WO2013172521A1 - Electrovalve - Google Patents

Electrovalve Download PDF

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Publication number
WO2013172521A1
WO2013172521A1 PCT/KR2012/009419 KR2012009419W WO2013172521A1 WO 2013172521 A1 WO2013172521 A1 WO 2013172521A1 KR 2012009419 W KR2012009419 W KR 2012009419W WO 2013172521 A1 WO2013172521 A1 WO 2013172521A1
Authority
WO
WIPO (PCT)
Prior art keywords
holder
control
port
chamber
diameter portion
Prior art date
Application number
PCT/KR2012/009419
Other languages
English (en)
Inventor
Chang Hoon Lee
Eui Dong Roh
Chan Shik Ahn
Original Assignee
Unick Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unick Corporation filed Critical Unick Corporation
Publication of WO2013172521A1 publication Critical patent/WO2013172521A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0603—Multiple-way valves
    • F16K31/061—Sliding valves
    • F16K31/0613—Sliding valves with cylindrical slides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding

Definitions

  • the present invention relates to a solenoid valve; and, more particularly, to a solenoid valve used as one of hydraulic pressure control valve units for controlling a hydraulic pressure to be supplied to an automatic transmission.
  • a vehicle transmission is a device that converts and transmits the rotary speed and power of an engine to be suitable for various driving environments. Such a transmission is classified into a manual transmission through which a gear-shifting process is manually performed by a driver and an automatic transmission through which a gear-shifting process is automatically performed in a certain pattern.
  • the automatic transmission includes a torque converter; an actuator; a planetary gear system; a hydraulic control unit; and an electronic control unit.
  • the hydraulic control unit is provided with a hydraulic pressure control valve unit to control a hydraulic pressure.
  • Korean Patent No. 10-1009266 (2011.01.12) discloses a solenoid valve used as one of hydraulic pressure control valve units.
  • the solenoid valve includes a solenoid which is actuated according to whether a power is switched on or off; a holder coupled to the solenoid; and a spool provided in the holder.
  • a supply chamber, a control chamber, an exhaust chamber and a feedback chamber are formed.
  • Formed on an outer peripheral surface of the holder are a supply port, a control port, an exhaust port and a feedback port connected to the supply chamber, the control chamber, the exhaust chamber and the feedback chamber, respectively.
  • a feedback passage through which the feedback chamber and the control chamber are connected to each other is also formed on the outer peripheral surface of the holder.
  • one end of the aforementioned feedback passage has an open groove-like shape. Accordingly, the feedback passage can function as a complete passage only when the open end of the feedback passage is closed by forming a mounting hole in a valve body of the solenoid valve. Therefore, when a gap is formed between the holder and the mounting hole due to a processing tolerance, an assembly tolerance and/or the like, it is difficult to completely seal spaces between the ports, causing abnormal movement of fluid between the chambers. This makes it difficult to reliably control a hydraulic pressure to be supplied to the automatic transmission.
  • the present invention provides a solenoid valve capable of improving the responsiveness of a valve by reliably controlling a hydraulic pressure to be supplied to the automatic transmission.
  • the present invention also provides a solenoid valve capable of minimizing a hydraulic pressure loss caused by abnormal movement of a fluid by filling a gap between a holder and a mounting hole and completely sealing spaces between ports.
  • a solenoid valve including a valve configured to control a flow of a fluid; and a solenoid configured to operate the valve, wherein the valve includes a pipe-like holder; a supply chamber, a control chamber and an exhaust chamber formed in the holder, the chambers being arranged separately from each other in a longitudinal direction thereof; a supply port, a control port and an exhaust port formed on an outer peripheral surface of the holder, the supply port, the control port and the exhaust port being respectively connected to the supply chamber, and the control chamber and the exhaust chamber; a spool movably provided in the holder; a first and a second large diameter portion respectively formed at opposite ends of the spool, the first and the second large diameter portions having different diameters; and an annular groove formed between the first and the second diameter portion, the annular groove serving to connect the control chamber to the supply chamber or the exhaust chamber when the spool is moved.
  • a diameter of the first large diameter portion may be larger than that of the second large diameter portion, and an inner peripheral surface of the holder may be formed in multiple stages to be adhered to the first and the second large diameter portion.
  • the control port may be formed at a center portion of the holder, and one end and the other end of the inner peripheral surface of the holder may be respectively adhered to the first and the second large diameter portion with respect to the control port.
  • the solenoid valve may further include mounting grooves respectively formed, on the outer peripheral surface of the holder, between the supply port and the control port and between the control port and the exhaust port; and O-rings respectively provided in the mounting grooves to seal gaps between the supply port and the control port and between the control port and the exhaust port.
  • a control pressure is controlled by using a diameter difference between the first and the second large diameter portion, it is possible to minimize a processing tolerance, an assembly tolerance and the like caused by a feedback passage. Accordingly, it is possible to remove a gap between the holder and a mounting hole and to prevent abnormal movement of a fluid by sealing spaces between the ports. Especially, by providing the O-rings on the outer peripheral surface of the holder, it is possible to completely prevent the abnormal movement of the fluid. This makes it possible to a hydraulic pressure loss caused by the feedback passage and to reliably control a hydraulic pressure to be supplied to an automatic transmission, thereby improving the responsiveness of the valve.
  • the first and the second large diameter portion of the spool have different diameters, and thus forces applied thereto by the fluid flowed into the control chamber are different from each other. Accordingly, by adjusting an amount of the fluid flowed into the control chamber, it is possible to prevent rapid variation of the control pressure that is exhausted through the control port. In other words, it is possible to increase or decrease the control pressure at a smooth gradient and it possible to obtain a linearity with regular variation of the control pressure.
  • Fig. 1 is a cross sectional view showing a solenoid valve in accordance with an embodiment of the present invention
  • Fig. 2 is an enlarged view of a valve of the solenoid valve in accordance with the embodiment of the present invention.
  • Figs. 3 to 5 show an operation state of the solenoid valve in accordance with the embodiment of the present invention.
  • a solenoid valve in accordance with an embodiment of the present invention includes a valve 100 for controlling the flow of a fluid; and a solenoid 200 for operating the valve 100.
  • the valve 100 includes a holder 110; a spool 120 movably provided in the holder 110; an elastic member, e.g., a spring, 130 provided above the spool 120; and a pressure-adjusting screw 140.
  • the holder 110 is of a pipe-like shape having a circular cross section in such a way as to move the spool 120 therein.
  • a supply chamber 150, a control chamber 160 and an exhaust chamber 170 are formed separately from each other in a longitudinal direction thereof.
  • Formed on an outer peripheral surface of the holder 110 are a supply port 152, a control port 162 and an exhaust port 172 connected to the supply chamber 150, the control chamber 160 and the exhaust chamber 170, respectively.
  • the chambers 150 to 170 and the ports 152 to 172 are arranged successively vertically from a lower portion of the holder 110 to an upper portion thereof.
  • the supply chamber 150 and the supply port 152 serve to supply a fluid from the outside into the holder 110.
  • the control chamber 160 and the control port 162 serve to control the fluid flowed into the holder 110 to a predetermined pressure and exhausting the fluid to a clutch (not shown) of the automatic transmission.
  • the exhaust chamber 170 and the exhaust port 172 serve to exhaust to the outside the fluid that has been flowed after being exhausted to the clutch of the automatic transmission.
  • the ports 152 to 172 are respectively radially arranged along the circumferences of the chambers 150 to 170, and annular filters 116 are respectively provided at portions on the outer peripheral surface of the holder 110 where the ports 152 and 162 are formed.
  • a first and a second auxiliary chamber 190a and 190b are respectively formed inside an upper and a lower end portion of the holder 110.
  • a first auxiliary port 192a connected to the first auxiliary chamber 190a is formed.
  • a second auxiliary port 192b connected to the second auxiliary chamber 190b is formed.
  • the auxiliary chamber 190a and 190b and the auxiliary ports 192a and 192b respectively serve to ensure the smooth movement of the spool 120 by removing remaining pressures inside the upper and the lower end portion of the holder 110.
  • mounting grooves 112a to 112c are formed on the outer peripheral surface of the holder 110, and O-rings 114a to 114c are respectively provided at the mounting grooves 112a to 112c.
  • a first mounting groove 112a and a first O-ring 114a are provided between the supply port 152 and the second auxiliary port 192b
  • a second mounting groove 112b and the second O-ring 114b are provided between the supply port 152 and the control port 162.
  • a third mounting groove 112c and the third O-ring 114c are provided between the control port 162 and the exhaust port 172.
  • the spool 120 serves as a multi-stage unit including a first large diameter portion 122; a second large diameter portion 124; and an annular groove 126 formed between the first and the second diameter portion 122 and 124.
  • the first and the second diameter portion 122 and 124 are respectively provided at an upper portion and a lower portion of the spool 120 in such a way that a diameter d1 of the first large diameter portion 122 is larger than a diameter d2 of the second large diameter portion 124.
  • an inner peripheral surface of the holder 110 is formed in multiple stages to be adhered to the first and the second large diameter portion 122 and 124. In other words, with regard to the control port 162, an upper end of the inner peripheral surface of the holder 110 is adhered to the first large diameter portion 122, and a lower end of the inner peripheral surface thereof is adhered to the second large diameter portion 124.
  • the difference in a control pressure is generated depending on the areas of hydraulic pressure portions of the control chamber 160. Accordingly, it is possible to obtain a control section and a linearity of the control pressure in accordance with the current applied to the solenoid 200.
  • the pressure-adjusting screw 140 is provided at an upper end portion of the holder 110 to adjust a moving distance of the spool 120 to thereby control the control pressure to be applied to the clutch through the control port 162.
  • the spring 130 is provided between the pressure-adjusting screw 140 and the spool 120 to downwardly elastically support the spool 120 and to absorb the shock generated when the spool 120 is moved.
  • the first large diameter portion 122 formed at the upper end portion of the spool 120 has a different diameter from that of the second large diameter portion 124 formed at the lower end portion thereof. Accordingly, areas of hydraulic pressure portions of the control chamber 160 are different from each other.
  • the diameter d1 of the first large diameter portion 122 is formed to be larger than the diameter d2 of the second large diameter portion 124. Accordingly, when a fluid is flowed into the control chamber 160, a relative large force is applied to the first large diameter portion 122 having the larger hydraulic pressure portion. Therefore, when a power is supplied to the solenoid 200 to start to move the spool 120 upwardly, the force applied to the first large diameter portion 122 is added thereinto, thereby moving the spool 120 upwardly at a certain speed. As a result, it is possible to increase or decrease at a smooth gradient a control pressure of the fluid that is flowed into the control chamber 160 and exhausted through the control port 162. This makes it possible to obtain a linearity with regular variation of the control pressure and to extend a control section of pressure to thereby more accurately control the control pressure.
  • control pressure is controlled by using diameter difference between the first and the second large diameter portion 122 and 124, it is unnecessary to provide a feedback passage. This makes it possible to fundamentally prevent a pressure loss caused by the feedback passage. As a result, it is possible to reliably control the hydraulic pressure and improve the responsiveness.
  • the solenoid 200 serves to move a plunger 250 by generating a magnetic field when a power is applied thereto and to operate the valve 100 through a rod 270 connected to the plunger 250.
  • the solenoid 200 is configured to include a case 210; a bobbin 220 provided in the case 210; a coil 230 wound around an outer peripheral surface of the bobbin 220; a yoke 240 insulted through a lower end of the bobbin 220; the plunger 250 provided in the yoke 240; a core 260 connected to an upper end of the yoke 240; a rod 270 coupled with the core 260 in such a way as to extend through an upper end of the core 260; and a connector 280 coupled with a lower end side of the yoke 240.
  • the solenoid 200 has such a configuration, but is not limited thereto.
  • the solenoid 200 may have any configuration capable of operating the valve 100 depending on whether or not a power is applied thereto.
  • Fig. 3 shows a state of the solenoid valve to which no power is supplied. Specifically, the solenoid valve is in a state where the spool 120, the plunger 150 and the rod 170 are downwardly biased by the action of the spring 130 provided at the upper portion of the holder 110. As a result, the supply chamber 150 and the control chamber 160 are connected to each other, and the control chamber 160 and the exhaust chamber 170 are disconnected from each other. 32.
  • a fluid supplied through the supply port 152 is controlled to a predetermined pressure and then exhausted to the clutch (not shown) of the automatic transmission through the control port 162.
  • a larger pressure of the fluid flowed into the control chamber 160 is applied to the first large diameter portion 124 (See Fig. 4).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention porte sur une électrovalve, qui comprend une valve conçue pour commander un écoulement d'un fluide ; et un solénoïde conçu pour commander la valve. La valve comprend un corps en forme de tube ; une chambre d'arrivée, une chambre de commande et une chambre de sortie formées dans le corps séparément l'une de l'autre, dans leur direction longitudinale ; un orifice d'arrivée, un orifice de commande et un orifice de sortie formés sur une surface périphérique extérieure du corps, qui doivent être respectivement reliés à la chambre d'arrivée et à la chambre de commande et à la chambre de sortie ; un tiroir monté de façon mobile dans le corps ; des première et seconde parties de grand diamètre respectivement formées aux extrémités opposées du tiroir, les première et seconde parties de grand diamètre ayant des diamètres différents ; et une gorge annulaire formée entre les première et seconde parties de diamètre, pour relier la chambre de commande à la chambre d'arrivée ou à la chambre de sortie lorsque le tiroir se déplace.
PCT/KR2012/009419 2012-05-14 2012-11-08 Electrovalve WO2013172521A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120051084A KR101160470B1 (ko) 2012-05-14 2012-05-14 솔레노이드 밸브
KR10-2012-0051084 2012-05-14

Publications (1)

Publication Number Publication Date
WO2013172521A1 true WO2013172521A1 (fr) 2013-11-21

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ID=46689499

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/009419 WO2013172521A1 (fr) 2012-05-14 2012-11-08 Electrovalve

Country Status (2)

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KR (1) KR101160470B1 (fr)
WO (1) WO2013172521A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101575000B1 (ko) 2014-03-03 2015-12-08 주식회사 유니크 솔레노이드 밸브
KR101559423B1 (ko) * 2014-10-08 2015-10-13 주식회사 유니크 오일펌프 컨트롤 밸브
KR101679804B1 (ko) * 2015-07-06 2016-11-28 주식회사 유니크 가변오일펌프 컨트롤 시스템 및 이에 사용되는 가변오일펌프 컨트롤 밸브
KR101786820B1 (ko) 2016-10-10 2017-10-19 주식회사 유니크 오일펌프 컨트롤 밸브
KR101816015B1 (ko) * 2016-10-10 2018-01-09 주식회사 유니크 오일펌프 컨트롤 밸브
WO2018092931A1 (fr) * 2016-11-16 2018-05-24 주식회사 유니크 Système de commande de pompe à huile variable et soupape de commande de pompe à huile variable utilisée à cet effet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001263521A (ja) * 2000-03-17 2001-09-26 Denso Corp 電磁駆動装置およびそれを用いた流体制御弁と電磁駆動装置の製造方法
KR20090126620A (ko) * 2008-06-04 2009-12-09 현대자동차주식회사 자동변속기의 솔레노이드 밸브
KR20100087381A (ko) * 2008-05-29 2010-08-04 아이신에이더블류 가부시키가이샤 전자기 밸브 장치
KR101009266B1 (ko) * 2010-10-26 2011-01-18 주식회사 유니크 솔레노이드 밸브

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001263521A (ja) * 2000-03-17 2001-09-26 Denso Corp 電磁駆動装置およびそれを用いた流体制御弁と電磁駆動装置の製造方法
KR20100087381A (ko) * 2008-05-29 2010-08-04 아이신에이더블류 가부시키가이샤 전자기 밸브 장치
KR20090126620A (ko) * 2008-06-04 2009-12-09 현대자동차주식회사 자동변속기의 솔레노이드 밸브
KR101009266B1 (ko) * 2010-10-26 2011-01-18 주식회사 유니크 솔레노이드 밸브

Also Published As

Publication number Publication date
KR101160470B1 (ko) 2012-06-27

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