CN104373657A - Overflow type direct-proportionally pressure-reducing electromagnetic valve for AT (automatic transmission) - Google Patents
Overflow type direct-proportionally pressure-reducing electromagnetic valve for AT (automatic transmission) Download PDFInfo
- Publication number
- CN104373657A CN104373657A CN201310348652.XA CN201310348652A CN104373657A CN 104373657 A CN104373657 A CN 104373657A CN 201310348652 A CN201310348652 A CN 201310348652A CN 104373657 A CN104373657 A CN 104373657A
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- Prior art keywords
- armature
- spool
- type direct
- valve body
- valve
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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
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses an overflow type direct-proportionally pressure-reducing electromagnetic valve for an AT (automatic transmission). The overflow type direct-proportionally pressure-reducing electromagnetic valve comprises a sealed type main valve component and an electromagnetic component. The sealed type main valve component comprises a valve body. A valve element with a cavity is arranged in an inner cavity of the valve body. A bearing sleeves each of the left end and the right end of the valve element. An armature is positioned between the two bearings and sleeves the valve element. A reset spring is positioned between the armature and the bearing at the right end and sleeves the valve element. One end of a sealing tube sleeves the small-diameter portion of the left end of the valve body while the other end of the sealing tube sleeves stop iron to encircle the valve element, the armature, the bearings and the reset spring in the tube. The stop iron partially sleeves the valve element and the armature. An adjusting screw mounted at the center of the stop iron is arranged in the cavity of the valve element through an adjusting spring to be connected with the valve element. A coil is wound around the sealing tube. A yoke encircles the coil, one end of the yoke is connected with the valve body, and the other end of the yoke is connected with the stop iron through a pole shoe. The overflow type direct-proportionally pressure-reducing electromagnetic valve is ultrahigh in control accuracy, small and exquisite in structure, convenient to mount and applicable to various hydraulic systems in need of accurate pressure control.
Description
Technical field
The present invention relates to a kind of vacuum solenoid valve, be especially a kind ofly used for AT(hydraulic moment changeable speed changer) two two-way overfalling type direct proportaion vacuum solenoid valves controlling of hydraulic system accurate pressure.
Background technique
External automatic transmission is used for the history that passenger car has 30 years.The solenoid valve being applied to automatic transmission also has all styles of model and feature because producer is different with the feature of speed changer.In middle small displacement vehicle automatic transmission vehicle, because transmitting torque is less, therefore the working pressure of proportional electromagnetic valve is lower.Traditional middle small displacement vehicle solenoid valve for transmission, although working pressure is lower, the requirement for solenoid valve pressure controling precision is very high.In the actual using process of speed changer, often there is the situation of filtration inefficiencies along with the increase of vehicle service life in the filtration system that its hydraulic system carries, the proportional electromagnetic valve of pilot pressure is caused to be subject to the pollution of working medium, a large amount of pollutant enters main valve and constantly assembles, the contaminated thing in the space of need of work in solenoid valve is caused to occupy, thus making the parts such as solenoid valve armature lose locomitivity, therefore solenoid valve loses the job ability.In addition, moving element wearing and tearing aggravation in solenoid valve is caused owing to polluting, though contaminant accumulation does not cause the moving elements such as armature to lose locomitivity in a short time, but the pressure controling precision of solenoid valve obviously departs from the normal requirement used, vehicle occurs that shift shock is large in the process of moving, gear shifting action is slow, the fault such as vehicle shake in running process, and oil consumption compared with normal situation obviously increases.Because medium pollution causes significantly reduce the working life of proportional electromagnetic valve, automatic transmission is reduced to 5 ~ 80,000 kilometers by normal more than 200,000 kilometers service life.In the data that at home and abroad specialized maintenance manufacturer provides, the automatic transmission of 70% needs often and repeatedly keep in repair because oil pollution causes solenoid valve reduced lifespan and inefficacy.
Summary of the invention
Life time decay problem after the solenoid valve caused because of medium pollution existed to solve existing AT proportional pressure-reducing valve lost efficacy, the invention provides a kind of hermetically sealed main valve structure of having, resistant to pollution AT overfalling type proportional pressure relief electromagnetic valve, this valve can by most medium pollution particulate blockage outside main valve, the friction pair of the spool of non-magnet material through the processing of special chemical processing mode adopted and the special engineering plastics bearing composition of development can at intermediate pollution work, efficiently solve the solenoid valve reduced lifespan because medium pollution causes and Problem of Failure.
For achieving the above object, technological scheme of the present invention is:
A kind of AT overfalling type direct proportaion vacuum solenoid valve, comprise sealed type main valve assembly and Electrical heads assembly formation, described sealed type main valve assembly comprises valve body, body cavity settles the spool with cavity, about spool, end is socketed with bearing, armature is between two bearings and be socketed on spool, gap is there is between valve body and armature, return spring is between armature and the bearing of right-hand member and be placed on spool, sealed pipe one end is socketed in valve body left end small diameter portion, the sealed pipe the other end is socketed on buting iron by spool, armature, bearing, return spring is enclosed in pipe, buting iron part is enclosed within outside spool and armature, gap is there is between buting iron and armature, the adjusting screw being installed on buting iron central position is placed in spool cavity by Regulation spring and connects with spool, coil is wound with outside sealed pipe, yoke is enclosed in outside coil, one end connects valve body, the other end connects buting iron by pole shoe.
As preferably, described Electrical heads assembly comprises coil, yoke, pole shoe composition, and coil, yoke and pole shoe adopt plastic capsulation mode to become to be integrated.
As preferably, be socketed seal ring in the draw-in groove of described valve body left end head, filter screen is installed at medium inlet place.
As preferably, described valve body, spool, bearing, sealed pipe, buting iron, adjusting screw form the cavity that a closed inside exists space.
As preferably, described valve body, yoke, pole shoe, buting iron, armature form flux loop.
As preferably, described spool operationally, reciprocatingly slides between two bearings.
As preferably, described spool adopts to rivet into armature and is integrated.
As preferably, described coil is provided with input signal connector assembly.
As preferably, described spool is made up of non-permeable material, adopts Specialty Chemical processing mode finished surface.
As preferably, described bearing material is special engineering plastics.
As preferably, during described solenoid valves work, armature moves right and produces suction between valve body, and armature moves right.
Beneficial effect of the present invention:
1, the present invention adopts sealed mode main valve structure, only there is 0.01mm level gap at the small mating part of spool and bearing.Most medium pollution thing can be blocked in outside main valve sealed cavity, make proportional electromagnetic valve within the service life of automatic transmission, there will not be the solenoid valve caused because of medium pollution particle bulk deposition to lose efficacy and degradation problem.
2, the present invention adopts and forms friction pair through the spool of the non-magnet material of special chemical processing mode processing and the special engineering plastics bearing of development, normally can work under the condition of intermediate pollution, can stop to cause magnetic valve performance to decline because medium pollution thing that minute quantity enters main valve is adhered to friction pair and the problem of life time decay
3, the present invention has high control accuracy, compact structure, easy for installation, long service life, is applicable in the multiple hydraulic system needing accurate pressure to control.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the present invention's oil circuit flow schematic diagram when working.
Fig. 3 is working principle schematic diagram of the present invention.
Wherein reference character is: 1-valve body, 2-spool, 3-bearing, 4-sealed pipe, 5-coil, 6-buting iron, 7-yoke, 8-pole shoe, 9-adjusting screw, 10-Regulation spring, 11-armature, 12-return spring, 13-seal ring, 14-filter screen.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1, 2, shown in 3, a kind of AT overfalling type direct proportaion vacuum solenoid valve, comprise sealed type main valve assembly and Electrical heads assembly formation, described sealed type main valve assembly comprises valve body 1, valve body 1 inner chamber settles the spool 2 with cavity, spool about 2 end is socketed with bearing 3, armature 11 is between two bearings 3 and be socketed on spool 2, gap is there is between valve body 1 and armature 11, return spring 12 is between armature 11 and the bearing 3 of right-hand member and be placed on spool 2, sealed pipe 4 one end is socketed in valve body 1 left end small diameter portion, sealed pipe 4 the other end is socketed on buting iron 6 by spool 2, armature 11, bearing 3, return spring 12 is enclosed in pipe, buting iron 6 part is enclosed within outside spool 2 and armature 11, gap is there is between buting iron 6 and armature 11, the adjusting screw 9 being installed on buting iron 6 central position is placed in spool 2 cavity by Regulation spring 10 and connects with spool 2, coil 5 is wound with outside sealed pipe 4, yoke 7 is enclosed in outside coil 5, one end connects valve body 1, the other end connects buting iron 6 by pole shoe 8.Described Electrical heads assembly comprises coil 5, yoke 7, pole shoe 8 form, and coil 5, yoke 7 and pole shoe 8 adopt plastic capsulation mode to become to be integrated.Socket seal ring 13 in the draw-in groove of described valve body 1 left end head, filter screen 14 is installed at medium inlet place.Described valve body 1, spool 2, bearing 3, sealed pipe 4, buting iron 6, adjusting screw 9 form the cavity that a closed inside exists space.Described valve body 1, yoke 7, pole shoe 8, buting iron 6, armature 11 form flux loop.Described spool 2 operationally, reciprocatingly slides between two bearings 3.Described spool 2 adopts to rivet into armature 11 and is integrated.Described coil 5 is provided with input signal connector assembly.Described spool 2 is made up of non-permeable material, adopts extraordinary processing mode finished surface.Described bearing 3 material is special engineering plastics.When described solenoid valves works, armature 11 moves right and produces suction between valve body 1, and armature 11 moves right.This valve working principle is: as shown in Figure 3, is provided with a damping hole before electromagnetic valve mouth A mouth, and this damping hole is directly configuration settings value.Medium is flowed to control mouth A mouth through the damping hole be arranged between P mouth and A mouth by system pressure supplying mouth P mouth.Under no electric circuit state, electromagnetic valve mouth A mouth is communicated with drain tap T mouth, and the medium being flowed into A mouth by P mouth gushes from T mouth; Between this A mouth and T mouth, medium channel is made up of valve body 1 and spool 2.Because the medium circulation area now between A mouth to T mouth is much larger than the medium circulation area of damping hole before A mouth, P mouth pressure reduces as the identical value of T mouth pressure with the acting in conjunction of T mouth draining through damping hole, because back pressure after T mouth is that 0(T mouth is communicated with air), so A mouth pilot pressure
identically with T mouth pressure be 0.
In the equation of equilibrium of solenoid valve, hydraulic coupling left
the spring force of return spring 12 left
make a concerted effort and electromagnetic force to the right
the spring force of Regulation spring 10 to the right
the balance of making a concerted effort formed, the wherein spring force of return spring 12
with the spring force of Regulation spring 10
be designed to approximately equal value when structural design, the equilibrium approximation of solenoid valve is in hydraulic coupling
and electromagnetic force
.
When input control signal or when changing control signal dutyfactor value (the corresponding current value changed by coil), the pulsewidth modulation signal converting of different dutyfactor values is turned to different electromagnetic forces and exports to armature 11 by proportion electro-magnet, armature 11 moves right by electromagnetic force, together with armature 11 rivets with spool 2, spool 2 moves right.Spool 2 moves right and causes medium channel area between A mouth and T mouth to reduce, and the medium being flowed to A mouth by P mouth can only part gush from the medium channel between valve body 1 and spool 2, and A mouth is due to the accumulation generation certain pressure of medium
.A mouth pressure acts on spool 2, and active area is the valve body 1 endoporus area indicated in Fig. 3
, produce hydraulic coupling left
, when the solenoid valve that promotion spool 2 moves right
with act on spool 2 hydraulic coupling left
time equal, spool 2 reaches balance stop motion, and A mouth pressure is pilot pressure corresponding to control signal.Thus, the A mouth pilot pressure needed can be obtained by the change of control signal.
Practical application shows, this valve has very high control accuracy, and compact structure is easy for installation, is applicable in the multiple hydraulic system needing accurate pressure to control, in the hydraulic system as automatic transmission case such as AT.
For this proportion electro-magnet, ouput force
and the pass between electric current I is:
Wherein,
---electromagnetic attraction (with curent change)
I---current value (controlled input quantity)
---scaling factor (structure is definite value after determining)
The equation of equilibrium of spool 2 is:
In formula:
---Regulation spring bullet 10 spring force, initial set value;
---electromagnetic attraction, is directly proportional to electric current;
---hydraulic feedback power, its value is
,
---A mouth pressure,
---hydraulic feedback area;
---return spring 12 spring force, initial set value.
Outlet pressure
and the pass between electric current I is:
increase along with the increase by coil 5 equivalent current I, the input equivalent current of solenoid valve and the pilot pressure of solenoid valve
direct proportionality.
Claims (11)
1. an AT overfalling type direct proportaion vacuum solenoid valve, comprise sealed type main valve assembly and Electrical heads assembly formation, it is characterized in that, described sealed type main valve assembly comprises valve body (1), valve body (1) inner chamber settles the spool (2) with cavity, spool (2) left and right end is socketed with bearing (3), armature (11) to be positioned between two bearings (3) and to be socketed on spool (2), gap is there is between valve body (1) and armature (11), be placed on spool (2) between the bearing (3) that return spring (12) is positioned at armature (11) and right-hand member, sealed pipe (4) one end is socketed in valve body (1) left end small diameter portion, sealed pipe (4) the other end is socketed on buting iron (6) by spool (2), armature (11), bearing (3), return spring (12) is enclosed in pipe, buting iron (6) part is enclosed within spool (2) and armature (11) outward, gap is there is between buting iron (6) and armature (11), the adjusting screw (9) being installed on buting iron (6) central position is placed in spool (2) cavity by Regulation spring (10) and connects with spool (2), sealed pipe (4) outside is wound with coil (5), yoke (7) is enclosed in coil (5) outward, one end connects valve body (1), the other end connects buting iron (6) by pole shoe (8).
2. a kind of AT overfalling type direct proportaion vacuum solenoid valve according to claim 1, it is characterized in that, described Electrical heads assembly comprises coil (5), yoke (7), pole shoe (8) composition, and coil (5), yoke (7) and pole shoe (8) adopt plastic capsulation mode to become to be integrated.
3. a kind of AT overfalling type direct proportaion vacuum solenoid valve according to claim 1, is characterized in that, socket seal ring (13) in the draw-in groove of described valve body (1) left end head, filter screen (14) is installed at medium inlet place.
4. a kind of AT overfalling type direct proportaion vacuum solenoid valve according to claim 1, it is characterized in that, there is the cavity in space in described valve body (1), spool (2), bearing (3), sealed pipe (4), buting iron (6), adjusting screw (9) composition closed inside.
5. a kind of AT overfalling type direct proportaion vacuum solenoid valve according to claim 1, is characterized in that, described valve body (1), yoke (7), pole shoe (8), buting iron (6), armature (11) form flux loop.
6. a kind of AT overfalling type direct proportaion vacuum solenoid valve according to claim 1, it is characterized in that, described spool (2) operationally, reciprocatingly slides between two bearings (3).
7. a kind of AT overfalling type direct proportaion vacuum solenoid valve according to claim 1, it is characterized in that, described spool (2) adopts to rivet into armature (11) and is integrated.
8. a kind of AT overfalling type direct proportaion vacuum solenoid valve according to claim 1, is characterized in that, described coil (5) is provided with input signal connector assembly.
9. a kind of AT overfalling type direct proportaion vacuum solenoid valve according to claim 1 or 6, it is characterized in that, described spool (2) is made up of non-permeable material, adopts extraordinary processing mode finished surface.
10. a kind of AT overfalling type direct proportaion vacuum solenoid valve according to claim 1, it is characterized in that, described bearing (3) material is special engineering plastics.
11. a kind of AT overfalling type direct proportaion vacuum solenoid valves according to claim 1, is characterized in that, when described solenoid valves works, armature (11) moves right and produces suction between valve body (1), and armature (11) moves right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310348652.XA CN104373657A (en) | 2013-08-12 | 2013-08-12 | Overflow type direct-proportionally pressure-reducing electromagnetic valve for AT (automatic transmission) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310348652.XA CN104373657A (en) | 2013-08-12 | 2013-08-12 | Overflow type direct-proportionally pressure-reducing electromagnetic valve for AT (automatic transmission) |
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| Publication Number | Publication Date |
|---|---|
| CN104373657A true CN104373657A (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310348652.XA Pending CN104373657A (en) | 2013-08-12 | 2013-08-12 | Overflow type direct-proportionally pressure-reducing electromagnetic valve for AT (automatic transmission) |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847951A (en) * | 2015-06-04 | 2015-08-19 | 昆山大庚汽车配件有限公司 | Novel high-precision electromagnetic valve |
| CN107949739A (en) * | 2015-09-16 | 2018-04-20 | Ｋｙｂ株式会社 | Solenoid valve |
| CN110886891A (en) * | 2019-12-03 | 2020-03-17 | 中国航发控制***研究所 | Multistage valve core and solenoid valve based on flexible collision |
| CN110966449A (en) * | 2019-12-16 | 2020-04-07 | 一汽解放汽车有限公司 | Intelligent control proportion solenoid valve device |
| CN111442128A (en) * | 2019-01-16 | 2020-07-24 | 上海气立可气动设备有限公司 | Electric control large-capacity proportional valve |
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| CN201462071U (en) * | 2009-05-05 | 2010-05-12 | 贵州红林机械有限公司 | Two-bit three-way magnetic valve for engine braking system |
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| CN102042276A (en) * | 2009-10-16 | 2011-05-04 | 中国航天科技集团公司第六研究院第十一研究所 | Inverse proportion pressure reducing valve |
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| US20110285484A1 (en) * | 2009-01-28 | 2011-11-24 | Schaeffler Technologies Gmbh & Co. Kg | Proportional magnet for a hydraulic directional control valve and method for the production thereof |
| CN103032619A (en) * | 2012-12-14 | 2013-04-10 | 兰溪市中元电器有限公司 | Two-position three-way inverse proportion decompression electromagnetic valve for AT (Automatic Transmission) |
| CN203488821U (en) * | 2013-08-12 | 2014-03-19 | 浙江弘驰科技股份有限公司 | Overflow type direct proportion pressure reduction solenoid valve for AT |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090090881A1 (en) * | 2007-10-04 | 2009-04-09 | Erwin Mueller | Electromagnetic pressure valve |
| US20110285484A1 (en) * | 2009-01-28 | 2011-11-24 | Schaeffler Technologies Gmbh & Co. Kg | Proportional magnet for a hydraulic directional control valve and method for the production thereof |
| CN201462071U (en) * | 2009-05-05 | 2010-05-12 | 贵州红林机械有限公司 | Two-bit three-way magnetic valve for engine braking system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847951A (en) * | 2015-06-04 | 2015-08-19 | 昆山大庚汽车配件有限公司 | Novel high-precision electromagnetic valve |
| CN107949739A (en) * | 2015-09-16 | 2018-04-20 | Ｋｙｂ株式会社 | Solenoid valve |
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| CN111442128A (en) * | 2019-01-16 | 2020-07-24 | 上海气立可气动设备有限公司 | Electric control large-capacity proportional valve |
| CN111442128B (en) * | 2019-01-16 | 2024-05-24 | 上海气立可气动设备有限公司 | Electric control large-capacity proportional valve |
| CN110886891A (en) * | 2019-12-03 | 2020-03-17 | 中国航发控制***研究所 | Multistage valve core and solenoid valve based on flexible collision |
| CN110966449A (en) * | 2019-12-16 | 2020-04-07 | 一汽解放汽车有限公司 | Intelligent control proportion solenoid valve device |
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Effective date of registration: 20181011 Address after: 321000 Jinhua, Zhejiang Wucheng District, Wucheng Binlin Street South Street Applicant after: JINHUA HONGCHANG ELECTRICAL EQUIPMENT CO., LTD. Address before: 321017 Jinhua, Zhejiang Wucheng District, Wucheng Binlin Street South Street Applicant before: ZHEJIANG HONGCHI TECHNOLOGY CO., LTD. |
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Application publication date: 20150225 |
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