CN102301167B - Solenoid valve for transmission - Google Patents

Solenoid valve for transmission Download PDF

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Publication number
CN102301167B
CN102301167B CN201080005947.1A CN201080005947A CN102301167B CN 102301167 B CN102301167 B CN 102301167B CN 201080005947 A CN201080005947 A CN 201080005947A CN 102301167 B CN102301167 B CN 102301167B
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China
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mentioned
solenoid valve
width
transmission
core portion
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CN102301167A (en
Inventor
李昌勋
鲁义东
金永根
金兑炫
严商敦
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Excellent Nick Ltd
Unick Corp
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Excellent Nick Ltd
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    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
    • F16H61/0276—Elements specially adapted for hydraulic control units, e.g. valves
    • 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
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
    • F16H2061/0253—Details of electro hydraulic valves, e.g. lands, ports, spools or springs
    • 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
    • H01F7/081—Magnetic constructions
    • H01F2007/085—Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material

Abstract

A solenoid valve for a transmission is provided which can directly control a clutch of an automatic transmission. That is, it is possible to provide a solenoid valve for a transmission which includes a plunger, a core, and a yoke separated from the core by 1.5 mm to 2.5 mm and having three widths and which can guarantee a magnetic force sufficient to control a high pressure and a high flow rate. It is also possible to provide a solenoid valve for a transmission in which a feedback flow channel has a diameter of 0.5 mm to 1.5 mm and a thickness of 1.5 mm to 2.5 mm to enhance an overlap. It is possible to provide a solenoid valve for a transmission which can prevent the deformation of the solenoid valve to improve the durability even with an application of an external force by including a guide allowing the core and the yoke to form a body. It is also possible to provide a solenoid valve for a transmission which is resistant to foreign particles by mounting the filter on at least one of the supply port and the control port of the holder.

Description

Solenoid valve for transmission
Technical field
The present invention relates to a kind of solenoid valve for transmission, relate in particular to a kind of solenoid valve for transmission that can directly control the clutch of automatic transmission.
Background technique
Conventionally automobile engine closes, and needs stronger torque and low rotational speed when starting to exercise, and in order to accelerate its travelling speed, specific torque more needs high rotational speed.Therefore, speed changer is brought into play following function, for making engine revolution maintain certain level, when using selector to set out, increases torque, and in order to accelerate travelling speed, improve rotational speed when reducing rotational speed.This speed changer has the manual transmission of user's manually-operable clutch and utilizes oil-pressure direct to tap into the automatic transmission that row meets the speed change of speed.
On the other hand, former automatic transmission has mainly been used, and utilizes compared with the pilot pressure of low decompression and the solenoid valve of the indirect control mode of solenoidoperated cluthes indirectly.The solenoid valve of this indirect control mode, in order to control for controlling the higher clutch pressure of high flow capacity and clutch, and needs complicated oil hydraulic circuit.Yet the solenoid valve of the indirect control mode before adopting exists following shortcoming, along with the increase of the speed change lever of speed changer, this oil hydraulic circuit becomes increasingly complex, and the size of whole device increases and improved this fabricating cost accordingly.Therefore, simplifying oil hydraulic circuit recently and dwindling the research and development that whole device reduces the solenoid valve of this fabricating cost big or small time.
Summary of the invention
The object of the present invention is to provide a kind of can acquisition for controlling the solenoid valve for transmission of the enough magnetic force of high pressure and high flow capacity.
And another object of the present invention is to provide a kind of can increase overlapping solenoid valve for transmission.
For achieving the above object, the invention provides a kind of solenoid valve for transmission, it comprises the valve portion that electromagnetism portion turns round with action along with above-mentioned electromagnetism portion, it is characterized in that, above-mentioned electromagnetism portion comprises: a core portion; One yoke portion, separated by a certain interval with above-mentioned core portion, and towards the direction that approaches above-mentioned core portion, be provided with successively mutually different the first width and the second width and the 3rd width on the face parallel with length direction; One plunger, carries out back and forth movement by above-mentioned core portion and yoke portion, and the above-mentioned valve portion of turning round.
Above-mentioned the first width is larger than above-mentioned the second width, and above-mentioned the second width is larger than above-mentioned the 3rd width.
Above-mentioned yoke portion is as the criterion and comprises with length direction end face: form the first surface of above-mentioned the first width and the 9th; Form the fourth face of above-mentioned the second width and the 9th; Form the 6th and the 9th of above-mentioned the 3rd width, and between above-mentioned first surface and above-mentioned fourth face, be provided with second of inclination with vertical the 3rd, between above-mentioned fourth face and above-mentioned the 6th, be provided with the 5th of inclination, at the most end of above-mentioned the 6th, the 7th that is provided with inclination is connected and vertical octahedral with the most end with above-mentioned the 9th.
Certain intervals between above-mentioned yoke portion and above-mentioned coil is preferably 1.5 to 2.5mm.
Above-mentioned valve portion comprises: be provided with an above cell with mouthful hollow stent; Be provided with above-mentioned more than one circular groove, and the spool moving up and down in above-mentioned support by above-mentioned electromagnetism portion.
Above-mentioned support is provided with discharge chamber, control room, supply room and refluxing chamber 112 successively towards above-mentioned valve portion direction, and above-mentioned spool is provided with the first circular groove and second circular groove narrower than the width of above-mentioned the first circular groove successively towards above-mentioned valve portion direction.
Yet, the present invention is not limited to this, above-mentioned support is provided with refluxing chamber 112, supply room, control room and discharge chamber successively towards above-mentioned valve portion direction, and above-mentioned spool is provided with the first circular groove and second circular groove wider than the width of above-mentioned the first circular groove successively towards above-mentioned valve portion direction.
And, the present invention includes: be located at the backflow stream on the refluxing chamber 112 of above-mentioned support; Be located at the supply port of supply room one end of above-mentioned support; Be located at the control stream on the control room of above-mentioned support; Be located at the control mouth of one end, control room of above-mentioned support; Be located at the exhaust port of discharge chamber one end of above-mentioned support.
Now, above-mentioned backflow stream is connected with above-mentioned control stream, and the diameter of above-mentioned backflow stream is 0.5 to 1.5mm, and thickness is 1.5 to 2.5mm, very effective.
And the present invention also comprises the filter being arranged in above-mentioned supply port and above-mentioned control mouth at least one.
Now, in above-mentioned supply port and above-mentioned control mouth, at least one, be provided with filter mounting groove, and it is protruding at the most end of above-mentioned filter, to be respectively equipped with the installation of installing in above-mentioned filter mounting groove.
And the present invention also comprises and being designed to around the periphery of above-mentioned core portion and above-mentioned yoke portion so that above-mentioned core portion and above-mentioned yoke portion shape all-in-one-piece guide portion.
Now, in the periphery of above-mentioned core portion and above-mentioned yoke portion, be respectively equipped with step, and above-mentioned guide portion is located on above-mentioned step.
The invention provides a kind of solenoid valve for transmission, it has plunger and core portion and possesses the yoke portion of three width of 1.5 to 2.5mm of being separated by with core portion, thereby can obtain for controlling the enough magnetic force of high pressure and high flow capacity.
And, the invention provides a kind of solenoid valve for transmission, its backflow stream is designed to have 0.5 to 1.5mm diameter and 1.5 to 2.5mm thickness, thereby increases overlapping.
And, the invention provides a kind of solenoid valve for transmission, it has the guide portion that is integrally formed core portion and yoke portion, thereby even if the external force of applying also can prevent the distortion of solenoid valve for transmission, thereby improve durability.
And, the invention provides a kind of solenoid valve for transmission, in its supply port at support and control mouth, on any one, filter is installed, thereby can be filtered foreign matter.
Accompanying drawing explanation
Fig. 1 is according to the sectional view of the solenoid valve for transmission of the first embodiment of the present invention.
Fig. 2 is the sectional view of the A part of expanded view diagram 1.
Fig. 3 is according to the sectional view of the solenoid valve for transmission of the variation of first embodiment of the invention.
Fig. 4 is according to the side view of the solenoid valve for transmission support of the variation of first embodiment of the invention.
Fig. 5 is according to the sectional view of the yoke portion of the solenoid valve for transmission of first embodiment of the invention.
Fig. 6 is according to the sectional view of the core portion of the solenoid valve for transmission of the variation of first embodiment of the invention and yoke portion.
The sectional view of the flow direction of pressure when Fig. 7 turns round according to the solenoid valve for transmission of first embodiment of the invention for diagram.
Fig. 8 is according to the sectional view of the solenoid valve for transmission of second embodiment of the invention.
Fig. 9 is the sectional view of the B part of expanded view diagram 8.
Figure 10 be according to the solenoid valve for transmission of second embodiment of the invention with according to before solenoid valve for transmission when running of technology the output waveform figure measured.
Reference character
Figure BPA00001408386900041
Figure BPA00001408386900051
Embodiment
Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Yet the embodiment that the present invention is not limited in this announcement, can implement by mutually different diversified form, but the present embodiment can make announcement of the present invention more complete, so that have the category that the people of common knowledge understands invention completely.In accompanying drawing, same reference numerals refers to identical structural element.
Fig. 1 is according to the sectional view of the solenoid valve for transmission of the first embodiment of the present invention, Fig. 2 is the sectional view of the A part of expanded view diagram 1, Fig. 3 is according to the sectional view of the solenoid valve for transmission of the variation of first embodiment of the invention, Fig. 4 is according to the side view of the solenoid valve for transmission support of the variation of first embodiment of the invention, Fig. 5 is according to the sectional view of the yoke portion of the solenoid valve for transmission of first embodiment of the invention, Fig. 6 is according to the sectional view of the core portion of the solenoid valve for transmission of the variation of first embodiment of the invention and yoke portion, the sectional view of the flow direction of pressure when Fig. 7 turns round according to the solenoid valve for transmission of first embodiment of the invention for diagram.
According to the solenoid valve for transmission of first embodiment of the invention as shown in Figure 1, comprise valve portion 100, for the electromagnetism portion 200 of actuating valve portion 100.
Valve portion 100 is arranged on valve body (not shown) side with plural stream, thereby the fluid by the supply of outside oil pressure supply source is applied to certain pilot pressure, and being fed to clutch (not shown) side, it comprises the support 110 of hollow, the spool 120 arranging movably in support 110 inside, the spring 130 arranging respectively on spool 120 tops and pressure regulating screw 140.
Support 110 has the shape of the hollow of the movement of portion's guide spool 120 within it, in spool 120 inside, is provided with successively discharge chamber 117a, control room 113a, supply room 115a, refluxing chamber 112.At this, in discharge chamber 117a one end, be provided with exhaust port 117b, by exhaust port 117b, partly discharge residual voltage.In 113a one end, control room, be provided with contact and in transmission clutch (not shown) side, regulate the control mouth 113b of clutch pressure.And, in supply room 115a one end, be provided with the supply port 115b contacting with outside oil pressure supply source, in refluxing chamber 112 one end, be provided with when be arranged on valve body (the left side dotted line part of Fig. 4) when upper due to the attachment face of valve body pent opening 118.And, at the topmost part of support 110, be provided with i.e. the first auxiliary discharge chamber 117a in the temporary transient space stopping of oil that is attached to spool 120 peripheries, and in first auxiliary discharge chamber 117a one end, be provided with for discharge remain in the first auxiliary discharge chamber 111a oil so that the first auxiliary exhaust port 114a of spool 120 freedoms of movement.And, in the lower end of support 110, be provided with the second auxiliary discharge chamber 111b, and in its one end, be provided with and towards outside, discharge the second auxiliary exhaust port 114b that is attached to oil or other various foreign matters of spool 120 peripheries and removes residual voltage.On the other hand, as shown in Figure 4, on support 110 1 side outer circumferential faces, be provided with for dredging the stream of refluxing chamber 112 and control room 113a.This stream comprises the backflow stream 119 and the control stream 116 that is located at control room 113a that is located at refluxing chamber 112, if while being arranged on valve body (the right side dotted line part of Fig. 4) side according to the solenoid valve of first embodiment of the invention, because the attachment face of valve body is closed.
On the other hand, the present invention as shown in Figure 3, also can arrange filter 150 at the control mouth 113b of support 110 and any place in supply port 115b.
Filter 150 flows to for filtering the foreign matter that support 110 is controlled mouthful 113b and supply port 115b, has endless belt shape and is provided with a plurality of holes.The present embodiment has been given an example and be provided with the first filter 150a on control mouthful 113b, and on supply port 115b, is provided with the second filter 150b's.And, as shown in Figure 4, in order to install, fix the first and second filter 150a, 150b, on control mouthful 113b and supply port 115b, be respectively equipped with filter mounting groove R1, R2.The installation of pressing several angle bending in the most end setting of the first filter 150a and the second filter 150b is protruding, and installation is protruding on filter mounting groove R1, R2, thereby so that the first and second filter 150a, 150b are arranged on control mouthful 113b and supply port 115b is fixed.
At support 110 open part topmost, be provided with by controlling mouthful 113b and regulate and be applied to the pilot pressure of clutch side and pressure regulating screw 140 that can up-down adjustment.And, between pressure regulating screw 140 and spool 120, be provided with the spring 130 that cushions spool 120 when the bottom direction of spool 120 provides elastic force when spool 120 moves up and down.
Spool 120 is located at support 110 inside of hollow movably, and on its outer circumferential face, is provided with more than one circular groove.As this circular groove, given an example in the present embodiment, the second narrow circular groove 121b of width of the first circular groove 121a setting gradually towards electromagnetism portion 200 directions and ratio the first circular groove 121a, the first and second circular groove 121b is for changing the flow direction or the switch supply port 115b and control mouthful 113b and exhaust port 117b of fluid.
Electromagnetism portion 200 is for the valve portion 100 of turning round, and it comprises: in order to move up and down the spool 120 of valve portion 100 and the bobbin 210 of coiling coil 220; Housing 230 around the outer circumferential face of bobbin 210; The plunger 240 that can arrange up or down on the internal diameter of bobbin 210; Thereby be fixed on the core portion of plunger 240 and the bar portion 250 of the lower end in contact of spool 120; Be arranged in the core portion 260 of plunger 240 one end; Be arranged in the yoke portion 270 of plunger 240 the other ends; The terminal part 280 of contact in yoke portion 270.And, comprise and be located at terminal part 280 terminal 294 and forked terminal 296 below.
Bobbin 210 is drums of hollow, and at its outer circumferential face coiling coil 220.In the hollow portion of bobbin 210, part is accommodated core portion 260 with yoke portion 270 and is made it separated by a certain interval.
Plunger 240 is arranged between core portion 260 and yoke portion 270, and because power supply puts on magnetic field that coil 220 occurs and towards core portion 260 side shiftings.Now, in core portion 260, be provided with the first core portion 260 hollow portions of magnetic force in the segment set that is being adjacent to plunger 240, and in the first core portion 260 hollow portions, part is accommodated one end of plunger 240.And, in the upper end of the first core portion 260 hollow portions, be provided with second core portion 260 hollow portions less than the diameter of the first core portion 260 hollow portions, and the upper end of accommodating bar portion 250 on the second core portion 260 hollow portions can be moved.
Yoke portion 270 is provided with the first yoke portion 270 hollow portions in the part with plunger 240 adjacency, and at the first yoke portion 270 hollow portions, part is accommodated the other end of plunger 240.In the bottom of the first hollow portion, be provided with second hollow portion less than the diameter of the first hollow portion, and can move in the lower end that the second hollow portion is accommodated bar portion 250.
This yoke portion 270 as shown in Figure 2, separated by a certain interval with core portion 260.Now, core portion 260 and yoke portion 270 are separated by 1.5 to 2.5mm, if core portion 260 is larger than it with the interval of yoke portion 270, magnetic force will reduce, if less than it, the reset of plunger 240 when just (off) power supply is closed in impact.
And yoke portion 270 as shown in Figure 5, has first to the 9th S with the part of core portion 260 adjacency 1-S 9, at first surface S 1with second S 2border on form first jiao of θ 1.And, at second S 2with the 3rd S 3border on form second jiao of θ 2, and at the 3rd S 3with fourth face S 4border on form triangle θ 3.And, at fourth face S 4with the 5th S 5border on form the 4th jiao of θ 4, and at the 5th S 5with the 6th S 6border on form the 5th jiao of θ 5.At the 6th S 6with the 7th S 7border, the 7th S 7with octahedral S 8border, octahedral S 8with the 9th S 9border on, form respectively the 6th jiao to the 8th jiao θ 6, θ 7, θ 8.Now, first surface S 1with fourth face S 4, the 6th S 6with the 9th S 9be parallel to each other, the 3rd S 3with octahedral S 8be parallel to each other.And, first jiao of θ 1with second jiao of θ 2, the 4th jiao of θ 4, hexagonal θ 6, heptangle θ 7, anistree θ 8towards with triangle θ 3, the 5th jiao of θ 5different directions is crooked, first jiao of θ 1with second jiao of θ 2, the 4th jiao of θ 4to heptangle θ 7form obtuse angle, and triangle θ 3with anistree θ 8form right angle.And yoke portion 270 comprises accordingly: first surface S 1; From first surface S 1extend and towards second crooked S of lopsidedness ground 2; From second S 2extend and towards a side crooked the 3rd S vertically 3; From the 3rd S 3extend and towards the fourth face S of opposite side bending 4; From fourth face S 4extend and towards the 5th crooked S of lopsidedness ground 5; From the 5th S 5extend and towards the 6th S of opposite side bending 6; From the 6th S 6extend and towards the 7th crooked S of lopsidedness ground 7; From the 7th S 7extend and towards a side crooked octahedral S vertically 8; From octahedral S 8extend and towards curving and with first surface S 1certain fields overlap the to each other the 9th S be arrangeding in parallel 9.Due to this structure, first surface S 1with the 9th S 9between the first width P 1with, fourth face S 4with the 9th S 9between the second width P 2with, the 6th S 6with the 9th S 9between the 3rd width P 3different.Now, the first width P 1with the second width P 2and the 3rd width P 3there is the first width P 1> the second width P 2> the 3rd width P 3relation.
According to the yoke portion 270 of the present embodiment, by this shape, can obtain for controlling the enough magnetic force of high pressure and high flow capacity.And retain longer operation range (long stroke) thus can increase overlapping (amount that inflow entrance/exhaust port is blocked).
On the other hand, in the second core portion hollow portion of core portion 260 and the second yoke portion hollow portion of yoke portion 270, liftoff first and second lining 292b that is pressed into respectively of being separated by.First and second lining 292b gets rid of the interference that the processing stage due to yoke portion 270 and core portion 260 and plunger 240 occurs, and makes the motion up and down of plunger 240 smooth and easy, and reduces to greatest extent double swerve and the inclination of plunger 240.And then, the second core portion hollow portion in core portion 260, setting position determines parts 290.
On the other hand, the present invention can set up guide portion 215 in order to be integrally formed core portion 260 with yoke portion 270.
Guide portion 215 is designed to the cylindrical shape of hollow in order to hold core portion 260 with the certain fields of yoke portion 270.And, for this guide portion 215 is installed, as shown in Figure 6, in core portion 260, be provided with for the step of guide portion 215 is installed with the periphery of yoke portion 270.
So, when the present invention possesses guide portion 215, core portion 260 and yoke portion 270 can be formed to one, thereby when applying external force, can prevent the distortion of solenoid valve for transmission, and improve durability.
Bar portion 250 is fixed on the core portion of plunger 240, and its upper end maintains the state with the lower end in contact of spool 120.Bar portion 250 moves in the second core portion 260 hollow portions of core portion 260 and the second yoke portion 270 hollow portions of yoke portion 270.
Have said structure according to the solenoid valve for transmission of first embodiment of the invention, as shown in Figure 7, first, in coil 220 sides, apply power supply, core portion 260 is magnetized with yoke portion 270 and plunger 240, plunger 240 is towards core portion 260 side shiftings accordingly.Now, the bar portion 250 being fixed in core portion 260 also moves together with plunger 240.And when bar portion 250 moves in the early stage, before reaching specific current value, bar portion 250 rises slowly with plunger 240, thereby the pilot pressure being undertaken by control mouthful 113b does not put on clutch side., bar portion 250 towards above while moving, except magnetic force, there is no applying of other external force, can by control room 113a with control a mouthful 113b too much pilot pressure is not put on to clutch side.Therefore, can reduce to greatest extent the leakage of oil pressure.After this, when surpassing specific current value, magnetic force increases thereupon, the open supply port thereby 240 of bar portion 250 and plungers rise, and the pilot pressure in the 113a of control room rises accordingly.The pilot pressure so rising is fed to refluxing chamber 112 by backflow stream 110 by one segment fluid flow, accordingly due to the elastic force of the interior return pressure of refluxing chamber 112 and spring 130, and applies downward force towards spool 120 sides.And, now, utilize magnetic force and apply upward force towards spool 120 sides., spool 120 is when move upward, by its upward force and downward force, balancedly regulates power, thereby the line pressure that has realized pilot pressure is controlled.
As mentioned above, according to the solenoid valve for transmission of the present embodiment, there is plunger and core portion and possess the yoke portion of three width of 1.5 to 2.5mm of being separated by with core portion, thereby can obtain for controlling the enough magnetic force of high pressure and high flow capacity.
Solenoid valve for transmission according to second embodiment of the invention is described with reference to the accompanying drawings.In aftermentioned content, with the aforesaid content mutually repeating according to the explanation of the solenoid valve for transmission of first embodiment of the invention, carried out omitting or being simply illustrated.
Fig. 8 is according to the sectional view of the solenoid valve for transmission of second embodiment of the invention, Fig. 9 is the sectional view of the B part of expanded view diagram 8, Figure 10 be according to the solenoid valve for transmission of second embodiment of the invention with according to before the output waveform figure of mensuration during the solenoid valve for transmission running of technology.
According to the solenoid valve for transmission of second embodiment of the invention, as shown in Figure 8, comprise valve portion 100, for the electromagnetism portion 200 of actuating valve portion 100.Now, according to the electromagnetism portion 200 of the solenoid valve for transmission of second embodiment of the invention, identical with the aforesaid solenoid valve for transmission according to first embodiment of the invention, therefore description thereof is omitted.And, when producing that the first and second embodiment's NH type is with the solenoid valve for transmission of NL type according to the present invention, can jointly use electromagnetism portion 200, so can not there is other production line, thereby can reduce operating cost thus.And, owing to using identical parts (electromagnetism portion), therefore can improve the stability of the solenoid valve for transmission of production.
According to the valve portion 100 of the present embodiment, be arranged on the valve body (not shown) with plural stream, thereby the fluid to the oil pressure supply source supply by outside applies certain pilot pressure, and be fed to clutch (not shown) side, and comprise the support 110 of hollow, the spool 120 arranging movably in support 110, spring 130 and the pressure regulating screw that is located at respectively the top of spool 120.
Spool 120 is arranged in support 110 inside and can moves, and is provided with more than one circular groove on its outer circumferential face.In the present embodiment, as this circular groove, the first circular groove 121a and the second wide circular groove 121b of ratio the first circular groove 121a width have been enumerated.
Support 110 has the hollow shape of the movement of portion's guide spool 120 within it, is provided with successively from top to bottom refluxing chamber 112, supply room 115a, control room 113a, discharge chamber 117a in spool 120.Now in refluxing chamber 112 and one end of supply room 115a, control room 113a and discharge chamber 117a, be respectively equipped with opening portion 118, supply port 115b, control mouthful 113b, an exhaust port 117b, and on refluxing chamber 112 tops, be provided with the first auxiliary discharge chamber 111a and the first auxiliary exhaust port 114a that is located at its one end.And, in discharge chamber 117a bottom, be provided with the second auxiliary discharge chamber 111b and the second auxiliary exhaust port 114b that is located at its one end.Now, as shown in Figure 9, backflow stream 119 is designed to have 0.5 to 1.5mm diameter R to the present embodiment, and has 1.5 to 2.5mm thickness T, thereby can increase overlapping.
Have this structure according to the solenoid valve for transmission of the present embodiment, as shown in figure 10, can provide a kind of and increase than its response speed of former solenoid valve for transmission, and can remove the solenoid valve for transmission of the impact occurring due to undershoot (undershoot).And, thereby prevent that accordingly the instantaneous variation of clutch engagement force from can prevent speed change impact, and improve the durability of automatic transmission.
According to the solenoid valve for transmission of the present embodiment, there is plunger and core portion as mentioned above and possess the be separated by yoke portion of three width of 1.5 to 2.5mm with core portion, thereby can obtain for controlling the enough magnetic force of high pressure and high flow capacity, thereby and its backflow stream 119 be designed to have 0.5 to 1.5mm diameter and 1.5 to 2.5mm thickness, be designed to have certain length and can increase overlapping.
Above with reference to drawings and Examples, be illustrated, but in the scope of the technological thought of the present invention that the well-known worker who is familiar with affiliated technical field records in not exceeding claims, can revise variedly and change the present invention.

Claims (10)

1. a solenoid valve for transmission, it comprises the valve portion that electromagnetism portion turns round with action along with above-mentioned electromagnetism portion, it is characterized in that, above-mentioned electromagnetism portion comprises:
One core portion;
One yoke portion, separated by a certain interval with above-mentioned core portion, and towards the direction that approaches above-mentioned core portion, be provided with successively mutually different the first width and the second width and the 3rd width on the face parallel with length direction;
One plunger, carries out back and forth movement by above-mentioned core portion and yoke portion, and the above-mentioned valve portion of turning round,
Wherein, above-mentioned valve portion comprises:
Be provided with the hollow stent of an above cell and interface;
Be provided with more than one circular groove, and the spool moving up and down in above-mentioned support by above-mentioned electromagnetism portion,
Above-mentioned the first width is larger than above-mentioned the second width, and above-mentioned the second width is larger than above-mentioned the 3rd width,
Above-mentioned yoke portion is as the criterion and comprises with length direction end face:
Form the first surface of above-mentioned the first width and the 9th;
Form the fourth face of above-mentioned the second width and the 9th;
Form the 6th and the 9th of above-mentioned the 3rd width,
Between above-mentioned first surface and above-mentioned fourth face, be provided with second of inclination with vertical the 3rd,
Between above-mentioned fourth face and above-mentioned the 6th, be provided with the 5th of inclination,
At the most end of above-mentioned the 6th, be provided with the 7th of inclination and be connected with the most end of above-mentioned the 9th and vertical octahedral.
2. solenoid valve for transmission according to claim 1, is characterized in that, the certain intervals between above-mentioned yoke portion and above-mentioned core portion is 1.5 to 2.5mm.
3. solenoid valve for transmission according to claim 2, is characterized in that, above-mentioned support is provided with discharge chamber, control room, supply room and refluxing chamber successively towards above-mentioned valve portion direction,
Above-mentioned spool is provided with the first circular groove and second circular groove narrower than the width of above-mentioned the first circular groove successively towards above-mentioned valve portion direction.
4. solenoid valve for transmission according to claim 2, is characterized in that, above-mentioned support is provided with refluxing chamber, supply room, control room and discharge chamber successively towards above-mentioned valve portion direction,
Above-mentioned spool is provided with the first circular groove and second circular groove wider than the width of above-mentioned the first circular groove successively towards above-mentioned valve portion direction.
5. according to the solenoid valve for transmission described in claim 3 or 4, it is characterized in that, comprising:
Be located at the backflow stream on the refluxing chamber of above-mentioned support;
Be located at the supply port of supply room one end of above-mentioned support;
Be located at the control stream on the control room of above-mentioned support;
Be located at the control mouth of one end, control room of above-mentioned support; And
Be located at the exhaust port of discharge chamber one end of above-mentioned support.
6. solenoid valve for transmission according to claim 5, is characterized in that, above-mentioned backflow stream is connected with above-mentioned control stream, and the diameter of above-mentioned backflow stream is 0.5 to 1.5mm, and thickness is 1.5 to 2.5mm.
7. solenoid valve for transmission according to claim 5, is characterized in that, also comprises the filter being arranged in above-mentioned supply port and above-mentioned control mouth at least one.
8. solenoid valve for transmission according to claim 7, it is characterized in that, in above-mentioned supply port and above-mentioned control mouth, at least one, be provided with filter mounting groove, and it is protruding at the most end of above-mentioned filter, to be respectively equipped with the installation of installing in above-mentioned filter mounting groove.
9. solenoid valve for transmission according to claim 1, is characterized in that, also comprises and being designed to around the periphery of above-mentioned core portion and above-mentioned yoke portion so that above-mentioned core portion and above-mentioned yoke portion shape all-in-one-piece guide portion.
10. solenoid valve for transmission according to claim 9, is characterized in that, be respectively equipped with step, and above-mentioned guide portion is located on above-mentioned step in the periphery of above-mentioned core portion and above-mentioned yoke portion.
CN201080005947.1A 2010-01-22 2010-10-22 Solenoid valve for transmission Active CN102301167B (en)

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