーパ部)
19 案内孔
19A 上側案内孔
19B 下側案内孔
20 弁本体
20A 本体部材
20B 支持部材
20C 凹穴
20P 切屑封止部
21 弁室
22 弁口
23 副弁シート部
25 Pd導入口
26 Pc入出口
27 Ps入出口
30 電磁式アクチュエータ
30A ソレノイド部
37 プランジャ
37k 内鍔状掛止部
37s スリット
37t 切込み
40 ベローズ装置(感圧応動部材)
45 感圧室
50 閉弁ばね
Lv 第1リフト量
La 所定量
Lp 第2リフト量
1 Control valve for variable displacement compressor (first embodiment)
2 Control valve for variable displacement compressor (second embodiment)
3. Control valve for variable displacement compressor (third embodiment)
DESCRIPTION OF SYMBOLS 10 Valve body 11 Main valve part 12 Sub valve part 15 Main valve body 15a Main valve body part 15k Saddle-shaped latching | locking part 16 Valve escape passage 17 Sub valve body 17a Sub valve body part (taper part)
19 guide hole 19A upper guide hole 19B lower guide hole 20 valve main body 20A main body member 20B support member 20C recessed hole 20P chip sealing part 21 valve chamber 22 valve port 23 sub valve seat part 25 Pd inlet 26 Pc inlet / outlet 27 Ps Entry / exit 30 Electromagnetic actuator 30A Solenoid part 37 Plunger 37k Inner collar-shaped latching part 37s Slit 37t Cut 40 Bellows device (pressure-sensitive response member)
45 Pressure sensing chamber 50 Valve closing spring Lv First lift amount La Predetermined amount Lp Second lift amount

Claims (10)

弁口が設けられた弁室及び圧縮機の吸入室に連通するPs入出口を有し、前記弁口より上流側に圧縮機の吐出室に連通するPd導入口が設けられるとともに、前記弁口より下流側に前記圧縮機のクランク室に連通するPc入出口が設けられた弁本体と、前記弁口を開閉するための弁体と、該弁体を弁口開閉方向に移動させるためのプランジャを有する電磁式アクチュエータと、前記圧縮機から吸入圧力Psが前記Ps入出口を介して導入される感圧室と、該感圧室の圧力に応じて前記弁体を弁口開閉方向に付勢する感圧応動部材と、を備え、
前記弁本体は、前記弁体が摺動自在に嵌挿される案内孔及び前記弁口が形成された支持部材と、前記Ps入出口、前記Pd導入口、及び前記Pc入出口が形成された本体部材とを有し、前記本体部材に設けられた凹穴に前記支持部材が内挿固定されて構成されていることを特徴とする可変容量型圧縮機用制御弁。
A valve chamber provided with a valve port and a Ps inlet / outlet communicating with a suction chamber of the compressor, a Pd introduction port communicating with a discharge chamber of the compressor upstream from the valve port, and the valve port A valve body provided with a Pc inlet / outlet communicating with the crank chamber of the compressor further downstream, a valve body for opening / closing the valve port, and a plunger for moving the valve body in the valve port opening / closing direction An electromagnetic actuator, a pressure sensing chamber into which suction pressure Ps is introduced from the compressor through the Ps inlet / outlet, and the valve body is biased in the valve opening / closing direction according to the pressure in the pressure sensing chamber A pressure-sensitive response member,
The valve body includes a guide member into which the valve body is slidably inserted and a support member in which the valve port is formed, and a body in which the Ps inlet / outlet, the Pd inlet / outlet, and the Pc inlet / outlet are formed. A control valve for a variable displacement compressor, wherein the support member is inserted and fixed in a recessed hole provided in the main body member.
前記凹穴が上側大径穴と下側小径穴とを含んで構成され、前記支持部材のうち前記凹穴に内挿される嵌挿部が上側大径部と下側小径部とを含んで構成され、
前記上側大径穴に前記上側大径部が嵌合せしめられた、及び/又は、前記下側小径穴に前記下側小径部が嵌合せしめられた姿勢で、前記凹穴に前記支持部材が内挿固定されていることを特徴とする請求項1に記載の可変容量型圧縮機用制御弁。
The concave hole is configured to include an upper large-diameter hole and a lower small-diameter hole, and the fitting insertion portion inserted into the concave hole in the support member includes an upper large-diameter portion and a lower small-diameter portion. And
In the posture in which the upper large diameter portion is fitted in the upper large diameter hole and / or the lower small diameter portion is fitted in the lower small diameter hole, the support member is placed in the concave hole. 2. The control valve for a variable displacement compressor according to claim 1, wherein the control valve is inserted and fixed.
前記上側大径穴に前記上側大径部が嵌合せしめられ、前記下側小径穴の内周と前記下側小径部の外周との間に隙間が設けられた姿勢で、前記凹穴に前記支持部材が内挿固定されており、
前記下側小径部の下端が前記弁口とされるとともに、前記下側小径部に、前記隙間を介して前記本体部材の前記Pd導入口に連通する横孔が形成されていることを特徴とする請求項2に記載の可変容量型圧縮機用制御弁。
The upper large-diameter portion is fitted into the upper large-diameter hole, and a gap is provided between the inner periphery of the lower small-diameter hole and the outer periphery of the lower small-diameter portion. The support member is fixed by insertion,
The lower end of the lower small diameter portion is the valve port, and the lower small diameter portion is formed with a lateral hole communicating with the Pd introduction port of the main body member through the gap. The control valve for a variable displacement compressor according to claim 2.
前記本体部材と前記支持部材との間に、前記本体部材及び/又は前記支持部材の切屑を封止する切屑封止部が設けられていることを特徴とする請求項1に記載の可変容量型圧縮機用制御弁。   The variable capacity type according to claim 1, wherein a chip sealing portion for sealing chips of the main body member and / or the support member is provided between the main body member and the support member. Control valve for compressor. 前記切屑封止部は、前記凹穴の底面、又は、該底面に対向する前記支持部材の対向面に設けられた環状突起によって画成されていることを特徴とする請求項4に記載の可変容量型圧縮機用制御弁。   5. The variable according to claim 4, wherein the chip sealing portion is defined by an annular protrusion provided on a bottom surface of the concave hole or on an opposing surface of the support member facing the bottom surface. Control valve for capacity compressor. 前記切屑封止部は、段付きで形成された前記凹穴の上向き段差面、又は、該上向き段差面に対向する前記支持部材の対向面に設けられた環状突起によって画成されていることを特徴とする請求項4に記載の可変容量型圧縮機用制御弁。   The chip sealing portion is defined by an upward protrusion surface of the concave hole formed with a step or an annular protrusion provided on an opposing surface of the support member facing the upward step surface. The control valve for a variable displacement compressor according to claim 4, wherein the control valve is a variable displacement compressor. 前記環状突起の先端が鋭角に形成されていることを特徴とする請求項5又は6に記載の可変容量型圧縮機用制御弁。   The control valve for a variable displacement compressor according to claim 5 or 6, wherein a tip of the annular protrusion is formed at an acute angle. 前記凹穴の内周及び前記支持部材のうち前記凹穴に内挿される嵌挿部の外周が段付きで形成されるとともに、
前記切屑封止部は、前記凹穴の上向き段差面の内側角部に当接せしめられるように前記嵌挿部の下向き段差面に設けられた環状傾斜面によって画成されていることを特徴とする請求項4に記載の可変容量型圧縮機用制御弁。
While the inner periphery of the concave hole and the outer periphery of the fitting insertion portion inserted into the concave hole among the support members are formed with steps,
The chip sealing portion is defined by an annular inclined surface provided on a downward step surface of the fitting insertion portion so as to be brought into contact with an inner corner portion of an upward step surface of the concave hole. The control valve for a variable displacement compressor according to claim 4.
前記支持部材は、前記本体部材より高硬度の材料で構成されていることを特徴とする請求項1から8のいずれか一項に記載の可変容量型圧縮機用制御弁。   The control valve for a variable displacement compressor according to any one of claims 1 to 8, wherein the support member is made of a material having a hardness higher than that of the main body member. 前記支持部材はステンレス材料で構成され、前記本体部材はアルミニウム材料、真鍮材料、又は、樹脂材料で構成されていることを特徴とする請求項9に記載の可変容量型圧縮機用制御弁。   The control valve for a variable displacement compressor according to claim 9, wherein the support member is made of a stainless material, and the main body member is made of an aluminum material, a brass material, or a resin material.
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