CN102979943B - Electromagnetic valve and manufacturing method thereof - Google Patents
Electromagnetic valve and manufacturing method thereof Download PDFInfo
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- CN102979943B CN102979943B CN201210513299.1A CN201210513299A CN102979943B CN 102979943 B CN102979943 B CN 102979943B CN 201210513299 A CN201210513299 A CN 201210513299A CN 102979943 B CN102979943 B CN 102979943B
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- iron core
- coil component
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- solenoid valve
- electromagnetic valve
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Abstract
The invention discloses an electromagnetic valve and a manufacturing method thereof. The electromagnetic valve comprises an iron core, a coil assembly and a sheath, and is characterized in that the coil assembly mainly consists of a coil and an integral injection molding material, wherein the coil is completely encapsulated in the integral injection molding material; and the integral injection molding material forms an insulating material between the coil assembly and the iron core. According to the electromagnetic valve, lightening and thinning of the coil assembly in the axial direction and miniaturization in the radial direction can be realized, the coil in the coil assembly is not required to be wound on a framework which is premade and is used as one of product components, but a non-framework structure is directly adopted, so that the production process of the framework is reduced, and the process flow is simplified; and the coil assembly is changed to be formed through one-time integral injection modeling, so that a good packaging effect is achieved, and the reliability of the electromagnetic valve is greatly improved. In batch production of the electromagnetic valve, the consistency of performance of the coil assemblies of the electromagnetic valves between batches can be guaranteed excellently, so that the consistency of performance of the electromagnetic valve is greatly improved.
Description
Technical field
The present invention relates to a kind of solenoid valve and manufacture method thereof for various electric equipments such as relay, contactor, electromagnetic switch valves, belong to solenoid valve design and manufacturing technology field.
Background technique
Solenoid valve is widely used a kind of automated execution device in modern industry, and the important industrial production as directly related with enterprise safety operation, technical development, has very important status in various fields.Final controlling element in final controlling element in many low-pressure electronic equipment products (as contactor, relay, circuit breaker etc.) and automotive industry, engineering machinery, farm machinery (as gearbox solenoid valve, oil feed pump solenoid valve, hydraulic circuit control valve etc.) all seriously relies on this series products.Electromagnet is the vitals in solenoid valve, and in actual use, electromagnet is divided into polytype, as E type, solenoid type, bat mould assembly, disc type etc., response short at a few thing stroke requires the occasion high, electromagnetic attraction is large, and coiled electrical magnet is widely used.Along with social civilization and scientific and technical progress, solenoid valve is just fast-developing towards directions such as miniaturization, low energy consumption, high response, high conformity.Wherein, electromagnet miniaturization is mainly started with from optimizing structure, promote the aspects such as material property.The optimization of structure is mainly optimization magnetic circuit form, cuts down useless size, comprises iron core and coil two-part.Coil aspect, is mainly the in the situation that of comprehensive consideration, by dwindling wire diameter, reduce coil turn, improving the methods such as winding process with conserve space.
The structure of conventional coil component 5 as shown in Figure 1 in the market, it is mainly comprised of coil 6, skeleton 7 and injection moulding part 8, coil 6 is reeled on skeleton well in advance, as one of product component, then by methods such as dipping lacquer, injection mouldings, makes it sizing.The advantage of this manufacture method is that coil component is made simply, easily realize, but also there is obvious shortcoming: the one, the structure of skeleton 7 and injection moulding part 8 is brought adverse effect to miniaturization to a certain extent, the 2nd, skeleton 7 and injection moulding part 8 first, after complete, in material and surface quality, be difficult to be consistent, can cause skeleton and injection moulding part junction 9 bondings not firm, have the hidden danger of easily throwing off.Above-mentioned shortcoming has been brought adverse effect to the technical development of solenoid valve and reliability.
By CN1270329C, known a kind of electromagnetic valve structure with electromagnet armature, what it was mainly considered is that employing electromagnetic force realizes armature card and electromagnet is located without friction, has saved the mechanical positioning structure that is difficult to carry out manufacturing; What CN1223005A disclosed is a kind of making method of electromagnetic coil, utilizes this patented technology, can realize the accurate location in basin shape housing in electromagnetic coil working process.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of solenoid valve and manufacture method thereof are provided, with the conformity of electromagnetic valve coil component capabilities between guaranteeing batch.
According to technological scheme provided by the invention: solenoid valve, comprise iron core, coil component and sheath, described coil component is sleeved on iron core along the axial direction of iron core, and coil component keeps electrical insulation by insulating material and iron core; Described iron core upper end portion is provided with two lead-in wire leadout holes, described coil component has two lighting outlets of outwards deriving, a part on described length of lead-out wire adopts insulating material to seal, lighting outlet is insulated part that material seals two lead-in wire leadout holes by iron core upper end portion with it and passes, and lighting outlet has electric connection in solenoid valve outside; Described sheath is arranged on coil component and iron core is circumferentially outside; It is characterized in that: described coil component is mainly comprised of coil and integral molded plastic material, described coil is encapsulated in integral molded plastic material completely, and described integral molded plastic material forms the insulating material between coil component and iron core.
As a further improvement on the present invention, described sheath is fixed on the outer surface of iron core and coil component with the Placement of screw thread or welding.
The manufacture method of solenoid valve, is characterized in that: comprise the steps:
(a), on the die main body outer surface of winding mould, dielectric film is set;
(b), at die main body foreign volume around wire, form coil, then on coil, lay insulating material, through dipping lacquer, drying and processing, form coil component;
(c), the active block stop of winding mould one end is pushed aside to the axial direction of winding mould, take off coil component and be installed on the outer circumferential face of iron core, lead-in wire leadout hole by the lighting outlet on coil component from iron core passes and causes solenoid valve outside, then by sheath by screw thread or be welded to connect on the outer surface that is fixed on iron core and coil component;
(d), by the lead-in wire leadout hole on iron core to the inner perfusion of solenoid valve integral molded plastic material, make the sizing of coil component position, described integral molded plastic material has formed the insulating material between coil component and iron core simultaneously.
Described winding mould comprises die main body, in die main body one end, is provided with some active block stops, and every active block stop adopts hinge mode to be connected with die main body, and active block stop can be in both direction rotation location axially and radially.
compared with prior art, advantage is in the present invention:solenoid valve of the present invention can be realized the miniaturization that coil component lightening and footpath in the axial direction makes progress, coil in coil component is without reeling on skeleton well in advance, as one of product component, but directly adopt frameless construction, reduce the production process of skeleton, simplified technological process; And coil component uses disposable integral injection moulding instead, packaging effect is good, and solenoid valve reliability has obtained larger raising.In solenoid valve batch production, solenoid valve manufacture method of the present invention, the conformity of electromagnetic valve coil component capabilities between can very well guaranteeing batch, thus greatly improve the consistency of performance of solenoid valve.
Accompanying drawing explanation
Fig. 1 is existing solenoid valve coil modular construction schematic diagram.
Fig. 2 is the electromagnetic valve structure schematic diagram in the embodiment of the present invention.
Fig. 3 is the structural representation of the coil component that in the embodiment of the present invention, solenoid valve adopts.
Fig. 4 is the structural representation of construction drawing 3 coil parts winding mould used.
Fig. 5 is for making the concrete applicable cases schematic diagram of a coil component of winding mould in Fig. 4.
Fig. 6 is for to be applied to an applicable cases schematic diagram in common-rail injector by solenoid valve of the present invention.
Description of reference numerals: 1-solenoid valve, 2-lighting outlet, 3-iron core, 4-sheath, 5-coil component, 6-coil, 7-skeleton, 8-injection moulding part, 9-skeleton and injection moulding part junction, 10-integral molded plastic material, 11-winding mould, 12-die main body, 13-active block stop, the 14-leadout hole that goes between, 15-fuel incoming pressure interface, 16-common-rail injector, 17-oil injector body, 18-butterfly pad, 19-electromagnet spring, 20-control valve, 21-armature, 22-restricting orifice, 23-meter in hole, the fuel-displaced throttle orifice of 24-, 25-control chamber, 26-control piston, the tight cap of 27-, 28-armature low-pressure cavity.
Embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
As shown in Figure 2 and Figure 3: the solenoid valve 1 in embodiment is mainly comprised of iron core 3, coil component 5 and sheath 4, described coil component 5 is sleeved on iron core 3 along the axial direction of iron core 3, and coil component 5 keeps electrical insulation by insulating material and iron core 3; Described iron core 3 upper end portions are provided with two lead-in wire leadout holes 14, described coil component 5 has two lighting outlets 2 of outwards deriving, a part in described lighting outlet 2 length adopts insulating material to seal, lighting outlet 2 is insulated part that material seals two lead-in wire leadout holes 14 by iron core 3 upper end portions with it and passes, and lighting outlet 2 has electric connection in solenoid valve 1 outside; Described sheath 4 is arranged on coil component 5 and iron core 3 is circumferentially outside, and sheath 4 is fixed on the outer surface of iron core 3 and coil component 5 with the Placement of screw thread or welding.Innovative point of the present invention is: described coil component 5 is mainly comprised of coil 6 and integral molded plastic material 10, and described coil 6 is encapsulated in integral molded plastic material 10 completely, the insulating material that described integral molded plastic material 10 forms between coil component 5 and iron core 3.
The manufacture method of solenoid valve 1 of the present invention comprises the steps:
(a), on die main body 12 outer surfaces of winding mould 11, dielectric film is set;
(b), at die main body 12 foreign volumes around wire, form coil 6, then on coil 6, lay insulating material, through dipping lacquer, drying and processing, form coil component 5;
(c), the active block stop 13 of winding mould 11 one end is pushed aside to the axial direction of winding mould 11, take off coil component 5 and be installed on the outer circumferential face of iron core 3, lead-in wire leadout hole 14 by the lighting outlet on coil component 52 from iron core 3 passes and causes solenoid valve 1 outside, then by sheath 4 by screw thread or be welded to connect on the outer surface that is fixed on iron core 3 and coil component 5;
(d), by the lead-in wire leadout hole 14 on iron core 3 to the inner perfusion integral molded plastic of solenoid valve 1 material 10, make coil component 5 positions sizings, described integral molded plastic material 10 has formed the insulating material between coil component 5 and iron core 3 simultaneously.
Shown in Fig. 4, Fig. 5 is winding mould 11 used in the present invention, it comprises die main body 12, in die main body 12 one end, be provided with some active block stops 13, every active block stop 13 adopts hinge modes to be connected with die main body 12, and active block stop 13 can be in both direction rotation location axially and radially.When coil 6 starts to reel, active block stop 13 is in the radial position shown in Fig. 4.After coil 6 has been reeled, by modes such as heating or dipping lacquers, shape.Then switch active block stop 13, make it in the axial position shown in Fig. 5, and the coil after sizing 6 is taken out.Coil 6 is taked to the work such as integral molded plastic, encapsulation, formed coil component 5.
Shown in Fig. 6 is solenoid valve 1 of the present invention to be applied to the specific embodiment of common-rail injector 16, this common-rail injector 16 is to be used in diesel engine, accompanying drawing is partly expressed with the vertical longitudinal section of common-rail injector 16, and its structure and working principle are described below:
When solenoid valve 1 is during in alive state not, armature 21 is under the pretightening force effect of electromagnet spring 19, close and be pressed on fuel-displaced throttle orifice 24 places of restricting orifice 22 downwards, fuel incoming pressure interface 15 inputs to meter in hole 23 by part high pressure fuel, enter again control chamber 25, make fuel pressure act on control piston 26 upper ends, the direction that control piston 26 is pushed to close downwards, when solenoid valve 1 is energized stream, electromagnetic force is opened absorption armature 21 in the upward direction, make the high pressure fuel in control chamber 25 flow into armature low-pressure cavity 28 by fuel-displaced throttle orifice 24, lead to again a fuel reserve tank (not shown), the fuel pressure that acts on like this control piston 26 upper ends will be reduced to certain amplitude gradually, reach and meet the control piston 26 upwards requirement of action vertically, the needle-valve of common-rail injector 16 is opened, start burner oil, after solenoid valve 1 is de-energized, armature 21 is closed along electromagnet spring 19 pretension directions, control chamber 25 pressure return to initial fuel pressure, control piston 26 will be got back to original state under action of hydraulic force, oil nozzle needle-valve completes and closes, so just completed a course of injection of common-rail injector 16.
Mode of execution is by reference to the accompanying drawings only the exemplary description that the present invention is carried out above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present invention and technological scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (4)
1. solenoid valve (1), comprises iron core (3), coil component (5) and sheath (4), and described coil component (5) is sleeved on iron core (3) above along the axial direction of iron core (3), and coil component (5) keeps electrical insulation by insulating material and iron core (3); Described iron core (3) upper end portion is provided with two lead-in wire leadout holes (14), described coil component (5) has two lighting outlets (2) of outwards deriving, a part in described lighting outlet (2) length adopts insulating material to seal, lighting outlet (2) is insulated part that material seals two the lead-in wire leadout holes (14) by iron core (3) upper end portion with it and passes, and lighting outlet (2) has electric connection in solenoid valve (1) outside; Described sheath (4) is arranged on coil component (5) and iron core (3) is circumferentially outside; It is characterized in that: described coil component (5) is comprised of coil (6) and integral molded plastic material (10), described coil (6) is encapsulated in integral molded plastic material (10) completely, and described integral molded plastic material (10) forms the insulating material between coil component (5) and iron core (3).
2. solenoid valve as claimed in claim 1 (1), is characterized in that: described sheath (4) is fixed on the outer surface of iron core (3) and coil component (5) with the Placement of screw thread or welding.
3. the manufacture method of solenoid valve (1), is characterized in that: comprise the steps:
(a), on die main body (12) outer surface of winding mould (11), dielectric film is set;
(b), at die main body (12) foreign volume around wire, form coil (6), then on coil (6), lay insulating material, through dipping lacquer, drying and processing, form coil component (5);
(c), the active block stop (13) of winding mould (11) one end is pushed aside to the axial direction of winding mould (11), take off coil component (5) and be installed on the outer circumferential face of iron core (3), lead-in wire leadout hole (14) by the lighting outlet (2) on coil component (5) from iron core (3) passes and causes solenoid valve (1) outside, then by sheath (4) by screw thread or be welded to connect on the outer surface that is fixed on iron core (3) and coil component (5);
(d), by the lead-in wire leadout hole (14) on iron core (3), to solenoid valve (1) inside, pour into integral molded plastic material (10), make the sizing of coil component (5) position, described integral molded plastic material (10) has formed the insulating material between coil component (5) and iron core (3) simultaneously.
4. the manufacture method of solenoid valve as claimed in claim 3 (1), it is characterized in that: described winding mould (11) comprises die main body (12), in die main body (12) one end, be provided with some active block stops (13), every active block stop (13) and die main body (12) adopt hinge mode to be connected, and active block stop (13) can be in both direction rotation location axially and radially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210513299.1A CN102979943B (en) | 2012-12-04 | 2012-12-04 | Electromagnetic valve and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210513299.1A CN102979943B (en) | 2012-12-04 | 2012-12-04 | Electromagnetic valve and manufacturing method thereof |
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| CN102979943A CN102979943A (en) | 2013-03-20 |
| CN102979943B true CN102979943B (en) | 2014-03-26 |
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| CN103174551A (en) * | 2013-03-28 | 2013-06-26 | 无锡隆盛科技股份有限公司 | Built-in coil structure of motor-driven exhaust gas recirculation (EGR) valve of gasoline engine |
| WO2020067556A1 (en) * | 2018-09-28 | 2020-04-02 | 三菱電機株式会社 | Winding method, winding machine, insulator, and rotary electric machine |
| CN110349742B (en) * | 2019-07-12 | 2021-04-09 | 兰州科近泰基新技术有限责任公司 | Method for manufacturing multi-seal-head slender high-frequency water jacket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2164538B1 (en) * | 1999-07-02 | 2003-05-16 | Bitron Ind Espana Sa | PERFECTION OF ELECTROMAGNETIC VALVES FOR THE CONTROL OF FLUID CIRCUITS. |
| DE10065016A1 (en) * | 2000-12-23 | 2002-07-04 | Bosch Gmbh Robert | Electromagnet with magnetic armature |
| US7246632B2 (en) * | 2004-03-30 | 2007-07-24 | Nissin Kogyo Co., Ltd. | Normally-closed electromagnetic valve and manufacturing method for the same |
| CN200949680Y (en) * | 2006-09-15 | 2007-09-19 | 陆宝宏 | Pulse electromagnetic valve |
| US20100019186A1 (en) * | 2008-07-25 | 2010-01-28 | Eaton Corporation | Engine valve assembly with valve can mountable to an engine cover |
| CN201412529Y (en) * | 2009-05-18 | 2010-02-24 | 蒋洪雷 | Throttle-type electromagnetic valve |
| CN101949461B (en) * | 2009-07-10 | 2013-04-17 | 浙江三花制冷集团有限公司 | Electromagnetic valve capable of being closed during energization and manufacturing method thereof |
| CN202142367U (en) * | 2011-04-20 | 2012-02-08 | 杭州神林电子有限公司 | Magnet coil of magnetic valve for household appliances |
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Effective date of registration: 20170718 Address after: 214063 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee after: China FAW Group Corporation Address before: 214063 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee before: Wuxi Oil Pump Nozzle Institute of First Automobile Works |
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